]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /******************************************************************************* |
2 | ||
0abb6eb1 AK |
3 | Intel PRO/1000 Linux driver |
4 | Copyright(c) 1999 - 2006 Intel Corporation. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify it | |
7 | under the terms and conditions of the GNU General Public License, | |
8 | version 2, as published by the Free Software Foundation. | |
9 | ||
10 | This program is distributed in the hope it will be useful, but WITHOUT | |
11 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
1da177e4 | 13 | more details. |
0abb6eb1 | 14 | |
1da177e4 | 15 | You should have received a copy of the GNU General Public License along with |
0abb6eb1 AK |
16 | this program; if not, write to the Free Software Foundation, Inc., |
17 | 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | ||
19 | The full GNU General Public License is included in this distribution in | |
20 | the file called "COPYING". | |
21 | ||
1da177e4 LT |
22 | Contact Information: |
23 | Linux NICS <[email protected]> | |
3d41e30a | 24 | e1000-devel Mailing List <[email protected]> |
1da177e4 LT |
25 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
26 | ||
27 | *******************************************************************************/ | |
28 | ||
29 | #include "e1000.h" | |
d0bb53e1 | 30 | #include <net/ip6_checksum.h> |
1da177e4 | 31 | |
1da177e4 | 32 | char e1000_driver_name[] = "e1000"; |
3ad2cc67 | 33 | static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver"; |
1da177e4 LT |
34 | #ifndef CONFIG_E1000_NAPI |
35 | #define DRIVERNAPI | |
36 | #else | |
37 | #define DRIVERNAPI "-NAPI" | |
38 | #endif | |
7e721579 | 39 | #define DRV_VERSION "7.3.20-k2"DRIVERNAPI |
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), | |
ae2c3860 AK |
76 | INTEL_E1000_ETHERNET_DEVICE(0x1049), |
77 | INTEL_E1000_ETHERNET_DEVICE(0x104A), | |
78 | INTEL_E1000_ETHERNET_DEVICE(0x104B), | |
79 | INTEL_E1000_ETHERNET_DEVICE(0x104C), | |
80 | INTEL_E1000_ETHERNET_DEVICE(0x104D), | |
07b8fede MC |
81 | INTEL_E1000_ETHERNET_DEVICE(0x105E), |
82 | INTEL_E1000_ETHERNET_DEVICE(0x105F), | |
83 | INTEL_E1000_ETHERNET_DEVICE(0x1060), | |
1da177e4 LT |
84 | INTEL_E1000_ETHERNET_DEVICE(0x1075), |
85 | INTEL_E1000_ETHERNET_DEVICE(0x1076), | |
86 | INTEL_E1000_ETHERNET_DEVICE(0x1077), | |
87 | INTEL_E1000_ETHERNET_DEVICE(0x1078), | |
88 | INTEL_E1000_ETHERNET_DEVICE(0x1079), | |
89 | INTEL_E1000_ETHERNET_DEVICE(0x107A), | |
90 | INTEL_E1000_ETHERNET_DEVICE(0x107B), | |
91 | INTEL_E1000_ETHERNET_DEVICE(0x107C), | |
07b8fede MC |
92 | INTEL_E1000_ETHERNET_DEVICE(0x107D), |
93 | INTEL_E1000_ETHERNET_DEVICE(0x107E), | |
94 | INTEL_E1000_ETHERNET_DEVICE(0x107F), | |
1da177e4 | 95 | INTEL_E1000_ETHERNET_DEVICE(0x108A), |
2648345f MC |
96 | INTEL_E1000_ETHERNET_DEVICE(0x108B), |
97 | INTEL_E1000_ETHERNET_DEVICE(0x108C), | |
6418ecc6 JK |
98 | INTEL_E1000_ETHERNET_DEVICE(0x1096), |
99 | INTEL_E1000_ETHERNET_DEVICE(0x1098), | |
b7ee49db | 100 | INTEL_E1000_ETHERNET_DEVICE(0x1099), |
07b8fede | 101 | INTEL_E1000_ETHERNET_DEVICE(0x109A), |
5881cde8 | 102 | INTEL_E1000_ETHERNET_DEVICE(0x10A4), |
ce57a02c | 103 | INTEL_E1000_ETHERNET_DEVICE(0x10A5), |
b7ee49db | 104 | INTEL_E1000_ETHERNET_DEVICE(0x10B5), |
6418ecc6 | 105 | INTEL_E1000_ETHERNET_DEVICE(0x10B9), |
ae2c3860 AK |
106 | INTEL_E1000_ETHERNET_DEVICE(0x10BA), |
107 | INTEL_E1000_ETHERNET_DEVICE(0x10BB), | |
fc2307d0 AK |
108 | INTEL_E1000_ETHERNET_DEVICE(0x10BC), |
109 | INTEL_E1000_ETHERNET_DEVICE(0x10C4), | |
110 | INTEL_E1000_ETHERNET_DEVICE(0x10C5), | |
f4ec7f98 | 111 | INTEL_E1000_ETHERNET_DEVICE(0x10D5), |
ce57a02c AK |
112 | INTEL_E1000_ETHERNET_DEVICE(0x10D9), |
113 | INTEL_E1000_ETHERNET_DEVICE(0x10DA), | |
1da177e4 LT |
114 | /* required last entry */ |
115 | {0,} | |
116 | }; | |
117 | ||
118 | MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); | |
119 | ||
35574764 NN |
120 | int e1000_up(struct e1000_adapter *adapter); |
121 | void e1000_down(struct e1000_adapter *adapter); | |
122 | void e1000_reinit_locked(struct e1000_adapter *adapter); | |
123 | void e1000_reset(struct e1000_adapter *adapter); | |
124 | int e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx); | |
125 | int e1000_setup_all_tx_resources(struct e1000_adapter *adapter); | |
126 | int e1000_setup_all_rx_resources(struct e1000_adapter *adapter); | |
127 | void e1000_free_all_tx_resources(struct e1000_adapter *adapter); | |
128 | void e1000_free_all_rx_resources(struct e1000_adapter *adapter); | |
3ad2cc67 | 129 | static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
35574764 | 130 | struct e1000_tx_ring *txdr); |
3ad2cc67 | 131 | static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
35574764 | 132 | struct e1000_rx_ring *rxdr); |
3ad2cc67 | 133 | static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
35574764 | 134 | struct e1000_tx_ring *tx_ring); |
3ad2cc67 | 135 | static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
35574764 NN |
136 | struct e1000_rx_ring *rx_ring); |
137 | void e1000_update_stats(struct e1000_adapter *adapter); | |
1da177e4 LT |
138 | |
139 | static int e1000_init_module(void); | |
140 | static void e1000_exit_module(void); | |
141 | static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent); | |
142 | static void __devexit e1000_remove(struct pci_dev *pdev); | |
581d708e | 143 | static int e1000_alloc_queues(struct e1000_adapter *adapter); |
1da177e4 LT |
144 | static int e1000_sw_init(struct e1000_adapter *adapter); |
145 | static int e1000_open(struct net_device *netdev); | |
146 | static int e1000_close(struct net_device *netdev); | |
147 | static void e1000_configure_tx(struct e1000_adapter *adapter); | |
148 | static void e1000_configure_rx(struct e1000_adapter *adapter); | |
149 | static void e1000_setup_rctl(struct e1000_adapter *adapter); | |
581d708e MC |
150 | static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter); |
151 | static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter); | |
152 | static void e1000_clean_tx_ring(struct e1000_adapter *adapter, | |
153 | struct e1000_tx_ring *tx_ring); | |
154 | static void e1000_clean_rx_ring(struct e1000_adapter *adapter, | |
155 | struct e1000_rx_ring *rx_ring); | |
1da177e4 LT |
156 | static void e1000_set_multi(struct net_device *netdev); |
157 | static void e1000_update_phy_info(unsigned long data); | |
158 | static void e1000_watchdog(unsigned long data); | |
1da177e4 LT |
159 | static void e1000_82547_tx_fifo_stall(unsigned long data); |
160 | static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev); | |
161 | static struct net_device_stats * e1000_get_stats(struct net_device *netdev); | |
162 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu); | |
163 | static int e1000_set_mac(struct net_device *netdev, void *p); | |
7d12e780 | 164 | static irqreturn_t e1000_intr(int irq, void *data); |
9ac98284 | 165 | static irqreturn_t e1000_intr_msi(int irq, void *data); |
581d708e MC |
166 | static boolean_t e1000_clean_tx_irq(struct e1000_adapter *adapter, |
167 | struct e1000_tx_ring *tx_ring); | |
1da177e4 | 168 | #ifdef CONFIG_E1000_NAPI |
bea3348e | 169 | static int e1000_clean(struct napi_struct *napi, int budget); |
1da177e4 | 170 | static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter, |
581d708e | 171 | struct e1000_rx_ring *rx_ring, |
1da177e4 | 172 | int *work_done, int work_to_do); |
2d7edb92 | 173 | static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
581d708e | 174 | struct e1000_rx_ring *rx_ring, |
2d7edb92 | 175 | int *work_done, int work_to_do); |
1da177e4 | 176 | #else |
581d708e MC |
177 | static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter, |
178 | struct e1000_rx_ring *rx_ring); | |
179 | static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, | |
180 | struct e1000_rx_ring *rx_ring); | |
1da177e4 | 181 | #endif |
581d708e | 182 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
72d64a43 JK |
183 | struct e1000_rx_ring *rx_ring, |
184 | int cleaned_count); | |
581d708e | 185 | static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, |
72d64a43 JK |
186 | struct e1000_rx_ring *rx_ring, |
187 | int cleaned_count); | |
1da177e4 LT |
188 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); |
189 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
190 | int cmd); | |
35574764 | 191 | void e1000_set_ethtool_ops(struct net_device *netdev); |
1da177e4 LT |
192 | static void e1000_enter_82542_rst(struct e1000_adapter *adapter); |
193 | static void e1000_leave_82542_rst(struct e1000_adapter *adapter); | |
194 | static void e1000_tx_timeout(struct net_device *dev); | |
65f27f38 | 195 | static void e1000_reset_task(struct work_struct *work); |
1da177e4 | 196 | static void e1000_smartspeed(struct e1000_adapter *adapter); |
e619d523 AK |
197 | static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
198 | struct sk_buff *skb); | |
1da177e4 LT |
199 | |
200 | static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp); | |
201 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid); | |
202 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid); | |
203 | static void e1000_restore_vlan(struct e1000_adapter *adapter); | |
204 | ||
977e74b5 | 205 | static int e1000_suspend(struct pci_dev *pdev, pm_message_t state); |
6fdfef16 | 206 | #ifdef CONFIG_PM |
1da177e4 LT |
207 | static int e1000_resume(struct pci_dev *pdev); |
208 | #endif | |
c653e635 | 209 | static void e1000_shutdown(struct pci_dev *pdev); |
1da177e4 LT |
210 | |
211 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
212 | /* for netdump / net console */ | |
213 | static void e1000_netpoll (struct net_device *netdev); | |
214 | #endif | |
215 | ||
35574764 NN |
216 | extern void e1000_check_options(struct e1000_adapter *adapter); |
217 | ||
1f753861 JB |
218 | #define COPYBREAK_DEFAULT 256 |
219 | static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT; | |
220 | module_param(copybreak, uint, 0644); | |
221 | MODULE_PARM_DESC(copybreak, | |
222 | "Maximum size of packet that is copied to a new buffer on receive"); | |
223 | ||
9026729b AK |
224 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
225 | pci_channel_state_t state); | |
226 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev); | |
227 | static void e1000_io_resume(struct pci_dev *pdev); | |
228 | ||
229 | static struct pci_error_handlers e1000_err_handler = { | |
230 | .error_detected = e1000_io_error_detected, | |
231 | .slot_reset = e1000_io_slot_reset, | |
232 | .resume = e1000_io_resume, | |
233 | }; | |
24025e4e | 234 | |
1da177e4 LT |
235 | static struct pci_driver e1000_driver = { |
236 | .name = e1000_driver_name, | |
237 | .id_table = e1000_pci_tbl, | |
238 | .probe = e1000_probe, | |
239 | .remove = __devexit_p(e1000_remove), | |
c4e24f01 | 240 | #ifdef CONFIG_PM |
1da177e4 | 241 | /* Power Managment Hooks */ |
1da177e4 | 242 | .suspend = e1000_suspend, |
c653e635 | 243 | .resume = e1000_resume, |
1da177e4 | 244 | #endif |
9026729b AK |
245 | .shutdown = e1000_shutdown, |
246 | .err_handler = &e1000_err_handler | |
1da177e4 LT |
247 | }; |
248 | ||
249 | MODULE_AUTHOR("Intel Corporation, <[email protected]>"); | |
250 | MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); | |
251 | MODULE_LICENSE("GPL"); | |
252 | MODULE_VERSION(DRV_VERSION); | |
253 | ||
254 | static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; | |
255 | module_param(debug, int, 0); | |
256 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
257 | ||
258 | /** | |
259 | * e1000_init_module - Driver Registration Routine | |
260 | * | |
261 | * e1000_init_module is the first routine called when the driver is | |
262 | * loaded. All it does is register with the PCI subsystem. | |
263 | **/ | |
264 | ||
265 | static int __init | |
266 | e1000_init_module(void) | |
267 | { | |
268 | int ret; | |
269 | printk(KERN_INFO "%s - version %s\n", | |
270 | e1000_driver_string, e1000_driver_version); | |
271 | ||
272 | printk(KERN_INFO "%s\n", e1000_copyright); | |
273 | ||
29917620 | 274 | ret = pci_register_driver(&e1000_driver); |
1f753861 JB |
275 | if (copybreak != COPYBREAK_DEFAULT) { |
276 | if (copybreak == 0) | |
277 | printk(KERN_INFO "e1000: copybreak disabled\n"); | |
278 | else | |
279 | printk(KERN_INFO "e1000: copybreak enabled for " | |
280 | "packets <= %u bytes\n", copybreak); | |
281 | } | |
1da177e4 LT |
282 | return ret; |
283 | } | |
284 | ||
285 | module_init(e1000_init_module); | |
286 | ||
287 | /** | |
288 | * e1000_exit_module - Driver Exit Cleanup Routine | |
289 | * | |
290 | * e1000_exit_module is called just before the driver is removed | |
291 | * from memory. | |
292 | **/ | |
293 | ||
294 | static void __exit | |
295 | e1000_exit_module(void) | |
296 | { | |
1da177e4 LT |
297 | pci_unregister_driver(&e1000_driver); |
298 | } | |
299 | ||
300 | module_exit(e1000_exit_module); | |
301 | ||
2db10a08 AK |
302 | static int e1000_request_irq(struct e1000_adapter *adapter) |
303 | { | |
304 | struct net_device *netdev = adapter->netdev; | |
e94bd23f AK |
305 | void (*handler) = &e1000_intr; |
306 | int irq_flags = IRQF_SHARED; | |
307 | int err; | |
2db10a08 | 308 | |
9ac98284 | 309 | if (adapter->hw.mac_type >= e1000_82571) { |
e94bd23f AK |
310 | adapter->have_msi = !pci_enable_msi(adapter->pdev); |
311 | if (adapter->have_msi) { | |
312 | handler = &e1000_intr_msi; | |
313 | irq_flags = 0; | |
2db10a08 AK |
314 | } |
315 | } | |
e94bd23f AK |
316 | |
317 | err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name, | |
318 | netdev); | |
319 | if (err) { | |
320 | if (adapter->have_msi) | |
321 | pci_disable_msi(adapter->pdev); | |
2db10a08 AK |
322 | DPRINTK(PROBE, ERR, |
323 | "Unable to allocate interrupt Error: %d\n", err); | |
e94bd23f | 324 | } |
2db10a08 AK |
325 | |
326 | return err; | |
327 | } | |
328 | ||
329 | static void e1000_free_irq(struct e1000_adapter *adapter) | |
330 | { | |
331 | struct net_device *netdev = adapter->netdev; | |
332 | ||
333 | free_irq(adapter->pdev->irq, netdev); | |
334 | ||
2db10a08 AK |
335 | if (adapter->have_msi) |
336 | pci_disable_msi(adapter->pdev); | |
2db10a08 AK |
337 | } |
338 | ||
1da177e4 LT |
339 | /** |
340 | * e1000_irq_disable - Mask off interrupt generation on the NIC | |
341 | * @adapter: board private structure | |
342 | **/ | |
343 | ||
e619d523 | 344 | static void |
1da177e4 LT |
345 | e1000_irq_disable(struct e1000_adapter *adapter) |
346 | { | |
347 | atomic_inc(&adapter->irq_sem); | |
348 | E1000_WRITE_REG(&adapter->hw, IMC, ~0); | |
349 | E1000_WRITE_FLUSH(&adapter->hw); | |
350 | synchronize_irq(adapter->pdev->irq); | |
351 | } | |
352 | ||
353 | /** | |
354 | * e1000_irq_enable - Enable default interrupt generation settings | |
355 | * @adapter: board private structure | |
356 | **/ | |
357 | ||
e619d523 | 358 | static void |
1da177e4 LT |
359 | e1000_irq_enable(struct e1000_adapter *adapter) |
360 | { | |
96838a40 | 361 | if (likely(atomic_dec_and_test(&adapter->irq_sem))) { |
1da177e4 LT |
362 | E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK); |
363 | E1000_WRITE_FLUSH(&adapter->hw); | |
364 | } | |
365 | } | |
3ad2cc67 AB |
366 | |
367 | static void | |
2d7edb92 MC |
368 | e1000_update_mng_vlan(struct e1000_adapter *adapter) |
369 | { | |
370 | struct net_device *netdev = adapter->netdev; | |
371 | uint16_t vid = adapter->hw.mng_cookie.vlan_id; | |
372 | uint16_t old_vid = adapter->mng_vlan_id; | |
96838a40 | 373 | if (adapter->vlgrp) { |
5c15bdec | 374 | if (!vlan_group_get_device(adapter->vlgrp, vid)) { |
96838a40 | 375 | if (adapter->hw.mng_cookie.status & |
2d7edb92 MC |
376 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) { |
377 | e1000_vlan_rx_add_vid(netdev, vid); | |
378 | adapter->mng_vlan_id = vid; | |
379 | } else | |
380 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
96838a40 JB |
381 | |
382 | if ((old_vid != (uint16_t)E1000_MNG_VLAN_NONE) && | |
383 | (vid != old_vid) && | |
5c15bdec | 384 | !vlan_group_get_device(adapter->vlgrp, old_vid)) |
2d7edb92 | 385 | e1000_vlan_rx_kill_vid(netdev, old_vid); |
c5f226fe JK |
386 | } else |
387 | adapter->mng_vlan_id = vid; | |
2d7edb92 MC |
388 | } |
389 | } | |
b55ccb35 JK |
390 | |
391 | /** | |
392 | * e1000_release_hw_control - release control of the h/w to f/w | |
393 | * @adapter: address of board private structure | |
394 | * | |
395 | * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit. | |
396 | * For ASF and Pass Through versions of f/w this means that the | |
397 | * driver is no longer loaded. For AMT version (only with 82573) i | |
90fb5135 | 398 | * of the f/w this means that the network i/f is closed. |
76c224bc | 399 | * |
b55ccb35 JK |
400 | **/ |
401 | ||
e619d523 | 402 | static void |
b55ccb35 JK |
403 | e1000_release_hw_control(struct e1000_adapter *adapter) |
404 | { | |
405 | uint32_t ctrl_ext; | |
406 | uint32_t swsm; | |
407 | ||
408 | /* Let firmware taken over control of h/w */ | |
409 | switch (adapter->hw.mac_type) { | |
b55ccb35 JK |
410 | case e1000_82573: |
411 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
412 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
413 | swsm & ~E1000_SWSM_DRV_LOAD); | |
31d76442 BA |
414 | break; |
415 | case e1000_82571: | |
416 | case e1000_82572: | |
417 | case e1000_80003es2lan: | |
cd94dd0b | 418 | case e1000_ich8lan: |
31d76442 | 419 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); |
cd94dd0b | 420 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, |
31d76442 | 421 | ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); |
cd94dd0b | 422 | break; |
b55ccb35 JK |
423 | default: |
424 | break; | |
425 | } | |
426 | } | |
427 | ||
428 | /** | |
429 | * e1000_get_hw_control - get control of the h/w from f/w | |
430 | * @adapter: address of board private structure | |
431 | * | |
432 | * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit. | |
76c224bc AK |
433 | * For ASF and Pass Through versions of f/w this means that |
434 | * the driver is loaded. For AMT version (only with 82573) | |
90fb5135 | 435 | * of the f/w this means that the network i/f is open. |
76c224bc | 436 | * |
b55ccb35 JK |
437 | **/ |
438 | ||
e619d523 | 439 | static void |
b55ccb35 JK |
440 | e1000_get_hw_control(struct e1000_adapter *adapter) |
441 | { | |
442 | uint32_t ctrl_ext; | |
443 | uint32_t swsm; | |
90fb5135 | 444 | |
b55ccb35 JK |
445 | /* Let firmware know the driver has taken over */ |
446 | switch (adapter->hw.mac_type) { | |
b55ccb35 JK |
447 | case e1000_82573: |
448 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
449 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
450 | swsm | E1000_SWSM_DRV_LOAD); | |
451 | break; | |
31d76442 BA |
452 | case e1000_82571: |
453 | case e1000_82572: | |
454 | case e1000_80003es2lan: | |
cd94dd0b | 455 | case e1000_ich8lan: |
31d76442 BA |
456 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); |
457 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, | |
458 | ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); | |
cd94dd0b | 459 | break; |
b55ccb35 JK |
460 | default: |
461 | break; | |
462 | } | |
463 | } | |
464 | ||
0fccd0e9 JG |
465 | static void |
466 | e1000_init_manageability(struct e1000_adapter *adapter) | |
467 | { | |
468 | if (adapter->en_mng_pt) { | |
469 | uint32_t manc = E1000_READ_REG(&adapter->hw, MANC); | |
470 | ||
471 | /* disable hardware interception of ARP */ | |
472 | manc &= ~(E1000_MANC_ARP_EN); | |
473 | ||
474 | /* enable receiving management packets to the host */ | |
475 | /* this will probably generate destination unreachable messages | |
476 | * from the host OS, but the packets will be handled on SMBUS */ | |
477 | if (adapter->hw.has_manc2h) { | |
478 | uint32_t manc2h = E1000_READ_REG(&adapter->hw, MANC2H); | |
479 | ||
480 | manc |= E1000_MANC_EN_MNG2HOST; | |
481 | #define E1000_MNG2HOST_PORT_623 (1 << 5) | |
482 | #define E1000_MNG2HOST_PORT_664 (1 << 6) | |
483 | manc2h |= E1000_MNG2HOST_PORT_623; | |
484 | manc2h |= E1000_MNG2HOST_PORT_664; | |
485 | E1000_WRITE_REG(&adapter->hw, MANC2H, manc2h); | |
486 | } | |
487 | ||
488 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
489 | } | |
490 | } | |
491 | ||
492 | static void | |
493 | e1000_release_manageability(struct e1000_adapter *adapter) | |
494 | { | |
495 | if (adapter->en_mng_pt) { | |
496 | uint32_t manc = E1000_READ_REG(&adapter->hw, MANC); | |
497 | ||
498 | /* re-enable hardware interception of ARP */ | |
499 | manc |= E1000_MANC_ARP_EN; | |
500 | ||
501 | if (adapter->hw.has_manc2h) | |
502 | manc &= ~E1000_MANC_EN_MNG2HOST; | |
503 | ||
504 | /* don't explicitly have to mess with MANC2H since | |
505 | * MANC has an enable disable that gates MANC2H */ | |
506 | ||
507 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
508 | } | |
509 | } | |
510 | ||
e0aac5a2 AK |
511 | /** |
512 | * e1000_configure - configure the hardware for RX and TX | |
513 | * @adapter = private board structure | |
514 | **/ | |
515 | static void e1000_configure(struct e1000_adapter *adapter) | |
1da177e4 LT |
516 | { |
517 | struct net_device *netdev = adapter->netdev; | |
2db10a08 | 518 | int i; |
1da177e4 | 519 | |
1da177e4 LT |
520 | e1000_set_multi(netdev); |
521 | ||
522 | e1000_restore_vlan(adapter); | |
0fccd0e9 | 523 | e1000_init_manageability(adapter); |
1da177e4 LT |
524 | |
525 | e1000_configure_tx(adapter); | |
526 | e1000_setup_rctl(adapter); | |
527 | e1000_configure_rx(adapter); | |
72d64a43 JK |
528 | /* call E1000_DESC_UNUSED which always leaves |
529 | * at least 1 descriptor unused to make sure | |
530 | * next_to_use != next_to_clean */ | |
f56799ea | 531 | for (i = 0; i < adapter->num_rx_queues; i++) { |
72d64a43 | 532 | struct e1000_rx_ring *ring = &adapter->rx_ring[i]; |
a292ca6e JK |
533 | adapter->alloc_rx_buf(adapter, ring, |
534 | E1000_DESC_UNUSED(ring)); | |
f56799ea | 535 | } |
1da177e4 | 536 | |
7bfa4816 | 537 | adapter->tx_queue_len = netdev->tx_queue_len; |
e0aac5a2 AK |
538 | } |
539 | ||
540 | int e1000_up(struct e1000_adapter *adapter) | |
541 | { | |
542 | /* hardware has been reset, we need to reload some things */ | |
543 | e1000_configure(adapter); | |
544 | ||
545 | clear_bit(__E1000_DOWN, &adapter->flags); | |
7bfa4816 | 546 | |
1da177e4 | 547 | #ifdef CONFIG_E1000_NAPI |
bea3348e | 548 | napi_enable(&adapter->napi); |
1da177e4 | 549 | #endif |
5de55624 MC |
550 | e1000_irq_enable(adapter); |
551 | ||
79f3d399 JB |
552 | /* fire a link change interrupt to start the watchdog */ |
553 | E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_LSC); | |
1da177e4 LT |
554 | return 0; |
555 | } | |
556 | ||
79f05bf0 AK |
557 | /** |
558 | * e1000_power_up_phy - restore link in case the phy was powered down | |
559 | * @adapter: address of board private structure | |
560 | * | |
561 | * The phy may be powered down to save power and turn off link when the | |
562 | * driver is unloaded and wake on lan is not enabled (among others) | |
563 | * *** this routine MUST be followed by a call to e1000_reset *** | |
564 | * | |
565 | **/ | |
566 | ||
d658266e | 567 | void e1000_power_up_phy(struct e1000_adapter *adapter) |
79f05bf0 AK |
568 | { |
569 | uint16_t mii_reg = 0; | |
570 | ||
571 | /* Just clear the power down bit to wake the phy back up */ | |
572 | if (adapter->hw.media_type == e1000_media_type_copper) { | |
573 | /* according to the manual, the phy will retain its | |
574 | * settings across a power-down/up cycle */ | |
575 | e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); | |
576 | mii_reg &= ~MII_CR_POWER_DOWN; | |
577 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg); | |
578 | } | |
579 | } | |
580 | ||
581 | static void e1000_power_down_phy(struct e1000_adapter *adapter) | |
582 | { | |
61c2505f BA |
583 | /* Power down the PHY so no link is implied when interface is down * |
584 | * The PHY cannot be powered down if any of the following is TRUE * | |
79f05bf0 AK |
585 | * (a) WoL is enabled |
586 | * (b) AMT is active | |
587 | * (c) SoL/IDER session is active */ | |
588 | if (!adapter->wol && adapter->hw.mac_type >= e1000_82540 && | |
61c2505f | 589 | adapter->hw.media_type == e1000_media_type_copper) { |
79f05bf0 | 590 | uint16_t mii_reg = 0; |
61c2505f BA |
591 | |
592 | switch (adapter->hw.mac_type) { | |
593 | case e1000_82540: | |
594 | case e1000_82545: | |
595 | case e1000_82545_rev_3: | |
596 | case e1000_82546: | |
597 | case e1000_82546_rev_3: | |
598 | case e1000_82541: | |
599 | case e1000_82541_rev_2: | |
600 | case e1000_82547: | |
601 | case e1000_82547_rev_2: | |
602 | if (E1000_READ_REG(&adapter->hw, MANC) & | |
603 | E1000_MANC_SMBUS_EN) | |
604 | goto out; | |
605 | break; | |
606 | case e1000_82571: | |
607 | case e1000_82572: | |
608 | case e1000_82573: | |
609 | case e1000_80003es2lan: | |
610 | case e1000_ich8lan: | |
611 | if (e1000_check_mng_mode(&adapter->hw) || | |
612 | e1000_check_phy_reset_block(&adapter->hw)) | |
613 | goto out; | |
614 | break; | |
615 | default: | |
616 | goto out; | |
617 | } | |
79f05bf0 AK |
618 | e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); |
619 | mii_reg |= MII_CR_POWER_DOWN; | |
620 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg); | |
621 | mdelay(1); | |
622 | } | |
61c2505f BA |
623 | out: |
624 | return; | |
79f05bf0 AK |
625 | } |
626 | ||
1da177e4 LT |
627 | void |
628 | e1000_down(struct e1000_adapter *adapter) | |
629 | { | |
630 | struct net_device *netdev = adapter->netdev; | |
631 | ||
1314bbf3 AK |
632 | /* signal that we're down so the interrupt handler does not |
633 | * reschedule our watchdog timer */ | |
634 | set_bit(__E1000_DOWN, &adapter->flags); | |
635 | ||
e0aac5a2 | 636 | #ifdef CONFIG_E1000_NAPI |
bea3348e | 637 | napi_disable(&adapter->napi); |
e0aac5a2 | 638 | #endif |
1da177e4 | 639 | e1000_irq_disable(adapter); |
c1605eb3 | 640 | |
1da177e4 LT |
641 | del_timer_sync(&adapter->tx_fifo_stall_timer); |
642 | del_timer_sync(&adapter->watchdog_timer); | |
643 | del_timer_sync(&adapter->phy_info_timer); | |
644 | ||
7bfa4816 | 645 | netdev->tx_queue_len = adapter->tx_queue_len; |
1da177e4 LT |
646 | adapter->link_speed = 0; |
647 | adapter->link_duplex = 0; | |
648 | netif_carrier_off(netdev); | |
649 | netif_stop_queue(netdev); | |
650 | ||
651 | e1000_reset(adapter); | |
581d708e MC |
652 | e1000_clean_all_tx_rings(adapter); |
653 | e1000_clean_all_rx_rings(adapter); | |
1da177e4 | 654 | } |
1da177e4 | 655 | |
2db10a08 AK |
656 | void |
657 | e1000_reinit_locked(struct e1000_adapter *adapter) | |
658 | { | |
659 | WARN_ON(in_interrupt()); | |
660 | while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) | |
661 | msleep(1); | |
662 | e1000_down(adapter); | |
663 | e1000_up(adapter); | |
664 | clear_bit(__E1000_RESETTING, &adapter->flags); | |
1da177e4 LT |
665 | } |
666 | ||
667 | void | |
668 | e1000_reset(struct e1000_adapter *adapter) | |
669 | { | |
018ea44e | 670 | uint32_t pba = 0, tx_space, min_tx_space, min_rx_space; |
1125ecbc | 671 | uint16_t fc_high_water_mark = E1000_FC_HIGH_DIFF; |
018ea44e | 672 | boolean_t legacy_pba_adjust = FALSE; |
1da177e4 LT |
673 | |
674 | /* Repartition Pba for greater than 9k mtu | |
675 | * To take effect CTRL.RST is required. | |
676 | */ | |
677 | ||
2d7edb92 | 678 | switch (adapter->hw.mac_type) { |
