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1da177e4 LT |
1 | /******************************************************************************* |
2 | ||
3 | ||
2648345f | 4 | Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved. |
1da177e4 LT |
5 | |
6 | This program is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU General Public License as published by the Free | |
8 | Software Foundation; either version 2 of the License, or (at your option) | |
9 | any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, but WITHOUT | |
12 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
14 | more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License along with | |
17 | this program; if not, write to the Free Software Foundation, Inc., 59 | |
18 | Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
19 | ||
20 | The full GNU General Public License is included in this distribution in the | |
21 | file called LICENSE. | |
22 | ||
23 | Contact Information: | |
24 | Linux NICS <linux.nics@intel.com> | |
25 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
26 | ||
27 | *******************************************************************************/ | |
28 | ||
29 | #include "e1000.h" | |
30 | ||
31 | /* Change Log | |
2b02893e MC |
32 | * 6.0.58 4/20/05 |
33 | * o Accepted ethtool cleanup patch from Stephen Hemminger | |
2648345f MC |
34 | * 6.0.44+ 2/15/05 |
35 | * o applied Anton's patch to resolve tx hang in hardware | |
36 | * o Applied Andrew Mortons patch - e1000 stops working after resume | |
1da177e4 LT |
37 | */ |
38 | ||
39 | char e1000_driver_name[] = "e1000"; | |
40 | char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver"; | |
41 | #ifndef CONFIG_E1000_NAPI | |
42 | #define DRIVERNAPI | |
43 | #else | |
44 | #define DRIVERNAPI "-NAPI" | |
45 | #endif | |
2b02893e | 46 | #define DRV_VERSION "6.0.60-k2"DRIVERNAPI |
1da177e4 | 47 | char e1000_driver_version[] = DRV_VERSION; |
2b02893e | 48 | char e1000_copyright[] = "Copyright (c) 1999-2005 Intel Corporation."; |
1da177e4 LT |
49 | |
50 | /* e1000_pci_tbl - PCI Device ID Table | |
51 | * | |
52 | * Last entry must be all 0s | |
53 | * | |
54 | * Macro expands to... | |
55 | * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)} | |
56 | */ | |
57 | static struct pci_device_id e1000_pci_tbl[] = { | |
58 | INTEL_E1000_ETHERNET_DEVICE(0x1000), | |
59 | INTEL_E1000_ETHERNET_DEVICE(0x1001), | |
60 | INTEL_E1000_ETHERNET_DEVICE(0x1004), | |
61 | INTEL_E1000_ETHERNET_DEVICE(0x1008), | |
62 | INTEL_E1000_ETHERNET_DEVICE(0x1009), | |
63 | INTEL_E1000_ETHERNET_DEVICE(0x100C), | |
64 | INTEL_E1000_ETHERNET_DEVICE(0x100D), | |
65 | INTEL_E1000_ETHERNET_DEVICE(0x100E), | |
66 | INTEL_E1000_ETHERNET_DEVICE(0x100F), | |
67 | INTEL_E1000_ETHERNET_DEVICE(0x1010), | |
68 | INTEL_E1000_ETHERNET_DEVICE(0x1011), | |
69 | INTEL_E1000_ETHERNET_DEVICE(0x1012), | |
70 | INTEL_E1000_ETHERNET_DEVICE(0x1013), | |
71 | INTEL_E1000_ETHERNET_DEVICE(0x1014), | |
72 | INTEL_E1000_ETHERNET_DEVICE(0x1015), | |
73 | INTEL_E1000_ETHERNET_DEVICE(0x1016), | |
74 | INTEL_E1000_ETHERNET_DEVICE(0x1017), | |
75 | INTEL_E1000_ETHERNET_DEVICE(0x1018), | |
76 | INTEL_E1000_ETHERNET_DEVICE(0x1019), | |
2648345f | 77 | INTEL_E1000_ETHERNET_DEVICE(0x101A), |
1da177e4 LT |
78 | INTEL_E1000_ETHERNET_DEVICE(0x101D), |
79 | INTEL_E1000_ETHERNET_DEVICE(0x101E), | |
80 | INTEL_E1000_ETHERNET_DEVICE(0x1026), | |
81 | INTEL_E1000_ETHERNET_DEVICE(0x1027), | |
82 | INTEL_E1000_ETHERNET_DEVICE(0x1028), | |
83 | INTEL_E1000_ETHERNET_DEVICE(0x1075), | |
84 | INTEL_E1000_ETHERNET_DEVICE(0x1076), | |
85 | INTEL_E1000_ETHERNET_DEVICE(0x1077), | |
86 | INTEL_E1000_ETHERNET_DEVICE(0x1078), | |
87 | INTEL_E1000_ETHERNET_DEVICE(0x1079), | |
88 | INTEL_E1000_ETHERNET_DEVICE(0x107A), | |
89 | INTEL_E1000_ETHERNET_DEVICE(0x107B), | |
90 | INTEL_E1000_ETHERNET_DEVICE(0x107C), | |
91 | INTEL_E1000_ETHERNET_DEVICE(0x108A), | |
2648345f MC |
92 | INTEL_E1000_ETHERNET_DEVICE(0x108B), |
93 | INTEL_E1000_ETHERNET_DEVICE(0x108C), | |
94 | INTEL_E1000_ETHERNET_DEVICE(0x1099), | |
1da177e4 LT |
95 | /* required last entry */ |
96 | {0,} | |
97 | }; | |
98 | ||
99 | MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); | |
100 | ||
101 | int e1000_up(struct e1000_adapter *adapter); | |
102 | void e1000_down(struct e1000_adapter *adapter); | |
103 | void e1000_reset(struct e1000_adapter *adapter); | |
104 | int e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx); | |
105 | int e1000_setup_tx_resources(struct e1000_adapter *adapter); | |
106 | int e1000_setup_rx_resources(struct e1000_adapter *adapter); | |
107 | void e1000_free_tx_resources(struct e1000_adapter *adapter); | |
108 | void e1000_free_rx_resources(struct e1000_adapter *adapter); | |
109 | void e1000_update_stats(struct e1000_adapter *adapter); | |
110 | ||
111 | /* Local Function Prototypes */ | |
112 | ||
113 | static int e1000_init_module(void); | |
114 | static void e1000_exit_module(void); | |
115 | static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent); | |
116 | static void __devexit e1000_remove(struct pci_dev *pdev); | |
117 | static int e1000_sw_init(struct e1000_adapter *adapter); | |
118 | static int e1000_open(struct net_device *netdev); | |
119 | static int e1000_close(struct net_device *netdev); | |
120 | static void e1000_configure_tx(struct e1000_adapter *adapter); | |
121 | static void e1000_configure_rx(struct e1000_adapter *adapter); | |
122 | static void e1000_setup_rctl(struct e1000_adapter *adapter); | |
123 | static void e1000_clean_tx_ring(struct e1000_adapter *adapter); | |
124 | static void e1000_clean_rx_ring(struct e1000_adapter *adapter); | |
125 | static void e1000_set_multi(struct net_device *netdev); | |
126 | static void e1000_update_phy_info(unsigned long data); | |
127 | static void e1000_watchdog(unsigned long data); | |
128 | static void e1000_watchdog_task(struct e1000_adapter *adapter); | |
129 | static void e1000_82547_tx_fifo_stall(unsigned long data); | |
130 | static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev); | |
131 | static struct net_device_stats * e1000_get_stats(struct net_device *netdev); | |
132 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu); | |
133 | static int e1000_set_mac(struct net_device *netdev, void *p); | |
134 | static irqreturn_t e1000_intr(int irq, void *data, struct pt_regs *regs); | |
135 | static boolean_t e1000_clean_tx_irq(struct e1000_adapter *adapter); | |
136 | #ifdef CONFIG_E1000_NAPI | |
137 | static int e1000_clean(struct net_device *netdev, int *budget); | |
138 | static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter, | |
139 | int *work_done, int work_to_do); | |
2d7edb92 MC |
140 | static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
141 | int *work_done, int work_to_do); | |
1da177e4 LT |
142 | #else |
143 | static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter); | |
2d7edb92 | 144 | static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter); |
1da177e4 LT |
145 | #endif |
146 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter); | |
2d7edb92 | 147 | static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter); |
1da177e4 LT |
148 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); |
149 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
150 | int cmd); | |
151 | void e1000_set_ethtool_ops(struct net_device *netdev); | |
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); | |
155 | static void e1000_tx_timeout_task(struct net_device *dev); | |
156 | static void e1000_smartspeed(struct e1000_adapter *adapter); | |
157 | static inline int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, | |
158 | struct sk_buff *skb); | |
159 | ||
160 | static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp); | |
161 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid); | |
162 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid); | |
163 | static void e1000_restore_vlan(struct e1000_adapter *adapter); | |
164 | ||
1da177e4 LT |
165 | static int e1000_suspend(struct pci_dev *pdev, uint32_t state); |
166 | #ifdef CONFIG_PM | |
167 | static int e1000_resume(struct pci_dev *pdev); | |
168 | #endif | |
169 | ||
170 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
171 | /* for netdump / net console */ | |
172 | static void e1000_netpoll (struct net_device *netdev); | |
173 | #endif | |
174 | ||
1da177e4 LT |
175 | /* Exported from other modules */ |
176 | ||
177 | extern void e1000_check_options(struct e1000_adapter *adapter); | |
178 | ||
179 | static struct pci_driver e1000_driver = { | |
180 | .name = e1000_driver_name, | |
181 | .id_table = e1000_pci_tbl, | |
182 | .probe = e1000_probe, | |
183 | .remove = __devexit_p(e1000_remove), | |
184 | /* Power Managment Hooks */ | |
185 | #ifdef CONFIG_PM | |
186 | .suspend = e1000_suspend, | |
187 | .resume = e1000_resume | |
188 | #endif | |
189 | }; | |
190 | ||
191 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
192 | MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); | |
193 | MODULE_LICENSE("GPL"); | |
194 | MODULE_VERSION(DRV_VERSION); | |
195 | ||
196 | static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; | |
197 | module_param(debug, int, 0); | |
198 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
199 | ||
200 | /** | |
201 | * e1000_init_module - Driver Registration Routine | |
202 | * | |
203 | * e1000_init_module is the first routine called when the driver is | |
204 | * loaded. All it does is register with the PCI subsystem. | |
205 | **/ | |
206 | ||
207 | static int __init | |
208 | e1000_init_module(void) | |
209 | { | |
210 | int ret; | |
211 | printk(KERN_INFO "%s - version %s\n", | |
212 | e1000_driver_string, e1000_driver_version); | |
213 | ||
214 | printk(KERN_INFO "%s\n", e1000_copyright); | |
215 | ||
216 | ret = pci_module_init(&e1000_driver); | |
8b378def | 217 | |
1da177e4 LT |
218 | return ret; |
219 | } | |
220 | ||
221 | module_init(e1000_init_module); | |
222 | ||
223 | /** | |
224 | * e1000_exit_module - Driver Exit Cleanup Routine | |
225 | * | |
226 | * e1000_exit_module is called just before the driver is removed | |
227 | * from memory. | |
228 | **/ | |
229 | ||
230 | static void __exit | |
231 | e1000_exit_module(void) | |
232 | { | |
1da177e4 LT |
233 | pci_unregister_driver(&e1000_driver); |
234 | } | |
235 | ||
236 | module_exit(e1000_exit_module); | |
237 | ||
238 | /** | |
239 | * e1000_irq_disable - Mask off interrupt generation on the NIC | |
240 | * @adapter: board private structure | |
241 | **/ | |
242 | ||
243 | static inline void | |
244 | e1000_irq_disable(struct e1000_adapter *adapter) | |
245 | { | |
246 | atomic_inc(&adapter->irq_sem); | |
247 | E1000_WRITE_REG(&adapter->hw, IMC, ~0); | |
248 | E1000_WRITE_FLUSH(&adapter->hw); | |
249 | synchronize_irq(adapter->pdev->irq); | |
250 | } | |
251 | ||
252 | /** | |
253 | * e1000_irq_enable - Enable default interrupt generation settings | |
254 | * @adapter: board private structure | |
255 | **/ | |
256 | ||
257 | static inline void | |
258 | e1000_irq_enable(struct e1000_adapter *adapter) | |
259 | { | |
260 | if(likely(atomic_dec_and_test(&adapter->irq_sem))) { | |
261 | E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK); | |
262 | E1000_WRITE_FLUSH(&adapter->hw); | |
263 | } | |
264 | } | |
2d7edb92 MC |
265 | void |
266 | e1000_update_mng_vlan(struct e1000_adapter *adapter) | |
267 | { | |
268 | struct net_device *netdev = adapter->netdev; | |
269 | uint16_t vid = adapter->hw.mng_cookie.vlan_id; | |
270 | uint16_t old_vid = adapter->mng_vlan_id; | |
271 | if(adapter->vlgrp) { | |
272 | if(!adapter->vlgrp->vlan_devices[vid]) { | |
273 | if(adapter->hw.mng_cookie.status & | |
274 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) { | |
275 | e1000_vlan_rx_add_vid(netdev, vid); | |
276 | adapter->mng_vlan_id = vid; | |
277 | } else | |
278 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
279 | ||
280 | if((old_vid != (uint16_t)E1000_MNG_VLAN_NONE) && | |
281 | (vid != old_vid) && | |
282 | !adapter->vlgrp->vlan_devices[old_vid]) | |
283 | e1000_vlan_rx_kill_vid(netdev, old_vid); | |
284 | } | |
285 | } | |
286 | } | |
287 | ||
1da177e4 LT |
288 | int |
289 | e1000_up(struct e1000_adapter *adapter) | |
290 | { | |
291 | struct net_device *netdev = adapter->netdev; | |
292 | int err; | |
293 | ||
294 | /* hardware has been reset, we need to reload some things */ | |
295 | ||
296 | /* Reset the PHY if it was previously powered down */ | |
297 | if(adapter->hw.media_type == e1000_media_type_copper) { | |
298 | uint16_t mii_reg; | |
299 | e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); | |
300 | if(mii_reg & MII_CR_POWER_DOWN) | |
301 | e1000_phy_reset(&adapter->hw); | |
302 | } | |
303 | ||
304 | e1000_set_multi(netdev); | |
305 | ||
306 | e1000_restore_vlan(adapter); | |
307 | ||
308 | e1000_configure_tx(adapter); | |
309 | e1000_setup_rctl(adapter); | |
310 | e1000_configure_rx(adapter); | |
2d7edb92 | 311 | adapter->alloc_rx_buf(adapter); |
1da177e4 | 312 | |
fa4f7ef3 MC |
313 | #ifdef CONFIG_PCI_MSI |
314 | if(adapter->hw.mac_type > e1000_82547_rev_2) { | |
315 | adapter->have_msi = TRUE; | |
316 | if((err = pci_enable_msi(adapter->pdev))) { | |
317 | DPRINTK(PROBE, ERR, | |
318 | "Unable to allocate MSI interrupt Error: %d\n", err); | |
319 | adapter->have_msi = FALSE; | |
320 | } | |
321 | } | |
322 | #endif | |
1da177e4 LT |
323 | if((err = request_irq(adapter->pdev->irq, &e1000_intr, |
324 | SA_SHIRQ | SA_SAMPLE_RANDOM, | |
2648345f MC |
325 | netdev->name, netdev))) { |
326 | DPRINTK(PROBE, ERR, | |
327 | "Unable to allocate interrupt Error: %d\n", err); | |
1da177e4 | 328 | return err; |
2648345f | 329 | } |
1da177e4 LT |
330 | |
331 | mod_timer(&adapter->watchdog_timer, jiffies); | |
1da177e4 LT |
332 | |
333 | #ifdef CONFIG_E1000_NAPI | |
334 | netif_poll_enable(netdev); | |
335 | #endif | |
5de55624 MC |
336 | e1000_irq_enable(adapter); |
337 | ||
1da177e4 LT |
338 | return 0; |
339 | } | |
340 | ||
341 | void | |
342 | e1000_down(struct e1000_adapter *adapter) | |
343 | { | |
344 | struct net_device *netdev = adapter->netdev; | |
345 | ||
346 | e1000_irq_disable(adapter); | |
347 | free_irq(adapter->pdev->irq, netdev); | |
fa4f7ef3 MC |
348 | #ifdef CONFIG_PCI_MSI |
349 | if(adapter->hw.mac_type > e1000_82547_rev_2 && | |
350 | adapter->have_msi == TRUE) | |
351 | pci_disable_msi(adapter->pdev); | |
352 | #endif | |
1da177e4 LT |
353 | del_timer_sync(&adapter->tx_fifo_stall_timer); |
354 | del_timer_sync(&adapter->watchdog_timer); | |
355 | del_timer_sync(&adapter->phy_info_timer); | |
356 | ||
357 | #ifdef CONFIG_E1000_NAPI | |
358 | netif_poll_disable(netdev); | |
359 | #endif | |
360 | adapter->link_speed = 0; | |
361 | adapter->link_duplex = 0; | |
362 | netif_carrier_off(netdev); | |
363 | netif_stop_queue(netdev); | |
364 | ||
365 | e1000_reset(adapter); | |
366 | e1000_clean_tx_ring(adapter); | |
367 | e1000_clean_rx_ring(adapter); | |
368 | ||
369 | /* If WoL is not enabled | |
2d7edb92 | 370 | * and management mode is not IAMT |
1da177e4 | 371 | * Power down the PHY so no link is implied when interface is down */ |
2d7edb92 MC |
372 | if(!adapter->wol && adapter->hw.mac_type >= e1000_82540 && |
373 | adapter->hw.media_type == e1000_media_type_copper && | |
374 | !e1000_check_mng_mode(&adapter->hw) && | |
375 | !(E1000_READ_REG(&adapter->hw, MANC) & E1000_MANC_SMBUS_EN)) { | |
1da177e4 LT |
376 | uint16_t mii_reg; |
377 | e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); | |
378 | mii_reg |= MII_CR_POWER_DOWN; | |
379 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg); | |
4e48a2b9 | 380 | mdelay(1); |
1da177e4 LT |
381 | } |
382 | } | |
383 | ||
384 | void | |
385 | e1000_reset(struct e1000_adapter *adapter) | |
386 | { | |
1125ecbc | 387 | struct net_device *netdev = adapter->netdev; |
2d7edb92 | 388 | uint32_t pba, manc; |
1125ecbc MC |
389 | uint16_t fc_high_water_mark = E1000_FC_HIGH_DIFF; |
390 | uint16_t fc_low_water_mark = E1000_FC_LOW_DIFF; | |
1da177e4 LT |
391 | |
392 | /* Repartition Pba for greater than 9k mtu | |
393 | * To take effect CTRL.RST is required. | |
394 | */ | |
395 | ||
2d7edb92 MC |
396 | switch (adapter->hw.mac_type) { |
397 | case e1000_82547: | |
0e6ef3e0 | 398 | case e1000_82547_rev_2: |
2d7edb92 MC |
399 | pba = E1000_PBA_30K; |
400 | break; | |
401 | case e1000_82573: | |
402 | pba = E1000_PBA_12K; | |
403 | break; | |
404 | default: | |
405 | pba = E1000_PBA_48K; | |
406 | break; | |
407 | } | |
408 | ||
1125ecbc MC |
409 | if((adapter->hw.mac_type != e1000_82573) && |
410 | (adapter->rx_buffer_len > E1000_RXBUFFER_8192)) { | |
411 | pba -= 8; /* allocate more FIFO for Tx */ | |
412 | /* send an XOFF when there is enough space in the | |
413 | * Rx FIFO to hold one extra full size Rx packet | |
414 | */ | |
415 | fc_high_water_mark = netdev->mtu + ENET_HEADER_SIZE + | |
416 | ETHERNET_FCS_SIZE + 1; | |
417 | fc_low_water_mark = fc_high_water_mark + 8; | |
418 | } | |
2d7edb92 MC |
419 | |
420 | ||
421 | if(adapter->hw.mac_type == e1000_82547) { | |
1da177e4 LT |
422 | adapter->tx_fifo_head = 0; |
423 | adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; | |
424 | adapter->tx_fifo_size = | |
425 | (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; | |
426 | atomic_set(&adapter->tx_fifo_stall, 0); | |
427 | } | |
2d7edb92 | 428 | |
1da177e4 LT |
429 | E1000_WRITE_REG(&adapter->hw, PBA, pba); |
430 | ||
431 | /* flow control settings */ | |
432 | adapter->hw.fc_high_water = (pba << E1000_PBA_BYTES_SHIFT) - | |
1125ecbc | 433 | fc_high_water_mark; |
1da177e4 | 434 | adapter->hw.fc_low_water = (pba << E1000_PBA_BYTES_SHIFT) - |
1125ecbc | 435 | fc_low_water_mark; |
1da177e4 LT |
436 | adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME; |
437 | adapter->hw.fc_send_xon = 1; | |
438 | adapter->hw.fc = adapter->hw.original_fc; | |
439 | ||
2d7edb92 | 440 | /* Allow time for pending master requests to run */ |
1da177e4 LT |
441 | e1000_reset_hw(&adapter->hw); |
442 | if(adapter->hw.mac_type >= e1000_82544) | |
443 | E1000_WRITE_REG(&adapter->hw, WUC, 0); | |
