Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /******************************************************************************* |
2 | ||
0abb6eb1 AK |
3 | Intel PRO/1000 Linux driver |
4 | Copyright(c) 1999 - 2006 Intel Corporation. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify it | |
7 | under the terms and conditions of the GNU General Public License, | |
8 | version 2, as published by the Free Software Foundation. | |
9 | ||
10 | This program is distributed in the hope it will be useful, but WITHOUT | |
11 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
1da177e4 | 13 | more details. |
0abb6eb1 | 14 | |
1da177e4 | 15 | You should have received a copy of the GNU General Public License along with |
0abb6eb1 AK |
16 | this program; if not, write to the Free Software Foundation, Inc., |
17 | 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | ||
19 | The full GNU General Public License is included in this distribution in | |
20 | the file called "COPYING". | |
21 | ||
1da177e4 LT |
22 | Contact Information: |
23 | Linux NICS <linux.nics@intel.com> | |
3d41e30a | 24 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
1da177e4 LT |
25 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
26 | ||
27 | *******************************************************************************/ | |
28 | ||
29 | #include "e1000.h" | |
d0bb53e1 | 30 | #include <net/ip6_checksum.h> |
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); |
1da177e4 | 134 | static void e1000_update_phy_info(unsigned long data); |
5cf42fcd | 135 | static void e1000_update_phy_info_task(struct work_struct *work); |
1da177e4 | 136 | static void e1000_watchdog(unsigned long data); |
1da177e4 | 137 | static void e1000_82547_tx_fifo_stall(unsigned long data); |
5cf42fcd | 138 | static void e1000_82547_tx_fifo_stall_task(struct work_struct *work); |
3b29a56d SH |
139 | static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
140 | struct net_device *netdev); | |
1da177e4 LT |
141 | static struct net_device_stats * e1000_get_stats(struct net_device *netdev); |
142 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu); | |
143 | static int e1000_set_mac(struct net_device *netdev, void *p); | |
7d12e780 | 144 | static irqreturn_t e1000_intr(int irq, void *data); |
c3033b01 JP |
145 | static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
146 | struct e1000_tx_ring *tx_ring); | |
bea3348e | 147 | static int e1000_clean(struct napi_struct *napi, int budget); |
c3033b01 JP |
148 | static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
149 | struct e1000_rx_ring *rx_ring, | |
150 | int *work_done, int work_to_do); | |
edbbb3ca JB |
151 | static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, |
152 | struct e1000_rx_ring *rx_ring, | |
153 | int *work_done, int work_to_do); | |
581d708e | 154 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
edbbb3ca | 155 | struct e1000_rx_ring *rx_ring, |
72d64a43 | 156 | int cleaned_count); |
edbbb3ca JB |
157 | static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, |
158 | struct e1000_rx_ring *rx_ring, | |
159 | int cleaned_count); | |
1da177e4 LT |
160 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); |
161 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
162 | int cmd); | |
1da177e4 LT |
163 | static void e1000_enter_82542_rst(struct e1000_adapter *adapter); |
164 | static void e1000_leave_82542_rst(struct e1000_adapter *adapter); | |
165 | static void e1000_tx_timeout(struct net_device *dev); | |
65f27f38 | 166 | static void e1000_reset_task(struct work_struct *work); |
1da177e4 | 167 | static void e1000_smartspeed(struct e1000_adapter *adapter); |
e619d523 AK |
168 | static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
169 | struct sk_buff *skb); | |
1da177e4 | 170 | |
5622e404 JP |
171 | static bool e1000_vlan_used(struct e1000_adapter *adapter); |
172 | static void e1000_vlan_mode(struct net_device *netdev, u32 features); | |
406874a7 JP |
173 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid); |
174 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid); | |
1da177e4 LT |
175 | static void e1000_restore_vlan(struct e1000_adapter *adapter); |
176 | ||
6fdfef16 | 177 | #ifdef CONFIG_PM |
b43fcd7d | 178 | static int e1000_suspend(struct pci_dev *pdev, pm_message_t state); |
1da177e4 LT |
179 | static int e1000_resume(struct pci_dev *pdev); |
180 | #endif | |
c653e635 | 181 | static void e1000_shutdown(struct pci_dev *pdev); |
1da177e4 LT |
182 | |
183 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
184 | /* for netdump / net console */ | |
185 | static void e1000_netpoll (struct net_device *netdev); | |
186 | #endif | |
187 | ||
1f753861 JB |
188 | #define COPYBREAK_DEFAULT 256 |
189 | static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT; | |
190 | module_param(copybreak, uint, 0644); | |
191 | MODULE_PARM_DESC(copybreak, | |
192 | "Maximum size of packet that is copied to a new buffer on receive"); | |
193 | ||
9026729b AK |
194 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
195 | pci_channel_state_t state); | |
196 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev); | |
197 | static void e1000_io_resume(struct pci_dev *pdev); | |
198 | ||
199 | static struct pci_error_handlers e1000_err_handler = { | |
200 | .error_detected = e1000_io_error_detected, | |
201 | .slot_reset = e1000_io_slot_reset, | |
202 | .resume = e1000_io_resume, | |
203 | }; | |
24025e4e | 204 | |
1da177e4 LT |
205 | static struct pci_driver e1000_driver = { |
206 | .name = e1000_driver_name, | |
207 | .id_table = e1000_pci_tbl, | |
208 | .probe = e1000_probe, | |
209 | .remove = __devexit_p(e1000_remove), | |
c4e24f01 | 210 | #ifdef CONFIG_PM |
25985edc | 211 | /* Power Management Hooks */ |
1da177e4 | 212 | .suspend = e1000_suspend, |
c653e635 | 213 | .resume = e1000_resume, |
1da177e4 | 214 | #endif |
9026729b AK |
215 | .shutdown = e1000_shutdown, |
216 | .err_handler = &e1000_err_handler | |
1da177e4 LT |
217 | }; |
218 | ||
219 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
220 | MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); | |
221 | MODULE_LICENSE("GPL"); | |
222 | MODULE_VERSION(DRV_VERSION); | |
223 | ||
224 | static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; | |
225 | module_param(debug, int, 0); | |
226 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
227 | ||
675ad473 ET |
228 | /** |
229 | * e1000_get_hw_dev - return device | |
230 | * used by hardware layer to print debugging information | |
231 | * | |
232 | **/ | |
233 | struct net_device *e1000_get_hw_dev(struct e1000_hw *hw) | |
234 | { | |
235 | struct e1000_adapter *adapter = hw->back; | |
236 | return adapter->netdev; | |
237 | } | |
238 | ||
1da177e4 LT |
239 | /** |
240 | * e1000_init_module - Driver Registration Routine | |
241 | * | |
242 | * e1000_init_module is the first routine called when the driver is | |
243 | * loaded. All it does is register with the PCI subsystem. | |
244 | **/ | |
245 | ||
64798845 | 246 | static int __init e1000_init_module(void) |
1da177e4 LT |
247 | { |
248 | int ret; | |
675ad473 | 249 | pr_info("%s - version %s\n", e1000_driver_string, e1000_driver_version); |
1da177e4 | 250 | |
675ad473 | 251 | pr_info("%s\n", e1000_copyright); |
1da177e4 | 252 | |
29917620 | 253 | ret = pci_register_driver(&e1000_driver); |
1f753861 JB |
254 | if (copybreak != COPYBREAK_DEFAULT) { |
255 | if (copybreak == 0) | |
675ad473 | 256 | pr_info("copybreak disabled\n"); |
1f753861 | 257 | else |
675ad473 ET |
258 | pr_info("copybreak enabled for " |
259 | "packets <= %u bytes\n", copybreak); | |
1f753861 | 260 | } |
1da177e4 LT |
261 | return ret; |
262 | } | |
263 | ||
264 | module_init(e1000_init_module); | |
265 | ||
266 | /** | |
267 | * e1000_exit_module - Driver Exit Cleanup Routine | |
268 | * | |
269 | * e1000_exit_module is called just before the driver is removed | |
270 | * from memory. | |
271 | **/ | |
272 | ||
64798845 | 273 | static void __exit e1000_exit_module(void) |
1da177e4 | 274 | { |
1da177e4 LT |
275 | pci_unregister_driver(&e1000_driver); |
276 | } | |
277 | ||
278 | module_exit(e1000_exit_module); | |
279 | ||
2db10a08 AK |
280 | static int e1000_request_irq(struct e1000_adapter *adapter) |
281 | { | |
282 | struct net_device *netdev = adapter->netdev; | |
3e18826c | 283 | irq_handler_t handler = e1000_intr; |
e94bd23f AK |
284 | int irq_flags = IRQF_SHARED; |
285 | int err; | |
2db10a08 | 286 | |
e94bd23f AK |
287 | err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name, |
288 | netdev); | |
289 | if (err) { | |
feb8f478 | 290 | e_err(probe, "Unable to allocate interrupt Error: %d\n", err); |
e94bd23f | 291 | } |
2db10a08 AK |
292 | |
293 | return err; | |
294 | } | |
295 | ||
296 | static void e1000_free_irq(struct e1000_adapter *adapter) | |
297 | { | |
298 | struct net_device *netdev = adapter->netdev; | |
299 | ||
300 | free_irq(adapter->pdev->irq, netdev); | |
2db10a08 AK |
301 | } |
302 | ||
1da177e4 LT |
303 | /** |
304 | * e1000_irq_disable - Mask off interrupt generation on the NIC | |
305 | * @adapter: board private structure | |
306 | **/ | |
307 | ||
64798845 | 308 | static void e1000_irq_disable(struct e1000_adapter *adapter) |
1da177e4 | 309 | { |
1dc32918 JP |
310 | struct e1000_hw *hw = &adapter->hw; |
311 | ||
312 | ew32(IMC, ~0); | |
313 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
314 | synchronize_irq(adapter->pdev->irq); |
315 | } | |
316 | ||
317 | /** | |
318 | * e1000_irq_enable - Enable default interrupt generation settings | |
319 | * @adapter: board private structure | |
320 | **/ | |
321 | ||
64798845 | 322 | static void e1000_irq_enable(struct e1000_adapter *adapter) |
1da177e4 | 323 | { |
1dc32918 JP |
324 | struct e1000_hw *hw = &adapter->hw; |
325 | ||
326 | ew32(IMS, IMS_ENABLE_MASK); | |
327 | E1000_WRITE_FLUSH(); | |
1da177e4 | 328 | } |
3ad2cc67 | 329 | |
64798845 | 330 | static void e1000_update_mng_vlan(struct e1000_adapter *adapter) |
2d7edb92 | 331 | { |
1dc32918 | 332 | struct e1000_hw *hw = &adapter->hw; |
2d7edb92 | 333 | struct net_device *netdev = adapter->netdev; |
1dc32918 | 334 | u16 vid = hw->mng_cookie.vlan_id; |
406874a7 | 335 | u16 old_vid = adapter->mng_vlan_id; |
96838a40 | 336 | |
5622e404 JP |
337 | if (!e1000_vlan_used(adapter)) |
338 | return; | |
339 | ||
340 | if (!test_bit(vid, adapter->active_vlans)) { | |
341 | if (hw->mng_cookie.status & | |
342 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) { | |
343 | e1000_vlan_rx_add_vid(netdev, vid); | |
c5f226fe | 344 | adapter->mng_vlan_id = vid; |
5622e404 JP |
345 | } else { |
346 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
347 | } | |
348 | if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && | |
349 | (vid != old_vid) && | |
350 | !test_bit(old_vid, adapter->active_vlans)) | |
351 | e1000_vlan_rx_kill_vid(netdev, old_vid); | |
352 | } else { | |
353 | adapter->mng_vlan_id = vid; | |
2d7edb92 MC |
354 | } |
355 | } | |
b55ccb35 | 356 | |
64798845 | 357 | static void e1000_init_manageability(struct e1000_adapter *adapter) |
0fccd0e9 | 358 | { |
1dc32918 JP |
359 | struct e1000_hw *hw = &adapter->hw; |
360 | ||
0fccd0e9 | 361 | if (adapter->en_mng_pt) { |
1dc32918 | 362 | u32 manc = er32(MANC); |
0fccd0e9 JG |
363 | |
364 | /* disable hardware interception of ARP */ | |
365 | manc &= ~(E1000_MANC_ARP_EN); | |
366 | ||
1dc32918 | 367 | ew32(MANC, manc); |
0fccd0e9 JG |
368 | } |
369 | } | |
370 | ||
64798845 | 371 | static void e1000_release_manageability(struct e1000_adapter *adapter) |
0fccd0e9 | 372 | { |
1dc32918 JP |
373 | struct e1000_hw *hw = &adapter->hw; |
374 | ||
0fccd0e9 | 375 | if (adapter->en_mng_pt) { |
1dc32918 | 376 | u32 manc = er32(MANC); |
0fccd0e9 JG |
377 | |
378 | /* re-enable hardware interception of ARP */ | |
379 | manc |= E1000_MANC_ARP_EN; | |
380 | ||
1dc32918 | 381 | ew32(MANC, manc); |
0fccd0e9 JG |
382 | } |
383 | } | |
384 | ||
e0aac5a2 AK |
385 | /** |
386 | * e1000_configure - configure the hardware for RX and TX | |
387 | * @adapter = private board structure | |
388 | **/ | |
389 | static void e1000_configure(struct e1000_adapter *adapter) | |
1da177e4 LT |
390 | { |
391 | struct net_device *netdev = adapter->netdev; | |
2db10a08 | 392 | int i; |
1da177e4 | 393 | |
db0ce50d | 394 | e1000_set_rx_mode(netdev); |
1da177e4 LT |
395 | |
396 | e1000_restore_vlan(adapter); | |
0fccd0e9 | 397 | e1000_init_manageability(adapter); |
1da177e4 LT |
398 | |
399 | e1000_configure_tx(adapter); | |
400 | e1000_setup_rctl(adapter); | |
401 | e1000_configure_rx(adapter); | |
72d64a43 JK |
402 | /* call E1000_DESC_UNUSED which always leaves |
403 | * at least 1 descriptor unused to make sure | |
404 | * next_to_use != next_to_clean */ | |
f56799ea | 405 | for (i = 0; i < adapter->num_rx_queues; i++) { |
72d64a43 | 406 | struct e1000_rx_ring *ring = &adapter->rx_ring[i]; |
a292ca6e JK |
407 | adapter->alloc_rx_buf(adapter, ring, |
408 | E1000_DESC_UNUSED(ring)); | |
f56799ea | 409 | } |
e0aac5a2 AK |
410 | } |
411 | ||
412 | int e1000_up(struct e1000_adapter *adapter) | |
413 | { | |
1dc32918 JP |
414 | struct e1000_hw *hw = &adapter->hw; |
415 | ||
e0aac5a2 AK |
416 | /* hardware has been reset, we need to reload some things */ |
417 | e1000_configure(adapter); | |
418 | ||
419 | clear_bit(__E1000_DOWN, &adapter->flags); | |
7bfa4816 | 420 | |
bea3348e | 421 | napi_enable(&adapter->napi); |
c3570acb | 422 | |
5de55624 MC |
423 | e1000_irq_enable(adapter); |
424 | ||
4cb9be7a JB |
425 | netif_wake_queue(adapter->netdev); |
426 | ||
79f3d399 | 427 | /* fire a link change interrupt to start the watchdog */ |
1dc32918 | 428 | ew32(ICS, E1000_ICS_LSC); |
1da177e4 LT |
429 | return 0; |
430 | } | |
431 | ||
79f05bf0 AK |
432 | /** |
433 | * e1000_power_up_phy - restore link in case the phy was powered down | |
434 | * @adapter: address of board private structure | |
435 | * | |
436 | * The phy may be powered down to save power and turn off link when the | |
437 | * driver is unloaded and wake on lan is not enabled (among others) | |
438 | * *** this routine MUST be followed by a call to e1000_reset *** | |
439 | * | |
440 | **/ | |
441 | ||
d658266e | 442 | void e1000_power_up_phy(struct e1000_adapter *adapter) |
79f05bf0 | 443 | { |
1dc32918 | 444 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 445 | u16 mii_reg = 0; |
79f05bf0 AK |
446 | |
447 | /* Just clear the power down bit to wake the phy back up */ | |
1dc32918 | 448 | if (hw->media_type == e1000_media_type_copper) { |
79f05bf0 AK |
449 | /* according to the manual, the phy will retain its |
450 | * settings across a power-down/up cycle */ | |
1dc32918 | 451 | e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); |
79f05bf0 | 452 | mii_reg &= ~MII_CR_POWER_DOWN; |
1dc32918 | 453 | e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); |
79f05bf0 AK |
454 | } |
455 | } | |
456 | ||
457 | static void e1000_power_down_phy(struct e1000_adapter *adapter) | |
458 | { | |
1dc32918 JP |
459 | struct e1000_hw *hw = &adapter->hw; |
460 | ||
61c2505f | 461 | /* Power down the PHY so no link is implied when interface is down * |
c3033b01 | 462 | * The PHY cannot be powered down if any of the following is true * |
79f05bf0 AK |
463 | * (a) WoL is enabled |
464 | * (b) AMT is active | |
465 | * (c) SoL/IDER session is active */ | |
1dc32918 JP |
466 | if (!adapter->wol && hw->mac_type >= e1000_82540 && |
467 | hw->media_type == e1000_media_type_copper) { | |
406874a7 | 468 | u16 mii_reg = 0; |
61c2505f | 469 | |
1dc32918 | 470 | switch (hw->mac_type) { |
61c2505f BA |
471 | case e1000_82540: |
472 | case e1000_82545: | |
473 | case e1000_82545_rev_3: | |
474 | case e1000_82546: | |
5377a416 | 475 | case e1000_ce4100: |
61c2505f BA |
476 | case e1000_82546_rev_3: |
477 | case e1000_82541: | |
478 | case e1000_82541_rev_2: | |
479 | case e1000_82547: | |
480 | case e1000_82547_rev_2: | |
1dc32918 | 481 | if (er32(MANC) & E1000_MANC_SMBUS_EN) |
61c2505f BA |
482 | goto out; |
483 | break; | |
61c2505f BA |
484 | default: |
485 | goto out; | |
486 | } | |
1dc32918 | 487 | e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); |
79f05bf0 | 488 | mii_reg |= MII_CR_POWER_DOWN; |
1dc32918 | 489 | e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); |
79f05bf0 AK |
490 | mdelay(1); |
491 | } | |
61c2505f BA |
492 | out: |
493 | return; | |
79f05bf0 AK |
494 | } |
495 | ||
64798845 | 496 | void e1000_down(struct e1000_adapter *adapter) |
1da177e4 | 497 | { |
a6c42322 | 498 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 499 | struct net_device *netdev = adapter->netdev; |
a6c42322 | 500 | u32 rctl, tctl; |
1da177e4 | 501 | |
1314bbf3 | 502 | |
a6c42322 JB |
503 | /* disable receives in the hardware */ |
504 | rctl = er32(RCTL); | |
505 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
506 | /* flush and sleep below */ | |
507 | ||
51851073 | 508 | netif_tx_disable(netdev); |
a6c42322 JB |
509 | |
510 | /* disable transmits in the hardware */ | |
511 | tctl = er32(TCTL); | |
512 | tctl &= ~E1000_TCTL_EN; | |
513 | ew32(TCTL, tctl); | |
514 | /* flush both disables and wait for them to finish */ | |
515 | E1000_WRITE_FLUSH(); | |
516 | msleep(10); | |
517 | ||
bea3348e | 518 | napi_disable(&adapter->napi); |
c3570acb | 519 | |
1da177e4 | 520 | e1000_irq_disable(adapter); |
c1605eb3 | 521 | |
ab08853f AC |
522 | /* |
523 | * Setting DOWN must be after irq_disable to prevent | |
524 | * a screaming interrupt. Setting DOWN also prevents | |
525 | * timers and tasks from rescheduling. | |
526 | */ | |
527 | set_bit(__E1000_DOWN, &adapter->flags); | |
528 | ||
1da177e4 LT |
529 | del_timer_sync(&adapter->tx_fifo_stall_timer); |
530 | del_timer_sync(&adapter->watchdog_timer); | |
531 | del_timer_sync(&adapter->phy_info_timer); | |
532 | ||
1da177e4 LT |
533 | adapter->link_speed = 0; |
534 | adapter->link_duplex = 0; | |
535 | netif_carrier_off(netdev); | |
1da177e4 LT |
536 | |
537 | e1000_reset(adapter); | |
581d708e MC |
538 | e1000_clean_all_tx_rings(adapter); |
539 | e1000_clean_all_rx_rings(adapter); | |
1da177e4 | 540 | } |
1da177e4 | 541 | |
38df7a39 | 542 | static void e1000_reinit_safe(struct e1000_adapter *adapter) |
338c15e4 JB |
543 | { |
544 | while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) | |
545 | msleep(1); | |
546 | rtnl_lock(); | |
547 | e1000_down(adapter); | |
548 | e1000_up(adapter); | |
549 | rtnl_unlock(); | |
550 | clear_bit(__E1000_RESETTING, &adapter->flags); | |
551 | } | |
552 | ||
64798845 | 553 | void e1000_reinit_locked(struct e1000_adapter *adapter) |
2db10a08 | 554 | { |
338c15e4 JB |
555 | /* if rtnl_lock is not held the call path is bogus */ |
556 | ASSERT_RTNL(); | |
2db10a08 AK |
557 | WARN_ON(in_interrupt()); |
558 | while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) | |
559 | msleep(1); | |
560 | e1000_down(adapter); | |
561 | e1000_up(adapter); | |
562 | clear_bit(__E1000_RESETTING, &adapter->flags); | |
1da177e4 LT |
563 | } |
564 | ||
64798845 | 565 | void e1000_reset(struct e1000_adapter *adapter) |
1da177e4 | 566 | { |
1dc32918 | 567 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 568 | u32 pba = 0, tx_space, min_tx_space, min_rx_space; |
c3033b01 | 569 | bool legacy_pba_adjust = false; |
b7cb8c2c | 570 | u16 hwm; |
1da177e4 LT |
571 | |
572 | /* Repartition Pba for greater than 9k mtu | |
573 | * To take effect CTRL.RST is required. | |
574 | */ | |
575 | ||
1dc32918 | 576 | switch (hw->mac_type) { |
018ea44e BA |
577 | case e1000_82542_rev2_0: |
578 | case e1000_82542_rev2_1: | |
579 | case e1000_82543: | |
580 | case e1000_82544: | |
581 | case e1000_82540: | |
582 | case e1000_82541: | |
583 | case e1000_82541_rev_2: | |
c3033b01 | 584 | legacy_pba_adjust = true; |
018ea44e BA |
585 | pba = E1000_PBA_48K; |
586 | break; | |
587 | case e1000_82545: | |
588 | case e1000_82545_rev_3: | |
589 | case e1000_82546: | |
5377a416 | 590 | case e1000_ce4100: |
018ea44e BA |
591 | case e1000_82546_rev_3: |
592 | pba = E1000_PBA_48K; | |
593 | break; | |
2d7edb92 | 594 | case e1000_82547: |
0e6ef3e0 | 595 | case e1000_82547_rev_2: |
c3033b01 | 596 | legacy_pba_adjust = true; |
2d7edb92 MC |
597 | pba = E1000_PBA_30K; |
598 | break; | |
018ea44e BA |
599 | case e1000_undefined: |
600 | case e1000_num_macs: | |
2d7edb92 MC |
601 | break; |
602 | } | |
603 | ||
c3033b01 | 604 | if (legacy_pba_adjust) { |
b7cb8c2c | 605 | if (hw->max_frame_size > E1000_RXBUFFER_8192) |
018ea44e | 606 | pba -= 8; /* allocate more FIFO for Tx */ |
2d7edb92 | 607 | |
1dc32918 | 608 | if (hw->mac_type == e1000_82547) { |
018ea44e BA |
609 | adapter->tx_fifo_head = 0; |
610 | adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; | |
611 | adapter->tx_fifo_size = | |
612 | (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; | |
613 | atomic_set(&adapter->tx_fifo_stall, 0); | |
614 | } | |
b7cb8c2c | 615 | } else if (hw->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) { |
018ea44e | 616 | /* adjust PBA for jumbo frames */ |
1dc32918 | 617 | ew32(PBA, pba); |
018ea44e BA |
618 | |
619 | /* To maintain wire speed transmits, the Tx FIFO should be | |
b7cb8c2c | 620 | * large enough to accommodate two full transmit packets, |
018ea44e | 621 | * rounded up to the next 1KB and expressed in KB. Likewise, |
b7cb8c2c | 622 | * the Rx FIFO should be large enough to accommodate at least |
018ea44e BA |
623 | * one full receive packet and is similarly rounded up and |
624 | * expressed in KB. */ | |
1dc32918 | 625 | pba = er32(PBA); |
018ea44e BA |
626 | /* upper 16 bits has Tx packet buffer allocation size in KB */ |
627 | tx_space = pba >> 16; | |
628 | /* lower 16 bits has Rx packet buffer allocation size in KB */ | |
629 | pba &= 0xffff; | |
b7cb8c2c JB |
630 | /* |
631 | * the tx fifo also stores 16 bytes of information about the tx | |
632 | * but don't include ethernet FCS because hardware appends it | |
633 | */ | |
634 | min_tx_space = (hw->max_frame_size + | |
635 | sizeof(struct e1000_tx_desc) - | |
636 | ETH_FCS_LEN) * 2; | |
9099cfb9 | 637 | min_tx_space = ALIGN(min_tx_space, 1024); |
018ea44e | 638 | min_tx_space >>= 10; |
b7cb8c2c JB |
639 | /* software strips receive CRC, so leave room for it */ |
640 | min_rx_space = hw->max_frame_size; | |
9099cfb9 | 641 | min_rx_space = ALIGN(min_rx_space, 1024); |
018ea44e BA |
642 | min_rx_space >>= 10; |
643 | ||
644 | /* If current Tx allocation is less than the min Tx FIFO size, | |
645 | * and the min Tx FIFO size is less than the current Rx FIFO | |
646 | * allocation, take space away from current Rx allocation */ | |
647 | if (tx_space < min_tx_space && | |
648 | ((min_tx_space - tx_space) < pba)) { | |
649 | pba = pba - (min_tx_space - tx_space); | |
650 | ||
651 | /* PCI/PCIx hardware has PBA alignment constraints */ | |
1dc32918 | 652 | switch (hw->mac_type) { |
018ea44e BA |
653 | case e1000_82545 ... e1000_82546_rev_3: |
654 | pba &= ~(E1000_PBA_8K - 1); | |
655 | break; | |
656 | default: | |
657 | break; | |
658 | } | |
659 | ||
660 | /* if short on rx space, rx wins and must trump tx | |
661 | * adjustment or use Early Receive if available */ | |
1532ecea JB |
662 | if (pba < min_rx_space) |
663 | pba = min_rx_space; | |
018ea44e | 664 | } |
1da177e4 | 665 | } |
2d7edb92 | 666 | |
1dc32918 | 667 | ew32(PBA, pba); |
1da177e4 | 668 | |
b7cb8c2c JB |
669 | /* |
670 | * flow control settings: | |
671 | * The high water mark must be low enough to fit one full frame | |
672 | * (or the size used for early receive) above it in the Rx FIFO. | |
673 | * Set it to the lower of: | |
674 | * - 90% of the Rx FIFO size, and | |
675 | * - the full Rx FIFO size minus the early receive size (for parts | |
676 | * with ERT support assuming ERT set to E1000_ERT_2048), or | |
677 | * - the full Rx FIFO size minus one full frame | |
678 | */ | |
679 | hwm = min(((pba << 10) * 9 / 10), | |
680 | ((pba << 10) - hw->max_frame_size)); | |
681 | ||
682 | hw->fc_high_water = hwm & 0xFFF8; /* 8-byte granularity */ | |
683 | hw->fc_low_water = hw->fc_high_water - 8; | |
edbbb3ca | 684 | hw->fc_pause_time = E1000_FC_PAUSE_TIME; |
1dc32918 JP |
685 | hw->fc_send_xon = 1; |
686 | hw->fc = hw->original_fc; | |
1da177e4 | 687 | |
2d7edb92 | 688 | /* Allow time for pending master requests to run */ |
1dc32918 JP |
689 | e1000_reset_hw(hw); |
690 | if (hw->mac_type >= e1000_82544) | |
691 | ew32(WUC, 0); | |
09ae3e88 | 692 | |
1dc32918 | 693 | if (e1000_init_hw(hw)) |
feb8f478 | 694 | e_dev_err("Hardware Error\n"); |
2d7edb92 | 695 | e1000_update_mng_vlan(adapter); |
3d5460a0 JB |
696 | |
697 | /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */ | |
1dc32918 | 698 | if (hw->mac_type >= e1000_82544 && |
1dc32918 JP |
699 | hw->autoneg == 1 && |
700 | hw->autoneg_advertised == ADVERTISE_1000_FULL) { | |
