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Commit | Line | Data |
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1da177e4 LT |
1 | /******************************************************************************* |
2 | ||
3 | ||
3d41e30a | 4 | Copyright(c) 1999 - 2006 Intel Corporation. All rights reserved. |
1da177e4 LT |
5 | |
6 | This program is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU General Public License as published by the Free | |
8 | Software Foundation; either version 2 of the License, or (at your option) | |
9 | any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, but WITHOUT | |
12 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
14 | more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License along with | |
17 | this program; if not, write to the Free Software Foundation, Inc., 59 | |
18 | Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
19 | ||
20 | The full GNU General Public License is included in this distribution in the | |
21 | file called LICENSE. | |
22 | ||
23 | Contact Information: | |
24 | Linux NICS <linux.nics@intel.com> | |
3d41e30a | 25 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
1da177e4 LT |
26 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
27 | ||
28 | *******************************************************************************/ | |
29 | ||
30 | #include "e1000.h" | |
31 | ||
1da177e4 | 32 | char e1000_driver_name[] = "e1000"; |
3ad2cc67 | 33 | static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver"; |
1da177e4 LT |
34 | #ifndef CONFIG_E1000_NAPI |
35 | #define DRIVERNAPI | |
36 | #else | |
37 | #define DRIVERNAPI "-NAPI" | |
38 | #endif | |
440c052d | 39 | #define DRV_VERSION "7.0.38-k4"DRIVERNAPI |
1da177e4 | 40 | char e1000_driver_version[] = DRV_VERSION; |
3d41e30a | 41 | static char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation."; |
1da177e4 LT |
42 | |
43 | /* e1000_pci_tbl - PCI Device ID Table | |
44 | * | |
45 | * Last entry must be all 0s | |
46 | * | |
47 | * Macro expands to... | |
48 | * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)} | |
49 | */ | |
50 | static struct pci_device_id e1000_pci_tbl[] = { | |
51 | INTEL_E1000_ETHERNET_DEVICE(0x1000), | |
52 | INTEL_E1000_ETHERNET_DEVICE(0x1001), | |
53 | INTEL_E1000_ETHERNET_DEVICE(0x1004), | |
54 | INTEL_E1000_ETHERNET_DEVICE(0x1008), | |
55 | INTEL_E1000_ETHERNET_DEVICE(0x1009), | |
56 | INTEL_E1000_ETHERNET_DEVICE(0x100C), | |
57 | INTEL_E1000_ETHERNET_DEVICE(0x100D), | |
58 | INTEL_E1000_ETHERNET_DEVICE(0x100E), | |
59 | INTEL_E1000_ETHERNET_DEVICE(0x100F), | |
60 | INTEL_E1000_ETHERNET_DEVICE(0x1010), | |
61 | INTEL_E1000_ETHERNET_DEVICE(0x1011), | |
62 | INTEL_E1000_ETHERNET_DEVICE(0x1012), | |
63 | INTEL_E1000_ETHERNET_DEVICE(0x1013), | |
64 | INTEL_E1000_ETHERNET_DEVICE(0x1014), | |
65 | INTEL_E1000_ETHERNET_DEVICE(0x1015), | |
66 | INTEL_E1000_ETHERNET_DEVICE(0x1016), | |
67 | INTEL_E1000_ETHERNET_DEVICE(0x1017), | |
68 | INTEL_E1000_ETHERNET_DEVICE(0x1018), | |
69 | INTEL_E1000_ETHERNET_DEVICE(0x1019), | |
2648345f | 70 | INTEL_E1000_ETHERNET_DEVICE(0x101A), |
1da177e4 LT |
71 | INTEL_E1000_ETHERNET_DEVICE(0x101D), |
72 | INTEL_E1000_ETHERNET_DEVICE(0x101E), | |
73 | INTEL_E1000_ETHERNET_DEVICE(0x1026), | |
74 | INTEL_E1000_ETHERNET_DEVICE(0x1027), | |
75 | INTEL_E1000_ETHERNET_DEVICE(0x1028), | |
07b8fede MC |
76 | INTEL_E1000_ETHERNET_DEVICE(0x105E), |
77 | INTEL_E1000_ETHERNET_DEVICE(0x105F), | |
78 | INTEL_E1000_ETHERNET_DEVICE(0x1060), | |
1da177e4 LT |
79 | INTEL_E1000_ETHERNET_DEVICE(0x1075), |
80 | INTEL_E1000_ETHERNET_DEVICE(0x1076), | |
81 | INTEL_E1000_ETHERNET_DEVICE(0x1077), | |
82 | INTEL_E1000_ETHERNET_DEVICE(0x1078), | |
83 | INTEL_E1000_ETHERNET_DEVICE(0x1079), | |
84 | INTEL_E1000_ETHERNET_DEVICE(0x107A), | |
85 | INTEL_E1000_ETHERNET_DEVICE(0x107B), | |
86 | INTEL_E1000_ETHERNET_DEVICE(0x107C), | |
07b8fede MC |
87 | INTEL_E1000_ETHERNET_DEVICE(0x107D), |
88 | INTEL_E1000_ETHERNET_DEVICE(0x107E), | |
89 | INTEL_E1000_ETHERNET_DEVICE(0x107F), | |
1da177e4 | 90 | INTEL_E1000_ETHERNET_DEVICE(0x108A), |
2648345f MC |
91 | INTEL_E1000_ETHERNET_DEVICE(0x108B), |
92 | INTEL_E1000_ETHERNET_DEVICE(0x108C), | |
6418ecc6 JK |
93 | INTEL_E1000_ETHERNET_DEVICE(0x1096), |
94 | INTEL_E1000_ETHERNET_DEVICE(0x1098), | |
b7ee49db | 95 | INTEL_E1000_ETHERNET_DEVICE(0x1099), |
07b8fede | 96 | INTEL_E1000_ETHERNET_DEVICE(0x109A), |
b7ee49db | 97 | INTEL_E1000_ETHERNET_DEVICE(0x10B5), |
6418ecc6 | 98 | INTEL_E1000_ETHERNET_DEVICE(0x10B9), |
1da177e4 LT |
99 | /* required last entry */ |
100 | {0,} | |
101 | }; | |
102 | ||
103 | MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); | |
104 | ||
3ad2cc67 | 105 | static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
0f15a8fa | 106 | struct e1000_tx_ring *txdr); |
3ad2cc67 | 107 | static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
0f15a8fa | 108 | struct e1000_rx_ring *rxdr); |
3ad2cc67 | 109 | static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
0f15a8fa | 110 | struct e1000_tx_ring *tx_ring); |
3ad2cc67 | 111 | static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
0f15a8fa | 112 | struct e1000_rx_ring *rx_ring); |
1da177e4 LT |
113 | |
114 | /* Local Function Prototypes */ | |
115 | ||
116 | static int e1000_init_module(void); | |
117 | static void e1000_exit_module(void); | |
118 | static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent); | |
119 | static void __devexit e1000_remove(struct pci_dev *pdev); | |
581d708e | 120 | static int e1000_alloc_queues(struct e1000_adapter *adapter); |
1da177e4 LT |
121 | static int e1000_sw_init(struct e1000_adapter *adapter); |
122 | static int e1000_open(struct net_device *netdev); | |
123 | static int e1000_close(struct net_device *netdev); | |
124 | static void e1000_configure_tx(struct e1000_adapter *adapter); | |
125 | static void e1000_configure_rx(struct e1000_adapter *adapter); | |
126 | static void e1000_setup_rctl(struct e1000_adapter *adapter); | |
581d708e MC |
127 | static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter); |
128 | static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter); | |
129 | static void e1000_clean_tx_ring(struct e1000_adapter *adapter, | |
130 | struct e1000_tx_ring *tx_ring); | |
131 | static void e1000_clean_rx_ring(struct e1000_adapter *adapter, | |
132 | struct e1000_rx_ring *rx_ring); | |
1da177e4 LT |
133 | static void e1000_set_multi(struct net_device *netdev); |
134 | static void e1000_update_phy_info(unsigned long data); | |
135 | static void e1000_watchdog(unsigned long data); | |
1da177e4 LT |
136 | static void e1000_82547_tx_fifo_stall(unsigned long data); |
137 | static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev); | |
138 | static struct net_device_stats * e1000_get_stats(struct net_device *netdev); | |
139 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu); | |
140 | static int e1000_set_mac(struct net_device *netdev, void *p); | |
141 | static irqreturn_t e1000_intr(int irq, void *data, struct pt_regs *regs); | |
581d708e MC |
142 | static boolean_t e1000_clean_tx_irq(struct e1000_adapter *adapter, |
143 | struct e1000_tx_ring *tx_ring); | |
1da177e4 | 144 | #ifdef CONFIG_E1000_NAPI |
581d708e | 145 | static int e1000_clean(struct net_device *poll_dev, int *budget); |
1da177e4 | 146 | static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter, |
581d708e | 147 | struct e1000_rx_ring *rx_ring, |
1da177e4 | 148 | int *work_done, int work_to_do); |
2d7edb92 | 149 | static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
581d708e | 150 | struct e1000_rx_ring *rx_ring, |
2d7edb92 | 151 | int *work_done, int work_to_do); |
1da177e4 | 152 | #else |
581d708e MC |
153 | static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter, |
154 | struct e1000_rx_ring *rx_ring); | |
155 | static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, | |
156 | struct e1000_rx_ring *rx_ring); | |
1da177e4 | 157 | #endif |
581d708e | 158 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
72d64a43 JK |
159 | struct e1000_rx_ring *rx_ring, |
160 | int cleaned_count); | |
581d708e | 161 | static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, |
72d64a43 JK |
162 | struct e1000_rx_ring *rx_ring, |
163 | int cleaned_count); | |
1da177e4 LT |
164 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); |
165 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
166 | int cmd); | |
1da177e4 LT |
167 | static void e1000_enter_82542_rst(struct e1000_adapter *adapter); |
168 | static void e1000_leave_82542_rst(struct e1000_adapter *adapter); | |
169 | static void e1000_tx_timeout(struct net_device *dev); | |
87041639 | 170 | static void e1000_reset_task(struct net_device *dev); |
1da177e4 | 171 | static void e1000_smartspeed(struct e1000_adapter *adapter); |
e619d523 AK |
172 | static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
173 | struct sk_buff *skb); | |
1da177e4 LT |
174 | |
175 | static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp); | |
176 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid); | |
177 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid); | |
178 | static void e1000_restore_vlan(struct e1000_adapter *adapter); | |
179 | ||
977e74b5 | 180 | static int e1000_suspend(struct pci_dev *pdev, pm_message_t state); |
6fdfef16 | 181 | #ifdef CONFIG_PM |
1da177e4 LT |
182 | static int e1000_resume(struct pci_dev *pdev); |
183 | #endif | |
c653e635 | 184 | static void e1000_shutdown(struct pci_dev *pdev); |
1da177e4 LT |
185 | |
186 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
187 | /* for netdump / net console */ | |
188 | static void e1000_netpoll (struct net_device *netdev); | |
189 | #endif | |
190 | ||
9026729b AK |
191 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
192 | pci_channel_state_t state); | |
193 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev); | |
194 | static void e1000_io_resume(struct pci_dev *pdev); | |
195 | ||
196 | static struct pci_error_handlers e1000_err_handler = { | |
197 | .error_detected = e1000_io_error_detected, | |
198 | .slot_reset = e1000_io_slot_reset, | |
199 | .resume = e1000_io_resume, | |
200 | }; | |
24025e4e | 201 | |
1da177e4 LT |
202 | static struct pci_driver e1000_driver = { |
203 | .name = e1000_driver_name, | |
204 | .id_table = e1000_pci_tbl, | |
205 | .probe = e1000_probe, | |
206 | .remove = __devexit_p(e1000_remove), | |
207 | /* Power Managment Hooks */ | |
1da177e4 | 208 | .suspend = e1000_suspend, |
6fdfef16 | 209 | #ifdef CONFIG_PM |
c653e635 | 210 | .resume = e1000_resume, |
1da177e4 | 211 | #endif |
9026729b AK |
212 | .shutdown = e1000_shutdown, |
213 | .err_handler = &e1000_err_handler | |
1da177e4 LT |
214 | }; |
215 | ||
216 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
217 | MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); | |
218 | MODULE_LICENSE("GPL"); | |
219 | MODULE_VERSION(DRV_VERSION); | |
220 | ||
221 | static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; | |
222 | module_param(debug, int, 0); | |
223 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
224 | ||
225 | /** | |
226 | * e1000_init_module - Driver Registration Routine | |
227 | * | |
228 | * e1000_init_module is the first routine called when the driver is | |
229 | * loaded. All it does is register with the PCI subsystem. | |
230 | **/ | |
231 | ||
232 | static int __init | |
233 | e1000_init_module(void) | |
234 | { | |
235 | int ret; | |
236 | printk(KERN_INFO "%s - version %s\n", | |
237 | e1000_driver_string, e1000_driver_version); | |
238 | ||
239 | printk(KERN_INFO "%s\n", e1000_copyright); | |
240 | ||
241 | ret = pci_module_init(&e1000_driver); | |
8b378def | 242 | |
1da177e4 LT |
243 | return ret; |
244 | } | |
245 | ||
246 | module_init(e1000_init_module); | |
247 | ||
248 | /** | |
249 | * e1000_exit_module - Driver Exit Cleanup Routine | |
250 | * | |
251 | * e1000_exit_module is called just before the driver is removed | |
252 | * from memory. | |
253 | **/ | |
254 | ||
255 | static void __exit | |
256 | e1000_exit_module(void) | |
257 | { | |
1da177e4 LT |
258 | pci_unregister_driver(&e1000_driver); |
259 | } | |
260 | ||
261 | module_exit(e1000_exit_module); | |
262 | ||
2db10a08 AK |
263 | static int e1000_request_irq(struct e1000_adapter *adapter) |
264 | { | |
265 | struct net_device *netdev = adapter->netdev; | |
266 | int flags, err = 0; | |
267 | ||
268 | flags = SA_SHIRQ | SA_SAMPLE_RANDOM; | |
269 | #ifdef CONFIG_PCI_MSI | |
270 | if (adapter->hw.mac_type > e1000_82547_rev_2) { | |
271 | adapter->have_msi = TRUE; | |
272 | if ((err = pci_enable_msi(adapter->pdev))) { | |
273 | DPRINTK(PROBE, ERR, | |
274 | "Unable to allocate MSI interrupt Error: %d\n", err); | |
275 | adapter->have_msi = FALSE; | |
276 | } | |
277 | } | |
278 | if (adapter->have_msi) | |
279 | flags &= ~SA_SHIRQ; | |
280 | #endif | |
281 | if ((err = request_irq(adapter->pdev->irq, &e1000_intr, flags, | |
282 | netdev->name, netdev))) | |
283 | DPRINTK(PROBE, ERR, | |
284 | "Unable to allocate interrupt Error: %d\n", err); | |
285 | ||
286 | return err; | |
287 | } | |
288 | ||
289 | static void e1000_free_irq(struct e1000_adapter *adapter) | |
290 | { | |
291 | struct net_device *netdev = adapter->netdev; | |
292 | ||
293 | free_irq(adapter->pdev->irq, netdev); | |
294 | ||
295 | #ifdef CONFIG_PCI_MSI | |
296 | if (adapter->have_msi) | |
297 | pci_disable_msi(adapter->pdev); | |
298 | #endif | |
299 | } | |
300 | ||
1da177e4 LT |
301 | /** |
302 | * e1000_irq_disable - Mask off interrupt generation on the NIC | |
303 | * @adapter: board private structure | |
304 | **/ | |
305 | ||
e619d523 | 306 | static void |
1da177e4 LT |
307 | e1000_irq_disable(struct e1000_adapter *adapter) |
308 | { | |
309 | atomic_inc(&adapter->irq_sem); | |
310 | E1000_WRITE_REG(&adapter->hw, IMC, ~0); | |
311 | E1000_WRITE_FLUSH(&adapter->hw); | |
312 | synchronize_irq(adapter->pdev->irq); | |
313 | } | |
314 | ||
315 | /** | |
316 | * e1000_irq_enable - Enable default interrupt generation settings | |
317 | * @adapter: board private structure | |
318 | **/ | |
319 | ||
e619d523 | 320 | static void |
1da177e4 LT |
321 | e1000_irq_enable(struct e1000_adapter *adapter) |
322 | { | |
96838a40 | 323 | if (likely(atomic_dec_and_test(&adapter->irq_sem))) { |
1da177e4 LT |
324 | E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK); |
325 | E1000_WRITE_FLUSH(&adapter->hw); | |
326 | } | |
327 | } | |
3ad2cc67 AB |
328 | |
329 | static void | |
2d7edb92 MC |
330 | e1000_update_mng_vlan(struct e1000_adapter *adapter) |
331 | { | |
332 | struct net_device *netdev = adapter->netdev; | |
333 | uint16_t vid = adapter->hw.mng_cookie.vlan_id; | |
334 | uint16_t old_vid = adapter->mng_vlan_id; | |
96838a40 JB |
335 | if (adapter->vlgrp) { |
336 | if (!adapter->vlgrp->vlan_devices[vid]) { | |
337 | if (adapter->hw.mng_cookie.status & | |
2d7edb92 MC |
338 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) { |
339 | e1000_vlan_rx_add_vid(netdev, vid); | |
340 | adapter->mng_vlan_id = vid; | |
341 | } else | |
342 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
96838a40 JB |
343 | |
344 | if ((old_vid != (uint16_t)E1000_MNG_VLAN_NONE) && | |
345 | (vid != old_vid) && | |
2d7edb92 MC |
346 | !adapter->vlgrp->vlan_devices[old_vid]) |
347 | e1000_vlan_rx_kill_vid(netdev, old_vid); | |
c5f226fe JK |
348 | } else |
349 | adapter->mng_vlan_id = vid; | |
2d7edb92 MC |
350 | } |
351 | } | |
b55ccb35 JK |
352 | |
353 | /** | |
354 | * e1000_release_hw_control - release control of the h/w to f/w | |
355 | * @adapter: address of board private structure | |
356 | * | |
357 | * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit. | |
358 | * For ASF and Pass Through versions of f/w this means that the | |
359 | * driver is no longer loaded. For AMT version (only with 82573) i | |
360 | * of the f/w this means that the netowrk i/f is closed. | |
76c224bc | 361 | * |
b55ccb35 JK |
362 | **/ |
363 | ||
e619d523 | 364 | static void |
b55ccb35 JK |
365 | e1000_release_hw_control(struct e1000_adapter *adapter) |
366 | { | |
367 | uint32_t ctrl_ext; | |
368 | uint32_t swsm; | |
369 | ||
370 | /* Let firmware taken over control of h/w */ | |
371 | switch (adapter->hw.mac_type) { | |
372 | case e1000_82571: | |
373 | case e1000_82572: | |
4cc15f54 | 374 | case e1000_80003es2lan: |
b55ccb35 JK |
375 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); |
376 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, | |
377 | ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); | |
378 | break; | |
379 | case e1000_82573: | |
380 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
381 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
382 | swsm & ~E1000_SWSM_DRV_LOAD); | |
383 | default: | |
384 | break; | |
385 | } | |
386 | } | |
387 | ||
388 | /** | |
389 | * e1000_get_hw_control - get control of the h/w from f/w | |
390 | * @adapter: address of board private structure | |
391 | * | |
392 | * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit. | |
76c224bc AK |
393 | * For ASF and Pass Through versions of f/w this means that |
394 | * the driver is loaded. For AMT version (only with 82573) | |
b55ccb35 | 395 | * of the f/w this means that the netowrk i/f is open. |
76c224bc | 396 | * |
b55ccb35 JK |
397 | **/ |
398 | ||
e619d523 | 399 | static void |
b55ccb35 JK |
400 | e1000_get_hw_control(struct e1000_adapter *adapter) |
401 | { | |
402 | uint32_t ctrl_ext; | |
403 | uint32_t swsm; | |
404 | /* Let firmware know the driver has taken over */ | |
405 | switch (adapter->hw.mac_type) { | |
406 | case e1000_82571: | |
407 | case e1000_82572: | |
4cc15f54 | 408 | case e1000_80003es2lan: |
b55ccb35 JK |
409 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); |
410 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, | |
411 | ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); | |
412 | break; | |
413 | case e1000_82573: | |
414 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
415 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
416 | swsm | E1000_SWSM_DRV_LOAD); | |
417 | break; | |
418 | default: | |
419 | break; | |
420 | } | |
421 | } | |
422 | ||
1da177e4 LT |
423 | int |
424 | e1000_up(struct e1000_adapter *adapter) | |
425 | { | |
426 | struct net_device *netdev = adapter->netdev; | |
2db10a08 | 427 | int i; |
1da177e4 LT |
428 | |
429 | /* hardware has been reset, we need to reload some things */ | |
430 | ||
1da177e4 LT |
431 | e1000_set_multi(netdev); |
432 | ||
433 | e1000_restore_vlan(adapter); | |
434 | ||
435 | e1000_configure_tx(adapter); | |
436 | e1000_setup_rctl(adapter); | |
437 | e1000_configure_rx(adapter); | |
72d64a43 JK |
438 | /* call E1000_DESC_UNUSED which always leaves |
439 | * at least 1 descriptor unused to make sure | |
440 | * next_to_use != next_to_clean */ | |
f56799ea | 441 | for (i = 0; i < adapter->num_rx_queues; i++) { |
72d64a43 | 442 | struct e1000_rx_ring *ring = &adapter->rx_ring[i]; |
a292ca6e JK |
443 | adapter->alloc_rx_buf(adapter, ring, |
444 | E1000_DESC_UNUSED(ring)); | |
f56799ea | 445 | } |
1da177e4 | 446 | |
7bfa4816 JK |
447 | adapter->tx_queue_len = netdev->tx_queue_len; |
448 | ||
1da177e4 | 449 | mod_timer(&adapter->watchdog_timer, jiffies); |
1da177e4 LT |
450 | |
451 | #ifdef CONFIG_E1000_NAPI | |
452 | netif_poll_enable(netdev); | |
453 | #endif | |
5de55624 MC |
454 | e1000_irq_enable(adapter); |
455 | ||
1da177e4 LT |
456 | return 0; |
457 | } | |
458 | ||
79f05bf0 AK |
459 | /** |
460 | * e1000_power_up_phy - restore link in case the phy was powered down | |
461 | * @adapter: address of board private structure | |
462 | * | |
463 | * The phy may be powered down to save power and turn off link when the | |
464 | * driver is unloaded and wake on lan is not enabled (among others) | |
465 | * *** this routine MUST be followed by a call to e1000_reset *** | |
466 | * | |
467 | **/ | |
468 | ||
469 | static void e1000_power_up_phy(struct e1000_adapter *adapter) | |
470 | { | |
471 | uint16_t mii_reg = 0; | |
472 | ||
473 | /* Just clear the power down bit to wake the phy back up */ | |
474 | if (adapter->hw.media_type == e1000_media_type_copper) { | |
475 | /* according to the manual, the phy will retain its | |
476 | * settings across a power-down/up cycle */ | |
477 | e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); | |
478 | mii_reg &= ~MII_CR_POWER_DOWN; | |
479 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg); | |
480 | } | |
481 | } | |
482 | ||
483 | static void e1000_power_down_phy(struct e1000_adapter *adapter) | |
484 | { | |
485 | boolean_t mng_mode_enabled = (adapter->hw.mac_type >= e1000_82571) && | |
486 | e1000_check_mng_mode(&adapter->hw); | |
487 | /* Power down the PHY so no link is implied when interface is down | |
488 | * The PHY cannot be powered down if any of the following is TRUE | |
489 | * (a) WoL is enabled | |
490 | * (b) AMT is active | |
491 | * (c) SoL/IDER session is active */ | |
492 | if (!adapter->wol && adapter->hw.mac_type >= e1000_82540 && | |
493 | adapter->hw.media_type == e1000_media_type_copper && | |
494 | !(E1000_READ_REG(&adapter->hw, MANC) & E1000_MANC_SMBUS_EN) && | |
495 | !mng_mode_enabled && | |
496 | !e1000_check_phy_reset_block(&adapter->hw)) { | |
497 | uint16_t mii_reg = 0; | |
498 | e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); | |
499 | mii_reg |= MII_CR_POWER_DOWN; | |
500 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg); | |
501 | mdelay(1); | |
502 | } | |
503 | } | |
504 | ||
1da177e4 LT |
505 | void |
506 | e1000_down(struct e1000_adapter *adapter) | |
507 | { | |
508 | struct net_device *netdev = adapter->netdev; | |
509 | ||
510 | e1000_irq_disable(adapter); | |
c1605eb3 | 511 | |
1da177e4 LT |
512 | del_timer_sync(&adapter->tx_fifo_stall_timer); |
513 | del_timer_sync(&adapter->watchdog_timer); | |
514 | del_timer_sync(&adapter->phy_info_timer); | |
515 | ||
516 | #ifdef CONFIG_E1000_NAPI | |
517 | netif_poll_disable(netdev); | |
518 | #endif | |
7bfa4816 | 519 | netdev->tx_queue_len = adapter->tx_queue_len; |
1da177e4 LT |
520 | adapter->link_speed = 0; |
521 | adapter->link_duplex = 0; | |
522 | netif_carrier_off(netdev); | |
523 | netif_stop_queue(netdev); | |
524 | ||
525 | e1000_reset(adapter); | |
581d708e MC |
526 | e1000_clean_all_tx_rings(adapter); |
527 | e1000_clean_all_rx_rings(adapter); | |
1da177e4 LT |
528 | } |
529 | ||
2db10a08 AK |
530 | void |
531 | e1000_reinit_locked(struct e1000_adapter *adapter) | |
532 | { | |
533 | WARN_ON(in_interrupt()); | |
534 | while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) | |
535 | msleep(1); | |
536 | e1000_down(adapter); | |
537 | e1000_up(adapter); | |
538 | clear_bit(__E1000_RESETTING, &adapter->flags); | |
539 | } | |
540 | ||
1da177e4 LT |
541 | void |
542 | e1000_reset(struct e1000_adapter *adapter) | |
543 | { | |
2d7edb92 | 544 | uint32_t pba, manc; |
1125ecbc | 545 | uint16_t fc_high_water_mark = E1000_FC_HIGH_DIFF; |
1da177e4 LT |
546 | |
547 | /* Repartition Pba for greater than 9k mtu | |
548 | * To take effect CTRL.RST is required. | |
549 | */ | |
550 | ||
2d7edb92 MC |
551 | switch (adapter->hw.mac_type) { |
552 | case e1000_82547: | |
0e6ef3e0 | 553 | case e1000_82547_rev_2: |
2d7edb92 MC |
554 | pba = E1000_PBA_30K; |
555 | break; | |
868d5309 MC |
556 | case e1000_82571: |
557 | case e1000_82572: | |
6418ecc6 | 558 | case e1000_80003es2lan: |
868d5309 MC |
559 | pba = E1000_PBA_38K; |
560 | break; | |
2d7edb92 MC |
561 | case e1000_82573: |
562 | pba = E1000_PBA_12K; | |
563 | break; | |
564 | default: | |
565 | pba = E1000_PBA_48K; | |
566 | break; | |
567 | } | |
568 | ||
96838a40 | 569 | if ((adapter->hw.mac_type != e1000_82573) && |
f11b7f85 | 570 | (adapter->netdev->mtu > E1000_RXBUFFER_8192)) |
1125ecbc | 571 | pba -= 8; /* allocate more FIFO for Tx */ |
2d7edb92 MC |
572 | |
573 | ||
96838a40 | 574 | if (adapter->hw.mac_type == e1000_82547) { |
1da177e4 LT |
575 | adapter->tx_fifo_head = 0; |
576 | adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; | |
577 | adapter->tx_fifo_size = | |
