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Commit | Line | Data |
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1da177e4 LT |
1 | /******************************************************************************* |
2 | ||
0abb6eb1 AK |
3 | Intel PRO/1000 Linux driver |
4 | Copyright(c) 1999 - 2006 Intel Corporation. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify it | |
7 | under the terms and conditions of the GNU General Public License, | |
8 | version 2, as published by the Free Software Foundation. | |
9 | ||
10 | This program is distributed in the hope it will be useful, but WITHOUT | |
11 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
1da177e4 | 13 | more details. |
0abb6eb1 | 14 | |
1da177e4 | 15 | You should have received a copy of the GNU General Public License along with |
0abb6eb1 AK |
16 | this program; if not, write to the Free Software Foundation, Inc., |
17 | 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | ||
19 | The full GNU General Public License is included in this distribution in | |
20 | the file called "COPYING". | |
21 | ||
1da177e4 LT |
22 | Contact Information: |
23 | Linux NICS <linux.nics@intel.com> | |
3d41e30a | 24 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
1da177e4 LT |
25 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
26 | ||
27 | *******************************************************************************/ | |
28 | ||
29 | #include "e1000.h" | |
30 | ||
1da177e4 | 31 | char e1000_driver_name[] = "e1000"; |
3ad2cc67 | 32 | static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver"; |
1da177e4 LT |
33 | #ifndef CONFIG_E1000_NAPI |
34 | #define DRIVERNAPI | |
35 | #else | |
36 | #define DRIVERNAPI "-NAPI" | |
37 | #endif | |
ff1e55b0 | 38 | #define DRV_VERSION "7.2.9-k4"DRIVERNAPI |
1da177e4 | 39 | char e1000_driver_version[] = DRV_VERSION; |
3d41e30a | 40 | static char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation."; |
1da177e4 LT |
41 | |
42 | /* e1000_pci_tbl - PCI Device ID Table | |
43 | * | |
44 | * Last entry must be all 0s | |
45 | * | |
46 | * Macro expands to... | |
47 | * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)} | |
48 | */ | |
49 | static struct pci_device_id e1000_pci_tbl[] = { | |
50 | INTEL_E1000_ETHERNET_DEVICE(0x1000), | |
51 | INTEL_E1000_ETHERNET_DEVICE(0x1001), | |
52 | INTEL_E1000_ETHERNET_DEVICE(0x1004), | |
53 | INTEL_E1000_ETHERNET_DEVICE(0x1008), | |
54 | INTEL_E1000_ETHERNET_DEVICE(0x1009), | |
55 | INTEL_E1000_ETHERNET_DEVICE(0x100C), | |
56 | INTEL_E1000_ETHERNET_DEVICE(0x100D), | |
57 | INTEL_E1000_ETHERNET_DEVICE(0x100E), | |
58 | INTEL_E1000_ETHERNET_DEVICE(0x100F), | |
59 | INTEL_E1000_ETHERNET_DEVICE(0x1010), | |
60 | INTEL_E1000_ETHERNET_DEVICE(0x1011), | |
61 | INTEL_E1000_ETHERNET_DEVICE(0x1012), | |
62 | INTEL_E1000_ETHERNET_DEVICE(0x1013), | |
63 | INTEL_E1000_ETHERNET_DEVICE(0x1014), | |
64 | INTEL_E1000_ETHERNET_DEVICE(0x1015), | |
65 | INTEL_E1000_ETHERNET_DEVICE(0x1016), | |
66 | INTEL_E1000_ETHERNET_DEVICE(0x1017), | |
67 | INTEL_E1000_ETHERNET_DEVICE(0x1018), | |
68 | INTEL_E1000_ETHERNET_DEVICE(0x1019), | |
2648345f | 69 | INTEL_E1000_ETHERNET_DEVICE(0x101A), |
1da177e4 LT |
70 | INTEL_E1000_ETHERNET_DEVICE(0x101D), |
71 | INTEL_E1000_ETHERNET_DEVICE(0x101E), | |
72 | INTEL_E1000_ETHERNET_DEVICE(0x1026), | |
73 | INTEL_E1000_ETHERNET_DEVICE(0x1027), | |
74 | INTEL_E1000_ETHERNET_DEVICE(0x1028), | |
ae2c3860 AK |
75 | INTEL_E1000_ETHERNET_DEVICE(0x1049), |
76 | INTEL_E1000_ETHERNET_DEVICE(0x104A), | |
77 | INTEL_E1000_ETHERNET_DEVICE(0x104B), | |
78 | INTEL_E1000_ETHERNET_DEVICE(0x104C), | |
79 | INTEL_E1000_ETHERNET_DEVICE(0x104D), | |
07b8fede MC |
80 | INTEL_E1000_ETHERNET_DEVICE(0x105E), |
81 | INTEL_E1000_ETHERNET_DEVICE(0x105F), | |
82 | INTEL_E1000_ETHERNET_DEVICE(0x1060), | |
1da177e4 LT |
83 | INTEL_E1000_ETHERNET_DEVICE(0x1075), |
84 | INTEL_E1000_ETHERNET_DEVICE(0x1076), | |
85 | INTEL_E1000_ETHERNET_DEVICE(0x1077), | |
86 | INTEL_E1000_ETHERNET_DEVICE(0x1078), | |
87 | INTEL_E1000_ETHERNET_DEVICE(0x1079), | |
88 | INTEL_E1000_ETHERNET_DEVICE(0x107A), | |
89 | INTEL_E1000_ETHERNET_DEVICE(0x107B), | |
90 | INTEL_E1000_ETHERNET_DEVICE(0x107C), | |
07b8fede MC |
91 | INTEL_E1000_ETHERNET_DEVICE(0x107D), |
92 | INTEL_E1000_ETHERNET_DEVICE(0x107E), | |
93 | INTEL_E1000_ETHERNET_DEVICE(0x107F), | |
1da177e4 | 94 | INTEL_E1000_ETHERNET_DEVICE(0x108A), |
2648345f MC |
95 | INTEL_E1000_ETHERNET_DEVICE(0x108B), |
96 | INTEL_E1000_ETHERNET_DEVICE(0x108C), | |
6418ecc6 JK |
97 | INTEL_E1000_ETHERNET_DEVICE(0x1096), |
98 | INTEL_E1000_ETHERNET_DEVICE(0x1098), | |
b7ee49db | 99 | INTEL_E1000_ETHERNET_DEVICE(0x1099), |
07b8fede | 100 | INTEL_E1000_ETHERNET_DEVICE(0x109A), |
5881cde8 | 101 | INTEL_E1000_ETHERNET_DEVICE(0x10A4), |
b7ee49db | 102 | INTEL_E1000_ETHERNET_DEVICE(0x10B5), |
6418ecc6 | 103 | INTEL_E1000_ETHERNET_DEVICE(0x10B9), |
ae2c3860 AK |
104 | INTEL_E1000_ETHERNET_DEVICE(0x10BA), |
105 | INTEL_E1000_ETHERNET_DEVICE(0x10BB), | |
1da177e4 LT |
106 | /* required last entry */ |
107 | {0,} | |
108 | }; | |
109 | ||
110 | MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); | |
111 | ||
35574764 NN |
112 | int e1000_up(struct e1000_adapter *adapter); |
113 | void e1000_down(struct e1000_adapter *adapter); | |
114 | void e1000_reinit_locked(struct e1000_adapter *adapter); | |
115 | void e1000_reset(struct e1000_adapter *adapter); | |
116 | int e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx); | |
117 | int e1000_setup_all_tx_resources(struct e1000_adapter *adapter); | |
118 | int e1000_setup_all_rx_resources(struct e1000_adapter *adapter); | |
119 | void e1000_free_all_tx_resources(struct e1000_adapter *adapter); | |
120 | void e1000_free_all_rx_resources(struct e1000_adapter *adapter); | |
3ad2cc67 | 121 | static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
35574764 | 122 | struct e1000_tx_ring *txdr); |
3ad2cc67 | 123 | static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
35574764 | 124 | struct e1000_rx_ring *rxdr); |
3ad2cc67 | 125 | static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
35574764 | 126 | struct e1000_tx_ring *tx_ring); |
3ad2cc67 | 127 | static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
35574764 NN |
128 | struct e1000_rx_ring *rx_ring); |
129 | void e1000_update_stats(struct e1000_adapter *adapter); | |
1da177e4 LT |
130 | |
131 | static int e1000_init_module(void); | |
132 | static void e1000_exit_module(void); | |
133 | static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent); | |
134 | static void __devexit e1000_remove(struct pci_dev *pdev); | |
581d708e | 135 | static int e1000_alloc_queues(struct e1000_adapter *adapter); |
1da177e4 LT |
136 | static int e1000_sw_init(struct e1000_adapter *adapter); |
137 | static int e1000_open(struct net_device *netdev); | |
138 | static int e1000_close(struct net_device *netdev); | |
139 | static void e1000_configure_tx(struct e1000_adapter *adapter); | |
140 | static void e1000_configure_rx(struct e1000_adapter *adapter); | |
141 | static void e1000_setup_rctl(struct e1000_adapter *adapter); | |
581d708e MC |
142 | static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter); |
143 | static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter); | |
144 | static void e1000_clean_tx_ring(struct e1000_adapter *adapter, | |
145 | struct e1000_tx_ring *tx_ring); | |
146 | static void e1000_clean_rx_ring(struct e1000_adapter *adapter, | |
147 | struct e1000_rx_ring *rx_ring); | |
1da177e4 LT |
148 | static void e1000_set_multi(struct net_device *netdev); |
149 | static void e1000_update_phy_info(unsigned long data); | |
150 | static void e1000_watchdog(unsigned long data); | |
1da177e4 LT |
151 | static void e1000_82547_tx_fifo_stall(unsigned long data); |
152 | static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev); | |
153 | static struct net_device_stats * e1000_get_stats(struct net_device *netdev); | |
154 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu); | |
155 | static int e1000_set_mac(struct net_device *netdev, void *p); | |
7d12e780 | 156 | static irqreturn_t e1000_intr(int irq, void *data); |
581d708e MC |
157 | static boolean_t e1000_clean_tx_irq(struct e1000_adapter *adapter, |
158 | struct e1000_tx_ring *tx_ring); | |
1da177e4 | 159 | #ifdef CONFIG_E1000_NAPI |
581d708e | 160 | static int e1000_clean(struct net_device *poll_dev, int *budget); |
1da177e4 | 161 | static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter, |
581d708e | 162 | struct e1000_rx_ring *rx_ring, |
1da177e4 | 163 | int *work_done, int work_to_do); |
2d7edb92 | 164 | static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
581d708e | 165 | struct e1000_rx_ring *rx_ring, |
2d7edb92 | 166 | int *work_done, int work_to_do); |
1da177e4 | 167 | #else |
581d708e MC |
168 | static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter, |
169 | struct e1000_rx_ring *rx_ring); | |
170 | static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, | |
171 | struct e1000_rx_ring *rx_ring); | |
1da177e4 | 172 | #endif |
581d708e | 173 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
72d64a43 JK |
174 | struct e1000_rx_ring *rx_ring, |
175 | int cleaned_count); | |
581d708e | 176 | static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, |
72d64a43 JK |
177 | struct e1000_rx_ring *rx_ring, |
178 | int cleaned_count); | |
1da177e4 LT |
179 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); |
180 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
181 | int cmd); | |
35574764 | 182 | void e1000_set_ethtool_ops(struct net_device *netdev); |
1da177e4 LT |
183 | static void e1000_enter_82542_rst(struct e1000_adapter *adapter); |
184 | static void e1000_leave_82542_rst(struct e1000_adapter *adapter); | |
185 | static void e1000_tx_timeout(struct net_device *dev); | |
87041639 | 186 | static void e1000_reset_task(struct net_device *dev); |
1da177e4 | 187 | static void e1000_smartspeed(struct e1000_adapter *adapter); |
e619d523 AK |
188 | static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
189 | struct sk_buff *skb); | |
1da177e4 LT |
190 | |
191 | static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp); | |
192 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid); | |
193 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid); | |
194 | static void e1000_restore_vlan(struct e1000_adapter *adapter); | |
195 | ||
977e74b5 | 196 | static int e1000_suspend(struct pci_dev *pdev, pm_message_t state); |
6fdfef16 | 197 | #ifdef CONFIG_PM |
1da177e4 LT |
198 | static int e1000_resume(struct pci_dev *pdev); |
199 | #endif | |
c653e635 | 200 | static void e1000_shutdown(struct pci_dev *pdev); |
1da177e4 LT |
201 | |
202 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
203 | /* for netdump / net console */ | |
204 | static void e1000_netpoll (struct net_device *netdev); | |
205 | #endif | |
206 | ||
35574764 NN |
207 | extern void e1000_check_options(struct e1000_adapter *adapter); |
208 | ||
9026729b AK |
209 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
210 | pci_channel_state_t state); | |
211 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev); | |
212 | static void e1000_io_resume(struct pci_dev *pdev); | |
213 | ||
214 | static struct pci_error_handlers e1000_err_handler = { | |
215 | .error_detected = e1000_io_error_detected, | |
216 | .slot_reset = e1000_io_slot_reset, | |
217 | .resume = e1000_io_resume, | |
218 | }; | |
24025e4e | 219 | |
1da177e4 LT |
220 | static struct pci_driver e1000_driver = { |
221 | .name = e1000_driver_name, | |
222 | .id_table = e1000_pci_tbl, | |
223 | .probe = e1000_probe, | |
224 | .remove = __devexit_p(e1000_remove), | |
c4e24f01 | 225 | #ifdef CONFIG_PM |
1da177e4 | 226 | /* Power Managment Hooks */ |
1da177e4 | 227 | .suspend = e1000_suspend, |
c653e635 | 228 | .resume = e1000_resume, |
1da177e4 | 229 | #endif |
9026729b AK |
230 | .shutdown = e1000_shutdown, |
231 | .err_handler = &e1000_err_handler | |
1da177e4 LT |
232 | }; |
233 | ||
234 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
235 | MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); | |
236 | MODULE_LICENSE("GPL"); | |
237 | MODULE_VERSION(DRV_VERSION); | |
238 | ||
239 | static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; | |
240 | module_param(debug, int, 0); | |
241 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
242 | ||
243 | /** | |
244 | * e1000_init_module - Driver Registration Routine | |
245 | * | |
246 | * e1000_init_module is the first routine called when the driver is | |
247 | * loaded. All it does is register with the PCI subsystem. | |
248 | **/ | |
249 | ||
250 | static int __init | |
251 | e1000_init_module(void) | |
252 | { | |
253 | int ret; | |
254 | printk(KERN_INFO "%s - version %s\n", | |
255 | e1000_driver_string, e1000_driver_version); | |
256 | ||
257 | printk(KERN_INFO "%s\n", e1000_copyright); | |
258 | ||
29917620 | 259 | ret = pci_register_driver(&e1000_driver); |
8b378def | 260 | |
1da177e4 LT |
261 | return ret; |
262 | } | |
263 | ||
264 | module_init(e1000_init_module); | |
265 | ||
266 | /** | |
267 | * e1000_exit_module - Driver Exit Cleanup Routine | |
268 | * | |
269 | * e1000_exit_module is called just before the driver is removed | |
270 | * from memory. | |
271 | **/ | |
272 | ||
273 | static void __exit | |
274 | e1000_exit_module(void) | |
275 | { | |
1da177e4 LT |
276 | pci_unregister_driver(&e1000_driver); |
277 | } | |
278 | ||
279 | module_exit(e1000_exit_module); | |
280 | ||
2db10a08 AK |
281 | static int e1000_request_irq(struct e1000_adapter *adapter) |
282 | { | |
283 | struct net_device *netdev = adapter->netdev; | |
284 | int flags, err = 0; | |
285 | ||
c0bc8721 | 286 | flags = IRQF_SHARED; |
2db10a08 AK |
287 | #ifdef CONFIG_PCI_MSI |
288 | if (adapter->hw.mac_type > e1000_82547_rev_2) { | |
289 | adapter->have_msi = TRUE; | |
290 | if ((err = pci_enable_msi(adapter->pdev))) { | |
291 | DPRINTK(PROBE, ERR, | |
292 | "Unable to allocate MSI interrupt Error: %d\n", err); | |
293 | adapter->have_msi = FALSE; | |
294 | } | |
295 | } | |
296 | if (adapter->have_msi) | |
61ef5c00 | 297 | flags &= ~IRQF_SHARED; |
2db10a08 AK |
298 | #endif |
299 | if ((err = request_irq(adapter->pdev->irq, &e1000_intr, flags, | |
300 | netdev->name, netdev))) | |
301 | DPRINTK(PROBE, ERR, | |
302 | "Unable to allocate interrupt Error: %d\n", err); | |
303 | ||
304 | return err; | |
305 | } | |
306 | ||
307 | static void e1000_free_irq(struct e1000_adapter *adapter) | |
308 | { | |
309 | struct net_device *netdev = adapter->netdev; | |
310 | ||
311 | free_irq(adapter->pdev->irq, netdev); | |
312 | ||
313 | #ifdef CONFIG_PCI_MSI | |
314 | if (adapter->have_msi) | |
315 | pci_disable_msi(adapter->pdev); | |
316 | #endif | |
317 | } | |
318 | ||
1da177e4 LT |
319 | /** |
320 | * e1000_irq_disable - Mask off interrupt generation on the NIC | |
321 | * @adapter: board private structure | |
322 | **/ | |
323 | ||
e619d523 | 324 | static void |
1da177e4 LT |
325 | e1000_irq_disable(struct e1000_adapter *adapter) |
326 | { | |
327 | atomic_inc(&adapter->irq_sem); | |
328 | E1000_WRITE_REG(&adapter->hw, IMC, ~0); | |
329 | E1000_WRITE_FLUSH(&adapter->hw); | |
330 | synchronize_irq(adapter->pdev->irq); | |
331 | } | |
332 | ||
333 | /** | |
334 | * e1000_irq_enable - Enable default interrupt generation settings | |
335 | * @adapter: board private structure | |
336 | **/ | |
337 | ||
e619d523 | 338 | static void |
1da177e4 LT |
339 | e1000_irq_enable(struct e1000_adapter *adapter) |
340 | { | |
96838a40 | 341 | if (likely(atomic_dec_and_test(&adapter->irq_sem))) { |
1da177e4 LT |
342 | E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK); |
343 | E1000_WRITE_FLUSH(&adapter->hw); | |
344 | } | |
345 | } | |
3ad2cc67 AB |
346 | |
347 | static void | |
2d7edb92 MC |
348 | e1000_update_mng_vlan(struct e1000_adapter *adapter) |
349 | { | |
350 | struct net_device *netdev = adapter->netdev; | |
351 | uint16_t vid = adapter->hw.mng_cookie.vlan_id; | |
352 | uint16_t old_vid = adapter->mng_vlan_id; | |
96838a40 JB |
353 | if (adapter->vlgrp) { |
354 | if (!adapter->vlgrp->vlan_devices[vid]) { | |
355 | if (adapter->hw.mng_cookie.status & | |
2d7edb92 MC |
356 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) { |
357 | e1000_vlan_rx_add_vid(netdev, vid); | |
358 | adapter->mng_vlan_id = vid; | |
359 | } else | |
360 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
96838a40 JB |
361 | |
362 | if ((old_vid != (uint16_t)E1000_MNG_VLAN_NONE) && | |
363 | (vid != old_vid) && | |
2d7edb92 MC |
364 | !adapter->vlgrp->vlan_devices[old_vid]) |
365 | e1000_vlan_rx_kill_vid(netdev, old_vid); | |
c5f226fe JK |
366 | } else |
367 | adapter->mng_vlan_id = vid; | |
2d7edb92 MC |
368 | } |
369 | } | |
b55ccb35 JK |
370 | |
371 | /** | |
372 | * e1000_release_hw_control - release control of the h/w to f/w | |
373 | * @adapter: address of board private structure | |
374 | * | |
375 | * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit. | |
376 | * For ASF and Pass Through versions of f/w this means that the | |
377 | * driver is no longer loaded. For AMT version (only with 82573) i | |
90fb5135 | 378 | * of the f/w this means that the network i/f is closed. |
76c224bc | 379 | * |
b55ccb35 JK |
380 | **/ |
381 | ||
e619d523 | 382 | static void |
b55ccb35 JK |
383 | e1000_release_hw_control(struct e1000_adapter *adapter) |
384 | { | |
385 | uint32_t ctrl_ext; | |
386 | uint32_t swsm; | |
cd94dd0b | 387 | uint32_t extcnf; |
b55ccb35 JK |
388 | |
389 | /* Let firmware taken over control of h/w */ | |
390 | switch (adapter->hw.mac_type) { | |
391 | case e1000_82571: | |
392 | case e1000_82572: | |
4cc15f54 | 393 | case e1000_80003es2lan: |
b55ccb35 JK |
394 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); |
395 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, | |
396 | ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); | |
397 | break; | |
398 | case e1000_82573: | |
399 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
400 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
401 | swsm & ~E1000_SWSM_DRV_LOAD); | |
cd94dd0b AK |
402 | case e1000_ich8lan: |
403 | extcnf = E1000_READ_REG(&adapter->hw, CTRL_EXT); | |
404 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, | |
405 | extcnf & ~E1000_CTRL_EXT_DRV_LOAD); | |
406 | break; | |
b55ccb35 JK |
407 | default: |
408 | break; | |
409 | } | |
410 | } | |
411 | ||
412 | /** | |
413 | * e1000_get_hw_control - get control of the h/w from f/w | |
414 | * @adapter: address of board private structure | |
415 | * | |
416 | * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit. | |
76c224bc AK |
417 | * For ASF and Pass Through versions of f/w this means that |
418 | * the driver is loaded. For AMT version (only with 82573) | |
90fb5135 | 419 | * of the f/w this means that the network i/f is open. |
76c224bc | 420 | * |
b55ccb35 JK |
421 | **/ |
422 | ||
e619d523 | 423 | static void |
b55ccb35 JK |
424 | e1000_get_hw_control(struct e1000_adapter *adapter) |
425 | { | |
426 | uint32_t ctrl_ext; | |
427 | uint32_t swsm; | |
cd94dd0b | 428 | uint32_t extcnf; |
90fb5135 | 429 | |
b55ccb35 JK |
430 | /* Let firmware know the driver has taken over */ |
431 | switch (adapter->hw.mac_type) { | |
432 | case e1000_82571: | |
433 | case e1000_82572: | |
4cc15f54 | 434 | case e1000_80003es2lan: |
b55ccb35 JK |
435 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); |
436 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, | |
437 | ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); | |
438 | break; | |
439 | case e1000_82573: | |
440 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
441 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
442 | swsm | E1000_SWSM_DRV_LOAD); | |
443 | break; | |
cd94dd0b AK |
444 | case e1000_ich8lan: |
445 | extcnf = E1000_READ_REG(&adapter->hw, EXTCNF_CTRL); | |
446 | E1000_WRITE_REG(&adapter->hw, EXTCNF_CTRL, | |
447 | extcnf | E1000_EXTCNF_CTRL_SWFLAG); | |
448 | break; | |
b55ccb35 JK |
449 | default: |
450 | break; | |
451 | } | |
452 | } | |
453 | ||
1da177e4 LT |
454 | int |
455 | e1000_up(struct e1000_adapter *adapter) | |
456 | { | |
457 | struct net_device *netdev = adapter->netdev; | |
2db10a08 | 458 | int i; |
1da177e4 LT |
459 | |
460 | /* hardware has been reset, we need to reload some things */ | |
461 | ||
1da177e4 LT |
462 | e1000_set_multi(netdev); |
463 | ||
464 | e1000_restore_vlan(adapter); | |
465 | ||
466 | e1000_configure_tx(adapter); | |
467 | e1000_setup_rctl(adapter); | |
468 | e1000_configure_rx(adapter); | |
72d64a43 JK |
469 | /* call E1000_DESC_UNUSED which always leaves |
470 | * at least 1 descriptor unused to make sure | |
471 | * next_to_use != next_to_clean */ | |
f56799ea | 472 | for (i = 0; i < adapter->num_rx_queues; i++) { |
72d64a43 | 473 | struct e1000_rx_ring *ring = &adapter->rx_ring[i]; |
a292ca6e JK |
474 | adapter->alloc_rx_buf(adapter, ring, |
475 | E1000_DESC_UNUSED(ring)); | |
f56799ea | 476 | } |
1da177e4 | 477 | |
7bfa4816 JK |
478 | adapter->tx_queue_len = netdev->tx_queue_len; |
479 | ||
1da177e4 LT |
480 | #ifdef CONFIG_E1000_NAPI |
481 | netif_poll_enable(netdev); | |
482 | #endif | |
5de55624 MC |
483 | e1000_irq_enable(adapter); |
484 | ||
1314bbf3 AK |
485 | clear_bit(__E1000_DOWN, &adapter->flags); |
486 | ||
487 | mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ); | |
1da177e4 LT |
488 | return 0; |
489 | } | |
490 | ||
79f05bf0 AK |
491 | /** |
492 | * e1000_power_up_phy - restore link in case the phy was powered down | |
493 | * @adapter: address of board private structure | |
494 | * | |
495 | * The phy may be powered down to save power and turn off link when the | |
496 | * driver is unloaded and wake on lan is not enabled (among others) | |
497 | * *** this routine MUST be followed by a call to e1000_reset *** | |
498 | * | |
499 | **/ | |
500 | ||
d658266e | 501 | void e1000_power_up_phy(struct e1000_adapter *adapter) |
79f05bf0 AK |
502 | { |
503 | uint16_t mii_reg = 0; | |
504 | ||
505 | /* Just clear the power down bit to wake the phy back up */ | |
506 | if (adapter->hw.media_type == e1000_media_type_copper) { | |
507 | /* according to the manual, the phy will retain its | |
508 | * settings across a power-down/up cycle */ | |
509 | e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); | |
510 | mii_reg &= ~MII_CR_POWER_DOWN; | |
511 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg); | |
512 | } | |
513 | } | |
514 | ||
515 | static void e1000_power_down_phy(struct e1000_adapter *adapter) | |
516 | { | |
61c2505f BA |
517 | /* Power down the PHY so no link is implied when interface is down * |
518 | * The PHY cannot be powered down if any of the following is TRUE * | |
79f05bf0 AK |
519 | * (a) WoL is enabled |
520 | * (b) AMT is active | |
521 | * (c) SoL/IDER session is active */ | |
522 | if (!adapter->wol && adapter->hw.mac_type >= e1000_82540 && | |
61c2505f | 523 | adapter->hw.media_type == e1000_media_type_copper) { |
79f05bf0 | 524 | uint16_t mii_reg = 0; |
61c2505f BA |
525 | |
526 | switch (adapter->hw.mac_type) { | |
527 | case e1000_82540: | |
528 | case e1000_82545: | |
529 | case e1000_82545_rev_3: | |
530 | case e1000_82546: | |
531 | case e1000_82546_rev_3: | |
532 | case e1000_82541: | |
533 | case e1000_82541_rev_2: | |
534 | case e1000_82547: | |
535 | case e1000_82547_rev_2: | |
536 | if (E1000_READ_REG(&adapter->hw, MANC) & | |
537 | E1000_MANC_SMBUS_EN) | |
538 | goto out; | |
539 | break; | |
540 | case e1000_82571: | |
541 | case e1000_82572: | |
542 | case e1000_82573: | |
543 | case e1000_80003es2lan: | |
544 | case e1000_ich8lan: | |
545 | if (e1000_check_mng_mode(&adapter->hw) || | |
546 | e1000_check_phy_reset_block(&adapter->hw)) | |
547 | goto out; | |
548 | break; | |
549 | default: | |
550 | goto out; | |
551 | } | |
79f05bf0 AK |
552 | e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); |
553 | mii_reg |= MII_CR_POWER_DOWN; | |
554 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg); | |
555 | mdelay(1); | |
556 | } | |
61c2505f BA |
557 | out: |
558 | return; | |
79f05bf0 AK |
559 | } |
560 | ||
1da177e4 LT |
561 | void |
562 | e1000_down(struct e1000_adapter *adapter) | |
563 | { | |
564 | struct net_device *netdev = adapter->netdev; | |
565 | ||
1314bbf3 AK |
566 | /* signal that we're down so the interrupt handler does not |
567 | * reschedule our watchdog timer */ | |
568 | set_bit(__E1000_DOWN, &adapter->flags); | |
569 | ||
1da177e4 | 570 | e1000_irq_disable(adapter); |
c1605eb3 | 571 | |
1da177e4 LT |
572 | del_timer_sync(&adapter->tx_fifo_stall_timer); |
573 | del_timer_sync(&adapter->watchdog_timer); | |
574 | del_timer_sync(&adapter->phy_info_timer); | |
575 | ||
576 | #ifdef CONFIG_E1000_NAPI | |
577 | netif_poll_disable(netdev); | |
578 | #endif | |
7bfa4816 | 579 | netdev->tx_queue_len = adapter->tx_queue_len; |
1da177e4 LT |
580 | adapter->link_speed = 0; |
581 | adapter->link_duplex = 0; | |
582 | netif_carrier_off(netdev); | |
583 | netif_stop_queue(netdev); | |
584 | ||
585 | e1000_reset(adapter); | |
581d708e MC |
586 | e1000_clean_all_tx_rings(adapter); |
587 | e1000_clean_all_rx_rings(adapter); | |
1da177e4 | 588 | } |
1da177e4 | 589 | |
2db10a08 AK |
590 | void |
591 | e1000_reinit_locked(struct e1000_adapter *adapter) | |
592 | { | |
593 | WARN_ON(in_interrupt()); | |
594 | while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) | |
595 | msleep(1); | |
596 | e1000_down(adapter); | |
597 | e1000_up(adapter); | |
598 | clear_bit(__E1000_RESETTING, &adapter->flags); | |
1da177e4 LT |
