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"; |
1da177e4 LT |
34 | #ifndef CONFIG_E1000_NAPI |
35 | #define DRIVERNAPI | |
36 | #else | |
37 | #define DRIVERNAPI "-NAPI" | |
38 | #endif | |
7e721579 | 39 | #define DRV_VERSION "7.3.20-k2"DRIVERNAPI |
abec42a4 SH |
40 | const char e1000_driver_version[] = DRV_VERSION; |
41 | static const char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation."; | |
1da177e4 LT |
42 | |
43 | /* e1000_pci_tbl - PCI Device ID Table | |
44 | * | |
45 | * Last entry must be all 0s | |
46 | * | |
47 | * Macro expands to... | |
48 | * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)} | |
49 | */ | |
50 | static struct pci_device_id e1000_pci_tbl[] = { | |
51 | INTEL_E1000_ETHERNET_DEVICE(0x1000), | |
52 | INTEL_E1000_ETHERNET_DEVICE(0x1001), | |
53 | INTEL_E1000_ETHERNET_DEVICE(0x1004), | |
54 | INTEL_E1000_ETHERNET_DEVICE(0x1008), | |
55 | INTEL_E1000_ETHERNET_DEVICE(0x1009), | |
56 | INTEL_E1000_ETHERNET_DEVICE(0x100C), | |
57 | INTEL_E1000_ETHERNET_DEVICE(0x100D), | |
58 | INTEL_E1000_ETHERNET_DEVICE(0x100E), | |
59 | INTEL_E1000_ETHERNET_DEVICE(0x100F), | |
60 | INTEL_E1000_ETHERNET_DEVICE(0x1010), | |
61 | INTEL_E1000_ETHERNET_DEVICE(0x1011), | |
62 | INTEL_E1000_ETHERNET_DEVICE(0x1012), | |
63 | INTEL_E1000_ETHERNET_DEVICE(0x1013), | |
64 | INTEL_E1000_ETHERNET_DEVICE(0x1014), | |
65 | INTEL_E1000_ETHERNET_DEVICE(0x1015), | |
66 | INTEL_E1000_ETHERNET_DEVICE(0x1016), | |
67 | INTEL_E1000_ETHERNET_DEVICE(0x1017), | |
68 | INTEL_E1000_ETHERNET_DEVICE(0x1018), | |
69 | INTEL_E1000_ETHERNET_DEVICE(0x1019), | |
2648345f | 70 | INTEL_E1000_ETHERNET_DEVICE(0x101A), |
1da177e4 LT |
71 | INTEL_E1000_ETHERNET_DEVICE(0x101D), |
72 | INTEL_E1000_ETHERNET_DEVICE(0x101E), | |
73 | INTEL_E1000_ETHERNET_DEVICE(0x1026), | |
74 | INTEL_E1000_ETHERNET_DEVICE(0x1027), | |
75 | INTEL_E1000_ETHERNET_DEVICE(0x1028), | |
76 | INTEL_E1000_ETHERNET_DEVICE(0x1075), | |
77 | INTEL_E1000_ETHERNET_DEVICE(0x1076), | |
78 | INTEL_E1000_ETHERNET_DEVICE(0x1077), | |
79 | INTEL_E1000_ETHERNET_DEVICE(0x1078), | |
80 | INTEL_E1000_ETHERNET_DEVICE(0x1079), | |
81 | INTEL_E1000_ETHERNET_DEVICE(0x107A), | |
82 | INTEL_E1000_ETHERNET_DEVICE(0x107B), | |
83 | INTEL_E1000_ETHERNET_DEVICE(0x107C), | |
84 | INTEL_E1000_ETHERNET_DEVICE(0x108A), | |
b7ee49db | 85 | INTEL_E1000_ETHERNET_DEVICE(0x1099), |
b7ee49db | 86 | INTEL_E1000_ETHERNET_DEVICE(0x10B5), |
1da177e4 LT |
87 | /* required last entry */ |
88 | {0,} | |
89 | }; | |
90 | ||
91 | MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); | |
92 | ||
35574764 NN |
93 | int e1000_up(struct e1000_adapter *adapter); |
94 | void e1000_down(struct e1000_adapter *adapter); | |
95 | void e1000_reinit_locked(struct e1000_adapter *adapter); | |
96 | void e1000_reset(struct e1000_adapter *adapter); | |
406874a7 | 97 | int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx); |
35574764 NN |
98 | int e1000_setup_all_tx_resources(struct e1000_adapter *adapter); |
99 | int e1000_setup_all_rx_resources(struct e1000_adapter *adapter); | |
100 | void e1000_free_all_tx_resources(struct e1000_adapter *adapter); | |
101 | void e1000_free_all_rx_resources(struct e1000_adapter *adapter); | |
3ad2cc67 | 102 | static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
35574764 | 103 | struct e1000_tx_ring *txdr); |
3ad2cc67 | 104 | static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
35574764 | 105 | struct e1000_rx_ring *rxdr); |
3ad2cc67 | 106 | static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
35574764 | 107 | struct e1000_tx_ring *tx_ring); |
3ad2cc67 | 108 | static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
35574764 NN |
109 | struct e1000_rx_ring *rx_ring); |
110 | void e1000_update_stats(struct e1000_adapter *adapter); | |
1da177e4 LT |
111 | |
112 | static int e1000_init_module(void); | |
113 | static void e1000_exit_module(void); | |
114 | static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent); | |
115 | static void __devexit e1000_remove(struct pci_dev *pdev); | |
581d708e | 116 | static int e1000_alloc_queues(struct e1000_adapter *adapter); |
1da177e4 LT |
117 | static int e1000_sw_init(struct e1000_adapter *adapter); |
118 | static int e1000_open(struct net_device *netdev); | |
119 | static int e1000_close(struct net_device *netdev); | |
120 | static void e1000_configure_tx(struct e1000_adapter *adapter); | |
121 | static void e1000_configure_rx(struct e1000_adapter *adapter); | |
122 | static void e1000_setup_rctl(struct e1000_adapter *adapter); | |
581d708e MC |
123 | static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter); |
124 | static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter); | |
125 | static void e1000_clean_tx_ring(struct e1000_adapter *adapter, | |
126 | struct e1000_tx_ring *tx_ring); | |
127 | static void e1000_clean_rx_ring(struct e1000_adapter *adapter, | |
128 | struct e1000_rx_ring *rx_ring); | |
db0ce50d | 129 | static void e1000_set_rx_mode(struct net_device *netdev); |
1da177e4 LT |
130 | static void e1000_update_phy_info(unsigned long data); |
131 | static void e1000_watchdog(unsigned long data); | |
1da177e4 LT |
132 | static void e1000_82547_tx_fifo_stall(unsigned long data); |
133 | static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev); | |
134 | static struct net_device_stats * e1000_get_stats(struct net_device *netdev); | |
135 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu); | |
136 | static int e1000_set_mac(struct net_device *netdev, void *p); | |
7d12e780 | 137 | static irqreturn_t e1000_intr(int irq, void *data); |
9ac98284 | 138 | static irqreturn_t e1000_intr_msi(int irq, void *data); |
c3033b01 JP |
139 | static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
140 | struct e1000_tx_ring *tx_ring); | |
1da177e4 | 141 | #ifdef CONFIG_E1000_NAPI |
bea3348e | 142 | static int e1000_clean(struct napi_struct *napi, int budget); |
c3033b01 JP |
143 | static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
144 | struct e1000_rx_ring *rx_ring, | |
145 | int *work_done, int work_to_do); | |
146 | static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, | |
147 | struct e1000_rx_ring *rx_ring, | |
148 | int *work_done, int work_to_do); | |
1da177e4 | 149 | #else |
c3033b01 JP |
150 | static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
151 | struct e1000_rx_ring *rx_ring); | |
152 | static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, | |
153 | struct e1000_rx_ring *rx_ring); | |
1da177e4 | 154 | #endif |
581d708e | 155 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
72d64a43 JK |
156 | struct e1000_rx_ring *rx_ring, |
157 | int cleaned_count); | |
581d708e | 158 | static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, |
72d64a43 JK |
159 | struct e1000_rx_ring *rx_ring, |
160 | int cleaned_count); | |
1da177e4 LT |
161 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); |
162 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
163 | int cmd); | |
1da177e4 LT |
164 | static void e1000_enter_82542_rst(struct e1000_adapter *adapter); |
165 | static void e1000_leave_82542_rst(struct e1000_adapter *adapter); | |
166 | static void e1000_tx_timeout(struct net_device *dev); | |
65f27f38 | 167 | static void e1000_reset_task(struct work_struct *work); |
1da177e4 | 168 | static void e1000_smartspeed(struct e1000_adapter *adapter); |
e619d523 AK |
169 | static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
170 | struct sk_buff *skb); | |
1da177e4 LT |
171 | |
172 | static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp); | |
406874a7 JP |
173 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid); |
174 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid); | |
1da177e4 LT |
175 | static void e1000_restore_vlan(struct e1000_adapter *adapter); |
176 | ||
977e74b5 | 177 | static int e1000_suspend(struct pci_dev *pdev, pm_message_t state); |
6fdfef16 | 178 | #ifdef CONFIG_PM |
1da177e4 LT |
179 | static int e1000_resume(struct pci_dev *pdev); |
180 | #endif | |
c653e635 | 181 | static void e1000_shutdown(struct pci_dev *pdev); |
1da177e4 LT |
182 | |
183 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
184 | /* for netdump / net console */ | |
185 | static void e1000_netpoll (struct net_device *netdev); | |
186 | #endif | |
187 | ||
1f753861 JB |
188 | #define COPYBREAK_DEFAULT 256 |
189 | static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT; | |
190 | module_param(copybreak, uint, 0644); | |
191 | MODULE_PARM_DESC(copybreak, | |
192 | "Maximum size of packet that is copied to a new buffer on receive"); | |
193 | ||
9026729b AK |
194 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
195 | pci_channel_state_t state); | |
196 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev); | |
197 | static void e1000_io_resume(struct pci_dev *pdev); | |
198 | ||
199 | static struct pci_error_handlers e1000_err_handler = { | |
200 | .error_detected = e1000_io_error_detected, | |
201 | .slot_reset = e1000_io_slot_reset, | |
202 | .resume = e1000_io_resume, | |
203 | }; | |
24025e4e | 204 | |
1da177e4 LT |
205 | static struct pci_driver e1000_driver = { |
206 | .name = e1000_driver_name, | |
207 | .id_table = e1000_pci_tbl, | |
208 | .probe = e1000_probe, | |
209 | .remove = __devexit_p(e1000_remove), | |
c4e24f01 | 210 | #ifdef CONFIG_PM |
1da177e4 | 211 | /* Power Managment Hooks */ |
1da177e4 | 212 | .suspend = e1000_suspend, |
c653e635 | 213 | .resume = e1000_resume, |
1da177e4 | 214 | #endif |
9026729b AK |
215 | .shutdown = e1000_shutdown, |
216 | .err_handler = &e1000_err_handler | |
1da177e4 LT |
217 | }; |
218 | ||
219 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
220 | MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); | |
221 | MODULE_LICENSE("GPL"); | |
222 | MODULE_VERSION(DRV_VERSION); | |
223 | ||
224 | static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; | |
225 | module_param(debug, int, 0); | |
226 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
227 | ||
228 | /** | |
229 | * e1000_init_module - Driver Registration Routine | |
230 | * | |
231 | * e1000_init_module is the first routine called when the driver is | |
232 | * loaded. All it does is register with the PCI subsystem. | |
233 | **/ | |
234 | ||
235 | static int __init | |
236 | e1000_init_module(void) | |
237 | { | |
238 | int ret; | |
239 | printk(KERN_INFO "%s - version %s\n", | |
240 | e1000_driver_string, e1000_driver_version); | |
241 | ||
242 | printk(KERN_INFO "%s\n", e1000_copyright); | |
243 | ||
29917620 | 244 | ret = pci_register_driver(&e1000_driver); |
1f753861 JB |
245 | if (copybreak != COPYBREAK_DEFAULT) { |
246 | if (copybreak == 0) | |
247 | printk(KERN_INFO "e1000: copybreak disabled\n"); | |
248 | else | |
249 | printk(KERN_INFO "e1000: copybreak enabled for " | |
250 | "packets <= %u bytes\n", copybreak); | |
251 | } | |
1da177e4 LT |
252 | return ret; |
253 | } | |
254 | ||
255 | module_init(e1000_init_module); | |
256 | ||
257 | /** | |
258 | * e1000_exit_module - Driver Exit Cleanup Routine | |
259 | * | |
260 | * e1000_exit_module is called just before the driver is removed | |
261 | * from memory. | |
262 | **/ | |
263 | ||
264 | static void __exit | |
265 | e1000_exit_module(void) | |
266 | { | |
1da177e4 LT |
267 | pci_unregister_driver(&e1000_driver); |
268 | } | |
269 | ||
270 | module_exit(e1000_exit_module); | |
271 | ||
2db10a08 AK |
272 | static int e1000_request_irq(struct e1000_adapter *adapter) |
273 | { | |
274 | struct net_device *netdev = adapter->netdev; | |
3e18826c | 275 | irq_handler_t handler = e1000_intr; |
e94bd23f AK |
276 | int irq_flags = IRQF_SHARED; |
277 | int err; | |
2db10a08 | 278 | |
9ac98284 | 279 | if (adapter->hw.mac_type >= e1000_82571) { |
e94bd23f AK |
280 | adapter->have_msi = !pci_enable_msi(adapter->pdev); |
281 | if (adapter->have_msi) { | |
3e18826c | 282 | handler = e1000_intr_msi; |
e94bd23f | 283 | irq_flags = 0; |
2db10a08 AK |
284 | } |
285 | } | |
e94bd23f AK |
286 | |
287 | err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name, | |
288 | netdev); | |
289 | if (err) { | |
290 | if (adapter->have_msi) | |
291 | pci_disable_msi(adapter->pdev); | |
2db10a08 AK |
292 | DPRINTK(PROBE, ERR, |
293 | "Unable to allocate interrupt Error: %d\n", err); | |
e94bd23f | 294 | } |
2db10a08 AK |
295 | |
296 | return err; | |
297 | } | |
298 | ||
299 | static void e1000_free_irq(struct e1000_adapter *adapter) | |
300 | { | |
301 | struct net_device *netdev = adapter->netdev; | |
302 | ||
303 | free_irq(adapter->pdev->irq, netdev); | |
304 | ||
2db10a08 AK |
305 | if (adapter->have_msi) |
306 | pci_disable_msi(adapter->pdev); | |
2db10a08 AK |
307 | } |
308 | ||
1da177e4 LT |
309 | /** |
310 | * e1000_irq_disable - Mask off interrupt generation on the NIC | |
311 | * @adapter: board private structure | |
312 | **/ | |
313 | ||
e619d523 | 314 | static void |
1da177e4 LT |
315 | e1000_irq_disable(struct e1000_adapter *adapter) |
316 | { | |
1da177e4 LT |
317 | E1000_WRITE_REG(&adapter->hw, IMC, ~0); |
318 | E1000_WRITE_FLUSH(&adapter->hw); | |
319 | synchronize_irq(adapter->pdev->irq); | |
320 | } | |
321 | ||
322 | /** | |
323 | * e1000_irq_enable - Enable default interrupt generation settings | |
324 | * @adapter: board private structure | |
325 | **/ | |
326 | ||
e619d523 | 327 | static void |
1da177e4 LT |
328 | e1000_irq_enable(struct e1000_adapter *adapter) |
329 | { | |
9150b76a JB |
330 | E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK); |
331 | E1000_WRITE_FLUSH(&adapter->hw); | |
1da177e4 | 332 | } |
3ad2cc67 AB |
333 | |
334 | static void | |
2d7edb92 MC |
335 | e1000_update_mng_vlan(struct e1000_adapter *adapter) |
336 | { | |
337 | struct net_device *netdev = adapter->netdev; | |
406874a7 JP |
338 | u16 vid = adapter->hw.mng_cookie.vlan_id; |
339 | u16 old_vid = adapter->mng_vlan_id; | |
96838a40 | 340 | if (adapter->vlgrp) { |
5c15bdec | 341 | if (!vlan_group_get_device(adapter->vlgrp, vid)) { |
96838a40 | 342 | if (adapter->hw.mng_cookie.status & |
2d7edb92 MC |
343 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) { |
344 | e1000_vlan_rx_add_vid(netdev, vid); | |
345 | adapter->mng_vlan_id = vid; | |
346 | } else | |
347 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
96838a40 | 348 | |
406874a7 | 349 | if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && |
96838a40 | 350 | (vid != old_vid) && |
5c15bdec | 351 | !vlan_group_get_device(adapter->vlgrp, old_vid)) |
2d7edb92 | 352 | e1000_vlan_rx_kill_vid(netdev, old_vid); |
c5f226fe JK |
353 | } else |
354 | adapter->mng_vlan_id = vid; | |
2d7edb92 MC |
355 | } |
356 | } | |
b55ccb35 JK |
357 | |
358 | /** | |
359 | * e1000_release_hw_control - release control of the h/w to f/w | |
360 | * @adapter: address of board private structure | |
361 | * | |
362 | * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit. | |
363 | * For ASF and Pass Through versions of f/w this means that the | |
364 | * driver is no longer loaded. For AMT version (only with 82573) i | |
90fb5135 | 365 | * of the f/w this means that the network i/f is closed. |
76c224bc | 366 | * |
b55ccb35 JK |
367 | **/ |
368 | ||
e619d523 | 369 | static void |
b55ccb35 JK |
370 | e1000_release_hw_control(struct e1000_adapter *adapter) |
371 | { | |
406874a7 JP |
372 | u32 ctrl_ext; |
373 | u32 swsm; | |
b55ccb35 JK |
374 | |
375 | /* Let firmware taken over control of h/w */ | |
376 | switch (adapter->hw.mac_type) { | |
b55ccb35 JK |
377 | case e1000_82573: |
378 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
379 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
380 | swsm & ~E1000_SWSM_DRV_LOAD); | |
31d76442 BA |
381 | break; |
382 | case e1000_82571: | |
383 | case e1000_82572: | |
384 | case e1000_80003es2lan: | |
cd94dd0b | 385 | case e1000_ich8lan: |
31d76442 | 386 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); |
cd94dd0b | 387 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, |
31d76442 | 388 | ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); |
cd94dd0b | 389 | break; |
b55ccb35 JK |
390 | default: |
391 | break; | |
392 | } | |
393 | } | |
394 | ||
395 | /** | |
396 | * e1000_get_hw_control - get control of the h/w from f/w | |
397 | * @adapter: address of board private structure | |
398 | * | |
399 | * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit. | |
76c224bc AK |
400 | * For ASF and Pass Through versions of f/w this means that |
401 | * the driver is loaded. For AMT version (only with 82573) | |
90fb5135 | 402 | * of the f/w this means that the network i/f is open. |
76c224bc | 403 | * |
b55ccb35 JK |
404 | **/ |
405 | ||
e619d523 | 406 | static void |
b55ccb35 JK |
407 | e1000_get_hw_control(struct e1000_adapter *adapter) |
408 | { | |
406874a7 JP |
409 | u32 ctrl_ext; |
410 | u32 swsm; | |
90fb5135 | 411 | |
b55ccb35 JK |
412 | /* Let firmware know the driver has taken over */ |
413 | switch (adapter->hw.mac_type) { | |
b55ccb35 JK |
414 | case e1000_82573: |
415 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
416 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
417 | swsm | E1000_SWSM_DRV_LOAD); | |
418 | break; | |
31d76442 BA |
419 | case e1000_82571: |
420 | case e1000_82572: | |
421 | case e1000_80003es2lan: | |
cd94dd0b | 422 | case e1000_ich8lan: |
31d76442 BA |
423 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); |
424 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, | |
425 | ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); | |
cd94dd0b | 426 | break; |
b55ccb35 JK |
427 | default: |
428 | break; | |
429 | } | |
430 | } | |
431 | ||
0fccd0e9 JG |
432 | static void |
433 | e1000_init_manageability(struct e1000_adapter *adapter) | |
434 | { | |
435 | if (adapter->en_mng_pt) { | |
406874a7 | 436 | u32 manc = E1000_READ_REG(&adapter->hw, MANC); |
0fccd0e9 JG |
437 | |
438 | /* disable hardware interception of ARP */ | |
439 | manc &= ~(E1000_MANC_ARP_EN); | |
440 | ||
441 | /* enable receiving management packets to the host */ | |
442 | /* this will probably generate destination unreachable messages | |
443 | * from the host OS, but the packets will be handled on SMBUS */ | |
444 | if (adapter->hw.has_manc2h) { | |
406874a7 | 445 | u32 manc2h = E1000_READ_REG(&adapter->hw, MANC2H); |
0fccd0e9 JG |
446 | |
447 | manc |= E1000_MANC_EN_MNG2HOST; | |
448 | #define E1000_MNG2HOST_PORT_623 (1 << 5) | |
449 | #define E1000_MNG2HOST_PORT_664 (1 << 6) | |
450 | manc2h |= E1000_MNG2HOST_PORT_623; | |
451 | manc2h |= E1000_MNG2HOST_PORT_664; | |
452 | E1000_WRITE_REG(&adapter->hw, MANC2H, manc2h); | |
453 | } | |
454 | ||
455 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
456 | } | |
457 | } | |
458 | ||
459 | static void | |
460 | e1000_release_manageability(struct e1000_adapter *adapter) | |
461 | { | |
462 | if (adapter->en_mng_pt) { | |
406874a7 | 463 | u32 manc = E1000_READ_REG(&adapter->hw, MANC); |
0fccd0e9 JG |
464 | |
465 | /* re-enable hardware interception of ARP */ | |
466 | manc |= E1000_MANC_ARP_EN; | |
467 | ||
468 | if (adapter->hw.has_manc2h) | |
469 | manc &= ~E1000_MANC_EN_MNG2HOST; | |
470 | ||
471 | /* don't explicitly have to mess with MANC2H since | |
472 | * MANC has an enable disable that gates MANC2H */ | |
473 | ||
474 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
475 | } | |
476 | } | |
477 | ||
e0aac5a2 AK |
478 | /** |
479 | * e1000_configure - configure the hardware for RX and TX | |
480 | * @adapter = private board structure | |
481 | **/ | |
482 | static void e1000_configure(struct e1000_adapter *adapter) | |
1da177e4 LT |
483 | { |
484 | struct net_device *netdev = adapter->netdev; | |
2db10a08 | 485 | int i; |
1da177e4 | 486 | |
db0ce50d | 487 | e1000_set_rx_mode(netdev); |
1da177e4 LT |
488 | |
489 | e1000_restore_vlan(adapter); | |
0fccd0e9 | 490 | e1000_init_manageability(adapter); |
1da177e4 LT |
491 | |
492 | e1000_configure_tx(adapter); | |
493 | e1000_setup_rctl(adapter); | |
494 | e1000_configure_rx(adapter); | |
72d64a43 JK |
495 | /* call E1000_DESC_UNUSED which always leaves |
496 | * at least 1 descriptor unused to make sure | |
497 | * next_to_use != next_to_clean */ | |
f56799ea | 498 | for (i = 0; i < adapter->num_rx_queues; i++) { |
72d64a43 | 499 | struct e1000_rx_ring *ring = &adapter->rx_ring[i]; |
a292ca6e JK |
500 | adapter->alloc_rx_buf(adapter, ring, |
501 | E1000_DESC_UNUSED(ring)); | |
f56799ea | 502 | } |
1da177e4 | 503 | |
7bfa4816 | 504 | adapter->tx_queue_len = netdev->tx_queue_len; |
e0aac5a2 AK |
505 | } |
506 | ||
507 | int e1000_up(struct e1000_adapter *adapter) | |
508 | { | |
509 | /* hardware has been reset, we need to reload some things */ | |
510 | e1000_configure(adapter); | |
511 | ||
512 | clear_bit(__E1000_DOWN, &adapter->flags); | |
7bfa4816 | 513 | |
1da177e4 | 514 | #ifdef CONFIG_E1000_NAPI |
bea3348e | 515 | napi_enable(&adapter->napi); |
1da177e4 | 516 | #endif |
5de55624 MC |
517 | e1000_irq_enable(adapter); |
518 | ||
79f3d399 JB |
519 | /* fire a link change interrupt to start the watchdog */ |
520 | E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_LSC); | |
1da177e4 LT |
521 | return 0; |
522 | } | |
523 | ||
79f05bf0 AK |
524 | /** |
525 | * e1000_power_up_phy - restore link in case the phy was powered down | |
526 | * @adapter: address of board private structure | |
527 | * | |
528 | * The phy may be powered down to save power and turn off link when the | |
529 | * driver is unloaded and wake on lan is not enabled (among others) | |
530 | * *** this routine MUST be followed by a call to e1000_reset *** | |
531 | * | |
532 | **/ | |
533 | ||
d658266e | 534 | void e1000_power_up_phy(struct e1000_adapter *adapter) |
79f05bf0 | 535 | { |
406874a7 | 536 | u16 mii_reg = 0; |
79f05bf0 AK |
537 | |
538 | /* Just clear the power down bit to wake the phy back up */ | |
539 | if (adapter->hw.media_type == e1000_media_type_copper) { | |
540 | /* according to the manual, the phy will retain its | |
541 | * settings across a power-down/up cycle */ | |
542 | e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); | |
543 | mii_reg &= ~MII_CR_POWER_DOWN; | |
544 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg); | |
545 | } | |
546 | } | |
547 | ||
548 | static void e1000_power_down_phy(struct e1000_adapter *adapter) | |
549 | { | |
61c2505f | 550 | /* Power down the PHY so no link is implied when interface is down * |
c3033b01 | 551 | * The PHY cannot be powered down if any of the following is true * |
79f05bf0 AK |
552 | * (a) WoL is enabled |
553 | * (b) AMT is active | |
554 | * (c) SoL/IDER session is active */ | |
555 | if (!adapter->wol && adapter->hw.mac_type >= e1000_82540 && | |
61c2505f | 556 | adapter->hw.media_type == e1000_media_type_copper) { |
406874a7 | 557 | u16 mii_reg = 0; |
61c2505f BA |
558 | |
559 | switch (adapter->hw.mac_type) { | |
560 | case e1000_82540: | |
561 | case e1000_82545: | |
562 | case e1000_82545_rev_3: | |
563 | case e1000_82546: | |
564 | case e1000_82546_rev_3: | |
565 | case e1000_82541: | |
566 | case e1000_82541_rev_2: | |
567 | case e1000_82547: | |
568 | case e1000_82547_rev_2: | |
569 | if (E1000_READ_REG(&adapter->hw, MANC) & | |
570 | E1000_MANC_SMBUS_EN) | |
571 | goto out; | |
572 | break; | |
573 | case e1000_82571: | |
574 | case e1000_82572: | |
575 | case e1000_82573: | |
576 | case e1000_80003es2lan: | |
577 | case e1000_ich8lan: | |
578 | if (e1000_check_mng_mode(&adapter->hw) || | |
579 | e1000_check_phy_reset_block(&adapter->hw)) | |
580 | goto out; | |
581 | break; | |
582 | default: | |
583 | goto out; | |
584 | } | |
79f05bf0 AK |
585 | e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); |
586 | mii_reg |= MII_CR_POWER_DOWN; | |
587 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg); | |
588 | mdelay(1); | |
589 | } | |
61c2505f BA |
590 | out: |
591 | return; | |
79f05bf0 AK |
592 | } |
593 | ||
1da177e4 LT |
594 | void |
595 | e1000_down(struct e1000_adapter *adapter) | |
596 | { | |
597 | struct net_device *netdev = adapter->netdev; | |
598 | ||
1314bbf3 AK |
599 | /* signal that we're down so the interrupt handler does not |
600 | * reschedule our watchdog timer */ | |
601 | set_bit(__E1000_DOWN, &adapter->flags); | |
602 | ||
e0aac5a2 | 603 | #ifdef CONFIG_E1000_NAPI |
bea3348e | 604 | napi_disable(&adapter->napi); |
e0aac5a2 | 605 | #endif |
1da177e4 | 606 | e1000_irq_disable(adapter); |
c1605eb3 | 607 | |
1da177e4 LT |
608 | del_timer_sync(&adapter->tx_fifo_stall_timer); |
609 | del_timer_sync(&adapter->watchdog_timer); | |
610 | del_timer_sync(&adapter->phy_info_timer); | |
611 | ||
7bfa4816 | 612 | netdev->tx_queue_len = adapter->tx_queue_len; |
1da177e4 LT |
613 | adapter->link_speed = 0; |
614 | adapter->link_duplex = 0; | |
615 | netif_carrier_off(netdev); | |
616 | netif_stop_queue(netdev); | |
617 | ||
618 | e1000_reset(adapter); | |
581d708e MC |
619 | e1000_clean_all_tx_rings(adapter); |
620 | e1000_clean_all_rx_rings(adapter); | |
1da177e4 | 621 | } |
1da177e4 | 622 | |
2db10a08 AK |
623 | void |
624 | e1000_reinit_locked(struct e1000_adapter *adapter) | |
625 | { | |
626 | WARN_ON(in_interrupt()); | |
627 | while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) | |
628 | msleep(1); | |
629 | e1000_down(adapter); | |
630 | e1000_up(adapter); | |
631 | clear_bit(__E1000_RESETTING, &adapter->flags); | |
1da177e4 LT |
632 | } |
633 | ||
634 | void | |
635 | e1000_reset(struct e1000_adapter *adapter) | |
636 | { | |
406874a7 JP |
637 | u32 pba = 0, tx_space, min_tx_space, min_rx_space; |
638 | u16 fc_high_water_mark = E1000_FC_HIGH_DIFF; | |
c3033b01 | 639 | bool legacy_pba_adjust = false; |
1da177e4 LT |
640 | |
641 | /* Repartition Pba for greater than 9k mtu | |
642 | * To take effect CTRL.RST is required. | |
643 | */ | |
644 | ||
2d7edb92 | 645 | switch (adapter->hw.mac_type) { |
018ea44e BA |
646 | case e1000_82542_rev2_0: |
647 | case e1000_82542_rev2_1: | |
648 | case e1000_82543: | |
649 | case e1000_82544: | |
650 | case e1000_82540: | |
651 | case e1000_82541: | |
652 | case e1000_82541_rev_2: | |
c3033b01 | 653 | legacy_pba_adjust = true; |
018ea44e BA |
654 | pba = E1000_PBA_48K; |
655 | break; | |
656 | case e1000_82545: | |
657 | case e1000_82545_rev_3: | |
658 | case e1000_82546: | |
659 | case e1000_82546_rev_3: | |
660 | pba = E1000_PBA_48K; | |
661 | break; | |
2d7edb92 | 662 | case e1000_82547: |
0e6ef3e0 | 663 | case e1000_82547_rev_2: |
c3033b01 | 664 | legacy_pba_adjust = true; |
2d7edb92 MC |
665 | pba = E1000_PBA_30K; |
666 | break; | |
868d5309 MC |
667 | case e1000_82571: |
668 | case e1000_82572: | |
6418ecc6 | 669 | case e1000_80003es2lan: |
868d5309 MC |
670 | pba = E1000_PBA_38K; |
671 | break; | |
2d7edb92 | 672 | case e1000_82573: |
018ea44e | 673 | pba = E1000_PBA_20K; |
2d7edb92 | 674 | break; |
cd94dd0b AK |
675 | case e1000_ich8lan: |
676 | pba = E1000_PBA_8K; | |
018ea44e BA |
677 | case e1000_undefined: |
678 | case e1000_num_macs: | |
2d7edb92 MC |
679 | break; |
680 | } | |
681 | ||
c3033b01 | 682 | if (legacy_pba_adjust) { |
018ea44e BA |
683 | if (adapter->netdev->mtu > E1000_RXBUFFER_8192) |
684 | pba -= 8; /* allocate more FIFO for Tx */ | |
2d7edb92 | 685 | |
018ea44e BA |
686 | if (adapter->hw.mac_type == e1000_82547) { |
687 | adapter->tx_fifo_head = 0; | |
688 | adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; | |
689 | adapter->tx_fifo_size = | |
690 | (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; | |
691 | atomic_set(&adapter->tx_fifo_stall, 0); | |
692 | } | |
693 | } else if (adapter->hw.max_frame_size > MAXIMUM_ETHERNET_FRAME_SIZE) { | |
