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Commit | Line | Data |
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1da177e4 LT |
1 | /******************************************************************************* |
2 | ||
0abb6eb1 AK |
3 | Intel PRO/1000 Linux driver |
4 | Copyright(c) 1999 - 2006 Intel Corporation. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify it | |
7 | under the terms and conditions of the GNU General Public License, | |
8 | version 2, as published by the Free Software Foundation. | |
9 | ||
10 | This program is distributed in the hope it will be useful, but WITHOUT | |
11 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
1da177e4 | 13 | more details. |
0abb6eb1 | 14 | |
1da177e4 | 15 | You should have received a copy of the GNU General Public License along with |
0abb6eb1 AK |
16 | this program; if not, write to the Free Software Foundation, Inc., |
17 | 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | ||
19 | The full GNU General Public License is included in this distribution in | |
20 | the file called "COPYING". | |
21 | ||
1da177e4 LT |
22 | Contact Information: |
23 | Linux NICS <linux.nics@intel.com> | |
3d41e30a | 24 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
1da177e4 LT |
25 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
26 | ||
27 | *******************************************************************************/ | |
28 | ||
29 | #include "e1000.h" | |
d0bb53e1 | 30 | #include <net/ip6_checksum.h> |
1da177e4 | 31 | |
1da177e4 | 32 | char e1000_driver_name[] = "e1000"; |
3ad2cc67 | 33 | static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver"; |
1532ecea | 34 | #define DRV_VERSION "7.3.21-k5-NAPI" |
abec42a4 SH |
35 | const char e1000_driver_version[] = DRV_VERSION; |
36 | static const char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation."; | |
1da177e4 LT |
37 | |
38 | /* e1000_pci_tbl - PCI Device ID Table | |
39 | * | |
40 | * Last entry must be all 0s | |
41 | * | |
42 | * Macro expands to... | |
43 | * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)} | |
44 | */ | |
45 | static struct pci_device_id e1000_pci_tbl[] = { | |
46 | INTEL_E1000_ETHERNET_DEVICE(0x1000), | |
47 | INTEL_E1000_ETHERNET_DEVICE(0x1001), | |
48 | INTEL_E1000_ETHERNET_DEVICE(0x1004), | |
49 | INTEL_E1000_ETHERNET_DEVICE(0x1008), | |
50 | INTEL_E1000_ETHERNET_DEVICE(0x1009), | |
51 | INTEL_E1000_ETHERNET_DEVICE(0x100C), | |
52 | INTEL_E1000_ETHERNET_DEVICE(0x100D), | |
53 | INTEL_E1000_ETHERNET_DEVICE(0x100E), | |
54 | INTEL_E1000_ETHERNET_DEVICE(0x100F), | |
55 | INTEL_E1000_ETHERNET_DEVICE(0x1010), | |
56 | INTEL_E1000_ETHERNET_DEVICE(0x1011), | |
57 | INTEL_E1000_ETHERNET_DEVICE(0x1012), | |
58 | INTEL_E1000_ETHERNET_DEVICE(0x1013), | |
59 | INTEL_E1000_ETHERNET_DEVICE(0x1014), | |
60 | INTEL_E1000_ETHERNET_DEVICE(0x1015), | |
61 | INTEL_E1000_ETHERNET_DEVICE(0x1016), | |
62 | INTEL_E1000_ETHERNET_DEVICE(0x1017), | |
63 | INTEL_E1000_ETHERNET_DEVICE(0x1018), | |
64 | INTEL_E1000_ETHERNET_DEVICE(0x1019), | |
2648345f | 65 | INTEL_E1000_ETHERNET_DEVICE(0x101A), |
1da177e4 LT |
66 | INTEL_E1000_ETHERNET_DEVICE(0x101D), |
67 | INTEL_E1000_ETHERNET_DEVICE(0x101E), | |
68 | INTEL_E1000_ETHERNET_DEVICE(0x1026), | |
69 | INTEL_E1000_ETHERNET_DEVICE(0x1027), | |
70 | INTEL_E1000_ETHERNET_DEVICE(0x1028), | |
71 | INTEL_E1000_ETHERNET_DEVICE(0x1075), | |
72 | INTEL_E1000_ETHERNET_DEVICE(0x1076), | |
73 | INTEL_E1000_ETHERNET_DEVICE(0x1077), | |
74 | INTEL_E1000_ETHERNET_DEVICE(0x1078), | |
75 | INTEL_E1000_ETHERNET_DEVICE(0x1079), | |
76 | INTEL_E1000_ETHERNET_DEVICE(0x107A), | |
77 | INTEL_E1000_ETHERNET_DEVICE(0x107B), | |
78 | INTEL_E1000_ETHERNET_DEVICE(0x107C), | |
79 | INTEL_E1000_ETHERNET_DEVICE(0x108A), | |
b7ee49db | 80 | INTEL_E1000_ETHERNET_DEVICE(0x1099), |
b7ee49db | 81 | INTEL_E1000_ETHERNET_DEVICE(0x10B5), |
1da177e4 LT |
82 | /* required last entry */ |
83 | {0,} | |
84 | }; | |
85 | ||
86 | MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); | |
87 | ||
35574764 NN |
88 | int e1000_up(struct e1000_adapter *adapter); |
89 | void e1000_down(struct e1000_adapter *adapter); | |
90 | void e1000_reinit_locked(struct e1000_adapter *adapter); | |
91 | void e1000_reset(struct e1000_adapter *adapter); | |
406874a7 | 92 | int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx); |
35574764 NN |
93 | int e1000_setup_all_tx_resources(struct e1000_adapter *adapter); |
94 | int e1000_setup_all_rx_resources(struct e1000_adapter *adapter); | |
95 | void e1000_free_all_tx_resources(struct e1000_adapter *adapter); | |
96 | void e1000_free_all_rx_resources(struct e1000_adapter *adapter); | |
3ad2cc67 | 97 | static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
35574764 | 98 | struct e1000_tx_ring *txdr); |
3ad2cc67 | 99 | static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
35574764 | 100 | struct e1000_rx_ring *rxdr); |
3ad2cc67 | 101 | static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
35574764 | 102 | struct e1000_tx_ring *tx_ring); |
3ad2cc67 | 103 | static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
35574764 NN |
104 | struct e1000_rx_ring *rx_ring); |
105 | void e1000_update_stats(struct e1000_adapter *adapter); | |
1da177e4 LT |
106 | |
107 | static int e1000_init_module(void); | |
108 | static void e1000_exit_module(void); | |
109 | static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent); | |
110 | static void __devexit e1000_remove(struct pci_dev *pdev); | |
581d708e | 111 | static int e1000_alloc_queues(struct e1000_adapter *adapter); |
1da177e4 LT |
112 | static int e1000_sw_init(struct e1000_adapter *adapter); |
113 | static int e1000_open(struct net_device *netdev); | |
114 | static int e1000_close(struct net_device *netdev); | |
115 | static void e1000_configure_tx(struct e1000_adapter *adapter); | |
116 | static void e1000_configure_rx(struct e1000_adapter *adapter); | |
117 | static void e1000_setup_rctl(struct e1000_adapter *adapter); | |
581d708e MC |
118 | static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter); |
119 | static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter); | |
120 | static void e1000_clean_tx_ring(struct e1000_adapter *adapter, | |
121 | struct e1000_tx_ring *tx_ring); | |
122 | static void e1000_clean_rx_ring(struct e1000_adapter *adapter, | |
123 | struct e1000_rx_ring *rx_ring); | |
db0ce50d | 124 | static void e1000_set_rx_mode(struct net_device *netdev); |
1da177e4 LT |
125 | static void e1000_update_phy_info(unsigned long data); |
126 | static void e1000_watchdog(unsigned long data); | |
1da177e4 | 127 | static void e1000_82547_tx_fifo_stall(unsigned long data); |
3b29a56d SH |
128 | static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
129 | struct net_device *netdev); | |
1da177e4 LT |
130 | static struct net_device_stats * e1000_get_stats(struct net_device *netdev); |
131 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu); | |
132 | static int e1000_set_mac(struct net_device *netdev, void *p); | |
7d12e780 | 133 | static irqreturn_t e1000_intr(int irq, void *data); |
c3033b01 JP |
134 | static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
135 | struct e1000_tx_ring *tx_ring); | |
bea3348e | 136 | static int e1000_clean(struct napi_struct *napi, int budget); |
c3033b01 JP |
137 | static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
138 | struct e1000_rx_ring *rx_ring, | |
139 | int *work_done, int work_to_do); | |
edbbb3ca JB |
140 | static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, |
141 | struct e1000_rx_ring *rx_ring, | |
142 | int *work_done, int work_to_do); | |
581d708e | 143 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
edbbb3ca | 144 | struct e1000_rx_ring *rx_ring, |
72d64a43 | 145 | int cleaned_count); |
edbbb3ca JB |
146 | static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, |
147 | struct e1000_rx_ring *rx_ring, | |
148 | int cleaned_count); | |
1da177e4 LT |
149 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); |
150 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
151 | int cmd); | |
1da177e4 LT |
152 | static void e1000_enter_82542_rst(struct e1000_adapter *adapter); |
153 | static void e1000_leave_82542_rst(struct e1000_adapter *adapter); | |
154 | static void e1000_tx_timeout(struct net_device *dev); | |
65f27f38 | 155 | static void e1000_reset_task(struct work_struct *work); |
1da177e4 | 156 | static void e1000_smartspeed(struct e1000_adapter *adapter); |
e619d523 AK |
157 | static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
158 | struct sk_buff *skb); | |
1da177e4 LT |
159 | |
160 | static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp); | |
406874a7 JP |
161 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid); |
162 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid); | |
1da177e4 LT |
163 | static void e1000_restore_vlan(struct e1000_adapter *adapter); |
164 | ||
6fdfef16 | 165 | #ifdef CONFIG_PM |
b43fcd7d | 166 | static int e1000_suspend(struct pci_dev *pdev, pm_message_t state); |
1da177e4 LT |
167 | static int e1000_resume(struct pci_dev *pdev); |
168 | #endif | |
c653e635 | 169 | static void e1000_shutdown(struct pci_dev *pdev); |
1da177e4 LT |
170 | |
171 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
172 | /* for netdump / net console */ | |
173 | static void e1000_netpoll (struct net_device *netdev); | |
174 | #endif | |
175 | ||
1f753861 JB |
176 | #define COPYBREAK_DEFAULT 256 |
177 | static unsigned int copybreak __read_mostly = COPYBREAK_DEFAULT; | |
178 | module_param(copybreak, uint, 0644); | |
179 | MODULE_PARM_DESC(copybreak, | |
180 | "Maximum size of packet that is copied to a new buffer on receive"); | |
181 | ||
9026729b AK |
182 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
183 | pci_channel_state_t state); | |
184 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev); | |
185 | static void e1000_io_resume(struct pci_dev *pdev); | |
186 | ||
187 | static struct pci_error_handlers e1000_err_handler = { | |
188 | .error_detected = e1000_io_error_detected, | |
189 | .slot_reset = e1000_io_slot_reset, | |
190 | .resume = e1000_io_resume, | |
191 | }; | |
24025e4e | 192 | |
1da177e4 LT |
193 | static struct pci_driver e1000_driver = { |
194 | .name = e1000_driver_name, | |
195 | .id_table = e1000_pci_tbl, | |
196 | .probe = e1000_probe, | |
197 | .remove = __devexit_p(e1000_remove), | |
c4e24f01 | 198 | #ifdef CONFIG_PM |
1da177e4 | 199 | /* Power Managment Hooks */ |
1da177e4 | 200 | .suspend = e1000_suspend, |
c653e635 | 201 | .resume = e1000_resume, |
1da177e4 | 202 | #endif |
9026729b AK |
203 | .shutdown = e1000_shutdown, |
204 | .err_handler = &e1000_err_handler | |
1da177e4 LT |
205 | }; |
206 | ||
207 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
208 | MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); | |
209 | MODULE_LICENSE("GPL"); | |
210 | MODULE_VERSION(DRV_VERSION); | |
211 | ||
212 | static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; | |
213 | module_param(debug, int, 0); | |
214 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
215 | ||
216 | /** | |
217 | * e1000_init_module - Driver Registration Routine | |
218 | * | |
219 | * e1000_init_module is the first routine called when the driver is | |
220 | * loaded. All it does is register with the PCI subsystem. | |
221 | **/ | |
222 | ||
64798845 | 223 | static int __init e1000_init_module(void) |
1da177e4 LT |
224 | { |
225 | int ret; | |
226 | printk(KERN_INFO "%s - version %s\n", | |
227 | e1000_driver_string, e1000_driver_version); | |
228 | ||
229 | printk(KERN_INFO "%s\n", e1000_copyright); | |
230 | ||
29917620 | 231 | ret = pci_register_driver(&e1000_driver); |
1f753861 JB |
232 | if (copybreak != COPYBREAK_DEFAULT) { |
233 | if (copybreak == 0) | |
234 | printk(KERN_INFO "e1000: copybreak disabled\n"); | |
235 | else | |
236 | printk(KERN_INFO "e1000: copybreak enabled for " | |
237 | "packets <= %u bytes\n", copybreak); | |
238 | } | |
1da177e4 LT |
239 | return ret; |
240 | } | |
241 | ||
242 | module_init(e1000_init_module); | |
243 | ||
244 | /** | |
245 | * e1000_exit_module - Driver Exit Cleanup Routine | |
246 | * | |
247 | * e1000_exit_module is called just before the driver is removed | |
248 | * from memory. | |
249 | **/ | |
250 | ||
64798845 | 251 | static void __exit e1000_exit_module(void) |
1da177e4 | 252 | { |
1da177e4 LT |
253 | pci_unregister_driver(&e1000_driver); |
254 | } | |
255 | ||
256 | module_exit(e1000_exit_module); | |
257 | ||
2db10a08 AK |
258 | static int e1000_request_irq(struct e1000_adapter *adapter) |
259 | { | |
260 | struct net_device *netdev = adapter->netdev; | |
3e18826c | 261 | irq_handler_t handler = e1000_intr; |
e94bd23f AK |
262 | int irq_flags = IRQF_SHARED; |
263 | int err; | |
2db10a08 | 264 | |
e94bd23f AK |
265 | err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name, |
266 | netdev); | |
267 | if (err) { | |
2db10a08 AK |
268 | DPRINTK(PROBE, ERR, |
269 | "Unable to allocate interrupt Error: %d\n", err); | |
e94bd23f | 270 | } |
2db10a08 AK |
271 | |
272 | return err; | |
273 | } | |
274 | ||
275 | static void e1000_free_irq(struct e1000_adapter *adapter) | |
276 | { | |
277 | struct net_device *netdev = adapter->netdev; | |
278 | ||
279 | free_irq(adapter->pdev->irq, netdev); | |
2db10a08 AK |
280 | } |
281 | ||
1da177e4 LT |
282 | /** |
283 | * e1000_irq_disable - Mask off interrupt generation on the NIC | |
284 | * @adapter: board private structure | |
285 | **/ | |
286 | ||
64798845 | 287 | static void e1000_irq_disable(struct e1000_adapter *adapter) |
1da177e4 | 288 | { |
1dc32918 JP |
289 | struct e1000_hw *hw = &adapter->hw; |
290 | ||
291 | ew32(IMC, ~0); | |
292 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
293 | synchronize_irq(adapter->pdev->irq); |
294 | } | |
295 | ||
296 | /** | |
297 | * e1000_irq_enable - Enable default interrupt generation settings | |
298 | * @adapter: board private structure | |
299 | **/ | |
300 | ||
64798845 | 301 | static void e1000_irq_enable(struct e1000_adapter *adapter) |
1da177e4 | 302 | { |
1dc32918 JP |
303 | struct e1000_hw *hw = &adapter->hw; |
304 | ||
305 | ew32(IMS, IMS_ENABLE_MASK); | |
306 | E1000_WRITE_FLUSH(); | |
1da177e4 | 307 | } |
3ad2cc67 | 308 | |
64798845 | 309 | static void e1000_update_mng_vlan(struct e1000_adapter *adapter) |
2d7edb92 | 310 | { |
1dc32918 | 311 | struct e1000_hw *hw = &adapter->hw; |
2d7edb92 | 312 | struct net_device *netdev = adapter->netdev; |
1dc32918 | 313 | u16 vid = hw->mng_cookie.vlan_id; |
406874a7 | 314 | u16 old_vid = adapter->mng_vlan_id; |
96838a40 | 315 | if (adapter->vlgrp) { |
5c15bdec | 316 | if (!vlan_group_get_device(adapter->vlgrp, vid)) { |
1dc32918 | 317 | if (hw->mng_cookie.status & |
2d7edb92 MC |
318 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) { |
319 | e1000_vlan_rx_add_vid(netdev, vid); | |
320 | adapter->mng_vlan_id = vid; | |
321 | } else | |
322 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
96838a40 | 323 | |
406874a7 | 324 | if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && |
96838a40 | 325 | (vid != old_vid) && |
5c15bdec | 326 | !vlan_group_get_device(adapter->vlgrp, old_vid)) |
2d7edb92 | 327 | e1000_vlan_rx_kill_vid(netdev, old_vid); |
c5f226fe JK |
328 | } else |
329 | adapter->mng_vlan_id = vid; | |
2d7edb92 MC |
330 | } |
331 | } | |
b55ccb35 | 332 | |
64798845 | 333 | static void e1000_init_manageability(struct e1000_adapter *adapter) |
0fccd0e9 | 334 | { |
1dc32918 JP |
335 | struct e1000_hw *hw = &adapter->hw; |
336 | ||
0fccd0e9 | 337 | if (adapter->en_mng_pt) { |
1dc32918 | 338 | u32 manc = er32(MANC); |
0fccd0e9 JG |
339 | |
340 | /* disable hardware interception of ARP */ | |
341 | manc &= ~(E1000_MANC_ARP_EN); | |
342 | ||
1dc32918 | 343 | ew32(MANC, manc); |
0fccd0e9 JG |
344 | } |
345 | } | |
346 | ||
64798845 | 347 | static void e1000_release_manageability(struct e1000_adapter *adapter) |
0fccd0e9 | 348 | { |
1dc32918 JP |
349 | struct e1000_hw *hw = &adapter->hw; |
350 | ||
0fccd0e9 | 351 | if (adapter->en_mng_pt) { |
1dc32918 | 352 | u32 manc = er32(MANC); |
0fccd0e9 JG |
353 | |
354 | /* re-enable hardware interception of ARP */ | |
355 | manc |= E1000_MANC_ARP_EN; | |
356 | ||
1dc32918 | 357 | ew32(MANC, manc); |
0fccd0e9 JG |
358 | } |
359 | } | |
360 | ||
e0aac5a2 AK |
361 | /** |
362 | * e1000_configure - configure the hardware for RX and TX | |
363 | * @adapter = private board structure | |
364 | **/ | |
365 | static void e1000_configure(struct e1000_adapter *adapter) | |
1da177e4 LT |
366 | { |
367 | struct net_device *netdev = adapter->netdev; | |
2db10a08 | 368 | int i; |
1da177e4 | 369 | |
db0ce50d | 370 | e1000_set_rx_mode(netdev); |
1da177e4 LT |
371 | |
372 | e1000_restore_vlan(adapter); | |
0fccd0e9 | 373 | e1000_init_manageability(adapter); |
1da177e4 LT |
374 | |
375 | e1000_configure_tx(adapter); | |
376 | e1000_setup_rctl(adapter); | |
377 | e1000_configure_rx(adapter); | |
72d64a43 JK |
378 | /* call E1000_DESC_UNUSED which always leaves |
379 | * at least 1 descriptor unused to make sure | |
380 | * next_to_use != next_to_clean */ | |
f56799ea | 381 | for (i = 0; i < adapter->num_rx_queues; i++) { |
72d64a43 | 382 | struct e1000_rx_ring *ring = &adapter->rx_ring[i]; |
a292ca6e JK |
383 | adapter->alloc_rx_buf(adapter, ring, |
384 | E1000_DESC_UNUSED(ring)); | |
f56799ea | 385 | } |
1da177e4 | 386 | |
7bfa4816 | 387 | adapter->tx_queue_len = netdev->tx_queue_len; |
e0aac5a2 AK |
388 | } |
389 | ||
390 | int e1000_up(struct e1000_adapter *adapter) | |
391 | { | |
1dc32918 JP |
392 | struct e1000_hw *hw = &adapter->hw; |
393 | ||
e0aac5a2 AK |
394 | /* hardware has been reset, we need to reload some things */ |
395 | e1000_configure(adapter); | |
396 | ||
397 | clear_bit(__E1000_DOWN, &adapter->flags); | |
7bfa4816 | 398 | |
bea3348e | 399 | napi_enable(&adapter->napi); |
c3570acb | 400 | |
5de55624 MC |
401 | e1000_irq_enable(adapter); |
402 | ||
4cb9be7a JB |
403 | netif_wake_queue(adapter->netdev); |
404 | ||
79f3d399 | 405 | /* fire a link change interrupt to start the watchdog */ |
1dc32918 | 406 | ew32(ICS, E1000_ICS_LSC); |
1da177e4 LT |
407 | return 0; |
408 | } | |
409 | ||
79f05bf0 AK |
410 | /** |
411 | * e1000_power_up_phy - restore link in case the phy was powered down | |
412 | * @adapter: address of board private structure | |
413 | * | |
414 | * The phy may be powered down to save power and turn off link when the | |
415 | * driver is unloaded and wake on lan is not enabled (among others) | |
416 | * *** this routine MUST be followed by a call to e1000_reset *** | |
417 | * | |
418 | **/ | |
419 | ||
d658266e | 420 | void e1000_power_up_phy(struct e1000_adapter *adapter) |
79f05bf0 | 421 | { |
1dc32918 | 422 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 423 | u16 mii_reg = 0; |
79f05bf0 AK |
424 | |
425 | /* Just clear the power down bit to wake the phy back up */ | |
1dc32918 | 426 | if (hw->media_type == e1000_media_type_copper) { |
79f05bf0 AK |
427 | /* according to the manual, the phy will retain its |
428 | * settings across a power-down/up cycle */ | |
1dc32918 | 429 | e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); |
79f05bf0 | 430 | mii_reg &= ~MII_CR_POWER_DOWN; |
1dc32918 | 431 | e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); |
79f05bf0 AK |
432 | } |
433 | } | |
434 | ||
435 | static void e1000_power_down_phy(struct e1000_adapter *adapter) | |
436 | { | |
1dc32918 JP |
437 | struct e1000_hw *hw = &adapter->hw; |
438 | ||
61c2505f | 439 | /* Power down the PHY so no link is implied when interface is down * |
c3033b01 | 440 | * The PHY cannot be powered down if any of the following is true * |
79f05bf0 AK |
441 | * (a) WoL is enabled |
442 | * (b) AMT is active | |
443 | * (c) SoL/IDER session is active */ | |
1dc32918 JP |
444 | if (!adapter->wol && hw->mac_type >= e1000_82540 && |
445 | hw->media_type == e1000_media_type_copper) { | |
406874a7 | 446 | u16 mii_reg = 0; |
61c2505f | 447 | |
1dc32918 | 448 | switch (hw->mac_type) { |
61c2505f BA |
449 | case e1000_82540: |
450 | case e1000_82545: | |
451 | case e1000_82545_rev_3: | |
452 | case e1000_82546: | |
453 | case e1000_82546_rev_3: | |
454 | case e1000_82541: | |
455 | case e1000_82541_rev_2: | |
456 | case e1000_82547: | |
457 | case e1000_82547_rev_2: | |
1dc32918 | 458 | if (er32(MANC) & E1000_MANC_SMBUS_EN) |
61c2505f BA |
459 | goto out; |
460 | break; | |
61c2505f BA |
461 | default: |
462 | goto out; | |
463 | } | |
1dc32918 | 464 | e1000_read_phy_reg(hw, PHY_CTRL, &mii_reg); |
79f05bf0 | 465 | mii_reg |= MII_CR_POWER_DOWN; |
1dc32918 | 466 | e1000_write_phy_reg(hw, PHY_CTRL, mii_reg); |
79f05bf0 AK |
467 | mdelay(1); |
468 | } | |
61c2505f BA |
469 | out: |
470 | return; | |
79f05bf0 AK |
471 | } |
472 | ||
64798845 | 473 | void e1000_down(struct e1000_adapter *adapter) |
1da177e4 | 474 | { |
a6c42322 | 475 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 476 | struct net_device *netdev = adapter->netdev; |
a6c42322 | 477 | u32 rctl, tctl; |
1da177e4 | 478 | |
1314bbf3 AK |
479 | /* signal that we're down so the interrupt handler does not |
480 | * reschedule our watchdog timer */ | |
481 | set_bit(__E1000_DOWN, &adapter->flags); | |
482 | ||
a6c42322 JB |
483 | /* disable receives in the hardware */ |
484 | rctl = er32(RCTL); | |
485 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
486 | /* flush and sleep below */ | |
487 | ||
51851073 | 488 | netif_tx_disable(netdev); |
a6c42322 JB |
489 | |
490 | /* disable transmits in the hardware */ | |
491 | tctl = er32(TCTL); | |
492 | tctl &= ~E1000_TCTL_EN; | |
493 | ew32(TCTL, tctl); | |
494 | /* flush both disables and wait for them to finish */ | |
495 | E1000_WRITE_FLUSH(); | |
496 | msleep(10); | |
497 | ||
bea3348e | 498 | napi_disable(&adapter->napi); |
c3570acb | 499 | |
1da177e4 | 500 | e1000_irq_disable(adapter); |
c1605eb3 | 501 | |
1da177e4 LT |
502 | del_timer_sync(&adapter->tx_fifo_stall_timer); |
503 | del_timer_sync(&adapter->watchdog_timer); | |
504 | del_timer_sync(&adapter->phy_info_timer); | |
505 | ||
7bfa4816 | 506 | netdev->tx_queue_len = adapter->tx_queue_len; |
1da177e4 LT |
507 | adapter->link_speed = 0; |
508 | adapter->link_duplex = 0; | |
509 | netif_carrier_off(netdev); | |
1da177e4 LT |
510 | |
511 | e1000_reset(adapter); | |
581d708e MC |
512 | e1000_clean_all_tx_rings(adapter); |
513 | e1000_clean_all_rx_rings(adapter); | |
1da177e4 | 514 | } |
1da177e4 | 515 | |
64798845 | 516 | void e1000_reinit_locked(struct e1000_adapter *adapter) |
2db10a08 AK |
517 | { |
518 | WARN_ON(in_interrupt()); | |
519 | while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) | |
520 | msleep(1); | |
521 | e1000_down(adapter); | |
522 | e1000_up(adapter); | |
523 | clear_bit(__E1000_RESETTING, &adapter->flags); | |
1da177e4 LT |
524 | } |
525 | ||
64798845 | 526 | void e1000_reset(struct e1000_adapter *adapter) |
1da177e4 | 527 | { |
1dc32918 | 528 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 529 | u32 pba = 0, tx_space, min_tx_space, min_rx_space; |
c3033b01 | 530 | bool legacy_pba_adjust = false; |
b7cb8c2c | 531 | u16 hwm; |
1da177e4 LT |
532 | |
533 | /* Repartition Pba for greater than 9k mtu | |
534 | * To take effect CTRL.RST is required. | |
535 | */ | |
536 | ||
1dc32918 | 537 | switch (hw->mac_type) { |
018ea44e BA |
538 | case e1000_82542_rev2_0: |
539 | case e1000_82542_rev2_1: | |
540 | case e1000_82543: | |
541 | case e1000_82544: | |
542 | case e1000_82540: | |
543 | case e1000_82541: | |
544 | case e1000_82541_rev_2: | |
c3033b01 | 545 | legacy_pba_adjust = true; |
018ea44e BA |
546 | pba = E1000_PBA_48K; |
547 | break; | |
548 | case e1000_82545: | |
549 | case e1000_82545_rev_3: | |
550 | case e1000_82546: | |
551 | case e1000_82546_rev_3: | |
552 | pba = E1000_PBA_48K; | |
553 | break; | |
2d7edb92 | 554 | case e1000_82547: |
0e6ef3e0 | 555 | case e1000_82547_rev_2: |
c3033b01 | 556 | legacy_pba_adjust = true; |
2d7edb92 MC |
557 | pba = E1000_PBA_30K; |
558 | break; | |
018ea44e BA |
559 | case e1000_undefined: |
560 | case e1000_num_macs: | |
2d7edb92 MC |
561 | break; |
562 | } | |
563 | ||
c3033b01 | 564 | if (legacy_pba_adjust) { |
b7cb8c2c | 565 | if (hw->max_frame_size > E1000_RXBUFFER_8192) |
018ea44e | 566 | pba -= 8; /* allocate more FIFO for Tx */ |