578 | (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; | |
579 | atomic_set(&adapter->tx_fifo_stall, 0); | |
580 | } | |
2d7edb92 | 581 | |
1da177e4 LT |
582 | E1000_WRITE_REG(&adapter->hw, PBA, pba); |
583 | ||
584 | /* flow control settings */ | |
f11b7f85 JK |
585 | /* Set the FC high water mark to 90% of the FIFO size. |
586 | * Required to clear last 3 LSB */ | |
587 | fc_high_water_mark = ((pba * 9216)/10) & 0xFFF8; | |
588 | ||
589 | adapter->hw.fc_high_water = fc_high_water_mark; | |
590 | adapter->hw.fc_low_water = fc_high_water_mark - 8; | |
87041639 JK |
591 | if (adapter->hw.mac_type == e1000_80003es2lan) |
592 | adapter->hw.fc_pause_time = 0xFFFF; | |
593 | else | |
594 | adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME; | |
1da177e4 LT |
595 | adapter->hw.fc_send_xon = 1; |
596 | adapter->hw.fc = adapter->hw.original_fc; | |
597 | ||
2d7edb92 | 598 | /* Allow time for pending master requests to run */ |
1da177e4 | 599 | e1000_reset_hw(&adapter->hw); |
96838a40 | 600 | if (adapter->hw.mac_type >= e1000_82544) |
1da177e4 | 601 | E1000_WRITE_REG(&adapter->hw, WUC, 0); |
96838a40 | 602 | if (e1000_init_hw(&adapter->hw)) |
1da177e4 | 603 | DPRINTK(PROBE, ERR, "Hardware Error\n"); |
2d7edb92 | 604 | e1000_update_mng_vlan(adapter); |
1da177e4 LT |
605 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
606 | E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE); | |
607 | ||
608 | e1000_reset_adaptive(&adapter->hw); | |
609 | e1000_phy_get_info(&adapter->hw, &adapter->phy_info); | |
9a53a202 AK |
610 | |
611 | if (!adapter->smart_power_down && | |
612 | (adapter->hw.mac_type == e1000_82571 || | |
613 | adapter->hw.mac_type == e1000_82572)) { | |
614 | uint16_t phy_data = 0; | |
615 | /* speed up time to link by disabling smart power down, ignore | |
616 | * the return value of this function because there is nothing | |
617 | * different we would do if it failed */ | |
618 | e1000_read_phy_reg(&adapter->hw, IGP02E1000_PHY_POWER_MGMT, | |
619 | &phy_data); | |
620 | phy_data &= ~IGP02E1000_PM_SPD; | |
621 | e1000_write_phy_reg(&adapter->hw, IGP02E1000_PHY_POWER_MGMT, | |
622 | phy_data); | |
623 | } | |
624 | ||
2d7edb92 MC |
625 | if (adapter->en_mng_pt) { |
626 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
627 | manc |= (E1000_MANC_ARP_EN | E1000_MANC_EN_MNG2HOST); | |
628 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
629 | } | |
1da177e4 LT |
630 | } |
631 | ||
632 | /** | |
633 | * e1000_probe - Device Initialization Routine | |
634 | * @pdev: PCI device information struct | |
635 | * @ent: entry in e1000_pci_tbl | |
636 | * | |
637 | * Returns 0 on success, negative on failure | |
638 | * | |
639 | * e1000_probe initializes an adapter identified by a pci_dev structure. | |
640 | * The OS initialization, configuring of the adapter private structure, | |
641 | * and a hardware reset occur. | |
642 | **/ | |
643 | ||
644 | static int __devinit | |
645 | e1000_probe(struct pci_dev *pdev, | |
646 | const struct pci_device_id *ent) | |
647 | { | |
648 | struct net_device *netdev; | |
649 | struct e1000_adapter *adapter; | |
2d7edb92 | 650 | unsigned long mmio_start, mmio_len; |
2d7edb92 | 651 | |
1da177e4 | 652 | static int cards_found = 0; |
84916829 | 653 | static int e1000_ksp3_port_a = 0; /* global ksp3 port a indication */ |
2d7edb92 | 654 | int i, err, pci_using_dac; |
1da177e4 LT |
655 | uint16_t eeprom_data; |
656 | uint16_t eeprom_apme_mask = E1000_EEPROM_APME; | |
96838a40 | 657 | if ((err = pci_enable_device(pdev))) |
1da177e4 LT |
658 | return err; |
659 | ||
96838a40 | 660 | if (!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) { |
1da177e4 LT |
661 | pci_using_dac = 1; |
662 | } else { | |
96838a40 | 663 | if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK))) { |
1da177e4 LT |
664 | E1000_ERR("No usable DMA configuration, aborting\n"); |
665 | return err; | |
666 | } | |
667 | pci_using_dac = 0; | |
668 | } | |
669 | ||
96838a40 | 670 | if ((err = pci_request_regions(pdev, e1000_driver_name))) |
1da177e4 LT |
671 | return err; |
672 | ||
673 | pci_set_master(pdev); | |
674 | ||
675 | netdev = alloc_etherdev(sizeof(struct e1000_adapter)); | |
96838a40 | 676 | if (!netdev) { |
1da177e4 LT |
677 | err = -ENOMEM; |
678 | goto err_alloc_etherdev; | |
679 | } | |
680 | ||
681 | SET_MODULE_OWNER(netdev); | |
682 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
683 | ||
684 | pci_set_drvdata(pdev, netdev); | |
60490fe0 | 685 | adapter = netdev_priv(netdev); |
1da177e4 LT |
686 | adapter->netdev = netdev; |
687 | adapter->pdev = pdev; | |
688 | adapter->hw.back = adapter; | |
689 | adapter->msg_enable = (1 << debug) - 1; | |
690 | ||
691 | mmio_start = pci_resource_start(pdev, BAR_0); | |
692 | mmio_len = pci_resource_len(pdev, BAR_0); | |
693 | ||
694 | adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); | |
96838a40 | 695 | if (!adapter->hw.hw_addr) { |
1da177e4 LT |
696 | err = -EIO; |
697 | goto err_ioremap; | |
698 | } | |
699 | ||
96838a40 JB |
700 | for (i = BAR_1; i <= BAR_5; i++) { |
701 | if (pci_resource_len(pdev, i) == 0) | |
1da177e4 | 702 | continue; |
96838a40 | 703 | if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { |
1da177e4 LT |
704 | adapter->hw.io_base = pci_resource_start(pdev, i); |
705 | break; | |
706 | } | |
707 | } | |
708 | ||
709 | netdev->open = &e1000_open; | |
710 | netdev->stop = &e1000_close; | |
711 | netdev->hard_start_xmit = &e1000_xmit_frame; | |
712 | netdev->get_stats = &e1000_get_stats; | |
713 | netdev->set_multicast_list = &e1000_set_multi; | |
714 | netdev->set_mac_address = &e1000_set_mac; | |
715 | netdev->change_mtu = &e1000_change_mtu; | |
716 | netdev->do_ioctl = &e1000_ioctl; | |
717 | e1000_set_ethtool_ops(netdev); | |
718 | netdev->tx_timeout = &e1000_tx_timeout; | |
719 | netdev->watchdog_timeo = 5 * HZ; | |
720 | #ifdef CONFIG_E1000_NAPI | |
721 | netdev->poll = &e1000_clean; | |
722 | netdev->weight = 64; | |
723 | #endif | |
724 | netdev->vlan_rx_register = e1000_vlan_rx_register; | |
725 | netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid; | |
726 | netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid; | |
727 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
728 | netdev->poll_controller = e1000_netpoll; | |
729 | #endif | |
730 | strcpy(netdev->name, pci_name(pdev)); | |
731 | ||
732 | netdev->mem_start = mmio_start; | |
733 | netdev->mem_end = mmio_start + mmio_len; | |
734 | netdev->base_addr = adapter->hw.io_base; | |
735 | ||
736 | adapter->bd_number = cards_found; | |
737 | ||
738 | /* setup the private structure */ | |
739 | ||
96838a40 | 740 | if ((err = e1000_sw_init(adapter))) |
1da177e4 LT |
741 | goto err_sw_init; |
742 | ||
96838a40 | 743 | if ((err = e1000_check_phy_reset_block(&adapter->hw))) |
2d7edb92 MC |
744 | DPRINTK(PROBE, INFO, "PHY reset is blocked due to SOL/IDER session.\n"); |
745 | ||
84916829 | 746 | /* if ksp3, indicate if it's port a being setup */ |
76c224bc AK |
747 | if (pdev->device == E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3 && |
748 | e1000_ksp3_port_a == 0) | |
84916829 JK |
749 | adapter->ksp3_port_a = 1; |
750 | e1000_ksp3_port_a++; | |
751 | /* Reset for multiple KP3 adapters */ | |
752 | if (e1000_ksp3_port_a == 4) | |
753 | e1000_ksp3_port_a = 0; | |
754 | ||
96838a40 | 755 | if (adapter->hw.mac_type >= e1000_82543) { |
1da177e4 LT |
756 | netdev->features = NETIF_F_SG | |
757 | NETIF_F_HW_CSUM | | |
758 | NETIF_F_HW_VLAN_TX | | |
759 | NETIF_F_HW_VLAN_RX | | |
760 | NETIF_F_HW_VLAN_FILTER; | |
761 | } | |
762 | ||
763 | #ifdef NETIF_F_TSO | |
96838a40 | 764 | if ((adapter->hw.mac_type >= e1000_82544) && |
1da177e4 LT |
765 | (adapter->hw.mac_type != e1000_82547)) |
766 | netdev->features |= NETIF_F_TSO; | |
2d7edb92 MC |
767 | |
768 | #ifdef NETIF_F_TSO_IPV6 | |
96838a40 | 769 | if (adapter->hw.mac_type > e1000_82547_rev_2) |
2d7edb92 MC |
770 | netdev->features |= NETIF_F_TSO_IPV6; |
771 | #endif | |
1da177e4 | 772 | #endif |
96838a40 | 773 | if (pci_using_dac) |
1da177e4 LT |
774 | netdev->features |= NETIF_F_HIGHDMA; |
775 | ||
76c224bc AK |
776 | /* hard_start_xmit is safe against parallel locking */ |
777 | netdev->features |= NETIF_F_LLTX; | |
778 | ||
2d7edb92 MC |
779 | adapter->en_mng_pt = e1000_enable_mng_pass_thru(&adapter->hw); |
780 | ||
96838a40 | 781 | /* before reading the EEPROM, reset the controller to |
1da177e4 | 782 | * put the device in a known good starting state */ |
96838a40 | 783 | |
1da177e4 LT |
784 | e1000_reset_hw(&adapter->hw); |
785 | ||
786 | /* make sure the EEPROM is good */ | |
787 | ||
96838a40 | 788 | if (e1000_validate_eeprom_checksum(&adapter->hw) < 0) { |
1da177e4 LT |
789 | DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n"); |
790 | err = -EIO; | |
791 | goto err_eeprom; | |
792 | } | |
793 | ||
794 | /* copy the MAC address out of the EEPROM */ | |
795 | ||
96838a40 | 796 | if (e1000_read_mac_addr(&adapter->hw)) |
1da177e4 LT |
797 | DPRINTK(PROBE, ERR, "EEPROM Read Error\n"); |
798 | memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); | |
9beb0ac1 | 799 | memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len); |
1da177e4 | 800 | |
96838a40 | 801 | if (!is_valid_ether_addr(netdev->perm_addr)) { |
1da177e4 LT |
802 | DPRINTK(PROBE, ERR, "Invalid MAC Address\n"); |
803 | err = -EIO; | |
804 | goto err_eeprom; | |
805 | } | |
806 | ||
807 | e1000_read_part_num(&adapter->hw, &(adapter->part_num)); | |
808 | ||
809 | e1000_get_bus_info(&adapter->hw); | |
810 | ||
811 | init_timer(&adapter->tx_fifo_stall_timer); | |
812 | adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall; | |
813 | adapter->tx_fifo_stall_timer.data = (unsigned long) adapter; | |
814 | ||
815 | init_timer(&adapter->watchdog_timer); | |
816 | adapter->watchdog_timer.function = &e1000_watchdog; | |
817 | adapter->watchdog_timer.data = (unsigned long) adapter; | |
818 | ||
1da177e4 LT |
819 | init_timer(&adapter->phy_info_timer); |
820 | adapter->phy_info_timer.function = &e1000_update_phy_info; | |
821 | adapter->phy_info_timer.data = (unsigned long) adapter; | |
822 | ||
87041639 JK |
823 | INIT_WORK(&adapter->reset_task, |
824 | (void (*)(void *))e1000_reset_task, netdev); | |
1da177e4 LT |
825 | |
826 | /* we're going to reset, so assume we have no link for now */ | |
827 | ||
828 | netif_carrier_off(netdev); | |
829 | netif_stop_queue(netdev); | |
830 | ||
831 | e1000_check_options(adapter); | |
832 | ||
833 | /* Initial Wake on LAN setting | |
834 | * If APM wake is enabled in the EEPROM, | |
835 | * enable the ACPI Magic Packet filter | |
836 | */ | |
837 | ||
96838a40 | 838 | switch (adapter->hw.mac_type) { |
1da177e4 LT |
839 | case e1000_82542_rev2_0: |
840 | case e1000_82542_rev2_1: | |
841 | case e1000_82543: | |
842 | break; | |
843 | case e1000_82544: | |
844 | e1000_read_eeprom(&adapter->hw, | |
845 | EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); | |
846 | eeprom_apme_mask = E1000_EEPROM_82544_APM; | |
847 | break; | |
848 | case e1000_82546: | |
849 | case e1000_82546_rev_3: | |
fd803241 | 850 | case e1000_82571: |
6418ecc6 | 851 | case e1000_80003es2lan: |
96838a40 | 852 | if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1){ |
1da177e4 LT |
853 | e1000_read_eeprom(&adapter->hw, |
854 | EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); | |
855 | break; | |
856 | } | |
857 | /* Fall Through */ | |
858 | default: | |
859 | e1000_read_eeprom(&adapter->hw, | |
860 | EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); | |
861 | break; | |
862 | } | |
96838a40 | 863 | if (eeprom_data & eeprom_apme_mask) |
1da177e4 LT |
864 | adapter->wol |= E1000_WUFC_MAG; |
865 | ||
fb3d47d4 JK |
866 | /* print bus type/speed/width info */ |
867 | { | |
868 | struct e1000_hw *hw = &adapter->hw; | |
869 | DPRINTK(PROBE, INFO, "(PCI%s:%s:%s) ", | |
870 | ((hw->bus_type == e1000_bus_type_pcix) ? "-X" : | |
871 | (hw->bus_type == e1000_bus_type_pci_express ? " Express":"")), | |
872 | ((hw->bus_speed == e1000_bus_speed_2500) ? "2.5Gb/s" : | |
873 | (hw->bus_speed == e1000_bus_speed_133) ? "133MHz" : | |
874 | (hw->bus_speed == e1000_bus_speed_120) ? "120MHz" : | |
875 | (hw->bus_speed == e1000_bus_speed_100) ? "100MHz" : | |
876 | (hw->bus_speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"), | |
877 | ((hw->bus_width == e1000_bus_width_64) ? "64-bit" : | |
878 | (hw->bus_width == e1000_bus_width_pciex_4) ? "Width x4" : | |
879 | (hw->bus_width == e1000_bus_width_pciex_1) ? "Width x1" : | |
880 | "32-bit")); | |
881 | } | |
882 | ||
883 | for (i = 0; i < 6; i++) | |
884 | printk("%2.2x%c", netdev->dev_addr[i], i == 5 ? '\n' : ':'); | |
885 | ||
1da177e4 LT |
886 | /* reset the hardware with the new settings */ |
887 | e1000_reset(adapter); | |
888 | ||
b55ccb35 JK |
889 | /* If the controller is 82573 and f/w is AMT, do not set |
890 | * DRV_LOAD until the interface is up. For all other cases, | |
891 | * let the f/w know that the h/w is now under the control | |
892 | * of the driver. */ | |
893 | if (adapter->hw.mac_type != e1000_82573 || | |
894 | !e1000_check_mng_mode(&adapter->hw)) | |
895 | e1000_get_hw_control(adapter); | |
2d7edb92 | 896 | |
1da177e4 | 897 | strcpy(netdev->name, "eth%d"); |
96838a40 | 898 | if ((err = register_netdev(netdev))) |
1da177e4 LT |
899 | goto err_register; |
900 | ||
901 | DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n"); | |
902 | ||
903 | cards_found++; | |
904 | return 0; | |
905 | ||
906 | err_register: | |
907 | err_sw_init: | |
908 | err_eeprom: | |
909 | iounmap(adapter->hw.hw_addr); | |
910 | err_ioremap: | |
911 | free_netdev(netdev); | |
912 | err_alloc_etherdev: | |
913 | pci_release_regions(pdev); | |
914 | return err; | |
915 | } | |
916 | ||
917 | /** | |
918 | * e1000_remove - Device Removal Routine | |
919 | * @pdev: PCI device information struct | |
920 | * | |
921 | * e1000_remove is called by the PCI subsystem to alert the driver | |
922 | * that it should release a PCI device. The could be caused by a | |
923 | * Hot-Plug event, or because the driver is going to be removed from | |
924 | * memory. | |
925 | **/ | |
926 | ||
927 | static void __devexit | |
928 | e1000_remove(struct pci_dev *pdev) | |
929 | { | |
930 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 931 | struct e1000_adapter *adapter = netdev_priv(netdev); |
b55ccb35 | 932 | uint32_t manc; |
581d708e MC |
933 | #ifdef CONFIG_E1000_NAPI |
934 | int i; | |
935 | #endif | |
1da177e4 | 936 | |
be2b28ed JG |
937 | flush_scheduled_work(); |
938 | ||
96838a40 | 939 | if (adapter->hw.mac_type >= e1000_82540 && |
1da177e4 LT |
940 | adapter->hw.media_type == e1000_media_type_copper) { |
941 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
96838a40 | 942 | if (manc & E1000_MANC_SMBUS_EN) { |
1da177e4 LT |
943 | manc |= E1000_MANC_ARP_EN; |
944 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
945 | } | |
946 | } | |
947 | ||
b55ccb35 JK |
948 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
949 | * would have already happened in close and is redundant. */ | |
950 | e1000_release_hw_control(adapter); | |
2d7edb92 | 951 | |
1da177e4 | 952 | unregister_netdev(netdev); |
581d708e | 953 | #ifdef CONFIG_E1000_NAPI |
f56799ea | 954 | for (i = 0; i < adapter->num_rx_queues; i++) |
15333061 | 955 | dev_put(&adapter->polling_netdev[i]); |
581d708e | 956 | #endif |
1da177e4 | 957 | |
96838a40 | 958 | if (!e1000_check_phy_reset_block(&adapter->hw)) |
2d7edb92 | 959 | e1000_phy_hw_reset(&adapter->hw); |
1da177e4 | 960 | |
24025e4e MC |
961 | kfree(adapter->tx_ring); |
962 | kfree(adapter->rx_ring); | |
963 | #ifdef CONFIG_E1000_NAPI | |
964 | kfree(adapter->polling_netdev); | |
965 | #endif | |
966 | ||
1da177e4 LT |
967 | iounmap(adapter->hw.hw_addr); |
968 | pci_release_regions(pdev); | |
969 | ||
970 | free_netdev(netdev); | |
971 | ||
972 | pci_disable_device(pdev); | |
973 | } | |
974 | ||
975 | /** | |
976 | * e1000_sw_init - Initialize general software structures (struct e1000_adapter) | |
977 | * @adapter: board private structure to initialize | |
978 | * | |
979 | * e1000_sw_init initializes the Adapter private data structure. | |
980 | * Fields are initialized based on PCI device information and | |
981 | * OS network device settings (MTU size). | |
982 | **/ | |
983 | ||
984 | static int __devinit | |
985 | e1000_sw_init(struct e1000_adapter *adapter) | |
986 | { | |
987 | struct e1000_hw *hw = &adapter->hw; | |
988 | struct net_device *netdev = adapter->netdev; | |
989 | struct pci_dev *pdev = adapter->pdev; | |
581d708e MC |
990 | #ifdef CONFIG_E1000_NAPI |
991 | int i; | |
992 | #endif | |
1da177e4 LT |
993 | |
994 | /* PCI config space info */ | |
995 | ||
996 | hw->vendor_id = pdev->vendor; | |
997 | hw->device_id = pdev->device; | |
998 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
999 | hw->subsystem_id = pdev->subsystem_device; | |
1000 | ||
1001 | pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); | |
1002 | ||
1003 | pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); | |
1004 | ||
9e2feace AK |
1005 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_FRAME_SIZE; |
1006 | adapter->rx_ps_bsize0 = E1000_RXBUFFER_128; | |
1da177e4 LT |
1007 | hw->max_frame_size = netdev->mtu + |
1008 | ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; | |
1009 | hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; | |
1010 | ||
1011 | /* identify the MAC */ | |
1012 | ||
96838a40 | 1013 | if (e1000_set_mac_type(hw)) { |
1da177e4 LT |
1014 | DPRINTK(PROBE, ERR, "Unknown MAC Type\n"); |
1015 | return -EIO; | |
1016 | } | |
1017 | ||
1018 | /* initialize eeprom parameters */ | |
1019 | ||
96838a40 | 1020 | if (e1000_init_eeprom_params(hw)) { |
2d7edb92 MC |
1021 | E1000_ERR("EEPROM initialization failed\n"); |
1022 | return -EIO; | |
1023 | } | |
1da177e4 | 1024 | |
96838a40 | 1025 | switch (hw->mac_type) { |
1da177e4 LT |
1026 | default: |
1027 | break; | |
1028 | case e1000_82541: | |
1029 | case e1000_82547: | |
1030 | case e1000_82541_rev_2: | |
1031 | case e1000_82547_rev_2: | |
1032 | hw->phy_init_script = 1; | |
1033 | break; | |
1034 | } | |
1035 | ||
1036 | e1000_set_media_type(hw); | |
1037 | ||
1038 | hw->wait_autoneg_complete = FALSE; | |
1039 | hw->tbi_compatibility_en = TRUE; | |
1040 | hw->adaptive_ifs = TRUE; | |
1041 | ||
1042 | /* Copper options */ | |
1043 | ||
96838a40 | 1044 | if (hw->media_type == e1000_media_type_copper) { |
1da177e4 LT |
1045 | hw->mdix = AUTO_ALL_MODES; |
1046 | hw->disable_polarity_correction = FALSE; | |
1047 | hw->master_slave = E1000_MASTER_SLAVE; | |
1048 | } | |
1049 | ||
f56799ea JK |
1050 | adapter->num_tx_queues = 1; |
1051 | adapter->num_rx_queues = 1; | |
581d708e MC |
1052 | |
1053 | if (e1000_alloc_queues(adapter)) { | |
1054 | DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n"); | |
1055 | return -ENOMEM; | |
1056 | } | |
1057 | ||
1058 | #ifdef CONFIG_E1000_NAPI | |
f56799ea | 1059 | for (i = 0; i < adapter->num_rx_queues; i++) { |
581d708e MC |
1060 | adapter->polling_netdev[i].priv = adapter; |
1061 | adapter->polling_netdev[i].poll = &e1000_clean; | |
1062 | adapter->polling_netdev[i].weight = 64; | |
1063 | dev_hold(&adapter->polling_netdev[i]); | |
1064 | set_bit(__LINK_STATE_START, &adapter->polling_netdev[i].state); | |
1065 | } | |
7bfa4816 | 1066 | spin_lock_init(&adapter->tx_queue_lock); |
24025e4e MC |
1067 | #endif |
1068 | ||
1da177e4 LT |
1069 | atomic_set(&adapter->irq_sem, 1); |
1070 | spin_lock_init(&adapter->stats_lock); | |
1da177e4 LT |
1071 | |
1072 | return 0; | |
1073 | } | |
1074 | ||
581d708e MC |
1075 | /** |
1076 | * e1000_alloc_queues - Allocate memory for all rings | |
1077 | * @adapter: board private structure to initialize | |
1078 | * | |
1079 | * We allocate one ring per queue at run-time since we don't know the | |
1080 | * number of queues at compile-time. The polling_netdev array is | |
1081 | * intended for Multiqueue, but should work fine with a single queue. | |
1082 | **/ | |
1083 | ||
1084 | static int __devinit | |
1085 | e1000_alloc_queues(struct e1000_adapter *adapter) | |
1086 | { | |
1087 | int size; | |
1088 | ||
f56799ea | 1089 | size = sizeof(struct e1000_tx_ring) * adapter->num_tx_queues; |
581d708e MC |
1090 | adapter->tx_ring = kmalloc(size, GFP_KERNEL); |
1091 | if (!adapter->tx_ring) | |
1092 | return -ENOMEM; | |
1093 | memset(adapter->tx_ring, 0, size); | |
1094 | ||
f56799ea | 1095 | size = sizeof(struct e1000_rx_ring) * adapter->num_rx_queues; |
581d708e MC |
1096 | adapter->rx_ring = kmalloc(size, GFP_KERNEL); |
1097 | if (!adapter->rx_ring) { | |
1098 | kfree(adapter->tx_ring); | |
1099 | return -ENOMEM; | |
1100 | } | |
1101 | memset(adapter->rx_ring, 0, size); | |
1102 | ||
1103 | #ifdef CONFIG_E1000_NAPI | |
f56799ea | 1104 | size = sizeof(struct net_device) * adapter->num_rx_queues; |
581d708e MC |
1105 | adapter->polling_netdev = kmalloc(size, GFP_KERNEL); |
1106 | if (!adapter->polling_netdev) { | |
1107 | kfree(adapter->tx_ring); | |
1108 | kfree(adapter->rx_ring); | |
1109 | return -ENOMEM; | |
1110 | } | |
1111 | memset(adapter->polling_netdev, 0, size); | |
1112 | #endif | |
1113 | ||
1114 | return E1000_SUCCESS; | |
1115 | } | |
1116 | ||
1da177e4 LT |
1117 | /** |
1118 | * e1000_open - Called when a network interface is made active | |
1119 | * @netdev: network interface device structure | |
1120 | * | |
1121 | * Returns 0 on success, negative value on failure | |
1122 | * | |
1123 | * The open entry point is called when a network interface is made | |
1124 | * active by the system (IFF_UP). At this point all resources needed | |
1125 | * for transmit and receive operations are allocated, the interrupt | |
1126 | * handler is registered with the OS, the watchdog timer is started, | |
1127 | * and the stack is notified that the interface is ready. | |
1128 | **/ | |
1129 | ||
1130 | static int | |
1131 | e1000_open(struct net_device *netdev) | |
1132 | { | |
60490fe0 | 1133 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1134 | int err; |
1135 | ||
2db10a08 AK |
1136 | /* disallow open during test */ |
1137 | if (test_bit(__E1000_DRIVER_TESTING, &adapter->flags)) | |
1138 | return -EBUSY; | |
1139 | ||
1da177e4 LT |
1140 | /* allocate transmit descriptors */ |
1141 | ||
581d708e | 1142 | if ((err = e1000_setup_all_tx_resources(adapter))) |
1da177e4 LT |
1143 | goto err_setup_tx; |
1144 | ||
1145 | /* allocate receive descriptors */ | |
1146 | ||
581d708e | 1147 | if ((err = e1000_setup_all_rx_resources(adapter))) |
1da177e4 LT |
1148 | goto err_setup_rx; |
1149 | ||
2db10a08 AK |
1150 | err = e1000_request_irq(adapter); |
1151 | if (err) | |
1152 | goto err_up; | |
1153 | ||
79f05bf0 AK |
1154 | e1000_power_up_phy(adapter); |
1155 | ||
96838a40 | 1156 | if ((err = e1000_up(adapter))) |
1da177e4 | 1157 | goto err_up; |
2d7edb92 | 1158 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
96838a40 | 1159 | if ((adapter->hw.mng_cookie.status & |
2d7edb92 MC |
1160 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { |
1161 | e1000_update_mng_vlan(adapter); | |
1162 | } | |
1da177e4 | 1163 | |
b55ccb35 JK |
1164 | /* If AMT is enabled, let the firmware know that the network |
1165 | * interface is now open */ | |
1166 | if (adapter->hw.mac_type == e1000_82573 && | |
1167 | e1000_check_mng_mode(&adapter->hw)) | |
1168 | e1000_get_hw_control(adapter); | |
1169 | ||
1da177e4 LT |
1170 | return E1000_SUCCESS; |
1171 | ||
1172 | err_up: | |
581d708e | 1173 | e1000_free_all_rx_resources(adapter); |
1da177e4 | 1174 | err_setup_rx: |
581d708e | 1175 | e1000_free_all_tx_resources(adapter); |
1da177e4 LT |
1176 | err_setup_tx: |
1177 | e1000_reset(adapter); | |
1178 | ||
1179 | return err; | |
1180 | } | |
1181 | ||
1182 | /** | |
1183 | * e1000_close - Disables a network interface | |
1184 | * @netdev: network interface device structure | |
1185 | * | |
1186 | * Returns 0, this is not allowed to fail | |
1187 | * | |
1188 | * The close entry point is called when an interface is de-activated | |
1189 | * by the OS. The hardware is still under the drivers control, but | |
