]>
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); |
5cf42fcd | 134 | static void e1000_update_phy_info_task(struct work_struct *work); |
a4010afe | 135 | static void e1000_watchdog(struct work_struct *work); |
5cf42fcd | 136 | static void e1000_82547_tx_fifo_stall_task(struct work_struct *work); |
3b29a56d SH |
137 | static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
138 | struct net_device *netdev); | |
1da177e4 LT |
139 | static struct net_device_stats * e1000_get_stats(struct net_device *netdev); |
140 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu); | |
141 | static int e1000_set_mac(struct net_device *netdev, void *p); | |
7d12e780 | 142 | static irqreturn_t e1000_intr(int irq, void *data); |
c3033b01 JP |
143 | static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
144 | struct e1000_tx_ring *tx_ring); | |
bea3348e | 145 | static int e1000_clean(struct napi_struct *napi, int budget); |
c3033b01 JP |
146 | static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
147 | struct e1000_rx_ring *rx_ring, | |
148 | int *work_done, int work_to_do); | |
edbbb3ca JB |
149 | static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, |
150 | struct e1000_rx_ring *rx_ring, | |
151 | int *work_done, int work_to_do); | |
581d708e | 152 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
edbbb3ca | 153 | struct e1000_rx_ring *rx_ring, |
72d64a43 | 154 | int cleaned_count); |
edbbb3ca JB |
155 | static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, |
156 | struct e1000_rx_ring *rx_ring, | |
157 | int cleaned_count); | |
1da177e4 LT |
158 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); |
159 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
160 | int cmd); | |
1da177e4 LT |
161 | static void e1000_enter_82542_rst(struct e1000_adapter *adapter); |
162 | static void e1000_leave_82542_rst(struct e1000_adapter *adapter); | |
163 | static void e1000_tx_timeout(struct net_device *dev); | |
65f27f38 | 164 | static void e1000_reset_task(struct work_struct *work); |
1da177e4 | 165 | static void e1000_smartspeed(struct e1000_adapter *adapter); |
e619d523 AK |
166 | static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
167 | struct sk_buff *skb); | |
1da177e4 | 168 | |
5622e404 | 169 | static bool e1000_vlan_used(struct e1000_adapter *adapter); |
c8f44aff MM |
170 | static void e1000_vlan_mode(struct net_device *netdev, |
171 | netdev_features_t features); | |
406874a7 JP |
172 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid); |
173 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid); | |
1da177e4 LT |
174 | static void e1000_restore_vlan(struct e1000_adapter *adapter); |
175 | ||
6fdfef16 | 176 | #ifdef CONFIG_PM |
b43fcd7d | 177 | static int e1000_suspend(struct pci_dev *pdev, pm_message_t state); |
1da177e4 LT |
178 | static int e1000_resume(struct pci_dev *pdev); |
179 | #endif | |
c653e635 | 180 | static void e1000_shutdown(struct pci_dev *pdev); |
1da177e4 LT |
181 | |
182 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
183 | /* for netdump / net console */ | |
184 | static void e1000_netpoll (struct net_device *netdev); | |
185 | #endif | |
186 | ||
1f753861 JB |
187 | #define COPYBREAK_DEFAULT 256 |
188 | static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT; | |
189 | module_param(copybreak, uint, 0644); | |
190 | MODULE_PARM_DESC(copybreak, | |
191 | "Maximum size of packet that is copied to a new buffer on receive"); | |
192 | ||
9026729b AK |
193 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
194 | pci_channel_state_t state); | |
195 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev); | |
196 | static void e1000_io_resume(struct pci_dev *pdev); | |
197 | ||
198 | static struct pci_error_handlers e1000_err_handler = { | |
199 | .error_detected = e1000_io_error_detected, | |
200 | .slot_reset = e1000_io_slot_reset, | |
201 | .resume = e1000_io_resume, | |
202 | }; | |
24025e4e | 203 | |
1da177e4 LT |
204 | static struct pci_driver e1000_driver = { |
205 | .name = e1000_driver_name, | |
206 | .id_table = e1000_pci_tbl, | |
207 | .probe = e1000_probe, | |
208 | .remove = __devexit_p(e1000_remove), | |
c4e24f01 | 209 | #ifdef CONFIG_PM |
25985edc | 210 | /* Power Management Hooks */ |
1da177e4 | 211 | .suspend = e1000_suspend, |
c653e635 | 212 | .resume = e1000_resume, |
1da177e4 | 213 | #endif |
9026729b AK |
214 | .shutdown = e1000_shutdown, |
215 | .err_handler = &e1000_err_handler | |
1da177e4 LT |
216 | }; |
217 | ||
218 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
219 | MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); | |
220 | MODULE_LICENSE("GPL"); | |
221 | MODULE_VERSION(DRV_VERSION); | |
222 | ||
223 | static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; | |
224 | module_param(debug, int, 0); | |
225 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
226 | ||
675ad473 ET |
227 | /** |
228 | * e1000_get_hw_dev - return device | |
229 | * used by hardware layer to print debugging information | |
230 | * | |
231 | **/ | |
232 | struct net_device *e1000_get_hw_dev(struct e1000_hw *hw) | |
233 | { | |
234 | struct e1000_adapter *adapter = hw->back; | |
235 | return adapter->netdev; | |
236 | } | |
237 | ||
1da177e4 LT |
238 | /** |
239 | * e1000_init_module - Driver Registration Routine | |
240 | * | |
241 | * e1000_init_module is the first routine called when the driver is | |
242 | * loaded. All it does is register with the PCI subsystem. | |
243 | **/ | |
244 | ||
64798845 | 245 | static int __init e1000_init_module(void) |
1da177e4 LT |
246 | { |
247 | int ret; | |
675ad473 | 248 | pr_info("%s - version %s\n", e1000_driver_string, e1000_driver_version); |
1da177e4 | 249 | |
675ad473 | 250 | pr_info("%s\n", e1000_copyright); |
1da177e4 | 251 | |
29917620 | 252 | ret = pci_register_driver(&e1000_driver); |
1f753861 JB |
253 | if (copybreak != COPYBREAK_DEFAULT) { |
254 | if (copybreak == 0) | |
675ad473 | 255 | pr_info("copybreak disabled\n"); |
1f753861 | 256 | else |
675ad473 ET |
257 | pr_info("copybreak enabled for " |
258 | "packets <= %u bytes\n", copybreak); | |
1f753861 | 259 | } |
1da177e4 LT |
260 | return ret; |
261 | } | |
262 | ||
263 | module_init(e1000_init_module); | |
264 | ||
265 | /** | |
266 | * e1000_exit_module - Driver Exit Cleanup Routine | |
267 | * | |
268 | * e1000_exit_module is called just before the driver is removed | |
269 | * from memory. | |
270 | **/ | |
271 | ||
64798845 | 272 | static void __exit e1000_exit_module(void) |
1da177e4 | 273 | { |
1da177e4 LT |
274 | pci_unregister_driver(&e1000_driver); |
275 | } | |
276 | ||
277 | module_exit(e1000_exit_module); | |
278 | ||
2db10a08 AK |
279 | static int e1000_request_irq(struct e1000_adapter *adapter) |
280 | { | |
281 | struct net_device *netdev = adapter->netdev; | |
3e18826c | 282 | irq_handler_t handler = e1000_intr; |
e94bd23f AK |
283 | int irq_flags = IRQF_SHARED; |
284 | int err; | |
2db10a08 | 285 | |
e94bd23f AK |
286 | err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name, |
287 | netdev); | |
288 | if (err) { | |
feb8f478 | 289 | e_err(probe, "Unable to allocate interrupt Error: %d\n", err); |
e94bd23f | 290 | } |
2db10a08 AK |
291 | |
292 | return err; | |
293 | } | |
294 | ||
295 | static void e1000_free_irq(struct e1000_adapter *adapter) | |
296 | { | |
297 | struct net_device *netdev = adapter->netdev; | |
298 | ||
299 | free_irq(adapter->pdev->irq, netdev); | |
2db10a08 AK |
300 | } |
301 | ||
1da177e4 LT |
302 | /** |
303 | * e1000_irq_disable - Mask off interrupt generation on the NIC | |
304 | * @adapter: board private structure | |
305 | **/ | |
306 | ||
64798845 | 307 | static void e1000_irq_disable(struct e1000_adapter *adapter) |
1da177e4 | 308 | { |
1dc32918 JP |
309 | struct e1000_hw *hw = &adapter->hw; |
310 | ||
311 | ew32(IMC, ~0); | |
312 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
313 | synchronize_irq(adapter->pdev->irq); |
314 | } | |
315 | ||
316 | /** | |
317 | * e1000_irq_enable - Enable default interrupt generation settings | |
318 | * @adapter: board private structure | |
319 | **/ | |
320 | ||
64798845 | 321 | static void e1000_irq_enable(struct e1000_adapter *adapter) |
1da177e4 | 322 | { |
1dc32918 JP |
323 | struct e1000_hw *hw = &adapter->hw; |
324 | ||
325 | ew32(IMS, IMS_ENABLE_MASK); | |
326 | E1000_WRITE_FLUSH(); | |
1da177e4 | 327 | } |
3ad2cc67 | 328 | |
64798845 | 329 | static void e1000_update_mng_vlan(struct e1000_adapter *adapter) |
2d7edb92 | 330 | { |
1dc32918 | 331 | struct e1000_hw *hw = &adapter->hw; |
2d7edb92 | 332 | struct net_device *netdev = adapter->netdev; |
1dc32918 | 333 | u16 vid = hw->mng_cookie.vlan_id; |
406874a7 | 334 | u16 old_vid = adapter->mng_vlan_id; |
96838a40 | 335 | |
5622e404 JP |
336 | if (!e1000_vlan_used(adapter)) |
337 | return; | |
338 | ||
339 | if (!test_bit(vid, adapter->active_vlans)) { | |
340 | if (hw->mng_cookie.status & | |
341 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) { | |
342 | e1000_vlan_rx_add_vid(netdev, vid); | |
c5f226fe | 343 | adapter->mng_vlan_id = vid; |
5622e404 JP |
344 | } else { |
345 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
346 | } | |
347 | if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && | |
348 | (vid != old_vid) && | |
349 | !test_bit(old_vid, adapter->active_vlans)) | |
350 | e1000_vlan_rx_kill_vid(netdev, old_vid); | |
351 | } else { | |
352 | adapter->mng_vlan_id = vid; | |
2d7edb92 MC |
353 | } |
354 | } | |
b55ccb35 | 355 | |
64798845 | 356 | static void e1000_init_manageability(struct e1000_adapter *adapter) |
0fccd0e9 | 357 | { |
1dc32918 JP |
358 | struct e1000_hw *hw = &adapter->hw; |
359 | ||
0fccd0e9 | 360 | if (adapter->en_mng_pt) { |
1dc32918 | 361 | u32 manc = er32(MANC); |
0fccd0e9 JG |
362 | |
363 | /* disable hardware interception of ARP */ | |
364 | manc &= ~(E1000_MANC_ARP_EN); | |
365 | ||
1dc32918 | 366 | ew32(MANC, manc); |
0fccd0e9 JG |
367 | } |
368 | } | |
369 | ||
64798845 | 370 | static void e1000_release_manageability(struct e1000_adapter *adapter) |
0fccd0e9 | 371 | { |
1dc32918 JP |
372 | struct e1000_hw *hw = &adapter->hw; |
373 | ||
0fccd0e9 | 374 | if (adapter->en_mng_pt) { |
1dc32918 | 375 | u32 manc = er32(MANC); |
0fccd0e9 JG |
376 | |
377 | /* re-enable hardware interception of ARP */ | |
378 | manc |= E1000_MANC_ARP_EN; | |
379 | ||
1dc32918 | 380 | ew32(MANC, manc); |
0fccd0e9 JG |
381 | } |
382 | } | |
383 | ||
e0aac5a2 AK |
384 | /** |
385 | * e1000_configure - configure the hardware for RX and TX | |
386 | * @adapter = private board structure | |
387 | **/ | |
388 | static void e1000_configure(struct e1000_adapter *adapter) | |
1da177e4 LT |
389 | { |
390 | struct net_device *netdev = adapter->netdev; | |
2db10a08 | 391 | int i; |
1da177e4 | 392 | |
db0ce50d | 393 | e1000_set_rx_mode(netdev); |
1da177e4 LT |
394 | |
395 | e1000_restore_vlan(adapter); | |
0fccd0e9 | 396 | e1000_init_manageability(adapter); |
1da177e4 LT |
397 | |
398 | e1000_configure_tx(adapter); | |
399 | e1000_setup_rctl(adapter); | |
400 | e1000_configure_rx(adapter); | |
72d64a43 JK |
401 | /* call E1000_DESC_UNUSED which always leaves |
402 | * at least 1 descriptor unused to make sure | |
403 | * next_to_use != next_to_clean */ | |
f56799ea | 404 | for (i = 0; i < adapter->num_rx_queues; i++) { |
72d64a43 | 405 | struct e1000_rx_ring *ring = &adapter->rx_ring[i]; |
a292ca6e JK |
406 | adapter->alloc_rx_buf(adapter, ring, |
407 | E1000_DESC_UNUSED(ring)); | |
f56799ea | 408 | } |
e0aac5a2 AK |
409 | } |
410 | ||
411 | int e1000_up(struct e1000_adapter *adapter) | |
412 | { | |
1dc32918 JP |
413 | struct e1000_hw *hw = &adapter->hw; |
414 | ||
e0aac5a2 AK |
415 | /* hardware has been reset, we need to reload some things */ |
416 | e1000_configure(adapter); | |
417 | ||
418 | clear_bit(__E1000_DOWN, &adapter->flags); | |
7bfa4816 | 419 | |
bea3348e | 420 | napi_enable(&adapter->napi); |
c3570acb | 421 | |
5de55624 MC |
422 | e1000_irq_enable(adapter); |
423 | ||
4cb9be7a JB |
424 | netif_wake_queue(adapter->netdev); |
425 | ||
79f3d399 | 426 | /* fire a link change interrupt to start the watchdog */ |
1dc32918 | 427 | ew32(ICS, E1000_ICS_LSC); |
1da177e4 LT |
428 | return 0; |
429 | } | |
430 | ||
79f05bf0 AK |
431 | /** |
432 | * e1000_power_up_phy - restore link in case the phy was powered down | |
433 | * @adapter: address of board private structure | |
434 | * | |
435 | * The phy may be powered down to save power and turn off link when the | |
436 | * driver is unloaded and wake on lan is not enabled (among others) | |
437 | * *** this routine MUST be followed by a call to e1000_reset *** | |
438 | * | |
439 | **/ | |
440 | ||
d658266e | 441 | void e1000_power_up_phy(struct e1000_adapter *adapter) |
79f05bf0 | 442 | { |
1dc32918 | 443 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 444 | u16 mii_reg = 0; |
79f05bf0 AK |
445 | |
446 | /* Just clear the power down bit to wake the phy back up */ | |
1dc32918 | 447 | if (hw->media_type == e1000_media_type_copper) { |
79f05bf0 AK |
448 | /* according to the manual, the phy will retain its |
449 | * settings across a power-down/up cycle */ | |
1dc32918 | 450 | e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); |
79f05bf0 | 451 | mii_reg &= ~MII_CR_POWER_DOWN; |
1dc32918 | 452 | e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); |
79f05bf0 AK |
453 | } |
454 | } | |
455 | ||
456 | static void e1000_power_down_phy(struct e1000_adapter *adapter) | |
457 | { | |
1dc32918 JP |
458 | struct e1000_hw *hw = &adapter->hw; |
459 | ||
61c2505f | 460 | /* Power down the PHY so no link is implied when interface is down * |
c3033b01 | 461 | * The PHY cannot be powered down if any of the following is true * |
79f05bf0 AK |
462 | * (a) WoL is enabled |
463 | * (b) AMT is active | |
464 | * (c) SoL/IDER session is active */ | |
1dc32918 JP |
465 | if (!adapter->wol && hw->mac_type >= e1000_82540 && |
466 | hw->media_type == e1000_media_type_copper) { | |
406874a7 | 467 | u16 mii_reg = 0; |
61c2505f | 468 | |
1dc32918 | 469 | switch (hw->mac_type) { |
61c2505f BA |
470 | case e1000_82540: |
471 | case e1000_82545: | |
472 | case e1000_82545_rev_3: | |
473 | case e1000_82546: | |
5377a416 | 474 | case e1000_ce4100: |
61c2505f BA |
475 | case e1000_82546_rev_3: |
476 | case e1000_82541: | |
477 | case e1000_82541_rev_2: | |
478 | case e1000_82547: | |
479 | case e1000_82547_rev_2: | |
1dc32918 | 480 | if (er32(MANC) & E1000_MANC_SMBUS_EN) |
61c2505f BA |
481 | goto out; |
482 | break; | |
61c2505f BA |
483 | default: |
484 | goto out; | |
485 | } | |
1dc32918 | 486 | e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); |
79f05bf0 | 487 | mii_reg |= MII_CR_POWER_DOWN; |
1dc32918 | 488 | e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); |
4e0d8f7d | 489 | msleep(1); |
79f05bf0 | 490 | } |
61c2505f BA |
491 | out: |
492 | return; | |
79f05bf0 AK |
493 | } |
494 | ||
a4010afe JB |
495 | static void e1000_down_and_stop(struct e1000_adapter *adapter) |
496 | { | |
497 | set_bit(__E1000_DOWN, &adapter->flags); | |
498 | cancel_work_sync(&adapter->reset_task); | |
499 | cancel_delayed_work_sync(&adapter->watchdog_task); | |
500 | cancel_delayed_work_sync(&adapter->phy_info_task); | |
501 | cancel_delayed_work_sync(&adapter->fifo_stall_task); | |
502 | } | |
503 | ||
64798845 | 504 | void e1000_down(struct e1000_adapter *adapter) |
1da177e4 | 505 | { |
a6c42322 | 506 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 507 | struct net_device *netdev = adapter->netdev; |
a6c42322 | 508 | u32 rctl, tctl; |
1da177e4 | 509 | |
1314bbf3 | 510 | |
a6c42322 JB |
511 | /* disable receives in the hardware */ |
512 | rctl = er32(RCTL); | |
513 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
514 | /* flush and sleep below */ | |
515 | ||
51851073 | 516 | netif_tx_disable(netdev); |
a6c42322 JB |
517 | |
518 | /* disable transmits in the hardware */ | |
519 | tctl = er32(TCTL); | |
520 | tctl &= ~E1000_TCTL_EN; | |
521 | ew32(TCTL, tctl); | |
522 | /* flush both disables and wait for them to finish */ | |
523 | E1000_WRITE_FLUSH(); | |
524 | msleep(10); | |
525 | ||
bea3348e | 526 | napi_disable(&adapter->napi); |
c3570acb | 527 | |
1da177e4 | 528 | e1000_irq_disable(adapter); |
c1605eb3 | 529 | |
ab08853f AC |
530 | /* |
531 | * Setting DOWN must be after irq_disable to prevent | |
532 | * a screaming interrupt. Setting DOWN also prevents | |
a4010afe | 533 | * tasks from rescheduling. |
ab08853f | 534 | */ |
a4010afe | 535 | e1000_down_and_stop(adapter); |
1da177e4 | 536 | |
1da177e4 LT |
537 | adapter->link_speed = 0; |
538 | adapter->link_duplex = 0; | |
539 | netif_carrier_off(netdev); | |
1da177e4 LT |
540 | |
541 | e1000_reset(adapter); | |
581d708e MC |
542 | e1000_clean_all_tx_rings(adapter); |
543 | e1000_clean_all_rx_rings(adapter); | |
1da177e4 | 544 | } |
1da177e4 | 545 | |
38df7a39 | 546 | static void e1000_reinit_safe(struct e1000_adapter *adapter) |
338c15e4 JB |
547 | { |
548 | while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) | |
549 | msleep(1); | |
0ef4eedc | 550 | mutex_lock(&adapter->mutex); |
338c15e4 JB |
551 | e1000_down(adapter); |
552 | e1000_up(adapter); | |
0ef4eedc | 553 | mutex_unlock(&adapter->mutex); |
338c15e4 JB |
554 | clear_bit(__E1000_RESETTING, &adapter->flags); |
555 | } | |
556 | ||
64798845 | 557 | void e1000_reinit_locked(struct e1000_adapter *adapter) |
2db10a08 | 558 | { |
338c15e4 JB |
559 | /* if rtnl_lock is not held the call path is bogus */ |
560 | ASSERT_RTNL(); | |
2db10a08 AK |
561 | WARN_ON(in_interrupt()); |
562 | while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) | |
563 | msleep(1); | |
564 | e1000_down(adapter); | |
565 | e1000_up(adapter); | |
566 | clear_bit(__E1000_RESETTING, &adapter->flags); | |
1da177e4 LT |
567 | } |
568 | ||
64798845 | 569 | void e1000_reset(struct e1000_adapter *adapter) |
1da177e4 | 570 | { |
1dc32918 | 571 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 572 | u32 pba = 0, tx_space, min_tx_space, min_rx_space; |
c3033b01 | 573 | bool legacy_pba_adjust = false; |
b7cb8c2c | 574 | u16 hwm; |
1da177e4 LT |
575 | |
576 | /* Repartition Pba for greater than 9k mtu | |
577 | * To take effect CTRL.RST is required. | |
578 | */ | |
579 | ||
1dc32918 | 580 | switch (hw->mac_type) { |
018ea44e BA |
581 | case e1000_82542_rev2_0: |
582 | case e1000_82542_rev2_1: | |
583 | case e1000_82543: | |
584 | case e1000_82544: | |
585 | case e1000_82540: | |
586 | case e1000_82541: | |
587 | case e1000_82541_rev_2: | |
c3033b01 | 588 | legacy_pba_adjust = true; |
018ea44e BA |
589 | pba = E1000_PBA_48K; |
590 | break; | |
591 | case e1000_82545: | |
592 | case e1000_82545_rev_3: | |
593 | case e1000_82546: | |
5377a416 | 594 | case e1000_ce4100: |
018ea44e BA |
595 | case e1000_82546_rev_3: |
596 | pba = E1000_PBA_48K; | |
597 | break; | |
2d7edb92 | 598 | case e1000_82547: |
0e6ef3e0 | 599 | case e1000_82547_rev_2: |
c3033b01 | 600 | legacy_pba_adjust = true; |
2d7edb92 MC |
601 | pba = E1000_PBA_30K; |
602 | break; | |
018ea44e BA |
603 | case e1000_undefined: |
604 | case e1000_num_macs: | |
2d7edb92 MC |
605 | break; |
606 | } | |
607 | ||
c3033b01 | 608 | if (legacy_pba_adjust) { |
b7cb8c2c | 609 | if (hw->max_frame_size > E1000_RXBUFFER_8192) |
018ea44e | 610 | pba -= 8; /* allocate more FIFO for Tx */ |
2d7edb92 | 611 | |
1dc32918 | 612 | if (hw->mac_type == e1000_82547) { |
018ea44e BA |
613 | adapter->tx_fifo_head = 0; |
614 | adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; | |
615 | adapter->tx_fifo_size = | |
616 | (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; | |
617 | atomic_set(&adapter->tx_fifo_stall, 0); | |
618 | } | |
b7cb8c2c | 619 | } else if (hw->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) { |
018ea44e | 620 | /* adjust PBA for jumbo frames */ |
1dc32918 | 621 | ew32(PBA, pba); |
018ea44e BA |
622 | |
623 | /* To maintain wire speed transmits, the Tx FIFO should be | |
b7cb8c2c | 624 | * large enough to accommodate two full transmit packets, |
018ea44e | 625 | * rounded up to the next 1KB and expressed in KB. Likewise, |
b7cb8c2c | 626 | * the Rx FIFO should be large enough to accommodate at least |
018ea44e BA |
627 | * one full receive packet and is similarly rounded up and |
628 | * expressed in KB. */ | |
1dc32918 | 629 | pba = er32(PBA); |
018ea44e BA |
630 | /* upper 16 bits has Tx packet buffer allocation size in KB */ |
631 | tx_space = pba >> 16; | |
632 | /* lower 16 bits has Rx packet buffer allocation size in KB */ | |
633 | pba &= 0xffff; | |
b7cb8c2c JB |
634 | /* |
635 | * the tx fifo also stores 16 bytes of information about the tx | |
636 | * but don't include ethernet FCS because hardware appends it | |
637 | */ | |
638 | min_tx_space = (hw->max_frame_size + | |
639 | sizeof(struct e1000_tx_desc) - | |
640 | ETH_FCS_LEN) * 2; | |
9099cfb9 | 641 | min_tx_space = ALIGN(min_tx_space, 1024); |
018ea44e | 642 | min_tx_space >>= 10; |
b7cb8c2c JB |
643 | /* software strips receive CRC, so leave room for it */ |
644 | min_rx_space = hw->max_frame_size; | |
9099cfb9 | 645 | min_rx_space = ALIGN(min_rx_space, 1024); |
018ea44e BA |
646 | min_rx_space >>= 10; |
647 | ||
648 | /* If current Tx allocation is less than the min Tx FIFO size, | |
649 | * and the min Tx FIFO size is less than the current Rx FIFO | |
650 | * allocation, take space away from current Rx allocation */ | |
651 | if (tx_space < min_tx_space && | |
652 | ((min_tx_space - tx_space) < pba)) { | |
653 | pba = pba - (min_tx_space - tx_space); | |
654 | ||
655 | /* PCI/PCIx hardware has PBA alignment constraints */ | |
1dc32918 | 656 | switch (hw->mac_type) { |
018ea44e BA |
657 | case e1000_82545 ... e1000_82546_rev_3: |
658 | pba &= ~(E1000_PBA_8K - 1); | |
659 | break; | |
660 | default: | |
661 | break; | |
662 | } | |
663 | ||
664 | /* if short on rx space, rx wins and must trump tx | |
665 | * adjustment or use Early Receive if available */ | |
1532ecea JB |
666 | if (pba < min_rx_space) |
667 | pba = min_rx_space; | |
018ea44e | 668 | } |
1da177e4 | 669 | } |
2d7edb92 | 670 | |
1dc32918 | 671 | ew32(PBA, pba); |
1da177e4 | 672 | |
b7cb8c2c JB |
673 | /* |
674 | * flow control settings: | |
675 | * The high water mark must be low enough to fit one full frame | |
676 | * (or the size used for early receive) above it in the Rx FIFO. | |
677 | * Set it to the lower of: | |
678 | * - 90% of the Rx FIFO size, and | |
679 | * - the full Rx FIFO size minus the early receive size (for parts | |
680 | * with ERT support assuming ERT set to E1000_ERT_2048), or | |
681 | * - the full Rx FIFO size minus one full frame | |
682 | */ | |
683 | hwm = min(((pba << 10) * 9 / 10), | |
684 | ((pba << 10) - hw->max_frame_size)); | |
685 | ||
686 | hw->fc_high_water = hwm & 0xFFF8; /* 8-byte granularity */ | |
687 | hw->fc_low_water = hw->fc_high_water - 8; | |
edbbb3ca | 688 | hw->fc_pause_time = E1000_FC_PAUSE_TIME; |
1dc32918 JP |
689 | hw->fc_send_xon = 1; |
690 | hw->fc = hw->original_fc; | |
1da177e4 | 691 | |
2d7edb92 | 692 | /* Allow time for pending master requests to run */ |
1dc32918 JP |
693 | e1000_reset_hw(hw); |
694 | if (hw->mac_type >= e1000_82544) | |
695 | ew32(WUC, 0); | |
09ae3e88 | 696 | |
1dc32918 | 697 | if (e1000_init_hw(hw)) |
feb8f478 | 698 | e_dev_err("Hardware Error\n"); |
2d7edb92 | 699 | e1000_update_mng_vlan(adapter); |
3d5460a0 JB |
700 | |
701 | /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */ | |
1dc32918 | 702 | if (hw->mac_type >= e1000_82544 && |
1dc32918 JP |
703 | hw->autoneg == 1 && |
704 | hw->autoneg_advertised == ADVERTISE_1000_FULL) { | |
705 | u32 ctrl = er32(CTRL); | |
3d5460a0 JB |
706 | /* clear phy power management bit if we are in gig only mode, |
707 | * which if enabled will attempt negotiation to 100Mb, which | |
708 | * can cause a loss of link at power off or driver unload */ | |
709 | ctrl &= ~E1000_CTRL_SWDPIN3; | |
1dc32918 | 710 | ew32(CTRL, ctrl); |
3d5460a0 JB |
711 | } |
712 | ||
1da177e4 | 713 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
1dc32918 | 714 | ew32(VET, ETHERNET_IEEE_VLAN_TYPE); |
1da177e4 | 715 | |
1dc32918 JP |
716 | e1000_reset_adaptive(hw); |
717 | e1000_phy_get_info(hw, &adapter->phy_info); | |
9a53a202 | 718 | |
0fccd0e9 | 719 | e1000_release_manageability(adapter); |
1da177e4 LT |
720 | } |
721 | ||
67b3c27c AK |
722 | /** |
723 | * Dump the eeprom for users having checksum issues | |
724 | **/ | |
b4ea895d | 725 | static void e1000_dump_eeprom(struct e1000_adapter *adapter) |
67b3c27c AK |
726 | { |
727 | struct net_device *netdev = adapter->netdev; | |
728 | struct ethtool_eeprom eeprom; | |