599 | } |
600 | ||
601 | void | |
602 | e1000_reset(struct e1000_adapter *adapter) | |
603 | { | |
2d7edb92 | 604 | uint32_t pba, manc; |
1125ecbc | 605 | uint16_t fc_high_water_mark = E1000_FC_HIGH_DIFF; |
1da177e4 LT |
606 | |
607 | /* Repartition Pba for greater than 9k mtu | |
608 | * To take effect CTRL.RST is required. | |
609 | */ | |
610 | ||
2d7edb92 MC |
611 | switch (adapter->hw.mac_type) { |
612 | case e1000_82547: | |
0e6ef3e0 | 613 | case e1000_82547_rev_2: |
2d7edb92 MC |
614 | pba = E1000_PBA_30K; |
615 | break; | |
868d5309 MC |
616 | case e1000_82571: |
617 | case e1000_82572: | |
6418ecc6 | 618 | case e1000_80003es2lan: |
868d5309 MC |
619 | pba = E1000_PBA_38K; |
620 | break; | |
2d7edb92 MC |
621 | case e1000_82573: |
622 | pba = E1000_PBA_12K; | |
623 | break; | |
cd94dd0b AK |
624 | case e1000_ich8lan: |
625 | pba = E1000_PBA_8K; | |
626 | break; | |
2d7edb92 MC |
627 | default: |
628 | pba = E1000_PBA_48K; | |
629 | break; | |
630 | } | |
631 | ||
96838a40 | 632 | if ((adapter->hw.mac_type != e1000_82573) && |
f11b7f85 | 633 | (adapter->netdev->mtu > E1000_RXBUFFER_8192)) |
1125ecbc | 634 | pba -= 8; /* allocate more FIFO for Tx */ |
2d7edb92 MC |
635 | |
636 | ||
96838a40 | 637 | if (adapter->hw.mac_type == e1000_82547) { |
1da177e4 LT |
638 | adapter->tx_fifo_head = 0; |
639 | adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; | |
640 | adapter->tx_fifo_size = | |
641 | (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; | |
642 | atomic_set(&adapter->tx_fifo_stall, 0); | |
643 | } | |
2d7edb92 | 644 | |
1da177e4 LT |
645 | E1000_WRITE_REG(&adapter->hw, PBA, pba); |
646 | ||
647 | /* flow control settings */ | |
f11b7f85 JK |
648 | /* Set the FC high water mark to 90% of the FIFO size. |
649 | * Required to clear last 3 LSB */ | |
650 | fc_high_water_mark = ((pba * 9216)/10) & 0xFFF8; | |
cd94dd0b AK |
651 | /* We can't use 90% on small FIFOs because the remainder |
652 | * would be less than 1 full frame. In this case, we size | |
653 | * it to allow at least a full frame above the high water | |
654 | * mark. */ | |
655 | if (pba < E1000_PBA_16K) | |
656 | fc_high_water_mark = (pba * 1024) - 1600; | |
f11b7f85 JK |
657 | |
658 | adapter->hw.fc_high_water = fc_high_water_mark; | |
659 | adapter->hw.fc_low_water = fc_high_water_mark - 8; | |
87041639 JK |
660 | if (adapter->hw.mac_type == e1000_80003es2lan) |
661 | adapter->hw.fc_pause_time = 0xFFFF; | |
662 | else | |
663 | adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME; | |
1da177e4 LT |
664 | adapter->hw.fc_send_xon = 1; |
665 | adapter->hw.fc = adapter->hw.original_fc; | |
666 | ||
2d7edb92 | 667 | /* Allow time for pending master requests to run */ |
1da177e4 | 668 | e1000_reset_hw(&adapter->hw); |
96838a40 | 669 | if (adapter->hw.mac_type >= e1000_82544) |
1da177e4 | 670 | E1000_WRITE_REG(&adapter->hw, WUC, 0); |
09ae3e88 | 671 | |
96838a40 | 672 | if (e1000_init_hw(&adapter->hw)) |
1da177e4 | 673 | DPRINTK(PROBE, ERR, "Hardware Error\n"); |
2d7edb92 | 674 | e1000_update_mng_vlan(adapter); |
1da177e4 LT |
675 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
676 | E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE); | |
677 | ||
678 | e1000_reset_adaptive(&adapter->hw); | |
679 | e1000_phy_get_info(&adapter->hw, &adapter->phy_info); | |
9a53a202 AK |
680 | |
681 | if (!adapter->smart_power_down && | |
682 | (adapter->hw.mac_type == e1000_82571 || | |
683 | adapter->hw.mac_type == e1000_82572)) { | |
684 | uint16_t phy_data = 0; | |
685 | /* speed up time to link by disabling smart power down, ignore | |
686 | * the return value of this function because there is nothing | |
687 | * different we would do if it failed */ | |
688 | e1000_read_phy_reg(&adapter->hw, IGP02E1000_PHY_POWER_MGMT, | |
689 | &phy_data); | |
690 | phy_data &= ~IGP02E1000_PM_SPD; | |
691 | e1000_write_phy_reg(&adapter->hw, IGP02E1000_PHY_POWER_MGMT, | |
692 | phy_data); | |
693 | } | |
694 | ||
4ccc12ae JB |
695 | if ((adapter->en_mng_pt) && |
696 | (adapter->hw.mac_type >= e1000_82540) && | |
697 | (adapter->hw.mac_type < e1000_82571) && | |
698 | (adapter->hw.media_type == e1000_media_type_copper)) { | |
2d7edb92 MC |
699 | manc = E1000_READ_REG(&adapter->hw, MANC); |
700 | manc |= (E1000_MANC_ARP_EN | E1000_MANC_EN_MNG2HOST); | |
701 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
702 | } | |
1da177e4 LT |
703 | } |
704 | ||
705 | /** | |
706 | * e1000_probe - Device Initialization Routine | |
707 | * @pdev: PCI device information struct | |
708 | * @ent: entry in e1000_pci_tbl | |
709 | * | |
710 | * Returns 0 on success, negative on failure | |
711 | * | |
712 | * e1000_probe initializes an adapter identified by a pci_dev structure. | |
713 | * The OS initialization, configuring of the adapter private structure, | |
714 | * and a hardware reset occur. | |
715 | **/ | |
716 | ||
717 | static int __devinit | |
718 | e1000_probe(struct pci_dev *pdev, | |
719 | const struct pci_device_id *ent) | |
720 | { | |
721 | struct net_device *netdev; | |
722 | struct e1000_adapter *adapter; | |
2d7edb92 | 723 | unsigned long mmio_start, mmio_len; |
cd94dd0b | 724 | unsigned long flash_start, flash_len; |
2d7edb92 | 725 | |
1da177e4 | 726 | static int cards_found = 0; |
120cd576 | 727 | static int global_quad_port_a = 0; /* global ksp3 port a indication */ |
2d7edb92 | 728 | int i, err, pci_using_dac; |
120cd576 | 729 | uint16_t eeprom_data = 0; |
1da177e4 | 730 | uint16_t eeprom_apme_mask = E1000_EEPROM_APME; |
96838a40 | 731 | if ((err = pci_enable_device(pdev))) |
1da177e4 LT |
732 | return err; |
733 | ||
cd94dd0b AK |
734 | if (!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK)) && |
735 | !(err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))) { | |
1da177e4 LT |
736 | pci_using_dac = 1; |
737 | } else { | |
cd94dd0b AK |
738 | if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) && |
739 | (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) { | |
1da177e4 | 740 | E1000_ERR("No usable DMA configuration, aborting\n"); |
6dd62ab0 | 741 | goto err_dma; |
1da177e4 LT |
742 | } |
743 | pci_using_dac = 0; | |
744 | } | |
745 | ||
96838a40 | 746 | if ((err = pci_request_regions(pdev, e1000_driver_name))) |
6dd62ab0 | 747 | goto err_pci_reg; |
1da177e4 LT |
748 | |
749 | pci_set_master(pdev); | |
750 | ||
6dd62ab0 | 751 | err = -ENOMEM; |
1da177e4 | 752 | netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
6dd62ab0 | 753 | if (!netdev) |
1da177e4 | 754 | goto err_alloc_etherdev; |
1da177e4 LT |
755 | |
756 | SET_MODULE_OWNER(netdev); | |
757 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
758 | ||
759 | pci_set_drvdata(pdev, netdev); | |
60490fe0 | 760 | adapter = netdev_priv(netdev); |
1da177e4 LT |
761 | adapter->netdev = netdev; |
762 | adapter->pdev = pdev; | |
763 | adapter->hw.back = adapter; | |
764 | adapter->msg_enable = (1 << debug) - 1; | |
765 | ||
766 | mmio_start = pci_resource_start(pdev, BAR_0); | |
767 | mmio_len = pci_resource_len(pdev, BAR_0); | |
768 | ||
6dd62ab0 | 769 | err = -EIO; |
1da177e4 | 770 | adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); |
6dd62ab0 | 771 | if (!adapter->hw.hw_addr) |
1da177e4 | 772 | goto err_ioremap; |
1da177e4 | 773 | |
96838a40 JB |
774 | for (i = BAR_1; i <= BAR_5; i++) { |
775 | if (pci_resource_len(pdev, i) == 0) | |
1da177e4 | 776 | continue; |
96838a40 | 777 | if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { |
1da177e4 LT |
778 | adapter->hw.io_base = pci_resource_start(pdev, i); |
779 | break; | |
780 | } | |
781 | } | |
782 | ||
783 | netdev->open = &e1000_open; | |
784 | netdev->stop = &e1000_close; | |
785 | netdev->hard_start_xmit = &e1000_xmit_frame; | |
786 | netdev->get_stats = &e1000_get_stats; | |
787 | netdev->set_multicast_list = &e1000_set_multi; | |
788 | netdev->set_mac_address = &e1000_set_mac; | |
789 | netdev->change_mtu = &e1000_change_mtu; | |
790 | netdev->do_ioctl = &e1000_ioctl; | |
791 | e1000_set_ethtool_ops(netdev); | |
792 | netdev->tx_timeout = &e1000_tx_timeout; | |
793 | netdev->watchdog_timeo = 5 * HZ; | |
794 | #ifdef CONFIG_E1000_NAPI | |
795 | netdev->poll = &e1000_clean; | |
796 | netdev->weight = 64; | |
797 | #endif | |
798 | netdev->vlan_rx_register = e1000_vlan_rx_register; | |
799 | netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid; | |
800 | netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid; | |
801 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
802 | netdev->poll_controller = e1000_netpoll; | |
803 | #endif | |
0eb5a34c | 804 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
1da177e4 LT |
805 | |
806 | netdev->mem_start = mmio_start; | |
807 | netdev->mem_end = mmio_start + mmio_len; | |
808 | netdev->base_addr = adapter->hw.io_base; | |
809 | ||
810 | adapter->bd_number = cards_found; | |
811 | ||
812 | /* setup the private structure */ | |
813 | ||
96838a40 | 814 | if ((err = e1000_sw_init(adapter))) |
1da177e4 LT |
815 | goto err_sw_init; |
816 | ||
6dd62ab0 | 817 | err = -EIO; |
cd94dd0b AK |
818 | /* Flash BAR mapping must happen after e1000_sw_init |
819 | * because it depends on mac_type */ | |
820 | if ((adapter->hw.mac_type == e1000_ich8lan) && | |
821 | (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) { | |
822 | flash_start = pci_resource_start(pdev, 1); | |
823 | flash_len = pci_resource_len(pdev, 1); | |
824 | adapter->hw.flash_address = ioremap(flash_start, flash_len); | |
6dd62ab0 | 825 | if (!adapter->hw.flash_address) |
cd94dd0b | 826 | goto err_flashmap; |
cd94dd0b AK |
827 | } |
828 | ||
6dd62ab0 | 829 | if (e1000_check_phy_reset_block(&adapter->hw)) |
2d7edb92 MC |
830 | DPRINTK(PROBE, INFO, "PHY reset is blocked due to SOL/IDER session.\n"); |
831 | ||
96838a40 | 832 | if (adapter->hw.mac_type >= e1000_82543) { |
1da177e4 LT |
833 | netdev->features = NETIF_F_SG | |
834 | NETIF_F_HW_CSUM | | |
835 | NETIF_F_HW_VLAN_TX | | |
836 | NETIF_F_HW_VLAN_RX | | |
837 | NETIF_F_HW_VLAN_FILTER; | |
cd94dd0b AK |
838 | if (adapter->hw.mac_type == e1000_ich8lan) |
839 | netdev->features &= ~NETIF_F_HW_VLAN_FILTER; | |
1da177e4 LT |
840 | } |
841 | ||
842 | #ifdef NETIF_F_TSO | |
96838a40 | 843 | if ((adapter->hw.mac_type >= e1000_82544) && |
1da177e4 LT |
844 | (adapter->hw.mac_type != e1000_82547)) |
845 | netdev->features |= NETIF_F_TSO; | |
2d7edb92 | 846 | |
87ca4e5b | 847 | #ifdef NETIF_F_TSO6 |
96838a40 | 848 | if (adapter->hw.mac_type > e1000_82547_rev_2) |
87ca4e5b | 849 | netdev->features |= NETIF_F_TSO6; |
2d7edb92 | 850 | #endif |
1da177e4 | 851 | #endif |
96838a40 | 852 | if (pci_using_dac) |
1da177e4 LT |
853 | netdev->features |= NETIF_F_HIGHDMA; |
854 | ||
76c224bc AK |
855 | netdev->features |= NETIF_F_LLTX; |
856 | ||
2d7edb92 MC |
857 | adapter->en_mng_pt = e1000_enable_mng_pass_thru(&adapter->hw); |
858 | ||
cd94dd0b AK |
859 | /* initialize eeprom parameters */ |
860 | ||
861 | if (e1000_init_eeprom_params(&adapter->hw)) { | |
862 | E1000_ERR("EEPROM initialization failed\n"); | |
6dd62ab0 | 863 | goto err_eeprom; |
cd94dd0b AK |
864 | } |
865 | ||
96838a40 | 866 | /* before reading the EEPROM, reset the controller to |
1da177e4 | 867 | * put the device in a known good starting state */ |
96838a40 | 868 | |
1da177e4 LT |
869 | e1000_reset_hw(&adapter->hw); |
870 | ||
871 | /* make sure the EEPROM is good */ | |
872 | ||
96838a40 | 873 | if (e1000_validate_eeprom_checksum(&adapter->hw) < 0) { |
1da177e4 | 874 | DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n"); |
1da177e4 LT |
875 | goto err_eeprom; |
876 | } | |
877 | ||
878 | /* copy the MAC address out of the EEPROM */ | |
879 | ||
96838a40 | 880 | if (e1000_read_mac_addr(&adapter->hw)) |
1da177e4 LT |
881 | DPRINTK(PROBE, ERR, "EEPROM Read Error\n"); |
882 | memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); | |
9beb0ac1 | 883 | memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len); |
1da177e4 | 884 | |
96838a40 | 885 | if (!is_valid_ether_addr(netdev->perm_addr)) { |
1da177e4 | 886 | DPRINTK(PROBE, ERR, "Invalid MAC Address\n"); |
1da177e4 LT |
887 | goto err_eeprom; |
888 | } | |
889 | ||
1da177e4 LT |
890 | e1000_get_bus_info(&adapter->hw); |
891 | ||
892 | init_timer(&adapter->tx_fifo_stall_timer); | |
893 | adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall; | |
894 | adapter->tx_fifo_stall_timer.data = (unsigned long) adapter; | |
895 | ||
896 | init_timer(&adapter->watchdog_timer); | |
897 | adapter->watchdog_timer.function = &e1000_watchdog; | |
898 | adapter->watchdog_timer.data = (unsigned long) adapter; | |
899 | ||
1da177e4 LT |
900 | init_timer(&adapter->phy_info_timer); |
901 | adapter->phy_info_timer.function = &e1000_update_phy_info; | |
902 | adapter->phy_info_timer.data = (unsigned long) adapter; | |
903 | ||
87041639 JK |
904 | INIT_WORK(&adapter->reset_task, |
905 | (void (*)(void *))e1000_reset_task, netdev); | |
1da177e4 | 906 | |
1da177e4 LT |
907 | e1000_check_options(adapter); |
908 | ||
909 | /* Initial Wake on LAN setting | |
910 | * If APM wake is enabled in the EEPROM, | |
911 | * enable the ACPI Magic Packet filter | |
912 | */ | |
913 | ||
96838a40 | 914 | switch (adapter->hw.mac_type) { |
1da177e4 LT |
915 | case e1000_82542_rev2_0: |
916 | case e1000_82542_rev2_1: | |
917 | case e1000_82543: | |
918 | break; | |
919 | case e1000_82544: | |
920 | e1000_read_eeprom(&adapter->hw, | |
921 | EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); | |
922 | eeprom_apme_mask = E1000_EEPROM_82544_APM; | |
923 | break; | |
cd94dd0b AK |
924 | case e1000_ich8lan: |
925 | e1000_read_eeprom(&adapter->hw, | |
926 | EEPROM_INIT_CONTROL1_REG, 1, &eeprom_data); | |
927 | eeprom_apme_mask = E1000_EEPROM_ICH8_APME; | |
928 | break; | |
1da177e4 LT |
929 | case e1000_82546: |
930 | case e1000_82546_rev_3: | |
fd803241 | 931 | case e1000_82571: |
6418ecc6 | 932 | case e1000_80003es2lan: |
96838a40 | 933 | if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1){ |
1da177e4 LT |
934 | e1000_read_eeprom(&adapter->hw, |
935 | EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); | |
936 | break; | |
937 | } | |
938 | /* Fall Through */ | |
939 | default: | |
940 | e1000_read_eeprom(&adapter->hw, | |
941 | EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); | |
942 | break; | |
943 | } | |
96838a40 | 944 | if (eeprom_data & eeprom_apme_mask) |
120cd576 JB |
945 | adapter->eeprom_wol |= E1000_WUFC_MAG; |
946 | ||
947 | /* now that we have the eeprom settings, apply the special cases | |
948 | * where the eeprom may be wrong or the board simply won't support | |
949 | * wake on lan on a particular port */ | |
950 | switch (pdev->device) { | |
951 | case E1000_DEV_ID_82546GB_PCIE: | |
952 | adapter->eeprom_wol = 0; | |
953 | break; | |
954 | case E1000_DEV_ID_82546EB_FIBER: | |
955 | case E1000_DEV_ID_82546GB_FIBER: | |
956 | case E1000_DEV_ID_82571EB_FIBER: | |
957 | /* Wake events only supported on port A for dual fiber | |
958 | * regardless of eeprom setting */ | |
959 | if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1) | |
960 | adapter->eeprom_wol = 0; | |
961 | break; | |
962 | case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3: | |
5881cde8 | 963 | case E1000_DEV_ID_82571EB_QUAD_COPPER: |
120cd576 JB |
964 | /* if quad port adapter, disable WoL on all but port A */ |
965 | if (global_quad_port_a != 0) | |
966 | adapter->eeprom_wol = 0; | |
967 | else | |
968 | adapter->quad_port_a = 1; | |
969 | /* Reset for multiple quad port adapters */ | |
970 | if (++global_quad_port_a == 4) | |
971 | global_quad_port_a = 0; | |
972 | break; | |
973 | } | |
974 | ||
975 | /* initialize the wol settings based on the eeprom settings */ | |
976 | adapter->wol = adapter->eeprom_wol; | |
1da177e4 | 977 | |
fb3d47d4 JK |
978 | /* print bus type/speed/width info */ |
979 | { | |
980 | struct e1000_hw *hw = &adapter->hw; | |
981 | DPRINTK(PROBE, INFO, "(PCI%s:%s:%s) ", | |
982 | ((hw->bus_type == e1000_bus_type_pcix) ? "-X" : | |
983 | (hw->bus_type == e1000_bus_type_pci_express ? " Express":"")), | |
984 | ((hw->bus_speed == e1000_bus_speed_2500) ? "2.5Gb/s" : | |
985 | (hw->bus_speed == e1000_bus_speed_133) ? "133MHz" : | |
986 | (hw->bus_speed == e1000_bus_speed_120) ? "120MHz" : | |
987 | (hw->bus_speed == e1000_bus_speed_100) ? "100MHz" : | |
988 | (hw->bus_speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"), | |
989 | ((hw->bus_width == e1000_bus_width_64) ? "64-bit" : | |
990 | (hw->bus_width == e1000_bus_width_pciex_4) ? "Width x4" : | |
991 | (hw->bus_width == e1000_bus_width_pciex_1) ? "Width x1" : | |
992 | "32-bit")); | |
993 | } | |
994 | ||
995 | for (i = 0; i < 6; i++) | |
996 | printk("%2.2x%c", netdev->dev_addr[i], i == 5 ? '\n' : ':'); | |
997 | ||
1da177e4 LT |
998 | /* reset the hardware with the new settings */ |
999 | e1000_reset(adapter); | |
1000 | ||
b55ccb35 JK |
1001 | /* If the controller is 82573 and f/w is AMT, do not set |
1002 | * DRV_LOAD until the interface is up. For all other cases, | |
1003 | * let the f/w know that the h/w is now under the control | |
1004 | * of the driver. */ | |
1005 | if (adapter->hw.mac_type != e1000_82573 || | |
1006 | !e1000_check_mng_mode(&adapter->hw)) | |
1007 | e1000_get_hw_control(adapter); | |
2d7edb92 | 1008 | |
1da177e4 | 1009 | strcpy(netdev->name, "eth%d"); |
96838a40 | 1010 | if ((err = register_netdev(netdev))) |
1da177e4 LT |
1011 | goto err_register; |
1012 | ||
1314bbf3 AK |
1013 | /* tell the stack to leave us alone until e1000_open() is called */ |
1014 | netif_carrier_off(netdev); | |
1015 | netif_stop_queue(netdev); | |
1016 | ||
1da177e4 LT |
1017 | DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n"); |
1018 | ||
1019 | cards_found++; | |
1020 | return 0; | |
1021 | ||
1022 | err_register: | |
6dd62ab0 VA |
1023 | e1000_release_hw_control(adapter); |
1024 | err_eeprom: | |
1025 | if (!e1000_check_phy_reset_block(&adapter->hw)) | |
1026 | e1000_phy_hw_reset(&adapter->hw); | |
1027 | ||
cd94dd0b AK |
1028 | if (adapter->hw.flash_address) |
1029 | iounmap(adapter->hw.flash_address); | |
1030 | err_flashmap: | |
6dd62ab0 VA |
1031 | #ifdef CONFIG_E1000_NAPI |
1032 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1033 | dev_put(&adapter->polling_netdev[i]); | |
1034 | #endif | |
1035 | ||
1036 | kfree(adapter->tx_ring); | |
1037 | kfree(adapter->rx_ring); | |
1038 | #ifdef CONFIG_E1000_NAPI | |
1039 | kfree(adapter->polling_netdev); | |
1040 | #endif | |
1da177e4 | 1041 | err_sw_init: |
1da177e4 LT |
1042 | iounmap(adapter->hw.hw_addr); |
1043 | err_ioremap: | |
1044 | free_netdev(netdev); | |
1045 | err_alloc_etherdev: | |
1046 | pci_release_regions(pdev); | |
6dd62ab0 VA |
1047 | err_pci_reg: |
1048 | err_dma: | |
1049 | pci_disable_device(pdev); | |
1da177e4 LT |
1050 | return err; |
1051 | } | |
1052 | ||
1053 | /** | |
1054 | * e1000_remove - Device Removal Routine | |
1055 | * @pdev: PCI device information struct | |
1056 | * | |
1057 | * e1000_remove is called by the PCI subsystem to alert the driver | |
1058 | * that it should release a PCI device. The could be caused by a | |
1059 | * Hot-Plug event, or because the driver is going to be removed from | |
1060 | * memory. | |
1061 | **/ | |
1062 | ||
1063 | static void __devexit | |
1064 | e1000_remove(struct pci_dev *pdev) | |
1065 | { | |
1066 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 1067 | struct e1000_adapter *adapter = netdev_priv(netdev); |
b55ccb35 | 1068 | uint32_t manc; |
581d708e MC |
1069 | #ifdef CONFIG_E1000_NAPI |
1070 | int i; | |
1071 | #endif | |
1da177e4 | 1072 | |
be2b28ed JG |
1073 | flush_scheduled_work(); |
1074 | ||
4ccc12ae JB |
1075 | if (adapter->hw.mac_type >= e1000_82540 && |
1076 | adapter->hw.mac_type < e1000_82571 && | |
1077 | adapter->hw.media_type == e1000_media_type_copper) { | |
1da177e4 | 1078 | manc = E1000_READ_REG(&adapter->hw, MANC); |
96838a40 | 1079 | if (manc & E1000_MANC_SMBUS_EN) { |
1da177e4 LT |
1080 | manc |= E1000_MANC_ARP_EN; |
1081 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
1082 | } | |
1083 | } | |
1084 | ||
b55ccb35 JK |
1085 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
1086 | * would have already happened in close and is redundant. */ | |
1087 | e1000_release_hw_control(adapter); | |
2d7edb92 | 1088 | |
1da177e4 | 1089 | unregister_netdev(netdev); |
581d708e | 1090 | #ifdef CONFIG_E1000_NAPI |
f56799ea | 1091 | for (i = 0; i < adapter->num_rx_queues; i++) |
15333061 | 1092 | dev_put(&adapter->polling_netdev[i]); |
581d708e | 1093 | #endif |
1da177e4 | 1094 | |
96838a40 | 1095 | if (!e1000_check_phy_reset_block(&adapter->hw)) |
2d7edb92 | 1096 | e1000_phy_hw_reset(&adapter->hw); |
1da177e4 | 1097 | |
24025e4e MC |
1098 | kfree(adapter->tx_ring); |
1099 | kfree(adapter->rx_ring); | |
1100 | #ifdef CONFIG_E1000_NAPI | |
1101 | kfree(adapter->polling_netdev); | |
1102 | #endif | |
1103 | ||
1da177e4 | 1104 | iounmap(adapter->hw.hw_addr); |
cd94dd0b AK |
1105 | if (adapter->hw.flash_address) |
1106 | iounmap(adapter->hw.flash_address); | |
1da177e4 LT |
1107 | pci_release_regions(pdev); |
1108 | ||
1109 | free_netdev(netdev); | |
1110 | ||
1111 | pci_disable_device(pdev); | |
1112 | } | |
1113 | ||
1114 | /** | |
1115 | * e1000_sw_init - Initialize general software structures (struct e1000_adapter) | |
1116 | * @adapter: board private structure to initialize | |
1117 | * | |
1118 | * e1000_sw_init initializes the Adapter private data structure. | |
1119 | * Fields are initialized based on PCI device information and | |
1120 | * OS network device settings (MTU size). | |
1121 | **/ | |
1122 | ||
1123 | static int __devinit | |
1124 | e1000_sw_init(struct e1000_adapter *adapter) | |
1125 | { | |
1126 | struct e1000_hw *hw = &adapter->hw; | |
1127 | struct net_device *netdev = adapter->netdev; | |
1128 | struct pci_dev *pdev = adapter->pdev; | |
581d708e MC |
1129 | #ifdef CONFIG_E1000_NAPI |
1130 | int i; | |
1131 | #endif | |
1da177e4 LT |
1132 | |
1133 | /* PCI config space info */ | |
1134 | ||
1135 | hw->vendor_id = pdev->vendor; | |
1136 | hw->device_id = pdev->device; | |
1137 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
1138 | hw->subsystem_id = pdev->subsystem_device; | |
1139 | ||
1140 | pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); | |
1141 | ||
1142 | pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); | |
1143 | ||
eb0f8054 | 1144 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
9e2feace | 1145 | adapter->rx_ps_bsize0 = E1000_RXBUFFER_128; |
1da177e4 LT |
1146 | hw->max_frame_size = netdev->mtu + |
1147 | ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; | |
1148 | hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; | |
1149 | ||
1150 | /* identify the MAC */ | |
1151 | ||
96838a40 | 1152 | if (e1000_set_mac_type(hw)) { |
1da177e4 LT |
1153 | DPRINTK(PROBE, ERR, "Unknown MAC Type\n"); |
1154 | return -EIO; | |
1155 | } | |
1156 | ||
96838a40 | 1157 | switch (hw->mac_type) { |
1da177e4 LT |
1158 | default: |
1159 | break; | |
1160 | case e1000_82541: | |
1161 | case e1000_82547: | |
1162 | case e1000_82541_rev_2: | |
1163 | case e1000_82547_rev_2: | |
1164 | hw->phy_init_script = 1; | |
1165 | break; | |
1166 | } | |
1167 | ||
1168 | e1000_set_media_type(hw); | |
1169 | ||
1170 | hw->wait_autoneg_complete = FALSE; | |
1171 | hw->tbi_compatibility_en = TRUE; | |
1172 | hw->adaptive_ifs = TRUE; | |
1173 | ||
1174 | /* Copper options */ | |
1175 | ||
96838a40 | 1176 | if (hw->media_type == e1000_media_type_copper) { |
1da177e4 LT |
1177 | hw->mdix = AUTO_ALL_MODES; |
1178 | hw->disable_polarity_correction = FALSE; | |
1179 | hw->master_slave = E1000_MASTER_SLAVE; | |
1180 | } | |
1181 | ||
f56799ea JK |
1182 | adapter->num_tx_queues = 1; |
1183 | adapter->num_rx_queues = 1; | |
581d708e MC |
1184 | |
1185 | if (e1000_alloc_queues(adapter)) { | |
1186 | DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n"); | |
1187 | return -ENOMEM; | |
1188 | } | |
1189 | ||
1190 | #ifdef CONFIG_E1000_NAPI | |
f56799ea | 1191 | for (i = 0; i < adapter->num_rx_queues; i++) { |
581d708e MC |
1192 | adapter->polling_netdev[i].priv = adapter; |
1193 | adapter->polling_netdev[i].poll = &e1000_clean; | |
1194 | adapter->polling_netdev[i].weight = 64; | |
1195 | dev_hold(&adapter->polling_netdev[i]); | |
1196 | set_bit(__LINK_STATE_START, &adapter->polling_netdev[i].state); | |
1197 | } | |
7bfa4816 | 1198 | spin_lock_init(&adapter->tx_queue_lock); |
24025e4e MC |
1199 | #endif |
1200 | ||
1da177e4 LT |
1201 | atomic_set(&adapter->irq_sem, 1); |
1202 | spin_lock_init(&adapter->stats_lock); | |
1da177e4 | 1203 | |
1314bbf3 AK |
1204 | set_bit(__E1000_DOWN, &adapter->flags); |
1205 | ||
1da177e4 LT |
1206 | return 0; |
1207 | } | |
1208 | ||
581d708e MC |
1209 | /** |
1210 | * e1000_alloc_queues - Allocate memory for all rings | |
1211 | * @adapter: board private structure to initialize | |
1212 | * | |
1213 | * We allocate one ring per queue at run-time since we don't know the | |
1214 | * number of queues at compile-time. The polling_netdev array is | |
1215 | * intended for Multiqueue, but should work fine with a single queue. | |
1216 | **/ | |
1217 | ||
1218 | static int __devinit | |
1219 | e1000_alloc_queues(struct e1000_adapter *adapter) | |
1220 | { | |
1221 | int size; | |
1222 | ||
f56799ea | 1223 | size = sizeof(struct e1000_tx_ring) * adapter->num_tx_queues; |
581d708e MC |
1224 | adapter->tx_ring = kmalloc(size, GFP_KERNEL); |
1225 | if (!adapter->tx_ring) | |
1226 | return -ENOMEM; | |
1227 | memset(adapter->tx_ring, 0, size); | |
1228 | ||
f56799ea | 1229 | size = sizeof(struct e1000_rx_ring) * adapter->num_rx_queues; |
581d708e MC |
