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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> |
1da177e4 | 31 | |
1da177e4 | 32 | char e1000_driver_name[] = "e1000"; |
3ad2cc67 | 33 | static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver"; |
c3570acb | 34 | #define DRV_VERSION "7.3.20-k3-NAPI" |
abec42a4 SH |
35 | const char e1000_driver_version[] = DRV_VERSION; |
36 | static const char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation."; | |
1da177e4 LT |
37 | |
38 | /* e1000_pci_tbl - PCI Device ID Table | |
39 | * | |
40 | * Last entry must be all 0s | |
41 | * | |
42 | * Macro expands to... | |
43 | * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)} | |
44 | */ | |
45 | static struct pci_device_id e1000_pci_tbl[] = { | |
46 | INTEL_E1000_ETHERNET_DEVICE(0x1000), | |
47 | INTEL_E1000_ETHERNET_DEVICE(0x1001), | |
48 | INTEL_E1000_ETHERNET_DEVICE(0x1004), | |
49 | INTEL_E1000_ETHERNET_DEVICE(0x1008), | |
50 | INTEL_E1000_ETHERNET_DEVICE(0x1009), | |
51 | INTEL_E1000_ETHERNET_DEVICE(0x100C), | |
52 | INTEL_E1000_ETHERNET_DEVICE(0x100D), | |
53 | INTEL_E1000_ETHERNET_DEVICE(0x100E), | |
54 | INTEL_E1000_ETHERNET_DEVICE(0x100F), | |
55 | INTEL_E1000_ETHERNET_DEVICE(0x1010), | |
56 | INTEL_E1000_ETHERNET_DEVICE(0x1011), | |
57 | INTEL_E1000_ETHERNET_DEVICE(0x1012), | |
58 | INTEL_E1000_ETHERNET_DEVICE(0x1013), | |
59 | INTEL_E1000_ETHERNET_DEVICE(0x1014), | |
60 | INTEL_E1000_ETHERNET_DEVICE(0x1015), | |
61 | INTEL_E1000_ETHERNET_DEVICE(0x1016), | |
62 | INTEL_E1000_ETHERNET_DEVICE(0x1017), | |
63 | INTEL_E1000_ETHERNET_DEVICE(0x1018), | |
64 | INTEL_E1000_ETHERNET_DEVICE(0x1019), | |
2648345f | 65 | INTEL_E1000_ETHERNET_DEVICE(0x101A), |
1da177e4 LT |
66 | INTEL_E1000_ETHERNET_DEVICE(0x101D), |
67 | INTEL_E1000_ETHERNET_DEVICE(0x101E), | |
68 | INTEL_E1000_ETHERNET_DEVICE(0x1026), | |
69 | INTEL_E1000_ETHERNET_DEVICE(0x1027), | |
70 | INTEL_E1000_ETHERNET_DEVICE(0x1028), | |
71 | INTEL_E1000_ETHERNET_DEVICE(0x1075), | |
72 | INTEL_E1000_ETHERNET_DEVICE(0x1076), | |
73 | INTEL_E1000_ETHERNET_DEVICE(0x1077), | |
74 | INTEL_E1000_ETHERNET_DEVICE(0x1078), | |
75 | INTEL_E1000_ETHERNET_DEVICE(0x1079), | |
76 | INTEL_E1000_ETHERNET_DEVICE(0x107A), | |
77 | INTEL_E1000_ETHERNET_DEVICE(0x107B), | |
78 | INTEL_E1000_ETHERNET_DEVICE(0x107C), | |
79 | INTEL_E1000_ETHERNET_DEVICE(0x108A), | |
b7ee49db | 80 | INTEL_E1000_ETHERNET_DEVICE(0x1099), |
b7ee49db | 81 | INTEL_E1000_ETHERNET_DEVICE(0x10B5), |
1da177e4 LT |
82 | /* required last entry */ |
83 | {0,} | |
84 | }; | |
85 | ||
86 | MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); | |
87 | ||
35574764 NN |
88 | int e1000_up(struct e1000_adapter *adapter); |
89 | void e1000_down(struct e1000_adapter *adapter); | |
90 | void e1000_reinit_locked(struct e1000_adapter *adapter); | |
91 | void e1000_reset(struct e1000_adapter *adapter); | |
406874a7 | 92 | int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx); |
35574764 NN |
93 | int e1000_setup_all_tx_resources(struct e1000_adapter *adapter); |
94 | int e1000_setup_all_rx_resources(struct e1000_adapter *adapter); | |
95 | void e1000_free_all_tx_resources(struct e1000_adapter *adapter); | |
96 | void e1000_free_all_rx_resources(struct e1000_adapter *adapter); | |
3ad2cc67 | 97 | static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
35574764 | 98 | struct e1000_tx_ring *txdr); |
3ad2cc67 | 99 | static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
35574764 | 100 | struct e1000_rx_ring *rxdr); |
3ad2cc67 | 101 | static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
35574764 | 102 | struct e1000_tx_ring *tx_ring); |
3ad2cc67 | 103 | static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
35574764 NN |
104 | struct e1000_rx_ring *rx_ring); |
105 | void e1000_update_stats(struct e1000_adapter *adapter); | |
1da177e4 LT |
106 | |
107 | static int e1000_init_module(void); | |
108 | static void e1000_exit_module(void); | |
109 | static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent); | |
110 | static void __devexit e1000_remove(struct pci_dev *pdev); | |
581d708e | 111 | static int e1000_alloc_queues(struct e1000_adapter *adapter); |
1da177e4 LT |
112 | static int e1000_sw_init(struct e1000_adapter *adapter); |
113 | static int e1000_open(struct net_device *netdev); | |
114 | static int e1000_close(struct net_device *netdev); | |
115 | static void e1000_configure_tx(struct e1000_adapter *adapter); | |
116 | static void e1000_configure_rx(struct e1000_adapter *adapter); | |
117 | static void e1000_setup_rctl(struct e1000_adapter *adapter); | |
581d708e MC |
118 | static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter); |
119 | static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter); | |
120 | static void e1000_clean_tx_ring(struct e1000_adapter *adapter, | |
121 | struct e1000_tx_ring *tx_ring); | |
122 | static void e1000_clean_rx_ring(struct e1000_adapter *adapter, | |
123 | struct e1000_rx_ring *rx_ring); | |
db0ce50d | 124 | static void e1000_set_rx_mode(struct net_device *netdev); |
1da177e4 LT |
125 | static void e1000_update_phy_info(unsigned long data); |
126 | static void e1000_watchdog(unsigned long data); | |
1da177e4 LT |
127 | static void e1000_82547_tx_fifo_stall(unsigned long data); |
128 | static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev); | |
129 | static struct net_device_stats * e1000_get_stats(struct net_device *netdev); | |
130 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu); | |
131 | static int e1000_set_mac(struct net_device *netdev, void *p); | |
7d12e780 | 132 | static irqreturn_t e1000_intr(int irq, void *data); |
9ac98284 | 133 | static irqreturn_t e1000_intr_msi(int irq, void *data); |
c3033b01 JP |
134 | static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
135 | struct e1000_tx_ring *tx_ring); | |
bea3348e | 136 | static int e1000_clean(struct napi_struct *napi, int budget); |
c3033b01 JP |
137 | static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
138 | struct e1000_rx_ring *rx_ring, | |
139 | int *work_done, int work_to_do); | |
581d708e | 140 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
72d64a43 JK |
141 | struct e1000_rx_ring *rx_ring, |
142 | int cleaned_count); | |
1da177e4 LT |
143 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); |
144 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
145 | int cmd); | |
1da177e4 LT |
146 | static void e1000_enter_82542_rst(struct e1000_adapter *adapter); |
147 | static void e1000_leave_82542_rst(struct e1000_adapter *adapter); | |
148 | static void e1000_tx_timeout(struct net_device *dev); | |
65f27f38 | 149 | static void e1000_reset_task(struct work_struct *work); |
1da177e4 | 150 | static void e1000_smartspeed(struct e1000_adapter *adapter); |
e619d523 AK |
151 | static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
152 | struct sk_buff *skb); | |
1da177e4 LT |
153 | |
154 | static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp); | |
406874a7 JP |
155 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid); |
156 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid); | |
1da177e4 LT |
157 | static void e1000_restore_vlan(struct e1000_adapter *adapter); |
158 | ||
977e74b5 | 159 | static int e1000_suspend(struct pci_dev *pdev, pm_message_t state); |
6fdfef16 | 160 | #ifdef CONFIG_PM |
1da177e4 LT |
161 | static int e1000_resume(struct pci_dev *pdev); |
162 | #endif | |
c653e635 | 163 | static void e1000_shutdown(struct pci_dev *pdev); |
1da177e4 LT |
164 | |
165 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
166 | /* for netdump / net console */ | |
167 | static void e1000_netpoll (struct net_device *netdev); | |
168 | #endif | |
169 | ||
1f753861 JB |
170 | #define COPYBREAK_DEFAULT 256 |
171 | static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT; | |
172 | module_param(copybreak, uint, 0644); | |
173 | MODULE_PARM_DESC(copybreak, | |
174 | "Maximum size of packet that is copied to a new buffer on receive"); | |
175 | ||
9026729b AK |
176 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
177 | pci_channel_state_t state); | |
178 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev); | |
179 | static void e1000_io_resume(struct pci_dev *pdev); | |
180 | ||
181 | static struct pci_error_handlers e1000_err_handler = { | |
182 | .error_detected = e1000_io_error_detected, | |
183 | .slot_reset = e1000_io_slot_reset, | |
184 | .resume = e1000_io_resume, | |
185 | }; | |
24025e4e | 186 | |
1da177e4 LT |
187 | static struct pci_driver e1000_driver = { |
188 | .name = e1000_driver_name, | |
189 | .id_table = e1000_pci_tbl, | |
190 | .probe = e1000_probe, | |
191 | .remove = __devexit_p(e1000_remove), | |
c4e24f01 | 192 | #ifdef CONFIG_PM |
1da177e4 | 193 | /* Power Managment Hooks */ |
1da177e4 | 194 | .suspend = e1000_suspend, |
c653e635 | 195 | .resume = e1000_resume, |
1da177e4 | 196 | #endif |
9026729b AK |
197 | .shutdown = e1000_shutdown, |
198 | .err_handler = &e1000_err_handler | |
1da177e4 LT |
199 | }; |
200 | ||
201 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
202 | MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); | |
203 | MODULE_LICENSE("GPL"); | |
204 | MODULE_VERSION(DRV_VERSION); | |
205 | ||
206 | static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; | |
207 | module_param(debug, int, 0); | |
208 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
209 | ||
210 | /** | |
211 | * e1000_init_module - Driver Registration Routine | |
212 | * | |
213 | * e1000_init_module is the first routine called when the driver is | |
214 | * loaded. All it does is register with the PCI subsystem. | |
215 | **/ | |
216 | ||
64798845 | 217 | static int __init e1000_init_module(void) |
1da177e4 LT |
218 | { |
219 | int ret; | |
220 | printk(KERN_INFO "%s - version %s\n", | |
221 | e1000_driver_string, e1000_driver_version); | |
222 | ||
223 | printk(KERN_INFO "%s\n", e1000_copyright); | |
224 | ||
29917620 | 225 | ret = pci_register_driver(&e1000_driver); |
1f753861 JB |
226 | if (copybreak != COPYBREAK_DEFAULT) { |
227 | if (copybreak == 0) | |
228 | printk(KERN_INFO "e1000: copybreak disabled\n"); | |
229 | else | |
230 | printk(KERN_INFO "e1000: copybreak enabled for " | |
231 | "packets <= %u bytes\n", copybreak); | |
232 | } | |
1da177e4 LT |
233 | return ret; |
234 | } | |
235 | ||
236 | module_init(e1000_init_module); | |
237 | ||
238 | /** | |
239 | * e1000_exit_module - Driver Exit Cleanup Routine | |
240 | * | |
241 | * e1000_exit_module is called just before the driver is removed | |
242 | * from memory. | |
243 | **/ | |
244 | ||
64798845 | 245 | static void __exit e1000_exit_module(void) |
1da177e4 | 246 | { |
1da177e4 LT |
247 | pci_unregister_driver(&e1000_driver); |
248 | } | |
249 | ||
250 | module_exit(e1000_exit_module); | |
251 | ||
2db10a08 AK |
252 | static int e1000_request_irq(struct e1000_adapter *adapter) |
253 | { | |
1dc32918 | 254 | struct e1000_hw *hw = &adapter->hw; |
2db10a08 | 255 | struct net_device *netdev = adapter->netdev; |
3e18826c | 256 | irq_handler_t handler = e1000_intr; |
e94bd23f AK |
257 | int irq_flags = IRQF_SHARED; |
258 | int err; | |
2db10a08 | 259 | |
1dc32918 | 260 | if (hw->mac_type >= e1000_82571) { |
e94bd23f AK |
261 | adapter->have_msi = !pci_enable_msi(adapter->pdev); |
262 | if (adapter->have_msi) { | |
3e18826c | 263 | handler = e1000_intr_msi; |
e94bd23f | 264 | irq_flags = 0; |
2db10a08 AK |
265 | } |
266 | } | |
e94bd23f AK |
267 | |
268 | err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name, | |
269 | netdev); | |
270 | if (err) { | |
271 | if (adapter->have_msi) | |
272 | pci_disable_msi(adapter->pdev); | |
2db10a08 AK |
273 | DPRINTK(PROBE, ERR, |
274 | "Unable to allocate interrupt Error: %d\n", err); | |
e94bd23f | 275 | } |
2db10a08 AK |
276 | |
277 | return err; | |
278 | } | |
279 | ||
280 | static void e1000_free_irq(struct e1000_adapter *adapter) | |
281 | { | |
282 | struct net_device *netdev = adapter->netdev; | |
283 | ||
284 | free_irq(adapter->pdev->irq, netdev); | |
285 | ||
2db10a08 AK |
286 | if (adapter->have_msi) |
287 | pci_disable_msi(adapter->pdev); | |
2db10a08 AK |
288 | } |
289 | ||
1da177e4 LT |
290 | /** |
291 | * e1000_irq_disable - Mask off interrupt generation on the NIC | |
292 | * @adapter: board private structure | |
293 | **/ | |
294 | ||
64798845 | 295 | static void e1000_irq_disable(struct e1000_adapter *adapter) |
1da177e4 | 296 | { |
1dc32918 JP |
297 | struct e1000_hw *hw = &adapter->hw; |
298 | ||
299 | ew32(IMC, ~0); | |
300 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
301 | synchronize_irq(adapter->pdev->irq); |
302 | } | |
303 | ||
304 | /** | |
305 | * e1000_irq_enable - Enable default interrupt generation settings | |
306 | * @adapter: board private structure | |
307 | **/ | |
308 | ||
64798845 | 309 | static void e1000_irq_enable(struct e1000_adapter *adapter) |
1da177e4 | 310 | { |
1dc32918 JP |
311 | struct e1000_hw *hw = &adapter->hw; |
312 | ||
313 | ew32(IMS, IMS_ENABLE_MASK); | |
314 | E1000_WRITE_FLUSH(); | |
1da177e4 | 315 | } |
3ad2cc67 | 316 | |
64798845 | 317 | static void e1000_update_mng_vlan(struct e1000_adapter *adapter) |
2d7edb92 | 318 | { |
1dc32918 | 319 | struct e1000_hw *hw = &adapter->hw; |
2d7edb92 | 320 | struct net_device *netdev = adapter->netdev; |
1dc32918 | 321 | u16 vid = hw->mng_cookie.vlan_id; |
406874a7 | 322 | u16 old_vid = adapter->mng_vlan_id; |
96838a40 | 323 | if (adapter->vlgrp) { |
5c15bdec | 324 | if (!vlan_group_get_device(adapter->vlgrp, vid)) { |
1dc32918 | 325 | if (hw->mng_cookie.status & |
2d7edb92 MC |
326 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) { |
327 | e1000_vlan_rx_add_vid(netdev, vid); | |
328 | adapter->mng_vlan_id = vid; | |
329 | } else | |
330 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
96838a40 | 331 | |
406874a7 | 332 | if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && |
96838a40 | 333 | (vid != old_vid) && |
5c15bdec | 334 | !vlan_group_get_device(adapter->vlgrp, old_vid)) |
2d7edb92 | 335 | e1000_vlan_rx_kill_vid(netdev, old_vid); |
c5f226fe JK |
336 | } else |
337 | adapter->mng_vlan_id = vid; | |
2d7edb92 MC |
338 | } |
339 | } | |
b55ccb35 JK |
340 | |
341 | /** | |
342 | * e1000_release_hw_control - release control of the h/w to f/w | |
343 | * @adapter: address of board private structure | |
344 | * | |
345 | * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit. | |
346 | * For ASF and Pass Through versions of f/w this means that the | |
347 | * driver is no longer loaded. For AMT version (only with 82573) i | |
90fb5135 | 348 | * of the f/w this means that the network i/f is closed. |
76c224bc | 349 | * |
b55ccb35 JK |
350 | **/ |
351 | ||
64798845 | 352 | static void e1000_release_hw_control(struct e1000_adapter *adapter) |
b55ccb35 | 353 | { |
406874a7 JP |
354 | u32 ctrl_ext; |
355 | u32 swsm; | |
1dc32918 | 356 | struct e1000_hw *hw = &adapter->hw; |
b55ccb35 JK |
357 | |
358 | /* Let firmware taken over control of h/w */ | |
1dc32918 | 359 | switch (hw->mac_type) { |
b55ccb35 | 360 | case e1000_82573: |
1dc32918 JP |
361 | swsm = er32(SWSM); |
362 | ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD); | |
31d76442 BA |
363 | break; |
364 | case e1000_82571: | |
365 | case e1000_82572: | |
366 | case e1000_80003es2lan: | |
cd94dd0b | 367 | case e1000_ich8lan: |
1dc32918 JP |
368 | ctrl_ext = er32(CTRL_EXT); |
369 | ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); | |
cd94dd0b | 370 | break; |
b55ccb35 JK |
371 | default: |
372 | break; | |
373 | } | |
374 | } | |
375 | ||
376 | /** | |
377 | * e1000_get_hw_control - get control of the h/w from f/w | |
378 | * @adapter: address of board private structure | |
379 | * | |
380 | * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit. | |
76c224bc AK |
381 | * For ASF and Pass Through versions of f/w this means that |
382 | * the driver is loaded. For AMT version (only with 82573) | |
90fb5135 | 383 | * of the f/w this means that the network i/f is open. |
76c224bc | 384 | * |
b55ccb35 JK |
385 | **/ |
386 | ||
64798845 | 387 | static void e1000_get_hw_control(struct e1000_adapter *adapter) |
b55ccb35 | 388 | { |
406874a7 JP |
389 | u32 ctrl_ext; |
390 | u32 swsm; | |
1dc32918 | 391 | struct e1000_hw *hw = &adapter->hw; |
90fb5135 | 392 | |
b55ccb35 | 393 | /* Let firmware know the driver has taken over */ |
1dc32918 | 394 | switch (hw->mac_type) { |
b55ccb35 | 395 | case e1000_82573: |
1dc32918 JP |
396 | swsm = er32(SWSM); |
397 | ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD); | |
b55ccb35 | 398 | break; |
31d76442 BA |
399 | case e1000_82571: |
400 | case e1000_82572: | |
401 | case e1000_80003es2lan: | |
cd94dd0b | 402 | case e1000_ich8lan: |
1dc32918 JP |
403 | ctrl_ext = er32(CTRL_EXT); |
404 | ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); | |
cd94dd0b | 405 | break; |
b55ccb35 JK |
406 | default: |
407 | break; | |
408 | } | |
409 | } | |
410 | ||
64798845 | 411 | static void e1000_init_manageability(struct e1000_adapter *adapter) |
0fccd0e9 | 412 | { |
1dc32918 JP |
413 | struct e1000_hw *hw = &adapter->hw; |
414 | ||
0fccd0e9 | 415 | if (adapter->en_mng_pt) { |
1dc32918 | 416 | u32 manc = er32(MANC); |
0fccd0e9 JG |
417 | |
418 | /* disable hardware interception of ARP */ | |
419 | manc &= ~(E1000_MANC_ARP_EN); | |
420 | ||
421 | /* enable receiving management packets to the host */ | |
422 | /* this will probably generate destination unreachable messages | |
423 | * from the host OS, but the packets will be handled on SMBUS */ | |
1dc32918 JP |
424 | if (hw->has_manc2h) { |
425 | u32 manc2h = er32(MANC2H); | |
0fccd0e9 JG |
426 | |
427 | manc |= E1000_MANC_EN_MNG2HOST; | |
428 | #define E1000_MNG2HOST_PORT_623 (1 << 5) | |
429 | #define E1000_MNG2HOST_PORT_664 (1 << 6) | |
430 | manc2h |= E1000_MNG2HOST_PORT_623; | |
431 | manc2h |= E1000_MNG2HOST_PORT_664; | |
1dc32918 | 432 | ew32(MANC2H, manc2h); |
0fccd0e9 JG |
433 | } |
434 | ||
1dc32918 | 435 | ew32(MANC, manc); |
0fccd0e9 JG |
436 | } |
437 | } | |
438 | ||
64798845 | 439 | static void e1000_release_manageability(struct e1000_adapter *adapter) |
0fccd0e9 | 440 | { |
1dc32918 JP |
441 | struct e1000_hw *hw = &adapter->hw; |
442 | ||
0fccd0e9 | 443 | if (adapter->en_mng_pt) { |
1dc32918 | 444 | u32 manc = er32(MANC); |
0fccd0e9 JG |
445 | |
446 | /* re-enable hardware interception of ARP */ | |
447 | manc |= E1000_MANC_ARP_EN; | |
448 | ||
1dc32918 | 449 | if (hw->has_manc2h) |
0fccd0e9 JG |
450 | manc &= ~E1000_MANC_EN_MNG2HOST; |
451 | ||
452 | /* don't explicitly have to mess with MANC2H since | |
453 | * MANC has an enable disable that gates MANC2H */ | |
454 | ||
1dc32918 | 455 | ew32(MANC, manc); |
0fccd0e9 JG |
456 | } |
457 | } | |
458 | ||
e0aac5a2 AK |
459 | /** |
460 | * e1000_configure - configure the hardware for RX and TX | |
461 | * @adapter = private board structure | |
462 | **/ | |
463 | static void e1000_configure(struct e1000_adapter *adapter) | |
1da177e4 LT |
464 | { |
465 | struct net_device *netdev = adapter->netdev; | |
2db10a08 | 466 | int i; |
1da177e4 | 467 | |
db0ce50d | 468 | e1000_set_rx_mode(netdev); |
1da177e4 LT |
469 | |
470 | e1000_restore_vlan(adapter); | |
0fccd0e9 | 471 | e1000_init_manageability(adapter); |
1da177e4 LT |
472 | |
473 | e1000_configure_tx(adapter); | |
474 | e1000_setup_rctl(adapter); | |
475 | e1000_configure_rx(adapter); | |
72d64a43 JK |
476 | /* call E1000_DESC_UNUSED which always leaves |
477 | * at least 1 descriptor unused to make sure | |
478 | * next_to_use != next_to_clean */ | |
f56799ea | 479 | for (i = 0; i < adapter->num_rx_queues; i++) { |
72d64a43 | 480 | struct e1000_rx_ring *ring = &adapter->rx_ring[i]; |
a292ca6e JK |
481 | adapter->alloc_rx_buf(adapter, ring, |
482 | E1000_DESC_UNUSED(ring)); | |
f56799ea | 483 | } |
1da177e4 | 484 | |
7bfa4816 | 485 | adapter->tx_queue_len = netdev->tx_queue_len; |
e0aac5a2 AK |
486 | } |
487 | ||
488 | int e1000_up(struct e1000_adapter *adapter) | |
489 | { | |
1dc32918 JP |
490 | struct e1000_hw *hw = &adapter->hw; |
491 | ||
e0aac5a2 AK |
492 | /* hardware has been reset, we need to reload some things */ |
493 | e1000_configure(adapter); | |
494 | ||
495 | clear_bit(__E1000_DOWN, &adapter->flags); | |
7bfa4816 | 496 | |
bea3348e | 497 | napi_enable(&adapter->napi); |
c3570acb | 498 | |
5de55624 MC |
499 | e1000_irq_enable(adapter); |
500 | ||
79f3d399 | 501 | /* fire a link change interrupt to start the watchdog */ |
1dc32918 | 502 | ew32(ICS, E1000_ICS_LSC); |
1da177e4 LT |
503 | return 0; |
504 | } | |
505 | ||
79f05bf0 AK |
506 | /** |
507 | * e1000_power_up_phy - restore link in case the phy was powered down | |
508 | * @adapter: address of board private structure | |
509 | * | |
510 | * The phy may be powered down to save power and turn off link when the | |
511 | * driver is unloaded and wake on lan is not enabled (among others) | |
512 | * *** this routine MUST be followed by a call to e1000_reset *** | |
513 | * | |
514 | **/ | |
515 | ||
d658266e | 516 | void e1000_power_up_phy(struct e1000_adapter *adapter) |
79f05bf0 | 517 | { |
1dc32918 | 518 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 519 | u16 mii_reg = 0; |
79f05bf0 AK |
520 | |
521 | /* Just clear the power down bit to wake the phy back up */ | |
1dc32918 | 522 | if (hw->media_type == e1000_media_type_copper) { |
79f05bf0 AK |
523 | /* according to the manual, the phy will retain its |
524 | * settings across a power-down/up cycle */ | |
1dc32918 | 525 | e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); |
79f05bf0 | 526 | mii_reg &= ~MII_CR_POWER_DOWN; |
1dc32918 | 527 | e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); |
79f05bf0 AK |
528 | } |
529 | } | |
530 | ||
531 | static void e1000_power_down_phy(struct e1000_adapter *adapter) | |
532 | { | |
1dc32918 JP |
533 | struct e1000_hw *hw = &adapter->hw; |
534 | ||
61c2505f | 535 | /* Power down the PHY so no link is implied when interface is down * |
c3033b01 | 536 | * The PHY cannot be powered down if any of the following is true * |
79f05bf0 AK |
537 | * (a) WoL is enabled |
538 | * (b) AMT is active | |
539 | * (c) SoL/IDER session is active */ | |
1dc32918 JP |
540 | if (!adapter->wol && hw->mac_type >= e1000_82540 && |
541 | hw->media_type == e1000_media_type_copper) { | |
406874a7 | 542 | u16 mii_reg = 0; |
61c2505f | 543 | |
1dc32918 | 544 | switch (hw->mac_type) { |
61c2505f BA |
545 | case e1000_82540: |
546 | case e1000_82545: | |
547 | case e1000_82545_rev_3: | |
548 | case e1000_82546: | |
549 | case e1000_82546_rev_3: | |
550 | case e1000_82541: | |
551 | case e1000_82541_rev_2: | |
552 | case e1000_82547: | |
553 | case e1000_82547_rev_2: | |
1dc32918 | 554 | if (er32(MANC) & E1000_MANC_SMBUS_EN) |
61c2505f BA |
555 | goto out; |
556 | break; | |
557 | case e1000_82571: | |
558 | case e1000_82572: | |
559 | case e1000_82573: | |
560 | case e1000_80003es2lan: | |
561 | case e1000_ich8lan: | |
1dc32918 JP |
562 | if (e1000_check_mng_mode(hw) || |
563 | e1000_check_phy_reset_block(hw)) | |
61c2505f BA |
564 | goto out; |
565 | break; | |
566 | default: | |
567 | goto out; | |
568 | } | |
1dc32918 | 569 | e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); |
79f05bf0 | 570 | mii_reg |= MII_CR_POWER_DOWN; |
1dc32918 | 571 | e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); |
79f05bf0 AK |
572 | mdelay(1); |
573 | } | |
61c2505f BA |
574 | out: |
575 | return; | |
79f05bf0 AK |
576 | } |
577 | ||
64798845 | 578 | void e1000_down(struct e1000_adapter *adapter) |
1da177e4 LT |
579 | { |
580 | struct net_device *netdev = adapter->netdev; | |
581 | ||
1314bbf3 AK |
582 | /* signal that we're down so the interrupt handler does not |
583 | * reschedule our watchdog timer */ | |
584 | set_bit(__E1000_DOWN, &adapter->flags); | |
585 | ||
bea3348e | 586 | napi_disable(&adapter->napi); |
c3570acb | 587 | |
1da177e4 | 588 | e1000_irq_disable(adapter); |
c1605eb3 | 589 | |
1da177e4 LT |
590 | del_timer_sync(&adapter->tx_fifo_stall_timer); |
591 | del_timer_sync(&adapter->watchdog_timer); | |
592 | del_timer_sync(&adapter->phy_info_timer); | |
593 | ||
7bfa4816 | 594 | netdev->tx_queue_len = adapter->tx_queue_len; |
1da177e4 LT |
595 | adapter->link_speed = 0; |
596 | adapter->link_duplex = 0; | |
597 | netif_carrier_off(netdev); | |
598 | netif_stop_queue(netdev); | |
599 | ||
600 | e1000_reset(adapter); | |
581d708e MC |
601 | e1000_clean_all_tx_rings(adapter); |
602 | e1000_clean_all_rx_rings(adapter); | |
1da177e4 | 603 | } |
1da177e4 | 604 | |
64798845 | 605 | void e1000_reinit_locked(struct e1000_adapter *adapter) |
2db10a08 AK |
606 | { |
607 | WARN_ON(in_interrupt()); | |
608 | while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) | |
609 | msleep(1); | |
610 | e1000_down(adapter); | |
611 | e1000_up(adapter); | |
612 | clear_bit(__E1000_RESETTING, &adapter->flags); | |
1da177e4 LT |
613 | } |
614 | ||
64798845 | 615 | void e1000_reset(struct e1000_adapter *adapter) |
1da177e4 | 616 | { |
1dc32918 | 617 | struct e1000_hw *hw = &adapter->hw; |
406874a7 JP |
618 | u32 pba = 0, tx_space, min_tx_space, min_rx_space; |