694 | /* adjust PBA for jumbo frames */ | |
695 | E1000_WRITE_REG(&adapter->hw, PBA, pba); | |
696 | ||
697 | /* To maintain wire speed transmits, the Tx FIFO should be | |
698 | * large enough to accomodate two full transmit packets, | |
699 | * rounded up to the next 1KB and expressed in KB. Likewise, | |
700 | * the Rx FIFO should be large enough to accomodate at least | |
701 | * one full receive packet and is similarly rounded up and | |
702 | * expressed in KB. */ | |
703 | pba = E1000_READ_REG(&adapter->hw, PBA); | |
704 | /* upper 16 bits has Tx packet buffer allocation size in KB */ | |
705 | tx_space = pba >> 16; | |
706 | /* lower 16 bits has Rx packet buffer allocation size in KB */ | |
707 | pba &= 0xffff; | |
708 | /* don't include ethernet FCS because hardware appends/strips */ | |
709 | min_rx_space = adapter->netdev->mtu + ENET_HEADER_SIZE + | |
710 | VLAN_TAG_SIZE; | |
711 | min_tx_space = min_rx_space; | |
712 | min_tx_space *= 2; | |
9099cfb9 | 713 | min_tx_space = ALIGN(min_tx_space, 1024); |
018ea44e | 714 | min_tx_space >>= 10; |
9099cfb9 | 715 | min_rx_space = ALIGN(min_rx_space, 1024); |
018ea44e BA |
716 | min_rx_space >>= 10; |
717 | ||
718 | /* If current Tx allocation is less than the min Tx FIFO size, | |
719 | * and the min Tx FIFO size is less than the current Rx FIFO | |
720 | * allocation, take space away from current Rx allocation */ | |
721 | if (tx_space < min_tx_space && | |
722 | ((min_tx_space - tx_space) < pba)) { | |
723 | pba = pba - (min_tx_space - tx_space); | |
724 | ||
725 | /* PCI/PCIx hardware has PBA alignment constraints */ | |
726 | switch (adapter->hw.mac_type) { | |
727 | case e1000_82545 ... e1000_82546_rev_3: | |
728 | pba &= ~(E1000_PBA_8K - 1); | |
729 | break; | |
730 | default: | |
731 | break; | |
732 | } | |
733 | ||
734 | /* if short on rx space, rx wins and must trump tx | |
735 | * adjustment or use Early Receive if available */ | |
736 | if (pba < min_rx_space) { | |
737 | switch (adapter->hw.mac_type) { | |
738 | case e1000_82573: | |
739 | /* ERT enabled in e1000_configure_rx */ | |
740 | break; | |
741 | default: | |
742 | pba = min_rx_space; | |
743 | break; | |
744 | } | |
745 | } | |
746 | } | |
1da177e4 | 747 | } |
2d7edb92 | 748 | |
1da177e4 LT |
749 | E1000_WRITE_REG(&adapter->hw, PBA, pba); |
750 | ||
751 | /* flow control settings */ | |
f11b7f85 JK |
752 | /* Set the FC high water mark to 90% of the FIFO size. |
753 | * Required to clear last 3 LSB */ | |
754 | fc_high_water_mark = ((pba * 9216)/10) & 0xFFF8; | |
cd94dd0b AK |
755 | /* We can't use 90% on small FIFOs because the remainder |
756 | * would be less than 1 full frame. In this case, we size | |
757 | * it to allow at least a full frame above the high water | |
758 | * mark. */ | |
759 | if (pba < E1000_PBA_16K) | |
760 | fc_high_water_mark = (pba * 1024) - 1600; | |
f11b7f85 JK |
761 | |
762 | adapter->hw.fc_high_water = fc_high_water_mark; | |
763 | adapter->hw.fc_low_water = fc_high_water_mark - 8; | |
87041639 JK |
764 | if (adapter->hw.mac_type == e1000_80003es2lan) |
765 | adapter->hw.fc_pause_time = 0xFFFF; | |
766 | else | |
767 | adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME; | |
1da177e4 LT |
768 | adapter->hw.fc_send_xon = 1; |
769 | adapter->hw.fc = adapter->hw.original_fc; | |
770 | ||
2d7edb92 | 771 | /* Allow time for pending master requests to run */ |
1da177e4 | 772 | e1000_reset_hw(&adapter->hw); |
96838a40 | 773 | if (adapter->hw.mac_type >= e1000_82544) |
1da177e4 | 774 | E1000_WRITE_REG(&adapter->hw, WUC, 0); |
09ae3e88 | 775 | |
96838a40 | 776 | if (e1000_init_hw(&adapter->hw)) |
1da177e4 | 777 | DPRINTK(PROBE, ERR, "Hardware Error\n"); |
2d7edb92 | 778 | e1000_update_mng_vlan(adapter); |
3d5460a0 JB |
779 | |
780 | /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */ | |
781 | if (adapter->hw.mac_type >= e1000_82544 && | |
782 | adapter->hw.mac_type <= e1000_82547_rev_2 && | |
783 | adapter->hw.autoneg == 1 && | |
784 | adapter->hw.autoneg_advertised == ADVERTISE_1000_FULL) { | |
406874a7 | 785 | u32 ctrl = E1000_READ_REG(&adapter->hw, CTRL); |
3d5460a0 JB |
786 | /* clear phy power management bit if we are in gig only mode, |
787 | * which if enabled will attempt negotiation to 100Mb, which | |
788 | * can cause a loss of link at power off or driver unload */ | |
789 | ctrl &= ~E1000_CTRL_SWDPIN3; | |
790 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
791 | } | |
792 | ||
1da177e4 LT |
793 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
794 | E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE); | |
795 | ||
796 | e1000_reset_adaptive(&adapter->hw); | |
797 | e1000_phy_get_info(&adapter->hw, &adapter->phy_info); | |
9a53a202 AK |
798 | |
799 | if (!adapter->smart_power_down && | |
800 | (adapter->hw.mac_type == e1000_82571 || | |
801 | adapter->hw.mac_type == e1000_82572)) { | |
406874a7 | 802 | u16 phy_data = 0; |
9a53a202 AK |
803 | /* speed up time to link by disabling smart power down, ignore |
804 | * the return value of this function because there is nothing | |
805 | * different we would do if it failed */ | |
806 | e1000_read_phy_reg(&adapter->hw, IGP02E1000_PHY_POWER_MGMT, | |
807 | &phy_data); | |
808 | phy_data &= ~IGP02E1000_PM_SPD; | |
809 | e1000_write_phy_reg(&adapter->hw, IGP02E1000_PHY_POWER_MGMT, | |
810 | phy_data); | |
811 | } | |
812 | ||
0fccd0e9 | 813 | e1000_release_manageability(adapter); |
1da177e4 LT |
814 | } |
815 | ||
67b3c27c AK |
816 | /** |
817 | * Dump the eeprom for users having checksum issues | |
818 | **/ | |
b4ea895d | 819 | static void e1000_dump_eeprom(struct e1000_adapter *adapter) |
67b3c27c AK |
820 | { |
821 | struct net_device *netdev = adapter->netdev; | |
822 | struct ethtool_eeprom eeprom; | |
823 | const struct ethtool_ops *ops = netdev->ethtool_ops; | |
824 | u8 *data; | |
825 | int i; | |
826 | u16 csum_old, csum_new = 0; | |
827 | ||
828 | eeprom.len = ops->get_eeprom_len(netdev); | |
829 | eeprom.offset = 0; | |
830 | ||
831 | data = kmalloc(eeprom.len, GFP_KERNEL); | |
832 | if (!data) { | |
833 | printk(KERN_ERR "Unable to allocate memory to dump EEPROM" | |
834 | " data\n"); | |
835 | return; | |
836 | } | |
837 | ||
838 | ops->get_eeprom(netdev, &eeprom, data); | |
839 | ||
840 | csum_old = (data[EEPROM_CHECKSUM_REG * 2]) + | |
841 | (data[EEPROM_CHECKSUM_REG * 2 + 1] << 8); | |
842 | for (i = 0; i < EEPROM_CHECKSUM_REG * 2; i += 2) | |
843 | csum_new += data[i] + (data[i + 1] << 8); | |
844 | csum_new = EEPROM_SUM - csum_new; | |
845 | ||
846 | printk(KERN_ERR "/*********************/\n"); | |
847 | printk(KERN_ERR "Current EEPROM Checksum : 0x%04x\n", csum_old); | |
848 | printk(KERN_ERR "Calculated : 0x%04x\n", csum_new); | |
849 | ||
850 | printk(KERN_ERR "Offset Values\n"); | |
851 | printk(KERN_ERR "======== ======\n"); | |
852 | print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, data, 128, 0); | |
853 | ||
854 | printk(KERN_ERR "Include this output when contacting your support " | |
855 | "provider.\n"); | |
856 | printk(KERN_ERR "This is not a software error! Something bad " | |
857 | "happened to your hardware or\n"); | |
858 | printk(KERN_ERR "EEPROM image. Ignoring this " | |
859 | "problem could result in further problems,\n"); | |
860 | printk(KERN_ERR "possibly loss of data, corruption or system hangs!\n"); | |
861 | printk(KERN_ERR "The MAC Address will be reset to 00:00:00:00:00:00, " | |
862 | "which is invalid\n"); | |
863 | printk(KERN_ERR "and requires you to set the proper MAC " | |
864 | "address manually before continuing\n"); | |
865 | printk(KERN_ERR "to enable this network device.\n"); | |
866 | printk(KERN_ERR "Please inspect the EEPROM dump and report the issue " | |
867 | "to your hardware vendor\n"); | |
868 | printk(KERN_ERR "or Intel Customer Support: linux-nics@intel.com\n"); | |
869 | printk(KERN_ERR "/*********************/\n"); | |
870 | ||
871 | kfree(data); | |
872 | } | |
873 | ||
1da177e4 LT |
874 | /** |
875 | * e1000_probe - Device Initialization Routine | |
876 | * @pdev: PCI device information struct | |
877 | * @ent: entry in e1000_pci_tbl | |
878 | * | |
879 | * Returns 0 on success, negative on failure | |
880 | * | |
881 | * e1000_probe initializes an adapter identified by a pci_dev structure. | |
882 | * The OS initialization, configuring of the adapter private structure, | |
883 | * and a hardware reset occur. | |
884 | **/ | |
885 | ||
886 | static int __devinit | |
887 | e1000_probe(struct pci_dev *pdev, | |
888 | const struct pci_device_id *ent) | |
889 | { | |
890 | struct net_device *netdev; | |
891 | struct e1000_adapter *adapter; | |
2d7edb92 | 892 | |
1da177e4 | 893 | static int cards_found = 0; |
120cd576 | 894 | static int global_quad_port_a = 0; /* global ksp3 port a indication */ |
2d7edb92 | 895 | int i, err, pci_using_dac; |
406874a7 JP |
896 | u16 eeprom_data = 0; |
897 | u16 eeprom_apme_mask = E1000_EEPROM_APME; | |
0795af57 JP |
898 | DECLARE_MAC_BUF(mac); |
899 | ||
96838a40 | 900 | if ((err = pci_enable_device(pdev))) |
1da177e4 LT |
901 | return err; |
902 | ||
cd94dd0b AK |
903 | if (!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK)) && |
904 | !(err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))) { | |
1da177e4 LT |
905 | pci_using_dac = 1; |
906 | } else { | |
cd94dd0b AK |
907 | if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) && |
908 | (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) { | |
1da177e4 | 909 | E1000_ERR("No usable DMA configuration, aborting\n"); |
6dd62ab0 | 910 | goto err_dma; |
1da177e4 LT |
911 | } |
912 | pci_using_dac = 0; | |
913 | } | |
914 | ||
96838a40 | 915 | if ((err = pci_request_regions(pdev, e1000_driver_name))) |
6dd62ab0 | 916 | goto err_pci_reg; |
1da177e4 LT |
917 | |
918 | pci_set_master(pdev); | |
919 | ||
6dd62ab0 | 920 | err = -ENOMEM; |
1da177e4 | 921 | netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
6dd62ab0 | 922 | if (!netdev) |
1da177e4 | 923 | goto err_alloc_etherdev; |
1da177e4 | 924 | |
1da177e4 LT |
925 | SET_NETDEV_DEV(netdev, &pdev->dev); |
926 | ||
927 | pci_set_drvdata(pdev, netdev); | |
60490fe0 | 928 | adapter = netdev_priv(netdev); |
1da177e4 LT |
929 | adapter->netdev = netdev; |
930 | adapter->pdev = pdev; | |
931 | adapter->hw.back = adapter; | |
932 | adapter->msg_enable = (1 << debug) - 1; | |
933 | ||
6dd62ab0 | 934 | err = -EIO; |
3c34ac36 BH |
935 | adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, BAR_0), |
936 | pci_resource_len(pdev, BAR_0)); | |
6dd62ab0 | 937 | if (!adapter->hw.hw_addr) |
1da177e4 | 938 | goto err_ioremap; |
1da177e4 | 939 | |
96838a40 JB |
940 | for (i = BAR_1; i <= BAR_5; i++) { |
941 | if (pci_resource_len(pdev, i) == 0) | |
1da177e4 | 942 | continue; |
96838a40 | 943 | if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { |
1da177e4 LT |
944 | adapter->hw.io_base = pci_resource_start(pdev, i); |
945 | break; | |
946 | } | |
947 | } | |
948 | ||
949 | netdev->open = &e1000_open; | |
950 | netdev->stop = &e1000_close; | |
951 | netdev->hard_start_xmit = &e1000_xmit_frame; | |
952 | netdev->get_stats = &e1000_get_stats; | |
db0ce50d | 953 | netdev->set_rx_mode = &e1000_set_rx_mode; |
1da177e4 LT |
954 | netdev->set_mac_address = &e1000_set_mac; |
955 | netdev->change_mtu = &e1000_change_mtu; | |
956 | netdev->do_ioctl = &e1000_ioctl; | |
957 | e1000_set_ethtool_ops(netdev); | |
958 | netdev->tx_timeout = &e1000_tx_timeout; | |
959 | netdev->watchdog_timeo = 5 * HZ; | |
960 | #ifdef CONFIG_E1000_NAPI | |
bea3348e | 961 | netif_napi_add(netdev, &adapter->napi, e1000_clean, 64); |
1da177e4 LT |
962 | #endif |
963 | netdev->vlan_rx_register = e1000_vlan_rx_register; | |
964 | netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid; | |
965 | netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid; | |
966 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
967 | netdev->poll_controller = e1000_netpoll; | |
968 | #endif | |
0eb5a34c | 969 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
1da177e4 | 970 | |
1da177e4 LT |
971 | adapter->bd_number = cards_found; |
972 | ||
973 | /* setup the private structure */ | |
974 | ||
96838a40 | 975 | if ((err = e1000_sw_init(adapter))) |
1da177e4 LT |
976 | goto err_sw_init; |
977 | ||
6dd62ab0 | 978 | err = -EIO; |
cd94dd0b AK |
979 | /* Flash BAR mapping must happen after e1000_sw_init |
980 | * because it depends on mac_type */ | |
981 | if ((adapter->hw.mac_type == e1000_ich8lan) && | |
982 | (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) { | |
3c34ac36 BH |
983 | adapter->hw.flash_address = |
984 | ioremap(pci_resource_start(pdev, 1), | |
985 | pci_resource_len(pdev, 1)); | |
6dd62ab0 | 986 | if (!adapter->hw.flash_address) |
cd94dd0b | 987 | goto err_flashmap; |
cd94dd0b AK |
988 | } |
989 | ||
6dd62ab0 | 990 | if (e1000_check_phy_reset_block(&adapter->hw)) |
2d7edb92 MC |
991 | DPRINTK(PROBE, INFO, "PHY reset is blocked due to SOL/IDER session.\n"); |
992 | ||
96838a40 | 993 | if (adapter->hw.mac_type >= e1000_82543) { |
1da177e4 LT |
994 | netdev->features = NETIF_F_SG | |
995 | NETIF_F_HW_CSUM | | |
996 | NETIF_F_HW_VLAN_TX | | |
997 | NETIF_F_HW_VLAN_RX | | |
998 | NETIF_F_HW_VLAN_FILTER; | |
cd94dd0b AK |
999 | if (adapter->hw.mac_type == e1000_ich8lan) |
1000 | netdev->features &= ~NETIF_F_HW_VLAN_FILTER; | |
1da177e4 LT |
1001 | } |
1002 | ||
96838a40 | 1003 | if ((adapter->hw.mac_type >= e1000_82544) && |
1da177e4 LT |
1004 | (adapter->hw.mac_type != e1000_82547)) |
1005 | netdev->features |= NETIF_F_TSO; | |
2d7edb92 | 1006 | |
96838a40 | 1007 | if (adapter->hw.mac_type > e1000_82547_rev_2) |
87ca4e5b | 1008 | netdev->features |= NETIF_F_TSO6; |
96838a40 | 1009 | if (pci_using_dac) |
1da177e4 LT |
1010 | netdev->features |= NETIF_F_HIGHDMA; |
1011 | ||
76c224bc AK |
1012 | netdev->features |= NETIF_F_LLTX; |
1013 | ||
2d7edb92 MC |
1014 | adapter->en_mng_pt = e1000_enable_mng_pass_thru(&adapter->hw); |
1015 | ||
cd94dd0b | 1016 | /* initialize eeprom parameters */ |
cd94dd0b AK |
1017 | if (e1000_init_eeprom_params(&adapter->hw)) { |
1018 | E1000_ERR("EEPROM initialization failed\n"); | |
6dd62ab0 | 1019 | goto err_eeprom; |
cd94dd0b AK |
1020 | } |
1021 | ||
96838a40 | 1022 | /* before reading the EEPROM, reset the controller to |
1da177e4 | 1023 | * put the device in a known good starting state */ |
96838a40 | 1024 | |
1da177e4 LT |
1025 | e1000_reset_hw(&adapter->hw); |
1026 | ||
1027 | /* make sure the EEPROM is good */ | |
96838a40 | 1028 | if (e1000_validate_eeprom_checksum(&adapter->hw) < 0) { |
1da177e4 | 1029 | DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n"); |
67b3c27c AK |
1030 | e1000_dump_eeprom(adapter); |
1031 | /* | |
1032 | * set MAC address to all zeroes to invalidate and temporary | |
1033 | * disable this device for the user. This blocks regular | |
1034 | * traffic while still permitting ethtool ioctls from reaching | |
1035 | * the hardware as well as allowing the user to run the | |
1036 | * interface after manually setting a hw addr using | |
1037 | * `ip set address` | |
1038 | */ | |
1039 | memset(adapter->hw.mac_addr, 0, netdev->addr_len); | |
1040 | } else { | |
1041 | /* copy the MAC address out of the EEPROM */ | |
1042 | if (e1000_read_mac_addr(&adapter->hw)) | |
1043 | DPRINTK(PROBE, ERR, "EEPROM Read Error\n"); | |
1da177e4 | 1044 | } |
67b3c27c | 1045 | /* don't block initalization here due to bad MAC address */ |
1da177e4 | 1046 | memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); |
9beb0ac1 | 1047 | memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len); |
1da177e4 | 1048 | |
67b3c27c | 1049 | if (!is_valid_ether_addr(netdev->perm_addr)) |
1da177e4 | 1050 | DPRINTK(PROBE, ERR, "Invalid MAC Address\n"); |
1da177e4 | 1051 | |
1da177e4 LT |
1052 | e1000_get_bus_info(&adapter->hw); |
1053 | ||
1054 | init_timer(&adapter->tx_fifo_stall_timer); | |
1055 | adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall; | |
1056 | adapter->tx_fifo_stall_timer.data = (unsigned long) adapter; | |
1057 | ||
1058 | init_timer(&adapter->watchdog_timer); | |
1059 | adapter->watchdog_timer.function = &e1000_watchdog; | |
1060 | adapter->watchdog_timer.data = (unsigned long) adapter; | |
1061 | ||
1da177e4 LT |
1062 | init_timer(&adapter->phy_info_timer); |
1063 | adapter->phy_info_timer.function = &e1000_update_phy_info; | |
1064 | adapter->phy_info_timer.data = (unsigned long) adapter; | |
1065 | ||
65f27f38 | 1066 | INIT_WORK(&adapter->reset_task, e1000_reset_task); |
1da177e4 | 1067 | |
1da177e4 LT |
1068 | e1000_check_options(adapter); |
1069 | ||
1070 | /* Initial Wake on LAN setting | |
1071 | * If APM wake is enabled in the EEPROM, | |
1072 | * enable the ACPI Magic Packet filter | |
1073 | */ | |
1074 | ||
96838a40 | 1075 | switch (adapter->hw.mac_type) { |
1da177e4 LT |
1076 | case e1000_82542_rev2_0: |
1077 | case e1000_82542_rev2_1: | |
1078 | case e1000_82543: | |
1079 | break; | |
1080 | case e1000_82544: | |
1081 | e1000_read_eeprom(&adapter->hw, | |
1082 | EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); | |
1083 | eeprom_apme_mask = E1000_EEPROM_82544_APM; | |
1084 | break; | |
cd94dd0b AK |
1085 | case e1000_ich8lan: |
1086 | e1000_read_eeprom(&adapter->hw, | |
1087 | EEPROM_INIT_CONTROL1_REG, 1, &eeprom_data); | |
1088 | eeprom_apme_mask = E1000_EEPROM_ICH8_APME; | |
1089 | break; | |
1da177e4 LT |
1090 | case e1000_82546: |
1091 | case e1000_82546_rev_3: | |
fd803241 | 1092 | case e1000_82571: |
6418ecc6 | 1093 | case e1000_80003es2lan: |
96838a40 | 1094 | if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1){ |
1da177e4 LT |
1095 | e1000_read_eeprom(&adapter->hw, |
1096 | EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); | |
1097 | break; | |
1098 | } | |
1099 | /* Fall Through */ | |
1100 | default: | |
1101 | e1000_read_eeprom(&adapter->hw, | |
1102 | EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); | |
1103 | break; | |
1104 | } | |
96838a40 | 1105 | if (eeprom_data & eeprom_apme_mask) |
120cd576 JB |
1106 | adapter->eeprom_wol |= E1000_WUFC_MAG; |
1107 | ||
1108 | /* now that we have the eeprom settings, apply the special cases | |
1109 | * where the eeprom may be wrong or the board simply won't support | |
1110 | * wake on lan on a particular port */ | |
1111 | switch (pdev->device) { | |
1112 | case E1000_DEV_ID_82546GB_PCIE: | |
1113 | adapter->eeprom_wol = 0; | |
1114 | break; | |
1115 | case E1000_DEV_ID_82546EB_FIBER: | |
1116 | case E1000_DEV_ID_82546GB_FIBER: | |
1117 | case E1000_DEV_ID_82571EB_FIBER: | |
1118 | /* Wake events only supported on port A for dual fiber | |
1119 | * regardless of eeprom setting */ | |
1120 | if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1) | |
1121 | adapter->eeprom_wol = 0; | |
1122 | break; | |
1123 | case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3: | |
5881cde8 | 1124 | case E1000_DEV_ID_82571EB_QUAD_COPPER: |
ce57a02c | 1125 | case E1000_DEV_ID_82571EB_QUAD_FIBER: |
fc2307d0 | 1126 | case E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE: |
f4ec7f98 | 1127 | case E1000_DEV_ID_82571PT_QUAD_COPPER: |
120cd576 JB |
1128 | /* if quad port adapter, disable WoL on all but port A */ |
1129 | if (global_quad_port_a != 0) | |
1130 | adapter->eeprom_wol = 0; | |
1131 | else | |
1132 | adapter->quad_port_a = 1; | |
1133 | /* Reset for multiple quad port adapters */ | |
1134 | if (++global_quad_port_a == 4) | |
1135 | global_quad_port_a = 0; | |
1136 | break; | |
1137 | } | |
1138 | ||
1139 | /* initialize the wol settings based on the eeprom settings */ | |
1140 | adapter->wol = adapter->eeprom_wol; | |
1da177e4 | 1141 | |
fb3d47d4 JK |
1142 | /* print bus type/speed/width info */ |
1143 | { | |
1144 | struct e1000_hw *hw = &adapter->hw; | |
1145 | DPRINTK(PROBE, INFO, "(PCI%s:%s:%s) ", | |
1146 | ((hw->bus_type == e1000_bus_type_pcix) ? "-X" : | |
1147 | (hw->bus_type == e1000_bus_type_pci_express ? " Express":"")), | |
1148 | ((hw->bus_speed == e1000_bus_speed_2500) ? "2.5Gb/s" : | |
1149 | (hw->bus_speed == e1000_bus_speed_133) ? "133MHz" : | |
1150 | (hw->bus_speed == e1000_bus_speed_120) ? "120MHz" : | |
1151 | (hw->bus_speed == e1000_bus_speed_100) ? "100MHz" : | |
1152 | (hw->bus_speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"), | |
1153 | ((hw->bus_width == e1000_bus_width_64) ? "64-bit" : | |
1154 | (hw->bus_width == e1000_bus_width_pciex_4) ? "Width x4" : | |
1155 | (hw->bus_width == e1000_bus_width_pciex_1) ? "Width x1" : | |
1156 | "32-bit")); | |
1157 | } | |
1158 | ||
0795af57 | 1159 | printk("%s\n", print_mac(mac, netdev->dev_addr)); |
fb3d47d4 | 1160 | |
14782ca8 AK |
1161 | if (adapter->hw.bus_type == e1000_bus_type_pci_express) { |
1162 | DPRINTK(PROBE, WARNING, "This device (id %04x:%04x) will no " | |
1163 | "longer be supported by this driver in the future.\n", | |
1164 | pdev->vendor, pdev->device); | |
1165 | DPRINTK(PROBE, WARNING, "please use the \"e1000e\" " | |
1166 | "driver instead.\n"); | |
1167 | } | |
1168 | ||
1da177e4 LT |
1169 | /* reset the hardware with the new settings */ |
1170 | e1000_reset(adapter); | |
1171 | ||
b55ccb35 JK |
1172 | /* If the controller is 82573 and f/w is AMT, do not set |
1173 | * DRV_LOAD until the interface is up. For all other cases, | |
1174 | * let the f/w know that the h/w is now under the control | |
1175 | * of the driver. */ | |
1176 | if (adapter->hw.mac_type != e1000_82573 || | |
1177 | !e1000_check_mng_mode(&adapter->hw)) | |
1178 | e1000_get_hw_control(adapter); | |
2d7edb92 | 1179 | |
1314bbf3 AK |
1180 | /* tell the stack to leave us alone until e1000_open() is called */ |
1181 | netif_carrier_off(netdev); | |
1182 | netif_stop_queue(netdev); | |
416b5d10 AK |
1183 | |
1184 | strcpy(netdev->name, "eth%d"); | |
1185 | if ((err = register_netdev(netdev))) | |
1186 | goto err_register; | |
1314bbf3 | 1187 | |
1da177e4 LT |
1188 | DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n"); |
1189 | ||
1190 | cards_found++; | |
1191 | return 0; | |
1192 | ||
1193 | err_register: | |
6dd62ab0 VA |
1194 | e1000_release_hw_control(adapter); |
1195 | err_eeprom: | |
1196 | if (!e1000_check_phy_reset_block(&adapter->hw)) | |
1197 | e1000_phy_hw_reset(&adapter->hw); | |
1198 | ||
cd94dd0b AK |
1199 | if (adapter->hw.flash_address) |
1200 | iounmap(adapter->hw.flash_address); | |
1201 | err_flashmap: | |
6dd62ab0 VA |
1202 | #ifdef CONFIG_E1000_NAPI |
1203 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1204 | dev_put(&adapter->polling_netdev[i]); | |
1205 | #endif | |
1206 | ||
1207 | kfree(adapter->tx_ring); | |
1208 | kfree(adapter->rx_ring); | |
1209 | #ifdef CONFIG_E1000_NAPI | |
1210 | kfree(adapter->polling_netdev); | |
1211 | #endif | |
1da177e4 | 1212 | err_sw_init: |
1da177e4 LT |
1213 | iounmap(adapter->hw.hw_addr); |
1214 | err_ioremap: | |
1215 | free_netdev(netdev); | |
1216 | err_alloc_etherdev: | |
1217 | pci_release_regions(pdev); | |
6dd62ab0 VA |
1218 | err_pci_reg: |
1219 | err_dma: | |
1220 | pci_disable_device(pdev); | |
1da177e4 LT |
1221 | return err; |
1222 | } | |
1223 | ||
1224 | /** | |
1225 | * e1000_remove - Device Removal Routine | |
1226 | * @pdev: PCI device information struct | |
1227 | * | |
1228 | * e1000_remove is called by the PCI subsystem to alert the driver | |
1229 | * that it should release a PCI device. The could be caused by a | |
1230 | * Hot-Plug event, or because the driver is going to be removed from | |
1231 | * memory. | |
1232 | **/ | |
1233 | ||
1234 | static void __devexit | |
1235 | e1000_remove(struct pci_dev *pdev) | |
1236 | { | |
1237 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 1238 | struct e1000_adapter *adapter = netdev_priv(netdev); |
581d708e MC |
1239 | #ifdef CONFIG_E1000_NAPI |
1240 | int i; | |
1241 | #endif | |
1da177e4 | 1242 | |
28e53bdd | 1243 | cancel_work_sync(&adapter->reset_task); |
be2b28ed | 1244 | |
0fccd0e9 | 1245 | e1000_release_manageability(adapter); |
1da177e4 | 1246 | |
b55ccb35 JK |
1247 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
1248 | * would have already happened in close and is redundant. */ | |
1249 | e1000_release_hw_control(adapter); | |
2d7edb92 | 1250 | |
581d708e | 1251 | #ifdef CONFIG_E1000_NAPI |
f56799ea | 1252 | for (i = 0; i < adapter->num_rx_queues; i++) |
15333061 | 1253 | dev_put(&adapter->polling_netdev[i]); |
581d708e | 1254 | #endif |
1da177e4 | 1255 | |
bea3348e SH |
1256 | unregister_netdev(netdev); |
1257 | ||
96838a40 | 1258 | if (!e1000_check_phy_reset_block(&adapter->hw)) |
2d7edb92 | 1259 | e1000_phy_hw_reset(&adapter->hw); |
1da177e4 | 1260 | |
24025e4e MC |
1261 | kfree(adapter->tx_ring); |
1262 | kfree(adapter->rx_ring); | |
1263 | #ifdef CONFIG_E1000_NAPI | |
1264 | kfree(adapter->polling_netdev); | |
1265 | #endif | |
1266 | ||
1da177e4 | 1267 | iounmap(adapter->hw.hw_addr); |
cd94dd0b AK |
1268 | if (adapter->hw.flash_address) |
1269 | iounmap(adapter->hw.flash_address); | |
1da177e4 LT |
1270 | pci_release_regions(pdev); |
1271 | ||
1272 | free_netdev(netdev); | |
1273 | ||
1274 | pci_disable_device(pdev); | |
1275 | } | |
1276 | ||
1277 | /** | |
1278 | * e1000_sw_init - Initialize general software structures (struct e1000_adapter) | |
1279 | * @adapter: board private structure to initialize | |
1280 | * | |
1281 | * e1000_sw_init initializes the Adapter private data structure. | |
1282 | * Fields are initialized based on PCI device information and | |
1283 | * OS network device settings (MTU size). | |
1284 | **/ | |
1285 | ||
1286 | static int __devinit | |
1287 | e1000_sw_init(struct e1000_adapter *adapter) | |
1288 | { | |
1289 | struct e1000_hw *hw = &adapter->hw; | |
1290 | struct net_device *netdev = adapter->netdev; | |
1291 | struct pci_dev *pdev = adapter->pdev; | |
581d708e MC |
1292 | #ifdef CONFIG_E1000_NAPI |
1293 | int i; | |
1294 | #endif | |
1da177e4 LT |
1295 | |
1296 | /* PCI config space info */ | |
1297 | ||
1298 | hw->vendor_id = pdev->vendor; | |
1299 | hw->device_id = pdev->device; | |
1300 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
1301 | hw->subsystem_id = pdev->subsystem_device; | |
44c10138 | 1302 | hw->revision_id = pdev->revision; |
1da177e4 LT |
1303 | |
1304 | pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); | |
1305 | ||
eb0f8054 | 1306 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
9e2feace | 1307 | adapter->rx_ps_bsize0 = E1000_RXBUFFER_128; |
1da177e4 LT |
1308 | hw->max_frame_size = netdev->mtu + |
1309 | ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; | |
1310 | hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; | |
1311 | ||
1312 | /* identify the MAC */ | |
1313 | ||
96838a40 | 1314 | if (e1000_set_mac_type(hw)) { |
1da177e4 LT |
1315 | DPRINTK(PROBE, ERR, "Unknown MAC Type\n"); |
1316 | return -EIO; | |
1317 | } | |
1318 | ||
96838a40 | 1319 | switch (hw->mac_type) { |
1da177e4 LT |
1320 | default: |
1321 | break; | |
1322 | case e1000_82541: | |
1323 | case e1000_82547: | |
1324 | case e1000_82541_rev_2: | |
1325 | case e1000_82547_rev_2: | |
1326 | hw->phy_init_script = 1; | |
1327 | break; | |
1328 | } | |
1329 | ||
1330 | e1000_set_media_type(hw); | |
1331 | ||
c3033b01 JP |
1332 | hw->wait_autoneg_complete = false; |
1333 | hw->tbi_compatibility_en = true; | |
1334 | hw->adaptive_ifs = true; | |
1da177e4 LT |
1335 | |
1336 | /* Copper options */ | |
1337 | ||
96838a40 | 1338 | if (hw->media_type == e1000_media_type_copper) { |
1da177e4 | 1339 | hw->mdix = AUTO_ALL_MODES; |
c3033b01 | 1340 | hw->disable_polarity_correction = false; |
1da177e4 LT |
1341 | hw->master_slave = E1000_MASTER_SLAVE; |
1342 | } | |
1343 | ||
f56799ea JK |
1344 | adapter->num_tx_queues = 1; |