1230 | adapter->rx_ring = kmalloc(size, GFP_KERNEL); |
1231 | if (!adapter->rx_ring) { | |
1232 | kfree(adapter->tx_ring); | |
1233 | return -ENOMEM; | |
1234 | } | |
1235 | memset(adapter->rx_ring, 0, size); | |
1236 | ||
1237 | #ifdef CONFIG_E1000_NAPI | |
f56799ea | 1238 | size = sizeof(struct net_device) * adapter->num_rx_queues; |
581d708e MC |
1239 | adapter->polling_netdev = kmalloc(size, GFP_KERNEL); |
1240 | if (!adapter->polling_netdev) { | |
1241 | kfree(adapter->tx_ring); | |
1242 | kfree(adapter->rx_ring); | |
1243 | return -ENOMEM; | |
1244 | } | |
1245 | memset(adapter->polling_netdev, 0, size); | |
1246 | #endif | |
1247 | ||
1248 | return E1000_SUCCESS; | |
1249 | } | |
1250 | ||
1da177e4 LT |
1251 | /** |
1252 | * e1000_open - Called when a network interface is made active | |
1253 | * @netdev: network interface device structure | |
1254 | * | |
1255 | * Returns 0 on success, negative value on failure | |
1256 | * | |
1257 | * The open entry point is called when a network interface is made | |
1258 | * active by the system (IFF_UP). At this point all resources needed | |
1259 | * for transmit and receive operations are allocated, the interrupt | |
1260 | * handler is registered with the OS, the watchdog timer is started, | |
1261 | * and the stack is notified that the interface is ready. | |
1262 | **/ | |
1263 | ||
1264 | static int | |
1265 | e1000_open(struct net_device *netdev) | |
1266 | { | |
60490fe0 | 1267 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1268 | int err; |
1269 | ||
2db10a08 | 1270 | /* disallow open during test */ |
1314bbf3 | 1271 | if (test_bit(__E1000_TESTING, &adapter->flags)) |
2db10a08 AK |
1272 | return -EBUSY; |
1273 | ||
1da177e4 | 1274 | /* allocate transmit descriptors */ |
581d708e | 1275 | if ((err = e1000_setup_all_tx_resources(adapter))) |
1da177e4 LT |
1276 | goto err_setup_tx; |
1277 | ||
1278 | /* allocate receive descriptors */ | |
581d708e | 1279 | if ((err = e1000_setup_all_rx_resources(adapter))) |
1da177e4 LT |
1280 | goto err_setup_rx; |
1281 | ||
2db10a08 AK |
1282 | err = e1000_request_irq(adapter); |
1283 | if (err) | |
401a552b | 1284 | goto err_req_irq; |
2db10a08 | 1285 | |
79f05bf0 AK |
1286 | e1000_power_up_phy(adapter); |
1287 | ||
96838a40 | 1288 | if ((err = e1000_up(adapter))) |
1da177e4 | 1289 | goto err_up; |
2d7edb92 | 1290 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
96838a40 | 1291 | if ((adapter->hw.mng_cookie.status & |
2d7edb92 MC |
1292 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { |
1293 | e1000_update_mng_vlan(adapter); | |
1294 | } | |
1da177e4 | 1295 | |
b55ccb35 JK |
1296 | /* If AMT is enabled, let the firmware know that the network |
1297 | * interface is now open */ | |
1298 | if (adapter->hw.mac_type == e1000_82573 && | |
1299 | e1000_check_mng_mode(&adapter->hw)) | |
1300 | e1000_get_hw_control(adapter); | |
1301 | ||
1da177e4 LT |
1302 | return E1000_SUCCESS; |
1303 | ||
1304 | err_up: | |
401a552b VA |
1305 | e1000_power_down_phy(adapter); |
1306 | e1000_free_irq(adapter); | |
1307 | err_req_irq: | |
581d708e | 1308 | e1000_free_all_rx_resources(adapter); |
1da177e4 | 1309 | err_setup_rx: |
581d708e | 1310 | e1000_free_all_tx_resources(adapter); |
1da177e4 LT |
1311 | err_setup_tx: |
1312 | e1000_reset(adapter); | |
1313 | ||
1314 | return err; | |
1315 | } | |
1316 | ||
1317 | /** | |
1318 | * e1000_close - Disables a network interface | |
1319 | * @netdev: network interface device structure | |
1320 | * | |
1321 | * Returns 0, this is not allowed to fail | |
1322 | * | |
1323 | * The close entry point is called when an interface is de-activated | |
1324 | * by the OS. The hardware is still under the drivers control, but | |
1325 | * needs to be disabled. A global MAC reset is issued to stop the | |
1326 | * hardware, and all transmit and receive resources are freed. | |
1327 | **/ | |
1328 | ||
1329 | static int | |
1330 | e1000_close(struct net_device *netdev) | |
1331 | { | |
60490fe0 | 1332 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 1333 | |
2db10a08 | 1334 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
1da177e4 | 1335 | e1000_down(adapter); |
79f05bf0 | 1336 | e1000_power_down_phy(adapter); |
2db10a08 | 1337 | e1000_free_irq(adapter); |
1da177e4 | 1338 | |
581d708e MC |
1339 | e1000_free_all_tx_resources(adapter); |
1340 | e1000_free_all_rx_resources(adapter); | |
1da177e4 | 1341 | |
4666560a BA |
1342 | /* kill manageability vlan ID if supported, but not if a vlan with |
1343 | * the same ID is registered on the host OS (let 8021q kill it) */ | |
96838a40 | 1344 | if ((adapter->hw.mng_cookie.status & |
4666560a BA |
1345 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
1346 | !(adapter->vlgrp && | |
1347 | adapter->vlgrp->vlan_devices[adapter->mng_vlan_id])) { | |
2d7edb92 MC |
1348 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
1349 | } | |
b55ccb35 JK |
1350 | |
1351 | /* If AMT is enabled, let the firmware know that the network | |
1352 | * interface is now closed */ | |
1353 | if (adapter->hw.mac_type == e1000_82573 && | |
1354 | e1000_check_mng_mode(&adapter->hw)) | |
1355 | e1000_release_hw_control(adapter); | |
1356 | ||
1da177e4 LT |
1357 | return 0; |
1358 | } | |
1359 | ||
1360 | /** | |
1361 | * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary | |
1362 | * @adapter: address of board private structure | |
2d7edb92 MC |
1363 | * @start: address of beginning of memory |
1364 | * @len: length of memory | |
1da177e4 | 1365 | **/ |
e619d523 | 1366 | static boolean_t |
1da177e4 LT |
1367 | e1000_check_64k_bound(struct e1000_adapter *adapter, |
1368 | void *start, unsigned long len) | |
1369 | { | |
1370 | unsigned long begin = (unsigned long) start; | |
1371 | unsigned long end = begin + len; | |
1372 | ||
2648345f MC |
1373 | /* First rev 82545 and 82546 need to not allow any memory |
1374 | * write location to cross 64k boundary due to errata 23 */ | |
1da177e4 | 1375 | if (adapter->hw.mac_type == e1000_82545 || |
2648345f | 1376 | adapter->hw.mac_type == e1000_82546) { |
1da177e4 LT |
1377 | return ((begin ^ (end - 1)) >> 16) != 0 ? FALSE : TRUE; |
1378 | } | |
1379 | ||
1380 | return TRUE; | |
1381 | } | |
1382 | ||
1383 | /** | |
1384 | * e1000_setup_tx_resources - allocate Tx resources (Descriptors) | |
1385 | * @adapter: board private structure | |
581d708e | 1386 | * @txdr: tx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1387 | * |
1388 | * Return 0 on success, negative on failure | |
1389 | **/ | |
1390 | ||
3ad2cc67 | 1391 | static int |
581d708e MC |
1392 | e1000_setup_tx_resources(struct e1000_adapter *adapter, |
1393 | struct e1000_tx_ring *txdr) | |
1da177e4 | 1394 | { |
1da177e4 LT |
1395 | struct pci_dev *pdev = adapter->pdev; |
1396 | int size; | |
1397 | ||
1398 | size = sizeof(struct e1000_buffer) * txdr->count; | |
cd94dd0b | 1399 | txdr->buffer_info = vmalloc(size); |
96838a40 | 1400 | if (!txdr->buffer_info) { |
2648345f MC |
1401 | DPRINTK(PROBE, ERR, |
1402 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1da177e4 LT |
1403 | return -ENOMEM; |
1404 | } | |
1405 | memset(txdr->buffer_info, 0, size); | |
1406 | ||
1407 | /* round up to nearest 4K */ | |
1408 | ||
1409 | txdr->size = txdr->count * sizeof(struct e1000_tx_desc); | |
1410 | E1000_ROUNDUP(txdr->size, 4096); | |
1411 | ||
1412 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); | |
96838a40 | 1413 | if (!txdr->desc) { |
1da177e4 | 1414 | setup_tx_desc_die: |
1da177e4 | 1415 | vfree(txdr->buffer_info); |
2648345f MC |
1416 | DPRINTK(PROBE, ERR, |
1417 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1da177e4 LT |
1418 | return -ENOMEM; |
1419 | } | |
1420 | ||
2648345f | 1421 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1422 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
1423 | void *olddesc = txdr->desc; | |
1424 | dma_addr_t olddma = txdr->dma; | |
2648345f MC |
1425 | DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes " |
1426 | "at %p\n", txdr->size, txdr->desc); | |
1427 | /* Try again, without freeing the previous */ | |
1da177e4 | 1428 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); |
2648345f | 1429 | /* Failed allocation, critical failure */ |
96838a40 | 1430 | if (!txdr->desc) { |
1da177e4 LT |
1431 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1432 | goto setup_tx_desc_die; | |
1433 | } | |
1434 | ||
1435 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { | |
1436 | /* give up */ | |
2648345f MC |
1437 | pci_free_consistent(pdev, txdr->size, txdr->desc, |
1438 | txdr->dma); | |
1da177e4 LT |
1439 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1440 | DPRINTK(PROBE, ERR, | |
2648345f MC |
1441 | "Unable to allocate aligned memory " |
1442 | "for the transmit descriptor ring\n"); | |
1da177e4 LT |
1443 | vfree(txdr->buffer_info); |
1444 | return -ENOMEM; | |
1445 | } else { | |
2648345f | 1446 | /* Free old allocation, new allocation was successful */ |
1da177e4 LT |
1447 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1448 | } | |
1449 | } | |
1450 | memset(txdr->desc, 0, txdr->size); | |
1451 | ||
1452 | txdr->next_to_use = 0; | |
1453 | txdr->next_to_clean = 0; | |
2ae76d98 | 1454 | spin_lock_init(&txdr->tx_lock); |
1da177e4 LT |
1455 | |
1456 | return 0; | |
1457 | } | |
1458 | ||
581d708e MC |
1459 | /** |
1460 | * e1000_setup_all_tx_resources - wrapper to allocate Tx resources | |
1461 | * (Descriptors) for all queues | |
1462 | * @adapter: board private structure | |
1463 | * | |
581d708e MC |
1464 | * Return 0 on success, negative on failure |
1465 | **/ | |
1466 | ||
1467 | int | |
1468 | e1000_setup_all_tx_resources(struct e1000_adapter *adapter) | |
1469 | { | |
1470 | int i, err = 0; | |
1471 | ||
f56799ea | 1472 | for (i = 0; i < adapter->num_tx_queues; i++) { |
581d708e MC |
1473 | err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
1474 | if (err) { | |
1475 | DPRINTK(PROBE, ERR, | |
1476 | "Allocation for Tx Queue %u failed\n", i); | |
3fbbc72e VA |
1477 | for (i-- ; i >= 0; i--) |
1478 | e1000_free_tx_resources(adapter, | |
1479 | &adapter->tx_ring[i]); | |
581d708e MC |
1480 | break; |
1481 | } | |
1482 | } | |
1483 | ||
1484 | return err; | |
1485 | } | |
1486 | ||
1da177e4 LT |
1487 | /** |
1488 | * e1000_configure_tx - Configure 8254x Transmit Unit after Reset | |
1489 | * @adapter: board private structure | |
1490 | * | |
1491 | * Configure the Tx unit of the MAC after a reset. | |
1492 | **/ | |
1493 | ||
1494 | static void | |
1495 | e1000_configure_tx(struct e1000_adapter *adapter) | |
1496 | { | |
581d708e MC |
1497 | uint64_t tdba; |
1498 | struct e1000_hw *hw = &adapter->hw; | |
1499 | uint32_t tdlen, tctl, tipg, tarc; | |
0fadb059 | 1500 | uint32_t ipgr1, ipgr2; |
1da177e4 LT |
1501 | |
1502 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1503 | ||
f56799ea | 1504 | switch (adapter->num_tx_queues) { |
24025e4e MC |
1505 | case 1: |
1506 | default: | |
581d708e MC |
1507 | tdba = adapter->tx_ring[0].dma; |
1508 | tdlen = adapter->tx_ring[0].count * | |
1509 | sizeof(struct e1000_tx_desc); | |
581d708e | 1510 | E1000_WRITE_REG(hw, TDLEN, tdlen); |
4ca213a6 AK |
1511 | E1000_WRITE_REG(hw, TDBAH, (tdba >> 32)); |
1512 | E1000_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL)); | |
581d708e | 1513 | E1000_WRITE_REG(hw, TDT, 0); |
4ca213a6 | 1514 | E1000_WRITE_REG(hw, TDH, 0); |
6a951698 AK |
1515 | adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH); |
1516 | adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT); | |
24025e4e MC |
1517 | break; |
1518 | } | |
1da177e4 LT |
1519 | |
1520 | /* Set the default values for the Tx Inter Packet Gap timer */ | |
1521 | ||
0fadb059 JK |
1522 | if (hw->media_type == e1000_media_type_fiber || |
1523 | hw->media_type == e1000_media_type_internal_serdes) | |
1524 | tipg = DEFAULT_82543_TIPG_IPGT_FIBER; | |
1525 | else | |
1526 | tipg = DEFAULT_82543_TIPG_IPGT_COPPER; | |
1527 | ||
581d708e | 1528 | switch (hw->mac_type) { |
1da177e4 LT |
1529 | case e1000_82542_rev2_0: |
1530 | case e1000_82542_rev2_1: | |
1531 | tipg = DEFAULT_82542_TIPG_IPGT; | |
0fadb059 JK |
1532 | ipgr1 = DEFAULT_82542_TIPG_IPGR1; |
1533 | ipgr2 = DEFAULT_82542_TIPG_IPGR2; | |
1da177e4 | 1534 | break; |
87041639 JK |
1535 | case e1000_80003es2lan: |
1536 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; | |
1537 | ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; | |
1538 | break; | |
1da177e4 | 1539 | default: |
0fadb059 JK |
1540 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
1541 | ipgr2 = DEFAULT_82543_TIPG_IPGR2; | |
1542 | break; | |
1da177e4 | 1543 | } |
0fadb059 JK |
1544 | tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; |
1545 | tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; | |
581d708e | 1546 | E1000_WRITE_REG(hw, TIPG, tipg); |
1da177e4 LT |
1547 | |
1548 | /* Set the Tx Interrupt Delay register */ | |
1549 | ||
581d708e MC |
1550 | E1000_WRITE_REG(hw, TIDV, adapter->tx_int_delay); |
1551 | if (hw->mac_type >= e1000_82540) | |
1552 | E1000_WRITE_REG(hw, TADV, adapter->tx_abs_int_delay); | |
1da177e4 LT |
1553 | |
1554 | /* Program the Transmit Control Register */ | |
1555 | ||
581d708e | 1556 | tctl = E1000_READ_REG(hw, TCTL); |
1da177e4 | 1557 | tctl &= ~E1000_TCTL_CT; |
7e6c9861 | 1558 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
1da177e4 LT |
1559 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
1560 | ||
2ae76d98 MC |
1561 | if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) { |
1562 | tarc = E1000_READ_REG(hw, TARC0); | |
90fb5135 AK |
1563 | /* set the speed mode bit, we'll clear it if we're not at |
1564 | * gigabit link later */ | |
09ae3e88 | 1565 | tarc |= (1 << 21); |
2ae76d98 | 1566 | E1000_WRITE_REG(hw, TARC0, tarc); |
87041639 JK |
1567 | } else if (hw->mac_type == e1000_80003es2lan) { |
1568 | tarc = E1000_READ_REG(hw, TARC0); | |
1569 | tarc |= 1; | |
87041639 JK |
1570 | E1000_WRITE_REG(hw, TARC0, tarc); |
1571 | tarc = E1000_READ_REG(hw, TARC1); | |
1572 | tarc |= 1; | |
1573 | E1000_WRITE_REG(hw, TARC1, tarc); | |
2ae76d98 MC |
1574 | } |
1575 | ||
581d708e | 1576 | e1000_config_collision_dist(hw); |
1da177e4 LT |
1577 | |
1578 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
1579 | adapter->txd_cmd = E1000_TXD_CMD_IDE | E1000_TXD_CMD_EOP | | |
1580 | E1000_TXD_CMD_IFCS; | |
1581 | ||
581d708e | 1582 | if (hw->mac_type < e1000_82543) |
1da177e4 LT |
1583 | adapter->txd_cmd |= E1000_TXD_CMD_RPS; |
1584 | else | |
1585 | adapter->txd_cmd |= E1000_TXD_CMD_RS; | |
1586 | ||
1587 | /* Cache if we're 82544 running in PCI-X because we'll | |
1588 | * need this to apply a workaround later in the send path. */ | |
581d708e MC |
1589 | if (hw->mac_type == e1000_82544 && |
1590 | hw->bus_type == e1000_bus_type_pcix) | |
1da177e4 | 1591 | adapter->pcix_82544 = 1; |
7e6c9861 JK |
1592 | |
1593 | E1000_WRITE_REG(hw, TCTL, tctl); | |
1594 | ||
1da177e4 LT |
1595 | } |
1596 | ||
1597 | /** | |
1598 | * e1000_setup_rx_resources - allocate Rx resources (Descriptors) | |
1599 | * @adapter: board private structure | |
581d708e | 1600 | * @rxdr: rx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1601 | * |
1602 | * Returns 0 on success, negative on failure | |
1603 | **/ | |
1604 | ||
3ad2cc67 | 1605 | static int |
581d708e MC |
1606 | e1000_setup_rx_resources(struct e1000_adapter *adapter, |
1607 | struct e1000_rx_ring *rxdr) | |
1da177e4 | 1608 | { |
1da177e4 | 1609 | struct pci_dev *pdev = adapter->pdev; |
2d7edb92 | 1610 | int size, desc_len; |
1da177e4 LT |
1611 | |
1612 | size = sizeof(struct e1000_buffer) * rxdr->count; | |
cd94dd0b | 1613 | rxdr->buffer_info = vmalloc(size); |
581d708e | 1614 | if (!rxdr->buffer_info) { |
2648345f MC |
1615 | DPRINTK(PROBE, ERR, |
1616 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1da177e4 LT |
1617 | return -ENOMEM; |
1618 | } | |
1619 | memset(rxdr->buffer_info, 0, size); | |
1620 | ||
2d7edb92 MC |
1621 | size = sizeof(struct e1000_ps_page) * rxdr->count; |
1622 | rxdr->ps_page = kmalloc(size, GFP_KERNEL); | |
96838a40 | 1623 | if (!rxdr->ps_page) { |
2d7edb92 MC |
1624 | vfree(rxdr->buffer_info); |
1625 | DPRINTK(PROBE, ERR, | |
1626 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1627 | return -ENOMEM; | |
1628 | } | |
1629 | memset(rxdr->ps_page, 0, size); | |
1630 | ||
1631 | size = sizeof(struct e1000_ps_page_dma) * rxdr->count; | |
1632 | rxdr->ps_page_dma = kmalloc(size, GFP_KERNEL); | |
96838a40 | 1633 | if (!rxdr->ps_page_dma) { |
2d7edb92 MC |
1634 | vfree(rxdr->buffer_info); |
1635 | kfree(rxdr->ps_page); | |
1636 | DPRINTK(PROBE, ERR, | |
1637 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1638 | return -ENOMEM; | |
1639 | } | |
1640 | memset(rxdr->ps_page_dma, 0, size); | |
1641 | ||
96838a40 | 1642 | if (adapter->hw.mac_type <= e1000_82547_rev_2) |
2d7edb92 MC |
1643 | desc_len = sizeof(struct e1000_rx_desc); |
1644 | else | |
1645 | desc_len = sizeof(union e1000_rx_desc_packet_split); | |
1646 | ||
1da177e4 LT |
1647 | /* Round up to nearest 4K */ |
1648 | ||
2d7edb92 | 1649 | rxdr->size = rxdr->count * desc_len; |
1da177e4 LT |
1650 | E1000_ROUNDUP(rxdr->size, 4096); |
1651 | ||
1652 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); | |
1653 | ||
581d708e MC |
1654 | if (!rxdr->desc) { |
1655 | DPRINTK(PROBE, ERR, | |
1656 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1da177e4 | 1657 | setup_rx_desc_die: |
1da177e4 | 1658 | vfree(rxdr->buffer_info); |
2d7edb92 MC |
1659 | kfree(rxdr->ps_page); |
1660 | kfree(rxdr->ps_page_dma); | |
1da177e4 LT |
1661 | return -ENOMEM; |
1662 | } | |
1663 | ||
2648345f | 1664 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1665 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
1666 | void *olddesc = rxdr->desc; | |
1667 | dma_addr_t olddma = rxdr->dma; | |
2648345f MC |
1668 | DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes " |
1669 | "at %p\n", rxdr->size, rxdr->desc); | |
1670 | /* Try again, without freeing the previous */ | |
1da177e4 | 1671 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); |
2648345f | 1672 | /* Failed allocation, critical failure */ |
581d708e | 1673 | if (!rxdr->desc) { |
1da177e4 | 1674 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
581d708e MC |
1675 | DPRINTK(PROBE, ERR, |
1676 | "Unable to allocate memory " | |
1677 | "for the receive descriptor ring\n"); | |
1da177e4 LT |
1678 | goto setup_rx_desc_die; |
1679 | } | |
1680 | ||
1681 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { | |
1682 | /* give up */ | |
2648345f MC |
1683 | pci_free_consistent(pdev, rxdr->size, rxdr->desc, |
1684 | rxdr->dma); | |
1da177e4 | 1685 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
2648345f MC |
1686 | DPRINTK(PROBE, ERR, |
1687 | "Unable to allocate aligned memory " | |
1688 | "for the receive descriptor ring\n"); | |
581d708e | 1689 | goto setup_rx_desc_die; |
1da177e4 | 1690 | } else { |
2648345f | 1691 | /* Free old allocation, new allocation was successful */ |
1da177e4 LT |
1692 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
1693 | } | |
1694 | } | |
1695 | memset(rxdr->desc, 0, rxdr->size); | |
1696 | ||
1697 | rxdr->next_to_clean = 0; | |
1698 | rxdr->next_to_use = 0; | |
1699 | ||
1700 | return 0; | |
1701 | } | |
1702 | ||
581d708e MC |
1703 | /** |
1704 | * e1000_setup_all_rx_resources - wrapper to allocate Rx resources | |
1705 | * (Descriptors) for all queues | |
1706 | * @adapter: board private structure | |
1707 | * | |
581d708e MC |
1708 | * Return 0 on success, negative on failure |
1709 | **/ | |
1710 | ||
1711 | int | |
1712 | e1000_setup_all_rx_resources(struct e1000_adapter *adapter) | |
1713 | { | |
1714 | int i, err = 0; | |
1715 | ||
f56799ea | 1716 | for (i = 0; i < adapter->num_rx_queues; i++) { |
581d708e MC |
1717 | err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
1718 | if (err) { | |
1719 | DPRINTK(PROBE, ERR, | |
1720 | "Allocation for Rx Queue %u failed\n", i); | |
3fbbc72e VA |
1721 | for (i-- ; i >= 0; i--) |
1722 | e1000_free_rx_resources(adapter, | |
1723 | &adapter->rx_ring[i]); | |
581d708e MC |
1724 | break; |
1725 | } | |
1726 | } | |
1727 | ||
1728 | return err; | |
1729 | } | |
1730 | ||
1da177e4 | 1731 | /** |
2648345f | 1732 | * e1000_setup_rctl - configure the receive control registers |
1da177e4 LT |
1733 | * @adapter: Board private structure |
1734 | **/ | |
e4c811c9 MC |
1735 | #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ |
1736 | (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) | |
1da177e4 LT |
1737 | static void |
1738 | e1000_setup_rctl(struct e1000_adapter *adapter) | |
1739 | { | |
2d7edb92 MC |
1740 | uint32_t rctl, rfctl; |
1741 | uint32_t psrctl = 0; | |
35ec56bb | 1742 | #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT |
e4c811c9 MC |
1743 | uint32_t pages = 0; |
1744 | #endif | |
1da177e4 LT |
1745 | |
1746 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
1747 | ||
1748 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
1749 | ||
1750 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | | |
1751 | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | | |
1752 | (adapter->hw.mc_filter_type << E1000_RCTL_MO_SHIFT); | |
1753 | ||
0fadb059 | 1754 | if (adapter->hw.tbi_compatibility_on == 1) |
1da177e4 LT |
1755 | rctl |= E1000_RCTL_SBP; |
1756 | else | |
1757 | rctl &= ~E1000_RCTL_SBP; | |
1758 | ||
2d7edb92 MC |
1759 | if (adapter->netdev->mtu <= ETH_DATA_LEN) |
1760 | rctl &= ~E1000_RCTL_LPE; | |
1761 | else | |
1762 | rctl |= E1000_RCTL_LPE; | |
1763 | ||
1da177e4 | 1764 | /* Setup buffer sizes */ |
9e2feace AK |
1765 | rctl &= ~E1000_RCTL_SZ_4096; |
1766 | rctl |= E1000_RCTL_BSEX; | |
1767 | switch (adapter->rx_buffer_len) { | |
1768 | case E1000_RXBUFFER_256: | |
1769 | rctl |= E1000_RCTL_SZ_256; | |
1770 | rctl &= ~E1000_RCTL_BSEX; | |
1771 | break; | |
1772 | case E1000_RXBUFFER_512: | |
1773 | rctl |= E1000_RCTL_SZ_512; | |
1774 | rctl &= ~E1000_RCTL_BSEX; | |
1775 | break; | |
1776 | case E1000_RXBUFFER_1024: | |
1777 | rctl |= E1000_RCTL_SZ_1024; | |
1778 | rctl &= ~E1000_RCTL_BSEX; | |
1779 | break; | |
a1415ee6 JK |
1780 | case E1000_RXBUFFER_2048: |
1781 | default: | |
1782 | rctl |= E1000_RCTL_SZ_2048; | |
1783 | rctl &= ~E1000_RCTL_BSEX; | |
1784 | break; | |
1785 | case E1000_RXBUFFER_4096: | |
1786 | rctl |= E1000_RCTL_SZ_4096; | |
1787 | break; | |
1788 | case E1000_RXBUFFER_8192: | |
1789 | rctl |= E1000_RCTL_SZ_8192; | |
1790 | break; | |
1791 | case E1000_RXBUFFER_16384: | |
1792 | rctl |= E1000_RCTL_SZ_16384; | |
1793 | break; | |
2d7edb92 MC |
1794 | } |
1795 | ||
35ec56bb | 1796 | #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT |
2d7edb92 MC |
1797 | /* 82571 and greater support packet-split where the protocol |
1798 | * header is placed in skb->data and the packet data is | |
1799 | * placed in pages hanging off of skb_shinfo(skb)->nr_frags. | |
1800 | * In the case of a non-split, skb->data is linearly filled, | |
1801 | * followed by the page buffers. Therefore, skb->data is | |
1802 | * sized to hold the largest protocol header. | |
1803 | */ | |
e64d7d02 JB |
1804 | /* allocations using alloc_page take too long for regular MTU |
1805 | * so only enable packet split for jumbo frames */ | |
e4c811c9 | 1806 | pages = PAGE_USE_COUNT(adapter->netdev->mtu); |
e64d7d02 JB |
1807 | if ((adapter->hw.mac_type >= e1000_82571) && (pages <= 3) && |
1808 | PAGE_SIZE <= 16384 && (rctl & E1000_RCTL_LPE)) | |
e4c811c9 MC |
1809 | adapter->rx_ps_pages = pages; |
1810 | else | |
1811 | adapter->rx_ps_pages = 0; | |
2d7edb92 | 1812 | #endif |
e4c811c9 | 1813 | if (adapter->rx_ps_pages) { |
2d7edb92 MC |
1814 | /* Configure extra packet-split registers */ |
1815 | rfctl = E1000_READ_REG(&adapter->hw, RFCTL); | |
1816 | rfctl |= E1000_RFCTL_EXTEN; | |
87ca4e5b AK |
1817 | /* disable packet split support for IPv6 extension headers, |
1818 | * because some malformed IPv6 headers can hang the RX */ | |
1819 | rfctl |= (E1000_RFCTL_IPV6_EX_DIS | | |
1820 | E1000_RFCTL_NEW_IPV6_EXT_DIS); | |
1821 | ||
2d7edb92 MC |
1822 | E1000_WRITE_REG(&adapter->hw, RFCTL, rfctl); |
1823 | ||
7dfee0cb | 1824 | rctl |= E1000_RCTL_DTYP_PS; |
96838a40 | 1825 | |
2d7edb92 MC |
1826 | psrctl |= adapter->rx_ps_bsize0 >> |
1827 | E1000_PSRCTL_BSIZE0_SHIFT; | |
e4c811c9 MC |
1828 | |
1829 | switch (adapter->rx_ps_pages) { | |
1830 | case 3: | |
1831 | psrctl |= PAGE_SIZE << | |
1832 | E1000_PSRCTL_BSIZE3_SHIFT; | |
1833 | case 2: | |
1834 | psrctl |= PAGE_SIZE << | |
1835 | E1000_PSRCTL_BSIZE2_SHIFT; | |
1836 | case 1: | |
1837 | psrctl |= PAGE_SIZE >> | |
1838 | E1000_PSRCTL_BSIZE1_SHIFT; | |
1839 | break; | |
1840 | } | |
2d7edb92 MC |
1841 | |
1842 | E1000_WRITE_REG(&adapter->hw, PSRCTL, psrctl); | |
1da177e4 LT |
1843 | } |
1844 | ||
1845 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
1846 | } | |
1847 | ||
1848 | /** | |
1849 | * e1000_configure_rx - Configure 8254x Receive Unit after Reset | |
1850 | * @adapter: board private structure | |
1851 | * | |
1852 | * Configure the Rx unit of the MAC after a reset. | |
1853 | **/ | |
1854 | ||
1855 | static void | |
1856 | e1000_configure_rx(struct e1000_adapter *adapter) | |
1857 | { | |
581d708e MC |
1858 | uint64_t rdba; |
1859 | struct e1000_hw *hw = &adapter->hw; | |
1860 | uint32_t rdlen, rctl, rxcsum, ctrl_ext; | |
2d7edb92 | 1861 | |
e4c811c9 | 1862 | if (adapter->rx_ps_pages) { |
0f15a8fa | 1863 | /* this is a 32 byte descriptor */ |
581d708e | 1864 | rdlen = adapter->rx_ring[0].count * |
2d7edb92 MC |
1865 | sizeof(union e1000_rx_desc_packet_split); |
1866 | adapter->clean_rx = e1000_clean_rx_irq_ps; | |
