]>
Commit | Line | Data |
---|---|---|
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 | |
73629bbc JB |
32 | * 6.3.9 12/16/2005 |
33 | * o incorporate fix for recycled skbs from IBM LTC | |
34 | * 6.3.7 11/18/2005 | |
35 | * o Honor eeprom setting for enabling/disabling Wake On Lan | |
36 | * 6.3.5 11/17/2005 | |
37 | * o Fix memory leak in rx ring handling for PCI Express adapters | |
38 | * 6.3.4 11/8/05 | |
39 | * o Patch from Jesper Juhl to remove redundant NULL checks for kfree | |
40 | * 6.3.2 9/20/05 | |
41 | * o Render logic that sets/resets DRV_LOAD as inline functions to | |
42 | * avoid code replication. If f/w is AMT then set DRV_LOAD only when | |
43 | * network interface is open. | |
44 | * o Handle DRV_LOAD set/reset in cases where AMT uses VLANs. | |
45 | * o Adjust PBA partioning for Jumbo frames using MTU size and not | |
46 | * rx_buffer_len | |
47 | * 6.3.1 9/19/05 | |
48 | * o Use adapter->tx_timeout_factor in Tx Hung Detect logic | |
49 | (e1000_clean_tx_irq) | |
50 | * o Support for 8086:10B5 device (Quad Port) | |
51 | * 6.2.14 9/15/05 | |
52 | * o In AMT enabled configurations, set/reset DRV_LOAD bit on interface | |
53 | * open/close | |
54 | * 6.2.13 9/14/05 | |
55 | * o Invoke e1000_check_mng_mode only for 8257x controllers since it | |
56 | * accesses the FWSM that is not supported in other controllers | |
57 | * 6.2.12 9/9/05 | |
58 | * o Add support for device id E1000_DEV_ID_82546GB_QUAD_COPPER | |
59 | * o set RCTL:SECRC only for controllers newer than 82543. | |
60 | * o When the n/w interface comes down reset DRV_LOAD bit to notify f/w. | |
61 | * This code was moved from e1000_remove to e1000_close | |
62 | * 6.2.10 9/6/05 | |
63 | * o Fix error in updating RDT in el1000_alloc_rx_buffers[_ps] -- one off. | |
64 | * o Enable fc by default on 82573 controllers (do not read eeprom) | |
65 | * o Fix rx_errors statistic not to include missed_packet_count | |
66 | * o Fix rx_dropped statistic not to include missed_packet_count | |
67 | (Padraig Brady) | |
68 | * 6.2.9 8/30/05 | |
69 | * o Remove call to update statistics from the controller ib e1000_get_stats | |
70 | * 6.2.8 8/30/05 | |
71 | * o Improved algorithm for rx buffer allocation/rdt update | |
72 | * o Flow control watermarks relative to rx PBA size | |
73 | * o Simplified 'Tx Hung' detect logic | |
74 | * 6.2.7 8/17/05 | |
75 | * o Report rx buffer allocation failures and tx timeout counts in stats | |
76 | * 6.2.6 8/16/05 | |
77 | * o Implement workaround for controller erratum -- linear non-tso packet | |
78 | * following a TSO gets written back prematurely | |
79 | * 6.2.5 8/15/05 | |
80 | * o Set netdev->tx_queue_len based on link speed/duplex settings. | |
81 | * o Fix net_stats.rx_fifo_errors <p@draigBrady.com> | |
82 | * o Do not power off PHY if SoL/IDER session is active | |
83 | * 6.2.4 8/10/05 | |
84 | * o Fix loopback test setup/cleanup for 82571/3 controllers | |
85 | * o Fix parsing of outgoing packets (e1000_transfer_dhcp_info) to treat | |
86 | * all packets as raw | |
87 | * o Prevent operations that will cause the PHY to be reset if SoL/IDER | |
88 | * sessions are active and log a message | |
89 | * 6.2.2 7/21/05 | |
90 | * o used fixed size descriptors for all MTU sizes, reduces memory load | |
73629bbc JB |
91 | * 6.1.2 4/13/05 |
92 | * o Fixed ethtool diagnostics | |
93 | * o Enabled flow control to take default eeprom settings | |
94 | * o Added stats_lock around e1000_read_phy_reg commands to avoid concurrent | |
95 | * calls, one from mii_ioctl and other from within update_stats while | |
96 | * processing MIIREG ioctl. | |
1da177e4 LT |
97 | */ |
98 | ||
99 | char e1000_driver_name[] = "e1000"; | |
3ad2cc67 | 100 | static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver"; |
1da177e4 LT |
101 | #ifndef CONFIG_E1000_NAPI |
102 | #define DRIVERNAPI | |
103 | #else | |
104 | #define DRIVERNAPI "-NAPI" | |
105 | #endif | |
c1605eb3 | 106 | #define DRV_VERSION "7.0.33-k2"DRIVERNAPI |
1da177e4 | 107 | char e1000_driver_version[] = DRV_VERSION; |
3ad2cc67 | 108 | static char e1000_copyright[] = "Copyright (c) 1999-2005 Intel Corporation."; |
1da177e4 LT |
109 | |
110 | /* e1000_pci_tbl - PCI Device ID Table | |
111 | * | |
112 | * Last entry must be all 0s | |
113 | * | |
114 | * Macro expands to... | |
115 | * {PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)} | |
116 | */ | |
117 | static struct pci_device_id e1000_pci_tbl[] = { | |
118 | INTEL_E1000_ETHERNET_DEVICE(0x1000), | |
119 | INTEL_E1000_ETHERNET_DEVICE(0x1001), | |
120 | INTEL_E1000_ETHERNET_DEVICE(0x1004), | |
121 | INTEL_E1000_ETHERNET_DEVICE(0x1008), | |
122 | INTEL_E1000_ETHERNET_DEVICE(0x1009), | |
123 | INTEL_E1000_ETHERNET_DEVICE(0x100C), | |
124 | INTEL_E1000_ETHERNET_DEVICE(0x100D), | |
125 | INTEL_E1000_ETHERNET_DEVICE(0x100E), | |
126 | INTEL_E1000_ETHERNET_DEVICE(0x100F), | |
127 | INTEL_E1000_ETHERNET_DEVICE(0x1010), | |
128 | INTEL_E1000_ETHERNET_DEVICE(0x1011), | |
129 | INTEL_E1000_ETHERNET_DEVICE(0x1012), | |
130 | INTEL_E1000_ETHERNET_DEVICE(0x1013), | |
131 | INTEL_E1000_ETHERNET_DEVICE(0x1014), | |
132 | INTEL_E1000_ETHERNET_DEVICE(0x1015), | |
133 | INTEL_E1000_ETHERNET_DEVICE(0x1016), | |
134 | INTEL_E1000_ETHERNET_DEVICE(0x1017), | |
135 | INTEL_E1000_ETHERNET_DEVICE(0x1018), | |
136 | INTEL_E1000_ETHERNET_DEVICE(0x1019), | |
2648345f | 137 | INTEL_E1000_ETHERNET_DEVICE(0x101A), |
1da177e4 LT |
138 | INTEL_E1000_ETHERNET_DEVICE(0x101D), |
139 | INTEL_E1000_ETHERNET_DEVICE(0x101E), | |
140 | INTEL_E1000_ETHERNET_DEVICE(0x1026), | |
141 | INTEL_E1000_ETHERNET_DEVICE(0x1027), | |
142 | INTEL_E1000_ETHERNET_DEVICE(0x1028), | |
07b8fede MC |
143 | INTEL_E1000_ETHERNET_DEVICE(0x105E), |
144 | INTEL_E1000_ETHERNET_DEVICE(0x105F), | |
145 | INTEL_E1000_ETHERNET_DEVICE(0x1060), | |
1da177e4 LT |
146 | INTEL_E1000_ETHERNET_DEVICE(0x1075), |
147 | INTEL_E1000_ETHERNET_DEVICE(0x1076), | |
148 | INTEL_E1000_ETHERNET_DEVICE(0x1077), | |
149 | INTEL_E1000_ETHERNET_DEVICE(0x1078), | |
150 | INTEL_E1000_ETHERNET_DEVICE(0x1079), | |
151 | INTEL_E1000_ETHERNET_DEVICE(0x107A), | |
152 | INTEL_E1000_ETHERNET_DEVICE(0x107B), | |
153 | INTEL_E1000_ETHERNET_DEVICE(0x107C), | |
07b8fede MC |
154 | INTEL_E1000_ETHERNET_DEVICE(0x107D), |
155 | INTEL_E1000_ETHERNET_DEVICE(0x107E), | |
156 | INTEL_E1000_ETHERNET_DEVICE(0x107F), | |
1da177e4 | 157 | INTEL_E1000_ETHERNET_DEVICE(0x108A), |
2648345f MC |
158 | INTEL_E1000_ETHERNET_DEVICE(0x108B), |
159 | INTEL_E1000_ETHERNET_DEVICE(0x108C), | |
6418ecc6 JK |
160 | INTEL_E1000_ETHERNET_DEVICE(0x1096), |
161 | INTEL_E1000_ETHERNET_DEVICE(0x1098), | |
b7ee49db | 162 | INTEL_E1000_ETHERNET_DEVICE(0x1099), |
07b8fede | 163 | INTEL_E1000_ETHERNET_DEVICE(0x109A), |
b7ee49db | 164 | INTEL_E1000_ETHERNET_DEVICE(0x10B5), |
6418ecc6 | 165 | INTEL_E1000_ETHERNET_DEVICE(0x10B9), |
1da177e4 LT |
166 | /* required last entry */ |
167 | {0,} | |
168 | }; | |
169 | ||
170 | MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); | |
171 | ||
172 | int e1000_up(struct e1000_adapter *adapter); | |
173 | void e1000_down(struct e1000_adapter *adapter); | |
174 | void e1000_reset(struct e1000_adapter *adapter); | |
175 | int e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx); | |
581d708e MC |
176 | int e1000_setup_all_tx_resources(struct e1000_adapter *adapter); |
177 | int e1000_setup_all_rx_resources(struct e1000_adapter *adapter); | |
178 | void e1000_free_all_tx_resources(struct e1000_adapter *adapter); | |
179 | void e1000_free_all_rx_resources(struct e1000_adapter *adapter); | |
3ad2cc67 AB |
180 | static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
181 | struct e1000_tx_ring *txdr); | |
182 | static int e1000_setup_rx_resources(struct e1000_adapter *adapter, | |
183 | struct e1000_rx_ring *rxdr); | |
184 | static void e1000_free_tx_resources(struct e1000_adapter *adapter, | |
185 | struct e1000_tx_ring *tx_ring); | |
186 | static void e1000_free_rx_resources(struct e1000_adapter *adapter, | |
187 | struct e1000_rx_ring *rx_ring); | |
1da177e4 LT |
188 | void e1000_update_stats(struct e1000_adapter *adapter); |
189 | ||
190 | /* Local Function Prototypes */ | |
191 | ||
192 | static int e1000_init_module(void); | |
193 | static void e1000_exit_module(void); | |
194 | static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent); | |
195 | static void __devexit e1000_remove(struct pci_dev *pdev); | |
581d708e | 196 | static int e1000_alloc_queues(struct e1000_adapter *adapter); |
1da177e4 LT |
197 | static int e1000_sw_init(struct e1000_adapter *adapter); |
198 | static int e1000_open(struct net_device *netdev); | |
199 | static int e1000_close(struct net_device *netdev); | |
200 | static void e1000_configure_tx(struct e1000_adapter *adapter); | |
201 | static void e1000_configure_rx(struct e1000_adapter *adapter); | |
202 | static void e1000_setup_rctl(struct e1000_adapter *adapter); | |
581d708e MC |
203 | static void e1000_clean_all_tx_rings(struct e1000_adapter *adapter); |
204 | static void e1000_clean_all_rx_rings(struct e1000_adapter *adapter); | |
205 | static void e1000_clean_tx_ring(struct e1000_adapter *adapter, | |
206 | struct e1000_tx_ring *tx_ring); | |
207 | static void e1000_clean_rx_ring(struct e1000_adapter *adapter, | |
208 | struct e1000_rx_ring *rx_ring); | |
1da177e4 LT |
209 | static void e1000_set_multi(struct net_device *netdev); |
210 | static void e1000_update_phy_info(unsigned long data); | |
211 | static void e1000_watchdog(unsigned long data); | |
212 | static void e1000_watchdog_task(struct e1000_adapter *adapter); | |
213 | static void e1000_82547_tx_fifo_stall(unsigned long data); | |
214 | static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev); | |
215 | static struct net_device_stats * e1000_get_stats(struct net_device *netdev); | |
216 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu); | |
217 | static int e1000_set_mac(struct net_device *netdev, void *p); | |
218 | static irqreturn_t e1000_intr(int irq, void *data, struct pt_regs *regs); | |
581d708e MC |
219 | static boolean_t e1000_clean_tx_irq(struct e1000_adapter *adapter, |
220 | struct e1000_tx_ring *tx_ring); | |
1da177e4 | 221 | #ifdef CONFIG_E1000_NAPI |
581d708e | 222 | static int e1000_clean(struct net_device *poll_dev, int *budget); |
1da177e4 | 223 | static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter, |
581d708e | 224 | struct e1000_rx_ring *rx_ring, |
1da177e4 | 225 | int *work_done, int work_to_do); |
2d7edb92 | 226 | static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
581d708e | 227 | struct e1000_rx_ring *rx_ring, |
2d7edb92 | 228 | int *work_done, int work_to_do); |
1da177e4 | 229 | #else |
581d708e MC |
230 | static boolean_t e1000_clean_rx_irq(struct e1000_adapter *adapter, |
231 | struct e1000_rx_ring *rx_ring); | |
232 | static boolean_t e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, | |
233 | struct e1000_rx_ring *rx_ring); | |
1da177e4 | 234 | #endif |
581d708e | 235 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
72d64a43 JK |
236 | struct e1000_rx_ring *rx_ring, |
237 | int cleaned_count); | |
581d708e | 238 | static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, |
72d64a43 JK |
239 | struct e1000_rx_ring *rx_ring, |
240 | int cleaned_count); | |
1da177e4 LT |
241 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd); |
242 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
243 | int cmd); | |
244 | void e1000_set_ethtool_ops(struct net_device *netdev); | |
245 | static void e1000_enter_82542_rst(struct e1000_adapter *adapter); | |
246 | static void e1000_leave_82542_rst(struct e1000_adapter *adapter); | |
247 | static void e1000_tx_timeout(struct net_device *dev); | |
87041639 | 248 | static void e1000_reset_task(struct net_device *dev); |
1da177e4 LT |
249 | static void e1000_smartspeed(struct e1000_adapter *adapter); |
250 | static inline int e1000_82547_fifo_workaround(struct e1000_adapter *adapter, | |
251 | struct sk_buff *skb); | |
252 | ||
253 | static void e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp); | |
254 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid); | |
255 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid); | |
256 | static void e1000_restore_vlan(struct e1000_adapter *adapter); | |
257 | ||
1da177e4 | 258 | #ifdef CONFIG_PM |
977e74b5 | 259 | static int e1000_suspend(struct pci_dev *pdev, pm_message_t state); |
1da177e4 LT |
260 | static int e1000_resume(struct pci_dev *pdev); |
261 | #endif | |
262 | ||
263 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
264 | /* for netdump / net console */ | |
265 | static void e1000_netpoll (struct net_device *netdev); | |
266 | #endif | |
267 | ||
24025e4e | 268 | |
1da177e4 LT |
269 | /* Exported from other modules */ |
270 | ||
271 | extern void e1000_check_options(struct e1000_adapter *adapter); | |
272 | ||
273 | static struct pci_driver e1000_driver = { | |
274 | .name = e1000_driver_name, | |
275 | .id_table = e1000_pci_tbl, | |
276 | .probe = e1000_probe, | |
277 | .remove = __devexit_p(e1000_remove), | |
278 | /* Power Managment Hooks */ | |
279 | #ifdef CONFIG_PM | |
280 | .suspend = e1000_suspend, | |
281 | .resume = e1000_resume | |
282 | #endif | |
283 | }; | |
284 | ||
285 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
286 | MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); | |
287 | MODULE_LICENSE("GPL"); | |
288 | MODULE_VERSION(DRV_VERSION); | |
289 | ||
290 | static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; | |
291 | module_param(debug, int, 0); | |
292 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
293 | ||
294 | /** | |
295 | * e1000_init_module - Driver Registration Routine | |
296 | * | |
297 | * e1000_init_module is the first routine called when the driver is | |
298 | * loaded. All it does is register with the PCI subsystem. | |
299 | **/ | |
300 | ||
301 | static int __init | |
302 | e1000_init_module(void) | |
303 | { | |
304 | int ret; | |
305 | printk(KERN_INFO "%s - version %s\n", | |
306 | e1000_driver_string, e1000_driver_version); | |
307 | ||
308 | printk(KERN_INFO "%s\n", e1000_copyright); | |
309 | ||
310 | ret = pci_module_init(&e1000_driver); | |
8b378def | 311 | |
1da177e4 LT |
312 | return ret; |
313 | } | |
314 | ||
315 | module_init(e1000_init_module); | |
316 | ||
317 | /** | |
318 | * e1000_exit_module - Driver Exit Cleanup Routine | |
319 | * | |
320 | * e1000_exit_module is called just before the driver is removed | |
321 | * from memory. | |
322 | **/ | |
323 | ||
324 | static void __exit | |
325 | e1000_exit_module(void) | |
326 | { | |
1da177e4 LT |
327 | pci_unregister_driver(&e1000_driver); |
328 | } | |
329 | ||
330 | module_exit(e1000_exit_module); | |
331 | ||
332 | /** | |
333 | * e1000_irq_disable - Mask off interrupt generation on the NIC | |
334 | * @adapter: board private structure | |
335 | **/ | |
336 | ||
337 | static inline void | |
338 | e1000_irq_disable(struct e1000_adapter *adapter) | |
339 | { | |
340 | atomic_inc(&adapter->irq_sem); | |
341 | E1000_WRITE_REG(&adapter->hw, IMC, ~0); | |
342 | E1000_WRITE_FLUSH(&adapter->hw); | |
343 | synchronize_irq(adapter->pdev->irq); | |
344 | } | |
345 | ||
346 | /** | |
347 | * e1000_irq_enable - Enable default interrupt generation settings | |
348 | * @adapter: board private structure | |
349 | **/ | |
350 | ||
351 | static inline void | |
352 | e1000_irq_enable(struct e1000_adapter *adapter) | |
353 | { | |
96838a40 | 354 | if (likely(atomic_dec_and_test(&adapter->irq_sem))) { |
1da177e4 LT |
355 | E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK); |
356 | E1000_WRITE_FLUSH(&adapter->hw); | |
357 | } | |
358 | } | |
3ad2cc67 AB |
359 | |
360 | static void | |
2d7edb92 MC |
361 | e1000_update_mng_vlan(struct e1000_adapter *adapter) |
362 | { | |
363 | struct net_device *netdev = adapter->netdev; | |
364 | uint16_t vid = adapter->hw.mng_cookie.vlan_id; | |
365 | uint16_t old_vid = adapter->mng_vlan_id; | |
96838a40 JB |
366 | if (adapter->vlgrp) { |
367 | if (!adapter->vlgrp->vlan_devices[vid]) { | |
368 | if (adapter->hw.mng_cookie.status & | |
2d7edb92 MC |
369 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) { |
370 | e1000_vlan_rx_add_vid(netdev, vid); | |
371 | adapter->mng_vlan_id = vid; | |
372 | } else | |
373 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
96838a40 JB |
374 | |
375 | if ((old_vid != (uint16_t)E1000_MNG_VLAN_NONE) && | |
376 | (vid != old_vid) && | |
2d7edb92 MC |
377 | !adapter->vlgrp->vlan_devices[old_vid]) |
378 | e1000_vlan_rx_kill_vid(netdev, old_vid); | |
c5f226fe JK |
379 | } else |
380 | adapter->mng_vlan_id = vid; | |
2d7edb92 MC |
381 | } |
382 | } | |
b55ccb35 JK |
383 | |
384 | /** | |
385 | * e1000_release_hw_control - release control of the h/w to f/w | |
386 | * @adapter: address of board private structure | |
387 | * | |
388 | * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit. | |
389 | * For ASF and Pass Through versions of f/w this means that the | |
390 | * driver is no longer loaded. For AMT version (only with 82573) i | |
391 | * of the f/w this means that the netowrk i/f is closed. | |
392 | * | |
393 | **/ | |
394 | ||
395 | static inline void | |
396 | e1000_release_hw_control(struct e1000_adapter *adapter) | |
397 | { | |
398 | uint32_t ctrl_ext; | |
399 | uint32_t swsm; | |
400 | ||
401 | /* Let firmware taken over control of h/w */ | |
402 | switch (adapter->hw.mac_type) { | |
403 | case e1000_82571: | |
404 | case e1000_82572: | |
405 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); | |
406 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, | |
407 | ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); | |
408 | break; | |
409 | case e1000_82573: | |
410 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
411 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
412 | swsm & ~E1000_SWSM_DRV_LOAD); | |
413 | default: | |
414 | break; | |
415 | } | |
416 | } | |
417 | ||
418 | /** | |
419 | * e1000_get_hw_control - get control of the h/w from f/w | |
420 | * @adapter: address of board private structure | |
421 | * | |
422 | * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit. | |
423 | * For ASF and Pass Through versions of f/w this means that | |
424 | * the driver is loaded. For AMT version (only with 82573) | |
425 | * of the f/w this means that the netowrk i/f is open. | |
426 | * | |
427 | **/ | |
428 | ||
429 | static inline void | |
430 | e1000_get_hw_control(struct e1000_adapter *adapter) | |
431 | { | |
432 | uint32_t ctrl_ext; | |
433 | uint32_t swsm; | |
434 | /* Let firmware know the driver has taken over */ | |
435 | switch (adapter->hw.mac_type) { | |
436 | case e1000_82571: | |
437 | case e1000_82572: | |
438 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); | |
439 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, | |
440 | ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); | |
441 | break; | |
442 | case e1000_82573: | |
443 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
444 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
445 | swsm | E1000_SWSM_DRV_LOAD); | |
446 | break; | |
447 | default: | |
448 | break; | |
449 | } | |
450 | } | |
451 | ||
1da177e4 LT |
452 | int |
453 | e1000_up(struct e1000_adapter *adapter) | |
454 | { | |
455 | struct net_device *netdev = adapter->netdev; | |
581d708e | 456 | int i, err; |
1da177e4 LT |
457 | |
458 | /* hardware has been reset, we need to reload some things */ | |
459 | ||
460 | /* Reset the PHY if it was previously powered down */ | |
96838a40 | 461 | if (adapter->hw.media_type == e1000_media_type_copper) { |
1da177e4 LT |
462 | uint16_t mii_reg; |
463 | e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); | |
96838a40 | 464 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 LT |
465 | e1000_phy_reset(&adapter->hw); |
466 | } | |
467 | ||
468 | e1000_set_multi(netdev); | |
469 | ||
470 | e1000_restore_vlan(adapter); | |
471 | ||
472 | e1000_configure_tx(adapter); | |
473 | e1000_setup_rctl(adapter); | |
474 | e1000_configure_rx(adapter); | |
72d64a43 JK |
475 | /* call E1000_DESC_UNUSED which always leaves |
476 | * at least 1 descriptor unused to make sure | |
477 | * next_to_use != next_to_clean */ | |
f56799ea | 478 | for (i = 0; i < adapter->num_rx_queues; i++) { |
72d64a43 | 479 | struct e1000_rx_ring *ring = &adapter->rx_ring[i]; |
a292ca6e JK |
480 | adapter->alloc_rx_buf(adapter, ring, |
481 | E1000_DESC_UNUSED(ring)); | |
f56799ea | 482 | } |
1da177e4 | 483 | |
fa4f7ef3 | 484 | #ifdef CONFIG_PCI_MSI |
96838a40 | 485 | if (adapter->hw.mac_type > e1000_82547_rev_2) { |
fa4f7ef3 | 486 | adapter->have_msi = TRUE; |
96838a40 | 487 | if ((err = pci_enable_msi(adapter->pdev))) { |
fa4f7ef3 MC |
488 | DPRINTK(PROBE, ERR, |
489 | "Unable to allocate MSI interrupt Error: %d\n", err); | |
490 | adapter->have_msi = FALSE; | |
491 | } | |
492 | } | |
493 | #endif | |
96838a40 | 494 | if ((err = request_irq(adapter->pdev->irq, &e1000_intr, |
1da177e4 | 495 | SA_SHIRQ | SA_SAMPLE_RANDOM, |
2648345f MC |
496 | netdev->name, netdev))) { |
497 | DPRINTK(PROBE, ERR, | |
498 | "Unable to allocate interrupt Error: %d\n", err); | |
1da177e4 | 499 | return err; |
2648345f | 500 | } |
1da177e4 | 501 | |
7bfa4816 JK |
502 | adapter->tx_queue_len = netdev->tx_queue_len; |
503 | ||
1da177e4 | 504 | mod_timer(&adapter->watchdog_timer, jiffies); |
1da177e4 LT |
505 | |
506 | #ifdef CONFIG_E1000_NAPI | |
507 | netif_poll_enable(netdev); | |
508 | #endif | |
5de55624 MC |
509 | e1000_irq_enable(adapter); |
510 | ||
1da177e4 LT |
511 | return 0; |
512 | } | |
513 | ||
514 | void | |
515 | e1000_down(struct e1000_adapter *adapter) | |
516 | { | |
517 | struct net_device *netdev = adapter->netdev; | |
57128197 JK |
518 | boolean_t mng_mode_enabled = (adapter->hw.mac_type >= e1000_82571) && |
519 | e1000_check_mng_mode(&adapter->hw); | |
1da177e4 LT |
520 | |
521 | e1000_irq_disable(adapter); | |
c1605eb3 | 522 | |
1da177e4 | 523 | free_irq(adapter->pdev->irq, netdev); |
fa4f7ef3 | 524 | #ifdef CONFIG_PCI_MSI |
96838a40 | 525 | if (adapter->hw.mac_type > e1000_82547_rev_2 && |
fa4f7ef3 MC |
526 | adapter->have_msi == TRUE) |
527 | pci_disable_msi(adapter->pdev); | |
528 | #endif | |
1da177e4 LT |
529 | del_timer_sync(&adapter->tx_fifo_stall_timer); |
530 | del_timer_sync(&adapter->watchdog_timer); | |
531 | del_timer_sync(&adapter->phy_info_timer); | |
532 | ||
533 | #ifdef CONFIG_E1000_NAPI | |
534 | netif_poll_disable(netdev); | |
535 | #endif | |
7bfa4816 | 536 | netdev->tx_queue_len = adapter->tx_queue_len; |
1da177e4 LT |
537 | adapter->link_speed = 0; |
538 | adapter->link_duplex = 0; | |
539 | netif_carrier_off(netdev); | |
540 | netif_stop_queue(netdev); | |
541 | ||
542 | e1000_reset(adapter); | |
581d708e MC |
543 | e1000_clean_all_tx_rings(adapter); |
544 | e1000_clean_all_rx_rings(adapter); | |
1da177e4 | 545 | |
57128197 JK |
546 | /* Power down the PHY so no link is implied when interface is down * |
547 | * The PHY cannot be powered down if any of the following is TRUE * | |
548 | * (a) WoL is enabled | |
549 | * (b) AMT is active | |
550 | * (c) SoL/IDER session is active */ | |
551 | if (!adapter->wol && adapter->hw.mac_type >= e1000_82540 && | |
2d7edb92 | 552 | adapter->hw.media_type == e1000_media_type_copper && |
57128197 JK |
553 | !(E1000_READ_REG(&adapter->hw, MANC) & E1000_MANC_SMBUS_EN) && |
554 | !mng_mode_enabled && | |
555 | !e1000_check_phy_reset_block(&adapter->hw)) { | |
1da177e4 LT |
556 | uint16_t mii_reg; |
557 | e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); | |