1190 | * needs to be disabled. A global MAC reset is issued to stop the | |
1191 | * hardware, and all transmit and receive resources are freed. | |
1192 | **/ | |
1193 | ||
1194 | static int | |
1195 | e1000_close(struct net_device *netdev) | |
1196 | { | |
60490fe0 | 1197 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 1198 | |
2db10a08 | 1199 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
1da177e4 | 1200 | e1000_down(adapter); |
79f05bf0 | 1201 | e1000_power_down_phy(adapter); |
2db10a08 | 1202 | e1000_free_irq(adapter); |
1da177e4 | 1203 | |
581d708e MC |
1204 | e1000_free_all_tx_resources(adapter); |
1205 | e1000_free_all_rx_resources(adapter); | |
1da177e4 | 1206 | |
96838a40 | 1207 | if ((adapter->hw.mng_cookie.status & |
2d7edb92 MC |
1208 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { |
1209 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); | |
1210 | } | |
b55ccb35 JK |
1211 | |
1212 | /* If AMT is enabled, let the firmware know that the network | |
1213 | * interface is now closed */ | |
1214 | if (adapter->hw.mac_type == e1000_82573 && | |
1215 | e1000_check_mng_mode(&adapter->hw)) | |
1216 | e1000_release_hw_control(adapter); | |
1217 | ||
1da177e4 LT |
1218 | return 0; |
1219 | } | |
1220 | ||
1221 | /** | |
1222 | * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary | |
1223 | * @adapter: address of board private structure | |
2d7edb92 MC |
1224 | * @start: address of beginning of memory |
1225 | * @len: length of memory | |
1da177e4 | 1226 | **/ |
e619d523 | 1227 | static boolean_t |
1da177e4 LT |
1228 | e1000_check_64k_bound(struct e1000_adapter *adapter, |
1229 | void *start, unsigned long len) | |
1230 | { | |
1231 | unsigned long begin = (unsigned long) start; | |
1232 | unsigned long end = begin + len; | |
1233 | ||
2648345f MC |
1234 | /* First rev 82545 and 82546 need to not allow any memory |
1235 | * write location to cross 64k boundary due to errata 23 */ | |
1da177e4 | 1236 | if (adapter->hw.mac_type == e1000_82545 || |
2648345f | 1237 | adapter->hw.mac_type == e1000_82546) { |
1da177e4 LT |
1238 | return ((begin ^ (end - 1)) >> 16) != 0 ? FALSE : TRUE; |
1239 | } | |
1240 | ||
1241 | return TRUE; | |
1242 | } | |
1243 | ||
1244 | /** | |
1245 | * e1000_setup_tx_resources - allocate Tx resources (Descriptors) | |
1246 | * @adapter: board private structure | |
581d708e | 1247 | * @txdr: tx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1248 | * |
1249 | * Return 0 on success, negative on failure | |
1250 | **/ | |
1251 | ||
3ad2cc67 | 1252 | static int |
581d708e MC |
1253 | e1000_setup_tx_resources(struct e1000_adapter *adapter, |
1254 | struct e1000_tx_ring *txdr) | |
1da177e4 | 1255 | { |
1da177e4 LT |
1256 | struct pci_dev *pdev = adapter->pdev; |
1257 | int size; | |
1258 | ||
1259 | size = sizeof(struct e1000_buffer) * txdr->count; | |
a7ec15da RT |
1260 | |
1261 | txdr->buffer_info = vmalloc_node(size, pcibus_to_node(pdev->bus)); | |
96838a40 | 1262 | if (!txdr->buffer_info) { |
2648345f MC |
1263 | DPRINTK(PROBE, ERR, |
1264 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1da177e4 LT |
1265 | return -ENOMEM; |
1266 | } | |
1267 | memset(txdr->buffer_info, 0, size); | |
1268 | ||
1269 | /* round up to nearest 4K */ | |
1270 | ||
1271 | txdr->size = txdr->count * sizeof(struct e1000_tx_desc); | |
1272 | E1000_ROUNDUP(txdr->size, 4096); | |
1273 | ||
1274 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); | |
96838a40 | 1275 | if (!txdr->desc) { |
1da177e4 | 1276 | setup_tx_desc_die: |
1da177e4 | 1277 | vfree(txdr->buffer_info); |
2648345f MC |
1278 | DPRINTK(PROBE, ERR, |
1279 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1da177e4 LT |
1280 | return -ENOMEM; |
1281 | } | |
1282 | ||
2648345f | 1283 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1284 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
1285 | void *olddesc = txdr->desc; | |
1286 | dma_addr_t olddma = txdr->dma; | |
2648345f MC |
1287 | DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes " |
1288 | "at %p\n", txdr->size, txdr->desc); | |
1289 | /* Try again, without freeing the previous */ | |
1da177e4 | 1290 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); |
2648345f | 1291 | /* Failed allocation, critical failure */ |
96838a40 | 1292 | if (!txdr->desc) { |
1da177e4 LT |
1293 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1294 | goto setup_tx_desc_die; | |
1295 | } | |
1296 | ||
1297 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { | |
1298 | /* give up */ | |
2648345f MC |
1299 | pci_free_consistent(pdev, txdr->size, txdr->desc, |
1300 | txdr->dma); | |
1da177e4 LT |
1301 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1302 | DPRINTK(PROBE, ERR, | |
2648345f MC |
1303 | "Unable to allocate aligned memory " |
1304 | "for the transmit descriptor ring\n"); | |
1da177e4 LT |
1305 | vfree(txdr->buffer_info); |
1306 | return -ENOMEM; | |
1307 | } else { | |
2648345f | 1308 | /* Free old allocation, new allocation was successful */ |
1da177e4 LT |
1309 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1310 | } | |
1311 | } | |
1312 | memset(txdr->desc, 0, txdr->size); | |
1313 | ||
1314 | txdr->next_to_use = 0; | |
1315 | txdr->next_to_clean = 0; | |
2ae76d98 | 1316 | spin_lock_init(&txdr->tx_lock); |
1da177e4 LT |
1317 | |
1318 | return 0; | |
1319 | } | |
1320 | ||
581d708e MC |
1321 | /** |
1322 | * e1000_setup_all_tx_resources - wrapper to allocate Tx resources | |
1323 | * (Descriptors) for all queues | |
1324 | * @adapter: board private structure | |
1325 | * | |
1326 | * If this function returns with an error, then it's possible one or | |
1327 | * more of the rings is populated (while the rest are not). It is the | |
1328 | * callers duty to clean those orphaned rings. | |
1329 | * | |
1330 | * Return 0 on success, negative on failure | |
1331 | **/ | |
1332 | ||
1333 | int | |
1334 | e1000_setup_all_tx_resources(struct e1000_adapter *adapter) | |
1335 | { | |
1336 | int i, err = 0; | |
1337 | ||
f56799ea | 1338 | for (i = 0; i < adapter->num_tx_queues; i++) { |
581d708e MC |
1339 | err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
1340 | if (err) { | |
1341 | DPRINTK(PROBE, ERR, | |
1342 | "Allocation for Tx Queue %u failed\n", i); | |
1343 | break; | |
1344 | } | |
1345 | } | |
1346 | ||
1347 | return err; | |
1348 | } | |
1349 | ||
1da177e4 LT |
1350 | /** |
1351 | * e1000_configure_tx - Configure 8254x Transmit Unit after Reset | |
1352 | * @adapter: board private structure | |
1353 | * | |
1354 | * Configure the Tx unit of the MAC after a reset. | |
1355 | **/ | |
1356 | ||
1357 | static void | |
1358 | e1000_configure_tx(struct e1000_adapter *adapter) | |
1359 | { | |
581d708e MC |
1360 | uint64_t tdba; |
1361 | struct e1000_hw *hw = &adapter->hw; | |
1362 | uint32_t tdlen, tctl, tipg, tarc; | |
0fadb059 | 1363 | uint32_t ipgr1, ipgr2; |
1da177e4 LT |
1364 | |
1365 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1366 | ||
f56799ea | 1367 | switch (adapter->num_tx_queues) { |
24025e4e MC |
1368 | case 1: |
1369 | default: | |
581d708e MC |
1370 | tdba = adapter->tx_ring[0].dma; |
1371 | tdlen = adapter->tx_ring[0].count * | |
1372 | sizeof(struct e1000_tx_desc); | |
1373 | E1000_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL)); | |
1374 | E1000_WRITE_REG(hw, TDBAH, (tdba >> 32)); | |
1375 | E1000_WRITE_REG(hw, TDLEN, tdlen); | |
1376 | E1000_WRITE_REG(hw, TDH, 0); | |
1377 | E1000_WRITE_REG(hw, TDT, 0); | |
1378 | adapter->tx_ring[0].tdh = E1000_TDH; | |
1379 | adapter->tx_ring[0].tdt = E1000_TDT; | |
24025e4e MC |
1380 | break; |
1381 | } | |
1da177e4 LT |
1382 | |
1383 | /* Set the default values for the Tx Inter Packet Gap timer */ | |
1384 | ||
0fadb059 JK |
1385 | if (hw->media_type == e1000_media_type_fiber || |
1386 | hw->media_type == e1000_media_type_internal_serdes) | |
1387 | tipg = DEFAULT_82543_TIPG_IPGT_FIBER; | |
1388 | else | |
1389 | tipg = DEFAULT_82543_TIPG_IPGT_COPPER; | |
1390 | ||
581d708e | 1391 | switch (hw->mac_type) { |
1da177e4 LT |
1392 | case e1000_82542_rev2_0: |
1393 | case e1000_82542_rev2_1: | |
1394 | tipg = DEFAULT_82542_TIPG_IPGT; | |
0fadb059 JK |
1395 | ipgr1 = DEFAULT_82542_TIPG_IPGR1; |
1396 | ipgr2 = DEFAULT_82542_TIPG_IPGR2; | |
1da177e4 | 1397 | break; |
87041639 JK |
1398 | case e1000_80003es2lan: |
1399 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; | |
1400 | ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; | |
1401 | break; | |
1da177e4 | 1402 | default: |
0fadb059 JK |
1403 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
1404 | ipgr2 = DEFAULT_82543_TIPG_IPGR2; | |
1405 | break; | |
1da177e4 | 1406 | } |
0fadb059 JK |
1407 | tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; |
1408 | tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; | |
581d708e | 1409 | E1000_WRITE_REG(hw, TIPG, tipg); |
1da177e4 LT |
1410 | |
1411 | /* Set the Tx Interrupt Delay register */ | |
1412 | ||
581d708e MC |
1413 | E1000_WRITE_REG(hw, TIDV, adapter->tx_int_delay); |
1414 | if (hw->mac_type >= e1000_82540) | |
1415 | E1000_WRITE_REG(hw, TADV, adapter->tx_abs_int_delay); | |
1da177e4 LT |
1416 | |
1417 | /* Program the Transmit Control Register */ | |
1418 | ||
581d708e | 1419 | tctl = E1000_READ_REG(hw, TCTL); |
1da177e4 LT |
1420 | |
1421 | tctl &= ~E1000_TCTL_CT; | |
7e6c9861 | 1422 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
1da177e4 LT |
1423 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
1424 | ||
7e6c9861 JK |
1425 | #ifdef DISABLE_MULR |
1426 | /* disable Multiple Reads for debugging */ | |
1427 | tctl &= ~E1000_TCTL_MULR; | |
1428 | #endif | |
1da177e4 | 1429 | |
2ae76d98 MC |
1430 | if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) { |
1431 | tarc = E1000_READ_REG(hw, TARC0); | |
1432 | tarc |= ((1 << 25) | (1 << 21)); | |
1433 | E1000_WRITE_REG(hw, TARC0, tarc); | |
1434 | tarc = E1000_READ_REG(hw, TARC1); | |
1435 | tarc |= (1 << 25); | |
1436 | if (tctl & E1000_TCTL_MULR) | |
1437 | tarc &= ~(1 << 28); | |
1438 | else | |
1439 | tarc |= (1 << 28); | |
1440 | E1000_WRITE_REG(hw, TARC1, tarc); | |
87041639 JK |
1441 | } else if (hw->mac_type == e1000_80003es2lan) { |
1442 | tarc = E1000_READ_REG(hw, TARC0); | |
1443 | tarc |= 1; | |
1444 | if (hw->media_type == e1000_media_type_internal_serdes) | |
1445 | tarc |= (1 << 20); | |
1446 | E1000_WRITE_REG(hw, TARC0, tarc); | |
1447 | tarc = E1000_READ_REG(hw, TARC1); | |
1448 | tarc |= 1; | |
1449 | E1000_WRITE_REG(hw, TARC1, tarc); | |
2ae76d98 MC |
1450 | } |
1451 | ||
581d708e | 1452 | e1000_config_collision_dist(hw); |
1da177e4 LT |
1453 | |
1454 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
1455 | adapter->txd_cmd = E1000_TXD_CMD_IDE | E1000_TXD_CMD_EOP | | |
1456 | E1000_TXD_CMD_IFCS; | |
1457 | ||
581d708e | 1458 | if (hw->mac_type < e1000_82543) |
1da177e4 LT |
1459 | adapter->txd_cmd |= E1000_TXD_CMD_RPS; |
1460 | else | |
1461 | adapter->txd_cmd |= E1000_TXD_CMD_RS; | |
1462 | ||
1463 | /* Cache if we're 82544 running in PCI-X because we'll | |
1464 | * need this to apply a workaround later in the send path. */ | |
581d708e MC |
1465 | if (hw->mac_type == e1000_82544 && |
1466 | hw->bus_type == e1000_bus_type_pcix) | |
1da177e4 | 1467 | adapter->pcix_82544 = 1; |
7e6c9861 JK |
1468 | |
1469 | E1000_WRITE_REG(hw, TCTL, tctl); | |
1470 | ||
1da177e4 LT |
1471 | } |
1472 | ||
1473 | /** | |
1474 | * e1000_setup_rx_resources - allocate Rx resources (Descriptors) | |
1475 | * @adapter: board private structure | |
581d708e | 1476 | * @rxdr: rx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1477 | * |
1478 | * Returns 0 on success, negative on failure | |
1479 | **/ | |
1480 | ||
3ad2cc67 | 1481 | static int |
581d708e MC |
1482 | e1000_setup_rx_resources(struct e1000_adapter *adapter, |
1483 | struct e1000_rx_ring *rxdr) | |
1da177e4 | 1484 | { |
1da177e4 | 1485 | struct pci_dev *pdev = adapter->pdev; |
2d7edb92 | 1486 | int size, desc_len; |
1da177e4 LT |
1487 | |
1488 | size = sizeof(struct e1000_buffer) * rxdr->count; | |
a7ec15da | 1489 | rxdr->buffer_info = vmalloc_node(size, pcibus_to_node(pdev->bus)); |
581d708e | 1490 | if (!rxdr->buffer_info) { |
2648345f MC |
1491 | DPRINTK(PROBE, ERR, |
1492 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1da177e4 LT |
1493 | return -ENOMEM; |
1494 | } | |
1495 | memset(rxdr->buffer_info, 0, size); | |
1496 | ||
2d7edb92 MC |
1497 | size = sizeof(struct e1000_ps_page) * rxdr->count; |
1498 | rxdr->ps_page = kmalloc(size, GFP_KERNEL); | |
96838a40 | 1499 | if (!rxdr->ps_page) { |
2d7edb92 MC |
1500 | vfree(rxdr->buffer_info); |
1501 | DPRINTK(PROBE, ERR, | |
1502 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1503 | return -ENOMEM; | |
1504 | } | |
1505 | memset(rxdr->ps_page, 0, size); | |
1506 | ||
1507 | size = sizeof(struct e1000_ps_page_dma) * rxdr->count; | |
1508 | rxdr->ps_page_dma = kmalloc(size, GFP_KERNEL); | |
96838a40 | 1509 | if (!rxdr->ps_page_dma) { |
2d7edb92 MC |
1510 | vfree(rxdr->buffer_info); |
1511 | kfree(rxdr->ps_page); | |
1512 | DPRINTK(PROBE, ERR, | |
1513 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1514 | return -ENOMEM; | |
1515 | } | |
1516 | memset(rxdr->ps_page_dma, 0, size); | |
1517 | ||
96838a40 | 1518 | if (adapter->hw.mac_type <= e1000_82547_rev_2) |
2d7edb92 MC |
1519 | desc_len = sizeof(struct e1000_rx_desc); |
1520 | else | |
1521 | desc_len = sizeof(union e1000_rx_desc_packet_split); | |
1522 | ||
1da177e4 LT |
1523 | /* Round up to nearest 4K */ |
1524 | ||
2d7edb92 | 1525 | rxdr->size = rxdr->count * desc_len; |
1da177e4 LT |
1526 | E1000_ROUNDUP(rxdr->size, 4096); |
1527 | ||
1528 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); | |
1529 | ||
581d708e MC |
1530 | if (!rxdr->desc) { |
1531 | DPRINTK(PROBE, ERR, | |
1532 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1da177e4 | 1533 | setup_rx_desc_die: |
1da177e4 | 1534 | vfree(rxdr->buffer_info); |
2d7edb92 MC |
1535 | kfree(rxdr->ps_page); |
1536 | kfree(rxdr->ps_page_dma); | |
1da177e4 LT |
1537 | return -ENOMEM; |
1538 | } | |
1539 | ||
2648345f | 1540 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1541 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
1542 | void *olddesc = rxdr->desc; | |
1543 | dma_addr_t olddma = rxdr->dma; | |
2648345f MC |
1544 | DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes " |
1545 | "at %p\n", rxdr->size, rxdr->desc); | |
1546 | /* Try again, without freeing the previous */ | |
1da177e4 | 1547 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); |
2648345f | 1548 | /* Failed allocation, critical failure */ |
581d708e | 1549 | if (!rxdr->desc) { |
1da177e4 | 1550 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
581d708e MC |
1551 | DPRINTK(PROBE, ERR, |
1552 | "Unable to allocate memory " | |
1553 | "for the receive descriptor ring\n"); | |
1da177e4 LT |
1554 | goto setup_rx_desc_die; |
1555 | } | |
1556 | ||
1557 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { | |
1558 | /* give up */ | |
2648345f MC |
1559 | pci_free_consistent(pdev, rxdr->size, rxdr->desc, |
1560 | rxdr->dma); | |
1da177e4 | 1561 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
2648345f MC |
1562 | DPRINTK(PROBE, ERR, |
1563 | "Unable to allocate aligned memory " | |
1564 | "for the receive descriptor ring\n"); | |
581d708e | 1565 | goto setup_rx_desc_die; |
1da177e4 | 1566 | } else { |
2648345f | 1567 | /* Free old allocation, new allocation was successful */ |
1da177e4 LT |
1568 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
1569 | } | |
1570 | } | |
1571 | memset(rxdr->desc, 0, rxdr->size); | |
1572 | ||
1573 | rxdr->next_to_clean = 0; | |
1574 | rxdr->next_to_use = 0; | |
1575 | ||
1576 | return 0; | |
1577 | } | |
1578 | ||
581d708e MC |
1579 | /** |
1580 | * e1000_setup_all_rx_resources - wrapper to allocate Rx resources | |
1581 | * (Descriptors) for all queues | |
1582 | * @adapter: board private structure | |
1583 | * | |
1584 | * If this function returns with an error, then it's possible one or | |
1585 | * more of the rings is populated (while the rest are not). It is the | |
1586 | * callers duty to clean those orphaned rings. | |
1587 | * | |
1588 | * Return 0 on success, negative on failure | |
1589 | **/ | |
1590 | ||
1591 | int | |
1592 | e1000_setup_all_rx_resources(struct e1000_adapter *adapter) | |
1593 | { | |
1594 | int i, err = 0; | |
1595 | ||
f56799ea | 1596 | for (i = 0; i < adapter->num_rx_queues; i++) { |
581d708e MC |
1597 | err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
1598 | if (err) { | |
1599 | DPRINTK(PROBE, ERR, | |
1600 | "Allocation for Rx Queue %u failed\n", i); | |
1601 | break; | |
1602 | } | |
1603 | } | |
1604 | ||
1605 | return err; | |
1606 | } | |
1607 | ||
1da177e4 | 1608 | /** |
2648345f | 1609 | * e1000_setup_rctl - configure the receive control registers |
1da177e4 LT |
1610 | * @adapter: Board private structure |
1611 | **/ | |
e4c811c9 MC |
1612 | #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ |
1613 | (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) | |
1da177e4 LT |
1614 | static void |
1615 | e1000_setup_rctl(struct e1000_adapter *adapter) | |
1616 | { | |
2d7edb92 MC |
1617 | uint32_t rctl, rfctl; |
1618 | uint32_t psrctl = 0; | |
35ec56bb | 1619 | #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT |
e4c811c9 MC |
1620 | uint32_t pages = 0; |
1621 | #endif | |
1da177e4 LT |
1622 | |
1623 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
1624 | ||
1625 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
1626 | ||
1627 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | | |
1628 | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | | |
1629 | (adapter->hw.mc_filter_type << E1000_RCTL_MO_SHIFT); | |
1630 | ||
0fadb059 JK |
1631 | if (adapter->hw.mac_type > e1000_82543) |
1632 | rctl |= E1000_RCTL_SECRC; | |
1633 | ||
1634 | if (adapter->hw.tbi_compatibility_on == 1) | |
1da177e4 LT |
1635 | rctl |= E1000_RCTL_SBP; |
1636 | else | |
1637 | rctl &= ~E1000_RCTL_SBP; | |
1638 | ||
2d7edb92 MC |
1639 | if (adapter->netdev->mtu <= ETH_DATA_LEN) |
1640 | rctl &= ~E1000_RCTL_LPE; | |
1641 | else | |
1642 | rctl |= E1000_RCTL_LPE; | |
1643 | ||
1da177e4 | 1644 | /* Setup buffer sizes */ |
9e2feace AK |
1645 | rctl &= ~E1000_RCTL_SZ_4096; |
1646 | rctl |= E1000_RCTL_BSEX; | |
1647 | switch (adapter->rx_buffer_len) { | |
1648 | case E1000_RXBUFFER_256: | |
1649 | rctl |= E1000_RCTL_SZ_256; | |
1650 | rctl &= ~E1000_RCTL_BSEX; | |
1651 | break; | |
1652 | case E1000_RXBUFFER_512: | |
1653 | rctl |= E1000_RCTL_SZ_512; | |
1654 | rctl &= ~E1000_RCTL_BSEX; | |
1655 | break; | |
1656 | case E1000_RXBUFFER_1024: | |
1657 | rctl |= E1000_RCTL_SZ_1024; | |
1658 | rctl &= ~E1000_RCTL_BSEX; | |
1659 | break; | |
a1415ee6 JK |
1660 | case E1000_RXBUFFER_2048: |
1661 | default: | |
1662 | rctl |= E1000_RCTL_SZ_2048; | |
1663 | rctl &= ~E1000_RCTL_BSEX; | |
1664 | break; | |
1665 | case E1000_RXBUFFER_4096: | |
1666 | rctl |= E1000_RCTL_SZ_4096; | |
1667 | break; | |
1668 | case E1000_RXBUFFER_8192: | |
1669 | rctl |= E1000_RCTL_SZ_8192; | |
1670 | break; | |
1671 | case E1000_RXBUFFER_16384: | |
1672 | rctl |= E1000_RCTL_SZ_16384; | |
1673 | break; | |
2d7edb92 MC |
1674 | } |
1675 | ||
35ec56bb | 1676 | #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT |
2d7edb92 MC |
1677 | /* 82571 and greater support packet-split where the protocol |
1678 | * header is placed in skb->data and the packet data is | |
1679 | * placed in pages hanging off of skb_shinfo(skb)->nr_frags. | |
1680 | * In the case of a non-split, skb->data is linearly filled, | |
1681 | * followed by the page buffers. Therefore, skb->data is | |
1682 | * sized to hold the largest protocol header. | |
1683 | */ | |
e4c811c9 MC |
1684 | pages = PAGE_USE_COUNT(adapter->netdev->mtu); |
1685 | if ((adapter->hw.mac_type > e1000_82547_rev_2) && (pages <= 3) && | |
1686 | PAGE_SIZE <= 16384) | |
1687 | adapter->rx_ps_pages = pages; | |
1688 | else | |
1689 | adapter->rx_ps_pages = 0; | |
2d7edb92 | 1690 | #endif |
e4c811c9 | 1691 | if (adapter->rx_ps_pages) { |
2d7edb92 MC |
1692 | /* Configure extra packet-split registers */ |
1693 | rfctl = E1000_READ_REG(&adapter->hw, RFCTL); | |
1694 | rfctl |= E1000_RFCTL_EXTEN; | |
1695 | /* disable IPv6 packet split support */ | |
1696 | rfctl |= E1000_RFCTL_IPV6_DIS; | |
1697 | E1000_WRITE_REG(&adapter->hw, RFCTL, rfctl); | |
1698 | ||
1699 | rctl |= E1000_RCTL_DTYP_PS | E1000_RCTL_SECRC; | |
96838a40 | 1700 | |
2d7edb92 MC |
1701 | psrctl |= adapter->rx_ps_bsize0 >> |
1702 | E1000_PSRCTL_BSIZE0_SHIFT; | |
e4c811c9 MC |
1703 | |
1704 | switch (adapter->rx_ps_pages) { | |
1705 | case 3: | |
1706 | psrctl |= PAGE_SIZE << | |
1707 | E1000_PSRCTL_BSIZE3_SHIFT; | |
1708 | case 2: | |
1709 | psrctl |= PAGE_SIZE << | |
1710 | E1000_PSRCTL_BSIZE2_SHIFT; | |
1711 | case 1: | |
1712 | psrctl |= PAGE_SIZE >> | |
1713 | E1000_PSRCTL_BSIZE1_SHIFT; | |
1714 | break; | |
1715 | } | |
2d7edb92 MC |
1716 | |
1717 | E1000_WRITE_REG(&adapter->hw, PSRCTL, psrctl); | |
1da177e4 LT |
1718 | } |
1719 | ||
1720 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
1721 | } | |
1722 | ||
1723 | /** | |
1724 | * e1000_configure_rx - Configure 8254x Receive Unit after Reset | |
1725 | * @adapter: board private structure | |
1726 | * | |
1727 | * Configure the Rx unit of the MAC after a reset. | |
1728 | **/ | |
1729 | ||
1730 | static void | |
1731 | e1000_configure_rx(struct e1000_adapter *adapter) | |
1732 | { | |
581d708e MC |
1733 | uint64_t rdba; |
1734 | struct e1000_hw *hw = &adapter->hw; | |
1735 | uint32_t rdlen, rctl, rxcsum, ctrl_ext; | |
2d7edb92 | 1736 | |
e4c811c9 | 1737 | if (adapter->rx_ps_pages) { |
0f15a8fa | 1738 | /* this is a 32 byte descriptor */ |
581d708e | 1739 | rdlen = adapter->rx_ring[0].count * |
2d7edb92 MC |
1740 | sizeof(union e1000_rx_desc_packet_split); |
1741 | adapter->clean_rx = e1000_clean_rx_irq_ps; | |
1742 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; | |
1743 | } else { | |
581d708e MC |
1744 | rdlen = adapter->rx_ring[0].count * |
1745 | sizeof(struct e1000_rx_desc); | |
2d7edb92 MC |
1746 | adapter->clean_rx = e1000_clean_rx_irq; |
1747 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers; | |
1748 | } | |
1da177e4 LT |
1749 | |
1750 | /* disable receives while setting up the descriptors */ | |
581d708e MC |
1751 | rctl = E1000_READ_REG(hw, RCTL); |
1752 | E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); | |
1da177e4 LT |
1753 | |
1754 | /* set the Receive Delay Timer Register */ | |
581d708e | 1755 | E1000_WRITE_REG(hw, RDTR, adapter->rx_int_delay); |
1da177e4 | 1756 | |
581d708e MC |
1757 | if (hw->mac_type >= e1000_82540) { |
1758 | E1000_WRITE_REG(hw, RADV, adapter->rx_abs_int_delay); | |
96838a40 | 1759 | if (adapter->itr > 1) |
581d708e | 1760 | E1000_WRITE_REG(hw, ITR, |
1da177e4 LT |
1761 | 1000000000 / (adapter->itr * 256)); |
1762 | } | |
1763 | ||
2ae76d98 | 1764 | if (hw->mac_type >= e1000_82571) { |
2ae76d98 | 1765 | ctrl_ext = E1000_READ_REG(hw, CTRL_EXT); |
1e613fd9 | 1766 | /* Reset delay timers after every interrupt */ |
6fc7a7ec | 1767 | ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR; |
1e613fd9 JK |
1768 | #ifdef CONFIG_E1000_NAPI |
1769 | /* Auto-Mask interrupts upon ICR read. */ | |
1770 | ctrl_ext |= E1000_CTRL_EXT_IAME; | |
1771 | #endif | |
2ae76d98 | 1772 | E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); |
1e613fd9 | 1773 | E1000_WRITE_REG(hw, IAM, ~0); |
2ae76d98 MC |
1774 | E1000_WRITE_FLUSH(hw); |
1775 | } | |
1776 | ||
581d708e MC |
1777 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
1778 | * the Base and Length of the Rx Descriptor Ring */ | |
f56799ea | 1779 | switch (adapter->num_rx_queues) { |
24025e4e MC |
1780 | case 1: |
1781 | default: | |
581d708e MC |
1782 | rdba = adapter->rx_ring[0].dma; |
1783 | E1000_WRITE_REG(hw, RDBAL, (rdba & 0x00000000ffffffffULL)); | |
1784 | E1000_WRITE_REG(hw, RDBAH, (rdba >> 32)); | |
1785 | E1000_WRITE_REG(hw, RDLEN, rdlen); | |
1786 | E1000_WRITE_REG(hw, RDH, 0); | |
1787 | E1000_WRITE_REG(hw, RDT, 0); | |
1788 | adapter->rx_ring[0].rdh = E1000_RDH; | |
