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1da177e4 LT |
1 | /******************************************************************************* |
2 | ||
3 | ||
2648345f | 4 | Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved. |
1da177e4 LT |
5 | |
6 | This program is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU General Public License as published by the Free | |
8 | Software Foundation; either version 2 of the License, or (at your option) | |
9 | any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, but WITHOUT | |
12 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
14 | more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License along with | |
17 | this program; if not, write to the Free Software Foundation, Inc., 59 | |
18 | Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
19 | ||
20 | The full GNU General Public License is included in this distribution in the | |
21 | file called LICENSE. | |
22 | ||
23 | Contact Information: | |
24 | Linux NICS <linux.nics@intel.com> | |
25 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
26 | ||
27 | *******************************************************************************/ | |
28 | ||
29 | #include "e1000.h" | |
30 | ||
31 | /* Change Log | |
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 | |
a1415ee6 | 106 | #define DRV_VERSION "6.3.9-k4"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), | |
b7ee49db | 160 | INTEL_E1000_ETHERNET_DEVICE(0x1099), |
07b8fede | 161 | INTEL_E1000_ETHERNET_DEVICE(0x109A), |
b7ee49db | 162 | INTEL_E1000_ETHERNET_DEVICE(0x10B5), |
1da177e4 LT |
163 | /* required last entry */ |
164 | {0,} | |
165 | }; | |
166 | ||
167 | MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); | |
168 | ||
169 | int e1000_up(struct e1000_adapter *adapter); | |
170 | void e1000_down(struct e1000_adapter *adapter); | |
171 | void e1000_reset(struct e1000_adapter *adapter); | |
172 | int e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx); | |
581d708e MC |
173 | int e1000_setup_all_tx_resources(struct e1000_adapter *adapter); |
174 | int e1000_setup_all_rx_resources(struct e1000_adapter *adapter); | |
175 | void e1000_free_all_tx_resources(struct e1000_adapter *adapter); | |
176 | void e1000_free_all_rx_resources(struct e1000_adapter *adapter); | |
3ad2cc67 AB |
177 | static int e1000_setup_tx_resources(struct e1000_adapter *adapter, |
178 | struct e1000_tx_ring *txdr); | |
179 | static int e1000_setup_rx_resources(struct e1000_adapter *adapter, | |
180 | struct e1000_rx_ring *rxdr); | |
181 | static void e1000_free_tx_resources(struct e1000_adapter *adapter, | |
182 | struct e1000_tx_ring *tx_ring); | |
183 | static void e1000_free_rx_resources(struct e1000_adapter *adapter, | |
184 | struct e1000_rx_ring *rx_ring); | |
1da177e4 LT |
185 | void e1000_update_stats(struct e1000_adapter *adapter); |
186 | ||
187 | /* Local Function Prototypes */ | |
188 | ||
189 | static int e1000_init_module(void); | |
190 | static void e1000_exit_module(void); | |
191 | static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent); | |
192 | static void __devexit e1000_remove(struct pci_dev *pdev); | |
581d708e MC |
193 | static int e1000_alloc_queues(struct e1000_adapter *adapter); |
194 | #ifdef CONFIG_E1000_MQ | |
195 | static void e1000_setup_queue_mapping(struct e1000_adapter *adapter); | |
196 | #endif | |
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); | |
248 | static void e1000_tx_timeout_task(struct net_device *dev); | |
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 MC |
268 | #ifdef CONFIG_E1000_MQ |
269 | /* for multiple Rx queues */ | |
270 | void e1000_rx_schedule(void *data); | |
271 | #endif | |
272 | ||
1da177e4 LT |
273 | /* Exported from other modules */ |
274 | ||