558 | mii_reg |= MII_CR_POWER_DOWN; | |
559 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg); | |
4e48a2b9 | 560 | mdelay(1); |
1da177e4 LT |
561 | } |
562 | } | |
563 | ||
564 | void | |
565 | e1000_reset(struct e1000_adapter *adapter) | |
566 | { | |
2d7edb92 | 567 | uint32_t pba, manc; |
1125ecbc | 568 | uint16_t fc_high_water_mark = E1000_FC_HIGH_DIFF; |
1da177e4 LT |
569 | |
570 | /* Repartition Pba for greater than 9k mtu | |
571 | * To take effect CTRL.RST is required. | |
572 | */ | |
573 | ||
2d7edb92 MC |
574 | switch (adapter->hw.mac_type) { |
575 | case e1000_82547: | |
0e6ef3e0 | 576 | case e1000_82547_rev_2: |
2d7edb92 MC |
577 | pba = E1000_PBA_30K; |
578 | break; | |
868d5309 MC |
579 | case e1000_82571: |
580 | case e1000_82572: | |
6418ecc6 | 581 | case e1000_80003es2lan: |
868d5309 MC |
582 | pba = E1000_PBA_38K; |
583 | break; | |
2d7edb92 MC |
584 | case e1000_82573: |
585 | pba = E1000_PBA_12K; | |
586 | break; | |
587 | default: | |
588 | pba = E1000_PBA_48K; | |
589 | break; | |
590 | } | |
591 | ||
96838a40 | 592 | if ((adapter->hw.mac_type != e1000_82573) && |
f11b7f85 | 593 | (adapter->netdev->mtu > E1000_RXBUFFER_8192)) |
1125ecbc | 594 | pba -= 8; /* allocate more FIFO for Tx */ |
2d7edb92 MC |
595 | |
596 | ||
96838a40 | 597 | if (adapter->hw.mac_type == e1000_82547) { |
1da177e4 LT |
598 | adapter->tx_fifo_head = 0; |
599 | adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; | |
600 | adapter->tx_fifo_size = | |
601 | (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; | |
602 | atomic_set(&adapter->tx_fifo_stall, 0); | |
603 | } | |
2d7edb92 | 604 | |
1da177e4 LT |
605 | E1000_WRITE_REG(&adapter->hw, PBA, pba); |
606 | ||
607 | /* flow control settings */ | |
f11b7f85 JK |
608 | /* Set the FC high water mark to 90% of the FIFO size. |
609 | * Required to clear last 3 LSB */ | |
610 | fc_high_water_mark = ((pba * 9216)/10) & 0xFFF8; | |
611 | ||
612 | adapter->hw.fc_high_water = fc_high_water_mark; | |
613 | adapter->hw.fc_low_water = fc_high_water_mark - 8; | |
87041639 JK |
614 | if (adapter->hw.mac_type == e1000_80003es2lan) |
615 | adapter->hw.fc_pause_time = 0xFFFF; | |
616 | else | |
617 | adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME; | |
1da177e4 LT |
618 | adapter->hw.fc_send_xon = 1; |
619 | adapter->hw.fc = adapter->hw.original_fc; | |
620 | ||
2d7edb92 | 621 | /* Allow time for pending master requests to run */ |
1da177e4 | 622 | e1000_reset_hw(&adapter->hw); |
96838a40 | 623 | if (adapter->hw.mac_type >= e1000_82544) |
1da177e4 | 624 | E1000_WRITE_REG(&adapter->hw, WUC, 0); |
96838a40 | 625 | if (e1000_init_hw(&adapter->hw)) |
1da177e4 | 626 | DPRINTK(PROBE, ERR, "Hardware Error\n"); |
2d7edb92 | 627 | e1000_update_mng_vlan(adapter); |
1da177e4 LT |
628 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
629 | E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE); | |
630 | ||
631 | e1000_reset_adaptive(&adapter->hw); | |
632 | e1000_phy_get_info(&adapter->hw, &adapter->phy_info); | |
2d7edb92 MC |
633 | if (adapter->en_mng_pt) { |
634 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
635 | manc |= (E1000_MANC_ARP_EN | E1000_MANC_EN_MNG2HOST); | |
636 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
637 | } | |
1da177e4 LT |
638 | } |
639 | ||
640 | /** | |
641 | * e1000_probe - Device Initialization Routine | |
642 | * @pdev: PCI device information struct | |
643 | * @ent: entry in e1000_pci_tbl | |
644 | * | |
645 | * Returns 0 on success, negative on failure | |
646 | * | |
647 | * e1000_probe initializes an adapter identified by a pci_dev structure. | |
648 | * The OS initialization, configuring of the adapter private structure, | |
649 | * and a hardware reset occur. | |
650 | **/ | |
651 | ||
652 | static int __devinit | |
653 | e1000_probe(struct pci_dev *pdev, | |
654 | const struct pci_device_id *ent) | |
655 | { | |
656 | struct net_device *netdev; | |
657 | struct e1000_adapter *adapter; | |
2d7edb92 | 658 | unsigned long mmio_start, mmio_len; |
2d7edb92 | 659 | |
1da177e4 | 660 | static int cards_found = 0; |
84916829 | 661 | static int e1000_ksp3_port_a = 0; /* global ksp3 port a indication */ |
2d7edb92 | 662 | int i, err, pci_using_dac; |
1da177e4 LT |
663 | uint16_t eeprom_data; |
664 | uint16_t eeprom_apme_mask = E1000_EEPROM_APME; | |
96838a40 | 665 | if ((err = pci_enable_device(pdev))) |
1da177e4 LT |
666 | return err; |
667 | ||
96838a40 | 668 | if (!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) { |
1da177e4 LT |
669 | pci_using_dac = 1; |
670 | } else { | |
96838a40 | 671 | if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK))) { |
1da177e4 LT |
672 | E1000_ERR("No usable DMA configuration, aborting\n"); |
673 | return err; | |
674 | } | |
675 | pci_using_dac = 0; | |
676 | } | |
677 | ||
96838a40 | 678 | if ((err = pci_request_regions(pdev, e1000_driver_name))) |
1da177e4 LT |
679 | return err; |
680 | ||
681 | pci_set_master(pdev); | |
682 | ||
683 | netdev = alloc_etherdev(sizeof(struct e1000_adapter)); | |
96838a40 | 684 | if (!netdev) { |
1da177e4 LT |
685 | err = -ENOMEM; |
686 | goto err_alloc_etherdev; | |
687 | } | |
688 | ||
689 | SET_MODULE_OWNER(netdev); | |
690 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
691 | ||
692 | pci_set_drvdata(pdev, netdev); | |
60490fe0 | 693 | adapter = netdev_priv(netdev); |
1da177e4 LT |
694 | adapter->netdev = netdev; |
695 | adapter->pdev = pdev; | |
696 | adapter->hw.back = adapter; | |
697 | adapter->msg_enable = (1 << debug) - 1; | |
698 | ||
699 | mmio_start = pci_resource_start(pdev, BAR_0); | |
700 | mmio_len = pci_resource_len(pdev, BAR_0); | |
701 | ||
702 | adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); | |
96838a40 | 703 | if (!adapter->hw.hw_addr) { |
1da177e4 LT |
704 | err = -EIO; |
705 | goto err_ioremap; | |
706 | } | |
707 | ||
96838a40 JB |
708 | for (i = BAR_1; i <= BAR_5; i++) { |
709 | if (pci_resource_len(pdev, i) == 0) | |
1da177e4 | 710 | continue; |
96838a40 | 711 | if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { |
1da177e4 LT |
712 | adapter->hw.io_base = pci_resource_start(pdev, i); |
713 | break; | |
714 | } | |
715 | } | |
716 | ||
717 | netdev->open = &e1000_open; | |
718 | netdev->stop = &e1000_close; | |
719 | netdev->hard_start_xmit = &e1000_xmit_frame; | |
720 | netdev->get_stats = &e1000_get_stats; | |
721 | netdev->set_multicast_list = &e1000_set_multi; | |
722 | netdev->set_mac_address = &e1000_set_mac; | |
723 | netdev->change_mtu = &e1000_change_mtu; | |
724 | netdev->do_ioctl = &e1000_ioctl; | |
725 | e1000_set_ethtool_ops(netdev); | |
726 | netdev->tx_timeout = &e1000_tx_timeout; | |
727 | netdev->watchdog_timeo = 5 * HZ; | |
728 | #ifdef CONFIG_E1000_NAPI | |
729 | netdev->poll = &e1000_clean; | |
730 | netdev->weight = 64; | |
731 | #endif | |
732 | netdev->vlan_rx_register = e1000_vlan_rx_register; | |
733 | netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid; | |
734 | netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid; | |
735 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
736 | netdev->poll_controller = e1000_netpoll; | |
737 | #endif | |
738 | strcpy(netdev->name, pci_name(pdev)); | |
739 | ||
740 | netdev->mem_start = mmio_start; | |
741 | netdev->mem_end = mmio_start + mmio_len; | |
742 | netdev->base_addr = adapter->hw.io_base; | |
743 | ||
744 | adapter->bd_number = cards_found; | |
745 | ||
746 | /* setup the private structure */ | |
747 | ||
96838a40 | 748 | if ((err = e1000_sw_init(adapter))) |
1da177e4 LT |
749 | goto err_sw_init; |
750 | ||
96838a40 | 751 | if ((err = e1000_check_phy_reset_block(&adapter->hw))) |
2d7edb92 MC |
752 | DPRINTK(PROBE, INFO, "PHY reset is blocked due to SOL/IDER session.\n"); |
753 | ||
84916829 JK |
754 | /* if ksp3, indicate if it's port a being setup */ |
755 | if (pdev->device == E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3 && | |
756 | e1000_ksp3_port_a == 0) | |
757 | adapter->ksp3_port_a = 1; | |
758 | e1000_ksp3_port_a++; | |
759 | /* Reset for multiple KP3 adapters */ | |
760 | if (e1000_ksp3_port_a == 4) | |
761 | e1000_ksp3_port_a = 0; | |
762 | ||
96838a40 | 763 | if (adapter->hw.mac_type >= e1000_82543) { |
1da177e4 LT |
764 | netdev->features = NETIF_F_SG | |
765 | NETIF_F_HW_CSUM | | |
766 | NETIF_F_HW_VLAN_TX | | |
767 | NETIF_F_HW_VLAN_RX | | |
768 | NETIF_F_HW_VLAN_FILTER; | |
769 | } | |
770 | ||
771 | #ifdef NETIF_F_TSO | |
96838a40 | 772 | if ((adapter->hw.mac_type >= e1000_82544) && |
1da177e4 LT |
773 | (adapter->hw.mac_type != e1000_82547)) |
774 | netdev->features |= NETIF_F_TSO; | |
2d7edb92 MC |
775 | |
776 | #ifdef NETIF_F_TSO_IPV6 | |
96838a40 | 777 | if (adapter->hw.mac_type > e1000_82547_rev_2) |
2d7edb92 MC |
778 | netdev->features |= NETIF_F_TSO_IPV6; |
779 | #endif | |
1da177e4 | 780 | #endif |
96838a40 | 781 | if (pci_using_dac) |
1da177e4 LT |
782 | netdev->features |= NETIF_F_HIGHDMA; |
783 | ||
784 | /* hard_start_xmit is safe against parallel locking */ | |
785 | netdev->features |= NETIF_F_LLTX; | |
786 | ||
2d7edb92 MC |
787 | adapter->en_mng_pt = e1000_enable_mng_pass_thru(&adapter->hw); |
788 | ||
96838a40 | 789 | /* before reading the EEPROM, reset the controller to |
1da177e4 | 790 | * put the device in a known good starting state */ |
96838a40 | 791 | |
1da177e4 LT |
792 | e1000_reset_hw(&adapter->hw); |
793 | ||
794 | /* make sure the EEPROM is good */ | |
795 | ||
96838a40 | 796 | if (e1000_validate_eeprom_checksum(&adapter->hw) < 0) { |
1da177e4 LT |
797 | DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n"); |
798 | err = -EIO; | |
799 | goto err_eeprom; | |
800 | } | |
801 | ||
802 | /* copy the MAC address out of the EEPROM */ | |
803 | ||
96838a40 | 804 | if (e1000_read_mac_addr(&adapter->hw)) |
1da177e4 LT |
805 | DPRINTK(PROBE, ERR, "EEPROM Read Error\n"); |
806 | memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); | |
9beb0ac1 | 807 | memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len); |
1da177e4 | 808 | |
96838a40 | 809 | if (!is_valid_ether_addr(netdev->perm_addr)) { |
1da177e4 LT |
810 | DPRINTK(PROBE, ERR, "Invalid MAC Address\n"); |
811 | err = -EIO; | |
812 | goto err_eeprom; | |
813 | } | |
814 | ||
815 | e1000_read_part_num(&adapter->hw, &(adapter->part_num)); | |
816 | ||
817 | e1000_get_bus_info(&adapter->hw); | |
818 | ||
819 | init_timer(&adapter->tx_fifo_stall_timer); | |
820 | adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall; | |
821 | adapter->tx_fifo_stall_timer.data = (unsigned long) adapter; | |
822 | ||
823 | init_timer(&adapter->watchdog_timer); | |
824 | adapter->watchdog_timer.function = &e1000_watchdog; | |
825 | adapter->watchdog_timer.data = (unsigned long) adapter; | |
826 | ||
827 | INIT_WORK(&adapter->watchdog_task, | |
828 | (void (*)(void *))e1000_watchdog_task, adapter); | |
829 | ||
830 | init_timer(&adapter->phy_info_timer); | |
831 | adapter->phy_info_timer.function = &e1000_update_phy_info; | |
832 | adapter->phy_info_timer.data = (unsigned long) adapter; | |
833 | ||
87041639 JK |
834 | INIT_WORK(&adapter->reset_task, |
835 | (void (*)(void *))e1000_reset_task, netdev); | |
1da177e4 LT |
836 | |
837 | /* we're going to reset, so assume we have no link for now */ | |
838 | ||
839 | netif_carrier_off(netdev); | |
840 | netif_stop_queue(netdev); | |
841 | ||
842 | e1000_check_options(adapter); | |
843 | ||
844 | /* Initial Wake on LAN setting | |
845 | * If APM wake is enabled in the EEPROM, | |
846 | * enable the ACPI Magic Packet filter | |
847 | */ | |
848 | ||
96838a40 | 849 | switch (adapter->hw.mac_type) { |
1da177e4 LT |
850 | case e1000_82542_rev2_0: |
851 | case e1000_82542_rev2_1: | |
852 | case e1000_82543: | |
853 | break; | |
854 | case e1000_82544: | |
855 | e1000_read_eeprom(&adapter->hw, | |
856 | EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); | |
857 | eeprom_apme_mask = E1000_EEPROM_82544_APM; | |
858 | break; | |
859 | case e1000_82546: | |
860 | case e1000_82546_rev_3: | |
fd803241 | 861 | case e1000_82571: |
6418ecc6 | 862 | case e1000_80003es2lan: |
96838a40 | 863 | if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1){ |
1da177e4 LT |
864 | e1000_read_eeprom(&adapter->hw, |
865 | EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); | |
866 | break; | |
867 | } | |
868 | /* Fall Through */ | |
869 | default: | |
870 | e1000_read_eeprom(&adapter->hw, | |
871 | EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); | |
872 | break; | |
873 | } | |
96838a40 | 874 | if (eeprom_data & eeprom_apme_mask) |
1da177e4 LT |
875 | adapter->wol |= E1000_WUFC_MAG; |
876 | ||
fb3d47d4 JK |
877 | /* print bus type/speed/width info */ |
878 | { | |
879 | struct e1000_hw *hw = &adapter->hw; | |
880 | DPRINTK(PROBE, INFO, "(PCI%s:%s:%s) ", | |
881 | ((hw->bus_type == e1000_bus_type_pcix) ? "-X" : | |
882 | (hw->bus_type == e1000_bus_type_pci_express ? " Express":"")), | |
883 | ((hw->bus_speed == e1000_bus_speed_2500) ? "2.5Gb/s" : | |
884 | (hw->bus_speed == e1000_bus_speed_133) ? "133MHz" : | |
885 | (hw->bus_speed == e1000_bus_speed_120) ? "120MHz" : | |
886 | (hw->bus_speed == e1000_bus_speed_100) ? "100MHz" : | |
887 | (hw->bus_speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"), | |
888 | ((hw->bus_width == e1000_bus_width_64) ? "64-bit" : | |
889 | (hw->bus_width == e1000_bus_width_pciex_4) ? "Width x4" : | |
890 | (hw->bus_width == e1000_bus_width_pciex_1) ? "Width x1" : | |
891 | "32-bit")); | |
892 | } | |
893 | ||
894 | for (i = 0; i < 6; i++) | |
895 | printk("%2.2x%c", netdev->dev_addr[i], i == 5 ? '\n' : ':'); | |
896 | ||
1da177e4 LT |
897 | /* reset the hardware with the new settings */ |
898 | e1000_reset(adapter); | |
899 | ||
b55ccb35 JK |
900 | /* If the controller is 82573 and f/w is AMT, do not set |
901 | * DRV_LOAD until the interface is up. For all other cases, | |
902 | * let the f/w know that the h/w is now under the control | |
903 | * of the driver. */ | |
904 | if (adapter->hw.mac_type != e1000_82573 || | |
905 | !e1000_check_mng_mode(&adapter->hw)) | |
906 | e1000_get_hw_control(adapter); | |
2d7edb92 | 907 | |
1da177e4 | 908 | strcpy(netdev->name, "eth%d"); |
96838a40 | 909 | if ((err = register_netdev(netdev))) |
1da177e4 LT |
910 | goto err_register; |
911 | ||
912 | DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n"); | |
913 | ||
914 | cards_found++; | |
915 | return 0; | |
916 | ||
917 | err_register: | |
918 | err_sw_init: | |
919 | err_eeprom: | |
920 | iounmap(adapter->hw.hw_addr); | |
921 | err_ioremap: | |
922 | free_netdev(netdev); | |
923 | err_alloc_etherdev: | |
924 | pci_release_regions(pdev); | |
925 | return err; | |
926 | } | |
927 | ||
928 | /** | |
929 | * e1000_remove - Device Removal Routine | |
930 | * @pdev: PCI device information struct | |
931 | * | |
932 | * e1000_remove is called by the PCI subsystem to alert the driver | |
933 | * that it should release a PCI device. The could be caused by a | |
934 | * Hot-Plug event, or because the driver is going to be removed from | |
935 | * memory. | |
936 | **/ | |
937 | ||
938 | static void __devexit | |
939 | e1000_remove(struct pci_dev *pdev) | |
940 | { | |
941 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 942 | struct e1000_adapter *adapter = netdev_priv(netdev); |
b55ccb35 | 943 | uint32_t manc; |
581d708e MC |
944 | #ifdef CONFIG_E1000_NAPI |
945 | int i; | |
946 | #endif | |
1da177e4 | 947 | |
be2b28ed JG |
948 | flush_scheduled_work(); |
949 | ||
96838a40 | 950 | if (adapter->hw.mac_type >= e1000_82540 && |
1da177e4 LT |
951 | adapter->hw.media_type == e1000_media_type_copper) { |
952 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
96838a40 | 953 | if (manc & E1000_MANC_SMBUS_EN) { |
1da177e4 LT |
954 | manc |= E1000_MANC_ARP_EN; |
955 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
956 | } | |
957 | } | |
958 | ||
b55ccb35 JK |
959 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
960 | * would have already happened in close and is redundant. */ | |
961 | e1000_release_hw_control(adapter); | |
2d7edb92 | 962 | |
1da177e4 | 963 | unregister_netdev(netdev); |
581d708e | 964 | #ifdef CONFIG_E1000_NAPI |
f56799ea | 965 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e MC |
966 | __dev_put(&adapter->polling_netdev[i]); |
967 | #endif | |
1da177e4 | 968 | |
96838a40 | 969 | if (!e1000_check_phy_reset_block(&adapter->hw)) |
2d7edb92 | 970 | e1000_phy_hw_reset(&adapter->hw); |
1da177e4 | 971 | |
24025e4e MC |
972 | kfree(adapter->tx_ring); |
973 | kfree(adapter->rx_ring); | |
974 | #ifdef CONFIG_E1000_NAPI | |
975 | kfree(adapter->polling_netdev); | |
976 | #endif | |
977 | ||
1da177e4 LT |
978 | iounmap(adapter->hw.hw_addr); |
979 | pci_release_regions(pdev); | |
980 | ||
981 | free_netdev(netdev); | |
982 | ||
983 | pci_disable_device(pdev); | |
984 | } | |
985 | ||
986 | /** | |
987 | * e1000_sw_init - Initialize general software structures (struct e1000_adapter) | |
988 | * @adapter: board private structure to initialize | |
989 | * | |
990 | * e1000_sw_init initializes the Adapter private data structure. | |
991 | * Fields are initialized based on PCI device information and | |
992 | * OS network device settings (MTU size). | |
993 | **/ | |
994 | ||
995 | static int __devinit | |
996 | e1000_sw_init(struct e1000_adapter *adapter) | |
997 | { | |
998 | struct e1000_hw *hw = &adapter->hw; | |
999 | struct net_device *netdev = adapter->netdev; | |
1000 | struct pci_dev *pdev = adapter->pdev; | |
581d708e MC |
1001 | #ifdef CONFIG_E1000_NAPI |
1002 | int i; | |
1003 | #endif | |
1da177e4 LT |
1004 | |
1005 | /* PCI config space info */ | |
1006 | ||
1007 | hw->vendor_id = pdev->vendor; | |
1008 | hw->device_id = pdev->device; | |
1009 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
1010 | hw->subsystem_id = pdev->subsystem_device; | |
1011 | ||
1012 | pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); | |
1013 | ||
1014 | pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); | |
1015 | ||
1016 | adapter->rx_buffer_len = E1000_RXBUFFER_2048; | |
2d7edb92 | 1017 | adapter->rx_ps_bsize0 = E1000_RXBUFFER_256; |
1da177e4 LT |
1018 | hw->max_frame_size = netdev->mtu + |
1019 | ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; | |
1020 | hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; | |
1021 | ||
1022 | /* identify the MAC */ | |
1023 | ||
96838a40 | 1024 | if (e1000_set_mac_type(hw)) { |
1da177e4 LT |
1025 | DPRINTK(PROBE, ERR, "Unknown MAC Type\n"); |
1026 | return -EIO; | |
1027 | } | |
1028 | ||
1029 | /* initialize eeprom parameters */ | |
1030 | ||
96838a40 | 1031 | if (e1000_init_eeprom_params(hw)) { |
2d7edb92 MC |
1032 | E1000_ERR("EEPROM initialization failed\n"); |
1033 | return -EIO; | |
1034 | } | |
1da177e4 | 1035 | |
96838a40 | 1036 | switch (hw->mac_type) { |
1da177e4 LT |
1037 | default: |
1038 | break; | |
1039 | case e1000_82541: | |
1040 | case e1000_82547: | |
1041 | case e1000_82541_rev_2: | |
1042 | case e1000_82547_rev_2: | |
1043 | hw->phy_init_script = 1; | |
1044 | break; | |
1045 | } | |
1046 | ||
1047 | e1000_set_media_type(hw); | |
1048 | ||
1049 | hw->wait_autoneg_complete = FALSE; | |
1050 | hw->tbi_compatibility_en = TRUE; | |
1051 | hw->adaptive_ifs = TRUE; | |
1052 | ||
1053 | /* Copper options */ | |
1054 | ||
96838a40 | 1055 | if (hw->media_type == e1000_media_type_copper) { |
1da177e4 LT |
1056 | hw->mdix = AUTO_ALL_MODES; |
1057 | hw->disable_polarity_correction = FALSE; | |
1058 | hw->master_slave = E1000_MASTER_SLAVE; | |
1059 | } | |
1060 | ||
f56799ea JK |
1061 | adapter->num_tx_queues = 1; |
1062 | adapter->num_rx_queues = 1; | |
581d708e MC |
1063 | |
1064 | if (e1000_alloc_queues(adapter)) { | |
1065 | DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n"); | |
1066 | return -ENOMEM; | |
1067 | } | |
1068 | ||
1069 | #ifdef CONFIG_E1000_NAPI | |
f56799ea | 1070 | for (i = 0; i < adapter->num_rx_queues; i++) { |
581d708e MC |
1071 | adapter->polling_netdev[i].priv = adapter; |
1072 | adapter->polling_netdev[i].poll = &e1000_clean; | |
1073 | adapter->polling_netdev[i].weight = 64; | |
1074 | dev_hold(&adapter->polling_netdev[i]); | |
1075 | set_bit(__LINK_STATE_START, &adapter->polling_netdev[i].state); | |
1076 | } | |
7bfa4816 | 1077 | spin_lock_init(&adapter->tx_queue_lock); |
24025e4e MC |
1078 | #endif |
1079 | ||
1da177e4 LT |
1080 | atomic_set(&adapter->irq_sem, 1); |
1081 | spin_lock_init(&adapter->stats_lock); | |
1da177e4 LT |
1082 | |
1083 | return 0; | |
1084 | } | |
1085 | ||
581d708e MC |
1086 | /** |
1087 | * e1000_alloc_queues - Allocate memory for all rings | |
1088 | * @adapter: board private structure to initialize | |
1089 | * | |
1090 | * We allocate one ring per queue at run-time since we don't know the | |
1091 | * number of queues at compile-time. The polling_netdev array is | |
1092 | * intended for Multiqueue, but should work fine with a single queue. | |
1093 | **/ | |
1094 | ||
1095 | static int __devinit | |
1096 | e1000_alloc_queues(struct e1000_adapter *adapter) | |
1097 | { | |
1098 | int size; | |
1099 | ||
f56799ea | 1100 | size = sizeof(struct e1000_tx_ring) * adapter->num_tx_queues; |
581d708e MC |
1101 | adapter->tx_ring = kmalloc(size, GFP_KERNEL); |
1102 | if (!adapter->tx_ring) | |
1103 | return -ENOMEM; | |
1104 | memset(adapter->tx_ring, 0, size); | |
1105 | ||
f56799ea | 1106 | size = sizeof(struct e1000_rx_ring) * adapter->num_rx_queues; |
581d708e MC |
1107 | adapter->rx_ring = kmalloc(size, GFP_KERNEL); |
1108 | if (!adapter->rx_ring) { | |
1109 | kfree(adapter->tx_ring); | |
1110 | return -ENOMEM; | |
1111 | } | |
1112 | memset(adapter->rx_ring, 0, size); | |
1113 | ||
1114 | #ifdef CONFIG_E1000_NAPI | |
f56799ea | 1115 | size = sizeof(struct net_device) * adapter->num_rx_queues; |
581d708e MC |
1116 | adapter->polling_netdev = kmalloc(size, GFP_KERNEL); |
1117 | if (!adapter->polling_netdev) { | |
1118 | kfree(adapter->tx_ring); | |
1119 | kfree(adapter->rx_ring); | |
1120 | return -ENOMEM; | |
1121 | } | |
1122 | memset(adapter->polling_netdev, 0, size); | |
1123 | #endif | |
1124 | ||
1125 | return E1000_SUCCESS; | |
1126 | } | |
1127 | ||
1da177e4 LT |
1128 | /** |
1129 | * e1000_open - Called when a network interface is made active | |
1130 | * @netdev: network interface device structure | |
1131 | * | |
1132 | * Returns 0 on success, negative value on failure | |
1133 | * | |
1134 | * The open entry point is called when a network interface is made | |
1135 | * active by the system (IFF_UP). At this point all resources needed | |
1136 | * for transmit and receive operations are allocated, the interrupt | |
1137 | * handler is registered with the OS, the watchdog timer is started, | |
1138 | * and the stack is notified that the interface is ready. | |
1139 | **/ | |
1140 | ||
1141 | static int | |
1142 | e1000_open(struct net_device *netdev) | |
1143 | { | |
60490fe0 | 1144 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1145 | int err; |
1146 | ||
1147 | /* allocate transmit descriptors */ | |
1148 | ||
581d708e | 1149 | if ((err = e1000_setup_all_tx_resources(adapter))) |
1da177e4 LT |
1150 | goto err_setup_tx; |
1151 | ||
1152 | /* allocate receive descriptors */ | |
1153 | ||
581d708e | 1154 | if ((err = e1000_setup_all_rx_resources(adapter))) |
1da177e4 LT |
1155 | goto err_setup_rx; |
1156 | ||
96838a40 | 1157 | if ((err = e1000_up(adapter))) |
1da177e4 | 1158 | goto err_up; |
2d7edb92 | 1159 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
96838a40 | 1160 | if ((adapter->hw.mng_cookie.status & |
2d7edb92 MC |