018ea44e BA |
679 | case e1000_82542_rev2_0: |
680 | case e1000_82542_rev2_1: | |
681 | case e1000_82543: | |
682 | case e1000_82544: | |
683 | case e1000_82540: | |
684 | case e1000_82541: | |
685 | case e1000_82541_rev_2: | |
686 | legacy_pba_adjust = TRUE; | |
687 | pba = E1000_PBA_48K; | |
688 | break; | |
689 | case e1000_82545: | |
690 | case e1000_82545_rev_3: | |
691 | case e1000_82546: | |
692 | case e1000_82546_rev_3: | |
693 | pba = E1000_PBA_48K; | |
694 | break; | |
2d7edb92 | 695 | case e1000_82547: |
0e6ef3e0 | 696 | case e1000_82547_rev_2: |
018ea44e | 697 | legacy_pba_adjust = TRUE; |
2d7edb92 MC |
698 | pba = E1000_PBA_30K; |
699 | break; | |
868d5309 MC |
700 | case e1000_82571: |
701 | case e1000_82572: | |
6418ecc6 | 702 | case e1000_80003es2lan: |
868d5309 MC |
703 | pba = E1000_PBA_38K; |
704 | break; | |
2d7edb92 | 705 | case e1000_82573: |
018ea44e | 706 | pba = E1000_PBA_20K; |
2d7edb92 | 707 | break; |
cd94dd0b AK |
708 | case e1000_ich8lan: |
709 | pba = E1000_PBA_8K; | |
018ea44e BA |
710 | case e1000_undefined: |
711 | case e1000_num_macs: | |
2d7edb92 MC |
712 | break; |
713 | } | |
714 | ||
018ea44e BA |
715 | if (legacy_pba_adjust == TRUE) { |
716 | if (adapter->netdev->mtu > E1000_RXBUFFER_8192) | |
717 | pba -= 8; /* allocate more FIFO for Tx */ | |
2d7edb92 | 718 | |
018ea44e BA |
719 | if (adapter->hw.mac_type == e1000_82547) { |
720 | adapter->tx_fifo_head = 0; | |
721 | adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; | |
722 | adapter->tx_fifo_size = | |
723 | (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; | |
724 | atomic_set(&adapter->tx_fifo_stall, 0); | |
725 | } | |
726 | } else if (adapter->hw.max_frame_size > MAXIMUM_ETHERNET_FRAME_SIZE) { | |
727 | /* adjust PBA for jumbo frames */ | |
728 | E1000_WRITE_REG(&adapter->hw, PBA, pba); | |
729 | ||
730 | /* To maintain wire speed transmits, the Tx FIFO should be | |
731 | * large enough to accomodate two full transmit packets, | |
732 | * rounded up to the next 1KB and expressed in KB. Likewise, | |
733 | * the Rx FIFO should be large enough to accomodate at least | |
734 | * one full receive packet and is similarly rounded up and | |
735 | * expressed in KB. */ | |
736 | pba = E1000_READ_REG(&adapter->hw, PBA); | |
737 | /* upper 16 bits has Tx packet buffer allocation size in KB */ | |
738 | tx_space = pba >> 16; | |
739 | /* lower 16 bits has Rx packet buffer allocation size in KB */ | |
740 | pba &= 0xffff; | |
741 | /* don't include ethernet FCS because hardware appends/strips */ | |
742 | min_rx_space = adapter->netdev->mtu + ENET_HEADER_SIZE + | |
743 | VLAN_TAG_SIZE; | |
744 | min_tx_space = min_rx_space; | |
745 | min_tx_space *= 2; | |
9099cfb9 | 746 | min_tx_space = ALIGN(min_tx_space, 1024); |
018ea44e | 747 | min_tx_space >>= 10; |
9099cfb9 | 748 | min_rx_space = ALIGN(min_rx_space, 1024); |
018ea44e BA |
749 | min_rx_space >>= 10; |
750 | ||
751 | /* If current Tx allocation is less than the min Tx FIFO size, | |
752 | * and the min Tx FIFO size is less than the current Rx FIFO | |
753 | * allocation, take space away from current Rx allocation */ | |
754 | if (tx_space < min_tx_space && | |
755 | ((min_tx_space - tx_space) < pba)) { | |
756 | pba = pba - (min_tx_space - tx_space); | |
757 | ||
758 | /* PCI/PCIx hardware has PBA alignment constraints */ | |
759 | switch (adapter->hw.mac_type) { | |
760 | case e1000_82545 ... e1000_82546_rev_3: | |
761 | pba &= ~(E1000_PBA_8K - 1); | |
762 | break; | |
763 | default: | |
764 | break; | |
765 | } | |
766 | ||
767 | /* if short on rx space, rx wins and must trump tx | |
768 | * adjustment or use Early Receive if available */ | |
769 | if (pba < min_rx_space) { | |
770 | switch (adapter->hw.mac_type) { | |
771 | case e1000_82573: | |
772 | /* ERT enabled in e1000_configure_rx */ | |
773 | break; | |
774 | default: | |
775 | pba = min_rx_space; | |
776 | break; | |
777 | } | |
778 | } | |
779 | } | |
1da177e4 | 780 | } |
2d7edb92 | 781 | |
1da177e4 LT |
782 | E1000_WRITE_REG(&adapter->hw, PBA, pba); |
783 | ||
784 | /* flow control settings */ | |
f11b7f85 JK |
785 | /* Set the FC high water mark to 90% of the FIFO size. |
786 | * Required to clear last 3 LSB */ | |
787 | fc_high_water_mark = ((pba * 9216)/10) & 0xFFF8; | |
cd94dd0b AK |
788 | /* We can't use 90% on small FIFOs because the remainder |
789 | * would be less than 1 full frame. In this case, we size | |
790 | * it to allow at least a full frame above the high water | |
791 | * mark. */ | |
792 | if (pba < E1000_PBA_16K) | |
793 | fc_high_water_mark = (pba * 1024) - 1600; | |
f11b7f85 JK |
794 | |
795 | adapter->hw.fc_high_water = fc_high_water_mark; | |
796 | adapter->hw.fc_low_water = fc_high_water_mark - 8; | |
87041639 JK |
797 | if (adapter->hw.mac_type == e1000_80003es2lan) |
798 | adapter->hw.fc_pause_time = 0xFFFF; | |
799 | else | |
800 | adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME; | |
1da177e4 LT |
801 | adapter->hw.fc_send_xon = 1; |
802 | adapter->hw.fc = adapter->hw.original_fc; | |
803 | ||
2d7edb92 | 804 | /* Allow time for pending master requests to run */ |
1da177e4 | 805 | e1000_reset_hw(&adapter->hw); |
96838a40 | 806 | if (adapter->hw.mac_type >= e1000_82544) |
1da177e4 | 807 | E1000_WRITE_REG(&adapter->hw, WUC, 0); |
09ae3e88 | 808 | |
96838a40 | 809 | if (e1000_init_hw(&adapter->hw)) |
1da177e4 | 810 | DPRINTK(PROBE, ERR, "Hardware Error\n"); |
2d7edb92 | 811 | e1000_update_mng_vlan(adapter); |
3d5460a0 JB |
812 | |
813 | /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */ | |
814 | if (adapter->hw.mac_type >= e1000_82544 && | |
815 | adapter->hw.mac_type <= e1000_82547_rev_2 && | |
816 | adapter->hw.autoneg == 1 && | |
817 | adapter->hw.autoneg_advertised == ADVERTISE_1000_FULL) { | |
818 | uint32_t ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
819 | /* clear phy power management bit if we are in gig only mode, | |
820 | * which if enabled will attempt negotiation to 100Mb, which | |
821 | * can cause a loss of link at power off or driver unload */ | |
822 | ctrl &= ~E1000_CTRL_SWDPIN3; | |
823 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
824 | } | |
825 | ||
1da177e4 LT |
826 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
827 | E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE); | |
828 | ||
829 | e1000_reset_adaptive(&adapter->hw); | |
830 | e1000_phy_get_info(&adapter->hw, &adapter->phy_info); | |
9a53a202 AK |
831 | |
832 | if (!adapter->smart_power_down && | |
833 | (adapter->hw.mac_type == e1000_82571 || | |
834 | adapter->hw.mac_type == e1000_82572)) { | |
835 | uint16_t phy_data = 0; | |
836 | /* speed up time to link by disabling smart power down, ignore | |
837 | * the return value of this function because there is nothing | |
838 | * different we would do if it failed */ | |
839 | e1000_read_phy_reg(&adapter->hw, IGP02E1000_PHY_POWER_MGMT, | |
840 | &phy_data); | |
841 | phy_data &= ~IGP02E1000_PM_SPD; | |
842 | e1000_write_phy_reg(&adapter->hw, IGP02E1000_PHY_POWER_MGMT, | |
843 | phy_data); | |
844 | } | |
845 | ||
0fccd0e9 | 846 | e1000_release_manageability(adapter); |
1da177e4 LT |
847 | } |
848 | ||
849 | /** | |
850 | * e1000_probe - Device Initialization Routine | |
851 | * @pdev: PCI device information struct | |
852 | * @ent: entry in e1000_pci_tbl | |
853 | * | |
854 | * Returns 0 on success, negative on failure | |
855 | * | |
856 | * e1000_probe initializes an adapter identified by a pci_dev structure. | |
857 | * The OS initialization, configuring of the adapter private structure, | |
858 | * and a hardware reset occur. | |
859 | **/ | |
860 | ||
861 | static int __devinit | |
862 | e1000_probe(struct pci_dev *pdev, | |
863 | const struct pci_device_id *ent) | |
864 | { | |
865 | struct net_device *netdev; | |
866 | struct e1000_adapter *adapter; | |
2d7edb92 | 867 | unsigned long mmio_start, mmio_len; |
cd94dd0b | 868 | unsigned long flash_start, flash_len; |
2d7edb92 | 869 | |
1da177e4 | 870 | static int cards_found = 0; |
120cd576 | 871 | static int global_quad_port_a = 0; /* global ksp3 port a indication */ |
2d7edb92 | 872 | int i, err, pci_using_dac; |
120cd576 | 873 | uint16_t eeprom_data = 0; |
1da177e4 | 874 | uint16_t eeprom_apme_mask = E1000_EEPROM_APME; |
96838a40 | 875 | if ((err = pci_enable_device(pdev))) |
1da177e4 LT |
876 | return err; |
877 | ||
cd94dd0b AK |
878 | if (!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK)) && |
879 | !(err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))) { | |
1da177e4 LT |
880 | pci_using_dac = 1; |
881 | } else { | |
cd94dd0b AK |
882 | if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) && |
883 | (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) { | |
1da177e4 | 884 | E1000_ERR("No usable DMA configuration, aborting\n"); |
6dd62ab0 | 885 | goto err_dma; |
1da177e4 LT |
886 | } |
887 | pci_using_dac = 0; | |
888 | } | |
889 | ||
96838a40 | 890 | if ((err = pci_request_regions(pdev, e1000_driver_name))) |
6dd62ab0 | 891 | goto err_pci_reg; |
1da177e4 LT |
892 | |
893 | pci_set_master(pdev); | |
894 | ||
6dd62ab0 | 895 | err = -ENOMEM; |
1da177e4 | 896 | netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
6dd62ab0 | 897 | if (!netdev) |
1da177e4 | 898 | goto err_alloc_etherdev; |
1da177e4 | 899 | |
1da177e4 LT |
900 | SET_NETDEV_DEV(netdev, &pdev->dev); |
901 | ||
902 | pci_set_drvdata(pdev, netdev); | |
60490fe0 | 903 | adapter = netdev_priv(netdev); |
1da177e4 LT |
904 | adapter->netdev = netdev; |
905 | adapter->pdev = pdev; | |
906 | adapter->hw.back = adapter; | |
907 | adapter->msg_enable = (1 << debug) - 1; | |
908 | ||
909 | mmio_start = pci_resource_start(pdev, BAR_0); | |
910 | mmio_len = pci_resource_len(pdev, BAR_0); | |
911 | ||
6dd62ab0 | 912 | err = -EIO; |
1da177e4 | 913 | adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); |
6dd62ab0 | 914 | if (!adapter->hw.hw_addr) |
1da177e4 | 915 | goto err_ioremap; |
1da177e4 | 916 | |
96838a40 JB |
917 | for (i = BAR_1; i <= BAR_5; i++) { |
918 | if (pci_resource_len(pdev, i) == 0) | |
1da177e4 | 919 | continue; |
96838a40 | 920 | if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { |
1da177e4 LT |
921 | adapter->hw.io_base = pci_resource_start(pdev, i); |
922 | break; | |
923 | } | |
924 | } | |
925 | ||
926 | netdev->open = &e1000_open; | |
927 | netdev->stop = &e1000_close; | |
928 | netdev->hard_start_xmit = &e1000_xmit_frame; | |
929 | netdev->get_stats = &e1000_get_stats; | |
930 | netdev->set_multicast_list = &e1000_set_multi; | |
931 | netdev->set_mac_address = &e1000_set_mac; | |
932 | netdev->change_mtu = &e1000_change_mtu; | |
933 | netdev->do_ioctl = &e1000_ioctl; | |
934 | e1000_set_ethtool_ops(netdev); | |
935 | netdev->tx_timeout = &e1000_tx_timeout; | |
936 | netdev->watchdog_timeo = 5 * HZ; | |
937 | #ifdef CONFIG_E1000_NAPI | |
bea3348e | 938 | netif_napi_add(netdev, &adapter->napi, e1000_clean, 64); |
1da177e4 LT |
939 | #endif |
940 | netdev->vlan_rx_register = e1000_vlan_rx_register; | |
941 | netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid; | |
942 | netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid; | |
943 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
944 | netdev->poll_controller = e1000_netpoll; | |
945 | #endif | |
0eb5a34c | 946 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
1da177e4 LT |
947 | |
948 | netdev->mem_start = mmio_start; | |
949 | netdev->mem_end = mmio_start + mmio_len; | |
950 | netdev->base_addr = adapter->hw.io_base; | |
951 | ||
952 | adapter->bd_number = cards_found; | |
953 | ||
954 | /* setup the private structure */ | |
955 | ||
96838a40 | 956 | if ((err = e1000_sw_init(adapter))) |
1da177e4 LT |
957 | goto err_sw_init; |
958 | ||
6dd62ab0 | 959 | err = -EIO; |
cd94dd0b AK |
960 | /* Flash BAR mapping must happen after e1000_sw_init |
961 | * because it depends on mac_type */ | |
962 | if ((adapter->hw.mac_type == e1000_ich8lan) && | |
963 | (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) { | |
964 | flash_start = pci_resource_start(pdev, 1); | |
965 | flash_len = pci_resource_len(pdev, 1); | |
966 | adapter->hw.flash_address = ioremap(flash_start, flash_len); | |
6dd62ab0 | 967 | if (!adapter->hw.flash_address) |
cd94dd0b | 968 | goto err_flashmap; |
cd94dd0b AK |
969 | } |
970 | ||
6dd62ab0 | 971 | if (e1000_check_phy_reset_block(&adapter->hw)) |
2d7edb92 MC |
972 | DPRINTK(PROBE, INFO, "PHY reset is blocked due to SOL/IDER session.\n"); |
973 | ||
96838a40 | 974 | if (adapter->hw.mac_type >= e1000_82543) { |
1da177e4 LT |
975 | netdev->features = NETIF_F_SG | |
976 | NETIF_F_HW_CSUM | | |
977 | NETIF_F_HW_VLAN_TX | | |
978 | NETIF_F_HW_VLAN_RX | | |
979 | NETIF_F_HW_VLAN_FILTER; | |
cd94dd0b AK |
980 | if (adapter->hw.mac_type == e1000_ich8lan) |
981 | netdev->features &= ~NETIF_F_HW_VLAN_FILTER; | |
1da177e4 LT |
982 | } |
983 | ||
96838a40 | 984 | if ((adapter->hw.mac_type >= e1000_82544) && |
1da177e4 LT |
985 | (adapter->hw.mac_type != e1000_82547)) |
986 | netdev->features |= NETIF_F_TSO; | |
2d7edb92 | 987 | |
96838a40 | 988 | if (adapter->hw.mac_type > e1000_82547_rev_2) |
87ca4e5b | 989 | netdev->features |= NETIF_F_TSO6; |
96838a40 | 990 | if (pci_using_dac) |
1da177e4 LT |
991 | netdev->features |= NETIF_F_HIGHDMA; |
992 | ||
76c224bc AK |
993 | netdev->features |= NETIF_F_LLTX; |
994 | ||
2d7edb92 MC |
995 | adapter->en_mng_pt = e1000_enable_mng_pass_thru(&adapter->hw); |
996 | ||
cd94dd0b AK |
997 | /* initialize eeprom parameters */ |
998 | ||
999 | if (e1000_init_eeprom_params(&adapter->hw)) { | |
1000 | E1000_ERR("EEPROM initialization failed\n"); | |
6dd62ab0 | 1001 | goto err_eeprom; |
cd94dd0b AK |
1002 | } |
1003 | ||
96838a40 | 1004 | /* before reading the EEPROM, reset the controller to |
1da177e4 | 1005 | * put the device in a known good starting state */ |
96838a40 | 1006 | |
1da177e4 LT |
1007 | e1000_reset_hw(&adapter->hw); |
1008 | ||
1009 | /* make sure the EEPROM is good */ | |
1010 | ||
96838a40 | 1011 | if (e1000_validate_eeprom_checksum(&adapter->hw) < 0) { |
1da177e4 | 1012 | DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n"); |
1da177e4 LT |
1013 | goto err_eeprom; |
1014 | } | |
1015 | ||
1016 | /* copy the MAC address out of the EEPROM */ | |
1017 | ||
96838a40 | 1018 | if (e1000_read_mac_addr(&adapter->hw)) |
1da177e4 LT |
1019 | DPRINTK(PROBE, ERR, "EEPROM Read Error\n"); |
1020 | memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); | |
9beb0ac1 | 1021 | memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len); |
1da177e4 | 1022 | |
96838a40 | 1023 | if (!is_valid_ether_addr(netdev->perm_addr)) { |
1da177e4 | 1024 | DPRINTK(PROBE, ERR, "Invalid MAC Address\n"); |
1da177e4 LT |
1025 | goto err_eeprom; |
1026 | } | |
1027 | ||
1da177e4 LT |
1028 | e1000_get_bus_info(&adapter->hw); |
1029 | ||
1030 | init_timer(&adapter->tx_fifo_stall_timer); | |
1031 | adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall; | |
1032 | adapter->tx_fifo_stall_timer.data = (unsigned long) adapter; | |
1033 | ||
1034 | init_timer(&adapter->watchdog_timer); | |
1035 | adapter->watchdog_timer.function = &e1000_watchdog; | |
1036 | adapter->watchdog_timer.data = (unsigned long) adapter; | |
1037 | ||
1da177e4 LT |
1038 | init_timer(&adapter->phy_info_timer); |
1039 | adapter->phy_info_timer.function = &e1000_update_phy_info; | |
1040 | adapter->phy_info_timer.data = (unsigned long) adapter; | |
1041 | ||
65f27f38 | 1042 | INIT_WORK(&adapter->reset_task, e1000_reset_task); |
1da177e4 | 1043 | |
1da177e4 LT |
1044 | e1000_check_options(adapter); |
1045 | ||
1046 | /* Initial Wake on LAN setting | |
1047 | * If APM wake is enabled in the EEPROM, | |
1048 | * enable the ACPI Magic Packet filter | |
1049 | */ | |
1050 | ||
96838a40 | 1051 | switch (adapter->hw.mac_type) { |
1da177e4 LT |
1052 | case e1000_82542_rev2_0: |
1053 | case e1000_82542_rev2_1: | |
1054 | case e1000_82543: | |
1055 | break; | |
1056 | case e1000_82544: | |
1057 | e1000_read_eeprom(&adapter->hw, | |
1058 | EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); | |
1059 | eeprom_apme_mask = E1000_EEPROM_82544_APM; | |
1060 | break; | |
cd94dd0b AK |
1061 | case e1000_ich8lan: |
1062 | e1000_read_eeprom(&adapter->hw, | |
1063 | EEPROM_INIT_CONTROL1_REG, 1, &eeprom_data); | |
1064 | eeprom_apme_mask = E1000_EEPROM_ICH8_APME; | |
1065 | break; | |
1da177e4 LT |
1066 | case e1000_82546: |
1067 | case e1000_82546_rev_3: | |
fd803241 | 1068 | case e1000_82571: |
6418ecc6 | 1069 | case e1000_80003es2lan: |
96838a40 | 1070 | if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1){ |
1da177e4 LT |
1071 | e1000_read_eeprom(&adapter->hw, |
1072 | EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); | |
1073 | break; | |
1074 | } | |
1075 | /* Fall Through */ | |
1076 | default: | |
1077 | e1000_read_eeprom(&adapter->hw, | |
1078 | EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); | |
1079 | break; | |
1080 | } | |
96838a40 | 1081 | if (eeprom_data & eeprom_apme_mask) |
120cd576 JB |
1082 | adapter->eeprom_wol |= E1000_WUFC_MAG; |
1083 | ||
1084 | /* now that we have the eeprom settings, apply the special cases | |
1085 | * where the eeprom may be wrong or the board simply won't support | |
1086 | * wake on lan on a particular port */ | |
1087 | switch (pdev->device) { | |
1088 | case E1000_DEV_ID_82546GB_PCIE: | |
1089 | adapter->eeprom_wol = 0; | |
1090 | break; | |
1091 | case E1000_DEV_ID_82546EB_FIBER: | |
1092 | case E1000_DEV_ID_82546GB_FIBER: | |
1093 | case E1000_DEV_ID_82571EB_FIBER: | |
1094 | /* Wake events only supported on port A for dual fiber | |
1095 | * regardless of eeprom setting */ | |
1096 | if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1) | |
1097 | adapter->eeprom_wol = 0; | |
1098 | break; | |
1099 | case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3: | |
5881cde8 | 1100 | case E1000_DEV_ID_82571EB_QUAD_COPPER: |
ce57a02c | 1101 | case E1000_DEV_ID_82571EB_QUAD_FIBER: |
fc2307d0 | 1102 | case E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE: |
f4ec7f98 | 1103 | case E1000_DEV_ID_82571PT_QUAD_COPPER: |
120cd576 JB |
1104 | /* if quad port adapter, disable WoL on all but port A */ |
1105 | if (global_quad_port_a != 0) | |
1106 | adapter->eeprom_wol = 0; | |
1107 | else | |
1108 | adapter->quad_port_a = 1; | |
1109 | /* Reset for multiple quad port adapters */ | |
1110 | if (++global_quad_port_a == 4) | |
1111 | global_quad_port_a = 0; | |
1112 | break; | |
1113 | } | |
1114 | ||
1115 | /* initialize the wol settings based on the eeprom settings */ | |
1116 | adapter->wol = adapter->eeprom_wol; | |
1da177e4 | 1117 | |
fb3d47d4 JK |
1118 | /* print bus type/speed/width info */ |
1119 | { | |
1120 | struct e1000_hw *hw = &adapter->hw; | |
1121 | DPRINTK(PROBE, INFO, "(PCI%s:%s:%s) ", | |
1122 | ((hw->bus_type == e1000_bus_type_pcix) ? "-X" : | |
1123 | (hw->bus_type == e1000_bus_type_pci_express ? " Express":"")), | |
1124 | ((hw->bus_speed == e1000_bus_speed_2500) ? "2.5Gb/s" : | |
1125 | (hw->bus_speed == e1000_bus_speed_133) ? "133MHz" : | |
1126 | (hw->bus_speed == e1000_bus_speed_120) ? "120MHz" : | |
1127 | (hw->bus_speed == e1000_bus_speed_100) ? "100MHz" : | |
1128 | (hw->bus_speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"), | |
1129 | ((hw->bus_width == e1000_bus_width_64) ? "64-bit" : | |
1130 | (hw->bus_width == e1000_bus_width_pciex_4) ? "Width x4" : | |
1131 | (hw->bus_width == e1000_bus_width_pciex_1) ? "Width x1" : | |
1132 | "32-bit")); | |
1133 | } | |
1134 | ||
1135 | for (i = 0; i < 6; i++) | |
1136 | printk("%2.2x%c", netdev->dev_addr[i], i == 5 ? '\n' : ':'); | |
1137 | ||
1da177e4 LT |
1138 | /* reset the hardware with the new settings */ |
1139 | e1000_reset(adapter); | |
1140 | ||
b55ccb35 JK |
1141 | /* If the controller is 82573 and f/w is AMT, do not set |
1142 | * DRV_LOAD until the interface is up. For all other cases, | |
1143 | * let the f/w know that the h/w is now under the control | |
1144 | * of the driver. */ | |
1145 | if (adapter->hw.mac_type != e1000_82573 || | |
1146 | !e1000_check_mng_mode(&adapter->hw)) | |
1147 | e1000_get_hw_control(adapter); | |
2d7edb92 | 1148 | |
1314bbf3 AK |
1149 | /* tell the stack to leave us alone until e1000_open() is called */ |
1150 | netif_carrier_off(netdev); | |
1151 | netif_stop_queue(netdev); | |
416b5d10 AK |
1152 | |
1153 | strcpy(netdev->name, "eth%d"); | |
1154 | if ((err = register_netdev(netdev))) | |
1155 | goto err_register; | |
1314bbf3 | 1156 | |
1da177e4 LT |
1157 | DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n"); |
1158 | ||
1159 | cards_found++; | |
1160 | return 0; | |
1161 | ||
1162 | err_register: | |
6dd62ab0 VA |
1163 | e1000_release_hw_control(adapter); |
1164 | err_eeprom: | |
1165 | if (!e1000_check_phy_reset_block(&adapter->hw)) | |
1166 | e1000_phy_hw_reset(&adapter->hw); | |
1167 | ||
cd94dd0b AK |
1168 | if (adapter->hw.flash_address) |
1169 | iounmap(adapter->hw.flash_address); | |
1170 | err_flashmap: | |
6dd62ab0 VA |
1171 | #ifdef CONFIG_E1000_NAPI |
1172 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1173 | dev_put(&adapter->polling_netdev[i]); | |
1174 | #endif | |
1175 | ||
1176 | kfree(adapter->tx_ring); | |
1177 | kfree(adapter->rx_ring); | |
1178 | #ifdef CONFIG_E1000_NAPI | |
1179 | kfree(adapter->polling_netdev); | |
1180 | #endif | |
1da177e4 | 1181 | err_sw_init: |
1da177e4 LT |
1182 | iounmap(adapter->hw.hw_addr); |
1183 | err_ioremap: | |
1184 | free_netdev(netdev); | |
1185 | err_alloc_etherdev: | |
1186 | pci_release_regions(pdev); | |
6dd62ab0 VA |
1187 | err_pci_reg: |
1188 | err_dma: | |
1189 | pci_disable_device(pdev); | |
1da177e4 LT |
1190 | return err; |
1191 | } | |
1192 | ||
1193 | /** | |
1194 | * e1000_remove - Device Removal Routine | |
1195 | * @pdev: PCI device information struct | |
1196 | * | |
1197 | * e1000_remove is called by the PCI subsystem to alert the driver | |
1198 | * that it should release a PCI device. The could be caused by a | |
1199 | * Hot-Plug event, or because the driver is going to be removed from | |
1200 | * memory. | |
1201 | **/ | |
1202 | ||
1203 | static void __devexit | |
1204 | e1000_remove(struct pci_dev *pdev) | |
1205 | { | |
1206 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 1207 | struct e1000_adapter *adapter = netdev_priv(netdev); |
581d708e MC |
1208 | #ifdef CONFIG_E1000_NAPI |
1209 | int i; | |
1210 | #endif | |
1da177e4 | 1211 | |
28e53bdd | 1212 | cancel_work_sync(&adapter->reset_task); |
be2b28ed | 1213 | |
0fccd0e9 | 1214 | e1000_release_manageability(adapter); |
1da177e4 | 1215 | |
b55ccb35 JK |
1216 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
1217 | * would have already happened in close and is redundant. */ | |
1218 | e1000_release_hw_control(adapter); | |
2d7edb92 | 1219 | |
581d708e | 1220 | #ifdef CONFIG_E1000_NAPI |
f56799ea | 1221 | for (i = 0; i < adapter->num_rx_queues; i++) |
15333061 | 1222 | dev_put(&adapter->polling_netdev[i]); |
581d708e | 1223 | #endif |
1da177e4 | 1224 | |
bea3348e SH |
1225 | unregister_netdev(netdev); |
1226 | ||
96838a40 | 1227 | if (!e1000_check_phy_reset_block(&adapter->hw)) |
2d7edb92 | 1228 | e1000_phy_hw_reset(&adapter->hw); |
1da177e4 | 1229 | |
24025e4e MC |
1230 | kfree(adapter->tx_ring); |
1231 | kfree(adapter->rx_ring); | |
1232 | #ifdef CONFIG_E1000_NAPI | |
1233 | kfree(adapter->polling_netdev); | |
1234 | #endif | |
1235 | ||
1da177e4 | 1236 | iounmap(adapter->hw.hw_addr); |
cd94dd0b AK |
1237 | if (adapter->hw.flash_address) |
1238 | iounmap(adapter->hw.flash_address); | |
1da177e4 LT |
1239 | pci_release_regions(pdev); |
1240 | ||
1241 | free_netdev(netdev); | |
1242 | ||
1243 | pci_disable_device(pdev); | |
1244 | } | |
1245 | ||
1246 | /** | |
1247 | * e1000_sw_init - Initialize general software structures (struct e1000_adapter) | |
1248 | * @adapter: board private structure to initialize | |
1249 | * | |
1250 | * e1000_sw_init initializes the Adapter private data structure. | |
1251 | * Fields are initialized based on PCI device information and | |
1252 | * OS network device settings (MTU size). | |
1253 | **/ | |
1254 | ||
1255 | static int __devinit | |
1256 | e1000_sw_init(struct e1000_adapter *adapter) | |
1257 | { | |
1258 | struct e1000_hw *hw = &adapter->hw; | |
1259 | struct net_device *netdev = adapter->netdev; | |
1260 | struct pci_dev *pdev = adapter->pdev; | |
581d708e MC |
1261 | #ifdef CONFIG_E1000_NAPI |
1262 | int i; | |
1263 | #endif | |
1da177e4 LT |
1264 | |
1265 | /* PCI config space info */ | |
1266 | ||
1267 | hw->vendor_id = pdev->vendor; | |
1268 | hw->device_id = pdev->device; | |
1269 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
1270 | hw->subsystem_id = pdev->subsystem_device; | |
44c10138 | 1271 | hw->revision_id = pdev->revision; |
1da177e4 LT |
1272 | |
1273 | pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); | |
1274 | ||
eb0f8054 | 1275 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
9e2feace | 1276 | adapter->rx_ps_bsize0 = E1000_RXBUFFER_128; |
1da177e4 LT |
1277 | hw->max_frame_size = netdev->mtu + |
1278 | ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; | |
1279 | hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; | |
1280 | ||
1281 | /* identify the MAC */ | |
1282 | ||
96838a40 | 1283 | if (e1000_set_mac_type(hw)) { |
1da177e4 LT |
1284 | DPRINTK(PROBE, ERR, "Unknown MAC Type\n"); |
1285 | return -EIO; | |
1286 | } | |
1287 | ||
96838a40 | 1288 | switch (hw->mac_type) { |
1da177e4 LT |
1289 | default: |
1290 | break; | |
1291 | case e1000_82541: | |
1292 | case e1000_82547: | |
1293 | case e1000_82541_rev_2: | |
1294 | case e1000_82547_rev_2: | |
1295 | hw->phy_init_script = 1; | |
1296 | break; | |
1297 | } | |
1298 | ||
1299 | e1000_set_media_type(hw); | |
1300 | ||
1301 | hw->wait_autoneg_complete = FALSE; | |
1302 | hw->tbi_compatibility_en = TRUE; | |
1303 | hw->adaptive_ifs = TRUE; | |
1304 | ||
1305 | /* Copper options */ | |
1306 | ||
96838a40 | 1307 | if (hw->media_type == e1000_media_type_copper) { |
1da177e4 LT |
1308 | hw->mdix = AUTO_ALL_MODES; |
1309 | hw->disable_polarity_correction = FALSE; | |
1310 | hw->master_slave = E1000_MASTER_SLAVE; | |
1311 | } | |
1312 | ||
f56799ea JK |
1313 | adapter->num_tx_queues = 1; |
1314 | adapter->num_rx_queues = 1; | |
581d708e MC |
1315 | |
1316 | if (e1000_alloc_queues(adapter)) { | |
1317 | DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n"); | |
1318 | return -ENOMEM; | |
1319 | } | |
1320 | ||
1321 | #ifdef CONFIG_E1000_NAPI | |
f56799ea | 1322 | for (i = 0; i < adapter->num_rx_queues; i++) { |
581d708e | 1323 | adapter->polling_netdev[i].priv = adapter; |
581d708e MC |
1324 | dev_hold(&adapter->polling_netdev[i]); |
1325 | set_bit(__LINK_STATE_START, &adapter->polling_netdev[i].state); | |
1326 | } | |
7bfa4816 | 1327 | spin_lock_init(&adapter->tx_queue_lock); |
24025e4e MC |
1328 | #endif |
1329 | ||
47313054 HX |
1330 | /* Explicitly disable IRQ since the NIC can be in any state. */ |
1331 | atomic_set(&adapter->irq_sem, 0); | |
1332 | e1000_irq_disable(adapter); | |
1333 | ||
1da177e4 | 1334 | spin_lock_init(&adapter->stats_lock); |
1da177e4 | 1335 | |
1314bbf3 AK |
1336 | set_bit(__E1000_DOWN, &adapter->flags); |
1337 | ||
1da177e4 LT |
1338 | return 0; |
1339 | } | |
1340 | ||
581d708e MC |
1341 | /** |
1342 | * e1000_alloc_queues - Allocate memory for all rings | |