1867 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; | |
1868 | } else { | |
581d708e MC |
1869 | rdlen = adapter->rx_ring[0].count * |
1870 | sizeof(struct e1000_rx_desc); | |
2d7edb92 MC |
1871 | adapter->clean_rx = e1000_clean_rx_irq; |
1872 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers; | |
1873 | } | |
1da177e4 LT |
1874 | |
1875 | /* disable receives while setting up the descriptors */ | |
581d708e MC |
1876 | rctl = E1000_READ_REG(hw, RCTL); |
1877 | E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); | |
1da177e4 LT |
1878 | |
1879 | /* set the Receive Delay Timer Register */ | |
581d708e | 1880 | E1000_WRITE_REG(hw, RDTR, adapter->rx_int_delay); |
1da177e4 | 1881 | |
581d708e MC |
1882 | if (hw->mac_type >= e1000_82540) { |
1883 | E1000_WRITE_REG(hw, RADV, adapter->rx_abs_int_delay); | |
96838a40 | 1884 | if (adapter->itr > 1) |
581d708e | 1885 | E1000_WRITE_REG(hw, ITR, |
1da177e4 LT |
1886 | 1000000000 / (adapter->itr * 256)); |
1887 | } | |
1888 | ||
2ae76d98 | 1889 | if (hw->mac_type >= e1000_82571) { |
2ae76d98 | 1890 | ctrl_ext = E1000_READ_REG(hw, CTRL_EXT); |
1e613fd9 | 1891 | /* Reset delay timers after every interrupt */ |
6fc7a7ec | 1892 | ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR; |
1e613fd9 JK |
1893 | #ifdef CONFIG_E1000_NAPI |
1894 | /* Auto-Mask interrupts upon ICR read. */ | |
1895 | ctrl_ext |= E1000_CTRL_EXT_IAME; | |
1896 | #endif | |
2ae76d98 | 1897 | E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); |
1e613fd9 | 1898 | E1000_WRITE_REG(hw, IAM, ~0); |
2ae76d98 MC |
1899 | E1000_WRITE_FLUSH(hw); |
1900 | } | |
1901 | ||
581d708e MC |
1902 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
1903 | * the Base and Length of the Rx Descriptor Ring */ | |
f56799ea | 1904 | switch (adapter->num_rx_queues) { |
24025e4e MC |
1905 | case 1: |
1906 | default: | |
581d708e | 1907 | rdba = adapter->rx_ring[0].dma; |
581d708e | 1908 | E1000_WRITE_REG(hw, RDLEN, rdlen); |
4ca213a6 AK |
1909 | E1000_WRITE_REG(hw, RDBAH, (rdba >> 32)); |
1910 | E1000_WRITE_REG(hw, RDBAL, (rdba & 0x00000000ffffffffULL)); | |
581d708e | 1911 | E1000_WRITE_REG(hw, RDT, 0); |
4ca213a6 | 1912 | E1000_WRITE_REG(hw, RDH, 0); |
6a951698 AK |
1913 | adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH); |
1914 | adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT); | |
581d708e | 1915 | break; |
24025e4e MC |
1916 | } |
1917 | ||
1da177e4 | 1918 | /* Enable 82543 Receive Checksum Offload for TCP and UDP */ |
581d708e MC |
1919 | if (hw->mac_type >= e1000_82543) { |
1920 | rxcsum = E1000_READ_REG(hw, RXCSUM); | |
96838a40 | 1921 | if (adapter->rx_csum == TRUE) { |
2d7edb92 MC |
1922 | rxcsum |= E1000_RXCSUM_TUOFL; |
1923 | ||
868d5309 | 1924 | /* Enable 82571 IPv4 payload checksum for UDP fragments |
2d7edb92 | 1925 | * Must be used in conjunction with packet-split. */ |
96838a40 JB |
1926 | if ((hw->mac_type >= e1000_82571) && |
1927 | (adapter->rx_ps_pages)) { | |
2d7edb92 MC |
1928 | rxcsum |= E1000_RXCSUM_IPPCSE; |
1929 | } | |
1930 | } else { | |
1931 | rxcsum &= ~E1000_RXCSUM_TUOFL; | |
1932 | /* don't need to clear IPPCSE as it defaults to 0 */ | |
1933 | } | |
581d708e | 1934 | E1000_WRITE_REG(hw, RXCSUM, rxcsum); |
1da177e4 LT |
1935 | } |
1936 | ||
21c4d5e0 AK |
1937 | /* enable early receives on 82573, only takes effect if using > 2048 |
1938 | * byte total frame size. for example only for jumbo frames */ | |
1939 | #define E1000_ERT_2048 0x100 | |
1940 | if (hw->mac_type == e1000_82573) | |
1941 | E1000_WRITE_REG(hw, ERT, E1000_ERT_2048); | |
1942 | ||
1da177e4 | 1943 | /* Enable Receives */ |
581d708e | 1944 | E1000_WRITE_REG(hw, RCTL, rctl); |
1da177e4 LT |
1945 | } |
1946 | ||
1947 | /** | |
581d708e | 1948 | * e1000_free_tx_resources - Free Tx Resources per Queue |
1da177e4 | 1949 | * @adapter: board private structure |
581d708e | 1950 | * @tx_ring: Tx descriptor ring for a specific queue |
1da177e4 LT |
1951 | * |
1952 | * Free all transmit software resources | |
1953 | **/ | |
1954 | ||
3ad2cc67 | 1955 | static void |
581d708e MC |
1956 | e1000_free_tx_resources(struct e1000_adapter *adapter, |
1957 | struct e1000_tx_ring *tx_ring) | |
1da177e4 LT |
1958 | { |
1959 | struct pci_dev *pdev = adapter->pdev; | |
1960 | ||
581d708e | 1961 | e1000_clean_tx_ring(adapter, tx_ring); |
1da177e4 | 1962 | |
581d708e MC |
1963 | vfree(tx_ring->buffer_info); |
1964 | tx_ring->buffer_info = NULL; | |
1da177e4 | 1965 | |
581d708e | 1966 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); |
1da177e4 | 1967 | |
581d708e MC |
1968 | tx_ring->desc = NULL; |
1969 | } | |
1970 | ||
1971 | /** | |
1972 | * e1000_free_all_tx_resources - Free Tx Resources for All Queues | |
1973 | * @adapter: board private structure | |
1974 | * | |
1975 | * Free all transmit software resources | |
1976 | **/ | |
1977 | ||
1978 | void | |
1979 | e1000_free_all_tx_resources(struct e1000_adapter *adapter) | |
1980 | { | |
1981 | int i; | |
1982 | ||
f56799ea | 1983 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 1984 | e1000_free_tx_resources(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
1985 | } |
1986 | ||
e619d523 | 1987 | static void |
1da177e4 LT |
1988 | e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, |
1989 | struct e1000_buffer *buffer_info) | |
1990 | { | |
96838a40 | 1991 | if (buffer_info->dma) { |
2648345f MC |
1992 | pci_unmap_page(adapter->pdev, |
1993 | buffer_info->dma, | |
1994 | buffer_info->length, | |
1995 | PCI_DMA_TODEVICE); | |
1da177e4 | 1996 | } |
8241e35e | 1997 | if (buffer_info->skb) |
1da177e4 | 1998 | dev_kfree_skb_any(buffer_info->skb); |
8241e35e | 1999 | memset(buffer_info, 0, sizeof(struct e1000_buffer)); |
1da177e4 LT |
2000 | } |
2001 | ||
2002 | /** | |
2003 | * e1000_clean_tx_ring - Free Tx Buffers | |
2004 | * @adapter: board private structure | |
581d708e | 2005 | * @tx_ring: ring to be cleaned |
1da177e4 LT |
2006 | **/ |
2007 | ||
2008 | static void | |
581d708e MC |
2009 | e1000_clean_tx_ring(struct e1000_adapter *adapter, |
2010 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 2011 | { |
1da177e4 LT |
2012 | struct e1000_buffer *buffer_info; |
2013 | unsigned long size; | |
2014 | unsigned int i; | |
2015 | ||
2016 | /* Free all the Tx ring sk_buffs */ | |
2017 | ||
96838a40 | 2018 | for (i = 0; i < tx_ring->count; i++) { |
1da177e4 LT |
2019 | buffer_info = &tx_ring->buffer_info[i]; |
2020 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); | |
2021 | } | |
2022 | ||
2023 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
2024 | memset(tx_ring->buffer_info, 0, size); | |
2025 | ||
2026 | /* Zero out the descriptor ring */ | |
2027 | ||
2028 | memset(tx_ring->desc, 0, tx_ring->size); | |
2029 | ||
2030 | tx_ring->next_to_use = 0; | |
2031 | tx_ring->next_to_clean = 0; | |
fd803241 | 2032 | tx_ring->last_tx_tso = 0; |
1da177e4 | 2033 | |
581d708e MC |
2034 | writel(0, adapter->hw.hw_addr + tx_ring->tdh); |
2035 | writel(0, adapter->hw.hw_addr + tx_ring->tdt); | |
2036 | } | |
2037 | ||
2038 | /** | |
2039 | * e1000_clean_all_tx_rings - Free Tx Buffers for all queues | |
2040 | * @adapter: board private structure | |
2041 | **/ | |
2042 | ||
2043 | static void | |
2044 | e1000_clean_all_tx_rings(struct e1000_adapter *adapter) | |
2045 | { | |
2046 | int i; | |
2047 | ||
f56799ea | 2048 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 2049 | e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
2050 | } |
2051 | ||
2052 | /** | |
2053 | * e1000_free_rx_resources - Free Rx Resources | |
2054 | * @adapter: board private structure | |
581d708e | 2055 | * @rx_ring: ring to clean the resources from |
1da177e4 LT |
2056 | * |
2057 | * Free all receive software resources | |
2058 | **/ | |
2059 | ||
3ad2cc67 | 2060 | static void |
581d708e MC |
2061 | e1000_free_rx_resources(struct e1000_adapter *adapter, |
2062 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 2063 | { |
1da177e4 LT |
2064 | struct pci_dev *pdev = adapter->pdev; |
2065 | ||
581d708e | 2066 | e1000_clean_rx_ring(adapter, rx_ring); |
1da177e4 LT |
2067 | |
2068 | vfree(rx_ring->buffer_info); | |
2069 | rx_ring->buffer_info = NULL; | |
2d7edb92 MC |
2070 | kfree(rx_ring->ps_page); |
2071 | rx_ring->ps_page = NULL; | |
2072 | kfree(rx_ring->ps_page_dma); | |
2073 | rx_ring->ps_page_dma = NULL; | |
1da177e4 LT |
2074 | |
2075 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
2076 | ||
2077 | rx_ring->desc = NULL; | |
2078 | } | |
2079 | ||
2080 | /** | |
581d708e | 2081 | * e1000_free_all_rx_resources - Free Rx Resources for All Queues |
1da177e4 | 2082 | * @adapter: board private structure |
581d708e MC |
2083 | * |
2084 | * Free all receive software resources | |
2085 | **/ | |
2086 | ||
2087 | void | |
2088 | e1000_free_all_rx_resources(struct e1000_adapter *adapter) | |
2089 | { | |
2090 | int i; | |
2091 | ||
f56799ea | 2092 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e MC |
2093 | e1000_free_rx_resources(adapter, &adapter->rx_ring[i]); |
2094 | } | |
2095 | ||
2096 | /** | |
2097 | * e1000_clean_rx_ring - Free Rx Buffers per Queue | |
2098 | * @adapter: board private structure | |
2099 | * @rx_ring: ring to free buffers from | |
1da177e4 LT |
2100 | **/ |
2101 | ||
2102 | static void | |
581d708e MC |
2103 | e1000_clean_rx_ring(struct e1000_adapter *adapter, |
2104 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 2105 | { |
1da177e4 | 2106 | struct e1000_buffer *buffer_info; |
2d7edb92 MC |
2107 | struct e1000_ps_page *ps_page; |
2108 | struct e1000_ps_page_dma *ps_page_dma; | |
1da177e4 LT |
2109 | struct pci_dev *pdev = adapter->pdev; |
2110 | unsigned long size; | |
2d7edb92 | 2111 | unsigned int i, j; |
1da177e4 LT |
2112 | |
2113 | /* Free all the Rx ring sk_buffs */ | |
96838a40 | 2114 | for (i = 0; i < rx_ring->count; i++) { |
1da177e4 | 2115 | buffer_info = &rx_ring->buffer_info[i]; |
96838a40 | 2116 | if (buffer_info->skb) { |
1da177e4 LT |
2117 | pci_unmap_single(pdev, |
2118 | buffer_info->dma, | |
2119 | buffer_info->length, | |
2120 | PCI_DMA_FROMDEVICE); | |
2121 | ||
2122 | dev_kfree_skb(buffer_info->skb); | |
2123 | buffer_info->skb = NULL; | |
997f5cbd JK |
2124 | } |
2125 | ps_page = &rx_ring->ps_page[i]; | |
2126 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
2127 | for (j = 0; j < adapter->rx_ps_pages; j++) { | |
2128 | if (!ps_page->ps_page[j]) break; | |
2129 | pci_unmap_page(pdev, | |
2130 | ps_page_dma->ps_page_dma[j], | |
2131 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
2132 | ps_page_dma->ps_page_dma[j] = 0; | |
2133 | put_page(ps_page->ps_page[j]); | |
2134 | ps_page->ps_page[j] = NULL; | |
1da177e4 LT |
2135 | } |
2136 | } | |
2137 | ||
2138 | size = sizeof(struct e1000_buffer) * rx_ring->count; | |
2139 | memset(rx_ring->buffer_info, 0, size); | |
2d7edb92 MC |
2140 | size = sizeof(struct e1000_ps_page) * rx_ring->count; |
2141 | memset(rx_ring->ps_page, 0, size); | |
2142 | size = sizeof(struct e1000_ps_page_dma) * rx_ring->count; | |
2143 | memset(rx_ring->ps_page_dma, 0, size); | |
1da177e4 LT |
2144 | |
2145 | /* Zero out the descriptor ring */ | |
2146 | ||
2147 | memset(rx_ring->desc, 0, rx_ring->size); | |
2148 | ||
2149 | rx_ring->next_to_clean = 0; | |
2150 | rx_ring->next_to_use = 0; | |
2151 | ||
581d708e MC |
2152 | writel(0, adapter->hw.hw_addr + rx_ring->rdh); |
2153 | writel(0, adapter->hw.hw_addr + rx_ring->rdt); | |
2154 | } | |
2155 | ||
2156 | /** | |
2157 | * e1000_clean_all_rx_rings - Free Rx Buffers for all queues | |
2158 | * @adapter: board private structure | |
2159 | **/ | |
2160 | ||
2161 | static void | |
2162 | e1000_clean_all_rx_rings(struct e1000_adapter *adapter) | |
2163 | { | |
2164 | int i; | |
2165 | ||
f56799ea | 2166 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e | 2167 | e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]); |
1da177e4 LT |
2168 | } |
2169 | ||
2170 | /* The 82542 2.0 (revision 2) needs to have the receive unit in reset | |
2171 | * and memory write and invalidate disabled for certain operations | |
2172 | */ | |
2173 | static void | |
2174 | e1000_enter_82542_rst(struct e1000_adapter *adapter) | |
2175 | { | |
2176 | struct net_device *netdev = adapter->netdev; | |
2177 | uint32_t rctl; | |
2178 | ||
2179 | e1000_pci_clear_mwi(&adapter->hw); | |
2180 | ||
2181 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
2182 | rctl |= E1000_RCTL_RST; | |
2183 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2184 | E1000_WRITE_FLUSH(&adapter->hw); | |
2185 | mdelay(5); | |
2186 | ||
96838a40 | 2187 | if (netif_running(netdev)) |
581d708e | 2188 | e1000_clean_all_rx_rings(adapter); |
1da177e4 LT |
2189 | } |
2190 | ||
2191 | static void | |
2192 | e1000_leave_82542_rst(struct e1000_adapter *adapter) | |
2193 | { | |
2194 | struct net_device *netdev = adapter->netdev; | |
2195 | uint32_t rctl; | |
2196 | ||
2197 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
2198 | rctl &= ~E1000_RCTL_RST; | |
2199 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2200 | E1000_WRITE_FLUSH(&adapter->hw); | |
2201 | mdelay(5); | |
2202 | ||
96838a40 | 2203 | if (adapter->hw.pci_cmd_word & PCI_COMMAND_INVALIDATE) |
1da177e4 LT |
2204 | e1000_pci_set_mwi(&adapter->hw); |
2205 | ||
96838a40 | 2206 | if (netif_running(netdev)) { |
72d64a43 JK |
2207 | /* No need to loop, because 82542 supports only 1 queue */ |
2208 | struct e1000_rx_ring *ring = &adapter->rx_ring[0]; | |
7c4d3367 | 2209 | e1000_configure_rx(adapter); |
72d64a43 | 2210 | adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring)); |
1da177e4 LT |
2211 | } |
2212 | } | |
2213 | ||
2214 | /** | |
2215 | * e1000_set_mac - Change the Ethernet Address of the NIC | |
2216 | * @netdev: network interface device structure | |
2217 | * @p: pointer to an address structure | |
2218 | * | |
2219 | * Returns 0 on success, negative on failure | |
2220 | **/ | |
2221 | ||
2222 | static int | |
2223 | e1000_set_mac(struct net_device *netdev, void *p) | |
2224 | { | |
60490fe0 | 2225 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2226 | struct sockaddr *addr = p; |
2227 | ||
96838a40 | 2228 | if (!is_valid_ether_addr(addr->sa_data)) |
1da177e4 LT |
2229 | return -EADDRNOTAVAIL; |
2230 | ||
2231 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2232 | ||
96838a40 | 2233 | if (adapter->hw.mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2234 | e1000_enter_82542_rst(adapter); |
2235 | ||
2236 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
2237 | memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); | |
2238 | ||
2239 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0); | |
2240 | ||
868d5309 MC |
2241 | /* With 82571 controllers, LAA may be overwritten (with the default) |
2242 | * due to controller reset from the other port. */ | |
2243 | if (adapter->hw.mac_type == e1000_82571) { | |
2244 | /* activate the work around */ | |
2245 | adapter->hw.laa_is_present = 1; | |
2246 | ||
96838a40 JB |
2247 | /* Hold a copy of the LAA in RAR[14] This is done so that |
2248 | * between the time RAR[0] gets clobbered and the time it | |
2249 | * gets fixed (in e1000_watchdog), the actual LAA is in one | |
868d5309 | 2250 | * of the RARs and no incoming packets directed to this port |
96838a40 | 2251 | * are dropped. Eventaully the LAA will be in RAR[0] and |
868d5309 | 2252 | * RAR[14] */ |
96838a40 | 2253 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, |
868d5309 MC |
2254 | E1000_RAR_ENTRIES - 1); |
2255 | } | |
2256 | ||
96838a40 | 2257 | if (adapter->hw.mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2258 | e1000_leave_82542_rst(adapter); |
2259 | ||
2260 | return 0; | |
2261 | } | |
2262 | ||
2263 | /** | |
2264 | * e1000_set_multi - Multicast and Promiscuous mode set | |
2265 | * @netdev: network interface device structure | |
2266 | * | |
2267 | * The set_multi entry point is called whenever the multicast address | |
2268 | * list or the network interface flags are updated. This routine is | |
2269 | * responsible for configuring the hardware for proper multicast, | |
2270 | * promiscuous mode, and all-multi behavior. | |
2271 | **/ | |
2272 | ||
2273 | static void | |
2274 | e1000_set_multi(struct net_device *netdev) | |
2275 | { | |
60490fe0 | 2276 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2277 | struct e1000_hw *hw = &adapter->hw; |
2278 | struct dev_mc_list *mc_ptr; | |
2279 | uint32_t rctl; | |
2280 | uint32_t hash_value; | |
868d5309 | 2281 | int i, rar_entries = E1000_RAR_ENTRIES; |
cd94dd0b AK |
2282 | int mta_reg_count = (hw->mac_type == e1000_ich8lan) ? |
2283 | E1000_NUM_MTA_REGISTERS_ICH8LAN : | |
2284 | E1000_NUM_MTA_REGISTERS; | |
2285 | ||
2286 | if (adapter->hw.mac_type == e1000_ich8lan) | |
2287 | rar_entries = E1000_RAR_ENTRIES_ICH8LAN; | |
1da177e4 | 2288 | |
868d5309 MC |
2289 | /* reserve RAR[14] for LAA over-write work-around */ |
2290 | if (adapter->hw.mac_type == e1000_82571) | |
2291 | rar_entries--; | |
1da177e4 | 2292 | |
2648345f MC |
2293 | /* Check for Promiscuous and All Multicast modes */ |
2294 | ||
1da177e4 LT |
2295 | rctl = E1000_READ_REG(hw, RCTL); |
2296 | ||
96838a40 | 2297 | if (netdev->flags & IFF_PROMISC) { |
1da177e4 | 2298 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
96838a40 | 2299 | } else if (netdev->flags & IFF_ALLMULTI) { |
1da177e4 LT |
2300 | rctl |= E1000_RCTL_MPE; |
2301 | rctl &= ~E1000_RCTL_UPE; | |
2302 | } else { | |
2303 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); | |
2304 | } | |
2305 | ||
2306 | E1000_WRITE_REG(hw, RCTL, rctl); | |
2307 | ||
2308 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2309 | ||
96838a40 | 2310 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2311 | e1000_enter_82542_rst(adapter); |
2312 | ||
2313 | /* load the first 14 multicast address into the exact filters 1-14 | |
2314 | * RAR 0 is used for the station MAC adddress | |
2315 | * if there are not 14 addresses, go ahead and clear the filters | |
868d5309 | 2316 | * -- with 82571 controllers only 0-13 entries are filled here |
1da177e4 LT |
2317 | */ |
2318 | mc_ptr = netdev->mc_list; | |
2319 | ||
96838a40 | 2320 | for (i = 1; i < rar_entries; i++) { |
868d5309 | 2321 | if (mc_ptr) { |
1da177e4 LT |
2322 | e1000_rar_set(hw, mc_ptr->dmi_addr, i); |
2323 | mc_ptr = mc_ptr->next; | |
2324 | } else { | |
2325 | E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); | |
4ca213a6 | 2326 | E1000_WRITE_FLUSH(hw); |
1da177e4 | 2327 | E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); |
4ca213a6 | 2328 | E1000_WRITE_FLUSH(hw); |
1da177e4 LT |
2329 | } |
2330 | } | |
2331 | ||
2332 | /* clear the old settings from the multicast hash table */ | |
2333 | ||
cd94dd0b | 2334 | for (i = 0; i < mta_reg_count; i++) { |
1da177e4 | 2335 | E1000_WRITE_REG_ARRAY(hw, MTA, i, 0); |
4ca213a6 AK |
2336 | E1000_WRITE_FLUSH(hw); |
2337 | } | |
1da177e4 LT |
2338 | |
2339 | /* load any remaining addresses into the hash table */ | |
2340 | ||
96838a40 | 2341 | for (; mc_ptr; mc_ptr = mc_ptr->next) { |
1da177e4 LT |
2342 | hash_value = e1000_hash_mc_addr(hw, mc_ptr->dmi_addr); |
2343 | e1000_mta_set(hw, hash_value); | |
2344 | } | |
2345 | ||
96838a40 | 2346 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 | 2347 | e1000_leave_82542_rst(adapter); |
1da177e4 LT |
2348 | } |
2349 | ||
2350 | /* Need to wait a few seconds after link up to get diagnostic information from | |
2351 | * the phy */ | |
2352 | ||
2353 | static void | |
2354 | e1000_update_phy_info(unsigned long data) | |
2355 | { | |
2356 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
2357 | e1000_phy_get_info(&adapter->hw, &adapter->phy_info); | |
2358 | } | |
2359 | ||
2360 | /** | |
2361 | * e1000_82547_tx_fifo_stall - Timer Call-back | |
2362 | * @data: pointer to adapter cast into an unsigned long | |
2363 | **/ | |
2364 | ||
2365 | static void | |
2366 | e1000_82547_tx_fifo_stall(unsigned long data) | |
2367 | { | |
2368 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
2369 | struct net_device *netdev = adapter->netdev; | |
2370 | uint32_t tctl; | |
2371 | ||
96838a40 JB |
2372 | if (atomic_read(&adapter->tx_fifo_stall)) { |
2373 | if ((E1000_READ_REG(&adapter->hw, TDT) == | |
1da177e4 LT |
2374 | E1000_READ_REG(&adapter->hw, TDH)) && |
2375 | (E1000_READ_REG(&adapter->hw, TDFT) == | |
2376 | E1000_READ_REG(&adapter->hw, TDFH)) && | |
2377 | (E1000_READ_REG(&adapter->hw, TDFTS) == | |
2378 | E1000_READ_REG(&adapter->hw, TDFHS))) { | |
2379 | tctl = E1000_READ_REG(&adapter->hw, TCTL); | |
2380 | E1000_WRITE_REG(&adapter->hw, TCTL, | |
2381 | tctl & ~E1000_TCTL_EN); | |
2382 | E1000_WRITE_REG(&adapter->hw, TDFT, | |
2383 | adapter->tx_head_addr); | |
2384 | E1000_WRITE_REG(&adapter->hw, TDFH, | |
2385 | adapter->tx_head_addr); | |
2386 | E1000_WRITE_REG(&adapter->hw, TDFTS, | |
2387 | adapter->tx_head_addr); | |
2388 | E1000_WRITE_REG(&adapter->hw, TDFHS, | |
2389 | adapter->tx_head_addr); | |
2390 | E1000_WRITE_REG(&adapter->hw, TCTL, tctl); | |
2391 | E1000_WRITE_FLUSH(&adapter->hw); | |
2392 | ||
2393 | adapter->tx_fifo_head = 0; | |
2394 | atomic_set(&adapter->tx_fifo_stall, 0); | |
2395 | netif_wake_queue(netdev); | |
2396 | } else { | |
2397 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); | |
2398 | } | |
2399 | } | |
2400 | } | |
2401 | ||
2402 | /** | |
2403 | * e1000_watchdog - Timer Call-back | |
2404 | * @data: pointer to adapter cast into an unsigned long | |
2405 | **/ | |
2406 | static void | |
2407 | e1000_watchdog(unsigned long data) | |
2408 | { | |
2409 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
1da177e4 | 2410 | struct net_device *netdev = adapter->netdev; |
545c67c0 | 2411 | struct e1000_tx_ring *txdr = adapter->tx_ring; |
7e6c9861 | 2412 | uint32_t link, tctl; |
cd94dd0b AK |
2413 | int32_t ret_val; |
2414 | ||
2415 | ret_val = e1000_check_for_link(&adapter->hw); | |
2416 | if ((ret_val == E1000_ERR_PHY) && | |
2417 | (adapter->hw.phy_type == e1000_phy_igp_3) && | |
2418 | (E1000_READ_REG(&adapter->hw, CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) { | |
2419 | /* See e1000_kumeran_lock_loss_workaround() */ | |
2420 | DPRINTK(LINK, INFO, | |
2421 | "Gigabit has been disabled, downgrading speed\n"); | |
2422 | } | |
90fb5135 | 2423 | |
2d7edb92 MC |
2424 | if (adapter->hw.mac_type == e1000_82573) { |
2425 | e1000_enable_tx_pkt_filtering(&adapter->hw); | |
96838a40 | 2426 | if (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id) |
2d7edb92 | 2427 | e1000_update_mng_vlan(adapter); |
96838a40 | 2428 | } |
1da177e4 | 2429 | |
96838a40 | 2430 | if ((adapter->hw.media_type == e1000_media_type_internal_serdes) && |
1da177e4 LT |
2431 | !(E1000_READ_REG(&adapter->hw, TXCW) & E1000_TXCW_ANE)) |
2432 | link = !adapter->hw.serdes_link_down; | |
2433 | else | |
2434 | link = E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU; | |
2435 | ||
96838a40 JB |
2436 | if (link) { |
2437 | if (!netif_carrier_ok(netdev)) { | |
fe7fe28e | 2438 | boolean_t txb2b = 1; |
1da177e4 LT |
2439 | e1000_get_speed_and_duplex(&adapter->hw, |
2440 | &adapter->link_speed, | |
2441 | &adapter->link_duplex); | |
2442 | ||
2443 | DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s\n", | |
2444 | adapter->link_speed, | |
2445 | adapter->link_duplex == FULL_DUPLEX ? | |
2446 | "Full Duplex" : "Half Duplex"); | |
2447 | ||
7e6c9861 JK |
2448 | /* tweak tx_queue_len according to speed/duplex |
2449 | * and adjust the timeout factor */ | |
66a2b0a3 JK |
2450 | netdev->tx_queue_len = adapter->tx_queue_len; |
2451 | adapter->tx_timeout_factor = 1; | |
7e6c9861 JK |
2452 | switch (adapter->link_speed) { |
2453 | case SPEED_10: | |
fe7fe28e | 2454 | txb2b = 0; |
7e6c9861 JK |
2455 | netdev->tx_queue_len = 10; |
2456 | adapter->tx_timeout_factor = 8; | |
2457 | break; | |
2458 | case SPEED_100: | |
fe7fe28e | 2459 | txb2b = 0; |
7e6c9861 JK |
2460 | netdev->tx_queue_len = 100; |
2461 | /* maybe add some timeout factor ? */ | |
2462 | break; | |
2463 | } | |
2464 | ||
fe7fe28e | 2465 | if ((adapter->hw.mac_type == e1000_82571 || |
7e6c9861 | 2466 | adapter->hw.mac_type == e1000_82572) && |
fe7fe28e | 2467 | txb2b == 0) { |
7e6c9861 JK |
2468 | uint32_t tarc0; |
2469 | tarc0 = E1000_READ_REG(&adapter->hw, TARC0); | |
90fb5135 | 2470 | tarc0 &= ~(1 << 21); |
7e6c9861 JK |
2471 | E1000_WRITE_REG(&adapter->hw, TARC0, tarc0); |
2472 | } | |
90fb5135 | 2473 | |
7e6c9861 JK |
2474 | #ifdef NETIF_F_TSO |
2475 | /* disable TSO for pcie and 10/100 speeds, to avoid | |
2476 | * some hardware issues */ | |
2477 | if (!adapter->tso_force && | |
2478 | adapter->hw.bus_type == e1000_bus_type_pci_express){ | |
66a2b0a3 JK |
2479 | switch (adapter->link_speed) { |
2480 | case SPEED_10: | |
66a2b0a3 | 2481 | case SPEED_100: |
7e6c9861 JK |
2482 | DPRINTK(PROBE,INFO, |
2483 | "10/100 speed: disabling TSO\n"); | |
2484 | netdev->features &= ~NETIF_F_TSO; | |
87ca4e5b AK |
2485 | #ifdef NETIF_F_TSO6 |
2486 | netdev->features &= ~NETIF_F_TSO6; | |
2487 | #endif | |
7e6c9861 JK |
2488 | break; |
2489 | case SPEED_1000: | |
2490 | netdev->features |= NETIF_F_TSO; | |
87ca4e5b AK |
2491 | #ifdef NETIF_F_TSO6 |
2492 | netdev->features |= NETIF_F_TSO6; | |
2493 | #endif | |
7e6c9861 JK |
2494 | break; |
2495 | default: | |
2496 | /* oops */ | |
66a2b0a3 JK |
2497 | break; |
2498 | } | |
2499 | } | |
7e6c9861 JK |
2500 | #endif |
2501 | ||
2502 | /* enable transmits in the hardware, need to do this | |
2503 | * after setting TARC0 */ | |
2504 | tctl = E1000_READ_REG(&adapter->hw, TCTL); | |
2505 | tctl |= E1000_TCTL_EN; | |
2506 | E1000_WRITE_REG(&adapter->hw, TCTL, tctl); | |
66a2b0a3 | 2507 | |
1da177e4 LT |