1161 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { |
1162 | e1000_update_mng_vlan(adapter); | |
1163 | } | |
1da177e4 | 1164 | |
b55ccb35 JK |
1165 | /* If AMT is enabled, let the firmware know that the network |
1166 | * interface is now open */ | |
1167 | if (adapter->hw.mac_type == e1000_82573 && | |
1168 | e1000_check_mng_mode(&adapter->hw)) | |
1169 | e1000_get_hw_control(adapter); | |
1170 | ||
1da177e4 LT |
1171 | return E1000_SUCCESS; |
1172 | ||
1173 | err_up: | |
581d708e | 1174 | e1000_free_all_rx_resources(adapter); |
1da177e4 | 1175 | err_setup_rx: |
581d708e | 1176 | e1000_free_all_tx_resources(adapter); |
1da177e4 LT |
1177 | err_setup_tx: |
1178 | e1000_reset(adapter); | |
1179 | ||
1180 | return err; | |
1181 | } | |
1182 | ||
1183 | /** | |
1184 | * e1000_close - Disables a network interface | |
1185 | * @netdev: network interface device structure | |
1186 | * | |
1187 | * Returns 0, this is not allowed to fail | |
1188 | * | |
1189 | * The close entry point is called when an interface is de-activated | |
1190 | * by the OS. The hardware is still under the drivers control, but | |
1191 | * needs to be disabled. A global MAC reset is issued to stop the | |
1192 | * hardware, and all transmit and receive resources are freed. | |
1193 | **/ | |
1194 | ||
1195 | static int | |
1196 | e1000_close(struct net_device *netdev) | |
1197 | { | |
60490fe0 | 1198 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1199 | |
1200 | e1000_down(adapter); | |
1201 | ||
581d708e MC |
1202 | e1000_free_all_tx_resources(adapter); |
1203 | e1000_free_all_rx_resources(adapter); | |
1da177e4 | 1204 | |
96838a40 | 1205 | if ((adapter->hw.mng_cookie.status & |
2d7edb92 MC |
1206 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { |
1207 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); | |
1208 | } | |
b55ccb35 JK |
1209 | |
1210 | /* If AMT is enabled, let the firmware know that the network | |
1211 | * interface is now closed */ | |
1212 | if (adapter->hw.mac_type == e1000_82573 && | |
1213 | e1000_check_mng_mode(&adapter->hw)) | |
1214 | e1000_release_hw_control(adapter); | |
1215 | ||
1da177e4 LT |
1216 | return 0; |
1217 | } | |
1218 | ||
1219 | /** | |
1220 | * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary | |
1221 | * @adapter: address of board private structure | |
2d7edb92 MC |
1222 | * @start: address of beginning of memory |
1223 | * @len: length of memory | |
1da177e4 LT |
1224 | **/ |
1225 | static inline boolean_t | |
1226 | e1000_check_64k_bound(struct e1000_adapter *adapter, | |
1227 | void *start, unsigned long len) | |
1228 | { | |
1229 | unsigned long begin = (unsigned long) start; | |
1230 | unsigned long end = begin + len; | |
1231 | ||
2648345f MC |
1232 | /* First rev 82545 and 82546 need to not allow any memory |
1233 | * write location to cross 64k boundary due to errata 23 */ | |
1da177e4 | 1234 | if (adapter->hw.mac_type == e1000_82545 || |
2648345f | 1235 | adapter->hw.mac_type == e1000_82546) { |
1da177e4 LT |
1236 | return ((begin ^ (end - 1)) >> 16) != 0 ? FALSE : TRUE; |
1237 | } | |
1238 | ||
1239 | return TRUE; | |
1240 | } | |
1241 | ||
1242 | /** | |
1243 | * e1000_setup_tx_resources - allocate Tx resources (Descriptors) | |
1244 | * @adapter: board private structure | |
581d708e | 1245 | * @txdr: tx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1246 | * |
1247 | * Return 0 on success, negative on failure | |
1248 | **/ | |
1249 | ||
3ad2cc67 | 1250 | static int |
581d708e MC |
1251 | e1000_setup_tx_resources(struct e1000_adapter *adapter, |
1252 | struct e1000_tx_ring *txdr) | |
1da177e4 | 1253 | { |
1da177e4 LT |
1254 | struct pci_dev *pdev = adapter->pdev; |
1255 | int size; | |
1256 | ||
1257 | size = sizeof(struct e1000_buffer) * txdr->count; | |
a7ec15da RT |
1258 | |
1259 | txdr->buffer_info = vmalloc_node(size, pcibus_to_node(pdev->bus)); | |
96838a40 | 1260 | if (!txdr->buffer_info) { |
2648345f MC |
1261 | DPRINTK(PROBE, ERR, |
1262 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1da177e4 LT |
1263 | return -ENOMEM; |
1264 | } | |
1265 | memset(txdr->buffer_info, 0, size); | |
1266 | ||
1267 | /* round up to nearest 4K */ | |
1268 | ||
1269 | txdr->size = txdr->count * sizeof(struct e1000_tx_desc); | |
1270 | E1000_ROUNDUP(txdr->size, 4096); | |
1271 | ||
1272 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); | |
96838a40 | 1273 | if (!txdr->desc) { |
1da177e4 | 1274 | setup_tx_desc_die: |
1da177e4 | 1275 | vfree(txdr->buffer_info); |
2648345f MC |
1276 | DPRINTK(PROBE, ERR, |
1277 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1da177e4 LT |
1278 | return -ENOMEM; |
1279 | } | |
1280 | ||
2648345f | 1281 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1282 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
1283 | void *olddesc = txdr->desc; | |
1284 | dma_addr_t olddma = txdr->dma; | |
2648345f MC |
1285 | DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes " |
1286 | "at %p\n", txdr->size, txdr->desc); | |
1287 | /* Try again, without freeing the previous */ | |
1da177e4 | 1288 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); |
2648345f | 1289 | /* Failed allocation, critical failure */ |
96838a40 | 1290 | if (!txdr->desc) { |
1da177e4 LT |
1291 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1292 | goto setup_tx_desc_die; | |
1293 | } | |
1294 | ||
1295 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { | |
1296 | /* give up */ | |
2648345f MC |
1297 | pci_free_consistent(pdev, txdr->size, txdr->desc, |
1298 | txdr->dma); | |
1da177e4 LT |
1299 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1300 | DPRINTK(PROBE, ERR, | |
2648345f MC |
1301 | "Unable to allocate aligned memory " |
1302 | "for the transmit descriptor ring\n"); | |
1da177e4 LT |
1303 | vfree(txdr->buffer_info); |
1304 | return -ENOMEM; | |
1305 | } else { | |
2648345f | 1306 | /* Free old allocation, new allocation was successful */ |
1da177e4 LT |
1307 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1308 | } | |
1309 | } | |
1310 | memset(txdr->desc, 0, txdr->size); | |
1311 | ||
1312 | txdr->next_to_use = 0; | |
1313 | txdr->next_to_clean = 0; | |
2ae76d98 | 1314 | spin_lock_init(&txdr->tx_lock); |
1da177e4 LT |
1315 | |
1316 | return 0; | |
1317 | } | |
1318 | ||
581d708e MC |
1319 | /** |
1320 | * e1000_setup_all_tx_resources - wrapper to allocate Tx resources | |
1321 | * (Descriptors) for all queues | |
1322 | * @adapter: board private structure | |
1323 | * | |
1324 | * If this function returns with an error, then it's possible one or | |
1325 | * more of the rings is populated (while the rest are not). It is the | |
1326 | * callers duty to clean those orphaned rings. | |
1327 | * | |
1328 | * Return 0 on success, negative on failure | |
1329 | **/ | |
1330 | ||
1331 | int | |
1332 | e1000_setup_all_tx_resources(struct e1000_adapter *adapter) | |
1333 | { | |
1334 | int i, err = 0; | |
1335 | ||
f56799ea | 1336 | for (i = 0; i < adapter->num_tx_queues; i++) { |
581d708e MC |
1337 | err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
1338 | if (err) { | |
1339 | DPRINTK(PROBE, ERR, | |
1340 | "Allocation for Tx Queue %u failed\n", i); | |
1341 | break; | |
1342 | } | |
1343 | } | |
1344 | ||
1345 | return err; | |
1346 | } | |
1347 | ||
1da177e4 LT |
1348 | /** |
1349 | * e1000_configure_tx - Configure 8254x Transmit Unit after Reset | |
1350 | * @adapter: board private structure | |
1351 | * | |
1352 | * Configure the Tx unit of the MAC after a reset. | |
1353 | **/ | |
1354 | ||
1355 | static void | |
1356 | e1000_configure_tx(struct e1000_adapter *adapter) | |
1357 | { | |
581d708e MC |
1358 | uint64_t tdba; |
1359 | struct e1000_hw *hw = &adapter->hw; | |
1360 | uint32_t tdlen, tctl, tipg, tarc; | |
0fadb059 | 1361 | uint32_t ipgr1, ipgr2; |
1da177e4 LT |
1362 | |
1363 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1364 | ||
f56799ea | 1365 | switch (adapter->num_tx_queues) { |
24025e4e MC |
1366 | case 1: |
1367 | default: | |
581d708e MC |
1368 | tdba = adapter->tx_ring[0].dma; |
1369 | tdlen = adapter->tx_ring[0].count * | |
1370 | sizeof(struct e1000_tx_desc); | |
1371 | E1000_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL)); | |
1372 | E1000_WRITE_REG(hw, TDBAH, (tdba >> 32)); | |
1373 | E1000_WRITE_REG(hw, TDLEN, tdlen); | |
1374 | E1000_WRITE_REG(hw, TDH, 0); | |
1375 | E1000_WRITE_REG(hw, TDT, 0); | |
1376 | adapter->tx_ring[0].tdh = E1000_TDH; | |
1377 | adapter->tx_ring[0].tdt = E1000_TDT; | |
24025e4e MC |
1378 | break; |
1379 | } | |
1da177e4 LT |
1380 | |
1381 | /* Set the default values for the Tx Inter Packet Gap timer */ | |
1382 | ||
0fadb059 JK |
1383 | if (hw->media_type == e1000_media_type_fiber || |
1384 | hw->media_type == e1000_media_type_internal_serdes) | |
1385 | tipg = DEFAULT_82543_TIPG_IPGT_FIBER; | |
1386 | else | |
1387 | tipg = DEFAULT_82543_TIPG_IPGT_COPPER; | |
1388 | ||
581d708e | 1389 | switch (hw->mac_type) { |
1da177e4 LT |
1390 | case e1000_82542_rev2_0: |
1391 | case e1000_82542_rev2_1: | |
1392 | tipg = DEFAULT_82542_TIPG_IPGT; | |
0fadb059 JK |
1393 | ipgr1 = DEFAULT_82542_TIPG_IPGR1; |
1394 | ipgr2 = DEFAULT_82542_TIPG_IPGR2; | |
1da177e4 | 1395 | break; |
87041639 JK |
1396 | case e1000_80003es2lan: |
1397 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; | |
1398 | ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; | |
1399 | break; | |
1da177e4 | 1400 | default: |
0fadb059 JK |
1401 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
1402 | ipgr2 = DEFAULT_82543_TIPG_IPGR2; | |
1403 | break; | |
1da177e4 | 1404 | } |
0fadb059 JK |
1405 | tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; |
1406 | tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; | |
581d708e | 1407 | E1000_WRITE_REG(hw, TIPG, tipg); |
1da177e4 LT |
1408 | |
1409 | /* Set the Tx Interrupt Delay register */ | |
1410 | ||
581d708e MC |
1411 | E1000_WRITE_REG(hw, TIDV, adapter->tx_int_delay); |
1412 | if (hw->mac_type >= e1000_82540) | |
1413 | E1000_WRITE_REG(hw, TADV, adapter->tx_abs_int_delay); | |
1da177e4 LT |
1414 | |
1415 | /* Program the Transmit Control Register */ | |
1416 | ||
581d708e | 1417 | tctl = E1000_READ_REG(hw, TCTL); |
1da177e4 LT |
1418 | |
1419 | tctl &= ~E1000_TCTL_CT; | |
7e6c9861 | 1420 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | |
1da177e4 LT |
1421 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
1422 | ||
7e6c9861 JK |
1423 | #ifdef DISABLE_MULR |
1424 | /* disable Multiple Reads for debugging */ | |
1425 | tctl &= ~E1000_TCTL_MULR; | |
1426 | #endif | |
1da177e4 | 1427 | |
2ae76d98 MC |
1428 | if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) { |
1429 | tarc = E1000_READ_REG(hw, TARC0); | |
1430 | tarc |= ((1 << 25) | (1 << 21)); | |
1431 | E1000_WRITE_REG(hw, TARC0, tarc); | |
1432 | tarc = E1000_READ_REG(hw, TARC1); | |
1433 | tarc |= (1 << 25); | |
1434 | if (tctl & E1000_TCTL_MULR) | |
1435 | tarc &= ~(1 << 28); | |
1436 | else | |
1437 | tarc |= (1 << 28); | |
1438 | E1000_WRITE_REG(hw, TARC1, tarc); | |
87041639 JK |
1439 | } else if (hw->mac_type == e1000_80003es2lan) { |
1440 | tarc = E1000_READ_REG(hw, TARC0); | |
1441 | tarc |= 1; | |
1442 | if (hw->media_type == e1000_media_type_internal_serdes) | |
1443 | tarc |= (1 << 20); | |
1444 | E1000_WRITE_REG(hw, TARC0, tarc); | |
1445 | tarc = E1000_READ_REG(hw, TARC1); | |
1446 | tarc |= 1; | |
1447 | E1000_WRITE_REG(hw, TARC1, tarc); | |
2ae76d98 MC |
1448 | } |
1449 | ||
581d708e | 1450 | e1000_config_collision_dist(hw); |
1da177e4 LT |
1451 | |
1452 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
1453 | adapter->txd_cmd = E1000_TXD_CMD_IDE | E1000_TXD_CMD_EOP | | |
1454 | E1000_TXD_CMD_IFCS; | |
1455 | ||
581d708e | 1456 | if (hw->mac_type < e1000_82543) |
1da177e4 LT |
1457 | adapter->txd_cmd |= E1000_TXD_CMD_RPS; |
1458 | else | |
1459 | adapter->txd_cmd |= E1000_TXD_CMD_RS; | |
1460 | ||
1461 | /* Cache if we're 82544 running in PCI-X because we'll | |
1462 | * need this to apply a workaround later in the send path. */ | |
581d708e MC |
1463 | if (hw->mac_type == e1000_82544 && |
1464 | hw->bus_type == e1000_bus_type_pcix) | |
1da177e4 | 1465 | adapter->pcix_82544 = 1; |
7e6c9861 JK |
1466 | |
1467 | E1000_WRITE_REG(hw, TCTL, tctl); | |
1468 | ||
1da177e4 LT |
1469 | } |
1470 | ||
1471 | /** | |
1472 | * e1000_setup_rx_resources - allocate Rx resources (Descriptors) | |
1473 | * @adapter: board private structure | |
581d708e | 1474 | * @rxdr: rx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1475 | * |
1476 | * Returns 0 on success, negative on failure | |
1477 | **/ | |
1478 | ||
3ad2cc67 | 1479 | static int |
581d708e MC |
1480 | e1000_setup_rx_resources(struct e1000_adapter *adapter, |
1481 | struct e1000_rx_ring *rxdr) | |
1da177e4 | 1482 | { |
1da177e4 | 1483 | struct pci_dev *pdev = adapter->pdev; |
2d7edb92 | 1484 | int size, desc_len; |
1da177e4 LT |
1485 | |
1486 | size = sizeof(struct e1000_buffer) * rxdr->count; | |
a7ec15da | 1487 | rxdr->buffer_info = vmalloc_node(size, pcibus_to_node(pdev->bus)); |
581d708e | 1488 | if (!rxdr->buffer_info) { |
2648345f MC |
1489 | DPRINTK(PROBE, ERR, |
1490 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1da177e4 LT |
1491 | return -ENOMEM; |
1492 | } | |
1493 | memset(rxdr->buffer_info, 0, size); | |
1494 | ||
2d7edb92 MC |
1495 | size = sizeof(struct e1000_ps_page) * rxdr->count; |
1496 | rxdr->ps_page = kmalloc(size, GFP_KERNEL); | |
96838a40 | 1497 | if (!rxdr->ps_page) { |
2d7edb92 MC |
1498 | vfree(rxdr->buffer_info); |
1499 | DPRINTK(PROBE, ERR, | |
1500 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1501 | return -ENOMEM; | |
1502 | } | |
1503 | memset(rxdr->ps_page, 0, size); | |
1504 | ||
1505 | size = sizeof(struct e1000_ps_page_dma) * rxdr->count; | |
1506 | rxdr->ps_page_dma = kmalloc(size, GFP_KERNEL); | |
96838a40 | 1507 | if (!rxdr->ps_page_dma) { |
2d7edb92 MC |
1508 | vfree(rxdr->buffer_info); |
1509 | kfree(rxdr->ps_page); | |
1510 | DPRINTK(PROBE, ERR, | |
1511 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1512 | return -ENOMEM; | |
1513 | } | |
1514 | memset(rxdr->ps_page_dma, 0, size); | |
1515 | ||
96838a40 | 1516 | if (adapter->hw.mac_type <= e1000_82547_rev_2) |
2d7edb92 MC |
1517 | desc_len = sizeof(struct e1000_rx_desc); |
1518 | else | |
1519 | desc_len = sizeof(union e1000_rx_desc_packet_split); | |
1520 | ||
1da177e4 LT |
1521 | /* Round up to nearest 4K */ |
1522 | ||
2d7edb92 | 1523 | rxdr->size = rxdr->count * desc_len; |
1da177e4 LT |
1524 | E1000_ROUNDUP(rxdr->size, 4096); |
1525 | ||
1526 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); | |
1527 | ||
581d708e MC |
1528 | if (!rxdr->desc) { |
1529 | DPRINTK(PROBE, ERR, | |
1530 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1da177e4 | 1531 | setup_rx_desc_die: |
1da177e4 | 1532 | vfree(rxdr->buffer_info); |
2d7edb92 MC |
1533 | kfree(rxdr->ps_page); |
1534 | kfree(rxdr->ps_page_dma); | |
1da177e4 LT |
1535 | return -ENOMEM; |
1536 | } | |
1537 | ||
2648345f | 1538 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1539 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
1540 | void *olddesc = rxdr->desc; | |
1541 | dma_addr_t olddma = rxdr->dma; | |
2648345f MC |
1542 | DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes " |
1543 | "at %p\n", rxdr->size, rxdr->desc); | |
1544 | /* Try again, without freeing the previous */ | |
1da177e4 | 1545 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); |
2648345f | 1546 | /* Failed allocation, critical failure */ |
581d708e | 1547 | if (!rxdr->desc) { |
1da177e4 | 1548 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
581d708e MC |
1549 | DPRINTK(PROBE, ERR, |
1550 | "Unable to allocate memory " | |
1551 | "for the receive descriptor ring\n"); | |
1da177e4 LT |
1552 | goto setup_rx_desc_die; |
1553 | } | |
1554 | ||
1555 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { | |
1556 | /* give up */ | |
2648345f MC |
1557 | pci_free_consistent(pdev, rxdr->size, rxdr->desc, |
1558 | rxdr->dma); | |
1da177e4 | 1559 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
2648345f MC |
1560 | DPRINTK(PROBE, ERR, |
1561 | "Unable to allocate aligned memory " | |
1562 | "for the receive descriptor ring\n"); | |
581d708e | 1563 | goto setup_rx_desc_die; |
1da177e4 | 1564 | } else { |
2648345f | 1565 | /* Free old allocation, new allocation was successful */ |
1da177e4 LT |
1566 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
1567 | } | |
1568 | } | |
1569 | memset(rxdr->desc, 0, rxdr->size); | |
1570 | ||
1571 | rxdr->next_to_clean = 0; | |
1572 | rxdr->next_to_use = 0; | |
1573 | ||
1574 | return 0; | |
1575 | } | |
1576 | ||
581d708e MC |
1577 | /** |
1578 | * e1000_setup_all_rx_resources - wrapper to allocate Rx resources | |
1579 | * (Descriptors) for all queues | |
1580 | * @adapter: board private structure | |
1581 | * | |
1582 | * If this function returns with an error, then it's possible one or | |
1583 | * more of the rings is populated (while the rest are not). It is the | |
1584 | * callers duty to clean those orphaned rings. | |
1585 | * | |
1586 | * Return 0 on success, negative on failure | |
1587 | **/ | |
1588 | ||
1589 | int | |
1590 | e1000_setup_all_rx_resources(struct e1000_adapter *adapter) | |
1591 | { | |
1592 | int i, err = 0; | |
1593 | ||
f56799ea | 1594 | for (i = 0; i < adapter->num_rx_queues; i++) { |
581d708e MC |
1595 | err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
1596 | if (err) { | |
1597 | DPRINTK(PROBE, ERR, | |
1598 | "Allocation for Rx Queue %u failed\n", i); | |
1599 | break; | |
1600 | } | |
1601 | } | |
1602 | ||
1603 | return err; | |
1604 | } | |
1605 | ||
1da177e4 | 1606 | /** |
2648345f | 1607 | * e1000_setup_rctl - configure the receive control registers |
1da177e4 LT |
1608 | * @adapter: Board private structure |
1609 | **/ | |
e4c811c9 MC |
1610 | #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ |
1611 | (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) | |
1da177e4 LT |
1612 | static void |
1613 | e1000_setup_rctl(struct e1000_adapter *adapter) | |
1614 | { | |
2d7edb92 MC |
1615 | uint32_t rctl, rfctl; |
1616 | uint32_t psrctl = 0; | |
35ec56bb | 1617 | #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT |
e4c811c9 MC |
1618 | uint32_t pages = 0; |
1619 | #endif | |
1da177e4 LT |
1620 | |
1621 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
1622 | ||
1623 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
1624 | ||
1625 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | | |
1626 | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | | |
1627 | (adapter->hw.mc_filter_type << E1000_RCTL_MO_SHIFT); | |
1628 | ||
0fadb059 JK |
1629 | if (adapter->hw.mac_type > e1000_82543) |
1630 | rctl |= E1000_RCTL_SECRC; | |
1631 | ||
1632 | if (adapter->hw.tbi_compatibility_on == 1) | |
1da177e4 LT |
1633 | rctl |= E1000_RCTL_SBP; |
1634 | else | |
1635 | rctl &= ~E1000_RCTL_SBP; | |
1636 | ||
2d7edb92 MC |
1637 | if (adapter->netdev->mtu <= ETH_DATA_LEN) |
1638 | rctl &= ~E1000_RCTL_LPE; | |
1639 | else | |
1640 | rctl |= E1000_RCTL_LPE; | |
1641 | ||
1da177e4 | 1642 | /* Setup buffer sizes */ |
96838a40 | 1643 | if (adapter->hw.mac_type >= e1000_82571) { |
2d7edb92 MC |
1644 | /* We can now specify buffers in 1K increments. |
1645 | * BSIZE and BSEX are ignored in this case. */ | |
1646 | rctl |= adapter->rx_buffer_len << 0x11; | |
1647 | } else { | |
1648 | rctl &= ~E1000_RCTL_SZ_4096; | |
a1415ee6 JK |
1649 | rctl |= E1000_RCTL_BSEX; |
1650 | switch (adapter->rx_buffer_len) { | |
1651 | case E1000_RXBUFFER_2048: | |
1652 | default: | |
1653 | rctl |= E1000_RCTL_SZ_2048; | |
1654 | rctl &= ~E1000_RCTL_BSEX; | |
1655 | break; | |
1656 | case E1000_RXBUFFER_4096: | |
1657 | rctl |= E1000_RCTL_SZ_4096; | |
1658 | break; | |
1659 | case E1000_RXBUFFER_8192: | |
1660 | rctl |= E1000_RCTL_SZ_8192; | |
1661 | break; | |
1662 | case E1000_RXBUFFER_16384: | |
1663 | rctl |= E1000_RCTL_SZ_16384; | |
1664 | break; | |
1665 | } | |
2d7edb92 MC |
1666 | } |
1667 | ||
35ec56bb | 1668 | #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT |
2d7edb92 MC |
1669 | /* 82571 and greater support packet-split where the protocol |
1670 | * header is placed in skb->data and the packet data is | |
1671 | * placed in pages hanging off of skb_shinfo(skb)->nr_frags. | |
1672 | * In the case of a non-split, skb->data is linearly filled, | |
1673 | * followed by the page buffers. Therefore, skb->data is | |
1674 | * sized to hold the largest protocol header. | |
1675 | */ | |
e4c811c9 MC |
1676 | pages = PAGE_USE_COUNT(adapter->netdev->mtu); |
1677 | if ((adapter->hw.mac_type > e1000_82547_rev_2) && (pages <= 3) && | |
1678 | PAGE_SIZE <= 16384) | |
1679 | adapter->rx_ps_pages = pages; | |
1680 | else | |
1681 | adapter->rx_ps_pages = 0; | |
2d7edb92 | 1682 | #endif |
e4c811c9 | 1683 | if (adapter->rx_ps_pages) { |
2d7edb92 MC |
1684 | /* Configure extra packet-split registers */ |
1685 | rfctl = E1000_READ_REG(&adapter->hw, RFCTL); | |
1686 | rfctl |= E1000_RFCTL_EXTEN; | |
1687 | /* disable IPv6 packet split support */ | |
1688 | rfctl |= E1000_RFCTL_IPV6_DIS; | |
1689 | E1000_WRITE_REG(&adapter->hw, RFCTL, rfctl); | |
1690 | ||
1691 | rctl |= E1000_RCTL_DTYP_PS | E1000_RCTL_SECRC; | |
96838a40 | 1692 | |
2d7edb92 MC |
1693 | psrctl |= adapter->rx_ps_bsize0 >> |
1694 | E1000_PSRCTL_BSIZE0_SHIFT; | |
e4c811c9 MC |
1695 | |
1696 | switch (adapter->rx_ps_pages) { | |
1697 | case 3: | |
1698 | psrctl |= PAGE_SIZE << | |
1699 | E1000_PSRCTL_BSIZE3_SHIFT; | |
1700 | case 2: | |
1701 | psrctl |= PAGE_SIZE << | |
1702 | E1000_PSRCTL_BSIZE2_SHIFT; | |
1703 | case 1: | |
1704 | psrctl |= PAGE_SIZE >> | |
1705 | E1000_PSRCTL_BSIZE1_SHIFT; | |
1706 | break; | |
1707 | } | |
2d7edb92 MC |
1708 | |
1709 | E1000_WRITE_REG(&adapter->hw, PSRCTL, psrctl); | |
1da177e4 LT |
1710 | } |
1711 | ||
1712 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
1713 | } | |
1714 | ||
1715 | /** | |
1716 | * e1000_configure_rx - Configure 8254x Receive Unit after Reset | |
1717 | * @adapter: board private structure | |
1718 | * | |
1719 | * Configure the Rx unit of the MAC after a reset. | |
1720 | **/ | |
1721 | ||
1722 | static void | |
1723 | e1000_configure_rx(struct e1000_adapter *adapter) | |
1724 | { | |
581d708e MC |
1725 | uint64_t rdba; |
1726 | struct e1000_hw *hw = &adapter->hw; | |
1727 | uint32_t rdlen, rctl, rxcsum, ctrl_ext; | |
2d7edb92 | 1728 | |
e4c811c9 | 1729 | if (adapter->rx_ps_pages) { |
581d708e | 1730 | rdlen = adapter->rx_ring[0].count * |
2d7edb92 MC |
1731 | sizeof(union e1000_rx_desc_packet_split); |
1732 | adapter->clean_rx = e1000_clean_rx_irq_ps; | |
1733 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; | |
1734 | } else { | |
581d708e MC |
1735 | rdlen = adapter->rx_ring[0].count * |
1736 | sizeof(struct e1000_rx_desc); | |
2d7edb92 MC |
1737 | adapter->clean_rx = e1000_clean_rx_irq; |
1738 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers; | |
1739 | } | |
1da177e4 LT |
1740 | |
1741 | /* disable receives while setting up the descriptors */ | |
581d708e MC |
1742 | rctl = E1000_READ_REG(hw, RCTL); |
1743 | E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); | |
1da177e4 LT |
1744 | |
1745 | /* set the Receive Delay Timer Register */ | |
581d708e | 1746 | E1000_WRITE_REG(hw, RDTR, adapter->rx_int_delay); |
1da177e4 | 1747 | |
581d708e MC |
1748 | if (hw->mac_type >= e1000_82540) { |
1749 | E1000_WRITE_REG(hw, RADV, adapter->rx_abs_int_delay); | |
96838a40 | 1750 | if (adapter->itr > 1) |
581d708e | 1751 | E1000_WRITE_REG(hw, ITR, |
1da177e4 LT |