2d7edb92 | 567 | |
1dc32918 | 568 | if (hw->mac_type == e1000_82547) { |
018ea44e BA |
569 | adapter->tx_fifo_head = 0; |
570 | adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; | |
571 | adapter->tx_fifo_size = | |
572 | (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; | |
573 | atomic_set(&adapter->tx_fifo_stall, 0); | |
574 | } | |
b7cb8c2c | 575 | } else if (hw->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) { |
018ea44e | 576 | /* adjust PBA for jumbo frames */ |
1dc32918 | 577 | ew32(PBA, pba); |
018ea44e BA |
578 | |
579 | /* To maintain wire speed transmits, the Tx FIFO should be | |
b7cb8c2c | 580 | * large enough to accommodate two full transmit packets, |
018ea44e | 581 | * rounded up to the next 1KB and expressed in KB. Likewise, |
b7cb8c2c | 582 | * the Rx FIFO should be large enough to accommodate at least |
018ea44e BA |
583 | * one full receive packet and is similarly rounded up and |
584 | * expressed in KB. */ | |
1dc32918 | 585 | pba = er32(PBA); |
018ea44e BA |
586 | /* upper 16 bits has Tx packet buffer allocation size in KB */ |
587 | tx_space = pba >> 16; | |
588 | /* lower 16 bits has Rx packet buffer allocation size in KB */ | |
589 | pba &= 0xffff; | |
b7cb8c2c JB |
590 | /* |
591 | * the tx fifo also stores 16 bytes of information about the tx | |
592 | * but don't include ethernet FCS because hardware appends it | |
593 | */ | |
594 | min_tx_space = (hw->max_frame_size + | |
595 | sizeof(struct e1000_tx_desc) - | |
596 | ETH_FCS_LEN) * 2; | |
9099cfb9 | 597 | min_tx_space = ALIGN(min_tx_space, 1024); |
018ea44e | 598 | min_tx_space >>= 10; |
b7cb8c2c JB |
599 | /* software strips receive CRC, so leave room for it */ |
600 | min_rx_space = hw->max_frame_size; | |
9099cfb9 | 601 | min_rx_space = ALIGN(min_rx_space, 1024); |
018ea44e BA |
602 | min_rx_space >>= 10; |
603 | ||
604 | /* If current Tx allocation is less than the min Tx FIFO size, | |
605 | * and the min Tx FIFO size is less than the current Rx FIFO | |
606 | * allocation, take space away from current Rx allocation */ | |
607 | if (tx_space < min_tx_space && | |
608 | ((min_tx_space - tx_space) < pba)) { | |
609 | pba = pba - (min_tx_space - tx_space); | |
610 | ||
611 | /* PCI/PCIx hardware has PBA alignment constraints */ | |
1dc32918 | 612 | switch (hw->mac_type) { |
018ea44e BA |
613 | case e1000_82545 ... e1000_82546_rev_3: |
614 | pba &= ~(E1000_PBA_8K - 1); | |
615 | break; | |
616 | default: | |
617 | break; | |
618 | } | |
619 | ||
620 | /* if short on rx space, rx wins and must trump tx | |
621 | * adjustment or use Early Receive if available */ | |
1532ecea JB |
622 | if (pba < min_rx_space) |
623 | pba = min_rx_space; | |
018ea44e | 624 | } |
1da177e4 | 625 | } |
2d7edb92 | 626 | |
1dc32918 | 627 | ew32(PBA, pba); |
1da177e4 | 628 | |
b7cb8c2c JB |
629 | /* |
630 | * flow control settings: | |
631 | * The high water mark must be low enough to fit one full frame | |
632 | * (or the size used for early receive) above it in the Rx FIFO. | |
633 | * Set it to the lower of: | |
634 | * - 90% of the Rx FIFO size, and | |
635 | * - the full Rx FIFO size minus the early receive size (for parts | |
636 | * with ERT support assuming ERT set to E1000_ERT_2048), or | |
637 | * - the full Rx FIFO size minus one full frame | |
638 | */ | |
639 | hwm = min(((pba << 10) * 9 / 10), | |
640 | ((pba << 10) - hw->max_frame_size)); | |
641 | ||
642 | hw->fc_high_water = hwm & 0xFFF8; /* 8-byte granularity */ | |
643 | hw->fc_low_water = hw->fc_high_water - 8; | |
edbbb3ca | 644 | hw->fc_pause_time = E1000_FC_PAUSE_TIME; |
1dc32918 JP |
645 | hw->fc_send_xon = 1; |
646 | hw->fc = hw->original_fc; | |
1da177e4 | 647 | |
2d7edb92 | 648 | /* Allow time for pending master requests to run */ |
1dc32918 JP |
649 | e1000_reset_hw(hw); |
650 | if (hw->mac_type >= e1000_82544) | |
651 | ew32(WUC, 0); | |
09ae3e88 | 652 | |
1dc32918 | 653 | if (e1000_init_hw(hw)) |
1da177e4 | 654 | DPRINTK(PROBE, ERR, "Hardware Error\n"); |
2d7edb92 | 655 | e1000_update_mng_vlan(adapter); |
3d5460a0 JB |
656 | |
657 | /* if (adapter->hwflags & HWFLAGS_PHY_PWR_BIT) { */ | |
1dc32918 | 658 | if (hw->mac_type >= e1000_82544 && |
1dc32918 JP |
659 | hw->autoneg == 1 && |
660 | hw->autoneg_advertised == ADVERTISE_1000_FULL) { | |
661 | u32 ctrl = er32(CTRL); | |
3d5460a0 JB |
662 | /* clear phy power management bit if we are in gig only mode, |
663 | * which if enabled will attempt negotiation to 100Mb, which | |
664 | * can cause a loss of link at power off or driver unload */ | |
665 | ctrl &= ~E1000_CTRL_SWDPIN3; | |
1dc32918 | 666 | ew32(CTRL, ctrl); |
3d5460a0 JB |
667 | } |
668 | ||
1da177e4 | 669 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
1dc32918 | 670 | ew32(VET, ETHERNET_IEEE_VLAN_TYPE); |
1da177e4 | 671 | |
1dc32918 JP |
672 | e1000_reset_adaptive(hw); |
673 | e1000_phy_get_info(hw, &adapter->phy_info); | |
9a53a202 | 674 | |
0fccd0e9 | 675 | e1000_release_manageability(adapter); |
1da177e4 LT |
676 | } |
677 | ||
67b3c27c AK |
678 | /** |
679 | * Dump the eeprom for users having checksum issues | |
680 | **/ | |
b4ea895d | 681 | static void e1000_dump_eeprom(struct e1000_adapter *adapter) |
67b3c27c AK |
682 | { |
683 | struct net_device *netdev = adapter->netdev; | |
684 | struct ethtool_eeprom eeprom; | |
685 | const struct ethtool_ops *ops = netdev->ethtool_ops; | |
686 | u8 *data; | |
687 | int i; | |
688 | u16 csum_old, csum_new = 0; | |
689 | ||
690 | eeprom.len = ops->get_eeprom_len(netdev); | |
691 | eeprom.offset = 0; | |
692 | ||
693 | data = kmalloc(eeprom.len, GFP_KERNEL); | |
694 | if (!data) { | |
695 | printk(KERN_ERR "Unable to allocate memory to dump EEPROM" | |
696 | " data\n"); | |
697 | return; | |
698 | } | |
699 | ||
700 | ops->get_eeprom(netdev, &eeprom, data); | |
701 | ||
702 | csum_old = (data[EEPROM_CHECKSUM_REG * 2]) + | |
703 | (data[EEPROM_CHECKSUM_REG * 2 + 1] << 8); | |
704 | for (i = 0; i < EEPROM_CHECKSUM_REG * 2; i += 2) | |
705 | csum_new += data[i] + (data[i + 1] << 8); | |
706 | csum_new = EEPROM_SUM - csum_new; | |
707 | ||
708 | printk(KERN_ERR "/*********************/\n"); | |
709 | printk(KERN_ERR "Current EEPROM Checksum : 0x%04x\n", csum_old); | |
710 | printk(KERN_ERR "Calculated : 0x%04x\n", csum_new); | |
711 | ||
712 | printk(KERN_ERR "Offset Values\n"); | |
713 | printk(KERN_ERR "======== ======\n"); | |
714 | print_hex_dump(KERN_ERR, "", DUMP_PREFIX_OFFSET, 16, 1, data, 128, 0); | |
715 | ||
716 | printk(KERN_ERR "Include this output when contacting your support " | |
717 | "provider.\n"); | |
718 | printk(KERN_ERR "This is not a software error! Something bad " | |
719 | "happened to your hardware or\n"); | |
720 | printk(KERN_ERR "EEPROM image. Ignoring this " | |
721 | "problem could result in further problems,\n"); | |
722 | printk(KERN_ERR "possibly loss of data, corruption or system hangs!\n"); | |
723 | printk(KERN_ERR "The MAC Address will be reset to 00:00:00:00:00:00, " | |
724 | "which is invalid\n"); | |
725 | printk(KERN_ERR "and requires you to set the proper MAC " | |
726 | "address manually before continuing\n"); | |
727 | printk(KERN_ERR "to enable this network device.\n"); | |
728 | printk(KERN_ERR "Please inspect the EEPROM dump and report the issue " | |
729 | "to your hardware vendor\n"); | |
63cd31f6 | 730 | printk(KERN_ERR "or Intel Customer Support.\n"); |
67b3c27c AK |
731 | printk(KERN_ERR "/*********************/\n"); |
732 | ||
733 | kfree(data); | |
734 | } | |
735 | ||
81250297 TI |
736 | /** |
737 | * e1000_is_need_ioport - determine if an adapter needs ioport resources or not | |
738 | * @pdev: PCI device information struct | |
739 | * | |
740 | * Return true if an adapter needs ioport resources | |
741 | **/ | |
742 | static int e1000_is_need_ioport(struct pci_dev *pdev) | |
743 | { | |
744 | switch (pdev->device) { | |
745 | case E1000_DEV_ID_82540EM: | |
746 | case E1000_DEV_ID_82540EM_LOM: | |
747 | case E1000_DEV_ID_82540EP: | |
748 | case E1000_DEV_ID_82540EP_LOM: | |
749 | case E1000_DEV_ID_82540EP_LP: | |
750 | case E1000_DEV_ID_82541EI: | |
751 | case E1000_DEV_ID_82541EI_MOBILE: | |
752 | case E1000_DEV_ID_82541ER: | |
753 | case E1000_DEV_ID_82541ER_LOM: | |
754 | case E1000_DEV_ID_82541GI: | |
755 | case E1000_DEV_ID_82541GI_LF: | |
756 | case E1000_DEV_ID_82541GI_MOBILE: | |
757 | case E1000_DEV_ID_82544EI_COPPER: | |
758 | case E1000_DEV_ID_82544EI_FIBER: | |
759 | case E1000_DEV_ID_82544GC_COPPER: | |
760 | case E1000_DEV_ID_82544GC_LOM: | |
761 | case E1000_DEV_ID_82545EM_COPPER: | |
762 | case E1000_DEV_ID_82545EM_FIBER: | |
763 | case E1000_DEV_ID_82546EB_COPPER: | |
764 | case E1000_DEV_ID_82546EB_FIBER: | |
765 | case E1000_DEV_ID_82546EB_QUAD_COPPER: | |
766 | return true; | |
767 | default: | |
768 | return false; | |
769 | } | |
770 | } | |
771 | ||
0e7614bc SH |
772 | static const struct net_device_ops e1000_netdev_ops = { |
773 | .ndo_open = e1000_open, | |
774 | .ndo_stop = e1000_close, | |
00829823 | 775 | .ndo_start_xmit = e1000_xmit_frame, |
0e7614bc SH |
776 | .ndo_get_stats = e1000_get_stats, |
777 | .ndo_set_rx_mode = e1000_set_rx_mode, | |
778 | .ndo_set_mac_address = e1000_set_mac, | |
779 | .ndo_tx_timeout = e1000_tx_timeout, | |
780 | .ndo_change_mtu = e1000_change_mtu, | |
781 | .ndo_do_ioctl = e1000_ioctl, | |
782 | .ndo_validate_addr = eth_validate_addr, | |
783 | ||
784 | .ndo_vlan_rx_register = e1000_vlan_rx_register, | |
785 | .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, | |
786 | .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, | |
787 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
788 | .ndo_poll_controller = e1000_netpoll, | |
789 | #endif | |
790 | }; | |
791 | ||
1da177e4 LT |
792 | /** |
793 | * e1000_probe - Device Initialization Routine | |
794 | * @pdev: PCI device information struct | |
795 | * @ent: entry in e1000_pci_tbl | |
796 | * | |
797 | * Returns 0 on success, negative on failure | |
798 | * | |
799 | * e1000_probe initializes an adapter identified by a pci_dev structure. | |
800 | * The OS initialization, configuring of the adapter private structure, | |
801 | * and a hardware reset occur. | |
802 | **/ | |
1dc32918 JP |
803 | static int __devinit e1000_probe(struct pci_dev *pdev, |
804 | const struct pci_device_id *ent) | |
1da177e4 LT |
805 | { |
806 | struct net_device *netdev; | |
807 | struct e1000_adapter *adapter; | |
1dc32918 | 808 | struct e1000_hw *hw; |
2d7edb92 | 809 | |
1da177e4 | 810 | static int cards_found = 0; |
120cd576 | 811 | static int global_quad_port_a = 0; /* global ksp3 port a indication */ |
2d7edb92 | 812 | int i, err, pci_using_dac; |
406874a7 JP |
813 | u16 eeprom_data = 0; |
814 | u16 eeprom_apme_mask = E1000_EEPROM_APME; | |
81250297 | 815 | int bars, need_ioport; |
0795af57 | 816 | |
81250297 TI |
817 | /* do not allocate ioport bars when not needed */ |
818 | need_ioport = e1000_is_need_ioport(pdev); | |
819 | if (need_ioport) { | |
820 | bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO); | |
821 | err = pci_enable_device(pdev); | |
822 | } else { | |
823 | bars = pci_select_bars(pdev, IORESOURCE_MEM); | |
4d7155b9 | 824 | err = pci_enable_device_mem(pdev); |
81250297 | 825 | } |
c7be73bc | 826 | if (err) |
1da177e4 LT |
827 | return err; |
828 | ||
6a35528a YH |
829 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) && |
830 | !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) { | |
1da177e4 LT |
831 | pci_using_dac = 1; |
832 | } else { | |
284901a9 | 833 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
c7be73bc | 834 | if (err) { |
284901a9 | 835 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
c7be73bc JP |
836 | if (err) { |
837 | E1000_ERR("No usable DMA configuration, " | |
838 | "aborting\n"); | |
839 | goto err_dma; | |
840 | } | |
1da177e4 LT |
841 | } |
842 | pci_using_dac = 0; | |
843 | } | |
844 | ||
81250297 | 845 | err = pci_request_selected_regions(pdev, bars, e1000_driver_name); |
c7be73bc | 846 | if (err) |
6dd62ab0 | 847 | goto err_pci_reg; |
1da177e4 LT |
848 | |
849 | pci_set_master(pdev); | |
850 | ||
6dd62ab0 | 851 | err = -ENOMEM; |
1da177e4 | 852 | netdev = alloc_etherdev(sizeof(struct e1000_adapter)); |
6dd62ab0 | 853 | if (!netdev) |
1da177e4 | 854 | goto err_alloc_etherdev; |
1da177e4 | 855 | |
1da177e4 LT |
856 | SET_NETDEV_DEV(netdev, &pdev->dev); |
857 | ||
858 | pci_set_drvdata(pdev, netdev); | |
60490fe0 | 859 | adapter = netdev_priv(netdev); |
1da177e4 LT |
860 | adapter->netdev = netdev; |
861 | adapter->pdev = pdev; | |
1da177e4 | 862 | adapter->msg_enable = (1 << debug) - 1; |
81250297 TI |
863 | adapter->bars = bars; |
864 | adapter->need_ioport = need_ioport; | |
1da177e4 | 865 | |
1dc32918 JP |
866 | hw = &adapter->hw; |
867 | hw->back = adapter; | |
868 | ||
6dd62ab0 | 869 | err = -EIO; |
275f165f | 870 | hw->hw_addr = pci_ioremap_bar(pdev, BAR_0); |
1dc32918 | 871 | if (!hw->hw_addr) |
1da177e4 | 872 | goto err_ioremap; |
1da177e4 | 873 | |
81250297 TI |
874 | if (adapter->need_ioport) { |
875 | for (i = BAR_1; i <= BAR_5; i++) { | |
876 | if (pci_resource_len(pdev, i) == 0) | |
877 | continue; | |
878 | if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { | |
879 | hw->io_base = pci_resource_start(pdev, i); | |
880 | break; | |
881 | } | |
1da177e4 LT |
882 | } |
883 | } | |
884 | ||
0e7614bc | 885 | netdev->netdev_ops = &e1000_netdev_ops; |
1da177e4 | 886 | e1000_set_ethtool_ops(netdev); |
1da177e4 | 887 | netdev->watchdog_timeo = 5 * HZ; |
bea3348e | 888 | netif_napi_add(netdev, &adapter->napi, e1000_clean, 64); |
0e7614bc | 889 | |
0eb5a34c | 890 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
1da177e4 | 891 | |
1da177e4 LT |
892 | adapter->bd_number = cards_found; |
893 | ||
894 | /* setup the private structure */ | |
895 | ||
c7be73bc JP |
896 | err = e1000_sw_init(adapter); |
897 | if (err) | |
1da177e4 LT |
898 | goto err_sw_init; |
899 | ||
6dd62ab0 | 900 | err = -EIO; |
2d7edb92 | 901 | |
1dc32918 | 902 | if (hw->mac_type >= e1000_82543) { |
1da177e4 LT |
903 | netdev->features = NETIF_F_SG | |
904 | NETIF_F_HW_CSUM | | |
905 | NETIF_F_HW_VLAN_TX | | |
906 | NETIF_F_HW_VLAN_RX | | |
907 | NETIF_F_HW_VLAN_FILTER; | |
908 | } | |
909 | ||
1dc32918 JP |
910 | if ((hw->mac_type >= e1000_82544) && |
911 | (hw->mac_type != e1000_82547)) | |
1da177e4 | 912 | netdev->features |= NETIF_F_TSO; |
2d7edb92 | 913 | |
96838a40 | 914 | if (pci_using_dac) |
1da177e4 LT |
915 | netdev->features |= NETIF_F_HIGHDMA; |
916 | ||
20501a69 | 917 | netdev->vlan_features |= NETIF_F_TSO; |
20501a69 PM |
918 | netdev->vlan_features |= NETIF_F_HW_CSUM; |
919 | netdev->vlan_features |= NETIF_F_SG; | |
920 | ||
1dc32918 | 921 | adapter->en_mng_pt = e1000_enable_mng_pass_thru(hw); |
2d7edb92 | 922 | |
cd94dd0b | 923 | /* initialize eeprom parameters */ |
1dc32918 | 924 | if (e1000_init_eeprom_params(hw)) { |
cd94dd0b | 925 | E1000_ERR("EEPROM initialization failed\n"); |
6dd62ab0 | 926 | goto err_eeprom; |
cd94dd0b AK |
927 | } |
928 | ||
96838a40 | 929 | /* before reading the EEPROM, reset the controller to |
1da177e4 | 930 | * put the device in a known good starting state */ |
96838a40 | 931 | |
1dc32918 | 932 | e1000_reset_hw(hw); |
1da177e4 LT |
933 | |
934 | /* make sure the EEPROM is good */ | |
1dc32918 | 935 | if (e1000_validate_eeprom_checksum(hw) < 0) { |
1da177e4 | 936 | DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n"); |
67b3c27c AK |
937 | e1000_dump_eeprom(adapter); |
938 | /* | |
939 | * set MAC address to all zeroes to invalidate and temporary | |
940 | * disable this device for the user. This blocks regular | |
941 | * traffic while still permitting ethtool ioctls from reaching | |
942 | * the hardware as well as allowing the user to run the | |
943 | * interface after manually setting a hw addr using | |
944 | * `ip set address` | |
945 | */ | |
1dc32918 | 946 | memset(hw->mac_addr, 0, netdev->addr_len); |
67b3c27c AK |
947 | } else { |
948 | /* copy the MAC address out of the EEPROM */ | |
1dc32918 | 949 | if (e1000_read_mac_addr(hw)) |
67b3c27c | 950 | DPRINTK(PROBE, ERR, "EEPROM Read Error\n"); |
1da177e4 | 951 | } |
67b3c27c | 952 | /* don't block initalization here due to bad MAC address */ |
1dc32918 JP |
953 | memcpy(netdev->dev_addr, hw->mac_addr, netdev->addr_len); |
954 | memcpy(netdev->perm_addr, hw->mac_addr, netdev->addr_len); | |
1da177e4 | 955 | |
67b3c27c | 956 | if (!is_valid_ether_addr(netdev->perm_addr)) |
1da177e4 | 957 | DPRINTK(PROBE, ERR, "Invalid MAC Address\n"); |
1da177e4 | 958 | |
1dc32918 | 959 | e1000_get_bus_info(hw); |
1da177e4 LT |
960 | |
961 | init_timer(&adapter->tx_fifo_stall_timer); | |
962 | adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall; | |
e982f17c | 963 | adapter->tx_fifo_stall_timer.data = (unsigned long)adapter; |
1da177e4 LT |
964 | |
965 | init_timer(&adapter->watchdog_timer); | |
966 | adapter->watchdog_timer.function = &e1000_watchdog; | |
967 | adapter->watchdog_timer.data = (unsigned long) adapter; | |
968 | ||
1da177e4 LT |
969 | init_timer(&adapter->phy_info_timer); |
970 | adapter->phy_info_timer.function = &e1000_update_phy_info; | |
e982f17c | 971 | adapter->phy_info_timer.data = (unsigned long)adapter; |
1da177e4 | 972 | |
65f27f38 | 973 | INIT_WORK(&adapter->reset_task, e1000_reset_task); |
1da177e4 | 974 | |
1da177e4 LT |
975 | e1000_check_options(adapter); |
976 | ||
977 | /* Initial Wake on LAN setting | |
978 | * If APM wake is enabled in the EEPROM, | |
979 | * enable the ACPI Magic Packet filter | |
980 | */ | |
981 | ||
1dc32918 | 982 | switch (hw->mac_type) { |
1da177e4 LT |
983 | case e1000_82542_rev2_0: |
984 | case e1000_82542_rev2_1: | |
985 | case e1000_82543: | |
986 | break; | |
987 | case e1000_82544: | |
1dc32918 | 988 | e1000_read_eeprom(hw, |
1da177e4 LT |
989 | EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); |
990 | eeprom_apme_mask = E1000_EEPROM_82544_APM; | |
991 | break; | |
992 | case e1000_82546: | |
993 | case e1000_82546_rev_3: | |
1dc32918 JP |
994 | if (er32(STATUS) & E1000_STATUS_FUNC_1){ |
995 | e1000_read_eeprom(hw, | |
1da177e4 LT |
996 | EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); |
997 | break; | |
998 | } | |
999 | /* Fall Through */ | |
1000 | default: | |
1dc32918 | 1001 | e1000_read_eeprom(hw, |
1da177e4 LT |
1002 | EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); |
1003 | break; | |
1004 | } | |
96838a40 | 1005 | if (eeprom_data & eeprom_apme_mask) |
120cd576 JB |
1006 | adapter->eeprom_wol |= E1000_WUFC_MAG; |
1007 | ||
1008 | /* now that we have the eeprom settings, apply the special cases | |
1009 | * where the eeprom may be wrong or the board simply won't support | |
1010 | * wake on lan on a particular port */ | |
1011 | switch (pdev->device) { | |
1012 | case E1000_DEV_ID_82546GB_PCIE: | |
1013 | adapter->eeprom_wol = 0; | |
1014 | break; | |
1015 | case E1000_DEV_ID_82546EB_FIBER: | |
1016 | case E1000_DEV_ID_82546GB_FIBER: | |
120cd576 JB |
1017 | /* Wake events only supported on port A for dual fiber |
1018 | * regardless of eeprom setting */ | |
1dc32918 | 1019 | if (er32(STATUS) & E1000_STATUS_FUNC_1) |
120cd576 JB |
1020 | adapter->eeprom_wol = 0; |
1021 | break; | |
1022 | case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3: | |
1023 | /* if quad port adapter, disable WoL on all but port A */ | |
1024 | if (global_quad_port_a != 0) | |
1025 | adapter->eeprom_wol = 0; | |
1026 | else | |
1027 | adapter->quad_port_a = 1; | |
1028 | /* Reset for multiple quad port adapters */ | |
1029 | if (++global_quad_port_a == 4) | |
1030 | global_quad_port_a = 0; | |
1031 | break; | |
1032 | } | |
1033 | ||
1034 | /* initialize the wol settings based on the eeprom settings */ | |
1035 | adapter->wol = adapter->eeprom_wol; | |
de126489 | 1036 | device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
1da177e4 | 1037 | |
fb3d47d4 | 1038 | /* print bus type/speed/width info */ |
fb3d47d4 | 1039 | DPRINTK(PROBE, INFO, "(PCI%s:%s:%s) ", |
1532ecea JB |
1040 | ((hw->bus_type == e1000_bus_type_pcix) ? "-X" : ""), |
1041 | ((hw->bus_speed == e1000_bus_speed_133) ? "133MHz" : | |
fb3d47d4 JK |
1042 | (hw->bus_speed == e1000_bus_speed_120) ? "120MHz" : |
1043 | (hw->bus_speed == e1000_bus_speed_100) ? "100MHz" : | |
1044 | (hw->bus_speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"), | |
1532ecea | 1045 | ((hw->bus_width == e1000_bus_width_64) ? "64-bit" : "32-bit")); |
fb3d47d4 | 1046 | |
e174961c | 1047 | printk("%pM\n", netdev->dev_addr); |
fb3d47d4 | 1048 | |
1da177e4 LT |
1049 | /* reset the hardware with the new settings */ |
1050 | e1000_reset(adapter); | |
1051 | ||
416b5d10 | 1052 | strcpy(netdev->name, "eth%d"); |
c7be73bc JP |
1053 | err = register_netdev(netdev); |
1054 | if (err) | |
416b5d10 | 1055 | goto err_register; |
1314bbf3 | 1056 | |
eb62efd2 JB |
1057 | /* carrier off reporting is important to ethtool even BEFORE open */ |
1058 | netif_carrier_off(netdev); | |
1059 | ||
1da177e4 LT |
1060 | DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n"); |
1061 | ||
1062 | cards_found++; | |
1063 | return 0; | |
1064 | ||
1065 | err_register: | |
6dd62ab0 | 1066 | err_eeprom: |
1532ecea | 1067 | e1000_phy_hw_reset(hw); |
6dd62ab0 | 1068 | |
1dc32918 JP |
1069 | if (hw->flash_address) |
1070 | iounmap(hw->flash_address); | |
6dd62ab0 VA |
1071 | kfree(adapter->tx_ring); |
1072 | kfree(adapter->rx_ring); | |
1da177e4 | 1073 | err_sw_init: |
1dc32918 | 1074 | iounmap(hw->hw_addr); |
1da177e4 LT |
1075 | err_ioremap: |
1076 | free_netdev(netdev); | |
1077 | err_alloc_etherdev: | |
81250297 | 1078 | pci_release_selected_regions(pdev, bars); |
6dd62ab0 VA |
1079 | err_pci_reg: |
1080 | err_dma: | |
1081 | pci_disable_device(pdev); | |
1da177e4 LT |
1082 | return err; |
1083 | } | |
1084 | ||
1085 | /** | |
1086 | * e1000_remove - Device Removal Routine | |
1087 | * @pdev: PCI device information struct | |
1088 | * | |
1089 | * e1000_remove is called by the PCI subsystem to alert the driver | |
1090 | * that it should release a PCI device. The could be caused by a | |
1091 | * Hot-Plug event, or because the driver is going to be removed from | |
1092 | * memory. | |
1093 | **/ | |
1094 | ||
64798845 | 1095 | static void __devexit e1000_remove(struct pci_dev *pdev) |
1da177e4 LT |
1096 | { |
1097 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 1098 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 1099 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 1100 | |
baa34745 JB |
1101 | set_bit(__E1000_DOWN, &adapter->flags); |
1102 | del_timer_sync(&adapter->tx_fifo_stall_timer); | |
1103 | del_timer_sync(&adapter->watchdog_timer); | |
1104 | del_timer_sync(&adapter->phy_info_timer); | |
1105 | ||
28e53bdd | 1106 | cancel_work_sync(&adapter->reset_task); |
be2b28ed | 1107 | |
0fccd0e9 | 1108 | e1000_release_manageability(adapter); |
1da177e4 | 1109 | |
bea3348e SH |
1110 | unregister_netdev(netdev); |
1111 | ||
1532ecea | 1112 | e1000_phy_hw_reset(hw); |
1da177e4 | 1113 | |
24025e4e MC |
1114 | kfree(adapter->tx_ring); |
1115 | kfree(adapter->rx_ring); | |
24025e4e | 1116 | |
1dc32918 JP |
1117 | iounmap(hw->hw_addr); |
1118 | if (hw->flash_address) | |
1119 | iounmap(hw->flash_address); | |
81250297 | 1120 | pci_release_selected_regions(pdev, adapter->bars); |
1da177e4 LT |
1121 | |
1122 | free_netdev(netdev); | |
1123 | ||
1124 | pci_disable_device(pdev); | |
1125 | } | |
1126 | ||
1127 | /** | |
1128 | * e1000_sw_init - Initialize general software structures (struct e1000_adapter) | |
1129 | * @adapter: board private structure to initialize | |
1130 | * | |
1131 | * e1000_sw_init initializes the Adapter private data structure. | |
1132 | * Fields are initialized based on PCI device information and | |
1133 | * OS network device settings (MTU size). | |
1134 | **/ | |
1135 | ||
64798845 | 1136 | static int __devinit e1000_sw_init(struct e1000_adapter *adapter) |
1da177e4 LT |
1137 | { |
1138 | struct e1000_hw *hw = &adapter->hw; | |
1139 | struct net_device *netdev = adapter->netdev; | |
1140 | struct pci_dev *pdev = adapter->pdev; | |
1141 | ||
1142 | /* PCI config space info */ | |
1143 | ||
1144 | hw->vendor_id = pdev->vendor; | |
1145 | hw->device_id = pdev->device; | |
1146 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