619 | u16 fc_high_water_mark = E1000_FC_HIGH_DIFF; | |
c3033b01 | 620 | bool legacy_pba_adjust = false; |
1da177e4 LT |
621 | |
622 | /* Repartition Pba for greater than 9k mtu | |
623 | * To take effect CTRL.RST is required. | |
624 | */ | |
625 | ||
1dc32918 | 626 | switch (hw->mac_type) { |
018ea44e BA |
627 | case e1000_82542_rev2_0: |
628 | case e1000_82542_rev2_1: | |
629 | case e1000_82543: | |
630 | case e1000_82544: | |
631 | case e1000_82540: | |
632 | case e1000_82541: | |
633 | case e1000_82541_rev_2: | |
c3033b01 | 634 | legacy_pba_adjust = true; |
018ea44e BA |
635 | pba = E1000_PBA_48K; |
636 | break; | |
637 | case e1000_82545: | |
638 | case e1000_82545_rev_3: | |
639 | case e1000_82546: | |
640 | case e1000_82546_rev_3: | |
641 | pba = E1000_PBA_48K; | |
642 | break; | |
2d7edb92 | 643 | case e1000_82547: |
0e6ef3e0 | 644 | case e1000_82547_rev_2: |
c3033b01 | 645 | legacy_pba_adjust = true; |
2d7edb92 MC |
646 | pba = E1000_PBA_30K; |
647 | break; | |
868d5309 MC |
648 | case e1000_82571: |
649 | case e1000_82572: | |
6418ecc6 | 650 | case e1000_80003es2lan: |
868d5309 MC |
651 | pba = E1000_PBA_38K; |
652 | break; | |
2d7edb92 | 653 | case e1000_82573: |
018ea44e | 654 | pba = E1000_PBA_20K; |
2d7edb92 | 655 | break; |
cd94dd0b AK |
656 | case e1000_ich8lan: |
657 | pba = E1000_PBA_8K; | |
018ea44e BA |
658 | case e1000_undefined: |
659 | case e1000_num_macs: | |
2d7edb92 MC |
660 | break; |
661 | } | |
662 | ||
c3033b01 | 663 | if (legacy_pba_adjust) { |
018ea44e BA |
664 | if (adapter->netdev->mtu > E1000_RXBUFFER_8192) |
665 | pba -= 8; /* allocate more FIFO for Tx */ | |
2d7edb92 | 666 | |
1dc32918 | 667 | if (hw->mac_type == e1000_82547) { |
018ea44e BA |
668 | adapter->tx_fifo_head = 0; |
669 | adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; | |
670 | adapter->tx_fifo_size = | |
671 | (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; | |
672 | atomic_set(&adapter->tx_fifo_stall, 0); | |
673 | } | |
1dc32918 | 674 | } else if (hw->max_frame_size > MAXIMUM_ETHERNET_FRAME_SIZE) { |
018ea44e | 675 | /* adjust PBA for jumbo frames */ |
1dc32918 | 676 | ew32(PBA, pba); |
018ea44e BA |
677 | |
678 | /* To maintain wire speed transmits, the Tx FIFO should be | |
679 | * large enough to accomodate two full transmit packets, | |
680 | * rounded up to the next 1KB and expressed in KB. Likewise, | |
681 | * the Rx FIFO should be large enough to accomodate at least | |
682 | * one full receive packet and is similarly rounded up and | |
683 | * expressed in KB. */ | |
1dc32918 | 684 | pba = er32(PBA); |
018ea44e BA |
685 | /* upper 16 bits has Tx packet buffer allocation size in KB */ |
686 | tx_space = pba >> 16; | |
687 | /* lower 16 bits has Rx packet buffer allocation size in KB */ | |
688 | pba &= 0xffff; | |
689 | /* don't include ethernet FCS because hardware appends/strips */ | |
690 | min_rx_space = adapter->netdev->mtu + ENET_HEADER_SIZE + | |
691 | VLAN_TAG_SIZE; | |
692 | min_tx_space = min_rx_space; | |
693 | min_tx_space *= 2; | |
9099cfb9 | 694 | min_tx_space = ALIGN(min_tx_space, 1024); |
018ea44e | 695 | min_tx_space >>= 10; |
9099cfb9 | 696 | min_rx_space = ALIGN(min_rx_space, 1024); |
018ea44e BA |
697 | min_rx_space >>= 10; |
698 | ||
699 | /* If current Tx allocation is less than the min Tx FIFO size, | |
700 | * and the min Tx FIFO size is less than the current Rx FIFO | |
701 | * allocation, take space away from current Rx allocation */ | |
702 | if (tx_space < min_tx_space && | |
703 | ((min_tx_space - tx_space) < pba)) { | |
704 | pba = pba - (min_tx_space - tx_space); | |
705 | ||
706 | /* PCI/PCIx hardware has PBA alignment constraints */ | |
1dc32918 | 707 | switch (hw->mac_type) { |
018ea44e BA |
708 | case e1000_82545 ... e1000_82546_rev_3: |
709 | pba &= ~(E1000_PBA_8K - 1); | |
710 | break; | |
711 | default: | |
712 | break; | |
713 | } | |
714 | ||
715 | /* if short on rx space, rx wins and must trump tx | |
716 | * adjustment or use Early Receive if available */ | |
717 | if (pba < min_rx_space) { | |
1dc32918 | 718 | switch (hw->mac_type) { |
018ea44e BA |
719 | case e1000_82573: |
720 | /* ERT enabled in e1000_configure_rx */ | |
721 | break; | |
722 | default: | |
723 | pba = min_rx_space; | |
724 | break; | |
725 | } | |
726 | } | |
727 | } | |
1da177e4 | 728 | } |
2d7edb92 | 729 | |
1dc32918 | 730 | ew32(PBA, pba); |
1da177e4 LT |
731 | |
732 | /* flow control settings */ | |
f11b7f85 JK |
733 | /* Set the FC high water mark to 90% of the FIFO size. |
734 | * Required to clear last 3 LSB */ | |
735 | fc_high_water_mark = ((pba * 9216)/10) & 0xFFF8; | |
cd94dd0b AK |
736 | /* We can't use 90% on small FIFOs because the remainder |
737 | * would be less than 1 full frame. In this case, we size | |
738 | * it to allow at least a full frame above the high water | |
739 | * mark. */ | |
740 | if (pba < E1000_PBA_16K) | |
741 | fc_high_water_mark = (pba * 1024) - 1600; | |
f11b7f85 | 742 | |
1dc32918 JP |
743 | hw->fc_high_water = fc_high_water_mark; |
744 | hw->fc_low_water = fc_high_water_mark - 8; | |
745 | if (hw->mac_type == e1000_80003es2lan) | |
746 | hw->fc_pause_time = 0xFFFF; | |
87041639 | 747 | else |
1dc32918 JP |
748 | hw->fc_pause_time = E1000_FC_PAUSE_TIME; |
749 | hw->fc_send_xon = 1; | |
750 | hw->fc = hw->original_fc; | |
1da177e4 | 751 | |
2d7edb92 | 752 | /* Allow time for pending master requests to run */ |
1dc32918 JP |
753 | e1000_reset_hw(hw); |
754 | if (hw->mac_type >= e1000_82544) | |
755 | ew32(WUC, 0); | |
09ae3e88 | 756 | |
1dc32918 | 757 | if (e1000_init_hw(hw)) |
1da177e4 | 758 | DPRINTK(PROBE, ERR, "Hardware Error\n"); |
2d7edb92 | 759 | e1000_update_mng_vlan(adapter); |
3d5460a0 JB |
760 | |
761 | /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */ | |
1dc32918 JP |
762 | if (hw->mac_type >= e1000_82544 && |
763 | hw->mac_type <= e1000_82547_rev_2 && | |
764 | hw->autoneg == 1 && | |
765 | hw->autoneg_advertised == ADVERTISE_1000_FULL) { | |
766 | u32 ctrl = er32(CTRL); | |
3d5460a0 JB |
767 | /* clear phy power management bit if we are in gig only mode, |
768 | * which if enabled will attempt negotiation to 100Mb, which | |
769 | * can cause a loss of link at power off or driver unload */ | |
770 | ctrl &= ~E1000_CTRL_SWDPIN3; | |
1dc32918 | 771 | ew32(CTRL, ctrl); |
3d5460a0 JB |
772 | } |
773 | ||
1da177e4 | 774 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
1dc32918 | 775 | ew32(VET, ETHERNET_IEEE_VLAN_TYPE); |
1da177e4 | 776 | |
1dc32918 JP |
777 | e1000_reset_adaptive(hw); |
778 | e1000_phy_get_info(hw, &adapter->phy_info); | |
9a53a202 AK |
779 | |
780 | if (!adapter->smart_power_down && | |
1dc32918 JP |
781 | (hw->mac_type == e1000_82571 || |
782 | hw->mac_type == e1000_82572)) { | |
406874a7 | 783 | u16 phy_data = 0; |
9a53a202 AK |
784 | /* speed up time to link by disabling smart power down, ignore |
785 | * the return value of this function because there is nothing | |
786 | * different we would do if it failed */ | |
1dc32918 | 787 | e1000_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, |
9a53a202 AK |
788 | &phy_data); |
789 | phy_data &= ~IGP02E1000_PM_SPD; | |
1dc32918 | 790 | e1000_write_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, |
9a53a202 AK |
791 | phy_data); |
792 | } | |
793 | ||
0fccd0e9 | 794 | e1000_release_manageability(adapter); |
1da177e4 LT |
795 | } |
796 | ||
67b3c27c AK |
797 | /** |
798 | * Dump the eeprom for users having checksum issues | |
799 | **/ | |
b4ea895d | 800 | static void e1000_dump_eeprom(struct e1000_adapter *adapter) |
67b3c27c AK |
801 | { |
802 | struct net_device *netdev = adapter->netdev; | |
803 | struct ethtool_eeprom eeprom; | |
804 | const struct ethtool_ops *ops = netdev->ethtool_ops; | |
805 | u8 *data; | |
806 | int i; | |
807 | u16 csum_old, csum_new = 0; | |
808 | ||
809 | eeprom.len = ops->get_eeprom_len(netdev); | |
810 | eeprom.offset = 0; | |
811 | ||
812 | data = kmalloc(eeprom.len, GFP_KERNEL); | |
813 | if (!data) { | |
814 | printk(KERN_ERR "Unable to allocate memory to dump EEPROM" | |
815 | " data\n"); | |
816 | return; | |
817 | } | |
818 | ||
819 | ops->get_eeprom(netdev, &eeprom, data); | |
820 | ||
821 | csum_old = (data[EEPROM_CHECKSUM_REG * 2]) + | |
822 | (data[EEPROM_CHECKSUM_REG * 2 + 1] << 8); | |
823 | for (i = 0; i < EEPROM_CHECKSUM_REG * 2; i += 2) | |
824 | csum_new += data[i] + (data[i + 1] << 8); | |
825 | csum_new = EEPROM_SUM - csum_new; | |
826 | ||
827 | printk(KERN_ERR "/*********************/\n"); | |
828 | printk(KERN_ERR "Current EEPROM Checksum : 0x%04x\n", csum_old); | |
829 | printk(KERN_ERR "Calculated : 0x%04x\n", csum_new); | |
830 | ||
831 | printk(KERN_ERR "Offset Values\n"); | |
832 | printk(KERN_ERR "======== ======\n"); | |
833 | print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, data, 128, 0); | |
834 | ||
835 | printk(KERN_ERR "Include this output when contacting your support " | |
836 | "provider.\n"); | |
837 | printk(KERN_ERR "This is not a software error! Something bad " | |
838 | "happened to your hardware or\n"); | |
839 | printk(KERN_ERR "EEPROM image. Ignoring this " | |
840 | "problem could result in further problems,\n"); | |
841 | printk(KERN_ERR "possibly loss of data, corruption or system hangs!\n"); | |
842 | printk(KERN_ERR "The MAC Address will be reset to 00:00:00:00:00:00, " | |
843 | "which is invalid\n"); | |
844 | printk(KERN_ERR "and requires you to set the proper MAC " | |
845 | "address manually before continuing\n"); | |
846 | printk(KERN_ERR "to enable this network device.\n"); | |
847 | printk(KERN_ERR "Please inspect the EEPROM dump and report the issue " | |
848 | "to your hardware vendor\n"); | |
63cd31f6 | 849 | printk(KERN_ERR "or Intel Customer Support.\n"); |
67b3c27c AK |
850 | printk(KERN_ERR "/*********************/\n"); |
851 | ||
852 | kfree(data); | |
853 | } | |
854 | ||
81250297 TI |
855 | /** |
856 | * e1000_is_need_ioport - determine if an adapter needs ioport resources or not | |
857 | * @pdev: PCI device information struct | |
858 | * | |
859 | * Return true if an adapter needs ioport resources | |
860 | **/ | |
861 | static int e1000_is_need_ioport(struct pci_dev *pdev) | |
862 | { | |
863 | switch (pdev->device) { | |
864 | case E1000_DEV_ID_82540EM: | |
865 | case E1000_DEV_ID_82540EM_LOM: | |
866 | case E1000_DEV_ID_82540EP: | |
867 | case E1000_DEV_ID_82540EP_LOM: | |
868 | case E1000_DEV_ID_82540EP_LP: | |
869 | case E1000_DEV_ID_82541EI: | |
870 | case E1000_DEV_ID_82541EI_MOBILE: | |
871 | case E1000_DEV_ID_82541ER: | |
872 | case E1000_DEV_ID_82541ER_LOM: | |
873 | case E1000_DEV_ID_82541GI: | |
874 | case E1000_DEV_ID_82541GI_LF: | |
875 | case E1000_DEV_ID_82541GI_MOBILE: | |
876 | case E1000_DEV_ID_82544EI_COPPER: | |
877 | case E1000_DEV_ID_82544EI_FIBER: | |
878 | case E1000_DEV_ID_82544GC_COPPER: | |
879 | case E1000_DEV_ID_82544GC_LOM: | |
880 | case E1000_DEV_ID_82545EM_COPPER: | |
881 | case E1000_DEV_ID_82545EM_FIBER: | |
882 | case E1000_DEV_ID_82546EB_COPPER: | |
883 | case E1000_DEV_ID_82546EB_FIBER: | |
884 | case E1000_DEV_ID_82546EB_QUAD_COPPER: | |
885 | return true; | |
886 | default: | |
887 | return false; | |
888 | } | |
889 | } | |
890 | ||
0e7614bc SH |
891 | static const struct net_device_ops e1000_netdev_ops = { |
892 | .ndo_open = e1000_open, | |
893 | .ndo_stop = e1000_close, | |
00829823 | 894 | .ndo_start_xmit = e1000_xmit_frame, |
0e7614bc SH |
895 | .ndo_get_stats = e1000_get_stats, |
896 | .ndo_set_rx_mode = e1000_set_rx_mode, | |
897 | .ndo_set_mac_address = e1000_set_mac, | |
898 | .ndo_tx_timeout = e1000_tx_timeout, | |
899 | .ndo_change_mtu = e1000_change_mtu, | |
900 | .ndo_do_ioctl = e1000_ioctl, | |
901 | .ndo_validate_addr = eth_validate_addr, | |
902 | ||
903 | .ndo_vlan_rx_register = e1000_vlan_rx_register, | |
904 | .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, | |
905 | .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, | |
906 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
907 | .ndo_poll_controller = e1000_netpoll, | |
908 | #endif | |
909 | }; | |
910 | ||
1da177e4 LT |
911 | /** |
912 | * e1000_probe - Device Initialization Routine | |
913 | * @pdev: PCI device information struct | |
914 | * @ent: entry in e1000_pci_tbl | |
915 | * | |
916 | * Returns 0 on success, negative on failure | |
917 | * | |
918 | * e1000_probe initializes an adapter identified by a pci_dev structure. | |
919 | * The OS initialization, configuring of the adapter private structure, | |
920 | * and a hardware reset occur. | |
921 | **/ | |
1dc32918 JP |
922 | static int __devinit e1000_probe(struct pci_dev *pdev, |
923 | const struct pci_device_id *ent) | |
1da177e4 LT |
924 | { |
925 | struct net_device *netdev; | |
926 | struct e1000_adapter *adapter; | |
1dc32918 | 927 | struct e1000_hw *hw; |
2d7edb92 | 928 | |
1da177e4 | 929 | static int cards_found = 0; |
120cd576 | 930 | static int global_quad_port_a = 0; /* global ksp3 port a indication */ |
2d7edb92 | 931 | int i, err, pci_using_dac; |
406874a7 JP |
932 | u16 eeprom_data = 0; |
933 | u16 eeprom_apme_mask = E1000_EEPROM_APME; | |
81250297 | 934 | int bars, need_ioport; |
0795af57 | 935 | |
81250297 TI |
936 | /* do not allocate ioport bars when not needed */ |
937 | need_ioport = e1000_is_need_ioport(pdev); | |
938 | if (need_ioport) { | |
939 | bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO); | |
940 | err = pci_enable_device(pdev); | |
941 | } else { | |
942 | bars = pci_select_bars(pdev, IORESOURCE_MEM); | |
943 | err = pci_enable_device(pdev); | |
944 | } | |
c7be73bc | 945 | if (err) |
1da177e4 LT |
946 | return err; |
947 | ||
c7be73bc JP |
948 | if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK) && |
949 | !pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK)) { | |
1da177e4 LT |
950 | pci_using_dac = 1; |
951 | } else { | |
c7be73bc JP |
952 | err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); |
953 | if (err) { | |
954 | err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); | |
955 | if (err) { | |
956 | E1000_ERR("No usable DMA configuration, " | |
957 | "aborting\n"); | |
958 | goto err_dma; | |
959 | } | |
1da177e4 LT |
960 | } |
961 | pci_using_dac = 0; | |
962 | } | |
963 | ||
81250297 | 964 | err = pci_request_selected_regions(pdev, bars, e1000_driver_name); |
c7be73bc | 965 | if (err) |
6dd62ab0 | 966 | goto err_pci_reg; |
1da177e4 LT |
967 | |
968 | pci_set_master(pdev); | |
969 | ||
6dd62ab0 | 970 | err = -ENOMEM; |
1da177e4 | 971 | netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
6dd62ab0 | 972 | if (!netdev) |
1da177e4 | 973 | goto err_alloc_etherdev; |
1da177e4 | 974 | |
1da177e4 LT |
975 | SET_NETDEV_DEV(netdev, &pdev->dev); |
976 | ||
977 | pci_set_drvdata(pdev, netdev); | |
60490fe0 | 978 | adapter = netdev_priv(netdev); |
1da177e4 LT |
979 | adapter->netdev = netdev; |
980 | adapter->pdev = pdev; | |
1da177e4 | 981 | adapter->msg_enable = (1 << debug) - 1; |
81250297 TI |
982 | adapter->bars = bars; |
983 | adapter->need_ioport = need_ioport; | |
1da177e4 | 984 | |
1dc32918 JP |
985 | hw = &adapter->hw; |
986 | hw->back = adapter; | |
987 | ||
6dd62ab0 | 988 | err = -EIO; |
275f165f | 989 | hw->hw_addr = pci_ioremap_bar(pdev, BAR_0); |
1dc32918 | 990 | if (!hw->hw_addr) |
1da177e4 | 991 | goto err_ioremap; |
1da177e4 | 992 | |
81250297 TI |
993 | if (adapter->need_ioport) { |
994 | for (i = BAR_1; i <= BAR_5; i++) { | |
995 | if (pci_resource_len(pdev, i) == 0) | |
996 | continue; | |
997 | if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { | |
998 | hw->io_base = pci_resource_start(pdev, i); | |
999 | break; | |
1000 | } | |
1da177e4 LT |
1001 | } |
1002 | } | |
1003 | ||
0e7614bc | 1004 | netdev->netdev_ops = &e1000_netdev_ops; |
1da177e4 | 1005 | e1000_set_ethtool_ops(netdev); |
1da177e4 | 1006 | netdev->watchdog_timeo = 5 * HZ; |
bea3348e | 1007 | netif_napi_add(netdev, &adapter->napi, e1000_clean, 64); |
0e7614bc | 1008 | |
0eb5a34c | 1009 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
1da177e4 | 1010 | |
1da177e4 LT |
1011 | adapter->bd_number = cards_found; |
1012 | ||
1013 | /* setup the private structure */ | |
1014 | ||
c7be73bc JP |
1015 | err = e1000_sw_init(adapter); |
1016 | if (err) | |
1da177e4 LT |
1017 | goto err_sw_init; |
1018 | ||
6dd62ab0 | 1019 | err = -EIO; |
cd94dd0b AK |
1020 | /* Flash BAR mapping must happen after e1000_sw_init |
1021 | * because it depends on mac_type */ | |
1dc32918 | 1022 | if ((hw->mac_type == e1000_ich8lan) && |
cd94dd0b | 1023 | (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) { |
275f165f | 1024 | hw->flash_address = pci_ioremap_bar(pdev, 1); |
1dc32918 | 1025 | if (!hw->flash_address) |
cd94dd0b | 1026 | goto err_flashmap; |
cd94dd0b AK |
1027 | } |
1028 | ||
1dc32918 | 1029 | if (e1000_check_phy_reset_block(hw)) |
2d7edb92 MC |
1030 | DPRINTK(PROBE, INFO, "PHY reset is blocked due to SOL/IDER session.\n"); |
1031 | ||
1dc32918 | 1032 | if (hw->mac_type >= e1000_82543) { |
1da177e4 LT |
1033 | netdev->features = NETIF_F_SG | |
1034 | NETIF_F_HW_CSUM | | |
1035 | NETIF_F_HW_VLAN_TX | | |
1036 | NETIF_F_HW_VLAN_RX | | |
1037 | NETIF_F_HW_VLAN_FILTER; | |
1dc32918 | 1038 | if (hw->mac_type == e1000_ich8lan) |
cd94dd0b | 1039 | netdev->features &= ~NETIF_F_HW_VLAN_FILTER; |
1da177e4 LT |
1040 | } |
1041 | ||
1dc32918 JP |
1042 | if ((hw->mac_type >= e1000_82544) && |
1043 | (hw->mac_type != e1000_82547)) | |
1da177e4 | 1044 | netdev->features |= NETIF_F_TSO; |
2d7edb92 | 1045 | |
1dc32918 | 1046 | if (hw->mac_type > e1000_82547_rev_2) |
87ca4e5b | 1047 | netdev->features |= NETIF_F_TSO6; |
96838a40 | 1048 | if (pci_using_dac) |
1da177e4 LT |
1049 | netdev->features |= NETIF_F_HIGHDMA; |
1050 | ||
76c224bc AK |
1051 | netdev->features |= NETIF_F_LLTX; |
1052 | ||
20501a69 PM |
1053 | netdev->vlan_features |= NETIF_F_TSO; |
1054 | netdev->vlan_features |= NETIF_F_TSO6; | |
1055 | netdev->vlan_features |= NETIF_F_HW_CSUM; | |
1056 | netdev->vlan_features |= NETIF_F_SG; | |
1057 | ||
1dc32918 | 1058 | adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw); |
2d7edb92 | 1059 | |
cd94dd0b | 1060 | /* initialize eeprom parameters */ |
1dc32918 | 1061 | if (e1000_init_eeprom_params(hw)) { |
cd94dd0b | 1062 | E1000_ERR("EEPROM initialization failed\n"); |
6dd62ab0 | 1063 | goto err_eeprom; |
cd94dd0b AK |
1064 | } |
1065 | ||
96838a40 | 1066 | /* before reading the EEPROM, reset the controller to |
1da177e4 | 1067 | * put the device in a known good starting state */ |
96838a40 | 1068 | |
1dc32918 | 1069 | e1000_reset_hw(hw); |
1da177e4 LT |
1070 | |
1071 | /* make sure the EEPROM is good */ | |
1dc32918 | 1072 | if (e1000_validate_eeprom_checksum(hw) < 0) { |
1da177e4 | 1073 | DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n"); |
67b3c27c AK |
1074 | e1000_dump_eeprom(adapter); |
1075 | /* | |
1076 | * set MAC address to all zeroes to invalidate and temporary | |
1077 | * disable this device for the user. This blocks regular | |
1078 | * traffic while still permitting ethtool ioctls from reaching | |
1079 | * the hardware as well as allowing the user to run the | |
1080 | * interface after manually setting a hw addr using | |
1081 | * `ip set address` | |
1082 | */ | |
1dc32918 | 1083 | memset(hw->mac_addr, 0, netdev->addr_len); |
67b3c27c AK |
1084 | } else { |
1085 | /* copy the MAC address out of the EEPROM */ | |
1dc32918 | 1086 | if (e1000_read_mac_addr(hw)) |
67b3c27c | 1087 | DPRINTK(PROBE, ERR, "EEPROM Read Error\n"); |
1da177e4 | 1088 | } |
67b3c27c | 1089 | /* don't block initalization here due to bad MAC address */ |
1dc32918 JP |
1090 | memcpy(netdev->dev_addr, hw->mac_addr, netdev->addr_len); |
1091 | memcpy(netdev->perm_addr, hw->mac_addr, netdev->addr_len); | |
1da177e4 | 1092 | |
67b3c27c | 1093 | if (!is_valid_ether_addr(netdev->perm_addr)) |
1da177e4 | 1094 | DPRINTK(PROBE, ERR, "Invalid MAC Address\n"); |
1da177e4 | 1095 | |
1dc32918 | 1096 | e1000_get_bus_info(hw); |
1da177e4 LT |
1097 | |
1098 | init_timer(&adapter->tx_fifo_stall_timer); | |
1099 | adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall; | |
e982f17c | 1100 | adapter->tx_fifo_stall_timer.data = (unsigned long)adapter; |
1da177e4 LT |
1101 | |
1102 | init_timer(&adapter->watchdog_timer); | |
1103 | adapter->watchdog_timer.function = &e1000_watchdog; | |
1104 | adapter->watchdog_timer.data = (unsigned long) adapter; | |
1105 | ||
1da177e4 LT |
1106 | init_timer(&adapter->phy_info_timer); |
1107 | adapter->phy_info_timer.function = &e1000_update_phy_info; | |
e982f17c | 1108 | adapter->phy_info_timer.data = (unsigned long)adapter; |
1da177e4 | 1109 | |
65f27f38 | 1110 | INIT_WORK(&adapter->reset_task, e1000_reset_task); |
1da177e4 | 1111 | |
1da177e4 LT |
1112 | e1000_check_options(adapter); |
1113 | ||
1114 | /* Initial Wake on LAN setting | |
1115 | * If APM wake is enabled in the EEPROM, | |
1116 | * enable the ACPI Magic Packet filter | |
1117 | */ | |
1118 | ||
1dc32918 | 1119 | switch (hw->mac_type) { |
1da177e4 LT |
1120 | case e1000_82542_rev2_0: |
1121 | case e1000_82542_rev2_1: | |
1122 | case e1000_82543: | |
1123 | break; | |
1124 | case e1000_82544: | |
1dc32918 | 1125 | e1000_read_eeprom(hw, |
1da177e4 LT |
1126 | EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); |
1127 | eeprom_apme_mask = E1000_EEPROM_82544_APM; | |
1128 | break; | |
cd94dd0b | 1129 | case e1000_ich8lan: |
1dc32918 | 1130 | e1000_read_eeprom(hw, |
cd94dd0b AK |
1131 | EEPROM_INIT_CONTROL1_REG, 1, &eeprom_data); |
1132 | eeprom_apme_mask = E1000_EEPROM_ICH8_APME; | |
1133 | break; | |
1da177e4 LT |
1134 | case e1000_82546: |
1135 | case e1000_82546_rev_3: | |
fd803241 | 1136 | case e1000_82571: |
6418ecc6 | 1137 | case e1000_80003es2lan: |
1dc32918 JP |
1138 | if (er32(STATUS) & E1000_STATUS_FUNC_1){ |
1139 | e1000_read_eeprom(hw, | |
1da177e4 LT |
1140 | EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); |
1141 | break; | |
1142 | } | |
1143 | /* Fall Through */ | |
1144 | default: | |
1dc32918 | 1145 | e1000_read_eeprom(hw, |
1da177e4 LT |
1146 | EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); |
1147 | break; | |
1148 | } | |
96838a40 | 1149 | if (eeprom_data & eeprom_apme_mask) |
120cd576 JB |
1150 | adapter->eeprom_wol |= E1000_WUFC_MAG; |
1151 | ||
1152 | /* now that we have the eeprom settings, apply the special cases | |
1153 | * where the eeprom may be wrong or the board simply won't support | |
1154 | * wake on lan on a particular port */ | |
1155 | switch (pdev->device) { | |
1156 | case E1000_DEV_ID_82546GB_PCIE: | |
1157 | adapter->eeprom_wol = 0; | |
1158 | break; | |
1159 | case E1000_DEV_ID_82546EB_FIBER: | |
1160 | case E1000_DEV_ID_82546GB_FIBER: | |
1161 | case E1000_DEV_ID_82571EB_FIBER: | |
1162 | /* Wake events only supported on port A for dual fiber | |
1163 | * regardless of eeprom setting */ | |
1dc32918 | 1164 | if (er32(STATUS) & E1000_STATUS_FUNC_1) |
120cd576 JB |
1165 | adapter->eeprom_wol = 0; |
1166 | break; | |
1167 | case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3: | |
5881cde8 | 1168 | case E1000_DEV_ID_82571EB_QUAD_COPPER: |
ce57a02c | 1169 | case E1000_DEV_ID_82571EB_QUAD_FIBER: |
fc2307d0 | 1170 | case E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE: |
f4ec7f98 | 1171 | case E1000_DEV_ID_82571PT_QUAD_COPPER: |
120cd576 JB |
1172 | /* if quad port adapter, disable WoL on all but port A */ |
1173 | if (global_quad_port_a != 0) | |
1174 | adapter->eeprom_wol = 0; | |
1175 | else | |
1176 | adapter->quad_port_a = 1; | |
1177 | /* Reset for multiple quad port adapters */ | |
1178 | if (++global_quad_port_a == 4) | |
1179 | global_quad_port_a = 0; | |
1180 | break; | |
1181 | } | |
1182 | ||
1183 | /* initialize the wol settings based on the eeprom settings */ | |
1184 | adapter->wol = adapter->eeprom_wol; | |
de126489 | 1185 | device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
1da177e4 | 1186 | |
fb3d47d4 | 1187 | /* print bus type/speed/width info */ |
fb3d47d4 JK |
1188 | DPRINTK(PROBE, INFO, "(PCI%s:%s:%s) ", |
1189 | ((hw->bus_type == e1000_bus_type_pcix) ? "-X" : | |
1190 | (hw->bus_type == e1000_bus_type_pci_express ? " Express":"")), | |
1191 | ((hw->bus_speed == e1000_bus_speed_2500) ? "2.5Gb/s" : | |
1192 | (hw->bus_speed == e1000_bus_speed_133) ? "133MHz" : | |
1193 | (hw->bus_speed == e1000_bus_speed_120) ? "120MHz" : | |
1194 | (hw->bus_speed == e1000_bus_speed_100) ? "100MHz" : | |
1195 | (hw->bus_speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"), | |
1196 | ((hw->bus_width == e1000_bus_width_64) ? "64-bit" : | |
1197 | (hw->bus_width == e1000_bus_width_pciex_4) ? "Width x4" : | |
1198 | (hw->bus_width == e1000_bus_width_pciex_1) ? "Width x1" : | |
1199 | "32-bit")); | |
fb3d47d4 | 1200 | |
e174961c | 1201 | printk("%pM\n", netdev->dev_addr); |
fb3d47d4 | 1202 | |
1dc32918 | 1203 | if (hw->bus_type == e1000_bus_type_pci_express) { |
14782ca8 AK |
1204 | DPRINTK(PROBE, WARNING, "This device (id %04x:%04x) will no " |
1205 | "longer be supported by this driver in the future.\n", | |
1206 | pdev->vendor, pdev->device); | |
1207 | DPRINTK(PROBE, WARNING, "please use the \"e1000e\" " | |
1208 | "driver instead.\n"); | |
1209 | } | |
1210 | ||
1da177e4 LT |