701 | u32 ctrl = er32(CTRL); | |
3d5460a0 JB |
702 | /* clear phy power management bit if we are in gig only mode, |
703 | * which if enabled will attempt negotiation to 100Mb, which | |
704 | * can cause a loss of link at power off or driver unload */ | |
705 | ctrl &= ~E1000_CTRL_SWDPIN3; | |
1dc32918 | 706 | ew32(CTRL, ctrl); |
3d5460a0 JB |
707 | } |
708 | ||
1da177e4 | 709 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
1dc32918 | 710 | ew32(VET, ETHERNET_IEEE_VLAN_TYPE); |
1da177e4 | 711 | |
1dc32918 JP |
712 | e1000_reset_adaptive(hw); |
713 | e1000_phy_get_info(hw, &adapter->phy_info); | |
9a53a202 | 714 | |
0fccd0e9 | 715 | e1000_release_manageability(adapter); |
1da177e4 LT |
716 | } |
717 | ||
67b3c27c AK |
718 | /** |
719 | * Dump the eeprom for users having checksum issues | |
720 | **/ | |
b4ea895d | 721 | static void e1000_dump_eeprom(struct e1000_adapter *adapter) |
67b3c27c AK |
722 | { |
723 | struct net_device *netdev = adapter->netdev; | |
724 | struct ethtool_eeprom eeprom; | |
725 | const struct ethtool_ops *ops = netdev->ethtool_ops; | |
726 | u8 *data; | |
727 | int i; | |
728 | u16 csum_old, csum_new = 0; | |
729 | ||
730 | eeprom.len = ops->get_eeprom_len(netdev); | |
731 | eeprom.offset = 0; | |
732 | ||
733 | data = kmalloc(eeprom.len, GFP_KERNEL); | |
734 | if (!data) { | |
675ad473 | 735 | pr_err("Unable to allocate memory to dump EEPROM data\n"); |
67b3c27c AK |
736 | return; |
737 | } | |
738 | ||
739 | ops->get_eeprom(netdev, &eeprom, data); | |
740 | ||
741 | csum_old = (data[EEPROM_CHECKSUM_REG * 2]) + | |
742 | (data[EEPROM_CHECKSUM_REG * 2 + 1] << 8); | |
743 | for (i = 0; i < EEPROM_CHECKSUM_REG * 2; i += 2) | |
744 | csum_new += data[i] + (data[i + 1] << 8); | |
745 | csum_new = EEPROM_SUM - csum_new; | |
746 | ||
675ad473 ET |
747 | pr_err("/*********************/\n"); |
748 | pr_err("Current EEPROM Checksum : 0x%04x\n", csum_old); | |
749 | pr_err("Calculated : 0x%04x\n", csum_new); | |
67b3c27c | 750 | |
675ad473 ET |
751 | pr_err("Offset Values\n"); |
752 | pr_err("======== ======\n"); | |
67b3c27c AK |
753 | print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, data, 128, 0); |
754 | ||
675ad473 ET |
755 | pr_err("Include this output when contacting your support provider.\n"); |
756 | pr_err("This is not a software error! Something bad happened to\n"); | |
757 | pr_err("your hardware or EEPROM image. Ignoring this problem could\n"); | |
758 | pr_err("result in further problems, possibly loss of data,\n"); | |
759 | pr_err("corruption or system hangs!\n"); | |
760 | pr_err("The MAC Address will be reset to 00:00:00:00:00:00,\n"); | |
761 | pr_err("which is invalid and requires you to set the proper MAC\n"); | |
762 | pr_err("address manually before continuing to enable this network\n"); | |
763 | pr_err("device. Please inspect the EEPROM dump and report the\n"); | |
764 | pr_err("issue to your hardware vendor or Intel Customer Support.\n"); | |
765 | pr_err("/*********************/\n"); | |
67b3c27c AK |
766 | |
767 | kfree(data); | |
768 | } | |
769 | ||
81250297 TI |
770 | /** |
771 | * e1000_is_need_ioport - determine if an adapter needs ioport resources or not | |
772 | * @pdev: PCI device information struct | |
773 | * | |
774 | * Return true if an adapter needs ioport resources | |
775 | **/ | |
776 | static int e1000_is_need_ioport(struct pci_dev *pdev) | |
777 | { | |
778 | switch (pdev->device) { | |
779 | case E1000_DEV_ID_82540EM: | |
780 | case E1000_DEV_ID_82540EM_LOM: | |
781 | case E1000_DEV_ID_82540EP: | |
782 | case E1000_DEV_ID_82540EP_LOM: | |
783 | case E1000_DEV_ID_82540EP_LP: | |
784 | case E1000_DEV_ID_82541EI: | |
785 | case E1000_DEV_ID_82541EI_MOBILE: | |
786 | case E1000_DEV_ID_82541ER: | |
787 | case E1000_DEV_ID_82541ER_LOM: | |
788 | case E1000_DEV_ID_82541GI: | |
789 | case E1000_DEV_ID_82541GI_LF: | |
790 | case E1000_DEV_ID_82541GI_MOBILE: | |
791 | case E1000_DEV_ID_82544EI_COPPER: | |
792 | case E1000_DEV_ID_82544EI_FIBER: | |
793 | case E1000_DEV_ID_82544GC_COPPER: | |
794 | case E1000_DEV_ID_82544GC_LOM: | |
795 | case E1000_DEV_ID_82545EM_COPPER: | |
796 | case E1000_DEV_ID_82545EM_FIBER: | |
797 | case E1000_DEV_ID_82546EB_COPPER: | |
798 | case E1000_DEV_ID_82546EB_FIBER: | |
799 | case E1000_DEV_ID_82546EB_QUAD_COPPER: | |
800 | return true; | |
801 | default: | |
802 | return false; | |
803 | } | |
804 | } | |
805 | ||
5622e404 JP |
806 | static u32 e1000_fix_features(struct net_device *netdev, u32 features) |
807 | { | |
808 | /* | |
809 | * Since there is no support for separate rx/tx vlan accel | |
810 | * enable/disable make sure tx flag is always in same state as rx. | |
811 | */ | |
812 | if (features & NETIF_F_HW_VLAN_RX) | |
813 | features |= NETIF_F_HW_VLAN_TX; | |
814 | else | |
815 | features &= ~NETIF_F_HW_VLAN_TX; | |
816 | ||
817 | return features; | |
818 | } | |
819 | ||
e97d3207 MM |
820 | static int e1000_set_features(struct net_device *netdev, u32 features) |
821 | { | |
822 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
823 | u32 changed = features ^ netdev->features; | |
824 | ||
5622e404 JP |
825 | if (changed & NETIF_F_HW_VLAN_RX) |
826 | e1000_vlan_mode(netdev, features); | |
827 | ||
e97d3207 MM |
828 | if (!(changed & NETIF_F_RXCSUM)) |
829 | return 0; | |
830 | ||
831 | adapter->rx_csum = !!(features & NETIF_F_RXCSUM); | |
832 | ||
833 | if (netif_running(netdev)) | |
834 | e1000_reinit_locked(adapter); | |
835 | else | |
836 | e1000_reset(adapter); | |
837 | ||
838 | return 0; | |
839 | } | |
840 | ||
0e7614bc SH |
841 | static const struct net_device_ops e1000_netdev_ops = { |
842 | .ndo_open = e1000_open, | |
843 | .ndo_stop = e1000_close, | |
00829823 | 844 | .ndo_start_xmit = e1000_xmit_frame, |
0e7614bc SH |
845 | .ndo_get_stats = e1000_get_stats, |
846 | .ndo_set_rx_mode = e1000_set_rx_mode, | |
847 | .ndo_set_mac_address = e1000_set_mac, | |
5622e404 | 848 | .ndo_tx_timeout = e1000_tx_timeout, |
0e7614bc SH |
849 | .ndo_change_mtu = e1000_change_mtu, |
850 | .ndo_do_ioctl = e1000_ioctl, | |
851 | .ndo_validate_addr = eth_validate_addr, | |
0e7614bc SH |
852 | .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, |
853 | .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, | |
854 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
855 | .ndo_poll_controller = e1000_netpoll, | |
856 | #endif | |
5622e404 JP |
857 | .ndo_fix_features = e1000_fix_features, |
858 | .ndo_set_features = e1000_set_features, | |
0e7614bc SH |
859 | }; |
860 | ||
e508be17 JB |
861 | /** |
862 | * e1000_init_hw_struct - initialize members of hw struct | |
863 | * @adapter: board private struct | |
864 | * @hw: structure used by e1000_hw.c | |
865 | * | |
866 | * Factors out initialization of the e1000_hw struct to its own function | |
867 | * that can be called very early at init (just after struct allocation). | |
868 | * Fields are initialized based on PCI device information and | |
869 | * OS network device settings (MTU size). | |
870 | * Returns negative error codes if MAC type setup fails. | |
871 | */ | |
872 | static int e1000_init_hw_struct(struct e1000_adapter *adapter, | |
873 | struct e1000_hw *hw) | |
874 | { | |
875 | struct pci_dev *pdev = adapter->pdev; | |
876 | ||
877 | /* PCI config space info */ | |
878 | hw->vendor_id = pdev->vendor; | |
879 | hw->device_id = pdev->device; | |
880 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
881 | hw->subsystem_id = pdev->subsystem_device; | |
882 | hw->revision_id = pdev->revision; | |
883 | ||
884 | pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); | |
885 | ||
886 | hw->max_frame_size = adapter->netdev->mtu + | |
887 | ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; | |
888 | hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; | |
889 | ||
890 | /* identify the MAC */ | |
891 | if (e1000_set_mac_type(hw)) { | |
892 | e_err(probe, "Unknown MAC Type\n"); | |
893 | return -EIO; | |
894 | } | |
895 | ||
896 | switch (hw->mac_type) { | |
897 | default: | |
898 | break; | |
899 | case e1000_82541: | |
900 | case e1000_82547: | |
901 | case e1000_82541_rev_2: | |
902 | case e1000_82547_rev_2: | |
903 | hw->phy_init_script = 1; | |
904 | break; | |
905 | } | |
906 | ||
907 | e1000_set_media_type(hw); | |
908 | e1000_get_bus_info(hw); | |
909 | ||
910 | hw->wait_autoneg_complete = false; | |
911 | hw->tbi_compatibility_en = true; | |
912 | hw->adaptive_ifs = true; | |
913 | ||
914 | /* Copper options */ | |
915 | ||
916 | if (hw->media_type == e1000_media_type_copper) { | |
917 | hw->mdix = AUTO_ALL_MODES; | |
918 | hw->disable_polarity_correction = false; | |
919 | hw->master_slave = E1000_MASTER_SLAVE; | |
920 | } | |
921 | ||
922 | return 0; | |
923 | } | |
924 | ||
1da177e4 LT |
925 | /** |
926 | * e1000_probe - Device Initialization Routine | |
927 | * @pdev: PCI device information struct | |
928 | * @ent: entry in e1000_pci_tbl | |
929 | * | |
930 | * Returns 0 on success, negative on failure | |
931 | * | |
932 | * e1000_probe initializes an adapter identified by a pci_dev structure. | |
933 | * The OS initialization, configuring of the adapter private structure, | |
934 | * and a hardware reset occur. | |
935 | **/ | |
1dc32918 JP |
936 | static int __devinit e1000_probe(struct pci_dev *pdev, |
937 | const struct pci_device_id *ent) | |
1da177e4 LT |
938 | { |
939 | struct net_device *netdev; | |
940 | struct e1000_adapter *adapter; | |
1dc32918 | 941 | struct e1000_hw *hw; |
2d7edb92 | 942 | |
1da177e4 | 943 | static int cards_found = 0; |
120cd576 | 944 | static int global_quad_port_a = 0; /* global ksp3 port a indication */ |
2d7edb92 | 945 | int i, err, pci_using_dac; |
406874a7 | 946 | u16 eeprom_data = 0; |
5377a416 | 947 | u16 tmp = 0; |
406874a7 | 948 | u16 eeprom_apme_mask = E1000_EEPROM_APME; |
81250297 | 949 | int bars, need_ioport; |
0795af57 | 950 | |
81250297 TI |
951 | /* do not allocate ioport bars when not needed */ |
952 | need_ioport = e1000_is_need_ioport(pdev); | |
953 | if (need_ioport) { | |
954 | bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO); | |
955 | err = pci_enable_device(pdev); | |
956 | } else { | |
957 | bars = pci_select_bars(pdev, IORESOURCE_MEM); | |
4d7155b9 | 958 | err = pci_enable_device_mem(pdev); |
81250297 | 959 | } |
c7be73bc | 960 | if (err) |
1da177e4 LT |
961 | return err; |
962 | ||
81250297 | 963 | err = pci_request_selected_regions(pdev, bars, e1000_driver_name); |
c7be73bc | 964 | if (err) |
6dd62ab0 | 965 | goto err_pci_reg; |
1da177e4 LT |
966 | |
967 | pci_set_master(pdev); | |
dbb5aaeb NN |
968 | err = pci_save_state(pdev); |
969 | if (err) | |
970 | goto err_alloc_etherdev; | |
1da177e4 | 971 | |
6dd62ab0 | 972 | err = -ENOMEM; |
1da177e4 | 973 | netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
6dd62ab0 | 974 | if (!netdev) |
1da177e4 | 975 | goto err_alloc_etherdev; |
1da177e4 | 976 | |
1da177e4 LT |
977 | SET_NETDEV_DEV(netdev, &pdev->dev); |
978 | ||
979 | pci_set_drvdata(pdev, netdev); | |
60490fe0 | 980 | adapter = netdev_priv(netdev); |
1da177e4 LT |
981 | adapter->netdev = netdev; |
982 | adapter->pdev = pdev; | |
1da177e4 | 983 | adapter->msg_enable = (1 << debug) - 1; |
81250297 TI |
984 | adapter->bars = bars; |
985 | adapter->need_ioport = need_ioport; | |
1da177e4 | 986 | |
1dc32918 JP |
987 | hw = &adapter->hw; |
988 | hw->back = adapter; | |
989 | ||
6dd62ab0 | 990 | err = -EIO; |
275f165f | 991 | hw->hw_addr = pci_ioremap_bar(pdev, BAR_0); |
1dc32918 | 992 | if (!hw->hw_addr) |
1da177e4 | 993 | goto err_ioremap; |
1da177e4 | 994 | |
81250297 TI |
995 | if (adapter->need_ioport) { |
996 | for (i = BAR_1; i <= BAR_5; i++) { | |
997 | if (pci_resource_len(pdev, i) == 0) | |
998 | continue; | |
999 | if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { | |
1000 | hw->io_base = pci_resource_start(pdev, i); | |
1001 | break; | |
1002 | } | |
1da177e4 LT |
1003 | } |
1004 | } | |
1005 | ||
e508be17 JB |
1006 | /* make ready for any if (hw->...) below */ |
1007 | err = e1000_init_hw_struct(adapter, hw); | |
1008 | if (err) | |
1009 | goto err_sw_init; | |
1010 | ||
1011 | /* | |
1012 | * there is a workaround being applied below that limits | |
1013 | * 64-bit DMA addresses to 64-bit hardware. There are some | |
1014 | * 32-bit adapters that Tx hang when given 64-bit DMA addresses | |
1015 | */ | |
1016 | pci_using_dac = 0; | |
1017 | if ((hw->bus_type == e1000_bus_type_pcix) && | |
1018 | !dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) { | |
1019 | /* | |
1020 | * according to DMA-API-HOWTO, coherent calls will always | |
1021 | * succeed if the set call did | |
1022 | */ | |
1023 | dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); | |
1024 | pci_using_dac = 1; | |
e508be17 | 1025 | } else { |
19a0b67a DN |
1026 | err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); |
1027 | if (err) { | |
1028 | pr_err("No usable DMA config, aborting\n"); | |
1029 | goto err_dma; | |
1030 | } | |
1031 | dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); | |
e508be17 JB |
1032 | } |
1033 | ||
0e7614bc | 1034 | netdev->netdev_ops = &e1000_netdev_ops; |
1da177e4 | 1035 | e1000_set_ethtool_ops(netdev); |
1da177e4 | 1036 | netdev->watchdog_timeo = 5 * HZ; |
bea3348e | 1037 | netif_napi_add(netdev, &adapter->napi, e1000_clean, 64); |
0e7614bc | 1038 | |
0eb5a34c | 1039 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
1da177e4 | 1040 | |
1da177e4 LT |
1041 | adapter->bd_number = cards_found; |
1042 | ||
1043 | /* setup the private structure */ | |
1044 | ||
c7be73bc JP |
1045 | err = e1000_sw_init(adapter); |
1046 | if (err) | |
1da177e4 LT |
1047 | goto err_sw_init; |
1048 | ||
6dd62ab0 | 1049 | err = -EIO; |
5377a416 DB |
1050 | if (hw->mac_type == e1000_ce4100) { |
1051 | ce4100_gbe_mdio_base_phy = pci_resource_start(pdev, BAR_1); | |
1052 | ce4100_gbe_mdio_base_virt = ioremap(ce4100_gbe_mdio_base_phy, | |
1053 | pci_resource_len(pdev, BAR_1)); | |
1054 | ||
1055 | if (!ce4100_gbe_mdio_base_virt) | |
1056 | goto err_mdio_ioremap; | |
1057 | } | |
2d7edb92 | 1058 | |
1dc32918 | 1059 | if (hw->mac_type >= e1000_82543) { |
e97d3207 | 1060 | netdev->hw_features = NETIF_F_SG | |
5622e404 JP |
1061 | NETIF_F_HW_CSUM | |
1062 | NETIF_F_HW_VLAN_RX; | |
e97d3207 | 1063 | netdev->features = NETIF_F_HW_VLAN_TX | |
1da177e4 LT |
1064 | NETIF_F_HW_VLAN_FILTER; |
1065 | } | |
1066 | ||
1dc32918 JP |
1067 | if ((hw->mac_type >= e1000_82544) && |
1068 | (hw->mac_type != e1000_82547)) | |
e97d3207 MM |
1069 | netdev->hw_features |= NETIF_F_TSO; |
1070 | ||
1071 | netdev->features |= netdev->hw_features; | |
1072 | netdev->hw_features |= NETIF_F_RXCSUM; | |
2d7edb92 | 1073 | |
7b872a55 | 1074 | if (pci_using_dac) { |
1da177e4 | 1075 | netdev->features |= NETIF_F_HIGHDMA; |
7b872a55 YZ |
1076 | netdev->vlan_features |= NETIF_F_HIGHDMA; |
1077 | } | |
1da177e4 | 1078 | |
20501a69 | 1079 | netdev->vlan_features |= NETIF_F_TSO; |
20501a69 PM |
1080 | netdev->vlan_features |= NETIF_F_HW_CSUM; |
1081 | netdev->vlan_features |= NETIF_F_SG; | |
1082 | ||
01789349 JP |
1083 | netdev->priv_flags |= IFF_UNICAST_FLT; |
1084 | ||
1dc32918 | 1085 | adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw); |
2d7edb92 | 1086 | |
cd94dd0b | 1087 | /* initialize eeprom parameters */ |
1dc32918 | 1088 | if (e1000_init_eeprom_params(hw)) { |
feb8f478 | 1089 | e_err(probe, "EEPROM initialization failed\n"); |
6dd62ab0 | 1090 | goto err_eeprom; |
cd94dd0b AK |
1091 | } |
1092 | ||
96838a40 | 1093 | /* before reading the EEPROM, reset the controller to |
1da177e4 | 1094 | * put the device in a known good starting state */ |
96838a40 | 1095 | |
1dc32918 | 1096 | e1000_reset_hw(hw); |
1da177e4 LT |
1097 | |
1098 | /* make sure the EEPROM is good */ | |
1dc32918 | 1099 | if (e1000_validate_eeprom_checksum(hw) < 0) { |
feb8f478 | 1100 | e_err(probe, "The EEPROM Checksum Is Not Valid\n"); |
67b3c27c AK |
1101 | e1000_dump_eeprom(adapter); |
1102 | /* | |
1103 | * set MAC address to all zeroes to invalidate and temporary | |
1104 | * disable this device for the user. This blocks regular | |
1105 | * traffic while still permitting ethtool ioctls from reaching | |
1106 | * the hardware as well as allowing the user to run the | |
1107 | * interface after manually setting a hw addr using | |
1108 | * `ip set address` | |
1109 | */ | |
1dc32918 | 1110 | memset(hw->mac_addr, 0, netdev->addr_len); |
67b3c27c AK |
1111 | } else { |
1112 | /* copy the MAC address out of the EEPROM */ | |
1dc32918 | 1113 | if (e1000_read_mac_addr(hw)) |
feb8f478 | 1114 | e_err(probe, "EEPROM Read Error\n"); |
1da177e4 | 1115 | } |
67b3c27c | 1116 | /* don't block initalization here due to bad MAC address */ |
1dc32918 JP |
1117 | memcpy(netdev->dev_addr, hw->mac_addr, netdev->addr_len); |
1118 | memcpy(netdev->perm_addr, hw->mac_addr, netdev->addr_len); | |
1da177e4 | 1119 | |
67b3c27c | 1120 | if (!is_valid_ether_addr(netdev->perm_addr)) |
feb8f478 | 1121 | e_err(probe, "Invalid MAC Address\n"); |
1da177e4 | 1122 | |
1da177e4 | 1123 | init_timer(&adapter->tx_fifo_stall_timer); |
c061b18d | 1124 | adapter->tx_fifo_stall_timer.function = e1000_82547_tx_fifo_stall; |
e982f17c | 1125 | adapter->tx_fifo_stall_timer.data = (unsigned long)adapter; |
1da177e4 LT |
1126 | |
1127 | init_timer(&adapter->watchdog_timer); | |
c061b18d | 1128 | adapter->watchdog_timer.function = e1000_watchdog; |
1da177e4 LT |
1129 | adapter->watchdog_timer.data = (unsigned long) adapter; |
1130 | ||
1da177e4 | 1131 | init_timer(&adapter->phy_info_timer); |
c061b18d | 1132 | adapter->phy_info_timer.function = e1000_update_phy_info; |
e982f17c | 1133 | adapter->phy_info_timer.data = (unsigned long)adapter; |
1da177e4 | 1134 | |
5cf42fcd | 1135 | INIT_WORK(&adapter->fifo_stall_task, e1000_82547_tx_fifo_stall_task); |
65f27f38 | 1136 | INIT_WORK(&adapter->reset_task, e1000_reset_task); |
5cf42fcd | 1137 | INIT_WORK(&adapter->phy_info_task, e1000_update_phy_info_task); |
1da177e4 | 1138 | |
1da177e4 LT |
1139 | e1000_check_options(adapter); |
1140 | ||
1141 | /* Initial Wake on LAN setting | |
1142 | * If APM wake is enabled in the EEPROM, | |
1143 | * enable the ACPI Magic Packet filter | |
1144 | */ | |
1145 | ||
1dc32918 | 1146 | switch (hw->mac_type) { |
1da177e4 LT |
1147 | case e1000_82542_rev2_0: |
1148 | case e1000_82542_rev2_1: | |
1149 | case e1000_82543: | |
1150 | break; | |
1151 | case e1000_82544: | |
1dc32918 | 1152 | e1000_read_eeprom(hw, |
1da177e4 LT |
1153 | EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); |
1154 | eeprom_apme_mask = E1000_EEPROM_82544_APM; | |
1155 | break; | |
1156 | case e1000_82546: | |
1157 | case e1000_82546_rev_3: | |
1dc32918 JP |
1158 | if (er32(STATUS) & E1000_STATUS_FUNC_1){ |
1159 | e1000_read_eeprom(hw, | |
1da177e4 LT |
1160 | EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); |
1161 | break; | |
1162 | } | |
1163 | /* Fall Through */ | |
1164 | default: | |
1dc32918 | 1165 | e1000_read_eeprom(hw, |
1da177e4 LT |
1166 | EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); |
1167 | break; | |
1168 | } | |
96838a40 | 1169 | if (eeprom_data & eeprom_apme_mask) |
120cd576 JB |
1170 | adapter->eeprom_wol |= E1000_WUFC_MAG; |
1171 | ||
1172 | /* now that we have the eeprom settings, apply the special cases | |
1173 | * where the eeprom may be wrong or the board simply won't support | |
1174 | * wake on lan on a particular port */ | |
1175 | switch (pdev->device) { | |
1176 | case E1000_DEV_ID_82546GB_PCIE: | |
1177 | adapter->eeprom_wol = 0; | |
1178 | break; | |
1179 | case E1000_DEV_ID_82546EB_FIBER: | |
1180 | case E1000_DEV_ID_82546GB_FIBER: | |
120cd576 JB |
1181 | /* Wake events only supported on port A for dual fiber |
1182 | * regardless of eeprom setting */ | |
1dc32918 | 1183 | if (er32(STATUS) & E1000_STATUS_FUNC_1) |
120cd576 JB |
1184 | adapter->eeprom_wol = 0; |
1185 | break; | |
1186 | case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3: | |
1187 | /* if quad port adapter, disable WoL on all but port A */ | |
1188 | if (global_quad_port_a != 0) | |
1189 | adapter->eeprom_wol = 0; | |
1190 | else | |
1191 | adapter->quad_port_a = 1; | |
1192 | /* Reset for multiple quad port adapters */ | |
1193 | if (++global_quad_port_a == 4) | |
1194 | global_quad_port_a = 0; | |
1195 | break; | |
1196 | } | |
1197 | ||
1198 | /* initialize the wol settings based on the eeprom settings */ | |
1199 | adapter->wol = adapter->eeprom_wol; | |
de126489 | 1200 | device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
1da177e4 | 1201 | |
5377a416 DB |
1202 | /* Auto detect PHY address */ |
1203 | if (hw->mac_type == e1000_ce4100) { | |
1204 | for (i = 0; i < 32; i++) { | |
1205 | hw->phy_addr = i; | |
1206 | e1000_read_phy_reg(hw, PHY_ID2, &tmp); | |
1207 | if (tmp == 0 || tmp == 0xFF) { | |
1208 | if (i == 31) | |
1209 | goto err_eeprom; | |
1210 | continue; | |
1211 | } else | |
1212 | break; | |
1213 | } | |
1214 | } | |
1215 | ||
675ad473 ET |
1216 | /* reset the hardware with the new settings */ |
1217 | e1000_reset(adapter); | |
1218 | ||
1219 | strcpy(netdev->name, "eth%d"); | |
1220 | err = register_netdev(netdev); | |
1221 | if (err) | |
1222 | goto err_register; | |
1223 | ||
5622e404 JP |
1224 | e1000_vlan_mode(netdev, netdev->features); |
1225 | ||
fb3d47d4 | 1226 | /* print bus type/speed/width info */ |
feb8f478 | 1227 | e_info(probe, "(PCI%s:%dMHz:%d-bit) %pM\n", |
7837e58c JP |
1228 | ((hw->bus_type == e1000_bus_type_pcix) ? "-X" : ""), |
1229 | ((hw->bus_speed == e1000_bus_speed_133) ? 133 : | |
1230 | (hw->bus_speed == e1000_bus_speed_120) ? 120 : | |
1231 | (hw->bus_speed == e1000_bus_speed_100) ? 100 : | |
1232 | (hw->bus_speed == e1000_bus_speed_66) ? 66 : 33), | |
1233 | ((hw->bus_width == e1000_bus_width_64) ? 64 : 32), | |
1234 | netdev->dev_addr); | |
1314bbf3 | 1235 | |
eb62efd2 JB |
1236 | /* carrier off reporting is important to ethtool even BEFORE open */ |
1237 | netif_carrier_off(netdev); | |
1238 | ||
feb8f478 | 1239 | e_info(probe, "Intel(R) PRO/1000 Network Connection\n"); |
1da177e4 LT |
1240 | |
1241 | cards_found++; | |
1242 | return 0; | |
1243 | ||
1244 | err_register: | |
6dd62ab0 | 1245 | err_eeprom: |
1532ecea | 1246 | e1000_phy_hw_reset(hw); |
6dd62ab0 | 1247 | |
1dc32918 JP |
1248 | if (hw->flash_address) |
1249 | iounmap(hw->flash_address); | |
6dd62ab0 VA |
1250 | kfree(adapter->tx_ring); |
1251 | kfree(adapter->rx_ring); | |
e508be17 | 1252 | err_dma: |
1da177e4 | 1253 | err_sw_init: |
5377a416 DB |
1254 | err_mdio_ioremap: |
1255 | iounmap(ce4100_gbe_mdio_base_virt); | |
1dc32918 | 1256 | iounmap(hw->hw_addr); |
1da177e4 LT |
1257 | err_ioremap: |
1258 | free_netdev(netdev); | |
1259 | err_alloc_etherdev: | |
81250297 | 1260 | pci_release_selected_regions(pdev, bars); |
6dd62ab0 | 1261 | err_pci_reg: |
6dd62ab0 | 1262 | pci_disable_device(pdev); |
1da177e4 LT |
1263 | return err; |
1264 | } | |
1265 | ||
1266 | /** | |
1267 | * e1000_remove - Device Removal Routine | |
1268 | * @pdev: PCI device information struct | |
1269 | * | |
1270 | * e1000_remove is called by the PCI subsystem to alert the driver | |
1271 | * that it should release a PCI device. The could be caused by a | |
1272 | * Hot-Plug event, or because the driver is going to be removed from | |
1273 | * memory. | |
1274 | **/ | |
1275 | ||
64798845 | 1276 | static void __devexit e1000_remove(struct pci_dev *pdev) |
1da177e4 LT |
1277 | { |
1278 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 1279 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 1280 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 1281 | |
baa34745 JB |
1282 | set_bit(__E1000_DOWN, &adapter->flags); |
1283 | del_timer_sync(&adapter->tx_fifo_stall_timer); | |
1284 | del_timer_sync(&adapter->watchdog_timer); | |
1285 | del_timer_sync(&adapter->phy_info_timer); | |
1286 | ||
28e53bdd | 1287 | cancel_work_sync(&adapter->reset_task); |
be2b28ed | 1288 | |
0fccd0e9 | 1289 | e1000_release_manageability(adapter); |
1da177e4 | 1290 | |
bea3348e SH |
1291 | unregister_netdev(netdev); |
1292 | ||
1532ecea | 1293 | e1000_phy_hw_reset(hw); |
1da177e4 | 1294 | |
24025e4e MC |
1295 | kfree(adapter->tx_ring); |
1296 | kfree(adapter->rx_ring); | |
24025e4e | 1297 | |
1dc32918 JP |
1298 | iounmap(hw->hw_addr); |
1299 | if (hw->flash_address) | |
1300 | iounmap(hw->flash_address); | |
81250297 | 1301 | pci_release_selected_regions(pdev, adapter->bars); |
1da177e4 LT |
1302 | |
1303 | free_netdev(netdev); | |
1304 | ||
1305 | pci_disable_device(pdev); | |
1306 | } | |
1307 | ||
1308 | /** | |
1309 | * e1000_sw_init - Initialize general software structures (struct e1000_adapter) | |
1310 | * @adapter: board private structure to initialize | |
1311 | * | |
1312 | * e1000_sw_init initializes the Adapter private data structure. | |