444 | if(e1000_init_hw(&adapter->hw)) | |
445 | DPRINTK(PROBE, ERR, "Hardware Error\n"); | |
2d7edb92 | 446 | e1000_update_mng_vlan(adapter); |
1da177e4 LT |
447 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
448 | E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE); | |
449 | ||
450 | e1000_reset_adaptive(&adapter->hw); | |
451 | e1000_phy_get_info(&adapter->hw, &adapter->phy_info); | |
2d7edb92 MC |
452 | if (adapter->en_mng_pt) { |
453 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
454 | manc |= (E1000_MANC_ARP_EN | E1000_MANC_EN_MNG2HOST); | |
455 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
456 | } | |
1da177e4 LT |
457 | } |
458 | ||
459 | /** | |
460 | * e1000_probe - Device Initialization Routine | |
461 | * @pdev: PCI device information struct | |
462 | * @ent: entry in e1000_pci_tbl | |
463 | * | |
464 | * Returns 0 on success, negative on failure | |
465 | * | |
466 | * e1000_probe initializes an adapter identified by a pci_dev structure. | |
467 | * The OS initialization, configuring of the adapter private structure, | |
468 | * and a hardware reset occur. | |
469 | **/ | |
470 | ||
471 | static int __devinit | |
472 | e1000_probe(struct pci_dev *pdev, | |
473 | const struct pci_device_id *ent) | |
474 | { | |
475 | struct net_device *netdev; | |
476 | struct e1000_adapter *adapter; | |
2d7edb92 MC |
477 | unsigned long mmio_start, mmio_len; |
478 | uint32_t swsm; | |
479 | ||
1da177e4 | 480 | static int cards_found = 0; |
2d7edb92 | 481 | int i, err, pci_using_dac; |
1da177e4 LT |
482 | uint16_t eeprom_data; |
483 | uint16_t eeprom_apme_mask = E1000_EEPROM_APME; | |
1da177e4 LT |
484 | if((err = pci_enable_device(pdev))) |
485 | return err; | |
486 | ||
487 | if(!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) { | |
488 | pci_using_dac = 1; | |
489 | } else { | |
490 | if((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK))) { | |
491 | E1000_ERR("No usable DMA configuration, aborting\n"); | |
492 | return err; | |
493 | } | |
494 | pci_using_dac = 0; | |
495 | } | |
496 | ||
497 | if((err = pci_request_regions(pdev, e1000_driver_name))) | |
498 | return err; | |
499 | ||
500 | pci_set_master(pdev); | |
501 | ||
502 | netdev = alloc_etherdev(sizeof(struct e1000_adapter)); | |
503 | if(!netdev) { | |
504 | err = -ENOMEM; | |
505 | goto err_alloc_etherdev; | |
506 | } | |
507 | ||
508 | SET_MODULE_OWNER(netdev); | |
509 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
510 | ||
511 | pci_set_drvdata(pdev, netdev); | |
60490fe0 | 512 | adapter = netdev_priv(netdev); |
1da177e4 LT |
513 | adapter->netdev = netdev; |
514 | adapter->pdev = pdev; | |
515 | adapter->hw.back = adapter; | |
516 | adapter->msg_enable = (1 << debug) - 1; | |
517 | ||
518 | mmio_start = pci_resource_start(pdev, BAR_0); | |
519 | mmio_len = pci_resource_len(pdev, BAR_0); | |
520 | ||
521 | adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); | |
522 | if(!adapter->hw.hw_addr) { | |
523 | err = -EIO; | |
524 | goto err_ioremap; | |
525 | } | |
526 | ||
527 | for(i = BAR_1; i <= BAR_5; i++) { | |
528 | if(pci_resource_len(pdev, i) == 0) | |
529 | continue; | |
530 | if(pci_resource_flags(pdev, i) & IORESOURCE_IO) { | |
531 | adapter->hw.io_base = pci_resource_start(pdev, i); | |
532 | break; | |
533 | } | |
534 | } | |
535 | ||
536 | netdev->open = &e1000_open; | |
537 | netdev->stop = &e1000_close; | |
538 | netdev->hard_start_xmit = &e1000_xmit_frame; | |
539 | netdev->get_stats = &e1000_get_stats; | |
540 | netdev->set_multicast_list = &e1000_set_multi; | |
541 | netdev->set_mac_address = &e1000_set_mac; | |
542 | netdev->change_mtu = &e1000_change_mtu; | |
543 | netdev->do_ioctl = &e1000_ioctl; | |
544 | e1000_set_ethtool_ops(netdev); | |
545 | netdev->tx_timeout = &e1000_tx_timeout; | |
546 | netdev->watchdog_timeo = 5 * HZ; | |
547 | #ifdef CONFIG_E1000_NAPI | |
548 | netdev->poll = &e1000_clean; | |
549 | netdev->weight = 64; | |
550 | #endif | |
551 | netdev->vlan_rx_register = e1000_vlan_rx_register; | |
552 | netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid; | |
553 | netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid; | |
554 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
555 | netdev->poll_controller = e1000_netpoll; | |
556 | #endif | |
557 | strcpy(netdev->name, pci_name(pdev)); | |
558 | ||
559 | netdev->mem_start = mmio_start; | |
560 | netdev->mem_end = mmio_start + mmio_len; | |
561 | netdev->base_addr = adapter->hw.io_base; | |
562 | ||
563 | adapter->bd_number = cards_found; | |
564 | ||
565 | /* setup the private structure */ | |
566 | ||
567 | if((err = e1000_sw_init(adapter))) | |
568 | goto err_sw_init; | |
569 | ||
2d7edb92 MC |
570 | if((err = e1000_check_phy_reset_block(&adapter->hw))) |
571 | DPRINTK(PROBE, INFO, "PHY reset is blocked due to SOL/IDER session.\n"); | |
572 | ||
1da177e4 LT |
573 | if(adapter->hw.mac_type >= e1000_82543) { |
574 | netdev->features = NETIF_F_SG | | |
575 | NETIF_F_HW_CSUM | | |
576 | NETIF_F_HW_VLAN_TX | | |
577 | NETIF_F_HW_VLAN_RX | | |
578 | NETIF_F_HW_VLAN_FILTER; | |
579 | } | |
580 | ||
581 | #ifdef NETIF_F_TSO | |
582 | if((adapter->hw.mac_type >= e1000_82544) && | |
583 | (adapter->hw.mac_type != e1000_82547)) | |
584 | netdev->features |= NETIF_F_TSO; | |
2d7edb92 MC |
585 | |
586 | #ifdef NETIF_F_TSO_IPV6 | |
587 | if(adapter->hw.mac_type > e1000_82547_rev_2) | |
588 | netdev->features |= NETIF_F_TSO_IPV6; | |
589 | #endif | |
1da177e4 LT |
590 | #endif |
591 | if(pci_using_dac) | |
592 | netdev->features |= NETIF_F_HIGHDMA; | |
593 | ||
594 | /* hard_start_xmit is safe against parallel locking */ | |
595 | netdev->features |= NETIF_F_LLTX; | |
596 | ||
2d7edb92 MC |
597 | adapter->en_mng_pt = e1000_enable_mng_pass_thru(&adapter->hw); |
598 | ||
1da177e4 LT |
599 | /* before reading the EEPROM, reset the controller to |
600 | * put the device in a known good starting state */ | |
601 | ||
602 | e1000_reset_hw(&adapter->hw); | |
603 | ||
604 | /* make sure the EEPROM is good */ | |
605 | ||
606 | if(e1000_validate_eeprom_checksum(&adapter->hw) < 0) { | |
607 | DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n"); | |
608 | err = -EIO; | |
609 | goto err_eeprom; | |
610 | } | |
611 | ||
612 | /* copy the MAC address out of the EEPROM */ | |
613 | ||
2648345f | 614 | if(e1000_read_mac_addr(&adapter->hw)) |
1da177e4 LT |
615 | DPRINTK(PROBE, ERR, "EEPROM Read Error\n"); |
616 | memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); | |
617 | ||
618 | if(!is_valid_ether_addr(netdev->dev_addr)) { | |
619 | DPRINTK(PROBE, ERR, "Invalid MAC Address\n"); | |
620 | err = -EIO; | |
621 | goto err_eeprom; | |
622 | } | |
623 | ||
624 | e1000_read_part_num(&adapter->hw, &(adapter->part_num)); | |
625 | ||
626 | e1000_get_bus_info(&adapter->hw); | |
627 | ||
628 | init_timer(&adapter->tx_fifo_stall_timer); | |
629 | adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall; | |
630 | adapter->tx_fifo_stall_timer.data = (unsigned long) adapter; | |
631 | ||
632 | init_timer(&adapter->watchdog_timer); | |
633 | adapter->watchdog_timer.function = &e1000_watchdog; | |
634 | adapter->watchdog_timer.data = (unsigned long) adapter; | |
635 | ||
636 | INIT_WORK(&adapter->watchdog_task, | |
637 | (void (*)(void *))e1000_watchdog_task, adapter); | |
638 | ||
639 | init_timer(&adapter->phy_info_timer); | |
640 | adapter->phy_info_timer.function = &e1000_update_phy_info; | |
641 | adapter->phy_info_timer.data = (unsigned long) adapter; | |
642 | ||
643 | INIT_WORK(&adapter->tx_timeout_task, | |
644 | (void (*)(void *))e1000_tx_timeout_task, netdev); | |
645 | ||
646 | /* we're going to reset, so assume we have no link for now */ | |
647 | ||
648 | netif_carrier_off(netdev); | |
649 | netif_stop_queue(netdev); | |
650 | ||
651 | e1000_check_options(adapter); | |
652 | ||
653 | /* Initial Wake on LAN setting | |
654 | * If APM wake is enabled in the EEPROM, | |
655 | * enable the ACPI Magic Packet filter | |
656 | */ | |
657 | ||
658 | switch(adapter->hw.mac_type) { | |
659 | case e1000_82542_rev2_0: | |
660 | case e1000_82542_rev2_1: | |
661 | case e1000_82543: | |
662 | break; | |
663 | case e1000_82544: | |
664 | e1000_read_eeprom(&adapter->hw, | |
665 | EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); | |
666 | eeprom_apme_mask = E1000_EEPROM_82544_APM; | |
667 | break; | |
668 | case e1000_82546: | |
669 | case e1000_82546_rev_3: | |
670 | if((E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1) | |
671 | && (adapter->hw.media_type == e1000_media_type_copper)) { | |
672 | e1000_read_eeprom(&adapter->hw, | |
673 | EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); | |
674 | break; | |
675 | } | |
676 | /* Fall Through */ | |
677 | default: | |
678 | e1000_read_eeprom(&adapter->hw, | |
679 | EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); | |
680 | break; | |
681 | } | |
682 | if(eeprom_data & eeprom_apme_mask) | |
683 | adapter->wol |= E1000_WUFC_MAG; | |
684 | ||
685 | /* reset the hardware with the new settings */ | |
686 | e1000_reset(adapter); | |
687 | ||
2d7edb92 MC |
688 | /* Let firmware know the driver has taken over */ |
689 | switch(adapter->hw.mac_type) { | |
690 | case e1000_82573: | |
691 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
692 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
693 | swsm | E1000_SWSM_DRV_LOAD); | |
694 | break; | |
695 | default: | |
696 | break; | |
697 | } | |
698 | ||
1da177e4 LT |
699 | strcpy(netdev->name, "eth%d"); |
700 | if((err = register_netdev(netdev))) | |
701 | goto err_register; | |
702 | ||
703 | DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n"); | |
704 | ||
705 | cards_found++; | |
706 | return 0; | |
707 | ||
708 | err_register: | |
709 | err_sw_init: | |
710 | err_eeprom: | |
711 | iounmap(adapter->hw.hw_addr); | |
712 | err_ioremap: | |
713 | free_netdev(netdev); | |
714 | err_alloc_etherdev: | |
715 | pci_release_regions(pdev); | |
716 | return err; | |
717 | } | |
718 | ||
719 | /** | |
720 | * e1000_remove - Device Removal Routine | |
721 | * @pdev: PCI device information struct | |
722 | * | |
723 | * e1000_remove is called by the PCI subsystem to alert the driver | |
724 | * that it should release a PCI device. The could be caused by a | |
725 | * Hot-Plug event, or because the driver is going to be removed from | |
726 | * memory. | |
727 | **/ | |
728 | ||
729 | static void __devexit | |
730 | e1000_remove(struct pci_dev *pdev) | |
731 | { | |
732 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 733 | struct e1000_adapter *adapter = netdev_priv(netdev); |
2d7edb92 | 734 | uint32_t manc, swsm; |
1da177e4 LT |
735 | |
736 | flush_scheduled_work(); | |
737 | ||
738 | if(adapter->hw.mac_type >= e1000_82540 && | |
739 | adapter->hw.media_type == e1000_media_type_copper) { | |
740 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
741 | if(manc & E1000_MANC_SMBUS_EN) { | |
742 | manc |= E1000_MANC_ARP_EN; | |
743 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
744 | } | |
745 | } | |
746 | ||
2d7edb92 MC |
747 | switch(adapter->hw.mac_type) { |
748 | case e1000_82573: | |
749 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
750 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
751 | swsm & ~E1000_SWSM_DRV_LOAD); | |
752 | break; | |
753 | ||
754 | default: | |
755 | break; | |
756 | } | |
757 | ||
1da177e4 LT |
758 | unregister_netdev(netdev); |
759 | ||
2d7edb92 MC |
760 | if(!e1000_check_phy_reset_block(&adapter->hw)) |
761 | e1000_phy_hw_reset(&adapter->hw); | |
1da177e4 LT |
762 | |
763 | iounmap(adapter->hw.hw_addr); | |
764 | pci_release_regions(pdev); | |
765 | ||
766 | free_netdev(netdev); | |
767 | ||
768 | pci_disable_device(pdev); | |
769 | } | |
770 | ||
771 | /** | |
772 | * e1000_sw_init - Initialize general software structures (struct e1000_adapter) | |
773 | * @adapter: board private structure to initialize | |
774 | * | |
775 | * e1000_sw_init initializes the Adapter private data structure. | |
776 | * Fields are initialized based on PCI device information and | |
777 | * OS network device settings (MTU size). | |
778 | **/ | |
779 | ||
780 | static int __devinit | |
781 | e1000_sw_init(struct e1000_adapter *adapter) | |
782 | { | |
783 | struct e1000_hw *hw = &adapter->hw; | |
784 | struct net_device *netdev = adapter->netdev; | |
785 | struct pci_dev *pdev = adapter->pdev; | |
786 | ||
787 | /* PCI config space info */ | |
788 | ||
789 | hw->vendor_id = pdev->vendor; | |
790 | hw->device_id = pdev->device; | |
791 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
792 | hw->subsystem_id = pdev->subsystem_device; | |
793 | ||
794 | pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); | |
795 | ||
796 | pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); | |
797 | ||
798 | adapter->rx_buffer_len = E1000_RXBUFFER_2048; | |
2d7edb92 | 799 | adapter->rx_ps_bsize0 = E1000_RXBUFFER_256; |
1da177e4 LT |
800 | hw->max_frame_size = netdev->mtu + |
801 | ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; | |
802 | hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; | |
803 | ||
804 | /* identify the MAC */ | |
805 | ||
806 | if(e1000_set_mac_type(hw)) { | |
807 | DPRINTK(PROBE, ERR, "Unknown MAC Type\n"); | |
808 | return -EIO; | |
809 | } | |
810 | ||
811 | /* initialize eeprom parameters */ | |
812 | ||
2d7edb92 MC |
813 | if(e1000_init_eeprom_params(hw)) { |
814 | E1000_ERR("EEPROM initialization failed\n"); | |
815 | return -EIO; | |
816 | } | |
1da177e4 LT |
817 | |
818 | switch(hw->mac_type) { | |
819 | default: | |
820 | break; | |
821 | case e1000_82541: | |
822 | case e1000_82547: | |
823 | case e1000_82541_rev_2: | |
824 | case e1000_82547_rev_2: | |
825 | hw->phy_init_script = 1; | |
826 | break; | |
827 | } | |
828 | ||
829 | e1000_set_media_type(hw); | |
830 | ||
831 | hw->wait_autoneg_complete = FALSE; | |
832 | hw->tbi_compatibility_en = TRUE; | |
833 | hw->adaptive_ifs = TRUE; | |
834 | ||
835 | /* Copper options */ | |
836 | ||
837 | if(hw->media_type == e1000_media_type_copper) { | |
838 | hw->mdix = AUTO_ALL_MODES; | |
839 | hw->disable_polarity_correction = FALSE; | |
840 | hw->master_slave = E1000_MASTER_SLAVE; | |
841 | } | |
842 | ||
843 | atomic_set(&adapter->irq_sem, 1); | |
844 | spin_lock_init(&adapter->stats_lock); | |
845 | spin_lock_init(&adapter->tx_lock); | |
846 | ||
847 | return 0; | |
848 | } | |
849 | ||
850 | /** | |
851 | * e1000_open - Called when a network interface is made active | |
852 | * @netdev: network interface device structure | |
853 | * | |
854 | * Returns 0 on success, negative value on failure | |
855 | * | |
856 | * The open entry point is called when a network interface is made | |
857 | * active by the system (IFF_UP). At this point all resources needed | |
858 | * for transmit and receive operations are allocated, the interrupt | |
859 | * handler is registered with the OS, the watchdog timer is started, | |
860 | * and the stack is notified that the interface is ready. | |
861 | **/ | |
862 | ||
863 | static int | |
864 | e1000_open(struct net_device *netdev) | |
865 | { | |
60490fe0 | 866 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
867 | int err; |
868 | ||
869 | /* allocate transmit descriptors */ | |
870 | ||
871 | if((err = e1000_setup_tx_resources(adapter))) | |
872 | goto err_setup_tx; | |
873 | ||
874 | /* allocate receive descriptors */ | |
875 | ||
876 | if((err = e1000_setup_rx_resources(adapter))) | |
877 | goto err_setup_rx; | |
878 | ||
879 | if((err = e1000_up(adapter))) | |
880 | goto err_up; | |
2d7edb92 MC |
881 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
882 | if((adapter->hw.mng_cookie.status & | |
883 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { | |
884 | e1000_update_mng_vlan(adapter); | |
885 | } | |
1da177e4 LT |
886 | |
887 | return E1000_SUCCESS; | |
888 | ||
889 | err_up: | |
890 | e1000_free_rx_resources(adapter); | |
891 | err_setup_rx: | |
892 | e1000_free_tx_resources(adapter); | |
893 | err_setup_tx: | |
894 | e1000_reset(adapter); | |
895 | ||
896 | return err; | |
897 | } | |
898 | ||
899 | /** | |
900 | * e1000_close - Disables a network interface | |
901 | * @netdev: network interface device structure | |
902 | * | |
903 | * Returns 0, this is not allowed to fail | |
904 | * | |
905 | * The close entry point is called when an interface is de-activated | |
906 | * by the OS. The hardware is still under the drivers control, but | |
907 | * needs to be disabled. A global MAC reset is issued to stop the | |
908 | * hardware, and all transmit and receive resources are freed. | |
909 | **/ | |
910 | ||
911 | static int | |
912 | e1000_close(struct net_device *netdev) | |
913 | { | |
60490fe0 | 914 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
915 | |
916 | e1000_down(adapter); | |
917 | ||
918 | e1000_free_tx_resources(adapter); | |
919 | e1000_free_rx_resources(adapter); | |
920 | ||
2d7edb92 MC |
921 | if((adapter->hw.mng_cookie.status & |
922 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { | |
923 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); | |
924 | } | |
1da177e4 LT |
925 | return 0; |
926 | } | |
927 | ||
928 | /** | |
929 | * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary | |
930 | * @adapter: address of board private structure | |
2d7edb92 MC |
931 | * @start: address of beginning of memory |
932 | * @len: length of memory | |
1da177e4 LT |
933 | **/ |
934 | static inline boolean_t | |
935 | e1000_check_64k_bound(struct e1000_adapter *adapter, | |
936 | void *start, unsigned long len) | |
937 | { | |
938 | unsigned long begin = (unsigned long) start; | |
939 | unsigned long end = begin + len; | |
940 | ||
2648345f MC |
941 | /* First rev 82545 and 82546 need to not allow any memory |
942 | * write location to cross 64k boundary due to errata 23 */ | |
1da177e4 | 943 | if (adapter->hw.mac_type == e1000_82545 || |
2648345f | 944 | adapter->hw.mac_type == e1000_82546) { |
1da177e4 LT |
945 | return ((begin ^ (end - 1)) >> 16) != 0 ? FALSE : TRUE; |
946 | } | |
947 | ||
948 | return TRUE; | |
949 | } | |
950 | ||
951 | /** | |