1343 | * @adapter: board private structure to initialize | |
1344 | * | |
1345 | * We allocate one ring per queue at run-time since we don't know the | |
1346 | * number of queues at compile-time. The polling_netdev array is | |
1347 | * intended for Multiqueue, but should work fine with a single queue. | |
1348 | **/ | |
1349 | ||
1350 | static int __devinit | |
1351 | e1000_alloc_queues(struct e1000_adapter *adapter) | |
1352 | { | |
1c7e5b12 YB |
1353 | adapter->tx_ring = kcalloc(adapter->num_tx_queues, |
1354 | sizeof(struct e1000_tx_ring), GFP_KERNEL); | |
581d708e MC |
1355 | if (!adapter->tx_ring) |
1356 | return -ENOMEM; | |
581d708e | 1357 | |
1c7e5b12 YB |
1358 | adapter->rx_ring = kcalloc(adapter->num_rx_queues, |
1359 | sizeof(struct e1000_rx_ring), GFP_KERNEL); | |
581d708e MC |
1360 | if (!adapter->rx_ring) { |
1361 | kfree(adapter->tx_ring); | |
1362 | return -ENOMEM; | |
1363 | } | |
581d708e MC |
1364 | |
1365 | #ifdef CONFIG_E1000_NAPI | |
1c7e5b12 YB |
1366 | adapter->polling_netdev = kcalloc(adapter->num_rx_queues, |
1367 | sizeof(struct net_device), | |
1368 | GFP_KERNEL); | |
581d708e MC |
1369 | if (!adapter->polling_netdev) { |
1370 | kfree(adapter->tx_ring); | |
1371 | kfree(adapter->rx_ring); | |
1372 | return -ENOMEM; | |
1373 | } | |
581d708e MC |
1374 | #endif |
1375 | ||
1376 | return E1000_SUCCESS; | |
1377 | } | |
1378 | ||
1da177e4 LT |
1379 | /** |
1380 | * e1000_open - Called when a network interface is made active | |
1381 | * @netdev: network interface device structure | |
1382 | * | |
1383 | * Returns 0 on success, negative value on failure | |
1384 | * | |
1385 | * The open entry point is called when a network interface is made | |
1386 | * active by the system (IFF_UP). At this point all resources needed | |
1387 | * for transmit and receive operations are allocated, the interrupt | |
1388 | * handler is registered with the OS, the watchdog timer is started, | |
1389 | * and the stack is notified that the interface is ready. | |
1390 | **/ | |
1391 | ||
1392 | static int | |
1393 | e1000_open(struct net_device *netdev) | |
1394 | { | |
60490fe0 | 1395 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1396 | int err; |
1397 | ||
2db10a08 | 1398 | /* disallow open during test */ |
1314bbf3 | 1399 | if (test_bit(__E1000_TESTING, &adapter->flags)) |
2db10a08 AK |
1400 | return -EBUSY; |
1401 | ||
1da177e4 | 1402 | /* allocate transmit descriptors */ |
e0aac5a2 AK |
1403 | err = e1000_setup_all_tx_resources(adapter); |
1404 | if (err) | |
1da177e4 LT |
1405 | goto err_setup_tx; |
1406 | ||
1407 | /* allocate receive descriptors */ | |
e0aac5a2 | 1408 | err = e1000_setup_all_rx_resources(adapter); |
b5bf28cd | 1409 | if (err) |
e0aac5a2 | 1410 | goto err_setup_rx; |
b5bf28cd | 1411 | |
79f05bf0 AK |
1412 | e1000_power_up_phy(adapter); |
1413 | ||
2d7edb92 | 1414 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
96838a40 | 1415 | if ((adapter->hw.mng_cookie.status & |
2d7edb92 MC |
1416 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { |
1417 | e1000_update_mng_vlan(adapter); | |
1418 | } | |
1da177e4 | 1419 | |
b55ccb35 JK |
1420 | /* If AMT is enabled, let the firmware know that the network |
1421 | * interface is now open */ | |
1422 | if (adapter->hw.mac_type == e1000_82573 && | |
1423 | e1000_check_mng_mode(&adapter->hw)) | |
1424 | e1000_get_hw_control(adapter); | |
1425 | ||
e0aac5a2 AK |
1426 | /* before we allocate an interrupt, we must be ready to handle it. |
1427 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt | |
1428 | * as soon as we call pci_request_irq, so we have to setup our | |
1429 | * clean_rx handler before we do so. */ | |
1430 | e1000_configure(adapter); | |
1431 | ||
1432 | err = e1000_request_irq(adapter); | |
1433 | if (err) | |
1434 | goto err_req_irq; | |
1435 | ||
1436 | /* From here on the code is the same as e1000_up() */ | |
1437 | clear_bit(__E1000_DOWN, &adapter->flags); | |
1438 | ||
47313054 | 1439 | #ifdef CONFIG_E1000_NAPI |
bea3348e | 1440 | napi_enable(&adapter->napi); |
47313054 HX |
1441 | #endif |
1442 | ||
e0aac5a2 AK |
1443 | e1000_irq_enable(adapter); |
1444 | ||
1445 | /* fire a link status change interrupt to start the watchdog */ | |
1446 | E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_LSC); | |
1447 | ||
1da177e4 LT |
1448 | return E1000_SUCCESS; |
1449 | ||
b5bf28cd | 1450 | err_req_irq: |
e0aac5a2 AK |
1451 | e1000_release_hw_control(adapter); |
1452 | e1000_power_down_phy(adapter); | |
581d708e | 1453 | e1000_free_all_rx_resources(adapter); |
1da177e4 | 1454 | err_setup_rx: |
581d708e | 1455 | e1000_free_all_tx_resources(adapter); |
1da177e4 LT |
1456 | err_setup_tx: |
1457 | e1000_reset(adapter); | |
1458 | ||
1459 | return err; | |
1460 | } | |
1461 | ||
1462 | /** | |
1463 | * e1000_close - Disables a network interface | |
1464 | * @netdev: network interface device structure | |
1465 | * | |
1466 | * Returns 0, this is not allowed to fail | |
1467 | * | |
1468 | * The close entry point is called when an interface is de-activated | |
1469 | * by the OS. The hardware is still under the drivers control, but | |
1470 | * needs to be disabled. A global MAC reset is issued to stop the | |
1471 | * hardware, and all transmit and receive resources are freed. | |
1472 | **/ | |
1473 | ||
1474 | static int | |
1475 | e1000_close(struct net_device *netdev) | |
1476 | { | |
60490fe0 | 1477 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 1478 | |
2db10a08 | 1479 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
1da177e4 | 1480 | e1000_down(adapter); |
79f05bf0 | 1481 | e1000_power_down_phy(adapter); |
2db10a08 | 1482 | e1000_free_irq(adapter); |
1da177e4 | 1483 | |
581d708e MC |
1484 | e1000_free_all_tx_resources(adapter); |
1485 | e1000_free_all_rx_resources(adapter); | |
1da177e4 | 1486 | |
4666560a BA |
1487 | /* kill manageability vlan ID if supported, but not if a vlan with |
1488 | * the same ID is registered on the host OS (let 8021q kill it) */ | |
96838a40 | 1489 | if ((adapter->hw.mng_cookie.status & |
4666560a BA |
1490 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
1491 | !(adapter->vlgrp && | |
5c15bdec | 1492 | vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) { |
2d7edb92 MC |
1493 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
1494 | } | |
b55ccb35 JK |
1495 | |
1496 | /* If AMT is enabled, let the firmware know that the network | |
1497 | * interface is now closed */ | |
1498 | if (adapter->hw.mac_type == e1000_82573 && | |
1499 | e1000_check_mng_mode(&adapter->hw)) | |
1500 | e1000_release_hw_control(adapter); | |
1501 | ||
1da177e4 LT |
1502 | return 0; |
1503 | } | |
1504 | ||
1505 | /** | |
1506 | * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary | |
1507 | * @adapter: address of board private structure | |
2d7edb92 MC |
1508 | * @start: address of beginning of memory |
1509 | * @len: length of memory | |
1da177e4 | 1510 | **/ |
e619d523 | 1511 | static boolean_t |
1da177e4 LT |
1512 | e1000_check_64k_bound(struct e1000_adapter *adapter, |
1513 | void *start, unsigned long len) | |
1514 | { | |
1515 | unsigned long begin = (unsigned long) start; | |
1516 | unsigned long end = begin + len; | |
1517 | ||
2648345f MC |
1518 | /* First rev 82545 and 82546 need to not allow any memory |
1519 | * write location to cross 64k boundary due to errata 23 */ | |
1da177e4 | 1520 | if (adapter->hw.mac_type == e1000_82545 || |
2648345f | 1521 | adapter->hw.mac_type == e1000_82546) { |
1da177e4 LT |
1522 | return ((begin ^ (end - 1)) >> 16) != 0 ? FALSE : TRUE; |
1523 | } | |
1524 | ||
1525 | return TRUE; | |
1526 | } | |
1527 | ||
1528 | /** | |
1529 | * e1000_setup_tx_resources - allocate Tx resources (Descriptors) | |
1530 | * @adapter: board private structure | |
581d708e | 1531 | * @txdr: tx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1532 | * |
1533 | * Return 0 on success, negative on failure | |
1534 | **/ | |
1535 | ||
3ad2cc67 | 1536 | static int |
581d708e MC |
1537 | e1000_setup_tx_resources(struct e1000_adapter *adapter, |
1538 | struct e1000_tx_ring *txdr) | |
1da177e4 | 1539 | { |
1da177e4 LT |
1540 | struct pci_dev *pdev = adapter->pdev; |
1541 | int size; | |
1542 | ||
1543 | size = sizeof(struct e1000_buffer) * txdr->count; | |
cd94dd0b | 1544 | txdr->buffer_info = vmalloc(size); |
96838a40 | 1545 | if (!txdr->buffer_info) { |
2648345f MC |
1546 | DPRINTK(PROBE, ERR, |
1547 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1da177e4 LT |
1548 | return -ENOMEM; |
1549 | } | |
1550 | memset(txdr->buffer_info, 0, size); | |
1551 | ||
1552 | /* round up to nearest 4K */ | |
1553 | ||
1554 | txdr->size = txdr->count * sizeof(struct e1000_tx_desc); | |
9099cfb9 | 1555 | txdr->size = ALIGN(txdr->size, 4096); |
1da177e4 LT |
1556 | |
1557 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); | |
96838a40 | 1558 | if (!txdr->desc) { |
1da177e4 | 1559 | setup_tx_desc_die: |
1da177e4 | 1560 | vfree(txdr->buffer_info); |
2648345f MC |
1561 | DPRINTK(PROBE, ERR, |
1562 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1da177e4 LT |
1563 | return -ENOMEM; |
1564 | } | |
1565 | ||
2648345f | 1566 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1567 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
1568 | void *olddesc = txdr->desc; | |
1569 | dma_addr_t olddma = txdr->dma; | |
2648345f MC |
1570 | DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes " |
1571 | "at %p\n", txdr->size, txdr->desc); | |
1572 | /* Try again, without freeing the previous */ | |
1da177e4 | 1573 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); |
2648345f | 1574 | /* Failed allocation, critical failure */ |
96838a40 | 1575 | if (!txdr->desc) { |
1da177e4 LT |
1576 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1577 | goto setup_tx_desc_die; | |
1578 | } | |
1579 | ||
1580 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { | |
1581 | /* give up */ | |
2648345f MC |
1582 | pci_free_consistent(pdev, txdr->size, txdr->desc, |
1583 | txdr->dma); | |
1da177e4 LT |
1584 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1585 | DPRINTK(PROBE, ERR, | |
2648345f MC |
1586 | "Unable to allocate aligned memory " |
1587 | "for the transmit descriptor ring\n"); | |
1da177e4 LT |
1588 | vfree(txdr->buffer_info); |
1589 | return -ENOMEM; | |
1590 | } else { | |
2648345f | 1591 | /* Free old allocation, new allocation was successful */ |
1da177e4 LT |
1592 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1593 | } | |
1594 | } | |
1595 | memset(txdr->desc, 0, txdr->size); | |
1596 | ||
1597 | txdr->next_to_use = 0; | |
1598 | txdr->next_to_clean = 0; | |
2ae76d98 | 1599 | spin_lock_init(&txdr->tx_lock); |
1da177e4 LT |
1600 | |
1601 | return 0; | |
1602 | } | |
1603 | ||
581d708e MC |
1604 | /** |
1605 | * e1000_setup_all_tx_resources - wrapper to allocate Tx resources | |
1606 | * (Descriptors) for all queues | |
1607 | * @adapter: board private structure | |
1608 | * | |
581d708e MC |
1609 | * Return 0 on success, negative on failure |
1610 | **/ | |
1611 | ||
1612 | int | |
1613 | e1000_setup_all_tx_resources(struct e1000_adapter *adapter) | |
1614 | { | |
1615 | int i, err = 0; | |
1616 | ||
f56799ea | 1617 | for (i = 0; i < adapter->num_tx_queues; i++) { |
581d708e MC |
1618 | err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
1619 | if (err) { | |
1620 | DPRINTK(PROBE, ERR, | |
1621 | "Allocation for Tx Queue %u failed\n", i); | |
3fbbc72e VA |
1622 | for (i-- ; i >= 0; i--) |
1623 | e1000_free_tx_resources(adapter, | |
1624 | &adapter->tx_ring[i]); | |
581d708e MC |
1625 | break; |
1626 | } | |
1627 | } | |
1628 | ||
1629 | return err; | |
1630 | } | |
1631 | ||
1da177e4 LT |
1632 | /** |
1633 | * e1000_configure_tx - Configure 8254x Transmit Unit after Reset | |
1634 | * @adapter: board private structure | |
1635 | * | |
1636 | * Configure the Tx unit of the MAC after a reset. | |
1637 | **/ | |
1638 | ||
1639 | static void | |
1640 | e1000_configure_tx(struct e1000_adapter *adapter) | |
1641 | { | |
581d708e MC |
1642 | uint64_t tdba; |
1643 | struct e1000_hw *hw = &adapter->hw; | |
1644 | uint32_t tdlen, tctl, tipg, tarc; | |
0fadb059 | 1645 | uint32_t ipgr1, ipgr2; |
1da177e4 LT |
1646 | |
1647 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1648 | ||
f56799ea | 1649 | switch (adapter->num_tx_queues) { |
24025e4e MC |
1650 | case 1: |
1651 | default: | |
581d708e MC |
1652 | tdba = adapter->tx_ring[0].dma; |
1653 | tdlen = adapter->tx_ring[0].count * | |
1654 | sizeof(struct e1000_tx_desc); | |
581d708e | 1655 | E1000_WRITE_REG(hw, TDLEN, tdlen); |
4ca213a6 AK |
1656 | E1000_WRITE_REG(hw, TDBAH, (tdba >> 32)); |
1657 | E1000_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL)); | |
581d708e | 1658 | E1000_WRITE_REG(hw, TDT, 0); |
4ca213a6 | 1659 | E1000_WRITE_REG(hw, TDH, 0); |
6a951698 AK |
1660 | adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH); |
1661 | adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT); | |
24025e4e MC |
1662 | break; |
1663 | } | |
1da177e4 LT |
1664 | |
1665 | /* Set the default values for the Tx Inter Packet Gap timer */ | |
d89b6c67 JB |
1666 | if (adapter->hw.mac_type <= e1000_82547_rev_2 && |
1667 | (hw->media_type == e1000_media_type_fiber || | |
1668 | hw->media_type == e1000_media_type_internal_serdes)) | |
0fadb059 JK |
1669 | tipg = DEFAULT_82543_TIPG_IPGT_FIBER; |
1670 | else | |
1671 | tipg = DEFAULT_82543_TIPG_IPGT_COPPER; | |
1672 | ||
581d708e | 1673 | switch (hw->mac_type) { |
1da177e4 LT |
1674 | case e1000_82542_rev2_0: |
1675 | case e1000_82542_rev2_1: | |
1676 | tipg = DEFAULT_82542_TIPG_IPGT; | |
0fadb059 JK |
1677 | ipgr1 = DEFAULT_82542_TIPG_IPGR1; |
1678 | ipgr2 = DEFAULT_82542_TIPG_IPGR2; | |
1da177e4 | 1679 | break; |
87041639 JK |
1680 | case e1000_80003es2lan: |
1681 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; | |
1682 | ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; | |
1683 | break; | |
1da177e4 | 1684 | default: |
0fadb059 JK |
1685 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
1686 | ipgr2 = DEFAULT_82543_TIPG_IPGR2; | |
1687 | break; | |
1da177e4 | 1688 | } |
0fadb059 JK |
1689 | tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; |
1690 | tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; | |
581d708e | 1691 | E1000_WRITE_REG(hw, TIPG, tipg); |
1da177e4 LT |
1692 | |
1693 | /* Set the Tx Interrupt Delay register */ | |
1694 | ||
581d708e MC |
1695 | E1000_WRITE_REG(hw, TIDV, adapter->tx_int_delay); |
1696 | if (hw->mac_type >= e1000_82540) | |
1697 | E1000_WRITE_REG(hw, TADV, adapter->tx_abs_int_delay); | |
1da177e4 LT |
1698 | |
1699 | /* Program the Transmit Control Register */ | |
1700 | ||
581d708e | 1701 | tctl = E1000_READ_REG(hw, TCTL); |
1da177e4 | 1702 | tctl &= ~E1000_TCTL_CT; |
7e6c9861 | 1703 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
1da177e4 LT |
1704 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
1705 | ||
2ae76d98 MC |
1706 | if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) { |
1707 | tarc = E1000_READ_REG(hw, TARC0); | |
90fb5135 AK |
1708 | /* set the speed mode bit, we'll clear it if we're not at |
1709 | * gigabit link later */ | |
09ae3e88 | 1710 | tarc |= (1 << 21); |
2ae76d98 | 1711 | E1000_WRITE_REG(hw, TARC0, tarc); |
87041639 JK |
1712 | } else if (hw->mac_type == e1000_80003es2lan) { |
1713 | tarc = E1000_READ_REG(hw, TARC0); | |
1714 | tarc |= 1; | |
87041639 JK |
1715 | E1000_WRITE_REG(hw, TARC0, tarc); |
1716 | tarc = E1000_READ_REG(hw, TARC1); | |
1717 | tarc |= 1; | |
1718 | E1000_WRITE_REG(hw, TARC1, tarc); | |
2ae76d98 MC |
1719 | } |
1720 | ||
581d708e | 1721 | e1000_config_collision_dist(hw); |
1da177e4 LT |
1722 | |
1723 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
6a042dab JB |
1724 | adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; |
1725 | ||
1726 | /* only set IDE if we are delaying interrupts using the timers */ | |
1727 | if (adapter->tx_int_delay) | |
1728 | adapter->txd_cmd |= E1000_TXD_CMD_IDE; | |
1da177e4 | 1729 | |
581d708e | 1730 | if (hw->mac_type < e1000_82543) |
1da177e4 LT |
1731 | adapter->txd_cmd |= E1000_TXD_CMD_RPS; |
1732 | else | |
1733 | adapter->txd_cmd |= E1000_TXD_CMD_RS; | |
1734 | ||
1735 | /* Cache if we're 82544 running in PCI-X because we'll | |
1736 | * need this to apply a workaround later in the send path. */ | |
581d708e MC |
1737 | if (hw->mac_type == e1000_82544 && |
1738 | hw->bus_type == e1000_bus_type_pcix) | |
1da177e4 | 1739 | adapter->pcix_82544 = 1; |
7e6c9861 JK |
1740 | |
1741 | E1000_WRITE_REG(hw, TCTL, tctl); | |
1742 | ||
1da177e4 LT |
1743 | } |
1744 | ||
1745 | /** | |
1746 | * e1000_setup_rx_resources - allocate Rx resources (Descriptors) | |
1747 | * @adapter: board private structure | |
581d708e | 1748 | * @rxdr: rx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1749 | * |
1750 | * Returns 0 on success, negative on failure | |
1751 | **/ | |
1752 | ||
3ad2cc67 | 1753 | static int |
581d708e MC |
1754 | e1000_setup_rx_resources(struct e1000_adapter *adapter, |
1755 | struct e1000_rx_ring *rxdr) | |
1da177e4 | 1756 | { |
1da177e4 | 1757 | struct pci_dev *pdev = adapter->pdev; |
2d7edb92 | 1758 | int size, desc_len; |
1da177e4 LT |
1759 | |
1760 | size = sizeof(struct e1000_buffer) * rxdr->count; | |
cd94dd0b | 1761 | rxdr->buffer_info = vmalloc(size); |
581d708e | 1762 | if (!rxdr->buffer_info) { |
2648345f MC |
1763 | DPRINTK(PROBE, ERR, |
1764 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1da177e4 LT |
1765 | return -ENOMEM; |
1766 | } | |
1767 | memset(rxdr->buffer_info, 0, size); | |
1768 | ||
1c7e5b12 YB |
1769 | rxdr->ps_page = kcalloc(rxdr->count, sizeof(struct e1000_ps_page), |
1770 | GFP_KERNEL); | |
96838a40 | 1771 | if (!rxdr->ps_page) { |
2d7edb92 MC |
1772 | vfree(rxdr->buffer_info); |
1773 | DPRINTK(PROBE, ERR, | |
1774 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1775 | return -ENOMEM; | |
1776 | } | |
2d7edb92 | 1777 | |
1c7e5b12 YB |
1778 | rxdr->ps_page_dma = kcalloc(rxdr->count, |
1779 | sizeof(struct e1000_ps_page_dma), | |
1780 | GFP_KERNEL); | |
96838a40 | 1781 | if (!rxdr->ps_page_dma) { |
2d7edb92 MC |
1782 | vfree(rxdr->buffer_info); |
1783 | kfree(rxdr->ps_page); | |
1784 | DPRINTK(PROBE, ERR, | |
1785 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1786 | return -ENOMEM; | |
1787 | } | |
2d7edb92 | 1788 | |
96838a40 | 1789 | if (adapter->hw.mac_type <= e1000_82547_rev_2) |
2d7edb92 MC |
1790 | desc_len = sizeof(struct e1000_rx_desc); |
1791 | else | |
1792 | desc_len = sizeof(union e1000_rx_desc_packet_split); | |
1793 | ||
1da177e4 LT |
1794 | /* Round up to nearest 4K */ |
1795 | ||
2d7edb92 | 1796 | rxdr->size = rxdr->count * desc_len; |
9099cfb9 | 1797 | rxdr->size = ALIGN(rxdr->size, 4096); |
1da177e4 LT |
1798 | |
1799 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); | |
1800 | ||
581d708e MC |
1801 | if (!rxdr->desc) { |
1802 | DPRINTK(PROBE, ERR, | |
1803 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1da177e4 | 1804 | setup_rx_desc_die: |
1da177e4 | 1805 | vfree(rxdr->buffer_info); |
2d7edb92 MC |
1806 | kfree(rxdr->ps_page); |
1807 | kfree(rxdr->ps_page_dma); | |
1da177e4 LT |
1808 | return -ENOMEM; |
1809 | } | |
1810 | ||
2648345f | 1811 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1812 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
1813 | void *olddesc = rxdr->desc; | |
1814 | dma_addr_t olddma = rxdr->dma; | |
2648345f MC |
1815 | DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes " |
1816 | "at %p\n", rxdr->size, rxdr->desc); | |
1817 | /* Try again, without freeing the previous */ | |
1da177e4 | 1818 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); |
2648345f | 1819 | /* Failed allocation, critical failure */ |
581d708e | 1820 | if (!rxdr->desc) { |
1da177e4 | 1821 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
581d708e MC |
1822 | DPRINTK(PROBE, ERR, |
1823 | "Unable to allocate memory " | |
1824 | "for the receive descriptor ring\n"); | |
1da177e4 LT |
1825 | goto setup_rx_desc_die; |
1826 | } | |
1827 | ||
1828 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { | |
1829 | /* give up */ | |
2648345f MC |
1830 | pci_free_consistent(pdev, rxdr->size, rxdr->desc, |
1831 | rxdr->dma); | |
1da177e4 | 1832 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
2648345f MC |
1833 | DPRINTK(PROBE, ERR, |
1834 | "Unable to allocate aligned memory " | |
1835 | "for the receive descriptor ring\n"); | |
581d708e | 1836 | goto setup_rx_desc_die; |
1da177e4 | 1837 | } else { |
2648345f | 1838 | /* Free old allocation, new allocation was successful */ |
1da177e4 LT |
1839 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
1840 | } | |
1841 | } | |
1842 | memset(rxdr->desc, 0, rxdr->size); | |
1843 | ||
1844 | rxdr->next_to_clean = 0; | |
1845 | rxdr->next_to_use = 0; | |
1846 | ||
1847 | return 0; | |
1848 | } | |
1849 | ||
581d708e MC |
1850 | /** |
1851 | * e1000_setup_all_rx_resources - wrapper to allocate Rx resources | |
1852 | * (Descriptors) for all queues | |
1853 | * @adapter: board private structure | |
1854 | * | |
581d708e MC |
1855 | * Return 0 on success, negative on failure |
1856 | **/ | |
1857 | ||
1858 | int | |
1859 | e1000_setup_all_rx_resources(struct e1000_adapter *adapter) | |
1860 | { | |
1861 | int i, err = 0; | |
1862 | ||
f56799ea | 1863 | for (i = 0; i < adapter->num_rx_queues; i++) { |
581d708e MC |
1864 | err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
1865 | if (err) { | |
1866 | DPRINTK(PROBE, ERR, | |
1867 | "Allocation for Rx Queue %u failed\n", i); | |
3fbbc72e VA |
1868 | for (i-- ; i >= 0; i--) |
1869 | e1000_free_rx_resources(adapter, | |
1870 | &adapter->rx_ring[i]); | |
581d708e MC |
1871 | break; |
1872 | } | |
1873 | } | |
1874 | ||
1875 | return err; | |
1876 | } | |
1877 | ||
1da177e4 | 1878 | /** |
2648345f | 1879 | * e1000_setup_rctl - configure the receive control registers |
1da177e4 LT |
1880 | * @adapter: Board private structure |
1881 | **/ | |
e4c811c9 MC |
1882 | #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ |
1883 | (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) | |
1da177e4 LT |
1884 | static void |
1885 | e1000_setup_rctl(struct e1000_adapter *adapter) | |
1886 | { | |
2d7edb92 MC |
1887 | uint32_t rctl, rfctl; |
1888 | uint32_t psrctl = 0; | |
35ec56bb | 1889 | #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT |
e4c811c9 MC |
1890 | uint32_t pages = 0; |
1891 | #endif | |
1da177e4 LT |
1892 | |
1893 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
1894 | ||
1895 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
1896 | ||
1897 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | | |
1898 | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | | |
1899 | (adapter->hw.mc_filter_type << E1000_RCTL_MO_SHIFT); | |
1900 | ||
0fadb059 | 1901 | if (adapter->hw.tbi_compatibility_on == 1) |
1da177e4 LT |
1902 | rctl |= E1000_RCTL_SBP; |
1903 | else | |
1904 | rctl &= ~E1000_RCTL_SBP; | |
1905 | ||
2d7edb92 MC |
1906 | if (adapter->netdev->mtu <= ETH_DATA_LEN) |
1907 | rctl &= ~E1000_RCTL_LPE; | |
1908 | else | |
1909 | rctl |= E1000_RCTL_LPE; | |
1910 | ||
1da177e4 | 1911 | /* Setup buffer sizes */ |
9e2feace AK |
1912 | rctl &= ~E1000_RCTL_SZ_4096; |
1913 | rctl |= E1000_RCTL_BSEX; | |
1914 | switch (adapter->rx_buffer_len) { | |
1915 | case E1000_RXBUFFER_256: | |
1916 | rctl |= E1000_RCTL_SZ_256; | |
1917 | rctl &= ~E1000_RCTL_BSEX; | |
1918 | break; | |
1919 | case E1000_RXBUFFER_512: | |
1920 | rctl |= E1000_RCTL_SZ_512; | |
1921 | rctl &= ~E1000_RCTL_BSEX; | |
1922 | break; | |
1923 | case E1000_RXBUFFER_1024: | |
1924 | rctl |= E1000_RCTL_SZ_1024; | |
1925 | rctl &= ~E1000_RCTL_BSEX; | |
1926 | break; | |
a1415ee6 JK |
1927 | case E1000_RXBUFFER_2048: |
1928 | default: | |
1929 | rctl |= E1000_RCTL_SZ_2048; | |
1930 | rctl &= ~E1000_RCTL_BSEX; | |
1931 | break; | |
1932 | case E1000_RXBUFFER_4096: | |
1933 | rctl |= E1000_RCTL_SZ_4096; | |
1934 | break; | |
1935 | case E1000_RXBUFFER_8192: | |
1936 | rctl |= E1000_RCTL_SZ_8192; | |
1937 | break; | |
1938 | case E1000_RXBUFFER_16384: | |
1939 | rctl |= E1000_RCTL_SZ_16384; | |
1940 | break; | |
2d7edb92 MC |
1941 | } |
1942 | ||
35ec56bb | 1943 | #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT |
2d7edb92 MC |
1944 | /* 82571 and greater support packet-split where the protocol |
1945 | * header is placed in skb->data and the packet data is | |
1946 | * placed in pages hanging off of skb_shinfo(skb)->nr_frags. | |
1947 | * In the case of a non-split, skb->data is linearly filled, | |
1948 | * followed by the page buffers. Therefore, skb->data is | |
1949 | * sized to hold the largest protocol header. | |
1950 | */ | |
e64d7d02 JB |
1951 | /* allocations using alloc_page take too long for regular MTU |
1952 | * so only enable packet split for jumbo frames */ | |
e4c811c9 | 1953 | pages = PAGE_USE_COUNT(adapter->netdev->mtu); |
e64d7d02 JB |
1954 | if ((adapter->hw.mac_type >= e1000_82571) && (pages <= 3) && |
1955 | PAGE_SIZE <= 16384 && (rctl & E1000_RCTL_LPE)) | |
e4c811c9 MC |
1956 | adapter->rx_ps_pages = pages; |
1957 | else | |
1958 | adapter->rx_ps_pages = 0; | |
2d7edb92 | 1959 | #endif |
e4c811c9 | 1960 | if (adapter->rx_ps_pages) { |
2d7edb92 MC |
1961 | /* Configure extra packet-split registers */ |
1962 | rfctl = E1000_READ_REG(&adapter->hw, RFCTL); | |
1963 | rfctl |= E1000_RFCTL_EXTEN; | |
87ca4e5b AK |
1964 | /* disable packet split support for IPv6 extension headers, |
1965 | * because some malformed IPv6 headers can hang the RX */ | |
1966 | rfctl |= (E1000_RFCTL_IPV6_EX_DIS | | |
1967 | E1000_RFCTL_NEW_IPV6_EXT_DIS); | |
1968 | ||
2d7edb92 MC |
1969 | E1000_WRITE_REG(&adapter->hw, RFCTL, rfctl); |
1970 | ||
7dfee0cb | 1971 | rctl |= E1000_RCTL_DTYP_PS; |
96838a40 | 1972 | |
2d7edb92 MC |
1973 | psrctl |= adapter->rx_ps_bsize0 >> |
1974 | E1000_PSRCTL_BSIZE0_SHIFT; | |
e4c811c9 MC |
1975 | |
1976 | switch (adapter->rx_ps_pages) { | |
1977 | case 3: | |
1978 | psrctl |= PAGE_SIZE << | |
1979 | E1000_PSRCTL_BSIZE3_SHIFT; | |
1980 | case 2: | |
1981 | psrctl |= PAGE_SIZE << | |
1982 | E1000_PSRCTL_BSIZE2_SHIFT; | |
1983 | case 1: | |
1984 | psrctl |= PAGE_SIZE >> | |
1985 | E1000_PSRCTL_BSIZE1_SHIFT; | |
1986 | break; | |
1987 | } | |
2d7edb92 MC |
1988 | |
1989 | E1000_WRITE_REG(&adapter->hw, PSRCTL, psrctl); | |
1da177e4 LT |
1990 | } |
1991 | ||
1992 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
1993 | } | |
1994 | ||
1995 | /** | |
1996 | * e1000_configure_rx - Configure 8254x Receive Unit after Reset | |
1997 | * @adapter: board private structure | |
1998 | * | |
1999 | * Configure the Rx unit of the MAC after a reset. | |
2000 | **/ | |
2001 | ||
2002 | static void | |
2003 | e1000_configure_rx(struct e1000_adapter *adapter) | |
2004 | { | |
581d708e MC |
2005 | uint64_t rdba; |
2006 | struct e1000_hw *hw = &adapter->hw; | |
2007 | uint32_t rdlen, rctl, rxcsum, ctrl_ext; | |
2d7edb92 | 2008 | |
e4c811c9 | 2009 | if (adapter->rx_ps_pages) { |
0f15a8fa | 2010 | /* this is a 32 byte descriptor */ |
581d708e | 2011 | rdlen = adapter->rx_ring[0].count * |
2d7edb92 MC |
2012 | sizeof(union e1000_rx_desc_packet_split); |
2013 | adapter->clean_rx = e1000_clean_rx_irq_ps; | |
2014 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; | |