e508be17 | 1313 | * e1000_init_hw_struct MUST be called before this function |
1da177e4 LT |
1314 | **/ |
1315 | ||
64798845 | 1316 | static int __devinit e1000_sw_init(struct e1000_adapter *adapter) |
1da177e4 | 1317 | { |
eb0f8054 | 1318 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
1da177e4 | 1319 | |
f56799ea JK |
1320 | adapter->num_tx_queues = 1; |
1321 | adapter->num_rx_queues = 1; | |
581d708e MC |
1322 | |
1323 | if (e1000_alloc_queues(adapter)) { | |
feb8f478 | 1324 | e_err(probe, "Unable to allocate memory for queues\n"); |
581d708e MC |
1325 | return -ENOMEM; |
1326 | } | |
1327 | ||
47313054 | 1328 | /* Explicitly disable IRQ since the NIC can be in any state. */ |
47313054 HX |
1329 | e1000_irq_disable(adapter); |
1330 | ||
1da177e4 | 1331 | spin_lock_init(&adapter->stats_lock); |
1da177e4 | 1332 | |
1314bbf3 AK |
1333 | set_bit(__E1000_DOWN, &adapter->flags); |
1334 | ||
1da177e4 LT |
1335 | return 0; |
1336 | } | |
1337 | ||
581d708e MC |
1338 | /** |
1339 | * e1000_alloc_queues - Allocate memory for all rings | |
1340 | * @adapter: board private structure to initialize | |
1341 | * | |
1342 | * We allocate one ring per queue at run-time since we don't know the | |
3e1d7cd2 | 1343 | * number of queues at compile-time. |
581d708e MC |
1344 | **/ |
1345 | ||
64798845 | 1346 | static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter) |
581d708e | 1347 | { |
1c7e5b12 YB |
1348 | adapter->tx_ring = kcalloc(adapter->num_tx_queues, |
1349 | sizeof(struct e1000_tx_ring), GFP_KERNEL); | |
581d708e MC |
1350 | if (!adapter->tx_ring) |
1351 | return -ENOMEM; | |
581d708e | 1352 | |
1c7e5b12 YB |
1353 | adapter->rx_ring = kcalloc(adapter->num_rx_queues, |
1354 | sizeof(struct e1000_rx_ring), GFP_KERNEL); | |
581d708e MC |
1355 | if (!adapter->rx_ring) { |
1356 | kfree(adapter->tx_ring); | |
1357 | return -ENOMEM; | |
1358 | } | |
581d708e | 1359 | |
581d708e MC |
1360 | return E1000_SUCCESS; |
1361 | } | |
1362 | ||
1da177e4 LT |
1363 | /** |
1364 | * e1000_open - Called when a network interface is made active | |
1365 | * @netdev: network interface device structure | |
1366 | * | |
1367 | * Returns 0 on success, negative value on failure | |
1368 | * | |
1369 | * The open entry point is called when a network interface is made | |
1370 | * active by the system (IFF_UP). At this point all resources needed | |
1371 | * for transmit and receive operations are allocated, the interrupt | |
1372 | * handler is registered with the OS, the watchdog timer is started, | |
1373 | * and the stack is notified that the interface is ready. | |
1374 | **/ | |
1375 | ||
64798845 | 1376 | static int e1000_open(struct net_device *netdev) |
1da177e4 | 1377 | { |
60490fe0 | 1378 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 1379 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
1380 | int err; |
1381 | ||
2db10a08 | 1382 | /* disallow open during test */ |
1314bbf3 | 1383 | if (test_bit(__E1000_TESTING, &adapter->flags)) |
2db10a08 AK |
1384 | return -EBUSY; |
1385 | ||
eb62efd2 JB |
1386 | netif_carrier_off(netdev); |
1387 | ||
1da177e4 | 1388 | /* allocate transmit descriptors */ |
e0aac5a2 AK |
1389 | err = e1000_setup_all_tx_resources(adapter); |
1390 | if (err) | |
1da177e4 LT |
1391 | goto err_setup_tx; |
1392 | ||
1393 | /* allocate receive descriptors */ | |
e0aac5a2 | 1394 | err = e1000_setup_all_rx_resources(adapter); |
b5bf28cd | 1395 | if (err) |
e0aac5a2 | 1396 | goto err_setup_rx; |
b5bf28cd | 1397 | |
79f05bf0 AK |
1398 | e1000_power_up_phy(adapter); |
1399 | ||
2d7edb92 | 1400 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
1dc32918 | 1401 | if ((hw->mng_cookie.status & |
2d7edb92 MC |
1402 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { |
1403 | e1000_update_mng_vlan(adapter); | |
1404 | } | |
1da177e4 | 1405 | |
e0aac5a2 AK |
1406 | /* before we allocate an interrupt, we must be ready to handle it. |
1407 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt | |
1408 | * as soon as we call pci_request_irq, so we have to setup our | |
1409 | * clean_rx handler before we do so. */ | |
1410 | e1000_configure(adapter); | |
1411 | ||
1412 | err = e1000_request_irq(adapter); | |
1413 | if (err) | |
1414 | goto err_req_irq; | |
1415 | ||
1416 | /* From here on the code is the same as e1000_up() */ | |
1417 | clear_bit(__E1000_DOWN, &adapter->flags); | |
1418 | ||
bea3348e | 1419 | napi_enable(&adapter->napi); |
47313054 | 1420 | |
e0aac5a2 AK |
1421 | e1000_irq_enable(adapter); |
1422 | ||
076152d5 BH |
1423 | netif_start_queue(netdev); |
1424 | ||
e0aac5a2 | 1425 | /* fire a link status change interrupt to start the watchdog */ |
1dc32918 | 1426 | ew32(ICS, E1000_ICS_LSC); |
e0aac5a2 | 1427 | |
1da177e4 LT |
1428 | return E1000_SUCCESS; |
1429 | ||
b5bf28cd | 1430 | err_req_irq: |
e0aac5a2 | 1431 | e1000_power_down_phy(adapter); |
581d708e | 1432 | e1000_free_all_rx_resources(adapter); |
1da177e4 | 1433 | err_setup_rx: |
581d708e | 1434 | e1000_free_all_tx_resources(adapter); |
1da177e4 LT |
1435 | err_setup_tx: |
1436 | e1000_reset(adapter); | |
1437 | ||
1438 | return err; | |
1439 | } | |
1440 | ||
1441 | /** | |
1442 | * e1000_close - Disables a network interface | |
1443 | * @netdev: network interface device structure | |
1444 | * | |
1445 | * Returns 0, this is not allowed to fail | |
1446 | * | |
1447 | * The close entry point is called when an interface is de-activated | |
1448 | * by the OS. The hardware is still under the drivers control, but | |
1449 | * needs to be disabled. A global MAC reset is issued to stop the | |
1450 | * hardware, and all transmit and receive resources are freed. | |
1451 | **/ | |
1452 | ||
64798845 | 1453 | static int e1000_close(struct net_device *netdev) |
1da177e4 | 1454 | { |
60490fe0 | 1455 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 1456 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 1457 | |
2db10a08 | 1458 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
1da177e4 | 1459 | e1000_down(adapter); |
79f05bf0 | 1460 | e1000_power_down_phy(adapter); |
2db10a08 | 1461 | e1000_free_irq(adapter); |
1da177e4 | 1462 | |
581d708e MC |
1463 | e1000_free_all_tx_resources(adapter); |
1464 | e1000_free_all_rx_resources(adapter); | |
1da177e4 | 1465 | |
4666560a BA |
1466 | /* kill manageability vlan ID if supported, but not if a vlan with |
1467 | * the same ID is registered on the host OS (let 8021q kill it) */ | |
1dc32918 | 1468 | if ((hw->mng_cookie.status & |
4666560a | 1469 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
5622e404 | 1470 | !test_bit(adapter->mng_vlan_id, adapter->active_vlans)) { |
2d7edb92 MC |
1471 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
1472 | } | |
b55ccb35 | 1473 | |
1da177e4 LT |
1474 | return 0; |
1475 | } | |
1476 | ||
1477 | /** | |
1478 | * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary | |
1479 | * @adapter: address of board private structure | |
2d7edb92 MC |
1480 | * @start: address of beginning of memory |
1481 | * @len: length of memory | |
1da177e4 | 1482 | **/ |
64798845 JP |
1483 | static bool e1000_check_64k_bound(struct e1000_adapter *adapter, void *start, |
1484 | unsigned long len) | |
1da177e4 | 1485 | { |
1dc32918 | 1486 | struct e1000_hw *hw = &adapter->hw; |
e982f17c | 1487 | unsigned long begin = (unsigned long)start; |
1da177e4 LT |
1488 | unsigned long end = begin + len; |
1489 | ||
2648345f MC |
1490 | /* First rev 82545 and 82546 need to not allow any memory |
1491 | * write location to cross 64k boundary due to errata 23 */ | |
1dc32918 | 1492 | if (hw->mac_type == e1000_82545 || |
5377a416 | 1493 | hw->mac_type == e1000_ce4100 || |
1dc32918 | 1494 | hw->mac_type == e1000_82546) { |
c3033b01 | 1495 | return ((begin ^ (end - 1)) >> 16) != 0 ? false : true; |
1da177e4 LT |
1496 | } |
1497 | ||
c3033b01 | 1498 | return true; |
1da177e4 LT |
1499 | } |
1500 | ||
1501 | /** | |
1502 | * e1000_setup_tx_resources - allocate Tx resources (Descriptors) | |
1503 | * @adapter: board private structure | |
581d708e | 1504 | * @txdr: tx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1505 | * |
1506 | * Return 0 on success, negative on failure | |
1507 | **/ | |
1508 | ||
64798845 JP |
1509 | static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
1510 | struct e1000_tx_ring *txdr) | |
1da177e4 | 1511 | { |
1da177e4 LT |
1512 | struct pci_dev *pdev = adapter->pdev; |
1513 | int size; | |
1514 | ||
1515 | size = sizeof(struct e1000_buffer) * txdr->count; | |
89bf67f1 | 1516 | txdr->buffer_info = vzalloc(size); |
96838a40 | 1517 | if (!txdr->buffer_info) { |
feb8f478 ET |
1518 | e_err(probe, "Unable to allocate memory for the Tx descriptor " |
1519 | "ring\n"); | |
1da177e4 LT |
1520 | return -ENOMEM; |
1521 | } | |
1da177e4 LT |
1522 | |
1523 | /* round up to nearest 4K */ | |
1524 | ||
1525 | txdr->size = txdr->count * sizeof(struct e1000_tx_desc); | |
9099cfb9 | 1526 | txdr->size = ALIGN(txdr->size, 4096); |
1da177e4 | 1527 | |
b16f53be NN |
1528 | txdr->desc = dma_alloc_coherent(&pdev->dev, txdr->size, &txdr->dma, |
1529 | GFP_KERNEL); | |
96838a40 | 1530 | if (!txdr->desc) { |
1da177e4 | 1531 | setup_tx_desc_die: |
1da177e4 | 1532 | vfree(txdr->buffer_info); |
feb8f478 ET |
1533 | e_err(probe, "Unable to allocate memory for the Tx descriptor " |
1534 | "ring\n"); | |
1da177e4 LT |
1535 | return -ENOMEM; |
1536 | } | |
1537 | ||
2648345f | 1538 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1539 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
1540 | void *olddesc = txdr->desc; | |
1541 | dma_addr_t olddma = txdr->dma; | |
feb8f478 | 1542 | e_err(tx_err, "txdr align check failed: %u bytes at %p\n", |
675ad473 | 1543 | txdr->size, txdr->desc); |
2648345f | 1544 | /* Try again, without freeing the previous */ |
b16f53be NN |
1545 | txdr->desc = dma_alloc_coherent(&pdev->dev, txdr->size, |
1546 | &txdr->dma, GFP_KERNEL); | |
2648345f | 1547 | /* Failed allocation, critical failure */ |
96838a40 | 1548 | if (!txdr->desc) { |
b16f53be NN |
1549 | dma_free_coherent(&pdev->dev, txdr->size, olddesc, |
1550 | olddma); | |
1da177e4 LT |
1551 | goto setup_tx_desc_die; |
1552 | } | |
1553 | ||
1554 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { | |
1555 | /* give up */ | |
b16f53be NN |
1556 | dma_free_coherent(&pdev->dev, txdr->size, txdr->desc, |
1557 | txdr->dma); | |
1558 | dma_free_coherent(&pdev->dev, txdr->size, olddesc, | |
1559 | olddma); | |
feb8f478 | 1560 | e_err(probe, "Unable to allocate aligned memory " |
675ad473 | 1561 | "for the transmit descriptor ring\n"); |
1da177e4 LT |
1562 | vfree(txdr->buffer_info); |
1563 | return -ENOMEM; | |
1564 | } else { | |
2648345f | 1565 | /* Free old allocation, new allocation was successful */ |
b16f53be NN |
1566 | dma_free_coherent(&pdev->dev, txdr->size, olddesc, |
1567 | olddma); | |
1da177e4 LT |
1568 | } |
1569 | } | |
1570 | memset(txdr->desc, 0, txdr->size); | |
1571 | ||
1572 | txdr->next_to_use = 0; | |
1573 | txdr->next_to_clean = 0; | |
1574 | ||
1575 | return 0; | |
1576 | } | |
1577 | ||
581d708e MC |
1578 | /** |
1579 | * e1000_setup_all_tx_resources - wrapper to allocate Tx resources | |
1580 | * (Descriptors) for all queues | |
1581 | * @adapter: board private structure | |
1582 | * | |
581d708e MC |
1583 | * Return 0 on success, negative on failure |
1584 | **/ | |
1585 | ||
64798845 | 1586 | int e1000_setup_all_tx_resources(struct e1000_adapter *adapter) |
581d708e MC |
1587 | { |
1588 | int i, err = 0; | |
1589 | ||
f56799ea | 1590 | for (i = 0; i < adapter->num_tx_queues; i++) { |
581d708e MC |
1591 | err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
1592 | if (err) { | |
feb8f478 | 1593 | e_err(probe, "Allocation for Tx Queue %u failed\n", i); |
3fbbc72e VA |
1594 | for (i-- ; i >= 0; i--) |
1595 | e1000_free_tx_resources(adapter, | |
1596 | &adapter->tx_ring[i]); | |
581d708e MC |
1597 | break; |
1598 | } | |
1599 | } | |
1600 | ||
1601 | return err; | |
1602 | } | |
1603 | ||
1da177e4 LT |
1604 | /** |
1605 | * e1000_configure_tx - Configure 8254x Transmit Unit after Reset | |
1606 | * @adapter: board private structure | |
1607 | * | |
1608 | * Configure the Tx unit of the MAC after a reset. | |
1609 | **/ | |
1610 | ||
64798845 | 1611 | static void e1000_configure_tx(struct e1000_adapter *adapter) |
1da177e4 | 1612 | { |
406874a7 | 1613 | u64 tdba; |
581d708e | 1614 | struct e1000_hw *hw = &adapter->hw; |
1532ecea | 1615 | u32 tdlen, tctl, tipg; |
406874a7 | 1616 | u32 ipgr1, ipgr2; |
1da177e4 LT |
1617 | |
1618 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1619 | ||
f56799ea | 1620 | switch (adapter->num_tx_queues) { |
24025e4e MC |
1621 | case 1: |
1622 | default: | |
581d708e MC |
1623 | tdba = adapter->tx_ring[0].dma; |
1624 | tdlen = adapter->tx_ring[0].count * | |
1625 | sizeof(struct e1000_tx_desc); | |
1dc32918 JP |
1626 | ew32(TDLEN, tdlen); |
1627 | ew32(TDBAH, (tdba >> 32)); | |
1628 | ew32(TDBAL, (tdba & 0x00000000ffffffffULL)); | |
1629 | ew32(TDT, 0); | |
1630 | ew32(TDH, 0); | |
6a951698 AK |
1631 | adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH); |
1632 | adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT); | |
24025e4e MC |
1633 | break; |
1634 | } | |
1da177e4 LT |
1635 | |
1636 | /* Set the default values for the Tx Inter Packet Gap timer */ | |
1532ecea | 1637 | if ((hw->media_type == e1000_media_type_fiber || |
d89b6c67 | 1638 | hw->media_type == e1000_media_type_internal_serdes)) |
0fadb059 JK |
1639 | tipg = DEFAULT_82543_TIPG_IPGT_FIBER; |
1640 | else | |
1641 | tipg = DEFAULT_82543_TIPG_IPGT_COPPER; | |
1642 | ||
581d708e | 1643 | switch (hw->mac_type) { |
1da177e4 LT |
1644 | case e1000_82542_rev2_0: |
1645 | case e1000_82542_rev2_1: | |
1646 | tipg = DEFAULT_82542_TIPG_IPGT; | |
0fadb059 JK |
1647 | ipgr1 = DEFAULT_82542_TIPG_IPGR1; |
1648 | ipgr2 = DEFAULT_82542_TIPG_IPGR2; | |
1da177e4 LT |
1649 | break; |
1650 | default: | |
0fadb059 JK |
1651 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
1652 | ipgr2 = DEFAULT_82543_TIPG_IPGR2; | |
1653 | break; | |
1da177e4 | 1654 | } |
0fadb059 JK |
1655 | tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; |
1656 | tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; | |
1dc32918 | 1657 | ew32(TIPG, tipg); |
1da177e4 LT |
1658 | |
1659 | /* Set the Tx Interrupt Delay register */ | |
1660 | ||
1dc32918 | 1661 | ew32(TIDV, adapter->tx_int_delay); |
581d708e | 1662 | if (hw->mac_type >= e1000_82540) |
1dc32918 | 1663 | ew32(TADV, adapter->tx_abs_int_delay); |
1da177e4 LT |
1664 | |
1665 | /* Program the Transmit Control Register */ | |
1666 | ||
1dc32918 | 1667 | tctl = er32(TCTL); |
1da177e4 | 1668 | tctl &= ~E1000_TCTL_CT; |
7e6c9861 | 1669 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
1da177e4 LT |
1670 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
1671 | ||
581d708e | 1672 | e1000_config_collision_dist(hw); |
1da177e4 LT |
1673 | |
1674 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
6a042dab JB |
1675 | adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; |
1676 | ||
1677 | /* only set IDE if we are delaying interrupts using the timers */ | |
1678 | if (adapter->tx_int_delay) | |
1679 | adapter->txd_cmd |= E1000_TXD_CMD_IDE; | |
1da177e4 | 1680 | |
581d708e | 1681 | if (hw->mac_type < e1000_82543) |
1da177e4 LT |
1682 | adapter->txd_cmd |= E1000_TXD_CMD_RPS; |
1683 | else | |
1684 | adapter->txd_cmd |= E1000_TXD_CMD_RS; | |
1685 | ||
1686 | /* Cache if we're 82544 running in PCI-X because we'll | |
1687 | * need this to apply a workaround later in the send path. */ | |
581d708e MC |
1688 | if (hw->mac_type == e1000_82544 && |
1689 | hw->bus_type == e1000_bus_type_pcix) | |
1da177e4 | 1690 | adapter->pcix_82544 = 1; |
7e6c9861 | 1691 | |
1dc32918 | 1692 | ew32(TCTL, tctl); |
7e6c9861 | 1693 | |
1da177e4 LT |
1694 | } |
1695 | ||
1696 | /** | |
1697 | * e1000_setup_rx_resources - allocate Rx resources (Descriptors) | |
1698 | * @adapter: board private structure | |
581d708e | 1699 | * @rxdr: rx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1700 | * |
1701 | * Returns 0 on success, negative on failure | |
1702 | **/ | |
1703 | ||
64798845 JP |
1704 | static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
1705 | struct e1000_rx_ring *rxdr) | |
1da177e4 | 1706 | { |
1da177e4 | 1707 | struct pci_dev *pdev = adapter->pdev; |
2d7edb92 | 1708 | int size, desc_len; |
1da177e4 LT |
1709 | |
1710 | size = sizeof(struct e1000_buffer) * rxdr->count; | |
89bf67f1 | 1711 | rxdr->buffer_info = vzalloc(size); |
581d708e | 1712 | if (!rxdr->buffer_info) { |
feb8f478 ET |
1713 | e_err(probe, "Unable to allocate memory for the Rx descriptor " |
1714 | "ring\n"); | |
1da177e4 LT |
1715 | return -ENOMEM; |
1716 | } | |
1da177e4 | 1717 | |
1532ecea | 1718 | desc_len = sizeof(struct e1000_rx_desc); |
2d7edb92 | 1719 | |
1da177e4 LT |
1720 | /* Round up to nearest 4K */ |
1721 | ||
2d7edb92 | 1722 | rxdr->size = rxdr->count * desc_len; |
9099cfb9 | 1723 | rxdr->size = ALIGN(rxdr->size, 4096); |
1da177e4 | 1724 | |
b16f53be NN |
1725 | rxdr->desc = dma_alloc_coherent(&pdev->dev, rxdr->size, &rxdr->dma, |
1726 | GFP_KERNEL); | |
1da177e4 | 1727 | |
581d708e | 1728 | if (!rxdr->desc) { |
feb8f478 ET |
1729 | e_err(probe, "Unable to allocate memory for the Rx descriptor " |
1730 | "ring\n"); | |
1da177e4 | 1731 | setup_rx_desc_die: |
1da177e4 LT |
1732 | vfree(rxdr->buffer_info); |
1733 | return -ENOMEM; | |
1734 | } | |
1735 | ||
2648345f | 1736 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1737 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
1738 | void *olddesc = rxdr->desc; | |
1739 | dma_addr_t olddma = rxdr->dma; | |
feb8f478 | 1740 | e_err(rx_err, "rxdr align check failed: %u bytes at %p\n", |
675ad473 | 1741 | rxdr->size, rxdr->desc); |
2648345f | 1742 | /* Try again, without freeing the previous */ |
b16f53be NN |
1743 | rxdr->desc = dma_alloc_coherent(&pdev->dev, rxdr->size, |
1744 | &rxdr->dma, GFP_KERNEL); | |
2648345f | 1745 | /* Failed allocation, critical failure */ |
581d708e | 1746 | if (!rxdr->desc) { |
b16f53be NN |
1747 | dma_free_coherent(&pdev->dev, rxdr->size, olddesc, |
1748 | olddma); | |
feb8f478 ET |
1749 | e_err(probe, "Unable to allocate memory for the Rx " |
1750 | "descriptor ring\n"); | |
1da177e4 LT |
1751 | goto setup_rx_desc_die; |
1752 | } | |
1753 | ||
1754 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { | |
1755 | /* give up */ | |
b16f53be NN |
1756 | dma_free_coherent(&pdev->dev, rxdr->size, rxdr->desc, |
1757 | rxdr->dma); | |
1758 | dma_free_coherent(&pdev->dev, rxdr->size, olddesc, | |
1759 | olddma); | |
feb8f478 ET |
1760 | e_err(probe, "Unable to allocate aligned memory for " |
1761 | "the Rx descriptor ring\n"); | |
581d708e | 1762 | goto setup_rx_desc_die; |
1da177e4 | 1763 | } else { |
2648345f | 1764 | /* Free old allocation, new allocation was successful */ |
b16f53be NN |
1765 | dma_free_coherent(&pdev->dev, rxdr->size, olddesc, |
1766 | olddma); | |
1da177e4 LT |
1767 | } |
1768 | } | |
1769 | memset(rxdr->desc, 0, rxdr->size); | |
1770 | ||
1771 | rxdr->next_to_clean = 0; | |
1772 | rxdr->next_to_use = 0; | |
edbbb3ca | 1773 | rxdr->rx_skb_top = NULL; |
1da177e4 LT |
1774 | |
1775 | return 0; | |
1776 | } | |
1777 | ||
581d708e MC |
1778 | /** |
1779 | * e1000_setup_all_rx_resources - wrapper to allocate Rx resources | |
1780 | * (Descriptors) for all queues | |
1781 | * @adapter: board private structure | |
1782 | * | |
581d708e MC |
1783 | * Return 0 on success, negative on failure |
1784 | **/ | |
1785 | ||
64798845 | 1786 | int e1000_setup_all_rx_resources(struct e1000_adapter *adapter) |
581d708e MC |
1787 | { |
1788 | int i, err = 0; | |
1789 | ||
f56799ea | 1790 | for (i = 0; i < adapter->num_rx_queues; i++) { |
581d708e MC |
1791 | err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
1792 | if (err) { | |
feb8f478 | 1793 | e_err(probe, "Allocation for Rx Queue %u failed\n", i); |
3fbbc72e VA |
1794 | for (i-- ; i >= 0; i--) |
1795 | e1000_free_rx_resources(adapter, | |
1796 | &adapter->rx_ring[i]); | |
581d708e MC |
1797 | break; |
1798 | } | |
1799 | } | |
1800 | ||
1801 | return err; | |
1802 | } | |
1803 | ||
1da177e4 | 1804 | /** |
2648345f | 1805 | * e1000_setup_rctl - configure the receive control registers |
1da177e4 LT |
1806 | * @adapter: Board private structure |
1807 | **/ | |
64798845 | 1808 | static void e1000_setup_rctl(struct e1000_adapter *adapter) |
1da177e4 | 1809 | { |
1dc32918 | 1810 | struct e1000_hw *hw = &adapter->hw; |
630b25cd | 1811 | u32 rctl; |
1da177e4 | 1812 | |
1dc32918 | 1813 | rctl = er32(RCTL); |
1da177e4 LT |
1814 | |
1815 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
1816 | ||
1817 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | | |
1818 | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | | |
1dc32918 | 1819 | (hw->mc_filter_type << E1000_RCTL_MO_SHIFT); |
1da177e4 | 1820 | |
1dc32918 | 1821 | if (hw->tbi_compatibility_on == 1) |
1da177e4 LT |
1822 | rctl |= E1000_RCTL_SBP; |
1823 | else | |
1824 | rctl &= ~E1000_RCTL_SBP; | |
1825 | ||
2d7edb92 MC |
1826 | if (adapter->netdev->mtu <= ETH_DATA_LEN) |
1827 | rctl &= ~E1000_RCTL_LPE; | |
1828 | else | |
1829 | rctl |= E1000_RCTL_LPE; | |
1830 | ||
1da177e4 | 1831 | /* Setup buffer sizes */ |
9e2feace AK |
1832 | rctl &= ~E1000_RCTL_SZ_4096; |
1833 | rctl |= E1000_RCTL_BSEX; | |
1834 | switch (adapter->rx_buffer_len) { | |
a1415ee6 JK |
1835 | case E1000_RXBUFFER_2048: |
1836 | default: | |
1837 | rctl |= E1000_RCTL_SZ_2048; | |
1838 | rctl &= ~E1000_RCTL_BSEX; | |
1839 | break; | |
1840 | case E1000_RXBUFFER_4096: | |
1841 | rctl |= E1000_RCTL_SZ_4096; | |
1842 | break; | |
1843 | case E1000_RXBUFFER_8192: | |
1844 | rctl |= E1000_RCTL_SZ_8192; | |
1845 | break; | |
1846 | case E1000_RXBUFFER_16384: | |
1847 | rctl |= E1000_RCTL_SZ_16384; | |
1848 | break; | |
2d7edb92 MC |
1849 | } |
1850 | ||
1dc32918 | 1851 | ew32(RCTL, rctl); |
1da177e4 LT |
1852 | } |
1853 | ||
1854 | /** | |
1855 | * e1000_configure_rx - Configure 8254x Receive Unit after Reset | |
1856 | * @adapter: board private structure | |
1857 | * | |
1858 | * Configure the Rx unit of the MAC after a reset. | |
1859 | **/ | |
1860 | ||
64798845 | 1861 | static void e1000_configure_rx(struct e1000_adapter *adapter) |
1da177e4 | 1862 | { |
406874a7 | 1863 | u64 rdba; |
581d708e | 1864 | struct e1000_hw *hw = &adapter->hw; |
1532ecea | 1865 | u32 rdlen, rctl, rxcsum; |
2d7edb92 | 1866 | |
edbbb3ca JB |
1867 | if (adapter->netdev->mtu > ETH_DATA_LEN) { |
1868 | rdlen = adapter->rx_ring[0].count * | |
1869 | sizeof(struct e1000_rx_desc); | |
1870 | adapter->clean_rx = e1000_clean_jumbo_rx_irq; | |
1871 | adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers; | |
1872 | } else { | |
1873 | rdlen = adapter->rx_ring[0].count * | |
1874 | sizeof(struct e1000_rx_desc); | |
1875 | adapter->clean_rx = e1000_clean_rx_irq; | |
1876 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers; | |
1877 | } | |
1da177e4 LT |
1878 | |
1879 | /* disable receives while setting up the descriptors */ | |
1dc32918 JP |
1880 | rctl = er32(RCTL); |
1881 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
1da177e4 LT |
1882 | |
1883 | /* set the Receive Delay Timer Register */ | |
1dc32918 | 1884 | ew32(RDTR, adapter->rx_int_delay); |
1da177e4 | 1885 | |
581d708e | 1886 | if (hw->mac_type >= e1000_82540) { |
1dc32918 | 1887 | ew32(RADV, adapter->rx_abs_int_delay); |
835bb129 | 1888 | if (adapter->itr_setting != 0) |
1dc32918 | 1889 | ew32(ITR, 1000000000 / (adapter->itr * 256)); |
1da177e4 LT |
1890 | } |
1891 | ||
581d708e MC |
1892 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
1893 | * the Base and Length of the Rx Descriptor Ring */ | |
f56799ea | 1894 | switch (adapter->num_rx_queues) { |
24025e4e MC |
1895 | case 1: |
1896 | default: | |
581d708e | 1897 | rdba = adapter->rx_ring[0].dma; |
1dc32918 JP |
1898 | ew32(RDLEN, rdlen); |
1899 | ew32(RDBAH, (rdba >> 32)); | |
1900 | ew32(RDBAL, (rdba & 0x00000000ffffffffULL)); | |
1901 | ew32(RDT, 0); | |
1902 | ew32(RDH, 0); | |
6a951698 AK |
1903 | adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH); |
1904 | adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT); | |
581d708e | 1905 | break; |
24025e4e MC |
1906 | } |
1907 | ||
1da177e4 | 1908 | /* Enable 82543 Receive Checksum Offload for TCP and UDP */ |
581d708e | 1909 | if (hw->mac_type >= e1000_82543) { |
1dc32918 | 1910 | rxcsum = er32(RXCSUM); |
630b25cd | 1911 | if (adapter->rx_csum) |
2d7edb92 | 1912 | rxcsum |= E1000_RXCSUM_TUOFL; |
630b25cd | 1913 | else |
2d7edb92 | 1914 | /* don't need to clear IPPCSE as it defaults to 0 */ |
630b25cd | 1915 | rxcsum &= ~E1000_RXCSUM_TUOFL; |
1dc32918 | 1916 | ew32(RXCSUM, rxcsum); |
1da177e4 LT |
1917 | } |
1918 | ||
1919 | /* Enable Receives */ | |