1345 | adapter->num_rx_queues = 1; | |
581d708e MC |
1346 | |
1347 | if (e1000_alloc_queues(adapter)) { | |
1348 | DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n"); | |
1349 | return -ENOMEM; | |
1350 | } | |
1351 | ||
1352 | #ifdef CONFIG_E1000_NAPI | |
f56799ea | 1353 | for (i = 0; i < adapter->num_rx_queues; i++) { |
581d708e | 1354 | adapter->polling_netdev[i].priv = adapter; |
581d708e MC |
1355 | dev_hold(&adapter->polling_netdev[i]); |
1356 | set_bit(__LINK_STATE_START, &adapter->polling_netdev[i].state); | |
1357 | } | |
7bfa4816 | 1358 | spin_lock_init(&adapter->tx_queue_lock); |
24025e4e MC |
1359 | #endif |
1360 | ||
47313054 | 1361 | /* Explicitly disable IRQ since the NIC can be in any state. */ |
47313054 HX |
1362 | e1000_irq_disable(adapter); |
1363 | ||
1da177e4 | 1364 | spin_lock_init(&adapter->stats_lock); |
1da177e4 | 1365 | |
1314bbf3 AK |
1366 | set_bit(__E1000_DOWN, &adapter->flags); |
1367 | ||
1da177e4 LT |
1368 | return 0; |
1369 | } | |
1370 | ||
581d708e MC |
1371 | /** |
1372 | * e1000_alloc_queues - Allocate memory for all rings | |
1373 | * @adapter: board private structure to initialize | |
1374 | * | |
1375 | * We allocate one ring per queue at run-time since we don't know the | |
1376 | * number of queues at compile-time. The polling_netdev array is | |
1377 | * intended for Multiqueue, but should work fine with a single queue. | |
1378 | **/ | |
1379 | ||
1380 | static int __devinit | |
1381 | e1000_alloc_queues(struct e1000_adapter *adapter) | |
1382 | { | |
1c7e5b12 YB |
1383 | adapter->tx_ring = kcalloc(adapter->num_tx_queues, |
1384 | sizeof(struct e1000_tx_ring), GFP_KERNEL); | |
581d708e MC |
1385 | if (!adapter->tx_ring) |
1386 | return -ENOMEM; | |
581d708e | 1387 | |
1c7e5b12 YB |
1388 | adapter->rx_ring = kcalloc(adapter->num_rx_queues, |
1389 | sizeof(struct e1000_rx_ring), GFP_KERNEL); | |
581d708e MC |
1390 | if (!adapter->rx_ring) { |
1391 | kfree(adapter->tx_ring); | |
1392 | return -ENOMEM; | |
1393 | } | |
581d708e MC |
1394 | |
1395 | #ifdef CONFIG_E1000_NAPI | |
1c7e5b12 YB |
1396 | adapter->polling_netdev = kcalloc(adapter->num_rx_queues, |
1397 | sizeof(struct net_device), | |
1398 | GFP_KERNEL); | |
581d708e MC |
1399 | if (!adapter->polling_netdev) { |
1400 | kfree(adapter->tx_ring); | |
1401 | kfree(adapter->rx_ring); | |
1402 | return -ENOMEM; | |
1403 | } | |
581d708e MC |
1404 | #endif |
1405 | ||
1406 | return E1000_SUCCESS; | |
1407 | } | |
1408 | ||
1da177e4 LT |
1409 | /** |
1410 | * e1000_open - Called when a network interface is made active | |
1411 | * @netdev: network interface device structure | |
1412 | * | |
1413 | * Returns 0 on success, negative value on failure | |
1414 | * | |
1415 | * The open entry point is called when a network interface is made | |
1416 | * active by the system (IFF_UP). At this point all resources needed | |
1417 | * for transmit and receive operations are allocated, the interrupt | |
1418 | * handler is registered with the OS, the watchdog timer is started, | |
1419 | * and the stack is notified that the interface is ready. | |
1420 | **/ | |
1421 | ||
1422 | static int | |
1423 | e1000_open(struct net_device *netdev) | |
1424 | { | |
60490fe0 | 1425 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1426 | int err; |
1427 | ||
2db10a08 | 1428 | /* disallow open during test */ |
1314bbf3 | 1429 | if (test_bit(__E1000_TESTING, &adapter->flags)) |
2db10a08 AK |
1430 | return -EBUSY; |
1431 | ||
1da177e4 | 1432 | /* allocate transmit descriptors */ |
e0aac5a2 AK |
1433 | err = e1000_setup_all_tx_resources(adapter); |
1434 | if (err) | |
1da177e4 LT |
1435 | goto err_setup_tx; |
1436 | ||
1437 | /* allocate receive descriptors */ | |
e0aac5a2 | 1438 | err = e1000_setup_all_rx_resources(adapter); |
b5bf28cd | 1439 | if (err) |
e0aac5a2 | 1440 | goto err_setup_rx; |
b5bf28cd | 1441 | |
79f05bf0 AK |
1442 | e1000_power_up_phy(adapter); |
1443 | ||
2d7edb92 | 1444 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
96838a40 | 1445 | if ((adapter->hw.mng_cookie.status & |
2d7edb92 MC |
1446 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { |
1447 | e1000_update_mng_vlan(adapter); | |
1448 | } | |
1da177e4 | 1449 | |
b55ccb35 JK |
1450 | /* If AMT is enabled, let the firmware know that the network |
1451 | * interface is now open */ | |
1452 | if (adapter->hw.mac_type == e1000_82573 && | |
1453 | e1000_check_mng_mode(&adapter->hw)) | |
1454 | e1000_get_hw_control(adapter); | |
1455 | ||
e0aac5a2 AK |
1456 | /* before we allocate an interrupt, we must be ready to handle it. |
1457 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt | |
1458 | * as soon as we call pci_request_irq, so we have to setup our | |
1459 | * clean_rx handler before we do so. */ | |
1460 | e1000_configure(adapter); | |
1461 | ||
1462 | err = e1000_request_irq(adapter); | |
1463 | if (err) | |
1464 | goto err_req_irq; | |
1465 | ||
1466 | /* From here on the code is the same as e1000_up() */ | |
1467 | clear_bit(__E1000_DOWN, &adapter->flags); | |
1468 | ||
47313054 | 1469 | #ifdef CONFIG_E1000_NAPI |
bea3348e | 1470 | napi_enable(&adapter->napi); |
47313054 HX |
1471 | #endif |
1472 | ||
e0aac5a2 AK |
1473 | e1000_irq_enable(adapter); |
1474 | ||
1475 | /* fire a link status change interrupt to start the watchdog */ | |
1476 | E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_LSC); | |
1477 | ||
1da177e4 LT |
1478 | return E1000_SUCCESS; |
1479 | ||
b5bf28cd | 1480 | err_req_irq: |
e0aac5a2 AK |
1481 | e1000_release_hw_control(adapter); |
1482 | e1000_power_down_phy(adapter); | |
581d708e | 1483 | e1000_free_all_rx_resources(adapter); |
1da177e4 | 1484 | err_setup_rx: |
581d708e | 1485 | e1000_free_all_tx_resources(adapter); |
1da177e4 LT |
1486 | err_setup_tx: |
1487 | e1000_reset(adapter); | |
1488 | ||
1489 | return err; | |
1490 | } | |
1491 | ||
1492 | /** | |
1493 | * e1000_close - Disables a network interface | |
1494 | * @netdev: network interface device structure | |
1495 | * | |
1496 | * Returns 0, this is not allowed to fail | |
1497 | * | |
1498 | * The close entry point is called when an interface is de-activated | |
1499 | * by the OS. The hardware is still under the drivers control, but | |
1500 | * needs to be disabled. A global MAC reset is issued to stop the | |
1501 | * hardware, and all transmit and receive resources are freed. | |
1502 | **/ | |
1503 | ||
1504 | static int | |
1505 | e1000_close(struct net_device *netdev) | |
1506 | { | |
60490fe0 | 1507 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 1508 | |
2db10a08 | 1509 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
1da177e4 | 1510 | e1000_down(adapter); |
79f05bf0 | 1511 | e1000_power_down_phy(adapter); |
2db10a08 | 1512 | e1000_free_irq(adapter); |
1da177e4 | 1513 | |
581d708e MC |
1514 | e1000_free_all_tx_resources(adapter); |
1515 | e1000_free_all_rx_resources(adapter); | |
1da177e4 | 1516 | |
4666560a BA |
1517 | /* kill manageability vlan ID if supported, but not if a vlan with |
1518 | * the same ID is registered on the host OS (let 8021q kill it) */ | |
96838a40 | 1519 | if ((adapter->hw.mng_cookie.status & |
4666560a BA |
1520 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
1521 | !(adapter->vlgrp && | |
5c15bdec | 1522 | vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) { |
2d7edb92 MC |
1523 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
1524 | } | |
b55ccb35 JK |
1525 | |
1526 | /* If AMT is enabled, let the firmware know that the network | |
1527 | * interface is now closed */ | |
1528 | if (adapter->hw.mac_type == e1000_82573 && | |
1529 | e1000_check_mng_mode(&adapter->hw)) | |
1530 | e1000_release_hw_control(adapter); | |
1531 | ||
1da177e4 LT |
1532 | return 0; |
1533 | } | |
1534 | ||
1535 | /** | |
1536 | * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary | |
1537 | * @adapter: address of board private structure | |
2d7edb92 MC |
1538 | * @start: address of beginning of memory |
1539 | * @len: length of memory | |
1da177e4 | 1540 | **/ |
c3033b01 | 1541 | static bool |
1da177e4 LT |
1542 | e1000_check_64k_bound(struct e1000_adapter *adapter, |
1543 | void *start, unsigned long len) | |
1544 | { | |
1545 | unsigned long begin = (unsigned long) start; | |
1546 | unsigned long end = begin + len; | |
1547 | ||
2648345f MC |
1548 | /* First rev 82545 and 82546 need to not allow any memory |
1549 | * write location to cross 64k boundary due to errata 23 */ | |
1da177e4 | 1550 | if (adapter->hw.mac_type == e1000_82545 || |
2648345f | 1551 | adapter->hw.mac_type == e1000_82546) { |
c3033b01 | 1552 | return ((begin ^ (end - 1)) >> 16) != 0 ? false : true; |
1da177e4 LT |
1553 | } |
1554 | ||
c3033b01 | 1555 | return true; |
1da177e4 LT |
1556 | } |
1557 | ||
1558 | /** | |
1559 | * e1000_setup_tx_resources - allocate Tx resources (Descriptors) | |
1560 | * @adapter: board private structure | |
581d708e | 1561 | * @txdr: tx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1562 | * |
1563 | * Return 0 on success, negative on failure | |
1564 | **/ | |
1565 | ||
3ad2cc67 | 1566 | static int |
581d708e MC |
1567 | e1000_setup_tx_resources(struct e1000_adapter *adapter, |
1568 | struct e1000_tx_ring *txdr) | |
1da177e4 | 1569 | { |
1da177e4 LT |
1570 | struct pci_dev *pdev = adapter->pdev; |
1571 | int size; | |
1572 | ||
1573 | size = sizeof(struct e1000_buffer) * txdr->count; | |
cd94dd0b | 1574 | txdr->buffer_info = vmalloc(size); |
96838a40 | 1575 | if (!txdr->buffer_info) { |
2648345f MC |
1576 | DPRINTK(PROBE, ERR, |
1577 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1da177e4 LT |
1578 | return -ENOMEM; |
1579 | } | |
1580 | memset(txdr->buffer_info, 0, size); | |
1581 | ||
1582 | /* round up to nearest 4K */ | |
1583 | ||
1584 | txdr->size = txdr->count * sizeof(struct e1000_tx_desc); | |
9099cfb9 | 1585 | txdr->size = ALIGN(txdr->size, 4096); |
1da177e4 LT |
1586 | |
1587 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); | |
96838a40 | 1588 | if (!txdr->desc) { |
1da177e4 | 1589 | setup_tx_desc_die: |
1da177e4 | 1590 | vfree(txdr->buffer_info); |
2648345f MC |
1591 | DPRINTK(PROBE, ERR, |
1592 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1da177e4 LT |
1593 | return -ENOMEM; |
1594 | } | |
1595 | ||
2648345f | 1596 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1597 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
1598 | void *olddesc = txdr->desc; | |
1599 | dma_addr_t olddma = txdr->dma; | |
2648345f MC |
1600 | DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes " |
1601 | "at %p\n", txdr->size, txdr->desc); | |
1602 | /* Try again, without freeing the previous */ | |
1da177e4 | 1603 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); |
2648345f | 1604 | /* Failed allocation, critical failure */ |
96838a40 | 1605 | if (!txdr->desc) { |
1da177e4 LT |
1606 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1607 | goto setup_tx_desc_die; | |
1608 | } | |
1609 | ||
1610 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { | |
1611 | /* give up */ | |
2648345f MC |
1612 | pci_free_consistent(pdev, txdr->size, txdr->desc, |
1613 | txdr->dma); | |
1da177e4 LT |
1614 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1615 | DPRINTK(PROBE, ERR, | |
2648345f MC |
1616 | "Unable to allocate aligned memory " |
1617 | "for the transmit descriptor ring\n"); | |
1da177e4 LT |
1618 | vfree(txdr->buffer_info); |
1619 | return -ENOMEM; | |
1620 | } else { | |
2648345f | 1621 | /* Free old allocation, new allocation was successful */ |
1da177e4 LT |
1622 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1623 | } | |
1624 | } | |
1625 | memset(txdr->desc, 0, txdr->size); | |
1626 | ||
1627 | txdr->next_to_use = 0; | |
1628 | txdr->next_to_clean = 0; | |
2ae76d98 | 1629 | spin_lock_init(&txdr->tx_lock); |
1da177e4 LT |
1630 | |
1631 | return 0; | |
1632 | } | |
1633 | ||
581d708e MC |
1634 | /** |
1635 | * e1000_setup_all_tx_resources - wrapper to allocate Tx resources | |
1636 | * (Descriptors) for all queues | |
1637 | * @adapter: board private structure | |
1638 | * | |
581d708e MC |
1639 | * Return 0 on success, negative on failure |
1640 | **/ | |
1641 | ||
1642 | int | |
1643 | e1000_setup_all_tx_resources(struct e1000_adapter *adapter) | |
1644 | { | |
1645 | int i, err = 0; | |
1646 | ||
f56799ea | 1647 | for (i = 0; i < adapter->num_tx_queues; i++) { |
581d708e MC |
1648 | err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
1649 | if (err) { | |
1650 | DPRINTK(PROBE, ERR, | |
1651 | "Allocation for Tx Queue %u failed\n", i); | |
3fbbc72e VA |
1652 | for (i-- ; i >= 0; i--) |
1653 | e1000_free_tx_resources(adapter, | |
1654 | &adapter->tx_ring[i]); | |
581d708e MC |
1655 | break; |
1656 | } | |
1657 | } | |
1658 | ||
1659 | return err; | |
1660 | } | |
1661 | ||
1da177e4 LT |
1662 | /** |
1663 | * e1000_configure_tx - Configure 8254x Transmit Unit after Reset | |
1664 | * @adapter: board private structure | |
1665 | * | |
1666 | * Configure the Tx unit of the MAC after a reset. | |
1667 | **/ | |
1668 | ||
1669 | static void | |
1670 | e1000_configure_tx(struct e1000_adapter *adapter) | |
1671 | { | |
406874a7 | 1672 | u64 tdba; |
581d708e | 1673 | struct e1000_hw *hw = &adapter->hw; |
406874a7 JP |
1674 | u32 tdlen, tctl, tipg, tarc; |
1675 | u32 ipgr1, ipgr2; | |
1da177e4 LT |
1676 | |
1677 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1678 | ||
f56799ea | 1679 | switch (adapter->num_tx_queues) { |
24025e4e MC |
1680 | case 1: |
1681 | default: | |
581d708e MC |
1682 | tdba = adapter->tx_ring[0].dma; |
1683 | tdlen = adapter->tx_ring[0].count * | |
1684 | sizeof(struct e1000_tx_desc); | |
581d708e | 1685 | E1000_WRITE_REG(hw, TDLEN, tdlen); |
4ca213a6 AK |
1686 | E1000_WRITE_REG(hw, TDBAH, (tdba >> 32)); |
1687 | E1000_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL)); | |
581d708e | 1688 | E1000_WRITE_REG(hw, TDT, 0); |
4ca213a6 | 1689 | E1000_WRITE_REG(hw, TDH, 0); |
6a951698 AK |
1690 | adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH); |
1691 | adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT); | |
24025e4e MC |
1692 | break; |
1693 | } | |
1da177e4 LT |
1694 | |
1695 | /* Set the default values for the Tx Inter Packet Gap timer */ | |
d89b6c67 JB |
1696 | if (adapter->hw.mac_type <= e1000_82547_rev_2 && |
1697 | (hw->media_type == e1000_media_type_fiber || | |
1698 | hw->media_type == e1000_media_type_internal_serdes)) | |
0fadb059 JK |
1699 | tipg = DEFAULT_82543_TIPG_IPGT_FIBER; |
1700 | else | |
1701 | tipg = DEFAULT_82543_TIPG_IPGT_COPPER; | |
1702 | ||
581d708e | 1703 | switch (hw->mac_type) { |
1da177e4 LT |
1704 | case e1000_82542_rev2_0: |
1705 | case e1000_82542_rev2_1: | |
1706 | tipg = DEFAULT_82542_TIPG_IPGT; | |
0fadb059 JK |
1707 | ipgr1 = DEFAULT_82542_TIPG_IPGR1; |
1708 | ipgr2 = DEFAULT_82542_TIPG_IPGR2; | |
1da177e4 | 1709 | break; |
87041639 JK |
1710 | case e1000_80003es2lan: |
1711 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; | |
1712 | ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; | |
1713 | break; | |
1da177e4 | 1714 | default: |
0fadb059 JK |
1715 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
1716 | ipgr2 = DEFAULT_82543_TIPG_IPGR2; | |
1717 | break; | |
1da177e4 | 1718 | } |
0fadb059 JK |
1719 | tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; |
1720 | tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; | |
581d708e | 1721 | E1000_WRITE_REG(hw, TIPG, tipg); |
1da177e4 LT |
1722 | |
1723 | /* Set the Tx Interrupt Delay register */ | |
1724 | ||
581d708e MC |
1725 | E1000_WRITE_REG(hw, TIDV, adapter->tx_int_delay); |
1726 | if (hw->mac_type >= e1000_82540) | |
1727 | E1000_WRITE_REG(hw, TADV, adapter->tx_abs_int_delay); | |
1da177e4 LT |
1728 | |
1729 | /* Program the Transmit Control Register */ | |
1730 | ||
581d708e | 1731 | tctl = E1000_READ_REG(hw, TCTL); |
1da177e4 | 1732 | tctl &= ~E1000_TCTL_CT; |
7e6c9861 | 1733 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
1da177e4 LT |
1734 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
1735 | ||
2ae76d98 MC |
1736 | if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) { |
1737 | tarc = E1000_READ_REG(hw, TARC0); | |
90fb5135 AK |
1738 | /* set the speed mode bit, we'll clear it if we're not at |
1739 | * gigabit link later */ | |
09ae3e88 | 1740 | tarc |= (1 << 21); |
2ae76d98 | 1741 | E1000_WRITE_REG(hw, TARC0, tarc); |
87041639 JK |
1742 | } else if (hw->mac_type == e1000_80003es2lan) { |
1743 | tarc = E1000_READ_REG(hw, TARC0); | |
1744 | tarc |= 1; | |
87041639 JK |
1745 | E1000_WRITE_REG(hw, TARC0, tarc); |
1746 | tarc = E1000_READ_REG(hw, TARC1); | |
1747 | tarc |= 1; | |
1748 | E1000_WRITE_REG(hw, TARC1, tarc); | |
2ae76d98 MC |
1749 | } |
1750 | ||
581d708e | 1751 | e1000_config_collision_dist(hw); |
1da177e4 LT |
1752 | |
1753 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
6a042dab JB |
1754 | adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; |
1755 | ||
1756 | /* only set IDE if we are delaying interrupts using the timers */ | |
1757 | if (adapter->tx_int_delay) | |
1758 | adapter->txd_cmd |= E1000_TXD_CMD_IDE; | |
1da177e4 | 1759 | |
581d708e | 1760 | if (hw->mac_type < e1000_82543) |
1da177e4 LT |
1761 | adapter->txd_cmd |= E1000_TXD_CMD_RPS; |
1762 | else | |
1763 | adapter->txd_cmd |= E1000_TXD_CMD_RS; | |
1764 | ||
1765 | /* Cache if we're 82544 running in PCI-X because we'll | |
1766 | * need this to apply a workaround later in the send path. */ | |
581d708e MC |
1767 | if (hw->mac_type == e1000_82544 && |
1768 | hw->bus_type == e1000_bus_type_pcix) | |
1da177e4 | 1769 | adapter->pcix_82544 = 1; |
7e6c9861 JK |
1770 | |
1771 | E1000_WRITE_REG(hw, TCTL, tctl); | |
1772 | ||
1da177e4 LT |
1773 | } |
1774 | ||
1775 | /** | |
1776 | * e1000_setup_rx_resources - allocate Rx resources (Descriptors) | |
1777 | * @adapter: board private structure | |
581d708e | 1778 | * @rxdr: rx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1779 | * |
1780 | * Returns 0 on success, negative on failure | |
1781 | **/ | |
1782 | ||
3ad2cc67 | 1783 | static int |
581d708e MC |
1784 | e1000_setup_rx_resources(struct e1000_adapter *adapter, |
1785 | struct e1000_rx_ring *rxdr) | |
1da177e4 | 1786 | { |
1da177e4 | 1787 | struct pci_dev *pdev = adapter->pdev; |
2d7edb92 | 1788 | int size, desc_len; |
1da177e4 LT |
1789 | |
1790 | size = sizeof(struct e1000_buffer) * rxdr->count; | |
cd94dd0b | 1791 | rxdr->buffer_info = vmalloc(size); |
581d708e | 1792 | if (!rxdr->buffer_info) { |
2648345f MC |
1793 | DPRINTK(PROBE, ERR, |
1794 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1da177e4 LT |
1795 | return -ENOMEM; |
1796 | } | |
1797 | memset(rxdr->buffer_info, 0, size); | |
1798 | ||
1c7e5b12 YB |
1799 | rxdr->ps_page = kcalloc(rxdr->count, sizeof(struct e1000_ps_page), |
1800 | GFP_KERNEL); | |
96838a40 | 1801 | if (!rxdr->ps_page) { |
2d7edb92 MC |
1802 | vfree(rxdr->buffer_info); |
1803 | DPRINTK(PROBE, ERR, | |
1804 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1805 | return -ENOMEM; | |
1806 | } | |
2d7edb92 | 1807 | |
1c7e5b12 YB |
1808 | rxdr->ps_page_dma = kcalloc(rxdr->count, |
1809 | sizeof(struct e1000_ps_page_dma), | |
1810 | GFP_KERNEL); | |
96838a40 | 1811 | if (!rxdr->ps_page_dma) { |
2d7edb92 MC |
1812 | vfree(rxdr->buffer_info); |
1813 | kfree(rxdr->ps_page); | |
1814 | DPRINTK(PROBE, ERR, | |
1815 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1816 | return -ENOMEM; | |
1817 | } | |
2d7edb92 | 1818 | |
96838a40 | 1819 | if (adapter->hw.mac_type <= e1000_82547_rev_2) |
2d7edb92 MC |
1820 | desc_len = sizeof(struct e1000_rx_desc); |
1821 | else | |
1822 | desc_len = sizeof(union e1000_rx_desc_packet_split); | |
1823 | ||
1da177e4 LT |
1824 | /* Round up to nearest 4K */ |
1825 | ||
2d7edb92 | 1826 | rxdr->size = rxdr->count * desc_len; |
9099cfb9 | 1827 | rxdr->size = ALIGN(rxdr->size, 4096); |
1da177e4 LT |
1828 | |
1829 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); | |
1830 | ||
581d708e MC |
1831 | if (!rxdr->desc) { |
1832 | DPRINTK(PROBE, ERR, | |
1833 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1da177e4 | 1834 | setup_rx_desc_die: |
1da177e4 | 1835 | vfree(rxdr->buffer_info); |
2d7edb92 MC |
1836 | kfree(rxdr->ps_page); |
1837 | kfree(rxdr->ps_page_dma); | |
1da177e4 LT |
1838 | return -ENOMEM; |
1839 | } | |
1840 | ||
2648345f | 1841 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1842 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
1843 | void *olddesc = rxdr->desc; | |
1844 | dma_addr_t olddma = rxdr->dma; | |
2648345f MC |
1845 | DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes " |
1846 | "at %p\n", rxdr->size, rxdr->desc); | |
1847 | /* Try again, without freeing the previous */ | |
1da177e4 | 1848 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); |
2648345f | 1849 | /* Failed allocation, critical failure */ |
581d708e | 1850 | if (!rxdr->desc) { |
1da177e4 | 1851 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
581d708e MC |
1852 | DPRINTK(PROBE, ERR, |
1853 | "Unable to allocate memory " | |
1854 | "for the receive descriptor ring\n"); | |
1da177e4 LT |
1855 | goto setup_rx_desc_die; |
1856 | } | |
1857 | ||
1858 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { | |
1859 | /* give up */ | |
2648345f MC |
1860 | pci_free_consistent(pdev, rxdr->size, rxdr->desc, |
1861 | rxdr->dma); | |
1da177e4 | 1862 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
2648345f MC |
1863 | DPRINTK(PROBE, ERR, |
1864 | "Unable to allocate aligned memory " | |
1865 | "for the receive descriptor ring\n"); | |
581d708e | 1866 | goto setup_rx_desc_die; |
1da177e4 | 1867 | } else { |
2648345f | 1868 | /* Free old allocation, new allocation was successful */ |
1da177e4 LT |
1869 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
1870 | } | |
1871 | } | |
1872 | memset(rxdr->desc, 0, rxdr->size); | |
1873 | ||
1874 | rxdr->next_to_clean = 0; | |
1875 | rxdr->next_to_use = 0; | |
1876 | ||
1877 | return 0; | |
1878 | } | |
1879 | ||
581d708e MC |
1880 | /** |
1881 | * e1000_setup_all_rx_resources - wrapper to allocate Rx resources | |
1882 | * (Descriptors) for all queues | |
1883 | * @adapter: board private structure | |
1884 | * | |
581d708e MC |
1885 | * Return 0 on success, negative on failure |
1886 | **/ | |
1887 | ||
1888 | int | |
1889 | e1000_setup_all_rx_resources(struct e1000_adapter *adapter) | |
1890 | { | |
1891 | int i, err = 0; | |
1892 | ||
f56799ea | 1893 | for (i = 0; i < adapter->num_rx_queues; i++) { |
581d708e MC |
1894 | err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
1895 | if (err) { | |
1896 | DPRINTK(PROBE, ERR, | |
1897 | "Allocation for Rx Queue %u failed\n", i); | |
3fbbc72e VA |
1898 | for (i-- ; i >= 0; i--) |
1899 | e1000_free_rx_resources(adapter, | |
1900 | &adapter->rx_ring[i]); | |
581d708e MC |
1901 | break; |
1902 | } | |
1903 | } | |
1904 | ||
1905 | return err; | |
1906 | } | |
1907 | ||
1da177e4 | 1908 | /** |
2648345f | 1909 | * e1000_setup_rctl - configure the receive control registers |
1da177e4 LT |
1910 | * @adapter: Board private structure |
1911 | **/ | |
e4c811c9 MC |
1912 | #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ |
1913 | (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) | |
1da177e4 LT |
1914 | static void |
1915 | e1000_setup_rctl(struct e1000_adapter *adapter) | |
1916 | { | |
406874a7 JP |
1917 | u32 rctl, rfctl; |
1918 | u32 psrctl = 0; | |
35ec56bb | 1919 | #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT |
406874a7 | 1920 | u32 pages = 0; |
e4c811c9 | 1921 | #endif |
1da177e4 LT |
1922 | |
1923 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
1924 | ||
1925 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
1926 | ||
1927 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | | |
1928 | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | | |
1929 | (adapter->hw.mc_filter_type << E1000_RCTL_MO_SHIFT); | |
1930 | ||
0fadb059 | 1931 | if (adapter->hw.tbi_compatibility_on == 1) |
1da177e4 LT |
1932 | rctl |= E1000_RCTL_SBP; |
1933 | else | |
1934 | rctl &= ~E1000_RCTL_SBP; | |
1935 | ||
2d7edb92 MC |
1936 | if (adapter->netdev->mtu <= ETH_DATA_LEN) |
1937 | rctl &= ~E1000_RCTL_LPE; | |
1938 | else | |
1939 | rctl |= E1000_RCTL_LPE; | |
1940 | ||
1da177e4 | 1941 | /* Setup buffer sizes */ |
9e2feace AK |
1942 | rctl &= ~E1000_RCTL_SZ_4096; |
1943 | rctl |= E1000_RCTL_BSEX; | |
1944 | switch (adapter->rx_buffer_len) { | |
1945 | case E1000_RXBUFFER_256: | |
1946 | rctl |= E1000_RCTL_SZ_256; | |
1947 | rctl &= ~E1000_RCTL_BSEX; | |
1948 | break; | |
1949 | case E1000_RXBUFFER_512: | |
1950 | rctl |= E1000_RCTL_SZ_512; | |
1951 | rctl &= ~E1000_RCTL_BSEX; | |
1952 | break; | |
1953 | case E1000_RXBUFFER_1024: | |
1954 | rctl |= E1000_RCTL_SZ_1024; | |
1955 | rctl &= ~E1000_RCTL_BSEX; | |
1956 | break; | |
a1415ee6 JK |
1957 | case E1000_RXBUFFER_2048: |
1958 | default: | |
1959 | rctl |= E1000_RCTL_SZ_2048; | |
1960 | rctl &= ~E1000_RCTL_BSEX; | |
1961 | break; | |
1962 | case E1000_RXBUFFER_4096: | |
1963 | rctl |= E1000_RCTL_SZ_4096; | |
1964 | break; | |
1965 | case E1000_RXBUFFER_8192: | |
1966 | rctl |= E1000_RCTL_SZ_8192; | |
1967 | break; | |
1968 | case E1000_RXBUFFER_16384: | |
1969 | rctl |= E1000_RCTL_SZ_16384; | |
1970 | break; | |
2d7edb92 MC |
1971 | } |
1972 | ||
35ec56bb | 1973 | #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT |
2d7edb92 MC |
1974 | /* 82571 and greater support packet-split where the protocol |
1975 | * header is placed in skb->data and the packet data is | |
1976 | * placed in pages hanging off of skb_shinfo(skb)->nr_frags. | |
1977 | * In the case of a non-split, skb->data is linearly filled, | |
1978 | * followed by the page buffers. Therefore, skb->data is | |
1979 | * sized to hold the largest protocol header. | |
1980 | */ | |
e64d7d02 JB |
1981 | /* allocations using alloc_page take too long for regular MTU |
1982 | * so only enable packet split for jumbo frames */ | |
e4c811c9 | 1983 | pages = PAGE_USE_COUNT(adapter->netdev->mtu); |
e64d7d02 JB |
1984 | if ((adapter->hw.mac_type >= e1000_82571) && (pages <= 3) && |
1985 | PAGE_SIZE <= 16384 && (rctl & E1000_RCTL_LPE)) | |
e4c811c9 MC |
1986 | adapter->rx_ps_pages = pages; |
1987 | else | |
1988 | adapter->rx_ps_pages = 0; | |
2d7edb92 | 1989 | #endif |
e4c811c9 | 1990 | if (adapter->rx_ps_pages) { |
2d7edb92 MC |
1991 | /* Configure extra packet-split registers */ |
1992 | rfctl = E1000_READ_REG(&adapter->hw, RFCTL); | |
1993 | rfctl |= E1000_RFCTL_EXTEN; | |
87ca4e5b AK |
1994 | /* disable packet split support for IPv6 extension headers, |
1995 | * because some malformed IPv6 headers can hang the RX */ | |
1996 | rfctl |= (E1000_RFCTL_IPV6_EX_DIS | | |
1997 | E1000_RFCTL_NEW_IPV6_EXT_DIS); | |
1998 | ||
2d7edb92 MC |
1999 | E1000_WRITE_REG(&adapter->hw, RFCTL, rfctl); |
2000 | ||
7dfee0cb | 2001 | rctl |= E1000_RCTL_DTYP_PS; |
96838a40 | 2002 | |
2d7edb92 MC |
2003 | psrctl |= adapter->rx_ps_bsize0 >> |
2004 | E1000_PSRCTL_BSIZE0_SHIFT; | |
e4c811c9 MC |
2005 | |
2006 | switch (adapter->rx_ps_pages) { | |
2007 | case 3: | |
2008 | psrctl |= PAGE_SIZE << | |
2009 | E1000_PSRCTL_BSIZE3_SHIFT; | |
2010 | case 2: | |
2011 | psrctl |= PAGE_SIZE << | |
2012 | E1000_PSRCTL_BSIZE2_SHIFT; | |
2013 | case 1: | |
2014 | psrctl |= PAGE_SIZE >> | |
2015 | E1000_PSRCTL_BSIZE1_SHIFT; | |
2016 | break; | |
2017 | } | |
2d7edb92 MC |
2018 | |
2019 | E1000_WRITE_REG(&adapter->hw, PSRCTL, psrctl); | |
1da177e4 LT |
2020 | } |
2021 | ||
2022 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2023 | } | |
2024 | ||