1752 | 1000000000 / (adapter->itr * 256)); |
1753 | } | |
1754 | ||
2ae76d98 | 1755 | if (hw->mac_type >= e1000_82571) { |
2ae76d98 | 1756 | ctrl_ext = E1000_READ_REG(hw, CTRL_EXT); |
1e613fd9 | 1757 | /* Reset delay timers after every interrupt */ |
2ae76d98 | 1758 | ctrl_ext |= E1000_CTRL_EXT_CANC; |
1e613fd9 JK |
1759 | #ifdef CONFIG_E1000_NAPI |
1760 | /* Auto-Mask interrupts upon ICR read. */ | |
1761 | ctrl_ext |= E1000_CTRL_EXT_IAME; | |
1762 | #endif | |
2ae76d98 | 1763 | E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); |
1e613fd9 | 1764 | E1000_WRITE_REG(hw, IAM, ~0); |
2ae76d98 MC |
1765 | E1000_WRITE_FLUSH(hw); |
1766 | } | |
1767 | ||
581d708e MC |
1768 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
1769 | * the Base and Length of the Rx Descriptor Ring */ | |
f56799ea | 1770 | switch (adapter->num_rx_queues) { |
24025e4e MC |
1771 | case 1: |
1772 | default: | |
581d708e MC |
1773 | rdba = adapter->rx_ring[0].dma; |
1774 | E1000_WRITE_REG(hw, RDBAL, (rdba & 0x00000000ffffffffULL)); | |
1775 | E1000_WRITE_REG(hw, RDBAH, (rdba >> 32)); | |
1776 | E1000_WRITE_REG(hw, RDLEN, rdlen); | |
1777 | E1000_WRITE_REG(hw, RDH, 0); | |
1778 | E1000_WRITE_REG(hw, RDT, 0); | |
1779 | adapter->rx_ring[0].rdh = E1000_RDH; | |
1780 | adapter->rx_ring[0].rdt = E1000_RDT; | |
1781 | break; | |
24025e4e MC |
1782 | } |
1783 | ||
1da177e4 | 1784 | /* Enable 82543 Receive Checksum Offload for TCP and UDP */ |
581d708e MC |
1785 | if (hw->mac_type >= e1000_82543) { |
1786 | rxcsum = E1000_READ_REG(hw, RXCSUM); | |
96838a40 | 1787 | if (adapter->rx_csum == TRUE) { |
2d7edb92 MC |
1788 | rxcsum |= E1000_RXCSUM_TUOFL; |
1789 | ||
868d5309 | 1790 | /* Enable 82571 IPv4 payload checksum for UDP fragments |
2d7edb92 | 1791 | * Must be used in conjunction with packet-split. */ |
96838a40 JB |
1792 | if ((hw->mac_type >= e1000_82571) && |
1793 | (adapter->rx_ps_pages)) { | |
2d7edb92 MC |
1794 | rxcsum |= E1000_RXCSUM_IPPCSE; |
1795 | } | |
1796 | } else { | |
1797 | rxcsum &= ~E1000_RXCSUM_TUOFL; | |
1798 | /* don't need to clear IPPCSE as it defaults to 0 */ | |
1799 | } | |
581d708e | 1800 | E1000_WRITE_REG(hw, RXCSUM, rxcsum); |
1da177e4 LT |
1801 | } |
1802 | ||
581d708e MC |
1803 | if (hw->mac_type == e1000_82573) |
1804 | E1000_WRITE_REG(hw, ERT, 0x0100); | |
2d7edb92 | 1805 | |
1da177e4 | 1806 | /* Enable Receives */ |
581d708e | 1807 | E1000_WRITE_REG(hw, RCTL, rctl); |
1da177e4 LT |
1808 | } |
1809 | ||
1810 | /** | |
581d708e | 1811 | * e1000_free_tx_resources - Free Tx Resources per Queue |
1da177e4 | 1812 | * @adapter: board private structure |
581d708e | 1813 | * @tx_ring: Tx descriptor ring for a specific queue |
1da177e4 LT |
1814 | * |
1815 | * Free all transmit software resources | |
1816 | **/ | |
1817 | ||
3ad2cc67 | 1818 | static void |
581d708e MC |
1819 | e1000_free_tx_resources(struct e1000_adapter *adapter, |
1820 | struct e1000_tx_ring *tx_ring) | |
1da177e4 LT |
1821 | { |
1822 | struct pci_dev *pdev = adapter->pdev; | |
1823 | ||
581d708e | 1824 | e1000_clean_tx_ring(adapter, tx_ring); |
1da177e4 | 1825 | |
581d708e MC |
1826 | vfree(tx_ring->buffer_info); |
1827 | tx_ring->buffer_info = NULL; | |
1da177e4 | 1828 | |
581d708e | 1829 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); |
1da177e4 | 1830 | |
581d708e MC |
1831 | tx_ring->desc = NULL; |
1832 | } | |
1833 | ||
1834 | /** | |
1835 | * e1000_free_all_tx_resources - Free Tx Resources for All Queues | |
1836 | * @adapter: board private structure | |
1837 | * | |
1838 | * Free all transmit software resources | |
1839 | **/ | |
1840 | ||
1841 | void | |
1842 | e1000_free_all_tx_resources(struct e1000_adapter *adapter) | |
1843 | { | |
1844 | int i; | |
1845 | ||
f56799ea | 1846 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 1847 | e1000_free_tx_resources(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
1848 | } |
1849 | ||
1850 | static inline void | |
1851 | e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, | |
1852 | struct e1000_buffer *buffer_info) | |
1853 | { | |
96838a40 | 1854 | if (buffer_info->dma) { |
2648345f MC |
1855 | pci_unmap_page(adapter->pdev, |
1856 | buffer_info->dma, | |
1857 | buffer_info->length, | |
1858 | PCI_DMA_TODEVICE); | |
1da177e4 | 1859 | } |
8241e35e | 1860 | if (buffer_info->skb) |
1da177e4 | 1861 | dev_kfree_skb_any(buffer_info->skb); |
8241e35e | 1862 | memset(buffer_info, 0, sizeof(struct e1000_buffer)); |
1da177e4 LT |
1863 | } |
1864 | ||
1865 | /** | |
1866 | * e1000_clean_tx_ring - Free Tx Buffers | |
1867 | * @adapter: board private structure | |
581d708e | 1868 | * @tx_ring: ring to be cleaned |
1da177e4 LT |
1869 | **/ |
1870 | ||
1871 | static void | |
581d708e MC |
1872 | e1000_clean_tx_ring(struct e1000_adapter *adapter, |
1873 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 1874 | { |
1da177e4 LT |
1875 | struct e1000_buffer *buffer_info; |
1876 | unsigned long size; | |
1877 | unsigned int i; | |
1878 | ||
1879 | /* Free all the Tx ring sk_buffs */ | |
1880 | ||
96838a40 | 1881 | for (i = 0; i < tx_ring->count; i++) { |
1da177e4 LT |
1882 | buffer_info = &tx_ring->buffer_info[i]; |
1883 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); | |
1884 | } | |
1885 | ||
1886 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
1887 | memset(tx_ring->buffer_info, 0, size); | |
1888 | ||
1889 | /* Zero out the descriptor ring */ | |
1890 | ||
1891 | memset(tx_ring->desc, 0, tx_ring->size); | |
1892 | ||
1893 | tx_ring->next_to_use = 0; | |
1894 | tx_ring->next_to_clean = 0; | |
fd803241 | 1895 | tx_ring->last_tx_tso = 0; |
1da177e4 | 1896 | |
581d708e MC |
1897 | writel(0, adapter->hw.hw_addr + tx_ring->tdh); |
1898 | writel(0, adapter->hw.hw_addr + tx_ring->tdt); | |
1899 | } | |
1900 | ||
1901 | /** | |
1902 | * e1000_clean_all_tx_rings - Free Tx Buffers for all queues | |
1903 | * @adapter: board private structure | |
1904 | **/ | |
1905 | ||
1906 | static void | |
1907 | e1000_clean_all_tx_rings(struct e1000_adapter *adapter) | |
1908 | { | |
1909 | int i; | |
1910 | ||
f56799ea | 1911 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 1912 | e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
1913 | } |
1914 | ||
1915 | /** | |
1916 | * e1000_free_rx_resources - Free Rx Resources | |
1917 | * @adapter: board private structure | |
581d708e | 1918 | * @rx_ring: ring to clean the resources from |
1da177e4 LT |
1919 | * |
1920 | * Free all receive software resources | |
1921 | **/ | |
1922 | ||
3ad2cc67 | 1923 | static void |
581d708e MC |
1924 | e1000_free_rx_resources(struct e1000_adapter *adapter, |
1925 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 1926 | { |
1da177e4 LT |
1927 | struct pci_dev *pdev = adapter->pdev; |
1928 | ||
581d708e | 1929 | e1000_clean_rx_ring(adapter, rx_ring); |
1da177e4 LT |
1930 | |
1931 | vfree(rx_ring->buffer_info); | |
1932 | rx_ring->buffer_info = NULL; | |
2d7edb92 MC |
1933 | kfree(rx_ring->ps_page); |
1934 | rx_ring->ps_page = NULL; | |
1935 | kfree(rx_ring->ps_page_dma); | |
1936 | rx_ring->ps_page_dma = NULL; | |
1da177e4 LT |
1937 | |
1938 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
1939 | ||
1940 | rx_ring->desc = NULL; | |
1941 | } | |
1942 | ||
1943 | /** | |
581d708e | 1944 | * e1000_free_all_rx_resources - Free Rx Resources for All Queues |
1da177e4 | 1945 | * @adapter: board private structure |
581d708e MC |
1946 | * |
1947 | * Free all receive software resources | |
1948 | **/ | |
1949 | ||
1950 | void | |
1951 | e1000_free_all_rx_resources(struct e1000_adapter *adapter) | |
1952 | { | |
1953 | int i; | |
1954 | ||
f56799ea | 1955 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e MC |
1956 | e1000_free_rx_resources(adapter, &adapter->rx_ring[i]); |
1957 | } | |
1958 | ||
1959 | /** | |
1960 | * e1000_clean_rx_ring - Free Rx Buffers per Queue | |
1961 | * @adapter: board private structure | |
1962 | * @rx_ring: ring to free buffers from | |
1da177e4 LT |
1963 | **/ |
1964 | ||
1965 | static void | |
581d708e MC |
1966 | e1000_clean_rx_ring(struct e1000_adapter *adapter, |
1967 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 1968 | { |
1da177e4 | 1969 | struct e1000_buffer *buffer_info; |
2d7edb92 MC |
1970 | struct e1000_ps_page *ps_page; |
1971 | struct e1000_ps_page_dma *ps_page_dma; | |
1da177e4 LT |
1972 | struct pci_dev *pdev = adapter->pdev; |
1973 | unsigned long size; | |
2d7edb92 | 1974 | unsigned int i, j; |
1da177e4 LT |
1975 | |
1976 | /* Free all the Rx ring sk_buffs */ | |
96838a40 | 1977 | for (i = 0; i < rx_ring->count; i++) { |
1da177e4 | 1978 | buffer_info = &rx_ring->buffer_info[i]; |
96838a40 | 1979 | if (buffer_info->skb) { |
1da177e4 LT |
1980 | pci_unmap_single(pdev, |
1981 | buffer_info->dma, | |
1982 | buffer_info->length, | |
1983 | PCI_DMA_FROMDEVICE); | |
1984 | ||
1985 | dev_kfree_skb(buffer_info->skb); | |
1986 | buffer_info->skb = NULL; | |
997f5cbd JK |
1987 | } |
1988 | ps_page = &rx_ring->ps_page[i]; | |
1989 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
1990 | for (j = 0; j < adapter->rx_ps_pages; j++) { | |
1991 | if (!ps_page->ps_page[j]) break; | |
1992 | pci_unmap_page(pdev, | |
1993 | ps_page_dma->ps_page_dma[j], | |
1994 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
1995 | ps_page_dma->ps_page_dma[j] = 0; | |
1996 | put_page(ps_page->ps_page[j]); | |
1997 | ps_page->ps_page[j] = NULL; | |
1da177e4 LT |
1998 | } |
1999 | } | |
2000 | ||
2001 | size = sizeof(struct e1000_buffer) * rx_ring->count; | |
2002 | memset(rx_ring->buffer_info, 0, size); | |
2d7edb92 MC |
2003 | size = sizeof(struct e1000_ps_page) * rx_ring->count; |
2004 | memset(rx_ring->ps_page, 0, size); | |
2005 | size = sizeof(struct e1000_ps_page_dma) * rx_ring->count; | |
2006 | memset(rx_ring->ps_page_dma, 0, size); | |
1da177e4 LT |
2007 | |
2008 | /* Zero out the descriptor ring */ | |
2009 | ||
2010 | memset(rx_ring->desc, 0, rx_ring->size); | |
2011 | ||
2012 | rx_ring->next_to_clean = 0; | |
2013 | rx_ring->next_to_use = 0; | |
2014 | ||
581d708e MC |
2015 | writel(0, adapter->hw.hw_addr + rx_ring->rdh); |
2016 | writel(0, adapter->hw.hw_addr + rx_ring->rdt); | |
2017 | } | |
2018 | ||
2019 | /** | |
2020 | * e1000_clean_all_rx_rings - Free Rx Buffers for all queues | |
2021 | * @adapter: board private structure | |
2022 | **/ | |
2023 | ||
2024 | static void | |
2025 | e1000_clean_all_rx_rings(struct e1000_adapter *adapter) | |
2026 | { | |
2027 | int i; | |
2028 | ||
f56799ea | 2029 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e | 2030 | e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]); |
1da177e4 LT |
2031 | } |
2032 | ||
2033 | /* The 82542 2.0 (revision 2) needs to have the receive unit in reset | |
2034 | * and memory write and invalidate disabled for certain operations | |
2035 | */ | |
2036 | static void | |
2037 | e1000_enter_82542_rst(struct e1000_adapter *adapter) | |
2038 | { | |
2039 | struct net_device *netdev = adapter->netdev; | |
2040 | uint32_t rctl; | |
2041 | ||
2042 | e1000_pci_clear_mwi(&adapter->hw); | |
2043 | ||
2044 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
2045 | rctl |= E1000_RCTL_RST; | |
2046 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2047 | E1000_WRITE_FLUSH(&adapter->hw); | |
2048 | mdelay(5); | |
2049 | ||
96838a40 | 2050 | if (netif_running(netdev)) |
581d708e | 2051 | e1000_clean_all_rx_rings(adapter); |
1da177e4 LT |
2052 | } |
2053 | ||
2054 | static void | |
2055 | e1000_leave_82542_rst(struct e1000_adapter *adapter) | |
2056 | { | |
2057 | struct net_device *netdev = adapter->netdev; | |
2058 | uint32_t rctl; | |
2059 | ||
2060 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
2061 | rctl &= ~E1000_RCTL_RST; | |
2062 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2063 | E1000_WRITE_FLUSH(&adapter->hw); | |
2064 | mdelay(5); | |
2065 | ||
96838a40 | 2066 | if (adapter->hw.pci_cmd_word & PCI_COMMAND_INVALIDATE) |
1da177e4 LT |
2067 | e1000_pci_set_mwi(&adapter->hw); |
2068 | ||
96838a40 | 2069 | if (netif_running(netdev)) { |
72d64a43 JK |
2070 | /* No need to loop, because 82542 supports only 1 queue */ |
2071 | struct e1000_rx_ring *ring = &adapter->rx_ring[0]; | |
7c4d3367 | 2072 | e1000_configure_rx(adapter); |
72d64a43 | 2073 | adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring)); |
1da177e4 LT |
2074 | } |
2075 | } | |
2076 | ||
2077 | /** | |
2078 | * e1000_set_mac - Change the Ethernet Address of the NIC | |
2079 | * @netdev: network interface device structure | |
2080 | * @p: pointer to an address structure | |
2081 | * | |
2082 | * Returns 0 on success, negative on failure | |
2083 | **/ | |
2084 | ||
2085 | static int | |
2086 | e1000_set_mac(struct net_device *netdev, void *p) | |
2087 | { | |
60490fe0 | 2088 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2089 | struct sockaddr *addr = p; |
2090 | ||
96838a40 | 2091 | if (!is_valid_ether_addr(addr->sa_data)) |
1da177e4 LT |
2092 | return -EADDRNOTAVAIL; |
2093 | ||
2094 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2095 | ||
96838a40 | 2096 | if (adapter->hw.mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2097 | e1000_enter_82542_rst(adapter); |
2098 | ||
2099 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
2100 | memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); | |
2101 | ||
2102 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0); | |
2103 | ||
868d5309 MC |
2104 | /* With 82571 controllers, LAA may be overwritten (with the default) |
2105 | * due to controller reset from the other port. */ | |
2106 | if (adapter->hw.mac_type == e1000_82571) { | |
2107 | /* activate the work around */ | |
2108 | adapter->hw.laa_is_present = 1; | |
2109 | ||
96838a40 JB |
2110 | /* Hold a copy of the LAA in RAR[14] This is done so that |
2111 | * between the time RAR[0] gets clobbered and the time it | |
2112 | * gets fixed (in e1000_watchdog), the actual LAA is in one | |
868d5309 | 2113 | * of the RARs and no incoming packets directed to this port |
96838a40 | 2114 | * are dropped. Eventaully the LAA will be in RAR[0] and |
868d5309 | 2115 | * RAR[14] */ |
96838a40 | 2116 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, |
868d5309 MC |
2117 | E1000_RAR_ENTRIES - 1); |
2118 | } | |
2119 | ||
96838a40 | 2120 | if (adapter->hw.mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2121 | e1000_leave_82542_rst(adapter); |
2122 | ||
2123 | return 0; | |
2124 | } | |
2125 | ||
2126 | /** | |
2127 | * e1000_set_multi - Multicast and Promiscuous mode set | |
2128 | * @netdev: network interface device structure | |
2129 | * | |
2130 | * The set_multi entry point is called whenever the multicast address | |
2131 | * list or the network interface flags are updated. This routine is | |
2132 | * responsible for configuring the hardware for proper multicast, | |
2133 | * promiscuous mode, and all-multi behavior. | |
2134 | **/ | |
2135 | ||
2136 | static void | |
2137 | e1000_set_multi(struct net_device *netdev) | |
2138 | { | |
60490fe0 | 2139 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2140 | struct e1000_hw *hw = &adapter->hw; |
2141 | struct dev_mc_list *mc_ptr; | |
2142 | uint32_t rctl; | |
2143 | uint32_t hash_value; | |
868d5309 | 2144 | int i, rar_entries = E1000_RAR_ENTRIES; |
1da177e4 | 2145 | |
868d5309 MC |
2146 | /* reserve RAR[14] for LAA over-write work-around */ |
2147 | if (adapter->hw.mac_type == e1000_82571) | |
2148 | rar_entries--; | |
1da177e4 | 2149 | |
2648345f MC |
2150 | /* Check for Promiscuous and All Multicast modes */ |
2151 | ||
1da177e4 LT |
2152 | rctl = E1000_READ_REG(hw, RCTL); |
2153 | ||
96838a40 | 2154 | if (netdev->flags & IFF_PROMISC) { |
1da177e4 | 2155 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
96838a40 | 2156 | } else if (netdev->flags & IFF_ALLMULTI) { |
1da177e4 LT |
2157 | rctl |= E1000_RCTL_MPE; |
2158 | rctl &= ~E1000_RCTL_UPE; | |
2159 | } else { | |
2160 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); | |
2161 | } | |
2162 | ||
2163 | E1000_WRITE_REG(hw, RCTL, rctl); | |
2164 | ||
2165 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2166 | ||
96838a40 | 2167 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2168 | e1000_enter_82542_rst(adapter); |
2169 | ||
2170 | /* load the first 14 multicast address into the exact filters 1-14 | |
2171 | * RAR 0 is used for the station MAC adddress | |
2172 | * if there are not 14 addresses, go ahead and clear the filters | |
868d5309 | 2173 | * -- with 82571 controllers only 0-13 entries are filled here |
1da177e4 LT |
2174 | */ |
2175 | mc_ptr = netdev->mc_list; | |
2176 | ||
96838a40 | 2177 | for (i = 1; i < rar_entries; i++) { |
868d5309 | 2178 | if (mc_ptr) { |
1da177e4 LT |
2179 | e1000_rar_set(hw, mc_ptr->dmi_addr, i); |
2180 | mc_ptr = mc_ptr->next; | |
2181 | } else { | |
2182 | E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); | |
2183 | E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); | |
2184 | } | |
2185 | } | |
2186 | ||
2187 | /* clear the old settings from the multicast hash table */ | |
2188 | ||
96838a40 | 2189 | for (i = 0; i < E1000_NUM_MTA_REGISTERS; i++) |
1da177e4 LT |
2190 | E1000_WRITE_REG_ARRAY(hw, MTA, i, 0); |
2191 | ||
2192 | /* load any remaining addresses into the hash table */ | |
2193 | ||
96838a40 | 2194 | for (; mc_ptr; mc_ptr = mc_ptr->next) { |
1da177e4 LT |
2195 | hash_value = e1000_hash_mc_addr(hw, mc_ptr->dmi_addr); |
2196 | e1000_mta_set(hw, hash_value); | |
2197 | } | |
2198 | ||
96838a40 | 2199 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 | 2200 | e1000_leave_82542_rst(adapter); |
1da177e4 LT |
2201 | } |
2202 | ||
2203 | /* Need to wait a few seconds after link up to get diagnostic information from | |
2204 | * the phy */ | |
2205 | ||
2206 | static void | |
2207 | e1000_update_phy_info(unsigned long data) | |
2208 | { | |
2209 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
2210 | e1000_phy_get_info(&adapter->hw, &adapter->phy_info); | |
2211 | } | |
2212 | ||
2213 | /** | |
2214 | * e1000_82547_tx_fifo_stall - Timer Call-back | |
2215 | * @data: pointer to adapter cast into an unsigned long | |
2216 | **/ | |
2217 | ||
2218 | static void | |
2219 | e1000_82547_tx_fifo_stall(unsigned long data) | |
2220 | { | |
2221 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
2222 | struct net_device *netdev = adapter->netdev; | |
2223 | uint32_t tctl; | |
2224 | ||
96838a40 JB |
2225 | if (atomic_read(&adapter->tx_fifo_stall)) { |
2226 | if ((E1000_READ_REG(&adapter->hw, TDT) == | |
1da177e4 LT |
2227 | E1000_READ_REG(&adapter->hw, TDH)) && |
2228 | (E1000_READ_REG(&adapter->hw, TDFT) == | |
2229 | E1000_READ_REG(&adapter->hw, TDFH)) && | |
2230 | (E1000_READ_REG(&adapter->hw, TDFTS) == | |
2231 | E1000_READ_REG(&adapter->hw, TDFHS))) { | |
2232 | tctl = E1000_READ_REG(&adapter->hw, TCTL); | |
2233 | E1000_WRITE_REG(&adapter->hw, TCTL, | |
2234 | tctl & ~E1000_TCTL_EN); | |
2235 | E1000_WRITE_REG(&adapter->hw, TDFT, | |
2236 | adapter->tx_head_addr); | |
2237 | E1000_WRITE_REG(&adapter->hw, TDFH, | |
2238 | adapter->tx_head_addr); | |
2239 | E1000_WRITE_REG(&adapter->hw, TDFTS, | |
2240 | adapter->tx_head_addr); | |
2241 | E1000_WRITE_REG(&adapter->hw, TDFHS, | |
2242 | adapter->tx_head_addr); | |
2243 | E1000_WRITE_REG(&adapter->hw, TCTL, tctl); | |
2244 | E1000_WRITE_FLUSH(&adapter->hw); | |
2245 | ||
2246 | adapter->tx_fifo_head = 0; | |
2247 | atomic_set(&adapter->tx_fifo_stall, 0); | |
2248 | netif_wake_queue(netdev); | |
2249 | } else { | |
2250 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); | |
2251 | } | |
2252 | } | |
2253 | } | |
2254 | ||
2255 | /** | |
2256 | * e1000_watchdog - Timer Call-back | |
2257 | * @data: pointer to adapter cast into an unsigned long | |
2258 | **/ | |
2259 | static void | |
2260 | e1000_watchdog(unsigned long data) | |
2261 | { | |
2262 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
2263 | ||
2264 | /* Do the rest outside of interrupt context */ | |
2265 | schedule_work(&adapter->watchdog_task); | |
2266 | } | |
2267 | ||
2268 | static void | |
2269 | e1000_watchdog_task(struct e1000_adapter *adapter) | |
2270 | { | |
2271 | struct net_device *netdev = adapter->netdev; | |
545c67c0 | 2272 | struct e1000_tx_ring *txdr = adapter->tx_ring; |
7e6c9861 | 2273 | uint32_t link, tctl; |
1da177e4 LT |
2274 | |
2275 | e1000_check_for_link(&adapter->hw); | |
2d7edb92 MC |
2276 | if (adapter->hw.mac_type == e1000_82573) { |
2277 | e1000_enable_tx_pkt_filtering(&adapter->hw); | |
96838a40 | 2278 | if (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id) |
2d7edb92 | 2279 | e1000_update_mng_vlan(adapter); |
96838a40 | 2280 | } |
1da177e4 | 2281 | |
96838a40 | 2282 | if ((adapter->hw.media_type == e1000_media_type_internal_serdes) && |
1da177e4 LT |
2283 | !(E1000_READ_REG(&adapter->hw, TXCW) & E1000_TXCW_ANE)) |
2284 | link = !adapter->hw.serdes_link_down; | |
2285 | else | |
2286 | link = E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU; | |
2287 | ||
96838a40 JB |
2288 | if (link) { |
2289 | if (!netif_carrier_ok(netdev)) { | |
1da177e4 LT |
2290 | e1000_get_speed_and_duplex(&adapter->hw, |
2291 | &adapter->link_speed, | |
2292 | &adapter->link_duplex); | |
2293 | ||
2294 | DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s\n", | |
2295 | adapter->link_speed, | |
2296 | adapter->link_duplex == FULL_DUPLEX ? | |
2297 | "Full Duplex" : "Half Duplex"); | |
2298 | ||
7e6c9861 JK |
2299 | /* tweak tx_queue_len according to speed/duplex |
2300 | * and adjust the timeout factor */ | |
66a2b0a3 JK |
2301 | netdev->tx_queue_len = adapter->tx_queue_len; |
2302 | adapter->tx_timeout_factor = 1; | |
7e6c9861 JK |
2303 | adapter->txb2b = 1; |
2304 | switch (adapter->link_speed) { | |
2305 | case SPEED_10: | |
2306 | adapter->txb2b = 0; | |
2307 | netdev->tx_queue_len = 10; | |
2308 | adapter->tx_timeout_factor = 8; | |
2309 | break; | |
2310 | case SPEED_100: | |
2311 | adapter->txb2b = 0; | |
2312 | netdev->tx_queue_len = 100; | |
2313 | /* maybe add some timeout factor ? */ | |
2314 | break; | |
2315 | } | |
2316 | ||
2317 | if ((adapter->hw.mac_type == e1000_82571 || | |
2318 | adapter->hw.mac_type == e1000_82572) && | |
2319 | adapter->txb2b == 0) { | |
2320 | #define SPEED_MODE_BIT (1 << 21) | |
2321 | uint32_t tarc0; | |
2322 | tarc0 = E1000_READ_REG(&adapter->hw, TARC0); | |
2323 | tarc0 &= ~SPEED_MODE_BIT; | |
2324 | E1000_WRITE_REG(&adapter->hw, TARC0, tarc0); | |
2325 | } | |
2326 | ||
2327 | #ifdef NETIF_F_TSO | |
2328 | /* disable TSO for pcie and 10/100 speeds, to avoid | |
2329 | * some hardware issues */ | |
2330 | if (!adapter->tso_force && | |
2331 | adapter->hw.bus_type == e1000_bus_type_pci_express){ | |
66a2b0a3 JK |
2332 | switch (adapter->link_speed) { |
2333 | case SPEED_10: | |
66a2b0a3 | 2334 | case SPEED_100: |
7e6c9861 JK |
2335 | DPRINTK(PROBE,INFO, |
2336 | "10/100 speed: disabling TSO\n"); | |
2337 | netdev->features &= ~NETIF_F_TSO; | |
2338 | break; | |
2339 | case SPEED_1000: | |
2340 | netdev->features |= NETIF_F_TSO; | |
2341 | break; | |
2342 | default: | |
2343 | /* oops */ | |
66a2b0a3 JK |
2344 | break; |
2345 | } | |
2346 | } | |
7e6c9861 JK |
2347 | #endif |
2348 | ||
2349 | /* enable transmits in the hardware, need to do this | |
2350 | * after setting TARC0 */ | |
2351 | tctl = E1000_READ_REG(&adapter->hw, TCTL); | |
2352 | tctl |= E1000_TCTL_EN; | |
2353 | E1000_WRITE_REG(&adapter->hw, TCTL, tctl); | |
66a2b0a3 | 2354 | |
1da177e4 LT |
2355 | netif_carrier_on(netdev); |
2356 | netif_wake_queue(netdev); | |
2357 | mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ); | |