1147 | hw->subsystem_id = pdev->subsystem_device; | |
44c10138 | 1148 | hw->revision_id = pdev->revision; |
1da177e4 LT |
1149 | |
1150 | pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); | |
1151 | ||
eb0f8054 | 1152 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
1da177e4 LT |
1153 | hw->max_frame_size = netdev->mtu + |
1154 | ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; | |
1155 | hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; | |
1156 | ||
1157 | /* identify the MAC */ | |
1158 | ||
96838a40 | 1159 | if (e1000_set_mac_type(hw)) { |
1da177e4 LT |
1160 | DPRINTK(PROBE, ERR, "Unknown MAC Type\n"); |
1161 | return -EIO; | |
1162 | } | |
1163 | ||
96838a40 | 1164 | switch (hw->mac_type) { |
1da177e4 LT |
1165 | default: |
1166 | break; | |
1167 | case e1000_82541: | |
1168 | case e1000_82547: | |
1169 | case e1000_82541_rev_2: | |
1170 | case e1000_82547_rev_2: | |
1171 | hw->phy_init_script = 1; | |
1172 | break; | |
1173 | } | |
1174 | ||
1175 | e1000_set_media_type(hw); | |
1176 | ||
c3033b01 JP |
1177 | hw->wait_autoneg_complete = false; |
1178 | hw->tbi_compatibility_en = true; | |
1179 | hw->adaptive_ifs = true; | |
1da177e4 LT |
1180 | |
1181 | /* Copper options */ | |
1182 | ||
96838a40 | 1183 | if (hw->media_type == e1000_media_type_copper) { |
1da177e4 | 1184 | hw->mdix = AUTO_ALL_MODES; |
c3033b01 | 1185 | hw->disable_polarity_correction = false; |
1da177e4 LT |
1186 | hw->master_slave = E1000_MASTER_SLAVE; |
1187 | } | |
1188 | ||
f56799ea JK |
1189 | adapter->num_tx_queues = 1; |
1190 | adapter->num_rx_queues = 1; | |
581d708e MC |
1191 | |
1192 | if (e1000_alloc_queues(adapter)) { | |
1193 | DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n"); | |
1194 | return -ENOMEM; | |
1195 | } | |
1196 | ||
47313054 | 1197 | /* Explicitly disable IRQ since the NIC can be in any state. */ |
47313054 HX |
1198 | e1000_irq_disable(adapter); |
1199 | ||
1da177e4 | 1200 | spin_lock_init(&adapter->stats_lock); |
1da177e4 | 1201 | |
1314bbf3 AK |
1202 | set_bit(__E1000_DOWN, &adapter->flags); |
1203 | ||
1da177e4 LT |
1204 | return 0; |
1205 | } | |
1206 | ||
581d708e MC |
1207 | /** |
1208 | * e1000_alloc_queues - Allocate memory for all rings | |
1209 | * @adapter: board private structure to initialize | |
1210 | * | |
1211 | * We allocate one ring per queue at run-time since we don't know the | |
3e1d7cd2 | 1212 | * number of queues at compile-time. |
581d708e MC |
1213 | **/ |
1214 | ||
64798845 | 1215 | static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter) |
581d708e | 1216 | { |
1c7e5b12 YB |
1217 | adapter->tx_ring = kcalloc(adapter->num_tx_queues, |
1218 | sizeof(struct e1000_tx_ring), GFP_KERNEL); | |
581d708e MC |
1219 | if (!adapter->tx_ring) |
1220 | return -ENOMEM; | |
581d708e | 1221 | |
1c7e5b12 YB |
1222 | adapter->rx_ring = kcalloc(adapter->num_rx_queues, |
1223 | sizeof(struct e1000_rx_ring), GFP_KERNEL); | |
581d708e MC |
1224 | if (!adapter->rx_ring) { |
1225 | kfree(adapter->tx_ring); | |
1226 | return -ENOMEM; | |
1227 | } | |
581d708e | 1228 | |
581d708e MC |
1229 | return E1000_SUCCESS; |
1230 | } | |
1231 | ||
1da177e4 LT |
1232 | /** |
1233 | * e1000_open - Called when a network interface is made active | |
1234 | * @netdev: network interface device structure | |
1235 | * | |
1236 | * Returns 0 on success, negative value on failure | |
1237 | * | |
1238 | * The open entry point is called when a network interface is made | |
1239 | * active by the system (IFF_UP). At this point all resources needed | |
1240 | * for transmit and receive operations are allocated, the interrupt | |
1241 | * handler is registered with the OS, the watchdog timer is started, | |
1242 | * and the stack is notified that the interface is ready. | |
1243 | **/ | |
1244 | ||
64798845 | 1245 | static int e1000_open(struct net_device *netdev) |
1da177e4 | 1246 | { |
60490fe0 | 1247 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 1248 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
1249 | int err; |
1250 | ||
2db10a08 | 1251 | /* disallow open during test */ |
1314bbf3 | 1252 | if (test_bit(__E1000_TESTING, &adapter->flags)) |
2db10a08 AK |
1253 | return -EBUSY; |
1254 | ||
eb62efd2 JB |
1255 | netif_carrier_off(netdev); |
1256 | ||
1da177e4 | 1257 | /* allocate transmit descriptors */ |
e0aac5a2 AK |
1258 | err = e1000_setup_all_tx_resources(adapter); |
1259 | if (err) | |
1da177e4 LT |
1260 | goto err_setup_tx; |
1261 | ||
1262 | /* allocate receive descriptors */ | |
e0aac5a2 | 1263 | err = e1000_setup_all_rx_resources(adapter); |
b5bf28cd | 1264 | if (err) |
e0aac5a2 | 1265 | goto err_setup_rx; |
b5bf28cd | 1266 | |
79f05bf0 AK |
1267 | e1000_power_up_phy(adapter); |
1268 | ||
2d7edb92 | 1269 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
1dc32918 | 1270 | if ((hw->mng_cookie.status & |
2d7edb92 MC |
1271 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { |
1272 | e1000_update_mng_vlan(adapter); | |
1273 | } | |
1da177e4 | 1274 | |
e0aac5a2 AK |
1275 | /* before we allocate an interrupt, we must be ready to handle it. |
1276 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt | |
1277 | * as soon as we call pci_request_irq, so we have to setup our | |
1278 | * clean_rx handler before we do so. */ | |
1279 | e1000_configure(adapter); | |
1280 | ||
1281 | err = e1000_request_irq(adapter); | |
1282 | if (err) | |
1283 | goto err_req_irq; | |
1284 | ||
1285 | /* From here on the code is the same as e1000_up() */ | |
1286 | clear_bit(__E1000_DOWN, &adapter->flags); | |
1287 | ||
bea3348e | 1288 | napi_enable(&adapter->napi); |
47313054 | 1289 | |
e0aac5a2 AK |
1290 | e1000_irq_enable(adapter); |
1291 | ||
076152d5 BH |
1292 | netif_start_queue(netdev); |
1293 | ||
e0aac5a2 | 1294 | /* fire a link status change interrupt to start the watchdog */ |
1dc32918 | 1295 | ew32(ICS, E1000_ICS_LSC); |
e0aac5a2 | 1296 | |
1da177e4 LT |
1297 | return E1000_SUCCESS; |
1298 | ||
b5bf28cd | 1299 | err_req_irq: |
e0aac5a2 | 1300 | e1000_power_down_phy(adapter); |
581d708e | 1301 | e1000_free_all_rx_resources(adapter); |
1da177e4 | 1302 | err_setup_rx: |
581d708e | 1303 | e1000_free_all_tx_resources(adapter); |
1da177e4 LT |
1304 | err_setup_tx: |
1305 | e1000_reset(adapter); | |
1306 | ||
1307 | return err; | |
1308 | } | |
1309 | ||
1310 | /** | |
1311 | * e1000_close - Disables a network interface | |
1312 | * @netdev: network interface device structure | |
1313 | * | |
1314 | * Returns 0, this is not allowed to fail | |
1315 | * | |
1316 | * The close entry point is called when an interface is de-activated | |
1317 | * by the OS. The hardware is still under the drivers control, but | |
1318 | * needs to be disabled. A global MAC reset is issued to stop the | |
1319 | * hardware, and all transmit and receive resources are freed. | |
1320 | **/ | |
1321 | ||
64798845 | 1322 | static int e1000_close(struct net_device *netdev) |
1da177e4 | 1323 | { |
60490fe0 | 1324 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 1325 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 1326 | |
2db10a08 | 1327 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); |
1da177e4 | 1328 | e1000_down(adapter); |
79f05bf0 | 1329 | e1000_power_down_phy(adapter); |
2db10a08 | 1330 | e1000_free_irq(adapter); |
1da177e4 | 1331 | |
581d708e MC |
1332 | e1000_free_all_tx_resources(adapter); |
1333 | e1000_free_all_rx_resources(adapter); | |
1da177e4 | 1334 | |
4666560a BA |
1335 | /* kill manageability vlan ID if supported, but not if a vlan with |
1336 | * the same ID is registered on the host OS (let 8021q kill it) */ | |
1dc32918 | 1337 | if ((hw->mng_cookie.status & |
4666560a BA |
1338 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
1339 | !(adapter->vlgrp && | |
5c15bdec | 1340 | vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) { |
2d7edb92 MC |
1341 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
1342 | } | |
b55ccb35 | 1343 | |
1da177e4 LT |
1344 | return 0; |
1345 | } | |
1346 | ||
1347 | /** | |
1348 | * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary | |
1349 | * @adapter: address of board private structure | |
2d7edb92 MC |
1350 | * @start: address of beginning of memory |
1351 | * @len: length of memory | |
1da177e4 | 1352 | **/ |
64798845 JP |
1353 | static bool e1000_check_64k_bound(struct e1000_adapter *adapter, void *start, |
1354 | unsigned long len) | |
1da177e4 | 1355 | { |
1dc32918 | 1356 | struct e1000_hw *hw = &adapter->hw; |
e982f17c | 1357 | unsigned long begin = (unsigned long)start; |
1da177e4 LT |
1358 | unsigned long end = begin + len; |
1359 | ||
2648345f MC |
1360 | /* First rev 82545 and 82546 need to not allow any memory |
1361 | * write location to cross 64k boundary due to errata 23 */ | |
1dc32918 JP |
1362 | if (hw->mac_type == e1000_82545 || |
1363 | hw->mac_type == e1000_82546) { | |
c3033b01 | 1364 | return ((begin ^ (end - 1)) >> 16) != 0 ? false : true; |
1da177e4 LT |
1365 | } |
1366 | ||
c3033b01 | 1367 | return true; |
1da177e4 LT |
1368 | } |
1369 | ||
1370 | /** | |
1371 | * e1000_setup_tx_resources - allocate Tx resources (Descriptors) | |
1372 | * @adapter: board private structure | |
581d708e | 1373 | * @txdr: tx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1374 | * |
1375 | * Return 0 on success, negative on failure | |
1376 | **/ | |
1377 | ||
64798845 JP |
1378 | static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
1379 | struct e1000_tx_ring *txdr) | |
1da177e4 | 1380 | { |
1da177e4 LT |
1381 | struct pci_dev *pdev = adapter->pdev; |
1382 | int size; | |
1383 | ||
1384 | size = sizeof(struct e1000_buffer) * txdr->count; | |
cd94dd0b | 1385 | txdr->buffer_info = vmalloc(size); |
96838a40 | 1386 | if (!txdr->buffer_info) { |
2648345f MC |
1387 | DPRINTK(PROBE, ERR, |
1388 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1da177e4 LT |
1389 | return -ENOMEM; |
1390 | } | |
1391 | memset(txdr->buffer_info, 0, size); | |
1392 | ||
1393 | /* round up to nearest 4K */ | |
1394 | ||
1395 | txdr->size = txdr->count * sizeof(struct e1000_tx_desc); | |
9099cfb9 | 1396 | txdr->size = ALIGN(txdr->size, 4096); |
1da177e4 LT |
1397 | |
1398 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); | |
96838a40 | 1399 | if (!txdr->desc) { |
1da177e4 | 1400 | setup_tx_desc_die: |
1da177e4 | 1401 | vfree(txdr->buffer_info); |
2648345f MC |
1402 | DPRINTK(PROBE, ERR, |
1403 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1da177e4 LT |
1404 | return -ENOMEM; |
1405 | } | |
1406 | ||
2648345f | 1407 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1408 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
1409 | void *olddesc = txdr->desc; | |
1410 | dma_addr_t olddma = txdr->dma; | |
2648345f MC |
1411 | DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes " |
1412 | "at %p\n", txdr->size, txdr->desc); | |
1413 | /* Try again, without freeing the previous */ | |
1da177e4 | 1414 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); |
2648345f | 1415 | /* Failed allocation, critical failure */ |
96838a40 | 1416 | if (!txdr->desc) { |
1da177e4 LT |
1417 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1418 | goto setup_tx_desc_die; | |
1419 | } | |
1420 | ||
1421 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { | |
1422 | /* give up */ | |
2648345f MC |
1423 | pci_free_consistent(pdev, txdr->size, txdr->desc, |
1424 | txdr->dma); | |
1da177e4 LT |
1425 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1426 | DPRINTK(PROBE, ERR, | |
2648345f MC |
1427 | "Unable to allocate aligned memory " |
1428 | "for the transmit descriptor ring\n"); | |
1da177e4 LT |
1429 | vfree(txdr->buffer_info); |
1430 | return -ENOMEM; | |
1431 | } else { | |
2648345f | 1432 | /* Free old allocation, new allocation was successful */ |
1da177e4 LT |
1433 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1434 | } | |
1435 | } | |
1436 | memset(txdr->desc, 0, txdr->size); | |
1437 | ||
1438 | txdr->next_to_use = 0; | |
1439 | txdr->next_to_clean = 0; | |
1440 | ||
1441 | return 0; | |
1442 | } | |
1443 | ||
581d708e MC |
1444 | /** |
1445 | * e1000_setup_all_tx_resources - wrapper to allocate Tx resources | |
1446 | * (Descriptors) for all queues | |
1447 | * @adapter: board private structure | |
1448 | * | |
581d708e MC |
1449 | * Return 0 on success, negative on failure |
1450 | **/ | |
1451 | ||
64798845 | 1452 | int e1000_setup_all_tx_resources(struct e1000_adapter *adapter) |
581d708e MC |
1453 | { |
1454 | int i, err = 0; | |
1455 | ||
f56799ea | 1456 | for (i = 0; i < adapter->num_tx_queues; i++) { |
581d708e MC |
1457 | err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
1458 | if (err) { | |
1459 | DPRINTK(PROBE, ERR, | |
1460 | "Allocation for Tx Queue %u failed\n", i); | |
3fbbc72e VA |
1461 | for (i-- ; i >= 0; i--) |
1462 | e1000_free_tx_resources(adapter, | |
1463 | &adapter->tx_ring[i]); | |
581d708e MC |
1464 | break; |
1465 | } | |
1466 | } | |
1467 | ||
1468 | return err; | |
1469 | } | |
1470 | ||
1da177e4 LT |
1471 | /** |
1472 | * e1000_configure_tx - Configure 8254x Transmit Unit after Reset | |
1473 | * @adapter: board private structure | |
1474 | * | |
1475 | * Configure the Tx unit of the MAC after a reset. | |
1476 | **/ | |
1477 | ||
64798845 | 1478 | static void e1000_configure_tx(struct e1000_adapter *adapter) |
1da177e4 | 1479 | { |
406874a7 | 1480 | u64 tdba; |
581d708e | 1481 | struct e1000_hw *hw = &adapter->hw; |
1532ecea | 1482 | u32 tdlen, tctl, tipg; |
406874a7 | 1483 | u32 ipgr1, ipgr2; |
1da177e4 LT |
1484 | |
1485 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1486 | ||
f56799ea | 1487 | switch (adapter->num_tx_queues) { |
24025e4e MC |
1488 | case 1: |
1489 | default: | |
581d708e MC |
1490 | tdba = adapter->tx_ring[0].dma; |
1491 | tdlen = adapter->tx_ring[0].count * | |
1492 | sizeof(struct e1000_tx_desc); | |
1dc32918 JP |
1493 | ew32(TDLEN, tdlen); |
1494 | ew32(TDBAH, (tdba >> 32)); | |
1495 | ew32(TDBAL, (tdba & 0x00000000ffffffffULL)); | |
1496 | ew32(TDT, 0); | |
1497 | ew32(TDH, 0); | |
6a951698 AK |
1498 | adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH); |
1499 | adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT); | |
24025e4e MC |
1500 | break; |
1501 | } | |
1da177e4 LT |
1502 | |
1503 | /* Set the default values for the Tx Inter Packet Gap timer */ | |
1532ecea | 1504 | if ((hw->media_type == e1000_media_type_fiber || |
d89b6c67 | 1505 | hw->media_type == e1000_media_type_internal_serdes)) |
0fadb059 JK |
1506 | tipg = DEFAULT_82543_TIPG_IPGT_FIBER; |
1507 | else | |
1508 | tipg = DEFAULT_82543_TIPG_IPGT_COPPER; | |
1509 | ||
581d708e | 1510 | switch (hw->mac_type) { |
1da177e4 LT |
1511 | case e1000_82542_rev2_0: |
1512 | case e1000_82542_rev2_1: | |
1513 | tipg = DEFAULT_82542_TIPG_IPGT; | |
0fadb059 JK |
1514 | ipgr1 = DEFAULT_82542_TIPG_IPGR1; |
1515 | ipgr2 = DEFAULT_82542_TIPG_IPGR2; | |
1da177e4 LT |
1516 | break; |
1517 | default: | |
0fadb059 JK |
1518 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
1519 | ipgr2 = DEFAULT_82543_TIPG_IPGR2; | |
1520 | break; | |
1da177e4 | 1521 | } |
0fadb059 JK |
1522 | tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; |
1523 | tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; | |
1dc32918 | 1524 | ew32(TIPG, tipg); |
1da177e4 LT |
1525 | |
1526 | /* Set the Tx Interrupt Delay register */ | |
1527 | ||
1dc32918 | 1528 | ew32(TIDV, adapter->tx_int_delay); |
581d708e | 1529 | if (hw->mac_type >= e1000_82540) |
1dc32918 | 1530 | ew32(TADV, adapter->tx_abs_int_delay); |
1da177e4 LT |
1531 | |
1532 | /* Program the Transmit Control Register */ | |
1533 | ||
1dc32918 | 1534 | tctl = er32(TCTL); |
1da177e4 | 1535 | tctl &= ~E1000_TCTL_CT; |
7e6c9861 | 1536 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
1da177e4 LT |
1537 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
1538 | ||
581d708e | 1539 | e1000_config_collision_dist(hw); |
1da177e4 LT |
1540 | |
1541 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
6a042dab JB |
1542 | adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; |
1543 | ||
1544 | /* only set IDE if we are delaying interrupts using the timers */ | |
1545 | if (adapter->tx_int_delay) | |
1546 | adapter->txd_cmd |= E1000_TXD_CMD_IDE; | |
1da177e4 | 1547 | |
581d708e | 1548 | if (hw->mac_type < e1000_82543) |
1da177e4 LT |
1549 | adapter->txd_cmd |= E1000_TXD_CMD_RPS; |
1550 | else | |
1551 | adapter->txd_cmd |= E1000_TXD_CMD_RS; | |
1552 | ||
1553 | /* Cache if we're 82544 running in PCI-X because we'll | |
1554 | * need this to apply a workaround later in the send path. */ | |
581d708e MC |
1555 | if (hw->mac_type == e1000_82544 && |
1556 | hw->bus_type == e1000_bus_type_pcix) | |
1da177e4 | 1557 | adapter->pcix_82544 = 1; |
7e6c9861 | 1558 | |
1dc32918 | 1559 | ew32(TCTL, tctl); |
7e6c9861 | 1560 | |
1da177e4 LT |
1561 | } |
1562 | ||
1563 | /** | |
1564 | * e1000_setup_rx_resources - allocate Rx resources (Descriptors) | |
1565 | * @adapter: board private structure | |
581d708e | 1566 | * @rxdr: rx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1567 | * |
1568 | * Returns 0 on success, negative on failure | |
1569 | **/ | |
1570 | ||
64798845 JP |
1571 | static int e1000_setup_rx_resources(struct e1000_adapter *adapter, |
1572 | struct e1000_rx_ring *rxdr) | |
1da177e4 | 1573 | { |
1da177e4 | 1574 | struct pci_dev *pdev = adapter->pdev; |
2d7edb92 | 1575 | int size, desc_len; |
1da177e4 LT |
1576 | |
1577 | size = sizeof(struct e1000_buffer) * rxdr->count; | |
cd94dd0b | 1578 | rxdr->buffer_info = vmalloc(size); |
581d708e | 1579 | if (!rxdr->buffer_info) { |
2648345f MC |
1580 | DPRINTK(PROBE, ERR, |
1581 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1da177e4 LT |
1582 | return -ENOMEM; |
1583 | } | |
1584 | memset(rxdr->buffer_info, 0, size); | |
1585 | ||
1532ecea | 1586 | desc_len = sizeof(struct e1000_rx_desc); |
2d7edb92 | 1587 | |
1da177e4 LT |
1588 | /* Round up to nearest 4K */ |
1589 | ||
2d7edb92 | 1590 | rxdr->size = rxdr->count * desc_len; |
9099cfb9 | 1591 | rxdr->size = ALIGN(rxdr->size, 4096); |
1da177e4 LT |
1592 | |
1593 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); | |
1594 | ||
581d708e MC |
1595 | if (!rxdr->desc) { |
1596 | DPRINTK(PROBE, ERR, | |
1597 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1da177e4 | 1598 | setup_rx_desc_die: |
1da177e4 LT |
1599 | vfree(rxdr->buffer_info); |
1600 | return -ENOMEM; | |
1601 | } | |
1602 | ||
2648345f | 1603 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1604 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
1605 | void *olddesc = rxdr->desc; | |
1606 | dma_addr_t olddma = rxdr->dma; | |
2648345f MC |
1607 | DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes " |
1608 | "at %p\n", rxdr->size, rxdr->desc); | |
1609 | /* Try again, without freeing the previous */ | |
1da177e4 | 1610 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); |
2648345f | 1611 | /* Failed allocation, critical failure */ |
581d708e | 1612 | if (!rxdr->desc) { |
1da177e4 | 1613 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
581d708e MC |
1614 | DPRINTK(PROBE, ERR, |
1615 | "Unable to allocate memory " | |
1616 | "for the receive descriptor ring\n"); | |
1da177e4 LT |
1617 | goto setup_rx_desc_die; |
1618 | } | |
1619 | ||
1620 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { | |
1621 | /* give up */ | |
2648345f MC |
1622 | pci_free_consistent(pdev, rxdr->size, rxdr->desc, |
1623 | rxdr->dma); | |
1da177e4 | 1624 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
2648345f MC |
1625 | DPRINTK(PROBE, ERR, |
1626 | "Unable to allocate aligned memory " | |
1627 | "for the receive descriptor ring\n"); | |
581d708e | 1628 | goto setup_rx_desc_die; |
1da177e4 | 1629 | } else { |
2648345f | 1630 | /* Free old allocation, new allocation was successful */ |
1da177e4 LT |
1631 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
1632 | } | |
1633 | } | |
1634 | memset(rxdr->desc, 0, rxdr->size); | |
1635 | ||
1636 | rxdr->next_to_clean = 0; | |
1637 | rxdr->next_to_use = 0; | |
edbbb3ca | 1638 | rxdr->rx_skb_top = NULL; |
1da177e4 LT |
1639 | |
1640 | return 0; | |
1641 | } | |
1642 | ||
581d708e MC |
1643 | /** |
1644 | * e1000_setup_all_rx_resources - wrapper to allocate Rx resources | |
1645 | * (Descriptors) for all queues | |
1646 | * @adapter: board private structure | |
1647 | * | |
581d708e MC |
1648 | * Return 0 on success, negative on failure |
1649 | **/ | |
1650 | ||
64798845 | 1651 | int e1000_setup_all_rx_resources(struct e1000_adapter *adapter) |
581d708e MC |
1652 | { |
1653 | int i, err = 0; | |
1654 | ||
f56799ea | 1655 | for (i = 0; i < adapter->num_rx_queues; i++) { |
581d708e MC |
1656 | err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
1657 | if (err) { | |
1658 | DPRINTK(PROBE, ERR, | |
1659 | "Allocation for Rx Queue %u failed\n", i); | |
3fbbc72e VA |
1660 | for (i-- ; i >= 0; i--) |
1661 | e1000_free_rx_resources(adapter, | |
1662 | &adapter->rx_ring[i]); | |
581d708e MC |
1663 | break; |
1664 | } | |
1665 | } | |
1666 | ||
1667 | return err; | |
1668 | } | |
1669 | ||
1da177e4 | 1670 | /** |
2648345f | 1671 | * e1000_setup_rctl - configure the receive control registers |
1da177e4 LT |
1672 | * @adapter: Board private structure |
1673 | **/ | |
64798845 | 1674 | static void e1000_setup_rctl(struct e1000_adapter *adapter) |
1da177e4 | 1675 | { |
1dc32918 | 1676 | struct e1000_hw *hw = &adapter->hw; |
630b25cd | 1677 | u32 rctl; |
1da177e4 | 1678 | |
1dc32918 | 1679 | rctl = er32(RCTL); |
1da177e4 LT |
1680 | |
1681 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
1682 | ||
1683 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | | |
1684 | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | | |
1dc32918 | 1685 | (hw->mc_filter_type << E1000_RCTL_MO_SHIFT); |
1da177e4 | 1686 | |
1dc32918 | 1687 | if (hw->tbi_compatibility_on == 1) |
1da177e4 LT |
1688 | rctl |= E1000_RCTL_SBP; |
1689 | else | |
1690 | rctl &= ~E1000_RCTL_SBP; | |
1691 | ||
2d7edb92 MC |
1692 | if (adapter->netdev->mtu <= ETH_DATA_LEN) |
1693 | rctl &= ~E1000_RCTL_LPE; | |
1694 | else | |
1695 | rctl |= E1000_RCTL_LPE; | |
1696 | ||
1da177e4 | 1697 | /* Setup buffer sizes */ |
9e2feace AK |
1698 | rctl &= ~E1000_RCTL_SZ_4096; |
1699 | rctl |= E1000_RCTL_BSEX; | |
1700 | switch (adapter->rx_buffer_len) { | |
a1415ee6 JK |
1701 | case E1000_RXBUFFER_2048: |
1702 | default: | |
1703 | rctl |= E1000_RCTL_SZ_2048; | |
1704 | rctl &= ~E1000_RCTL_BSEX; | |
1705 | break; | |
1706 | case E1000_RXBUFFER_4096: | |
1707 | rctl |= E1000_RCTL_SZ_4096; | |
1708 | break; | |
1709 | case E1000_RXBUFFER_8192: | |
1710 | rctl |= E1000_RCTL_SZ_8192; | |
1711 | break; | |
1712 | case E1000_RXBUFFER_16384: | |
1713 | rctl |= E1000_RCTL_SZ_16384; | |
1714 | break; | |
2d7edb92 MC |
1715 | } |
1716 | ||
1dc32918 | 1717 | ew32(RCTL, rctl); |
1da177e4 LT |
1718 | } |
1719 | ||
1720 | /** | |
1721 | * e1000_configure_rx - Configure 8254x Receive Unit after Reset | |
1722 | * @adapter: board private structure | |
1723 | * | |
1724 | * Configure the Rx unit of the MAC after a reset. | |
1725 | **/ | |
1726 | ||
64798845 | 1727 | static void e1000_configure_rx(struct e1000_adapter *adapter) |
1da177e4 | 1728 | { |
406874a7 | 1729 | u64 rdba; |
581d708e | 1730 | struct e1000_hw *hw = &adapter->hw; |
1532ecea | 1731 | u32 rdlen, rctl, rxcsum; |
2d7edb92 | 1732 | |
edbbb3ca JB |
1733 | if (adapter->netdev->mtu > ETH_DATA_LEN) { |
1734 | rdlen = adapter->rx_ring[0].count * | |
1735 | sizeof(struct e1000_rx_desc); | |
1736 | adapter->clean_rx = e1000_clean_jumbo_rx_irq; | |
1737 | adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers; | |
1738 | } else { | |
1739 | rdlen = adapter->rx_ring[0].count * | |
1740 | sizeof(struct e1000_rx_desc); | |
1741 | adapter->clean_rx = e1000_clean_rx_irq; | |
1742 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers; | |
1743 | } | |
1da177e4 LT |
1744 | |
1745 | /* disable receives while setting up the descriptors */ | |
1dc32918 JP |
1746 | rctl = er32(RCTL); |
1747 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
1da177e4 LT |
1748 | |
1749 | /* set the Receive Delay Timer Register */ | |
1dc32918 | 1750 | ew32(RDTR, adapter->rx_int_delay); |
1da177e4 | 1751 | |
581d708e | 1752 | if (hw->mac_type >= e1000_82540) { |
1dc32918 | 1753 | ew32(RADV, adapter->rx_abs_int_delay); |