2015 | } else { | |
581d708e MC |
2016 | rdlen = adapter->rx_ring[0].count * |
2017 | sizeof(struct e1000_rx_desc); | |
2d7edb92 MC |
2018 | adapter->clean_rx = e1000_clean_rx_irq; |
2019 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers; | |
2020 | } | |
1da177e4 LT |
2021 | |
2022 | /* disable receives while setting up the descriptors */ | |
581d708e MC |
2023 | rctl = E1000_READ_REG(hw, RCTL); |
2024 | E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); | |
1da177e4 LT |
2025 | |
2026 | /* set the Receive Delay Timer Register */ | |
581d708e | 2027 | E1000_WRITE_REG(hw, RDTR, adapter->rx_int_delay); |
1da177e4 | 2028 | |
581d708e MC |
2029 | if (hw->mac_type >= e1000_82540) { |
2030 | E1000_WRITE_REG(hw, RADV, adapter->rx_abs_int_delay); | |
835bb129 | 2031 | if (adapter->itr_setting != 0) |
581d708e | 2032 | E1000_WRITE_REG(hw, ITR, |
1da177e4 LT |
2033 | 1000000000 / (adapter->itr * 256)); |
2034 | } | |
2035 | ||
2ae76d98 | 2036 | if (hw->mac_type >= e1000_82571) { |
2ae76d98 | 2037 | ctrl_ext = E1000_READ_REG(hw, CTRL_EXT); |
1e613fd9 | 2038 | /* Reset delay timers after every interrupt */ |
6fc7a7ec | 2039 | ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR; |
1e613fd9 | 2040 | #ifdef CONFIG_E1000_NAPI |
835bb129 | 2041 | /* Auto-Mask interrupts upon ICR access */ |
1e613fd9 | 2042 | ctrl_ext |= E1000_CTRL_EXT_IAME; |
835bb129 | 2043 | E1000_WRITE_REG(hw, IAM, 0xffffffff); |
1e613fd9 | 2044 | #endif |
2ae76d98 MC |
2045 | E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); |
2046 | E1000_WRITE_FLUSH(hw); | |
2047 | } | |
2048 | ||
581d708e MC |
2049 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
2050 | * the Base and Length of the Rx Descriptor Ring */ | |
f56799ea | 2051 | switch (adapter->num_rx_queues) { |
24025e4e MC |
2052 | case 1: |
2053 | default: | |
581d708e | 2054 | rdba = adapter->rx_ring[0].dma; |
581d708e | 2055 | E1000_WRITE_REG(hw, RDLEN, rdlen); |
4ca213a6 AK |
2056 | E1000_WRITE_REG(hw, RDBAH, (rdba >> 32)); |
2057 | E1000_WRITE_REG(hw, RDBAL, (rdba & 0x00000000ffffffffULL)); | |
581d708e | 2058 | E1000_WRITE_REG(hw, RDT, 0); |
4ca213a6 | 2059 | E1000_WRITE_REG(hw, RDH, 0); |
6a951698 AK |
2060 | adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH); |
2061 | adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT); | |
581d708e | 2062 | break; |
24025e4e MC |
2063 | } |
2064 | ||
1da177e4 | 2065 | /* Enable 82543 Receive Checksum Offload for TCP and UDP */ |
581d708e MC |
2066 | if (hw->mac_type >= e1000_82543) { |
2067 | rxcsum = E1000_READ_REG(hw, RXCSUM); | |
96838a40 | 2068 | if (adapter->rx_csum == TRUE) { |
2d7edb92 MC |
2069 | rxcsum |= E1000_RXCSUM_TUOFL; |
2070 | ||
868d5309 | 2071 | /* Enable 82571 IPv4 payload checksum for UDP fragments |
2d7edb92 | 2072 | * Must be used in conjunction with packet-split. */ |
96838a40 JB |
2073 | if ((hw->mac_type >= e1000_82571) && |
2074 | (adapter->rx_ps_pages)) { | |
2d7edb92 MC |
2075 | rxcsum |= E1000_RXCSUM_IPPCSE; |
2076 | } | |
2077 | } else { | |
2078 | rxcsum &= ~E1000_RXCSUM_TUOFL; | |
2079 | /* don't need to clear IPPCSE as it defaults to 0 */ | |
2080 | } | |
581d708e | 2081 | E1000_WRITE_REG(hw, RXCSUM, rxcsum); |
1da177e4 LT |
2082 | } |
2083 | ||
21c4d5e0 AK |
2084 | /* enable early receives on 82573, only takes effect if using > 2048 |
2085 | * byte total frame size. for example only for jumbo frames */ | |
2086 | #define E1000_ERT_2048 0x100 | |
2087 | if (hw->mac_type == e1000_82573) | |
2088 | E1000_WRITE_REG(hw, ERT, E1000_ERT_2048); | |
2089 | ||
1da177e4 | 2090 | /* Enable Receives */ |
581d708e | 2091 | E1000_WRITE_REG(hw, RCTL, rctl); |
1da177e4 LT |
2092 | } |
2093 | ||
2094 | /** | |
581d708e | 2095 | * e1000_free_tx_resources - Free Tx Resources per Queue |
1da177e4 | 2096 | * @adapter: board private structure |
581d708e | 2097 | * @tx_ring: Tx descriptor ring for a specific queue |
1da177e4 LT |
2098 | * |
2099 | * Free all transmit software resources | |
2100 | **/ | |
2101 | ||
3ad2cc67 | 2102 | static void |
581d708e MC |
2103 | e1000_free_tx_resources(struct e1000_adapter *adapter, |
2104 | struct e1000_tx_ring *tx_ring) | |
1da177e4 LT |
2105 | { |
2106 | struct pci_dev *pdev = adapter->pdev; | |
2107 | ||
581d708e | 2108 | e1000_clean_tx_ring(adapter, tx_ring); |
1da177e4 | 2109 | |
581d708e MC |
2110 | vfree(tx_ring->buffer_info); |
2111 | tx_ring->buffer_info = NULL; | |
1da177e4 | 2112 | |
581d708e | 2113 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); |
1da177e4 | 2114 | |
581d708e MC |
2115 | tx_ring->desc = NULL; |
2116 | } | |
2117 | ||
2118 | /** | |
2119 | * e1000_free_all_tx_resources - Free Tx Resources for All Queues | |
2120 | * @adapter: board private structure | |
2121 | * | |
2122 | * Free all transmit software resources | |
2123 | **/ | |
2124 | ||
2125 | void | |
2126 | e1000_free_all_tx_resources(struct e1000_adapter *adapter) | |
2127 | { | |
2128 | int i; | |
2129 | ||
f56799ea | 2130 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 2131 | e1000_free_tx_resources(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
2132 | } |
2133 | ||
e619d523 | 2134 | static void |
1da177e4 LT |
2135 | e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, |
2136 | struct e1000_buffer *buffer_info) | |
2137 | { | |
96838a40 | 2138 | if (buffer_info->dma) { |
2648345f MC |
2139 | pci_unmap_page(adapter->pdev, |
2140 | buffer_info->dma, | |
2141 | buffer_info->length, | |
2142 | PCI_DMA_TODEVICE); | |
a9ebadd6 | 2143 | buffer_info->dma = 0; |
1da177e4 | 2144 | } |
a9ebadd6 | 2145 | if (buffer_info->skb) { |
1da177e4 | 2146 | dev_kfree_skb_any(buffer_info->skb); |
a9ebadd6 JB |
2147 | buffer_info->skb = NULL; |
2148 | } | |
2149 | /* buffer_info must be completely set up in the transmit path */ | |
1da177e4 LT |
2150 | } |
2151 | ||
2152 | /** | |
2153 | * e1000_clean_tx_ring - Free Tx Buffers | |
2154 | * @adapter: board private structure | |
581d708e | 2155 | * @tx_ring: ring to be cleaned |
1da177e4 LT |
2156 | **/ |
2157 | ||
2158 | static void | |
581d708e MC |
2159 | e1000_clean_tx_ring(struct e1000_adapter *adapter, |
2160 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 2161 | { |
1da177e4 LT |
2162 | struct e1000_buffer *buffer_info; |
2163 | unsigned long size; | |
2164 | unsigned int i; | |
2165 | ||
2166 | /* Free all the Tx ring sk_buffs */ | |
2167 | ||
96838a40 | 2168 | for (i = 0; i < tx_ring->count; i++) { |
1da177e4 LT |
2169 | buffer_info = &tx_ring->buffer_info[i]; |
2170 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); | |
2171 | } | |
2172 | ||
2173 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
2174 | memset(tx_ring->buffer_info, 0, size); | |
2175 | ||
2176 | /* Zero out the descriptor ring */ | |
2177 | ||
2178 | memset(tx_ring->desc, 0, tx_ring->size); | |
2179 | ||
2180 | tx_ring->next_to_use = 0; | |
2181 | tx_ring->next_to_clean = 0; | |
fd803241 | 2182 | tx_ring->last_tx_tso = 0; |
1da177e4 | 2183 | |
581d708e MC |
2184 | writel(0, adapter->hw.hw_addr + tx_ring->tdh); |
2185 | writel(0, adapter->hw.hw_addr + tx_ring->tdt); | |
2186 | } | |
2187 | ||
2188 | /** | |
2189 | * e1000_clean_all_tx_rings - Free Tx Buffers for all queues | |
2190 | * @adapter: board private structure | |
2191 | **/ | |
2192 | ||
2193 | static void | |
2194 | e1000_clean_all_tx_rings(struct e1000_adapter *adapter) | |
2195 | { | |
2196 | int i; | |
2197 | ||
f56799ea | 2198 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 2199 | e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
2200 | } |
2201 | ||
2202 | /** | |
2203 | * e1000_free_rx_resources - Free Rx Resources | |
2204 | * @adapter: board private structure | |
581d708e | 2205 | * @rx_ring: ring to clean the resources from |
1da177e4 LT |
2206 | * |
2207 | * Free all receive software resources | |
2208 | **/ | |
2209 | ||
3ad2cc67 | 2210 | static void |
581d708e MC |
2211 | e1000_free_rx_resources(struct e1000_adapter *adapter, |
2212 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 2213 | { |
1da177e4 LT |
2214 | struct pci_dev *pdev = adapter->pdev; |
2215 | ||
581d708e | 2216 | e1000_clean_rx_ring(adapter, rx_ring); |
1da177e4 LT |
2217 | |
2218 | vfree(rx_ring->buffer_info); | |
2219 | rx_ring->buffer_info = NULL; | |
2d7edb92 MC |
2220 | kfree(rx_ring->ps_page); |
2221 | rx_ring->ps_page = NULL; | |
2222 | kfree(rx_ring->ps_page_dma); | |
2223 | rx_ring->ps_page_dma = NULL; | |
1da177e4 LT |
2224 | |
2225 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
2226 | ||
2227 | rx_ring->desc = NULL; | |
2228 | } | |
2229 | ||
2230 | /** | |
581d708e | 2231 | * e1000_free_all_rx_resources - Free Rx Resources for All Queues |
1da177e4 | 2232 | * @adapter: board private structure |
581d708e MC |
2233 | * |
2234 | * Free all receive software resources | |
2235 | **/ | |
2236 | ||
2237 | void | |
2238 | e1000_free_all_rx_resources(struct e1000_adapter *adapter) | |
2239 | { | |
2240 | int i; | |
2241 | ||
f56799ea | 2242 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e MC |
2243 | e1000_free_rx_resources(adapter, &adapter->rx_ring[i]); |
2244 | } | |
2245 | ||
2246 | /** | |
2247 | * e1000_clean_rx_ring - Free Rx Buffers per Queue | |
2248 | * @adapter: board private structure | |
2249 | * @rx_ring: ring to free buffers from | |
1da177e4 LT |
2250 | **/ |
2251 | ||
2252 | static void | |
581d708e MC |
2253 | e1000_clean_rx_ring(struct e1000_adapter *adapter, |
2254 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 2255 | { |
1da177e4 | 2256 | struct e1000_buffer *buffer_info; |
2d7edb92 MC |
2257 | struct e1000_ps_page *ps_page; |
2258 | struct e1000_ps_page_dma *ps_page_dma; | |
1da177e4 LT |
2259 | struct pci_dev *pdev = adapter->pdev; |
2260 | unsigned long size; | |
2d7edb92 | 2261 | unsigned int i, j; |
1da177e4 LT |
2262 | |
2263 | /* Free all the Rx ring sk_buffs */ | |
96838a40 | 2264 | for (i = 0; i < rx_ring->count; i++) { |
1da177e4 | 2265 | buffer_info = &rx_ring->buffer_info[i]; |
96838a40 | 2266 | if (buffer_info->skb) { |
1da177e4 LT |
2267 | pci_unmap_single(pdev, |
2268 | buffer_info->dma, | |
2269 | buffer_info->length, | |
2270 | PCI_DMA_FROMDEVICE); | |
2271 | ||
2272 | dev_kfree_skb(buffer_info->skb); | |
2273 | buffer_info->skb = NULL; | |
997f5cbd JK |
2274 | } |
2275 | ps_page = &rx_ring->ps_page[i]; | |
2276 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
2277 | for (j = 0; j < adapter->rx_ps_pages; j++) { | |
2278 | if (!ps_page->ps_page[j]) break; | |
2279 | pci_unmap_page(pdev, | |
2280 | ps_page_dma->ps_page_dma[j], | |
2281 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
2282 | ps_page_dma->ps_page_dma[j] = 0; | |
2283 | put_page(ps_page->ps_page[j]); | |
2284 | ps_page->ps_page[j] = NULL; | |
1da177e4 LT |
2285 | } |
2286 | } | |
2287 | ||
2288 | size = sizeof(struct e1000_buffer) * rx_ring->count; | |
2289 | memset(rx_ring->buffer_info, 0, size); | |
2d7edb92 MC |
2290 | size = sizeof(struct e1000_ps_page) * rx_ring->count; |
2291 | memset(rx_ring->ps_page, 0, size); | |
2292 | size = sizeof(struct e1000_ps_page_dma) * rx_ring->count; | |
2293 | memset(rx_ring->ps_page_dma, 0, size); | |
1da177e4 LT |
2294 | |
2295 | /* Zero out the descriptor ring */ | |
2296 | ||
2297 | memset(rx_ring->desc, 0, rx_ring->size); | |
2298 | ||
2299 | rx_ring->next_to_clean = 0; | |
2300 | rx_ring->next_to_use = 0; | |
2301 | ||
581d708e MC |
2302 | writel(0, adapter->hw.hw_addr + rx_ring->rdh); |
2303 | writel(0, adapter->hw.hw_addr + rx_ring->rdt); | |
2304 | } | |
2305 | ||
2306 | /** | |
2307 | * e1000_clean_all_rx_rings - Free Rx Buffers for all queues | |
2308 | * @adapter: board private structure | |
2309 | **/ | |
2310 | ||
2311 | static void | |
2312 | e1000_clean_all_rx_rings(struct e1000_adapter *adapter) | |
2313 | { | |
2314 | int i; | |
2315 | ||
f56799ea | 2316 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e | 2317 | e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]); |
1da177e4 LT |
2318 | } |
2319 | ||
2320 | /* The 82542 2.0 (revision 2) needs to have the receive unit in reset | |
2321 | * and memory write and invalidate disabled for certain operations | |
2322 | */ | |
2323 | static void | |
2324 | e1000_enter_82542_rst(struct e1000_adapter *adapter) | |
2325 | { | |
2326 | struct net_device *netdev = adapter->netdev; | |
2327 | uint32_t rctl; | |
2328 | ||
2329 | e1000_pci_clear_mwi(&adapter->hw); | |
2330 | ||
2331 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
2332 | rctl |= E1000_RCTL_RST; | |
2333 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2334 | E1000_WRITE_FLUSH(&adapter->hw); | |
2335 | mdelay(5); | |
2336 | ||
96838a40 | 2337 | if (netif_running(netdev)) |
581d708e | 2338 | e1000_clean_all_rx_rings(adapter); |
1da177e4 LT |
2339 | } |
2340 | ||
2341 | static void | |
2342 | e1000_leave_82542_rst(struct e1000_adapter *adapter) | |
2343 | { | |
2344 | struct net_device *netdev = adapter->netdev; | |
2345 | uint32_t rctl; | |
2346 | ||
2347 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
2348 | rctl &= ~E1000_RCTL_RST; | |
2349 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2350 | E1000_WRITE_FLUSH(&adapter->hw); | |
2351 | mdelay(5); | |
2352 | ||
96838a40 | 2353 | if (adapter->hw.pci_cmd_word & PCI_COMMAND_INVALIDATE) |
1da177e4 LT |
2354 | e1000_pci_set_mwi(&adapter->hw); |
2355 | ||
96838a40 | 2356 | if (netif_running(netdev)) { |
72d64a43 JK |
2357 | /* No need to loop, because 82542 supports only 1 queue */ |
2358 | struct e1000_rx_ring *ring = &adapter->rx_ring[0]; | |
7c4d3367 | 2359 | e1000_configure_rx(adapter); |
72d64a43 | 2360 | adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring)); |
1da177e4 LT |
2361 | } |
2362 | } | |
2363 | ||
2364 | /** | |
2365 | * e1000_set_mac - Change the Ethernet Address of the NIC | |
2366 | * @netdev: network interface device structure | |
2367 | * @p: pointer to an address structure | |
2368 | * | |
2369 | * Returns 0 on success, negative on failure | |
2370 | **/ | |
2371 | ||
2372 | static int | |
2373 | e1000_set_mac(struct net_device *netdev, void *p) | |
2374 | { | |
60490fe0 | 2375 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2376 | struct sockaddr *addr = p; |
2377 | ||
96838a40 | 2378 | if (!is_valid_ether_addr(addr->sa_data)) |
1da177e4 LT |
2379 | return -EADDRNOTAVAIL; |
2380 | ||
2381 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2382 | ||
96838a40 | 2383 | if (adapter->hw.mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2384 | e1000_enter_82542_rst(adapter); |
2385 | ||
2386 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
2387 | memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); | |
2388 | ||
2389 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0); | |
2390 | ||
868d5309 MC |
2391 | /* With 82571 controllers, LAA may be overwritten (with the default) |
2392 | * due to controller reset from the other port. */ | |
2393 | if (adapter->hw.mac_type == e1000_82571) { | |
2394 | /* activate the work around */ | |
2395 | adapter->hw.laa_is_present = 1; | |
2396 | ||
96838a40 JB |
2397 | /* Hold a copy of the LAA in RAR[14] This is done so that |
2398 | * between the time RAR[0] gets clobbered and the time it | |
2399 | * gets fixed (in e1000_watchdog), the actual LAA is in one | |
868d5309 | 2400 | * of the RARs and no incoming packets directed to this port |
96838a40 | 2401 | * are dropped. Eventaully the LAA will be in RAR[0] and |
868d5309 | 2402 | * RAR[14] */ |
96838a40 | 2403 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, |
868d5309 MC |
2404 | E1000_RAR_ENTRIES - 1); |
2405 | } | |
2406 | ||
96838a40 | 2407 | if (adapter->hw.mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2408 | e1000_leave_82542_rst(adapter); |
2409 | ||
2410 | return 0; | |
2411 | } | |
2412 | ||
2413 | /** | |
2414 | * e1000_set_multi - Multicast and Promiscuous mode set | |
2415 | * @netdev: network interface device structure | |
2416 | * | |
2417 | * The set_multi entry point is called whenever the multicast address | |
2418 | * list or the network interface flags are updated. This routine is | |
2419 | * responsible for configuring the hardware for proper multicast, | |
2420 | * promiscuous mode, and all-multi behavior. | |
2421 | **/ | |
2422 | ||
2423 | static void | |
2424 | e1000_set_multi(struct net_device *netdev) | |
2425 | { | |
60490fe0 | 2426 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2427 | struct e1000_hw *hw = &adapter->hw; |
2428 | struct dev_mc_list *mc_ptr; | |
2429 | uint32_t rctl; | |
2430 | uint32_t hash_value; | |
868d5309 | 2431 | int i, rar_entries = E1000_RAR_ENTRIES; |
cd94dd0b AK |
2432 | int mta_reg_count = (hw->mac_type == e1000_ich8lan) ? |
2433 | E1000_NUM_MTA_REGISTERS_ICH8LAN : | |
2434 | E1000_NUM_MTA_REGISTERS; | |
2435 | ||
2436 | if (adapter->hw.mac_type == e1000_ich8lan) | |
2437 | rar_entries = E1000_RAR_ENTRIES_ICH8LAN; | |
1da177e4 | 2438 | |
868d5309 MC |
2439 | /* reserve RAR[14] for LAA over-write work-around */ |
2440 | if (adapter->hw.mac_type == e1000_82571) | |
2441 | rar_entries--; | |
1da177e4 | 2442 | |
2648345f MC |
2443 | /* Check for Promiscuous and All Multicast modes */ |
2444 | ||
1da177e4 LT |
2445 | rctl = E1000_READ_REG(hw, RCTL); |
2446 | ||
96838a40 | 2447 | if (netdev->flags & IFF_PROMISC) { |
1da177e4 | 2448 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
96838a40 | 2449 | } else if (netdev->flags & IFF_ALLMULTI) { |
1da177e4 LT |
2450 | rctl |= E1000_RCTL_MPE; |
2451 | rctl &= ~E1000_RCTL_UPE; | |
2452 | } else { | |
2453 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); | |
2454 | } | |
2455 | ||
2456 | E1000_WRITE_REG(hw, RCTL, rctl); | |
2457 | ||
2458 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2459 | ||
96838a40 | 2460 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2461 | e1000_enter_82542_rst(adapter); |
2462 | ||
2463 | /* load the first 14 multicast address into the exact filters 1-14 | |
2464 | * RAR 0 is used for the station MAC adddress | |
2465 | * if there are not 14 addresses, go ahead and clear the filters | |
868d5309 | 2466 | * -- with 82571 controllers only 0-13 entries are filled here |
1da177e4 LT |
2467 | */ |
2468 | mc_ptr = netdev->mc_list; | |
2469 | ||
96838a40 | 2470 | for (i = 1; i < rar_entries; i++) { |
868d5309 | 2471 | if (mc_ptr) { |
1da177e4 LT |
2472 | e1000_rar_set(hw, mc_ptr->dmi_addr, i); |
2473 | mc_ptr = mc_ptr->next; | |
2474 | } else { | |
2475 | E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); | |
4ca213a6 | 2476 | E1000_WRITE_FLUSH(hw); |
1da177e4 | 2477 | E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); |
4ca213a6 | 2478 | E1000_WRITE_FLUSH(hw); |
1da177e4 LT |
2479 | } |
2480 | } | |
2481 | ||
2482 | /* clear the old settings from the multicast hash table */ | |
2483 | ||
cd94dd0b | 2484 | for (i = 0; i < mta_reg_count; i++) { |
1da177e4 | 2485 | E1000_WRITE_REG_ARRAY(hw, MTA, i, 0); |
4ca213a6 AK |
2486 | E1000_WRITE_FLUSH(hw); |
2487 | } | |
1da177e4 LT |
2488 | |
2489 | /* load any remaining addresses into the hash table */ | |
2490 | ||
96838a40 | 2491 | for (; mc_ptr; mc_ptr = mc_ptr->next) { |
1da177e4 LT |
2492 | hash_value = e1000_hash_mc_addr(hw, mc_ptr->dmi_addr); |
2493 | e1000_mta_set(hw, hash_value); | |
2494 | } | |
2495 | ||
96838a40 | 2496 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 | 2497 | e1000_leave_82542_rst(adapter); |
1da177e4 LT |
2498 | } |
2499 | ||
2500 | /* Need to wait a few seconds after link up to get diagnostic information from | |
2501 | * the phy */ | |
2502 | ||
2503 | static void | |
2504 | e1000_update_phy_info(unsigned long data) | |
2505 | { | |
2506 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
2507 | e1000_phy_get_info(&adapter->hw, &adapter->phy_info); | |
2508 | } | |
2509 | ||
2510 | /** | |
2511 | * e1000_82547_tx_fifo_stall - Timer Call-back | |
2512 | * @data: pointer to adapter cast into an unsigned long | |
2513 | **/ | |
2514 | ||
2515 | static void | |
2516 | e1000_82547_tx_fifo_stall(unsigned long data) | |
2517 | { | |
2518 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
2519 | struct net_device *netdev = adapter->netdev; | |
2520 | uint32_t tctl; | |
2521 | ||
96838a40 JB |
2522 | if (atomic_read(&adapter->tx_fifo_stall)) { |
2523 | if ((E1000_READ_REG(&adapter->hw, TDT) == | |
1da177e4 LT |
2524 | E1000_READ_REG(&adapter->hw, TDH)) && |
2525 | (E1000_READ_REG(&adapter->hw, TDFT) == | |
2526 | E1000_READ_REG(&adapter->hw, TDFH)) && | |
2527 | (E1000_READ_REG(&adapter->hw, TDFTS) == | |
2528 | E1000_READ_REG(&adapter->hw, TDFHS))) { | |
2529 | tctl = E1000_READ_REG(&adapter->hw, TCTL); | |
2530 | E1000_WRITE_REG(&adapter->hw, TCTL, | |
2531 | tctl & ~E1000_TCTL_EN); | |
2532 | E1000_WRITE_REG(&adapter->hw, TDFT, | |
2533 | adapter->tx_head_addr); | |
2534 | E1000_WRITE_REG(&adapter->hw, TDFH, | |
2535 | adapter->tx_head_addr); | |
2536 | E1000_WRITE_REG(&adapter->hw, TDFTS, | |
2537 | adapter->tx_head_addr); | |
2538 | E1000_WRITE_REG(&adapter->hw, TDFHS, | |
2539 | adapter->tx_head_addr); | |
2540 | E1000_WRITE_REG(&adapter->hw, TCTL, tctl); | |
2541 | E1000_WRITE_FLUSH(&adapter->hw); | |
2542 | ||
2543 | adapter->tx_fifo_head = 0; | |
2544 | atomic_set(&adapter->tx_fifo_stall, 0); | |
2545 | netif_wake_queue(netdev); | |
2546 | } else { | |
2547 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); | |
2548 | } | |
2549 | } | |
2550 | } | |
2551 | ||
2552 | /** | |
2553 | * e1000_watchdog - Timer Call-back | |
2554 | * @data: pointer to adapter cast into an unsigned long | |
2555 | **/ | |
2556 | static void | |
2557 | e1000_watchdog(unsigned long data) | |
2558 | { | |
2559 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
1da177e4 | 2560 | struct net_device *netdev = adapter->netdev; |
545c67c0 | 2561 | struct e1000_tx_ring *txdr = adapter->tx_ring; |
7e6c9861 | 2562 | uint32_t link, tctl; |
cd94dd0b AK |
2563 | int32_t ret_val; |
2564 | ||
2565 | ret_val = e1000_check_for_link(&adapter->hw); | |
2566 | if ((ret_val == E1000_ERR_PHY) && | |
2567 | (adapter->hw.phy_type == e1000_phy_igp_3) && | |
2568 | (E1000_READ_REG(&adapter->hw, CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) { | |
2569 | /* See e1000_kumeran_lock_loss_workaround() */ | |
2570 | DPRINTK(LINK, INFO, | |
2571 | "Gigabit has been disabled, downgrading speed\n"); | |
2572 | } | |
90fb5135 | 2573 | |
2d7edb92 MC |
2574 | if (adapter->hw.mac_type == e1000_82573) { |
2575 | e1000_enable_tx_pkt_filtering(&adapter->hw); | |
96838a40 | 2576 | if (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id) |
2d7edb92 | 2577 | e1000_update_mng_vlan(adapter); |
96838a40 | 2578 | } |
1da177e4 | 2579 | |
96838a40 | 2580 | if ((adapter->hw.media_type == e1000_media_type_internal_serdes) && |
1da177e4 LT |
2581 | !(E1000_READ_REG(&adapter->hw, TXCW) & E1000_TXCW_ANE)) |
2582 | link = !adapter->hw.serdes_link_down; | |
2583 | else | |
2584 | link = E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU; | |
2585 | ||
96838a40 JB |
2586 | if (link) { |
2587 | if (!netif_carrier_ok(netdev)) { | |
9669f53b | 2588 | uint32_t ctrl; |
fe7fe28e | 2589 | boolean_t txb2b = 1; |
1da177e4 LT |
2590 | e1000_get_speed_and_duplex(&adapter->hw, |
2591 | &adapter->link_speed, | |
2592 | &adapter->link_duplex); | |
2593 | ||
9669f53b AK |
2594 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); |
2595 | DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s, " | |
2596 | "Flow Control: %s\n", | |
2597 | adapter->link_speed, | |
2598 | adapter->link_duplex == FULL_DUPLEX ? | |
2599 | "Full Duplex" : "Half Duplex", | |
2600 | ((ctrl & E1000_CTRL_TFCE) && (ctrl & | |
2601 | E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl & | |
2602 | E1000_CTRL_RFCE) ? "RX" : ((ctrl & | |
2603 | E1000_CTRL_TFCE) ? "TX" : "None" ))); | |
1da177e4 | 2604 | |
7e6c9861 JK |
2605 | /* tweak tx_queue_len according to speed/duplex |
2606 | * and adjust the timeout factor */ | |
66a2b0a3 JK |
2607 | netdev->tx_queue_len = adapter->tx_queue_len; |
2608 | adapter->tx_timeout_factor = 1; | |
7e6c9861 JK |
2609 | switch (adapter->link_speed) { |
2610 | case SPEED_10: | |
fe7fe28e | 2611 | txb2b = 0; |
7e6c9861 JK |
2612 | netdev->tx_queue_len = 10; |
2613 | adapter->tx_timeout_factor = 8; | |
2614 | break; | |
2615 | case SPEED_100: | |
fe7fe28e | 2616 | txb2b = 0; |
7e6c9861 JK |
2617 | netdev->tx_queue_len = 100; |
2618 | /* maybe add some timeout factor ? */ | |
2619 | break; | |
2620 | } | |
2621 | ||
fe7fe28e | 2622 | if ((adapter->hw.mac_type == e1000_82571 || |
7e6c9861 | 2623 | adapter->hw.mac_type == e1000_82572) && |
fe7fe28e | 2624 | txb2b == 0) { |
7e6c9861 JK |
2625 | uint32_t tarc0; |
2626 | tarc0 = E1000_READ_REG(&adapter->hw, TARC0); | |
90fb5135 | 2627 | tarc0 &= ~(1 << 21); |
7e6c9861 JK |
2628 | E1000_WRITE_REG(&adapter->hw, TARC0, tarc0); |
2629 | } | |
90fb5135 | 2630 | |
7e6c9861 JK |
2631 | /* disable TSO for pcie and 10/100 speeds, to avoid |
2632 | * some hardware issues */ | |
2633 | if (!adapter->tso_force && | |
2634 | adapter->hw.bus_type == e1000_bus_type_pci_express){ | |
66a2b0a3 JK |
2635 | switch (adapter->link_speed) { |
2636 | case SPEED_10: | |
66a2b0a3 | 2637 | case SPEED_100: |
7e6c9861 JK |
2638 | DPRINTK(PROBE,INFO, |
2639 | "10/100 speed: disabling TSO\n"); | |
2640 | netdev->features &= ~NETIF_F_TSO; | |
87ca4e5b | 2641 | netdev->features &= ~NETIF_F_TSO6; |
7e6c9861 JK |
2642 | break; |
2643 | case SPEED_1000: | |
2644 | netdev->features |= NETIF_F_TSO; | |
87ca4e5b | 2645 | netdev->features |= NETIF_F_TSO6; |
7e6c9861 JK |
2646 | break; |
2647 | default: | |
2648 | /* oops */ | |
66a2b0a3 JK |
2649 | break; |
2650 | } | |
2651 | } | |
7e6c9861 JK |
2652 | |
2653 | /* enable transmits in the hardware, need to do this | |
2654 | * after setting TARC0 */ | |
2655 | tctl = E1000_READ_REG(&adapter->hw, TCTL); | |
2656 | tctl |= E1000_TCTL_EN; | |
2657 | E1000_WRITE_REG(&adapter->hw, TCTL, tctl); | |
66a2b0a3 | 2658 | |
1da177e4 LT |
2659 | netif_carrier_on(netdev); |
2660 | netif_wake_queue(netdev); | |
56e1393f | 2661 | mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ)); |
1da177e4 | 2662 | adapter->smartspeed = 0; |
bb8e3311 JG |
2663 | } else { |
2664 | /* make sure the receive unit is started */ | |
2665 | if (adapter->hw.rx_needs_kicking) { | |
2666 | struct e1000_hw *hw = &adapter->hw; | |
2667 | uint32_t rctl = E1000_READ_REG(hw, RCTL); | |
2668 | E1000_WRITE_REG(hw, RCTL, rctl | E1000_RCTL_EN); | |
2669 | } | |
1da177e4 LT |
2670 | } |
2671 | } else { | |
96838a40 | 2672 | if (netif_carrier_ok(netdev)) { |
1da177e4 LT |
2673 | adapter->link_speed = 0; |
2674 | adapter->link_duplex = 0; | |
2675 | DPRINTK(LINK, INFO, "NIC Link is Down\n"); | |
2676 | netif_carrier_off(netdev); | |
2677 | netif_stop_queue(netdev); | |
56e1393f | 2678 | mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ)); |
87041639 JK |
2679 | |
2680 | /* 80003ES2LAN workaround-- | |
2681 | * For packet buffer work-around on link down event; | |
2682 | * disable receives in the ISR and | |
2683 | * reset device here in the watchdog | |
2684 | */ | |
8fc897b0 | 2685 | if (adapter->hw.mac_type == e1000_80003es2lan) |
87041639 JK |
2686 | /* reset device */ |
2687 | schedule_work(&adapter->reset_task); | |
1da177e4 LT |
2688 | } |
2689 | ||
2690 | e1000_smartspeed(adapter); | |
2691 | } | |
2692 | ||
2693 | e1000_update_stats(adapter); | |
2694 | ||