952 | * e1000_setup_tx_resources - allocate Tx resources (Descriptors) | |
953 | * @adapter: board private structure | |
954 | * | |
955 | * Return 0 on success, negative on failure | |
956 | **/ | |
957 | ||
958 | int | |
959 | e1000_setup_tx_resources(struct e1000_adapter *adapter) | |
960 | { | |
961 | struct e1000_desc_ring *txdr = &adapter->tx_ring; | |
962 | struct pci_dev *pdev = adapter->pdev; | |
963 | int size; | |
964 | ||
965 | size = sizeof(struct e1000_buffer) * txdr->count; | |
966 | txdr->buffer_info = vmalloc(size); | |
967 | if(!txdr->buffer_info) { | |
2648345f MC |
968 | DPRINTK(PROBE, ERR, |
969 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1da177e4 LT |
970 | return -ENOMEM; |
971 | } | |
972 | memset(txdr->buffer_info, 0, size); | |
973 | ||
974 | /* round up to nearest 4K */ | |
975 | ||
976 | txdr->size = txdr->count * sizeof(struct e1000_tx_desc); | |
977 | E1000_ROUNDUP(txdr->size, 4096); | |
978 | ||
979 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); | |
980 | if(!txdr->desc) { | |
981 | setup_tx_desc_die: | |
1da177e4 | 982 | vfree(txdr->buffer_info); |
2648345f MC |
983 | DPRINTK(PROBE, ERR, |
984 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1da177e4 LT |
985 | return -ENOMEM; |
986 | } | |
987 | ||
2648345f | 988 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
989 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
990 | void *olddesc = txdr->desc; | |
991 | dma_addr_t olddma = txdr->dma; | |
2648345f MC |
992 | DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes " |
993 | "at %p\n", txdr->size, txdr->desc); | |
994 | /* Try again, without freeing the previous */ | |
1da177e4 | 995 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); |
1da177e4 | 996 | if(!txdr->desc) { |
2648345f | 997 | /* Failed allocation, critical failure */ |
1da177e4 LT |
998 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
999 | goto setup_tx_desc_die; | |
1000 | } | |
1001 | ||
1002 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { | |
1003 | /* give up */ | |
2648345f MC |
1004 | pci_free_consistent(pdev, txdr->size, txdr->desc, |
1005 | txdr->dma); | |
1da177e4 LT |
1006 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1007 | DPRINTK(PROBE, ERR, | |
2648345f MC |
1008 | "Unable to allocate aligned memory " |
1009 | "for the transmit descriptor ring\n"); | |
1da177e4 LT |
1010 | vfree(txdr->buffer_info); |
1011 | return -ENOMEM; | |
1012 | } else { | |
2648345f | 1013 | /* Free old allocation, new allocation was successful */ |
1da177e4 LT |
1014 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1015 | } | |
1016 | } | |
1017 | memset(txdr->desc, 0, txdr->size); | |
1018 | ||
1019 | txdr->next_to_use = 0; | |
1020 | txdr->next_to_clean = 0; | |
1021 | ||
1022 | return 0; | |
1023 | } | |
1024 | ||
1025 | /** | |
1026 | * e1000_configure_tx - Configure 8254x Transmit Unit after Reset | |
1027 | * @adapter: board private structure | |
1028 | * | |
1029 | * Configure the Tx unit of the MAC after a reset. | |
1030 | **/ | |
1031 | ||
1032 | static void | |
1033 | e1000_configure_tx(struct e1000_adapter *adapter) | |
1034 | { | |
1035 | uint64_t tdba = adapter->tx_ring.dma; | |
1036 | uint32_t tdlen = adapter->tx_ring.count * sizeof(struct e1000_tx_desc); | |
1037 | uint32_t tctl, tipg; | |
1038 | ||
1039 | E1000_WRITE_REG(&adapter->hw, TDBAL, (tdba & 0x00000000ffffffffULL)); | |
1040 | E1000_WRITE_REG(&adapter->hw, TDBAH, (tdba >> 32)); | |
1041 | ||
1042 | E1000_WRITE_REG(&adapter->hw, TDLEN, tdlen); | |
1043 | ||
1044 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1045 | ||
1046 | E1000_WRITE_REG(&adapter->hw, TDH, 0); | |
1047 | E1000_WRITE_REG(&adapter->hw, TDT, 0); | |
1048 | ||
1049 | /* Set the default values for the Tx Inter Packet Gap timer */ | |
1050 | ||
1051 | switch (adapter->hw.mac_type) { | |
1052 | case e1000_82542_rev2_0: | |
1053 | case e1000_82542_rev2_1: | |
1054 | tipg = DEFAULT_82542_TIPG_IPGT; | |
1055 | tipg |= DEFAULT_82542_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT; | |
1056 | tipg |= DEFAULT_82542_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT; | |
1057 | break; | |
1058 | default: | |
1059 | if(adapter->hw.media_type == e1000_media_type_fiber || | |
1060 | adapter->hw.media_type == e1000_media_type_internal_serdes) | |
1061 | tipg = DEFAULT_82543_TIPG_IPGT_FIBER; | |
1062 | else | |
1063 | tipg = DEFAULT_82543_TIPG_IPGT_COPPER; | |
1064 | tipg |= DEFAULT_82543_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT; | |
1065 | tipg |= DEFAULT_82543_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT; | |
1066 | } | |
1067 | E1000_WRITE_REG(&adapter->hw, TIPG, tipg); | |
1068 | ||
1069 | /* Set the Tx Interrupt Delay register */ | |
1070 | ||
1071 | E1000_WRITE_REG(&adapter->hw, TIDV, adapter->tx_int_delay); | |
1072 | if(adapter->hw.mac_type >= e1000_82540) | |
1073 | E1000_WRITE_REG(&adapter->hw, TADV, adapter->tx_abs_int_delay); | |
1074 | ||
1075 | /* Program the Transmit Control Register */ | |
1076 | ||
1077 | tctl = E1000_READ_REG(&adapter->hw, TCTL); | |
1078 | ||
1079 | tctl &= ~E1000_TCTL_CT; | |
1080 | tctl |= E1000_TCTL_EN | E1000_TCTL_PSP | | |
1081 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); | |
1082 | ||
1083 | E1000_WRITE_REG(&adapter->hw, TCTL, tctl); | |
1084 | ||
1085 | e1000_config_collision_dist(&adapter->hw); | |
1086 | ||
1087 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
1088 | adapter->txd_cmd = E1000_TXD_CMD_IDE | E1000_TXD_CMD_EOP | | |
1089 | E1000_TXD_CMD_IFCS; | |
1090 | ||
1091 | if(adapter->hw.mac_type < e1000_82543) | |
1092 | adapter->txd_cmd |= E1000_TXD_CMD_RPS; | |
1093 | else | |
1094 | adapter->txd_cmd |= E1000_TXD_CMD_RS; | |
1095 | ||
1096 | /* Cache if we're 82544 running in PCI-X because we'll | |
1097 | * need this to apply a workaround later in the send path. */ | |
1098 | if(adapter->hw.mac_type == e1000_82544 && | |
1099 | adapter->hw.bus_type == e1000_bus_type_pcix) | |
1100 | adapter->pcix_82544 = 1; | |
1101 | } | |
1102 | ||
1103 | /** | |
1104 | * e1000_setup_rx_resources - allocate Rx resources (Descriptors) | |
1105 | * @adapter: board private structure | |
1106 | * | |
1107 | * Returns 0 on success, negative on failure | |
1108 | **/ | |
1109 | ||
1110 | int | |
1111 | e1000_setup_rx_resources(struct e1000_adapter *adapter) | |
1112 | { | |
1113 | struct e1000_desc_ring *rxdr = &adapter->rx_ring; | |
1114 | struct pci_dev *pdev = adapter->pdev; | |
2d7edb92 | 1115 | int size, desc_len; |
1da177e4 LT |
1116 | |
1117 | size = sizeof(struct e1000_buffer) * rxdr->count; | |
1118 | rxdr->buffer_info = vmalloc(size); | |
1119 | if(!rxdr->buffer_info) { | |
2648345f MC |
1120 | DPRINTK(PROBE, ERR, |
1121 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1da177e4 LT |
1122 | return -ENOMEM; |
1123 | } | |
1124 | memset(rxdr->buffer_info, 0, size); | |
1125 | ||
2d7edb92 MC |
1126 | size = sizeof(struct e1000_ps_page) * rxdr->count; |
1127 | rxdr->ps_page = kmalloc(size, GFP_KERNEL); | |
1128 | if(!rxdr->ps_page) { | |
1129 | vfree(rxdr->buffer_info); | |
1130 | DPRINTK(PROBE, ERR, | |
1131 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1132 | return -ENOMEM; | |
1133 | } | |
1134 | memset(rxdr->ps_page, 0, size); | |
1135 | ||
1136 | size = sizeof(struct e1000_ps_page_dma) * rxdr->count; | |
1137 | rxdr->ps_page_dma = kmalloc(size, GFP_KERNEL); | |
1138 | if(!rxdr->ps_page_dma) { | |
1139 | vfree(rxdr->buffer_info); | |
1140 | kfree(rxdr->ps_page); | |
1141 | DPRINTK(PROBE, ERR, | |
1142 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1143 | return -ENOMEM; | |
1144 | } | |
1145 | memset(rxdr->ps_page_dma, 0, size); | |
1146 | ||
1147 | if(adapter->hw.mac_type <= e1000_82547_rev_2) | |
1148 | desc_len = sizeof(struct e1000_rx_desc); | |
1149 | else | |
1150 | desc_len = sizeof(union e1000_rx_desc_packet_split); | |
1151 | ||
1da177e4 LT |
1152 | /* Round up to nearest 4K */ |
1153 | ||
2d7edb92 | 1154 | rxdr->size = rxdr->count * desc_len; |
1da177e4 LT |
1155 | E1000_ROUNDUP(rxdr->size, 4096); |
1156 | ||
1157 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); | |
1158 | ||
1159 | if(!rxdr->desc) { | |
1160 | setup_rx_desc_die: | |
1da177e4 | 1161 | vfree(rxdr->buffer_info); |
2d7edb92 MC |
1162 | kfree(rxdr->ps_page); |
1163 | kfree(rxdr->ps_page_dma); | |
2648345f MC |
1164 | DPRINTK(PROBE, ERR, |
1165 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1da177e4 LT |
1166 | return -ENOMEM; |
1167 | } | |
1168 | ||
2648345f | 1169 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1170 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
1171 | void *olddesc = rxdr->desc; | |
1172 | dma_addr_t olddma = rxdr->dma; | |
2648345f MC |
1173 | DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes " |
1174 | "at %p\n", rxdr->size, rxdr->desc); | |
1175 | /* Try again, without freeing the previous */ | |
1da177e4 | 1176 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); |
1da177e4 | 1177 | if(!rxdr->desc) { |
2648345f | 1178 | /* Failed allocation, critical failure */ |
1da177e4 LT |
1179 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
1180 | goto setup_rx_desc_die; | |
1181 | } | |
1182 | ||
1183 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { | |
1184 | /* give up */ | |
2648345f MC |
1185 | pci_free_consistent(pdev, rxdr->size, rxdr->desc, |
1186 | rxdr->dma); | |
1da177e4 | 1187 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
2648345f MC |
1188 | DPRINTK(PROBE, ERR, |
1189 | "Unable to allocate aligned memory " | |
1190 | "for the receive descriptor ring\n"); | |
1da177e4 | 1191 | vfree(rxdr->buffer_info); |
2d7edb92 MC |
1192 | kfree(rxdr->ps_page); |
1193 | kfree(rxdr->ps_page_dma); | |
1da177e4 LT |
1194 | return -ENOMEM; |
1195 | } else { | |
2648345f | 1196 | /* Free old allocation, new allocation was successful */ |
1da177e4 LT |
1197 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
1198 | } | |
1199 | } | |
1200 | memset(rxdr->desc, 0, rxdr->size); | |
1201 | ||
1202 | rxdr->next_to_clean = 0; | |
1203 | rxdr->next_to_use = 0; | |
1204 | ||
1205 | return 0; | |
1206 | } | |
1207 | ||
1208 | /** | |
2648345f | 1209 | * e1000_setup_rctl - configure the receive control registers |
1da177e4 LT |
1210 | * @adapter: Board private structure |
1211 | **/ | |
1212 | ||
1213 | static void | |
1214 | e1000_setup_rctl(struct e1000_adapter *adapter) | |
1215 | { | |
2d7edb92 MC |
1216 | uint32_t rctl, rfctl; |
1217 | uint32_t psrctl = 0; | |
1da177e4 LT |
1218 | |
1219 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
1220 | ||
1221 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
1222 | ||
1223 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | | |
1224 | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | | |
1225 | (adapter->hw.mc_filter_type << E1000_RCTL_MO_SHIFT); | |
1226 | ||
1227 | if(adapter->hw.tbi_compatibility_on == 1) | |
1228 | rctl |= E1000_RCTL_SBP; | |
1229 | else | |
1230 | rctl &= ~E1000_RCTL_SBP; | |
1231 | ||
2d7edb92 MC |
1232 | if (adapter->netdev->mtu <= ETH_DATA_LEN) |
1233 | rctl &= ~E1000_RCTL_LPE; | |
1234 | else | |
1235 | rctl |= E1000_RCTL_LPE; | |
1236 | ||
1da177e4 | 1237 | /* Setup buffer sizes */ |
2d7edb92 MC |
1238 | if(adapter->hw.mac_type == e1000_82573) { |
1239 | /* We can now specify buffers in 1K increments. | |
1240 | * BSIZE and BSEX are ignored in this case. */ | |
1241 | rctl |= adapter->rx_buffer_len << 0x11; | |
1242 | } else { | |
1243 | rctl &= ~E1000_RCTL_SZ_4096; | |
1244 | rctl |= E1000_RCTL_BSEX; | |
1245 | switch (adapter->rx_buffer_len) { | |
1246 | case E1000_RXBUFFER_2048: | |
1247 | default: | |
1248 | rctl |= E1000_RCTL_SZ_2048; | |
1249 | rctl &= ~E1000_RCTL_BSEX; | |
1250 | break; | |
1251 | case E1000_RXBUFFER_4096: | |
1252 | rctl |= E1000_RCTL_SZ_4096; | |
1253 | break; | |
1254 | case E1000_RXBUFFER_8192: | |
1255 | rctl |= E1000_RCTL_SZ_8192; | |
1256 | break; | |
1257 | case E1000_RXBUFFER_16384: | |
1258 | rctl |= E1000_RCTL_SZ_16384; | |
1259 | break; | |
1260 | } | |
1261 | } | |
1262 | ||
1263 | #ifdef CONFIG_E1000_PACKET_SPLIT | |
1264 | /* 82571 and greater support packet-split where the protocol | |
1265 | * header is placed in skb->data and the packet data is | |
1266 | * placed in pages hanging off of skb_shinfo(skb)->nr_frags. | |
1267 | * In the case of a non-split, skb->data is linearly filled, | |
1268 | * followed by the page buffers. Therefore, skb->data is | |
1269 | * sized to hold the largest protocol header. | |
1270 | */ | |
1271 | adapter->rx_ps = (adapter->hw.mac_type > e1000_82547_rev_2) | |
1272 | && (adapter->netdev->mtu | |
1273 | < ((3 * PAGE_SIZE) + adapter->rx_ps_bsize0)); | |
1274 | #endif | |
1275 | if(adapter->rx_ps) { | |
1276 | /* Configure extra packet-split registers */ | |
1277 | rfctl = E1000_READ_REG(&adapter->hw, RFCTL); | |
1278 | rfctl |= E1000_RFCTL_EXTEN; | |
1279 | /* disable IPv6 packet split support */ | |
1280 | rfctl |= E1000_RFCTL_IPV6_DIS; | |
1281 | E1000_WRITE_REG(&adapter->hw, RFCTL, rfctl); | |
1282 | ||
1283 | rctl |= E1000_RCTL_DTYP_PS | E1000_RCTL_SECRC; | |
1284 | ||
1285 | psrctl |= adapter->rx_ps_bsize0 >> | |
1286 | E1000_PSRCTL_BSIZE0_SHIFT; | |
1287 | psrctl |= PAGE_SIZE >> | |
1288 | E1000_PSRCTL_BSIZE1_SHIFT; | |
1289 | psrctl |= PAGE_SIZE << | |
1290 | E1000_PSRCTL_BSIZE2_SHIFT; | |
1291 | psrctl |= PAGE_SIZE << | |
1292 | E1000_PSRCTL_BSIZE3_SHIFT; | |
1293 | ||
1294 | E1000_WRITE_REG(&adapter->hw, PSRCTL, psrctl); | |
1da177e4 LT |
1295 | } |
1296 | ||
1297 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
1298 | } | |
1299 | ||
1300 | /** | |
1301 | * e1000_configure_rx - Configure 8254x Receive Unit after Reset | |
1302 | * @adapter: board private structure | |
1303 | * | |
1304 | * Configure the Rx unit of the MAC after a reset. | |
1305 | **/ | |
1306 | ||
1307 | static void | |
1308 | e1000_configure_rx(struct e1000_adapter *adapter) | |
1309 | { | |
1310 | uint64_t rdba = adapter->rx_ring.dma; | |
2d7edb92 MC |
1311 | uint32_t rdlen, rctl, rxcsum; |
1312 | ||
1313 | if(adapter->rx_ps) { | |
1314 | rdlen = adapter->rx_ring.count * | |
1315 | sizeof(union e1000_rx_desc_packet_split); | |
1316 | adapter->clean_rx = e1000_clean_rx_irq_ps; | |
1317 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; | |
1318 | } else { | |
1319 | rdlen = adapter->rx_ring.count * sizeof(struct e1000_rx_desc); | |
1320 | adapter->clean_rx = e1000_clean_rx_irq; | |
1321 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers; | |
1322 | } | |
1da177e4 LT |
1323 | |
1324 | /* disable receives while setting up the descriptors */ | |
1325 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
1326 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl & ~E1000_RCTL_EN); | |
1327 | ||
1328 | /* set the Receive Delay Timer Register */ | |
1329 | E1000_WRITE_REG(&adapter->hw, RDTR, adapter->rx_int_delay); | |
1330 | ||
1331 | if(adapter->hw.mac_type >= e1000_82540) { | |
1332 | E1000_WRITE_REG(&adapter->hw, RADV, adapter->rx_abs_int_delay); | |
1333 | if(adapter->itr > 1) | |
1334 | E1000_WRITE_REG(&adapter->hw, ITR, | |
1335 | 1000000000 / (adapter->itr * 256)); | |
1336 | } | |
1337 | ||
1338 | /* Setup the Base and Length of the Rx Descriptor Ring */ | |
1339 | E1000_WRITE_REG(&adapter->hw, RDBAL, (rdba & 0x00000000ffffffffULL)); | |
1340 | E1000_WRITE_REG(&adapter->hw, RDBAH, (rdba >> 32)); | |
1341 | ||
1342 | E1000_WRITE_REG(&adapter->hw, RDLEN, rdlen); | |
1343 | ||
1344 | /* Setup the HW Rx Head and Tail Descriptor Pointers */ | |
1345 | E1000_WRITE_REG(&adapter->hw, RDH, 0); | |
1346 | E1000_WRITE_REG(&adapter->hw, RDT, 0); | |
1347 | ||
1348 | /* Enable 82543 Receive Checksum Offload for TCP and UDP */ | |
2d7edb92 | 1349 | if(adapter->hw.mac_type >= e1000_82543) { |
1da177e4 | 1350 | rxcsum = E1000_READ_REG(&adapter->hw, RXCSUM); |
2d7edb92 MC |
1351 | if(adapter->rx_csum == TRUE) { |
1352 | rxcsum |= E1000_RXCSUM_TUOFL; | |
1353 | ||
1354 | /* Enable 82573 IPv4 payload checksum for UDP fragments | |
1355 | * Must be used in conjunction with packet-split. */ | |
1356 | if((adapter->hw.mac_type > e1000_82547_rev_2) && | |
1357 | (adapter->rx_ps)) { | |
1358 | rxcsum |= E1000_RXCSUM_IPPCSE; | |
1359 | } | |
1360 | } else { | |
1361 | rxcsum &= ~E1000_RXCSUM_TUOFL; | |
1362 | /* don't need to clear IPPCSE as it defaults to 0 */ | |
1363 | } | |
1da177e4 LT |
1364 | E1000_WRITE_REG(&adapter->hw, RXCSUM, rxcsum); |
1365 | } | |
1366 | ||
2d7edb92 MC |
1367 | if (adapter->hw.mac_type == e1000_82573) |
1368 | E1000_WRITE_REG(&adapter->hw, ERT, 0x0100); | |
1369 | ||
1da177e4 LT |
1370 | /* Enable Receives */ |
1371 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
1372 | } | |
1373 | ||
1374 | /** | |
1375 | * e1000_free_tx_resources - Free Tx Resources | |
1376 | * @adapter: board private structure | |
1377 | * | |
1378 | * Free all transmit software resources | |
1379 | **/ | |
1380 | ||
1381 | void | |
1382 | e1000_free_tx_resources(struct e1000_adapter *adapter) | |
1383 | { | |
1384 | struct pci_dev *pdev = adapter->pdev; | |
1385 | ||
1386 | e1000_clean_tx_ring(adapter); | |
1387 | ||
1388 | vfree(adapter->tx_ring.buffer_info); | |
1389 | adapter->tx_ring.buffer_info = NULL; | |
1390 | ||
1391 | pci_free_consistent(pdev, adapter->tx_ring.size, | |
1392 | adapter->tx_ring.desc, adapter->tx_ring.dma); | |
1393 | ||
1394 | adapter->tx_ring.desc = NULL; | |
1395 | } | |
1396 | ||
1397 | static inline void | |
1398 | e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, | |
1399 | struct e1000_buffer *buffer_info) | |
1400 | { | |
1da177e4 | 1401 | if(buffer_info->dma) { |
2648345f MC |
1402 | pci_unmap_page(adapter->pdev, |
1403 | buffer_info->dma, | |
1404 | buffer_info->length, | |
1405 | PCI_DMA_TODEVICE); | |
1da177e4 LT |
1406 | buffer_info->dma = 0; |
1407 | } | |
1408 | if(buffer_info->skb) { | |
1409 | dev_kfree_skb_any(buffer_info->skb); | |
1410 | buffer_info->skb = NULL; | |
1411 | } | |
1412 | } | |
1413 | ||
1414 | /** | |
1415 | * e1000_clean_tx_ring - Free Tx Buffers | |
1416 | * @adapter: board private structure | |
1417 | **/ | |
1418 | ||
1419 | static void | |
1420 | e1000_clean_tx_ring(struct e1000_adapter *adapter) | |