835bb129 | 1754 | if (adapter->itr_setting != 0) |
1dc32918 | 1755 | ew32(ITR, 1000000000 / (adapter->itr * 256)); |
1da177e4 LT |
1756 | } |
1757 | ||
581d708e MC |
1758 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
1759 | * the Base and Length of the Rx Descriptor Ring */ | |
f56799ea | 1760 | switch (adapter->num_rx_queues) { |
24025e4e MC |
1761 | case 1: |
1762 | default: | |
581d708e | 1763 | rdba = adapter->rx_ring[0].dma; |
1dc32918 JP |
1764 | ew32(RDLEN, rdlen); |
1765 | ew32(RDBAH, (rdba >> 32)); | |
1766 | ew32(RDBAL, (rdba & 0x00000000ffffffffULL)); | |
1767 | ew32(RDT, 0); | |
1768 | ew32(RDH, 0); | |
6a951698 AK |
1769 | adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH); |
1770 | adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT); | |
581d708e | 1771 | break; |
24025e4e MC |
1772 | } |
1773 | ||
1da177e4 | 1774 | /* Enable 82543 Receive Checksum Offload for TCP and UDP */ |
581d708e | 1775 | if (hw->mac_type >= e1000_82543) { |
1dc32918 | 1776 | rxcsum = er32(RXCSUM); |
630b25cd | 1777 | if (adapter->rx_csum) |
2d7edb92 | 1778 | rxcsum |= E1000_RXCSUM_TUOFL; |
630b25cd | 1779 | else |
2d7edb92 | 1780 | /* don't need to clear IPPCSE as it defaults to 0 */ |
630b25cd | 1781 | rxcsum &= ~E1000_RXCSUM_TUOFL; |
1dc32918 | 1782 | ew32(RXCSUM, rxcsum); |
1da177e4 LT |
1783 | } |
1784 | ||
1785 | /* Enable Receives */ | |
1dc32918 | 1786 | ew32(RCTL, rctl); |
1da177e4 LT |
1787 | } |
1788 | ||
1789 | /** | |
581d708e | 1790 | * e1000_free_tx_resources - Free Tx Resources per Queue |
1da177e4 | 1791 | * @adapter: board private structure |
581d708e | 1792 | * @tx_ring: Tx descriptor ring for a specific queue |
1da177e4 LT |
1793 | * |
1794 | * Free all transmit software resources | |
1795 | **/ | |
1796 | ||
64798845 JP |
1797 | static void e1000_free_tx_resources(struct e1000_adapter *adapter, |
1798 | struct e1000_tx_ring *tx_ring) | |
1da177e4 LT |
1799 | { |
1800 | struct pci_dev *pdev = adapter->pdev; | |
1801 | ||
581d708e | 1802 | e1000_clean_tx_ring(adapter, tx_ring); |
1da177e4 | 1803 | |
581d708e MC |
1804 | vfree(tx_ring->buffer_info); |
1805 | tx_ring->buffer_info = NULL; | |
1da177e4 | 1806 | |
581d708e | 1807 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); |
1da177e4 | 1808 | |
581d708e MC |
1809 | tx_ring->desc = NULL; |
1810 | } | |
1811 | ||
1812 | /** | |
1813 | * e1000_free_all_tx_resources - Free Tx Resources for All Queues | |
1814 | * @adapter: board private structure | |
1815 | * | |
1816 | * Free all transmit software resources | |
1817 | **/ | |
1818 | ||
64798845 | 1819 | void e1000_free_all_tx_resources(struct e1000_adapter *adapter) |
581d708e MC |
1820 | { |
1821 | int i; | |
1822 | ||
f56799ea | 1823 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 1824 | e1000_free_tx_resources(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
1825 | } |
1826 | ||
64798845 JP |
1827 | static void e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, |
1828 | struct e1000_buffer *buffer_info) | |
1da177e4 | 1829 | { |
602c0554 AD |
1830 | if (buffer_info->dma) { |
1831 | if (buffer_info->mapped_as_page) | |
1832 | pci_unmap_page(adapter->pdev, buffer_info->dma, | |
1833 | buffer_info->length, PCI_DMA_TODEVICE); | |
1834 | else | |
1835 | pci_unmap_single(adapter->pdev, buffer_info->dma, | |
1836 | buffer_info->length, | |
1837 | PCI_DMA_TODEVICE); | |
1838 | buffer_info->dma = 0; | |
1839 | } | |
a9ebadd6 | 1840 | if (buffer_info->skb) { |
1da177e4 | 1841 | dev_kfree_skb_any(buffer_info->skb); |
a9ebadd6 JB |
1842 | buffer_info->skb = NULL; |
1843 | } | |
37e73df8 | 1844 | buffer_info->time_stamp = 0; |
a9ebadd6 | 1845 | /* buffer_info must be completely set up in the transmit path */ |
1da177e4 LT |
1846 | } |
1847 | ||
1848 | /** | |
1849 | * e1000_clean_tx_ring - Free Tx Buffers | |
1850 | * @adapter: board private structure | |
581d708e | 1851 | * @tx_ring: ring to be cleaned |
1da177e4 LT |
1852 | **/ |
1853 | ||
64798845 JP |
1854 | static void e1000_clean_tx_ring(struct e1000_adapter *adapter, |
1855 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 1856 | { |
1dc32918 | 1857 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
1858 | struct e1000_buffer *buffer_info; |
1859 | unsigned long size; | |
1860 | unsigned int i; | |
1861 | ||
1862 | /* Free all the Tx ring sk_buffs */ | |
1863 | ||
96838a40 | 1864 | for (i = 0; i < tx_ring->count; i++) { |
1da177e4 LT |
1865 | buffer_info = &tx_ring->buffer_info[i]; |
1866 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); | |
1867 | } | |
1868 | ||
1869 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
1870 | memset(tx_ring->buffer_info, 0, size); | |
1871 | ||
1872 | /* Zero out the descriptor ring */ | |
1873 | ||
1874 | memset(tx_ring->desc, 0, tx_ring->size); | |
1875 | ||
1876 | tx_ring->next_to_use = 0; | |
1877 | tx_ring->next_to_clean = 0; | |
fd803241 | 1878 | tx_ring->last_tx_tso = 0; |
1da177e4 | 1879 | |
1dc32918 JP |
1880 | writel(0, hw->hw_addr + tx_ring->tdh); |
1881 | writel(0, hw->hw_addr + tx_ring->tdt); | |
581d708e MC |
1882 | } |
1883 | ||
1884 | /** | |
1885 | * e1000_clean_all_tx_rings - Free Tx Buffers for all queues | |
1886 | * @adapter: board private structure | |
1887 | **/ | |
1888 | ||
64798845 | 1889 | static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter) |
581d708e MC |
1890 | { |
1891 | int i; | |
1892 | ||
f56799ea | 1893 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 1894 | e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
1895 | } |
1896 | ||
1897 | /** | |
1898 | * e1000_free_rx_resources - Free Rx Resources | |
1899 | * @adapter: board private structure | |
581d708e | 1900 | * @rx_ring: ring to clean the resources from |
1da177e4 LT |
1901 | * |
1902 | * Free all receive software resources | |
1903 | **/ | |
1904 | ||
64798845 JP |
1905 | static void e1000_free_rx_resources(struct e1000_adapter *adapter, |
1906 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 1907 | { |
1da177e4 LT |
1908 | struct pci_dev *pdev = adapter->pdev; |
1909 | ||
581d708e | 1910 | e1000_clean_rx_ring(adapter, rx_ring); |
1da177e4 LT |
1911 | |
1912 | vfree(rx_ring->buffer_info); | |
1913 | rx_ring->buffer_info = NULL; | |
1914 | ||
1915 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
1916 | ||
1917 | rx_ring->desc = NULL; | |
1918 | } | |
1919 | ||
1920 | /** | |
581d708e | 1921 | * e1000_free_all_rx_resources - Free Rx Resources for All Queues |
1da177e4 | 1922 | * @adapter: board private structure |
581d708e MC |
1923 | * |
1924 | * Free all receive software resources | |
1925 | **/ | |
1926 | ||
64798845 | 1927 | void e1000_free_all_rx_resources(struct e1000_adapter *adapter) |
581d708e MC |
1928 | { |
1929 | int i; | |
1930 | ||
f56799ea | 1931 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e MC |
1932 | e1000_free_rx_resources(adapter, &adapter->rx_ring[i]); |
1933 | } | |
1934 | ||
1935 | /** | |
1936 | * e1000_clean_rx_ring - Free Rx Buffers per Queue | |
1937 | * @adapter: board private structure | |
1938 | * @rx_ring: ring to free buffers from | |
1da177e4 LT |
1939 | **/ |
1940 | ||
64798845 JP |
1941 | static void e1000_clean_rx_ring(struct e1000_adapter *adapter, |
1942 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 1943 | { |
1dc32918 | 1944 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
1945 | struct e1000_buffer *buffer_info; |
1946 | struct pci_dev *pdev = adapter->pdev; | |
1947 | unsigned long size; | |
630b25cd | 1948 | unsigned int i; |
1da177e4 LT |
1949 | |
1950 | /* Free all the Rx ring sk_buffs */ | |
96838a40 | 1951 | for (i = 0; i < rx_ring->count; i++) { |
1da177e4 | 1952 | buffer_info = &rx_ring->buffer_info[i]; |
edbbb3ca JB |
1953 | if (buffer_info->dma && |
1954 | adapter->clean_rx == e1000_clean_rx_irq) { | |
1955 | pci_unmap_single(pdev, buffer_info->dma, | |
1956 | buffer_info->length, | |
1957 | PCI_DMA_FROMDEVICE); | |
1958 | } else if (buffer_info->dma && | |
1959 | adapter->clean_rx == e1000_clean_jumbo_rx_irq) { | |
1960 | pci_unmap_page(pdev, buffer_info->dma, | |
1961 | buffer_info->length, | |
1962 | PCI_DMA_FROMDEVICE); | |
679be3ba | 1963 | } |
1da177e4 | 1964 | |
679be3ba | 1965 | buffer_info->dma = 0; |
edbbb3ca JB |
1966 | if (buffer_info->page) { |
1967 | put_page(buffer_info->page); | |
1968 | buffer_info->page = NULL; | |
1969 | } | |
679be3ba | 1970 | if (buffer_info->skb) { |
1da177e4 LT |
1971 | dev_kfree_skb(buffer_info->skb); |
1972 | buffer_info->skb = NULL; | |
997f5cbd | 1973 | } |
1da177e4 LT |
1974 | } |
1975 | ||
edbbb3ca JB |
1976 | /* there also may be some cached data from a chained receive */ |
1977 | if (rx_ring->rx_skb_top) { | |
1978 | dev_kfree_skb(rx_ring->rx_skb_top); | |
1979 | rx_ring->rx_skb_top = NULL; | |
1980 | } | |
1981 | ||
1da177e4 LT |
1982 | size = sizeof(struct e1000_buffer) * rx_ring->count; |
1983 | memset(rx_ring->buffer_info, 0, size); | |
1984 | ||
1985 | /* Zero out the descriptor ring */ | |
1da177e4 LT |
1986 | memset(rx_ring->desc, 0, rx_ring->size); |
1987 | ||
1988 | rx_ring->next_to_clean = 0; | |
1989 | rx_ring->next_to_use = 0; | |
1990 | ||
1dc32918 JP |
1991 | writel(0, hw->hw_addr + rx_ring->rdh); |
1992 | writel(0, hw->hw_addr + rx_ring->rdt); | |
581d708e MC |
1993 | } |
1994 | ||
1995 | /** | |
1996 | * e1000_clean_all_rx_rings - Free Rx Buffers for all queues | |
1997 | * @adapter: board private structure | |
1998 | **/ | |
1999 | ||
64798845 | 2000 | static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter) |
581d708e MC |
2001 | { |
2002 | int i; | |
2003 | ||
f56799ea | 2004 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e | 2005 | e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]); |
1da177e4 LT |
2006 | } |
2007 | ||
2008 | /* The 82542 2.0 (revision 2) needs to have the receive unit in reset | |
2009 | * and memory write and invalidate disabled for certain operations | |
2010 | */ | |
64798845 | 2011 | static void e1000_enter_82542_rst(struct e1000_adapter *adapter) |
1da177e4 | 2012 | { |
1dc32918 | 2013 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 2014 | struct net_device *netdev = adapter->netdev; |
406874a7 | 2015 | u32 rctl; |
1da177e4 | 2016 | |
1dc32918 | 2017 | e1000_pci_clear_mwi(hw); |
1da177e4 | 2018 | |
1dc32918 | 2019 | rctl = er32(RCTL); |
1da177e4 | 2020 | rctl |= E1000_RCTL_RST; |
1dc32918 JP |
2021 | ew32(RCTL, rctl); |
2022 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
2023 | mdelay(5); |
2024 | ||
96838a40 | 2025 | if (netif_running(netdev)) |
581d708e | 2026 | e1000_clean_all_rx_rings(adapter); |
1da177e4 LT |
2027 | } |
2028 | ||
64798845 | 2029 | static void e1000_leave_82542_rst(struct e1000_adapter *adapter) |
1da177e4 | 2030 | { |
1dc32918 | 2031 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 2032 | struct net_device *netdev = adapter->netdev; |
406874a7 | 2033 | u32 rctl; |
1da177e4 | 2034 | |
1dc32918 | 2035 | rctl = er32(RCTL); |
1da177e4 | 2036 | rctl &= ~E1000_RCTL_RST; |
1dc32918 JP |
2037 | ew32(RCTL, rctl); |
2038 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
2039 | mdelay(5); |
2040 | ||
1dc32918 JP |
2041 | if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE) |
2042 | e1000_pci_set_mwi(hw); | |
1da177e4 | 2043 | |
96838a40 | 2044 | if (netif_running(netdev)) { |
72d64a43 JK |
2045 | /* No need to loop, because 82542 supports only 1 queue */ |
2046 | struct e1000_rx_ring *ring = &adapter->rx_ring[0]; | |
7c4d3367 | 2047 | e1000_configure_rx(adapter); |
72d64a43 | 2048 | adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring)); |
1da177e4 LT |
2049 | } |
2050 | } | |
2051 | ||
2052 | /** | |
2053 | * e1000_set_mac - Change the Ethernet Address of the NIC | |
2054 | * @netdev: network interface device structure | |
2055 | * @p: pointer to an address structure | |
2056 | * | |
2057 | * Returns 0 on success, negative on failure | |
2058 | **/ | |
2059 | ||
64798845 | 2060 | static int e1000_set_mac(struct net_device *netdev, void *p) |
1da177e4 | 2061 | { |
60490fe0 | 2062 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 2063 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
2064 | struct sockaddr *addr = p; |
2065 | ||
96838a40 | 2066 | if (!is_valid_ether_addr(addr->sa_data)) |
1da177e4 LT |
2067 | return -EADDRNOTAVAIL; |
2068 | ||
2069 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2070 | ||
1dc32918 | 2071 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2072 | e1000_enter_82542_rst(adapter); |
2073 | ||
2074 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
1dc32918 | 2075 | memcpy(hw->mac_addr, addr->sa_data, netdev->addr_len); |
1da177e4 | 2076 | |
1dc32918 | 2077 | e1000_rar_set(hw, hw->mac_addr, 0); |
1da177e4 | 2078 | |
1dc32918 | 2079 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2080 | e1000_leave_82542_rst(adapter); |
2081 | ||
2082 | return 0; | |
2083 | } | |
2084 | ||
2085 | /** | |
db0ce50d | 2086 | * e1000_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set |
1da177e4 LT |
2087 | * @netdev: network interface device structure |
2088 | * | |
db0ce50d PM |
2089 | * The set_rx_mode entry point is called whenever the unicast or multicast |
2090 | * address lists or the network interface flags are updated. This routine is | |
2091 | * responsible for configuring the hardware for proper unicast, multicast, | |
1da177e4 LT |
2092 | * promiscuous mode, and all-multi behavior. |
2093 | **/ | |
2094 | ||
64798845 | 2095 | static void e1000_set_rx_mode(struct net_device *netdev) |
1da177e4 | 2096 | { |
60490fe0 | 2097 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 2098 | struct e1000_hw *hw = &adapter->hw; |
ccffad25 JP |
2099 | struct netdev_hw_addr *ha; |
2100 | bool use_uc = false; | |
db0ce50d | 2101 | struct dev_addr_list *mc_ptr; |
406874a7 JP |
2102 | u32 rctl; |
2103 | u32 hash_value; | |
868d5309 | 2104 | int i, rar_entries = E1000_RAR_ENTRIES; |
1532ecea | 2105 | int mta_reg_count = E1000_NUM_MTA_REGISTERS; |
81c52285 JB |
2106 | u32 *mcarray = kcalloc(mta_reg_count, sizeof(u32), GFP_ATOMIC); |
2107 | ||
2108 | if (!mcarray) { | |
2109 | DPRINTK(PROBE, ERR, "memory allocation failed\n"); | |
2110 | return; | |
2111 | } | |
cd94dd0b | 2112 | |
2648345f MC |
2113 | /* Check for Promiscuous and All Multicast modes */ |
2114 | ||
1dc32918 | 2115 | rctl = er32(RCTL); |
1da177e4 | 2116 | |
96838a40 | 2117 | if (netdev->flags & IFF_PROMISC) { |
1da177e4 | 2118 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
746b9f02 | 2119 | rctl &= ~E1000_RCTL_VFE; |
1da177e4 | 2120 | } else { |
1532ecea | 2121 | if (netdev->flags & IFF_ALLMULTI) |
746b9f02 | 2122 | rctl |= E1000_RCTL_MPE; |
1532ecea | 2123 | else |
746b9f02 | 2124 | rctl &= ~E1000_RCTL_MPE; |
1532ecea JB |
2125 | /* Enable VLAN filter if there is a VLAN */ |
2126 | if (adapter->vlgrp) | |
2127 | rctl |= E1000_RCTL_VFE; | |
db0ce50d PM |
2128 | } |
2129 | ||
31278e71 | 2130 | if (netdev->uc.count > rar_entries - 1) { |
db0ce50d PM |
2131 | rctl |= E1000_RCTL_UPE; |
2132 | } else if (!(netdev->flags & IFF_PROMISC)) { | |
2133 | rctl &= ~E1000_RCTL_UPE; | |
ccffad25 | 2134 | use_uc = true; |
1da177e4 LT |
2135 | } |
2136 | ||
1dc32918 | 2137 | ew32(RCTL, rctl); |
1da177e4 LT |
2138 | |
2139 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2140 | ||
96838a40 | 2141 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2142 | e1000_enter_82542_rst(adapter); |
2143 | ||
db0ce50d PM |
2144 | /* load the first 14 addresses into the exact filters 1-14. Unicast |
2145 | * addresses take precedence to avoid disabling unicast filtering | |
2146 | * when possible. | |
2147 | * | |
1da177e4 LT |
2148 | * RAR 0 is used for the station MAC adddress |
2149 | * if there are not 14 addresses, go ahead and clear the filters | |
2150 | */ | |
ccffad25 JP |
2151 | i = 1; |
2152 | if (use_uc) | |
31278e71 | 2153 | list_for_each_entry(ha, &netdev->uc.list, list) { |
ccffad25 JP |
2154 | if (i == rar_entries) |
2155 | break; | |
2156 | e1000_rar_set(hw, ha->addr, i++); | |
2157 | } | |
2158 | ||
2159 | WARN_ON(i == rar_entries); | |
2160 | ||
1da177e4 LT |
2161 | mc_ptr = netdev->mc_list; |
2162 | ||
ccffad25 JP |
2163 | for (; i < rar_entries; i++) { |
2164 | if (mc_ptr) { | |
db0ce50d | 2165 | e1000_rar_set(hw, mc_ptr->da_addr, i); |
1da177e4 LT |
2166 | mc_ptr = mc_ptr->next; |
2167 | } else { | |
2168 | E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); | |
1dc32918 | 2169 | E1000_WRITE_FLUSH(); |
1da177e4 | 2170 | E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); |
1dc32918 | 2171 | E1000_WRITE_FLUSH(); |
1da177e4 LT |
2172 | } |
2173 | } | |
2174 | ||
1da177e4 LT |
2175 | /* load any remaining addresses into the hash table */ |
2176 | ||
96838a40 | 2177 | for (; mc_ptr; mc_ptr = mc_ptr->next) { |
81c52285 | 2178 | u32 hash_reg, hash_bit, mta; |
db0ce50d | 2179 | hash_value = e1000_hash_mc_addr(hw, mc_ptr->da_addr); |
81c52285 JB |
2180 | hash_reg = (hash_value >> 5) & 0x7F; |
2181 | hash_bit = hash_value & 0x1F; | |
2182 | mta = (1 << hash_bit); | |
2183 | mcarray[hash_reg] |= mta; | |
1da177e4 LT |
2184 | } |
2185 | ||
81c52285 JB |
2186 | /* write the hash table completely, write from bottom to avoid |
2187 | * both stupid write combining chipsets, and flushing each write */ | |
2188 | for (i = mta_reg_count - 1; i >= 0 ; i--) { | |
2189 | /* | |
2190 | * If we are on an 82544 has an errata where writing odd | |
2191 | * offsets overwrites the previous even offset, but writing | |
2192 | * backwards over the range solves the issue by always | |
2193 | * writing the odd offset first | |
2194 | */ | |
2195 | E1000_WRITE_REG_ARRAY(hw, MTA, i, mcarray[i]); | |
2196 | } | |
2197 | E1000_WRITE_FLUSH(); | |
2198 | ||
96838a40 | 2199 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 | 2200 | e1000_leave_82542_rst(adapter); |
81c52285 JB |
2201 | |
2202 | kfree(mcarray); | |
1da177e4 LT |
2203 | } |
2204 | ||
2205 | /* Need to wait a few seconds after link up to get diagnostic information from | |
2206 | * the phy */ | |
2207 | ||
64798845 | 2208 | static void e1000_update_phy_info(unsigned long data) |
1da177e4 | 2209 | { |
e982f17c | 2210 | struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
1dc32918 JP |
2211 | struct e1000_hw *hw = &adapter->hw; |
2212 | e1000_phy_get_info(hw, &adapter->phy_info); | |
1da177e4 LT |
2213 | } |
2214 | ||
2215 | /** | |
2216 | * e1000_82547_tx_fifo_stall - Timer Call-back | |
2217 | * @data: pointer to adapter cast into an unsigned long | |
2218 | **/ | |
2219 | ||
64798845 | 2220 | static void e1000_82547_tx_fifo_stall(unsigned long data) |
1da177e4 | 2221 | { |
e982f17c | 2222 | struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
1dc32918 | 2223 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 2224 | struct net_device *netdev = adapter->netdev; |
406874a7 | 2225 | u32 tctl; |
1da177e4 | 2226 | |
96838a40 | 2227 | if (atomic_read(&adapter->tx_fifo_stall)) { |
1dc32918 JP |
2228 | if ((er32(TDT) == er32(TDH)) && |
2229 | (er32(TDFT) == er32(TDFH)) && | |
2230 | (er32(TDFTS) == er32(TDFHS))) { | |
2231 | tctl = er32(TCTL); | |
2232 | ew32(TCTL, tctl & ~E1000_TCTL_EN); | |
2233 | ew32(TDFT, adapter->tx_head_addr); | |
2234 | ew32(TDFH, adapter->tx_head_addr); | |
2235 | ew32(TDFTS, adapter->tx_head_addr); | |
2236 | ew32(TDFHS, adapter->tx_head_addr); | |
2237 | ew32(TCTL, tctl); | |
2238 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
2239 | |
2240 | adapter->tx_fifo_head = 0; | |
2241 | atomic_set(&adapter->tx_fifo_stall, 0); | |
2242 | netif_wake_queue(netdev); | |
baa34745 | 2243 | } else if (!test_bit(__E1000_DOWN, &adapter->flags)) { |
1da177e4 LT |
2244 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); |
2245 | } | |
2246 | } | |
2247 | } | |
2248 | ||
be0f0719 JB |
2249 | static bool e1000_has_link(struct e1000_adapter *adapter) |
2250 | { | |
2251 | struct e1000_hw *hw = &adapter->hw; | |
2252 | bool link_active = false; | |
be0f0719 JB |
2253 | |
2254 | /* get_link_status is set on LSC (link status) interrupt or | |
2255 | * rx sequence error interrupt. get_link_status will stay | |
2256 | * false until the e1000_check_for_link establishes link | |
2257 | * for copper adapters ONLY | |
2258 | */ | |
2259 | switch (hw->media_type) { | |
2260 | case e1000_media_type_copper: | |
2261 | if (hw->get_link_status) { | |
120a5d0d | 2262 | e1000_check_for_link(hw); |
be0f0719 JB |
2263 | link_active = !hw->get_link_status; |
2264 | } else { | |
2265 | link_active = true; | |
2266 | } | |
2267 | break; | |
2268 | case e1000_media_type_fiber: | |
120a5d0d | 2269 | e1000_check_for_link(hw); |
be0f0719 JB |
2270 | link_active = !!(er32(STATUS) & E1000_STATUS_LU); |
2271 | break; | |
2272 | case e1000_media_type_internal_serdes: | |
120a5d0d | 2273 | e1000_check_for_link(hw); |
be0f0719 JB |
2274 | link_active = hw->serdes_has_link; |
2275 | break; | |
2276 | default: | |
2277 | break; | |
2278 | } | |
2279 | ||
2280 | return link_active; | |
2281 | } | |
2282 | ||
1da177e4 LT |
2283 | /** |
2284 | * e1000_watchdog - Timer Call-back | |
2285 | * @data: pointer to adapter cast into an unsigned long | |
2286 | **/ | |
64798845 | 2287 | static void e1000_watchdog(unsigned long data) |
1da177e4 | 2288 | { |
e982f17c | 2289 | struct e1000_adapter *adapter = (struct e1000_adapter *)data; |
1dc32918 | 2290 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 | 2291 | struct net_device *netdev = adapter->netdev; |
545c67c0 | 2292 | struct e1000_tx_ring *txdr = adapter->tx_ring; |
406874a7 | 2293 | u32 link, tctl; |
90fb5135 | 2294 | |
be0f0719 JB |
2295 | link = e1000_has_link(adapter); |
2296 | if ((netif_carrier_ok(netdev)) && link) | |
2297 | goto link_up; | |
1da177e4 | 2298 | |
96838a40 JB |
2299 | if (link) { |
2300 | if (!netif_carrier_ok(netdev)) { | |
406874a7 | 2301 | u32 ctrl; |
c3033b01 | 2302 | bool txb2b = true; |
be0f0719 | 2303 | /* update snapshot of PHY registers on LSC */ |
1dc32918 | 2304 | e1000_get_speed_and_duplex(hw, |
1da177e4 LT |
2305 | &adapter->link_speed, |
2306 | &adapter->link_duplex); | |
2307 | ||
1dc32918 | 2308 | ctrl = er32(CTRL); |
b30c4d8f JK |
2309 | printk(KERN_INFO "e1000: %s NIC Link is Up %d Mbps %s, " |
2310 | "Flow Control: %s\n", | |
2311 | netdev->name, | |
2312 | adapter->link_speed, | |
2313 | adapter->link_duplex == FULL_DUPLEX ? | |
9669f53b AK |
2314 | "Full Duplex" : "Half Duplex", |
2315 | ((ctrl & E1000_CTRL_TFCE) && (ctrl & | |
2316 | E1000_CTRL_RFCE)) ? "RX/TX" : ((ctrl & | |
2317 | E1000_CTRL_RFCE) ? "RX" : ((ctrl & | |
2318 | E1000_CTRL_TFCE) ? "TX" : "None" ))); | |
1da177e4 | 2319 | |
7e6c9861 JK |
2320 | /* tweak tx_queue_len according to speed/duplex |
2321 | * and adjust the timeout factor */ | |
66a2b0a3 JK |
2322 | netdev->tx_queue_len = adapter->tx_queue_len; |
2323 | adapter->tx_timeout_factor = 1; | |
7e6c9861 JK |
2324 | switch (adapter->link_speed) { |
2325 | case SPEED_10: | |
c3033b01 | 2326 | txb2b = false; |
7e6c9861 | 2327 | netdev->tx_queue_len = 10; |
be0f0719 | 2328 | adapter->tx_timeout_factor = 16; |
7e6c9861 JK |
2329 | break; |
2330 | case SPEED_100: | |
c3033b01 | 2331 | txb2b = false; |
7e6c9861 JK |
2332 | netdev->tx_queue_len = 100; |
2333 | /* maybe add some timeout factor ? */ | |
2334 | break; | |
2335 | } | |
2336 | ||
1532ecea | 2337 | /* enable transmits in the hardware */ |
1dc32918 | 2338 | tctl = er32(TCTL); |
7e6c9861 | 2339 | tctl |= E1000_TCTL_EN; |
1dc32918 | 2340 | ew32(TCTL, tctl); |
66a2b0a3 | 2341 | |
1da177e4 | 2342 | netif_carrier_on(netdev); |
baa34745 JB |
2343 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
2344 | mod_timer(&adapter->phy_info_timer, | |
2345 | round_jiffies(jiffies + 2 * HZ)); | |
1da177e4 LT |
2346 | adapter->smartspeed = 0; |
2347 | } | |
2348 | } else { | |
96838a40 | 2349 | if (netif_carrier_ok(netdev)) { |
1da177e4 LT |
2350 | adapter->link_speed = 0; |
2351 | adapter->link_duplex = 0; | |
b30c4d8f JK |
2352 | printk(KERN_INFO "e1000: %s NIC Link is Down\n", |
2353 | netdev->name); | |
1da177e4 | 2354 | netif_carrier_off(netdev); |
baa34745 JB |
2355 | |
2356 | if (!test_bit(__E1000_DOWN, &adapter->flags)) | |
2357 | mod_timer(&adapter->phy_info_timer, | |
2358 | round_jiffies(jiffies + 2 * HZ)); | |
1da177e4 LT |
2359 | } |
2360 | ||
2361 | e1000_smartspeed(adapter); | |
2362 | } | |
2363 | ||