729 | const struct ethtool_ops *ops = netdev->ethtool_ops; | |
730 | u8 *data; | |
731 | int i; | |
732 | u16 csum_old, csum_new = 0; | |
733 | ||
734 | eeprom.len = ops->get_eeprom_len(netdev); | |
735 | eeprom.offset = 0; | |
736 | ||
737 | data = kmalloc(eeprom.len, GFP_KERNEL); | |
738 | if (!data) { | |
675ad473 | 739 | pr_err("Unable to allocate memory to dump EEPROM data\n"); |
67b3c27c AK |
740 | return; |
741 | } | |
742 | ||
743 | ops->get_eeprom(netdev, &eeprom, data); | |
744 | ||
745 | csum_old = (data[EEPROM_CHECKSUM_REG * 2]) + | |
746 | (data[EEPROM_CHECKSUM_REG * 2 + 1] << 8); | |
747 | for (i = 0; i < EEPROM_CHECKSUM_REG * 2; i += 2) | |
748 | csum_new += data[i] + (data[i + 1] << 8); | |
749 | csum_new = EEPROM_SUM - csum_new; | |
750 | ||
675ad473 ET |
751 | pr_err("/*********************/\n"); |
752 | pr_err("Current EEPROM Checksum : 0x%04x\n", csum_old); | |
753 | pr_err("Calculated : 0x%04x\n", csum_new); | |
67b3c27c | 754 | |
675ad473 ET |
755 | pr_err("Offset Values\n"); |
756 | pr_err("======== ======\n"); | |
67b3c27c AK |
757 | print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, data, 128, 0); |
758 | ||
675ad473 ET |
759 | pr_err("Include this output when contacting your support provider.\n"); |
760 | pr_err("This is not a software error! Something bad happened to\n"); | |
761 | pr_err("your hardware or EEPROM image. Ignoring this problem could\n"); | |
762 | pr_err("result in further problems, possibly loss of data,\n"); | |
763 | pr_err("corruption or system hangs!\n"); | |
764 | pr_err("The MAC Address will be reset to 00:00:00:00:00:00,\n"); | |
765 | pr_err("which is invalid and requires you to set the proper MAC\n"); | |
766 | pr_err("address manually before continuing to enable this network\n"); | |
767 | pr_err("device. Please inspect the EEPROM dump and report the\n"); | |
768 | pr_err("issue to your hardware vendor or Intel Customer Support.\n"); | |
769 | pr_err("/*********************/\n"); | |
67b3c27c AK |
770 | |
771 | kfree(data); | |
772 | } | |
773 | ||
81250297 TI |
774 | /** |
775 | * e1000_is_need_ioport - determine if an adapter needs ioport resources or not | |
776 | * @pdev: PCI device information struct | |
777 | * | |
778 | * Return true if an adapter needs ioport resources | |
779 | **/ | |
780 | static int e1000_is_need_ioport(struct pci_dev *pdev) | |
781 | { | |
782 | switch (pdev->device) { | |
783 | case E1000_DEV_ID_82540EM: | |
784 | case E1000_DEV_ID_82540EM_LOM: | |
785 | case E1000_DEV_ID_82540EP: | |
786 | case E1000_DEV_ID_82540EP_LOM: | |
787 | case E1000_DEV_ID_82540EP_LP: | |
788 | case E1000_DEV_ID_82541EI: | |
789 | case E1000_DEV_ID_82541EI_MOBILE: | |
790 | case E1000_DEV_ID_82541ER: | |
791 | case E1000_DEV_ID_82541ER_LOM: | |
792 | case E1000_DEV_ID_82541GI: | |
793 | case E1000_DEV_ID_82541GI_LF: | |
794 | case E1000_DEV_ID_82541GI_MOBILE: | |
795 | case E1000_DEV_ID_82544EI_COPPER: | |
796 | case E1000_DEV_ID_82544EI_FIBER: | |
797 | case E1000_DEV_ID_82544GC_COPPER: | |
798 | case E1000_DEV_ID_82544GC_LOM: | |
799 | case E1000_DEV_ID_82545EM_COPPER: | |
800 | case E1000_DEV_ID_82545EM_FIBER: | |
801 | case E1000_DEV_ID_82546EB_COPPER: | |
802 | case E1000_DEV_ID_82546EB_FIBER: | |
803 | case E1000_DEV_ID_82546EB_QUAD_COPPER: | |
804 | return true; | |
805 | default: | |
806 | return false; | |
807 | } | |
808 | } | |
809 | ||
c8f44aff MM |
810 | static netdev_features_t e1000_fix_features(struct net_device *netdev, |
811 | netdev_features_t features) | |
5622e404 JP |
812 | { |
813 | /* | |
814 | * Since there is no support for separate rx/tx vlan accel | |
815 | * enable/disable make sure tx flag is always in same state as rx. | |
816 | */ | |
817 | if (features & NETIF_F_HW_VLAN_RX) | |
818 | features |= NETIF_F_HW_VLAN_TX; | |
819 | else | |
820 | features &= ~NETIF_F_HW_VLAN_TX; | |
821 | ||
822 | return features; | |
823 | } | |
824 | ||
c8f44aff MM |
825 | static int e1000_set_features(struct net_device *netdev, |
826 | netdev_features_t features) | |
e97d3207 MM |
827 | { |
828 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
c8f44aff | 829 | netdev_features_t changed = features ^ netdev->features; |
e97d3207 | 830 | |
5622e404 JP |
831 | if (changed & NETIF_F_HW_VLAN_RX) |
832 | e1000_vlan_mode(netdev, features); | |
833 | ||
e97d3207 MM |
834 | if (!(changed & NETIF_F_RXCSUM)) |
835 | return 0; | |
836 | ||
837 | adapter->rx_csum = !!(features & NETIF_F_RXCSUM); | |
838 | ||
839 | if (netif_running(netdev)) | |
840 | e1000_reinit_locked(adapter); | |
841 | else | |
842 | e1000_reset(adapter); | |
843 | ||
844 | return 0; | |
845 | } | |
846 | ||
0e7614bc SH |
847 | static const struct net_device_ops e1000_netdev_ops = { |
848 | .ndo_open = e1000_open, | |
849 | .ndo_stop = e1000_close, | |
00829823 | 850 | .ndo_start_xmit = e1000_xmit_frame, |
0e7614bc SH |
851 | .ndo_get_stats = e1000_get_stats, |
852 | .ndo_set_rx_mode = e1000_set_rx_mode, | |
853 | .ndo_set_mac_address = e1000_set_mac, | |
5622e404 | 854 | .ndo_tx_timeout = e1000_tx_timeout, |
0e7614bc SH |
855 | .ndo_change_mtu = e1000_change_mtu, |
856 | .ndo_do_ioctl = e1000_ioctl, | |
857 | .ndo_validate_addr = eth_validate_addr, | |
0e7614bc SH |
858 | .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, |
859 | .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, | |
860 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
861 | .ndo_poll_controller = e1000_netpoll, | |
862 | #endif | |
5622e404 JP |
863 | .ndo_fix_features = e1000_fix_features, |
864 | .ndo_set_features = e1000_set_features, | |
0e7614bc SH |
865 | }; |
866 | ||
e508be17 JB |
867 | /** |
868 | * e1000_init_hw_struct - initialize members of hw struct | |
869 | * @adapter: board private struct | |
870 | * @hw: structure used by e1000_hw.c | |
871 | * | |
872 | * Factors out initialization of the e1000_hw struct to its own function | |
873 | * that can be called very early at init (just after struct allocation). | |
874 | * Fields are initialized based on PCI device information and | |
875 | * OS network device settings (MTU size). | |
876 | * Returns negative error codes if MAC type setup fails. | |
877 | */ | |
878 | static int e1000_init_hw_struct(struct e1000_adapter *adapter, | |
879 | struct e1000_hw *hw) | |
880 | { | |
881 | struct pci_dev *pdev = adapter->pdev; | |
882 | ||
883 | /* PCI config space info */ | |
884 | hw->vendor_id = pdev->vendor; | |
885 | hw->device_id = pdev->device; | |
886 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
887 | hw->subsystem_id = pdev->subsystem_device; | |
888 | hw->revision_id = pdev->revision; | |
889 | ||
890 | pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); | |
891 | ||
892 | hw->max_frame_size = adapter->netdev->mtu + | |
893 | ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; | |
894 | hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; | |
895 | ||
896 | /* identify the MAC */ | |
897 | if (e1000_set_mac_type(hw)) { | |
898 | e_err(probe, "Unknown MAC Type\n"); | |
899 | return -EIO; | |
900 | } | |
901 | ||
902 | switch (hw->mac_type) { | |
903 | default: | |
904 | break; | |
905 | case e1000_82541: | |
906 | case e1000_82547: | |
907 | case e1000_82541_rev_2: | |
908 | case e1000_82547_rev_2: | |
909 | hw->phy_init_script = 1; | |
910 | break; | |
911 | } | |
912 | ||
913 | e1000_set_media_type(hw); | |
914 | e1000_get_bus_info(hw); | |
915 | ||
916 | hw->wait_autoneg_complete = false; | |
917 | hw->tbi_compatibility_en = true; | |
918 | hw->adaptive_ifs = true; | |
919 | ||
920 | /* Copper options */ | |
921 | ||
922 | if (hw->media_type == e1000_media_type_copper) { | |
923 | hw->mdix = AUTO_ALL_MODES; | |
924 | hw->disable_polarity_correction = false; | |
925 | hw->master_slave = E1000_MASTER_SLAVE; | |
926 | } | |
927 | ||
928 | return 0; | |
929 | } | |
930 | ||
1da177e4 LT |
931 | /** |
932 | * e1000_probe - Device Initialization Routine | |
933 | * @pdev: PCI device information struct | |
934 | * @ent: entry in e1000_pci_tbl | |
935 | * | |
936 | * Returns 0 on success, negative on failure | |
937 | * | |
938 | * e1000_probe initializes an adapter identified by a pci_dev structure. | |
939 | * The OS initialization, configuring of the adapter private structure, | |
940 | * and a hardware reset occur. | |
941 | **/ | |
1dc32918 JP |
942 | static int __devinit e1000_probe(struct pci_dev *pdev, |
943 | const struct pci_device_id *ent) | |
1da177e4 LT |
944 | { |
945 | struct net_device *netdev; | |
946 | struct e1000_adapter *adapter; | |
1dc32918 | 947 | struct e1000_hw *hw; |
2d7edb92 | 948 | |
1da177e4 | 949 | static int cards_found = 0; |
120cd576 | 950 | static int global_quad_port_a = 0; /* global ksp3 port a indication */ |
2d7edb92 | 951 | int i, err, pci_using_dac; |
406874a7 | 952 | u16 eeprom_data = 0; |
5377a416 | 953 | u16 tmp = 0; |
406874a7 | 954 | u16 eeprom_apme_mask = E1000_EEPROM_APME; |
81250297 | 955 | int bars, need_ioport; |
0795af57 | 956 | |
81250297 TI |
957 | /* do not allocate ioport bars when not needed */ |
958 | need_ioport = e1000_is_need_ioport(pdev); | |
959 | if (need_ioport) { | |
960 | bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO); | |
961 | err = pci_enable_device(pdev); | |
962 | } else { | |
963 | bars = pci_select_bars(pdev, IORESOURCE_MEM); | |
4d7155b9 | 964 | err = pci_enable_device_mem(pdev); |
81250297 | 965 | } |
c7be73bc | 966 | if (err) |
1da177e4 LT |
967 | return err; |
968 | ||
81250297 | 969 | err = pci_request_selected_regions(pdev, bars, e1000_driver_name); |
c7be73bc | 970 | if (err) |
6dd62ab0 | 971 | goto err_pci_reg; |
1da177e4 LT |
972 | |
973 | pci_set_master(pdev); | |
dbb5aaeb NN |
974 | err = pci_save_state(pdev); |
975 | if (err) | |
976 | goto err_alloc_etherdev; | |
1da177e4 | 977 | |
6dd62ab0 | 978 | err = -ENOMEM; |
1da177e4 | 979 | netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
6dd62ab0 | 980 | if (!netdev) |
1da177e4 | 981 | goto err_alloc_etherdev; |
1da177e4 | 982 | |
1da177e4 LT |
983 | SET_NETDEV_DEV(netdev, &pdev->dev); |
984 | ||
985 | pci_set_drvdata(pdev, netdev); | |
60490fe0 | 986 | adapter = netdev_priv(netdev); |
1da177e4 LT |
987 | adapter->netdev = netdev; |
988 | adapter->pdev = pdev; | |
1da177e4 | 989 | adapter->msg_enable = (1 << debug) - 1; |
81250297 TI |
990 | adapter->bars = bars; |
991 | adapter->need_ioport = need_ioport; | |
1da177e4 | 992 | |
1dc32918 JP |
993 | hw = &adapter->hw; |
994 | hw->back = adapter; | |
995 | ||
6dd62ab0 | 996 | err = -EIO; |
275f165f | 997 | hw->hw_addr = pci_ioremap_bar(pdev, BAR_0); |
1dc32918 | 998 | if (!hw->hw_addr) |
1da177e4 | 999 | goto err_ioremap; |
1da177e4 | 1000 | |
81250297 TI |
1001 | if (adapter->need_ioport) { |
1002 | for (i = BAR_1; i <= BAR_5; i++) { | |
1003 | if (pci_resource_len(pdev, i) == 0) | |
1004 | continue; | |
1005 | if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { | |
1006 | hw->io_base = pci_resource_start(pdev, i); | |
1007 | break; | |
1008 | } | |
1da177e4 LT |
1009 | } |
1010 | } | |
1011 | ||
e508be17 JB |
1012 | /* make ready for any if (hw->...) below */ |
1013 | err = e1000_init_hw_struct(adapter, hw); | |
1014 | if (err) | |
1015 | goto err_sw_init; | |
1016 | ||
1017 | /* | |
1018 | * there is a workaround being applied below that limits | |
1019 | * 64-bit DMA addresses to 64-bit hardware. There are some | |
1020 | * 32-bit adapters that Tx hang when given 64-bit DMA addresses | |
1021 | */ | |
1022 | pci_using_dac = 0; | |
1023 | if ((hw->bus_type == e1000_bus_type_pcix) && | |
1024 | !dma_set_mask(&pdev->dev, DMA_BIT_MASK(64))) { | |
1025 | /* | |
1026 | * according to DMA-API-HOWTO, coherent calls will always | |
1027 | * succeed if the set call did | |
1028 | */ | |
1029 | dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); | |
1030 | pci_using_dac = 1; | |
e508be17 | 1031 | } else { |
19a0b67a DN |
1032 | err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); |
1033 | if (err) { | |
1034 | pr_err("No usable DMA config, aborting\n"); | |
1035 | goto err_dma; | |
1036 | } | |
1037 | dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); | |
e508be17 JB |
1038 | } |
1039 | ||
0e7614bc | 1040 | netdev->netdev_ops = &e1000_netdev_ops; |
1da177e4 | 1041 | e1000_set_ethtool_ops(netdev); |
1da177e4 | 1042 | netdev->watchdog_timeo = 5 * HZ; |
bea3348e | 1043 | netif_napi_add(netdev, &adapter->napi, e1000_clean, 64); |
0e7614bc | 1044 | |
0eb5a34c | 1045 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
1da177e4 | 1046 | |
1da177e4 LT |
1047 | adapter->bd_number = cards_found; |
1048 | ||
1049 | /* setup the private structure */ | |
1050 | ||
c7be73bc JP |
1051 | err = e1000_sw_init(adapter); |
1052 | if (err) | |
1da177e4 LT |
1053 | goto err_sw_init; |
1054 | ||
6dd62ab0 | 1055 | err = -EIO; |
5377a416 DB |
1056 | if (hw->mac_type == e1000_ce4100) { |
1057 | ce4100_gbe_mdio_base_phy = pci_resource_start(pdev, BAR_1); | |
1058 | ce4100_gbe_mdio_base_virt = ioremap(ce4100_gbe_mdio_base_phy, | |
1059 | pci_resource_len(pdev, BAR_1)); | |
1060 | ||
1061 | if (!ce4100_gbe_mdio_base_virt) | |
1062 | goto err_mdio_ioremap; | |
1063 | } | |
2d7edb92 | 1064 | |
1dc32918 | 1065 | if (hw->mac_type >= e1000_82543) { |
e97d3207 | 1066 | netdev->hw_features = NETIF_F_SG | |
5622e404 JP |
1067 | NETIF_F_HW_CSUM | |
1068 | NETIF_F_HW_VLAN_RX; | |
e97d3207 | 1069 | netdev->features = NETIF_F_HW_VLAN_TX | |
1da177e4 LT |
1070 | NETIF_F_HW_VLAN_FILTER; |
1071 | } | |
1072 | ||
1dc32918 JP |
1073 | if ((hw->mac_type >= e1000_82544) && |
1074 | (hw->mac_type != e1000_82547)) | |
e97d3207 MM |
1075 | netdev->hw_features |= NETIF_F_TSO; |
1076 | ||
1077 | netdev->features |= netdev->hw_features; | |
1078 | netdev->hw_features |= NETIF_F_RXCSUM; | |
2d7edb92 | 1079 | |
7b872a55 | 1080 | if (pci_using_dac) { |
1da177e4 | 1081 | netdev->features |= NETIF_F_HIGHDMA; |
7b872a55 YZ |
1082 | netdev->vlan_features |= NETIF_F_HIGHDMA; |
1083 | } | |
1da177e4 | 1084 | |
20501a69 | 1085 | netdev->vlan_features |= NETIF_F_TSO; |
20501a69 PM |
1086 | netdev->vlan_features |= NETIF_F_HW_CSUM; |
1087 | netdev->vlan_features |= NETIF_F_SG; | |
1088 | ||
01789349 JP |
1089 | netdev->priv_flags |= IFF_UNICAST_FLT; |
1090 | ||
1dc32918 | 1091 | adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw); |
2d7edb92 | 1092 | |
cd94dd0b | 1093 | /* initialize eeprom parameters */ |
1dc32918 | 1094 | if (e1000_init_eeprom_params(hw)) { |
feb8f478 | 1095 | e_err(probe, "EEPROM initialization failed\n"); |
6dd62ab0 | 1096 | goto err_eeprom; |
cd94dd0b AK |
1097 | } |
1098 | ||
96838a40 | 1099 | /* before reading the EEPROM, reset the controller to |
1da177e4 | 1100 | * put the device in a known good starting state */ |
96838a40 | 1101 | |
1dc32918 | 1102 | e1000_reset_hw(hw); |
1da177e4 LT |
1103 | |
1104 | /* make sure the EEPROM is good */ | |
1dc32918 | 1105 | if (e1000_validate_eeprom_checksum(hw) < 0) { |
feb8f478 | 1106 | e_err(probe, "The EEPROM Checksum Is Not Valid\n"); |
67b3c27c AK |
1107 | e1000_dump_eeprom(adapter); |
1108 | /* | |
1109 | * set MAC address to all zeroes to invalidate and temporary | |
1110 | * disable this device for the user. This blocks regular | |
1111 | * traffic while still permitting ethtool ioctls from reaching | |
1112 | * the hardware as well as allowing the user to run the | |
1113 | * interface after manually setting a hw addr using | |
1114 | * `ip set address` | |
1115 | */ | |
1dc32918 | 1116 | memset(hw->mac_addr, 0, netdev->addr_len); |
67b3c27c AK |
1117 | } else { |
1118 | /* copy the MAC address out of the EEPROM */ | |
1dc32918 | 1119 | if (e1000_read_mac_addr(hw)) |
feb8f478 | 1120 | e_err(probe, "EEPROM Read Error\n"); |
1da177e4 | 1121 | } |
67b3c27c | 1122 | /* don't block initalization here due to bad MAC address */ |
1dc32918 JP |
1123 | memcpy(netdev->dev_addr, hw->mac_addr, netdev->addr_len); |
1124 | memcpy(netdev->perm_addr, hw->mac_addr, netdev->addr_len); | |
1da177e4 | 1125 | |
67b3c27c | 1126 | if (!is_valid_ether_addr(netdev->perm_addr)) |
feb8f478 | 1127 | e_err(probe, "Invalid MAC Address\n"); |
1da177e4 | 1128 | |
1da177e4 | 1129 | |
a4010afe JB |
1130 | INIT_DELAYED_WORK(&adapter->watchdog_task, e1000_watchdog); |
1131 | INIT_DELAYED_WORK(&adapter->fifo_stall_task, | |
1132 | e1000_82547_tx_fifo_stall_task); | |
1133 | INIT_DELAYED_WORK(&adapter->phy_info_task, e1000_update_phy_info_task); | |
65f27f38 | 1134 | INIT_WORK(&adapter->reset_task, e1000_reset_task); |
1da177e4 | 1135 | |
1da177e4 LT |
1136 | e1000_check_options(adapter); |
1137 | ||
1138 | /* Initial Wake on LAN setting | |
1139 | * If APM wake is enabled in the EEPROM, | |
1140 | * enable the ACPI Magic Packet filter | |
1141 | */ | |
1142 | ||
1dc32918 | 1143 | switch (hw->mac_type) { |
1da177e4 LT |
1144 | case e1000_82542_rev2_0: |
1145 | case e1000_82542_rev2_1: | |
1146 | case e1000_82543: | |
1147 | break; | |
1148 | case e1000_82544: | |
1dc32918 | 1149 | e1000_read_eeprom(hw, |
1da177e4 LT |
1150 | EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); |
1151 | eeprom_apme_mask = E1000_EEPROM_82544_APM; | |
1152 | break; | |
1153 | case e1000_82546: | |
1154 | case e1000_82546_rev_3: | |
1dc32918 JP |
1155 | if (er32(STATUS) & E1000_STATUS_FUNC_1){ |
1156 | e1000_read_eeprom(hw, | |
1da177e4 LT |
1157 | EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); |
1158 | break; | |
1159 | } | |
1160 | /* Fall Through */ | |
1161 | default: | |
1dc32918 | 1162 | e1000_read_eeprom(hw, |
1da177e4 LT |
1163 | EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); |
1164 | break; | |
1165 | } | |
96838a40 | 1166 | if (eeprom_data & eeprom_apme_mask) |
120cd576 JB |
1167 | adapter->eeprom_wol |= E1000_WUFC_MAG; |
1168 | ||
1169 | /* now that we have the eeprom settings, apply the special cases | |
1170 | * where the eeprom may be wrong or the board simply won't support | |
1171 | * wake on lan on a particular port */ | |
1172 | switch (pdev->device) { | |
1173 | case E1000_DEV_ID_82546GB_PCIE: | |
1174 | adapter->eeprom_wol = 0; | |
1175 | break; | |
1176 | case E1000_DEV_ID_82546EB_FIBER: | |
1177 | case E1000_DEV_ID_82546GB_FIBER: | |
120cd576 JB |
1178 | /* Wake events only supported on port A for dual fiber |
1179 | * regardless of eeprom setting */ | |
1dc32918 | 1180 | if (er32(STATUS) & E1000_STATUS_FUNC_1) |
120cd576 JB |
1181 | adapter->eeprom_wol = 0; |
1182 | break; | |
1183 | case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3: | |
1184 | /* if quad port adapter, disable WoL on all but port A */ | |
1185 | if (global_quad_port_a != 0) | |
1186 | adapter->eeprom_wol = 0; | |
1187 | else | |
1188 | adapter->quad_port_a = 1; | |
1189 | /* Reset for multiple quad port adapters */ | |
1190 | if (++global_quad_port_a == 4) | |
1191 | global_quad_port_a = 0; | |
1192 | break; | |
1193 | } | |
1194 | ||
1195 | /* initialize the wol settings based on the eeprom settings */ | |
1196 | adapter->wol = adapter->eeprom_wol; | |
de126489 | 1197 | device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
1da177e4 | 1198 | |
5377a416 DB |
1199 | /* Auto detect PHY address */ |
1200 | if (hw->mac_type == e1000_ce4100) { | |
1201 | for (i = 0; i < 32; i++) { | |
1202 | hw->phy_addr = i; | |
1203 | e1000_read_phy_reg(hw, PHY_ID2, &tmp); | |
1204 | if (tmp == 0 || tmp == 0xFF) { | |
1205 | if (i == 31) | |
1206 | goto err_eeprom; | |
1207 | continue; | |
1208 | } else | |
1209 | break; | |
1210 | } | |
1211 | } | |
1212 | ||
675ad473 ET |
1213 | /* reset the hardware with the new settings */ |
1214 | e1000_reset(adapter); | |
1215 | ||
1216 | strcpy(netdev->name, "eth%d"); | |
1217 | err = register_netdev(netdev); | |
1218 | if (err) | |
1219 | goto err_register; | |
1220 | ||
5622e404 JP |
1221 | e1000_vlan_mode(netdev, netdev->features); |
1222 | ||
fb3d47d4 | 1223 | /* print bus type/speed/width info */ |
feb8f478 | 1224 | e_info(probe, "(PCI%s:%dMHz:%d-bit) %pM\n", |
7837e58c JP |
1225 | ((hw->bus_type == e1000_bus_type_pcix) ? "-X" : ""), |
1226 | ((hw->bus_speed == e1000_bus_speed_133) ? 133 : | |
1227 | (hw->bus_speed == e1000_bus_speed_120) ? 120 : | |
1228 | (hw->bus_speed == e1000_bus_speed_100) ? 100 : | |
1229 | (hw->bus_speed == e1000_bus_speed_66) ? 66 : 33), | |
1230 | ((hw->bus_width == e1000_bus_width_64) ? 64 : 32), | |
1231 | netdev->dev_addr); | |
1314bbf3 | 1232 | |
eb62efd2 JB |
1233 | /* carrier off reporting is important to ethtool even BEFORE open */ |
1234 | netif_carrier_off(netdev); | |
1235 | ||
feb8f478 | 1236 | e_info(probe, "Intel(R) PRO/1000 Network Connection\n"); |
1da177e4 LT |
1237 | |
1238 | cards_found++; | |
1239 | return 0; | |
1240 | ||
1241 | err_register: | |
6dd62ab0 | 1242 | err_eeprom: |
1532ecea | 1243 | e1000_phy_hw_reset(hw); |
6dd62ab0 | 1244 | |
1dc32918 JP |
1245 | if (hw->flash_address) |
1246 | iounmap(hw->flash_address); | |
6dd62ab0 VA |
1247 | kfree(adapter->tx_ring); |
1248 | kfree(adapter->rx_ring); | |
e508be17 | 1249 | err_dma: |
1da177e4 | 1250 | err_sw_init: |
5377a416 DB |
1251 | err_mdio_ioremap: |
1252 | iounmap(ce4100_gbe_mdio_base_virt); | |
1dc32918 | 1253 | iounmap(hw->hw_addr); |
1da177e4 LT |
1254 | err_ioremap: |
1255 | free_netdev(netdev); | |
1256 | err_alloc_etherdev: | |
81250297 | 1257 | pci_release_selected_regions(pdev, bars); |
6dd62ab0 | 1258 | err_pci_reg: |
6dd62ab0 | 1259 | pci_disable_device(pdev); |
1da177e4 LT |
1260 | return err; |
1261 | } | |
1262 | ||
1263 | /** | |
1264 | * e1000_remove - Device Removal Routine | |
1265 | * @pdev: PCI device information struct | |
1266 | * | |
1267 | * e1000_remove is called by the PCI subsystem to alert the driver | |
1268 | * that it should release a PCI device. The could be caused by a | |
1269 | * Hot-Plug event, or because the driver is going to be removed from | |
1270 | * memory. | |
1271 | **/ | |
1272 | ||
64798845 | 1273 | static void __devexit e1000_remove(struct pci_dev *pdev) |
1da177e4 LT |
1274 | { |
1275 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 1276 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 1277 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 1278 | |
a4010afe | 1279 | e1000_down_and_stop(adapter); |
0fccd0e9 | 1280 | e1000_release_manageability(adapter); |
1da177e4 | 1281 | |
bea3348e SH |
1282 | unregister_netdev(netdev); |
1283 | ||
1532ecea | 1284 | e1000_phy_hw_reset(hw); |
1da177e4 | 1285 | |
24025e4e MC |
1286 | kfree(adapter->tx_ring); |
1287 | kfree(adapter->rx_ring); | |
24025e4e | 1288 | |
1dc32918 JP |
1289 | iounmap(hw->hw_addr); |
1290 | if (hw->flash_address) | |
1291 | iounmap(hw->flash_address); | |
81250297 | 1292 | pci_release_selected_regions(pdev, adapter->bars); |
1da177e4 LT |
1293 | |
1294 | free_netdev(netdev); | |
1295 | ||
1296 | pci_disable_device(pdev); | |
1297 | } | |
1298 | ||
1299 | /** | |
1300 | * e1000_sw_init - Initialize general software structures (struct e1000_adapter) | |
1301 | * @adapter: board private structure to initialize | |
1302 | * | |
1303 | * e1000_sw_init initializes the Adapter private data structure. | |
e508be17 | 1304 | * e1000_init_hw_struct MUST be called before this function |
1da177e4 LT |
1305 | **/ |
1306 | ||
64798845 | 1307 | static int __devinit e1000_sw_init(struct e1000_adapter *adapter) |
1da177e4 | 1308 | { |
eb0f8054 | 1309 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
1da177e4 | 1310 | |
f56799ea JK |
1311 | adapter->num_tx_queues = 1; |
1312 | adapter->num_rx_queues = 1; | |
581d708e MC |
1313 | |
1314 | if (e1000_alloc_queues(adapter)) { | |
feb8f478 | 1315 | e_err(probe, "Unable to allocate memory for queues\n"); |
581d708e MC |
1316 | return -ENOMEM; |
1317 | } | |
1318 | ||
47313054 | 1319 | /* Explicitly disable IRQ since the NIC can be in any state. */ |
47313054 HX |
1320 | e1000_irq_disable(adapter); |
1321 | ||
1da177e4 | 1322 | spin_lock_init(&adapter->stats_lock); |
0ef4eedc | 1323 | mutex_init(&adapter->mutex); |
1da177e4 | 1324 | |
1314bbf3 AK |
1325 | set_bit(__E1000_DOWN, &adapter->flags); |
1326 | ||
1da177e4 LT |
1327 | return 0; |
1328 | } | |
1329 | ||
581d708e MC |
1330 | /** |
1331 | * e1000_alloc_queues - Allocate memory for all rings | |
1332 | * @adapter: board private structure to initialize | |
1333 | * | |
1334 | * We allocate one ring per queue at run-time since we don't know the | |
3e1d7cd2 | 1335 | * number of queues at compile-time. |
581d708e MC |
1336 | **/ |
1337 | ||
64798845 | 1338 | static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter) |
581d708e | 1339 | { |
1c7e5b12 YB |
1340 | adapter->tx_ring = kcalloc(adapter->num_tx_queues, |
1341 | sizeof(struct e1000_tx_ring), GFP_KERNEL); | |