1789 | adapter->rx_ring[0].rdt = E1000_RDT; | |
1790 | break; | |
24025e4e MC |
1791 | } |
1792 | ||
1da177e4 | 1793 | /* Enable 82543 Receive Checksum Offload for TCP and UDP */ |
581d708e MC |
1794 | if (hw->mac_type >= e1000_82543) { |
1795 | rxcsum = E1000_READ_REG(hw, RXCSUM); | |
96838a40 | 1796 | if (adapter->rx_csum == TRUE) { |
2d7edb92 MC |
1797 | rxcsum |= E1000_RXCSUM_TUOFL; |
1798 | ||
868d5309 | 1799 | /* Enable 82571 IPv4 payload checksum for UDP fragments |
2d7edb92 | 1800 | * Must be used in conjunction with packet-split. */ |
96838a40 JB |
1801 | if ((hw->mac_type >= e1000_82571) && |
1802 | (adapter->rx_ps_pages)) { | |
2d7edb92 MC |
1803 | rxcsum |= E1000_RXCSUM_IPPCSE; |
1804 | } | |
1805 | } else { | |
1806 | rxcsum &= ~E1000_RXCSUM_TUOFL; | |
1807 | /* don't need to clear IPPCSE as it defaults to 0 */ | |
1808 | } | |
581d708e | 1809 | E1000_WRITE_REG(hw, RXCSUM, rxcsum); |
1da177e4 LT |
1810 | } |
1811 | ||
581d708e MC |
1812 | if (hw->mac_type == e1000_82573) |
1813 | E1000_WRITE_REG(hw, ERT, 0x0100); | |
2d7edb92 | 1814 | |
1da177e4 | 1815 | /* Enable Receives */ |
581d708e | 1816 | E1000_WRITE_REG(hw, RCTL, rctl); |
1da177e4 LT |
1817 | } |
1818 | ||
1819 | /** | |
581d708e | 1820 | * e1000_free_tx_resources - Free Tx Resources per Queue |
1da177e4 | 1821 | * @adapter: board private structure |
581d708e | 1822 | * @tx_ring: Tx descriptor ring for a specific queue |
1da177e4 LT |
1823 | * |
1824 | * Free all transmit software resources | |
1825 | **/ | |
1826 | ||
3ad2cc67 | 1827 | static void |
581d708e MC |
1828 | e1000_free_tx_resources(struct e1000_adapter *adapter, |
1829 | struct e1000_tx_ring *tx_ring) | |
1da177e4 LT |
1830 | { |
1831 | struct pci_dev *pdev = adapter->pdev; | |
1832 | ||
581d708e | 1833 | e1000_clean_tx_ring(adapter, tx_ring); |
1da177e4 | 1834 | |
581d708e MC |
1835 | vfree(tx_ring->buffer_info); |
1836 | tx_ring->buffer_info = NULL; | |
1da177e4 | 1837 | |
581d708e | 1838 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); |
1da177e4 | 1839 | |
581d708e MC |
1840 | tx_ring->desc = NULL; |
1841 | } | |
1842 | ||
1843 | /** | |
1844 | * e1000_free_all_tx_resources - Free Tx Resources for All Queues | |
1845 | * @adapter: board private structure | |
1846 | * | |
1847 | * Free all transmit software resources | |
1848 | **/ | |
1849 | ||
1850 | void | |
1851 | e1000_free_all_tx_resources(struct e1000_adapter *adapter) | |
1852 | { | |
1853 | int i; | |
1854 | ||
f56799ea | 1855 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 1856 | e1000_free_tx_resources(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
1857 | } |
1858 | ||
e619d523 | 1859 | static void |
1da177e4 LT |
1860 | e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, |
1861 | struct e1000_buffer *buffer_info) | |
1862 | { | |
96838a40 | 1863 | if (buffer_info->dma) { |
2648345f MC |
1864 | pci_unmap_page(adapter->pdev, |
1865 | buffer_info->dma, | |
1866 | buffer_info->length, | |
1867 | PCI_DMA_TODEVICE); | |
1da177e4 | 1868 | } |
8241e35e | 1869 | if (buffer_info->skb) |
1da177e4 | 1870 | dev_kfree_skb_any(buffer_info->skb); |
8241e35e | 1871 | memset(buffer_info, 0, sizeof(struct e1000_buffer)); |
1da177e4 LT |
1872 | } |
1873 | ||
1874 | /** | |
1875 | * e1000_clean_tx_ring - Free Tx Buffers | |
1876 | * @adapter: board private structure | |
581d708e | 1877 | * @tx_ring: ring to be cleaned |
1da177e4 LT |
1878 | **/ |
1879 | ||
1880 | static void | |
581d708e MC |
1881 | e1000_clean_tx_ring(struct e1000_adapter *adapter, |
1882 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 1883 | { |
1da177e4 LT |
1884 | struct e1000_buffer *buffer_info; |
1885 | unsigned long size; | |
1886 | unsigned int i; | |
1887 | ||
1888 | /* Free all the Tx ring sk_buffs */ | |
1889 | ||
96838a40 | 1890 | for (i = 0; i < tx_ring->count; i++) { |
1da177e4 LT |
1891 | buffer_info = &tx_ring->buffer_info[i]; |
1892 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); | |
1893 | } | |
1894 | ||
1895 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
1896 | memset(tx_ring->buffer_info, 0, size); | |
1897 | ||
1898 | /* Zero out the descriptor ring */ | |
1899 | ||
1900 | memset(tx_ring->desc, 0, tx_ring->size); | |
1901 | ||
1902 | tx_ring->next_to_use = 0; | |
1903 | tx_ring->next_to_clean = 0; | |
fd803241 | 1904 | tx_ring->last_tx_tso = 0; |
1da177e4 | 1905 | |
581d708e MC |
1906 | writel(0, adapter->hw.hw_addr + tx_ring->tdh); |
1907 | writel(0, adapter->hw.hw_addr + tx_ring->tdt); | |
1908 | } | |
1909 | ||
1910 | /** | |
1911 | * e1000_clean_all_tx_rings - Free Tx Buffers for all queues | |
1912 | * @adapter: board private structure | |
1913 | **/ | |
1914 | ||
1915 | static void | |
1916 | e1000_clean_all_tx_rings(struct e1000_adapter *adapter) | |
1917 | { | |
1918 | int i; | |
1919 | ||
f56799ea | 1920 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 1921 | e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
1922 | } |
1923 | ||
1924 | /** | |
1925 | * e1000_free_rx_resources - Free Rx Resources | |
1926 | * @adapter: board private structure | |
581d708e | 1927 | * @rx_ring: ring to clean the resources from |
1da177e4 LT |
1928 | * |
1929 | * Free all receive software resources | |
1930 | **/ | |
1931 | ||
3ad2cc67 | 1932 | static void |
581d708e MC |
1933 | e1000_free_rx_resources(struct e1000_adapter *adapter, |
1934 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 1935 | { |
1da177e4 LT |
1936 | struct pci_dev *pdev = adapter->pdev; |
1937 | ||
581d708e | 1938 | e1000_clean_rx_ring(adapter, rx_ring); |
1da177e4 LT |
1939 | |
1940 | vfree(rx_ring->buffer_info); | |
1941 | rx_ring->buffer_info = NULL; | |
2d7edb92 MC |
1942 | kfree(rx_ring->ps_page); |
1943 | rx_ring->ps_page = NULL; | |
1944 | kfree(rx_ring->ps_page_dma); | |
1945 | rx_ring->ps_page_dma = NULL; | |
1da177e4 LT |
1946 | |
1947 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
1948 | ||
1949 | rx_ring->desc = NULL; | |
1950 | } | |
1951 | ||
1952 | /** | |
581d708e | 1953 | * e1000_free_all_rx_resources - Free Rx Resources for All Queues |
1da177e4 | 1954 | * @adapter: board private structure |
581d708e MC |
1955 | * |
1956 | * Free all receive software resources | |
1957 | **/ | |
1958 | ||
1959 | void | |
1960 | e1000_free_all_rx_resources(struct e1000_adapter *adapter) | |
1961 | { | |
1962 | int i; | |
1963 | ||
f56799ea | 1964 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e MC |
1965 | e1000_free_rx_resources(adapter, &adapter->rx_ring[i]); |
1966 | } | |
1967 | ||
1968 | /** | |
1969 | * e1000_clean_rx_ring - Free Rx Buffers per Queue | |
1970 | * @adapter: board private structure | |
1971 | * @rx_ring: ring to free buffers from | |
1da177e4 LT |
1972 | **/ |
1973 | ||
1974 | static void | |
581d708e MC |
1975 | e1000_clean_rx_ring(struct e1000_adapter *adapter, |
1976 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 1977 | { |
1da177e4 | 1978 | struct e1000_buffer *buffer_info; |
2d7edb92 MC |
1979 | struct e1000_ps_page *ps_page; |
1980 | struct e1000_ps_page_dma *ps_page_dma; | |
1da177e4 LT |
1981 | struct pci_dev *pdev = adapter->pdev; |
1982 | unsigned long size; | |
2d7edb92 | 1983 | unsigned int i, j; |
1da177e4 LT |
1984 | |
1985 | /* Free all the Rx ring sk_buffs */ | |
96838a40 | 1986 | for (i = 0; i < rx_ring->count; i++) { |
1da177e4 | 1987 | buffer_info = &rx_ring->buffer_info[i]; |
96838a40 | 1988 | if (buffer_info->skb) { |
1da177e4 LT |
1989 | pci_unmap_single(pdev, |
1990 | buffer_info->dma, | |
1991 | buffer_info->length, | |
1992 | PCI_DMA_FROMDEVICE); | |
1993 | ||
1994 | dev_kfree_skb(buffer_info->skb); | |
1995 | buffer_info->skb = NULL; | |
997f5cbd JK |
1996 | } |
1997 | ps_page = &rx_ring->ps_page[i]; | |
1998 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
1999 | for (j = 0; j < adapter->rx_ps_pages; j++) { | |
2000 | if (!ps_page->ps_page[j]) break; | |
2001 | pci_unmap_page(pdev, | |
2002 | ps_page_dma->ps_page_dma[j], | |
2003 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
2004 | ps_page_dma->ps_page_dma[j] = 0; | |
2005 | put_page(ps_page->ps_page[j]); | |
2006 | ps_page->ps_page[j] = NULL; | |
1da177e4 LT |
2007 | } |
2008 | } | |
2009 | ||
2010 | size = sizeof(struct e1000_buffer) * rx_ring->count; | |
2011 | memset(rx_ring->buffer_info, 0, size); | |
2d7edb92 MC |
2012 | size = sizeof(struct e1000_ps_page) * rx_ring->count; |
2013 | memset(rx_ring->ps_page, 0, size); | |
2014 | size = sizeof(struct e1000_ps_page_dma) * rx_ring->count; | |
2015 | memset(rx_ring->ps_page_dma, 0, size); | |
1da177e4 LT |
2016 | |
2017 | /* Zero out the descriptor ring */ | |
2018 | ||
2019 | memset(rx_ring->desc, 0, rx_ring->size); | |
2020 | ||
2021 | rx_ring->next_to_clean = 0; | |
2022 | rx_ring->next_to_use = 0; | |
2023 | ||
581d708e MC |
2024 | writel(0, adapter->hw.hw_addr + rx_ring->rdh); |
2025 | writel(0, adapter->hw.hw_addr + rx_ring->rdt); | |
2026 | } | |
2027 | ||
2028 | /** | |
2029 | * e1000_clean_all_rx_rings - Free Rx Buffers for all queues | |
2030 | * @adapter: board private structure | |
2031 | **/ | |
2032 | ||
2033 | static void | |
2034 | e1000_clean_all_rx_rings(struct e1000_adapter *adapter) | |
2035 | { | |
2036 | int i; | |
2037 | ||
f56799ea | 2038 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e | 2039 | e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]); |
1da177e4 LT |
2040 | } |
2041 | ||
2042 | /* The 82542 2.0 (revision 2) needs to have the receive unit in reset | |
2043 | * and memory write and invalidate disabled for certain operations | |
2044 | */ | |
2045 | static void | |
2046 | e1000_enter_82542_rst(struct e1000_adapter *adapter) | |
2047 | { | |
2048 | struct net_device *netdev = adapter->netdev; | |
2049 | uint32_t rctl; | |
2050 | ||
2051 | e1000_pci_clear_mwi(&adapter->hw); | |
2052 | ||
2053 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
2054 | rctl |= E1000_RCTL_RST; | |
2055 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2056 | E1000_WRITE_FLUSH(&adapter->hw); | |
2057 | mdelay(5); | |
2058 | ||
96838a40 | 2059 | if (netif_running(netdev)) |
581d708e | 2060 | e1000_clean_all_rx_rings(adapter); |
1da177e4 LT |
2061 | } |
2062 | ||
2063 | static void | |
2064 | e1000_leave_82542_rst(struct e1000_adapter *adapter) | |
2065 | { | |
2066 | struct net_device *netdev = adapter->netdev; | |
2067 | uint32_t rctl; | |
2068 | ||
2069 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
2070 | rctl &= ~E1000_RCTL_RST; | |
2071 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2072 | E1000_WRITE_FLUSH(&adapter->hw); | |
2073 | mdelay(5); | |
2074 | ||
96838a40 | 2075 | if (adapter->hw.pci_cmd_word & PCI_COMMAND_INVALIDATE) |
1da177e4 LT |
2076 | e1000_pci_set_mwi(&adapter->hw); |
2077 | ||
96838a40 | 2078 | if (netif_running(netdev)) { |
72d64a43 JK |
2079 | /* No need to loop, because 82542 supports only 1 queue */ |
2080 | struct e1000_rx_ring *ring = &adapter->rx_ring[0]; | |
7c4d3367 | 2081 | e1000_configure_rx(adapter); |
72d64a43 | 2082 | adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring)); |
1da177e4 LT |
2083 | } |
2084 | } | |
2085 | ||
2086 | /** | |
2087 | * e1000_set_mac - Change the Ethernet Address of the NIC | |
2088 | * @netdev: network interface device structure | |
2089 | * @p: pointer to an address structure | |
2090 | * | |
2091 | * Returns 0 on success, negative on failure | |
2092 | **/ | |
2093 | ||
2094 | static int | |
2095 | e1000_set_mac(struct net_device *netdev, void *p) | |
2096 | { | |
60490fe0 | 2097 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2098 | struct sockaddr *addr = p; |
2099 | ||
96838a40 | 2100 | if (!is_valid_ether_addr(addr->sa_data)) |
1da177e4 LT |
2101 | return -EADDRNOTAVAIL; |
2102 | ||
2103 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2104 | ||
96838a40 | 2105 | if (adapter->hw.mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2106 | e1000_enter_82542_rst(adapter); |
2107 | ||
2108 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
2109 | memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); | |
2110 | ||
2111 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0); | |
2112 | ||
868d5309 MC |
2113 | /* With 82571 controllers, LAA may be overwritten (with the default) |
2114 | * due to controller reset from the other port. */ | |
2115 | if (adapter->hw.mac_type == e1000_82571) { | |
2116 | /* activate the work around */ | |
2117 | adapter->hw.laa_is_present = 1; | |
2118 | ||
96838a40 JB |
2119 | /* Hold a copy of the LAA in RAR[14] This is done so that |
2120 | * between the time RAR[0] gets clobbered and the time it | |
2121 | * gets fixed (in e1000_watchdog), the actual LAA is in one | |
868d5309 | 2122 | * of the RARs and no incoming packets directed to this port |
96838a40 | 2123 | * are dropped. Eventaully the LAA will be in RAR[0] and |
868d5309 | 2124 | * RAR[14] */ |
96838a40 | 2125 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, |
868d5309 MC |
2126 | E1000_RAR_ENTRIES - 1); |
2127 | } | |
2128 | ||
96838a40 | 2129 | if (adapter->hw.mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2130 | e1000_leave_82542_rst(adapter); |
2131 | ||
2132 | return 0; | |
2133 | } | |
2134 | ||
2135 | /** | |
2136 | * e1000_set_multi - Multicast and Promiscuous mode set | |
2137 | * @netdev: network interface device structure | |
2138 | * | |
2139 | * The set_multi entry point is called whenever the multicast address | |
2140 | * list or the network interface flags are updated. This routine is | |
2141 | * responsible for configuring the hardware for proper multicast, | |
2142 | * promiscuous mode, and all-multi behavior. | |
2143 | **/ | |
2144 | ||
2145 | static void | |
2146 | e1000_set_multi(struct net_device *netdev) | |
2147 | { | |
60490fe0 | 2148 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2149 | struct e1000_hw *hw = &adapter->hw; |
2150 | struct dev_mc_list *mc_ptr; | |
2151 | uint32_t rctl; | |
2152 | uint32_t hash_value; | |
868d5309 | 2153 | int i, rar_entries = E1000_RAR_ENTRIES; |
1da177e4 | 2154 | |
868d5309 MC |
2155 | /* reserve RAR[14] for LAA over-write work-around */ |
2156 | if (adapter->hw.mac_type == e1000_82571) | |
2157 | rar_entries--; | |
1da177e4 | 2158 | |
2648345f MC |
2159 | /* Check for Promiscuous and All Multicast modes */ |
2160 | ||
1da177e4 LT |
2161 | rctl = E1000_READ_REG(hw, RCTL); |
2162 | ||
96838a40 | 2163 | if (netdev->flags & IFF_PROMISC) { |
1da177e4 | 2164 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
96838a40 | 2165 | } else if (netdev->flags & IFF_ALLMULTI) { |
1da177e4 LT |
2166 | rctl |= E1000_RCTL_MPE; |
2167 | rctl &= ~E1000_RCTL_UPE; | |
2168 | } else { | |
2169 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); | |
2170 | } | |
2171 | ||
2172 | E1000_WRITE_REG(hw, RCTL, rctl); | |
2173 | ||
2174 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2175 | ||
96838a40 | 2176 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2177 | e1000_enter_82542_rst(adapter); |
2178 | ||
2179 | /* load the first 14 multicast address into the exact filters 1-14 | |
2180 | * RAR 0 is used for the station MAC adddress | |
2181 | * if there are not 14 addresses, go ahead and clear the filters | |
868d5309 | 2182 | * -- with 82571 controllers only 0-13 entries are filled here |
1da177e4 LT |
2183 | */ |
2184 | mc_ptr = netdev->mc_list; | |
2185 | ||
96838a40 | 2186 | for (i = 1; i < rar_entries; i++) { |
868d5309 | 2187 | if (mc_ptr) { |
1da177e4 LT |
2188 | e1000_rar_set(hw, mc_ptr->dmi_addr, i); |
2189 | mc_ptr = mc_ptr->next; | |
2190 | } else { | |
2191 | E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); | |
2192 | E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); | |
2193 | } | |
2194 | } | |
2195 | ||
2196 | /* clear the old settings from the multicast hash table */ | |
2197 | ||
96838a40 | 2198 | for (i = 0; i < E1000_NUM_MTA_REGISTERS; i++) |
1da177e4 LT |
2199 | E1000_WRITE_REG_ARRAY(hw, MTA, i, 0); |
2200 | ||
2201 | /* load any remaining addresses into the hash table */ | |
2202 | ||
96838a40 | 2203 | for (; mc_ptr; mc_ptr = mc_ptr->next) { |
1da177e4 LT |
2204 | hash_value = e1000_hash_mc_addr(hw, mc_ptr->dmi_addr); |
2205 | e1000_mta_set(hw, hash_value); | |
2206 | } | |
2207 | ||
96838a40 | 2208 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 | 2209 | e1000_leave_82542_rst(adapter); |
1da177e4 LT |
2210 | } |
2211 | ||
2212 | /* Need to wait a few seconds after link up to get diagnostic information from | |
2213 | * the phy */ | |
2214 | ||
2215 | static void | |
2216 | e1000_update_phy_info(unsigned long data) | |
2217 | { | |
2218 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
2219 | e1000_phy_get_info(&adapter->hw, &adapter->phy_info); | |
2220 | } | |
2221 | ||
2222 | /** | |
2223 | * e1000_82547_tx_fifo_stall - Timer Call-back | |
2224 | * @data: pointer to adapter cast into an unsigned long | |
2225 | **/ | |
2226 | ||
2227 | static void | |
2228 | e1000_82547_tx_fifo_stall(unsigned long data) | |
2229 | { | |
2230 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
2231 | struct net_device *netdev = adapter->netdev; | |
2232 | uint32_t tctl; | |
2233 | ||
96838a40 JB |
2234 | if (atomic_read(&adapter->tx_fifo_stall)) { |
2235 | if ((E1000_READ_REG(&adapter->hw, TDT) == | |
1da177e4 LT |
2236 | E1000_READ_REG(&adapter->hw, TDH)) && |
2237 | (E1000_READ_REG(&adapter->hw, TDFT) == | |
2238 | E1000_READ_REG(&adapter->hw, TDFH)) && | |
2239 | (E1000_READ_REG(&adapter->hw, TDFTS) == | |
2240 | E1000_READ_REG(&adapter->hw, TDFHS))) { | |
2241 | tctl = E1000_READ_REG(&adapter->hw, TCTL); | |
2242 | E1000_WRITE_REG(&adapter->hw, TCTL, | |
2243 | tctl & ~E1000_TCTL_EN); | |
2244 | E1000_WRITE_REG(&adapter->hw, TDFT, | |
2245 | adapter->tx_head_addr); | |
2246 | E1000_WRITE_REG(&adapter->hw, TDFH, | |
2247 | adapter->tx_head_addr); | |
2248 | E1000_WRITE_REG(&adapter->hw, TDFTS, | |
2249 | adapter->tx_head_addr); | |
2250 | E1000_WRITE_REG(&adapter->hw, TDFHS, | |
2251 | adapter->tx_head_addr); | |
2252 | E1000_WRITE_REG(&adapter->hw, TCTL, tctl); | |
2253 | E1000_WRITE_FLUSH(&adapter->hw); | |
2254 | ||
2255 | adapter->tx_fifo_head = 0; | |
2256 | atomic_set(&adapter->tx_fifo_stall, 0); | |
2257 | netif_wake_queue(netdev); | |
2258 | } else { | |
2259 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); | |
2260 | } | |
2261 | } | |
2262 | } | |
2263 | ||
2264 | /** | |
2265 | * e1000_watchdog - Timer Call-back | |
2266 | * @data: pointer to adapter cast into an unsigned long | |
2267 | **/ | |
2268 | static void | |
2269 | e1000_watchdog(unsigned long data) | |
2270 | { | |
2271 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
1da177e4 | 2272 | struct net_device *netdev = adapter->netdev; |
545c67c0 | 2273 | struct e1000_tx_ring *txdr = adapter->tx_ring; |
7e6c9861 | 2274 | uint32_t link, tctl; |
1da177e4 LT |
2275 | |
2276 | e1000_check_for_link(&adapter->hw); | |
2d7edb92 MC |
2277 | if (adapter->hw.mac_type == e1000_82573) { |
2278 | e1000_enable_tx_pkt_filtering(&adapter->hw); | |
96838a40 | 2279 | if (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id) |
2d7edb92 | 2280 | e1000_update_mng_vlan(adapter); |
96838a40 | 2281 | } |
1da177e4 | 2282 | |
96838a40 | 2283 | if ((adapter->hw.media_type == e1000_media_type_internal_serdes) && |
1da177e4 LT |
2284 | !(E1000_READ_REG(&adapter->hw, TXCW) & E1000_TXCW_ANE)) |
2285 | link = !adapter->hw.serdes_link_down; | |
2286 | else | |
2287 | link = E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU; | |
2288 | ||
96838a40 JB |
2289 | if (link) { |
2290 | if (!netif_carrier_ok(netdev)) { | |
fe7fe28e | 2291 | boolean_t txb2b = 1; |
1da177e4 LT |
2292 | e1000_get_speed_and_duplex(&adapter->hw, |
2293 | &adapter->link_speed, | |
2294 | &adapter->link_duplex); | |
2295 | ||
2296 | DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s\n", | |
2297 | adapter->link_speed, | |
2298 | adapter->link_duplex == FULL_DUPLEX ? | |
2299 | "Full Duplex" : "Half Duplex"); | |
2300 | ||
7e6c9861 JK |
2301 | /* tweak tx_queue_len according to speed/duplex |
2302 | * and adjust the timeout factor */ | |
66a2b0a3 JK |
2303 | netdev->tx_queue_len = adapter->tx_queue_len; |
2304 | adapter->tx_timeout_factor = 1; | |
7e6c9861 JK |
2305 | switch (adapter->link_speed) { |
2306 | case SPEED_10: | |
fe7fe28e | 2307 | txb2b = 0; |
7e6c9861 JK |
2308 | netdev->tx_queue_len = 10; |
2309 | adapter->tx_timeout_factor = 8; | |
2310 | break; | |
2311 | case SPEED_100: | |
fe7fe28e | 2312 | txb2b = 0; |
7e6c9861 JK |
2313 | netdev->tx_queue_len = 100; |
2314 | /* maybe add some timeout factor ? */ | |
2315 | break; | |
2316 | } | |
2317 | ||
fe7fe28e | 2318 | if ((adapter->hw.mac_type == e1000_82571 || |
7e6c9861 | 2319 | adapter->hw.mac_type == e1000_82572) && |
fe7fe28e | 2320 | txb2b == 0) { |
7e6c9861 JK |
2321 | #define SPEED_MODE_BIT (1 << 21) |
2322 | uint32_t tarc0; | |
2323 | tarc0 = E1000_READ_REG(&adapter->hw, TARC0); | |
2324 | tarc0 &= ~SPEED_MODE_BIT; | |
2325 | E1000_WRITE_REG(&adapter->hw, TARC0, tarc0); | |
2326 | } | |
2327 | ||
2328 | #ifdef NETIF_F_TSO | |
2329 | /* disable TSO for pcie and 10/100 speeds, to avoid | |
2330 | * some hardware issues */ | |
2331 | if (!adapter->tso_force && | |
2332 | adapter->hw.bus_type == e1000_bus_type_pci_express){ | |
66a2b0a3 JK |
2333 | switch (adapter->link_speed) { |
2334 | case SPEED_10: | |
66a2b0a3 | 2335 | case SPEED_100: |
7e6c9861 JK |
2336 | DPRINTK(PROBE,INFO, |
2337 | "10/100 speed: disabling TSO\n"); | |
2338 | netdev->features &= ~NETIF_F_TSO; | |
2339 | break; | |
2340 | case SPEED_1000: | |
2341 | netdev->features |= NETIF_F_TSO; | |
2342 | break; | |
2343 | default: | |
2344 | /* oops */ | |
66a2b0a3 JK |
2345 | break; |
2346 | } | |
2347 | } | |
7e6c9861 JK |
2348 | #endif |
2349 | ||
2350 | /* enable transmits in the hardware, need to do this | |
2351 | * after setting TARC0 */ | |
2352 | tctl = E1000_READ_REG(&adapter->hw, TCTL); | |
2353 | tctl |= E1000_TCTL_EN; | |
2354 | E1000_WRITE_REG(&adapter->hw, TCTL, tctl); | |
66a2b0a3 | 2355 | |
1da177e4 LT |
2356 | netif_carrier_on(netdev); |
2357 | netif_wake_queue(netdev); | |
2358 | mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ); | |
2359 | adapter->smartspeed = 0; | |
2360 | } | |
2361 | } else { | |
96838a40 | 2362 | if (netif_carrier_ok(netdev)) { |
1da177e4 LT |
2363 | adapter->link_speed = 0; |
2364 | adapter->link_duplex = 0; | |
2365 | DPRINTK(LINK, INFO, "NIC Link is Down\n"); | |
2366 | netif_carrier_off(netdev); | |
2367 | netif_stop_queue(netdev); | |
2368 | mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ); | |
87041639 JK |
2369 | |
2370 | /* 80003ES2LAN workaround-- | |
2371 | * For packet buffer work-around on link down event; | |
2372 | * disable receives in the ISR and | |
2373 | * reset device here in the watchdog | |
2374 | */ | |
2375 | if (adapter->hw.mac_type == e1000_80003es2lan) { | |
2376 | /* reset device */ | |
2377 | schedule_work(&adapter->reset_task); | |
2378 | } | |
1da177e4 LT |
2379 | } |
2380 | ||
2381 | e1000_smartspeed(adapter); | |
2382 | } | |
2383 | ||
2384 | e1000_update_stats(adapter); | |
2385 | ||
2386 | adapter->hw.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; | |
2387 | adapter->tpt_old = adapter->stats.tpt; | |
2388 | adapter->hw.collision_delta = adapter->stats.colc - adapter->colc_old; | |
2389 | adapter->colc_old = adapter->stats.colc; | |
2390 | ||
2391 | adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; | |
2392 | adapter->gorcl_old = adapter->stats.gorcl; | |
2393 | adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; | |
2394 | adapter->gotcl_old = adapter->stats.gotcl; | |
2395 | ||
2396 | e1000_update_adaptive(&adapter->hw); | |
2397 | ||
f56799ea | 2398 | if (!netif_carrier_ok(netdev)) { |
581d708e | 2399 | if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { |
1da177e4 LT |
2400 | /* We've lost link, so the controller stops DMA, |
2401 | * but we've got queued Tx work that's never going | |
2402 | * to get done, so reset controller to flush Tx. | |
2403 | * (Do the reset outside of interrupt context). */ | |
87041639 JK |