be0f0719 | 2364 | link_up: |
1da177e4 LT |
2365 | e1000_update_stats(adapter); |
2366 | ||
1dc32918 | 2367 | hw->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; |
1da177e4 | 2368 | adapter->tpt_old = adapter->stats.tpt; |
1dc32918 | 2369 | hw->collision_delta = adapter->stats.colc - adapter->colc_old; |
1da177e4 LT |
2370 | adapter->colc_old = adapter->stats.colc; |
2371 | ||
2372 | adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; | |
2373 | adapter->gorcl_old = adapter->stats.gorcl; | |
2374 | adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; | |
2375 | adapter->gotcl_old = adapter->stats.gotcl; | |
2376 | ||
1dc32918 | 2377 | e1000_update_adaptive(hw); |
1da177e4 | 2378 | |
f56799ea | 2379 | if (!netif_carrier_ok(netdev)) { |
581d708e | 2380 | if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { |
1da177e4 LT |
2381 | /* We've lost link, so the controller stops DMA, |
2382 | * but we've got queued Tx work that's never going | |
2383 | * to get done, so reset controller to flush Tx. | |
2384 | * (Do the reset outside of interrupt context). */ | |
87041639 JK |
2385 | adapter->tx_timeout_count++; |
2386 | schedule_work(&adapter->reset_task); | |
c2d5ab49 JB |
2387 | /* return immediately since reset is imminent */ |
2388 | return; | |
1da177e4 LT |
2389 | } |
2390 | } | |
2391 | ||
1da177e4 | 2392 | /* Cause software interrupt to ensure rx ring is cleaned */ |
1dc32918 | 2393 | ew32(ICS, E1000_ICS_RXDMT0); |
1da177e4 | 2394 | |
2648345f | 2395 | /* Force detection of hung controller every watchdog period */ |
c3033b01 | 2396 | adapter->detect_tx_hung = true; |
1da177e4 LT |
2397 | |
2398 | /* Reset the timer */ | |
baa34745 JB |
2399 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
2400 | mod_timer(&adapter->watchdog_timer, | |
2401 | round_jiffies(jiffies + 2 * HZ)); | |
1da177e4 LT |
2402 | } |
2403 | ||
835bb129 JB |
2404 | enum latency_range { |
2405 | lowest_latency = 0, | |
2406 | low_latency = 1, | |
2407 | bulk_latency = 2, | |
2408 | latency_invalid = 255 | |
2409 | }; | |
2410 | ||
2411 | /** | |
2412 | * e1000_update_itr - update the dynamic ITR value based on statistics | |
8fce4731 JB |
2413 | * @adapter: pointer to adapter |
2414 | * @itr_setting: current adapter->itr | |
2415 | * @packets: the number of packets during this measurement interval | |
2416 | * @bytes: the number of bytes during this measurement interval | |
2417 | * | |
835bb129 JB |
2418 | * Stores a new ITR value based on packets and byte |
2419 | * counts during the last interrupt. The advantage of per interrupt | |
2420 | * computation is faster updates and more accurate ITR for the current | |
2421 | * traffic pattern. Constants in this function were computed | |
2422 | * based on theoretical maximum wire speed and thresholds were set based | |
2423 | * on testing data as well as attempting to minimize response time | |
2424 | * while increasing bulk throughput. | |
2425 | * this functionality is controlled by the InterruptThrottleRate module | |
2426 | * parameter (see e1000_param.c) | |
835bb129 JB |
2427 | **/ |
2428 | static unsigned int e1000_update_itr(struct e1000_adapter *adapter, | |
64798845 | 2429 | u16 itr_setting, int packets, int bytes) |
835bb129 JB |
2430 | { |
2431 | unsigned int retval = itr_setting; | |
2432 | struct e1000_hw *hw = &adapter->hw; | |
2433 | ||
2434 | if (unlikely(hw->mac_type < e1000_82540)) | |
2435 | goto update_itr_done; | |
2436 | ||
2437 | if (packets == 0) | |
2438 | goto update_itr_done; | |
2439 | ||
835bb129 JB |
2440 | switch (itr_setting) { |
2441 | case lowest_latency: | |
2b65326e JB |
2442 | /* jumbo frames get bulk treatment*/ |
2443 | if (bytes/packets > 8000) | |
2444 | retval = bulk_latency; | |
2445 | else if ((packets < 5) && (bytes > 512)) | |
835bb129 JB |
2446 | retval = low_latency; |
2447 | break; | |
2448 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
2449 | if (bytes > 10000) { | |
2b65326e JB |
2450 | /* jumbo frames need bulk latency setting */ |
2451 | if (bytes/packets > 8000) | |
2452 | retval = bulk_latency; | |
2453 | else if ((packets < 10) || ((bytes/packets) > 1200)) | |
835bb129 JB |
2454 | retval = bulk_latency; |
2455 | else if ((packets > 35)) | |
2456 | retval = lowest_latency; | |
2b65326e JB |
2457 | } else if (bytes/packets > 2000) |
2458 | retval = bulk_latency; | |
2459 | else if (packets <= 2 && bytes < 512) | |
835bb129 JB |
2460 | retval = lowest_latency; |
2461 | break; | |
2462 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
2463 | if (bytes > 25000) { | |
2464 | if (packets > 35) | |
2465 | retval = low_latency; | |
2b65326e JB |
2466 | } else if (bytes < 6000) { |
2467 | retval = low_latency; | |
835bb129 JB |
2468 | } |
2469 | break; | |
2470 | } | |
2471 | ||
2472 | update_itr_done: | |
2473 | return retval; | |
2474 | } | |
2475 | ||
2476 | static void e1000_set_itr(struct e1000_adapter *adapter) | |
2477 | { | |
2478 | struct e1000_hw *hw = &adapter->hw; | |
406874a7 JP |
2479 | u16 current_itr; |
2480 | u32 new_itr = adapter->itr; | |
835bb129 JB |
2481 | |
2482 | if (unlikely(hw->mac_type < e1000_82540)) | |
2483 | return; | |
2484 | ||
2485 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ | |
2486 | if (unlikely(adapter->link_speed != SPEED_1000)) { | |
2487 | current_itr = 0; | |
2488 | new_itr = 4000; | |
2489 | goto set_itr_now; | |
2490 | } | |
2491 | ||
2492 | adapter->tx_itr = e1000_update_itr(adapter, | |
2493 | adapter->tx_itr, | |
2494 | adapter->total_tx_packets, | |
2495 | adapter->total_tx_bytes); | |
2b65326e JB |
2496 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
2497 | if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) | |
2498 | adapter->tx_itr = low_latency; | |
2499 | ||
835bb129 JB |
2500 | adapter->rx_itr = e1000_update_itr(adapter, |
2501 | adapter->rx_itr, | |
2502 | adapter->total_rx_packets, | |
2503 | adapter->total_rx_bytes); | |
2b65326e JB |
2504 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
2505 | if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) | |
2506 | adapter->rx_itr = low_latency; | |
835bb129 JB |
2507 | |
2508 | current_itr = max(adapter->rx_itr, adapter->tx_itr); | |
2509 | ||
835bb129 JB |
2510 | switch (current_itr) { |
2511 | /* counts and packets in update_itr are dependent on these numbers */ | |
2512 | case lowest_latency: | |
2513 | new_itr = 70000; | |
2514 | break; | |
2515 | case low_latency: | |
2516 | new_itr = 20000; /* aka hwitr = ~200 */ | |
2517 | break; | |
2518 | case bulk_latency: | |
2519 | new_itr = 4000; | |
2520 | break; | |
2521 | default: | |
2522 | break; | |
2523 | } | |
2524 | ||
2525 | set_itr_now: | |
2526 | if (new_itr != adapter->itr) { | |
2527 | /* this attempts to bias the interrupt rate towards Bulk | |
2528 | * by adding intermediate steps when interrupt rate is | |
2529 | * increasing */ | |
2530 | new_itr = new_itr > adapter->itr ? | |
2531 | min(adapter->itr + (new_itr >> 2), new_itr) : | |
2532 | new_itr; | |
2533 | adapter->itr = new_itr; | |
1dc32918 | 2534 | ew32(ITR, 1000000000 / (new_itr * 256)); |
835bb129 JB |
2535 | } |
2536 | ||
2537 | return; | |
2538 | } | |
2539 | ||
1da177e4 LT |
2540 | #define E1000_TX_FLAGS_CSUM 0x00000001 |
2541 | #define E1000_TX_FLAGS_VLAN 0x00000002 | |
2542 | #define E1000_TX_FLAGS_TSO 0x00000004 | |
2d7edb92 | 2543 | #define E1000_TX_FLAGS_IPV4 0x00000008 |
1da177e4 LT |
2544 | #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
2545 | #define E1000_TX_FLAGS_VLAN_SHIFT 16 | |
2546 | ||
64798845 JP |
2547 | static int e1000_tso(struct e1000_adapter *adapter, |
2548 | struct e1000_tx_ring *tx_ring, struct sk_buff *skb) | |
1da177e4 | 2549 | { |
1da177e4 | 2550 | struct e1000_context_desc *context_desc; |
545c67c0 | 2551 | struct e1000_buffer *buffer_info; |
1da177e4 | 2552 | unsigned int i; |
406874a7 JP |
2553 | u32 cmd_length = 0; |
2554 | u16 ipcse = 0, tucse, mss; | |
2555 | u8 ipcss, ipcso, tucss, tucso, hdr_len; | |
1da177e4 LT |
2556 | int err; |
2557 | ||
89114afd | 2558 | if (skb_is_gso(skb)) { |
1da177e4 LT |
2559 | if (skb_header_cloned(skb)) { |
2560 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
2561 | if (err) | |
2562 | return err; | |
2563 | } | |
2564 | ||
ab6a5bb6 | 2565 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
7967168c | 2566 | mss = skb_shinfo(skb)->gso_size; |
60828236 | 2567 | if (skb->protocol == htons(ETH_P_IP)) { |
eddc9ec5 ACM |
2568 | struct iphdr *iph = ip_hdr(skb); |
2569 | iph->tot_len = 0; | |
2570 | iph->check = 0; | |
aa8223c7 ACM |
2571 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, |
2572 | iph->daddr, 0, | |
2573 | IPPROTO_TCP, | |
2574 | 0); | |
2d7edb92 | 2575 | cmd_length = E1000_TXD_CMD_IP; |
ea2ae17d | 2576 | ipcse = skb_transport_offset(skb) - 1; |
e15fdd03 | 2577 | } else if (skb->protocol == htons(ETH_P_IPV6)) { |
0660e03f | 2578 | ipv6_hdr(skb)->payload_len = 0; |
aa8223c7 | 2579 | tcp_hdr(skb)->check = |
0660e03f ACM |
2580 | ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, |
2581 | &ipv6_hdr(skb)->daddr, | |
2582 | 0, IPPROTO_TCP, 0); | |
2d7edb92 | 2583 | ipcse = 0; |
2d7edb92 | 2584 | } |
bbe735e4 | 2585 | ipcss = skb_network_offset(skb); |
eddc9ec5 | 2586 | ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; |
ea2ae17d | 2587 | tucss = skb_transport_offset(skb); |
aa8223c7 | 2588 | tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; |
1da177e4 LT |
2589 | tucse = 0; |
2590 | ||
2591 | cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | | |
2d7edb92 | 2592 | E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
1da177e4 | 2593 | |
581d708e MC |
2594 | i = tx_ring->next_to_use; |
2595 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
545c67c0 | 2596 | buffer_info = &tx_ring->buffer_info[i]; |
1da177e4 LT |
2597 | |
2598 | context_desc->lower_setup.ip_fields.ipcss = ipcss; | |
2599 | context_desc->lower_setup.ip_fields.ipcso = ipcso; | |
2600 | context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); | |
2601 | context_desc->upper_setup.tcp_fields.tucss = tucss; | |
2602 | context_desc->upper_setup.tcp_fields.tucso = tucso; | |
2603 | context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); | |
2604 | context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); | |
2605 | context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; | |
2606 | context_desc->cmd_and_length = cpu_to_le32(cmd_length); | |
2607 | ||
545c67c0 | 2608 | buffer_info->time_stamp = jiffies; |
a9ebadd6 | 2609 | buffer_info->next_to_watch = i; |
545c67c0 | 2610 | |
581d708e MC |
2611 | if (++i == tx_ring->count) i = 0; |
2612 | tx_ring->next_to_use = i; | |
1da177e4 | 2613 | |
c3033b01 | 2614 | return true; |
1da177e4 | 2615 | } |
c3033b01 | 2616 | return false; |
1da177e4 LT |
2617 | } |
2618 | ||
64798845 JP |
2619 | static bool e1000_tx_csum(struct e1000_adapter *adapter, |
2620 | struct e1000_tx_ring *tx_ring, struct sk_buff *skb) | |
1da177e4 LT |
2621 | { |
2622 | struct e1000_context_desc *context_desc; | |
545c67c0 | 2623 | struct e1000_buffer *buffer_info; |
1da177e4 | 2624 | unsigned int i; |
406874a7 | 2625 | u8 css; |
3ed30676 | 2626 | u32 cmd_len = E1000_TXD_CMD_DEXT; |
1da177e4 | 2627 | |
3ed30676 DG |
2628 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
2629 | return false; | |
1da177e4 | 2630 | |
3ed30676 | 2631 | switch (skb->protocol) { |
09640e63 | 2632 | case cpu_to_be16(ETH_P_IP): |
3ed30676 DG |
2633 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
2634 | cmd_len |= E1000_TXD_CMD_TCP; | |
2635 | break; | |
09640e63 | 2636 | case cpu_to_be16(ETH_P_IPV6): |
3ed30676 DG |
2637 | /* XXX not handling all IPV6 headers */ |
2638 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
2639 | cmd_len |= E1000_TXD_CMD_TCP; | |
2640 | break; | |
2641 | default: | |
2642 | if (unlikely(net_ratelimit())) | |
2643 | DPRINTK(DRV, WARNING, | |
2644 | "checksum_partial proto=%x!\n", skb->protocol); | |
2645 | break; | |
2646 | } | |
1da177e4 | 2647 | |
3ed30676 | 2648 | css = skb_transport_offset(skb); |
1da177e4 | 2649 | |
3ed30676 DG |
2650 | i = tx_ring->next_to_use; |
2651 | buffer_info = &tx_ring->buffer_info[i]; | |
2652 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
545c67c0 | 2653 | |
3ed30676 DG |
2654 | context_desc->lower_setup.ip_config = 0; |
2655 | context_desc->upper_setup.tcp_fields.tucss = css; | |
2656 | context_desc->upper_setup.tcp_fields.tucso = | |
2657 | css + skb->csum_offset; | |
2658 | context_desc->upper_setup.tcp_fields.tucse = 0; | |
2659 | context_desc->tcp_seg_setup.data = 0; | |
2660 | context_desc->cmd_and_length = cpu_to_le32(cmd_len); | |
1da177e4 | 2661 | |
3ed30676 DG |
2662 | buffer_info->time_stamp = jiffies; |
2663 | buffer_info->next_to_watch = i; | |
1da177e4 | 2664 | |
3ed30676 DG |
2665 | if (unlikely(++i == tx_ring->count)) i = 0; |
2666 | tx_ring->next_to_use = i; | |
2667 | ||
2668 | return true; | |
1da177e4 LT |
2669 | } |
2670 | ||
2671 | #define E1000_MAX_TXD_PWR 12 | |
2672 | #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) | |
2673 | ||
64798845 JP |
2674 | static int e1000_tx_map(struct e1000_adapter *adapter, |
2675 | struct e1000_tx_ring *tx_ring, | |
2676 | struct sk_buff *skb, unsigned int first, | |
2677 | unsigned int max_per_txd, unsigned int nr_frags, | |
2678 | unsigned int mss) | |
1da177e4 | 2679 | { |
1dc32918 | 2680 | struct e1000_hw *hw = &adapter->hw; |
602c0554 | 2681 | struct pci_dev *pdev = adapter->pdev; |
37e73df8 | 2682 | struct e1000_buffer *buffer_info; |
d20b606c | 2683 | unsigned int len = skb_headlen(skb); |
602c0554 | 2684 | unsigned int offset = 0, size, count = 0, i; |
1da177e4 | 2685 | unsigned int f; |
1da177e4 LT |
2686 | |
2687 | i = tx_ring->next_to_use; | |
2688 | ||
96838a40 | 2689 | while (len) { |
37e73df8 | 2690 | buffer_info = &tx_ring->buffer_info[i]; |
1da177e4 | 2691 | size = min(len, max_per_txd); |
fd803241 JK |
2692 | /* Workaround for Controller erratum -- |
2693 | * descriptor for non-tso packet in a linear SKB that follows a | |
2694 | * tso gets written back prematurely before the data is fully | |
0f15a8fa | 2695 | * DMA'd to the controller */ |
fd803241 | 2696 | if (!skb->data_len && tx_ring->last_tx_tso && |
89114afd | 2697 | !skb_is_gso(skb)) { |
fd803241 JK |
2698 | tx_ring->last_tx_tso = 0; |
2699 | size -= 4; | |
2700 | } | |
2701 | ||
1da177e4 LT |
2702 | /* Workaround for premature desc write-backs |
2703 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 2704 | if (unlikely(mss && !nr_frags && size == len && size > 8)) |
1da177e4 | 2705 | size -= 4; |
97338bde MC |
2706 | /* work-around for errata 10 and it applies |
2707 | * to all controllers in PCI-X mode | |
2708 | * The fix is to make sure that the first descriptor of a | |
2709 | * packet is smaller than 2048 - 16 - 16 (or 2016) bytes | |
2710 | */ | |
1dc32918 | 2711 | if (unlikely((hw->bus_type == e1000_bus_type_pcix) && |
97338bde MC |
2712 | (size > 2015) && count == 0)) |
2713 | size = 2015; | |
96838a40 | 2714 | |
1da177e4 LT |
2715 | /* Workaround for potential 82544 hang in PCI-X. Avoid |
2716 | * terminating buffers within evenly-aligned dwords. */ | |
96838a40 | 2717 | if (unlikely(adapter->pcix_82544 && |
1da177e4 LT |
2718 | !((unsigned long)(skb->data + offset + size - 1) & 4) && |
2719 | size > 4)) | |
2720 | size -= 4; | |
2721 | ||
2722 | buffer_info->length = size; | |
cdd7549e | 2723 | /* set time_stamp *before* dma to help avoid a possible race */ |
1da177e4 | 2724 | buffer_info->time_stamp = jiffies; |
602c0554 AD |
2725 | buffer_info->mapped_as_page = false; |
2726 | buffer_info->dma = pci_map_single(pdev, skb->data + offset, | |
2727 | size, PCI_DMA_TODEVICE); | |
2728 | if (pci_dma_mapping_error(pdev, buffer_info->dma)) | |
2729 | goto dma_error; | |
a9ebadd6 | 2730 | buffer_info->next_to_watch = i; |
1da177e4 LT |
2731 | |
2732 | len -= size; | |
2733 | offset += size; | |
2734 | count++; | |
37e73df8 AD |
2735 | if (len) { |
2736 | i++; | |
2737 | if (unlikely(i == tx_ring->count)) | |
2738 | i = 0; | |
2739 | } | |
1da177e4 LT |
2740 | } |
2741 | ||
96838a40 | 2742 | for (f = 0; f < nr_frags; f++) { |
1da177e4 LT |
2743 | struct skb_frag_struct *frag; |
2744 | ||
2745 | frag = &skb_shinfo(skb)->frags[f]; | |
2746 | len = frag->size; | |
602c0554 | 2747 | offset = frag->page_offset; |
1da177e4 | 2748 | |
96838a40 | 2749 | while (len) { |
37e73df8 AD |
2750 | i++; |
2751 | if (unlikely(i == tx_ring->count)) | |
2752 | i = 0; | |
2753 | ||
1da177e4 LT |
2754 | buffer_info = &tx_ring->buffer_info[i]; |
2755 | size = min(len, max_per_txd); | |
1da177e4 LT |
2756 | /* Workaround for premature desc write-backs |
2757 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 2758 | if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) |
1da177e4 | 2759 | size -= 4; |
1da177e4 LT |
2760 | /* Workaround for potential 82544 hang in PCI-X. |
2761 | * Avoid terminating buffers within evenly-aligned | |
2762 | * dwords. */ | |
96838a40 | 2763 | if (unlikely(adapter->pcix_82544 && |
8fce4731 JB |
2764 | !((unsigned long)(page_to_phys(frag->page) + offset |
2765 | + size - 1) & 4) && | |
2766 | size > 4)) | |
1da177e4 LT |
2767 | size -= 4; |
2768 | ||
2769 | buffer_info->length = size; | |
1da177e4 | 2770 | buffer_info->time_stamp = jiffies; |
602c0554 AD |
2771 | buffer_info->mapped_as_page = true; |
2772 | buffer_info->dma = pci_map_page(pdev, frag->page, | |
2773 | offset, size, | |
2774 | PCI_DMA_TODEVICE); | |
2775 | if (pci_dma_mapping_error(pdev, buffer_info->dma)) | |
2776 | goto dma_error; | |
a9ebadd6 | 2777 | buffer_info->next_to_watch = i; |
1da177e4 LT |
2778 | |
2779 | len -= size; | |
2780 | offset += size; | |
2781 | count++; | |
1da177e4 LT |
2782 | } |
2783 | } | |
2784 | ||
1da177e4 LT |
2785 | tx_ring->buffer_info[i].skb = skb; |
2786 | tx_ring->buffer_info[first].next_to_watch = i; | |
2787 | ||
2788 | return count; | |
602c0554 AD |
2789 | |
2790 | dma_error: | |
2791 | dev_err(&pdev->dev, "TX DMA map failed\n"); | |
2792 | buffer_info->dma = 0; | |
c1fa347f | 2793 | if (count) |
602c0554 | 2794 | count--; |
c1fa347f RK |
2795 | |
2796 | while (count--) { | |
2797 | if (i==0) | |
602c0554 | 2798 | i += tx_ring->count; |
c1fa347f | 2799 | i--; |
602c0554 AD |
2800 | buffer_info = &tx_ring->buffer_info[i]; |
2801 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); | |
2802 | } | |
2803 | ||
2804 | return 0; | |
1da177e4 LT |
2805 | } |
2806 | ||
64798845 JP |
2807 | static void e1000_tx_queue(struct e1000_adapter *adapter, |
2808 | struct e1000_tx_ring *tx_ring, int tx_flags, | |
2809 | int count) | |
1da177e4 | 2810 | { |
1dc32918 | 2811 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
2812 | struct e1000_tx_desc *tx_desc = NULL; |
2813 | struct e1000_buffer *buffer_info; | |
406874a7 | 2814 | u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; |
1da177e4 LT |
2815 | unsigned int i; |
2816 | ||
96838a40 | 2817 | if (likely(tx_flags & E1000_TX_FLAGS_TSO)) { |
1da177e4 LT |
2818 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
2819 | E1000_TXD_CMD_TSE; | |
2d7edb92 MC |
2820 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
2821 | ||
96838a40 | 2822 | if (likely(tx_flags & E1000_TX_FLAGS_IPV4)) |
2d7edb92 | 2823 | txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
1da177e4 LT |
2824 | } |
2825 | ||
96838a40 | 2826 | if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) { |
1da177e4 LT |
2827 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
2828 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
2829 | } | |
2830 | ||
96838a40 | 2831 | if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { |
1da177e4 LT |
2832 | txd_lower |= E1000_TXD_CMD_VLE; |
2833 | txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); | |
2834 | } | |
2835 | ||
2836 | i = tx_ring->next_to_use; | |
2837 | ||
96838a40 | 2838 | while (count--) { |
1da177e4 LT |
2839 | buffer_info = &tx_ring->buffer_info[i]; |
2840 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
2841 | tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
2842 | tx_desc->lower.data = | |
2843 | cpu_to_le32(txd_lower | buffer_info->length); | |
2844 | tx_desc->upper.data = cpu_to_le32(txd_upper); | |
96838a40 | 2845 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
2846 | } |
2847 | ||
2848 | tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); | |
2849 | ||
2850 | /* Force memory writes to complete before letting h/w | |
2851 | * know there are new descriptors to fetch. (Only | |
2852 | * applicable for weak-ordered memory model archs, | |
2853 | * such as IA-64). */ | |
2854 | wmb(); | |
2855 | ||
2856 | tx_ring->next_to_use = i; | |
1dc32918 | 2857 | writel(i, hw->hw_addr + tx_ring->tdt); |
2ce9047f JB |
2858 | /* we need this if more than one processor can write to our tail |
2859 | * at a time, it syncronizes IO on IA64/Altix systems */ | |
2860 | mmiowb(); | |
1da177e4 LT |
2861 | } |
2862 | ||
2863 | /** | |
2864 | * 82547 workaround to avoid controller hang in half-duplex environment. | |
2865 | * The workaround is to avoid queuing a large packet that would span | |
2866 | * the internal Tx FIFO ring boundary by notifying the stack to resend | |
2867 | * the packet at a later time. This gives the Tx FIFO an opportunity to | |
2868 | * flush all packets. When that occurs, we reset the Tx FIFO pointers | |
2869 | * to the beginning of the Tx FIFO. | |
2870 | **/ | |
2871 | ||
2872 | #define E1000_FIFO_HDR 0x10 | |
2873 | #define E1000_82547_PAD_LEN 0x3E0 | |
2874 | ||
64798845 JP |
2875 | static int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, |
2876 | struct sk_buff *skb) | |
1da177e4 | 2877 | { |
406874a7 JP |
2878 | u32 fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; |
2879 | u32 skb_fifo_len = skb->len + E1000_FIFO_HDR; | |
1da177e4 | 2880 | |
9099cfb9 | 2881 | skb_fifo_len = ALIGN(skb_fifo_len, E1000_FIFO_HDR); |
1da177e4 | 2882 | |
96838a40 | 2883 | if (adapter->link_duplex != HALF_DUPLEX) |
1da177e4 LT |
2884 | goto no_fifo_stall_required; |
2885 | ||
96838a40 | 2886 | if (atomic_read(&adapter->tx_fifo_stall)) |
1da177e4 LT |
2887 | return 1; |
2888 | ||
96838a40 | 2889 | if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { |
1da177e4 LT |
2890 | atomic_set(&adapter->tx_fifo_stall, 1); |
2891 | return 1; | |
2892 | } | |
2893 | ||
2894 | no_fifo_stall_required: | |
2895 | adapter->tx_fifo_head += skb_fifo_len; | |
96838a40 | 2896 | if (adapter->tx_fifo_head >= adapter->tx_fifo_size) |
1da177e4 LT |
2897 | adapter->tx_fifo_head -= adapter->tx_fifo_size; |
2898 | return 0; | |
2899 | } | |
2900 | ||
65c7973f JB |
2901 | static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) |
2902 | { | |
2903 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2904 | struct e1000_tx_ring *tx_ring = adapter->tx_ring; | |
2905 | ||
2906 | netif_stop_queue(netdev); | |
2907 | /* Herbert's original patch had: | |
2908 | * smp_mb__after_netif_stop_queue(); | |
2909 | * but since that doesn't exist yet, just open code it. */ | |
2910 | smp_mb(); | |
2911 | ||
2912 | /* We need to check again in a case another CPU has just | |
2913 | * made room available. */ | |
2914 | if (likely(E1000_DESC_UNUSED(tx_ring) < size)) | |
2915 | return -EBUSY; | |
2916 | ||
2917 | /* A reprieve! */ | |
2918 | netif_start_queue(netdev); | |
fcfb1224 | 2919 | ++adapter->restart_queue; |
65c7973f JB |
2920 | return 0; |
2921 | } | |
2922 | ||
2923 | static int e1000_maybe_stop_tx(struct net_device *netdev, | |
2924 | struct e1000_tx_ring *tx_ring, int size) | |
2925 | { | |
2926 | if (likely(E1000_DESC_UNUSED(tx_ring) >= size)) | |
2927 | return 0; | |
2928 | return __e1000_maybe_stop_tx(netdev, size); | |
2929 | } | |
2930 | ||
1da177e4 | 2931 | #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
3b29a56d SH |
2932 | static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
2933 | struct net_device *netdev) | |
1da177e4 | 2934 | { |
60490fe0 | 2935 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 2936 | struct e1000_hw *hw = &adapter->hw; |
581d708e | 2937 | struct e1000_tx_ring *tx_ring; |
1da177e4 LT |
2938 | unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; |
2939 | unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; | |
2940 | unsigned int tx_flags = 0; | |
6d1e3aa7 | 2941 | unsigned int len = skb->len - skb->data_len; |
6d1e3aa7 KK |
