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Commit | Line | Data |
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1da177e4 LT |
1 | /******************************************************************************* |
2 | ||
0abb6eb1 AK |
3 | Intel PRO/1000 Linux driver |
4 | Copyright(c) 1999 - 2006 Intel Corporation. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify it | |
7 | under the terms and conditions of the GNU General Public License, | |
8 | version 2, as published by the Free Software Foundation. | |
9 | ||
10 | This program is distributed in the hope it will be useful, but WITHOUT | |
11 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
1da177e4 | 13 | more details. |
0abb6eb1 | 14 | |
1da177e4 | 15 | You should have received a copy of the GNU General Public License along with |
0abb6eb1 AK |
16 | this program; if not, write to the Free Software Foundation, Inc., |
17 | 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | ||
19 | The full GNU General Public License is included in this distribution in | |
20 | the file called "COPYING". | |
21 | ||
1da177e4 LT |
22 | Contact Information: |
23 | Linux NICS <linux.nics@intel.com> | |
3d41e30a | 24 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
1da177e4 LT |
25 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
26 | ||
27 | *******************************************************************************/ | |
28 | ||
29 | #include "e1000.h" | |
d0bb53e1 | 30 | #include <net/ip6_checksum.h> |
5377a416 | 31 | #include <linux/io.h> |
70c71606 | 32 | #include <linux/prefetch.h> |
5622e404 JP |
33 | #include <linux/bitops.h> |
34 | #include <linux/if_vlan.h> | |
5377a416 DB |
35 | |
36 | /* Intel Media SOC GbE MDIO physical base address */ | |
37 | static unsigned long ce4100_gbe_mdio_base_phy; | |
38 | /* Intel Media SOC GbE MDIO virtual base address */ | |
39 | void __iomem *ce4100_gbe_mdio_base_virt; | |
1da177e4 | 40 | |
1da177e4 | 41 | char e1000_driver_name[] = "e1000"; |
3ad2cc67 | 42 | static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver"; |
ab08853f | 43 | #define DRV_VERSION "7.3.21-k8-NAPI" |
abec42a4 SH |
44 | const char e1000_driver_version[] = DRV_VERSION; |
45 | static const char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation."; | |
1da177e4 LT |
46 | |
47 | /* e1000_pci_tbl - PCI Device ID Table | |
48 | * | |
49 | * Last entry must be all 0s | |
50 | * | |
51 | * Macro expands to... | |
52 | * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)} | |
53 | */ | |
a3aa1884 | 54 | static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = { |
1da177e4 LT |
55 | INTEL_E1000_ETHERNET_DEVICE(0x1000), |
56 | INTEL_E1000_ETHERNET_DEVICE(0x1001), | |
57 | INTEL_E1000_ETHERNET_DEVICE(0x1004), | |
58 | INTEL_E1000_ETHERNET_DEVICE(0x1008), | |
59 | INTEL_E1000_ETHERNET_DEVICE(0x1009), | |
60 | INTEL_E1000_ETHERNET_DEVICE(0x100C), | |
61 | INTEL_E1000_ETHERNET_DEVICE(0x100D), | |
62 | INTEL_E1000_ETHERNET_DEVICE(0x100E), | |
63 | INTEL_E1000_ETHERNET_DEVICE(0x100F), | |
64 | INTEL_E1000_ETHERNET_DEVICE(0x1010), | |
65 | INTEL_E1000_ETHERNET_DEVICE(0x1011), | |
66 | INTEL_E1000_ETHERNET_DEVICE(0x1012), | |
67 | INTEL_E1000_ETHERNET_DEVICE(0x1013), | |
68 | INTEL_E1000_ETHERNET_DEVICE(0x1014), | |
69 | INTEL_E1000_ETHERNET_DEVICE(0x1015), | |
70 | INTEL_E1000_ETHERNET_DEVICE(0x1016), | |
71 | INTEL_E1000_ETHERNET_DEVICE(0x1017), | |
72 | INTEL_E1000_ETHERNET_DEVICE(0x1018), | |
73 | INTEL_E1000_ETHERNET_DEVICE(0x1019), | |
2648345f | 74 | INTEL_E1000_ETHERNET_DEVICE(0x101A), |
1da177e4 LT |
75 | INTEL_E1000_ETHERNET_DEVICE(0x101D), |
76 | INTEL_E1000_ETHERNET_DEVICE(0x101E), | |
77 | INTEL_E1000_ETHERNET_DEVICE(0x1026), | |
78 | INTEL_E1000_ETHERNET_DEVICE(0x1027), | |
79 | INTEL_E1000_ETHERNET_DEVICE(0x1028), | |
80 | INTEL_E1000_ETHERNET_DEVICE(0x1075), | |
81 | INTEL_E1000_ETHERNET_DEVICE(0x1076), | |
82 | INTEL_E1000_ETHERNET_DEVICE(0x1077), | |
83 | INTEL_E1000_ETHERNET_DEVICE(0x1078), | |
84 | INTEL_E1000_ETHERNET_DEVICE(0x1079), | |
85 | INTEL_E1000_ETHERNET_DEVICE(0x107A), | |
86 | INTEL_E1000_ETHERNET_DEVICE(0x107B), | |
87 | INTEL_E1000_ETHERNET_DEVICE(0x107C), | |
88 | INTEL_E1000_ETHERNET_DEVICE(0x108A), | |
b7ee49db | 89 | INTEL_E1000_ETHERNET_DEVICE(0x1099), |
b7ee49db | 90 | INTEL_E1000_ETHERNET_DEVICE(0x10B5), |
5377a416 | 91 | INTEL_E1000_ETHERNET_DEVICE(0x2E6E), |
1da177e4 LT |
92 | /* required last entry */ |
93 | {0,} | |
94 | }; | |
95 | ||
96 | MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); | |
97 | ||
35574764 NN |
98 | int e1000_up(struct e1000_adapter *adapter); |
99 | void e1000_down(struct e1000_adapter *adapter); | |
100 | void e1000_reinit_locked(struct e1000_adapter *adapter); | |
101 | void e1000_reset(struct e1000_adapter *adapter); | |
35574764 NN |
102 | int e1000_setup_all_tx_resources(struct e1000_adapter *adapter); |
103 | int e1000_setup_all_rx_resources(struct e1000_adapter *adapter); | |
104 | void e1000_free_all_tx_resources(struct e1000_adapter *adapter); | |
105 | void e1000_free_all_rx_resources(struct e1000_adapter *adapter); | |
3ad2cc67 | 106 | static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
35574764 | 107 | struct e1000_tx_ring *txdr); |
3ad2cc67 | 108 | static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
35574764 | 109 | struct e1000_rx_ring *rxdr); |
3ad2cc67 | 110 | static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
35574764 | 111 | struct e1000_tx_ring *tx_ring); |
3ad2cc67 | 112 | static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
35574764 NN |
113 | struct e1000_rx_ring *rx_ring); |
114 | void e1000_update_stats(struct e1000_adapter *adapter); | |
1da177e4 LT |
115 | |
116 | static int e1000_init_module(void); | |
117 | static void e1000_exit_module(void); | |
118 | static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent); | |
119 | static void __devexit e1000_remove(struct pci_dev *pdev); | |
581d708e | 120 | static int e1000_alloc_queues(struct e1000_adapter *adapter); |
1da177e4 LT |
121 | static int e1000_sw_init(struct e1000_adapter *adapter); |
122 | static int e1000_open(struct net_device *netdev); | |
123 | static int e1000_close(struct net_device *netdev); | |
124 | static void e1000_configure_tx(struct e1000_adapter *adapter); | |
125 | static void e1000_configure_rx(struct e1000_adapter *adapter); | |
126 | static void e1000_setup_rctl(struct e1000_adapter *adapter); | |
581d708e MC |
127 | static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter); |
128 | static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter); | |
129 | static void e1000_clean_tx_ring(struct e1000_adapter *adapter, | |
130 | struct e1000_tx_ring *tx_ring); | |
131 | static void e1000_clean_rx_ring(struct e1000_adapter *adapter, | |
132 | struct e1000_rx_ring *rx_ring); | |
db0ce50d | 133 | static void e1000_set_rx_mode(struct net_device *netdev); |
5cf42fcd | 134 | static void e1000_update_phy_info_task(struct work_struct *work); |
a4010afe | 135 | static void e1000_watchdog(struct work_struct *work); |
5cf42fcd | 136 | static void e1000_82547_tx_fifo_stall_task(struct work_struct *work); |
3b29a56d SH |
137 | static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
138 | struct net_device *netdev); | |
1da177e4 LT |
139 | static struct net_device_stats * e1000_get_stats(struct net_device *netdev); |
140 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu); | |
141 | static int e1000_set_mac(struct net_device *netdev, void *p); | |
7d12e780 | 142 | static irqreturn_t e1000_intr(int irq, void *data); |
c3033b01 JP |
143 | static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
144 | struct e1000_tx_ring *tx_ring); | |
bea3348e | 145 | static int e1000_clean(struct napi_struct *napi, int budget); |
c3033b01 JP |
146 | static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
147 | struct e1000_rx_ring *rx_ring, | |
148 | int *work_done, int work_to_do); | |
edbbb3ca JB |
149 | static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, |
150 | struct e1000_rx_ring *rx_ring, | |
151 | int *work_done, int work_to_do); | |
581d708e | 152 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
edbbb3ca | 153 | struct e1000_rx_ring *rx_ring, |
72d64a43 | 154 | int cleaned_count); |
edbbb3ca JB |
155 | static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, |
156 | struct e1000_rx_ring *rx_ring, | |
157 | int cleaned_count); | |
1da177e4 LT |
158 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); |
159 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
160 | int cmd); | |
1da177e4 LT |
161 | static void e1000_enter_82542_rst(struct e1000_adapter *adapter); |
162 | static void e1000_leave_82542_rst(struct e1000_adapter *adapter); | |
163 | static void e1000_tx_timeout(struct net_device *dev); | |
65f27f38 | 164 | static void e1000_reset_task(struct work_struct *work); |
1da177e4 | 165 | static void e1000_smartspeed(struct e1000_adapter *adapter); |
e619d523 AK |
166 | static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
167 | struct sk_buff *skb); | |
1da177e4 | 168 | |
5622e404 JP |
169 | static bool e1000_vlan_used(struct e1000_adapter *adapter); |
170 | static void e1000_vlan_mode(struct net_device *netdev, u32 features); | |
406874a7 JP |
171 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid); |
172 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid); | |
1da177e4 LT |
173 | static void e1000_restore_vlan(struct e1000_adapter *adapter); |
174 | ||
6fdfef16 | 175 | #ifdef CONFIG_PM |
b43fcd7d | 176 | static int e1000_suspend(struct pci_dev *pdev, pm_message_t state); |
1da177e4 LT |
177 | static int e1000_resume(struct pci_dev *pdev); |
178 | #endif | |
c653e635 | 179 | static void e1000_shutdown(struct pci_dev *pdev); |
1da177e4 LT |
180 | |
181 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
182 | /* for netdump / net console */ | |
183 | static void e1000_netpoll (struct net_device *netdev); | |
184 | #endif | |
185 | ||
1f753861 JB |
186 | #define COPYBREAK_DEFAULT 256 |
187 | static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT; | |
188 | module_param(copybreak, uint, 0644); | |
189 | MODULE_PARM_DESC(copybreak, | |
190 | "Maximum size of packet that is copied to a new buffer on receive"); | |
191 | ||
9026729b AK |
192 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
193 | pci_channel_state_t state); | |
194 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev); | |
195 | static void e1000_io_resume(struct pci_dev *pdev); | |
196 | ||
197 | static struct pci_error_handlers e1000_err_handler = { | |
198 | .error_detected = e1000_io_error_detected, | |
199 | .slot_reset = e1000_io_slot_reset, | |
200 | .resume = e1000_io_resume, | |
201 | }; | |
24025e4e | 202 | |
1da177e4 LT |
203 | static struct pci_driver e1000_driver = { |
204 | .name = e1000_driver_name, | |
205 | .id_table = e1000_pci_tbl, | |
206 | .probe = e1000_probe, | |
207 | .remove = __devexit_p(e1000_remove), | |
c4e24f01 | 208 | #ifdef CONFIG_PM |
25985edc | 209 | /* Power Management Hooks */ |
1da177e4 | 210 | .suspend = e1000_suspend, |
c653e635 | 211 | .resume = e1000_resume, |
1da177e4 | 212 | #endif |
9026729b AK |
213 | .shutdown = e1000_shutdown, |
214 | .err_handler = &e1000_err_handler | |
1da177e4 LT |
215 | }; |
216 | ||
217 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
218 | MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); | |
219 | MODULE_LICENSE("GPL"); | |
220 | MODULE_VERSION(DRV_VERSION); | |
221 | ||
222 | static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; | |
223 | module_param(debug, int, 0); | |
224 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
225 | ||
675ad473 ET |
226 | /** |
227 | * e1000_get_hw_dev - return device | |
228 | * used by hardware layer to print debugging information | |
229 | * | |
230 | **/ | |
231 | struct net_device *e1000_get_hw_dev(struct e1000_hw *hw) | |
232 | { | |
233 | struct e1000_adapter *adapter = hw->back; | |
234 | return adapter->netdev; | |
235 | } | |
236 | ||
1da177e4 LT |
237 | /** |
238 | * e1000_init_module - Driver Registration Routine | |
239 | * | |
240 | * e1000_init_module is the first routine called when the driver is | |
241 | * loaded. All it does is register with the PCI subsystem. | |
242 | **/ | |
243 | ||
64798845 | 244 | static int __init e1000_init_module(void) |
1da177e4 LT |
245 | { |
246 | int ret; | |
675ad473 | 247 | pr_info("%s - version %s\n", e1000_driver_string, e1000_driver_version); |
1da177e4 | 248 | |
675ad473 | 249 | pr_info("%s\n", e1000_copyright); |
1da177e4 | 250 | |
29917620 | 251 | ret = pci_register_driver(&e1000_driver); |
1f753861 JB |
252 | if (copybreak != COPYBREAK_DEFAULT) { |
253 | if (copybreak == 0) | |
675ad473 | 254 | pr_info("copybreak disabled\n"); |
1f753861 | 255 | else |
675ad473 ET |
256 | pr_info("copybreak enabled for " |
257 | "packets <= %u bytes\n", copybreak); | |
1f753861 | 258 | } |
1da177e4 LT |
259 | return ret; |
260 | } | |
261 | ||
262 | module_init(e1000_init_module); | |
263 | ||
264 | /** | |
265 | * e1000_exit_module - Driver Exit Cleanup Routine | |
266 | * | |
267 | * e1000_exit_module is called just before the driver is removed | |
268 | * from memory. | |
269 | **/ | |
270 | ||
64798845 | 271 | static void __exit e1000_exit_module(void) |
1da177e4 | 272 | { |
1da177e4 LT |
273 | pci_unregister_driver(&e1000_driver); |
274 | } | |
275 | ||
276 | module_exit(e1000_exit_module); | |
277 | ||
2db10a08 AK |
278 | static int e1000_request_irq(struct e1000_adapter *adapter) |
279 | { | |
280 | struct net_device *netdev = adapter->netdev; | |
3e18826c | 281 | irq_handler_t handler = e1000_intr; |
e94bd23f AK |
282 | int irq_flags = IRQF_SHARED; |
283 | int err; | |
2db10a08 | 284 | |
e94bd23f AK |
285 | err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name, |
286 | netdev); | |
287 | if (err) { | |
feb8f478 | 288 | e_err(probe, "Unable to allocate interrupt Error: %d\n", err); |
e94bd23f | 289 | } |
2db10a08 AK |
290 | |
291 | return err; | |
292 | } | |
293 | ||
294 | static void e1000_free_irq(struct e1000_adapter *adapter) | |
295 | { | |
296 | struct net_device *netdev = adapter->netdev; | |
297 | ||
298 | free_irq(adapter->pdev->irq, netdev); | |
2db10a08 AK |
299 | } |
300 | ||
1da177e4 LT |
301 | /** |
302 | * e1000_irq_disable - Mask off interrupt generation on the NIC | |
303 | * @adapter: board private structure | |
304 | **/ | |
305 | ||
64798845 | 306 | static void e1000_irq_disable(struct e1000_adapter *adapter) |
1da177e4 | 307 | { |
1dc32918 JP |
308 | struct e1000_hw *hw = &adapter->hw; |
309 | ||
310 | ew32(IMC, ~0); | |
311 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
312 | synchronize_irq(adapter->pdev->irq); |
313 | } | |
314 | ||
315 | /** | |
316 | * e1000_irq_enable - Enable default interrupt generation settings | |
317 | * @adapter: board private structure | |
318 | **/ | |
319 | ||
64798845 | 320 | static void e1000_irq_enable(struct e1000_adapter *adapter) |
1da177e4 | 321 | { |
1dc32918 JP |
322 | struct e1000_hw *hw = &adapter->hw; |
323 | ||
324 | ew32(IMS, IMS_ENABLE_MASK); | |
325 | E1000_WRITE_FLUSH(); | |
1da177e4 | 326 | } |
3ad2cc67 | 327 | |
64798845 | 328 | static void e1000_update_mng_vlan(struct e1000_adapter *adapter) |
2d7edb92 | 329 | { |
1dc32918 | 330 | struct e1000_hw *hw = &adapter->hw; |
2d7edb92 | 331 | struct net_device *netdev = adapter->netdev; |
1dc32918 | 332 | u16 vid = hw->mng_cookie.vlan_id; |
406874a7 | 333 | u16 old_vid = adapter->mng_vlan_id; |
96838a40 | 334 | |
5622e404 JP |
335 | if (!e1000_vlan_used(adapter)) |
336 | return; | |
337 | ||
338 | if (!test_bit(vid, adapter->active_vlans)) { | |
339 | if (hw->mng_cookie.status & | |
340 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) { | |
341 | e1000_vlan_rx_add_vid(netdev, vid); | |
c5f226fe | 342 | adapter->mng_vlan_id = vid; |
5622e404 JP |
343 | } else { |
344 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
345 | } | |
346 | if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && | |
347 | (vid != old_vid) && | |
348 | !test_bit(old_vid, adapter->active_vlans)) | |
349 | e1000_vlan_rx_kill_vid(netdev, old_vid); | |
350 | } else { | |
351 | adapter->mng_vlan_id = vid; | |
2d7edb92 MC |
352 | } |
353 | } | |
b55ccb35 | 354 | |
64798845 | 355 | static void e1000_init_manageability(struct e1000_adapter *adapter) |
0fccd0e9 | 356 | { |
1dc32918 JP |
357 | struct e1000_hw *hw = &adapter->hw; |
358 | ||
0fccd0e9 | 359 | if (adapter->en_mng_pt) { |
1dc32918 | 360 | u32 manc = er32(MANC); |
0fccd0e9 JG |
361 | |
362 | /* disable hardware interception of ARP */ | |
363 | manc &= ~(E1000_MANC_ARP_EN); | |
364 | ||
1dc32918 | 365 | ew32(MANC, manc); |
0fccd0e9 JG |
366 | } |
367 | } | |
368 | ||
64798845 | 369 | static void e1000_release_manageability(struct e1000_adapter *adapter) |
0fccd0e9 | 370 | { |
1dc32918 JP |
371 | struct e1000_hw *hw = &adapter->hw; |
372 | ||
0fccd0e9 | 373 | if (adapter->en_mng_pt) { |
1dc32918 | 374 | u32 manc = er32(MANC); |
0fccd0e9 JG |
375 | |
376 | /* re-enable hardware interception of ARP */ | |
377 | manc |= E1000_MANC_ARP_EN; | |
378 | ||
1dc32918 | 379 | ew32(MANC, manc); |
0fccd0e9 JG |
380 | } |
381 | } | |
382 | ||
e0aac5a2 AK |
383 | /** |
384 | * e1000_configure - configure the hardware for RX and TX | |
385 | * @adapter = private board structure | |
386 | **/ | |
387 | static void e1000_configure(struct e1000_adapter *adapter) | |
1da177e4 LT |
388 | { |
389 | struct net_device *netdev = adapter->netdev; | |
2db10a08 | 390 | int i; |
1da177e4 | 391 | |
db0ce50d | 392 | e1000_set_rx_mode(netdev); |
1da177e4 LT |
393 | |
394 | e1000_restore_vlan(adapter); | |
0fccd0e9 | 395 | e1000_init_manageability(adapter); |
1da177e4 LT |
396 | |
397 | e1000_configure_tx(adapter); | |
398 | e1000_setup_rctl(adapter); | |
399 | e1000_configure_rx(adapter); | |
72d64a43 JK |
400 | /* call E1000_DESC_UNUSED which always leaves |
401 | * at least 1 descriptor unused to make sure | |
402 | * next_to_use != next_to_clean */ | |
f56799ea | 403 | for (i = 0; i < adapter->num_rx_queues; i++) { |
72d64a43 | 404 | struct e1000_rx_ring *ring = &adapter->rx_ring[i]; |
a292ca6e JK |
405 | adapter->alloc_rx_buf(adapter, ring, |
406 | E1000_DESC_UNUSED(ring)); | |
f56799ea | 407 | } |
e0aac5a2 AK |
408 | } |
409 | ||
410 | int e1000_up(struct e1000_adapter *adapter) | |
411 | { | |
1dc32918 JP |
412 | struct e1000_hw *hw = &adapter->hw; |
413 | ||
e0aac5a2 AK |
414 | /* hardware has been reset, we need to reload some things */ |
415 | e1000_configure(adapter); | |
416 | ||
417 | clear_bit(__E1000_DOWN, &adapter->flags); | |
7bfa4816 | 418 | |
bea3348e | 419 | napi_enable(&adapter->napi); |
c3570acb | 420 | |
5de55624 MC |
421 | e1000_irq_enable(adapter); |
422 | ||
4cb9be7a JB |
423 | netif_wake_queue(adapter->netdev); |
424 | ||
79f3d399 | 425 | /* fire a link change interrupt to start the watchdog */ |
1dc32918 | 426 | ew32(ICS, E1000_ICS_LSC); |
1da177e4 LT |
427 | return 0; |
428 | } | |
429 | ||
79f05bf0 AK |
430 | /** |
431 | * e1000_power_up_phy - restore link in case the phy was powered down | |
432 | * @adapter: address of board private structure | |
433 | * | |
434 | * The phy may be powered down to save power and turn off link when the | |
435 | * driver is unloaded and wake on lan is not enabled (among others) | |
436 | * *** this routine MUST be followed by a call to e1000_reset *** | |
437 | * | |
438 | **/ | |
439 | ||
d658266e | 440 | void e1000_power_up_phy(struct e1000_adapter *adapter) |
79f05bf0 | 441 | { |
1dc32918 | 442 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 443 | u16 mii_reg = 0; |
79f05bf0 AK |
444 | |
445 | /* Just clear the power down bit to wake the phy back up */ | |
1dc32918 | 446 | if (hw->media_type == e1000_media_type_copper) { |
79f05bf0 AK |
447 | /* according to the manual, the phy will retain its |
448 | * settings across a power-down/up cycle */ | |
1dc32918 | 449 | e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); |
79f05bf0 | 450 | mii_reg &= ~MII_CR_POWER_DOWN; |
1dc32918 | 451 | e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); |
79f05bf0 AK |
452 | } |
453 | } | |
454 | ||
455 | static void e1000_power_down_phy(struct e1000_adapter *adapter) | |
456 | { | |
1dc32918 JP |
457 | struct e1000_hw *hw = &adapter->hw; |
458 | ||
61c2505f | 459 | /* Power down the PHY so no link is implied when interface is down * |
c3033b01 | 460 | * The PHY cannot be powered down if any of the following is true * |
79f05bf0 AK |
461 | * (a) WoL is enabled |
462 | * (b) AMT is active | |
463 | * (c) SoL/IDER session is active */ | |
1dc32918 JP |
464 | if (!adapter->wol && hw->mac_type >= e1000_82540 && |
465 | hw->media_type == e1000_media_type_copper) { | |
406874a7 | 466 | u16 mii_reg = 0; |
61c2505f | 467 | |
1dc32918 | 468 | switch (hw->mac_type) { |
61c2505f BA |
469 | case e1000_82540: |
470 | case e1000_82545: | |
471 | case e1000_82545_rev_3: | |
472 | case e1000_82546: | |
5377a416 | 473 | case e1000_ce4100: |
61c2505f BA |
474 | case e1000_82546_rev_3: |
475 | case e1000_82541: | |
476 | case e1000_82541_rev_2: | |
477 | case e1000_82547: | |
478 | case e1000_82547_rev_2: | |
1dc32918 | 479 | if (er32(MANC) & E1000_MANC_SMBUS_EN) |
61c2505f BA |
480 | goto out; |
481 | break; | |
61c2505f BA |
482 | default: |
483 | goto out; | |
484 | } | |
1dc32918 | 485 | e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); |
79f05bf0 | 486 | mii_reg |= MII_CR_POWER_DOWN; |
1dc32918 | 487 | e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); |
4e0d8f7d | 488 | msleep(1); |
79f05bf0 | 489 | } |
61c2505f BA |
490 | out: |
491 | return; | |
79f05bf0 AK |
492 | } |
493 | ||
a4010afe JB |
494 | static void e1000_down_and_stop(struct e1000_adapter *adapter) |
495 | { | |
496 | set_bit(__E1000_DOWN, &adapter->flags); | |
497 | cancel_work_sync(&adapter->reset_task); | |
498 | cancel_delayed_work_sync(&adapter->watchdog_task); | |
499 | cancel_delayed_work_sync(&adapter->phy_info_task); | |
500 | cancel_delayed_work_sync(&adapter->fifo_stall_task); | |
501 | } | |
502 | ||
64798845 | 503 | void e1000_down(struct e1000_adapter *adapter) |
1da177e4 | 504 | { |
a6c42322 | 505 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 506 | struct net_device *netdev = adapter->netdev; |
a6c42322 | 507 | u32 rctl, tctl; |
1da177e4 | 508 | |
1314bbf3 | 509 | |
a6c42322 JB |
510 | /* disable receives in the hardware */ |
511 | rctl = er32(RCTL); | |
512 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
513 | /* flush and sleep below */ | |
514 | ||
51851073 | 515 | netif_tx_disable(netdev); |
a6c42322 JB |
516 | |
517 | /* disable transmits in the hardware */ | |
518 | tctl = er32(TCTL); | |
519 | tctl &= ~E1000_TCTL_EN; | |
520 | ew32(TCTL, tctl); | |
521 | /* flush both disables and wait for them to finish */ | |
522 | E1000_WRITE_FLUSH(); | |
523 | msleep(10); | |
524 | ||
bea3348e | 525 | napi_disable(&adapter->napi); |
c3570acb | 526 | |
1da177e4 | 527 | e1000_irq_disable(adapter); |
c1605eb3 | 528 | |
ab08853f AC |
529 | /* |
530 | * Setting DOWN must be after irq_disable to prevent | |
531 | * a screaming interrupt. Setting DOWN also prevents | |
a4010afe | 532 | * tasks from rescheduling. |
ab08853f | 533 | */ |
a4010afe | 534 | e1000_down_and_stop(adapter); |
1da177e4 | 535 | |
1da177e4 LT |
536 | adapter->link_speed = 0; |
537 | adapter->link_duplex = 0; | |
538 | netif_carrier_off(netdev); | |
1da177e4 LT |
539 | |
540 | e1000_reset(adapter); | |
581d708e MC |
541 | e1000_clean_all_tx_rings(adapter); |
542 | e1000_clean_all_rx_rings(adapter); | |
1da177e4 | 543 | } |
1da177e4 | 544 | |
38df7a39 | 545 | static void e1000_reinit_safe(struct e1000_adapter *adapter) |
338c15e4 JB |
546 | { |
547 | while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) | |
548 | msleep(1); | |
0ef4eedc | 549 | mutex_lock(&adapter->mutex); |
338c15e4 JB |
550 | e1000_down(adapter); |
551 | e1000_up(adapter); | |
0ef4eedc | 552 | mutex_unlock(&adapter->mutex); |
338c15e4 JB |
553 | clear_bit(__E1000_RESETTING, &adapter->flags); |
554 | } | |
555 | ||
64798845 | 556 | void e1000_reinit_locked(struct e1000_adapter *adapter) |
2db10a08 | 557 | { |
338c15e4 JB |
558 | /* if rtnl_lock is not held the call path is bogus */ |
559 | ASSERT_RTNL(); | |
2db10a08 AK |
560 | WARN_ON(in_interrupt()); |
561 | while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) | |
562 | msleep(1); | |
563 | e1000_down(adapter); | |
564 | e1000_up(adapter); | |
565 | clear_bit(__E1000_RESETTING, &adapter->flags); | |
1da177e4 LT |
566 | } |
567 | ||
64798845 | 568 | void e1000_reset(struct e1000_adapter *adapter) |
1da177e4 | 569 | { |
1dc32918 | 570 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 571 | u32 pba = 0, tx_space, min_tx_space, min_rx_space; |
c3033b01 | 572 | bool legacy_pba_adjust = false; |
b7cb8c2c | 573 | u16 hwm; |
1da177e4 LT |
574 | |
575 | /* Repartition Pba for greater than 9k mtu | |
576 | * To take effect CTRL.RST is required. | |
577 | */ | |
578 | ||
1dc32918 | 579 | switch (hw->mac_type) { |
018ea44e BA |
580 | case e1000_82542_rev2_0: |
581 | case e1000_82542_rev2_1: | |
582 | case e1000_82543: | |
583 | case e1000_82544: | |
584 | case e1000_82540: | |
585 | case e1000_82541: | |
586 | case e1000_82541_rev_2: | |
c3033b01 | 587 | legacy_pba_adjust = true; |
018ea44e BA |
588 | pba = E1000_PBA_48K; |
589 | break; | |