581d708e MC |
1342 | if (!adapter->tx_ring) |
1343 | return -ENOMEM; | |
581d708e | 1344 | |
1c7e5b12 YB |
1345 | adapter->rx_ring = kcalloc(adapter->num_rx_queues, |
1346 | sizeof(struct e1000_rx_ring), GFP_KERNEL); | |
581d708e MC |
1347 | if (!adapter->rx_ring) { |
1348 | kfree(adapter->tx_ring); | |
1349 | return -ENOMEM; | |
1350 | } | |
581d708e | 1351 | |
581d708e MC |
1352 | return E1000_SUCCESS; |
1353 | } | |
1354 | ||
1da177e4 LT |
1355 | /** |
1356 | * e1000_open - Called when a network interface is made active | |
1357 | * @netdev: network interface device structure | |
1358 | * | |
1359 | * Returns 0 on success, negative value on failure | |
1360 | * | |
1361 | * The open entry point is called when a network interface is made | |
1362 | * active by the system (IFF_UP). At this point all resources needed | |
1363 | * for transmit and receive operations are allocated, the interrupt | |
a4010afe | 1364 | * handler is registered with the OS, the watchdog task is started, |
1da177e4 LT |
1365 | * and the stack is notified that the interface is ready. |
1366 | **/ | |
1367 | ||
64798845 | 1368 | static int e1000_open(struct net_device *netdev) |
1da177e4 | 1369 | { |
60490fe0 | 1370 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 1371 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
1372 | int err; |
1373 | ||
2db10a08 | 1374 | /* disallow open during test */ |
1314bbf3 | 1375 | if (test_bit(__E1000_TESTING, &adapter->flags)) |
2db10a08 AK |
1376 | return -EBUSY; |
1377 | ||
eb62efd2 JB |
1378 | netif_carrier_off(netdev); |
1379 | ||
1da177e4 | 1380 | /* allocate transmit descriptors */ |
e0aac5a2 AK |
1381 | err = e1000_setup_all_tx_resources(adapter); |
1382 | if (err) | |
1da177e4 LT |
1383 | goto err_setup_tx; |
1384 | ||
1385 | /* allocate receive descriptors */ | |
e0aac5a2 | 1386 | err = e1000_setup_all_rx_resources(adapter); |
b5bf28cd | 1387 | if (err) |
e0aac5a2 | 1388 | goto err_setup_rx; |
b5bf28cd | 1389 | |
79f05bf0 AK |
1390 | e1000_power_up_phy(adapter); |
1391 | ||
2d7edb92 | 1392 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
1dc32918 | 1393 | if ((hw->mng_cookie.status & |
2d7edb92 MC |
1394 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { |
1395 | e1000_update_mng_vlan(adapter); | |
1396 | } | |
1da177e4 | 1397 | |
e0aac5a2 AK |
1398 | /* before we allocate an interrupt, we must be ready to handle it. |
1399 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt | |
1400 | * as soon as we call pci_request_irq, so we have to setup our | |
1401 | * clean_rx handler before we do so. */ | |
1402 | e1000_configure(adapter); | |
1403 | ||
1404 | err = e1000_request_irq(adapter); | |
1405 | if (err) | |
1406 | goto err_req_irq; | |
1407 | ||
1408 | /* From here on the code is the same as e1000_up() */ | |
1409 | clear_bit(__E1000_DOWN, &adapter->flags); | |
1410 | ||
bea3348e | 1411 | napi_enable(&adapter->napi); |
47313054 | 1412 | |
e0aac5a2 AK |
1413 | e1000_irq_enable(adapter); |
1414 | ||
076152d5 BH |
1415 | netif_start_queue(netdev); |
1416 | ||
e0aac5a2 | 1417 | /* fire a link status change interrupt to start the watchdog */ |
1dc32918 | 1418 | ew32(ICS, E1000_ICS_LSC); |
e0aac5a2 | 1419 | |
1da177e4 LT |
1420 | return E1000_SUCCESS; |
1421 | ||
b5bf28cd | 1422 | err_req_irq: |
e0aac5a2 | 1423 | e1000_power_down_phy(adapter); |
581d708e | 1424 | e1000_free_all_rx_resources(adapter); |
1da177e4 | 1425 | err_setup_rx: |
581d708e | 1426 | e1000_free_all_tx_resources(adapter); |
1da177e4 LT |
1427 | err_setup_tx: |
1428 | e1000_reset(adapter); | |
1429 | ||
1430 | return err; | |
1431 | } | |
1432 | ||
1433 | /** | |
1434 | * e1000_close - Disables a network interface | |
1435 | * @netdev: network interface device structure | |
1436 | * | |
1437 | * Returns 0, this is not allowed to fail | |
1438 | * | |
1439 | * The close entry point is called when an interface is de-activated | |
1440 | * by the OS. The hardware is still under the drivers control, but | |
1441 | * needs to be disabled. A global MAC reset is issued to stop the | |
1442 | * hardware, and all transmit and receive resources are freed. | |
1443 | **/ | |
1444 | ||
64798845 | 1445 | static int e1000_close(struct net_device *netdev) |
1da177e4 | 1446 | { |
60490fe0 | 1447 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 1448 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 1449 | |
2db10a08 | 1450 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
1da177e4 | 1451 | e1000_down(adapter); |
79f05bf0 | 1452 | e1000_power_down_phy(adapter); |
2db10a08 | 1453 | e1000_free_irq(adapter); |
1da177e4 | 1454 | |
581d708e MC |
1455 | e1000_free_all_tx_resources(adapter); |
1456 | e1000_free_all_rx_resources(adapter); | |
1da177e4 | 1457 | |
4666560a BA |
1458 | /* kill manageability vlan ID if supported, but not if a vlan with |
1459 | * the same ID is registered on the host OS (let 8021q kill it) */ | |
1dc32918 | 1460 | if ((hw->mng_cookie.status & |
4666560a | 1461 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
5622e404 | 1462 | !test_bit(adapter->mng_vlan_id, adapter->active_vlans)) { |
2d7edb92 MC |
1463 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
1464 | } | |
b55ccb35 | 1465 | |
1da177e4 LT |
1466 | return 0; |
1467 | } | |
1468 | ||
1469 | /** | |
1470 | * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary | |
1471 | * @adapter: address of board private structure | |
2d7edb92 MC |
1472 | * @start: address of beginning of memory |
1473 | * @len: length of memory | |
1da177e4 | 1474 | **/ |
64798845 JP |
1475 | static bool e1000_check_64k_bound(struct e1000_adapter *adapter, void *start, |
1476 | unsigned long len) | |
1da177e4 | 1477 | { |
1dc32918 | 1478 | struct e1000_hw *hw = &adapter->hw; |
e982f17c | 1479 | unsigned long begin = (unsigned long)start; |
1da177e4 LT |
1480 | unsigned long end = begin + len; |
1481 | ||
2648345f MC |
1482 | /* First rev 82545 and 82546 need to not allow any memory |
1483 | * write location to cross 64k boundary due to errata 23 */ | |
1dc32918 | 1484 | if (hw->mac_type == e1000_82545 || |
5377a416 | 1485 | hw->mac_type == e1000_ce4100 || |
1dc32918 | 1486 | hw->mac_type == e1000_82546) { |
c3033b01 | 1487 | return ((begin ^ (end - 1)) >> 16) != 0 ? false : true; |
1da177e4 LT |
1488 | } |
1489 | ||
c3033b01 | 1490 | return true; |
1da177e4 LT |
1491 | } |
1492 | ||
1493 | /** | |
1494 | * e1000_setup_tx_resources - allocate Tx resources (Descriptors) | |
1495 | * @adapter: board private structure | |
581d708e | 1496 | * @txdr: tx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1497 | * |
1498 | * Return 0 on success, negative on failure | |
1499 | **/ | |
1500 | ||
64798845 JP |
1501 | static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
1502 | struct e1000_tx_ring *txdr) | |
1da177e4 | 1503 | { |
1da177e4 LT |
1504 | struct pci_dev *pdev = adapter->pdev; |
1505 | int size; | |
1506 | ||
1507 | size = sizeof(struct e1000_buffer) * txdr->count; | |
89bf67f1 | 1508 | txdr->buffer_info = vzalloc(size); |
96838a40 | 1509 | if (!txdr->buffer_info) { |
feb8f478 ET |
1510 | e_err(probe, "Unable to allocate memory for the Tx descriptor " |
1511 | "ring\n"); | |
1da177e4 LT |
1512 | return -ENOMEM; |
1513 | } | |
1da177e4 LT |
1514 | |
1515 | /* round up to nearest 4K */ | |
1516 | ||
1517 | txdr->size = txdr->count * sizeof(struct e1000_tx_desc); | |
9099cfb9 | 1518 | txdr->size = ALIGN(txdr->size, 4096); |
1da177e4 | 1519 | |
b16f53be NN |
1520 | txdr->desc = dma_alloc_coherent(&pdev->dev, txdr->size, &txdr->dma, |
1521 | GFP_KERNEL); | |
96838a40 | 1522 | if (!txdr->desc) { |
1da177e4 | 1523 | setup_tx_desc_die: |
1da177e4 | 1524 | vfree(txdr->buffer_info); |
feb8f478 ET |
1525 | e_err(probe, "Unable to allocate memory for the Tx descriptor " |
1526 | "ring\n"); | |
1da177e4 LT |
1527 | return -ENOMEM; |
1528 | } | |
1529 | ||
2648345f | 1530 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1531 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
1532 | void *olddesc = txdr->desc; | |
1533 | dma_addr_t olddma = txdr->dma; | |
feb8f478 | 1534 | e_err(tx_err, "txdr align check failed: %u bytes at %p\n", |
675ad473 | 1535 | txdr->size, txdr->desc); |
2648345f | 1536 | /* Try again, without freeing the previous */ |
b16f53be NN |
1537 | txdr->desc = dma_alloc_coherent(&pdev->dev, txdr->size, |
1538 | &txdr->dma, GFP_KERNEL); | |
2648345f | 1539 | /* Failed allocation, critical failure */ |
96838a40 | 1540 | if (!txdr->desc) { |
b16f53be NN |
1541 | dma_free_coherent(&pdev->dev, txdr->size, olddesc, |
1542 | olddma); | |
1da177e4 LT |
1543 | goto setup_tx_desc_die; |
1544 | } | |
1545 | ||
1546 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { | |
1547 | /* give up */ | |
b16f53be NN |
1548 | dma_free_coherent(&pdev->dev, txdr->size, txdr->desc, |
1549 | txdr->dma); | |
1550 | dma_free_coherent(&pdev->dev, txdr->size, olddesc, | |
1551 | olddma); | |
feb8f478 | 1552 | e_err(probe, "Unable to allocate aligned memory " |
675ad473 | 1553 | "for the transmit descriptor ring\n"); |
1da177e4 LT |
1554 | vfree(txdr->buffer_info); |
1555 | return -ENOMEM; | |
1556 | } else { | |
2648345f | 1557 | /* Free old allocation, new allocation was successful */ |
b16f53be NN |
1558 | dma_free_coherent(&pdev->dev, txdr->size, olddesc, |
1559 | olddma); | |
1da177e4 LT |
1560 | } |
1561 | } | |
1562 | memset(txdr->desc, 0, txdr->size); | |
1563 | ||
1564 | txdr->next_to_use = 0; | |
1565 | txdr->next_to_clean = 0; | |
1566 | ||
1567 | return 0; | |
1568 | } | |
1569 | ||
581d708e MC |
1570 | /** |
1571 | * e1000_setup_all_tx_resources - wrapper to allocate Tx resources | |
1572 | * (Descriptors) for all queues | |
1573 | * @adapter: board private structure | |
1574 | * | |
581d708e MC |
1575 | * Return 0 on success, negative on failure |
1576 | **/ | |
1577 | ||
64798845 | 1578 | int e1000_setup_all_tx_resources(struct e1000_adapter *adapter) |
581d708e MC |
1579 | { |
1580 | int i, err = 0; | |
1581 | ||
f56799ea | 1582 | for (i = 0; i < adapter->num_tx_queues; i++) { |
581d708e MC |
1583 | err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
1584 | if (err) { | |
feb8f478 | 1585 | e_err(probe, "Allocation for Tx Queue %u failed\n", i); |
3fbbc72e VA |
1586 | for (i-- ; i >= 0; i--) |
1587 | e1000_free_tx_resources(adapter, | |
1588 | &adapter->tx_ring[i]); | |
581d708e MC |
1589 | break; |
1590 | } | |
1591 | } | |
1592 | ||
1593 | return err; | |
1594 | } | |
1595 | ||
1da177e4 LT |
1596 | /** |
1597 | * e1000_configure_tx - Configure 8254x Transmit Unit after Reset | |
1598 | * @adapter: board private structure | |
1599 | * | |
1600 | * Configure the Tx unit of the MAC after a reset. | |
1601 | **/ | |
1602 | ||
64798845 | 1603 | static void e1000_configure_tx(struct e1000_adapter *adapter) |
1da177e4 | 1604 | { |
406874a7 | 1605 | u64 tdba; |
581d708e | 1606 | struct e1000_hw *hw = &adapter->hw; |
1532ecea | 1607 | u32 tdlen, tctl, tipg; |
406874a7 | 1608 | u32 ipgr1, ipgr2; |
1da177e4 LT |
1609 | |
1610 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1611 | ||
f56799ea | 1612 | switch (adapter->num_tx_queues) { |
24025e4e MC |
1613 | case 1: |
1614 | default: | |
581d708e MC |
1615 | tdba = adapter->tx_ring[0].dma; |
1616 | tdlen = adapter->tx_ring[0].count * | |
1617 | sizeof(struct e1000_tx_desc); | |
1dc32918 JP |
1618 | ew32(TDLEN, tdlen); |
1619 | ew32(TDBAH, (tdba >> 32)); | |
1620 | ew32(TDBAL, (tdba & 0x00000000ffffffffULL)); | |
1621 | ew32(TDT, 0); | |
1622 | ew32(TDH, 0); | |
6a951698 AK |
1623 | adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH); |
1624 | adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT); | |
24025e4e MC |
1625 | break; |
1626 | } | |
1da177e4 LT |
1627 | |
1628 | /* Set the default values for the Tx Inter Packet Gap timer */ | |
1532ecea | 1629 | if ((hw->media_type == e1000_media_type_fiber || |
d89b6c67 | 1630 | hw->media_type == e1000_media_type_internal_serdes)) |
0fadb059 JK |
1631 | tipg = DEFAULT_82543_TIPG_IPGT_FIBER; |
1632 | else | |
1633 | tipg = DEFAULT_82543_TIPG_IPGT_COPPER; | |
1634 | ||
581d708e | 1635 | switch (hw->mac_type) { |
1da177e4 LT |
1636 | case e1000_82542_rev2_0: |
1637 | case e1000_82542_rev2_1: | |
1638 | tipg = DEFAULT_82542_TIPG_IPGT; | |
0fadb059 JK |
1639 | ipgr1 = DEFAULT_82542_TIPG_IPGR1; |
1640 | ipgr2 = DEFAULT_82542_TIPG_IPGR2; | |
1da177e4 LT |
1641 | break; |
1642 | default: | |
0fadb059 JK |
1643 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
1644 | ipgr2 = DEFAULT_82543_TIPG_IPGR2; | |
1645 | break; | |
1da177e4 | 1646 | } |
0fadb059 JK |
1647 | tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; |
1648 | tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; | |
1dc32918 | 1649 | ew32(TIPG, tipg); |
1da177e4 LT |
1650 | |
1651 | /* Set the Tx Interrupt Delay register */ | |
1652 | ||
1dc32918 | 1653 | ew32(TIDV, adapter->tx_int_delay); |
581d708e | 1654 | if (hw->mac_type >= e1000_82540) |
1dc32918 | 1655 | ew32(TADV, adapter->tx_abs_int_delay); |
1da177e4 LT |
1656 | |
1657 | /* Program the Transmit Control Register */ | |
1658 | ||
1dc32918 | 1659 | tctl = er32(TCTL); |
1da177e4 | 1660 | tctl &= ~E1000_TCTL_CT; |
7e6c9861 | 1661 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
1da177e4 LT |
1662 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
1663 | ||
581d708e | 1664 | e1000_config_collision_dist(hw); |
1da177e4 LT |
1665 | |
1666 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
6a042dab JB |
1667 | adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; |
1668 | ||
1669 | /* only set IDE if we are delaying interrupts using the timers */ | |
1670 | if (adapter->tx_int_delay) | |
1671 | adapter->txd_cmd |= E1000_TXD_CMD_IDE; | |
1da177e4 | 1672 | |
581d708e | 1673 | if (hw->mac_type < e1000_82543) |
1da177e4 LT |
1674 | adapter->txd_cmd |= E1000_TXD_CMD_RPS; |
1675 | else | |
1676 | adapter->txd_cmd |= E1000_TXD_CMD_RS; | |
1677 | ||
1678 | /* Cache if we're 82544 running in PCI-X because we'll | |
1679 | * need this to apply a workaround later in the send path. */ | |
581d708e MC |
1680 | if (hw->mac_type == e1000_82544 && |
1681 | hw->bus_type == e1000_bus_type_pcix) | |
1da177e4 | 1682 | adapter->pcix_82544 = 1; |
7e6c9861 | 1683 | |
1dc32918 | 1684 | ew32(TCTL, tctl); |
7e6c9861 | 1685 | |
1da177e4 LT |
1686 | } |
1687 | ||
1688 | /** | |
1689 | * e1000_setup_rx_resources - allocate Rx resources (Descriptors) | |
1690 | * @adapter: board private structure | |
581d708e | 1691 | * @rxdr: rx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1692 | * |
1693 | * Returns 0 on success, negative on failure | |
1694 | **/ | |
1695 | ||
64798845 JP |
1696 | static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
1697 | struct e1000_rx_ring *rxdr) | |
1da177e4 | 1698 | { |
1da177e4 | 1699 | struct pci_dev *pdev = adapter->pdev; |
2d7edb92 | 1700 | int size, desc_len; |
1da177e4 LT |
1701 | |
1702 | size = sizeof(struct e1000_buffer) * rxdr->count; | |
89bf67f1 | 1703 | rxdr->buffer_info = vzalloc(size); |
581d708e | 1704 | if (!rxdr->buffer_info) { |
feb8f478 ET |
1705 | e_err(probe, "Unable to allocate memory for the Rx descriptor " |
1706 | "ring\n"); | |
1da177e4 LT |
1707 | return -ENOMEM; |
1708 | } | |
1da177e4 | 1709 | |
1532ecea | 1710 | desc_len = sizeof(struct e1000_rx_desc); |
2d7edb92 | 1711 | |
1da177e4 LT |
1712 | /* Round up to nearest 4K */ |
1713 | ||
2d7edb92 | 1714 | rxdr->size = rxdr->count * desc_len; |
9099cfb9 | 1715 | rxdr->size = ALIGN(rxdr->size, 4096); |
1da177e4 | 1716 | |
b16f53be NN |
1717 | rxdr->desc = dma_alloc_coherent(&pdev->dev, rxdr->size, &rxdr->dma, |
1718 | GFP_KERNEL); | |
1da177e4 | 1719 | |
581d708e | 1720 | if (!rxdr->desc) { |
feb8f478 ET |
1721 | e_err(probe, "Unable to allocate memory for the Rx descriptor " |
1722 | "ring\n"); | |
1da177e4 | 1723 | setup_rx_desc_die: |
1da177e4 LT |
1724 | vfree(rxdr->buffer_info); |
1725 | return -ENOMEM; | |
1726 | } | |
1727 | ||
2648345f | 1728 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1729 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
1730 | void *olddesc = rxdr->desc; | |
1731 | dma_addr_t olddma = rxdr->dma; | |
feb8f478 | 1732 | e_err(rx_err, "rxdr align check failed: %u bytes at %p\n", |
675ad473 | 1733 | rxdr->size, rxdr->desc); |
2648345f | 1734 | /* Try again, without freeing the previous */ |
b16f53be NN |
1735 | rxdr->desc = dma_alloc_coherent(&pdev->dev, rxdr->size, |
1736 | &rxdr->dma, GFP_KERNEL); | |
2648345f | 1737 | /* Failed allocation, critical failure */ |
581d708e | 1738 | if (!rxdr->desc) { |
b16f53be NN |
1739 | dma_free_coherent(&pdev->dev, rxdr->size, olddesc, |
1740 | olddma); | |
feb8f478 ET |
1741 | e_err(probe, "Unable to allocate memory for the Rx " |
1742 | "descriptor ring\n"); | |
1da177e4 LT |
1743 | goto setup_rx_desc_die; |
1744 | } | |
1745 | ||
1746 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { | |
1747 | /* give up */ | |
b16f53be NN |
1748 | dma_free_coherent(&pdev->dev, rxdr->size, rxdr->desc, |
1749 | rxdr->dma); | |
1750 | dma_free_coherent(&pdev->dev, rxdr->size, olddesc, | |
1751 | olddma); | |
feb8f478 ET |
1752 | e_err(probe, "Unable to allocate aligned memory for " |
1753 | "the Rx descriptor ring\n"); | |
581d708e | 1754 | goto setup_rx_desc_die; |
1da177e4 | 1755 | } else { |
2648345f | 1756 | /* Free old allocation, new allocation was successful */ |
b16f53be NN |
1757 | dma_free_coherent(&pdev->dev, rxdr->size, olddesc, |
1758 | olddma); | |
1da177e4 LT |
1759 | } |
1760 | } | |
1761 | memset(rxdr->desc, 0, rxdr->size); | |
1762 | ||
1763 | rxdr->next_to_clean = 0; | |
1764 | rxdr->next_to_use = 0; | |
edbbb3ca | 1765 | rxdr->rx_skb_top = NULL; |
1da177e4 LT |
1766 | |
1767 | return 0; | |
1768 | } | |
1769 | ||
581d708e MC |
1770 | /** |
1771 | * e1000_setup_all_rx_resources - wrapper to allocate Rx resources | |
1772 | * (Descriptors) for all queues | |
1773 | * @adapter: board private structure | |
1774 | * | |
581d708e MC |
1775 | * Return 0 on success, negative on failure |
1776 | **/ | |
1777 | ||
64798845 | 1778 | int e1000_setup_all_rx_resources(struct e1000_adapter *adapter) |
581d708e MC |
1779 | { |
1780 | int i, err = 0; | |
1781 | ||
f56799ea | 1782 | for (i = 0; i < adapter->num_rx_queues; i++) { |
581d708e MC |
1783 | err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
1784 | if (err) { | |
feb8f478 | 1785 | e_err(probe, "Allocation for Rx Queue %u failed\n", i); |
3fbbc72e VA |
1786 | for (i-- ; i >= 0; i--) |
1787 | e1000_free_rx_resources(adapter, | |
1788 | &adapter->rx_ring[i]); | |
581d708e MC |
1789 | break; |
1790 | } | |
1791 | } | |
1792 | ||
1793 | return err; | |
1794 | } | |
1795 | ||
1da177e4 | 1796 | /** |
2648345f | 1797 | * e1000_setup_rctl - configure the receive control registers |
1da177e4 LT |
1798 | * @adapter: Board private structure |
1799 | **/ | |
64798845 | 1800 | static void e1000_setup_rctl(struct e1000_adapter *adapter) |
1da177e4 | 1801 | { |
1dc32918 | 1802 | struct e1000_hw *hw = &adapter->hw; |
630b25cd | 1803 | u32 rctl; |
1da177e4 | 1804 | |
1dc32918 | 1805 | rctl = er32(RCTL); |
1da177e4 LT |
1806 | |
1807 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
1808 | ||
d5bc77a2 DN |
1809 | rctl |= E1000_RCTL_BAM | E1000_RCTL_LBM_NO | |
1810 | E1000_RCTL_RDMTS_HALF | | |
1dc32918 | 1811 | (hw->mc_filter_type << E1000_RCTL_MO_SHIFT); |
1da177e4 | 1812 | |
1dc32918 | 1813 | if (hw->tbi_compatibility_on == 1) |
1da177e4 LT |
1814 | rctl |= E1000_RCTL_SBP; |
1815 | else | |
1816 | rctl &= ~E1000_RCTL_SBP; | |
1817 | ||
2d7edb92 MC |
1818 | if (adapter->netdev->mtu <= ETH_DATA_LEN) |
1819 | rctl &= ~E1000_RCTL_LPE; | |
1820 | else | |
1821 | rctl |= E1000_RCTL_LPE; | |
1822 | ||
1da177e4 | 1823 | /* Setup buffer sizes */ |
9e2feace AK |
1824 | rctl &= ~E1000_RCTL_SZ_4096; |
1825 | rctl |= E1000_RCTL_BSEX; | |
1826 | switch (adapter->rx_buffer_len) { | |
a1415ee6 JK |
1827 | case E1000_RXBUFFER_2048: |
1828 | default: | |
1829 | rctl |= E1000_RCTL_SZ_2048; | |
1830 | rctl &= ~E1000_RCTL_BSEX; | |
1831 | break; | |
1832 | case E1000_RXBUFFER_4096: | |
1833 | rctl |= E1000_RCTL_SZ_4096; | |
1834 | break; | |
1835 | case E1000_RXBUFFER_8192: | |
1836 | rctl |= E1000_RCTL_SZ_8192; | |
1837 | break; | |
1838 | case E1000_RXBUFFER_16384: | |
1839 | rctl |= E1000_RCTL_SZ_16384; | |
1840 | break; | |
2d7edb92 MC |
1841 | } |
1842 | ||
1dc32918 | 1843 | ew32(RCTL, rctl); |
1da177e4 LT |
1844 | } |
1845 | ||
1846 | /** | |
1847 | * e1000_configure_rx - Configure 8254x Receive Unit after Reset | |
1848 | * @adapter: board private structure | |
1849 | * | |
1850 | * Configure the Rx unit of the MAC after a reset. | |
1851 | **/ | |
1852 | ||
64798845 | 1853 | static void e1000_configure_rx(struct e1000_adapter *adapter) |
1da177e4 | 1854 | { |
406874a7 | 1855 | u64 rdba; |
581d708e | 1856 | struct e1000_hw *hw = &adapter->hw; |
1532ecea | 1857 | u32 rdlen, rctl, rxcsum; |
2d7edb92 | 1858 | |
edbbb3ca JB |
1859 | if (adapter->netdev->mtu > ETH_DATA_LEN) { |
1860 | rdlen = adapter->rx_ring[0].count * | |
1861 | sizeof(struct e1000_rx_desc); | |
1862 | adapter->clean_rx = e1000_clean_jumbo_rx_irq; | |
1863 | adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers; | |
1864 | } else { | |
1865 | rdlen = adapter->rx_ring[0].count * | |
1866 | sizeof(struct e1000_rx_desc); | |
1867 | adapter->clean_rx = e1000_clean_rx_irq; | |
1868 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers; | |
1869 | } | |
1da177e4 LT |
1870 | |
1871 | /* disable receives while setting up the descriptors */ | |
1dc32918 JP |
1872 | rctl = er32(RCTL); |
1873 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
1da177e4 LT |
1874 | |
1875 | /* set the Receive Delay Timer Register */ | |
1dc32918 | 1876 | ew32(RDTR, adapter->rx_int_delay); |
1da177e4 | 1877 | |
581d708e | 1878 | if (hw->mac_type >= e1000_82540) { |
1dc32918 | 1879 | ew32(RADV, adapter->rx_abs_int_delay); |
835bb129 | 1880 | if (adapter->itr_setting != 0) |
1dc32918 | 1881 | ew32(ITR, 1000000000 / (adapter->itr * 256)); |
1da177e4 LT |
1882 | } |
1883 | ||
581d708e MC |
1884 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
1885 | * the Base and Length of the Rx Descriptor Ring */ | |
f56799ea | 1886 | switch (adapter->num_rx_queues) { |
24025e4e MC |
1887 | case 1: |
1888 | default: | |
581d708e | 1889 | rdba = adapter->rx_ring[0].dma; |
1dc32918 JP |
1890 | ew32(RDLEN, rdlen); |
1891 | ew32(RDBAH, (rdba >> 32)); | |
1892 | ew32(RDBAL, (rdba & 0x00000000ffffffffULL)); | |
1893 | ew32(RDT, 0); | |
1894 | ew32(RDH, 0); | |
6a951698 AK |
1895 | adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH); |
1896 | adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT); | |
581d708e | 1897 | break; |
24025e4e MC |
1898 | } |
1899 | ||
1da177e4 | 1900 | /* Enable 82543 Receive Checksum Offload for TCP and UDP */ |
581d708e | 1901 | if (hw->mac_type >= e1000_82543) { |
1dc32918 | 1902 | rxcsum = er32(RXCSUM); |
630b25cd | 1903 | if (adapter->rx_csum) |
2d7edb92 | 1904 | rxcsum |= E1000_RXCSUM_TUOFL; |
630b25cd | 1905 | else |
2d7edb92 | 1906 | /* don't need to clear IPPCSE as it defaults to 0 */ |
630b25cd | 1907 | rxcsum &= ~E1000_RXCSUM_TUOFL; |
1dc32918 | 1908 | ew32(RXCSUM, rxcsum); |
1da177e4 LT |
1909 | } |
1910 | ||
1911 | /* Enable Receives */ | |
d5bc77a2 | 1912 | ew32(RCTL, rctl | E1000_RCTL_EN); |
1da177e4 LT |
1913 | } |
1914 | ||
1915 | /** | |
581d708e | 1916 | * e1000_free_tx_resources - Free Tx Resources per Queue |
1da177e4 | 1917 | * @adapter: board private structure |
581d708e | 1918 | * @tx_ring: Tx descriptor ring for a specific queue |
1da177e4 LT |
1919 | * |
1920 | * Free all transmit software resources | |
1921 | **/ | |
1922 | ||
64798845 JP |
1923 | static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
1924 | struct e1000_tx_ring *tx_ring) | |
1da177e4 LT |
1925 | { |
1926 | struct pci_dev *pdev = adapter->pdev; | |
1927 | ||
581d708e | 1928 | e1000_clean_tx_ring(adapter, tx_ring); |
1da177e4 | 1929 | |
581d708e MC |
1930 | vfree(tx_ring->buffer_info); |
1931 | tx_ring->buffer_info = NULL; | |
1da177e4 | 1932 | |
b16f53be NN |
1933 | dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, |
1934 | tx_ring->dma); | |
1da177e4 | 1935 | |
581d708e MC |
1936 | tx_ring->desc = NULL; |
1937 | } | |
1938 | ||
1939 | /** | |
1940 | * e1000_free_all_tx_resources - Free Tx Resources for All Queues | |
1941 | * @adapter: board private structure | |
1942 | * | |
1943 | * Free all transmit software resources | |
1944 | **/ | |
1945 | ||
64798845 | 1946 | void e1000_free_all_tx_resources(struct e1000_adapter *adapter) |
581d708e MC |
1947 | { |