2358 | adapter->smartspeed = 0; | |
2359 | } | |
2360 | } else { | |
96838a40 | 2361 | if (netif_carrier_ok(netdev)) { |
1da177e4 LT |
2362 | adapter->link_speed = 0; |
2363 | adapter->link_duplex = 0; | |
2364 | DPRINTK(LINK, INFO, "NIC Link is Down\n"); | |
2365 | netif_carrier_off(netdev); | |
2366 | netif_stop_queue(netdev); | |
2367 | mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ); | |
87041639 JK |
2368 | |
2369 | /* 80003ES2LAN workaround-- | |
2370 | * For packet buffer work-around on link down event; | |
2371 | * disable receives in the ISR and | |
2372 | * reset device here in the watchdog | |
2373 | */ | |
2374 | if (adapter->hw.mac_type == e1000_80003es2lan) { | |
2375 | /* reset device */ | |
2376 | schedule_work(&adapter->reset_task); | |
2377 | } | |
1da177e4 LT |
2378 | } |
2379 | ||
2380 | e1000_smartspeed(adapter); | |
2381 | } | |
2382 | ||
2383 | e1000_update_stats(adapter); | |
2384 | ||
2385 | adapter->hw.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; | |
2386 | adapter->tpt_old = adapter->stats.tpt; | |
2387 | adapter->hw.collision_delta = adapter->stats.colc - adapter->colc_old; | |
2388 | adapter->colc_old = adapter->stats.colc; | |
2389 | ||
2390 | adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; | |
2391 | adapter->gorcl_old = adapter->stats.gorcl; | |
2392 | adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; | |
2393 | adapter->gotcl_old = adapter->stats.gotcl; | |
2394 | ||
2395 | e1000_update_adaptive(&adapter->hw); | |
2396 | ||
f56799ea | 2397 | if (!netif_carrier_ok(netdev)) { |
581d708e | 2398 | if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { |
1da177e4 LT |
2399 | /* We've lost link, so the controller stops DMA, |
2400 | * but we've got queued Tx work that's never going | |
2401 | * to get done, so reset controller to flush Tx. | |
2402 | * (Do the reset outside of interrupt context). */ | |
87041639 JK |
2403 | adapter->tx_timeout_count++; |
2404 | schedule_work(&adapter->reset_task); | |
1da177e4 LT |
2405 | } |
2406 | } | |
2407 | ||
2408 | /* Dynamic mode for Interrupt Throttle Rate (ITR) */ | |
96838a40 | 2409 | if (adapter->hw.mac_type >= e1000_82540 && adapter->itr == 1) { |
1da177e4 LT |
2410 | /* Symmetric Tx/Rx gets a reduced ITR=2000; Total |
2411 | * asymmetrical Tx or Rx gets ITR=8000; everyone | |
2412 | * else is between 2000-8000. */ | |
2413 | uint32_t goc = (adapter->gotcl + adapter->gorcl) / 10000; | |
96838a40 | 2414 | uint32_t dif = (adapter->gotcl > adapter->gorcl ? |
1da177e4 LT |
2415 | adapter->gotcl - adapter->gorcl : |
2416 | adapter->gorcl - adapter->gotcl) / 10000; | |
2417 | uint32_t itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; | |
2418 | E1000_WRITE_REG(&adapter->hw, ITR, 1000000000 / (itr * 256)); | |
2419 | } | |
2420 | ||
2421 | /* Cause software interrupt to ensure rx ring is cleaned */ | |
2422 | E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_RXDMT0); | |
2423 | ||
2648345f | 2424 | /* Force detection of hung controller every watchdog period */ |
1da177e4 LT |
2425 | adapter->detect_tx_hung = TRUE; |
2426 | ||
96838a40 | 2427 | /* With 82571 controllers, LAA may be overwritten due to controller |
868d5309 MC |
2428 | * reset from the other port. Set the appropriate LAA in RAR[0] */ |
2429 | if (adapter->hw.mac_type == e1000_82571 && adapter->hw.laa_is_present) | |
2430 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0); | |
2431 | ||
1da177e4 LT |
2432 | /* Reset the timer */ |
2433 | mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ); | |
2434 | } | |
2435 | ||
2436 | #define E1000_TX_FLAGS_CSUM 0x00000001 | |
2437 | #define E1000_TX_FLAGS_VLAN 0x00000002 | |
2438 | #define E1000_TX_FLAGS_TSO 0x00000004 | |
2d7edb92 | 2439 | #define E1000_TX_FLAGS_IPV4 0x00000008 |
1da177e4 LT |
2440 | #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
2441 | #define E1000_TX_FLAGS_VLAN_SHIFT 16 | |
2442 | ||
2443 | static inline int | |
581d708e MC |
2444 | e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2445 | struct sk_buff *skb) | |
1da177e4 LT |
2446 | { |
2447 | #ifdef NETIF_F_TSO | |
2448 | struct e1000_context_desc *context_desc; | |
545c67c0 | 2449 | struct e1000_buffer *buffer_info; |
1da177e4 LT |
2450 | unsigned int i; |
2451 | uint32_t cmd_length = 0; | |
2d7edb92 | 2452 | uint16_t ipcse = 0, tucse, mss; |
1da177e4 LT |
2453 | uint8_t ipcss, ipcso, tucss, tucso, hdr_len; |
2454 | int err; | |
2455 | ||
96838a40 | 2456 | if (skb_shinfo(skb)->tso_size) { |
1da177e4 LT |
2457 | if (skb_header_cloned(skb)) { |
2458 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
2459 | if (err) | |
2460 | return err; | |
2461 | } | |
2462 | ||
2463 | hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2)); | |
2464 | mss = skb_shinfo(skb)->tso_size; | |
96838a40 | 2465 | if (skb->protocol == ntohs(ETH_P_IP)) { |
2d7edb92 MC |
2466 | skb->nh.iph->tot_len = 0; |
2467 | skb->nh.iph->check = 0; | |
2468 | skb->h.th->check = | |
2469 | ~csum_tcpudp_magic(skb->nh.iph->saddr, | |
2470 | skb->nh.iph->daddr, | |
2471 | 0, | |
2472 | IPPROTO_TCP, | |
2473 | 0); | |
2474 | cmd_length = E1000_TXD_CMD_IP; | |
2475 | ipcse = skb->h.raw - skb->data - 1; | |
2476 | #ifdef NETIF_F_TSO_IPV6 | |
96838a40 | 2477 | } else if (skb->protocol == ntohs(ETH_P_IPV6)) { |
2d7edb92 MC |
2478 | skb->nh.ipv6h->payload_len = 0; |
2479 | skb->h.th->check = | |
2480 | ~csum_ipv6_magic(&skb->nh.ipv6h->saddr, | |
2481 | &skb->nh.ipv6h->daddr, | |
2482 | 0, | |
2483 | IPPROTO_TCP, | |
2484 | 0); | |
2485 | ipcse = 0; | |
2486 | #endif | |
2487 | } | |
1da177e4 LT |
2488 | ipcss = skb->nh.raw - skb->data; |
2489 | ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data; | |
1da177e4 LT |
2490 | tucss = skb->h.raw - skb->data; |
2491 | tucso = (void *)&(skb->h.th->check) - (void *)skb->data; | |
2492 | tucse = 0; | |
2493 | ||
2494 | cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | | |
2d7edb92 | 2495 | E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
1da177e4 | 2496 | |
581d708e MC |
2497 | i = tx_ring->next_to_use; |
2498 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
545c67c0 | 2499 | buffer_info = &tx_ring->buffer_info[i]; |
1da177e4 LT |
2500 | |
2501 | context_desc->lower_setup.ip_fields.ipcss = ipcss; | |
2502 | context_desc->lower_setup.ip_fields.ipcso = ipcso; | |
2503 | context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); | |
2504 | context_desc->upper_setup.tcp_fields.tucss = tucss; | |
2505 | context_desc->upper_setup.tcp_fields.tucso = tucso; | |
2506 | context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); | |
2507 | context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); | |
2508 | context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; | |
2509 | context_desc->cmd_and_length = cpu_to_le32(cmd_length); | |
2510 | ||
545c67c0 JK |
2511 | buffer_info->time_stamp = jiffies; |
2512 | ||
581d708e MC |
2513 | if (++i == tx_ring->count) i = 0; |
2514 | tx_ring->next_to_use = i; | |
1da177e4 | 2515 | |
8241e35e | 2516 | return TRUE; |
1da177e4 LT |
2517 | } |
2518 | #endif | |
2519 | ||
8241e35e | 2520 | return FALSE; |
1da177e4 LT |
2521 | } |
2522 | ||
2523 | static inline boolean_t | |
581d708e MC |
2524 | e1000_tx_csum(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2525 | struct sk_buff *skb) | |
1da177e4 LT |
2526 | { |
2527 | struct e1000_context_desc *context_desc; | |
545c67c0 | 2528 | struct e1000_buffer *buffer_info; |
1da177e4 LT |
2529 | unsigned int i; |
2530 | uint8_t css; | |
2531 | ||
96838a40 | 2532 | if (likely(skb->ip_summed == CHECKSUM_HW)) { |
1da177e4 LT |
2533 | css = skb->h.raw - skb->data; |
2534 | ||
581d708e | 2535 | i = tx_ring->next_to_use; |
545c67c0 | 2536 | buffer_info = &tx_ring->buffer_info[i]; |
581d708e | 2537 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
1da177e4 LT |
2538 | |
2539 | context_desc->upper_setup.tcp_fields.tucss = css; | |
2540 | context_desc->upper_setup.tcp_fields.tucso = css + skb->csum; | |
2541 | context_desc->upper_setup.tcp_fields.tucse = 0; | |
2542 | context_desc->tcp_seg_setup.data = 0; | |
2543 | context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT); | |
2544 | ||
545c67c0 JK |
2545 | buffer_info->time_stamp = jiffies; |
2546 | ||
581d708e MC |
2547 | if (unlikely(++i == tx_ring->count)) i = 0; |
2548 | tx_ring->next_to_use = i; | |
1da177e4 LT |
2549 | |
2550 | return TRUE; | |
2551 | } | |
2552 | ||
2553 | return FALSE; | |
2554 | } | |
2555 | ||
2556 | #define E1000_MAX_TXD_PWR 12 | |
2557 | #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) | |
2558 | ||
2559 | static inline int | |
581d708e MC |
2560 | e1000_tx_map(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2561 | struct sk_buff *skb, unsigned int first, unsigned int max_per_txd, | |
2562 | unsigned int nr_frags, unsigned int mss) | |
1da177e4 | 2563 | { |
1da177e4 LT |
2564 | struct e1000_buffer *buffer_info; |
2565 | unsigned int len = skb->len; | |
2566 | unsigned int offset = 0, size, count = 0, i; | |
2567 | unsigned int f; | |
2568 | len -= skb->data_len; | |
2569 | ||
2570 | i = tx_ring->next_to_use; | |
2571 | ||
96838a40 | 2572 | while (len) { |
1da177e4 LT |
2573 | buffer_info = &tx_ring->buffer_info[i]; |
2574 | size = min(len, max_per_txd); | |
2575 | #ifdef NETIF_F_TSO | |
fd803241 JK |
2576 | /* Workaround for Controller erratum -- |
2577 | * descriptor for non-tso packet in a linear SKB that follows a | |
2578 | * tso gets written back prematurely before the data is fully | |
2579 | * DMAd to the controller */ | |
2580 | if (!skb->data_len && tx_ring->last_tx_tso && | |
2581 | !skb_shinfo(skb)->tso_size) { | |
2582 | tx_ring->last_tx_tso = 0; | |
2583 | size -= 4; | |
2584 | } | |
2585 | ||
1da177e4 LT |
2586 | /* Workaround for premature desc write-backs |
2587 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 2588 | if (unlikely(mss && !nr_frags && size == len && size > 8)) |
1da177e4 LT |
2589 | size -= 4; |
2590 | #endif | |
97338bde MC |
2591 | /* work-around for errata 10 and it applies |
2592 | * to all controllers in PCI-X mode | |
2593 | * The fix is to make sure that the first descriptor of a | |
2594 | * packet is smaller than 2048 - 16 - 16 (or 2016) bytes | |
2595 | */ | |
96838a40 | 2596 | if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && |
97338bde MC |
2597 | (size > 2015) && count == 0)) |
2598 | size = 2015; | |
96838a40 | 2599 | |
1da177e4 LT |
2600 | /* Workaround for potential 82544 hang in PCI-X. Avoid |
2601 | * terminating buffers within evenly-aligned dwords. */ | |
96838a40 | 2602 | if (unlikely(adapter->pcix_82544 && |
1da177e4 LT |
2603 | !((unsigned long)(skb->data + offset + size - 1) & 4) && |
2604 | size > 4)) | |
2605 | size -= 4; | |
2606 | ||
2607 | buffer_info->length = size; | |
2608 | buffer_info->dma = | |
2609 | pci_map_single(adapter->pdev, | |
2610 | skb->data + offset, | |
2611 | size, | |
2612 | PCI_DMA_TODEVICE); | |
2613 | buffer_info->time_stamp = jiffies; | |
2614 | ||
2615 | len -= size; | |
2616 | offset += size; | |
2617 | count++; | |
96838a40 | 2618 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
2619 | } |
2620 | ||
96838a40 | 2621 | for (f = 0; f < nr_frags; f++) { |
1da177e4 LT |
2622 | struct skb_frag_struct *frag; |
2623 | ||
2624 | frag = &skb_shinfo(skb)->frags[f]; | |
2625 | len = frag->size; | |
2626 | offset = frag->page_offset; | |
2627 | ||
96838a40 | 2628 | while (len) { |
1da177e4 LT |
2629 | buffer_info = &tx_ring->buffer_info[i]; |
2630 | size = min(len, max_per_txd); | |
2631 | #ifdef NETIF_F_TSO | |
2632 | /* Workaround for premature desc write-backs | |
2633 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 2634 | if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) |
1da177e4 LT |
2635 | size -= 4; |
2636 | #endif | |
2637 | /* Workaround for potential 82544 hang in PCI-X. | |
2638 | * Avoid terminating buffers within evenly-aligned | |
2639 | * dwords. */ | |
96838a40 | 2640 | if (unlikely(adapter->pcix_82544 && |
1da177e4 LT |
2641 | !((unsigned long)(frag->page+offset+size-1) & 4) && |
2642 | size > 4)) | |
2643 | size -= 4; | |
2644 | ||
2645 | buffer_info->length = size; | |
2646 | buffer_info->dma = | |
2647 | pci_map_page(adapter->pdev, | |
2648 | frag->page, | |
2649 | offset, | |
2650 | size, | |
2651 | PCI_DMA_TODEVICE); | |
2652 | buffer_info->time_stamp = jiffies; | |
2653 | ||
2654 | len -= size; | |
2655 | offset += size; | |
2656 | count++; | |
96838a40 | 2657 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
2658 | } |
2659 | } | |
2660 | ||
2661 | i = (i == 0) ? tx_ring->count - 1 : i - 1; | |
2662 | tx_ring->buffer_info[i].skb = skb; | |
2663 | tx_ring->buffer_info[first].next_to_watch = i; | |
2664 | ||
2665 | return count; | |
2666 | } | |
2667 | ||
2668 | static inline void | |
581d708e MC |
2669 | e1000_tx_queue(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2670 | int tx_flags, int count) | |
1da177e4 | 2671 | { |
1da177e4 LT |
2672 | struct e1000_tx_desc *tx_desc = NULL; |
2673 | struct e1000_buffer *buffer_info; | |
2674 | uint32_t txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; | |
2675 | unsigned int i; | |
2676 | ||
96838a40 | 2677 | if (likely(tx_flags & E1000_TX_FLAGS_TSO)) { |
1da177e4 LT |
2678 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
2679 | E1000_TXD_CMD_TSE; | |
2d7edb92 MC |
2680 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
2681 | ||
96838a40 | 2682 | if (likely(tx_flags & E1000_TX_FLAGS_IPV4)) |
2d7edb92 | 2683 | txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
1da177e4 LT |
2684 | } |
2685 | ||
96838a40 | 2686 | if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) { |
1da177e4 LT |
2687 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
2688 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
2689 | } | |
2690 | ||
96838a40 | 2691 | if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { |
1da177e4 LT |
2692 | txd_lower |= E1000_TXD_CMD_VLE; |
2693 | txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); | |
2694 | } | |
2695 | ||
2696 | i = tx_ring->next_to_use; | |
2697 | ||
96838a40 | 2698 | while (count--) { |
1da177e4 LT |
2699 | buffer_info = &tx_ring->buffer_info[i]; |
2700 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
2701 | tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
2702 | tx_desc->lower.data = | |
2703 | cpu_to_le32(txd_lower | buffer_info->length); | |
2704 | tx_desc->upper.data = cpu_to_le32(txd_upper); | |
96838a40 | 2705 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
2706 | } |
2707 | ||
2708 | tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); | |
2709 | ||
2710 | /* Force memory writes to complete before letting h/w | |
2711 | * know there are new descriptors to fetch. (Only | |
2712 | * applicable for weak-ordered memory model archs, | |
2713 | * such as IA-64). */ | |
2714 | wmb(); | |
2715 | ||
2716 | tx_ring->next_to_use = i; | |
581d708e | 2717 | writel(i, adapter->hw.hw_addr + tx_ring->tdt); |
1da177e4 LT |
2718 | } |
2719 | ||
2720 | /** | |
2721 | * 82547 workaround to avoid controller hang in half-duplex environment. | |
2722 | * The workaround is to avoid queuing a large packet that would span | |
2723 | * the internal Tx FIFO ring boundary by notifying the stack to resend | |
2724 | * the packet at a later time. This gives the Tx FIFO an opportunity to | |
2725 | * flush all packets. When that occurs, we reset the Tx FIFO pointers | |
2726 | * to the beginning of the Tx FIFO. | |
2727 | **/ | |
2728 | ||
2729 | #define E1000_FIFO_HDR 0x10 | |
2730 | #define E1000_82547_PAD_LEN 0x3E0 | |
2731 | ||
2732 | static inline int | |
2733 | e1000_82547_fifo_workaround(struct e1000_adapter *adapter, struct sk_buff *skb) | |
2734 | { | |
2735 | uint32_t fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; | |
2736 | uint32_t skb_fifo_len = skb->len + E1000_FIFO_HDR; | |
2737 | ||
2738 | E1000_ROUNDUP(skb_fifo_len, E1000_FIFO_HDR); | |
2739 | ||
96838a40 | 2740 | if (adapter->link_duplex != HALF_DUPLEX) |
1da177e4 LT |
2741 | goto no_fifo_stall_required; |
2742 | ||
96838a40 | 2743 | if (atomic_read(&adapter->tx_fifo_stall)) |
1da177e4 LT |
2744 | return 1; |
2745 | ||
96838a40 | 2746 | if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { |
1da177e4 LT |
2747 | atomic_set(&adapter->tx_fifo_stall, 1); |
2748 | return 1; | |
2749 | } | |
2750 | ||
2751 | no_fifo_stall_required: | |
2752 | adapter->tx_fifo_head += skb_fifo_len; | |
96838a40 | 2753 | if (adapter->tx_fifo_head >= adapter->tx_fifo_size) |
1da177e4 LT |
2754 | adapter->tx_fifo_head -= adapter->tx_fifo_size; |
2755 | return 0; | |
2756 | } | |
2757 | ||
2d7edb92 MC |
2758 | #define MINIMUM_DHCP_PACKET_SIZE 282 |
2759 | static inline int | |
2760 | e1000_transfer_dhcp_info(struct e1000_adapter *adapter, struct sk_buff *skb) | |
2761 | { | |
2762 | struct e1000_hw *hw = &adapter->hw; | |
2763 | uint16_t length, offset; | |
96838a40 JB |
2764 | if (vlan_tx_tag_present(skb)) { |
2765 | if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) && | |
2d7edb92 MC |
2766 | ( adapter->hw.mng_cookie.status & |
2767 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) ) | |
2768 | return 0; | |
2769 | } | |
20a44028 | 2770 | if (skb->len > MINIMUM_DHCP_PACKET_SIZE) { |
2d7edb92 | 2771 | struct ethhdr *eth = (struct ethhdr *) skb->data; |
96838a40 JB |
2772 | if ((htons(ETH_P_IP) == eth->h_proto)) { |
2773 | const struct iphdr *ip = | |
2d7edb92 | 2774 | (struct iphdr *)((uint8_t *)skb->data+14); |
96838a40 JB |
2775 | if (IPPROTO_UDP == ip->protocol) { |
2776 | struct udphdr *udp = | |
2777 | (struct udphdr *)((uint8_t *)ip + | |
2d7edb92 | 2778 | (ip->ihl << 2)); |
96838a40 | 2779 | if (ntohs(udp->dest) == 67) { |
2d7edb92 MC |
2780 | offset = (uint8_t *)udp + 8 - skb->data; |
2781 | length = skb->len - offset; | |
2782 | ||
2783 | return e1000_mng_write_dhcp_info(hw, | |
96838a40 | 2784 | (uint8_t *)udp + 8, |
2d7edb92 MC |
2785 | length); |
2786 | } | |
2787 | } | |
2788 | } | |
2789 | } | |
2790 | return 0; | |
2791 | } | |
2792 | ||
1da177e4 LT |
2793 | #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
2794 | static int | |
2795 | e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
2796 | { | |
60490fe0 | 2797 | struct e1000_adapter *adapter = netdev_priv(netdev); |
581d708e | 2798 | struct e1000_tx_ring *tx_ring; |
1da177e4 LT |
2799 | unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; |
2800 | unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; | |
2801 | unsigned int tx_flags = 0; | |
2802 | unsigned int len = skb->len; | |
2803 | unsigned long flags; | |
2804 | unsigned int nr_frags = 0; | |
2805 | unsigned int mss = 0; | |
2806 | int count = 0; | |
96838a40 | 2807 | int tso; |
1da177e4 LT |
2808 | unsigned int f; |
2809 | len -= skb->data_len; | |
2810 | ||
581d708e | 2811 | tx_ring = adapter->tx_ring; |
24025e4e | 2812 | |
581d708e | 2813 | if (unlikely(skb->len <= 0)) { |
1da177e4 LT |
2814 | dev_kfree_skb_any(skb); |
2815 | return NETDEV_TX_OK; | |
2816 | } | |
2817 | ||
2818 | #ifdef NETIF_F_TSO | |
2819 | mss = skb_shinfo(skb)->tso_size; | |
2648345f | 2820 | /* The controller does a simple calculation to |
1da177e4 LT |
2821 | * make sure there is enough room in the FIFO before |
2822 | * initiating the DMA for each buffer. The calc is: | |
2823 | * 4 = ceil(buffer len/mss). To make sure we don't | |
2824 | * overrun the FIFO, adjust the max buffer len if mss | |
2825 | * drops. */ | |
96838a40 | 2826 | if (mss) { |
9a3056da | 2827 | uint8_t hdr_len; |
1da177e4 LT |
2828 | max_per_txd = min(mss << 2, max_per_txd); |
2829 | max_txd_pwr = fls(max_per_txd) - 1; | |
9a3056da | 2830 | |
9f687888 | 2831 | /* TSO Workaround for 82571/2/3 Controllers -- if skb->data |
9a3056da JK |
2832 | * points to just header, pull a few bytes of payload from |
2833 | * frags into skb->data */ | |
2834 | hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2)); | |
9f687888 JK |
2835 | if (skb->data_len && (hdr_len == (skb->len - skb->data_len))) { |
2836 | switch (adapter->hw.mac_type) { | |
2837 | unsigned int pull_size; | |
2838 | case e1000_82571: | |
2839 | case e1000_82572: | |
2840 | case e1000_82573: | |
2841 | pull_size = min((unsigned int)4, skb->data_len); | |
2842 | if (!__pskb_pull_tail(skb, pull_size)) { | |
2843 | printk(KERN_ERR | |
2844 | "__pskb_pull_tail failed.\n"); | |
2845 | dev_kfree_skb_any(skb); | |
2846 | return -EFAULT; | |
2847 | } | |
2848 | len = skb->len - skb->data_len; | |
2849 | break; | |
2850 | default: | |
2851 | /* do nothing */ | |
2852 | break; | |
d74bbd3b | 2853 | } |
9a3056da | 2854 | } |
1da177e4 LT |
2855 | } |
2856 | ||
9a3056da | 2857 | /* reserve a descriptor for the offload context */ |
96838a40 | 2858 | if ((mss) || (skb->ip_summed == CHECKSUM_HW)) |
1da177e4 | 2859 | count++; |
2648345f | 2860 | count++; |
1da177e4 | 2861 | #else |
96838a40 | 2862 | if (skb->ip_summed == CHECKSUM_HW) |
1da177e4 LT |
2863 | count++; |
2864 | #endif | |
fd803241 JK |
2865 | |
2866 | #ifdef NETIF_F_TSO | |
2867 | /* Controller Erratum workaround */ | |
2868 | if (!skb->data_len && tx_ring->last_tx_tso && | |
2869 | !skb_shinfo(skb)->tso_size) | |
2870 | count++; | |
2871 | #endif | |
2872 | ||
1da177e4 LT |
2873 | count += TXD_USE_COUNT(len, max_txd_pwr); |
2874 | ||
96838a40 | 2875 | if (adapter->pcix_82544) |
1da177e4 LT |
2876 | count++; |
2877 | ||
96838a40 | 2878 | /* work-around for errata 10 and it applies to all controllers |
97338bde MC |
2879 | * in PCI-X mode, so add one more descriptor to the count |
2880 | */ | |
96838a40 | 2881 | if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && |
97338bde MC |
2882 | (len > 2015))) |
2883 | count++; | |
2884 | ||
1da177e4 | 2885 | nr_frags = skb_shinfo(skb)->nr_frags; |
96838a40 | 2886 | for (f = 0; f < nr_frags; f++) |
1da177e4 LT |
2887 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, |
2888 | max_txd_pwr); | |
96838a40 | 2889 | if (adapter->pcix_82544) |
1da177e4 LT |
2890 | count += nr_frags; |
2891 | ||
96838a40 | 2892 | if (adapter->hw.tx_pkt_filtering && (adapter->hw.mac_type == e1000_82573) ) |
2d7edb92 MC |
2893 | e1000_transfer_dhcp_info(adapter, skb); |
2894 | ||
581d708e MC |
2895 | local_irq_save(flags); |
2896 | if (!spin_trylock(&tx_ring->tx_lock)) { | |
2897 | /* Collision - tell upper layer to requeue */ | |
2898 | local_irq_restore(flags); | |
2899 | return NETDEV_TX_LOCKED; | |
2900 | } | |
1da177e4 LT |
2901 | |
2902 | /* need: count + 2 desc gap to keep tail from touching | |
2903 | * head, otherwise try next time */ | |
581d708e | 2904 | if (unlikely(E1000_DESC_UNUSED(tx_ring) < count + 2)) { |
1da177e4 | 2905 | netif_stop_queue(netdev); |
581d708e | 2906 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
2907 | return NETDEV_TX_BUSY; |
2908 | } | |
2909 | ||
96838a40 JB |
2910 | if (unlikely(adapter->hw.mac_type == e1000_82547)) { |
2911 | if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) { | |
1da177e4 LT |
2912 | netif_stop_queue(netdev); |
2913 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies); | |
581d708e | 2914 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
2915 | return NETDEV_TX_BUSY; |
2916 | } | |
2917 | } | |
2918 | ||
96838a40 | 2919 | if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) { |
1da177e4 LT |
2920 | tx_flags |= E1000_TX_FLAGS_VLAN; |
2921 | tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); | |
2922 | } | |
2923 | ||
581d708e | 2924 | first = tx_ring->next_to_use; |
96838a40 | 2925 | |
581d708e | 2926 | tso = e1000_tso(adapter, tx_ring, skb); |
1da177e4 LT |
2927 | if (tso < 0) { |