1211 | /* reset the hardware with the new settings */ |
1212 | e1000_reset(adapter); | |
1213 | ||
b55ccb35 JK |
1214 | /* If the controller is 82573 and f/w is AMT, do not set |
1215 | * DRV_LOAD until the interface is up. For all other cases, | |
1216 | * let the f/w know that the h/w is now under the control | |
1217 | * of the driver. */ | |
1dc32918 JP |
1218 | if (hw->mac_type != e1000_82573 || |
1219 | !e1000_check_mng_mode(hw)) | |
b55ccb35 | 1220 | e1000_get_hw_control(adapter); |
2d7edb92 | 1221 | |
1314bbf3 AK |
1222 | /* tell the stack to leave us alone until e1000_open() is called */ |
1223 | netif_carrier_off(netdev); | |
1224 | netif_stop_queue(netdev); | |
416b5d10 AK |
1225 | |
1226 | strcpy(netdev->name, "eth%d"); | |
c7be73bc JP |
1227 | err = register_netdev(netdev); |
1228 | if (err) | |
416b5d10 | 1229 | goto err_register; |
1314bbf3 | 1230 | |
1da177e4 LT |
1231 | DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n"); |
1232 | ||
1233 | cards_found++; | |
1234 | return 0; | |
1235 | ||
1236 | err_register: | |
6dd62ab0 VA |
1237 | e1000_release_hw_control(adapter); |
1238 | err_eeprom: | |
1dc32918 JP |
1239 | if (!e1000_check_phy_reset_block(hw)) |
1240 | e1000_phy_hw_reset(hw); | |
6dd62ab0 | 1241 | |
1dc32918 JP |
1242 | if (hw->flash_address) |
1243 | iounmap(hw->flash_address); | |
cd94dd0b | 1244 | err_flashmap: |
6dd62ab0 VA |
1245 | for (i = 0; i < adapter->num_rx_queues; i++) |
1246 | dev_put(&adapter->polling_netdev[i]); | |
6dd62ab0 VA |
1247 | |
1248 | kfree(adapter->tx_ring); | |
1249 | kfree(adapter->rx_ring); | |
6dd62ab0 | 1250 | kfree(adapter->polling_netdev); |
1da177e4 | 1251 | err_sw_init: |
1dc32918 | 1252 | iounmap(hw->hw_addr); |
1da177e4 LT |
1253 | err_ioremap: |
1254 | free_netdev(netdev); | |
1255 | err_alloc_etherdev: | |
81250297 | 1256 | pci_release_selected_regions(pdev, bars); |
6dd62ab0 VA |
1257 | err_pci_reg: |
1258 | err_dma: | |
1259 | pci_disable_device(pdev); | |
1da177e4 LT |
1260 | return err; |
1261 | } | |
1262 | ||
1263 | /** | |
1264 | * e1000_remove - Device Removal Routine | |
1265 | * @pdev: PCI device information struct | |
1266 | * | |
1267 | * e1000_remove is called by the PCI subsystem to alert the driver | |
1268 | * that it should release a PCI device. The could be caused by a | |
1269 | * Hot-Plug event, or because the driver is going to be removed from | |
1270 | * memory. | |
1271 | **/ | |
1272 | ||
64798845 | 1273 | static void __devexit e1000_remove(struct pci_dev *pdev) |
1da177e4 LT |
1274 | { |
1275 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 1276 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 1277 | struct e1000_hw *hw = &adapter->hw; |
581d708e | 1278 | int i; |
1da177e4 | 1279 | |
28e53bdd | 1280 | cancel_work_sync(&adapter->reset_task); |
be2b28ed | 1281 | |
0fccd0e9 | 1282 | e1000_release_manageability(adapter); |
1da177e4 | 1283 | |
b55ccb35 JK |
1284 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
1285 | * would have already happened in close and is redundant. */ | |
1286 | e1000_release_hw_control(adapter); | |
2d7edb92 | 1287 | |
f56799ea | 1288 | for (i = 0; i < adapter->num_rx_queues; i++) |
15333061 | 1289 | dev_put(&adapter->polling_netdev[i]); |
1da177e4 | 1290 | |
bea3348e SH |
1291 | unregister_netdev(netdev); |
1292 | ||
1dc32918 JP |
1293 | if (!e1000_check_phy_reset_block(hw)) |
1294 | e1000_phy_hw_reset(hw); | |
1da177e4 | 1295 | |
24025e4e MC |
1296 | kfree(adapter->tx_ring); |
1297 | kfree(adapter->rx_ring); | |
24025e4e | 1298 | kfree(adapter->polling_netdev); |
24025e4e | 1299 | |
1dc32918 JP |
1300 | iounmap(hw->hw_addr); |
1301 | if (hw->flash_address) | |
1302 | iounmap(hw->flash_address); | |
81250297 | 1303 | pci_release_selected_regions(pdev, adapter->bars); |
1da177e4 LT |
1304 | |
1305 | free_netdev(netdev); | |
1306 | ||
1307 | pci_disable_device(pdev); | |
1308 | } | |
1309 | ||
1310 | /** | |
1311 | * e1000_sw_init - Initialize general software structures (struct e1000_adapter) | |
1312 | * @adapter: board private structure to initialize | |
1313 | * | |
1314 | * e1000_sw_init initializes the Adapter private data structure. | |
1315 | * Fields are initialized based on PCI device information and | |
1316 | * OS network device settings (MTU size). | |
1317 | **/ | |
1318 | ||
64798845 | 1319 | static int __devinit e1000_sw_init(struct e1000_adapter *adapter) |
1da177e4 LT |
1320 | { |
1321 | struct e1000_hw *hw = &adapter->hw; | |
1322 | struct net_device *netdev = adapter->netdev; | |
1323 | struct pci_dev *pdev = adapter->pdev; | |
581d708e | 1324 | int i; |
1da177e4 LT |
1325 | |
1326 | /* PCI config space info */ | |
1327 | ||
1328 | hw->vendor_id = pdev->vendor; | |
1329 | hw->device_id = pdev->device; | |
1330 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
1331 | hw->subsystem_id = pdev->subsystem_device; | |
44c10138 | 1332 | hw->revision_id = pdev->revision; |
1da177e4 LT |
1333 | |
1334 | pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); | |
1335 | ||
eb0f8054 | 1336 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
1da177e4 LT |
1337 | hw->max_frame_size = netdev->mtu + |
1338 | ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; | |
1339 | hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; | |
1340 | ||
1341 | /* identify the MAC */ | |
1342 | ||
96838a40 | 1343 | if (e1000_set_mac_type(hw)) { |
1da177e4 LT |
1344 | DPRINTK(PROBE, ERR, "Unknown MAC Type\n"); |
1345 | return -EIO; | |
1346 | } | |
1347 | ||
96838a40 | 1348 | switch (hw->mac_type) { |
1da177e4 LT |
1349 | default: |
1350 | break; | |
1351 | case e1000_82541: | |
1352 | case e1000_82547: | |
1353 | case e1000_82541_rev_2: | |
1354 | case e1000_82547_rev_2: | |
1355 | hw->phy_init_script = 1; | |
1356 | break; | |
1357 | } | |
1358 | ||
1359 | e1000_set_media_type(hw); | |
1360 | ||
c3033b01 JP |
1361 | hw->wait_autoneg_complete = false; |
1362 | hw->tbi_compatibility_en = true; | |
1363 | hw->adaptive_ifs = true; | |
1da177e4 LT |
1364 | |
1365 | /* Copper options */ | |
1366 | ||
96838a40 | 1367 | if (hw->media_type == e1000_media_type_copper) { |
1da177e4 | 1368 | hw->mdix = AUTO_ALL_MODES; |
c3033b01 | 1369 | hw->disable_polarity_correction = false; |
1da177e4 LT |
1370 | hw->master_slave = E1000_MASTER_SLAVE; |
1371 | } | |
1372 | ||
f56799ea JK |
1373 | adapter->num_tx_queues = 1; |
1374 | adapter->num_rx_queues = 1; | |
581d708e MC |
1375 | |
1376 | if (e1000_alloc_queues(adapter)) { | |
1377 | DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n"); | |
1378 | return -ENOMEM; | |
1379 | } | |
1380 | ||
f56799ea | 1381 | for (i = 0; i < adapter->num_rx_queues; i++) { |
581d708e | 1382 | adapter->polling_netdev[i].priv = adapter; |
581d708e MC |
1383 | dev_hold(&adapter->polling_netdev[i]); |
1384 | set_bit(__LINK_STATE_START, &adapter->polling_netdev[i].state); | |
1385 | } | |
7bfa4816 | 1386 | spin_lock_init(&adapter->tx_queue_lock); |
24025e4e | 1387 | |
47313054 | 1388 | /* Explicitly disable IRQ since the NIC can be in any state. */ |
47313054 HX |
1389 | e1000_irq_disable(adapter); |
1390 | ||
1da177e4 | 1391 | spin_lock_init(&adapter->stats_lock); |
1da177e4 | 1392 | |
1314bbf3 AK |
1393 | set_bit(__E1000_DOWN, &adapter->flags); |
1394 | ||
1da177e4 LT |
1395 | return 0; |
1396 | } | |
1397 | ||
581d708e MC |
1398 | /** |
1399 | * e1000_alloc_queues - Allocate memory for all rings | |
1400 | * @adapter: board private structure to initialize | |
1401 | * | |
1402 | * We allocate one ring per queue at run-time since we don't know the | |
1403 | * number of queues at compile-time. The polling_netdev array is | |
1404 | * intended for Multiqueue, but should work fine with a single queue. | |
1405 | **/ | |
1406 | ||
64798845 | 1407 | static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter) |
581d708e | 1408 | { |
1c7e5b12 YB |
1409 | adapter->tx_ring = kcalloc(adapter->num_tx_queues, |
1410 | sizeof(struct e1000_tx_ring), GFP_KERNEL); | |
581d708e MC |
1411 | if (!adapter->tx_ring) |
1412 | return -ENOMEM; | |
581d708e | 1413 | |
1c7e5b12 YB |
1414 | adapter->rx_ring = kcalloc(adapter->num_rx_queues, |
1415 | sizeof(struct e1000_rx_ring), GFP_KERNEL); | |
581d708e MC |
1416 | if (!adapter->rx_ring) { |
1417 | kfree(adapter->tx_ring); | |
1418 | return -ENOMEM; | |
1419 | } | |
581d708e | 1420 | |
1c7e5b12 YB |
1421 | adapter->polling_netdev = kcalloc(adapter->num_rx_queues, |
1422 | sizeof(struct net_device), | |
1423 | GFP_KERNEL); | |
581d708e MC |
1424 | if (!adapter->polling_netdev) { |
1425 | kfree(adapter->tx_ring); | |
1426 | kfree(adapter->rx_ring); | |
1427 | return -ENOMEM; | |
1428 | } | |
581d708e MC |
1429 | |
1430 | return E1000_SUCCESS; | |
1431 | } | |
1432 | ||
1da177e4 LT |
1433 | /** |
1434 | * e1000_open - Called when a network interface is made active | |
1435 | * @netdev: network interface device structure | |
1436 | * | |
1437 | * Returns 0 on success, negative value on failure | |
1438 | * | |
1439 | * The open entry point is called when a network interface is made | |
1440 | * active by the system (IFF_UP). At this point all resources needed | |
1441 | * for transmit and receive operations are allocated, the interrupt | |
1442 | * handler is registered with the OS, the watchdog timer is started, | |
1443 | * and the stack is notified that the interface is ready. | |
1444 | **/ | |
1445 | ||
64798845 | 1446 | static int e1000_open(struct net_device *netdev) |
1da177e4 | 1447 | { |
60490fe0 | 1448 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 1449 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
1450 | int err; |
1451 | ||
2db10a08 | 1452 | /* disallow open during test */ |
1314bbf3 | 1453 | if (test_bit(__E1000_TESTING, &adapter->flags)) |
2db10a08 AK |
1454 | return -EBUSY; |
1455 | ||
1da177e4 | 1456 | /* allocate transmit descriptors */ |
e0aac5a2 AK |
1457 | err = e1000_setup_all_tx_resources(adapter); |
1458 | if (err) | |
1da177e4 LT |
1459 | goto err_setup_tx; |
1460 | ||
1461 | /* allocate receive descriptors */ | |
e0aac5a2 | 1462 | err = e1000_setup_all_rx_resources(adapter); |
b5bf28cd | 1463 | if (err) |
e0aac5a2 | 1464 | goto err_setup_rx; |
b5bf28cd | 1465 | |
79f05bf0 AK |
1466 | e1000_power_up_phy(adapter); |
1467 | ||
2d7edb92 | 1468 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
1dc32918 | 1469 | if ((hw->mng_cookie.status & |
2d7edb92 MC |
1470 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { |
1471 | e1000_update_mng_vlan(adapter); | |
1472 | } | |
1da177e4 | 1473 | |
b55ccb35 JK |
1474 | /* If AMT is enabled, let the firmware know that the network |
1475 | * interface is now open */ | |
1dc32918 JP |
1476 | if (hw->mac_type == e1000_82573 && |
1477 | e1000_check_mng_mode(hw)) | |
b55ccb35 JK |
1478 | e1000_get_hw_control(adapter); |
1479 | ||
e0aac5a2 AK |
1480 | /* before we allocate an interrupt, we must be ready to handle it. |
1481 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt | |
1482 | * as soon as we call pci_request_irq, so we have to setup our | |
1483 | * clean_rx handler before we do so. */ | |
1484 | e1000_configure(adapter); | |
1485 | ||
1486 | err = e1000_request_irq(adapter); | |
1487 | if (err) | |
1488 | goto err_req_irq; | |
1489 | ||
1490 | /* From here on the code is the same as e1000_up() */ | |
1491 | clear_bit(__E1000_DOWN, &adapter->flags); | |
1492 | ||
bea3348e | 1493 | napi_enable(&adapter->napi); |
47313054 | 1494 | |
e0aac5a2 AK |
1495 | e1000_irq_enable(adapter); |
1496 | ||
076152d5 BH |
1497 | netif_start_queue(netdev); |
1498 | ||
e0aac5a2 | 1499 | /* fire a link status change interrupt to start the watchdog */ |
1dc32918 | 1500 | ew32(ICS, E1000_ICS_LSC); |
e0aac5a2 | 1501 | |
1da177e4 LT |
1502 | return E1000_SUCCESS; |
1503 | ||
b5bf28cd | 1504 | err_req_irq: |
e0aac5a2 AK |
1505 | e1000_release_hw_control(adapter); |
1506 | e1000_power_down_phy(adapter); | |
581d708e | 1507 | e1000_free_all_rx_resources(adapter); |
1da177e4 | 1508 | err_setup_rx: |
581d708e | 1509 | e1000_free_all_tx_resources(adapter); |
1da177e4 LT |
1510 | err_setup_tx: |
1511 | e1000_reset(adapter); | |
1512 | ||
1513 | return err; | |
1514 | } | |
1515 | ||
1516 | /** | |
1517 | * e1000_close - Disables a network interface | |
1518 | * @netdev: network interface device structure | |
1519 | * | |
1520 | * Returns 0, this is not allowed to fail | |
1521 | * | |
1522 | * The close entry point is called when an interface is de-activated | |
1523 | * by the OS. The hardware is still under the drivers control, but | |
1524 | * needs to be disabled. A global MAC reset is issued to stop the | |
1525 | * hardware, and all transmit and receive resources are freed. | |
1526 | **/ | |
1527 | ||
64798845 | 1528 | static int e1000_close(struct net_device *netdev) |
1da177e4 | 1529 | { |
60490fe0 | 1530 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 1531 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 1532 | |
2db10a08 | 1533 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
1da177e4 | 1534 | e1000_down(adapter); |
79f05bf0 | 1535 | e1000_power_down_phy(adapter); |
2db10a08 | 1536 | e1000_free_irq(adapter); |
1da177e4 | 1537 | |
581d708e MC |
1538 | e1000_free_all_tx_resources(adapter); |
1539 | e1000_free_all_rx_resources(adapter); | |
1da177e4 | 1540 | |
4666560a BA |
1541 | /* kill manageability vlan ID if supported, but not if a vlan with |
1542 | * the same ID is registered on the host OS (let 8021q kill it) */ | |
1dc32918 | 1543 | if ((hw->mng_cookie.status & |
4666560a BA |
1544 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
1545 | !(adapter->vlgrp && | |
5c15bdec | 1546 | vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) { |
2d7edb92 MC |
1547 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
1548 | } | |
b55ccb35 JK |
1549 | |
1550 | /* If AMT is enabled, let the firmware know that the network | |
1551 | * interface is now closed */ | |
1dc32918 JP |
1552 | if (hw->mac_type == e1000_82573 && |
1553 | e1000_check_mng_mode(hw)) | |
b55ccb35 JK |
1554 | e1000_release_hw_control(adapter); |
1555 | ||
1da177e4 LT |
1556 | return 0; |
1557 | } | |
1558 | ||
1559 | /** | |
1560 | * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary | |
1561 | * @adapter: address of board private structure | |
2d7edb92 MC |
1562 | * @start: address of beginning of memory |
1563 | * @len: length of memory | |
1da177e4 | 1564 | **/ |
64798845 JP |
1565 | static bool e1000_check_64k_bound(struct e1000_adapter *adapter, void *start, |
1566 | unsigned long len) | |
1da177e4 | 1567 | { |
1dc32918 | 1568 | struct e1000_hw *hw = &adapter->hw; |
e982f17c | 1569 | unsigned long begin = (unsigned long)start; |
1da177e4 LT |
1570 | unsigned long end = begin + len; |
1571 | ||
2648345f MC |
1572 | /* First rev 82545 and 82546 need to not allow any memory |
1573 | * write location to cross 64k boundary due to errata 23 */ | |
1dc32918 JP |
1574 | if (hw->mac_type == e1000_82545 || |
1575 | hw->mac_type == e1000_82546) { | |
c3033b01 | 1576 | return ((begin ^ (end - 1)) >> 16) != 0 ? false : true; |
1da177e4 LT |
1577 | } |
1578 | ||
c3033b01 | 1579 | return true; |
1da177e4 LT |
1580 | } |
1581 | ||
1582 | /** | |
1583 | * e1000_setup_tx_resources - allocate Tx resources (Descriptors) | |
1584 | * @adapter: board private structure | |
581d708e | 1585 | * @txdr: tx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1586 | * |
1587 | * Return 0 on success, negative on failure | |
1588 | **/ | |
1589 | ||
64798845 JP |
1590 | static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
1591 | struct e1000_tx_ring *txdr) | |
1da177e4 | 1592 | { |
1da177e4 LT |
1593 | struct pci_dev *pdev = adapter->pdev; |
1594 | int size; | |
1595 | ||
1596 | size = sizeof(struct e1000_buffer) * txdr->count; | |
cd94dd0b | 1597 | txdr->buffer_info = vmalloc(size); |
96838a40 | 1598 | if (!txdr->buffer_info) { |
2648345f MC |
1599 | DPRINTK(PROBE, ERR, |
1600 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1da177e4 LT |
1601 | return -ENOMEM; |
1602 | } | |
1603 | memset(txdr->buffer_info, 0, size); | |
1604 | ||
1605 | /* round up to nearest 4K */ | |
1606 | ||
1607 | txdr->size = txdr->count * sizeof(struct e1000_tx_desc); | |
9099cfb9 | 1608 | txdr->size = ALIGN(txdr->size, 4096); |
1da177e4 LT |
1609 | |
1610 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); | |
96838a40 | 1611 | if (!txdr->desc) { |
1da177e4 | 1612 | setup_tx_desc_die: |
1da177e4 | 1613 | vfree(txdr->buffer_info); |
2648345f MC |
1614 | DPRINTK(PROBE, ERR, |
1615 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1da177e4 LT |
1616 | return -ENOMEM; |
1617 | } | |
1618 | ||
2648345f | 1619 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1620 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
1621 | void *olddesc = txdr->desc; | |
1622 | dma_addr_t olddma = txdr->dma; | |
2648345f MC |
1623 | DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes " |
1624 | "at %p\n", txdr->size, txdr->desc); | |
1625 | /* Try again, without freeing the previous */ | |
1da177e4 | 1626 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); |
2648345f | 1627 | /* Failed allocation, critical failure */ |
96838a40 | 1628 | if (!txdr->desc) { |
1da177e4 LT |
1629 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1630 | goto setup_tx_desc_die; | |
1631 | } | |
1632 | ||
1633 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { | |
1634 | /* give up */ | |
2648345f MC |
1635 | pci_free_consistent(pdev, txdr->size, txdr->desc, |
1636 | txdr->dma); | |
1da177e4 LT |
1637 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1638 | DPRINTK(PROBE, ERR, | |
2648345f MC |
1639 | "Unable to allocate aligned memory " |
1640 | "for the transmit descriptor ring\n"); | |
1da177e4 LT |
1641 | vfree(txdr->buffer_info); |
1642 | return -ENOMEM; | |
1643 | } else { | |
2648345f | 1644 | /* Free old allocation, new allocation was successful */ |
1da177e4 LT |
1645 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1646 | } | |
1647 | } | |
1648 | memset(txdr->desc, 0, txdr->size); | |
1649 | ||
1650 | txdr->next_to_use = 0; | |
1651 | txdr->next_to_clean = 0; | |
2ae76d98 | 1652 | spin_lock_init(&txdr->tx_lock); |
1da177e4 LT |
1653 | |
1654 | return 0; | |
1655 | } | |
1656 | ||
581d708e MC |
1657 | /** |
1658 | * e1000_setup_all_tx_resources - wrapper to allocate Tx resources | |
1659 | * (Descriptors) for all queues | |
1660 | * @adapter: board private structure | |
1661 | * | |
581d708e MC |
1662 | * Return 0 on success, negative on failure |
1663 | **/ | |
1664 | ||
64798845 | 1665 | int e1000_setup_all_tx_resources(struct e1000_adapter *adapter) |
581d708e MC |
1666 | { |
1667 | int i, err = 0; | |
1668 | ||
f56799ea | 1669 | for (i = 0; i < adapter->num_tx_queues; i++) { |
581d708e MC |
1670 | err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
1671 | if (err) { | |
1672 | DPRINTK(PROBE, ERR, | |
1673 | "Allocation for Tx Queue %u failed\n", i); | |
3fbbc72e VA |
1674 | for (i-- ; i >= 0; i--) |
1675 | e1000_free_tx_resources(adapter, | |
1676 | &adapter->tx_ring[i]); | |
581d708e MC |
1677 | break; |
1678 | } | |
1679 | } | |
1680 | ||
1681 | return err; | |
1682 | } | |
1683 | ||
1da177e4 LT |
1684 | /** |
1685 | * e1000_configure_tx - Configure 8254x Transmit Unit after Reset | |
1686 | * @adapter: board private structure | |
1687 | * | |
1688 | * Configure the Tx unit of the MAC after a reset. | |
1689 | **/ | |
1690 | ||
64798845 | 1691 | static void e1000_configure_tx(struct e1000_adapter *adapter) |
1da177e4 | 1692 | { |
406874a7 | 1693 | u64 tdba; |
581d708e | 1694 | struct e1000_hw *hw = &adapter->hw; |
406874a7 JP |
1695 | u32 tdlen, tctl, tipg, tarc; |
1696 | u32 ipgr1, ipgr2; | |
1da177e4 LT |
1697 | |
1698 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1699 | ||
f56799ea | 1700 | switch (adapter->num_tx_queues) { |
24025e4e MC |
1701 | case 1: |
1702 | default: | |
581d708e MC |
1703 | tdba = adapter->tx_ring[0].dma; |
1704 | tdlen = adapter->tx_ring[0].count * | |
1705 | sizeof(struct e1000_tx_desc); | |
1dc32918 JP |
1706 | ew32(TDLEN, tdlen); |
1707 | ew32(TDBAH, (tdba >> 32)); | |
1708 | ew32(TDBAL, (tdba & 0x00000000ffffffffULL)); | |
1709 | ew32(TDT, 0); | |
1710 | ew32(TDH, 0); | |
6a951698 AK |
1711 | adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH); |
1712 | adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT); | |
24025e4e MC |
1713 | break; |
1714 | } | |
1da177e4 LT |
1715 | |
1716 | /* Set the default values for the Tx Inter Packet Gap timer */ | |
1dc32918 | 1717 | if (hw->mac_type <= e1000_82547_rev_2 && |
d89b6c67 JB |
1718 | (hw->media_type == e1000_media_type_fiber || |
1719 | hw->media_type == e1000_media_type_internal_serdes)) | |
0fadb059 JK |
1720 | tipg = DEFAULT_82543_TIPG_IPGT_FIBER; |
1721 | else | |
1722 | tipg = DEFAULT_82543_TIPG_IPGT_COPPER; | |
1723 | ||
581d708e | 1724 | switch (hw->mac_type) { |
1da177e4 LT |
1725 | case e1000_82542_rev2_0: |
1726 | case e1000_82542_rev2_1: | |
1727 | tipg = DEFAULT_82542_TIPG_IPGT; | |
0fadb059 JK |
1728 | ipgr1 = DEFAULT_82542_TIPG_IPGR1; |
1729 | ipgr2 = DEFAULT_82542_TIPG_IPGR2; | |
1da177e4 | 1730 | break; |
87041639 JK |
1731 | case e1000_80003es2lan: |
1732 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; | |
1733 | ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; | |
1734 | break; | |
1da177e4 | 1735 | default: |
0fadb059 JK |
1736 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
1737 | ipgr2 = DEFAULT_82543_TIPG_IPGR2; | |
1738 | break; | |
1da177e4 | 1739 | } |
0fadb059 JK |
1740 | tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; |
1741 | tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; | |
1dc32918 | 1742 | ew32(TIPG, tipg); |
1da177e4 LT |
1743 | |
1744 | /* Set the Tx Interrupt Delay register */ | |
1745 | ||
1dc32918 | 1746 | ew32(TIDV, adapter->tx_int_delay); |
581d708e | 1747 | if (hw->mac_type >= e1000_82540) |
1dc32918 | 1748 | ew32(TADV, adapter->tx_abs_int_delay); |
1da177e4 LT |
1749 | |
1750 | /* Program the Transmit Control Register */ | |
1751 | ||
1dc32918 | 1752 | tctl = er32(TCTL); |
1da177e4 | 1753 | tctl &= ~E1000_TCTL_CT; |
7e6c9861 | 1754 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
1da177e4 LT |
1755 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
1756 | ||
2ae76d98 | 1757 | if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) { |
1dc32918 | 1758 | tarc = er32(TARC0); |
90fb5135 AK |
1759 | /* set the speed mode bit, we'll clear it if we're not at |
1760 | * gigabit link later */ | |
09ae3e88 | 1761 | tarc |= (1 << 21); |
1dc32918 | 1762 | ew32(TARC0, tarc); |
87041639 | 1763 | } else if (hw->mac_type == e1000_80003es2lan) { |
1dc32918 | 1764 | tarc = er32(TARC0); |
87041639 | 1765 | tarc |= 1; |
1dc32918 JP |
1766 | ew32(TARC0, tarc); |
1767 | tarc = er32(TARC1); | |
87041639 | 1768 | tarc |= 1; |
1dc32918 | 1769 | ew32(TARC1, tarc); |
2ae76d98 MC |
1770 | } |
1771 | ||
581d708e | 1772 | e1000_config_collision_dist(hw); |
1da177e4 LT |
1773 | |
1774 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
6a042dab JB |
1775 | adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; |
1776 | ||
1777 | /* only set IDE if we are delaying interrupts using the timers */ | |
1778 | if (adapter->tx_int_delay) | |
1779 | adapter->txd_cmd |= E1000_TXD_CMD_IDE; | |
1da177e4 | 1780 | |
581d708e | 1781 | if (hw->mac_type < e1000_82543) |
1da177e4 LT |
1782 | adapter->txd_cmd |= E1000_TXD_CMD_RPS; |
1783 | else | |
1784 | adapter->txd_cmd |= E1000_TXD_CMD_RS; | |
1785 | ||
1786 | /* Cache if we're 82544 running in PCI-X because we'll | |
1787 | * need this to apply a workaround later in the send path. */ | |
581d708e MC |
1788 | if (hw->mac_type == e1000_82544 && |
1789 | hw->bus_type == e1000_bus_type_pcix) | |
1da177e4 | 1790 | adapter->pcix_82544 = 1; |
7e6c9861 | 1791 | |
1dc32918 | 1792 | ew32(TCTL, tctl); |
7e6c9861 | 1793 | |
1da177e4 LT |
1794 | } |
1795 | ||
1796 | /** | |
1797 | * e1000_setup_rx_resources - allocate Rx resources (Descriptors) | |
1798 | * @adapter: board private structure | |
581d708e | 1799 | * @rxdr: rx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1800 | * |
1801 | * Returns 0 on success, negative on failure | |
1802 | **/ | |
1803 | ||
64798845 JP |
1804 | static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
1805 | struct e1000_rx_ring *rxdr) | |
1da177e4 | 1806 | { |
1dc32918 | 1807 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 1808 | struct pci_dev *pdev = adapter->pdev; |
2d7edb92 | 1809 | int size, desc_len; |
1da177e4 LT |
1810 | |
1811 | size = sizeof(struct e1000_buffer) * rxdr->count; | |
cd94dd0b | 1812 | rxdr->buffer_info = vmalloc(size); |
581d708e | 1813 | if (!rxdr->buffer_info) { |
2648345f MC |
1814 | DPRINTK(PROBE, ERR, |
1815 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1da177e4 LT |
1816 | return -ENOMEM; |
1817 | } | |
1818 | memset(rxdr->buffer_info, 0, size); | |
1819 | ||
1dc32918 | 1820 | if (hw->mac_type <= e1000_82547_rev_2) |
2d7edb92 MC |
1821 | desc_len = sizeof(struct e1000_rx_desc); |
1822 | else | |
1823 | desc_len = sizeof(union e1000_rx_desc_packet_split); | |
1824 | ||