1948 | int i; | |
1949 | ||
f56799ea | 1950 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 1951 | e1000_free_tx_resources(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
1952 | } |
1953 | ||
64798845 JP |
1954 | static void e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, |
1955 | struct e1000_buffer *buffer_info) | |
1da177e4 | 1956 | { |
602c0554 AD |
1957 | if (buffer_info->dma) { |
1958 | if (buffer_info->mapped_as_page) | |
b16f53be NN |
1959 | dma_unmap_page(&adapter->pdev->dev, buffer_info->dma, |
1960 | buffer_info->length, DMA_TO_DEVICE); | |
602c0554 | 1961 | else |
b16f53be | 1962 | dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, |
602c0554 | 1963 | buffer_info->length, |
b16f53be | 1964 | DMA_TO_DEVICE); |
602c0554 AD |
1965 | buffer_info->dma = 0; |
1966 | } | |
a9ebadd6 | 1967 | if (buffer_info->skb) { |
1da177e4 | 1968 | dev_kfree_skb_any(buffer_info->skb); |
a9ebadd6 JB |
1969 | buffer_info->skb = NULL; |
1970 | } | |
37e73df8 | 1971 | buffer_info->time_stamp = 0; |
a9ebadd6 | 1972 | /* buffer_info must be completely set up in the transmit path */ |
1da177e4 LT |
1973 | } |
1974 | ||
1975 | /** | |
1976 | * e1000_clean_tx_ring - Free Tx Buffers | |
1977 | * @adapter: board private structure | |
581d708e | 1978 | * @tx_ring: ring to be cleaned |
1da177e4 LT |
1979 | **/ |
1980 | ||
64798845 JP |
1981 | static void e1000_clean_tx_ring(struct e1000_adapter *adapter, |
1982 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 1983 | { |
1dc32918 | 1984 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
1985 | struct e1000_buffer *buffer_info; |
1986 | unsigned long size; | |
1987 | unsigned int i; | |
1988 | ||
1989 | /* Free all the Tx ring sk_buffs */ | |
1990 | ||
96838a40 | 1991 | for (i = 0; i < tx_ring->count; i++) { |
1da177e4 LT |
1992 | buffer_info = &tx_ring->buffer_info[i]; |
1993 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); | |
1994 | } | |
1995 | ||
1996 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
1997 | memset(tx_ring->buffer_info, 0, size); | |
1998 | ||
1999 | /* Zero out the descriptor ring */ | |
2000 | ||
2001 | memset(tx_ring->desc, 0, tx_ring->size); | |
2002 | ||
2003 | tx_ring->next_to_use = 0; | |
2004 | tx_ring->next_to_clean = 0; | |
fd803241 | 2005 | tx_ring->last_tx_tso = 0; |
1da177e4 | 2006 | |
1dc32918 JP |
2007 | writel(0, hw->hw_addr + tx_ring->tdh); |
2008 | writel(0, hw->hw_addr + tx_ring->tdt); | |
581d708e MC |
2009 | } |
2010 | ||
2011 | /** | |
2012 | * e1000_clean_all_tx_rings - Free Tx Buffers for all queues | |
2013 | * @adapter: board private structure | |
2014 | **/ | |
2015 | ||
64798845 | 2016 | static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter) |
581d708e MC |
2017 | { |
2018 | int i; | |
2019 | ||
f56799ea | 2020 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 2021 | e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
2022 | } |
2023 | ||
2024 | /** | |
2025 | * e1000_free_rx_resources - Free Rx Resources | |
2026 | * @adapter: board private structure | |
581d708e | 2027 | * @rx_ring: ring to clean the resources from |
1da177e4 LT |
2028 | * |
2029 | * Free all receive software resources | |
2030 | **/ | |
2031 | ||
64798845 JP |
2032 | static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
2033 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 2034 | { |
1da177e4 LT |
2035 | struct pci_dev *pdev = adapter->pdev; |
2036 | ||
581d708e | 2037 | e1000_clean_rx_ring(adapter, rx_ring); |
1da177e4 LT |
2038 | |
2039 | vfree(rx_ring->buffer_info); | |
2040 | rx_ring->buffer_info = NULL; | |
2041 | ||
b16f53be NN |
2042 | dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, |
2043 | rx_ring->dma); | |
1da177e4 LT |
2044 | |
2045 | rx_ring->desc = NULL; | |
2046 | } | |
2047 | ||
2048 | /** | |
581d708e | 2049 | * e1000_free_all_rx_resources - Free Rx Resources for All Queues |
1da177e4 | 2050 | * @adapter: board private structure |
581d708e MC |
2051 | * |
2052 | * Free all receive software resources | |
2053 | **/ | |
2054 | ||
64798845 | 2055 | void e1000_free_all_rx_resources(struct e1000_adapter *adapter) |
581d708e MC |
2056 | { |
2057 | int i; | |
2058 | ||
f56799ea | 2059 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e MC |
2060 | e1000_free_rx_resources(adapter, &adapter->rx_ring[i]); |
2061 | } | |
2062 | ||
2063 | /** | |
2064 | * e1000_clean_rx_ring - Free Rx Buffers per Queue | |
2065 | * @adapter: board private structure | |
2066 | * @rx_ring: ring to free buffers from | |
1da177e4 LT |
2067 | **/ |
2068 | ||
64798845 JP |
2069 | static void e1000_clean_rx_ring(struct e1000_adapter *adapter, |
2070 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 2071 | { |
1dc32918 | 2072 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
2073 | struct e1000_buffer *buffer_info; |
2074 | struct pci_dev *pdev = adapter->pdev; | |
2075 | unsigned long size; | |
630b25cd | 2076 | unsigned int i; |
1da177e4 LT |
2077 | |
2078 | /* Free all the Rx ring sk_buffs */ | |
96838a40 | 2079 | for (i = 0; i < rx_ring->count; i++) { |
1da177e4 | 2080 | buffer_info = &rx_ring->buffer_info[i]; |
edbbb3ca JB |
2081 | if (buffer_info->dma && |
2082 | adapter->clean_rx == e1000_clean_rx_irq) { | |
b16f53be | 2083 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
edbbb3ca | 2084 | buffer_info->length, |
b16f53be | 2085 | DMA_FROM_DEVICE); |
edbbb3ca JB |
2086 | } else if (buffer_info->dma && |
2087 | adapter->clean_rx == e1000_clean_jumbo_rx_irq) { | |
b16f53be NN |
2088 | dma_unmap_page(&pdev->dev, buffer_info->dma, |
2089 | buffer_info->length, | |
2090 | DMA_FROM_DEVICE); | |
679be3ba | 2091 | } |
1da177e4 | 2092 | |
679be3ba | 2093 | buffer_info->dma = 0; |
edbbb3ca JB |
2094 | if (buffer_info->page) { |
2095 | put_page(buffer_info->page); | |
2096 | buffer_info->page = NULL; | |
2097 | } | |
679be3ba | 2098 | if (buffer_info->skb) { |
1da177e4 LT |
2099 | dev_kfree_skb(buffer_info->skb); |
2100 | buffer_info->skb = NULL; | |
997f5cbd | 2101 | } |
1da177e4 LT |
2102 | } |
2103 | ||
edbbb3ca JB |
2104 | /* there also may be some cached data from a chained receive */ |
2105 | if (rx_ring->rx_skb_top) { | |
2106 | dev_kfree_skb(rx_ring->rx_skb_top); | |
2107 | rx_ring->rx_skb_top = NULL; | |
2108 | } | |
2109 | ||
1da177e4 LT |
2110 | size = sizeof(struct e1000_buffer) * rx_ring->count; |
2111 | memset(rx_ring->buffer_info, 0, size); | |
2112 | ||
2113 | /* Zero out the descriptor ring */ | |
1da177e4 LT |
2114 | memset(rx_ring->desc, 0, rx_ring->size); |
2115 | ||
2116 | rx_ring->next_to_clean = 0; | |
2117 | rx_ring->next_to_use = 0; | |
2118 | ||
1dc32918 JP |
2119 | writel(0, hw->hw_addr + rx_ring->rdh); |
2120 | writel(0, hw->hw_addr + rx_ring->rdt); | |
581d708e MC |
2121 | } |
2122 | ||
2123 | /** | |
2124 | * e1000_clean_all_rx_rings - Free Rx Buffers for all queues | |
2125 | * @adapter: board private structure | |
2126 | **/ | |
2127 | ||
64798845 | 2128 | static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter) |
581d708e MC |
2129 | { |
2130 | int i; | |
2131 | ||
f56799ea | 2132 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e | 2133 | e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]); |
1da177e4 LT |
2134 | } |
2135 | ||
2136 | /* The 82542 2.0 (revision 2) needs to have the receive unit in reset | |
2137 | * and memory write and invalidate disabled for certain operations | |
2138 | */ | |
64798845 | 2139 | static void e1000_enter_82542_rst(struct e1000_adapter *adapter) |
1da177e4 | 2140 | { |
1dc32918 | 2141 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 2142 | struct net_device *netdev = adapter->netdev; |
406874a7 | 2143 | u32 rctl; |
1da177e4 | 2144 | |
1dc32918 | 2145 | e1000_pci_clear_mwi(hw); |
1da177e4 | 2146 | |
1dc32918 | 2147 | rctl = er32(RCTL); |
1da177e4 | 2148 | rctl |= E1000_RCTL_RST; |
1dc32918 JP |
2149 | ew32(RCTL, rctl); |
2150 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
2151 | mdelay(5); |
2152 | ||
96838a40 | 2153 | if (netif_running(netdev)) |
581d708e | 2154 | e1000_clean_all_rx_rings(adapter); |
1da177e4 LT |
2155 | } |
2156 | ||
64798845 | 2157 | static void e1000_leave_82542_rst(struct e1000_adapter *adapter) |
1da177e4 | 2158 | { |
1dc32918 | 2159 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 2160 | struct net_device *netdev = adapter->netdev; |
406874a7 | 2161 | u32 rctl; |
1da177e4 | 2162 | |
1dc32918 | 2163 | rctl = er32(RCTL); |
1da177e4 | 2164 | rctl &= ~E1000_RCTL_RST; |
1dc32918 JP |
2165 | ew32(RCTL, rctl); |
2166 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
2167 | mdelay(5); |
2168 | ||
1dc32918 JP |
2169 | if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE) |
2170 | e1000_pci_set_mwi(hw); | |
1da177e4 | 2171 | |
96838a40 | 2172 | if (netif_running(netdev)) { |
72d64a43 JK |
2173 | /* No need to loop, because 82542 supports only 1 queue */ |
2174 | struct e1000_rx_ring *ring = &adapter->rx_ring[0]; | |
7c4d3367 | 2175 | e1000_configure_rx(adapter); |
72d64a43 | 2176 | adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring)); |
1da177e4 LT |
2177 | } |
2178 | } | |
2179 | ||
2180 | /** | |
2181 | * e1000_set_mac - Change the Ethernet Address of the NIC | |
2182 | * @netdev: network interface device structure | |
2183 | * @p: pointer to an address structure | |
2184 | * | |
2185 | * Returns 0 on success, negative on failure | |
2186 | **/ | |
2187 | ||
64798845 | 2188 | static int e1000_set_mac(struct net_device *netdev, void *p) |
1da177e4 | 2189 | { |
60490fe0 | 2190 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 2191 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
2192 | struct sockaddr *addr = p; |
2193 | ||
96838a40 | 2194 | if (!is_valid_ether_addr(addr->sa_data)) |
1da177e4 LT |
2195 | return -EADDRNOTAVAIL; |
2196 | ||
2197 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2198 | ||
1dc32918 | 2199 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2200 | e1000_enter_82542_rst(adapter); |
2201 | ||
2202 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
1dc32918 | 2203 | memcpy(hw->mac_addr, addr->sa_data, netdev->addr_len); |
1da177e4 | 2204 | |
1dc32918 | 2205 | e1000_rar_set(hw, hw->mac_addr, 0); |
1da177e4 | 2206 | |
1dc32918 | 2207 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2208 | e1000_leave_82542_rst(adapter); |
2209 | ||
2210 | return 0; | |
2211 | } | |
2212 | ||
2213 | /** | |
db0ce50d | 2214 | * e1000_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set |
1da177e4 LT |
2215 | * @netdev: network interface device structure |
2216 | * | |
db0ce50d PM |
2217 | * The set_rx_mode entry point is called whenever the unicast or multicast |
2218 | * address lists or the network interface flags are updated. This routine is | |
2219 | * responsible for configuring the hardware for proper unicast, multicast, | |
1da177e4 LT |
2220 | * promiscuous mode, and all-multi behavior. |
2221 | **/ | |
2222 | ||
64798845 | 2223 | static void e1000_set_rx_mode(struct net_device *netdev) |
1da177e4 | 2224 | { |
60490fe0 | 2225 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 2226 | struct e1000_hw *hw = &adapter->hw; |
ccffad25 JP |
2227 | struct netdev_hw_addr *ha; |
2228 | bool use_uc = false; | |
406874a7 JP |
2229 | u32 rctl; |
2230 | u32 hash_value; | |
868d5309 | 2231 | int i, rar_entries = E1000_RAR_ENTRIES; |
1532ecea | 2232 | int mta_reg_count = E1000_NUM_MTA_REGISTERS; |
81c52285 JB |
2233 | u32 *mcarray = kcalloc(mta_reg_count, sizeof(u32), GFP_ATOMIC); |
2234 | ||
2235 | if (!mcarray) { | |
feb8f478 | 2236 | e_err(probe, "memory allocation failed\n"); |
81c52285 JB |
2237 | return; |
2238 | } | |
cd94dd0b | 2239 | |
2648345f MC |
2240 | /* Check for Promiscuous and All Multicast modes */ |
2241 | ||
1dc32918 | 2242 | rctl = er32(RCTL); |
1da177e4 | 2243 | |
96838a40 | 2244 | if (netdev->flags & IFF_PROMISC) { |
1da177e4 | 2245 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
746b9f02 | 2246 | rctl &= ~E1000_RCTL_VFE; |
1da177e4 | 2247 | } else { |
1532ecea | 2248 | if (netdev->flags & IFF_ALLMULTI) |
746b9f02 | 2249 | rctl |= E1000_RCTL_MPE; |
1532ecea | 2250 | else |
746b9f02 | 2251 | rctl &= ~E1000_RCTL_MPE; |
1532ecea | 2252 | /* Enable VLAN filter if there is a VLAN */ |
5622e404 | 2253 | if (e1000_vlan_used(adapter)) |
1532ecea | 2254 | rctl |= E1000_RCTL_VFE; |
db0ce50d PM |
2255 | } |
2256 | ||
32e7bfc4 | 2257 | if (netdev_uc_count(netdev) > rar_entries - 1) { |
db0ce50d PM |
2258 | rctl |= E1000_RCTL_UPE; |
2259 | } else if (!(netdev->flags & IFF_PROMISC)) { | |
2260 | rctl &= ~E1000_RCTL_UPE; | |
ccffad25 | 2261 | use_uc = true; |
1da177e4 LT |
2262 | } |
2263 | ||
1dc32918 | 2264 | ew32(RCTL, rctl); |
1da177e4 LT |
2265 | |
2266 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2267 | ||
96838a40 | 2268 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2269 | e1000_enter_82542_rst(adapter); |
2270 | ||
db0ce50d PM |
2271 | /* load the first 14 addresses into the exact filters 1-14. Unicast |
2272 | * addresses take precedence to avoid disabling unicast filtering | |
2273 | * when possible. | |
2274 | * | |
b595076a | 2275 | * RAR 0 is used for the station MAC address |
1da177e4 LT |
2276 | * if there are not 14 addresses, go ahead and clear the filters |
2277 | */ | |
ccffad25 JP |
2278 | i = 1; |
2279 | if (use_uc) | |
32e7bfc4 | 2280 | netdev_for_each_uc_addr(ha, netdev) { |
ccffad25 JP |
2281 | if (i == rar_entries) |
2282 | break; | |
2283 | e1000_rar_set(hw, ha->addr, i++); | |
2284 | } | |
2285 | ||
22bedad3 | 2286 | netdev_for_each_mc_addr(ha, netdev) { |
7a81e9f3 JP |
2287 | if (i == rar_entries) { |
2288 | /* load any remaining addresses into the hash table */ | |
2289 | u32 hash_reg, hash_bit, mta; | |
22bedad3 | 2290 | hash_value = e1000_hash_mc_addr(hw, ha->addr); |
7a81e9f3 JP |
2291 | hash_reg = (hash_value >> 5) & 0x7F; |
2292 | hash_bit = hash_value & 0x1F; | |
2293 | mta = (1 << hash_bit); | |
2294 | mcarray[hash_reg] |= mta; | |
10886af5 | 2295 | } else { |
22bedad3 | 2296 | e1000_rar_set(hw, ha->addr, i++); |
1da177e4 LT |
2297 | } |
2298 | } | |
2299 | ||
7a81e9f3 JP |
2300 | for (; i < rar_entries; i++) { |
2301 | E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); | |
2302 | E1000_WRITE_FLUSH(); | |
2303 | E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); | |
2304 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
2305 | } |
2306 | ||
81c52285 JB |
2307 | /* write the hash table completely, write from bottom to avoid |
2308 | * both stupid write combining chipsets, and flushing each write */ | |
2309 | for (i = mta_reg_count - 1; i >= 0 ; i--) { | |
2310 | /* | |
2311 | * If we are on an 82544 has an errata where writing odd | |
2312 | * offsets overwrites the previous even offset, but writing | |
2313 | * backwards over the range solves the issue by always | |
2314 | * writing the odd offset first | |
2315 | */ | |
2316 | E1000_WRITE_REG_ARRAY(hw, MTA, i, mcarray[i]); | |
2317 | } | |
2318 | E1000_WRITE_FLUSH(); | |
2319 | ||
96838a40 | 2320 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 | 2321 | e1000_leave_82542_rst(adapter); |
81c52285 JB |
2322 | |
2323 | kfree(mcarray); | |
1da177e4 LT |
2324 | } |
2325 | ||
a4010afe JB |
2326 | /** |
2327 | * e1000_update_phy_info_task - get phy info | |
2328 | * @work: work struct contained inside adapter struct | |
2329 | * | |
2330 | * Need to wait a few seconds after link up to get diagnostic information from | |
2331 | * the phy | |
2332 | */ | |
5cf42fcd JB |
2333 | static void e1000_update_phy_info_task(struct work_struct *work) |
2334 | { | |
2335 | struct e1000_adapter *adapter = container_of(work, | |
a4010afe JB |
2336 | struct e1000_adapter, |
2337 | phy_info_task.work); | |
0ef4eedc JB |
2338 | if (test_bit(__E1000_DOWN, &adapter->flags)) |
2339 | return; | |
2340 | mutex_lock(&adapter->mutex); | |
a4010afe | 2341 | e1000_phy_get_info(&adapter->hw, &adapter->phy_info); |
0ef4eedc | 2342 | mutex_unlock(&adapter->mutex); |
1da177e4 LT |
2343 | } |
2344 | ||
5cf42fcd JB |
2345 | /** |
2346 | * e1000_82547_tx_fifo_stall_task - task to complete work | |
2347 | * @work: work struct contained inside adapter struct | |
2348 | **/ | |
2349 | static void e1000_82547_tx_fifo_stall_task(struct work_struct *work) | |
2350 | { | |
2351 | struct e1000_adapter *adapter = container_of(work, | |
a4010afe JB |
2352 | struct e1000_adapter, |
2353 | fifo_stall_task.work); | |
1dc32918 | 2354 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 2355 | struct net_device *netdev = adapter->netdev; |
406874a7 | 2356 | u32 tctl; |
1da177e4 | 2357 | |
0ef4eedc JB |
2358 | if (test_bit(__E1000_DOWN, &adapter->flags)) |
2359 | return; | |
2360 | mutex_lock(&adapter->mutex); | |
96838a40 | 2361 | if (atomic_read(&adapter->tx_fifo_stall)) { |
1dc32918 JP |
2362 | if ((er32(TDT) == er32(TDH)) && |
2363 | (er32(TDFT) == er32(TDFH)) && | |
2364 | (er32(TDFTS) == er32(TDFHS))) { | |
2365 | tctl = er32(TCTL); | |
2366 | ew32(TCTL, tctl & ~E1000_TCTL_EN); | |
2367 | ew32(TDFT, adapter->tx_head_addr); | |
2368 | ew32(TDFH, adapter->tx_head_addr); | |
2369 | ew32(TDFTS, adapter->tx_head_addr); | |
2370 | ew32(TDFHS, adapter->tx_head_addr); | |
2371 | ew32(TCTL, tctl); | |
2372 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
2373 | |
2374 | adapter->tx_fifo_head = 0; | |
2375 | atomic_set(&adapter->tx_fifo_stall, 0); | |
2376 | netif_wake_queue(netdev); | |
baa34745 | 2377 | } else if (!test_bit(__E1000_DOWN, &adapter->flags)) { |
a4010afe | 2378 | schedule_delayed_work(&adapter->fifo_stall_task, 1); |
1da177e4 LT |
2379 | } |
2380 | } | |
0ef4eedc | 2381 | mutex_unlock(&adapter->mutex); |
1da177e4 LT |
2382 | } |
2383 | ||
b548192a | 2384 | bool e1000_has_link(struct e1000_adapter *adapter) |
be0f0719 JB |
2385 | { |
2386 | struct e1000_hw *hw = &adapter->hw; | |
2387 | bool link_active = false; | |
be0f0719 | 2388 | |
6d9e5130 NS |
2389 | /* get_link_status is set on LSC (link status) interrupt or rx |
2390 | * sequence error interrupt (except on intel ce4100). | |
2391 | * get_link_status will stay false until the | |
2392 | * e1000_check_for_link establishes link for copper adapters | |
2393 | * ONLY | |
be0f0719 JB |
2394 | */ |
2395 | switch (hw->media_type) { | |
2396 | case e1000_media_type_copper: | |
6d9e5130 NS |
2397 | if (hw->mac_type == e1000_ce4100) |
2398 | hw->get_link_status = 1; | |
be0f0719 | 2399 | if (hw->get_link_status) { |
120a5d0d | 2400 | e1000_check_for_link(hw); |
be0f0719 JB |
2401 | link_active = !hw->get_link_status; |
2402 | } else { | |
2403 | link_active = true; | |
2404 | } | |
2405 | break; | |
2406 | case e1000_media_type_fiber: | |
120a5d0d | 2407 | e1000_check_for_link(hw); |
be0f0719 JB |
2408 | link_active = !!(er32(STATUS) & E1000_STATUS_LU); |
2409 | break; | |
2410 | case e1000_media_type_internal_serdes: | |
120a5d0d | 2411 | e1000_check_for_link(hw); |
be0f0719 JB |
2412 | link_active = hw->serdes_has_link; |
2413 | break; | |
2414 | default: | |
2415 | break; | |
2416 | } | |
2417 | ||
2418 | return link_active; | |
2419 | } | |
2420 | ||
1da177e4 | 2421 | /** |
a4010afe JB |
2422 | * e1000_watchdog - work function |
2423 | * @work: work struct contained inside adapter struct | |
1da177e4 | 2424 | **/ |
a4010afe | 2425 | static void e1000_watchdog(struct work_struct *work) |
1da177e4 | 2426 | { |
a4010afe JB |
2427 | struct e1000_adapter *adapter = container_of(work, |
2428 | struct e1000_adapter, | |
2429 | watchdog_task.work); | |
1dc32918 | 2430 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 2431 | struct net_device *netdev = adapter->netdev; |
545c67c0 | 2432 | struct e1000_tx_ring *txdr = adapter->tx_ring; |
406874a7 | 2433 | u32 link, tctl; |
90fb5135 | 2434 | |
0ef4eedc JB |
2435 | if (test_bit(__E1000_DOWN, &adapter->flags)) |
2436 | return; | |
2437 | ||
2438 | mutex_lock(&adapter->mutex); | |
be0f0719 JB |
2439 | link = e1000_has_link(adapter); |
2440 | if ((netif_carrier_ok(netdev)) && link) | |
2441 | goto link_up; | |
1da177e4 | 2442 | |
96838a40 JB |
2443 | if (link) { |
2444 | if (!netif_carrier_ok(netdev)) { | |
406874a7 | 2445 | u32 ctrl; |
c3033b01 | 2446 | bool txb2b = true; |
be0f0719 | 2447 | /* update snapshot of PHY registers on LSC */ |
1dc32918 | 2448 | e1000_get_speed_and_duplex(hw, |
1da177e4 LT |
2449 | &adapter->link_speed, |
2450 | &adapter->link_duplex); | |
2451 | ||
1dc32918 | 2452 | ctrl = er32(CTRL); |
675ad473 ET |
2453 | pr_info("%s NIC Link is Up %d Mbps %s, " |
2454 | "Flow Control: %s\n", | |
2455 | netdev->name, | |
2456 | adapter->link_speed, | |
2457 | adapter->link_duplex == FULL_DUPLEX ? | |
2458 | "Full Duplex" : "Half Duplex", | |
2459 | ((ctrl & E1000_CTRL_TFCE) && (ctrl & | |
2460 | E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl & | |
2461 | E1000_CTRL_RFCE) ? "RX" : ((ctrl & | |
2462 | E1000_CTRL_TFCE) ? "TX" : "None"))); | |
1da177e4 | 2463 | |
39ca5f03 | 2464 | /* adjust timeout factor according to speed/duplex */ |
66a2b0a3 | 2465 | adapter->tx_timeout_factor = 1; |
7e6c9861 JK |
2466 | switch (adapter->link_speed) { |
2467 | case SPEED_10: | |
c3033b01 | 2468 | txb2b = false; |
be0f0719 | 2469 | adapter->tx_timeout_factor = 16; |
7e6c9861 JK |
2470 | break; |
2471 | case SPEED_100: | |
c3033b01 | 2472 | txb2b = false; |
7e6c9861 JK |
2473 | /* maybe add some timeout factor ? */ |
2474 | break; | |
2475 | } | |
2476 | ||
1532ecea | 2477 | /* enable transmits in the hardware */ |
1dc32918 | 2478 | tctl = er32(TCTL); |
7e6c9861 | 2479 | tctl |= E1000_TCTL_EN; |
1dc32918 | 2480 | ew32(TCTL, tctl); |
66a2b0a3 | 2481 | |
1da177e4 | 2482 | netif_carrier_on(netdev); |
baa34745 | 2483 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
a4010afe JB |
2484 | schedule_delayed_work(&adapter->phy_info_task, |
2485 | 2 * HZ); | |
1da177e4 LT |
2486 | adapter->smartspeed = 0; |
2487 | } | |
2488 | } else { | |
96838a40 | 2489 | if (netif_carrier_ok(netdev)) { |
1da177e4 LT |
2490 | adapter->link_speed = 0; |
2491 | adapter->link_duplex = 0; | |
675ad473 ET |
2492 | pr_info("%s NIC Link is Down\n", |
2493 | netdev->name); | |
1da177e4 | 2494 | netif_carrier_off(netdev); |
baa34745 JB |
2495 | |
2496 | if (!test_bit(__E1000_DOWN, &adapter->flags)) | |
a4010afe JB |
2497 | schedule_delayed_work(&adapter->phy_info_task, |
2498 | 2 * HZ); | |
1da177e4 LT |
2499 | } |
2500 | ||
2501 | e1000_smartspeed(adapter); | |
2502 | } | |
2503 | ||
be0f0719 | 2504 | link_up: |
1da177e4 LT |
2505 | e1000_update_stats(adapter); |
2506 | ||
1dc32918 | 2507 | hw->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
1da177e4 | 2508 | adapter->tpt_old = adapter->stats.tpt; |
1dc32918 | 2509 | hw->collision_delta = adapter->stats.colc - adapter->colc_old; |
1da177e4 LT |
2510 | adapter->colc_old = adapter->stats.colc; |
2511 | ||
2512 | adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; | |
2513 | adapter->gorcl_old = adapter->stats.gorcl; | |
2514 | adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; | |
2515 | adapter->gotcl_old = adapter->stats.gotcl; | |
2516 | ||
1dc32918 | 2517 | e1000_update_adaptive(hw); |
1da177e4 | 2518 | |
f56799ea | 2519 | if (!netif_carrier_ok(netdev)) { |
581d708e | 2520 | if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { |
1da177e4 LT |
2521 | /* We've lost link, so the controller stops DMA, |
2522 | * but we've got queued Tx work that's never going | |
2523 | * to get done, so reset controller to flush Tx. | |
2524 | * (Do the reset outside of interrupt context). */ | |
87041639 JK |
2525 | adapter->tx_timeout_count++; |
2526 | schedule_work(&adapter->reset_task); | |
0ef4eedc JB |
2527 | /* exit immediately since reset is imminent */ |
2528 | goto unlock; | |
1da177e4 LT |
2529 | } |
2530 | } | |
2531 | ||
eab2abf5 JB |
2532 | /* Simple mode for Interrupt Throttle Rate (ITR) */ |
2533 | if (hw->mac_type >= e1000_82540 && adapter->itr_setting == 4) { | |
2534 | /* | |
2535 | * Symmetric Tx/Rx gets a reduced ITR=2000; | |
2536 | * Total asymmetrical Tx or Rx gets ITR=8000; | |
2537 | * everyone else is between 2000-8000. | |
2538 | */ | |
2539 | u32 goc = (adapter->gotcl + adapter->gorcl) / 10000; | |
2540 | u32 dif = (adapter->gotcl > adapter->gorcl ? | |
2541 | adapter->gotcl - adapter->gorcl : | |
2542 | adapter->gorcl - adapter->gotcl) / 10000; | |
2543 | u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; | |
2544 | ||
2545 | ew32(ITR, 1000000000 / (itr * 256)); | |
2546 | } | |
2547 | ||
1da177e4 | 2548 | /* Cause software interrupt to ensure rx ring is cleaned */ |
1dc32918 | 2549 | ew32(ICS, E1000_ICS_RXDMT0); |
1da177e4 | 2550 | |
2648345f | 2551 | /* Force detection of hung controller every watchdog period */ |