1dc32918 | 1920 | ew32(RCTL, rctl); |
1da177e4 LT |
1921 | } |
1922 | ||
1923 | /** | |
581d708e | 1924 | * e1000_free_tx_resources - Free Tx Resources per Queue |
1da177e4 | 1925 | * @adapter: board private structure |
581d708e | 1926 | * @tx_ring: Tx descriptor ring for a specific queue |
1da177e4 LT |
1927 | * |
1928 | * Free all transmit software resources | |
1929 | **/ | |
1930 | ||
64798845 JP |
1931 | static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
1932 | struct e1000_tx_ring *tx_ring) | |
1da177e4 LT |
1933 | { |
1934 | struct pci_dev *pdev = adapter->pdev; | |
1935 | ||
581d708e | 1936 | e1000_clean_tx_ring(adapter, tx_ring); |
1da177e4 | 1937 | |
581d708e MC |
1938 | vfree(tx_ring->buffer_info); |
1939 | tx_ring->buffer_info = NULL; | |
1da177e4 | 1940 | |
b16f53be NN |
1941 | dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, |
1942 | tx_ring->dma); | |
1da177e4 | 1943 | |
581d708e MC |
1944 | tx_ring->desc = NULL; |
1945 | } | |
1946 | ||
1947 | /** | |
1948 | * e1000_free_all_tx_resources - Free Tx Resources for All Queues | |
1949 | * @adapter: board private structure | |
1950 | * | |
1951 | * Free all transmit software resources | |
1952 | **/ | |
1953 | ||
64798845 | 1954 | void e1000_free_all_tx_resources(struct e1000_adapter *adapter) |
581d708e MC |
1955 | { |
1956 | int i; | |
1957 | ||
f56799ea | 1958 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 1959 | e1000_free_tx_resources(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
1960 | } |
1961 | ||
64798845 JP |
1962 | static void e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, |
1963 | struct e1000_buffer *buffer_info) | |
1da177e4 | 1964 | { |
602c0554 AD |
1965 | if (buffer_info->dma) { |
1966 | if (buffer_info->mapped_as_page) | |
b16f53be NN |
1967 | dma_unmap_page(&adapter->pdev->dev, buffer_info->dma, |
1968 | buffer_info->length, DMA_TO_DEVICE); | |
602c0554 | 1969 | else |
b16f53be | 1970 | dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, |
602c0554 | 1971 | buffer_info->length, |
b16f53be | 1972 | DMA_TO_DEVICE); |
602c0554 AD |
1973 | buffer_info->dma = 0; |
1974 | } | |
a9ebadd6 | 1975 | if (buffer_info->skb) { |
1da177e4 | 1976 | dev_kfree_skb_any(buffer_info->skb); |
a9ebadd6 JB |
1977 | buffer_info->skb = NULL; |
1978 | } | |
37e73df8 | 1979 | buffer_info->time_stamp = 0; |
a9ebadd6 | 1980 | /* buffer_info must be completely set up in the transmit path */ |
1da177e4 LT |
1981 | } |
1982 | ||
1983 | /** | |
1984 | * e1000_clean_tx_ring - Free Tx Buffers | |
1985 | * @adapter: board private structure | |
581d708e | 1986 | * @tx_ring: ring to be cleaned |
1da177e4 LT |
1987 | **/ |
1988 | ||
64798845 JP |
1989 | static void e1000_clean_tx_ring(struct e1000_adapter *adapter, |
1990 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 1991 | { |
1dc32918 | 1992 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
1993 | struct e1000_buffer *buffer_info; |
1994 | unsigned long size; | |
1995 | unsigned int i; | |
1996 | ||
1997 | /* Free all the Tx ring sk_buffs */ | |
1998 | ||
96838a40 | 1999 | for (i = 0; i < tx_ring->count; i++) { |
1da177e4 LT |
2000 | buffer_info = &tx_ring->buffer_info[i]; |
2001 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); | |
2002 | } | |
2003 | ||
2004 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
2005 | memset(tx_ring->buffer_info, 0, size); | |
2006 | ||
2007 | /* Zero out the descriptor ring */ | |
2008 | ||
2009 | memset(tx_ring->desc, 0, tx_ring->size); | |
2010 | ||
2011 | tx_ring->next_to_use = 0; | |
2012 | tx_ring->next_to_clean = 0; | |
fd803241 | 2013 | tx_ring->last_tx_tso = 0; |
1da177e4 | 2014 | |
1dc32918 JP |
2015 | writel(0, hw->hw_addr + tx_ring->tdh); |
2016 | writel(0, hw->hw_addr + tx_ring->tdt); | |
581d708e MC |
2017 | } |
2018 | ||
2019 | /** | |
2020 | * e1000_clean_all_tx_rings - Free Tx Buffers for all queues | |
2021 | * @adapter: board private structure | |
2022 | **/ | |
2023 | ||
64798845 | 2024 | static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter) |
581d708e MC |
2025 | { |
2026 | int i; | |
2027 | ||
f56799ea | 2028 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 2029 | e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
2030 | } |
2031 | ||
2032 | /** | |
2033 | * e1000_free_rx_resources - Free Rx Resources | |
2034 | * @adapter: board private structure | |
581d708e | 2035 | * @rx_ring: ring to clean the resources from |
1da177e4 LT |
2036 | * |
2037 | * Free all receive software resources | |
2038 | **/ | |
2039 | ||
64798845 JP |
2040 | static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
2041 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 2042 | { |
1da177e4 LT |
2043 | struct pci_dev *pdev = adapter->pdev; |
2044 | ||
581d708e | 2045 | e1000_clean_rx_ring(adapter, rx_ring); |
1da177e4 LT |
2046 | |
2047 | vfree(rx_ring->buffer_info); | |
2048 | rx_ring->buffer_info = NULL; | |
2049 | ||
b16f53be NN |
2050 | dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, |
2051 | rx_ring->dma); | |
1da177e4 LT |
2052 | |
2053 | rx_ring->desc = NULL; | |
2054 | } | |
2055 | ||
2056 | /** | |
581d708e | 2057 | * e1000_free_all_rx_resources - Free Rx Resources for All Queues |
1da177e4 | 2058 | * @adapter: board private structure |
581d708e MC |
2059 | * |
2060 | * Free all receive software resources | |
2061 | **/ | |
2062 | ||
64798845 | 2063 | void e1000_free_all_rx_resources(struct e1000_adapter *adapter) |
581d708e MC |
2064 | { |
2065 | int i; | |
2066 | ||
f56799ea | 2067 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e MC |
2068 | e1000_free_rx_resources(adapter, &adapter->rx_ring[i]); |
2069 | } | |
2070 | ||
2071 | /** | |
2072 | * e1000_clean_rx_ring - Free Rx Buffers per Queue | |
2073 | * @adapter: board private structure | |
2074 | * @rx_ring: ring to free buffers from | |
1da177e4 LT |
2075 | **/ |
2076 | ||
64798845 JP |
2077 | static void e1000_clean_rx_ring(struct e1000_adapter *adapter, |
2078 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 2079 | { |
1dc32918 | 2080 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
2081 | struct e1000_buffer *buffer_info; |
2082 | struct pci_dev *pdev = adapter->pdev; | |
2083 | unsigned long size; | |
630b25cd | 2084 | unsigned int i; |
1da177e4 LT |
2085 | |
2086 | /* Free all the Rx ring sk_buffs */ | |
96838a40 | 2087 | for (i = 0; i < rx_ring->count; i++) { |
1da177e4 | 2088 | buffer_info = &rx_ring->buffer_info[i]; |
edbbb3ca JB |
2089 | if (buffer_info->dma && |
2090 | adapter->clean_rx == e1000_clean_rx_irq) { | |
b16f53be | 2091 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
edbbb3ca | 2092 | buffer_info->length, |
b16f53be | 2093 | DMA_FROM_DEVICE); |
edbbb3ca JB |
2094 | } else if (buffer_info->dma && |
2095 | adapter->clean_rx == e1000_clean_jumbo_rx_irq) { | |
b16f53be NN |
2096 | dma_unmap_page(&pdev->dev, buffer_info->dma, |
2097 | buffer_info->length, | |
2098 | DMA_FROM_DEVICE); | |
679be3ba | 2099 | } |
1da177e4 | 2100 | |
679be3ba | 2101 | buffer_info->dma = 0; |
edbbb3ca JB |
2102 | if (buffer_info->page) { |
2103 | put_page(buffer_info->page); | |
2104 | buffer_info->page = NULL; | |
2105 | } | |
679be3ba | 2106 | if (buffer_info->skb) { |
1da177e4 LT |
2107 | dev_kfree_skb(buffer_info->skb); |
2108 | buffer_info->skb = NULL; | |
997f5cbd | 2109 | } |
1da177e4 LT |
2110 | } |
2111 | ||
edbbb3ca JB |
2112 | /* there also may be some cached data from a chained receive */ |
2113 | if (rx_ring->rx_skb_top) { | |
2114 | dev_kfree_skb(rx_ring->rx_skb_top); | |
2115 | rx_ring->rx_skb_top = NULL; | |
2116 | } | |
2117 | ||
1da177e4 LT |
2118 | size = sizeof(struct e1000_buffer) * rx_ring->count; |
2119 | memset(rx_ring->buffer_info, 0, size); | |
2120 | ||
2121 | /* Zero out the descriptor ring */ | |
1da177e4 LT |
2122 | memset(rx_ring->desc, 0, rx_ring->size); |
2123 | ||
2124 | rx_ring->next_to_clean = 0; | |
2125 | rx_ring->next_to_use = 0; | |
2126 | ||
1dc32918 JP |
2127 | writel(0, hw->hw_addr + rx_ring->rdh); |
2128 | writel(0, hw->hw_addr + rx_ring->rdt); | |
581d708e MC |
2129 | } |
2130 | ||
2131 | /** | |
2132 | * e1000_clean_all_rx_rings - Free Rx Buffers for all queues | |
2133 | * @adapter: board private structure | |
2134 | **/ | |
2135 | ||
64798845 | 2136 | static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter) |
581d708e MC |
2137 | { |
2138 | int i; | |
2139 | ||
f56799ea | 2140 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e | 2141 | e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]); |
1da177e4 LT |
2142 | } |
2143 | ||
2144 | /* The 82542 2.0 (revision 2) needs to have the receive unit in reset | |
2145 | * and memory write and invalidate disabled for certain operations | |
2146 | */ | |
64798845 | 2147 | static void e1000_enter_82542_rst(struct e1000_adapter *adapter) |
1da177e4 | 2148 | { |
1dc32918 | 2149 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 2150 | struct net_device *netdev = adapter->netdev; |
406874a7 | 2151 | u32 rctl; |
1da177e4 | 2152 | |
1dc32918 | 2153 | e1000_pci_clear_mwi(hw); |
1da177e4 | 2154 | |
1dc32918 | 2155 | rctl = er32(RCTL); |
1da177e4 | 2156 | rctl |= E1000_RCTL_RST; |
1dc32918 JP |
2157 | ew32(RCTL, rctl); |
2158 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
2159 | mdelay(5); |
2160 | ||
96838a40 | 2161 | if (netif_running(netdev)) |
581d708e | 2162 | e1000_clean_all_rx_rings(adapter); |
1da177e4 LT |
2163 | } |
2164 | ||
64798845 | 2165 | static void e1000_leave_82542_rst(struct e1000_adapter *adapter) |
1da177e4 | 2166 | { |
1dc32918 | 2167 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 2168 | struct net_device *netdev = adapter->netdev; |
406874a7 | 2169 | u32 rctl; |
1da177e4 | 2170 | |
1dc32918 | 2171 | rctl = er32(RCTL); |
1da177e4 | 2172 | rctl &= ~E1000_RCTL_RST; |
1dc32918 JP |
2173 | ew32(RCTL, rctl); |
2174 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
2175 | mdelay(5); |
2176 | ||
1dc32918 JP |
2177 | if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE) |
2178 | e1000_pci_set_mwi(hw); | |
1da177e4 | 2179 | |
96838a40 | 2180 | if (netif_running(netdev)) { |
72d64a43 JK |
2181 | /* No need to loop, because 82542 supports only 1 queue */ |
2182 | struct e1000_rx_ring *ring = &adapter->rx_ring[0]; | |
7c4d3367 | 2183 | e1000_configure_rx(adapter); |
72d64a43 | 2184 | adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring)); |
1da177e4 LT |
2185 | } |
2186 | } | |
2187 | ||
2188 | /** | |
2189 | * e1000_set_mac - Change the Ethernet Address of the NIC | |
2190 | * @netdev: network interface device structure | |
2191 | * @p: pointer to an address structure | |
2192 | * | |
2193 | * Returns 0 on success, negative on failure | |
2194 | **/ | |
2195 | ||
64798845 | 2196 | static int e1000_set_mac(struct net_device *netdev, void *p) |
1da177e4 | 2197 | { |
60490fe0 | 2198 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 2199 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
2200 | struct sockaddr *addr = p; |
2201 | ||
96838a40 | 2202 | if (!is_valid_ether_addr(addr->sa_data)) |
1da177e4 LT |
2203 | return -EADDRNOTAVAIL; |
2204 | ||
2205 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2206 | ||
1dc32918 | 2207 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2208 | e1000_enter_82542_rst(adapter); |
2209 | ||
2210 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
1dc32918 | 2211 | memcpy(hw->mac_addr, addr->sa_data, netdev->addr_len); |
1da177e4 | 2212 | |
1dc32918 | 2213 | e1000_rar_set(hw, hw->mac_addr, 0); |
1da177e4 | 2214 | |
1dc32918 | 2215 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2216 | e1000_leave_82542_rst(adapter); |
2217 | ||
2218 | return 0; | |
2219 | } | |
2220 | ||
2221 | /** | |
db0ce50d | 2222 | * e1000_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set |
1da177e4 LT |
2223 | * @netdev: network interface device structure |
2224 | * | |
db0ce50d PM |
2225 | * The set_rx_mode entry point is called whenever the unicast or multicast |
2226 | * address lists or the network interface flags are updated. This routine is | |
2227 | * responsible for configuring the hardware for proper unicast, multicast, | |
1da177e4 LT |
2228 | * promiscuous mode, and all-multi behavior. |
2229 | **/ | |
2230 | ||
64798845 | 2231 | static void e1000_set_rx_mode(struct net_device *netdev) |
1da177e4 | 2232 | { |
60490fe0 | 2233 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 2234 | struct e1000_hw *hw = &adapter->hw; |
ccffad25 JP |
2235 | struct netdev_hw_addr *ha; |
2236 | bool use_uc = false; | |
406874a7 JP |
2237 | u32 rctl; |
2238 | u32 hash_value; | |
868d5309 | 2239 | int i, rar_entries = E1000_RAR_ENTRIES; |
1532ecea | 2240 | int mta_reg_count = E1000_NUM_MTA_REGISTERS; |
81c52285 JB |
2241 | u32 *mcarray = kcalloc(mta_reg_count, sizeof(u32), GFP_ATOMIC); |
2242 | ||
2243 | if (!mcarray) { | |
feb8f478 | 2244 | e_err(probe, "memory allocation failed\n"); |
81c52285 JB |
2245 | return; |
2246 | } | |
cd94dd0b | 2247 | |
2648345f MC |
2248 | /* Check for Promiscuous and All Multicast modes */ |
2249 | ||
1dc32918 | 2250 | rctl = er32(RCTL); |
1da177e4 | 2251 | |
96838a40 | 2252 | if (netdev->flags & IFF_PROMISC) { |
1da177e4 | 2253 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
746b9f02 | 2254 | rctl &= ~E1000_RCTL_VFE; |
1da177e4 | 2255 | } else { |
1532ecea | 2256 | if (netdev->flags & IFF_ALLMULTI) |
746b9f02 | 2257 | rctl |= E1000_RCTL_MPE; |
1532ecea | 2258 | else |
746b9f02 | 2259 | rctl &= ~E1000_RCTL_MPE; |
1532ecea | 2260 | /* Enable VLAN filter if there is a VLAN */ |
5622e404 | 2261 | if (e1000_vlan_used(adapter)) |
1532ecea | 2262 | rctl |= E1000_RCTL_VFE; |
db0ce50d PM |
2263 | } |
2264 | ||
32e7bfc4 | 2265 | if (netdev_uc_count(netdev) > rar_entries - 1) { |
db0ce50d PM |
2266 | rctl |= E1000_RCTL_UPE; |
2267 | } else if (!(netdev->flags & IFF_PROMISC)) { | |
2268 | rctl &= ~E1000_RCTL_UPE; | |
ccffad25 | 2269 | use_uc = true; |
1da177e4 LT |
2270 | } |
2271 | ||
1dc32918 | 2272 | ew32(RCTL, rctl); |
1da177e4 LT |
2273 | |
2274 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2275 | ||
96838a40 | 2276 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2277 | e1000_enter_82542_rst(adapter); |
2278 | ||
db0ce50d PM |
2279 | /* load the first 14 addresses into the exact filters 1-14. Unicast |
2280 | * addresses take precedence to avoid disabling unicast filtering | |
2281 | * when possible. | |
2282 | * | |
b595076a | 2283 | * RAR 0 is used for the station MAC address |
1da177e4 LT |
2284 | * if there are not 14 addresses, go ahead and clear the filters |
2285 | */ | |
ccffad25 JP |
2286 | i = 1; |
2287 | if (use_uc) | |
32e7bfc4 | 2288 | netdev_for_each_uc_addr(ha, netdev) { |
ccffad25 JP |
2289 | if (i == rar_entries) |
2290 | break; | |
2291 | e1000_rar_set(hw, ha->addr, i++); | |
2292 | } | |
2293 | ||
22bedad3 | 2294 | netdev_for_each_mc_addr(ha, netdev) { |
7a81e9f3 JP |
2295 | if (i == rar_entries) { |
2296 | /* load any remaining addresses into the hash table */ | |
2297 | u32 hash_reg, hash_bit, mta; | |
22bedad3 | 2298 | hash_value = e1000_hash_mc_addr(hw, ha->addr); |
7a81e9f3 JP |
2299 | hash_reg = (hash_value >> 5) & 0x7F; |
2300 | hash_bit = hash_value & 0x1F; | |
2301 | mta = (1 << hash_bit); | |
2302 | mcarray[hash_reg] |= mta; | |
10886af5 | 2303 | } else { |
22bedad3 | 2304 | e1000_rar_set(hw, ha->addr, i++); |
1da177e4 LT |
2305 | } |
2306 | } | |
2307 | ||
7a81e9f3 JP |
2308 | for (; i < rar_entries; i++) { |
2309 | E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); | |
2310 | E1000_WRITE_FLUSH(); | |
2311 | E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); | |
2312 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
2313 | } |
2314 | ||
81c52285 JB |
2315 | /* write the hash table completely, write from bottom to avoid |
2316 | * both stupid write combining chipsets, and flushing each write */ | |
2317 | for (i = mta_reg_count - 1; i >= 0 ; i--) { | |
2318 | /* | |
2319 | * If we are on an 82544 has an errata where writing odd | |
2320 | * offsets overwrites the previous even offset, but writing | |
2321 | * backwards over the range solves the issue by always | |
2322 | * writing the odd offset first | |
2323 | */ | |
2324 | E1000_WRITE_REG_ARRAY(hw, MTA, i, mcarray[i]); | |
2325 | } | |
2326 | E1000_WRITE_FLUSH(); | |
2327 | ||
96838a40 | 2328 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 | 2329 | e1000_leave_82542_rst(adapter); |
81c52285 JB |
2330 | |
2331 | kfree(mcarray); | |
1da177e4 LT |
2332 | } |
2333 | ||
2334 | /* Need to wait a few seconds after link up to get diagnostic information from | |
2335 | * the phy */ | |
2336 | ||
64798845 | 2337 | static void e1000_update_phy_info(unsigned long data) |
1da177e4 | 2338 | { |
e982f17c | 2339 | struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
5cf42fcd JB |
2340 | schedule_work(&adapter->phy_info_task); |
2341 | } | |
2342 | ||
2343 | static void e1000_update_phy_info_task(struct work_struct *work) | |
2344 | { | |
2345 | struct e1000_adapter *adapter = container_of(work, | |
2346 | struct e1000_adapter, | |
2347 | phy_info_task); | |
1dc32918 | 2348 | struct e1000_hw *hw = &adapter->hw; |
338c15e4 JB |
2349 | |
2350 | rtnl_lock(); | |
1dc32918 | 2351 | e1000_phy_get_info(hw, &adapter->phy_info); |
338c15e4 | 2352 | rtnl_unlock(); |
1da177e4 LT |
2353 | } |
2354 | ||
2355 | /** | |
2356 | * e1000_82547_tx_fifo_stall - Timer Call-back | |
2357 | * @data: pointer to adapter cast into an unsigned long | |
2358 | **/ | |
64798845 | 2359 | static void e1000_82547_tx_fifo_stall(unsigned long data) |
1da177e4 | 2360 | { |
e982f17c | 2361 | struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
5cf42fcd JB |
2362 | schedule_work(&adapter->fifo_stall_task); |
2363 | } | |
2364 | ||
2365 | /** | |
2366 | * e1000_82547_tx_fifo_stall_task - task to complete work | |
2367 | * @work: work struct contained inside adapter struct | |
2368 | **/ | |
2369 | static void e1000_82547_tx_fifo_stall_task(struct work_struct *work) | |
2370 | { | |
2371 | struct e1000_adapter *adapter = container_of(work, | |
2372 | struct e1000_adapter, | |
2373 | fifo_stall_task); | |
1dc32918 | 2374 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 2375 | struct net_device *netdev = adapter->netdev; |
406874a7 | 2376 | u32 tctl; |
1da177e4 | 2377 | |
338c15e4 | 2378 | rtnl_lock(); |
96838a40 | 2379 | if (atomic_read(&adapter->tx_fifo_stall)) { |
1dc32918 JP |
2380 | if ((er32(TDT) == er32(TDH)) && |
2381 | (er32(TDFT) == er32(TDFH)) && | |
2382 | (er32(TDFTS) == er32(TDFHS))) { | |
2383 | tctl = er32(TCTL); | |
2384 | ew32(TCTL, tctl & ~E1000_TCTL_EN); | |
2385 | ew32(TDFT, adapter->tx_head_addr); | |
2386 | ew32(TDFH, adapter->tx_head_addr); | |
2387 | ew32(TDFTS, adapter->tx_head_addr); | |
2388 | ew32(TDFHS, adapter->tx_head_addr); | |
2389 | ew32(TCTL, tctl); | |
2390 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
2391 | |
2392 | adapter->tx_fifo_head = 0; | |
2393 | atomic_set(&adapter->tx_fifo_stall, 0); | |
2394 | netif_wake_queue(netdev); | |
baa34745 | 2395 | } else if (!test_bit(__E1000_DOWN, &adapter->flags)) { |
1da177e4 LT |
2396 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); |
2397 | } | |
2398 | } | |
338c15e4 | 2399 | rtnl_unlock(); |
1da177e4 LT |
2400 | } |
2401 | ||
b548192a | 2402 | bool e1000_has_link(struct e1000_adapter *adapter) |
be0f0719 JB |
2403 | { |
2404 | struct e1000_hw *hw = &adapter->hw; | |
2405 | bool link_active = false; | |
be0f0719 | 2406 | |
6d9e5130 NS |
2407 | /* get_link_status is set on LSC (link status) interrupt or rx |
2408 | * sequence error interrupt (except on intel ce4100). | |
2409 | * get_link_status will stay false until the | |
2410 | * e1000_check_for_link establishes link for copper adapters | |
2411 | * ONLY | |
be0f0719 JB |
2412 | */ |
2413 | switch (hw->media_type) { | |
2414 | case e1000_media_type_copper: | |
6d9e5130 NS |
2415 | if (hw->mac_type == e1000_ce4100) |
2416 | hw->get_link_status = 1; | |
be0f0719 | 2417 | if (hw->get_link_status) { |
120a5d0d | 2418 | e1000_check_for_link(hw); |
be0f0719 JB |
2419 | link_active = !hw->get_link_status; |
2420 | } else { | |
2421 | link_active = true; | |
2422 | } | |
2423 | break; | |
2424 | case e1000_media_type_fiber: | |
120a5d0d | 2425 | e1000_check_for_link(hw); |
be0f0719 JB |
2426 | link_active = !!(er32(STATUS) & E1000_STATUS_LU); |
2427 | break; | |
2428 | case e1000_media_type_internal_serdes: | |
120a5d0d | 2429 | e1000_check_for_link(hw); |
be0f0719 JB |
2430 | link_active = hw->serdes_has_link; |
2431 | break; | |
2432 | default: | |
2433 | break; | |
2434 | } | |
2435 | ||
2436 | return link_active; | |
2437 | } | |
2438 | ||
1da177e4 LT |
2439 | /** |
2440 | * e1000_watchdog - Timer Call-back | |
2441 | * @data: pointer to adapter cast into an unsigned long | |
2442 | **/ | |
64798845 | 2443 | static void e1000_watchdog(unsigned long data) |
1da177e4 | 2444 | { |
e982f17c | 2445 | struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
1dc32918 | 2446 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 2447 | struct net_device *netdev = adapter->netdev; |
545c67c0 | 2448 | struct e1000_tx_ring *txdr = adapter->tx_ring; |
406874a7 | 2449 | u32 link, tctl; |
90fb5135 | 2450 | |
be0f0719 JB |
2451 | link = e1000_has_link(adapter); |
2452 | if ((netif_carrier_ok(netdev)) && link) | |
2453 | goto link_up; | |
1da177e4 | 2454 | |
96838a40 JB |
2455 | if (link) { |
2456 | if (!netif_carrier_ok(netdev)) { | |
406874a7 | 2457 | u32 ctrl; |
c3033b01 | 2458 | bool txb2b = true; |
be0f0719 | 2459 | /* update snapshot of PHY registers on LSC */ |
1dc32918 | 2460 | e1000_get_speed_and_duplex(hw, |
1da177e4 LT |
2461 | &adapter->link_speed, |
2462 | &adapter->link_duplex); | |
2463 | ||
1dc32918 | 2464 | ctrl = er32(CTRL); |
675ad473 ET |
2465 | pr_info("%s NIC Link is Up %d Mbps %s, " |
2466 | "Flow Control: %s\n", | |
2467 | netdev->name, | |
2468 | adapter->link_speed, | |
2469 | adapter->link_duplex == FULL_DUPLEX ? | |
2470 | "Full Duplex" : "Half Duplex", | |
2471 | ((ctrl & E1000_CTRL_TFCE) && (ctrl & | |
2472 | E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl & | |
2473 | E1000_CTRL_RFCE) ? "RX" : ((ctrl & | |
2474 | E1000_CTRL_TFCE) ? "TX" : "None"))); | |
1da177e4 | 2475 | |
39ca5f03 | 2476 | /* adjust timeout factor according to speed/duplex */ |
66a2b0a3 | 2477 | adapter->tx_timeout_factor = 1; |
7e6c9861 JK |
2478 | switch (adapter->link_speed) { |
2479 | case SPEED_10: | |
c3033b01 | 2480 | txb2b = false; |
be0f0719 | 2481 | adapter->tx_timeout_factor = 16; |
7e6c9861 JK |
2482 | break; |
2483 | case SPEED_100: | |
c3033b01 | 2484 | txb2b = false; |
7e6c9861 JK |
2485 | /* maybe add some timeout factor ? */ |
2486 | break; | |
2487 | } | |
2488 | ||
1532ecea | 2489 | /* enable transmits in the hardware */ |
1dc32918 | 2490 | tctl = er32(TCTL); |
7e6c9861 | 2491 | tctl |= E1000_TCTL_EN; |
1dc32918 | 2492 | ew32(TCTL, tctl); |
66a2b0a3 | 2493 | |
1da177e4 | 2494 | netif_carrier_on(netdev); |
baa34745 JB |
2495 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
2496 | mod_timer(&adapter->phy_info_timer, | |
2497 | round_jiffies(jiffies + 2 * HZ)); | |
1da177e4 LT |
2498 | adapter->smartspeed = 0; |
2499 | } | |
2500 | } else { | |
96838a40 | 2501 | if (netif_carrier_ok(netdev)) { |
1da177e4 LT |
2502 | adapter->link_speed = 0; |
2503 | adapter->link_duplex = 0; | |
675ad473 ET |
2504 | pr_info("%s NIC Link is Down\n", |
2505 | netdev->name); | |
1da177e4 | 2506 | netif_carrier_off(netdev); |
baa34745 JB |
2507 | |
2508 | if (!test_bit(__E1000_DOWN, &adapter->flags)) | |
2509 | mod_timer(&adapter->phy_info_timer, | |
2510 | round_jiffies(jiffies + 2 * HZ)); | |
1da177e4 LT |
2511 | } |
2512 | ||
2513 | e1000_smartspeed(adapter); | |
2514 | } | |
2515 | ||
be0f0719 | 2516 | link_up: |
1da177e4 LT |
2517 | e1000_update_stats(adapter); |
2518 | ||
1dc32918 | 2519 | hw->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
1da177e4 | 2520 | adapter->tpt_old = adapter->stats.tpt; |
1dc32918 | 2521 | hw->collision_delta = adapter->stats.colc - adapter->colc_old; |
1da177e4 LT |
2522 | adapter->colc_old = adapter->stats.colc; |
2523 | ||
2524 | adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; | |
2525 | adapter->gorcl_old = adapter->stats.gorcl; | |
2526 | adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; | |
2527 | adapter->gotcl_old = adapter->stats.gotcl; | |
2528 | ||
1dc32918 | 2529 | e1000_update_adaptive(hw); |
1da177e4 | 2530 | |
f56799ea | 2531 | if (!netif_carrier_ok(netdev)) { |
581d708e | 2532 | if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { |
1da177e4 LT |
2533 | /* We've lost link, so the controller stops DMA, |
2534 | * but we've got queued Tx work that's never going | |
2535 | * to get done, so reset controller to flush Tx. | |
