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 <linux.nics@intel.com> | |
3d41e30a | 24 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
1da177e4 LT |
25 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
26 | ||
27 | *******************************************************************************/ | |
28 | ||
29 | #include "e1000.h" | |
d0bb53e1 | 30 | #include <net/ip6_checksum.h> |
1da177e4 | 31 | |
1da177e4 | 32 | char e1000_driver_name[] = "e1000"; |
3ad2cc67 | 33 | static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver"; |
1da177e4 LT |
34 | #ifndef CONFIG_E1000_NAPI |
35 | #define DRIVERNAPI | |
36 | #else | |
37 | #define DRIVERNAPI "-NAPI" | |
38 | #endif | |
7e721579 | 39 | #define DRV_VERSION "7.3.20-k2"DRIVERNAPI |
abec42a4 SH |
40 | const char e1000_driver_version[] = DRV_VERSION; |
41 | static const char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation."; | |
1da177e4 LT |
42 | |
43 | /* e1000_pci_tbl - PCI Device ID Table | |
44 | * | |
45 | * Last entry must be all 0s | |
46 | * | |
47 | * Macro expands to... | |
48 | * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)} | |
49 | */ | |
60e23317 LT |
50 | #ifdef CONFIG_E1000E_ENABLED |
51 | #define PCIE(x) | |
52 | #else | |
53 | #define PCIE(x) x, | |
54 | #endif | |
55 | ||
1da177e4 LT |
56 | static struct pci_device_id e1000_pci_tbl[] = { |
57 | INTEL_E1000_ETHERNET_DEVICE(0x1000), | |
58 | INTEL_E1000_ETHERNET_DEVICE(0x1001), | |
59 | INTEL_E1000_ETHERNET_DEVICE(0x1004), | |
60 | INTEL_E1000_ETHERNET_DEVICE(0x1008), | |
61 | INTEL_E1000_ETHERNET_DEVICE(0x1009), | |
62 | INTEL_E1000_ETHERNET_DEVICE(0x100C), | |
63 | INTEL_E1000_ETHERNET_DEVICE(0x100D), | |
64 | INTEL_E1000_ETHERNET_DEVICE(0x100E), | |
65 | INTEL_E1000_ETHERNET_DEVICE(0x100F), | |
66 | INTEL_E1000_ETHERNET_DEVICE(0x1010), | |
67 | INTEL_E1000_ETHERNET_DEVICE(0x1011), | |
68 | INTEL_E1000_ETHERNET_DEVICE(0x1012), | |
69 | INTEL_E1000_ETHERNET_DEVICE(0x1013), | |
70 | INTEL_E1000_ETHERNET_DEVICE(0x1014), | |
71 | INTEL_E1000_ETHERNET_DEVICE(0x1015), | |
72 | INTEL_E1000_ETHERNET_DEVICE(0x1016), | |
73 | INTEL_E1000_ETHERNET_DEVICE(0x1017), | |
74 | INTEL_E1000_ETHERNET_DEVICE(0x1018), | |
75 | INTEL_E1000_ETHERNET_DEVICE(0x1019), | |
2648345f | 76 | INTEL_E1000_ETHERNET_DEVICE(0x101A), |
1da177e4 LT |
77 | INTEL_E1000_ETHERNET_DEVICE(0x101D), |
78 | INTEL_E1000_ETHERNET_DEVICE(0x101E), | |
79 | INTEL_E1000_ETHERNET_DEVICE(0x1026), | |
80 | INTEL_E1000_ETHERNET_DEVICE(0x1027), | |
81 | INTEL_E1000_ETHERNET_DEVICE(0x1028), | |
60e23317 LT |
82 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x1049)) |
83 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x104A)) | |
84 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x104B)) | |
85 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x104C)) | |
86 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x104D)) | |
87 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x105E)) | |
88 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x105F)) | |
89 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x1060)) | |
1da177e4 LT |
90 | INTEL_E1000_ETHERNET_DEVICE(0x1075), |
91 | INTEL_E1000_ETHERNET_DEVICE(0x1076), | |
92 | INTEL_E1000_ETHERNET_DEVICE(0x1077), | |
93 | INTEL_E1000_ETHERNET_DEVICE(0x1078), | |
94 | INTEL_E1000_ETHERNET_DEVICE(0x1079), | |
95 | INTEL_E1000_ETHERNET_DEVICE(0x107A), | |
96 | INTEL_E1000_ETHERNET_DEVICE(0x107B), | |
97 | INTEL_E1000_ETHERNET_DEVICE(0x107C), | |
60e23317 LT |
98 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x107D)) |
99 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x107E)) | |
100 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x107F)) | |
1da177e4 | 101 | INTEL_E1000_ETHERNET_DEVICE(0x108A), |
60e23317 LT |
102 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x108B)) |
103 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x108C)) | |
104 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x1096)) | |
105 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x1098)) | |
b7ee49db | 106 | INTEL_E1000_ETHERNET_DEVICE(0x1099), |
60e23317 LT |
107 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x109A)) |
108 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x10A4)) | |
109 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x10A5)) | |
b7ee49db | 110 | INTEL_E1000_ETHERNET_DEVICE(0x10B5), |
60e23317 LT |
111 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x10B9)) |
112 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x10BA)) | |
113 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x10BB)) | |
114 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x10BC)) | |
115 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x10C4)) | |
116 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x10C5)) | |
117 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x10D5)) | |
118 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x10D9)) | |
119 | PCIE( INTEL_E1000_ETHERNET_DEVICE(0x10DA)) | |
1da177e4 LT |
120 | /* required last entry */ |
121 | {0,} | |
122 | }; | |
123 | ||
124 | MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); | |
125 | ||
35574764 NN |
126 | int e1000_up(struct e1000_adapter *adapter); |
127 | void e1000_down(struct e1000_adapter *adapter); | |
128 | void e1000_reinit_locked(struct e1000_adapter *adapter); | |
129 | void e1000_reset(struct e1000_adapter *adapter); | |
130 | int e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx); | |
131 | int e1000_setup_all_tx_resources(struct e1000_adapter *adapter); | |
132 | int e1000_setup_all_rx_resources(struct e1000_adapter *adapter); | |
133 | void e1000_free_all_tx_resources(struct e1000_adapter *adapter); | |
134 | void e1000_free_all_rx_resources(struct e1000_adapter *adapter); | |
3ad2cc67 | 135 | static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
35574764 | 136 | struct e1000_tx_ring *txdr); |
3ad2cc67 | 137 | static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
35574764 | 138 | struct e1000_rx_ring *rxdr); |
3ad2cc67 | 139 | static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
35574764 | 140 | struct e1000_tx_ring *tx_ring); |
3ad2cc67 | 141 | static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
35574764 NN |
142 | struct e1000_rx_ring *rx_ring); |
143 | void e1000_update_stats(struct e1000_adapter *adapter); | |
1da177e4 LT |
144 | |
145 | static int e1000_init_module(void); | |
146 | static void e1000_exit_module(void); | |
147 | static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent); | |
148 | static void __devexit e1000_remove(struct pci_dev *pdev); | |
581d708e | 149 | static int e1000_alloc_queues(struct e1000_adapter *adapter); |
1da177e4 LT |
150 | static int e1000_sw_init(struct e1000_adapter *adapter); |
151 | static int e1000_open(struct net_device *netdev); | |
152 | static int e1000_close(struct net_device *netdev); | |
153 | static void e1000_configure_tx(struct e1000_adapter *adapter); | |
154 | static void e1000_configure_rx(struct e1000_adapter *adapter); | |
155 | static void e1000_setup_rctl(struct e1000_adapter *adapter); | |
581d708e MC |
156 | static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter); |
157 | static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter); | |
158 | static void e1000_clean_tx_ring(struct e1000_adapter *adapter, | |
159 | struct e1000_tx_ring *tx_ring); | |
160 | static void e1000_clean_rx_ring(struct e1000_adapter *adapter, | |
161 | struct e1000_rx_ring *rx_ring); | |
db0ce50d | 162 | static void e1000_set_rx_mode(struct net_device *netdev); |
1da177e4 LT |
163 | static void e1000_update_phy_info(unsigned long data); |
164 | static void e1000_watchdog(unsigned long data); | |
1da177e4 LT |
165 | static void e1000_82547_tx_fifo_stall(unsigned long data); |
166 | static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev); | |
167 | static struct net_device_stats * e1000_get_stats(struct net_device *netdev); | |
168 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu); | |
169 | static int e1000_set_mac(struct net_device *netdev, void *p); | |
7d12e780 | 170 | static irqreturn_t e1000_intr(int irq, void *data); |
9ac98284 | 171 | static irqreturn_t e1000_intr_msi(int irq, void *data); |
c3033b01 JP |
172 | static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
173 | struct e1000_tx_ring *tx_ring); | |
1da177e4 | 174 | #ifdef CONFIG_E1000_NAPI |
bea3348e | 175 | static int e1000_clean(struct napi_struct *napi, int budget); |
c3033b01 JP |
176 | static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
177 | struct e1000_rx_ring *rx_ring, | |
178 | int *work_done, int work_to_do); | |
179 | static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, | |
180 | struct e1000_rx_ring *rx_ring, | |
181 | int *work_done, int work_to_do); | |
1da177e4 | 182 | #else |
c3033b01 JP |
183 | static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
184 | struct e1000_rx_ring *rx_ring); | |
185 | static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, | |
186 | struct e1000_rx_ring *rx_ring); | |
1da177e4 | 187 | #endif |
581d708e | 188 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
72d64a43 JK |
189 | struct e1000_rx_ring *rx_ring, |
190 | int cleaned_count); | |
581d708e | 191 | static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, |
72d64a43 JK |
192 | struct e1000_rx_ring *rx_ring, |
193 | int cleaned_count); | |
1da177e4 LT |
194 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); |
195 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
196 | int cmd); | |
1da177e4 LT |
197 | static void e1000_enter_82542_rst(struct e1000_adapter *adapter); |
198 | static void e1000_leave_82542_rst(struct e1000_adapter *adapter); | |
199 | static void e1000_tx_timeout(struct net_device *dev); | |
65f27f38 | 200 | static void e1000_reset_task(struct work_struct *work); |
1da177e4 | 201 | static void e1000_smartspeed(struct e1000_adapter *adapter); |
e619d523 AK |
202 | static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
203 | struct sk_buff *skb); | |
1da177e4 LT |
204 | |
205 | static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp); | |
206 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid); | |
207 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid); | |
208 | static void e1000_restore_vlan(struct e1000_adapter *adapter); | |
209 | ||
977e74b5 | 210 | static int e1000_suspend(struct pci_dev *pdev, pm_message_t state); |
6fdfef16 | 211 | #ifdef CONFIG_PM |
1da177e4 LT |
212 | static int e1000_resume(struct pci_dev *pdev); |
213 | #endif | |
c653e635 | 214 | static void e1000_shutdown(struct pci_dev *pdev); |
1da177e4 LT |
215 | |
216 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
217 | /* for netdump / net console */ | |
218 | static void e1000_netpoll (struct net_device *netdev); | |
219 | #endif | |
220 | ||
1f753861 JB |
221 | #define COPYBREAK_DEFAULT 256 |
222 | static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT; | |
223 | module_param(copybreak, uint, 0644); | |
224 | MODULE_PARM_DESC(copybreak, | |
225 | "Maximum size of packet that is copied to a new buffer on receive"); | |
226 | ||
9026729b AK |
227 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
228 | pci_channel_state_t state); | |
229 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev); | |
230 | static void e1000_io_resume(struct pci_dev *pdev); | |
231 | ||
232 | static struct pci_error_handlers e1000_err_handler = { | |
233 | .error_detected = e1000_io_error_detected, | |
234 | .slot_reset = e1000_io_slot_reset, | |
235 | .resume = e1000_io_resume, | |
236 | }; | |
24025e4e | 237 | |
1da177e4 LT |
238 | static struct pci_driver e1000_driver = { |
239 | .name = e1000_driver_name, | |
240 | .id_table = e1000_pci_tbl, | |
241 | .probe = e1000_probe, | |
242 | .remove = __devexit_p(e1000_remove), | |
c4e24f01 | 243 | #ifdef CONFIG_PM |
1da177e4 | 244 | /* Power Managment Hooks */ |
1da177e4 | 245 | .suspend = e1000_suspend, |
c653e635 | 246 | .resume = e1000_resume, |
1da177e4 | 247 | #endif |
9026729b AK |
248 | .shutdown = e1000_shutdown, |
249 | .err_handler = &e1000_err_handler | |
1da177e4 LT |
250 | }; |
251 | ||
252 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
253 | MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); | |
254 | MODULE_LICENSE("GPL"); | |
255 | MODULE_VERSION(DRV_VERSION); | |
256 | ||
257 | static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; | |
258 | module_param(debug, int, 0); | |
259 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
260 | ||
261 | /** | |
262 | * e1000_init_module - Driver Registration Routine | |
263 | * | |
264 | * e1000_init_module is the first routine called when the driver is | |
265 | * loaded. All it does is register with the PCI subsystem. | |
266 | **/ | |
267 | ||
268 | static int __init | |
269 | e1000_init_module(void) | |
270 | { | |
271 | int ret; | |
272 | printk(KERN_INFO "%s - version %s\n", | |
273 | e1000_driver_string, e1000_driver_version); | |
274 | ||
275 | printk(KERN_INFO "%s\n", e1000_copyright); | |
276 | ||
29917620 | 277 | ret = pci_register_driver(&e1000_driver); |
1f753861 JB |
278 | if (copybreak != COPYBREAK_DEFAULT) { |
279 | if (copybreak == 0) | |
280 | printk(KERN_INFO "e1000: copybreak disabled\n"); | |
281 | else | |
282 | printk(KERN_INFO "e1000: copybreak enabled for " | |
283 | "packets <= %u bytes\n", copybreak); | |
284 | } | |
1da177e4 LT |
285 | return ret; |
286 | } | |
287 | ||
288 | module_init(e1000_init_module); | |
289 | ||
290 | /** | |
291 | * e1000_exit_module - Driver Exit Cleanup Routine | |
292 | * | |
293 | * e1000_exit_module is called just before the driver is removed | |
294 | * from memory. | |
295 | **/ | |
296 | ||
297 | static void __exit | |
298 | e1000_exit_module(void) | |
299 | { | |
1da177e4 LT |
300 | pci_unregister_driver(&e1000_driver); |
301 | } | |
302 | ||
303 | module_exit(e1000_exit_module); | |
304 | ||
2db10a08 AK |
305 | static int e1000_request_irq(struct e1000_adapter *adapter) |
306 | { | |
307 | struct net_device *netdev = adapter->netdev; | |
3e18826c | 308 | irq_handler_t handler = e1000_intr; |
e94bd23f AK |
309 | int irq_flags = IRQF_SHARED; |
310 | int err; | |
2db10a08 | 311 | |
9ac98284 | 312 | if (adapter->hw.mac_type >= e1000_82571) { |
e94bd23f AK |
313 | adapter->have_msi = !pci_enable_msi(adapter->pdev); |
314 | if (adapter->have_msi) { | |
3e18826c | 315 | handler = e1000_intr_msi; |
e94bd23f | 316 | irq_flags = 0; |
2db10a08 AK |
317 | } |
318 | } | |
e94bd23f AK |
319 | |
320 | err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name, | |
321 | netdev); | |
322 | if (err) { | |
323 | if (adapter->have_msi) | |
324 | pci_disable_msi(adapter->pdev); | |
2db10a08 AK |
325 | DPRINTK(PROBE, ERR, |
326 | "Unable to allocate interrupt Error: %d\n", err); | |
e94bd23f | 327 | } |
2db10a08 AK |
328 | |
329 | return err; | |
330 | } | |
331 | ||
332 | static void e1000_free_irq(struct e1000_adapter *adapter) | |
333 | { | |
334 | struct net_device *netdev = adapter->netdev; | |
335 | ||
336 | free_irq(adapter->pdev->irq, netdev); | |
337 | ||
2db10a08 AK |
338 | if (adapter->have_msi) |
339 | pci_disable_msi(adapter->pdev); | |
2db10a08 AK |
340 | } |
341 | ||
1da177e4 LT |
342 | /** |
343 | * e1000_irq_disable - Mask off interrupt generation on the NIC | |
344 | * @adapter: board private structure | |
345 | **/ | |
346 | ||
e619d523 | 347 | static void |
1da177e4 LT |
348 | e1000_irq_disable(struct e1000_adapter *adapter) |
349 | { | |
350 | atomic_inc(&adapter->irq_sem); | |
351 | E1000_WRITE_REG(&adapter->hw, IMC, ~0); | |
352 | E1000_WRITE_FLUSH(&adapter->hw); | |
353 | synchronize_irq(adapter->pdev->irq); | |
354 | } | |
355 | ||
356 | /** | |
357 | * e1000_irq_enable - Enable default interrupt generation settings | |
358 | * @adapter: board private structure | |
359 | **/ | |
360 | ||
e619d523 | 361 | static void |
1da177e4 LT |
362 | e1000_irq_enable(struct e1000_adapter *adapter) |
363 | { | |
96838a40 | 364 | if (likely(atomic_dec_and_test(&adapter->irq_sem))) { |
1da177e4 LT |
365 | E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK); |
366 | E1000_WRITE_FLUSH(&adapter->hw); | |
367 | } | |
368 | } | |
3ad2cc67 AB |
369 | |
370 | static void | |
2d7edb92 MC |
371 | e1000_update_mng_vlan(struct e1000_adapter *adapter) |
372 | { | |
373 | struct net_device *netdev = adapter->netdev; | |
374 | uint16_t vid = adapter->hw.mng_cookie.vlan_id; | |
375 | uint16_t old_vid = adapter->mng_vlan_id; | |
96838a40 | 376 | if (adapter->vlgrp) { |
5c15bdec | 377 | if (!vlan_group_get_device(adapter->vlgrp, vid)) { |
96838a40 | 378 | if (adapter->hw.mng_cookie.status & |
2d7edb92 MC |
379 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) { |
380 | e1000_vlan_rx_add_vid(netdev, vid); | |
381 | adapter->mng_vlan_id = vid; | |
382 | } else | |
383 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
96838a40 JB |
384 | |
385 | if ((old_vid != (uint16_t)E1000_MNG_VLAN_NONE) && | |
386 | (vid != old_vid) && | |
5c15bdec | 387 | !vlan_group_get_device(adapter->vlgrp, old_vid)) |
2d7edb92 | 388 | e1000_vlan_rx_kill_vid(netdev, old_vid); |
c5f226fe JK |
389 | } else |
390 | adapter->mng_vlan_id = vid; | |
2d7edb92 MC |
391 | } |
392 | } | |
b55ccb35 JK |
393 | |
394 | /** | |
395 | * e1000_release_hw_control - release control of the h/w to f/w | |
396 | * @adapter: address of board private structure | |
397 | * | |
398 | * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit. | |
399 | * For ASF and Pass Through versions of f/w this means that the | |
400 | * driver is no longer loaded. For AMT version (only with 82573) i | |
90fb5135 | 401 | * of the f/w this means that the network i/f is closed. |
76c224bc | 402 | * |
b55ccb35 JK |
403 | **/ |
404 | ||
e619d523 | 405 | static void |
b55ccb35 JK |
406 | e1000_release_hw_control(struct e1000_adapter *adapter) |
407 | { | |
408 | uint32_t ctrl_ext; | |
409 | uint32_t swsm; | |
410 | ||
411 | /* Let firmware taken over control of h/w */ | |
412 | switch (adapter->hw.mac_type) { | |
b55ccb35 JK |
413 | case e1000_82573: |
414 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
415 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
416 | swsm & ~E1000_SWSM_DRV_LOAD); | |
31d76442 BA |
417 | break; |
418 | case e1000_82571: | |
419 | case e1000_82572: | |
420 | case e1000_80003es2lan: | |
cd94dd0b | 421 | case e1000_ich8lan: |
31d76442 | 422 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); |
cd94dd0b | 423 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, |
31d76442 | 424 | ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); |
cd94dd0b | 425 | break; |
b55ccb35 JK |
426 | default: |
427 | break; | |
428 | } | |
429 | } | |
430 | ||
431 | /** | |
432 | * e1000_get_hw_control - get control of the h/w from f/w | |
433 | * @adapter: address of board private structure | |
434 | * | |
435 | * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit. | |
76c224bc AK |
436 | * For ASF and Pass Through versions of f/w this means that |
437 | * the driver is loaded. For AMT version (only with 82573) | |
90fb5135 | 438 | * of the f/w this means that the network i/f is open. |
76c224bc | 439 | * |
b55ccb35 JK |
440 | **/ |
441 | ||
e619d523 | 442 | static void |
b55ccb35 JK |
443 | e1000_get_hw_control(struct e1000_adapter *adapter) |
444 | { | |
445 | uint32_t ctrl_ext; | |
446 | uint32_t swsm; | |
90fb5135 | 447 | |
b55ccb35 JK |
448 | /* Let firmware know the driver has taken over */ |
449 | switch (adapter->hw.mac_type) { | |
b55ccb35 JK |
450 | case e1000_82573: |
451 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
452 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
453 | swsm | E1000_SWSM_DRV_LOAD); | |
454 | break; | |
31d76442 BA |
455 | case e1000_82571: |
456 | case e1000_82572: | |
457 | case e1000_80003es2lan: | |
cd94dd0b | 458 | case e1000_ich8lan: |
31d76442 BA |
459 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); |
460 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, | |
461 | ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); | |
cd94dd0b | 462 | break; |
b55ccb35 JK |
463 | default: |
464 | break; | |
465 | } | |
466 | } | |
467 | ||
0fccd0e9 JG |
468 | static void |
469 | e1000_init_manageability(struct e1000_adapter *adapter) | |
470 | { | |
471 | if (adapter->en_mng_pt) { | |
472 | uint32_t manc = E1000_READ_REG(&adapter->hw, MANC); | |
473 | ||
474 | /* disable hardware interception of ARP */ | |
475 | manc &= ~(E1000_MANC_ARP_EN); | |
476 | ||
477 | /* enable receiving management packets to the host */ | |
478 | /* this will probably generate destination unreachable messages | |
479 | * from the host OS, but the packets will be handled on SMBUS */ | |
480 | if (adapter->hw.has_manc2h) { | |
481 | uint32_t manc2h = E1000_READ_REG(&adapter->hw, MANC2H); | |
482 | ||
483 | manc |= E1000_MANC_EN_MNG2HOST; | |
484 | #define E1000_MNG2HOST_PORT_623 (1 << 5) | |
485 | #define E1000_MNG2HOST_PORT_664 (1 << 6) | |
486 | manc2h |= E1000_MNG2HOST_PORT_623; | |
487 | manc2h |= E1000_MNG2HOST_PORT_664; | |
488 | E1000_WRITE_REG(&adapter->hw, MANC2H, manc2h); | |
489 | } | |
490 | ||
491 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
492 | } | |
493 | } | |
494 | ||
495 | static void | |
496 | e1000_release_manageability(struct e1000_adapter *adapter) | |
497 | { | |
498 | if (adapter->en_mng_pt) { | |
499 | uint32_t manc = E1000_READ_REG(&adapter->hw, MANC); | |
500 | ||
501 | /* re-enable hardware interception of ARP */ | |
502 | manc |= E1000_MANC_ARP_EN; | |
503 | ||
504 | if (adapter->hw.has_manc2h) | |
505 | manc &= ~E1000_MANC_EN_MNG2HOST; | |
506 | ||
507 | /* don't explicitly have to mess with MANC2H since | |
508 | * MANC has an enable disable that gates MANC2H */ | |
509 | ||
510 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
511 | } | |
512 | } | |
513 | ||
e0aac5a2 AK |
514 | /** |
515 | * e1000_configure - configure the hardware for RX and TX | |
516 | * @adapter = private board structure | |
517 | **/ | |
518 | static void e1000_configure(struct e1000_adapter *adapter) | |
1da177e4 LT |
519 | { |
520 | struct net_device *netdev = adapter->netdev; | |
2db10a08 | 521 | int i; |
1da177e4 | 522 | |
db0ce50d | 523 | e1000_set_rx_mode(netdev); |
1da177e4 LT |
524 | |
525 | e1000_restore_vlan(adapter); | |
0fccd0e9 | 526 | e1000_init_manageability(adapter); |
1da177e4 LT |
527 | |
528 | e1000_configure_tx(adapter); | |
529 | e1000_setup_rctl(adapter); | |
530 | e1000_configure_rx(adapter); | |
72d64a43 JK |
531 | /* call E1000_DESC_UNUSED which always leaves |
532 | * at least 1 descriptor unused to make sure | |
533 | * next_to_use != next_to_clean */ | |
f56799ea | 534 | for (i = 0; i < adapter->num_rx_queues; i++) { |
72d64a43 | 535 | struct e1000_rx_ring *ring = &adapter->rx_ring[i]; |
a292ca6e JK |
536 | adapter->alloc_rx_buf(adapter, ring, |
537 | E1000_DESC_UNUSED(ring)); | |
f56799ea | 538 | } |
1da177e4 | 539 | |
7bfa4816 | 540 | adapter->tx_queue_len = netdev->tx_queue_len; |
e0aac5a2 AK |
541 | } |
542 | ||
543 | int e1000_up(struct e1000_adapter *adapter) | |
544 | { | |
545 | /* hardware has been reset, we need to reload some things */ | |
546 | e1000_configure(adapter); | |
547 | ||
548 | clear_bit(__E1000_DOWN, &adapter->flags); | |
7bfa4816 | 549 | |
1da177e4 | 550 | #ifdef CONFIG_E1000_NAPI |
bea3348e | 551 | napi_enable(&adapter->napi); |
1da177e4 | 552 | #endif |
5de55624 MC |
553 | e1000_irq_enable(adapter); |
554 | ||
79f3d399 JB |
555 | /* fire a link change interrupt to start the watchdog */ |
556 | E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_LSC); | |
1da177e4 LT |
557 | return 0; |
558 | } | |
559 | ||
79f05bf0 AK |
560 | /** |
561 | * e1000_power_up_phy - restore link in case the phy was powered down | |
562 | * @adapter: address of board private structure | |
563 | * | |
564 | * The phy may be powered down to save power and turn off link when the | |
565 | * driver is unloaded and wake on lan is not enabled (among others) | |
566 | * *** this routine MUST be followed by a call to e1000_reset *** | |
567 | * | |
568 | **/ | |
569 | ||
d658266e | 570 | void e1000_power_up_phy(struct e1000_adapter *adapter) |
79f05bf0 AK |
571 | { |
572 | uint16_t mii_reg = 0; | |
573 | ||
574 | /* Just clear the power down bit to wake the phy back up */ | |
575 | if (adapter->hw.media_type == e1000_media_type_copper) { | |
576 | /* according to the manual, the phy will retain its | |
577 | * settings across a power-down/up cycle */ | |
578 | e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); | |
579 | mii_reg &= ~MII_CR_POWER_DOWN; | |
580 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg); | |
581 | } | |
582 | } | |
583 | ||
584 | static void e1000_power_down_phy(struct e1000_adapter *adapter) | |
585 | { | |
61c2505f | 586 | /* Power down the PHY so no link is implied when interface is down * |
c3033b01 | 587 | * The PHY cannot be powered down if any of the following is true * |
79f05bf0 AK |
588 | * (a) WoL is enabled |
589 | * (b) AMT is active | |
590 | * (c) SoL/IDER session is active */ | |
591 | if (!adapter->wol && adapter->hw.mac_type >= e1000_82540 && | |
61c2505f | 592 | adapter->hw.media_type == e1000_media_type_copper) { |
79f05bf0 | 593 | uint16_t mii_reg = 0; |
61c2505f BA |
594 | |
595 | switch (adapter->hw.mac_type) { | |
596 | case e1000_82540: | |
597 | case e1000_82545: | |
598 | case e1000_82545_rev_3: | |
599 | case e1000_82546: | |
600 | case e1000_82546_rev_3: | |
601 | case e1000_82541: | |
602 | case e1000_82541_rev_2: | |
603 | case e1000_82547: | |
604 | case e1000_82547_rev_2: | |
605 | if (E1000_READ_REG(&adapter->hw, MANC) & | |
606 | E1000_MANC_SMBUS_EN) | |
607 | goto out; | |
608 | break; | |
609 | case e1000_82571: | |
610 | case e1000_82572: | |
611 | case e1000_82573: | |
612 | case e1000_80003es2lan: | |
613 | case e1000_ich8lan: | |
614 | if (e1000_check_mng_mode(&adapter->hw) || | |
615 | e1000_check_phy_reset_block(&adapter->hw)) | |
616 | goto out; | |
617 | break; | |
618 | default: | |
619 | goto out; | |
620 | } | |
79f05bf0 AK |
621 | e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); |
622 | mii_reg |= MII_CR_POWER_DOWN; | |
623 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg); | |
624 | mdelay(1); | |
625 | } | |
61c2505f BA |
626 | out: |
627 | return; | |
79f05bf0 AK |
628 | } |
629 | ||
1da177e4 LT |
630 | void |
631 | e1000_down(struct e1000_adapter *adapter) | |
632 | { | |
633 | struct net_device *netdev = adapter->netdev; | |
634 | ||
1314bbf3 AK |
635 | /* signal that we're down so the interrupt handler does not |
636 | * reschedule our watchdog timer */ | |
637 | set_bit(__E1000_DOWN, &adapter->flags); | |
638 | ||
e0aac5a2 | 639 | #ifdef CONFIG_E1000_NAPI |
bea3348e | 640 | napi_disable(&adapter->napi); |
49d85c50 | 641 | atomic_set(&adapter->irq_sem, 0); |
e0aac5a2 | 642 | #endif |
1da177e4 | 643 | e1000_irq_disable(adapter); |
c1605eb3 | 644 | |
1da177e4 LT |
645 | del_timer_sync(&adapter->tx_fifo_stall_timer); |
646 | del_timer_sync(&adapter->watchdog_timer); | |
647 | del_timer_sync(&adapter->phy_info_timer); | |
648 | ||
7bfa4816 | 649 | netdev->tx_queue_len = adapter->tx_queue_len; |
1da177e4 LT |
650 | adapter->link_speed = 0; |
651 | adapter->link_duplex = 0; | |
652 | netif_carrier_off(netdev); | |
653 | netif_stop_queue(netdev); | |
654 | ||
655 | e1000_reset(adapter); | |
581d708e MC |
656 | e1000_clean_all_tx_rings(adapter); |
657 | e1000_clean_all_rx_rings(adapter); | |
1da177e4 | 658 | } |
1da177e4 | 659 | |
2db10a08 AK |
660 | void |
661 | e1000_reinit_locked(struct e1000_adapter *adapter) | |
662 | { | |
663 | WARN_ON(in_interrupt()); | |
664 | while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) | |
665 | msleep(1); | |
666 | e1000_down(adapter); | |
667 | e1000_up(adapter); | |
668 | clear_bit(__E1000_RESETTING, &adapter->flags); | |
1da177e4 LT |