2695 | adapter->hw.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; | |
2696 | adapter->tpt_old = adapter->stats.tpt; | |
2697 | adapter->hw.collision_delta = adapter->stats.colc - adapter->colc_old; | |
2698 | adapter->colc_old = adapter->stats.colc; | |
2699 | ||
2700 | adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; | |
2701 | adapter->gorcl_old = adapter->stats.gorcl; | |
2702 | adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; | |
2703 | adapter->gotcl_old = adapter->stats.gotcl; | |
2704 | ||
2705 | e1000_update_adaptive(&adapter->hw); | |
2706 | ||
f56799ea | 2707 | if (!netif_carrier_ok(netdev)) { |
581d708e | 2708 | if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { |
1da177e4 LT |
2709 | /* We've lost link, so the controller stops DMA, |
2710 | * but we've got queued Tx work that's never going | |
2711 | * to get done, so reset controller to flush Tx. | |
2712 | * (Do the reset outside of interrupt context). */ | |
87041639 JK |
2713 | adapter->tx_timeout_count++; |
2714 | schedule_work(&adapter->reset_task); | |
1da177e4 LT |
2715 | } |
2716 | } | |
2717 | ||
1da177e4 LT |
2718 | /* Cause software interrupt to ensure rx ring is cleaned */ |
2719 | E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_RXDMT0); | |
2720 | ||
2648345f | 2721 | /* Force detection of hung controller every watchdog period */ |
1da177e4 LT |
2722 | adapter->detect_tx_hung = TRUE; |
2723 | ||
96838a40 | 2724 | /* With 82571 controllers, LAA may be overwritten due to controller |
868d5309 MC |
2725 | * reset from the other port. Set the appropriate LAA in RAR[0] */ |
2726 | if (adapter->hw.mac_type == e1000_82571 && adapter->hw.laa_is_present) | |
2727 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0); | |
2728 | ||
1da177e4 | 2729 | /* Reset the timer */ |
56e1393f | 2730 | mod_timer(&adapter->watchdog_timer, round_jiffies(jiffies + 2 * HZ)); |
1da177e4 LT |
2731 | } |
2732 | ||
835bb129 JB |
2733 | enum latency_range { |
2734 | lowest_latency = 0, | |
2735 | low_latency = 1, | |
2736 | bulk_latency = 2, | |
2737 | latency_invalid = 255 | |
2738 | }; | |
2739 | ||
2740 | /** | |
2741 | * e1000_update_itr - update the dynamic ITR value based on statistics | |
2742 | * Stores a new ITR value based on packets and byte | |
2743 | * counts during the last interrupt. The advantage of per interrupt | |
2744 | * computation is faster updates and more accurate ITR for the current | |
2745 | * traffic pattern. Constants in this function were computed | |
2746 | * based on theoretical maximum wire speed and thresholds were set based | |
2747 | * on testing data as well as attempting to minimize response time | |
2748 | * while increasing bulk throughput. | |
2749 | * this functionality is controlled by the InterruptThrottleRate module | |
2750 | * parameter (see e1000_param.c) | |
2751 | * @adapter: pointer to adapter | |
2752 | * @itr_setting: current adapter->itr | |
2753 | * @packets: the number of packets during this measurement interval | |
2754 | * @bytes: the number of bytes during this measurement interval | |
2755 | **/ | |
2756 | static unsigned int e1000_update_itr(struct e1000_adapter *adapter, | |
2757 | uint16_t itr_setting, | |
2758 | int packets, | |
2759 | int bytes) | |
2760 | { | |
2761 | unsigned int retval = itr_setting; | |
2762 | struct e1000_hw *hw = &adapter->hw; | |
2763 | ||
2764 | if (unlikely(hw->mac_type < e1000_82540)) | |
2765 | goto update_itr_done; | |
2766 | ||
2767 | if (packets == 0) | |
2768 | goto update_itr_done; | |
2769 | ||
835bb129 JB |
2770 | switch (itr_setting) { |
2771 | case lowest_latency: | |
2b65326e JB |
2772 | /* jumbo frames get bulk treatment*/ |
2773 | if (bytes/packets > 8000) | |
2774 | retval = bulk_latency; | |
2775 | else if ((packets < 5) && (bytes > 512)) | |
835bb129 JB |
2776 | retval = low_latency; |
2777 | break; | |
2778 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
2779 | if (bytes > 10000) { | |
2b65326e JB |
2780 | /* jumbo frames need bulk latency setting */ |
2781 | if (bytes/packets > 8000) | |
2782 | retval = bulk_latency; | |
2783 | else if ((packets < 10) || ((bytes/packets) > 1200)) | |
835bb129 JB |
2784 | retval = bulk_latency; |
2785 | else if ((packets > 35)) | |
2786 | retval = lowest_latency; | |
2b65326e JB |
2787 | } else if (bytes/packets > 2000) |
2788 | retval = bulk_latency; | |
2789 | else if (packets <= 2 && bytes < 512) | |
835bb129 JB |
2790 | retval = lowest_latency; |
2791 | break; | |
2792 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
2793 | if (bytes > 25000) { | |
2794 | if (packets > 35) | |
2795 | retval = low_latency; | |
2b65326e JB |
2796 | } else if (bytes < 6000) { |
2797 | retval = low_latency; | |
835bb129 JB |
2798 | } |
2799 | break; | |
2800 | } | |
2801 | ||
2802 | update_itr_done: | |
2803 | return retval; | |
2804 | } | |
2805 | ||
2806 | static void e1000_set_itr(struct e1000_adapter *adapter) | |
2807 | { | |
2808 | struct e1000_hw *hw = &adapter->hw; | |
2809 | uint16_t current_itr; | |
2810 | uint32_t new_itr = adapter->itr; | |
2811 | ||
2812 | if (unlikely(hw->mac_type < e1000_82540)) | |
2813 | return; | |
2814 | ||
2815 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ | |
2816 | if (unlikely(adapter->link_speed != SPEED_1000)) { | |
2817 | current_itr = 0; | |
2818 | new_itr = 4000; | |
2819 | goto set_itr_now; | |
2820 | } | |
2821 | ||
2822 | adapter->tx_itr = e1000_update_itr(adapter, | |
2823 | adapter->tx_itr, | |
2824 | adapter->total_tx_packets, | |
2825 | adapter->total_tx_bytes); | |
2b65326e JB |
2826 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
2827 | if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) | |
2828 | adapter->tx_itr = low_latency; | |
2829 | ||
835bb129 JB |
2830 | adapter->rx_itr = e1000_update_itr(adapter, |
2831 | adapter->rx_itr, | |
2832 | adapter->total_rx_packets, | |
2833 | adapter->total_rx_bytes); | |
2b65326e JB |
2834 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
2835 | if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) | |
2836 | adapter->rx_itr = low_latency; | |
835bb129 JB |
2837 | |
2838 | current_itr = max(adapter->rx_itr, adapter->tx_itr); | |
2839 | ||
835bb129 JB |
2840 | switch (current_itr) { |
2841 | /* counts and packets in update_itr are dependent on these numbers */ | |
2842 | case lowest_latency: | |
2843 | new_itr = 70000; | |
2844 | break; | |
2845 | case low_latency: | |
2846 | new_itr = 20000; /* aka hwitr = ~200 */ | |
2847 | break; | |
2848 | case bulk_latency: | |
2849 | new_itr = 4000; | |
2850 | break; | |
2851 | default: | |
2852 | break; | |
2853 | } | |
2854 | ||
2855 | set_itr_now: | |
2856 | if (new_itr != adapter->itr) { | |
2857 | /* this attempts to bias the interrupt rate towards Bulk | |
2858 | * by adding intermediate steps when interrupt rate is | |
2859 | * increasing */ | |
2860 | new_itr = new_itr > adapter->itr ? | |
2861 | min(adapter->itr + (new_itr >> 2), new_itr) : | |
2862 | new_itr; | |
2863 | adapter->itr = new_itr; | |
2864 | E1000_WRITE_REG(hw, ITR, 1000000000 / (new_itr * 256)); | |
2865 | } | |
2866 | ||
2867 | return; | |
2868 | } | |
2869 | ||
1da177e4 LT |
2870 | #define E1000_TX_FLAGS_CSUM 0x00000001 |
2871 | #define E1000_TX_FLAGS_VLAN 0x00000002 | |
2872 | #define E1000_TX_FLAGS_TSO 0x00000004 | |
2d7edb92 | 2873 | #define E1000_TX_FLAGS_IPV4 0x00000008 |
1da177e4 LT |
2874 | #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
2875 | #define E1000_TX_FLAGS_VLAN_SHIFT 16 | |
2876 | ||
e619d523 | 2877 | static int |
581d708e MC |
2878 | e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2879 | struct sk_buff *skb) | |
1da177e4 | 2880 | { |
1da177e4 | 2881 | struct e1000_context_desc *context_desc; |
545c67c0 | 2882 | struct e1000_buffer *buffer_info; |
1da177e4 LT |
2883 | unsigned int i; |
2884 | uint32_t cmd_length = 0; | |
2d7edb92 | 2885 | uint16_t ipcse = 0, tucse, mss; |
1da177e4 LT |
2886 | uint8_t ipcss, ipcso, tucss, tucso, hdr_len; |
2887 | int err; | |
2888 | ||
89114afd | 2889 | if (skb_is_gso(skb)) { |
1da177e4 LT |
2890 | if (skb_header_cloned(skb)) { |
2891 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
2892 | if (err) | |
2893 | return err; | |
2894 | } | |
2895 | ||
ab6a5bb6 | 2896 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
7967168c | 2897 | mss = skb_shinfo(skb)->gso_size; |
60828236 | 2898 | if (skb->protocol == htons(ETH_P_IP)) { |
eddc9ec5 ACM |
2899 | struct iphdr *iph = ip_hdr(skb); |
2900 | iph->tot_len = 0; | |
2901 | iph->check = 0; | |
aa8223c7 ACM |
2902 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
2903 | iph->daddr, 0, | |
2904 | IPPROTO_TCP, | |
2905 | 0); | |
2d7edb92 | 2906 | cmd_length = E1000_TXD_CMD_IP; |
ea2ae17d | 2907 | ipcse = skb_transport_offset(skb) - 1; |
e15fdd03 | 2908 | } else if (skb->protocol == htons(ETH_P_IPV6)) { |
0660e03f | 2909 | ipv6_hdr(skb)->payload_len = 0; |
aa8223c7 | 2910 | tcp_hdr(skb)->check = |
0660e03f ACM |
2911 | ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
2912 | &ipv6_hdr(skb)->daddr, | |
2913 | 0, IPPROTO_TCP, 0); | |
2d7edb92 | 2914 | ipcse = 0; |
2d7edb92 | 2915 | } |
bbe735e4 | 2916 | ipcss = skb_network_offset(skb); |
eddc9ec5 | 2917 | ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; |
ea2ae17d | 2918 | tucss = skb_transport_offset(skb); |
aa8223c7 | 2919 | tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
1da177e4 LT |
2920 | tucse = 0; |
2921 | ||
2922 | cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | | |
2d7edb92 | 2923 | E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
1da177e4 | 2924 | |
581d708e MC |
2925 | i = tx_ring->next_to_use; |
2926 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
545c67c0 | 2927 | buffer_info = &tx_ring->buffer_info[i]; |
1da177e4 LT |
2928 | |
2929 | context_desc->lower_setup.ip_fields.ipcss = ipcss; | |
2930 | context_desc->lower_setup.ip_fields.ipcso = ipcso; | |
2931 | context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); | |
2932 | context_desc->upper_setup.tcp_fields.tucss = tucss; | |
2933 | context_desc->upper_setup.tcp_fields.tucso = tucso; | |
2934 | context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); | |
2935 | context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); | |
2936 | context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; | |
2937 | context_desc->cmd_and_length = cpu_to_le32(cmd_length); | |
2938 | ||
545c67c0 | 2939 | buffer_info->time_stamp = jiffies; |
a9ebadd6 | 2940 | buffer_info->next_to_watch = i; |
545c67c0 | 2941 | |
581d708e MC |
2942 | if (++i == tx_ring->count) i = 0; |
2943 | tx_ring->next_to_use = i; | |
1da177e4 | 2944 | |
8241e35e | 2945 | return TRUE; |
1da177e4 | 2946 | } |
8241e35e | 2947 | return FALSE; |
1da177e4 LT |
2948 | } |
2949 | ||
e619d523 | 2950 | static boolean_t |
581d708e MC |
2951 | e1000_tx_csum(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2952 | struct sk_buff *skb) | |
1da177e4 LT |
2953 | { |
2954 | struct e1000_context_desc *context_desc; | |
545c67c0 | 2955 | struct e1000_buffer *buffer_info; |
1da177e4 LT |
2956 | unsigned int i; |
2957 | uint8_t css; | |
2958 | ||
84fa7933 | 2959 | if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { |
ea2ae17d | 2960 | css = skb_transport_offset(skb); |
1da177e4 | 2961 | |
581d708e | 2962 | i = tx_ring->next_to_use; |
545c67c0 | 2963 | buffer_info = &tx_ring->buffer_info[i]; |
581d708e | 2964 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
1da177e4 | 2965 | |
f6c57baf | 2966 | context_desc->lower_setup.ip_config = 0; |
1da177e4 | 2967 | context_desc->upper_setup.tcp_fields.tucss = css; |
628592cc HX |
2968 | context_desc->upper_setup.tcp_fields.tucso = |
2969 | css + skb->csum_offset; | |
1da177e4 LT |
2970 | context_desc->upper_setup.tcp_fields.tucse = 0; |
2971 | context_desc->tcp_seg_setup.data = 0; | |
2972 | context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT); | |
2973 | ||
545c67c0 | 2974 | buffer_info->time_stamp = jiffies; |
a9ebadd6 | 2975 | buffer_info->next_to_watch = i; |
545c67c0 | 2976 | |
581d708e MC |
2977 | if (unlikely(++i == tx_ring->count)) i = 0; |
2978 | tx_ring->next_to_use = i; | |
1da177e4 LT |
2979 | |
2980 | return TRUE; | |
2981 | } | |
2982 | ||
2983 | return FALSE; | |
2984 | } | |
2985 | ||
2986 | #define E1000_MAX_TXD_PWR 12 | |
2987 | #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) | |
2988 | ||
e619d523 | 2989 | static int |
581d708e MC |
2990 | e1000_tx_map(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2991 | struct sk_buff *skb, unsigned int first, unsigned int max_per_txd, | |
2992 | unsigned int nr_frags, unsigned int mss) | |
1da177e4 | 2993 | { |
1da177e4 LT |
2994 | struct e1000_buffer *buffer_info; |
2995 | unsigned int len = skb->len; | |
2996 | unsigned int offset = 0, size, count = 0, i; | |
2997 | unsigned int f; | |
2998 | len -= skb->data_len; | |
2999 | ||
3000 | i = tx_ring->next_to_use; | |
3001 | ||
96838a40 | 3002 | while (len) { |
1da177e4 LT |
3003 | buffer_info = &tx_ring->buffer_info[i]; |
3004 | size = min(len, max_per_txd); | |
fd803241 JK |
3005 | /* Workaround for Controller erratum -- |
3006 | * descriptor for non-tso packet in a linear SKB that follows a | |
3007 | * tso gets written back prematurely before the data is fully | |
0f15a8fa | 3008 | * DMA'd to the controller */ |
fd803241 | 3009 | if (!skb->data_len && tx_ring->last_tx_tso && |
89114afd | 3010 | !skb_is_gso(skb)) { |
fd803241 JK |
3011 | tx_ring->last_tx_tso = 0; |
3012 | size -= 4; | |
3013 | } | |
3014 | ||
1da177e4 LT |
3015 | /* Workaround for premature desc write-backs |
3016 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 3017 | if (unlikely(mss && !nr_frags && size == len && size > 8)) |
1da177e4 | 3018 | size -= 4; |
97338bde MC |
3019 | /* work-around for errata 10 and it applies |
3020 | * to all controllers in PCI-X mode | |
3021 | * The fix is to make sure that the first descriptor of a | |
3022 | * packet is smaller than 2048 - 16 - 16 (or 2016) bytes | |
3023 | */ | |
96838a40 | 3024 | if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && |
97338bde MC |
3025 | (size > 2015) && count == 0)) |
3026 | size = 2015; | |
96838a40 | 3027 | |
1da177e4 LT |
3028 | /* Workaround for potential 82544 hang in PCI-X. Avoid |
3029 | * terminating buffers within evenly-aligned dwords. */ | |
96838a40 | 3030 | if (unlikely(adapter->pcix_82544 && |
1da177e4 LT |
3031 | !((unsigned long)(skb->data + offset + size - 1) & 4) && |
3032 | size > 4)) | |
3033 | size -= 4; | |
3034 | ||
3035 | buffer_info->length = size; | |
3036 | buffer_info->dma = | |
3037 | pci_map_single(adapter->pdev, | |
3038 | skb->data + offset, | |
3039 | size, | |
3040 | PCI_DMA_TODEVICE); | |
3041 | buffer_info->time_stamp = jiffies; | |
a9ebadd6 | 3042 | buffer_info->next_to_watch = i; |
1da177e4 LT |
3043 | |
3044 | len -= size; | |
3045 | offset += size; | |
3046 | count++; | |
96838a40 | 3047 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
3048 | } |
3049 | ||
96838a40 | 3050 | for (f = 0; f < nr_frags; f++) { |
1da177e4 LT |
3051 | struct skb_frag_struct *frag; |
3052 | ||
3053 | frag = &skb_shinfo(skb)->frags[f]; | |
3054 | len = frag->size; | |
3055 | offset = frag->page_offset; | |
3056 | ||
96838a40 | 3057 | while (len) { |
1da177e4 LT |
3058 | buffer_info = &tx_ring->buffer_info[i]; |
3059 | size = min(len, max_per_txd); | |
1da177e4 LT |
3060 | /* Workaround for premature desc write-backs |
3061 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 3062 | if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) |
1da177e4 | 3063 | size -= 4; |
1da177e4 LT |
3064 | /* Workaround for potential 82544 hang in PCI-X. |
3065 | * Avoid terminating buffers within evenly-aligned | |
3066 | * dwords. */ | |
96838a40 | 3067 | if (unlikely(adapter->pcix_82544 && |
1da177e4 LT |
3068 | !((unsigned long)(frag->page+offset+size-1) & 4) && |
3069 | size > 4)) | |
3070 | size -= 4; | |
3071 | ||
3072 | buffer_info->length = size; | |
3073 | buffer_info->dma = | |
3074 | pci_map_page(adapter->pdev, | |
3075 | frag->page, | |
3076 | offset, | |
3077 | size, | |
3078 | PCI_DMA_TODEVICE); | |
3079 | buffer_info->time_stamp = jiffies; | |
a9ebadd6 | 3080 | buffer_info->next_to_watch = i; |
1da177e4 LT |
3081 | |
3082 | len -= size; | |
3083 | offset += size; | |
3084 | count++; | |
96838a40 | 3085 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
3086 | } |
3087 | } | |
3088 | ||
3089 | i = (i == 0) ? tx_ring->count - 1 : i - 1; | |
3090 | tx_ring->buffer_info[i].skb = skb; | |
3091 | tx_ring->buffer_info[first].next_to_watch = i; | |
3092 | ||
3093 | return count; | |
3094 | } | |
3095 | ||
e619d523 | 3096 | static void |
581d708e MC |
3097 | e1000_tx_queue(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
3098 | int tx_flags, int count) | |
1da177e4 | 3099 | { |
1da177e4 LT |
3100 | struct e1000_tx_desc *tx_desc = NULL; |
3101 | struct e1000_buffer *buffer_info; | |
3102 | uint32_t txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; | |
3103 | unsigned int i; | |
3104 | ||
96838a40 | 3105 | if (likely(tx_flags & E1000_TX_FLAGS_TSO)) { |
1da177e4 LT |
3106 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
3107 | E1000_TXD_CMD_TSE; | |
2d7edb92 MC |
3108 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
3109 | ||
96838a40 | 3110 | if (likely(tx_flags & E1000_TX_FLAGS_IPV4)) |
2d7edb92 | 3111 | txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
1da177e4 LT |
3112 | } |
3113 | ||
96838a40 | 3114 | if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) { |
1da177e4 LT |
3115 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
3116 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
3117 | } | |
3118 | ||
96838a40 | 3119 | if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { |
1da177e4 LT |
3120 | txd_lower |= E1000_TXD_CMD_VLE; |
3121 | txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); | |
3122 | } | |
3123 | ||
3124 | i = tx_ring->next_to_use; | |
3125 | ||
96838a40 | 3126 | while (count--) { |
1da177e4 LT |
3127 | buffer_info = &tx_ring->buffer_info[i]; |
3128 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
3129 | tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
3130 | tx_desc->lower.data = | |
3131 | cpu_to_le32(txd_lower | buffer_info->length); | |
3132 | tx_desc->upper.data = cpu_to_le32(txd_upper); | |
96838a40 | 3133 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
3134 | } |
3135 | ||
3136 | tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); | |
3137 | ||
3138 | /* Force memory writes to complete before letting h/w | |
3139 | * know there are new descriptors to fetch. (Only | |
3140 | * applicable for weak-ordered memory model archs, | |
3141 | * such as IA-64). */ | |
3142 | wmb(); | |
3143 | ||
3144 | tx_ring->next_to_use = i; | |
581d708e | 3145 | writel(i, adapter->hw.hw_addr + tx_ring->tdt); |
2ce9047f JB |
3146 | /* we need this if more than one processor can write to our tail |
3147 | * at a time, it syncronizes IO on IA64/Altix systems */ | |
3148 | mmiowb(); | |
1da177e4 LT |
3149 | } |
3150 | ||
3151 | /** | |
3152 | * 82547 workaround to avoid controller hang in half-duplex environment. | |
3153 | * The workaround is to avoid queuing a large packet that would span | |
3154 | * the internal Tx FIFO ring boundary by notifying the stack to resend | |
3155 | * the packet at a later time. This gives the Tx FIFO an opportunity to | |
3156 | * flush all packets. When that occurs, we reset the Tx FIFO pointers | |
3157 | * to the beginning of the Tx FIFO. | |
3158 | **/ | |
3159 | ||
3160 | #define E1000_FIFO_HDR 0x10 | |
3161 | #define E1000_82547_PAD_LEN 0x3E0 | |
3162 | ||
e619d523 | 3163 | static int |
1da177e4 LT |
3164 | e1000_82547_fifo_workaround(struct e1000_adapter *adapter, struct sk_buff *skb) |
3165 | { | |
3166 | uint32_t fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; | |
3167 | uint32_t skb_fifo_len = skb->len + E1000_FIFO_HDR; | |
3168 | ||
9099cfb9 | 3169 | skb_fifo_len = ALIGN(skb_fifo_len, E1000_FIFO_HDR); |
1da177e4 | 3170 | |
96838a40 | 3171 | if (adapter->link_duplex != HALF_DUPLEX) |
1da177e4 LT |
3172 | goto no_fifo_stall_required; |
3173 | ||
96838a40 | 3174 | if (atomic_read(&adapter->tx_fifo_stall)) |
1da177e4 LT |
3175 | return 1; |
3176 | ||
96838a40 | 3177 | if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { |
1da177e4 LT |
3178 | atomic_set(&adapter->tx_fifo_stall, 1); |
3179 | return 1; | |
3180 | } | |
3181 | ||
3182 | no_fifo_stall_required: | |
3183 | adapter->tx_fifo_head += skb_fifo_len; | |
96838a40 | 3184 | if (adapter->tx_fifo_head >= adapter->tx_fifo_size) |
1da177e4 LT |
3185 | adapter->tx_fifo_head -= adapter->tx_fifo_size; |
3186 | return 0; | |
3187 | } | |
3188 | ||
2d7edb92 | 3189 | #define MINIMUM_DHCP_PACKET_SIZE 282 |
e619d523 | 3190 | static int |
2d7edb92 MC |
3191 | e1000_transfer_dhcp_info(struct e1000_adapter *adapter, struct sk_buff *skb) |
3192 | { | |
3193 | struct e1000_hw *hw = &adapter->hw; | |
3194 | uint16_t length, offset; | |
96838a40 JB |
3195 | if (vlan_tx_tag_present(skb)) { |
3196 | if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) && | |
2d7edb92 MC |
3197 | ( adapter->hw.mng_cookie.status & |
3198 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) ) | |
3199 | return 0; | |
3200 | } | |
20a44028 | 3201 | if (skb->len > MINIMUM_DHCP_PACKET_SIZE) { |
2d7edb92 | 3202 | struct ethhdr *eth = (struct ethhdr *) skb->data; |
96838a40 JB |
3203 | if ((htons(ETH_P_IP) == eth->h_proto)) { |
3204 | const struct iphdr *ip = | |
2d7edb92 | 3205 | (struct iphdr *)((uint8_t *)skb->data+14); |
96838a40 JB |
3206 | if (IPPROTO_UDP == ip->protocol) { |
3207 | struct udphdr *udp = | |
3208 | (struct udphdr *)((uint8_t *)ip + | |
2d7edb92 | 3209 | (ip->ihl << 2)); |
96838a40 | 3210 | if (ntohs(udp->dest) == 67) { |
2d7edb92 MC |
3211 | offset = (uint8_t *)udp + 8 - skb->data; |
3212 | length = skb->len - offset; | |
3213 | ||
3214 | return e1000_mng_write_dhcp_info(hw, | |
96838a40 | 3215 | (uint8_t *)udp + 8, |
2d7edb92 MC |
3216 | length); |
3217 | } | |
3218 | } | |
3219 | } | |
3220 | } | |
3221 | return 0; | |
3222 | } | |
3223 | ||
65c7973f JB |
3224 | static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) |
3225 | { | |
3226 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3227 | struct e1000_tx_ring *tx_ring = adapter->tx_ring; | |
3228 | ||
3229 | netif_stop_queue(netdev); | |
3230 | /* Herbert's original patch had: | |
3231 | * smp_mb__after_netif_stop_queue(); | |
3232 | * but since that doesn't exist yet, just open code it. */ | |
3233 | smp_mb(); | |
3234 | ||
3235 | /* We need to check again in a case another CPU has just | |
3236 | * made room available. */ | |
3237 | if (likely(E1000_DESC_UNUSED(tx_ring) < size)) | |
3238 | return -EBUSY; | |
3239 | ||
3240 | /* A reprieve! */ | |
3241 | netif_start_queue(netdev); | |
fcfb1224 | 3242 | ++adapter->restart_queue; |
65c7973f JB |
3243 | return 0; |
3244 | } | |
3245 | ||
3246 | static int e1000_maybe_stop_tx(struct net_device *netdev, | |
3247 | struct e1000_tx_ring *tx_ring, int size) | |
3248 | { | |
3249 | if (likely(E1000_DESC_UNUSED(tx_ring) >= size)) | |
3250 | return 0; | |
3251 | return __e1000_maybe_stop_tx(netdev, size); | |
3252 | } | |
3253 | ||
1da177e4 LT |
3254 | #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
3255 | static int | |
3256 | e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
3257 | { | |
60490fe0 | 3258 | struct e1000_adapter *adapter = netdev_priv(netdev); |
581d708e | 3259 | struct e1000_tx_ring *tx_ring; |
1da177e4 LT |
3260 | unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; |
3261 | unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; | |
3262 | unsigned int tx_flags = 0; | |
3263 | unsigned int len = skb->len; | |
3264 | unsigned long flags; | |
3265 | unsigned int nr_frags = 0; | |
3266 | unsigned int mss = 0; | |
3267 | int count = 0; | |
76c224bc | 3268 | int tso; |
1da177e4 LT |
3269 | unsigned int f; |
3270 | len -= skb->data_len; | |
3271 | ||
65c7973f JB |
3272 | /* This goes back to the question of how to logically map a tx queue |
3273 | * to a flow. Right now, performance is impacted slightly negatively | |
3274 | * if using multiple tx queues. If the stack breaks away from a | |
3275 | * single qdisc implementation, we can look at this again. */ | |
581d708e | 3276 | tx_ring = adapter->tx_ring; |
24025e4e | 3277 | |
581d708e | 3278 | if (unlikely(skb->len <= 0)) { |
1da177e4 LT |
3279 | dev_kfree_skb_any(skb); |
3280 | return NETDEV_TX_OK; | |
3281 | } | |
3282 | ||
032fe6e9 JB |
3283 | /* 82571 and newer doesn't need the workaround that limited descriptor |
3284 | * length to 4kB */ | |
3285 | if (adapter->hw.mac_type >= e1000_82571) | |
3286 | max_per_txd = 8192; | |
3287 | ||
7967168c | 3288 | mss = skb_shinfo(skb)->gso_size; |
76c224bc | 3289 | /* The controller does a simple calculation to |
1da177e4 LT |
3290 | * make sure there is enough room in the FIFO before |
3291 | * initiating the DMA for each buffer. The calc is: | |
3292 | * 4 = ceil(buffer len/mss). To make sure we don't | |
3293 | * overrun the FIFO, adjust the max buffer len if mss | |
3294 | * drops. */ | |
96838a40 | 3295 | if (mss) { |
9a3056da | 3296 | uint8_t hdr_len; |
1da177e4 LT |
3297 | max_per_txd = min(mss << 2, max_per_txd); |
3298 | max_txd_pwr = fls(max_per_txd) - 1; | |
9a3056da | 3299 | |
90fb5135 AK |
3300 | /* TSO Workaround for 82571/2/3 Controllers -- if skb->data |
3301 | * points to just header, pull a few bytes of payload from | |
3302 | * frags into skb->data */ | |
ab6a5bb6 | 3303 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
9f687888 JK |
3304 | if (skb->data_len && (hdr_len == (skb->len - skb->data_len))) { |
3305 | switch (adapter->hw.mac_type) { | |
3306 | unsigned int pull_size; | |
683a2aa3 HX |
3307 | case e1000_82544: |
3308 | /* Make sure we have room to chop off 4 bytes, | |
3309 | * and that the end alignment will work out to | |
3310 | * this hardware's requirements | |
3311 | * NOTE: this is a TSO only workaround | |
3312 | * if end byte alignment not correct move us | |
3313 | * into the next dword */ | |
27a884dc | 3314 | if ((unsigned long)(skb_tail_pointer(skb) - 1) & 4) |
683a2aa3 HX |
3315 | break; |
3316 | /* fall through */ | |
9f687888 JK |
3317 | case e1000_82571: |
3318 | case e1000_82572: | |
3319 | case e1000_82573: | |
cd94dd0b | 3320 | case e1000_ich8lan: |
9f687888 JK |
3321 | pull_size = min((unsigned int)4, skb->data_len); |
3322 | if (!__pskb_pull_tail(skb, pull_size)) { | |
a5eafce2 | 3323 | DPRINTK(DRV, ERR, |
9f687888 JK |
3324 | "__pskb_pull_tail failed.\n"); |
3325 | dev_kfree_skb_any(skb); | |
749dfc70 | 3326 | return NETDEV_TX_OK; |
9f687888 JK |
3327 | } |
3328 | len = skb->len - skb->data_len; | |
3329 | break; | |
3330 | default: | |
3331 | /* do nothing */ | |
3332 | break; | |
d74bbd3b | 3333 | } |
9a3056da | 3334 | } |
1da177e4 LT |
3335 | } |
3336 | ||
9a3056da | 3337 | /* reserve a descriptor for the offload context */ |
84fa7933 | 3338 | if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
1da177e4 | 3339 | count++; |
2648345f | 3340 | count++; |
fd803241 | 3341 | |
fd803241 | 3342 | /* Controller Erratum workaround */ |
89114afd | 3343 | if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb)) |