590 | case e1000_82545: | |
591 | case e1000_82545_rev_3: | |
592 | case e1000_82546: | |
5377a416 | 593 | case e1000_ce4100: |
018ea44e BA |
594 | case e1000_82546_rev_3: |
595 | pba = E1000_PBA_48K; | |
596 | break; | |
2d7edb92 | 597 | case e1000_82547: |
0e6ef3e0 | 598 | case e1000_82547_rev_2: |
c3033b01 | 599 | legacy_pba_adjust = true; |
2d7edb92 MC |
600 | pba = E1000_PBA_30K; |
601 | break; | |
018ea44e BA |
602 | case e1000_undefined: |
603 | case e1000_num_macs: | |
2d7edb92 MC |
604 | break; |
605 | } | |
606 | ||
c3033b01 | 607 | if (legacy_pba_adjust) { |
b7cb8c2c | 608 | if (hw->max_frame_size > E1000_RXBUFFER_8192) |
018ea44e | 609 | pba -= 8; /* allocate more FIFO for Tx */ |
2d7edb92 | 610 | |
1dc32918 | 611 | if (hw->mac_type == e1000_82547) { |
018ea44e BA |
612 | adapter->tx_fifo_head = 0; |
613 | adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; | |
614 | adapter->tx_fifo_size = | |
615 | (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; | |
616 | atomic_set(&adapter->tx_fifo_stall, 0); | |
617 | } | |
b7cb8c2c | 618 | } else if (hw->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) { |
018ea44e | 619 | /* adjust PBA for jumbo frames */ |
1dc32918 | 620 | ew32(PBA, pba); |
018ea44e BA |
621 | |
622 | /* To maintain wire speed transmits, the Tx FIFO should be | |
b7cb8c2c | 623 | * large enough to accommodate two full transmit packets, |
018ea44e | 624 | * rounded up to the next 1KB and expressed in KB. Likewise, |
b7cb8c2c | 625 | * the Rx FIFO should be large enough to accommodate at least |
018ea44e BA |
626 | * one full receive packet and is similarly rounded up and |
627 | * expressed in KB. */ | |
1dc32918 | 628 | pba = er32(PBA); |
018ea44e BA |
629 | /* upper 16 bits has Tx packet buffer allocation size in KB */ |
630 | tx_space = pba >> 16; | |
631 | /* lower 16 bits has Rx packet buffer allocation size in KB */ | |
632 | pba &= 0xffff; | |
b7cb8c2c JB |
633 | /* |
634 | * the tx fifo also stores 16 bytes of information about the tx | |
635 | * but don't include ethernet FCS because hardware appends it | |
636 | */ | |
637 | min_tx_space = (hw->max_frame_size + | |
638 | sizeof(struct e1000_tx_desc) - | |
639 | ETH_FCS_LEN) * 2; | |
9099cfb9 | 640 | min_tx_space = ALIGN(min_tx_space, 1024); |
018ea44e | 641 | min_tx_space >>= 10; |
b7cb8c2c JB |
642 | /* software strips receive CRC, so leave room for it */ |
643 | min_rx_space = hw->max_frame_size; | |
9099cfb9 | 644 | min_rx_space = ALIGN(min_rx_space, 1024); |
018ea44e BA |
645 | min_rx_space >>= 10; |
646 | ||
647 | /* If current Tx allocation is less than the min Tx FIFO size, | |
648 | * and the min Tx FIFO size is less than the current Rx FIFO | |
649 | * allocation, take space away from current Rx allocation */ | |
650 | if (tx_space < min_tx_space && | |
651 | ((min_tx_space - tx_space) < pba)) { | |
652 | pba = pba - (min_tx_space - tx_space); | |
653 | ||
654 | /* PCI/PCIx hardware has PBA alignment constraints */ | |
1dc32918 | 655 | switch (hw->mac_type) { |
018ea44e BA |
656 | case e1000_82545 ... e1000_82546_rev_3: |
657 | pba &= ~(E1000_PBA_8K - 1); | |
658 | break; | |
659 | default: | |
660 | break; | |
661 | } | |
662 | ||
663 | /* if short on rx space, rx wins and must trump tx | |
664 | * adjustment or use Early Receive if available */ | |
1532ecea JB |
665 | if (pba < min_rx_space) |
666 | pba = min_rx_space; | |
018ea44e | 667 | } |
1da177e4 | 668 | } |
2d7edb92 | 669 | |
1dc32918 | 670 | ew32(PBA, pba); |
1da177e4 | 671 | |
b7cb8c2c JB |
672 | /* |
673 | * flow control settings: | |
674 | * The high water mark must be low enough to fit one full frame | |
675 | * (or the size used for early receive) above it in the Rx FIFO. | |
676 | * Set it to the lower of: | |
677 | * - 90% of the Rx FIFO size, and | |
678 | * - the full Rx FIFO size minus the early receive size (for parts | |
679 | * with ERT support assuming ERT set to E1000_ERT_2048), or | |
680 | * - the full Rx FIFO size minus one full frame | |
681 | */ | |
682 | hwm = min(((pba << 10) * 9 / 10), | |
683 | ((pba << 10) - hw->max_frame_size)); | |
684 | ||
685 | hw->fc_high_water = hwm & 0xFFF8; /* 8-byte granularity */ | |
686 | hw->fc_low_water = hw->fc_high_water - 8; | |
edbbb3ca | 687 | hw->fc_pause_time = E1000_FC_PAUSE_TIME; |
1dc32918 JP |
688 | hw->fc_send_xon = 1; |
689 | hw->fc = hw->original_fc; | |
1da177e4 | 690 | |
2d7edb92 | 691 | /* Allow time for pending master requests to run */ |
1dc32918 JP |
692 | e1000_reset_hw(hw); |
693 | if (hw->mac_type >= e1000_82544) | |
694 | ew32(WUC, 0); | |
09ae3e88 | 695 | |
1dc32918 | 696 | if (e1000_init_hw(hw)) |
feb8f478 | 697 | e_dev_err("Hardware Error\n"); |
2d7edb92 | 698 | e1000_update_mng_vlan(adapter); |
3d5460a0 JB |
699 | |
700 | /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */ | |
1dc32918 | 701 | if (hw->mac_type >= e1000_82544 && |
1dc32918 JP |
702 | hw->autoneg == 1 && |
703 | hw->autoneg_advertised == ADVERTISE_1000_FULL) { | |
704 | u32 ctrl = er32(CTRL); | |
3d5460a0 JB |
705 | /* clear phy power management bit if we are in gig only mode, |
706 | * which if enabled will attempt negotiation to 100Mb, which | |
707 | * can cause a loss of link at power off or driver unload */ | |
708 | ctrl &= ~E1000_CTRL_SWDPIN3; | |
1dc32918 | 709 | ew32(CTRL, ctrl); |
3d5460a0 JB |
710 | } |
711 | ||
1da177e4 | 712 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
1dc32918 | 713 | ew32(VET, ETHERNET_IEEE_VLAN_TYPE); |
1da177e4 | 714 | |
1dc32918 JP |
715 | e1000_reset_adaptive(hw); |
716 | e1000_phy_get_info(hw, &adapter->phy_info); | |
9a53a202 | 717 | |
0fccd0e9 | 718 | e1000_release_manageability(adapter); |
1da177e4 LT |
719 | } |
720 | ||
67b3c27c AK |
721 | /** |
722 | * Dump the eeprom for users having checksum issues | |
723 | **/ | |
b4ea895d | 724 | static void e1000_dump_eeprom(struct e1000_adapter *adapter) |
67b3c27c AK |
725 | { |
726 | struct net_device *netdev = adapter->netdev; | |
727 | struct ethtool_eeprom eeprom; | |
728 | const struct ethtool_ops *ops = netdev->ethtool_ops; | |
729 | u8 *data; | |
730 | int i; | |
731 | u16 csum_old, csum_new = 0; | |
732 | ||
733 | eeprom.len = ops->get_eeprom_len(netdev); | |
734 | eeprom.offset = 0; | |
735 | ||
736 | data = kmalloc(eeprom.len, GFP_KERNEL); | |
737 | if (!data) { | |
675ad473 | 738 | pr_err("Unable to allocate memory to dump EEPROM data\n"); |
67b3c27c AK |
739 | return; |
740 | } | |
741 | ||
742 | ops->get_eeprom(netdev, &eeprom, data); | |
743 | ||
744 | csum_old = (data[EEPROM_CHECKSUM_REG * 2]) + | |
745 | (data[EEPROM_CHECKSUM_REG * 2 + 1] << 8); | |
746 | for (i = 0; i < EEPROM_CHECKSUM_REG * 2; i += 2) | |
747 | csum_new += data[i] + (data[i + 1] << 8); | |
748 | csum_new = EEPROM_SUM - csum_new; | |
749 | ||
675ad473 ET |
750 | pr_err("/*********************/\n"); |
751 | pr_err("Current EEPROM Checksum : 0x%04x\n", csum_old); | |
752 | pr_err("Calculated : 0x%04x\n", csum_new); | |
67b3c27c | 753 | |
675ad473 ET |
754 | pr_err("Offset Values\n"); |
755 | pr_err("======== ======\n"); | |
67b3c27c AK |
756 | print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, data, 128, 0); |
757 | ||
675ad473 ET |
758 | pr_err("Include this output when contacting your support provider.\n"); |
759 | pr_err("This is not a software error! Something bad happened to\n"); | |
760 | pr_err("your hardware or EEPROM image. Ignoring this problem could\n"); | |
761 | pr_err("result in further problems, possibly loss of data,\n"); | |
762 | pr_err("corruption or system hangs!\n"); | |
763 | pr_err("The MAC Address will be reset to 00:00:00:00:00:00,\n"); | |
764 | pr_err("which is invalid and requires you to set the proper MAC\n"); | |
765 | pr_err("address manually before continuing to enable this network\n"); | |
766 | pr_err("device. Please inspect the EEPROM dump and report the\n"); | |
767 | pr_err("issue to your hardware vendor or Intel Customer Support.\n"); | |
768 | pr_err("/*********************/\n"); | |
67b3c27c AK |
769 | |
770 | kfree(data); | |
771 | } | |
772 | ||
81250297 TI |
773 | /** |
774 | * e1000_is_need_ioport - determine if an adapter needs ioport resources or not | |
775 | * @pdev: PCI device information struct | |
776 | * | |
777 | * Return true if an adapter needs ioport resources | |
778 | **/ | |
779 | static int e1000_is_need_ioport(struct pci_dev *pdev) | |
780 | { | |
781 | switch (pdev->device) { | |
782 | case E1000_DEV_ID_82540EM: | |
783 | case E1000_DEV_ID_82540EM_LOM: | |
784 | case E1000_DEV_ID_82540EP: | |
785 | case E1000_DEV_ID_82540EP_LOM: | |
786 | case E1000_DEV_ID_82540EP_LP: | |
787 | case E1000_DEV_ID_82541EI: | |
788 | case E1000_DEV_ID_82541EI_MOBILE: | |
789 | case E1000_DEV_ID_82541ER: | |
790 | case E1000_DEV_ID_82541ER_LOM: | |
791 | case E1000_DEV_ID_82541GI: | |
792 | case E1000_DEV_ID_82541GI_LF: | |
793 | case E1000_DEV_ID_82541GI_MOBILE: | |
794 | case E1000_DEV_ID_82544EI_COPPER: | |
795 | case E1000_DEV_ID_82544EI_FIBER: | |
796 | case E1000_DEV_ID_82544GC_COPPER: | |
797 | case E1000_DEV_ID_82544GC_LOM: | |
798 | case E1000_DEV_ID_82545EM_COPPER: | |
799 | case E1000_DEV_ID_82545EM_FIBER: | |
800 | case E1000_DEV_ID_82546EB_COPPER: | |
801 | case E1000_DEV_ID_82546EB_FIBER: | |
802 | case E1000_DEV_ID_82546EB_QUAD_COPPER: | |
803 | return true; | |
804 | default: | |
805 | return false; | |
806 | } | |
807 | } | |
808 | ||
5622e404 JP |
809 | static u32 e1000_fix_features(struct net_device *netdev, u32 features) |
810 | { | |
811 | /* | |
812 | * Since there is no support for separate rx/tx vlan accel | |
813 | * enable/disable make sure tx flag is always in same state as rx. | |
814 | */ | |
815 | if (features & NETIF_F_HW_VLAN_RX) | |
816 | features |= NETIF_F_HW_VLAN_TX; | |
817 | else | |
818 | features &= ~NETIF_F_HW_VLAN_TX; | |
819 | ||
820 | return features; | |
821 | } | |
822 | ||
e97d3207 MM |
823 | static int e1000_set_features(struct net_device *netdev, u32 features) |
824 | { | |
825 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
826 | u32 changed = features ^ netdev->features; | |
827 | ||
5622e404 JP |
828 | if (changed & NETIF_F_HW_VLAN_RX) |
829 | e1000_vlan_mode(netdev, features); | |
830 | ||
e97d3207 MM |
831 | if (!(changed & NETIF_F_RXCSUM)) |
832 | return 0; | |
833 | ||
834 | adapter->rx_csum = !!(features & NETIF_F_RXCSUM); | |
835 | ||
836 | if (netif_running(netdev)) | |
837 | e1000_reinit_locked(adapter); | |
838 | else | |
839 | e1000_reset(adapter); | |
840 | ||
841 | return 0; | |
842 | } | |
843 | ||
0e7614bc SH |
844 | static const struct net_device_ops e1000_netdev_ops = { |
845 | .ndo_open = e1000_open, | |
846 | .ndo_stop = e1000_close, | |
00829823 | 847 | .ndo_start_xmit = e1000_xmit_frame, |
0e7614bc SH |
848 | .ndo_get_stats = e1000_get_stats, |
849 | .ndo_set_rx_mode = e1000_set_rx_mode, | |
850 | .ndo_set_mac_address = e1000_set_mac, | |
5622e404 | 851 | .ndo_tx_timeout = e1000_tx_timeout, |
0e7614bc SH |
852 | .ndo_change_mtu = e1000_change_mtu, |
853 | .ndo_do_ioctl = e1000_ioctl, | |
854 | .ndo_validate_addr = eth_validate_addr, | |
0e7614bc SH |
855 | .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, |
856 | .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, | |
857 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
858 | .ndo_poll_controller = e1000_netpoll, | |
859 | #endif | |
5622e404 JP |
860 | .ndo_fix_features = e1000_fix_features, |
861 | .ndo_set_features = e1000_set_features, | |
0e7614bc SH |
862 | }; |
863 | ||
e508be17 JB |
864 | /** |
865 | * e1000_init_hw_struct - initialize members of hw struct | |
866 | * @adapter: board private struct | |
867 | * @hw: structure used by e1000_hw.c | |
868 | * | |
869 | * Factors out initialization of the e1000_hw struct to its own function | |
870 | * that can be called very early at init (just after struct allocation). | |
871 | * Fields are initialized based on PCI device information and | |
872 | * OS network device settings (MTU size). | |
873 | * Returns negative error codes if MAC type setup fails. | |
874 | */ | |
875 | static int e1000_init_hw_struct(struct e1000_adapter *adapter, | |
876 | struct e1000_hw *hw) | |
877 | { | |
878 | struct pci_dev *pdev = adapter->pdev; | |
879 | ||
880 | /* PCI config space info */ | |
881 | hw->vendor_id = pdev->vendor; | |
882 | hw->device_id = pdev->device; | |
883 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
884 | hw->subsystem_id = pdev->subsystem_device; | |
885 | hw->revision_id = pdev->revision; | |
886 | ||
887 | pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); | |
888 | ||
889 | hw->max_frame_size = adapter->netdev->mtu + | |
890 | ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; | |
891 | hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; | |
892 | ||
893 | /* identify the MAC */ | |
894 | if (e1000_set_mac_type(hw)) { | |
895 | e_err(probe, "Unknown MAC Type\n"); | |
896 | return -EIO; | |
897 | } | |
898 | ||
899 | switch (hw->mac_type) { | |
900 | default: | |
901 | break; | |
902 | case e1000_82541: | |
903 | case e1000_82547: | |
904 | case e1000_82541_rev_2: | |
905 | case e1000_82547_rev_2: | |
906 | hw->phy_init_script = 1; | |
907 | break; | |
908 | } | |
909 | ||
910 | e1000_set_media_type(hw); | |
911 | e1000_get_bus_info(hw); | |
912 | ||
913 | hw->wait_autoneg_complete = false; | |
914 | hw->tbi_compatibility_en = true; | |
915 | hw->adaptive_ifs = true; | |
916 | ||
917 | /* Copper options */ | |
918 | ||
919 | if (hw->media_type == e1000_media_type_copper) { | |
920 | hw->mdix = AUTO_ALL_MODES; | |
921 | hw->disable_polarity_correction = false; | |
922 | hw->master_slave = E1000_MASTER_SLAVE; | |
923 | } | |
924 | ||
925 | return 0; | |
926 | } | |
927 | ||
1da177e4 LT |
928 | /** |
929 | * e1000_probe - Device Initialization Routine | |
930 | * @pdev: PCI device information struct | |
931 | * @ent: entry in e1000_pci_tbl | |
932 | * | |
933 | * Returns 0 on success, negative on failure | |
934 | * | |
935 | * e1000_probe initializes an adapter identified by a pci_dev structure. | |
936 | * The OS initialization, configuring of the adapter private structure, | |
937 | * and a hardware reset occur. | |
938 | **/ | |
1dc32918 JP |
939 | static int __devinit e1000_probe(struct pci_dev *pdev, |
940 | const struct pci_device_id *ent) | |
1da177e4 LT |
941 | { |
942 | struct net_device *netdev; | |
943 | struct e1000_adapter *adapter; | |
1dc32918 | 944 | struct e1000_hw *hw; |
2d7edb92 | 945 | |
1da177e4 | 946 | static int cards_found = 0; |
120cd576 | 947 | static int global_quad_port_a = 0; /* global ksp3 port a indication */ |
2d7edb92 | 948 | int i, err, pci_using_dac; |
406874a7 | 949 | u16 eeprom_data = 0; |
5377a416 | 950 | u16 tmp = 0; |
406874a7 | 951 | u16 eeprom_apme_mask = E1000_EEPROM_APME; |
81250297 | 952 | int bars, need_ioport; |
0795af57 | 953 | |
81250297 TI |
954 | /* do not allocate ioport bars when not needed */ |
955 | need_ioport = e1000_is_need_ioport(pdev); | |
956 | if (need_ioport) { | |
957 | bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO); | |
958 | err = pci_enable_device(pdev); | |
959 | } else { | |
960 | bars = pci_select_bars(pdev, IORESOURCE_MEM); | |
4d7155b9 | 961 | err = pci_enable_device_mem(pdev); |
81250297 | 962 | } |
c7be73bc | 963 | if (err) |
1da177e4 LT |
964 | return err; |
965 | ||
81250297 | 966 | err = pci_request_selected_regions(pdev, bars, e1000_driver_name); |
c7be73bc | 967 | if (err) |
6dd62ab0 | 968 | goto err_pci_reg; |
1da177e4 LT |
969 | |
970 | pci_set_master(pdev); | |
dbb5aaeb NN |
971 | err = pci_save_state(pdev); |
972 | if (err) | |
973 | goto err_alloc_etherdev; | |
1da177e4 | 974 | |
6dd62ab0 | 975 | err = -ENOMEM; |
1da177e4 | 976 | netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
6dd62ab0 | 977 | if (!netdev) |
1da177e4 | 978 | goto err_alloc_etherdev; |
1da177e4 | 979 | |
1da177e4 LT |
980 | SET_NETDEV_DEV(netdev, &pdev->dev); |
981 | ||
982 | pci_set_drvdata(pdev, netdev); | |
60490fe0 | 983 | adapter = netdev_priv(netdev); |
1da177e4 LT |
984 | adapter->netdev = netdev; |
985 | adapter->pdev = pdev; | |
1da177e4 | 986 | adapter->msg_enable = (1 << debug) - 1; |
81250297 TI |
987 | adapter->bars = bars; |
988 | adapter->need_ioport = need_ioport; | |
1da177e4 | 989 | |
1dc32918 JP |
990 | hw = &adapter->hw; |
991 | hw->back = adapter; | |
992 | ||
6dd62ab0 | 993 | err = -EIO; |
275f165f | 994 | hw->hw_addr = pci_ioremap_bar(pdev, BAR_0); |
1dc32918 | 995 | if (!hw->hw_addr) |
1da177e4 | 996 | goto err_ioremap; |
1da177e4 | 997 | |
81250297 TI |
998 | if (adapter->need_ioport) { |
999 | for (i = BAR_1; i <= BAR_5; i++) { | |
1000 | if (pci_resource_len(pdev, i) == 0) | |
1001 | continue; | |
1002 | if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { | |
1003 | hw->io_base = pci_resource_start(pdev, i); | |
1004 | break; | |
1005 | } | |
1da177e4 LT |
1006 | } |
1007 | } | |
1008 | ||
e508be17 JB |
1009 | /* make ready for any if (hw->...) below */ |
1010 | err = e1000_init_hw_struct(adapter, hw); | |
1011 | if (err) | |
1012 | goto err_sw_init; | |
1013 | ||
1014 | /* | |
1015 | * there is a workaround being applied below that limits | |
1016 | * 64-bit DMA addresses to 64-bit hardware. There are some | |
1017 | * 32-bit adapters that Tx hang when given 64-bit DMA addresses | |
1018 | */ | |
1019 | pci_using_dac = 0; | |
1020 | if ((hw->bus_type == e1000_bus_type_pcix) && | |
1021 | !dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) { | |
1022 | /* | |
1023 | * according to DMA-API-HOWTO, coherent calls will always | |
1024 | * succeed if the set call did | |
1025 | */ | |
1026 | dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); | |
1027 | pci_using_dac = 1; | |
e508be17 | 1028 | } else { |
19a0b67a DN |
1029 | err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); |
1030 | if (err) { | |
1031 | pr_err("No usable DMA config, aborting\n"); | |
1032 | goto err_dma; | |
1033 | } | |
1034 | dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); | |
e508be17 JB |
1035 | } |
1036 | ||
0e7614bc | 1037 | netdev->netdev_ops = &e1000_netdev_ops; |
1da177e4 | 1038 | e1000_set_ethtool_ops(netdev); |
1da177e4 | 1039 | netdev->watchdog_timeo = 5 * HZ; |
bea3348e | 1040 | netif_napi_add(netdev, &adapter->napi, e1000_clean, 64); |
0e7614bc | 1041 | |
0eb5a34c | 1042 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
1da177e4 | 1043 | |
1da177e4 LT |
1044 | adapter->bd_number = cards_found; |
1045 | ||
1046 | /* setup the private structure */ | |
1047 | ||
c7be73bc JP |
1048 | err = e1000_sw_init(adapter); |
1049 | if (err) | |
1da177e4 LT |
1050 | goto err_sw_init; |
1051 | ||
6dd62ab0 | 1052 | err = -EIO; |
5377a416 DB |
1053 | if (hw->mac_type == e1000_ce4100) { |
1054 | ce4100_gbe_mdio_base_phy = pci_resource_start(pdev, BAR_1); | |
1055 | ce4100_gbe_mdio_base_virt = ioremap(ce4100_gbe_mdio_base_phy, | |
1056 | pci_resource_len(pdev, BAR_1)); | |
1057 | ||
1058 | if (!ce4100_gbe_mdio_base_virt) | |
1059 | goto err_mdio_ioremap; | |
1060 | } | |
2d7edb92 | 1061 | |
1dc32918 | 1062 | if (hw->mac_type >= e1000_82543) { |
e97d3207 | 1063 | netdev->hw_features = NETIF_F_SG | |
5622e404 JP |
1064 | NETIF_F_HW_CSUM | |
1065 | NETIF_F_HW_VLAN_RX; | |
e97d3207 | 1066 | netdev->features = NETIF_F_HW_VLAN_TX | |
1da177e4 LT |
1067 | NETIF_F_HW_VLAN_FILTER; |
1068 | } | |
1069 | ||
1dc32918 JP |
1070 | if ((hw->mac_type >= e1000_82544) && |
1071 | (hw->mac_type != e1000_82547)) | |
e97d3207 MM |
1072 | netdev->hw_features |= NETIF_F_TSO; |
1073 | ||
1074 | netdev->features |= netdev->hw_features; | |
1075 | netdev->hw_features |= NETIF_F_RXCSUM; | |
2d7edb92 | 1076 | |
7b872a55 | 1077 | if (pci_using_dac) { |
1da177e4 | 1078 | netdev->features |= NETIF_F_HIGHDMA; |
7b872a55 YZ |
1079 | netdev->vlan_features |= NETIF_F_HIGHDMA; |
1080 | } | |
1da177e4 | 1081 | |
20501a69 | 1082 | netdev->vlan_features |= NETIF_F_TSO; |
20501a69 PM |
1083 | netdev->vlan_features |= NETIF_F_HW_CSUM; |
1084 | netdev->vlan_features |= NETIF_F_SG; | |
1085 | ||
01789349 JP |
1086 | netdev->priv_flags |= IFF_UNICAST_FLT; |
1087 | ||
1dc32918 | 1088 | adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw); |
2d7edb92 | 1089 | |
cd94dd0b | 1090 | /* initialize eeprom parameters */ |
1dc32918 | 1091 | if (e1000_init_eeprom_params(hw)) { |
feb8f478 | 1092 | e_err(probe, "EEPROM initialization failed\n"); |
6dd62ab0 | 1093 | goto err_eeprom; |
cd94dd0b AK |
1094 | } |
1095 | ||
96838a40 | 1096 | /* before reading the EEPROM, reset the controller to |
1da177e4 | 1097 | * put the device in a known good starting state */ |
96838a40 | 1098 | |
1dc32918 | 1099 | e1000_reset_hw(hw); |
1da177e4 LT |
1100 | |
1101 | /* make sure the EEPROM is good */ | |
1dc32918 | 1102 | if (e1000_validate_eeprom_checksum(hw) < 0) { |
feb8f478 | 1103 | e_err(probe, "The EEPROM Checksum Is Not Valid\n"); |
67b3c27c AK |
1104 | e1000_dump_eeprom(adapter); |
1105 | /* | |
1106 | * set MAC address to all zeroes to invalidate and temporary | |
1107 | * disable this device for the user. This blocks regular | |
1108 | * traffic while still permitting ethtool ioctls from reaching | |
1109 | * the hardware as well as allowing the user to run the | |
1110 | * interface after manually setting a hw addr using | |
1111 | * `ip set address` | |
1112 | */ | |
1dc32918 | 1113 | memset(hw->mac_addr, 0, netdev->addr_len); |
67b3c27c AK |
1114 | } else { |
1115 | /* copy the MAC address out of the EEPROM */ | |
1dc32918 | 1116 | if (e1000_read_mac_addr(hw)) |
feb8f478 | 1117 | e_err(probe, "EEPROM Read Error\n"); |
1da177e4 | 1118 | } |
67b3c27c | 1119 | /* don't block initalization here due to bad MAC address */ |
1dc32918 JP |
1120 | memcpy(netdev->dev_addr, hw->mac_addr, netdev->addr_len); |
1121 | memcpy(netdev->perm_addr, hw->mac_addr, netdev->addr_len); | |
1da177e4 | 1122 | |
67b3c27c | 1123 | if (!is_valid_ether_addr(netdev->perm_addr)) |
feb8f478 | 1124 | e_err(probe, "Invalid MAC Address\n"); |
1da177e4 | 1125 | |
1da177e4 | 1126 | |
a4010afe JB |
1127 | INIT_DELAYED_WORK(&adapter->watchdog_task, e1000_watchdog); |
1128 | INIT_DELAYED_WORK(&adapter->fifo_stall_task, | |
1129 | e1000_82547_tx_fifo_stall_task); | |
1130 | INIT_DELAYED_WORK(&adapter->phy_info_task, e1000_update_phy_info_task); | |
65f27f38 | 1131 | INIT_WORK(&adapter->reset_task, e1000_reset_task); |
1da177e4 | 1132 | |
1da177e4 LT |
1133 | e1000_check_options(adapter); |
1134 | ||
1135 | /* Initial Wake on LAN setting | |
1136 | * If APM wake is enabled in the EEPROM, | |
1137 | * enable the ACPI Magic Packet filter | |
1138 | */ | |
1139 | ||
1dc32918 | 1140 | switch (hw->mac_type) { |
1da177e4 LT |
1141 | case e1000_82542_rev2_0: |
1142 | case e1000_82542_rev2_1: | |
1143 | case e1000_82543: | |
1144 | break; | |
1145 | case e1000_82544: | |
1dc32918 | 1146 | e1000_read_eeprom(hw, |
1da177e4 LT |
1147 | EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); |
1148 | eeprom_apme_mask = E1000_EEPROM_82544_APM; | |
1149 | break; | |
1150 | case e1000_82546: | |
1151 | case e1000_82546_rev_3: | |
1dc32918 JP |
1152 | if (er32(STATUS) & E1000_STATUS_FUNC_1){ |
1153 | e1000_read_eeprom(hw, | |
1da177e4 LT |
1154 | EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); |
1155 | break; | |
1156 | } | |
1157 | /* Fall Through */ | |
1158 | default: | |
1dc32918 | 1159 | e1000_read_eeprom(hw, |
1da177e4 LT |
1160 | EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); |
1161 | break; | |
1162 | } | |
96838a40 | 1163 | if (eeprom_data & eeprom_apme_mask) |
120cd576 JB |
1164 | adapter->eeprom_wol |= E1000_WUFC_MAG; |
1165 | ||
1166 | /* now that we have the eeprom settings, apply the special cases | |
1167 | * where the eeprom may be wrong or the board simply won't support | |
1168 | * wake on lan on a particular port */ | |
1169 | switch (pdev->device) { | |
1170 | case E1000_DEV_ID_82546GB_PCIE: | |
1171 | adapter->eeprom_wol = 0; | |
1172 | break; | |
1173 | case E1000_DEV_ID_82546EB_FIBER: | |
1174 | case E1000_DEV_ID_82546GB_FIBER: | |
120cd576 JB |
1175 | /* Wake events only supported on port A for dual fiber |
1176 | * regardless of eeprom setting */ | |
1dc32918 | 1177 | if (er32(STATUS) & E1000_STATUS_FUNC_1) |
120cd576 JB |
1178 | adapter->eeprom_wol = 0; |
1179 | break; | |
1180 | case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3: | |
1181 | /* if quad port adapter, disable WoL on all but port A */ | |
1182 | if (global_quad_port_a != 0) | |
1183 | adapter->eeprom_wol = 0; | |
1184 | else | |
1185 | adapter->quad_port_a = 1; | |
1186 | /* Reset for multiple quad port adapters */ | |
1187 | if (++global_quad_port_a == 4) | |
1188 | global_quad_port_a = 0; | |
1189 | break; | |
1190 | } | |
1191 | ||
1192 | /* initialize the wol settings based on the eeprom settings */ | |
1193 | adapter->wol = adapter->eeprom_wol; | |
de126489 | 1194 | device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
1da177e4 | 1195 | |
5377a416 DB |
1196 | /* Auto detect PHY address */ |
1197 | if (hw->mac_type == e1000_ce4100) { | |
1198 | for (i = 0; i < 32; i++) { | |
1199 | hw->phy_addr = i; | |
1200 | e1000_read_phy_reg(hw, PHY_ID2, &tmp); | |
1201 | if (tmp == 0 || tmp == 0xFF) { | |
1202 | if (i == 31) | |
1203 | goto err_eeprom; | |
1204 | continue; | |
1205 | } else | |
1206 | break; | |
1207 | } | |
1208 | } | |
1209 | ||
675ad473 ET |
1210 | /* reset the hardware with the new settings */ |
1211 | e1000_reset(adapter); | |
1212 | ||