669 | } |
670 | ||
671 | void | |
672 | e1000_reset(struct e1000_adapter *adapter) | |
673 | { | |
018ea44e | 674 | uint32_t pba = 0, tx_space, min_tx_space, min_rx_space; |
1125ecbc | 675 | uint16_t fc_high_water_mark = E1000_FC_HIGH_DIFF; |
c3033b01 | 676 | bool legacy_pba_adjust = false; |
1da177e4 LT |
677 | |
678 | /* Repartition Pba for greater than 9k mtu | |
679 | * To take effect CTRL.RST is required. | |
680 | */ | |
681 | ||
2d7edb92 | 682 | switch (adapter->hw.mac_type) { |
018ea44e BA |
683 | case e1000_82542_rev2_0: |
684 | case e1000_82542_rev2_1: | |
685 | case e1000_82543: | |
686 | case e1000_82544: | |
687 | case e1000_82540: | |
688 | case e1000_82541: | |
689 | case e1000_82541_rev_2: | |
c3033b01 | 690 | legacy_pba_adjust = true; |
018ea44e BA |
691 | pba = E1000_PBA_48K; |
692 | break; | |
693 | case e1000_82545: | |
694 | case e1000_82545_rev_3: | |
695 | case e1000_82546: | |
696 | case e1000_82546_rev_3: | |
697 | pba = E1000_PBA_48K; | |
698 | break; | |
2d7edb92 | 699 | case e1000_82547: |
0e6ef3e0 | 700 | case e1000_82547_rev_2: |
c3033b01 | 701 | legacy_pba_adjust = true; |
2d7edb92 MC |
702 | pba = E1000_PBA_30K; |
703 | break; | |
868d5309 MC |
704 | case e1000_82571: |
705 | case e1000_82572: | |
6418ecc6 | 706 | case e1000_80003es2lan: |
868d5309 MC |
707 | pba = E1000_PBA_38K; |
708 | break; | |
2d7edb92 | 709 | case e1000_82573: |
018ea44e | 710 | pba = E1000_PBA_20K; |
2d7edb92 | 711 | break; |
cd94dd0b AK |
712 | case e1000_ich8lan: |
713 | pba = E1000_PBA_8K; | |
018ea44e BA |
714 | case e1000_undefined: |
715 | case e1000_num_macs: | |
2d7edb92 MC |
716 | break; |
717 | } | |
718 | ||
c3033b01 | 719 | if (legacy_pba_adjust) { |
018ea44e BA |
720 | if (adapter->netdev->mtu > E1000_RXBUFFER_8192) |
721 | pba -= 8; /* allocate more FIFO for Tx */ | |
2d7edb92 | 722 | |
018ea44e BA |
723 | if (adapter->hw.mac_type == e1000_82547) { |
724 | adapter->tx_fifo_head = 0; | |
725 | adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; | |
726 | adapter->tx_fifo_size = | |
727 | (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; | |
728 | atomic_set(&adapter->tx_fifo_stall, 0); | |
729 | } | |
730 | } else if (adapter->hw.max_frame_size > MAXIMUM_ETHERNET_FRAME_SIZE) { | |
731 | /* adjust PBA for jumbo frames */ | |
732 | E1000_WRITE_REG(&adapter->hw, PBA, pba); | |
733 | ||
734 | /* To maintain wire speed transmits, the Tx FIFO should be | |
735 | * large enough to accomodate two full transmit packets, | |
736 | * rounded up to the next 1KB and expressed in KB. Likewise, | |
737 | * the Rx FIFO should be large enough to accomodate at least | |
738 | * one full receive packet and is similarly rounded up and | |
739 | * expressed in KB. */ | |
740 | pba = E1000_READ_REG(&adapter->hw, PBA); | |
741 | /* upper 16 bits has Tx packet buffer allocation size in KB */ | |
742 | tx_space = pba >> 16; | |
743 | /* lower 16 bits has Rx packet buffer allocation size in KB */ | |
744 | pba &= 0xffff; | |
745 | /* don't include ethernet FCS because hardware appends/strips */ | |
746 | min_rx_space = adapter->netdev->mtu + ENET_HEADER_SIZE + | |
747 | VLAN_TAG_SIZE; | |
748 | min_tx_space = min_rx_space; | |
749 | min_tx_space *= 2; | |
9099cfb9 | 750 | min_tx_space = ALIGN(min_tx_space, 1024); |
018ea44e | 751 | min_tx_space >>= 10; |
9099cfb9 | 752 | min_rx_space = ALIGN(min_rx_space, 1024); |
018ea44e BA |
753 | min_rx_space >>= 10; |
754 | ||
755 | /* If current Tx allocation is less than the min Tx FIFO size, | |
756 | * and the min Tx FIFO size is less than the current Rx FIFO | |
757 | * allocation, take space away from current Rx allocation */ | |
758 | if (tx_space < min_tx_space && | |
759 | ((min_tx_space - tx_space) < pba)) { | |
760 | pba = pba - (min_tx_space - tx_space); | |
761 | ||
762 | /* PCI/PCIx hardware has PBA alignment constraints */ | |
763 | switch (adapter->hw.mac_type) { | |
764 | case e1000_82545 ... e1000_82546_rev_3: | |
765 | pba &= ~(E1000_PBA_8K - 1); | |
766 | break; | |
767 | default: | |
768 | break; | |
769 | } | |
770 | ||
771 | /* if short on rx space, rx wins and must trump tx | |
772 | * adjustment or use Early Receive if available */ | |
773 | if (pba < min_rx_space) { | |
774 | switch (adapter->hw.mac_type) { | |
775 | case e1000_82573: | |
776 | /* ERT enabled in e1000_configure_rx */ | |
777 | break; | |
778 | default: | |
779 | pba = min_rx_space; | |
780 | break; | |
781 | } | |
782 | } | |
783 | } | |
1da177e4 | 784 | } |
2d7edb92 | 785 | |
1da177e4 LT |
786 | E1000_WRITE_REG(&adapter->hw, PBA, pba); |
787 | ||
788 | /* flow control settings */ | |
f11b7f85 JK |
789 | /* Set the FC high water mark to 90% of the FIFO size. |
790 | * Required to clear last 3 LSB */ | |
791 | fc_high_water_mark = ((pba * 9216)/10) & 0xFFF8; | |
cd94dd0b AK |
792 | /* We can't use 90% on small FIFOs because the remainder |
793 | * would be less than 1 full frame. In this case, we size | |
794 | * it to allow at least a full frame above the high water | |
795 | * mark. */ | |
796 | if (pba < E1000_PBA_16K) | |
797 | fc_high_water_mark = (pba * 1024) - 1600; | |
f11b7f85 JK |
798 | |
799 | adapter->hw.fc_high_water = fc_high_water_mark; | |
800 | adapter->hw.fc_low_water = fc_high_water_mark - 8; | |
87041639 JK |
801 | if (adapter->hw.mac_type == e1000_80003es2lan) |
802 | adapter->hw.fc_pause_time = 0xFFFF; | |
803 | else | |
804 | adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME; | |
1da177e4 LT |
805 | adapter->hw.fc_send_xon = 1; |
806 | adapter->hw.fc = adapter->hw.original_fc; | |
807 | ||
2d7edb92 | 808 | /* Allow time for pending master requests to run */ |
1da177e4 | 809 | e1000_reset_hw(&adapter->hw); |
96838a40 | 810 | if (adapter->hw.mac_type >= e1000_82544) |
1da177e4 | 811 | E1000_WRITE_REG(&adapter->hw, WUC, 0); |
09ae3e88 | 812 | |
96838a40 | 813 | if (e1000_init_hw(&adapter->hw)) |
1da177e4 | 814 | DPRINTK(PROBE, ERR, "Hardware Error\n"); |
2d7edb92 | 815 | e1000_update_mng_vlan(adapter); |
3d5460a0 JB |
816 | |
817 | /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */ | |
818 | if (adapter->hw.mac_type >= e1000_82544 && | |
819 | adapter->hw.mac_type <= e1000_82547_rev_2 && | |
820 | adapter->hw.autoneg == 1 && | |
821 | adapter->hw.autoneg_advertised == ADVERTISE_1000_FULL) { | |
822 | uint32_t ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
823 | /* clear phy power management bit if we are in gig only mode, | |
824 | * which if enabled will attempt negotiation to 100Mb, which | |
825 | * can cause a loss of link at power off or driver unload */ | |
826 | ctrl &= ~E1000_CTRL_SWDPIN3; | |
827 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
828 | } | |
829 | ||
1da177e4 LT |
830 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
831 | E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE); | |
832 | ||
833 | e1000_reset_adaptive(&adapter->hw); | |
834 | e1000_phy_get_info(&adapter->hw, &adapter->phy_info); | |
9a53a202 AK |
835 | |
836 | if (!adapter->smart_power_down && | |
837 | (adapter->hw.mac_type == e1000_82571 || | |
838 | adapter->hw.mac_type == e1000_82572)) { | |
839 | uint16_t phy_data = 0; | |
840 | /* speed up time to link by disabling smart power down, ignore | |
841 | * the return value of this function because there is nothing | |
842 | * different we would do if it failed */ | |
843 | e1000_read_phy_reg(&adapter->hw, IGP02E1000_PHY_POWER_MGMT, | |
844 | &phy_data); | |
845 | phy_data &= ~IGP02E1000_PM_SPD; | |
846 | e1000_write_phy_reg(&adapter->hw, IGP02E1000_PHY_POWER_MGMT, | |
847 | phy_data); | |
848 | } | |
849 | ||
0fccd0e9 | 850 | e1000_release_manageability(adapter); |
1da177e4 LT |
851 | } |
852 | ||
67b3c27c AK |
853 | /** |
854 | * Dump the eeprom for users having checksum issues | |
855 | **/ | |
b4ea895d | 856 | static void e1000_dump_eeprom(struct e1000_adapter *adapter) |
67b3c27c AK |
857 | { |
858 | struct net_device *netdev = adapter->netdev; | |
859 | struct ethtool_eeprom eeprom; | |
860 | const struct ethtool_ops *ops = netdev->ethtool_ops; | |
861 | u8 *data; | |
862 | int i; | |
863 | u16 csum_old, csum_new = 0; | |
864 | ||
865 | eeprom.len = ops->get_eeprom_len(netdev); | |
866 | eeprom.offset = 0; | |
867 | ||
868 | data = kmalloc(eeprom.len, GFP_KERNEL); | |
869 | if (!data) { | |
870 | printk(KERN_ERR "Unable to allocate memory to dump EEPROM" | |
871 | " data\n"); | |
872 | return; | |
873 | } | |
874 | ||
875 | ops->get_eeprom(netdev, &eeprom, data); | |
876 | ||
877 | csum_old = (data[EEPROM_CHECKSUM_REG * 2]) + | |
878 | (data[EEPROM_CHECKSUM_REG * 2 + 1] << 8); | |
879 | for (i = 0; i < EEPROM_CHECKSUM_REG * 2; i += 2) | |
880 | csum_new += data[i] + (data[i + 1] << 8); | |
881 | csum_new = EEPROM_SUM - csum_new; | |
882 | ||
883 | printk(KERN_ERR "/*********************/\n"); | |
884 | printk(KERN_ERR "Current EEPROM Checksum : 0x%04x\n", csum_old); | |
885 | printk(KERN_ERR "Calculated : 0x%04x\n", csum_new); | |
886 | ||
887 | printk(KERN_ERR "Offset Values\n"); | |
888 | printk(KERN_ERR "======== ======\n"); | |
889 | print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, data, 128, 0); | |
890 | ||
891 | printk(KERN_ERR "Include this output when contacting your support " | |
892 | "provider.\n"); | |
893 | printk(KERN_ERR "This is not a software error! Something bad " | |
894 | "happened to your hardware or\n"); | |
895 | printk(KERN_ERR "EEPROM image. Ignoring this " | |
896 | "problem could result in further problems,\n"); | |
897 | printk(KERN_ERR "possibly loss of data, corruption or system hangs!\n"); | |
898 | printk(KERN_ERR "The MAC Address will be reset to 00:00:00:00:00:00, " | |
899 | "which is invalid\n"); | |
900 | printk(KERN_ERR "and requires you to set the proper MAC " | |
901 | "address manually before continuing\n"); | |
902 | printk(KERN_ERR "to enable this network device.\n"); | |
903 | printk(KERN_ERR "Please inspect the EEPROM dump and report the issue " | |
904 | "to your hardware vendor\n"); | |
905 | printk(KERN_ERR "or Intel Customer Support: linux-nics@intel.com\n"); | |
906 | printk(KERN_ERR "/*********************/\n"); | |
907 | ||
908 | kfree(data); | |
909 | } | |
910 | ||
1da177e4 LT |
911 | /** |
912 | * e1000_probe - Device Initialization Routine | |
913 | * @pdev: PCI device information struct | |
914 | * @ent: entry in e1000_pci_tbl | |
915 | * | |
916 | * Returns 0 on success, negative on failure | |
917 | * | |
918 | * e1000_probe initializes an adapter identified by a pci_dev structure. | |
919 | * The OS initialization, configuring of the adapter private structure, | |
920 | * and a hardware reset occur. | |
921 | **/ | |
922 | ||
923 | static int __devinit | |
924 | e1000_probe(struct pci_dev *pdev, | |
925 | const struct pci_device_id *ent) | |
926 | { | |
927 | struct net_device *netdev; | |
928 | struct e1000_adapter *adapter; | |
2d7edb92 | 929 | |
1da177e4 | 930 | static int cards_found = 0; |
120cd576 | 931 | static int global_quad_port_a = 0; /* global ksp3 port a indication */ |
2d7edb92 | 932 | int i, err, pci_using_dac; |
120cd576 | 933 | uint16_t eeprom_data = 0; |
1da177e4 | 934 | uint16_t eeprom_apme_mask = E1000_EEPROM_APME; |
0795af57 JP |
935 | DECLARE_MAC_BUF(mac); |
936 | ||
96838a40 | 937 | if ((err = pci_enable_device(pdev))) |
1da177e4 LT |
938 | return err; |
939 | ||
cd94dd0b AK |
940 | if (!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK)) && |
941 | !(err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))) { | |
1da177e4 LT |
942 | pci_using_dac = 1; |
943 | } else { | |
cd94dd0b AK |
944 | if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK)) && |
945 | (err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))) { | |
1da177e4 | 946 | E1000_ERR("No usable DMA configuration, aborting\n"); |
6dd62ab0 | 947 | goto err_dma; |
1da177e4 LT |
948 | } |
949 | pci_using_dac = 0; | |
950 | } | |
951 | ||
96838a40 | 952 | if ((err = pci_request_regions(pdev, e1000_driver_name))) |
6dd62ab0 | 953 | goto err_pci_reg; |
1da177e4 LT |
954 | |
955 | pci_set_master(pdev); | |
956 | ||
6dd62ab0 | 957 | err = -ENOMEM; |
1da177e4 | 958 | netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
6dd62ab0 | 959 | if (!netdev) |
1da177e4 | 960 | goto err_alloc_etherdev; |
1da177e4 | 961 | |
1da177e4 LT |
962 | SET_NETDEV_DEV(netdev, &pdev->dev); |
963 | ||
964 | pci_set_drvdata(pdev, netdev); | |
60490fe0 | 965 | adapter = netdev_priv(netdev); |
1da177e4 LT |
966 | adapter->netdev = netdev; |
967 | adapter->pdev = pdev; | |
968 | adapter->hw.back = adapter; | |
969 | adapter->msg_enable = (1 << debug) - 1; | |
970 | ||
6dd62ab0 | 971 | err = -EIO; |
3c34ac36 BH |
972 | adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, BAR_0), |
973 | pci_resource_len(pdev, BAR_0)); | |
6dd62ab0 | 974 | if (!adapter->hw.hw_addr) |
1da177e4 | 975 | goto err_ioremap; |
1da177e4 | 976 | |
96838a40 JB |
977 | for (i = BAR_1; i <= BAR_5; i++) { |
978 | if (pci_resource_len(pdev, i) == 0) | |
1da177e4 | 979 | continue; |
96838a40 | 980 | if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { |
1da177e4 LT |
981 | adapter->hw.io_base = pci_resource_start(pdev, i); |
982 | break; | |
983 | } | |
984 | } | |
985 | ||
986 | netdev->open = &e1000_open; | |
987 | netdev->stop = &e1000_close; | |
988 | netdev->hard_start_xmit = &e1000_xmit_frame; | |
989 | netdev->get_stats = &e1000_get_stats; | |
db0ce50d | 990 | netdev->set_rx_mode = &e1000_set_rx_mode; |
1da177e4 LT |
991 | netdev->set_mac_address = &e1000_set_mac; |
992 | netdev->change_mtu = &e1000_change_mtu; | |
993 | netdev->do_ioctl = &e1000_ioctl; | |
994 | e1000_set_ethtool_ops(netdev); | |
995 | netdev->tx_timeout = &e1000_tx_timeout; | |
996 | netdev->watchdog_timeo = 5 * HZ; | |
997 | #ifdef CONFIG_E1000_NAPI | |
bea3348e | 998 | netif_napi_add(netdev, &adapter->napi, e1000_clean, 64); |
1da177e4 LT |
999 | #endif |
1000 | netdev->vlan_rx_register = e1000_vlan_rx_register; | |
1001 | netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid; | |
1002 | netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid; | |
1003 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
1004 | netdev->poll_controller = e1000_netpoll; | |
1005 | #endif | |
0eb5a34c | 1006 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
1da177e4 | 1007 | |
1da177e4 LT |
1008 | adapter->bd_number = cards_found; |
1009 | ||
1010 | /* setup the private structure */ | |
1011 | ||
96838a40 | 1012 | if ((err = e1000_sw_init(adapter))) |
1da177e4 LT |
1013 | goto err_sw_init; |
1014 | ||
6dd62ab0 | 1015 | err = -EIO; |
cd94dd0b AK |
1016 | /* Flash BAR mapping must happen after e1000_sw_init |
1017 | * because it depends on mac_type */ | |
1018 | if ((adapter->hw.mac_type == e1000_ich8lan) && | |
1019 | (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) { | |
3c34ac36 BH |
1020 | adapter->hw.flash_address = |
1021 | ioremap(pci_resource_start(pdev, 1), | |
1022 | pci_resource_len(pdev, 1)); | |
6dd62ab0 | 1023 | if (!adapter->hw.flash_address) |
cd94dd0b | 1024 | goto err_flashmap; |
cd94dd0b AK |
1025 | } |
1026 | ||
6dd62ab0 | 1027 | if (e1000_check_phy_reset_block(&adapter->hw)) |
2d7edb92 MC |
1028 | DPRINTK(PROBE, INFO, "PHY reset is blocked due to SOL/IDER session.\n"); |
1029 | ||
96838a40 | 1030 | if (adapter->hw.mac_type >= e1000_82543) { |
1da177e4 LT |
1031 | netdev->features = NETIF_F_SG | |
1032 | NETIF_F_HW_CSUM | | |
1033 | NETIF_F_HW_VLAN_TX | | |
1034 | NETIF_F_HW_VLAN_RX | | |
1035 | NETIF_F_HW_VLAN_FILTER; | |
cd94dd0b AK |
1036 | if (adapter->hw.mac_type == e1000_ich8lan) |
1037 | netdev->features &= ~NETIF_F_HW_VLAN_FILTER; | |
1da177e4 LT |
1038 | } |
1039 | ||
96838a40 | 1040 | if ((adapter->hw.mac_type >= e1000_82544) && |
1da177e4 LT |
1041 | (adapter->hw.mac_type != e1000_82547)) |
1042 | netdev->features |= NETIF_F_TSO; | |
2d7edb92 | 1043 | |
96838a40 | 1044 | if (adapter->hw.mac_type > e1000_82547_rev_2) |
87ca4e5b | 1045 | netdev->features |= NETIF_F_TSO6; |
96838a40 | 1046 | if (pci_using_dac) |
1da177e4 LT |
1047 | netdev->features |= NETIF_F_HIGHDMA; |
1048 | ||
76c224bc AK |
1049 | netdev->features |= NETIF_F_LLTX; |
1050 | ||
2d7edb92 MC |
1051 | adapter->en_mng_pt = e1000_enable_mng_pass_thru(&adapter->hw); |
1052 | ||
cd94dd0b | 1053 | /* initialize eeprom parameters */ |
cd94dd0b AK |
1054 | if (e1000_init_eeprom_params(&adapter->hw)) { |
1055 | E1000_ERR("EEPROM initialization failed\n"); | |
6dd62ab0 | 1056 | goto err_eeprom; |
cd94dd0b AK |
1057 | } |
1058 | ||
96838a40 | 1059 | /* before reading the EEPROM, reset the controller to |
1da177e4 | 1060 | * put the device in a known good starting state */ |
96838a40 | 1061 | |
1da177e4 LT |
1062 | e1000_reset_hw(&adapter->hw); |
1063 | ||
1064 | /* make sure the EEPROM is good */ | |
96838a40 | 1065 | if (e1000_validate_eeprom_checksum(&adapter->hw) < 0) { |
1da177e4 | 1066 | DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n"); |
67b3c27c AK |
1067 | e1000_dump_eeprom(adapter); |
1068 | /* | |
1069 | * set MAC address to all zeroes to invalidate and temporary | |
1070 | * disable this device for the user. This blocks regular | |
1071 | * traffic while still permitting ethtool ioctls from reaching | |
1072 | * the hardware as well as allowing the user to run the | |
1073 | * interface after manually setting a hw addr using | |
1074 | * `ip set address` | |
1075 | */ | |
1076 | memset(adapter->hw.mac_addr, 0, netdev->addr_len); | |
1077 | } else { | |
1078 | /* copy the MAC address out of the EEPROM */ | |
1079 | if (e1000_read_mac_addr(&adapter->hw)) | |
1080 | DPRINTK(PROBE, ERR, "EEPROM Read Error\n"); | |
1da177e4 | 1081 | } |
67b3c27c | 1082 | /* don't block initalization here due to bad MAC address */ |
1da177e4 | 1083 | memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); |
9beb0ac1 | 1084 | memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len); |
1da177e4 | 1085 | |
67b3c27c | 1086 | if (!is_valid_ether_addr(netdev->perm_addr)) |
1da177e4 | 1087 | DPRINTK(PROBE, ERR, "Invalid MAC Address\n"); |
1da177e4 | 1088 | |
1da177e4 LT |
1089 | e1000_get_bus_info(&adapter->hw); |
1090 | ||
1091 | init_timer(&adapter->tx_fifo_stall_timer); | |
1092 | adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall; | |
1093 | adapter->tx_fifo_stall_timer.data = (unsigned long) adapter; | |
1094 | ||
1095 | init_timer(&adapter->watchdog_timer); | |
1096 | adapter->watchdog_timer.function = &e1000_watchdog; | |
1097 | adapter->watchdog_timer.data = (unsigned long) adapter; | |
1098 | ||
1da177e4 LT |
1099 | init_timer(&adapter->phy_info_timer); |
1100 | adapter->phy_info_timer.function = &e1000_update_phy_info; | |
1101 | adapter->phy_info_timer.data = (unsigned long) adapter; | |
1102 | ||
65f27f38 | 1103 | INIT_WORK(&adapter->reset_task, e1000_reset_task); |
1da177e4 | 1104 | |
1da177e4 LT |
1105 | e1000_check_options(adapter); |
1106 | ||
1107 | /* Initial Wake on LAN setting | |
1108 | * If APM wake is enabled in the EEPROM, | |
1109 | * enable the ACPI Magic Packet filter | |
1110 | */ | |
1111 | ||
96838a40 | 1112 | switch (adapter->hw.mac_type) { |
1da177e4 LT |
1113 | case e1000_82542_rev2_0: |
1114 | case e1000_82542_rev2_1: | |
1115 | case e1000_82543: | |
1116 | break; | |
1117 | case e1000_82544: | |
1118 | e1000_read_eeprom(&adapter->hw, | |
1119 | EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); | |
1120 | eeprom_apme_mask = E1000_EEPROM_82544_APM; | |
1121 | break; | |
cd94dd0b AK |
1122 | case e1000_ich8lan: |
1123 | e1000_read_eeprom(&adapter->hw, | |
1124 | EEPROM_INIT_CONTROL1_REG, 1, &eeprom_data); | |
1125 | eeprom_apme_mask = E1000_EEPROM_ICH8_APME; | |
1126 | break; | |
1da177e4 LT |
1127 | case e1000_82546: |
1128 | case e1000_82546_rev_3: | |
fd803241 | 1129 | case e1000_82571: |
6418ecc6 | 1130 | case e1000_80003es2lan: |
96838a40 | 1131 | if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1){ |
1da177e4 LT |
1132 | e1000_read_eeprom(&adapter->hw, |
1133 | EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); | |
1134 | break; | |
1135 | } | |
1136 | /* Fall Through */ | |
1137 | default: | |
1138 | e1000_read_eeprom(&adapter->hw, | |
1139 | EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); | |
1140 | break; | |
1141 | } | |
96838a40 | 1142 | if (eeprom_data & eeprom_apme_mask) |
120cd576 JB |
1143 | adapter->eeprom_wol |= E1000_WUFC_MAG; |
1144 | ||
1145 | /* now that we have the eeprom settings, apply the special cases | |
1146 | * where the eeprom may be wrong or the board simply won't support | |
1147 | * wake on lan on a particular port */ | |
1148 | switch (pdev->device) { | |
1149 | case E1000_DEV_ID_82546GB_PCIE: | |
1150 | adapter->eeprom_wol = 0; | |
1151 | break; | |
1152 | case E1000_DEV_ID_82546EB_FIBER: | |
1153 | case E1000_DEV_ID_82546GB_FIBER: | |
1154 | case E1000_DEV_ID_82571EB_FIBER: | |
1155 | /* Wake events only supported on port A for dual fiber | |
1156 | * regardless of eeprom setting */ | |
1157 | if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1) | |
1158 | adapter->eeprom_wol = 0; | |
1159 | break; | |
1160 | case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3: | |
5881cde8 | 1161 | case E1000_DEV_ID_82571EB_QUAD_COPPER: |
ce57a02c | 1162 | case E1000_DEV_ID_82571EB_QUAD_FIBER: |
fc2307d0 | 1163 | case E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE: |
f4ec7f98 | 1164 | case E1000_DEV_ID_82571PT_QUAD_COPPER: |
120cd576 JB |
1165 | /* if quad port adapter, disable WoL on all but port A */ |
1166 | if (global_quad_port_a != 0) | |
1167 | adapter->eeprom_wol = 0; | |
1168 | else | |
1169 | adapter->quad_port_a = 1; | |
1170 | /* Reset for multiple quad port adapters */ | |
1171 | if (++global_quad_port_a == 4) | |
1172 | global_quad_port_a = 0; | |
1173 | break; | |
1174 | } | |
1175 | ||
1176 | /* initialize the wol settings based on the eeprom settings */ | |
1177 | adapter->wol = adapter->eeprom_wol; | |
1da177e4 | 1178 | |
fb3d47d4 JK |
1179 | /* print bus type/speed/width info */ |
1180 | { | |
1181 | struct e1000_hw *hw = &adapter->hw; | |
1182 | DPRINTK(PROBE, INFO, "(PCI%s:%s:%s) ", | |
1183 | ((hw->bus_type == e1000_bus_type_pcix) ? "-X" : | |
1184 | (hw->bus_type == e1000_bus_type_pci_express ? " Express":"")), | |
1185 | ((hw->bus_speed == e1000_bus_speed_2500) ? "2.5Gb/s" : | |
1186 | (hw->bus_speed == e1000_bus_speed_133) ? "133MHz" : | |
1187 | (hw->bus_speed == e1000_bus_speed_120) ? "120MHz" : | |
1188 | (hw->bus_speed == e1000_bus_speed_100) ? "100MHz" : | |
1189 | (hw->bus_speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"), | |
1190 | ((hw->bus_width == e1000_bus_width_64) ? "64-bit" : | |
1191 | (hw->bus_width == e1000_bus_width_pciex_4) ? "Width x4" : | |
1192 | (hw->bus_width == e1000_bus_width_pciex_1) ? "Width x1" : | |
1193 | "32-bit")); | |
1194 | } | |
1195 | ||
0795af57 | 1196 | printk("%s\n", print_mac(mac, netdev->dev_addr)); |
fb3d47d4 | 1197 | |
14782ca8 AK |
1198 | if (adapter->hw.bus_type == e1000_bus_type_pci_express) { |
1199 | DPRINTK(PROBE, WARNING, "This device (id %04x:%04x) will no " | |
1200 | "longer be supported by this driver in the future.\n", | |
1201 | pdev->vendor, pdev->device); | |
1202 | DPRINTK(PROBE, WARNING, "please use the \"e1000e\" " | |
1203 | "driver instead.\n"); | |
1204 | } | |
1205 | ||
1da177e4 LT |
1206 | /* reset the hardware with the new settings */ |
1207 | e1000_reset(adapter); | |
1208 | ||
b55ccb35 JK |
1209 | /* If the controller is 82573 and f/w is AMT, do not set |
1210 | * DRV_LOAD until the interface is up. For all other cases, | |
1211 | * let the f/w know that the h/w is now under the control | |
1212 | * of the driver. */ | |
1213 | if (adapter->hw.mac_type != e1000_82573 || | |
1214 | !e1000_check_mng_mode(&adapter->hw)) | |
1215 | e1000_get_hw_control(adapter); | |
2d7edb92 | 1216 | |
1314bbf3 AK |
1217 | /* tell the stack to leave us alone until e1000_open() is called */ |
1218 | netif_carrier_off(netdev); | |
1219 | netif_stop_queue(netdev); | |
416b5d10 AK |
1220 | |
1221 | strcpy(netdev->name, "eth%d"); | |
1222 | if ((err = register_netdev(netdev))) | |
1223 | goto err_register; | |
1314bbf3 | 1224 | |
1da177e4 LT |
1225 | DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n"); |
1226 | ||
1227 | cards_found++; | |
1228 | return 0; | |
1229 | ||
1230 | err_register: | |
6dd62ab0 VA |
1231 | e1000_release_hw_control(adapter); |
1232 | err_eeprom: | |
1233 | if (!e1000_check_phy_reset_block(&adapter->hw)) | |
1234 | e1000_phy_hw_reset(&adapter->hw); | |
1235 | ||
cd94dd0b AK |
1236 | if (adapter->hw.flash_address) |
1237 | iounmap(adapter->hw.flash_address); | |
1238 | err_flashmap: | |
6dd62ab0 VA |
1239 | #ifdef CONFIG_E1000_NAPI |
1240 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1241 | dev_put(&adapter->polling_netdev[i]); | |
1242 | #endif | |
1243 | ||
1244 | kfree(adapter->tx_ring); | |
1245 | kfree(adapter->rx_ring); | |
1246 | #ifdef CONFIG_E1000_NAPI | |
1247 | kfree(adapter->polling_netdev); | |
1248 | #endif | |
1da177e4 | 1249 | err_sw_init: |
1da177e4 LT |
1250 | iounmap(adapter->hw.hw_addr); |
1251 | err_ioremap: | |
1252 | free_netdev(netdev); | |
1253 | err_alloc_etherdev: | |
1254 | pci_release_regions(pdev); | |
6dd62ab0 VA |
1255 | err_pci_reg: |
1256 | err_dma: | |
1257 | pci_disable_device(pdev); | |
1da177e4 LT |
1258 | return err; |
1259 | } | |
1260 | ||
1261 | /** | |
1262 | * e1000_remove - Device Removal Routine | |
1263 | * @pdev: PCI device information struct | |
1264 | * | |
1265 | * e1000_remove is called by the PCI subsystem to alert the driver | |
1266 | * that it should release a PCI device. The could be caused by a | |
1267 | * Hot-Plug event, or because the driver is going to be removed from | |
1268 | * memory. | |
1269 | **/ | |
1270 | ||
1271 | static void __devexit | |
1272 | e1000_remove(struct pci_dev *pdev) | |
1273 | { | |
1274 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 1275 | struct e1000_adapter *adapter = netdev_priv(netdev); |
581d708e MC |
1276 | #ifdef CONFIG_E1000_NAPI |
1277 | int i; | |
1278 | #endif | |
1da177e4 | 1279 | |
28e53bdd | 1280 | cancel_work_sync(&adapter->reset_task); |
be2b28ed | 1281 | |
0fccd0e9 | 1282 | e1000_release_manageability(adapter); |
1da177e4 | 1283 | |
b55ccb35 JK |
1284 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
1285 | * would have already happened in close and is redundant. */ | |
1286 | e1000_release_hw_control(adapter); | |
2d7edb92 | 1287 | |
581d708e | 1288 | #ifdef CONFIG_E1000_NAPI |
f56799ea | 1289 | for (i = 0; i < adapter->num_rx_queues; i++) |
15333061 | 1290 | dev_put(&adapter->polling_netdev[i]); |
581d708e | 1291 | #endif |
1da177e4 | 1292 | |
bea3348e SH |
1293 | unregister_netdev(netdev); |
1294 | ||
96838a40 | 1295 | if (!e1000_check_phy_reset_block(&adapter->hw)) |
2d7edb92 | 1296 | e1000_phy_hw_reset(&adapter->hw); |
1da177e4 | 1297 | |
24025e4e MC |
1298 | kfree(adapter->tx_ring); |
1299 | kfree(adapter->rx_ring); | |
1300 | #ifdef CONFIG_E1000_NAPI | |
1301 | kfree(adapter->polling_netdev); | |
1302 | #endif | |
1303 | ||
1da177e4 | 1304 | iounmap(adapter->hw.hw_addr); |
cd94dd0b AK |
1305 | if (adapter->hw.flash_address) |
1306 | iounmap(adapter->hw.flash_address); | |
1da177e4 LT |
1307 | pci_release_regions(pdev); |
1308 | ||
1309 | free_netdev(netdev); | |
1310 | ||
1311 | pci_disable_device(pdev); | |
1312 | } | |
1313 | ||
1314 | /** | |
1315 | * e1000_sw_init - Initialize general software structures (struct e1000_adapter) | |
1316 | * @adapter: board private structure to initialize | |
1317 | * | |
1318 | * e1000_sw_init initializes the Adapter private data structure. | |
1319 | * Fields are initialized based on PCI device information and | |
1320 | * OS network device settings (MTU size). | |
1321 | **/ | |
1322 | ||
1323 | static int __devinit | |
1324 | e1000_sw_init(struct e1000_adapter *adapter) | |
1325 | { | |
1326 | struct e1000_hw *hw = &adapter->hw; | |
1327 | struct net_device *netdev = adapter->netdev; | |