2928 | dev_kfree_skb_any(skb); | |
581d708e | 2929 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
2930 | return NETDEV_TX_OK; |
2931 | } | |
2932 | ||
fd803241 JK |
2933 | if (likely(tso)) { |
2934 | tx_ring->last_tx_tso = 1; | |
1da177e4 | 2935 | tx_flags |= E1000_TX_FLAGS_TSO; |
fd803241 | 2936 | } else if (likely(e1000_tx_csum(adapter, tx_ring, skb))) |
1da177e4 LT |
2937 | tx_flags |= E1000_TX_FLAGS_CSUM; |
2938 | ||
2d7edb92 | 2939 | /* Old method was to assume IPv4 packet by default if TSO was enabled. |
868d5309 | 2940 | * 82571 hardware supports TSO capabilities for IPv6 as well... |
2d7edb92 | 2941 | * no longer assume, we must. */ |
581d708e | 2942 | if (likely(skb->protocol == ntohs(ETH_P_IP))) |
2d7edb92 MC |
2943 | tx_flags |= E1000_TX_FLAGS_IPV4; |
2944 | ||
581d708e MC |
2945 | e1000_tx_queue(adapter, tx_ring, tx_flags, |
2946 | e1000_tx_map(adapter, tx_ring, skb, first, | |
2947 | max_per_txd, nr_frags, mss)); | |
1da177e4 LT |
2948 | |
2949 | netdev->trans_start = jiffies; | |
2950 | ||
2951 | /* Make sure there is space in the ring for the next send. */ | |
581d708e | 2952 | if (unlikely(E1000_DESC_UNUSED(tx_ring) < MAX_SKB_FRAGS + 2)) |
1da177e4 LT |
2953 | netif_stop_queue(netdev); |
2954 | ||
581d708e | 2955 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
2956 | return NETDEV_TX_OK; |
2957 | } | |
2958 | ||
2959 | /** | |
2960 | * e1000_tx_timeout - Respond to a Tx Hang | |
2961 | * @netdev: network interface device structure | |
2962 | **/ | |
2963 | ||
2964 | static void | |
2965 | e1000_tx_timeout(struct net_device *netdev) | |
2966 | { | |
60490fe0 | 2967 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2968 | |
2969 | /* Do the reset outside of interrupt context */ | |
87041639 JK |
2970 | adapter->tx_timeout_count++; |
2971 | schedule_work(&adapter->reset_task); | |
1da177e4 LT |
2972 | } |
2973 | ||
2974 | static void | |
87041639 | 2975 | e1000_reset_task(struct net_device *netdev) |
1da177e4 | 2976 | { |
60490fe0 | 2977 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2978 | |
2979 | e1000_down(adapter); | |
2980 | e1000_up(adapter); | |
2981 | } | |
2982 | ||
2983 | /** | |
2984 | * e1000_get_stats - Get System Network Statistics | |
2985 | * @netdev: network interface device structure | |
2986 | * | |
2987 | * Returns the address of the device statistics structure. | |
2988 | * The statistics are actually updated from the timer callback. | |
2989 | **/ | |
2990 | ||
2991 | static struct net_device_stats * | |
2992 | e1000_get_stats(struct net_device *netdev) | |
2993 | { | |
60490fe0 | 2994 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 2995 | |
6b7660cd | 2996 | /* only return the current stats */ |
1da177e4 LT |
2997 | return &adapter->net_stats; |
2998 | } | |
2999 | ||
3000 | /** | |
3001 | * e1000_change_mtu - Change the Maximum Transfer Unit | |
3002 | * @netdev: network interface device structure | |
3003 | * @new_mtu: new value for maximum frame size | |
3004 | * | |
3005 | * Returns 0 on success, negative on failure | |
3006 | **/ | |
3007 | ||
3008 | static int | |
3009 | e1000_change_mtu(struct net_device *netdev, int new_mtu) | |
3010 | { | |
60490fe0 | 3011 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3012 | int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
85b22eb6 | 3013 | uint16_t eeprom_data = 0; |
1da177e4 | 3014 | |
96838a40 JB |
3015 | if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || |
3016 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
3017 | DPRINTK(PROBE, ERR, "Invalid MTU setting\n"); | |
1da177e4 | 3018 | return -EINVAL; |
2d7edb92 | 3019 | } |
1da177e4 | 3020 | |
997f5cbd JK |
3021 | /* Adapter-specific max frame size limits. */ |
3022 | switch (adapter->hw.mac_type) { | |
3023 | case e1000_82542_rev2_0: | |
3024 | case e1000_82542_rev2_1: | |
997f5cbd JK |
3025 | if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) { |
3026 | DPRINTK(PROBE, ERR, "Jumbo Frames not supported.\n"); | |
2d7edb92 | 3027 | return -EINVAL; |
2d7edb92 | 3028 | } |
997f5cbd | 3029 | break; |
85b22eb6 JK |
3030 | case e1000_82573: |
3031 | /* only enable jumbo frames if ASPM is disabled completely | |
3032 | * this means both bits must be zero in 0x1A bits 3:2 */ | |
3033 | e1000_read_eeprom(&adapter->hw, EEPROM_INIT_3GIO_3, 1, | |
3034 | &eeprom_data); | |
3035 | if (eeprom_data & EEPROM_WORD1A_ASPM_MASK) { | |
3036 | if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) { | |
3037 | DPRINTK(PROBE, ERR, | |
3038 | "Jumbo Frames not supported.\n"); | |
3039 | return -EINVAL; | |
3040 | } | |
3041 | break; | |
3042 | } | |
3043 | /* fall through to get support */ | |
997f5cbd JK |
3044 | case e1000_82571: |
3045 | case e1000_82572: | |
87041639 | 3046 | case e1000_80003es2lan: |
997f5cbd JK |
3047 | #define MAX_STD_JUMBO_FRAME_SIZE 9234 |
3048 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { | |
3049 | DPRINTK(PROBE, ERR, "MTU > 9216 not supported.\n"); | |
3050 | return -EINVAL; | |
3051 | } | |
3052 | break; | |
3053 | default: | |
3054 | /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */ | |
3055 | break; | |
1da177e4 LT |
3056 | } |
3057 | ||
997f5cbd | 3058 | |
997f5cbd | 3059 | if (adapter->hw.mac_type > e1000_82547_rev_2) { |
a1415ee6 | 3060 | adapter->rx_buffer_len = max_frame; |
997f5cbd | 3061 | E1000_ROUNDUP(adapter->rx_buffer_len, 1024); |
a1415ee6 JK |
3062 | } else { |
3063 | if(unlikely((adapter->hw.mac_type < e1000_82543) && | |
3064 | (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE))) { | |
3065 | DPRINTK(PROBE, ERR, "Jumbo Frames not supported " | |
3066 | "on 82542\n"); | |
3067 | return -EINVAL; | |
3068 | } else { | |
3069 | if(max_frame <= E1000_RXBUFFER_2048) | |
3070 | adapter->rx_buffer_len = E1000_RXBUFFER_2048; | |
3071 | else if(max_frame <= E1000_RXBUFFER_4096) | |
3072 | adapter->rx_buffer_len = E1000_RXBUFFER_4096; | |
3073 | else if(max_frame <= E1000_RXBUFFER_8192) | |
3074 | adapter->rx_buffer_len = E1000_RXBUFFER_8192; | |
3075 | else if(max_frame <= E1000_RXBUFFER_16384) | |
3076 | adapter->rx_buffer_len = E1000_RXBUFFER_16384; | |
3077 | } | |
3078 | } | |
997f5cbd | 3079 | |
2d7edb92 MC |
3080 | netdev->mtu = new_mtu; |
3081 | ||
96838a40 | 3082 | if (netif_running(netdev)) { |
1da177e4 LT |
3083 | e1000_down(adapter); |
3084 | e1000_up(adapter); | |
3085 | } | |
3086 | ||
1da177e4 LT |
3087 | adapter->hw.max_frame_size = max_frame; |
3088 | ||
3089 | return 0; | |
3090 | } | |
3091 | ||
3092 | /** | |
3093 | * e1000_update_stats - Update the board statistics counters | |
3094 | * @adapter: board private structure | |
3095 | **/ | |
3096 | ||
3097 | void | |
3098 | e1000_update_stats(struct e1000_adapter *adapter) | |
3099 | { | |
3100 | struct e1000_hw *hw = &adapter->hw; | |
3101 | unsigned long flags; | |
3102 | uint16_t phy_tmp; | |
3103 | ||
3104 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF | |
3105 | ||
3106 | spin_lock_irqsave(&adapter->stats_lock, flags); | |
3107 | ||
3108 | /* these counters are modified from e1000_adjust_tbi_stats, | |
3109 | * called from the interrupt context, so they must only | |
3110 | * be written while holding adapter->stats_lock | |
3111 | */ | |
3112 | ||
3113 | adapter->stats.crcerrs += E1000_READ_REG(hw, CRCERRS); | |
3114 | adapter->stats.gprc += E1000_READ_REG(hw, GPRC); | |
3115 | adapter->stats.gorcl += E1000_READ_REG(hw, GORCL); | |
3116 | adapter->stats.gorch += E1000_READ_REG(hw, GORCH); | |
3117 | adapter->stats.bprc += E1000_READ_REG(hw, BPRC); | |
3118 | adapter->stats.mprc += E1000_READ_REG(hw, MPRC); | |
3119 | adapter->stats.roc += E1000_READ_REG(hw, ROC); | |
3120 | adapter->stats.prc64 += E1000_READ_REG(hw, PRC64); | |
3121 | adapter->stats.prc127 += E1000_READ_REG(hw, PRC127); | |
3122 | adapter->stats.prc255 += E1000_READ_REG(hw, PRC255); | |
3123 | adapter->stats.prc511 += E1000_READ_REG(hw, PRC511); | |
3124 | adapter->stats.prc1023 += E1000_READ_REG(hw, PRC1023); | |
3125 | adapter->stats.prc1522 += E1000_READ_REG(hw, PRC1522); | |
3126 | ||
3127 | adapter->stats.symerrs += E1000_READ_REG(hw, SYMERRS); | |
3128 | adapter->stats.mpc += E1000_READ_REG(hw, MPC); | |
3129 | adapter->stats.scc += E1000_READ_REG(hw, SCC); | |
3130 | adapter->stats.ecol += E1000_READ_REG(hw, ECOL); | |
3131 | adapter->stats.mcc += E1000_READ_REG(hw, MCC); | |
3132 | adapter->stats.latecol += E1000_READ_REG(hw, LATECOL); | |
3133 | adapter->stats.dc += E1000_READ_REG(hw, DC); | |
3134 | adapter->stats.sec += E1000_READ_REG(hw, SEC); | |
3135 | adapter->stats.rlec += E1000_READ_REG(hw, RLEC); | |
3136 | adapter->stats.xonrxc += E1000_READ_REG(hw, XONRXC); | |
3137 | adapter->stats.xontxc += E1000_READ_REG(hw, XONTXC); | |
3138 | adapter->stats.xoffrxc += E1000_READ_REG(hw, XOFFRXC); | |
3139 | adapter->stats.xofftxc += E1000_READ_REG(hw, XOFFTXC); | |
3140 | adapter->stats.fcruc += E1000_READ_REG(hw, FCRUC); | |
3141 | adapter->stats.gptc += E1000_READ_REG(hw, GPTC); | |
3142 | adapter->stats.gotcl += E1000_READ_REG(hw, GOTCL); | |
3143 | adapter->stats.gotch += E1000_READ_REG(hw, GOTCH); | |
3144 | adapter->stats.rnbc += E1000_READ_REG(hw, RNBC); | |
3145 | adapter->stats.ruc += E1000_READ_REG(hw, RUC); | |
3146 | adapter->stats.rfc += E1000_READ_REG(hw, RFC); | |
3147 | adapter->stats.rjc += E1000_READ_REG(hw, RJC); | |
3148 | adapter->stats.torl += E1000_READ_REG(hw, TORL); | |
3149 | adapter->stats.torh += E1000_READ_REG(hw, TORH); | |
3150 | adapter->stats.totl += E1000_READ_REG(hw, TOTL); | |
3151 | adapter->stats.toth += E1000_READ_REG(hw, TOTH); | |
3152 | adapter->stats.tpr += E1000_READ_REG(hw, TPR); | |
3153 | adapter->stats.ptc64 += E1000_READ_REG(hw, PTC64); | |
3154 | adapter->stats.ptc127 += E1000_READ_REG(hw, PTC127); | |
3155 | adapter->stats.ptc255 += E1000_READ_REG(hw, PTC255); | |
3156 | adapter->stats.ptc511 += E1000_READ_REG(hw, PTC511); | |
3157 | adapter->stats.ptc1023 += E1000_READ_REG(hw, PTC1023); | |
3158 | adapter->stats.ptc1522 += E1000_READ_REG(hw, PTC1522); | |
3159 | adapter->stats.mptc += E1000_READ_REG(hw, MPTC); | |
3160 | adapter->stats.bptc += E1000_READ_REG(hw, BPTC); | |
3161 | ||
3162 | /* used for adaptive IFS */ | |
3163 | ||
3164 | hw->tx_packet_delta = E1000_READ_REG(hw, TPT); | |
3165 | adapter->stats.tpt += hw->tx_packet_delta; | |
3166 | hw->collision_delta = E1000_READ_REG(hw, COLC); | |
3167 | adapter->stats.colc += hw->collision_delta; | |
3168 | ||
96838a40 | 3169 | if (hw->mac_type >= e1000_82543) { |
1da177e4 LT |
3170 | adapter->stats.algnerrc += E1000_READ_REG(hw, ALGNERRC); |
3171 | adapter->stats.rxerrc += E1000_READ_REG(hw, RXERRC); | |
3172 | adapter->stats.tncrs += E1000_READ_REG(hw, TNCRS); | |
3173 | adapter->stats.cexterr += E1000_READ_REG(hw, CEXTERR); | |
3174 | adapter->stats.tsctc += E1000_READ_REG(hw, TSCTC); | |
3175 | adapter->stats.tsctfc += E1000_READ_REG(hw, TSCTFC); | |
3176 | } | |
96838a40 | 3177 | if (hw->mac_type > e1000_82547_rev_2) { |
2d7edb92 MC |
3178 | adapter->stats.iac += E1000_READ_REG(hw, IAC); |
3179 | adapter->stats.icrxoc += E1000_READ_REG(hw, ICRXOC); | |
3180 | adapter->stats.icrxptc += E1000_READ_REG(hw, ICRXPTC); | |
3181 | adapter->stats.icrxatc += E1000_READ_REG(hw, ICRXATC); | |
3182 | adapter->stats.ictxptc += E1000_READ_REG(hw, ICTXPTC); | |
3183 | adapter->stats.ictxatc += E1000_READ_REG(hw, ICTXATC); | |
3184 | adapter->stats.ictxqec += E1000_READ_REG(hw, ICTXQEC); | |
3185 | adapter->stats.ictxqmtc += E1000_READ_REG(hw, ICTXQMTC); | |
3186 | adapter->stats.icrxdmtc += E1000_READ_REG(hw, ICRXDMTC); | |
3187 | } | |
1da177e4 LT |
3188 | |
3189 | /* Fill out the OS statistics structure */ | |
3190 | ||
3191 | adapter->net_stats.rx_packets = adapter->stats.gprc; | |
3192 | adapter->net_stats.tx_packets = adapter->stats.gptc; | |
3193 | adapter->net_stats.rx_bytes = adapter->stats.gorcl; | |
3194 | adapter->net_stats.tx_bytes = adapter->stats.gotcl; | |
3195 | adapter->net_stats.multicast = adapter->stats.mprc; | |
3196 | adapter->net_stats.collisions = adapter->stats.colc; | |
3197 | ||
3198 | /* Rx Errors */ | |
3199 | ||
87041639 JK |
3200 | /* RLEC on some newer hardware can be incorrect so build |
3201 | * our own version based on RUC and ROC */ | |
1da177e4 LT |
3202 | adapter->net_stats.rx_errors = adapter->stats.rxerrc + |
3203 | adapter->stats.crcerrs + adapter->stats.algnerrc + | |
87041639 JK |
3204 | adapter->stats.ruc + adapter->stats.roc + |
3205 | adapter->stats.cexterr; | |
6b7660cd | 3206 | adapter->net_stats.rx_dropped = 0; |
87041639 JK |
3207 | adapter->net_stats.rx_length_errors = adapter->stats.ruc + |
3208 | adapter->stats.roc; | |
1da177e4 LT |
3209 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; |
3210 | adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; | |
1da177e4 LT |
3211 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; |
3212 | ||
3213 | /* Tx Errors */ | |
3214 | ||
3215 | adapter->net_stats.tx_errors = adapter->stats.ecol + | |
3216 | adapter->stats.latecol; | |
3217 | adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; | |
3218 | adapter->net_stats.tx_window_errors = adapter->stats.latecol; | |
3219 | adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; | |
3220 | ||
3221 | /* Tx Dropped needs to be maintained elsewhere */ | |
3222 | ||
3223 | /* Phy Stats */ | |
3224 | ||
96838a40 JB |
3225 | if (hw->media_type == e1000_media_type_copper) { |
3226 | if ((adapter->link_speed == SPEED_1000) && | |
1da177e4 LT |
3227 | (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
3228 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; | |
3229 | adapter->phy_stats.idle_errors += phy_tmp; | |
3230 | } | |
3231 | ||
96838a40 | 3232 | if ((hw->mac_type <= e1000_82546) && |
1da177e4 LT |
3233 | (hw->phy_type == e1000_phy_m88) && |
3234 | !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) | |
3235 | adapter->phy_stats.receive_errors += phy_tmp; | |
3236 | } | |
3237 | ||
3238 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
3239 | } | |
3240 | ||
3241 | /** | |
3242 | * e1000_intr - Interrupt Handler | |
3243 | * @irq: interrupt number | |
3244 | * @data: pointer to a network interface device structure | |
3245 | * @pt_regs: CPU registers structure | |
3246 | **/ | |
3247 | ||
3248 | static irqreturn_t | |
3249 | e1000_intr(int irq, void *data, struct pt_regs *regs) | |
3250 | { | |
3251 | struct net_device *netdev = data; | |
60490fe0 | 3252 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3253 | struct e1000_hw *hw = &adapter->hw; |
87041639 | 3254 | uint32_t rctl, icr = E1000_READ_REG(hw, ICR); |
1e613fd9 | 3255 | #ifndef CONFIG_E1000_NAPI |
581d708e | 3256 | int i; |
1e613fd9 JK |
3257 | #else |
3258 | /* Interrupt Auto-Mask...upon reading ICR, | |
3259 | * interrupts are masked. No need for the | |
3260 | * IMC write, but it does mean we should | |
3261 | * account for it ASAP. */ | |
3262 | if (likely(hw->mac_type >= e1000_82571)) | |
3263 | atomic_inc(&adapter->irq_sem); | |
be2b28ed | 3264 | #endif |
1da177e4 | 3265 | |
1e613fd9 JK |
3266 | if (unlikely(!icr)) { |
3267 | #ifdef CONFIG_E1000_NAPI | |
3268 | if (hw->mac_type >= e1000_82571) | |
3269 | e1000_irq_enable(adapter); | |
3270 | #endif | |
1da177e4 | 3271 | return IRQ_NONE; /* Not our interrupt */ |
1e613fd9 | 3272 | } |
1da177e4 | 3273 | |
96838a40 | 3274 | if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { |
1da177e4 | 3275 | hw->get_link_status = 1; |
87041639 JK |
3276 | /* 80003ES2LAN workaround-- |
3277 | * For packet buffer work-around on link down event; | |
3278 | * disable receives here in the ISR and | |
3279 | * reset adapter in watchdog | |
3280 | */ | |
3281 | if (netif_carrier_ok(netdev) && | |
3282 | (adapter->hw.mac_type == e1000_80003es2lan)) { | |
3283 | /* disable receives */ | |
3284 | rctl = E1000_READ_REG(hw, RCTL); | |
3285 | E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); | |
3286 | } | |
1da177e4 LT |
3287 | mod_timer(&adapter->watchdog_timer, jiffies); |
3288 | } | |
3289 | ||
3290 | #ifdef CONFIG_E1000_NAPI | |
1e613fd9 JK |
3291 | if (unlikely(hw->mac_type < e1000_82571)) { |
3292 | atomic_inc(&adapter->irq_sem); | |
3293 | E1000_WRITE_REG(hw, IMC, ~0); | |
3294 | E1000_WRITE_FLUSH(hw); | |
3295 | } | |
581d708e MC |
3296 | if (likely(netif_rx_schedule_prep(&adapter->polling_netdev[0]))) |
3297 | __netif_rx_schedule(&adapter->polling_netdev[0]); | |
3298 | else | |
3299 | e1000_irq_enable(adapter); | |
c1605eb3 | 3300 | #else |
1da177e4 | 3301 | /* Writing IMC and IMS is needed for 82547. |
96838a40 JB |
3302 | * Due to Hub Link bus being occupied, an interrupt |
3303 | * de-assertion message is not able to be sent. | |
3304 | * When an interrupt assertion message is generated later, | |
3305 | * two messages are re-ordered and sent out. | |
3306 | * That causes APIC to think 82547 is in de-assertion | |
3307 | * state, while 82547 is in assertion state, resulting | |
3308 | * in dead lock. Writing IMC forces 82547 into | |
3309 | * de-assertion state. | |
3310 | */ | |
3311 | if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) { | |
1da177e4 | 3312 | atomic_inc(&adapter->irq_sem); |
2648345f | 3313 | E1000_WRITE_REG(hw, IMC, ~0); |
1da177e4 LT |
3314 | } |
3315 | ||
96838a40 JB |
3316 | for (i = 0; i < E1000_MAX_INTR; i++) |
3317 | if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) & | |
581d708e | 3318 | !e1000_clean_tx_irq(adapter, adapter->tx_ring))) |
1da177e4 LT |
3319 | break; |
3320 | ||
96838a40 | 3321 | if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) |
1da177e4 | 3322 | e1000_irq_enable(adapter); |
581d708e | 3323 | |
c1605eb3 | 3324 | #endif |
1da177e4 LT |
3325 | |
3326 | return IRQ_HANDLED; | |
3327 | } | |
3328 | ||
3329 | #ifdef CONFIG_E1000_NAPI | |
3330 | /** | |
3331 | * e1000_clean - NAPI Rx polling callback | |
3332 | * @adapter: board private structure | |
3333 | **/ | |
3334 | ||
3335 | static int | |
581d708e | 3336 | e1000_clean(struct net_device *poll_dev, int *budget) |
1da177e4 | 3337 | { |
581d708e MC |
3338 | struct e1000_adapter *adapter; |
3339 | int work_to_do = min(*budget, poll_dev->quota); | |
38bd3b26 | 3340 | int tx_cleaned = 0, i = 0, work_done = 0; |
581d708e MC |
3341 | |
3342 | /* Must NOT use netdev_priv macro here. */ | |
3343 | adapter = poll_dev->priv; | |
3344 | ||
3345 | /* Keep link state information with original netdev */ | |
3346 | if (!netif_carrier_ok(adapter->netdev)) | |
3347 | goto quit_polling; | |
2648345f | 3348 | |
581d708e MC |
3349 | while (poll_dev != &adapter->polling_netdev[i]) { |
3350 | i++; | |
f56799ea | 3351 | if (unlikely(i == adapter->num_rx_queues)) |
581d708e MC |
3352 | BUG(); |
3353 | } | |
3354 | ||
8241e35e JK |
3355 | if (likely(adapter->num_tx_queues == 1)) { |
3356 | /* e1000_clean is called per-cpu. This lock protects | |
3357 | * tx_ring[0] from being cleaned by multiple cpus | |
3358 | * simultaneously. A failure obtaining the lock means | |
3359 | * tx_ring[0] is currently being cleaned anyway. */ | |
3360 | if (spin_trylock(&adapter->tx_queue_lock)) { | |
3361 | tx_cleaned = e1000_clean_tx_irq(adapter, | |
3362 | &adapter->tx_ring[0]); | |
3363 | spin_unlock(&adapter->tx_queue_lock); | |
3364 | } | |
3365 | } else | |
3366 | tx_cleaned = e1000_clean_tx_irq(adapter, &adapter->tx_ring[i]); | |
3367 | ||
581d708e MC |
3368 | adapter->clean_rx(adapter, &adapter->rx_ring[i], |
3369 | &work_done, work_to_do); | |
1da177e4 LT |
3370 | |
3371 | *budget -= work_done; | |
581d708e | 3372 | poll_dev->quota -= work_done; |
96838a40 | 3373 | |
2b02893e | 3374 | /* If no Tx and not enough Rx work done, exit the polling mode */ |
96838a40 | 3375 | if ((!tx_cleaned && (work_done == 0)) || |
581d708e MC |
3376 | !netif_running(adapter->netdev)) { |
3377 | quit_polling: | |
3378 | netif_rx_complete(poll_dev); | |
1da177e4 LT |
3379 | e1000_irq_enable(adapter); |
3380 | return 0; | |
3381 | } | |
3382 | ||
3383 | return 1; | |
3384 | } | |
3385 | ||
3386 | #endif | |
3387 | /** | |
3388 | * e1000_clean_tx_irq - Reclaim resources after transmit completes | |
3389 | * @adapter: board private structure | |
3390 | **/ | |
3391 | ||
3392 | static boolean_t | |
581d708e MC |
3393 | e1000_clean_tx_irq(struct e1000_adapter *adapter, |
3394 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 3395 | { |
1da177e4 LT |
3396 | struct net_device *netdev = adapter->netdev; |
3397 | struct e1000_tx_desc *tx_desc, *eop_desc; | |
3398 | struct e1000_buffer *buffer_info; | |
3399 | unsigned int i, eop; | |
2a1af5d7 JK |
3400 | #ifdef CONFIG_E1000_NAPI |
3401 | unsigned int count = 0; | |
3402 | #endif | |
1da177e4 LT |
3403 | boolean_t cleaned = FALSE; |
3404 | ||
3405 | i = tx_ring->next_to_clean; | |
3406 | eop = tx_ring->buffer_info[i].next_to_watch; | |
3407 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
3408 | ||
581d708e | 3409 | while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) { |
96838a40 | 3410 | for (cleaned = FALSE; !cleaned; ) { |
1da177e4 LT |
3411 | tx_desc = E1000_TX_DESC(*tx_ring, i); |
3412 | buffer_info = &tx_ring->buffer_info[i]; | |
3413 | cleaned = (i == eop); | |
3414 | ||
fd803241 | 3415 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
8241e35e | 3416 | memset(tx_desc, 0, sizeof(struct e1000_tx_desc)); |
1da177e4 | 3417 | |
96838a40 | 3418 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 | 3419 | } |
581d708e | 3420 | |
7bfa4816 | 3421 | |
1da177e4 LT |
3422 | eop = tx_ring->buffer_info[i].next_to_watch; |
3423 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
2a1af5d7 JK |
3424 | #ifdef CONFIG_E1000_NAPI |
3425 | #define E1000_TX_WEIGHT 64 | |
3426 | /* weight of a sort for tx, to avoid endless transmit cleanup */ | |
3427 | if (count++ == E1000_TX_WEIGHT) break; | |
3428 | #endif | |
1da177e4 LT |
3429 | } |
3430 | ||
3431 | tx_ring->next_to_clean = i; | |
3432 | ||
581d708e | 3433 | spin_lock(&tx_ring->tx_lock); |
1da177e4 | 3434 | |
96838a40 | 3435 | if (unlikely(cleaned && netif_queue_stopped(netdev) && |
1da177e4 LT |
3436 | netif_carrier_ok(netdev))) |
3437 | netif_wake_queue(netdev); | |
3438 | ||
581d708e | 3439 | spin_unlock(&tx_ring->tx_lock); |
2648345f | 3440 | |
581d708e | 3441 | if (adapter->detect_tx_hung) { |
2648345f | 3442 | /* Detect a transmit hang in hardware, this serializes the |
1da177e4 LT |
3443 | * check with the clearing of time_stamp and movement of i */ |
3444 | adapter->detect_tx_hung = FALSE; | |
392137fa JK |
3445 | if (tx_ring->buffer_info[eop].dma && |
3446 | time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + | |
7e6c9861 | 3447 | (adapter->tx_timeout_factor * HZ)) |
70b8f1e1 | 3448 | && !(E1000_READ_REG(&adapter->hw, STATUS) & |
392137fa | 3449 | E1000_STATUS_TXOFF)) { |
70b8f1e1 MC |
3450 | |
3451 | /* detected Tx unit hang */ | |
c6963ef5 | 3452 | DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" |
7bfa4816 | 3453 | " Tx Queue <%lu>\n" |
70b8f1e1 MC |
3454 | " TDH <%x>\n" |
3455 | " TDT <%x>\n" | |
3456 | " next_to_use <%x>\n" | |
3457 | " next_to_clean <%x>\n" | |
3458 | "buffer_info[next_to_clean]\n" | |
70b8f1e1 MC |
3459 | " time_stamp <%lx>\n" |
3460 | " next_to_watch <%x>\n" | |
3461 | " jiffies <%lx>\n" | |
3462 | " next_to_watch.status <%x>\n", | |
7bfa4816 JK |
3463 | (unsigned long)((tx_ring - adapter->tx_ring) / |
3464 | sizeof(struct e1000_tx_ring)), | |
581d708e MC |
3465 | readl(adapter->hw.hw_addr + tx_ring->tdh), |
3466 | readl(adapter->hw.hw_addr + tx_ring->tdt), | |
70b8f1e1 | 3467 | tx_ring->next_to_use, |
392137fa JK |
3468 | tx_ring->next_to_clean, |
3469 | tx_ring->buffer_info[eop].time_stamp, | |
70b8f1e1 MC |
3470 | eop, |