2536 | * (Do the reset outside of interrupt context). */ | |
87041639 JK |
2537 | adapter->tx_timeout_count++; |
2538 | schedule_work(&adapter->reset_task); | |
c2d5ab49 JB |
2539 | /* return immediately since reset is imminent */ |
2540 | return; | |
1da177e4 LT |
2541 | } |
2542 | } | |
2543 | ||
eab2abf5 JB |
2544 | /* Simple mode for Interrupt Throttle Rate (ITR) */ |
2545 | if (hw->mac_type >= e1000_82540 && adapter->itr_setting == 4) { | |
2546 | /* | |
2547 | * Symmetric Tx/Rx gets a reduced ITR=2000; | |
2548 | * Total asymmetrical Tx or Rx gets ITR=8000; | |
2549 | * everyone else is between 2000-8000. | |
2550 | */ | |
2551 | u32 goc = (adapter->gotcl + adapter->gorcl) / 10000; | |
2552 | u32 dif = (adapter->gotcl > adapter->gorcl ? | |
2553 | adapter->gotcl - adapter->gorcl : | |
2554 | adapter->gorcl - adapter->gotcl) / 10000; | |
2555 | u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; | |
2556 | ||
2557 | ew32(ITR, 1000000000 / (itr * 256)); | |
2558 | } | |
2559 | ||
1da177e4 | 2560 | /* Cause software interrupt to ensure rx ring is cleaned */ |
1dc32918 | 2561 | ew32(ICS, E1000_ICS_RXDMT0); |
1da177e4 | 2562 | |
2648345f | 2563 | /* Force detection of hung controller every watchdog period */ |
c3033b01 | 2564 | adapter->detect_tx_hung = true; |
1da177e4 LT |
2565 | |
2566 | /* Reset the timer */ | |
baa34745 JB |
2567 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
2568 | mod_timer(&adapter->watchdog_timer, | |
2569 | round_jiffies(jiffies + 2 * HZ)); | |
1da177e4 LT |
2570 | } |
2571 | ||
835bb129 JB |
2572 | enum latency_range { |
2573 | lowest_latency = 0, | |
2574 | low_latency = 1, | |
2575 | bulk_latency = 2, | |
2576 | latency_invalid = 255 | |
2577 | }; | |
2578 | ||
2579 | /** | |
2580 | * e1000_update_itr - update the dynamic ITR value based on statistics | |
8fce4731 JB |
2581 | * @adapter: pointer to adapter |
2582 | * @itr_setting: current adapter->itr | |
2583 | * @packets: the number of packets during this measurement interval | |
2584 | * @bytes: the number of bytes during this measurement interval | |
2585 | * | |
835bb129 JB |
2586 | * Stores a new ITR value based on packets and byte |
2587 | * counts during the last interrupt. The advantage of per interrupt | |
2588 | * computation is faster updates and more accurate ITR for the current | |
2589 | * traffic pattern. Constants in this function were computed | |
2590 | * based on theoretical maximum wire speed and thresholds were set based | |
2591 | * on testing data as well as attempting to minimize response time | |
2592 | * while increasing bulk throughput. | |
2593 | * this functionality is controlled by the InterruptThrottleRate module | |
2594 | * parameter (see e1000_param.c) | |
835bb129 JB |
2595 | **/ |
2596 | static unsigned int e1000_update_itr(struct e1000_adapter *adapter, | |
64798845 | 2597 | u16 itr_setting, int packets, int bytes) |
835bb129 JB |
2598 | { |
2599 | unsigned int retval = itr_setting; | |
2600 | struct e1000_hw *hw = &adapter->hw; | |
2601 | ||
2602 | if (unlikely(hw->mac_type < e1000_82540)) | |
2603 | goto update_itr_done; | |
2604 | ||
2605 | if (packets == 0) | |
2606 | goto update_itr_done; | |
2607 | ||
835bb129 JB |
2608 | switch (itr_setting) { |
2609 | case lowest_latency: | |
2b65326e JB |
2610 | /* jumbo frames get bulk treatment*/ |
2611 | if (bytes/packets > 8000) | |
2612 | retval = bulk_latency; | |
2613 | else if ((packets < 5) && (bytes > 512)) | |
835bb129 JB |
2614 | retval = low_latency; |
2615 | break; | |
2616 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
2617 | if (bytes > 10000) { | |
2b65326e JB |
2618 | /* jumbo frames need bulk latency setting */ |
2619 | if (bytes/packets > 8000) | |
2620 | retval = bulk_latency; | |
2621 | else if ((packets < 10) || ((bytes/packets) > 1200)) | |
835bb129 JB |
2622 | retval = bulk_latency; |
2623 | else if ((packets > 35)) | |
2624 | retval = lowest_latency; | |
2b65326e JB |
2625 | } else if (bytes/packets > 2000) |
2626 | retval = bulk_latency; | |
2627 | else if (packets <= 2 && bytes < 512) | |
835bb129 JB |
2628 | retval = lowest_latency; |
2629 | break; | |
2630 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
2631 | if (bytes > 25000) { | |
2632 | if (packets > 35) | |
2633 | retval = low_latency; | |
2b65326e JB |
2634 | } else if (bytes < 6000) { |
2635 | retval = low_latency; | |
835bb129 JB |
2636 | } |
2637 | break; | |
2638 | } | |
2639 | ||
2640 | update_itr_done: | |
2641 | return retval; | |
2642 | } | |
2643 | ||
2644 | static void e1000_set_itr(struct e1000_adapter *adapter) | |
2645 | { | |
2646 | struct e1000_hw *hw = &adapter->hw; | |
406874a7 JP |
2647 | u16 current_itr; |
2648 | u32 new_itr = adapter->itr; | |
835bb129 JB |
2649 | |
2650 | if (unlikely(hw->mac_type < e1000_82540)) | |
2651 | return; | |
2652 | ||
2653 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ | |
2654 | if (unlikely(adapter->link_speed != SPEED_1000)) { | |
2655 | current_itr = 0; | |
2656 | new_itr = 4000; | |
2657 | goto set_itr_now; | |
2658 | } | |
2659 | ||
2660 | adapter->tx_itr = e1000_update_itr(adapter, | |
2661 | adapter->tx_itr, | |
2662 | adapter->total_tx_packets, | |
2663 | adapter->total_tx_bytes); | |
2b65326e JB |
2664 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
2665 | if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) | |
2666 | adapter->tx_itr = low_latency; | |
2667 | ||
835bb129 JB |
2668 | adapter->rx_itr = e1000_update_itr(adapter, |
2669 | adapter->rx_itr, | |
2670 | adapter->total_rx_packets, | |
2671 | adapter->total_rx_bytes); | |
2b65326e JB |
2672 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
2673 | if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) | |
2674 | adapter->rx_itr = low_latency; | |
835bb129 JB |
2675 | |
2676 | current_itr = max(adapter->rx_itr, adapter->tx_itr); | |
2677 | ||
835bb129 JB |
2678 | switch (current_itr) { |
2679 | /* counts and packets in update_itr are dependent on these numbers */ | |
2680 | case lowest_latency: | |
2681 | new_itr = 70000; | |
2682 | break; | |
2683 | case low_latency: | |
2684 | new_itr = 20000; /* aka hwitr = ~200 */ | |
2685 | break; | |
2686 | case bulk_latency: | |
2687 | new_itr = 4000; | |
2688 | break; | |
2689 | default: | |
2690 | break; | |
2691 | } | |
2692 | ||
2693 | set_itr_now: | |
2694 | if (new_itr != adapter->itr) { | |
2695 | /* this attempts to bias the interrupt rate towards Bulk | |
2696 | * by adding intermediate steps when interrupt rate is | |
2697 | * increasing */ | |
2698 | new_itr = new_itr > adapter->itr ? | |
2699 | min(adapter->itr + (new_itr >> 2), new_itr) : | |
2700 | new_itr; | |
2701 | adapter->itr = new_itr; | |
1dc32918 | 2702 | ew32(ITR, 1000000000 / (new_itr * 256)); |
835bb129 | 2703 | } |
835bb129 JB |
2704 | } |
2705 | ||
1da177e4 LT |
2706 | #define E1000_TX_FLAGS_CSUM 0x00000001 |
2707 | #define E1000_TX_FLAGS_VLAN 0x00000002 | |
2708 | #define E1000_TX_FLAGS_TSO 0x00000004 | |
2d7edb92 | 2709 | #define E1000_TX_FLAGS_IPV4 0x00000008 |
1da177e4 LT |
2710 | #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
2711 | #define E1000_TX_FLAGS_VLAN_SHIFT 16 | |
2712 | ||
64798845 JP |
2713 | static int e1000_tso(struct e1000_adapter *adapter, |
2714 | struct e1000_tx_ring *tx_ring, struct sk_buff *skb) | |
1da177e4 | 2715 | { |
1da177e4 | 2716 | struct e1000_context_desc *context_desc; |
545c67c0 | 2717 | struct e1000_buffer *buffer_info; |
1da177e4 | 2718 | unsigned int i; |
406874a7 JP |
2719 | u32 cmd_length = 0; |
2720 | u16 ipcse = 0, tucse, mss; | |
2721 | u8 ipcss, ipcso, tucss, tucso, hdr_len; | |
1da177e4 LT |
2722 | int err; |
2723 | ||
89114afd | 2724 | if (skb_is_gso(skb)) { |
1da177e4 LT |
2725 | if (skb_header_cloned(skb)) { |
2726 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
2727 | if (err) | |
2728 | return err; | |
2729 | } | |
2730 | ||
ab6a5bb6 | 2731 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
7967168c | 2732 | mss = skb_shinfo(skb)->gso_size; |
60828236 | 2733 | if (skb->protocol == htons(ETH_P_IP)) { |
eddc9ec5 ACM |
2734 | struct iphdr *iph = ip_hdr(skb); |
2735 | iph->tot_len = 0; | |
2736 | iph->check = 0; | |
aa8223c7 ACM |
2737 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
2738 | iph->daddr, 0, | |
2739 | IPPROTO_TCP, | |
2740 | 0); | |
2d7edb92 | 2741 | cmd_length = E1000_TXD_CMD_IP; |
ea2ae17d | 2742 | ipcse = skb_transport_offset(skb) - 1; |
e15fdd03 | 2743 | } else if (skb->protocol == htons(ETH_P_IPV6)) { |
0660e03f | 2744 | ipv6_hdr(skb)->payload_len = 0; |
aa8223c7 | 2745 | tcp_hdr(skb)->check = |
0660e03f ACM |
2746 | ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
2747 | &ipv6_hdr(skb)->daddr, | |
2748 | 0, IPPROTO_TCP, 0); | |
2d7edb92 | 2749 | ipcse = 0; |
2d7edb92 | 2750 | } |
bbe735e4 | 2751 | ipcss = skb_network_offset(skb); |
eddc9ec5 | 2752 | ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; |
ea2ae17d | 2753 | tucss = skb_transport_offset(skb); |
aa8223c7 | 2754 | tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
1da177e4 LT |
2755 | tucse = 0; |
2756 | ||
2757 | cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | | |
2d7edb92 | 2758 | E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
1da177e4 | 2759 | |
581d708e MC |
2760 | i = tx_ring->next_to_use; |
2761 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
545c67c0 | 2762 | buffer_info = &tx_ring->buffer_info[i]; |
1da177e4 LT |
2763 | |
2764 | context_desc->lower_setup.ip_fields.ipcss = ipcss; | |
2765 | context_desc->lower_setup.ip_fields.ipcso = ipcso; | |
2766 | context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); | |
2767 | context_desc->upper_setup.tcp_fields.tucss = tucss; | |
2768 | context_desc->upper_setup.tcp_fields.tucso = tucso; | |
2769 | context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); | |
2770 | context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); | |
2771 | context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; | |
2772 | context_desc->cmd_and_length = cpu_to_le32(cmd_length); | |
2773 | ||
545c67c0 | 2774 | buffer_info->time_stamp = jiffies; |
a9ebadd6 | 2775 | buffer_info->next_to_watch = i; |
545c67c0 | 2776 | |
581d708e MC |
2777 | if (++i == tx_ring->count) i = 0; |
2778 | tx_ring->next_to_use = i; | |
1da177e4 | 2779 | |
c3033b01 | 2780 | return true; |
1da177e4 | 2781 | } |
c3033b01 | 2782 | return false; |
1da177e4 LT |
2783 | } |
2784 | ||
64798845 JP |
2785 | static bool e1000_tx_csum(struct e1000_adapter *adapter, |
2786 | struct e1000_tx_ring *tx_ring, struct sk_buff *skb) | |
1da177e4 LT |
2787 | { |
2788 | struct e1000_context_desc *context_desc; | |
545c67c0 | 2789 | struct e1000_buffer *buffer_info; |
1da177e4 | 2790 | unsigned int i; |
406874a7 | 2791 | u8 css; |
3ed30676 | 2792 | u32 cmd_len = E1000_TXD_CMD_DEXT; |
1da177e4 | 2793 | |
3ed30676 DG |
2794 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
2795 | return false; | |
1da177e4 | 2796 | |
3ed30676 | 2797 | switch (skb->protocol) { |
09640e63 | 2798 | case cpu_to_be16(ETH_P_IP): |
3ed30676 DG |
2799 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
2800 | cmd_len |= E1000_TXD_CMD_TCP; | |
2801 | break; | |
09640e63 | 2802 | case cpu_to_be16(ETH_P_IPV6): |
3ed30676 DG |
2803 | /* XXX not handling all IPV6 headers */ |
2804 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
2805 | cmd_len |= E1000_TXD_CMD_TCP; | |
2806 | break; | |
2807 | default: | |
2808 | if (unlikely(net_ratelimit())) | |
feb8f478 ET |
2809 | e_warn(drv, "checksum_partial proto=%x!\n", |
2810 | skb->protocol); | |
3ed30676 DG |
2811 | break; |
2812 | } | |
1da177e4 | 2813 | |
0d0b1672 | 2814 | css = skb_checksum_start_offset(skb); |
1da177e4 | 2815 | |
3ed30676 DG |
2816 | i = tx_ring->next_to_use; |
2817 | buffer_info = &tx_ring->buffer_info[i]; | |
2818 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
545c67c0 | 2819 | |
3ed30676 DG |
2820 | context_desc->lower_setup.ip_config = 0; |
2821 | context_desc->upper_setup.tcp_fields.tucss = css; | |
2822 | context_desc->upper_setup.tcp_fields.tucso = | |
2823 | css + skb->csum_offset; | |
2824 | context_desc->upper_setup.tcp_fields.tucse = 0; | |
2825 | context_desc->tcp_seg_setup.data = 0; | |
2826 | context_desc->cmd_and_length = cpu_to_le32(cmd_len); | |
1da177e4 | 2827 | |
3ed30676 DG |
2828 | buffer_info->time_stamp = jiffies; |
2829 | buffer_info->next_to_watch = i; | |
1da177e4 | 2830 | |
3ed30676 DG |
2831 | if (unlikely(++i == tx_ring->count)) i = 0; |
2832 | tx_ring->next_to_use = i; | |
2833 | ||
2834 | return true; | |
1da177e4 LT |
2835 | } |
2836 | ||
2837 | #define E1000_MAX_TXD_PWR 12 | |
2838 | #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) | |
2839 | ||
64798845 JP |
2840 | static int e1000_tx_map(struct e1000_adapter *adapter, |
2841 | struct e1000_tx_ring *tx_ring, | |
2842 | struct sk_buff *skb, unsigned int first, | |
2843 | unsigned int max_per_txd, unsigned int nr_frags, | |
2844 | unsigned int mss) | |
1da177e4 | 2845 | { |
1dc32918 | 2846 | struct e1000_hw *hw = &adapter->hw; |
602c0554 | 2847 | struct pci_dev *pdev = adapter->pdev; |
37e73df8 | 2848 | struct e1000_buffer *buffer_info; |
d20b606c | 2849 | unsigned int len = skb_headlen(skb); |
602c0554 | 2850 | unsigned int offset = 0, size, count = 0, i; |
31c15a2f | 2851 | unsigned int f, bytecount, segs; |
1da177e4 LT |
2852 | |
2853 | i = tx_ring->next_to_use; | |
2854 | ||
96838a40 | 2855 | while (len) { |
37e73df8 | 2856 | buffer_info = &tx_ring->buffer_info[i]; |
1da177e4 | 2857 | size = min(len, max_per_txd); |
fd803241 JK |
2858 | /* Workaround for Controller erratum -- |
2859 | * descriptor for non-tso packet in a linear SKB that follows a | |
2860 | * tso gets written back prematurely before the data is fully | |
0f15a8fa | 2861 | * DMA'd to the controller */ |
fd803241 | 2862 | if (!skb->data_len && tx_ring->last_tx_tso && |
89114afd | 2863 | !skb_is_gso(skb)) { |
fd803241 JK |
2864 | tx_ring->last_tx_tso = 0; |
2865 | size -= 4; | |
2866 | } | |
2867 | ||
1da177e4 LT |
2868 | /* Workaround for premature desc write-backs |
2869 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 2870 | if (unlikely(mss && !nr_frags && size == len && size > 8)) |
1da177e4 | 2871 | size -= 4; |
97338bde MC |
2872 | /* work-around for errata 10 and it applies |
2873 | * to all controllers in PCI-X mode | |
2874 | * The fix is to make sure that the first descriptor of a | |
2875 | * packet is smaller than 2048 - 16 - 16 (or 2016) bytes | |
2876 | */ | |
1dc32918 | 2877 | if (unlikely((hw->bus_type == e1000_bus_type_pcix) && |
97338bde MC |
2878 | (size > 2015) && count == 0)) |
2879 | size = 2015; | |
96838a40 | 2880 | |
1da177e4 LT |
2881 | /* Workaround for potential 82544 hang in PCI-X. Avoid |
2882 | * terminating buffers within evenly-aligned dwords. */ | |
96838a40 | 2883 | if (unlikely(adapter->pcix_82544 && |
1da177e4 LT |
2884 | !((unsigned long)(skb->data + offset + size - 1) & 4) && |
2885 | size > 4)) | |
2886 | size -= 4; | |
2887 | ||
2888 | buffer_info->length = size; | |
cdd7549e | 2889 | /* set time_stamp *before* dma to help avoid a possible race */ |
1da177e4 | 2890 | buffer_info->time_stamp = jiffies; |
602c0554 | 2891 | buffer_info->mapped_as_page = false; |
b16f53be NN |
2892 | buffer_info->dma = dma_map_single(&pdev->dev, |
2893 | skb->data + offset, | |
2894 | size, DMA_TO_DEVICE); | |
2895 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) | |
602c0554 | 2896 | goto dma_error; |
a9ebadd6 | 2897 | buffer_info->next_to_watch = i; |
1da177e4 LT |
2898 | |
2899 | len -= size; | |
2900 | offset += size; | |
2901 | count++; | |
37e73df8 AD |
2902 | if (len) { |
2903 | i++; | |
2904 | if (unlikely(i == tx_ring->count)) | |
2905 | i = 0; | |
2906 | } | |
1da177e4 LT |
2907 | } |
2908 | ||
96838a40 | 2909 | for (f = 0; f < nr_frags; f++) { |
1da177e4 LT |
2910 | struct skb_frag_struct *frag; |
2911 | ||
2912 | frag = &skb_shinfo(skb)->frags[f]; | |
2913 | len = frag->size; | |
877749bf | 2914 | offset = 0; |
1da177e4 | 2915 | |
96838a40 | 2916 | while (len) { |
877749bf | 2917 | unsigned long bufend; |
37e73df8 AD |
2918 | i++; |
2919 | if (unlikely(i == tx_ring->count)) | |
2920 | i = 0; | |
2921 | ||
1da177e4 LT |
2922 | buffer_info = &tx_ring->buffer_info[i]; |
2923 | size = min(len, max_per_txd); | |
1da177e4 LT |
2924 | /* Workaround for premature desc write-backs |
2925 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 2926 | if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) |
1da177e4 | 2927 | size -= 4; |
1da177e4 LT |
2928 | /* Workaround for potential 82544 hang in PCI-X. |
2929 | * Avoid terminating buffers within evenly-aligned | |
2930 | * dwords. */ | |
877749bf IC |
2931 | bufend = (unsigned long) |
2932 | page_to_phys(skb_frag_page(frag)); | |
2933 | bufend += offset + size - 1; | |
96838a40 | 2934 | if (unlikely(adapter->pcix_82544 && |
877749bf IC |
2935 | !(bufend & 4) && |
2936 | size > 4)) | |
1da177e4 LT |
2937 | size -= 4; |
2938 | ||
2939 | buffer_info->length = size; | |
1da177e4 | 2940 | buffer_info->time_stamp = jiffies; |
602c0554 | 2941 | buffer_info->mapped_as_page = true; |
877749bf IC |
2942 | buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag, |
2943 | offset, size, DMA_TO_DEVICE); | |
b16f53be | 2944 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
602c0554 | 2945 | goto dma_error; |
a9ebadd6 | 2946 | buffer_info->next_to_watch = i; |
1da177e4 LT |
2947 | |
2948 | len -= size; | |
2949 | offset += size; | |
2950 | count++; | |
1da177e4 LT |
2951 | } |
2952 | } | |
2953 | ||
31c15a2f DN |
2954 | segs = skb_shinfo(skb)->gso_segs ?: 1; |
2955 | /* multiply data chunks by size of headers */ | |
2956 | bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len; | |
2957 | ||
1da177e4 | 2958 | tx_ring->buffer_info[i].skb = skb; |
31c15a2f DN |
2959 | tx_ring->buffer_info[i].segs = segs; |
2960 | tx_ring->buffer_info[i].bytecount = bytecount; | |
1da177e4 LT |
2961 | tx_ring->buffer_info[first].next_to_watch = i; |
2962 | ||
2963 | return count; | |
602c0554 AD |
2964 | |
2965 | dma_error: | |
2966 | dev_err(&pdev->dev, "TX DMA map failed\n"); | |
2967 | buffer_info->dma = 0; | |
c1fa347f | 2968 | if (count) |
602c0554 | 2969 | count--; |
c1fa347f RK |
2970 | |
2971 | while (count--) { | |
2972 | if (i==0) | |
602c0554 | 2973 | i += tx_ring->count; |
c1fa347f | 2974 | i--; |
602c0554 AD |
2975 | buffer_info = &tx_ring->buffer_info[i]; |
2976 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); | |
2977 | } | |
2978 | ||
2979 | return 0; | |
1da177e4 LT |
2980 | } |
2981 | ||
64798845 JP |
2982 | static void e1000_tx_queue(struct e1000_adapter *adapter, |
2983 | struct e1000_tx_ring *tx_ring, int tx_flags, | |
2984 | int count) | |
1da177e4 | 2985 | { |
1dc32918 | 2986 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
2987 | struct e1000_tx_desc *tx_desc = NULL; |
2988 | struct e1000_buffer *buffer_info; | |
406874a7 | 2989 | u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; |
1da177e4 LT |
2990 | unsigned int i; |
2991 | ||
96838a40 | 2992 | if (likely(tx_flags & E1000_TX_FLAGS_TSO)) { |
1da177e4 LT |
2993 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
2994 | E1000_TXD_CMD_TSE; | |
2d7edb92 MC |
2995 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
2996 | ||
96838a40 | 2997 | if (likely(tx_flags & E1000_TX_FLAGS_IPV4)) |
2d7edb92 | 2998 | txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
1da177e4 LT |
2999 | } |
3000 | ||
96838a40 | 3001 | if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) { |
1da177e4 LT |
3002 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
3003 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
3004 | } | |
3005 | ||
96838a40 | 3006 | if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { |
1da177e4 LT |
3007 | txd_lower |= E1000_TXD_CMD_VLE; |
3008 | txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); | |
3009 | } | |
3010 | ||
3011 | i = tx_ring->next_to_use; | |
3012 | ||
96838a40 | 3013 | while (count--) { |
1da177e4 LT |
3014 | buffer_info = &tx_ring->buffer_info[i]; |
3015 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
3016 | tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
3017 | tx_desc->lower.data = | |
3018 | cpu_to_le32(txd_lower | buffer_info->length); | |
3019 | tx_desc->upper.data = cpu_to_le32(txd_upper); | |
96838a40 | 3020 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
3021 | } |
3022 | ||
3023 | tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); | |
3024 | ||
3025 | /* Force memory writes to complete before letting h/w | |
3026 | * know there are new descriptors to fetch. (Only | |
3027 | * applicable for weak-ordered memory model archs, | |
3028 | * such as IA-64). */ | |
3029 | wmb(); | |
3030 | ||
3031 | tx_ring->next_to_use = i; | |
1dc32918 | 3032 | writel(i, hw->hw_addr + tx_ring->tdt); |
2ce9047f JB |
3033 | /* we need this if more than one processor can write to our tail |
3034 | * at a time, it syncronizes IO on IA64/Altix systems */ | |
3035 | mmiowb(); | |
1da177e4 LT |
3036 | } |
3037 | ||
3038 | /** | |
3039 | * 82547 workaround to avoid controller hang in half-duplex environment. | |
3040 | * The workaround is to avoid queuing a large packet that would span | |
3041 | * the internal Tx FIFO ring boundary by notifying the stack to resend | |
3042 | * the packet at a later time. This gives the Tx FIFO an opportunity to | |
3043 | * flush all packets. When that occurs, we reset the Tx FIFO pointers | |
3044 | * to the beginning of the Tx FIFO. | |
3045 | **/ | |
3046 | ||
3047 | #define E1000_FIFO_HDR 0x10 | |
3048 | #define E1000_82547_PAD_LEN 0x3E0 | |
3049 | ||
64798845 JP |
3050 | static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
3051 | struct sk_buff *skb) | |
1da177e4 | 3052 | { |
406874a7 JP |
3053 | u32 fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; |
3054 | u32 skb_fifo_len = skb->len + E1000_FIFO_HDR; | |
1da177e4 | 3055 | |
9099cfb9 | 3056 | skb_fifo_len = ALIGN(skb_fifo_len, E1000_FIFO_HDR); |
1da177e4 | 3057 | |
96838a40 | 3058 | if (adapter->link_duplex != HALF_DUPLEX) |
1da177e4 LT |
3059 | goto no_fifo_stall_required; |
3060 | ||
96838a40 | 3061 | if (atomic_read(&adapter->tx_fifo_stall)) |
1da177e4 LT |
3062 | return 1; |
3063 | ||
96838a40 | 3064 | if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { |
1da177e4 LT |
3065 | atomic_set(&adapter->tx_fifo_stall, 1); |
3066 | return 1; | |
3067 | } | |
3068 | ||
3069 | no_fifo_stall_required: | |
3070 | adapter->tx_fifo_head += skb_fifo_len; | |
96838a40 | 3071 | if (adapter->tx_fifo_head >= adapter->tx_fifo_size) |
1da177e4 LT |
3072 | adapter->tx_fifo_head -= adapter->tx_fifo_size; |
3073 | return 0; | |
3074 | } | |
3075 | ||
65c7973f JB |
3076 | static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) |
3077 | { | |
3078 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3079 | struct e1000_tx_ring *tx_ring = adapter->tx_ring; | |
3080 | ||
3081 | netif_stop_queue(netdev); | |
3082 | /* Herbert's original patch had: | |
3083 | * smp_mb__after_netif_stop_queue(); | |
3084 | * but since that doesn't exist yet, just open code it. */ | |
3085 | smp_mb(); | |
3086 | ||
3087 | /* We need to check again in a case another CPU has just | |
3088 | * made room available. */ | |
3089 | if (likely(E1000_DESC_UNUSED(tx_ring) < size)) | |
3090 | return -EBUSY; | |
3091 | ||
3092 | /* A reprieve! */ | |
3093 | netif_start_queue(netdev); | |
fcfb1224 | 3094 | ++adapter->restart_queue; |
65c7973f JB |
3095 | return 0; |
3096 | } | |
3097 | ||
3098 | static int e1000_maybe_stop_tx(struct net_device *netdev, | |
3099 | struct e1000_tx_ring *tx_ring, int size) | |
3100 | { | |
3101 | if (likely(E1000_DESC_UNUSED(tx_ring) >= size)) | |
3102 | return 0; | |
3103 | return __e1000_maybe_stop_tx(netdev, size); | |
3104 | } | |
3105 | ||
1da177e4 | 3106 | #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
3b29a56d SH |
3107 | static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
3108 | struct net_device *netdev) | |
1da177e4 | 3109 | { |
60490fe0 | 3110 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 3111 | struct e1000_hw *hw = &adapter->hw; |
581d708e | 3112 | struct e1000_tx_ring *tx_ring; |
1da177e4 LT |
3113 | unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; |
3114 | unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; | |
3115 | unsigned int tx_flags = 0; | |
e743d313 | 3116 | unsigned int len = skb_headlen(skb); |
6d1e3aa7 KK |
3117 | unsigned int nr_frags; |
3118 | unsigned int mss; | |
1da177e4 | 3119 | int count = 0; |
76c224bc | 3120 | int tso; |
1da177e4 | 3121 | unsigned int f; |
1da177e4 | 3122 | |
65c7973f JB |
3123 | /* This goes back to the question of how to logically map a tx queue |
3124 | * to a flow. Right now, performance is impacted slightly negatively | |