2025 | /** | |
2026 | * e1000_configure_rx - Configure 8254x Receive Unit after Reset | |
2027 | * @adapter: board private structure | |
2028 | * | |
2029 | * Configure the Rx unit of the MAC after a reset. | |
2030 | **/ | |
2031 | ||
2032 | static void | |
2033 | e1000_configure_rx(struct e1000_adapter *adapter) | |
2034 | { | |
406874a7 | 2035 | u64 rdba; |
581d708e | 2036 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 2037 | u32 rdlen, rctl, rxcsum, ctrl_ext; |
2d7edb92 | 2038 | |
e4c811c9 | 2039 | if (adapter->rx_ps_pages) { |
0f15a8fa | 2040 | /* this is a 32 byte descriptor */ |
581d708e | 2041 | rdlen = adapter->rx_ring[0].count * |
2d7edb92 MC |
2042 | sizeof(union e1000_rx_desc_packet_split); |
2043 | adapter->clean_rx = e1000_clean_rx_irq_ps; | |
2044 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; | |
2045 | } else { | |
581d708e MC |
2046 | rdlen = adapter->rx_ring[0].count * |
2047 | sizeof(struct e1000_rx_desc); | |
2d7edb92 MC |
2048 | adapter->clean_rx = e1000_clean_rx_irq; |
2049 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers; | |
2050 | } | |
1da177e4 LT |
2051 | |
2052 | /* disable receives while setting up the descriptors */ | |
581d708e MC |
2053 | rctl = E1000_READ_REG(hw, RCTL); |
2054 | E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); | |
1da177e4 LT |
2055 | |
2056 | /* set the Receive Delay Timer Register */ | |
581d708e | 2057 | E1000_WRITE_REG(hw, RDTR, adapter->rx_int_delay); |
1da177e4 | 2058 | |
581d708e MC |
2059 | if (hw->mac_type >= e1000_82540) { |
2060 | E1000_WRITE_REG(hw, RADV, adapter->rx_abs_int_delay); | |
835bb129 | 2061 | if (adapter->itr_setting != 0) |
581d708e | 2062 | E1000_WRITE_REG(hw, ITR, |
1da177e4 LT |
2063 | 1000000000 / (adapter->itr * 256)); |
2064 | } | |
2065 | ||
2ae76d98 | 2066 | if (hw->mac_type >= e1000_82571) { |
2ae76d98 | 2067 | ctrl_ext = E1000_READ_REG(hw, CTRL_EXT); |
1e613fd9 | 2068 | /* Reset delay timers after every interrupt */ |
6fc7a7ec | 2069 | ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR; |
1e613fd9 | 2070 | #ifdef CONFIG_E1000_NAPI |
835bb129 | 2071 | /* Auto-Mask interrupts upon ICR access */ |
1e613fd9 | 2072 | ctrl_ext |= E1000_CTRL_EXT_IAME; |
835bb129 | 2073 | E1000_WRITE_REG(hw, IAM, 0xffffffff); |
1e613fd9 | 2074 | #endif |
2ae76d98 MC |
2075 | E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); |
2076 | E1000_WRITE_FLUSH(hw); | |
2077 | } | |
2078 | ||
581d708e MC |
2079 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
2080 | * the Base and Length of the Rx Descriptor Ring */ | |
f56799ea | 2081 | switch (adapter->num_rx_queues) { |
24025e4e MC |
2082 | case 1: |
2083 | default: | |
581d708e | 2084 | rdba = adapter->rx_ring[0].dma; |
581d708e | 2085 | E1000_WRITE_REG(hw, RDLEN, rdlen); |
4ca213a6 AK |
2086 | E1000_WRITE_REG(hw, RDBAH, (rdba >> 32)); |
2087 | E1000_WRITE_REG(hw, RDBAL, (rdba & 0x00000000ffffffffULL)); | |
581d708e | 2088 | E1000_WRITE_REG(hw, RDT, 0); |
4ca213a6 | 2089 | E1000_WRITE_REG(hw, RDH, 0); |
6a951698 AK |
2090 | adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH); |
2091 | adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT); | |
581d708e | 2092 | break; |
24025e4e MC |
2093 | } |
2094 | ||
1da177e4 | 2095 | /* Enable 82543 Receive Checksum Offload for TCP and UDP */ |
581d708e MC |
2096 | if (hw->mac_type >= e1000_82543) { |
2097 | rxcsum = E1000_READ_REG(hw, RXCSUM); | |
c3033b01 | 2098 | if (adapter->rx_csum) { |
2d7edb92 MC |
2099 | rxcsum |= E1000_RXCSUM_TUOFL; |
2100 | ||
868d5309 | 2101 | /* Enable 82571 IPv4 payload checksum for UDP fragments |
2d7edb92 | 2102 | * Must be used in conjunction with packet-split. */ |
96838a40 JB |
2103 | if ((hw->mac_type >= e1000_82571) && |
2104 | (adapter->rx_ps_pages)) { | |
2d7edb92 MC |
2105 | rxcsum |= E1000_RXCSUM_IPPCSE; |
2106 | } | |
2107 | } else { | |
2108 | rxcsum &= ~E1000_RXCSUM_TUOFL; | |
2109 | /* don't need to clear IPPCSE as it defaults to 0 */ | |
2110 | } | |
581d708e | 2111 | E1000_WRITE_REG(hw, RXCSUM, rxcsum); |
1da177e4 LT |
2112 | } |
2113 | ||
21c4d5e0 AK |
2114 | /* enable early receives on 82573, only takes effect if using > 2048 |
2115 | * byte total frame size. for example only for jumbo frames */ | |
2116 | #define E1000_ERT_2048 0x100 | |
2117 | if (hw->mac_type == e1000_82573) | |
2118 | E1000_WRITE_REG(hw, ERT, E1000_ERT_2048); | |
2119 | ||
1da177e4 | 2120 | /* Enable Receives */ |
581d708e | 2121 | E1000_WRITE_REG(hw, RCTL, rctl); |
1da177e4 LT |
2122 | } |
2123 | ||
2124 | /** | |
581d708e | 2125 | * e1000_free_tx_resources - Free Tx Resources per Queue |
1da177e4 | 2126 | * @adapter: board private structure |
581d708e | 2127 | * @tx_ring: Tx descriptor ring for a specific queue |
1da177e4 LT |
2128 | * |
2129 | * Free all transmit software resources | |
2130 | **/ | |
2131 | ||
3ad2cc67 | 2132 | static void |
581d708e MC |
2133 | e1000_free_tx_resources(struct e1000_adapter *adapter, |
2134 | struct e1000_tx_ring *tx_ring) | |
1da177e4 LT |
2135 | { |
2136 | struct pci_dev *pdev = adapter->pdev; | |
2137 | ||
581d708e | 2138 | e1000_clean_tx_ring(adapter, tx_ring); |
1da177e4 | 2139 | |
581d708e MC |
2140 | vfree(tx_ring->buffer_info); |
2141 | tx_ring->buffer_info = NULL; | |
1da177e4 | 2142 | |
581d708e | 2143 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); |
1da177e4 | 2144 | |
581d708e MC |
2145 | tx_ring->desc = NULL; |
2146 | } | |
2147 | ||
2148 | /** | |
2149 | * e1000_free_all_tx_resources - Free Tx Resources for All Queues | |
2150 | * @adapter: board private structure | |
2151 | * | |
2152 | * Free all transmit software resources | |
2153 | **/ | |
2154 | ||
2155 | void | |
2156 | e1000_free_all_tx_resources(struct e1000_adapter *adapter) | |
2157 | { | |
2158 | int i; | |
2159 | ||
f56799ea | 2160 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 2161 | e1000_free_tx_resources(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
2162 | } |
2163 | ||
e619d523 | 2164 | static void |
1da177e4 LT |
2165 | e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, |
2166 | struct e1000_buffer *buffer_info) | |
2167 | { | |
96838a40 | 2168 | if (buffer_info->dma) { |
2648345f MC |
2169 | pci_unmap_page(adapter->pdev, |
2170 | buffer_info->dma, | |
2171 | buffer_info->length, | |
2172 | PCI_DMA_TODEVICE); | |
a9ebadd6 | 2173 | buffer_info->dma = 0; |
1da177e4 | 2174 | } |
a9ebadd6 | 2175 | if (buffer_info->skb) { |
1da177e4 | 2176 | dev_kfree_skb_any(buffer_info->skb); |
a9ebadd6 JB |
2177 | buffer_info->skb = NULL; |
2178 | } | |
2179 | /* buffer_info must be completely set up in the transmit path */ | |
1da177e4 LT |
2180 | } |
2181 | ||
2182 | /** | |
2183 | * e1000_clean_tx_ring - Free Tx Buffers | |
2184 | * @adapter: board private structure | |
581d708e | 2185 | * @tx_ring: ring to be cleaned |
1da177e4 LT |
2186 | **/ |
2187 | ||
2188 | static void | |
581d708e MC |
2189 | e1000_clean_tx_ring(struct e1000_adapter *adapter, |
2190 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 2191 | { |
1da177e4 LT |
2192 | struct e1000_buffer *buffer_info; |
2193 | unsigned long size; | |
2194 | unsigned int i; | |
2195 | ||
2196 | /* Free all the Tx ring sk_buffs */ | |
2197 | ||
96838a40 | 2198 | for (i = 0; i < tx_ring->count; i++) { |
1da177e4 LT |
2199 | buffer_info = &tx_ring->buffer_info[i]; |
2200 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); | |
2201 | } | |
2202 | ||
2203 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
2204 | memset(tx_ring->buffer_info, 0, size); | |
2205 | ||
2206 | /* Zero out the descriptor ring */ | |
2207 | ||
2208 | memset(tx_ring->desc, 0, tx_ring->size); | |
2209 | ||
2210 | tx_ring->next_to_use = 0; | |
2211 | tx_ring->next_to_clean = 0; | |
fd803241 | 2212 | tx_ring->last_tx_tso = 0; |
1da177e4 | 2213 | |
581d708e MC |
2214 | writel(0, adapter->hw.hw_addr + tx_ring->tdh); |
2215 | writel(0, adapter->hw.hw_addr + tx_ring->tdt); | |
2216 | } | |
2217 | ||
2218 | /** | |
2219 | * e1000_clean_all_tx_rings - Free Tx Buffers for all queues | |
2220 | * @adapter: board private structure | |
2221 | **/ | |
2222 | ||
2223 | static void | |
2224 | e1000_clean_all_tx_rings(struct e1000_adapter *adapter) | |
2225 | { | |
2226 | int i; | |
2227 | ||
f56799ea | 2228 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 2229 | e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
2230 | } |
2231 | ||
2232 | /** | |
2233 | * e1000_free_rx_resources - Free Rx Resources | |
2234 | * @adapter: board private structure | |
581d708e | 2235 | * @rx_ring: ring to clean the resources from |
1da177e4 LT |
2236 | * |
2237 | * Free all receive software resources | |
2238 | **/ | |
2239 | ||
3ad2cc67 | 2240 | static void |
581d708e MC |
2241 | e1000_free_rx_resources(struct e1000_adapter *adapter, |
2242 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 2243 | { |
1da177e4 LT |
2244 | struct pci_dev *pdev = adapter->pdev; |
2245 | ||
581d708e | 2246 | e1000_clean_rx_ring(adapter, rx_ring); |
1da177e4 LT |
2247 | |
2248 | vfree(rx_ring->buffer_info); | |
2249 | rx_ring->buffer_info = NULL; | |
2d7edb92 MC |
2250 | kfree(rx_ring->ps_page); |
2251 | rx_ring->ps_page = NULL; | |
2252 | kfree(rx_ring->ps_page_dma); | |
2253 | rx_ring->ps_page_dma = NULL; | |
1da177e4 LT |
2254 | |
2255 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
2256 | ||
2257 | rx_ring->desc = NULL; | |
2258 | } | |
2259 | ||
2260 | /** | |
581d708e | 2261 | * e1000_free_all_rx_resources - Free Rx Resources for All Queues |
1da177e4 | 2262 | * @adapter: board private structure |
581d708e MC |
2263 | * |
2264 | * Free all receive software resources | |
2265 | **/ | |
2266 | ||
2267 | void | |
2268 | e1000_free_all_rx_resources(struct e1000_adapter *adapter) | |
2269 | { | |
2270 | int i; | |
2271 | ||
f56799ea | 2272 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e MC |
2273 | e1000_free_rx_resources(adapter, &adapter->rx_ring[i]); |
2274 | } | |
2275 | ||
2276 | /** | |
2277 | * e1000_clean_rx_ring - Free Rx Buffers per Queue | |
2278 | * @adapter: board private structure | |
2279 | * @rx_ring: ring to free buffers from | |
1da177e4 LT |
2280 | **/ |
2281 | ||
2282 | static void | |
581d708e MC |
2283 | e1000_clean_rx_ring(struct e1000_adapter *adapter, |
2284 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 2285 | { |
1da177e4 | 2286 | struct e1000_buffer *buffer_info; |
2d7edb92 MC |
2287 | struct e1000_ps_page *ps_page; |
2288 | struct e1000_ps_page_dma *ps_page_dma; | |
1da177e4 LT |
2289 | struct pci_dev *pdev = adapter->pdev; |
2290 | unsigned long size; | |
2d7edb92 | 2291 | unsigned int i, j; |
1da177e4 LT |
2292 | |
2293 | /* Free all the Rx ring sk_buffs */ | |
96838a40 | 2294 | for (i = 0; i < rx_ring->count; i++) { |
1da177e4 | 2295 | buffer_info = &rx_ring->buffer_info[i]; |
96838a40 | 2296 | if (buffer_info->skb) { |
1da177e4 LT |
2297 | pci_unmap_single(pdev, |
2298 | buffer_info->dma, | |
2299 | buffer_info->length, | |
2300 | PCI_DMA_FROMDEVICE); | |
2301 | ||
2302 | dev_kfree_skb(buffer_info->skb); | |
2303 | buffer_info->skb = NULL; | |
997f5cbd JK |
2304 | } |
2305 | ps_page = &rx_ring->ps_page[i]; | |
2306 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
2307 | for (j = 0; j < adapter->rx_ps_pages; j++) { | |
2308 | if (!ps_page->ps_page[j]) break; | |
2309 | pci_unmap_page(pdev, | |
2310 | ps_page_dma->ps_page_dma[j], | |
2311 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
2312 | ps_page_dma->ps_page_dma[j] = 0; | |
2313 | put_page(ps_page->ps_page[j]); | |
2314 | ps_page->ps_page[j] = NULL; | |
1da177e4 LT |
2315 | } |
2316 | } | |
2317 | ||
2318 | size = sizeof(struct e1000_buffer) * rx_ring->count; | |
2319 | memset(rx_ring->buffer_info, 0, size); | |
2d7edb92 MC |
2320 | size = sizeof(struct e1000_ps_page) * rx_ring->count; |
2321 | memset(rx_ring->ps_page, 0, size); | |
2322 | size = sizeof(struct e1000_ps_page_dma) * rx_ring->count; | |
2323 | memset(rx_ring->ps_page_dma, 0, size); | |
1da177e4 LT |
2324 | |
2325 | /* Zero out the descriptor ring */ | |
2326 | ||
2327 | memset(rx_ring->desc, 0, rx_ring->size); | |
2328 | ||
2329 | rx_ring->next_to_clean = 0; | |
2330 | rx_ring->next_to_use = 0; | |
2331 | ||
581d708e MC |
2332 | writel(0, adapter->hw.hw_addr + rx_ring->rdh); |
2333 | writel(0, adapter->hw.hw_addr + rx_ring->rdt); | |
2334 | } | |
2335 | ||
2336 | /** | |
2337 | * e1000_clean_all_rx_rings - Free Rx Buffers for all queues | |
2338 | * @adapter: board private structure | |
2339 | **/ | |
2340 | ||
2341 | static void | |
2342 | e1000_clean_all_rx_rings(struct e1000_adapter *adapter) | |
2343 | { | |
2344 | int i; | |
2345 | ||
f56799ea | 2346 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e | 2347 | e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]); |
1da177e4 LT |
2348 | } |
2349 | ||
2350 | /* The 82542 2.0 (revision 2) needs to have the receive unit in reset | |
2351 | * and memory write and invalidate disabled for certain operations | |
2352 | */ | |
2353 | static void | |
2354 | e1000_enter_82542_rst(struct e1000_adapter *adapter) | |
2355 | { | |
2356 | struct net_device *netdev = adapter->netdev; | |
406874a7 | 2357 | u32 rctl; |
1da177e4 LT |
2358 | |
2359 | e1000_pci_clear_mwi(&adapter->hw); | |
2360 | ||
2361 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
2362 | rctl |= E1000_RCTL_RST; | |
2363 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2364 | E1000_WRITE_FLUSH(&adapter->hw); | |
2365 | mdelay(5); | |
2366 | ||
96838a40 | 2367 | if (netif_running(netdev)) |
581d708e | 2368 | e1000_clean_all_rx_rings(adapter); |
1da177e4 LT |
2369 | } |
2370 | ||
2371 | static void | |
2372 | e1000_leave_82542_rst(struct e1000_adapter *adapter) | |
2373 | { | |
2374 | struct net_device *netdev = adapter->netdev; | |
406874a7 | 2375 | u32 rctl; |
1da177e4 LT |
2376 | |
2377 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
2378 | rctl &= ~E1000_RCTL_RST; | |
2379 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2380 | E1000_WRITE_FLUSH(&adapter->hw); | |
2381 | mdelay(5); | |
2382 | ||
96838a40 | 2383 | if (adapter->hw.pci_cmd_word & PCI_COMMAND_INVALIDATE) |
1da177e4 LT |
2384 | e1000_pci_set_mwi(&adapter->hw); |
2385 | ||
96838a40 | 2386 | if (netif_running(netdev)) { |
72d64a43 JK |
2387 | /* No need to loop, because 82542 supports only 1 queue */ |
2388 | struct e1000_rx_ring *ring = &adapter->rx_ring[0]; | |
7c4d3367 | 2389 | e1000_configure_rx(adapter); |
72d64a43 | 2390 | adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring)); |
1da177e4 LT |
2391 | } |
2392 | } | |
2393 | ||
2394 | /** | |
2395 | * e1000_set_mac - Change the Ethernet Address of the NIC | |
2396 | * @netdev: network interface device structure | |
2397 | * @p: pointer to an address structure | |
2398 | * | |
2399 | * Returns 0 on success, negative on failure | |
2400 | **/ | |
2401 | ||
2402 | static int | |
2403 | e1000_set_mac(struct net_device *netdev, void *p) | |
2404 | { | |
60490fe0 | 2405 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2406 | struct sockaddr *addr = p; |
2407 | ||
96838a40 | 2408 | if (!is_valid_ether_addr(addr->sa_data)) |
1da177e4 LT |
2409 | return -EADDRNOTAVAIL; |
2410 | ||
2411 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2412 | ||
96838a40 | 2413 | if (adapter->hw.mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2414 | e1000_enter_82542_rst(adapter); |
2415 | ||
2416 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
2417 | memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); | |
2418 | ||
2419 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0); | |
2420 | ||
868d5309 MC |
2421 | /* With 82571 controllers, LAA may be overwritten (with the default) |
2422 | * due to controller reset from the other port. */ | |
2423 | if (adapter->hw.mac_type == e1000_82571) { | |
2424 | /* activate the work around */ | |
2425 | adapter->hw.laa_is_present = 1; | |
2426 | ||
96838a40 JB |
2427 | /* Hold a copy of the LAA in RAR[14] This is done so that |
2428 | * between the time RAR[0] gets clobbered and the time it | |
2429 | * gets fixed (in e1000_watchdog), the actual LAA is in one | |
868d5309 | 2430 | * of the RARs and no incoming packets directed to this port |
96838a40 | 2431 | * are dropped. Eventaully the LAA will be in RAR[0] and |
868d5309 | 2432 | * RAR[14] */ |
96838a40 | 2433 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, |
868d5309 MC |
2434 | E1000_RAR_ENTRIES - 1); |
2435 | } | |
2436 | ||
96838a40 | 2437 | if (adapter->hw.mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2438 | e1000_leave_82542_rst(adapter); |
2439 | ||
2440 | return 0; | |
2441 | } | |
2442 | ||
2443 | /** | |
db0ce50d | 2444 | * e1000_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set |
1da177e4 LT |
2445 | * @netdev: network interface device structure |
2446 | * | |
db0ce50d PM |
2447 | * The set_rx_mode entry point is called whenever the unicast or multicast |
2448 | * address lists or the network interface flags are updated. This routine is | |
2449 | * responsible for configuring the hardware for proper unicast, multicast, | |
1da177e4 LT |
2450 | * promiscuous mode, and all-multi behavior. |
2451 | **/ | |
2452 | ||
2453 | static void | |
db0ce50d | 2454 | e1000_set_rx_mode(struct net_device *netdev) |
1da177e4 | 2455 | { |
60490fe0 | 2456 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 2457 | struct e1000_hw *hw = &adapter->hw; |
db0ce50d PM |
2458 | struct dev_addr_list *uc_ptr; |
2459 | struct dev_addr_list *mc_ptr; | |
406874a7 JP |
2460 | u32 rctl; |
2461 | u32 hash_value; | |
868d5309 | 2462 | int i, rar_entries = E1000_RAR_ENTRIES; |
cd94dd0b AK |
2463 | int mta_reg_count = (hw->mac_type == e1000_ich8lan) ? |
2464 | E1000_NUM_MTA_REGISTERS_ICH8LAN : | |
2465 | E1000_NUM_MTA_REGISTERS; | |
2466 | ||
2467 | if (adapter->hw.mac_type == e1000_ich8lan) | |
2468 | rar_entries = E1000_RAR_ENTRIES_ICH8LAN; | |
1da177e4 | 2469 | |
868d5309 MC |
2470 | /* reserve RAR[14] for LAA over-write work-around */ |
2471 | if (adapter->hw.mac_type == e1000_82571) | |
2472 | rar_entries--; | |
1da177e4 | 2473 | |
2648345f MC |
2474 | /* Check for Promiscuous and All Multicast modes */ |
2475 | ||
1da177e4 LT |
2476 | rctl = E1000_READ_REG(hw, RCTL); |
2477 | ||
96838a40 | 2478 | if (netdev->flags & IFF_PROMISC) { |
1da177e4 | 2479 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
96838a40 | 2480 | } else if (netdev->flags & IFF_ALLMULTI) { |
1da177e4 | 2481 | rctl |= E1000_RCTL_MPE; |
1da177e4 | 2482 | } else { |
db0ce50d PM |
2483 | rctl &= ~E1000_RCTL_MPE; |
2484 | } | |
2485 | ||
2486 | uc_ptr = NULL; | |
2487 | if (netdev->uc_count > rar_entries - 1) { | |
2488 | rctl |= E1000_RCTL_UPE; | |
2489 | } else if (!(netdev->flags & IFF_PROMISC)) { | |
2490 | rctl &= ~E1000_RCTL_UPE; | |
2491 | uc_ptr = netdev->uc_list; | |
1da177e4 LT |
2492 | } |
2493 | ||
2494 | E1000_WRITE_REG(hw, RCTL, rctl); | |
2495 | ||
2496 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2497 | ||
96838a40 | 2498 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2499 | e1000_enter_82542_rst(adapter); |
2500 | ||
db0ce50d PM |
2501 | /* load the first 14 addresses into the exact filters 1-14. Unicast |
2502 | * addresses take precedence to avoid disabling unicast filtering | |
2503 | * when possible. | |
2504 | * | |
1da177e4 LT |
2505 | * RAR 0 is used for the station MAC adddress |
2506 | * if there are not 14 addresses, go ahead and clear the filters | |
868d5309 | 2507 | * -- with 82571 controllers only 0-13 entries are filled here |
1da177e4 LT |
2508 | */ |
2509 | mc_ptr = netdev->mc_list; | |
2510 | ||
96838a40 | 2511 | for (i = 1; i < rar_entries; i++) { |
db0ce50d PM |
2512 | if (uc_ptr) { |
2513 | e1000_rar_set(hw, uc_ptr->da_addr, i); | |
2514 | uc_ptr = uc_ptr->next; | |
2515 | } else if (mc_ptr) { | |
2516 | e1000_rar_set(hw, mc_ptr->da_addr, i); | |
1da177e4 LT |
2517 | mc_ptr = mc_ptr->next; |
2518 | } else { | |
2519 | E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); | |
4ca213a6 | 2520 | E1000_WRITE_FLUSH(hw); |
1da177e4 | 2521 | E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); |
4ca213a6 | 2522 | E1000_WRITE_FLUSH(hw); |
1da177e4 LT |
2523 | } |
2524 | } | |
db0ce50d | 2525 | WARN_ON(uc_ptr != NULL); |
1da177e4 LT |
2526 | |
2527 | /* clear the old settings from the multicast hash table */ | |
2528 | ||
cd94dd0b | 2529 | for (i = 0; i < mta_reg_count; i++) { |
1da177e4 | 2530 | E1000_WRITE_REG_ARRAY(hw, MTA, i, 0); |
4ca213a6 AK |
2531 | E1000_WRITE_FLUSH(hw); |
2532 | } | |
1da177e4 LT |
2533 | |
2534 | /* load any remaining addresses into the hash table */ | |
2535 | ||
96838a40 | 2536 | for (; mc_ptr; mc_ptr = mc_ptr->next) { |
db0ce50d | 2537 | hash_value = e1000_hash_mc_addr(hw, mc_ptr->da_addr); |
1da177e4 LT |
2538 | e1000_mta_set(hw, hash_value); |
2539 | } | |
2540 | ||
96838a40 | 2541 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 | 2542 | e1000_leave_82542_rst(adapter); |
1da177e4 LT |
2543 | } |
2544 | ||
2545 | /* Need to wait a few seconds after link up to get diagnostic information from | |
2546 | * the phy */ | |
2547 | ||
2548 | static void | |
2549 | e1000_update_phy_info(unsigned long data) | |
2550 | { | |
2551 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
2552 | e1000_phy_get_info(&adapter->hw, &adapter->phy_info); | |
2553 | } | |
2554 | ||
2555 | /** | |
2556 | * e1000_82547_tx_fifo_stall - Timer Call-back | |
2557 | * @data: pointer to adapter cast into an unsigned long | |
2558 | **/ | |
2559 | ||
2560 | static void | |
2561 | e1000_82547_tx_fifo_stall(unsigned long data) | |
2562 | { | |
2563 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
2564 | struct net_device *netdev = adapter->netdev; | |
406874a7 | 2565 | u32 tctl; |
1da177e4 | 2566 | |
96838a40 JB |
2567 | if (atomic_read(&adapter->tx_fifo_stall)) { |
2568 | if ((E1000_READ_REG(&adapter->hw, TDT) == | |
1da177e4 LT |
2569 | E1000_READ_REG(&adapter->hw, TDH)) && |
2570 | (E1000_READ_REG(&adapter->hw, TDFT) == | |
2571 | E1000_READ_REG(&adapter->hw, TDFH)) && | |
2572 | (E1000_READ_REG(&adapter->hw, TDFTS) == | |
2573 | E1000_READ_REG(&adapter->hw, TDFHS))) { | |
2574 | tctl = E1000_READ_REG(&adapter->hw, TCTL); | |
2575 | E1000_WRITE_REG(&adapter->hw, TCTL, | |
2576 | tctl & ~E1000_TCTL_EN); | |
2577 | E1000_WRITE_REG(&adapter->hw, TDFT, | |
2578 | adapter->tx_head_addr); | |
2579 | E1000_WRITE_REG(&adapter->hw, TDFH, | |
2580 | adapter->tx_head_addr); | |
2581 | E1000_WRITE_REG(&adapter->hw, TDFTS, | |
2582 | adapter->tx_head_addr); | |
2583 | E1000_WRITE_REG(&adapter->hw, TDFHS, | |
2584 | adapter->tx_head_addr); | |
2585 | E1000_WRITE_REG(&adapter->hw, TCTL, tctl); | |
2586 | E1000_WRITE_FLUSH(&adapter->hw); | |
2587 | ||
2588 | adapter->tx_fifo_head = 0; | |
2589 | atomic_set(&adapter->tx_fifo_stall, 0); | |
2590 | netif_wake_queue(netdev); | |
2591 | } else { | |
2592 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); | |
2593 | } | |
2594 | } | |
2595 | } | |
2596 | ||
2597 | /** | |
2598 | * e1000_watchdog - Timer Call-back | |
2599 | * @data: pointer to adapter cast into an unsigned long | |
2600 | **/ | |
2601 | static void | |
2602 | e1000_watchdog(unsigned long data) | |
2603 | { | |
2604 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
1da177e4 | 2605 | struct net_device *netdev = adapter->netdev; |
545c67c0 | 2606 | struct e1000_tx_ring *txdr = adapter->tx_ring; |
406874a7 JP |
2607 | u32 link, tctl; |
2608 | s32 ret_val; | |
cd94dd0b AK |
2609 | |
2610 | ret_val = e1000_check_for_link(&adapter->hw); | |
2611 | if ((ret_val == E1000_ERR_PHY) && | |
2612 | (adapter->hw.phy_type == e1000_phy_igp_3) && | |
2613 | (E1000_READ_REG(&adapter->hw, CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) { | |
2614 | /* See e1000_kumeran_lock_loss_workaround() */ | |
2615 | DPRINTK(LINK, INFO, | |
2616 | "Gigabit has been disabled, downgrading speed\n"); | |
2617 | } | |
90fb5135 | 2618 | |
2d7edb92 MC |
2619 | if (adapter->hw.mac_type == e1000_82573) { |
2620 | e1000_enable_tx_pkt_filtering(&adapter->hw); | |
96838a40 | 2621 | if (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id) |
2d7edb92 | 2622 | e1000_update_mng_vlan(adapter); |
96838a40 | 2623 | } |
1da177e4 | 2624 | |
96838a40 | 2625 | if ((adapter->hw.media_type == e1000_media_type_internal_serdes) && |
1da177e4 LT |
2626 | !(E1000_READ_REG(&adapter->hw, TXCW) & E1000_TXCW_ANE)) |
2627 | link = !adapter->hw.serdes_link_down; | |
2628 | else | |
2629 | link = E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU; | |
2630 | ||
96838a40 JB |
2631 | if (link) { |
2632 | if (!netif_carrier_ok(netdev)) { | |
406874a7 | 2633 | u32 ctrl; |
c3033b01 | 2634 | bool txb2b = true; |
1da177e4 LT |
2635 | e1000_get_speed_and_duplex(&adapter->hw, |
2636 | &adapter->link_speed, | |
2637 | &adapter->link_duplex); | |
2638 | ||
9669f53b AK |
2639 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); |
2640 | DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s, " | |
2641 | "Flow Control: %s\n", | |
2642 | adapter->link_speed, | |
2643 | adapter->link_duplex == FULL_DUPLEX ? | |
2644 | "Full Duplex" : "Half Duplex", | |
2645 | ((ctrl & E1000_CTRL_TFCE) && (ctrl & | |
2646 | E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl & | |
2647 | E1000_CTRL_RFCE) ? "RX" : ((ctrl & | |
2648 | E1000_CTRL_TFCE) ? "TX" : "None" ))); | |
1da177e4 | 2649 | |
7e6c9861 JK |
2650 | /* tweak tx_queue_len according to speed/duplex |
2651 | * and adjust the timeout factor */ | |
66a2b0a3 JK |
2652 | netdev->tx_queue_len = adapter->tx_queue_len; |
2653 | adapter->tx_timeout_factor = 1; | |
7e6c9861 JK |
2654 | switch (adapter->link_speed) { |
2655 | case SPEED_10: | |
c3033b01 | 2656 | txb2b = false; |
7e6c9861 JK |
2657 | netdev->tx_queue_len = 10; |
2658 | adapter->tx_timeout_factor = 8; | |
2659 | break; | |
2660 | case SPEED_100: | |
c3033b01 | 2661 | txb2b = false; |
7e6c9861 JK |
2662 | netdev->tx_queue_len = 100; |
2663 | /* maybe add some timeout factor ? */ | |
2664 | break; | |
2665 | } | |
2666 | ||
fe7fe28e | 2667 | if ((adapter->hw.mac_type == e1000_82571 || |
7e6c9861 | 2668 | adapter->hw.mac_type == e1000_82572) && |
c3033b01 | 2669 | !txb2b) { |
406874a7 | 2670 | u32 tarc0; |
7e6c9861 | 2671 | tarc0 = E1000_READ_REG(&adapter->hw, TARC0); |
90fb5135 | 2672 | tarc0 &= ~(1 << 21); |
7e6c9861 JK |
2673 | E1000_WRITE_REG(&adapter->hw, TARC0, tarc0); |
2674 | } | |
90fb5135 | 2675 | |
7e6c9861 JK |
2676 | /* disable TSO for pcie and 10/100 speeds, to avoid |
2677 | * some hardware issues */ | |
2678 | if (!adapter->tso_force && | |
2679 | adapter->hw.bus_type == e1000_bus_type_pci_express){ | |
66a2b0a3 JK |
2680 | switch (adapter->link_speed) { |
2681 | case SPEED_10: | |
66a2b0a3 | 2682 | case SPEED_100: |
7e6c9861 JK |
2683 | DPRINTK(PROBE,INFO, |
2684 | "10/100 speed: disabling TSO\n"); | |
2685 | netdev->features &= ~NETIF_F_TSO; | |
87ca4e5b | 2686 | netdev->features &= ~NETIF_F_TSO6; |
7e6c9861 JK |
2687 | break; |
2688 | case SPEED_1000: | |
2689 | netdev->features |= NETIF_F_TSO; | |
87ca4e5b | 2690 | netdev->features |= NETIF_F_TSO6; |
7e6c9861 JK |
2691 | break; |
2692 | default: | |
2693 | /* oops */ | |
66a2b0a3 JK |
2694 | break; |
2695 | } | |
2696 | } | |
7e6c9861 JK |
2697 | |
2698 | /* enable transmits in the hardware, need to do this | |
2699 | * after setting TARC0 */ | |
2700 | tctl = E1000_READ_REG(&adapter->hw, TCTL); | |
2701 | tctl |= E1000_TCTL_EN; | |
2702 | E1000_WRITE_REG(&adapter->hw, TCTL, tctl); | |
66a2b0a3 | 2703 | |
1da177e4 LT |
2704 | netif_carrier_on(netdev); |
2705 | netif_wake_queue(netdev); | |