2508 | netif_carrier_on(netdev); |
2509 | netif_wake_queue(netdev); | |
2510 | mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ); | |
2511 | adapter->smartspeed = 0; | |
2512 | } | |
2513 | } else { | |
96838a40 | 2514 | if (netif_carrier_ok(netdev)) { |
1da177e4 LT |
2515 | adapter->link_speed = 0; |
2516 | adapter->link_duplex = 0; | |
2517 | DPRINTK(LINK, INFO, "NIC Link is Down\n"); | |
2518 | netif_carrier_off(netdev); | |
2519 | netif_stop_queue(netdev); | |
2520 | mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ); | |
87041639 JK |
2521 | |
2522 | /* 80003ES2LAN workaround-- | |
2523 | * For packet buffer work-around on link down event; | |
2524 | * disable receives in the ISR and | |
2525 | * reset device here in the watchdog | |
2526 | */ | |
8fc897b0 | 2527 | if (adapter->hw.mac_type == e1000_80003es2lan) |
87041639 JK |
2528 | /* reset device */ |
2529 | schedule_work(&adapter->reset_task); | |
1da177e4 LT |
2530 | } |
2531 | ||
2532 | e1000_smartspeed(adapter); | |
2533 | } | |
2534 | ||
2535 | e1000_update_stats(adapter); | |
2536 | ||
2537 | adapter->hw.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; | |
2538 | adapter->tpt_old = adapter->stats.tpt; | |
2539 | adapter->hw.collision_delta = adapter->stats.colc - adapter->colc_old; | |
2540 | adapter->colc_old = adapter->stats.colc; | |
2541 | ||
2542 | adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; | |
2543 | adapter->gorcl_old = adapter->stats.gorcl; | |
2544 | adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; | |
2545 | adapter->gotcl_old = adapter->stats.gotcl; | |
2546 | ||
2547 | e1000_update_adaptive(&adapter->hw); | |
2548 | ||
f56799ea | 2549 | if (!netif_carrier_ok(netdev)) { |
581d708e | 2550 | if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { |
1da177e4 LT |
2551 | /* We've lost link, so the controller stops DMA, |
2552 | * but we've got queued Tx work that's never going | |
2553 | * to get done, so reset controller to flush Tx. | |
2554 | * (Do the reset outside of interrupt context). */ | |
87041639 JK |
2555 | adapter->tx_timeout_count++; |
2556 | schedule_work(&adapter->reset_task); | |
1da177e4 LT |
2557 | } |
2558 | } | |
2559 | ||
2560 | /* Dynamic mode for Interrupt Throttle Rate (ITR) */ | |
96838a40 | 2561 | if (adapter->hw.mac_type >= e1000_82540 && adapter->itr == 1) { |
1da177e4 LT |
2562 | /* Symmetric Tx/Rx gets a reduced ITR=2000; Total |
2563 | * asymmetrical Tx or Rx gets ITR=8000; everyone | |
2564 | * else is between 2000-8000. */ | |
2565 | uint32_t goc = (adapter->gotcl + adapter->gorcl) / 10000; | |
96838a40 | 2566 | uint32_t dif = (adapter->gotcl > adapter->gorcl ? |
1da177e4 LT |
2567 | adapter->gotcl - adapter->gorcl : |
2568 | adapter->gorcl - adapter->gotcl) / 10000; | |
2569 | uint32_t itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; | |
2570 | E1000_WRITE_REG(&adapter->hw, ITR, 1000000000 / (itr * 256)); | |
2571 | } | |
2572 | ||
2573 | /* Cause software interrupt to ensure rx ring is cleaned */ | |
2574 | E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_RXDMT0); | |
2575 | ||
2648345f | 2576 | /* Force detection of hung controller every watchdog period */ |
1da177e4 LT |
2577 | adapter->detect_tx_hung = TRUE; |
2578 | ||
96838a40 | 2579 | /* With 82571 controllers, LAA may be overwritten due to controller |
868d5309 MC |
2580 | * reset from the other port. Set the appropriate LAA in RAR[0] */ |
2581 | if (adapter->hw.mac_type == e1000_82571 && adapter->hw.laa_is_present) | |
2582 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0); | |
2583 | ||
1da177e4 LT |
2584 | /* Reset the timer */ |
2585 | mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ); | |
2586 | } | |
2587 | ||
2588 | #define E1000_TX_FLAGS_CSUM 0x00000001 | |
2589 | #define E1000_TX_FLAGS_VLAN 0x00000002 | |
2590 | #define E1000_TX_FLAGS_TSO 0x00000004 | |
2d7edb92 | 2591 | #define E1000_TX_FLAGS_IPV4 0x00000008 |
1da177e4 LT |
2592 | #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
2593 | #define E1000_TX_FLAGS_VLAN_SHIFT 16 | |
2594 | ||
e619d523 | 2595 | static int |
581d708e MC |
2596 | e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2597 | struct sk_buff *skb) | |
1da177e4 LT |
2598 | { |
2599 | #ifdef NETIF_F_TSO | |
2600 | struct e1000_context_desc *context_desc; | |
545c67c0 | 2601 | struct e1000_buffer *buffer_info; |
1da177e4 LT |
2602 | unsigned int i; |
2603 | uint32_t cmd_length = 0; | |
2d7edb92 | 2604 | uint16_t ipcse = 0, tucse, mss; |
1da177e4 LT |
2605 | uint8_t ipcss, ipcso, tucss, tucso, hdr_len; |
2606 | int err; | |
2607 | ||
89114afd | 2608 | if (skb_is_gso(skb)) { |
1da177e4 LT |
2609 | if (skb_header_cloned(skb)) { |
2610 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
2611 | if (err) | |
2612 | return err; | |
2613 | } | |
2614 | ||
2615 | hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2)); | |
7967168c | 2616 | mss = skb_shinfo(skb)->gso_size; |
60828236 | 2617 | if (skb->protocol == htons(ETH_P_IP)) { |
2d7edb92 MC |
2618 | skb->nh.iph->tot_len = 0; |
2619 | skb->nh.iph->check = 0; | |
2620 | skb->h.th->check = | |
2621 | ~csum_tcpudp_magic(skb->nh.iph->saddr, | |
2622 | skb->nh.iph->daddr, | |
2623 | 0, | |
2624 | IPPROTO_TCP, | |
2625 | 0); | |
2626 | cmd_length = E1000_TXD_CMD_IP; | |
2627 | ipcse = skb->h.raw - skb->data - 1; | |
87ca4e5b | 2628 | #ifdef NETIF_F_TSO6 |
e15fdd03 | 2629 | } else if (skb->protocol == htons(ETH_P_IPV6)) { |
2d7edb92 MC |
2630 | skb->nh.ipv6h->payload_len = 0; |
2631 | skb->h.th->check = | |
2632 | ~csum_ipv6_magic(&skb->nh.ipv6h->saddr, | |
2633 | &skb->nh.ipv6h->daddr, | |
2634 | 0, | |
2635 | IPPROTO_TCP, | |
2636 | 0); | |
2637 | ipcse = 0; | |
2638 | #endif | |
2639 | } | |
1da177e4 LT |
2640 | ipcss = skb->nh.raw - skb->data; |
2641 | ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data; | |
1da177e4 LT |
2642 | tucss = skb->h.raw - skb->data; |
2643 | tucso = (void *)&(skb->h.th->check) - (void *)skb->data; | |
2644 | tucse = 0; | |
2645 | ||
2646 | cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | | |
2d7edb92 | 2647 | E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
1da177e4 | 2648 | |
581d708e MC |
2649 | i = tx_ring->next_to_use; |
2650 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
545c67c0 | 2651 | buffer_info = &tx_ring->buffer_info[i]; |
1da177e4 LT |
2652 | |
2653 | context_desc->lower_setup.ip_fields.ipcss = ipcss; | |
2654 | context_desc->lower_setup.ip_fields.ipcso = ipcso; | |
2655 | context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); | |
2656 | context_desc->upper_setup.tcp_fields.tucss = tucss; | |
2657 | context_desc->upper_setup.tcp_fields.tucso = tucso; | |
2658 | context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); | |
2659 | context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); | |
2660 | context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; | |
2661 | context_desc->cmd_and_length = cpu_to_le32(cmd_length); | |
2662 | ||
545c67c0 JK |
2663 | buffer_info->time_stamp = jiffies; |
2664 | ||
581d708e MC |
2665 | if (++i == tx_ring->count) i = 0; |
2666 | tx_ring->next_to_use = i; | |
1da177e4 | 2667 | |
8241e35e | 2668 | return TRUE; |
1da177e4 LT |
2669 | } |
2670 | #endif | |
2671 | ||
8241e35e | 2672 | return FALSE; |
1da177e4 LT |
2673 | } |
2674 | ||
e619d523 | 2675 | static boolean_t |
581d708e MC |
2676 | e1000_tx_csum(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2677 | struct sk_buff *skb) | |
1da177e4 LT |
2678 | { |
2679 | struct e1000_context_desc *context_desc; | |
545c67c0 | 2680 | struct e1000_buffer *buffer_info; |
1da177e4 LT |
2681 | unsigned int i; |
2682 | uint8_t css; | |
2683 | ||
84fa7933 | 2684 | if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { |
1da177e4 LT |
2685 | css = skb->h.raw - skb->data; |
2686 | ||
581d708e | 2687 | i = tx_ring->next_to_use; |
545c67c0 | 2688 | buffer_info = &tx_ring->buffer_info[i]; |
581d708e | 2689 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
1da177e4 LT |
2690 | |
2691 | context_desc->upper_setup.tcp_fields.tucss = css; | |
2692 | context_desc->upper_setup.tcp_fields.tucso = css + skb->csum; | |
2693 | context_desc->upper_setup.tcp_fields.tucse = 0; | |
2694 | context_desc->tcp_seg_setup.data = 0; | |
2695 | context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT); | |
2696 | ||
545c67c0 JK |
2697 | buffer_info->time_stamp = jiffies; |
2698 | ||
581d708e MC |
2699 | if (unlikely(++i == tx_ring->count)) i = 0; |
2700 | tx_ring->next_to_use = i; | |
1da177e4 LT |
2701 | |
2702 | return TRUE; | |
2703 | } | |
2704 | ||
2705 | return FALSE; | |
2706 | } | |
2707 | ||
2708 | #define E1000_MAX_TXD_PWR 12 | |
2709 | #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) | |
2710 | ||
e619d523 | 2711 | static int |
581d708e MC |
2712 | e1000_tx_map(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2713 | struct sk_buff *skb, unsigned int first, unsigned int max_per_txd, | |
2714 | unsigned int nr_frags, unsigned int mss) | |
1da177e4 | 2715 | { |
1da177e4 LT |
2716 | struct e1000_buffer *buffer_info; |
2717 | unsigned int len = skb->len; | |
2718 | unsigned int offset = 0, size, count = 0, i; | |
2719 | unsigned int f; | |
2720 | len -= skb->data_len; | |
2721 | ||
2722 | i = tx_ring->next_to_use; | |
2723 | ||
96838a40 | 2724 | while (len) { |
1da177e4 LT |
2725 | buffer_info = &tx_ring->buffer_info[i]; |
2726 | size = min(len, max_per_txd); | |
2727 | #ifdef NETIF_F_TSO | |
fd803241 JK |
2728 | /* Workaround for Controller erratum -- |
2729 | * descriptor for non-tso packet in a linear SKB that follows a | |
2730 | * tso gets written back prematurely before the data is fully | |
0f15a8fa | 2731 | * DMA'd to the controller */ |
fd803241 | 2732 | if (!skb->data_len && tx_ring->last_tx_tso && |
89114afd | 2733 | !skb_is_gso(skb)) { |
fd803241 JK |
2734 | tx_ring->last_tx_tso = 0; |
2735 | size -= 4; | |
2736 | } | |
2737 | ||
1da177e4 LT |
2738 | /* Workaround for premature desc write-backs |
2739 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 2740 | if (unlikely(mss && !nr_frags && size == len && size > 8)) |
1da177e4 LT |
2741 | size -= 4; |
2742 | #endif | |
97338bde MC |
2743 | /* work-around for errata 10 and it applies |
2744 | * to all controllers in PCI-X mode | |
2745 | * The fix is to make sure that the first descriptor of a | |
2746 | * packet is smaller than 2048 - 16 - 16 (or 2016) bytes | |
2747 | */ | |
96838a40 | 2748 | if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && |
97338bde MC |
2749 | (size > 2015) && count == 0)) |
2750 | size = 2015; | |
96838a40 | 2751 | |
1da177e4 LT |
2752 | /* Workaround for potential 82544 hang in PCI-X. Avoid |
2753 | * terminating buffers within evenly-aligned dwords. */ | |
96838a40 | 2754 | if (unlikely(adapter->pcix_82544 && |
1da177e4 LT |
2755 | !((unsigned long)(skb->data + offset + size - 1) & 4) && |
2756 | size > 4)) | |
2757 | size -= 4; | |
2758 | ||
2759 | buffer_info->length = size; | |
2760 | buffer_info->dma = | |
2761 | pci_map_single(adapter->pdev, | |
2762 | skb->data + offset, | |
2763 | size, | |
2764 | PCI_DMA_TODEVICE); | |
2765 | buffer_info->time_stamp = jiffies; | |
2766 | ||
2767 | len -= size; | |
2768 | offset += size; | |
2769 | count++; | |
96838a40 | 2770 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
2771 | } |
2772 | ||
96838a40 | 2773 | for (f = 0; f < nr_frags; f++) { |
1da177e4 LT |
2774 | struct skb_frag_struct *frag; |
2775 | ||
2776 | frag = &skb_shinfo(skb)->frags[f]; | |
2777 | len = frag->size; | |
2778 | offset = frag->page_offset; | |
2779 | ||
96838a40 | 2780 | while (len) { |
1da177e4 LT |
2781 | buffer_info = &tx_ring->buffer_info[i]; |
2782 | size = min(len, max_per_txd); | |
2783 | #ifdef NETIF_F_TSO | |
2784 | /* Workaround for premature desc write-backs | |
2785 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 2786 | if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) |
1da177e4 LT |
2787 | size -= 4; |
2788 | #endif | |
2789 | /* Workaround for potential 82544 hang in PCI-X. | |
2790 | * Avoid terminating buffers within evenly-aligned | |
2791 | * dwords. */ | |
96838a40 | 2792 | if (unlikely(adapter->pcix_82544 && |
1da177e4 LT |
2793 | !((unsigned long)(frag->page+offset+size-1) & 4) && |
2794 | size > 4)) | |
2795 | size -= 4; | |
2796 | ||
2797 | buffer_info->length = size; | |
2798 | buffer_info->dma = | |
2799 | pci_map_page(adapter->pdev, | |
2800 | frag->page, | |
2801 | offset, | |
2802 | size, | |
2803 | PCI_DMA_TODEVICE); | |
2804 | buffer_info->time_stamp = jiffies; | |
2805 | ||
2806 | len -= size; | |
2807 | offset += size; | |
2808 | count++; | |
96838a40 | 2809 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
2810 | } |
2811 | } | |
2812 | ||
2813 | i = (i == 0) ? tx_ring->count - 1 : i - 1; | |
2814 | tx_ring->buffer_info[i].skb = skb; | |
2815 | tx_ring->buffer_info[first].next_to_watch = i; | |
2816 | ||
2817 | return count; | |
2818 | } | |
2819 | ||
e619d523 | 2820 | static void |
581d708e MC |
2821 | e1000_tx_queue(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2822 | int tx_flags, int count) | |
1da177e4 | 2823 | { |
1da177e4 LT |
2824 | struct e1000_tx_desc *tx_desc = NULL; |
2825 | struct e1000_buffer *buffer_info; | |
2826 | uint32_t txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; | |
2827 | unsigned int i; | |
2828 | ||
96838a40 | 2829 | if (likely(tx_flags & E1000_TX_FLAGS_TSO)) { |
1da177e4 LT |
2830 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
2831 | E1000_TXD_CMD_TSE; | |
2d7edb92 MC |
2832 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
2833 | ||
96838a40 | 2834 | if (likely(tx_flags & E1000_TX_FLAGS_IPV4)) |
2d7edb92 | 2835 | txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
1da177e4 LT |
2836 | } |
2837 | ||
96838a40 | 2838 | if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) { |
1da177e4 LT |
2839 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
2840 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
2841 | } | |
2842 | ||
96838a40 | 2843 | if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { |
1da177e4 LT |
2844 | txd_lower |= E1000_TXD_CMD_VLE; |
2845 | txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); | |
2846 | } | |
2847 | ||
2848 | i = tx_ring->next_to_use; | |
2849 | ||
96838a40 | 2850 | while (count--) { |
1da177e4 LT |
2851 | buffer_info = &tx_ring->buffer_info[i]; |
2852 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
2853 | tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
2854 | tx_desc->lower.data = | |
2855 | cpu_to_le32(txd_lower | buffer_info->length); | |
2856 | tx_desc->upper.data = cpu_to_le32(txd_upper); | |
96838a40 | 2857 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
2858 | } |
2859 | ||
2860 | tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); | |
2861 | ||
2862 | /* Force memory writes to complete before letting h/w | |
2863 | * know there are new descriptors to fetch. (Only | |
2864 | * applicable for weak-ordered memory model archs, | |
2865 | * such as IA-64). */ | |
2866 | wmb(); | |
2867 | ||
2868 | tx_ring->next_to_use = i; | |
581d708e | 2869 | writel(i, adapter->hw.hw_addr + tx_ring->tdt); |
1da177e4 LT |
2870 | } |
2871 | ||
2872 | /** | |
2873 | * 82547 workaround to avoid controller hang in half-duplex environment. | |
2874 | * The workaround is to avoid queuing a large packet that would span | |
2875 | * the internal Tx FIFO ring boundary by notifying the stack to resend | |
2876 | * the packet at a later time. This gives the Tx FIFO an opportunity to | |
2877 | * flush all packets. When that occurs, we reset the Tx FIFO pointers | |
2878 | * to the beginning of the Tx FIFO. | |
2879 | **/ | |
2880 | ||
2881 | #define E1000_FIFO_HDR 0x10 | |
2882 | #define E1000_82547_PAD_LEN 0x3E0 | |
2883 | ||
e619d523 | 2884 | static int |
1da177e4 LT |
2885 | e1000_82547_fifo_workaround(struct e1000_adapter *adapter, struct sk_buff *skb) |
2886 | { | |
2887 | uint32_t fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; | |
2888 | uint32_t skb_fifo_len = skb->len + E1000_FIFO_HDR; | |
2889 | ||
2890 | E1000_ROUNDUP(skb_fifo_len, E1000_FIFO_HDR); | |
2891 | ||
96838a40 | 2892 | if (adapter->link_duplex != HALF_DUPLEX) |
1da177e4 LT |
2893 | goto no_fifo_stall_required; |
2894 | ||
96838a40 | 2895 | if (atomic_read(&adapter->tx_fifo_stall)) |
1da177e4 LT |
2896 | return 1; |
2897 | ||
96838a40 | 2898 | if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { |
1da177e4 LT |
2899 | atomic_set(&adapter->tx_fifo_stall, 1); |
2900 | return 1; | |
2901 | } | |
2902 | ||
2903 | no_fifo_stall_required: | |
2904 | adapter->tx_fifo_head += skb_fifo_len; | |
96838a40 | 2905 | if (adapter->tx_fifo_head >= adapter->tx_fifo_size) |
1da177e4 LT |
2906 | adapter->tx_fifo_head -= adapter->tx_fifo_size; |
2907 | return 0; | |
2908 | } | |
2909 | ||
2d7edb92 | 2910 | #define MINIMUM_DHCP_PACKET_SIZE 282 |
e619d523 | 2911 | static int |
2d7edb92 MC |
2912 | e1000_transfer_dhcp_info(struct e1000_adapter *adapter, struct sk_buff *skb) |
2913 | { | |
2914 | struct e1000_hw *hw = &adapter->hw; | |
2915 | uint16_t length, offset; | |
96838a40 JB |
2916 | if (vlan_tx_tag_present(skb)) { |
2917 | if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) && | |
2d7edb92 MC |
2918 | ( adapter->hw.mng_cookie.status & |
2919 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) ) | |
2920 | return 0; | |
2921 | } | |
20a44028 | 2922 | if (skb->len > MINIMUM_DHCP_PACKET_SIZE) { |
2d7edb92 | 2923 | struct ethhdr *eth = (struct ethhdr *) skb->data; |
96838a40 JB |
2924 | if ((htons(ETH_P_IP) == eth->h_proto)) { |
2925 | const struct iphdr *ip = | |
2d7edb92 | 2926 | (struct iphdr *)((uint8_t *)skb->data+14); |
96838a40 JB |
2927 | if (IPPROTO_UDP == ip->protocol) { |
2928 | struct udphdr *udp = | |
2929 | (struct udphdr *)((uint8_t *)ip + | |
2d7edb92 | 2930 | (ip->ihl << 2)); |
96838a40 | 2931 | if (ntohs(udp->dest) == 67) { |
2d7edb92 MC |
2932 | offset = (uint8_t *)udp + 8 - skb->data; |
2933 | length = skb->len - offset; | |
2934 | ||
2935 | return e1000_mng_write_dhcp_info(hw, | |
96838a40 | 2936 | (uint8_t *)udp + 8, |
2d7edb92 MC |
2937 | length); |
2938 | } | |
2939 | } | |
2940 | } | |
2941 | } | |
2942 | return 0; | |
2943 | } | |
2944 | ||
65c7973f JB |
2945 | static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) |
2946 | { | |
2947 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2948 | struct e1000_tx_ring *tx_ring = adapter->tx_ring; | |
2949 | ||
2950 | netif_stop_queue(netdev); | |
2951 | /* Herbert's original patch had: | |
2952 | * smp_mb__after_netif_stop_queue(); | |
2953 | * but since that doesn't exist yet, just open code it. */ | |
2954 | smp_mb(); | |
2955 | ||
2956 | /* We need to check again in a case another CPU has just | |
2957 | * made room available. */ | |
2958 | if (likely(E1000_DESC_UNUSED(tx_ring) < size)) | |
2959 | return -EBUSY; | |
2960 | ||
2961 | /* A reprieve! */ | |
2962 | netif_start_queue(netdev); | |
2963 | return 0; | |
2964 | } | |
2965 | ||
2966 | static int e1000_maybe_stop_tx(struct net_device *netdev, | |
2967 | struct e1000_tx_ring *tx_ring, int size) | |
2968 | { | |
2969 | if (likely(E1000_DESC_UNUSED(tx_ring) >= size)) | |
2970 | return 0; | |
2971 | return __e1000_maybe_stop_tx(netdev, size); | |
2972 | } | |
2973 | ||
1da177e4 LT |
2974 | #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
2975 | static int | |
2976 | e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
2977 | { | |
60490fe0 | 2978 | struct e1000_adapter *adapter = netdev_priv(netdev); |
581d708e | 2979 | struct e1000_tx_ring *tx_ring; |
1da177e4 LT |
2980 | unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; |
2981 | unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; | |
2982 | unsigned int tx_flags = 0; | |
2983 | unsigned int len = skb->len; | |
2984 | unsigned long flags; | |
2985 | unsigned int nr_frags = 0; | |
2986 | unsigned int mss = 0; | |
2987 | int count = 0; | |
76c224bc | 2988 | int tso; |
1da177e4 LT |
2989 | unsigned int f; |
2990 | len -= skb->data_len; | |
2991 | ||
65c7973f JB |
2992 | /* This goes back to the question of how to logically map a tx queue |
2993 | * to a flow. Right now, performance is impacted slightly negatively | |
2994 | * if using multiple tx queues. If the stack breaks away from a | |
2995 | * single qdisc implementation, we can look at this again. */ | |
581d708e | 2996 | tx_ring = adapter->tx_ring; |
24025e4e | 2997 | |
581d708e | 2998 | if (unlikely(skb->len <= 0)) { |
1da177e4 LT |
2999 | dev_kfree_skb_any(skb); |
3000 | return NETDEV_TX_OK; | |
3001 | } | |
3002 | ||
032fe6e9 JB |
3003 | /* 82571 and newer doesn't need the workaround that limited descriptor |
3004 | * length to 4kB */ | |
3005 | if (adapter->hw.mac_type >= e1000_82571) | |
3006 | max_per_txd = 8192; | |
3007 | ||
1da177e4 | 3008 | #ifdef NETIF_F_TSO |
7967168c | 3009 | mss = skb_shinfo(skb)->gso_size; |
76c224bc | 3010 | /* The controller does a simple calculation to |
1da177e4 LT |
3011 | * make sure there is enough room in the FIFO before |
3012 | * initiating the DMA for each buffer. The calc is: | |
3013 | * 4 = ceil(buffer len/mss). To make sure we don't | |
3014 | * overrun the FIFO, adjust the max buffer len if mss | |
3015 | * drops. */ | |
96838a40 | 3016 | if (mss) { |
9a3056da | 3017 | uint8_t hdr_len; |
1da177e4 LT |
3018 | max_per_txd = min(mss << 2, max_per_txd); |
3019 | max_txd_pwr = fls(max_per_txd) - 1; | |
9a3056da | 3020 | |
90fb5135 AK |
3021 | /* TSO Workaround for 82571/2/3 Controllers -- if skb->data |
3022 | * points to just header, pull a few bytes of payload from | |
3023 | * frags into skb->data */ | |
9a3056da | 3024 | hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2)); |
9f687888 JK |
3025 | if (skb->data_len && (hdr_len == (skb->len - skb->data_len))) { |
3026 | switch (adapter->hw.mac_type) { | |
3027 | unsigned int pull_size; | |
3028 | case e1000_82571: | |
3029 | case e1000_82572: | |
3030 | case e1000_82573: | |
cd94dd0b | 3031 | case e1000_ich8lan: |
9f687888 JK |
3032 | pull_size = min((unsigned int)4, skb->data_len); |
3033 | if (!__pskb_pull_tail(skb, pull_size)) { | |
a5eafce2 | 3034 | DPRINTK(DRV, ERR, |
9f687888 JK |
3035 | "__pskb_pull_tail failed.\n"); |
3036 | dev_kfree_skb_any(skb); | |
749dfc70 | 3037 | return NETDEV_TX_OK; |
9f687888 JK |
3038 | } |
3039 | len = skb->len - skb->data_len; | |
3040 | break; | |
3041 | default: | |
3042 | /* do nothing */ | |
3043 | break; | |
d74bbd3b | 3044 | } |
9a3056da | 3045 | } |
1da177e4 LT |
3046 | } |
3047 | ||
9a3056da | 3048 | /* reserve a descriptor for the offload context */ |
84fa7933 | 3049 | if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
1da177e4 | 3050 | count++; |
2648345f | 3051 | count++; |
1da177e4 | 3052 | #else |
84fa7933 | 3053 | if (skb->ip_summed == CHECKSUM_PARTIAL) |
1da177e4 LT |
3054 | count++; |
3055 | #endif | |
fd803241 JK |
3056 | |
3057 | #ifdef NETIF_F_TSO | |
3058 | /* Controller Erratum workaround */ | |
89114afd | 3059 | if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb)) |
fd803241 JK |
3060 | count++; |
3061 | #endif | |
3062 | ||
1da177e4 LT |
3063 | count += TXD_USE_COUNT(len, max_txd_pwr); |
3064 | ||
96838a40 | 3065 | if (adapter->pcix_82544) |
1da177e4 LT |
3066 | count++; |
3067 | ||
96838a40 | 3068 | /* work-around for errata 10 and it applies to all controllers |
97338bde MC |
3069 | * in PCI-X mode, so add one more descriptor to the count |
3070 | */ | |
96838a40 | 3071 | if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && |
97338bde MC |
3072 | (len > 2015))) |
3073 | count++; | |
3074 | ||
1da177e4 | 3075 | nr_frags = skb_shinfo(skb)->nr_frags; |
96838a40 | 3076 | for (f = 0; f < nr_frags; f++) |
1da177e4 LT |
3077 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, |
3078 | max_txd_pwr); | |
96838a40 | 3079 | if (adapter->pcix_82544) |
1da177e4 LT |
3080 | count += nr_frags; |
3081 | ||
0f15a8fa JK |
3082 | |
3083 | if (adapter->hw.tx_pkt_filtering && | |
3084 | (adapter->hw.mac_type == e1000_82573)) | |
2d7edb92 MC |
3085 | e1000_transfer_dhcp_info(adapter, skb); |
3086 | ||
581d708e MC |
3087 | local_irq_save(flags); |
3088 | if (!spin_trylock(&tx_ring->tx_lock)) { | |
3089 | /* Collision - tell upper layer to requeue */ | |
3090 | local_irq_restore(flags); | |
3091 | return NETDEV_TX_LOCKED; | |
3092 | } | |
1da177e4 LT |
3093 | |
3094 | /* need: count + 2 desc gap to keep tail from touching | |
3095 | * head, otherwise try next time */ | |
65c7973f | 3096 | if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2))) { |
581d708e | 3097 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
3098 | return NETDEV_TX_BUSY; |
3099 | } | |
3100 | ||
96838a40 JB |
3101 | if (unlikely(adapter->hw.mac_type == e1000_82547)) { |
3102 | if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) { | |
1da177e4 | 3103 | netif_stop_queue(netdev); |
1314bbf3 | 3104 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); |
581d708e | 3105 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
3106 | return NETDEV_TX_BUSY; |
3107 | } | |
3108 | } | |
3109 | ||
96838a40 | 3110 | if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) { |
1da177e4 LT |
3111 | tx_flags |= E1000_TX_FLAGS_VLAN; |
3112 | tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); | |
3113 | } | |
3114 | ||
581d708e | 3115 | first = tx_ring->next_to_use; |
96838a40 | 3116 | |
581d708e | 3117 | tso = e1000_tso(adapter, tx_ring, skb); |
1da177e4 LT |
3118 | if (tso < 0) { |
3119 | dev_kfree_skb_any(skb); | |
581d708e | 3120 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