3125 | * if using multiple tx queues. If the stack breaks away from a | |
3126 | * single qdisc implementation, we can look at this again. */ | |
581d708e | 3127 | tx_ring = adapter->tx_ring; |
24025e4e | 3128 | |
581d708e | 3129 | if (unlikely(skb->len <= 0)) { |
1da177e4 LT |
3130 | dev_kfree_skb_any(skb); |
3131 | return NETDEV_TX_OK; | |
3132 | } | |
3133 | ||
7967168c | 3134 | mss = skb_shinfo(skb)->gso_size; |
76c224bc | 3135 | /* The controller does a simple calculation to |
1da177e4 LT |
3136 | * make sure there is enough room in the FIFO before |
3137 | * initiating the DMA for each buffer. The calc is: | |
3138 | * 4 = ceil(buffer len/mss). To make sure we don't | |
3139 | * overrun the FIFO, adjust the max buffer len if mss | |
3140 | * drops. */ | |
96838a40 | 3141 | if (mss) { |
406874a7 | 3142 | u8 hdr_len; |
1da177e4 LT |
3143 | max_per_txd = min(mss << 2, max_per_txd); |
3144 | max_txd_pwr = fls(max_per_txd) - 1; | |
9a3056da | 3145 | |
ab6a5bb6 | 3146 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
6d1e3aa7 | 3147 | if (skb->data_len && hdr_len == len) { |
1dc32918 | 3148 | switch (hw->mac_type) { |
9f687888 | 3149 | unsigned int pull_size; |
683a2aa3 HX |
3150 | case e1000_82544: |
3151 | /* Make sure we have room to chop off 4 bytes, | |
3152 | * and that the end alignment will work out to | |
3153 | * this hardware's requirements | |
3154 | * NOTE: this is a TSO only workaround | |
3155 | * if end byte alignment not correct move us | |
3156 | * into the next dword */ | |
27a884dc | 3157 | if ((unsigned long)(skb_tail_pointer(skb) - 1) & 4) |
683a2aa3 HX |
3158 | break; |
3159 | /* fall through */ | |
9f687888 JK |
3160 | pull_size = min((unsigned int)4, skb->data_len); |
3161 | if (!__pskb_pull_tail(skb, pull_size)) { | |
feb8f478 ET |
3162 | e_err(drv, "__pskb_pull_tail " |
3163 | "failed.\n"); | |
9f687888 | 3164 | dev_kfree_skb_any(skb); |
749dfc70 | 3165 | return NETDEV_TX_OK; |
9f687888 | 3166 | } |
e743d313 | 3167 | len = skb_headlen(skb); |
9f687888 JK |
3168 | break; |
3169 | default: | |
3170 | /* do nothing */ | |
3171 | break; | |
d74bbd3b | 3172 | } |
9a3056da | 3173 | } |
1da177e4 LT |
3174 | } |
3175 | ||
9a3056da | 3176 | /* reserve a descriptor for the offload context */ |
84fa7933 | 3177 | if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
1da177e4 | 3178 | count++; |
2648345f | 3179 | count++; |
fd803241 | 3180 | |
fd803241 | 3181 | /* Controller Erratum workaround */ |
89114afd | 3182 | if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb)) |
fd803241 | 3183 | count++; |
fd803241 | 3184 | |
1da177e4 LT |
3185 | count += TXD_USE_COUNT(len, max_txd_pwr); |
3186 | ||
96838a40 | 3187 | if (adapter->pcix_82544) |
1da177e4 LT |
3188 | count++; |
3189 | ||
96838a40 | 3190 | /* work-around for errata 10 and it applies to all controllers |
97338bde MC |
3191 | * in PCI-X mode, so add one more descriptor to the count |
3192 | */ | |
1dc32918 | 3193 | if (unlikely((hw->bus_type == e1000_bus_type_pcix) && |
97338bde MC |
3194 | (len > 2015))) |
3195 | count++; | |
3196 | ||
1da177e4 | 3197 | nr_frags = skb_shinfo(skb)->nr_frags; |
96838a40 | 3198 | for (f = 0; f < nr_frags; f++) |
1da177e4 LT |
3199 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, |
3200 | max_txd_pwr); | |
96838a40 | 3201 | if (adapter->pcix_82544) |
1da177e4 LT |
3202 | count += nr_frags; |
3203 | ||
1da177e4 LT |
3204 | /* need: count + 2 desc gap to keep tail from touching |
3205 | * head, otherwise try next time */ | |
8017943e | 3206 | if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2))) |
1da177e4 | 3207 | return NETDEV_TX_BUSY; |
1da177e4 | 3208 | |
1dc32918 | 3209 | if (unlikely(hw->mac_type == e1000_82547)) { |
96838a40 | 3210 | if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) { |
1da177e4 | 3211 | netif_stop_queue(netdev); |
baa34745 JB |
3212 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
3213 | mod_timer(&adapter->tx_fifo_stall_timer, | |
3214 | jiffies + 1); | |
1da177e4 LT |
3215 | return NETDEV_TX_BUSY; |
3216 | } | |
3217 | } | |
3218 | ||
5622e404 | 3219 | if (vlan_tx_tag_present(skb)) { |
1da177e4 LT |
3220 | tx_flags |= E1000_TX_FLAGS_VLAN; |
3221 | tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); | |
3222 | } | |
3223 | ||
581d708e | 3224 | first = tx_ring->next_to_use; |
96838a40 | 3225 | |
581d708e | 3226 | tso = e1000_tso(adapter, tx_ring, skb); |
1da177e4 LT |
3227 | if (tso < 0) { |
3228 | dev_kfree_skb_any(skb); | |
3229 | return NETDEV_TX_OK; | |
3230 | } | |
3231 | ||
fd803241 | 3232 | if (likely(tso)) { |
8fce4731 JB |
3233 | if (likely(hw->mac_type != e1000_82544)) |
3234 | tx_ring->last_tx_tso = 1; | |
1da177e4 | 3235 | tx_flags |= E1000_TX_FLAGS_TSO; |
fd803241 | 3236 | } else if (likely(e1000_tx_csum(adapter, tx_ring, skb))) |
1da177e4 LT |
3237 | tx_flags |= E1000_TX_FLAGS_CSUM; |
3238 | ||
60828236 | 3239 | if (likely(skb->protocol == htons(ETH_P_IP))) |
2d7edb92 MC |
3240 | tx_flags |= E1000_TX_FLAGS_IPV4; |
3241 | ||
37e73df8 AD |
3242 | count = e1000_tx_map(adapter, tx_ring, skb, first, max_per_txd, |
3243 | nr_frags, mss); | |
1da177e4 | 3244 | |
37e73df8 AD |
3245 | if (count) { |
3246 | e1000_tx_queue(adapter, tx_ring, tx_flags, count); | |
37e73df8 AD |
3247 | /* Make sure there is space in the ring for the next send. */ |
3248 | e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2); | |
1da177e4 | 3249 | |
37e73df8 AD |
3250 | } else { |
3251 | dev_kfree_skb_any(skb); | |
3252 | tx_ring->buffer_info[first].time_stamp = 0; | |
3253 | tx_ring->next_to_use = first; | |
3254 | } | |
1da177e4 | 3255 | |
1da177e4 LT |
3256 | return NETDEV_TX_OK; |
3257 | } | |
3258 | ||
3259 | /** | |
3260 | * e1000_tx_timeout - Respond to a Tx Hang | |
3261 | * @netdev: network interface device structure | |
3262 | **/ | |
3263 | ||
64798845 | 3264 | static void e1000_tx_timeout(struct net_device *netdev) |
1da177e4 | 3265 | { |
60490fe0 | 3266 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
3267 | |
3268 | /* Do the reset outside of interrupt context */ | |
87041639 JK |
3269 | adapter->tx_timeout_count++; |
3270 | schedule_work(&adapter->reset_task); | |
1da177e4 LT |
3271 | } |
3272 | ||
64798845 | 3273 | static void e1000_reset_task(struct work_struct *work) |
1da177e4 | 3274 | { |
65f27f38 DH |
3275 | struct e1000_adapter *adapter = |
3276 | container_of(work, struct e1000_adapter, reset_task); | |
1da177e4 | 3277 | |
338c15e4 | 3278 | e1000_reinit_safe(adapter); |
1da177e4 LT |
3279 | } |
3280 | ||
3281 | /** | |
3282 | * e1000_get_stats - Get System Network Statistics | |
3283 | * @netdev: network interface device structure | |
3284 | * | |
3285 | * Returns the address of the device statistics structure. | |
3286 | * The statistics are actually updated from the timer callback. | |
3287 | **/ | |
3288 | ||
64798845 | 3289 | static struct net_device_stats *e1000_get_stats(struct net_device *netdev) |
1da177e4 | 3290 | { |
6b7660cd | 3291 | /* only return the current stats */ |
5fe31def | 3292 | return &netdev->stats; |
1da177e4 LT |
3293 | } |
3294 | ||
3295 | /** | |
3296 | * e1000_change_mtu - Change the Maximum Transfer Unit | |
3297 | * @netdev: network interface device structure | |
3298 | * @new_mtu: new value for maximum frame size | |
3299 | * | |
3300 | * Returns 0 on success, negative on failure | |
3301 | **/ | |
3302 | ||
64798845 | 3303 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu) |
1da177e4 | 3304 | { |
60490fe0 | 3305 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 3306 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
3307 | int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
3308 | ||
96838a40 JB |
3309 | if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || |
3310 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
feb8f478 | 3311 | e_err(probe, "Invalid MTU setting\n"); |
1da177e4 | 3312 | return -EINVAL; |
2d7edb92 | 3313 | } |
1da177e4 | 3314 | |
997f5cbd | 3315 | /* Adapter-specific max frame size limits. */ |
1dc32918 | 3316 | switch (hw->mac_type) { |
9e2feace | 3317 | case e1000_undefined ... e1000_82542_rev2_1: |
b7cb8c2c | 3318 | if (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)) { |
feb8f478 | 3319 | e_err(probe, "Jumbo Frames not supported.\n"); |
2d7edb92 | 3320 | return -EINVAL; |
2d7edb92 | 3321 | } |
997f5cbd | 3322 | break; |
997f5cbd JK |
3323 | default: |
3324 | /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */ | |
3325 | break; | |
1da177e4 LT |
3326 | } |
3327 | ||
3d6114e7 JB |
3328 | while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) |
3329 | msleep(1); | |
3330 | /* e1000_down has a dependency on max_frame_size */ | |
3331 | hw->max_frame_size = max_frame; | |
3332 | if (netif_running(netdev)) | |
3333 | e1000_down(adapter); | |
3334 | ||
87f5032e | 3335 | /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
9e2feace | 3336 | * means we reserve 2 more, this pushes us to allocate from the next |
edbbb3ca JB |
3337 | * larger slab size. |
3338 | * i.e. RXBUFFER_2048 --> size-4096 slab | |
3339 | * however with the new *_jumbo_rx* routines, jumbo receives will use | |
3340 | * fragmented skbs */ | |
9e2feace | 3341 | |
9926146b | 3342 | if (max_frame <= E1000_RXBUFFER_2048) |
9e2feace | 3343 | adapter->rx_buffer_len = E1000_RXBUFFER_2048; |
edbbb3ca JB |
3344 | else |
3345 | #if (PAGE_SIZE >= E1000_RXBUFFER_16384) | |
9e2feace | 3346 | adapter->rx_buffer_len = E1000_RXBUFFER_16384; |
edbbb3ca JB |
3347 | #elif (PAGE_SIZE >= E1000_RXBUFFER_4096) |
3348 | adapter->rx_buffer_len = PAGE_SIZE; | |
3349 | #endif | |
9e2feace AK |
3350 | |
3351 | /* adjust allocation if LPE protects us, and we aren't using SBP */ | |
1dc32918 | 3352 | if (!hw->tbi_compatibility_on && |
b7cb8c2c | 3353 | ((max_frame == (ETH_FRAME_LEN + ETH_FCS_LEN)) || |
9e2feace AK |
3354 | (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE))) |
3355 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; | |
997f5cbd | 3356 | |
675ad473 ET |
3357 | pr_info("%s changing MTU from %d to %d\n", |
3358 | netdev->name, netdev->mtu, new_mtu); | |
2d7edb92 MC |
3359 | netdev->mtu = new_mtu; |
3360 | ||
2db10a08 | 3361 | if (netif_running(netdev)) |
3d6114e7 JB |
3362 | e1000_up(adapter); |
3363 | else | |
3364 | e1000_reset(adapter); | |
3365 | ||
3366 | clear_bit(__E1000_RESETTING, &adapter->flags); | |
1da177e4 | 3367 | |
1da177e4 LT |
3368 | return 0; |
3369 | } | |
3370 | ||
3371 | /** | |
3372 | * e1000_update_stats - Update the board statistics counters | |
3373 | * @adapter: board private structure | |
3374 | **/ | |
3375 | ||
64798845 | 3376 | void e1000_update_stats(struct e1000_adapter *adapter) |
1da177e4 | 3377 | { |
5fe31def | 3378 | struct net_device *netdev = adapter->netdev; |
1da177e4 | 3379 | struct e1000_hw *hw = &adapter->hw; |
282f33c9 | 3380 | struct pci_dev *pdev = adapter->pdev; |
1da177e4 | 3381 | unsigned long flags; |
406874a7 | 3382 | u16 phy_tmp; |
1da177e4 LT |
3383 | |
3384 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF | |
3385 | ||
282f33c9 LV |
3386 | /* |
3387 | * Prevent stats update while adapter is being reset, or if the pci | |
3388 | * connection is down. | |
3389 | */ | |
9026729b | 3390 | if (adapter->link_speed == 0) |
282f33c9 | 3391 | return; |
81b1955e | 3392 | if (pci_channel_offline(pdev)) |
9026729b AK |
3393 | return; |
3394 | ||
1da177e4 LT |
3395 | spin_lock_irqsave(&adapter->stats_lock, flags); |
3396 | ||
828d055f | 3397 | /* these counters are modified from e1000_tbi_adjust_stats, |
1da177e4 LT |
3398 | * called from the interrupt context, so they must only |
3399 | * be written while holding adapter->stats_lock | |
3400 | */ | |
3401 | ||
1dc32918 JP |
3402 | adapter->stats.crcerrs += er32(CRCERRS); |
3403 | adapter->stats.gprc += er32(GPRC); | |
3404 | adapter->stats.gorcl += er32(GORCL); | |
3405 | adapter->stats.gorch += er32(GORCH); | |
3406 | adapter->stats.bprc += er32(BPRC); | |
3407 | adapter->stats.mprc += er32(MPRC); | |
3408 | adapter->stats.roc += er32(ROC); | |
3409 | ||
1532ecea JB |
3410 | adapter->stats.prc64 += er32(PRC64); |
3411 | adapter->stats.prc127 += er32(PRC127); | |
3412 | adapter->stats.prc255 += er32(PRC255); | |
3413 | adapter->stats.prc511 += er32(PRC511); | |
3414 | adapter->stats.prc1023 += er32(PRC1023); | |
3415 | adapter->stats.prc1522 += er32(PRC1522); | |
1dc32918 JP |
3416 | |
3417 | adapter->stats.symerrs += er32(SYMERRS); | |
3418 | adapter->stats.mpc += er32(MPC); | |
3419 | adapter->stats.scc += er32(SCC); | |
3420 | adapter->stats.ecol += er32(ECOL); | |
3421 | adapter->stats.mcc += er32(MCC); | |
3422 | adapter->stats.latecol += er32(LATECOL); | |
3423 | adapter->stats.dc += er32(DC); | |
3424 | adapter->stats.sec += er32(SEC); | |
3425 | adapter->stats.rlec += er32(RLEC); | |
3426 | adapter->stats.xonrxc += er32(XONRXC); | |
3427 | adapter->stats.xontxc += er32(XONTXC); | |
3428 | adapter->stats.xoffrxc += er32(XOFFRXC); | |
3429 | adapter->stats.xofftxc += er32(XOFFTXC); | |
3430 | adapter->stats.fcruc += er32(FCRUC); | |
3431 | adapter->stats.gptc += er32(GPTC); | |
3432 | adapter->stats.gotcl += er32(GOTCL); | |
3433 | adapter->stats.gotch += er32(GOTCH); | |
3434 | adapter->stats.rnbc += er32(RNBC); | |
3435 | adapter->stats.ruc += er32(RUC); | |
3436 | adapter->stats.rfc += er32(RFC); | |
3437 | adapter->stats.rjc += er32(RJC); | |
3438 | adapter->stats.torl += er32(TORL); | |
3439 | adapter->stats.torh += er32(TORH); | |
3440 | adapter->stats.totl += er32(TOTL); | |
3441 | adapter->stats.toth += er32(TOTH); | |
3442 | adapter->stats.tpr += er32(TPR); | |
3443 | ||
1532ecea JB |
3444 | adapter->stats.ptc64 += er32(PTC64); |
3445 | adapter->stats.ptc127 += er32(PTC127); | |
3446 | adapter->stats.ptc255 += er32(PTC255); | |
3447 | adapter->stats.ptc511 += er32(PTC511); | |
3448 | adapter->stats.ptc1023 += er32(PTC1023); | |
3449 | adapter->stats.ptc1522 += er32(PTC1522); | |
1dc32918 JP |
3450 | |
3451 | adapter->stats.mptc += er32(MPTC); | |
3452 | adapter->stats.bptc += er32(BPTC); | |
1da177e4 LT |
3453 | |
3454 | /* used for adaptive IFS */ | |
3455 | ||
1dc32918 | 3456 | hw->tx_packet_delta = er32(TPT); |
1da177e4 | 3457 | adapter->stats.tpt += hw->tx_packet_delta; |
1dc32918 | 3458 | hw->collision_delta = er32(COLC); |
1da177e4 LT |
3459 | adapter->stats.colc += hw->collision_delta; |
3460 | ||
96838a40 | 3461 | if (hw->mac_type >= e1000_82543) { |
1dc32918 JP |
3462 | adapter->stats.algnerrc += er32(ALGNERRC); |
3463 | adapter->stats.rxerrc += er32(RXERRC); | |
3464 | adapter->stats.tncrs += er32(TNCRS); | |
3465 | adapter->stats.cexterr += er32(CEXTERR); | |
3466 | adapter->stats.tsctc += er32(TSCTC); | |
3467 | adapter->stats.tsctfc += er32(TSCTFC); | |
1da177e4 LT |
3468 | } |
3469 | ||
3470 | /* Fill out the OS statistics structure */ | |
5fe31def AK |
3471 | netdev->stats.multicast = adapter->stats.mprc; |
3472 | netdev->stats.collisions = adapter->stats.colc; | |
1da177e4 LT |
3473 | |
3474 | /* Rx Errors */ | |
3475 | ||
87041639 JK |
3476 | /* RLEC on some newer hardware can be incorrect so build |
3477 | * our own version based on RUC and ROC */ | |
5fe31def | 3478 | netdev->stats.rx_errors = adapter->stats.rxerrc + |
1da177e4 | 3479 | adapter->stats.crcerrs + adapter->stats.algnerrc + |
87041639 JK |
3480 | adapter->stats.ruc + adapter->stats.roc + |
3481 | adapter->stats.cexterr; | |
49559854 | 3482 | adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc; |
5fe31def AK |
3483 | netdev->stats.rx_length_errors = adapter->stats.rlerrc; |
3484 | netdev->stats.rx_crc_errors = adapter->stats.crcerrs; | |
3485 | netdev->stats.rx_frame_errors = adapter->stats.algnerrc; | |
3486 | netdev->stats.rx_missed_errors = adapter->stats.mpc; | |
1da177e4 LT |
3487 | |
3488 | /* Tx Errors */ | |
49559854 | 3489 | adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol; |
5fe31def AK |
3490 | netdev->stats.tx_errors = adapter->stats.txerrc; |
3491 | netdev->stats.tx_aborted_errors = adapter->stats.ecol; | |
3492 | netdev->stats.tx_window_errors = adapter->stats.latecol; | |
3493 | netdev->stats.tx_carrier_errors = adapter->stats.tncrs; | |
1dc32918 | 3494 | if (hw->bad_tx_carr_stats_fd && |
167fb284 | 3495 | adapter->link_duplex == FULL_DUPLEX) { |
5fe31def | 3496 | netdev->stats.tx_carrier_errors = 0; |
167fb284 JG |
3497 | adapter->stats.tncrs = 0; |
3498 | } | |
1da177e4 LT |
3499 | |
3500 | /* Tx Dropped needs to be maintained elsewhere */ | |
3501 | ||
3502 | /* Phy Stats */ | |
96838a40 JB |
3503 | if (hw->media_type == e1000_media_type_copper) { |
3504 | if ((adapter->link_speed == SPEED_1000) && | |
1da177e4 LT |
3505 | (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
3506 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; | |
3507 | adapter->phy_stats.idle_errors += phy_tmp; | |
3508 | } | |
3509 | ||
96838a40 | 3510 | if ((hw->mac_type <= e1000_82546) && |
1da177e4 LT |
3511 | (hw->phy_type == e1000_phy_m88) && |
3512 | !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) | |
3513 | adapter->phy_stats.receive_errors += phy_tmp; | |
3514 | } | |
3515 | ||
15e376b4 | 3516 | /* Management Stats */ |
1dc32918 JP |
3517 | if (hw->has_smbus) { |
3518 | adapter->stats.mgptc += er32(MGTPTC); | |
3519 | adapter->stats.mgprc += er32(MGTPRC); | |
3520 | adapter->stats.mgpdc += er32(MGTPDC); | |
15e376b4 JG |
3521 | } |
3522 | ||
1da177e4 LT |
3523 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
3524 | } | |
9ac98284 | 3525 | |
1da177e4 LT |
3526 | /** |
3527 | * e1000_intr - Interrupt Handler | |
3528 | * @irq: interrupt number | |
3529 | * @data: pointer to a network interface device structure | |
1da177e4 LT |
3530 | **/ |
3531 | ||
64798845 | 3532 | static irqreturn_t e1000_intr(int irq, void *data) |
1da177e4 LT |
3533 | { |
3534 | struct net_device *netdev = data; | |
60490fe0 | 3535 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3536 | struct e1000_hw *hw = &adapter->hw; |
1532ecea | 3537 | u32 icr = er32(ICR); |
c3570acb | 3538 | |
4c11b8ad | 3539 | if (unlikely((!icr))) |
835bb129 JB |
3540 | return IRQ_NONE; /* Not our interrupt */ |
3541 | ||
4c11b8ad JB |
3542 | /* |
3543 | * we might have caused the interrupt, but the above | |
3544 | * read cleared it, and just in case the driver is | |
3545 | * down there is nothing to do so return handled | |
3546 | */ | |
3547 | if (unlikely(test_bit(__E1000_DOWN, &adapter->flags))) | |
3548 | return IRQ_HANDLED; | |
3549 | ||
96838a40 | 3550 | if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { |
1da177e4 | 3551 | hw->get_link_status = 1; |
1314bbf3 AK |
3552 | /* guard against interrupt when we're going down */ |
3553 | if (!test_bit(__E1000_DOWN, &adapter->flags)) | |
3554 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1da177e4 LT |
3555 | } |
3556 | ||
1532ecea JB |
3557 | /* disable interrupts, without the synchronize_irq bit */ |
3558 | ew32(IMC, ~0); | |
3559 | E1000_WRITE_FLUSH(); | |
3560 | ||
288379f0 | 3561 | if (likely(napi_schedule_prep(&adapter->napi))) { |
835bb129 JB |
3562 | adapter->total_tx_bytes = 0; |
3563 | adapter->total_tx_packets = 0; | |
3564 | adapter->total_rx_bytes = 0; | |
3565 | adapter->total_rx_packets = 0; | |
288379f0 | 3566 | __napi_schedule(&adapter->napi); |
a6c42322 | 3567 | } else { |
90fb5135 AK |
3568 | /* this really should not happen! if it does it is basically a |
3569 | * bug, but not a hard error, so enable ints and continue */ | |
a6c42322 JB |
3570 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
3571 | e1000_irq_enable(adapter); | |
3572 | } | |
1da177e4 | 3573 | |
1da177e4 LT |
3574 | return IRQ_HANDLED; |
3575 | } | |
3576 | ||
1da177e4 LT |
3577 | /** |
3578 | * e1000_clean - NAPI Rx polling callback | |
3579 | * @adapter: board private structure | |
3580 | **/ | |
64798845 | 3581 | static int e1000_clean(struct napi_struct *napi, int budget) |
1da177e4 | 3582 | { |
bea3348e | 3583 | struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); |
650b5a5c | 3584 | int tx_clean_complete = 0, work_done = 0; |
581d708e | 3585 | |
650b5a5c | 3586 | tx_clean_complete = e1000_clean_tx_irq(adapter, &adapter->tx_ring[0]); |
581d708e | 3587 | |
650b5a5c | 3588 | adapter->clean_rx(adapter, &adapter->rx_ring[0], &work_done, budget); |
581d708e | 3589 | |
650b5a5c | 3590 | if (!tx_clean_complete) |
d2c7ddd6 DM |
3591 | work_done = budget; |
3592 | ||
53e52c72 DM |
3593 | /* If budget not fully consumed, exit the polling mode */ |
3594 | if (work_done < budget) { | |
835bb129 JB |
3595 | if (likely(adapter->itr_setting & 3)) |
3596 | e1000_set_itr(adapter); | |
288379f0 | 3597 | napi_complete(napi); |
a6c42322 JB |
3598 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
3599 | e1000_irq_enable(adapter); | |
1da177e4 LT |
3600 | } |
3601 | ||
bea3348e | 3602 | return work_done; |
1da177e4 LT |
3603 | } |
3604 | ||
1da177e4 LT |
3605 | /** |
3606 | * e1000_clean_tx_irq - Reclaim resources after transmit completes | |
3607 | * @adapter: board private structure | |
3608 | **/ | |
64798845 JP |
3609 | static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
3610 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 3611 | { |
1dc32918 | 3612 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
3613 | struct net_device *netdev = adapter->netdev; |
3614 | struct e1000_tx_desc *tx_desc, *eop_desc; | |
3615 | struct e1000_buffer *buffer_info; | |
3616 | unsigned int i, eop; | |
2a1af5d7 | 3617 | unsigned int count = 0; |
835bb129 | 3618 | unsigned int total_tx_bytes=0, total_tx_packets=0; |
1da177e4 LT |
3619 | |
3620 | i = tx_ring->next_to_clean; | |
3621 | eop = tx_ring->buffer_info[i].next_to_watch; | |
3622 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
3623 | ||
ccfb342c AD |
3624 | while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && |
3625 | (count < tx_ring->count)) { | |
843f4267 | 3626 | bool cleaned = false; |
2d0bb1c1 | 3627 | rmb(); /* read buffer_info after eop_desc */ |
843f4267 | 3628 | for ( ; !cleaned; count++) { |
1da177e4 LT |
3629 | tx_desc = E1000_TX_DESC(*tx_ring, i); |
3630 | buffer_info = &tx_ring->buffer_info[i]; | |
3631 | cleaned = (i == eop); | |
3632 | ||
835bb129 | 3633 | if (cleaned) { |
31c15a2f DN |
3634 | total_tx_packets += buffer_info->segs; |
3635 | total_tx_bytes += buffer_info->bytecount; | |
835bb129 | 3636 | } |
fd803241 | 3637 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
a9ebadd6 | 3638 | tx_desc->upper.data = 0; |
1da177e4 | 3639 | |
96838a40 | 3640 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 | 3641 | } |
581d708e | 3642 | |
1da177e4 LT |
3643 | eop = tx_ring->buffer_info[i].next_to_watch; |
3644 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
3645 | } | |
3646 | ||
3647 | tx_ring->next_to_clean = i; | |
3648 | ||
77b2aad5 | 3649 | #define TX_WAKE_THRESHOLD 32 |
843f4267 | 3650 | if (unlikely(count && netif_carrier_ok(netdev) && |
65c7973f JB |
3651 | E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) { |
3652 | /* Make sure that anybody stopping the queue after this | |
3653 | * sees the new next_to_clean. | |
3654 | */ | |
3655 | smp_mb(); | |
cdd7549e JB |
3656 | |
3657 | if (netif_queue_stopped(netdev) && | |
3658 | !(test_bit(__E1000_DOWN, &adapter->flags))) { | |
77b2aad5 | 3659 | netif_wake_queue(netdev); |
fcfb1224 JB |
3660 | ++adapter->restart_queue; |
3661 | } | |
77b2aad5 | 3662 | } |
2648345f | 3663 | |
581d708e | 3664 | if (adapter->detect_tx_hung) { |
2648345f | 3665 | /* Detect a transmit hang in hardware, this serializes the |
1da177e4 | 3666 | * check with the clearing of time_stamp and movement of i */ |
c3033b01 | 3667 | adapter->detect_tx_hung = false; |
cdd7549e JB |
3668 | if (tx_ring->buffer_info[eop].time_stamp && |
3669 | time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + | |
8e95a202 JP |
3670 | (adapter->tx_timeout_factor * HZ)) && |
3671 | !(er32(STATUS) & E1000_STATUS_TXOFF)) { | |
70b8f1e1 MC |
3672 | |
3673 | /* detected Tx unit hang */ | |
feb8f478 | 3674 | e_err(drv, "Detected Tx Unit Hang\n" |
675ad473 ET |
3675 | " Tx Queue <%lu>\n" |
3676 | " TDH <%x>\n" | |
3677 | " TDT <%x>\n" | |
3678 | " next_to_use <%x>\n" | |
3679 | " next_to_clean <%x>\n" | |
3680 | "buffer_info[next_to_clean]\n" | |
3681 | " time_stamp <%lx>\n" | |
3682 | " next_to_watch <%x>\n" | |
3683 | " jiffies <%lx>\n" | |
3684 | " next_to_watch.status <%x>\n", | |
7bfa4816 JK |
3685 | (unsigned long)((tx_ring - adapter->tx_ring) / |
3686 | sizeof(struct e1000_tx_ring)), | |
1dc32918 JP |
3687 | readl(hw->hw_addr + tx_ring->tdh), |
3688 | readl(hw->hw_addr + tx_ring->tdt), | |
70b8f1e1 | 3689 | tx_ring->next_to_use, |
392137fa | 3690 | tx_ring->next_to_clean, |
cdd7549e | 3691 | tx_ring->buffer_info[eop].time_stamp, |
70b8f1e1 MC |
3692 | eop, |
3693 | jiffies, | |
3694 | eop_desc->upper.fields.status); | |