56e1393f | 2706 | mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ)); |
1da177e4 | 2707 | adapter->smartspeed = 0; |
bb8e3311 JG |
2708 | } else { |
2709 | /* make sure the receive unit is started */ | |
2710 | if (adapter->hw.rx_needs_kicking) { | |
2711 | struct e1000_hw *hw = &adapter->hw; | |
406874a7 | 2712 | u32 rctl = E1000_READ_REG(hw, RCTL); |
bb8e3311 JG |
2713 | E1000_WRITE_REG(hw, RCTL, rctl | E1000_RCTL_EN); |
2714 | } | |
1da177e4 LT |
2715 | } |
2716 | } else { | |
96838a40 | 2717 | if (netif_carrier_ok(netdev)) { |
1da177e4 LT |
2718 | adapter->link_speed = 0; |
2719 | adapter->link_duplex = 0; | |
2720 | DPRINTK(LINK, INFO, "NIC Link is Down\n"); | |
2721 | netif_carrier_off(netdev); | |
2722 | netif_stop_queue(netdev); | |
56e1393f | 2723 | mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ)); |
87041639 JK |
2724 | |
2725 | /* 80003ES2LAN workaround-- | |
2726 | * For packet buffer work-around on link down event; | |
2727 | * disable receives in the ISR and | |
2728 | * reset device here in the watchdog | |
2729 | */ | |
8fc897b0 | 2730 | if (adapter->hw.mac_type == e1000_80003es2lan) |
87041639 JK |
2731 | /* reset device */ |
2732 | schedule_work(&adapter->reset_task); | |
1da177e4 LT |
2733 | } |
2734 | ||
2735 | e1000_smartspeed(adapter); | |
2736 | } | |
2737 | ||
2738 | e1000_update_stats(adapter); | |
2739 | ||
2740 | adapter->hw.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; | |
2741 | adapter->tpt_old = adapter->stats.tpt; | |
2742 | adapter->hw.collision_delta = adapter->stats.colc - adapter->colc_old; | |
2743 | adapter->colc_old = adapter->stats.colc; | |
2744 | ||
2745 | adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; | |
2746 | adapter->gorcl_old = adapter->stats.gorcl; | |
2747 | adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; | |
2748 | adapter->gotcl_old = adapter->stats.gotcl; | |
2749 | ||
2750 | e1000_update_adaptive(&adapter->hw); | |
2751 | ||
f56799ea | 2752 | if (!netif_carrier_ok(netdev)) { |
581d708e | 2753 | if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { |
1da177e4 LT |
2754 | /* We've lost link, so the controller stops DMA, |
2755 | * but we've got queued Tx work that's never going | |
2756 | * to get done, so reset controller to flush Tx. | |
2757 | * (Do the reset outside of interrupt context). */ | |
87041639 JK |
2758 | adapter->tx_timeout_count++; |
2759 | schedule_work(&adapter->reset_task); | |
1da177e4 LT |
2760 | } |
2761 | } | |
2762 | ||
1da177e4 LT |
2763 | /* Cause software interrupt to ensure rx ring is cleaned */ |
2764 | E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_RXDMT0); | |
2765 | ||
2648345f | 2766 | /* Force detection of hung controller every watchdog period */ |
c3033b01 | 2767 | adapter->detect_tx_hung = true; |
1da177e4 | 2768 | |
96838a40 | 2769 | /* With 82571 controllers, LAA may be overwritten due to controller |
868d5309 MC |
2770 | * reset from the other port. Set the appropriate LAA in RAR[0] */ |
2771 | if (adapter->hw.mac_type == e1000_82571 && adapter->hw.laa_is_present) | |
2772 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0); | |
2773 | ||
1da177e4 | 2774 | /* Reset the timer */ |
56e1393f | 2775 | mod_timer(&adapter->watchdog_timer, round_jiffies(jiffies + 2 * HZ)); |
1da177e4 LT |
2776 | } |
2777 | ||
835bb129 JB |
2778 | enum latency_range { |
2779 | lowest_latency = 0, | |
2780 | low_latency = 1, | |
2781 | bulk_latency = 2, | |
2782 | latency_invalid = 255 | |
2783 | }; | |
2784 | ||
2785 | /** | |
2786 | * e1000_update_itr - update the dynamic ITR value based on statistics | |
2787 | * Stores a new ITR value based on packets and byte | |
2788 | * counts during the last interrupt. The advantage of per interrupt | |
2789 | * computation is faster updates and more accurate ITR for the current | |
2790 | * traffic pattern. Constants in this function were computed | |
2791 | * based on theoretical maximum wire speed and thresholds were set based | |
2792 | * on testing data as well as attempting to minimize response time | |
2793 | * while increasing bulk throughput. | |
2794 | * this functionality is controlled by the InterruptThrottleRate module | |
2795 | * parameter (see e1000_param.c) | |
2796 | * @adapter: pointer to adapter | |
2797 | * @itr_setting: current adapter->itr | |
2798 | * @packets: the number of packets during this measurement interval | |
2799 | * @bytes: the number of bytes during this measurement interval | |
2800 | **/ | |
2801 | static unsigned int e1000_update_itr(struct e1000_adapter *adapter, | |
406874a7 | 2802 | u16 itr_setting, |
835bb129 JB |
2803 | int packets, |
2804 | int bytes) | |
2805 | { | |
2806 | unsigned int retval = itr_setting; | |
2807 | struct e1000_hw *hw = &adapter->hw; | |
2808 | ||
2809 | if (unlikely(hw->mac_type < e1000_82540)) | |
2810 | goto update_itr_done; | |
2811 | ||
2812 | if (packets == 0) | |
2813 | goto update_itr_done; | |
2814 | ||
835bb129 JB |
2815 | switch (itr_setting) { |
2816 | case lowest_latency: | |
2b65326e JB |
2817 | /* jumbo frames get bulk treatment*/ |
2818 | if (bytes/packets > 8000) | |
2819 | retval = bulk_latency; | |
2820 | else if ((packets < 5) && (bytes > 512)) | |
835bb129 JB |
2821 | retval = low_latency; |
2822 | break; | |
2823 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
2824 | if (bytes > 10000) { | |
2b65326e JB |
2825 | /* jumbo frames need bulk latency setting */ |
2826 | if (bytes/packets > 8000) | |
2827 | retval = bulk_latency; | |
2828 | else if ((packets < 10) || ((bytes/packets) > 1200)) | |
835bb129 JB |
2829 | retval = bulk_latency; |
2830 | else if ((packets > 35)) | |
2831 | retval = lowest_latency; | |
2b65326e JB |
2832 | } else if (bytes/packets > 2000) |
2833 | retval = bulk_latency; | |
2834 | else if (packets <= 2 && bytes < 512) | |
835bb129 JB |
2835 | retval = lowest_latency; |
2836 | break; | |
2837 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
2838 | if (bytes > 25000) { | |
2839 | if (packets > 35) | |
2840 | retval = low_latency; | |
2b65326e JB |
2841 | } else if (bytes < 6000) { |
2842 | retval = low_latency; | |
835bb129 JB |
2843 | } |
2844 | break; | |
2845 | } | |
2846 | ||
2847 | update_itr_done: | |
2848 | return retval; | |
2849 | } | |
2850 | ||
2851 | static void e1000_set_itr(struct e1000_adapter *adapter) | |
2852 | { | |
2853 | struct e1000_hw *hw = &adapter->hw; | |
406874a7 JP |
2854 | u16 current_itr; |
2855 | u32 new_itr = adapter->itr; | |
835bb129 JB |
2856 | |
2857 | if (unlikely(hw->mac_type < e1000_82540)) | |
2858 | return; | |
2859 | ||
2860 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ | |
2861 | if (unlikely(adapter->link_speed != SPEED_1000)) { | |
2862 | current_itr = 0; | |
2863 | new_itr = 4000; | |
2864 | goto set_itr_now; | |
2865 | } | |
2866 | ||
2867 | adapter->tx_itr = e1000_update_itr(adapter, | |
2868 | adapter->tx_itr, | |
2869 | adapter->total_tx_packets, | |
2870 | adapter->total_tx_bytes); | |
2b65326e JB |
2871 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
2872 | if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) | |
2873 | adapter->tx_itr = low_latency; | |
2874 | ||
835bb129 JB |
2875 | adapter->rx_itr = e1000_update_itr(adapter, |
2876 | adapter->rx_itr, | |
2877 | adapter->total_rx_packets, | |
2878 | adapter->total_rx_bytes); | |
2b65326e JB |
2879 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
2880 | if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) | |
2881 | adapter->rx_itr = low_latency; | |
835bb129 JB |
2882 | |
2883 | current_itr = max(adapter->rx_itr, adapter->tx_itr); | |
2884 | ||
835bb129 JB |
2885 | switch (current_itr) { |
2886 | /* counts and packets in update_itr are dependent on these numbers */ | |
2887 | case lowest_latency: | |
2888 | new_itr = 70000; | |
2889 | break; | |
2890 | case low_latency: | |
2891 | new_itr = 20000; /* aka hwitr = ~200 */ | |
2892 | break; | |
2893 | case bulk_latency: | |
2894 | new_itr = 4000; | |
2895 | break; | |
2896 | default: | |
2897 | break; | |
2898 | } | |
2899 | ||
2900 | set_itr_now: | |
2901 | if (new_itr != adapter->itr) { | |
2902 | /* this attempts to bias the interrupt rate towards Bulk | |
2903 | * by adding intermediate steps when interrupt rate is | |
2904 | * increasing */ | |
2905 | new_itr = new_itr > adapter->itr ? | |
2906 | min(adapter->itr + (new_itr >> 2), new_itr) : | |
2907 | new_itr; | |
2908 | adapter->itr = new_itr; | |
2909 | E1000_WRITE_REG(hw, ITR, 1000000000 / (new_itr * 256)); | |
2910 | } | |
2911 | ||
2912 | return; | |
2913 | } | |
2914 | ||
1da177e4 LT |
2915 | #define E1000_TX_FLAGS_CSUM 0x00000001 |
2916 | #define E1000_TX_FLAGS_VLAN 0x00000002 | |
2917 | #define E1000_TX_FLAGS_TSO 0x00000004 | |
2d7edb92 | 2918 | #define E1000_TX_FLAGS_IPV4 0x00000008 |
1da177e4 LT |
2919 | #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
2920 | #define E1000_TX_FLAGS_VLAN_SHIFT 16 | |
2921 | ||
e619d523 | 2922 | static int |
581d708e MC |
2923 | e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2924 | struct sk_buff *skb) | |
1da177e4 | 2925 | { |
1da177e4 | 2926 | struct e1000_context_desc *context_desc; |
545c67c0 | 2927 | struct e1000_buffer *buffer_info; |
1da177e4 | 2928 | unsigned int i; |
406874a7 JP |
2929 | u32 cmd_length = 0; |
2930 | u16 ipcse = 0, tucse, mss; | |
2931 | u8 ipcss, ipcso, tucss, tucso, hdr_len; | |
1da177e4 LT |
2932 | int err; |
2933 | ||
89114afd | 2934 | if (skb_is_gso(skb)) { |
1da177e4 LT |
2935 | if (skb_header_cloned(skb)) { |
2936 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
2937 | if (err) | |
2938 | return err; | |
2939 | } | |
2940 | ||
ab6a5bb6 | 2941 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
7967168c | 2942 | mss = skb_shinfo(skb)->gso_size; |
60828236 | 2943 | if (skb->protocol == htons(ETH_P_IP)) { |
eddc9ec5 ACM |
2944 | struct iphdr *iph = ip_hdr(skb); |
2945 | iph->tot_len = 0; | |
2946 | iph->check = 0; | |
aa8223c7 ACM |
2947 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
2948 | iph->daddr, 0, | |
2949 | IPPROTO_TCP, | |
2950 | 0); | |
2d7edb92 | 2951 | cmd_length = E1000_TXD_CMD_IP; |
ea2ae17d | 2952 | ipcse = skb_transport_offset(skb) - 1; |
e15fdd03 | 2953 | } else if (skb->protocol == htons(ETH_P_IPV6)) { |
0660e03f | 2954 | ipv6_hdr(skb)->payload_len = 0; |
aa8223c7 | 2955 | tcp_hdr(skb)->check = |
0660e03f ACM |
2956 | ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
2957 | &ipv6_hdr(skb)->daddr, | |
2958 | 0, IPPROTO_TCP, 0); | |
2d7edb92 | 2959 | ipcse = 0; |
2d7edb92 | 2960 | } |
bbe735e4 | 2961 | ipcss = skb_network_offset(skb); |
eddc9ec5 | 2962 | ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; |
ea2ae17d | 2963 | tucss = skb_transport_offset(skb); |
aa8223c7 | 2964 | tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
1da177e4 LT |
2965 | tucse = 0; |
2966 | ||
2967 | cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | | |
2d7edb92 | 2968 | E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
1da177e4 | 2969 | |
581d708e MC |
2970 | i = tx_ring->next_to_use; |
2971 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
545c67c0 | 2972 | buffer_info = &tx_ring->buffer_info[i]; |
1da177e4 LT |
2973 | |
2974 | context_desc->lower_setup.ip_fields.ipcss = ipcss; | |
2975 | context_desc->lower_setup.ip_fields.ipcso = ipcso; | |
2976 | context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); | |
2977 | context_desc->upper_setup.tcp_fields.tucss = tucss; | |
2978 | context_desc->upper_setup.tcp_fields.tucso = tucso; | |
2979 | context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); | |
2980 | context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); | |
2981 | context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; | |
2982 | context_desc->cmd_and_length = cpu_to_le32(cmd_length); | |
2983 | ||
545c67c0 | 2984 | buffer_info->time_stamp = jiffies; |
a9ebadd6 | 2985 | buffer_info->next_to_watch = i; |
545c67c0 | 2986 | |
581d708e MC |
2987 | if (++i == tx_ring->count) i = 0; |
2988 | tx_ring->next_to_use = i; | |
1da177e4 | 2989 | |
c3033b01 | 2990 | return true; |
1da177e4 | 2991 | } |
c3033b01 | 2992 | return false; |
1da177e4 LT |
2993 | } |
2994 | ||
c3033b01 | 2995 | static bool |
581d708e MC |
2996 | e1000_tx_csum(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2997 | struct sk_buff *skb) | |
1da177e4 LT |
2998 | { |
2999 | struct e1000_context_desc *context_desc; | |
545c67c0 | 3000 | struct e1000_buffer *buffer_info; |
1da177e4 | 3001 | unsigned int i; |
406874a7 | 3002 | u8 css; |
1da177e4 | 3003 | |
84fa7933 | 3004 | if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { |
ea2ae17d | 3005 | css = skb_transport_offset(skb); |
1da177e4 | 3006 | |
581d708e | 3007 | i = tx_ring->next_to_use; |
545c67c0 | 3008 | buffer_info = &tx_ring->buffer_info[i]; |
581d708e | 3009 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
1da177e4 | 3010 | |
f6c57baf | 3011 | context_desc->lower_setup.ip_config = 0; |
1da177e4 | 3012 | context_desc->upper_setup.tcp_fields.tucss = css; |
628592cc HX |
3013 | context_desc->upper_setup.tcp_fields.tucso = |
3014 | css + skb->csum_offset; | |
1da177e4 LT |
3015 | context_desc->upper_setup.tcp_fields.tucse = 0; |
3016 | context_desc->tcp_seg_setup.data = 0; | |
3017 | context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT); | |
3018 | ||
545c67c0 | 3019 | buffer_info->time_stamp = jiffies; |
a9ebadd6 | 3020 | buffer_info->next_to_watch = i; |
545c67c0 | 3021 | |
581d708e MC |
3022 | if (unlikely(++i == tx_ring->count)) i = 0; |
3023 | tx_ring->next_to_use = i; | |
1da177e4 | 3024 | |
c3033b01 | 3025 | return true; |
1da177e4 LT |
3026 | } |
3027 | ||
c3033b01 | 3028 | return false; |
1da177e4 LT |
3029 | } |
3030 | ||
3031 | #define E1000_MAX_TXD_PWR 12 | |
3032 | #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) | |
3033 | ||
e619d523 | 3034 | static int |
581d708e MC |
3035 | e1000_tx_map(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
3036 | struct sk_buff *skb, unsigned int first, unsigned int max_per_txd, | |
3037 | unsigned int nr_frags, unsigned int mss) | |
1da177e4 | 3038 | { |
1da177e4 LT |
3039 | struct e1000_buffer *buffer_info; |
3040 | unsigned int len = skb->len; | |
3041 | unsigned int offset = 0, size, count = 0, i; | |
3042 | unsigned int f; | |
3043 | len -= skb->data_len; | |
3044 | ||
3045 | i = tx_ring->next_to_use; | |
3046 | ||
96838a40 | 3047 | while (len) { |
1da177e4 LT |
3048 | buffer_info = &tx_ring->buffer_info[i]; |
3049 | size = min(len, max_per_txd); | |
fd803241 JK |
3050 | /* Workaround for Controller erratum -- |
3051 | * descriptor for non-tso packet in a linear SKB that follows a | |
3052 | * tso gets written back prematurely before the data is fully | |
0f15a8fa | 3053 | * DMA'd to the controller */ |
fd803241 | 3054 | if (!skb->data_len && tx_ring->last_tx_tso && |
89114afd | 3055 | !skb_is_gso(skb)) { |
fd803241 JK |
3056 | tx_ring->last_tx_tso = 0; |
3057 | size -= 4; | |
3058 | } | |
3059 | ||
1da177e4 LT |
3060 | /* Workaround for premature desc write-backs |
3061 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 3062 | if (unlikely(mss && !nr_frags && size == len && size > 8)) |
1da177e4 | 3063 | size -= 4; |
97338bde MC |
3064 | /* work-around for errata 10 and it applies |
3065 | * to all controllers in PCI-X mode | |
3066 | * The fix is to make sure that the first descriptor of a | |
3067 | * packet is smaller than 2048 - 16 - 16 (or 2016) bytes | |
3068 | */ | |
96838a40 | 3069 | if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && |
97338bde MC |
3070 | (size > 2015) && count == 0)) |
3071 | size = 2015; | |
96838a40 | 3072 | |
1da177e4 LT |
3073 | /* Workaround for potential 82544 hang in PCI-X. Avoid |
3074 | * terminating buffers within evenly-aligned dwords. */ | |
96838a40 | 3075 | if (unlikely(adapter->pcix_82544 && |
1da177e4 LT |
3076 | !((unsigned long)(skb->data + offset + size - 1) & 4) && |
3077 | size > 4)) | |
3078 | size -= 4; | |
3079 | ||
3080 | buffer_info->length = size; | |
3081 | buffer_info->dma = | |
3082 | pci_map_single(adapter->pdev, | |
3083 | skb->data + offset, | |
3084 | size, | |
3085 | PCI_DMA_TODEVICE); | |
3086 | buffer_info->time_stamp = jiffies; | |
a9ebadd6 | 3087 | buffer_info->next_to_watch = i; |
1da177e4 LT |
3088 | |
3089 | len -= size; | |
3090 | offset += size; | |
3091 | count++; | |
96838a40 | 3092 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
3093 | } |
3094 | ||
96838a40 | 3095 | for (f = 0; f < nr_frags; f++) { |
1da177e4 LT |
3096 | struct skb_frag_struct *frag; |
3097 | ||
3098 | frag = &skb_shinfo(skb)->frags[f]; | |
3099 | len = frag->size; | |
3100 | offset = frag->page_offset; | |
3101 | ||
96838a40 | 3102 | while (len) { |
1da177e4 LT |
3103 | buffer_info = &tx_ring->buffer_info[i]; |
3104 | size = min(len, max_per_txd); | |
1da177e4 LT |
3105 | /* Workaround for premature desc write-backs |
3106 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 3107 | if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) |
1da177e4 | 3108 | size -= 4; |
1da177e4 LT |
3109 | /* Workaround for potential 82544 hang in PCI-X. |
3110 | * Avoid terminating buffers within evenly-aligned | |
3111 | * dwords. */ | |
96838a40 | 3112 | if (unlikely(adapter->pcix_82544 && |
1da177e4 LT |
3113 | !((unsigned long)(frag->page+offset+size-1) & 4) && |
3114 | size > 4)) | |
3115 | size -= 4; | |
3116 | ||
3117 | buffer_info->length = size; | |
3118 | buffer_info->dma = | |
3119 | pci_map_page(adapter->pdev, | |
3120 | frag->page, | |
3121 | offset, | |
3122 | size, | |
3123 | PCI_DMA_TODEVICE); | |
3124 | buffer_info->time_stamp = jiffies; | |
a9ebadd6 | 3125 | buffer_info->next_to_watch = i; |
1da177e4 LT |
3126 | |
3127 | len -= size; | |
3128 | offset += size; | |
3129 | count++; | |
96838a40 | 3130 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
3131 | } |
3132 | } | |
3133 | ||
3134 | i = (i == 0) ? tx_ring->count - 1 : i - 1; | |
3135 | tx_ring->buffer_info[i].skb = skb; | |
3136 | tx_ring->buffer_info[first].next_to_watch = i; | |
3137 | ||
3138 | return count; | |
3139 | } | |
3140 | ||
e619d523 | 3141 | static void |
581d708e MC |
3142 | e1000_tx_queue(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
3143 | int tx_flags, int count) | |
1da177e4 | 3144 | { |
1da177e4 LT |
3145 | struct e1000_tx_desc *tx_desc = NULL; |
3146 | struct e1000_buffer *buffer_info; | |
406874a7 | 3147 | u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; |
1da177e4 LT |
3148 | unsigned int i; |
3149 | ||
96838a40 | 3150 | if (likely(tx_flags & E1000_TX_FLAGS_TSO)) { |
1da177e4 LT |
3151 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
3152 | E1000_TXD_CMD_TSE; | |
2d7edb92 MC |
3153 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
3154 | ||
96838a40 | 3155 | if (likely(tx_flags & E1000_TX_FLAGS_IPV4)) |
2d7edb92 | 3156 | txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
1da177e4 LT |
3157 | } |
3158 | ||
96838a40 | 3159 | if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) { |
1da177e4 LT |
3160 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
3161 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
3162 | } | |
3163 | ||
96838a40 | 3164 | if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { |
1da177e4 LT |
3165 | txd_lower |= E1000_TXD_CMD_VLE; |
3166 | txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); | |
3167 | } | |
3168 | ||
3169 | i = tx_ring->next_to_use; | |
3170 | ||
96838a40 | 3171 | while (count--) { |
1da177e4 LT |
3172 | buffer_info = &tx_ring->buffer_info[i]; |
3173 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
3174 | tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
3175 | tx_desc->lower.data = | |
3176 | cpu_to_le32(txd_lower | buffer_info->length); | |
3177 | tx_desc->upper.data = cpu_to_le32(txd_upper); | |
96838a40 | 3178 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
3179 | } |
3180 | ||
3181 | tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); | |
3182 | ||
3183 | /* Force memory writes to complete before letting h/w | |
3184 | * know there are new descriptors to fetch. (Only | |
3185 | * applicable for weak-ordered memory model archs, | |
3186 | * such as IA-64). */ | |
3187 | wmb(); | |
3188 | ||
3189 | tx_ring->next_to_use = i; | |
581d708e | 3190 | writel(i, adapter->hw.hw_addr + tx_ring->tdt); |
2ce9047f JB |
3191 | /* we need this if more than one processor can write to our tail |
3192 | * at a time, it syncronizes IO on IA64/Altix systems */ | |
3193 | mmiowb(); | |
1da177e4 LT |
3194 | } |
3195 | ||
3196 | /** | |
3197 | * 82547 workaround to avoid controller hang in half-duplex environment. | |
3198 | * The workaround is to avoid queuing a large packet that would span | |
3199 | * the internal Tx FIFO ring boundary by notifying the stack to resend | |
3200 | * the packet at a later time. This gives the Tx FIFO an opportunity to | |
3201 | * flush all packets. When that occurs, we reset the Tx FIFO pointers | |
3202 | * to the beginning of the Tx FIFO. | |
3203 | **/ | |
3204 | ||
3205 | #define E1000_FIFO_HDR 0x10 | |
3206 | #define E1000_82547_PAD_LEN 0x3E0 | |
3207 | ||
e619d523 | 3208 | static int |
1da177e4 LT |
3209 | e1000_82547_fifo_workaround(struct e1000_adapter *adapter, struct sk_buff *skb) |
3210 | { | |
406874a7 JP |
3211 | u32 fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; |
3212 | u32 skb_fifo_len = skb->len + E1000_FIFO_HDR; | |
1da177e4 | 3213 | |
9099cfb9 | 3214 | skb_fifo_len = ALIGN(skb_fifo_len, E1000_FIFO_HDR); |
1da177e4 | 3215 | |
96838a40 | 3216 | if (adapter->link_duplex != HALF_DUPLEX) |
1da177e4 LT |
3217 | goto no_fifo_stall_required; |
3218 | ||
96838a40 | 3219 | if (atomic_read(&adapter->tx_fifo_stall)) |
1da177e4 LT |
3220 | return 1; |
3221 | ||
96838a40 | 3222 | if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { |
1da177e4 LT |
3223 | atomic_set(&adapter->tx_fifo_stall, 1); |
3224 | return 1; | |
3225 | } | |
3226 | ||
3227 | no_fifo_stall_required: | |
3228 | adapter->tx_fifo_head += skb_fifo_len; | |
96838a40 | 3229 | if (adapter->tx_fifo_head >= adapter->tx_fifo_size) |
1da177e4 LT |
3230 | adapter->tx_fifo_head -= adapter->tx_fifo_size; |
3231 | return 0; | |
3232 | } | |
3233 | ||
2d7edb92 | 3234 | #define MINIMUM_DHCP_PACKET_SIZE 282 |
e619d523 | 3235 | static int |
2d7edb92 MC |
3236 | e1000_transfer_dhcp_info(struct e1000_adapter *adapter, struct sk_buff *skb) |
3237 | { | |
3238 | struct e1000_hw *hw = &adapter->hw; | |
406874a7 | 3239 | u16 length, offset; |
96838a40 JB |
3240 | if (vlan_tx_tag_present(skb)) { |
3241 | if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) && | |
2d7edb92 MC |
3242 | ( adapter->hw.mng_cookie.status & |
3243 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) ) | |
3244 | return 0; | |
3245 | } | |
20a44028 | 3246 | if (skb->len > MINIMUM_DHCP_PACKET_SIZE) { |
2d7edb92 | 3247 | struct ethhdr *eth = (struct ethhdr *) skb->data; |
96838a40 JB |
3248 | if ((htons(ETH_P_IP) == eth->h_proto)) { |
3249 | const struct iphdr *ip = | |
406874a7 | 3250 | (struct iphdr *)((u8 *)skb->data+14); |
96838a40 JB |
3251 | if (IPPROTO_UDP == ip->protocol) { |
3252 | struct udphdr *udp = | |
406874a7 | 3253 | (struct udphdr *)((u8 *)ip + |
2d7edb92 | 3254 | (ip->ihl << 2)); |
96838a40 | 3255 | if (ntohs(udp->dest) == 67) { |
406874a7 | 3256 | offset = (u8 *)udp + 8 - skb->data; |
2d7edb92 MC |
3257 | length = skb->len - offset; |
3258 | ||
3259 | return e1000_mng_write_dhcp_info(hw, | |
406874a7 | 3260 | (u8 *)udp + 8, |
2d7edb92 MC |
3261 | length); |
3262 | } | |
3263 | } | |
3264 | } | |
3265 | } | |
3266 | return 0; | |
3267 | } | |
3268 | ||
65c7973f JB |
3269 | static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) |
3270 | { | |
3271 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3272 | struct e1000_tx_ring *tx_ring = adapter->tx_ring; | |
3273 | ||
3274 | netif_stop_queue(netdev); | |
3275 | /* Herbert's original patch had: | |
3276 | * smp_mb__after_netif_stop_queue(); | |
3277 | * but since that doesn't exist yet, just open code it. */ | |
3278 | smp_mb(); | |
3279 | ||
3280 | /* We need to check again in a case another CPU has just | |
3281 | * made room available. */ | |
3282 | if (likely(E1000_DESC_UNUSED(tx_ring) < size)) | |
3283 | return -EBUSY; | |
3284 | ||
3285 | /* A reprieve! */ | |
3286 | netif_start_queue(netdev); | |
fcfb1224 | 3287 | ++adapter->restart_queue; |
65c7973f JB |
3288 | return 0; |
3289 | } | |
3290 | ||
3291 | static int e1000_maybe_stop_tx(struct net_device *netdev, | |
3292 | struct e1000_tx_ring *tx_ring, int size) | |
3293 | { | |
3294 | if (likely(E1000_DESC_UNUSED(tx_ring) >= size)) | |
3295 | return 0; | |
3296 | return __e1000_maybe_stop_tx(netdev, size); | |
3297 | } | |
3298 | ||
1da177e4 LT |
3299 | #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
3300 | static int | |
3301 | e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
3302 | { | |
60490fe0 | 3303 | struct e1000_adapter *adapter = netdev_priv(netdev); |
581d708e | 3304 | struct e1000_tx_ring *tx_ring; |
1da177e4 LT |
3305 | unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; |
3306 | unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; | |
3307 | unsigned int tx_flags = 0; | |
6d1e3aa7 | 3308 | unsigned int len = skb->len - skb->data_len; |
1da177e4 | 3309 | unsigned long flags; |
6d1e3aa7 KK |
3310 | unsigned int nr_frags; |
3311 | unsigned int mss; | |
1da177e4 | 3312 | int count = 0; |
76c224bc | 3313 | int tso; |
1da177e4 | 3314 | unsigned int f; |
1da177e4 | 3315 | |
65c7973f JB |
3316 | /* This goes back to the question of how to logically map a tx queue |
3317 | * to a flow. Right now, performance is impacted slightly negatively | |
3318 | * if using multiple tx queues. If the stack breaks away from a | |
3319 | * single qdisc implementation, we can look at this again. */ | |
581d708e | 3320 | tx_ring = adapter->tx_ring; |
24025e4e | 3321 | |
581d708e | 3322 | if (unlikely(skb->len <= 0)) { |
1da177e4 LT |
3323 | dev_kfree_skb_any(skb); |
3324 | return NETDEV_TX_OK; | |
3325 | } | |
3326 | ||
032fe6e9 JB |
3327 | /* 82571 and newer doesn't need the workaround that limited descriptor |
3328 | * length to 4kB */ | |
3329 | if (adapter->hw.mac_type >= e1000_82571) | |
3330 | max_per_txd = 8192; | |
3331 | ||
7967168c | 3332 | mss = skb_shinfo(skb)->gso_size; |
76c224bc | 3333 | /* The controller does a simple calculation to |
1da177e4 LT |
3334 | * make sure there is enough room in the FIFO before |
3335 | * initiating the DMA for each buffer. The calc is: | |
3336 | * 4 = ceil(buffer len/mss). To make sure we don't | |
3337 | * overrun the FIFO, adjust the max buffer len if mss | |
3338 | * drops. */ | |
96838a40 | 3339 | if (mss) { |
406874a7 | 3340 | u8 hdr_len; |
1da177e4 LT |
3341 | max_per_txd = min(mss << 2, max_per_txd); |
3342 | max_txd_pwr = fls(max_per_txd) - 1; | |
9a3056da | 3343 | |
90fb5135 AK |
3344 | /* TSO Workaround for 82571/2/3 Controllers -- if skb->data |
3345 | * points to just header, pull a few bytes of payload from | |
3346 | * frags into skb->data */ | |
ab6a5bb6 | 3347 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
6d1e3aa7 | 3348 | if (skb->data_len && hdr_len == len) { |
9f687888 JK |
3349 | switch (adapter->hw.mac_type) { |
3350 | unsigned int pull_size; | |
683a2aa3 HX |
3351 | case e1000_82544: |
3352 | /* Make sure we have room to chop off 4 bytes, | |
3353 | * and that the end alignment will work out to | |
3354 | * this hardware's requirements | |
3355 | * NOTE: this is a TSO only workaround | |
3356 | * if end byte alignment not correct move us | |