1328 | struct pci_dev *pdev = adapter->pdev; | |
581d708e MC |
1329 | #ifdef CONFIG_E1000_NAPI |
1330 | int i; | |
1331 | #endif | |
1da177e4 LT |
1332 | |
1333 | /* PCI config space info */ | |
1334 | ||
1335 | hw->vendor_id = pdev->vendor; | |
1336 | hw->device_id = pdev->device; | |
1337 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
1338 | hw->subsystem_id = pdev->subsystem_device; | |
44c10138 | 1339 | hw->revision_id = pdev->revision; |
1da177e4 LT |
1340 | |
1341 | pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); | |
1342 | ||
eb0f8054 | 1343 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
9e2feace | 1344 | adapter->rx_ps_bsize0 = E1000_RXBUFFER_128; |
1da177e4 LT |
1345 | hw->max_frame_size = netdev->mtu + |
1346 | ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; | |
1347 | hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; | |
1348 | ||
1349 | /* identify the MAC */ | |
1350 | ||
96838a40 | 1351 | if (e1000_set_mac_type(hw)) { |
1da177e4 LT |
1352 | DPRINTK(PROBE, ERR, "Unknown MAC Type\n"); |
1353 | return -EIO; | |
1354 | } | |
1355 | ||
96838a40 | 1356 | switch (hw->mac_type) { |
1da177e4 LT |
1357 | default: |
1358 | break; | |
1359 | case e1000_82541: | |
1360 | case e1000_82547: | |
1361 | case e1000_82541_rev_2: | |
1362 | case e1000_82547_rev_2: | |
1363 | hw->phy_init_script = 1; | |
1364 | break; | |
1365 | } | |
1366 | ||
1367 | e1000_set_media_type(hw); | |
1368 | ||
c3033b01 JP |
1369 | hw->wait_autoneg_complete = false; |
1370 | hw->tbi_compatibility_en = true; | |
1371 | hw->adaptive_ifs = true; | |
1da177e4 LT |
1372 | |
1373 | /* Copper options */ | |
1374 | ||
96838a40 | 1375 | if (hw->media_type == e1000_media_type_copper) { |
1da177e4 | 1376 | hw->mdix = AUTO_ALL_MODES; |
c3033b01 | 1377 | hw->disable_polarity_correction = false; |
1da177e4 LT |
1378 | hw->master_slave = E1000_MASTER_SLAVE; |
1379 | } | |
1380 | ||
f56799ea JK |
1381 | adapter->num_tx_queues = 1; |
1382 | adapter->num_rx_queues = 1; | |
581d708e MC |
1383 | |
1384 | if (e1000_alloc_queues(adapter)) { | |
1385 | DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n"); | |
1386 | return -ENOMEM; | |
1387 | } | |
1388 | ||
1389 | #ifdef CONFIG_E1000_NAPI | |
f56799ea | 1390 | for (i = 0; i < adapter->num_rx_queues; i++) { |
581d708e | 1391 | adapter->polling_netdev[i].priv = adapter; |
581d708e MC |
1392 | dev_hold(&adapter->polling_netdev[i]); |
1393 | set_bit(__LINK_STATE_START, &adapter->polling_netdev[i].state); | |
1394 | } | |
7bfa4816 | 1395 | spin_lock_init(&adapter->tx_queue_lock); |
24025e4e MC |
1396 | #endif |
1397 | ||
47313054 HX |
1398 | /* Explicitly disable IRQ since the NIC can be in any state. */ |
1399 | atomic_set(&adapter->irq_sem, 0); | |
1400 | e1000_irq_disable(adapter); | |
1401 | ||
1da177e4 | 1402 | spin_lock_init(&adapter->stats_lock); |
1da177e4 | 1403 | |
1314bbf3 AK |
1404 | set_bit(__E1000_DOWN, &adapter->flags); |
1405 | ||
1da177e4 LT |
1406 | return 0; |
1407 | } | |
1408 | ||
581d708e MC |
1409 | /** |
1410 | * e1000_alloc_queues - Allocate memory for all rings | |
1411 | * @adapter: board private structure to initialize | |
1412 | * | |
1413 | * We allocate one ring per queue at run-time since we don't know the | |
1414 | * number of queues at compile-time. The polling_netdev array is | |
1415 | * intended for Multiqueue, but should work fine with a single queue. | |
1416 | **/ | |
1417 | ||
1418 | static int __devinit | |
1419 | e1000_alloc_queues(struct e1000_adapter *adapter) | |
1420 | { | |
1c7e5b12 YB |
1421 | adapter->tx_ring = kcalloc(adapter->num_tx_queues, |
1422 | sizeof(struct e1000_tx_ring), GFP_KERNEL); | |
581d708e MC |
1423 | if (!adapter->tx_ring) |
1424 | return -ENOMEM; | |
581d708e | 1425 | |
1c7e5b12 YB |
1426 | adapter->rx_ring = kcalloc(adapter->num_rx_queues, |
1427 | sizeof(struct e1000_rx_ring), GFP_KERNEL); | |
581d708e MC |
1428 | if (!adapter->rx_ring) { |
1429 | kfree(adapter->tx_ring); | |
1430 | return -ENOMEM; | |
1431 | } | |
581d708e MC |
1432 | |
1433 | #ifdef CONFIG_E1000_NAPI | |
1c7e5b12 YB |
1434 | adapter->polling_netdev = kcalloc(adapter->num_rx_queues, |
1435 | sizeof(struct net_device), | |
1436 | GFP_KERNEL); | |
581d708e MC |
1437 | if (!adapter->polling_netdev) { |
1438 | kfree(adapter->tx_ring); | |
1439 | kfree(adapter->rx_ring); | |
1440 | return -ENOMEM; | |
1441 | } | |
581d708e MC |
1442 | #endif |
1443 | ||
1444 | return E1000_SUCCESS; | |
1445 | } | |
1446 | ||
1da177e4 LT |
1447 | /** |
1448 | * e1000_open - Called when a network interface is made active | |
1449 | * @netdev: network interface device structure | |
1450 | * | |
1451 | * Returns 0 on success, negative value on failure | |
1452 | * | |
1453 | * The open entry point is called when a network interface is made | |
1454 | * active by the system (IFF_UP). At this point all resources needed | |
1455 | * for transmit and receive operations are allocated, the interrupt | |
1456 | * handler is registered with the OS, the watchdog timer is started, | |
1457 | * and the stack is notified that the interface is ready. | |
1458 | **/ | |
1459 | ||
1460 | static int | |
1461 | e1000_open(struct net_device *netdev) | |
1462 | { | |
60490fe0 | 1463 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1464 | int err; |
1465 | ||
2db10a08 | 1466 | /* disallow open during test */ |
1314bbf3 | 1467 | if (test_bit(__E1000_TESTING, &adapter->flags)) |
2db10a08 AK |
1468 | return -EBUSY; |
1469 | ||
1da177e4 | 1470 | /* allocate transmit descriptors */ |
e0aac5a2 AK |
1471 | err = e1000_setup_all_tx_resources(adapter); |
1472 | if (err) | |
1da177e4 LT |
1473 | goto err_setup_tx; |
1474 | ||
1475 | /* allocate receive descriptors */ | |
e0aac5a2 | 1476 | err = e1000_setup_all_rx_resources(adapter); |
b5bf28cd | 1477 | if (err) |
e0aac5a2 | 1478 | goto err_setup_rx; |
b5bf28cd | 1479 | |
79f05bf0 AK |
1480 | e1000_power_up_phy(adapter); |
1481 | ||
2d7edb92 | 1482 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
96838a40 | 1483 | if ((adapter->hw.mng_cookie.status & |
2d7edb92 MC |
1484 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { |
1485 | e1000_update_mng_vlan(adapter); | |
1486 | } | |
1da177e4 | 1487 | |
b55ccb35 JK |
1488 | /* If AMT is enabled, let the firmware know that the network |
1489 | * interface is now open */ | |
1490 | if (adapter->hw.mac_type == e1000_82573 && | |
1491 | e1000_check_mng_mode(&adapter->hw)) | |
1492 | e1000_get_hw_control(adapter); | |
1493 | ||
e0aac5a2 AK |
1494 | /* before we allocate an interrupt, we must be ready to handle it. |
1495 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt | |
1496 | * as soon as we call pci_request_irq, so we have to setup our | |
1497 | * clean_rx handler before we do so. */ | |
1498 | e1000_configure(adapter); | |
1499 | ||
1500 | err = e1000_request_irq(adapter); | |
1501 | if (err) | |
1502 | goto err_req_irq; | |
1503 | ||
1504 | /* From here on the code is the same as e1000_up() */ | |
1505 | clear_bit(__E1000_DOWN, &adapter->flags); | |
1506 | ||
47313054 | 1507 | #ifdef CONFIG_E1000_NAPI |
bea3348e | 1508 | napi_enable(&adapter->napi); |
47313054 HX |
1509 | #endif |
1510 | ||
e0aac5a2 AK |
1511 | e1000_irq_enable(adapter); |
1512 | ||
1513 | /* fire a link status change interrupt to start the watchdog */ | |
1514 | E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_LSC); | |
1515 | ||
1da177e4 LT |
1516 | return E1000_SUCCESS; |
1517 | ||
b5bf28cd | 1518 | err_req_irq: |
e0aac5a2 AK |
1519 | e1000_release_hw_control(adapter); |
1520 | e1000_power_down_phy(adapter); | |
581d708e | 1521 | e1000_free_all_rx_resources(adapter); |
1da177e4 | 1522 | err_setup_rx: |
581d708e | 1523 | e1000_free_all_tx_resources(adapter); |
1da177e4 LT |
1524 | err_setup_tx: |
1525 | e1000_reset(adapter); | |
1526 | ||
1527 | return err; | |
1528 | } | |
1529 | ||
1530 | /** | |
1531 | * e1000_close - Disables a network interface | |
1532 | * @netdev: network interface device structure | |
1533 | * | |
1534 | * Returns 0, this is not allowed to fail | |
1535 | * | |
1536 | * The close entry point is called when an interface is de-activated | |
1537 | * by the OS. The hardware is still under the drivers control, but | |
1538 | * needs to be disabled. A global MAC reset is issued to stop the | |
1539 | * hardware, and all transmit and receive resources are freed. | |
1540 | **/ | |
1541 | ||
1542 | static int | |
1543 | e1000_close(struct net_device *netdev) | |
1544 | { | |
60490fe0 | 1545 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 1546 | |
2db10a08 | 1547 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
1da177e4 | 1548 | e1000_down(adapter); |
79f05bf0 | 1549 | e1000_power_down_phy(adapter); |
2db10a08 | 1550 | e1000_free_irq(adapter); |
1da177e4 | 1551 | |
581d708e MC |
1552 | e1000_free_all_tx_resources(adapter); |
1553 | e1000_free_all_rx_resources(adapter); | |
1da177e4 | 1554 | |
4666560a BA |
1555 | /* kill manageability vlan ID if supported, but not if a vlan with |
1556 | * the same ID is registered on the host OS (let 8021q kill it) */ | |
96838a40 | 1557 | if ((adapter->hw.mng_cookie.status & |
4666560a BA |
1558 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
1559 | !(adapter->vlgrp && | |
5c15bdec | 1560 | vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) { |
2d7edb92 MC |
1561 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
1562 | } | |
b55ccb35 JK |
1563 | |
1564 | /* If AMT is enabled, let the firmware know that the network | |
1565 | * interface is now closed */ | |
1566 | if (adapter->hw.mac_type == e1000_82573 && | |
1567 | e1000_check_mng_mode(&adapter->hw)) | |
1568 | e1000_release_hw_control(adapter); | |
1569 | ||
1da177e4 LT |
1570 | return 0; |
1571 | } | |
1572 | ||
1573 | /** | |
1574 | * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary | |
1575 | * @adapter: address of board private structure | |
2d7edb92 MC |
1576 | * @start: address of beginning of memory |
1577 | * @len: length of memory | |
1da177e4 | 1578 | **/ |
c3033b01 | 1579 | static bool |
1da177e4 LT |
1580 | e1000_check_64k_bound(struct e1000_adapter *adapter, |
1581 | void *start, unsigned long len) | |
1582 | { | |
1583 | unsigned long begin = (unsigned long) start; | |
1584 | unsigned long end = begin + len; | |
1585 | ||
2648345f MC |
1586 | /* First rev 82545 and 82546 need to not allow any memory |
1587 | * write location to cross 64k boundary due to errata 23 */ | |
1da177e4 | 1588 | if (adapter->hw.mac_type == e1000_82545 || |
2648345f | 1589 | adapter->hw.mac_type == e1000_82546) { |
c3033b01 | 1590 | return ((begin ^ (end - 1)) >> 16) != 0 ? false : true; |
1da177e4 LT |
1591 | } |
1592 | ||
c3033b01 | 1593 | return true; |
1da177e4 LT |
1594 | } |
1595 | ||
1596 | /** | |
1597 | * e1000_setup_tx_resources - allocate Tx resources (Descriptors) | |
1598 | * @adapter: board private structure | |
581d708e | 1599 | * @txdr: tx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1600 | * |
1601 | * Return 0 on success, negative on failure | |
1602 | **/ | |
1603 | ||
3ad2cc67 | 1604 | static int |
581d708e MC |
1605 | e1000_setup_tx_resources(struct e1000_adapter *adapter, |
1606 | struct e1000_tx_ring *txdr) | |
1da177e4 | 1607 | { |
1da177e4 LT |
1608 | struct pci_dev *pdev = adapter->pdev; |
1609 | int size; | |
1610 | ||
1611 | size = sizeof(struct e1000_buffer) * txdr->count; | |
cd94dd0b | 1612 | txdr->buffer_info = vmalloc(size); |
96838a40 | 1613 | if (!txdr->buffer_info) { |
2648345f MC |
1614 | DPRINTK(PROBE, ERR, |
1615 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1da177e4 LT |
1616 | return -ENOMEM; |
1617 | } | |
1618 | memset(txdr->buffer_info, 0, size); | |
1619 | ||
1620 | /* round up to nearest 4K */ | |
1621 | ||
1622 | txdr->size = txdr->count * sizeof(struct e1000_tx_desc); | |
9099cfb9 | 1623 | txdr->size = ALIGN(txdr->size, 4096); |
1da177e4 LT |
1624 | |
1625 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); | |
96838a40 | 1626 | if (!txdr->desc) { |
1da177e4 | 1627 | setup_tx_desc_die: |
1da177e4 | 1628 | vfree(txdr->buffer_info); |
2648345f MC |
1629 | DPRINTK(PROBE, ERR, |
1630 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1da177e4 LT |
1631 | return -ENOMEM; |
1632 | } | |
1633 | ||
2648345f | 1634 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1635 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
1636 | void *olddesc = txdr->desc; | |
1637 | dma_addr_t olddma = txdr->dma; | |
2648345f MC |
1638 | DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes " |
1639 | "at %p\n", txdr->size, txdr->desc); | |
1640 | /* Try again, without freeing the previous */ | |
1da177e4 | 1641 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); |
2648345f | 1642 | /* Failed allocation, critical failure */ |
96838a40 | 1643 | if (!txdr->desc) { |
1da177e4 LT |
1644 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1645 | goto setup_tx_desc_die; | |
1646 | } | |
1647 | ||
1648 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { | |
1649 | /* give up */ | |
2648345f MC |
1650 | pci_free_consistent(pdev, txdr->size, txdr->desc, |
1651 | txdr->dma); | |
1da177e4 LT |
1652 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1653 | DPRINTK(PROBE, ERR, | |
2648345f MC |
1654 | "Unable to allocate aligned memory " |
1655 | "for the transmit descriptor ring\n"); | |
1da177e4 LT |
1656 | vfree(txdr->buffer_info); |
1657 | return -ENOMEM; | |
1658 | } else { | |
2648345f | 1659 | /* Free old allocation, new allocation was successful */ |
1da177e4 LT |
1660 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1661 | } | |
1662 | } | |
1663 | memset(txdr->desc, 0, txdr->size); | |
1664 | ||
1665 | txdr->next_to_use = 0; | |
1666 | txdr->next_to_clean = 0; | |
2ae76d98 | 1667 | spin_lock_init(&txdr->tx_lock); |
1da177e4 LT |
1668 | |
1669 | return 0; | |
1670 | } | |
1671 | ||
581d708e MC |
1672 | /** |
1673 | * e1000_setup_all_tx_resources - wrapper to allocate Tx resources | |
1674 | * (Descriptors) for all queues | |
1675 | * @adapter: board private structure | |
1676 | * | |
581d708e MC |
1677 | * Return 0 on success, negative on failure |
1678 | **/ | |
1679 | ||
1680 | int | |
1681 | e1000_setup_all_tx_resources(struct e1000_adapter *adapter) | |
1682 | { | |
1683 | int i, err = 0; | |
1684 | ||
f56799ea | 1685 | for (i = 0; i < adapter->num_tx_queues; i++) { |
581d708e MC |
1686 | err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
1687 | if (err) { | |
1688 | DPRINTK(PROBE, ERR, | |
1689 | "Allocation for Tx Queue %u failed\n", i); | |
3fbbc72e VA |
1690 | for (i-- ; i >= 0; i--) |
1691 | e1000_free_tx_resources(adapter, | |
1692 | &adapter->tx_ring[i]); | |
581d708e MC |
1693 | break; |
1694 | } | |
1695 | } | |
1696 | ||
1697 | return err; | |
1698 | } | |
1699 | ||
1da177e4 LT |
1700 | /** |
1701 | * e1000_configure_tx - Configure 8254x Transmit Unit after Reset | |
1702 | * @adapter: board private structure | |
1703 | * | |
1704 | * Configure the Tx unit of the MAC after a reset. | |
1705 | **/ | |
1706 | ||
1707 | static void | |
1708 | e1000_configure_tx(struct e1000_adapter *adapter) | |
1709 | { | |
581d708e MC |
1710 | uint64_t tdba; |
1711 | struct e1000_hw *hw = &adapter->hw; | |
1712 | uint32_t tdlen, tctl, tipg, tarc; | |
0fadb059 | 1713 | uint32_t ipgr1, ipgr2; |
1da177e4 LT |
1714 | |
1715 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1716 | ||
f56799ea | 1717 | switch (adapter->num_tx_queues) { |
24025e4e MC |
1718 | case 1: |
1719 | default: | |
581d708e MC |
1720 | tdba = adapter->tx_ring[0].dma; |
1721 | tdlen = adapter->tx_ring[0].count * | |
1722 | sizeof(struct e1000_tx_desc); | |
581d708e | 1723 | E1000_WRITE_REG(hw, TDLEN, tdlen); |
4ca213a6 AK |
1724 | E1000_WRITE_REG(hw, TDBAH, (tdba >> 32)); |
1725 | E1000_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL)); | |
581d708e | 1726 | E1000_WRITE_REG(hw, TDT, 0); |
4ca213a6 | 1727 | E1000_WRITE_REG(hw, TDH, 0); |
6a951698 AK |
1728 | adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH); |
1729 | adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT); | |
24025e4e MC |
1730 | break; |
1731 | } | |
1da177e4 LT |
1732 | |
1733 | /* Set the default values for the Tx Inter Packet Gap timer */ | |
d89b6c67 JB |
1734 | if (adapter->hw.mac_type <= e1000_82547_rev_2 && |
1735 | (hw->media_type == e1000_media_type_fiber || | |
1736 | hw->media_type == e1000_media_type_internal_serdes)) | |
0fadb059 JK |
1737 | tipg = DEFAULT_82543_TIPG_IPGT_FIBER; |
1738 | else | |
1739 | tipg = DEFAULT_82543_TIPG_IPGT_COPPER; | |
1740 | ||
581d708e | 1741 | switch (hw->mac_type) { |
1da177e4 LT |
1742 | case e1000_82542_rev2_0: |
1743 | case e1000_82542_rev2_1: | |
1744 | tipg = DEFAULT_82542_TIPG_IPGT; | |
0fadb059 JK |
1745 | ipgr1 = DEFAULT_82542_TIPG_IPGR1; |
1746 | ipgr2 = DEFAULT_82542_TIPG_IPGR2; | |
1da177e4 | 1747 | break; |
87041639 JK |
1748 | case e1000_80003es2lan: |
1749 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; | |
1750 | ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; | |
1751 | break; | |
1da177e4 | 1752 | default: |
0fadb059 JK |
1753 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
1754 | ipgr2 = DEFAULT_82543_TIPG_IPGR2; | |
1755 | break; | |
1da177e4 | 1756 | } |
0fadb059 JK |
1757 | tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; |
1758 | tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; | |
581d708e | 1759 | E1000_WRITE_REG(hw, TIPG, tipg); |
1da177e4 LT |
1760 | |
1761 | /* Set the Tx Interrupt Delay register */ | |
1762 | ||
581d708e MC |
1763 | E1000_WRITE_REG(hw, TIDV, adapter->tx_int_delay); |
1764 | if (hw->mac_type >= e1000_82540) | |
1765 | E1000_WRITE_REG(hw, TADV, adapter->tx_abs_int_delay); | |
1da177e4 LT |
1766 | |
1767 | /* Program the Transmit Control Register */ | |
1768 | ||
581d708e | 1769 | tctl = E1000_READ_REG(hw, TCTL); |
1da177e4 | 1770 | tctl &= ~E1000_TCTL_CT; |
7e6c9861 | 1771 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
1da177e4 LT |
1772 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
1773 | ||
2ae76d98 MC |
1774 | if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) { |
1775 | tarc = E1000_READ_REG(hw, TARC0); | |
90fb5135 AK |
1776 | /* set the speed mode bit, we'll clear it if we're not at |
1777 | * gigabit link later */ | |
09ae3e88 | 1778 | tarc |= (1 << 21); |
2ae76d98 | 1779 | E1000_WRITE_REG(hw, TARC0, tarc); |
87041639 JK |
1780 | } else if (hw->mac_type == e1000_80003es2lan) { |
1781 | tarc = E1000_READ_REG(hw, TARC0); | |
1782 | tarc |= 1; | |
87041639 JK |
1783 | E1000_WRITE_REG(hw, TARC0, tarc); |
1784 | tarc = E1000_READ_REG(hw, TARC1); | |
1785 | tarc |= 1; | |
1786 | E1000_WRITE_REG(hw, TARC1, tarc); | |
2ae76d98 MC |
1787 | } |
1788 | ||
581d708e | 1789 | e1000_config_collision_dist(hw); |
1da177e4 LT |
1790 | |
1791 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
6a042dab JB |
1792 | adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; |
1793 | ||
1794 | /* only set IDE if we are delaying interrupts using the timers */ | |
1795 | if (adapter->tx_int_delay) | |
1796 | adapter->txd_cmd |= E1000_TXD_CMD_IDE; | |
1da177e4 | 1797 | |
581d708e | 1798 | if (hw->mac_type < e1000_82543) |
1da177e4 LT |
1799 | adapter->txd_cmd |= E1000_TXD_CMD_RPS; |
1800 | else | |
1801 | adapter->txd_cmd |= E1000_TXD_CMD_RS; | |
1802 | ||
1803 | /* Cache if we're 82544 running in PCI-X because we'll | |
1804 | * need this to apply a workaround later in the send path. */ | |
581d708e MC |
1805 | if (hw->mac_type == e1000_82544 && |
1806 | hw->bus_type == e1000_bus_type_pcix) | |
1da177e4 | 1807 | adapter->pcix_82544 = 1; |
7e6c9861 JK |
1808 | |
1809 | E1000_WRITE_REG(hw, TCTL, tctl); | |
1810 | ||
1da177e4 LT |
1811 | } |
1812 | ||
1813 | /** | |
1814 | * e1000_setup_rx_resources - allocate Rx resources (Descriptors) | |
1815 | * @adapter: board private structure | |
581d708e | 1816 | * @rxdr: rx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1817 | * |
1818 | * Returns 0 on success, negative on failure | |
1819 | **/ | |
1820 | ||
3ad2cc67 | 1821 | static int |
581d708e MC |
1822 | e1000_setup_rx_resources(struct e1000_adapter *adapter, |
1823 | struct e1000_rx_ring *rxdr) | |
1da177e4 | 1824 | { |
1da177e4 | 1825 | struct pci_dev *pdev = adapter->pdev; |
2d7edb92 | 1826 | int size, desc_len; |
1da177e4 LT |
1827 | |
1828 | size = sizeof(struct e1000_buffer) * rxdr->count; | |
cd94dd0b | 1829 | rxdr->buffer_info = vmalloc(size); |
581d708e | 1830 | if (!rxdr->buffer_info) { |
2648345f MC |
1831 | DPRINTK(PROBE, ERR, |
1832 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1da177e4 LT |
1833 | return -ENOMEM; |
1834 | } | |
1835 | memset(rxdr->buffer_info, 0, size); | |
1836 | ||
1c7e5b12 YB |
1837 | rxdr->ps_page = kcalloc(rxdr->count, sizeof(struct e1000_ps_page), |
1838 | GFP_KERNEL); | |
96838a40 | 1839 | if (!rxdr->ps_page) { |
2d7edb92 MC |
1840 | vfree(rxdr->buffer_info); |
1841 | DPRINTK(PROBE, ERR, | |
1842 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1843 | return -ENOMEM; | |
1844 | } | |
2d7edb92 | 1845 | |
1c7e5b12 YB |
1846 | rxdr->ps_page_dma = kcalloc(rxdr->count, |
1847 | sizeof(struct e1000_ps_page_dma), | |
1848 | GFP_KERNEL); | |
96838a40 | 1849 | if (!rxdr->ps_page_dma) { |
2d7edb92 MC |
1850 | vfree(rxdr->buffer_info); |
1851 | kfree(rxdr->ps_page); | |
1852 | DPRINTK(PROBE, ERR, | |
1853 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1854 | return -ENOMEM; | |
1855 | } | |
2d7edb92 | 1856 | |
96838a40 | 1857 | if (adapter->hw.mac_type <= e1000_82547_rev_2) |
2d7edb92 MC |
1858 | desc_len = sizeof(struct e1000_rx_desc); |
1859 | else | |
1860 | desc_len = sizeof(union e1000_rx_desc_packet_split); | |
1861 | ||
1da177e4 LT |
1862 | /* Round up to nearest 4K */ |
1863 | ||
2d7edb92 | 1864 | rxdr->size = rxdr->count * desc_len; |
9099cfb9 | 1865 | rxdr->size = ALIGN(rxdr->size, 4096); |
1da177e4 LT |
1866 | |
1867 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); | |
1868 | ||
581d708e MC |
1869 | if (!rxdr->desc) { |
1870 | DPRINTK(PROBE, ERR, | |
1871 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1da177e4 | 1872 | setup_rx_desc_die: |
1da177e4 | 1873 | vfree(rxdr->buffer_info); |
2d7edb92 MC |
1874 | kfree(rxdr->ps_page); |
1875 | kfree(rxdr->ps_page_dma); | |
1da177e4 LT |
1876 | return -ENOMEM; |
1877 | } | |
1878 | ||
2648345f | 1879 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1880 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
1881 | void *olddesc = rxdr->desc; | |
1882 | dma_addr_t olddma = rxdr->dma; | |
2648345f MC |
1883 | DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes " |
1884 | "at %p\n", rxdr->size, rxdr->desc); | |
1885 | /* Try again, without freeing the previous */ | |
1da177e4 | 1886 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); |
2648345f | 1887 | /* Failed allocation, critical failure */ |
581d708e | 1888 | if (!rxdr->desc) { |
1da177e4 | 1889 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
581d708e MC |
1890 | DPRINTK(PROBE, ERR, |
1891 | "Unable to allocate memory " | |
1892 | "for the receive descriptor ring\n"); | |
1da177e4 LT |
1893 | goto setup_rx_desc_die; |
1894 | } | |
1895 | ||
1896 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { | |
1897 | /* give up */ | |
2648345f MC |
1898 | pci_free_consistent(pdev, rxdr->size, rxdr->desc, |
1899 | rxdr->dma); | |
1da177e4 | 1900 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
2648345f MC |
1901 | DPRINTK(PROBE, ERR, |
1902 | "Unable to allocate aligned memory " | |
1903 | "for the receive descriptor ring\n"); | |
581d708e | 1904 | goto setup_rx_desc_die; |
1da177e4 | 1905 | } else { |
2648345f | 1906 | /* Free old allocation, new allocation was successful */ |
1da177e4 LT |
1907 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
1908 | } | |
1909 | } | |
1910 | memset(rxdr->desc, 0, rxdr->size); | |
1911 | ||
1912 | rxdr->next_to_clean = 0; | |
1913 | rxdr->next_to_use = 0; | |
1914 | ||
1915 | return 0; | |
1916 | } | |
1917 | ||
581d708e MC |
1918 | /** |
1919 | * e1000_setup_all_rx_resources - wrapper to allocate Rx resources | |
1920 | * (Descriptors) for all queues | |
1921 | * @adapter: board private structure | |
1922 | * | |
581d708e MC |
1923 | * Return 0 on success, negative on failure |
1924 | **/ | |
1925 | ||
1926 | int | |
1927 | e1000_setup_all_rx_resources(struct e1000_adapter *adapter) | |
1928 | { | |
1929 | int i, err = 0; | |
1930 | ||
f56799ea | 1931 | for (i = 0; i < adapter->num_rx_queues; i++) { |
581d708e MC |
1932 | err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
1933 | if (err) { | |
1934 | DPRINTK(PROBE, ERR, | |
1935 | "Allocation for Rx Queue %u failed\n", i); | |
3fbbc72e VA |
1936 | for (i-- ; i >= 0; i--) |
1937 | e1000_free_rx_resources(adapter, | |
1938 | &adapter->rx_ring[i]); | |
581d708e MC |
1939 | break; |
1940 | } | |
1941 | } | |
1942 | ||
1943 | return err; | |
1944 | } | |
1945 | ||
1da177e4 | 1946 | /** |
2648345f | 1947 | * e1000_setup_rctl - configure the receive control registers |
1da177e4 LT |
1948 | * @adapter: Board private structure |
1949 | **/ | |
e4c811c9 MC |
1950 | #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ |
1951 | (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) | |
1da177e4 LT |
1952 | static void |
1953 | e1000_setup_rctl(struct e1000_adapter *adapter) | |
1954 | { | |
2d7edb92 MC |
1955 | uint32_t rctl, rfctl; |
1956 | uint32_t psrctl = 0; | |
35ec56bb | 1957 | #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT |
e4c811c9 MC |
1958 | uint32_t pages = 0; |
1959 | #endif | |
1da177e4 LT |
1960 | |
1961 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
1962 | ||
1963 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
1964 | ||
1965 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | | |
1966 | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | | |
1967 | (adapter->hw.mc_filter_type << E1000_RCTL_MO_SHIFT); | |
1968 | ||
0fadb059 | 1969 | if (adapter->hw.tbi_compatibility_on == 1) |
1da177e4 LT |
1970 | rctl |= E1000_RCTL_SBP; |
1971 | else | |
1972 | rctl &= ~E1000_RCTL_SBP; | |
1973 | ||
2d7edb92 MC |
1974 | if (adapter->netdev->mtu <= ETH_DATA_LEN) |
1975 | rctl &= ~E1000_RCTL_LPE; | |
1976 | else | |
1977 | rctl |= E1000_RCTL_LPE; | |
1978 | ||
1da177e4 | 1979 | /* Setup buffer sizes */ |
9e2feace AK |
1980 | rctl &= ~E1000_RCTL_SZ_4096; |
1981 | rctl |= E1000_RCTL_BSEX; | |
1982 | switch (adapter->rx_buffer_len) { | |
1983 | case E1000_RXBUFFER_256: | |
1984 | rctl |= E1000_RCTL_SZ_256; | |
1985 | rctl &= ~E1000_RCTL_BSEX; | |
1986 | break; | |
1987 | case E1000_RXBUFFER_512: | |
1988 | rctl |= E1000_RCTL_SZ_512; | |
1989 | rctl &= ~E1000_RCTL_BSEX; | |
1990 | break; | |
1991 | case E1000_RXBUFFER_1024: | |
1992 | rctl |= E1000_RCTL_SZ_1024; | |
1993 | rctl &= ~E1000_RCTL_BSEX; | |
1994 | break; | |
a1415ee6 JK |
1995 | case E1000_RXBUFFER_2048: |
1996 | default: | |
1997 | rctl |= E1000_RCTL_SZ_2048; | |
1998 | rctl &= ~E1000_RCTL_BSEX; | |
1999 | break; | |
2000 | case E1000_RXBUFFER_4096: | |
2001 | rctl |= E1000_RCTL_SZ_4096; | |
2002 | break; | |
2003 | case E1000_RXBUFFER_8192: | |
2004 | rctl |= E1000_RCTL_SZ_8192; | |
2005 | break; | |
2006 | case E1000_RXBUFFER_16384: | |
2007 | rctl |= E1000_RCTL_SZ_16384; | |
2008 | break; | |
2d7edb92 MC |
2009 | } |
2010 | ||
35ec56bb | 2011 | #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT |
2d7edb92 MC |
2012 | /* 82571 and greater support packet-split where the protocol |
2013 | * header is placed in skb->data and the packet data is | |
2014 | * placed in pages hanging off of skb_shinfo(skb)->nr_frags. | |
2015 | * In the case of a non-split, skb->data is linearly filled, | |
2016 | * followed by the page buffers. Therefore, skb->data is | |
2017 | * sized to hold the largest protocol header. | |
2018 | */ | |
e64d7d02 JB |
2019 | /* allocations using alloc_page take too long for regular MTU |