c3033b01 | 2552 | adapter->detect_tx_hung = true; |
1da177e4 | 2553 | |
a4010afe | 2554 | /* Reschedule the task */ |
baa34745 | 2555 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
a4010afe | 2556 | schedule_delayed_work(&adapter->watchdog_task, 2 * HZ); |
0ef4eedc JB |
2557 | |
2558 | unlock: | |
2559 | mutex_unlock(&adapter->mutex); | |
1da177e4 LT |
2560 | } |
2561 | ||
835bb129 JB |
2562 | enum latency_range { |
2563 | lowest_latency = 0, | |
2564 | low_latency = 1, | |
2565 | bulk_latency = 2, | |
2566 | latency_invalid = 255 | |
2567 | }; | |
2568 | ||
2569 | /** | |
2570 | * e1000_update_itr - update the dynamic ITR value based on statistics | |
8fce4731 JB |
2571 | * @adapter: pointer to adapter |
2572 | * @itr_setting: current adapter->itr | |
2573 | * @packets: the number of packets during this measurement interval | |
2574 | * @bytes: the number of bytes during this measurement interval | |
2575 | * | |
835bb129 JB |
2576 | * Stores a new ITR value based on packets and byte |
2577 | * counts during the last interrupt. The advantage of per interrupt | |
2578 | * computation is faster updates and more accurate ITR for the current | |
2579 | * traffic pattern. Constants in this function were computed | |
2580 | * based on theoretical maximum wire speed and thresholds were set based | |
2581 | * on testing data as well as attempting to minimize response time | |
2582 | * while increasing bulk throughput. | |
2583 | * this functionality is controlled by the InterruptThrottleRate module | |
2584 | * parameter (see e1000_param.c) | |
835bb129 JB |
2585 | **/ |
2586 | static unsigned int e1000_update_itr(struct e1000_adapter *adapter, | |
64798845 | 2587 | u16 itr_setting, int packets, int bytes) |
835bb129 JB |
2588 | { |
2589 | unsigned int retval = itr_setting; | |
2590 | struct e1000_hw *hw = &adapter->hw; | |
2591 | ||
2592 | if (unlikely(hw->mac_type < e1000_82540)) | |
2593 | goto update_itr_done; | |
2594 | ||
2595 | if (packets == 0) | |
2596 | goto update_itr_done; | |
2597 | ||
835bb129 JB |
2598 | switch (itr_setting) { |
2599 | case lowest_latency: | |
2b65326e JB |
2600 | /* jumbo frames get bulk treatment*/ |
2601 | if (bytes/packets > 8000) | |
2602 | retval = bulk_latency; | |
2603 | else if ((packets < 5) && (bytes > 512)) | |
835bb129 JB |
2604 | retval = low_latency; |
2605 | break; | |
2606 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
2607 | if (bytes > 10000) { | |
2b65326e JB |
2608 | /* jumbo frames need bulk latency setting */ |
2609 | if (bytes/packets > 8000) | |
2610 | retval = bulk_latency; | |
2611 | else if ((packets < 10) || ((bytes/packets) > 1200)) | |
835bb129 JB |
2612 | retval = bulk_latency; |
2613 | else if ((packets > 35)) | |
2614 | retval = lowest_latency; | |
2b65326e JB |
2615 | } else if (bytes/packets > 2000) |
2616 | retval = bulk_latency; | |
2617 | else if (packets <= 2 && bytes < 512) | |
835bb129 JB |
2618 | retval = lowest_latency; |
2619 | break; | |
2620 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
2621 | if (bytes > 25000) { | |
2622 | if (packets > 35) | |
2623 | retval = low_latency; | |
2b65326e JB |
2624 | } else if (bytes < 6000) { |
2625 | retval = low_latency; | |
835bb129 JB |
2626 | } |
2627 | break; | |
2628 | } | |
2629 | ||
2630 | update_itr_done: | |
2631 | return retval; | |
2632 | } | |
2633 | ||
2634 | static void e1000_set_itr(struct e1000_adapter *adapter) | |
2635 | { | |
2636 | struct e1000_hw *hw = &adapter->hw; | |
406874a7 JP |
2637 | u16 current_itr; |
2638 | u32 new_itr = adapter->itr; | |
835bb129 JB |
2639 | |
2640 | if (unlikely(hw->mac_type < e1000_82540)) | |
2641 | return; | |
2642 | ||
2643 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ | |
2644 | if (unlikely(adapter->link_speed != SPEED_1000)) { | |
2645 | current_itr = 0; | |
2646 | new_itr = 4000; | |
2647 | goto set_itr_now; | |
2648 | } | |
2649 | ||
2650 | adapter->tx_itr = e1000_update_itr(adapter, | |
2651 | adapter->tx_itr, | |
2652 | adapter->total_tx_packets, | |
2653 | adapter->total_tx_bytes); | |
2b65326e JB |
2654 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
2655 | if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) | |
2656 | adapter->tx_itr = low_latency; | |
2657 | ||
835bb129 JB |
2658 | adapter->rx_itr = e1000_update_itr(adapter, |
2659 | adapter->rx_itr, | |
2660 | adapter->total_rx_packets, | |
2661 | adapter->total_rx_bytes); | |
2b65326e JB |
2662 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
2663 | if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) | |
2664 | adapter->rx_itr = low_latency; | |
835bb129 JB |
2665 | |
2666 | current_itr = max(adapter->rx_itr, adapter->tx_itr); | |
2667 | ||
835bb129 JB |
2668 | switch (current_itr) { |
2669 | /* counts and packets in update_itr are dependent on these numbers */ | |
2670 | case lowest_latency: | |
2671 | new_itr = 70000; | |
2672 | break; | |
2673 | case low_latency: | |
2674 | new_itr = 20000; /* aka hwitr = ~200 */ | |
2675 | break; | |
2676 | case bulk_latency: | |
2677 | new_itr = 4000; | |
2678 | break; | |
2679 | default: | |
2680 | break; | |
2681 | } | |
2682 | ||
2683 | set_itr_now: | |
2684 | if (new_itr != adapter->itr) { | |
2685 | /* this attempts to bias the interrupt rate towards Bulk | |
2686 | * by adding intermediate steps when interrupt rate is | |
2687 | * increasing */ | |
2688 | new_itr = new_itr > adapter->itr ? | |
2689 | min(adapter->itr + (new_itr >> 2), new_itr) : | |
2690 | new_itr; | |
2691 | adapter->itr = new_itr; | |
1dc32918 | 2692 | ew32(ITR, 1000000000 / (new_itr * 256)); |
835bb129 | 2693 | } |
835bb129 JB |
2694 | } |
2695 | ||
1da177e4 LT |
2696 | #define E1000_TX_FLAGS_CSUM 0x00000001 |
2697 | #define E1000_TX_FLAGS_VLAN 0x00000002 | |
2698 | #define E1000_TX_FLAGS_TSO 0x00000004 | |
2d7edb92 | 2699 | #define E1000_TX_FLAGS_IPV4 0x00000008 |
1da177e4 LT |
2700 | #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
2701 | #define E1000_TX_FLAGS_VLAN_SHIFT 16 | |
2702 | ||
64798845 JP |
2703 | static int e1000_tso(struct e1000_adapter *adapter, |
2704 | struct e1000_tx_ring *tx_ring, struct sk_buff *skb) | |
1da177e4 | 2705 | { |
1da177e4 | 2706 | struct e1000_context_desc *context_desc; |
545c67c0 | 2707 | struct e1000_buffer *buffer_info; |
1da177e4 | 2708 | unsigned int i; |
406874a7 JP |
2709 | u32 cmd_length = 0; |
2710 | u16 ipcse = 0, tucse, mss; | |
2711 | u8 ipcss, ipcso, tucss, tucso, hdr_len; | |
1da177e4 LT |
2712 | int err; |
2713 | ||
89114afd | 2714 | if (skb_is_gso(skb)) { |
1da177e4 LT |
2715 | if (skb_header_cloned(skb)) { |
2716 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
2717 | if (err) | |
2718 | return err; | |
2719 | } | |
2720 | ||
ab6a5bb6 | 2721 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
7967168c | 2722 | mss = skb_shinfo(skb)->gso_size; |
60828236 | 2723 | if (skb->protocol == htons(ETH_P_IP)) { |
eddc9ec5 ACM |
2724 | struct iphdr *iph = ip_hdr(skb); |
2725 | iph->tot_len = 0; | |
2726 | iph->check = 0; | |
aa8223c7 ACM |
2727 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
2728 | iph->daddr, 0, | |
2729 | IPPROTO_TCP, | |
2730 | 0); | |
2d7edb92 | 2731 | cmd_length = E1000_TXD_CMD_IP; |
ea2ae17d | 2732 | ipcse = skb_transport_offset(skb) - 1; |
e15fdd03 | 2733 | } else if (skb->protocol == htons(ETH_P_IPV6)) { |
0660e03f | 2734 | ipv6_hdr(skb)->payload_len = 0; |
aa8223c7 | 2735 | tcp_hdr(skb)->check = |
0660e03f ACM |
2736 | ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
2737 | &ipv6_hdr(skb)->daddr, | |
2738 | 0, IPPROTO_TCP, 0); | |
2d7edb92 | 2739 | ipcse = 0; |
2d7edb92 | 2740 | } |
bbe735e4 | 2741 | ipcss = skb_network_offset(skb); |
eddc9ec5 | 2742 | ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; |
ea2ae17d | 2743 | tucss = skb_transport_offset(skb); |
aa8223c7 | 2744 | tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
1da177e4 LT |
2745 | tucse = 0; |
2746 | ||
2747 | cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | | |
2d7edb92 | 2748 | E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
1da177e4 | 2749 | |
581d708e MC |
2750 | i = tx_ring->next_to_use; |
2751 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
545c67c0 | 2752 | buffer_info = &tx_ring->buffer_info[i]; |
1da177e4 LT |
2753 | |
2754 | context_desc->lower_setup.ip_fields.ipcss = ipcss; | |
2755 | context_desc->lower_setup.ip_fields.ipcso = ipcso; | |
2756 | context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); | |
2757 | context_desc->upper_setup.tcp_fields.tucss = tucss; | |
2758 | context_desc->upper_setup.tcp_fields.tucso = tucso; | |
2759 | context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); | |
2760 | context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); | |
2761 | context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; | |
2762 | context_desc->cmd_and_length = cpu_to_le32(cmd_length); | |
2763 | ||
545c67c0 | 2764 | buffer_info->time_stamp = jiffies; |
a9ebadd6 | 2765 | buffer_info->next_to_watch = i; |
545c67c0 | 2766 | |
581d708e MC |
2767 | if (++i == tx_ring->count) i = 0; |
2768 | tx_ring->next_to_use = i; | |
1da177e4 | 2769 | |
c3033b01 | 2770 | return true; |
1da177e4 | 2771 | } |
c3033b01 | 2772 | return false; |
1da177e4 LT |
2773 | } |
2774 | ||
64798845 JP |
2775 | static bool e1000_tx_csum(struct e1000_adapter *adapter, |
2776 | struct e1000_tx_ring *tx_ring, struct sk_buff *skb) | |
1da177e4 LT |
2777 | { |
2778 | struct e1000_context_desc *context_desc; | |
545c67c0 | 2779 | struct e1000_buffer *buffer_info; |
1da177e4 | 2780 | unsigned int i; |
406874a7 | 2781 | u8 css; |
3ed30676 | 2782 | u32 cmd_len = E1000_TXD_CMD_DEXT; |
1da177e4 | 2783 | |
3ed30676 DG |
2784 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
2785 | return false; | |
1da177e4 | 2786 | |
3ed30676 | 2787 | switch (skb->protocol) { |
09640e63 | 2788 | case cpu_to_be16(ETH_P_IP): |
3ed30676 DG |
2789 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
2790 | cmd_len |= E1000_TXD_CMD_TCP; | |
2791 | break; | |
09640e63 | 2792 | case cpu_to_be16(ETH_P_IPV6): |
3ed30676 DG |
2793 | /* XXX not handling all IPV6 headers */ |
2794 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
2795 | cmd_len |= E1000_TXD_CMD_TCP; | |
2796 | break; | |
2797 | default: | |
2798 | if (unlikely(net_ratelimit())) | |
feb8f478 ET |
2799 | e_warn(drv, "checksum_partial proto=%x!\n", |
2800 | skb->protocol); | |
3ed30676 DG |
2801 | break; |
2802 | } | |
1da177e4 | 2803 | |
0d0b1672 | 2804 | css = skb_checksum_start_offset(skb); |
1da177e4 | 2805 | |
3ed30676 DG |
2806 | i = tx_ring->next_to_use; |
2807 | buffer_info = &tx_ring->buffer_info[i]; | |
2808 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
545c67c0 | 2809 | |
3ed30676 DG |
2810 | context_desc->lower_setup.ip_config = 0; |
2811 | context_desc->upper_setup.tcp_fields.tucss = css; | |
2812 | context_desc->upper_setup.tcp_fields.tucso = | |
2813 | css + skb->csum_offset; | |
2814 | context_desc->upper_setup.tcp_fields.tucse = 0; | |
2815 | context_desc->tcp_seg_setup.data = 0; | |
2816 | context_desc->cmd_and_length = cpu_to_le32(cmd_len); | |
1da177e4 | 2817 | |
3ed30676 DG |
2818 | buffer_info->time_stamp = jiffies; |
2819 | buffer_info->next_to_watch = i; | |
1da177e4 | 2820 | |
3ed30676 DG |
2821 | if (unlikely(++i == tx_ring->count)) i = 0; |
2822 | tx_ring->next_to_use = i; | |
2823 | ||
2824 | return true; | |
1da177e4 LT |
2825 | } |
2826 | ||
2827 | #define E1000_MAX_TXD_PWR 12 | |
2828 | #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) | |
2829 | ||
64798845 JP |
2830 | static int e1000_tx_map(struct e1000_adapter *adapter, |
2831 | struct e1000_tx_ring *tx_ring, | |
2832 | struct sk_buff *skb, unsigned int first, | |
2833 | unsigned int max_per_txd, unsigned int nr_frags, | |
2834 | unsigned int mss) | |
1da177e4 | 2835 | { |
1dc32918 | 2836 | struct e1000_hw *hw = &adapter->hw; |
602c0554 | 2837 | struct pci_dev *pdev = adapter->pdev; |
37e73df8 | 2838 | struct e1000_buffer *buffer_info; |
d20b606c | 2839 | unsigned int len = skb_headlen(skb); |
602c0554 | 2840 | unsigned int offset = 0, size, count = 0, i; |
31c15a2f | 2841 | unsigned int f, bytecount, segs; |
1da177e4 LT |
2842 | |
2843 | i = tx_ring->next_to_use; | |
2844 | ||
96838a40 | 2845 | while (len) { |
37e73df8 | 2846 | buffer_info = &tx_ring->buffer_info[i]; |
1da177e4 | 2847 | size = min(len, max_per_txd); |
fd803241 JK |
2848 | /* Workaround for Controller erratum -- |
2849 | * descriptor for non-tso packet in a linear SKB that follows a | |
2850 | * tso gets written back prematurely before the data is fully | |
0f15a8fa | 2851 | * DMA'd to the controller */ |
fd803241 | 2852 | if (!skb->data_len && tx_ring->last_tx_tso && |
89114afd | 2853 | !skb_is_gso(skb)) { |
fd803241 JK |
2854 | tx_ring->last_tx_tso = 0; |
2855 | size -= 4; | |
2856 | } | |
2857 | ||
1da177e4 LT |
2858 | /* Workaround for premature desc write-backs |
2859 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 2860 | if (unlikely(mss && !nr_frags && size == len && size > 8)) |
1da177e4 | 2861 | size -= 4; |
97338bde MC |
2862 | /* work-around for errata 10 and it applies |
2863 | * to all controllers in PCI-X mode | |
2864 | * The fix is to make sure that the first descriptor of a | |
2865 | * packet is smaller than 2048 - 16 - 16 (or 2016) bytes | |
2866 | */ | |
1dc32918 | 2867 | if (unlikely((hw->bus_type == e1000_bus_type_pcix) && |
97338bde MC |
2868 | (size > 2015) && count == 0)) |
2869 | size = 2015; | |
96838a40 | 2870 | |
1da177e4 LT |
2871 | /* Workaround for potential 82544 hang in PCI-X. Avoid |
2872 | * terminating buffers within evenly-aligned dwords. */ | |
96838a40 | 2873 | if (unlikely(adapter->pcix_82544 && |
1da177e4 LT |
2874 | !((unsigned long)(skb->data + offset + size - 1) & 4) && |
2875 | size > 4)) | |
2876 | size -= 4; | |
2877 | ||
2878 | buffer_info->length = size; | |
cdd7549e | 2879 | /* set time_stamp *before* dma to help avoid a possible race */ |
1da177e4 | 2880 | buffer_info->time_stamp = jiffies; |
602c0554 | 2881 | buffer_info->mapped_as_page = false; |
b16f53be NN |
2882 | buffer_info->dma = dma_map_single(&pdev->dev, |
2883 | skb->data + offset, | |
2884 | size, DMA_TO_DEVICE); | |
2885 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) | |
602c0554 | 2886 | goto dma_error; |
a9ebadd6 | 2887 | buffer_info->next_to_watch = i; |
1da177e4 LT |
2888 | |
2889 | len -= size; | |
2890 | offset += size; | |
2891 | count++; | |
37e73df8 AD |
2892 | if (len) { |
2893 | i++; | |
2894 | if (unlikely(i == tx_ring->count)) | |
2895 | i = 0; | |
2896 | } | |
1da177e4 LT |
2897 | } |
2898 | ||
96838a40 | 2899 | for (f = 0; f < nr_frags; f++) { |
9e903e08 | 2900 | const struct skb_frag_struct *frag; |
1da177e4 LT |
2901 | |
2902 | frag = &skb_shinfo(skb)->frags[f]; | |
9e903e08 | 2903 | len = skb_frag_size(frag); |
877749bf | 2904 | offset = 0; |
1da177e4 | 2905 | |
96838a40 | 2906 | while (len) { |
877749bf | 2907 | unsigned long bufend; |
37e73df8 AD |
2908 | i++; |
2909 | if (unlikely(i == tx_ring->count)) | |
2910 | i = 0; | |
2911 | ||
1da177e4 LT |
2912 | buffer_info = &tx_ring->buffer_info[i]; |
2913 | size = min(len, max_per_txd); | |
1da177e4 LT |
2914 | /* Workaround for premature desc write-backs |
2915 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 2916 | if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) |
1da177e4 | 2917 | size -= 4; |
1da177e4 LT |
2918 | /* Workaround for potential 82544 hang in PCI-X. |
2919 | * Avoid terminating buffers within evenly-aligned | |
2920 | * dwords. */ | |
877749bf IC |
2921 | bufend = (unsigned long) |
2922 | page_to_phys(skb_frag_page(frag)); | |
2923 | bufend += offset + size - 1; | |
96838a40 | 2924 | if (unlikely(adapter->pcix_82544 && |
877749bf IC |
2925 | !(bufend & 4) && |
2926 | size > 4)) | |
1da177e4 LT |
2927 | size -= 4; |
2928 | ||
2929 | buffer_info->length = size; | |
1da177e4 | 2930 | buffer_info->time_stamp = jiffies; |
602c0554 | 2931 | buffer_info->mapped_as_page = true; |
877749bf IC |
2932 | buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag, |
2933 | offset, size, DMA_TO_DEVICE); | |
b16f53be | 2934 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
602c0554 | 2935 | goto dma_error; |
a9ebadd6 | 2936 | buffer_info->next_to_watch = i; |
1da177e4 LT |
2937 | |
2938 | len -= size; | |
2939 | offset += size; | |
2940 | count++; | |
1da177e4 LT |
2941 | } |
2942 | } | |
2943 | ||
31c15a2f DN |
2944 | segs = skb_shinfo(skb)->gso_segs ?: 1; |
2945 | /* multiply data chunks by size of headers */ | |
2946 | bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len; | |
2947 | ||
1da177e4 | 2948 | tx_ring->buffer_info[i].skb = skb; |
31c15a2f DN |
2949 | tx_ring->buffer_info[i].segs = segs; |
2950 | tx_ring->buffer_info[i].bytecount = bytecount; | |
1da177e4 LT |
2951 | tx_ring->buffer_info[first].next_to_watch = i; |
2952 | ||
2953 | return count; | |
602c0554 AD |
2954 | |
2955 | dma_error: | |
2956 | dev_err(&pdev->dev, "TX DMA map failed\n"); | |
2957 | buffer_info->dma = 0; | |
c1fa347f | 2958 | if (count) |
602c0554 | 2959 | count--; |
c1fa347f RK |
2960 | |
2961 | while (count--) { | |
2962 | if (i==0) | |
602c0554 | 2963 | i += tx_ring->count; |
c1fa347f | 2964 | i--; |
602c0554 AD |
2965 | buffer_info = &tx_ring->buffer_info[i]; |
2966 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); | |
2967 | } | |
2968 | ||
2969 | return 0; | |
1da177e4 LT |
2970 | } |
2971 | ||
64798845 JP |
2972 | static void e1000_tx_queue(struct e1000_adapter *adapter, |
2973 | struct e1000_tx_ring *tx_ring, int tx_flags, | |
2974 | int count) | |
1da177e4 | 2975 | { |
1dc32918 | 2976 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
2977 | struct e1000_tx_desc *tx_desc = NULL; |
2978 | struct e1000_buffer *buffer_info; | |
406874a7 | 2979 | u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; |
1da177e4 LT |
2980 | unsigned int i; |
2981 | ||
96838a40 | 2982 | if (likely(tx_flags & E1000_TX_FLAGS_TSO)) { |
1da177e4 LT |
2983 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
2984 | E1000_TXD_CMD_TSE; | |
2d7edb92 MC |
2985 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
2986 | ||
96838a40 | 2987 | if (likely(tx_flags & E1000_TX_FLAGS_IPV4)) |
2d7edb92 | 2988 | txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
1da177e4 LT |
2989 | } |
2990 | ||
96838a40 | 2991 | if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) { |
1da177e4 LT |
2992 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
2993 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
2994 | } | |
2995 | ||
96838a40 | 2996 | if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { |
1da177e4 LT |
2997 | txd_lower |= E1000_TXD_CMD_VLE; |
2998 | txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); | |
2999 | } | |
3000 | ||
3001 | i = tx_ring->next_to_use; | |
3002 | ||
96838a40 | 3003 | while (count--) { |
1da177e4 LT |
3004 | buffer_info = &tx_ring->buffer_info[i]; |
3005 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
3006 | tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
3007 | tx_desc->lower.data = | |
3008 | cpu_to_le32(txd_lower | buffer_info->length); | |
3009 | tx_desc->upper.data = cpu_to_le32(txd_upper); | |
96838a40 | 3010 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
3011 | } |
3012 | ||
3013 | tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); | |
3014 | ||
3015 | /* Force memory writes to complete before letting h/w | |
3016 | * know there are new descriptors to fetch. (Only | |
3017 | * applicable for weak-ordered memory model archs, | |
3018 | * such as IA-64). */ | |
3019 | wmb(); | |
3020 | ||
3021 | tx_ring->next_to_use = i; | |
1dc32918 | 3022 | writel(i, hw->hw_addr + tx_ring->tdt); |
2ce9047f JB |
3023 | /* we need this if more than one processor can write to our tail |
3024 | * at a time, it syncronizes IO on IA64/Altix systems */ | |
3025 | mmiowb(); | |
1da177e4 LT |
3026 | } |
3027 | ||
3028 | /** | |
3029 | * 82547 workaround to avoid controller hang in half-duplex environment. | |
3030 | * The workaround is to avoid queuing a large packet that would span | |
3031 | * the internal Tx FIFO ring boundary by notifying the stack to resend | |
3032 | * the packet at a later time. This gives the Tx FIFO an opportunity to | |
3033 | * flush all packets. When that occurs, we reset the Tx FIFO pointers | |
3034 | * to the beginning of the Tx FIFO. | |
3035 | **/ | |
3036 | ||
3037 | #define E1000_FIFO_HDR 0x10 | |
3038 | #define E1000_82547_PAD_LEN 0x3E0 | |
3039 | ||
64798845 JP |
3040 | static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
3041 | struct sk_buff *skb) | |
1da177e4 | 3042 | { |
406874a7 JP |
3043 | u32 fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; |
3044 | u32 skb_fifo_len = skb->len + E1000_FIFO_HDR; | |
1da177e4 | 3045 | |
9099cfb9 | 3046 | skb_fifo_len = ALIGN(skb_fifo_len, E1000_FIFO_HDR); |
1da177e4 | 3047 | |
96838a40 | 3048 | if (adapter->link_duplex != HALF_DUPLEX) |
1da177e4 LT |
3049 | goto no_fifo_stall_required; |
3050 | ||
96838a40 | 3051 | if (atomic_read(&adapter->tx_fifo_stall)) |
1da177e4 LT |
3052 | return 1; |
3053 | ||
96838a40 | 3054 | if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { |
1da177e4 LT |
3055 | atomic_set(&adapter->tx_fifo_stall, 1); |
3056 | return 1; | |
3057 | } | |
3058 | ||
3059 | no_fifo_stall_required: | |
3060 | adapter->tx_fifo_head += skb_fifo_len; | |
96838a40 | 3061 | if (adapter->tx_fifo_head >= adapter->tx_fifo_size) |
1da177e4 LT |
3062 | adapter->tx_fifo_head -= adapter->tx_fifo_size; |
3063 | return 0; | |
3064 | } | |
3065 | ||
65c7973f JB |
3066 | static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) |
3067 | { | |
3068 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3069 | struct e1000_tx_ring *tx_ring = adapter->tx_ring; | |
3070 | ||
3071 | netif_stop_queue(netdev); | |
3072 | /* Herbert's original patch had: | |
3073 | * smp_mb__after_netif_stop_queue(); | |
3074 | * but since that doesn't exist yet, just open code it. */ | |
3075 | smp_mb(); | |
3076 | ||
3077 | /* We need to check again in a case another CPU has just | |
3078 | * made room available. */ | |
3079 | if (likely(E1000_DESC_UNUSED(tx_ring) < size)) | |
3080 | return -EBUSY; | |
3081 | ||
3082 | /* A reprieve! */ | |
3083 | netif_start_queue(netdev); | |
fcfb1224 | 3084 | ++adapter->restart_queue; |
65c7973f JB |
3085 | return 0; |
3086 | } | |
3087 | ||
3088 | static int e1000_maybe_stop_tx(struct net_device *netdev, | |
3089 | struct e1000_tx_ring *tx_ring, int size) | |
3090 | { | |
3091 | if (likely(E1000_DESC_UNUSED(tx_ring) >= size)) | |
3092 | return 0; | |
3093 | return __e1000_maybe_stop_tx(netdev, size); | |
3094 | } | |
3095 | ||
1da177e4 | 3096 | #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
3b29a56d SH |
3097 | static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
3098 | struct net_device *netdev) | |
1da177e4 | 3099 | { |
60490fe0 | 3100 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 3101 | struct e1000_hw *hw = &adapter->hw; |
581d708e | 3102 | struct e1000_tx_ring *tx_ring; |
1da177e4 LT |
3103 | unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; |
3104 | unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; | |
3105 | unsigned int tx_flags = 0; | |
e743d313 | 3106 | unsigned int len = skb_headlen(skb); |
6d1e3aa7 KK |
3107 | unsigned int nr_frags; |
3108 | unsigned int mss; | |
1da177e4 | 3109 | int count = 0; |
76c224bc | 3110 | int tso; |
1da177e4 | 3111 | unsigned int f; |
1da177e4 | 3112 | |
65c7973f JB |
3113 | /* This goes back to the question of how to logically map a tx queue |
3114 | * to a flow. Right now, performance is impacted slightly negatively | |
3115 | * if using multiple tx queues. If the stack breaks away from a | |
3116 | * single qdisc implementation, we can look at this again. */ | |
581d708e | 3117 | tx_ring = adapter->tx_ring; |
24025e4e | 3118 | |
581d708e | 3119 | if (unlikely(skb->len <= 0)) { |
1da177e4 LT |
3120 | dev_kfree_skb_any(skb); |
3121 | return NETDEV_TX_OK; | |
3122 | } | |
3123 | ||
7967168c | 3124 | mss = skb_shinfo(skb)->gso_size; |
76c224bc | 3125 | /* The controller does a simple calculation to |
1da177e4 LT |
3126 | * make sure there is enough room in the FIFO before |
3127 | * initiating the DMA for each buffer. The calc is: | |
3128 | * 4 = ceil(buffer len/mss). To make sure we don't | |
3129 | * overrun the FIFO, adjust the max buffer len if mss | |
3130 | * drops. */ | |
96838a40 | 3131 | if (mss) { |
406874a7 | 3132 | u8 hdr_len; |
1da177e4 LT |
3133 | max_per_txd = min(mss << 2, max_per_txd); |