2404 | adapter->tx_timeout_count++; |
2405 | schedule_work(&adapter->reset_task); | |
1da177e4 LT |
2406 | } |
2407 | } | |
2408 | ||
2409 | /* Dynamic mode for Interrupt Throttle Rate (ITR) */ | |
96838a40 | 2410 | if (adapter->hw.mac_type >= e1000_82540 && adapter->itr == 1) { |
1da177e4 LT |
2411 | /* Symmetric Tx/Rx gets a reduced ITR=2000; Total |
2412 | * asymmetrical Tx or Rx gets ITR=8000; everyone | |
2413 | * else is between 2000-8000. */ | |
2414 | uint32_t goc = (adapter->gotcl + adapter->gorcl) / 10000; | |
96838a40 | 2415 | uint32_t dif = (adapter->gotcl > adapter->gorcl ? |
1da177e4 LT |
2416 | adapter->gotcl - adapter->gorcl : |
2417 | adapter->gorcl - adapter->gotcl) / 10000; | |
2418 | uint32_t itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; | |
2419 | E1000_WRITE_REG(&adapter->hw, ITR, 1000000000 / (itr * 256)); | |
2420 | } | |
2421 | ||
2422 | /* Cause software interrupt to ensure rx ring is cleaned */ | |
2423 | E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_RXDMT0); | |
2424 | ||
2648345f | 2425 | /* Force detection of hung controller every watchdog period */ |
1da177e4 LT |
2426 | adapter->detect_tx_hung = TRUE; |
2427 | ||
96838a40 | 2428 | /* With 82571 controllers, LAA may be overwritten due to controller |
868d5309 MC |
2429 | * reset from the other port. Set the appropriate LAA in RAR[0] */ |
2430 | if (adapter->hw.mac_type == e1000_82571 && adapter->hw.laa_is_present) | |
2431 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0); | |
2432 | ||
1da177e4 LT |
2433 | /* Reset the timer */ |
2434 | mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ); | |
2435 | } | |
2436 | ||
2437 | #define E1000_TX_FLAGS_CSUM 0x00000001 | |
2438 | #define E1000_TX_FLAGS_VLAN 0x00000002 | |
2439 | #define E1000_TX_FLAGS_TSO 0x00000004 | |
2d7edb92 | 2440 | #define E1000_TX_FLAGS_IPV4 0x00000008 |
1da177e4 LT |
2441 | #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
2442 | #define E1000_TX_FLAGS_VLAN_SHIFT 16 | |
2443 | ||
e619d523 | 2444 | static int |
581d708e MC |
2445 | e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2446 | struct sk_buff *skb) | |
1da177e4 LT |
2447 | { |
2448 | #ifdef NETIF_F_TSO | |
2449 | struct e1000_context_desc *context_desc; | |
545c67c0 | 2450 | struct e1000_buffer *buffer_info; |
1da177e4 LT |
2451 | unsigned int i; |
2452 | uint32_t cmd_length = 0; | |
2d7edb92 | 2453 | uint16_t ipcse = 0, tucse, mss; |
1da177e4 LT |
2454 | uint8_t ipcss, ipcso, tucss, tucso, hdr_len; |
2455 | int err; | |
2456 | ||
96838a40 | 2457 | if (skb_shinfo(skb)->tso_size) { |
1da177e4 LT |
2458 | if (skb_header_cloned(skb)) { |
2459 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
2460 | if (err) | |
2461 | return err; | |
2462 | } | |
2463 | ||
2464 | hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2)); | |
2465 | mss = skb_shinfo(skb)->tso_size; | |
60828236 | 2466 | if (skb->protocol == htons(ETH_P_IP)) { |
2d7edb92 MC |
2467 | skb->nh.iph->tot_len = 0; |
2468 | skb->nh.iph->check = 0; | |
2469 | skb->h.th->check = | |
2470 | ~csum_tcpudp_magic(skb->nh.iph->saddr, | |
2471 | skb->nh.iph->daddr, | |
2472 | 0, | |
2473 | IPPROTO_TCP, | |
2474 | 0); | |
2475 | cmd_length = E1000_TXD_CMD_IP; | |
2476 | ipcse = skb->h.raw - skb->data - 1; | |
2477 | #ifdef NETIF_F_TSO_IPV6 | |
96838a40 | 2478 | } else if (skb->protocol == ntohs(ETH_P_IPV6)) { |
2d7edb92 MC |
2479 | skb->nh.ipv6h->payload_len = 0; |
2480 | skb->h.th->check = | |
2481 | ~csum_ipv6_magic(&skb->nh.ipv6h->saddr, | |
2482 | &skb->nh.ipv6h->daddr, | |
2483 | 0, | |
2484 | IPPROTO_TCP, | |
2485 | 0); | |
2486 | ipcse = 0; | |
2487 | #endif | |
2488 | } | |
1da177e4 LT |
2489 | ipcss = skb->nh.raw - skb->data; |
2490 | ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data; | |
1da177e4 LT |
2491 | tucss = skb->h.raw - skb->data; |
2492 | tucso = (void *)&(skb->h.th->check) - (void *)skb->data; | |
2493 | tucse = 0; | |
2494 | ||
2495 | cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | | |
2d7edb92 | 2496 | E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
1da177e4 | 2497 | |
581d708e MC |
2498 | i = tx_ring->next_to_use; |
2499 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
545c67c0 | 2500 | buffer_info = &tx_ring->buffer_info[i]; |
1da177e4 LT |
2501 | |
2502 | context_desc->lower_setup.ip_fields.ipcss = ipcss; | |
2503 | context_desc->lower_setup.ip_fields.ipcso = ipcso; | |
2504 | context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); | |
2505 | context_desc->upper_setup.tcp_fields.tucss = tucss; | |
2506 | context_desc->upper_setup.tcp_fields.tucso = tucso; | |
2507 | context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); | |
2508 | context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); | |
2509 | context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; | |
2510 | context_desc->cmd_and_length = cpu_to_le32(cmd_length); | |
2511 | ||
545c67c0 JK |
2512 | buffer_info->time_stamp = jiffies; |
2513 | ||
581d708e MC |
2514 | if (++i == tx_ring->count) i = 0; |
2515 | tx_ring->next_to_use = i; | |
1da177e4 | 2516 | |
8241e35e | 2517 | return TRUE; |
1da177e4 LT |
2518 | } |
2519 | #endif | |
2520 | ||
8241e35e | 2521 | return FALSE; |
1da177e4 LT |
2522 | } |
2523 | ||
e619d523 | 2524 | static boolean_t |
581d708e MC |
2525 | e1000_tx_csum(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2526 | struct sk_buff *skb) | |
1da177e4 LT |
2527 | { |
2528 | struct e1000_context_desc *context_desc; | |
545c67c0 | 2529 | struct e1000_buffer *buffer_info; |
1da177e4 LT |
2530 | unsigned int i; |
2531 | uint8_t css; | |
2532 | ||
96838a40 | 2533 | if (likely(skb->ip_summed == CHECKSUM_HW)) { |
1da177e4 LT |
2534 | css = skb->h.raw - skb->data; |
2535 | ||
581d708e | 2536 | i = tx_ring->next_to_use; |
545c67c0 | 2537 | buffer_info = &tx_ring->buffer_info[i]; |
581d708e | 2538 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
1da177e4 LT |
2539 | |
2540 | context_desc->upper_setup.tcp_fields.tucss = css; | |
2541 | context_desc->upper_setup.tcp_fields.tucso = css + skb->csum; | |
2542 | context_desc->upper_setup.tcp_fields.tucse = 0; | |
2543 | context_desc->tcp_seg_setup.data = 0; | |
2544 | context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT); | |
2545 | ||
545c67c0 JK |
2546 | buffer_info->time_stamp = jiffies; |
2547 | ||
581d708e MC |
2548 | if (unlikely(++i == tx_ring->count)) i = 0; |
2549 | tx_ring->next_to_use = i; | |
1da177e4 LT |
2550 | |
2551 | return TRUE; | |
2552 | } | |
2553 | ||
2554 | return FALSE; | |
2555 | } | |
2556 | ||
2557 | #define E1000_MAX_TXD_PWR 12 | |
2558 | #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) | |
2559 | ||
e619d523 | 2560 | static int |
581d708e MC |
2561 | e1000_tx_map(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2562 | struct sk_buff *skb, unsigned int first, unsigned int max_per_txd, | |
2563 | unsigned int nr_frags, unsigned int mss) | |
1da177e4 | 2564 | { |
1da177e4 LT |
2565 | struct e1000_buffer *buffer_info; |
2566 | unsigned int len = skb->len; | |
2567 | unsigned int offset = 0, size, count = 0, i; | |
2568 | unsigned int f; | |
2569 | len -= skb->data_len; | |
2570 | ||
2571 | i = tx_ring->next_to_use; | |
2572 | ||
96838a40 | 2573 | while (len) { |
1da177e4 LT |
2574 | buffer_info = &tx_ring->buffer_info[i]; |
2575 | size = min(len, max_per_txd); | |
2576 | #ifdef NETIF_F_TSO | |
fd803241 JK |
2577 | /* Workaround for Controller erratum -- |
2578 | * descriptor for non-tso packet in a linear SKB that follows a | |
2579 | * tso gets written back prematurely before the data is fully | |
0f15a8fa | 2580 | * DMA'd to the controller */ |
fd803241 | 2581 | if (!skb->data_len && tx_ring->last_tx_tso && |
0f15a8fa | 2582 | !skb_shinfo(skb)->tso_size) { |
fd803241 JK |
2583 | tx_ring->last_tx_tso = 0; |
2584 | size -= 4; | |
2585 | } | |
2586 | ||
1da177e4 LT |
2587 | /* Workaround for premature desc write-backs |
2588 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 2589 | if (unlikely(mss && !nr_frags && size == len && size > 8)) |
1da177e4 LT |
2590 | size -= 4; |
2591 | #endif | |
97338bde MC |
2592 | /* work-around for errata 10 and it applies |
2593 | * to all controllers in PCI-X mode | |
2594 | * The fix is to make sure that the first descriptor of a | |
2595 | * packet is smaller than 2048 - 16 - 16 (or 2016) bytes | |
2596 | */ | |
96838a40 | 2597 | if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && |
97338bde MC |
2598 | (size > 2015) && count == 0)) |
2599 | size = 2015; | |
96838a40 | 2600 | |
1da177e4 LT |
2601 | /* Workaround for potential 82544 hang in PCI-X. Avoid |
2602 | * terminating buffers within evenly-aligned dwords. */ | |
96838a40 | 2603 | if (unlikely(adapter->pcix_82544 && |
1da177e4 LT |
2604 | !((unsigned long)(skb->data + offset + size - 1) & 4) && |
2605 | size > 4)) | |
2606 | size -= 4; | |
2607 | ||
2608 | buffer_info->length = size; | |
2609 | buffer_info->dma = | |
2610 | pci_map_single(adapter->pdev, | |
2611 | skb->data + offset, | |
2612 | size, | |
2613 | PCI_DMA_TODEVICE); | |
2614 | buffer_info->time_stamp = jiffies; | |
2615 | ||
2616 | len -= size; | |
2617 | offset += size; | |
2618 | count++; | |
96838a40 | 2619 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
2620 | } |
2621 | ||
96838a40 | 2622 | for (f = 0; f < nr_frags; f++) { |
1da177e4 LT |
2623 | struct skb_frag_struct *frag; |
2624 | ||
2625 | frag = &skb_shinfo(skb)->frags[f]; | |
2626 | len = frag->size; | |
2627 | offset = frag->page_offset; | |
2628 | ||
96838a40 | 2629 | while (len) { |
1da177e4 LT |
2630 | buffer_info = &tx_ring->buffer_info[i]; |
2631 | size = min(len, max_per_txd); | |
2632 | #ifdef NETIF_F_TSO | |
2633 | /* Workaround for premature desc write-backs | |
2634 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 2635 | if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) |
1da177e4 LT |
2636 | size -= 4; |
2637 | #endif | |
2638 | /* Workaround for potential 82544 hang in PCI-X. | |
2639 | * Avoid terminating buffers within evenly-aligned | |
2640 | * dwords. */ | |
96838a40 | 2641 | if (unlikely(adapter->pcix_82544 && |
1da177e4 LT |
2642 | !((unsigned long)(frag->page+offset+size-1) & 4) && |
2643 | size > 4)) | |
2644 | size -= 4; | |
2645 | ||
2646 | buffer_info->length = size; | |
2647 | buffer_info->dma = | |
2648 | pci_map_page(adapter->pdev, | |
2649 | frag->page, | |
2650 | offset, | |
2651 | size, | |
2652 | PCI_DMA_TODEVICE); | |
2653 | buffer_info->time_stamp = jiffies; | |
2654 | ||
2655 | len -= size; | |
2656 | offset += size; | |
2657 | count++; | |
96838a40 | 2658 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
2659 | } |
2660 | } | |
2661 | ||
2662 | i = (i == 0) ? tx_ring->count - 1 : i - 1; | |
2663 | tx_ring->buffer_info[i].skb = skb; | |
2664 | tx_ring->buffer_info[first].next_to_watch = i; | |
2665 | ||
2666 | return count; | |
2667 | } | |
2668 | ||
e619d523 | 2669 | static void |
581d708e MC |
2670 | e1000_tx_queue(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2671 | int tx_flags, int count) | |
1da177e4 | 2672 | { |
1da177e4 LT |
2673 | struct e1000_tx_desc *tx_desc = NULL; |
2674 | struct e1000_buffer *buffer_info; | |
2675 | uint32_t txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; | |
2676 | unsigned int i; | |
2677 | ||
96838a40 | 2678 | if (likely(tx_flags & E1000_TX_FLAGS_TSO)) { |
1da177e4 LT |
2679 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
2680 | E1000_TXD_CMD_TSE; | |
2d7edb92 MC |
2681 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
2682 | ||
96838a40 | 2683 | if (likely(tx_flags & E1000_TX_FLAGS_IPV4)) |
2d7edb92 | 2684 | txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
1da177e4 LT |
2685 | } |
2686 | ||
96838a40 | 2687 | if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) { |
1da177e4 LT |
2688 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
2689 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
2690 | } | |
2691 | ||
96838a40 | 2692 | if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { |
1da177e4 LT |
2693 | txd_lower |= E1000_TXD_CMD_VLE; |
2694 | txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); | |
2695 | } | |
2696 | ||
2697 | i = tx_ring->next_to_use; | |
2698 | ||
96838a40 | 2699 | while (count--) { |
1da177e4 LT |
2700 | buffer_info = &tx_ring->buffer_info[i]; |
2701 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
2702 | tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
2703 | tx_desc->lower.data = | |
2704 | cpu_to_le32(txd_lower | buffer_info->length); | |
2705 | tx_desc->upper.data = cpu_to_le32(txd_upper); | |
96838a40 | 2706 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
2707 | } |
2708 | ||
2709 | tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); | |
2710 | ||
2711 | /* Force memory writes to complete before letting h/w | |
2712 | * know there are new descriptors to fetch. (Only | |
2713 | * applicable for weak-ordered memory model archs, | |
2714 | * such as IA-64). */ | |
2715 | wmb(); | |
2716 | ||
2717 | tx_ring->next_to_use = i; | |
581d708e | 2718 | writel(i, adapter->hw.hw_addr + tx_ring->tdt); |
1da177e4 LT |
2719 | } |
2720 | ||
2721 | /** | |
2722 | * 82547 workaround to avoid controller hang in half-duplex environment. | |
2723 | * The workaround is to avoid queuing a large packet that would span | |
2724 | * the internal Tx FIFO ring boundary by notifying the stack to resend | |
2725 | * the packet at a later time. This gives the Tx FIFO an opportunity to | |
2726 | * flush all packets. When that occurs, we reset the Tx FIFO pointers | |
2727 | * to the beginning of the Tx FIFO. | |
2728 | **/ | |
2729 | ||
2730 | #define E1000_FIFO_HDR 0x10 | |
2731 | #define E1000_82547_PAD_LEN 0x3E0 | |
2732 | ||
e619d523 | 2733 | static int |
1da177e4 LT |
2734 | e1000_82547_fifo_workaround(struct e1000_adapter *adapter, struct sk_buff *skb) |
2735 | { | |
2736 | uint32_t fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; | |
2737 | uint32_t skb_fifo_len = skb->len + E1000_FIFO_HDR; | |
2738 | ||
2739 | E1000_ROUNDUP(skb_fifo_len, E1000_FIFO_HDR); | |
2740 | ||
96838a40 | 2741 | if (adapter->link_duplex != HALF_DUPLEX) |
1da177e4 LT |
2742 | goto no_fifo_stall_required; |
2743 | ||
96838a40 | 2744 | if (atomic_read(&adapter->tx_fifo_stall)) |
1da177e4 LT |
2745 | return 1; |
2746 | ||
96838a40 | 2747 | if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { |
1da177e4 LT |
2748 | atomic_set(&adapter->tx_fifo_stall, 1); |
2749 | return 1; | |
2750 | } | |
2751 | ||
2752 | no_fifo_stall_required: | |
2753 | adapter->tx_fifo_head += skb_fifo_len; | |
96838a40 | 2754 | if (adapter->tx_fifo_head >= adapter->tx_fifo_size) |
1da177e4 LT |
2755 | adapter->tx_fifo_head -= adapter->tx_fifo_size; |
2756 | return 0; | |
2757 | } | |
2758 | ||
2d7edb92 | 2759 | #define MINIMUM_DHCP_PACKET_SIZE 282 |
e619d523 | 2760 | static int |
2d7edb92 MC |
2761 | e1000_transfer_dhcp_info(struct e1000_adapter *adapter, struct sk_buff *skb) |
2762 | { | |
2763 | struct e1000_hw *hw = &adapter->hw; | |
2764 | uint16_t length, offset; | |
96838a40 JB |
2765 | if (vlan_tx_tag_present(skb)) { |
2766 | if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) && | |
2d7edb92 MC |
2767 | ( adapter->hw.mng_cookie.status & |
2768 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) ) | |
2769 | return 0; | |
2770 | } | |
20a44028 | 2771 | if (skb->len > MINIMUM_DHCP_PACKET_SIZE) { |
2d7edb92 | 2772 | struct ethhdr *eth = (struct ethhdr *) skb->data; |
96838a40 JB |
2773 | if ((htons(ETH_P_IP) == eth->h_proto)) { |
2774 | const struct iphdr *ip = | |
2d7edb92 | 2775 | (struct iphdr *)((uint8_t *)skb->data+14); |
96838a40 JB |
2776 | if (IPPROTO_UDP == ip->protocol) { |
2777 | struct udphdr *udp = | |
2778 | (struct udphdr *)((uint8_t *)ip + | |
2d7edb92 | 2779 | (ip->ihl << 2)); |
96838a40 | 2780 | if (ntohs(udp->dest) == 67) { |
2d7edb92 MC |
2781 | offset = (uint8_t *)udp + 8 - skb->data; |
2782 | length = skb->len - offset; | |
2783 | ||
2784 | return e1000_mng_write_dhcp_info(hw, | |
96838a40 | 2785 | (uint8_t *)udp + 8, |
2d7edb92 MC |
2786 | length); |
2787 | } | |
2788 | } | |
2789 | } | |
2790 | } | |
2791 | return 0; | |
2792 | } | |
2793 | ||
1da177e4 LT |
2794 | #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
2795 | static int | |
2796 | e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
2797 | { | |
60490fe0 | 2798 | struct e1000_adapter *adapter = netdev_priv(netdev); |
581d708e | 2799 | struct e1000_tx_ring *tx_ring; |
1da177e4 LT |
2800 | unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; |
2801 | unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; | |
2802 | unsigned int tx_flags = 0; | |
2803 | unsigned int len = skb->len; | |
2804 | unsigned long flags; | |
2805 | unsigned int nr_frags = 0; | |
2806 | unsigned int mss = 0; | |
2807 | int count = 0; | |
76c224bc | 2808 | int tso; |
1da177e4 LT |
2809 | unsigned int f; |
2810 | len -= skb->data_len; | |
2811 | ||
581d708e | 2812 | tx_ring = adapter->tx_ring; |
24025e4e | 2813 | |
581d708e | 2814 | if (unlikely(skb->len <= 0)) { |
1da177e4 LT |
2815 | dev_kfree_skb_any(skb); |
2816 | return NETDEV_TX_OK; | |
2817 | } | |
2818 | ||
2819 | #ifdef NETIF_F_TSO | |
2820 | mss = skb_shinfo(skb)->tso_size; | |
76c224bc | 2821 | /* The controller does a simple calculation to |
1da177e4 LT |
2822 | * make sure there is enough room in the FIFO before |
2823 | * initiating the DMA for each buffer. The calc is: | |
2824 | * 4 = ceil(buffer len/mss). To make sure we don't | |
2825 | * overrun the FIFO, adjust the max buffer len if mss | |
2826 | * drops. */ | |
96838a40 | 2827 | if (mss) { |
9a3056da | 2828 | uint8_t hdr_len; |
1da177e4 LT |
2829 | max_per_txd = min(mss << 2, max_per_txd); |
2830 | max_txd_pwr = fls(max_per_txd) - 1; | |
9a3056da | 2831 | |
9f687888 | 2832 | /* TSO Workaround for 82571/2/3 Controllers -- if skb->data |
9a3056da JK |
2833 | * points to just header, pull a few bytes of payload from |
2834 | * frags into skb->data */ | |
2835 | hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2)); | |
9f687888 JK |
2836 | if (skb->data_len && (hdr_len == (skb->len - skb->data_len))) { |
2837 | switch (adapter->hw.mac_type) { | |
2838 | unsigned int pull_size; | |
2839 | case e1000_82571: | |
2840 | case e1000_82572: | |
2841 | case e1000_82573: | |
2842 | pull_size = min((unsigned int)4, skb->data_len); | |
2843 | if (!__pskb_pull_tail(skb, pull_size)) { | |
76c224bc | 2844 | printk(KERN_ERR |
9f687888 JK |
2845 | "__pskb_pull_tail failed.\n"); |
2846 | dev_kfree_skb_any(skb); | |
749dfc70 | 2847 | return NETDEV_TX_OK; |
9f687888 JK |
2848 | } |
2849 | len = skb->len - skb->data_len; | |
2850 | break; | |
2851 | default: | |
2852 | /* do nothing */ | |
2853 | break; | |
d74bbd3b | 2854 | } |
9a3056da | 2855 | } |
1da177e4 LT |
2856 | } |
2857 | ||
9a3056da | 2858 | /* reserve a descriptor for the offload context */ |
96838a40 | 2859 | if ((mss) || (skb->ip_summed == CHECKSUM_HW)) |
1da177e4 | 2860 | count++; |
2648345f | 2861 | count++; |
1da177e4 | 2862 | #else |
96838a40 | 2863 | if (skb->ip_summed == CHECKSUM_HW) |
1da177e4 LT |
2864 | count++; |
2865 | #endif | |
fd803241 JK |
2866 | |
2867 | #ifdef NETIF_F_TSO | |
2868 | /* Controller Erratum workaround */ | |
2869 | if (!skb->data_len && tx_ring->last_tx_tso && | |
0f15a8fa | 2870 | !skb_shinfo(skb)->tso_size) |
fd803241 JK |
2871 | count++; |
2872 | #endif | |
2873 | ||
1da177e4 LT |
2874 | count += TXD_USE_COUNT(len, max_txd_pwr); |
2875 | ||
96838a40 | 2876 | if (adapter->pcix_82544) |
1da177e4 LT |
2877 | count++; |
2878 | ||
96838a40 | 2879 | /* work-around for errata 10 and it applies to all controllers |
97338bde MC |
2880 | * in PCI-X mode, so add one more descriptor to the count |
2881 | */ | |
96838a40 | 2882 | if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && |
97338bde MC |
2883 | (len > 2015))) |
2884 | count++; | |
2885 | ||
1da177e4 | 2886 | nr_frags = skb_shinfo(skb)->nr_frags; |
96838a40 | 2887 | for (f = 0; f < nr_frags; f++) |
1da177e4 LT |
2888 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, |
2889 | max_txd_pwr); | |
96838a40 | 2890 | if (adapter->pcix_82544) |
1da177e4 LT |
2891 | count += nr_frags; |
2892 | ||
0f15a8fa JK |
2893 | |
2894 | if (adapter->hw.tx_pkt_filtering && | |
2895 | (adapter->hw.mac_type == e1000_82573)) | |
2d7edb92 MC |
2896 | e1000_transfer_dhcp_info(adapter, skb); |
2897 | ||
581d708e MC |
2898 | local_irq_save(flags); |
2899 | if (!spin_trylock(&tx_ring->tx_lock)) { | |
2900 | /* Collision - tell upper layer to requeue */ | |
2901 | local_irq_restore(flags); | |
2902 | return NETDEV_TX_LOCKED; | |
2903 | } | |
1da177e4 LT |
2904 | |
2905 | /* need: count + 2 desc gap to keep tail from touching | |
2906 | * head, otherwise try next time */ | |
581d708e | 2907 | if (unlikely(E1000_DESC_UNUSED(tx_ring) < count + 2)) { |
1da177e4 | 2908 | netif_stop_queue(netdev); |
581d708e | 2909 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
2910 | return NETDEV_TX_BUSY; |
2911 | } | |
2912 | ||
96838a40 JB |
2913 | if (unlikely(adapter->hw.mac_type == e1000_82547)) { |
2914 | if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) { | |
1da177e4 LT |
2915 | netif_stop_queue(netdev); |
2916 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies); | |
581d708e | 2917 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
2918 | return NETDEV_TX_BUSY; |
2919 | } | |
2920 | } | |
2921 | ||
96838a40 | 2922 | if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) { |
1da177e4 LT |
2923 | tx_flags |= E1000_TX_FLAGS_VLAN; |
2924 | tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); | |
2925 | } | |
2926 | ||
581d708e | 2927 | first = tx_ring->next_to_use; |
96838a40 | 2928 | |
581d708e | 2929 | tso = e1000_tso(adapter, tx_ring, skb); |
1da177e4 LT |
2930 | if (tso < 0) { |
2931 | dev_kfree_skb_any(skb); | |
581d708e | 2932 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
2933 | return NETDEV_TX_OK; |
2934 | } | |
2935 | ||
fd803241 JK |
2936 | if (likely(tso)) { |
2937 | tx_ring->last_tx_tso = 1; | |
1da177e4 | 2938 | tx_flags |= E1000_TX_FLAGS_TSO; |
fd803241 | 2939 | } else if (likely(e1000_tx_csum(adapter, tx_ring, skb))) |
1da177e4 LT |
2940 | tx_flags |= E1000_TX_FLAGS_CSUM; |
2941 | ||
2d7edb92 | 2942 | /* Old method was to assume IPv4 packet by default if TSO was enabled. |
868d5309 | 2943 | * 82571 hardware supports TSO capabilities for IPv6 as well... |
2d7edb92 | 2944 | * no longer assume, we must. */ |
60828236 | 2945 | if (likely(skb->protocol == htons(ETH_P_IP))) |
2d7edb92 MC |
2946 | tx_flags |= E1000_TX_FLAGS_IPV4; |
2947 | ||
581d708e MC |
2948 | e1000_tx_queue(adapter, tx_ring, tx_flags, |
2949 | e1000_tx_map(adapter, tx_ring, skb, first, | |
2950 | max_per_txd, nr_frags, mss)); | |
1da177e4 LT |
2951 | |
2952 | netdev->trans_start = jiffies; | |
2953 | ||
2954 | /* Make sure there is space in the ring for the next send. */ | |
581d708e | 2955 | if (unlikely(E1000_DESC_UNUSED(tx_ring) < MAX_SKB_FRAGS + 2)) |
1da177e4 LT |
2956 | netif_stop_queue(netdev); |
2957 | ||
581d708e | 2958 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
2959 | return NETDEV_TX_OK; |
2960 | } | |
2961 | ||
2962 | /** | |
2963 | * e1000_tx_timeout - Respond to a Tx Hang | |
2964 | * @netdev: network interface device structure | |
2965 | **/ | |
2966 | ||
2967 | static void | |
2968 | e1000_tx_timeout(struct net_device *netdev) | |
2969 | { | |
60490fe0 | 2970 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2971 | |
2972 | /* Do the reset outside of interrupt context */ | |
87041639 JK |
2973 | adapter->tx_timeout_count++; |
2974 | schedule_work(&adapter->reset_task); | |
1da177e4 LT |
2975 | } |
2976 | ||
2977 | static void | |
87041639 | 2978 | e1000_reset_task(struct net_device *netdev) |
1da177e4 | 2979 | { |
60490fe0 | 2980 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 2981 | |
2db10a08 | 2982 | e1000_reinit_locked(adapter); |
1da177e4 LT |
2983 | } |
2984 | ||
2985 | /** | |
2986 | * e1000_get_stats - Get System Network Statistics | |
2987 | * @netdev: network interface device structure | |
2988 | * | |