1da177e4 LT |
1825 | /* Round up to nearest 4K */ |
1826 | ||
2d7edb92 | 1827 | rxdr->size = rxdr->count * desc_len; |
9099cfb9 | 1828 | rxdr->size = ALIGN(rxdr->size, 4096); |
1da177e4 LT |
1829 | |
1830 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); | |
1831 | ||
581d708e MC |
1832 | if (!rxdr->desc) { |
1833 | DPRINTK(PROBE, ERR, | |
1834 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1da177e4 | 1835 | setup_rx_desc_die: |
1da177e4 LT |
1836 | vfree(rxdr->buffer_info); |
1837 | return -ENOMEM; | |
1838 | } | |
1839 | ||
2648345f | 1840 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1841 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
1842 | void *olddesc = rxdr->desc; | |
1843 | dma_addr_t olddma = rxdr->dma; | |
2648345f MC |
1844 | DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes " |
1845 | "at %p\n", rxdr->size, rxdr->desc); | |
1846 | /* Try again, without freeing the previous */ | |
1da177e4 | 1847 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); |
2648345f | 1848 | /* Failed allocation, critical failure */ |
581d708e | 1849 | if (!rxdr->desc) { |
1da177e4 | 1850 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
581d708e MC |
1851 | DPRINTK(PROBE, ERR, |
1852 | "Unable to allocate memory " | |
1853 | "for the receive descriptor ring\n"); | |
1da177e4 LT |
1854 | goto setup_rx_desc_die; |
1855 | } | |
1856 | ||
1857 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { | |
1858 | /* give up */ | |
2648345f MC |
1859 | pci_free_consistent(pdev, rxdr->size, rxdr->desc, |
1860 | rxdr->dma); | |
1da177e4 | 1861 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
2648345f MC |
1862 | DPRINTK(PROBE, ERR, |
1863 | "Unable to allocate aligned memory " | |
1864 | "for the receive descriptor ring\n"); | |
581d708e | 1865 | goto setup_rx_desc_die; |
1da177e4 | 1866 | } else { |
2648345f | 1867 | /* Free old allocation, new allocation was successful */ |
1da177e4 LT |
1868 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
1869 | } | |
1870 | } | |
1871 | memset(rxdr->desc, 0, rxdr->size); | |
1872 | ||
1873 | rxdr->next_to_clean = 0; | |
1874 | rxdr->next_to_use = 0; | |
1875 | ||
1876 | return 0; | |
1877 | } | |
1878 | ||
581d708e MC |
1879 | /** |
1880 | * e1000_setup_all_rx_resources - wrapper to allocate Rx resources | |
1881 | * (Descriptors) for all queues | |
1882 | * @adapter: board private structure | |
1883 | * | |
581d708e MC |
1884 | * Return 0 on success, negative on failure |
1885 | **/ | |
1886 | ||
64798845 | 1887 | int e1000_setup_all_rx_resources(struct e1000_adapter *adapter) |
581d708e MC |
1888 | { |
1889 | int i, err = 0; | |
1890 | ||
f56799ea | 1891 | for (i = 0; i < adapter->num_rx_queues; i++) { |
581d708e MC |
1892 | err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
1893 | if (err) { | |
1894 | DPRINTK(PROBE, ERR, | |
1895 | "Allocation for Rx Queue %u failed\n", i); | |
3fbbc72e VA |
1896 | for (i-- ; i >= 0; i--) |
1897 | e1000_free_rx_resources(adapter, | |
1898 | &adapter->rx_ring[i]); | |
581d708e MC |
1899 | break; |
1900 | } | |
1901 | } | |
1902 | ||
1903 | return err; | |
1904 | } | |
1905 | ||
1da177e4 | 1906 | /** |
2648345f | 1907 | * e1000_setup_rctl - configure the receive control registers |
1da177e4 LT |
1908 | * @adapter: Board private structure |
1909 | **/ | |
e4c811c9 MC |
1910 | #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ |
1911 | (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) | |
64798845 | 1912 | static void e1000_setup_rctl(struct e1000_adapter *adapter) |
1da177e4 | 1913 | { |
1dc32918 | 1914 | struct e1000_hw *hw = &adapter->hw; |
630b25cd | 1915 | u32 rctl; |
1da177e4 | 1916 | |
1dc32918 | 1917 | rctl = er32(RCTL); |
1da177e4 LT |
1918 | |
1919 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
1920 | ||
1921 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | | |
1922 | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | | |
1dc32918 | 1923 | (hw->mc_filter_type << E1000_RCTL_MO_SHIFT); |
1da177e4 | 1924 | |
1dc32918 | 1925 | if (hw->tbi_compatibility_on == 1) |
1da177e4 LT |
1926 | rctl |= E1000_RCTL_SBP; |
1927 | else | |
1928 | rctl &= ~E1000_RCTL_SBP; | |
1929 | ||
2d7edb92 MC |
1930 | if (adapter->netdev->mtu <= ETH_DATA_LEN) |
1931 | rctl &= ~E1000_RCTL_LPE; | |
1932 | else | |
1933 | rctl |= E1000_RCTL_LPE; | |
1934 | ||
1da177e4 | 1935 | /* Setup buffer sizes */ |
9e2feace AK |
1936 | rctl &= ~E1000_RCTL_SZ_4096; |
1937 | rctl |= E1000_RCTL_BSEX; | |
1938 | switch (adapter->rx_buffer_len) { | |
1939 | case E1000_RXBUFFER_256: | |
1940 | rctl |= E1000_RCTL_SZ_256; | |
1941 | rctl &= ~E1000_RCTL_BSEX; | |
1942 | break; | |
1943 | case E1000_RXBUFFER_512: | |
1944 | rctl |= E1000_RCTL_SZ_512; | |
1945 | rctl &= ~E1000_RCTL_BSEX; | |
1946 | break; | |
1947 | case E1000_RXBUFFER_1024: | |
1948 | rctl |= E1000_RCTL_SZ_1024; | |
1949 | rctl &= ~E1000_RCTL_BSEX; | |
1950 | break; | |
a1415ee6 JK |
1951 | case E1000_RXBUFFER_2048: |
1952 | default: | |
1953 | rctl |= E1000_RCTL_SZ_2048; | |
1954 | rctl &= ~E1000_RCTL_BSEX; | |
1955 | break; | |
1956 | case E1000_RXBUFFER_4096: | |
1957 | rctl |= E1000_RCTL_SZ_4096; | |
1958 | break; | |
1959 | case E1000_RXBUFFER_8192: | |
1960 | rctl |= E1000_RCTL_SZ_8192; | |
1961 | break; | |
1962 | case E1000_RXBUFFER_16384: | |
1963 | rctl |= E1000_RCTL_SZ_16384; | |
1964 | break; | |
2d7edb92 MC |
1965 | } |
1966 | ||
1dc32918 | 1967 | ew32(RCTL, rctl); |
1da177e4 LT |
1968 | } |
1969 | ||
1970 | /** | |
1971 | * e1000_configure_rx - Configure 8254x Receive Unit after Reset | |
1972 | * @adapter: board private structure | |
1973 | * | |
1974 | * Configure the Rx unit of the MAC after a reset. | |
1975 | **/ | |
1976 | ||
64798845 | 1977 | static void e1000_configure_rx(struct e1000_adapter *adapter) |
1da177e4 | 1978 | { |
406874a7 | 1979 | u64 rdba; |
581d708e | 1980 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 1981 | u32 rdlen, rctl, rxcsum, ctrl_ext; |
2d7edb92 | 1982 | |
630b25cd BJ |
1983 | rdlen = adapter->rx_ring[0].count * |
1984 | sizeof(struct e1000_rx_desc); | |
1985 | adapter->clean_rx = e1000_clean_rx_irq; | |
1986 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers; | |
1da177e4 LT |
1987 | |
1988 | /* disable receives while setting up the descriptors */ | |
1dc32918 JP |
1989 | rctl = er32(RCTL); |
1990 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
1da177e4 LT |
1991 | |
1992 | /* set the Receive Delay Timer Register */ | |
1dc32918 | 1993 | ew32(RDTR, adapter->rx_int_delay); |
1da177e4 | 1994 | |
581d708e | 1995 | if (hw->mac_type >= e1000_82540) { |
1dc32918 | 1996 | ew32(RADV, adapter->rx_abs_int_delay); |
835bb129 | 1997 | if (adapter->itr_setting != 0) |
1dc32918 | 1998 | ew32(ITR, 1000000000 / (adapter->itr * 256)); |
1da177e4 LT |
1999 | } |
2000 | ||
2ae76d98 | 2001 | if (hw->mac_type >= e1000_82571) { |
1dc32918 | 2002 | ctrl_ext = er32(CTRL_EXT); |
1e613fd9 | 2003 | /* Reset delay timers after every interrupt */ |
6fc7a7ec | 2004 | ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR; |
835bb129 | 2005 | /* Auto-Mask interrupts upon ICR access */ |
1e613fd9 | 2006 | ctrl_ext |= E1000_CTRL_EXT_IAME; |
1dc32918 | 2007 | ew32(IAM, 0xffffffff); |
1dc32918 JP |
2008 | ew32(CTRL_EXT, ctrl_ext); |
2009 | E1000_WRITE_FLUSH(); | |
2ae76d98 MC |
2010 | } |
2011 | ||
581d708e MC |
2012 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
2013 | * the Base and Length of the Rx Descriptor Ring */ | |
f56799ea | 2014 | switch (adapter->num_rx_queues) { |
24025e4e MC |
2015 | case 1: |
2016 | default: | |
581d708e | 2017 | rdba = adapter->rx_ring[0].dma; |
1dc32918 JP |
2018 | ew32(RDLEN, rdlen); |
2019 | ew32(RDBAH, (rdba >> 32)); | |
2020 | ew32(RDBAL, (rdba & 0x00000000ffffffffULL)); | |
2021 | ew32(RDT, 0); | |
2022 | ew32(RDH, 0); | |
6a951698 AK |
2023 | adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH); |
2024 | adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT); | |
581d708e | 2025 | break; |
24025e4e MC |
2026 | } |
2027 | ||
1da177e4 | 2028 | /* Enable 82543 Receive Checksum Offload for TCP and UDP */ |
581d708e | 2029 | if (hw->mac_type >= e1000_82543) { |
1dc32918 | 2030 | rxcsum = er32(RXCSUM); |
630b25cd | 2031 | if (adapter->rx_csum) |
2d7edb92 | 2032 | rxcsum |= E1000_RXCSUM_TUOFL; |
630b25cd | 2033 | else |
2d7edb92 | 2034 | /* don't need to clear IPPCSE as it defaults to 0 */ |
630b25cd | 2035 | rxcsum &= ~E1000_RXCSUM_TUOFL; |
1dc32918 | 2036 | ew32(RXCSUM, rxcsum); |
1da177e4 LT |
2037 | } |
2038 | ||
2039 | /* Enable Receives */ | |
1dc32918 | 2040 | ew32(RCTL, rctl); |
1da177e4 LT |
2041 | } |
2042 | ||
2043 | /** | |
581d708e | 2044 | * e1000_free_tx_resources - Free Tx Resources per Queue |
1da177e4 | 2045 | * @adapter: board private structure |
581d708e | 2046 | * @tx_ring: Tx descriptor ring for a specific queue |
1da177e4 LT |
2047 | * |
2048 | * Free all transmit software resources | |
2049 | **/ | |
2050 | ||
64798845 JP |
2051 | static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
2052 | struct e1000_tx_ring *tx_ring) | |
1da177e4 LT |
2053 | { |
2054 | struct pci_dev *pdev = adapter->pdev; | |
2055 | ||
581d708e | 2056 | e1000_clean_tx_ring(adapter, tx_ring); |
1da177e4 | 2057 | |
581d708e MC |
2058 | vfree(tx_ring->buffer_info); |
2059 | tx_ring->buffer_info = NULL; | |
1da177e4 | 2060 | |
581d708e | 2061 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); |
1da177e4 | 2062 | |
581d708e MC |
2063 | tx_ring->desc = NULL; |
2064 | } | |
2065 | ||
2066 | /** | |
2067 | * e1000_free_all_tx_resources - Free Tx Resources for All Queues | |
2068 | * @adapter: board private structure | |
2069 | * | |
2070 | * Free all transmit software resources | |
2071 | **/ | |
2072 | ||
64798845 | 2073 | void e1000_free_all_tx_resources(struct e1000_adapter *adapter) |
581d708e MC |
2074 | { |
2075 | int i; | |
2076 | ||
f56799ea | 2077 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 2078 | e1000_free_tx_resources(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
2079 | } |
2080 | ||
64798845 JP |
2081 | static void e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, |
2082 | struct e1000_buffer *buffer_info) | |
1da177e4 | 2083 | { |
96838a40 | 2084 | if (buffer_info->dma) { |
2648345f MC |
2085 | pci_unmap_page(adapter->pdev, |
2086 | buffer_info->dma, | |
2087 | buffer_info->length, | |
2088 | PCI_DMA_TODEVICE); | |
a9ebadd6 | 2089 | buffer_info->dma = 0; |
1da177e4 | 2090 | } |
a9ebadd6 | 2091 | if (buffer_info->skb) { |
1da177e4 | 2092 | dev_kfree_skb_any(buffer_info->skb); |
a9ebadd6 JB |
2093 | buffer_info->skb = NULL; |
2094 | } | |
2095 | /* buffer_info must be completely set up in the transmit path */ | |
1da177e4 LT |
2096 | } |
2097 | ||
2098 | /** | |
2099 | * e1000_clean_tx_ring - Free Tx Buffers | |
2100 | * @adapter: board private structure | |
581d708e | 2101 | * @tx_ring: ring to be cleaned |
1da177e4 LT |
2102 | **/ |
2103 | ||
64798845 JP |
2104 | static void e1000_clean_tx_ring(struct e1000_adapter *adapter, |
2105 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 2106 | { |
1dc32918 | 2107 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
2108 | struct e1000_buffer *buffer_info; |
2109 | unsigned long size; | |
2110 | unsigned int i; | |
2111 | ||
2112 | /* Free all the Tx ring sk_buffs */ | |
2113 | ||
96838a40 | 2114 | for (i = 0; i < tx_ring->count; i++) { |
1da177e4 LT |
2115 | buffer_info = &tx_ring->buffer_info[i]; |
2116 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); | |
2117 | } | |
2118 | ||
2119 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
2120 | memset(tx_ring->buffer_info, 0, size); | |
2121 | ||
2122 | /* Zero out the descriptor ring */ | |
2123 | ||
2124 | memset(tx_ring->desc, 0, tx_ring->size); | |
2125 | ||
2126 | tx_ring->next_to_use = 0; | |
2127 | tx_ring->next_to_clean = 0; | |
fd803241 | 2128 | tx_ring->last_tx_tso = 0; |
1da177e4 | 2129 | |
1dc32918 JP |
2130 | writel(0, hw->hw_addr + tx_ring->tdh); |
2131 | writel(0, hw->hw_addr + tx_ring->tdt); | |
581d708e MC |
2132 | } |
2133 | ||
2134 | /** | |
2135 | * e1000_clean_all_tx_rings - Free Tx Buffers for all queues | |
2136 | * @adapter: board private structure | |
2137 | **/ | |
2138 | ||
64798845 | 2139 | static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter) |
581d708e MC |
2140 | { |
2141 | int i; | |
2142 | ||
f56799ea | 2143 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 2144 | e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
2145 | } |
2146 | ||
2147 | /** | |
2148 | * e1000_free_rx_resources - Free Rx Resources | |
2149 | * @adapter: board private structure | |
581d708e | 2150 | * @rx_ring: ring to clean the resources from |
1da177e4 LT |
2151 | * |
2152 | * Free all receive software resources | |
2153 | **/ | |
2154 | ||
64798845 JP |
2155 | static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
2156 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 2157 | { |
1da177e4 LT |
2158 | struct pci_dev *pdev = adapter->pdev; |
2159 | ||
581d708e | 2160 | e1000_clean_rx_ring(adapter, rx_ring); |
1da177e4 LT |
2161 | |
2162 | vfree(rx_ring->buffer_info); | |
2163 | rx_ring->buffer_info = NULL; | |
2164 | ||
2165 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
2166 | ||
2167 | rx_ring->desc = NULL; | |
2168 | } | |
2169 | ||
2170 | /** | |
581d708e | 2171 | * e1000_free_all_rx_resources - Free Rx Resources for All Queues |
1da177e4 | 2172 | * @adapter: board private structure |
581d708e MC |
2173 | * |
2174 | * Free all receive software resources | |
2175 | **/ | |
2176 | ||
64798845 | 2177 | void e1000_free_all_rx_resources(struct e1000_adapter *adapter) |
581d708e MC |
2178 | { |
2179 | int i; | |
2180 | ||
f56799ea | 2181 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e MC |
2182 | e1000_free_rx_resources(adapter, &adapter->rx_ring[i]); |
2183 | } | |
2184 | ||
2185 | /** | |
2186 | * e1000_clean_rx_ring - Free Rx Buffers per Queue | |
2187 | * @adapter: board private structure | |
2188 | * @rx_ring: ring to free buffers from | |
1da177e4 LT |
2189 | **/ |
2190 | ||
64798845 JP |
2191 | static void e1000_clean_rx_ring(struct e1000_adapter *adapter, |
2192 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 2193 | { |
1dc32918 | 2194 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
2195 | struct e1000_buffer *buffer_info; |
2196 | struct pci_dev *pdev = adapter->pdev; | |
2197 | unsigned long size; | |
630b25cd | 2198 | unsigned int i; |
1da177e4 LT |
2199 | |
2200 | /* Free all the Rx ring sk_buffs */ | |
96838a40 | 2201 | for (i = 0; i < rx_ring->count; i++) { |
1da177e4 | 2202 | buffer_info = &rx_ring->buffer_info[i]; |
96838a40 | 2203 | if (buffer_info->skb) { |
1da177e4 LT |
2204 | pci_unmap_single(pdev, |
2205 | buffer_info->dma, | |
2206 | buffer_info->length, | |
2207 | PCI_DMA_FROMDEVICE); | |
2208 | ||
2209 | dev_kfree_skb(buffer_info->skb); | |
2210 | buffer_info->skb = NULL; | |
997f5cbd | 2211 | } |
1da177e4 LT |
2212 | } |
2213 | ||
2214 | size = sizeof(struct e1000_buffer) * rx_ring->count; | |
2215 | memset(rx_ring->buffer_info, 0, size); | |
2216 | ||
2217 | /* Zero out the descriptor ring */ | |
2218 | ||
2219 | memset(rx_ring->desc, 0, rx_ring->size); | |
2220 | ||
2221 | rx_ring->next_to_clean = 0; | |
2222 | rx_ring->next_to_use = 0; | |
2223 | ||
1dc32918 JP |
2224 | writel(0, hw->hw_addr + rx_ring->rdh); |
2225 | writel(0, hw->hw_addr + rx_ring->rdt); | |
581d708e MC |
2226 | } |
2227 | ||
2228 | /** | |
2229 | * e1000_clean_all_rx_rings - Free Rx Buffers for all queues | |
2230 | * @adapter: board private structure | |
2231 | **/ | |
2232 | ||
64798845 | 2233 | static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter) |
581d708e MC |
2234 | { |
2235 | int i; | |
2236 | ||
f56799ea | 2237 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e | 2238 | e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]); |
1da177e4 LT |
2239 | } |
2240 | ||
2241 | /* The 82542 2.0 (revision 2) needs to have the receive unit in reset | |
2242 | * and memory write and invalidate disabled for certain operations | |
2243 | */ | |
64798845 | 2244 | static void e1000_enter_82542_rst(struct e1000_adapter *adapter) |
1da177e4 | 2245 | { |
1dc32918 | 2246 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 2247 | struct net_device *netdev = adapter->netdev; |
406874a7 | 2248 | u32 rctl; |
1da177e4 | 2249 | |
1dc32918 | 2250 | e1000_pci_clear_mwi(hw); |
1da177e4 | 2251 | |
1dc32918 | 2252 | rctl = er32(RCTL); |
1da177e4 | 2253 | rctl |= E1000_RCTL_RST; |
1dc32918 JP |
2254 | ew32(RCTL, rctl); |
2255 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
2256 | mdelay(5); |
2257 | ||
96838a40 | 2258 | if (netif_running(netdev)) |
581d708e | 2259 | e1000_clean_all_rx_rings(adapter); |
1da177e4 LT |
2260 | } |
2261 | ||
64798845 | 2262 | static void e1000_leave_82542_rst(struct e1000_adapter *adapter) |
1da177e4 | 2263 | { |
1dc32918 | 2264 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 2265 | struct net_device *netdev = adapter->netdev; |
406874a7 | 2266 | u32 rctl; |
1da177e4 | 2267 | |
1dc32918 | 2268 | rctl = er32(RCTL); |
1da177e4 | 2269 | rctl &= ~E1000_RCTL_RST; |
1dc32918 JP |
2270 | ew32(RCTL, rctl); |
2271 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
2272 | mdelay(5); |
2273 | ||
1dc32918 JP |
2274 | if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE) |
2275 | e1000_pci_set_mwi(hw); | |
1da177e4 | 2276 | |
96838a40 | 2277 | if (netif_running(netdev)) { |
72d64a43 JK |
2278 | /* No need to loop, because 82542 supports only 1 queue */ |
2279 | struct e1000_rx_ring *ring = &adapter->rx_ring[0]; | |
7c4d3367 | 2280 | e1000_configure_rx(adapter); |
72d64a43 | 2281 | adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring)); |
1da177e4 LT |
2282 | } |
2283 | } | |
2284 | ||
2285 | /** | |
2286 | * e1000_set_mac - Change the Ethernet Address of the NIC | |
2287 | * @netdev: network interface device structure | |
2288 | * @p: pointer to an address structure | |
2289 | * | |
2290 | * Returns 0 on success, negative on failure | |
2291 | **/ | |
2292 | ||
64798845 | 2293 | static int e1000_set_mac(struct net_device *netdev, void *p) |
1da177e4 | 2294 | { |
60490fe0 | 2295 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 2296 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
2297 | struct sockaddr *addr = p; |
2298 | ||
96838a40 | 2299 | if (!is_valid_ether_addr(addr->sa_data)) |
1da177e4 LT |
2300 | return -EADDRNOTAVAIL; |
2301 | ||
2302 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2303 | ||
1dc32918 | 2304 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2305 | e1000_enter_82542_rst(adapter); |
2306 | ||
2307 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
1dc32918 | 2308 | memcpy(hw->mac_addr, addr->sa_data, netdev->addr_len); |
1da177e4 | 2309 | |
1dc32918 | 2310 | e1000_rar_set(hw, hw->mac_addr, 0); |
1da177e4 | 2311 | |
868d5309 MC |
2312 | /* With 82571 controllers, LAA may be overwritten (with the default) |
2313 | * due to controller reset from the other port. */ | |
1dc32918 | 2314 | if (hw->mac_type == e1000_82571) { |
868d5309 | 2315 | /* activate the work around */ |
1dc32918 | 2316 | hw->laa_is_present = 1; |
868d5309 | 2317 | |
96838a40 JB |
2318 | /* Hold a copy of the LAA in RAR[14] This is done so that |
2319 | * between the time RAR[0] gets clobbered and the time it | |
2320 | * gets fixed (in e1000_watchdog), the actual LAA is in one | |
868d5309 | 2321 | * of the RARs and no incoming packets directed to this port |
96838a40 | 2322 | * are dropped. Eventaully the LAA will be in RAR[0] and |
868d5309 | 2323 | * RAR[14] */ |
1dc32918 | 2324 | e1000_rar_set(hw, hw->mac_addr, |
868d5309 MC |
2325 | E1000_RAR_ENTRIES - 1); |
2326 | } | |
2327 | ||
1dc32918 | 2328 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2329 | e1000_leave_82542_rst(adapter); |
2330 | ||
2331 | return 0; | |
2332 | } | |
2333 | ||
2334 | /** | |
db0ce50d | 2335 | * e1000_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set |
1da177e4 LT |
2336 | * @netdev: network interface device structure |
2337 | * | |
db0ce50d PM |
2338 | * The set_rx_mode entry point is called whenever the unicast or multicast |
2339 | * address lists or the network interface flags are updated. This routine is | |
2340 | * responsible for configuring the hardware for proper unicast, multicast, | |
1da177e4 LT |
2341 | * promiscuous mode, and all-multi behavior. |
2342 | **/ | |
2343 | ||
64798845 | 2344 | static void e1000_set_rx_mode(struct net_device *netdev) |
1da177e4 | 2345 | { |
60490fe0 | 2346 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 2347 | struct e1000_hw *hw = &adapter->hw; |
db0ce50d PM |
2348 | struct dev_addr_list *uc_ptr; |
2349 | struct dev_addr_list *mc_ptr; | |
406874a7 JP |
2350 | u32 rctl; |
2351 | u32 hash_value; | |
868d5309 | 2352 | int i, rar_entries = E1000_RAR_ENTRIES; |
cd94dd0b AK |
2353 | int mta_reg_count = (hw->mac_type == e1000_ich8lan) ? |
2354 | E1000_NUM_MTA_REGISTERS_ICH8LAN : | |
2355 | E1000_NUM_MTA_REGISTERS; | |
2356 | ||
1dc32918 | 2357 | if (hw->mac_type == e1000_ich8lan) |
cd94dd0b | 2358 | rar_entries = E1000_RAR_ENTRIES_ICH8LAN; |
1da177e4 | 2359 | |
868d5309 | 2360 | /* reserve RAR[14] for LAA over-write work-around */ |
1dc32918 | 2361 | if (hw->mac_type == e1000_82571) |
868d5309 | 2362 | rar_entries--; |
1da177e4 | 2363 | |
2648345f MC |
2364 | /* Check for Promiscuous and All Multicast modes */ |
2365 | ||
1dc32918 | 2366 | rctl = er32(RCTL); |
1da177e4 | 2367 | |
96838a40 | 2368 | if (netdev->flags & IFF_PROMISC) { |
1da177e4 | 2369 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
746b9f02 | 2370 | rctl &= ~E1000_RCTL_VFE; |
1da177e4 | 2371 | } else { |
746b9f02 PM |
2372 | if (netdev->flags & IFF_ALLMULTI) { |
2373 | rctl |= E1000_RCTL_MPE; | |
2374 | } else { | |
2375 | rctl &= ~E1000_RCTL_MPE; | |
2376 | } | |
78ed11a5 | 2377 | if (adapter->hw.mac_type != e1000_ich8lan) |
746b9f02 | 2378 | rctl |= E1000_RCTL_VFE; |
db0ce50d PM |
2379 | } |
2380 | ||
2381 | uc_ptr = NULL; | |
2382 | if (netdev->uc_count > rar_entries - 1) { | |
2383 | rctl |= E1000_RCTL_UPE; | |
2384 | } else if (!(netdev->flags & IFF_PROMISC)) { | |
2385 | rctl &= ~E1000_RCTL_UPE; | |
2386 | uc_ptr = netdev->uc_list; | |
1da177e4 LT |
2387 | } |
2388 | ||
1dc32918 | 2389 | ew32(RCTL, rctl); |
1da177e4 LT |
2390 | |
2391 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2392 | ||
96838a40 | 2393 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2394 | e1000_enter_82542_rst(adapter); |
2395 | ||
db0ce50d PM |
2396 | /* load the first 14 addresses into the exact filters 1-14. Unicast |
2397 | * addresses take precedence to avoid disabling unicast filtering | |
2398 | * when possible. | |
2399 | * | |
1da177e4 LT |
2400 | * RAR 0 is used for the station MAC adddress |
2401 | * if there are not 14 addresses, go ahead and clear the filters | |
868d5309 | 2402 | * -- with 82571 controllers only 0-13 entries are filled here |
1da177e4 LT |
2403 | */ |
2404 | mc_ptr = netdev->mc_list; | |
2405 | ||
96838a40 | 2406 | for (i = 1; i < rar_entries; i++) { |
db0ce50d PM |
2407 | if (uc_ptr) { |
2408 | e1000_rar_set(hw, uc_ptr->da_addr, i); | |
2409 | uc_ptr = uc_ptr->next; | |
2410 | } else if (mc_ptr) { | |
2411 | e1000_rar_set(hw, mc_ptr->da_addr, i); | |
1da177e4 LT |
2412 | mc_ptr = mc_ptr->next; |
2413 | } else { | |
2414 | E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); | |
1dc32918 | 2415 | E1000_WRITE_FLUSH(); |
1da177e4 | 2416 | E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); |
1dc32918 | 2417 | E1000_WRITE_FLUSH(); |
1da177e4 LT |
2418 | } |
2419 | } | |
db0ce50d | 2420 | WARN_ON(uc_ptr != NULL); |
1da177e4 LT |
2421 | |
2422 | /* clear the old settings from the multicast hash table */ | |
2423 | ||
cd94dd0b | 2424 | for (i = 0; i < mta_reg_count; i++) { |
1da177e4 | 2425 | E1000_WRITE_REG_ARRAY(hw, MTA, i, 0); |
1dc32918 | 2426 | E1000_WRITE_FLUSH(); |
4ca213a6 | 2427 | } |
1da177e4 LT |
2428 | |
2429 | /* load any remaining addresses into the hash table */ | |
2430 | ||
96838a40 | 2431 | for (; mc_ptr; mc_ptr = mc_ptr->next) { |
db0ce50d | 2432 | hash_value = e1000_hash_mc_addr(hw, mc_ptr->da_addr); |
1da177e4 LT |
2433 | e1000_mta_set(hw, hash_value); |
2434 | } | |
2435 | ||
96838a40 | 2436 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 | 2437 | e1000_leave_82542_rst(adapter); |
1da177e4 LT |
2438 | } |
2439 | ||
2440 | /* Need to wait a few seconds after link up to get diagnostic information from | |
2441 | * the phy */ | |
2442 | ||
64798845 | 2443 | static void e1000_update_phy_info(unsigned long data) |
1da177e4 | 2444 | { |
e982f17c | 2445 | struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
1dc32918 JP |
2446 | struct e1000_hw *hw = &adapter->hw; |
2447 | e1000_phy_get_info(hw, &adapter->phy_info); | |
1da177e4 LT |
2448 | } |
2449 | ||
2450 | /** | |
2451 | * e1000_82547_tx_fifo_stall - Timer Call-back | |
2452 | * @data: pointer to adapter cast into an unsigned long | |
2453 | **/ | |
2454 | ||
64798845 | 2455 | static void e1000_82547_tx_fifo_stall(unsigned long data) |
1da177e4 | 2456 | { |