3134 | max_txd_pwr = fls(max_per_txd) - 1; | |
9a3056da | 3135 | |
ab6a5bb6 | 3136 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
6d1e3aa7 | 3137 | if (skb->data_len && hdr_len == len) { |
1dc32918 | 3138 | switch (hw->mac_type) { |
9f687888 | 3139 | unsigned int pull_size; |
683a2aa3 HX |
3140 | case e1000_82544: |
3141 | /* Make sure we have room to chop off 4 bytes, | |
3142 | * and that the end alignment will work out to | |
3143 | * this hardware's requirements | |
3144 | * NOTE: this is a TSO only workaround | |
3145 | * if end byte alignment not correct move us | |
3146 | * into the next dword */ | |
27a884dc | 3147 | if ((unsigned long)(skb_tail_pointer(skb) - 1) & 4) |
683a2aa3 HX |
3148 | break; |
3149 | /* fall through */ | |
9f687888 JK |
3150 | pull_size = min((unsigned int)4, skb->data_len); |
3151 | if (!__pskb_pull_tail(skb, pull_size)) { | |
feb8f478 ET |
3152 | e_err(drv, "__pskb_pull_tail " |
3153 | "failed.\n"); | |
9f687888 | 3154 | dev_kfree_skb_any(skb); |
749dfc70 | 3155 | return NETDEV_TX_OK; |
9f687888 | 3156 | } |
e743d313 | 3157 | len = skb_headlen(skb); |
9f687888 JK |
3158 | break; |
3159 | default: | |
3160 | /* do nothing */ | |
3161 | break; | |
d74bbd3b | 3162 | } |
9a3056da | 3163 | } |
1da177e4 LT |
3164 | } |
3165 | ||
9a3056da | 3166 | /* reserve a descriptor for the offload context */ |
84fa7933 | 3167 | if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
1da177e4 | 3168 | count++; |
2648345f | 3169 | count++; |
fd803241 | 3170 | |
fd803241 | 3171 | /* Controller Erratum workaround */ |
89114afd | 3172 | if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb)) |
fd803241 | 3173 | count++; |
fd803241 | 3174 | |
1da177e4 LT |
3175 | count += TXD_USE_COUNT(len, max_txd_pwr); |
3176 | ||
96838a40 | 3177 | if (adapter->pcix_82544) |
1da177e4 LT |
3178 | count++; |
3179 | ||
96838a40 | 3180 | /* work-around for errata 10 and it applies to all controllers |
97338bde MC |
3181 | * in PCI-X mode, so add one more descriptor to the count |
3182 | */ | |
1dc32918 | 3183 | if (unlikely((hw->bus_type == e1000_bus_type_pcix) && |
97338bde MC |
3184 | (len > 2015))) |
3185 | count++; | |
3186 | ||
1da177e4 | 3187 | nr_frags = skb_shinfo(skb)->nr_frags; |
96838a40 | 3188 | for (f = 0; f < nr_frags; f++) |
9e903e08 | 3189 | count += TXD_USE_COUNT(skb_frag_size(&skb_shinfo(skb)->frags[f]), |
1da177e4 | 3190 | max_txd_pwr); |
96838a40 | 3191 | if (adapter->pcix_82544) |
1da177e4 LT |
3192 | count += nr_frags; |
3193 | ||
1da177e4 LT |
3194 | /* need: count + 2 desc gap to keep tail from touching |
3195 | * head, otherwise try next time */ | |
8017943e | 3196 | if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2))) |
1da177e4 | 3197 | return NETDEV_TX_BUSY; |
1da177e4 | 3198 | |
a4010afe JB |
3199 | if (unlikely((hw->mac_type == e1000_82547) && |
3200 | (e1000_82547_fifo_workaround(adapter, skb)))) { | |
3201 | netif_stop_queue(netdev); | |
3202 | if (!test_bit(__E1000_DOWN, &adapter->flags)) | |
3203 | schedule_delayed_work(&adapter->fifo_stall_task, 1); | |
3204 | return NETDEV_TX_BUSY; | |
1da177e4 LT |
3205 | } |
3206 | ||
5622e404 | 3207 | if (vlan_tx_tag_present(skb)) { |
1da177e4 LT |
3208 | tx_flags |= E1000_TX_FLAGS_VLAN; |
3209 | tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); | |
3210 | } | |
3211 | ||
581d708e | 3212 | first = tx_ring->next_to_use; |
96838a40 | 3213 | |
581d708e | 3214 | tso = e1000_tso(adapter, tx_ring, skb); |
1da177e4 LT |
3215 | if (tso < 0) { |
3216 | dev_kfree_skb_any(skb); | |
3217 | return NETDEV_TX_OK; | |
3218 | } | |
3219 | ||
fd803241 | 3220 | if (likely(tso)) { |
8fce4731 JB |
3221 | if (likely(hw->mac_type != e1000_82544)) |
3222 | tx_ring->last_tx_tso = 1; | |
1da177e4 | 3223 | tx_flags |= E1000_TX_FLAGS_TSO; |
fd803241 | 3224 | } else if (likely(e1000_tx_csum(adapter, tx_ring, skb))) |
1da177e4 LT |
3225 | tx_flags |= E1000_TX_FLAGS_CSUM; |
3226 | ||
60828236 | 3227 | if (likely(skb->protocol == htons(ETH_P_IP))) |
2d7edb92 MC |
3228 | tx_flags |= E1000_TX_FLAGS_IPV4; |
3229 | ||
37e73df8 AD |
3230 | count = e1000_tx_map(adapter, tx_ring, skb, first, max_per_txd, |
3231 | nr_frags, mss); | |
1da177e4 | 3232 | |
37e73df8 AD |
3233 | if (count) { |
3234 | e1000_tx_queue(adapter, tx_ring, tx_flags, count); | |
37e73df8 AD |
3235 | /* Make sure there is space in the ring for the next send. */ |
3236 | e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2); | |
1da177e4 | 3237 | |
37e73df8 AD |
3238 | } else { |
3239 | dev_kfree_skb_any(skb); | |
3240 | tx_ring->buffer_info[first].time_stamp = 0; | |
3241 | tx_ring->next_to_use = first; | |
3242 | } | |
1da177e4 | 3243 | |
1da177e4 LT |
3244 | return NETDEV_TX_OK; |
3245 | } | |
3246 | ||
3247 | /** | |
3248 | * e1000_tx_timeout - Respond to a Tx Hang | |
3249 | * @netdev: network interface device structure | |
3250 | **/ | |
3251 | ||
64798845 | 3252 | static void e1000_tx_timeout(struct net_device *netdev) |
1da177e4 | 3253 | { |
60490fe0 | 3254 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
3255 | |
3256 | /* Do the reset outside of interrupt context */ | |
87041639 JK |
3257 | adapter->tx_timeout_count++; |
3258 | schedule_work(&adapter->reset_task); | |
1da177e4 LT |
3259 | } |
3260 | ||
64798845 | 3261 | static void e1000_reset_task(struct work_struct *work) |
1da177e4 | 3262 | { |
65f27f38 DH |
3263 | struct e1000_adapter *adapter = |
3264 | container_of(work, struct e1000_adapter, reset_task); | |
1da177e4 | 3265 | |
0ef4eedc JB |
3266 | if (test_bit(__E1000_DOWN, &adapter->flags)) |
3267 | return; | |
338c15e4 | 3268 | e1000_reinit_safe(adapter); |
1da177e4 LT |
3269 | } |
3270 | ||
3271 | /** | |
3272 | * e1000_get_stats - Get System Network Statistics | |
3273 | * @netdev: network interface device structure | |
3274 | * | |
3275 | * Returns the address of the device statistics structure. | |
a4010afe | 3276 | * The statistics are actually updated from the watchdog. |
1da177e4 LT |
3277 | **/ |
3278 | ||
64798845 | 3279 | static struct net_device_stats *e1000_get_stats(struct net_device *netdev) |
1da177e4 | 3280 | { |
6b7660cd | 3281 | /* only return the current stats */ |
5fe31def | 3282 | return &netdev->stats; |
1da177e4 LT |
3283 | } |
3284 | ||
3285 | /** | |
3286 | * e1000_change_mtu - Change the Maximum Transfer Unit | |
3287 | * @netdev: network interface device structure | |
3288 | * @new_mtu: new value for maximum frame size | |
3289 | * | |
3290 | * Returns 0 on success, negative on failure | |
3291 | **/ | |
3292 | ||
64798845 | 3293 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu) |
1da177e4 | 3294 | { |
60490fe0 | 3295 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 3296 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
3297 | int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
3298 | ||
96838a40 JB |
3299 | if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || |
3300 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
feb8f478 | 3301 | e_err(probe, "Invalid MTU setting\n"); |
1da177e4 | 3302 | return -EINVAL; |
2d7edb92 | 3303 | } |
1da177e4 | 3304 | |
997f5cbd | 3305 | /* Adapter-specific max frame size limits. */ |
1dc32918 | 3306 | switch (hw->mac_type) { |
9e2feace | 3307 | case e1000_undefined ... e1000_82542_rev2_1: |
b7cb8c2c | 3308 | if (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)) { |
feb8f478 | 3309 | e_err(probe, "Jumbo Frames not supported.\n"); |
2d7edb92 | 3310 | return -EINVAL; |
2d7edb92 | 3311 | } |
997f5cbd | 3312 | break; |
997f5cbd JK |
3313 | default: |
3314 | /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */ | |
3315 | break; | |
1da177e4 LT |
3316 | } |
3317 | ||
3d6114e7 JB |
3318 | while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) |
3319 | msleep(1); | |
3320 | /* e1000_down has a dependency on max_frame_size */ | |
3321 | hw->max_frame_size = max_frame; | |
3322 | if (netif_running(netdev)) | |
3323 | e1000_down(adapter); | |
3324 | ||
87f5032e | 3325 | /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
9e2feace | 3326 | * means we reserve 2 more, this pushes us to allocate from the next |
edbbb3ca JB |
3327 | * larger slab size. |
3328 | * i.e. RXBUFFER_2048 --> size-4096 slab | |
3329 | * however with the new *_jumbo_rx* routines, jumbo receives will use | |
3330 | * fragmented skbs */ | |
9e2feace | 3331 | |
9926146b | 3332 | if (max_frame <= E1000_RXBUFFER_2048) |
9e2feace | 3333 | adapter->rx_buffer_len = E1000_RXBUFFER_2048; |
edbbb3ca JB |
3334 | else |
3335 | #if (PAGE_SIZE >= E1000_RXBUFFER_16384) | |
9e2feace | 3336 | adapter->rx_buffer_len = E1000_RXBUFFER_16384; |
edbbb3ca JB |
3337 | #elif (PAGE_SIZE >= E1000_RXBUFFER_4096) |
3338 | adapter->rx_buffer_len = PAGE_SIZE; | |
3339 | #endif | |
9e2feace AK |
3340 | |
3341 | /* adjust allocation if LPE protects us, and we aren't using SBP */ | |
1dc32918 | 3342 | if (!hw->tbi_compatibility_on && |
b7cb8c2c | 3343 | ((max_frame == (ETH_FRAME_LEN + ETH_FCS_LEN)) || |
9e2feace AK |
3344 | (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE))) |
3345 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; | |
997f5cbd | 3346 | |
675ad473 ET |
3347 | pr_info("%s changing MTU from %d to %d\n", |
3348 | netdev->name, netdev->mtu, new_mtu); | |
2d7edb92 MC |
3349 | netdev->mtu = new_mtu; |
3350 | ||
2db10a08 | 3351 | if (netif_running(netdev)) |
3d6114e7 JB |
3352 | e1000_up(adapter); |
3353 | else | |
3354 | e1000_reset(adapter); | |
3355 | ||
3356 | clear_bit(__E1000_RESETTING, &adapter->flags); | |
1da177e4 | 3357 | |
1da177e4 LT |
3358 | return 0; |
3359 | } | |
3360 | ||
3361 | /** | |
3362 | * e1000_update_stats - Update the board statistics counters | |
3363 | * @adapter: board private structure | |
3364 | **/ | |
3365 | ||
64798845 | 3366 | void e1000_update_stats(struct e1000_adapter *adapter) |
1da177e4 | 3367 | { |
5fe31def | 3368 | struct net_device *netdev = adapter->netdev; |
1da177e4 | 3369 | struct e1000_hw *hw = &adapter->hw; |
282f33c9 | 3370 | struct pci_dev *pdev = adapter->pdev; |
1da177e4 | 3371 | unsigned long flags; |
406874a7 | 3372 | u16 phy_tmp; |
1da177e4 LT |
3373 | |
3374 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF | |
3375 | ||
282f33c9 LV |
3376 | /* |
3377 | * Prevent stats update while adapter is being reset, or if the pci | |
3378 | * connection is down. | |
3379 | */ | |
9026729b | 3380 | if (adapter->link_speed == 0) |
282f33c9 | 3381 | return; |
81b1955e | 3382 | if (pci_channel_offline(pdev)) |
9026729b AK |
3383 | return; |
3384 | ||
1da177e4 LT |
3385 | spin_lock_irqsave(&adapter->stats_lock, flags); |
3386 | ||
828d055f | 3387 | /* these counters are modified from e1000_tbi_adjust_stats, |
1da177e4 LT |
3388 | * called from the interrupt context, so they must only |
3389 | * be written while holding adapter->stats_lock | |
3390 | */ | |
3391 | ||
1dc32918 JP |
3392 | adapter->stats.crcerrs += er32(CRCERRS); |
3393 | adapter->stats.gprc += er32(GPRC); | |
3394 | adapter->stats.gorcl += er32(GORCL); | |
3395 | adapter->stats.gorch += er32(GORCH); | |
3396 | adapter->stats.bprc += er32(BPRC); | |
3397 | adapter->stats.mprc += er32(MPRC); | |
3398 | adapter->stats.roc += er32(ROC); | |
3399 | ||
1532ecea JB |
3400 | adapter->stats.prc64 += er32(PRC64); |
3401 | adapter->stats.prc127 += er32(PRC127); | |
3402 | adapter->stats.prc255 += er32(PRC255); | |
3403 | adapter->stats.prc511 += er32(PRC511); | |
3404 | adapter->stats.prc1023 += er32(PRC1023); | |
3405 | adapter->stats.prc1522 += er32(PRC1522); | |
1dc32918 JP |
3406 | |
3407 | adapter->stats.symerrs += er32(SYMERRS); | |
3408 | adapter->stats.mpc += er32(MPC); | |
3409 | adapter->stats.scc += er32(SCC); | |
3410 | adapter->stats.ecol += er32(ECOL); | |
3411 | adapter->stats.mcc += er32(MCC); | |
3412 | adapter->stats.latecol += er32(LATECOL); | |
3413 | adapter->stats.dc += er32(DC); | |
3414 | adapter->stats.sec += er32(SEC); | |
3415 | adapter->stats.rlec += er32(RLEC); | |
3416 | adapter->stats.xonrxc += er32(XONRXC); | |
3417 | adapter->stats.xontxc += er32(XONTXC); | |
3418 | adapter->stats.xoffrxc += er32(XOFFRXC); | |
3419 | adapter->stats.xofftxc += er32(XOFFTXC); | |
3420 | adapter->stats.fcruc += er32(FCRUC); | |
3421 | adapter->stats.gptc += er32(GPTC); | |
3422 | adapter->stats.gotcl += er32(GOTCL); | |
3423 | adapter->stats.gotch += er32(GOTCH); | |
3424 | adapter->stats.rnbc += er32(RNBC); | |
3425 | adapter->stats.ruc += er32(RUC); | |
3426 | adapter->stats.rfc += er32(RFC); | |
3427 | adapter->stats.rjc += er32(RJC); | |
3428 | adapter->stats.torl += er32(TORL); | |
3429 | adapter->stats.torh += er32(TORH); | |
3430 | adapter->stats.totl += er32(TOTL); | |
3431 | adapter->stats.toth += er32(TOTH); | |
3432 | adapter->stats.tpr += er32(TPR); | |
3433 | ||
1532ecea JB |
3434 | adapter->stats.ptc64 += er32(PTC64); |
3435 | adapter->stats.ptc127 += er32(PTC127); | |
3436 | adapter->stats.ptc255 += er32(PTC255); | |
3437 | adapter->stats.ptc511 += er32(PTC511); | |
3438 | adapter->stats.ptc1023 += er32(PTC1023); | |
3439 | adapter->stats.ptc1522 += er32(PTC1522); | |
1dc32918 JP |
3440 | |
3441 | adapter->stats.mptc += er32(MPTC); | |
3442 | adapter->stats.bptc += er32(BPTC); | |
1da177e4 LT |
3443 | |
3444 | /* used for adaptive IFS */ | |
3445 | ||
1dc32918 | 3446 | hw->tx_packet_delta = er32(TPT); |
1da177e4 | 3447 | adapter->stats.tpt += hw->tx_packet_delta; |
1dc32918 | 3448 | hw->collision_delta = er32(COLC); |
1da177e4 LT |
3449 | adapter->stats.colc += hw->collision_delta; |
3450 | ||
96838a40 | 3451 | if (hw->mac_type >= e1000_82543) { |
1dc32918 JP |
3452 | adapter->stats.algnerrc += er32(ALGNERRC); |
3453 | adapter->stats.rxerrc += er32(RXERRC); | |
3454 | adapter->stats.tncrs += er32(TNCRS); | |
3455 | adapter->stats.cexterr += er32(CEXTERR); | |
3456 | adapter->stats.tsctc += er32(TSCTC); | |
3457 | adapter->stats.tsctfc += er32(TSCTFC); | |
1da177e4 LT |
3458 | } |
3459 | ||
3460 | /* Fill out the OS statistics structure */ | |
5fe31def AK |
3461 | netdev->stats.multicast = adapter->stats.mprc; |
3462 | netdev->stats.collisions = adapter->stats.colc; | |
1da177e4 LT |
3463 | |
3464 | /* Rx Errors */ | |
3465 | ||
87041639 JK |
3466 | /* RLEC on some newer hardware can be incorrect so build |
3467 | * our own version based on RUC and ROC */ | |
5fe31def | 3468 | netdev->stats.rx_errors = adapter->stats.rxerrc + |
1da177e4 | 3469 | adapter->stats.crcerrs + adapter->stats.algnerrc + |
87041639 JK |
3470 | adapter->stats.ruc + adapter->stats.roc + |
3471 | adapter->stats.cexterr; | |
49559854 | 3472 | adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc; |
5fe31def AK |
3473 | netdev->stats.rx_length_errors = adapter->stats.rlerrc; |
3474 | netdev->stats.rx_crc_errors = adapter->stats.crcerrs; | |
3475 | netdev->stats.rx_frame_errors = adapter->stats.algnerrc; | |
3476 | netdev->stats.rx_missed_errors = adapter->stats.mpc; | |
1da177e4 LT |
3477 | |
3478 | /* Tx Errors */ | |
49559854 | 3479 | adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol; |
5fe31def AK |
3480 | netdev->stats.tx_errors = adapter->stats.txerrc; |
3481 | netdev->stats.tx_aborted_errors = adapter->stats.ecol; | |
3482 | netdev->stats.tx_window_errors = adapter->stats.latecol; | |
3483 | netdev->stats.tx_carrier_errors = adapter->stats.tncrs; | |
1dc32918 | 3484 | if (hw->bad_tx_carr_stats_fd && |
167fb284 | 3485 | adapter->link_duplex == FULL_DUPLEX) { |
5fe31def | 3486 | netdev->stats.tx_carrier_errors = 0; |
167fb284 JG |
3487 | adapter->stats.tncrs = 0; |
3488 | } | |
1da177e4 LT |
3489 | |
3490 | /* Tx Dropped needs to be maintained elsewhere */ | |
3491 | ||
3492 | /* Phy Stats */ | |
96838a40 JB |
3493 | if (hw->media_type == e1000_media_type_copper) { |
3494 | if ((adapter->link_speed == SPEED_1000) && | |
1da177e4 LT |
3495 | (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
3496 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; | |
3497 | adapter->phy_stats.idle_errors += phy_tmp; | |
3498 | } | |
3499 | ||
96838a40 | 3500 | if ((hw->mac_type <= e1000_82546) && |
1da177e4 LT |
3501 | (hw->phy_type == e1000_phy_m88) && |
3502 | !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) | |
3503 | adapter->phy_stats.receive_errors += phy_tmp; | |
3504 | } | |
3505 | ||
15e376b4 | 3506 | /* Management Stats */ |
1dc32918 JP |
3507 | if (hw->has_smbus) { |
3508 | adapter->stats.mgptc += er32(MGTPTC); | |
3509 | adapter->stats.mgprc += er32(MGTPRC); | |
3510 | adapter->stats.mgpdc += er32(MGTPDC); | |
15e376b4 JG |
3511 | } |
3512 | ||
1da177e4 LT |
3513 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
3514 | } | |
9ac98284 | 3515 | |
1da177e4 LT |
3516 | /** |
3517 | * e1000_intr - Interrupt Handler | |
3518 | * @irq: interrupt number | |
3519 | * @data: pointer to a network interface device structure | |
1da177e4 LT |
3520 | **/ |
3521 | ||
64798845 | 3522 | static irqreturn_t e1000_intr(int irq, void *data) |
1da177e4 LT |
3523 | { |
3524 | struct net_device *netdev = data; | |
60490fe0 | 3525 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3526 | struct e1000_hw *hw = &adapter->hw; |
1532ecea | 3527 | u32 icr = er32(ICR); |
c3570acb | 3528 | |
4c11b8ad | 3529 | if (unlikely((!icr))) |
835bb129 JB |
3530 | return IRQ_NONE; /* Not our interrupt */ |
3531 | ||
4c11b8ad JB |
3532 | /* |
3533 | * we might have caused the interrupt, but the above | |
3534 | * read cleared it, and just in case the driver is | |
3535 | * down there is nothing to do so return handled | |
3536 | */ | |
3537 | if (unlikely(test_bit(__E1000_DOWN, &adapter->flags))) | |
3538 | return IRQ_HANDLED; | |
3539 | ||
96838a40 | 3540 | if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { |
1da177e4 | 3541 | hw->get_link_status = 1; |
1314bbf3 AK |
3542 | /* guard against interrupt when we're going down */ |
3543 | if (!test_bit(__E1000_DOWN, &adapter->flags)) | |
a4010afe | 3544 | schedule_delayed_work(&adapter->watchdog_task, 1); |
1da177e4 LT |
3545 | } |
3546 | ||
1532ecea JB |
3547 | /* disable interrupts, without the synchronize_irq bit */ |
3548 | ew32(IMC, ~0); | |
3549 | E1000_WRITE_FLUSH(); | |
3550 | ||
288379f0 | 3551 | if (likely(napi_schedule_prep(&adapter->napi))) { |
835bb129 JB |
3552 | adapter->total_tx_bytes = 0; |
3553 | adapter->total_tx_packets = 0; | |
3554 | adapter->total_rx_bytes = 0; | |
3555 | adapter->total_rx_packets = 0; | |
288379f0 | 3556 | __napi_schedule(&adapter->napi); |
a6c42322 | 3557 | } else { |
90fb5135 AK |
3558 | /* this really should not happen! if it does it is basically a |
3559 | * bug, but not a hard error, so enable ints and continue */ | |
a6c42322 JB |
3560 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
3561 | e1000_irq_enable(adapter); | |
3562 | } | |
1da177e4 | 3563 | |
1da177e4 LT |
3564 | return IRQ_HANDLED; |
3565 | } | |
3566 | ||
1da177e4 LT |
3567 | /** |
3568 | * e1000_clean - NAPI Rx polling callback | |
3569 | * @adapter: board private structure | |
3570 | **/ | |
64798845 | 3571 | static int e1000_clean(struct napi_struct *napi, int budget) |
1da177e4 | 3572 | { |
bea3348e | 3573 | struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); |
650b5a5c | 3574 | int tx_clean_complete = 0, work_done = 0; |
581d708e | 3575 | |
650b5a5c | 3576 | tx_clean_complete = e1000_clean_tx_irq(adapter, &adapter->tx_ring[0]); |
581d708e | 3577 | |
650b5a5c | 3578 | adapter->clean_rx(adapter, &adapter->rx_ring[0], &work_done, budget); |
581d708e | 3579 | |
650b5a5c | 3580 | if (!tx_clean_complete) |
d2c7ddd6 DM |
3581 | work_done = budget; |
3582 | ||
53e52c72 DM |
3583 | /* If budget not fully consumed, exit the polling mode */ |
3584 | if (work_done < budget) { | |
835bb129 JB |
3585 | if (likely(adapter->itr_setting & 3)) |
3586 | e1000_set_itr(adapter); | |
288379f0 | 3587 | napi_complete(napi); |
a6c42322 JB |
3588 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
3589 | e1000_irq_enable(adapter); | |
1da177e4 LT |
3590 | } |
3591 | ||
bea3348e | 3592 | return work_done; |
1da177e4 LT |
3593 | } |
3594 | ||
1da177e4 LT |
3595 | /** |
3596 | * e1000_clean_tx_irq - Reclaim resources after transmit completes | |
3597 | * @adapter: board private structure | |
3598 | **/ | |
64798845 JP |
3599 | static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
3600 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 3601 | { |
1dc32918 | 3602 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
3603 | struct net_device *netdev = adapter->netdev; |
3604 | struct e1000_tx_desc *tx_desc, *eop_desc; | |
3605 | struct e1000_buffer *buffer_info; | |
3606 | unsigned int i, eop; | |
2a1af5d7 | 3607 | unsigned int count = 0; |
835bb129 | 3608 | unsigned int total_tx_bytes=0, total_tx_packets=0; |
1da177e4 LT |
3609 | |
3610 | i = tx_ring->next_to_clean; | |
3611 | eop = tx_ring->buffer_info[i].next_to_watch; | |
3612 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
3613 | ||
ccfb342c AD |
3614 | while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && |
3615 | (count < tx_ring->count)) { | |
843f4267 | 3616 | bool cleaned = false; |
2d0bb1c1 | 3617 | rmb(); /* read buffer_info after eop_desc */ |
843f4267 | 3618 | for ( ; !cleaned; count++) { |
1da177e4 LT |
3619 | tx_desc = E1000_TX_DESC(*tx_ring, i); |
3620 | buffer_info = &tx_ring->buffer_info[i]; | |
3621 | cleaned = (i == eop); | |
3622 | ||
835bb129 | 3623 | if (cleaned) { |
31c15a2f DN |
3624 | total_tx_packets += buffer_info->segs; |
3625 | total_tx_bytes += buffer_info->bytecount; | |
835bb129 | 3626 | } |
fd803241 | 3627 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
a9ebadd6 | 3628 | tx_desc->upper.data = 0; |
1da177e4 | 3629 | |
96838a40 | 3630 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 | 3631 | } |
581d708e | 3632 | |
1da177e4 LT |
3633 | eop = tx_ring->buffer_info[i].next_to_watch; |
3634 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
3635 | } | |
3636 | ||
3637 | tx_ring->next_to_clean = i; | |
3638 | ||
77b2aad5 | 3639 | #define TX_WAKE_THRESHOLD 32 |
843f4267 | 3640 | if (unlikely(count && netif_carrier_ok(netdev) && |
65c7973f JB |
3641 | E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) { |
3642 | /* Make sure that anybody stopping the queue after this | |
3643 | * sees the new next_to_clean. | |
3644 | */ | |
3645 | smp_mb(); | |
cdd7549e JB |
3646 | |
3647 | if (netif_queue_stopped(netdev) && | |
3648 | !(test_bit(__E1000_DOWN, &adapter->flags))) { | |
77b2aad5 | 3649 | netif_wake_queue(netdev); |
fcfb1224 JB |
3650 | ++adapter->restart_queue; |
3651 | } | |
77b2aad5 | 3652 | } |
2648345f | 3653 | |
581d708e | 3654 | if (adapter->detect_tx_hung) { |
2648345f | 3655 | /* Detect a transmit hang in hardware, this serializes the |
1da177e4 | 3656 | * check with the clearing of time_stamp and movement of i */ |
c3033b01 | 3657 | adapter->detect_tx_hung = false; |
cdd7549e JB |
3658 | if (tx_ring->buffer_info[eop].time_stamp && |
3659 | time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + | |
8e95a202 JP |
3660 | (adapter->tx_timeout_factor * HZ)) && |
3661 | !(er32(STATUS) & E1000_STATUS_TXOFF)) { | |
70b8f1e1 MC |
3662 | |
3663 | /* detected Tx unit hang */ | |
feb8f478 | 3664 | e_err(drv, "Detected Tx Unit Hang\n" |
675ad473 ET |
3665 | " Tx Queue <%lu>\n" |
3666 | " TDH <%x>\n" | |
3667 | " TDT <%x>\n" | |
3668 | " next_to_use <%x>\n" | |
3669 | " next_to_clean <%x>\n" | |
3670 | "buffer_info[next_to_clean]\n" | |
3671 | " time_stamp <%lx>\n" | |
3672 | " next_to_watch <%x>\n" | |
3673 | " jiffies <%lx>\n" | |
3674 | " next_to_watch.status <%x>\n", | |
7bfa4816 JK |
3675 | (unsigned long)((tx_ring - adapter->tx_ring) / |
3676 | sizeof(struct e1000_tx_ring)), | |
1dc32918 JP |
3677 | readl(hw->hw_addr + tx_ring->tdh), |
3678 | readl(hw->hw_addr + tx_ring->tdt), | |
70b8f1e1 | 3679 | tx_ring->next_to_use, |
392137fa | 3680 | tx_ring->next_to_clean, |
cdd7549e | 3681 | tx_ring->buffer_info[eop].time_stamp, |
70b8f1e1 MC |
3682 | eop, |
3683 | jiffies, | |
3684 | eop_desc->upper.fields.status); | |
1da177e4 | 3685 | netif_stop_queue(netdev); |
70b8f1e1 | 3686 | } |
1da177e4 | 3687 | } |
835bb129 JB |
3688 | adapter->total_tx_bytes += total_tx_bytes; |
3689 | adapter->total_tx_packets += total_tx_packets; | |
5fe31def AK |
3690 | netdev->stats.tx_bytes += total_tx_bytes; |
3691 | netdev->stats.tx_packets += total_tx_packets; | |
807540ba | 3692 | return count < tx_ring->count; |
1da177e4 LT |
3693 | } |
3694 | ||
3695 | /** | |
3696 | * e1000_rx_checksum - Receive Checksum Offload for 82543 | |
2d7edb92 MC |
3697 | * @adapter: board private structure |
3698 | * @status_err: receive descriptor status and error fields | |