3121 | return NETDEV_TX_OK; |
3122 | } | |
3123 | ||
fd803241 JK |
3124 | if (likely(tso)) { |
3125 | tx_ring->last_tx_tso = 1; | |
1da177e4 | 3126 | tx_flags |= E1000_TX_FLAGS_TSO; |
fd803241 | 3127 | } else if (likely(e1000_tx_csum(adapter, tx_ring, skb))) |
1da177e4 LT |
3128 | tx_flags |= E1000_TX_FLAGS_CSUM; |
3129 | ||
2d7edb92 | 3130 | /* Old method was to assume IPv4 packet by default if TSO was enabled. |
868d5309 | 3131 | * 82571 hardware supports TSO capabilities for IPv6 as well... |
2d7edb92 | 3132 | * no longer assume, we must. */ |
60828236 | 3133 | if (likely(skb->protocol == htons(ETH_P_IP))) |
2d7edb92 MC |
3134 | tx_flags |= E1000_TX_FLAGS_IPV4; |
3135 | ||
581d708e MC |
3136 | e1000_tx_queue(adapter, tx_ring, tx_flags, |
3137 | e1000_tx_map(adapter, tx_ring, skb, first, | |
3138 | max_per_txd, nr_frags, mss)); | |
1da177e4 LT |
3139 | |
3140 | netdev->trans_start = jiffies; | |
3141 | ||
3142 | /* Make sure there is space in the ring for the next send. */ | |
65c7973f | 3143 | e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2); |
1da177e4 | 3144 | |
581d708e | 3145 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
3146 | return NETDEV_TX_OK; |
3147 | } | |
3148 | ||
3149 | /** | |
3150 | * e1000_tx_timeout - Respond to a Tx Hang | |
3151 | * @netdev: network interface device structure | |
3152 | **/ | |
3153 | ||
3154 | static void | |
3155 | e1000_tx_timeout(struct net_device *netdev) | |
3156 | { | |
60490fe0 | 3157 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
3158 | |
3159 | /* Do the reset outside of interrupt context */ | |
87041639 JK |
3160 | adapter->tx_timeout_count++; |
3161 | schedule_work(&adapter->reset_task); | |
1da177e4 LT |
3162 | } |
3163 | ||
3164 | static void | |
87041639 | 3165 | e1000_reset_task(struct net_device *netdev) |
1da177e4 | 3166 | { |
60490fe0 | 3167 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3168 | |
2db10a08 | 3169 | e1000_reinit_locked(adapter); |
1da177e4 LT |
3170 | } |
3171 | ||
3172 | /** | |
3173 | * e1000_get_stats - Get System Network Statistics | |
3174 | * @netdev: network interface device structure | |
3175 | * | |
3176 | * Returns the address of the device statistics structure. | |
3177 | * The statistics are actually updated from the timer callback. | |
3178 | **/ | |
3179 | ||
3180 | static struct net_device_stats * | |
3181 | e1000_get_stats(struct net_device *netdev) | |
3182 | { | |
60490fe0 | 3183 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3184 | |
6b7660cd | 3185 | /* only return the current stats */ |
1da177e4 LT |
3186 | return &adapter->net_stats; |
3187 | } | |
3188 | ||
3189 | /** | |
3190 | * e1000_change_mtu - Change the Maximum Transfer Unit | |
3191 | * @netdev: network interface device structure | |
3192 | * @new_mtu: new value for maximum frame size | |
3193 | * | |
3194 | * Returns 0 on success, negative on failure | |
3195 | **/ | |
3196 | ||
3197 | static int | |
3198 | e1000_change_mtu(struct net_device *netdev, int new_mtu) | |
3199 | { | |
60490fe0 | 3200 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3201 | int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
85b22eb6 | 3202 | uint16_t eeprom_data = 0; |
1da177e4 | 3203 | |
96838a40 JB |
3204 | if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || |
3205 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
3206 | DPRINTK(PROBE, ERR, "Invalid MTU setting\n"); | |
1da177e4 | 3207 | return -EINVAL; |
2d7edb92 | 3208 | } |
1da177e4 | 3209 | |
997f5cbd JK |
3210 | /* Adapter-specific max frame size limits. */ |
3211 | switch (adapter->hw.mac_type) { | |
9e2feace | 3212 | case e1000_undefined ... e1000_82542_rev2_1: |
cd94dd0b | 3213 | case e1000_ich8lan: |
997f5cbd JK |
3214 | if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) { |
3215 | DPRINTK(PROBE, ERR, "Jumbo Frames not supported.\n"); | |
2d7edb92 | 3216 | return -EINVAL; |
2d7edb92 | 3217 | } |
997f5cbd | 3218 | break; |
85b22eb6 | 3219 | case e1000_82573: |
249d71d6 BA |
3220 | /* Jumbo Frames not supported if: |
3221 | * - this is not an 82573L device | |
3222 | * - ASPM is enabled in any way (0x1A bits 3:2) */ | |
85b22eb6 JK |
3223 | e1000_read_eeprom(&adapter->hw, EEPROM_INIT_3GIO_3, 1, |
3224 | &eeprom_data); | |
249d71d6 BA |
3225 | if ((adapter->hw.device_id != E1000_DEV_ID_82573L) || |
3226 | (eeprom_data & EEPROM_WORD1A_ASPM_MASK)) { | |
85b22eb6 JK |
3227 | if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) { |
3228 | DPRINTK(PROBE, ERR, | |
3229 | "Jumbo Frames not supported.\n"); | |
3230 | return -EINVAL; | |
3231 | } | |
3232 | break; | |
3233 | } | |
249d71d6 BA |
3234 | /* ERT will be enabled later to enable wire speed receives */ |
3235 | ||
85b22eb6 | 3236 | /* fall through to get support */ |
997f5cbd JK |
3237 | case e1000_82571: |
3238 | case e1000_82572: | |
87041639 | 3239 | case e1000_80003es2lan: |
997f5cbd JK |
3240 | #define MAX_STD_JUMBO_FRAME_SIZE 9234 |
3241 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { | |
3242 | DPRINTK(PROBE, ERR, "MTU > 9216 not supported.\n"); | |
3243 | return -EINVAL; | |
3244 | } | |
3245 | break; | |
3246 | default: | |
3247 | /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */ | |
3248 | break; | |
1da177e4 LT |
3249 | } |
3250 | ||
87f5032e | 3251 | /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
9e2feace AK |
3252 | * means we reserve 2 more, this pushes us to allocate from the next |
3253 | * larger slab size | |
3254 | * i.e. RXBUFFER_2048 --> size-4096 slab */ | |
3255 | ||
3256 | if (max_frame <= E1000_RXBUFFER_256) | |
3257 | adapter->rx_buffer_len = E1000_RXBUFFER_256; | |
3258 | else if (max_frame <= E1000_RXBUFFER_512) | |
3259 | adapter->rx_buffer_len = E1000_RXBUFFER_512; | |
3260 | else if (max_frame <= E1000_RXBUFFER_1024) | |
3261 | adapter->rx_buffer_len = E1000_RXBUFFER_1024; | |
3262 | else if (max_frame <= E1000_RXBUFFER_2048) | |
3263 | adapter->rx_buffer_len = E1000_RXBUFFER_2048; | |
3264 | else if (max_frame <= E1000_RXBUFFER_4096) | |
3265 | adapter->rx_buffer_len = E1000_RXBUFFER_4096; | |
3266 | else if (max_frame <= E1000_RXBUFFER_8192) | |
3267 | adapter->rx_buffer_len = E1000_RXBUFFER_8192; | |
3268 | else if (max_frame <= E1000_RXBUFFER_16384) | |
3269 | adapter->rx_buffer_len = E1000_RXBUFFER_16384; | |
3270 | ||
3271 | /* adjust allocation if LPE protects us, and we aren't using SBP */ | |
9e2feace AK |
3272 | if (!adapter->hw.tbi_compatibility_on && |
3273 | ((max_frame == MAXIMUM_ETHERNET_FRAME_SIZE) || | |
3274 | (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE))) | |
3275 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; | |
997f5cbd | 3276 | |
2d7edb92 MC |
3277 | netdev->mtu = new_mtu; |
3278 | ||
2db10a08 AK |
3279 | if (netif_running(netdev)) |
3280 | e1000_reinit_locked(adapter); | |
1da177e4 | 3281 | |
1da177e4 LT |
3282 | adapter->hw.max_frame_size = max_frame; |
3283 | ||
3284 | return 0; | |
3285 | } | |
3286 | ||
3287 | /** | |
3288 | * e1000_update_stats - Update the board statistics counters | |
3289 | * @adapter: board private structure | |
3290 | **/ | |
3291 | ||
3292 | void | |
3293 | e1000_update_stats(struct e1000_adapter *adapter) | |
3294 | { | |
3295 | struct e1000_hw *hw = &adapter->hw; | |
282f33c9 | 3296 | struct pci_dev *pdev = adapter->pdev; |
1da177e4 LT |
3297 | unsigned long flags; |
3298 | uint16_t phy_tmp; | |
3299 | ||
3300 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF | |
3301 | ||
282f33c9 LV |
3302 | /* |
3303 | * Prevent stats update while adapter is being reset, or if the pci | |
3304 | * connection is down. | |
3305 | */ | |
9026729b | 3306 | if (adapter->link_speed == 0) |
282f33c9 LV |
3307 | return; |
3308 | if (pdev->error_state && pdev->error_state != pci_channel_io_normal) | |
9026729b AK |
3309 | return; |
3310 | ||
1da177e4 LT |
3311 | spin_lock_irqsave(&adapter->stats_lock, flags); |
3312 | ||
3313 | /* these counters are modified from e1000_adjust_tbi_stats, | |
3314 | * called from the interrupt context, so they must only | |
3315 | * be written while holding adapter->stats_lock | |
3316 | */ | |
3317 | ||
3318 | adapter->stats.crcerrs += E1000_READ_REG(hw, CRCERRS); | |
3319 | adapter->stats.gprc += E1000_READ_REG(hw, GPRC); | |
3320 | adapter->stats.gorcl += E1000_READ_REG(hw, GORCL); | |
3321 | adapter->stats.gorch += E1000_READ_REG(hw, GORCH); | |
3322 | adapter->stats.bprc += E1000_READ_REG(hw, BPRC); | |
3323 | adapter->stats.mprc += E1000_READ_REG(hw, MPRC); | |
3324 | adapter->stats.roc += E1000_READ_REG(hw, ROC); | |
cd94dd0b AK |
3325 | |
3326 | if (adapter->hw.mac_type != e1000_ich8lan) { | |
90fb5135 AK |
3327 | adapter->stats.prc64 += E1000_READ_REG(hw, PRC64); |
3328 | adapter->stats.prc127 += E1000_READ_REG(hw, PRC127); | |
3329 | adapter->stats.prc255 += E1000_READ_REG(hw, PRC255); | |
3330 | adapter->stats.prc511 += E1000_READ_REG(hw, PRC511); | |
3331 | adapter->stats.prc1023 += E1000_READ_REG(hw, PRC1023); | |
3332 | adapter->stats.prc1522 += E1000_READ_REG(hw, PRC1522); | |
cd94dd0b | 3333 | } |
1da177e4 LT |
3334 | |
3335 | adapter->stats.symerrs += E1000_READ_REG(hw, SYMERRS); | |
3336 | adapter->stats.mpc += E1000_READ_REG(hw, MPC); | |
3337 | adapter->stats.scc += E1000_READ_REG(hw, SCC); | |
3338 | adapter->stats.ecol += E1000_READ_REG(hw, ECOL); | |
3339 | adapter->stats.mcc += E1000_READ_REG(hw, MCC); | |
3340 | adapter->stats.latecol += E1000_READ_REG(hw, LATECOL); | |
3341 | adapter->stats.dc += E1000_READ_REG(hw, DC); | |
3342 | adapter->stats.sec += E1000_READ_REG(hw, SEC); | |
3343 | adapter->stats.rlec += E1000_READ_REG(hw, RLEC); | |
3344 | adapter->stats.xonrxc += E1000_READ_REG(hw, XONRXC); | |
3345 | adapter->stats.xontxc += E1000_READ_REG(hw, XONTXC); | |
3346 | adapter->stats.xoffrxc += E1000_READ_REG(hw, XOFFRXC); | |
3347 | adapter->stats.xofftxc += E1000_READ_REG(hw, XOFFTXC); | |
3348 | adapter->stats.fcruc += E1000_READ_REG(hw, FCRUC); | |
3349 | adapter->stats.gptc += E1000_READ_REG(hw, GPTC); | |
3350 | adapter->stats.gotcl += E1000_READ_REG(hw, GOTCL); | |
3351 | adapter->stats.gotch += E1000_READ_REG(hw, GOTCH); | |
3352 | adapter->stats.rnbc += E1000_READ_REG(hw, RNBC); | |
3353 | adapter->stats.ruc += E1000_READ_REG(hw, RUC); | |
3354 | adapter->stats.rfc += E1000_READ_REG(hw, RFC); | |
3355 | adapter->stats.rjc += E1000_READ_REG(hw, RJC); | |
3356 | adapter->stats.torl += E1000_READ_REG(hw, TORL); | |
3357 | adapter->stats.torh += E1000_READ_REG(hw, TORH); | |
3358 | adapter->stats.totl += E1000_READ_REG(hw, TOTL); | |
3359 | adapter->stats.toth += E1000_READ_REG(hw, TOTH); | |
3360 | adapter->stats.tpr += E1000_READ_REG(hw, TPR); | |
cd94dd0b AK |
3361 | |
3362 | if (adapter->hw.mac_type != e1000_ich8lan) { | |
90fb5135 AK |
3363 | adapter->stats.ptc64 += E1000_READ_REG(hw, PTC64); |
3364 | adapter->stats.ptc127 += E1000_READ_REG(hw, PTC127); | |
3365 | adapter->stats.ptc255 += E1000_READ_REG(hw, PTC255); | |
3366 | adapter->stats.ptc511 += E1000_READ_REG(hw, PTC511); | |
3367 | adapter->stats.ptc1023 += E1000_READ_REG(hw, PTC1023); | |
3368 | adapter->stats.ptc1522 += E1000_READ_REG(hw, PTC1522); | |
cd94dd0b AK |
3369 | } |
3370 | ||
1da177e4 LT |
3371 | adapter->stats.mptc += E1000_READ_REG(hw, MPTC); |
3372 | adapter->stats.bptc += E1000_READ_REG(hw, BPTC); | |
3373 | ||
3374 | /* used for adaptive IFS */ | |
3375 | ||
3376 | hw->tx_packet_delta = E1000_READ_REG(hw, TPT); | |
3377 | adapter->stats.tpt += hw->tx_packet_delta; | |
3378 | hw->collision_delta = E1000_READ_REG(hw, COLC); | |
3379 | adapter->stats.colc += hw->collision_delta; | |
3380 | ||
96838a40 | 3381 | if (hw->mac_type >= e1000_82543) { |
1da177e4 LT |
3382 | adapter->stats.algnerrc += E1000_READ_REG(hw, ALGNERRC); |
3383 | adapter->stats.rxerrc += E1000_READ_REG(hw, RXERRC); | |
3384 | adapter->stats.tncrs += E1000_READ_REG(hw, TNCRS); | |
3385 | adapter->stats.cexterr += E1000_READ_REG(hw, CEXTERR); | |
3386 | adapter->stats.tsctc += E1000_READ_REG(hw, TSCTC); | |
3387 | adapter->stats.tsctfc += E1000_READ_REG(hw, TSCTFC); | |
3388 | } | |
96838a40 | 3389 | if (hw->mac_type > e1000_82547_rev_2) { |
2d7edb92 MC |
3390 | adapter->stats.iac += E1000_READ_REG(hw, IAC); |
3391 | adapter->stats.icrxoc += E1000_READ_REG(hw, ICRXOC); | |
cd94dd0b AK |
3392 | |
3393 | if (adapter->hw.mac_type != e1000_ich8lan) { | |
90fb5135 AK |
3394 | adapter->stats.icrxptc += E1000_READ_REG(hw, ICRXPTC); |
3395 | adapter->stats.icrxatc += E1000_READ_REG(hw, ICRXATC); | |
3396 | adapter->stats.ictxptc += E1000_READ_REG(hw, ICTXPTC); | |
3397 | adapter->stats.ictxatc += E1000_READ_REG(hw, ICTXATC); | |
3398 | adapter->stats.ictxqec += E1000_READ_REG(hw, ICTXQEC); | |
3399 | adapter->stats.ictxqmtc += E1000_READ_REG(hw, ICTXQMTC); | |
3400 | adapter->stats.icrxdmtc += E1000_READ_REG(hw, ICRXDMTC); | |
cd94dd0b | 3401 | } |
2d7edb92 | 3402 | } |
1da177e4 LT |
3403 | |
3404 | /* Fill out the OS statistics structure */ | |
1da177e4 LT |
3405 | adapter->net_stats.rx_packets = adapter->stats.gprc; |
3406 | adapter->net_stats.tx_packets = adapter->stats.gptc; | |
3407 | adapter->net_stats.rx_bytes = adapter->stats.gorcl; | |
3408 | adapter->net_stats.tx_bytes = adapter->stats.gotcl; | |
3409 | adapter->net_stats.multicast = adapter->stats.mprc; | |
3410 | adapter->net_stats.collisions = adapter->stats.colc; | |
3411 | ||
3412 | /* Rx Errors */ | |
3413 | ||
87041639 JK |
3414 | /* RLEC on some newer hardware can be incorrect so build |
3415 | * our own version based on RUC and ROC */ | |
1da177e4 LT |
3416 | adapter->net_stats.rx_errors = adapter->stats.rxerrc + |
3417 | adapter->stats.crcerrs + adapter->stats.algnerrc + | |
87041639 JK |
3418 | adapter->stats.ruc + adapter->stats.roc + |
3419 | adapter->stats.cexterr; | |
49559854 MW |
3420 | adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc; |
3421 | adapter->net_stats.rx_length_errors = adapter->stats.rlerrc; | |
1da177e4 LT |
3422 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; |
3423 | adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; | |
1da177e4 LT |
3424 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; |
3425 | ||
3426 | /* Tx Errors */ | |
49559854 MW |
3427 | adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol; |
3428 | adapter->net_stats.tx_errors = adapter->stats.txerrc; | |
1da177e4 LT |
3429 | adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; |
3430 | adapter->net_stats.tx_window_errors = adapter->stats.latecol; | |
3431 | adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; | |
3432 | ||
3433 | /* Tx Dropped needs to be maintained elsewhere */ | |
3434 | ||
3435 | /* Phy Stats */ | |
96838a40 JB |
3436 | if (hw->media_type == e1000_media_type_copper) { |
3437 | if ((adapter->link_speed == SPEED_1000) && | |
1da177e4 LT |
3438 | (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
3439 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; | |
3440 | adapter->phy_stats.idle_errors += phy_tmp; | |
3441 | } | |
3442 | ||
96838a40 | 3443 | if ((hw->mac_type <= e1000_82546) && |
1da177e4 LT |
3444 | (hw->phy_type == e1000_phy_m88) && |
3445 | !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) | |
3446 | adapter->phy_stats.receive_errors += phy_tmp; | |
3447 | } | |
3448 | ||
3449 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
3450 | } | |
3451 | ||
3452 | /** | |
3453 | * e1000_intr - Interrupt Handler | |
3454 | * @irq: interrupt number | |
3455 | * @data: pointer to a network interface device structure | |
1da177e4 LT |
3456 | **/ |
3457 | ||
3458 | static irqreturn_t | |
7d12e780 | 3459 | e1000_intr(int irq, void *data) |
1da177e4 LT |
3460 | { |
3461 | struct net_device *netdev = data; | |
60490fe0 | 3462 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3463 | struct e1000_hw *hw = &adapter->hw; |
87041639 | 3464 | uint32_t rctl, icr = E1000_READ_REG(hw, ICR); |
1e613fd9 | 3465 | #ifndef CONFIG_E1000_NAPI |
581d708e | 3466 | int i; |
1e613fd9 JK |
3467 | #else |
3468 | /* Interrupt Auto-Mask...upon reading ICR, | |
3469 | * interrupts are masked. No need for the | |
3470 | * IMC write, but it does mean we should | |
3471 | * account for it ASAP. */ | |
3472 | if (likely(hw->mac_type >= e1000_82571)) | |
3473 | atomic_inc(&adapter->irq_sem); | |
be2b28ed | 3474 | #endif |
1da177e4 | 3475 | |
1e613fd9 JK |
3476 | if (unlikely(!icr)) { |
3477 | #ifdef CONFIG_E1000_NAPI | |
3478 | if (hw->mac_type >= e1000_82571) | |
3479 | e1000_irq_enable(adapter); | |
3480 | #endif | |
1da177e4 | 3481 | return IRQ_NONE; /* Not our interrupt */ |
1e613fd9 | 3482 | } |
1da177e4 | 3483 | |
96838a40 | 3484 | if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { |
1da177e4 | 3485 | hw->get_link_status = 1; |
87041639 JK |
3486 | /* 80003ES2LAN workaround-- |
3487 | * For packet buffer work-around on link down event; | |
3488 | * disable receives here in the ISR and | |
3489 | * reset adapter in watchdog | |
3490 | */ | |
3491 | if (netif_carrier_ok(netdev) && | |
3492 | (adapter->hw.mac_type == e1000_80003es2lan)) { | |
3493 | /* disable receives */ | |
3494 | rctl = E1000_READ_REG(hw, RCTL); | |
3495 | E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); | |
3496 | } | |
1314bbf3 AK |
3497 | /* guard against interrupt when we're going down */ |
3498 | if (!test_bit(__E1000_DOWN, &adapter->flags)) | |
3499 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1da177e4 LT |
3500 | } |
3501 | ||
3502 | #ifdef CONFIG_E1000_NAPI | |
1e613fd9 JK |
3503 | if (unlikely(hw->mac_type < e1000_82571)) { |
3504 | atomic_inc(&adapter->irq_sem); | |
3505 | E1000_WRITE_REG(hw, IMC, ~0); | |
3506 | E1000_WRITE_FLUSH(hw); | |
3507 | } | |
d3d9e484 AK |
3508 | if (likely(netif_rx_schedule_prep(netdev))) |
3509 | __netif_rx_schedule(netdev); | |
581d708e | 3510 | else |
90fb5135 AK |
3511 | /* this really should not happen! if it does it is basically a |
3512 | * bug, but not a hard error, so enable ints and continue */ | |
581d708e | 3513 | e1000_irq_enable(adapter); |
c1605eb3 | 3514 | #else |
1da177e4 | 3515 | /* Writing IMC and IMS is needed for 82547. |
96838a40 JB |
3516 | * Due to Hub Link bus being occupied, an interrupt |
3517 | * de-assertion message is not able to be sent. | |
3518 | * When an interrupt assertion message is generated later, | |
3519 | * two messages are re-ordered and sent out. | |
3520 | * That causes APIC to think 82547 is in de-assertion | |
3521 | * state, while 82547 is in assertion state, resulting | |
3522 | * in dead lock. Writing IMC forces 82547 into | |
3523 | * de-assertion state. | |
3524 | */ | |
3525 | if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) { | |
1da177e4 | 3526 | atomic_inc(&adapter->irq_sem); |
2648345f | 3527 | E1000_WRITE_REG(hw, IMC, ~0); |
1da177e4 LT |
3528 | } |
3529 | ||
96838a40 JB |
3530 | for (i = 0; i < E1000_MAX_INTR; i++) |
3531 | if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) & | |
581d708e | 3532 | !e1000_clean_tx_irq(adapter, adapter->tx_ring))) |
1da177e4 LT |
3533 | break; |
3534 | ||
96838a40 | 3535 | if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) |
1da177e4 | 3536 | e1000_irq_enable(adapter); |
581d708e | 3537 | |
c1605eb3 | 3538 | #endif |
1da177e4 LT |
3539 | return IRQ_HANDLED; |
3540 | } | |
3541 | ||
3542 | #ifdef CONFIG_E1000_NAPI | |
3543 | /** | |
3544 | * e1000_clean - NAPI Rx polling callback | |
3545 | * @adapter: board private structure | |
3546 | **/ | |
3547 | ||
3548 | static int | |
581d708e | 3549 | e1000_clean(struct net_device *poll_dev, int *budget) |
1da177e4 | 3550 | { |
581d708e MC |
3551 | struct e1000_adapter *adapter; |
3552 | int work_to_do = min(*budget, poll_dev->quota); | |
d3d9e484 | 3553 | int tx_cleaned = 0, work_done = 0; |
581d708e MC |
3554 | |
3555 | /* Must NOT use netdev_priv macro here. */ | |
3556 | adapter = poll_dev->priv; | |
3557 | ||
3558 | /* Keep link state information with original netdev */ | |
d3d9e484 | 3559 | if (!netif_carrier_ok(poll_dev)) |
581d708e | 3560 | goto quit_polling; |
2648345f | 3561 | |
d3d9e484 AK |
3562 | /* e1000_clean is called per-cpu. This lock protects |
3563 | * tx_ring[0] from being cleaned by multiple cpus | |
3564 | * simultaneously. A failure obtaining the lock means | |
3565 | * tx_ring[0] is currently being cleaned anyway. */ | |
3566 | if (spin_trylock(&adapter->tx_queue_lock)) { | |
3567 | tx_cleaned = e1000_clean_tx_irq(adapter, | |
3568 | &adapter->tx_ring[0]); | |
3569 | spin_unlock(&adapter->tx_queue_lock); | |
581d708e MC |
3570 | } |
3571 | ||
d3d9e484 | 3572 | adapter->clean_rx(adapter, &adapter->rx_ring[0], |
581d708e | 3573 | &work_done, work_to_do); |
1da177e4 LT |
3574 | |
3575 | *budget -= work_done; | |
581d708e | 3576 | poll_dev->quota -= work_done; |
96838a40 | 3577 | |
2b02893e | 3578 | /* If no Tx and not enough Rx work done, exit the polling mode */ |
96838a40 | 3579 | if ((!tx_cleaned && (work_done == 0)) || |
d3d9e484 | 3580 | !netif_running(poll_dev)) { |
581d708e MC |
3581 | quit_polling: |
3582 | netif_rx_complete(poll_dev); | |
1da177e4 LT |
3583 | e1000_irq_enable(adapter); |
3584 | return 0; | |
3585 | } | |
3586 | ||
3587 | return 1; | |
3588 | } | |
3589 | ||
3590 | #endif | |
3591 | /** | |
3592 | * e1000_clean_tx_irq - Reclaim resources after transmit completes | |
3593 | * @adapter: board private structure | |
3594 | **/ | |
3595 | ||
3596 | static boolean_t | |
581d708e MC |
3597 | e1000_clean_tx_irq(struct e1000_adapter *adapter, |
3598 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 3599 | { |
1da177e4 LT |
3600 | struct net_device *netdev = adapter->netdev; |
3601 | struct e1000_tx_desc *tx_desc, *eop_desc; | |
3602 | struct e1000_buffer *buffer_info; | |
3603 | unsigned int i, eop; | |
2a1af5d7 JK |
3604 | #ifdef CONFIG_E1000_NAPI |
3605 | unsigned int count = 0; | |
3606 | #endif | |
1da177e4 LT |
3607 | boolean_t cleaned = FALSE; |
3608 | ||
3609 | i = tx_ring->next_to_clean; | |
3610 | eop = tx_ring->buffer_info[i].next_to_watch; | |
3611 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
3612 | ||
581d708e | 3613 | while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) { |
96838a40 | 3614 | for (cleaned = FALSE; !cleaned; ) { |
1da177e4 LT |
3615 | tx_desc = E1000_TX_DESC(*tx_ring, i); |
3616 | buffer_info = &tx_ring->buffer_info[i]; | |
3617 | cleaned = (i == eop); | |
3618 | ||
fd803241 | 3619 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
8241e35e | 3620 | memset(tx_desc, 0, sizeof(struct e1000_tx_desc)); |
1da177e4 | 3621 | |
96838a40 | 3622 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 | 3623 | } |
581d708e | 3624 | |
1da177e4 LT |
3625 | eop = tx_ring->buffer_info[i].next_to_watch; |
3626 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
2a1af5d7 JK |
3627 | #ifdef CONFIG_E1000_NAPI |
3628 | #define E1000_TX_WEIGHT 64 | |
3629 | /* weight of a sort for tx, to avoid endless transmit cleanup */ | |
3630 | if (count++ == E1000_TX_WEIGHT) break; | |
3631 | #endif | |
1da177e4 LT |
3632 | } |
3633 | ||
3634 | tx_ring->next_to_clean = i; | |
3635 | ||
77b2aad5 | 3636 | #define TX_WAKE_THRESHOLD 32 |
65c7973f JB |
3637 | if (unlikely(cleaned && netif_carrier_ok(netdev) && |
3638 | E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) { | |
3639 | /* Make sure that anybody stopping the queue after this | |
3640 | * sees the new next_to_clean. | |
3641 | */ | |
3642 | smp_mb(); | |
3643 | if (netif_queue_stopped(netdev)) | |
77b2aad5 | 3644 | netif_wake_queue(netdev); |
77b2aad5 | 3645 | } |
2648345f | 3646 | |
581d708e | 3647 | if (adapter->detect_tx_hung) { |
2648345f | 3648 | /* Detect a transmit hang in hardware, this serializes the |
1da177e4 LT |
3649 | * check with the clearing of time_stamp and movement of i */ |
3650 | adapter->detect_tx_hung = FALSE; | |
392137fa JK |
3651 | if (tx_ring->buffer_info[eop].dma && |
3652 | time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + | |
7e6c9861 | 3653 | (adapter->tx_timeout_factor * HZ)) |
70b8f1e1 | 3654 | && !(E1000_READ_REG(&adapter->hw, STATUS) & |
392137fa | 3655 | E1000_STATUS_TXOFF)) { |
70b8f1e1 MC |
3656 | |
3657 | /* detected Tx unit hang */ | |
c6963ef5 | 3658 | DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" |
7bfa4816 | 3659 | " Tx Queue <%lu>\n" |
70b8f1e1 MC |
3660 | " TDH <%x>\n" |
3661 | " TDT <%x>\n" | |
3662 | " next_to_use <%x>\n" | |
3663 | " next_to_clean <%x>\n" | |
3664 | "buffer_info[next_to_clean]\n" | |
70b8f1e1 MC |
3665 | " time_stamp <%lx>\n" |
3666 | " next_to_watch <%x>\n" | |
3667 | " jiffies <%lx>\n" | |
3668 | " next_to_watch.status <%x>\n", | |
7bfa4816 JK |
3669 | (unsigned long)((tx_ring - adapter->tx_ring) / |
3670 | sizeof(struct e1000_tx_ring)), | |
581d708e MC |
3671 | readl(adapter->hw.hw_addr + tx_ring->tdh), |
3672 | readl(adapter->hw.hw_addr + tx_ring->tdt), | |
70b8f1e1 | 3673 | tx_ring->next_to_use, |
392137fa JK |
3674 | tx_ring->next_to_clean, |
3675 | tx_ring->buffer_info[eop].time_stamp, | |
70b8f1e1 MC |
3676 | eop, |
3677 | jiffies, | |
3678 | eop_desc->upper.fields.status); | |
1da177e4 | 3679 | netif_stop_queue(netdev); |
70b8f1e1 | 3680 | } |
1da177e4 | 3681 | } |
1da177e4 LT |
3682 | return cleaned; |
3683 | } | |
3684 | ||
3685 | /** | |
3686 | * e1000_rx_checksum - Receive Checksum Offload for 82543 | |
2d7edb92 MC |
3687 | * @adapter: board private structure |
3688 | * @status_err: receive descriptor status and error fields | |
3689 | * @csum: receive descriptor csum field | |
3690 | * @sk_buff: socket buffer with received data | |
1da177e4 LT |
3691 | **/ |
3692 | ||
e619d523 | 3693 | static void |
1da177e4 | 3694 | e1000_rx_checksum(struct e1000_adapter *adapter, |
2d7edb92 MC |