e982f17c | 2457 | struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
1dc32918 | 2458 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 2459 | struct net_device *netdev = adapter->netdev; |
406874a7 | 2460 | u32 tctl; |
1da177e4 | 2461 | |
96838a40 | 2462 | if (atomic_read(&adapter->tx_fifo_stall)) { |
1dc32918 JP |
2463 | if ((er32(TDT) == er32(TDH)) && |
2464 | (er32(TDFT) == er32(TDFH)) && | |
2465 | (er32(TDFTS) == er32(TDFHS))) { | |
2466 | tctl = er32(TCTL); | |
2467 | ew32(TCTL, tctl & ~E1000_TCTL_EN); | |
2468 | ew32(TDFT, adapter->tx_head_addr); | |
2469 | ew32(TDFH, adapter->tx_head_addr); | |
2470 | ew32(TDFTS, adapter->tx_head_addr); | |
2471 | ew32(TDFHS, adapter->tx_head_addr); | |
2472 | ew32(TCTL, tctl); | |
2473 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
2474 | |
2475 | adapter->tx_fifo_head = 0; | |
2476 | atomic_set(&adapter->tx_fifo_stall, 0); | |
2477 | netif_wake_queue(netdev); | |
2478 | } else { | |
2479 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); | |
2480 | } | |
2481 | } | |
2482 | } | |
2483 | ||
2484 | /** | |
2485 | * e1000_watchdog - Timer Call-back | |
2486 | * @data: pointer to adapter cast into an unsigned long | |
2487 | **/ | |
64798845 | 2488 | static void e1000_watchdog(unsigned long data) |
1da177e4 | 2489 | { |
e982f17c | 2490 | struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
1dc32918 | 2491 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 2492 | struct net_device *netdev = adapter->netdev; |
545c67c0 | 2493 | struct e1000_tx_ring *txdr = adapter->tx_ring; |
406874a7 JP |
2494 | u32 link, tctl; |
2495 | s32 ret_val; | |
cd94dd0b | 2496 | |
1dc32918 | 2497 | ret_val = e1000_check_for_link(hw); |
cd94dd0b | 2498 | if ((ret_val == E1000_ERR_PHY) && |
1dc32918 JP |
2499 | (hw->phy_type == e1000_phy_igp_3) && |
2500 | (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) { | |
cd94dd0b AK |
2501 | /* See e1000_kumeran_lock_loss_workaround() */ |
2502 | DPRINTK(LINK, INFO, | |
2503 | "Gigabit has been disabled, downgrading speed\n"); | |
2504 | } | |
90fb5135 | 2505 | |
1dc32918 JP |
2506 | if (hw->mac_type == e1000_82573) { |
2507 | e1000_enable_tx_pkt_filtering(hw); | |
2508 | if (adapter->mng_vlan_id != hw->mng_cookie.vlan_id) | |
2d7edb92 | 2509 | e1000_update_mng_vlan(adapter); |
96838a40 | 2510 | } |
1da177e4 | 2511 | |
1dc32918 JP |
2512 | if ((hw->media_type == e1000_media_type_internal_serdes) && |
2513 | !(er32(TXCW) & E1000_TXCW_ANE)) | |
2514 | link = !hw->serdes_link_down; | |
1da177e4 | 2515 | else |
1dc32918 | 2516 | link = er32(STATUS) & E1000_STATUS_LU; |
1da177e4 | 2517 | |
96838a40 JB |
2518 | if (link) { |
2519 | if (!netif_carrier_ok(netdev)) { | |
406874a7 | 2520 | u32 ctrl; |
c3033b01 | 2521 | bool txb2b = true; |
1dc32918 | 2522 | e1000_get_speed_and_duplex(hw, |
1da177e4 LT |
2523 | &adapter->link_speed, |
2524 | &adapter->link_duplex); | |
2525 | ||
1dc32918 | 2526 | ctrl = er32(CTRL); |
9669f53b AK |
2527 | DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s, " |
2528 | "Flow Control: %s\n", | |
2529 | adapter->link_speed, | |
2530 | adapter->link_duplex == FULL_DUPLEX ? | |
2531 | "Full Duplex" : "Half Duplex", | |
2532 | ((ctrl & E1000_CTRL_TFCE) && (ctrl & | |
2533 | E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl & | |
2534 | E1000_CTRL_RFCE) ? "RX" : ((ctrl & | |
2535 | E1000_CTRL_TFCE) ? "TX" : "None" ))); | |
1da177e4 | 2536 | |
7e6c9861 JK |
2537 | /* tweak tx_queue_len according to speed/duplex |
2538 | * and adjust the timeout factor */ | |
66a2b0a3 JK |
2539 | netdev->tx_queue_len = adapter->tx_queue_len; |
2540 | adapter->tx_timeout_factor = 1; | |
7e6c9861 JK |
2541 | switch (adapter->link_speed) { |
2542 | case SPEED_10: | |
c3033b01 | 2543 | txb2b = false; |
7e6c9861 JK |
2544 | netdev->tx_queue_len = 10; |
2545 | adapter->tx_timeout_factor = 8; | |
2546 | break; | |
2547 | case SPEED_100: | |
c3033b01 | 2548 | txb2b = false; |
7e6c9861 JK |
2549 | netdev->tx_queue_len = 100; |
2550 | /* maybe add some timeout factor ? */ | |
2551 | break; | |
2552 | } | |
2553 | ||
1dc32918 JP |
2554 | if ((hw->mac_type == e1000_82571 || |
2555 | hw->mac_type == e1000_82572) && | |
c3033b01 | 2556 | !txb2b) { |
406874a7 | 2557 | u32 tarc0; |
1dc32918 | 2558 | tarc0 = er32(TARC0); |
90fb5135 | 2559 | tarc0 &= ~(1 << 21); |
1dc32918 | 2560 | ew32(TARC0, tarc0); |
7e6c9861 | 2561 | } |
90fb5135 | 2562 | |
7e6c9861 JK |
2563 | /* disable TSO for pcie and 10/100 speeds, to avoid |
2564 | * some hardware issues */ | |
2565 | if (!adapter->tso_force && | |
1dc32918 | 2566 | hw->bus_type == e1000_bus_type_pci_express){ |
66a2b0a3 JK |
2567 | switch (adapter->link_speed) { |
2568 | case SPEED_10: | |
66a2b0a3 | 2569 | case SPEED_100: |
7e6c9861 JK |
2570 | DPRINTK(PROBE,INFO, |
2571 | "10/100 speed: disabling TSO\n"); | |
2572 | netdev->features &= ~NETIF_F_TSO; | |
87ca4e5b | 2573 | netdev->features &= ~NETIF_F_TSO6; |
7e6c9861 JK |
2574 | break; |
2575 | case SPEED_1000: | |
2576 | netdev->features |= NETIF_F_TSO; | |
87ca4e5b | 2577 | netdev->features |= NETIF_F_TSO6; |
7e6c9861 JK |
2578 | break; |
2579 | default: | |
2580 | /* oops */ | |
66a2b0a3 JK |
2581 | break; |
2582 | } | |
2583 | } | |
7e6c9861 JK |
2584 | |
2585 | /* enable transmits in the hardware, need to do this | |
2586 | * after setting TARC0 */ | |
1dc32918 | 2587 | tctl = er32(TCTL); |
7e6c9861 | 2588 | tctl |= E1000_TCTL_EN; |
1dc32918 | 2589 | ew32(TCTL, tctl); |
66a2b0a3 | 2590 | |
1da177e4 LT |
2591 | netif_carrier_on(netdev); |
2592 | netif_wake_queue(netdev); | |
56e1393f | 2593 | mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ)); |
1da177e4 | 2594 | adapter->smartspeed = 0; |
bb8e3311 JG |
2595 | } else { |
2596 | /* make sure the receive unit is started */ | |
1dc32918 JP |
2597 | if (hw->rx_needs_kicking) { |
2598 | u32 rctl = er32(RCTL); | |
2599 | ew32(RCTL, rctl | E1000_RCTL_EN); | |
bb8e3311 | 2600 | } |
1da177e4 LT |
2601 | } |
2602 | } else { | |
96838a40 | 2603 | if (netif_carrier_ok(netdev)) { |
1da177e4 LT |
2604 | adapter->link_speed = 0; |
2605 | adapter->link_duplex = 0; | |
2606 | DPRINTK(LINK, INFO, "NIC Link is Down\n"); | |
2607 | netif_carrier_off(netdev); | |
2608 | netif_stop_queue(netdev); | |
56e1393f | 2609 | mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ)); |
87041639 JK |
2610 | |
2611 | /* 80003ES2LAN workaround-- | |
2612 | * For packet buffer work-around on link down event; | |
2613 | * disable receives in the ISR and | |
2614 | * reset device here in the watchdog | |
2615 | */ | |
1dc32918 | 2616 | if (hw->mac_type == e1000_80003es2lan) |
87041639 JK |
2617 | /* reset device */ |
2618 | schedule_work(&adapter->reset_task); | |
1da177e4 LT |
2619 | } |
2620 | ||
2621 | e1000_smartspeed(adapter); | |
2622 | } | |
2623 | ||
2624 | e1000_update_stats(adapter); | |
2625 | ||
1dc32918 | 2626 | hw->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
1da177e4 | 2627 | adapter->tpt_old = adapter->stats.tpt; |
1dc32918 | 2628 | hw->collision_delta = adapter->stats.colc - adapter->colc_old; |
1da177e4 LT |
2629 | adapter->colc_old = adapter->stats.colc; |
2630 | ||
2631 | adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; | |
2632 | adapter->gorcl_old = adapter->stats.gorcl; | |
2633 | adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; | |
2634 | adapter->gotcl_old = adapter->stats.gotcl; | |
2635 | ||
1dc32918 | 2636 | e1000_update_adaptive(hw); |
1da177e4 | 2637 | |
f56799ea | 2638 | if (!netif_carrier_ok(netdev)) { |
581d708e | 2639 | if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { |
1da177e4 LT |
2640 | /* We've lost link, so the controller stops DMA, |
2641 | * but we've got queued Tx work that's never going | |
2642 | * to get done, so reset controller to flush Tx. | |
2643 | * (Do the reset outside of interrupt context). */ | |
87041639 JK |
2644 | adapter->tx_timeout_count++; |
2645 | schedule_work(&adapter->reset_task); | |
1da177e4 LT |
2646 | } |
2647 | } | |
2648 | ||
1da177e4 | 2649 | /* Cause software interrupt to ensure rx ring is cleaned */ |
1dc32918 | 2650 | ew32(ICS, E1000_ICS_RXDMT0); |
1da177e4 | 2651 | |
2648345f | 2652 | /* Force detection of hung controller every watchdog period */ |
c3033b01 | 2653 | adapter->detect_tx_hung = true; |
1da177e4 | 2654 | |
96838a40 | 2655 | /* With 82571 controllers, LAA may be overwritten due to controller |
868d5309 | 2656 | * reset from the other port. Set the appropriate LAA in RAR[0] */ |
1dc32918 JP |
2657 | if (hw->mac_type == e1000_82571 && hw->laa_is_present) |
2658 | e1000_rar_set(hw, hw->mac_addr, 0); | |
868d5309 | 2659 | |
1da177e4 | 2660 | /* Reset the timer */ |
56e1393f | 2661 | mod_timer(&adapter->watchdog_timer, round_jiffies(jiffies + 2 * HZ)); |
1da177e4 LT |
2662 | } |
2663 | ||
835bb129 JB |
2664 | enum latency_range { |
2665 | lowest_latency = 0, | |
2666 | low_latency = 1, | |
2667 | bulk_latency = 2, | |
2668 | latency_invalid = 255 | |
2669 | }; | |
2670 | ||
2671 | /** | |
2672 | * e1000_update_itr - update the dynamic ITR value based on statistics | |
2673 | * Stores a new ITR value based on packets and byte | |
2674 | * counts during the last interrupt. The advantage of per interrupt | |
2675 | * computation is faster updates and more accurate ITR for the current | |
2676 | * traffic pattern. Constants in this function were computed | |
2677 | * based on theoretical maximum wire speed and thresholds were set based | |
2678 | * on testing data as well as attempting to minimize response time | |
2679 | * while increasing bulk throughput. | |
2680 | * this functionality is controlled by the InterruptThrottleRate module | |
2681 | * parameter (see e1000_param.c) | |
2682 | * @adapter: pointer to adapter | |
2683 | * @itr_setting: current adapter->itr | |
2684 | * @packets: the number of packets during this measurement interval | |
2685 | * @bytes: the number of bytes during this measurement interval | |
2686 | **/ | |
2687 | static unsigned int e1000_update_itr(struct e1000_adapter *adapter, | |
64798845 | 2688 | u16 itr_setting, int packets, int bytes) |
835bb129 JB |
2689 | { |
2690 | unsigned int retval = itr_setting; | |
2691 | struct e1000_hw *hw = &adapter->hw; | |
2692 | ||
2693 | if (unlikely(hw->mac_type < e1000_82540)) | |
2694 | goto update_itr_done; | |
2695 | ||
2696 | if (packets == 0) | |
2697 | goto update_itr_done; | |
2698 | ||
835bb129 JB |
2699 | switch (itr_setting) { |
2700 | case lowest_latency: | |
2b65326e JB |
2701 | /* jumbo frames get bulk treatment*/ |
2702 | if (bytes/packets > 8000) | |
2703 | retval = bulk_latency; | |
2704 | else if ((packets < 5) && (bytes > 512)) | |
835bb129 JB |
2705 | retval = low_latency; |
2706 | break; | |
2707 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
2708 | if (bytes > 10000) { | |
2b65326e JB |
2709 | /* jumbo frames need bulk latency setting */ |
2710 | if (bytes/packets > 8000) | |
2711 | retval = bulk_latency; | |
2712 | else if ((packets < 10) || ((bytes/packets) > 1200)) | |
835bb129 JB |
2713 | retval = bulk_latency; |
2714 | else if ((packets > 35)) | |
2715 | retval = lowest_latency; | |
2b65326e JB |
2716 | } else if (bytes/packets > 2000) |
2717 | retval = bulk_latency; | |
2718 | else if (packets <= 2 && bytes < 512) | |
835bb129 JB |
2719 | retval = lowest_latency; |
2720 | break; | |
2721 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
2722 | if (bytes > 25000) { | |
2723 | if (packets > 35) | |
2724 | retval = low_latency; | |
2b65326e JB |
2725 | } else if (bytes < 6000) { |
2726 | retval = low_latency; | |
835bb129 JB |
2727 | } |
2728 | break; | |
2729 | } | |
2730 | ||
2731 | update_itr_done: | |
2732 | return retval; | |
2733 | } | |
2734 | ||
2735 | static void e1000_set_itr(struct e1000_adapter *adapter) | |
2736 | { | |
2737 | struct e1000_hw *hw = &adapter->hw; | |
406874a7 JP |
2738 | u16 current_itr; |
2739 | u32 new_itr = adapter->itr; | |
835bb129 JB |
2740 | |
2741 | if (unlikely(hw->mac_type < e1000_82540)) | |
2742 | return; | |
2743 | ||
2744 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ | |
2745 | if (unlikely(adapter->link_speed != SPEED_1000)) { | |
2746 | current_itr = 0; | |
2747 | new_itr = 4000; | |
2748 | goto set_itr_now; | |
2749 | } | |
2750 | ||
2751 | adapter->tx_itr = e1000_update_itr(adapter, | |
2752 | adapter->tx_itr, | |
2753 | adapter->total_tx_packets, | |
2754 | adapter->total_tx_bytes); | |
2b65326e JB |
2755 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
2756 | if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) | |
2757 | adapter->tx_itr = low_latency; | |
2758 | ||
835bb129 JB |
2759 | adapter->rx_itr = e1000_update_itr(adapter, |
2760 | adapter->rx_itr, | |
2761 | adapter->total_rx_packets, | |
2762 | adapter->total_rx_bytes); | |
2b65326e JB |
2763 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
2764 | if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) | |
2765 | adapter->rx_itr = low_latency; | |
835bb129 JB |
2766 | |
2767 | current_itr = max(adapter->rx_itr, adapter->tx_itr); | |
2768 | ||
835bb129 JB |
2769 | switch (current_itr) { |
2770 | /* counts and packets in update_itr are dependent on these numbers */ | |
2771 | case lowest_latency: | |
2772 | new_itr = 70000; | |
2773 | break; | |
2774 | case low_latency: | |
2775 | new_itr = 20000; /* aka hwitr = ~200 */ | |
2776 | break; | |
2777 | case bulk_latency: | |
2778 | new_itr = 4000; | |
2779 | break; | |
2780 | default: | |
2781 | break; | |
2782 | } | |
2783 | ||
2784 | set_itr_now: | |
2785 | if (new_itr != adapter->itr) { | |
2786 | /* this attempts to bias the interrupt rate towards Bulk | |
2787 | * by adding intermediate steps when interrupt rate is | |
2788 | * increasing */ | |
2789 | new_itr = new_itr > adapter->itr ? | |
2790 | min(adapter->itr + (new_itr >> 2), new_itr) : | |
2791 | new_itr; | |
2792 | adapter->itr = new_itr; | |
1dc32918 | 2793 | ew32(ITR, 1000000000 / (new_itr * 256)); |
835bb129 JB |
2794 | } |
2795 | ||
2796 | return; | |
2797 | } | |
2798 | ||
1da177e4 LT |
2799 | #define E1000_TX_FLAGS_CSUM 0x00000001 |
2800 | #define E1000_TX_FLAGS_VLAN 0x00000002 | |
2801 | #define E1000_TX_FLAGS_TSO 0x00000004 | |
2d7edb92 | 2802 | #define E1000_TX_FLAGS_IPV4 0x00000008 |
1da177e4 LT |
2803 | #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
2804 | #define E1000_TX_FLAGS_VLAN_SHIFT 16 | |
2805 | ||
64798845 JP |
2806 | static int e1000_tso(struct e1000_adapter *adapter, |
2807 | struct e1000_tx_ring *tx_ring, struct sk_buff *skb) | |
1da177e4 | 2808 | { |
1da177e4 | 2809 | struct e1000_context_desc *context_desc; |
545c67c0 | 2810 | struct e1000_buffer *buffer_info; |
1da177e4 | 2811 | unsigned int i; |
406874a7 JP |
2812 | u32 cmd_length = 0; |
2813 | u16 ipcse = 0, tucse, mss; | |
2814 | u8 ipcss, ipcso, tucss, tucso, hdr_len; | |
1da177e4 LT |
2815 | int err; |
2816 | ||
89114afd | 2817 | if (skb_is_gso(skb)) { |
1da177e4 LT |
2818 | if (skb_header_cloned(skb)) { |
2819 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
2820 | if (err) | |
2821 | return err; | |
2822 | } | |
2823 | ||
ab6a5bb6 | 2824 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
7967168c | 2825 | mss = skb_shinfo(skb)->gso_size; |
60828236 | 2826 | if (skb->protocol == htons(ETH_P_IP)) { |
eddc9ec5 ACM |
2827 | struct iphdr *iph = ip_hdr(skb); |
2828 | iph->tot_len = 0; | |
2829 | iph->check = 0; | |
aa8223c7 ACM |
2830 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
2831 | iph->daddr, 0, | |
2832 | IPPROTO_TCP, | |
2833 | 0); | |
2d7edb92 | 2834 | cmd_length = E1000_TXD_CMD_IP; |
ea2ae17d | 2835 | ipcse = skb_transport_offset(skb) - 1; |
e15fdd03 | 2836 | } else if (skb->protocol == htons(ETH_P_IPV6)) { |
0660e03f | 2837 | ipv6_hdr(skb)->payload_len = 0; |
aa8223c7 | 2838 | tcp_hdr(skb)->check = |
0660e03f ACM |
2839 | ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
2840 | &ipv6_hdr(skb)->daddr, | |
2841 | 0, IPPROTO_TCP, 0); | |
2d7edb92 | 2842 | ipcse = 0; |
2d7edb92 | 2843 | } |
bbe735e4 | 2844 | ipcss = skb_network_offset(skb); |
eddc9ec5 | 2845 | ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; |
ea2ae17d | 2846 | tucss = skb_transport_offset(skb); |
aa8223c7 | 2847 | tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
1da177e4 LT |
2848 | tucse = 0; |
2849 | ||
2850 | cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | | |
2d7edb92 | 2851 | E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
1da177e4 | 2852 | |
581d708e MC |
2853 | i = tx_ring->next_to_use; |
2854 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
545c67c0 | 2855 | buffer_info = &tx_ring->buffer_info[i]; |
1da177e4 LT |
2856 | |
2857 | context_desc->lower_setup.ip_fields.ipcss = ipcss; | |
2858 | context_desc->lower_setup.ip_fields.ipcso = ipcso; | |
2859 | context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); | |
2860 | context_desc->upper_setup.tcp_fields.tucss = tucss; | |
2861 | context_desc->upper_setup.tcp_fields.tucso = tucso; | |
2862 | context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); | |
2863 | context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); | |
2864 | context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; | |
2865 | context_desc->cmd_and_length = cpu_to_le32(cmd_length); | |
2866 | ||
545c67c0 | 2867 | buffer_info->time_stamp = jiffies; |
a9ebadd6 | 2868 | buffer_info->next_to_watch = i; |
545c67c0 | 2869 | |
581d708e MC |
2870 | if (++i == tx_ring->count) i = 0; |
2871 | tx_ring->next_to_use = i; | |
1da177e4 | 2872 | |
c3033b01 | 2873 | return true; |
1da177e4 | 2874 | } |
c3033b01 | 2875 | return false; |
1da177e4 LT |
2876 | } |
2877 | ||
64798845 JP |
2878 | static bool e1000_tx_csum(struct e1000_adapter *adapter, |
2879 | struct e1000_tx_ring *tx_ring, struct sk_buff *skb) | |
1da177e4 LT |
2880 | { |
2881 | struct e1000_context_desc *context_desc; | |
545c67c0 | 2882 | struct e1000_buffer *buffer_info; |
1da177e4 | 2883 | unsigned int i; |
406874a7 | 2884 | u8 css; |
3ed30676 | 2885 | u32 cmd_len = E1000_TXD_CMD_DEXT; |
1da177e4 | 2886 | |
3ed30676 DG |
2887 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
2888 | return false; | |
1da177e4 | 2889 | |
3ed30676 DG |
2890 | switch (skb->protocol) { |
2891 | case __constant_htons(ETH_P_IP): | |
2892 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) | |
2893 | cmd_len |= E1000_TXD_CMD_TCP; | |
2894 | break; | |
2895 | case __constant_htons(ETH_P_IPV6): | |
2896 | /* XXX not handling all IPV6 headers */ | |
2897 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
2898 | cmd_len |= E1000_TXD_CMD_TCP; | |
2899 | break; | |
2900 | default: | |
2901 | if (unlikely(net_ratelimit())) | |
2902 | DPRINTK(DRV, WARNING, | |
2903 | "checksum_partial proto=%x!\n", skb->protocol); | |
2904 | break; | |
2905 | } | |
1da177e4 | 2906 | |
3ed30676 | 2907 | css = skb_transport_offset(skb); |
1da177e4 | 2908 | |
3ed30676 DG |
2909 | i = tx_ring->next_to_use; |
2910 | buffer_info = &tx_ring->buffer_info[i]; | |
2911 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
545c67c0 | 2912 | |
3ed30676 DG |
2913 | context_desc->lower_setup.ip_config = 0; |
2914 | context_desc->upper_setup.tcp_fields.tucss = css; | |
2915 | context_desc->upper_setup.tcp_fields.tucso = | |
2916 | css + skb->csum_offset; | |
2917 | context_desc->upper_setup.tcp_fields.tucse = 0; | |
2918 | context_desc->tcp_seg_setup.data = 0; | |
2919 | context_desc->cmd_and_length = cpu_to_le32(cmd_len); | |
1da177e4 | 2920 | |
3ed30676 DG |
2921 | buffer_info->time_stamp = jiffies; |
2922 | buffer_info->next_to_watch = i; | |
1da177e4 | 2923 | |
3ed30676 DG |
2924 | if (unlikely(++i == tx_ring->count)) i = 0; |
2925 | tx_ring->next_to_use = i; | |
2926 | ||
2927 | return true; | |
1da177e4 LT |
2928 | } |
2929 | ||
2930 | #define E1000_MAX_TXD_PWR 12 | |
2931 | #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) | |
2932 | ||
64798845 JP |
2933 | static int e1000_tx_map(struct e1000_adapter *adapter, |
2934 | struct e1000_tx_ring *tx_ring, | |
2935 | struct sk_buff *skb, unsigned int first, | |
2936 | unsigned int max_per_txd, unsigned int nr_frags, | |
2937 | unsigned int mss) | |
1da177e4 | 2938 | { |
1dc32918 | 2939 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
2940 | struct e1000_buffer *buffer_info; |
2941 | unsigned int len = skb->len; | |
2942 | unsigned int offset = 0, size, count = 0, i; | |
2943 | unsigned int f; | |
2944 | len -= skb->data_len; | |
2945 | ||
2946 | i = tx_ring->next_to_use; | |
2947 | ||
96838a40 | 2948 | while (len) { |
1da177e4 LT |
2949 | buffer_info = &tx_ring->buffer_info[i]; |
2950 | size = min(len, max_per_txd); | |
fd803241 JK |
2951 | /* Workaround for Controller erratum -- |
2952 | * descriptor for non-tso packet in a linear SKB that follows a | |
2953 | * tso gets written back prematurely before the data is fully | |
0f15a8fa | 2954 | * DMA'd to the controller */ |
fd803241 | 2955 | if (!skb->data_len && tx_ring->last_tx_tso && |
89114afd | 2956 | !skb_is_gso(skb)) { |
fd803241 JK |
2957 | tx_ring->last_tx_tso = 0; |
2958 | size -= 4; | |
2959 | } | |
2960 | ||
1da177e4 LT |
2961 | /* Workaround for premature desc write-backs |
2962 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 2963 | if (unlikely(mss && !nr_frags && size == len && size > 8)) |
1da177e4 | 2964 | size -= 4; |
97338bde MC |
2965 | /* work-around for errata 10 and it applies |
2966 | * to all controllers in PCI-X mode | |
2967 | * The fix is to make sure that the first descriptor of a | |
2968 | * packet is smaller than 2048 - 16 - 16 (or 2016) bytes | |
2969 | */ | |
1dc32918 | 2970 | if (unlikely((hw->bus_type == e1000_bus_type_pcix) && |
97338bde MC |
2971 | (size > 2015) && count == 0)) |
2972 | size = 2015; | |
96838a40 | 2973 | |
1da177e4 LT |
2974 | /* Workaround for potential 82544 hang in PCI-X. Avoid |
2975 | * terminating buffers within evenly-aligned dwords. */ | |
96838a40 | 2976 | if (unlikely(adapter->pcix_82544 && |
1da177e4 LT |
2977 | !((unsigned long)(skb->data + offset + size - 1) & 4) && |
2978 | size > 4)) | |
2979 | size -= 4; | |
2980 | ||
2981 | buffer_info->length = size; | |
2982 | buffer_info->dma = | |
2983 | pci_map_single(adapter->pdev, | |
2984 | skb->data + offset, | |
2985 | size, | |
2986 | PCI_DMA_TODEVICE); | |
2987 | buffer_info->time_stamp = jiffies; | |
a9ebadd6 | 2988 | buffer_info->next_to_watch = i; |
1da177e4 LT |
2989 | |
2990 | len -= size; | |
2991 | offset += size; | |
2992 | count++; | |
96838a40 | 2993 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
2994 | } |
2995 | ||
96838a40 | 2996 | for (f = 0; f < nr_frags; f++) { |
1da177e4 LT |
2997 | struct skb_frag_struct *frag; |
2998 | ||
2999 | frag = &skb_shinfo(skb)->frags[f]; | |
3000 | len = frag->size; | |
3001 | offset = frag->page_offset; | |
3002 | ||
96838a40 | 3003 | while (len) { |
1da177e4 LT |
3004 | buffer_info = &tx_ring->buffer_info[i]; |
3005 | size = min(len, max_per_txd); | |
1da177e4 LT |
3006 | /* Workaround for premature desc write-backs |
3007 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 3008 | if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) |
1da177e4 | 3009 | size -= 4; |
1da177e4 LT |
3010 | /* Workaround for potential 82544 hang in PCI-X. |
3011 | * Avoid terminating buffers within evenly-aligned | |
3012 | * dwords. */ | |
96838a40 | 3013 | if (unlikely(adapter->pcix_82544 && |
1da177e4 LT |
3014 | !((unsigned long)(frag->page+offset+size-1) & 4) && |
3015 | size > 4)) | |
3016 | size -= 4; | |
3017 | ||
3018 | buffer_info->length = size; | |
3019 | buffer_info->dma = | |
3020 | pci_map_page(adapter->pdev, | |
3021 | frag->page, | |
3022 | offset, | |
3023 | size, | |
3024 | PCI_DMA_TODEVICE); | |
3025 | buffer_info->time_stamp = jiffies; | |
a9ebadd6 | 3026 | buffer_info->next_to_watch = i; |
1da177e4 LT |
3027 | |
3028 | len -= size; | |
3029 | offset += size; | |
3030 | count++; | |
96838a40 | 3031 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
3032 | } |
3033 | } | |
3034 | ||
3035 | i = (i == 0) ? tx_ring->count - 1 : i - 1; | |
3036 | tx_ring->buffer_info[i].skb = skb; | |
3037 | tx_ring->buffer_info[first].next_to_watch = i; | |
3038 | ||
3039 | return count; | |
3040 | } | |
3041 | ||
64798845 JP |
3042 | static void e1000_tx_queue(struct e1000_adapter *adapter, |
3043 | struct e1000_tx_ring *tx_ring, int tx_flags, | |
3044 | int count) | |
1da177e4 | 3045 | { |
1dc32918 | 3046 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
3047 | struct e1000_tx_desc *tx_desc = NULL; |
3048 | struct e1000_buffer *buffer_info; | |
406874a7 | 3049 | u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; |
1da177e4 LT |
3050 | unsigned int i; |
3051 | ||
96838a40 | 3052 | if (likely(tx_flags & E1000_TX_FLAGS_TSO)) { |
1da177e4 LT |
3053 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
3054 | E1000_TXD_CMD_TSE; | |
2d7edb92 MC |
3055 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
3056 | ||
96838a40 | 3057 | if (likely(tx_flags & E1000_TX_FLAGS_IPV4)) |
2d7edb92 | 3058 | txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
1da177e4 LT |
3059 | } |
3060 | ||
96838a40 | 3061 | if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) { |