fd803241 | 3344 | count++; |
fd803241 | 3345 | |
1da177e4 LT |
3346 | count += TXD_USE_COUNT(len, max_txd_pwr); |
3347 | ||
96838a40 | 3348 | if (adapter->pcix_82544) |
1da177e4 LT |
3349 | count++; |
3350 | ||
96838a40 | 3351 | /* work-around for errata 10 and it applies to all controllers |
97338bde MC |
3352 | * in PCI-X mode, so add one more descriptor to the count |
3353 | */ | |
96838a40 | 3354 | if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && |
97338bde MC |
3355 | (len > 2015))) |
3356 | count++; | |
3357 | ||
1da177e4 | 3358 | nr_frags = skb_shinfo(skb)->nr_frags; |
96838a40 | 3359 | for (f = 0; f < nr_frags; f++) |
1da177e4 LT |
3360 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, |
3361 | max_txd_pwr); | |
96838a40 | 3362 | if (adapter->pcix_82544) |
1da177e4 LT |
3363 | count += nr_frags; |
3364 | ||
0f15a8fa JK |
3365 | |
3366 | if (adapter->hw.tx_pkt_filtering && | |
3367 | (adapter->hw.mac_type == e1000_82573)) | |
2d7edb92 MC |
3368 | e1000_transfer_dhcp_info(adapter, skb); |
3369 | ||
f50393fe | 3370 | if (!spin_trylock_irqsave(&tx_ring->tx_lock, flags)) |
581d708e | 3371 | /* Collision - tell upper layer to requeue */ |
581d708e | 3372 | return NETDEV_TX_LOCKED; |
1da177e4 LT |
3373 | |
3374 | /* need: count + 2 desc gap to keep tail from touching | |
3375 | * head, otherwise try next time */ | |
65c7973f | 3376 | if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2))) { |
581d708e | 3377 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
3378 | return NETDEV_TX_BUSY; |
3379 | } | |
3380 | ||
96838a40 JB |
3381 | if (unlikely(adapter->hw.mac_type == e1000_82547)) { |
3382 | if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) { | |
1da177e4 | 3383 | netif_stop_queue(netdev); |
1314bbf3 | 3384 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); |
581d708e | 3385 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
3386 | return NETDEV_TX_BUSY; |
3387 | } | |
3388 | } | |
3389 | ||
96838a40 | 3390 | if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) { |
1da177e4 LT |
3391 | tx_flags |= E1000_TX_FLAGS_VLAN; |
3392 | tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); | |
3393 | } | |
3394 | ||
581d708e | 3395 | first = tx_ring->next_to_use; |
96838a40 | 3396 | |
581d708e | 3397 | tso = e1000_tso(adapter, tx_ring, skb); |
1da177e4 LT |
3398 | if (tso < 0) { |
3399 | dev_kfree_skb_any(skb); | |
581d708e | 3400 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
3401 | return NETDEV_TX_OK; |
3402 | } | |
3403 | ||
fd803241 JK |
3404 | if (likely(tso)) { |
3405 | tx_ring->last_tx_tso = 1; | |
1da177e4 | 3406 | tx_flags |= E1000_TX_FLAGS_TSO; |
fd803241 | 3407 | } else if (likely(e1000_tx_csum(adapter, tx_ring, skb))) |
1da177e4 LT |
3408 | tx_flags |= E1000_TX_FLAGS_CSUM; |
3409 | ||
2d7edb92 | 3410 | /* Old method was to assume IPv4 packet by default if TSO was enabled. |
868d5309 | 3411 | * 82571 hardware supports TSO capabilities for IPv6 as well... |
2d7edb92 | 3412 | * no longer assume, we must. */ |
60828236 | 3413 | if (likely(skb->protocol == htons(ETH_P_IP))) |
2d7edb92 MC |
3414 | tx_flags |= E1000_TX_FLAGS_IPV4; |
3415 | ||
581d708e MC |
3416 | e1000_tx_queue(adapter, tx_ring, tx_flags, |
3417 | e1000_tx_map(adapter, tx_ring, skb, first, | |
3418 | max_per_txd, nr_frags, mss)); | |
1da177e4 LT |
3419 | |
3420 | netdev->trans_start = jiffies; | |
3421 | ||
3422 | /* Make sure there is space in the ring for the next send. */ | |
65c7973f | 3423 | e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2); |
1da177e4 | 3424 | |
581d708e | 3425 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
3426 | return NETDEV_TX_OK; |
3427 | } | |
3428 | ||
3429 | /** | |
3430 | * e1000_tx_timeout - Respond to a Tx Hang | |
3431 | * @netdev: network interface device structure | |
3432 | **/ | |
3433 | ||
3434 | static void | |
3435 | e1000_tx_timeout(struct net_device *netdev) | |
3436 | { | |
60490fe0 | 3437 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
3438 | |
3439 | /* Do the reset outside of interrupt context */ | |
87041639 JK |
3440 | adapter->tx_timeout_count++; |
3441 | schedule_work(&adapter->reset_task); | |
1da177e4 LT |
3442 | } |
3443 | ||
3444 | static void | |
65f27f38 | 3445 | e1000_reset_task(struct work_struct *work) |
1da177e4 | 3446 | { |
65f27f38 DH |
3447 | struct e1000_adapter *adapter = |
3448 | container_of(work, struct e1000_adapter, reset_task); | |
1da177e4 | 3449 | |
2db10a08 | 3450 | e1000_reinit_locked(adapter); |
1da177e4 LT |
3451 | } |
3452 | ||
3453 | /** | |
3454 | * e1000_get_stats - Get System Network Statistics | |
3455 | * @netdev: network interface device structure | |
3456 | * | |
3457 | * Returns the address of the device statistics structure. | |
3458 | * The statistics are actually updated from the timer callback. | |
3459 | **/ | |
3460 | ||
3461 | static struct net_device_stats * | |
3462 | e1000_get_stats(struct net_device *netdev) | |
3463 | { | |
60490fe0 | 3464 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3465 | |
6b7660cd | 3466 | /* only return the current stats */ |
1da177e4 LT |
3467 | return &adapter->net_stats; |
3468 | } | |
3469 | ||
3470 | /** | |
3471 | * e1000_change_mtu - Change the Maximum Transfer Unit | |
3472 | * @netdev: network interface device structure | |
3473 | * @new_mtu: new value for maximum frame size | |
3474 | * | |
3475 | * Returns 0 on success, negative on failure | |
3476 | **/ | |
3477 | ||
3478 | static int | |
3479 | e1000_change_mtu(struct net_device *netdev, int new_mtu) | |
3480 | { | |
60490fe0 | 3481 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3482 | int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
85b22eb6 | 3483 | uint16_t eeprom_data = 0; |
1da177e4 | 3484 | |
96838a40 JB |
3485 | if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || |
3486 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
3487 | DPRINTK(PROBE, ERR, "Invalid MTU setting\n"); | |
1da177e4 | 3488 | return -EINVAL; |
2d7edb92 | 3489 | } |
1da177e4 | 3490 | |
997f5cbd JK |
3491 | /* Adapter-specific max frame size limits. */ |
3492 | switch (adapter->hw.mac_type) { | |
9e2feace | 3493 | case e1000_undefined ... e1000_82542_rev2_1: |
cd94dd0b | 3494 | case e1000_ich8lan: |
997f5cbd JK |
3495 | if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) { |
3496 | DPRINTK(PROBE, ERR, "Jumbo Frames not supported.\n"); | |
2d7edb92 | 3497 | return -EINVAL; |
2d7edb92 | 3498 | } |
997f5cbd | 3499 | break; |
85b22eb6 | 3500 | case e1000_82573: |
249d71d6 BA |
3501 | /* Jumbo Frames not supported if: |
3502 | * - this is not an 82573L device | |
3503 | * - ASPM is enabled in any way (0x1A bits 3:2) */ | |
85b22eb6 JK |
3504 | e1000_read_eeprom(&adapter->hw, EEPROM_INIT_3GIO_3, 1, |
3505 | &eeprom_data); | |
249d71d6 BA |
3506 | if ((adapter->hw.device_id != E1000_DEV_ID_82573L) || |
3507 | (eeprom_data & EEPROM_WORD1A_ASPM_MASK)) { | |
85b22eb6 JK |
3508 | if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) { |
3509 | DPRINTK(PROBE, ERR, | |
3510 | "Jumbo Frames not supported.\n"); | |
3511 | return -EINVAL; | |
3512 | } | |
3513 | break; | |
3514 | } | |
249d71d6 BA |
3515 | /* ERT will be enabled later to enable wire speed receives */ |
3516 | ||
85b22eb6 | 3517 | /* fall through to get support */ |
997f5cbd JK |
3518 | case e1000_82571: |
3519 | case e1000_82572: | |
87041639 | 3520 | case e1000_80003es2lan: |
997f5cbd JK |
3521 | #define MAX_STD_JUMBO_FRAME_SIZE 9234 |
3522 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { | |
3523 | DPRINTK(PROBE, ERR, "MTU > 9216 not supported.\n"); | |
3524 | return -EINVAL; | |
3525 | } | |
3526 | break; | |
3527 | default: | |
3528 | /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */ | |
3529 | break; | |
1da177e4 LT |
3530 | } |
3531 | ||
87f5032e | 3532 | /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
9e2feace AK |
3533 | * means we reserve 2 more, this pushes us to allocate from the next |
3534 | * larger slab size | |
3535 | * i.e. RXBUFFER_2048 --> size-4096 slab */ | |
3536 | ||
3537 | if (max_frame <= E1000_RXBUFFER_256) | |
3538 | adapter->rx_buffer_len = E1000_RXBUFFER_256; | |
3539 | else if (max_frame <= E1000_RXBUFFER_512) | |
3540 | adapter->rx_buffer_len = E1000_RXBUFFER_512; | |
3541 | else if (max_frame <= E1000_RXBUFFER_1024) | |
3542 | adapter->rx_buffer_len = E1000_RXBUFFER_1024; | |
3543 | else if (max_frame <= E1000_RXBUFFER_2048) | |
3544 | adapter->rx_buffer_len = E1000_RXBUFFER_2048; | |
3545 | else if (max_frame <= E1000_RXBUFFER_4096) | |
3546 | adapter->rx_buffer_len = E1000_RXBUFFER_4096; | |
3547 | else if (max_frame <= E1000_RXBUFFER_8192) | |
3548 | adapter->rx_buffer_len = E1000_RXBUFFER_8192; | |
3549 | else if (max_frame <= E1000_RXBUFFER_16384) | |
3550 | adapter->rx_buffer_len = E1000_RXBUFFER_16384; | |
3551 | ||
3552 | /* adjust allocation if LPE protects us, and we aren't using SBP */ | |
9e2feace AK |
3553 | if (!adapter->hw.tbi_compatibility_on && |
3554 | ((max_frame == MAXIMUM_ETHERNET_FRAME_SIZE) || | |
3555 | (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE))) | |
3556 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; | |
997f5cbd | 3557 | |
2d7edb92 | 3558 | netdev->mtu = new_mtu; |
83cd8279 | 3559 | adapter->hw.max_frame_size = max_frame; |
2d7edb92 | 3560 | |
2db10a08 AK |
3561 | if (netif_running(netdev)) |
3562 | e1000_reinit_locked(adapter); | |
1da177e4 | 3563 | |
1da177e4 LT |
3564 | return 0; |
3565 | } | |
3566 | ||
3567 | /** | |
3568 | * e1000_update_stats - Update the board statistics counters | |
3569 | * @adapter: board private structure | |
3570 | **/ | |
3571 | ||
3572 | void | |
3573 | e1000_update_stats(struct e1000_adapter *adapter) | |
3574 | { | |
3575 | struct e1000_hw *hw = &adapter->hw; | |
282f33c9 | 3576 | struct pci_dev *pdev = adapter->pdev; |
1da177e4 LT |
3577 | unsigned long flags; |
3578 | uint16_t phy_tmp; | |
3579 | ||
3580 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF | |
3581 | ||
282f33c9 LV |
3582 | /* |
3583 | * Prevent stats update while adapter is being reset, or if the pci | |
3584 | * connection is down. | |
3585 | */ | |
9026729b | 3586 | if (adapter->link_speed == 0) |
282f33c9 | 3587 | return; |
81b1955e | 3588 | if (pci_channel_offline(pdev)) |
9026729b AK |
3589 | return; |
3590 | ||
1da177e4 LT |
3591 | spin_lock_irqsave(&adapter->stats_lock, flags); |
3592 | ||
3593 | /* these counters are modified from e1000_adjust_tbi_stats, | |
3594 | * called from the interrupt context, so they must only | |
3595 | * be written while holding adapter->stats_lock | |
3596 | */ | |
3597 | ||
3598 | adapter->stats.crcerrs += E1000_READ_REG(hw, CRCERRS); | |
3599 | adapter->stats.gprc += E1000_READ_REG(hw, GPRC); | |
3600 | adapter->stats.gorcl += E1000_READ_REG(hw, GORCL); | |
3601 | adapter->stats.gorch += E1000_READ_REG(hw, GORCH); | |
3602 | adapter->stats.bprc += E1000_READ_REG(hw, BPRC); | |
3603 | adapter->stats.mprc += E1000_READ_REG(hw, MPRC); | |
3604 | adapter->stats.roc += E1000_READ_REG(hw, ROC); | |
cd94dd0b AK |
3605 | |
3606 | if (adapter->hw.mac_type != e1000_ich8lan) { | |
90fb5135 AK |
3607 | adapter->stats.prc64 += E1000_READ_REG(hw, PRC64); |
3608 | adapter->stats.prc127 += E1000_READ_REG(hw, PRC127); | |
3609 | adapter->stats.prc255 += E1000_READ_REG(hw, PRC255); | |
3610 | adapter->stats.prc511 += E1000_READ_REG(hw, PRC511); | |
3611 | adapter->stats.prc1023 += E1000_READ_REG(hw, PRC1023); | |
3612 | adapter->stats.prc1522 += E1000_READ_REG(hw, PRC1522); | |
cd94dd0b | 3613 | } |
1da177e4 LT |
3614 | |
3615 | adapter->stats.symerrs += E1000_READ_REG(hw, SYMERRS); | |
3616 | adapter->stats.mpc += E1000_READ_REG(hw, MPC); | |
3617 | adapter->stats.scc += E1000_READ_REG(hw, SCC); | |
3618 | adapter->stats.ecol += E1000_READ_REG(hw, ECOL); | |
3619 | adapter->stats.mcc += E1000_READ_REG(hw, MCC); | |
3620 | adapter->stats.latecol += E1000_READ_REG(hw, LATECOL); | |
3621 | adapter->stats.dc += E1000_READ_REG(hw, DC); | |
3622 | adapter->stats.sec += E1000_READ_REG(hw, SEC); | |
3623 | adapter->stats.rlec += E1000_READ_REG(hw, RLEC); | |
3624 | adapter->stats.xonrxc += E1000_READ_REG(hw, XONRXC); | |
3625 | adapter->stats.xontxc += E1000_READ_REG(hw, XONTXC); | |
3626 | adapter->stats.xoffrxc += E1000_READ_REG(hw, XOFFRXC); | |
3627 | adapter->stats.xofftxc += E1000_READ_REG(hw, XOFFTXC); | |
3628 | adapter->stats.fcruc += E1000_READ_REG(hw, FCRUC); | |
3629 | adapter->stats.gptc += E1000_READ_REG(hw, GPTC); | |
3630 | adapter->stats.gotcl += E1000_READ_REG(hw, GOTCL); | |
3631 | adapter->stats.gotch += E1000_READ_REG(hw, GOTCH); | |
3632 | adapter->stats.rnbc += E1000_READ_REG(hw, RNBC); | |
3633 | adapter->stats.ruc += E1000_READ_REG(hw, RUC); | |
3634 | adapter->stats.rfc += E1000_READ_REG(hw, RFC); | |
3635 | adapter->stats.rjc += E1000_READ_REG(hw, RJC); | |
3636 | adapter->stats.torl += E1000_READ_REG(hw, TORL); | |
3637 | adapter->stats.torh += E1000_READ_REG(hw, TORH); | |
3638 | adapter->stats.totl += E1000_READ_REG(hw, TOTL); | |
3639 | adapter->stats.toth += E1000_READ_REG(hw, TOTH); | |
3640 | adapter->stats.tpr += E1000_READ_REG(hw, TPR); | |
cd94dd0b AK |
3641 | |
3642 | if (adapter->hw.mac_type != e1000_ich8lan) { | |
90fb5135 AK |
3643 | adapter->stats.ptc64 += E1000_READ_REG(hw, PTC64); |
3644 | adapter->stats.ptc127 += E1000_READ_REG(hw, PTC127); | |
3645 | adapter->stats.ptc255 += E1000_READ_REG(hw, PTC255); | |
3646 | adapter->stats.ptc511 += E1000_READ_REG(hw, PTC511); | |
3647 | adapter->stats.ptc1023 += E1000_READ_REG(hw, PTC1023); | |
3648 | adapter->stats.ptc1522 += E1000_READ_REG(hw, PTC1522); | |
cd94dd0b AK |
3649 | } |
3650 | ||
1da177e4 LT |
3651 | adapter->stats.mptc += E1000_READ_REG(hw, MPTC); |
3652 | adapter->stats.bptc += E1000_READ_REG(hw, BPTC); | |
3653 | ||
3654 | /* used for adaptive IFS */ | |
3655 | ||
3656 | hw->tx_packet_delta = E1000_READ_REG(hw, TPT); | |
3657 | adapter->stats.tpt += hw->tx_packet_delta; | |
3658 | hw->collision_delta = E1000_READ_REG(hw, COLC); | |
3659 | adapter->stats.colc += hw->collision_delta; | |
3660 | ||
96838a40 | 3661 | if (hw->mac_type >= e1000_82543) { |
1da177e4 LT |
3662 | adapter->stats.algnerrc += E1000_READ_REG(hw, ALGNERRC); |
3663 | adapter->stats.rxerrc += E1000_READ_REG(hw, RXERRC); | |
3664 | adapter->stats.tncrs += E1000_READ_REG(hw, TNCRS); | |
3665 | adapter->stats.cexterr += E1000_READ_REG(hw, CEXTERR); | |
3666 | adapter->stats.tsctc += E1000_READ_REG(hw, TSCTC); | |
3667 | adapter->stats.tsctfc += E1000_READ_REG(hw, TSCTFC); | |
3668 | } | |
96838a40 | 3669 | if (hw->mac_type > e1000_82547_rev_2) { |
2d7edb92 MC |
3670 | adapter->stats.iac += E1000_READ_REG(hw, IAC); |
3671 | adapter->stats.icrxoc += E1000_READ_REG(hw, ICRXOC); | |
cd94dd0b AK |
3672 | |
3673 | if (adapter->hw.mac_type != e1000_ich8lan) { | |
90fb5135 AK |
3674 | adapter->stats.icrxptc += E1000_READ_REG(hw, ICRXPTC); |
3675 | adapter->stats.icrxatc += E1000_READ_REG(hw, ICRXATC); | |
3676 | adapter->stats.ictxptc += E1000_READ_REG(hw, ICTXPTC); | |
3677 | adapter->stats.ictxatc += E1000_READ_REG(hw, ICTXATC); | |
3678 | adapter->stats.ictxqec += E1000_READ_REG(hw, ICTXQEC); | |
3679 | adapter->stats.ictxqmtc += E1000_READ_REG(hw, ICTXQMTC); | |
3680 | adapter->stats.icrxdmtc += E1000_READ_REG(hw, ICRXDMTC); | |
cd94dd0b | 3681 | } |
2d7edb92 | 3682 | } |
1da177e4 LT |
3683 | |
3684 | /* Fill out the OS statistics structure */ | |
1da177e4 LT |
3685 | adapter->net_stats.rx_packets = adapter->stats.gprc; |
3686 | adapter->net_stats.tx_packets = adapter->stats.gptc; | |
3687 | adapter->net_stats.rx_bytes = adapter->stats.gorcl; | |
3688 | adapter->net_stats.tx_bytes = adapter->stats.gotcl; | |
3689 | adapter->net_stats.multicast = adapter->stats.mprc; | |
3690 | adapter->net_stats.collisions = adapter->stats.colc; | |
3691 | ||
3692 | /* Rx Errors */ | |
3693 | ||
87041639 JK |
3694 | /* RLEC on some newer hardware can be incorrect so build |
3695 | * our own version based on RUC and ROC */ | |
1da177e4 LT |
3696 | adapter->net_stats.rx_errors = adapter->stats.rxerrc + |
3697 | adapter->stats.crcerrs + adapter->stats.algnerrc + | |
87041639 JK |
3698 | adapter->stats.ruc + adapter->stats.roc + |
3699 | adapter->stats.cexterr; | |
49559854 MW |
3700 | adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc; |
3701 | adapter->net_stats.rx_length_errors = adapter->stats.rlerrc; | |
1da177e4 LT |
3702 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; |
3703 | adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; | |
1da177e4 LT |
3704 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; |
3705 | ||
3706 | /* Tx Errors */ | |
49559854 MW |
3707 | adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol; |
3708 | adapter->net_stats.tx_errors = adapter->stats.txerrc; | |
1da177e4 LT |
3709 | adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; |
3710 | adapter->net_stats.tx_window_errors = adapter->stats.latecol; | |
3711 | adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; | |
167fb284 JG |
3712 | if (adapter->hw.bad_tx_carr_stats_fd && |
3713 | adapter->link_duplex == FULL_DUPLEX) { | |
3714 | adapter->net_stats.tx_carrier_errors = 0; | |
3715 | adapter->stats.tncrs = 0; | |
3716 | } | |
1da177e4 LT |
3717 | |
3718 | /* Tx Dropped needs to be maintained elsewhere */ | |
3719 | ||
3720 | /* Phy Stats */ | |
96838a40 JB |
3721 | if (hw->media_type == e1000_media_type_copper) { |
3722 | if ((adapter->link_speed == SPEED_1000) && | |
1da177e4 LT |
3723 | (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
3724 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; | |
3725 | adapter->phy_stats.idle_errors += phy_tmp; | |
3726 | } | |
3727 | ||
96838a40 | 3728 | if ((hw->mac_type <= e1000_82546) && |
1da177e4 LT |
3729 | (hw->phy_type == e1000_phy_m88) && |
3730 | !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) | |
3731 | adapter->phy_stats.receive_errors += phy_tmp; | |
3732 | } | |
3733 | ||
15e376b4 JG |
3734 | /* Management Stats */ |
3735 | if (adapter->hw.has_smbus) { | |
3736 | adapter->stats.mgptc += E1000_READ_REG(hw, MGTPTC); | |
3737 | adapter->stats.mgprc += E1000_READ_REG(hw, MGTPRC); | |
3738 | adapter->stats.mgpdc += E1000_READ_REG(hw, MGTPDC); | |
3739 | } | |
3740 | ||
1da177e4 LT |
3741 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
3742 | } | |
9ac98284 JB |
3743 | |
3744 | /** | |
3745 | * e1000_intr_msi - Interrupt Handler | |
3746 | * @irq: interrupt number | |
3747 | * @data: pointer to a network interface device structure | |
3748 | **/ | |
3749 | ||
b5fc8f0c JB |
3750 | static irqreturn_t |
3751 | e1000_intr_msi(int irq, void *data) | |
9ac98284 JB |
3752 | { |
3753 | struct net_device *netdev = data; | |
3754 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3755 | struct e1000_hw *hw = &adapter->hw; | |
3756 | #ifndef CONFIG_E1000_NAPI | |
3757 | int i; | |
3758 | #endif | |
b5fc8f0c | 3759 | uint32_t icr = E1000_READ_REG(hw, ICR); |
9ac98284 | 3760 | |
9ac98284 | 3761 | #ifdef CONFIG_E1000_NAPI |
b5fc8f0c JB |
3762 | /* read ICR disables interrupts using IAM, so keep up with our |
3763 | * enable/disable accounting */ | |
3764 | atomic_inc(&adapter->irq_sem); | |
9ac98284 | 3765 | #endif |
b5fc8f0c JB |
3766 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
3767 | hw->get_link_status = 1; | |
3768 | /* 80003ES2LAN workaround-- For packet buffer work-around on | |
3769 | * link down event; disable receives here in the ISR and reset | |
3770 | * adapter in watchdog */ | |
3771 | if (netif_carrier_ok(netdev) && | |
3772 | (adapter->hw.mac_type == e1000_80003es2lan)) { | |
3773 | /* disable receives */ | |
3774 | uint32_t rctl = E1000_READ_REG(hw, RCTL); | |
3775 | E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); | |
9ac98284 | 3776 | } |
b5fc8f0c JB |
3777 | /* guard against interrupt when we're going down */ |
3778 | if (!test_bit(__E1000_DOWN, &adapter->flags)) | |
3779 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
9ac98284 JB |
3780 | } |
3781 | ||
3782 | #ifdef CONFIG_E1000_NAPI | |
bea3348e | 3783 | if (likely(netif_rx_schedule_prep(netdev, &adapter->napi))) { |
835bb129 JB |
3784 | adapter->total_tx_bytes = 0; |
3785 | adapter->total_tx_packets = 0; | |
3786 | adapter->total_rx_bytes = 0; | |
3787 | adapter->total_rx_packets = 0; | |
bea3348e | 3788 | __netif_rx_schedule(netdev, &adapter->napi); |
835bb129 | 3789 | } else |
9ac98284 JB |
3790 | e1000_irq_enable(adapter); |
3791 | #else | |
835bb129 JB |
3792 | adapter->total_tx_bytes = 0; |
3793 | adapter->total_rx_bytes = 0; | |
3794 | adapter->total_tx_packets = 0; | |
3795 | adapter->total_rx_packets = 0; | |
3796 | ||
9ac98284 JB |
3797 | for (i = 0; i < E1000_MAX_INTR; i++) |
3798 | if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) & | |
46fcc86d | 3799 | !e1000_clean_tx_irq(adapter, adapter->tx_ring))) |
9ac98284 | 3800 | break; |
835bb129 JB |
3801 | |
3802 | if (likely(adapter->itr_setting & 3)) | |
3803 | e1000_set_itr(adapter); | |
9ac98284 JB |
3804 | #endif |
3805 | ||
3806 | return IRQ_HANDLED; | |
3807 | } | |
1da177e4 LT |
3808 | |
3809 | /** | |
3810 | * e1000_intr - Interrupt Handler | |
3811 | * @irq: interrupt number | |
3812 | * @data: pointer to a network interface device structure | |
1da177e4 LT |
3813 | **/ |
3814 | ||
3815 | static irqreturn_t | |
7d12e780 | 3816 | e1000_intr(int irq, void *data) |
1da177e4 LT |
3817 | { |
3818 | struct net_device *netdev = data; | |
60490fe0 | 3819 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3820 | struct e1000_hw *hw = &adapter->hw; |
87041639 | 3821 | uint32_t rctl, icr = E1000_READ_REG(hw, ICR); |
1e613fd9 | 3822 | #ifndef CONFIG_E1000_NAPI |
581d708e | 3823 | int i; |
835bb129 JB |
3824 | #endif |
3825 | if (unlikely(!icr)) | |
3826 | return IRQ_NONE; /* Not our interrupt */ | |
3827 | ||
3828 | #ifdef CONFIG_E1000_NAPI | |
3829 | /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is | |
3830 | * not set, then the adapter didn't send an interrupt */ | |
3831 | if (unlikely(hw->mac_type >= e1000_82571 && | |
3832 | !(icr & E1000_ICR_INT_ASSERTED))) | |
3833 | return IRQ_NONE; | |
3834 | ||
1e613fd9 JK |
3835 | /* Interrupt Auto-Mask...upon reading ICR, |
3836 | * interrupts are masked. No need for the | |
3837 | * IMC write, but it does mean we should | |
3838 | * account for it ASAP. */ | |
3839 | if (likely(hw->mac_type >= e1000_82571)) | |
3840 | atomic_inc(&adapter->irq_sem); | |
be2b28ed | 3841 | #endif |
1da177e4 | 3842 | |
96838a40 | 3843 | if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { |
1da177e4 | 3844 | hw->get_link_status = 1; |
87041639 JK |
3845 | /* 80003ES2LAN workaround-- |
3846 | * For packet buffer work-around on link down event; | |
3847 | * disable receives here in the ISR and | |
3848 | * reset adapter in watchdog | |
3849 | */ | |
3850 | if (netif_carrier_ok(netdev) && | |
3851 | (adapter->hw.mac_type == e1000_80003es2lan)) { | |
3852 | /* disable receives */ | |
3853 | rctl = E1000_READ_REG(hw, RCTL); | |
3854 | E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); | |
3855 | } | |
1314bbf3 AK |
3856 | /* guard against interrupt when we're going down */ |
3857 | if (!test_bit(__E1000_DOWN, &adapter->flags)) | |
3858 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1da177e4 LT |
3859 | } |
3860 | ||
3861 | #ifdef CONFIG_E1000_NAPI | |
1e613fd9 | 3862 | if (unlikely(hw->mac_type < e1000_82571)) { |
835bb129 | 3863 | /* disable interrupts, without the synchronize_irq bit */ |
1e613fd9 JK |
3864 | atomic_inc(&adapter->irq_sem); |
3865 | E1000_WRITE_REG(hw, IMC, ~0); | |
3866 | E1000_WRITE_FLUSH(hw); | |
3867 | } | |
bea3348e | 3868 | if (likely(netif_rx_schedule_prep(netdev, &adapter->napi))) { |
835bb129 JB |
3869 | adapter->total_tx_bytes = 0; |
3870 | adapter->total_tx_packets = 0; | |
3871 | adapter->total_rx_bytes = 0; | |
3872 | adapter->total_rx_packets = 0; | |
bea3348e | 3873 | __netif_rx_schedule(netdev, &adapter->napi); |
835bb129 | 3874 | } else |
90fb5135 AK |
3875 | /* this really should not happen! if it does it is basically a |
3876 | * bug, but not a hard error, so enable ints and continue */ | |
581d708e | 3877 | e1000_irq_enable(adapter); |
c1605eb3 | 3878 | #else |
1da177e4 | 3879 | /* Writing IMC and IMS is needed for 82547. |
96838a40 JB |
3880 | * Due to Hub Link bus being occupied, an interrupt |
3881 | * de-assertion message is not able to be sent. | |
3882 | * When an interrupt assertion message is generated later, | |
3883 | * two messages are re-ordered and sent out. | |
3884 | * That causes APIC to think 82547 is in de-assertion | |
3885 | * state, while 82547 is in assertion state, resulting | |
3886 | * in dead lock. Writing IMC forces 82547 into | |
3887 | * de-assertion state. | |
3888 | */ | |
3889 | if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) { | |
1da177e4 | 3890 | atomic_inc(&adapter->irq_sem); |
2648345f | 3891 | E1000_WRITE_REG(hw, IMC, ~0); |
1da177e4 LT |
3892 | } |
3893 | ||
835bb129 JB |
3894 | adapter->total_tx_bytes = 0; |
3895 | adapter->total_rx_bytes = 0; | |
3896 | adapter->total_tx_packets = 0; | |
3897 | adapter->total_rx_packets = 0; | |
3898 | ||
96838a40 JB |
3899 | for (i = 0; i < E1000_MAX_INTR; i++) |
3900 | if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) & | |
46fcc86d | 3901 | !e1000_clean_tx_irq(adapter, adapter->tx_ring))) |
1da177e4 LT |
3902 | break; |
3903 | ||
835bb129 JB |
3904 | if (likely(adapter->itr_setting & 3)) |
3905 | e1000_set_itr(adapter); | |
3906 | ||
96838a40 | 3907 | if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) |
1da177e4 | 3908 | e1000_irq_enable(adapter); |
581d708e | 3909 | |
c1605eb3 | 3910 | #endif |
1da177e4 LT |
3911 | return IRQ_HANDLED; |
3912 | } | |
3913 | ||
3914 | #ifdef CONFIG_E1000_NAPI | |
3915 | /** | |
3916 | * e1000_clean - NAPI Rx polling callback | |
3917 | * @adapter: board private structure | |
3918 | **/ | |
3919 | ||
3920 | static int | |
bea3348e | 3921 | e1000_clean(struct napi_struct *napi, int budget) |
1da177e4 | 3922 | { |
bea3348e SH |
3923 | struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); |
3924 | struct net_device *poll_dev = adapter->netdev; | |
d3d9e484 | 3925 | int tx_cleaned = 0, work_done = 0; |
581d708e MC |
3926 | |
3927 | /* Must NOT use netdev_priv macro here. */ | |
3928 | adapter = poll_dev->priv; | |
3929 | ||
3930 | /* Keep link state information with original netdev */ | |
d3d9e484 | 3931 | if (!netif_carrier_ok(poll_dev)) |
581d708e | 3932 | goto quit_polling; |
2648345f | 3933 | |
d3d9e484 AK |
3934 | /* e1000_clean is called per-cpu. This lock protects |
3935 | * tx_ring[0] from being cleaned by multiple cpus | |
3936 | * simultaneously. A failure obtaining the lock means | |
3937 | * tx_ring[0] is currently being cleaned anyway. */ | |
3938 | if (spin_trylock(&adapter->tx_queue_lock)) { | |
3939 | tx_cleaned = e1000_clean_tx_irq(adapter, | |
3940 | &adapter->tx_ring[0]); | |
3941 | spin_unlock(&adapter->tx_queue_lock); | |
581d708e MC |
3942 | } |
3943 | ||
d3d9e484 | 3944 | adapter->clean_rx(adapter, &adapter->rx_ring[0], |
bea3348e | 3945 | &work_done, budget); |
96838a40 | 3946 | |
2b02893e | 3947 | /* If no Tx and not enough Rx work done, exit the polling mode */ |
bea3348e | 3948 | if ((!tx_cleaned && (work_done < budget)) || |
d3d9e484 | 3949 | !netif_running(poll_dev)) { |