3471 | jiffies, | |
3472 | eop_desc->upper.fields.status); | |
1da177e4 | 3473 | netif_stop_queue(netdev); |
70b8f1e1 | 3474 | } |
1da177e4 | 3475 | } |
1da177e4 LT |
3476 | return cleaned; |
3477 | } | |
3478 | ||
3479 | /** | |
3480 | * e1000_rx_checksum - Receive Checksum Offload for 82543 | |
2d7edb92 MC |
3481 | * @adapter: board private structure |
3482 | * @status_err: receive descriptor status and error fields | |
3483 | * @csum: receive descriptor csum field | |
3484 | * @sk_buff: socket buffer with received data | |
1da177e4 LT |
3485 | **/ |
3486 | ||
3487 | static inline void | |
3488 | e1000_rx_checksum(struct e1000_adapter *adapter, | |
2d7edb92 MC |
3489 | uint32_t status_err, uint32_t csum, |
3490 | struct sk_buff *skb) | |
1da177e4 | 3491 | { |
2d7edb92 MC |
3492 | uint16_t status = (uint16_t)status_err; |
3493 | uint8_t errors = (uint8_t)(status_err >> 24); | |
3494 | skb->ip_summed = CHECKSUM_NONE; | |
3495 | ||
1da177e4 | 3496 | /* 82543 or newer only */ |
96838a40 | 3497 | if (unlikely(adapter->hw.mac_type < e1000_82543)) return; |
1da177e4 | 3498 | /* Ignore Checksum bit is set */ |
96838a40 | 3499 | if (unlikely(status & E1000_RXD_STAT_IXSM)) return; |
2d7edb92 | 3500 | /* TCP/UDP checksum error bit is set */ |
96838a40 | 3501 | if (unlikely(errors & E1000_RXD_ERR_TCPE)) { |
1da177e4 | 3502 | /* let the stack verify checksum errors */ |
1da177e4 | 3503 | adapter->hw_csum_err++; |
2d7edb92 MC |
3504 | return; |
3505 | } | |
3506 | /* TCP/UDP Checksum has not been calculated */ | |
96838a40 JB |
3507 | if (adapter->hw.mac_type <= e1000_82547_rev_2) { |
3508 | if (!(status & E1000_RXD_STAT_TCPCS)) | |
2d7edb92 | 3509 | return; |
1da177e4 | 3510 | } else { |
96838a40 | 3511 | if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) |
2d7edb92 MC |
3512 | return; |
3513 | } | |
3514 | /* It must be a TCP or UDP packet with a valid checksum */ | |
3515 | if (likely(status & E1000_RXD_STAT_TCPCS)) { | |
1da177e4 LT |
3516 | /* TCP checksum is good */ |
3517 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
2d7edb92 MC |
3518 | } else if (adapter->hw.mac_type > e1000_82547_rev_2) { |
3519 | /* IP fragment with UDP payload */ | |
3520 | /* Hardware complements the payload checksum, so we undo it | |
3521 | * and then put the value in host order for further stack use. | |
3522 | */ | |
3523 | csum = ntohl(csum ^ 0xFFFF); | |
3524 | skb->csum = csum; | |
3525 | skb->ip_summed = CHECKSUM_HW; | |
1da177e4 | 3526 | } |
2d7edb92 | 3527 | adapter->hw_csum_good++; |
1da177e4 LT |
3528 | } |
3529 | ||
3530 | /** | |
2d7edb92 | 3531 | * e1000_clean_rx_irq - Send received data up the network stack; legacy |
1da177e4 LT |
3532 | * @adapter: board private structure |
3533 | **/ | |
3534 | ||
3535 | static boolean_t | |
3536 | #ifdef CONFIG_E1000_NAPI | |
581d708e MC |
3537 | e1000_clean_rx_irq(struct e1000_adapter *adapter, |
3538 | struct e1000_rx_ring *rx_ring, | |
3539 | int *work_done, int work_to_do) | |
1da177e4 | 3540 | #else |
581d708e MC |
3541 | e1000_clean_rx_irq(struct e1000_adapter *adapter, |
3542 | struct e1000_rx_ring *rx_ring) | |
1da177e4 LT |
3543 | #endif |
3544 | { | |
1da177e4 LT |
3545 | struct net_device *netdev = adapter->netdev; |
3546 | struct pci_dev *pdev = adapter->pdev; | |
86c3d59f JB |
3547 | struct e1000_rx_desc *rx_desc, *next_rxd; |
3548 | struct e1000_buffer *buffer_info, *next_buffer; | |
1da177e4 LT |
3549 | unsigned long flags; |
3550 | uint32_t length; | |
3551 | uint8_t last_byte; | |
3552 | unsigned int i; | |
72d64a43 | 3553 | int cleaned_count = 0; |
a1415ee6 | 3554 | boolean_t cleaned = FALSE; |
1da177e4 LT |
3555 | |
3556 | i = rx_ring->next_to_clean; | |
3557 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
b92ff8ee | 3558 | buffer_info = &rx_ring->buffer_info[i]; |
1da177e4 | 3559 | |
b92ff8ee | 3560 | while (rx_desc->status & E1000_RXD_STAT_DD) { |
86c3d59f | 3561 | struct sk_buff *skb, *next_skb; |
a292ca6e | 3562 | u8 status; |
1da177e4 | 3563 | #ifdef CONFIG_E1000_NAPI |
96838a40 | 3564 | if (*work_done >= work_to_do) |
1da177e4 LT |
3565 | break; |
3566 | (*work_done)++; | |
3567 | #endif | |
a292ca6e | 3568 | status = rx_desc->status; |
b92ff8ee | 3569 | skb = buffer_info->skb; |
86c3d59f JB |
3570 | buffer_info->skb = NULL; |
3571 | ||
30320be8 JK |
3572 | prefetch(skb->data - NET_IP_ALIGN); |
3573 | ||
86c3d59f JB |
3574 | if (++i == rx_ring->count) i = 0; |
3575 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
30320be8 JK |
3576 | prefetch(next_rxd); |
3577 | ||
86c3d59f JB |
3578 | next_buffer = &rx_ring->buffer_info[i]; |
3579 | next_skb = next_buffer->skb; | |
30320be8 | 3580 | prefetch(next_skb->data - NET_IP_ALIGN); |
86c3d59f | 3581 | |
72d64a43 JK |
3582 | cleaned = TRUE; |
3583 | cleaned_count++; | |
a292ca6e JK |
3584 | pci_unmap_single(pdev, |
3585 | buffer_info->dma, | |
3586 | buffer_info->length, | |
1da177e4 LT |
3587 | PCI_DMA_FROMDEVICE); |
3588 | ||
1da177e4 LT |
3589 | length = le16_to_cpu(rx_desc->length); |
3590 | ||
a1415ee6 JK |
3591 | if (unlikely(!(status & E1000_RXD_STAT_EOP))) { |
3592 | /* All receives must fit into a single buffer */ | |
3593 | E1000_DBG("%s: Receive packet consumed multiple" | |
3594 | " buffers\n", netdev->name); | |
3595 | dev_kfree_skb_irq(skb); | |
1da177e4 LT |
3596 | goto next_desc; |
3597 | } | |
3598 | ||
96838a40 | 3599 | if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { |
1da177e4 | 3600 | last_byte = *(skb->data + length - 1); |
b92ff8ee | 3601 | if (TBI_ACCEPT(&adapter->hw, status, |
1da177e4 LT |
3602 | rx_desc->errors, length, last_byte)) { |
3603 | spin_lock_irqsave(&adapter->stats_lock, flags); | |
a292ca6e JK |
3604 | e1000_tbi_adjust_stats(&adapter->hw, |
3605 | &adapter->stats, | |
1da177e4 LT |
3606 | length, skb->data); |
3607 | spin_unlock_irqrestore(&adapter->stats_lock, | |
3608 | flags); | |
3609 | length--; | |
3610 | } else { | |
3611 | dev_kfree_skb_irq(skb); | |
3612 | goto next_desc; | |
3613 | } | |
3614 | } | |
3615 | ||
a292ca6e JK |
3616 | /* code added for copybreak, this should improve |
3617 | * performance for small packets with large amounts | |
3618 | * of reassembly being done in the stack */ | |
3619 | #define E1000_CB_LENGTH 256 | |
a1415ee6 | 3620 | if (length < E1000_CB_LENGTH) { |
a292ca6e JK |
3621 | struct sk_buff *new_skb = |
3622 | dev_alloc_skb(length + NET_IP_ALIGN); | |
3623 | if (new_skb) { | |
3624 | skb_reserve(new_skb, NET_IP_ALIGN); | |
3625 | new_skb->dev = netdev; | |
3626 | memcpy(new_skb->data - NET_IP_ALIGN, | |
3627 | skb->data - NET_IP_ALIGN, | |
3628 | length + NET_IP_ALIGN); | |
3629 | /* save the skb in buffer_info as good */ | |
3630 | buffer_info->skb = skb; | |
3631 | skb = new_skb; | |
3632 | skb_put(skb, length); | |
3633 | } | |
a1415ee6 JK |
3634 | } else |
3635 | skb_put(skb, length); | |
a292ca6e JK |
3636 | |
3637 | /* end copybreak code */ | |
1da177e4 LT |
3638 | |
3639 | /* Receive Checksum Offload */ | |
a292ca6e JK |
3640 | e1000_rx_checksum(adapter, |
3641 | (uint32_t)(status) | | |
2d7edb92 MC |
3642 | ((uint32_t)(rx_desc->errors) << 24), |
3643 | rx_desc->csum, skb); | |
96838a40 | 3644 | |
1da177e4 LT |
3645 | skb->protocol = eth_type_trans(skb, netdev); |
3646 | #ifdef CONFIG_E1000_NAPI | |
96838a40 | 3647 | if (unlikely(adapter->vlgrp && |
a292ca6e | 3648 | (status & E1000_RXD_STAT_VP))) { |
1da177e4 | 3649 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
2d7edb92 MC |
3650 | le16_to_cpu(rx_desc->special) & |
3651 | E1000_RXD_SPC_VLAN_MASK); | |
1da177e4 LT |
3652 | } else { |
3653 | netif_receive_skb(skb); | |
3654 | } | |
3655 | #else /* CONFIG_E1000_NAPI */ | |
96838a40 | 3656 | if (unlikely(adapter->vlgrp && |
b92ff8ee | 3657 | (status & E1000_RXD_STAT_VP))) { |
1da177e4 LT |
3658 | vlan_hwaccel_rx(skb, adapter->vlgrp, |
3659 | le16_to_cpu(rx_desc->special) & | |
3660 | E1000_RXD_SPC_VLAN_MASK); | |
3661 | } else { | |
3662 | netif_rx(skb); | |
3663 | } | |
3664 | #endif /* CONFIG_E1000_NAPI */ | |
3665 | netdev->last_rx = jiffies; | |
3666 | ||
3667 | next_desc: | |
3668 | rx_desc->status = 0; | |
1da177e4 | 3669 | |
72d64a43 JK |
3670 | /* return some buffers to hardware, one at a time is too slow */ |
3671 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
3672 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
3673 | cleaned_count = 0; | |
3674 | } | |
3675 | ||
30320be8 | 3676 | /* use prefetched values */ |
86c3d59f JB |
3677 | rx_desc = next_rxd; |
3678 | buffer_info = next_buffer; | |
1da177e4 | 3679 | } |
1da177e4 | 3680 | rx_ring->next_to_clean = i; |
72d64a43 JK |
3681 | |
3682 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
3683 | if (cleaned_count) | |
3684 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
2d7edb92 MC |
3685 | |
3686 | return cleaned; | |
3687 | } | |
3688 | ||
3689 | /** | |
3690 | * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split | |
3691 | * @adapter: board private structure | |
3692 | **/ | |
3693 | ||
3694 | static boolean_t | |
3695 | #ifdef CONFIG_E1000_NAPI | |
581d708e MC |
3696 | e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
3697 | struct e1000_rx_ring *rx_ring, | |
3698 | int *work_done, int work_to_do) | |
2d7edb92 | 3699 | #else |
581d708e MC |
3700 | e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
3701 | struct e1000_rx_ring *rx_ring) | |
2d7edb92 MC |
3702 | #endif |
3703 | { | |
86c3d59f | 3704 | union e1000_rx_desc_packet_split *rx_desc, *next_rxd; |
2d7edb92 MC |
3705 | struct net_device *netdev = adapter->netdev; |
3706 | struct pci_dev *pdev = adapter->pdev; | |
86c3d59f | 3707 | struct e1000_buffer *buffer_info, *next_buffer; |
2d7edb92 MC |
3708 | struct e1000_ps_page *ps_page; |
3709 | struct e1000_ps_page_dma *ps_page_dma; | |
86c3d59f | 3710 | struct sk_buff *skb, *next_skb; |
2d7edb92 MC |
3711 | unsigned int i, j; |
3712 | uint32_t length, staterr; | |
72d64a43 | 3713 | int cleaned_count = 0; |
2d7edb92 MC |
3714 | boolean_t cleaned = FALSE; |
3715 | ||
3716 | i = rx_ring->next_to_clean; | |
3717 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
683a38f3 | 3718 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
2d7edb92 | 3719 | |
96838a40 | 3720 | while (staterr & E1000_RXD_STAT_DD) { |
30320be8 | 3721 | buffer_info = &rx_ring->buffer_info[i]; |
2d7edb92 MC |
3722 | ps_page = &rx_ring->ps_page[i]; |
3723 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
3724 | #ifdef CONFIG_E1000_NAPI | |
96838a40 | 3725 | if (unlikely(*work_done >= work_to_do)) |
2d7edb92 MC |
3726 | break; |
3727 | (*work_done)++; | |
3728 | #endif | |
86c3d59f JB |
3729 | skb = buffer_info->skb; |
3730 | ||
30320be8 JK |
3731 | /* in the packet split case this is header only */ |
3732 | prefetch(skb->data - NET_IP_ALIGN); | |
3733 | ||
86c3d59f JB |
3734 | if (++i == rx_ring->count) i = 0; |
3735 | next_rxd = E1000_RX_DESC_PS(*rx_ring, i); | |
30320be8 JK |
3736 | prefetch(next_rxd); |
3737 | ||
86c3d59f JB |
3738 | next_buffer = &rx_ring->buffer_info[i]; |
3739 | next_skb = next_buffer->skb; | |
30320be8 | 3740 | prefetch(next_skb->data - NET_IP_ALIGN); |
86c3d59f | 3741 | |
2d7edb92 | 3742 | cleaned = TRUE; |
72d64a43 | 3743 | cleaned_count++; |
2d7edb92 MC |
3744 | pci_unmap_single(pdev, buffer_info->dma, |
3745 | buffer_info->length, | |
3746 | PCI_DMA_FROMDEVICE); | |
3747 | ||
96838a40 | 3748 | if (unlikely(!(staterr & E1000_RXD_STAT_EOP))) { |
2d7edb92 MC |
3749 | E1000_DBG("%s: Packet Split buffers didn't pick up" |
3750 | " the full packet\n", netdev->name); | |
3751 | dev_kfree_skb_irq(skb); | |
3752 | goto next_desc; | |
3753 | } | |
1da177e4 | 3754 | |
96838a40 | 3755 | if (unlikely(staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK)) { |
2d7edb92 MC |
3756 | dev_kfree_skb_irq(skb); |
3757 | goto next_desc; | |
3758 | } | |
3759 | ||
3760 | length = le16_to_cpu(rx_desc->wb.middle.length0); | |
3761 | ||
96838a40 | 3762 | if (unlikely(!length)) { |
2d7edb92 MC |
3763 | E1000_DBG("%s: Last part of the packet spanning" |
3764 | " multiple descriptors\n", netdev->name); | |
3765 | dev_kfree_skb_irq(skb); | |
3766 | goto next_desc; | |
3767 | } | |
3768 | ||
3769 | /* Good Receive */ | |
3770 | skb_put(skb, length); | |
3771 | ||
dc7c6add JK |
3772 | { |
3773 | /* this looks ugly, but it seems compiler issues make it | |
3774 | more efficient than reusing j */ | |
3775 | int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]); | |
3776 | ||
3777 | /* page alloc/put takes too long and effects small packet | |
3778 | * throughput, so unsplit small packets and save the alloc/put*/ | |
3779 | if (l1 && ((length + l1) < E1000_CB_LENGTH)) { | |
3780 | u8 *vaddr; | |
3781 | /* there is no documentation about how to call | |
3782 | * kmap_atomic, so we can't hold the mapping | |
3783 | * very long */ | |
3784 | pci_dma_sync_single_for_cpu(pdev, | |
3785 | ps_page_dma->ps_page_dma[0], | |
3786 | PAGE_SIZE, | |
3787 | PCI_DMA_FROMDEVICE); | |
3788 | vaddr = kmap_atomic(ps_page->ps_page[0], | |
3789 | KM_SKB_DATA_SOFTIRQ); | |
3790 | memcpy(skb->tail, vaddr, l1); | |
3791 | kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ); | |
3792 | pci_dma_sync_single_for_device(pdev, | |
3793 | ps_page_dma->ps_page_dma[0], | |
3794 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
3795 | skb_put(skb, l1); | |
3796 | length += l1; | |
3797 | goto copydone; | |
3798 | } /* if */ | |
3799 | } | |
3800 | ||
96838a40 | 3801 | for (j = 0; j < adapter->rx_ps_pages; j++) { |
30320be8 | 3802 | if (!(length= le16_to_cpu(rx_desc->wb.upper.length[j]))) |
2d7edb92 | 3803 | break; |
2d7edb92 MC |
3804 | pci_unmap_page(pdev, ps_page_dma->ps_page_dma[j], |
3805 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
3806 | ps_page_dma->ps_page_dma[j] = 0; | |
329bfd0b JK |
3807 | skb_fill_page_desc(skb, j, ps_page->ps_page[j], 0, |
3808 | length); | |
2d7edb92 | 3809 | ps_page->ps_page[j] = NULL; |
2d7edb92 MC |
3810 | skb->len += length; |
3811 | skb->data_len += length; | |
3812 | } | |
3813 | ||
dc7c6add | 3814 | copydone: |
2d7edb92 MC |
3815 | e1000_rx_checksum(adapter, staterr, |
3816 | rx_desc->wb.lower.hi_dword.csum_ip.csum, skb); | |
3817 | skb->protocol = eth_type_trans(skb, netdev); | |
3818 | ||
96838a40 | 3819 | if (likely(rx_desc->wb.upper.header_status & |
b92ff8ee | 3820 | E1000_RXDPS_HDRSTAT_HDRSP)) |
e4c811c9 | 3821 | adapter->rx_hdr_split++; |
2d7edb92 | 3822 | #ifdef CONFIG_E1000_NAPI |
96838a40 | 3823 | if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) { |
2d7edb92 | 3824 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
683a38f3 MC |
3825 | le16_to_cpu(rx_desc->wb.middle.vlan) & |
3826 | E1000_RXD_SPC_VLAN_MASK); | |
2d7edb92 MC |
3827 | } else { |
3828 | netif_receive_skb(skb); | |
3829 | } | |
3830 | #else /* CONFIG_E1000_NAPI */ | |
96838a40 | 3831 | if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) { |
2d7edb92 | 3832 | vlan_hwaccel_rx(skb, adapter->vlgrp, |
683a38f3 MC |
3833 | le16_to_cpu(rx_desc->wb.middle.vlan) & |
3834 | E1000_RXD_SPC_VLAN_MASK); | |
2d7edb92 MC |
3835 | } else { |
3836 | netif_rx(skb); | |
3837 | } | |
3838 | #endif /* CONFIG_E1000_NAPI */ | |
3839 | netdev->last_rx = jiffies; | |
3840 | ||
3841 | next_desc: | |
3842 | rx_desc->wb.middle.status_error &= ~0xFF; | |
3843 | buffer_info->skb = NULL; | |
2d7edb92 | 3844 | |
72d64a43 JK |
3845 | /* return some buffers to hardware, one at a time is too slow */ |
3846 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
3847 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
3848 | cleaned_count = 0; | |
3849 | } | |
3850 | ||
30320be8 | 3851 | /* use prefetched values */ |
86c3d59f JB |
3852 | rx_desc = next_rxd; |
3853 | buffer_info = next_buffer; | |
3854 | ||
683a38f3 | 3855 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
2d7edb92 MC |
3856 | } |
3857 | rx_ring->next_to_clean = i; | |
72d64a43 JK |
3858 | |
3859 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
3860 | if (cleaned_count) | |
3861 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
1da177e4 LT |
3862 | |
3863 | return cleaned; | |
3864 | } | |
3865 | ||
3866 | /** | |
2d7edb92 | 3867 | * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
1da177e4 LT |
3868 | * @adapter: address of board private structure |
3869 | **/ | |
3870 | ||
3871 | static void | |
581d708e | 3872 | e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
72d64a43 | 3873 | struct e1000_rx_ring *rx_ring, |
a292ca6e | 3874 | int cleaned_count) |
1da177e4 | 3875 | { |
1da177e4 LT |
3876 | struct net_device *netdev = adapter->netdev; |
3877 | struct pci_dev *pdev = adapter->pdev; | |
3878 | struct e1000_rx_desc *rx_desc; | |
3879 | struct e1000_buffer *buffer_info; | |
3880 | struct sk_buff *skb; | |
2648345f MC |
3881 | unsigned int i; |
3882 | unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN; | |
1da177e4 LT |
3883 | |
3884 | i = rx_ring->next_to_use; | |
3885 | buffer_info = &rx_ring->buffer_info[i]; | |
3886 | ||
a292ca6e JK |
3887 | while (cleaned_count--) { |
3888 | if (!(skb = buffer_info->skb)) | |
3889 | skb = dev_alloc_skb(bufsz); | |
3890 | else { | |
3891 | skb_trim(skb, 0); | |
3892 | goto map_skb; | |
3893 | } | |
3894 | ||
2648345f | 3895 | |
96838a40 | 3896 | if (unlikely(!skb)) { |
1da177e4 | 3897 | /* Better luck next round */ |
72d64a43 | 3898 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
3899 | break; |
3900 | } | |
3901 | ||
2648345f | 3902 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
3903 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
3904 | struct sk_buff *oldskb = skb; | |
2648345f MC |
3905 | DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes " |
3906 | "at %p\n", bufsz, skb->data); | |
3907 | /* Try again, without freeing the previous */ | |
1da177e4 | 3908 | skb = dev_alloc_skb(bufsz); |
2648345f | 3909 | /* Failed allocation, critical failure */ |
1da177e4 LT |
3910 | if (!skb) { |
3911 | dev_kfree_skb(oldskb); | |
3912 | break; | |
3913 | } | |
2648345f | 3914 | |
1da177e4 LT |
3915 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
3916 | /* give up */ | |
3917 | dev_kfree_skb(skb); | |
3918 | dev_kfree_skb(oldskb); | |
3919 | break; /* while !buffer_info->skb */ | |
3920 | } else { | |
2648345f | 3921 | /* Use new allocation */ |
1da177e4 LT |
3922 | dev_kfree_skb(oldskb); |
3923 | } | |
3924 | } | |
1da177e4 LT |
3925 | /* Make buffer alignment 2 beyond a 16 byte boundary |
3926 | * this will result in a 16 byte aligned IP header after | |
3927 | * the 14 byte MAC header is removed | |
3928 | */ | |
3929 | skb_reserve(skb, NET_IP_ALIGN); | |
3930 | ||
3931 | skb->dev = netdev; | |
3932 | ||
3933 | buffer_info->skb = skb; | |
3934 | buffer_info->length = adapter->rx_buffer_len; | |
a292ca6e | 3935 | map_skb: |
1da177e4 LT |
3936 | buffer_info->dma = pci_map_single(pdev, |
3937 | skb->data, | |
3938 | adapter->rx_buffer_len, | |
3939 | PCI_DMA_FROMDEVICE); | |
3940 | ||
2648345f MC |
3941 | /* Fix for errata 23, can't cross 64kB boundary */ |
3942 | if (!e1000_check_64k_bound(adapter, | |
3943 | (void *)(unsigned long)buffer_info->dma, | |
3944 | adapter->rx_buffer_len)) { | |
3945 | DPRINTK(RX_ERR, ERR, | |
3946 | "dma align check failed: %u bytes at %p\n", | |
3947 | adapter->rx_buffer_len, | |
3948 | (void *)(unsigned long)buffer_info->dma); | |
1da177e4 LT |
3949 | dev_kfree_skb(skb); |
3950 | buffer_info->skb = NULL; | |
3951 | ||
2648345f | 3952 | pci_unmap_single(pdev, buffer_info->dma, |
1da177e4 LT |
3953 | adapter->rx_buffer_len, |
3954 | PCI_DMA_FROMDEVICE); | |
3955 | ||
3956 | break; /* while !buffer_info->skb */ | |
3957 | } | |
1da177e4 LT |
3958 | rx_desc = E1000_RX_DESC(*rx_ring, i); |
3959 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
3960 | ||
96838a40 JB |
3961 | if (unlikely(++i == rx_ring->count)) |
3962 | i = 0; | |
1da177e4 LT |
3963 | buffer_info = &rx_ring->buffer_info[i]; |
3964 | } | |
3965 | ||
b92ff8ee JB |
3966 | if (likely(rx_ring->next_to_use != i)) { |
3967 | rx_ring->next_to_use = i; | |
3968 | if (unlikely(i-- == 0)) | |
3969 | i = (rx_ring->count - 1); | |
3970 | ||
3971 | /* Force memory writes to complete before letting h/w | |
3972 | * know there are new descriptors to fetch. (Only | |
3973 | * applicable for weak-ordered memory model archs, | |
3974 | * such as IA-64). */ | |
3975 | wmb(); | |
3976 | writel(i, adapter->hw.hw_addr + rx_ring->rdt); | |
3977 | } | |
1da177e4 LT |
3978 | } |
3979 | ||
2d7edb92 MC |
3980 | /** |
3981 | * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split | |
3982 | * @adapter: address of board private structure | |
3983 | **/ | |
3984 | ||
3985 | static void | |
581d708e | 3986 | e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, |
72d64a43 JK |
3987 | struct e1000_rx_ring *rx_ring, |
3988 | int cleaned_count) | |
2d7edb92 | 3989 | { |
2d7edb92 MC |
3990 | struct net_device *netdev = adapter->netdev; |
3991 | struct pci_dev *pdev = adapter->pdev; | |
3992 | union e1000_rx_desc_packet_split *rx_desc; | |
3993 | struct e1000_buffer *buffer_info; | |
3994 | struct e1000_ps_page *ps_page; | |
3995 | struct e1000_ps_page_dma *ps_page_dma; | |
3996 | struct sk_buff *skb; | |
3997 | unsigned int i, j; | |
3998 | ||
3999 | i = rx_ring->next_to_use; | |
4000 | buffer_info = &rx_ring->buffer_info[i]; | |
4001 | ps_page = &rx_ring->ps_page[i]; | |
4002 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
4003 | ||
72d64a43 | 4004 | while (cleaned_count--) { |
2d7edb92 MC |
4005 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
4006 | ||
96838a40 | 4007 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
e4c811c9 MC |
4008 | if (j < adapter->rx_ps_pages) { |
4009 | if (likely(!ps_page->ps_page[j])) { | |
4010 | ps_page->ps_page[j] = | |
4011 | alloc_page(GFP_ATOMIC); | |
b92ff8ee JB |
4012 | if (unlikely(!ps_page->ps_page[j])) { |
4013 | adapter->alloc_rx_buff_failed++; | |
e4c811c9 | 4014 | goto no_buffers; |
b92ff8ee | 4015 | } |
e4c811c9 MC |
4016 | ps_page_dma->ps_page_dma[j] = |
4017 | pci_map_page(pdev, | |
4018 | ps_page->ps_page[j], | |
4019 | 0, PAGE_SIZE, | |
4020 | PCI_DMA_FROMDEVICE); | |
4021 | } | |
4022 | /* Refresh the desc even if buffer_addrs didn't | |
96838a40 | 4023 | * change because each write-back erases |
e4c811c9 MC |
4024 | * this info. |
4025 | */ | |
4026 | rx_desc->read.buffer_addr[j+1] = | |
4027 | cpu_to_le64(ps_page_dma->ps_page_dma[j]); | |
4028 | } else | |
4029 | rx_desc->read.buffer_addr[j+1] = ~0; | |
2d7edb92 MC |
4030 | } |
4031 | ||
4032 | skb = dev_alloc_skb(adapter->rx_ps_bsize0 + NET_IP_ALIGN); | |
4033 | ||
b92ff8ee JB |
4034 | if (unlikely(!skb)) { |
4035 | adapter->alloc_rx_buff_failed++; | |
2d7edb92 | 4036 | break; |
b92ff8ee | 4037 | } |
2d7edb92 MC |
4038 | |
4039 | /* Make buffer alignment 2 beyond a 16 byte boundary | |
4040 | * this will result in a 16 byte aligned IP header after | |
4041 | * the 14 byte MAC header is removed | |
4042 | */ | |
4043 | skb_reserve(skb, NET_IP_ALIGN); | |
4044 | ||
4045 | skb->dev = netdev; | |
4046 | ||
4047 | buffer_info->skb = skb; | |
4048 | buffer_info->length = adapter->rx_ps_bsize0; | |
4049 | buffer_info->dma = pci_map_single(pdev, skb->data, | |
4050 | adapter->rx_ps_bsize0, | |
4051 | PCI_DMA_FROMDEVICE); | |
4052 | ||
4053 | rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); | |
4054 | ||
96838a40 | 4055 | if (unlikely(++i == rx_ring->count)) i = 0; |
2d7edb92 MC |
4056 | buffer_info = &rx_ring->buffer_info[i]; |
4057 | ps_page = &rx_ring->ps_page[i]; | |
4058 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
4059 | } | |
4060 | ||
4061 | no_buffers: | |
b92ff8ee JB |