275 | extern void e1000_check_options(struct e1000_adapter *adapter); | |
276 | ||
277 | static struct pci_driver e1000_driver = { | |
278 | .name = e1000_driver_name, | |
279 | .id_table = e1000_pci_tbl, | |
280 | .probe = e1000_probe, | |
281 | .remove = __devexit_p(e1000_remove), | |
282 | /* Power Managment Hooks */ | |
283 | #ifdef CONFIG_PM | |
284 | .suspend = e1000_suspend, | |
285 | .resume = e1000_resume | |
286 | #endif | |
287 | }; | |
288 | ||
289 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
290 | MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); | |
291 | MODULE_LICENSE("GPL"); | |
292 | MODULE_VERSION(DRV_VERSION); | |
293 | ||
294 | static int debug = NETIF_MSG_DRV | NETIF_MSG_PROBE; | |
295 | module_param(debug, int, 0); | |
296 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
297 | ||
298 | /** | |
299 | * e1000_init_module - Driver Registration Routine | |
300 | * | |
301 | * e1000_init_module is the first routine called when the driver is | |
302 | * loaded. All it does is register with the PCI subsystem. | |
303 | **/ | |
304 | ||
305 | static int __init | |
306 | e1000_init_module(void) | |
307 | { | |
308 | int ret; | |
309 | printk(KERN_INFO "%s - version %s\n", | |
310 | e1000_driver_string, e1000_driver_version); | |
311 | ||
312 | printk(KERN_INFO "%s\n", e1000_copyright); | |
313 | ||
314 | ret = pci_module_init(&e1000_driver); | |
8b378def | 315 | |
1da177e4 LT |
316 | return ret; |
317 | } | |
318 | ||
319 | module_init(e1000_init_module); | |
320 | ||
321 | /** | |
322 | * e1000_exit_module - Driver Exit Cleanup Routine | |
323 | * | |
324 | * e1000_exit_module is called just before the driver is removed | |
325 | * from memory. | |
326 | **/ | |
327 | ||
328 | static void __exit | |
329 | e1000_exit_module(void) | |
330 | { | |
1da177e4 LT |
331 | pci_unregister_driver(&e1000_driver); |
332 | } | |
333 | ||
334 | module_exit(e1000_exit_module); | |
335 | ||
336 | /** | |
337 | * e1000_irq_disable - Mask off interrupt generation on the NIC | |
338 | * @adapter: board private structure | |
339 | **/ | |
340 | ||
341 | static inline void | |
342 | e1000_irq_disable(struct e1000_adapter *adapter) | |
343 | { | |
344 | atomic_inc(&adapter->irq_sem); | |
345 | E1000_WRITE_REG(&adapter->hw, IMC, ~0); | |
346 | E1000_WRITE_FLUSH(&adapter->hw); | |
347 | synchronize_irq(adapter->pdev->irq); | |
348 | } | |
349 | ||
350 | /** | |
351 | * e1000_irq_enable - Enable default interrupt generation settings | |
352 | * @adapter: board private structure | |
353 | **/ | |
354 | ||
355 | static inline void | |
356 | e1000_irq_enable(struct e1000_adapter *adapter) | |
357 | { | |
96838a40 | 358 | if (likely(atomic_dec_and_test(&adapter->irq_sem))) { |
1da177e4 LT |
359 | E1000_WRITE_REG(&adapter->hw, IMS, IMS_ENABLE_MASK); |
360 | E1000_WRITE_FLUSH(&adapter->hw); | |
361 | } | |
362 | } | |
3ad2cc67 AB |
363 | |
364 | static void | |
2d7edb92 MC |
365 | e1000_update_mng_vlan(struct e1000_adapter *adapter) |
366 | { | |
367 | struct net_device *netdev = adapter->netdev; | |
368 | uint16_t vid = adapter->hw.mng_cookie.vlan_id; | |
369 | uint16_t old_vid = adapter->mng_vlan_id; | |
96838a40 JB |
370 | if (adapter->vlgrp) { |
371 | if (!adapter->vlgrp->vlan_devices[vid]) { | |
372 | if (adapter->hw.mng_cookie.status & | |
2d7edb92 MC |
373 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) { |
374 | e1000_vlan_rx_add_vid(netdev, vid); | |
375 | adapter->mng_vlan_id = vid; | |
376 | } else | |
377 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
96838a40 JB |
378 | |
379 | if ((old_vid != (uint16_t)E1000_MNG_VLAN_NONE) && | |
380 | (vid != old_vid) && | |
2d7edb92 MC |
381 | !adapter->vlgrp->vlan_devices[old_vid]) |
382 | e1000_vlan_rx_kill_vid(netdev, old_vid); | |
383 | } | |
384 | } | |
385 | } | |
b55ccb35 JK |