581d708e | 3950 | quit_polling: |
835bb129 JB |
3951 | if (likely(adapter->itr_setting & 3)) |
3952 | e1000_set_itr(adapter); | |
bea3348e | 3953 | netif_rx_complete(poll_dev, napi); |
1da177e4 | 3954 | e1000_irq_enable(adapter); |
1da177e4 LT |
3955 | } |
3956 | ||
bea3348e | 3957 | return work_done; |
1da177e4 LT |
3958 | } |
3959 | ||
3960 | #endif | |
3961 | /** | |
3962 | * e1000_clean_tx_irq - Reclaim resources after transmit completes | |
3963 | * @adapter: board private structure | |
3964 | **/ | |
3965 | ||
3966 | static boolean_t | |
581d708e MC |
3967 | e1000_clean_tx_irq(struct e1000_adapter *adapter, |
3968 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 3969 | { |
1da177e4 LT |
3970 | struct net_device *netdev = adapter->netdev; |
3971 | struct e1000_tx_desc *tx_desc, *eop_desc; | |
3972 | struct e1000_buffer *buffer_info; | |
3973 | unsigned int i, eop; | |
2a1af5d7 JK |
3974 | #ifdef CONFIG_E1000_NAPI |
3975 | unsigned int count = 0; | |
3976 | #endif | |
46fcc86d | 3977 | boolean_t cleaned = FALSE; |
835bb129 | 3978 | unsigned int total_tx_bytes=0, total_tx_packets=0; |
1da177e4 LT |
3979 | |
3980 | i = tx_ring->next_to_clean; | |
3981 | eop = tx_ring->buffer_info[i].next_to_watch; | |
3982 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
3983 | ||
581d708e | 3984 | while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) { |
96838a40 | 3985 | for (cleaned = FALSE; !cleaned; ) { |
1da177e4 LT |
3986 | tx_desc = E1000_TX_DESC(*tx_ring, i); |
3987 | buffer_info = &tx_ring->buffer_info[i]; | |
3988 | cleaned = (i == eop); | |
3989 | ||
835bb129 | 3990 | if (cleaned) { |
2b65326e | 3991 | struct sk_buff *skb = buffer_info->skb; |
7753b171 JB |
3992 | unsigned int segs, bytecount; |
3993 | segs = skb_shinfo(skb)->gso_segs ?: 1; | |
3994 | /* multiply data chunks by size of headers */ | |
3995 | bytecount = ((segs - 1) * skb_headlen(skb)) + | |
3996 | skb->len; | |
2b65326e | 3997 | total_tx_packets += segs; |
7753b171 | 3998 | total_tx_bytes += bytecount; |
835bb129 | 3999 | } |
fd803241 | 4000 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
a9ebadd6 | 4001 | tx_desc->upper.data = 0; |
1da177e4 | 4002 | |
96838a40 | 4003 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 | 4004 | } |
581d708e | 4005 | |
1da177e4 LT |
4006 | eop = tx_ring->buffer_info[i].next_to_watch; |
4007 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
2a1af5d7 JK |
4008 | #ifdef CONFIG_E1000_NAPI |
4009 | #define E1000_TX_WEIGHT 64 | |
4010 | /* weight of a sort for tx, to avoid endless transmit cleanup */ | |
46fcc86d | 4011 | if (count++ == E1000_TX_WEIGHT) break; |
2a1af5d7 | 4012 | #endif |
1da177e4 LT |
4013 | } |
4014 | ||
4015 | tx_ring->next_to_clean = i; | |
4016 | ||
77b2aad5 | 4017 | #define TX_WAKE_THRESHOLD 32 |
65c7973f JB |
4018 | if (unlikely(cleaned && netif_carrier_ok(netdev) && |
4019 | E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) { | |
4020 | /* Make sure that anybody stopping the queue after this | |
4021 | * sees the new next_to_clean. | |
4022 | */ | |
4023 | smp_mb(); | |
fcfb1224 | 4024 | if (netif_queue_stopped(netdev)) { |
77b2aad5 | 4025 | netif_wake_queue(netdev); |
fcfb1224 JB |
4026 | ++adapter->restart_queue; |
4027 | } | |
77b2aad5 | 4028 | } |
2648345f | 4029 | |
581d708e | 4030 | if (adapter->detect_tx_hung) { |
2648345f | 4031 | /* Detect a transmit hang in hardware, this serializes the |
1da177e4 LT |
4032 | * check with the clearing of time_stamp and movement of i */ |
4033 | adapter->detect_tx_hung = FALSE; | |
392137fa JK |
4034 | if (tx_ring->buffer_info[eop].dma && |
4035 | time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + | |
7e6c9861 | 4036 | (adapter->tx_timeout_factor * HZ)) |
70b8f1e1 | 4037 | && !(E1000_READ_REG(&adapter->hw, STATUS) & |
392137fa | 4038 | E1000_STATUS_TXOFF)) { |
70b8f1e1 MC |
4039 | |
4040 | /* detected Tx unit hang */ | |
c6963ef5 | 4041 | DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" |
7bfa4816 | 4042 | " Tx Queue <%lu>\n" |
70b8f1e1 MC |
4043 | " TDH <%x>\n" |
4044 | " TDT <%x>\n" | |
4045 | " next_to_use <%x>\n" | |
4046 | " next_to_clean <%x>\n" | |
4047 | "buffer_info[next_to_clean]\n" | |
70b8f1e1 MC |
4048 | " time_stamp <%lx>\n" |
4049 | " next_to_watch <%x>\n" | |
4050 | " jiffies <%lx>\n" | |
4051 | " next_to_watch.status <%x>\n", | |
7bfa4816 JK |
4052 | (unsigned long)((tx_ring - adapter->tx_ring) / |
4053 | sizeof(struct e1000_tx_ring)), | |
581d708e MC |
4054 | readl(adapter->hw.hw_addr + tx_ring->tdh), |
4055 | readl(adapter->hw.hw_addr + tx_ring->tdt), | |
70b8f1e1 | 4056 | tx_ring->next_to_use, |
392137fa JK |
4057 | tx_ring->next_to_clean, |
4058 | tx_ring->buffer_info[eop].time_stamp, | |
70b8f1e1 MC |
4059 | eop, |
4060 | jiffies, | |
4061 | eop_desc->upper.fields.status); | |
1da177e4 | 4062 | netif_stop_queue(netdev); |
70b8f1e1 | 4063 | } |
1da177e4 | 4064 | } |
835bb129 JB |
4065 | adapter->total_tx_bytes += total_tx_bytes; |
4066 | adapter->total_tx_packets += total_tx_packets; | |
1da177e4 LT |
4067 | return cleaned; |
4068 | } | |
4069 | ||
4070 | /** | |
4071 | * e1000_rx_checksum - Receive Checksum Offload for 82543 | |
2d7edb92 MC |
4072 | * @adapter: board private structure |
4073 | * @status_err: receive descriptor status and error fields | |
4074 | * @csum: receive descriptor csum field | |
4075 | * @sk_buff: socket buffer with received data | |
1da177e4 LT |
4076 | **/ |
4077 | ||
e619d523 | 4078 | static void |
1da177e4 | 4079 | e1000_rx_checksum(struct e1000_adapter *adapter, |
2d7edb92 MC |
4080 | uint32_t status_err, uint32_t csum, |
4081 | struct sk_buff *skb) | |
1da177e4 | 4082 | { |
2d7edb92 MC |
4083 | uint16_t status = (uint16_t)status_err; |
4084 | uint8_t errors = (uint8_t)(status_err >> 24); | |
4085 | skb->ip_summed = CHECKSUM_NONE; | |
4086 | ||
1da177e4 | 4087 | /* 82543 or newer only */ |
96838a40 | 4088 | if (unlikely(adapter->hw.mac_type < e1000_82543)) return; |
1da177e4 | 4089 | /* Ignore Checksum bit is set */ |
96838a40 | 4090 | if (unlikely(status & E1000_RXD_STAT_IXSM)) return; |
2d7edb92 | 4091 | /* TCP/UDP checksum error bit is set */ |
96838a40 | 4092 | if (unlikely(errors & E1000_RXD_ERR_TCPE)) { |
1da177e4 | 4093 | /* let the stack verify checksum errors */ |
1da177e4 | 4094 | adapter->hw_csum_err++; |
2d7edb92 MC |
4095 | return; |
4096 | } | |
4097 | /* TCP/UDP Checksum has not been calculated */ | |
96838a40 JB |
4098 | if (adapter->hw.mac_type <= e1000_82547_rev_2) { |
4099 | if (!(status & E1000_RXD_STAT_TCPCS)) | |
2d7edb92 | 4100 | return; |
1da177e4 | 4101 | } else { |
96838a40 | 4102 | if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) |
2d7edb92 MC |
4103 | return; |
4104 | } | |
4105 | /* It must be a TCP or UDP packet with a valid checksum */ | |
4106 | if (likely(status & E1000_RXD_STAT_TCPCS)) { | |
1da177e4 LT |
4107 | /* TCP checksum is good */ |
4108 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
2d7edb92 MC |
4109 | } else if (adapter->hw.mac_type > e1000_82547_rev_2) { |
4110 | /* IP fragment with UDP payload */ | |
4111 | /* Hardware complements the payload checksum, so we undo it | |
4112 | * and then put the value in host order for further stack use. | |
4113 | */ | |
4114 | csum = ntohl(csum ^ 0xFFFF); | |
4115 | skb->csum = csum; | |
84fa7933 | 4116 | skb->ip_summed = CHECKSUM_COMPLETE; |
1da177e4 | 4117 | } |
2d7edb92 | 4118 | adapter->hw_csum_good++; |
1da177e4 LT |
4119 | } |
4120 | ||
4121 | /** | |
2d7edb92 | 4122 | * e1000_clean_rx_irq - Send received data up the network stack; legacy |
1da177e4 LT |
4123 | * @adapter: board private structure |
4124 | **/ | |
4125 | ||
4126 | static boolean_t | |
4127 | #ifdef CONFIG_E1000_NAPI | |
581d708e MC |
4128 | e1000_clean_rx_irq(struct e1000_adapter *adapter, |
4129 | struct e1000_rx_ring *rx_ring, | |
4130 | int *work_done, int work_to_do) | |
1da177e4 | 4131 | #else |
581d708e MC |
4132 | e1000_clean_rx_irq(struct e1000_adapter *adapter, |
4133 | struct e1000_rx_ring *rx_ring) | |
1da177e4 LT |
4134 | #endif |
4135 | { | |
1da177e4 LT |
4136 | struct net_device *netdev = adapter->netdev; |
4137 | struct pci_dev *pdev = adapter->pdev; | |
86c3d59f JB |
4138 | struct e1000_rx_desc *rx_desc, *next_rxd; |
4139 | struct e1000_buffer *buffer_info, *next_buffer; | |
1da177e4 LT |
4140 | unsigned long flags; |
4141 | uint32_t length; | |
4142 | uint8_t last_byte; | |
4143 | unsigned int i; | |
72d64a43 | 4144 | int cleaned_count = 0; |
a1415ee6 | 4145 | boolean_t cleaned = FALSE; |
835bb129 | 4146 | unsigned int total_rx_bytes=0, total_rx_packets=0; |
1da177e4 LT |
4147 | |
4148 | i = rx_ring->next_to_clean; | |
4149 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
b92ff8ee | 4150 | buffer_info = &rx_ring->buffer_info[i]; |
1da177e4 | 4151 | |
b92ff8ee | 4152 | while (rx_desc->status & E1000_RXD_STAT_DD) { |
24f476ee | 4153 | struct sk_buff *skb; |
a292ca6e | 4154 | u8 status; |
90fb5135 | 4155 | |
1da177e4 | 4156 | #ifdef CONFIG_E1000_NAPI |
96838a40 | 4157 | if (*work_done >= work_to_do) |
1da177e4 LT |
4158 | break; |
4159 | (*work_done)++; | |
4160 | #endif | |
a292ca6e | 4161 | status = rx_desc->status; |
b92ff8ee | 4162 | skb = buffer_info->skb; |
86c3d59f JB |
4163 | buffer_info->skb = NULL; |
4164 | ||
30320be8 JK |
4165 | prefetch(skb->data - NET_IP_ALIGN); |
4166 | ||
86c3d59f JB |
4167 | if (++i == rx_ring->count) i = 0; |
4168 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
30320be8 JK |
4169 | prefetch(next_rxd); |
4170 | ||
86c3d59f | 4171 | next_buffer = &rx_ring->buffer_info[i]; |
86c3d59f | 4172 | |
72d64a43 JK |
4173 | cleaned = TRUE; |
4174 | cleaned_count++; | |
a292ca6e JK |
4175 | pci_unmap_single(pdev, |
4176 | buffer_info->dma, | |
4177 | buffer_info->length, | |
1da177e4 LT |
4178 | PCI_DMA_FROMDEVICE); |
4179 | ||
1da177e4 LT |
4180 | length = le16_to_cpu(rx_desc->length); |
4181 | ||
a1415ee6 JK |
4182 | if (unlikely(!(status & E1000_RXD_STAT_EOP))) { |
4183 | /* All receives must fit into a single buffer */ | |
4184 | E1000_DBG("%s: Receive packet consumed multiple" | |
4185 | " buffers\n", netdev->name); | |
864c4e45 | 4186 | /* recycle */ |
8fc897b0 | 4187 | buffer_info->skb = skb; |
1da177e4 LT |
4188 | goto next_desc; |
4189 | } | |
4190 | ||
96838a40 | 4191 | if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { |
1da177e4 | 4192 | last_byte = *(skb->data + length - 1); |
b92ff8ee | 4193 | if (TBI_ACCEPT(&adapter->hw, status, |
1da177e4 LT |
4194 | rx_desc->errors, length, last_byte)) { |
4195 | spin_lock_irqsave(&adapter->stats_lock, flags); | |
a292ca6e JK |
4196 | e1000_tbi_adjust_stats(&adapter->hw, |
4197 | &adapter->stats, | |
1da177e4 LT |
4198 | length, skb->data); |
4199 | spin_unlock_irqrestore(&adapter->stats_lock, | |
4200 | flags); | |
4201 | length--; | |
4202 | } else { | |
9e2feace AK |
4203 | /* recycle */ |
4204 | buffer_info->skb = skb; | |
1da177e4 LT |
4205 | goto next_desc; |
4206 | } | |
1cb5821f | 4207 | } |
1da177e4 | 4208 | |
d2a1e213 JB |
4209 | /* adjust length to remove Ethernet CRC, this must be |
4210 | * done after the TBI_ACCEPT workaround above */ | |
4211 | length -= 4; | |
4212 | ||
835bb129 JB |
4213 | /* probably a little skewed due to removing CRC */ |
4214 | total_rx_bytes += length; | |
4215 | total_rx_packets++; | |
4216 | ||
a292ca6e JK |
4217 | /* code added for copybreak, this should improve |
4218 | * performance for small packets with large amounts | |
4219 | * of reassembly being done in the stack */ | |
1f753861 | 4220 | if (length < copybreak) { |
a292ca6e | 4221 | struct sk_buff *new_skb = |
87f5032e | 4222 | netdev_alloc_skb(netdev, length + NET_IP_ALIGN); |
a292ca6e JK |
4223 | if (new_skb) { |
4224 | skb_reserve(new_skb, NET_IP_ALIGN); | |
27d7ff46 ACM |
4225 | skb_copy_to_linear_data_offset(new_skb, |
4226 | -NET_IP_ALIGN, | |
4227 | (skb->data - | |
4228 | NET_IP_ALIGN), | |
4229 | (length + | |
4230 | NET_IP_ALIGN)); | |
a292ca6e JK |
4231 | /* save the skb in buffer_info as good */ |
4232 | buffer_info->skb = skb; | |
4233 | skb = new_skb; | |
a292ca6e | 4234 | } |
996695de AK |
4235 | /* else just continue with the old one */ |
4236 | } | |
a292ca6e | 4237 | /* end copybreak code */ |
996695de | 4238 | skb_put(skb, length); |
1da177e4 LT |
4239 | |
4240 | /* Receive Checksum Offload */ | |
a292ca6e JK |
4241 | e1000_rx_checksum(adapter, |
4242 | (uint32_t)(status) | | |
2d7edb92 | 4243 | ((uint32_t)(rx_desc->errors) << 24), |
c3d7a3a4 | 4244 | le16_to_cpu(rx_desc->csum), skb); |
96838a40 | 4245 | |
1da177e4 LT |
4246 | skb->protocol = eth_type_trans(skb, netdev); |
4247 | #ifdef CONFIG_E1000_NAPI | |
96838a40 | 4248 | if (unlikely(adapter->vlgrp && |
a292ca6e | 4249 | (status & E1000_RXD_STAT_VP))) { |
1da177e4 | 4250 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
2d7edb92 MC |
4251 | le16_to_cpu(rx_desc->special) & |
4252 | E1000_RXD_SPC_VLAN_MASK); | |
1da177e4 LT |
4253 | } else { |
4254 | netif_receive_skb(skb); | |
4255 | } | |
4256 | #else /* CONFIG_E1000_NAPI */ | |
96838a40 | 4257 | if (unlikely(adapter->vlgrp && |
b92ff8ee | 4258 | (status & E1000_RXD_STAT_VP))) { |
1da177e4 LT |
4259 | vlan_hwaccel_rx(skb, adapter->vlgrp, |
4260 | le16_to_cpu(rx_desc->special) & | |
4261 | E1000_RXD_SPC_VLAN_MASK); | |
4262 | } else { | |
4263 | netif_rx(skb); | |
4264 | } | |
4265 | #endif /* CONFIG_E1000_NAPI */ | |
4266 | netdev->last_rx = jiffies; | |
4267 | ||
4268 | next_desc: | |
4269 | rx_desc->status = 0; | |
1da177e4 | 4270 | |
72d64a43 JK |
4271 | /* return some buffers to hardware, one at a time is too slow */ |
4272 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
4273 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
4274 | cleaned_count = 0; | |
4275 | } | |
4276 | ||
30320be8 | 4277 | /* use prefetched values */ |
86c3d59f JB |
4278 | rx_desc = next_rxd; |
4279 | buffer_info = next_buffer; | |
1da177e4 | 4280 | } |
1da177e4 | 4281 | rx_ring->next_to_clean = i; |
72d64a43 JK |
4282 | |
4283 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
4284 | if (cleaned_count) | |
4285 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
2d7edb92 | 4286 | |
835bb129 JB |
4287 | adapter->total_rx_packets += total_rx_packets; |
4288 | adapter->total_rx_bytes += total_rx_bytes; | |
2d7edb92 MC |
4289 | return cleaned; |
4290 | } | |
4291 | ||
4292 | /** | |
4293 | * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split | |
4294 | * @adapter: board private structure | |
4295 | **/ | |
4296 | ||
4297 | static boolean_t | |
4298 | #ifdef CONFIG_E1000_NAPI | |
581d708e MC |
4299 | e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
4300 | struct e1000_rx_ring *rx_ring, | |
4301 | int *work_done, int work_to_do) | |
2d7edb92 | 4302 | #else |
581d708e MC |
4303 | e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
4304 | struct e1000_rx_ring *rx_ring) | |
2d7edb92 MC |
4305 | #endif |
4306 | { | |
86c3d59f | 4307 | union e1000_rx_desc_packet_split *rx_desc, *next_rxd; |
2d7edb92 MC |
4308 | struct net_device *netdev = adapter->netdev; |
4309 | struct pci_dev *pdev = adapter->pdev; | |
86c3d59f | 4310 | struct e1000_buffer *buffer_info, *next_buffer; |
2d7edb92 MC |
4311 | struct e1000_ps_page *ps_page; |
4312 | struct e1000_ps_page_dma *ps_page_dma; | |
24f476ee | 4313 | struct sk_buff *skb; |
2d7edb92 MC |
4314 | unsigned int i, j; |
4315 | uint32_t length, staterr; | |
72d64a43 | 4316 | int cleaned_count = 0; |
2d7edb92 | 4317 | boolean_t cleaned = FALSE; |
835bb129 | 4318 | unsigned int total_rx_bytes=0, total_rx_packets=0; |
2d7edb92 MC |
4319 | |
4320 | i = rx_ring->next_to_clean; | |
4321 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
683a38f3 | 4322 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
9e2feace | 4323 | buffer_info = &rx_ring->buffer_info[i]; |
2d7edb92 | 4324 | |
96838a40 | 4325 | while (staterr & E1000_RXD_STAT_DD) { |
2d7edb92 MC |
4326 | ps_page = &rx_ring->ps_page[i]; |
4327 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
4328 | #ifdef CONFIG_E1000_NAPI | |
96838a40 | 4329 | if (unlikely(*work_done >= work_to_do)) |
2d7edb92 MC |
4330 | break; |
4331 | (*work_done)++; | |
4332 | #endif | |
86c3d59f JB |
4333 | skb = buffer_info->skb; |
4334 | ||
30320be8 JK |
4335 | /* in the packet split case this is header only */ |
4336 | prefetch(skb->data - NET_IP_ALIGN); | |
4337 | ||
86c3d59f JB |
4338 | if (++i == rx_ring->count) i = 0; |
4339 | next_rxd = E1000_RX_DESC_PS(*rx_ring, i); | |
30320be8 JK |
4340 | prefetch(next_rxd); |
4341 | ||
86c3d59f | 4342 | next_buffer = &rx_ring->buffer_info[i]; |
86c3d59f | 4343 | |
2d7edb92 | 4344 | cleaned = TRUE; |
72d64a43 | 4345 | cleaned_count++; |
2d7edb92 MC |
4346 | pci_unmap_single(pdev, buffer_info->dma, |
4347 | buffer_info->length, | |
4348 | PCI_DMA_FROMDEVICE); | |
4349 | ||
96838a40 | 4350 | if (unlikely(!(staterr & E1000_RXD_STAT_EOP))) { |
2d7edb92 MC |
4351 | E1000_DBG("%s: Packet Split buffers didn't pick up" |
4352 | " the full packet\n", netdev->name); | |
4353 | dev_kfree_skb_irq(skb); | |
4354 | goto next_desc; | |
4355 | } | |
1da177e4 | 4356 | |
96838a40 | 4357 | if (unlikely(staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK)) { |
2d7edb92 MC |
4358 | dev_kfree_skb_irq(skb); |
4359 | goto next_desc; | |
4360 | } | |
4361 | ||
4362 | length = le16_to_cpu(rx_desc->wb.middle.length0); | |
4363 | ||
96838a40 | 4364 | if (unlikely(!length)) { |
2d7edb92 MC |
4365 | E1000_DBG("%s: Last part of the packet spanning" |
4366 | " multiple descriptors\n", netdev->name); | |
4367 | dev_kfree_skb_irq(skb); | |
4368 | goto next_desc; | |
4369 | } | |
4370 | ||
4371 | /* Good Receive */ | |
4372 | skb_put(skb, length); | |
4373 | ||
dc7c6add JK |
4374 | { |
4375 | /* this looks ugly, but it seems compiler issues make it | |
4376 | more efficient than reusing j */ | |
4377 | int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]); | |
4378 | ||
4379 | /* page alloc/put takes too long and effects small packet | |
4380 | * throughput, so unsplit small packets and save the alloc/put*/ | |
1f753861 | 4381 | if (l1 && (l1 <= copybreak) && ((length + l1) <= adapter->rx_ps_bsize0)) { |
dc7c6add | 4382 | u8 *vaddr; |
76c224bc | 4383 | /* there is no documentation about how to call |
dc7c6add JK |
4384 | * kmap_atomic, so we can't hold the mapping |
4385 | * very long */ | |
4386 | pci_dma_sync_single_for_cpu(pdev, | |
4387 | ps_page_dma->ps_page_dma[0], | |
4388 | PAGE_SIZE, | |
4389 | PCI_DMA_FROMDEVICE); | |
4390 | vaddr = kmap_atomic(ps_page->ps_page[0], | |
4391 | KM_SKB_DATA_SOFTIRQ); | |
27a884dc | 4392 | memcpy(skb_tail_pointer(skb), vaddr, l1); |
dc7c6add JK |
4393 | kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ); |
4394 | pci_dma_sync_single_for_device(pdev, | |
4395 | ps_page_dma->ps_page_dma[0], | |
4396 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
f235a2ab AK |
4397 | /* remove the CRC */ |
4398 | l1 -= 4; | |
dc7c6add | 4399 | skb_put(skb, l1); |
dc7c6add JK |
4400 | goto copydone; |
4401 | } /* if */ | |
4402 | } | |
90fb5135 | 4403 | |
96838a40 | 4404 | for (j = 0; j < adapter->rx_ps_pages; j++) { |
30320be8 | 4405 | if (!(length= le16_to_cpu(rx_desc->wb.upper.length[j]))) |
2d7edb92 | 4406 | break; |
2d7edb92 MC |
4407 | pci_unmap_page(pdev, ps_page_dma->ps_page_dma[j], |
4408 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
4409 | ps_page_dma->ps_page_dma[j] = 0; | |
329bfd0b JK |
4410 | skb_fill_page_desc(skb, j, ps_page->ps_page[j], 0, |
4411 | length); | |
2d7edb92 | 4412 | ps_page->ps_page[j] = NULL; |
2d7edb92 MC |
4413 | skb->len += length; |
4414 | skb->data_len += length; | |
5d51b80f | 4415 | skb->truesize += length; |
2d7edb92 MC |
4416 | } |
4417 | ||
f235a2ab AK |
4418 | /* strip the ethernet crc, problem is we're using pages now so |
4419 | * this whole operation can get a little cpu intensive */ | |
4420 | pskb_trim(skb, skb->len - 4); | |
4421 | ||
dc7c6add | 4422 | copydone: |
835bb129 JB |
4423 | total_rx_bytes += skb->len; |
4424 | total_rx_packets++; | |
4425 | ||
2d7edb92 | 4426 | e1000_rx_checksum(adapter, staterr, |
c3d7a3a4 | 4427 | le16_to_cpu(rx_desc->wb.lower.hi_dword.csum_ip.csum), skb); |
2d7edb92 MC |
4428 | skb->protocol = eth_type_trans(skb, netdev); |
4429 | ||
96838a40 | 4430 | if (likely(rx_desc->wb.upper.header_status & |
c3d7a3a4 | 4431 | cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP))) |
e4c811c9 | 4432 | adapter->rx_hdr_split++; |
2d7edb92 | 4433 | #ifdef CONFIG_E1000_NAPI |
96838a40 | 4434 | if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) { |
2d7edb92 | 4435 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
683a38f3 MC |
4436 | le16_to_cpu(rx_desc->wb.middle.vlan) & |
4437 | E1000_RXD_SPC_VLAN_MASK); | |
2d7edb92 MC |
4438 | } else { |
4439 | netif_receive_skb(skb); | |
4440 | } | |
4441 | #else /* CONFIG_E1000_NAPI */ | |
96838a40 | 4442 | if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) { |
2d7edb92 | 4443 | vlan_hwaccel_rx(skb, adapter->vlgrp, |
683a38f3 MC |
4444 | le16_to_cpu(rx_desc->wb.middle.vlan) & |
4445 | E1000_RXD_SPC_VLAN_MASK); | |
2d7edb92 MC |
4446 | } else { |
4447 | netif_rx(skb); | |
4448 | } | |
4449 | #endif /* CONFIG_E1000_NAPI */ | |
4450 | netdev->last_rx = jiffies; | |
4451 | ||
4452 | next_desc: | |
c3d7a3a4 | 4453 | rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF); |
2d7edb92 | 4454 | buffer_info->skb = NULL; |
2d7edb92 | 4455 | |
72d64a43 JK |
4456 | /* return some buffers to hardware, one at a time is too slow */ |
4457 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
4458 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
4459 | cleaned_count = 0; | |
4460 | } | |
4461 | ||
30320be8 | 4462 | /* use prefetched values */ |
86c3d59f JB |
4463 | rx_desc = next_rxd; |
4464 | buffer_info = next_buffer; | |
4465 | ||
683a38f3 | 4466 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
2d7edb92 MC |
4467 | } |
4468 | rx_ring->next_to_clean = i; | |
72d64a43 JK |
4469 | |
4470 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
4471 | if (cleaned_count) | |
4472 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
1da177e4 | 4473 | |
835bb129 JB |
4474 | adapter->total_rx_packets += total_rx_packets; |
4475 | adapter->total_rx_bytes += total_rx_bytes; | |
1da177e4 LT |
4476 | return cleaned; |
4477 | } | |
4478 | ||
4479 | /** | |
2d7edb92 | 4480 | * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
1da177e4 LT |
4481 | * @adapter: address of board private structure |
4482 | **/ | |
4483 | ||
4484 | static void | |
581d708e | 4485 | e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
72d64a43 | 4486 | struct e1000_rx_ring *rx_ring, |
a292ca6e | 4487 | int cleaned_count) |
1da177e4 | 4488 | { |
1da177e4 LT |
4489 | struct net_device *netdev = adapter->netdev; |
4490 | struct pci_dev *pdev = adapter->pdev; | |
4491 | struct e1000_rx_desc *rx_desc; | |
4492 | struct e1000_buffer *buffer_info; | |
4493 | struct sk_buff *skb; | |
2648345f MC |
4494 | unsigned int i; |
4495 | unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN; | |
1da177e4 LT |
4496 | |
4497 | i = rx_ring->next_to_use; | |
4498 | buffer_info = &rx_ring->buffer_info[i]; | |
4499 | ||
a292ca6e | 4500 | while (cleaned_count--) { |
ca6f7224 CH |
4501 | skb = buffer_info->skb; |
4502 | if (skb) { | |
a292ca6e JK |
4503 | skb_trim(skb, 0); |
4504 | goto map_skb; | |
4505 | } | |
4506 | ||
ca6f7224 | 4507 | skb = netdev_alloc_skb(netdev, bufsz); |
96838a40 | 4508 | if (unlikely(!skb)) { |
1da177e4 | 4509 | /* Better luck next round */ |
72d64a43 | 4510 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
4511 | break; |
4512 | } | |
4513 | ||
2648345f | 4514 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
4515 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
4516 | struct sk_buff *oldskb = skb; | |
2648345f MC |
4517 | DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes " |
4518 | "at %p\n", bufsz, skb->data); | |
4519 | /* Try again, without freeing the previous */ | |
87f5032e | 4520 | skb = netdev_alloc_skb(netdev, bufsz); |
2648345f | 4521 | /* Failed allocation, critical failure */ |
1da177e4 LT |
4522 | if (!skb) { |
4523 | dev_kfree_skb(oldskb); | |
4524 | break; | |
4525 | } | |
2648345f | 4526 | |
1da177e4 LT |
4527 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
4528 | /* give up */ | |
4529 | dev_kfree_skb(skb); | |
4530 | dev_kfree_skb(oldskb); | |
4531 | break; /* while !buffer_info->skb */ | |
1da177e4 | 4532 | } |
ca6f7224 CH |
4533 | |
4534 | /* Use new allocation */ | |
4535 | dev_kfree_skb(oldskb); | |
1da177e4 | 4536 | } |
1da177e4 LT |
4537 | /* Make buffer alignment 2 beyond a 16 byte boundary |
4538 | * this will result in a 16 byte aligned IP header after | |
4539 | * the 14 byte MAC header is removed | |
4540 | */ | |
4541 | skb_reserve(skb, NET_IP_ALIGN); | |
4542 | ||
1da177e4 LT |
4543 | buffer_info->skb = skb; |
4544 | buffer_info->length = adapter->rx_buffer_len; | |
a292ca6e | 4545 | map_skb: |
1da177e4 LT |
4546 | buffer_info->dma = pci_map_single(pdev, |
4547 | skb->data, | |
4548 | adapter->rx_buffer_len, | |
4549 | PCI_DMA_FROMDEVICE); | |
4550 | ||
2648345f MC |
4551 | /* Fix for errata 23, can't cross 64kB boundary */ |
4552 | if (!e1000_check_64k_bound(adapter, | |
4553 | (void *)(unsigned long)buffer_info->dma, | |
4554 | adapter->rx_buffer_len)) { | |
4555 | DPRINTK(RX_ERR, ERR, | |
4556 | "dma align check failed: %u bytes at %p\n", | |
4557 | adapter->rx_buffer_len, | |
4558 | (void *)(unsigned long)buffer_info->dma); | |
1da177e4 LT |
4559 | dev_kfree_skb(skb); |
4560 | buffer_info->skb = NULL; | |
4561 | ||
2648345f | 4562 | pci_unmap_single(pdev, buffer_info->dma, |
1da177e4 LT |
4563 | adapter->rx_buffer_len, |
4564 | PCI_DMA_FROMDEVICE); | |
4565 | ||
4566 | break; /* while !buffer_info->skb */ | |
4567 | } | |
1da177e4 LT |
4568 | rx_desc = E1000_RX_DESC(*rx_ring, i); |
4569 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
4570 | ||
96838a40 JB |
4571 | if (unlikely(++i == rx_ring->count)) |
4572 | i = 0; | |
1da177e4 LT |
4573 | buffer_info = &rx_ring->buffer_info[i]; |
4574 | } | |
4575 | ||
b92ff8ee JB |
4576 | if (likely(rx_ring->next_to_use != i)) { |
4577 | rx_ring->next_to_use = i; | |
4578 | if (unlikely(i-- == 0)) | |
4579 | i = (rx_ring->count - 1); | |
4580 | ||
4581 | /* Force memory writes to complete before letting h/w | |
4582 | * know there are new descriptors to fetch. (Only | |
4583 | * applicable for weak-ordered memory model archs, | |
4584 | * such as IA-64). */ | |
4585 | wmb(); | |
4586 | writel(i, adapter->hw.hw_addr + rx_ring->rdt); | |
4587 | } | |
1da177e4 LT |
4588 | } |
4589 | ||
2d7edb92 MC |
4590 | /** |
4591 | * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split | |
4592 | * @adapter: address of board private structure | |
4593 | **/ | |
4594 | ||
4595 | static void | |
581d708e | 4596 | e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, |
72d64a43 JK |
4597 | struct e1000_rx_ring *rx_ring, |
4598 | int cleaned_count) | |
2d7edb92 | 4599 | { |
2d7edb92 MC |
4600 | struct net_device *netdev = adapter->netdev; |
4601 | struct pci_dev *pdev = adapter->pdev; | |
4602 | union e1000_rx_desc_packet_split *rx_desc; | |
4603 | struct e1000_buffer *buffer_info; | |
4604 | struct e1000_ps_page *ps_page; | |
4605 | struct e1000_ps_page_dma *ps_page_dma; | |
4606 | struct sk_buff *skb; | |