1da177e4 LT |
3062 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
3063 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
3064 | } | |
3065 | ||
96838a40 | 3066 | if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { |
1da177e4 LT |
3067 | txd_lower |= E1000_TXD_CMD_VLE; |
3068 | txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); | |
3069 | } | |
3070 | ||
3071 | i = tx_ring->next_to_use; | |
3072 | ||
96838a40 | 3073 | while (count--) { |
1da177e4 LT |
3074 | buffer_info = &tx_ring->buffer_info[i]; |
3075 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
3076 | tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
3077 | tx_desc->lower.data = | |
3078 | cpu_to_le32(txd_lower | buffer_info->length); | |
3079 | tx_desc->upper.data = cpu_to_le32(txd_upper); | |
96838a40 | 3080 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
3081 | } |
3082 | ||
3083 | tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); | |
3084 | ||
3085 | /* Force memory writes to complete before letting h/w | |
3086 | * know there are new descriptors to fetch. (Only | |
3087 | * applicable for weak-ordered memory model archs, | |
3088 | * such as IA-64). */ | |
3089 | wmb(); | |
3090 | ||
3091 | tx_ring->next_to_use = i; | |
1dc32918 | 3092 | writel(i, hw->hw_addr + tx_ring->tdt); |
2ce9047f JB |
3093 | /* we need this if more than one processor can write to our tail |
3094 | * at a time, it syncronizes IO on IA64/Altix systems */ | |
3095 | mmiowb(); | |
1da177e4 LT |
3096 | } |
3097 | ||
3098 | /** | |
3099 | * 82547 workaround to avoid controller hang in half-duplex environment. | |
3100 | * The workaround is to avoid queuing a large packet that would span | |
3101 | * the internal Tx FIFO ring boundary by notifying the stack to resend | |
3102 | * the packet at a later time. This gives the Tx FIFO an opportunity to | |
3103 | * flush all packets. When that occurs, we reset the Tx FIFO pointers | |
3104 | * to the beginning of the Tx FIFO. | |
3105 | **/ | |
3106 | ||
3107 | #define E1000_FIFO_HDR 0x10 | |
3108 | #define E1000_82547_PAD_LEN 0x3E0 | |
3109 | ||
64798845 JP |
3110 | static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
3111 | struct sk_buff *skb) | |
1da177e4 | 3112 | { |
406874a7 JP |
3113 | u32 fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; |
3114 | u32 skb_fifo_len = skb->len + E1000_FIFO_HDR; | |
1da177e4 | 3115 | |
9099cfb9 | 3116 | skb_fifo_len = ALIGN(skb_fifo_len, E1000_FIFO_HDR); |
1da177e4 | 3117 | |
96838a40 | 3118 | if (adapter->link_duplex != HALF_DUPLEX) |
1da177e4 LT |
3119 | goto no_fifo_stall_required; |
3120 | ||
96838a40 | 3121 | if (atomic_read(&adapter->tx_fifo_stall)) |
1da177e4 LT |
3122 | return 1; |
3123 | ||
96838a40 | 3124 | if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { |
1da177e4 LT |
3125 | atomic_set(&adapter->tx_fifo_stall, 1); |
3126 | return 1; | |
3127 | } | |
3128 | ||
3129 | no_fifo_stall_required: | |
3130 | adapter->tx_fifo_head += skb_fifo_len; | |
96838a40 | 3131 | if (adapter->tx_fifo_head >= adapter->tx_fifo_size) |
1da177e4 LT |
3132 | adapter->tx_fifo_head -= adapter->tx_fifo_size; |
3133 | return 0; | |
3134 | } | |
3135 | ||
2d7edb92 | 3136 | #define MINIMUM_DHCP_PACKET_SIZE 282 |
64798845 JP |
3137 | static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter, |
3138 | struct sk_buff *skb) | |
2d7edb92 MC |
3139 | { |
3140 | struct e1000_hw *hw = &adapter->hw; | |
406874a7 | 3141 | u16 length, offset; |
96838a40 | 3142 | if (vlan_tx_tag_present(skb)) { |
1dc32918 JP |
3143 | if (!((vlan_tx_tag_get(skb) == hw->mng_cookie.vlan_id) && |
3144 | ( hw->mng_cookie.status & | |
2d7edb92 MC |
3145 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) ) |
3146 | return 0; | |
3147 | } | |
20a44028 | 3148 | if (skb->len > MINIMUM_DHCP_PACKET_SIZE) { |
e982f17c | 3149 | struct ethhdr *eth = (struct ethhdr *)skb->data; |
96838a40 JB |
3150 | if ((htons(ETH_P_IP) == eth->h_proto)) { |
3151 | const struct iphdr *ip = | |
406874a7 | 3152 | (struct iphdr *)((u8 *)skb->data+14); |
96838a40 JB |
3153 | if (IPPROTO_UDP == ip->protocol) { |
3154 | struct udphdr *udp = | |
406874a7 | 3155 | (struct udphdr *)((u8 *)ip + |
2d7edb92 | 3156 | (ip->ihl << 2)); |
96838a40 | 3157 | if (ntohs(udp->dest) == 67) { |
406874a7 | 3158 | offset = (u8 *)udp + 8 - skb->data; |
2d7edb92 MC |
3159 | length = skb->len - offset; |
3160 | ||
3161 | return e1000_mng_write_dhcp_info(hw, | |
406874a7 | 3162 | (u8 *)udp + 8, |
2d7edb92 MC |
3163 | length); |
3164 | } | |
3165 | } | |
3166 | } | |
3167 | } | |
3168 | return 0; | |
3169 | } | |
3170 | ||
65c7973f JB |
3171 | static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) |
3172 | { | |
3173 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3174 | struct e1000_tx_ring *tx_ring = adapter->tx_ring; | |
3175 | ||
3176 | netif_stop_queue(netdev); | |
3177 | /* Herbert's original patch had: | |
3178 | * smp_mb__after_netif_stop_queue(); | |
3179 | * but since that doesn't exist yet, just open code it. */ | |
3180 | smp_mb(); | |
3181 | ||
3182 | /* We need to check again in a case another CPU has just | |
3183 | * made room available. */ | |
3184 | if (likely(E1000_DESC_UNUSED(tx_ring) < size)) | |
3185 | return -EBUSY; | |
3186 | ||
3187 | /* A reprieve! */ | |
3188 | netif_start_queue(netdev); | |
fcfb1224 | 3189 | ++adapter->restart_queue; |
65c7973f JB |
3190 | return 0; |
3191 | } | |
3192 | ||
3193 | static int e1000_maybe_stop_tx(struct net_device *netdev, | |
3194 | struct e1000_tx_ring *tx_ring, int size) | |
3195 | { | |
3196 | if (likely(E1000_DESC_UNUSED(tx_ring) >= size)) | |
3197 | return 0; | |
3198 | return __e1000_maybe_stop_tx(netdev, size); | |
3199 | } | |
3200 | ||
1da177e4 | 3201 | #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
64798845 | 3202 | static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) |
1da177e4 | 3203 | { |
60490fe0 | 3204 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 3205 | struct e1000_hw *hw = &adapter->hw; |
581d708e | 3206 | struct e1000_tx_ring *tx_ring; |
1da177e4 LT |
3207 | unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; |
3208 | unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; | |
3209 | unsigned int tx_flags = 0; | |
6d1e3aa7 | 3210 | unsigned int len = skb->len - skb->data_len; |
1da177e4 | 3211 | unsigned long flags; |
6d1e3aa7 KK |
3212 | unsigned int nr_frags; |
3213 | unsigned int mss; | |
1da177e4 | 3214 | int count = 0; |
76c224bc | 3215 | int tso; |
1da177e4 | 3216 | unsigned int f; |
1da177e4 | 3217 | |
65c7973f JB |
3218 | /* This goes back to the question of how to logically map a tx queue |
3219 | * to a flow. Right now, performance is impacted slightly negatively | |
3220 | * if using multiple tx queues. If the stack breaks away from a | |
3221 | * single qdisc implementation, we can look at this again. */ | |
581d708e | 3222 | tx_ring = adapter->tx_ring; |
24025e4e | 3223 | |
581d708e | 3224 | if (unlikely(skb->len <= 0)) { |
1da177e4 LT |
3225 | dev_kfree_skb_any(skb); |
3226 | return NETDEV_TX_OK; | |
3227 | } | |
3228 | ||
032fe6e9 JB |
3229 | /* 82571 and newer doesn't need the workaround that limited descriptor |
3230 | * length to 4kB */ | |
1dc32918 | 3231 | if (hw->mac_type >= e1000_82571) |
032fe6e9 JB |
3232 | max_per_txd = 8192; |
3233 | ||
7967168c | 3234 | mss = skb_shinfo(skb)->gso_size; |
76c224bc | 3235 | /* The controller does a simple calculation to |
1da177e4 LT |
3236 | * make sure there is enough room in the FIFO before |
3237 | * initiating the DMA for each buffer. The calc is: | |
3238 | * 4 = ceil(buffer len/mss). To make sure we don't | |
3239 | * overrun the FIFO, adjust the max buffer len if mss | |
3240 | * drops. */ | |
96838a40 | 3241 | if (mss) { |
406874a7 | 3242 | u8 hdr_len; |
1da177e4 LT |
3243 | max_per_txd = min(mss << 2, max_per_txd); |
3244 | max_txd_pwr = fls(max_per_txd) - 1; | |
9a3056da | 3245 | |
90fb5135 AK |
3246 | /* TSO Workaround for 82571/2/3 Controllers -- if skb->data |
3247 | * points to just header, pull a few bytes of payload from | |
3248 | * frags into skb->data */ | |
ab6a5bb6 | 3249 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
6d1e3aa7 | 3250 | if (skb->data_len && hdr_len == len) { |
1dc32918 | 3251 | switch (hw->mac_type) { |
9f687888 | 3252 | unsigned int pull_size; |
683a2aa3 HX |
3253 | case e1000_82544: |
3254 | /* Make sure we have room to chop off 4 bytes, | |
3255 | * and that the end alignment will work out to | |
3256 | * this hardware's requirements | |
3257 | * NOTE: this is a TSO only workaround | |
3258 | * if end byte alignment not correct move us | |
3259 | * into the next dword */ | |
27a884dc | 3260 | if ((unsigned long)(skb_tail_pointer(skb) - 1) & 4) |
683a2aa3 HX |
3261 | break; |
3262 | /* fall through */ | |
9f687888 JK |
3263 | case e1000_82571: |
3264 | case e1000_82572: | |
3265 | case e1000_82573: | |
cd94dd0b | 3266 | case e1000_ich8lan: |
9f687888 JK |
3267 | pull_size = min((unsigned int)4, skb->data_len); |
3268 | if (!__pskb_pull_tail(skb, pull_size)) { | |
a5eafce2 | 3269 | DPRINTK(DRV, ERR, |
9f687888 JK |
3270 | "__pskb_pull_tail failed.\n"); |
3271 | dev_kfree_skb_any(skb); | |
749dfc70 | 3272 | return NETDEV_TX_OK; |
9f687888 JK |
3273 | } |
3274 | len = skb->len - skb->data_len; | |
3275 | break; | |
3276 | default: | |
3277 | /* do nothing */ | |
3278 | break; | |
d74bbd3b | 3279 | } |
9a3056da | 3280 | } |
1da177e4 LT |
3281 | } |
3282 | ||
9a3056da | 3283 | /* reserve a descriptor for the offload context */ |
84fa7933 | 3284 | if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
1da177e4 | 3285 | count++; |
2648345f | 3286 | count++; |
fd803241 | 3287 | |
fd803241 | 3288 | /* Controller Erratum workaround */ |
89114afd | 3289 | if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb)) |
fd803241 | 3290 | count++; |
fd803241 | 3291 | |
1da177e4 LT |
3292 | count += TXD_USE_COUNT(len, max_txd_pwr); |
3293 | ||
96838a40 | 3294 | if (adapter->pcix_82544) |
1da177e4 LT |
3295 | count++; |
3296 | ||
96838a40 | 3297 | /* work-around for errata 10 and it applies to all controllers |
97338bde MC |
3298 | * in PCI-X mode, so add one more descriptor to the count |
3299 | */ | |
1dc32918 | 3300 | if (unlikely((hw->bus_type == e1000_bus_type_pcix) && |
97338bde MC |
3301 | (len > 2015))) |
3302 | count++; | |
3303 | ||
1da177e4 | 3304 | nr_frags = skb_shinfo(skb)->nr_frags; |
96838a40 | 3305 | for (f = 0; f < nr_frags; f++) |
1da177e4 LT |
3306 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, |
3307 | max_txd_pwr); | |
96838a40 | 3308 | if (adapter->pcix_82544) |
1da177e4 LT |
3309 | count += nr_frags; |
3310 | ||
0f15a8fa | 3311 | |
1dc32918 JP |
3312 | if (hw->tx_pkt_filtering && |
3313 | (hw->mac_type == e1000_82573)) | |
2d7edb92 MC |
3314 | e1000_transfer_dhcp_info(adapter, skb); |
3315 | ||
f50393fe | 3316 | if (!spin_trylock_irqsave(&tx_ring->tx_lock, flags)) |
581d708e | 3317 | /* Collision - tell upper layer to requeue */ |
581d708e | 3318 | return NETDEV_TX_LOCKED; |
1da177e4 LT |
3319 | |
3320 | /* need: count + 2 desc gap to keep tail from touching | |
3321 | * head, otherwise try next time */ | |
65c7973f | 3322 | if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2))) { |
581d708e | 3323 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
3324 | return NETDEV_TX_BUSY; |
3325 | } | |
3326 | ||
1dc32918 | 3327 | if (unlikely(hw->mac_type == e1000_82547)) { |
96838a40 | 3328 | if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) { |
1da177e4 | 3329 | netif_stop_queue(netdev); |
1314bbf3 | 3330 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); |
581d708e | 3331 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
3332 | return NETDEV_TX_BUSY; |
3333 | } | |
3334 | } | |
3335 | ||
96838a40 | 3336 | if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) { |
1da177e4 LT |
3337 | tx_flags |= E1000_TX_FLAGS_VLAN; |
3338 | tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); | |
3339 | } | |
3340 | ||
581d708e | 3341 | first = tx_ring->next_to_use; |
96838a40 | 3342 | |
581d708e | 3343 | tso = e1000_tso(adapter, tx_ring, skb); |
1da177e4 LT |
3344 | if (tso < 0) { |
3345 | dev_kfree_skb_any(skb); | |
581d708e | 3346 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
3347 | return NETDEV_TX_OK; |
3348 | } | |
3349 | ||
fd803241 JK |
3350 | if (likely(tso)) { |
3351 | tx_ring->last_tx_tso = 1; | |
1da177e4 | 3352 | tx_flags |= E1000_TX_FLAGS_TSO; |
fd803241 | 3353 | } else if (likely(e1000_tx_csum(adapter, tx_ring, skb))) |
1da177e4 LT |
3354 | tx_flags |= E1000_TX_FLAGS_CSUM; |
3355 | ||
2d7edb92 | 3356 | /* Old method was to assume IPv4 packet by default if TSO was enabled. |
868d5309 | 3357 | * 82571 hardware supports TSO capabilities for IPv6 as well... |
2d7edb92 | 3358 | * no longer assume, we must. */ |
60828236 | 3359 | if (likely(skb->protocol == htons(ETH_P_IP))) |
2d7edb92 MC |
3360 | tx_flags |= E1000_TX_FLAGS_IPV4; |
3361 | ||
581d708e MC |
3362 | e1000_tx_queue(adapter, tx_ring, tx_flags, |
3363 | e1000_tx_map(adapter, tx_ring, skb, first, | |
3364 | max_per_txd, nr_frags, mss)); | |
1da177e4 LT |
3365 | |
3366 | netdev->trans_start = jiffies; | |
3367 | ||
3368 | /* Make sure there is space in the ring for the next send. */ | |
65c7973f | 3369 | e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2); |
1da177e4 | 3370 | |
581d708e | 3371 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
3372 | return NETDEV_TX_OK; |
3373 | } | |
3374 | ||
3375 | /** | |
3376 | * e1000_tx_timeout - Respond to a Tx Hang | |
3377 | * @netdev: network interface device structure | |
3378 | **/ | |
3379 | ||
64798845 | 3380 | static void e1000_tx_timeout(struct net_device *netdev) |
1da177e4 | 3381 | { |
60490fe0 | 3382 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
3383 | |
3384 | /* Do the reset outside of interrupt context */ | |
87041639 JK |
3385 | adapter->tx_timeout_count++; |
3386 | schedule_work(&adapter->reset_task); | |
1da177e4 LT |
3387 | } |
3388 | ||
64798845 | 3389 | static void e1000_reset_task(struct work_struct *work) |
1da177e4 | 3390 | { |
65f27f38 DH |
3391 | struct e1000_adapter *adapter = |
3392 | container_of(work, struct e1000_adapter, reset_task); | |
1da177e4 | 3393 | |
2db10a08 | 3394 | e1000_reinit_locked(adapter); |
1da177e4 LT |
3395 | } |
3396 | ||
3397 | /** | |
3398 | * e1000_get_stats - Get System Network Statistics | |
3399 | * @netdev: network interface device structure | |
3400 | * | |
3401 | * Returns the address of the device statistics structure. | |
3402 | * The statistics are actually updated from the timer callback. | |
3403 | **/ | |
3404 | ||
64798845 | 3405 | static struct net_device_stats *e1000_get_stats(struct net_device *netdev) |
1da177e4 | 3406 | { |
60490fe0 | 3407 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3408 | |
6b7660cd | 3409 | /* only return the current stats */ |
1da177e4 LT |
3410 | return &adapter->net_stats; |
3411 | } | |
3412 | ||
3413 | /** | |
3414 | * e1000_change_mtu - Change the Maximum Transfer Unit | |
3415 | * @netdev: network interface device structure | |
3416 | * @new_mtu: new value for maximum frame size | |
3417 | * | |
3418 | * Returns 0 on success, negative on failure | |
3419 | **/ | |
3420 | ||
64798845 | 3421 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu) |
1da177e4 | 3422 | { |
60490fe0 | 3423 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 3424 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 3425 | int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
406874a7 | 3426 | u16 eeprom_data = 0; |
1da177e4 | 3427 | |
96838a40 JB |
3428 | if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || |
3429 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
3430 | DPRINTK(PROBE, ERR, "Invalid MTU setting\n"); | |
1da177e4 | 3431 | return -EINVAL; |
2d7edb92 | 3432 | } |
1da177e4 | 3433 | |
997f5cbd | 3434 | /* Adapter-specific max frame size limits. */ |
1dc32918 | 3435 | switch (hw->mac_type) { |
9e2feace | 3436 | case e1000_undefined ... e1000_82542_rev2_1: |
cd94dd0b | 3437 | case e1000_ich8lan: |
997f5cbd JK |
3438 | if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) { |
3439 | DPRINTK(PROBE, ERR, "Jumbo Frames not supported.\n"); | |
2d7edb92 | 3440 | return -EINVAL; |
2d7edb92 | 3441 | } |
997f5cbd | 3442 | break; |
85b22eb6 | 3443 | case e1000_82573: |
249d71d6 BA |
3444 | /* Jumbo Frames not supported if: |
3445 | * - this is not an 82573L device | |
3446 | * - ASPM is enabled in any way (0x1A bits 3:2) */ | |
1dc32918 | 3447 | e1000_read_eeprom(hw, EEPROM_INIT_3GIO_3, 1, |
85b22eb6 | 3448 | &eeprom_data); |
1dc32918 | 3449 | if ((hw->device_id != E1000_DEV_ID_82573L) || |
249d71d6 | 3450 | (eeprom_data & EEPROM_WORD1A_ASPM_MASK)) { |
85b22eb6 JK |
3451 | if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) { |
3452 | DPRINTK(PROBE, ERR, | |
3453 | "Jumbo Frames not supported.\n"); | |
3454 | return -EINVAL; | |
3455 | } | |
3456 | break; | |
3457 | } | |
249d71d6 BA |
3458 | /* ERT will be enabled later to enable wire speed receives */ |
3459 | ||
85b22eb6 | 3460 | /* fall through to get support */ |
997f5cbd JK |
3461 | case e1000_82571: |
3462 | case e1000_82572: | |
87041639 | 3463 | case e1000_80003es2lan: |
997f5cbd JK |
3464 | #define MAX_STD_JUMBO_FRAME_SIZE 9234 |
3465 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { | |
3466 | DPRINTK(PROBE, ERR, "MTU > 9216 not supported.\n"); | |
3467 | return -EINVAL; | |
3468 | } | |
3469 | break; | |
3470 | default: | |
3471 | /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */ | |
3472 | break; | |
1da177e4 LT |
3473 | } |
3474 | ||
87f5032e | 3475 | /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
9e2feace AK |
3476 | * means we reserve 2 more, this pushes us to allocate from the next |
3477 | * larger slab size | |
3478 | * i.e. RXBUFFER_2048 --> size-4096 slab */ | |
3479 | ||
3480 | if (max_frame <= E1000_RXBUFFER_256) | |
3481 | adapter->rx_buffer_len = E1000_RXBUFFER_256; | |
3482 | else if (max_frame <= E1000_RXBUFFER_512) | |
3483 | adapter->rx_buffer_len = E1000_RXBUFFER_512; | |
3484 | else if (max_frame <= E1000_RXBUFFER_1024) | |
3485 | adapter->rx_buffer_len = E1000_RXBUFFER_1024; | |
3486 | else if (max_frame <= E1000_RXBUFFER_2048) | |
3487 | adapter->rx_buffer_len = E1000_RXBUFFER_2048; | |
3488 | else if (max_frame <= E1000_RXBUFFER_4096) | |
3489 | adapter->rx_buffer_len = E1000_RXBUFFER_4096; | |
3490 | else if (max_frame <= E1000_RXBUFFER_8192) | |
3491 | adapter->rx_buffer_len = E1000_RXBUFFER_8192; | |
3492 | else if (max_frame <= E1000_RXBUFFER_16384) | |
3493 | adapter->rx_buffer_len = E1000_RXBUFFER_16384; | |
3494 | ||
3495 | /* adjust allocation if LPE protects us, and we aren't using SBP */ | |
1dc32918 | 3496 | if (!hw->tbi_compatibility_on && |
9e2feace AK |
3497 | ((max_frame == MAXIMUM_ETHERNET_FRAME_SIZE) || |
3498 | (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE))) | |
3499 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; | |
997f5cbd | 3500 | |
2d7edb92 | 3501 | netdev->mtu = new_mtu; |
1dc32918 | 3502 | hw->max_frame_size = max_frame; |
2d7edb92 | 3503 | |
2db10a08 AK |
3504 | if (netif_running(netdev)) |
3505 | e1000_reinit_locked(adapter); | |
1da177e4 | 3506 | |
1da177e4 LT |
3507 | return 0; |
3508 | } | |
3509 | ||
3510 | /** | |
3511 | * e1000_update_stats - Update the board statistics counters | |
3512 | * @adapter: board private structure | |
3513 | **/ | |
3514 | ||
64798845 | 3515 | void e1000_update_stats(struct e1000_adapter *adapter) |
1da177e4 LT |
3516 | { |
3517 | struct e1000_hw *hw = &adapter->hw; | |
282f33c9 | 3518 | struct pci_dev *pdev = adapter->pdev; |
1da177e4 | 3519 | unsigned long flags; |
406874a7 | 3520 | u16 phy_tmp; |
1da177e4 LT |
3521 | |
3522 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF | |
3523 | ||
282f33c9 LV |
3524 | /* |
3525 | * Prevent stats update while adapter is being reset, or if the pci | |
3526 | * connection is down. | |
3527 | */ | |
9026729b | 3528 | if (adapter->link_speed == 0) |
282f33c9 | 3529 | return; |
81b1955e | 3530 | if (pci_channel_offline(pdev)) |
9026729b AK |
3531 | return; |
3532 | ||
1da177e4 LT |
3533 | spin_lock_irqsave(&adapter->stats_lock, flags); |
3534 | ||
828d055f | 3535 | /* these counters are modified from e1000_tbi_adjust_stats, |
1da177e4 LT |
3536 | * called from the interrupt context, so they must only |
3537 | * be written while holding adapter->stats_lock | |
3538 | */ | |
3539 | ||
1dc32918 JP |
3540 | adapter->stats.crcerrs += er32(CRCERRS); |
3541 | adapter->stats.gprc += er32(GPRC); | |
3542 | adapter->stats.gorcl += er32(GORCL); | |
3543 | adapter->stats.gorch += er32(GORCH); | |
3544 | adapter->stats.bprc += er32(BPRC); | |
3545 | adapter->stats.mprc += er32(MPRC); | |
3546 | adapter->stats.roc += er32(ROC); | |
3547 | ||
3548 | if (hw->mac_type != e1000_ich8lan) { | |
3549 | adapter->stats.prc64 += er32(PRC64); | |
3550 | adapter->stats.prc127 += er32(PRC127); | |
3551 | adapter->stats.prc255 += er32(PRC255); | |
3552 | adapter->stats.prc511 += er32(PRC511); | |
3553 | adapter->stats.prc1023 += er32(PRC1023); | |
3554 | adapter->stats.prc1522 += er32(PRC1522); | |
3555 | } | |
3556 | ||
3557 | adapter->stats.symerrs += er32(SYMERRS); | |
3558 | adapter->stats.mpc += er32(MPC); | |
3559 | adapter->stats.scc += er32(SCC); | |
3560 | adapter->stats.ecol += er32(ECOL); | |
3561 | adapter->stats.mcc += er32(MCC); | |
3562 | adapter->stats.latecol += er32(LATECOL); | |
3563 | adapter->stats.dc += er32(DC); | |
3564 | adapter->stats.sec += er32(SEC); | |
3565 | adapter->stats.rlec += er32(RLEC); | |
3566 | adapter->stats.xonrxc += er32(XONRXC); | |
3567 | adapter->stats.xontxc += er32(XONTXC); | |
3568 | adapter->stats.xoffrxc += er32(XOFFRXC); | |
3569 | adapter->stats.xofftxc += er32(XOFFTXC); | |
3570 | adapter->stats.fcruc += er32(FCRUC); | |
3571 | adapter->stats.gptc += er32(GPTC); | |
3572 | adapter->stats.gotcl += er32(GOTCL); | |
3573 | adapter->stats.gotch += er32(GOTCH); | |
3574 | adapter->stats.rnbc += er32(RNBC); | |
3575 | adapter->stats.ruc += er32(RUC); | |
3576 | adapter->stats.rfc += er32(RFC); | |
3577 | adapter->stats.rjc += er32(RJC); | |
3578 | adapter->stats.torl += er32(TORL); | |
3579 | adapter->stats.torh += er32(TORH); | |
3580 | adapter->stats.totl += er32(TOTL); | |
3581 | adapter->stats.toth += er32(TOTH); | |
3582 | adapter->stats.tpr += er32(TPR); | |
3583 | ||
3584 | if (hw->mac_type != e1000_ich8lan) { | |
3585 | adapter->stats.ptc64 += er32(PTC64); | |
3586 | adapter->stats.ptc127 += er32(PTC127); | |
3587 | adapter->stats.ptc255 += er32(PTC255); | |
3588 | adapter->stats.ptc511 += er32(PTC511); | |
3589 | adapter->stats.ptc1023 += er32(PTC1023); | |
3590 | adapter->stats.ptc1522 += er32(PTC1522); | |
3591 | } | |
3592 | ||
3593 | adapter->stats.mptc += er32(MPTC); | |
3594 | adapter->stats.bptc += er32(BPTC); | |
1da177e4 LT |
3595 | |
3596 | /* used for adaptive IFS */ | |
3597 | ||
1dc32918 | 3598 | hw->tx_packet_delta = er32(TPT); |
1da177e4 | 3599 | adapter->stats.tpt += hw->tx_packet_delta; |
1dc32918 | 3600 | hw->collision_delta = er32(COLC); |
1da177e4 LT |
3601 | adapter->stats.colc += hw->collision_delta; |
3602 | ||
96838a40 | 3603 | if (hw->mac_type >= e1000_82543) { |
1dc32918 JP |
3604 | adapter->stats.algnerrc += er32(ALGNERRC); |
3605 | adapter->stats.rxerrc += er32(RXERRC); | |
3606 | adapter->stats.tncrs += er32(TNCRS); | |
3607 | adapter->stats.cexterr += er32(CEXTERR); | |
3608 | adapter->stats.tsctc += er32(TSCTC); | |
3609 | adapter->stats.tsctfc += er32(TSCTFC); | |
1da177e4 | 3610 | } |
96838a40 | 3611 | if (hw->mac_type > e1000_82547_rev_2) { |
1dc32918 JP |
3612 | adapter->stats.iac += er32(IAC); |
3613 | adapter->stats.icrxoc += er32(ICRXOC); | |
3614 | ||
3615 | if (hw->mac_type != e1000_ich8lan) { | |
3616 | adapter->stats.icrxptc += er32(ICRXPTC); | |
3617 | adapter->stats.icrxatc += er32(ICRXATC); | |
3618 | adapter->stats.ictxptc += er32(ICTXPTC); | |
3619 | adapter->stats.ictxatc += er32(ICTXATC); | |
3620 | adapter->stats.ictxqec += er32(ICTXQEC); | |
3621 | adapter->stats.ictxqmtc += er32(ICTXQMTC); | |
3622 | adapter->stats.icrxdmtc += er32(ICRXDMTC); | |
cd94dd0b | 3623 | } |
2d7edb92 | 3624 | } |
1da177e4 LT |
3625 | |
3626 | /* Fill out the OS statistics structure */ | |
1da177e4 LT |
3627 | adapter->net_stats.multicast = adapter->stats.mprc; |
3628 | adapter->net_stats.collisions = adapter->stats.colc; | |
3629 | ||
3630 | /* Rx Errors */ | |
3631 | ||
87041639 JK |
3632 | /* RLEC on some newer hardware can be incorrect so build |
3633 | * our own version based on RUC and ROC */ | |
1da177e4 LT |
3634 | adapter->net_stats.rx_errors = adapter->stats.rxerrc + |
3635 | adapter->stats.crcerrs + adapter->stats.algnerrc + | |
87041639 JK |
3636 | adapter->stats.ruc + adapter->stats.roc + |
3637 | adapter->stats.cexterr; | |
49559854 MW |
3638 | adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc; |
3639 | adapter->net_stats.rx_length_errors = adapter->stats.rlerrc; | |
1da177e4 LT |
3640 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; |