1213 | strcpy(netdev->name, "eth%d"); | |
1214 | err = register_netdev(netdev); | |
1215 | if (err) | |
1216 | goto err_register; | |
1217 | ||
5622e404 JP |
1218 | e1000_vlan_mode(netdev, netdev->features); |
1219 | ||
fb3d47d4 | 1220 | /* print bus type/speed/width info */ |
feb8f478 | 1221 | e_info(probe, "(PCI%s:%dMHz:%d-bit) %pM\n", |
7837e58c JP |
1222 | ((hw->bus_type == e1000_bus_type_pcix) ? "-X" : ""), |
1223 | ((hw->bus_speed == e1000_bus_speed_133) ? 133 : | |
1224 | (hw->bus_speed == e1000_bus_speed_120) ? 120 : | |
1225 | (hw->bus_speed == e1000_bus_speed_100) ? 100 : | |
1226 | (hw->bus_speed == e1000_bus_speed_66) ? 66 : 33), | |
1227 | ((hw->bus_width == e1000_bus_width_64) ? 64 : 32), | |
1228 | netdev->dev_addr); | |
1314bbf3 | 1229 | |
eb62efd2 JB |
1230 | /* carrier off reporting is important to ethtool even BEFORE open */ |
1231 | netif_carrier_off(netdev); | |
1232 | ||
feb8f478 | 1233 | e_info(probe, "Intel(R) PRO/1000 Network Connection\n"); |
1da177e4 LT |
1234 | |
1235 | cards_found++; | |
1236 | return 0; | |
1237 | ||
1238 | err_register: | |
6dd62ab0 | 1239 | err_eeprom: |
1532ecea | 1240 | e1000_phy_hw_reset(hw); |
6dd62ab0 | 1241 | |
1dc32918 JP |
1242 | if (hw->flash_address) |
1243 | iounmap(hw->flash_address); | |
6dd62ab0 VA |
1244 | kfree(adapter->tx_ring); |
1245 | kfree(adapter->rx_ring); | |
e508be17 | 1246 | err_dma: |
1da177e4 | 1247 | err_sw_init: |
5377a416 DB |
1248 | err_mdio_ioremap: |
1249 | iounmap(ce4100_gbe_mdio_base_virt); | |
1dc32918 | 1250 | iounmap(hw->hw_addr); |
1da177e4 LT |
1251 | err_ioremap: |
1252 | free_netdev(netdev); | |
1253 | err_alloc_etherdev: | |
81250297 | 1254 | pci_release_selected_regions(pdev, bars); |
6dd62ab0 | 1255 | err_pci_reg: |
6dd62ab0 | 1256 | pci_disable_device(pdev); |
1da177e4 LT |
1257 | return err; |
1258 | } | |
1259 | ||
1260 | /** | |
1261 | * e1000_remove - Device Removal Routine | |
1262 | * @pdev: PCI device information struct | |
1263 | * | |
1264 | * e1000_remove is called by the PCI subsystem to alert the driver | |
1265 | * that it should release a PCI device. The could be caused by a | |
1266 | * Hot-Plug event, or because the driver is going to be removed from | |
1267 | * memory. | |
1268 | **/ | |
1269 | ||
64798845 | 1270 | static void __devexit e1000_remove(struct pci_dev *pdev) |
1da177e4 LT |
1271 | { |
1272 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 1273 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 1274 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 1275 | |
a4010afe | 1276 | e1000_down_and_stop(adapter); |
0fccd0e9 | 1277 | e1000_release_manageability(adapter); |
1da177e4 | 1278 | |
bea3348e SH |
1279 | unregister_netdev(netdev); |
1280 | ||
1532ecea | 1281 | e1000_phy_hw_reset(hw); |
1da177e4 | 1282 | |
24025e4e MC |
1283 | kfree(adapter->tx_ring); |
1284 | kfree(adapter->rx_ring); | |
24025e4e | 1285 | |
1dc32918 JP |
1286 | iounmap(hw->hw_addr); |
1287 | if (hw->flash_address) | |
1288 | iounmap(hw->flash_address); | |
81250297 | 1289 | pci_release_selected_regions(pdev, adapter->bars); |
1da177e4 LT |
1290 | |
1291 | free_netdev(netdev); | |
1292 | ||
1293 | pci_disable_device(pdev); | |
1294 | } | |
1295 | ||
1296 | /** | |
1297 | * e1000_sw_init - Initialize general software structures (struct e1000_adapter) | |
1298 | * @adapter: board private structure to initialize | |
1299 | * | |
1300 | * e1000_sw_init initializes the Adapter private data structure. | |
e508be17 | 1301 | * e1000_init_hw_struct MUST be called before this function |
1da177e4 LT |
1302 | **/ |
1303 | ||
64798845 | 1304 | static int __devinit e1000_sw_init(struct e1000_adapter *adapter) |
1da177e4 | 1305 | { |
eb0f8054 | 1306 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
1da177e4 | 1307 | |
f56799ea JK |
1308 | adapter->num_tx_queues = 1; |
1309 | adapter->num_rx_queues = 1; | |
581d708e MC |
1310 | |
1311 | if (e1000_alloc_queues(adapter)) { | |
feb8f478 | 1312 | e_err(probe, "Unable to allocate memory for queues\n"); |
581d708e MC |
1313 | return -ENOMEM; |
1314 | } | |
1315 | ||
47313054 | 1316 | /* Explicitly disable IRQ since the NIC can be in any state. */ |
47313054 HX |
1317 | e1000_irq_disable(adapter); |
1318 | ||
1da177e4 | 1319 | spin_lock_init(&adapter->stats_lock); |
0ef4eedc | 1320 | mutex_init(&adapter->mutex); |
1da177e4 | 1321 | |
1314bbf3 AK |
1322 | set_bit(__E1000_DOWN, &adapter->flags); |
1323 | ||
1da177e4 LT |
1324 | return 0; |
1325 | } | |
1326 | ||
581d708e MC |
1327 | /** |
1328 | * e1000_alloc_queues - Allocate memory for all rings | |
1329 | * @adapter: board private structure to initialize | |
1330 | * | |
1331 | * We allocate one ring per queue at run-time since we don't know the | |
3e1d7cd2 | 1332 | * number of queues at compile-time. |
581d708e MC |
1333 | **/ |
1334 | ||
64798845 | 1335 | static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter) |
581d708e | 1336 | { |
1c7e5b12 YB |
1337 | adapter->tx_ring = kcalloc(adapter->num_tx_queues, |
1338 | sizeof(struct e1000_tx_ring), GFP_KERNEL); | |
581d708e MC |
1339 | if (!adapter->tx_ring) |
1340 | return -ENOMEM; | |
581d708e | 1341 | |
1c7e5b12 YB |
1342 | adapter->rx_ring = kcalloc(adapter->num_rx_queues, |
1343 | sizeof(struct e1000_rx_ring), GFP_KERNEL); | |
581d708e MC |
1344 | if (!adapter->rx_ring) { |
1345 | kfree(adapter->tx_ring); | |
1346 | return -ENOMEM; | |
1347 | } | |
581d708e | 1348 | |
581d708e MC |
1349 | return E1000_SUCCESS; |
1350 | } | |
1351 | ||
1da177e4 LT |
1352 | /** |
1353 | * e1000_open - Called when a network interface is made active | |
1354 | * @netdev: network interface device structure | |
1355 | * | |
1356 | * Returns 0 on success, negative value on failure | |
1357 | * | |
1358 | * The open entry point is called when a network interface is made | |
1359 | * active by the system (IFF_UP). At this point all resources needed | |
1360 | * for transmit and receive operations are allocated, the interrupt | |
a4010afe | 1361 | * handler is registered with the OS, the watchdog task is started, |
1da177e4 LT |
1362 | * and the stack is notified that the interface is ready. |
1363 | **/ | |
1364 | ||
64798845 | 1365 | static int e1000_open(struct net_device *netdev) |
1da177e4 | 1366 | { |
60490fe0 | 1367 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 1368 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
1369 | int err; |
1370 | ||
2db10a08 | 1371 | /* disallow open during test */ |
1314bbf3 | 1372 | if (test_bit(__E1000_TESTING, &adapter->flags)) |
2db10a08 AK |
1373 | return -EBUSY; |
1374 | ||
eb62efd2 JB |
1375 | netif_carrier_off(netdev); |
1376 | ||
1da177e4 | 1377 | /* allocate transmit descriptors */ |
e0aac5a2 AK |
1378 | err = e1000_setup_all_tx_resources(adapter); |
1379 | if (err) | |
1da177e4 LT |
1380 | goto err_setup_tx; |
1381 | ||
1382 | /* allocate receive descriptors */ | |
e0aac5a2 | 1383 | err = e1000_setup_all_rx_resources(adapter); |
b5bf28cd | 1384 | if (err) |
e0aac5a2 | 1385 | goto err_setup_rx; |
b5bf28cd | 1386 | |
79f05bf0 AK |
1387 | e1000_power_up_phy(adapter); |
1388 | ||
2d7edb92 | 1389 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
1dc32918 | 1390 | if ((hw->mng_cookie.status & |
2d7edb92 MC |
1391 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { |
1392 | e1000_update_mng_vlan(adapter); | |
1393 | } | |
1da177e4 | 1394 | |
e0aac5a2 AK |
1395 | /* before we allocate an interrupt, we must be ready to handle it. |
1396 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt | |
1397 | * as soon as we call pci_request_irq, so we have to setup our | |
1398 | * clean_rx handler before we do so. */ | |
1399 | e1000_configure(adapter); | |
1400 | ||
1401 | err = e1000_request_irq(adapter); | |
1402 | if (err) | |
1403 | goto err_req_irq; | |
1404 | ||
1405 | /* From here on the code is the same as e1000_up() */ | |
1406 | clear_bit(__E1000_DOWN, &adapter->flags); | |
1407 | ||
bea3348e | 1408 | napi_enable(&adapter->napi); |
47313054 | 1409 | |
e0aac5a2 AK |
1410 | e1000_irq_enable(adapter); |
1411 | ||
076152d5 BH |
1412 | netif_start_queue(netdev); |
1413 | ||
e0aac5a2 | 1414 | /* fire a link status change interrupt to start the watchdog */ |
1dc32918 | 1415 | ew32(ICS, E1000_ICS_LSC); |
e0aac5a2 | 1416 | |
1da177e4 LT |
1417 | return E1000_SUCCESS; |
1418 | ||
b5bf28cd | 1419 | err_req_irq: |
e0aac5a2 | 1420 | e1000_power_down_phy(adapter); |
581d708e | 1421 | e1000_free_all_rx_resources(adapter); |
1da177e4 | 1422 | err_setup_rx: |
581d708e | 1423 | e1000_free_all_tx_resources(adapter); |
1da177e4 LT |
1424 | err_setup_tx: |
1425 | e1000_reset(adapter); | |
1426 | ||
1427 | return err; | |
1428 | } | |
1429 | ||
1430 | /** | |
1431 | * e1000_close - Disables a network interface | |
1432 | * @netdev: network interface device structure | |
1433 | * | |
1434 | * Returns 0, this is not allowed to fail | |
1435 | * | |
1436 | * The close entry point is called when an interface is de-activated | |
1437 | * by the OS. The hardware is still under the drivers control, but | |
1438 | * needs to be disabled. A global MAC reset is issued to stop the | |
1439 | * hardware, and all transmit and receive resources are freed. | |
1440 | **/ | |
1441 | ||
64798845 | 1442 | static int e1000_close(struct net_device *netdev) |
1da177e4 | 1443 | { |
60490fe0 | 1444 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 1445 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 1446 | |
2db10a08 | 1447 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
1da177e4 | 1448 | e1000_down(adapter); |
79f05bf0 | 1449 | e1000_power_down_phy(adapter); |
2db10a08 | 1450 | e1000_free_irq(adapter); |
1da177e4 | 1451 | |
581d708e MC |
1452 | e1000_free_all_tx_resources(adapter); |
1453 | e1000_free_all_rx_resources(adapter); | |
1da177e4 | 1454 | |
4666560a BA |
1455 | /* kill manageability vlan ID if supported, but not if a vlan with |
1456 | * the same ID is registered on the host OS (let 8021q kill it) */ | |
1dc32918 | 1457 | if ((hw->mng_cookie.status & |
4666560a | 1458 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
5622e404 | 1459 | !test_bit(adapter->mng_vlan_id, adapter->active_vlans)) { |
2d7edb92 MC |
1460 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
1461 | } | |
b55ccb35 | 1462 | |
1da177e4 LT |
1463 | return 0; |
1464 | } | |
1465 | ||
1466 | /** | |
1467 | * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary | |
1468 | * @adapter: address of board private structure | |
2d7edb92 MC |
1469 | * @start: address of beginning of memory |
1470 | * @len: length of memory | |
1da177e4 | 1471 | **/ |
64798845 JP |
1472 | static bool e1000_check_64k_bound(struct e1000_adapter *adapter, void *start, |
1473 | unsigned long len) | |
1da177e4 | 1474 | { |
1dc32918 | 1475 | struct e1000_hw *hw = &adapter->hw; |
e982f17c | 1476 | unsigned long begin = (unsigned long)start; |
1da177e4 LT |
1477 | unsigned long end = begin + len; |
1478 | ||
2648345f MC |
1479 | /* First rev 82545 and 82546 need to not allow any memory |
1480 | * write location to cross 64k boundary due to errata 23 */ | |
1dc32918 | 1481 | if (hw->mac_type == e1000_82545 || |
5377a416 | 1482 | hw->mac_type == e1000_ce4100 || |
1dc32918 | 1483 | hw->mac_type == e1000_82546) { |
c3033b01 | 1484 | return ((begin ^ (end - 1)) >> 16) != 0 ? false : true; |
1da177e4 LT |
1485 | } |
1486 | ||
c3033b01 | 1487 | return true; |
1da177e4 LT |
1488 | } |
1489 | ||
1490 | /** | |
1491 | * e1000_setup_tx_resources - allocate Tx resources (Descriptors) | |
1492 | * @adapter: board private structure | |
581d708e | 1493 | * @txdr: tx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1494 | * |
1495 | * Return 0 on success, negative on failure | |
1496 | **/ | |
1497 | ||
64798845 JP |
1498 | static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
1499 | struct e1000_tx_ring *txdr) | |
1da177e4 | 1500 | { |
1da177e4 LT |
1501 | struct pci_dev *pdev = adapter->pdev; |
1502 | int size; | |
1503 | ||
1504 | size = sizeof(struct e1000_buffer) * txdr->count; | |
89bf67f1 | 1505 | txdr->buffer_info = vzalloc(size); |
96838a40 | 1506 | if (!txdr->buffer_info) { |
feb8f478 ET |
1507 | e_err(probe, "Unable to allocate memory for the Tx descriptor " |
1508 | "ring\n"); | |
1da177e4 LT |
1509 | return -ENOMEM; |
1510 | } | |
1da177e4 LT |
1511 | |
1512 | /* round up to nearest 4K */ | |
1513 | ||
1514 | txdr->size = txdr->count * sizeof(struct e1000_tx_desc); | |
9099cfb9 | 1515 | txdr->size = ALIGN(txdr->size, 4096); |
1da177e4 | 1516 | |
b16f53be NN |
1517 | txdr->desc = dma_alloc_coherent(&pdev->dev, txdr->size, &txdr->dma, |
1518 | GFP_KERNEL); | |
96838a40 | 1519 | if (!txdr->desc) { |
1da177e4 | 1520 | setup_tx_desc_die: |
1da177e4 | 1521 | vfree(txdr->buffer_info); |
feb8f478 ET |
1522 | e_err(probe, "Unable to allocate memory for the Tx descriptor " |
1523 | "ring\n"); | |
1da177e4 LT |
1524 | return -ENOMEM; |
1525 | } | |
1526 | ||
2648345f | 1527 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1528 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
1529 | void *olddesc = txdr->desc; | |
1530 | dma_addr_t olddma = txdr->dma; | |
feb8f478 | 1531 | e_err(tx_err, "txdr align check failed: %u bytes at %p\n", |
675ad473 | 1532 | txdr->size, txdr->desc); |
2648345f | 1533 | /* Try again, without freeing the previous */ |
b16f53be NN |
1534 | txdr->desc = dma_alloc_coherent(&pdev->dev, txdr->size, |
1535 | &txdr->dma, GFP_KERNEL); | |
2648345f | 1536 | /* Failed allocation, critical failure */ |
96838a40 | 1537 | if (!txdr->desc) { |
b16f53be NN |
1538 | dma_free_coherent(&pdev->dev, txdr->size, olddesc, |
1539 | olddma); | |
1da177e4 LT |
1540 | goto setup_tx_desc_die; |
1541 | } | |
1542 | ||
1543 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { | |
1544 | /* give up */ | |
b16f53be NN |
1545 | dma_free_coherent(&pdev->dev, txdr->size, txdr->desc, |
1546 | txdr->dma); | |
1547 | dma_free_coherent(&pdev->dev, txdr->size, olddesc, | |
1548 | olddma); | |
feb8f478 | 1549 | e_err(probe, "Unable to allocate aligned memory " |
675ad473 | 1550 | "for the transmit descriptor ring\n"); |
1da177e4 LT |
1551 | vfree(txdr->buffer_info); |
1552 | return -ENOMEM; | |
1553 | } else { | |
2648345f | 1554 | /* Free old allocation, new allocation was successful */ |
b16f53be NN |
1555 | dma_free_coherent(&pdev->dev, txdr->size, olddesc, |
1556 | olddma); | |
1da177e4 LT |
1557 | } |
1558 | } | |
1559 | memset(txdr->desc, 0, txdr->size); | |
1560 | ||
1561 | txdr->next_to_use = 0; | |
1562 | txdr->next_to_clean = 0; | |
1563 | ||
1564 | return 0; | |
1565 | } | |
1566 | ||
581d708e MC |
1567 | /** |
1568 | * e1000_setup_all_tx_resources - wrapper to allocate Tx resources | |
1569 | * (Descriptors) for all queues | |
1570 | * @adapter: board private structure | |
1571 | * | |
581d708e MC |
1572 | * Return 0 on success, negative on failure |
1573 | **/ | |
1574 | ||
64798845 | 1575 | int e1000_setup_all_tx_resources(struct e1000_adapter *adapter) |
581d708e MC |
1576 | { |
1577 | int i, err = 0; | |
1578 | ||
f56799ea | 1579 | for (i = 0; i < adapter->num_tx_queues; i++) { |
581d708e MC |
1580 | err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
1581 | if (err) { | |
feb8f478 | 1582 | e_err(probe, "Allocation for Tx Queue %u failed\n", i); |
3fbbc72e VA |
1583 | for (i-- ; i >= 0; i--) |
1584 | e1000_free_tx_resources(adapter, | |
1585 | &adapter->tx_ring[i]); | |
581d708e MC |
1586 | break; |
1587 | } | |
1588 | } | |
1589 | ||
1590 | return err; | |
1591 | } | |
1592 | ||
1da177e4 LT |
1593 | /** |
1594 | * e1000_configure_tx - Configure 8254x Transmit Unit after Reset | |
1595 | * @adapter: board private structure | |
1596 | * | |
1597 | * Configure the Tx unit of the MAC after a reset. | |
1598 | **/ | |
1599 | ||
64798845 | 1600 | static void e1000_configure_tx(struct e1000_adapter *adapter) |
1da177e4 | 1601 | { |
406874a7 | 1602 | u64 tdba; |
581d708e | 1603 | struct e1000_hw *hw = &adapter->hw; |
1532ecea | 1604 | u32 tdlen, tctl, tipg; |
406874a7 | 1605 | u32 ipgr1, ipgr2; |
1da177e4 LT |
1606 | |
1607 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1608 | ||
f56799ea | 1609 | switch (adapter->num_tx_queues) { |
24025e4e MC |
1610 | case 1: |
1611 | default: | |
581d708e MC |
1612 | tdba = adapter->tx_ring[0].dma; |
1613 | tdlen = adapter->tx_ring[0].count * | |
1614 | sizeof(struct e1000_tx_desc); | |
1dc32918 JP |
1615 | ew32(TDLEN, tdlen); |
1616 | ew32(TDBAH, (tdba >> 32)); | |
1617 | ew32(TDBAL, (tdba & 0x00000000ffffffffULL)); | |
1618 | ew32(TDT, 0); | |
1619 | ew32(TDH, 0); | |
6a951698 AK |
1620 | adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH); |
1621 | adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT); | |
24025e4e MC |
1622 | break; |
1623 | } | |
1da177e4 LT |
1624 | |
1625 | /* Set the default values for the Tx Inter Packet Gap timer */ | |
1532ecea | 1626 | if ((hw->media_type == e1000_media_type_fiber || |
d89b6c67 | 1627 | hw->media_type == e1000_media_type_internal_serdes)) |
0fadb059 JK |
1628 | tipg = DEFAULT_82543_TIPG_IPGT_FIBER; |
1629 | else | |
1630 | tipg = DEFAULT_82543_TIPG_IPGT_COPPER; | |
1631 | ||
581d708e | 1632 | switch (hw->mac_type) { |
1da177e4 LT |
1633 | case e1000_82542_rev2_0: |
1634 | case e1000_82542_rev2_1: | |
1635 | tipg = DEFAULT_82542_TIPG_IPGT; | |
0fadb059 JK |
1636 | ipgr1 = DEFAULT_82542_TIPG_IPGR1; |
1637 | ipgr2 = DEFAULT_82542_TIPG_IPGR2; | |
1da177e4 LT |
1638 | break; |
1639 | default: | |
0fadb059 JK |
1640 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
1641 | ipgr2 = DEFAULT_82543_TIPG_IPGR2; | |
1642 | break; | |
1da177e4 | 1643 | } |
0fadb059 JK |
1644 | tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; |
1645 | tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; | |
1dc32918 | 1646 | ew32(TIPG, tipg); |
1da177e4 LT |
1647 | |
1648 | /* Set the Tx Interrupt Delay register */ | |
1649 | ||
1dc32918 | 1650 | ew32(TIDV, adapter->tx_int_delay); |
581d708e | 1651 | if (hw->mac_type >= e1000_82540) |
1dc32918 | 1652 | ew32(TADV, adapter->tx_abs_int_delay); |
1da177e4 LT |
1653 | |
1654 | /* Program the Transmit Control Register */ | |
1655 | ||
1dc32918 | 1656 | tctl = er32(TCTL); |
1da177e4 | 1657 | tctl &= ~E1000_TCTL_CT; |
7e6c9861 | 1658 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
1da177e4 LT |
1659 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
1660 | ||
581d708e | 1661 | e1000_config_collision_dist(hw); |
1da177e4 LT |
1662 | |
1663 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
6a042dab JB |
1664 | adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; |
1665 | ||
1666 | /* only set IDE if we are delaying interrupts using the timers */ | |
1667 | if (adapter->tx_int_delay) | |
1668 | adapter->txd_cmd |= E1000_TXD_CMD_IDE; | |
1da177e4 | 1669 | |
581d708e | 1670 | if (hw->mac_type < e1000_82543) |
1da177e4 LT |
1671 | adapter->txd_cmd |= E1000_TXD_CMD_RPS; |
1672 | else | |
1673 | adapter->txd_cmd |= E1000_TXD_CMD_RS; | |
1674 | ||
1675 | /* Cache if we're 82544 running in PCI-X because we'll | |
1676 | * need this to apply a workaround later in the send path. */ | |
581d708e MC |
1677 | if (hw->mac_type == e1000_82544 && |
1678 | hw->bus_type == e1000_bus_type_pcix) | |
1da177e4 | 1679 | adapter->pcix_82544 = 1; |
7e6c9861 | 1680 | |
1dc32918 | 1681 | ew32(TCTL, tctl); |
7e6c9861 | 1682 | |
1da177e4 LT |
1683 | } |
1684 | ||
1685 | /** | |
1686 | * e1000_setup_rx_resources - allocate Rx resources (Descriptors) | |
1687 | * @adapter: board private structure | |
581d708e | 1688 | * @rxdr: rx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1689 | * |
1690 | * Returns 0 on success, negative on failure | |
1691 | **/ | |
1692 | ||
64798845 JP |
1693 | static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
1694 | struct e1000_rx_ring *rxdr) | |
1da177e4 | 1695 | { |
1da177e4 | 1696 | struct pci_dev *pdev = adapter->pdev; |
2d7edb92 | 1697 | int size, desc_len; |
1da177e4 LT |
1698 | |
1699 | size = sizeof(struct e1000_buffer) * rxdr->count; | |
89bf67f1 | 1700 | rxdr->buffer_info = vzalloc(size); |
581d708e | 1701 | if (!rxdr->buffer_info) { |
feb8f478 ET |
1702 | e_err(probe, "Unable to allocate memory for the Rx descriptor " |
1703 | "ring\n"); | |
1da177e4 LT |
1704 | return -ENOMEM; |
1705 | } | |
1da177e4 | 1706 | |
1532ecea | 1707 | desc_len = sizeof(struct e1000_rx_desc); |
2d7edb92 | 1708 | |
1da177e4 LT |
1709 | /* Round up to nearest 4K */ |
1710 | ||
2d7edb92 | 1711 | rxdr->size = rxdr->count * desc_len; |
9099cfb9 | 1712 | rxdr->size = ALIGN(rxdr->size, 4096); |
1da177e4 | 1713 | |
b16f53be NN |
1714 | rxdr->desc = dma_alloc_coherent(&pdev->dev, rxdr->size, &rxdr->dma, |
1715 | GFP_KERNEL); | |
1da177e4 | 1716 | |
581d708e | 1717 | if (!rxdr->desc) { |
feb8f478 ET |
1718 | e_err(probe, "Unable to allocate memory for the Rx descriptor " |
1719 | "ring\n"); | |
1da177e4 | 1720 | setup_rx_desc_die: |
1da177e4 LT |
1721 | vfree(rxdr->buffer_info); |
1722 | return -ENOMEM; | |
1723 | } | |
1724 | ||
2648345f | 1725 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1726 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
1727 | void *olddesc = rxdr->desc; | |
1728 | dma_addr_t olddma = rxdr->dma; | |
feb8f478 | 1729 | e_err(rx_err, "rxdr align check failed: %u bytes at %p\n", |
675ad473 | 1730 | rxdr->size, rxdr->desc); |
2648345f | 1731 | /* Try again, without freeing the previous */ |
b16f53be NN |
1732 | rxdr->desc = dma_alloc_coherent(&pdev->dev, rxdr->size, |
1733 | &rxdr->dma, GFP_KERNEL); | |
2648345f | 1734 | /* Failed allocation, critical failure */ |
581d708e | 1735 | if (!rxdr->desc) { |
b16f53be NN |
1736 | dma_free_coherent(&pdev->dev, rxdr->size, olddesc, |
1737 | olddma); | |
feb8f478 ET |
1738 | e_err(probe, "Unable to allocate memory for the Rx " |
1739 | "descriptor ring\n"); | |
1da177e4 LT |
1740 | goto setup_rx_desc_die; |
1741 | } | |
1742 | ||
1743 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { | |
1744 | /* give up */ | |
b16f53be NN |
1745 | dma_free_coherent(&pdev->dev, rxdr->size, rxdr->desc, |
1746 | rxdr->dma); | |
1747 | dma_free_coherent(&pdev->dev, rxdr->size, olddesc, | |
1748 | olddma); | |
feb8f478 ET |
1749 | e_err(probe, "Unable to allocate aligned memory for " |
1750 | "the Rx descriptor ring\n"); | |
581d708e | 1751 | goto setup_rx_desc_die; |
1da177e4 | 1752 | } else { |
2648345f | 1753 | /* Free old allocation, new allocation was successful */ |
b16f53be NN |
1754 | dma_free_coherent(&pdev->dev, rxdr->size, olddesc, |
1755 | olddma); | |
1da177e4 LT |
1756 | } |
1757 | } | |
1758 | memset(rxdr->desc, 0, rxdr->size); | |
1759 | ||
1760 | rxdr->next_to_clean = 0; | |
1761 | rxdr->next_to_use = 0; | |
edbbb3ca | 1762 | rxdr->rx_skb_top = NULL; |
1da177e4 LT |
1763 | |
1764 | return 0; | |
1765 | } | |
1766 | ||
581d708e MC |
1767 | /** |
1768 | * e1000_setup_all_rx_resources - wrapper to allocate Rx resources | |
1769 | * (Descriptors) for all queues | |
1770 | * @adapter: board private structure | |
1771 | * | |
581d708e MC |
1772 | * Return 0 on success, negative on failure |
1773 | **/ | |
1774 | ||
64798845 | 1775 | int e1000_setup_all_rx_resources(struct e1000_adapter *adapter) |
581d708e MC |
1776 | { |
1777 | int i, err = 0; | |
1778 | ||
f56799ea | 1779 | for (i = 0; i < adapter->num_rx_queues; i++) { |
581d708e MC |
1780 | err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
1781 | if (err) { | |
feb8f478 | 1782 | e_err(probe, "Allocation for Rx Queue %u failed\n", i); |
3fbbc72e VA |
1783 | for (i-- ; i >= 0; i--) |
1784 | e1000_free_rx_resources(adapter, | |
1785 | &adapter->rx_ring[i]); | |
581d708e MC |
1786 | break; |
1787 | } | |
1788 | } | |
1789 | ||
1790 | return err; | |
1791 | } | |
1792 | ||
1da177e4 | 1793 | /** |
2648345f | 1794 | * e1000_setup_rctl - configure the receive control registers |
1da177e4 LT |
1795 | * @adapter: Board private structure |
1796 | **/ | |
64798845 | 1797 | static void e1000_setup_rctl(struct e1000_adapter *adapter) |
1da177e4 | 1798 | { |
1dc32918 | 1799 | struct e1000_hw *hw = &adapter->hw; |
630b25cd | 1800 | u32 rctl; |
1da177e4 | 1801 | |
1dc32918 | 1802 | rctl = er32(RCTL); |
1da177e4 LT |
1803 | |
1804 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
1805 | ||
d5bc77a2 DN |
1806 | rctl |= E1000_RCTL_BAM | E1000_RCTL_LBM_NO | |
1807 | E1000_RCTL_RDMTS_HALF | | |
1dc32918 | 1808 | (hw->mc_filter_type << E1000_RCTL_MO_SHIFT); |
1da177e4 | 1809 | |
1dc32918 | 1810 | if (hw->tbi_compatibility_on == 1) |
1da177e4 LT |
1811 | rctl |= E1000_RCTL_SBP; |
1812 | else | |
1813 | rctl &= ~E1000_RCTL_SBP; | |
1814 | ||
2d7edb92 MC |
1815 | if (adapter->netdev->mtu <= ETH_DATA_LEN) |
1816 | rctl &= ~E1000_RCTL_LPE; | |
1817 | else | |
1818 | rctl |= E1000_RCTL_LPE; | |
1819 | ||
1da177e4 | 1820 | /* Setup buffer sizes */ |
9e2feace AK |
1821 | rctl &= ~E1000_RCTL_SZ_4096; |
1822 | rctl |= E1000_RCTL_BSEX; | |
1823 | switch (adapter->rx_buffer_len) { | |
a1415ee6 JK |
1824 | case E1000_RXBUFFER_2048: |
1825 | default: | |
1826 | rctl |= E1000_RCTL_SZ_2048; | |
1827 | rctl &= ~E1000_RCTL_BSEX; | |
1828 | break; | |
1829 | case E1000_RXBUFFER_4096: | |
1830 | rctl |= E1000_RCTL_SZ_4096; | |
1831 | break; | |
1832 | case E1000_RXBUFFER_8192: | |
1833 | rctl |= E1000_RCTL_SZ_8192; | |
1834 | break; | |
1835 | case E1000_RXBUFFER_16384: | |
1836 | rctl |= E1000_RCTL_SZ_16384; | |
1837 | break; | |
2d7edb92 MC |
1838 | } |
1839 | ||
1dc32918 | 1840 | ew32(RCTL, rctl); |