1421 | { | |
1422 | struct e1000_desc_ring *tx_ring = &adapter->tx_ring; | |
1423 | struct e1000_buffer *buffer_info; | |
1424 | unsigned long size; | |
1425 | unsigned int i; | |
1426 | ||
1427 | /* Free all the Tx ring sk_buffs */ | |
1428 | ||
1429 | if (likely(adapter->previous_buffer_info.skb != NULL)) { | |
2648345f | 1430 | e1000_unmap_and_free_tx_resource(adapter, |
1da177e4 LT |
1431 | &adapter->previous_buffer_info); |
1432 | } | |
1433 | ||
1434 | for(i = 0; i < tx_ring->count; i++) { | |
1435 | buffer_info = &tx_ring->buffer_info[i]; | |
1436 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); | |
1437 | } | |
1438 | ||
1439 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
1440 | memset(tx_ring->buffer_info, 0, size); | |
1441 | ||
1442 | /* Zero out the descriptor ring */ | |
1443 | ||
1444 | memset(tx_ring->desc, 0, tx_ring->size); | |
1445 | ||
1446 | tx_ring->next_to_use = 0; | |
1447 | tx_ring->next_to_clean = 0; | |
1448 | ||
1449 | E1000_WRITE_REG(&adapter->hw, TDH, 0); | |
1450 | E1000_WRITE_REG(&adapter->hw, TDT, 0); | |
1451 | } | |
1452 | ||
1453 | /** | |
1454 | * e1000_free_rx_resources - Free Rx Resources | |
1455 | * @adapter: board private structure | |
1456 | * | |
1457 | * Free all receive software resources | |
1458 | **/ | |
1459 | ||
1460 | void | |
1461 | e1000_free_rx_resources(struct e1000_adapter *adapter) | |
1462 | { | |
1463 | struct e1000_desc_ring *rx_ring = &adapter->rx_ring; | |
1464 | struct pci_dev *pdev = adapter->pdev; | |
1465 | ||
1466 | e1000_clean_rx_ring(adapter); | |
1467 | ||
1468 | vfree(rx_ring->buffer_info); | |
1469 | rx_ring->buffer_info = NULL; | |
2d7edb92 MC |
1470 | kfree(rx_ring->ps_page); |
1471 | rx_ring->ps_page = NULL; | |
1472 | kfree(rx_ring->ps_page_dma); | |
1473 | rx_ring->ps_page_dma = NULL; | |
1da177e4 LT |
1474 | |
1475 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
1476 | ||
1477 | rx_ring->desc = NULL; | |
1478 | } | |
1479 | ||
1480 | /** | |
1481 | * e1000_clean_rx_ring - Free Rx Buffers | |
1482 | * @adapter: board private structure | |
1483 | **/ | |
1484 | ||
1485 | static void | |
1486 | e1000_clean_rx_ring(struct e1000_adapter *adapter) | |
1487 | { | |
1488 | struct e1000_desc_ring *rx_ring = &adapter->rx_ring; | |
1489 | struct e1000_buffer *buffer_info; | |
2d7edb92 MC |
1490 | struct e1000_ps_page *ps_page; |
1491 | struct e1000_ps_page_dma *ps_page_dma; | |
1da177e4 LT |
1492 | struct pci_dev *pdev = adapter->pdev; |
1493 | unsigned long size; | |
2d7edb92 | 1494 | unsigned int i, j; |
1da177e4 LT |
1495 | |
1496 | /* Free all the Rx ring sk_buffs */ | |
1497 | ||
1498 | for(i = 0; i < rx_ring->count; i++) { | |
1499 | buffer_info = &rx_ring->buffer_info[i]; | |
1500 | if(buffer_info->skb) { | |
2d7edb92 MC |
1501 | ps_page = &rx_ring->ps_page[i]; |
1502 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
1da177e4 LT |
1503 | pci_unmap_single(pdev, |
1504 | buffer_info->dma, | |
1505 | buffer_info->length, | |
1506 | PCI_DMA_FROMDEVICE); | |
1507 | ||
1508 | dev_kfree_skb(buffer_info->skb); | |
1509 | buffer_info->skb = NULL; | |
2d7edb92 MC |
1510 | |
1511 | for(j = 0; j < PS_PAGE_BUFFERS; j++) { | |
1512 | if(!ps_page->ps_page[j]) break; | |
1513 | pci_unmap_single(pdev, | |
1514 | ps_page_dma->ps_page_dma[j], | |
1515 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
1516 | ps_page_dma->ps_page_dma[j] = 0; | |
1517 | put_page(ps_page->ps_page[j]); | |
1518 | ps_page->ps_page[j] = NULL; | |
1519 | } | |
1da177e4 LT |
1520 | } |
1521 | } | |
1522 | ||
1523 | size = sizeof(struct e1000_buffer) * rx_ring->count; | |
1524 | memset(rx_ring->buffer_info, 0, size); | |
2d7edb92 MC |
1525 | size = sizeof(struct e1000_ps_page) * rx_ring->count; |
1526 | memset(rx_ring->ps_page, 0, size); | |
1527 | size = sizeof(struct e1000_ps_page_dma) * rx_ring->count; | |
1528 | memset(rx_ring->ps_page_dma, 0, size); | |
1da177e4 LT |
1529 | |
1530 | /* Zero out the descriptor ring */ | |
1531 | ||
1532 | memset(rx_ring->desc, 0, rx_ring->size); | |
1533 | ||
1534 | rx_ring->next_to_clean = 0; | |
1535 | rx_ring->next_to_use = 0; | |
1536 | ||
1537 | E1000_WRITE_REG(&adapter->hw, RDH, 0); | |
1538 | E1000_WRITE_REG(&adapter->hw, RDT, 0); | |
1539 | } | |
1540 | ||
1541 | /* The 82542 2.0 (revision 2) needs to have the receive unit in reset | |
1542 | * and memory write and invalidate disabled for certain operations | |
1543 | */ | |
1544 | static void | |
1545 | e1000_enter_82542_rst(struct e1000_adapter *adapter) | |
1546 | { | |
1547 | struct net_device *netdev = adapter->netdev; | |
1548 | uint32_t rctl; | |
1549 | ||
1550 | e1000_pci_clear_mwi(&adapter->hw); | |
1551 | ||
1552 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
1553 | rctl |= E1000_RCTL_RST; | |
1554 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
1555 | E1000_WRITE_FLUSH(&adapter->hw); | |
1556 | mdelay(5); | |
1557 | ||
1558 | if(netif_running(netdev)) | |
1559 | e1000_clean_rx_ring(adapter); | |
1560 | } | |
1561 | ||
1562 | static void | |
1563 | e1000_leave_82542_rst(struct e1000_adapter *adapter) | |
1564 | { | |
1565 | struct net_device *netdev = adapter->netdev; | |
1566 | uint32_t rctl; | |
1567 | ||
1568 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
1569 | rctl &= ~E1000_RCTL_RST; | |
1570 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
1571 | E1000_WRITE_FLUSH(&adapter->hw); | |
1572 | mdelay(5); | |
1573 | ||
1574 | if(adapter->hw.pci_cmd_word & PCI_COMMAND_INVALIDATE) | |
1575 | e1000_pci_set_mwi(&adapter->hw); | |
1576 | ||
1577 | if(netif_running(netdev)) { | |
1578 | e1000_configure_rx(adapter); | |
1579 | e1000_alloc_rx_buffers(adapter); | |
1580 | } | |
1581 | } | |
1582 | ||
1583 | /** | |
1584 | * e1000_set_mac - Change the Ethernet Address of the NIC | |
1585 | * @netdev: network interface device structure | |
1586 | * @p: pointer to an address structure | |
1587 | * | |
1588 | * Returns 0 on success, negative on failure | |
1589 | **/ | |
1590 | ||
1591 | static int | |
1592 | e1000_set_mac(struct net_device *netdev, void *p) | |
1593 | { | |
60490fe0 | 1594 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1595 | struct sockaddr *addr = p; |
1596 | ||
1597 | if(!is_valid_ether_addr(addr->sa_data)) | |
1598 | return -EADDRNOTAVAIL; | |
1599 | ||
1600 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
1601 | ||
1602 | if(adapter->hw.mac_type == e1000_82542_rev2_0) | |
1603 | e1000_enter_82542_rst(adapter); | |
1604 | ||
1605 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
1606 | memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); | |
1607 | ||
1608 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0); | |
1609 | ||
1610 | if(adapter->hw.mac_type == e1000_82542_rev2_0) | |
1611 | e1000_leave_82542_rst(adapter); | |
1612 | ||
1613 | return 0; | |
1614 | } | |
1615 | ||
1616 | /** | |
1617 | * e1000_set_multi - Multicast and Promiscuous mode set | |
1618 | * @netdev: network interface device structure | |
1619 | * | |
1620 | * The set_multi entry point is called whenever the multicast address | |
1621 | * list or the network interface flags are updated. This routine is | |
1622 | * responsible for configuring the hardware for proper multicast, | |
1623 | * promiscuous mode, and all-multi behavior. | |
1624 | **/ | |
1625 | ||
1626 | static void | |
1627 | e1000_set_multi(struct net_device *netdev) | |
1628 | { | |
60490fe0 | 1629 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1630 | struct e1000_hw *hw = &adapter->hw; |
1631 | struct dev_mc_list *mc_ptr; | |
2648345f | 1632 | unsigned long flags; |
1da177e4 LT |
1633 | uint32_t rctl; |
1634 | uint32_t hash_value; | |
1635 | int i; | |
1da177e4 LT |
1636 | |
1637 | spin_lock_irqsave(&adapter->tx_lock, flags); | |
1638 | ||
2648345f MC |
1639 | /* Check for Promiscuous and All Multicast modes */ |
1640 | ||
1da177e4 LT |
1641 | rctl = E1000_READ_REG(hw, RCTL); |
1642 | ||
1643 | if(netdev->flags & IFF_PROMISC) { | |
1644 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); | |
1645 | } else if(netdev->flags & IFF_ALLMULTI) { | |
1646 | rctl |= E1000_RCTL_MPE; | |
1647 | rctl &= ~E1000_RCTL_UPE; | |
1648 | } else { | |
1649 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); | |
1650 | } | |
1651 | ||
1652 | E1000_WRITE_REG(hw, RCTL, rctl); | |
1653 | ||
1654 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
1655 | ||
1656 | if(hw->mac_type == e1000_82542_rev2_0) | |
1657 | e1000_enter_82542_rst(adapter); | |
1658 | ||
1659 | /* load the first 14 multicast address into the exact filters 1-14 | |
1660 | * RAR 0 is used for the station MAC adddress | |
1661 | * if there are not 14 addresses, go ahead and clear the filters | |
1662 | */ | |
1663 | mc_ptr = netdev->mc_list; | |
1664 | ||
1665 | for(i = 1; i < E1000_RAR_ENTRIES; i++) { | |
1666 | if(mc_ptr) { | |
1667 | e1000_rar_set(hw, mc_ptr->dmi_addr, i); | |
1668 | mc_ptr = mc_ptr->next; | |
1669 | } else { | |
1670 | E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); | |
1671 | E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); | |
1672 | } | |
1673 | } | |
1674 | ||
1675 | /* clear the old settings from the multicast hash table */ | |
1676 | ||
1677 | for(i = 0; i < E1000_NUM_MTA_REGISTERS; i++) | |
1678 | E1000_WRITE_REG_ARRAY(hw, MTA, i, 0); | |
1679 | ||
1680 | /* load any remaining addresses into the hash table */ | |
1681 | ||
1682 | for(; mc_ptr; mc_ptr = mc_ptr->next) { | |
1683 | hash_value = e1000_hash_mc_addr(hw, mc_ptr->dmi_addr); | |
1684 | e1000_mta_set(hw, hash_value); | |
1685 | } | |
1686 | ||
1687 | if(hw->mac_type == e1000_82542_rev2_0) | |
1688 | e1000_leave_82542_rst(adapter); | |
1689 | ||
1690 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
1691 | } | |
1692 | ||
1693 | /* Need to wait a few seconds after link up to get diagnostic information from | |
1694 | * the phy */ | |
1695 | ||
1696 | static void | |
1697 | e1000_update_phy_info(unsigned long data) | |
1698 | { | |
1699 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
1700 | e1000_phy_get_info(&adapter->hw, &adapter->phy_info); | |
1701 | } | |
1702 | ||
1703 | /** | |
1704 | * e1000_82547_tx_fifo_stall - Timer Call-back | |
1705 | * @data: pointer to adapter cast into an unsigned long | |
1706 | **/ | |
1707 | ||
1708 | static void | |
1709 | e1000_82547_tx_fifo_stall(unsigned long data) | |
1710 | { | |
1711 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
1712 | struct net_device *netdev = adapter->netdev; | |
1713 | uint32_t tctl; | |
1714 | ||
1715 | if(atomic_read(&adapter->tx_fifo_stall)) { | |
1716 | if((E1000_READ_REG(&adapter->hw, TDT) == | |
1717 | E1000_READ_REG(&adapter->hw, TDH)) && | |
1718 | (E1000_READ_REG(&adapter->hw, TDFT) == | |
1719 | E1000_READ_REG(&adapter->hw, TDFH)) && | |
1720 | (E1000_READ_REG(&adapter->hw, TDFTS) == | |
1721 | E1000_READ_REG(&adapter->hw, TDFHS))) { | |
1722 | tctl = E1000_READ_REG(&adapter->hw, TCTL); | |
1723 | E1000_WRITE_REG(&adapter->hw, TCTL, | |
1724 | tctl & ~E1000_TCTL_EN); | |
1725 | E1000_WRITE_REG(&adapter->hw, TDFT, | |
1726 | adapter->tx_head_addr); | |
1727 | E1000_WRITE_REG(&adapter->hw, TDFH, | |
1728 | adapter->tx_head_addr); | |
1729 | E1000_WRITE_REG(&adapter->hw, TDFTS, | |
1730 | adapter->tx_head_addr); | |
1731 | E1000_WRITE_REG(&adapter->hw, TDFHS, | |
1732 | adapter->tx_head_addr); | |
1733 | E1000_WRITE_REG(&adapter->hw, TCTL, tctl); | |
1734 | E1000_WRITE_FLUSH(&adapter->hw); | |
1735 | ||
1736 | adapter->tx_fifo_head = 0; | |
1737 | atomic_set(&adapter->tx_fifo_stall, 0); | |
1738 | netif_wake_queue(netdev); | |
1739 | } else { | |
1740 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); | |
1741 | } | |
1742 | } | |
1743 | } | |
1744 | ||
1745 | /** | |
1746 | * e1000_watchdog - Timer Call-back | |
1747 | * @data: pointer to adapter cast into an unsigned long | |
1748 | **/ | |
1749 | static void | |
1750 | e1000_watchdog(unsigned long data) | |
1751 | { | |
1752 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
1753 | ||
1754 | /* Do the rest outside of interrupt context */ | |
1755 | schedule_work(&adapter->watchdog_task); | |
1756 | } | |
1757 | ||
1758 | static void | |
1759 | e1000_watchdog_task(struct e1000_adapter *adapter) | |
1760 | { | |
1761 | struct net_device *netdev = adapter->netdev; | |
1762 | struct e1000_desc_ring *txdr = &adapter->tx_ring; | |
1763 | uint32_t link; | |
1764 | ||
1765 | e1000_check_for_link(&adapter->hw); | |
2d7edb92 MC |
1766 | if (adapter->hw.mac_type == e1000_82573) { |
1767 | e1000_enable_tx_pkt_filtering(&adapter->hw); | |
1768 | if(adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id) | |
1769 | e1000_update_mng_vlan(adapter); | |
1770 | } | |
1da177e4 LT |
1771 | |
1772 | if((adapter->hw.media_type == e1000_media_type_internal_serdes) && | |
1773 | !(E1000_READ_REG(&adapter->hw, TXCW) & E1000_TXCW_ANE)) | |
1774 | link = !adapter->hw.serdes_link_down; | |
1775 | else | |
1776 | link = E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU; | |
1777 | ||
1778 | if(link) { | |
1779 | if(!netif_carrier_ok(netdev)) { | |
1780 | e1000_get_speed_and_duplex(&adapter->hw, | |
1781 | &adapter->link_speed, | |
1782 | &adapter->link_duplex); | |
1783 | ||
1784 | DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s\n", | |
1785 | adapter->link_speed, | |
1786 | adapter->link_duplex == FULL_DUPLEX ? | |
1787 | "Full Duplex" : "Half Duplex"); | |
1788 | ||
1789 | netif_carrier_on(netdev); | |
1790 | netif_wake_queue(netdev); | |
1791 | mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ); | |
1792 | adapter->smartspeed = 0; | |
1793 | } | |
1794 | } else { | |
1795 | if(netif_carrier_ok(netdev)) { | |
1796 | adapter->link_speed = 0; | |
1797 | adapter->link_duplex = 0; | |
1798 | DPRINTK(LINK, INFO, "NIC Link is Down\n"); | |
1799 | netif_carrier_off(netdev); | |
1800 | netif_stop_queue(netdev); | |
1801 | mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ); | |
1802 | } | |
1803 | ||
1804 | e1000_smartspeed(adapter); | |
1805 | } | |
1806 | ||
1807 | e1000_update_stats(adapter); | |
1808 | ||
1809 | adapter->hw.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; | |
1810 | adapter->tpt_old = adapter->stats.tpt; | |
1811 | adapter->hw.collision_delta = adapter->stats.colc - adapter->colc_old; | |
1812 | adapter->colc_old = adapter->stats.colc; | |
1813 | ||
1814 | adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; | |
1815 | adapter->gorcl_old = adapter->stats.gorcl; | |
1816 | adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; | |
1817 | adapter->gotcl_old = adapter->stats.gotcl; | |
1818 | ||
1819 | e1000_update_adaptive(&adapter->hw); | |
1820 | ||
1821 | if(!netif_carrier_ok(netdev)) { | |
1822 | if(E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { | |
1823 | /* We've lost link, so the controller stops DMA, | |
1824 | * but we've got queued Tx work that's never going | |
1825 | * to get done, so reset controller to flush Tx. | |
1826 | * (Do the reset outside of interrupt context). */ | |
1827 | schedule_work(&adapter->tx_timeout_task); | |
1828 | } | |
1829 | } | |
1830 | ||
1831 | /* Dynamic mode for Interrupt Throttle Rate (ITR) */ | |
1832 | if(adapter->hw.mac_type >= e1000_82540 && adapter->itr == 1) { | |
1833 | /* Symmetric Tx/Rx gets a reduced ITR=2000; Total | |
1834 | * asymmetrical Tx or Rx gets ITR=8000; everyone | |
1835 | * else is between 2000-8000. */ | |
1836 | uint32_t goc = (adapter->gotcl + adapter->gorcl) / 10000; | |
1837 | uint32_t dif = (adapter->gotcl > adapter->gorcl ? | |
1838 | adapter->gotcl - adapter->gorcl : | |
1839 | adapter->gorcl - adapter->gotcl) / 10000; | |
1840 | uint32_t itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; | |
1841 | E1000_WRITE_REG(&adapter->hw, ITR, 1000000000 / (itr * 256)); | |
1842 | } | |
1843 | ||
1844 | /* Cause software interrupt to ensure rx ring is cleaned */ | |
1845 | E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_RXDMT0); | |
1846 | ||
2648345f | 1847 | /* Force detection of hung controller every watchdog period */ |
1da177e4 LT |
1848 | adapter->detect_tx_hung = TRUE; |
1849 | ||
1850 | /* Reset the timer */ | |
1851 | mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ); | |
1852 | } | |
1853 | ||
1854 | #define E1000_TX_FLAGS_CSUM 0x00000001 | |
1855 | #define E1000_TX_FLAGS_VLAN 0x00000002 | |
1856 | #define E1000_TX_FLAGS_TSO 0x00000004 | |
2d7edb92 | 1857 | #define E1000_TX_FLAGS_IPV4 0x00000008 |
1da177e4 LT |
1858 | #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
1859 | #define E1000_TX_FLAGS_VLAN_SHIFT 16 | |
1860 | ||
1861 | static inline int | |
1862 | e1000_tso(struct e1000_adapter *adapter, struct sk_buff *skb) | |
1863 | { | |
1864 | #ifdef NETIF_F_TSO | |
1865 | struct e1000_context_desc *context_desc; | |
1866 | unsigned int i; | |
1867 | uint32_t cmd_length = 0; | |
2d7edb92 | 1868 | uint16_t ipcse = 0, tucse, mss; |
1da177e4 LT |
1869 | uint8_t ipcss, ipcso, tucss, tucso, hdr_len; |
1870 | int err; | |
1871 | ||
1872 | if(skb_shinfo(skb)->tso_size) { | |
1873 | if (skb_header_cloned(skb)) { | |
1874 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
1875 | if (err) | |
1876 | return err; | |
1877 | } | |
1878 | ||
1879 | hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2)); | |
1880 | mss = skb_shinfo(skb)->tso_size; | |
2d7edb92 MC |
1881 | if(skb->protocol == ntohs(ETH_P_IP)) { |
1882 | skb->nh.iph->tot_len = 0; | |
1883 | skb->nh.iph->check = 0; | |
1884 | skb->h.th->check = | |
1885 | ~csum_tcpudp_magic(skb->nh.iph->saddr, | |
1886 | skb->nh.iph->daddr, | |
1887 | 0, | |
1888 | IPPROTO_TCP, | |
1889 | 0); | |
1890 | cmd_length = E1000_TXD_CMD_IP; | |
1891 | ipcse = skb->h.raw - skb->data - 1; | |
1892 | #ifdef NETIF_F_TSO_IPV6 | |
1893 | } else if(skb->protocol == ntohs(ETH_P_IPV6)) { | |
1894 | skb->nh.ipv6h->payload_len = 0; | |
1895 | skb->h.th->check = | |
1896 | ~csum_ipv6_magic(&skb->nh.ipv6h->saddr, | |
1897 | &skb->nh.ipv6h->daddr, | |
1898 | 0, | |
1899 | IPPROTO_TCP, | |
1900 | 0); | |
1901 | ipcse = 0; | |
1902 | #endif | |
1903 | } | |
1da177e4 LT |
1904 | ipcss = skb->nh.raw - skb->data; |