2942 | unsigned int nr_frags; |
2943 | unsigned int mss; | |
1da177e4 | 2944 | int count = 0; |
76c224bc | 2945 | int tso; |
1da177e4 | 2946 | unsigned int f; |
1da177e4 | 2947 | |
65c7973f JB |
2948 | /* This goes back to the question of how to logically map a tx queue |
2949 | * to a flow. Right now, performance is impacted slightly negatively | |
2950 | * if using multiple tx queues. If the stack breaks away from a | |
2951 | * single qdisc implementation, we can look at this again. */ | |
581d708e | 2952 | tx_ring = adapter->tx_ring; |
24025e4e | 2953 | |
581d708e | 2954 | if (unlikely(skb->len <= 0)) { |
1da177e4 LT |
2955 | dev_kfree_skb_any(skb); |
2956 | return NETDEV_TX_OK; | |
2957 | } | |
2958 | ||
7967168c | 2959 | mss = skb_shinfo(skb)->gso_size; |
76c224bc | 2960 | /* The controller does a simple calculation to |
1da177e4 LT |
2961 | * make sure there is enough room in the FIFO before |
2962 | * initiating the DMA for each buffer. The calc is: | |
2963 | * 4 = ceil(buffer len/mss). To make sure we don't | |
2964 | * overrun the FIFO, adjust the max buffer len if mss | |
2965 | * drops. */ | |
96838a40 | 2966 | if (mss) { |
406874a7 | 2967 | u8 hdr_len; |
1da177e4 LT |
2968 | max_per_txd = min(mss << 2, max_per_txd); |
2969 | max_txd_pwr = fls(max_per_txd) - 1; | |
9a3056da | 2970 | |
ab6a5bb6 | 2971 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
6d1e3aa7 | 2972 | if (skb->data_len && hdr_len == len) { |
1dc32918 | 2973 | switch (hw->mac_type) { |
9f687888 | 2974 | unsigned int pull_size; |
683a2aa3 HX |
2975 | case e1000_82544: |
2976 | /* Make sure we have room to chop off 4 bytes, | |
2977 | * and that the end alignment will work out to | |
2978 | * this hardware's requirements | |
2979 | * NOTE: this is a TSO only workaround | |
2980 | * if end byte alignment not correct move us | |
2981 | * into the next dword */ | |
27a884dc | 2982 | if ((unsigned long)(skb_tail_pointer(skb) - 1) & 4) |
683a2aa3 HX |
2983 | break; |
2984 | /* fall through */ | |
9f687888 JK |
2985 | pull_size = min((unsigned int)4, skb->data_len); |
2986 | if (!__pskb_pull_tail(skb, pull_size)) { | |
a5eafce2 | 2987 | DPRINTK(DRV, ERR, |
9f687888 JK |
2988 | "__pskb_pull_tail failed.\n"); |
2989 | dev_kfree_skb_any(skb); | |
749dfc70 | 2990 | return NETDEV_TX_OK; |
9f687888 JK |
2991 | } |
2992 | len = skb->len - skb->data_len; | |
2993 | break; | |
2994 | default: | |
2995 | /* do nothing */ | |
2996 | break; | |
d74bbd3b | 2997 | } |
9a3056da | 2998 | } |
1da177e4 LT |
2999 | } |
3000 | ||
9a3056da | 3001 | /* reserve a descriptor for the offload context */ |
84fa7933 | 3002 | if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) |
1da177e4 | 3003 | count++; |
2648345f | 3004 | count++; |
fd803241 | 3005 | |
fd803241 | 3006 | /* Controller Erratum workaround */ |
89114afd | 3007 | if (!skb->data_len && tx_ring->last_tx_tso && !skb_is_gso(skb)) |
fd803241 | 3008 | count++; |
fd803241 | 3009 | |
1da177e4 LT |
3010 | count += TXD_USE_COUNT(len, max_txd_pwr); |
3011 | ||
96838a40 | 3012 | if (adapter->pcix_82544) |
1da177e4 LT |
3013 | count++; |
3014 | ||
96838a40 | 3015 | /* work-around for errata 10 and it applies to all controllers |
97338bde MC |
3016 | * in PCI-X mode, so add one more descriptor to the count |
3017 | */ | |
1dc32918 | 3018 | if (unlikely((hw->bus_type == e1000_bus_type_pcix) && |
97338bde MC |
3019 | (len > 2015))) |
3020 | count++; | |
3021 | ||
1da177e4 | 3022 | nr_frags = skb_shinfo(skb)->nr_frags; |
96838a40 | 3023 | for (f = 0; f < nr_frags; f++) |
1da177e4 LT |
3024 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, |
3025 | max_txd_pwr); | |
96838a40 | 3026 | if (adapter->pcix_82544) |
1da177e4 LT |
3027 | count += nr_frags; |
3028 | ||
1da177e4 LT |
3029 | /* need: count + 2 desc gap to keep tail from touching |
3030 | * head, otherwise try next time */ | |
8017943e | 3031 | if (unlikely(e1000_maybe_stop_tx(netdev, tx_ring, count + 2))) |
1da177e4 | 3032 | return NETDEV_TX_BUSY; |
1da177e4 | 3033 | |
1dc32918 | 3034 | if (unlikely(hw->mac_type == e1000_82547)) { |
96838a40 | 3035 | if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) { |
1da177e4 | 3036 | netif_stop_queue(netdev); |
baa34745 JB |
3037 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
3038 | mod_timer(&adapter->tx_fifo_stall_timer, | |
3039 | jiffies + 1); | |
1da177e4 LT |
3040 | return NETDEV_TX_BUSY; |
3041 | } | |
3042 | } | |
3043 | ||
96838a40 | 3044 | if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) { |
1da177e4 LT |
3045 | tx_flags |= E1000_TX_FLAGS_VLAN; |
3046 | tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); | |
3047 | } | |
3048 | ||
581d708e | 3049 | first = tx_ring->next_to_use; |
96838a40 | 3050 | |
581d708e | 3051 | tso = e1000_tso(adapter, tx_ring, skb); |
1da177e4 LT |
3052 | if (tso < 0) { |
3053 | dev_kfree_skb_any(skb); | |
3054 | return NETDEV_TX_OK; | |
3055 | } | |
3056 | ||
fd803241 | 3057 | if (likely(tso)) { |
8fce4731 JB |
3058 | if (likely(hw->mac_type != e1000_82544)) |
3059 | tx_ring->last_tx_tso = 1; | |
1da177e4 | 3060 | tx_flags |= E1000_TX_FLAGS_TSO; |
fd803241 | 3061 | } else if (likely(e1000_tx_csum(adapter, tx_ring, skb))) |
1da177e4 LT |
3062 | tx_flags |= E1000_TX_FLAGS_CSUM; |
3063 | ||
60828236 | 3064 | if (likely(skb->protocol == htons(ETH_P_IP))) |
2d7edb92 MC |
3065 | tx_flags |= E1000_TX_FLAGS_IPV4; |
3066 | ||
37e73df8 AD |
3067 | count = e1000_tx_map(adapter, tx_ring, skb, first, max_per_txd, |
3068 | nr_frags, mss); | |
1da177e4 | 3069 | |
37e73df8 AD |
3070 | if (count) { |
3071 | e1000_tx_queue(adapter, tx_ring, tx_flags, count); | |
37e73df8 AD |
3072 | /* Make sure there is space in the ring for the next send. */ |
3073 | e1000_maybe_stop_tx(netdev, tx_ring, MAX_SKB_FRAGS + 2); | |
1da177e4 | 3074 | |
37e73df8 AD |
3075 | } else { |
3076 | dev_kfree_skb_any(skb); | |
3077 | tx_ring->buffer_info[first].time_stamp = 0; | |
3078 | tx_ring->next_to_use = first; | |
3079 | } | |
1da177e4 | 3080 | |
1da177e4 LT |
3081 | return NETDEV_TX_OK; |
3082 | } | |
3083 | ||
3084 | /** | |
3085 | * e1000_tx_timeout - Respond to a Tx Hang | |
3086 | * @netdev: network interface device structure | |
3087 | **/ | |
3088 | ||
64798845 | 3089 | static void e1000_tx_timeout(struct net_device *netdev) |
1da177e4 | 3090 | { |
60490fe0 | 3091 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
3092 | |
3093 | /* Do the reset outside of interrupt context */ | |
87041639 JK |
3094 | adapter->tx_timeout_count++; |
3095 | schedule_work(&adapter->reset_task); | |
1da177e4 LT |
3096 | } |
3097 | ||
64798845 | 3098 | static void e1000_reset_task(struct work_struct *work) |
1da177e4 | 3099 | { |
65f27f38 DH |
3100 | struct e1000_adapter *adapter = |
3101 | container_of(work, struct e1000_adapter, reset_task); | |
1da177e4 | 3102 | |
2db10a08 | 3103 | e1000_reinit_locked(adapter); |
1da177e4 LT |
3104 | } |
3105 | ||
3106 | /** | |
3107 | * e1000_get_stats - Get System Network Statistics | |
3108 | * @netdev: network interface device structure | |
3109 | * | |
3110 | * Returns the address of the device statistics structure. | |
3111 | * The statistics are actually updated from the timer callback. | |
3112 | **/ | |
3113 | ||
64798845 | 3114 | static struct net_device_stats *e1000_get_stats(struct net_device *netdev) |
1da177e4 | 3115 | { |
6b7660cd | 3116 | /* only return the current stats */ |
5fe31def | 3117 | return &netdev->stats; |
1da177e4 LT |
3118 | } |
3119 | ||
3120 | /** | |
3121 | * e1000_change_mtu - Change the Maximum Transfer Unit | |
3122 | * @netdev: network interface device structure | |
3123 | * @new_mtu: new value for maximum frame size | |
3124 | * | |
3125 | * Returns 0 on success, negative on failure | |
3126 | **/ | |
3127 | ||
64798845 | 3128 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu) |
1da177e4 | 3129 | { |
60490fe0 | 3130 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 3131 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
3132 | int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
3133 | ||
96838a40 JB |
3134 | if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || |
3135 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
3136 | DPRINTK(PROBE, ERR, "Invalid MTU setting\n"); | |
1da177e4 | 3137 | return -EINVAL; |
2d7edb92 | 3138 | } |
1da177e4 | 3139 | |
997f5cbd | 3140 | /* Adapter-specific max frame size limits. */ |
1dc32918 | 3141 | switch (hw->mac_type) { |
9e2feace | 3142 | case e1000_undefined ... e1000_82542_rev2_1: |
b7cb8c2c | 3143 | if (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN)) { |
997f5cbd | 3144 | DPRINTK(PROBE, ERR, "Jumbo Frames not supported.\n"); |
2d7edb92 | 3145 | return -EINVAL; |
2d7edb92 | 3146 | } |
997f5cbd | 3147 | break; |
997f5cbd JK |
3148 | default: |
3149 | /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */ | |
3150 | break; | |
1da177e4 LT |
3151 | } |
3152 | ||
3d6114e7 JB |
3153 | while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) |
3154 | msleep(1); | |
3155 | /* e1000_down has a dependency on max_frame_size */ | |
3156 | hw->max_frame_size = max_frame; | |
3157 | if (netif_running(netdev)) | |
3158 | e1000_down(adapter); | |
3159 | ||
87f5032e | 3160 | /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
9e2feace | 3161 | * means we reserve 2 more, this pushes us to allocate from the next |
edbbb3ca JB |
3162 | * larger slab size. |
3163 | * i.e. RXBUFFER_2048 --> size-4096 slab | |
3164 | * however with the new *_jumbo_rx* routines, jumbo receives will use | |
3165 | * fragmented skbs */ | |
9e2feace | 3166 | |
9926146b | 3167 | if (max_frame <= E1000_RXBUFFER_2048) |
9e2feace | 3168 | adapter->rx_buffer_len = E1000_RXBUFFER_2048; |
edbbb3ca JB |
3169 | else |
3170 | #if (PAGE_SIZE >= E1000_RXBUFFER_16384) | |
9e2feace | 3171 | adapter->rx_buffer_len = E1000_RXBUFFER_16384; |
edbbb3ca JB |
3172 | #elif (PAGE_SIZE >= E1000_RXBUFFER_4096) |
3173 | adapter->rx_buffer_len = PAGE_SIZE; | |
3174 | #endif | |
9e2feace AK |
3175 | |
3176 | /* adjust allocation if LPE protects us, and we aren't using SBP */ | |
1dc32918 | 3177 | if (!hw->tbi_compatibility_on && |
b7cb8c2c | 3178 | ((max_frame == (ETH_FRAME_LEN + ETH_FCS_LEN)) || |
9e2feace AK |
3179 | (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE))) |
3180 | adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; | |
997f5cbd | 3181 | |
3d6114e7 JB |
3182 | printk(KERN_INFO "e1000: %s changing MTU from %d to %d\n", |
3183 | netdev->name, netdev->mtu, new_mtu); | |
2d7edb92 MC |
3184 | netdev->mtu = new_mtu; |
3185 | ||
2db10a08 | 3186 | if (netif_running(netdev)) |
3d6114e7 JB |
3187 | e1000_up(adapter); |
3188 | else | |
3189 | e1000_reset(adapter); | |
3190 | ||
3191 | clear_bit(__E1000_RESETTING, &adapter->flags); | |
1da177e4 | 3192 | |
1da177e4 LT |
3193 | return 0; |
3194 | } | |
3195 | ||
3196 | /** | |
3197 | * e1000_update_stats - Update the board statistics counters | |
3198 | * @adapter: board private structure | |
3199 | **/ | |
3200 | ||
64798845 | 3201 | void e1000_update_stats(struct e1000_adapter *adapter) |
1da177e4 | 3202 | { |
5fe31def | 3203 | struct net_device *netdev = adapter->netdev; |
1da177e4 | 3204 | struct e1000_hw *hw = &adapter->hw; |
282f33c9 | 3205 | struct pci_dev *pdev = adapter->pdev; |
1da177e4 | 3206 | unsigned long flags; |
406874a7 | 3207 | u16 phy_tmp; |
1da177e4 LT |
3208 | |
3209 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF | |
3210 | ||
282f33c9 LV |
3211 | /* |
3212 | * Prevent stats update while adapter is being reset, or if the pci | |
3213 | * connection is down. | |
3214 | */ | |
9026729b | 3215 | if (adapter->link_speed == 0) |
282f33c9 | 3216 | return; |
81b1955e | 3217 | if (pci_channel_offline(pdev)) |
9026729b AK |
3218 | return; |
3219 | ||
1da177e4 LT |
3220 | spin_lock_irqsave(&adapter->stats_lock, flags); |
3221 | ||
828d055f | 3222 | /* these counters are modified from e1000_tbi_adjust_stats, |
1da177e4 LT |
3223 | * called from the interrupt context, so they must only |
3224 | * be written while holding adapter->stats_lock | |
3225 | */ | |
3226 | ||
1dc32918 JP |
3227 | adapter->stats.crcerrs += er32(CRCERRS); |
3228 | adapter->stats.gprc += er32(GPRC); | |
3229 | adapter->stats.gorcl += er32(GORCL); | |
3230 | adapter->stats.gorch += er32(GORCH); | |
3231 | adapter->stats.bprc += er32(BPRC); | |
3232 | adapter->stats.mprc += er32(MPRC); | |
3233 | adapter->stats.roc += er32(ROC); | |
3234 | ||
1532ecea JB |
3235 | adapter->stats.prc64 += er32(PRC64); |
3236 | adapter->stats.prc127 += er32(PRC127); | |
3237 | adapter->stats.prc255 += er32(PRC255); | |
3238 | adapter->stats.prc511 += er32(PRC511); | |
3239 | adapter->stats.prc1023 += er32(PRC1023); | |
3240 | adapter->stats.prc1522 += er32(PRC1522); | |
1dc32918 JP |
3241 | |
3242 | adapter->stats.symerrs += er32(SYMERRS); | |
3243 | adapter->stats.mpc += er32(MPC); | |
3244 | adapter->stats.scc += er32(SCC); | |
3245 | adapter->stats.ecol += er32(ECOL); | |
3246 | adapter->stats.mcc += er32(MCC); | |
3247 | adapter->stats.latecol += er32(LATECOL); | |
3248 | adapter->stats.dc += er32(DC); | |
3249 | adapter->stats.sec += er32(SEC); | |
3250 | adapter->stats.rlec += er32(RLEC); | |
3251 | adapter->stats.xonrxc += er32(XONRXC); | |
3252 | adapter->stats.xontxc += er32(XONTXC); | |
3253 | adapter->stats.xoffrxc += er32(XOFFRXC); | |
3254 | adapter->stats.xofftxc += er32(XOFFTXC); | |
3255 | adapter->stats.fcruc += er32(FCRUC); | |
3256 | adapter->stats.gptc += er32(GPTC); | |
3257 | adapter->stats.gotcl += er32(GOTCL); | |
3258 | adapter->stats.gotch += er32(GOTCH); | |
3259 | adapter->stats.rnbc += er32(RNBC); | |
3260 | adapter->stats.ruc += er32(RUC); | |
3261 | adapter->stats.rfc += er32(RFC); | |
3262 | adapter->stats.rjc += er32(RJC); | |
3263 | adapter->stats.torl += er32(TORL); | |
3264 | adapter->stats.torh += er32(TORH); | |
3265 | adapter->stats.totl += er32(TOTL); | |
3266 | adapter->stats.toth += er32(TOTH); | |
3267 | adapter->stats.tpr += er32(TPR); | |
3268 | ||
1532ecea JB |
3269 | adapter->stats.ptc64 += er32(PTC64); |
3270 | adapter->stats.ptc127 += er32(PTC127); | |
3271 | adapter->stats.ptc255 += er32(PTC255); | |
3272 | adapter->stats.ptc511 += er32(PTC511); | |
3273 | adapter->stats.ptc1023 += er32(PTC1023); | |
3274 | adapter->stats.ptc1522 += er32(PTC1522); | |
1dc32918 JP |
3275 | |
3276 | adapter->stats.mptc += er32(MPTC); | |
3277 | adapter->stats.bptc += er32(BPTC); | |
1da177e4 LT |
3278 | |
3279 | /* used for adaptive IFS */ | |
3280 | ||
1dc32918 | 3281 | hw->tx_packet_delta = er32(TPT); |
1da177e4 | 3282 | adapter->stats.tpt += hw->tx_packet_delta; |
1dc32918 | 3283 | hw->collision_delta = er32(COLC); |
1da177e4 LT |
3284 | adapter->stats.colc += hw->collision_delta; |
3285 | ||
96838a40 | 3286 | if (hw->mac_type >= e1000_82543) { |
1dc32918 JP |
3287 | adapter->stats.algnerrc += er32(ALGNERRC); |
3288 | adapter->stats.rxerrc += er32(RXERRC); | |
3289 | adapter->stats.tncrs += er32(TNCRS); | |
3290 | adapter->stats.cexterr += er32(CEXTERR); | |
3291 | adapter->stats.tsctc += er32(TSCTC); | |
3292 | adapter->stats.tsctfc += er32(TSCTFC); | |
1da177e4 LT |
3293 | } |
3294 | ||
3295 | /* Fill out the OS statistics structure */ | |
5fe31def AK |
3296 | netdev->stats.multicast = adapter->stats.mprc; |
3297 | netdev->stats.collisions = adapter->stats.colc; | |
1da177e4 LT |
3298 | |
3299 | /* Rx Errors */ | |
3300 | ||
87041639 JK |
3301 | /* RLEC on some newer hardware can be incorrect so build |
3302 | * our own version based on RUC and ROC */ | |
5fe31def | 3303 | netdev->stats.rx_errors = adapter->stats.rxerrc + |
1da177e4 | 3304 | adapter->stats.crcerrs + adapter->stats.algnerrc + |
87041639 JK |
3305 | adapter->stats.ruc + adapter->stats.roc + |
3306 | adapter->stats.cexterr; | |
49559854 | 3307 | adapter->stats.rlerrc = adapter->stats.ruc + adapter->stats.roc; |
5fe31def AK |
3308 | netdev->stats.rx_length_errors = adapter->stats.rlerrc; |
3309 | netdev->stats.rx_crc_errors = adapter->stats.crcerrs; | |
3310 | netdev->stats.rx_frame_errors = adapter->stats.algnerrc; | |
3311 | netdev->stats.rx_missed_errors = adapter->stats.mpc; | |
1da177e4 LT |
3312 | |
3313 | /* Tx Errors */ | |
49559854 | 3314 | adapter->stats.txerrc = adapter->stats.ecol + adapter->stats.latecol; |
5fe31def AK |
3315 | netdev->stats.tx_errors = adapter->stats.txerrc; |
3316 | netdev->stats.tx_aborted_errors = adapter->stats.ecol; | |
3317 | netdev->stats.tx_window_errors = adapter->stats.latecol; | |
3318 | netdev->stats.tx_carrier_errors = adapter->stats.tncrs; | |
1dc32918 | 3319 | if (hw->bad_tx_carr_stats_fd && |
167fb284 | 3320 | adapter->link_duplex == FULL_DUPLEX) { |
5fe31def | 3321 | netdev->stats.tx_carrier_errors = 0; |
167fb284 JG |
3322 | adapter->stats.tncrs = 0; |
3323 | } | |
1da177e4 LT |
3324 | |
3325 | /* Tx Dropped needs to be maintained elsewhere */ | |
3326 | ||
3327 | /* Phy Stats */ | |
96838a40 JB |
3328 | if (hw->media_type == e1000_media_type_copper) { |
3329 | if ((adapter->link_speed == SPEED_1000) && | |
1da177e4 LT |
3330 | (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
3331 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; | |
3332 | adapter->phy_stats.idle_errors += phy_tmp; | |
3333 | } | |
3334 | ||
96838a40 | 3335 | if ((hw->mac_type <= e1000_82546) && |
1da177e4 LT |
3336 | (hw->phy_type == e1000_phy_m88) && |
3337 | !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) | |
3338 | adapter->phy_stats.receive_errors += phy_tmp; | |
3339 | } | |
3340 | ||
15e376b4 | 3341 | /* Management Stats */ |
1dc32918 JP |
3342 | if (hw->has_smbus) { |
3343 | adapter->stats.mgptc += er32(MGTPTC); | |
3344 | adapter->stats.mgprc += er32(MGTPRC); | |
3345 | adapter->stats.mgpdc += er32(MGTPDC); | |
15e376b4 JG |
3346 | } |
3347 | ||
1da177e4 LT |
3348 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
3349 | } | |
9ac98284 | 3350 | |
1da177e4 LT |
3351 | /** |
3352 | * e1000_intr - Interrupt Handler | |
3353 | * @irq: interrupt number | |
3354 | * @data: pointer to a network interface device structure | |
1da177e4 LT |
3355 | **/ |
3356 | ||
64798845 | 3357 | static irqreturn_t e1000_intr(int irq, void *data) |
1da177e4 LT |
3358 | { |
3359 | struct net_device *netdev = data; | |
60490fe0 | 3360 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3361 | struct e1000_hw *hw = &adapter->hw; |
1532ecea | 3362 | u32 icr = er32(ICR); |
c3570acb | 3363 | |
e151a60a | 3364 | if (unlikely((!icr) || test_bit(__E1000_DOWN, &adapter->flags))) |
835bb129 JB |
3365 | return IRQ_NONE; /* Not our interrupt */ |
3366 | ||
96838a40 | 3367 | if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { |
1da177e4 | 3368 | hw->get_link_status = 1; |
1314bbf3 AK |
3369 | /* guard against interrupt when we're going down */ |
3370 | if (!test_bit(__E1000_DOWN, &adapter->flags)) | |
3371 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1da177e4 LT |
3372 | } |
3373 | ||
1532ecea JB |
3374 | /* disable interrupts, without the synchronize_irq bit */ |
3375 | ew32(IMC, ~0); | |
3376 | E1000_WRITE_FLUSH(); | |
3377 | ||
288379f0 | 3378 | if (likely(napi_schedule_prep(&adapter->napi))) { |
835bb129 JB |
3379 | adapter->total_tx_bytes = 0; |
3380 | adapter->total_tx_packets = 0; | |
3381 | adapter->total_rx_bytes = 0; | |
3382 | adapter->total_rx_packets = 0; | |
288379f0 | 3383 | __napi_schedule(&adapter->napi); |
a6c42322 | 3384 | } else { |
90fb5135 AK |
3385 | /* this really should not happen! if it does it is basically a |
3386 | * bug, but not a hard error, so enable ints and continue */ | |
a6c42322 JB |
3387 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
3388 | e1000_irq_enable(adapter); | |
3389 | } | |
1da177e4 | 3390 | |
1da177e4 LT |
3391 | return IRQ_HANDLED; |
3392 | } | |
3393 | ||
1da177e4 LT |
3394 | /** |
3395 | * e1000_clean - NAPI Rx polling callback | |
3396 | * @adapter: board private structure | |
3397 | **/ | |
64798845 | 3398 | static int e1000_clean(struct napi_struct *napi, int budget) |
1da177e4 | 3399 | { |
bea3348e | 3400 | struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); |
650b5a5c | 3401 | int tx_clean_complete = 0, work_done = 0; |
581d708e | 3402 | |
650b5a5c | 3403 | tx_clean_complete = e1000_clean_tx_irq(adapter, &adapter->tx_ring[0]); |
581d708e | 3404 | |
650b5a5c | 3405 | adapter->clean_rx(adapter, &adapter->rx_ring[0], &work_done, budget); |
581d708e | 3406 | |
650b5a5c | 3407 | if (!tx_clean_complete) |
d2c7ddd6 DM |
3408 | work_done = budget; |
3409 | ||
53e52c72 DM |
3410 | /* If budget not fully consumed, exit the polling mode */ |
3411 | if (work_done < budget) { | |
835bb129 JB |
3412 | if (likely(adapter->itr_setting & 3)) |
3413 | e1000_set_itr(adapter); | |
288379f0 | 3414 | napi_complete(napi); |
a6c42322 JB |
3415 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
3416 | e1000_irq_enable(adapter); | |
1da177e4 LT |
3417 | } |
3418 | ||
bea3348e | 3419 | return work_done; |
1da177e4 LT |
3420 | } |
3421 | ||
1da177e4 LT |
3422 | /** |
3423 | * e1000_clean_tx_irq - Reclaim resources after transmit completes | |
3424 | * @adapter: board private structure | |
3425 | **/ | |
64798845 JP |
3426 | static bool e1000_clean_tx_irq(struct e1000_adapter *adapter, |
3427 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 3428 | { |
1dc32918 | 3429 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
3430 | struct net_device *netdev = adapter->netdev; |
3431 | struct e1000_tx_desc *tx_desc, *eop_desc; | |
3432 | struct e1000_buffer *buffer_info; | |
3433 | unsigned int i, eop; | |
2a1af5d7 | 3434 | unsigned int count = 0; |
835bb129 | 3435 | unsigned int total_tx_bytes=0, total_tx_packets=0; |
1da177e4 LT |
3436 | |
3437 | i = tx_ring->next_to_clean; | |
3438 | eop = tx_ring->buffer_info[i].next_to_watch; | |
3439 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
3440 | ||
ccfb342c AD |
3441 | while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && |
3442 | (count < tx_ring->count)) { | |
843f4267 JB |
3443 | bool cleaned = false; |
3444 | for ( ; !cleaned; count++) { | |
1da177e4 LT |
3445 | tx_desc = E1000_TX_DESC(*tx_ring, i); |
3446 | buffer_info = &tx_ring->buffer_info[i]; | |
3447 | cleaned = (i == eop); | |
3448 | ||
835bb129 | 3449 | if (cleaned) { |
2b65326e | 3450 | struct sk_buff *skb = buffer_info->skb; |
7753b171 JB |
3451 | unsigned int segs, bytecount; |
3452 | segs = skb_shinfo(skb)->gso_segs ?: 1; | |
3453 | /* multiply data chunks by size of headers */ | |
3454 | bytecount = ((segs - 1) * skb_headlen(skb)) + | |
3455 | skb->len; | |
2b65326e | 3456 | total_tx_packets += segs; |
7753b171 | 3457 | total_tx_bytes += bytecount; |
835bb129 | 3458 | } |
fd803241 | 3459 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
a9ebadd6 | 3460 | tx_desc->upper.data = 0; |
1da177e4 | 3461 | |
96838a40 | 3462 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 | 3463 | } |
581d708e | 3464 | |
1da177e4 LT |
3465 | eop = tx_ring->buffer_info[i].next_to_watch; |
3466 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
3467 | } | |
3468 | ||
3469 | tx_ring->next_to_clean = i; | |
3470 | ||
77b2aad5 | 3471 | #define TX_WAKE_THRESHOLD 32 |
843f4267 | 3472 | if (unlikely(count && netif_carrier_ok(netdev) && |
65c7973f JB |
3473 | E1000_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD)) { |
3474 | /* Make sure that anybody stopping the queue after this | |
3475 | * sees the new next_to_clean. | |
3476 | */ | |
3477 | smp_mb(); | |
cdd7549e JB |
3478 | |
3479 | if (netif_queue_stopped(netdev) && | |
3480 | !(test_bit(__E1000_DOWN, &adapter->flags))) { | |
77b2aad5 | 3481 | netif_wake_queue(netdev); |
fcfb1224 JB |
3482 | ++adapter->restart_queue; |
3483 | } | |
77b2aad5 | 3484 | } |
2648345f | 3485 | |
581d708e | 3486 | if (adapter->detect_tx_hung) { |
2648345f | 3487 | /* Detect a transmit hang in hardware, this serializes the |
1da177e4 | 3488 | * check with the clearing of time_stamp and movement of i */ |
c3033b01 | 3489 | adapter->detect_tx_hung = false; |
cdd7549e JB |
3490 | if (tx_ring->buffer_info[eop].time_stamp && |
3491 | time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + | |
8e95a202 JP |
3492 | (adapter->tx_timeout_factor * HZ)) && |
3493 | !(er32(STATUS) & E1000_STATUS_TXOFF)) { | |
70b8f1e1 MC |
3494 | |
3495 | /* detected Tx unit hang */ | |