1da177e4 LT |
1841 | } |
1842 | ||
1843 | /** | |
1844 | * e1000_configure_rx - Configure 8254x Receive Unit after Reset | |
1845 | * @adapter: board private structure | |
1846 | * | |
1847 | * Configure the Rx unit of the MAC after a reset. | |
1848 | **/ | |
1849 | ||
64798845 | 1850 | static void e1000_configure_rx(struct e1000_adapter *adapter) |
1da177e4 | 1851 | { |
406874a7 | 1852 | u64 rdba; |
581d708e | 1853 | struct e1000_hw *hw = &adapter->hw; |
1532ecea | 1854 | u32 rdlen, rctl, rxcsum; |
2d7edb92 | 1855 | |
edbbb3ca JB |
1856 | if (adapter->netdev->mtu > ETH_DATA_LEN) { |
1857 | rdlen = adapter->rx_ring[0].count * | |
1858 | sizeof(struct e1000_rx_desc); | |
1859 | adapter->clean_rx = e1000_clean_jumbo_rx_irq; | |
1860 | adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers; | |
1861 | } else { | |
1862 | rdlen = adapter->rx_ring[0].count * | |
1863 | sizeof(struct e1000_rx_desc); | |
1864 | adapter->clean_rx = e1000_clean_rx_irq; | |
1865 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers; | |
1866 | } | |
1da177e4 LT |
1867 | |
1868 | /* disable receives while setting up the descriptors */ | |
1dc32918 JP |
1869 | rctl = er32(RCTL); |
1870 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
1da177e4 LT |
1871 | |
1872 | /* set the Receive Delay Timer Register */ | |
1dc32918 | 1873 | ew32(RDTR, adapter->rx_int_delay); |
1da177e4 | 1874 | |
581d708e | 1875 | if (hw->mac_type >= e1000_82540) { |
1dc32918 | 1876 | ew32(RADV, adapter->rx_abs_int_delay); |
835bb129 | 1877 | if (adapter->itr_setting != 0) |
1dc32918 | 1878 | ew32(ITR, 1000000000 / (adapter->itr * 256)); |
1da177e4 LT |
1879 | } |
1880 | ||
581d708e MC |
1881 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
1882 | * the Base and Length of the Rx Descriptor Ring */ | |
f56799ea | 1883 | switch (adapter->num_rx_queues) { |
24025e4e MC |
1884 | case 1: |
1885 | default: | |
581d708e | 1886 | rdba = adapter->rx_ring[0].dma; |
1dc32918 JP |
1887 | ew32(RDLEN, rdlen); |
1888 | ew32(RDBAH, (rdba >> 32)); | |
1889 | ew32(RDBAL, (rdba & 0x00000000ffffffffULL)); | |
1890 | ew32(RDT, 0); | |
1891 | ew32(RDH, 0); | |
6a951698 AK |
1892 | adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH); |
1893 | adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT); | |
581d708e | 1894 | break; |
24025e4e MC |
1895 | } |
1896 | ||
1da177e4 | 1897 | /* Enable 82543 Receive Checksum Offload for TCP and UDP */ |
581d708e | 1898 | if (hw->mac_type >= e1000_82543) { |
1dc32918 | 1899 | rxcsum = er32(RXCSUM); |
630b25cd | 1900 | if (adapter->rx_csum) |
2d7edb92 | 1901 | rxcsum |= E1000_RXCSUM_TUOFL; |
630b25cd | 1902 | else |
2d7edb92 | 1903 | /* don't need to clear IPPCSE as it defaults to 0 */ |
630b25cd | 1904 | rxcsum &= ~E1000_RXCSUM_TUOFL; |
1dc32918 | 1905 | ew32(RXCSUM, rxcsum); |
1da177e4 LT |
1906 | } |
1907 | ||
1908 | /* Enable Receives */ | |
d5bc77a2 | 1909 | ew32(RCTL, rctl | E1000_RCTL_EN); |
1da177e4 LT |
1910 | } |
1911 | ||
1912 | /** | |
581d708e | 1913 | * e1000_free_tx_resources - Free Tx Resources per Queue |
1da177e4 | 1914 | * @adapter: board private structure |
581d708e | 1915 | * @tx_ring: Tx descriptor ring for a specific queue |
1da177e4 LT |
1916 | * |
1917 | * Free all transmit software resources | |
1918 | **/ | |
1919 | ||
64798845 JP |
1920 | static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
1921 | struct e1000_tx_ring *tx_ring) | |
1da177e4 LT |
1922 | { |
1923 | struct pci_dev *pdev = adapter->pdev; | |
1924 | ||
581d708e | 1925 | e1000_clean_tx_ring(adapter, tx_ring); |
1da177e4 | 1926 | |
581d708e MC |
1927 | vfree(tx_ring->buffer_info); |
1928 | tx_ring->buffer_info = NULL; | |
1da177e4 | 1929 | |
b16f53be NN |
1930 | dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, |
1931 | tx_ring->dma); | |
1da177e4 | 1932 | |
581d708e MC |
1933 | tx_ring->desc = NULL; |
1934 | } | |
1935 | ||
1936 | /** | |
1937 | * e1000_free_all_tx_resources - Free Tx Resources for All Queues | |
1938 | * @adapter: board private structure | |
1939 | * | |
1940 | * Free all transmit software resources | |
1941 | **/ | |
1942 | ||
64798845 | 1943 | void e1000_free_all_tx_resources(struct e1000_adapter *adapter) |
581d708e MC |
1944 | { |
1945 | int i; | |
1946 | ||
f56799ea | 1947 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 1948 | e1000_free_tx_resources(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
1949 | } |
1950 | ||
64798845 JP |
1951 | static void e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, |
1952 | struct e1000_buffer *buffer_info) | |
1da177e4 | 1953 | { |
602c0554 AD |
1954 | if (buffer_info->dma) { |
1955 | if (buffer_info->mapped_as_page) | |
b16f53be NN |
1956 | dma_unmap_page(&adapter->pdev->dev, buffer_info->dma, |
1957 | buffer_info->length, DMA_TO_DEVICE); | |
602c0554 | 1958 | else |
b16f53be | 1959 | dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, |
602c0554 | 1960 | buffer_info->length, |
b16f53be | 1961 | DMA_TO_DEVICE); |
602c0554 AD |
1962 | buffer_info->dma = 0; |
1963 | } | |
a9ebadd6 | 1964 | if (buffer_info->skb) { |
1da177e4 | 1965 | dev_kfree_skb_any(buffer_info->skb); |
a9ebadd6 JB |
1966 | buffer_info->skb = NULL; |
1967 | } | |
37e73df8 | 1968 | buffer_info->time_stamp = 0; |
a9ebadd6 | 1969 | /* buffer_info must be completely set up in the transmit path */ |
1da177e4 LT |
1970 | } |
1971 | ||
1972 | /** | |
1973 | * e1000_clean_tx_ring - Free Tx Buffers | |
1974 | * @adapter: board private structure | |
581d708e | 1975 | * @tx_ring: ring to be cleaned |
1da177e4 LT |
1976 | **/ |
1977 | ||
64798845 JP |
1978 | static void e1000_clean_tx_ring(struct e1000_adapter *adapter, |
1979 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 1980 | { |
1dc32918 | 1981 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
1982 | struct e1000_buffer *buffer_info; |
1983 | unsigned long size; | |
1984 | unsigned int i; | |
1985 | ||
1986 | /* Free all the Tx ring sk_buffs */ | |
1987 | ||
96838a40 | 1988 | for (i = 0; i < tx_ring->count; i++) { |
1da177e4 LT |
1989 | buffer_info = &tx_ring->buffer_info[i]; |
1990 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); | |
1991 | } | |
1992 | ||
1993 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
1994 | memset(tx_ring->buffer_info, 0, size); | |
1995 | ||
1996 | /* Zero out the descriptor ring */ | |
1997 | ||
1998 | memset(tx_ring->desc, 0, tx_ring->size); | |
1999 | ||
2000 | tx_ring->next_to_use = 0; | |
2001 | tx_ring->next_to_clean = 0; | |
fd803241 | 2002 | tx_ring->last_tx_tso = 0; |
1da177e4 | 2003 | |
1dc32918 JP |
2004 | writel(0, hw->hw_addr + tx_ring->tdh); |
2005 | writel(0, hw->hw_addr + tx_ring->tdt); | |
581d708e MC |
2006 | } |
2007 | ||
2008 | /** | |
2009 | * e1000_clean_all_tx_rings - Free Tx Buffers for all queues | |
2010 | * @adapter: board private structure | |
2011 | **/ | |
2012 | ||
64798845 | 2013 | static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter) |
581d708e MC |
2014 | { |
2015 | int i; | |
2016 | ||
f56799ea | 2017 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 2018 | e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
2019 | } |
2020 | ||
2021 | /** | |
2022 | * e1000_free_rx_resources - Free Rx Resources | |
2023 | * @adapter: board private structure | |
581d708e | 2024 | * @rx_ring: ring to clean the resources from |
1da177e4 LT |
2025 | * |
2026 | * Free all receive software resources | |
2027 | **/ | |
2028 | ||
64798845 JP |
2029 | static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
2030 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 2031 | { |
1da177e4 LT |
2032 | struct pci_dev *pdev = adapter->pdev; |
2033 | ||
581d708e | 2034 | e1000_clean_rx_ring(adapter, rx_ring); |
1da177e4 LT |
2035 | |
2036 | vfree(rx_ring->buffer_info); | |
2037 | rx_ring->buffer_info = NULL; | |
2038 | ||
b16f53be NN |
2039 | dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, |
2040 | rx_ring->dma); | |
1da177e4 LT |
2041 | |
2042 | rx_ring->desc = NULL; | |
2043 | } | |
2044 | ||
2045 | /** | |
581d708e | 2046 | * e1000_free_all_rx_resources - Free Rx Resources for All Queues |
1da177e4 | 2047 | * @adapter: board private structure |
581d708e MC |
2048 | * |
2049 | * Free all receive software resources | |
2050 | **/ | |
2051 | ||
64798845 | 2052 | void e1000_free_all_rx_resources(struct e1000_adapter *adapter) |
581d708e MC |
2053 | { |
2054 | int i; | |
2055 | ||
f56799ea | 2056 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e MC |
2057 | e1000_free_rx_resources(adapter, &adapter->rx_ring[i]); |
2058 | } | |
2059 | ||
2060 | /** | |
2061 | * e1000_clean_rx_ring - Free Rx Buffers per Queue | |
2062 | * @adapter: board private structure | |
2063 | * @rx_ring: ring to free buffers from | |
1da177e4 LT |
2064 | **/ |
2065 | ||
64798845 JP |
2066 | static void e1000_clean_rx_ring(struct e1000_adapter *adapter, |
2067 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 2068 | { |
1dc32918 | 2069 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
2070 | struct e1000_buffer *buffer_info; |
2071 | struct pci_dev *pdev = adapter->pdev; | |
2072 | unsigned long size; | |
630b25cd | 2073 | unsigned int i; |
1da177e4 LT |
2074 | |
2075 | /* Free all the Rx ring sk_buffs */ | |
96838a40 | 2076 | for (i = 0; i < rx_ring->count; i++) { |
1da177e4 | 2077 | buffer_info = &rx_ring->buffer_info[i]; |
edbbb3ca JB |
2078 | if (buffer_info->dma && |
2079 | adapter->clean_rx == e1000_clean_rx_irq) { | |
b16f53be | 2080 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
edbbb3ca | 2081 | buffer_info->length, |
b16f53be | 2082 | DMA_FROM_DEVICE); |
edbbb3ca JB |
2083 | } else if (buffer_info->dma && |
2084 | adapter->clean_rx == e1000_clean_jumbo_rx_irq) { | |
b16f53be NN |
2085 | dma_unmap_page(&pdev->dev, buffer_info->dma, |
2086 | buffer_info->length, | |
2087 | DMA_FROM_DEVICE); | |
679be3ba | 2088 | } |
1da177e4 | 2089 | |
679be3ba | 2090 | buffer_info->dma = 0; |
edbbb3ca JB |
2091 | if (buffer_info->page) { |
2092 | put_page(buffer_info->page); | |
2093 | buffer_info->page = NULL; | |
2094 | } | |
679be3ba | 2095 | if (buffer_info->skb) { |
1da177e4 LT |
2096 | dev_kfree_skb(buffer_info->skb); |
2097 | buffer_info->skb = NULL; | |
997f5cbd | 2098 | } |
1da177e4 LT |
2099 | } |
2100 | ||
edbbb3ca JB |
2101 | /* there also may be some cached data from a chained receive */ |
2102 | if (rx_ring->rx_skb_top) { | |
2103 | dev_kfree_skb(rx_ring->rx_skb_top); | |
2104 | rx_ring->rx_skb_top = NULL; | |
2105 | } | |
2106 | ||
1da177e4 LT |
2107 | size = sizeof(struct e1000_buffer) * rx_ring->count; |
2108 | memset(rx_ring->buffer_info, 0, size); | |
2109 | ||
2110 | /* Zero out the descriptor ring */ | |
1da177e4 LT |
2111 | memset(rx_ring->desc, 0, rx_ring->size); |
2112 | ||
2113 | rx_ring->next_to_clean = 0; | |
2114 | rx_ring->next_to_use = 0; | |
2115 | ||
1dc32918 JP |
2116 | writel(0, hw->hw_addr + rx_ring->rdh); |
2117 | writel(0, hw->hw_addr + rx_ring->rdt); | |
581d708e MC |
2118 | } |
2119 | ||
2120 | /** | |
2121 | * e1000_clean_all_rx_rings - Free Rx Buffers for all queues | |
2122 | * @adapter: board private structure | |
2123 | **/ | |
2124 | ||
64798845 | 2125 | static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter) |
581d708e MC |
2126 | { |
2127 | int i; | |
2128 | ||
f56799ea | 2129 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e | 2130 | e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]); |
1da177e4 LT |
2131 | } |
2132 | ||
2133 | /* The 82542 2.0 (revision 2) needs to have the receive unit in reset | |
2134 | * and memory write and invalidate disabled for certain operations | |
2135 | */ | |
64798845 | 2136 | static void e1000_enter_82542_rst(struct e1000_adapter *adapter) |
1da177e4 | 2137 | { |
1dc32918 | 2138 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 2139 | struct net_device *netdev = adapter->netdev; |
406874a7 | 2140 | u32 rctl; |
1da177e4 | 2141 | |
1dc32918 | 2142 | e1000_pci_clear_mwi(hw); |
1da177e4 | 2143 | |
1dc32918 | 2144 | rctl = er32(RCTL); |
1da177e4 | 2145 | rctl |= E1000_RCTL_RST; |
1dc32918 JP |
2146 | ew32(RCTL, rctl); |
2147 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
2148 | mdelay(5); |
2149 | ||
96838a40 | 2150 | if (netif_running(netdev)) |
581d708e | 2151 | e1000_clean_all_rx_rings(adapter); |
1da177e4 LT |
2152 | } |
2153 | ||
64798845 | 2154 | static void e1000_leave_82542_rst(struct e1000_adapter *adapter) |
1da177e4 | 2155 | { |
1dc32918 | 2156 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 2157 | struct net_device *netdev = adapter->netdev; |
406874a7 | 2158 | u32 rctl; |
1da177e4 | 2159 | |
1dc32918 | 2160 | rctl = er32(RCTL); |
1da177e4 | 2161 | rctl &= ~E1000_RCTL_RST; |
1dc32918 JP |
2162 | ew32(RCTL, rctl); |
2163 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
2164 | mdelay(5); |
2165 | ||
1dc32918 JP |
2166 | if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE) |
2167 | e1000_pci_set_mwi(hw); | |
1da177e4 | 2168 | |
96838a40 | 2169 | if (netif_running(netdev)) { |
72d64a43 JK |
2170 | /* No need to loop, because 82542 supports only 1 queue */ |
2171 | struct e1000_rx_ring *ring = &adapter->rx_ring[0]; | |
7c4d3367 | 2172 | e1000_configure_rx(adapter); |
72d64a43 | 2173 | adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring)); |
1da177e4 LT |
2174 | } |
2175 | } | |
2176 | ||
2177 | /** | |
2178 | * e1000_set_mac - Change the Ethernet Address of the NIC | |
2179 | * @netdev: network interface device structure | |
2180 | * @p: pointer to an address structure | |
2181 | * | |
2182 | * Returns 0 on success, negative on failure | |
2183 | **/ | |
2184 | ||
64798845 | 2185 | static int e1000_set_mac(struct net_device *netdev, void *p) |
1da177e4 | 2186 | { |
60490fe0 | 2187 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 2188 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
2189 | struct sockaddr *addr = p; |
2190 | ||
96838a40 | 2191 | if (!is_valid_ether_addr(addr->sa_data)) |
1da177e4 LT |
2192 | return -EADDRNOTAVAIL; |
2193 | ||
2194 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2195 | ||
1dc32918 | 2196 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2197 | e1000_enter_82542_rst(adapter); |
2198 | ||
2199 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
1dc32918 | 2200 | memcpy(hw->mac_addr, addr->sa_data, netdev->addr_len); |
1da177e4 | 2201 | |
1dc32918 | 2202 | e1000_rar_set(hw, hw->mac_addr, 0); |
1da177e4 | 2203 | |
1dc32918 | 2204 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2205 | e1000_leave_82542_rst(adapter); |
2206 | ||
2207 | return 0; | |
2208 | } | |
2209 | ||
2210 | /** | |
db0ce50d | 2211 | * e1000_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set |
1da177e4 LT |
2212 | * @netdev: network interface device structure |
2213 | * | |
db0ce50d PM |
2214 | * The set_rx_mode entry point is called whenever the unicast or multicast |
2215 | * address lists or the network interface flags are updated. This routine is | |
2216 | * responsible for configuring the hardware for proper unicast, multicast, | |
1da177e4 LT |
2217 | * promiscuous mode, and all-multi behavior. |
2218 | **/ | |
2219 | ||
64798845 | 2220 | static void e1000_set_rx_mode(struct net_device *netdev) |
1da177e4 | 2221 | { |
60490fe0 | 2222 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 2223 | struct e1000_hw *hw = &adapter->hw; |
ccffad25 JP |
2224 | struct netdev_hw_addr *ha; |
2225 | bool use_uc = false; | |
406874a7 JP |
2226 | u32 rctl; |
2227 | u32 hash_value; | |
868d5309 | 2228 | int i, rar_entries = E1000_RAR_ENTRIES; |
1532ecea | 2229 | int mta_reg_count = E1000_NUM_MTA_REGISTERS; |
81c52285 JB |
2230 | u32 *mcarray = kcalloc(mta_reg_count, sizeof(u32), GFP_ATOMIC); |
2231 | ||
2232 | if (!mcarray) { | |
feb8f478 | 2233 | e_err(probe, "memory allocation failed\n"); |
81c52285 JB |
2234 | return; |
2235 | } | |
cd94dd0b | 2236 | |
2648345f MC |
2237 | /* Check for Promiscuous and All Multicast modes */ |
2238 | ||
1dc32918 | 2239 | rctl = er32(RCTL); |
1da177e4 | 2240 | |
96838a40 | 2241 | if (netdev->flags & IFF_PROMISC) { |
1da177e4 | 2242 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
746b9f02 | 2243 | rctl &= ~E1000_RCTL_VFE; |
1da177e4 | 2244 | } else { |
1532ecea | 2245 | if (netdev->flags & IFF_ALLMULTI) |
746b9f02 | 2246 | rctl |= E1000_RCTL_MPE; |
1532ecea | 2247 | else |
746b9f02 | 2248 | rctl &= ~E1000_RCTL_MPE; |
1532ecea | 2249 | /* Enable VLAN filter if there is a VLAN */ |
5622e404 | 2250 | if (e1000_vlan_used(adapter)) |
1532ecea | 2251 | rctl |= E1000_RCTL_VFE; |
db0ce50d PM |
2252 | } |
2253 | ||
32e7bfc4 | 2254 | if (netdev_uc_count(netdev) > rar_entries - 1) { |
db0ce50d PM |
2255 | rctl |= E1000_RCTL_UPE; |
2256 | } else if (!(netdev->flags & IFF_PROMISC)) { | |
2257 | rctl &= ~E1000_RCTL_UPE; | |
ccffad25 | 2258 | use_uc = true; |
1da177e4 LT |
2259 | } |
2260 | ||
1dc32918 | 2261 | ew32(RCTL, rctl); |
1da177e4 LT |
2262 | |
2263 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2264 | ||
96838a40 | 2265 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2266 | e1000_enter_82542_rst(adapter); |
2267 | ||
db0ce50d PM |
2268 | /* load the first 14 addresses into the exact filters 1-14. Unicast |
2269 | * addresses take precedence to avoid disabling unicast filtering | |
2270 | * when possible. | |
2271 | * | |
b595076a | 2272 | * RAR 0 is used for the station MAC address |
1da177e4 LT |
2273 | * if there are not 14 addresses, go ahead and clear the filters |
2274 | */ | |
ccffad25 JP |
2275 | i = 1; |
2276 | if (use_uc) | |
32e7bfc4 | 2277 | netdev_for_each_uc_addr(ha, netdev) { |
ccffad25 JP |
2278 | if (i == rar_entries) |
2279 | break; | |
2280 | e1000_rar_set(hw, ha->addr, i++); | |
2281 | } | |
2282 | ||
22bedad3 | 2283 | netdev_for_each_mc_addr(ha, netdev) { |
7a81e9f3 JP |
2284 | if (i == rar_entries) { |
2285 | /* load any remaining addresses into the hash table */ | |
2286 | u32 hash_reg, hash_bit, mta; | |
22bedad3 | 2287 | hash_value = e1000_hash_mc_addr(hw, ha->addr); |
7a81e9f3 JP |
2288 | hash_reg = (hash_value >> 5) & 0x7F; |
2289 | hash_bit = hash_value & 0x1F; | |
2290 | mta = (1 << hash_bit); | |
2291 | mcarray[hash_reg] |= mta; | |
10886af5 | 2292 | } else { |
22bedad3 | 2293 | e1000_rar_set(hw, ha->addr, i++); |
1da177e4 LT |
2294 | } |
2295 | } | |
2296 | ||
7a81e9f3 JP |
2297 | for (; i < rar_entries; i++) { |
2298 | E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); | |
2299 | E1000_WRITE_FLUSH(); | |
2300 | E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); | |
2301 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
2302 | } |
2303 | ||
81c52285 JB |
2304 | /* write the hash table completely, write from bottom to avoid |
2305 | * both stupid write combining chipsets, and flushing each write */ | |
2306 | for (i = mta_reg_count - 1; i >= 0 ; i--) { | |
2307 | /* | |
2308 | * If we are on an 82544 has an errata where writing odd | |
2309 | * offsets overwrites the previous even offset, but writing | |
2310 | * backwards over the range solves the issue by always | |
2311 | * writing the odd offset first | |
2312 | */ | |
2313 | E1000_WRITE_REG_ARRAY(hw, MTA, i, mcarray[i]); | |
2314 | } | |
2315 | E1000_WRITE_FLUSH(); | |
2316 | ||
96838a40 | 2317 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 | 2318 | e1000_leave_82542_rst(adapter); |
81c52285 JB |
2319 | |
2320 | kfree(mcarray); | |
1da177e4 LT |
2321 | } |
2322 | ||
a4010afe JB |
2323 | /** |
2324 | * e1000_update_phy_info_task - get phy info | |
2325 | * @work: work struct contained inside adapter struct | |
2326 | * | |
2327 | * Need to wait a few seconds after link up to get diagnostic information from | |
2328 | * the phy | |
2329 | */ | |
5cf42fcd JB |
2330 | static void e1000_update_phy_info_task(struct work_struct *work) |
2331 | { | |
2332 | struct e1000_adapter *adapter = container_of(work, | |
a4010afe JB |
2333 | struct e1000_adapter, |
2334 | phy_info_task.work); | |
0ef4eedc JB |
2335 | if (test_bit(__E1000_DOWN, &adapter->flags)) |
2336 | return; | |
2337 | mutex_lock(&adapter->mutex); | |
a4010afe | 2338 | e1000_phy_get_info(&adapter->hw, &adapter->phy_info); |
0ef4eedc | 2339 | mutex_unlock(&adapter->mutex); |
1da177e4 LT |
2340 | } |
2341 | ||
5cf42fcd JB |
2342 | /** |
2343 | * e1000_82547_tx_fifo_stall_task - task to complete work | |
2344 | * @work: work struct contained inside adapter struct | |
2345 | **/ | |
2346 | static void e1000_82547_tx_fifo_stall_task(struct work_struct *work) | |
2347 | { | |
2348 | struct e1000_adapter *adapter = container_of(work, | |
a4010afe JB |
2349 | struct e1000_adapter, |
2350 | fifo_stall_task.work); | |
1dc32918 | 2351 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 2352 | struct net_device *netdev = adapter->netdev; |
406874a7 | 2353 | u32 tctl; |
1da177e4 | 2354 | |
0ef4eedc JB |
2355 | if (test_bit(__E1000_DOWN, &adapter->flags)) |
2356 | return; | |
2357 | mutex_lock(&adapter->mutex); | |
96838a40 | 2358 | if (atomic_read(&adapter->tx_fifo_stall)) { |
1dc32918 JP |
2359 | if ((er32(TDT) == er32(TDH)) && |
2360 | (er32(TDFT) == er32(TDFH)) && | |
2361 | (er32(TDFTS) == er32(TDFHS))) { | |
2362 | tctl = er32(TCTL); | |
2363 | ew32(TCTL, tctl & ~E1000_TCTL_EN); | |
2364 | ew32(TDFT, adapter->tx_head_addr); | |
2365 | ew32(TDFH, adapter->tx_head_addr); | |
2366 | ew32(TDFTS, adapter->tx_head_addr); | |
2367 | ew32(TDFHS, adapter->tx_head_addr); | |
2368 | ew32(TCTL, tctl); | |
2369 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
2370 | |
2371 | adapter->tx_fifo_head = 0; | |
2372 | atomic_set(&adapter->tx_fifo_stall, 0); | |
2373 | netif_wake_queue(netdev); | |
baa34745 | 2374 | } else if (!test_bit(__E1000_DOWN, &adapter->flags)) { |
a4010afe | 2375 | schedule_delayed_work(&adapter->fifo_stall_task, 1); |
1da177e4 LT |
2376 | } |
2377 | } | |
0ef4eedc | 2378 | mutex_unlock(&adapter->mutex); |
1da177e4 LT |
2379 | } |
2380 | ||
b548192a | 2381 | bool e1000_has_link(struct e1000_adapter *adapter) |
be0f0719 JB |
2382 | { |
2383 | struct e1000_hw *hw = &adapter->hw; | |
2384 | bool link_active = false; | |
be0f0719 | 2385 | |
6d9e5130 NS |
2386 | /* get_link_status is set on LSC (link status) interrupt or rx |
2387 | * sequence error interrupt (except on intel ce4100). | |
2388 | * get_link_status will stay false until the | |
2389 | * e1000_check_for_link establishes link for copper adapters | |
2390 | * ONLY | |
be0f0719 JB |
2391 | */ |
2392 | switch (hw->media_type) { | |
2393 | case e1000_media_type_copper: | |
6d9e5130 NS |
2394 | if (hw->mac_type == e1000_ce4100) |
2395 | hw->get_link_status = 1; | |
be0f0719 | 2396 | if (hw->get_link_status) { |
120a5d0d | 2397 | e1000_check_for_link(hw); |
be0f0719 JB |
2398 | link_active = !hw->get_link_status; |
2399 | } else { | |
2400 | link_active = true; | |
2401 | } | |
2402 | break; | |
2403 | case e1000_media_type_fiber: | |
120a5d0d | 2404 | e1000_check_for_link(hw); |
be0f0719 JB |
2405 | link_active = !!(er32(STATUS) & E1000_STATUS_LU); |
2406 | break; | |
2407 | case e1000_media_type_internal_serdes: | |
120a5d0d | 2408 | e1000_check_for_link(hw); |
be0f0719 JB |
2409 | link_active = hw->serdes_has_link; |
2410 | break; | |
2411 | default: | |
2412 | break; | |
2413 | } | |
2414 | ||
2415 | return link_active; | |
2416 | } | |
2417 | ||
1da177e4 | 2418 | /** |
a4010afe JB |
2419 | * e1000_watchdog - work function |
2420 | * @work: work struct contained inside adapter struct | |
1da177e4 | 2421 | **/ |
a4010afe | 2422 | static void e1000_watchdog(struct work_struct *work) |
1da177e4 | 2423 | { |
a4010afe JB |
2424 | struct e1000_adapter *adapter = container_of(work, |
2425 | struct e1000_adapter, | |
2426 | watchdog_task.work); | |
1dc32918 | 2427 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 2428 | struct net_device *netdev = adapter->netdev; |
545c67c0 | 2429 | struct e1000_tx_ring *txdr = adapter->tx_ring; |
406874a7 | 2430 | u32 link, tctl; |
90fb5135 | 2431 | |
0ef4eedc JB |
2432 | if (test_bit(__E1000_DOWN, &adapter->flags)) |
2433 | return; | |
2434 | ||
2435 | mutex_lock(&adapter->mutex); | |
be0f0719 JB |
2436 | link = e1000_has_link(adapter); |
2437 | if ((netif_carrier_ok(netdev)) && link) | |
2438 | goto link_up; | |
1da177e4 | 2439 | |
96838a40 JB |
2440 | if (link) { |
2441 | if (!netif_carrier_ok(netdev)) { | |
406874a7 | 2442 | u32 ctrl; |
c3033b01 | 2443 | bool txb2b = true; |
be0f0719 | 2444 | /* update snapshot of PHY registers on LSC */ |
1dc32918 | 2445 | e1000_get_speed_and_duplex(hw, |
1da177e4 LT |
2446 | &adapter->link_speed, |
2447 | &adapter->link_duplex); | |
2448 | ||
1dc32918 | 2449 | ctrl = er32(CTRL); |
675ad473 ET |
2450 | pr_info("%s NIC Link is Up %d Mbps %s, " |
2451 | "Flow Control: %s\n", | |
2452 | netdev->name, | |
2453 | adapter->link_speed, | |
2454 | adapter->link_duplex == FULL_DUPLEX ? | |
2455 | "Full Duplex" : "Half Duplex", | |
2456 | ((ctrl & E1000_CTRL_TFCE) && (ctrl & | |
2457 | E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl & | |
2458 | E1000_CTRL_RFCE) ? "RX" : ((ctrl & | |
2459 | E1000_CTRL_TFCE) ? "TX" : "None"))); | |
1da177e4 | 2460 | |
39ca5f03 | 2461 | /* adjust timeout factor according to speed/duplex */ |
66a2b0a3 | 2462 | adapter->tx_timeout_factor = 1; |
7e6c9861 JK |
2463 | switch (adapter->link_speed) { |
2464 | case SPEED_10: | |
c3033b01 | 2465 | txb2b = false; |
be0f0719 | 2466 | adapter->tx_timeout_factor = 16; |
7e6c9861 JK |
2467 | break; |
2468 | case SPEED_100: | |