1905 | ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data; | |
1da177e4 LT |
1906 | tucss = skb->h.raw - skb->data; |
1907 | tucso = (void *)&(skb->h.th->check) - (void *)skb->data; | |
1908 | tucse = 0; | |
1909 | ||
1910 | cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | | |
2d7edb92 | 1911 | E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
1da177e4 LT |
1912 | |
1913 | i = adapter->tx_ring.next_to_use; | |
1914 | context_desc = E1000_CONTEXT_DESC(adapter->tx_ring, i); | |
1915 | ||
1916 | context_desc->lower_setup.ip_fields.ipcss = ipcss; | |
1917 | context_desc->lower_setup.ip_fields.ipcso = ipcso; | |
1918 | context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); | |
1919 | context_desc->upper_setup.tcp_fields.tucss = tucss; | |
1920 | context_desc->upper_setup.tcp_fields.tucso = tucso; | |
1921 | context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); | |
1922 | context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); | |
1923 | context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; | |
1924 | context_desc->cmd_and_length = cpu_to_le32(cmd_length); | |
1925 | ||
1926 | if(++i == adapter->tx_ring.count) i = 0; | |
1927 | adapter->tx_ring.next_to_use = i; | |
1928 | ||
1929 | return 1; | |
1930 | } | |
1931 | #endif | |
1932 | ||
1933 | return 0; | |
1934 | } | |
1935 | ||
1936 | static inline boolean_t | |
1937 | e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb) | |
1938 | { | |
1939 | struct e1000_context_desc *context_desc; | |
1940 | unsigned int i; | |
1941 | uint8_t css; | |
1942 | ||
1943 | if(likely(skb->ip_summed == CHECKSUM_HW)) { | |
1944 | css = skb->h.raw - skb->data; | |
1945 | ||
1946 | i = adapter->tx_ring.next_to_use; | |
1947 | context_desc = E1000_CONTEXT_DESC(adapter->tx_ring, i); | |
1948 | ||
1949 | context_desc->upper_setup.tcp_fields.tucss = css; | |
1950 | context_desc->upper_setup.tcp_fields.tucso = css + skb->csum; | |
1951 | context_desc->upper_setup.tcp_fields.tucse = 0; | |
1952 | context_desc->tcp_seg_setup.data = 0; | |
1953 | context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT); | |
1954 | ||
1955 | if(unlikely(++i == adapter->tx_ring.count)) i = 0; | |
1956 | adapter->tx_ring.next_to_use = i; | |
1957 | ||
1958 | return TRUE; | |
1959 | } | |
1960 | ||
1961 | return FALSE; | |
1962 | } | |
1963 | ||
1964 | #define E1000_MAX_TXD_PWR 12 | |
1965 | #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) | |
1966 | ||
1967 | static inline int | |
1968 | e1000_tx_map(struct e1000_adapter *adapter, struct sk_buff *skb, | |
1969 | unsigned int first, unsigned int max_per_txd, | |
1970 | unsigned int nr_frags, unsigned int mss) | |
1971 | { | |
1972 | struct e1000_desc_ring *tx_ring = &adapter->tx_ring; | |
1973 | struct e1000_buffer *buffer_info; | |
1974 | unsigned int len = skb->len; | |
1975 | unsigned int offset = 0, size, count = 0, i; | |
1976 | unsigned int f; | |
1977 | len -= skb->data_len; | |
1978 | ||
1979 | i = tx_ring->next_to_use; | |
1980 | ||
1981 | while(len) { | |
1982 | buffer_info = &tx_ring->buffer_info[i]; | |
1983 | size = min(len, max_per_txd); | |
1984 | #ifdef NETIF_F_TSO | |
1985 | /* Workaround for premature desc write-backs | |
1986 | * in TSO mode. Append 4-byte sentinel desc */ | |
1987 | if(unlikely(mss && !nr_frags && size == len && size > 8)) | |
1988 | size -= 4; | |
1989 | #endif | |
97338bde MC |
1990 | /* work-around for errata 10 and it applies |
1991 | * to all controllers in PCI-X mode | |
1992 | * The fix is to make sure that the first descriptor of a | |
1993 | * packet is smaller than 2048 - 16 - 16 (or 2016) bytes | |
1994 | */ | |
1995 | if(unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && | |
1996 | (size > 2015) && count == 0)) | |
1997 | size = 2015; | |
1998 | ||
1da177e4 LT |
1999 | /* Workaround for potential 82544 hang in PCI-X. Avoid |
2000 | * terminating buffers within evenly-aligned dwords. */ | |
2001 | if(unlikely(adapter->pcix_82544 && | |
2002 | !((unsigned long)(skb->data + offset + size - 1) & 4) && | |
2003 | size > 4)) | |
2004 | size -= 4; | |
2005 | ||
2006 | buffer_info->length = size; | |
2007 | buffer_info->dma = | |
2008 | pci_map_single(adapter->pdev, | |
2009 | skb->data + offset, | |
2010 | size, | |
2011 | PCI_DMA_TODEVICE); | |
2012 | buffer_info->time_stamp = jiffies; | |
2013 | ||
2014 | len -= size; | |
2015 | offset += size; | |
2016 | count++; | |
2017 | if(unlikely(++i == tx_ring->count)) i = 0; | |
2018 | } | |
2019 | ||
2020 | for(f = 0; f < nr_frags; f++) { | |
2021 | struct skb_frag_struct *frag; | |
2022 | ||
2023 | frag = &skb_shinfo(skb)->frags[f]; | |
2024 | len = frag->size; | |
2025 | offset = frag->page_offset; | |
2026 | ||
2027 | while(len) { | |
2028 | buffer_info = &tx_ring->buffer_info[i]; | |
2029 | size = min(len, max_per_txd); | |
2030 | #ifdef NETIF_F_TSO | |
2031 | /* Workaround for premature desc write-backs | |
2032 | * in TSO mode. Append 4-byte sentinel desc */ | |
2033 | if(unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) | |
2034 | size -= 4; | |
2035 | #endif | |
2036 | /* Workaround for potential 82544 hang in PCI-X. | |
2037 | * Avoid terminating buffers within evenly-aligned | |
2038 | * dwords. */ | |
2039 | if(unlikely(adapter->pcix_82544 && | |
2040 | !((unsigned long)(frag->page+offset+size-1) & 4) && | |
2041 | size > 4)) | |
2042 | size -= 4; | |
2043 | ||
2044 | buffer_info->length = size; | |
2045 | buffer_info->dma = | |
2046 | pci_map_page(adapter->pdev, | |
2047 | frag->page, | |
2048 | offset, | |
2049 | size, | |
2050 | PCI_DMA_TODEVICE); | |
2051 | buffer_info->time_stamp = jiffies; | |
2052 | ||
2053 | len -= size; | |
2054 | offset += size; | |
2055 | count++; | |
2056 | if(unlikely(++i == tx_ring->count)) i = 0; | |
2057 | } | |
2058 | } | |
2059 | ||
2060 | i = (i == 0) ? tx_ring->count - 1 : i - 1; | |
2061 | tx_ring->buffer_info[i].skb = skb; | |
2062 | tx_ring->buffer_info[first].next_to_watch = i; | |
2063 | ||
2064 | return count; | |
2065 | } | |
2066 | ||
2067 | static inline void | |
2068 | e1000_tx_queue(struct e1000_adapter *adapter, int count, int tx_flags) | |
2069 | { | |
2070 | struct e1000_desc_ring *tx_ring = &adapter->tx_ring; | |
2071 | struct e1000_tx_desc *tx_desc = NULL; | |
2072 | struct e1000_buffer *buffer_info; | |
2073 | uint32_t txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; | |
2074 | unsigned int i; | |
2075 | ||
2076 | if(likely(tx_flags & E1000_TX_FLAGS_TSO)) { | |
2077 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | | |
2078 | E1000_TXD_CMD_TSE; | |
2d7edb92 MC |
2079 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
2080 | ||
2081 | if(likely(tx_flags & E1000_TX_FLAGS_IPV4)) | |
2082 | txd_upper |= E1000_TXD_POPTS_IXSM << 8; | |
1da177e4 LT |
2083 | } |
2084 | ||
2085 | if(likely(tx_flags & E1000_TX_FLAGS_CSUM)) { | |
2086 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; | |
2087 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
2088 | } | |
2089 | ||
2090 | if(unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { | |
2091 | txd_lower |= E1000_TXD_CMD_VLE; | |
2092 | txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); | |
2093 | } | |
2094 | ||
2095 | i = tx_ring->next_to_use; | |
2096 | ||
2097 | while(count--) { | |
2098 | buffer_info = &tx_ring->buffer_info[i]; | |
2099 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
2100 | tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
2101 | tx_desc->lower.data = | |
2102 | cpu_to_le32(txd_lower | buffer_info->length); | |
2103 | tx_desc->upper.data = cpu_to_le32(txd_upper); | |
2104 | if(unlikely(++i == tx_ring->count)) i = 0; | |
2105 | } | |
2106 | ||
2107 | tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); | |
2108 | ||
2109 | /* Force memory writes to complete before letting h/w | |
2110 | * know there are new descriptors to fetch. (Only | |
2111 | * applicable for weak-ordered memory model archs, | |
2112 | * such as IA-64). */ | |
2113 | wmb(); | |
2114 | ||
2115 | tx_ring->next_to_use = i; | |
2116 | E1000_WRITE_REG(&adapter->hw, TDT, i); | |
2117 | } | |
2118 | ||
2119 | /** | |
2120 | * 82547 workaround to avoid controller hang in half-duplex environment. | |
2121 | * The workaround is to avoid queuing a large packet that would span | |
2122 | * the internal Tx FIFO ring boundary by notifying the stack to resend | |
2123 | * the packet at a later time. This gives the Tx FIFO an opportunity to | |
2124 | * flush all packets. When that occurs, we reset the Tx FIFO pointers | |
2125 | * to the beginning of the Tx FIFO. | |
2126 | **/ | |
2127 | ||
2128 | #define E1000_FIFO_HDR 0x10 | |
2129 | #define E1000_82547_PAD_LEN 0x3E0 | |
2130 | ||
2131 | static inline int | |
2132 | e1000_82547_fifo_workaround(struct e1000_adapter *adapter, struct sk_buff *skb) | |
2133 | { | |
2134 | uint32_t fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; | |
2135 | uint32_t skb_fifo_len = skb->len + E1000_FIFO_HDR; | |
2136 | ||
2137 | E1000_ROUNDUP(skb_fifo_len, E1000_FIFO_HDR); | |
2138 | ||
2139 | if(adapter->link_duplex != HALF_DUPLEX) | |
2140 | goto no_fifo_stall_required; | |
2141 | ||
2142 | if(atomic_read(&adapter->tx_fifo_stall)) | |
2143 | return 1; | |
2144 | ||
2145 | if(skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { | |
2146 | atomic_set(&adapter->tx_fifo_stall, 1); | |
2147 | return 1; | |
2148 | } | |
2149 | ||
2150 | no_fifo_stall_required: | |
2151 | adapter->tx_fifo_head += skb_fifo_len; | |
2152 | if(adapter->tx_fifo_head >= adapter->tx_fifo_size) | |
2153 | adapter->tx_fifo_head -= adapter->tx_fifo_size; | |
2154 | return 0; | |
2155 | } | |
2156 | ||
2d7edb92 MC |
2157 | #define MINIMUM_DHCP_PACKET_SIZE 282 |
2158 | static inline int | |
2159 | e1000_transfer_dhcp_info(struct e1000_adapter *adapter, struct sk_buff *skb) | |
2160 | { | |
2161 | struct e1000_hw *hw = &adapter->hw; | |
2162 | uint16_t length, offset; | |
2163 | if(vlan_tx_tag_present(skb)) { | |
2164 | if(!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) && | |
2165 | ( adapter->hw.mng_cookie.status & | |
2166 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) ) | |
2167 | return 0; | |
2168 | } | |
2169 | if(htons(ETH_P_IP) == skb->protocol) { | |
2170 | const struct iphdr *ip = skb->nh.iph; | |
2171 | if(IPPROTO_UDP == ip->protocol) { | |
2172 | struct udphdr *udp = (struct udphdr *)(skb->h.uh); | |
2173 | if(ntohs(udp->dest) == 67) { | |
2174 | offset = (uint8_t *)udp + 8 - skb->data; | |
2175 | length = skb->len - offset; | |
2176 | ||
2177 | return e1000_mng_write_dhcp_info(hw, | |
2178 | (uint8_t *)udp + 8, length); | |
2179 | } | |
2180 | } | |
2181 | } else if((skb->len > MINIMUM_DHCP_PACKET_SIZE) && (!skb->protocol)) { | |
2182 | struct ethhdr *eth = (struct ethhdr *) skb->data; | |
2183 | if((htons(ETH_P_IP) == eth->h_proto)) { | |
2184 | const struct iphdr *ip = | |
2185 | (struct iphdr *)((uint8_t *)skb->data+14); | |
2186 | if(IPPROTO_UDP == ip->protocol) { | |
2187 | struct udphdr *udp = | |
2188 | (struct udphdr *)((uint8_t *)ip + | |
2189 | (ip->ihl << 2)); | |
2190 | if(ntohs(udp->dest) == 67) { | |
2191 | offset = (uint8_t *)udp + 8 - skb->data; | |
2192 | length = skb->len - offset; | |
2193 | ||
2194 | return e1000_mng_write_dhcp_info(hw, | |
2195 | (uint8_t *)udp + 8, | |
2196 | length); | |
2197 | } | |
2198 | } | |
2199 | } | |
2200 | } | |
2201 | return 0; | |
2202 | } | |
2203 | ||
1da177e4 LT |
2204 | #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
2205 | static int | |
2206 | e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
2207 | { | |
60490fe0 | 2208 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2209 | unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; |
2210 | unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; | |
2211 | unsigned int tx_flags = 0; | |
2212 | unsigned int len = skb->len; | |
2213 | unsigned long flags; | |
2214 | unsigned int nr_frags = 0; | |
2215 | unsigned int mss = 0; | |
2216 | int count = 0; | |
2217 | int tso; | |
2218 | unsigned int f; | |
2219 | len -= skb->data_len; | |
2220 | ||
2221 | if(unlikely(skb->len <= 0)) { | |
2222 | dev_kfree_skb_any(skb); | |
2223 | return NETDEV_TX_OK; | |
2224 | } | |
2225 | ||
2226 | #ifdef NETIF_F_TSO | |
2227 | mss = skb_shinfo(skb)->tso_size; | |
2648345f | 2228 | /* The controller does a simple calculation to |
1da177e4 LT |
2229 | * make sure there is enough room in the FIFO before |
2230 | * initiating the DMA for each buffer. The calc is: | |
2231 | * 4 = ceil(buffer len/mss). To make sure we don't | |
2232 | * overrun the FIFO, adjust the max buffer len if mss | |
2233 | * drops. */ | |
2234 | if(mss) { | |
2235 | max_per_txd = min(mss << 2, max_per_txd); | |
2236 | max_txd_pwr = fls(max_per_txd) - 1; | |
2237 | } | |
2238 | ||
2239 | if((mss) || (skb->ip_summed == CHECKSUM_HW)) | |
2240 | count++; | |
2648345f | 2241 | count++; |
1da177e4 LT |
2242 | #else |
2243 | if(skb->ip_summed == CHECKSUM_HW) | |
2244 | count++; | |
2245 | #endif | |
2246 | count += TXD_USE_COUNT(len, max_txd_pwr); | |
2247 | ||
2248 | if(adapter->pcix_82544) | |
2249 | count++; | |
2250 | ||
97338bde MC |
2251 | /* work-around for errata 10 and it applies to all controllers |
2252 | * in PCI-X mode, so add one more descriptor to the count | |
2253 | */ | |
2254 | if(unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && | |
2255 | (len > 2015))) | |
2256 | count++; | |
2257 | ||
1da177e4 LT |
2258 | nr_frags = skb_shinfo(skb)->nr_frags; |
2259 | for(f = 0; f < nr_frags; f++) | |
2260 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, | |
2261 | max_txd_pwr); | |
2262 | if(adapter->pcix_82544) | |
2263 | count += nr_frags; | |
2264 | ||
2265 | local_irq_save(flags); | |
2266 | if (!spin_trylock(&adapter->tx_lock)) { | |
2267 | /* Collision - tell upper layer to requeue */ | |
2268 | local_irq_restore(flags); | |
2269 | return NETDEV_TX_LOCKED; | |
2270 | } | |
2d7edb92 MC |
2271 | if(adapter->hw.tx_pkt_filtering && (adapter->hw.mac_type == e1000_82573) ) |
2272 | e1000_transfer_dhcp_info(adapter, skb); | |
2273 | ||
1da177e4 LT |
2274 | |
2275 | /* need: count + 2 desc gap to keep tail from touching | |
2276 | * head, otherwise try next time */ | |
2277 | if(unlikely(E1000_DESC_UNUSED(&adapter->tx_ring) < count + 2)) { | |
2278 | netif_stop_queue(netdev); | |
2279 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
2280 | return NETDEV_TX_BUSY; | |
2281 | } | |
2282 | ||
2283 | if(unlikely(adapter->hw.mac_type == e1000_82547)) { | |
2284 | if(unlikely(e1000_82547_fifo_workaround(adapter, skb))) { | |
2285 | netif_stop_queue(netdev); | |
2286 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies); | |
2287 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
2288 | return NETDEV_TX_BUSY; | |
2289 | } | |
2290 | } | |
2291 | ||
2292 | if(unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) { | |
2293 | tx_flags |= E1000_TX_FLAGS_VLAN; | |
2294 | tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); | |
2295 | } | |
2296 | ||
2297 | first = adapter->tx_ring.next_to_use; | |
2298 | ||
2299 | tso = e1000_tso(adapter, skb); | |
2300 | if (tso < 0) { | |
2301 | dev_kfree_skb_any(skb); | |
b2b3d824 | 2302 | spin_unlock_irqrestore(&adapter->tx_lock, flags); |
1da177e4 LT |
2303 | return NETDEV_TX_OK; |
2304 | } | |
2305 | ||
2306 | if (likely(tso)) | |
2307 | tx_flags |= E1000_TX_FLAGS_TSO; | |
2308 | else if(likely(e1000_tx_csum(adapter, skb))) | |
2309 | tx_flags |= E1000_TX_FLAGS_CSUM; | |
2310 | ||
2d7edb92 MC |
2311 | /* Old method was to assume IPv4 packet by default if TSO was enabled. |
2312 | * 82573 hardware supports TSO capabilities for IPv6 as well... | |
2313 | * no longer assume, we must. */ | |
2314 | if(likely(skb->protocol == ntohs(ETH_P_IP))) | |
2315 | tx_flags |= E1000_TX_FLAGS_IPV4; | |
2316 | ||
1da177e4 LT |
2317 | e1000_tx_queue(adapter, |
2318 | e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss), | |
2319 | tx_flags); | |
2320 | ||
2321 | netdev->trans_start = jiffies; | |
2322 | ||
2323 | /* Make sure there is space in the ring for the next send. */ | |
2324 | if(unlikely(E1000_DESC_UNUSED(&adapter->tx_ring) < MAX_SKB_FRAGS + 2)) | |
2325 | netif_stop_queue(netdev); | |
2326 | ||
2327 | spin_unlock_irqrestore(&adapter->tx_lock, flags); | |
2328 | return NETDEV_TX_OK; | |
2329 | } | |
2330 | ||
2331 | /** | |
2332 | * e1000_tx_timeout - Respond to a Tx Hang | |
2333 | * @netdev: network interface device structure | |
2334 | **/ | |
2335 | ||
2336 | static void | |
2337 | e1000_tx_timeout(struct net_device *netdev) | |
2338 | { | |
60490fe0 | 2339 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2340 | |
2341 | /* Do the reset outside of interrupt context */ | |
2342 | schedule_work(&adapter->tx_timeout_task); | |
2343 | } | |
2344 | ||
2345 | static void | |
2346 | e1000_tx_timeout_task(struct net_device *netdev) | |
2347 | { | |
60490fe0 | 2348 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2349 | |
2350 | e1000_down(adapter); | |
2351 | e1000_up(adapter); | |
2352 | } | |
2353 | ||
2354 | /** | |
2355 | * e1000_get_stats - Get System Network Statistics | |
2356 | * @netdev: network interface device structure | |
2357 | * | |
2358 | * Returns the address of the device statistics structure. | |
2359 | * The statistics are actually updated from the timer callback. | |
2360 | **/ | |
2361 | ||
2362 | static struct net_device_stats * | |
2363 | e1000_get_stats(struct net_device *netdev) | |
2364 | { | |
60490fe0 | 2365 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2366 | |
2367 | e1000_update_stats(adapter); | |
2368 | return &adapter->net_stats; | |
2369 | } | |
2370 | ||
2371 | /** | |
2372 | * e1000_change_mtu - Change the Maximum Transfer Unit | |
2373 | * @netdev: network interface device structure | |
2374 | * @new_mtu: new value for maximum frame size | |
2375 | * | |
2376 | * Returns 0 on success, negative on failure | |
2377 | **/ | |
2378 | ||
2379 | static int | |
2380 | e1000_change_mtu(struct net_device *netdev, int new_mtu) | |
2381 | { | |
60490fe0 | 2382 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2383 | int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