1da177e4 | 3695 | netif_stop_queue(netdev); |
70b8f1e1 | 3696 | } |
1da177e4 | 3697 | } |
835bb129 JB |
3698 | adapter->total_tx_bytes += total_tx_bytes; |
3699 | adapter->total_tx_packets += total_tx_packets; | |
5fe31def AK |
3700 | netdev->stats.tx_bytes += total_tx_bytes; |
3701 | netdev->stats.tx_packets += total_tx_packets; | |
807540ba | 3702 | return count < tx_ring->count; |
1da177e4 LT |
3703 | } |
3704 | ||
3705 | /** | |
3706 | * e1000_rx_checksum - Receive Checksum Offload for 82543 | |
2d7edb92 MC |
3707 | * @adapter: board private structure |
3708 | * @status_err: receive descriptor status and error fields | |
3709 | * @csum: receive descriptor csum field | |
3710 | * @sk_buff: socket buffer with received data | |
1da177e4 LT |
3711 | **/ |
3712 | ||
64798845 JP |
3713 | static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, |
3714 | u32 csum, struct sk_buff *skb) | |
1da177e4 | 3715 | { |
1dc32918 | 3716 | struct e1000_hw *hw = &adapter->hw; |
406874a7 JP |
3717 | u16 status = (u16)status_err; |
3718 | u8 errors = (u8)(status_err >> 24); | |
bc8acf2c ED |
3719 | |
3720 | skb_checksum_none_assert(skb); | |
2d7edb92 | 3721 | |
1da177e4 | 3722 | /* 82543 or newer only */ |
1dc32918 | 3723 | if (unlikely(hw->mac_type < e1000_82543)) return; |
1da177e4 | 3724 | /* Ignore Checksum bit is set */ |
96838a40 | 3725 | if (unlikely(status & E1000_RXD_STAT_IXSM)) return; |
2d7edb92 | 3726 | /* TCP/UDP checksum error bit is set */ |
96838a40 | 3727 | if (unlikely(errors & E1000_RXD_ERR_TCPE)) { |
1da177e4 | 3728 | /* let the stack verify checksum errors */ |
1da177e4 | 3729 | adapter->hw_csum_err++; |
2d7edb92 MC |
3730 | return; |
3731 | } | |
3732 | /* TCP/UDP Checksum has not been calculated */ | |
1532ecea JB |
3733 | if (!(status & E1000_RXD_STAT_TCPCS)) |
3734 | return; | |
3735 | ||
2d7edb92 MC |
3736 | /* It must be a TCP or UDP packet with a valid checksum */ |
3737 | if (likely(status & E1000_RXD_STAT_TCPCS)) { | |
1da177e4 LT |
3738 | /* TCP checksum is good */ |
3739 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1da177e4 | 3740 | } |
2d7edb92 | 3741 | adapter->hw_csum_good++; |
1da177e4 LT |
3742 | } |
3743 | ||
edbbb3ca JB |
3744 | /** |
3745 | * e1000_consume_page - helper function | |
3746 | **/ | |
3747 | static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, | |
3748 | u16 length) | |
3749 | { | |
3750 | bi->page = NULL; | |
3751 | skb->len += length; | |
3752 | skb->data_len += length; | |
3753 | skb->truesize += length; | |
3754 | } | |
3755 | ||
3756 | /** | |
3757 | * e1000_receive_skb - helper function to handle rx indications | |
3758 | * @adapter: board private structure | |
3759 | * @status: descriptor status field as written by hardware | |
3760 | * @vlan: descriptor vlan field as written by hardware (no le/be conversion) | |
3761 | * @skb: pointer to sk_buff to be indicated to stack | |
3762 | */ | |
3763 | static void e1000_receive_skb(struct e1000_adapter *adapter, u8 status, | |
3764 | __le16 vlan, struct sk_buff *skb) | |
3765 | { | |
6a08d194 JB |
3766 | skb->protocol = eth_type_trans(skb, adapter->netdev); |
3767 | ||
5622e404 JP |
3768 | if (status & E1000_RXD_STAT_VP) { |
3769 | u16 vid = le16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK; | |
3770 | ||
3771 | __vlan_hwaccel_put_tag(skb, vid); | |
3772 | } | |
3773 | napi_gro_receive(&adapter->napi, skb); | |
edbbb3ca JB |
3774 | } |
3775 | ||
3776 | /** | |
3777 | * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy | |
3778 | * @adapter: board private structure | |
3779 | * @rx_ring: ring to clean | |
3780 | * @work_done: amount of napi work completed this call | |
3781 | * @work_to_do: max amount of work allowed for this call to do | |
3782 | * | |
3783 | * the return value indicates whether actual cleaning was done, there | |
3784 | * is no guarantee that everything was cleaned | |
3785 | */ | |
3786 | static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, | |
3787 | struct e1000_rx_ring *rx_ring, | |
3788 | int *work_done, int work_to_do) | |
3789 | { | |
3790 | struct e1000_hw *hw = &adapter->hw; | |
3791 | struct net_device *netdev = adapter->netdev; | |
3792 | struct pci_dev *pdev = adapter->pdev; | |
3793 | struct e1000_rx_desc *rx_desc, *next_rxd; | |
3794 | struct e1000_buffer *buffer_info, *next_buffer; | |
3795 | unsigned long irq_flags; | |
3796 | u32 length; | |
3797 | unsigned int i; | |
3798 | int cleaned_count = 0; | |
3799 | bool cleaned = false; | |
3800 | unsigned int total_rx_bytes=0, total_rx_packets=0; | |
3801 | ||
3802 | i = rx_ring->next_to_clean; | |
3803 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
3804 | buffer_info = &rx_ring->buffer_info[i]; | |
3805 | ||
3806 | while (rx_desc->status & E1000_RXD_STAT_DD) { | |
3807 | struct sk_buff *skb; | |
3808 | u8 status; | |
3809 | ||
3810 | if (*work_done >= work_to_do) | |
3811 | break; | |
3812 | (*work_done)++; | |
2d0bb1c1 | 3813 | rmb(); /* read descriptor and rx_buffer_info after status DD */ |
edbbb3ca JB |
3814 | |
3815 | status = rx_desc->status; | |
3816 | skb = buffer_info->skb; | |
3817 | buffer_info->skb = NULL; | |
3818 | ||
3819 | if (++i == rx_ring->count) i = 0; | |
3820 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
3821 | prefetch(next_rxd); | |
3822 | ||
3823 | next_buffer = &rx_ring->buffer_info[i]; | |
3824 | ||
3825 | cleaned = true; | |
3826 | cleaned_count++; | |
b16f53be NN |
3827 | dma_unmap_page(&pdev->dev, buffer_info->dma, |
3828 | buffer_info->length, DMA_FROM_DEVICE); | |
edbbb3ca JB |
3829 | buffer_info->dma = 0; |
3830 | ||
3831 | length = le16_to_cpu(rx_desc->length); | |
3832 | ||
3833 | /* errors is only valid for DD + EOP descriptors */ | |
3834 | if (unlikely((status & E1000_RXD_STAT_EOP) && | |
3835 | (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) { | |
3836 | u8 last_byte = *(skb->data + length - 1); | |
3837 | if (TBI_ACCEPT(hw, status, rx_desc->errors, length, | |
3838 | last_byte)) { | |
3839 | spin_lock_irqsave(&adapter->stats_lock, | |
3840 | irq_flags); | |
3841 | e1000_tbi_adjust_stats(hw, &adapter->stats, | |
3842 | length, skb->data); | |
3843 | spin_unlock_irqrestore(&adapter->stats_lock, | |
3844 | irq_flags); | |
3845 | length--; | |
3846 | } else { | |
3847 | /* recycle both page and skb */ | |
3848 | buffer_info->skb = skb; | |
3849 | /* an error means any chain goes out the window | |
3850 | * too */ | |
3851 | if (rx_ring->rx_skb_top) | |
3852 | dev_kfree_skb(rx_ring->rx_skb_top); | |
3853 | rx_ring->rx_skb_top = NULL; | |
3854 | goto next_desc; | |
3855 | } | |
3856 | } | |
3857 | ||
3858 | #define rxtop rx_ring->rx_skb_top | |
3859 | if (!(status & E1000_RXD_STAT_EOP)) { | |
3860 | /* this descriptor is only the beginning (or middle) */ | |
3861 | if (!rxtop) { | |
3862 | /* this is the beginning of a chain */ | |
3863 | rxtop = skb; | |
3864 | skb_fill_page_desc(rxtop, 0, buffer_info->page, | |
3865 | 0, length); | |
3866 | } else { | |
3867 | /* this is the middle of a chain */ | |
3868 | skb_fill_page_desc(rxtop, | |
3869 | skb_shinfo(rxtop)->nr_frags, | |
3870 | buffer_info->page, 0, length); | |
3871 | /* re-use the skb, only consumed the page */ | |
3872 | buffer_info->skb = skb; | |
3873 | } | |
3874 | e1000_consume_page(buffer_info, rxtop, length); | |
3875 | goto next_desc; | |
3876 | } else { | |
3877 | if (rxtop) { | |
3878 | /* end of the chain */ | |
3879 | skb_fill_page_desc(rxtop, | |
3880 | skb_shinfo(rxtop)->nr_frags, | |
3881 | buffer_info->page, 0, length); | |
3882 | /* re-use the current skb, we only consumed the | |
3883 | * page */ | |
3884 | buffer_info->skb = skb; | |
3885 | skb = rxtop; | |
3886 | rxtop = NULL; | |
3887 | e1000_consume_page(buffer_info, skb, length); | |
3888 | } else { | |
3889 | /* no chain, got EOP, this buf is the packet | |
3890 | * copybreak to save the put_page/alloc_page */ | |
3891 | if (length <= copybreak && | |
3892 | skb_tailroom(skb) >= length) { | |
3893 | u8 *vaddr; | |
3894 | vaddr = kmap_atomic(buffer_info->page, | |
3895 | KM_SKB_DATA_SOFTIRQ); | |
3896 | memcpy(skb_tail_pointer(skb), vaddr, length); | |
3897 | kunmap_atomic(vaddr, | |
3898 | KM_SKB_DATA_SOFTIRQ); | |
3899 | /* re-use the page, so don't erase | |
3900 | * buffer_info->page */ | |
3901 | skb_put(skb, length); | |
3902 | } else { | |
3903 | skb_fill_page_desc(skb, 0, | |
3904 | buffer_info->page, 0, | |
3905 | length); | |
3906 | e1000_consume_page(buffer_info, skb, | |
3907 | length); | |
3908 | } | |
3909 | } | |
3910 | } | |
3911 | ||
3912 | /* Receive Checksum Offload XXX recompute due to CRC strip? */ | |
3913 | e1000_rx_checksum(adapter, | |
3914 | (u32)(status) | | |
3915 | ((u32)(rx_desc->errors) << 24), | |
3916 | le16_to_cpu(rx_desc->csum), skb); | |
3917 | ||
3918 | pskb_trim(skb, skb->len - 4); | |
3919 | ||
3920 | /* probably a little skewed due to removing CRC */ | |
3921 | total_rx_bytes += skb->len; | |
3922 | total_rx_packets++; | |
3923 | ||
3924 | /* eth type trans needs skb->data to point to something */ | |
3925 | if (!pskb_may_pull(skb, ETH_HLEN)) { | |
feb8f478 | 3926 | e_err(drv, "pskb_may_pull failed.\n"); |
edbbb3ca JB |
3927 | dev_kfree_skb(skb); |
3928 | goto next_desc; | |
3929 | } | |
3930 | ||
edbbb3ca JB |
3931 | e1000_receive_skb(adapter, status, rx_desc->special, skb); |
3932 | ||
3933 | next_desc: | |
3934 | rx_desc->status = 0; | |
3935 | ||
3936 | /* return some buffers to hardware, one at a time is too slow */ | |
3937 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
3938 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
3939 | cleaned_count = 0; | |
3940 | } | |
3941 | ||
3942 | /* use prefetched values */ | |
3943 | rx_desc = next_rxd; | |
3944 | buffer_info = next_buffer; | |
3945 | } | |
3946 | rx_ring->next_to_clean = i; | |
3947 | ||
3948 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
3949 | if (cleaned_count) | |
3950 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
3951 | ||
3952 | adapter->total_rx_packets += total_rx_packets; | |
3953 | adapter->total_rx_bytes += total_rx_bytes; | |
5fe31def AK |
3954 | netdev->stats.rx_bytes += total_rx_bytes; |
3955 | netdev->stats.rx_packets += total_rx_packets; | |
edbbb3ca JB |
3956 | return cleaned; |
3957 | } | |
3958 | ||
57bf6eef JP |
3959 | /* |
3960 | * this should improve performance for small packets with large amounts | |
3961 | * of reassembly being done in the stack | |
3962 | */ | |
3963 | static void e1000_check_copybreak(struct net_device *netdev, | |
3964 | struct e1000_buffer *buffer_info, | |
3965 | u32 length, struct sk_buff **skb) | |
3966 | { | |
3967 | struct sk_buff *new_skb; | |
3968 | ||
3969 | if (length > copybreak) | |
3970 | return; | |
3971 | ||
3972 | new_skb = netdev_alloc_skb_ip_align(netdev, length); | |
3973 | if (!new_skb) | |
3974 | return; | |
3975 | ||
3976 | skb_copy_to_linear_data_offset(new_skb, -NET_IP_ALIGN, | |
3977 | (*skb)->data - NET_IP_ALIGN, | |
3978 | length + NET_IP_ALIGN); | |
3979 | /* save the skb in buffer_info as good */ | |
3980 | buffer_info->skb = *skb; | |
3981 | *skb = new_skb; | |
3982 | } | |
3983 | ||
1da177e4 | 3984 | /** |
2d7edb92 | 3985 | * e1000_clean_rx_irq - Send received data up the network stack; legacy |
1da177e4 | 3986 | * @adapter: board private structure |
edbbb3ca JB |
3987 | * @rx_ring: ring to clean |
3988 | * @work_done: amount of napi work completed this call | |
3989 | * @work_to_do: max amount of work allowed for this call to do | |
3990 | */ | |
64798845 JP |
3991 | static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
3992 | struct e1000_rx_ring *rx_ring, | |
3993 | int *work_done, int work_to_do) | |
1da177e4 | 3994 | { |
1dc32918 | 3995 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
3996 | struct net_device *netdev = adapter->netdev; |
3997 | struct pci_dev *pdev = adapter->pdev; | |
86c3d59f JB |
3998 | struct e1000_rx_desc *rx_desc, *next_rxd; |
3999 | struct e1000_buffer *buffer_info, *next_buffer; | |
1da177e4 | 4000 | unsigned long flags; |
406874a7 | 4001 | u32 length; |
1da177e4 | 4002 | unsigned int i; |
72d64a43 | 4003 | int cleaned_count = 0; |
c3033b01 | 4004 | bool cleaned = false; |
835bb129 | 4005 | unsigned int total_rx_bytes=0, total_rx_packets=0; |
1da177e4 LT |
4006 | |
4007 | i = rx_ring->next_to_clean; | |
4008 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
b92ff8ee | 4009 | buffer_info = &rx_ring->buffer_info[i]; |
1da177e4 | 4010 | |
b92ff8ee | 4011 | while (rx_desc->status & E1000_RXD_STAT_DD) { |
24f476ee | 4012 | struct sk_buff *skb; |
a292ca6e | 4013 | u8 status; |
90fb5135 | 4014 | |
96838a40 | 4015 | if (*work_done >= work_to_do) |
1da177e4 LT |
4016 | break; |
4017 | (*work_done)++; | |
2d0bb1c1 | 4018 | rmb(); /* read descriptor and rx_buffer_info after status DD */ |
c3570acb | 4019 | |
a292ca6e | 4020 | status = rx_desc->status; |
b92ff8ee | 4021 | skb = buffer_info->skb; |
86c3d59f JB |
4022 | buffer_info->skb = NULL; |
4023 | ||
30320be8 JK |
4024 | prefetch(skb->data - NET_IP_ALIGN); |
4025 | ||
86c3d59f JB |
4026 | if (++i == rx_ring->count) i = 0; |
4027 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
30320be8 JK |
4028 | prefetch(next_rxd); |
4029 | ||
86c3d59f | 4030 | next_buffer = &rx_ring->buffer_info[i]; |
86c3d59f | 4031 | |
c3033b01 | 4032 | cleaned = true; |
72d64a43 | 4033 | cleaned_count++; |
b16f53be NN |
4034 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
4035 | buffer_info->length, DMA_FROM_DEVICE); | |
679be3ba | 4036 | buffer_info->dma = 0; |
1da177e4 | 4037 | |
1da177e4 | 4038 | length = le16_to_cpu(rx_desc->length); |
ea30e119 | 4039 | /* !EOP means multiple descriptors were used to store a single |
40a14dea JB |
4040 | * packet, if thats the case we need to toss it. In fact, we |
4041 | * to toss every packet with the EOP bit clear and the next | |
4042 | * frame that _does_ have the EOP bit set, as it is by | |
4043 | * definition only a frame fragment | |
4044 | */ | |
4045 | if (unlikely(!(status & E1000_RXD_STAT_EOP))) | |
4046 | adapter->discarding = true; | |
4047 | ||
4048 | if (adapter->discarding) { | |
a1415ee6 | 4049 | /* All receives must fit into a single buffer */ |
feb8f478 | 4050 | e_dbg("Receive packet consumed multiple buffers\n"); |
864c4e45 | 4051 | /* recycle */ |
8fc897b0 | 4052 | buffer_info->skb = skb; |
40a14dea JB |
4053 | if (status & E1000_RXD_STAT_EOP) |
4054 | adapter->discarding = false; | |
1da177e4 LT |
4055 | goto next_desc; |
4056 | } | |
4057 | ||
96838a40 | 4058 | if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { |
edbbb3ca | 4059 | u8 last_byte = *(skb->data + length - 1); |
1dc32918 JP |
4060 | if (TBI_ACCEPT(hw, status, rx_desc->errors, length, |
4061 | last_byte)) { | |
1da177e4 | 4062 | spin_lock_irqsave(&adapter->stats_lock, flags); |
1dc32918 | 4063 | e1000_tbi_adjust_stats(hw, &adapter->stats, |
1da177e4 LT |
4064 | length, skb->data); |
4065 | spin_unlock_irqrestore(&adapter->stats_lock, | |
4066 | flags); | |
4067 | length--; | |
4068 | } else { | |
9e2feace AK |
4069 | /* recycle */ |
4070 | buffer_info->skb = skb; | |
1da177e4 LT |
4071 | goto next_desc; |
4072 | } | |
1cb5821f | 4073 | } |
1da177e4 | 4074 | |
d2a1e213 JB |
4075 | /* adjust length to remove Ethernet CRC, this must be |
4076 | * done after the TBI_ACCEPT workaround above */ | |
4077 | length -= 4; | |
4078 | ||
835bb129 JB |
4079 | /* probably a little skewed due to removing CRC */ |
4080 | total_rx_bytes += length; | |
4081 | total_rx_packets++; | |
4082 | ||
57bf6eef JP |
4083 | e1000_check_copybreak(netdev, buffer_info, length, &skb); |
4084 | ||
996695de | 4085 | skb_put(skb, length); |
1da177e4 LT |
4086 | |
4087 | /* Receive Checksum Offload */ | |
a292ca6e | 4088 | e1000_rx_checksum(adapter, |
406874a7 JP |
4089 | (u32)(status) | |
4090 | ((u32)(rx_desc->errors) << 24), | |
c3d7a3a4 | 4091 | le16_to_cpu(rx_desc->csum), skb); |
96838a40 | 4092 | |
edbbb3ca | 4093 | e1000_receive_skb(adapter, status, rx_desc->special, skb); |
c3570acb | 4094 | |
1da177e4 LT |
4095 | next_desc: |
4096 | rx_desc->status = 0; | |
1da177e4 | 4097 | |
72d64a43 JK |
4098 | /* return some buffers to hardware, one at a time is too slow */ |
4099 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
4100 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
4101 | cleaned_count = 0; | |
4102 | } | |
4103 | ||
30320be8 | 4104 | /* use prefetched values */ |
86c3d59f JB |
4105 | rx_desc = next_rxd; |
4106 | buffer_info = next_buffer; | |
1da177e4 | 4107 | } |
1da177e4 | 4108 | rx_ring->next_to_clean = i; |
72d64a43 JK |
4109 | |
4110 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
4111 | if (cleaned_count) | |
4112 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
2d7edb92 | 4113 | |
835bb129 JB |
4114 | adapter->total_rx_packets += total_rx_packets; |
4115 | adapter->total_rx_bytes += total_rx_bytes; | |
5fe31def AK |
4116 | netdev->stats.rx_bytes += total_rx_bytes; |
4117 | netdev->stats.rx_packets += total_rx_packets; | |
2d7edb92 MC |
4118 | return cleaned; |
4119 | } | |
4120 | ||
edbbb3ca JB |
4121 | /** |
4122 | * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers | |
4123 | * @adapter: address of board private structure | |
4124 | * @rx_ring: pointer to receive ring structure | |
4125 | * @cleaned_count: number of buffers to allocate this pass | |
4126 | **/ | |
4127 | ||
4128 | static void | |
4129 | e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, | |
4130 | struct e1000_rx_ring *rx_ring, int cleaned_count) | |
4131 | { | |
4132 | struct net_device *netdev = adapter->netdev; | |
4133 | struct pci_dev *pdev = adapter->pdev; | |
4134 | struct e1000_rx_desc *rx_desc; | |
4135 | struct e1000_buffer *buffer_info; | |
4136 | struct sk_buff *skb; | |
4137 | unsigned int i; | |
89d71a66 | 4138 | unsigned int bufsz = 256 - 16 /*for skb_reserve */ ; |
edbbb3ca JB |
4139 | |
4140 | i = rx_ring->next_to_use; | |
4141 | buffer_info = &rx_ring->buffer_info[i]; | |
4142 | ||
4143 | while (cleaned_count--) { | |
4144 | skb = buffer_info->skb; | |
4145 | if (skb) { | |
4146 | skb_trim(skb, 0); | |
4147 | goto check_page; | |
4148 | } | |
4149 | ||
89d71a66 | 4150 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
edbbb3ca JB |
4151 | if (unlikely(!skb)) { |
4152 | /* Better luck next round */ | |
4153 | adapter->alloc_rx_buff_failed++; | |
4154 | break; | |
4155 | } | |
4156 | ||
4157 | /* Fix for errata 23, can't cross 64kB boundary */ | |
4158 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { | |
4159 | struct sk_buff *oldskb = skb; | |
feb8f478 ET |
4160 | e_err(rx_err, "skb align check failed: %u bytes at " |
4161 | "%p\n", bufsz, skb->data); | |
edbbb3ca | 4162 | /* Try again, without freeing the previous */ |
89d71a66 | 4163 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
edbbb3ca JB |
4164 | /* Failed allocation, critical failure */ |
4165 | if (!skb) { | |
4166 | dev_kfree_skb(oldskb); | |
4167 | adapter->alloc_rx_buff_failed++; | |
4168 | break; | |
4169 | } | |
4170 | ||
4171 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { | |
4172 | /* give up */ | |
4173 | dev_kfree_skb(skb); | |
4174 | dev_kfree_skb(oldskb); | |
4175 | break; /* while (cleaned_count--) */ | |
4176 | } | |
4177 | ||
4178 | /* Use new allocation */ | |
4179 | dev_kfree_skb(oldskb); | |
4180 | } | |
edbbb3ca JB |
4181 | buffer_info->skb = skb; |
4182 | buffer_info->length = adapter->rx_buffer_len; | |
4183 | check_page: | |
4184 | /* allocate a new page if necessary */ | |
4185 | if (!buffer_info->page) { | |
4186 | buffer_info->page = alloc_page(GFP_ATOMIC); | |
4187 | if (unlikely(!buffer_info->page)) { | |
4188 | adapter->alloc_rx_buff_failed++; | |
4189 | break; | |
4190 | } | |
4191 | } | |
4192 | ||
b5abb028 | 4193 | if (!buffer_info->dma) { |
b16f53be | 4194 | buffer_info->dma = dma_map_page(&pdev->dev, |
edbbb3ca | 4195 | buffer_info->page, 0, |
b16f53be NN |
4196 | buffer_info->length, |
4197 | DMA_FROM_DEVICE); | |
4198 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { | |
b5abb028 AB |
4199 | put_page(buffer_info->page); |
4200 | dev_kfree_skb(skb); | |
4201 | buffer_info->page = NULL; | |
4202 | buffer_info->skb = NULL; | |
4203 | buffer_info->dma = 0; | |
4204 | adapter->alloc_rx_buff_failed++; | |
4205 | break; /* while !buffer_info->skb */ | |
4206 | } | |
4207 | } | |
edbbb3ca JB |
4208 | |
4209 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
4210 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
4211 | ||
4212 | if (unlikely(++i == rx_ring->count)) | |
4213 | i = 0; | |
4214 | buffer_info = &rx_ring->buffer_info[i]; | |
4215 | } | |
4216 | ||
4217 | if (likely(rx_ring->next_to_use != i)) { | |
4218 | rx_ring->next_to_use = i; | |
4219 | if (unlikely(i-- == 0)) | |
4220 | i = (rx_ring->count - 1); | |
4221 | ||
4222 | /* Force memory writes to complete before letting h/w | |
4223 | * know there are new descriptors to fetch. (Only | |
4224 | * applicable for weak-ordered memory model archs, | |
4225 | * such as IA-64). */ | |
4226 | wmb(); | |
4227 | writel(i, adapter->hw.hw_addr + rx_ring->rdt); | |
4228 | } | |
4229 | } | |
4230 | ||
1da177e4 | 4231 | /** |
2d7edb92 | 4232 | * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
1da177e4 LT |
4233 | * @adapter: address of board private structure |
4234 | **/ | |
4235 | ||
64798845 JP |
4236 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
4237 | struct e1000_rx_ring *rx_ring, | |
4238 | int cleaned_count) | |
1da177e4 | 4239 | { |
1dc32918 | 4240 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
4241 | struct net_device *netdev = adapter->netdev; |
4242 | struct pci_dev *pdev = adapter->pdev; | |
4243 | struct e1000_rx_desc *rx_desc; | |
4244 | struct e1000_buffer *buffer_info; | |
4245 | struct sk_buff *skb; | |
2648345f | 4246 | unsigned int i; |
89d71a66 | 4247 | unsigned int bufsz = adapter->rx_buffer_len; |
1da177e4 LT |
4248 | |
4249 | i = rx_ring->next_to_use; | |
4250 | buffer_info = &rx_ring->buffer_info[i]; | |
4251 | ||
a292ca6e | 4252 | while (cleaned_count--) { |
ca6f7224 CH |
4253 | skb = buffer_info->skb; |
4254 | if (skb) { | |
a292ca6e JK |
4255 | skb_trim(skb, 0); |
4256 | goto map_skb; | |
4257 | } | |
4258 | ||
89d71a66 | 4259 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
96838a40 | 4260 | if (unlikely(!skb)) { |
1da177e4 | 4261 | /* Better luck next round */ |
72d64a43 | 4262 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
4263 | break; |
4264 | } | |
4265 | ||
2648345f | 4266 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
4267 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
4268 | struct sk_buff *oldskb = skb; | |
feb8f478 ET |
4269 | e_err(rx_err, "skb align check failed: %u bytes at " |
4270 | "%p\n", bufsz, skb->data); | |
2648345f | 4271 | /* Try again, without freeing the previous */ |
89d71a66 | 4272 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
2648345f | 4273 | /* Failed allocation, critical failure */ |
1da177e4 LT |
4274 | if (!skb) { |
4275 | dev_kfree_skb(oldskb); | |
edbbb3ca | 4276 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
4277 | break; |
4278 | } | |
2648345f | 4279 | |
1da177e4 LT |
4280 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
4281 | /* give up */ | |
4282 | dev_kfree_skb(skb); | |
4283 | dev_kfree_skb(oldskb); | |
edbbb3ca | 4284 | adapter->alloc_rx_buff_failed++; |
1da177e4 | 4285 | break; /* while !buffer_info->skb */ |
1da177e4 | 4286 | } |
ca6f7224 CH |
4287 | |
4288 | /* Use new allocation */ | |
4289 | dev_kfree_skb(oldskb); | |
1da177e4 | 4290 | } |
1da177e4 LT |
4291 | buffer_info->skb = skb; |
4292 | buffer_info->length = adapter->rx_buffer_len; | |
a292ca6e | 4293 | map_skb: |
b16f53be | 4294 | buffer_info->dma = dma_map_single(&pdev->dev, |
1da177e4 | 4295 | skb->data, |
edbbb3ca | 4296 | buffer_info->length, |
b16f53be NN |
4297 | DMA_FROM_DEVICE); |
4298 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { | |
b5abb028 AB |
4299 | dev_kfree_skb(skb); |
4300 | buffer_info->skb = NULL; | |
4301 | buffer_info->dma = 0; | |
4302 | adapter->alloc_rx_buff_failed++; | |
4303 | break; /* while !buffer_info->skb */ | |
4304 | } | |
1da177e4 | 4305 | |
edbbb3ca JB |
4306 | /* |
4307 | * XXX if it was allocated cleanly it will never map to a | |
4308 | * boundary crossing | |
4309 | */ | |
4310 | ||
2648345f MC |
4311 | /* Fix for errata 23, can't cross 64kB boundary */ |
4312 | if (!e1000_check_64k_bound(adapter, | |
4313 | (void *)(unsigned long)buffer_info->dma, | |
4314 | adapter->rx_buffer_len)) { | |
feb8f478 ET |
4315 | e_err(rx_err, "dma align check failed: %u bytes at " |
4316 | "%p\n", adapter->rx_buffer_len, | |
675ad473 | 4317 | (void *)(unsigned long)buffer_info->dma); |
1da177e4 LT |
4318 | dev_kfree_skb(skb); |
4319 | buffer_info->skb = NULL; | |
4320 | ||