c6963ef5 | 3496 | DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" |
7bfa4816 | 3497 | " Tx Queue <%lu>\n" |
70b8f1e1 MC |
3498 | " TDH <%x>\n" |
3499 | " TDT <%x>\n" | |
3500 | " next_to_use <%x>\n" | |
3501 | " next_to_clean <%x>\n" | |
3502 | "buffer_info[next_to_clean]\n" | |
70b8f1e1 MC |
3503 | " time_stamp <%lx>\n" |
3504 | " next_to_watch <%x>\n" | |
3505 | " jiffies <%lx>\n" | |
3506 | " next_to_watch.status <%x>\n", | |
7bfa4816 JK |
3507 | (unsigned long)((tx_ring - adapter->tx_ring) / |
3508 | sizeof(struct e1000_tx_ring)), | |
1dc32918 JP |
3509 | readl(hw->hw_addr + tx_ring->tdh), |
3510 | readl(hw->hw_addr + tx_ring->tdt), | |
70b8f1e1 | 3511 | tx_ring->next_to_use, |
392137fa | 3512 | tx_ring->next_to_clean, |
cdd7549e | 3513 | tx_ring->buffer_info[eop].time_stamp, |
70b8f1e1 MC |
3514 | eop, |
3515 | jiffies, | |
3516 | eop_desc->upper.fields.status); | |
1da177e4 | 3517 | netif_stop_queue(netdev); |
70b8f1e1 | 3518 | } |
1da177e4 | 3519 | } |
835bb129 JB |
3520 | adapter->total_tx_bytes += total_tx_bytes; |
3521 | adapter->total_tx_packets += total_tx_packets; | |
5fe31def AK |
3522 | netdev->stats.tx_bytes += total_tx_bytes; |
3523 | netdev->stats.tx_packets += total_tx_packets; | |
ccfb342c | 3524 | return (count < tx_ring->count); |
1da177e4 LT |
3525 | } |
3526 | ||
3527 | /** | |
3528 | * e1000_rx_checksum - Receive Checksum Offload for 82543 | |
2d7edb92 MC |
3529 | * @adapter: board private structure |
3530 | * @status_err: receive descriptor status and error fields | |
3531 | * @csum: receive descriptor csum field | |
3532 | * @sk_buff: socket buffer with received data | |
1da177e4 LT |
3533 | **/ |
3534 | ||
64798845 JP |
3535 | static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, |
3536 | u32 csum, struct sk_buff *skb) | |
1da177e4 | 3537 | { |
1dc32918 | 3538 | struct e1000_hw *hw = &adapter->hw; |
406874a7 JP |
3539 | u16 status = (u16)status_err; |
3540 | u8 errors = (u8)(status_err >> 24); | |
2d7edb92 MC |
3541 | skb->ip_summed = CHECKSUM_NONE; |
3542 | ||
1da177e4 | 3543 | /* 82543 or newer only */ |
1dc32918 | 3544 | if (unlikely(hw->mac_type < e1000_82543)) return; |
1da177e4 | 3545 | /* Ignore Checksum bit is set */ |
96838a40 | 3546 | if (unlikely(status & E1000_RXD_STAT_IXSM)) return; |
2d7edb92 | 3547 | /* TCP/UDP checksum error bit is set */ |
96838a40 | 3548 | if (unlikely(errors & E1000_RXD_ERR_TCPE)) { |
1da177e4 | 3549 | /* let the stack verify checksum errors */ |
1da177e4 | 3550 | adapter->hw_csum_err++; |
2d7edb92 MC |
3551 | return; |
3552 | } | |
3553 | /* TCP/UDP Checksum has not been calculated */ | |
1532ecea JB |
3554 | if (!(status & E1000_RXD_STAT_TCPCS)) |
3555 | return; | |
3556 | ||
2d7edb92 MC |
3557 | /* It must be a TCP or UDP packet with a valid checksum */ |
3558 | if (likely(status & E1000_RXD_STAT_TCPCS)) { | |
1da177e4 LT |
3559 | /* TCP checksum is good */ |
3560 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1da177e4 | 3561 | } |
2d7edb92 | 3562 | adapter->hw_csum_good++; |
1da177e4 LT |
3563 | } |
3564 | ||
edbbb3ca JB |
3565 | /** |
3566 | * e1000_consume_page - helper function | |
3567 | **/ | |
3568 | static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, | |
3569 | u16 length) | |
3570 | { | |
3571 | bi->page = NULL; | |
3572 | skb->len += length; | |
3573 | skb->data_len += length; | |
3574 | skb->truesize += length; | |
3575 | } | |
3576 | ||
3577 | /** | |
3578 | * e1000_receive_skb - helper function to handle rx indications | |
3579 | * @adapter: board private structure | |
3580 | * @status: descriptor status field as written by hardware | |
3581 | * @vlan: descriptor vlan field as written by hardware (no le/be conversion) | |
3582 | * @skb: pointer to sk_buff to be indicated to stack | |
3583 | */ | |
3584 | static void e1000_receive_skb(struct e1000_adapter *adapter, u8 status, | |
3585 | __le16 vlan, struct sk_buff *skb) | |
3586 | { | |
3587 | if (unlikely(adapter->vlgrp && (status & E1000_RXD_STAT_VP))) { | |
3588 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, | |
3589 | le16_to_cpu(vlan) & | |
3590 | E1000_RXD_SPC_VLAN_MASK); | |
3591 | } else { | |
3592 | netif_receive_skb(skb); | |
3593 | } | |
3594 | } | |
3595 | ||
3596 | /** | |
3597 | * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy | |
3598 | * @adapter: board private structure | |
3599 | * @rx_ring: ring to clean | |
3600 | * @work_done: amount of napi work completed this call | |
3601 | * @work_to_do: max amount of work allowed for this call to do | |
3602 | * | |
3603 | * the return value indicates whether actual cleaning was done, there | |
3604 | * is no guarantee that everything was cleaned | |
3605 | */ | |
3606 | static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, | |
3607 | struct e1000_rx_ring *rx_ring, | |
3608 | int *work_done, int work_to_do) | |
3609 | { | |
3610 | struct e1000_hw *hw = &adapter->hw; | |
3611 | struct net_device *netdev = adapter->netdev; | |
3612 | struct pci_dev *pdev = adapter->pdev; | |
3613 | struct e1000_rx_desc *rx_desc, *next_rxd; | |
3614 | struct e1000_buffer *buffer_info, *next_buffer; | |
3615 | unsigned long irq_flags; | |
3616 | u32 length; | |
3617 | unsigned int i; | |
3618 | int cleaned_count = 0; | |
3619 | bool cleaned = false; | |
3620 | unsigned int total_rx_bytes=0, total_rx_packets=0; | |
3621 | ||
3622 | i = rx_ring->next_to_clean; | |
3623 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
3624 | buffer_info = &rx_ring->buffer_info[i]; | |
3625 | ||
3626 | while (rx_desc->status & E1000_RXD_STAT_DD) { | |
3627 | struct sk_buff *skb; | |
3628 | u8 status; | |
3629 | ||
3630 | if (*work_done >= work_to_do) | |
3631 | break; | |
3632 | (*work_done)++; | |
3633 | ||
3634 | status = rx_desc->status; | |
3635 | skb = buffer_info->skb; | |
3636 | buffer_info->skb = NULL; | |
3637 | ||
3638 | if (++i == rx_ring->count) i = 0; | |
3639 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
3640 | prefetch(next_rxd); | |
3641 | ||
3642 | next_buffer = &rx_ring->buffer_info[i]; | |
3643 | ||
3644 | cleaned = true; | |
3645 | cleaned_count++; | |
3646 | pci_unmap_page(pdev, buffer_info->dma, buffer_info->length, | |
3647 | PCI_DMA_FROMDEVICE); | |
3648 | buffer_info->dma = 0; | |
3649 | ||
3650 | length = le16_to_cpu(rx_desc->length); | |
3651 | ||
3652 | /* errors is only valid for DD + EOP descriptors */ | |
3653 | if (unlikely((status & E1000_RXD_STAT_EOP) && | |
3654 | (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) { | |
3655 | u8 last_byte = *(skb->data + length - 1); | |
3656 | if (TBI_ACCEPT(hw, status, rx_desc->errors, length, | |
3657 | last_byte)) { | |
3658 | spin_lock_irqsave(&adapter->stats_lock, | |
3659 | irq_flags); | |
3660 | e1000_tbi_adjust_stats(hw, &adapter->stats, | |
3661 | length, skb->data); | |
3662 | spin_unlock_irqrestore(&adapter->stats_lock, | |
3663 | irq_flags); | |
3664 | length--; | |
3665 | } else { | |
3666 | /* recycle both page and skb */ | |
3667 | buffer_info->skb = skb; | |
3668 | /* an error means any chain goes out the window | |
3669 | * too */ | |
3670 | if (rx_ring->rx_skb_top) | |
3671 | dev_kfree_skb(rx_ring->rx_skb_top); | |
3672 | rx_ring->rx_skb_top = NULL; | |
3673 | goto next_desc; | |
3674 | } | |
3675 | } | |
3676 | ||
3677 | #define rxtop rx_ring->rx_skb_top | |
3678 | if (!(status & E1000_RXD_STAT_EOP)) { | |
3679 | /* this descriptor is only the beginning (or middle) */ | |
3680 | if (!rxtop) { | |
3681 | /* this is the beginning of a chain */ | |
3682 | rxtop = skb; | |
3683 | skb_fill_page_desc(rxtop, 0, buffer_info->page, | |
3684 | 0, length); | |
3685 | } else { | |
3686 | /* this is the middle of a chain */ | |
3687 | skb_fill_page_desc(rxtop, | |
3688 | skb_shinfo(rxtop)->nr_frags, | |
3689 | buffer_info->page, 0, length); | |
3690 | /* re-use the skb, only consumed the page */ | |
3691 | buffer_info->skb = skb; | |
3692 | } | |
3693 | e1000_consume_page(buffer_info, rxtop, length); | |
3694 | goto next_desc; | |
3695 | } else { | |
3696 | if (rxtop) { | |
3697 | /* end of the chain */ | |
3698 | skb_fill_page_desc(rxtop, | |
3699 | skb_shinfo(rxtop)->nr_frags, | |
3700 | buffer_info->page, 0, length); | |
3701 | /* re-use the current skb, we only consumed the | |
3702 | * page */ | |
3703 | buffer_info->skb = skb; | |
3704 | skb = rxtop; | |
3705 | rxtop = NULL; | |
3706 | e1000_consume_page(buffer_info, skb, length); | |
3707 | } else { | |
3708 | /* no chain, got EOP, this buf is the packet | |
3709 | * copybreak to save the put_page/alloc_page */ | |
3710 | if (length <= copybreak && | |
3711 | skb_tailroom(skb) >= length) { | |
3712 | u8 *vaddr; | |
3713 | vaddr = kmap_atomic(buffer_info->page, | |
3714 | KM_SKB_DATA_SOFTIRQ); | |
3715 | memcpy(skb_tail_pointer(skb), vaddr, length); | |
3716 | kunmap_atomic(vaddr, | |
3717 | KM_SKB_DATA_SOFTIRQ); | |
3718 | /* re-use the page, so don't erase | |
3719 | * buffer_info->page */ | |
3720 | skb_put(skb, length); | |
3721 | } else { | |
3722 | skb_fill_page_desc(skb, 0, | |
3723 | buffer_info->page, 0, | |
3724 | length); | |
3725 | e1000_consume_page(buffer_info, skb, | |
3726 | length); | |
3727 | } | |
3728 | } | |
3729 | } | |
3730 | ||
3731 | /* Receive Checksum Offload XXX recompute due to CRC strip? */ | |
3732 | e1000_rx_checksum(adapter, | |
3733 | (u32)(status) | | |
3734 | ((u32)(rx_desc->errors) << 24), | |
3735 | le16_to_cpu(rx_desc->csum), skb); | |
3736 | ||
3737 | pskb_trim(skb, skb->len - 4); | |
3738 | ||
3739 | /* probably a little skewed due to removing CRC */ | |
3740 | total_rx_bytes += skb->len; | |
3741 | total_rx_packets++; | |
3742 | ||
3743 | /* eth type trans needs skb->data to point to something */ | |
3744 | if (!pskb_may_pull(skb, ETH_HLEN)) { | |
3745 | DPRINTK(DRV, ERR, "pskb_may_pull failed.\n"); | |
3746 | dev_kfree_skb(skb); | |
3747 | goto next_desc; | |
3748 | } | |
3749 | ||
3750 | skb->protocol = eth_type_trans(skb, netdev); | |
3751 | ||
3752 | e1000_receive_skb(adapter, status, rx_desc->special, skb); | |
3753 | ||
3754 | next_desc: | |
3755 | rx_desc->status = 0; | |
3756 | ||
3757 | /* return some buffers to hardware, one at a time is too slow */ | |
3758 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
3759 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
3760 | cleaned_count = 0; | |
3761 | } | |
3762 | ||
3763 | /* use prefetched values */ | |
3764 | rx_desc = next_rxd; | |
3765 | buffer_info = next_buffer; | |
3766 | } | |
3767 | rx_ring->next_to_clean = i; | |
3768 | ||
3769 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
3770 | if (cleaned_count) | |
3771 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
3772 | ||
3773 | adapter->total_rx_packets += total_rx_packets; | |
3774 | adapter->total_rx_bytes += total_rx_bytes; | |
5fe31def AK |
3775 | netdev->stats.rx_bytes += total_rx_bytes; |
3776 | netdev->stats.rx_packets += total_rx_packets; | |
edbbb3ca JB |
3777 | return cleaned; |
3778 | } | |
3779 | ||
1da177e4 | 3780 | /** |
2d7edb92 | 3781 | * e1000_clean_rx_irq - Send received data up the network stack; legacy |
1da177e4 | 3782 | * @adapter: board private structure |
edbbb3ca JB |
3783 | * @rx_ring: ring to clean |
3784 | * @work_done: amount of napi work completed this call | |
3785 | * @work_to_do: max amount of work allowed for this call to do | |
3786 | */ | |
64798845 JP |
3787 | static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, |
3788 | struct e1000_rx_ring *rx_ring, | |
3789 | int *work_done, int work_to_do) | |
1da177e4 | 3790 | { |
1dc32918 | 3791 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
3792 | struct net_device *netdev = adapter->netdev; |
3793 | struct pci_dev *pdev = adapter->pdev; | |
86c3d59f JB |
3794 | struct e1000_rx_desc *rx_desc, *next_rxd; |
3795 | struct e1000_buffer *buffer_info, *next_buffer; | |
1da177e4 | 3796 | unsigned long flags; |
406874a7 | 3797 | u32 length; |
1da177e4 | 3798 | unsigned int i; |
72d64a43 | 3799 | int cleaned_count = 0; |
c3033b01 | 3800 | bool cleaned = false; |
835bb129 | 3801 | unsigned int total_rx_bytes=0, total_rx_packets=0; |
1da177e4 LT |
3802 | |
3803 | i = rx_ring->next_to_clean; | |
3804 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
b92ff8ee | 3805 | buffer_info = &rx_ring->buffer_info[i]; |
1da177e4 | 3806 | |
b92ff8ee | 3807 | while (rx_desc->status & E1000_RXD_STAT_DD) { |
24f476ee | 3808 | struct sk_buff *skb; |
a292ca6e | 3809 | u8 status; |
90fb5135 | 3810 | |
96838a40 | 3811 | if (*work_done >= work_to_do) |
1da177e4 LT |
3812 | break; |
3813 | (*work_done)++; | |
c3570acb | 3814 | |
a292ca6e | 3815 | status = rx_desc->status; |
b92ff8ee | 3816 | skb = buffer_info->skb; |
86c3d59f JB |
3817 | buffer_info->skb = NULL; |
3818 | ||
30320be8 JK |
3819 | prefetch(skb->data - NET_IP_ALIGN); |
3820 | ||
86c3d59f JB |
3821 | if (++i == rx_ring->count) i = 0; |
3822 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
30320be8 JK |
3823 | prefetch(next_rxd); |
3824 | ||
86c3d59f | 3825 | next_buffer = &rx_ring->buffer_info[i]; |
86c3d59f | 3826 | |
c3033b01 | 3827 | cleaned = true; |
72d64a43 | 3828 | cleaned_count++; |
edbbb3ca | 3829 | pci_unmap_single(pdev, buffer_info->dma, buffer_info->length, |
1da177e4 | 3830 | PCI_DMA_FROMDEVICE); |
679be3ba | 3831 | buffer_info->dma = 0; |
1da177e4 | 3832 | |
1da177e4 | 3833 | length = le16_to_cpu(rx_desc->length); |
ea30e119 | 3834 | /* !EOP means multiple descriptors were used to store a single |
40a14dea JB |
3835 | * packet, if thats the case we need to toss it. In fact, we |
3836 | * to toss every packet with the EOP bit clear and the next | |
3837 | * frame that _does_ have the EOP bit set, as it is by | |
3838 | * definition only a frame fragment | |
3839 | */ | |
3840 | if (unlikely(!(status & E1000_RXD_STAT_EOP))) | |
3841 | adapter->discarding = true; | |
3842 | ||
3843 | if (adapter->discarding) { | |
a1415ee6 JK |
3844 | /* All receives must fit into a single buffer */ |
3845 | E1000_DBG("%s: Receive packet consumed multiple" | |
3846 | " buffers\n", netdev->name); | |
864c4e45 | 3847 | /* recycle */ |
8fc897b0 | 3848 | buffer_info->skb = skb; |
40a14dea JB |
3849 | if (status & E1000_RXD_STAT_EOP) |
3850 | adapter->discarding = false; | |
1da177e4 LT |
3851 | goto next_desc; |
3852 | } | |
3853 | ||
96838a40 | 3854 | if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { |
edbbb3ca | 3855 | u8 last_byte = *(skb->data + length - 1); |
1dc32918 JP |
3856 | if (TBI_ACCEPT(hw, status, rx_desc->errors, length, |
3857 | last_byte)) { | |
1da177e4 | 3858 | spin_lock_irqsave(&adapter->stats_lock, flags); |
1dc32918 | 3859 | e1000_tbi_adjust_stats(hw, &adapter->stats, |
1da177e4 LT |
3860 | length, skb->data); |
3861 | spin_unlock_irqrestore(&adapter->stats_lock, | |
3862 | flags); | |
3863 | length--; | |
3864 | } else { | |
9e2feace AK |
3865 | /* recycle */ |
3866 | buffer_info->skb = skb; | |
1da177e4 LT |
3867 | goto next_desc; |
3868 | } | |
1cb5821f | 3869 | } |
1da177e4 | 3870 | |
d2a1e213 JB |
3871 | /* adjust length to remove Ethernet CRC, this must be |
3872 | * done after the TBI_ACCEPT workaround above */ | |
3873 | length -= 4; | |
3874 | ||
835bb129 JB |
3875 | /* probably a little skewed due to removing CRC */ |
3876 | total_rx_bytes += length; | |
3877 | total_rx_packets++; | |
3878 | ||
a292ca6e JK |
3879 | /* code added for copybreak, this should improve |
3880 | * performance for small packets with large amounts | |
3881 | * of reassembly being done in the stack */ | |
1f753861 | 3882 | if (length < copybreak) { |
a292ca6e | 3883 | struct sk_buff *new_skb = |
89d71a66 | 3884 | netdev_alloc_skb_ip_align(netdev, length); |
a292ca6e | 3885 | if (new_skb) { |
27d7ff46 ACM |
3886 | skb_copy_to_linear_data_offset(new_skb, |
3887 | -NET_IP_ALIGN, | |
3888 | (skb->data - | |
3889 | NET_IP_ALIGN), | |
3890 | (length + | |
3891 | NET_IP_ALIGN)); | |
a292ca6e JK |
3892 | /* save the skb in buffer_info as good */ |
3893 | buffer_info->skb = skb; | |
3894 | skb = new_skb; | |
a292ca6e | 3895 | } |
996695de AK |
3896 | /* else just continue with the old one */ |
3897 | } | |
a292ca6e | 3898 | /* end copybreak code */ |
996695de | 3899 | skb_put(skb, length); |
1da177e4 LT |
3900 | |
3901 | /* Receive Checksum Offload */ | |
a292ca6e | 3902 | e1000_rx_checksum(adapter, |
406874a7 JP |
3903 | (u32)(status) | |
3904 | ((u32)(rx_desc->errors) << 24), | |
c3d7a3a4 | 3905 | le16_to_cpu(rx_desc->csum), skb); |
96838a40 | 3906 | |
1da177e4 | 3907 | skb->protocol = eth_type_trans(skb, netdev); |
c3570acb | 3908 | |
edbbb3ca | 3909 | e1000_receive_skb(adapter, status, rx_desc->special, skb); |
c3570acb | 3910 | |
1da177e4 LT |
3911 | next_desc: |
3912 | rx_desc->status = 0; | |
1da177e4 | 3913 | |
72d64a43 JK |
3914 | /* return some buffers to hardware, one at a time is too slow */ |
3915 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
3916 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
3917 | cleaned_count = 0; | |
3918 | } | |
3919 | ||
30320be8 | 3920 | /* use prefetched values */ |
86c3d59f JB |
3921 | rx_desc = next_rxd; |
3922 | buffer_info = next_buffer; | |
1da177e4 | 3923 | } |
1da177e4 | 3924 | rx_ring->next_to_clean = i; |
72d64a43 JK |
3925 | |
3926 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
3927 | if (cleaned_count) | |
3928 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
2d7edb92 | 3929 | |
835bb129 JB |
3930 | adapter->total_rx_packets += total_rx_packets; |
3931 | adapter->total_rx_bytes += total_rx_bytes; | |
5fe31def AK |
3932 | netdev->stats.rx_bytes += total_rx_bytes; |
3933 | netdev->stats.rx_packets += total_rx_packets; | |
2d7edb92 MC |
3934 | return cleaned; |
3935 | } | |
3936 | ||
edbbb3ca JB |
3937 | /** |
3938 | * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers | |
3939 | * @adapter: address of board private structure | |
3940 | * @rx_ring: pointer to receive ring structure | |
3941 | * @cleaned_count: number of buffers to allocate this pass | |
3942 | **/ | |
3943 | ||
3944 | static void | |
3945 | e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, | |
3946 | struct e1000_rx_ring *rx_ring, int cleaned_count) | |
3947 | { | |
3948 | struct net_device *netdev = adapter->netdev; | |
3949 | struct pci_dev *pdev = adapter->pdev; | |
3950 | struct e1000_rx_desc *rx_desc; | |
3951 | struct e1000_buffer *buffer_info; | |
3952 | struct sk_buff *skb; | |
3953 | unsigned int i; | |
89d71a66 | 3954 | unsigned int bufsz = 256 - 16 /*for skb_reserve */ ; |
edbbb3ca JB |
3955 | |
3956 | i = rx_ring->next_to_use; | |
3957 | buffer_info = &rx_ring->buffer_info[i]; | |
3958 | ||
3959 | while (cleaned_count--) { | |
3960 | skb = buffer_info->skb; | |
3961 | if (skb) { | |
3962 | skb_trim(skb, 0); | |
3963 | goto check_page; | |
3964 | } | |
3965 | ||
89d71a66 | 3966 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
edbbb3ca JB |
3967 | if (unlikely(!skb)) { |
3968 | /* Better luck next round */ | |
3969 | adapter->alloc_rx_buff_failed++; | |
3970 | break; | |
3971 | } | |
3972 | ||
3973 | /* Fix for errata 23, can't cross 64kB boundary */ | |
3974 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { | |
3975 | struct sk_buff *oldskb = skb; | |
3976 | DPRINTK(PROBE, ERR, "skb align check failed: %u bytes " | |
3977 | "at %p\n", bufsz, skb->data); | |
3978 | /* Try again, without freeing the previous */ | |
89d71a66 | 3979 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
edbbb3ca JB |
3980 | /* Failed allocation, critical failure */ |
3981 | if (!skb) { | |
3982 | dev_kfree_skb(oldskb); | |
3983 | adapter->alloc_rx_buff_failed++; | |
3984 | break; | |
3985 | } | |
3986 | ||
3987 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { | |
3988 | /* give up */ | |
3989 | dev_kfree_skb(skb); | |
3990 | dev_kfree_skb(oldskb); | |
3991 | break; /* while (cleaned_count--) */ | |
3992 | } | |
3993 | ||
3994 | /* Use new allocation */ | |
3995 | dev_kfree_skb(oldskb); | |
3996 | } | |
edbbb3ca JB |
3997 | buffer_info->skb = skb; |
3998 | buffer_info->length = adapter->rx_buffer_len; | |
3999 | check_page: | |
4000 | /* allocate a new page if necessary */ | |
4001 | if (!buffer_info->page) { | |
4002 | buffer_info->page = alloc_page(GFP_ATOMIC); | |
4003 | if (unlikely(!buffer_info->page)) { | |
4004 | adapter->alloc_rx_buff_failed++; | |
4005 | break; | |
4006 | } | |
4007 | } | |
4008 | ||
4009 | if (!buffer_info->dma) | |
4010 | buffer_info->dma = pci_map_page(pdev, | |
4011 | buffer_info->page, 0, | |
4012 | buffer_info->length, | |
4013 | PCI_DMA_FROMDEVICE); | |
4014 | ||
4015 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
4016 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
4017 | ||
4018 | if (unlikely(++i == rx_ring->count)) | |
4019 | i = 0; | |
4020 | buffer_info = &rx_ring->buffer_info[i]; | |
4021 | } | |
4022 | ||
4023 | if (likely(rx_ring->next_to_use != i)) { | |
4024 | rx_ring->next_to_use = i; | |
4025 | if (unlikely(i-- == 0)) | |
4026 | i = (rx_ring->count - 1); | |
4027 | ||
4028 | /* Force memory writes to complete before letting h/w | |
4029 | * know there are new descriptors to fetch. (Only | |
4030 | * applicable for weak-ordered memory model archs, | |
4031 | * such as IA-64). */ | |
4032 | wmb(); | |
4033 | writel(i, adapter->hw.hw_addr + rx_ring->rdt); | |
4034 | } | |
4035 | } | |
4036 | ||
1da177e4 | 4037 | /** |
2d7edb92 | 4038 | * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
1da177e4 LT |
4039 | * @adapter: address of board private structure |
4040 | **/ | |
4041 | ||
64798845 JP |
4042 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
4043 | struct e1000_rx_ring *rx_ring, | |
4044 | int cleaned_count) | |
1da177e4 | 4045 | { |
1dc32918 | 4046 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
4047 | struct net_device *netdev = adapter->netdev; |
4048 | struct pci_dev *pdev = adapter->pdev; | |
4049 | struct e1000_rx_desc *rx_desc; | |
4050 | struct e1000_buffer *buffer_info; | |
4051 | struct sk_buff *skb; | |
2648345f | 4052 | unsigned int i; |
89d71a66 | 4053 | unsigned int bufsz = adapter->rx_buffer_len; |
1da177e4 LT |
4054 | |
4055 | i = rx_ring->next_to_use; | |
4056 | buffer_info = &rx_ring->buffer_info[i]; | |
4057 | ||
a292ca6e | 4058 | while (cleaned_count--) { |
ca6f7224 CH |
4059 | skb = buffer_info->skb; |
4060 | if (skb) { | |
a292ca6e JK |
4061 | skb_trim(skb, 0); |
4062 | goto map_skb; | |
4063 | } | |
4064 | ||
89d71a66 | 4065 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
96838a40 | 4066 | if (unlikely(!skb)) { |
1da177e4 | 4067 | /* Better luck next round */ |
72d64a43 | 4068 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
4069 | break; |
4070 | } | |
4071 | ||
2648345f | 4072 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
4073 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
4074 | struct sk_buff *oldskb = skb; | |
2648345f MC |
4075 | DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes " |
4076 | "at %p\n", bufsz, skb->data); | |
4077 | /* Try again, without freeing the previous */ | |
89d71a66 | 4078 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
2648345f | 4079 | /* Failed allocation, critical failure */ |
1da177e4 LT |
4080 | if (!skb) { |
4081 | dev_kfree_skb(oldskb); | |
edbbb3ca | 4082 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
4083 | break; |
4084 | } | |
2648345f | 4085 | |
1da177e4 LT |
4086 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
4087 | /* give up */ | |
4088 | dev_kfree_skb(skb); | |
4089 | dev_kfree_skb(oldskb); | |
edbbb3ca | 4090 | adapter->alloc_rx_buff_failed++; |
1da177e4 | 4091 | break; /* while !buffer_info->skb */ |
1da177e4 | 4092 | } |
ca6f7224 CH |
4093 | |
4094 | /* Use new allocation */ | |
4095 | dev_kfree_skb(oldskb); | |
1da177e4 | 4096 | } |
1da177e4 LT |
4097 | buffer_info->skb = skb; |
4098 | buffer_info->length = adapter->rx_buffer_len; | |
a292ca6e | 4099 | map_skb: |
1da177e4 LT |
4100 | buffer_info->dma = pci_map_single(pdev, |
4101 | skb->data, | |
edbbb3ca | 4102 | buffer_info->length, |
1da177e4 LT |
4103 | PCI_DMA_FROMDEVICE); |
4104 | ||
edbbb3ca JB |
4105 | /* |
4106 | * XXX if it was allocated cleanly it will never map to a | |
4107 | * boundary crossing | |
4108 | */ | |
4109 | ||
2648345f MC |
4110 | /* Fix for errata 23, can't cross 64kB boundary */ |
4111 | if (!e1000_check_64k_bound(adapter, | |
4112 | (void *)(unsigned long)buffer_info->dma, | |