386 | |
387 | /** | |
388 | * e1000_release_hw_control - release control of the h/w to f/w | |
389 | * @adapter: address of board private structure | |
390 | * | |
391 | * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit. | |
392 | * For ASF and Pass Through versions of f/w this means that the | |
393 | * driver is no longer loaded. For AMT version (only with 82573) i | |
394 | * of the f/w this means that the netowrk i/f is closed. | |
395 | * | |
396 | **/ | |
397 | ||
398 | static inline void | |
399 | e1000_release_hw_control(struct e1000_adapter *adapter) | |
400 | { | |
401 | uint32_t ctrl_ext; | |
402 | uint32_t swsm; | |
403 | ||
404 | /* Let firmware taken over control of h/w */ | |
405 | switch (adapter->hw.mac_type) { | |
406 | case e1000_82571: | |
407 | case e1000_82572: | |
408 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); | |
409 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, | |
410 | ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); | |
411 | break; | |
412 | case e1000_82573: | |
413 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
414 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
415 | swsm & ~E1000_SWSM_DRV_LOAD); | |
416 | default: | |
417 | break; | |
418 | } | |
419 | } | |
420 | ||
421 | /** | |
422 | * e1000_get_hw_control - get control of the h/w from f/w | |
423 | * @adapter: address of board private structure | |
424 | * | |
425 | * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit. | |
426 | * For ASF and Pass Through versions of f/w this means that | |
427 | * the driver is loaded. For AMT version (only with 82573) | |
428 | * of the f/w this means that the netowrk i/f is open. | |
429 | * | |
430 | **/ | |
431 | ||
432 | static inline void | |
433 | e1000_get_hw_control(struct e1000_adapter *adapter) | |
434 | { | |
435 | uint32_t ctrl_ext; | |
436 | uint32_t swsm; | |
437 | /* Let firmware know the driver has taken over */ | |
438 | switch (adapter->hw.mac_type) { | |
439 | case e1000_82571: | |
440 | case e1000_82572: | |
441 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); | |
442 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, | |
443 | ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); | |
444 | break; | |
445 | case e1000_82573: | |
446 | swsm = E1000_READ_REG(&adapter->hw, SWSM); | |
447 | E1000_WRITE_REG(&adapter->hw, SWSM, | |
448 | swsm | E1000_SWSM_DRV_LOAD); | |
449 | break; | |
450 | default: | |
451 | break; | |
452 | } | |
453 | } | |
454 | ||
1da177e4 LT |
455 | int |
456 | e1000_up(struct e1000_adapter *adapter) | |
457 | { | |
458 | struct net_device *netdev = adapter->netdev; | |
581d708e | 459 | int i, err; |
1da177e4 LT |
460 | |
461 | /* hardware has been reset, we need to reload some things */ | |
462 | ||
463 | /* Reset the PHY if it was previously powered down */ | |
96838a40 | 464 | if (adapter->hw.media_type == e1000_media_type_copper) { |
1da177e4 LT |
465 | uint16_t mii_reg; |
466 | e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); | |
96838a40 | 467 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 LT |
468 | e1000_phy_reset(&adapter->hw); |
469 | } | |
470 | ||
471 | e1000_set_multi(netdev); | |
472 | ||
473 | e1000_restore_vlan(adapter); | |
474 | ||
475 | e1000_configure_tx(adapter); | |
476 | e1000_setup_rctl(adapter); | |
477 | e1000_configure_rx(adapter); | |
72d64a43 JK |
478 | /* call E1000_DESC_UNUSED which always leaves |
479 | * at least 1 descriptor unused to make sure | |
480 | * next_to_use != next_to_clean */ | |
f56799ea | 481 | for (i = 0; i < adapter->num_rx_queues; i++) { |
72d64a43 | 482 | struct e1000_rx_ring *ring = &adapter->rx_ring[i]; |
a292ca6e JK |
483 | adapter->alloc_rx_buf(adapter, ring, |
484 | E1000_DESC_UNUSED(ring)); | |
f56799ea | 485 | } |
1da177e4 | 486 | |