2020 | * so only enable packet split for jumbo frames */ | |
e4c811c9 | 2021 | pages = PAGE_USE_COUNT(adapter->netdev->mtu); |
e64d7d02 JB |
2022 | if ((adapter->hw.mac_type >= e1000_82571) && (pages <= 3) && |
2023 | PAGE_SIZE <= 16384 && (rctl & E1000_RCTL_LPE)) | |
e4c811c9 MC |
2024 | adapter->rx_ps_pages = pages; |
2025 | else | |
2026 | adapter->rx_ps_pages = 0; | |
2d7edb92 | 2027 | #endif |
e4c811c9 | 2028 | if (adapter->rx_ps_pages) { |
2d7edb92 MC |
2029 | /* Configure extra packet-split registers */ |
2030 | rfctl = E1000_READ_REG(&adapter->hw, RFCTL); | |
2031 | rfctl |= E1000_RFCTL_EXTEN; | |
87ca4e5b AK |
2032 | /* disable packet split support for IPv6 extension headers, |
2033 | * because some malformed IPv6 headers can hang the RX */ | |
2034 | rfctl |= (E1000_RFCTL_IPV6_EX_DIS | | |
2035 | E1000_RFCTL_NEW_IPV6_EXT_DIS); | |
2036 | ||
2d7edb92 MC |
2037 | E1000_WRITE_REG(&adapter->hw, RFCTL, rfctl); |
2038 | ||
7dfee0cb | 2039 | rctl |= E1000_RCTL_DTYP_PS; |
96838a40 | 2040 | |
2d7edb92 MC |
2041 | psrctl |= adapter->rx_ps_bsize0 >> |
2042 | E1000_PSRCTL_BSIZE0_SHIFT; | |
e4c811c9 MC |
2043 | |
2044 | switch (adapter->rx_ps_pages) { | |
2045 | case 3: | |
2046 | psrctl |= PAGE_SIZE << | |
2047 | E1000_PSRCTL_BSIZE3_SHIFT; | |
2048 | case 2: | |
2049 | psrctl |= PAGE_SIZE << | |
2050 | E1000_PSRCTL_BSIZE2_SHIFT; | |
2051 | case 1: | |
2052 | psrctl |= PAGE_SIZE >> | |
2053 | E1000_PSRCTL_BSIZE1_SHIFT; | |
2054 | break; | |
2055 | } | |
2d7edb92 MC |
2056 | |
2057 | E1000_WRITE_REG(&adapter->hw, PSRCTL, psrctl); | |
1da177e4 LT |
2058 | } |
2059 | ||
2060 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2061 | } | |
2062 | ||
2063 | /** | |
2064 | * e1000_configure_rx - Configure 8254x Receive Unit after Reset | |
2065 | * @adapter: board private structure | |
2066 | * | |
2067 | * Configure the Rx unit of the MAC after a reset. | |
2068 | **/ | |
2069 | ||
2070 | static void | |
2071 | e1000_configure_rx(struct e1000_adapter *adapter) | |
2072 | { | |
581d708e MC |
2073 | uint64_t rdba; |
2074 | struct e1000_hw *hw = &adapter->hw; | |
2075 | uint32_t rdlen, rctl, rxcsum, ctrl_ext; | |
2d7edb92 | 2076 | |
e4c811c9 | 2077 | if (adapter->rx_ps_pages) { |
0f15a8fa | 2078 | /* this is a 32 byte descriptor */ |
581d708e | 2079 | rdlen = adapter->rx_ring[0].count * |
2d7edb92 MC |
2080 | sizeof(union e1000_rx_desc_packet_split); |
2081 | adapter->clean_rx = e1000_clean_rx_irq_ps; | |
2082 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; | |
2083 | } else { | |
581d708e MC |
2084 | rdlen = adapter->rx_ring[0].count * |
2085 | sizeof(struct e1000_rx_desc); | |
2d7edb92 MC |
2086 | adapter->clean_rx = e1000_clean_rx_irq; |
2087 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers; | |
2088 | } | |
1da177e4 LT |
2089 | |
2090 | /* disable receives while setting up the descriptors */ | |
581d708e MC |
2091 | rctl = E1000_READ_REG(hw, RCTL); |
2092 | E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); | |
1da177e4 LT |
2093 | |
2094 | /* set the Receive Delay Timer Register */ | |
581d708e | 2095 | E1000_WRITE_REG(hw, RDTR, adapter->rx_int_delay); |
1da177e4 | 2096 | |
581d708e MC |
2097 | if (hw->mac_type >= e1000_82540) { |
2098 | E1000_WRITE_REG(hw, RADV, adapter->rx_abs_int_delay); | |
835bb129 | 2099 | if (adapter->itr_setting != 0) |
581d708e | 2100 | E1000_WRITE_REG(hw, ITR, |
1da177e4 LT |
2101 | 1000000000 / (adapter->itr * 256)); |
2102 | } | |
2103 | ||
2ae76d98 | 2104 | if (hw->mac_type >= e1000_82571) { |
2ae76d98 | 2105 | ctrl_ext = E1000_READ_REG(hw, CTRL_EXT); |
1e613fd9 | 2106 | /* Reset delay timers after every interrupt */ |
6fc7a7ec | 2107 | ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR; |
1e613fd9 | 2108 | #ifdef CONFIG_E1000_NAPI |
835bb129 | 2109 | /* Auto-Mask interrupts upon ICR access */ |
1e613fd9 | 2110 | ctrl_ext |= E1000_CTRL_EXT_IAME; |
835bb129 | 2111 | E1000_WRITE_REG(hw, IAM, 0xffffffff); |
1e613fd9 | 2112 | #endif |
2ae76d98 MC |
2113 | E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); |
2114 | E1000_WRITE_FLUSH(hw); | |
2115 | } | |
2116 | ||
581d708e MC |
2117 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
2118 | * the Base and Length of the Rx Descriptor Ring */ | |
f56799ea | 2119 | switch (adapter->num_rx_queues) { |
24025e4e MC |
2120 | case 1: |
2121 | default: | |
581d708e | 2122 | rdba = adapter->rx_ring[0].dma; |
581d708e | 2123 | E1000_WRITE_REG(hw, RDLEN, rdlen); |
4ca213a6 AK |
2124 | E1000_WRITE_REG(hw, RDBAH, (rdba >> 32)); |
2125 | E1000_WRITE_REG(hw, RDBAL, (rdba & 0x00000000ffffffffULL)); | |
581d708e | 2126 | E1000_WRITE_REG(hw, RDT, 0); |
4ca213a6 | 2127 | E1000_WRITE_REG(hw, RDH, 0); |
6a951698 AK |
2128 | adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH); |
2129 | adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT); | |
581d708e | 2130 | break; |
24025e4e MC |
2131 | } |
2132 | ||
1da177e4 | 2133 | /* Enable 82543 Receive Checksum Offload for TCP and UDP */ |
581d708e MC |
2134 | if (hw->mac_type >= e1000_82543) { |
2135 | rxcsum = E1000_READ_REG(hw, RXCSUM); | |
c3033b01 | 2136 | if (adapter->rx_csum) { |
2d7edb92 MC |
2137 | rxcsum |= E1000_RXCSUM_TUOFL; |
2138 | ||
868d5309 | 2139 | /* Enable 82571 IPv4 payload checksum for UDP fragments |
2d7edb92 | 2140 | * Must be used in conjunction with packet-split. */ |
96838a40 JB |
2141 | if ((hw->mac_type >= e1000_82571) && |
2142 | (adapter->rx_ps_pages)) { | |
2d7edb92 MC |
2143 | rxcsum |= E1000_RXCSUM_IPPCSE; |
2144 | } | |
2145 | } else { | |
2146 | rxcsum &= ~E1000_RXCSUM_TUOFL; | |
2147 | /* don't need to clear IPPCSE as it defaults to 0 */ | |
2148 | } | |
581d708e | 2149 | E1000_WRITE_REG(hw, RXCSUM, rxcsum); |
1da177e4 LT |
2150 | } |
2151 | ||
21c4d5e0 AK |
2152 | /* enable early receives on 82573, only takes effect if using > 2048 |
2153 | * byte total frame size. for example only for jumbo frames */ | |
2154 | #define E1000_ERT_2048 0x100 | |
2155 | if (hw->mac_type == e1000_82573) | |
2156 | E1000_WRITE_REG(hw, ERT, E1000_ERT_2048); | |
2157 | ||
1da177e4 | 2158 | /* Enable Receives */ |
581d708e | 2159 | E1000_WRITE_REG(hw, RCTL, rctl); |
1da177e4 LT |
2160 | } |
2161 | ||
2162 | /** | |
581d708e | 2163 | * e1000_free_tx_resources - Free Tx Resources per Queue |
1da177e4 | 2164 | * @adapter: board private structure |
581d708e | 2165 | * @tx_ring: Tx descriptor ring for a specific queue |
1da177e4 LT |
2166 | * |
2167 | * Free all transmit software resources | |
2168 | **/ | |
2169 | ||
3ad2cc67 | 2170 | static void |
581d708e MC |
2171 | e1000_free_tx_resources(struct e1000_adapter *adapter, |
2172 | struct e1000_tx_ring *tx_ring) | |
1da177e4 LT |
2173 | { |
2174 | struct pci_dev *pdev = adapter->pdev; | |
2175 | ||
581d708e | 2176 | e1000_clean_tx_ring(adapter, tx_ring); |
1da177e4 | 2177 | |
581d708e MC |
2178 | vfree(tx_ring->buffer_info); |
2179 | tx_ring->buffer_info = NULL; | |
1da177e4 | 2180 | |
581d708e | 2181 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); |
1da177e4 | 2182 | |
581d708e MC |
2183 | tx_ring->desc = NULL; |
2184 | } | |
2185 | ||
2186 | /** | |
2187 | * e1000_free_all_tx_resources - Free Tx Resources for All Queues | |
2188 | * @adapter: board private structure | |
2189 | * | |
2190 | * Free all transmit software resources | |
2191 | **/ | |
2192 | ||
2193 | void | |
2194 | e1000_free_all_tx_resources(struct e1000_adapter *adapter) | |
2195 | { | |
2196 | int i; | |
2197 | ||
f56799ea | 2198 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 2199 | e1000_free_tx_resources(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
2200 | } |
2201 | ||
e619d523 | 2202 | static void |
1da177e4 LT |
2203 | e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, |
2204 | struct e1000_buffer *buffer_info) | |
2205 | { | |
96838a40 | 2206 | if (buffer_info->dma) { |
2648345f MC |
2207 | pci_unmap_page(adapter->pdev, |
2208 | buffer_info->dma, | |
2209 | buffer_info->length, | |
2210 | PCI_DMA_TODEVICE); | |
a9ebadd6 | 2211 | buffer_info->dma = 0; |
1da177e4 | 2212 | } |
a9ebadd6 | 2213 | if (buffer_info->skb) { |
1da177e4 | 2214 | dev_kfree_skb_any(buffer_info->skb); |
a9ebadd6 JB |
2215 | buffer_info->skb = NULL; |
2216 | } | |
2217 | /* buffer_info must be completely set up in the transmit path */ | |
1da177e4 LT |
2218 | } |
2219 | ||
2220 | /** | |
2221 | * e1000_clean_tx_ring - Free Tx Buffers | |
2222 | * @adapter: board private structure | |
581d708e | 2223 | * @tx_ring: ring to be cleaned |
1da177e4 LT |
2224 | **/ |
2225 | ||
2226 | static void | |
581d708e MC |
2227 | e1000_clean_tx_ring(struct e1000_adapter *adapter, |
2228 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 2229 | { |
1da177e4 LT |
2230 | struct e1000_buffer *buffer_info; |
2231 | unsigned long size; | |
2232 | unsigned int i; | |
2233 | ||
2234 | /* Free all the Tx ring sk_buffs */ | |
2235 | ||
96838a40 | 2236 | for (i = 0; i < tx_ring->count; i++) { |
1da177e4 LT |
2237 | buffer_info = &tx_ring->buffer_info[i]; |
2238 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); | |
2239 | } | |
2240 | ||
2241 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
2242 | memset(tx_ring->buffer_info, 0, size); | |
2243 | ||
2244 | /* Zero out the descriptor ring */ | |
2245 | ||
2246 | memset(tx_ring->desc, 0, tx_ring->size); | |
2247 | ||
2248 | tx_ring->next_to_use = 0; | |
2249 | tx_ring->next_to_clean = 0; | |
fd803241 | 2250 | tx_ring->last_tx_tso = 0; |
1da177e4 | 2251 | |
581d708e MC |
2252 | writel(0, adapter->hw.hw_addr + tx_ring->tdh); |
2253 | writel(0, adapter->hw.hw_addr + tx_ring->tdt); | |
2254 | } | |
2255 | ||
2256 | /** | |
2257 | * e1000_clean_all_tx_rings - Free Tx Buffers for all queues | |
2258 | * @adapter: board private structure | |
2259 | **/ | |
2260 | ||
2261 | static void | |
2262 | e1000_clean_all_tx_rings(struct e1000_adapter *adapter) | |
2263 | { | |
2264 | int i; | |
2265 | ||
f56799ea | 2266 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 2267 | e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
2268 | } |
2269 | ||
2270 | /** | |
2271 | * e1000_free_rx_resources - Free Rx Resources | |
2272 | * @adapter: board private structure | |
581d708e | 2273 | * @rx_ring: ring to clean the resources from |
1da177e4 LT |
2274 | * |
2275 | * Free all receive software resources | |
2276 | **/ | |
2277 | ||
3ad2cc67 | 2278 | static void |
581d708e MC |
2279 | e1000_free_rx_resources(struct e1000_adapter *adapter, |
2280 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 2281 | { |
1da177e4 LT |
2282 | struct pci_dev *pdev = adapter->pdev; |
2283 | ||
581d708e | 2284 | e1000_clean_rx_ring(adapter, rx_ring); |
1da177e4 LT |
2285 | |
2286 | vfree(rx_ring->buffer_info); | |
2287 | rx_ring->buffer_info = NULL; | |
2d7edb92 MC |
2288 | kfree(rx_ring->ps_page); |
2289 | rx_ring->ps_page = NULL; | |
2290 | kfree(rx_ring->ps_page_dma); | |
2291 | rx_ring->ps_page_dma = NULL; | |
1da177e4 LT |
2292 | |
2293 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
2294 | ||
2295 | rx_ring->desc = NULL; | |
2296 | } | |
2297 | ||
2298 | /** | |
581d708e | 2299 | * e1000_free_all_rx_resources - Free Rx Resources for All Queues |
1da177e4 | 2300 | * @adapter: board private structure |
581d708e MC |
2301 | * |
2302 | * Free all receive software resources | |
2303 | **/ | |
2304 | ||
2305 | void | |
2306 | e1000_free_all_rx_resources(struct e1000_adapter *adapter) | |
2307 | { | |
2308 | int i; | |
2309 | ||
f56799ea | 2310 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e MC |
2311 | e1000_free_rx_resources(adapter, &adapter->rx_ring[i]); |
2312 | } | |
2313 | ||
2314 | /** | |
2315 | * e1000_clean_rx_ring - Free Rx Buffers per Queue | |
2316 | * @adapter: board private structure | |
2317 | * @rx_ring: ring to free buffers from | |
1da177e4 LT |
2318 | **/ |
2319 | ||
2320 | static void | |
581d708e MC |
2321 | e1000_clean_rx_ring(struct e1000_adapter *adapter, |
2322 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 2323 | { |
1da177e4 | 2324 | struct e1000_buffer *buffer_info; |
2d7edb92 MC |
2325 | struct e1000_ps_page *ps_page; |
2326 | struct e1000_ps_page_dma *ps_page_dma; | |
1da177e4 LT |
2327 | struct pci_dev *pdev = adapter->pdev; |
2328 | unsigned long size; | |
2d7edb92 | 2329 | unsigned int i, j; |
1da177e4 LT |
2330 | |
2331 | /* Free all the Rx ring sk_buffs */ | |
96838a40 | 2332 | for (i = 0; i < rx_ring->count; i++) { |
1da177e4 | 2333 | buffer_info = &rx_ring->buffer_info[i]; |
96838a40 | 2334 | if (buffer_info->skb) { |
1da177e4 LT |
2335 | pci_unmap_single(pdev, |
2336 | buffer_info->dma, | |
2337 | buffer_info->length, | |
2338 | PCI_DMA_FROMDEVICE); | |
2339 | ||
2340 | dev_kfree_skb(buffer_info->skb); | |
2341 | buffer_info->skb = NULL; | |
997f5cbd JK |
2342 | } |
2343 | ps_page = &rx_ring->ps_page[i]; | |
2344 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
2345 | for (j = 0; j < adapter->rx_ps_pages; j++) { | |
2346 | if (!ps_page->ps_page[j]) break; | |
2347 | pci_unmap_page(pdev, | |
2348 | ps_page_dma->ps_page_dma[j], | |
2349 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
2350 | ps_page_dma->ps_page_dma[j] = 0; | |
2351 | put_page(ps_page->ps_page[j]); | |
2352 | ps_page->ps_page[j] = NULL; | |
1da177e4 LT |
2353 | } |
2354 | } | |
2355 | ||
2356 | size = sizeof(struct e1000_buffer) * rx_ring->count; | |
2357 | memset(rx_ring->buffer_info, 0, size); | |
2d7edb92 MC |
2358 | size = sizeof(struct e1000_ps_page) * rx_ring->count; |
2359 | memset(rx_ring->ps_page, 0, size); | |
2360 | size = sizeof(struct e1000_ps_page_dma) * rx_ring->count; | |
2361 | memset(rx_ring->ps_page_dma, 0, size); | |
1da177e4 LT |
2362 | |
2363 | /* Zero out the descriptor ring */ | |
2364 | ||
2365 | memset(rx_ring->desc, 0, rx_ring->size); | |
2366 | ||
2367 | rx_ring->next_to_clean = 0; | |
2368 | rx_ring->next_to_use = 0; | |
2369 | ||
581d708e MC |
2370 | writel(0, adapter->hw.hw_addr + rx_ring->rdh); |
2371 | writel(0, adapter->hw.hw_addr + rx_ring->rdt); | |
2372 | } | |
2373 | ||
2374 | /** | |
2375 | * e1000_clean_all_rx_rings - Free Rx Buffers for all queues | |
2376 | * @adapter: board private structure | |
2377 | **/ | |
2378 | ||
2379 | static void | |
2380 | e1000_clean_all_rx_rings(struct e1000_adapter *adapter) | |
2381 | { | |
2382 | int i; | |
2383 | ||
f56799ea | 2384 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e | 2385 | e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]); |
1da177e4 LT |
2386 | } |
2387 | ||
2388 | /* The 82542 2.0 (revision 2) needs to have the receive unit in reset | |
2389 | * and memory write and invalidate disabled for certain operations | |
2390 | */ | |
2391 | static void | |
2392 | e1000_enter_82542_rst(struct e1000_adapter *adapter) | |
2393 | { | |
2394 | struct net_device *netdev = adapter->netdev; | |
2395 | uint32_t rctl; | |
2396 | ||
2397 | e1000_pci_clear_mwi(&adapter->hw); | |
2398 | ||
2399 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
2400 | rctl |= E1000_RCTL_RST; | |
2401 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2402 | E1000_WRITE_FLUSH(&adapter->hw); | |
2403 | mdelay(5); | |
2404 | ||
96838a40 | 2405 | if (netif_running(netdev)) |
581d708e | 2406 | e1000_clean_all_rx_rings(adapter); |
1da177e4 LT |
2407 | } |
2408 | ||
2409 | static void | |
2410 | e1000_leave_82542_rst(struct e1000_adapter *adapter) | |
2411 | { | |
2412 | struct net_device *netdev = adapter->netdev; | |
2413 | uint32_t rctl; | |
2414 | ||
2415 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
2416 | rctl &= ~E1000_RCTL_RST; | |
2417 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2418 | E1000_WRITE_FLUSH(&adapter->hw); | |
2419 | mdelay(5); | |
2420 | ||
96838a40 | 2421 | if (adapter->hw.pci_cmd_word & PCI_COMMAND_INVALIDATE) |
1da177e4 LT |
2422 | e1000_pci_set_mwi(&adapter->hw); |
2423 | ||
96838a40 | 2424 | if (netif_running(netdev)) { |
72d64a43 JK |
2425 | /* No need to loop, because 82542 supports only 1 queue */ |
2426 | struct e1000_rx_ring *ring = &adapter->rx_ring[0]; | |
7c4d3367 | 2427 | e1000_configure_rx(adapter); |
72d64a43 | 2428 | adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring)); |
1da177e4 LT |
2429 | } |
2430 | } | |
2431 | ||
2432 | /** | |
2433 | * e1000_set_mac - Change the Ethernet Address of the NIC | |
2434 | * @netdev: network interface device structure | |
2435 | * @p: pointer to an address structure | |
2436 | * | |
2437 | * Returns 0 on success, negative on failure | |
2438 | **/ | |
2439 | ||
2440 | static int | |
2441 | e1000_set_mac(struct net_device *netdev, void *p) | |
2442 | { | |
60490fe0 | 2443 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2444 | struct sockaddr *addr = p; |
2445 | ||
96838a40 | 2446 | if (!is_valid_ether_addr(addr->sa_data)) |
1da177e4 LT |
2447 | return -EADDRNOTAVAIL; |
2448 | ||
2449 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2450 | ||
96838a40 | 2451 | if (adapter->hw.mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2452 | e1000_enter_82542_rst(adapter); |
2453 | ||
2454 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
2455 | memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); | |
2456 | ||
2457 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0); | |
2458 | ||
868d5309 MC |
2459 | /* With 82571 controllers, LAA may be overwritten (with the default) |
2460 | * due to controller reset from the other port. */ | |
2461 | if (adapter->hw.mac_type == e1000_82571) { | |
2462 | /* activate the work around */ | |
2463 | adapter->hw.laa_is_present = 1; | |
2464 | ||
96838a40 JB |
2465 | /* Hold a copy of the LAA in RAR[14] This is done so that |
2466 | * between the time RAR[0] gets clobbered and the time it | |
2467 | * gets fixed (in e1000_watchdog), the actual LAA is in one | |
868d5309 | 2468 | * of the RARs and no incoming packets directed to this port |
96838a40 | 2469 | * are dropped. Eventaully the LAA will be in RAR[0] and |
868d5309 | 2470 | * RAR[14] */ |
96838a40 | 2471 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, |
868d5309 MC |
2472 | E1000_RAR_ENTRIES - 1); |
2473 | } | |
2474 | ||
96838a40 | 2475 | if (adapter->hw.mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2476 | e1000_leave_82542_rst(adapter); |
2477 | ||
2478 | return 0; | |
2479 | } | |
2480 | ||
2481 | /** | |
db0ce50d | 2482 | * e1000_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set |
1da177e4 LT |
2483 | * @netdev: network interface device structure |
2484 | * | |
db0ce50d PM |
2485 | * The set_rx_mode entry point is called whenever the unicast or multicast |
2486 | * address lists or the network interface flags are updated. This routine is | |
2487 | * responsible for configuring the hardware for proper unicast, multicast, | |
1da177e4 LT |
2488 | * promiscuous mode, and all-multi behavior. |
2489 | **/ | |
2490 | ||
2491 | static void | |
db0ce50d | 2492 | e1000_set_rx_mode(struct net_device *netdev) |
1da177e4 | 2493 | { |
60490fe0 | 2494 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 2495 | struct e1000_hw *hw = &adapter->hw; |
db0ce50d PM |
2496 | struct dev_addr_list *uc_ptr; |
2497 | struct dev_addr_list *mc_ptr; | |
1da177e4 LT |
2498 | uint32_t rctl; |
2499 | uint32_t hash_value; | |
868d5309 | 2500 | int i, rar_entries = E1000_RAR_ENTRIES; |
cd94dd0b AK |
2501 | int mta_reg_count = (hw->mac_type == e1000_ich8lan) ? |
2502 | E1000_NUM_MTA_REGISTERS_ICH8LAN : | |
2503 | E1000_NUM_MTA_REGISTERS; | |
2504 | ||
2505 | if (adapter->hw.mac_type == e1000_ich8lan) | |
2506 | rar_entries = E1000_RAR_ENTRIES_ICH8LAN; | |
1da177e4 | 2507 | |
868d5309 MC |
2508 | /* reserve RAR[14] for LAA over-write work-around */ |
2509 | if (adapter->hw.mac_type == e1000_82571) | |
2510 | rar_entries--; | |
1da177e4 | 2511 | |
2648345f MC |
2512 | /* Check for Promiscuous and All Multicast modes */ |
2513 | ||
1da177e4 LT |
2514 | rctl = E1000_READ_REG(hw, RCTL); |
2515 | ||
96838a40 | 2516 | if (netdev->flags & IFF_PROMISC) { |
1da177e4 | 2517 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
96838a40 | 2518 | } else if (netdev->flags & IFF_ALLMULTI) { |
1da177e4 | 2519 | rctl |= E1000_RCTL_MPE; |
1da177e4 | 2520 | } else { |
db0ce50d PM |
2521 | rctl &= ~E1000_RCTL_MPE; |
2522 | } | |
2523 | ||
2524 | uc_ptr = NULL; | |
2525 | if (netdev->uc_count > rar_entries - 1) { | |
2526 | rctl |= E1000_RCTL_UPE; | |
2527 | } else if (!(netdev->flags & IFF_PROMISC)) { | |
2528 | rctl &= ~E1000_RCTL_UPE; | |
2529 | uc_ptr = netdev->uc_list; | |
1da177e4 LT |
2530 | } |
2531 | ||
2532 | E1000_WRITE_REG(hw, RCTL, rctl); | |
2533 | ||
2534 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2535 | ||
96838a40 | 2536 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2537 | e1000_enter_82542_rst(adapter); |
2538 | ||
db0ce50d PM |
2539 | /* load the first 14 addresses into the exact filters 1-14. Unicast |
2540 | * addresses take precedence to avoid disabling unicast filtering | |
2541 | * when possible. | |
2542 | * | |
1da177e4 LT |
2543 | * RAR 0 is used for the station MAC adddress |
2544 | * if there are not 14 addresses, go ahead and clear the filters | |
868d5309 | 2545 | * -- with 82571 controllers only 0-13 entries are filled here |
1da177e4 LT |
2546 | */ |
2547 | mc_ptr = netdev->mc_list; | |
2548 | ||
96838a40 | 2549 | for (i = 1; i < rar_entries; i++) { |
db0ce50d PM |
2550 | if (uc_ptr) { |
2551 | e1000_rar_set(hw, uc_ptr->da_addr, i); | |
2552 | uc_ptr = uc_ptr->next; | |
2553 | } else if (mc_ptr) { | |
2554 | e1000_rar_set(hw, mc_ptr->da_addr, i); | |
1da177e4 LT |
2555 | mc_ptr = mc_ptr->next; |
2556 | } else { | |
2557 | E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); | |
4ca213a6 | 2558 | E1000_WRITE_FLUSH(hw); |
1da177e4 | 2559 | E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); |
4ca213a6 | 2560 | E1000_WRITE_FLUSH(hw); |
1da177e4 LT |
2561 | } |
2562 | } | |
db0ce50d | 2563 | WARN_ON(uc_ptr != NULL); |
1da177e4 LT |
2564 | |
2565 | /* clear the old settings from the multicast hash table */ | |
2566 | ||
cd94dd0b | 2567 | for (i = 0; i < mta_reg_count; i++) { |
1da177e4 | 2568 | E1000_WRITE_REG_ARRAY(hw, MTA, i, 0); |
4ca213a6 AK |
2569 | E1000_WRITE_FLUSH(hw); |
2570 | } | |
1da177e4 LT |
2571 | |
2572 | /* load any remaining addresses into the hash table */ | |
2573 | ||
96838a40 | 2574 | for (; mc_ptr; mc_ptr = mc_ptr->next) { |
db0ce50d | 2575 | hash_value = e1000_hash_mc_addr(hw, mc_ptr->da_addr); |
1da177e4 LT |
2576 | e1000_mta_set(hw, hash_value); |
2577 | } | |
2578 | ||
96838a40 | 2579 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 | 2580 | e1000_leave_82542_rst(adapter); |
1da177e4 LT |
2581 | } |
2582 | ||
2583 | /* Need to wait a few seconds after link up to get diagnostic information from | |
2584 | * the phy */ | |
2585 | ||
2586 | static void | |
2587 | e1000_update_phy_info(unsigned long data) | |
2588 | { | |
2589 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
2590 | e1000_phy_get_info(&adapter->hw, &adapter->phy_info); | |
2591 | } | |
2592 | ||
2593 | /** | |
2594 | * e1000_82547_tx_fifo_stall - Timer Call-back | |
2595 | * @data: pointer to adapter cast into an unsigned long | |
2596 | **/ | |
2597 | ||
2598 | static void | |
2599 | e1000_82547_tx_fifo_stall(unsigned long data) | |
2600 | { | |
2601 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
2602 | struct net_device *netdev = adapter->netdev; | |
2603 | uint32_t tctl; | |
2604 | ||
96838a40 JB |
2605 | if (atomic_read(&adapter->tx_fifo_stall)) { |
2606 | if ((E1000_READ_REG(&adapter->hw, TDT) == | |
1da177e4 LT |
2607 | E1000_READ_REG(&adapter->hw, TDH)) && |
2608 | (E1000_READ_REG(&adapter->hw, TDFT) == | |
2609 | E1000_READ_REG(&adapter->hw, TDFH)) && | |
2610 | (E1000_READ_REG(&adapter->hw, TDFTS) == | |
2611 | E1000_READ_REG(&adapter->hw, TDFHS))) { | |
2612 | tctl = E1000_READ_REG(&adapter->hw, TCTL); | |
2613 | E1000_WRITE_REG(&adapter->hw, TCTL, | |
2614 | tctl & ~E1000_TCTL_EN); | |
2615 | E1000_WRITE_REG(&adapter->hw, TDFT, | |
2616 | adapter->tx_head_addr); | |
2617 | E1000_WRITE_REG(&adapter->hw, TDFH, | |
2618 | adapter->tx_head_addr); | |
2619 | E1000_WRITE_REG(&adapter->hw, TDFTS, | |
2620 | adapter->tx_head_addr); | |
2621 | E1000_WRITE_REG(&adapter->hw, TDFHS, | |
2622 | adapter->tx_head_addr); | |
2623 | E1000_WRITE_REG(&adapter->hw, TCTL, tctl); | |
2624 | E1000_WRITE_FLUSH(&adapter->hw); | |
2625 | ||
2626 | adapter->tx_fifo_head = 0; | |
2627 | atomic_set(&adapter->tx_fifo_stall, 0); | |
2628 | netif_wake_queue(netdev); | |
2629 | } else { | |
2630 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); | |
2631 | } | |
2632 | } | |
2633 | } | |
2634 | ||
2635 | /** | |
2636 | * e1000_watchdog - Timer Call-back | |
2637 | * @data: pointer to adapter cast into an unsigned long | |
2638 | **/ | |
2639 | static void | |
2640 | e1000_watchdog(unsigned long data) | |
2641 | { | |
2642 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
1da177e4 | 2643 | struct net_device *netdev = adapter->netdev; |
545c67c0 | 2644 | struct e1000_tx_ring *txdr = adapter->tx_ring; |
7e6c9861 | 2645 | uint32_t link, tctl; |
cd94dd0b AK |
2646 | int32_t ret_val; |
2647 | ||
2648 | ret_val = e1000_check_for_link(&adapter->hw); | |
2649 | if ((ret_val == E1000_ERR_PHY) && | |
2650 | (adapter->hw.phy_type == e1000_phy_igp_3) && | |
2651 | (E1000_READ_REG(&adapter->hw, CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) { | |
2652 | /* See e1000_kumeran_lock_loss_workaround() */ | |
2653 | DPRINTK(LINK, INFO, | |
2654 | "Gigabit has been disabled, downgrading speed\n"); | |
2655 | } | |
90fb5135 | 2656 | |
2d7edb92 MC |
2657 | if (adapter->hw.mac_type == e1000_82573) { |
2658 | e1000_enable_tx_pkt_filtering(&adapter->hw); | |
96838a40 | 2659 | if (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id) |
2d7edb92 | 2660 | e1000_update_mng_vlan(adapter); |
96838a40 | 2661 | } |
1da177e4 | 2662 | |
96838a40 | 2663 | if ((adapter->hw.media_type == e1000_media_type_internal_serdes) && |
1da177e4 LT |
2664 | !(E1000_READ_REG(&adapter->hw, TXCW) & E1000_TXCW_ANE)) |
2665 | link = !adapter->hw.serdes_link_down; | |
2666 | else | |
2667 | link = E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU; | |
2668 | ||
96838a40 JB |
2669 | if (link) { |
2670 | if (!netif_carrier_ok(netdev)) { | |
9669f53b | 2671 | uint32_t ctrl; |
c3033b01 | 2672 | bool txb2b = true; |
1da177e4 LT |
2673 | e1000_get_speed_and_duplex(&adapter->hw, |
2674 | &adapter->link_speed, | |
2675 | &adapter->link_duplex); | |
2676 | ||
9669f53b AK |
2677 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); |
2678 | DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s, " | |
2679 | "Flow Control: %s\n", | |
2680 | adapter->link_speed, | |
2681 | adapter->link_duplex == FULL_DUPLEX ? | |
2682 | "Full Duplex" : "Half Duplex", | |
2683 | ((ctrl & E1000_CTRL_TFCE) && (ctrl & | |
2684 | E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl & | |
2685 | E1000_CTRL_RFCE) ? "RX" : ((ctrl & | |
2686 | E1000_CTRL_TFCE) ? "TX" : "None" ))); | |
1da177e4 | 2687 | |
7e6c9861 JK |
2688 | /* tweak tx_queue_len according to speed/duplex |
2689 | * and adjust the timeout factor */ | |
66a2b0a3 JK |
2690 | netdev->tx_queue_len = adapter->tx_queue_len; |
2691 | adapter->tx_timeout_factor = 1; | |
7e6c9861 JK |
2692 | switch (adapter->link_speed) { |
2693 | case SPEED_10: | |
c3033b01 | 2694 | txb2b = false; |
7e6c9861 JK |
2695 | netdev->tx_queue_len = 10; |
2696 | adapter->tx_timeout_factor = 8; | |
2697 | break; | |
2698 | case SPEED_100: | |
c3033b01 | 2699 | txb2b = false; |
7e6c9861 JK |
2700 | netdev->tx_queue_len = 100; |
2701 | /* maybe add some timeout factor ? */ | |
2702 | break; | |
2703 | } | |
2704 | ||
fe7fe28e | 2705 | if ((adapter->hw.mac_type == e1000_82571 || |
7e6c9861 | 2706 | adapter->hw.mac_type == e1000_82572) && |
c3033b01 | 2707 | !txb2b) { |
7e6c9861 JK |
2708 | uint32_t tarc0; |
2709 | tarc0 = E1000_READ_REG(&adapter->hw, TARC0); | |
90fb5135 | 2710 | tarc0 &= ~(1 << 21); |
7e6c9861 JK |