2384 | ||
2385 | if((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || | |
2386 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
2387 | DPRINTK(PROBE, ERR, "Invalid MTU setting\n"); | |
2388 | return -EINVAL; | |
2389 | } | |
2390 | ||
2d7edb92 MC |
2391 | #define MAX_STD_JUMBO_FRAME_SIZE 9216 |
2392 | /* might want this to be bigger enum check... */ | |
2393 | if (adapter->hw.mac_type == e1000_82573 && | |
2394 | max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) { | |
2395 | DPRINTK(PROBE, ERR, "Jumbo Frames not supported " | |
2396 | "on 82573\n"); | |
1da177e4 | 2397 | return -EINVAL; |
2d7edb92 | 2398 | } |
1da177e4 | 2399 | |
2d7edb92 MC |
2400 | if(adapter->hw.mac_type > e1000_82547_rev_2) { |
2401 | adapter->rx_buffer_len = max_frame; | |
2402 | E1000_ROUNDUP(adapter->rx_buffer_len, 1024); | |
1da177e4 | 2403 | } else { |
2d7edb92 MC |
2404 | if(unlikely((adapter->hw.mac_type < e1000_82543) && |
2405 | (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE))) { | |
2406 | DPRINTK(PROBE, ERR, "Jumbo Frames not supported " | |
2407 | "on 82542\n"); | |
2408 | return -EINVAL; | |
2409 | ||
2410 | } else { | |
2411 | if(max_frame <= E1000_RXBUFFER_2048) { | |
2412 | adapter->rx_buffer_len = E1000_RXBUFFER_2048; | |
2413 | } else if(max_frame <= E1000_RXBUFFER_4096) { | |
2414 | adapter->rx_buffer_len = E1000_RXBUFFER_4096; | |
2415 | } else if(max_frame <= E1000_RXBUFFER_8192) { | |
2416 | adapter->rx_buffer_len = E1000_RXBUFFER_8192; | |
2417 | } else if(max_frame <= E1000_RXBUFFER_16384) { | |
2418 | adapter->rx_buffer_len = E1000_RXBUFFER_16384; | |
2419 | } | |
2420 | } | |
1da177e4 LT |
2421 | } |
2422 | ||
2d7edb92 MC |
2423 | netdev->mtu = new_mtu; |
2424 | ||
2425 | if(netif_running(netdev)) { | |
1da177e4 LT |
2426 | e1000_down(adapter); |
2427 | e1000_up(adapter); | |
2428 | } | |
2429 | ||
1da177e4 LT |
2430 | adapter->hw.max_frame_size = max_frame; |
2431 | ||
2432 | return 0; | |
2433 | } | |
2434 | ||
2435 | /** | |
2436 | * e1000_update_stats - Update the board statistics counters | |
2437 | * @adapter: board private structure | |
2438 | **/ | |
2439 | ||
2440 | void | |
2441 | e1000_update_stats(struct e1000_adapter *adapter) | |
2442 | { | |
2443 | struct e1000_hw *hw = &adapter->hw; | |
2444 | unsigned long flags; | |
2445 | uint16_t phy_tmp; | |
2446 | ||
2447 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF | |
2448 | ||
2449 | spin_lock_irqsave(&adapter->stats_lock, flags); | |
2450 | ||
2451 | /* these counters are modified from e1000_adjust_tbi_stats, | |
2452 | * called from the interrupt context, so they must only | |
2453 | * be written while holding adapter->stats_lock | |
2454 | */ | |
2455 | ||
2456 | adapter->stats.crcerrs += E1000_READ_REG(hw, CRCERRS); | |
2457 | adapter->stats.gprc += E1000_READ_REG(hw, GPRC); | |
2458 | adapter->stats.gorcl += E1000_READ_REG(hw, GORCL); | |
2459 | adapter->stats.gorch += E1000_READ_REG(hw, GORCH); | |
2460 | adapter->stats.bprc += E1000_READ_REG(hw, BPRC); | |
2461 | adapter->stats.mprc += E1000_READ_REG(hw, MPRC); | |
2462 | adapter->stats.roc += E1000_READ_REG(hw, ROC); | |
2463 | adapter->stats.prc64 += E1000_READ_REG(hw, PRC64); | |
2464 | adapter->stats.prc127 += E1000_READ_REG(hw, PRC127); | |
2465 | adapter->stats.prc255 += E1000_READ_REG(hw, PRC255); | |
2466 | adapter->stats.prc511 += E1000_READ_REG(hw, PRC511); | |
2467 | adapter->stats.prc1023 += E1000_READ_REG(hw, PRC1023); | |
2468 | adapter->stats.prc1522 += E1000_READ_REG(hw, PRC1522); | |
2469 | ||
2470 | adapter->stats.symerrs += E1000_READ_REG(hw, SYMERRS); | |
2471 | adapter->stats.mpc += E1000_READ_REG(hw, MPC); | |
2472 | adapter->stats.scc += E1000_READ_REG(hw, SCC); | |
2473 | adapter->stats.ecol += E1000_READ_REG(hw, ECOL); | |
2474 | adapter->stats.mcc += E1000_READ_REG(hw, MCC); | |
2475 | adapter->stats.latecol += E1000_READ_REG(hw, LATECOL); | |
2476 | adapter->stats.dc += E1000_READ_REG(hw, DC); | |
2477 | adapter->stats.sec += E1000_READ_REG(hw, SEC); | |
2478 | adapter->stats.rlec += E1000_READ_REG(hw, RLEC); | |
2479 | adapter->stats.xonrxc += E1000_READ_REG(hw, XONRXC); | |
2480 | adapter->stats.xontxc += E1000_READ_REG(hw, XONTXC); | |
2481 | adapter->stats.xoffrxc += E1000_READ_REG(hw, XOFFRXC); | |
2482 | adapter->stats.xofftxc += E1000_READ_REG(hw, XOFFTXC); | |
2483 | adapter->stats.fcruc += E1000_READ_REG(hw, FCRUC); | |
2484 | adapter->stats.gptc += E1000_READ_REG(hw, GPTC); | |
2485 | adapter->stats.gotcl += E1000_READ_REG(hw, GOTCL); | |
2486 | adapter->stats.gotch += E1000_READ_REG(hw, GOTCH); | |
2487 | adapter->stats.rnbc += E1000_READ_REG(hw, RNBC); | |
2488 | adapter->stats.ruc += E1000_READ_REG(hw, RUC); | |
2489 | adapter->stats.rfc += E1000_READ_REG(hw, RFC); | |
2490 | adapter->stats.rjc += E1000_READ_REG(hw, RJC); | |
2491 | adapter->stats.torl += E1000_READ_REG(hw, TORL); | |
2492 | adapter->stats.torh += E1000_READ_REG(hw, TORH); | |
2493 | adapter->stats.totl += E1000_READ_REG(hw, TOTL); | |
2494 | adapter->stats.toth += E1000_READ_REG(hw, TOTH); | |
2495 | adapter->stats.tpr += E1000_READ_REG(hw, TPR); | |
2496 | adapter->stats.ptc64 += E1000_READ_REG(hw, PTC64); | |
2497 | adapter->stats.ptc127 += E1000_READ_REG(hw, PTC127); | |
2498 | adapter->stats.ptc255 += E1000_READ_REG(hw, PTC255); | |
2499 | adapter->stats.ptc511 += E1000_READ_REG(hw, PTC511); | |
2500 | adapter->stats.ptc1023 += E1000_READ_REG(hw, PTC1023); | |
2501 | adapter->stats.ptc1522 += E1000_READ_REG(hw, PTC1522); | |
2502 | adapter->stats.mptc += E1000_READ_REG(hw, MPTC); | |
2503 | adapter->stats.bptc += E1000_READ_REG(hw, BPTC); | |
2504 | ||
2505 | /* used for adaptive IFS */ | |
2506 | ||
2507 | hw->tx_packet_delta = E1000_READ_REG(hw, TPT); | |
2508 | adapter->stats.tpt += hw->tx_packet_delta; | |
2509 | hw->collision_delta = E1000_READ_REG(hw, COLC); | |
2510 | adapter->stats.colc += hw->collision_delta; | |
2511 | ||
2512 | if(hw->mac_type >= e1000_82543) { | |
2513 | adapter->stats.algnerrc += E1000_READ_REG(hw, ALGNERRC); | |
2514 | adapter->stats.rxerrc += E1000_READ_REG(hw, RXERRC); | |
2515 | adapter->stats.tncrs += E1000_READ_REG(hw, TNCRS); | |
2516 | adapter->stats.cexterr += E1000_READ_REG(hw, CEXTERR); | |
2517 | adapter->stats.tsctc += E1000_READ_REG(hw, TSCTC); | |
2518 | adapter->stats.tsctfc += E1000_READ_REG(hw, TSCTFC); | |
2519 | } | |
2d7edb92 MC |
2520 | if(hw->mac_type > e1000_82547_rev_2) { |
2521 | adapter->stats.iac += E1000_READ_REG(hw, IAC); | |
2522 | adapter->stats.icrxoc += E1000_READ_REG(hw, ICRXOC); | |
2523 | adapter->stats.icrxptc += E1000_READ_REG(hw, ICRXPTC); | |
2524 | adapter->stats.icrxatc += E1000_READ_REG(hw, ICRXATC); | |
2525 | adapter->stats.ictxptc += E1000_READ_REG(hw, ICTXPTC); | |
2526 | adapter->stats.ictxatc += E1000_READ_REG(hw, ICTXATC); | |
2527 | adapter->stats.ictxqec += E1000_READ_REG(hw, ICTXQEC); | |
2528 | adapter->stats.ictxqmtc += E1000_READ_REG(hw, ICTXQMTC); | |
2529 | adapter->stats.icrxdmtc += E1000_READ_REG(hw, ICRXDMTC); | |
2530 | } | |
1da177e4 LT |
2531 | |
2532 | /* Fill out the OS statistics structure */ | |
2533 | ||
2534 | adapter->net_stats.rx_packets = adapter->stats.gprc; | |
2535 | adapter->net_stats.tx_packets = adapter->stats.gptc; | |
2536 | adapter->net_stats.rx_bytes = adapter->stats.gorcl; | |
2537 | adapter->net_stats.tx_bytes = adapter->stats.gotcl; | |
2538 | adapter->net_stats.multicast = adapter->stats.mprc; | |
2539 | adapter->net_stats.collisions = adapter->stats.colc; | |
2540 | ||
2541 | /* Rx Errors */ | |
2542 | ||
2543 | adapter->net_stats.rx_errors = adapter->stats.rxerrc + | |
2544 | adapter->stats.crcerrs + adapter->stats.algnerrc + | |
6d915757 MC |
2545 | adapter->stats.rlec + adapter->stats.mpc + |
2546 | adapter->stats.cexterr; | |
2547 | adapter->net_stats.rx_dropped = adapter->stats.mpc; | |
1da177e4 LT |
2548 | adapter->net_stats.rx_length_errors = adapter->stats.rlec; |
2549 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; | |
2550 | adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; | |
2551 | adapter->net_stats.rx_fifo_errors = adapter->stats.mpc; | |
2552 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; | |
2553 | ||
2554 | /* Tx Errors */ | |
2555 | ||
2556 | adapter->net_stats.tx_errors = adapter->stats.ecol + | |
2557 | adapter->stats.latecol; | |
2558 | adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; | |
2559 | adapter->net_stats.tx_window_errors = adapter->stats.latecol; | |
2560 | adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; | |
2561 | ||
2562 | /* Tx Dropped needs to be maintained elsewhere */ | |
2563 | ||
2564 | /* Phy Stats */ | |
2565 | ||
2566 | if(hw->media_type == e1000_media_type_copper) { | |
2567 | if((adapter->link_speed == SPEED_1000) && | |
2568 | (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { | |
2569 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; | |
2570 | adapter->phy_stats.idle_errors += phy_tmp; | |
2571 | } | |
2572 | ||
2573 | if((hw->mac_type <= e1000_82546) && | |
2574 | (hw->phy_type == e1000_phy_m88) && | |
2575 | !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) | |
2576 | adapter->phy_stats.receive_errors += phy_tmp; | |
2577 | } | |
2578 | ||
2579 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
2580 | } | |
2581 | ||
2582 | /** | |
2583 | * e1000_intr - Interrupt Handler | |
2584 | * @irq: interrupt number | |
2585 | * @data: pointer to a network interface device structure | |
2586 | * @pt_regs: CPU registers structure | |
2587 | **/ | |
2588 | ||
2589 | static irqreturn_t | |
2590 | e1000_intr(int irq, void *data, struct pt_regs *regs) | |
2591 | { | |
2592 | struct net_device *netdev = data; | |
60490fe0 | 2593 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2594 | struct e1000_hw *hw = &adapter->hw; |
2595 | uint32_t icr = E1000_READ_REG(hw, ICR); | |
2596 | #ifndef CONFIG_E1000_NAPI | |
2597 | unsigned int i; | |
2598 | #endif | |
2599 | ||
2600 | if(unlikely(!icr)) | |
2601 | return IRQ_NONE; /* Not our interrupt */ | |
2602 | ||
2603 | if(unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { | |
2604 | hw->get_link_status = 1; | |
2605 | mod_timer(&adapter->watchdog_timer, jiffies); | |
2606 | } | |
2607 | ||
2608 | #ifdef CONFIG_E1000_NAPI | |
2609 | if(likely(netif_rx_schedule_prep(netdev))) { | |
2610 | ||
2611 | /* Disable interrupts and register for poll. The flush | |
2612 | of the posted write is intentionally left out. | |
2613 | */ | |
2614 | ||
2615 | atomic_inc(&adapter->irq_sem); | |
2616 | E1000_WRITE_REG(hw, IMC, ~0); | |
2617 | __netif_rx_schedule(netdev); | |
2618 | } | |
2619 | #else | |
2620 | /* Writing IMC and IMS is needed for 82547. | |
2621 | Due to Hub Link bus being occupied, an interrupt | |
2622 | de-assertion message is not able to be sent. | |
2623 | When an interrupt assertion message is generated later, | |
2624 | two messages are re-ordered and sent out. | |
2625 | That causes APIC to think 82547 is in de-assertion | |
2626 | state, while 82547 is in assertion state, resulting | |
2627 | in dead lock. Writing IMC forces 82547 into | |
2628 | de-assertion state. | |
2629 | */ | |
2630 | if(hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2){ | |
2631 | atomic_inc(&adapter->irq_sem); | |
2648345f | 2632 | E1000_WRITE_REG(hw, IMC, ~0); |
1da177e4 LT |
2633 | } |
2634 | ||
2635 | for(i = 0; i < E1000_MAX_INTR; i++) | |
2d7edb92 | 2636 | if(unlikely(!adapter->clean_rx(adapter) & |
1da177e4 LT |
2637 | !e1000_clean_tx_irq(adapter))) |
2638 | break; | |
2639 | ||
2640 | if(hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) | |
2641 | e1000_irq_enable(adapter); | |
2642 | #endif | |
2643 | ||
2644 | return IRQ_HANDLED; | |
2645 | } | |
2646 | ||
2647 | #ifdef CONFIG_E1000_NAPI | |
2648 | /** | |
2649 | * e1000_clean - NAPI Rx polling callback | |
2650 | * @adapter: board private structure | |
2651 | **/ | |
2652 | ||
2653 | static int | |
2654 | e1000_clean(struct net_device *netdev, int *budget) | |
2655 | { | |
60490fe0 | 2656 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2657 | int work_to_do = min(*budget, netdev->quota); |
2658 | int tx_cleaned; | |
2659 | int work_done = 0; | |
2648345f | 2660 | |
1da177e4 | 2661 | tx_cleaned = e1000_clean_tx_irq(adapter); |
2d7edb92 | 2662 | adapter->clean_rx(adapter, &work_done, work_to_do); |
1da177e4 LT |
2663 | |
2664 | *budget -= work_done; | |
2665 | netdev->quota -= work_done; | |
2666 | ||
f0d11ed0 | 2667 | if ((!tx_cleaned && (work_done == 0)) || !netif_running(netdev)) { |
2b02893e | 2668 | /* If no Tx and not enough Rx work done, exit the polling mode */ |
1da177e4 LT |
2669 | netif_rx_complete(netdev); |
2670 | e1000_irq_enable(adapter); | |
2671 | return 0; | |
2672 | } | |
2673 | ||
2674 | return 1; | |
2675 | } | |
2676 | ||
2677 | #endif | |
2678 | /** | |
2679 | * e1000_clean_tx_irq - Reclaim resources after transmit completes | |
2680 | * @adapter: board private structure | |
2681 | **/ | |
2682 | ||
2683 | static boolean_t | |
2684 | e1000_clean_tx_irq(struct e1000_adapter *adapter) | |
2685 | { | |
2686 | struct e1000_desc_ring *tx_ring = &adapter->tx_ring; | |
2687 | struct net_device *netdev = adapter->netdev; | |
2688 | struct e1000_tx_desc *tx_desc, *eop_desc; | |
2689 | struct e1000_buffer *buffer_info; | |
2690 | unsigned int i, eop; | |
2691 | boolean_t cleaned = FALSE; | |
2692 | ||
2693 | i = tx_ring->next_to_clean; | |
2694 | eop = tx_ring->buffer_info[i].next_to_watch; | |
2695 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
2696 | ||
2697 | while(eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) { | |
2701234f MC |
2698 | /* Premature writeback of Tx descriptors clear (free buffers |
2699 | * and unmap pci_mapping) previous_buffer_info */ | |
1da177e4 | 2700 | if (likely(adapter->previous_buffer_info.skb != NULL)) { |
2701234f | 2701 | e1000_unmap_and_free_tx_resource(adapter, |
1da177e4 LT |
2702 | &adapter->previous_buffer_info); |
2703 | } | |
2704 | ||
2705 | for(cleaned = FALSE; !cleaned; ) { | |
2706 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
2707 | buffer_info = &tx_ring->buffer_info[i]; | |
2708 | cleaned = (i == eop); | |
2709 | ||
2701234f MC |
2710 | #ifdef NETIF_F_TSO |
2711 | if (!(netdev->features & NETIF_F_TSO)) { | |
2712 | #endif | |
2713 | e1000_unmap_and_free_tx_resource(adapter, | |
2714 | buffer_info); | |
2715 | #ifdef NETIF_F_TSO | |
1da177e4 | 2716 | } else { |
2701234f MC |
2717 | if (cleaned) { |
2718 | memcpy(&adapter->previous_buffer_info, | |
2719 | buffer_info, | |
2720 | sizeof(struct e1000_buffer)); | |
2721 | memset(buffer_info, 0, | |
2722 | sizeof(struct e1000_buffer)); | |
2723 | } else { | |
2724 | e1000_unmap_and_free_tx_resource( | |
2725 | adapter, buffer_info); | |
2726 | } | |
1da177e4 | 2727 | } |
2701234f | 2728 | #endif |
1da177e4 LT |
2729 | |
2730 | tx_desc->buffer_addr = 0; | |
2731 | tx_desc->lower.data = 0; | |
2732 | tx_desc->upper.data = 0; | |
2733 | ||
1da177e4 LT |
2734 | if(unlikely(++i == tx_ring->count)) i = 0; |
2735 | } | |
2736 | ||
2737 | eop = tx_ring->buffer_info[i].next_to_watch; | |
2738 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
2739 | } | |
2740 | ||
2741 | tx_ring->next_to_clean = i; | |
2742 | ||
2743 | spin_lock(&adapter->tx_lock); | |
2744 | ||
2745 | if(unlikely(cleaned && netif_queue_stopped(netdev) && | |
2746 | netif_carrier_ok(netdev))) | |
2747 | netif_wake_queue(netdev); | |
2748 | ||
2749 | spin_unlock(&adapter->tx_lock); | |
1da177e4 | 2750 | if(adapter->detect_tx_hung) { |
2648345f MC |
2751 | |
2752 | /* Detect a transmit hang in hardware, this serializes the | |
1da177e4 LT |
2753 | * check with the clearing of time_stamp and movement of i */ |
2754 | adapter->detect_tx_hung = FALSE; | |
70b8f1e1 MC |
2755 | if (tx_ring->buffer_info[i].dma && |
2756 | time_after(jiffies, tx_ring->buffer_info[i].time_stamp + HZ) | |
2757 | && !(E1000_READ_REG(&adapter->hw, STATUS) & | |
2758 | E1000_STATUS_TXOFF)) { | |
2759 | ||
2760 | /* detected Tx unit hang */ | |
2761 | i = tx_ring->next_to_clean; | |
2762 | eop = tx_ring->buffer_info[i].next_to_watch; | |
2763 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
c6963ef5 | 2764 | DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" |
70b8f1e1 MC |
2765 | " TDH <%x>\n" |
2766 | " TDT <%x>\n" | |
2767 | " next_to_use <%x>\n" | |
2768 | " next_to_clean <%x>\n" | |
2769 | "buffer_info[next_to_clean]\n" | |
c6963ef5 | 2770 | " dma <%zx>\n" |
70b8f1e1 MC |
2771 | " time_stamp <%lx>\n" |
2772 | " next_to_watch <%x>\n" | |
2773 | " jiffies <%lx>\n" | |
2774 | " next_to_watch.status <%x>\n", | |
2775 | E1000_READ_REG(&adapter->hw, TDH), | |
2776 | E1000_READ_REG(&adapter->hw, TDT), | |
2777 | tx_ring->next_to_use, | |
2778 | i, | |
2779 | tx_ring->buffer_info[i].dma, | |
2780 | tx_ring->buffer_info[i].time_stamp, | |
2781 | eop, | |
2782 | jiffies, | |
2783 | eop_desc->upper.fields.status); | |
1da177e4 | 2784 | netif_stop_queue(netdev); |
70b8f1e1 | 2785 | } |
1da177e4 | 2786 | } |
2701234f MC |
2787 | #ifdef NETIF_F_TSO |
2788 | ||
2789 | if( unlikely(!(eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && | |
2790 | time_after(jiffies, adapter->previous_buffer_info.time_stamp + HZ))) | |
2791 | e1000_unmap_and_free_tx_resource( | |
2792 | adapter, &adapter->previous_buffer_info); | |
1da177e4 | 2793 | |
2701234f | 2794 | #endif |
1da177e4 LT |
2795 | return cleaned; |
2796 | } | |
2797 | ||
2798 | /** | |
2799 | * e1000_rx_checksum - Receive Checksum Offload for 82543 | |
2d7edb92 MC |
2800 | * @adapter: board private structure |
2801 | * @status_err: receive descriptor status and error fields | |
2802 | * @csum: receive descriptor csum field | |
2803 | * @sk_buff: socket buffer with received data | |
1da177e4 LT |
2804 | **/ |
2805 | ||
2806 | static inline void | |
2807 | e1000_rx_checksum(struct e1000_adapter *adapter, | |
2d7edb92 MC |
2808 | uint32_t status_err, uint32_t csum, |
2809 | struct sk_buff *skb) | |
1da177e4 | 2810 | { |
2d7edb92 MC |
2811 | uint16_t status = (uint16_t)status_err; |
2812 | uint8_t errors = (uint8_t)(status_err >> 24); | |