3695 | uint32_t status_err, uint32_t csum, |
3696 | struct sk_buff *skb) | |
1da177e4 | 3697 | { |
2d7edb92 MC |
3698 | uint16_t status = (uint16_t)status_err; |
3699 | uint8_t errors = (uint8_t)(status_err >> 24); | |
3700 | skb->ip_summed = CHECKSUM_NONE; | |
3701 | ||
1da177e4 | 3702 | /* 82543 or newer only */ |
96838a40 | 3703 | if (unlikely(adapter->hw.mac_type < e1000_82543)) return; |
1da177e4 | 3704 | /* Ignore Checksum bit is set */ |
96838a40 | 3705 | if (unlikely(status & E1000_RXD_STAT_IXSM)) return; |
2d7edb92 | 3706 | /* TCP/UDP checksum error bit is set */ |
96838a40 | 3707 | if (unlikely(errors & E1000_RXD_ERR_TCPE)) { |
1da177e4 | 3708 | /* let the stack verify checksum errors */ |
1da177e4 | 3709 | adapter->hw_csum_err++; |
2d7edb92 MC |
3710 | return; |
3711 | } | |
3712 | /* TCP/UDP Checksum has not been calculated */ | |
96838a40 JB |
3713 | if (adapter->hw.mac_type <= e1000_82547_rev_2) { |
3714 | if (!(status & E1000_RXD_STAT_TCPCS)) | |
2d7edb92 | 3715 | return; |
1da177e4 | 3716 | } else { |
96838a40 | 3717 | if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) |
2d7edb92 MC |
3718 | return; |
3719 | } | |
3720 | /* It must be a TCP or UDP packet with a valid checksum */ | |
3721 | if (likely(status & E1000_RXD_STAT_TCPCS)) { | |
1da177e4 LT |
3722 | /* TCP checksum is good */ |
3723 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
2d7edb92 MC |
3724 | } else if (adapter->hw.mac_type > e1000_82547_rev_2) { |
3725 | /* IP fragment with UDP payload */ | |
3726 | /* Hardware complements the payload checksum, so we undo it | |
3727 | * and then put the value in host order for further stack use. | |
3728 | */ | |
3729 | csum = ntohl(csum ^ 0xFFFF); | |
3730 | skb->csum = csum; | |
84fa7933 | 3731 | skb->ip_summed = CHECKSUM_COMPLETE; |
1da177e4 | 3732 | } |
2d7edb92 | 3733 | adapter->hw_csum_good++; |
1da177e4 LT |
3734 | } |
3735 | ||
3736 | /** | |
2d7edb92 | 3737 | * e1000_clean_rx_irq - Send received data up the network stack; legacy |
1da177e4 LT |
3738 | * @adapter: board private structure |
3739 | **/ | |
3740 | ||
3741 | static boolean_t | |
3742 | #ifdef CONFIG_E1000_NAPI | |
581d708e MC |
3743 | e1000_clean_rx_irq(struct e1000_adapter *adapter, |
3744 | struct e1000_rx_ring *rx_ring, | |
3745 | int *work_done, int work_to_do) | |
1da177e4 | 3746 | #else |
581d708e MC |
3747 | e1000_clean_rx_irq(struct e1000_adapter *adapter, |
3748 | struct e1000_rx_ring *rx_ring) | |
1da177e4 LT |
3749 | #endif |
3750 | { | |
1da177e4 LT |
3751 | struct net_device *netdev = adapter->netdev; |
3752 | struct pci_dev *pdev = adapter->pdev; | |
86c3d59f JB |
3753 | struct e1000_rx_desc *rx_desc, *next_rxd; |
3754 | struct e1000_buffer *buffer_info, *next_buffer; | |
1da177e4 LT |
3755 | unsigned long flags; |
3756 | uint32_t length; | |
3757 | uint8_t last_byte; | |
3758 | unsigned int i; | |
72d64a43 | 3759 | int cleaned_count = 0; |
a1415ee6 | 3760 | boolean_t cleaned = FALSE; |
1da177e4 LT |
3761 | |
3762 | i = rx_ring->next_to_clean; | |
3763 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
b92ff8ee | 3764 | buffer_info = &rx_ring->buffer_info[i]; |
1da177e4 | 3765 | |
b92ff8ee | 3766 | while (rx_desc->status & E1000_RXD_STAT_DD) { |
24f476ee | 3767 | struct sk_buff *skb; |
a292ca6e | 3768 | u8 status; |
90fb5135 | 3769 | |
1da177e4 | 3770 | #ifdef CONFIG_E1000_NAPI |
96838a40 | 3771 | if (*work_done >= work_to_do) |
1da177e4 LT |
3772 | break; |
3773 | (*work_done)++; | |
3774 | #endif | |
a292ca6e | 3775 | status = rx_desc->status; |
b92ff8ee | 3776 | skb = buffer_info->skb; |
86c3d59f JB |
3777 | buffer_info->skb = NULL; |
3778 | ||
30320be8 JK |
3779 | prefetch(skb->data - NET_IP_ALIGN); |
3780 | ||
86c3d59f JB |
3781 | if (++i == rx_ring->count) i = 0; |
3782 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
30320be8 JK |
3783 | prefetch(next_rxd); |
3784 | ||
86c3d59f | 3785 | next_buffer = &rx_ring->buffer_info[i]; |
86c3d59f | 3786 | |
72d64a43 JK |
3787 | cleaned = TRUE; |
3788 | cleaned_count++; | |
a292ca6e JK |
3789 | pci_unmap_single(pdev, |
3790 | buffer_info->dma, | |
3791 | buffer_info->length, | |
1da177e4 LT |
3792 | PCI_DMA_FROMDEVICE); |
3793 | ||
1da177e4 LT |
3794 | length = le16_to_cpu(rx_desc->length); |
3795 | ||
a1415ee6 JK |
3796 | if (unlikely(!(status & E1000_RXD_STAT_EOP))) { |
3797 | /* All receives must fit into a single buffer */ | |
3798 | E1000_DBG("%s: Receive packet consumed multiple" | |
3799 | " buffers\n", netdev->name); | |
864c4e45 | 3800 | /* recycle */ |
8fc897b0 | 3801 | buffer_info->skb = skb; |
1da177e4 LT |
3802 | goto next_desc; |
3803 | } | |
3804 | ||
96838a40 | 3805 | if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { |
1da177e4 | 3806 | last_byte = *(skb->data + length - 1); |
b92ff8ee | 3807 | if (TBI_ACCEPT(&adapter->hw, status, |
1da177e4 LT |
3808 | rx_desc->errors, length, last_byte)) { |
3809 | spin_lock_irqsave(&adapter->stats_lock, flags); | |
a292ca6e JK |
3810 | e1000_tbi_adjust_stats(&adapter->hw, |
3811 | &adapter->stats, | |
1da177e4 LT |
3812 | length, skb->data); |
3813 | spin_unlock_irqrestore(&adapter->stats_lock, | |
3814 | flags); | |
3815 | length--; | |
3816 | } else { | |
9e2feace AK |
3817 | /* recycle */ |
3818 | buffer_info->skb = skb; | |
1da177e4 LT |
3819 | goto next_desc; |
3820 | } | |
1cb5821f | 3821 | } |
1da177e4 | 3822 | |
d2a1e213 JB |
3823 | /* adjust length to remove Ethernet CRC, this must be |
3824 | * done after the TBI_ACCEPT workaround above */ | |
3825 | length -= 4; | |
3826 | ||
a292ca6e JK |
3827 | /* code added for copybreak, this should improve |
3828 | * performance for small packets with large amounts | |
3829 | * of reassembly being done in the stack */ | |
3830 | #define E1000_CB_LENGTH 256 | |
a1415ee6 | 3831 | if (length < E1000_CB_LENGTH) { |
a292ca6e | 3832 | struct sk_buff *new_skb = |
87f5032e | 3833 | netdev_alloc_skb(netdev, length + NET_IP_ALIGN); |
a292ca6e JK |
3834 | if (new_skb) { |
3835 | skb_reserve(new_skb, NET_IP_ALIGN); | |
a292ca6e JK |
3836 | memcpy(new_skb->data - NET_IP_ALIGN, |
3837 | skb->data - NET_IP_ALIGN, | |
3838 | length + NET_IP_ALIGN); | |
3839 | /* save the skb in buffer_info as good */ | |
3840 | buffer_info->skb = skb; | |
3841 | skb = new_skb; | |
3842 | skb_put(skb, length); | |
3843 | } | |
a1415ee6 JK |
3844 | } else |
3845 | skb_put(skb, length); | |
a292ca6e JK |
3846 | |
3847 | /* end copybreak code */ | |
1da177e4 LT |
3848 | |
3849 | /* Receive Checksum Offload */ | |
a292ca6e JK |
3850 | e1000_rx_checksum(adapter, |
3851 | (uint32_t)(status) | | |
2d7edb92 | 3852 | ((uint32_t)(rx_desc->errors) << 24), |
c3d7a3a4 | 3853 | le16_to_cpu(rx_desc->csum), skb); |
96838a40 | 3854 | |
1da177e4 LT |
3855 | skb->protocol = eth_type_trans(skb, netdev); |
3856 | #ifdef CONFIG_E1000_NAPI | |
96838a40 | 3857 | if (unlikely(adapter->vlgrp && |
a292ca6e | 3858 | (status & E1000_RXD_STAT_VP))) { |
1da177e4 | 3859 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
2d7edb92 MC |
3860 | le16_to_cpu(rx_desc->special) & |
3861 | E1000_RXD_SPC_VLAN_MASK); | |
1da177e4 LT |
3862 | } else { |
3863 | netif_receive_skb(skb); | |
3864 | } | |
3865 | #else /* CONFIG_E1000_NAPI */ | |
96838a40 | 3866 | if (unlikely(adapter->vlgrp && |
b92ff8ee | 3867 | (status & E1000_RXD_STAT_VP))) { |
1da177e4 LT |
3868 | vlan_hwaccel_rx(skb, adapter->vlgrp, |
3869 | le16_to_cpu(rx_desc->special) & | |
3870 | E1000_RXD_SPC_VLAN_MASK); | |
3871 | } else { | |
3872 | netif_rx(skb); | |
3873 | } | |
3874 | #endif /* CONFIG_E1000_NAPI */ | |
3875 | netdev->last_rx = jiffies; | |
3876 | ||
3877 | next_desc: | |
3878 | rx_desc->status = 0; | |
1da177e4 | 3879 | |
72d64a43 JK |
3880 | /* return some buffers to hardware, one at a time is too slow */ |
3881 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
3882 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
3883 | cleaned_count = 0; | |
3884 | } | |
3885 | ||
30320be8 | 3886 | /* use prefetched values */ |
86c3d59f JB |
3887 | rx_desc = next_rxd; |
3888 | buffer_info = next_buffer; | |
1da177e4 | 3889 | } |
1da177e4 | 3890 | rx_ring->next_to_clean = i; |
72d64a43 JK |
3891 | |
3892 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
3893 | if (cleaned_count) | |
3894 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
2d7edb92 MC |
3895 | |
3896 | return cleaned; | |
3897 | } | |
3898 | ||
3899 | /** | |
3900 | * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split | |
3901 | * @adapter: board private structure | |
3902 | **/ | |
3903 | ||
3904 | static boolean_t | |
3905 | #ifdef CONFIG_E1000_NAPI | |
581d708e MC |
3906 | e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
3907 | struct e1000_rx_ring *rx_ring, | |
3908 | int *work_done, int work_to_do) | |
2d7edb92 | 3909 | #else |
581d708e MC |
3910 | e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
3911 | struct e1000_rx_ring *rx_ring) | |
2d7edb92 MC |
3912 | #endif |
3913 | { | |
86c3d59f | 3914 | union e1000_rx_desc_packet_split *rx_desc, *next_rxd; |
2d7edb92 MC |
3915 | struct net_device *netdev = adapter->netdev; |
3916 | struct pci_dev *pdev = adapter->pdev; | |
86c3d59f | 3917 | struct e1000_buffer *buffer_info, *next_buffer; |
2d7edb92 MC |
3918 | struct e1000_ps_page *ps_page; |
3919 | struct e1000_ps_page_dma *ps_page_dma; | |
24f476ee | 3920 | struct sk_buff *skb; |
2d7edb92 MC |
3921 | unsigned int i, j; |
3922 | uint32_t length, staterr; | |
72d64a43 | 3923 | int cleaned_count = 0; |
2d7edb92 MC |
3924 | boolean_t cleaned = FALSE; |
3925 | ||
3926 | i = rx_ring->next_to_clean; | |
3927 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
683a38f3 | 3928 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
9e2feace | 3929 | buffer_info = &rx_ring->buffer_info[i]; |
2d7edb92 | 3930 | |
96838a40 | 3931 | while (staterr & E1000_RXD_STAT_DD) { |
2d7edb92 MC |
3932 | ps_page = &rx_ring->ps_page[i]; |
3933 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
3934 | #ifdef CONFIG_E1000_NAPI | |
96838a40 | 3935 | if (unlikely(*work_done >= work_to_do)) |
2d7edb92 MC |
3936 | break; |
3937 | (*work_done)++; | |
3938 | #endif | |
86c3d59f JB |
3939 | skb = buffer_info->skb; |
3940 | ||
30320be8 JK |
3941 | /* in the packet split case this is header only */ |
3942 | prefetch(skb->data - NET_IP_ALIGN); | |
3943 | ||
86c3d59f JB |
3944 | if (++i == rx_ring->count) i = 0; |
3945 | next_rxd = E1000_RX_DESC_PS(*rx_ring, i); | |
30320be8 JK |
3946 | prefetch(next_rxd); |
3947 | ||
86c3d59f | 3948 | next_buffer = &rx_ring->buffer_info[i]; |
86c3d59f | 3949 | |
2d7edb92 | 3950 | cleaned = TRUE; |
72d64a43 | 3951 | cleaned_count++; |
2d7edb92 MC |
3952 | pci_unmap_single(pdev, buffer_info->dma, |
3953 | buffer_info->length, | |
3954 | PCI_DMA_FROMDEVICE); | |
3955 | ||
96838a40 | 3956 | if (unlikely(!(staterr & E1000_RXD_STAT_EOP))) { |
2d7edb92 MC |
3957 | E1000_DBG("%s: Packet Split buffers didn't pick up" |
3958 | " the full packet\n", netdev->name); | |
3959 | dev_kfree_skb_irq(skb); | |
3960 | goto next_desc; | |
3961 | } | |
1da177e4 | 3962 | |
96838a40 | 3963 | if (unlikely(staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK)) { |
2d7edb92 MC |
3964 | dev_kfree_skb_irq(skb); |
3965 | goto next_desc; | |
3966 | } | |
3967 | ||
3968 | length = le16_to_cpu(rx_desc->wb.middle.length0); | |
3969 | ||
96838a40 | 3970 | if (unlikely(!length)) { |
2d7edb92 MC |
3971 | E1000_DBG("%s: Last part of the packet spanning" |
3972 | " multiple descriptors\n", netdev->name); | |
3973 | dev_kfree_skb_irq(skb); | |
3974 | goto next_desc; | |
3975 | } | |
3976 | ||
3977 | /* Good Receive */ | |
3978 | skb_put(skb, length); | |
3979 | ||
dc7c6add JK |
3980 | { |
3981 | /* this looks ugly, but it seems compiler issues make it | |
3982 | more efficient than reusing j */ | |
3983 | int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]); | |
3984 | ||
3985 | /* page alloc/put takes too long and effects small packet | |
3986 | * throughput, so unsplit small packets and save the alloc/put*/ | |
9e2feace | 3987 | if (l1 && ((length + l1) <= adapter->rx_ps_bsize0)) { |
dc7c6add | 3988 | u8 *vaddr; |
76c224bc | 3989 | /* there is no documentation about how to call |
dc7c6add JK |
3990 | * kmap_atomic, so we can't hold the mapping |
3991 | * very long */ | |
3992 | pci_dma_sync_single_for_cpu(pdev, | |
3993 | ps_page_dma->ps_page_dma[0], | |
3994 | PAGE_SIZE, | |
3995 | PCI_DMA_FROMDEVICE); | |
3996 | vaddr = kmap_atomic(ps_page->ps_page[0], | |
3997 | KM_SKB_DATA_SOFTIRQ); | |
3998 | memcpy(skb->tail, vaddr, l1); | |
3999 | kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ); | |
4000 | pci_dma_sync_single_for_device(pdev, | |
4001 | ps_page_dma->ps_page_dma[0], | |
4002 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
f235a2ab AK |
4003 | /* remove the CRC */ |
4004 | l1 -= 4; | |
dc7c6add | 4005 | skb_put(skb, l1); |
dc7c6add JK |
4006 | goto copydone; |
4007 | } /* if */ | |
4008 | } | |
90fb5135 | 4009 | |
96838a40 | 4010 | for (j = 0; j < adapter->rx_ps_pages; j++) { |
30320be8 | 4011 | if (!(length= le16_to_cpu(rx_desc->wb.upper.length[j]))) |
2d7edb92 | 4012 | break; |
2d7edb92 MC |
4013 | pci_unmap_page(pdev, ps_page_dma->ps_page_dma[j], |
4014 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
4015 | ps_page_dma->ps_page_dma[j] = 0; | |
329bfd0b JK |
4016 | skb_fill_page_desc(skb, j, ps_page->ps_page[j], 0, |
4017 | length); | |
2d7edb92 | 4018 | ps_page->ps_page[j] = NULL; |
2d7edb92 MC |
4019 | skb->len += length; |
4020 | skb->data_len += length; | |
5d51b80f | 4021 | skb->truesize += length; |
2d7edb92 MC |
4022 | } |
4023 | ||
f235a2ab AK |
4024 | /* strip the ethernet crc, problem is we're using pages now so |
4025 | * this whole operation can get a little cpu intensive */ | |
4026 | pskb_trim(skb, skb->len - 4); | |
4027 | ||
dc7c6add | 4028 | copydone: |
2d7edb92 | 4029 | e1000_rx_checksum(adapter, staterr, |
c3d7a3a4 | 4030 | le16_to_cpu(rx_desc->wb.lower.hi_dword.csum_ip.csum), skb); |
2d7edb92 MC |
4031 | skb->protocol = eth_type_trans(skb, netdev); |
4032 | ||
96838a40 | 4033 | if (likely(rx_desc->wb.upper.header_status & |
c3d7a3a4 | 4034 | cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP))) |
e4c811c9 | 4035 | adapter->rx_hdr_split++; |
2d7edb92 | 4036 | #ifdef CONFIG_E1000_NAPI |
96838a40 | 4037 | if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) { |
2d7edb92 | 4038 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
683a38f3 MC |
4039 | le16_to_cpu(rx_desc->wb.middle.vlan) & |
4040 | E1000_RXD_SPC_VLAN_MASK); | |
2d7edb92 MC |
4041 | } else { |
4042 | netif_receive_skb(skb); | |
4043 | } | |
4044 | #else /* CONFIG_E1000_NAPI */ | |
96838a40 | 4045 | if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) { |
2d7edb92 | 4046 | vlan_hwaccel_rx(skb, adapter->vlgrp, |
683a38f3 MC |
4047 | le16_to_cpu(rx_desc->wb.middle.vlan) & |
4048 | E1000_RXD_SPC_VLAN_MASK); | |
2d7edb92 MC |
4049 | } else { |
4050 | netif_rx(skb); | |
4051 | } | |
4052 | #endif /* CONFIG_E1000_NAPI */ | |
4053 | netdev->last_rx = jiffies; | |
4054 | ||
4055 | next_desc: | |
c3d7a3a4 | 4056 | rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF); |
2d7edb92 | 4057 | buffer_info->skb = NULL; |
2d7edb92 | 4058 | |
72d64a43 JK |
4059 | /* return some buffers to hardware, one at a time is too slow */ |
4060 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
4061 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
4062 | cleaned_count = 0; | |
4063 | } | |
4064 | ||
30320be8 | 4065 | /* use prefetched values */ |
86c3d59f JB |
4066 | rx_desc = next_rxd; |
4067 | buffer_info = next_buffer; | |
4068 | ||
683a38f3 | 4069 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
2d7edb92 MC |
4070 | } |
4071 | rx_ring->next_to_clean = i; | |
72d64a43 JK |
4072 | |
4073 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
4074 | if (cleaned_count) | |
4075 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
1da177e4 LT |
4076 | |
4077 | return cleaned; | |
4078 | } | |
4079 | ||
4080 | /** | |
2d7edb92 | 4081 | * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
1da177e4 LT |
4082 | * @adapter: address of board private structure |
4083 | **/ | |
4084 | ||
4085 | static void | |
581d708e | 4086 | e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
72d64a43 | 4087 | struct e1000_rx_ring *rx_ring, |
a292ca6e | 4088 | int cleaned_count) |
1da177e4 | 4089 | { |
1da177e4 LT |
4090 | struct net_device *netdev = adapter->netdev; |
4091 | struct pci_dev *pdev = adapter->pdev; | |
4092 | struct e1000_rx_desc *rx_desc; | |
4093 | struct e1000_buffer *buffer_info; | |
4094 | struct sk_buff *skb; | |
2648345f MC |
4095 | unsigned int i; |
4096 | unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN; | |
1da177e4 LT |
4097 | |
4098 | i = rx_ring->next_to_use; | |
4099 | buffer_info = &rx_ring->buffer_info[i]; | |
4100 | ||
a292ca6e | 4101 | while (cleaned_count--) { |
ca6f7224 CH |
4102 | skb = buffer_info->skb; |
4103 | if (skb) { | |
a292ca6e JK |
4104 | skb_trim(skb, 0); |
4105 | goto map_skb; | |
4106 | } | |
4107 | ||
ca6f7224 | 4108 | skb = netdev_alloc_skb(netdev, bufsz); |
96838a40 | 4109 | if (unlikely(!skb)) { |
1da177e4 | 4110 | /* Better luck next round */ |
72d64a43 | 4111 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
4112 | break; |
4113 | } | |
4114 | ||
2648345f | 4115 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
4116 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
4117 | struct sk_buff *oldskb = skb; | |
2648345f MC |
4118 | DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes " |
4119 | "at %p\n", bufsz, skb->data); | |
4120 | /* Try again, without freeing the previous */ | |
87f5032e | 4121 | skb = netdev_alloc_skb(netdev, bufsz); |
2648345f | 4122 | /* Failed allocation, critical failure */ |
1da177e4 LT |
4123 | if (!skb) { |
4124 | dev_kfree_skb(oldskb); | |
4125 | break; | |
4126 | } | |
2648345f | 4127 | |
1da177e4 LT |
4128 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
4129 | /* give up */ | |
4130 | dev_kfree_skb(skb); | |
4131 | dev_kfree_skb(oldskb); | |
4132 | break; /* while !buffer_info->skb */ | |
1da177e4 | 4133 | } |
ca6f7224 CH |
4134 | |
4135 | /* Use new allocation */ | |
4136 | dev_kfree_skb(oldskb); | |
1da177e4 | 4137 | } |
1da177e4 LT |
4138 | /* Make buffer alignment 2 beyond a 16 byte boundary |
4139 | * this will result in a 16 byte aligned IP header after | |
4140 | * the 14 byte MAC header is removed | |
4141 | */ | |
4142 | skb_reserve(skb, NET_IP_ALIGN); | |
4143 | ||
1da177e4 LT |
4144 | buffer_info->skb = skb; |
4145 | buffer_info->length = adapter->rx_buffer_len; | |
a292ca6e | 4146 | map_skb: |
1da177e4 LT |
4147 | buffer_info->dma = pci_map_single(pdev, |
4148 | skb->data, | |
4149 | adapter->rx_buffer_len, | |
4150 | PCI_DMA_FROMDEVICE); | |
4151 | ||
2648345f MC |
4152 | /* Fix for errata 23, can't cross 64kB boundary */ |
4153 | if (!e1000_check_64k_bound(adapter, | |
4154 | (void *)(unsigned long)buffer_info->dma, | |
4155 | adapter->rx_buffer_len)) { | |
4156 | DPRINTK(RX_ERR, ERR, | |
4157 | "dma align check failed: %u bytes at %p\n", | |
4158 | adapter->rx_buffer_len, | |
4159 | (void *)(unsigned long)buffer_info->dma); | |
1da177e4 LT |
4160 | dev_kfree_skb(skb); |
4161 | buffer_info->skb = NULL; | |
4162 | ||
2648345f | 4163 | pci_unmap_single(pdev, buffer_info->dma, |
1da177e4 LT |
4164 | adapter->rx_buffer_len, |
4165 | PCI_DMA_FROMDEVICE); | |
4166 | ||
4167 | break; /* while !buffer_info->skb */ | |
4168 | } | |
1da177e4 LT |
4169 | rx_desc = E1000_RX_DESC(*rx_ring, i); |
4170 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
4171 | ||
96838a40 JB |
4172 | if (unlikely(++i == rx_ring->count)) |
4173 | i = 0; | |
1da177e4 LT |
4174 | buffer_info = &rx_ring->buffer_info[i]; |
4175 | } | |
4176 | ||
b92ff8ee JB |
4177 | if (likely(rx_ring->next_to_use != i)) { |
4178 | rx_ring->next_to_use = i; | |
4179 | if (unlikely(i-- == 0)) | |
4180 | i = (rx_ring->count - 1); | |
4181 | ||
4182 | /* Force memory writes to complete before letting h/w | |
4183 | * know there are new descriptors to fetch. (Only | |
4184 | * applicable for weak-ordered memory model archs, | |
4185 | * such as IA-64). */ | |
4186 | wmb(); | |
4187 | writel(i, adapter->hw.hw_addr + rx_ring->rdt); | |
4188 | } | |
1da177e4 LT |
4189 | } |
4190 | ||
2d7edb92 MC |
4191 | /** |
4192 | * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split | |
4193 | * @adapter: address of board private structure | |
4194 | **/ | |
4195 | ||
4196 | static void | |
581d708e | 4197 | e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, |
72d64a43 JK |
4198 | struct e1000_rx_ring *rx_ring, |
4199 | int cleaned_count) | |
2d7edb92 | 4200 | { |
2d7edb92 MC |
4201 | struct net_device *netdev = adapter->netdev; |
4202 | struct pci_dev *pdev = adapter->pdev; | |
4203 | union e1000_rx_desc_packet_split *rx_desc; | |
4204 | struct e1000_buffer *buffer_info; | |
4205 | struct e1000_ps_page *ps_page; | |
4206 | struct e1000_ps_page_dma *ps_page_dma; | |
4207 | struct sk_buff *skb; | |
4208 | unsigned int i, j; | |
4209 | ||
4210 | i = rx_ring->next_to_use; | |
4211 | buffer_info = &rx_ring->buffer_info[i]; | |
4212 | ps_page = &rx_ring->ps_page[i]; | |
4213 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
4214 | ||
72d64a43 | 4215 | while (cleaned_count--) { |
2d7edb92 MC |
4216 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
4217 | ||
96838a40 | 4218 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
e4c811c9 MC |
4219 | if (j < adapter->rx_ps_pages) { |
4220 | if (likely(!ps_page->ps_page[j])) { | |
4221 | ps_page->ps_page[j] = | |
4222 | alloc_page(GFP_ATOMIC); | |
b92ff8ee JB |
4223 | if (unlikely(!ps_page->ps_page[j])) { |
4224 | adapter->alloc_rx_buff_failed++; | |
e4c811c9 | 4225 | goto no_buffers; |
b92ff8ee | 4226 | } |
e4c811c9 MC |
4227 | ps_page_dma->ps_page_dma[j] = |
4228 | pci_map_page(pdev, | |
4229 | ps_page->ps_page[j], | |
4230 | 0, PAGE_SIZE, | |
4231 | PCI_DMA_FROMDEVICE); | |
4232 | } | |
4233 | /* Refresh the desc even if buffer_addrs didn't | |
96838a40 | 4234 | * change because each write-back erases |
e4c811c9 MC |
4235 | * this info. |
4236 | */ | |
4237 | rx_desc->read.buffer_addr[j+1] = | |
4238 | cpu_to_le64(ps_page_dma->ps_page_dma[j]); | |
4239 | } else | |
4240 | rx_desc->read.buffer_addr[j+1] = ~0; | |
2d7edb92 MC |
4241 | } |
4242 | ||
87f5032e | 4243 | skb = netdev_alloc_skb(netdev, |
90fb5135 | 4244 | adapter->rx_ps_bsize0 + NET_IP_ALIGN); |
2d7edb92 | 4245 | |
b92ff8ee JB |
4246 | if (unlikely(!skb)) { |
4247 | adapter->alloc_rx_buff_failed++; | |
2d7edb92 | 4248 | break; |
b92ff8ee | 4249 | } |
2d7edb92 MC |
4250 | |
4251 | /* Make buffer alignment 2 beyond a 16 byte boundary | |
4252 | * this will result in a 16 byte aligned IP header after | |
4253 | * the 14 byte MAC header is removed | |
4254 | */ | |
4255 | skb_reserve(skb, NET_IP_ALIGN); | |
4256 | ||
2d7edb92 MC |
4257 | buffer_info->skb = skb; |
4258 | buffer_info->length = adapter->rx_ps_bsize0; | |
4259 | buffer_info->dma = pci_map_single(pdev, skb->data, | |
4260 | adapter->rx_ps_bsize0, | |
4261 | PCI_DMA_FROMDEVICE); | |
4262 | ||
4263 | rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); | |
4264 | ||
96838a40 | 4265 | if (unlikely(++i == rx_ring->count)) i = 0; |
2d7edb92 MC |
4266 | buffer_info = &rx_ring->buffer_info[i]; |
4267 | ps_page = &rx_ring->ps_page[i]; | |
4268 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
4269 | } | |
4270 | ||
4271 | no_buffers: | |
b92ff8ee JB |
4272 | if (likely(rx_ring->next_to_use != i)) { |
4273 | rx_ring->next_to_use = i; | |
4274 | if (unlikely(i-- == 0)) i = (rx_ring->count - 1); | |
4275 | ||
4276 | /* Force memory writes to complete before letting h/w | |
4277 | * know there are new descriptors to fetch. (Only | |
4278 | * applicable for weak-ordered memory model archs, | |
4279 | * such as IA-64). */ | |
4280 | wmb(); | |
4281 | /* Hardware increments by 16 bytes, but packet split | |
4282 | * descriptors are 32 bytes...so we increment tail | |
4283 | * twice as much. | |
4284 | */ | |
4285 | writel(i<<1, adapter->hw.hw_addr + rx_ring->rdt); | |
4286 | } | |
2d7edb92 MC |
4287 | } |
4288 | ||
1da177e4 LT |
4289 | /** |
4290 | * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. | |
4291 | * @adapter: | |
4292 | **/ | |
4293 | ||
4294 | static void | |
4295 | e1000_smartspeed(struct e1000_adapter *adapter) | |
4296 | { | |
4297 | uint16_t phy_status; | |
4298 | uint16_t phy_ctrl; | |
4299 | ||
96838a40 | 4300 | if ((adapter->hw.phy_type != e1000_phy_igp) || !adapter->hw.autoneg || |
1da177e4 LT |
4301 | !(adapter->hw.autoneg_advertised & ADVERTISE_1000_FULL)) |
4302 | return; | |
4303 | ||
96838a40 | 4304 | if (adapter->smartspeed == 0) { |
1da177e4 LT |
4305 | /* If Master/Slave config fault is asserted twice, |
4306 | * we assume back-to-back */ | |
4307 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); | |
96838a40 | 4308 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1da177e4 | 4309 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); |
96838a40 | 4310 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1da177e4 | 4311 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); |
96838a40 | 4312 | if (phy_ctrl & CR_1000T_MS_ENABLE) { |
1da177e4 LT |
4313 | phy_ctrl &= ~CR_1000T_MS_ENABLE; |
4314 | e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, | |
4315 | phy_ctrl); | |
4316 | adapter->smartspeed++; | |
96838a40 | 4317 | if (!e1000_phy_setup_autoneg(&adapter->hw) && |
1da177e4 LT |
4318 | !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, |
4319 | &phy_ctrl)) { | |
4320 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