4113 | adapter->rx_buffer_len)) { | |
4114 | DPRINTK(RX_ERR, ERR, | |
4115 | "dma align check failed: %u bytes at %p\n", | |
4116 | adapter->rx_buffer_len, | |
4117 | (void *)(unsigned long)buffer_info->dma); | |
1da177e4 LT |
4118 | dev_kfree_skb(skb); |
4119 | buffer_info->skb = NULL; | |
4120 | ||
2648345f | 4121 | pci_unmap_single(pdev, buffer_info->dma, |
1da177e4 LT |
4122 | adapter->rx_buffer_len, |
4123 | PCI_DMA_FROMDEVICE); | |
679be3ba | 4124 | buffer_info->dma = 0; |
1da177e4 | 4125 | |
edbbb3ca | 4126 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
4127 | break; /* while !buffer_info->skb */ |
4128 | } | |
1da177e4 LT |
4129 | rx_desc = E1000_RX_DESC(*rx_ring, i); |
4130 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
4131 | ||
96838a40 JB |
4132 | if (unlikely(++i == rx_ring->count)) |
4133 | i = 0; | |
1da177e4 LT |
4134 | buffer_info = &rx_ring->buffer_info[i]; |
4135 | } | |
4136 | ||
b92ff8ee JB |
4137 | if (likely(rx_ring->next_to_use != i)) { |
4138 | rx_ring->next_to_use = i; | |
4139 | if (unlikely(i-- == 0)) | |
4140 | i = (rx_ring->count - 1); | |
4141 | ||
4142 | /* Force memory writes to complete before letting h/w | |
4143 | * know there are new descriptors to fetch. (Only | |
4144 | * applicable for weak-ordered memory model archs, | |
4145 | * such as IA-64). */ | |
4146 | wmb(); | |
1dc32918 | 4147 | writel(i, hw->hw_addr + rx_ring->rdt); |
b92ff8ee | 4148 | } |
1da177e4 LT |
4149 | } |
4150 | ||
4151 | /** | |
4152 | * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. | |
4153 | * @adapter: | |
4154 | **/ | |
4155 | ||
64798845 | 4156 | static void e1000_smartspeed(struct e1000_adapter *adapter) |
1da177e4 | 4157 | { |
1dc32918 | 4158 | struct e1000_hw *hw = &adapter->hw; |
406874a7 JP |
4159 | u16 phy_status; |
4160 | u16 phy_ctrl; | |
1da177e4 | 4161 | |
1dc32918 JP |
4162 | if ((hw->phy_type != e1000_phy_igp) || !hw->autoneg || |
4163 | !(hw->autoneg_advertised & ADVERTISE_1000_FULL)) | |
1da177e4 LT |
4164 | return; |
4165 | ||
96838a40 | 4166 | if (adapter->smartspeed == 0) { |
1da177e4 LT |
4167 | /* If Master/Slave config fault is asserted twice, |
4168 | * we assume back-to-back */ | |
1dc32918 | 4169 | e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); |
96838a40 | 4170 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1dc32918 | 4171 | e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_status); |
96838a40 | 4172 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1dc32918 | 4173 | e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl); |
96838a40 | 4174 | if (phy_ctrl & CR_1000T_MS_ENABLE) { |
1da177e4 | 4175 | phy_ctrl &= ~CR_1000T_MS_ENABLE; |
1dc32918 | 4176 | e1000_write_phy_reg(hw, PHY_1000T_CTRL, |
1da177e4 LT |
4177 | phy_ctrl); |
4178 | adapter->smartspeed++; | |
1dc32918 JP |
4179 | if (!e1000_phy_setup_autoneg(hw) && |
4180 | !e1000_read_phy_reg(hw, PHY_CTRL, | |
1da177e4 LT |
4181 | &phy_ctrl)) { |
4182 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
4183 | MII_CR_RESTART_AUTO_NEG); | |
1dc32918 | 4184 | e1000_write_phy_reg(hw, PHY_CTRL, |
1da177e4 LT |
4185 | phy_ctrl); |
4186 | } | |
4187 | } | |
4188 | return; | |
96838a40 | 4189 | } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { |
1da177e4 | 4190 | /* If still no link, perhaps using 2/3 pair cable */ |
1dc32918 | 4191 | e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_ctrl); |
1da177e4 | 4192 | phy_ctrl |= CR_1000T_MS_ENABLE; |
1dc32918 JP |
4193 | e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_ctrl); |
4194 | if (!e1000_phy_setup_autoneg(hw) && | |
4195 | !e1000_read_phy_reg(hw, PHY_CTRL, &phy_ctrl)) { | |
1da177e4 LT |
4196 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | |
4197 | MII_CR_RESTART_AUTO_NEG); | |
1dc32918 | 4198 | e1000_write_phy_reg(hw, PHY_CTRL, phy_ctrl); |
1da177e4 LT |
4199 | } |
4200 | } | |
4201 | /* Restart process after E1000_SMARTSPEED_MAX iterations */ | |
96838a40 | 4202 | if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX) |
1da177e4 LT |
4203 | adapter->smartspeed = 0; |
4204 | } | |
4205 | ||
4206 | /** | |
4207 | * e1000_ioctl - | |
4208 | * @netdev: | |
4209 | * @ifreq: | |
4210 | * @cmd: | |
4211 | **/ | |
4212 | ||
64798845 | 4213 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) |
1da177e4 LT |
4214 | { |
4215 | switch (cmd) { | |
4216 | case SIOCGMIIPHY: | |
4217 | case SIOCGMIIREG: | |
4218 | case SIOCSMIIREG: | |
4219 | return e1000_mii_ioctl(netdev, ifr, cmd); | |
4220 | default: | |
4221 | return -EOPNOTSUPP; | |
4222 | } | |
4223 | } | |
4224 | ||
4225 | /** | |
4226 | * e1000_mii_ioctl - | |
4227 | * @netdev: | |
4228 | * @ifreq: | |
4229 | * @cmd: | |
4230 | **/ | |
4231 | ||
64798845 JP |
4232 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, |
4233 | int cmd) | |
1da177e4 | 4234 | { |
60490fe0 | 4235 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4236 | struct e1000_hw *hw = &adapter->hw; |
1da177e4 LT |
4237 | struct mii_ioctl_data *data = if_mii(ifr); |
4238 | int retval; | |
406874a7 JP |
4239 | u16 mii_reg; |
4240 | u16 spddplx; | |
97876fc6 | 4241 | unsigned long flags; |
1da177e4 | 4242 | |
1dc32918 | 4243 | if (hw->media_type != e1000_media_type_copper) |
1da177e4 LT |
4244 | return -EOPNOTSUPP; |
4245 | ||
4246 | switch (cmd) { | |
4247 | case SIOCGMIIPHY: | |
1dc32918 | 4248 | data->phy_id = hw->phy_addr; |
1da177e4 LT |
4249 | break; |
4250 | case SIOCGMIIREG: | |
97876fc6 | 4251 | spin_lock_irqsave(&adapter->stats_lock, flags); |
1dc32918 | 4252 | if (e1000_read_phy_reg(hw, data->reg_num & 0x1F, |
97876fc6 MC |
4253 | &data->val_out)) { |
4254 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4255 | return -EIO; |
97876fc6 MC |
4256 | } |
4257 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 LT |
4258 | break; |
4259 | case SIOCSMIIREG: | |
96838a40 | 4260 | if (data->reg_num & ~(0x1F)) |
1da177e4 LT |
4261 | return -EFAULT; |
4262 | mii_reg = data->val_in; | |
97876fc6 | 4263 | spin_lock_irqsave(&adapter->stats_lock, flags); |
1dc32918 | 4264 | if (e1000_write_phy_reg(hw, data->reg_num, |
97876fc6 MC |
4265 | mii_reg)) { |
4266 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4267 | return -EIO; |
97876fc6 | 4268 | } |
f0163ac4 | 4269 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
1dc32918 | 4270 | if (hw->media_type == e1000_media_type_copper) { |
1da177e4 LT |
4271 | switch (data->reg_num) { |
4272 | case PHY_CTRL: | |
96838a40 | 4273 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4274 | break; |
96838a40 | 4275 | if (mii_reg & MII_CR_AUTO_NEG_EN) { |
1dc32918 JP |
4276 | hw->autoneg = 1; |
4277 | hw->autoneg_advertised = 0x2F; | |
1da177e4 LT |
4278 | } else { |
4279 | if (mii_reg & 0x40) | |
4280 | spddplx = SPEED_1000; | |
4281 | else if (mii_reg & 0x2000) | |
4282 | spddplx = SPEED_100; | |
4283 | else | |
4284 | spddplx = SPEED_10; | |
4285 | spddplx += (mii_reg & 0x100) | |
cb764326 JK |
4286 | ? DUPLEX_FULL : |
4287 | DUPLEX_HALF; | |
1da177e4 LT |
4288 | retval = e1000_set_spd_dplx(adapter, |
4289 | spddplx); | |
f0163ac4 | 4290 | if (retval) |
1da177e4 LT |
4291 | return retval; |
4292 | } | |
2db10a08 AK |
4293 | if (netif_running(adapter->netdev)) |
4294 | e1000_reinit_locked(adapter); | |
4295 | else | |
1da177e4 LT |
4296 | e1000_reset(adapter); |
4297 | break; | |
4298 | case M88E1000_PHY_SPEC_CTRL: | |
4299 | case M88E1000_EXT_PHY_SPEC_CTRL: | |
1dc32918 | 4300 | if (e1000_phy_reset(hw)) |
1da177e4 LT |
4301 | return -EIO; |
4302 | break; | |
4303 | } | |
4304 | } else { | |
4305 | switch (data->reg_num) { | |
4306 | case PHY_CTRL: | |
96838a40 | 4307 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4308 | break; |
2db10a08 AK |
4309 | if (netif_running(adapter->netdev)) |
4310 | e1000_reinit_locked(adapter); | |
4311 | else | |
1da177e4 LT |
4312 | e1000_reset(adapter); |
4313 | break; | |
4314 | } | |
4315 | } | |
4316 | break; | |
4317 | default: | |
4318 | return -EOPNOTSUPP; | |
4319 | } | |
4320 | return E1000_SUCCESS; | |
4321 | } | |
4322 | ||
64798845 | 4323 | void e1000_pci_set_mwi(struct e1000_hw *hw) |
1da177e4 LT |
4324 | { |
4325 | struct e1000_adapter *adapter = hw->back; | |
2648345f | 4326 | int ret_val = pci_set_mwi(adapter->pdev); |
1da177e4 | 4327 | |
96838a40 | 4328 | if (ret_val) |
2648345f | 4329 | DPRINTK(PROBE, ERR, "Error in setting MWI\n"); |
1da177e4 LT |
4330 | } |
4331 | ||
64798845 | 4332 | void e1000_pci_clear_mwi(struct e1000_hw *hw) |
1da177e4 LT |
4333 | { |
4334 | struct e1000_adapter *adapter = hw->back; | |
4335 | ||
4336 | pci_clear_mwi(adapter->pdev); | |
4337 | } | |
4338 | ||
64798845 | 4339 | int e1000_pcix_get_mmrbc(struct e1000_hw *hw) |
007755eb PO |
4340 | { |
4341 | struct e1000_adapter *adapter = hw->back; | |
4342 | return pcix_get_mmrbc(adapter->pdev); | |
4343 | } | |
4344 | ||
64798845 | 4345 | void e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc) |
007755eb PO |
4346 | { |
4347 | struct e1000_adapter *adapter = hw->back; | |
4348 | pcix_set_mmrbc(adapter->pdev, mmrbc); | |
4349 | } | |
4350 | ||
64798845 | 4351 | void e1000_io_write(struct e1000_hw *hw, unsigned long port, u32 value) |
1da177e4 LT |
4352 | { |
4353 | outl(value, port); | |
4354 | } | |
4355 | ||
64798845 JP |
4356 | static void e1000_vlan_rx_register(struct net_device *netdev, |
4357 | struct vlan_group *grp) | |
1da177e4 | 4358 | { |
60490fe0 | 4359 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4360 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 4361 | u32 ctrl, rctl; |
1da177e4 | 4362 | |
9150b76a JB |
4363 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4364 | e1000_irq_disable(adapter); | |
1da177e4 LT |
4365 | adapter->vlgrp = grp; |
4366 | ||
96838a40 | 4367 | if (grp) { |
1da177e4 | 4368 | /* enable VLAN tag insert/strip */ |
1dc32918 | 4369 | ctrl = er32(CTRL); |
1da177e4 | 4370 | ctrl |= E1000_CTRL_VME; |
1dc32918 | 4371 | ew32(CTRL, ctrl); |
1da177e4 | 4372 | |
1532ecea JB |
4373 | /* enable VLAN receive filtering */ |
4374 | rctl = er32(RCTL); | |
4375 | rctl &= ~E1000_RCTL_CFIEN; | |
4376 | if (!(netdev->flags & IFF_PROMISC)) | |
4377 | rctl |= E1000_RCTL_VFE; | |
4378 | ew32(RCTL, rctl); | |
4379 | e1000_update_mng_vlan(adapter); | |
1da177e4 LT |
4380 | } else { |
4381 | /* disable VLAN tag insert/strip */ | |
1dc32918 | 4382 | ctrl = er32(CTRL); |
1da177e4 | 4383 | ctrl &= ~E1000_CTRL_VME; |
1dc32918 | 4384 | ew32(CTRL, ctrl); |
1da177e4 | 4385 | |
1532ecea JB |
4386 | /* disable VLAN receive filtering */ |
4387 | rctl = er32(RCTL); | |
4388 | rctl &= ~E1000_RCTL_VFE; | |
4389 | ew32(RCTL, rctl); | |
fd38d7a0 | 4390 | |
1532ecea | 4391 | if (adapter->mng_vlan_id != (u16)E1000_MNG_VLAN_NONE) { |
120a5d0d | 4392 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
1532ecea | 4393 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
cd94dd0b | 4394 | } |
1da177e4 LT |
4395 | } |
4396 | ||
9150b76a JB |
4397 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4398 | e1000_irq_enable(adapter); | |
1da177e4 LT |
4399 | } |
4400 | ||
64798845 | 4401 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid) |
1da177e4 | 4402 | { |
60490fe0 | 4403 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4404 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 4405 | u32 vfta, index; |
96838a40 | 4406 | |
1dc32918 | 4407 | if ((hw->mng_cookie.status & |
96838a40 JB |
4408 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && |
4409 | (vid == adapter->mng_vlan_id)) | |
2d7edb92 | 4410 | return; |
1da177e4 LT |
4411 | /* add VID to filter table */ |
4412 | index = (vid >> 5) & 0x7F; | |
1dc32918 | 4413 | vfta = E1000_READ_REG_ARRAY(hw, VFTA, index); |
1da177e4 | 4414 | vfta |= (1 << (vid & 0x1F)); |
1dc32918 | 4415 | e1000_write_vfta(hw, index, vfta); |
1da177e4 LT |
4416 | } |
4417 | ||
64798845 | 4418 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) |
1da177e4 | 4419 | { |
60490fe0 | 4420 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4421 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 4422 | u32 vfta, index; |
1da177e4 | 4423 | |
9150b76a JB |
4424 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4425 | e1000_irq_disable(adapter); | |
5c15bdec | 4426 | vlan_group_set_device(adapter->vlgrp, vid, NULL); |
9150b76a JB |
4427 | if (!test_bit(__E1000_DOWN, &adapter->flags)) |
4428 | e1000_irq_enable(adapter); | |
1da177e4 LT |
4429 | |
4430 | /* remove VID from filter table */ | |
4431 | index = (vid >> 5) & 0x7F; | |
1dc32918 | 4432 | vfta = E1000_READ_REG_ARRAY(hw, VFTA, index); |
1da177e4 | 4433 | vfta &= ~(1 << (vid & 0x1F)); |
1dc32918 | 4434 | e1000_write_vfta(hw, index, vfta); |
1da177e4 LT |
4435 | } |
4436 | ||
64798845 | 4437 | static void e1000_restore_vlan(struct e1000_adapter *adapter) |
1da177e4 LT |
4438 | { |
4439 | e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
4440 | ||
96838a40 | 4441 | if (adapter->vlgrp) { |
406874a7 | 4442 | u16 vid; |
96838a40 | 4443 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { |
5c15bdec | 4444 | if (!vlan_group_get_device(adapter->vlgrp, vid)) |
1da177e4 LT |
4445 | continue; |
4446 | e1000_vlan_rx_add_vid(adapter->netdev, vid); | |
4447 | } | |
4448 | } | |
4449 | } | |
4450 | ||
64798845 | 4451 | int e1000_set_spd_dplx(struct e1000_adapter *adapter, u16 spddplx) |
1da177e4 | 4452 | { |
1dc32918 JP |
4453 | struct e1000_hw *hw = &adapter->hw; |
4454 | ||
4455 | hw->autoneg = 0; | |
1da177e4 | 4456 | |
6921368f | 4457 | /* Fiber NICs only allow 1000 gbps Full duplex */ |
1dc32918 | 4458 | if ((hw->media_type == e1000_media_type_fiber) && |
6921368f MC |
4459 | spddplx != (SPEED_1000 + DUPLEX_FULL)) { |
4460 | DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); | |
4461 | return -EINVAL; | |
4462 | } | |
4463 | ||
96838a40 | 4464 | switch (spddplx) { |
1da177e4 | 4465 | case SPEED_10 + DUPLEX_HALF: |
1dc32918 | 4466 | hw->forced_speed_duplex = e1000_10_half; |
1da177e4 LT |
4467 | break; |
4468 | case SPEED_10 + DUPLEX_FULL: | |
1dc32918 | 4469 | hw->forced_speed_duplex = e1000_10_full; |
1da177e4 LT |
4470 | break; |
4471 | case SPEED_100 + DUPLEX_HALF: | |
1dc32918 | 4472 | hw->forced_speed_duplex = e1000_100_half; |
1da177e4 LT |
4473 | break; |
4474 | case SPEED_100 + DUPLEX_FULL: | |
1dc32918 | 4475 | hw->forced_speed_duplex = e1000_100_full; |
1da177e4 LT |
4476 | break; |
4477 | case SPEED_1000 + DUPLEX_FULL: | |
1dc32918 JP |
4478 | hw->autoneg = 1; |
4479 | hw->autoneg_advertised = ADVERTISE_1000_FULL; | |
1da177e4 LT |
4480 | break; |
4481 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ | |
4482 | default: | |
2648345f | 4483 | DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); |
1da177e4 LT |
4484 | return -EINVAL; |
4485 | } | |
4486 | return 0; | |
4487 | } | |
4488 | ||
b43fcd7d | 4489 | static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake) |
1da177e4 LT |
4490 | { |
4491 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 4492 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4493 | struct e1000_hw *hw = &adapter->hw; |
406874a7 JP |
4494 | u32 ctrl, ctrl_ext, rctl, status; |
4495 | u32 wufc = adapter->wol; | |
6fdfef16 | 4496 | #ifdef CONFIG_PM |
240b1710 | 4497 | int retval = 0; |
6fdfef16 | 4498 | #endif |
1da177e4 LT |
4499 | |
4500 | netif_device_detach(netdev); | |
4501 | ||
2db10a08 AK |
4502 | if (netif_running(netdev)) { |
4503 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->flags)); | |
1da177e4 | 4504 | e1000_down(adapter); |
2db10a08 | 4505 | } |
1da177e4 | 4506 | |
2f82665f | 4507 | #ifdef CONFIG_PM |
1d33e9c6 | 4508 | retval = pci_save_state(pdev); |
2f82665f JB |
4509 | if (retval) |
4510 | return retval; | |
4511 | #endif | |
4512 | ||
1dc32918 | 4513 | status = er32(STATUS); |
96838a40 | 4514 | if (status & E1000_STATUS_LU) |
1da177e4 LT |
4515 | wufc &= ~E1000_WUFC_LNKC; |
4516 | ||
96838a40 | 4517 | if (wufc) { |
1da177e4 | 4518 | e1000_setup_rctl(adapter); |
db0ce50d | 4519 | e1000_set_rx_mode(netdev); |
1da177e4 LT |
4520 | |
4521 | /* turn on all-multi mode if wake on multicast is enabled */ | |
120cd576 | 4522 | if (wufc & E1000_WUFC_MC) { |
1dc32918 | 4523 | rctl = er32(RCTL); |
1da177e4 | 4524 | rctl |= E1000_RCTL_MPE; |
1dc32918 | 4525 | ew32(RCTL, rctl); |
1da177e4 LT |
4526 | } |
4527 | ||
1dc32918 JP |
4528 | if (hw->mac_type >= e1000_82540) { |
4529 | ctrl = er32(CTRL); | |
1da177e4 LT |
4530 | /* advertise wake from D3Cold */ |
4531 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
4532 | /* phy power management enable */ | |
4533 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
4534 | ctrl |= E1000_CTRL_ADVD3WUC | | |
4535 | E1000_CTRL_EN_PHY_PWR_MGMT; | |
1dc32918 | 4536 | ew32(CTRL, ctrl); |
1da177e4 LT |
4537 | } |
4538 | ||
1dc32918 | 4539 | if (hw->media_type == e1000_media_type_fiber || |
1532ecea | 4540 | hw->media_type == e1000_media_type_internal_serdes) { |
1da177e4 | 4541 | /* keep the laser running in D3 */ |
1dc32918 | 4542 | ctrl_ext = er32(CTRL_EXT); |
1da177e4 | 4543 | ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; |
1dc32918 | 4544 | ew32(CTRL_EXT, ctrl_ext); |
1da177e4 LT |
4545 | } |
4546 | ||
1dc32918 JP |
4547 | ew32(WUC, E1000_WUC_PME_EN); |
4548 | ew32(WUFC, wufc); | |
1da177e4 | 4549 | } else { |
1dc32918 JP |
4550 | ew32(WUC, 0); |
4551 | ew32(WUFC, 0); | |
1da177e4 LT |
4552 | } |
4553 | ||
0fccd0e9 JG |
4554 | e1000_release_manageability(adapter); |
4555 | ||
b43fcd7d RW |
4556 | *enable_wake = !!wufc; |
4557 | ||
0fccd0e9 | 4558 | /* make sure adapter isn't asleep if manageability is enabled */ |
b43fcd7d RW |
4559 | if (adapter->en_mng_pt) |
4560 | *enable_wake = true; | |
1da177e4 | 4561 | |
edd106fc AK |
4562 | if (netif_running(netdev)) |
4563 | e1000_free_irq(adapter); | |
4564 | ||
1da177e4 | 4565 | pci_disable_device(pdev); |
240b1710 | 4566 | |
1da177e4 LT |
4567 | return 0; |
4568 | } | |
4569 | ||
2f82665f | 4570 | #ifdef CONFIG_PM |
b43fcd7d RW |
4571 | static int e1000_suspend(struct pci_dev *pdev, pm_message_t state) |
4572 | { | |
4573 | int retval; | |
4574 | bool wake; | |
4575 | ||
4576 | retval = __e1000_shutdown(pdev, &wake); | |
4577 | if (retval) | |
4578 | return retval; | |
4579 | ||
4580 | if (wake) { | |
4581 | pci_prepare_to_sleep(pdev); | |
4582 | } else { | |
4583 | pci_wake_from_d3(pdev, false); | |
4584 | pci_set_power_state(pdev, PCI_D3hot); | |
4585 | } | |
4586 | ||
4587 | return 0; | |
4588 | } | |
4589 | ||
64798845 | 4590 | static int e1000_resume(struct pci_dev *pdev) |
1da177e4 LT |
4591 | { |
4592 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 4593 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4594 | struct e1000_hw *hw = &adapter->hw; |
406874a7 | 4595 | u32 err; |
1da177e4 | 4596 | |
d0e027db | 4597 | pci_set_power_state(pdev, PCI_D0); |
1d33e9c6 | 4598 | pci_restore_state(pdev); |
81250297 TI |
4599 | |
4600 | if (adapter->need_ioport) | |
4601 | err = pci_enable_device(pdev); | |
4602 | else | |
4603 | err = pci_enable_device_mem(pdev); | |
c7be73bc | 4604 | if (err) { |
3d1dd8cb AK |
4605 | printk(KERN_ERR "e1000: Cannot enable PCI device from suspend\n"); |
4606 | return err; | |
4607 | } | |
a4cb847d | 4608 | pci_set_master(pdev); |
1da177e4 | 4609 | |
d0e027db AK |
4610 | pci_enable_wake(pdev, PCI_D3hot, 0); |
4611 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
1da177e4 | 4612 | |
c7be73bc JP |
4613 | if (netif_running(netdev)) { |
4614 | err = e1000_request_irq(adapter); | |
4615 | if (err) | |
4616 | return err; | |
4617 | } | |
edd106fc AK |
4618 | |
4619 | e1000_power_up_phy(adapter); | |
1da177e4 | 4620 | e1000_reset(adapter); |
1dc32918 | 4621 | ew32(WUS, ~0); |
1da177e4 | 4622 | |
0fccd0e9 JG |
4623 | e1000_init_manageability(adapter); |
4624 | ||
96838a40 | 4625 | if (netif_running(netdev)) |
1da177e4 LT |
4626 | e1000_up(adapter); |
4627 | ||
4628 | netif_device_attach(netdev); | |
4629 | ||
1da177e4 LT |
4630 | return 0; |
4631 | } | |
4632 | #endif | |
c653e635 AK |
4633 | |
4634 | static void e1000_shutdown(struct pci_dev *pdev) | |
4635 | { | |
b43fcd7d RW |
4636 | bool wake; |
4637 | ||
4638 | __e1000_shutdown(pdev, &wake); | |
4639 | ||
4640 | if (system_state == SYSTEM_POWER_OFF) { | |
4641 | pci_wake_from_d3(pdev, wake); | |
4642 | pci_set_power_state(pdev, PCI_D3hot); | |
4643 | } | |
c653e635 AK |
4644 | } |
4645 | ||
1da177e4 LT |
4646 | #ifdef CONFIG_NET_POLL_CONTROLLER |
4647 | /* | |
4648 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
4649 | * without having to re-enable interrupts. It's not called while | |
4650 | * the interrupt routine is executing. | |
4651 | */ | |
64798845 | 4652 | static void e1000_netpoll(struct net_device *netdev) |
1da177e4 | 4653 | { |
60490fe0 | 4654 | struct e1000_adapter *adapter = netdev_priv(netdev); |
d3d9e484 | 4655 | |
1da177e4 | 4656 | disable_irq(adapter->pdev->irq); |
7d12e780 | 4657 | e1000_intr(adapter->pdev->irq, netdev); |
1da177e4 LT |
4658 | enable_irq(adapter->pdev->irq); |
4659 | } | |
4660 | #endif | |
4661 | ||
9026729b AK |
4662 | /** |
4663 | * e1000_io_error_detected - called when PCI error is detected | |
4664 | * @pdev: Pointer to PCI device | |
120a5d0d | 4665 | * @state: The current pci connection state |
9026729b AK |
4666 | * |
4667 | * This function is called after a PCI bus error affecting | |
4668 | * this device has been detected. | |
4669 | */ | |
64798845 JP |
4670 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, |
4671 | pci_channel_state_t state) | |
9026729b AK |
4672 | { |
4673 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4cf1653a | 4674 | struct e1000_adapter *adapter = netdev_priv(netdev); |
9026729b AK |
4675 | |
4676 | netif_device_detach(netdev); | |
4677 | ||
eab63302 AD |
4678 | if (state == pci_channel_io_perm_failure) |
4679 | return PCI_ERS_RESULT_DISCONNECT; | |
4680 | ||
9026729b AK |
4681 | if (netif_running(netdev)) |
4682 | e1000_down(adapter); | |
72e8d6bb | 4683 | pci_disable_device(pdev); |
9026729b AK |
4684 | |
4685 | /* Request a slot slot reset. */ | |
4686 | return PCI_ERS_RESULT_NEED_RESET; | |
4687 | } | |
4688 | ||
4689 | /** | |
4690 | * e1000_io_slot_reset - called after the pci bus has been reset. | |
4691 | * @pdev: Pointer to PCI device | |
4692 | * | |
4693 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
4694 | * resembles the first-half of the e1000_resume routine. | |
4695 | */ | |
4696 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) | |
4697 | { | |
4698 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4cf1653a | 4699 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1dc32918 | 4700 | struct e1000_hw *hw = &adapter->hw; |
81250297 | 4701 | int err; |
9026729b | 4702 | |
81250297 TI |
4703 | if (adapter->need_ioport) |
4704 | err = pci_enable_device(pdev); | |
4705 | else | |
4706 | err = pci_enable_device_mem(pdev); | |
4707 | if (err) { | |
9026729b AK |
4708 | printk(KERN_ERR "e1000: Cannot re-enable PCI device after reset.\n"); |
4709 | return PCI_ERS_RESULT_DISCONNECT; | |
4710 | } | |
4711 | pci_set_master(pdev); | |
4712 | ||
dbf38c94 LV |
4713 | pci_enable_wake(pdev, PCI_D3hot, 0); |
4714 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
9026729b | 4715 | |
9026729b | 4716 | e1000_reset(adapter); |
1dc32918 | 4717 | ew32(WUS, ~0); |
9026729b AK |
4718 | |
4719 | return PCI_ERS_RESULT_RECOVERED; | |
4720 | } | |
4721 | ||
4722 | /** | |
4723 | * e1000_io_resume - called when traffic can start flowing again. | |
4724 | * @pdev: Pointer to PCI device | |
4725 | * | |
4726 | * This callback is called when the error recovery driver tells us that | |
4727 | * its OK to resume normal operation. Implementation resembles the | |
4728 | * second-half of the e1000_resume routine. | |
4729 | */ | |
4730 | static void e1000_io_resume(struct pci_dev *pdev) | |
4731 | { | |
4732 | struct net_device *netdev = pci_get_drvdata(pdev); | |
4cf1653a | 4733 | struct e1000_adapter *adapter = netdev_priv(netdev); |
0fccd0e9 JG |
4734 | |
4735 | e1000_init_manageability(adapter); | |
9026729b AK |
4736 | |
4737 | if (netif_running(netdev)) { | |
4738 | if (e1000_up(adapter)) { | |
4739 | printk("e1000: can't bring device back up after reset\n"); | |
4740 | return; | |
4741 | } | |
4742 | } | |
4743 | ||
4744 | netif_device_attach(netdev); | |
9026729b AK |
4745 | } |
4746 | ||
1da177e4 | 4747 | /* e1000_main.c */ |