2989 | * Returns the address of the device statistics structure. | |
2990 | * The statistics are actually updated from the timer callback. | |
2991 | **/ | |
2992 | ||
2993 | static struct net_device_stats * | |
2994 | e1000_get_stats(struct net_device *netdev) | |
2995 | { | |
60490fe0 | 2996 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 2997 | |
6b7660cd | 2998 | /* only return the current stats */ |
1da177e4 LT |
2999 | return &adapter->net_stats; |
3000 | } | |
3001 | ||
3002 | /** | |
3003 | * e1000_change_mtu - Change the Maximum Transfer Unit | |
3004 | * @netdev: network interface device structure | |
3005 | * @new_mtu: new value for maximum frame size | |
3006 | * | |
3007 | * Returns 0 on success, negative on failure | |
3008 | **/ | |
3009 | ||
3010 | static int | |
3011 | e1000_change_mtu(struct net_device *netdev, int new_mtu) | |
3012 | { | |
60490fe0 | 3013 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3014 | int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
85b22eb6 | 3015 | uint16_t eeprom_data = 0; |
1da177e4 | 3016 | |
96838a40 JB |
3017 | if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || |
3018 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
3019 | DPRINTK(PROBE, ERR, "Invalid MTU setting\n"); | |
1da177e4 | 3020 | return -EINVAL; |
2d7edb92 | 3021 | } |
1da177e4 | 3022 | |
997f5cbd JK |
3023 | /* Adapter-specific max frame size limits. */ |
3024 | switch (adapter->hw.mac_type) { | |
9e2feace | 3025 | case e1000_undefined ... e1000_82542_rev2_1: |
997f5cbd JK |
3026 | if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) { |
3027 | DPRINTK(PROBE, ERR, "Jumbo Frames not supported.\n"); | |
2d7edb92 | 3028 | return -EINVAL; |
2d7edb92 | 3029 | } |
997f5cbd | 3030 | break; |
85b22eb6 JK |
3031 | case e1000_82573: |
3032 | /* only enable jumbo frames if ASPM is disabled completely | |
3033 | * this means both bits must be zero in 0x1A bits 3:2 */ | |
3034 | e1000_read_eeprom(&adapter->hw, EEPROM_INIT_3GIO_3, 1, | |
3035 | &eeprom_data); | |
3036 | if (eeprom_data & EEPROM_WORD1A_ASPM_MASK) { | |
3037 | if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) { | |
3038 | DPRINTK(PROBE, ERR, | |
3039 | "Jumbo Frames not supported.\n"); | |
3040 | return -EINVAL; | |
3041 | } | |
3042 | break; | |
3043 | } | |
3044 | /* fall through to get support */ | |
997f5cbd JK |
3045 | case e1000_82571: |
3046 | case e1000_82572: | |
87041639 | 3047 | case e1000_80003es2lan: |
997f5cbd JK |
3048 | #define MAX_STD_JUMBO_FRAME_SIZE 9234 |
3049 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { | |
3050 | DPRINTK(PROBE, ERR, "MTU > 9216 not supported.\n"); | |
3051 | return -EINVAL; | |
3052 | } | |
3053 | break; | |
3054 | default: | |
3055 | /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */ | |
3056 | break; | |
1da177e4 LT |
3057 | } |
3058 | ||
9e2feace AK |
3059 | /* NOTE: dev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
3060 | * means we reserve 2 more, this pushes us to allocate from the next | |
3061 | * larger slab size | |
3062 | * i.e. RXBUFFER_2048 --> size-4096 slab */ | |
3063 | ||
3064 | if (max_frame <= E1000_RXBUFFER_256) | |
3065 | adapter->rx_buffer_len = E1000_RXBUFFER_256; | |
3066 | else if (max_frame <= E1000_RXBUFFER_512) | |
3067 | adapter->rx_buffer_len = E1000_RXBUFFER_512; | |
3068 | else if (max_frame <= E1000_RXBUFFER_1024) | |
3069 | adapter->rx_buffer_len = E1000_RXBUFFER_1024; | |
3070 | else if (max_frame <= E1000_RXBUFFER_2048) | |
3071 | adapter->rx_buffer_len = E1000_RXBUFFER_2048; | |
3072 | else if (max_frame <= E1000_RXBUFFER_4096) | |
3073 | adapter->rx_buffer_len = E1000_RXBUFFER_4096; | |
3074 | else if (max_frame <= E1000_RXBUFFER_8192) | |
3075 | adapter->rx_buffer_len = E1000_RXBUFFER_8192; | |
3076 | else if (max_frame <= E1000_RXBUFFER_16384) | |
3077 | adapter->rx_buffer_len = E1000_RXBUFFER_16384; | |
3078 | ||
3079 | /* adjust allocation if LPE protects us, and we aren't using SBP */ | |
3080 | #define MAXIMUM_ETHERNET_VLAN_SIZE 1522 | |
3081 | if (!adapter->hw.tbi_compatibility_on && | |
3082 | ((max_frame == MAXIMUM_ETHERNET_FRAME_SIZE) || | |
3083 | (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE))) | |
3084 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; | |
997f5cbd | 3085 | |
2d7edb92 MC |
3086 | netdev->mtu = new_mtu; |
3087 | ||
2db10a08 AK |
3088 | if (netif_running(netdev)) |
3089 | e1000_reinit_locked(adapter); | |
1da177e4 | 3090 | |
1da177e4 LT |
3091 | adapter->hw.max_frame_size = max_frame; |
3092 | ||
3093 | return 0; | |
3094 | } | |
3095 | ||
3096 | /** | |
3097 | * e1000_update_stats - Update the board statistics counters | |
3098 | * @adapter: board private structure | |
3099 | **/ | |
3100 | ||
3101 | void | |
3102 | e1000_update_stats(struct e1000_adapter *adapter) | |
3103 | { | |
3104 | struct e1000_hw *hw = &adapter->hw; | |
a487a8f7 | 3105 | struct pci_dev *pdev = adapter->pdev; |
1da177e4 LT |
3106 | unsigned long flags; |
3107 | uint16_t phy_tmp; | |
3108 | ||
3109 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF | |
3110 | ||
a487a8f7 AK |
3111 | /* |
3112 | * Prevent stats update while adapter is being reset, or if the pci | |
3113 | * connection is down. | |
3114 | */ | |
9026729b | 3115 | if (adapter->link_speed == 0) |
a487a8f7 AK |
3116 | return; |
3117 | if (pdev->error_state && pdev->error_state != pci_channel_io_normal) | |
9026729b AK |
3118 | return; |
3119 | ||
1da177e4 LT |
3120 | spin_lock_irqsave(&adapter->stats_lock, flags); |
3121 | ||
3122 | /* these counters are modified from e1000_adjust_tbi_stats, | |
3123 | * called from the interrupt context, so they must only | |
3124 | * be written while holding adapter->stats_lock | |
3125 | */ | |
3126 | ||
3127 | adapter->stats.crcerrs += E1000_READ_REG(hw, CRCERRS); | |
3128 | adapter->stats.gprc += E1000_READ_REG(hw, GPRC); | |
3129 | adapter->stats.gorcl += E1000_READ_REG(hw, GORCL); | |
3130 | adapter->stats.gorch += E1000_READ_REG(hw, GORCH); | |
3131 | adapter->stats.bprc += E1000_READ_REG(hw, BPRC); | |
3132 | adapter->stats.mprc += E1000_READ_REG(hw, MPRC); | |
3133 | adapter->stats.roc += E1000_READ_REG(hw, ROC); | |
3134 | adapter->stats.prc64 += E1000_READ_REG(hw, PRC64); | |
3135 | adapter->stats.prc127 += E1000_READ_REG(hw, PRC127); | |
3136 | adapter->stats.prc255 += E1000_READ_REG(hw, PRC255); | |
3137 | adapter->stats.prc511 += E1000_READ_REG(hw, PRC511); | |
3138 | adapter->stats.prc1023 += E1000_READ_REG(hw, PRC1023); | |
3139 | adapter->stats.prc1522 += E1000_READ_REG(hw, PRC1522); | |
3140 | ||
3141 | adapter->stats.symerrs += E1000_READ_REG(hw, SYMERRS); | |
3142 | adapter->stats.mpc += E1000_READ_REG(hw, MPC); | |
3143 | adapter->stats.scc += E1000_READ_REG(hw, SCC); | |
3144 | adapter->stats.ecol += E1000_READ_REG(hw, ECOL); | |
3145 | adapter->stats.mcc += E1000_READ_REG(hw, MCC); | |
3146 | adapter->stats.latecol += E1000_READ_REG(hw, LATECOL); | |
3147 | adapter->stats.dc += E1000_READ_REG(hw, DC); | |
3148 | adapter->stats.sec += E1000_READ_REG(hw, SEC); | |
3149 | adapter->stats.rlec += E1000_READ_REG(hw, RLEC); | |
3150 | adapter->stats.xonrxc += E1000_READ_REG(hw, XONRXC); | |
3151 | adapter->stats.xontxc += E1000_READ_REG(hw, XONTXC); | |
3152 | adapter->stats.xoffrxc += E1000_READ_REG(hw, XOFFRXC); | |
3153 | adapter->stats.xofftxc += E1000_READ_REG(hw, XOFFTXC); | |
3154 | adapter->stats.fcruc += E1000_READ_REG(hw, FCRUC); | |
3155 | adapter->stats.gptc += E1000_READ_REG(hw, GPTC); | |
3156 | adapter->stats.gotcl += E1000_READ_REG(hw, GOTCL); | |
3157 | adapter->stats.gotch += E1000_READ_REG(hw, GOTCH); | |
3158 | adapter->stats.rnbc += E1000_READ_REG(hw, RNBC); | |
3159 | adapter->stats.ruc += E1000_READ_REG(hw, RUC); | |
3160 | adapter->stats.rfc += E1000_READ_REG(hw, RFC); | |
3161 | adapter->stats.rjc += E1000_READ_REG(hw, RJC); | |
3162 | adapter->stats.torl += E1000_READ_REG(hw, TORL); | |
3163 | adapter->stats.torh += E1000_READ_REG(hw, TORH); | |
3164 | adapter->stats.totl += E1000_READ_REG(hw, TOTL); | |
3165 | adapter->stats.toth += E1000_READ_REG(hw, TOTH); | |
3166 | adapter->stats.tpr += E1000_READ_REG(hw, TPR); | |
3167 | adapter->stats.ptc64 += E1000_READ_REG(hw, PTC64); | |
3168 | adapter->stats.ptc127 += E1000_READ_REG(hw, PTC127); | |
3169 | adapter->stats.ptc255 += E1000_READ_REG(hw, PTC255); | |
3170 | adapter->stats.ptc511 += E1000_READ_REG(hw, PTC511); | |
3171 | adapter->stats.ptc1023 += E1000_READ_REG(hw, PTC1023); | |
3172 | adapter->stats.ptc1522 += E1000_READ_REG(hw, PTC1522); | |
3173 | adapter->stats.mptc += E1000_READ_REG(hw, MPTC); | |
3174 | adapter->stats.bptc += E1000_READ_REG(hw, BPTC); | |
3175 | ||
3176 | /* used for adaptive IFS */ | |
3177 | ||
3178 | hw->tx_packet_delta = E1000_READ_REG(hw, TPT); | |
3179 | adapter->stats.tpt += hw->tx_packet_delta; | |
3180 | hw->collision_delta = E1000_READ_REG(hw, COLC); | |
3181 | adapter->stats.colc += hw->collision_delta; | |
3182 | ||
96838a40 | 3183 | if (hw->mac_type >= e1000_82543) { |
1da177e4 LT |
3184 | adapter->stats.algnerrc += E1000_READ_REG(hw, ALGNERRC); |
3185 | adapter->stats.rxerrc += E1000_READ_REG(hw, RXERRC); | |
3186 | adapter->stats.tncrs += E1000_READ_REG(hw, TNCRS); | |
3187 | adapter->stats.cexterr += E1000_READ_REG(hw, CEXTERR); | |
3188 | adapter->stats.tsctc += E1000_READ_REG(hw, TSCTC); | |
3189 | adapter->stats.tsctfc += E1000_READ_REG(hw, TSCTFC); | |
3190 | } | |
96838a40 | 3191 | if (hw->mac_type > e1000_82547_rev_2) { |
2d7edb92 MC |
3192 | adapter->stats.iac += E1000_READ_REG(hw, IAC); |
3193 | adapter->stats.icrxoc += E1000_READ_REG(hw, ICRXOC); | |
3194 | adapter->stats.icrxptc += E1000_READ_REG(hw, ICRXPTC); | |
3195 | adapter->stats.icrxatc += E1000_READ_REG(hw, ICRXATC); | |
3196 | adapter->stats.ictxptc += E1000_READ_REG(hw, ICTXPTC); | |
3197 | adapter->stats.ictxatc += E1000_READ_REG(hw, ICTXATC); | |
3198 | adapter->stats.ictxqec += E1000_READ_REG(hw, ICTXQEC); | |
3199 | adapter->stats.ictxqmtc += E1000_READ_REG(hw, ICTXQMTC); | |
3200 | adapter->stats.icrxdmtc += E1000_READ_REG(hw, ICRXDMTC); | |
3201 | } | |
1da177e4 LT |
3202 | |
3203 | /* Fill out the OS statistics structure */ | |
3204 | ||
3205 | adapter->net_stats.rx_packets = adapter->stats.gprc; | |
3206 | adapter->net_stats.tx_packets = adapter->stats.gptc; | |
3207 | adapter->net_stats.rx_bytes = adapter->stats.gorcl; | |
3208 | adapter->net_stats.tx_bytes = adapter->stats.gotcl; | |
3209 | adapter->net_stats.multicast = adapter->stats.mprc; | |
3210 | adapter->net_stats.collisions = adapter->stats.colc; | |
3211 | ||
3212 | /* Rx Errors */ | |
3213 | ||
87041639 JK |
3214 | /* RLEC on some newer hardware can be incorrect so build |
3215 | * our own version based on RUC and ROC */ | |
1da177e4 LT |
3216 | adapter->net_stats.rx_errors = adapter->stats.rxerrc + |
3217 | adapter->stats.crcerrs + adapter->stats.algnerrc + | |
87041639 JK |
3218 | adapter->stats.ruc + adapter->stats.roc + |
3219 | adapter->stats.cexterr; | |
87041639 JK |
3220 | adapter->net_stats.rx_length_errors = adapter->stats.ruc + |
3221 | adapter->stats.roc; | |
1da177e4 LT |
3222 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; |
3223 | adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; | |
1da177e4 LT |
3224 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; |
3225 | ||
3226 | /* Tx Errors */ | |
3227 | ||
3228 | adapter->net_stats.tx_errors = adapter->stats.ecol + | |
3229 | adapter->stats.latecol; | |
3230 | adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; | |
3231 | adapter->net_stats.tx_window_errors = adapter->stats.latecol; | |
3232 | adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; | |
3233 | ||
3234 | /* Tx Dropped needs to be maintained elsewhere */ | |
3235 | ||
3236 | /* Phy Stats */ | |
3237 | ||
96838a40 JB |
3238 | if (hw->media_type == e1000_media_type_copper) { |
3239 | if ((adapter->link_speed == SPEED_1000) && | |
1da177e4 LT |
3240 | (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
3241 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; | |
3242 | adapter->phy_stats.idle_errors += phy_tmp; | |
3243 | } | |
3244 | ||
96838a40 | 3245 | if ((hw->mac_type <= e1000_82546) && |
1da177e4 LT |
3246 | (hw->phy_type == e1000_phy_m88) && |
3247 | !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) | |
3248 | adapter->phy_stats.receive_errors += phy_tmp; | |
3249 | } | |
3250 | ||
3251 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
3252 | } | |
3253 | ||
3254 | /** | |
3255 | * e1000_intr - Interrupt Handler | |
3256 | * @irq: interrupt number | |
3257 | * @data: pointer to a network interface device structure | |
3258 | * @pt_regs: CPU registers structure | |
3259 | **/ | |
3260 | ||
3261 | static irqreturn_t | |
3262 | e1000_intr(int irq, void *data, struct pt_regs *regs) | |
3263 | { | |
3264 | struct net_device *netdev = data; | |
60490fe0 | 3265 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3266 | struct e1000_hw *hw = &adapter->hw; |
87041639 | 3267 | uint32_t rctl, icr = E1000_READ_REG(hw, ICR); |
1e613fd9 | 3268 | #ifndef CONFIG_E1000_NAPI |
581d708e | 3269 | int i; |
1e613fd9 JK |
3270 | #else |
3271 | /* Interrupt Auto-Mask...upon reading ICR, | |
3272 | * interrupts are masked. No need for the | |
3273 | * IMC write, but it does mean we should | |
3274 | * account for it ASAP. */ | |
3275 | if (likely(hw->mac_type >= e1000_82571)) | |
3276 | atomic_inc(&adapter->irq_sem); | |
be2b28ed | 3277 | #endif |
1da177e4 | 3278 | |
1e613fd9 JK |
3279 | if (unlikely(!icr)) { |
3280 | #ifdef CONFIG_E1000_NAPI | |
3281 | if (hw->mac_type >= e1000_82571) | |
3282 | e1000_irq_enable(adapter); | |
3283 | #endif | |
1da177e4 | 3284 | return IRQ_NONE; /* Not our interrupt */ |
1e613fd9 | 3285 | } |
1da177e4 | 3286 | |
96838a40 | 3287 | if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { |
1da177e4 | 3288 | hw->get_link_status = 1; |
87041639 JK |
3289 | /* 80003ES2LAN workaround-- |
3290 | * For packet buffer work-around on link down event; | |
3291 | * disable receives here in the ISR and | |
3292 | * reset adapter in watchdog | |
3293 | */ | |
3294 | if (netif_carrier_ok(netdev) && | |
3295 | (adapter->hw.mac_type == e1000_80003es2lan)) { | |
3296 | /* disable receives */ | |
3297 | rctl = E1000_READ_REG(hw, RCTL); | |
3298 | E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); | |
3299 | } | |
1da177e4 LT |
3300 | mod_timer(&adapter->watchdog_timer, jiffies); |
3301 | } | |
3302 | ||
3303 | #ifdef CONFIG_E1000_NAPI | |
1e613fd9 JK |
3304 | if (unlikely(hw->mac_type < e1000_82571)) { |
3305 | atomic_inc(&adapter->irq_sem); | |
3306 | E1000_WRITE_REG(hw, IMC, ~0); | |
3307 | E1000_WRITE_FLUSH(hw); | |
3308 | } | |
581d708e MC |
3309 | if (likely(netif_rx_schedule_prep(&adapter->polling_netdev[0]))) |
3310 | __netif_rx_schedule(&adapter->polling_netdev[0]); | |
3311 | else | |
3312 | e1000_irq_enable(adapter); | |
c1605eb3 | 3313 | #else |
1da177e4 | 3314 | /* Writing IMC and IMS is needed for 82547. |
96838a40 JB |
3315 | * Due to Hub Link bus being occupied, an interrupt |
3316 | * de-assertion message is not able to be sent. | |
3317 | * When an interrupt assertion message is generated later, | |
3318 | * two messages are re-ordered and sent out. | |
3319 | * That causes APIC to think 82547 is in de-assertion | |
3320 | * state, while 82547 is in assertion state, resulting | |
3321 | * in dead lock. Writing IMC forces 82547 into | |
3322 | * de-assertion state. | |
3323 | */ | |
3324 | if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) { | |
1da177e4 | 3325 | atomic_inc(&adapter->irq_sem); |
2648345f | 3326 | E1000_WRITE_REG(hw, IMC, ~0); |
1da177e4 LT |
3327 | } |
3328 | ||
96838a40 JB |
3329 | for (i = 0; i < E1000_MAX_INTR; i++) |
3330 | if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) & | |
581d708e | 3331 | !e1000_clean_tx_irq(adapter, adapter->tx_ring))) |
1da177e4 LT |
3332 | break; |
3333 | ||
96838a40 | 3334 | if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) |
1da177e4 | 3335 | e1000_irq_enable(adapter); |
581d708e | 3336 | |
c1605eb3 | 3337 | #endif |
1da177e4 LT |
3338 | |
3339 | return IRQ_HANDLED; | |
3340 | } | |
3341 | ||
3342 | #ifdef CONFIG_E1000_NAPI | |
3343 | /** | |
3344 | * e1000_clean - NAPI Rx polling callback | |
3345 | * @adapter: board private structure | |
3346 | **/ | |
3347 | ||
3348 | static int | |
581d708e | 3349 | e1000_clean(struct net_device *poll_dev, int *budget) |
1da177e4 | 3350 | { |
581d708e MC |
3351 | struct e1000_adapter *adapter; |
3352 | int work_to_do = min(*budget, poll_dev->quota); | |
38bd3b26 | 3353 | int tx_cleaned = 0, i = 0, work_done = 0; |
581d708e MC |
3354 | |
3355 | /* Must NOT use netdev_priv macro here. */ | |
3356 | adapter = poll_dev->priv; | |
3357 | ||
3358 | /* Keep link state information with original netdev */ | |
3359 | if (!netif_carrier_ok(adapter->netdev)) | |
3360 | goto quit_polling; | |
2648345f | 3361 | |
581d708e MC |
3362 | while (poll_dev != &adapter->polling_netdev[i]) { |
3363 | i++; | |
5d9428de | 3364 | BUG_ON(i == adapter->num_rx_queues); |
581d708e MC |
3365 | } |
3366 | ||
8241e35e JK |
3367 | if (likely(adapter->num_tx_queues == 1)) { |
3368 | /* e1000_clean is called per-cpu. This lock protects | |
3369 | * tx_ring[0] from being cleaned by multiple cpus | |
3370 | * simultaneously. A failure obtaining the lock means | |
3371 | * tx_ring[0] is currently being cleaned anyway. */ | |
3372 | if (spin_trylock(&adapter->tx_queue_lock)) { | |
3373 | tx_cleaned = e1000_clean_tx_irq(adapter, | |
3374 | &adapter->tx_ring[0]); | |
3375 | spin_unlock(&adapter->tx_queue_lock); | |
3376 | } | |
3377 | } else | |
3378 | tx_cleaned = e1000_clean_tx_irq(adapter, &adapter->tx_ring[i]); | |
3379 | ||
581d708e MC |
3380 | adapter->clean_rx(adapter, &adapter->rx_ring[i], |
3381 | &work_done, work_to_do); | |
1da177e4 LT |
3382 | |
3383 | *budget -= work_done; | |
581d708e | 3384 | poll_dev->quota -= work_done; |
96838a40 | 3385 | |
2b02893e | 3386 | /* If no Tx and not enough Rx work done, exit the polling mode */ |
96838a40 | 3387 | if ((!tx_cleaned && (work_done == 0)) || |
581d708e MC |
3388 | !netif_running(adapter->netdev)) { |
3389 | quit_polling: | |
3390 | netif_rx_complete(poll_dev); | |
1da177e4 LT |
3391 | e1000_irq_enable(adapter); |
3392 | return 0; | |
3393 | } | |
3394 | ||
3395 | return 1; | |
3396 | } | |
3397 | ||
3398 | #endif | |
3399 | /** | |
3400 | * e1000_clean_tx_irq - Reclaim resources after transmit completes | |
3401 | * @adapter: board private structure | |
3402 | **/ | |
3403 | ||
3404 | static boolean_t | |
581d708e MC |
3405 | e1000_clean_tx_irq(struct e1000_adapter *adapter, |
3406 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 3407 | { |
1da177e4 LT |
3408 | struct net_device *netdev = adapter->netdev; |
3409 | struct e1000_tx_desc *tx_desc, *eop_desc; | |
3410 | struct e1000_buffer *buffer_info; | |
3411 | unsigned int i, eop; | |
2a1af5d7 JK |
3412 | #ifdef CONFIG_E1000_NAPI |
3413 | unsigned int count = 0; | |
3414 | #endif | |
1da177e4 LT |
3415 | boolean_t cleaned = FALSE; |
3416 | ||
3417 | i = tx_ring->next_to_clean; | |
3418 | eop = tx_ring->buffer_info[i].next_to_watch; | |
3419 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
3420 | ||
581d708e | 3421 | while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) { |
96838a40 | 3422 | for (cleaned = FALSE; !cleaned; ) { |
1da177e4 LT |
3423 | tx_desc = E1000_TX_DESC(*tx_ring, i); |
3424 | buffer_info = &tx_ring->buffer_info[i]; | |
3425 | cleaned = (i == eop); | |
3426 | ||
fd803241 | 3427 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
8241e35e | 3428 | memset(tx_desc, 0, sizeof(struct e1000_tx_desc)); |
1da177e4 | 3429 | |
96838a40 | 3430 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 | 3431 | } |
581d708e | 3432 | |
7bfa4816 | 3433 | |
1da177e4 LT |
3434 | eop = tx_ring->buffer_info[i].next_to_watch; |
3435 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
2a1af5d7 JK |
3436 | #ifdef CONFIG_E1000_NAPI |
3437 | #define E1000_TX_WEIGHT 64 | |
3438 | /* weight of a sort for tx, to avoid endless transmit cleanup */ | |
3439 | if (count++ == E1000_TX_WEIGHT) break; | |
3440 | #endif | |
1da177e4 LT |
3441 | } |
3442 | ||
3443 | tx_ring->next_to_clean = i; | |
3444 | ||
77b2aad5 | 3445 | #define TX_WAKE_THRESHOLD 32 |
96838a40 | 3446 | if (unlikely(cleaned && netif_queue_stopped(netdev) && |
77b2aad5 AK |
3447 | netif_carrier_ok(netdev))) { |
3448 | spin_lock(&tx_ring->tx_lock); | |
3449 | if (netif_queue_stopped(netdev) && | |
3450 | (E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) | |
3451 | netif_wake_queue(netdev); | |
3452 | spin_unlock(&tx_ring->tx_lock); | |
3453 | } | |
2648345f | 3454 | |
581d708e | 3455 | if (adapter->detect_tx_hung) { |
2648345f | 3456 | /* Detect a transmit hang in hardware, this serializes the |
1da177e4 LT |
3457 | * check with the clearing of time_stamp and movement of i */ |
3458 | adapter->detect_tx_hung = FALSE; | |
392137fa JK |
3459 | if (tx_ring->buffer_info[eop].dma && |
3460 | time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + | |
7e6c9861 | 3461 | (adapter->tx_timeout_factor * HZ)) |
70b8f1e1 | 3462 | && !(E1000_READ_REG(&adapter->hw, STATUS) & |
392137fa | 3463 | E1000_STATUS_TXOFF)) { |
70b8f1e1 MC |
3464 | |
3465 | /* detected Tx unit hang */ | |
c6963ef5 | 3466 | DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" |
7bfa4816 | 3467 | " Tx Queue <%lu>\n" |
70b8f1e1 MC |
3468 | " TDH <%x>\n" |
3469 | " TDT <%x>\n" | |
3470 | " next_to_use <%x>\n" | |
3471 | " next_to_clean <%x>\n" | |
3472 | "buffer_info[next_to_clean]\n" | |
70b8f1e1 MC |
3473 | " time_stamp <%lx>\n" |
3474 | " next_to_watch <%x>\n" | |
3475 | " jiffies <%lx>\n" | |
3476 | " next_to_watch.status <%x>\n", | |
7bfa4816 JK |
3477 | (unsigned long)((tx_ring - adapter->tx_ring) / |
3478 | sizeof(struct e1000_tx_ring)), | |
581d708e MC |
3479 | readl(adapter->hw.hw_addr + tx_ring->tdh), |
3480 | readl(adapter->hw.hw_addr + tx_ring->tdt), | |
70b8f1e1 | 3481 | tx_ring->next_to_use, |
392137fa JK |
3482 | tx_ring->next_to_clean, |
3483 | tx_ring->buffer_info[eop].time_stamp, | |
70b8f1e1 MC |
3484 | eop, |
3485 | jiffies, | |
3486 | eop_desc->upper.fields.status); | |
1da177e4 | 3487 | netif_stop_queue(netdev); |
70b8f1e1 | 3488 | } |
1da177e4 | 3489 | } |
1da177e4 LT |
3490 | return cleaned; |
3491 | } | |
3492 | ||
3493 | /** | |
3494 | * e1000_rx_checksum - Receive Checksum Offload for 82543 | |
2d7edb92 MC |
3495 | * @adapter: board private structure |
3496 | * @status_err: receive descriptor status and error fields | |
3497 | * @csum: receive descriptor csum field | |
3498 | * @sk_buff: socket buffer with received data | |
1da177e4 LT |
3499 | **/ |
3500 | ||
e619d523 | 3501 | static void |
1da177e4 | 3502 | e1000_rx_checksum(struct e1000_adapter *adapter, |
2d7edb92 MC |
3503 | uint32_t status_err, uint32_t csum, |
3504 | struct sk_buff *skb) | |
1da177e4 | 3505 | { |
2d7edb92 MC |
3506 | uint16_t status = (uint16_t)status_err; |
3507 | uint8_t errors = (uint8_t)(status_err >> 24); | |
3508 | skb->ip_summed = CHECKSUM_NONE; | |
3509 | ||
1da177e4 | 3510 | /* 82543 or newer only */ |
96838a40 | 3511 | if (unlikely(adapter->hw.mac_type < e1000_82543)) return; |
1da177e4 | 3512 | /* Ignore Checksum bit is set */ |
96838a40 | 3513 | if (unlikely(status & E1000_RXD_STAT_IXSM)) return; |
2d7edb92 | 3514 | /* TCP/UDP checksum error bit is set */ |
96838a40 | 3515 | if (unlikely(errors & E1000_RXD_ERR_TCPE)) { |
1da177e4 | 3516 | /* let the stack verify checksum errors */ |
1da177e4 | 3517 | adapter->hw_csum_err++; |
2d7edb92 MC |
3518 | return; |
3519 | } | |
3520 | /* TCP/UDP Checksum has not been calculated */ | |
96838a40 JB |
3521 | if (adapter->hw.mac_type <= e1000_82547_rev_2) { |
3522 | if (!(status & E1000_RXD_STAT_TCPCS)) | |
2d7edb92 | 3523 | return; |
1da177e4 | 3524 | } else { |
96838a40 | 3525 | if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) |
2d7edb92 MC |
3526 | return; |
3527 | } | |
3528 | /* It must be a TCP or UDP packet with a valid checksum */ | |