3357 | * into the next dword */ | |
27a884dc | 3358 | if ((unsigned long)(skb_tail_pointer(skb) - 1) & 4) |
683a2aa3 HX |
3359 | break; |
3360 | /* fall through */ | |
9f687888 JK |
3361 | case e1000_82571: |
3362 | case e1000_82572: | |
3363 | case e1000_82573: | |
cd94dd0b | 3364 | case e1000_ich8lan: |
9f687888 JK |
3365 | pull_size = min((unsigned int)4, skb->data_len); |
3366 | if (!__pskb_pull_tail(skb, pull_size)) { | |
a5eafce2 | 3367 | DPRINTK(DRV, ERR, |
9f687888 JK |
3368 | "__pskb_pull_tail failed.\n"); |
3369 | dev_kfree_skb_any(skb); | |
749dfc70 | 3370 | return NETDEV_TX_OK; |
9f687888 JK |
3371 | } |
3372 | len = skb->len - skb->data_len; | |
3373 | break; | |
3374 | default: | |
3375 | /* do nothing */ | |
3376 | break; | |
d74bbd3b | 3377 | } |
9a3056da | 3378 | } |
1da177e4 LT |
3379 | } |
3380 | ||
9a3056da | 3381 | /* reserve a descriptor for the offload context */ |
84fa7933 | 3382 | if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
1da177e4 | 3383 | count++; |
2648345f | 3384 | count++; |
fd803241 | 3385 | |
fd803241 | 3386 | /* Controller Erratum workaround */ |
89114afd | 3387 | if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb)) |
fd803241 | 3388 | count++; |
fd803241 | 3389 | |
1da177e4 LT |
3390 | count += TXD_USE_COUNT(len, max_txd_pwr); |
3391 | ||
96838a40 | 3392 | if (adapter->pcix_82544) |
1da177e4 LT |
3393 | count++; |
3394 | ||
96838a40 | 3395 | /* work-around for errata 10 and it applies to all controllers |
97338bde MC |
3396 | * in PCI-X mode, so add one more descriptor to the count |
3397 | */ | |
96838a40 | 3398 | if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && |
97338bde MC |
3399 | (len > 2015))) |
3400 | count++; | |
3401 | ||
1da177e4 | 3402 | nr_frags = skb_shinfo(skb)->nr_frags; |
96838a40 | 3403 | for (f = 0; f < nr_frags; f++) |
1da177e4 LT |
3404 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, |
3405 | max_txd_pwr); | |
96838a40 | 3406 | if (adapter->pcix_82544) |
1da177e4 LT |
3407 | count += nr_frags; |
3408 | ||
0f15a8fa JK |
3409 | |
3410 | if (adapter->hw.tx_pkt_filtering && | |
3411 | (adapter->hw.mac_type == e1000_82573)) | |
2d7edb92 MC |
3412 | e1000_transfer_dhcp_info(adapter, skb); |
3413 | ||
f50393fe | 3414 | if (!spin_trylock_irqsave(&tx_ring->tx_lock, flags)) |
581d708e | 3415 | /* Collision - tell upper layer to requeue */ |
581d708e | 3416 | return NETDEV_TX_LOCKED; |
1da177e4 LT |
3417 | |
3418 | /* need: count + 2 desc gap to keep tail from touching | |
3419 | * head, otherwise try next time */ | |
65c7973f | 3420 | if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2))) { |
581d708e | 3421 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
3422 | return NETDEV_TX_BUSY; |
3423 | } | |
3424 | ||
96838a40 JB |
3425 | if (unlikely(adapter->hw.mac_type == e1000_82547)) { |
3426 | if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) { | |
1da177e4 | 3427 | netif_stop_queue(netdev); |
1314bbf3 | 3428 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); |
581d708e | 3429 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
3430 | return NETDEV_TX_BUSY; |
3431 | } | |
3432 | } | |
3433 | ||
96838a40 | 3434 | if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) { |
1da177e4 LT |
3435 | tx_flags |= E1000_TX_FLAGS_VLAN; |
3436 | tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); | |
3437 | } | |
3438 | ||
581d708e | 3439 | first = tx_ring->next_to_use; |
96838a40 | 3440 | |
581d708e | 3441 | tso = e1000_tso(adapter, tx_ring, skb); |
1da177e4 LT |
3442 | if (tso < 0) { |
3443 | dev_kfree_skb_any(skb); | |
581d708e | 3444 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
3445 | return NETDEV_TX_OK; |
3446 | } | |
3447 | ||
fd803241 JK |
3448 | if (likely(tso)) { |
3449 | tx_ring->last_tx_tso = 1; | |
1da177e4 | 3450 | tx_flags |= E1000_TX_FLAGS_TSO; |
fd803241 | 3451 | } else if (likely(e1000_tx_csum(adapter, tx_ring, skb))) |
1da177e4 LT |
3452 | tx_flags |= E1000_TX_FLAGS_CSUM; |
3453 | ||
2d7edb92 | 3454 | /* Old method was to assume IPv4 packet by default if TSO was enabled. |
868d5309 | 3455 | * 82571 hardware supports TSO capabilities for IPv6 as well... |
2d7edb92 | 3456 | * no longer assume, we must. */ |
60828236 | 3457 | if (likely(skb->protocol == htons(ETH_P_IP))) |
2d7edb92 MC |
3458 | tx_flags |= E1000_TX_FLAGS_IPV4; |
3459 | ||
581d708e MC |
3460 | e1000_tx_queue(adapter, tx_ring, tx_flags, |
3461 | e1000_tx_map(adapter, tx_ring, skb, first, | |
3462 | max_per_txd, nr_frags, mss)); | |
1da177e4 LT |
3463 | |
3464 | netdev->trans_start = jiffies; | |
3465 | ||
3466 | /* Make sure there is space in the ring for the next send. */ | |
65c7973f | 3467 | e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2); |
1da177e4 | 3468 | |
581d708e | 3469 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
3470 | return NETDEV_TX_OK; |
3471 | } | |
3472 | ||
3473 | /** | |
3474 | * e1000_tx_timeout - Respond to a Tx Hang | |
3475 | * @netdev: network interface device structure | |
3476 | **/ | |
3477 | ||
3478 | static void | |
3479 | e1000_tx_timeout(struct net_device *netdev) | |
3480 | { | |
60490fe0 | 3481 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
3482 | |
3483 | /* Do the reset outside of interrupt context */ | |
87041639 JK |
3484 | adapter->tx_timeout_count++; |
3485 | schedule_work(&adapter->reset_task); | |
1da177e4 LT |
3486 | } |
3487 | ||
3488 | static void | |
65f27f38 | 3489 | e1000_reset_task(struct work_struct *work) |
1da177e4 | 3490 | { |
65f27f38 DH |
3491 | struct e1000_adapter *adapter = |
3492 | container_of(work, struct e1000_adapter, reset_task); | |
1da177e4 | 3493 | |
2db10a08 | 3494 | e1000_reinit_locked(adapter); |
1da177e4 LT |
3495 | } |
3496 | ||
3497 | /** | |
3498 | * e1000_get_stats - Get System Network Statistics | |
3499 | * @netdev: network interface device structure | |
3500 | * | |
3501 | * Returns the address of the device statistics structure. | |
3502 | * The statistics are actually updated from the timer callback. | |
3503 | **/ | |
3504 | ||
3505 | static struct net_device_stats * | |
3506 | e1000_get_stats(struct net_device *netdev) | |
3507 | { | |
60490fe0 | 3508 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3509 | |
6b7660cd | 3510 | /* only return the current stats */ |
1da177e4 LT |
3511 | return &adapter->net_stats; |
3512 | } | |
3513 | ||
3514 | /** | |
3515 | * e1000_change_mtu - Change the Maximum Transfer Unit | |
3516 | * @netdev: network interface device structure | |
3517 | * @new_mtu: new value for maximum frame size | |
3518 | * | |
3519 | * Returns 0 on success, negative on failure | |
3520 | **/ | |
3521 | ||
3522 | static int | |
3523 | e1000_change_mtu(struct net_device *netdev, int new_mtu) | |
3524 | { | |
60490fe0 | 3525 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3526 | int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
406874a7 | 3527 | u16 eeprom_data = 0; |
1da177e4 | 3528 | |
96838a40 JB |
3529 | if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || |
3530 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
3531 | DPRINTK(PROBE, ERR, "Invalid MTU setting\n"); | |
1da177e4 | 3532 | return -EINVAL; |
2d7edb92 | 3533 | } |
1da177e4 | 3534 | |
997f5cbd JK |
3535 | /* Adapter-specific max frame size limits. */ |
3536 | switch (adapter->hw.mac_type) { | |
9e2feace | 3537 | case e1000_undefined ... e1000_82542_rev2_1: |
cd94dd0b | 3538 | case e1000_ich8lan: |
997f5cbd JK |
3539 | if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) { |
3540 | DPRINTK(PROBE, ERR, "Jumbo Frames not supported.\n"); | |
2d7edb92 | 3541 | return -EINVAL; |
2d7edb92 | 3542 | } |
997f5cbd | 3543 | break; |
85b22eb6 | 3544 | case e1000_82573: |
249d71d6 BA |
3545 | /* Jumbo Frames not supported if: |
3546 | * - this is not an 82573L device | |
3547 | * - ASPM is enabled in any way (0x1A bits 3:2) */ | |
85b22eb6 JK |
3548 | e1000_read_eeprom(&adapter->hw, EEPROM_INIT_3GIO_3, 1, |
3549 | &eeprom_data); | |
249d71d6 BA |
3550 | if ((adapter->hw.device_id != E1000_DEV_ID_82573L) || |
3551 | (eeprom_data & EEPROM_WORD1A_ASPM_MASK)) { | |
85b22eb6 JK |
3552 | if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) { |
3553 | DPRINTK(PROBE, ERR, | |
3554 | "Jumbo Frames not supported.\n"); | |
3555 | return -EINVAL; | |
3556 | } | |
3557 | break; | |
3558 | } | |
249d71d6 BA |
3559 | /* ERT will be enabled later to enable wire speed receives */ |
3560 | ||
85b22eb6 | 3561 | /* fall through to get support */ |
997f5cbd JK |
3562 | case e1000_82571: |
3563 | case e1000_82572: | |
87041639 | 3564 | case e1000_80003es2lan: |
997f5cbd JK |
3565 | #define MAX_STD_JUMBO_FRAME_SIZE 9234 |
3566 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { | |
3567 | DPRINTK(PROBE, ERR, "MTU > 9216 not supported.\n"); | |
3568 | return -EINVAL; | |
3569 | } | |
3570 | break; | |
3571 | default: | |
3572 | /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */ | |
3573 | break; | |
1da177e4 LT |
3574 | } |
3575 | ||
87f5032e | 3576 | /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
9e2feace AK |
3577 | * means we reserve 2 more, this pushes us to allocate from the next |
3578 | * larger slab size | |
3579 | * i.e. RXBUFFER_2048 --> size-4096 slab */ | |
3580 | ||
3581 | if (max_frame <= E1000_RXBUFFER_256) | |
3582 | adapter->rx_buffer_len = E1000_RXBUFFER_256; | |
3583 | else if (max_frame <= E1000_RXBUFFER_512) | |
3584 | adapter->rx_buffer_len = E1000_RXBUFFER_512; | |
3585 | else if (max_frame <= E1000_RXBUFFER_1024) | |
3586 | adapter->rx_buffer_len = E1000_RXBUFFER_1024; | |
3587 | else if (max_frame <= E1000_RXBUFFER_2048) | |
3588 | adapter->rx_buffer_len = E1000_RXBUFFER_2048; | |
3589 | else if (max_frame <= E1000_RXBUFFER_4096) | |
3590 | adapter->rx_buffer_len = E1000_RXBUFFER_4096; | |
3591 | else if (max_frame <= E1000_RXBUFFER_8192) | |
3592 | adapter->rx_buffer_len = E1000_RXBUFFER_8192; | |
3593 | else if (max_frame <= E1000_RXBUFFER_16384) | |
3594 | adapter->rx_buffer_len = E1000_RXBUFFER_16384; | |
3595 | ||
3596 | /* adjust allocation if LPE protects us, and we aren't using SBP */ | |
9e2feace AK |
3597 | if (!adapter->hw.tbi_compatibility_on && |
3598 | ((max_frame == MAXIMUM_ETHERNET_FRAME_SIZE) || | |
3599 | (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE))) | |
3600 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; | |
997f5cbd | 3601 | |
2d7edb92 | 3602 | netdev->mtu = new_mtu; |
83cd8279 | 3603 | adapter->hw.max_frame_size = max_frame; |
2d7edb92 | 3604 | |
2db10a08 AK |
3605 | if (netif_running(netdev)) |
3606 | e1000_reinit_locked(adapter); | |
1da177e4 | 3607 | |
1da177e4 LT |
3608 | return 0; |
3609 | } | |
3610 | ||
3611 | /** | |
3612 | * e1000_update_stats - Update the board statistics counters | |
3613 | * @adapter: board private structure | |
3614 | **/ | |
3615 | ||
3616 | void | |
3617 | e1000_update_stats(struct e1000_adapter *adapter) | |
3618 | { | |
3619 | struct e1000_hw *hw = &adapter->hw; | |
282f33c9 | 3620 | struct pci_dev *pdev = adapter->pdev; |
1da177e4 | 3621 | unsigned long flags; |
406874a7 | 3622 | u16 phy_tmp; |
1da177e4 LT |
3623 | |
3624 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF | |
3625 | ||
282f33c9 LV |
3626 | /* |
3627 | * Prevent stats update while adapter is being reset, or if the pci | |
3628 | * connection is down. | |
3629 | */ | |
9026729b | 3630 | if (adapter->link_speed == 0) |
282f33c9 | 3631 | return; |
81b1955e | 3632 | if (pci_channel_offline(pdev)) |
9026729b AK |
3633 | return; |
3634 | ||
1da177e4 LT |
3635 | spin_lock_irqsave(&adapter->stats_lock, flags); |
3636 | ||
828d055f | 3637 | /* these counters are modified from e1000_tbi_adjust_stats, |
1da177e4 LT |
3638 | * called from the interrupt context, so they must only |
3639 | * be written while holding adapter->stats_lock | |
3640 | */ | |
3641 | ||
3642 | adapter->stats.crcerrs += E1000_READ_REG(hw, CRCERRS); | |
3643 | adapter->stats.gprc += E1000_READ_REG(hw, GPRC); | |
3644 | adapter->stats.gorcl += E1000_READ_REG(hw, GORCL); | |
3645 | adapter->stats.gorch += E1000_READ_REG(hw, GORCH); | |
3646 | adapter->stats.bprc += E1000_READ_REG(hw, BPRC); | |
3647 | adapter->stats.mprc += E1000_READ_REG(hw, MPRC); | |
3648 | adapter->stats.roc += E1000_READ_REG(hw, ROC); | |
cd94dd0b AK |
3649 | |
3650 | if (adapter->hw.mac_type != e1000_ich8lan) { | |
90fb5135 AK |
3651 | adapter->stats.prc64 += E1000_READ_REG(hw, PRC64); |
3652 | adapter->stats.prc127 += E1000_READ_REG(hw, PRC127); | |
3653 | adapter->stats.prc255 += E1000_READ_REG(hw, PRC255); | |
3654 | adapter->stats.prc511 += E1000_READ_REG(hw, PRC511); | |
3655 | adapter->stats.prc1023 += E1000_READ_REG(hw, PRC1023); | |
3656 | adapter->stats.prc1522 += E1000_READ_REG(hw, PRC1522); | |
cd94dd0b | 3657 | } |
1da177e4 LT |
3658 | |
3659 | adapter->stats.symerrs += E1000_READ_REG(hw, SYMERRS); | |
3660 | adapter->stats.mpc += E1000_READ_REG(hw, MPC); | |
3661 | adapter->stats.scc += E1000_READ_REG(hw, SCC); | |
3662 | adapter->stats.ecol += E1000_READ_REG(hw, ECOL); | |
3663 | adapter->stats.mcc += E1000_READ_REG(hw, MCC); | |
3664 | adapter->stats.latecol += E1000_READ_REG(hw, LATECOL); | |
3665 | adapter->stats.dc += E1000_READ_REG(hw, DC); | |
3666 | adapter->stats.sec += E1000_READ_REG(hw, SEC); | |
3667 | adapter->stats.rlec += E1000_READ_REG(hw, RLEC); | |
3668 | adapter->stats.xonrxc += E1000_READ_REG(hw, XONRXC); | |
3669 | adapter->stats.xontxc += E1000_READ_REG(hw, XONTXC); | |
3670 | adapter->stats.xoffrxc += E1000_READ_REG(hw, XOFFRXC); | |
3671 | adapter->stats.xofftxc += E1000_READ_REG(hw, XOFFTXC); | |
3672 | adapter->stats.fcruc += E1000_READ_REG(hw, FCRUC); | |
3673 | adapter->stats.gptc += E1000_READ_REG(hw, GPTC); | |
3674 | adapter->stats.gotcl += E1000_READ_REG(hw, GOTCL); | |
3675 | adapter->stats.gotch += E1000_READ_REG(hw, GOTCH); | |
3676 | adapter->stats.rnbc += E1000_READ_REG(hw, RNBC); | |
3677 | adapter->stats.ruc += E1000_READ_REG(hw, RUC); | |
3678 | adapter->stats.rfc += E1000_READ_REG(hw, RFC); | |
3679 | adapter->stats.rjc += E1000_READ_REG(hw, RJC); | |
3680 | adapter->stats.torl += E1000_READ_REG(hw, TORL); | |
3681 | adapter->stats.torh += E1000_READ_REG(hw, TORH); | |
3682 | adapter->stats.totl += E1000_READ_REG(hw, TOTL); | |
3683 | adapter->stats.toth += E1000_READ_REG(hw, TOTH); | |
3684 | adapter->stats.tpr += E1000_READ_REG(hw, TPR); | |
cd94dd0b AK |
3685 | |
3686 | if (adapter->hw.mac_type != e1000_ich8lan) { | |
90fb5135 AK |
3687 | adapter->stats.ptc64 += E1000_READ_REG(hw, PTC64); |
3688 | adapter->stats.ptc127 += E1000_READ_REG(hw, PTC127); | |
3689 | adapter->stats.ptc255 += E1000_READ_REG(hw, PTC255); | |
3690 | adapter->stats.ptc511 += E1000_READ_REG(hw, PTC511); | |
3691 | adapter->stats.ptc1023 += E1000_READ_REG(hw, PTC1023); | |
3692 | adapter->stats.ptc1522 += E1000_READ_REG(hw, PTC1522); | |
cd94dd0b AK |
3693 | } |
3694 | ||
1da177e4 LT |
3695 | adapter->stats.mptc += E1000_READ_REG(hw, MPTC); |
3696 | adapter->stats.bptc += E1000_READ_REG(hw, BPTC); | |
3697 | ||
3698 | /* used for adaptive IFS */ | |
3699 | ||
3700 | hw->tx_packet_delta = E1000_READ_REG(hw, TPT); | |
3701 | adapter->stats.tpt += hw->tx_packet_delta; | |
3702 | hw->collision_delta = E1000_READ_REG(hw, COLC); | |
3703 | adapter->stats.colc += hw->collision_delta; | |
3704 | ||
96838a40 | 3705 | if (hw->mac_type >= e1000_82543) { |
1da177e4 LT |
3706 | adapter->stats.algnerrc += E1000_READ_REG(hw, ALGNERRC); |
3707 | adapter->stats.rxerrc += E1000_READ_REG(hw, RXERRC); | |
3708 | adapter->stats.tncrs += E1000_READ_REG(hw, TNCRS); | |
3709 | adapter->stats.cexterr += E1000_READ_REG(hw, CEXTERR); | |
3710 | adapter->stats.tsctc += E1000_READ_REG(hw, TSCTC); | |
3711 | adapter->stats.tsctfc += E1000_READ_REG(hw, TSCTFC); | |
3712 | } | |
96838a40 | 3713 | if (hw->mac_type > e1000_82547_rev_2) { |
2d7edb92 MC |
3714 | adapter->stats.iac += E1000_READ_REG(hw, IAC); |
3715 | adapter->stats.icrxoc += E1000_READ_REG(hw, ICRXOC); | |
cd94dd0b AK |
3716 | |
3717 | if (adapter->hw.mac_type != e1000_ich8lan) { | |
90fb5135 AK |
3718 | adapter->stats.icrxptc += E1000_READ_REG(hw, ICRXPTC); |
3719 | adapter->stats.icrxatc += E1000_READ_REG(hw, ICRXATC); | |
3720 | adapter->stats.ictxptc += E1000_READ_REG(hw, ICTXPTC); | |
3721 | adapter->stats.ictxatc += E1000_READ_REG(hw, ICTXATC); | |
3722 | adapter->stats.ictxqec += E1000_READ_REG(hw, ICTXQEC); | |
3723 | adapter->stats.ictxqmtc += E1000_READ_REG(hw, ICTXQMTC); | |
3724 | adapter->stats.icrxdmtc += E1000_READ_REG(hw, ICRXDMTC); | |
cd94dd0b | 3725 | } |
2d7edb92 | 3726 | } |
1da177e4 LT |
3727 | |
3728 | /* Fill out the OS statistics structure */ | |
1da177e4 LT |
3729 | adapter->net_stats.multicast = adapter->stats.mprc; |
3730 | adapter->net_stats.collisions = adapter->stats.colc; | |
3731 | ||
3732 | /* Rx Errors */ | |
3733 | ||
87041639 JK |
3734 | /* RLEC on some newer hardware can be incorrect so build |
3735 | * our own version based on RUC and ROC */ | |
1da177e4 LT |
3736 | adapter->net_stats.rx_errors = adapter->stats.rxerrc + |
3737 | adapter->stats.crcerrs + adapter->stats.algnerrc + | |
87041639 JK |
3738 | adapter->stats.ruc + adapter->stats.roc + |
3739 | adapter->stats.cexterr; | |
49559854 MW |
3740 | adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc; |
3741 | adapter->net_stats.rx_length_errors = adapter->stats.rlerrc; | |
1da177e4 LT |
3742 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; |
3743 | adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; | |
1da177e4 LT |
3744 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; |
3745 | ||
3746 | /* Tx Errors */ | |
49559854 MW |
3747 | adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol; |
3748 | adapter->net_stats.tx_errors = adapter->stats.txerrc; | |
1da177e4 LT |
3749 | adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; |
3750 | adapter->net_stats.tx_window_errors = adapter->stats.latecol; | |
3751 | adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; | |
167fb284 JG |
3752 | if (adapter->hw.bad_tx_carr_stats_fd && |
3753 | adapter->link_duplex == FULL_DUPLEX) { | |
3754 | adapter->net_stats.tx_carrier_errors = 0; | |
3755 | adapter->stats.tncrs = 0; | |
3756 | } | |
1da177e4 LT |
3757 | |
3758 | /* Tx Dropped needs to be maintained elsewhere */ | |
3759 | ||
3760 | /* Phy Stats */ | |
96838a40 JB |
3761 | if (hw->media_type == e1000_media_type_copper) { |
3762 | if ((adapter->link_speed == SPEED_1000) && | |
1da177e4 LT |
3763 | (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
3764 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; | |
3765 | adapter->phy_stats.idle_errors += phy_tmp; | |
3766 | } | |
3767 | ||
96838a40 | 3768 | if ((hw->mac_type <= e1000_82546) && |
1da177e4 LT |
3769 | (hw->phy_type == e1000_phy_m88) && |
3770 | !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) | |
3771 | adapter->phy_stats.receive_errors += phy_tmp; | |
3772 | } | |
3773 | ||
15e376b4 JG |
3774 | /* Management Stats */ |
3775 | if (adapter->hw.has_smbus) { | |
3776 | adapter->stats.mgptc += E1000_READ_REG(hw, MGTPTC); | |
3777 | adapter->stats.mgprc += E1000_READ_REG(hw, MGTPRC); | |
3778 | adapter->stats.mgpdc += E1000_READ_REG(hw, MGTPDC); | |
3779 | } | |
3780 | ||
1da177e4 LT |
3781 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
3782 | } | |
9ac98284 JB |
3783 | |
3784 | /** | |
3785 | * e1000_intr_msi - Interrupt Handler | |
3786 | * @irq: interrupt number | |
3787 | * @data: pointer to a network interface device structure | |
3788 | **/ | |
3789 | ||
b5fc8f0c JB |
3790 | static irqreturn_t |
3791 | e1000_intr_msi(int irq, void *data) | |
9ac98284 JB |
3792 | { |
3793 | struct net_device *netdev = data; | |
3794 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3795 | struct e1000_hw *hw = &adapter->hw; | |
3796 | #ifndef CONFIG_E1000_NAPI | |
3797 | int i; | |
3798 | #endif | |
406874a7 | 3799 | u32 icr = E1000_READ_REG(hw, ICR); |
9ac98284 | 3800 | |
9150b76a JB |
3801 | /* in NAPI mode read ICR disables interrupts using IAM */ |
3802 | ||
b5fc8f0c JB |
3803 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
3804 | hw->get_link_status = 1; | |
3805 | /* 80003ES2LAN workaround-- For packet buffer work-around on | |
3806 | * link down event; disable receives here in the ISR and reset | |
3807 | * adapter in watchdog */ | |
3808 | if (netif_carrier_ok(netdev) && | |
3809 | (adapter->hw.mac_type == e1000_80003es2lan)) { | |
3810 | /* disable receives */ | |
406874a7 | 3811 | u32 rctl = E1000_READ_REG(hw, RCTL); |
b5fc8f0c | 3812 | E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); |
9ac98284 | 3813 | } |
b5fc8f0c JB |
3814 | /* guard against interrupt when we're going down */ |
3815 | if (!test_bit(__E1000_DOWN, &adapter->flags)) | |
3816 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
9ac98284 JB |
3817 | } |
3818 | ||
3819 | #ifdef CONFIG_E1000_NAPI | |
bea3348e | 3820 | if (likely(netif_rx_schedule_prep(netdev, &adapter->napi))) { |
835bb129 JB |
3821 | adapter->total_tx_bytes = 0; |
3822 | adapter->total_tx_packets = 0; | |
3823 | adapter->total_rx_bytes = 0; | |
3824 | adapter->total_rx_packets = 0; | |
bea3348e | 3825 | __netif_rx_schedule(netdev, &adapter->napi); |
835bb129 | 3826 | } else |
9ac98284 JB |
3827 | e1000_irq_enable(adapter); |
3828 | #else | |
835bb129 JB |
3829 | adapter->total_tx_bytes = 0; |
3830 | adapter->total_rx_bytes = 0; | |
3831 | adapter->total_tx_packets = 0; | |
3832 | adapter->total_rx_packets = 0; | |
3833 | ||
9ac98284 JB |
3834 | for (i = 0; i < E1000_MAX_INTR; i++) |
3835 | if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) & | |
46fcc86d | 3836 | !e1000_clean_tx_irq(adapter, adapter->tx_ring))) |
9ac98284 | 3837 | break; |
835bb129 JB |
3838 | |
3839 | if (likely(adapter->itr_setting & 3)) | |
3840 | e1000_set_itr(adapter); | |
9ac98284 JB |
3841 | #endif |
3842 | ||
3843 | return IRQ_HANDLED; | |
3844 | } | |
1da177e4 LT |
3845 | |
3846 | /** | |
3847 | * e1000_intr - Interrupt Handler | |
3848 | * @irq: interrupt number | |
3849 | * @data: pointer to a network interface device structure | |
1da177e4 LT |
3850 | **/ |
3851 | ||
3852 | static irqreturn_t | |
7d12e780 | 3853 | e1000_intr(int irq, void *data) |
1da177e4 LT |
3854 | { |
3855 | struct net_device *netdev = data; | |
60490fe0 | 3856 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3857 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 3858 | u32 rctl, icr = E1000_READ_REG(hw, ICR); |
1e613fd9 | 3859 | #ifndef CONFIG_E1000_NAPI |
581d708e | 3860 | int i; |
835bb129 JB |
3861 | #endif |
3862 | if (unlikely(!icr)) | |
3863 | return IRQ_NONE; /* Not our interrupt */ | |
3864 | ||
3865 | #ifdef CONFIG_E1000_NAPI | |
3866 | /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is | |
3867 | * not set, then the adapter didn't send an interrupt */ | |
3868 | if (unlikely(hw->mac_type >= e1000_82571 && | |
3869 | !(icr & E1000_ICR_INT_ASSERTED))) | |
3870 | return IRQ_NONE; | |
3871 | ||
9150b76a JB |
3872 | /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No |
3873 | * need for the IMC write */ | |
be2b28ed | 3874 | #endif |
1da177e4 | 3875 | |
96838a40 | 3876 | if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { |
1da177e4 | 3877 | hw->get_link_status = 1; |
87041639 JK |
3878 | /* 80003ES2LAN workaround-- |
3879 | * For packet buffer work-around on link down event; | |
3880 | * disable receives here in the ISR and | |
3881 | * reset adapter in watchdog | |
3882 | */ | |
3883 | if (netif_carrier_ok(netdev) && | |
3884 | (adapter->hw.mac_type == e1000_80003es2lan)) { | |
3885 | /* disable receives */ | |
3886 | rctl = E1000_READ_REG(hw, RCTL); | |
3887 | E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); | |
3888 | } | |
1314bbf3 AK |
3889 | /* guard against interrupt when we're going down */ |
3890 | if (!test_bit(__E1000_DOWN, &adapter->flags)) | |
3891 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1da177e4 LT |
3892 | } |
3893 | ||
3894 | #ifdef CONFIG_E1000_NAPI | |
1e613fd9 | 3895 | if (unlikely(hw->mac_type < e1000_82571)) { |
835bb129 | 3896 | /* disable interrupts, without the synchronize_irq bit */ |
1e613fd9 JK |
3897 | E1000_WRITE_REG(hw, IMC, ~0); |
3898 | E1000_WRITE_FLUSH(hw); | |
3899 | } | |
bea3348e | 3900 | if (likely(netif_rx_schedule_prep(netdev, &adapter->napi))) { |
835bb129 JB |
3901 | adapter->total_tx_bytes = 0; |
3902 | adapter->total_tx_packets = 0; | |
3903 | adapter->total_rx_bytes = 0; | |
3904 | adapter->total_rx_packets = 0; | |
bea3348e | 3905 | __netif_rx_schedule(netdev, &adapter->napi); |
835bb129 | 3906 | } else |
90fb5135 AK |
3907 | /* this really should not happen! if it does it is basically a |
3908 | * bug, but not a hard error, so enable ints and continue */ | |
581d708e | 3909 | e1000_irq_enable(adapter); |
c1605eb3 | 3910 | #else |
1da177e4 | 3911 | /* Writing IMC and IMS is needed for 82547. |
96838a40 JB |
3912 | * Due to Hub Link bus being occupied, an interrupt |
3913 | * de-assertion message is not able to be sent. | |
3914 | * When an interrupt assertion message is generated later, | |
3915 | * two messages are re-ordered and sent out. | |
3916 | * That causes APIC to think 82547 is in de-assertion | |
3917 | * state, while 82547 is in assertion state, resulting | |
3918 | * in dead lock. Writing IMC forces 82547 into | |
3919 | * de-assertion state. | |
3920 | */ | |
9150b76a | 3921 | if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) |
2648345f | 3922 | E1000_WRITE_REG(hw, IMC, ~0); |
1da177e4 | 3923 | |
835bb129 JB |
3924 | adapter->total_tx_bytes = 0; |
3925 | adapter->total_rx_bytes = 0; | |
3926 | adapter->total_tx_packets = 0; | |
3927 | adapter->total_rx_packets = 0; | |
3928 | ||
96838a40 JB |
3929 | for (i = 0; i < E1000_MAX_INTR; i++) |
3930 | if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) & | |
46fcc86d | 3931 | !e1000_clean_tx_irq(adapter, adapter->tx_ring))) |
1da177e4 LT |
3932 | break; |
3933 | ||
835bb129 JB |
3934 | if (likely(adapter->itr_setting & 3)) |
3935 | e1000_set_itr(adapter); | |
3936 | ||
96838a40 | 3937 | if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) |
1da177e4 | 3938 | e1000_irq_enable(adapter); |
581d708e | 3939 | |
c1605eb3 | 3940 | #endif |
1da177e4 LT |
3941 | return IRQ_HANDLED; |
3942 | } | |
3943 | ||
3944 | #ifdef CONFIG_E1000_NAPI | |
3945 | /** | |
3946 | * e1000_clean - NAPI Rx polling callback | |
3947 | * @adapter: board private structure | |
3948 | **/ | |
3949 | ||
3950 | static int | |
bea3348e | 3951 | e1000_clean(struct napi_struct *napi, int budget) |
1da177e4 | 3952 | { |
bea3348e SH |
3953 | struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); |
3954 | struct net_device *poll_dev = adapter->netdev; | |
d2c7ddd6 | 3955 | int tx_cleaned = 0, work_done = 0; |
581d708e MC |
3956 | |
3957 | /* Must NOT use netdev_priv macro here. */ | |
3958 | adapter = poll_dev->priv; | |
3959 | ||
d3d9e484 AK |
3960 | /* e1000_clean is called per-cpu. This lock protects |
3961 | * tx_ring[0] from being cleaned by multiple cpus | |
3962 | * simultaneously. A failure obtaining the lock means | |
3963 | * tx_ring[0] is currently being cleaned anyway. */ | |
3964 | if (spin_trylock(&adapter->tx_queue_lock)) { | |
d2c7ddd6 DM |
3965 | tx_cleaned = e1000_clean_tx_irq(adapter, |
3966 | &adapter->tx_ring[0]); | |
d3d9e484 | 3967 | spin_unlock(&adapter->tx_queue_lock); |
581d708e MC |
3968 | } |
3969 | ||
d3d9e484 | 3970 | adapter->clean_rx(adapter, &adapter->rx_ring[0], |
bea3348e | 3971 | &work_done, budget); |
96838a40 | 3972 | |
d2c7ddd6 DM |
3973 | if (tx_cleaned) |
3974 | work_done = budget; | |