fa4f7ef3 | 487 | #ifdef CONFIG_PCI_MSI |
96838a40 | 488 | if (adapter->hw.mac_type > e1000_82547_rev_2) { |
fa4f7ef3 | 489 | adapter->have_msi = TRUE; |
96838a40 | 490 | if ((err = pci_enable_msi(adapter->pdev))) { |
fa4f7ef3 MC |
491 | DPRINTK(PROBE, ERR, |
492 | "Unable to allocate MSI interrupt Error: %d\n", err); | |
493 | adapter->have_msi = FALSE; | |
494 | } | |
495 | } | |
496 | #endif | |
96838a40 | 497 | if ((err = request_irq(adapter->pdev->irq, &e1000_intr, |
1da177e4 | 498 | SA_SHIRQ | SA_SAMPLE_RANDOM, |
2648345f MC |
499 | netdev->name, netdev))) { |
500 | DPRINTK(PROBE, ERR, | |
501 | "Unable to allocate interrupt Error: %d\n", err); | |
1da177e4 | 502 | return err; |
2648345f | 503 | } |
1da177e4 | 504 | |
7bfa4816 JK |
505 | #ifdef CONFIG_E1000_MQ |
506 | e1000_setup_queue_mapping(adapter); | |
507 | #endif | |
508 | ||
509 | adapter->tx_queue_len = netdev->tx_queue_len; | |
510 | ||
1da177e4 | 511 | mod_timer(&adapter->watchdog_timer, jiffies); |
1da177e4 LT |
512 | |
513 | #ifdef CONFIG_E1000_NAPI | |
514 | netif_poll_enable(netdev); | |
515 | #endif | |
5de55624 MC |
516 | e1000_irq_enable(adapter); |
517 | ||
1da177e4 LT |
518 | return 0; |
519 | } | |
520 | ||
521 | void | |
522 | e1000_down(struct e1000_adapter *adapter) | |
523 | { | |
524 | struct net_device *netdev = adapter->netdev; | |
57128197 JK |
525 | boolean_t mng_mode_enabled = (adapter->hw.mac_type >= e1000_82571) && |
526 | e1000_check_mng_mode(&adapter->hw); | |
1da177e4 LT |
527 | |
528 | e1000_irq_disable(adapter); | |
24025e4e MC |
529 | #ifdef CONFIG_E1000_MQ |
530 | while (atomic_read(&adapter->rx_sched_call_data.count) != 0); | |
531 | #endif | |
1da177e4 | 532 | free_irq(adapter->pdev->irq, netdev); |
fa4f7ef3 | 533 | #ifdef CONFIG_PCI_MSI |
96838a40 | 534 | if (adapter->hw.mac_type > e1000_82547_rev_2 && |
fa4f7ef3 MC |
535 | adapter->have_msi == TRUE) |
536 | pci_disable_msi(adapter->pdev); | |
537 | #endif | |
1da177e4 LT |
538 | del_timer_sync(&adapter->tx_fifo_stall_timer); |
539 | del_timer_sync(&adapter->watchdog_timer); | |
540 | del_timer_sync(&adapter->phy_info_timer); | |
541 | ||
542 | #ifdef CONFIG_E1000_NAPI | |
543 | netif_poll_disable(netdev); | |
544 | #endif | |
7bfa4816 | 545 | netdev->tx_queue_len = adapter->tx_queue_len; |
1da177e4 LT |
546 | adapter->link_speed = 0; |
547 | adapter->link_duplex = 0; | |
548 | netif_carrier_off(netdev); | |
549 | netif_stop_queue(netdev); | |
550 | ||
551 | e1000_reset(adapter); | |
581d708e MC |
552 | e1000_clean_all_tx_rings(adapter); |
553 | e1000_clean_all_rx_rings(adapter); | |
1da177e4 | 554 | |
57128197 JK |
555 | /* Power down the PHY so no link is implied when interface is down * |
556 | * The PHY cannot be powered down if any of the following is TRUE * | |
557 | * (a) WoL is enabled | |
558 | * (b) AMT is active | |
559 | * (c) SoL/IDER session is active */ | |
560 | if (!adapter->wol && adapter->hw.mac_type >= e1000_82540 && | |
2d7edb92 | 561 | adapter->hw.media_type == e1000_media_type_copper && |
57128197 JK |
562 | !(E1000_READ_REG(&adapter->hw, MANC) & E1000_MANC_SMBUS_EN) && |
563 | !mng_mode_enabled && | |
564 | !e1000_check_phy_reset_block(&adapter->hw)) { | |
1da177e4 LT |
565 | uint16_t mii_reg; |
566 | e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &mii_reg); | |
567 | mii_reg |= MII_CR_POWER_DOWN; | |
568 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, mii_reg); | |
4e48a2b9 | 569 | mdelay(1); |
1da177e4 LT |
570 | } |
571 | } | |
572 | ||
573 | void | |
574 | e1000_reset(struct e1000_adapter *adapter) | |
575 | { | |
2d7edb92 | 576 | uint32_t pba, manc; |
1125ecbc | 577 | uint16_t fc_high_water_mark = E1000_FC_HIGH_DIFF; |
1da177e4 LT |
578 | |
579 | /* Repartition Pba for greater than 9k mtu | |
580 | * To take effect CTRL.RST is required. | |