3529 | if (likely(status & E1000_RXD_STAT_TCPCS)) { | |
1da177e4 LT |
3530 | /* TCP checksum is good */ |
3531 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
2d7edb92 MC |
3532 | } else if (adapter->hw.mac_type > e1000_82547_rev_2) { |
3533 | /* IP fragment with UDP payload */ | |
3534 | /* Hardware complements the payload checksum, so we undo it | |
3535 | * and then put the value in host order for further stack use. | |
3536 | */ | |
3537 | csum = ntohl(csum ^ 0xFFFF); | |
3538 | skb->csum = csum; | |
3539 | skb->ip_summed = CHECKSUM_HW; | |
1da177e4 | 3540 | } |
2d7edb92 | 3541 | adapter->hw_csum_good++; |
1da177e4 LT |
3542 | } |
3543 | ||
3544 | /** | |
2d7edb92 | 3545 | * e1000_clean_rx_irq - Send received data up the network stack; legacy |
1da177e4 LT |
3546 | * @adapter: board private structure |
3547 | **/ | |
3548 | ||
3549 | static boolean_t | |
3550 | #ifdef CONFIG_E1000_NAPI | |
581d708e MC |
3551 | e1000_clean_rx_irq(struct e1000_adapter *adapter, |
3552 | struct e1000_rx_ring *rx_ring, | |
3553 | int *work_done, int work_to_do) | |
1da177e4 | 3554 | #else |
581d708e MC |
3555 | e1000_clean_rx_irq(struct e1000_adapter *adapter, |
3556 | struct e1000_rx_ring *rx_ring) | |
1da177e4 LT |
3557 | #endif |
3558 | { | |
1da177e4 LT |
3559 | struct net_device *netdev = adapter->netdev; |
3560 | struct pci_dev *pdev = adapter->pdev; | |
86c3d59f JB |
3561 | struct e1000_rx_desc *rx_desc, *next_rxd; |
3562 | struct e1000_buffer *buffer_info, *next_buffer; | |
1da177e4 LT |
3563 | unsigned long flags; |
3564 | uint32_t length; | |
3565 | uint8_t last_byte; | |
3566 | unsigned int i; | |
72d64a43 | 3567 | int cleaned_count = 0; |
a1415ee6 | 3568 | boolean_t cleaned = FALSE; |
1da177e4 LT |
3569 | |
3570 | i = rx_ring->next_to_clean; | |
3571 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
b92ff8ee | 3572 | buffer_info = &rx_ring->buffer_info[i]; |
1da177e4 | 3573 | |
b92ff8ee | 3574 | while (rx_desc->status & E1000_RXD_STAT_DD) { |
24f476ee | 3575 | struct sk_buff *skb; |
a292ca6e | 3576 | u8 status; |
1da177e4 | 3577 | #ifdef CONFIG_E1000_NAPI |
96838a40 | 3578 | if (*work_done >= work_to_do) |
1da177e4 LT |
3579 | break; |
3580 | (*work_done)++; | |
3581 | #endif | |
a292ca6e | 3582 | status = rx_desc->status; |
b92ff8ee | 3583 | skb = buffer_info->skb; |
86c3d59f JB |
3584 | buffer_info->skb = NULL; |
3585 | ||
30320be8 JK |
3586 | prefetch(skb->data - NET_IP_ALIGN); |
3587 | ||
86c3d59f JB |
3588 | if (++i == rx_ring->count) i = 0; |
3589 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
30320be8 JK |
3590 | prefetch(next_rxd); |
3591 | ||
86c3d59f | 3592 | next_buffer = &rx_ring->buffer_info[i]; |
86c3d59f | 3593 | |
72d64a43 JK |
3594 | cleaned = TRUE; |
3595 | cleaned_count++; | |
a292ca6e JK |
3596 | pci_unmap_single(pdev, |
3597 | buffer_info->dma, | |
3598 | buffer_info->length, | |
1da177e4 LT |
3599 | PCI_DMA_FROMDEVICE); |
3600 | ||
1da177e4 LT |
3601 | length = le16_to_cpu(rx_desc->length); |
3602 | ||
a1415ee6 JK |
3603 | if (unlikely(!(status & E1000_RXD_STAT_EOP))) { |
3604 | /* All receives must fit into a single buffer */ | |
3605 | E1000_DBG("%s: Receive packet consumed multiple" | |
3606 | " buffers\n", netdev->name); | |
3607 | dev_kfree_skb_irq(skb); | |
1da177e4 LT |
3608 | goto next_desc; |
3609 | } | |
3610 | ||
96838a40 | 3611 | if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { |
1da177e4 | 3612 | last_byte = *(skb->data + length - 1); |
b92ff8ee | 3613 | if (TBI_ACCEPT(&adapter->hw, status, |
1da177e4 LT |
3614 | rx_desc->errors, length, last_byte)) { |
3615 | spin_lock_irqsave(&adapter->stats_lock, flags); | |
a292ca6e JK |
3616 | e1000_tbi_adjust_stats(&adapter->hw, |
3617 | &adapter->stats, | |
1da177e4 LT |
3618 | length, skb->data); |
3619 | spin_unlock_irqrestore(&adapter->stats_lock, | |
3620 | flags); | |
3621 | length--; | |
3622 | } else { | |
9e2feace AK |
3623 | /* recycle */ |
3624 | buffer_info->skb = skb; | |
1da177e4 LT |
3625 | goto next_desc; |
3626 | } | |
1cb5821f | 3627 | } |
1da177e4 | 3628 | |
a292ca6e JK |
3629 | /* code added for copybreak, this should improve |
3630 | * performance for small packets with large amounts | |
3631 | * of reassembly being done in the stack */ | |
3632 | #define E1000_CB_LENGTH 256 | |
a1415ee6 | 3633 | if (length < E1000_CB_LENGTH) { |
a292ca6e JK |
3634 | struct sk_buff *new_skb = |
3635 | dev_alloc_skb(length + NET_IP_ALIGN); | |
3636 | if (new_skb) { | |
3637 | skb_reserve(new_skb, NET_IP_ALIGN); | |
3638 | new_skb->dev = netdev; | |
3639 | memcpy(new_skb->data - NET_IP_ALIGN, | |
3640 | skb->data - NET_IP_ALIGN, | |
3641 | length + NET_IP_ALIGN); | |
3642 | /* save the skb in buffer_info as good */ | |
3643 | buffer_info->skb = skb; | |
3644 | skb = new_skb; | |
3645 | skb_put(skb, length); | |
3646 | } | |
a1415ee6 JK |
3647 | } else |
3648 | skb_put(skb, length); | |
a292ca6e JK |
3649 | |
3650 | /* end copybreak code */ | |
1da177e4 LT |
3651 | |
3652 | /* Receive Checksum Offload */ | |
a292ca6e JK |
3653 | e1000_rx_checksum(adapter, |
3654 | (uint32_t)(status) | | |
2d7edb92 | 3655 | ((uint32_t)(rx_desc->errors) << 24), |
c3d7a3a4 | 3656 | le16_to_cpu(rx_desc->csum), skb); |
96838a40 | 3657 | |
1da177e4 LT |
3658 | skb->protocol = eth_type_trans(skb, netdev); |
3659 | #ifdef CONFIG_E1000_NAPI | |
96838a40 | 3660 | if (unlikely(adapter->vlgrp && |
a292ca6e | 3661 | (status & E1000_RXD_STAT_VP))) { |
1da177e4 | 3662 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
2d7edb92 MC |
3663 | le16_to_cpu(rx_desc->special) & |
3664 | E1000_RXD_SPC_VLAN_MASK); | |
1da177e4 LT |
3665 | } else { |
3666 | netif_receive_skb(skb); | |
3667 | } | |
3668 | #else /* CONFIG_E1000_NAPI */ | |
96838a40 | 3669 | if (unlikely(adapter->vlgrp && |
b92ff8ee | 3670 | (status & E1000_RXD_STAT_VP))) { |
1da177e4 LT |
3671 | vlan_hwaccel_rx(skb, adapter->vlgrp, |
3672 | le16_to_cpu(rx_desc->special) & | |
3673 | E1000_RXD_SPC_VLAN_MASK); | |
3674 | } else { | |
3675 | netif_rx(skb); | |
3676 | } | |
3677 | #endif /* CONFIG_E1000_NAPI */ | |
3678 | netdev->last_rx = jiffies; | |
3679 | ||
3680 | next_desc: | |
3681 | rx_desc->status = 0; | |
1da177e4 | 3682 | |
72d64a43 JK |
3683 | /* return some buffers to hardware, one at a time is too slow */ |
3684 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
3685 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
3686 | cleaned_count = 0; | |
3687 | } | |
3688 | ||
30320be8 | 3689 | /* use prefetched values */ |
86c3d59f JB |
3690 | rx_desc = next_rxd; |
3691 | buffer_info = next_buffer; | |
1da177e4 | 3692 | } |
1da177e4 | 3693 | rx_ring->next_to_clean = i; |
72d64a43 JK |
3694 | |
3695 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
3696 | if (cleaned_count) | |
3697 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
2d7edb92 MC |
3698 | |
3699 | return cleaned; | |
3700 | } | |
3701 | ||
3702 | /** | |
3703 | * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split | |
3704 | * @adapter: board private structure | |
3705 | **/ | |
3706 | ||
3707 | static boolean_t | |
3708 | #ifdef CONFIG_E1000_NAPI | |
581d708e MC |
3709 | e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
3710 | struct e1000_rx_ring *rx_ring, | |
3711 | int *work_done, int work_to_do) | |
2d7edb92 | 3712 | #else |
581d708e MC |
3713 | e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
3714 | struct e1000_rx_ring *rx_ring) | |
2d7edb92 MC |
3715 | #endif |
3716 | { | |
86c3d59f | 3717 | union e1000_rx_desc_packet_split *rx_desc, *next_rxd; |
2d7edb92 MC |
3718 | struct net_device *netdev = adapter->netdev; |
3719 | struct pci_dev *pdev = adapter->pdev; | |
86c3d59f | 3720 | struct e1000_buffer *buffer_info, *next_buffer; |
2d7edb92 MC |
3721 | struct e1000_ps_page *ps_page; |
3722 | struct e1000_ps_page_dma *ps_page_dma; | |
24f476ee | 3723 | struct sk_buff *skb; |
2d7edb92 MC |
3724 | unsigned int i, j; |
3725 | uint32_t length, staterr; | |
72d64a43 | 3726 | int cleaned_count = 0; |
2d7edb92 MC |
3727 | boolean_t cleaned = FALSE; |
3728 | ||
3729 | i = rx_ring->next_to_clean; | |
3730 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
683a38f3 | 3731 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
9e2feace | 3732 | buffer_info = &rx_ring->buffer_info[i]; |
2d7edb92 | 3733 | |
96838a40 | 3734 | while (staterr & E1000_RXD_STAT_DD) { |
2d7edb92 MC |
3735 | ps_page = &rx_ring->ps_page[i]; |
3736 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
3737 | #ifdef CONFIG_E1000_NAPI | |
96838a40 | 3738 | if (unlikely(*work_done >= work_to_do)) |
2d7edb92 MC |
3739 | break; |
3740 | (*work_done)++; | |
3741 | #endif | |
86c3d59f JB |
3742 | skb = buffer_info->skb; |
3743 | ||
30320be8 JK |
3744 | /* in the packet split case this is header only */ |
3745 | prefetch(skb->data - NET_IP_ALIGN); | |
3746 | ||
86c3d59f JB |
3747 | if (++i == rx_ring->count) i = 0; |
3748 | next_rxd = E1000_RX_DESC_PS(*rx_ring, i); | |
30320be8 JK |
3749 | prefetch(next_rxd); |
3750 | ||
86c3d59f | 3751 | next_buffer = &rx_ring->buffer_info[i]; |
86c3d59f | 3752 | |
2d7edb92 | 3753 | cleaned = TRUE; |
72d64a43 | 3754 | cleaned_count++; |
2d7edb92 MC |
3755 | pci_unmap_single(pdev, buffer_info->dma, |
3756 | buffer_info->length, | |
3757 | PCI_DMA_FROMDEVICE); | |
3758 | ||
96838a40 | 3759 | if (unlikely(!(staterr & E1000_RXD_STAT_EOP))) { |
2d7edb92 MC |
3760 | E1000_DBG("%s: Packet Split buffers didn't pick up" |
3761 | " the full packet\n", netdev->name); | |
3762 | dev_kfree_skb_irq(skb); | |
3763 | goto next_desc; | |
3764 | } | |
1da177e4 | 3765 | |
96838a40 | 3766 | if (unlikely(staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK)) { |
2d7edb92 MC |
3767 | dev_kfree_skb_irq(skb); |
3768 | goto next_desc; | |
3769 | } | |
3770 | ||
3771 | length = le16_to_cpu(rx_desc->wb.middle.length0); | |
3772 | ||
96838a40 | 3773 | if (unlikely(!length)) { |
2d7edb92 MC |
3774 | E1000_DBG("%s: Last part of the packet spanning" |
3775 | " multiple descriptors\n", netdev->name); | |
3776 | dev_kfree_skb_irq(skb); | |
3777 | goto next_desc; | |
3778 | } | |
3779 | ||
3780 | /* Good Receive */ | |
3781 | skb_put(skb, length); | |
3782 | ||
dc7c6add JK |
3783 | { |
3784 | /* this looks ugly, but it seems compiler issues make it | |
3785 | more efficient than reusing j */ | |
3786 | int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]); | |
3787 | ||
3788 | /* page alloc/put takes too long and effects small packet | |
3789 | * throughput, so unsplit small packets and save the alloc/put*/ | |
9e2feace | 3790 | if (l1 && ((length + l1) <= adapter->rx_ps_bsize0)) { |
dc7c6add | 3791 | u8 *vaddr; |
76c224bc | 3792 | /* there is no documentation about how to call |
dc7c6add JK |
3793 | * kmap_atomic, so we can't hold the mapping |
3794 | * very long */ | |
3795 | pci_dma_sync_single_for_cpu(pdev, | |
3796 | ps_page_dma->ps_page_dma[0], | |
3797 | PAGE_SIZE, | |
3798 | PCI_DMA_FROMDEVICE); | |
3799 | vaddr = kmap_atomic(ps_page->ps_page[0], | |
3800 | KM_SKB_DATA_SOFTIRQ); | |
3801 | memcpy(skb->tail, vaddr, l1); | |
3802 | kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ); | |
3803 | pci_dma_sync_single_for_device(pdev, | |
3804 | ps_page_dma->ps_page_dma[0], | |
3805 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
3806 | skb_put(skb, l1); | |
3807 | length += l1; | |
3808 | goto copydone; | |
3809 | } /* if */ | |
3810 | } | |
3811 | ||
96838a40 | 3812 | for (j = 0; j < adapter->rx_ps_pages; j++) { |
30320be8 | 3813 | if (!(length= le16_to_cpu(rx_desc->wb.upper.length[j]))) |
2d7edb92 | 3814 | break; |
2d7edb92 MC |
3815 | pci_unmap_page(pdev, ps_page_dma->ps_page_dma[j], |
3816 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
3817 | ps_page_dma->ps_page_dma[j] = 0; | |
329bfd0b JK |
3818 | skb_fill_page_desc(skb, j, ps_page->ps_page[j], 0, |
3819 | length); | |
2d7edb92 | 3820 | ps_page->ps_page[j] = NULL; |
2d7edb92 MC |
3821 | skb->len += length; |
3822 | skb->data_len += length; | |
5d51b80f | 3823 | skb->truesize += length; |
2d7edb92 MC |
3824 | } |
3825 | ||
dc7c6add | 3826 | copydone: |
2d7edb92 | 3827 | e1000_rx_checksum(adapter, staterr, |
c3d7a3a4 | 3828 | le16_to_cpu(rx_desc->wb.lower.hi_dword.csum_ip.csum), skb); |
2d7edb92 MC |
3829 | skb->protocol = eth_type_trans(skb, netdev); |
3830 | ||
96838a40 | 3831 | if (likely(rx_desc->wb.upper.header_status & |
c3d7a3a4 | 3832 | cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP))) |
e4c811c9 | 3833 | adapter->rx_hdr_split++; |
2d7edb92 | 3834 | #ifdef CONFIG_E1000_NAPI |
96838a40 | 3835 | if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) { |
2d7edb92 | 3836 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
683a38f3 MC |
3837 | le16_to_cpu(rx_desc->wb.middle.vlan) & |
3838 | E1000_RXD_SPC_VLAN_MASK); | |
2d7edb92 MC |
3839 | } else { |
3840 | netif_receive_skb(skb); | |
3841 | } | |
3842 | #else /* CONFIG_E1000_NAPI */ | |
96838a40 | 3843 | if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) { |
2d7edb92 | 3844 | vlan_hwaccel_rx(skb, adapter->vlgrp, |
683a38f3 MC |
3845 | le16_to_cpu(rx_desc->wb.middle.vlan) & |
3846 | E1000_RXD_SPC_VLAN_MASK); | |
2d7edb92 MC |
3847 | } else { |
3848 | netif_rx(skb); | |
3849 | } | |
3850 | #endif /* CONFIG_E1000_NAPI */ | |
3851 | netdev->last_rx = jiffies; | |
3852 | ||
3853 | next_desc: | |
c3d7a3a4 | 3854 | rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF); |
2d7edb92 | 3855 | buffer_info->skb = NULL; |
2d7edb92 | 3856 | |
72d64a43 JK |
3857 | /* return some buffers to hardware, one at a time is too slow */ |
3858 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
3859 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
3860 | cleaned_count = 0; | |
3861 | } | |
3862 | ||
30320be8 | 3863 | /* use prefetched values */ |
86c3d59f JB |
3864 | rx_desc = next_rxd; |
3865 | buffer_info = next_buffer; | |
3866 | ||
683a38f3 | 3867 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
2d7edb92 MC |
3868 | } |
3869 | rx_ring->next_to_clean = i; | |
72d64a43 JK |
3870 | |
3871 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
3872 | if (cleaned_count) | |
3873 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
1da177e4 LT |
3874 | |
3875 | return cleaned; | |
3876 | } | |
3877 | ||
3878 | /** | |
2d7edb92 | 3879 | * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
1da177e4 LT |
3880 | * @adapter: address of board private structure |
3881 | **/ | |
3882 | ||
3883 | static void | |
581d708e | 3884 | e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
72d64a43 | 3885 | struct e1000_rx_ring *rx_ring, |
a292ca6e | 3886 | int cleaned_count) |
1da177e4 | 3887 | { |
1da177e4 LT |
3888 | struct net_device *netdev = adapter->netdev; |
3889 | struct pci_dev *pdev = adapter->pdev; | |
3890 | struct e1000_rx_desc *rx_desc; | |
3891 | struct e1000_buffer *buffer_info; | |
3892 | struct sk_buff *skb; | |
2648345f MC |
3893 | unsigned int i; |
3894 | unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN; | |
1da177e4 LT |
3895 | |
3896 | i = rx_ring->next_to_use; | |
3897 | buffer_info = &rx_ring->buffer_info[i]; | |
3898 | ||
a292ca6e JK |
3899 | while (cleaned_count--) { |
3900 | if (!(skb = buffer_info->skb)) | |
3901 | skb = dev_alloc_skb(bufsz); | |
3902 | else { | |
3903 | skb_trim(skb, 0); | |
3904 | goto map_skb; | |
3905 | } | |
3906 | ||
96838a40 | 3907 | if (unlikely(!skb)) { |
1da177e4 | 3908 | /* Better luck next round */ |
72d64a43 | 3909 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
3910 | break; |
3911 | } | |
3912 | ||
2648345f | 3913 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
3914 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
3915 | struct sk_buff *oldskb = skb; | |
2648345f MC |
3916 | DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes " |
3917 | "at %p\n", bufsz, skb->data); | |
3918 | /* Try again, without freeing the previous */ | |
1da177e4 | 3919 | skb = dev_alloc_skb(bufsz); |
2648345f | 3920 | /* Failed allocation, critical failure */ |
1da177e4 LT |
3921 | if (!skb) { |
3922 | dev_kfree_skb(oldskb); | |
3923 | break; | |
3924 | } | |
2648345f | 3925 | |
1da177e4 LT |
3926 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
3927 | /* give up */ | |
3928 | dev_kfree_skb(skb); | |
3929 | dev_kfree_skb(oldskb); | |
3930 | break; /* while !buffer_info->skb */ | |
3931 | } else { | |
2648345f | 3932 | /* Use new allocation */ |
1da177e4 LT |
3933 | dev_kfree_skb(oldskb); |
3934 | } | |
3935 | } | |
1da177e4 LT |
3936 | /* Make buffer alignment 2 beyond a 16 byte boundary |
3937 | * this will result in a 16 byte aligned IP header after | |
3938 | * the 14 byte MAC header is removed | |
3939 | */ | |
3940 | skb_reserve(skb, NET_IP_ALIGN); | |
3941 | ||
3942 | skb->dev = netdev; | |
3943 | ||
3944 | buffer_info->skb = skb; | |
3945 | buffer_info->length = adapter->rx_buffer_len; | |
a292ca6e | 3946 | map_skb: |
1da177e4 LT |
3947 | buffer_info->dma = pci_map_single(pdev, |
3948 | skb->data, | |
3949 | adapter->rx_buffer_len, | |
3950 | PCI_DMA_FROMDEVICE); | |
3951 | ||
2648345f MC |
3952 | /* Fix for errata 23, can't cross 64kB boundary */ |
3953 | if (!e1000_check_64k_bound(adapter, | |
3954 | (void *)(unsigned long)buffer_info->dma, | |
3955 | adapter->rx_buffer_len)) { | |
3956 | DPRINTK(RX_ERR, ERR, | |
3957 | "dma align check failed: %u bytes at %p\n", | |
3958 | adapter->rx_buffer_len, | |
3959 | (void *)(unsigned long)buffer_info->dma); | |
1da177e4 LT |
3960 | dev_kfree_skb(skb); |
3961 | buffer_info->skb = NULL; | |
3962 | ||
2648345f | 3963 | pci_unmap_single(pdev, buffer_info->dma, |
1da177e4 LT |
3964 | adapter->rx_buffer_len, |
3965 | PCI_DMA_FROMDEVICE); | |
3966 | ||
3967 | break; /* while !buffer_info->skb */ | |
3968 | } | |
1da177e4 LT |
3969 | rx_desc = E1000_RX_DESC(*rx_ring, i); |
3970 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
3971 | ||
96838a40 JB |
3972 | if (unlikely(++i == rx_ring->count)) |
3973 | i = 0; | |
1da177e4 LT |
3974 | buffer_info = &rx_ring->buffer_info[i]; |
3975 | } | |
3976 | ||
b92ff8ee JB |
3977 | if (likely(rx_ring->next_to_use != i)) { |
3978 | rx_ring->next_to_use = i; | |
3979 | if (unlikely(i-- == 0)) | |
3980 | i = (rx_ring->count - 1); | |
3981 | ||
3982 | /* Force memory writes to complete before letting h/w | |
3983 | * know there are new descriptors to fetch. (Only | |
3984 | * applicable for weak-ordered memory model archs, | |
3985 | * such as IA-64). */ | |
3986 | wmb(); | |
3987 | writel(i, adapter->hw.hw_addr + rx_ring->rdt); | |
3988 | } | |
1da177e4 LT |
3989 | } |
3990 | ||
2d7edb92 MC |
3991 | /** |
3992 | * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split | |
3993 | * @adapter: address of board private structure | |
3994 | **/ | |
3995 | ||
3996 | static void | |
581d708e | 3997 | e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, |
72d64a43 JK |
3998 | struct e1000_rx_ring *rx_ring, |
3999 | int cleaned_count) | |
2d7edb92 | 4000 | { |
2d7edb92 MC |
4001 | struct net_device *netdev = adapter->netdev; |
4002 | struct pci_dev *pdev = adapter->pdev; | |
4003 | union e1000_rx_desc_packet_split *rx_desc; | |
4004 | struct e1000_buffer *buffer_info; | |
4005 | struct e1000_ps_page *ps_page; | |
4006 | struct e1000_ps_page_dma *ps_page_dma; | |
4007 | struct sk_buff *skb; | |
4008 | unsigned int i, j; | |
4009 | ||
4010 | i = rx_ring->next_to_use; | |
4011 | buffer_info = &rx_ring->buffer_info[i]; | |
4012 | ps_page = &rx_ring->ps_page[i]; | |
4013 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
4014 | ||
72d64a43 | 4015 | while (cleaned_count--) { |
2d7edb92 MC |
4016 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
4017 | ||
96838a40 | 4018 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
e4c811c9 MC |
4019 | if (j < adapter->rx_ps_pages) { |
4020 | if (likely(!ps_page->ps_page[j])) { | |
4021 | ps_page->ps_page[j] = | |
4022 | alloc_page(GFP_ATOMIC); | |
b92ff8ee JB |
4023 | if (unlikely(!ps_page->ps_page[j])) { |
4024 | adapter->alloc_rx_buff_failed++; | |
e4c811c9 | 4025 | goto no_buffers; |
b92ff8ee | 4026 | } |
e4c811c9 MC |
4027 | ps_page_dma->ps_page_dma[j] = |
4028 | pci_map_page(pdev, | |
4029 | ps_page->ps_page[j], | |
4030 | 0, PAGE_SIZE, | |
4031 | PCI_DMA_FROMDEVICE); | |
4032 | } | |
4033 | /* Refresh the desc even if buffer_addrs didn't | |
96838a40 | 4034 | * change because each write-back erases |
e4c811c9 MC |
4035 | * this info. |
4036 | */ | |
4037 | rx_desc->read.buffer_addr[j+1] = | |
4038 | cpu_to_le64(ps_page_dma->ps_page_dma[j]); | |
4039 | } else | |
4040 | rx_desc->read.buffer_addr[j+1] = ~0; | |
2d7edb92 MC |
4041 | } |
4042 | ||
4043 | skb = dev_alloc_skb(adapter->rx_ps_bsize0 + NET_IP_ALIGN); | |
4044 | ||
b92ff8ee JB |
4045 | if (unlikely(!skb)) { |
4046 | adapter->alloc_rx_buff_failed++; | |
2d7edb92 | 4047 | break; |
b92ff8ee | 4048 | } |
2d7edb92 MC |
4049 | |
4050 | /* Make buffer alignment 2 beyond a 16 byte boundary | |
4051 | * this will result in a 16 byte aligned IP header after | |
4052 | * the 14 byte MAC header is removed | |
4053 | */ | |
4054 | skb_reserve(skb, NET_IP_ALIGN); | |
4055 | ||
4056 | skb->dev = netdev; | |
4057 | ||
4058 | buffer_info->skb = skb; | |
4059 | buffer_info->length = adapter->rx_ps_bsize0; | |
4060 | buffer_info->dma = pci_map_single(pdev, skb->data, | |
4061 | adapter->rx_ps_bsize0, | |
4062 | PCI_DMA_FROMDEVICE); | |
4063 | ||
4064 | rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); | |
4065 | ||
96838a40 | 4066 | if (unlikely(++i == rx_ring->count)) i = 0; |
2d7edb92 MC |
4067 | buffer_info = &rx_ring->buffer_info[i]; |
4068 | ps_page = &rx_ring->ps_page[i]; | |
4069 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
4070 | } | |
4071 | ||
4072 | no_buffers: | |
b92ff8ee JB |
4073 | if (likely(rx_ring->next_to_use != i)) { |
4074 | rx_ring->next_to_use = i; | |
4075 | if (unlikely(i-- == 0)) i = (rx_ring->count - 1); | |
4076 | ||
4077 | /* Force memory writes to complete before letting h/w | |
4078 | * know there are new descriptors to fetch. (Only | |
4079 | * applicable for weak-ordered memory model archs, | |
4080 | * such as IA-64). */ | |
4081 | wmb(); | |
4082 | /* Hardware increments by 16 bytes, but packet split | |
4083 | * descriptors are 32 bytes...so we increment tail | |
4084 | * twice as much. | |
4085 | */ | |
4086 | writel(i<<1, adapter->hw.hw_addr + rx_ring->rdt); | |
4087 | } | |
2d7edb92 MC |
4088 | } |
4089 | ||
1da177e4 LT |
4090 | /** |
4091 | * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. | |
4092 | * @adapter: | |
4093 | **/ | |
4094 | ||
4095 | static void | |
4096 | e1000_smartspeed(struct e1000_adapter *adapter) | |
4097 | { | |
4098 | uint16_t phy_status; | |
4099 | uint16_t phy_ctrl; | |
4100 | ||
96838a40 | 4101 | if ((adapter->hw.phy_type != e1000_phy_igp) || !adapter->hw.autoneg || |
1da177e4 LT |
4102 | !(adapter->hw.autoneg_advertised & ADVERTISE_1000_FULL)) |
4103 | return; | |
4104 | ||
96838a40 | 4105 | if (adapter->smartspeed == 0) { |
1da177e4 LT |
4106 | /* If Master/Slave config fault is asserted twice, |
4107 | * we assume back-to-back */ | |
4108 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); | |
96838a40 | 4109 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1da177e4 | 4110 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); |
96838a40 | 4111 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1da177e4 | 4112 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); |
96838a40 | 4113 | if (phy_ctrl & CR_1000T_MS_ENABLE) { |
1da177e4 LT |
4114 | phy_ctrl &= ~CR_1000T_MS_ENABLE; |
4115 | e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, | |
4116 | phy_ctrl); | |
4117 | adapter->smartspeed++; | |
96838a40 | 4118 | if (!e1000_phy_setup_autoneg(&adapter->hw) && |
1da177e4 LT |
4119 | !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, |
4120 | &phy_ctrl)) { | |
4121 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
4122 | MII_CR_RESTART_AUTO_NEG); | |
4123 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, | |
4124 | phy_ctrl); | |
4125 | } | |
4126 | } | |
4127 | return; | |
96838a40 | 4128 | } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { |
1da177e4 LT |