3641 | adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; | |
1da177e4 LT |
3642 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; |
3643 | ||
3644 | /* Tx Errors */ | |
49559854 MW |
3645 | adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol; |
3646 | adapter->net_stats.tx_errors = adapter->stats.txerrc; | |
1da177e4 LT |
3647 | adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; |
3648 | adapter->net_stats.tx_window_errors = adapter->stats.latecol; | |
3649 | adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; | |
1dc32918 | 3650 | if (hw->bad_tx_carr_stats_fd && |
167fb284 JG |
3651 | adapter->link_duplex == FULL_DUPLEX) { |
3652 | adapter->net_stats.tx_carrier_errors = 0; | |
3653 | adapter->stats.tncrs = 0; | |
3654 | } | |
1da177e4 LT |
3655 | |
3656 | /* Tx Dropped needs to be maintained elsewhere */ | |
3657 | ||
3658 | /* Phy Stats */ | |
96838a40 JB |
3659 | if (hw->media_type == e1000_media_type_copper) { |
3660 | if ((adapter->link_speed == SPEED_1000) && | |
1da177e4 LT |
3661 | (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
3662 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; | |
3663 | adapter->phy_stats.idle_errors += phy_tmp; | |
3664 | } | |
3665 | ||
96838a40 | 3666 | if ((hw->mac_type <= e1000_82546) && |
1da177e4 LT |
3667 | (hw->phy_type == e1000_phy_m88) && |
3668 | !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) | |
3669 | adapter->phy_stats.receive_errors += phy_tmp; | |
3670 | } | |
3671 | ||
15e376b4 | 3672 | /* Management Stats */ |
1dc32918 JP |
3673 | if (hw->has_smbus) { |
3674 | adapter->stats.mgptc += er32(MGTPTC); | |
3675 | adapter->stats.mgprc += er32(MGTPRC); | |
3676 | adapter->stats.mgpdc += er32(MGTPDC); | |
15e376b4 JG |
3677 | } |
3678 | ||
1da177e4 LT |
3679 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
3680 | } | |
9ac98284 JB |
3681 | |
3682 | /** | |
3683 | * e1000_intr_msi - Interrupt Handler | |
3684 | * @irq: interrupt number | |
3685 | * @data: pointer to a network interface device structure | |
3686 | **/ | |
3687 | ||
64798845 | 3688 | static irqreturn_t e1000_intr_msi(int irq, void *data) |
9ac98284 JB |
3689 | { |
3690 | struct net_device *netdev = data; | |
3691 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3692 | struct e1000_hw *hw = &adapter->hw; | |
1dc32918 | 3693 | u32 icr = er32(ICR); |
9ac98284 | 3694 | |
9150b76a JB |
3695 | /* in NAPI mode read ICR disables interrupts using IAM */ |
3696 | ||
b5fc8f0c JB |
3697 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
3698 | hw->get_link_status = 1; | |
3699 | /* 80003ES2LAN workaround-- For packet buffer work-around on | |
3700 | * link down event; disable receives here in the ISR and reset | |
3701 | * adapter in watchdog */ | |
3702 | if (netif_carrier_ok(netdev) && | |
1dc32918 | 3703 | (hw->mac_type == e1000_80003es2lan)) { |
b5fc8f0c | 3704 | /* disable receives */ |
1dc32918 JP |
3705 | u32 rctl = er32(RCTL); |
3706 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
9ac98284 | 3707 | } |
b5fc8f0c JB |
3708 | /* guard against interrupt when we're going down */ |
3709 | if (!test_bit(__E1000_DOWN, &adapter->flags)) | |
3710 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
9ac98284 JB |
3711 | } |
3712 | ||
bea3348e | 3713 | if (likely(netif_rx_schedule_prep(netdev, &adapter->napi))) { |
835bb129 JB |
3714 | adapter->total_tx_bytes = 0; |
3715 | adapter->total_tx_packets = 0; | |
3716 | adapter->total_rx_bytes = 0; | |
3717 | adapter->total_rx_packets = 0; | |
bea3348e | 3718 | __netif_rx_schedule(netdev, &adapter->napi); |
835bb129 | 3719 | } else |
9ac98284 | 3720 | e1000_irq_enable(adapter); |
9ac98284 JB |
3721 | |
3722 | return IRQ_HANDLED; | |
3723 | } | |
1da177e4 LT |
3724 | |
3725 | /** | |
3726 | * e1000_intr - Interrupt Handler | |
3727 | * @irq: interrupt number | |
3728 | * @data: pointer to a network interface device structure | |
1da177e4 LT |
3729 | **/ |
3730 | ||
64798845 | 3731 | static irqreturn_t e1000_intr(int irq, void *data) |
1da177e4 LT |
3732 | { |
3733 | struct net_device *netdev = data; | |
60490fe0 | 3734 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3735 | struct e1000_hw *hw = &adapter->hw; |
1dc32918 | 3736 | u32 rctl, icr = er32(ICR); |
c3570acb | 3737 | |
835bb129 JB |
3738 | if (unlikely(!icr)) |
3739 | return IRQ_NONE; /* Not our interrupt */ | |
3740 | ||
835bb129 JB |
3741 | /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is |
3742 | * not set, then the adapter didn't send an interrupt */ | |
3743 | if (unlikely(hw->mac_type >= e1000_82571 && | |
3744 | !(icr & E1000_ICR_INT_ASSERTED))) | |
3745 | return IRQ_NONE; | |
3746 | ||
9150b76a JB |
3747 | /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No |
3748 | * need for the IMC write */ | |
1da177e4 | 3749 | |
96838a40 | 3750 | if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { |
1da177e4 | 3751 | hw->get_link_status = 1; |
87041639 JK |
3752 | /* 80003ES2LAN workaround-- |
3753 | * For packet buffer work-around on link down event; | |
3754 | * disable receives here in the ISR and | |
3755 | * reset adapter in watchdog | |
3756 | */ | |
3757 | if (netif_carrier_ok(netdev) && | |
1dc32918 | 3758 | (hw->mac_type == e1000_80003es2lan)) { |
87041639 | 3759 | /* disable receives */ |
1dc32918 JP |
3760 | rctl = er32(RCTL); |
3761 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
87041639 | 3762 | } |
1314bbf3 AK |
3763 | /* guard against interrupt when we're going down */ |
3764 | if (!test_bit(__E1000_DOWN, &adapter->flags)) | |
3765 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1da177e4 LT |
3766 | } |
3767 | ||
1e613fd9 | 3768 | if (unlikely(hw->mac_type < e1000_82571)) { |
835bb129 | 3769 | /* disable interrupts, without the synchronize_irq bit */ |
1dc32918 JP |
3770 | ew32(IMC, ~0); |
3771 | E1000_WRITE_FLUSH(); | |
1e613fd9 | 3772 | } |
bea3348e | 3773 | if (likely(netif_rx_schedule_prep(netdev, &adapter->napi))) { |
835bb129 JB |
3774 | adapter->total_tx_bytes = 0; |
3775 | adapter->total_tx_packets = 0; | |
3776 | adapter->total_rx_bytes = 0; | |
3777 | adapter->total_rx_packets = 0; | |
bea3348e | 3778 | __netif_rx_schedule(netdev, &adapter->napi); |
835bb129 | 3779 | } else |
90fb5135 AK |
3780 | /* this really should not happen! if it does it is basically a |
3781 | * bug, but not a hard error, so enable ints and continue */ | |
581d708e | 3782 | e1000_irq_enable(adapter); |
1da177e4 | 3783 | |
1da177e4 LT |
3784 | return IRQ_HANDLED; |
3785 | } | |
3786 | ||
1da177e4 LT |
3787 | /** |
3788 | * e1000_clean - NAPI Rx polling callback | |
3789 | * @adapter: board private structure | |
3790 | **/ | |
64798845 | 3791 | static int e1000_clean(struct napi_struct *napi, int budget) |
1da177e4 | 3792 | { |
bea3348e SH |
3793 | struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); |
3794 | struct net_device *poll_dev = adapter->netdev; | |
d2c7ddd6 | 3795 | int tx_cleaned = 0, work_done = 0; |
581d708e | 3796 | |
4cf1653a | 3797 | adapter = netdev_priv(poll_dev); |
581d708e | 3798 | |
d3d9e484 AK |
3799 | /* e1000_clean is called per-cpu. This lock protects |
3800 | * tx_ring[0] from being cleaned by multiple cpus | |
3801 | * simultaneously. A failure obtaining the lock means | |
3802 | * tx_ring[0] is currently being cleaned anyway. */ | |
3803 | if (spin_trylock(&adapter->tx_queue_lock)) { | |
d2c7ddd6 DM |
3804 | tx_cleaned = e1000_clean_tx_irq(adapter, |
3805 | &adapter->tx_ring[0]); | |
d3d9e484 | 3806 | spin_unlock(&adapter->tx_queue_lock); |
581d708e MC |
3807 | } |
3808 | ||
d3d9e484 | 3809 | adapter->clean_rx(adapter, &adapter->rx_ring[0], |
bea3348e | 3810 | &work_done, budget); |
96838a40 | 3811 | |
d2c7ddd6 DM |
3812 | if (tx_cleaned) |
3813 | work_done = budget; | |
3814 | ||
53e52c72 DM |
3815 | /* If budget not fully consumed, exit the polling mode */ |
3816 | if (work_done < budget) { | |
835bb129 JB |
3817 | if (likely(adapter->itr_setting & 3)) |
3818 | e1000_set_itr(adapter); | |
bea3348e | 3819 | netif_rx_complete(poll_dev, napi); |
1da177e4 | 3820 | e1000_irq_enable(adapter); |
1da177e4 LT |
3821 | } |
3822 | ||
bea3348e | 3823 | return work_done; |
1da177e4 LT |
3824 | } |
3825 | ||
1da177e4 LT |
3826 | /** |
3827 | * e1000_clean_tx_irq - Reclaim resources after transmit completes | |
3828 | * @adapter: board private structure | |
3829 | **/ | |
64798845 JP |
3830 | static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
3831 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 3832 | { |
1dc32918 | 3833 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
3834 | struct net_device *netdev = adapter->netdev; |
3835 | struct e1000_tx_desc *tx_desc, *eop_desc; | |
3836 | struct e1000_buffer *buffer_info; | |
3837 | unsigned int i, eop; | |
2a1af5d7 | 3838 | unsigned int count = 0; |
c3033b01 | 3839 | bool cleaned = false; |
835bb129 | 3840 | unsigned int total_tx_bytes=0, total_tx_packets=0; |
1da177e4 LT |
3841 | |
3842 | i = tx_ring->next_to_clean; | |
3843 | eop = tx_ring->buffer_info[i].next_to_watch; | |
3844 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
3845 | ||
581d708e | 3846 | while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) { |
c3033b01 | 3847 | for (cleaned = false; !cleaned; ) { |
1da177e4 LT |
3848 | tx_desc = E1000_TX_DESC(*tx_ring, i); |
3849 | buffer_info = &tx_ring->buffer_info[i]; | |
3850 | cleaned = (i == eop); | |
3851 | ||
835bb129 | 3852 | if (cleaned) { |
2b65326e | 3853 | struct sk_buff *skb = buffer_info->skb; |
7753b171 JB |
3854 | unsigned int segs, bytecount; |
3855 | segs = skb_shinfo(skb)->gso_segs ?: 1; | |
3856 | /* multiply data chunks by size of headers */ | |
3857 | bytecount = ((segs - 1) * skb_headlen(skb)) + | |
3858 | skb->len; | |
2b65326e | 3859 | total_tx_packets += segs; |
7753b171 | 3860 | total_tx_bytes += bytecount; |
835bb129 | 3861 | } |
fd803241 | 3862 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
a9ebadd6 | 3863 | tx_desc->upper.data = 0; |
1da177e4 | 3864 | |
96838a40 | 3865 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 | 3866 | } |
581d708e | 3867 | |
1da177e4 LT |
3868 | eop = tx_ring->buffer_info[i].next_to_watch; |
3869 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
2a1af5d7 JK |
3870 | #define E1000_TX_WEIGHT 64 |
3871 | /* weight of a sort for tx, to avoid endless transmit cleanup */ | |
c3570acb FR |
3872 | if (count++ == E1000_TX_WEIGHT) |
3873 | break; | |
1da177e4 LT |
3874 | } |
3875 | ||
3876 | tx_ring->next_to_clean = i; | |
3877 | ||
77b2aad5 | 3878 | #define TX_WAKE_THRESHOLD 32 |
65c7973f JB |
3879 | if (unlikely(cleaned && netif_carrier_ok(netdev) && |
3880 | E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) { | |
3881 | /* Make sure that anybody stopping the queue after this | |
3882 | * sees the new next_to_clean. | |
3883 | */ | |
3884 | smp_mb(); | |
fcfb1224 | 3885 | if (netif_queue_stopped(netdev)) { |
77b2aad5 | 3886 | netif_wake_queue(netdev); |
fcfb1224 JB |
3887 | ++adapter->restart_queue; |
3888 | } | |
77b2aad5 | 3889 | } |
2648345f | 3890 | |
581d708e | 3891 | if (adapter->detect_tx_hung) { |
2648345f | 3892 | /* Detect a transmit hang in hardware, this serializes the |
1da177e4 | 3893 | * check with the clearing of time_stamp and movement of i */ |
c3033b01 | 3894 | adapter->detect_tx_hung = false; |
392137fa JK |
3895 | if (tx_ring->buffer_info[eop].dma && |
3896 | time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + | |
7e6c9861 | 3897 | (adapter->tx_timeout_factor * HZ)) |
1dc32918 | 3898 | && !(er32(STATUS) & E1000_STATUS_TXOFF)) { |
70b8f1e1 MC |
3899 | |
3900 | /* detected Tx unit hang */ | |
c6963ef5 | 3901 | DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" |
7bfa4816 | 3902 | " Tx Queue <%lu>\n" |
70b8f1e1 MC |
3903 | " TDH <%x>\n" |
3904 | " TDT <%x>\n" | |
3905 | " next_to_use <%x>\n" | |
3906 | " next_to_clean <%x>\n" | |
3907 | "buffer_info[next_to_clean]\n" | |
70b8f1e1 MC |
3908 | " time_stamp <%lx>\n" |
3909 | " next_to_watch <%x>\n" | |
3910 | " jiffies <%lx>\n" | |
3911 | " next_to_watch.status <%x>\n", | |
7bfa4816 JK |
3912 | (unsigned long)((tx_ring - adapter->tx_ring) / |
3913 | sizeof(struct e1000_tx_ring)), | |
1dc32918 JP |
3914 | readl(hw->hw_addr + tx_ring->tdh), |
3915 | readl(hw->hw_addr + tx_ring->tdt), | |
70b8f1e1 | 3916 | tx_ring->next_to_use, |
392137fa JK |
3917 | tx_ring->next_to_clean, |
3918 | tx_ring->buffer_info[eop].time_stamp, | |
70b8f1e1 MC |
3919 | eop, |
3920 | jiffies, | |
3921 | eop_desc->upper.fields.status); | |
1da177e4 | 3922 | netif_stop_queue(netdev); |
70b8f1e1 | 3923 | } |
1da177e4 | 3924 | } |
835bb129 JB |
3925 | adapter->total_tx_bytes += total_tx_bytes; |
3926 | adapter->total_tx_packets += total_tx_packets; | |
ef90e4ec AK |
3927 | adapter->net_stats.tx_bytes += total_tx_bytes; |
3928 | adapter->net_stats.tx_packets += total_tx_packets; | |
1da177e4 LT |
3929 | return cleaned; |
3930 | } | |
3931 | ||
3932 | /** | |
3933 | * e1000_rx_checksum - Receive Checksum Offload for 82543 | |
2d7edb92 MC |
3934 | * @adapter: board private structure |
3935 | * @status_err: receive descriptor status and error fields | |
3936 | * @csum: receive descriptor csum field | |
3937 | * @sk_buff: socket buffer with received data | |
1da177e4 LT |
3938 | **/ |
3939 | ||
64798845 JP |
3940 | static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, |
3941 | u32 csum, struct sk_buff *skb) | |
1da177e4 | 3942 | { |
1dc32918 | 3943 | struct e1000_hw *hw = &adapter->hw; |
406874a7 JP |
3944 | u16 status = (u16)status_err; |
3945 | u8 errors = (u8)(status_err >> 24); | |
2d7edb92 MC |
3946 | skb->ip_summed = CHECKSUM_NONE; |
3947 | ||
1da177e4 | 3948 | /* 82543 or newer only */ |
1dc32918 | 3949 | if (unlikely(hw->mac_type < e1000_82543)) return; |
1da177e4 | 3950 | /* Ignore Checksum bit is set */ |
96838a40 | 3951 | if (unlikely(status & E1000_RXD_STAT_IXSM)) return; |
2d7edb92 | 3952 | /* TCP/UDP checksum error bit is set */ |
96838a40 | 3953 | if (unlikely(errors & E1000_RXD_ERR_TCPE)) { |
1da177e4 | 3954 | /* let the stack verify checksum errors */ |
1da177e4 | 3955 | adapter->hw_csum_err++; |
2d7edb92 MC |
3956 | return; |
3957 | } | |
3958 | /* TCP/UDP Checksum has not been calculated */ | |
1dc32918 | 3959 | if (hw->mac_type <= e1000_82547_rev_2) { |
96838a40 | 3960 | if (!(status & E1000_RXD_STAT_TCPCS)) |
2d7edb92 | 3961 | return; |
1da177e4 | 3962 | } else { |
96838a40 | 3963 | if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) |
2d7edb92 MC |
3964 | return; |
3965 | } | |
3966 | /* It must be a TCP or UDP packet with a valid checksum */ | |
3967 | if (likely(status & E1000_RXD_STAT_TCPCS)) { | |
1da177e4 LT |
3968 | /* TCP checksum is good */ |
3969 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1dc32918 | 3970 | } else if (hw->mac_type > e1000_82547_rev_2) { |
2d7edb92 MC |
3971 | /* IP fragment with UDP payload */ |
3972 | /* Hardware complements the payload checksum, so we undo it | |
3973 | * and then put the value in host order for further stack use. | |
3974 | */ | |
3e18826c AV |
3975 | __sum16 sum = (__force __sum16)htons(csum); |
3976 | skb->csum = csum_unfold(~sum); | |
84fa7933 | 3977 | skb->ip_summed = CHECKSUM_COMPLETE; |
1da177e4 | 3978 | } |
2d7edb92 | 3979 | adapter->hw_csum_good++; |
1da177e4 LT |
3980 | } |
3981 | ||
3982 | /** | |
2d7edb92 | 3983 | * e1000_clean_rx_irq - Send received data up the network stack; legacy |
1da177e4 LT |
3984 | * @adapter: board private structure |
3985 | **/ | |
64798845 JP |
3986 | static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
3987 | struct e1000_rx_ring *rx_ring, | |
3988 | int *work_done, int work_to_do) | |
1da177e4 | 3989 | { |
1dc32918 | 3990 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
3991 | struct net_device *netdev = adapter->netdev; |
3992 | struct pci_dev *pdev = adapter->pdev; | |
86c3d59f JB |
3993 | struct e1000_rx_desc *rx_desc, *next_rxd; |
3994 | struct e1000_buffer *buffer_info, *next_buffer; | |
1da177e4 | 3995 | unsigned long flags; |
406874a7 JP |
3996 | u32 length; |
3997 | u8 last_byte; | |
1da177e4 | 3998 | unsigned int i; |
72d64a43 | 3999 | int cleaned_count = 0; |
c3033b01 | 4000 | bool cleaned = false; |
835bb129 | 4001 | unsigned int total_rx_bytes=0, total_rx_packets=0; |
1da177e4 LT |
4002 | |
4003 | i = rx_ring->next_to_clean; | |
4004 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
b92ff8ee | 4005 | buffer_info = &rx_ring->buffer_info[i]; |
1da177e4 | 4006 | |
b92ff8ee | 4007 | while (rx_desc->status & E1000_RXD_STAT_DD) { |
24f476ee | 4008 | struct sk_buff *skb; |
a292ca6e | 4009 | u8 status; |
90fb5135 | 4010 | |
96838a40 | 4011 | if (*work_done >= work_to_do) |
1da177e4 LT |
4012 | break; |
4013 | (*work_done)++; | |
c3570acb | 4014 | |
a292ca6e | 4015 | status = rx_desc->status; |
b92ff8ee | 4016 | skb = buffer_info->skb; |
86c3d59f JB |
4017 | buffer_info->skb = NULL; |
4018 | ||
30320be8 JK |
4019 | prefetch(skb->data - NET_IP_ALIGN); |
4020 | ||
86c3d59f JB |
4021 | if (++i == rx_ring->count) i = 0; |
4022 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
30320be8 JK |
4023 | prefetch(next_rxd); |
4024 | ||
86c3d59f | 4025 | next_buffer = &rx_ring->buffer_info[i]; |
86c3d59f | 4026 | |
c3033b01 | 4027 | cleaned = true; |
72d64a43 | 4028 | cleaned_count++; |
a292ca6e JK |
4029 | pci_unmap_single(pdev, |
4030 | buffer_info->dma, | |
4031 | buffer_info->length, | |
1da177e4 LT |
4032 | PCI_DMA_FROMDEVICE); |
4033 | ||
1da177e4 LT |
4034 | length = le16_to_cpu(rx_desc->length); |
4035 | ||
a1415ee6 JK |
4036 | if (unlikely(!(status & E1000_RXD_STAT_EOP))) { |
4037 | /* All receives must fit into a single buffer */ | |
4038 | E1000_DBG("%s: Receive packet consumed multiple" | |
4039 | " buffers\n", netdev->name); | |
864c4e45 | 4040 | /* recycle */ |
8fc897b0 | 4041 | buffer_info->skb = skb; |
1da177e4 LT |
4042 | goto next_desc; |
4043 | } | |
4044 | ||
96838a40 | 4045 | if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { |
1da177e4 | 4046 | last_byte = *(skb->data + length - 1); |
1dc32918 JP |
4047 | if (TBI_ACCEPT(hw, status, rx_desc->errors, length, |
4048 | last_byte)) { | |
1da177e4 | 4049 | spin_lock_irqsave(&adapter->stats_lock, flags); |
1dc32918 | 4050 | e1000_tbi_adjust_stats(hw, &adapter->stats, |
1da177e4 LT |
4051 | length, skb->data); |
4052 | spin_unlock_irqrestore(&adapter->stats_lock, | |
4053 | flags); | |
4054 | length--; | |
4055 | } else { | |
9e2feace AK |
4056 | /* recycle */ |
4057 | buffer_info->skb = skb; | |
1da177e4 LT |
4058 | goto next_desc; |
4059 | } | |
1cb5821f | 4060 | } |
1da177e4 | 4061 | |
d2a1e213 JB |
4062 | /* adjust length to remove Ethernet CRC, this must be |
4063 | * done after the TBI_ACCEPT workaround above */ | |
4064 | length -= 4; | |
4065 | ||
835bb129 JB |
4066 | /* probably a little skewed due to removing CRC */ |
4067 | total_rx_bytes += length; | |
4068 | total_rx_packets++; | |
4069 | ||
a292ca6e JK |
4070 | /* code added for copybreak, this should improve |
4071 | * performance for small packets with large amounts | |
4072 | * of reassembly being done in the stack */ | |
1f753861 | 4073 | if (length < copybreak) { |
a292ca6e | 4074 | struct sk_buff *new_skb = |
87f5032e | 4075 | netdev_alloc_skb(netdev, length + NET_IP_ALIGN); |
a292ca6e JK |
4076 | if (new_skb) { |
4077 | skb_reserve(new_skb, NET_IP_ALIGN); | |
27d7ff46 ACM |
4078 | skb_copy_to_linear_data_offset(new_skb, |
4079 | -NET_IP_ALIGN, | |
4080 | (skb->data - | |
4081 | NET_IP_ALIGN), | |
4082 | (length + | |
4083 | NET_IP_ALIGN)); | |
a292ca6e JK |
4084 | /* save the skb in buffer_info as good */ |
4085 | buffer_info->skb = skb; | |
4086 | skb = new_skb; | |
a292ca6e | 4087 | } |
996695de AK |
4088 | /* else just continue with the old one */ |
4089 | } | |
a292ca6e | 4090 | /* end copybreak code */ |
996695de | 4091 | skb_put(skb, length); |
1da177e4 LT |
4092 | |
4093 | /* Receive Checksum Offload */ | |
a292ca6e | 4094 | e1000_rx_checksum(adapter, |
406874a7 JP |
4095 | (u32)(status) | |
4096 | ((u32)(rx_desc->errors) << 24), | |
c3d7a3a4 | 4097 | le16_to_cpu(rx_desc->csum), skb); |
96838a40 | 4098 | |
1da177e4 | 4099 | skb->protocol = eth_type_trans(skb, netdev); |
c3570acb | 4100 | |
96838a40 | 4101 | if (unlikely(adapter->vlgrp && |
a292ca6e | 4102 | (status & E1000_RXD_STAT_VP))) { |
1da177e4 | 4103 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
38b22195 | 4104 | le16_to_cpu(rx_desc->special)); |
1da177e4 LT |
4105 | } else { |
4106 | netif_receive_skb(skb); | |
4107 | } | |
c3570acb | 4108 | |
1da177e4 LT |
4109 | next_desc: |
4110 | rx_desc->status = 0; | |
1da177e4 | 4111 | |
72d64a43 JK |
4112 | /* return some buffers to hardware, one at a time is too slow */ |
4113 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
4114 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
4115 | cleaned_count = 0; | |
4116 | } | |
4117 | ||
30320be8 | 4118 | /* use prefetched values */ |
86c3d59f JB |
4119 | rx_desc = next_rxd; |
4120 | buffer_info = next_buffer; | |
1da177e4 | 4121 | } |
1da177e4 | 4122 | rx_ring->next_to_clean = i; |
72d64a43 JK |
4123 | |
4124 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
4125 | if (cleaned_count) | |
4126 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
2d7edb92 | 4127 | |
835bb129 JB |
4128 | adapter->total_rx_packets += total_rx_packets; |
4129 | adapter->total_rx_bytes += total_rx_bytes; | |
ef90e4ec AK |
4130 | adapter->net_stats.rx_bytes += total_rx_bytes; |
4131 | adapter->net_stats.rx_packets += total_rx_packets; | |
2d7edb92 MC |
4132 | return cleaned; |
4133 | } | |
4134 | ||
1da177e4 | 4135 | /** |
2d7edb92 | 4136 | * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
1da177e4 LT |
4137 | * @adapter: address of board private structure |
4138 | **/ | |
4139 | ||
64798845 JP |
4140 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
4141 | struct e1000_rx_ring *rx_ring, | |
4142 | int cleaned_count) | |
1da177e4 | 4143 | { |
1dc32918 | 4144 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
4145 | struct net_device *netdev = adapter->netdev; |
4146 | struct pci_dev *pdev = adapter->pdev; | |
4147 | struct e1000_rx_desc *rx_desc; | |
4148 | struct e1000_buffer *buffer_info; | |
4149 | struct sk_buff *skb; | |
2648345f MC |
4150 | unsigned int i; |
4151 | unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN; | |
1da177e4 LT |
4152 | |
4153 | i = rx_ring->next_to_use; | |
4154 | buffer_info = &rx_ring->buffer_info[i]; | |
4155 | ||
a292ca6e | 4156 | while (cleaned_count--) { |
ca6f7224 CH |
4157 | skb = buffer_info->skb; |
4158 | if (skb) { | |
a292ca6e JK |
4159 | skb_trim(skb, 0); |
4160 | goto map_skb; | |
4161 | } | |
4162 | ||
ca6f7224 | 4163 | skb = netdev_alloc_skb(netdev, bufsz); |
96838a40 | 4164 | if (unlikely(!skb)) { |
1da177e4 | 4165 | /* Better luck next round */ |
72d64a43 | 4166 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
4167 | break; |
4168 | } | |
4169 | ||
2648345f | 4170 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
4171 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
4172 | struct sk_buff *oldskb = skb; | |
2648345f MC |
4173 | DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes " |
4174 | "at %p\n", bufsz, skb->data); | |
4175 | /* Try again, without freeing the previous */ | |
87f5032e | 4176 | skb = netdev_alloc_skb(netdev, bufsz); |
2648345f | 4177 | /* Failed allocation, critical failure */ |
1da177e4 LT |
4178 | if (!skb) { |
4179 | dev_kfree_skb(oldskb); | |
4180 | break; | |
4181 | } | |
2648345f | 4182 | |
1da177e4 LT |
4183 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
4184 | /* give up */ | |
4185 | dev_kfree_skb(skb); | |
4186 | dev_kfree_skb(oldskb); | |
4187 | break; /* while !buffer_info->skb */ | |
1da177e4 | 4188 | } |
ca6f7224 CH |
4189 | |
4190 | /* Use new allocation */ | |
4191 | dev_kfree_skb(oldskb); | |
1da177e4 | 4192 | } |
1da177e4 LT |
4193 | /* Make buffer alignment 2 beyond a 16 byte boundary |
4194 | * this will result in a 16 byte aligned IP header after | |
4195 | * the 14 byte MAC header is removed | |
4196 | */ | |
4197 | skb_reserve(skb, NET_IP_ALIGN); | |
4198 | ||
1da177e4 LT |
4199 | buffer_info->skb = skb; |
4200 | buffer_info->length = adapter->rx_buffer_len; | |
a292ca6e | 4201 | map_skb: |
1da177e4 LT |
4202 | buffer_info->dma = pci_map_single(pdev, |
4203 | skb->data, | |
4204 | adapter->rx_buffer_len, | |
4205 | PCI_DMA_FROMDEVICE); | |
4206 | ||
2648345f MC |
4207 | /* Fix for errata 23, can't cross 64kB boundary */ |
4208 | if (!e1000_check_64k_bound(adapter, | |
4209 | (void *)(unsigned long)buffer_info->dma, | |
4210 | adapter->rx_buffer_len)) { | |
4211 | DPRINTK(RX_ERR, ERR, | |
4212 | "dma align check failed: %u bytes at %p\n", | |
4213 | adapter->rx_buffer_len, | |
4214 | (void *)(unsigned long)buffer_info->dma); | |
1da177e4 LT |
4215 | dev_kfree_skb(skb); |
4216 | buffer_info->skb = NULL; | |
4217 | ||
2648345f | 4218 | pci_unmap_single(pdev, buffer_info->dma, |
1da177e4 LT |
4219 | adapter->rx_buffer_len, |
4220 | PCI_DMA_FROMDEVICE); | |
4221 | ||
4222 | break; /* while !buffer_info->skb */ | |
4223 | } | |
1da177e4 LT |
4224 | rx_desc = E1000_RX_DESC(*rx_ring, i); |