2813 | skb->ip_summed = CHECKSUM_NONE; | |
2814 | ||
1da177e4 | 2815 | /* 82543 or newer only */ |
2d7edb92 | 2816 | if(unlikely(adapter->hw.mac_type < e1000_82543)) return; |
1da177e4 | 2817 | /* Ignore Checksum bit is set */ |
2d7edb92 MC |
2818 | if(unlikely(status & E1000_RXD_STAT_IXSM)) return; |
2819 | /* TCP/UDP checksum error bit is set */ | |
2820 | if(unlikely(errors & E1000_RXD_ERR_TCPE)) { | |
1da177e4 | 2821 | /* let the stack verify checksum errors */ |
1da177e4 | 2822 | adapter->hw_csum_err++; |
2d7edb92 MC |
2823 | return; |
2824 | } | |
2825 | /* TCP/UDP Checksum has not been calculated */ | |
2826 | if(adapter->hw.mac_type <= e1000_82547_rev_2) { | |
2827 | if(!(status & E1000_RXD_STAT_TCPCS)) | |
2828 | return; | |
1da177e4 | 2829 | } else { |
2d7edb92 MC |
2830 | if(!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) |
2831 | return; | |
2832 | } | |
2833 | /* It must be a TCP or UDP packet with a valid checksum */ | |
2834 | if (likely(status & E1000_RXD_STAT_TCPCS)) { | |
1da177e4 LT |
2835 | /* TCP checksum is good */ |
2836 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
2d7edb92 MC |
2837 | } else if (adapter->hw.mac_type > e1000_82547_rev_2) { |
2838 | /* IP fragment with UDP payload */ | |
2839 | /* Hardware complements the payload checksum, so we undo it | |
2840 | * and then put the value in host order for further stack use. | |
2841 | */ | |
2842 | csum = ntohl(csum ^ 0xFFFF); | |
2843 | skb->csum = csum; | |
2844 | skb->ip_summed = CHECKSUM_HW; | |
1da177e4 | 2845 | } |
2d7edb92 | 2846 | adapter->hw_csum_good++; |
1da177e4 LT |
2847 | } |
2848 | ||
2849 | /** | |
2d7edb92 | 2850 | * e1000_clean_rx_irq - Send received data up the network stack; legacy |
1da177e4 LT |
2851 | * @adapter: board private structure |
2852 | **/ | |
2853 | ||
2854 | static boolean_t | |
2855 | #ifdef CONFIG_E1000_NAPI | |
2856 | e1000_clean_rx_irq(struct e1000_adapter *adapter, int *work_done, | |
2857 | int work_to_do) | |
2858 | #else | |
2859 | e1000_clean_rx_irq(struct e1000_adapter *adapter) | |
2860 | #endif | |
2861 | { | |
2862 | struct e1000_desc_ring *rx_ring = &adapter->rx_ring; | |
2863 | struct net_device *netdev = adapter->netdev; | |
2864 | struct pci_dev *pdev = adapter->pdev; | |
2865 | struct e1000_rx_desc *rx_desc; | |
2866 | struct e1000_buffer *buffer_info; | |
2867 | struct sk_buff *skb; | |
2868 | unsigned long flags; | |
2869 | uint32_t length; | |
2870 | uint8_t last_byte; | |
2871 | unsigned int i; | |
2872 | boolean_t cleaned = FALSE; | |
2873 | ||
2874 | i = rx_ring->next_to_clean; | |
2875 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
2876 | ||
2877 | while(rx_desc->status & E1000_RXD_STAT_DD) { | |
2878 | buffer_info = &rx_ring->buffer_info[i]; | |
2879 | #ifdef CONFIG_E1000_NAPI | |
2880 | if(*work_done >= work_to_do) | |
2881 | break; | |
2882 | (*work_done)++; | |
2883 | #endif | |
2884 | cleaned = TRUE; | |
2885 | ||
2886 | pci_unmap_single(pdev, | |
2887 | buffer_info->dma, | |
2888 | buffer_info->length, | |
2889 | PCI_DMA_FROMDEVICE); | |
2890 | ||
2891 | skb = buffer_info->skb; | |
2892 | length = le16_to_cpu(rx_desc->length); | |
2893 | ||
2894 | if(unlikely(!(rx_desc->status & E1000_RXD_STAT_EOP))) { | |
2895 | /* All receives must fit into a single buffer */ | |
2896 | E1000_DBG("%s: Receive packet consumed multiple" | |
2648345f | 2897 | " buffers\n", netdev->name); |
1da177e4 LT |
2898 | dev_kfree_skb_irq(skb); |
2899 | goto next_desc; | |
2900 | } | |
2901 | ||
2902 | if(unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { | |
2903 | last_byte = *(skb->data + length - 1); | |
2904 | if(TBI_ACCEPT(&adapter->hw, rx_desc->status, | |
2905 | rx_desc->errors, length, last_byte)) { | |
2906 | spin_lock_irqsave(&adapter->stats_lock, flags); | |
2907 | e1000_tbi_adjust_stats(&adapter->hw, | |
2908 | &adapter->stats, | |
2909 | length, skb->data); | |
2910 | spin_unlock_irqrestore(&adapter->stats_lock, | |
2911 | flags); | |
2912 | length--; | |
2913 | } else { | |
2914 | dev_kfree_skb_irq(skb); | |
2915 | goto next_desc; | |
2916 | } | |
2917 | } | |
2918 | ||
2919 | /* Good Receive */ | |
2920 | skb_put(skb, length - ETHERNET_FCS_SIZE); | |
2921 | ||
2922 | /* Receive Checksum Offload */ | |
2d7edb92 MC |
2923 | e1000_rx_checksum(adapter, |
2924 | (uint32_t)(rx_desc->status) | | |
2925 | ((uint32_t)(rx_desc->errors) << 24), | |
2926 | rx_desc->csum, skb); | |
1da177e4 LT |
2927 | skb->protocol = eth_type_trans(skb, netdev); |
2928 | #ifdef CONFIG_E1000_NAPI | |
2929 | if(unlikely(adapter->vlgrp && | |
2930 | (rx_desc->status & E1000_RXD_STAT_VP))) { | |
2931 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, | |
2d7edb92 MC |
2932 | le16_to_cpu(rx_desc->special) & |
2933 | E1000_RXD_SPC_VLAN_MASK); | |
1da177e4 LT |
2934 | } else { |
2935 | netif_receive_skb(skb); | |
2936 | } | |
2937 | #else /* CONFIG_E1000_NAPI */ | |
2938 | if(unlikely(adapter->vlgrp && | |
2939 | (rx_desc->status & E1000_RXD_STAT_VP))) { | |
2940 | vlan_hwaccel_rx(skb, adapter->vlgrp, | |
2941 | le16_to_cpu(rx_desc->special) & | |
2942 | E1000_RXD_SPC_VLAN_MASK); | |
2943 | } else { | |
2944 | netif_rx(skb); | |
2945 | } | |
2946 | #endif /* CONFIG_E1000_NAPI */ | |
2947 | netdev->last_rx = jiffies; | |
2948 | ||
2949 | next_desc: | |
2950 | rx_desc->status = 0; | |
2951 | buffer_info->skb = NULL; | |
2952 | if(unlikely(++i == rx_ring->count)) i = 0; | |
2953 | ||
2954 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
2955 | } | |
1da177e4 | 2956 | rx_ring->next_to_clean = i; |
2d7edb92 MC |
2957 | adapter->alloc_rx_buf(adapter); |
2958 | ||
2959 | return cleaned; | |
2960 | } | |
2961 | ||
2962 | /** | |
2963 | * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split | |
2964 | * @adapter: board private structure | |
2965 | **/ | |
2966 | ||
2967 | static boolean_t | |
2968 | #ifdef CONFIG_E1000_NAPI | |
2969 | e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, int *work_done, | |
2970 | int work_to_do) | |
2971 | #else | |
2972 | e1000_clean_rx_irq_ps(struct e1000_adapter *adapter) | |
2973 | #endif | |
2974 | { | |
2975 | struct e1000_desc_ring *rx_ring = &adapter->rx_ring; | |
2976 | union e1000_rx_desc_packet_split *rx_desc; | |
2977 | struct net_device *netdev = adapter->netdev; | |
2978 | struct pci_dev *pdev = adapter->pdev; | |
2979 | struct e1000_buffer *buffer_info; | |
2980 | struct e1000_ps_page *ps_page; | |
2981 | struct e1000_ps_page_dma *ps_page_dma; | |
2982 | struct sk_buff *skb; | |
2983 | unsigned int i, j; | |
2984 | uint32_t length, staterr; | |
2985 | boolean_t cleaned = FALSE; | |
2986 | ||
2987 | i = rx_ring->next_to_clean; | |
2988 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
683a38f3 | 2989 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
2d7edb92 MC |
2990 | |
2991 | while(staterr & E1000_RXD_STAT_DD) { | |
2992 | buffer_info = &rx_ring->buffer_info[i]; | |
2993 | ps_page = &rx_ring->ps_page[i]; | |
2994 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
2995 | #ifdef CONFIG_E1000_NAPI | |
2996 | if(unlikely(*work_done >= work_to_do)) | |
2997 | break; | |
2998 | (*work_done)++; | |
2999 | #endif | |
3000 | cleaned = TRUE; | |
3001 | pci_unmap_single(pdev, buffer_info->dma, | |
3002 | buffer_info->length, | |
3003 | PCI_DMA_FROMDEVICE); | |
3004 | ||
3005 | skb = buffer_info->skb; | |
3006 | ||
3007 | if(unlikely(!(staterr & E1000_RXD_STAT_EOP))) { | |
3008 | E1000_DBG("%s: Packet Split buffers didn't pick up" | |
3009 | " the full packet\n", netdev->name); | |
3010 | dev_kfree_skb_irq(skb); | |
3011 | goto next_desc; | |
3012 | } | |
1da177e4 | 3013 | |
2d7edb92 MC |
3014 | if(unlikely(staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK)) { |
3015 | dev_kfree_skb_irq(skb); | |
3016 | goto next_desc; | |
3017 | } | |
3018 | ||
3019 | length = le16_to_cpu(rx_desc->wb.middle.length0); | |
3020 | ||
3021 | if(unlikely(!length)) { | |
3022 | E1000_DBG("%s: Last part of the packet spanning" | |
3023 | " multiple descriptors\n", netdev->name); | |
3024 | dev_kfree_skb_irq(skb); | |
3025 | goto next_desc; | |
3026 | } | |
3027 | ||
3028 | /* Good Receive */ | |
3029 | skb_put(skb, length); | |
3030 | ||
3031 | for(j = 0; j < PS_PAGE_BUFFERS; j++) { | |
3032 | if(!(length = le16_to_cpu(rx_desc->wb.upper.length[j]))) | |
3033 | break; | |
3034 | ||
3035 | pci_unmap_page(pdev, ps_page_dma->ps_page_dma[j], | |
3036 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
3037 | ps_page_dma->ps_page_dma[j] = 0; | |
3038 | skb_shinfo(skb)->frags[j].page = | |
3039 | ps_page->ps_page[j]; | |
3040 | ps_page->ps_page[j] = NULL; | |
3041 | skb_shinfo(skb)->frags[j].page_offset = 0; | |
3042 | skb_shinfo(skb)->frags[j].size = length; | |
3043 | skb_shinfo(skb)->nr_frags++; | |
3044 | skb->len += length; | |
3045 | skb->data_len += length; | |
3046 | } | |
3047 | ||
3048 | e1000_rx_checksum(adapter, staterr, | |
3049 | rx_desc->wb.lower.hi_dword.csum_ip.csum, skb); | |
3050 | skb->protocol = eth_type_trans(skb, netdev); | |
3051 | ||
3052 | #ifdef HAVE_RX_ZERO_COPY | |
3053 | if(likely(rx_desc->wb.upper.header_status & | |
3054 | E1000_RXDPS_HDRSTAT_HDRSP)) | |
3055 | skb_shinfo(skb)->zero_copy = TRUE; | |
3056 | #endif | |
3057 | #ifdef CONFIG_E1000_NAPI | |
3058 | if(unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) { | |
3059 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, | |
683a38f3 MC |
3060 | le16_to_cpu(rx_desc->wb.middle.vlan) & |
3061 | E1000_RXD_SPC_VLAN_MASK); | |
2d7edb92 MC |
3062 | } else { |
3063 | netif_receive_skb(skb); | |
3064 | } | |
3065 | #else /* CONFIG_E1000_NAPI */ | |
3066 | if(unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) { | |
3067 | vlan_hwaccel_rx(skb, adapter->vlgrp, | |
683a38f3 MC |
3068 | le16_to_cpu(rx_desc->wb.middle.vlan) & |
3069 | E1000_RXD_SPC_VLAN_MASK); | |
2d7edb92 MC |
3070 | } else { |
3071 | netif_rx(skb); | |
3072 | } | |
3073 | #endif /* CONFIG_E1000_NAPI */ | |
3074 | netdev->last_rx = jiffies; | |
3075 | ||
3076 | next_desc: | |
3077 | rx_desc->wb.middle.status_error &= ~0xFF; | |
3078 | buffer_info->skb = NULL; | |
3079 | if(unlikely(++i == rx_ring->count)) i = 0; | |
3080 | ||
3081 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
683a38f3 | 3082 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
2d7edb92 MC |
3083 | } |
3084 | rx_ring->next_to_clean = i; | |
3085 | adapter->alloc_rx_buf(adapter); | |
1da177e4 LT |
3086 | |
3087 | return cleaned; | |
3088 | } | |
3089 | ||
3090 | /** | |
2d7edb92 | 3091 | * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
1da177e4 LT |
3092 | * @adapter: address of board private structure |
3093 | **/ | |
3094 | ||
3095 | static void | |
3096 | e1000_alloc_rx_buffers(struct e1000_adapter *adapter) | |
3097 | { | |
3098 | struct e1000_desc_ring *rx_ring = &adapter->rx_ring; | |
3099 | struct net_device *netdev = adapter->netdev; | |
3100 | struct pci_dev *pdev = adapter->pdev; | |
3101 | struct e1000_rx_desc *rx_desc; | |
3102 | struct e1000_buffer *buffer_info; | |
3103 | struct sk_buff *skb; | |
2648345f MC |
3104 | unsigned int i; |
3105 | unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN; | |
1da177e4 LT |
3106 | |
3107 | i = rx_ring->next_to_use; | |
3108 | buffer_info = &rx_ring->buffer_info[i]; | |
3109 | ||
3110 | while(!buffer_info->skb) { | |
1da177e4 | 3111 | skb = dev_alloc_skb(bufsz); |
2648345f | 3112 | |
1da177e4 LT |
3113 | if(unlikely(!skb)) { |
3114 | /* Better luck next round */ | |
3115 | break; | |
3116 | } | |
3117 | ||
2648345f | 3118 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
3119 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
3120 | struct sk_buff *oldskb = skb; | |
2648345f MC |
3121 | DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes " |
3122 | "at %p\n", bufsz, skb->data); | |
3123 | /* Try again, without freeing the previous */ | |
1da177e4 | 3124 | skb = dev_alloc_skb(bufsz); |
2648345f | 3125 | /* Failed allocation, critical failure */ |
1da177e4 LT |
3126 | if (!skb) { |
3127 | dev_kfree_skb(oldskb); | |
3128 | break; | |
3129 | } | |
2648345f | 3130 | |
1da177e4 LT |
3131 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
3132 | /* give up */ | |
3133 | dev_kfree_skb(skb); | |
3134 | dev_kfree_skb(oldskb); | |
3135 | break; /* while !buffer_info->skb */ | |
3136 | } else { | |
2648345f | 3137 | /* Use new allocation */ |
1da177e4 LT |
3138 | dev_kfree_skb(oldskb); |
3139 | } | |
3140 | } | |
1da177e4 LT |
3141 | /* Make buffer alignment 2 beyond a 16 byte boundary |
3142 | * this will result in a 16 byte aligned IP header after | |
3143 | * the 14 byte MAC header is removed | |
3144 | */ | |
3145 | skb_reserve(skb, NET_IP_ALIGN); | |
3146 | ||
3147 | skb->dev = netdev; | |
3148 | ||
3149 | buffer_info->skb = skb; | |
3150 | buffer_info->length = adapter->rx_buffer_len; | |
3151 | buffer_info->dma = pci_map_single(pdev, | |
3152 | skb->data, | |
3153 | adapter->rx_buffer_len, | |
3154 | PCI_DMA_FROMDEVICE); | |
3155 | ||
2648345f MC |
3156 | /* Fix for errata 23, can't cross 64kB boundary */ |
3157 | if (!e1000_check_64k_bound(adapter, | |
3158 | (void *)(unsigned long)buffer_info->dma, | |
3159 | adapter->rx_buffer_len)) { | |
3160 | DPRINTK(RX_ERR, ERR, | |
3161 | "dma align check failed: %u bytes at %p\n", | |
3162 | adapter->rx_buffer_len, | |
3163 | (void *)(unsigned long)buffer_info->dma); | |
1da177e4 LT |
3164 | dev_kfree_skb(skb); |
3165 | buffer_info->skb = NULL; | |
3166 | ||
2648345f | 3167 | pci_unmap_single(pdev, buffer_info->dma, |
1da177e4 LT |
3168 | adapter->rx_buffer_len, |
3169 | PCI_DMA_FROMDEVICE); | |
3170 | ||
3171 | break; /* while !buffer_info->skb */ | |
3172 | } | |
1da177e4 LT |
3173 | rx_desc = E1000_RX_DESC(*rx_ring, i); |
3174 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
3175 | ||
3176 | if(unlikely((i & ~(E1000_RX_BUFFER_WRITE - 1)) == i)) { | |
3177 | /* Force memory writes to complete before letting h/w | |
3178 | * know there are new descriptors to fetch. (Only | |
3179 | * applicable for weak-ordered memory model archs, | |
3180 | * such as IA-64). */ | |
3181 | wmb(); | |
1da177e4 LT |
3182 | E1000_WRITE_REG(&adapter->hw, RDT, i); |
3183 | } | |
3184 | ||
3185 | if(unlikely(++i == rx_ring->count)) i = 0; | |
3186 | buffer_info = &rx_ring->buffer_info[i]; | |
3187 | } | |
3188 | ||
3189 | rx_ring->next_to_use = i; | |
3190 | } | |
3191 | ||
2d7edb92 MC |
3192 | /** |
3193 | * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split | |
3194 | * @adapter: address of board private structure | |
3195 | **/ | |
3196 | ||
3197 | static void | |
3198 | e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter) | |
3199 | { | |
3200 | struct e1000_desc_ring *rx_ring = &adapter->rx_ring; | |
3201 | struct net_device *netdev = adapter->netdev; | |
3202 | struct pci_dev *pdev = adapter->pdev; | |
3203 | union e1000_rx_desc_packet_split *rx_desc; | |
3204 | struct e1000_buffer *buffer_info; | |
3205 | struct e1000_ps_page *ps_page; | |
3206 | struct e1000_ps_page_dma *ps_page_dma; | |
3207 | struct sk_buff *skb; | |
3208 | unsigned int i, j; | |
3209 | ||
3210 | i = rx_ring->next_to_use; | |
3211 | buffer_info = &rx_ring->buffer_info[i]; | |
3212 | ps_page = &rx_ring->ps_page[i]; | |
3213 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
3214 | ||
3215 | while(!buffer_info->skb) { | |
3216 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
3217 | ||
3218 | for(j = 0; j < PS_PAGE_BUFFERS; j++) { | |
3219 | if(unlikely(!ps_page->ps_page[j])) { | |
3220 | ps_page->ps_page[j] = | |
3221 | alloc_page(GFP_ATOMIC); | |
3222 | if(unlikely(!ps_page->ps_page[j])) | |
3223 | goto no_buffers; | |
3224 | ps_page_dma->ps_page_dma[j] = | |
3225 | pci_map_page(pdev, | |
3226 | ps_page->ps_page[j], | |
3227 | 0, PAGE_SIZE, | |
3228 | PCI_DMA_FROMDEVICE); | |
3229 | } | |
3230 | /* Refresh the desc even if buffer_addrs didn't | |
3231 | * change because each write-back erases this info. | |
3232 | */ | |
3233 | rx_desc->read.buffer_addr[j+1] = | |
3234 | cpu_to_le64(ps_page_dma->ps_page_dma[j]); | |
3235 | } | |
3236 | ||
3237 | skb = dev_alloc_skb(adapter->rx_ps_bsize0 + NET_IP_ALIGN); | |
3238 | ||
3239 | if(unlikely(!skb)) | |
3240 | break; | |
3241 | ||
3242 | /* Make buffer alignment 2 beyond a 16 byte boundary | |
3243 | * this will result in a 16 byte aligned IP header after | |
3244 | * the 14 byte MAC header is removed | |
3245 | */ | |
3246 | skb_reserve(skb, NET_IP_ALIGN); | |
3247 | ||
3248 | skb->dev = netdev; | |
3249 | ||
3250 | buffer_info->skb = skb; | |
3251 | buffer_info->length = adapter->rx_ps_bsize0; | |
3252 | buffer_info->dma = pci_map_single(pdev, skb->data, | |
3253 | adapter->rx_ps_bsize0, | |
3254 | PCI_DMA_FROMDEVICE); | |
3255 | ||
3256 | rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); | |
3257 | ||
3258 | if(unlikely((i & ~(E1000_RX_BUFFER_WRITE - 1)) == i)) { | |
3259 | /* Force memory writes to complete before letting h/w | |
3260 | * know there are new descriptors to fetch. (Only | |
3261 | * applicable for weak-ordered memory model archs, | |
3262 | * such as IA-64). */ | |
3263 | wmb(); | |
3264 | /* Hardware increments by 16 bytes, but packet split | |
3265 | * descriptors are 32 bytes...so we increment tail | |
3266 | * twice as much. | |
3267 | */ | |
3268 | E1000_WRITE_REG(&adapter->hw, RDT, i<<1); | |
3269 | } | |
3270 | ||
3271 | if(unlikely(++i == rx_ring->count)) i = 0; | |
3272 | buffer_info = &rx_ring->buffer_info[i]; | |
3273 | ps_page = &rx_ring->ps_page[i]; | |
3274 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
3275 | } | |
3276 | ||
3277 | no_buffers: | |
3278 | rx_ring->next_to_use = i; | |
3279 | } | |
3280 | ||
1da177e4 LT |
3281 | /** |
3282 | * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. | |
3283 | * @adapter: | |
3284 | **/ | |
3285 | ||
3286 | static void | |
3287 | e1000_smartspeed(struct e1000_adapter *adapter) | |
3288 | { | |
3289 | uint16_t phy_status; | |
3290 | uint16_t phy_ctrl; | |
3291 | ||
3292 | if((adapter->hw.phy_type != e1000_phy_igp) || !adapter->hw.autoneg || | |
3293 | !(adapter->hw.autoneg_advertised & ADVERTISE_1000_FULL)) | |
3294 | return; | |
3295 | ||