3699 | * @csum: receive descriptor csum field | |
3700 | * @sk_buff: socket buffer with received data | |
1da177e4 LT |
3701 | **/ |
3702 | ||
64798845 JP |
3703 | static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, |
3704 | u32 csum, struct sk_buff *skb) | |
1da177e4 | 3705 | { |
1dc32918 | 3706 | struct e1000_hw *hw = &adapter->hw; |
406874a7 JP |
3707 | u16 status = (u16)status_err; |
3708 | u8 errors = (u8)(status_err >> 24); | |
bc8acf2c ED |
3709 | |
3710 | skb_checksum_none_assert(skb); | |
2d7edb92 | 3711 | |
1da177e4 | 3712 | /* 82543 or newer only */ |
1dc32918 | 3713 | if (unlikely(hw->mac_type < e1000_82543)) return; |
1da177e4 | 3714 | /* Ignore Checksum bit is set */ |
96838a40 | 3715 | if (unlikely(status & E1000_RXD_STAT_IXSM)) return; |
2d7edb92 | 3716 | /* TCP/UDP checksum error bit is set */ |
96838a40 | 3717 | if (unlikely(errors & E1000_RXD_ERR_TCPE)) { |
1da177e4 | 3718 | /* let the stack verify checksum errors */ |
1da177e4 | 3719 | adapter->hw_csum_err++; |
2d7edb92 MC |
3720 | return; |
3721 | } | |
3722 | /* TCP/UDP Checksum has not been calculated */ | |
1532ecea JB |
3723 | if (!(status & E1000_RXD_STAT_TCPCS)) |
3724 | return; | |
3725 | ||
2d7edb92 MC |
3726 | /* It must be a TCP or UDP packet with a valid checksum */ |
3727 | if (likely(status & E1000_RXD_STAT_TCPCS)) { | |
1da177e4 LT |
3728 | /* TCP checksum is good */ |
3729 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1da177e4 | 3730 | } |
2d7edb92 | 3731 | adapter->hw_csum_good++; |
1da177e4 LT |
3732 | } |
3733 | ||
edbbb3ca JB |
3734 | /** |
3735 | * e1000_consume_page - helper function | |
3736 | **/ | |
3737 | static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, | |
3738 | u16 length) | |
3739 | { | |
3740 | bi->page = NULL; | |
3741 | skb->len += length; | |
3742 | skb->data_len += length; | |
ed64b3cc | 3743 | skb->truesize += PAGE_SIZE; |
edbbb3ca JB |
3744 | } |
3745 | ||
3746 | /** | |
3747 | * e1000_receive_skb - helper function to handle rx indications | |
3748 | * @adapter: board private structure | |
3749 | * @status: descriptor status field as written by hardware | |
3750 | * @vlan: descriptor vlan field as written by hardware (no le/be conversion) | |
3751 | * @skb: pointer to sk_buff to be indicated to stack | |
3752 | */ | |
3753 | static void e1000_receive_skb(struct e1000_adapter *adapter, u8 status, | |
3754 | __le16 vlan, struct sk_buff *skb) | |
3755 | { | |
6a08d194 JB |
3756 | skb->protocol = eth_type_trans(skb, adapter->netdev); |
3757 | ||
5622e404 JP |
3758 | if (status & E1000_RXD_STAT_VP) { |
3759 | u16 vid = le16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK; | |
3760 | ||
3761 | __vlan_hwaccel_put_tag(skb, vid); | |
3762 | } | |
3763 | napi_gro_receive(&adapter->napi, skb); | |
edbbb3ca JB |
3764 | } |
3765 | ||
3766 | /** | |
3767 | * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy | |
3768 | * @adapter: board private structure | |
3769 | * @rx_ring: ring to clean | |
3770 | * @work_done: amount of napi work completed this call | |
3771 | * @work_to_do: max amount of work allowed for this call to do | |
3772 | * | |
3773 | * the return value indicates whether actual cleaning was done, there | |
3774 | * is no guarantee that everything was cleaned | |
3775 | */ | |
3776 | static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, | |
3777 | struct e1000_rx_ring *rx_ring, | |
3778 | int *work_done, int work_to_do) | |
3779 | { | |
3780 | struct e1000_hw *hw = &adapter->hw; | |
3781 | struct net_device *netdev = adapter->netdev; | |
3782 | struct pci_dev *pdev = adapter->pdev; | |
3783 | struct e1000_rx_desc *rx_desc, *next_rxd; | |
3784 | struct e1000_buffer *buffer_info, *next_buffer; | |
3785 | unsigned long irq_flags; | |
3786 | u32 length; | |
3787 | unsigned int i; | |
3788 | int cleaned_count = 0; | |
3789 | bool cleaned = false; | |
3790 | unsigned int total_rx_bytes=0, total_rx_packets=0; | |
3791 | ||
3792 | i = rx_ring->next_to_clean; | |
3793 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
3794 | buffer_info = &rx_ring->buffer_info[i]; | |
3795 | ||
3796 | while (rx_desc->status & E1000_RXD_STAT_DD) { | |
3797 | struct sk_buff *skb; | |
3798 | u8 status; | |
3799 | ||
3800 | if (*work_done >= work_to_do) | |
3801 | break; | |
3802 | (*work_done)++; | |
2d0bb1c1 | 3803 | rmb(); /* read descriptor and rx_buffer_info after status DD */ |
edbbb3ca JB |
3804 | |
3805 | status = rx_desc->status; | |
3806 | skb = buffer_info->skb; | |
3807 | buffer_info->skb = NULL; | |
3808 | ||
3809 | if (++i == rx_ring->count) i = 0; | |
3810 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
3811 | prefetch(next_rxd); | |
3812 | ||
3813 | next_buffer = &rx_ring->buffer_info[i]; | |
3814 | ||
3815 | cleaned = true; | |
3816 | cleaned_count++; | |
b16f53be NN |
3817 | dma_unmap_page(&pdev->dev, buffer_info->dma, |
3818 | buffer_info->length, DMA_FROM_DEVICE); | |
edbbb3ca JB |
3819 | buffer_info->dma = 0; |
3820 | ||
3821 | length = le16_to_cpu(rx_desc->length); | |
3822 | ||
3823 | /* errors is only valid for DD + EOP descriptors */ | |
3824 | if (unlikely((status & E1000_RXD_STAT_EOP) && | |
3825 | (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) { | |
3826 | u8 last_byte = *(skb->data + length - 1); | |
3827 | if (TBI_ACCEPT(hw, status, rx_desc->errors, length, | |
3828 | last_byte)) { | |
3829 | spin_lock_irqsave(&adapter->stats_lock, | |
3830 | irq_flags); | |
3831 | e1000_tbi_adjust_stats(hw, &adapter->stats, | |
3832 | length, skb->data); | |
3833 | spin_unlock_irqrestore(&adapter->stats_lock, | |
3834 | irq_flags); | |
3835 | length--; | |
3836 | } else { | |
3837 | /* recycle both page and skb */ | |
3838 | buffer_info->skb = skb; | |
3839 | /* an error means any chain goes out the window | |
3840 | * too */ | |
3841 | if (rx_ring->rx_skb_top) | |
3842 | dev_kfree_skb(rx_ring->rx_skb_top); | |
3843 | rx_ring->rx_skb_top = NULL; | |
3844 | goto next_desc; | |
3845 | } | |
3846 | } | |
3847 | ||
3848 | #define rxtop rx_ring->rx_skb_top | |
3849 | if (!(status & E1000_RXD_STAT_EOP)) { | |
3850 | /* this descriptor is only the beginning (or middle) */ | |
3851 | if (!rxtop) { | |
3852 | /* this is the beginning of a chain */ | |
3853 | rxtop = skb; | |
3854 | skb_fill_page_desc(rxtop, 0, buffer_info->page, | |
3855 | 0, length); | |
3856 | } else { | |
3857 | /* this is the middle of a chain */ | |
3858 | skb_fill_page_desc(rxtop, | |
3859 | skb_shinfo(rxtop)->nr_frags, | |
3860 | buffer_info->page, 0, length); | |
3861 | /* re-use the skb, only consumed the page */ | |
3862 | buffer_info->skb = skb; | |
3863 | } | |
3864 | e1000_consume_page(buffer_info, rxtop, length); | |
3865 | goto next_desc; | |
3866 | } else { | |
3867 | if (rxtop) { | |
3868 | /* end of the chain */ | |
3869 | skb_fill_page_desc(rxtop, | |
3870 | skb_shinfo(rxtop)->nr_frags, | |
3871 | buffer_info->page, 0, length); | |
3872 | /* re-use the current skb, we only consumed the | |
3873 | * page */ | |
3874 | buffer_info->skb = skb; | |
3875 | skb = rxtop; | |
3876 | rxtop = NULL; | |
3877 | e1000_consume_page(buffer_info, skb, length); | |
3878 | } else { | |
3879 | /* no chain, got EOP, this buf is the packet | |
3880 | * copybreak to save the put_page/alloc_page */ | |
3881 | if (length <= copybreak && | |
3882 | skb_tailroom(skb) >= length) { | |
3883 | u8 *vaddr; | |
3884 | vaddr = kmap_atomic(buffer_info->page, | |
3885 | KM_SKB_DATA_SOFTIRQ); | |
3886 | memcpy(skb_tail_pointer(skb), vaddr, length); | |
3887 | kunmap_atomic(vaddr, | |
3888 | KM_SKB_DATA_SOFTIRQ); | |
3889 | /* re-use the page, so don't erase | |
3890 | * buffer_info->page */ | |
3891 | skb_put(skb, length); | |
3892 | } else { | |
3893 | skb_fill_page_desc(skb, 0, | |
3894 | buffer_info->page, 0, | |
3895 | length); | |
3896 | e1000_consume_page(buffer_info, skb, | |
3897 | length); | |
3898 | } | |
3899 | } | |
3900 | } | |
3901 | ||
3902 | /* Receive Checksum Offload XXX recompute due to CRC strip? */ | |
3903 | e1000_rx_checksum(adapter, | |
3904 | (u32)(status) | | |
3905 | ((u32)(rx_desc->errors) << 24), | |
3906 | le16_to_cpu(rx_desc->csum), skb); | |
3907 | ||
3908 | pskb_trim(skb, skb->len - 4); | |
3909 | ||
3910 | /* probably a little skewed due to removing CRC */ | |
3911 | total_rx_bytes += skb->len; | |
3912 | total_rx_packets++; | |
3913 | ||
3914 | /* eth type trans needs skb->data to point to something */ | |
3915 | if (!pskb_may_pull(skb, ETH_HLEN)) { | |
feb8f478 | 3916 | e_err(drv, "pskb_may_pull failed.\n"); |
edbbb3ca JB |
3917 | dev_kfree_skb(skb); |
3918 | goto next_desc; | |
3919 | } | |
3920 | ||
edbbb3ca JB |
3921 | e1000_receive_skb(adapter, status, rx_desc->special, skb); |
3922 | ||
3923 | next_desc: | |
3924 | rx_desc->status = 0; | |
3925 | ||
3926 | /* return some buffers to hardware, one at a time is too slow */ | |
3927 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
3928 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
3929 | cleaned_count = 0; | |
3930 | } | |
3931 | ||
3932 | /* use prefetched values */ | |
3933 | rx_desc = next_rxd; | |
3934 | buffer_info = next_buffer; | |
3935 | } | |
3936 | rx_ring->next_to_clean = i; | |
3937 | ||
3938 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
3939 | if (cleaned_count) | |
3940 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
3941 | ||
3942 | adapter->total_rx_packets += total_rx_packets; | |
3943 | adapter->total_rx_bytes += total_rx_bytes; | |
5fe31def AK |
3944 | netdev->stats.rx_bytes += total_rx_bytes; |
3945 | netdev->stats.rx_packets += total_rx_packets; | |
edbbb3ca JB |
3946 | return cleaned; |
3947 | } | |
3948 | ||
57bf6eef JP |
3949 | /* |
3950 | * this should improve performance for small packets with large amounts | |
3951 | * of reassembly being done in the stack | |
3952 | */ | |
3953 | static void e1000_check_copybreak(struct net_device *netdev, | |
3954 | struct e1000_buffer *buffer_info, | |
3955 | u32 length, struct sk_buff **skb) | |
3956 | { | |
3957 | struct sk_buff *new_skb; | |
3958 | ||
3959 | if (length > copybreak) | |
3960 | return; | |
3961 | ||
3962 | new_skb = netdev_alloc_skb_ip_align(netdev, length); | |
3963 | if (!new_skb) | |
3964 | return; | |
3965 | ||
3966 | skb_copy_to_linear_data_offset(new_skb, -NET_IP_ALIGN, | |
3967 | (*skb)->data - NET_IP_ALIGN, | |
3968 | length + NET_IP_ALIGN); | |
3969 | /* save the skb in buffer_info as good */ | |
3970 | buffer_info->skb = *skb; | |
3971 | *skb = new_skb; | |
3972 | } | |
3973 | ||
1da177e4 | 3974 | /** |
2d7edb92 | 3975 | * e1000_clean_rx_irq - Send received data up the network stack; legacy |
1da177e4 | 3976 | * @adapter: board private structure |
edbbb3ca JB |
3977 | * @rx_ring: ring to clean |
3978 | * @work_done: amount of napi work completed this call | |
3979 | * @work_to_do: max amount of work allowed for this call to do | |
3980 | */ | |
64798845 JP |
3981 | static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
3982 | struct e1000_rx_ring *rx_ring, | |
3983 | int *work_done, int work_to_do) | |
1da177e4 | 3984 | { |
1dc32918 | 3985 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
3986 | struct net_device *netdev = adapter->netdev; |
3987 | struct pci_dev *pdev = adapter->pdev; | |
86c3d59f JB |
3988 | struct e1000_rx_desc *rx_desc, *next_rxd; |
3989 | struct e1000_buffer *buffer_info, *next_buffer; | |
1da177e4 | 3990 | unsigned long flags; |
406874a7 | 3991 | u32 length; |
1da177e4 | 3992 | unsigned int i; |
72d64a43 | 3993 | int cleaned_count = 0; |
c3033b01 | 3994 | bool cleaned = false; |
835bb129 | 3995 | unsigned int total_rx_bytes=0, total_rx_packets=0; |
1da177e4 LT |
3996 | |
3997 | i = rx_ring->next_to_clean; | |
3998 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
b92ff8ee | 3999 | buffer_info = &rx_ring->buffer_info[i]; |
1da177e4 | 4000 | |
b92ff8ee | 4001 | while (rx_desc->status & E1000_RXD_STAT_DD) { |
24f476ee | 4002 | struct sk_buff *skb; |
a292ca6e | 4003 | u8 status; |
90fb5135 | 4004 | |
96838a40 | 4005 | if (*work_done >= work_to_do) |
1da177e4 LT |
4006 | break; |
4007 | (*work_done)++; | |
2d0bb1c1 | 4008 | rmb(); /* read descriptor and rx_buffer_info after status DD */ |
c3570acb | 4009 | |
a292ca6e | 4010 | status = rx_desc->status; |
b92ff8ee | 4011 | skb = buffer_info->skb; |
86c3d59f JB |
4012 | buffer_info->skb = NULL; |
4013 | ||
30320be8 JK |
4014 | prefetch(skb->data - NET_IP_ALIGN); |
4015 | ||
86c3d59f JB |
4016 | if (++i == rx_ring->count) i = 0; |
4017 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
30320be8 JK |
4018 | prefetch(next_rxd); |
4019 | ||
86c3d59f | 4020 | next_buffer = &rx_ring->buffer_info[i]; |
86c3d59f | 4021 | |
c3033b01 | 4022 | cleaned = true; |
72d64a43 | 4023 | cleaned_count++; |
b16f53be NN |
4024 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
4025 | buffer_info->length, DMA_FROM_DEVICE); | |
679be3ba | 4026 | buffer_info->dma = 0; |
1da177e4 | 4027 | |
1da177e4 | 4028 | length = le16_to_cpu(rx_desc->length); |
ea30e119 | 4029 | /* !EOP means multiple descriptors were used to store a single |
40a14dea JB |
4030 | * packet, if thats the case we need to toss it. In fact, we |
4031 | * to toss every packet with the EOP bit clear and the next | |
4032 | * frame that _does_ have the EOP bit set, as it is by | |
4033 | * definition only a frame fragment | |
4034 | */ | |
4035 | if (unlikely(!(status & E1000_RXD_STAT_EOP))) | |
4036 | adapter->discarding = true; | |
4037 | ||
4038 | if (adapter->discarding) { | |
a1415ee6 | 4039 | /* All receives must fit into a single buffer */ |
feb8f478 | 4040 | e_dbg("Receive packet consumed multiple buffers\n"); |
864c4e45 | 4041 | /* recycle */ |
8fc897b0 | 4042 | buffer_info->skb = skb; |
40a14dea JB |
4043 | if (status & E1000_RXD_STAT_EOP) |
4044 | adapter->discarding = false; | |
1da177e4 LT |
4045 | goto next_desc; |
4046 | } | |
4047 | ||
96838a40 | 4048 | if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { |
edbbb3ca | 4049 | u8 last_byte = *(skb->data + length - 1); |
1dc32918 JP |
4050 | if (TBI_ACCEPT(hw, status, rx_desc->errors, length, |
4051 | last_byte)) { | |
1da177e4 | 4052 | spin_lock_irqsave(&adapter->stats_lock, flags); |
1dc32918 | 4053 | e1000_tbi_adjust_stats(hw, &adapter->stats, |
1da177e4 LT |
4054 | length, skb->data); |
4055 | spin_unlock_irqrestore(&adapter->stats_lock, | |
4056 | flags); | |
4057 | length--; | |
4058 | } else { | |
9e2feace AK |
4059 | /* recycle */ |
4060 | buffer_info->skb = skb; | |
1da177e4 LT |
4061 | goto next_desc; |
4062 | } | |
1cb5821f | 4063 | } |
1da177e4 | 4064 | |
d2a1e213 JB |
4065 | /* adjust length to remove Ethernet CRC, this must be |
4066 | * done after the TBI_ACCEPT workaround above */ | |
4067 | length -= 4; | |
4068 | ||
835bb129 JB |
4069 | /* probably a little skewed due to removing CRC */ |
4070 | total_rx_bytes += length; | |
4071 | total_rx_packets++; | |
4072 | ||
57bf6eef JP |
4073 | e1000_check_copybreak(netdev, buffer_info, length, &skb); |
4074 | ||
996695de | 4075 | skb_put(skb, length); |
1da177e4 LT |
4076 | |
4077 | /* Receive Checksum Offload */ | |
a292ca6e | 4078 | e1000_rx_checksum(adapter, |
406874a7 JP |
4079 | (u32)(status) | |
4080 | ((u32)(rx_desc->errors) << 24), | |
c3d7a3a4 | 4081 | le16_to_cpu(rx_desc->csum), skb); |
96838a40 | 4082 | |
edbbb3ca | 4083 | e1000_receive_skb(adapter, status, rx_desc->special, skb); |
c3570acb | 4084 | |
1da177e4 LT |
4085 | next_desc: |
4086 | rx_desc->status = 0; | |
1da177e4 | 4087 | |
72d64a43 JK |
4088 | /* return some buffers to hardware, one at a time is too slow */ |
4089 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
4090 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
4091 | cleaned_count = 0; | |
4092 | } | |
4093 | ||
30320be8 | 4094 | /* use prefetched values */ |
86c3d59f JB |
4095 | rx_desc = next_rxd; |
4096 | buffer_info = next_buffer; | |
1da177e4 | 4097 | } |
1da177e4 | 4098 | rx_ring->next_to_clean = i; |
72d64a43 JK |
4099 | |
4100 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
4101 | if (cleaned_count) | |
4102 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
2d7edb92 | 4103 | |
835bb129 JB |
4104 | adapter->total_rx_packets += total_rx_packets; |
4105 | adapter->total_rx_bytes += total_rx_bytes; | |
5fe31def AK |
4106 | netdev->stats.rx_bytes += total_rx_bytes; |
4107 | netdev->stats.rx_packets += total_rx_packets; | |
2d7edb92 MC |
4108 | return cleaned; |
4109 | } | |
4110 | ||
edbbb3ca JB |
4111 | /** |
4112 | * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers | |
4113 | * @adapter: address of board private structure | |
4114 | * @rx_ring: pointer to receive ring structure | |
4115 | * @cleaned_count: number of buffers to allocate this pass | |
4116 | **/ | |
4117 | ||
4118 | static void | |
4119 | e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, | |
4120 | struct e1000_rx_ring *rx_ring, int cleaned_count) | |
4121 | { | |
4122 | struct net_device *netdev = adapter->netdev; | |
4123 | struct pci_dev *pdev = adapter->pdev; | |
4124 | struct e1000_rx_desc *rx_desc; | |
4125 | struct e1000_buffer *buffer_info; | |
4126 | struct sk_buff *skb; | |
4127 | unsigned int i; | |
89d71a66 | 4128 | unsigned int bufsz = 256 - 16 /*for skb_reserve */ ; |
edbbb3ca JB |
4129 | |
4130 | i = rx_ring->next_to_use; | |
4131 | buffer_info = &rx_ring->buffer_info[i]; | |
4132 | ||
4133 | while (cleaned_count--) { | |
4134 | skb = buffer_info->skb; | |
4135 | if (skb) { | |
4136 | skb_trim(skb, 0); | |
4137 | goto check_page; | |
4138 | } | |
4139 | ||
89d71a66 | 4140 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
edbbb3ca JB |
4141 | if (unlikely(!skb)) { |
4142 | /* Better luck next round */ | |
4143 | adapter->alloc_rx_buff_failed++; | |
4144 | break; | |
4145 | } | |
4146 | ||
4147 | /* Fix for errata 23, can't cross 64kB boundary */ | |
4148 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { | |
4149 | struct sk_buff *oldskb = skb; | |
feb8f478 ET |
4150 | e_err(rx_err, "skb align check failed: %u bytes at " |
4151 | "%p\n", bufsz, skb->data); | |
edbbb3ca | 4152 | /* Try again, without freeing the previous */ |
89d71a66 | 4153 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
edbbb3ca JB |
4154 | /* Failed allocation, critical failure */ |
4155 | if (!skb) { | |
4156 | dev_kfree_skb(oldskb); | |
4157 | adapter->alloc_rx_buff_failed++; | |
4158 | break; | |
4159 | } | |
4160 | ||
4161 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { | |
4162 | /* give up */ | |
4163 | dev_kfree_skb(skb); | |
4164 | dev_kfree_skb(oldskb); | |
4165 | break; /* while (cleaned_count--) */ | |
4166 | } | |
4167 | ||
4168 | /* Use new allocation */ | |
4169 | dev_kfree_skb(oldskb); | |
4170 | } | |
edbbb3ca JB |
4171 | buffer_info->skb = skb; |
4172 | buffer_info->length = adapter->rx_buffer_len; | |
4173 | check_page: | |
4174 | /* allocate a new page if necessary */ | |
4175 | if (!buffer_info->page) { | |
4176 | buffer_info->page = alloc_page(GFP_ATOMIC); | |
4177 | if (unlikely(!buffer_info->page)) { | |
4178 | adapter->alloc_rx_buff_failed++; | |
4179 | break; | |
4180 | } | |
4181 | } | |
4182 | ||
b5abb028 | 4183 | if (!buffer_info->dma) { |
b16f53be | 4184 | buffer_info->dma = dma_map_page(&pdev->dev, |
edbbb3ca | 4185 | buffer_info->page, 0, |
b16f53be NN |
4186 | buffer_info->length, |
4187 | DMA_FROM_DEVICE); | |
4188 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { | |
b5abb028 AB |
4189 | put_page(buffer_info->page); |
4190 | dev_kfree_skb(skb); | |
4191 | buffer_info->page = NULL; | |
4192 | buffer_info->skb = NULL; | |
4193 | buffer_info->dma = 0; | |
4194 | adapter->alloc_rx_buff_failed++; | |
4195 | break; /* while !buffer_info->skb */ | |
4196 | } | |
4197 | } | |
edbbb3ca JB |
4198 | |
4199 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
4200 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
4201 | ||
4202 | if (unlikely(++i == rx_ring->count)) | |
4203 | i = 0; | |
4204 | buffer_info = &rx_ring->buffer_info[i]; | |
4205 | } | |
4206 | ||
4207 | if (likely(rx_ring->next_to_use != i)) { | |
4208 | rx_ring->next_to_use = i; | |
4209 | if (unlikely(i-- == 0)) | |
4210 | i = (rx_ring->count - 1); | |
4211 | ||
4212 | /* Force memory writes to complete before letting h/w | |
4213 | * know there are new descriptors to fetch. (Only | |
4214 | * applicable for weak-ordered memory model archs, | |
4215 | * such as IA-64). */ | |
4216 | wmb(); | |
4217 | writel(i, adapter->hw.hw_addr + rx_ring->rdt); | |
4218 | } | |
4219 | } | |
4220 | ||
1da177e4 | 4221 | /** |
2d7edb92 | 4222 | * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
1da177e4 LT |
4223 | * @adapter: address of board private structure |
4224 | **/ | |
4225 | ||
64798845 JP |
4226 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
4227 | struct e1000_rx_ring *rx_ring, | |
4228 | int cleaned_count) | |
1da177e4 | 4229 | { |
1dc32918 | 4230 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
4231 | struct net_device *netdev = adapter->netdev; |
4232 | struct pci_dev *pdev = adapter->pdev; | |
4233 | struct e1000_rx_desc *rx_desc; | |
4234 | struct e1000_buffer *buffer_info; | |
4235 | struct sk_buff *skb; | |
2648345f | 4236 | unsigned int i; |
89d71a66 | 4237 | unsigned int bufsz = adapter->rx_buffer_len; |
1da177e4 LT |
4238 | |
4239 | i = rx_ring->next_to_use; | |
4240 | buffer_info = &rx_ring->buffer_info[i]; | |
4241 | ||
a292ca6e | 4242 | while (cleaned_count--) { |
ca6f7224 CH |
4243 | skb = buffer_info->skb; |
4244 | if (skb) { | |
a292ca6e JK |
4245 | skb_trim(skb, 0); |
4246 | goto map_skb; | |
4247 | } | |
4248 | ||
89d71a66 | 4249 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
96838a40 | 4250 | if (unlikely(!skb)) { |
1da177e4 | 4251 | /* Better luck next round */ |
72d64a43 | 4252 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
4253 | break; |
4254 | } | |
4255 | ||
2648345f | 4256 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
4257 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
4258 | struct sk_buff *oldskb = skb; | |
feb8f478 ET |
4259 | e_err(rx_err, "skb align check failed: %u bytes at " |
4260 | "%p\n", bufsz, skb->data); | |
2648345f | 4261 | /* Try again, without freeing the previous */ |
89d71a66 | 4262 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
2648345f | 4263 | /* Failed allocation, critical failure */ |
1da177e4 LT |
4264 | if (!skb) { |
4265 | dev_kfree_skb(oldskb); | |
edbbb3ca | 4266 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
4267 | break; |
4268 | } | |
2648345f | 4269 | |
1da177e4 LT |
4270 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
4271 | /* give up */ | |
4272 | dev_kfree_skb(skb); | |
4273 | dev_kfree_skb(oldskb); | |
edbbb3ca | 4274 | adapter->alloc_rx_buff_failed++; |
1da177e4 | 4275 | break; /* while !buffer_info->skb */ |
1da177e4 | 4276 | } |
ca6f7224 CH |
4277 | |
4278 | /* Use new allocation */ | |
4279 | dev_kfree_skb(oldskb); | |
1da177e4 | 4280 | } |
1da177e4 LT |
4281 | buffer_info->skb = skb; |
4282 | buffer_info->length = adapter->rx_buffer_len; | |
a292ca6e | 4283 | map_skb: |
b16f53be | 4284 | buffer_info->dma = dma_map_single(&pdev->dev, |
1da177e4 | 4285 | skb->data, |
edbbb3ca | 4286 | buffer_info->length, |
b16f53be NN |
4287 | DMA_FROM_DEVICE); |
4288 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { | |
b5abb028 AB |
4289 | dev_kfree_skb(skb); |
4290 | buffer_info->skb = NULL; | |
4291 | buffer_info->dma = 0; | |
4292 | adapter->alloc_rx_buff_failed++; | |
4293 | break; /* while !buffer_info->skb */ | |
4294 | } | |
1da177e4 | 4295 | |
edbbb3ca JB |
4296 | /* |
4297 | * XXX if it was allocated cleanly it will never map to a | |
4298 | * boundary crossing | |
4299 | */ | |
4300 | ||
2648345f MC |
4301 | /* Fix for errata 23, can't cross 64kB boundary */ |
4302 | if (!e1000_check_64k_bound(adapter, | |
4303 | (void *)(unsigned long)buffer_info->dma, | |
4304 | adapter->rx_buffer_len)) { | |
feb8f478 ET |
4305 | e_err(rx_err, "dma align check failed: %u bytes at " |
4306 | "%p\n", adapter->rx_buffer_len, | |
675ad473 | 4307 | (void *)(unsigned long)buffer_info->dma); |
1da177e4 LT |
4308 | dev_kfree_skb(skb); |
4309 | buffer_info->skb = NULL; | |
4310 | ||
b16f53be | 4311 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
1da177e4 | 4312 | adapter->rx_buffer_len, |
b16f53be | 4313 | DMA_FROM_DEVICE); |
679be3ba | 4314 | buffer_info->dma = 0; |
1da177e4 | 4315 | |
edbbb3ca | 4316 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
4317 | break; /* while !buffer_info->skb */ |
4318 | } | |
1da177e4 LT |
4319 | rx_desc = E1000_RX_DESC(*rx_ring, i); |
4320 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
4321 | ||