3975 | ||
53e52c72 DM |
3976 | /* If budget not fully consumed, exit the polling mode */ |
3977 | if (work_done < budget) { | |
835bb129 JB |
3978 | if (likely(adapter->itr_setting & 3)) |
3979 | e1000_set_itr(adapter); | |
bea3348e | 3980 | netif_rx_complete(poll_dev, napi); |
1da177e4 | 3981 | e1000_irq_enable(adapter); |
1da177e4 LT |
3982 | } |
3983 | ||
bea3348e | 3984 | return work_done; |
1da177e4 LT |
3985 | } |
3986 | ||
3987 | #endif | |
3988 | /** | |
3989 | * e1000_clean_tx_irq - Reclaim resources after transmit completes | |
3990 | * @adapter: board private structure | |
3991 | **/ | |
3992 | ||
c3033b01 | 3993 | static bool |
581d708e MC |
3994 | e1000_clean_tx_irq(struct e1000_adapter *adapter, |
3995 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 3996 | { |
1da177e4 LT |
3997 | struct net_device *netdev = adapter->netdev; |
3998 | struct e1000_tx_desc *tx_desc, *eop_desc; | |
3999 | struct e1000_buffer *buffer_info; | |
4000 | unsigned int i, eop; | |
2a1af5d7 JK |
4001 | #ifdef CONFIG_E1000_NAPI |
4002 | unsigned int count = 0; | |
4003 | #endif | |
c3033b01 | 4004 | bool cleaned = false; |
835bb129 | 4005 | unsigned int total_tx_bytes=0, total_tx_packets=0; |
1da177e4 LT |
4006 | |
4007 | i = tx_ring->next_to_clean; | |
4008 | eop = tx_ring->buffer_info[i].next_to_watch; | |
4009 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
4010 | ||
581d708e | 4011 | while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) { |
c3033b01 | 4012 | for (cleaned = false; !cleaned; ) { |
1da177e4 LT |
4013 | tx_desc = E1000_TX_DESC(*tx_ring, i); |
4014 | buffer_info = &tx_ring->buffer_info[i]; | |
4015 | cleaned = (i == eop); | |
4016 | ||
835bb129 | 4017 | if (cleaned) { |
2b65326e | 4018 | struct sk_buff *skb = buffer_info->skb; |
7753b171 JB |
4019 | unsigned int segs, bytecount; |
4020 | segs = skb_shinfo(skb)->gso_segs ?: 1; | |
4021 | /* multiply data chunks by size of headers */ | |
4022 | bytecount = ((segs - 1) * skb_headlen(skb)) + | |
4023 | skb->len; | |
2b65326e | 4024 | total_tx_packets += segs; |
7753b171 | 4025 | total_tx_bytes += bytecount; |
835bb129 | 4026 | } |
fd803241 | 4027 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
a9ebadd6 | 4028 | tx_desc->upper.data = 0; |
1da177e4 | 4029 | |
96838a40 | 4030 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 | 4031 | } |
581d708e | 4032 | |
1da177e4 LT |
4033 | eop = tx_ring->buffer_info[i].next_to_watch; |
4034 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
2a1af5d7 JK |
4035 | #ifdef CONFIG_E1000_NAPI |
4036 | #define E1000_TX_WEIGHT 64 | |
4037 | /* weight of a sort for tx, to avoid endless transmit cleanup */ | |
46fcc86d | 4038 | if (count++ == E1000_TX_WEIGHT) break; |
2a1af5d7 | 4039 | #endif |
1da177e4 LT |
4040 | } |
4041 | ||
4042 | tx_ring->next_to_clean = i; | |
4043 | ||
77b2aad5 | 4044 | #define TX_WAKE_THRESHOLD 32 |
65c7973f JB |
4045 | if (unlikely(cleaned && netif_carrier_ok(netdev) && |
4046 | E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) { | |
4047 | /* Make sure that anybody stopping the queue after this | |
4048 | * sees the new next_to_clean. | |
4049 | */ | |
4050 | smp_mb(); | |
fcfb1224 | 4051 | if (netif_queue_stopped(netdev)) { |
77b2aad5 | 4052 | netif_wake_queue(netdev); |
fcfb1224 JB |
4053 | ++adapter->restart_queue; |
4054 | } | |
77b2aad5 | 4055 | } |
2648345f | 4056 | |
581d708e | 4057 | if (adapter->detect_tx_hung) { |
2648345f | 4058 | /* Detect a transmit hang in hardware, this serializes the |
1da177e4 | 4059 | * check with the clearing of time_stamp and movement of i */ |
c3033b01 | 4060 | adapter->detect_tx_hung = false; |
392137fa JK |
4061 | if (tx_ring->buffer_info[eop].dma && |
4062 | time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + | |
7e6c9861 | 4063 | (adapter->tx_timeout_factor * HZ)) |
70b8f1e1 | 4064 | && !(E1000_READ_REG(&adapter->hw, STATUS) & |
392137fa | 4065 | E1000_STATUS_TXOFF)) { |
70b8f1e1 MC |
4066 | |
4067 | /* detected Tx unit hang */ | |
c6963ef5 | 4068 | DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" |
7bfa4816 | 4069 | " Tx Queue <%lu>\n" |
70b8f1e1 MC |
4070 | " TDH <%x>\n" |
4071 | " TDT <%x>\n" | |
4072 | " next_to_use <%x>\n" | |
4073 | " next_to_clean <%x>\n" | |
4074 | "buffer_info[next_to_clean]\n" | |
70b8f1e1 MC |
4075 | " time_stamp <%lx>\n" |
4076 | " next_to_watch <%x>\n" | |
4077 | " jiffies <%lx>\n" | |
4078 | " next_to_watch.status <%x>\n", | |
7bfa4816 JK |
4079 | (unsigned long)((tx_ring - adapter->tx_ring) / |
4080 | sizeof(struct e1000_tx_ring)), | |
581d708e MC |
4081 | readl(adapter->hw.hw_addr + tx_ring->tdh), |
4082 | readl(adapter->hw.hw_addr + tx_ring->tdt), | |
70b8f1e1 | 4083 | tx_ring->next_to_use, |
392137fa JK |
4084 | tx_ring->next_to_clean, |
4085 | tx_ring->buffer_info[eop].time_stamp, | |
70b8f1e1 MC |
4086 | eop, |
4087 | jiffies, | |
4088 | eop_desc->upper.fields.status); | |
1da177e4 | 4089 | netif_stop_queue(netdev); |
70b8f1e1 | 4090 | } |
1da177e4 | 4091 | } |
835bb129 JB |
4092 | adapter->total_tx_bytes += total_tx_bytes; |
4093 | adapter->total_tx_packets += total_tx_packets; | |
ef90e4ec AK |
4094 | adapter->net_stats.tx_bytes += total_tx_bytes; |
4095 | adapter->net_stats.tx_packets += total_tx_packets; | |
1da177e4 LT |
4096 | return cleaned; |
4097 | } | |
4098 | ||
4099 | /** | |
4100 | * e1000_rx_checksum - Receive Checksum Offload for 82543 | |
2d7edb92 MC |
4101 | * @adapter: board private structure |
4102 | * @status_err: receive descriptor status and error fields | |
4103 | * @csum: receive descriptor csum field | |
4104 | * @sk_buff: socket buffer with received data | |
1da177e4 LT |
4105 | **/ |
4106 | ||
e619d523 | 4107 | static void |
1da177e4 | 4108 | e1000_rx_checksum(struct e1000_adapter *adapter, |
406874a7 | 4109 | u32 status_err, u32 csum, |
2d7edb92 | 4110 | struct sk_buff *skb) |
1da177e4 | 4111 | { |
406874a7 JP |
4112 | u16 status = (u16)status_err; |
4113 | u8 errors = (u8)(status_err >> 24); | |
2d7edb92 MC |
4114 | skb->ip_summed = CHECKSUM_NONE; |
4115 | ||
1da177e4 | 4116 | /* 82543 or newer only */ |
96838a40 | 4117 | if (unlikely(adapter->hw.mac_type < e1000_82543)) return; |
1da177e4 | 4118 | /* Ignore Checksum bit is set */ |
96838a40 | 4119 | if (unlikely(status & E1000_RXD_STAT_IXSM)) return; |
2d7edb92 | 4120 | /* TCP/UDP checksum error bit is set */ |
96838a40 | 4121 | if (unlikely(errors & E1000_RXD_ERR_TCPE)) { |
1da177e4 | 4122 | /* let the stack verify checksum errors */ |
1da177e4 | 4123 | adapter->hw_csum_err++; |
2d7edb92 MC |
4124 | return; |
4125 | } | |
4126 | /* TCP/UDP Checksum has not been calculated */ | |
96838a40 JB |
4127 | if (adapter->hw.mac_type <= e1000_82547_rev_2) { |
4128 | if (!(status & E1000_RXD_STAT_TCPCS)) | |
2d7edb92 | 4129 | return; |
1da177e4 | 4130 | } else { |
96838a40 | 4131 | if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) |
2d7edb92 MC |
4132 | return; |
4133 | } | |
4134 | /* It must be a TCP or UDP packet with a valid checksum */ | |
4135 | if (likely(status & E1000_RXD_STAT_TCPCS)) { | |
1da177e4 LT |
4136 | /* TCP checksum is good */ |
4137 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
2d7edb92 MC |
4138 | } else if (adapter->hw.mac_type > e1000_82547_rev_2) { |
4139 | /* IP fragment with UDP payload */ | |
4140 | /* Hardware complements the payload checksum, so we undo it | |
4141 | * and then put the value in host order for further stack use. | |
4142 | */ | |
3e18826c AV |
4143 | __sum16 sum = (__force __sum16)htons(csum); |
4144 | skb->csum = csum_unfold(~sum); | |
84fa7933 | 4145 | skb->ip_summed = CHECKSUM_COMPLETE; |
1da177e4 | 4146 | } |
2d7edb92 | 4147 | adapter->hw_csum_good++; |
1da177e4 LT |
4148 | } |
4149 | ||
4150 | /** | |
2d7edb92 | 4151 | * e1000_clean_rx_irq - Send received data up the network stack; legacy |
1da177e4 LT |
4152 | * @adapter: board private structure |
4153 | **/ | |
4154 | ||
c3033b01 | 4155 | static bool |
1da177e4 | 4156 | #ifdef CONFIG_E1000_NAPI |
581d708e MC |
4157 | e1000_clean_rx_irq(struct e1000_adapter *adapter, |
4158 | struct e1000_rx_ring *rx_ring, | |
4159 | int *work_done, int work_to_do) | |
1da177e4 | 4160 | #else |
581d708e MC |
4161 | e1000_clean_rx_irq(struct e1000_adapter *adapter, |
4162 | struct e1000_rx_ring *rx_ring) | |
1da177e4 LT |
4163 | #endif |
4164 | { | |
1da177e4 LT |
4165 | struct net_device *netdev = adapter->netdev; |
4166 | struct pci_dev *pdev = adapter->pdev; | |
86c3d59f JB |
4167 | struct e1000_rx_desc *rx_desc, *next_rxd; |
4168 | struct e1000_buffer *buffer_info, *next_buffer; | |
1da177e4 | 4169 | unsigned long flags; |
406874a7 JP |
4170 | u32 length; |
4171 | u8 last_byte; | |
1da177e4 | 4172 | unsigned int i; |
72d64a43 | 4173 | int cleaned_count = 0; |
c3033b01 | 4174 | bool cleaned = false; |
835bb129 | 4175 | unsigned int total_rx_bytes=0, total_rx_packets=0; |
1da177e4 LT |
4176 | |
4177 | i = rx_ring->next_to_clean; | |
4178 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
b92ff8ee | 4179 | buffer_info = &rx_ring->buffer_info[i]; |
1da177e4 | 4180 | |
b92ff8ee | 4181 | while (rx_desc->status & E1000_RXD_STAT_DD) { |
24f476ee | 4182 | struct sk_buff *skb; |
a292ca6e | 4183 | u8 status; |
90fb5135 | 4184 | |
1da177e4 | 4185 | #ifdef CONFIG_E1000_NAPI |
96838a40 | 4186 | if (*work_done >= work_to_do) |
1da177e4 LT |
4187 | break; |
4188 | (*work_done)++; | |
4189 | #endif | |
a292ca6e | 4190 | status = rx_desc->status; |
b92ff8ee | 4191 | skb = buffer_info->skb; |
86c3d59f JB |
4192 | buffer_info->skb = NULL; |
4193 | ||
30320be8 JK |
4194 | prefetch(skb->data - NET_IP_ALIGN); |
4195 | ||
86c3d59f JB |
4196 | if (++i == rx_ring->count) i = 0; |
4197 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
30320be8 JK |
4198 | prefetch(next_rxd); |
4199 | ||
86c3d59f | 4200 | next_buffer = &rx_ring->buffer_info[i]; |
86c3d59f | 4201 | |
c3033b01 | 4202 | cleaned = true; |
72d64a43 | 4203 | cleaned_count++; |
a292ca6e JK |
4204 | pci_unmap_single(pdev, |
4205 | buffer_info->dma, | |
4206 | buffer_info->length, | |
1da177e4 LT |
4207 | PCI_DMA_FROMDEVICE); |
4208 | ||
1da177e4 LT |
4209 | length = le16_to_cpu(rx_desc->length); |
4210 | ||
a1415ee6 JK |
4211 | if (unlikely(!(status & E1000_RXD_STAT_EOP))) { |
4212 | /* All receives must fit into a single buffer */ | |
4213 | E1000_DBG("%s: Receive packet consumed multiple" | |
4214 | " buffers\n", netdev->name); | |
864c4e45 | 4215 | /* recycle */ |
8fc897b0 | 4216 | buffer_info->skb = skb; |
1da177e4 LT |
4217 | goto next_desc; |
4218 | } | |
4219 | ||
96838a40 | 4220 | if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { |
1da177e4 | 4221 | last_byte = *(skb->data + length - 1); |
b92ff8ee | 4222 | if (TBI_ACCEPT(&adapter->hw, status, |
1da177e4 LT |
4223 | rx_desc->errors, length, last_byte)) { |
4224 | spin_lock_irqsave(&adapter->stats_lock, flags); | |
a292ca6e JK |
4225 | e1000_tbi_adjust_stats(&adapter->hw, |
4226 | &adapter->stats, | |
1da177e4 LT |
4227 | length, skb->data); |
4228 | spin_unlock_irqrestore(&adapter->stats_lock, | |
4229 | flags); | |
4230 | length--; | |
4231 | } else { | |
9e2feace AK |
4232 | /* recycle */ |
4233 | buffer_info->skb = skb; | |
1da177e4 LT |
4234 | goto next_desc; |
4235 | } | |
1cb5821f | 4236 | } |
1da177e4 | 4237 | |
d2a1e213 JB |
4238 | /* adjust length to remove Ethernet CRC, this must be |
4239 | * done after the TBI_ACCEPT workaround above */ | |
4240 | length -= 4; | |
4241 | ||
835bb129 JB |
4242 | /* probably a little skewed due to removing CRC */ |
4243 | total_rx_bytes += length; | |
4244 | total_rx_packets++; | |
4245 | ||
a292ca6e JK |
4246 | /* code added for copybreak, this should improve |
4247 | * performance for small packets with large amounts | |
4248 | * of reassembly being done in the stack */ | |
1f753861 | 4249 | if (length < copybreak) { |
a292ca6e | 4250 | struct sk_buff *new_skb = |
87f5032e | 4251 | netdev_alloc_skb(netdev, length + NET_IP_ALIGN); |
a292ca6e JK |
4252 | if (new_skb) { |
4253 | skb_reserve(new_skb, NET_IP_ALIGN); | |
27d7ff46 ACM |
4254 | skb_copy_to_linear_data_offset(new_skb, |
4255 | -NET_IP_ALIGN, | |
4256 | (skb->data - | |
4257 | NET_IP_ALIGN), | |
4258 | (length + | |
4259 | NET_IP_ALIGN)); | |
a292ca6e JK |
4260 | /* save the skb in buffer_info as good */ |
4261 | buffer_info->skb = skb; | |
4262 | skb = new_skb; | |
a292ca6e | 4263 | } |
996695de AK |
4264 | /* else just continue with the old one */ |
4265 | } | |
a292ca6e | 4266 | /* end copybreak code */ |
996695de | 4267 | skb_put(skb, length); |
1da177e4 LT |
4268 | |
4269 | /* Receive Checksum Offload */ | |
a292ca6e | 4270 | e1000_rx_checksum(adapter, |
406874a7 JP |
4271 | (u32)(status) | |
4272 | ((u32)(rx_desc->errors) << 24), | |
c3d7a3a4 | 4273 | le16_to_cpu(rx_desc->csum), skb); |
96838a40 | 4274 | |
1da177e4 LT |
4275 | skb->protocol = eth_type_trans(skb, netdev); |
4276 | #ifdef CONFIG_E1000_NAPI | |
96838a40 | 4277 | if (unlikely(adapter->vlgrp && |
a292ca6e | 4278 | (status & E1000_RXD_STAT_VP))) { |
1da177e4 | 4279 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
38b22195 | 4280 | le16_to_cpu(rx_desc->special)); |
1da177e4 LT |
4281 | } else { |
4282 | netif_receive_skb(skb); | |
4283 | } | |
4284 | #else /* CONFIG_E1000_NAPI */ | |
96838a40 | 4285 | if (unlikely(adapter->vlgrp && |
b92ff8ee | 4286 | (status & E1000_RXD_STAT_VP))) { |
1da177e4 | 4287 | vlan_hwaccel_rx(skb, adapter->vlgrp, |
38b22195 | 4288 | le16_to_cpu(rx_desc->special)); |
1da177e4 LT |
4289 | } else { |
4290 | netif_rx(skb); | |
4291 | } | |
4292 | #endif /* CONFIG_E1000_NAPI */ | |
4293 | netdev->last_rx = jiffies; | |
4294 | ||
4295 | next_desc: | |
4296 | rx_desc->status = 0; | |
1da177e4 | 4297 | |
72d64a43 JK |
4298 | /* return some buffers to hardware, one at a time is too slow */ |
4299 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
4300 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
4301 | cleaned_count = 0; | |
4302 | } | |
4303 | ||
30320be8 | 4304 | /* use prefetched values */ |
86c3d59f JB |
4305 | rx_desc = next_rxd; |
4306 | buffer_info = next_buffer; | |
1da177e4 | 4307 | } |
1da177e4 | 4308 | rx_ring->next_to_clean = i; |
72d64a43 JK |
4309 | |
4310 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
4311 | if (cleaned_count) | |
4312 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
2d7edb92 | 4313 | |
835bb129 JB |
4314 | adapter->total_rx_packets += total_rx_packets; |
4315 | adapter->total_rx_bytes += total_rx_bytes; | |
ef90e4ec AK |
4316 | adapter->net_stats.rx_bytes += total_rx_bytes; |
4317 | adapter->net_stats.rx_packets += total_rx_packets; | |
2d7edb92 MC |
4318 | return cleaned; |
4319 | } | |
4320 | ||
4321 | /** | |
4322 | * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split | |
4323 | * @adapter: board private structure | |
4324 | **/ | |
4325 | ||
c3033b01 | 4326 | static bool |
2d7edb92 | 4327 | #ifdef CONFIG_E1000_NAPI |
581d708e MC |
4328 | e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
4329 | struct e1000_rx_ring *rx_ring, | |
4330 | int *work_done, int work_to_do) | |
2d7edb92 | 4331 | #else |
581d708e MC |
4332 | e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
4333 | struct e1000_rx_ring *rx_ring) | |
2d7edb92 MC |
4334 | #endif |
4335 | { | |
86c3d59f | 4336 | union e1000_rx_desc_packet_split *rx_desc, *next_rxd; |
2d7edb92 MC |
4337 | struct net_device *netdev = adapter->netdev; |
4338 | struct pci_dev *pdev = adapter->pdev; | |
86c3d59f | 4339 | struct e1000_buffer *buffer_info, *next_buffer; |
2d7edb92 MC |
4340 | struct e1000_ps_page *ps_page; |
4341 | struct e1000_ps_page_dma *ps_page_dma; | |
24f476ee | 4342 | struct sk_buff *skb; |
2d7edb92 | 4343 | unsigned int i, j; |
406874a7 | 4344 | u32 length, staterr; |
72d64a43 | 4345 | int cleaned_count = 0; |
c3033b01 | 4346 | bool cleaned = false; |
835bb129 | 4347 | unsigned int total_rx_bytes=0, total_rx_packets=0; |
2d7edb92 MC |
4348 | |
4349 | i = rx_ring->next_to_clean; | |
4350 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
683a38f3 | 4351 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
9e2feace | 4352 | buffer_info = &rx_ring->buffer_info[i]; |
2d7edb92 | 4353 | |
96838a40 | 4354 | while (staterr & E1000_RXD_STAT_DD) { |
2d7edb92 MC |
4355 | ps_page = &rx_ring->ps_page[i]; |
4356 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
4357 | #ifdef CONFIG_E1000_NAPI | |
96838a40 | 4358 | if (unlikely(*work_done >= work_to_do)) |
2d7edb92 MC |
4359 | break; |
4360 | (*work_done)++; | |
4361 | #endif | |
86c3d59f JB |
4362 | skb = buffer_info->skb; |
4363 | ||
30320be8 JK |
4364 | /* in the packet split case this is header only */ |
4365 | prefetch(skb->data - NET_IP_ALIGN); | |
4366 | ||
86c3d59f JB |
4367 | if (++i == rx_ring->count) i = 0; |
4368 | next_rxd = E1000_RX_DESC_PS(*rx_ring, i); | |
30320be8 JK |
4369 | prefetch(next_rxd); |
4370 | ||
86c3d59f | 4371 | next_buffer = &rx_ring->buffer_info[i]; |
86c3d59f | 4372 | |
c3033b01 | 4373 | cleaned = true; |
72d64a43 | 4374 | cleaned_count++; |
2d7edb92 MC |
4375 | pci_unmap_single(pdev, buffer_info->dma, |
4376 | buffer_info->length, | |
4377 | PCI_DMA_FROMDEVICE); | |
4378 | ||
96838a40 | 4379 | if (unlikely(!(staterr & E1000_RXD_STAT_EOP))) { |
2d7edb92 MC |
4380 | E1000_DBG("%s: Packet Split buffers didn't pick up" |
4381 | " the full packet\n", netdev->name); | |
4382 | dev_kfree_skb_irq(skb); | |
4383 | goto next_desc; | |
4384 | } | |
1da177e4 | 4385 | |
96838a40 | 4386 | if (unlikely(staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK)) { |
2d7edb92 MC |
4387 | dev_kfree_skb_irq(skb); |
4388 | goto next_desc; | |
4389 | } | |
4390 | ||
4391 | length = le16_to_cpu(rx_desc->wb.middle.length0); | |
4392 | ||
96838a40 | 4393 | if (unlikely(!length)) { |
2d7edb92 MC |
4394 | E1000_DBG("%s: Last part of the packet spanning" |
4395 | " multiple descriptors\n", netdev->name); | |
4396 | dev_kfree_skb_irq(skb); | |
4397 | goto next_desc; | |
4398 | } | |
4399 | ||
4400 | /* Good Receive */ | |
4401 | skb_put(skb, length); | |
4402 | ||
dc7c6add JK |
4403 | { |
4404 | /* this looks ugly, but it seems compiler issues make it | |
4405 | more efficient than reusing j */ | |
4406 | int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]); | |
4407 | ||
4408 | /* page alloc/put takes too long and effects small packet | |
4409 | * throughput, so unsplit small packets and save the alloc/put*/ | |
1f753861 | 4410 | if (l1 && (l1 <= copybreak) && ((length + l1) <= adapter->rx_ps_bsize0)) { |
dc7c6add | 4411 | u8 *vaddr; |
76c224bc | 4412 | /* there is no documentation about how to call |
dc7c6add JK |
4413 | * kmap_atomic, so we can't hold the mapping |
4414 | * very long */ | |
4415 | pci_dma_sync_single_for_cpu(pdev, | |
4416 | ps_page_dma->ps_page_dma[0], | |
4417 | PAGE_SIZE, | |
4418 | PCI_DMA_FROMDEVICE); | |
4419 | vaddr = kmap_atomic(ps_page->ps_page[0], | |
4420 | KM_SKB_DATA_SOFTIRQ); | |
27a884dc | 4421 | memcpy(skb_tail_pointer(skb), vaddr, l1); |
dc7c6add JK |
4422 | kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ); |
4423 | pci_dma_sync_single_for_device(pdev, | |
4424 | ps_page_dma->ps_page_dma[0], | |
4425 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
f235a2ab AK |
4426 | /* remove the CRC */ |
4427 | l1 -= 4; | |
dc7c6add | 4428 | skb_put(skb, l1); |
dc7c6add JK |
4429 | goto copydone; |
4430 | } /* if */ | |
4431 | } | |
90fb5135 | 4432 | |
96838a40 | 4433 | for (j = 0; j < adapter->rx_ps_pages; j++) { |
30320be8 | 4434 | if (!(length= le16_to_cpu(rx_desc->wb.upper.length[j]))) |
2d7edb92 | 4435 | break; |
2d7edb92 MC |
4436 | pci_unmap_page(pdev, ps_page_dma->ps_page_dma[j], |
4437 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
4438 | ps_page_dma->ps_page_dma[j] = 0; | |
329bfd0b JK |
4439 | skb_fill_page_desc(skb, j, ps_page->ps_page[j], 0, |
4440 | length); | |
2d7edb92 | 4441 | ps_page->ps_page[j] = NULL; |
2d7edb92 MC |
4442 | skb->len += length; |
4443 | skb->data_len += length; | |
5d51b80f | 4444 | skb->truesize += length; |
2d7edb92 MC |
4445 | } |
4446 | ||
f235a2ab AK |
4447 | /* strip the ethernet crc, problem is we're using pages now so |
4448 | * this whole operation can get a little cpu intensive */ | |
4449 | pskb_trim(skb, skb->len - 4); | |
4450 | ||
dc7c6add | 4451 | copydone: |
835bb129 JB |
4452 | total_rx_bytes += skb->len; |
4453 | total_rx_packets++; | |
4454 | ||
2d7edb92 | 4455 | e1000_rx_checksum(adapter, staterr, |
c3d7a3a4 | 4456 | le16_to_cpu(rx_desc->wb.lower.hi_dword.csum_ip.csum), skb); |
2d7edb92 MC |
4457 | skb->protocol = eth_type_trans(skb, netdev); |
4458 | ||
96838a40 | 4459 | if (likely(rx_desc->wb.upper.header_status & |
c3d7a3a4 | 4460 | cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP))) |
e4c811c9 | 4461 | adapter->rx_hdr_split++; |
2d7edb92 | 4462 | #ifdef CONFIG_E1000_NAPI |
96838a40 | 4463 | if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) { |
2d7edb92 | 4464 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
38b22195 | 4465 | le16_to_cpu(rx_desc->wb.middle.vlan)); |
2d7edb92 MC |
4466 | } else { |
4467 | netif_receive_skb(skb); | |
4468 | } | |
4469 | #else /* CONFIG_E1000_NAPI */ | |
96838a40 | 4470 | if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) { |
2d7edb92 | 4471 | vlan_hwaccel_rx(skb, adapter->vlgrp, |
38b22195 | 4472 | le16_to_cpu(rx_desc->wb.middle.vlan)); |
2d7edb92 MC |
4473 | } else { |
4474 | netif_rx(skb); | |
4475 | } | |
4476 | #endif /* CONFIG_E1000_NAPI */ | |
4477 | netdev->last_rx = jiffies; | |
4478 | ||
4479 | next_desc: | |
c3d7a3a4 | 4480 | rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF); |
2d7edb92 | 4481 | buffer_info->skb = NULL; |
2d7edb92 | 4482 | |
72d64a43 JK |
4483 | /* return some buffers to hardware, one at a time is too slow */ |
4484 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
4485 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
4486 | cleaned_count = 0; | |
4487 | } | |
4488 | ||
30320be8 | 4489 | /* use prefetched values */ |
86c3d59f JB |
4490 | rx_desc = next_rxd; |
4491 | buffer_info = next_buffer; | |
4492 | ||
683a38f3 | 4493 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
2d7edb92 MC |
4494 | } |
4495 | rx_ring->next_to_clean = i; | |
72d64a43 JK |
4496 | |
4497 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
4498 | if (cleaned_count) | |
4499 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
1da177e4 | 4500 | |
835bb129 JB |
4501 | adapter->total_rx_packets += total_rx_packets; |
4502 | adapter->total_rx_bytes += total_rx_bytes; | |
ef90e4ec AK |
4503 | adapter->net_stats.rx_bytes += total_rx_bytes; |
4504 | adapter->net_stats.rx_packets += total_rx_packets; | |
1da177e4 LT |
4505 | return cleaned; |
4506 | } | |
4507 | ||
4508 | /** | |
2d7edb92 | 4509 | * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
1da177e4 LT |
4510 | * @adapter: address of board private structure |
4511 | **/ | |
4512 | ||
4513 | static void | |
581d708e | 4514 | e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
72d64a43 | 4515 | struct e1000_rx_ring *rx_ring, |
a292ca6e | 4516 | int cleaned_count) |
1da177e4 | 4517 | { |
1da177e4 LT |
4518 | struct net_device *netdev = adapter->netdev; |
4519 | struct pci_dev *pdev = adapter->pdev; | |
4520 | struct e1000_rx_desc *rx_desc; | |
4521 | struct e1000_buffer *buffer_info; | |
4522 | struct sk_buff *skb; | |
2648345f MC |
4523 | unsigned int i; |
4524 | unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN; | |
1da177e4 LT |
4525 | |
4526 | i = rx_ring->next_to_use; | |
4527 | buffer_info = &rx_ring->buffer_info[i]; | |
4528 | ||
a292ca6e | 4529 | while (cleaned_count--) { |
ca6f7224 CH |
4530 | skb = buffer_info->skb; |
4531 | if (skb) { | |
a292ca6e JK |
4532 | skb_trim(skb, 0); |
4533 | goto map_skb; | |
4534 | } | |
4535 | ||
ca6f7224 | 4536 | skb = netdev_alloc_skb(netdev, bufsz); |
96838a40 | 4537 | if (unlikely(!skb)) { |
1da177e4 | 4538 | /* Better luck next round */ |
72d64a43 | 4539 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
4540 | break; |
4541 | } | |
4542 | ||
2648345f | 4543 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
4544 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
4545 | struct sk_buff *oldskb = skb; | |
2648345f MC |
4546 | DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes " |
4547 | "at %p\n", bufsz, skb->data); | |
4548 | /* Try again, without freeing the previous */ | |
87f5032e | 4549 | skb = netdev_alloc_skb(netdev, bufsz); |
2648345f | 4550 | /* Failed allocation, critical failure */ |
1da177e4 LT |
4551 | if (!skb) { |
4552 | dev_kfree_skb(oldskb); | |
4553 | break; | |
4554 | } | |
2648345f | 4555 | |
1da177e4 LT |
4556 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
4557 | /* give up */ | |
4558 | dev_kfree_skb(skb); | |
4559 | dev_kfree_skb(oldskb); | |
4560 | break; /* while !buffer_info->skb */ | |
1da177e4 | 4561 | } |
ca6f7224 CH |
4562 | |
4563 | /* Use new allocation */ | |
4564 | dev_kfree_skb(oldskb); | |
1da177e4 | 4565 | } |
1da177e4 LT |
4566 | /* Make buffer alignment 2 beyond a 16 byte boundary |
4567 | * this will result in a 16 byte aligned IP header after | |
4568 | * the 14 byte MAC header is removed | |
4569 | */ | |
4570 | skb_reserve(skb, NET_IP_ALIGN); | |
4571 | ||
1da177e4 LT |
4572 | buffer_info->skb = skb; |
4573 | buffer_info->length = adapter->rx_buffer_len; | |
a292ca6e | 4574 | map_skb: |
1da177e4 LT |
4575 | buffer_info->dma = pci_map_single(pdev, |
4576 | skb->data, | |
4577 | adapter->rx_buffer_len, | |
4578 | PCI_DMA_FROMDEVICE); | |
4579 | ||
2648345f MC |
4580 | /* Fix for errata 23, can't cross 64kB boundary */ |
4581 | if (!e1000_check_64k_bound(adapter, | |
4582 | (void *)(unsigned long)buffer_info->dma, | |
4583 | adapter->rx_buffer_len)) { | |
4584 | DPRINTK(RX_ERR, ERR, | |
4585 | "dma align check failed: %u bytes at %p\n", | |
4586 | adapter->rx_buffer_len, | |
4587 | (void *)(unsigned long)buffer_info->dma); | |
1da177e4 LT |
4588 | dev_kfree_skb(skb); |
4589 | buffer_info->skb = NULL; | |
4590 | ||
2648345f | 4591 | pci_unmap_single(pdev, buffer_info->dma, |
1da177e4 LT |
4592 | adapter->rx_buffer_len, |
4593 | PCI_DMA_FROMDEVICE); | |
4594 | ||
4595 | break; /* while !buffer_info->skb */ | |
4596 | } | |
1da177e4 LT |
4597 | rx_desc = E1000_RX_DESC(*rx_ring, i); |
4598 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
4599 | ||
96838a40 JB |
4600 | if (unlikely(++i == rx_ring->count)) |
4601 | i = 0; | |
1da177e4 LT |
4602 | buffer_info = &rx_ring->buffer_info[i]; |
4603 | } | |
4604 | ||
b92ff8ee JB |
4605 | if (likely(rx_ring->next_to_use != i)) { |
4606 | rx_ring->next_to_use = i; | |
4607 | if (unlikely(i-- == 0)) | |
4608 | i = (rx_ring->count - 1); | |
4609 | ||
4610 | /* Force memory writes to complete before letting h/w | |
4611 | * know there are new descriptors to fetch. (Only | |
4612 | * applicable for weak-ordered memory model archs, | |
4613 | * such as IA-64). */ | |
4614 | wmb(); | |
4615 | writel(i, adapter->hw.hw_addr + rx_ring->rdt); | |
4616 | } | |
1da177e4 LT |
4617 | } |
4618 | ||
2d7edb92 MC |
4619 | /** |
4620 | * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split | |
4621 | * @adapter: address of board private structure | |
4622 | **/ | |
4623 | ||
4624 | static void | |
581d708e | 4625 | e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, |
72d64a43 JK |
4626 | struct e1000_rx_ring *rx_ring, |
4627 | int cleaned_count) | |
2d7edb92 | 4628 | { |
2d7edb92 MC |
4629 | struct net_device *netdev = adapter->netdev; |
4630 | struct pci_dev *pdev = adapter->pdev; | |
4631 | union e1000_rx_desc_packet_split *rx_desc; | |