4225 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
4226 | ||
96838a40 JB |
4227 | if (unlikely(++i == rx_ring->count)) |
4228 | i = 0; | |
1da177e4 LT |
4229 | buffer_info = &rx_ring->buffer_info[i]; |
4230 | } | |
4231 | ||
b92ff8ee JB |
4232 | if (likely(rx_ring->next_to_use != i)) { |
4233 | rx_ring->next_to_use = i; | |
4234 | if (unlikely(i-- == 0)) | |
4235 | i = (rx_ring->count - 1); | |
4236 | ||
4237 | /* Force memory writes to complete before letting h/w | |
4238 | * know there are new descriptors to fetch. (Only | |
4239 | * applicable for weak-ordered memory model archs, | |
4240 | * such as IA-64). */ | |
4241 | wmb(); | |
1dc32918 | 4242 | writel(i, hw->hw_addr + rx_ring->rdt); |
b92ff8ee | 4243 | } |
1da177e4 LT |
4244 | } |
4245 | ||
4246 | /** | |
4247 | * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. | |
4248 | * @adapter: | |
4249 | **/ | |
4250 | ||
64798845 | 4251 | static void e1000_smartspeed(struct e1000_adapter *adapter) |
1da177e4 | 4252 | { |
1dc32918 | 4253 | struct e1000_hw *hw = &adapter->hw; |
406874a7 JP |
4254 | u16 phy_status; |
4255 | u16 phy_ctrl; | |
1da177e4 | 4256 | |
1dc32918 JP |
4257 | if ((hw->phy_type != e1000_phy_igp) || !hw->autoneg || |
4258 | !(hw->autoneg_advertised & ADVERTISE_1000_FULL)) | |
1da177e4 LT |
4259 | return; |
4260 | ||
96838a40 | 4261 | if (adapter->smartspeed == 0) { |
1da177e4 LT |
4262 | /* If Master/Slave config fault is asserted twice, |
4263 | * we assume back-to-back */ | |
1dc32918 | 4264 | e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); |
96838a40 | 4265 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1dc32918 | 4266 | e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); |
96838a40 | 4267 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1dc32918 | 4268 | e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl); |
96838a40 | 4269 | if (phy_ctrl & CR_1000T_MS_ENABLE) { |
1da177e4 | 4270 | phy_ctrl &= ~CR_1000T_MS_ENABLE; |
1dc32918 | 4271 | e1000_write_phy_reg(hw, PHY_1000T_CTRL, |
1da177e4 LT |
4272 | phy_ctrl); |
4273 | adapter->smartspeed++; | |
1dc32918 JP |
4274 | if (!e1000_phy_setup_autoneg(hw) && |
4275 | !e1000_read_phy_reg(hw, PHY_CTRL, | |
1da177e4 LT |
4276 | &phy_ctrl)) { |
4277 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
4278 | MII_CR_RESTART_AUTO_NEG); | |
1dc32918 | 4279 | e1000_write_phy_reg(hw, PHY_CTRL, |
1da177e4 LT |
4280 | phy_ctrl); |
4281 | } | |
4282 | } | |
4283 | return; | |
96838a40 | 4284 | } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { |
1da177e4 | 4285 | /* If still no link, perhaps using 2/3 pair cable */ |
1dc32918 | 4286 | e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl); |
1da177e4 | 4287 | phy_ctrl |= CR_1000T_MS_ENABLE; |
1dc32918 JP |
4288 | e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_ctrl); |
4289 | if (!e1000_phy_setup_autoneg(hw) && | |
4290 | !e1000_read_phy_reg(hw, PHY_CTRL, &phy_ctrl)) { | |
1da177e4 LT |
4291 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | |
4292 | MII_CR_RESTART_AUTO_NEG); | |
1dc32918 | 4293 | e1000_write_phy_reg(hw, PHY_CTRL, phy_ctrl); |
1da177e4 LT |
4294 | } |
4295 | } | |
4296 | /* Restart process after E1000_SMARTSPEED_MAX iterations */ | |
96838a40 | 4297 | if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX) |
1da177e4 LT |
4298 | adapter->smartspeed = 0; |
4299 | } | |
4300 | ||
4301 | /** | |
4302 | * e1000_ioctl - | |
4303 | * @netdev: | |
4304 | * @ifreq: | |
4305 | * @cmd: | |
4306 | **/ | |
4307 | ||
64798845 | 4308 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
1da177e4 LT |
4309 | { |
4310 | switch (cmd) { | |
4311 | case SIOCGMIIPHY: | |
4312 | case SIOCGMIIREG: | |
4313 | case SIOCSMIIREG: | |
4314 | return e1000_mii_ioctl(netdev, ifr, cmd); | |
4315 | default: | |
4316 | return -EOPNOTSUPP; | |
4317 | } | |
4318 | } | |
4319 | ||
4320 | /** | |
4321 | * e1000_mii_ioctl - | |
4322 | * @netdev: | |
4323 | * @ifreq: | |
4324 | * @cmd: | |
4325 | **/ | |
4326 | ||
64798845 JP |
4327 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
4328 | int cmd) | |
1da177e4 | 4329 | { |
60490fe0 | 4330 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4331 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
4332 | struct mii_ioctl_data *data = if_mii(ifr); |
4333 | int retval; | |
406874a7 JP |
4334 | u16 mii_reg; |
4335 | u16 spddplx; | |
97876fc6 | 4336 | unsigned long flags; |
1da177e4 | 4337 | |
1dc32918 | 4338 | if (hw->media_type != e1000_media_type_copper) |
1da177e4 LT |
4339 | return -EOPNOTSUPP; |
4340 | ||
4341 | switch (cmd) { | |
4342 | case SIOCGMIIPHY: | |
1dc32918 | 4343 | data->phy_id = hw->phy_addr; |
1da177e4 LT |
4344 | break; |
4345 | case SIOCGMIIREG: | |
96838a40 | 4346 | if (!capable(CAP_NET_ADMIN)) |
1da177e4 | 4347 | return -EPERM; |
97876fc6 | 4348 | spin_lock_irqsave(&adapter->stats_lock, flags); |
1dc32918 | 4349 | if (e1000_read_phy_reg(hw, data->reg_num & 0x1F, |
97876fc6 MC |
4350 | &data->val_out)) { |
4351 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4352 | return -EIO; |
97876fc6 MC |
4353 | } |
4354 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 LT |
4355 | break; |
4356 | case SIOCSMIIREG: | |
96838a40 | 4357 | if (!capable(CAP_NET_ADMIN)) |
1da177e4 | 4358 | return -EPERM; |
96838a40 | 4359 | if (data->reg_num & ~(0x1F)) |
1da177e4 LT |
4360 | return -EFAULT; |
4361 | mii_reg = data->val_in; | |
97876fc6 | 4362 | spin_lock_irqsave(&adapter->stats_lock, flags); |
1dc32918 | 4363 | if (e1000_write_phy_reg(hw, data->reg_num, |
97876fc6 MC |
4364 | mii_reg)) { |
4365 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4366 | return -EIO; |
97876fc6 | 4367 | } |
f0163ac4 | 4368 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
1dc32918 | 4369 | if (hw->media_type == e1000_media_type_copper) { |
1da177e4 LT |
4370 | switch (data->reg_num) { |
4371 | case PHY_CTRL: | |
96838a40 | 4372 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4373 | break; |
96838a40 | 4374 | if (mii_reg & MII_CR_AUTO_NEG_EN) { |
1dc32918 JP |
4375 | hw->autoneg = 1; |
4376 | hw->autoneg_advertised = 0x2F; | |
1da177e4 LT |
4377 | } else { |
4378 | if (mii_reg & 0x40) | |
4379 | spddplx = SPEED_1000; | |
4380 | else if (mii_reg & 0x2000) | |
4381 | spddplx = SPEED_100; | |
4382 | else | |
4383 | spddplx = SPEED_10; | |
4384 | spddplx += (mii_reg & 0x100) | |
cb764326 JK |
4385 | ? DUPLEX_FULL : |
4386 | DUPLEX_HALF; | |
1da177e4 LT |
4387 | retval = e1000_set_spd_dplx(adapter, |
4388 | spddplx); | |
f0163ac4 | 4389 | if (retval) |
1da177e4 LT |
4390 | return retval; |
4391 | } | |
2db10a08 AK |
4392 | if (netif_running(adapter->netdev)) |
4393 | e1000_reinit_locked(adapter); | |
4394 | else | |
1da177e4 LT |
4395 | e1000_reset(adapter); |
4396 | break; | |
4397 | case M88E1000_PHY_SPEC_CTRL: | |
4398 | case M88E1000_EXT_PHY_SPEC_CTRL: | |
1dc32918 | 4399 | if (e1000_phy_reset(hw)) |
1da177e4 LT |
4400 | return -EIO; |
4401 | break; | |
4402 | } | |
4403 | } else { | |
4404 | switch (data->reg_num) { | |
4405 | case PHY_CTRL: | |
96838a40 | 4406 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4407 | break; |
2db10a08 AK |
4408 | if (netif_running(adapter->netdev)) |
4409 | e1000_reinit_locked(adapter); | |
4410 | else | |
1da177e4 LT |
4411 | e1000_reset(adapter); |
4412 | break; | |
4413 | } | |
4414 | } | |
4415 | break; | |
4416 | default: | |
4417 | return -EOPNOTSUPP; | |
4418 | } | |
4419 | return E1000_SUCCESS; | |
4420 | } | |
4421 | ||
64798845 | 4422 | void e1000_pci_set_mwi(struct e1000_hw *hw) |
1da177e4 LT |
4423 | { |
4424 | struct e1000_adapter *adapter = hw->back; | |
2648345f | 4425 | int ret_val = pci_set_mwi(adapter->pdev); |
1da177e4 | 4426 | |
96838a40 | 4427 | if (ret_val) |
2648345f | 4428 | DPRINTK(PROBE, ERR, "Error in setting MWI\n"); |
1da177e4 LT |
4429 | } |
4430 | ||
64798845 | 4431 | void e1000_pci_clear_mwi(struct e1000_hw *hw) |
1da177e4 LT |
4432 | { |
4433 | struct e1000_adapter *adapter = hw->back; | |
4434 | ||
4435 | pci_clear_mwi(adapter->pdev); | |
4436 | } | |
4437 | ||
64798845 | 4438 | int e1000_pcix_get_mmrbc(struct e1000_hw *hw) |
007755eb PO |
4439 | { |
4440 | struct e1000_adapter *adapter = hw->back; | |
4441 | return pcix_get_mmrbc(adapter->pdev); | |
4442 | } | |
4443 | ||
64798845 | 4444 | void e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc) |
007755eb PO |
4445 | { |
4446 | struct e1000_adapter *adapter = hw->back; | |
4447 | pcix_set_mmrbc(adapter->pdev, mmrbc); | |
4448 | } | |
4449 | ||
64798845 | 4450 | s32 e1000_read_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value) |
caeccb68 JK |
4451 | { |
4452 | struct e1000_adapter *adapter = hw->back; | |
406874a7 | 4453 | u16 cap_offset; |
caeccb68 JK |
4454 | |
4455 | cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP); | |
4456 | if (!cap_offset) | |
4457 | return -E1000_ERR_CONFIG; | |
4458 | ||
4459 | pci_read_config_word(adapter->pdev, cap_offset + reg, value); | |
4460 | ||
4461 | return E1000_SUCCESS; | |
4462 | } | |
4463 | ||
64798845 | 4464 | void e1000_io_write(struct e1000_hw *hw, unsigned long port, u32 value) |
1da177e4 LT |
4465 | { |
4466 | outl(value, port); | |
4467 | } | |
4468 | ||
64798845 JP |
4469 | static void e1000_vlan_rx_register(struct net_device *netdev, |
4470 | struct vlan_group *grp) | |
1da177e4 | 4471 | { |
60490fe0 | 4472 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4473 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 4474 | u32 ctrl, rctl; |
1da177e4 | 4475 | |
9150b76a JB |
4476 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4477 | e1000_irq_disable(adapter); | |
1da177e4 LT |
4478 | adapter->vlgrp = grp; |
4479 | ||
96838a40 | 4480 | if (grp) { |
1da177e4 | 4481 | /* enable VLAN tag insert/strip */ |
1dc32918 | 4482 | ctrl = er32(CTRL); |
1da177e4 | 4483 | ctrl |= E1000_CTRL_VME; |
1dc32918 | 4484 | ew32(CTRL, ctrl); |
1da177e4 | 4485 | |
cd94dd0b | 4486 | if (adapter->hw.mac_type != e1000_ich8lan) { |
90fb5135 | 4487 | /* enable VLAN receive filtering */ |
1dc32918 | 4488 | rctl = er32(RCTL); |
90fb5135 | 4489 | rctl &= ~E1000_RCTL_CFIEN; |
1dc32918 | 4490 | ew32(RCTL, rctl); |
90fb5135 | 4491 | e1000_update_mng_vlan(adapter); |
cd94dd0b | 4492 | } |
1da177e4 LT |
4493 | } else { |
4494 | /* disable VLAN tag insert/strip */ | |
1dc32918 | 4495 | ctrl = er32(CTRL); |
1da177e4 | 4496 | ctrl &= ~E1000_CTRL_VME; |
1dc32918 | 4497 | ew32(CTRL, ctrl); |
1da177e4 | 4498 | |
cd94dd0b | 4499 | if (adapter->hw.mac_type != e1000_ich8lan) { |
90fb5135 | 4500 | if (adapter->mng_vlan_id != |
406874a7 | 4501 | (u16)E1000_MNG_VLAN_NONE) { |
90fb5135 AK |
4502 | e1000_vlan_rx_kill_vid(netdev, |
4503 | adapter->mng_vlan_id); | |
4504 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
4505 | } | |
cd94dd0b | 4506 | } |
1da177e4 LT |
4507 | } |
4508 | ||
9150b76a JB |
4509 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4510 | e1000_irq_enable(adapter); | |
1da177e4 LT |
4511 | } |
4512 | ||
64798845 | 4513 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
1da177e4 | 4514 | { |
60490fe0 | 4515 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4516 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 4517 | u32 vfta, index; |
96838a40 | 4518 | |
1dc32918 | 4519 | if ((hw->mng_cookie.status & |
96838a40 JB |
4520 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
4521 | (vid == adapter->mng_vlan_id)) | |
2d7edb92 | 4522 | return; |
1da177e4 LT |
4523 | /* add VID to filter table */ |
4524 | index = (vid >> 5) & 0x7F; | |
1dc32918 | 4525 | vfta = E1000_READ_REG_ARRAY(hw, VFTA, index); |
1da177e4 | 4526 | vfta |= (1 << (vid & 0x1F)); |
1dc32918 | 4527 | e1000_write_vfta(hw, index, vfta); |
1da177e4 LT |
4528 | } |
4529 | ||
64798845 | 4530 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
1da177e4 | 4531 | { |
60490fe0 | 4532 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4533 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 4534 | u32 vfta, index; |
1da177e4 | 4535 | |
9150b76a JB |
4536 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4537 | e1000_irq_disable(adapter); | |
5c15bdec | 4538 | vlan_group_set_device(adapter->vlgrp, vid, NULL); |
9150b76a JB |
4539 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4540 | e1000_irq_enable(adapter); | |
1da177e4 | 4541 | |
1dc32918 | 4542 | if ((hw->mng_cookie.status & |
96838a40 | 4543 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
ff147013 JK |
4544 | (vid == adapter->mng_vlan_id)) { |
4545 | /* release control to f/w */ | |
4546 | e1000_release_hw_control(adapter); | |
2d7edb92 | 4547 | return; |
ff147013 JK |
4548 | } |
4549 | ||
1da177e4 LT |
4550 | /* remove VID from filter table */ |
4551 | index = (vid >> 5) & 0x7F; | |
1dc32918 | 4552 | vfta = E1000_READ_REG_ARRAY(hw, VFTA, index); |
1da177e4 | 4553 | vfta &= ~(1 << (vid & 0x1F)); |
1dc32918 | 4554 | e1000_write_vfta(hw, index, vfta); |
1da177e4 LT |
4555 | } |
4556 | ||
64798845 | 4557 | static void e1000_restore_vlan(struct e1000_adapter *adapter) |
1da177e4 LT |
4558 | { |
4559 | e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
4560 | ||
96838a40 | 4561 | if (adapter->vlgrp) { |
406874a7 | 4562 | u16 vid; |
96838a40 | 4563 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { |
5c15bdec | 4564 | if (!vlan_group_get_device(adapter->vlgrp, vid)) |
1da177e4 LT |
4565 | continue; |
4566 | e1000_vlan_rx_add_vid(adapter->netdev, vid); | |
4567 | } | |
4568 | } | |
4569 | } | |
4570 | ||
64798845 | 4571 | int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx) |
1da177e4 | 4572 | { |
1dc32918 JP |
4573 | struct e1000_hw *hw = &adapter->hw; |
4574 | ||
4575 | hw->autoneg = 0; | |
1da177e4 | 4576 | |
6921368f | 4577 | /* Fiber NICs only allow 1000 gbps Full duplex */ |
1dc32918 | 4578 | if ((hw->media_type == e1000_media_type_fiber) && |
6921368f MC |
4579 | spddplx != (SPEED_1000 + DUPLEX_FULL)) { |
4580 | DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); | |
4581 | return -EINVAL; | |
4582 | } | |
4583 | ||
96838a40 | 4584 | switch (spddplx) { |
1da177e4 | 4585 | case SPEED_10 + DUPLEX_HALF: |
1dc32918 | 4586 | hw->forced_speed_duplex = e1000_10_half; |
1da177e4 LT |
4587 | break; |
4588 | case SPEED_10 + DUPLEX_FULL: | |
1dc32918 | 4589 | hw->forced_speed_duplex = e1000_10_full; |
1da177e4 LT |
4590 | break; |
4591 | case SPEED_100 + DUPLEX_HALF: | |
1dc32918 | 4592 | hw->forced_speed_duplex = e1000_100_half; |
1da177e4 LT |
4593 | break; |
4594 | case SPEED_100 + DUPLEX_FULL: | |
1dc32918 | 4595 | hw->forced_speed_duplex = e1000_100_full; |
1da177e4 LT |
4596 | break; |
4597 | case SPEED_1000 + DUPLEX_FULL: | |
1dc32918 JP |
4598 | hw->autoneg = 1; |
4599 | hw->autoneg_advertised = ADVERTISE_1000_FULL; | |
1da177e4 LT |
4600 | break; |
4601 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ | |
4602 | default: | |
2648345f | 4603 | DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); |
1da177e4 LT |
4604 | return -EINVAL; |
4605 | } | |
4606 | return 0; | |
4607 | } | |
4608 | ||
64798845 | 4609 | static int e1000_suspend(struct pci_dev *pdev, pm_message_t state) |
1da177e4 LT |
4610 | { |
4611 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 4612 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4613 | struct e1000_hw *hw = &adapter->hw; |
406874a7 JP |
4614 | u32 ctrl, ctrl_ext, rctl, status; |
4615 | u32 wufc = adapter->wol; | |
6fdfef16 | 4616 | #ifdef CONFIG_PM |
240b1710 | 4617 | int retval = 0; |
6fdfef16 | 4618 | #endif |
1da177e4 LT |
4619 | |
4620 | netif_device_detach(netdev); | |
4621 | ||
2db10a08 AK |
4622 | if (netif_running(netdev)) { |
4623 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); | |
1da177e4 | 4624 | e1000_down(adapter); |
2db10a08 | 4625 | } |
1da177e4 | 4626 | |
2f82665f | 4627 | #ifdef CONFIG_PM |
1d33e9c6 | 4628 | retval = pci_save_state(pdev); |
2f82665f JB |
4629 | if (retval) |
4630 | return retval; | |
4631 | #endif | |
4632 | ||
1dc32918 | 4633 | status = er32(STATUS); |
96838a40 | 4634 | if (status & E1000_STATUS_LU) |
1da177e4 LT |
4635 | wufc &= ~E1000_WUFC_LNKC; |
4636 | ||
96838a40 | 4637 | if (wufc) { |
1da177e4 | 4638 | e1000_setup_rctl(adapter); |
db0ce50d | 4639 | e1000_set_rx_mode(netdev); |
1da177e4 LT |
4640 | |
4641 | /* turn on all-multi mode if wake on multicast is enabled */ | |
120cd576 | 4642 | if (wufc & E1000_WUFC_MC) { |
1dc32918 | 4643 | rctl = er32(RCTL); |
1da177e4 | 4644 | rctl |= E1000_RCTL_MPE; |
1dc32918 | 4645 | ew32(RCTL, rctl); |
1da177e4 LT |
4646 | } |
4647 | ||
1dc32918 JP |
4648 | if (hw->mac_type >= e1000_82540) { |
4649 | ctrl = er32(CTRL); | |
1da177e4 LT |
4650 | /* advertise wake from D3Cold */ |
4651 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
4652 | /* phy power management enable */ | |
4653 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
4654 | ctrl |= E1000_CTRL_ADVD3WUC | | |
4655 | E1000_CTRL_EN_PHY_PWR_MGMT; | |
1dc32918 | 4656 | ew32(CTRL, ctrl); |
1da177e4 LT |
4657 | } |
4658 | ||
1dc32918 JP |
4659 | if (hw->media_type == e1000_media_type_fiber || |
4660 | hw->media_type == e1000_media_type_internal_serdes) { | |
1da177e4 | 4661 | /* keep the laser running in D3 */ |
1dc32918 | 4662 | ctrl_ext = er32(CTRL_EXT); |
1da177e4 | 4663 | ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; |
1dc32918 | 4664 | ew32(CTRL_EXT, ctrl_ext); |
1da177e4 LT |
4665 | } |
4666 | ||
2d7edb92 | 4667 | /* Allow time for pending master requests to run */ |
1dc32918 | 4668 | e1000_disable_pciex_master(hw); |
2d7edb92 | 4669 | |
1dc32918 JP |
4670 | ew32(WUC, E1000_WUC_PME_EN); |
4671 | ew32(WUFC, wufc); | |
d0e027db AK |
4672 | pci_enable_wake(pdev, PCI_D3hot, 1); |
4673 | pci_enable_wake(pdev, PCI_D3cold, 1); | |
1da177e4 | 4674 | } else { |
1dc32918 JP |
4675 | ew32(WUC, 0); |
4676 | ew32(WUFC, 0); | |
d0e027db AK |
4677 | pci_enable_wake(pdev, PCI_D3hot, 0); |
4678 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
1da177e4 LT |
4679 | } |
4680 | ||
0fccd0e9 JG |
4681 | e1000_release_manageability(adapter); |
4682 | ||
4683 | /* make sure adapter isn't asleep if manageability is enabled */ | |
4684 | if (adapter->en_mng_pt) { | |
4685 | pci_enable_wake(pdev, PCI_D3hot, 1); | |
4686 | pci_enable_wake(pdev, PCI_D3cold, 1); | |
1da177e4 LT |
4687 | } |
4688 | ||
1dc32918 JP |
4689 | if (hw->phy_type == e1000_phy_igp_3) |
4690 | e1000_phy_powerdown_workaround(hw); | |
cd94dd0b | 4691 | |
edd106fc AK |
4692 | if (netif_running(netdev)) |
4693 | e1000_free_irq(adapter); | |
4694 | ||
b55ccb35 JK |
4695 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
4696 | * would have already happened in close and is redundant. */ | |
4697 | e1000_release_hw_control(adapter); | |
2d7edb92 | 4698 | |
1da177e4 | 4699 | pci_disable_device(pdev); |
240b1710 | 4700 | |
d0e027db | 4701 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); |
1da177e4 LT |
4702 | |
4703 | return 0; | |
4704 | } | |
4705 | ||
2f82665f | 4706 | #ifdef CONFIG_PM |
64798845 | 4707 | static int e1000_resume(struct pci_dev *pdev) |
1da177e4 LT |
4708 | { |
4709 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 4710 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4711 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 4712 | u32 err; |
1da177e4 | 4713 | |
d0e027db | 4714 | pci_set_power_state(pdev, PCI_D0); |
1d33e9c6 | 4715 | pci_restore_state(pdev); |
81250297 TI |
4716 | |
4717 | if (adapter->need_ioport) | |
4718 | err = pci_enable_device(pdev); | |
4719 | else | |
4720 | err = pci_enable_device_mem(pdev); | |
c7be73bc | 4721 | if (err) { |
3d1dd8cb AK |
4722 | printk(KERN_ERR "e1000: Cannot enable PCI device from suspend\n"); |
4723 | return err; | |
4724 | } | |
a4cb847d | 4725 | pci_set_master(pdev); |
1da177e4 | 4726 | |
d0e027db AK |
4727 | pci_enable_wake(pdev, PCI_D3hot, 0); |
4728 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
1da177e4 | 4729 | |
c7be73bc JP |
4730 | if (netif_running(netdev)) { |
4731 | err = e1000_request_irq(adapter); | |
4732 | if (err) | |
4733 | return err; | |
4734 | } | |
edd106fc AK |
4735 | |
4736 | e1000_power_up_phy(adapter); | |
1da177e4 | 4737 | e1000_reset(adapter); |
1dc32918 | 4738 | ew32(WUS, ~0); |
1da177e4 | 4739 | |
0fccd0e9 JG |
4740 | e1000_init_manageability(adapter); |
4741 | ||
96838a40 | 4742 | if (netif_running(netdev)) |
1da177e4 LT |
4743 | e1000_up(adapter); |
4744 | ||
4745 | netif_device_attach(netdev); | |
4746 | ||
b55ccb35 JK |
4747 | /* If the controller is 82573 and f/w is AMT, do not set |
4748 | * DRV_LOAD until the interface is up. For all other cases, | |
4749 | * let the f/w know that the h/w is now under the control | |
4750 | * of the driver. */ | |
1dc32918 JP |
4751 | if (hw->mac_type != e1000_82573 || |
4752 | !e1000_check_mng_mode(hw)) | |
b55ccb35 | 4753 | e1000_get_hw_control(adapter); |
2d7edb92 | 4754 | |
1da177e4 LT |
4755 | return 0; |
4756 | } | |
4757 | #endif | |
c653e635 AK |
4758 | |
4759 | static void e1000_shutdown(struct pci_dev *pdev) | |
4760 | { | |
4761 | e1000_suspend(pdev, PMSG_SUSPEND); | |
4762 | } | |
4763 | ||
1da177e4 LT |
4764 | #ifdef CONFIG_NET_POLL_CONTROLLER |
4765 | /* | |
4766 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
4767 | * without having to re-enable interrupts. It's not called while | |
4768 | * the interrupt routine is executing. | |
4769 | */ | |
64798845 | 4770 | static void e1000_netpoll(struct net_device *netdev) |
1da177e4 | 4771 | { |
60490fe0 | 4772 | struct e1000_adapter *adapter = netdev_priv(netdev); |
d3d9e484 | 4773 | |
1da177e4 | 4774 | disable_irq(adapter->pdev->irq); |
7d12e780 | 4775 | e1000_intr(adapter->pdev->irq, netdev); |
1da177e4 LT |
4776 | enable_irq(adapter->pdev->irq); |
4777 | } | |
4778 | #endif | |
4779 | ||
9026729b AK |
4780 | /** |
4781 | * e1000_io_error_detected - called when PCI error is detected | |
4782 | * @pdev: Pointer to PCI device | |
4783 | * @state: The current pci conneection state | |
4784 | * | |
4785 | * This function is called after a PCI bus error affecting | |
4786 | * this device has been detected. | |
4787 | */ | |
64798845 JP |
4788 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
4789 | pci_channel_state_t state) | |
9026729b AK |
4790 | { |
4791 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4cf1653a | 4792 | struct e1000_adapter *adapter = netdev_priv(netdev); |
9026729b AK |
4793 | |
4794 | netif_device_detach(netdev); | |
4795 | ||
4796 | if (netif_running(netdev)) | |
4797 | e1000_down(adapter); | |
72e8d6bb | 4798 | pci_disable_device(pdev); |
9026729b AK |
4799 | |
4800 | /* Request a slot slot reset. */ | |
4801 | return PCI_ERS_RESULT_NEED_RESET; | |
4802 | } | |
4803 | ||
4804 | /** | |
4805 | * e1000_io_slot_reset - called after the pci bus has been reset. | |
4806 | * @pdev: Pointer to PCI device | |
4807 | * | |
4808 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
4809 | * resembles the first-half of the e1000_resume routine. | |
4810 | */ | |
4811 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) | |
4812 | { | |
4813 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4cf1653a | 4814 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4815 | struct e1000_hw *hw = &adapter->hw; |
81250297 | 4816 | int err; |
9026729b | 4817 | |
81250297 TI |
4818 | if (adapter->need_ioport) |
4819 | err = pci_enable_device(pdev); | |
4820 | else | |
4821 | err = pci_enable_device_mem(pdev); | |
4822 | if (err) { | |
9026729b AK |
4823 | printk(KERN_ERR "e1000: Cannot re-enable PCI device after reset.\n"); |
4824 | return PCI_ERS_RESULT_DISCONNECT; | |
4825 | } | |
4826 | pci_set_master(pdev); | |
4827 | ||
dbf38c94 LV |
4828 | pci_enable_wake(pdev, PCI_D3hot, 0); |
4829 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
9026729b | 4830 | |
9026729b | 4831 | e1000_reset(adapter); |
1dc32918 | 4832 | ew32(WUS, ~0); |
9026729b AK |
4833 | |
4834 | return PCI_ERS_RESULT_RECOVERED; | |
4835 | } | |
4836 | ||
4837 | /** | |
4838 | * e1000_io_resume - called when traffic can start flowing again. | |
4839 | * @pdev: Pointer to PCI device | |
4840 | * | |
4841 | * This callback is called when the error recovery driver tells us that | |
4842 | * its OK to resume normal operation. Implementation resembles the | |
4843 | * second-half of the e1000_resume routine. | |
4844 | */ | |
4845 | static void e1000_io_resume(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; |
0fccd0e9 JG |
4850 | |
4851 | e1000_init_manageability(adapter); | |
9026729b AK |
4852 | |
4853 | if (netif_running(netdev)) { | |
4854 | if (e1000_up(adapter)) { | |
4855 | printk("e1000: can't bring device back up after reset\n"); | |
4856 | return; | |
4857 | } | |
4858 | } | |
4859 | ||
4860 | netif_device_attach(netdev); | |
4861 | ||
0fccd0e9 JG |
4862 | /* If the controller is 82573 and f/w is AMT, do not set |
4863 | * DRV_LOAD until the interface is up. For all other cases, | |
4864 | * let the f/w know that the h/w is now under the control | |
4865 | * of the driver. */ | |
1dc32918 JP |
4866 | if (hw->mac_type != e1000_82573 || |
4867 | !e1000_check_mng_mode(hw)) | |
0fccd0e9 | 4868 | e1000_get_hw_control(adapter); |
9026729b | 4869 | |
9026729b AK |
4870 | } |
4871 | ||
1da177e4 | 4872 | /* e1000_main.c */ |