96838a40 JB |
4322 | if (unlikely(++i == rx_ring->count)) |
4323 | i = 0; | |
1da177e4 LT |
4324 | buffer_info = &rx_ring->buffer_info[i]; |
4325 | } | |
4326 | ||
b92ff8ee JB |
4327 | if (likely(rx_ring->next_to_use != i)) { |
4328 | rx_ring->next_to_use = i; | |
4329 | if (unlikely(i-- == 0)) | |
4330 | i = (rx_ring->count - 1); | |
4331 | ||
4332 | /* Force memory writes to complete before letting h/w | |
4333 | * know there are new descriptors to fetch. (Only | |
4334 | * applicable for weak-ordered memory model archs, | |
4335 | * such as IA-64). */ | |
4336 | wmb(); | |
1dc32918 | 4337 | writel(i, hw->hw_addr + rx_ring->rdt); |
b92ff8ee | 4338 | } |
1da177e4 LT |
4339 | } |
4340 | ||
4341 | /** | |
4342 | * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. | |
4343 | * @adapter: | |
4344 | **/ | |
4345 | ||
64798845 | 4346 | static void e1000_smartspeed(struct e1000_adapter *adapter) |
1da177e4 | 4347 | { |
1dc32918 | 4348 | struct e1000_hw *hw = &adapter->hw; |
406874a7 JP |
4349 | u16 phy_status; |
4350 | u16 phy_ctrl; | |
1da177e4 | 4351 | |
1dc32918 JP |
4352 | if ((hw->phy_type != e1000_phy_igp) || !hw->autoneg || |
4353 | !(hw->autoneg_advertised & ADVERTISE_1000_FULL)) | |
1da177e4 LT |
4354 | return; |
4355 | ||
96838a40 | 4356 | if (adapter->smartspeed == 0) { |
1da177e4 LT |
4357 | /* If Master/Slave config fault is asserted twice, |
4358 | * we assume back-to-back */ | |
1dc32918 | 4359 | e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); |
96838a40 | 4360 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1dc32918 | 4361 | e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); |
96838a40 | 4362 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1dc32918 | 4363 | e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl); |
96838a40 | 4364 | if (phy_ctrl & CR_1000T_MS_ENABLE) { |
1da177e4 | 4365 | phy_ctrl &= ~CR_1000T_MS_ENABLE; |
1dc32918 | 4366 | e1000_write_phy_reg(hw, PHY_1000T_CTRL, |
1da177e4 LT |
4367 | phy_ctrl); |
4368 | adapter->smartspeed++; | |
1dc32918 JP |
4369 | if (!e1000_phy_setup_autoneg(hw) && |
4370 | !e1000_read_phy_reg(hw, PHY_CTRL, | |
1da177e4 LT |
4371 | &phy_ctrl)) { |
4372 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
4373 | MII_CR_RESTART_AUTO_NEG); | |
1dc32918 | 4374 | e1000_write_phy_reg(hw, PHY_CTRL, |
1da177e4 LT |
4375 | phy_ctrl); |
4376 | } | |
4377 | } | |
4378 | return; | |
96838a40 | 4379 | } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { |
1da177e4 | 4380 | /* If still no link, perhaps using 2/3 pair cable */ |
1dc32918 | 4381 | e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl); |
1da177e4 | 4382 | phy_ctrl |= CR_1000T_MS_ENABLE; |
1dc32918 JP |
4383 | e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_ctrl); |
4384 | if (!e1000_phy_setup_autoneg(hw) && | |
4385 | !e1000_read_phy_reg(hw, PHY_CTRL, &phy_ctrl)) { | |
1da177e4 LT |
4386 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | |
4387 | MII_CR_RESTART_AUTO_NEG); | |
1dc32918 | 4388 | e1000_write_phy_reg(hw, PHY_CTRL, phy_ctrl); |
1da177e4 LT |
4389 | } |
4390 | } | |
4391 | /* Restart process after E1000_SMARTSPEED_MAX iterations */ | |
96838a40 | 4392 | if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX) |
1da177e4 LT |
4393 | adapter->smartspeed = 0; |
4394 | } | |
4395 | ||
4396 | /** | |
4397 | * e1000_ioctl - | |
4398 | * @netdev: | |
4399 | * @ifreq: | |
4400 | * @cmd: | |
4401 | **/ | |
4402 | ||
64798845 | 4403 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
1da177e4 LT |
4404 | { |
4405 | switch (cmd) { | |
4406 | case SIOCGMIIPHY: | |
4407 | case SIOCGMIIREG: | |
4408 | case SIOCSMIIREG: | |
4409 | return e1000_mii_ioctl(netdev, ifr, cmd); | |
4410 | default: | |
4411 | return -EOPNOTSUPP; | |
4412 | } | |
4413 | } | |
4414 | ||
4415 | /** | |
4416 | * e1000_mii_ioctl - | |
4417 | * @netdev: | |
4418 | * @ifreq: | |
4419 | * @cmd: | |
4420 | **/ | |
4421 | ||
64798845 JP |
4422 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
4423 | int cmd) | |
1da177e4 | 4424 | { |
60490fe0 | 4425 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4426 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
4427 | struct mii_ioctl_data *data = if_mii(ifr); |
4428 | int retval; | |
406874a7 | 4429 | u16 mii_reg; |
97876fc6 | 4430 | unsigned long flags; |
1da177e4 | 4431 | |
1dc32918 | 4432 | if (hw->media_type != e1000_media_type_copper) |
1da177e4 LT |
4433 | return -EOPNOTSUPP; |
4434 | ||
4435 | switch (cmd) { | |
4436 | case SIOCGMIIPHY: | |
1dc32918 | 4437 | data->phy_id = hw->phy_addr; |
1da177e4 LT |
4438 | break; |
4439 | case SIOCGMIIREG: | |
97876fc6 | 4440 | spin_lock_irqsave(&adapter->stats_lock, flags); |
1dc32918 | 4441 | if (e1000_read_phy_reg(hw, data->reg_num & 0x1F, |
97876fc6 MC |
4442 | &data->val_out)) { |
4443 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4444 | return -EIO; |
97876fc6 MC |
4445 | } |
4446 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 LT |
4447 | break; |
4448 | case SIOCSMIIREG: | |
96838a40 | 4449 | if (data->reg_num & ~(0x1F)) |
1da177e4 LT |
4450 | return -EFAULT; |
4451 | mii_reg = data->val_in; | |
97876fc6 | 4452 | spin_lock_irqsave(&adapter->stats_lock, flags); |
1dc32918 | 4453 | if (e1000_write_phy_reg(hw, data->reg_num, |
97876fc6 MC |
4454 | mii_reg)) { |
4455 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4456 | return -EIO; |
97876fc6 | 4457 | } |
f0163ac4 | 4458 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
1dc32918 | 4459 | if (hw->media_type == e1000_media_type_copper) { |
1da177e4 LT |
4460 | switch (data->reg_num) { |
4461 | case PHY_CTRL: | |
96838a40 | 4462 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4463 | break; |
96838a40 | 4464 | if (mii_reg & MII_CR_AUTO_NEG_EN) { |
1dc32918 JP |
4465 | hw->autoneg = 1; |
4466 | hw->autoneg_advertised = 0x2F; | |
1da177e4 | 4467 | } else { |
14ad2513 | 4468 | u32 speed; |
1da177e4 | 4469 | if (mii_reg & 0x40) |
14ad2513 | 4470 | speed = SPEED_1000; |
1da177e4 | 4471 | else if (mii_reg & 0x2000) |
14ad2513 | 4472 | speed = SPEED_100; |
1da177e4 | 4473 | else |
14ad2513 DD |
4474 | speed = SPEED_10; |
4475 | retval = e1000_set_spd_dplx( | |
4476 | adapter, speed, | |
4477 | ((mii_reg & 0x100) | |
4478 | ? DUPLEX_FULL : | |
4479 | DUPLEX_HALF)); | |
f0163ac4 | 4480 | if (retval) |
1da177e4 LT |
4481 | return retval; |
4482 | } | |
2db10a08 AK |
4483 | if (netif_running(adapter->netdev)) |
4484 | e1000_reinit_locked(adapter); | |
4485 | else | |
1da177e4 LT |
4486 | e1000_reset(adapter); |
4487 | break; | |
4488 | case M88E1000_PHY_SPEC_CTRL: | |
4489 | case M88E1000_EXT_PHY_SPEC_CTRL: | |
1dc32918 | 4490 | if (e1000_phy_reset(hw)) |
1da177e4 LT |
4491 | return -EIO; |
4492 | break; | |
4493 | } | |
4494 | } else { | |
4495 | switch (data->reg_num) { | |
4496 | case PHY_CTRL: | |
96838a40 | 4497 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4498 | break; |
2db10a08 AK |
4499 | if (netif_running(adapter->netdev)) |
4500 | e1000_reinit_locked(adapter); | |
4501 | else | |
1da177e4 LT |
4502 | e1000_reset(adapter); |
4503 | break; | |
4504 | } | |
4505 | } | |
4506 | break; | |
4507 | default: | |
4508 | return -EOPNOTSUPP; | |
4509 | } | |
4510 | return E1000_SUCCESS; | |
4511 | } | |
4512 | ||
64798845 | 4513 | void e1000_pci_set_mwi(struct e1000_hw *hw) |
1da177e4 LT |
4514 | { |
4515 | struct e1000_adapter *adapter = hw->back; | |
2648345f | 4516 | int ret_val = pci_set_mwi(adapter->pdev); |
1da177e4 | 4517 | |
96838a40 | 4518 | if (ret_val) |
feb8f478 | 4519 | e_err(probe, "Error in setting MWI\n"); |
1da177e4 LT |
4520 | } |
4521 | ||
64798845 | 4522 | void e1000_pci_clear_mwi(struct e1000_hw *hw) |
1da177e4 LT |
4523 | { |
4524 | struct e1000_adapter *adapter = hw->back; | |
4525 | ||
4526 | pci_clear_mwi(adapter->pdev); | |
4527 | } | |
4528 | ||
64798845 | 4529 | int e1000_pcix_get_mmrbc(struct e1000_hw *hw) |
007755eb PO |
4530 | { |
4531 | struct e1000_adapter *adapter = hw->back; | |
4532 | return pcix_get_mmrbc(adapter->pdev); | |
4533 | } | |
4534 | ||
64798845 | 4535 | void e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc) |
007755eb PO |
4536 | { |
4537 | struct e1000_adapter *adapter = hw->back; | |
4538 | pcix_set_mmrbc(adapter->pdev, mmrbc); | |
4539 | } | |
4540 | ||
64798845 | 4541 | void e1000_io_write(struct e1000_hw *hw, unsigned long port, u32 value) |
1da177e4 LT |
4542 | { |
4543 | outl(value, port); | |
4544 | } | |
4545 | ||
5622e404 JP |
4546 | static bool e1000_vlan_used(struct e1000_adapter *adapter) |
4547 | { | |
4548 | u16 vid; | |
4549 | ||
4550 | for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) | |
4551 | return true; | |
4552 | return false; | |
4553 | } | |
4554 | ||
4555 | static void e1000_vlan_filter_on_off(struct e1000_adapter *adapter, | |
4556 | bool filter_on) | |
1da177e4 | 4557 | { |
1dc32918 | 4558 | struct e1000_hw *hw = &adapter->hw; |
5622e404 | 4559 | u32 rctl; |
1da177e4 | 4560 | |
9150b76a JB |
4561 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4562 | e1000_irq_disable(adapter); | |
1da177e4 | 4563 | |
5622e404 | 4564 | if (filter_on) { |
1532ecea JB |
4565 | /* enable VLAN receive filtering */ |
4566 | rctl = er32(RCTL); | |
4567 | rctl &= ~E1000_RCTL_CFIEN; | |
5622e404 | 4568 | if (!(adapter->netdev->flags & IFF_PROMISC)) |
1532ecea JB |
4569 | rctl |= E1000_RCTL_VFE; |
4570 | ew32(RCTL, rctl); | |
4571 | e1000_update_mng_vlan(adapter); | |
1da177e4 | 4572 | } else { |
1532ecea JB |
4573 | /* disable VLAN receive filtering */ |
4574 | rctl = er32(RCTL); | |
4575 | rctl &= ~E1000_RCTL_VFE; | |
4576 | ew32(RCTL, rctl); | |
5622e404 | 4577 | } |
fd38d7a0 | 4578 | |
5622e404 JP |
4579 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4580 | e1000_irq_enable(adapter); | |
4581 | } | |
4582 | ||
c8f44aff MM |
4583 | static void e1000_vlan_mode(struct net_device *netdev, |
4584 | netdev_features_t features) | |
5622e404 JP |
4585 | { |
4586 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4587 | struct e1000_hw *hw = &adapter->hw; | |
4588 | u32 ctrl; | |
4589 | ||
4590 | if (!test_bit(__E1000_DOWN, &adapter->flags)) | |
4591 | e1000_irq_disable(adapter); | |
4592 | ||
4593 | ctrl = er32(CTRL); | |
4594 | if (features & NETIF_F_HW_VLAN_RX) { | |
4595 | /* enable VLAN tag insert/strip */ | |
4596 | ctrl |= E1000_CTRL_VME; | |
4597 | } else { | |
4598 | /* disable VLAN tag insert/strip */ | |
4599 | ctrl &= ~E1000_CTRL_VME; | |
1da177e4 | 4600 | } |
5622e404 | 4601 | ew32(CTRL, ctrl); |
1da177e4 | 4602 | |
9150b76a JB |
4603 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4604 | e1000_irq_enable(adapter); | |
1da177e4 LT |
4605 | } |
4606 | ||
64798845 | 4607 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
1da177e4 | 4608 | { |
60490fe0 | 4609 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4610 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 4611 | u32 vfta, index; |
96838a40 | 4612 | |
1dc32918 | 4613 | if ((hw->mng_cookie.status & |
96838a40 JB |
4614 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
4615 | (vid == adapter->mng_vlan_id)) | |
2d7edb92 | 4616 | return; |
5622e404 JP |
4617 | |
4618 | if (!e1000_vlan_used(adapter)) | |
4619 | e1000_vlan_filter_on_off(adapter, true); | |
4620 | ||
1da177e4 LT |
4621 | /* add VID to filter table */ |
4622 | index = (vid >> 5) & 0x7F; | |
1dc32918 | 4623 | vfta = E1000_READ_REG_ARRAY(hw, VFTA, index); |
1da177e4 | 4624 | vfta |= (1 << (vid & 0x1F)); |
1dc32918 | 4625 | e1000_write_vfta(hw, index, vfta); |
5622e404 JP |
4626 | |
4627 | set_bit(vid, adapter->active_vlans); | |
1da177e4 LT |
4628 | } |
4629 | ||
64798845 | 4630 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
1da177e4 | 4631 | { |
60490fe0 | 4632 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4633 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 4634 | u32 vfta, index; |
1da177e4 | 4635 | |
9150b76a JB |
4636 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4637 | e1000_irq_disable(adapter); | |
9150b76a JB |
4638 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4639 | e1000_irq_enable(adapter); | |
1da177e4 LT |
4640 | |
4641 | /* remove VID from filter table */ | |
4642 | index = (vid >> 5) & 0x7F; | |
1dc32918 | 4643 | vfta = E1000_READ_REG_ARRAY(hw, VFTA, index); |
1da177e4 | 4644 | vfta &= ~(1 << (vid & 0x1F)); |
1dc32918 | 4645 | e1000_write_vfta(hw, index, vfta); |
5622e404 JP |
4646 | |
4647 | clear_bit(vid, adapter->active_vlans); | |
4648 | ||
4649 | if (!e1000_vlan_used(adapter)) | |
4650 | e1000_vlan_filter_on_off(adapter, false); | |
1da177e4 LT |
4651 | } |
4652 | ||
64798845 | 4653 | static void e1000_restore_vlan(struct e1000_adapter *adapter) |
1da177e4 | 4654 | { |
5622e404 | 4655 | u16 vid; |
1da177e4 | 4656 | |
5622e404 JP |
4657 | if (!e1000_vlan_used(adapter)) |
4658 | return; | |
4659 | ||
4660 | e1000_vlan_filter_on_off(adapter, true); | |
4661 | for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) | |
4662 | e1000_vlan_rx_add_vid(adapter->netdev, vid); | |
1da177e4 LT |
4663 | } |
4664 | ||
14ad2513 | 4665 | int e1000_set_spd_dplx(struct e1000_adapter *adapter, u32 spd, u8 dplx) |
1da177e4 | 4666 | { |
1dc32918 JP |
4667 | struct e1000_hw *hw = &adapter->hw; |
4668 | ||
4669 | hw->autoneg = 0; | |
1da177e4 | 4670 | |
14ad2513 DD |
4671 | /* Make sure dplx is at most 1 bit and lsb of speed is not set |
4672 | * for the switch() below to work */ | |
4673 | if ((spd & 1) || (dplx & ~1)) | |
4674 | goto err_inval; | |
4675 | ||
6921368f | 4676 | /* Fiber NICs only allow 1000 gbps Full duplex */ |
1dc32918 | 4677 | if ((hw->media_type == e1000_media_type_fiber) && |
14ad2513 DD |
4678 | spd != SPEED_1000 && |
4679 | dplx != DUPLEX_FULL) | |
4680 | goto err_inval; | |
6921368f | 4681 | |
14ad2513 | 4682 | switch (spd + dplx) { |
1da177e4 | 4683 | case SPEED_10 + DUPLEX_HALF: |
1dc32918 | 4684 | hw->forced_speed_duplex = e1000_10_half; |
1da177e4 LT |
4685 | break; |
4686 | case SPEED_10 + DUPLEX_FULL: | |
1dc32918 | 4687 | hw->forced_speed_duplex = e1000_10_full; |
1da177e4 LT |
4688 | break; |
4689 | case SPEED_100 + DUPLEX_HALF: | |
1dc32918 | 4690 | hw->forced_speed_duplex = e1000_100_half; |
1da177e4 LT |
4691 | break; |
4692 | case SPEED_100 + DUPLEX_FULL: | |
1dc32918 | 4693 | hw->forced_speed_duplex = e1000_100_full; |
1da177e4 LT |
4694 | break; |
4695 | case SPEED_1000 + DUPLEX_FULL: | |
1dc32918 JP |
4696 | hw->autoneg = 1; |
4697 | hw->autoneg_advertised = ADVERTISE_1000_FULL; | |
1da177e4 LT |
4698 | break; |
4699 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ | |
4700 | default: | |
14ad2513 | 4701 | goto err_inval; |
1da177e4 LT |
4702 | } |
4703 | return 0; | |
14ad2513 DD |
4704 | |
4705 | err_inval: | |
4706 | e_err(probe, "Unsupported Speed/Duplex configuration\n"); | |
4707 | return -EINVAL; | |
1da177e4 LT |
4708 | } |
4709 | ||
b43fcd7d | 4710 | static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake) |
1da177e4 LT |
4711 | { |
4712 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 4713 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4714 | struct e1000_hw *hw = &adapter->hw; |
406874a7 JP |
4715 | u32 ctrl, ctrl_ext, rctl, status; |
4716 | u32 wufc = adapter->wol; | |
6fdfef16 | 4717 | #ifdef CONFIG_PM |
240b1710 | 4718 | int retval = 0; |
6fdfef16 | 4719 | #endif |
1da177e4 LT |
4720 | |
4721 | netif_device_detach(netdev); | |
4722 | ||
0ef4eedc JB |
4723 | mutex_lock(&adapter->mutex); |
4724 | ||
2db10a08 AK |
4725 | if (netif_running(netdev)) { |
4726 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); | |
1da177e4 | 4727 | e1000_down(adapter); |
2db10a08 | 4728 | } |
1da177e4 | 4729 | |
2f82665f | 4730 | #ifdef CONFIG_PM |
1d33e9c6 | 4731 | retval = pci_save_state(pdev); |
0ef4eedc JB |
4732 | if (retval) { |
4733 | mutex_unlock(&adapter->mutex); | |
2f82665f | 4734 | return retval; |
0ef4eedc | 4735 | } |
2f82665f JB |
4736 | #endif |
4737 | ||
1dc32918 | 4738 | status = er32(STATUS); |
96838a40 | 4739 | if (status & E1000_STATUS_LU) |
1da177e4 LT |
4740 | wufc &= ~E1000_WUFC_LNKC; |
4741 | ||
96838a40 | 4742 | if (wufc) { |
1da177e4 | 4743 | e1000_setup_rctl(adapter); |
db0ce50d | 4744 | e1000_set_rx_mode(netdev); |
1da177e4 LT |
4745 | |
4746 | /* turn on all-multi mode if wake on multicast is enabled */ | |
120cd576 | 4747 | if (wufc & E1000_WUFC_MC) { |
1dc32918 | 4748 | rctl = er32(RCTL); |
1da177e4 | 4749 | rctl |= E1000_RCTL_MPE; |
1dc32918 | 4750 | ew32(RCTL, rctl); |
1da177e4 LT |
4751 | } |
4752 | ||
1dc32918 JP |
4753 | if (hw->mac_type >= e1000_82540) { |
4754 | ctrl = er32(CTRL); | |
1da177e4 LT |
4755 | /* advertise wake from D3Cold */ |
4756 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
4757 | /* phy power management enable */ | |
4758 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
4759 | ctrl |= E1000_CTRL_ADVD3WUC | | |
4760 | E1000_CTRL_EN_PHY_PWR_MGMT; | |
1dc32918 | 4761 | ew32(CTRL, ctrl); |
1da177e4 LT |
4762 | } |
4763 | ||
1dc32918 | 4764 | if (hw->media_type == e1000_media_type_fiber || |
1532ecea | 4765 | hw->media_type == e1000_media_type_internal_serdes) { |
1da177e4 | 4766 | /* keep the laser running in D3 */ |
1dc32918 | 4767 | ctrl_ext = er32(CTRL_EXT); |
1da177e4 | 4768 | ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; |
1dc32918 | 4769 | ew32(CTRL_EXT, ctrl_ext); |
1da177e4 LT |
4770 | } |
4771 | ||
1dc32918 JP |
4772 | ew32(WUC, E1000_WUC_PME_EN); |
4773 | ew32(WUFC, wufc); | |
1da177e4 | 4774 | } else { |
1dc32918 JP |
4775 | ew32(WUC, 0); |
4776 | ew32(WUFC, 0); | |
1da177e4 LT |
4777 | } |
4778 | ||
0fccd0e9 JG |
4779 | e1000_release_manageability(adapter); |
4780 | ||
b43fcd7d RW |
4781 | *enable_wake = !!wufc; |
4782 | ||
0fccd0e9 | 4783 | /* make sure adapter isn't asleep if manageability is enabled */ |
b43fcd7d RW |
4784 | if (adapter->en_mng_pt) |
4785 | *enable_wake = true; | |
1da177e4 | 4786 | |
edd106fc AK |
4787 | if (netif_running(netdev)) |
4788 | e1000_free_irq(adapter); | |
4789 | ||
0ef4eedc JB |
4790 | mutex_unlock(&adapter->mutex); |
4791 | ||
1da177e4 | 4792 | pci_disable_device(pdev); |
240b1710 | 4793 | |
1da177e4 LT |
4794 | return 0; |
4795 | } | |
4796 | ||
2f82665f | 4797 | #ifdef CONFIG_PM |
b43fcd7d RW |
4798 | static int e1000_suspend(struct pci_dev *pdev, pm_message_t state) |
4799 | { | |
4800 | int retval; | |
4801 | bool wake; | |
4802 | ||
4803 | retval = __e1000_shutdown(pdev, &wake); | |
4804 | if (retval) | |
4805 | return retval; | |
4806 | ||
4807 | if (wake) { | |
4808 | pci_prepare_to_sleep(pdev); | |
4809 | } else { | |
4810 | pci_wake_from_d3(pdev, false); | |
4811 | pci_set_power_state(pdev, PCI_D3hot); | |
4812 | } | |
4813 | ||
4814 | return 0; | |
4815 | } | |
4816 | ||
64798845 | 4817 | static int e1000_resume(struct pci_dev *pdev) |
1da177e4 LT |
4818 | { |
4819 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 4820 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4821 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 4822 | u32 err; |
1da177e4 | 4823 | |
d0e027db | 4824 | pci_set_power_state(pdev, PCI_D0); |
1d33e9c6 | 4825 | pci_restore_state(pdev); |
dbb5aaeb | 4826 | pci_save_state(pdev); |
81250297 TI |
4827 | |
4828 | if (adapter->need_ioport) | |
4829 | err = pci_enable_device(pdev); | |
4830 | else | |
4831 | err = pci_enable_device_mem(pdev); | |
c7be73bc | 4832 | if (err) { |
675ad473 | 4833 | pr_err("Cannot enable PCI device from suspend\n"); |
3d1dd8cb AK |
4834 | return err; |
4835 | } | |
a4cb847d | 4836 | pci_set_master(pdev); |
1da177e4 | 4837 | |
d0e027db AK |
4838 | pci_enable_wake(pdev, PCI_D3hot, 0); |
4839 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
1da177e4 | 4840 | |
c7be73bc JP |
4841 | if (netif_running(netdev)) { |
4842 | err = e1000_request_irq(adapter); | |
4843 | if (err) | |
4844 | return err; | |
4845 | } | |
edd106fc AK |
4846 | |
4847 | e1000_power_up_phy(adapter); | |
1da177e4 | 4848 | e1000_reset(adapter); |
1dc32918 | 4849 | ew32(WUS, ~0); |
1da177e4 | 4850 | |
0fccd0e9 JG |
4851 | e1000_init_manageability(adapter); |
4852 | ||
96838a40 | 4853 | if (netif_running(netdev)) |
1da177e4 LT |
4854 | e1000_up(adapter); |
4855 | ||
4856 | netif_device_attach(netdev); | |
4857 | ||
1da177e4 LT |
4858 | return 0; |
4859 | } | |
4860 | #endif | |
c653e635 AK |
4861 | |
4862 | static void e1000_shutdown(struct pci_dev *pdev) | |
4863 | { | |
b43fcd7d RW |
4864 | bool wake; |
4865 | ||
4866 | __e1000_shutdown(pdev, &wake); | |
4867 | ||
4868 | if (system_state == SYSTEM_POWER_OFF) { | |
4869 | pci_wake_from_d3(pdev, wake); | |
4870 | pci_set_power_state(pdev, PCI_D3hot); | |
4871 | } | |
c653e635 AK |
4872 | } |
4873 | ||
1da177e4 LT |
4874 | #ifdef CONFIG_NET_POLL_CONTROLLER |
4875 | /* | |
4876 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
4877 | * without having to re-enable interrupts. It's not called while | |
4878 | * the interrupt routine is executing. | |
4879 | */ | |
64798845 | 4880 | static void e1000_netpoll(struct net_device *netdev) |
1da177e4 | 4881 | { |
60490fe0 | 4882 | struct e1000_adapter *adapter = netdev_priv(netdev); |
d3d9e484 | 4883 | |
1da177e4 | 4884 | disable_irq(adapter->pdev->irq); |
7d12e780 | 4885 | e1000_intr(adapter->pdev->irq, netdev); |
1da177e4 LT |
4886 | enable_irq(adapter->pdev->irq); |
4887 | } | |
4888 | #endif | |
4889 | ||
9026729b AK |
4890 | /** |
4891 | * e1000_io_error_detected - called when PCI error is detected | |
4892 | * @pdev: Pointer to PCI device | |
120a5d0d | 4893 | * @state: The current pci connection state |
9026729b AK |
4894 | * |
4895 | * This function is called after a PCI bus error affecting | |
4896 | * this device has been detected. | |
4897 | */ | |
64798845 JP |
4898 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
4899 | pci_channel_state_t state) | |
9026729b AK |
4900 | { |
4901 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4cf1653a | 4902 | struct e1000_adapter *adapter = netdev_priv(netdev); |
9026729b AK |
4903 | |
4904 | netif_device_detach(netdev); | |
4905 | ||
eab63302 AD |
4906 | if (state == pci_channel_io_perm_failure) |
4907 | return PCI_ERS_RESULT_DISCONNECT; | |
4908 | ||
9026729b AK |
4909 | if (netif_running(netdev)) |
4910 | e1000_down(adapter); | |
72e8d6bb | 4911 | pci_disable_device(pdev); |
9026729b AK |
4912 | |
4913 | /* Request a slot slot reset. */ | |
4914 | return PCI_ERS_RESULT_NEED_RESET; | |
4915 | } | |
4916 | ||
4917 | /** | |
4918 | * e1000_io_slot_reset - called after the pci bus has been reset. | |
4919 | * @pdev: Pointer to PCI device | |
4920 | * | |
4921 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
4922 | * resembles the first-half of the e1000_resume routine. | |
4923 | */ | |
4924 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) | |
4925 | { | |
4926 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4cf1653a | 4927 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4928 | struct e1000_hw *hw = &adapter->hw; |
81250297 | 4929 | int err; |
9026729b | 4930 | |
81250297 TI |
4931 | if (adapter->need_ioport) |
4932 | err = pci_enable_device(pdev); | |
4933 | else | |
4934 | err = pci_enable_device_mem(pdev); | |
4935 | if (err) { | |
675ad473 | 4936 | pr_err("Cannot re-enable PCI device after reset.\n"); |
9026729b AK |
4937 | return PCI_ERS_RESULT_DISCONNECT; |
4938 | } | |
4939 | pci_set_master(pdev); | |
4940 | ||
dbf38c94 LV |
4941 | pci_enable_wake(pdev, PCI_D3hot, 0); |
4942 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
9026729b | 4943 | |
9026729b | 4944 | e1000_reset(adapter); |
1dc32918 | 4945 | ew32(WUS, ~0); |
9026729b AK |
4946 | |
4947 | return PCI_ERS_RESULT_RECOVERED; | |
4948 | } | |
4949 | ||
4950 | /** | |
4951 | * e1000_io_resume - called when traffic can start flowing again. | |
4952 | * @pdev: Pointer to PCI device | |
4953 | * | |
4954 | * This callback is called when the error recovery driver tells us that | |
4955 | * its OK to resume normal operation. Implementation resembles the | |
4956 | * second-half of the e1000_resume routine. | |
4957 | */ | |
4958 | static void e1000_io_resume(struct pci_dev *pdev) | |
4959 | { | |
4960 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4cf1653a | 4961 | struct e1000_adapter *adapter = netdev_priv(netdev); |
0fccd0e9 JG |
4962 | |
4963 | e1000_init_manageability(adapter); | |
9026729b AK |
4964 | |
4965 | if (netif_running(netdev)) { | |
4966 | if (e1000_up(adapter)) { | |
675ad473 | 4967 | pr_info("can't bring device back up after reset\n"); |
9026729b AK |
4968 | return; |
4969 | } | |
4970 | } | |
4971 | ||
4972 | netif_device_attach(netdev); | |
9026729b AK |
4973 | } |
4974 | ||
1da177e4 | 4975 | /* e1000_main.c */ |