2711 | E1000_WRITE_REG(&adapter->hw, TARC0, tarc0); |
2712 | } | |
90fb5135 | 2713 | |
7e6c9861 JK |
2714 | /* disable TSO for pcie and 10/100 speeds, to avoid |
2715 | * some hardware issues */ | |
2716 | if (!adapter->tso_force && | |
2717 | adapter->hw.bus_type == e1000_bus_type_pci_express){ | |
66a2b0a3 JK |
2718 | switch (adapter->link_speed) { |
2719 | case SPEED_10: | |
66a2b0a3 | 2720 | case SPEED_100: |
7e6c9861 JK |
2721 | DPRINTK(PROBE,INFO, |
2722 | "10/100 speed: disabling TSO\n"); | |
2723 | netdev->features &= ~NETIF_F_TSO; | |
87ca4e5b | 2724 | netdev->features &= ~NETIF_F_TSO6; |
7e6c9861 JK |
2725 | break; |
2726 | case SPEED_1000: | |
2727 | netdev->features |= NETIF_F_TSO; | |
87ca4e5b | 2728 | netdev->features |= NETIF_F_TSO6; |
7e6c9861 JK |
2729 | break; |
2730 | default: | |
2731 | /* oops */ | |
66a2b0a3 JK |
2732 | break; |
2733 | } | |
2734 | } | |
7e6c9861 JK |
2735 | |
2736 | /* enable transmits in the hardware, need to do this | |
2737 | * after setting TARC0 */ | |
2738 | tctl = E1000_READ_REG(&adapter->hw, TCTL); | |
2739 | tctl |= E1000_TCTL_EN; | |
2740 | E1000_WRITE_REG(&adapter->hw, TCTL, tctl); | |
66a2b0a3 | 2741 | |
1da177e4 LT |
2742 | netif_carrier_on(netdev); |
2743 | netif_wake_queue(netdev); | |
56e1393f | 2744 | mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ)); |
1da177e4 | 2745 | adapter->smartspeed = 0; |
bb8e3311 JG |
2746 | } else { |
2747 | /* make sure the receive unit is started */ | |
2748 | if (adapter->hw.rx_needs_kicking) { | |
2749 | struct e1000_hw *hw = &adapter->hw; | |
2750 | uint32_t rctl = E1000_READ_REG(hw, RCTL); | |
2751 | E1000_WRITE_REG(hw, RCTL, rctl | E1000_RCTL_EN); | |
2752 | } | |
1da177e4 LT |
2753 | } |
2754 | } else { | |
96838a40 | 2755 | if (netif_carrier_ok(netdev)) { |
1da177e4 LT |
2756 | adapter->link_speed = 0; |
2757 | adapter->link_duplex = 0; | |
2758 | DPRINTK(LINK, INFO, "NIC Link is Down\n"); | |
2759 | netif_carrier_off(netdev); | |
2760 | netif_stop_queue(netdev); | |
56e1393f | 2761 | mod_timer(&adapter->phy_info_timer, round_jiffies(jiffies + 2 * HZ)); |
87041639 JK |
2762 | |
2763 | /* 80003ES2LAN workaround-- | |
2764 | * For packet buffer work-around on link down event; | |
2765 | * disable receives in the ISR and | |
2766 | * reset device here in the watchdog | |
2767 | */ | |
8fc897b0 | 2768 | if (adapter->hw.mac_type == e1000_80003es2lan) |
87041639 JK |
2769 | /* reset device */ |
2770 | schedule_work(&adapter->reset_task); | |
1da177e4 LT |
2771 | } |
2772 | ||
2773 | e1000_smartspeed(adapter); | |
2774 | } | |
2775 | ||
2776 | e1000_update_stats(adapter); | |
2777 | ||
2778 | adapter->hw.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; | |
2779 | adapter->tpt_old = adapter->stats.tpt; | |
2780 | adapter->hw.collision_delta = adapter->stats.colc - adapter->colc_old; | |
2781 | adapter->colc_old = adapter->stats.colc; | |
2782 | ||
2783 | adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; | |
2784 | adapter->gorcl_old = adapter->stats.gorcl; | |
2785 | adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; | |
2786 | adapter->gotcl_old = adapter->stats.gotcl; | |
2787 | ||
2788 | e1000_update_adaptive(&adapter->hw); | |
2789 | ||
f56799ea | 2790 | if (!netif_carrier_ok(netdev)) { |
581d708e | 2791 | if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { |
1da177e4 LT |
2792 | /* We've lost link, so the controller stops DMA, |
2793 | * but we've got queued Tx work that's never going | |
2794 | * to get done, so reset controller to flush Tx. | |
2795 | * (Do the reset outside of interrupt context). */ | |
87041639 JK |
2796 | adapter->tx_timeout_count++; |
2797 | schedule_work(&adapter->reset_task); | |
1da177e4 LT |
2798 | } |
2799 | } | |
2800 | ||
1da177e4 LT |
2801 | /* Cause software interrupt to ensure rx ring is cleaned */ |
2802 | E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_RXDMT0); | |
2803 | ||
2648345f | 2804 | /* Force detection of hung controller every watchdog period */ |
c3033b01 | 2805 | adapter->detect_tx_hung = true; |
1da177e4 | 2806 | |
96838a40 | 2807 | /* With 82571 controllers, LAA may be overwritten due to controller |
868d5309 MC |
2808 | * reset from the other port. Set the appropriate LAA in RAR[0] */ |
2809 | if (adapter->hw.mac_type == e1000_82571 && adapter->hw.laa_is_present) | |
2810 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0); | |
2811 | ||
1da177e4 | 2812 | /* Reset the timer */ |
56e1393f | 2813 | mod_timer(&adapter->watchdog_timer, round_jiffies(jiffies + 2 * HZ)); |
1da177e4 LT |
2814 | } |
2815 | ||
835bb129 JB |
2816 | enum latency_range { |
2817 | lowest_latency = 0, | |
2818 | low_latency = 1, | |
2819 | bulk_latency = 2, | |
2820 | latency_invalid = 255 | |
2821 | }; | |
2822 | ||
2823 | /** | |
2824 | * e1000_update_itr - update the dynamic ITR value based on statistics | |
2825 | * Stores a new ITR value based on packets and byte | |
2826 | * counts during the last interrupt. The advantage of per interrupt | |
2827 | * computation is faster updates and more accurate ITR for the current | |
2828 | * traffic pattern. Constants in this function were computed | |
2829 | * based on theoretical maximum wire speed and thresholds were set based | |
2830 | * on testing data as well as attempting to minimize response time | |
2831 | * while increasing bulk throughput. | |
2832 | * this functionality is controlled by the InterruptThrottleRate module | |
2833 | * parameter (see e1000_param.c) | |
2834 | * @adapter: pointer to adapter | |
2835 | * @itr_setting: current adapter->itr | |
2836 | * @packets: the number of packets during this measurement interval | |
2837 | * @bytes: the number of bytes during this measurement interval | |
2838 | **/ | |
2839 | static unsigned int e1000_update_itr(struct e1000_adapter *adapter, | |
2840 | uint16_t itr_setting, | |
2841 | int packets, | |
2842 | int bytes) | |
2843 | { | |
2844 | unsigned int retval = itr_setting; | |
2845 | struct e1000_hw *hw = &adapter->hw; | |
2846 | ||
2847 | if (unlikely(hw->mac_type < e1000_82540)) | |
2848 | goto update_itr_done; | |
2849 | ||
2850 | if (packets == 0) | |
2851 | goto update_itr_done; | |
2852 | ||
835bb129 JB |
2853 | switch (itr_setting) { |
2854 | case lowest_latency: | |
2b65326e JB |
2855 | /* jumbo frames get bulk treatment*/ |
2856 | if (bytes/packets > 8000) | |
2857 | retval = bulk_latency; | |
2858 | else if ((packets < 5) && (bytes > 512)) | |
835bb129 JB |
2859 | retval = low_latency; |
2860 | break; | |
2861 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
2862 | if (bytes > 10000) { | |
2b65326e JB |
2863 | /* jumbo frames need bulk latency setting */ |
2864 | if (bytes/packets > 8000) | |
2865 | retval = bulk_latency; | |
2866 | else if ((packets < 10) || ((bytes/packets) > 1200)) | |
835bb129 JB |
2867 | retval = bulk_latency; |
2868 | else if ((packets > 35)) | |
2869 | retval = lowest_latency; | |
2b65326e JB |
2870 | } else if (bytes/packets > 2000) |
2871 | retval = bulk_latency; | |
2872 | else if (packets <= 2 && bytes < 512) | |
835bb129 JB |
2873 | retval = lowest_latency; |
2874 | break; | |
2875 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
2876 | if (bytes > 25000) { | |
2877 | if (packets > 35) | |
2878 | retval = low_latency; | |
2b65326e JB |
2879 | } else if (bytes < 6000) { |
2880 | retval = low_latency; | |
835bb129 JB |
2881 | } |
2882 | break; | |
2883 | } | |
2884 | ||
2885 | update_itr_done: | |
2886 | return retval; | |
2887 | } | |
2888 | ||
2889 | static void e1000_set_itr(struct e1000_adapter *adapter) | |
2890 | { | |
2891 | struct e1000_hw *hw = &adapter->hw; | |
2892 | uint16_t current_itr; | |
2893 | uint32_t new_itr = adapter->itr; | |
2894 | ||
2895 | if (unlikely(hw->mac_type < e1000_82540)) | |
2896 | return; | |
2897 | ||
2898 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ | |
2899 | if (unlikely(adapter->link_speed != SPEED_1000)) { | |
2900 | current_itr = 0; | |
2901 | new_itr = 4000; | |
2902 | goto set_itr_now; | |
2903 | } | |
2904 | ||
2905 | adapter->tx_itr = e1000_update_itr(adapter, | |
2906 | adapter->tx_itr, | |
2907 | adapter->total_tx_packets, | |
2908 | adapter->total_tx_bytes); | |
2b65326e JB |
2909 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
2910 | if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) | |
2911 | adapter->tx_itr = low_latency; | |
2912 | ||
835bb129 JB |
2913 | adapter->rx_itr = e1000_update_itr(adapter, |
2914 | adapter->rx_itr, | |
2915 | adapter->total_rx_packets, | |
2916 | adapter->total_rx_bytes); | |
2b65326e JB |
2917 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
2918 | if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) | |
2919 | adapter->rx_itr = low_latency; | |
835bb129 JB |
2920 | |
2921 | current_itr = max(adapter->rx_itr, adapter->tx_itr); | |
2922 | ||
835bb129 JB |
2923 | switch (current_itr) { |
2924 | /* counts and packets in update_itr are dependent on these numbers */ | |
2925 | case lowest_latency: | |
2926 | new_itr = 70000; | |
2927 | break; | |
2928 | case low_latency: | |
2929 | new_itr = 20000; /* aka hwitr = ~200 */ | |
2930 | break; | |
2931 | case bulk_latency: | |
2932 | new_itr = 4000; | |
2933 | break; | |
2934 | default: | |
2935 | break; | |
2936 | } | |
2937 | ||
2938 | set_itr_now: | |
2939 | if (new_itr != adapter->itr) { | |
2940 | /* this attempts to bias the interrupt rate towards Bulk | |
2941 | * by adding intermediate steps when interrupt rate is | |
2942 | * increasing */ | |
2943 | new_itr = new_itr > adapter->itr ? | |
2944 | min(adapter->itr + (new_itr >> 2), new_itr) : | |
2945 | new_itr; | |
2946 | adapter->itr = new_itr; | |
2947 | E1000_WRITE_REG(hw, ITR, 1000000000 / (new_itr * 256)); | |
2948 | } | |
2949 | ||
2950 | return; | |
2951 | } | |
2952 | ||
1da177e4 LT |
2953 | #define E1000_TX_FLAGS_CSUM 0x00000001 |
2954 | #define E1000_TX_FLAGS_VLAN 0x00000002 | |
2955 | #define E1000_TX_FLAGS_TSO 0x00000004 | |
2d7edb92 | 2956 | #define E1000_TX_FLAGS_IPV4 0x00000008 |
1da177e4 LT |
2957 | #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
2958 | #define E1000_TX_FLAGS_VLAN_SHIFT 16 | |
2959 | ||
e619d523 | 2960 | static int |
581d708e MC |
2961 | e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2962 | struct sk_buff *skb) | |
1da177e4 | 2963 | { |
1da177e4 | 2964 | struct e1000_context_desc *context_desc; |
545c67c0 | 2965 | struct e1000_buffer *buffer_info; |
1da177e4 LT |
2966 | unsigned int i; |
2967 | uint32_t cmd_length = 0; | |
2d7edb92 | 2968 | uint16_t ipcse = 0, tucse, mss; |
1da177e4 LT |
2969 | uint8_t ipcss, ipcso, tucss, tucso, hdr_len; |
2970 | int err; | |
2971 | ||
89114afd | 2972 | if (skb_is_gso(skb)) { |
1da177e4 LT |
2973 | if (skb_header_cloned(skb)) { |
2974 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
2975 | if (err) | |
2976 | return err; | |
2977 | } | |
2978 | ||
ab6a5bb6 | 2979 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
7967168c | 2980 | mss = skb_shinfo(skb)->gso_size; |
60828236 | 2981 | if (skb->protocol == htons(ETH_P_IP)) { |
eddc9ec5 ACM |
2982 | struct iphdr *iph = ip_hdr(skb); |
2983 | iph->tot_len = 0; | |
2984 | iph->check = 0; | |
aa8223c7 ACM |
2985 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
2986 | iph->daddr, 0, | |
2987 | IPPROTO_TCP, | |
2988 | 0); | |
2d7edb92 | 2989 | cmd_length = E1000_TXD_CMD_IP; |
ea2ae17d | 2990 | ipcse = skb_transport_offset(skb) - 1; |
e15fdd03 | 2991 | } else if (skb->protocol == htons(ETH_P_IPV6)) { |
0660e03f | 2992 | ipv6_hdr(skb)->payload_len = 0; |
aa8223c7 | 2993 | tcp_hdr(skb)->check = |
0660e03f ACM |
2994 | ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
2995 | &ipv6_hdr(skb)->daddr, | |
2996 | 0, IPPROTO_TCP, 0); | |
2d7edb92 | 2997 | ipcse = 0; |
2d7edb92 | 2998 | } |
bbe735e4 | 2999 | ipcss = skb_network_offset(skb); |
eddc9ec5 | 3000 | ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; |
ea2ae17d | 3001 | tucss = skb_transport_offset(skb); |
aa8223c7 | 3002 | tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
1da177e4 LT |
3003 | tucse = 0; |
3004 | ||
3005 | cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | | |
2d7edb92 | 3006 | E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
1da177e4 | 3007 | |
581d708e MC |
3008 | i = tx_ring->next_to_use; |
3009 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
545c67c0 | 3010 | buffer_info = &tx_ring->buffer_info[i]; |
1da177e4 LT |
3011 | |
3012 | context_desc->lower_setup.ip_fields.ipcss = ipcss; | |
3013 | context_desc->lower_setup.ip_fields.ipcso = ipcso; | |
3014 | context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); | |
3015 | context_desc->upper_setup.tcp_fields.tucss = tucss; | |
3016 | context_desc->upper_setup.tcp_fields.tucso = tucso; | |
3017 | context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); | |
3018 | context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); | |
3019 | context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; | |
3020 | context_desc->cmd_and_length = cpu_to_le32(cmd_length); | |
3021 | ||
545c67c0 | 3022 | buffer_info->time_stamp = jiffies; |
a9ebadd6 | 3023 | buffer_info->next_to_watch = i; |
545c67c0 | 3024 | |
581d708e MC |
3025 | if (++i == tx_ring->count) i = 0; |
3026 | tx_ring->next_to_use = i; | |
1da177e4 | 3027 | |
c3033b01 | 3028 | return true; |
1da177e4 | 3029 | } |
c3033b01 | 3030 | return false; |
1da177e4 LT |
3031 | } |
3032 | ||
c3033b01 | 3033 | static bool |
581d708e MC |
3034 | e1000_tx_csum(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
3035 | struct sk_buff *skb) | |
1da177e4 LT |
3036 | { |
3037 | struct e1000_context_desc *context_desc; | |
545c67c0 | 3038 | struct e1000_buffer *buffer_info; |
1da177e4 LT |
3039 | unsigned int i; |
3040 | uint8_t css; | |
3041 | ||
84fa7933 | 3042 | if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) { |
ea2ae17d | 3043 | css = skb_transport_offset(skb); |
1da177e4 | 3044 | |
581d708e | 3045 | i = tx_ring->next_to_use; |
545c67c0 | 3046 | buffer_info = &tx_ring->buffer_info[i]; |
581d708e | 3047 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
1da177e4 | 3048 | |
f6c57baf | 3049 | context_desc->lower_setup.ip_config = 0; |
1da177e4 | 3050 | context_desc->upper_setup.tcp_fields.tucss = css; |
628592cc HX |
3051 | context_desc->upper_setup.tcp_fields.tucso = |
3052 | css + skb->csum_offset; | |
1da177e4 LT |
3053 | context_desc->upper_setup.tcp_fields.tucse = 0; |
3054 | context_desc->tcp_seg_setup.data = 0; | |
3055 | context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT); | |
3056 | ||
545c67c0 | 3057 | buffer_info->time_stamp = jiffies; |
a9ebadd6 | 3058 | buffer_info->next_to_watch = i; |
545c67c0 | 3059 | |
581d708e MC |
3060 | if (unlikely(++i == tx_ring->count)) i = 0; |
3061 | tx_ring->next_to_use = i; | |
1da177e4 | 3062 | |
c3033b01 | 3063 | return true; |
1da177e4 LT |
3064 | } |
3065 | ||
c3033b01 | 3066 | return false; |
1da177e4 LT |
3067 | } |
3068 | ||
3069 | #define E1000_MAX_TXD_PWR 12 | |
3070 | #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) | |
3071 | ||
e619d523 | 3072 | static int |
581d708e MC |
3073 | e1000_tx_map(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
3074 | struct sk_buff *skb, unsigned int first, unsigned int max_per_txd, | |
3075 | unsigned int nr_frags, unsigned int mss) | |
1da177e4 | 3076 | { |
1da177e4 LT |
3077 | struct e1000_buffer *buffer_info; |
3078 | unsigned int len = skb->len; | |
3079 | unsigned int offset = 0, size, count = 0, i; | |
3080 | unsigned int f; | |
3081 | len -= skb->data_len; | |
3082 | ||
3083 | i = tx_ring->next_to_use; | |
3084 | ||
96838a40 | 3085 | while (len) { |
1da177e4 LT |
3086 | buffer_info = &tx_ring->buffer_info[i]; |
3087 | size = min(len, max_per_txd); | |
fd803241 JK |
3088 | /* Workaround for Controller erratum -- |
3089 | * descriptor for non-tso packet in a linear SKB that follows a | |
3090 | * tso gets written back prematurely before the data is fully | |
0f15a8fa | 3091 | * DMA'd to the controller */ |
fd803241 | 3092 | if (!skb->data_len && tx_ring->last_tx_tso && |
89114afd | 3093 | !skb_is_gso(skb)) { |
fd803241 JK |
3094 | tx_ring->last_tx_tso = 0; |
3095 | size -= 4; | |
3096 | } | |
3097 | ||
1da177e4 LT |
3098 | /* Workaround for premature desc write-backs |
3099 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 3100 | if (unlikely(mss && !nr_frags && size == len && size > 8)) |
1da177e4 | 3101 | size -= 4; |
97338bde MC |
3102 | /* work-around for errata 10 and it applies |
3103 | * to all controllers in PCI-X mode | |
3104 | * The fix is to make sure that the first descriptor of a | |
3105 | * packet is smaller than 2048 - 16 - 16 (or 2016) bytes | |
3106 | */ | |
96838a40 | 3107 | if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && |
97338bde MC |
3108 | (size > 2015) && count == 0)) |
3109 | size = 2015; | |
96838a40 | 3110 | |
1da177e4 LT |
3111 | /* Workaround for potential 82544 hang in PCI-X. Avoid |
3112 | * terminating buffers within evenly-aligned dwords. */ | |
96838a40 | 3113 | if (unlikely(adapter->pcix_82544 && |
1da177e4 LT |
3114 | !((unsigned long)(skb->data + offset + size - 1) & 4) && |
3115 | size > 4)) | |
3116 | size -= 4; | |
3117 | ||
3118 | buffer_info->length = size; | |
3119 | buffer_info->dma = | |
3120 | pci_map_single(adapter->pdev, | |
3121 | skb->data + offset, | |
3122 | size, | |
3123 | PCI_DMA_TODEVICE); | |
3124 | buffer_info->time_stamp = jiffies; | |
a9ebadd6 | 3125 | buffer_info->next_to_watch = i; |
1da177e4 LT |
3126 | |
3127 | len -= size; | |
3128 | offset += size; | |
3129 | count++; | |
96838a40 | 3130 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
3131 | } |
3132 | ||
96838a40 | 3133 | for (f = 0; f < nr_frags; f++) { |
1da177e4 LT |
3134 | struct skb_frag_struct *frag; |
3135 | ||
3136 | frag = &skb_shinfo(skb)->frags[f]; | |
3137 | len = frag->size; | |
3138 | offset = frag->page_offset; | |
3139 | ||
96838a40 | 3140 | while (len) { |
1da177e4 LT |
3141 | buffer_info = &tx_ring->buffer_info[i]; |
3142 | size = min(len, max_per_txd); | |
1da177e4 LT |
3143 | /* Workaround for premature desc write-backs |
3144 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 3145 | if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) |
1da177e4 | 3146 | size -= 4; |
1da177e4 LT |
3147 | /* Workaround for potential 82544 hang in PCI-X. |
3148 | * Avoid terminating buffers within evenly-aligned | |
3149 | * dwords. */ | |
96838a40 | 3150 | if (unlikely(adapter->pcix_82544 && |
1da177e4 LT |
3151 | !((unsigned long)(frag->page+offset+size-1) & 4) && |
3152 | size > 4)) | |
3153 | size -= 4; | |
3154 | ||
3155 | buffer_info->length = size; | |
3156 | buffer_info->dma = | |
3157 | pci_map_page(adapter->pdev, | |
3158 | frag->page, | |
3159 | offset, | |
3160 | size, | |
3161 | PCI_DMA_TODEVICE); | |
3162 | buffer_info->time_stamp = jiffies; | |
a9ebadd6 | 3163 | buffer_info->next_to_watch = i; |
1da177e4 LT |
3164 | |
3165 | len -= size; | |
3166 | offset += size; | |
3167 | count++; | |
96838a40 | 3168 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
3169 | } |
3170 | } | |
3171 | ||
3172 | i = (i == 0) ? tx_ring->count - 1 : i - 1; | |
3173 | tx_ring->buffer_info[i].skb = skb; | |
3174 | tx_ring->buffer_info[first].next_to_watch = i; | |
3175 | ||
3176 | return count; | |
3177 | } | |
3178 | ||
e619d523 | 3179 | static void |
581d708e MC |
3180 | e1000_tx_queue(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
3181 | int tx_flags, int count) | |
1da177e4 | 3182 | { |
1da177e4 LT |
3183 | struct e1000_tx_desc *tx_desc = NULL; |
3184 | struct e1000_buffer *buffer_info; | |
3185 | uint32_t txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; | |
3186 | unsigned int i; | |
3187 | ||
96838a40 | 3188 | if (likely(tx_flags & E1000_TX_FLAGS_TSO)) { |
1da177e4 LT |
3189 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
3190 | E1000_TXD_CMD_TSE; | |
2d7edb92 MC |
3191 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
3192 | ||
96838a40 | 3193 | if (likely(tx_flags & E1000_TX_FLAGS_IPV4)) |
2d7edb92 | 3194 | txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
1da177e4 LT |
3195 | } |
3196 | ||
96838a40 | 3197 | if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) { |
1da177e4 LT |
3198 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
3199 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
3200 | } | |
3201 | ||
96838a40 | 3202 | if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { |
1da177e4 LT |
3203 | txd_lower |= E1000_TXD_CMD_VLE; |
3204 | txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); | |
3205 | } | |
3206 | ||
3207 | i = tx_ring->next_to_use; | |
3208 | ||
96838a40 | 3209 | while (count--) { |
1da177e4 LT |
3210 | buffer_info = &tx_ring->buffer_info[i]; |
3211 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
3212 | tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
3213 | tx_desc->lower.data = | |
3214 | cpu_to_le32(txd_lower | buffer_info->length); | |
3215 | tx_desc->upper.data = cpu_to_le32(txd_upper); | |
96838a40 | 3216 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
3217 | } |
3218 | ||
3219 | tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); | |
3220 | ||
3221 | /* Force memory writes to complete before letting h/w | |
3222 | * know there are new descriptors to fetch. (Only | |
3223 | * applicable for weak-ordered memory model archs, | |
3224 | * such as IA-64). */ | |
3225 | wmb(); | |
3226 | ||
3227 | tx_ring->next_to_use = i; | |
581d708e | 3228 | writel(i, adapter->hw.hw_addr + tx_ring->tdt); |
2ce9047f JB |
3229 | /* we need this if more than one processor can write to our tail |
3230 | * at a time, it syncronizes IO on IA64/Altix systems */ | |
3231 | mmiowb(); | |
1da177e4 LT |
3232 | } |
3233 | ||
3234 | /** | |
3235 | * 82547 workaround to avoid controller hang in half-duplex environment. | |
3236 | * The workaround is to avoid queuing a large packet that would span | |
3237 | * the internal Tx FIFO ring boundary by notifying the stack to resend | |
3238 | * the packet at a later time. This gives the Tx FIFO an opportunity to | |
3239 | * flush all packets. When that occurs, we reset the Tx FIFO pointers | |
3240 | * to the beginning of the Tx FIFO. | |
3241 | **/ | |
3242 | ||
3243 | #define E1000_FIFO_HDR 0x10 | |
3244 | #define E1000_82547_PAD_LEN 0x3E0 | |
3245 | ||
e619d523 | 3246 | static int |
1da177e4 LT |
3247 | e1000_82547_fifo_workaround(struct e1000_adapter *adapter, struct sk_buff *skb) |
3248 | { | |
3249 | uint32_t fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; | |
3250 | uint32_t skb_fifo_len = skb->len + E1000_FIFO_HDR; | |
3251 | ||
9099cfb9 | 3252 | skb_fifo_len = ALIGN(skb_fifo_len, E1000_FIFO_HDR); |
1da177e4 | 3253 | |
96838a40 | 3254 | if (adapter->link_duplex != HALF_DUPLEX) |
1da177e4 LT |
3255 | goto no_fifo_stall_required; |
3256 | ||
96838a40 | 3257 | if (atomic_read(&adapter->tx_fifo_stall)) |
1da177e4 LT |
3258 | return 1; |
3259 | ||
96838a40 | 3260 | if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { |
1da177e4 LT |
3261 | atomic_set(&adapter->tx_fifo_stall, 1); |
3262 | return 1; | |
3263 | } | |
3264 | ||
3265 | no_fifo_stall_required: | |
3266 | adapter->tx_fifo_head += skb_fifo_len; | |
96838a40 | 3267 | if (adapter->tx_fifo_head >= adapter->tx_fifo_size) |
1da177e4 LT |
3268 | adapter->tx_fifo_head -= adapter->tx_fifo_size; |
3269 | return 0; | |
3270 | } | |
3271 | ||
2d7edb92 | 3272 | #define MINIMUM_DHCP_PACKET_SIZE 282 |
e619d523 | 3273 | static int |
2d7edb92 MC |
3274 | e1000_transfer_dhcp_info(struct e1000_adapter *adapter, struct sk_buff *skb) |
3275 | { | |
3276 | struct e1000_hw *hw = &adapter->hw; | |
3277 | uint16_t length, offset; | |
96838a40 JB |
3278 | if (vlan_tx_tag_present(skb)) { |
3279 | if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) && | |
2d7edb92 MC |
3280 | ( adapter->hw.mng_cookie.status & |
3281 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) ) | |
3282 | return 0; | |
3283 | } | |
20a44028 | 3284 | if (skb->len > MINIMUM_DHCP_PACKET_SIZE) { |
2d7edb92 | 3285 | struct ethhdr *eth = (struct ethhdr *) skb->data; |
96838a40 JB |
3286 | if ((htons(ETH_P_IP) == eth->h_proto)) { |
3287 | const struct iphdr *ip = | |
2d7edb92 | 3288 | (struct iphdr *)((uint8_t *)skb->data+14); |
96838a40 JB |
3289 | if (IPPROTO_UDP == ip->protocol) { |
3290 | struct udphdr *udp = | |
3291 | (struct udphdr *)((uint8_t *)ip + | |
2d7edb92 | 3292 | (ip->ihl << 2)); |
96838a40 | 3293 | if (ntohs(udp->dest) == 67) { |
2d7edb92 MC |
3294 | offset = (uint8_t *)udp + 8 - skb->data; |
3295 | length = skb->len - offset; | |
3296 | ||
3297 | return e1000_mng_write_dhcp_info(hw, | |
96838a40 | 3298 | (uint8_t *)udp + 8, |
2d7edb92 MC |
3299 | length); |
3300 | } | |
3301 | } | |
3302 | } | |
3303 | } | |
3304 | return 0; | |
3305 | } | |
3306 | ||
65c7973f JB |
3307 | static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) |
3308 | { | |
3309 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3310 | struct e1000_tx_ring *tx_ring = adapter->tx_ring; | |
3311 | ||
3312 | netif_stop_queue(netdev); | |
3313 | /* Herbert's original patch had: | |
3314 | * smp_mb__after_netif_stop_queue(); | |
3315 | * but since that doesn't exist yet, just open code it. */ | |
3316 | smp_mb(); | |
3317 | ||
3318 | /* We need to check again in a case another CPU has just | |
3319 | * made room available. */ | |
3320 | if (likely(E1000_DESC_UNUSED(tx_ring) < size)) | |
3321 | return -EBUSY; | |
3322 | ||
3323 | /* A reprieve! */ | |
3324 | netif_start_queue(netdev); | |
fcfb1224 | 3325 | ++adapter->restart_queue; |
65c7973f JB |
3326 | return 0; |
3327 | } | |
3328 | ||
3329 | static int e1000_maybe_stop_tx(struct net_device *netdev, | |
3330 | struct e1000_tx_ring *tx_ring, int size) | |
3331 | { | |
3332 | if (likely(E1000_DESC_UNUSED(tx_ring) >= size)) | |
3333 | return 0; | |
3334 | return __e1000_maybe_stop_tx(netdev, size); | |
3335 | } | |
3336 | ||
1da177e4 LT |
3337 | #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
3338 | static int | |
3339 | e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
3340 | { | |
60490fe0 | 3341 | struct e1000_adapter *adapter = netdev_priv(netdev); |
581d708e | 3342 | struct e1000_tx_ring *tx_ring; |
1da177e4 LT |
3343 | unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; |
3344 | unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; | |
3345 | unsigned int tx_flags = 0; | |
6d1e3aa7 | 3346 | unsigned int len = skb->len - skb->data_len; |
1da177e4 | 3347 | unsigned long flags; |
6d1e3aa7 KK |
3348 | unsigned int nr_frags; |
3349 | unsigned int mss; | |
1da177e4 | 3350 | int count = 0; |
76c224bc | 3351 | int tso; |
1da177e4 | 3352 | unsigned int f; |
1da177e4 | 3353 | |
65c7973f JB |
3354 | /* This goes back to the question of how to logically map a tx queue |
3355 | * to a flow. Right now, performance is impacted slightly negatively | |
3356 | * if using multiple tx queues. If the stack breaks away from a | |
3357 | * single qdisc implementation, we can look at this again. */ | |
581d708e | 3358 | tx_ring = adapter->tx_ring; |
24025e4e | 3359 | |
581d708e | 3360 | if (unlikely(skb->len <= 0)) { |
1da177e4 LT |
3361 | dev_kfree_skb_any(skb); |
3362 | return NETDEV_TX_OK; | |
3363 | } | |
3364 | ||
032fe6e9 JB |
3365 | /* 82571 and newer doesn't need the workaround that limited descriptor |
3366 | * length to 4kB */ | |
3367 | if (adapter->hw.mac_type >= e1000_82571) | |
3368 | max_per_txd = 8192; | |
3369 | ||
7967168c | 3370 | mss = skb_shinfo(skb)->gso_size; |
76c224bc | 3371 | /* The controller does a simple calculation to |
1da177e4 LT |
3372 | * make sure there is enough room in the FIFO before |
3373 | * initiating the DMA for each buffer. The calc is: | |
3374 | * 4 = ceil(buffer len/mss). To make sure we don't | |
3375 | * overrun the FIFO, adjust the max buffer len if mss | |
3376 | * drops. */ | |
96838a40 | 3377 | if (mss) { |
9a3056da | 3378 | uint8_t hdr_len; |