4129 | /* If still no link, perhaps using 2/3 pair cable */ |
4130 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); | |
4131 | phy_ctrl |= CR_1000T_MS_ENABLE; | |
4132 | e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_ctrl); | |
96838a40 | 4133 | if (!e1000_phy_setup_autoneg(&adapter->hw) && |
1da177e4 LT |
4134 | !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_ctrl)) { |
4135 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
4136 | MII_CR_RESTART_AUTO_NEG); | |
4137 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, phy_ctrl); | |
4138 | } | |
4139 | } | |
4140 | /* Restart process after E1000_SMARTSPEED_MAX iterations */ | |
96838a40 | 4141 | if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX) |
1da177e4 LT |
4142 | adapter->smartspeed = 0; |
4143 | } | |
4144 | ||
4145 | /** | |
4146 | * e1000_ioctl - | |
4147 | * @netdev: | |
4148 | * @ifreq: | |
4149 | * @cmd: | |
4150 | **/ | |
4151 | ||
4152 | static int | |
4153 | e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
4154 | { | |
4155 | switch (cmd) { | |
4156 | case SIOCGMIIPHY: | |
4157 | case SIOCGMIIREG: | |
4158 | case SIOCSMIIREG: | |
4159 | return e1000_mii_ioctl(netdev, ifr, cmd); | |
4160 | default: | |
4161 | return -EOPNOTSUPP; | |
4162 | } | |
4163 | } | |
4164 | ||
4165 | /** | |
4166 | * e1000_mii_ioctl - | |
4167 | * @netdev: | |
4168 | * @ifreq: | |
4169 | * @cmd: | |
4170 | **/ | |
4171 | ||
4172 | static int | |
4173 | e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
4174 | { | |
60490fe0 | 4175 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
4176 | struct mii_ioctl_data *data = if_mii(ifr); |
4177 | int retval; | |
4178 | uint16_t mii_reg; | |
4179 | uint16_t spddplx; | |
97876fc6 | 4180 | unsigned long flags; |
1da177e4 | 4181 | |
96838a40 | 4182 | if (adapter->hw.media_type != e1000_media_type_copper) |
1da177e4 LT |
4183 | return -EOPNOTSUPP; |
4184 | ||
4185 | switch (cmd) { | |
4186 | case SIOCGMIIPHY: | |
4187 | data->phy_id = adapter->hw.phy_addr; | |
4188 | break; | |
4189 | case SIOCGMIIREG: | |
96838a40 | 4190 | if (!capable(CAP_NET_ADMIN)) |
1da177e4 | 4191 | return -EPERM; |
97876fc6 | 4192 | spin_lock_irqsave(&adapter->stats_lock, flags); |
96838a40 | 4193 | if (e1000_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
97876fc6 MC |
4194 | &data->val_out)) { |
4195 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4196 | return -EIO; |
97876fc6 MC |
4197 | } |
4198 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 LT |
4199 | break; |
4200 | case SIOCSMIIREG: | |
96838a40 | 4201 | if (!capable(CAP_NET_ADMIN)) |
1da177e4 | 4202 | return -EPERM; |
96838a40 | 4203 | if (data->reg_num & ~(0x1F)) |
1da177e4 LT |
4204 | return -EFAULT; |
4205 | mii_reg = data->val_in; | |
97876fc6 | 4206 | spin_lock_irqsave(&adapter->stats_lock, flags); |
96838a40 | 4207 | if (e1000_write_phy_reg(&adapter->hw, data->reg_num, |
97876fc6 MC |
4208 | mii_reg)) { |
4209 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4210 | return -EIO; |
97876fc6 | 4211 | } |
dc86d32a | 4212 | if (adapter->hw.media_type == e1000_media_type_copper) { |
1da177e4 LT |
4213 | switch (data->reg_num) { |
4214 | case PHY_CTRL: | |
96838a40 | 4215 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4216 | break; |
96838a40 | 4217 | if (mii_reg & MII_CR_AUTO_NEG_EN) { |
1da177e4 LT |
4218 | adapter->hw.autoneg = 1; |
4219 | adapter->hw.autoneg_advertised = 0x2F; | |
4220 | } else { | |
4221 | if (mii_reg & 0x40) | |
4222 | spddplx = SPEED_1000; | |
4223 | else if (mii_reg & 0x2000) | |
4224 | spddplx = SPEED_100; | |
4225 | else | |
4226 | spddplx = SPEED_10; | |
4227 | spddplx += (mii_reg & 0x100) | |
cb764326 JK |
4228 | ? DUPLEX_FULL : |
4229 | DUPLEX_HALF; | |
1da177e4 LT |
4230 | retval = e1000_set_spd_dplx(adapter, |
4231 | spddplx); | |
96838a40 | 4232 | if (retval) { |
97876fc6 | 4233 | spin_unlock_irqrestore( |
96838a40 | 4234 | &adapter->stats_lock, |
97876fc6 | 4235 | flags); |
1da177e4 | 4236 | return retval; |
97876fc6 | 4237 | } |
1da177e4 | 4238 | } |
2db10a08 AK |
4239 | if (netif_running(adapter->netdev)) |
4240 | e1000_reinit_locked(adapter); | |
4241 | else | |
1da177e4 LT |
4242 | e1000_reset(adapter); |
4243 | break; | |
4244 | case M88E1000_PHY_SPEC_CTRL: | |
4245 | case M88E1000_EXT_PHY_SPEC_CTRL: | |
96838a40 | 4246 | if (e1000_phy_reset(&adapter->hw)) { |
97876fc6 MC |
4247 | spin_unlock_irqrestore( |
4248 | &adapter->stats_lock, flags); | |
1da177e4 | 4249 | return -EIO; |
97876fc6 | 4250 | } |
1da177e4 LT |
4251 | break; |
4252 | } | |
4253 | } else { | |
4254 | switch (data->reg_num) { | |
4255 | case PHY_CTRL: | |
96838a40 | 4256 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4257 | break; |
2db10a08 AK |
4258 | if (netif_running(adapter->netdev)) |
4259 | e1000_reinit_locked(adapter); | |
4260 | else | |
1da177e4 LT |
4261 | e1000_reset(adapter); |
4262 | break; | |
4263 | } | |
4264 | } | |
97876fc6 | 4265 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
1da177e4 LT |
4266 | break; |
4267 | default: | |
4268 | return -EOPNOTSUPP; | |
4269 | } | |
4270 | return E1000_SUCCESS; | |
4271 | } | |
4272 | ||
4273 | void | |
4274 | e1000_pci_set_mwi(struct e1000_hw *hw) | |
4275 | { | |
4276 | struct e1000_adapter *adapter = hw->back; | |
2648345f | 4277 | int ret_val = pci_set_mwi(adapter->pdev); |
1da177e4 | 4278 | |
96838a40 | 4279 | if (ret_val) |
2648345f | 4280 | DPRINTK(PROBE, ERR, "Error in setting MWI\n"); |
1da177e4 LT |
4281 | } |
4282 | ||
4283 | void | |
4284 | e1000_pci_clear_mwi(struct e1000_hw *hw) | |
4285 | { | |
4286 | struct e1000_adapter *adapter = hw->back; | |
4287 | ||
4288 | pci_clear_mwi(adapter->pdev); | |
4289 | } | |
4290 | ||
4291 | void | |
4292 | e1000_read_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) | |
4293 | { | |
4294 | struct e1000_adapter *adapter = hw->back; | |
4295 | ||
4296 | pci_read_config_word(adapter->pdev, reg, value); | |
4297 | } | |
4298 | ||
4299 | void | |
4300 | e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) | |
4301 | { | |
4302 | struct e1000_adapter *adapter = hw->back; | |
4303 | ||
4304 | pci_write_config_word(adapter->pdev, reg, *value); | |
4305 | } | |
4306 | ||
4307 | uint32_t | |
4308 | e1000_io_read(struct e1000_hw *hw, unsigned long port) | |
4309 | { | |
4310 | return inl(port); | |
4311 | } | |
4312 | ||
4313 | void | |
4314 | e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value) | |
4315 | { | |
4316 | outl(value, port); | |
4317 | } | |
4318 | ||
4319 | static void | |
4320 | e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) | |
4321 | { | |
60490fe0 | 4322 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
4323 | uint32_t ctrl, rctl; |
4324 | ||
4325 | e1000_irq_disable(adapter); | |
4326 | adapter->vlgrp = grp; | |
4327 | ||
96838a40 | 4328 | if (grp) { |
1da177e4 LT |
4329 | /* enable VLAN tag insert/strip */ |
4330 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
4331 | ctrl |= E1000_CTRL_VME; | |
4332 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
4333 | ||
4334 | /* enable VLAN receive filtering */ | |
4335 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
4336 | rctl |= E1000_RCTL_VFE; | |
4337 | rctl &= ~E1000_RCTL_CFIEN; | |
4338 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2d7edb92 | 4339 | e1000_update_mng_vlan(adapter); |
1da177e4 LT |
4340 | } else { |
4341 | /* disable VLAN tag insert/strip */ | |
4342 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
4343 | ctrl &= ~E1000_CTRL_VME; | |
4344 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
4345 | ||
4346 | /* disable VLAN filtering */ | |
4347 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
4348 | rctl &= ~E1000_RCTL_VFE; | |
4349 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
96838a40 | 4350 | if (adapter->mng_vlan_id != (uint16_t)E1000_MNG_VLAN_NONE) { |
2d7edb92 MC |
4351 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
4352 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
4353 | } | |
1da177e4 LT |
4354 | } |
4355 | ||
4356 | e1000_irq_enable(adapter); | |
4357 | } | |
4358 | ||
4359 | static void | |
4360 | e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid) | |
4361 | { | |
60490fe0 | 4362 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 4363 | uint32_t vfta, index; |
96838a40 JB |
4364 | |
4365 | if ((adapter->hw.mng_cookie.status & | |
4366 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && | |
4367 | (vid == adapter->mng_vlan_id)) | |
2d7edb92 | 4368 | return; |
1da177e4 LT |
4369 | /* add VID to filter table */ |
4370 | index = (vid >> 5) & 0x7F; | |
4371 | vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
4372 | vfta |= (1 << (vid & 0x1F)); | |
4373 | e1000_write_vfta(&adapter->hw, index, vfta); | |
4374 | } | |
4375 | ||
4376 | static void | |
4377 | e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid) | |
4378 | { | |
60490fe0 | 4379 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
4380 | uint32_t vfta, index; |
4381 | ||
4382 | e1000_irq_disable(adapter); | |
4383 | ||
96838a40 | 4384 | if (adapter->vlgrp) |
1da177e4 LT |
4385 | adapter->vlgrp->vlan_devices[vid] = NULL; |
4386 | ||
4387 | e1000_irq_enable(adapter); | |
4388 | ||
96838a40 JB |
4389 | if ((adapter->hw.mng_cookie.status & |
4390 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && | |
ff147013 JK |
4391 | (vid == adapter->mng_vlan_id)) { |
4392 | /* release control to f/w */ | |
4393 | e1000_release_hw_control(adapter); | |
2d7edb92 | 4394 | return; |
ff147013 JK |
4395 | } |
4396 | ||
1da177e4 LT |
4397 | /* remove VID from filter table */ |
4398 | index = (vid >> 5) & 0x7F; | |
4399 | vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
4400 | vfta &= ~(1 << (vid & 0x1F)); | |
4401 | e1000_write_vfta(&adapter->hw, index, vfta); | |
4402 | } | |
4403 | ||
4404 | static void | |
4405 | e1000_restore_vlan(struct e1000_adapter *adapter) | |
4406 | { | |
4407 | e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
4408 | ||
96838a40 | 4409 | if (adapter->vlgrp) { |
1da177e4 | 4410 | uint16_t vid; |
96838a40 JB |
4411 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { |
4412 | if (!adapter->vlgrp->vlan_devices[vid]) | |
1da177e4 LT |
4413 | continue; |
4414 | e1000_vlan_rx_add_vid(adapter->netdev, vid); | |
4415 | } | |
4416 | } | |
4417 | } | |
4418 | ||
4419 | int | |
4420 | e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx) | |
4421 | { | |
4422 | adapter->hw.autoneg = 0; | |
4423 | ||
6921368f | 4424 | /* Fiber NICs only allow 1000 gbps Full duplex */ |
96838a40 | 4425 | if ((adapter->hw.media_type == e1000_media_type_fiber) && |
6921368f MC |
4426 | spddplx != (SPEED_1000 + DUPLEX_FULL)) { |
4427 | DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); | |
4428 | return -EINVAL; | |
4429 | } | |
4430 | ||
96838a40 | 4431 | switch (spddplx) { |
1da177e4 LT |
4432 | case SPEED_10 + DUPLEX_HALF: |
4433 | adapter->hw.forced_speed_duplex = e1000_10_half; | |
4434 | break; | |
4435 | case SPEED_10 + DUPLEX_FULL: | |
4436 | adapter->hw.forced_speed_duplex = e1000_10_full; | |
4437 | break; | |
4438 | case SPEED_100 + DUPLEX_HALF: | |
4439 | adapter->hw.forced_speed_duplex = e1000_100_half; | |
4440 | break; | |
4441 | case SPEED_100 + DUPLEX_FULL: | |
4442 | adapter->hw.forced_speed_duplex = e1000_100_full; | |
4443 | break; | |
4444 | case SPEED_1000 + DUPLEX_FULL: | |
4445 | adapter->hw.autoneg = 1; | |
4446 | adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL; | |
4447 | break; | |
4448 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ | |
4449 | default: | |
2648345f | 4450 | DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); |
1da177e4 LT |
4451 | return -EINVAL; |
4452 | } | |
4453 | return 0; | |
4454 | } | |
4455 | ||
b6a1d5f8 | 4456 | #ifdef CONFIG_PM |
0f15a8fa JK |
4457 | /* Save/restore 16 or 64 dwords of PCI config space depending on which |
4458 | * bus we're on (PCI(X) vs. PCI-E) | |
2f82665f JB |
4459 | */ |
4460 | #define PCIE_CONFIG_SPACE_LEN 256 | |
4461 | #define PCI_CONFIG_SPACE_LEN 64 | |
4462 | static int | |
4463 | e1000_pci_save_state(struct e1000_adapter *adapter) | |
4464 | { | |
4465 | struct pci_dev *dev = adapter->pdev; | |
4466 | int size; | |
4467 | int i; | |
0f15a8fa | 4468 | |
2f82665f JB |
4469 | if (adapter->hw.mac_type >= e1000_82571) |
4470 | size = PCIE_CONFIG_SPACE_LEN; | |
4471 | else | |
4472 | size = PCI_CONFIG_SPACE_LEN; | |
4473 | ||
4474 | WARN_ON(adapter->config_space != NULL); | |
4475 | ||
4476 | adapter->config_space = kmalloc(size, GFP_KERNEL); | |
4477 | if (!adapter->config_space) { | |
4478 | DPRINTK(PROBE, ERR, "unable to allocate %d bytes\n", size); | |
4479 | return -ENOMEM; | |
4480 | } | |
4481 | for (i = 0; i < (size / 4); i++) | |
4482 | pci_read_config_dword(dev, i * 4, &adapter->config_space[i]); | |
4483 | return 0; | |
4484 | } | |
4485 | ||
4486 | static void | |
4487 | e1000_pci_restore_state(struct e1000_adapter *adapter) | |
4488 | { | |
4489 | struct pci_dev *dev = adapter->pdev; | |
4490 | int size; | |
4491 | int i; | |
0f15a8fa | 4492 | |
2f82665f JB |
4493 | if (adapter->config_space == NULL) |
4494 | return; | |
0f15a8fa | 4495 | |
2f82665f JB |
4496 | if (adapter->hw.mac_type >= e1000_82571) |
4497 | size = PCIE_CONFIG_SPACE_LEN; | |
4498 | else | |
4499 | size = PCI_CONFIG_SPACE_LEN; | |
4500 | for (i = 0; i < (size / 4); i++) | |
4501 | pci_write_config_dword(dev, i * 4, adapter->config_space[i]); | |
4502 | kfree(adapter->config_space); | |
4503 | adapter->config_space = NULL; | |
4504 | return; | |
4505 | } | |
4506 | #endif /* CONFIG_PM */ | |
4507 | ||
1da177e4 | 4508 | static int |
829ca9a3 | 4509 | e1000_suspend(struct pci_dev *pdev, pm_message_t state) |
1da177e4 LT |
4510 | { |
4511 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 4512 | struct e1000_adapter *adapter = netdev_priv(netdev); |
b55ccb35 | 4513 | uint32_t ctrl, ctrl_ext, rctl, manc, status; |
1da177e4 | 4514 | uint32_t wufc = adapter->wol; |
6fdfef16 | 4515 | #ifdef CONFIG_PM |
240b1710 | 4516 | int retval = 0; |
6fdfef16 | 4517 | #endif |
1da177e4 LT |
4518 | |
4519 | netif_device_detach(netdev); | |
4520 | ||
2db10a08 AK |
4521 | if (netif_running(netdev)) { |
4522 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); | |
1da177e4 | 4523 | e1000_down(adapter); |
2db10a08 | 4524 | } |
1da177e4 | 4525 | |
2f82665f | 4526 | #ifdef CONFIG_PM |
0f15a8fa JK |
4527 | /* Implement our own version of pci_save_state(pdev) because pci- |
4528 | * express adapters have 256-byte config spaces. */ | |
2f82665f JB |
4529 | retval = e1000_pci_save_state(adapter); |
4530 | if (retval) | |
4531 | return retval; | |
4532 | #endif | |
4533 | ||
1da177e4 | 4534 | status = E1000_READ_REG(&adapter->hw, STATUS); |
96838a40 | 4535 | if (status & E1000_STATUS_LU) |
1da177e4 LT |
4536 | wufc &= ~E1000_WUFC_LNKC; |
4537 | ||
96838a40 | 4538 | if (wufc) { |
1da177e4 LT |
4539 | e1000_setup_rctl(adapter); |
4540 | e1000_set_multi(netdev); | |
4541 | ||
4542 | /* turn on all-multi mode if wake on multicast is enabled */ | |
96838a40 | 4543 | if (adapter->wol & E1000_WUFC_MC) { |
1da177e4 LT |
4544 | rctl = E1000_READ_REG(&adapter->hw, RCTL); |
4545 | rctl |= E1000_RCTL_MPE; | |
4546 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
4547 | } | |
4548 | ||
96838a40 | 4549 | if (adapter->hw.mac_type >= e1000_82540) { |
1da177e4 LT |
4550 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); |
4551 | /* advertise wake from D3Cold */ | |
4552 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
4553 | /* phy power management enable */ | |
4554 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
4555 | ctrl |= E1000_CTRL_ADVD3WUC | | |
4556 | E1000_CTRL_EN_PHY_PWR_MGMT; | |
4557 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
4558 | } | |
4559 | ||
96838a40 | 4560 | if (adapter->hw.media_type == e1000_media_type_fiber || |
1da177e4 LT |
4561 | adapter->hw.media_type == e1000_media_type_internal_serdes) { |
4562 | /* keep the laser running in D3 */ | |
4563 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); | |
4564 | ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; | |
4565 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, ctrl_ext); | |
4566 | } | |
4567 | ||
2d7edb92 MC |
4568 | /* Allow time for pending master requests to run */ |
4569 | e1000_disable_pciex_master(&adapter->hw); | |
4570 | ||
1da177e4 LT |
4571 | E1000_WRITE_REG(&adapter->hw, WUC, E1000_WUC_PME_EN); |
4572 | E1000_WRITE_REG(&adapter->hw, WUFC, wufc); | |
d0e027db AK |
4573 | pci_enable_wake(pdev, PCI_D3hot, 1); |
4574 | pci_enable_wake(pdev, PCI_D3cold, 1); | |
1da177e4 LT |
4575 | } else { |
4576 | E1000_WRITE_REG(&adapter->hw, WUC, 0); | |
4577 | E1000_WRITE_REG(&adapter->hw, WUFC, 0); | |
d0e027db AK |
4578 | pci_enable_wake(pdev, PCI_D3hot, 0); |
4579 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
1da177e4 LT |
4580 | } |
4581 | ||
96838a40 | 4582 | if (adapter->hw.mac_type >= e1000_82540 && |
1da177e4 LT |
4583 | adapter->hw.media_type == e1000_media_type_copper) { |
4584 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
96838a40 | 4585 | if (manc & E1000_MANC_SMBUS_EN) { |
1da177e4 LT |
4586 | manc |= E1000_MANC_ARP_EN; |
4587 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
d0e027db AK |
4588 | pci_enable_wake(pdev, PCI_D3hot, 1); |
4589 | pci_enable_wake(pdev, PCI_D3cold, 1); | |
1da177e4 LT |
4590 | } |
4591 | } | |
4592 | ||
b55ccb35 JK |
4593 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
4594 | * would have already happened in close and is redundant. */ | |
4595 | e1000_release_hw_control(adapter); | |
2d7edb92 | 4596 | |
1da177e4 | 4597 | pci_disable_device(pdev); |
240b1710 | 4598 | |
d0e027db | 4599 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); |
1da177e4 LT |
4600 | |
4601 | return 0; | |
4602 | } | |
4603 | ||
2f82665f | 4604 | #ifdef CONFIG_PM |
1da177e4 LT |
4605 | static int |
4606 | e1000_resume(struct pci_dev *pdev) | |
4607 | { | |
4608 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 4609 | struct e1000_adapter *adapter = netdev_priv(netdev); |
b55ccb35 | 4610 | uint32_t manc, ret_val; |
1da177e4 | 4611 | |
d0e027db | 4612 | pci_set_power_state(pdev, PCI_D0); |
2f82665f | 4613 | e1000_pci_restore_state(adapter); |
2b02893e | 4614 | ret_val = pci_enable_device(pdev); |
a4cb847d | 4615 | pci_set_master(pdev); |
1da177e4 | 4616 | |
d0e027db AK |
4617 | pci_enable_wake(pdev, PCI_D3hot, 0); |
4618 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
1da177e4 LT |
4619 | |
4620 | e1000_reset(adapter); | |
4621 | E1000_WRITE_REG(&adapter->hw, WUS, ~0); | |
4622 | ||
96838a40 | 4623 | if (netif_running(netdev)) |
1da177e4 LT |
4624 | e1000_up(adapter); |
4625 | ||
4626 | netif_device_attach(netdev); | |
4627 | ||
96838a40 | 4628 | if (adapter->hw.mac_type >= e1000_82540 && |
1da177e4 LT |
4629 | adapter->hw.media_type == e1000_media_type_copper) { |
4630 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
4631 | manc &= ~(E1000_MANC_ARP_EN); | |
4632 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
4633 | } | |
4634 | ||
b55ccb35 JK |
4635 | /* If the controller is 82573 and f/w is AMT, do not set |
4636 | * DRV_LOAD until the interface is up. For all other cases, | |
4637 | * let the f/w know that the h/w is now under the control | |
4638 | * of the driver. */ | |
4639 | if (adapter->hw.mac_type != e1000_82573 || | |
4640 | !e1000_check_mng_mode(&adapter->hw)) | |
4641 | e1000_get_hw_control(adapter); | |
2d7edb92 | 4642 | |
1da177e4 LT |
4643 | return 0; |
4644 | } | |
4645 | #endif | |
c653e635 AK |
4646 | |
4647 | static void e1000_shutdown(struct pci_dev *pdev) | |
4648 | { | |
4649 | e1000_suspend(pdev, PMSG_SUSPEND); | |
4650 | } | |
4651 | ||
1da177e4 LT |
4652 | #ifdef CONFIG_NET_POLL_CONTROLLER |
4653 | /* | |
4654 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
4655 | * without having to re-enable interrupts. It's not called while | |
4656 | * the interrupt routine is executing. | |
4657 | */ | |
4658 | static void | |
2648345f | 4659 | e1000_netpoll(struct net_device *netdev) |
1da177e4 | 4660 | { |
60490fe0 | 4661 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
4662 | disable_irq(adapter->pdev->irq); |
4663 | e1000_intr(adapter->pdev->irq, netdev, NULL); | |
c4cfe567 | 4664 | e1000_clean_tx_irq(adapter, adapter->tx_ring); |
e8da8be1 JK |
4665 | #ifndef CONFIG_E1000_NAPI |
4666 | adapter->clean_rx(adapter, adapter->rx_ring); | |
4667 | #endif | |
1da177e4 LT |
4668 | enable_irq(adapter->pdev->irq); |
4669 | } | |
4670 | #endif | |
4671 | ||
9026729b AK |
4672 | /** |
4673 | * e1000_io_error_detected - called when PCI error is detected | |
4674 | * @pdev: Pointer to PCI device | |
4675 | * @state: The current pci conneection state | |
4676 | * | |
4677 | * This function is called after a PCI bus error affecting | |
4678 | * this device has been detected. | |
4679 | */ | |
4680 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state) | |
4681 | { | |
4682 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4683 | struct e1000_adapter *adapter = netdev->priv; | |
4684 | ||
4685 | netif_device_detach(netdev); | |
4686 | ||
4687 | if (netif_running(netdev)) | |
4688 | e1000_down(adapter); | |
4689 | ||
4690 | /* Request a slot slot reset. */ | |
4691 | return PCI_ERS_RESULT_NEED_RESET; | |
4692 | } | |
4693 | ||
4694 | /** | |
4695 | * e1000_io_slot_reset - called after the pci bus has been reset. | |
4696 | * @pdev: Pointer to PCI device | |
4697 | * | |
4698 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
4699 | * resembles the first-half of the e1000_resume routine. | |
4700 | */ | |
4701 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) | |
4702 | { | |
4703 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4704 | struct e1000_adapter *adapter = netdev->priv; | |
4705 | ||
4706 | if (pci_enable_device(pdev)) { | |
4707 | printk(KERN_ERR "e1000: Cannot re-enable PCI device after reset.\n"); | |
4708 | return PCI_ERS_RESULT_DISCONNECT; | |
4709 | } | |
4710 | pci_set_master(pdev); | |
4711 | ||
4712 | pci_enable_wake(pdev, 3, 0); | |
4713 | pci_enable_wake(pdev, 4, 0); /* 4 == D3 cold */ | |
4714 | ||
4715 | /* Perform card reset only on one instance of the card */ | |
4716 | if (PCI_FUNC (pdev->devfn) != 0) | |
4717 | return PCI_ERS_RESULT_RECOVERED; | |
4718 | ||
4719 | e1000_reset(adapter); | |
4720 | E1000_WRITE_REG(&adapter->hw, WUS, ~0); | |
4721 | ||
4722 | return PCI_ERS_RESULT_RECOVERED; | |
4723 | } | |
4724 | ||
4725 | /** | |
4726 | * e1000_io_resume - called when traffic can start flowing again. | |
4727 | * @pdev: Pointer to PCI device | |
4728 | * | |
4729 | * This callback is called when the error recovery driver tells us that | |
4730 | * its OK to resume normal operation. Implementation resembles the | |
4731 | * second-half of the e1000_resume routine. | |
4732 | */ | |
4733 | static void e1000_io_resume(struct pci_dev *pdev) | |
4734 | { | |
4735 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4736 | struct e1000_adapter *adapter = netdev->priv; | |
4737 | uint32_t manc, swsm; | |
4738 | ||
4739 | if (netif_running(netdev)) { | |
4740 | if (e1000_up(adapter)) { | |
4741 | printk("e1000: can't bring device back up after reset\n"); | |
4742 | return; | |
4743 | } | |
4744 | } | |
4745 | ||
4746 | netif_device_attach(netdev); | |
4747 | ||
4748 | if (adapter->hw.mac_type >= e1000_82540 && | |
4749 | adapter->hw.media_type == e1000_media_type_copper) { | |
4750 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
4751 | manc &= ~(E1000_MANC_ARP_EN); | |
4752 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
4753 | } | |
4754 | ||
4755 | switch (adapter->hw.mac_type) { | |
4756 | case e1000_82573: | |
4757 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
4758 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
4759 | swsm | E1000_SWSM_DRV_LOAD); | |
4760 | break; | |
4761 | default: | |
4762 | break; | |
4763 | } | |
4764 | ||
4765 | if (netif_running(netdev)) | |
4766 | mod_timer(&adapter->watchdog_timer, jiffies); | |
4767 | } | |
4768 | ||
1da177e4 | 4769 | /* e1000_main.c */ |