c3033b01 | 2469 | txb2b = false; |
7e6c9861 JK |
2470 | /* maybe add some timeout factor ? */ |
2471 | break; | |
2472 | } | |
2473 | ||
1532ecea | 2474 | /* enable transmits in the hardware */ |
1dc32918 | 2475 | tctl = er32(TCTL); |
7e6c9861 | 2476 | tctl |= E1000_TCTL_EN; |
1dc32918 | 2477 | ew32(TCTL, tctl); |
66a2b0a3 | 2478 | |
1da177e4 | 2479 | netif_carrier_on(netdev); |
baa34745 | 2480 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
a4010afe JB |
2481 | schedule_delayed_work(&adapter->phy_info_task, |
2482 | 2 * HZ); | |
1da177e4 LT |
2483 | adapter->smartspeed = 0; |
2484 | } | |
2485 | } else { | |
96838a40 | 2486 | if (netif_carrier_ok(netdev)) { |
1da177e4 LT |
2487 | adapter->link_speed = 0; |
2488 | adapter->link_duplex = 0; | |
675ad473 ET |
2489 | pr_info("%s NIC Link is Down\n", |
2490 | netdev->name); | |
1da177e4 | 2491 | netif_carrier_off(netdev); |
baa34745 JB |
2492 | |
2493 | if (!test_bit(__E1000_DOWN, &adapter->flags)) | |
a4010afe JB |
2494 | schedule_delayed_work(&adapter->phy_info_task, |
2495 | 2 * HZ); | |
1da177e4 LT |
2496 | } |
2497 | ||
2498 | e1000_smartspeed(adapter); | |
2499 | } | |
2500 | ||
be0f0719 | 2501 | link_up: |
1da177e4 LT |
2502 | e1000_update_stats(adapter); |
2503 | ||
1dc32918 | 2504 | hw->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
1da177e4 | 2505 | adapter->tpt_old = adapter->stats.tpt; |
1dc32918 | 2506 | hw->collision_delta = adapter->stats.colc - adapter->colc_old; |
1da177e4 LT |
2507 | adapter->colc_old = adapter->stats.colc; |
2508 | ||
2509 | adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; | |
2510 | adapter->gorcl_old = adapter->stats.gorcl; | |
2511 | adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; | |
2512 | adapter->gotcl_old = adapter->stats.gotcl; | |
2513 | ||
1dc32918 | 2514 | e1000_update_adaptive(hw); |
1da177e4 | 2515 | |
f56799ea | 2516 | if (!netif_carrier_ok(netdev)) { |
581d708e | 2517 | if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { |
1da177e4 LT |
2518 | /* We've lost link, so the controller stops DMA, |
2519 | * but we've got queued Tx work that's never going | |
2520 | * to get done, so reset controller to flush Tx. | |
2521 | * (Do the reset outside of interrupt context). */ | |
87041639 JK |
2522 | adapter->tx_timeout_count++; |
2523 | schedule_work(&adapter->reset_task); | |
0ef4eedc JB |
2524 | /* exit immediately since reset is imminent */ |
2525 | goto unlock; | |
1da177e4 LT |
2526 | } |
2527 | } | |
2528 | ||
eab2abf5 JB |
2529 | /* Simple mode for Interrupt Throttle Rate (ITR) */ |
2530 | if (hw->mac_type >= e1000_82540 && adapter->itr_setting == 4) { | |
2531 | /* | |
2532 | * Symmetric Tx/Rx gets a reduced ITR=2000; | |
2533 | * Total asymmetrical Tx or Rx gets ITR=8000; | |
2534 | * everyone else is between 2000-8000. | |
2535 | */ | |
2536 | u32 goc = (adapter->gotcl + adapter->gorcl) / 10000; | |
2537 | u32 dif = (adapter->gotcl > adapter->gorcl ? | |
2538 | adapter->gotcl - adapter->gorcl : | |
2539 | adapter->gorcl - adapter->gotcl) / 10000; | |
2540 | u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; | |
2541 | ||
2542 | ew32(ITR, 1000000000 / (itr * 256)); | |
2543 | } | |
2544 | ||
1da177e4 | 2545 | /* Cause software interrupt to ensure rx ring is cleaned */ |
1dc32918 | 2546 | ew32(ICS, E1000_ICS_RXDMT0); |
1da177e4 | 2547 | |
2648345f | 2548 | /* Force detection of hung controller every watchdog period */ |
c3033b01 | 2549 | adapter->detect_tx_hung = true; |
1da177e4 | 2550 | |
a4010afe | 2551 | /* Reschedule the task */ |
baa34745 | 2552 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
a4010afe | 2553 | schedule_delayed_work(&adapter->watchdog_task, 2 * HZ); |
0ef4eedc JB |
2554 | |
2555 | unlock: | |
2556 | mutex_unlock(&adapter->mutex); | |
1da177e4 LT |
2557 | } |
2558 | ||
835bb129 JB |
2559 | enum latency_range { |
2560 | lowest_latency = 0, | |
2561 | low_latency = 1, | |
2562 | bulk_latency = 2, | |
2563 | latency_invalid = 255 | |
2564 | }; | |
2565 | ||
2566 | /** | |
2567 | * e1000_update_itr - update the dynamic ITR value based on statistics | |
8fce4731 JB |
2568 | * @adapter: pointer to adapter |
2569 | * @itr_setting: current adapter->itr | |
2570 | * @packets: the number of packets during this measurement interval | |
2571 | * @bytes: the number of bytes during this measurement interval | |
2572 | * | |
835bb129 JB |
2573 | * Stores a new ITR value based on packets and byte |
2574 | * counts during the last interrupt. The advantage of per interrupt | |
2575 | * computation is faster updates and more accurate ITR for the current | |
2576 | * traffic pattern. Constants in this function were computed | |
2577 | * based on theoretical maximum wire speed and thresholds were set based | |
2578 | * on testing data as well as attempting to minimize response time | |
2579 | * while increasing bulk throughput. | |
2580 | * this functionality is controlled by the InterruptThrottleRate module | |
2581 | * parameter (see e1000_param.c) | |
835bb129 JB |
2582 | **/ |
2583 | static unsigned int e1000_update_itr(struct e1000_adapter *adapter, | |
64798845 | 2584 | u16 itr_setting, int packets, int bytes) |
835bb129 JB |
2585 | { |
2586 | unsigned int retval = itr_setting; | |
2587 | struct e1000_hw *hw = &adapter->hw; | |
2588 | ||
2589 | if (unlikely(hw->mac_type < e1000_82540)) | |
2590 | goto update_itr_done; | |
2591 | ||
2592 | if (packets == 0) | |
2593 | goto update_itr_done; | |
2594 | ||
835bb129 JB |
2595 | switch (itr_setting) { |
2596 | case lowest_latency: | |
2b65326e JB |
2597 | /* jumbo frames get bulk treatment*/ |
2598 | if (bytes/packets > 8000) | |
2599 | retval = bulk_latency; | |
2600 | else if ((packets < 5) && (bytes > 512)) | |
835bb129 JB |
2601 | retval = low_latency; |
2602 | break; | |
2603 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
2604 | if (bytes > 10000) { | |
2b65326e JB |
2605 | /* jumbo frames need bulk latency setting */ |
2606 | if (bytes/packets > 8000) | |
2607 | retval = bulk_latency; | |
2608 | else if ((packets < 10) || ((bytes/packets) > 1200)) | |
835bb129 JB |
2609 | retval = bulk_latency; |
2610 | else if ((packets > 35)) | |
2611 | retval = lowest_latency; | |
2b65326e JB |
2612 | } else if (bytes/packets > 2000) |
2613 | retval = bulk_latency; | |
2614 | else if (packets <= 2 && bytes < 512) | |
835bb129 JB |
2615 | retval = lowest_latency; |
2616 | break; | |
2617 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
2618 | if (bytes > 25000) { | |
2619 | if (packets > 35) | |
2620 | retval = low_latency; | |
2b65326e JB |
2621 | } else if (bytes < 6000) { |
2622 | retval = low_latency; | |
835bb129 JB |
2623 | } |
2624 | break; | |
2625 | } | |
2626 | ||
2627 | update_itr_done: | |
2628 | return retval; | |
2629 | } | |
2630 | ||
2631 | static void e1000_set_itr(struct e1000_adapter *adapter) | |
2632 | { | |
2633 | struct e1000_hw *hw = &adapter->hw; | |
406874a7 JP |
2634 | u16 current_itr; |
2635 | u32 new_itr = adapter->itr; | |
835bb129 JB |
2636 | |
2637 | if (unlikely(hw->mac_type < e1000_82540)) | |
2638 | return; | |
2639 | ||
2640 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ | |
2641 | if (unlikely(adapter->link_speed != SPEED_1000)) { | |
2642 | current_itr = 0; | |
2643 | new_itr = 4000; | |
2644 | goto set_itr_now; | |
2645 | } | |
2646 | ||
2647 | adapter->tx_itr = e1000_update_itr(adapter, | |
2648 | adapter->tx_itr, | |
2649 | adapter->total_tx_packets, | |
2650 | adapter->total_tx_bytes); | |
2b65326e JB |
2651 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
2652 | if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) | |
2653 | adapter->tx_itr = low_latency; | |
2654 | ||
835bb129 JB |
2655 | adapter->rx_itr = e1000_update_itr(adapter, |
2656 | adapter->rx_itr, | |
2657 | adapter->total_rx_packets, | |
2658 | adapter->total_rx_bytes); | |
2b65326e JB |
2659 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
2660 | if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) | |
2661 | adapter->rx_itr = low_latency; | |
835bb129 JB |
2662 | |
2663 | current_itr = max(adapter->rx_itr, adapter->tx_itr); | |
2664 | ||
835bb129 JB |
2665 | switch (current_itr) { |
2666 | /* counts and packets in update_itr are dependent on these numbers */ | |
2667 | case lowest_latency: | |
2668 | new_itr = 70000; | |
2669 | break; | |
2670 | case low_latency: | |
2671 | new_itr = 20000; /* aka hwitr = ~200 */ | |
2672 | break; | |
2673 | case bulk_latency: | |
2674 | new_itr = 4000; | |
2675 | break; | |
2676 | default: | |
2677 | break; | |
2678 | } | |
2679 | ||
2680 | set_itr_now: | |
2681 | if (new_itr != adapter->itr) { | |
2682 | /* this attempts to bias the interrupt rate towards Bulk | |
2683 | * by adding intermediate steps when interrupt rate is | |
2684 | * increasing */ | |
2685 | new_itr = new_itr > adapter->itr ? | |
2686 | min(adapter->itr + (new_itr >> 2), new_itr) : | |
2687 | new_itr; | |
2688 | adapter->itr = new_itr; | |
1dc32918 | 2689 | ew32(ITR, 1000000000 / (new_itr * 256)); |
835bb129 | 2690 | } |
835bb129 JB |
2691 | } |
2692 | ||
1da177e4 LT |
2693 | #define E1000_TX_FLAGS_CSUM 0x00000001 |
2694 | #define E1000_TX_FLAGS_VLAN 0x00000002 | |
2695 | #define E1000_TX_FLAGS_TSO 0x00000004 | |
2d7edb92 | 2696 | #define E1000_TX_FLAGS_IPV4 0x00000008 |
1da177e4 LT |
2697 | #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
2698 | #define E1000_TX_FLAGS_VLAN_SHIFT 16 | |
2699 | ||
64798845 JP |
2700 | static int e1000_tso(struct e1000_adapter *adapter, |
2701 | struct e1000_tx_ring *tx_ring, struct sk_buff *skb) | |
1da177e4 | 2702 | { |
1da177e4 | 2703 | struct e1000_context_desc *context_desc; |
545c67c0 | 2704 | struct e1000_buffer *buffer_info; |
1da177e4 | 2705 | unsigned int i; |
406874a7 JP |
2706 | u32 cmd_length = 0; |
2707 | u16 ipcse = 0, tucse, mss; | |
2708 | u8 ipcss, ipcso, tucss, tucso, hdr_len; | |
1da177e4 LT |
2709 | int err; |
2710 | ||
89114afd | 2711 | if (skb_is_gso(skb)) { |
1da177e4 LT |
2712 | if (skb_header_cloned(skb)) { |
2713 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
2714 | if (err) | |
2715 | return err; | |
2716 | } | |
2717 | ||
ab6a5bb6 | 2718 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
7967168c | 2719 | mss = skb_shinfo(skb)->gso_size; |
60828236 | 2720 | if (skb->protocol == htons(ETH_P_IP)) { |
eddc9ec5 ACM |
2721 | struct iphdr *iph = ip_hdr(skb); |
2722 | iph->tot_len = 0; | |
2723 | iph->check = 0; | |
aa8223c7 ACM |
2724 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
2725 | iph->daddr, 0, | |
2726 | IPPROTO_TCP, | |
2727 | 0); | |
2d7edb92 | 2728 | cmd_length = E1000_TXD_CMD_IP; |
ea2ae17d | 2729 | ipcse = skb_transport_offset(skb) - 1; |
e15fdd03 | 2730 | } else if (skb->protocol == htons(ETH_P_IPV6)) { |
0660e03f | 2731 | ipv6_hdr(skb)->payload_len = 0; |
aa8223c7 | 2732 | tcp_hdr(skb)->check = |
0660e03f ACM |
2733 | ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
2734 | &ipv6_hdr(skb)->daddr, | |
2735 | 0, IPPROTO_TCP, 0); | |
2d7edb92 | 2736 | ipcse = 0; |
2d7edb92 | 2737 | } |
bbe735e4 | 2738 | ipcss = skb_network_offset(skb); |
eddc9ec5 | 2739 | ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; |
ea2ae17d | 2740 | tucss = skb_transport_offset(skb); |
aa8223c7 | 2741 | tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
1da177e4 LT |
2742 | tucse = 0; |
2743 | ||
2744 | cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | | |
2d7edb92 | 2745 | E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
1da177e4 | 2746 | |
581d708e MC |
2747 | i = tx_ring->next_to_use; |
2748 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
545c67c0 | 2749 | buffer_info = &tx_ring->buffer_info[i]; |
1da177e4 LT |
2750 | |
2751 | context_desc->lower_setup.ip_fields.ipcss = ipcss; | |
2752 | context_desc->lower_setup.ip_fields.ipcso = ipcso; | |
2753 | context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); | |
2754 | context_desc->upper_setup.tcp_fields.tucss = tucss; | |
2755 | context_desc->upper_setup.tcp_fields.tucso = tucso; | |
2756 | context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); | |
2757 | context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); | |
2758 | context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; | |
2759 | context_desc->cmd_and_length = cpu_to_le32(cmd_length); | |
2760 | ||
545c67c0 | 2761 | buffer_info->time_stamp = jiffies; |
a9ebadd6 | 2762 | buffer_info->next_to_watch = i; |
545c67c0 | 2763 | |
581d708e MC |
2764 | if (++i == tx_ring->count) i = 0; |
2765 | tx_ring->next_to_use = i; | |
1da177e4 | 2766 | |
c3033b01 | 2767 | return true; |
1da177e4 | 2768 | } |
c3033b01 | 2769 | return false; |
1da177e4 LT |
2770 | } |
2771 | ||
64798845 JP |
2772 | static bool e1000_tx_csum(struct e1000_adapter *adapter, |
2773 | struct e1000_tx_ring *tx_ring, struct sk_buff *skb) | |
1da177e4 LT |
2774 | { |
2775 | struct e1000_context_desc *context_desc; | |
545c67c0 | 2776 | struct e1000_buffer *buffer_info; |
1da177e4 | 2777 | unsigned int i; |
406874a7 | 2778 | u8 css; |
3ed30676 | 2779 | u32 cmd_len = E1000_TXD_CMD_DEXT; |
1da177e4 | 2780 | |
3ed30676 DG |
2781 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
2782 | return false; | |
1da177e4 | 2783 | |
3ed30676 | 2784 | switch (skb->protocol) { |
09640e63 | 2785 | case cpu_to_be16(ETH_P_IP): |
3ed30676 DG |
2786 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
2787 | cmd_len |= E1000_TXD_CMD_TCP; | |
2788 | break; | |
09640e63 | 2789 | case cpu_to_be16(ETH_P_IPV6): |
3ed30676 DG |
2790 | /* XXX not handling all IPV6 headers */ |
2791 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
2792 | cmd_len |= E1000_TXD_CMD_TCP; | |
2793 | break; | |
2794 | default: | |
2795 | if (unlikely(net_ratelimit())) | |
feb8f478 ET |
2796 | e_warn(drv, "checksum_partial proto=%x!\n", |
2797 | skb->protocol); | |
3ed30676 DG |
2798 | break; |
2799 | } | |
1da177e4 | 2800 | |
0d0b1672 | 2801 | css = skb_checksum_start_offset(skb); |
1da177e4 | 2802 | |
3ed30676 DG |
2803 | i = tx_ring->next_to_use; |
2804 | buffer_info = &tx_ring->buffer_info[i]; | |
2805 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
545c67c0 | 2806 | |
3ed30676 DG |
2807 | context_desc->lower_setup.ip_config = 0; |
2808 | context_desc->upper_setup.tcp_fields.tucss = css; | |
2809 | context_desc->upper_setup.tcp_fields.tucso = | |
2810 | css + skb->csum_offset; | |
2811 | context_desc->upper_setup.tcp_fields.tucse = 0; | |
2812 | context_desc->tcp_seg_setup.data = 0; | |
2813 | context_desc->cmd_and_length = cpu_to_le32(cmd_len); | |
1da177e4 | 2814 | |
3ed30676 DG |
2815 | buffer_info->time_stamp = jiffies; |
2816 | buffer_info->next_to_watch = i; | |
1da177e4 | 2817 | |
3ed30676 DG |
2818 | if (unlikely(++i == tx_ring->count)) i = 0; |
2819 | tx_ring->next_to_use = i; | |
2820 | ||
2821 | return true; | |
1da177e4 LT |
2822 | } |
2823 | ||
2824 | #define E1000_MAX_TXD_PWR 12 | |
2825 | #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) | |
2826 | ||
64798845 JP |
2827 | static int e1000_tx_map(struct e1000_adapter *adapter, |
2828 | struct e1000_tx_ring *tx_ring, | |
2829 | struct sk_buff *skb, unsigned int first, | |
2830 | unsigned int max_per_txd, unsigned int nr_frags, | |
2831 | unsigned int mss) | |
1da177e4 | 2832 | { |
1dc32918 | 2833 | struct e1000_hw *hw = &adapter->hw; |
602c0554 | 2834 | struct pci_dev *pdev = adapter->pdev; |
37e73df8 | 2835 | struct e1000_buffer *buffer_info; |
d20b606c | 2836 | unsigned int len = skb_headlen(skb); |
602c0554 | 2837 | unsigned int offset = 0, size, count = 0, i; |
31c15a2f | 2838 | unsigned int f, bytecount, segs; |
1da177e4 LT |
2839 | |
2840 | i = tx_ring->next_to_use; | |
2841 | ||
96838a40 | 2842 | while (len) { |
37e73df8 | 2843 | buffer_info = &tx_ring->buffer_info[i]; |
1da177e4 | 2844 | size = min(len, max_per_txd); |
fd803241 JK |
2845 | /* Workaround for Controller erratum -- |
2846 | * descriptor for non-tso packet in a linear SKB that follows a | |
2847 | * tso gets written back prematurely before the data is fully | |
0f15a8fa | 2848 | * DMA'd to the controller */ |
fd803241 | 2849 | if (!skb->data_len && tx_ring->last_tx_tso && |
89114afd | 2850 | !skb_is_gso(skb)) { |
fd803241 JK |
2851 | tx_ring->last_tx_tso = 0; |
2852 | size -= 4; | |
2853 | } | |
2854 | ||
1da177e4 LT |
2855 | /* Workaround for premature desc write-backs |
2856 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 2857 | if (unlikely(mss && !nr_frags && size == len && size > 8)) |
1da177e4 | 2858 | size -= 4; |
97338bde MC |
2859 | /* work-around for errata 10 and it applies |
2860 | * to all controllers in PCI-X mode | |
2861 | * The fix is to make sure that the first descriptor of a | |
2862 | * packet is smaller than 2048 - 16 - 16 (or 2016) bytes | |
2863 | */ | |
1dc32918 | 2864 | if (unlikely((hw->bus_type == e1000_bus_type_pcix) && |
97338bde MC |
2865 | (size > 2015) && count == 0)) |
2866 | size = 2015; | |
96838a40 | 2867 | |
1da177e4 LT |
2868 | /* Workaround for potential 82544 hang in PCI-X. Avoid |
2869 | * terminating buffers within evenly-aligned dwords. */ | |
96838a40 | 2870 | if (unlikely(adapter->pcix_82544 && |
1da177e4 LT |
2871 | !((unsigned long)(skb->data + offset + size - 1) & 4) && |
2872 | size > 4)) | |
2873 | size -= 4; | |
2874 | ||
2875 | buffer_info->length = size; | |
cdd7549e | 2876 | /* set time_stamp *before* dma to help avoid a possible race */ |
1da177e4 | 2877 | buffer_info->time_stamp = jiffies; |
602c0554 | 2878 | buffer_info->mapped_as_page = false; |
b16f53be NN |
2879 | buffer_info->dma = dma_map_single(&pdev->dev, |
2880 | skb->data + offset, | |
2881 | size, DMA_TO_DEVICE); | |
2882 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) | |
602c0554 | 2883 | goto dma_error; |
a9ebadd6 | 2884 | buffer_info->next_to_watch = i; |
1da177e4 LT |
2885 | |
2886 | len -= size; | |
2887 | offset += size; | |
2888 | count++; | |
37e73df8 AD |
2889 | if (len) { |
2890 | i++; | |
2891 | if (unlikely(i == tx_ring->count)) | |
2892 | i = 0; | |
2893 | } | |
1da177e4 LT |
2894 | } |
2895 | ||
96838a40 | 2896 | for (f = 0; f < nr_frags; f++) { |
1da177e4 LT |
2897 | struct skb_frag_struct *frag; |
2898 | ||
2899 | frag = &skb_shinfo(skb)->frags[f]; | |
2900 | len = frag->size; | |
877749bf | 2901 | offset = 0; |
1da177e4 | 2902 | |
96838a40 | 2903 | while (len) { |
877749bf | 2904 | unsigned long bufend; |
37e73df8 AD |
2905 | i++; |
2906 | if (unlikely(i == tx_ring->count)) | |
2907 | i = 0; | |
2908 | ||
1da177e4 LT |
2909 | buffer_info = &tx_ring->buffer_info[i]; |
2910 | size = min(len, max_per_txd); | |
1da177e4 LT |
2911 | /* Workaround for premature desc write-backs |
2912 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 2913 | if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) |
1da177e4 | 2914 | size -= 4; |
1da177e4 LT |
2915 | /* Workaround for potential 82544 hang in PCI-X. |
2916 | * Avoid terminating buffers within evenly-aligned | |
2917 | * dwords. */ | |
877749bf IC |
2918 | bufend = (unsigned long) |
2919 | page_to_phys(skb_frag_page(frag)); | |
2920 | bufend += offset + size - 1; | |
96838a40 | 2921 | if (unlikely(adapter->pcix_82544 && |
877749bf IC |
2922 | !(bufend & 4) && |
2923 | size > 4)) | |
1da177e4 LT |
2924 | size -= 4; |
2925 | ||
2926 | buffer_info->length = size; | |
1da177e4 | 2927 | buffer_info->time_stamp = jiffies; |
602c0554 | 2928 | buffer_info->mapped_as_page = true; |
877749bf IC |
2929 | buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag, |
2930 | offset, size, DMA_TO_DEVICE); | |
b16f53be | 2931 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
602c0554 | 2932 | goto dma_error; |
a9ebadd6 | 2933 | buffer_info->next_to_watch = i; |
1da177e4 LT |
2934 | |
2935 | len -= size; | |
2936 | offset += size; | |
2937 | count++; | |
1da177e4 LT |
2938 | } |
2939 | } | |
2940 | ||
31c15a2f DN |
2941 | segs = skb_shinfo(skb)->gso_segs ?: 1; |
2942 | /* multiply data chunks by size of headers */ | |
2943 | bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len; | |
2944 | ||
1da177e4 | 2945 | tx_ring->buffer_info[i].skb = skb; |
31c15a2f DN |
2946 | tx_ring->buffer_info[i].segs = segs; |
2947 | tx_ring->buffer_info[i].bytecount = bytecount; | |
1da177e4 LT |
2948 | tx_ring->buffer_info[first].next_to_watch = i; |
2949 | ||
2950 | return count; | |
602c0554 AD |
2951 | |
2952 | dma_error: | |
2953 | dev_err(&pdev->dev, "TX DMA map failed\n"); | |
2954 | buffer_info->dma = 0; | |
c1fa347f | 2955 | if (count) |
602c0554 | 2956 | count--; |
c1fa347f RK |
2957 | |
2958 | while (count--) { | |
2959 | if (i==0) | |
602c0554 | 2960 | i += tx_ring->count; |
c1fa347f | 2961 | i--; |
602c0554 AD |
2962 | buffer_info = &tx_ring->buffer_info[i]; |
2963 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); | |
2964 | } | |
2965 | ||
2966 | return 0; | |
1da177e4 LT |
2967 | } |
2968 | ||
64798845 JP |
2969 | static void e1000_tx_queue(struct e1000_adapter *adapter, |
2970 | struct e1000_tx_ring *tx_ring, int tx_flags, | |
2971 | int count) | |
1da177e4 | 2972 | { |
1dc32918 | 2973 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
2974 | struct e1000_tx_desc *tx_desc = NULL; |
2975 | struct e1000_buffer *buffer_info; | |
406874a7 | 2976 | u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; |
1da177e4 LT |
2977 | unsigned int i; |
2978 | ||
96838a40 | 2979 | if (likely(tx_flags & E1000_TX_FLAGS_TSO)) { |
1da177e4 LT |
2980 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
2981 | E1000_TXD_CMD_TSE; | |
2d7edb92 MC |
2982 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
2983 | ||
96838a40 | 2984 | if (likely(tx_flags & E1000_TX_FLAGS_IPV4)) |
2d7edb92 | 2985 | txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
1da177e4 LT |
2986 | } |
2987 | ||
96838a40 | 2988 | if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) { |
1da177e4 LT |
2989 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
2990 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
2991 | } | |
2992 | ||
96838a40 | 2993 | if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { |
1da177e4 LT |
2994 | txd_lower |= E1000_TXD_CMD_VLE; |
2995 | txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); | |
2996 | } | |
2997 | ||
2998 | i = tx_ring->next_to_use; | |
2999 | ||
96838a40 | 3000 | while (count--) { |
1da177e4 LT |
3001 | buffer_info = &tx_ring->buffer_info[i]; |
3002 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
3003 | tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
3004 | tx_desc->lower.data = | |
3005 | cpu_to_le32(txd_lower | buffer_info->length); | |
3006 | tx_desc->upper.data = cpu_to_le32(txd_upper); | |
96838a40 | 3007 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
3008 | } |
3009 | ||
3010 | tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); | |
3011 | ||
3012 | /* Force memory writes to complete before letting h/w | |
3013 | * know there are new descriptors to fetch. (Only | |
3014 | * applicable for weak-ordered memory model archs, | |
3015 | * such as IA-64). */ | |
3016 | wmb(); | |
3017 | ||
3018 | tx_ring->next_to_use = i; | |
1dc32918 | 3019 | writel(i, hw->hw_addr + tx_ring->tdt); |
2ce9047f JB |
3020 | /* we need this if more than one processor can write to our tail |
3021 | * at a time, it syncronizes IO on IA64/Altix systems */ | |
3022 | mmiowb(); | |
1da177e4 LT |
3023 | } |
3024 | ||
3025 | /** | |
3026 | * 82547 workaround to avoid controller hang in half-duplex environment. | |
3027 | * The workaround is to avoid queuing a large packet that would span | |
3028 | * the internal Tx FIFO ring boundary by notifying the stack to resend | |
3029 | * the packet at a later time. This gives the Tx FIFO an opportunity to | |
3030 | * flush all packets. When that occurs, we reset the Tx FIFO pointers | |
3031 | * to the beginning of the Tx FIFO. | |
3032 | **/ | |
3033 | ||
3034 | #define E1000_FIFO_HDR 0x10 | |
3035 | #define E1000_82547_PAD_LEN 0x3E0 | |
3036 | ||
64798845 JP |
3037 | static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
3038 | struct sk_buff *skb) | |
1da177e4 | 3039 | { |
406874a7 JP |
3040 | u32 fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; |
3041 | u32 skb_fifo_len = skb->len + E1000_FIFO_HDR; | |
1da177e4 | 3042 | |
9099cfb9 | 3043 | skb_fifo_len = ALIGN(skb_fifo_len, E1000_FIFO_HDR); |
1da177e4 | 3044 | |
96838a40 | 3045 | if (adapter->link_duplex != HALF_DUPLEX) |
1da177e4 LT |
3046 | goto no_fifo_stall_required; |
3047 | ||
96838a40 | 3048 | if (atomic_read(&adapter->tx_fifo_stall)) |
1da177e4 LT |
3049 | return 1; |
3050 | ||
96838a40 | 3051 | if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { |
1da177e4 LT |
3052 | atomic_set(&adapter->tx_fifo_stall, 1); |
3053 | return 1; | |
3054 | } | |
3055 | ||
3056 | no_fifo_stall_required: | |
3057 | adapter->tx_fifo_head += skb_fifo_len; | |
96838a40 | 3058 | if (adapter->tx_fifo_head >= adapter->tx_fifo_size) |
1da177e4 LT |
3059 | adapter->tx_fifo_head -= adapter->tx_fifo_size; |
3060 | return 0; | |
3061 | } | |
3062 | ||
65c7973f JB |
3063 | static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) |
3064 | { | |
3065 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3066 | struct e1000_tx_ring *tx_ring = adapter->tx_ring; | |
3067 | ||
3068 | netif_stop_queue(netdev); | |
3069 | /* Herbert's original patch had: | |
3070 | * smp_mb__after_netif_stop_queue(); | |
3071 | * but since that doesn't exist yet, just open code it. */ | |
3072 | smp_mb(); | |