1da177e4 LT |
3379 | max_per_txd = min(mss << 2, max_per_txd); |
3380 | max_txd_pwr = fls(max_per_txd) - 1; | |
9a3056da | 3381 | |
90fb5135 AK |
3382 | /* TSO Workaround for 82571/2/3 Controllers -- if skb->data |
3383 | * points to just header, pull a few bytes of payload from | |
3384 | * frags into skb->data */ | |
ab6a5bb6 | 3385 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
6d1e3aa7 | 3386 | if (skb->data_len && hdr_len == len) { |
9f687888 JK |
3387 | switch (adapter->hw.mac_type) { |
3388 | unsigned int pull_size; | |
683a2aa3 HX |
3389 | case e1000_82544: |
3390 | /* Make sure we have room to chop off 4 bytes, | |
3391 | * and that the end alignment will work out to | |
3392 | * this hardware's requirements | |
3393 | * NOTE: this is a TSO only workaround | |
3394 | * if end byte alignment not correct move us | |
3395 | * into the next dword */ | |
27a884dc | 3396 | if ((unsigned long)(skb_tail_pointer(skb) - 1) & 4) |
683a2aa3 HX |
3397 | break; |
3398 | /* fall through */ | |
9f687888 JK |
3399 | case e1000_82571: |
3400 | case e1000_82572: | |
3401 | case e1000_82573: | |
cd94dd0b | 3402 | case e1000_ich8lan: |
9f687888 JK |
3403 | pull_size = min((unsigned int)4, skb->data_len); |
3404 | if (!__pskb_pull_tail(skb, pull_size)) { | |
a5eafce2 | 3405 | DPRINTK(DRV, ERR, |
9f687888 JK |
3406 | "__pskb_pull_tail failed.\n"); |
3407 | dev_kfree_skb_any(skb); | |
749dfc70 | 3408 | return NETDEV_TX_OK; |
9f687888 JK |
3409 | } |
3410 | len = skb->len - skb->data_len; | |
3411 | break; | |
3412 | default: | |
3413 | /* do nothing */ | |
3414 | break; | |
d74bbd3b | 3415 | } |
9a3056da | 3416 | } |
1da177e4 LT |
3417 | } |
3418 | ||
9a3056da | 3419 | /* reserve a descriptor for the offload context */ |
84fa7933 | 3420 | if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
1da177e4 | 3421 | count++; |
2648345f | 3422 | count++; |
fd803241 | 3423 | |
fd803241 | 3424 | /* Controller Erratum workaround */ |
89114afd | 3425 | if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb)) |
fd803241 | 3426 | count++; |
fd803241 | 3427 | |
1da177e4 LT |
3428 | count += TXD_USE_COUNT(len, max_txd_pwr); |
3429 | ||
96838a40 | 3430 | if (adapter->pcix_82544) |
1da177e4 LT |
3431 | count++; |
3432 | ||
96838a40 | 3433 | /* work-around for errata 10 and it applies to all controllers |
97338bde MC |
3434 | * in PCI-X mode, so add one more descriptor to the count |
3435 | */ | |
96838a40 | 3436 | if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && |
97338bde MC |
3437 | (len > 2015))) |
3438 | count++; | |
3439 | ||
1da177e4 | 3440 | nr_frags = skb_shinfo(skb)->nr_frags; |
96838a40 | 3441 | for (f = 0; f < nr_frags; f++) |
1da177e4 LT |
3442 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, |
3443 | max_txd_pwr); | |
96838a40 | 3444 | if (adapter->pcix_82544) |
1da177e4 LT |
3445 | count += nr_frags; |
3446 | ||
0f15a8fa JK |
3447 | |
3448 | if (adapter->hw.tx_pkt_filtering && | |
3449 | (adapter->hw.mac_type == e1000_82573)) | |
2d7edb92 MC |
3450 | e1000_transfer_dhcp_info(adapter, skb); |
3451 | ||
f50393fe | 3452 | if (!spin_trylock_irqsave(&tx_ring->tx_lock, flags)) |
581d708e | 3453 | /* Collision - tell upper layer to requeue */ |
581d708e | 3454 | return NETDEV_TX_LOCKED; |
1da177e4 LT |
3455 | |
3456 | /* need: count + 2 desc gap to keep tail from touching | |
3457 | * head, otherwise try next time */ | |
65c7973f | 3458 | if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2))) { |
581d708e | 3459 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
3460 | return NETDEV_TX_BUSY; |
3461 | } | |
3462 | ||
96838a40 JB |
3463 | if (unlikely(adapter->hw.mac_type == e1000_82547)) { |
3464 | if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) { | |
1da177e4 | 3465 | netif_stop_queue(netdev); |
1314bbf3 | 3466 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); |
581d708e | 3467 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
3468 | return NETDEV_TX_BUSY; |
3469 | } | |
3470 | } | |
3471 | ||
96838a40 | 3472 | if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) { |
1da177e4 LT |
3473 | tx_flags |= E1000_TX_FLAGS_VLAN; |
3474 | tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); | |
3475 | } | |
3476 | ||
581d708e | 3477 | first = tx_ring->next_to_use; |
96838a40 | 3478 | |
581d708e | 3479 | tso = e1000_tso(adapter, tx_ring, skb); |
1da177e4 LT |
3480 | if (tso < 0) { |
3481 | dev_kfree_skb_any(skb); | |
581d708e | 3482 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
3483 | return NETDEV_TX_OK; |
3484 | } | |
3485 | ||
fd803241 JK |
3486 | if (likely(tso)) { |
3487 | tx_ring->last_tx_tso = 1; | |
1da177e4 | 3488 | tx_flags |= E1000_TX_FLAGS_TSO; |
fd803241 | 3489 | } else if (likely(e1000_tx_csum(adapter, tx_ring, skb))) |
1da177e4 LT |
3490 | tx_flags |= E1000_TX_FLAGS_CSUM; |
3491 | ||
2d7edb92 | 3492 | /* Old method was to assume IPv4 packet by default if TSO was enabled. |
868d5309 | 3493 | * 82571 hardware supports TSO capabilities for IPv6 as well... |
2d7edb92 | 3494 | * no longer assume, we must. */ |
60828236 | 3495 | if (likely(skb->protocol == htons(ETH_P_IP))) |
2d7edb92 MC |
3496 | tx_flags |= E1000_TX_FLAGS_IPV4; |
3497 | ||
581d708e MC |
3498 | e1000_tx_queue(adapter, tx_ring, tx_flags, |
3499 | e1000_tx_map(adapter, tx_ring, skb, first, | |
3500 | max_per_txd, nr_frags, mss)); | |
1da177e4 LT |
3501 | |
3502 | netdev->trans_start = jiffies; | |
3503 | ||
3504 | /* Make sure there is space in the ring for the next send. */ | |
65c7973f | 3505 | e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2); |
1da177e4 | 3506 | |
581d708e | 3507 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
3508 | return NETDEV_TX_OK; |
3509 | } | |
3510 | ||
3511 | /** | |
3512 | * e1000_tx_timeout - Respond to a Tx Hang | |
3513 | * @netdev: network interface device structure | |
3514 | **/ | |
3515 | ||
3516 | static void | |
3517 | e1000_tx_timeout(struct net_device *netdev) | |
3518 | { | |
60490fe0 | 3519 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
3520 | |
3521 | /* Do the reset outside of interrupt context */ | |
87041639 JK |
3522 | adapter->tx_timeout_count++; |
3523 | schedule_work(&adapter->reset_task); | |
1da177e4 LT |
3524 | } |
3525 | ||
3526 | static void | |
65f27f38 | 3527 | e1000_reset_task(struct work_struct *work) |
1da177e4 | 3528 | { |
65f27f38 DH |
3529 | struct e1000_adapter *adapter = |
3530 | container_of(work, struct e1000_adapter, reset_task); | |
1da177e4 | 3531 | |
2db10a08 | 3532 | e1000_reinit_locked(adapter); |
1da177e4 LT |
3533 | } |
3534 | ||
3535 | /** | |
3536 | * e1000_get_stats - Get System Network Statistics | |
3537 | * @netdev: network interface device structure | |
3538 | * | |
3539 | * Returns the address of the device statistics structure. | |
3540 | * The statistics are actually updated from the timer callback. | |
3541 | **/ | |
3542 | ||
3543 | static struct net_device_stats * | |
3544 | e1000_get_stats(struct net_device *netdev) | |
3545 | { | |
60490fe0 | 3546 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3547 | |
6b7660cd | 3548 | /* only return the current stats */ |
1da177e4 LT |
3549 | return &adapter->net_stats; |
3550 | } | |
3551 | ||
3552 | /** | |
3553 | * e1000_change_mtu - Change the Maximum Transfer Unit | |
3554 | * @netdev: network interface device structure | |
3555 | * @new_mtu: new value for maximum frame size | |
3556 | * | |
3557 | * Returns 0 on success, negative on failure | |
3558 | **/ | |
3559 | ||
3560 | static int | |
3561 | e1000_change_mtu(struct net_device *netdev, int new_mtu) | |
3562 | { | |
60490fe0 | 3563 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3564 | int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
85b22eb6 | 3565 | uint16_t eeprom_data = 0; |
1da177e4 | 3566 | |
96838a40 JB |
3567 | if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || |
3568 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
3569 | DPRINTK(PROBE, ERR, "Invalid MTU setting\n"); | |
1da177e4 | 3570 | return -EINVAL; |
2d7edb92 | 3571 | } |
1da177e4 | 3572 | |
997f5cbd JK |
3573 | /* Adapter-specific max frame size limits. */ |
3574 | switch (adapter->hw.mac_type) { | |
9e2feace | 3575 | case e1000_undefined ... e1000_82542_rev2_1: |
cd94dd0b | 3576 | case e1000_ich8lan: |
997f5cbd JK |
3577 | if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) { |
3578 | DPRINTK(PROBE, ERR, "Jumbo Frames not supported.\n"); | |
2d7edb92 | 3579 | return -EINVAL; |
2d7edb92 | 3580 | } |
997f5cbd | 3581 | break; |
85b22eb6 | 3582 | case e1000_82573: |
249d71d6 BA |
3583 | /* Jumbo Frames not supported if: |
3584 | * - this is not an 82573L device | |
3585 | * - ASPM is enabled in any way (0x1A bits 3:2) */ | |
85b22eb6 JK |
3586 | e1000_read_eeprom(&adapter->hw, EEPROM_INIT_3GIO_3, 1, |
3587 | &eeprom_data); | |
249d71d6 BA |
3588 | if ((adapter->hw.device_id != E1000_DEV_ID_82573L) || |
3589 | (eeprom_data & EEPROM_WORD1A_ASPM_MASK)) { | |
85b22eb6 JK |
3590 | if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) { |
3591 | DPRINTK(PROBE, ERR, | |
3592 | "Jumbo Frames not supported.\n"); | |
3593 | return -EINVAL; | |
3594 | } | |
3595 | break; | |
3596 | } | |
249d71d6 BA |
3597 | /* ERT will be enabled later to enable wire speed receives */ |
3598 | ||
85b22eb6 | 3599 | /* fall through to get support */ |
997f5cbd JK |
3600 | case e1000_82571: |
3601 | case e1000_82572: | |
87041639 | 3602 | case e1000_80003es2lan: |
997f5cbd JK |
3603 | #define MAX_STD_JUMBO_FRAME_SIZE 9234 |
3604 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { | |
3605 | DPRINTK(PROBE, ERR, "MTU > 9216 not supported.\n"); | |
3606 | return -EINVAL; | |
3607 | } | |
3608 | break; | |
3609 | default: | |
3610 | /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */ | |
3611 | break; | |
1da177e4 LT |
3612 | } |
3613 | ||
87f5032e | 3614 | /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
9e2feace AK |
3615 | * means we reserve 2 more, this pushes us to allocate from the next |
3616 | * larger slab size | |
3617 | * i.e. RXBUFFER_2048 --> size-4096 slab */ | |
3618 | ||
3619 | if (max_frame <= E1000_RXBUFFER_256) | |
3620 | adapter->rx_buffer_len = E1000_RXBUFFER_256; | |
3621 | else if (max_frame <= E1000_RXBUFFER_512) | |
3622 | adapter->rx_buffer_len = E1000_RXBUFFER_512; | |
3623 | else if (max_frame <= E1000_RXBUFFER_1024) | |
3624 | adapter->rx_buffer_len = E1000_RXBUFFER_1024; | |
3625 | else if (max_frame <= E1000_RXBUFFER_2048) | |
3626 | adapter->rx_buffer_len = E1000_RXBUFFER_2048; | |
3627 | else if (max_frame <= E1000_RXBUFFER_4096) | |
3628 | adapter->rx_buffer_len = E1000_RXBUFFER_4096; | |
3629 | else if (max_frame <= E1000_RXBUFFER_8192) | |
3630 | adapter->rx_buffer_len = E1000_RXBUFFER_8192; | |
3631 | else if (max_frame <= E1000_RXBUFFER_16384) | |
3632 | adapter->rx_buffer_len = E1000_RXBUFFER_16384; | |
3633 | ||
3634 | /* adjust allocation if LPE protects us, and we aren't using SBP */ | |
9e2feace AK |
3635 | if (!adapter->hw.tbi_compatibility_on && |
3636 | ((max_frame == MAXIMUM_ETHERNET_FRAME_SIZE) || | |
3637 | (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE))) | |
3638 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; | |
997f5cbd | 3639 | |
2d7edb92 | 3640 | netdev->mtu = new_mtu; |
83cd8279 | 3641 | adapter->hw.max_frame_size = max_frame; |
2d7edb92 | 3642 | |
2db10a08 AK |
3643 | if (netif_running(netdev)) |
3644 | e1000_reinit_locked(adapter); | |
1da177e4 | 3645 | |
1da177e4 LT |
3646 | return 0; |
3647 | } | |
3648 | ||
3649 | /** | |
3650 | * e1000_update_stats - Update the board statistics counters | |
3651 | * @adapter: board private structure | |
3652 | **/ | |
3653 | ||
3654 | void | |
3655 | e1000_update_stats(struct e1000_adapter *adapter) | |
3656 | { | |
3657 | struct e1000_hw *hw = &adapter->hw; | |
282f33c9 | 3658 | struct pci_dev *pdev = adapter->pdev; |
1da177e4 LT |
3659 | unsigned long flags; |
3660 | uint16_t phy_tmp; | |
3661 | ||
3662 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF | |
3663 | ||
282f33c9 LV |
3664 | /* |
3665 | * Prevent stats update while adapter is being reset, or if the pci | |
3666 | * connection is down. | |
3667 | */ | |
9026729b | 3668 | if (adapter->link_speed == 0) |
282f33c9 | 3669 | return; |
81b1955e | 3670 | if (pci_channel_offline(pdev)) |
9026729b AK |
3671 | return; |
3672 | ||
1da177e4 LT |
3673 | spin_lock_irqsave(&adapter->stats_lock, flags); |
3674 | ||
828d055f | 3675 | /* these counters are modified from e1000_tbi_adjust_stats, |
1da177e4 LT |
3676 | * called from the interrupt context, so they must only |
3677 | * be written while holding adapter->stats_lock | |
3678 | */ | |
3679 | ||
3680 | adapter->stats.crcerrs += E1000_READ_REG(hw, CRCERRS); | |
3681 | adapter->stats.gprc += E1000_READ_REG(hw, GPRC); | |
3682 | adapter->stats.gorcl += E1000_READ_REG(hw, GORCL); | |
3683 | adapter->stats.gorch += E1000_READ_REG(hw, GORCH); | |
3684 | adapter->stats.bprc += E1000_READ_REG(hw, BPRC); | |
3685 | adapter->stats.mprc += E1000_READ_REG(hw, MPRC); | |
3686 | adapter->stats.roc += E1000_READ_REG(hw, ROC); | |
cd94dd0b AK |
3687 | |
3688 | if (adapter->hw.mac_type != e1000_ich8lan) { | |
90fb5135 AK |
3689 | adapter->stats.prc64 += E1000_READ_REG(hw, PRC64); |
3690 | adapter->stats.prc127 += E1000_READ_REG(hw, PRC127); | |
3691 | adapter->stats.prc255 += E1000_READ_REG(hw, PRC255); | |
3692 | adapter->stats.prc511 += E1000_READ_REG(hw, PRC511); | |
3693 | adapter->stats.prc1023 += E1000_READ_REG(hw, PRC1023); | |
3694 | adapter->stats.prc1522 += E1000_READ_REG(hw, PRC1522); | |
cd94dd0b | 3695 | } |
1da177e4 LT |
3696 | |
3697 | adapter->stats.symerrs += E1000_READ_REG(hw, SYMERRS); | |
3698 | adapter->stats.mpc += E1000_READ_REG(hw, MPC); | |
3699 | adapter->stats.scc += E1000_READ_REG(hw, SCC); | |
3700 | adapter->stats.ecol += E1000_READ_REG(hw, ECOL); | |
3701 | adapter->stats.mcc += E1000_READ_REG(hw, MCC); | |
3702 | adapter->stats.latecol += E1000_READ_REG(hw, LATECOL); | |
3703 | adapter->stats.dc += E1000_READ_REG(hw, DC); | |
3704 | adapter->stats.sec += E1000_READ_REG(hw, SEC); | |
3705 | adapter->stats.rlec += E1000_READ_REG(hw, RLEC); | |
3706 | adapter->stats.xonrxc += E1000_READ_REG(hw, XONRXC); | |
3707 | adapter->stats.xontxc += E1000_READ_REG(hw, XONTXC); | |
3708 | adapter->stats.xoffrxc += E1000_READ_REG(hw, XOFFRXC); | |
3709 | adapter->stats.xofftxc += E1000_READ_REG(hw, XOFFTXC); | |
3710 | adapter->stats.fcruc += E1000_READ_REG(hw, FCRUC); | |
3711 | adapter->stats.gptc += E1000_READ_REG(hw, GPTC); | |
3712 | adapter->stats.gotcl += E1000_READ_REG(hw, GOTCL); | |
3713 | adapter->stats.gotch += E1000_READ_REG(hw, GOTCH); | |
3714 | adapter->stats.rnbc += E1000_READ_REG(hw, RNBC); | |
3715 | adapter->stats.ruc += E1000_READ_REG(hw, RUC); | |
3716 | adapter->stats.rfc += E1000_READ_REG(hw, RFC); | |
3717 | adapter->stats.rjc += E1000_READ_REG(hw, RJC); | |
3718 | adapter->stats.torl += E1000_READ_REG(hw, TORL); | |
3719 | adapter->stats.torh += E1000_READ_REG(hw, TORH); | |
3720 | adapter->stats.totl += E1000_READ_REG(hw, TOTL); | |
3721 | adapter->stats.toth += E1000_READ_REG(hw, TOTH); | |
3722 | adapter->stats.tpr += E1000_READ_REG(hw, TPR); | |
cd94dd0b AK |
3723 | |
3724 | if (adapter->hw.mac_type != e1000_ich8lan) { | |
90fb5135 AK |
3725 | adapter->stats.ptc64 += E1000_READ_REG(hw, PTC64); |
3726 | adapter->stats.ptc127 += E1000_READ_REG(hw, PTC127); | |
3727 | adapter->stats.ptc255 += E1000_READ_REG(hw, PTC255); | |
3728 | adapter->stats.ptc511 += E1000_READ_REG(hw, PTC511); | |
3729 | adapter->stats.ptc1023 += E1000_READ_REG(hw, PTC1023); | |
3730 | adapter->stats.ptc1522 += E1000_READ_REG(hw, PTC1522); | |
cd94dd0b AK |
3731 | } |
3732 | ||
1da177e4 LT |
3733 | adapter->stats.mptc += E1000_READ_REG(hw, MPTC); |
3734 | adapter->stats.bptc += E1000_READ_REG(hw, BPTC); | |
3735 | ||
3736 | /* used for adaptive IFS */ | |
3737 | ||
3738 | hw->tx_packet_delta = E1000_READ_REG(hw, TPT); | |
3739 | adapter->stats.tpt += hw->tx_packet_delta; | |
3740 | hw->collision_delta = E1000_READ_REG(hw, COLC); | |
3741 | adapter->stats.colc += hw->collision_delta; | |
3742 | ||
96838a40 | 3743 | if (hw->mac_type >= e1000_82543) { |
1da177e4 LT |
3744 | adapter->stats.algnerrc += E1000_READ_REG(hw, ALGNERRC); |
3745 | adapter->stats.rxerrc += E1000_READ_REG(hw, RXERRC); | |
3746 | adapter->stats.tncrs += E1000_READ_REG(hw, TNCRS); | |
3747 | adapter->stats.cexterr += E1000_READ_REG(hw, CEXTERR); | |
3748 | adapter->stats.tsctc += E1000_READ_REG(hw, TSCTC); | |
3749 | adapter->stats.tsctfc += E1000_READ_REG(hw, TSCTFC); | |
3750 | } | |
96838a40 | 3751 | if (hw->mac_type > e1000_82547_rev_2) { |
2d7edb92 MC |
3752 | adapter->stats.iac += E1000_READ_REG(hw, IAC); |
3753 | adapter->stats.icrxoc += E1000_READ_REG(hw, ICRXOC); | |
cd94dd0b AK |
3754 | |
3755 | if (adapter->hw.mac_type != e1000_ich8lan) { | |
90fb5135 AK |
3756 | adapter->stats.icrxptc += E1000_READ_REG(hw, ICRXPTC); |
3757 | adapter->stats.icrxatc += E1000_READ_REG(hw, ICRXATC); | |
3758 | adapter->stats.ictxptc += E1000_READ_REG(hw, ICTXPTC); | |
3759 | adapter->stats.ictxatc += E1000_READ_REG(hw, ICTXATC); | |
3760 | adapter->stats.ictxqec += E1000_READ_REG(hw, ICTXQEC); | |
3761 | adapter->stats.ictxqmtc += E1000_READ_REG(hw, ICTXQMTC); | |
3762 | adapter->stats.icrxdmtc += E1000_READ_REG(hw, ICRXDMTC); | |
cd94dd0b | 3763 | } |
2d7edb92 | 3764 | } |
1da177e4 LT |
3765 | |
3766 | /* Fill out the OS statistics structure */ | |
1da177e4 LT |
3767 | adapter->net_stats.multicast = adapter->stats.mprc; |
3768 | adapter->net_stats.collisions = adapter->stats.colc; | |
3769 | ||
3770 | /* Rx Errors */ | |
3771 | ||
87041639 JK |
3772 | /* RLEC on some newer hardware can be incorrect so build |
3773 | * our own version based on RUC and ROC */ | |
1da177e4 LT |
3774 | adapter->net_stats.rx_errors = adapter->stats.rxerrc + |
3775 | adapter->stats.crcerrs + adapter->stats.algnerrc + | |
87041639 JK |
3776 | adapter->stats.ruc + adapter->stats.roc + |
3777 | adapter->stats.cexterr; | |
49559854 MW |
3778 | adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc; |
3779 | adapter->net_stats.rx_length_errors = adapter->stats.rlerrc; | |
1da177e4 LT |
3780 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; |
3781 | adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; | |
1da177e4 LT |
3782 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; |
3783 | ||
3784 | /* Tx Errors */ | |
49559854 MW |
3785 | adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol; |
3786 | adapter->net_stats.tx_errors = adapter->stats.txerrc; | |
1da177e4 LT |
3787 | adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; |
3788 | adapter->net_stats.tx_window_errors = adapter->stats.latecol; | |
3789 | adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; | |
167fb284 JG |
3790 | if (adapter->hw.bad_tx_carr_stats_fd && |
3791 | adapter->link_duplex == FULL_DUPLEX) { | |
3792 | adapter->net_stats.tx_carrier_errors = 0; | |
3793 | adapter->stats.tncrs = 0; | |
3794 | } | |
1da177e4 LT |
3795 | |
3796 | /* Tx Dropped needs to be maintained elsewhere */ | |
3797 | ||
3798 | /* Phy Stats */ | |
96838a40 JB |
3799 | if (hw->media_type == e1000_media_type_copper) { |
3800 | if ((adapter->link_speed == SPEED_1000) && | |
1da177e4 LT |
3801 | (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
3802 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; | |
3803 | adapter->phy_stats.idle_errors += phy_tmp; | |
3804 | } | |
3805 | ||
96838a40 | 3806 | if ((hw->mac_type <= e1000_82546) && |
1da177e4 LT |
3807 | (hw->phy_type == e1000_phy_m88) && |
3808 | !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) | |
3809 | adapter->phy_stats.receive_errors += phy_tmp; | |
3810 | } | |
3811 | ||
15e376b4 JG |
3812 | /* Management Stats */ |
3813 | if (adapter->hw.has_smbus) { | |
3814 | adapter->stats.mgptc += E1000_READ_REG(hw, MGTPTC); | |
3815 | adapter->stats.mgprc += E1000_READ_REG(hw, MGTPRC); | |
3816 | adapter->stats.mgpdc += E1000_READ_REG(hw, MGTPDC); | |
3817 | } | |
3818 | ||
1da177e4 LT |
3819 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
3820 | } | |
9ac98284 JB |
3821 | |
3822 | /** | |
3823 | * e1000_intr_msi - Interrupt Handler | |
3824 | * @irq: interrupt number | |
3825 | * @data: pointer to a network interface device structure | |
3826 | **/ | |
3827 | ||
b5fc8f0c JB |
3828 | static irqreturn_t |
3829 | e1000_intr_msi(int irq, void *data) | |
9ac98284 JB |
3830 | { |
3831 | struct net_device *netdev = data; | |
3832 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3833 | struct e1000_hw *hw = &adapter->hw; | |
3834 | #ifndef CONFIG_E1000_NAPI | |
3835 | int i; | |
3836 | #endif | |
b5fc8f0c | 3837 | uint32_t icr = E1000_READ_REG(hw, ICR); |
9ac98284 | 3838 | |
9ac98284 | 3839 | #ifdef CONFIG_E1000_NAPI |
b5fc8f0c JB |
3840 | /* read ICR disables interrupts using IAM, so keep up with our |
3841 | * enable/disable accounting */ | |
3842 | atomic_inc(&adapter->irq_sem); | |
9ac98284 | 3843 | #endif |
b5fc8f0c JB |
3844 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
3845 | hw->get_link_status = 1; | |
3846 | /* 80003ES2LAN workaround-- For packet buffer work-around on | |
3847 | * link down event; disable receives here in the ISR and reset | |
3848 | * adapter in watchdog */ | |
3849 | if (netif_carrier_ok(netdev) && | |
3850 | (adapter->hw.mac_type == e1000_80003es2lan)) { | |
3851 | /* disable receives */ | |
3852 | uint32_t rctl = E1000_READ_REG(hw, RCTL); | |
3853 | E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); | |
9ac98284 | 3854 | } |
b5fc8f0c JB |
3855 | /* guard against interrupt when we're going down */ |
3856 | if (!test_bit(__E1000_DOWN, &adapter->flags)) | |
3857 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
9ac98284 JB |
3858 | } |
3859 | ||
3860 | #ifdef CONFIG_E1000_NAPI | |
bea3348e | 3861 | if (likely(netif_rx_schedule_prep(netdev, &adapter->napi))) { |
835bb129 JB |
3862 | adapter->total_tx_bytes = 0; |
3863 | adapter->total_tx_packets = 0; | |
3864 | adapter->total_rx_bytes = 0; | |
3865 | adapter->total_rx_packets = 0; | |
bea3348e | 3866 | __netif_rx_schedule(netdev, &adapter->napi); |
835bb129 | 3867 | } else |
9ac98284 JB |
3868 | e1000_irq_enable(adapter); |
3869 | #else | |
835bb129 JB |
3870 | adapter->total_tx_bytes = 0; |
3871 | adapter->total_rx_bytes = 0; | |
3872 | adapter->total_tx_packets = 0; | |
3873 | adapter->total_rx_packets = 0; | |
3874 | ||
9ac98284 JB |
3875 | for (i = 0; i < E1000_MAX_INTR; i++) |
3876 | if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) & | |
46fcc86d | 3877 | !e1000_clean_tx_irq(adapter, adapter->tx_ring))) |
9ac98284 | 3878 | break; |
835bb129 JB |
3879 | |
3880 | if (likely(adapter->itr_setting & 3)) | |
3881 | e1000_set_itr(adapter); | |
9ac98284 JB |
3882 | #endif |
3883 | ||
3884 | return IRQ_HANDLED; | |
3885 | } | |
1da177e4 LT |
3886 | |
3887 | /** | |
3888 | * e1000_intr - Interrupt Handler | |
3889 | * @irq: interrupt number | |
3890 | * @data: pointer to a network interface device structure | |
1da177e4 LT |
3891 | **/ |
3892 | ||
3893 | static irqreturn_t | |
7d12e780 | 3894 | e1000_intr(int irq, void *data) |
1da177e4 LT |
3895 | { |
3896 | struct net_device *netdev = data; | |
60490fe0 | 3897 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3898 | struct e1000_hw *hw = &adapter->hw; |
87041639 | 3899 | uint32_t rctl, icr = E1000_READ_REG(hw, ICR); |
1e613fd9 | 3900 | #ifndef CONFIG_E1000_NAPI |
581d708e | 3901 | int i; |
835bb129 JB |
3902 | #endif |
3903 | if (unlikely(!icr)) | |
3904 | return IRQ_NONE; /* Not our interrupt */ | |
3905 | ||
3906 | #ifdef CONFIG_E1000_NAPI | |
3907 | /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is | |
3908 | * not set, then the adapter didn't send an interrupt */ | |
3909 | if (unlikely(hw->mac_type >= e1000_82571 && | |
3910 | !(icr & E1000_ICR_INT_ASSERTED))) | |
3911 | return IRQ_NONE; | |
3912 | ||
1e613fd9 JK |
3913 | /* Interrupt Auto-Mask...upon reading ICR, |
3914 | * interrupts are masked. No need for the | |
3915 | * IMC write, but it does mean we should | |
3916 | * account for it ASAP. */ | |
3917 | if (likely(hw->mac_type >= e1000_82571)) | |
3918 | atomic_inc(&adapter->irq_sem); | |
be2b28ed | 3919 | #endif |
1da177e4 | 3920 | |
96838a40 | 3921 | if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { |
1da177e4 | 3922 | hw->get_link_status = 1; |
87041639 JK |
3923 | /* 80003ES2LAN workaround-- |
3924 | * For packet buffer work-around on link down event; | |
3925 | * disable receives here in the ISR and | |
3926 | * reset adapter in watchdog | |
3927 | */ | |
3928 | if (netif_carrier_ok(netdev) && | |
3929 | (adapter->hw.mac_type == e1000_80003es2lan)) { | |
3930 | /* disable receives */ | |
3931 | rctl = E1000_READ_REG(hw, RCTL); | |
3932 | E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); | |
3933 | } | |
1314bbf3 AK |
3934 | /* guard against interrupt when we're going down */ |
3935 | if (!test_bit(__E1000_DOWN, &adapter->flags)) | |
3936 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1da177e4 LT |
3937 | } |
3938 | ||
3939 | #ifdef CONFIG_E1000_NAPI | |
1e613fd9 | 3940 | if (unlikely(hw->mac_type < e1000_82571)) { |
835bb129 | 3941 | /* disable interrupts, without the synchronize_irq bit */ |
1e613fd9 JK |
3942 | atomic_inc(&adapter->irq_sem); |
3943 | E1000_WRITE_REG(hw, IMC, ~0); | |
3944 | E1000_WRITE_FLUSH(hw); | |
3945 | } | |
bea3348e | 3946 | if (likely(netif_rx_schedule_prep(netdev, &adapter->napi))) { |
835bb129 JB |
3947 | adapter->total_tx_bytes = 0; |
3948 | adapter->total_tx_packets = 0; | |
3949 | adapter->total_rx_bytes = 0; | |
3950 | adapter->total_rx_packets = 0; | |
bea3348e | 3951 | __netif_rx_schedule(netdev, &adapter->napi); |
835bb129 | 3952 | } else |
90fb5135 AK |
3953 | /* this really should not happen! if it does it is basically a |
3954 | * bug, but not a hard error, so enable ints and continue */ | |
581d708e | 3955 | e1000_irq_enable(adapter); |
c1605eb3 | 3956 | #else |
1da177e4 | 3957 | /* Writing IMC and IMS is needed for 82547. |
96838a40 JB |
3958 | * Due to Hub Link bus being occupied, an interrupt |
3959 | * de-assertion message is not able to be sent. | |
3960 | * When an interrupt assertion message is generated later, | |
3961 | * two messages are re-ordered and sent out. | |
3962 | * That causes APIC to think 82547 is in de-assertion | |
3963 | * state, while 82547 is in assertion state, resulting | |
3964 | * in dead lock. Writing IMC forces 82547 into | |
3965 | * de-assertion state. | |
3966 | */ | |
3967 | if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) { | |
1da177e4 | 3968 | atomic_inc(&adapter->irq_sem); |
2648345f | 3969 | E1000_WRITE_REG(hw, IMC, ~0); |
1da177e4 LT |
3970 | } |
3971 | ||
835bb129 JB |
3972 | adapter->total_tx_bytes = 0; |
3973 | adapter->total_rx_bytes = 0; | |
3974 | adapter->total_tx_packets = 0; | |
3975 | adapter->total_rx_packets = 0; | |
3976 | ||
96838a40 JB |
3977 | for (i = 0; i < E1000_MAX_INTR; i++) |
3978 | if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) & | |
46fcc86d | 3979 | !e1000_clean_tx_irq(adapter, adapter->tx_ring))) |
1da177e4 LT |
3980 | break; |
3981 | ||
835bb129 JB |
3982 | if (likely(adapter->itr_setting & 3)) |
3983 | e1000_set_itr(adapter); | |
3984 | ||
96838a40 | 3985 | if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) |
1da177e4 | 3986 | e1000_irq_enable(adapter); |
581d708e | 3987 | |
c1605eb3 | 3988 | #endif |
1da177e4 LT |
3989 | return IRQ_HANDLED; |
3990 | } | |
3991 | ||
3992 | #ifdef CONFIG_E1000_NAPI | |
3993 | /** | |
3994 | * e1000_clean - NAPI Rx polling callback | |
3995 | * @adapter: board private structure | |
3996 | **/ | |
3997 | ||
3998 | static int | |
bea3348e | 3999 | e1000_clean(struct napi_struct *napi, int budget) |
1da177e4 | 4000 | { |
bea3348e SH |
4001 | struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); |