4632 | struct e1000_buffer *buffer_info; | |
4633 | struct e1000_ps_page *ps_page; | |
4634 | struct e1000_ps_page_dma *ps_page_dma; | |
4635 | struct sk_buff *skb; | |
4636 | unsigned int i, j; | |
4637 | ||
4638 | i = rx_ring->next_to_use; | |
4639 | buffer_info = &rx_ring->buffer_info[i]; | |
4640 | ps_page = &rx_ring->ps_page[i]; | |
4641 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
4642 | ||
72d64a43 | 4643 | while (cleaned_count--) { |
2d7edb92 MC |
4644 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
4645 | ||
96838a40 | 4646 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
e4c811c9 MC |
4647 | if (j < adapter->rx_ps_pages) { |
4648 | if (likely(!ps_page->ps_page[j])) { | |
4649 | ps_page->ps_page[j] = | |
4650 | alloc_page(GFP_ATOMIC); | |
b92ff8ee JB |
4651 | if (unlikely(!ps_page->ps_page[j])) { |
4652 | adapter->alloc_rx_buff_failed++; | |
e4c811c9 | 4653 | goto no_buffers; |
b92ff8ee | 4654 | } |
e4c811c9 MC |
4655 | ps_page_dma->ps_page_dma[j] = |
4656 | pci_map_page(pdev, | |
4657 | ps_page->ps_page[j], | |
4658 | 0, PAGE_SIZE, | |
4659 | PCI_DMA_FROMDEVICE); | |
4660 | } | |
4661 | /* Refresh the desc even if buffer_addrs didn't | |
96838a40 | 4662 | * change because each write-back erases |
e4c811c9 MC |
4663 | * this info. |
4664 | */ | |
4665 | rx_desc->read.buffer_addr[j+1] = | |
4666 | cpu_to_le64(ps_page_dma->ps_page_dma[j]); | |
4667 | } else | |
3e18826c | 4668 | rx_desc->read.buffer_addr[j+1] = ~cpu_to_le64(0); |
2d7edb92 MC |
4669 | } |
4670 | ||
87f5032e | 4671 | skb = netdev_alloc_skb(netdev, |
90fb5135 | 4672 | adapter->rx_ps_bsize0 + NET_IP_ALIGN); |
2d7edb92 | 4673 | |
b92ff8ee JB |
4674 | if (unlikely(!skb)) { |
4675 | adapter->alloc_rx_buff_failed++; | |
2d7edb92 | 4676 | break; |
b92ff8ee | 4677 | } |
2d7edb92 MC |
4678 | |
4679 | /* Make buffer alignment 2 beyond a 16 byte boundary | |
4680 | * this will result in a 16 byte aligned IP header after | |
4681 | * the 14 byte MAC header is removed | |
4682 | */ | |
4683 | skb_reserve(skb, NET_IP_ALIGN); | |
4684 | ||
2d7edb92 MC |
4685 | buffer_info->skb = skb; |
4686 | buffer_info->length = adapter->rx_ps_bsize0; | |
4687 | buffer_info->dma = pci_map_single(pdev, skb->data, | |
4688 | adapter->rx_ps_bsize0, | |
4689 | PCI_DMA_FROMDEVICE); | |
4690 | ||
4691 | rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); | |
4692 | ||
96838a40 | 4693 | if (unlikely(++i == rx_ring->count)) i = 0; |
2d7edb92 MC |
4694 | buffer_info = &rx_ring->buffer_info[i]; |
4695 | ps_page = &rx_ring->ps_page[i]; | |
4696 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
4697 | } | |
4698 | ||
4699 | no_buffers: | |
b92ff8ee JB |
4700 | if (likely(rx_ring->next_to_use != i)) { |
4701 | rx_ring->next_to_use = i; | |
4702 | if (unlikely(i-- == 0)) i = (rx_ring->count - 1); | |
4703 | ||
4704 | /* Force memory writes to complete before letting h/w | |
4705 | * know there are new descriptors to fetch. (Only | |
4706 | * applicable for weak-ordered memory model archs, | |
4707 | * such as IA-64). */ | |
4708 | wmb(); | |
4709 | /* Hardware increments by 16 bytes, but packet split | |
4710 | * descriptors are 32 bytes...so we increment tail | |
4711 | * twice as much. | |
4712 | */ | |
4713 | writel(i<<1, adapter->hw.hw_addr + rx_ring->rdt); | |
4714 | } | |
2d7edb92 MC |
4715 | } |
4716 | ||
1da177e4 LT |
4717 | /** |
4718 | * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. | |
4719 | * @adapter: | |
4720 | **/ | |
4721 | ||
4722 | static void | |
4723 | e1000_smartspeed(struct e1000_adapter *adapter) | |
4724 | { | |
406874a7 JP |
4725 | u16 phy_status; |
4726 | u16 phy_ctrl; | |
1da177e4 | 4727 | |
96838a40 | 4728 | if ((adapter->hw.phy_type != e1000_phy_igp) || !adapter->hw.autoneg || |
1da177e4 LT |
4729 | !(adapter->hw.autoneg_advertised & ADVERTISE_1000_FULL)) |
4730 | return; | |
4731 | ||
96838a40 | 4732 | if (adapter->smartspeed == 0) { |
1da177e4 LT |
4733 | /* If Master/Slave config fault is asserted twice, |
4734 | * we assume back-to-back */ | |
4735 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); | |
96838a40 | 4736 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1da177e4 | 4737 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); |
96838a40 | 4738 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1da177e4 | 4739 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); |
96838a40 | 4740 | if (phy_ctrl & CR_1000T_MS_ENABLE) { |
1da177e4 LT |
4741 | phy_ctrl &= ~CR_1000T_MS_ENABLE; |
4742 | e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, | |
4743 | phy_ctrl); | |
4744 | adapter->smartspeed++; | |
96838a40 | 4745 | if (!e1000_phy_setup_autoneg(&adapter->hw) && |
1da177e4 LT |
4746 | !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, |
4747 | &phy_ctrl)) { | |
4748 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
4749 | MII_CR_RESTART_AUTO_NEG); | |
4750 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, | |
4751 | phy_ctrl); | |
4752 | } | |
4753 | } | |
4754 | return; | |
96838a40 | 4755 | } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { |
1da177e4 LT |
4756 | /* If still no link, perhaps using 2/3 pair cable */ |
4757 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); | |
4758 | phy_ctrl |= CR_1000T_MS_ENABLE; | |
4759 | e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_ctrl); | |
96838a40 | 4760 | if (!e1000_phy_setup_autoneg(&adapter->hw) && |
1da177e4 LT |
4761 | !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_ctrl)) { |
4762 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
4763 | MII_CR_RESTART_AUTO_NEG); | |
4764 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, phy_ctrl); | |
4765 | } | |
4766 | } | |
4767 | /* Restart process after E1000_SMARTSPEED_MAX iterations */ | |
96838a40 | 4768 | if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX) |
1da177e4 LT |
4769 | adapter->smartspeed = 0; |
4770 | } | |
4771 | ||
4772 | /** | |
4773 | * e1000_ioctl - | |
4774 | * @netdev: | |
4775 | * @ifreq: | |
4776 | * @cmd: | |
4777 | **/ | |
4778 | ||
4779 | static int | |
4780 | e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
4781 | { | |
4782 | switch (cmd) { | |
4783 | case SIOCGMIIPHY: | |
4784 | case SIOCGMIIREG: | |
4785 | case SIOCSMIIREG: | |
4786 | return e1000_mii_ioctl(netdev, ifr, cmd); | |
4787 | default: | |
4788 | return -EOPNOTSUPP; | |
4789 | } | |
4790 | } | |
4791 | ||
4792 | /** | |
4793 | * e1000_mii_ioctl - | |
4794 | * @netdev: | |
4795 | * @ifreq: | |
4796 | * @cmd: | |
4797 | **/ | |
4798 | ||
4799 | static int | |
4800 | e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
4801 | { | |
60490fe0 | 4802 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
4803 | struct mii_ioctl_data *data = if_mii(ifr); |
4804 | int retval; | |
406874a7 JP |
4805 | u16 mii_reg; |
4806 | u16 spddplx; | |
97876fc6 | 4807 | unsigned long flags; |
1da177e4 | 4808 | |
96838a40 | 4809 | if (adapter->hw.media_type != e1000_media_type_copper) |
1da177e4 LT |
4810 | return -EOPNOTSUPP; |
4811 | ||
4812 | switch (cmd) { | |
4813 | case SIOCGMIIPHY: | |
4814 | data->phy_id = adapter->hw.phy_addr; | |
4815 | break; | |
4816 | case SIOCGMIIREG: | |
96838a40 | 4817 | if (!capable(CAP_NET_ADMIN)) |
1da177e4 | 4818 | return -EPERM; |
97876fc6 | 4819 | spin_lock_irqsave(&adapter->stats_lock, flags); |
96838a40 | 4820 | if (e1000_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
97876fc6 MC |
4821 | &data->val_out)) { |
4822 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4823 | return -EIO; |
97876fc6 MC |
4824 | } |
4825 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 LT |
4826 | break; |
4827 | case SIOCSMIIREG: | |
96838a40 | 4828 | if (!capable(CAP_NET_ADMIN)) |
1da177e4 | 4829 | return -EPERM; |
96838a40 | 4830 | if (data->reg_num & ~(0x1F)) |
1da177e4 LT |
4831 | return -EFAULT; |
4832 | mii_reg = data->val_in; | |
97876fc6 | 4833 | spin_lock_irqsave(&adapter->stats_lock, flags); |
96838a40 | 4834 | if (e1000_write_phy_reg(&adapter->hw, data->reg_num, |
97876fc6 MC |
4835 | mii_reg)) { |
4836 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4837 | return -EIO; |
97876fc6 | 4838 | } |
f0163ac4 | 4839 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
dc86d32a | 4840 | if (adapter->hw.media_type == e1000_media_type_copper) { |
1da177e4 LT |
4841 | switch (data->reg_num) { |
4842 | case PHY_CTRL: | |
96838a40 | 4843 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4844 | break; |
96838a40 | 4845 | if (mii_reg & MII_CR_AUTO_NEG_EN) { |
1da177e4 LT |
4846 | adapter->hw.autoneg = 1; |
4847 | adapter->hw.autoneg_advertised = 0x2F; | |
4848 | } else { | |
4849 | if (mii_reg & 0x40) | |
4850 | spddplx = SPEED_1000; | |
4851 | else if (mii_reg & 0x2000) | |
4852 | spddplx = SPEED_100; | |
4853 | else | |
4854 | spddplx = SPEED_10; | |
4855 | spddplx += (mii_reg & 0x100) | |
cb764326 JK |
4856 | ? DUPLEX_FULL : |
4857 | DUPLEX_HALF; | |
1da177e4 LT |
4858 | retval = e1000_set_spd_dplx(adapter, |
4859 | spddplx); | |
f0163ac4 | 4860 | if (retval) |
1da177e4 LT |
4861 | return retval; |
4862 | } | |
2db10a08 AK |
4863 | if (netif_running(adapter->netdev)) |
4864 | e1000_reinit_locked(adapter); | |
4865 | else | |
1da177e4 LT |
4866 | e1000_reset(adapter); |
4867 | break; | |
4868 | case M88E1000_PHY_SPEC_CTRL: | |
4869 | case M88E1000_EXT_PHY_SPEC_CTRL: | |
f0163ac4 | 4870 | if (e1000_phy_reset(&adapter->hw)) |
1da177e4 LT |
4871 | return -EIO; |
4872 | break; | |
4873 | } | |
4874 | } else { | |
4875 | switch (data->reg_num) { | |
4876 | case PHY_CTRL: | |
96838a40 | 4877 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4878 | break; |
2db10a08 AK |
4879 | if (netif_running(adapter->netdev)) |
4880 | e1000_reinit_locked(adapter); | |
4881 | else | |
1da177e4 LT |
4882 | e1000_reset(adapter); |
4883 | break; | |
4884 | } | |
4885 | } | |
4886 | break; | |
4887 | default: | |
4888 | return -EOPNOTSUPP; | |
4889 | } | |
4890 | return E1000_SUCCESS; | |
4891 | } | |
4892 | ||
4893 | void | |
4894 | e1000_pci_set_mwi(struct e1000_hw *hw) | |
4895 | { | |
4896 | struct e1000_adapter *adapter = hw->back; | |
2648345f | 4897 | int ret_val = pci_set_mwi(adapter->pdev); |
1da177e4 | 4898 | |
96838a40 | 4899 | if (ret_val) |
2648345f | 4900 | DPRINTK(PROBE, ERR, "Error in setting MWI\n"); |
1da177e4 LT |
4901 | } |
4902 | ||
4903 | void | |
4904 | e1000_pci_clear_mwi(struct e1000_hw *hw) | |
4905 | { | |
4906 | struct e1000_adapter *adapter = hw->back; | |
4907 | ||
4908 | pci_clear_mwi(adapter->pdev); | |
4909 | } | |
4910 | ||
007755eb PO |
4911 | int |
4912 | e1000_pcix_get_mmrbc(struct e1000_hw *hw) | |
4913 | { | |
4914 | struct e1000_adapter *adapter = hw->back; | |
4915 | return pcix_get_mmrbc(adapter->pdev); | |
4916 | } | |
4917 | ||
4918 | void | |
4919 | e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc) | |
4920 | { | |
4921 | struct e1000_adapter *adapter = hw->back; | |
4922 | pcix_set_mmrbc(adapter->pdev, mmrbc); | |
4923 | } | |
4924 | ||
406874a7 JP |
4925 | s32 |
4926 | e1000_read_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value) | |
caeccb68 JK |
4927 | { |
4928 | struct e1000_adapter *adapter = hw->back; | |
406874a7 | 4929 | u16 cap_offset; |
caeccb68 JK |
4930 | |
4931 | cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP); | |
4932 | if (!cap_offset) | |
4933 | return -E1000_ERR_CONFIG; | |
4934 | ||
4935 | pci_read_config_word(adapter->pdev, cap_offset + reg, value); | |
4936 | ||
4937 | return E1000_SUCCESS; | |
4938 | } | |
4939 | ||
1da177e4 | 4940 | void |
406874a7 | 4941 | e1000_io_write(struct e1000_hw *hw, unsigned long port, u32 value) |
1da177e4 LT |
4942 | { |
4943 | outl(value, port); | |
4944 | } | |
4945 | ||
4946 | static void | |
4947 | e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) | |
4948 | { | |
60490fe0 | 4949 | struct e1000_adapter *adapter = netdev_priv(netdev); |
406874a7 | 4950 | u32 ctrl, rctl; |
1da177e4 | 4951 | |
9150b76a JB |
4952 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4953 | e1000_irq_disable(adapter); | |
1da177e4 LT |
4954 | adapter->vlgrp = grp; |
4955 | ||
96838a40 | 4956 | if (grp) { |
1da177e4 LT |
4957 | /* enable VLAN tag insert/strip */ |
4958 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
4959 | ctrl |= E1000_CTRL_VME; | |
4960 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
4961 | ||
cd94dd0b | 4962 | if (adapter->hw.mac_type != e1000_ich8lan) { |
90fb5135 AK |
4963 | /* enable VLAN receive filtering */ |
4964 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
4965 | rctl |= E1000_RCTL_VFE; | |
4966 | rctl &= ~E1000_RCTL_CFIEN; | |
4967 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
4968 | e1000_update_mng_vlan(adapter); | |
cd94dd0b | 4969 | } |
1da177e4 LT |
4970 | } else { |
4971 | /* disable VLAN tag insert/strip */ | |
4972 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
4973 | ctrl &= ~E1000_CTRL_VME; | |
4974 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
4975 | ||
cd94dd0b | 4976 | if (adapter->hw.mac_type != e1000_ich8lan) { |
90fb5135 AK |
4977 | /* disable VLAN filtering */ |
4978 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
4979 | rctl &= ~E1000_RCTL_VFE; | |
4980 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
4981 | if (adapter->mng_vlan_id != | |
406874a7 | 4982 | (u16)E1000_MNG_VLAN_NONE) { |
90fb5135 AK |
4983 | e1000_vlan_rx_kill_vid(netdev, |
4984 | adapter->mng_vlan_id); | |
4985 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
4986 | } | |
cd94dd0b | 4987 | } |
1da177e4 LT |
4988 | } |
4989 | ||
9150b76a JB |
4990 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4991 | e1000_irq_enable(adapter); | |
1da177e4 LT |
4992 | } |
4993 | ||
4994 | static void | |
406874a7 | 4995 | e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
1da177e4 | 4996 | { |
60490fe0 | 4997 | struct e1000_adapter *adapter = netdev_priv(netdev); |
406874a7 | 4998 | u32 vfta, index; |
96838a40 JB |
4999 | |
5000 | if ((adapter->hw.mng_cookie.status & | |
5001 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && | |
5002 | (vid == adapter->mng_vlan_id)) | |
2d7edb92 | 5003 | return; |
1da177e4 LT |
5004 | /* add VID to filter table */ |
5005 | index = (vid >> 5) & 0x7F; | |
5006 | vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
5007 | vfta |= (1 << (vid & 0x1F)); | |
5008 | e1000_write_vfta(&adapter->hw, index, vfta); | |
5009 | } | |
5010 | ||
5011 | static void | |
406874a7 | 5012 | e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
1da177e4 | 5013 | { |
60490fe0 | 5014 | struct e1000_adapter *adapter = netdev_priv(netdev); |
406874a7 | 5015 | u32 vfta, index; |
1da177e4 | 5016 | |
9150b76a JB |
5017 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
5018 | e1000_irq_disable(adapter); | |
5c15bdec | 5019 | vlan_group_set_device(adapter->vlgrp, vid, NULL); |
9150b76a JB |
5020 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
5021 | e1000_irq_enable(adapter); | |
1da177e4 | 5022 | |
96838a40 JB |
5023 | if ((adapter->hw.mng_cookie.status & |
5024 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && | |
ff147013 JK |
5025 | (vid == adapter->mng_vlan_id)) { |
5026 | /* release control to f/w */ | |
5027 | e1000_release_hw_control(adapter); | |
2d7edb92 | 5028 | return; |
ff147013 JK |
5029 | } |
5030 | ||
1da177e4 LT |
5031 | /* remove VID from filter table */ |
5032 | index = (vid >> 5) & 0x7F; | |
5033 | vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
5034 | vfta &= ~(1 << (vid & 0x1F)); | |
5035 | e1000_write_vfta(&adapter->hw, index, vfta); | |
5036 | } | |
5037 | ||
5038 | static void | |
5039 | e1000_restore_vlan(struct e1000_adapter *adapter) | |
5040 | { | |
5041 | e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
5042 | ||
96838a40 | 5043 | if (adapter->vlgrp) { |
406874a7 | 5044 | u16 vid; |
96838a40 | 5045 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { |
5c15bdec | 5046 | if (!vlan_group_get_device(adapter->vlgrp, vid)) |
1da177e4 LT |
5047 | continue; |
5048 | e1000_vlan_rx_add_vid(adapter->netdev, vid); | |
5049 | } | |
5050 | } | |
5051 | } | |
5052 | ||
5053 | int | |
406874a7 | 5054 | e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx) |
1da177e4 LT |
5055 | { |
5056 | adapter->hw.autoneg = 0; | |
5057 | ||
6921368f | 5058 | /* Fiber NICs only allow 1000 gbps Full duplex */ |
96838a40 | 5059 | if ((adapter->hw.media_type == e1000_media_type_fiber) && |
6921368f MC |
5060 | spddplx != (SPEED_1000 + DUPLEX_FULL)) { |
5061 | DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); | |
5062 | return -EINVAL; | |
5063 | } | |
5064 | ||
96838a40 | 5065 | switch (spddplx) { |
1da177e4 LT |
5066 | case SPEED_10 + DUPLEX_HALF: |
5067 | adapter->hw.forced_speed_duplex = e1000_10_half; | |
5068 | break; | |
5069 | case SPEED_10 + DUPLEX_FULL: | |
5070 | adapter->hw.forced_speed_duplex = e1000_10_full; | |
5071 | break; | |
5072 | case SPEED_100 + DUPLEX_HALF: | |
5073 | adapter->hw.forced_speed_duplex = e1000_100_half; | |
5074 | break; | |
5075 | case SPEED_100 + DUPLEX_FULL: | |
5076 | adapter->hw.forced_speed_duplex = e1000_100_full; | |
5077 | break; | |
5078 | case SPEED_1000 + DUPLEX_FULL: | |
5079 | adapter->hw.autoneg = 1; | |
5080 | adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL; | |
5081 | break; | |
5082 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ | |
5083 | default: | |
2648345f | 5084 | DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); |
1da177e4 LT |
5085 | return -EINVAL; |
5086 | } | |
5087 | return 0; | |
5088 | } | |
5089 | ||
1da177e4 | 5090 | static int |
829ca9a3 | 5091 | e1000_suspend(struct pci_dev *pdev, pm_message_t state) |
1da177e4 LT |
5092 | { |
5093 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 5094 | struct e1000_adapter *adapter = netdev_priv(netdev); |
406874a7 JP |
5095 | u32 ctrl, ctrl_ext, rctl, status; |
5096 | u32 wufc = adapter->wol; | |
6fdfef16 | 5097 | #ifdef CONFIG_PM |
240b1710 | 5098 | int retval = 0; |
6fdfef16 | 5099 | #endif |
1da177e4 LT |
5100 | |
5101 | netif_device_detach(netdev); | |
5102 | ||
2db10a08 AK |
5103 | if (netif_running(netdev)) { |
5104 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); | |
1da177e4 | 5105 | e1000_down(adapter); |
2db10a08 | 5106 | } |
1da177e4 | 5107 | |
2f82665f | 5108 | #ifdef CONFIG_PM |
1d33e9c6 | 5109 | retval = pci_save_state(pdev); |
2f82665f JB |
5110 | if (retval) |
5111 | return retval; | |
5112 | #endif | |
5113 | ||
1da177e4 | 5114 | status = E1000_READ_REG(&adapter->hw, STATUS); |
96838a40 | 5115 | if (status & E1000_STATUS_LU) |
1da177e4 LT |
5116 | wufc &= ~E1000_WUFC_LNKC; |
5117 | ||
96838a40 | 5118 | if (wufc) { |
1da177e4 | 5119 | e1000_setup_rctl(adapter); |
db0ce50d | 5120 | e1000_set_rx_mode(netdev); |
1da177e4 LT |
5121 | |
5122 | /* turn on all-multi mode if wake on multicast is enabled */ | |
120cd576 | 5123 | if (wufc & E1000_WUFC_MC) { |
1da177e4 LT |
5124 | rctl = E1000_READ_REG(&adapter->hw, RCTL); |
5125 | rctl |= E1000_RCTL_MPE; | |
5126 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
5127 | } | |
5128 | ||
96838a40 | 5129 | if (adapter->hw.mac_type >= e1000_82540) { |
1da177e4 LT |
5130 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); |
5131 | /* advertise wake from D3Cold */ | |
5132 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
5133 | /* phy power management enable */ | |
5134 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
5135 | ctrl |= E1000_CTRL_ADVD3WUC | | |
5136 | E1000_CTRL_EN_PHY_PWR_MGMT; | |
5137 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
5138 | } | |
5139 | ||
96838a40 | 5140 | if (adapter->hw.media_type == e1000_media_type_fiber || |
1da177e4 LT |
5141 | adapter->hw.media_type == e1000_media_type_internal_serdes) { |
5142 | /* keep the laser running in D3 */ | |
5143 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); | |
5144 | ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; | |
5145 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, ctrl_ext); | |
5146 | } | |
5147 | ||
2d7edb92 MC |
5148 | /* Allow time for pending master requests to run */ |
5149 | e1000_disable_pciex_master(&adapter->hw); | |
5150 | ||
1da177e4 LT |
5151 | E1000_WRITE_REG(&adapter->hw, WUC, E1000_WUC_PME_EN); |
5152 | E1000_WRITE_REG(&adapter->hw, WUFC, wufc); | |
d0e027db AK |
5153 | pci_enable_wake(pdev, PCI_D3hot, 1); |
5154 | pci_enable_wake(pdev, PCI_D3cold, 1); | |
1da177e4 LT |
5155 | } else { |
5156 | E1000_WRITE_REG(&adapter->hw, WUC, 0); | |
5157 | E1000_WRITE_REG(&adapter->hw, WUFC, 0); | |
d0e027db AK |
5158 | pci_enable_wake(pdev, PCI_D3hot, 0); |
5159 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
1da177e4 LT |
5160 | } |
5161 | ||
0fccd0e9 JG |
5162 | e1000_release_manageability(adapter); |
5163 | ||
5164 | /* make sure adapter isn't asleep if manageability is enabled */ | |
5165 | if (adapter->en_mng_pt) { | |
5166 | pci_enable_wake(pdev, PCI_D3hot, 1); | |
5167 | pci_enable_wake(pdev, PCI_D3cold, 1); | |
1da177e4 LT |
5168 | } |
5169 | ||
cd94dd0b AK |
5170 | if (adapter->hw.phy_type == e1000_phy_igp_3) |
5171 | e1000_phy_powerdown_workaround(&adapter->hw); | |
5172 | ||
edd106fc AK |
5173 | if (netif_running(netdev)) |
5174 | e1000_free_irq(adapter); | |
5175 | ||
b55ccb35 JK |
5176 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
5177 | * would have already happened in close and is redundant. */ | |
5178 | e1000_release_hw_control(adapter); | |
2d7edb92 | 5179 | |
1da177e4 | 5180 | pci_disable_device(pdev); |
240b1710 | 5181 | |
d0e027db | 5182 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); |
1da177e4 LT |
5183 | |
5184 | return 0; | |
5185 | } | |
5186 | ||
2f82665f | 5187 | #ifdef CONFIG_PM |
1da177e4 LT |
5188 | static int |
5189 | e1000_resume(struct pci_dev *pdev) | |
5190 | { | |
5191 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 5192 | struct e1000_adapter *adapter = netdev_priv(netdev); |
406874a7 | 5193 | u32 err; |
1da177e4 | 5194 | |
d0e027db | 5195 | pci_set_power_state(pdev, PCI_D0); |
1d33e9c6 | 5196 | pci_restore_state(pdev); |
3d1dd8cb AK |
5197 | if ((err = pci_enable_device(pdev))) { |
5198 | printk(KERN_ERR "e1000: Cannot enable PCI device from suspend\n"); | |
5199 | return err; | |
5200 | } | |
a4cb847d | 5201 | pci_set_master(pdev); |
1da177e4 | 5202 | |
d0e027db AK |
5203 | pci_enable_wake(pdev, PCI_D3hot, 0); |
5204 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
1da177e4 | 5205 | |
edd106fc AK |
5206 | if (netif_running(netdev) && (err = e1000_request_irq(adapter))) |
5207 | return err; | |
5208 | ||
5209 | e1000_power_up_phy(adapter); | |
1da177e4 LT |
5210 | e1000_reset(adapter); |
5211 | E1000_WRITE_REG(&adapter->hw, WUS, ~0); | |
5212 | ||
0fccd0e9 JG |
5213 | e1000_init_manageability(adapter); |
5214 | ||
96838a40 | 5215 | if (netif_running(netdev)) |
1da177e4 LT |
5216 | e1000_up(adapter); |
5217 | ||
5218 | netif_device_attach(netdev); | |
5219 | ||
b55ccb35 JK |
5220 | /* If the controller is 82573 and f/w is AMT, do not set |
5221 | * DRV_LOAD until the interface is up. For all other cases, | |
5222 | * let the f/w know that the h/w is now under the control | |
5223 | * of the driver. */ | |
5224 | if (adapter->hw.mac_type != e1000_82573 || | |
5225 | !e1000_check_mng_mode(&adapter->hw)) | |
5226 | e1000_get_hw_control(adapter); | |
2d7edb92 | 5227 | |
1da177e4 LT |
5228 | return 0; |
5229 | } | |
5230 | #endif | |
c653e635 AK |
5231 | |
5232 | static void e1000_shutdown(struct pci_dev *pdev) | |
5233 | { | |
5234 | e1000_suspend(pdev, PMSG_SUSPEND); | |
5235 | } | |
5236 | ||
1da177e4 LT |
5237 | #ifdef CONFIG_NET_POLL_CONTROLLER |
5238 | /* | |
5239 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
5240 | * without having to re-enable interrupts. It's not called while | |
5241 | * the interrupt routine is executing. | |
5242 | */ | |
5243 | static void | |
2648345f | 5244 | e1000_netpoll(struct net_device *netdev) |
1da177e4 | 5245 | { |
60490fe0 | 5246 | struct e1000_adapter *adapter = netdev_priv(netdev); |
d3d9e484 | 5247 | |
1da177e4 | 5248 | disable_irq(adapter->pdev->irq); |
7d12e780 | 5249 | e1000_intr(adapter->pdev->irq, netdev); |
e8da8be1 JK |
5250 | #ifndef CONFIG_E1000_NAPI |
5251 | adapter->clean_rx(adapter, adapter->rx_ring); | |
5252 | #endif | |
1da177e4 LT |
5253 | enable_irq(adapter->pdev->irq); |
5254 | } | |
5255 | #endif | |
5256 | ||
9026729b AK |
5257 | /** |
5258 | * e1000_io_error_detected - called when PCI error is detected | |
5259 | * @pdev: Pointer to PCI device | |
5260 | * @state: The current pci conneection state | |
5261 | * | |
5262 | * This function is called after a PCI bus error affecting | |
5263 | * this device has been detected. | |
5264 | */ | |
5265 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state) | |
5266 | { | |
5267 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5268 | struct e1000_adapter *adapter = netdev->priv; | |
5269 | ||
5270 | netif_device_detach(netdev); | |
5271 | ||
5272 | if (netif_running(netdev)) | |
5273 | e1000_down(adapter); | |
72e8d6bb | 5274 | pci_disable_device(pdev); |
9026729b AK |
5275 | |
5276 | /* Request a slot slot reset. */ | |
5277 | return PCI_ERS_RESULT_NEED_RESET; | |
5278 | } | |
5279 | ||
5280 | /** | |
5281 | * e1000_io_slot_reset - called after the pci bus has been reset. | |
5282 | * @pdev: Pointer to PCI device | |
5283 | * | |
5284 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
5285 | * resembles the first-half of the e1000_resume routine. | |
5286 | */ | |
5287 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) | |
5288 | { | |
5289 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5290 | struct e1000_adapter *adapter = netdev->priv; | |
5291 | ||
5292 | if (pci_enable_device(pdev)) { | |
5293 | printk(KERN_ERR "e1000: Cannot re-enable PCI device after reset.\n"); | |
5294 | return PCI_ERS_RESULT_DISCONNECT; | |
5295 | } | |
5296 | pci_set_master(pdev); | |
5297 | ||
dbf38c94 LV |
5298 | pci_enable_wake(pdev, PCI_D3hot, 0); |
5299 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
9026729b | 5300 | |
9026729b AK |
5301 | e1000_reset(adapter); |
5302 | E1000_WRITE_REG(&adapter->hw, WUS, ~0); | |
5303 | ||
5304 | return PCI_ERS_RESULT_RECOVERED; | |
5305 | } | |
5306 | ||
5307 | /** | |
5308 | * e1000_io_resume - called when traffic can start flowing again. | |
5309 | * @pdev: Pointer to PCI device | |
5310 | * | |
5311 | * This callback is called when the error recovery driver tells us that | |
5312 | * its OK to resume normal operation. Implementation resembles the | |
5313 | * second-half of the e1000_resume routine. | |
5314 | */ | |
5315 | static void e1000_io_resume(struct pci_dev *pdev) | |
5316 | { | |
5317 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5318 | struct e1000_adapter *adapter = netdev->priv; | |
0fccd0e9 JG |
5319 | |
5320 | e1000_init_manageability(adapter); | |
9026729b AK |
5321 | |
5322 | if (netif_running(netdev)) { | |
5323 | if (e1000_up(adapter)) { | |
5324 | printk("e1000: can't bring device back up after reset\n"); | |
5325 | return; | |
5326 | } | |
5327 | } | |
5328 | ||
5329 | netif_device_attach(netdev); | |
5330 | ||
0fccd0e9 JG |
5331 | /* If the controller is 82573 and f/w is AMT, do not set |
5332 | * DRV_LOAD until the interface is up. For all other cases, | |
5333 | * let the f/w know that the h/w is now under the control | |
5334 | * of the driver. */ | |
5335 | if (adapter->hw.mac_type != e1000_82573 || | |
5336 | !e1000_check_mng_mode(&adapter->hw)) | |
5337 | e1000_get_hw_control(adapter); | |
9026729b | 5338 | |
9026729b AK |
5339 | } |
5340 | ||
1da177e4 | 5341 | /* e1000_main.c */ |