3073 | ||
3074 | /* We need to check again in a case another CPU has just | |
3075 | * made room available. */ | |
3076 | if (likely(E1000_DESC_UNUSED(tx_ring) < size)) | |
3077 | return -EBUSY; | |
3078 | ||
3079 | /* A reprieve! */ | |
3080 | netif_start_queue(netdev); | |
fcfb1224 | 3081 | ++adapter->restart_queue; |
65c7973f JB |
3082 | return 0; |
3083 | } | |
3084 | ||
3085 | static int e1000_maybe_stop_tx(struct net_device *netdev, | |
3086 | struct e1000_tx_ring *tx_ring, int size) | |
3087 | { | |
3088 | if (likely(E1000_DESC_UNUSED(tx_ring) >= size)) | |
3089 | return 0; | |
3090 | return __e1000_maybe_stop_tx(netdev, size); | |
3091 | } | |
3092 | ||
1da177e4 | 3093 | #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
3b29a56d SH |
3094 | static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
3095 | struct net_device *netdev) | |
1da177e4 | 3096 | { |
60490fe0 | 3097 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 3098 | struct e1000_hw *hw = &adapter->hw; |
581d708e | 3099 | struct e1000_tx_ring *tx_ring; |
1da177e4 LT |
3100 | unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; |
3101 | unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; | |
3102 | unsigned int tx_flags = 0; | |
e743d313 | 3103 | unsigned int len = skb_headlen(skb); |
6d1e3aa7 KK |
3104 | unsigned int nr_frags; |
3105 | unsigned int mss; | |
1da177e4 | 3106 | int count = 0; |
76c224bc | 3107 | int tso; |
1da177e4 | 3108 | unsigned int f; |
1da177e4 | 3109 | |
65c7973f JB |
3110 | /* This goes back to the question of how to logically map a tx queue |
3111 | * to a flow. Right now, performance is impacted slightly negatively | |
3112 | * if using multiple tx queues. If the stack breaks away from a | |
3113 | * single qdisc implementation, we can look at this again. */ | |
581d708e | 3114 | tx_ring = adapter->tx_ring; |
24025e4e | 3115 | |
581d708e | 3116 | if (unlikely(skb->len <= 0)) { |
1da177e4 LT |
3117 | dev_kfree_skb_any(skb); |
3118 | return NETDEV_TX_OK; | |
3119 | } | |
3120 | ||
7967168c | 3121 | mss = skb_shinfo(skb)->gso_size; |
76c224bc | 3122 | /* The controller does a simple calculation to |
1da177e4 LT |
3123 | * make sure there is enough room in the FIFO before |
3124 | * initiating the DMA for each buffer. The calc is: | |
3125 | * 4 = ceil(buffer len/mss). To make sure we don't | |
3126 | * overrun the FIFO, adjust the max buffer len if mss | |
3127 | * drops. */ | |
96838a40 | 3128 | if (mss) { |
406874a7 | 3129 | u8 hdr_len; |
1da177e4 LT |
3130 | max_per_txd = min(mss << 2, max_per_txd); |
3131 | max_txd_pwr = fls(max_per_txd) - 1; | |
9a3056da | 3132 | |
ab6a5bb6 | 3133 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
6d1e3aa7 | 3134 | if (skb->data_len && hdr_len == len) { |
1dc32918 | 3135 | switch (hw->mac_type) { |
9f687888 | 3136 | unsigned int pull_size; |
683a2aa3 HX |
3137 | case e1000_82544: |
3138 | /* Make sure we have room to chop off 4 bytes, | |
3139 | * and that the end alignment will work out to | |
3140 | * this hardware's requirements | |
3141 | * NOTE: this is a TSO only workaround | |
3142 | * if end byte alignment not correct move us | |
3143 | * into the next dword */ | |
27a884dc | 3144 | if ((unsigned long)(skb_tail_pointer(skb) - 1) & 4) |
683a2aa3 HX |
3145 | break; |
3146 | /* fall through */ | |
9f687888 JK |
3147 | pull_size = min((unsigned int)4, skb->data_len); |
3148 | if (!__pskb_pull_tail(skb, pull_size)) { | |
feb8f478 ET |
3149 | e_err(drv, "__pskb_pull_tail " |
3150 | "failed.\n"); | |
9f687888 | 3151 | dev_kfree_skb_any(skb); |
749dfc70 | 3152 | return NETDEV_TX_OK; |
9f687888 | 3153 | } |
e743d313 | 3154 | len = skb_headlen(skb); |
9f687888 JK |
3155 | break; |
3156 | default: | |
3157 | /* do nothing */ | |
3158 | break; | |
d74bbd3b | 3159 | } |
9a3056da | 3160 | } |
1da177e4 LT |
3161 | } |
3162 | ||
9a3056da | 3163 | /* reserve a descriptor for the offload context */ |
84fa7933 | 3164 | if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
1da177e4 | 3165 | count++; |
2648345f | 3166 | count++; |
fd803241 | 3167 | |
fd803241 | 3168 | /* Controller Erratum workaround */ |
89114afd | 3169 | if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb)) |
fd803241 | 3170 | count++; |
fd803241 | 3171 | |
1da177e4 LT |
3172 | count += TXD_USE_COUNT(len, max_txd_pwr); |
3173 | ||
96838a40 | 3174 | if (adapter->pcix_82544) |
1da177e4 LT |
3175 | count++; |
3176 | ||
96838a40 | 3177 | /* work-around for errata 10 and it applies to all controllers |
97338bde MC |
3178 | * in PCI-X mode, so add one more descriptor to the count |
3179 | */ | |
1dc32918 | 3180 | if (unlikely((hw->bus_type == e1000_bus_type_pcix) && |
97338bde MC |
3181 | (len > 2015))) |
3182 | count++; | |
3183 | ||
1da177e4 | 3184 | nr_frags = skb_shinfo(skb)->nr_frags; |
96838a40 | 3185 | for (f = 0; f < nr_frags; f++) |
1da177e4 LT |
3186 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, |
3187 | max_txd_pwr); | |
96838a40 | 3188 | if (adapter->pcix_82544) |
1da177e4 LT |
3189 | count += nr_frags; |
3190 | ||
1da177e4 LT |
3191 | /* need: count + 2 desc gap to keep tail from touching |
3192 | * head, otherwise try next time */ | |
8017943e | 3193 | if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2))) |
1da177e4 | 3194 | return NETDEV_TX_BUSY; |
1da177e4 | 3195 | |
a4010afe JB |
3196 | if (unlikely((hw->mac_type == e1000_82547) && |
3197 | (e1000_82547_fifo_workaround(adapter, skb)))) { | |
3198 | netif_stop_queue(netdev); | |
3199 | if (!test_bit(__E1000_DOWN, &adapter->flags)) | |
3200 | schedule_delayed_work(&adapter->fifo_stall_task, 1); | |
3201 | return NETDEV_TX_BUSY; | |
1da177e4 LT |
3202 | } |
3203 | ||
5622e404 | 3204 | if (vlan_tx_tag_present(skb)) { |
1da177e4 LT |
3205 | tx_flags |= E1000_TX_FLAGS_VLAN; |
3206 | tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); | |
3207 | } | |
3208 | ||
581d708e | 3209 | first = tx_ring->next_to_use; |
96838a40 | 3210 | |
581d708e | 3211 | tso = e1000_tso(adapter, tx_ring, skb); |
1da177e4 LT |
3212 | if (tso < 0) { |
3213 | dev_kfree_skb_any(skb); | |
3214 | return NETDEV_TX_OK; | |
3215 | } | |
3216 | ||
fd803241 | 3217 | if (likely(tso)) { |
8fce4731 JB |
3218 | if (likely(hw->mac_type != e1000_82544)) |
3219 | tx_ring->last_tx_tso = 1; | |
1da177e4 | 3220 | tx_flags |= E1000_TX_FLAGS_TSO; |
fd803241 | 3221 | } else if (likely(e1000_tx_csum(adapter, tx_ring, skb))) |
1da177e4 LT |
3222 | tx_flags |= E1000_TX_FLAGS_CSUM; |
3223 | ||
60828236 | 3224 | if (likely(skb->protocol == htons(ETH_P_IP))) |
2d7edb92 MC |
3225 | tx_flags |= E1000_TX_FLAGS_IPV4; |
3226 | ||
37e73df8 AD |
3227 | count = e1000_tx_map(adapter, tx_ring, skb, first, max_per_txd, |
3228 | nr_frags, mss); | |
1da177e4 | 3229 | |
37e73df8 AD |
3230 | if (count) { |
3231 | e1000_tx_queue(adapter, tx_ring, tx_flags, count); | |
37e73df8 AD |
3232 | /* Make sure there is space in the ring for the next send. */ |
3233 | e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2); | |
1da177e4 | 3234 | |
37e73df8 AD |
3235 | } else { |
3236 | dev_kfree_skb_any(skb); | |
3237 | tx_ring->buffer_info[first].time_stamp = 0; | |
3238 | tx_ring->next_to_use = first; | |
3239 | } | |
1da177e4 | 3240 | |
1da177e4 LT |
3241 | return NETDEV_TX_OK; |
3242 | } | |
3243 | ||
3244 | /** | |
3245 | * e1000_tx_timeout - Respond to a Tx Hang | |
3246 | * @netdev: network interface device structure | |
3247 | **/ | |
3248 | ||
64798845 | 3249 | static void e1000_tx_timeout(struct net_device *netdev) |
1da177e4 | 3250 | { |
60490fe0 | 3251 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
3252 | |
3253 | /* Do the reset outside of interrupt context */ | |
87041639 JK |
3254 | adapter->tx_timeout_count++; |
3255 | schedule_work(&adapter->reset_task); | |
1da177e4 LT |
3256 | } |
3257 | ||
64798845 | 3258 | static void e1000_reset_task(struct work_struct *work) |
1da177e4 | 3259 | { |
65f27f38 DH |
3260 | struct e1000_adapter *adapter = |
3261 | container_of(work, struct e1000_adapter, reset_task); | |
1da177e4 | 3262 | |
0ef4eedc JB |
3263 | if (test_bit(__E1000_DOWN, &adapter->flags)) |
3264 | return; | |
338c15e4 | 3265 | e1000_reinit_safe(adapter); |
1da177e4 LT |
3266 | } |
3267 | ||
3268 | /** | |
3269 | * e1000_get_stats - Get System Network Statistics | |
3270 | * @netdev: network interface device structure | |
3271 | * | |
3272 | * Returns the address of the device statistics structure. | |
a4010afe | 3273 | * The statistics are actually updated from the watchdog. |
1da177e4 LT |
3274 | **/ |
3275 | ||
64798845 | 3276 | static struct net_device_stats *e1000_get_stats(struct net_device *netdev) |
1da177e4 | 3277 | { |
6b7660cd | 3278 | /* only return the current stats */ |
5fe31def | 3279 | return &netdev->stats; |
1da177e4 LT |
3280 | } |
3281 | ||
3282 | /** | |
3283 | * e1000_change_mtu - Change the Maximum Transfer Unit | |
3284 | * @netdev: network interface device structure | |
3285 | * @new_mtu: new value for maximum frame size | |
3286 | * | |
3287 | * Returns 0 on success, negative on failure | |
3288 | **/ | |
3289 | ||
64798845 | 3290 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu) |
1da177e4 | 3291 | { |
60490fe0 | 3292 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 3293 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
3294 | int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
3295 | ||
96838a40 JB |
3296 | if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || |
3297 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
feb8f478 | 3298 | e_err(probe, "Invalid MTU setting\n"); |
1da177e4 | 3299 | return -EINVAL; |
2d7edb92 | 3300 | } |
1da177e4 | 3301 | |
997f5cbd | 3302 | /* Adapter-specific max frame size limits. */ |
1dc32918 | 3303 | switch (hw->mac_type) { |
9e2feace | 3304 | case e1000_undefined ... e1000_82542_rev2_1: |
b7cb8c2c | 3305 | if (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)) { |
feb8f478 | 3306 | e_err(probe, "Jumbo Frames not supported.\n"); |
2d7edb92 | 3307 | return -EINVAL; |
2d7edb92 | 3308 | } |
997f5cbd | 3309 | break; |
997f5cbd JK |
3310 | default: |
3311 | /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */ | |
3312 | break; | |
1da177e4 LT |
3313 | } |
3314 | ||
3d6114e7 JB |
3315 | while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) |
3316 | msleep(1); | |
3317 | /* e1000_down has a dependency on max_frame_size */ | |
3318 | hw->max_frame_size = max_frame; | |
3319 | if (netif_running(netdev)) | |
3320 | e1000_down(adapter); | |
3321 | ||
87f5032e | 3322 | /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
9e2feace | 3323 | * means we reserve 2 more, this pushes us to allocate from the next |
edbbb3ca JB |
3324 | * larger slab size. |
3325 | * i.e. RXBUFFER_2048 --> size-4096 slab | |
3326 | * however with the new *_jumbo_rx* routines, jumbo receives will use | |
3327 | * fragmented skbs */ | |
9e2feace | 3328 | |
9926146b | 3329 | if (max_frame <= E1000_RXBUFFER_2048) |
9e2feace | 3330 | adapter->rx_buffer_len = E1000_RXBUFFER_2048; |
edbbb3ca JB |
3331 | else |
3332 | #if (PAGE_SIZE >= E1000_RXBUFFER_16384) | |
9e2feace | 3333 | adapter->rx_buffer_len = E1000_RXBUFFER_16384; |
edbbb3ca JB |
3334 | #elif (PAGE_SIZE >= E1000_RXBUFFER_4096) |
3335 | adapter->rx_buffer_len = PAGE_SIZE; | |
3336 | #endif | |
9e2feace AK |
3337 | |
3338 | /* adjust allocation if LPE protects us, and we aren't using SBP */ | |
1dc32918 | 3339 | if (!hw->tbi_compatibility_on && |
b7cb8c2c | 3340 | ((max_frame == (ETH_FRAME_LEN + ETH_FCS_LEN)) || |
9e2feace AK |
3341 | (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE))) |
3342 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; | |
997f5cbd | 3343 | |
675ad473 ET |
3344 | pr_info("%s changing MTU from %d to %d\n", |
3345 | netdev->name, netdev->mtu, new_mtu); | |
2d7edb92 MC |
3346 | netdev->mtu = new_mtu; |
3347 | ||
2db10a08 | 3348 | if (netif_running(netdev)) |
3d6114e7 JB |
3349 | e1000_up(adapter); |
3350 | else | |
3351 | e1000_reset(adapter); | |
3352 | ||
3353 | clear_bit(__E1000_RESETTING, &adapter->flags); | |
1da177e4 | 3354 | |
1da177e4 LT |
3355 | return 0; |
3356 | } | |
3357 | ||
3358 | /** | |
3359 | * e1000_update_stats - Update the board statistics counters | |
3360 | * @adapter: board private structure | |
3361 | **/ | |
3362 | ||
64798845 | 3363 | void e1000_update_stats(struct e1000_adapter *adapter) |
1da177e4 | 3364 | { |
5fe31def | 3365 | struct net_device *netdev = adapter->netdev; |
1da177e4 | 3366 | struct e1000_hw *hw = &adapter->hw; |
282f33c9 | 3367 | struct pci_dev *pdev = adapter->pdev; |
1da177e4 | 3368 | unsigned long flags; |
406874a7 | 3369 | u16 phy_tmp; |
1da177e4 LT |
3370 | |
3371 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF | |
3372 | ||
282f33c9 LV |
3373 | /* |
3374 | * Prevent stats update while adapter is being reset, or if the pci | |
3375 | * connection is down. | |
3376 | */ | |
9026729b | 3377 | if (adapter->link_speed == 0) |
282f33c9 | 3378 | return; |
81b1955e | 3379 | if (pci_channel_offline(pdev)) |
9026729b AK |
3380 | return; |
3381 | ||
1da177e4 LT |
3382 | spin_lock_irqsave(&adapter->stats_lock, flags); |
3383 | ||
828d055f | 3384 | /* these counters are modified from e1000_tbi_adjust_stats, |
1da177e4 LT |
3385 | * called from the interrupt context, so they must only |
3386 | * be written while holding adapter->stats_lock | |
3387 | */ | |
3388 | ||
1dc32918 JP |
3389 | adapter->stats.crcerrs += er32(CRCERRS); |
3390 | adapter->stats.gprc += er32(GPRC); | |
3391 | adapter->stats.gorcl += er32(GORCL); | |
3392 | adapter->stats.gorch += er32(GORCH); | |
3393 | adapter->stats.bprc += er32(BPRC); | |
3394 | adapter->stats.mprc += er32(MPRC); | |
3395 | adapter->stats.roc += er32(ROC); | |
3396 | ||
1532ecea JB |
3397 | adapter->stats.prc64 += er32(PRC64); |
3398 | adapter->stats.prc127 += er32(PRC127); | |
3399 | adapter->stats.prc255 += er32(PRC255); | |
3400 | adapter->stats.prc511 += er32(PRC511); | |
3401 | adapter->stats.prc1023 += er32(PRC1023); | |
3402 | adapter->stats.prc1522 += er32(PRC1522); | |
1dc32918 JP |
3403 | |
3404 | adapter->stats.symerrs += er32(SYMERRS); | |
3405 | adapter->stats.mpc += er32(MPC); | |
3406 | adapter->stats.scc += er32(SCC); | |
3407 | adapter->stats.ecol += er32(ECOL); | |
3408 | adapter->stats.mcc += er32(MCC); | |
3409 | adapter->stats.latecol += er32(LATECOL); | |
3410 | adapter->stats.dc += er32(DC); | |
3411 | adapter->stats.sec += er32(SEC); | |
3412 | adapter->stats.rlec += er32(RLEC); | |
3413 | adapter->stats.xonrxc += er32(XONRXC); | |
3414 | adapter->stats.xontxc += er32(XONTXC); | |
3415 | adapter->stats.xoffrxc += er32(XOFFRXC); | |
3416 | adapter->stats.xofftxc += er32(XOFFTXC); | |
3417 | adapter->stats.fcruc += er32(FCRUC); | |
3418 | adapter->stats.gptc += er32(GPTC); | |
3419 | adapter->stats.gotcl += er32(GOTCL); | |
3420 | adapter->stats.gotch += er32(GOTCH); | |
3421 | adapter->stats.rnbc += er32(RNBC); | |
3422 | adapter->stats.ruc += er32(RUC); | |
3423 | adapter->stats.rfc += er32(RFC); | |
3424 | adapter->stats.rjc += er32(RJC); | |
3425 | adapter->stats.torl += er32(TORL); | |
3426 | adapter->stats.torh += er32(TORH); | |
3427 | adapter->stats.totl += er32(TOTL); | |
3428 | adapter->stats.toth += er32(TOTH); | |
3429 | adapter->stats.tpr += er32(TPR); | |
3430 | ||
1532ecea JB |
3431 | adapter->stats.ptc64 += er32(PTC64); |
3432 | adapter->stats.ptc127 += er32(PTC127); | |
3433 | adapter->stats.ptc255 += er32(PTC255); | |
3434 | adapter->stats.ptc511 += er32(PTC511); | |
3435 | adapter->stats.ptc1023 += er32(PTC1023); | |
3436 | adapter->stats.ptc1522 += er32(PTC1522); | |
1dc32918 JP |
3437 | |
3438 | adapter->stats.mptc += er32(MPTC); | |
3439 | adapter->stats.bptc += er32(BPTC); | |
1da177e4 LT |
3440 | |
3441 | /* used for adaptive IFS */ | |
3442 | ||
1dc32918 | 3443 | hw->tx_packet_delta = er32(TPT); |
1da177e4 | 3444 | adapter->stats.tpt += hw->tx_packet_delta; |
1dc32918 | 3445 | hw->collision_delta = er32(COLC); |
1da177e4 LT |
3446 | adapter->stats.colc += hw->collision_delta; |
3447 | ||
96838a40 | 3448 | if (hw->mac_type >= e1000_82543) { |
1dc32918 JP |
3449 | adapter->stats.algnerrc += er32(ALGNERRC); |
3450 | adapter->stats.rxerrc += er32(RXERRC); | |
3451 | adapter->stats.tncrs += er32(TNCRS); | |
3452 | adapter->stats.cexterr += er32(CEXTERR); | |
3453 | adapter->stats.tsctc += er32(TSCTC); | |
3454 | adapter->stats.tsctfc += er32(TSCTFC); | |
1da177e4 LT |
3455 | } |
3456 | ||
3457 | /* Fill out the OS statistics structure */ | |
5fe31def AK |
3458 | netdev->stats.multicast = adapter->stats.mprc; |
3459 | netdev->stats.collisions = adapter->stats.colc; | |
1da177e4 LT |
3460 | |
3461 | /* Rx Errors */ | |
3462 | ||
87041639 JK |
3463 | /* RLEC on some newer hardware can be incorrect so build |
3464 | * our own version based on RUC and ROC */ | |
5fe31def | 3465 | netdev->stats.rx_errors = adapter->stats.rxerrc + |
1da177e4 | 3466 | adapter->stats.crcerrs + adapter->stats.algnerrc + |
87041639 JK |
3467 | adapter->stats.ruc + adapter->stats.roc + |
3468 | adapter->stats.cexterr; | |
49559854 | 3469 | adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc; |
5fe31def AK |
3470 | netdev->stats.rx_length_errors = adapter->stats.rlerrc; |
3471 | netdev->stats.rx_crc_errors = adapter->stats.crcerrs; | |
3472 | netdev->stats.rx_frame_errors = adapter->stats.algnerrc; | |
3473 | netdev->stats.rx_missed_errors = adapter->stats.mpc; | |
1da177e4 LT |
3474 | |
3475 | /* Tx Errors */ | |
49559854 | 3476 | adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol; |
5fe31def AK |
3477 | netdev->stats.tx_errors = adapter->stats.txerrc; |
3478 | netdev->stats.tx_aborted_errors = adapter->stats.ecol; | |
3479 | netdev->stats.tx_window_errors = adapter->stats.latecol; | |
3480 | netdev->stats.tx_carrier_errors = adapter->stats.tncrs; | |
1dc32918 | 3481 | if (hw->bad_tx_carr_stats_fd && |
167fb284 | 3482 | adapter->link_duplex == FULL_DUPLEX) { |
5fe31def | 3483 | netdev->stats.tx_carrier_errors = 0; |
167fb284 JG |
3484 | adapter->stats.tncrs = 0; |
3485 | } | |
1da177e4 LT |
3486 | |
3487 | /* Tx Dropped needs to be maintained elsewhere */ | |
3488 | ||
3489 | /* Phy Stats */ | |
96838a40 JB |
3490 | if (hw->media_type == e1000_media_type_copper) { |
3491 | if ((adapter->link_speed == SPEED_1000) && | |
1da177e4 LT |
3492 | (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
3493 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; | |
3494 | adapter->phy_stats.idle_errors += phy_tmp; | |
3495 | } | |
3496 | ||
96838a40 | 3497 | if ((hw->mac_type <= e1000_82546) && |
1da177e4 LT |
3498 | (hw->phy_type == e1000_phy_m88) && |
3499 | !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) | |
3500 | adapter->phy_stats.receive_errors += phy_tmp; | |
3501 | } | |
3502 | ||
15e376b4 | 3503 | /* Management Stats */ |
1dc32918 JP |
3504 | if (hw->has_smbus) { |
3505 | adapter->stats.mgptc += er32(MGTPTC); | |
3506 | adapter->stats.mgprc += er32(MGTPRC); | |
3507 | adapter->stats.mgpdc += er32(MGTPDC); | |
15e376b4 JG |
3508 | } |
3509 | ||
1da177e4 LT |
3510 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
3511 | } | |
9ac98284 | 3512 | |
1da177e4 LT |
3513 | /** |
3514 | * e1000_intr - Interrupt Handler | |
3515 | * @irq: interrupt number | |
3516 | * @data: pointer to a network interface device structure | |
1da177e4 LT |
3517 | **/ |
3518 | ||
64798845 | 3519 | static irqreturn_t e1000_intr(int irq, void *data) |
1da177e4 LT |
3520 | { |
3521 | struct net_device *netdev = data; | |
60490fe0 | 3522 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3523 | struct e1000_hw *hw = &adapter->hw; |
1532ecea | 3524 | u32 icr = er32(ICR); |
c3570acb | 3525 | |
4c11b8ad | 3526 | if (unlikely((!icr))) |
835bb129 JB |
3527 | return IRQ_NONE; /* Not our interrupt */ |
3528 | ||
4c11b8ad JB |
3529 | /* |
3530 | * we might have caused the interrupt, but the above | |
3531 | * read cleared it, and just in case the driver is | |
3532 | * down there is nothing to do so return handled | |
3533 | */ | |
3534 | if (unlikely(test_bit(__E1000_DOWN, &adapter->flags))) | |
3535 | return IRQ_HANDLED; | |
3536 | ||
96838a40 | 3537 | if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { |
1da177e4 | 3538 | hw->get_link_status = 1; |
1314bbf3 AK |
3539 | /* guard against interrupt when we're going down */ |
3540 | if (!test_bit(__E1000_DOWN, &adapter->flags)) | |
a4010afe | 3541 | schedule_delayed_work(&adapter->watchdog_task, 1); |
1da177e4 LT |
3542 | } |
3543 | ||
1532ecea JB |
3544 | /* disable interrupts, without the synchronize_irq bit */ |
3545 | ew32(IMC, ~0); | |
3546 | E1000_WRITE_FLUSH(); | |
3547 | ||
288379f0 | 3548 | if (likely(napi_schedule_prep(&adapter->napi))) { |
835bb129 JB |
3549 | adapter->total_tx_bytes = 0; |
3550 | adapter->total_tx_packets = 0; | |
3551 | adapter->total_rx_bytes = 0; | |
3552 | adapter->total_rx_packets = 0; | |
288379f0 | 3553 | __napi_schedule(&adapter->napi); |
a6c42322 | 3554 | } else { |
90fb5135 AK |
3555 | /* this really should not happen! if it does it is basically a |
3556 | * bug, but not a hard error, so enable ints and continue */ | |
a6c42322 JB |
3557 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
3558 | e1000_irq_enable(adapter); | |
3559 | } | |
1da177e4 | 3560 | |
1da177e4 LT |
3561 | return IRQ_HANDLED; |
3562 | } | |
3563 | ||
1da177e4 LT |
3564 | /** |
3565 | * e1000_clean - NAPI Rx polling callback | |
3566 | * @adapter: board private structure | |
3567 | **/ | |
64798845 | 3568 | static int e1000_clean(struct napi_struct *napi, int budget) |
1da177e4 | 3569 | { |
bea3348e | 3570 | struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); |
650b5a5c | 3571 | int tx_clean_complete = 0, work_done = 0; |
581d708e | 3572 | |
650b5a5c | 3573 | tx_clean_complete = e1000_clean_tx_irq(adapter, &adapter->tx_ring[0]); |
581d708e | 3574 | |
650b5a5c | 3575 | adapter->clean_rx(adapter, &adapter->rx_ring[0], &work_done, budget); |
581d708e | 3576 | |
650b5a5c | 3577 | if (!tx_clean_complete) |
d2c7ddd6 DM |
3578 | work_done = budget; |
3579 | ||
53e52c72 DM |
3580 | /* If budget not fully consumed, exit the polling mode */ |
3581 | if (work_done < budget) { | |
835bb129 JB |
3582 | if (likely(adapter->itr_setting & 3)) |
3583 | e1000_set_itr(adapter); | |
288379f0 | 3584 | napi_complete(napi); |
a6c42322 JB |
3585 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
3586 | e1000_irq_enable(adapter); | |
1da177e4 LT |
3587 | } |
3588 | ||
bea3348e | 3589 | return work_done; |
1da177e4 LT |
3590 | } |
3591 | ||
1da177e4 LT |
3592 | /** |
3593 | * e1000_clean_tx_irq - Reclaim resources after transmit completes | |
3594 | * @adapter: board private structure | |
3595 | **/ | |
64798845 JP |
3596 | static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
3597 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 3598 | { |
1dc32918 | 3599 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
3600 | struct net_device *netdev = adapter->netdev; |
3601 | struct e1000_tx_desc *tx_desc, *eop_desc; | |
3602 | struct e1000_buffer *buffer_info; | |
3603 | unsigned int i, eop; | |
2a1af5d7 | 3604 | unsigned int count = 0; |
835bb129 | 3605 | unsigned int total_tx_bytes=0, total_tx_packets=0; |
1da177e4 LT |
3606 | |
3607 | i = tx_ring->next_to_clean; | |
3608 | eop = tx_ring->buffer_info[i].next_to_watch; | |
3609 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
3610 | ||
ccfb342c AD |
3611 | while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && |
3612 | (count < tx_ring->count)) { | |
843f4267 | 3613 | bool cleaned = false; |
2d0bb1c1 | 3614 | rmb(); /* read buffer_info after eop_desc */ |
843f4267 | 3615 | for ( ; !cleaned; count++) { |
1da177e4 LT |
3616 | tx_desc = E1000_TX_DESC(*tx_ring, i); |
3617 | buffer_info = &tx_ring->buffer_info[i]; | |
3618 | cleaned = (i == eop); | |
3619 | ||
835bb129 | 3620 | if (cleaned) { |
31c15a2f DN |
3621 | total_tx_packets += buffer_info->segs; |
3622 | total_tx_bytes += buffer_info->bytecount; | |
835bb129 | 3623 | } |
fd803241 | 3624 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
a9ebadd6 | 3625 | tx_desc->upper.data = 0; |
1da177e4 | 3626 | |
96838a40 | 3627 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 | 3628 | } |
581d708e | 3629 | |
1da177e4 LT |
3630 | eop = tx_ring->buffer_info[i].next_to_watch; |
3631 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
3632 | } | |
3633 | ||
3634 | tx_ring->next_to_clean = i; | |
3635 | ||
77b2aad5 | 3636 | #define TX_WAKE_THRESHOLD 32 |
843f4267 | 3637 | if (unlikely(count && netif_carrier_ok(netdev) && |
65c7973f JB |
3638 | E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) { |
3639 | /* Make sure that anybody stopping the queue after this | |
3640 | * sees the new next_to_clean. | |
3641 | */ | |
3642 | smp_mb(); | |
cdd7549e JB |
3643 | |
3644 | if (netif_queue_stopped(netdev) && | |
3645 | !(test_bit(__E1000_DOWN, &adapter->flags))) { | |
77b2aad5 | 3646 | netif_wake_queue(netdev); |
fcfb1224 JB |
3647 | ++adapter->restart_queue; |
3648 | } | |
77b2aad5 | 3649 | } |
2648345f | 3650 | |
581d708e | 3651 | if (adapter->detect_tx_hung) { |
2648345f | 3652 | /* Detect a transmit hang in hardware, this serializes the |
1da177e4 | 3653 | * check with the clearing of time_stamp and movement of i */ |
c3033b01 | 3654 | adapter->detect_tx_hung = false; |
cdd7549e JB |
3655 | if (tx_ring->buffer_info[eop].time_stamp && |
3656 | time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + | |
8e95a202 JP |
3657 | (adapter->tx_timeout_factor * HZ)) && |
3658 | !(er32(STATUS) & E1000_STATUS_TXOFF)) { | |
70b8f1e1 MC |
3659 | |
3660 | /* detected Tx unit hang */ | |
feb8f478 | 3661 | e_err(drv, "Detected Tx Unit Hang\n" |
675ad473 ET |
3662 | " Tx Queue <%lu>\n" |
3663 | " TDH <%x>\n" | |
3664 | " TDT <%x>\n" | |
3665 | " next_to_use <%x>\n" | |
3666 | " next_to_clean <%x>\n" | |
3667 | "buffer_info[next_to_clean]\n" | |
3668 | " time_stamp <%lx>\n" | |
3669 | " next_to_watch <%x>\n" | |
3670 | " jiffies <%lx>\n" | |
3671 | " next_to_watch.status <%x>\n", | |
7bfa4816 JK |
3672 | (unsigned long)((tx_ring - adapter->tx_ring) / |
3673 | sizeof(struct e1000_tx_ring)), | |
1dc32918 JP |
3674 | readl(hw->hw_addr + tx_ring->tdh), |
3675 | readl(hw->hw_addr + tx_ring->tdt), | |
70b8f1e1 | 3676 | tx_ring->next_to_use, |
392137fa | 3677 | tx_ring->next_to_clean, |
cdd7549e | 3678 | tx_ring->buffer_info[eop].time_stamp, |
70b8f1e1 MC |
3679 | eop, |
3680 | jiffies, | |
3681 | eop_desc->upper.fields.status); | |
1da177e4 | 3682 | netif_stop_queue(netdev); |
70b8f1e1 | 3683 | } |
1da177e4 | 3684 | } |
835bb129 JB |
3685 | adapter->total_tx_bytes += total_tx_bytes; |
3686 | adapter->total_tx_packets += total_tx_packets; | |
5fe31def AK |
3687 | netdev->stats.tx_bytes += total_tx_bytes; |
3688 | netdev->stats.tx_packets += total_tx_packets; | |
807540ba | 3689 | return count < tx_ring->count; |
1da177e4 LT |
3690 | } |
3691 | ||
3692 | /** | |
3693 | * e1000_rx_checksum - Receive Checksum Offload for 82543 | |
2d7edb92 MC |
3694 | * @adapter: board private structure |
3695 | * @status_err: receive descriptor status and error fields | |
3696 | * @csum: receive descriptor csum field | |
3697 | * @sk_buff: socket buffer with received data | |
1da177e4 LT |
3698 | **/ |
3699 | ||
64798845 JP |
3700 | static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, |
3701 | u32 csum, struct sk_buff *skb) | |
1da177e4 | 3702 | { |
1dc32918 | 3703 | struct e1000_hw *hw = &adapter->hw; |
406874a7 JP |
3704 | u16 status = (u16)status_err; |
3705 | u8 errors = (u8)(status_err >> 24); | |
bc8acf2c ED |
3706 | |
3707 | skb_checksum_none_assert(skb); | |
2d7edb92 | 3708 | |
1da177e4 | 3709 | /* 82543 or newer only */ |
1dc32918 | 3710 | if (unlikely(hw->mac_type < e1000_82543)) return; |
1da177e4 | 3711 | /* Ignore Checksum bit is set */ |
96838a40 | 3712 | if (unlikely(status & E1000_RXD_STAT_IXSM)) return; |
2d7edb92 | 3713 | /* TCP/UDP checksum error bit is set */ |
96838a40 | 3714 | if (unlikely(errors & E1000_RXD_ERR_TCPE)) { |
1da177e4 | 3715 | /* let the stack verify checksum errors */ |
1da177e4 | 3716 | adapter->hw_csum_err++; |
2d7edb92 MC |
3717 | return; |
3718 | } | |
3719 | /* TCP/UDP Checksum has not been calculated */ | |
1532ecea JB |
3720 | if (!(status & E1000_RXD_STAT_TCPCS)) |
3721 | return; | |
3722 | ||
2d7edb92 MC |
3723 | /* It must be a TCP or UDP packet with a valid checksum */ |
3724 | if (likely(status & E1000_RXD_STAT_TCPCS)) { | |
1da177e4 LT |
3725 | /* TCP checksum is good */ |
3726 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1da177e4 | 3727 | } |
2d7edb92 | 3728 | adapter->hw_csum_good++; |
1da177e4 LT |
3729 | } |
3730 | ||
edbbb3ca JB |
3731 | /** |
3732 | * e1000_consume_page - helper function | |
3733 | **/ | |
3734 | static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, | |
3735 | u16 length) | |
3736 | { | |
3737 | bi->page = NULL; | |
3738 | skb->len += length; | |
3739 | skb->data_len += length; | |
3740 | skb->truesize += length; | |
3741 | } | |
3742 | ||
3743 | /** | |
3744 | * e1000_receive_skb - helper function to handle rx indications | |
3745 | * @adapter: board private structure | |
3746 | * @status: descriptor status field as written by hardware | |
3747 | * @vlan: descriptor vlan field as written by hardware (no le/be conversion) | |
3748 | * @skb: pointer to sk_buff to be indicated to stack | |
3749 | */ | |
3750 | static void e1000_receive_skb(struct e1000_adapter *adapter, u8 status, | |
3751 | __le16 vlan, struct sk_buff *skb) | |
3752 | { | |
6a08d194 JB |
3753 | skb->protocol = eth_type_trans(skb, adapter->netdev); |
3754 | ||
5622e404 JP |
3755 | if (status & E1000_RXD_STAT_VP) { |
3756 | u16 vid = le16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK; | |
3757 | ||
3758 | __vlan_hwaccel_put_tag(skb, vid); | |
3759 | } | |
3760 | napi_gro_receive(&adapter->napi, skb); | |
edbbb3ca JB |
3761 | } |
3762 | ||
3763 | /** | |
3764 | * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy | |
3765 | * @adapter: board private structure | |
3766 | * @rx_ring: ring to clean | |
3767 | * @work_done: amount of napi work completed this call | |
3768 | * @work_to_do: max amount of work allowed for this call to do | |
3769 | * | |
3770 | * the return value indicates whether actual cleaning was done, there | |
3771 | * is no guarantee that everything was cleaned | |
3772 | */ | |
3773 | static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, | |
3774 | struct e1000_rx_ring *rx_ring, | |
3775 | int *work_done, int work_to_do) | |
3776 | { | |
3777 | struct e1000_hw *hw = &adapter->hw; | |
3778 | struct net_device *netdev = adapter->netdev; | |
3779 | struct pci_dev *pdev = adapter->pdev; | |
3780 | struct e1000_rx_desc *rx_desc, *next_rxd; | |
3781 | struct e1000_buffer *buffer_info, *next_buffer; | |
3782 | unsigned long irq_flags; | |
3783 | u32 length; | |
3784 | unsigned int i; | |
3785 | int cleaned_count = 0; | |
3786 | bool cleaned = false; | |
3787 | unsigned int total_rx_bytes=0, total_rx_packets=0; | |
3788 | ||
3789 | i = rx_ring->next_to_clean; | |
3790 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
3791 | buffer_info = &rx_ring->buffer_info[i]; | |
3792 | ||
3793 | while (rx_desc->status & E1000_RXD_STAT_DD) { | |
3794 | struct sk_buff *skb; | |
3795 | u8 status; | |
3796 | ||
3797 | if (*work_done >= work_to_do) | |
3798 | break; | |
3799 | (*work_done)++; | |
2d0bb1c1 | 3800 | rmb(); /* read descriptor and rx_buffer_info after status DD */ |
edbbb3ca JB |
3801 | |
3802 | status = rx_desc->status; | |
3803 | skb = buffer_info->skb; | |
3804 | buffer_info->skb = NULL; | |
3805 | ||
3806 | if (++i == rx_ring->count) i = 0; | |
3807 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
3808 | prefetch(next_rxd); | |
3809 | ||
3810 | next_buffer = &rx_ring->buffer_info[i]; | |
3811 | ||
3812 | cleaned = true; | |
3813 | cleaned_count++; | |
b16f53be NN |
3814 | dma_unmap_page(&pdev->dev, buffer_info->dma, |
3815 | buffer_info->length, DMA_FROM_DEVICE); | |
edbbb3ca JB |
3816 | buffer_info->dma = 0; |
3817 | ||
3818 | length = le16_to_cpu(rx_desc->length); | |
3819 | ||
3820 | /* errors is only valid for DD + EOP descriptors */ | |
3821 | if (unlikely((status & E1000_RXD_STAT_EOP) && | |
3822 | (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) { | |
3823 | u8 last_byte = *(skb->data + length - 1); | |
3824 | if (TBI_ACCEPT(hw, status, rx_desc->errors, length, | |
3825 | last_byte)) { | |
3826 | spin_lock_irqsave(&adapter->stats_lock, | |
3827 | irq_flags); | |
3828 | e1000_tbi_adjust_stats(hw, &adapter->stats, | |
3829 | length, skb->data); | |
3830 | spin_unlock_irqrestore(&adapter->stats_lock, | |
3831 | irq_flags); | |
3832 | length--; | |
3833 | } else { | |
3834 | /* recycle both page and skb */ | |
3835 | buffer_info->skb = skb; | |
3836 | /* an error means any chain goes out the window | |
3837 | * too */ | |
3838 | if (rx_ring->rx_skb_top) | |
3839 | dev_kfree_skb(rx_ring->rx_skb_top); | |
3840 | rx_ring->rx_skb_top = NULL; | |
3841 | goto next_desc; | |
3842 | } | |
3843 | } | |
3844 | ||
3845 | #define rxtop rx_ring->rx_skb_top | |
3846 | if (!(status & E1000_RXD_STAT_EOP)) { | |
3847 | /* this descriptor is only the beginning (or middle) */ | |
3848 | if (!rxtop) { | |
3849 | /* this is the beginning of a chain */ | |
3850 | rxtop = skb; | |
3851 | skb_fill_page_desc(rxtop, 0, buffer_info->page, | |
3852 | 0, length); | |
3853 | } else { | |
3854 | /* this is the middle of a chain */ | |
3855 | skb_fill_page_desc(rxtop, | |
3856 | skb_shinfo(rxtop)->nr_frags, | |
3857 | buffer_info->page, 0, length); | |
3858 | /* re-use the skb, only consumed the page */ | |
3859 | buffer_info->skb = skb; | |
3860 | } | |
3861 | e1000_consume_page(buffer_info, rxtop, length); | |
3862 | goto next_desc; | |
3863 | } else { | |
3864 | if (rxtop) { | |
3865 | /* end of the chain */ | |
3866 | skb_fill_page_desc(rxtop, | |
3867 | skb_shinfo(rxtop)->nr_frags, | |
3868 | buffer_info->page, 0, length); | |
3869 | /* re-use the current skb, we only consumed the | |
3870 | * page */ | |
3871 | buffer_info->skb = skb; | |
3872 | skb = rxtop; | |
3873 | rxtop = NULL; | |
3874 | e1000_consume_page(buffer_info, skb, length); | |
3875 | } else { | |
3876 | /* no chain, got EOP, this buf is the packet | |
3877 | * copybreak to save the put_page/alloc_page */ | |
3878 | if (length <= copybreak && | |
3879 | skb_tailroom(skb) >= length) { | |
3880 | u8 *vaddr; | |
3881 | vaddr = kmap_atomic(buffer_info->page, | |
3882 | KM_SKB_DATA_SOFTIRQ); | |
3883 | memcpy(skb_tail_pointer(skb), vaddr, length); | |
3884 | kunmap_atomic(vaddr, | |
3885 | KM_SKB_DATA_SOFTIRQ); | |
3886 | /* re-use the page, so don't erase | |
3887 | * buffer_info->page */ | |
3888 | skb_put(skb, length); | |
3889 | } else { | |
3890 | skb_fill_page_desc(skb, 0, | |
3891 | buffer_info->page, 0, | |
3892 | length); | |
3893 | e1000_consume_page(buffer_info, skb, | |
3894 | length); | |
3895 | } | |
3896 | } | |
3897 | } | |
3898 | ||
3899 | /* Receive Checksum Offload XXX recompute due to CRC strip? */ | |
3900 | e1000_rx_checksum(adapter, | |
3901 | (u32)(status) | | |
3902 | ((u32)(rx_desc->errors) << 24), | |
3903 | le16_to_cpu(rx_desc->csum), skb); | |
3904 | ||
3905 | pskb_trim(skb, skb->len - 4); | |
3906 | ||
3907 | /* probably a little skewed due to removing CRC */ | |
3908 | total_rx_bytes += skb->len; | |
3909 | total_rx_packets++; | |
3910 | ||
3911 | /* eth type trans needs skb->data to point to something */ | |
3912 | if (!pskb_may_pull(skb, ETH_HLEN)) { | |
feb8f478 | 3913 | e_err(drv, "pskb_may_pull failed.\n"); |
edbbb3ca JB |
3914 | dev_kfree_skb(skb); |
3915 | goto next_desc; | |
3916 | } | |
3917 | ||
edbbb3ca JB |
3918 | e1000_receive_skb(adapter, status, rx_desc->special, skb); |
3919 | ||
3920 | next_desc: | |
3921 | rx_desc->status = 0; | |
3922 | ||
3923 | /* return some buffers to hardware, one at a time is too slow */ | |
3924 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
3925 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
3926 | cleaned_count = 0; | |
3927 | } | |
3928 | ||
3929 | /* use prefetched values */ | |
3930 | rx_desc = next_rxd; | |
3931 | buffer_info = next_buffer; | |
3932 | } | |
3933 | rx_ring->next_to_clean = i; | |
3934 | ||
3935 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
3936 | if (cleaned_count) | |
3937 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
3938 | ||
3939 | adapter->total_rx_packets += total_rx_packets; | |
3940 | adapter->total_rx_bytes += total_rx_bytes; | |
5fe31def AK |
3941 | netdev->stats.rx_bytes += total_rx_bytes; |
3942 | netdev->stats.rx_packets += total_rx_packets; | |
edbbb3ca JB |
3943 | return cleaned; |
3944 | } | |
3945 | ||
57bf6eef JP |
3946 | /* |
3947 | * this should improve performance for small packets with large amounts | |
3948 | * of reassembly being done in the stack | |
3949 | */ | |
3950 | static void e1000_check_copybreak(struct net_device *netdev, | |
3951 | struct e1000_buffer *buffer_info, | |
3952 | u32 length, struct sk_buff **skb) | |
3953 | { | |
3954 | struct sk_buff *new_skb; | |
3955 | ||
3956 | if (length > copybreak) | |
3957 | return; | |
3958 | ||
3959 | new_skb = netdev_alloc_skb_ip_align(netdev, length); | |
3960 | if (!new_skb) | |
3961 | return; | |
3962 | ||
3963 | skb_copy_to_linear_data_offset(new_skb, -NET_IP_ALIGN, | |
3964 | (*skb)->data - NET_IP_ALIGN, | |
3965 | length + NET_IP_ALIGN); | |
3966 | /* save the skb in buffer_info as good */ | |
3967 | buffer_info->skb = *skb; | |
3968 | *skb = new_skb; | |
3969 | } | |
3970 | ||
1da177e4 | 3971 | /** |
2d7edb92 | 3972 | * e1000_clean_rx_irq - Send received data up the network stack; legacy |
1da177e4 | 3973 | * @adapter: board private structure |
edbbb3ca JB |
3974 | * @rx_ring: ring to clean |
3975 | * @work_done: amount of napi work completed this call | |
3976 | * @work_to_do: max amount of work allowed for this call to do | |
3977 | */ | |
64798845 JP |
3978 | static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
3979 | struct e1000_rx_ring *rx_ring, | |
3980 | int *work_done, int work_to_do) | |
1da177e4 | 3981 | { |
1dc32918 | 3982 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
3983 | struct net_device *netdev = adapter->netdev; |
3984 | struct pci_dev *pdev = adapter->pdev; | |
86c3d59f JB |
3985 | struct e1000_rx_desc *rx_desc, *next_rxd; |
3986 | struct e1000_buffer *buffer_info, *next_buffer; | |
1da177e4 | 3987 | unsigned long flags; |
406874a7 | 3988 | u32 length; |
1da177e4 | 3989 | unsigned int i; |
72d64a43 | 3990 | int cleaned_count = 0; |
c3033b01 | 3991 | bool cleaned = false; |
835bb129 | 3992 | unsigned int total_rx_bytes=0, total_rx_packets=0; |
1da177e4 LT |
3993 | |
3994 | i = rx_ring->next_to_clean; | |
3995 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
b92ff8ee | 3996 | buffer_info = &rx_ring->buffer_info[i]; |
1da177e4 | 3997 | |
b92ff8ee | 3998 | while (rx_desc->status & E1000_RXD_STAT_DD) { |
24f476ee | 3999 | struct sk_buff *skb; |
a292ca6e | 4000 | u8 status; |
90fb5135 | 4001 | |
96838a40 | 4002 | if (*work_done >= work_to_do) |
1da177e4 LT |
4003 | break; |
4004 | (*work_done)++; | |
2d0bb1c1 | 4005 | rmb(); /* read descriptor and rx_buffer_info after status DD */ |
c3570acb | 4006 | |
a292ca6e | 4007 | status = rx_desc->status; |
b92ff8ee | 4008 | skb = buffer_info->skb; |
86c3d59f JB |
4009 | buffer_info->skb = NULL; |
4010 | ||
30320be8 JK |
4011 | prefetch(skb->data - NET_IP_ALIGN); |
4012 | ||
86c3d59f JB |
4013 | if (++i == rx_ring->count) i = 0; |
4014 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
30320be8 JK |
4015 | prefetch(next_rxd); |
4016 | ||
86c3d59f | 4017 | next_buffer = &rx_ring->buffer_info[i]; |
86c3d59f | 4018 | |
c3033b01 | 4019 | cleaned = true; |
72d64a43 | 4020 | cleaned_count++; |
b16f53be NN |
4021 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
4022 | buffer_info->length, DMA_FROM_DEVICE); | |
679be3ba | 4023 | buffer_info->dma = 0; |
1da177e4 | 4024 | |
1da177e4 | 4025 | length = le16_to_cpu(rx_desc->length); |
ea30e119 | 4026 | /* !EOP means multiple descriptors were used to store a single |
40a14dea JB |
4027 | * packet, if thats the case we need to toss it. In fact, we |
4028 | * to toss every packet with the EOP bit clear and the next | |
4029 | * frame that _does_ have the EOP bit set, as it is by | |
4030 | * definition only a frame fragment | |
4031 | */ | |
4032 | if (unlikely(!(status & E1000_RXD_STAT_EOP))) | |
4033 | adapter->discarding = true; | |
4034 | ||
4035 | if (adapter->discarding) { | |
a1415ee6 | 4036 | /* All receives must fit into a single buffer */ |
feb8f478 | 4037 | e_dbg("Receive packet consumed multiple buffers\n"); |
864c4e45 | 4038 | /* recycle */ |
8fc897b0 | 4039 | buffer_info->skb = skb; |
40a14dea JB |
4040 | if (status & E1000_RXD_STAT_EOP) |
4041 | adapter->discarding = false; | |
1da177e4 LT |
4042 | goto next_desc; |
4043 | } | |
4044 | ||
96838a40 | 4045 | if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { |
edbbb3ca | 4046 | u8 last_byte = *(skb->data + length - 1); |
1dc32918 JP |
4047 | if (TBI_ACCEPT(hw, status, rx_desc->errors, length, |
4048 | last_byte)) { | |
1da177e4 | 4049 | spin_lock_irqsave(&adapter->stats_lock, flags); |
1dc32918 | 4050 | e1000_tbi_adjust_stats(hw, &adapter->stats, |
1da177e4 LT |
4051 | length, skb->data); |
4052 | spin_unlock_irqrestore(&adapter->stats_lock, | |
4053 | flags); | |
4054 | length--; | |
4055 | } else { | |
9e2feace AK |
4056 | /* recycle */ |
4057 | buffer_info->skb = skb; | |
1da177e4 LT |
4058 | goto next_desc; |
4059 | } | |
1cb5821f | 4060 | } |
1da177e4 | 4061 | |
d2a1e213 JB |
4062 | /* adjust length to remove Ethernet CRC, this must be |
4063 | * done after the TBI_ACCEPT workaround above */ | |
4064 | length -= 4; | |
4065 | ||
835bb129 JB |
4066 | /* probably a little skewed due to removing CRC */ |
4067 | total_rx_bytes += length; | |
4068 | total_rx_packets++; | |
4069 | ||
57bf6eef JP |
4070 | e1000_check_copybreak(netdev, buffer_info, length, &skb); |
4071 | ||
996695de | 4072 | skb_put(skb, length); |
1da177e4 LT |
4073 | |
4074 | /* Receive Checksum Offload */ | |
a292ca6e | 4075 | e1000_rx_checksum(adapter, |
406874a7 JP |
4076 | (u32)(status) | |
4077 | ((u32)(rx_desc->errors) << 24), | |
c3d7a3a4 | 4078 | le16_to_cpu(rx_desc->csum), skb); |
96838a40 | 4079 | |
edbbb3ca | 4080 | e1000_receive_skb(adapter, status, rx_desc->special, skb); |
c3570acb | 4081 | |
1da177e4 LT |
4082 | next_desc: |
4083 | rx_desc->status = 0; | |
1da177e4 | 4084 | |
72d64a43 JK |
4085 | /* return some buffers to hardware, one at a time is too slow */ |
4086 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
4087 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
4088 | cleaned_count = 0; | |
4089 | } | |
4090 | ||
30320be8 | 4091 | /* use prefetched values */ |
86c3d59f JB |
4092 | rx_desc = next_rxd; |
4093 | buffer_info = next_buffer; | |
1da177e4 | 4094 | } |
1da177e4 | 4095 | rx_ring->next_to_clean = i; |
72d64a43 JK |
4096 | |
4097 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
4098 | if (cleaned_count) | |
4099 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
2d7edb92 | 4100 | |
835bb129 JB |
4101 | adapter->total_rx_packets += total_rx_packets; |
4102 | adapter->total_rx_bytes += total_rx_bytes; | |
5fe31def AK |
4103 | netdev->stats.rx_bytes += total_rx_bytes; |
4104 | netdev->stats.rx_packets += total_rx_packets; | |
2d7edb92 MC |
4105 | return cleaned; |
4106 | } | |
4107 | ||
edbbb3ca JB |
4108 | /** |
4109 | * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers | |
4110 | * @adapter: address of board private structure | |
4111 | * @rx_ring: pointer to receive ring structure | |
4112 | * @cleaned_count: number of buffers to allocate this pass | |
4113 | **/ | |
4114 | ||
4115 | static void | |
4116 | e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, | |
4117 | struct e1000_rx_ring *rx_ring, int cleaned_count) | |
4118 | { | |
4119 | struct net_device *netdev = adapter->netdev; | |
4120 | struct pci_dev *pdev = adapter->pdev; | |
4121 | struct e1000_rx_desc *rx_desc; | |
4122 | struct e1000_buffer *buffer_info; | |
4123 | struct sk_buff *skb; | |
4124 | unsigned int i; | |
89d71a66 | 4125 | unsigned int bufsz = 256 - 16 /*for skb_reserve */ ; |
edbbb3ca JB |
4126 | |
4127 | i = rx_ring->next_to_use; | |
4128 | buffer_info = &rx_ring->buffer_info[i]; | |
4129 | ||
4130 | while (cleaned_count--) { | |
4131 | skb = buffer_info->skb; | |
4132 | if (skb) { | |
4133 | skb_trim(skb, 0); | |
4134 | goto check_page; | |
4135 | } | |
4136 | ||
89d71a66 | 4137 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
edbbb3ca JB |
4138 | if (unlikely(!skb)) { |
4139 | /* Better luck next round */ | |
4140 | adapter->alloc_rx_buff_failed++; | |
4141 | break; | |
4142 | } | |
4143 | ||
4144 | /* Fix for errata 23, can't cross 64kB boundary */ | |
4145 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { | |
4146 | struct sk_buff *oldskb = skb; | |
feb8f478 ET |
4147 | e_err(rx_err, "skb align check failed: %u bytes at " |
4148 | "%p\n", bufsz, skb->data); | |
edbbb3ca | 4149 | /* Try again, without freeing the previous */ |
89d71a66 | 4150 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
edbbb3ca JB |
4151 | /* Failed allocation, critical failure */ |
4152 | if (!skb) { | |
4153 | dev_kfree_skb(oldskb); | |
4154 | adapter->alloc_rx_buff_failed++; | |
4155 | break; | |
4156 | } | |
4157 | ||
4158 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { | |
4159 | /* give up */ | |
4160 | dev_kfree_skb(skb); | |
4161 | dev_kfree_skb(oldskb); | |
4162 | break; /* while (cleaned_count--) */ | |
4163 | } | |
4164 | ||
4165 | /* Use new allocation */ | |
4166 | dev_kfree_skb(oldskb); | |
4167 | } | |
edbbb3ca JB |
4168 | buffer_info->skb = skb; |
4169 | buffer_info->length = adapter->rx_buffer_len; | |
4170 | check_page: | |
4171 | /* allocate a new page if necessary */ | |
4172 | if (!buffer_info->page) { | |
4173 | buffer_info->page = alloc_page(GFP_ATOMIC); | |
4174 | if (unlikely(!buffer_info->page)) { | |
4175 | adapter->alloc_rx_buff_failed++; | |
4176 | break; | |
4177 | } | |
4178 | } | |
4179 | ||
b5abb028 | 4180 | if (!buffer_info->dma) { |
b16f53be | 4181 | buffer_info->dma = dma_map_page(&pdev->dev, |
edbbb3ca | 4182 | buffer_info->page, 0, |
b16f53be NN |
4183 | buffer_info->length, |
4184 | DMA_FROM_DEVICE); | |
4185 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { | |
b5abb028 AB |
4186 | put_page(buffer_info->page); |
4187 | dev_kfree_skb(skb); | |
4188 | buffer_info->page = NULL; | |
4189 | buffer_info->skb = NULL; | |
4190 | buffer_info->dma = 0; | |
4191 | adapter->alloc_rx_buff_failed++; | |
4192 | break; /* while !buffer_info->skb */ | |
4193 | } | |
4194 | } | |
edbbb3ca JB |
4195 | |
4196 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
4197 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
4198 | ||
4199 | if (unlikely(++i == rx_ring->count)) | |
4200 | i = 0; | |
4201 | buffer_info = &rx_ring->buffer_info[i]; | |
4202 | } | |
4203 | ||
4204 | if (likely(rx_ring->next_to_use != i)) { | |
4205 | rx_ring->next_to_use = i; | |
4206 | if (unlikely(i-- == 0)) | |
4207 | i = (rx_ring->count - 1); | |
4208 | ||
4209 | /* Force memory writes to complete before letting h/w | |
4210 | * know there are new descriptors to fetch. (Only | |
4211 | * applicable for weak-ordered memory model archs, | |
4212 | * such as IA-64). */ | |
4213 | wmb(); | |
4214 | writel(i, adapter->hw.hw_addr + rx_ring->rdt); | |
4215 | } | |
4216 | } | |
4217 | ||
1da177e4 | 4218 | /** |
2d7edb92 | 4219 | * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
1da177e4 LT |
4220 | * @adapter: address of board private structure |
4221 | **/ | |
4222 | ||
64798845 JP |
4223 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
4224 | struct e1000_rx_ring *rx_ring, | |
4225 | int cleaned_count) | |
1da177e4 | 4226 | { |
1dc32918 | 4227 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
4228 | struct net_device *netdev = adapter->netdev; |
4229 | struct pci_dev *pdev = adapter->pdev; | |
4230 | struct e1000_rx_desc *rx_desc; | |
4231 | struct e1000_buffer *buffer_info; | |
4232 | struct sk_buff *skb; | |
2648345f | 4233 | unsigned int i; |
89d71a66 | 4234 | unsigned int bufsz = adapter->rx_buffer_len; |
1da177e4 LT |
4235 | |
4236 | i = rx_ring->next_to_use; | |
4237 | buffer_info = &rx_ring->buffer_info[i]; | |
4238 | ||
a292ca6e | 4239 | while (cleaned_count--) { |
ca6f7224 CH |
4240 | skb = buffer_info->skb; |
4241 | if (skb) { | |
a292ca6e JK |
4242 | skb_trim(skb, 0); |
4243 | goto map_skb; | |
4244 | } | |
4245 | ||
89d71a66 | 4246 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
96838a40 | 4247 | if (unlikely(!skb)) { |
1da177e4 | 4248 | /* Better luck next round */ |
72d64a43 | 4249 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
4250 | break; |
4251 | } | |
4252 | ||
2648345f | 4253 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
4254 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
4255 | struct sk_buff *oldskb = skb; | |
feb8f478 ET |
4256 | e_err(rx_err, "skb align check failed: %u bytes at " |
4257 | "%p\n", bufsz, skb->data); | |
2648345f | 4258 | /* Try again, without freeing the previous */ |
89d71a66 | 4259 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
2648345f | 4260 | /* Failed allocation, critical failure */ |
1da177e4 LT |
4261 | if (!skb) { |
4262 | dev_kfree_skb(oldskb); | |
edbbb3ca | 4263 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
4264 | break; |
4265 | } | |
2648345f | 4266 | |
1da177e4 LT |
4267 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
4268 | /* give up */ | |
4269 | dev_kfree_skb(skb); | |
4270 | dev_kfree_skb(oldskb); | |
edbbb3ca | 4271 | adapter->alloc_rx_buff_failed++; |
1da177e4 | 4272 | break; /* while !buffer_info->skb */ |
1da177e4 | 4273 | } |
ca6f7224 CH |
4274 | |
4275 | /* Use new allocation */ | |
4276 | dev_kfree_skb(oldskb); | |
1da177e4 | 4277 | } |
1da177e4 LT |
4278 | buffer_info->skb = skb; |
4279 | buffer_info->length = adapter->rx_buffer_len; | |
a292ca6e | 4280 | map_skb: |
b16f53be | 4281 | buffer_info->dma = dma_map_single(&pdev->dev, |
1da177e4 | 4282 | skb->data, |
edbbb3ca | 4283 | buffer_info->length, |
b16f53be NN |
4284 | DMA_FROM_DEVICE); |
4285 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { | |
b5abb028 AB |
4286 | dev_kfree_skb(skb); |
4287 | buffer_info->skb = NULL; | |
4288 | buffer_info->dma = 0; | |
4289 | adapter->alloc_rx_buff_failed++; | |
4290 | break; /* while !buffer_info->skb */ | |
4291 | } | |
1da177e4 | 4292 | |
edbbb3ca JB |
4293 | /* |
4294 | * XXX if it was allocated cleanly it will never map to a | |
4295 | * boundary crossing | |
4296 | */ | |
4297 | ||
2648345f MC |
4298 | /* Fix for errata 23, can't cross 64kB boundary */ |