3296 | if(adapter->smartspeed == 0) { | |
3297 | /* If Master/Slave config fault is asserted twice, | |
3298 | * we assume back-to-back */ | |
3299 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); | |
3300 | if(!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; | |
3301 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); | |
3302 | if(!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; | |
3303 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); | |
3304 | if(phy_ctrl & CR_1000T_MS_ENABLE) { | |
3305 | phy_ctrl &= ~CR_1000T_MS_ENABLE; | |
3306 | e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, | |
3307 | phy_ctrl); | |
3308 | adapter->smartspeed++; | |
3309 | if(!e1000_phy_setup_autoneg(&adapter->hw) && | |
3310 | !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, | |
3311 | &phy_ctrl)) { | |
3312 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
3313 | MII_CR_RESTART_AUTO_NEG); | |
3314 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, | |
3315 | phy_ctrl); | |
3316 | } | |
3317 | } | |
3318 | return; | |
3319 | } else if(adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { | |
3320 | /* If still no link, perhaps using 2/3 pair cable */ | |
3321 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); | |
3322 | phy_ctrl |= CR_1000T_MS_ENABLE; | |
3323 | e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_ctrl); | |
3324 | if(!e1000_phy_setup_autoneg(&adapter->hw) && | |
3325 | !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_ctrl)) { | |
3326 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
3327 | MII_CR_RESTART_AUTO_NEG); | |
3328 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, phy_ctrl); | |
3329 | } | |
3330 | } | |
3331 | /* Restart process after E1000_SMARTSPEED_MAX iterations */ | |
3332 | if(adapter->smartspeed++ == E1000_SMARTSPEED_MAX) | |
3333 | adapter->smartspeed = 0; | |
3334 | } | |
3335 | ||
3336 | /** | |
3337 | * e1000_ioctl - | |
3338 | * @netdev: | |
3339 | * @ifreq: | |
3340 | * @cmd: | |
3341 | **/ | |
3342 | ||
3343 | static int | |
3344 | e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
3345 | { | |
3346 | switch (cmd) { | |
3347 | case SIOCGMIIPHY: | |
3348 | case SIOCGMIIREG: | |
3349 | case SIOCSMIIREG: | |
3350 | return e1000_mii_ioctl(netdev, ifr, cmd); | |
3351 | default: | |
3352 | return -EOPNOTSUPP; | |
3353 | } | |
3354 | } | |
3355 | ||
3356 | /** | |
3357 | * e1000_mii_ioctl - | |
3358 | * @netdev: | |
3359 | * @ifreq: | |
3360 | * @cmd: | |
3361 | **/ | |
3362 | ||
3363 | static int | |
3364 | e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
3365 | { | |
60490fe0 | 3366 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
3367 | struct mii_ioctl_data *data = if_mii(ifr); |
3368 | int retval; | |
3369 | uint16_t mii_reg; | |
3370 | uint16_t spddplx; | |
97876fc6 | 3371 | unsigned long flags; |
1da177e4 LT |
3372 | |
3373 | if(adapter->hw.media_type != e1000_media_type_copper) | |
3374 | return -EOPNOTSUPP; | |
3375 | ||
3376 | switch (cmd) { | |
3377 | case SIOCGMIIPHY: | |
3378 | data->phy_id = adapter->hw.phy_addr; | |
3379 | break; | |
3380 | case SIOCGMIIREG: | |
97876fc6 | 3381 | if(!capable(CAP_NET_ADMIN)) |
1da177e4 | 3382 | return -EPERM; |
97876fc6 MC |
3383 | spin_lock_irqsave(&adapter->stats_lock, flags); |
3384 | if(e1000_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, | |
3385 | &data->val_out)) { | |
3386 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 3387 | return -EIO; |
97876fc6 MC |
3388 | } |
3389 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 LT |
3390 | break; |
3391 | case SIOCSMIIREG: | |
97876fc6 | 3392 | if(!capable(CAP_NET_ADMIN)) |
1da177e4 | 3393 | return -EPERM; |
97876fc6 | 3394 | if(data->reg_num & ~(0x1F)) |
1da177e4 LT |
3395 | return -EFAULT; |
3396 | mii_reg = data->val_in; | |
97876fc6 MC |
3397 | spin_lock_irqsave(&adapter->stats_lock, flags); |
3398 | if(e1000_write_phy_reg(&adapter->hw, data->reg_num, | |
3399 | mii_reg)) { | |
3400 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 3401 | return -EIO; |
97876fc6 MC |
3402 | } |
3403 | if(adapter->hw.phy_type == e1000_phy_m88) { | |
1da177e4 LT |
3404 | switch (data->reg_num) { |
3405 | case PHY_CTRL: | |
3406 | if(mii_reg & MII_CR_POWER_DOWN) | |
3407 | break; | |
3408 | if(mii_reg & MII_CR_AUTO_NEG_EN) { | |
3409 | adapter->hw.autoneg = 1; | |
3410 | adapter->hw.autoneg_advertised = 0x2F; | |
3411 | } else { | |
3412 | if (mii_reg & 0x40) | |
3413 | spddplx = SPEED_1000; | |
3414 | else if (mii_reg & 0x2000) | |
3415 | spddplx = SPEED_100; | |
3416 | else | |
3417 | spddplx = SPEED_10; | |
3418 | spddplx += (mii_reg & 0x100) | |
3419 | ? FULL_DUPLEX : | |
3420 | HALF_DUPLEX; | |
3421 | retval = e1000_set_spd_dplx(adapter, | |
3422 | spddplx); | |
97876fc6 MC |
3423 | if(retval) { |
3424 | spin_unlock_irqrestore( | |
3425 | &adapter->stats_lock, | |
3426 | flags); | |
1da177e4 | 3427 | return retval; |
97876fc6 | 3428 | } |
1da177e4 LT |
3429 | } |
3430 | if(netif_running(adapter->netdev)) { | |
3431 | e1000_down(adapter); | |
3432 | e1000_up(adapter); | |
3433 | } else | |
3434 | e1000_reset(adapter); | |
3435 | break; | |
3436 | case M88E1000_PHY_SPEC_CTRL: | |
3437 | case M88E1000_EXT_PHY_SPEC_CTRL: | |
97876fc6 MC |
3438 | if(e1000_phy_reset(&adapter->hw)) { |
3439 | spin_unlock_irqrestore( | |
3440 | &adapter->stats_lock, flags); | |
1da177e4 | 3441 | return -EIO; |
97876fc6 | 3442 | } |
1da177e4 LT |
3443 | break; |
3444 | } | |
3445 | } else { | |
3446 | switch (data->reg_num) { | |
3447 | case PHY_CTRL: | |
3448 | if(mii_reg & MII_CR_POWER_DOWN) | |
3449 | break; | |
3450 | if(netif_running(adapter->netdev)) { | |
3451 | e1000_down(adapter); | |
3452 | e1000_up(adapter); | |
3453 | } else | |
3454 | e1000_reset(adapter); | |
3455 | break; | |
3456 | } | |
3457 | } | |
97876fc6 | 3458 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
1da177e4 LT |
3459 | break; |
3460 | default: | |
3461 | return -EOPNOTSUPP; | |
3462 | } | |
3463 | return E1000_SUCCESS; | |
3464 | } | |
3465 | ||
3466 | void | |
3467 | e1000_pci_set_mwi(struct e1000_hw *hw) | |
3468 | { | |
3469 | struct e1000_adapter *adapter = hw->back; | |
2648345f | 3470 | int ret_val = pci_set_mwi(adapter->pdev); |
1da177e4 | 3471 | |
2648345f MC |
3472 | if(ret_val) |
3473 | DPRINTK(PROBE, ERR, "Error in setting MWI\n"); | |
1da177e4 LT |
3474 | } |
3475 | ||
3476 | void | |
3477 | e1000_pci_clear_mwi(struct e1000_hw *hw) | |
3478 | { | |
3479 | struct e1000_adapter *adapter = hw->back; | |
3480 | ||
3481 | pci_clear_mwi(adapter->pdev); | |
3482 | } | |
3483 | ||
3484 | void | |
3485 | e1000_read_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) | |
3486 | { | |
3487 | struct e1000_adapter *adapter = hw->back; | |
3488 | ||
3489 | pci_read_config_word(adapter->pdev, reg, value); | |
3490 | } | |
3491 | ||
3492 | void | |
3493 | e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) | |
3494 | { | |
3495 | struct e1000_adapter *adapter = hw->back; | |
3496 | ||
3497 | pci_write_config_word(adapter->pdev, reg, *value); | |
3498 | } | |
3499 | ||
3500 | uint32_t | |
3501 | e1000_io_read(struct e1000_hw *hw, unsigned long port) | |
3502 | { | |
3503 | return inl(port); | |
3504 | } | |
3505 | ||
3506 | void | |
3507 | e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value) | |
3508 | { | |
3509 | outl(value, port); | |
3510 | } | |
3511 | ||
3512 | static void | |
3513 | e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) | |
3514 | { | |
60490fe0 | 3515 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
3516 | uint32_t ctrl, rctl; |
3517 | ||
3518 | e1000_irq_disable(adapter); | |
3519 | adapter->vlgrp = grp; | |
3520 | ||
3521 | if(grp) { | |
3522 | /* enable VLAN tag insert/strip */ | |
3523 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
3524 | ctrl |= E1000_CTRL_VME; | |
3525 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
3526 | ||
3527 | /* enable VLAN receive filtering */ | |
3528 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
3529 | rctl |= E1000_RCTL_VFE; | |
3530 | rctl &= ~E1000_RCTL_CFIEN; | |
3531 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2d7edb92 | 3532 | e1000_update_mng_vlan(adapter); |
1da177e4 LT |
3533 | } else { |
3534 | /* disable VLAN tag insert/strip */ | |
3535 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
3536 | ctrl &= ~E1000_CTRL_VME; | |
3537 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
3538 | ||
3539 | /* disable VLAN filtering */ | |
3540 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
3541 | rctl &= ~E1000_RCTL_VFE; | |
3542 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2d7edb92 MC |
3543 | if(adapter->mng_vlan_id != (uint16_t)E1000_MNG_VLAN_NONE) { |
3544 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); | |
3545 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
3546 | } | |
1da177e4 LT |
3547 | } |
3548 | ||
3549 | e1000_irq_enable(adapter); | |
3550 | } | |
3551 | ||
3552 | static void | |
3553 | e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid) | |
3554 | { | |
60490fe0 | 3555 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3556 | uint32_t vfta, index; |
2d7edb92 MC |
3557 | if((adapter->hw.mng_cookie.status & |
3558 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && | |
3559 | (vid == adapter->mng_vlan_id)) | |
3560 | return; | |
1da177e4 LT |
3561 | /* add VID to filter table */ |
3562 | index = (vid >> 5) & 0x7F; | |
3563 | vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
3564 | vfta |= (1 << (vid & 0x1F)); | |
3565 | e1000_write_vfta(&adapter->hw, index, vfta); | |
3566 | } | |
3567 | ||
3568 | static void | |
3569 | e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid) | |
3570 | { | |
60490fe0 | 3571 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
3572 | uint32_t vfta, index; |
3573 | ||
3574 | e1000_irq_disable(adapter); | |
3575 | ||
3576 | if(adapter->vlgrp) | |
3577 | adapter->vlgrp->vlan_devices[vid] = NULL; | |
3578 | ||
3579 | e1000_irq_enable(adapter); | |
3580 | ||
2d7edb92 MC |
3581 | if((adapter->hw.mng_cookie.status & |
3582 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && | |
3583 | (vid == adapter->mng_vlan_id)) | |
3584 | return; | |
1da177e4 LT |
3585 | /* remove VID from filter table */ |
3586 | index = (vid >> 5) & 0x7F; | |
3587 | vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
3588 | vfta &= ~(1 << (vid & 0x1F)); | |
3589 | e1000_write_vfta(&adapter->hw, index, vfta); | |
3590 | } | |
3591 | ||
3592 | static void | |
3593 | e1000_restore_vlan(struct e1000_adapter *adapter) | |
3594 | { | |
3595 | e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
3596 | ||
3597 | if(adapter->vlgrp) { | |
3598 | uint16_t vid; | |
3599 | for(vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
3600 | if(!adapter->vlgrp->vlan_devices[vid]) | |
3601 | continue; | |
3602 | e1000_vlan_rx_add_vid(adapter->netdev, vid); | |
3603 | } | |
3604 | } | |
3605 | } | |
3606 | ||
3607 | int | |
3608 | e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx) | |
3609 | { | |
3610 | adapter->hw.autoneg = 0; | |
3611 | ||
6921368f MC |
3612 | /* Fiber NICs only allow 1000 gbps Full duplex */ |
3613 | if((adapter->hw.media_type == e1000_media_type_fiber) && | |
3614 | spddplx != (SPEED_1000 + DUPLEX_FULL)) { | |
3615 | DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); | |
3616 | return -EINVAL; | |
3617 | } | |
3618 | ||
1da177e4 LT |
3619 | switch(spddplx) { |
3620 | case SPEED_10 + DUPLEX_HALF: | |
3621 | adapter->hw.forced_speed_duplex = e1000_10_half; | |
3622 | break; | |
3623 | case SPEED_10 + DUPLEX_FULL: | |
3624 | adapter->hw.forced_speed_duplex = e1000_10_full; | |
3625 | break; | |
3626 | case SPEED_100 + DUPLEX_HALF: | |
3627 | adapter->hw.forced_speed_duplex = e1000_100_half; | |
3628 | break; | |
3629 | case SPEED_100 + DUPLEX_FULL: | |
3630 | adapter->hw.forced_speed_duplex = e1000_100_full; | |
3631 | break; | |
3632 | case SPEED_1000 + DUPLEX_FULL: | |
3633 | adapter->hw.autoneg = 1; | |
3634 | adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL; | |
3635 | break; | |
3636 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ | |
3637 | default: | |
2648345f | 3638 | DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); |
1da177e4 LT |
3639 | return -EINVAL; |
3640 | } | |
3641 | return 0; | |
3642 | } | |
3643 | ||
1da177e4 LT |
3644 | static int |
3645 | e1000_suspend(struct pci_dev *pdev, uint32_t state) | |
3646 | { | |
3647 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 3648 | struct e1000_adapter *adapter = netdev_priv(netdev); |
2d7edb92 | 3649 | uint32_t ctrl, ctrl_ext, rctl, manc, status, swsm; |
1da177e4 LT |
3650 | uint32_t wufc = adapter->wol; |
3651 | ||
3652 | netif_device_detach(netdev); | |
3653 | ||
3654 | if(netif_running(netdev)) | |
3655 | e1000_down(adapter); | |
3656 | ||
3657 | status = E1000_READ_REG(&adapter->hw, STATUS); | |
3658 | if(status & E1000_STATUS_LU) | |
3659 | wufc &= ~E1000_WUFC_LNKC; | |
3660 | ||
3661 | if(wufc) { | |
3662 | e1000_setup_rctl(adapter); | |
3663 | e1000_set_multi(netdev); | |
3664 | ||
3665 | /* turn on all-multi mode if wake on multicast is enabled */ | |
3666 | if(adapter->wol & E1000_WUFC_MC) { | |
3667 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
3668 | rctl |= E1000_RCTL_MPE; | |
3669 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
3670 | } | |
3671 | ||
3672 | if(adapter->hw.mac_type >= e1000_82540) { | |
3673 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
3674 | /* advertise wake from D3Cold */ | |
3675 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
3676 | /* phy power management enable */ | |
3677 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
3678 | ctrl |= E1000_CTRL_ADVD3WUC | | |
3679 | E1000_CTRL_EN_PHY_PWR_MGMT; | |
3680 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
3681 | } | |
3682 | ||
3683 | if(adapter->hw.media_type == e1000_media_type_fiber || | |
3684 | adapter->hw.media_type == e1000_media_type_internal_serdes) { | |
3685 | /* keep the laser running in D3 */ | |
3686 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); | |
3687 | ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; | |
3688 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, ctrl_ext); | |
3689 | } | |
3690 | ||
2d7edb92 MC |
3691 | /* Allow time for pending master requests to run */ |
3692 | e1000_disable_pciex_master(&adapter->hw); | |
3693 | ||
1da177e4 LT |
3694 | E1000_WRITE_REG(&adapter->hw, WUC, E1000_WUC_PME_EN); |
3695 | E1000_WRITE_REG(&adapter->hw, WUFC, wufc); | |
3696 | pci_enable_wake(pdev, 3, 1); | |
3697 | pci_enable_wake(pdev, 4, 1); /* 4 == D3 cold */ | |
3698 | } else { | |
3699 | E1000_WRITE_REG(&adapter->hw, WUC, 0); | |
3700 | E1000_WRITE_REG(&adapter->hw, WUFC, 0); | |
3701 | pci_enable_wake(pdev, 3, 0); | |
3702 | pci_enable_wake(pdev, 4, 0); /* 4 == D3 cold */ | |
3703 | } | |
3704 | ||
3705 | pci_save_state(pdev); | |
3706 | ||
3707 | if(adapter->hw.mac_type >= e1000_82540 && | |
3708 | adapter->hw.media_type == e1000_media_type_copper) { | |
3709 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
3710 | if(manc & E1000_MANC_SMBUS_EN) { | |
3711 | manc |= E1000_MANC_ARP_EN; | |
3712 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
3713 | pci_enable_wake(pdev, 3, 1); | |
3714 | pci_enable_wake(pdev, 4, 1); /* 4 == D3 cold */ | |
3715 | } | |
3716 | } | |
3717 | ||
2d7edb92 MC |
3718 | switch(adapter->hw.mac_type) { |
3719 | case e1000_82573: | |
3720 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
3721 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
3722 | swsm & ~E1000_SWSM_DRV_LOAD); | |
3723 | break; | |
3724 | default: | |
3725 | break; | |
3726 | } | |
3727 | ||
1da177e4 LT |
3728 | pci_disable_device(pdev); |
3729 | ||
3730 | state = (state > 0) ? 3 : 0; | |
3731 | pci_set_power_state(pdev, state); | |
3732 | ||
3733 | return 0; | |
3734 | } | |
3735 | ||
3736 | #ifdef CONFIG_PM | |
3737 | static int | |
3738 | e1000_resume(struct pci_dev *pdev) | |
3739 | { | |
3740 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 3741 | struct e1000_adapter *adapter = netdev_priv(netdev); |
2b02893e | 3742 | uint32_t manc, ret_val, swsm; |
1da177e4 LT |
3743 | |
3744 | pci_set_power_state(pdev, 0); | |
3745 | pci_restore_state(pdev); | |
2b02893e | 3746 | ret_val = pci_enable_device(pdev); |
a4cb847d | 3747 | pci_set_master(pdev); |
1da177e4 LT |
3748 | |
3749 | pci_enable_wake(pdev, 3, 0); | |
3750 | pci_enable_wake(pdev, 4, 0); /* 4 == D3 cold */ | |
3751 | ||
3752 | e1000_reset(adapter); | |
3753 | E1000_WRITE_REG(&adapter->hw, WUS, ~0); | |
3754 | ||
3755 | if(netif_running(netdev)) | |
3756 | e1000_up(adapter); | |
3757 | ||
3758 | netif_device_attach(netdev); | |
3759 | ||
3760 | if(adapter->hw.mac_type >= e1000_82540 && | |
3761 | adapter->hw.media_type == e1000_media_type_copper) { | |
3762 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
3763 | manc &= ~(E1000_MANC_ARP_EN); | |
3764 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
3765 | } | |
3766 | ||
2d7edb92 MC |
3767 | switch(adapter->hw.mac_type) { |
3768 | case e1000_82573: | |
3769 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
3770 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
3771 | swsm | E1000_SWSM_DRV_LOAD); | |
3772 | break; | |
3773 | default: | |
3774 | break; | |
3775 | } | |
3776 | ||
1da177e4 LT |
3777 | return 0; |
3778 | } | |
3779 | #endif | |
1da177e4 LT |
3780 | #ifdef CONFIG_NET_POLL_CONTROLLER |
3781 | /* | |
3782 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
3783 | * without having to re-enable interrupts. It's not called while | |
3784 | * the interrupt routine is executing. | |
3785 | */ | |
3786 | static void | |
2648345f | 3787 | e1000_netpoll(struct net_device *netdev) |
1da177e4 | 3788 | { |
60490fe0 | 3789 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
3790 | disable_irq(adapter->pdev->irq); |
3791 | e1000_intr(adapter->pdev->irq, netdev, NULL); | |
6b0b3157 | 3792 | e1000_clean_tx_irq(adapter); |
1da177e4 LT |
3793 | enable_irq(adapter->pdev->irq); |
3794 | } | |
3795 | #endif | |
3796 | ||
3797 | /* e1000_main.c */ |