4002 | struct net_device *poll_dev = adapter->netdev; | |
d2c7ddd6 | 4003 | int tx_cleaned = 0, work_done = 0; |
581d708e MC |
4004 | |
4005 | /* Must NOT use netdev_priv macro here. */ | |
4006 | adapter = poll_dev->priv; | |
4007 | ||
d3d9e484 AK |
4008 | /* e1000_clean is called per-cpu. This lock protects |
4009 | * tx_ring[0] from being cleaned by multiple cpus | |
4010 | * simultaneously. A failure obtaining the lock means | |
4011 | * tx_ring[0] is currently being cleaned anyway. */ | |
4012 | if (spin_trylock(&adapter->tx_queue_lock)) { | |
d2c7ddd6 DM |
4013 | tx_cleaned = e1000_clean_tx_irq(adapter, |
4014 | &adapter->tx_ring[0]); | |
d3d9e484 | 4015 | spin_unlock(&adapter->tx_queue_lock); |
581d708e MC |
4016 | } |
4017 | ||
d3d9e484 | 4018 | adapter->clean_rx(adapter, &adapter->rx_ring[0], |
bea3348e | 4019 | &work_done, budget); |
96838a40 | 4020 | |
d2c7ddd6 DM |
4021 | if (tx_cleaned) |
4022 | work_done = budget; | |
4023 | ||
53e52c72 DM |
4024 | /* If budget not fully consumed, exit the polling mode */ |
4025 | if (work_done < budget) { | |
835bb129 JB |
4026 | if (likely(adapter->itr_setting & 3)) |
4027 | e1000_set_itr(adapter); | |
bea3348e | 4028 | netif_rx_complete(poll_dev, napi); |
1da177e4 | 4029 | e1000_irq_enable(adapter); |
1da177e4 LT |
4030 | } |
4031 | ||
bea3348e | 4032 | return work_done; |
1da177e4 LT |
4033 | } |
4034 | ||
4035 | #endif | |
4036 | /** | |
4037 | * e1000_clean_tx_irq - Reclaim resources after transmit completes | |
4038 | * @adapter: board private structure | |
4039 | **/ | |
4040 | ||
c3033b01 | 4041 | static bool |
581d708e MC |
4042 | e1000_clean_tx_irq(struct e1000_adapter *adapter, |
4043 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 4044 | { |
1da177e4 LT |
4045 | struct net_device *netdev = adapter->netdev; |
4046 | struct e1000_tx_desc *tx_desc, *eop_desc; | |
4047 | struct e1000_buffer *buffer_info; | |
4048 | unsigned int i, eop; | |
2a1af5d7 JK |
4049 | #ifdef CONFIG_E1000_NAPI |
4050 | unsigned int count = 0; | |
4051 | #endif | |
c3033b01 | 4052 | bool cleaned = false; |
835bb129 | 4053 | unsigned int total_tx_bytes=0, total_tx_packets=0; |
1da177e4 LT |
4054 | |
4055 | i = tx_ring->next_to_clean; | |
4056 | eop = tx_ring->buffer_info[i].next_to_watch; | |
4057 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
4058 | ||
581d708e | 4059 | while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) { |
c3033b01 | 4060 | for (cleaned = false; !cleaned; ) { |
1da177e4 LT |
4061 | tx_desc = E1000_TX_DESC(*tx_ring, i); |
4062 | buffer_info = &tx_ring->buffer_info[i]; | |
4063 | cleaned = (i == eop); | |
4064 | ||
835bb129 | 4065 | if (cleaned) { |
2b65326e | 4066 | struct sk_buff *skb = buffer_info->skb; |
7753b171 JB |
4067 | unsigned int segs, bytecount; |
4068 | segs = skb_shinfo(skb)->gso_segs ?: 1; | |
4069 | /* multiply data chunks by size of headers */ | |
4070 | bytecount = ((segs - 1) * skb_headlen(skb)) + | |
4071 | skb->len; | |
2b65326e | 4072 | total_tx_packets += segs; |
7753b171 | 4073 | total_tx_bytes += bytecount; |
835bb129 | 4074 | } |
fd803241 | 4075 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
a9ebadd6 | 4076 | tx_desc->upper.data = 0; |
1da177e4 | 4077 | |
96838a40 | 4078 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 | 4079 | } |
581d708e | 4080 | |
1da177e4 LT |
4081 | eop = tx_ring->buffer_info[i].next_to_watch; |
4082 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
2a1af5d7 JK |
4083 | #ifdef CONFIG_E1000_NAPI |
4084 | #define E1000_TX_WEIGHT 64 | |
4085 | /* weight of a sort for tx, to avoid endless transmit cleanup */ | |
46fcc86d | 4086 | if (count++ == E1000_TX_WEIGHT) break; |
2a1af5d7 | 4087 | #endif |
1da177e4 LT |
4088 | } |
4089 | ||
4090 | tx_ring->next_to_clean = i; | |
4091 | ||
77b2aad5 | 4092 | #define TX_WAKE_THRESHOLD 32 |
65c7973f JB |
4093 | if (unlikely(cleaned && netif_carrier_ok(netdev) && |
4094 | E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) { | |
4095 | /* Make sure that anybody stopping the queue after this | |
4096 | * sees the new next_to_clean. | |
4097 | */ | |
4098 | smp_mb(); | |
fcfb1224 | 4099 | if (netif_queue_stopped(netdev)) { |
77b2aad5 | 4100 | netif_wake_queue(netdev); |
fcfb1224 JB |
4101 | ++adapter->restart_queue; |
4102 | } | |
77b2aad5 | 4103 | } |
2648345f | 4104 | |
581d708e | 4105 | if (adapter->detect_tx_hung) { |
2648345f | 4106 | /* Detect a transmit hang in hardware, this serializes the |
1da177e4 | 4107 | * check with the clearing of time_stamp and movement of i */ |
c3033b01 | 4108 | adapter->detect_tx_hung = false; |
392137fa JK |
4109 | if (tx_ring->buffer_info[eop].dma && |
4110 | time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + | |
7e6c9861 | 4111 | (adapter->tx_timeout_factor * HZ)) |
70b8f1e1 | 4112 | && !(E1000_READ_REG(&adapter->hw, STATUS) & |
392137fa | 4113 | E1000_STATUS_TXOFF)) { |
70b8f1e1 MC |
4114 | |
4115 | /* detected Tx unit hang */ | |
c6963ef5 | 4116 | DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" |
7bfa4816 | 4117 | " Tx Queue <%lu>\n" |
70b8f1e1 MC |
4118 | " TDH <%x>\n" |
4119 | " TDT <%x>\n" | |
4120 | " next_to_use <%x>\n" | |
4121 | " next_to_clean <%x>\n" | |
4122 | "buffer_info[next_to_clean]\n" | |
70b8f1e1 MC |
4123 | " time_stamp <%lx>\n" |
4124 | " next_to_watch <%x>\n" | |
4125 | " jiffies <%lx>\n" | |
4126 | " next_to_watch.status <%x>\n", | |
7bfa4816 JK |
4127 | (unsigned long)((tx_ring - adapter->tx_ring) / |
4128 | sizeof(struct e1000_tx_ring)), | |
581d708e MC |
4129 | readl(adapter->hw.hw_addr + tx_ring->tdh), |
4130 | readl(adapter->hw.hw_addr + tx_ring->tdt), | |
70b8f1e1 | 4131 | tx_ring->next_to_use, |
392137fa JK |
4132 | tx_ring->next_to_clean, |
4133 | tx_ring->buffer_info[eop].time_stamp, | |
70b8f1e1 MC |
4134 | eop, |
4135 | jiffies, | |
4136 | eop_desc->upper.fields.status); | |
1da177e4 | 4137 | netif_stop_queue(netdev); |
70b8f1e1 | 4138 | } |
1da177e4 | 4139 | } |
835bb129 JB |
4140 | adapter->total_tx_bytes += total_tx_bytes; |
4141 | adapter->total_tx_packets += total_tx_packets; | |
ef90e4ec AK |
4142 | adapter->net_stats.tx_bytes += total_tx_bytes; |
4143 | adapter->net_stats.tx_packets += total_tx_packets; | |
1da177e4 LT |
4144 | return cleaned; |
4145 | } | |
4146 | ||
4147 | /** | |
4148 | * e1000_rx_checksum - Receive Checksum Offload for 82543 | |
2d7edb92 MC |
4149 | * @adapter: board private structure |
4150 | * @status_err: receive descriptor status and error fields | |
4151 | * @csum: receive descriptor csum field | |
4152 | * @sk_buff: socket buffer with received data | |
1da177e4 LT |
4153 | **/ |
4154 | ||
e619d523 | 4155 | static void |
1da177e4 | 4156 | e1000_rx_checksum(struct e1000_adapter *adapter, |
2d7edb92 MC |
4157 | uint32_t status_err, uint32_t csum, |
4158 | struct sk_buff *skb) | |
1da177e4 | 4159 | { |
2d7edb92 MC |
4160 | uint16_t status = (uint16_t)status_err; |
4161 | uint8_t errors = (uint8_t)(status_err >> 24); | |
4162 | skb->ip_summed = CHECKSUM_NONE; | |
4163 | ||
1da177e4 | 4164 | /* 82543 or newer only */ |
96838a40 | 4165 | if (unlikely(adapter->hw.mac_type < e1000_82543)) return; |
1da177e4 | 4166 | /* Ignore Checksum bit is set */ |
96838a40 | 4167 | if (unlikely(status & E1000_RXD_STAT_IXSM)) return; |
2d7edb92 | 4168 | /* TCP/UDP checksum error bit is set */ |
96838a40 | 4169 | if (unlikely(errors & E1000_RXD_ERR_TCPE)) { |
1da177e4 | 4170 | /* let the stack verify checksum errors */ |
1da177e4 | 4171 | adapter->hw_csum_err++; |
2d7edb92 MC |
4172 | return; |
4173 | } | |
4174 | /* TCP/UDP Checksum has not been calculated */ | |
96838a40 JB |
4175 | if (adapter->hw.mac_type <= e1000_82547_rev_2) { |
4176 | if (!(status & E1000_RXD_STAT_TCPCS)) | |
2d7edb92 | 4177 | return; |
1da177e4 | 4178 | } else { |
96838a40 | 4179 | if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) |
2d7edb92 MC |
4180 | return; |
4181 | } | |
4182 | /* It must be a TCP or UDP packet with a valid checksum */ | |
4183 | if (likely(status & E1000_RXD_STAT_TCPCS)) { | |
1da177e4 LT |
4184 | /* TCP checksum is good */ |
4185 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
2d7edb92 MC |
4186 | } else if (adapter->hw.mac_type > e1000_82547_rev_2) { |
4187 | /* IP fragment with UDP payload */ | |
4188 | /* Hardware complements the payload checksum, so we undo it | |
4189 | * and then put the value in host order for further stack use. | |
4190 | */ | |
3e18826c AV |
4191 | __sum16 sum = (__force __sum16)htons(csum); |
4192 | skb->csum = csum_unfold(~sum); | |
84fa7933 | 4193 | skb->ip_summed = CHECKSUM_COMPLETE; |
1da177e4 | 4194 | } |
2d7edb92 | 4195 | adapter->hw_csum_good++; |
1da177e4 LT |
4196 | } |
4197 | ||
4198 | /** | |
2d7edb92 | 4199 | * e1000_clean_rx_irq - Send received data up the network stack; legacy |
1da177e4 LT |
4200 | * @adapter: board private structure |
4201 | **/ | |
4202 | ||
c3033b01 | 4203 | static bool |
1da177e4 | 4204 | #ifdef CONFIG_E1000_NAPI |
581d708e MC |
4205 | e1000_clean_rx_irq(struct e1000_adapter *adapter, |
4206 | struct e1000_rx_ring *rx_ring, | |
4207 | int *work_done, int work_to_do) | |
1da177e4 | 4208 | #else |
581d708e MC |
4209 | e1000_clean_rx_irq(struct e1000_adapter *adapter, |
4210 | struct e1000_rx_ring *rx_ring) | |
1da177e4 LT |
4211 | #endif |
4212 | { | |
1da177e4 LT |
4213 | struct net_device *netdev = adapter->netdev; |
4214 | struct pci_dev *pdev = adapter->pdev; | |
86c3d59f JB |
4215 | struct e1000_rx_desc *rx_desc, *next_rxd; |
4216 | struct e1000_buffer *buffer_info, *next_buffer; | |
1da177e4 LT |
4217 | unsigned long flags; |
4218 | uint32_t length; | |
4219 | uint8_t last_byte; | |
4220 | unsigned int i; | |
72d64a43 | 4221 | int cleaned_count = 0; |
c3033b01 | 4222 | bool cleaned = false; |
835bb129 | 4223 | unsigned int total_rx_bytes=0, total_rx_packets=0; |
1da177e4 LT |
4224 | |
4225 | i = rx_ring->next_to_clean; | |
4226 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
b92ff8ee | 4227 | buffer_info = &rx_ring->buffer_info[i]; |
1da177e4 | 4228 | |
b92ff8ee | 4229 | while (rx_desc->status & E1000_RXD_STAT_DD) { |
24f476ee | 4230 | struct sk_buff *skb; |
a292ca6e | 4231 | u8 status; |
90fb5135 | 4232 | |
1da177e4 | 4233 | #ifdef CONFIG_E1000_NAPI |
96838a40 | 4234 | if (*work_done >= work_to_do) |
1da177e4 LT |
4235 | break; |
4236 | (*work_done)++; | |
4237 | #endif | |
a292ca6e | 4238 | status = rx_desc->status; |
b92ff8ee | 4239 | skb = buffer_info->skb; |
86c3d59f JB |
4240 | buffer_info->skb = NULL; |
4241 | ||
30320be8 JK |
4242 | prefetch(skb->data - NET_IP_ALIGN); |
4243 | ||
86c3d59f JB |
4244 | if (++i == rx_ring->count) i = 0; |
4245 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
30320be8 JK |
4246 | prefetch(next_rxd); |
4247 | ||
86c3d59f | 4248 | next_buffer = &rx_ring->buffer_info[i]; |
86c3d59f | 4249 | |
c3033b01 | 4250 | cleaned = true; |
72d64a43 | 4251 | cleaned_count++; |
a292ca6e JK |
4252 | pci_unmap_single(pdev, |
4253 | buffer_info->dma, | |
4254 | buffer_info->length, | |
1da177e4 LT |
4255 | PCI_DMA_FROMDEVICE); |
4256 | ||
1da177e4 LT |
4257 | length = le16_to_cpu(rx_desc->length); |
4258 | ||
a1415ee6 JK |
4259 | if (unlikely(!(status & E1000_RXD_STAT_EOP))) { |
4260 | /* All receives must fit into a single buffer */ | |
4261 | E1000_DBG("%s: Receive packet consumed multiple" | |
4262 | " buffers\n", netdev->name); | |
864c4e45 | 4263 | /* recycle */ |
8fc897b0 | 4264 | buffer_info->skb = skb; |
1da177e4 LT |
4265 | goto next_desc; |
4266 | } | |
4267 | ||
96838a40 | 4268 | if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { |
1da177e4 | 4269 | last_byte = *(skb->data + length - 1); |
b92ff8ee | 4270 | if (TBI_ACCEPT(&adapter->hw, status, |
1da177e4 LT |
4271 | rx_desc->errors, length, last_byte)) { |
4272 | spin_lock_irqsave(&adapter->stats_lock, flags); | |
a292ca6e JK |
4273 | e1000_tbi_adjust_stats(&adapter->hw, |
4274 | &adapter->stats, | |
1da177e4 LT |
4275 | length, skb->data); |
4276 | spin_unlock_irqrestore(&adapter->stats_lock, | |
4277 | flags); | |
4278 | length--; | |
4279 | } else { | |
9e2feace AK |
4280 | /* recycle */ |
4281 | buffer_info->skb = skb; | |
1da177e4 LT |
4282 | goto next_desc; |
4283 | } | |
1cb5821f | 4284 | } |
1da177e4 | 4285 | |
d2a1e213 JB |
4286 | /* adjust length to remove Ethernet CRC, this must be |
4287 | * done after the TBI_ACCEPT workaround above */ | |
4288 | length -= 4; | |
4289 | ||
835bb129 JB |
4290 | /* probably a little skewed due to removing CRC */ |
4291 | total_rx_bytes += length; | |
4292 | total_rx_packets++; | |
4293 | ||
a292ca6e JK |
4294 | /* code added for copybreak, this should improve |
4295 | * performance for small packets with large amounts | |
4296 | * of reassembly being done in the stack */ | |
1f753861 | 4297 | if (length < copybreak) { |
a292ca6e | 4298 | struct sk_buff *new_skb = |
87f5032e | 4299 | netdev_alloc_skb(netdev, length + NET_IP_ALIGN); |
a292ca6e JK |
4300 | if (new_skb) { |
4301 | skb_reserve(new_skb, NET_IP_ALIGN); | |
27d7ff46 ACM |
4302 | skb_copy_to_linear_data_offset(new_skb, |
4303 | -NET_IP_ALIGN, | |
4304 | (skb->data - | |
4305 | NET_IP_ALIGN), | |
4306 | (length + | |
4307 | NET_IP_ALIGN)); | |
a292ca6e JK |
4308 | /* save the skb in buffer_info as good */ |
4309 | buffer_info->skb = skb; | |
4310 | skb = new_skb; | |
a292ca6e | 4311 | } |
996695de AK |
4312 | /* else just continue with the old one */ |
4313 | } | |
a292ca6e | 4314 | /* end copybreak code */ |
996695de | 4315 | skb_put(skb, length); |
1da177e4 LT |
4316 | |
4317 | /* Receive Checksum Offload */ | |
a292ca6e JK |
4318 | e1000_rx_checksum(adapter, |
4319 | (uint32_t)(status) | | |
2d7edb92 | 4320 | ((uint32_t)(rx_desc->errors) << 24), |
c3d7a3a4 | 4321 | le16_to_cpu(rx_desc->csum), skb); |
96838a40 | 4322 | |
1da177e4 LT |
4323 | skb->protocol = eth_type_trans(skb, netdev); |
4324 | #ifdef CONFIG_E1000_NAPI | |
96838a40 | 4325 | if (unlikely(adapter->vlgrp && |
a292ca6e | 4326 | (status & E1000_RXD_STAT_VP))) { |
1da177e4 | 4327 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
2d7edb92 MC |
4328 | le16_to_cpu(rx_desc->special) & |
4329 | E1000_RXD_SPC_VLAN_MASK); | |
1da177e4 LT |
4330 | } else { |
4331 | netif_receive_skb(skb); | |
4332 | } | |
4333 | #else /* CONFIG_E1000_NAPI */ | |
96838a40 | 4334 | if (unlikely(adapter->vlgrp && |
b92ff8ee | 4335 | (status & E1000_RXD_STAT_VP))) { |
1da177e4 LT |
4336 | vlan_hwaccel_rx(skb, adapter->vlgrp, |
4337 | le16_to_cpu(rx_desc->special) & | |
4338 | E1000_RXD_SPC_VLAN_MASK); | |
4339 | } else { | |
4340 | netif_rx(skb); | |
4341 | } | |
4342 | #endif /* CONFIG_E1000_NAPI */ | |
4343 | netdev->last_rx = jiffies; | |
4344 | ||
4345 | next_desc: | |
4346 | rx_desc->status = 0; | |
1da177e4 | 4347 | |
72d64a43 JK |
4348 | /* return some buffers to hardware, one at a time is too slow */ |
4349 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
4350 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
4351 | cleaned_count = 0; | |
4352 | } | |
4353 | ||
30320be8 | 4354 | /* use prefetched values */ |
86c3d59f JB |
4355 | rx_desc = next_rxd; |
4356 | buffer_info = next_buffer; | |
1da177e4 | 4357 | } |
1da177e4 | 4358 | rx_ring->next_to_clean = i; |
72d64a43 JK |
4359 | |
4360 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
4361 | if (cleaned_count) | |
4362 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
2d7edb92 | 4363 | |
835bb129 JB |
4364 | adapter->total_rx_packets += total_rx_packets; |
4365 | adapter->total_rx_bytes += total_rx_bytes; | |
ef90e4ec AK |
4366 | adapter->net_stats.rx_bytes += total_rx_bytes; |
4367 | adapter->net_stats.rx_packets += total_rx_packets; | |
2d7edb92 MC |
4368 | return cleaned; |
4369 | } | |
4370 | ||
4371 | /** | |
4372 | * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split | |
4373 | * @adapter: board private structure | |
4374 | **/ | |
4375 | ||
c3033b01 | 4376 | static bool |
2d7edb92 | 4377 | #ifdef CONFIG_E1000_NAPI |
581d708e MC |
4378 | e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
4379 | struct e1000_rx_ring *rx_ring, | |
4380 | int *work_done, int work_to_do) | |
2d7edb92 | 4381 | #else |
581d708e MC |
4382 | e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
4383 | struct e1000_rx_ring *rx_ring) | |
2d7edb92 MC |
4384 | #endif |
4385 | { | |
86c3d59f | 4386 | union e1000_rx_desc_packet_split *rx_desc, *next_rxd; |
2d7edb92 MC |
4387 | struct net_device *netdev = adapter->netdev; |
4388 | struct pci_dev *pdev = adapter->pdev; | |
86c3d59f | 4389 | struct e1000_buffer *buffer_info, *next_buffer; |
2d7edb92 MC |
4390 | struct e1000_ps_page *ps_page; |
4391 | struct e1000_ps_page_dma *ps_page_dma; | |
24f476ee | 4392 | struct sk_buff *skb; |
2d7edb92 MC |
4393 | unsigned int i, j; |
4394 | uint32_t length, staterr; | |
72d64a43 | 4395 | int cleaned_count = 0; |
c3033b01 | 4396 | bool cleaned = false; |
835bb129 | 4397 | unsigned int total_rx_bytes=0, total_rx_packets=0; |
2d7edb92 MC |
4398 | |
4399 | i = rx_ring->next_to_clean; | |
4400 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
683a38f3 | 4401 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
9e2feace | 4402 | buffer_info = &rx_ring->buffer_info[i]; |
2d7edb92 | 4403 | |
96838a40 | 4404 | while (staterr & E1000_RXD_STAT_DD) { |
2d7edb92 MC |
4405 | ps_page = &rx_ring->ps_page[i]; |
4406 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
4407 | #ifdef CONFIG_E1000_NAPI | |
96838a40 | 4408 | if (unlikely(*work_done >= work_to_do)) |
2d7edb92 MC |
4409 | break; |
4410 | (*work_done)++; | |
4411 | #endif | |
86c3d59f JB |
4412 | skb = buffer_info->skb; |
4413 | ||
30320be8 JK |
4414 | /* in the packet split case this is header only */ |
4415 | prefetch(skb->data - NET_IP_ALIGN); | |
4416 | ||
86c3d59f JB |
4417 | if (++i == rx_ring->count) i = 0; |
4418 | next_rxd = E1000_RX_DESC_PS(*rx_ring, i); | |
30320be8 JK |
4419 | prefetch(next_rxd); |
4420 | ||
86c3d59f | 4421 | next_buffer = &rx_ring->buffer_info[i]; |
86c3d59f | 4422 | |
c3033b01 | 4423 | cleaned = true; |
72d64a43 | 4424 | cleaned_count++; |
2d7edb92 MC |
4425 | pci_unmap_single(pdev, buffer_info->dma, |
4426 | buffer_info->length, | |
4427 | PCI_DMA_FROMDEVICE); | |
4428 | ||
96838a40 | 4429 | if (unlikely(!(staterr & E1000_RXD_STAT_EOP))) { |
2d7edb92 MC |
4430 | E1000_DBG("%s: Packet Split buffers didn't pick up" |
4431 | " the full packet\n", netdev->name); | |
4432 | dev_kfree_skb_irq(skb); | |
4433 | goto next_desc; | |
4434 | } | |
1da177e4 | 4435 | |
96838a40 | 4436 | if (unlikely(staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK)) { |
2d7edb92 MC |
4437 | dev_kfree_skb_irq(skb); |
4438 | goto next_desc; | |
4439 | } | |
4440 | ||
4441 | length = le16_to_cpu(rx_desc->wb.middle.length0); | |
4442 | ||
96838a40 | 4443 | if (unlikely(!length)) { |
2d7edb92 MC |
4444 | E1000_DBG("%s: Last part of the packet spanning" |
4445 | " multiple descriptors\n", netdev->name); | |
4446 | dev_kfree_skb_irq(skb); | |
4447 | goto next_desc; | |
4448 | } | |
4449 | ||
4450 | /* Good Receive */ | |
4451 | skb_put(skb, length); | |
4452 | ||
dc7c6add JK |
4453 | { |
4454 | /* this looks ugly, but it seems compiler issues make it | |
4455 | more efficient than reusing j */ | |
4456 | int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]); | |
4457 | ||
4458 | /* page alloc/put takes too long and effects small packet | |
4459 | * throughput, so unsplit small packets and save the alloc/put*/ | |
1f753861 | 4460 | if (l1 && (l1 <= copybreak) && ((length + l1) <= adapter->rx_ps_bsize0)) { |
dc7c6add | 4461 | u8 *vaddr; |
76c224bc | 4462 | /* there is no documentation about how to call |
dc7c6add JK |
4463 | * kmap_atomic, so we can't hold the mapping |
4464 | * very long */ | |
4465 | pci_dma_sync_single_for_cpu(pdev, | |
4466 | ps_page_dma->ps_page_dma[0], | |
4467 | PAGE_SIZE, | |
4468 | PCI_DMA_FROMDEVICE); | |
4469 | vaddr = kmap_atomic(ps_page->ps_page[0], | |
4470 | KM_SKB_DATA_SOFTIRQ); | |
27a884dc | 4471 | memcpy(skb_tail_pointer(skb), vaddr, l1); |
dc7c6add JK |
4472 | kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ); |
4473 | pci_dma_sync_single_for_device(pdev, | |
4474 | ps_page_dma->ps_page_dma[0], | |
4475 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
f235a2ab AK |
4476 | /* remove the CRC */ |
4477 | l1 -= 4; | |
dc7c6add | 4478 | skb_put(skb, l1); |
dc7c6add JK |
4479 | goto copydone; |
4480 | } /* if */ | |
4481 | } | |
90fb5135 | 4482 | |
96838a40 | 4483 | for (j = 0; j < adapter->rx_ps_pages; j++) { |
30320be8 | 4484 | if (!(length= le16_to_cpu(rx_desc->wb.upper.length[j]))) |
2d7edb92 | 4485 | break; |
2d7edb92 MC |
4486 | pci_unmap_page(pdev, ps_page_dma->ps_page_dma[j], |
4487 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
4488 | ps_page_dma->ps_page_dma[j] = 0; | |
329bfd0b JK |
4489 | skb_fill_page_desc(skb, j, ps_page->ps_page[j], 0, |
4490 | length); | |
2d7edb92 | 4491 | ps_page->ps_page[j] = NULL; |
2d7edb92 MC |
4492 | skb->len += length; |
4493 | skb->data_len += length; | |
5d51b80f | 4494 | skb->truesize += length; |
2d7edb92 MC |
4495 | } |
4496 | ||
f235a2ab AK |
4497 | /* strip the ethernet crc, problem is we're using pages now so |
4498 | * this whole operation can get a little cpu intensive */ | |
4499 | pskb_trim(skb, skb->len - 4); | |
4500 | ||
dc7c6add | 4501 | copydone: |
835bb129 JB |
4502 | total_rx_bytes += skb->len; |
4503 | total_rx_packets++; | |
4504 | ||
2d7edb92 | 4505 | e1000_rx_checksum(adapter, staterr, |
c3d7a3a4 | 4506 | le16_to_cpu(rx_desc->wb.lower.hi_dword.csum_ip.csum), skb); |
2d7edb92 MC |
4507 | skb->protocol = eth_type_trans(skb, netdev); |
4508 | ||
96838a40 | 4509 | if (likely(rx_desc->wb.upper.header_status & |
c3d7a3a4 | 4510 | cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP))) |
e4c811c9 | 4511 | adapter->rx_hdr_split++; |
2d7edb92 | 4512 | #ifdef CONFIG_E1000_NAPI |
96838a40 | 4513 | if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) { |
2d7edb92 | 4514 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
683a38f3 MC |
4515 | le16_to_cpu(rx_desc->wb.middle.vlan) & |
4516 | E1000_RXD_SPC_VLAN_MASK); | |
2d7edb92 MC |
4517 | } else { |
4518 | netif_receive_skb(skb); | |
4519 | } | |
4520 | #else /* CONFIG_E1000_NAPI */ | |
96838a40 | 4521 | if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) { |
2d7edb92 | 4522 | vlan_hwaccel_rx(skb, adapter->vlgrp, |
683a38f3 MC |
4523 | le16_to_cpu(rx_desc->wb.middle.vlan) & |
4524 | E1000_RXD_SPC_VLAN_MASK); | |
2d7edb92 MC |
4525 | } else { |
4526 | netif_rx(skb); | |
4527 | } | |
4528 | #endif /* CONFIG_E1000_NAPI */ | |
4529 | netdev->last_rx = jiffies; | |
4530 | ||
4531 | next_desc: | |
c3d7a3a4 | 4532 | rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF); |
2d7edb92 | 4533 | buffer_info->skb = NULL; |
2d7edb92 | 4534 | |
72d64a43 JK |
4535 | /* return some buffers to hardware, one at a time is too slow */ |
4536 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
4537 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
4538 | cleaned_count = 0; | |
4539 | } | |
4540 | ||
30320be8 | 4541 | /* use prefetched values */ |
86c3d59f JB |
4542 | rx_desc = next_rxd; |
4543 | buffer_info = next_buffer; | |
4544 | ||
683a38f3 | 4545 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
2d7edb92 MC |
4546 | } |
4547 | rx_ring->next_to_clean = i; | |
72d64a43 JK |
4548 | |
4549 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
4550 | if (cleaned_count) | |
4551 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
1da177e4 | 4552 | |
835bb129 JB |
4553 | adapter->total_rx_packets += total_rx_packets; |
4554 | adapter->total_rx_bytes += total_rx_bytes; | |
ef90e4ec AK |
4555 | adapter->net_stats.rx_bytes += total_rx_bytes; |
4556 | adapter->net_stats.rx_packets += total_rx_packets; | |
1da177e4 LT |
4557 | return cleaned; |
4558 | } | |
4559 | ||
4560 | /** | |
2d7edb92 | 4561 | * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
1da177e4 LT |
4562 | * @adapter: address of board private structure |
4563 | **/ | |
4564 | ||
4565 | static void | |
581d708e | 4566 | e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
72d64a43 | 4567 | struct e1000_rx_ring *rx_ring, |
a292ca6e | 4568 | int cleaned_count) |
1da177e4 | 4569 | { |
1da177e4 LT |
4570 | struct net_device *netdev = adapter->netdev; |
4571 | struct pci_dev *pdev = adapter->pdev; | |
4572 | struct e1000_rx_desc *rx_desc; | |
4573 | struct e1000_buffer *buffer_info; | |
4574 | struct sk_buff *skb; | |
2648345f MC |
4575 | unsigned int i; |
4576 | unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN; | |
1da177e4 LT |
4577 | |
4578 | i = rx_ring->next_to_use; | |
4579 | buffer_info = &rx_ring->buffer_info[i]; | |
4580 | ||
a292ca6e | 4581 | while (cleaned_count--) { |
ca6f7224 CH |
4582 | skb = buffer_info->skb; |
4583 | if (skb) { | |
a292ca6e JK |
4584 | skb_trim(skb, 0); |
4585 | goto map_skb; | |
4586 | } | |
4587 | ||
ca6f7224 | 4588 | skb = netdev_alloc_skb(netdev, bufsz); |
96838a40 | 4589 | if (unlikely(!skb)) { |
1da177e4 | 4590 | /* Better luck next round */ |
72d64a43 | 4591 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
4592 | break; |
4593 | } | |
4594 | ||
2648345f | 4595 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
4596 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
4597 | struct sk_buff *oldskb = skb; | |
2648345f MC |
4598 | DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes " |
4599 | "at %p\n", bufsz, skb->data); | |
4600 | /* Try again, without freeing the previous */ | |
87f5032e | 4601 | skb = netdev_alloc_skb(netdev, bufsz); |
2648345f | 4602 | /* Failed allocation, critical failure */ |
1da177e4 LT |
4603 | if (!skb) { |
4604 | dev_kfree_skb(oldskb); | |
4605 | break; | |
4606 | } | |
2648345f | 4607 | |
1da177e4 LT |
4608 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
4609 | /* give up */ | |
4610 | dev_kfree_skb(skb); | |
4611 | dev_kfree_skb(oldskb); | |
4612 | break; /* while !buffer_info->skb */ | |
1da177e4 | 4613 | } |
ca6f7224 CH |
4614 | |
4615 | /* Use new allocation */ | |
4616 | dev_kfree_skb(oldskb); | |
1da177e4 | 4617 | } |
1da177e4 LT |
4618 | /* Make buffer alignment 2 beyond a 16 byte boundary |
4619 | * this will result in a 16 byte aligned IP header after | |
4620 | * the 14 byte MAC header is removed | |
4621 | */ | |
4622 | skb_reserve(skb, NET_IP_ALIGN); | |
4623 | ||
1da177e4 LT |
4624 | buffer_info->skb = skb; |
4625 | buffer_info->length = adapter->rx_buffer_len; | |
a292ca6e | 4626 | map_skb: |
1da177e4 LT |
4627 | buffer_info->dma = pci_map_single(pdev, |
4628 | skb->data, | |
4629 | adapter->rx_buffer_len, | |
4630 | PCI_DMA_FROMDEVICE); | |
4631 | ||
2648345f MC |
4632 | /* Fix for errata 23, can't cross 64kB boundary */ |
4633 | if (!e1000_check_64k_bound(adapter, | |
4634 | (void *)(unsigned long)buffer_info->dma, | |
4635 | adapter->rx_buffer_len)) { | |
4636 | DPRINTK(RX_ERR, ERR, | |
4637 | "dma align check failed: %u bytes at %p\n", | |
4638 | adapter->rx_buffer_len, | |
4639 | (void *)(unsigned long)buffer_info->dma); | |
1da177e4 LT |
4640 | dev_kfree_skb(skb); |
4641 | buffer_info->skb = NULL; | |
4642 | ||
2648345f | 4643 | pci_unmap_single(pdev, buffer_info->dma, |
1da177e4 LT |
4644 | adapter->rx_buffer_len, |
4645 | PCI_DMA_FROMDEVICE); | |
4646 | ||
4647 | break; /* while !buffer_info->skb */ | |
4648 | } | |
1da177e4 LT |
4649 | rx_desc = E1000_RX_DESC(*rx_ring, i); |
4650 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
4651 | ||
96838a40 JB |
4652 | if (unlikely(++i == rx_ring->count)) |
4653 | i = 0; | |
1da177e4 LT |
4654 | buffer_info = &rx_ring->buffer_info[i]; |
4655 | } | |
4656 | ||
b92ff8ee JB |
4657 | if (likely(rx_ring->next_to_use != i)) { |
4658 | rx_ring->next_to_use = i; | |
4659 | if (unlikely(i-- == 0)) | |
4660 | i = (rx_ring->count - 1); | |
4661 | ||
4662 | /* Force memory writes to complete before letting h/w | |
4663 | * know there are new descriptors to fetch. (Only | |
4664 | * applicable for weak-ordered memory model archs, | |