4299 | if (!e1000_check_64k_bound(adapter, | |
4300 | (void *)(unsigned long)buffer_info->dma, | |
4301 | adapter->rx_buffer_len)) { | |
feb8f478 ET |
4302 | e_err(rx_err, "dma align check failed: %u bytes at " |
4303 | "%p\n", adapter->rx_buffer_len, | |
675ad473 | 4304 | (void *)(unsigned long)buffer_info->dma); |
1da177e4 LT |
4305 | dev_kfree_skb(skb); |
4306 | buffer_info->skb = NULL; | |
4307 | ||
b16f53be | 4308 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
1da177e4 | 4309 | adapter->rx_buffer_len, |
b16f53be | 4310 | DMA_FROM_DEVICE); |
679be3ba | 4311 | buffer_info->dma = 0; |
1da177e4 | 4312 | |
edbbb3ca | 4313 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
4314 | break; /* while !buffer_info->skb */ |
4315 | } | |
1da177e4 LT |
4316 | rx_desc = E1000_RX_DESC(*rx_ring, i); |
4317 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
4318 | ||
96838a40 JB |
4319 | if (unlikely(++i == rx_ring->count)) |
4320 | i = 0; | |
1da177e4 LT |
4321 | buffer_info = &rx_ring->buffer_info[i]; |
4322 | } | |
4323 | ||
b92ff8ee JB |
4324 | if (likely(rx_ring->next_to_use != i)) { |
4325 | rx_ring->next_to_use = i; | |
4326 | if (unlikely(i-- == 0)) | |
4327 | i = (rx_ring->count - 1); | |
4328 | ||
4329 | /* Force memory writes to complete before letting h/w | |
4330 | * know there are new descriptors to fetch. (Only | |
4331 | * applicable for weak-ordered memory model archs, | |
4332 | * such as IA-64). */ | |
4333 | wmb(); | |
1dc32918 | 4334 | writel(i, hw->hw_addr + rx_ring->rdt); |
b92ff8ee | 4335 | } |
1da177e4 LT |
4336 | } |
4337 | ||
4338 | /** | |
4339 | * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. | |
4340 | * @adapter: | |
4341 | **/ | |
4342 | ||
64798845 | 4343 | static void e1000_smartspeed(struct e1000_adapter *adapter) |
1da177e4 | 4344 | { |
1dc32918 | 4345 | struct e1000_hw *hw = &adapter->hw; |
406874a7 JP |
4346 | u16 phy_status; |
4347 | u16 phy_ctrl; | |
1da177e4 | 4348 | |
1dc32918 JP |
4349 | if ((hw->phy_type != e1000_phy_igp) || !hw->autoneg || |
4350 | !(hw->autoneg_advertised & ADVERTISE_1000_FULL)) | |
1da177e4 LT |
4351 | return; |
4352 | ||
96838a40 | 4353 | if (adapter->smartspeed == 0) { |
1da177e4 LT |
4354 | /* If Master/Slave config fault is asserted twice, |
4355 | * we assume back-to-back */ | |
1dc32918 | 4356 | e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); |
96838a40 | 4357 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1dc32918 | 4358 | e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); |
96838a40 | 4359 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1dc32918 | 4360 | e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl); |
96838a40 | 4361 | if (phy_ctrl & CR_1000T_MS_ENABLE) { |
1da177e4 | 4362 | phy_ctrl &= ~CR_1000T_MS_ENABLE; |
1dc32918 | 4363 | e1000_write_phy_reg(hw, PHY_1000T_CTRL, |
1da177e4 LT |
4364 | phy_ctrl); |
4365 | adapter->smartspeed++; | |
1dc32918 JP |
4366 | if (!e1000_phy_setup_autoneg(hw) && |
4367 | !e1000_read_phy_reg(hw, PHY_CTRL, | |
1da177e4 LT |
4368 | &phy_ctrl)) { |
4369 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
4370 | MII_CR_RESTART_AUTO_NEG); | |
1dc32918 | 4371 | e1000_write_phy_reg(hw, PHY_CTRL, |
1da177e4 LT |
4372 | phy_ctrl); |
4373 | } | |
4374 | } | |
4375 | return; | |
96838a40 | 4376 | } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { |
1da177e4 | 4377 | /* If still no link, perhaps using 2/3 pair cable */ |
1dc32918 | 4378 | e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl); |
1da177e4 | 4379 | phy_ctrl |= CR_1000T_MS_ENABLE; |
1dc32918 JP |
4380 | e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_ctrl); |
4381 | if (!e1000_phy_setup_autoneg(hw) && | |
4382 | !e1000_read_phy_reg(hw, PHY_CTRL, &phy_ctrl)) { | |
1da177e4 LT |
4383 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | |
4384 | MII_CR_RESTART_AUTO_NEG); | |
1dc32918 | 4385 | e1000_write_phy_reg(hw, PHY_CTRL, phy_ctrl); |
1da177e4 LT |
4386 | } |
4387 | } | |
4388 | /* Restart process after E1000_SMARTSPEED_MAX iterations */ | |
96838a40 | 4389 | if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX) |
1da177e4 LT |
4390 | adapter->smartspeed = 0; |
4391 | } | |
4392 | ||
4393 | /** | |
4394 | * e1000_ioctl - | |
4395 | * @netdev: | |
4396 | * @ifreq: | |
4397 | * @cmd: | |
4398 | **/ | |
4399 | ||
64798845 | 4400 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
1da177e4 LT |
4401 | { |
4402 | switch (cmd) { | |
4403 | case SIOCGMIIPHY: | |
4404 | case SIOCGMIIREG: | |
4405 | case SIOCSMIIREG: | |
4406 | return e1000_mii_ioctl(netdev, ifr, cmd); | |
4407 | default: | |
4408 | return -EOPNOTSUPP; | |
4409 | } | |
4410 | } | |
4411 | ||
4412 | /** | |
4413 | * e1000_mii_ioctl - | |
4414 | * @netdev: | |
4415 | * @ifreq: | |
4416 | * @cmd: | |
4417 | **/ | |
4418 | ||
64798845 JP |
4419 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
4420 | int cmd) | |
1da177e4 | 4421 | { |
60490fe0 | 4422 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4423 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
4424 | struct mii_ioctl_data *data = if_mii(ifr); |
4425 | int retval; | |
406874a7 | 4426 | u16 mii_reg; |
97876fc6 | 4427 | unsigned long flags; |
1da177e4 | 4428 | |
1dc32918 | 4429 | if (hw->media_type != e1000_media_type_copper) |
1da177e4 LT |
4430 | return -EOPNOTSUPP; |
4431 | ||
4432 | switch (cmd) { | |
4433 | case SIOCGMIIPHY: | |
1dc32918 | 4434 | data->phy_id = hw->phy_addr; |
1da177e4 LT |
4435 | break; |
4436 | case SIOCGMIIREG: | |
97876fc6 | 4437 | spin_lock_irqsave(&adapter->stats_lock, flags); |
1dc32918 | 4438 | if (e1000_read_phy_reg(hw, data->reg_num & 0x1F, |
97876fc6 MC |
4439 | &data->val_out)) { |
4440 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4441 | return -EIO; |
97876fc6 MC |
4442 | } |
4443 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 LT |
4444 | break; |
4445 | case SIOCSMIIREG: | |
96838a40 | 4446 | if (data->reg_num & ~(0x1F)) |
1da177e4 LT |
4447 | return -EFAULT; |
4448 | mii_reg = data->val_in; | |
97876fc6 | 4449 | spin_lock_irqsave(&adapter->stats_lock, flags); |
1dc32918 | 4450 | if (e1000_write_phy_reg(hw, data->reg_num, |
97876fc6 MC |
4451 | mii_reg)) { |
4452 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4453 | return -EIO; |
97876fc6 | 4454 | } |
f0163ac4 | 4455 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
1dc32918 | 4456 | if (hw->media_type == e1000_media_type_copper) { |
1da177e4 LT |
4457 | switch (data->reg_num) { |
4458 | case PHY_CTRL: | |
96838a40 | 4459 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4460 | break; |
96838a40 | 4461 | if (mii_reg & MII_CR_AUTO_NEG_EN) { |
1dc32918 JP |
4462 | hw->autoneg = 1; |
4463 | hw->autoneg_advertised = 0x2F; | |
1da177e4 | 4464 | } else { |
14ad2513 | 4465 | u32 speed; |
1da177e4 | 4466 | if (mii_reg & 0x40) |
14ad2513 | 4467 | speed = SPEED_1000; |
1da177e4 | 4468 | else if (mii_reg & 0x2000) |
14ad2513 | 4469 | speed = SPEED_100; |
1da177e4 | 4470 | else |
14ad2513 DD |
4471 | speed = SPEED_10; |
4472 | retval = e1000_set_spd_dplx( | |
4473 | adapter, speed, | |
4474 | ((mii_reg & 0x100) | |
4475 | ? DUPLEX_FULL : | |
4476 | DUPLEX_HALF)); | |
f0163ac4 | 4477 | if (retval) |
1da177e4 LT |
4478 | return retval; |
4479 | } | |
2db10a08 AK |
4480 | if (netif_running(adapter->netdev)) |
4481 | e1000_reinit_locked(adapter); | |
4482 | else | |
1da177e4 LT |
4483 | e1000_reset(adapter); |
4484 | break; | |
4485 | case M88E1000_PHY_SPEC_CTRL: | |
4486 | case M88E1000_EXT_PHY_SPEC_CTRL: | |
1dc32918 | 4487 | if (e1000_phy_reset(hw)) |
1da177e4 LT |
4488 | return -EIO; |
4489 | break; | |
4490 | } | |
4491 | } else { | |
4492 | switch (data->reg_num) { | |
4493 | case PHY_CTRL: | |
96838a40 | 4494 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4495 | break; |
2db10a08 AK |
4496 | if (netif_running(adapter->netdev)) |
4497 | e1000_reinit_locked(adapter); | |
4498 | else | |
1da177e4 LT |
4499 | e1000_reset(adapter); |
4500 | break; | |
4501 | } | |
4502 | } | |
4503 | break; | |
4504 | default: | |
4505 | return -EOPNOTSUPP; | |
4506 | } | |
4507 | return E1000_SUCCESS; | |
4508 | } | |
4509 | ||
64798845 | 4510 | void e1000_pci_set_mwi(struct e1000_hw *hw) |
1da177e4 LT |
4511 | { |
4512 | struct e1000_adapter *adapter = hw->back; | |
2648345f | 4513 | int ret_val = pci_set_mwi(adapter->pdev); |
1da177e4 | 4514 | |
96838a40 | 4515 | if (ret_val) |
feb8f478 | 4516 | e_err(probe, "Error in setting MWI\n"); |
1da177e4 LT |
4517 | } |
4518 | ||
64798845 | 4519 | void e1000_pci_clear_mwi(struct e1000_hw *hw) |
1da177e4 LT |
4520 | { |
4521 | struct e1000_adapter *adapter = hw->back; | |
4522 | ||
4523 | pci_clear_mwi(adapter->pdev); | |
4524 | } | |
4525 | ||
64798845 | 4526 | int e1000_pcix_get_mmrbc(struct e1000_hw *hw) |
007755eb PO |
4527 | { |
4528 | struct e1000_adapter *adapter = hw->back; | |
4529 | return pcix_get_mmrbc(adapter->pdev); | |
4530 | } | |
4531 | ||
64798845 | 4532 | void e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc) |
007755eb PO |
4533 | { |
4534 | struct e1000_adapter *adapter = hw->back; | |
4535 | pcix_set_mmrbc(adapter->pdev, mmrbc); | |
4536 | } | |
4537 | ||
64798845 | 4538 | void e1000_io_write(struct e1000_hw *hw, unsigned long port, u32 value) |
1da177e4 LT |
4539 | { |
4540 | outl(value, port); | |
4541 | } | |
4542 | ||
5622e404 JP |
4543 | static bool e1000_vlan_used(struct e1000_adapter *adapter) |
4544 | { | |
4545 | u16 vid; | |
4546 | ||
4547 | for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) | |
4548 | return true; | |
4549 | return false; | |
4550 | } | |
4551 | ||
4552 | static void e1000_vlan_filter_on_off(struct e1000_adapter *adapter, | |
4553 | bool filter_on) | |
1da177e4 | 4554 | { |
1dc32918 | 4555 | struct e1000_hw *hw = &adapter->hw; |
5622e404 | 4556 | u32 rctl; |
1da177e4 | 4557 | |
9150b76a JB |
4558 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4559 | e1000_irq_disable(adapter); | |
1da177e4 | 4560 | |
5622e404 | 4561 | if (filter_on) { |
1532ecea JB |
4562 | /* enable VLAN receive filtering */ |
4563 | rctl = er32(RCTL); | |
4564 | rctl &= ~E1000_RCTL_CFIEN; | |
5622e404 | 4565 | if (!(adapter->netdev->flags & IFF_PROMISC)) |
1532ecea JB |
4566 | rctl |= E1000_RCTL_VFE; |
4567 | ew32(RCTL, rctl); | |
4568 | e1000_update_mng_vlan(adapter); | |
1da177e4 | 4569 | } else { |
1532ecea JB |
4570 | /* disable VLAN receive filtering */ |
4571 | rctl = er32(RCTL); | |
4572 | rctl &= ~E1000_RCTL_VFE; | |
4573 | ew32(RCTL, rctl); | |
5622e404 | 4574 | } |
fd38d7a0 | 4575 | |
5622e404 JP |
4576 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4577 | e1000_irq_enable(adapter); | |
4578 | } | |
4579 | ||
4580 | static void e1000_vlan_mode(struct net_device *netdev, u32 features) | |
4581 | { | |
4582 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4583 | struct e1000_hw *hw = &adapter->hw; | |
4584 | u32 ctrl; | |
4585 | ||
4586 | if (!test_bit(__E1000_DOWN, &adapter->flags)) | |
4587 | e1000_irq_disable(adapter); | |
4588 | ||
4589 | ctrl = er32(CTRL); | |
4590 | if (features & NETIF_F_HW_VLAN_RX) { | |
4591 | /* enable VLAN tag insert/strip */ | |
4592 | ctrl |= E1000_CTRL_VME; | |
4593 | } else { | |
4594 | /* disable VLAN tag insert/strip */ | |
4595 | ctrl &= ~E1000_CTRL_VME; | |
1da177e4 | 4596 | } |
5622e404 | 4597 | ew32(CTRL, ctrl); |
1da177e4 | 4598 | |
9150b76a JB |
4599 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4600 | e1000_irq_enable(adapter); | |
1da177e4 LT |
4601 | } |
4602 | ||
64798845 | 4603 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
1da177e4 | 4604 | { |
60490fe0 | 4605 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4606 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 4607 | u32 vfta, index; |
96838a40 | 4608 | |
1dc32918 | 4609 | if ((hw->mng_cookie.status & |
96838a40 JB |
4610 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
4611 | (vid == adapter->mng_vlan_id)) | |
2d7edb92 | 4612 | return; |
5622e404 JP |
4613 | |
4614 | if (!e1000_vlan_used(adapter)) | |
4615 | e1000_vlan_filter_on_off(adapter, true); | |
4616 | ||
1da177e4 LT |
4617 | /* add VID to filter table */ |
4618 | index = (vid >> 5) & 0x7F; | |
1dc32918 | 4619 | vfta = E1000_READ_REG_ARRAY(hw, VFTA, index); |
1da177e4 | 4620 | vfta |= (1 << (vid & 0x1F)); |
1dc32918 | 4621 | e1000_write_vfta(hw, index, vfta); |
5622e404 JP |
4622 | |
4623 | set_bit(vid, adapter->active_vlans); | |
1da177e4 LT |
4624 | } |
4625 | ||
64798845 | 4626 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
1da177e4 | 4627 | { |
60490fe0 | 4628 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4629 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 4630 | u32 vfta, index; |
1da177e4 | 4631 | |
9150b76a JB |
4632 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4633 | e1000_irq_disable(adapter); | |
9150b76a JB |
4634 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4635 | e1000_irq_enable(adapter); | |
1da177e4 LT |
4636 | |
4637 | /* remove VID from filter table */ | |
4638 | index = (vid >> 5) & 0x7F; | |
1dc32918 | 4639 | vfta = E1000_READ_REG_ARRAY(hw, VFTA, index); |
1da177e4 | 4640 | vfta &= ~(1 << (vid & 0x1F)); |
1dc32918 | 4641 | e1000_write_vfta(hw, index, vfta); |
5622e404 JP |
4642 | |
4643 | clear_bit(vid, adapter->active_vlans); | |
4644 | ||
4645 | if (!e1000_vlan_used(adapter)) | |
4646 | e1000_vlan_filter_on_off(adapter, false); | |
1da177e4 LT |
4647 | } |
4648 | ||
64798845 | 4649 | static void e1000_restore_vlan(struct e1000_adapter *adapter) |
1da177e4 | 4650 | { |
5622e404 | 4651 | u16 vid; |
1da177e4 | 4652 | |
5622e404 JP |
4653 | if (!e1000_vlan_used(adapter)) |
4654 | return; | |
4655 | ||
4656 | e1000_vlan_filter_on_off(adapter, true); | |
4657 | for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) | |
4658 | e1000_vlan_rx_add_vid(adapter->netdev, vid); | |
1da177e4 LT |
4659 | } |
4660 | ||
14ad2513 | 4661 | int e1000_set_spd_dplx(struct e1000_adapter *adapter, u32 spd, u8 dplx) |
1da177e4 | 4662 | { |
1dc32918 JP |
4663 | struct e1000_hw *hw = &adapter->hw; |
4664 | ||
4665 | hw->autoneg = 0; | |
1da177e4 | 4666 | |
14ad2513 DD |
4667 | /* Make sure dplx is at most 1 bit and lsb of speed is not set |
4668 | * for the switch() below to work */ | |
4669 | if ((spd & 1) || (dplx & ~1)) | |
4670 | goto err_inval; | |
4671 | ||
6921368f | 4672 | /* Fiber NICs only allow 1000 gbps Full duplex */ |
1dc32918 | 4673 | if ((hw->media_type == e1000_media_type_fiber) && |
14ad2513 DD |
4674 | spd != SPEED_1000 && |
4675 | dplx != DUPLEX_FULL) | |
4676 | goto err_inval; | |
6921368f | 4677 | |
14ad2513 | 4678 | switch (spd + dplx) { |
1da177e4 | 4679 | case SPEED_10 + DUPLEX_HALF: |
1dc32918 | 4680 | hw->forced_speed_duplex = e1000_10_half; |
1da177e4 LT |
4681 | break; |
4682 | case SPEED_10 + DUPLEX_FULL: | |
1dc32918 | 4683 | hw->forced_speed_duplex = e1000_10_full; |
1da177e4 LT |
4684 | break; |
4685 | case SPEED_100 + DUPLEX_HALF: | |
1dc32918 | 4686 | hw->forced_speed_duplex = e1000_100_half; |
1da177e4 LT |
4687 | break; |
4688 | case SPEED_100 + DUPLEX_FULL: | |
1dc32918 | 4689 | hw->forced_speed_duplex = e1000_100_full; |
1da177e4 LT |
4690 | break; |
4691 | case SPEED_1000 + DUPLEX_FULL: | |
1dc32918 JP |
4692 | hw->autoneg = 1; |
4693 | hw->autoneg_advertised = ADVERTISE_1000_FULL; | |
1da177e4 LT |
4694 | break; |
4695 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ | |
4696 | default: | |
14ad2513 | 4697 | goto err_inval; |
1da177e4 LT |
4698 | } |
4699 | return 0; | |
14ad2513 DD |
4700 | |
4701 | err_inval: | |
4702 | e_err(probe, "Unsupported Speed/Duplex configuration\n"); | |
4703 | return -EINVAL; | |
1da177e4 LT |
4704 | } |
4705 | ||
b43fcd7d | 4706 | static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake) |
1da177e4 LT |
4707 | { |
4708 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 4709 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4710 | struct e1000_hw *hw = &adapter->hw; |
406874a7 JP |
4711 | u32 ctrl, ctrl_ext, rctl, status; |
4712 | u32 wufc = adapter->wol; | |
6fdfef16 | 4713 | #ifdef CONFIG_PM |
240b1710 | 4714 | int retval = 0; |
6fdfef16 | 4715 | #endif |
1da177e4 LT |
4716 | |
4717 | netif_device_detach(netdev); | |
4718 | ||
0ef4eedc JB |
4719 | mutex_lock(&adapter->mutex); |
4720 | ||
2db10a08 AK |
4721 | if (netif_running(netdev)) { |
4722 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); | |
1da177e4 | 4723 | e1000_down(adapter); |
2db10a08 | 4724 | } |
1da177e4 | 4725 | |
2f82665f | 4726 | #ifdef CONFIG_PM |
1d33e9c6 | 4727 | retval = pci_save_state(pdev); |
0ef4eedc JB |
4728 | if (retval) { |
4729 | mutex_unlock(&adapter->mutex); | |
2f82665f | 4730 | return retval; |
0ef4eedc | 4731 | } |
2f82665f JB |
4732 | #endif |
4733 | ||
1dc32918 | 4734 | status = er32(STATUS); |
96838a40 | 4735 | if (status & E1000_STATUS_LU) |
1da177e4 LT |
4736 | wufc &= ~E1000_WUFC_LNKC; |
4737 | ||
96838a40 | 4738 | if (wufc) { |
1da177e4 | 4739 | e1000_setup_rctl(adapter); |
db0ce50d | 4740 | e1000_set_rx_mode(netdev); |
1da177e4 LT |
4741 | |
4742 | /* turn on all-multi mode if wake on multicast is enabled */ | |
120cd576 | 4743 | if (wufc & E1000_WUFC_MC) { |
1dc32918 | 4744 | rctl = er32(RCTL); |
1da177e4 | 4745 | rctl |= E1000_RCTL_MPE; |
1dc32918 | 4746 | ew32(RCTL, rctl); |
1da177e4 LT |
4747 | } |
4748 | ||
1dc32918 JP |
4749 | if (hw->mac_type >= e1000_82540) { |
4750 | ctrl = er32(CTRL); | |
1da177e4 LT |
4751 | /* advertise wake from D3Cold */ |
4752 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
4753 | /* phy power management enable */ | |
4754 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
4755 | ctrl |= E1000_CTRL_ADVD3WUC | | |
4756 | E1000_CTRL_EN_PHY_PWR_MGMT; | |
1dc32918 | 4757 | ew32(CTRL, ctrl); |
1da177e4 LT |
4758 | } |
4759 | ||
1dc32918 | 4760 | if (hw->media_type == e1000_media_type_fiber || |
1532ecea | 4761 | hw->media_type == e1000_media_type_internal_serdes) { |
1da177e4 | 4762 | /* keep the laser running in D3 */ |
1dc32918 | 4763 | ctrl_ext = er32(CTRL_EXT); |
1da177e4 | 4764 | ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; |
1dc32918 | 4765 | ew32(CTRL_EXT, ctrl_ext); |
1da177e4 LT |
4766 | } |
4767 | ||
1dc32918 JP |
4768 | ew32(WUC, E1000_WUC_PME_EN); |
4769 | ew32(WUFC, wufc); | |
1da177e4 | 4770 | } else { |
1dc32918 JP |
4771 | ew32(WUC, 0); |
4772 | ew32(WUFC, 0); | |
1da177e4 LT |
4773 | } |
4774 | ||
0fccd0e9 JG |
4775 | e1000_release_manageability(adapter); |
4776 | ||
b43fcd7d RW |
4777 | *enable_wake = !!wufc; |
4778 | ||
0fccd0e9 | 4779 | /* make sure adapter isn't asleep if manageability is enabled */ |
b43fcd7d RW |
4780 | if (adapter->en_mng_pt) |
4781 | *enable_wake = true; | |
1da177e4 | 4782 | |
edd106fc AK |
4783 | if (netif_running(netdev)) |
4784 | e1000_free_irq(adapter); | |
4785 | ||
0ef4eedc JB |
4786 | mutex_unlock(&adapter->mutex); |
4787 | ||
1da177e4 | 4788 | pci_disable_device(pdev); |
240b1710 | 4789 | |
1da177e4 LT |
4790 | return 0; |
4791 | } | |
4792 | ||
2f82665f | 4793 | #ifdef CONFIG_PM |
b43fcd7d RW |
4794 | static int e1000_suspend(struct pci_dev *pdev, pm_message_t state) |
4795 | { | |
4796 | int retval; | |
4797 | bool wake; | |
4798 | ||
4799 | retval = __e1000_shutdown(pdev, &wake); | |
4800 | if (retval) | |
4801 | return retval; | |
4802 | ||
4803 | if (wake) { | |
4804 | pci_prepare_to_sleep(pdev); | |
4805 | } else { | |
4806 | pci_wake_from_d3(pdev, false); | |
4807 | pci_set_power_state(pdev, PCI_D3hot); | |
4808 | } | |
4809 | ||
4810 | return 0; | |
4811 | } | |
4812 | ||
64798845 | 4813 | static int e1000_resume(struct pci_dev *pdev) |
1da177e4 LT |
4814 | { |
4815 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 4816 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4817 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 4818 | u32 err; |
1da177e4 | 4819 | |
d0e027db | 4820 | pci_set_power_state(pdev, PCI_D0); |
1d33e9c6 | 4821 | pci_restore_state(pdev); |
dbb5aaeb | 4822 | pci_save_state(pdev); |
81250297 TI |
4823 | |
4824 | if (adapter->need_ioport) | |
4825 | err = pci_enable_device(pdev); | |
4826 | else | |
4827 | err = pci_enable_device_mem(pdev); | |
c7be73bc | 4828 | if (err) { |
675ad473 | 4829 | pr_err("Cannot enable PCI device from suspend\n"); |
3d1dd8cb AK |
4830 | return err; |
4831 | } | |
a4cb847d | 4832 | pci_set_master(pdev); |
1da177e4 | 4833 | |
d0e027db AK |
4834 | pci_enable_wake(pdev, PCI_D3hot, 0); |
4835 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
1da177e4 | 4836 | |
c7be73bc JP |
4837 | if (netif_running(netdev)) { |
4838 | err = e1000_request_irq(adapter); | |
4839 | if (err) | |
4840 | return err; | |
4841 | } | |
edd106fc AK |
4842 | |
4843 | e1000_power_up_phy(adapter); | |
1da177e4 | 4844 | e1000_reset(adapter); |
1dc32918 | 4845 | ew32(WUS, ~0); |
1da177e4 | 4846 | |
0fccd0e9 JG |
4847 | e1000_init_manageability(adapter); |
4848 | ||
96838a40 | 4849 | if (netif_running(netdev)) |
1da177e4 LT |
4850 | e1000_up(adapter); |
4851 | ||
4852 | netif_device_attach(netdev); | |
4853 | ||
1da177e4 LT |
4854 | return 0; |
4855 | } | |
4856 | #endif | |
c653e635 AK |
4857 | |
4858 | static void e1000_shutdown(struct pci_dev *pdev) | |
4859 | { | |
b43fcd7d RW |
4860 | bool wake; |
4861 | ||
4862 | __e1000_shutdown(pdev, &wake); | |
4863 | ||
4864 | if (system_state == SYSTEM_POWER_OFF) { | |
4865 | pci_wake_from_d3(pdev, wake); | |
4866 | pci_set_power_state(pdev, PCI_D3hot); | |
4867 | } | |
c653e635 AK |
4868 | } |
4869 | ||
1da177e4 LT |
4870 | #ifdef CONFIG_NET_POLL_CONTROLLER |
4871 | /* | |
4872 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
4873 | * without having to re-enable interrupts. It's not called while | |
4874 | * the interrupt routine is executing. | |
4875 | */ | |
64798845 | 4876 | static void e1000_netpoll(struct net_device *netdev) |
1da177e4 | 4877 | { |
60490fe0 | 4878 | struct e1000_adapter *adapter = netdev_priv(netdev); |
d3d9e484 | 4879 | |
1da177e4 | 4880 | disable_irq(adapter->pdev->irq); |
7d12e780 | 4881 | e1000_intr(adapter->pdev->irq, netdev); |
1da177e4 LT |
4882 | enable_irq(adapter->pdev->irq); |
4883 | } | |
4884 | #endif | |
4885 | ||
9026729b AK |
4886 | /** |
4887 | * e1000_io_error_detected - called when PCI error is detected | |
4888 | * @pdev: Pointer to PCI device | |
120a5d0d | 4889 | * @state: The current pci connection state |
9026729b AK |
4890 | * |
4891 | * This function is called after a PCI bus error affecting | |
4892 | * this device has been detected. | |
4893 | */ | |
64798845 JP |
4894 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
4895 | pci_channel_state_t state) | |
9026729b AK |
4896 | { |
4897 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4cf1653a | 4898 | struct e1000_adapter *adapter = netdev_priv(netdev); |
9026729b AK |
4899 | |
4900 | netif_device_detach(netdev); | |
4901 | ||
eab63302 AD |
4902 | if (state == pci_channel_io_perm_failure) |
4903 | return PCI_ERS_RESULT_DISCONNECT; | |
4904 | ||
9026729b AK |
4905 | if (netif_running(netdev)) |
4906 | e1000_down(adapter); | |
72e8d6bb | 4907 | pci_disable_device(pdev); |
9026729b AK |
4908 | |
4909 | /* Request a slot slot reset. */ | |
4910 | return PCI_ERS_RESULT_NEED_RESET; | |
4911 | } | |
4912 | ||
4913 | /** | |
4914 | * e1000_io_slot_reset - called after the pci bus has been reset. | |
4915 | * @pdev: Pointer to PCI device | |
4916 | * | |
4917 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
4918 | * resembles the first-half of the e1000_resume routine. | |
4919 | */ | |
4920 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) | |
4921 | { | |
4922 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4cf1653a | 4923 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4924 | struct e1000_hw *hw = &adapter->hw; |
81250297 | 4925 | int err; |
9026729b | 4926 | |
81250297 TI |
4927 | if (adapter->need_ioport) |
4928 | err = pci_enable_device(pdev); | |
4929 | else | |
4930 | err = pci_enable_device_mem(pdev); | |
4931 | if (err) { | |
675ad473 | 4932 | pr_err("Cannot re-enable PCI device after reset.\n"); |
9026729b AK |
4933 | return PCI_ERS_RESULT_DISCONNECT; |
4934 | } | |
4935 | pci_set_master(pdev); | |
4936 | ||
dbf38c94 LV |
4937 | pci_enable_wake(pdev, PCI_D3hot, 0); |
4938 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
9026729b | 4939 | |
9026729b | 4940 | e1000_reset(adapter); |
1dc32918 | 4941 | ew32(WUS, ~0); |
9026729b AK |
4942 | |
4943 | return PCI_ERS_RESULT_RECOVERED; | |
4944 | } | |
4945 | ||
4946 | /** | |
4947 | * e1000_io_resume - called when traffic can start flowing again. | |
4948 | * @pdev: Pointer to PCI device | |
4949 | * | |
4950 | * This callback is called when the error recovery driver tells us that | |
4951 | * its OK to resume normal operation. Implementation resembles the | |
4952 | * second-half of the e1000_resume routine. | |
4953 | */ | |
4954 | static void e1000_io_resume(struct pci_dev *pdev) | |
4955 | { | |
4956 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4cf1653a | 4957 | struct e1000_adapter *adapter = netdev_priv(netdev); |
0fccd0e9 JG |
4958 | |
4959 | e1000_init_manageability(adapter); | |
9026729b AK |
4960 | |
4961 | if (netif_running(netdev)) { | |
4962 | if (e1000_up(adapter)) { | |
675ad473 | 4963 | pr_info("can't bring device back up after reset\n"); |
9026729b AK |
4964 | return; |
4965 | } | |
4966 | } | |
4967 | ||
4968 | netif_device_attach(netdev); | |
9026729b AK |
4969 | } |
4970 | ||
1da177e4 | 4971 | /* e1000_main.c */ |