4607 | unsigned int i, j; | |
4608 | ||
4609 | i = rx_ring->next_to_use; | |
4610 | buffer_info = &rx_ring->buffer_info[i]; | |
4611 | ps_page = &rx_ring->ps_page[i]; | |
4612 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
4613 | ||
72d64a43 | 4614 | while (cleaned_count--) { |
2d7edb92 MC |
4615 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
4616 | ||
96838a40 | 4617 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
e4c811c9 MC |
4618 | if (j < adapter->rx_ps_pages) { |
4619 | if (likely(!ps_page->ps_page[j])) { | |
4620 | ps_page->ps_page[j] = | |
4621 | alloc_page(GFP_ATOMIC); | |
b92ff8ee JB |
4622 | if (unlikely(!ps_page->ps_page[j])) { |
4623 | adapter->alloc_rx_buff_failed++; | |
e4c811c9 | 4624 | goto no_buffers; |
b92ff8ee | 4625 | } |
e4c811c9 MC |
4626 | ps_page_dma->ps_page_dma[j] = |
4627 | pci_map_page(pdev, | |
4628 | ps_page->ps_page[j], | |
4629 | 0, PAGE_SIZE, | |
4630 | PCI_DMA_FROMDEVICE); | |
4631 | } | |
4632 | /* Refresh the desc even if buffer_addrs didn't | |
96838a40 | 4633 | * change because each write-back erases |
e4c811c9 MC |
4634 | * this info. |
4635 | */ | |
4636 | rx_desc->read.buffer_addr[j+1] = | |
4637 | cpu_to_le64(ps_page_dma->ps_page_dma[j]); | |
4638 | } else | |
4639 | rx_desc->read.buffer_addr[j+1] = ~0; | |
2d7edb92 MC |
4640 | } |
4641 | ||
87f5032e | 4642 | skb = netdev_alloc_skb(netdev, |
90fb5135 | 4643 | adapter->rx_ps_bsize0 + NET_IP_ALIGN); |
2d7edb92 | 4644 | |
b92ff8ee JB |
4645 | if (unlikely(!skb)) { |
4646 | adapter->alloc_rx_buff_failed++; | |
2d7edb92 | 4647 | break; |
b92ff8ee | 4648 | } |
2d7edb92 MC |
4649 | |
4650 | /* Make buffer alignment 2 beyond a 16 byte boundary | |
4651 | * this will result in a 16 byte aligned IP header after | |
4652 | * the 14 byte MAC header is removed | |
4653 | */ | |
4654 | skb_reserve(skb, NET_IP_ALIGN); | |
4655 | ||
2d7edb92 MC |
4656 | buffer_info->skb = skb; |
4657 | buffer_info->length = adapter->rx_ps_bsize0; | |
4658 | buffer_info->dma = pci_map_single(pdev, skb->data, | |
4659 | adapter->rx_ps_bsize0, | |
4660 | PCI_DMA_FROMDEVICE); | |
4661 | ||
4662 | rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); | |
4663 | ||
96838a40 | 4664 | if (unlikely(++i == rx_ring->count)) i = 0; |
2d7edb92 MC |
4665 | buffer_info = &rx_ring->buffer_info[i]; |
4666 | ps_page = &rx_ring->ps_page[i]; | |
4667 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
4668 | } | |
4669 | ||
4670 | no_buffers: | |
b92ff8ee JB |
4671 | if (likely(rx_ring->next_to_use != i)) { |
4672 | rx_ring->next_to_use = i; | |
4673 | if (unlikely(i-- == 0)) i = (rx_ring->count - 1); | |
4674 | ||
4675 | /* Force memory writes to complete before letting h/w | |
4676 | * know there are new descriptors to fetch. (Only | |
4677 | * applicable for weak-ordered memory model archs, | |
4678 | * such as IA-64). */ | |
4679 | wmb(); | |
4680 | /* Hardware increments by 16 bytes, but packet split | |
4681 | * descriptors are 32 bytes...so we increment tail | |
4682 | * twice as much. | |
4683 | */ | |
4684 | writel(i<<1, adapter->hw.hw_addr + rx_ring->rdt); | |
4685 | } | |
2d7edb92 MC |
4686 | } |
4687 | ||
1da177e4 LT |
4688 | /** |
4689 | * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. | |
4690 | * @adapter: | |
4691 | **/ | |
4692 | ||
4693 | static void | |
4694 | e1000_smartspeed(struct e1000_adapter *adapter) | |
4695 | { | |
4696 | uint16_t phy_status; | |
4697 | uint16_t phy_ctrl; | |
4698 | ||
96838a40 | 4699 | if ((adapter->hw.phy_type != e1000_phy_igp) || !adapter->hw.autoneg || |
1da177e4 LT |
4700 | !(adapter->hw.autoneg_advertised & ADVERTISE_1000_FULL)) |
4701 | return; | |
4702 | ||
96838a40 | 4703 | if (adapter->smartspeed == 0) { |
1da177e4 LT |
4704 | /* If Master/Slave config fault is asserted twice, |
4705 | * we assume back-to-back */ | |
4706 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); | |
96838a40 | 4707 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1da177e4 | 4708 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); |
96838a40 | 4709 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1da177e4 | 4710 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); |
96838a40 | 4711 | if (phy_ctrl & CR_1000T_MS_ENABLE) { |
1da177e4 LT |
4712 | phy_ctrl &= ~CR_1000T_MS_ENABLE; |
4713 | e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, | |
4714 | phy_ctrl); | |
4715 | adapter->smartspeed++; | |
96838a40 | 4716 | if (!e1000_phy_setup_autoneg(&adapter->hw) && |
1da177e4 LT |
4717 | !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, |
4718 | &phy_ctrl)) { | |
4719 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
4720 | MII_CR_RESTART_AUTO_NEG); | |
4721 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, | |
4722 | phy_ctrl); | |
4723 | } | |
4724 | } | |
4725 | return; | |
96838a40 | 4726 | } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { |
1da177e4 LT |
4727 | /* If still no link, perhaps using 2/3 pair cable */ |
4728 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); | |
4729 | phy_ctrl |= CR_1000T_MS_ENABLE; | |
4730 | e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_ctrl); | |
96838a40 | 4731 | if (!e1000_phy_setup_autoneg(&adapter->hw) && |
1da177e4 LT |
4732 | !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_ctrl)) { |
4733 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
4734 | MII_CR_RESTART_AUTO_NEG); | |
4735 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, phy_ctrl); | |
4736 | } | |
4737 | } | |
4738 | /* Restart process after E1000_SMARTSPEED_MAX iterations */ | |
96838a40 | 4739 | if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX) |
1da177e4 LT |
4740 | adapter->smartspeed = 0; |
4741 | } | |
4742 | ||
4743 | /** | |
4744 | * e1000_ioctl - | |
4745 | * @netdev: | |
4746 | * @ifreq: | |
4747 | * @cmd: | |
4748 | **/ | |
4749 | ||
4750 | static int | |
4751 | e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
4752 | { | |
4753 | switch (cmd) { | |
4754 | case SIOCGMIIPHY: | |
4755 | case SIOCGMIIREG: | |
4756 | case SIOCSMIIREG: | |
4757 | return e1000_mii_ioctl(netdev, ifr, cmd); | |
4758 | default: | |
4759 | return -EOPNOTSUPP; | |
4760 | } | |
4761 | } | |
4762 | ||
4763 | /** | |
4764 | * e1000_mii_ioctl - | |
4765 | * @netdev: | |
4766 | * @ifreq: | |
4767 | * @cmd: | |
4768 | **/ | |
4769 | ||
4770 | static int | |
4771 | e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
4772 | { | |
60490fe0 | 4773 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
4774 | struct mii_ioctl_data *data = if_mii(ifr); |
4775 | int retval; | |
4776 | uint16_t mii_reg; | |
4777 | uint16_t spddplx; | |
97876fc6 | 4778 | unsigned long flags; |
1da177e4 | 4779 | |
96838a40 | 4780 | if (adapter->hw.media_type != e1000_media_type_copper) |
1da177e4 LT |
4781 | return -EOPNOTSUPP; |
4782 | ||
4783 | switch (cmd) { | |
4784 | case SIOCGMIIPHY: | |
4785 | data->phy_id = adapter->hw.phy_addr; | |
4786 | break; | |
4787 | case SIOCGMIIREG: | |
96838a40 | 4788 | if (!capable(CAP_NET_ADMIN)) |
1da177e4 | 4789 | return -EPERM; |
97876fc6 | 4790 | spin_lock_irqsave(&adapter->stats_lock, flags); |
96838a40 | 4791 | if (e1000_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
97876fc6 MC |
4792 | &data->val_out)) { |
4793 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4794 | return -EIO; |
97876fc6 MC |
4795 | } |
4796 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 LT |
4797 | break; |
4798 | case SIOCSMIIREG: | |
96838a40 | 4799 | if (!capable(CAP_NET_ADMIN)) |
1da177e4 | 4800 | return -EPERM; |
96838a40 | 4801 | if (data->reg_num & ~(0x1F)) |
1da177e4 LT |
4802 | return -EFAULT; |
4803 | mii_reg = data->val_in; | |
97876fc6 | 4804 | spin_lock_irqsave(&adapter->stats_lock, flags); |
96838a40 | 4805 | if (e1000_write_phy_reg(&adapter->hw, data->reg_num, |
97876fc6 MC |
4806 | mii_reg)) { |
4807 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4808 | return -EIO; |
97876fc6 | 4809 | } |
dc86d32a | 4810 | if (adapter->hw.media_type == e1000_media_type_copper) { |
1da177e4 LT |
4811 | switch (data->reg_num) { |
4812 | case PHY_CTRL: | |
96838a40 | 4813 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4814 | break; |
96838a40 | 4815 | if (mii_reg & MII_CR_AUTO_NEG_EN) { |
1da177e4 LT |
4816 | adapter->hw.autoneg = 1; |
4817 | adapter->hw.autoneg_advertised = 0x2F; | |
4818 | } else { | |
4819 | if (mii_reg & 0x40) | |
4820 | spddplx = SPEED_1000; | |
4821 | else if (mii_reg & 0x2000) | |
4822 | spddplx = SPEED_100; | |
4823 | else | |
4824 | spddplx = SPEED_10; | |
4825 | spddplx += (mii_reg & 0x100) | |
cb764326 JK |
4826 | ? DUPLEX_FULL : |
4827 | DUPLEX_HALF; | |
1da177e4 LT |
4828 | retval = e1000_set_spd_dplx(adapter, |
4829 | spddplx); | |
96838a40 | 4830 | if (retval) { |
97876fc6 | 4831 | spin_unlock_irqrestore( |
96838a40 | 4832 | &adapter->stats_lock, |
97876fc6 | 4833 | flags); |
1da177e4 | 4834 | return retval; |
97876fc6 | 4835 | } |
1da177e4 | 4836 | } |
2db10a08 AK |
4837 | if (netif_running(adapter->netdev)) |
4838 | e1000_reinit_locked(adapter); | |
4839 | else | |
1da177e4 LT |
4840 | e1000_reset(adapter); |
4841 | break; | |
4842 | case M88E1000_PHY_SPEC_CTRL: | |
4843 | case M88E1000_EXT_PHY_SPEC_CTRL: | |
96838a40 | 4844 | if (e1000_phy_reset(&adapter->hw)) { |
97876fc6 MC |
4845 | spin_unlock_irqrestore( |
4846 | &adapter->stats_lock, flags); | |
1da177e4 | 4847 | return -EIO; |
97876fc6 | 4848 | } |
1da177e4 LT |
4849 | break; |
4850 | } | |
4851 | } else { | |
4852 | switch (data->reg_num) { | |
4853 | case PHY_CTRL: | |
96838a40 | 4854 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4855 | break; |
2db10a08 AK |
4856 | if (netif_running(adapter->netdev)) |
4857 | e1000_reinit_locked(adapter); | |
4858 | else | |
1da177e4 LT |
4859 | e1000_reset(adapter); |
4860 | break; | |
4861 | } | |
4862 | } | |
97876fc6 | 4863 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
1da177e4 LT |
4864 | break; |
4865 | default: | |
4866 | return -EOPNOTSUPP; | |
4867 | } | |
4868 | return E1000_SUCCESS; | |
4869 | } | |
4870 | ||
4871 | void | |
4872 | e1000_pci_set_mwi(struct e1000_hw *hw) | |
4873 | { | |
4874 | struct e1000_adapter *adapter = hw->back; | |
2648345f | 4875 | int ret_val = pci_set_mwi(adapter->pdev); |
1da177e4 | 4876 | |
96838a40 | 4877 | if (ret_val) |
2648345f | 4878 | DPRINTK(PROBE, ERR, "Error in setting MWI\n"); |
1da177e4 LT |
4879 | } |
4880 | ||
4881 | void | |
4882 | e1000_pci_clear_mwi(struct e1000_hw *hw) | |
4883 | { | |
4884 | struct e1000_adapter *adapter = hw->back; | |
4885 | ||
4886 | pci_clear_mwi(adapter->pdev); | |
4887 | } | |
4888 | ||
4889 | void | |
4890 | e1000_read_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) | |
4891 | { | |
4892 | struct e1000_adapter *adapter = hw->back; | |
4893 | ||
4894 | pci_read_config_word(adapter->pdev, reg, value); | |
4895 | } | |
4896 | ||
4897 | void | |
4898 | e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) | |
4899 | { | |
4900 | struct e1000_adapter *adapter = hw->back; | |
4901 | ||
4902 | pci_write_config_word(adapter->pdev, reg, *value); | |
4903 | } | |
4904 | ||
caeccb68 JK |
4905 | int32_t |
4906 | e1000_read_pcie_cap_reg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) | |
4907 | { | |
4908 | struct e1000_adapter *adapter = hw->back; | |
4909 | uint16_t cap_offset; | |
4910 | ||
4911 | cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP); | |
4912 | if (!cap_offset) | |
4913 | return -E1000_ERR_CONFIG; | |
4914 | ||
4915 | pci_read_config_word(adapter->pdev, cap_offset + reg, value); | |
4916 | ||
4917 | return E1000_SUCCESS; | |
4918 | } | |
4919 | ||
1da177e4 LT |
4920 | void |
4921 | e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value) | |
4922 | { | |
4923 | outl(value, port); | |
4924 | } | |
4925 | ||
4926 | static void | |
4927 | e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) | |
4928 | { | |
60490fe0 | 4929 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
4930 | uint32_t ctrl, rctl; |
4931 | ||
4932 | e1000_irq_disable(adapter); | |
4933 | adapter->vlgrp = grp; | |
4934 | ||
96838a40 | 4935 | if (grp) { |
1da177e4 LT |
4936 | /* enable VLAN tag insert/strip */ |
4937 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
4938 | ctrl |= E1000_CTRL_VME; | |
4939 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
4940 | ||
cd94dd0b | 4941 | if (adapter->hw.mac_type != e1000_ich8lan) { |
90fb5135 AK |
4942 | /* enable VLAN receive filtering */ |
4943 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
4944 | rctl |= E1000_RCTL_VFE; | |
4945 | rctl &= ~E1000_RCTL_CFIEN; | |
4946 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
4947 | e1000_update_mng_vlan(adapter); | |
cd94dd0b | 4948 | } |
1da177e4 LT |
4949 | } else { |
4950 | /* disable VLAN tag insert/strip */ | |
4951 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
4952 | ctrl &= ~E1000_CTRL_VME; | |
4953 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
4954 | ||
cd94dd0b | 4955 | if (adapter->hw.mac_type != e1000_ich8lan) { |
90fb5135 AK |
4956 | /* disable VLAN filtering */ |
4957 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
4958 | rctl &= ~E1000_RCTL_VFE; | |
4959 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
4960 | if (adapter->mng_vlan_id != | |
4961 | (uint16_t)E1000_MNG_VLAN_NONE) { | |
4962 | e1000_vlan_rx_kill_vid(netdev, | |
4963 | adapter->mng_vlan_id); | |
4964 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
4965 | } | |
cd94dd0b | 4966 | } |
1da177e4 LT |
4967 | } |
4968 | ||
4969 | e1000_irq_enable(adapter); | |
4970 | } | |
4971 | ||
4972 | static void | |
4973 | e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid) | |
4974 | { | |
60490fe0 | 4975 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 4976 | uint32_t vfta, index; |
96838a40 JB |
4977 | |
4978 | if ((adapter->hw.mng_cookie.status & | |
4979 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && | |
4980 | (vid == adapter->mng_vlan_id)) | |
2d7edb92 | 4981 | return; |
1da177e4 LT |
4982 | /* add VID to filter table */ |
4983 | index = (vid >> 5) & 0x7F; | |
4984 | vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
4985 | vfta |= (1 << (vid & 0x1F)); | |
4986 | e1000_write_vfta(&adapter->hw, index, vfta); | |
4987 | } | |
4988 | ||
4989 | static void | |
4990 | e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid) | |
4991 | { | |
60490fe0 | 4992 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
4993 | uint32_t vfta, index; |
4994 | ||
4995 | e1000_irq_disable(adapter); | |
5c15bdec | 4996 | vlan_group_set_device(adapter->vlgrp, vid, NULL); |
1da177e4 LT |
4997 | e1000_irq_enable(adapter); |
4998 | ||
96838a40 JB |
4999 | if ((adapter->hw.mng_cookie.status & |
5000 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && | |
ff147013 JK |
5001 | (vid == adapter->mng_vlan_id)) { |
5002 | /* release control to f/w */ | |
5003 | e1000_release_hw_control(adapter); | |
2d7edb92 | 5004 | return; |
ff147013 JK |
5005 | } |
5006 | ||
1da177e4 LT |
5007 | /* remove VID from filter table */ |
5008 | index = (vid >> 5) & 0x7F; | |
5009 | vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
5010 | vfta &= ~(1 << (vid & 0x1F)); | |
5011 | e1000_write_vfta(&adapter->hw, index, vfta); | |
5012 | } | |
5013 | ||
5014 | static void | |
5015 | e1000_restore_vlan(struct e1000_adapter *adapter) | |
5016 | { | |
5017 | e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
5018 | ||
96838a40 | 5019 | if (adapter->vlgrp) { |
1da177e4 | 5020 | uint16_t vid; |
96838a40 | 5021 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { |
5c15bdec | 5022 | if (!vlan_group_get_device(adapter->vlgrp, vid)) |
1da177e4 LT |
5023 | continue; |
5024 | e1000_vlan_rx_add_vid(adapter->netdev, vid); | |
5025 | } | |
5026 | } | |
5027 | } | |
5028 | ||
5029 | int | |
5030 | e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx) | |
5031 | { | |
5032 | adapter->hw.autoneg = 0; | |
5033 | ||
6921368f | 5034 | /* Fiber NICs only allow 1000 gbps Full duplex */ |
96838a40 | 5035 | if ((adapter->hw.media_type == e1000_media_type_fiber) && |
6921368f MC |
5036 | spddplx != (SPEED_1000 + DUPLEX_FULL)) { |
5037 | DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); | |
5038 | return -EINVAL; | |
5039 | } | |
5040 | ||
96838a40 | 5041 | switch (spddplx) { |
1da177e4 LT |
5042 | case SPEED_10 + DUPLEX_HALF: |
5043 | adapter->hw.forced_speed_duplex = e1000_10_half; | |
5044 | break; | |
5045 | case SPEED_10 + DUPLEX_FULL: | |
5046 | adapter->hw.forced_speed_duplex = e1000_10_full; | |
5047 | break; | |
5048 | case SPEED_100 + DUPLEX_HALF: | |
5049 | adapter->hw.forced_speed_duplex = e1000_100_half; | |
5050 | break; | |
5051 | case SPEED_100 + DUPLEX_FULL: | |
5052 | adapter->hw.forced_speed_duplex = e1000_100_full; | |
5053 | break; | |
5054 | case SPEED_1000 + DUPLEX_FULL: | |
5055 | adapter->hw.autoneg = 1; | |
5056 | adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL; | |
5057 | break; | |
5058 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ | |
5059 | default: | |
2648345f | 5060 | DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); |
1da177e4 LT |
5061 | return -EINVAL; |
5062 | } | |
5063 | return 0; | |
5064 | } | |
5065 | ||
1da177e4 | 5066 | static int |
829ca9a3 | 5067 | e1000_suspend(struct pci_dev *pdev, pm_message_t state) |
1da177e4 LT |
5068 | { |
5069 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 5070 | struct e1000_adapter *adapter = netdev_priv(netdev); |
0fccd0e9 | 5071 | uint32_t ctrl, ctrl_ext, rctl, status; |
1da177e4 | 5072 | uint32_t wufc = adapter->wol; |
6fdfef16 | 5073 | #ifdef CONFIG_PM |
240b1710 | 5074 | int retval = 0; |
6fdfef16 | 5075 | #endif |
1da177e4 LT |
5076 | |
5077 | netif_device_detach(netdev); | |
5078 | ||
2db10a08 AK |
5079 | if (netif_running(netdev)) { |
5080 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); | |
1da177e4 | 5081 | e1000_down(adapter); |
2db10a08 | 5082 | } |
1da177e4 | 5083 | |
2f82665f | 5084 | #ifdef CONFIG_PM |
1d33e9c6 | 5085 | retval = pci_save_state(pdev); |
2f82665f JB |
5086 | if (retval) |
5087 | return retval; | |
5088 | #endif | |
5089 | ||
1da177e4 | 5090 | status = E1000_READ_REG(&adapter->hw, STATUS); |
96838a40 | 5091 | if (status & E1000_STATUS_LU) |
1da177e4 LT |
5092 | wufc &= ~E1000_WUFC_LNKC; |
5093 | ||
96838a40 | 5094 | if (wufc) { |
1da177e4 LT |
5095 | e1000_setup_rctl(adapter); |
5096 | e1000_set_multi(netdev); | |
5097 | ||
5098 | /* turn on all-multi mode if wake on multicast is enabled */ | |
120cd576 | 5099 | if (wufc & E1000_WUFC_MC) { |
1da177e4 LT |
5100 | rctl = E1000_READ_REG(&adapter->hw, RCTL); |
5101 | rctl |= E1000_RCTL_MPE; | |
5102 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
5103 | } | |
5104 | ||
96838a40 | 5105 | if (adapter->hw.mac_type >= e1000_82540) { |
1da177e4 LT |
5106 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); |
5107 | /* advertise wake from D3Cold */ | |
5108 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
5109 | /* phy power management enable */ | |
5110 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
5111 | ctrl |= E1000_CTRL_ADVD3WUC | | |
5112 | E1000_CTRL_EN_PHY_PWR_MGMT; | |
5113 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
5114 | } | |
5115 | ||
96838a40 | 5116 | if (adapter->hw.media_type == e1000_media_type_fiber || |
1da177e4 LT |
5117 | adapter->hw.media_type == e1000_media_type_internal_serdes) { |
5118 | /* keep the laser running in D3 */ | |
5119 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); | |
5120 | ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; | |
5121 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, ctrl_ext); | |
5122 | } | |
5123 | ||
2d7edb92 MC |
5124 | /* Allow time for pending master requests to run */ |
5125 | e1000_disable_pciex_master(&adapter->hw); | |
5126 | ||
1da177e4 LT |
5127 | E1000_WRITE_REG(&adapter->hw, WUC, E1000_WUC_PME_EN); |
5128 | E1000_WRITE_REG(&adapter->hw, WUFC, wufc); | |
d0e027db AK |
5129 | pci_enable_wake(pdev, PCI_D3hot, 1); |
5130 | pci_enable_wake(pdev, PCI_D3cold, 1); | |
1da177e4 LT |
5131 | } else { |
5132 | E1000_WRITE_REG(&adapter->hw, WUC, 0); | |
5133 | E1000_WRITE_REG(&adapter->hw, WUFC, 0); | |
d0e027db AK |
5134 | pci_enable_wake(pdev, PCI_D3hot, 0); |
5135 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
1da177e4 LT |
5136 | } |
5137 | ||
0fccd0e9 JG |
5138 | e1000_release_manageability(adapter); |
5139 | ||
5140 | /* make sure adapter isn't asleep if manageability is enabled */ | |
5141 | if (adapter->en_mng_pt) { | |
5142 | pci_enable_wake(pdev, PCI_D3hot, 1); | |
5143 | pci_enable_wake(pdev, PCI_D3cold, 1); | |
1da177e4 LT |
5144 | } |
5145 | ||
cd94dd0b AK |
5146 | if (adapter->hw.phy_type == e1000_phy_igp_3) |
5147 | e1000_phy_powerdown_workaround(&adapter->hw); | |
5148 | ||
edd106fc AK |
5149 | if (netif_running(netdev)) |
5150 | e1000_free_irq(adapter); | |
5151 | ||
b55ccb35 JK |
5152 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
5153 | * would have already happened in close and is redundant. */ | |
5154 | e1000_release_hw_control(adapter); | |
2d7edb92 | 5155 | |
1da177e4 | 5156 | pci_disable_device(pdev); |
240b1710 | 5157 | |
d0e027db | 5158 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); |
1da177e4 LT |
5159 | |
5160 | return 0; | |
5161 | } | |
5162 | ||
2f82665f | 5163 | #ifdef CONFIG_PM |
1da177e4 LT |
5164 | static int |
5165 | e1000_resume(struct pci_dev *pdev) | |
5166 | { | |
5167 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 5168 | struct e1000_adapter *adapter = netdev_priv(netdev); |
0fccd0e9 | 5169 | uint32_t err; |
1da177e4 | 5170 | |
d0e027db | 5171 | pci_set_power_state(pdev, PCI_D0); |
1d33e9c6 | 5172 | pci_restore_state(pdev); |
3d1dd8cb AK |
5173 | if ((err = pci_enable_device(pdev))) { |
5174 | printk(KERN_ERR "e1000: Cannot enable PCI device from suspend\n"); | |
5175 | return err; | |
5176 | } | |
a4cb847d | 5177 | pci_set_master(pdev); |
1da177e4 | 5178 | |
d0e027db AK |
5179 | pci_enable_wake(pdev, PCI_D3hot, 0); |
5180 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
1da177e4 | 5181 | |
edd106fc AK |
5182 | if (netif_running(netdev) && (err = e1000_request_irq(adapter))) |
5183 | return err; | |
5184 | ||
5185 | e1000_power_up_phy(adapter); | |
1da177e4 LT |
5186 | e1000_reset(adapter); |
5187 | E1000_WRITE_REG(&adapter->hw, WUS, ~0); | |
5188 | ||
0fccd0e9 JG |
5189 | e1000_init_manageability(adapter); |
5190 | ||
96838a40 | 5191 | if (netif_running(netdev)) |
1da177e4 LT |
5192 | e1000_up(adapter); |
5193 | ||
5194 | netif_device_attach(netdev); | |
5195 | ||
b55ccb35 JK |
5196 | /* If the controller is 82573 and f/w is AMT, do not set |
5197 | * DRV_LOAD until the interface is up. For all other cases, | |
5198 | * let the f/w know that the h/w is now under the control | |
5199 | * of the driver. */ | |
5200 | if (adapter->hw.mac_type != e1000_82573 || | |
5201 | !e1000_check_mng_mode(&adapter->hw)) | |
5202 | e1000_get_hw_control(adapter); | |
2d7edb92 | 5203 | |
1da177e4 LT |
5204 | return 0; |
5205 | } | |
5206 | #endif | |
c653e635 AK |
5207 | |
5208 | static void e1000_shutdown(struct pci_dev *pdev) | |
5209 | { | |
5210 | e1000_suspend(pdev, PMSG_SUSPEND); | |
5211 | } | |
5212 | ||
1da177e4 LT |
5213 | #ifdef CONFIG_NET_POLL_CONTROLLER |
5214 | /* | |
5215 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
5216 | * without having to re-enable interrupts. It's not called while | |
5217 | * the interrupt routine is executing. | |
5218 | */ | |
5219 | static void | |
2648345f | 5220 | e1000_netpoll(struct net_device *netdev) |
1da177e4 | 5221 | { |
60490fe0 | 5222 | struct e1000_adapter *adapter = netdev_priv(netdev); |
d3d9e484 | 5223 | |
1da177e4 | 5224 | disable_irq(adapter->pdev->irq); |
7d12e780 | 5225 | e1000_intr(adapter->pdev->irq, netdev); |
c4cfe567 | 5226 | e1000_clean_tx_irq(adapter, adapter->tx_ring); |
e8da8be1 JK |
5227 | #ifndef CONFIG_E1000_NAPI |
5228 | adapter->clean_rx(adapter, adapter->rx_ring); | |
5229 | #endif | |
1da177e4 LT |
5230 | enable_irq(adapter->pdev->irq); |
5231 | } | |
5232 | #endif | |
5233 | ||
9026729b AK |
5234 | /** |
5235 | * e1000_io_error_detected - called when PCI error is detected | |
5236 | * @pdev: Pointer to PCI device | |
5237 | * @state: The current pci conneection state | |
5238 | * | |
5239 | * This function is called after a PCI bus error affecting | |
5240 | * this device has been detected. | |
5241 | */ | |
5242 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state) | |
5243 | { | |
5244 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5245 | struct e1000_adapter *adapter = netdev->priv; | |
5246 | ||
5247 | netif_device_detach(netdev); | |
5248 | ||
5249 | if (netif_running(netdev)) | |
5250 | e1000_down(adapter); | |
72e8d6bb | 5251 | pci_disable_device(pdev); |
9026729b AK |
5252 | |
5253 | /* Request a slot slot reset. */ | |
5254 | return PCI_ERS_RESULT_NEED_RESET; | |
5255 | } | |
5256 | ||
5257 | /** | |
5258 | * e1000_io_slot_reset - called after the pci bus has been reset. | |
5259 | * @pdev: Pointer to PCI device | |
5260 | * | |
5261 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
5262 | * resembles the first-half of the e1000_resume routine. | |
5263 | */ | |
5264 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) | |
5265 | { | |
5266 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5267 | struct e1000_adapter *adapter = netdev->priv; | |
5268 | ||
5269 | if (pci_enable_device(pdev)) { | |
5270 | printk(KERN_ERR "e1000: Cannot re-enable PCI device after reset.\n"); | |
5271 | return PCI_ERS_RESULT_DISCONNECT; | |
5272 | } | |
5273 | pci_set_master(pdev); | |
5274 | ||
dbf38c94 LV |
5275 | pci_enable_wake(pdev, PCI_D3hot, 0); |
5276 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
9026729b | 5277 | |
9026729b AK |
5278 | e1000_reset(adapter); |
5279 | E1000_WRITE_REG(&adapter->hw, WUS, ~0); | |
5280 | ||
5281 | return PCI_ERS_RESULT_RECOVERED; | |
5282 | } | |
5283 | ||
5284 | /** | |
5285 | * e1000_io_resume - called when traffic can start flowing again. | |
5286 | * @pdev: Pointer to PCI device | |
5287 | * | |
5288 | * This callback is called when the error recovery driver tells us that | |
5289 | * its OK to resume normal operation. Implementation resembles the | |
5290 | * second-half of the e1000_resume routine. | |
5291 | */ | |
5292 | static void e1000_io_resume(struct pci_dev *pdev) | |
5293 | { | |
5294 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5295 | struct e1000_adapter *adapter = netdev->priv; | |
0fccd0e9 JG |
5296 | |
5297 | e1000_init_manageability(adapter); | |
9026729b AK |
5298 | |
5299 | if (netif_running(netdev)) { | |
5300 | if (e1000_up(adapter)) { | |
5301 | printk("e1000: can't bring device back up after reset\n"); | |
5302 | return; | |
5303 | } | |
5304 | } | |
5305 | ||
5306 | netif_device_attach(netdev); | |
5307 | ||
0fccd0e9 JG |
5308 | /* If the controller is 82573 and f/w is AMT, do not set |
5309 | * DRV_LOAD until the interface is up. For all other cases, | |
5310 | * let the f/w know that the h/w is now under the control | |
5311 | * of the driver. */ | |
5312 | if (adapter->hw.mac_type != e1000_82573 || | |
5313 | !e1000_check_mng_mode(&adapter->hw)) | |
5314 | e1000_get_hw_control(adapter); | |
9026729b | 5315 | |
9026729b AK |
5316 | } |
5317 | ||
1da177e4 | 5318 | /* e1000_main.c */ |