b16f53be | 4321 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
1da177e4 | 4322 | adapter->rx_buffer_len, |
b16f53be | 4323 | DMA_FROM_DEVICE); |
679be3ba | 4324 | buffer_info->dma = 0; |
1da177e4 | 4325 | |
edbbb3ca | 4326 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
4327 | break; /* while !buffer_info->skb */ |
4328 | } | |
1da177e4 LT |
4329 | rx_desc = E1000_RX_DESC(*rx_ring, i); |
4330 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
4331 | ||
96838a40 JB |
4332 | if (unlikely(++i == rx_ring->count)) |
4333 | i = 0; | |
1da177e4 LT |
4334 | buffer_info = &rx_ring->buffer_info[i]; |
4335 | } | |
4336 | ||
b92ff8ee JB |
4337 | if (likely(rx_ring->next_to_use != i)) { |
4338 | rx_ring->next_to_use = i; | |
4339 | if (unlikely(i-- == 0)) | |
4340 | i = (rx_ring->count - 1); | |
4341 | ||
4342 | /* Force memory writes to complete before letting h/w | |
4343 | * know there are new descriptors to fetch. (Only | |
4344 | * applicable for weak-ordered memory model archs, | |
4345 | * such as IA-64). */ | |
4346 | wmb(); | |
1dc32918 | 4347 | writel(i, hw->hw_addr + rx_ring->rdt); |
b92ff8ee | 4348 | } |
1da177e4 LT |
4349 | } |
4350 | ||
4351 | /** | |
4352 | * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. | |
4353 | * @adapter: | |
4354 | **/ | |
4355 | ||
64798845 | 4356 | static void e1000_smartspeed(struct e1000_adapter *adapter) |
1da177e4 | 4357 | { |
1dc32918 | 4358 | struct e1000_hw *hw = &adapter->hw; |
406874a7 JP |
4359 | u16 phy_status; |
4360 | u16 phy_ctrl; | |
1da177e4 | 4361 | |
1dc32918 JP |
4362 | if ((hw->phy_type != e1000_phy_igp) || !hw->autoneg || |
4363 | !(hw->autoneg_advertised & ADVERTISE_1000_FULL)) | |
1da177e4 LT |
4364 | return; |
4365 | ||
96838a40 | 4366 | if (adapter->smartspeed == 0) { |
1da177e4 LT |
4367 | /* If Master/Slave config fault is asserted twice, |
4368 | * we assume back-to-back */ | |
1dc32918 | 4369 | e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); |
96838a40 | 4370 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1dc32918 | 4371 | e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); |
96838a40 | 4372 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1dc32918 | 4373 | e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl); |
96838a40 | 4374 | if (phy_ctrl & CR_1000T_MS_ENABLE) { |
1da177e4 | 4375 | phy_ctrl &= ~CR_1000T_MS_ENABLE; |
1dc32918 | 4376 | e1000_write_phy_reg(hw, PHY_1000T_CTRL, |
1da177e4 LT |
4377 | phy_ctrl); |
4378 | adapter->smartspeed++; | |
1dc32918 JP |
4379 | if (!e1000_phy_setup_autoneg(hw) && |
4380 | !e1000_read_phy_reg(hw, PHY_CTRL, | |
1da177e4 LT |
4381 | &phy_ctrl)) { |
4382 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
4383 | MII_CR_RESTART_AUTO_NEG); | |
1dc32918 | 4384 | e1000_write_phy_reg(hw, PHY_CTRL, |
1da177e4 LT |
4385 | phy_ctrl); |
4386 | } | |
4387 | } | |
4388 | return; | |
96838a40 | 4389 | } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { |
1da177e4 | 4390 | /* If still no link, perhaps using 2/3 pair cable */ |
1dc32918 | 4391 | e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl); |
1da177e4 | 4392 | phy_ctrl |= CR_1000T_MS_ENABLE; |
1dc32918 JP |
4393 | e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_ctrl); |
4394 | if (!e1000_phy_setup_autoneg(hw) && | |
4395 | !e1000_read_phy_reg(hw, PHY_CTRL, &phy_ctrl)) { | |
1da177e4 LT |
4396 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | |
4397 | MII_CR_RESTART_AUTO_NEG); | |
1dc32918 | 4398 | e1000_write_phy_reg(hw, PHY_CTRL, phy_ctrl); |
1da177e4 LT |
4399 | } |
4400 | } | |
4401 | /* Restart process after E1000_SMARTSPEED_MAX iterations */ | |
96838a40 | 4402 | if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX) |
1da177e4 LT |
4403 | adapter->smartspeed = 0; |
4404 | } | |
4405 | ||
4406 | /** | |
4407 | * e1000_ioctl - | |
4408 | * @netdev: | |
4409 | * @ifreq: | |
4410 | * @cmd: | |
4411 | **/ | |
4412 | ||
64798845 | 4413 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
1da177e4 LT |
4414 | { |
4415 | switch (cmd) { | |
4416 | case SIOCGMIIPHY: | |
4417 | case SIOCGMIIREG: | |
4418 | case SIOCSMIIREG: | |
4419 | return e1000_mii_ioctl(netdev, ifr, cmd); | |
4420 | default: | |
4421 | return -EOPNOTSUPP; | |
4422 | } | |
4423 | } | |
4424 | ||
4425 | /** | |
4426 | * e1000_mii_ioctl - | |
4427 | * @netdev: | |
4428 | * @ifreq: | |
4429 | * @cmd: | |
4430 | **/ | |
4431 | ||
64798845 JP |
4432 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
4433 | int cmd) | |
1da177e4 | 4434 | { |
60490fe0 | 4435 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4436 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
4437 | struct mii_ioctl_data *data = if_mii(ifr); |
4438 | int retval; | |
406874a7 | 4439 | u16 mii_reg; |
97876fc6 | 4440 | unsigned long flags; |
1da177e4 | 4441 | |
1dc32918 | 4442 | if (hw->media_type != e1000_media_type_copper) |
1da177e4 LT |
4443 | return -EOPNOTSUPP; |
4444 | ||
4445 | switch (cmd) { | |
4446 | case SIOCGMIIPHY: | |
1dc32918 | 4447 | data->phy_id = hw->phy_addr; |
1da177e4 LT |
4448 | break; |
4449 | case SIOCGMIIREG: | |
97876fc6 | 4450 | spin_lock_irqsave(&adapter->stats_lock, flags); |
1dc32918 | 4451 | if (e1000_read_phy_reg(hw, data->reg_num & 0x1F, |
97876fc6 MC |
4452 | &data->val_out)) { |
4453 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4454 | return -EIO; |
97876fc6 MC |
4455 | } |
4456 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 LT |
4457 | break; |
4458 | case SIOCSMIIREG: | |
96838a40 | 4459 | if (data->reg_num & ~(0x1F)) |
1da177e4 LT |
4460 | return -EFAULT; |
4461 | mii_reg = data->val_in; | |
97876fc6 | 4462 | spin_lock_irqsave(&adapter->stats_lock, flags); |
1dc32918 | 4463 | if (e1000_write_phy_reg(hw, data->reg_num, |
97876fc6 MC |
4464 | mii_reg)) { |
4465 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4466 | return -EIO; |
97876fc6 | 4467 | } |
f0163ac4 | 4468 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
1dc32918 | 4469 | if (hw->media_type == e1000_media_type_copper) { |
1da177e4 LT |
4470 | switch (data->reg_num) { |
4471 | case PHY_CTRL: | |
96838a40 | 4472 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4473 | break; |
96838a40 | 4474 | if (mii_reg & MII_CR_AUTO_NEG_EN) { |
1dc32918 JP |
4475 | hw->autoneg = 1; |
4476 | hw->autoneg_advertised = 0x2F; | |
1da177e4 | 4477 | } else { |
14ad2513 | 4478 | u32 speed; |
1da177e4 | 4479 | if (mii_reg & 0x40) |
14ad2513 | 4480 | speed = SPEED_1000; |
1da177e4 | 4481 | else if (mii_reg & 0x2000) |
14ad2513 | 4482 | speed = SPEED_100; |
1da177e4 | 4483 | else |
14ad2513 DD |
4484 | speed = SPEED_10; |
4485 | retval = e1000_set_spd_dplx( | |
4486 | adapter, speed, | |
4487 | ((mii_reg & 0x100) | |
4488 | ? DUPLEX_FULL : | |
4489 | DUPLEX_HALF)); | |
f0163ac4 | 4490 | if (retval) |
1da177e4 LT |
4491 | return retval; |
4492 | } | |
2db10a08 AK |
4493 | if (netif_running(adapter->netdev)) |
4494 | e1000_reinit_locked(adapter); | |
4495 | else | |
1da177e4 LT |
4496 | e1000_reset(adapter); |
4497 | break; | |
4498 | case M88E1000_PHY_SPEC_CTRL: | |
4499 | case M88E1000_EXT_PHY_SPEC_CTRL: | |
1dc32918 | 4500 | if (e1000_phy_reset(hw)) |
1da177e4 LT |
4501 | return -EIO; |
4502 | break; | |
4503 | } | |
4504 | } else { | |
4505 | switch (data->reg_num) { | |
4506 | case PHY_CTRL: | |
96838a40 | 4507 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4508 | break; |
2db10a08 AK |
4509 | if (netif_running(adapter->netdev)) |
4510 | e1000_reinit_locked(adapter); | |
4511 | else | |
1da177e4 LT |
4512 | e1000_reset(adapter); |
4513 | break; | |
4514 | } | |
4515 | } | |
4516 | break; | |
4517 | default: | |
4518 | return -EOPNOTSUPP; | |
4519 | } | |
4520 | return E1000_SUCCESS; | |
4521 | } | |
4522 | ||
64798845 | 4523 | void e1000_pci_set_mwi(struct e1000_hw *hw) |
1da177e4 LT |
4524 | { |
4525 | struct e1000_adapter *adapter = hw->back; | |
2648345f | 4526 | int ret_val = pci_set_mwi(adapter->pdev); |
1da177e4 | 4527 | |
96838a40 | 4528 | if (ret_val) |
feb8f478 | 4529 | e_err(probe, "Error in setting MWI\n"); |
1da177e4 LT |
4530 | } |
4531 | ||
64798845 | 4532 | void e1000_pci_clear_mwi(struct e1000_hw *hw) |
1da177e4 LT |
4533 | { |
4534 | struct e1000_adapter *adapter = hw->back; | |
4535 | ||
4536 | pci_clear_mwi(adapter->pdev); | |
4537 | } | |
4538 | ||
64798845 | 4539 | int e1000_pcix_get_mmrbc(struct e1000_hw *hw) |
007755eb PO |
4540 | { |
4541 | struct e1000_adapter *adapter = hw->back; | |
4542 | return pcix_get_mmrbc(adapter->pdev); | |
4543 | } | |
4544 | ||
64798845 | 4545 | void e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc) |
007755eb PO |
4546 | { |
4547 | struct e1000_adapter *adapter = hw->back; | |
4548 | pcix_set_mmrbc(adapter->pdev, mmrbc); | |
4549 | } | |
4550 | ||
64798845 | 4551 | void e1000_io_write(struct e1000_hw *hw, unsigned long port, u32 value) |
1da177e4 LT |
4552 | { |
4553 | outl(value, port); | |
4554 | } | |
4555 | ||
5622e404 JP |
4556 | static bool e1000_vlan_used(struct e1000_adapter *adapter) |
4557 | { | |
4558 | u16 vid; | |
4559 | ||
4560 | for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) | |
4561 | return true; | |
4562 | return false; | |
4563 | } | |
4564 | ||
4565 | static void e1000_vlan_filter_on_off(struct e1000_adapter *adapter, | |
4566 | bool filter_on) | |
1da177e4 | 4567 | { |
1dc32918 | 4568 | struct e1000_hw *hw = &adapter->hw; |
5622e404 | 4569 | u32 rctl; |
1da177e4 | 4570 | |
9150b76a JB |
4571 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4572 | e1000_irq_disable(adapter); | |
1da177e4 | 4573 | |
5622e404 | 4574 | if (filter_on) { |
1532ecea JB |
4575 | /* enable VLAN receive filtering */ |
4576 | rctl = er32(RCTL); | |
4577 | rctl &= ~E1000_RCTL_CFIEN; | |
5622e404 | 4578 | if (!(adapter->netdev->flags & IFF_PROMISC)) |
1532ecea JB |
4579 | rctl |= E1000_RCTL_VFE; |
4580 | ew32(RCTL, rctl); | |
4581 | e1000_update_mng_vlan(adapter); | |
1da177e4 | 4582 | } else { |
1532ecea JB |
4583 | /* disable VLAN receive filtering */ |
4584 | rctl = er32(RCTL); | |
4585 | rctl &= ~E1000_RCTL_VFE; | |
4586 | ew32(RCTL, rctl); | |
5622e404 | 4587 | } |
fd38d7a0 | 4588 | |
5622e404 JP |
4589 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4590 | e1000_irq_enable(adapter); | |
4591 | } | |
4592 | ||
4593 | static void e1000_vlan_mode(struct net_device *netdev, u32 features) | |
4594 | { | |
4595 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4596 | struct e1000_hw *hw = &adapter->hw; | |
4597 | u32 ctrl; | |
4598 | ||
4599 | if (!test_bit(__E1000_DOWN, &adapter->flags)) | |
4600 | e1000_irq_disable(adapter); | |
4601 | ||
4602 | ctrl = er32(CTRL); | |
4603 | if (features & NETIF_F_HW_VLAN_RX) { | |
4604 | /* enable VLAN tag insert/strip */ | |
4605 | ctrl |= E1000_CTRL_VME; | |
4606 | } else { | |
4607 | /* disable VLAN tag insert/strip */ | |
4608 | ctrl &= ~E1000_CTRL_VME; | |
1da177e4 | 4609 | } |
5622e404 | 4610 | ew32(CTRL, ctrl); |
1da177e4 | 4611 | |
9150b76a JB |
4612 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4613 | e1000_irq_enable(adapter); | |
1da177e4 LT |
4614 | } |
4615 | ||
64798845 | 4616 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
1da177e4 | 4617 | { |
60490fe0 | 4618 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4619 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 4620 | u32 vfta, index; |
96838a40 | 4621 | |
1dc32918 | 4622 | if ((hw->mng_cookie.status & |
96838a40 JB |
4623 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
4624 | (vid == adapter->mng_vlan_id)) | |
2d7edb92 | 4625 | return; |
5622e404 JP |
4626 | |
4627 | if (!e1000_vlan_used(adapter)) | |
4628 | e1000_vlan_filter_on_off(adapter, true); | |
4629 | ||
1da177e4 LT |
4630 | /* add VID to filter table */ |
4631 | index = (vid >> 5) & 0x7F; | |
1dc32918 | 4632 | vfta = E1000_READ_REG_ARRAY(hw, VFTA, index); |
1da177e4 | 4633 | vfta |= (1 << (vid & 0x1F)); |
1dc32918 | 4634 | e1000_write_vfta(hw, index, vfta); |
5622e404 JP |
4635 | |
4636 | set_bit(vid, adapter->active_vlans); | |
1da177e4 LT |
4637 | } |
4638 | ||
64798845 | 4639 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
1da177e4 | 4640 | { |
60490fe0 | 4641 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4642 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 4643 | u32 vfta, index; |
1da177e4 | 4644 | |
9150b76a JB |
4645 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4646 | e1000_irq_disable(adapter); | |
9150b76a JB |
4647 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4648 | e1000_irq_enable(adapter); | |
1da177e4 LT |
4649 | |
4650 | /* remove VID from filter table */ | |
4651 | index = (vid >> 5) & 0x7F; | |
1dc32918 | 4652 | vfta = E1000_READ_REG_ARRAY(hw, VFTA, index); |
1da177e4 | 4653 | vfta &= ~(1 << (vid & 0x1F)); |
1dc32918 | 4654 | e1000_write_vfta(hw, index, vfta); |
5622e404 JP |
4655 | |
4656 | clear_bit(vid, adapter->active_vlans); | |
4657 | ||
4658 | if (!e1000_vlan_used(adapter)) | |
4659 | e1000_vlan_filter_on_off(adapter, false); | |
1da177e4 LT |
4660 | } |
4661 | ||
64798845 | 4662 | static void e1000_restore_vlan(struct e1000_adapter *adapter) |
1da177e4 | 4663 | { |
5622e404 | 4664 | u16 vid; |
1da177e4 | 4665 | |
5622e404 JP |
4666 | if (!e1000_vlan_used(adapter)) |
4667 | return; | |
4668 | ||
4669 | e1000_vlan_filter_on_off(adapter, true); | |
4670 | for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) | |
4671 | e1000_vlan_rx_add_vid(adapter->netdev, vid); | |
1da177e4 LT |
4672 | } |
4673 | ||
14ad2513 | 4674 | int e1000_set_spd_dplx(struct e1000_adapter *adapter, u32 spd, u8 dplx) |
1da177e4 | 4675 | { |
1dc32918 JP |
4676 | struct e1000_hw *hw = &adapter->hw; |
4677 | ||
4678 | hw->autoneg = 0; | |
1da177e4 | 4679 | |
14ad2513 DD |
4680 | /* Make sure dplx is at most 1 bit and lsb of speed is not set |
4681 | * for the switch() below to work */ | |
4682 | if ((spd & 1) || (dplx & ~1)) | |
4683 | goto err_inval; | |
4684 | ||
6921368f | 4685 | /* Fiber NICs only allow 1000 gbps Full duplex */ |
1dc32918 | 4686 | if ((hw->media_type == e1000_media_type_fiber) && |
14ad2513 DD |
4687 | spd != SPEED_1000 && |
4688 | dplx != DUPLEX_FULL) | |
4689 | goto err_inval; | |
6921368f | 4690 | |
14ad2513 | 4691 | switch (spd + dplx) { |
1da177e4 | 4692 | case SPEED_10 + DUPLEX_HALF: |
1dc32918 | 4693 | hw->forced_speed_duplex = e1000_10_half; |
1da177e4 LT |
4694 | break; |
4695 | case SPEED_10 + DUPLEX_FULL: | |
1dc32918 | 4696 | hw->forced_speed_duplex = e1000_10_full; |
1da177e4 LT |
4697 | break; |
4698 | case SPEED_100 + DUPLEX_HALF: | |
1dc32918 | 4699 | hw->forced_speed_duplex = e1000_100_half; |
1da177e4 LT |
4700 | break; |
4701 | case SPEED_100 + DUPLEX_FULL: | |
1dc32918 | 4702 | hw->forced_speed_duplex = e1000_100_full; |
1da177e4 LT |
4703 | break; |
4704 | case SPEED_1000 + DUPLEX_FULL: | |
1dc32918 JP |
4705 | hw->autoneg = 1; |
4706 | hw->autoneg_advertised = ADVERTISE_1000_FULL; | |
1da177e4 LT |
4707 | break; |
4708 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ | |
4709 | default: | |
14ad2513 | 4710 | goto err_inval; |
1da177e4 LT |
4711 | } |
4712 | return 0; | |
14ad2513 DD |
4713 | |
4714 | err_inval: | |
4715 | e_err(probe, "Unsupported Speed/Duplex configuration\n"); | |
4716 | return -EINVAL; | |
1da177e4 LT |
4717 | } |
4718 | ||
b43fcd7d | 4719 | static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake) |
1da177e4 LT |
4720 | { |
4721 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 4722 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4723 | struct e1000_hw *hw = &adapter->hw; |
406874a7 JP |
4724 | u32 ctrl, ctrl_ext, rctl, status; |
4725 | u32 wufc = adapter->wol; | |
6fdfef16 | 4726 | #ifdef CONFIG_PM |
240b1710 | 4727 | int retval = 0; |
6fdfef16 | 4728 | #endif |
1da177e4 LT |
4729 | |
4730 | netif_device_detach(netdev); | |
4731 | ||
2db10a08 AK |
4732 | if (netif_running(netdev)) { |
4733 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); | |
1da177e4 | 4734 | e1000_down(adapter); |
2db10a08 | 4735 | } |
1da177e4 | 4736 | |
2f82665f | 4737 | #ifdef CONFIG_PM |
1d33e9c6 | 4738 | retval = pci_save_state(pdev); |
2f82665f JB |
4739 | if (retval) |
4740 | return retval; | |
4741 | #endif | |
4742 | ||
1dc32918 | 4743 | status = er32(STATUS); |
96838a40 | 4744 | if (status & E1000_STATUS_LU) |
1da177e4 LT |
4745 | wufc &= ~E1000_WUFC_LNKC; |
4746 | ||
96838a40 | 4747 | if (wufc) { |
1da177e4 | 4748 | e1000_setup_rctl(adapter); |
db0ce50d | 4749 | e1000_set_rx_mode(netdev); |
1da177e4 LT |
4750 | |
4751 | /* turn on all-multi mode if wake on multicast is enabled */ | |
120cd576 | 4752 | if (wufc & E1000_WUFC_MC) { |
1dc32918 | 4753 | rctl = er32(RCTL); |
1da177e4 | 4754 | rctl |= E1000_RCTL_MPE; |
1dc32918 | 4755 | ew32(RCTL, rctl); |
1da177e4 LT |
4756 | } |
4757 | ||
1dc32918 JP |
4758 | if (hw->mac_type >= e1000_82540) { |
4759 | ctrl = er32(CTRL); | |
1da177e4 LT |
4760 | /* advertise wake from D3Cold */ |
4761 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
4762 | /* phy power management enable */ | |
4763 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
4764 | ctrl |= E1000_CTRL_ADVD3WUC | | |
4765 | E1000_CTRL_EN_PHY_PWR_MGMT; | |
1dc32918 | 4766 | ew32(CTRL, ctrl); |
1da177e4 LT |
4767 | } |
4768 | ||
1dc32918 | 4769 | if (hw->media_type == e1000_media_type_fiber || |
1532ecea | 4770 | hw->media_type == e1000_media_type_internal_serdes) { |
1da177e4 | 4771 | /* keep the laser running in D3 */ |
1dc32918 | 4772 | ctrl_ext = er32(CTRL_EXT); |
1da177e4 | 4773 | ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; |
1dc32918 | 4774 | ew32(CTRL_EXT, ctrl_ext); |
1da177e4 LT |
4775 | } |
4776 | ||
1dc32918 JP |
4777 | ew32(WUC, E1000_WUC_PME_EN); |
4778 | ew32(WUFC, wufc); | |
1da177e4 | 4779 | } else { |
1dc32918 JP |
4780 | ew32(WUC, 0); |
4781 | ew32(WUFC, 0); | |
1da177e4 LT |
4782 | } |
4783 | ||
0fccd0e9 JG |
4784 | e1000_release_manageability(adapter); |
4785 | ||
b43fcd7d RW |
4786 | *enable_wake = !!wufc; |
4787 | ||
0fccd0e9 | 4788 | /* make sure adapter isn't asleep if manageability is enabled */ |
b43fcd7d RW |
4789 | if (adapter->en_mng_pt) |
4790 | *enable_wake = true; | |
1da177e4 | 4791 | |
edd106fc AK |
4792 | if (netif_running(netdev)) |
4793 | e1000_free_irq(adapter); | |
4794 | ||
1da177e4 | 4795 | pci_disable_device(pdev); |
240b1710 | 4796 | |
1da177e4 LT |
4797 | return 0; |
4798 | } | |
4799 | ||
2f82665f | 4800 | #ifdef CONFIG_PM |
b43fcd7d RW |
4801 | static int e1000_suspend(struct pci_dev *pdev, pm_message_t state) |
4802 | { | |
4803 | int retval; | |
4804 | bool wake; | |
4805 | ||
4806 | retval = __e1000_shutdown(pdev, &wake); | |
4807 | if (retval) | |
4808 | return retval; | |
4809 | ||
4810 | if (wake) { | |
4811 | pci_prepare_to_sleep(pdev); | |
4812 | } else { | |
4813 | pci_wake_from_d3(pdev, false); | |
4814 | pci_set_power_state(pdev, PCI_D3hot); | |
4815 | } | |
4816 | ||
4817 | return 0; | |
4818 | } | |
4819 | ||
64798845 | 4820 | static int e1000_resume(struct pci_dev *pdev) |
1da177e4 LT |
4821 | { |
4822 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 4823 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4824 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 4825 | u32 err; |
1da177e4 | 4826 | |
d0e027db | 4827 | pci_set_power_state(pdev, PCI_D0); |
1d33e9c6 | 4828 | pci_restore_state(pdev); |
dbb5aaeb | 4829 | pci_save_state(pdev); |
81250297 TI |
4830 | |
4831 | if (adapter->need_ioport) | |
4832 | err = pci_enable_device(pdev); | |
4833 | else | |
4834 | err = pci_enable_device_mem(pdev); | |
c7be73bc | 4835 | if (err) { |
675ad473 | 4836 | pr_err("Cannot enable PCI device from suspend\n"); |
3d1dd8cb AK |
4837 | return err; |
4838 | } | |
a4cb847d | 4839 | pci_set_master(pdev); |
1da177e4 | 4840 | |
d0e027db AK |
4841 | pci_enable_wake(pdev, PCI_D3hot, 0); |
4842 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
1da177e4 | 4843 | |
c7be73bc JP |
4844 | if (netif_running(netdev)) { |
4845 | err = e1000_request_irq(adapter); | |
4846 | if (err) | |
4847 | return err; | |
4848 | } | |
edd106fc AK |
4849 | |
4850 | e1000_power_up_phy(adapter); | |
1da177e4 | 4851 | e1000_reset(adapter); |
1dc32918 | 4852 | ew32(WUS, ~0); |
1da177e4 | 4853 | |
0fccd0e9 JG |
4854 | e1000_init_manageability(adapter); |
4855 | ||
96838a40 | 4856 | if (netif_running(netdev)) |
1da177e4 LT |
4857 | e1000_up(adapter); |
4858 | ||
4859 | netif_device_attach(netdev); | |
4860 | ||
1da177e4 LT |
4861 | return 0; |
4862 | } | |
4863 | #endif | |
c653e635 AK |
4864 | |
4865 | static void e1000_shutdown(struct pci_dev *pdev) | |
4866 | { | |
b43fcd7d RW |
4867 | bool wake; |
4868 | ||
4869 | __e1000_shutdown(pdev, &wake); | |
4870 | ||
4871 | if (system_state == SYSTEM_POWER_OFF) { | |
4872 | pci_wake_from_d3(pdev, wake); | |
4873 | pci_set_power_state(pdev, PCI_D3hot); | |
4874 | } | |
c653e635 AK |
4875 | } |
4876 | ||
1da177e4 LT |
4877 | #ifdef CONFIG_NET_POLL_CONTROLLER |
4878 | /* | |
4879 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
4880 | * without having to re-enable interrupts. It's not called while | |
4881 | * the interrupt routine is executing. | |
4882 | */ | |
64798845 | 4883 | static void e1000_netpoll(struct net_device *netdev) |
1da177e4 | 4884 | { |
60490fe0 | 4885 | struct e1000_adapter *adapter = netdev_priv(netdev); |
d3d9e484 | 4886 | |
1da177e4 | 4887 | disable_irq(adapter->pdev->irq); |
7d12e780 | 4888 | e1000_intr(adapter->pdev->irq, netdev); |
1da177e4 LT |
4889 | enable_irq(adapter->pdev->irq); |
4890 | } | |
4891 | #endif | |
4892 | ||
9026729b AK |
4893 | /** |
4894 | * e1000_io_error_detected - called when PCI error is detected | |
4895 | * @pdev: Pointer to PCI device | |
120a5d0d | 4896 | * @state: The current pci connection state |
9026729b AK |
4897 | * |
4898 | * This function is called after a PCI bus error affecting | |
4899 | * this device has been detected. | |
4900 | */ | |
64798845 JP |
4901 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
4902 | pci_channel_state_t state) | |
9026729b AK |
4903 | { |
4904 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4cf1653a | 4905 | struct e1000_adapter *adapter = netdev_priv(netdev); |
9026729b AK |
4906 | |
4907 | netif_device_detach(netdev); | |
4908 | ||
eab63302 AD |
4909 | if (state == pci_channel_io_perm_failure) |
4910 | return PCI_ERS_RESULT_DISCONNECT; | |
4911 | ||
9026729b AK |
4912 | if (netif_running(netdev)) |
4913 | e1000_down(adapter); | |
72e8d6bb | 4914 | pci_disable_device(pdev); |
9026729b AK |
4915 | |
4916 | /* Request a slot slot reset. */ | |
4917 | return PCI_ERS_RESULT_NEED_RESET; | |
4918 | } | |
4919 | ||
4920 | /** | |
4921 | * e1000_io_slot_reset - called after the pci bus has been reset. | |
4922 | * @pdev: Pointer to PCI device | |
4923 | * | |
4924 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
4925 | * resembles the first-half of the e1000_resume routine. | |
4926 | */ | |
4927 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) | |
4928 | { | |
4929 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4cf1653a | 4930 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4931 | struct e1000_hw *hw = &adapter->hw; |
81250297 | 4932 | int err; |
9026729b | 4933 | |
81250297 TI |
4934 | if (adapter->need_ioport) |
4935 | err = pci_enable_device(pdev); | |
4936 | else | |
4937 | err = pci_enable_device_mem(pdev); | |
4938 | if (err) { | |
675ad473 | 4939 | pr_err("Cannot re-enable PCI device after reset.\n"); |
9026729b AK |
4940 | return PCI_ERS_RESULT_DISCONNECT; |
4941 | } | |
4942 | pci_set_master(pdev); | |
4943 | ||
dbf38c94 LV |
4944 | pci_enable_wake(pdev, PCI_D3hot, 0); |
4945 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
9026729b | 4946 | |
9026729b | 4947 | e1000_reset(adapter); |
1dc32918 | 4948 | ew32(WUS, ~0); |
9026729b AK |
4949 | |
4950 | return PCI_ERS_RESULT_RECOVERED; | |
4951 | } | |
4952 | ||
4953 | /** | |
4954 | * e1000_io_resume - called when traffic can start flowing again. | |
4955 | * @pdev: Pointer to PCI device | |
4956 | * | |
4957 | * This callback is called when the error recovery driver tells us that | |
4958 | * its OK to resume normal operation. Implementation resembles the | |
4959 | * second-half of the e1000_resume routine. | |
4960 | */ | |
4961 | static void e1000_io_resume(struct pci_dev *pdev) | |
4962 | { | |
4963 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4cf1653a | 4964 | struct e1000_adapter *adapter = netdev_priv(netdev); |
0fccd0e9 JG |
4965 | |
4966 | e1000_init_manageability(adapter); | |
9026729b AK |
4967 | |
4968 | if (netif_running(netdev)) { | |
4969 | if (e1000_up(adapter)) { | |
675ad473 | 4970 | pr_info("can't bring device back up after reset\n"); |
9026729b AK |
4971 | return; |
4972 | } | |
4973 | } | |
4974 | ||
4975 | netif_device_attach(netdev); | |
9026729b AK |
4976 | } |
4977 | ||
1da177e4 | 4978 | /* e1000_main.c */ |