4321 | MII_CR_RESTART_AUTO_NEG); | |
4322 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, | |
4323 | phy_ctrl); | |
4324 | } | |
4325 | } | |
4326 | return; | |
96838a40 | 4327 | } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { |
1da177e4 LT |
4328 | /* If still no link, perhaps using 2/3 pair cable */ |
4329 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); | |
4330 | phy_ctrl |= CR_1000T_MS_ENABLE; | |
4331 | e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_ctrl); | |
96838a40 | 4332 | if (!e1000_phy_setup_autoneg(&adapter->hw) && |
1da177e4 LT |
4333 | !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_ctrl)) { |
4334 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
4335 | MII_CR_RESTART_AUTO_NEG); | |
4336 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, phy_ctrl); | |
4337 | } | |
4338 | } | |
4339 | /* Restart process after E1000_SMARTSPEED_MAX iterations */ | |
96838a40 | 4340 | if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX) |
1da177e4 LT |
4341 | adapter->smartspeed = 0; |
4342 | } | |
4343 | ||
4344 | /** | |
4345 | * e1000_ioctl - | |
4346 | * @netdev: | |
4347 | * @ifreq: | |
4348 | * @cmd: | |
4349 | **/ | |
4350 | ||
4351 | static int | |
4352 | e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
4353 | { | |
4354 | switch (cmd) { | |
4355 | case SIOCGMIIPHY: | |
4356 | case SIOCGMIIREG: | |
4357 | case SIOCSMIIREG: | |
4358 | return e1000_mii_ioctl(netdev, ifr, cmd); | |
4359 | default: | |
4360 | return -EOPNOTSUPP; | |
4361 | } | |
4362 | } | |
4363 | ||
4364 | /** | |
4365 | * e1000_mii_ioctl - | |
4366 | * @netdev: | |
4367 | * @ifreq: | |
4368 | * @cmd: | |
4369 | **/ | |
4370 | ||
4371 | static int | |
4372 | e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
4373 | { | |
60490fe0 | 4374 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
4375 | struct mii_ioctl_data *data = if_mii(ifr); |
4376 | int retval; | |
4377 | uint16_t mii_reg; | |
4378 | uint16_t spddplx; | |
97876fc6 | 4379 | unsigned long flags; |
1da177e4 | 4380 | |
96838a40 | 4381 | if (adapter->hw.media_type != e1000_media_type_copper) |
1da177e4 LT |
4382 | return -EOPNOTSUPP; |
4383 | ||
4384 | switch (cmd) { | |
4385 | case SIOCGMIIPHY: | |
4386 | data->phy_id = adapter->hw.phy_addr; | |
4387 | break; | |
4388 | case SIOCGMIIREG: | |
96838a40 | 4389 | if (!capable(CAP_NET_ADMIN)) |
1da177e4 | 4390 | return -EPERM; |
97876fc6 | 4391 | spin_lock_irqsave(&adapter->stats_lock, flags); |
96838a40 | 4392 | if (e1000_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
97876fc6 MC |
4393 | &data->val_out)) { |
4394 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4395 | return -EIO; |
97876fc6 MC |
4396 | } |
4397 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 LT |
4398 | break; |
4399 | case SIOCSMIIREG: | |
96838a40 | 4400 | if (!capable(CAP_NET_ADMIN)) |
1da177e4 | 4401 | return -EPERM; |
96838a40 | 4402 | if (data->reg_num & ~(0x1F)) |
1da177e4 LT |
4403 | return -EFAULT; |
4404 | mii_reg = data->val_in; | |
97876fc6 | 4405 | spin_lock_irqsave(&adapter->stats_lock, flags); |
96838a40 | 4406 | if (e1000_write_phy_reg(&adapter->hw, data->reg_num, |
97876fc6 MC |
4407 | mii_reg)) { |
4408 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4409 | return -EIO; |
97876fc6 | 4410 | } |
dc86d32a | 4411 | if (adapter->hw.media_type == e1000_media_type_copper) { |
1da177e4 LT |
4412 | switch (data->reg_num) { |
4413 | case PHY_CTRL: | |
96838a40 | 4414 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4415 | break; |
96838a40 | 4416 | if (mii_reg & MII_CR_AUTO_NEG_EN) { |
1da177e4 LT |
4417 | adapter->hw.autoneg = 1; |
4418 | adapter->hw.autoneg_advertised = 0x2F; | |
4419 | } else { | |
4420 | if (mii_reg & 0x40) | |
4421 | spddplx = SPEED_1000; | |
4422 | else if (mii_reg & 0x2000) | |
4423 | spddplx = SPEED_100; | |
4424 | else | |
4425 | spddplx = SPEED_10; | |
4426 | spddplx += (mii_reg & 0x100) | |
cb764326 JK |
4427 | ? DUPLEX_FULL : |
4428 | DUPLEX_HALF; | |
1da177e4 LT |
4429 | retval = e1000_set_spd_dplx(adapter, |
4430 | spddplx); | |
96838a40 | 4431 | if (retval) { |
97876fc6 | 4432 | spin_unlock_irqrestore( |
96838a40 | 4433 | &adapter->stats_lock, |
97876fc6 | 4434 | flags); |
1da177e4 | 4435 | return retval; |
97876fc6 | 4436 | } |
1da177e4 | 4437 | } |
2db10a08 AK |
4438 | if (netif_running(adapter->netdev)) |
4439 | e1000_reinit_locked(adapter); | |
4440 | else | |
1da177e4 LT |
4441 | e1000_reset(adapter); |
4442 | break; | |
4443 | case M88E1000_PHY_SPEC_CTRL: | |
4444 | case M88E1000_EXT_PHY_SPEC_CTRL: | |
96838a40 | 4445 | if (e1000_phy_reset(&adapter->hw)) { |
97876fc6 MC |
4446 | spin_unlock_irqrestore( |
4447 | &adapter->stats_lock, flags); | |
1da177e4 | 4448 | return -EIO; |
97876fc6 | 4449 | } |
1da177e4 LT |
4450 | break; |
4451 | } | |
4452 | } else { | |
4453 | switch (data->reg_num) { | |
4454 | case PHY_CTRL: | |
96838a40 | 4455 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4456 | break; |
2db10a08 AK |
4457 | if (netif_running(adapter->netdev)) |
4458 | e1000_reinit_locked(adapter); | |
4459 | else | |
1da177e4 LT |
4460 | e1000_reset(adapter); |
4461 | break; | |
4462 | } | |
4463 | } | |
97876fc6 | 4464 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
1da177e4 LT |
4465 | break; |
4466 | default: | |
4467 | return -EOPNOTSUPP; | |
4468 | } | |
4469 | return E1000_SUCCESS; | |
4470 | } | |
4471 | ||
4472 | void | |
4473 | e1000_pci_set_mwi(struct e1000_hw *hw) | |
4474 | { | |
4475 | struct e1000_adapter *adapter = hw->back; | |
2648345f | 4476 | int ret_val = pci_set_mwi(adapter->pdev); |
1da177e4 | 4477 | |
96838a40 | 4478 | if (ret_val) |
2648345f | 4479 | DPRINTK(PROBE, ERR, "Error in setting MWI\n"); |
1da177e4 LT |
4480 | } |
4481 | ||
4482 | void | |
4483 | e1000_pci_clear_mwi(struct e1000_hw *hw) | |
4484 | { | |
4485 | struct e1000_adapter *adapter = hw->back; | |
4486 | ||
4487 | pci_clear_mwi(adapter->pdev); | |
4488 | } | |
4489 | ||
4490 | void | |
4491 | e1000_read_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) | |
4492 | { | |
4493 | struct e1000_adapter *adapter = hw->back; | |
4494 | ||
4495 | pci_read_config_word(adapter->pdev, reg, value); | |
4496 | } | |
4497 | ||
4498 | void | |
4499 | e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) | |
4500 | { | |
4501 | struct e1000_adapter *adapter = hw->back; | |
4502 | ||
4503 | pci_write_config_word(adapter->pdev, reg, *value); | |
4504 | } | |
4505 | ||
caeccb68 JK |
4506 | int32_t |
4507 | e1000_read_pcie_cap_reg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) | |
4508 | { | |
4509 | struct e1000_adapter *adapter = hw->back; | |
4510 | uint16_t cap_offset; | |
4511 | ||
4512 | cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP); | |
4513 | if (!cap_offset) | |
4514 | return -E1000_ERR_CONFIG; | |
4515 | ||
4516 | pci_read_config_word(adapter->pdev, cap_offset + reg, value); | |
4517 | ||
4518 | return E1000_SUCCESS; | |
4519 | } | |
4520 | ||
1da177e4 LT |
4521 | void |
4522 | e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value) | |
4523 | { | |
4524 | outl(value, port); | |
4525 | } | |
4526 | ||
4527 | static void | |
4528 | e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) | |
4529 | { | |
60490fe0 | 4530 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
4531 | uint32_t ctrl, rctl; |
4532 | ||
4533 | e1000_irq_disable(adapter); | |
4534 | adapter->vlgrp = grp; | |
4535 | ||
96838a40 | 4536 | if (grp) { |
1da177e4 LT |
4537 | /* enable VLAN tag insert/strip */ |
4538 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
4539 | ctrl |= E1000_CTRL_VME; | |
4540 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
4541 | ||
cd94dd0b | 4542 | if (adapter->hw.mac_type != e1000_ich8lan) { |
90fb5135 AK |
4543 | /* enable VLAN receive filtering */ |
4544 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
4545 | rctl |= E1000_RCTL_VFE; | |
4546 | rctl &= ~E1000_RCTL_CFIEN; | |
4547 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
4548 | e1000_update_mng_vlan(adapter); | |
cd94dd0b | 4549 | } |
1da177e4 LT |
4550 | } else { |
4551 | /* disable VLAN tag insert/strip */ | |
4552 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
4553 | ctrl &= ~E1000_CTRL_VME; | |
4554 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
4555 | ||
cd94dd0b | 4556 | if (adapter->hw.mac_type != e1000_ich8lan) { |
90fb5135 AK |
4557 | /* disable VLAN filtering */ |
4558 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
4559 | rctl &= ~E1000_RCTL_VFE; | |
4560 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
4561 | if (adapter->mng_vlan_id != | |
4562 | (uint16_t)E1000_MNG_VLAN_NONE) { | |
4563 | e1000_vlan_rx_kill_vid(netdev, | |
4564 | adapter->mng_vlan_id); | |
4565 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
4566 | } | |
cd94dd0b | 4567 | } |
1da177e4 LT |
4568 | } |
4569 | ||
4570 | e1000_irq_enable(adapter); | |
4571 | } | |
4572 | ||
4573 | static void | |
4574 | e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid) | |
4575 | { | |
60490fe0 | 4576 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 4577 | uint32_t vfta, index; |
96838a40 JB |
4578 | |
4579 | if ((adapter->hw.mng_cookie.status & | |
4580 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && | |
4581 | (vid == adapter->mng_vlan_id)) | |
2d7edb92 | 4582 | return; |
1da177e4 LT |
4583 | /* add VID to filter table */ |
4584 | index = (vid >> 5) & 0x7F; | |
4585 | vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
4586 | vfta |= (1 << (vid & 0x1F)); | |
4587 | e1000_write_vfta(&adapter->hw, index, vfta); | |
4588 | } | |
4589 | ||
4590 | static void | |
4591 | e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid) | |
4592 | { | |
60490fe0 | 4593 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
4594 | uint32_t vfta, index; |
4595 | ||
4596 | e1000_irq_disable(adapter); | |
4597 | ||
96838a40 | 4598 | if (adapter->vlgrp) |
1da177e4 LT |
4599 | adapter->vlgrp->vlan_devices[vid] = NULL; |
4600 | ||
4601 | e1000_irq_enable(adapter); | |
4602 | ||
96838a40 JB |
4603 | if ((adapter->hw.mng_cookie.status & |
4604 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && | |
ff147013 JK |
4605 | (vid == adapter->mng_vlan_id)) { |
4606 | /* release control to f/w */ | |
4607 | e1000_release_hw_control(adapter); | |
2d7edb92 | 4608 | return; |
ff147013 JK |
4609 | } |
4610 | ||
1da177e4 LT |
4611 | /* remove VID from filter table */ |
4612 | index = (vid >> 5) & 0x7F; | |
4613 | vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
4614 | vfta &= ~(1 << (vid & 0x1F)); | |
4615 | e1000_write_vfta(&adapter->hw, index, vfta); | |
4616 | } | |
4617 | ||
4618 | static void | |
4619 | e1000_restore_vlan(struct e1000_adapter *adapter) | |
4620 | { | |
4621 | e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
4622 | ||
96838a40 | 4623 | if (adapter->vlgrp) { |
1da177e4 | 4624 | uint16_t vid; |
96838a40 JB |
4625 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { |
4626 | if (!adapter->vlgrp->vlan_devices[vid]) | |
1da177e4 LT |
4627 | continue; |
4628 | e1000_vlan_rx_add_vid(adapter->netdev, vid); | |
4629 | } | |
4630 | } | |
4631 | } | |
4632 | ||
4633 | int | |
4634 | e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx) | |
4635 | { | |
4636 | adapter->hw.autoneg = 0; | |
4637 | ||
6921368f | 4638 | /* Fiber NICs only allow 1000 gbps Full duplex */ |
96838a40 | 4639 | if ((adapter->hw.media_type == e1000_media_type_fiber) && |
6921368f MC |
4640 | spddplx != (SPEED_1000 + DUPLEX_FULL)) { |
4641 | DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); | |
4642 | return -EINVAL; | |
4643 | } | |
4644 | ||
96838a40 | 4645 | switch (spddplx) { |
1da177e4 LT |
4646 | case SPEED_10 + DUPLEX_HALF: |
4647 | adapter->hw.forced_speed_duplex = e1000_10_half; | |
4648 | break; | |
4649 | case SPEED_10 + DUPLEX_FULL: | |
4650 | adapter->hw.forced_speed_duplex = e1000_10_full; | |
4651 | break; | |
4652 | case SPEED_100 + DUPLEX_HALF: | |
4653 | adapter->hw.forced_speed_duplex = e1000_100_half; | |
4654 | break; | |
4655 | case SPEED_100 + DUPLEX_FULL: | |
4656 | adapter->hw.forced_speed_duplex = e1000_100_full; | |
4657 | break; | |
4658 | case SPEED_1000 + DUPLEX_FULL: | |
4659 | adapter->hw.autoneg = 1; | |
4660 | adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL; | |
4661 | break; | |
4662 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ | |
4663 | default: | |
2648345f | 4664 | DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); |
1da177e4 LT |
4665 | return -EINVAL; |
4666 | } | |
4667 | return 0; | |
4668 | } | |
4669 | ||
b6a1d5f8 | 4670 | #ifdef CONFIG_PM |
0f15a8fa JK |
4671 | /* Save/restore 16 or 64 dwords of PCI config space depending on which |
4672 | * bus we're on (PCI(X) vs. PCI-E) | |
2f82665f JB |
4673 | */ |
4674 | #define PCIE_CONFIG_SPACE_LEN 256 | |
4675 | #define PCI_CONFIG_SPACE_LEN 64 | |
4676 | static int | |
4677 | e1000_pci_save_state(struct e1000_adapter *adapter) | |
4678 | { | |
4679 | struct pci_dev *dev = adapter->pdev; | |
4680 | int size; | |
4681 | int i; | |
0f15a8fa | 4682 | |
2f82665f JB |
4683 | if (adapter->hw.mac_type >= e1000_82571) |
4684 | size = PCIE_CONFIG_SPACE_LEN; | |
4685 | else | |
4686 | size = PCI_CONFIG_SPACE_LEN; | |
4687 | ||
4688 | WARN_ON(adapter->config_space != NULL); | |
4689 | ||
4690 | adapter->config_space = kmalloc(size, GFP_KERNEL); | |
4691 | if (!adapter->config_space) { | |
4692 | DPRINTK(PROBE, ERR, "unable to allocate %d bytes\n", size); | |
4693 | return -ENOMEM; | |
4694 | } | |
4695 | for (i = 0; i < (size / 4); i++) | |
4696 | pci_read_config_dword(dev, i * 4, &adapter->config_space[i]); | |
4697 | return 0; | |
4698 | } | |
4699 | ||
4700 | static void | |
4701 | e1000_pci_restore_state(struct e1000_adapter *adapter) | |
4702 | { | |
4703 | struct pci_dev *dev = adapter->pdev; | |
4704 | int size; | |
4705 | int i; | |
0f15a8fa | 4706 | |
2f82665f JB |
4707 | if (adapter->config_space == NULL) |
4708 | return; | |
0f15a8fa | 4709 | |
2f82665f JB |
4710 | if (adapter->hw.mac_type >= e1000_82571) |
4711 | size = PCIE_CONFIG_SPACE_LEN; | |
4712 | else | |
4713 | size = PCI_CONFIG_SPACE_LEN; | |
4714 | for (i = 0; i < (size / 4); i++) | |
4715 | pci_write_config_dword(dev, i * 4, adapter->config_space[i]); | |
4716 | kfree(adapter->config_space); | |
4717 | adapter->config_space = NULL; | |
4718 | return; | |
4719 | } | |
4720 | #endif /* CONFIG_PM */ | |
4721 | ||
1da177e4 | 4722 | static int |
829ca9a3 | 4723 | e1000_suspend(struct pci_dev *pdev, pm_message_t state) |
1da177e4 LT |
4724 | { |
4725 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 4726 | struct e1000_adapter *adapter = netdev_priv(netdev); |
b55ccb35 | 4727 | uint32_t ctrl, ctrl_ext, rctl, manc, status; |
1da177e4 | 4728 | uint32_t wufc = adapter->wol; |
6fdfef16 | 4729 | #ifdef CONFIG_PM |
240b1710 | 4730 | int retval = 0; |
6fdfef16 | 4731 | #endif |
1da177e4 LT |
4732 | |
4733 | netif_device_detach(netdev); | |
4734 | ||
2db10a08 AK |
4735 | if (netif_running(netdev)) { |
4736 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); | |
1da177e4 | 4737 | e1000_down(adapter); |
2db10a08 | 4738 | } |
1da177e4 | 4739 | |
2f82665f | 4740 | #ifdef CONFIG_PM |
0f15a8fa JK |
4741 | /* Implement our own version of pci_save_state(pdev) because pci- |
4742 | * express adapters have 256-byte config spaces. */ | |
2f82665f JB |
4743 | retval = e1000_pci_save_state(adapter); |
4744 | if (retval) | |
4745 | return retval; | |
4746 | #endif | |
4747 | ||
1da177e4 | 4748 | status = E1000_READ_REG(&adapter->hw, STATUS); |
96838a40 | 4749 | if (status & E1000_STATUS_LU) |
1da177e4 LT |
4750 | wufc &= ~E1000_WUFC_LNKC; |
4751 | ||
96838a40 | 4752 | if (wufc) { |
1da177e4 LT |
4753 | e1000_setup_rctl(adapter); |
4754 | e1000_set_multi(netdev); | |
4755 | ||
4756 | /* turn on all-multi mode if wake on multicast is enabled */ | |
120cd576 | 4757 | if (wufc & E1000_WUFC_MC) { |
1da177e4 LT |
4758 | rctl = E1000_READ_REG(&adapter->hw, RCTL); |
4759 | rctl |= E1000_RCTL_MPE; | |
4760 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
4761 | } | |
4762 | ||
96838a40 | 4763 | if (adapter->hw.mac_type >= e1000_82540) { |
1da177e4 LT |
4764 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); |
4765 | /* advertise wake from D3Cold */ | |
4766 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
4767 | /* phy power management enable */ | |
4768 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
4769 | ctrl |= E1000_CTRL_ADVD3WUC | | |
4770 | E1000_CTRL_EN_PHY_PWR_MGMT; | |
4771 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
4772 | } | |
4773 | ||
96838a40 | 4774 | if (adapter->hw.media_type == e1000_media_type_fiber || |
1da177e4 LT |
4775 | adapter->hw.media_type == e1000_media_type_internal_serdes) { |
4776 | /* keep the laser running in D3 */ | |
4777 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); | |
4778 | ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; | |
4779 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, ctrl_ext); | |
4780 | } | |
4781 | ||
2d7edb92 MC |
4782 | /* Allow time for pending master requests to run */ |
4783 | e1000_disable_pciex_master(&adapter->hw); | |
4784 | ||
1da177e4 LT |
4785 | E1000_WRITE_REG(&adapter->hw, WUC, E1000_WUC_PME_EN); |
4786 | E1000_WRITE_REG(&adapter->hw, WUFC, wufc); | |
d0e027db AK |
4787 | pci_enable_wake(pdev, PCI_D3hot, 1); |
4788 | pci_enable_wake(pdev, PCI_D3cold, 1); | |
1da177e4 LT |
4789 | } else { |
4790 | E1000_WRITE_REG(&adapter->hw, WUC, 0); | |
4791 | E1000_WRITE_REG(&adapter->hw, WUFC, 0); | |
d0e027db AK |
4792 | pci_enable_wake(pdev, PCI_D3hot, 0); |
4793 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
1da177e4 LT |
4794 | } |
4795 | ||
4ccc12ae JB |
4796 | if (adapter->hw.mac_type >= e1000_82540 && |
4797 | adapter->hw.mac_type < e1000_82571 && | |
4798 | adapter->hw.media_type == e1000_media_type_copper) { | |
1da177e4 | 4799 | manc = E1000_READ_REG(&adapter->hw, MANC); |
96838a40 | 4800 | if (manc & E1000_MANC_SMBUS_EN) { |
1da177e4 LT |
4801 | manc |= E1000_MANC_ARP_EN; |
4802 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
d0e027db AK |
4803 | pci_enable_wake(pdev, PCI_D3hot, 1); |
4804 | pci_enable_wake(pdev, PCI_D3cold, 1); | |
1da177e4 LT |
4805 | } |
4806 | } | |
4807 | ||
cd94dd0b AK |
4808 | if (adapter->hw.phy_type == e1000_phy_igp_3) |
4809 | e1000_phy_powerdown_workaround(&adapter->hw); | |
4810 | ||
edd106fc AK |
4811 | if (netif_running(netdev)) |
4812 | e1000_free_irq(adapter); | |
4813 | ||
b55ccb35 JK |
4814 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
4815 | * would have already happened in close and is redundant. */ | |
4816 | e1000_release_hw_control(adapter); | |
2d7edb92 | 4817 | |
1da177e4 | 4818 | pci_disable_device(pdev); |
240b1710 | 4819 | |
d0e027db | 4820 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); |
1da177e4 LT |
4821 | |
4822 | return 0; | |
4823 | } | |
4824 | ||
2f82665f | 4825 | #ifdef CONFIG_PM |
1da177e4 LT |
4826 | static int |
4827 | e1000_resume(struct pci_dev *pdev) | |
4828 | { | |
4829 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 4830 | struct e1000_adapter *adapter = netdev_priv(netdev); |
3d1dd8cb | 4831 | uint32_t manc, err; |
1da177e4 | 4832 | |
d0e027db | 4833 | pci_set_power_state(pdev, PCI_D0); |
2f82665f | 4834 | e1000_pci_restore_state(adapter); |
3d1dd8cb AK |
4835 | if ((err = pci_enable_device(pdev))) { |
4836 | printk(KERN_ERR "e1000: Cannot enable PCI device from suspend\n"); | |
4837 | return err; | |
4838 | } | |
a4cb847d | 4839 | pci_set_master(pdev); |
1da177e4 | 4840 | |
d0e027db AK |
4841 | pci_enable_wake(pdev, PCI_D3hot, 0); |
4842 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
1da177e4 | 4843 | |
edd106fc AK |
4844 | if (netif_running(netdev) && (err = e1000_request_irq(adapter))) |
4845 | return err; | |
4846 | ||
4847 | e1000_power_up_phy(adapter); | |
1da177e4 LT |
4848 | e1000_reset(adapter); |
4849 | E1000_WRITE_REG(&adapter->hw, WUS, ~0); | |
4850 | ||
96838a40 | 4851 | if (netif_running(netdev)) |
1da177e4 LT |
4852 | e1000_up(adapter); |
4853 | ||
4854 | netif_device_attach(netdev); | |
4855 | ||
4ccc12ae JB |
4856 | if (adapter->hw.mac_type >= e1000_82540 && |
4857 | adapter->hw.mac_type < e1000_82571 && | |
4858 | adapter->hw.media_type == e1000_media_type_copper) { | |
1da177e4 LT |
4859 | manc = E1000_READ_REG(&adapter->hw, MANC); |
4860 | manc &= ~(E1000_MANC_ARP_EN); | |
4861 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
4862 | } | |
4863 | ||
b55ccb35 JK |
4864 | /* If the controller is 82573 and f/w is AMT, do not set |
4865 | * DRV_LOAD until the interface is up. For all other cases, | |
4866 | * let the f/w know that the h/w is now under the control | |
4867 | * of the driver. */ | |
4868 | if (adapter->hw.mac_type != e1000_82573 || | |
4869 | !e1000_check_mng_mode(&adapter->hw)) | |
4870 | e1000_get_hw_control(adapter); | |
2d7edb92 | 4871 | |
1da177e4 LT |
4872 | return 0; |
4873 | } | |
4874 | #endif | |
c653e635 AK |
4875 | |
4876 | static void e1000_shutdown(struct pci_dev *pdev) | |
4877 | { | |
4878 | e1000_suspend(pdev, PMSG_SUSPEND); | |
4879 | } | |
4880 | ||
1da177e4 LT |
4881 | #ifdef CONFIG_NET_POLL_CONTROLLER |
4882 | /* | |
4883 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
4884 | * without having to re-enable interrupts. It's not called while | |
4885 | * the interrupt routine is executing. | |
4886 | */ | |
4887 | static void | |
2648345f | 4888 | e1000_netpoll(struct net_device *netdev) |
1da177e4 | 4889 | { |
60490fe0 | 4890 | struct e1000_adapter *adapter = netdev_priv(netdev); |
d3d9e484 | 4891 | |
1da177e4 | 4892 | disable_irq(adapter->pdev->irq); |
7d12e780 | 4893 | e1000_intr(adapter->pdev->irq, netdev); |
c4cfe567 | 4894 | e1000_clean_tx_irq(adapter, adapter->tx_ring); |
e8da8be1 JK |
4895 | #ifndef CONFIG_E1000_NAPI |
4896 | adapter->clean_rx(adapter, adapter->rx_ring); | |
4897 | #endif | |
1da177e4 LT |
4898 | enable_irq(adapter->pdev->irq); |
4899 | } | |
4900 | #endif | |
4901 | ||
9026729b AK |
4902 | /** |
4903 | * e1000_io_error_detected - called when PCI error is detected | |
4904 | * @pdev: Pointer to PCI device | |
4905 | * @state: The current pci conneection state | |
4906 | * | |
4907 | * This function is called after a PCI bus error affecting | |
4908 | * this device has been detected. | |
4909 | */ | |
4910 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state) | |
4911 | { | |
4912 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4913 | struct e1000_adapter *adapter = netdev->priv; | |
4914 | ||
4915 | netif_device_detach(netdev); | |
4916 | ||
4917 | if (netif_running(netdev)) | |
4918 | e1000_down(adapter); | |
72e8d6bb | 4919 | pci_disable_device(pdev); |
9026729b AK |
4920 | |
4921 | /* Request a slot slot reset. */ | |
4922 | return PCI_ERS_RESULT_NEED_RESET; | |
4923 | } | |
4924 | ||
4925 | /** | |
4926 | * e1000_io_slot_reset - called after the pci bus has been reset. | |
4927 | * @pdev: Pointer to PCI device | |
4928 | * | |
4929 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
4930 | * resembles the first-half of the e1000_resume routine. | |
4931 | */ | |
4932 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) | |
4933 | { | |
4934 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4935 | struct e1000_adapter *adapter = netdev->priv; | |
4936 | ||
4937 | if (pci_enable_device(pdev)) { | |
4938 | printk(KERN_ERR "e1000: Cannot re-enable PCI device after reset.\n"); | |
4939 | return PCI_ERS_RESULT_DISCONNECT; | |
4940 | } | |
4941 | pci_set_master(pdev); | |
4942 | ||
dbf38c94 LV |
4943 | pci_enable_wake(pdev, PCI_D3hot, 0); |
4944 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
9026729b | 4945 | |
9026729b AK |
4946 | e1000_reset(adapter); |
4947 | E1000_WRITE_REG(&adapter->hw, WUS, ~0); | |
4948 | ||
4949 | return PCI_ERS_RESULT_RECOVERED; | |
4950 | } | |
4951 | ||
4952 | /** | |
4953 | * e1000_io_resume - called when traffic can start flowing again. | |
4954 | * @pdev: Pointer to PCI device | |
4955 | * | |
4956 | * This callback is called when the error recovery driver tells us that | |
4957 | * its OK to resume normal operation. Implementation resembles the | |
4958 | * second-half of the e1000_resume routine. | |
4959 | */ | |
4960 | static void e1000_io_resume(struct pci_dev *pdev) | |
4961 | { | |
4962 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4963 | struct e1000_adapter *adapter = netdev->priv; | |
4964 | uint32_t manc, swsm; | |
4965 | ||
4966 | if (netif_running(netdev)) { | |
4967 | if (e1000_up(adapter)) { | |
4968 | printk("e1000: can't bring device back up after reset\n"); | |
4969 | return; | |
4970 | } | |
4971 | } | |
4972 | ||
4973 | netif_device_attach(netdev); | |
4974 | ||
4975 | if (adapter->hw.mac_type >= e1000_82540 && | |
4ccc12ae | 4976 | adapter->hw.mac_type < e1000_82571 && |
9026729b AK |
4977 | adapter->hw.media_type == e1000_media_type_copper) { |
4978 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
4979 | manc &= ~(E1000_MANC_ARP_EN); | |
4980 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
4981 | } | |
4982 | ||
4983 | switch (adapter->hw.mac_type) { | |
4984 | case e1000_82573: | |
4985 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
4986 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
4987 | swsm | E1000_SWSM_DRV_LOAD); | |
4988 | break; | |
4989 | default: | |
4990 | break; | |
4991 | } | |
4992 | ||
4993 | if (netif_running(netdev)) | |
4994 | mod_timer(&adapter->watchdog_timer, jiffies); | |
4995 | } | |
4996 | ||
1da177e4 | 4997 | /* e1000_main.c */ |