4665 | * such as IA-64). */ | |
4666 | wmb(); | |
4667 | writel(i, adapter->hw.hw_addr + rx_ring->rdt); | |
4668 | } | |
1da177e4 LT |
4669 | } |
4670 | ||
2d7edb92 MC |
4671 | /** |
4672 | * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split | |
4673 | * @adapter: address of board private structure | |
4674 | **/ | |
4675 | ||
4676 | static void | |
581d708e | 4677 | e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, |
72d64a43 JK |
4678 | struct e1000_rx_ring *rx_ring, |
4679 | int cleaned_count) | |
2d7edb92 | 4680 | { |
2d7edb92 MC |
4681 | struct net_device *netdev = adapter->netdev; |
4682 | struct pci_dev *pdev = adapter->pdev; | |
4683 | union e1000_rx_desc_packet_split *rx_desc; | |
4684 | struct e1000_buffer *buffer_info; | |
4685 | struct e1000_ps_page *ps_page; | |
4686 | struct e1000_ps_page_dma *ps_page_dma; | |
4687 | struct sk_buff *skb; | |
4688 | unsigned int i, j; | |
4689 | ||
4690 | i = rx_ring->next_to_use; | |
4691 | buffer_info = &rx_ring->buffer_info[i]; | |
4692 | ps_page = &rx_ring->ps_page[i]; | |
4693 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
4694 | ||
72d64a43 | 4695 | while (cleaned_count--) { |
2d7edb92 MC |
4696 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
4697 | ||
96838a40 | 4698 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
e4c811c9 MC |
4699 | if (j < adapter->rx_ps_pages) { |
4700 | if (likely(!ps_page->ps_page[j])) { | |
4701 | ps_page->ps_page[j] = | |
4702 | alloc_page(GFP_ATOMIC); | |
b92ff8ee JB |
4703 | if (unlikely(!ps_page->ps_page[j])) { |
4704 | adapter->alloc_rx_buff_failed++; | |
e4c811c9 | 4705 | goto no_buffers; |
b92ff8ee | 4706 | } |
e4c811c9 MC |
4707 | ps_page_dma->ps_page_dma[j] = |
4708 | pci_map_page(pdev, | |
4709 | ps_page->ps_page[j], | |
4710 | 0, PAGE_SIZE, | |
4711 | PCI_DMA_FROMDEVICE); | |
4712 | } | |
4713 | /* Refresh the desc even if buffer_addrs didn't | |
96838a40 | 4714 | * change because each write-back erases |
e4c811c9 MC |
4715 | * this info. |
4716 | */ | |
4717 | rx_desc->read.buffer_addr[j+1] = | |
4718 | cpu_to_le64(ps_page_dma->ps_page_dma[j]); | |
4719 | } else | |
3e18826c | 4720 | rx_desc->read.buffer_addr[j+1] = ~cpu_to_le64(0); |
2d7edb92 MC |
4721 | } |
4722 | ||
87f5032e | 4723 | skb = netdev_alloc_skb(netdev, |
90fb5135 | 4724 | adapter->rx_ps_bsize0 + NET_IP_ALIGN); |
2d7edb92 | 4725 | |
b92ff8ee JB |
4726 | if (unlikely(!skb)) { |
4727 | adapter->alloc_rx_buff_failed++; | |
2d7edb92 | 4728 | break; |
b92ff8ee | 4729 | } |
2d7edb92 MC |
4730 | |
4731 | /* Make buffer alignment 2 beyond a 16 byte boundary | |
4732 | * this will result in a 16 byte aligned IP header after | |
4733 | * the 14 byte MAC header is removed | |
4734 | */ | |
4735 | skb_reserve(skb, NET_IP_ALIGN); | |
4736 | ||
2d7edb92 MC |
4737 | buffer_info->skb = skb; |
4738 | buffer_info->length = adapter->rx_ps_bsize0; | |
4739 | buffer_info->dma = pci_map_single(pdev, skb->data, | |
4740 | adapter->rx_ps_bsize0, | |
4741 | PCI_DMA_FROMDEVICE); | |
4742 | ||
4743 | rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); | |
4744 | ||
96838a40 | 4745 | if (unlikely(++i == rx_ring->count)) i = 0; |
2d7edb92 MC |
4746 | buffer_info = &rx_ring->buffer_info[i]; |
4747 | ps_page = &rx_ring->ps_page[i]; | |
4748 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
4749 | } | |
4750 | ||
4751 | no_buffers: | |
b92ff8ee JB |
4752 | if (likely(rx_ring->next_to_use != i)) { |
4753 | rx_ring->next_to_use = i; | |
4754 | if (unlikely(i-- == 0)) i = (rx_ring->count - 1); | |
4755 | ||
4756 | /* Force memory writes to complete before letting h/w | |
4757 | * know there are new descriptors to fetch. (Only | |
4758 | * applicable for weak-ordered memory model archs, | |
4759 | * such as IA-64). */ | |
4760 | wmb(); | |
4761 | /* Hardware increments by 16 bytes, but packet split | |
4762 | * descriptors are 32 bytes...so we increment tail | |
4763 | * twice as much. | |
4764 | */ | |
4765 | writel(i<<1, adapter->hw.hw_addr + rx_ring->rdt); | |
4766 | } | |
2d7edb92 MC |
4767 | } |
4768 | ||
1da177e4 LT |
4769 | /** |
4770 | * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. | |
4771 | * @adapter: | |
4772 | **/ | |
4773 | ||
4774 | static void | |
4775 | e1000_smartspeed(struct e1000_adapter *adapter) | |
4776 | { | |
4777 | uint16_t phy_status; | |
4778 | uint16_t phy_ctrl; | |
4779 | ||
96838a40 | 4780 | if ((adapter->hw.phy_type != e1000_phy_igp) || !adapter->hw.autoneg || |
1da177e4 LT |
4781 | !(adapter->hw.autoneg_advertised & ADVERTISE_1000_FULL)) |
4782 | return; | |
4783 | ||
96838a40 | 4784 | if (adapter->smartspeed == 0) { |
1da177e4 LT |
4785 | /* If Master/Slave config fault is asserted twice, |
4786 | * we assume back-to-back */ | |
4787 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); | |
96838a40 | 4788 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1da177e4 | 4789 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); |
96838a40 | 4790 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1da177e4 | 4791 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); |
96838a40 | 4792 | if (phy_ctrl & CR_1000T_MS_ENABLE) { |
1da177e4 LT |
4793 | phy_ctrl &= ~CR_1000T_MS_ENABLE; |
4794 | e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, | |
4795 | phy_ctrl); | |
4796 | adapter->smartspeed++; | |
96838a40 | 4797 | if (!e1000_phy_setup_autoneg(&adapter->hw) && |
1da177e4 LT |
4798 | !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, |
4799 | &phy_ctrl)) { | |
4800 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
4801 | MII_CR_RESTART_AUTO_NEG); | |
4802 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, | |
4803 | phy_ctrl); | |
4804 | } | |
4805 | } | |
4806 | return; | |
96838a40 | 4807 | } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { |
1da177e4 LT |
4808 | /* If still no link, perhaps using 2/3 pair cable */ |
4809 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); | |
4810 | phy_ctrl |= CR_1000T_MS_ENABLE; | |
4811 | e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_ctrl); | |
96838a40 | 4812 | if (!e1000_phy_setup_autoneg(&adapter->hw) && |
1da177e4 LT |
4813 | !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_ctrl)) { |
4814 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
4815 | MII_CR_RESTART_AUTO_NEG); | |
4816 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, phy_ctrl); | |
4817 | } | |
4818 | } | |
4819 | /* Restart process after E1000_SMARTSPEED_MAX iterations */ | |
96838a40 | 4820 | if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX) |
1da177e4 LT |
4821 | adapter->smartspeed = 0; |
4822 | } | |
4823 | ||
4824 | /** | |
4825 | * e1000_ioctl - | |
4826 | * @netdev: | |
4827 | * @ifreq: | |
4828 | * @cmd: | |
4829 | **/ | |
4830 | ||
4831 | static int | |
4832 | e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
4833 | { | |
4834 | switch (cmd) { | |
4835 | case SIOCGMIIPHY: | |
4836 | case SIOCGMIIREG: | |
4837 | case SIOCSMIIREG: | |
4838 | return e1000_mii_ioctl(netdev, ifr, cmd); | |
4839 | default: | |
4840 | return -EOPNOTSUPP; | |
4841 | } | |
4842 | } | |
4843 | ||
4844 | /** | |
4845 | * e1000_mii_ioctl - | |
4846 | * @netdev: | |
4847 | * @ifreq: | |
4848 | * @cmd: | |
4849 | **/ | |
4850 | ||
4851 | static int | |
4852 | e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
4853 | { | |
60490fe0 | 4854 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
4855 | struct mii_ioctl_data *data = if_mii(ifr); |
4856 | int retval; | |
4857 | uint16_t mii_reg; | |
4858 | uint16_t spddplx; | |
97876fc6 | 4859 | unsigned long flags; |
1da177e4 | 4860 | |
96838a40 | 4861 | if (adapter->hw.media_type != e1000_media_type_copper) |
1da177e4 LT |
4862 | return -EOPNOTSUPP; |
4863 | ||
4864 | switch (cmd) { | |
4865 | case SIOCGMIIPHY: | |
4866 | data->phy_id = adapter->hw.phy_addr; | |
4867 | break; | |
4868 | case SIOCGMIIREG: | |
96838a40 | 4869 | if (!capable(CAP_NET_ADMIN)) |
1da177e4 | 4870 | return -EPERM; |
97876fc6 | 4871 | spin_lock_irqsave(&adapter->stats_lock, flags); |
96838a40 | 4872 | if (e1000_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
97876fc6 MC |
4873 | &data->val_out)) { |
4874 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4875 | return -EIO; |
97876fc6 MC |
4876 | } |
4877 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 LT |
4878 | break; |
4879 | case SIOCSMIIREG: | |
96838a40 | 4880 | if (!capable(CAP_NET_ADMIN)) |
1da177e4 | 4881 | return -EPERM; |
96838a40 | 4882 | if (data->reg_num & ~(0x1F)) |
1da177e4 LT |
4883 | return -EFAULT; |
4884 | mii_reg = data->val_in; | |
97876fc6 | 4885 | spin_lock_irqsave(&adapter->stats_lock, flags); |
96838a40 | 4886 | if (e1000_write_phy_reg(&adapter->hw, data->reg_num, |
97876fc6 MC |
4887 | mii_reg)) { |
4888 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4889 | return -EIO; |
97876fc6 | 4890 | } |
f0163ac4 | 4891 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
dc86d32a | 4892 | if (adapter->hw.media_type == e1000_media_type_copper) { |
1da177e4 LT |
4893 | switch (data->reg_num) { |
4894 | case PHY_CTRL: | |
96838a40 | 4895 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4896 | break; |
96838a40 | 4897 | if (mii_reg & MII_CR_AUTO_NEG_EN) { |
1da177e4 LT |
4898 | adapter->hw.autoneg = 1; |
4899 | adapter->hw.autoneg_advertised = 0x2F; | |
4900 | } else { | |
4901 | if (mii_reg & 0x40) | |
4902 | spddplx = SPEED_1000; | |
4903 | else if (mii_reg & 0x2000) | |
4904 | spddplx = SPEED_100; | |
4905 | else | |
4906 | spddplx = SPEED_10; | |
4907 | spddplx += (mii_reg & 0x100) | |
cb764326 JK |
4908 | ? DUPLEX_FULL : |
4909 | DUPLEX_HALF; | |
1da177e4 LT |
4910 | retval = e1000_set_spd_dplx(adapter, |
4911 | spddplx); | |
f0163ac4 | 4912 | if (retval) |
1da177e4 LT |
4913 | return retval; |
4914 | } | |
2db10a08 AK |
4915 | if (netif_running(adapter->netdev)) |
4916 | e1000_reinit_locked(adapter); | |
4917 | else | |
1da177e4 LT |
4918 | e1000_reset(adapter); |
4919 | break; | |
4920 | case M88E1000_PHY_SPEC_CTRL: | |
4921 | case M88E1000_EXT_PHY_SPEC_CTRL: | |
f0163ac4 | 4922 | if (e1000_phy_reset(&adapter->hw)) |
1da177e4 LT |
4923 | return -EIO; |
4924 | break; | |
4925 | } | |
4926 | } else { | |
4927 | switch (data->reg_num) { | |
4928 | case PHY_CTRL: | |
96838a40 | 4929 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4930 | break; |
2db10a08 AK |
4931 | if (netif_running(adapter->netdev)) |
4932 | e1000_reinit_locked(adapter); | |
4933 | else | |
1da177e4 LT |
4934 | e1000_reset(adapter); |
4935 | break; | |
4936 | } | |
4937 | } | |
4938 | break; | |
4939 | default: | |
4940 | return -EOPNOTSUPP; | |
4941 | } | |
4942 | return E1000_SUCCESS; | |
4943 | } | |
4944 | ||
4945 | void | |
4946 | e1000_pci_set_mwi(struct e1000_hw *hw) | |
4947 | { | |
4948 | struct e1000_adapter *adapter = hw->back; | |
2648345f | 4949 | int ret_val = pci_set_mwi(adapter->pdev); |
1da177e4 | 4950 | |
96838a40 | 4951 | if (ret_val) |
2648345f | 4952 | DPRINTK(PROBE, ERR, "Error in setting MWI\n"); |
1da177e4 LT |
4953 | } |
4954 | ||
4955 | void | |
4956 | e1000_pci_clear_mwi(struct e1000_hw *hw) | |
4957 | { | |
4958 | struct e1000_adapter *adapter = hw->back; | |
4959 | ||
4960 | pci_clear_mwi(adapter->pdev); | |
4961 | } | |
4962 | ||
007755eb PO |
4963 | int |
4964 | e1000_pcix_get_mmrbc(struct e1000_hw *hw) | |
4965 | { | |
4966 | struct e1000_adapter *adapter = hw->back; | |
4967 | return pcix_get_mmrbc(adapter->pdev); | |
4968 | } | |
4969 | ||
4970 | void | |
4971 | e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc) | |
4972 | { | |
4973 | struct e1000_adapter *adapter = hw->back; | |
4974 | pcix_set_mmrbc(adapter->pdev, mmrbc); | |
4975 | } | |
4976 | ||
caeccb68 JK |
4977 | int32_t |
4978 | e1000_read_pcie_cap_reg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) | |
4979 | { | |
4980 | struct e1000_adapter *adapter = hw->back; | |
4981 | uint16_t cap_offset; | |
4982 | ||
4983 | cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP); | |
4984 | if (!cap_offset) | |
4985 | return -E1000_ERR_CONFIG; | |
4986 | ||
4987 | pci_read_config_word(adapter->pdev, cap_offset + reg, value); | |
4988 | ||
4989 | return E1000_SUCCESS; | |
4990 | } | |
4991 | ||
1da177e4 LT |
4992 | void |
4993 | e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value) | |
4994 | { | |
4995 | outl(value, port); | |
4996 | } | |
4997 | ||
4998 | static void | |
4999 | e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) | |
5000 | { | |
60490fe0 | 5001 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
5002 | uint32_t ctrl, rctl; |
5003 | ||
5004 | e1000_irq_disable(adapter); | |
5005 | adapter->vlgrp = grp; | |
5006 | ||
96838a40 | 5007 | if (grp) { |
1da177e4 LT |
5008 | /* enable VLAN tag insert/strip */ |
5009 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
5010 | ctrl |= E1000_CTRL_VME; | |
5011 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
5012 | ||
cd94dd0b | 5013 | if (adapter->hw.mac_type != e1000_ich8lan) { |
90fb5135 AK |
5014 | /* enable VLAN receive filtering */ |
5015 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
5016 | rctl |= E1000_RCTL_VFE; | |
5017 | rctl &= ~E1000_RCTL_CFIEN; | |
5018 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
5019 | e1000_update_mng_vlan(adapter); | |
cd94dd0b | 5020 | } |
1da177e4 LT |
5021 | } else { |
5022 | /* disable VLAN tag insert/strip */ | |
5023 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
5024 | ctrl &= ~E1000_CTRL_VME; | |
5025 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
5026 | ||
cd94dd0b | 5027 | if (adapter->hw.mac_type != e1000_ich8lan) { |
90fb5135 AK |
5028 | /* disable VLAN filtering */ |
5029 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
5030 | rctl &= ~E1000_RCTL_VFE; | |
5031 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
5032 | if (adapter->mng_vlan_id != | |
5033 | (uint16_t)E1000_MNG_VLAN_NONE) { | |
5034 | e1000_vlan_rx_kill_vid(netdev, | |
5035 | adapter->mng_vlan_id); | |
5036 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
5037 | } | |
cd94dd0b | 5038 | } |
1da177e4 LT |
5039 | } |
5040 | ||
5041 | e1000_irq_enable(adapter); | |
5042 | } | |
5043 | ||
5044 | static void | |
5045 | e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid) | |
5046 | { | |
60490fe0 | 5047 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 5048 | uint32_t vfta, index; |
96838a40 JB |
5049 | |
5050 | if ((adapter->hw.mng_cookie.status & | |
5051 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && | |
5052 | (vid == adapter->mng_vlan_id)) | |
2d7edb92 | 5053 | return; |
1da177e4 LT |
5054 | /* add VID to filter table */ |
5055 | index = (vid >> 5) & 0x7F; | |
5056 | vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
5057 | vfta |= (1 << (vid & 0x1F)); | |
5058 | e1000_write_vfta(&adapter->hw, index, vfta); | |
5059 | } | |
5060 | ||
5061 | static void | |
5062 | e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid) | |
5063 | { | |
60490fe0 | 5064 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
5065 | uint32_t vfta, index; |
5066 | ||
5067 | e1000_irq_disable(adapter); | |
5c15bdec | 5068 | vlan_group_set_device(adapter->vlgrp, vid, NULL); |
1da177e4 LT |
5069 | e1000_irq_enable(adapter); |
5070 | ||
96838a40 JB |
5071 | if ((adapter->hw.mng_cookie.status & |
5072 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && | |
ff147013 JK |
5073 | (vid == adapter->mng_vlan_id)) { |
5074 | /* release control to f/w */ | |
5075 | e1000_release_hw_control(adapter); | |
2d7edb92 | 5076 | return; |
ff147013 JK |
5077 | } |
5078 | ||
1da177e4 LT |
5079 | /* remove VID from filter table */ |
5080 | index = (vid >> 5) & 0x7F; | |
5081 | vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
5082 | vfta &= ~(1 << (vid & 0x1F)); | |
5083 | e1000_write_vfta(&adapter->hw, index, vfta); | |
5084 | } | |
5085 | ||
5086 | static void | |
5087 | e1000_restore_vlan(struct e1000_adapter *adapter) | |
5088 | { | |
5089 | e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
5090 | ||
96838a40 | 5091 | if (adapter->vlgrp) { |
1da177e4 | 5092 | uint16_t vid; |
96838a40 | 5093 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { |
5c15bdec | 5094 | if (!vlan_group_get_device(adapter->vlgrp, vid)) |
1da177e4 LT |
5095 | continue; |
5096 | e1000_vlan_rx_add_vid(adapter->netdev, vid); | |
5097 | } | |
5098 | } | |
5099 | } | |
5100 | ||
5101 | int | |
5102 | e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx) | |
5103 | { | |
5104 | adapter->hw.autoneg = 0; | |
5105 | ||
6921368f | 5106 | /* Fiber NICs only allow 1000 gbps Full duplex */ |
96838a40 | 5107 | if ((adapter->hw.media_type == e1000_media_type_fiber) && |
6921368f MC |
5108 | spddplx != (SPEED_1000 + DUPLEX_FULL)) { |
5109 | DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); | |
5110 | return -EINVAL; | |
5111 | } | |
5112 | ||
96838a40 | 5113 | switch (spddplx) { |
1da177e4 LT |
5114 | case SPEED_10 + DUPLEX_HALF: |
5115 | adapter->hw.forced_speed_duplex = e1000_10_half; | |
5116 | break; | |
5117 | case SPEED_10 + DUPLEX_FULL: | |
5118 | adapter->hw.forced_speed_duplex = e1000_10_full; | |
5119 | break; | |
5120 | case SPEED_100 + DUPLEX_HALF: | |
5121 | adapter->hw.forced_speed_duplex = e1000_100_half; | |
5122 | break; | |
5123 | case SPEED_100 + DUPLEX_FULL: | |
5124 | adapter->hw.forced_speed_duplex = e1000_100_full; | |
5125 | break; | |
5126 | case SPEED_1000 + DUPLEX_FULL: | |
5127 | adapter->hw.autoneg = 1; | |
5128 | adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL; | |
5129 | break; | |
5130 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ | |
5131 | default: | |
2648345f | 5132 | DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); |
1da177e4 LT |
5133 | return -EINVAL; |
5134 | } | |
5135 | return 0; | |
5136 | } | |
5137 | ||
1da177e4 | 5138 | static int |
829ca9a3 | 5139 | e1000_suspend(struct pci_dev *pdev, pm_message_t state) |
1da177e4 LT |
5140 | { |
5141 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 5142 | struct e1000_adapter *adapter = netdev_priv(netdev); |
0fccd0e9 | 5143 | uint32_t ctrl, ctrl_ext, rctl, status; |
1da177e4 | 5144 | uint32_t wufc = adapter->wol; |
6fdfef16 | 5145 | #ifdef CONFIG_PM |
240b1710 | 5146 | int retval = 0; |
6fdfef16 | 5147 | #endif |
1da177e4 LT |
5148 | |
5149 | netif_device_detach(netdev); | |
5150 | ||
2db10a08 AK |
5151 | if (netif_running(netdev)) { |
5152 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); | |
1da177e4 | 5153 | e1000_down(adapter); |
2db10a08 | 5154 | } |
1da177e4 | 5155 | |
2f82665f | 5156 | #ifdef CONFIG_PM |
1d33e9c6 | 5157 | retval = pci_save_state(pdev); |
2f82665f JB |
5158 | if (retval) |
5159 | return retval; | |
5160 | #endif | |
5161 | ||
1da177e4 | 5162 | status = E1000_READ_REG(&adapter->hw, STATUS); |
96838a40 | 5163 | if (status & E1000_STATUS_LU) |
1da177e4 LT |
5164 | wufc &= ~E1000_WUFC_LNKC; |
5165 | ||
96838a40 | 5166 | if (wufc) { |
1da177e4 | 5167 | e1000_setup_rctl(adapter); |
db0ce50d | 5168 | e1000_set_rx_mode(netdev); |
1da177e4 LT |
5169 | |
5170 | /* turn on all-multi mode if wake on multicast is enabled */ | |
120cd576 | 5171 | if (wufc & E1000_WUFC_MC) { |
1da177e4 LT |
5172 | rctl = E1000_READ_REG(&adapter->hw, RCTL); |
5173 | rctl |= E1000_RCTL_MPE; | |
5174 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
5175 | } | |
5176 | ||
96838a40 | 5177 | if (adapter->hw.mac_type >= e1000_82540) { |
1da177e4 LT |
5178 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); |
5179 | /* advertise wake from D3Cold */ | |
5180 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
5181 | /* phy power management enable */ | |
5182 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
5183 | ctrl |= E1000_CTRL_ADVD3WUC | | |
5184 | E1000_CTRL_EN_PHY_PWR_MGMT; | |
5185 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
5186 | } | |
5187 | ||
96838a40 | 5188 | if (adapter->hw.media_type == e1000_media_type_fiber || |
1da177e4 LT |
5189 | adapter->hw.media_type == e1000_media_type_internal_serdes) { |
5190 | /* keep the laser running in D3 */ | |
5191 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); | |
5192 | ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; | |
5193 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, ctrl_ext); | |
5194 | } | |
5195 | ||
2d7edb92 MC |
5196 | /* Allow time for pending master requests to run */ |
5197 | e1000_disable_pciex_master(&adapter->hw); | |
5198 | ||
1da177e4 LT |
5199 | E1000_WRITE_REG(&adapter->hw, WUC, E1000_WUC_PME_EN); |
5200 | E1000_WRITE_REG(&adapter->hw, WUFC, wufc); | |
d0e027db AK |
5201 | pci_enable_wake(pdev, PCI_D3hot, 1); |
5202 | pci_enable_wake(pdev, PCI_D3cold, 1); | |
1da177e4 LT |
5203 | } else { |
5204 | E1000_WRITE_REG(&adapter->hw, WUC, 0); | |
5205 | E1000_WRITE_REG(&adapter->hw, WUFC, 0); | |
d0e027db AK |
5206 | pci_enable_wake(pdev, PCI_D3hot, 0); |
5207 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
1da177e4 LT |
5208 | } |
5209 | ||
0fccd0e9 JG |
5210 | e1000_release_manageability(adapter); |
5211 | ||
5212 | /* make sure adapter isn't asleep if manageability is enabled */ | |
5213 | if (adapter->en_mng_pt) { | |
5214 | pci_enable_wake(pdev, PCI_D3hot, 1); | |
5215 | pci_enable_wake(pdev, PCI_D3cold, 1); | |
1da177e4 LT |
5216 | } |
5217 | ||
cd94dd0b AK |
5218 | if (adapter->hw.phy_type == e1000_phy_igp_3) |
5219 | e1000_phy_powerdown_workaround(&adapter->hw); | |
5220 | ||
edd106fc AK |
5221 | if (netif_running(netdev)) |
5222 | e1000_free_irq(adapter); | |
5223 | ||
b55ccb35 JK |
5224 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
5225 | * would have already happened in close and is redundant. */ | |
5226 | e1000_release_hw_control(adapter); | |
2d7edb92 | 5227 | |
1da177e4 | 5228 | pci_disable_device(pdev); |
240b1710 | 5229 | |
d0e027db | 5230 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); |
1da177e4 LT |
5231 | |
5232 | return 0; | |
5233 | } | |
5234 | ||
2f82665f | 5235 | #ifdef CONFIG_PM |
1da177e4 LT |
5236 | static int |
5237 | e1000_resume(struct pci_dev *pdev) | |
5238 | { | |
5239 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 5240 | struct e1000_adapter *adapter = netdev_priv(netdev); |
0fccd0e9 | 5241 | uint32_t err; |
1da177e4 | 5242 | |
d0e027db | 5243 | pci_set_power_state(pdev, PCI_D0); |
1d33e9c6 | 5244 | pci_restore_state(pdev); |
3d1dd8cb AK |
5245 | if ((err = pci_enable_device(pdev))) { |
5246 | printk(KERN_ERR "e1000: Cannot enable PCI device from suspend\n"); | |
5247 | return err; | |
5248 | } | |
a4cb847d | 5249 | pci_set_master(pdev); |
1da177e4 | 5250 | |
d0e027db AK |
5251 | pci_enable_wake(pdev, PCI_D3hot, 0); |
5252 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
1da177e4 | 5253 | |
edd106fc AK |
5254 | if (netif_running(netdev) && (err = e1000_request_irq(adapter))) |
5255 | return err; | |
5256 | ||
5257 | e1000_power_up_phy(adapter); | |
1da177e4 LT |
5258 | e1000_reset(adapter); |
5259 | E1000_WRITE_REG(&adapter->hw, WUS, ~0); | |
5260 | ||
0fccd0e9 JG |
5261 | e1000_init_manageability(adapter); |
5262 | ||
96838a40 | 5263 | if (netif_running(netdev)) |
1da177e4 LT |
5264 | e1000_up(adapter); |
5265 | ||
5266 | netif_device_attach(netdev); | |
5267 | ||
b55ccb35 JK |
5268 | /* If the controller is 82573 and f/w is AMT, do not set |
5269 | * DRV_LOAD until the interface is up. For all other cases, | |
5270 | * let the f/w know that the h/w is now under the control | |
5271 | * of the driver. */ | |
5272 | if (adapter->hw.mac_type != e1000_82573 || | |
5273 | !e1000_check_mng_mode(&adapter->hw)) | |
5274 | e1000_get_hw_control(adapter); | |
2d7edb92 | 5275 | |
1da177e4 LT |
5276 | return 0; |
5277 | } | |
5278 | #endif | |
c653e635 AK |
5279 | |
5280 | static void e1000_shutdown(struct pci_dev *pdev) | |
5281 | { | |
5282 | e1000_suspend(pdev, PMSG_SUSPEND); | |
5283 | } | |
5284 | ||
1da177e4 LT |
5285 | #ifdef CONFIG_NET_POLL_CONTROLLER |
5286 | /* | |
5287 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
5288 | * without having to re-enable interrupts. It's not called while | |
5289 | * the interrupt routine is executing. | |
5290 | */ | |
5291 | static void | |
2648345f | 5292 | e1000_netpoll(struct net_device *netdev) |
1da177e4 | 5293 | { |
60490fe0 | 5294 | struct e1000_adapter *adapter = netdev_priv(netdev); |
d3d9e484 | 5295 | |
1da177e4 | 5296 | disable_irq(adapter->pdev->irq); |
7d12e780 | 5297 | e1000_intr(adapter->pdev->irq, netdev); |
c4cfe567 | 5298 | e1000_clean_tx_irq(adapter, adapter->tx_ring); |
e8da8be1 JK |
5299 | #ifndef CONFIG_E1000_NAPI |
5300 | adapter->clean_rx(adapter, adapter->rx_ring); | |
5301 | #endif | |
1da177e4 LT |
5302 | enable_irq(adapter->pdev->irq); |
5303 | } | |
5304 | #endif | |
5305 | ||
9026729b AK |
5306 | /** |
5307 | * e1000_io_error_detected - called when PCI error is detected | |
5308 | * @pdev: Pointer to PCI device | |
5309 | * @state: The current pci conneection state | |
5310 | * | |
5311 | * This function is called after a PCI bus error affecting | |
5312 | * this device has been detected. | |
5313 | */ | |
5314 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state) | |
5315 | { | |
5316 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5317 | struct e1000_adapter *adapter = netdev->priv; | |
5318 | ||
5319 | netif_device_detach(netdev); | |
5320 | ||
5321 | if (netif_running(netdev)) | |
5322 | e1000_down(adapter); | |
72e8d6bb | 5323 | pci_disable_device(pdev); |
9026729b AK |
5324 | |
5325 | /* Request a slot slot reset. */ | |
5326 | return PCI_ERS_RESULT_NEED_RESET; | |
5327 | } | |
5328 | ||
5329 | /** | |
5330 | * e1000_io_slot_reset - called after the pci bus has been reset. | |
5331 | * @pdev: Pointer to PCI device | |
5332 | * | |
5333 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
5334 | * resembles the first-half of the e1000_resume routine. | |
5335 | */ | |
5336 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) | |
5337 | { | |
5338 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5339 | struct e1000_adapter *adapter = netdev->priv; | |
5340 | ||
5341 | if (pci_enable_device(pdev)) { | |
5342 | printk(KERN_ERR "e1000: Cannot re-enable PCI device after reset.\n"); | |
5343 | return PCI_ERS_RESULT_DISCONNECT; | |
5344 | } | |
5345 | pci_set_master(pdev); | |
5346 | ||
dbf38c94 LV |
5347 | pci_enable_wake(pdev, PCI_D3hot, 0); |
5348 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
9026729b | 5349 | |
9026729b AK |
5350 | e1000_reset(adapter); |
5351 | E1000_WRITE_REG(&adapter->hw, WUS, ~0); | |
5352 | ||
5353 | return PCI_ERS_RESULT_RECOVERED; | |
5354 | } | |
5355 | ||
5356 | /** | |
5357 | * e1000_io_resume - called when traffic can start flowing again. | |
5358 | * @pdev: Pointer to PCI device | |
5359 | * | |
5360 | * This callback is called when the error recovery driver tells us that | |
5361 | * its OK to resume normal operation. Implementation resembles the | |
5362 | * second-half of the e1000_resume routine. | |
5363 | */ | |
5364 | static void e1000_io_resume(struct pci_dev *pdev) | |
5365 | { | |
5366 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5367 | struct e1000_adapter *adapter = netdev->priv; | |
0fccd0e9 JG |
5368 | |
5369 | e1000_init_manageability(adapter); | |
9026729b AK |
5370 | |
5371 | if (netif_running(netdev)) { | |
5372 | if (e1000_up(adapter)) { | |
5373 | printk("e1000: can't bring device back up after reset\n"); | |
5374 | return; | |
5375 | } | |
5376 | } | |
5377 | ||
5378 | netif_device_attach(netdev); | |
5379 | ||
0fccd0e9 JG |
5380 | /* If the controller is 82573 and f/w is AMT, do not set |
5381 | * DRV_LOAD until the interface is up. For all other cases, | |
5382 | * let the f/w know that the h/w is now under the control | |
5383 | * of the driver. */ | |
5384 | if (adapter->hw.mac_type != e1000_82573 || | |
5385 | !e1000_check_mng_mode(&adapter->hw)) | |
5386 | e1000_get_hw_control(adapter); | |
9026729b | 5387 | |
9026729b AK |
5388 | } |
5389 | ||
1da177e4 | 5390 | /* e1000_main.c */ |