4062 | if (likely(rx_ring->next_to_use != i)) { |
4063 | rx_ring->next_to_use = i; | |
4064 | if (unlikely(i-- == 0)) i = (rx_ring->count - 1); | |
4065 | ||
4066 | /* Force memory writes to complete before letting h/w | |
4067 | * know there are new descriptors to fetch. (Only | |
4068 | * applicable for weak-ordered memory model archs, | |
4069 | * such as IA-64). */ | |
4070 | wmb(); | |
4071 | /* Hardware increments by 16 bytes, but packet split | |
4072 | * descriptors are 32 bytes...so we increment tail | |
4073 | * twice as much. | |
4074 | */ | |
4075 | writel(i<<1, adapter->hw.hw_addr + rx_ring->rdt); | |
4076 | } | |
2d7edb92 MC |
4077 | } |
4078 | ||
1da177e4 LT |
4079 | /** |
4080 | * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. | |
4081 | * @adapter: | |
4082 | **/ | |
4083 | ||
4084 | static void | |
4085 | e1000_smartspeed(struct e1000_adapter *adapter) | |
4086 | { | |
4087 | uint16_t phy_status; | |
4088 | uint16_t phy_ctrl; | |
4089 | ||
96838a40 | 4090 | if ((adapter->hw.phy_type != e1000_phy_igp) || !adapter->hw.autoneg || |
1da177e4 LT |
4091 | !(adapter->hw.autoneg_advertised & ADVERTISE_1000_FULL)) |
4092 | return; | |
4093 | ||
96838a40 | 4094 | if (adapter->smartspeed == 0) { |
1da177e4 LT |
4095 | /* If Master/Slave config fault is asserted twice, |
4096 | * we assume back-to-back */ | |
4097 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); | |
96838a40 | 4098 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1da177e4 | 4099 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); |
96838a40 | 4100 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1da177e4 | 4101 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); |
96838a40 | 4102 | if (phy_ctrl & CR_1000T_MS_ENABLE) { |
1da177e4 LT |
4103 | phy_ctrl &= ~CR_1000T_MS_ENABLE; |
4104 | e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, | |
4105 | phy_ctrl); | |
4106 | adapter->smartspeed++; | |
96838a40 | 4107 | if (!e1000_phy_setup_autoneg(&adapter->hw) && |
1da177e4 LT |
4108 | !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, |
4109 | &phy_ctrl)) { | |
4110 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
4111 | MII_CR_RESTART_AUTO_NEG); | |
4112 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, | |
4113 | phy_ctrl); | |
4114 | } | |
4115 | } | |
4116 | return; | |
96838a40 | 4117 | } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { |
1da177e4 LT |
4118 | /* If still no link, perhaps using 2/3 pair cable */ |
4119 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); | |
4120 | phy_ctrl |= CR_1000T_MS_ENABLE; | |
4121 | e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_ctrl); | |
96838a40 | 4122 | if (!e1000_phy_setup_autoneg(&adapter->hw) && |
1da177e4 LT |
4123 | !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_ctrl)) { |
4124 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
4125 | MII_CR_RESTART_AUTO_NEG); | |
4126 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, phy_ctrl); | |
4127 | } | |
4128 | } | |
4129 | /* Restart process after E1000_SMARTSPEED_MAX iterations */ | |
96838a40 | 4130 | if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX) |
1da177e4 LT |
4131 | adapter->smartspeed = 0; |
4132 | } | |
4133 | ||
4134 | /** | |
4135 | * e1000_ioctl - | |
4136 | * @netdev: | |
4137 | * @ifreq: | |
4138 | * @cmd: | |
4139 | **/ | |
4140 | ||
4141 | static int | |
4142 | e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
4143 | { | |
4144 | switch (cmd) { | |
4145 | case SIOCGMIIPHY: | |
4146 | case SIOCGMIIREG: | |
4147 | case SIOCSMIIREG: | |
4148 | return e1000_mii_ioctl(netdev, ifr, cmd); | |
4149 | default: | |
4150 | return -EOPNOTSUPP; | |
4151 | } | |
4152 | } | |
4153 | ||
4154 | /** | |
4155 | * e1000_mii_ioctl - | |
4156 | * @netdev: | |
4157 | * @ifreq: | |
4158 | * @cmd: | |
4159 | **/ | |
4160 | ||
4161 | static int | |
4162 | e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
4163 | { | |
60490fe0 | 4164 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
4165 | struct mii_ioctl_data *data = if_mii(ifr); |
4166 | int retval; | |
4167 | uint16_t mii_reg; | |
4168 | uint16_t spddplx; | |
97876fc6 | 4169 | unsigned long flags; |
1da177e4 | 4170 | |
96838a40 | 4171 | if (adapter->hw.media_type != e1000_media_type_copper) |
1da177e4 LT |
4172 | return -EOPNOTSUPP; |
4173 | ||
4174 | switch (cmd) { | |
4175 | case SIOCGMIIPHY: | |
4176 | data->phy_id = adapter->hw.phy_addr; | |
4177 | break; | |
4178 | case SIOCGMIIREG: | |
96838a40 | 4179 | if (!capable(CAP_NET_ADMIN)) |
1da177e4 | 4180 | return -EPERM; |
97876fc6 | 4181 | spin_lock_irqsave(&adapter->stats_lock, flags); |
96838a40 | 4182 | if (e1000_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
97876fc6 MC |
4183 | &data->val_out)) { |
4184 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4185 | return -EIO; |
97876fc6 MC |
4186 | } |
4187 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 LT |
4188 | break; |
4189 | case SIOCSMIIREG: | |
96838a40 | 4190 | if (!capable(CAP_NET_ADMIN)) |
1da177e4 | 4191 | return -EPERM; |
96838a40 | 4192 | if (data->reg_num & ~(0x1F)) |
1da177e4 LT |
4193 | return -EFAULT; |
4194 | mii_reg = data->val_in; | |
97876fc6 | 4195 | spin_lock_irqsave(&adapter->stats_lock, flags); |
96838a40 | 4196 | if (e1000_write_phy_reg(&adapter->hw, data->reg_num, |
97876fc6 MC |
4197 | mii_reg)) { |
4198 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4199 | return -EIO; |
97876fc6 | 4200 | } |
96838a40 | 4201 | if (adapter->hw.phy_type == e1000_phy_m88) { |
1da177e4 LT |
4202 | switch (data->reg_num) { |
4203 | case PHY_CTRL: | |
96838a40 | 4204 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4205 | break; |
96838a40 | 4206 | if (mii_reg & MII_CR_AUTO_NEG_EN) { |
1da177e4 LT |
4207 | adapter->hw.autoneg = 1; |
4208 | adapter->hw.autoneg_advertised = 0x2F; | |
4209 | } else { | |
4210 | if (mii_reg & 0x40) | |
4211 | spddplx = SPEED_1000; | |
4212 | else if (mii_reg & 0x2000) | |
4213 | spddplx = SPEED_100; | |
4214 | else | |
4215 | spddplx = SPEED_10; | |
4216 | spddplx += (mii_reg & 0x100) | |
4217 | ? FULL_DUPLEX : | |
4218 | HALF_DUPLEX; | |
4219 | retval = e1000_set_spd_dplx(adapter, | |
4220 | spddplx); | |
96838a40 | 4221 | if (retval) { |
97876fc6 | 4222 | spin_unlock_irqrestore( |
96838a40 | 4223 | &adapter->stats_lock, |
97876fc6 | 4224 | flags); |
1da177e4 | 4225 | return retval; |
97876fc6 | 4226 | } |
1da177e4 | 4227 | } |
96838a40 | 4228 | if (netif_running(adapter->netdev)) { |
1da177e4 LT |
4229 | e1000_down(adapter); |
4230 | e1000_up(adapter); | |
4231 | } else | |
4232 | e1000_reset(adapter); | |
4233 | break; | |
4234 | case M88E1000_PHY_SPEC_CTRL: | |
4235 | case M88E1000_EXT_PHY_SPEC_CTRL: | |
96838a40 | 4236 | if (e1000_phy_reset(&adapter->hw)) { |
97876fc6 MC |
4237 | spin_unlock_irqrestore( |
4238 | &adapter->stats_lock, flags); | |
1da177e4 | 4239 | return -EIO; |
97876fc6 | 4240 | } |
1da177e4 LT |
4241 | break; |
4242 | } | |
4243 | } else { | |
4244 | switch (data->reg_num) { | |
4245 | case PHY_CTRL: | |
96838a40 | 4246 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4247 | break; |
96838a40 | 4248 | if (netif_running(adapter->netdev)) { |
1da177e4 LT |
4249 | e1000_down(adapter); |
4250 | e1000_up(adapter); | |
4251 | } else | |
4252 | e1000_reset(adapter); | |
4253 | break; | |
4254 | } | |
4255 | } | |
97876fc6 | 4256 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
1da177e4 LT |
4257 | break; |
4258 | default: | |
4259 | return -EOPNOTSUPP; | |
4260 | } | |
4261 | return E1000_SUCCESS; | |
4262 | } | |
4263 | ||
4264 | void | |
4265 | e1000_pci_set_mwi(struct e1000_hw *hw) | |
4266 | { | |
4267 | struct e1000_adapter *adapter = hw->back; | |
2648345f | 4268 | int ret_val = pci_set_mwi(adapter->pdev); |
1da177e4 | 4269 | |
96838a40 | 4270 | if (ret_val) |
2648345f | 4271 | DPRINTK(PROBE, ERR, "Error in setting MWI\n"); |
1da177e4 LT |
4272 | } |
4273 | ||
4274 | void | |
4275 | e1000_pci_clear_mwi(struct e1000_hw *hw) | |
4276 | { | |
4277 | struct e1000_adapter *adapter = hw->back; | |
4278 | ||
4279 | pci_clear_mwi(adapter->pdev); | |
4280 | } | |
4281 | ||
4282 | void | |
4283 | e1000_read_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) | |
4284 | { | |
4285 | struct e1000_adapter *adapter = hw->back; | |
4286 | ||
4287 | pci_read_config_word(adapter->pdev, reg, value); | |
4288 | } | |
4289 | ||
4290 | void | |
4291 | e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) | |
4292 | { | |
4293 | struct e1000_adapter *adapter = hw->back; | |
4294 | ||
4295 | pci_write_config_word(adapter->pdev, reg, *value); | |
4296 | } | |
4297 | ||
4298 | uint32_t | |
4299 | e1000_io_read(struct e1000_hw *hw, unsigned long port) | |
4300 | { | |
4301 | return inl(port); | |
4302 | } | |
4303 | ||
4304 | void | |
4305 | e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value) | |
4306 | { | |
4307 | outl(value, port); | |
4308 | } | |
4309 | ||
4310 | static void | |
4311 | e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) | |
4312 | { | |
60490fe0 | 4313 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
4314 | uint32_t ctrl, rctl; |
4315 | ||
4316 | e1000_irq_disable(adapter); | |
4317 | adapter->vlgrp = grp; | |
4318 | ||
96838a40 | 4319 | if (grp) { |
1da177e4 LT |
4320 | /* enable VLAN tag insert/strip */ |
4321 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
4322 | ctrl |= E1000_CTRL_VME; | |
4323 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
4324 | ||
4325 | /* enable VLAN receive filtering */ | |
4326 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
4327 | rctl |= E1000_RCTL_VFE; | |
4328 | rctl &= ~E1000_RCTL_CFIEN; | |
4329 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2d7edb92 | 4330 | e1000_update_mng_vlan(adapter); |
1da177e4 LT |
4331 | } else { |
4332 | /* disable VLAN tag insert/strip */ | |
4333 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
4334 | ctrl &= ~E1000_CTRL_VME; | |
4335 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
4336 | ||
4337 | /* disable VLAN filtering */ | |
4338 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
4339 | rctl &= ~E1000_RCTL_VFE; | |
4340 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
96838a40 | 4341 | if (adapter->mng_vlan_id != (uint16_t)E1000_MNG_VLAN_NONE) { |
2d7edb92 MC |
4342 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
4343 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
4344 | } | |
1da177e4 LT |
4345 | } |
4346 | ||
4347 | e1000_irq_enable(adapter); | |
4348 | } | |
4349 | ||
4350 | static void | |
4351 | e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid) | |
4352 | { | |
60490fe0 | 4353 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 4354 | uint32_t vfta, index; |
96838a40 JB |
4355 | |
4356 | if ((adapter->hw.mng_cookie.status & | |
4357 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && | |
4358 | (vid == adapter->mng_vlan_id)) | |
2d7edb92 | 4359 | return; |
1da177e4 LT |
4360 | /* add VID to filter table */ |
4361 | index = (vid >> 5) & 0x7F; | |
4362 | vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
4363 | vfta |= (1 << (vid & 0x1F)); | |
4364 | e1000_write_vfta(&adapter->hw, index, vfta); | |
4365 | } | |
4366 | ||
4367 | static void | |
4368 | e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid) | |
4369 | { | |
60490fe0 | 4370 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
4371 | uint32_t vfta, index; |
4372 | ||
4373 | e1000_irq_disable(adapter); | |
4374 | ||
96838a40 | 4375 | if (adapter->vlgrp) |
1da177e4 LT |
4376 | adapter->vlgrp->vlan_devices[vid] = NULL; |
4377 | ||
4378 | e1000_irq_enable(adapter); | |
4379 | ||
96838a40 JB |
4380 | if ((adapter->hw.mng_cookie.status & |
4381 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && | |
ff147013 JK |
4382 | (vid == adapter->mng_vlan_id)) { |
4383 | /* release control to f/w */ | |
4384 | e1000_release_hw_control(adapter); | |
2d7edb92 | 4385 | return; |
ff147013 JK |
4386 | } |
4387 | ||
1da177e4 LT |
4388 | /* remove VID from filter table */ |
4389 | index = (vid >> 5) & 0x7F; | |
4390 | vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
4391 | vfta &= ~(1 << (vid & 0x1F)); | |
4392 | e1000_write_vfta(&adapter->hw, index, vfta); | |
4393 | } | |
4394 | ||
4395 | static void | |
4396 | e1000_restore_vlan(struct e1000_adapter *adapter) | |
4397 | { | |
4398 | e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
4399 | ||
96838a40 | 4400 | if (adapter->vlgrp) { |
1da177e4 | 4401 | uint16_t vid; |
96838a40 JB |
4402 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { |
4403 | if (!adapter->vlgrp->vlan_devices[vid]) | |
1da177e4 LT |
4404 | continue; |
4405 | e1000_vlan_rx_add_vid(adapter->netdev, vid); | |
4406 | } | |
4407 | } | |
4408 | } | |
4409 | ||
4410 | int | |
4411 | e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx) | |
4412 | { | |
4413 | adapter->hw.autoneg = 0; | |
4414 | ||
6921368f | 4415 | /* Fiber NICs only allow 1000 gbps Full duplex */ |
96838a40 | 4416 | if ((adapter->hw.media_type == e1000_media_type_fiber) && |
6921368f MC |
4417 | spddplx != (SPEED_1000 + DUPLEX_FULL)) { |
4418 | DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); | |
4419 | return -EINVAL; | |
4420 | } | |
4421 | ||
96838a40 | 4422 | switch (spddplx) { |
1da177e4 LT |
4423 | case SPEED_10 + DUPLEX_HALF: |
4424 | adapter->hw.forced_speed_duplex = e1000_10_half; | |
4425 | break; | |
4426 | case SPEED_10 + DUPLEX_FULL: | |
4427 | adapter->hw.forced_speed_duplex = e1000_10_full; | |
4428 | break; | |
4429 | case SPEED_100 + DUPLEX_HALF: | |
4430 | adapter->hw.forced_speed_duplex = e1000_100_half; | |
4431 | break; | |
4432 | case SPEED_100 + DUPLEX_FULL: | |
4433 | adapter->hw.forced_speed_duplex = e1000_100_full; | |
4434 | break; | |
4435 | case SPEED_1000 + DUPLEX_FULL: | |
4436 | adapter->hw.autoneg = 1; | |
4437 | adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL; | |
4438 | break; | |
4439 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ | |
4440 | default: | |
2648345f | 4441 | DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); |
1da177e4 LT |
4442 | return -EINVAL; |
4443 | } | |
4444 | return 0; | |
4445 | } | |
4446 | ||
b6a1d5f8 | 4447 | #ifdef CONFIG_PM |
2f82665f JB |
4448 | /* these functions save and restore 16 or 64 dwords (64-256 bytes) of config |
4449 | * space versus the 64 bytes that pci_[save|restore]_state handle | |
4450 | */ | |
4451 | #define PCIE_CONFIG_SPACE_LEN 256 | |
4452 | #define PCI_CONFIG_SPACE_LEN 64 | |
4453 | static int | |
4454 | e1000_pci_save_state(struct e1000_adapter *adapter) | |
4455 | { | |
4456 | struct pci_dev *dev = adapter->pdev; | |
4457 | int size; | |
4458 | int i; | |
4459 | if (adapter->hw.mac_type >= e1000_82571) | |
4460 | size = PCIE_CONFIG_SPACE_LEN; | |
4461 | else | |
4462 | size = PCI_CONFIG_SPACE_LEN; | |
4463 | ||
4464 | WARN_ON(adapter->config_space != NULL); | |
4465 | ||
4466 | adapter->config_space = kmalloc(size, GFP_KERNEL); | |
4467 | if (!adapter->config_space) { | |
4468 | DPRINTK(PROBE, ERR, "unable to allocate %d bytes\n", size); | |
4469 | return -ENOMEM; | |
4470 | } | |
4471 | for (i = 0; i < (size / 4); i++) | |
4472 | pci_read_config_dword(dev, i * 4, &adapter->config_space[i]); | |
4473 | return 0; | |
4474 | } | |
4475 | ||
4476 | static void | |
4477 | e1000_pci_restore_state(struct e1000_adapter *adapter) | |
4478 | { | |
4479 | struct pci_dev *dev = adapter->pdev; | |
4480 | int size; | |
4481 | int i; | |
4482 | if (adapter->config_space == NULL) | |
4483 | return; | |
4484 | if (adapter->hw.mac_type >= e1000_82571) | |
4485 | size = PCIE_CONFIG_SPACE_LEN; | |
4486 | else | |
4487 | size = PCI_CONFIG_SPACE_LEN; | |
4488 | for (i = 0; i < (size / 4); i++) | |
4489 | pci_write_config_dword(dev, i * 4, adapter->config_space[i]); | |
4490 | kfree(adapter->config_space); | |
4491 | adapter->config_space = NULL; | |
4492 | return; | |
4493 | } | |
4494 | #endif /* CONFIG_PM */ | |
4495 | ||
1da177e4 | 4496 | static int |
829ca9a3 | 4497 | e1000_suspend(struct pci_dev *pdev, pm_message_t state) |
1da177e4 LT |
4498 | { |
4499 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 4500 | struct e1000_adapter *adapter = netdev_priv(netdev); |
b55ccb35 | 4501 | uint32_t ctrl, ctrl_ext, rctl, manc, status; |
1da177e4 | 4502 | uint32_t wufc = adapter->wol; |
240b1710 | 4503 | int retval = 0; |
1da177e4 LT |
4504 | |
4505 | netif_device_detach(netdev); | |
4506 | ||
96838a40 | 4507 | if (netif_running(netdev)) |
1da177e4 LT |
4508 | e1000_down(adapter); |
4509 | ||
2f82665f JB |
4510 | #ifdef CONFIG_PM |
4511 | /* implement our own version of pci_save_state(pdev) because pci | |
4512 | * express adapters have larger 256 byte config spaces */ | |
4513 | retval = e1000_pci_save_state(adapter); | |
4514 | if (retval) | |
4515 | return retval; | |
4516 | #endif | |
4517 | ||
1da177e4 | 4518 | status = E1000_READ_REG(&adapter->hw, STATUS); |
96838a40 | 4519 | if (status & E1000_STATUS_LU) |
1da177e4 LT |
4520 | wufc &= ~E1000_WUFC_LNKC; |
4521 | ||
96838a40 | 4522 | if (wufc) { |
1da177e4 LT |
4523 | e1000_setup_rctl(adapter); |
4524 | e1000_set_multi(netdev); | |
4525 | ||
4526 | /* turn on all-multi mode if wake on multicast is enabled */ | |
96838a40 | 4527 | if (adapter->wol & E1000_WUFC_MC) { |
1da177e4 LT |
4528 | rctl = E1000_READ_REG(&adapter->hw, RCTL); |
4529 | rctl |= E1000_RCTL_MPE; | |
4530 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
4531 | } | |
4532 | ||
96838a40 | 4533 | if (adapter->hw.mac_type >= e1000_82540) { |
1da177e4 LT |
4534 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); |
4535 | /* advertise wake from D3Cold */ | |
4536 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
4537 | /* phy power management enable */ | |
4538 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
4539 | ctrl |= E1000_CTRL_ADVD3WUC | | |
4540 | E1000_CTRL_EN_PHY_PWR_MGMT; | |
4541 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
4542 | } | |
4543 | ||
96838a40 | 4544 | if (adapter->hw.media_type == e1000_media_type_fiber || |
1da177e4 LT |
4545 | adapter->hw.media_type == e1000_media_type_internal_serdes) { |
4546 | /* keep the laser running in D3 */ | |
4547 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); | |
4548 | ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; | |
4549 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, ctrl_ext); | |
4550 | } | |
4551 | ||
2d7edb92 MC |
4552 | /* Allow time for pending master requests to run */ |
4553 | e1000_disable_pciex_master(&adapter->hw); | |
4554 | ||
1da177e4 LT |
4555 | E1000_WRITE_REG(&adapter->hw, WUC, E1000_WUC_PME_EN); |
4556 | E1000_WRITE_REG(&adapter->hw, WUFC, wufc); | |
240b1710 JK |
4557 | retval = pci_enable_wake(pdev, PCI_D3hot, 1); |
4558 | if (retval) | |
4559 | DPRINTK(PROBE, ERR, "Error enabling D3 wake\n"); | |
4560 | retval = pci_enable_wake(pdev, PCI_D3cold, 1); | |
4561 | if (retval) | |
4562 | DPRINTK(PROBE, ERR, "Error enabling D3 cold wake\n"); | |
1da177e4 LT |
4563 | } else { |
4564 | E1000_WRITE_REG(&adapter->hw, WUC, 0); | |
4565 | E1000_WRITE_REG(&adapter->hw, WUFC, 0); | |
240b1710 JK |
4566 | retval = pci_enable_wake(pdev, PCI_D3hot, 0); |
4567 | if (retval) | |
4568 | DPRINTK(PROBE, ERR, "Error enabling D3 wake\n"); | |
4569 | retval = pci_enable_wake(pdev, PCI_D3cold, 0); /* 4 == D3 cold */ | |
4570 | if (retval) | |
4571 | DPRINTK(PROBE, ERR, "Error enabling D3 cold wake\n"); | |
1da177e4 LT |
4572 | } |
4573 | ||
96838a40 | 4574 | if (adapter->hw.mac_type >= e1000_82540 && |
1da177e4 LT |
4575 | adapter->hw.media_type == e1000_media_type_copper) { |
4576 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
96838a40 | 4577 | if (manc & E1000_MANC_SMBUS_EN) { |
1da177e4 LT |
4578 | manc |= E1000_MANC_ARP_EN; |
4579 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
240b1710 JK |
4580 | retval = pci_enable_wake(pdev, PCI_D3hot, 1); |
4581 | if (retval) | |
4582 | DPRINTK(PROBE, ERR, "Error enabling D3 wake\n"); | |
4583 | retval = pci_enable_wake(pdev, PCI_D3cold, 1); | |
4584 | if (retval) | |
4585 | DPRINTK(PROBE, ERR, "Error enabling D3 cold wake\n"); | |
1da177e4 LT |
4586 | } |
4587 | } | |
4588 | ||
b55ccb35 JK |
4589 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
4590 | * would have already happened in close and is redundant. */ | |
4591 | e1000_release_hw_control(adapter); | |
2d7edb92 | 4592 | |
1da177e4 | 4593 | pci_disable_device(pdev); |
240b1710 JK |
4594 | |
4595 | retval = pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
4596 | if (retval) | |
4597 | DPRINTK(PROBE, ERR, "Error in setting power state\n"); | |
1da177e4 LT |
4598 | |
4599 | return 0; | |
4600 | } | |
4601 | ||
2f82665f | 4602 | #ifdef CONFIG_PM |
1da177e4 LT |
4603 | static int |
4604 | e1000_resume(struct pci_dev *pdev) | |
4605 | { | |
4606 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 4607 | struct e1000_adapter *adapter = netdev_priv(netdev); |
240b1710 | 4608 | int retval; |
b55ccb35 | 4609 | uint32_t manc, ret_val; |
1da177e4 | 4610 | |
240b1710 JK |
4611 | retval = pci_set_power_state(pdev, PCI_D0); |
4612 | if (retval) | |
4613 | DPRINTK(PROBE, ERR, "Error in setting power state\n"); | |
2f82665f | 4614 | e1000_pci_restore_state(adapter); |
2b02893e | 4615 | ret_val = pci_enable_device(pdev); |
a4cb847d | 4616 | pci_set_master(pdev); |
1da177e4 | 4617 | |
240b1710 JK |
4618 | retval = pci_enable_wake(pdev, PCI_D3hot, 0); |
4619 | if (retval) | |
4620 | DPRINTK(PROBE, ERR, "Error enabling D3 wake\n"); | |
4621 | retval = pci_enable_wake(pdev, PCI_D3cold, 0); | |
4622 | if (retval) | |
4623 | DPRINTK(PROBE, ERR, "Error enabling D3 cold wake\n"); | |
1da177e4 LT |
4624 | |
4625 | e1000_reset(adapter); | |
4626 | E1000_WRITE_REG(&adapter->hw, WUS, ~0); | |
4627 | ||
96838a40 | 4628 | if (netif_running(netdev)) |
1da177e4 LT |
4629 | e1000_up(adapter); |
4630 | ||
4631 | netif_device_attach(netdev); | |
4632 | ||
96838a40 | 4633 | if (adapter->hw.mac_type >= e1000_82540 && |
1da177e4 LT |
4634 | adapter->hw.media_type == e1000_media_type_copper) { |
4635 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
4636 | manc &= ~(E1000_MANC_ARP_EN); | |
4637 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
4638 | } | |
4639 | ||
b55ccb35 JK |
4640 | /* If the controller is 82573 and f/w is AMT, do not set |
4641 | * DRV_LOAD until the interface is up. For all other cases, | |
4642 | * let the f/w know that the h/w is now under the control | |
4643 | * of the driver. */ | |
4644 | if (adapter->hw.mac_type != e1000_82573 || | |
4645 | !e1000_check_mng_mode(&adapter->hw)) | |
4646 | e1000_get_hw_control(adapter); | |
2d7edb92 | 4647 | |
1da177e4 LT |
4648 | return 0; |
4649 | } | |
4650 | #endif | |
1da177e4 LT |
4651 | #ifdef CONFIG_NET_POLL_CONTROLLER |
4652 | /* | |
4653 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
4654 | * without having to re-enable interrupts. It's not called while | |
4655 | * the interrupt routine is executing. | |
4656 | */ | |
4657 | static void | |
2648345f | 4658 | e1000_netpoll(struct net_device *netdev) |
1da177e4 | 4659 | { |
60490fe0 | 4660 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
4661 | disable_irq(adapter->pdev->irq); |
4662 | e1000_intr(adapter->pdev->irq, netdev, NULL); | |
c4cfe567 | 4663 | e1000_clean_tx_irq(adapter, adapter->tx_ring); |
e8da8be1 JK |
4664 | #ifndef CONFIG_E1000_NAPI |
4665 | adapter->clean_rx(adapter, adapter->rx_ring); | |
4666 | #endif | |
1da177e4 LT |
4667 | enable_irq(adapter->pdev->irq); |
4668 | } | |
4669 | #endif | |
4670 | ||
4671 | /* e1000_main.c */ |