581 | */ | |
582 | ||
2d7edb92 MC |
583 | switch (adapter->hw.mac_type) { |
584 | case e1000_82547: | |
0e6ef3e0 | 585 | case e1000_82547_rev_2: |
2d7edb92 MC |
586 | pba = E1000_PBA_30K; |
587 | break; | |
868d5309 MC |
588 | case e1000_82571: |
589 | case e1000_82572: | |
590 | pba = E1000_PBA_38K; | |
591 | break; | |
2d7edb92 MC |
592 | case e1000_82573: |
593 | pba = E1000_PBA_12K; | |
594 | break; | |
595 | default: | |
596 | pba = E1000_PBA_48K; | |
597 | break; | |
598 | } | |
599 | ||
96838a40 | 600 | if ((adapter->hw.mac_type != e1000_82573) && |
f11b7f85 | 601 | (adapter->netdev->mtu > E1000_RXBUFFER_8192)) |
1125ecbc | 602 | pba -= 8; /* allocate more FIFO for Tx */ |
2d7edb92 MC |
603 | |
604 | ||
96838a40 | 605 | if (adapter->hw.mac_type == e1000_82547) { |
1da177e4 LT |
606 | adapter->tx_fifo_head = 0; |
607 | adapter->tx_head_addr = pba << E1000_TX_HEAD_ADDR_SHIFT; | |
608 | adapter->tx_fifo_size = | |
609 | (E1000_PBA_40K - pba) << E1000_PBA_BYTES_SHIFT; | |
610 | atomic_set(&adapter->tx_fifo_stall, 0); | |
611 | } | |
2d7edb92 | 612 | |
1da177e4 LT |
613 | E1000_WRITE_REG(&adapter->hw, PBA, pba); |
614 | ||
615 | /* flow control settings */ | |
f11b7f85 JK |
616 | /* Set the FC high water mark to 90% of the FIFO size. |
617 | * Required to clear last 3 LSB */ | |
618 | fc_high_water_mark = ((pba * 9216)/10) & 0xFFF8; | |
619 | ||
620 | adapter->hw.fc_high_water = fc_high_water_mark; | |
621 | adapter->hw.fc_low_water = fc_high_water_mark - 8; | |
1da177e4 LT |
622 | adapter->hw.fc_pause_time = E1000_FC_PAUSE_TIME; |
623 | adapter->hw.fc_send_xon = 1; | |
624 | adapter->hw.fc = adapter->hw.original_fc; | |
625 | ||
2d7edb92 | 626 | /* Allow time for pending master requests to run */ |
1da177e4 | 627 | e1000_reset_hw(&adapter->hw); |
96838a40 | 628 | if (adapter->hw.mac_type >= e1000_82544) |
1da177e4 | 629 | E1000_WRITE_REG(&adapter->hw, WUC, 0); |
96838a40 | 630 | if (e1000_init_hw(&adapter->hw)) |
1da177e4 | 631 | DPRINTK(PROBE, ERR, "Hardware Error\n"); |
2d7edb92 | 632 | e1000_update_mng_vlan(adapter); |
1da177e4 LT |
633 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ |
634 | E1000_WRITE_REG(&adapter->hw, VET, ETHERNET_IEEE_VLAN_TYPE); | |
635 | ||
636 | e1000_reset_adaptive(&adapter->hw); | |
637 | e1000_phy_get_info(&adapter->hw, &adapter->phy_info); | |
2d7edb92 MC |
638 | if (adapter->en_mng_pt) { |
639 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
640 | manc |= (E1000_MANC_ARP_EN | E1000_MANC_EN_MNG2HOST); | |
641 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
642 | } | |
1da177e4 LT |
643 | } |
644 | ||
645 | /** | |
646 | * e1000_probe - Device Initialization Routine | |
647 | * @pdev: PCI device information struct | |
648 | * @ent: entry in e1000_pci_tbl | |
649 | * | |
650 | * Returns 0 on success, negative on failure | |
651 | * | |
652 | * e1000_probe initializes an adapter identified by a pci_dev structure. | |
653 | * The OS initialization, configuring of the adapter private structure, | |
654 | * and a hardware reset occur. | |
655 | **/ | |
656 | ||
657 | static int __devinit | |
658 | e1000_probe(struct pci_dev *pdev, | |
659 | const struct pci_device_id *ent) | |
660 | { | |
661 | struct net_device *netdev; | |
662 | struct e1000_adapter *adapter; | |
2d7edb92 | 663 | unsigned long mmio_start, mmio_len; |
2d7edb92 | 664 | |
1da177e4 | 665 | static int cards_found = 0; |
2d7edb92 | 666 | int i, err, pci_using_dac; |
1da177e4 LT |
667 | uint16_t eeprom_data; |
668 | uint16_t eeprom_apme_mask = E1000_EEPROM_APME; | |
96838a40 | 669 | if ((err = pci_enable_device(pdev))) |
1da177e4 LT |
670 | return err; |
671 | ||
96838a40 | 672 | if (!(err = pci_set_dma_mask(pdev, DMA_64BIT_MASK))) { |
1da177e4 LT |
673 | pci_using_dac = 1; |
674 | } else { | |
96838a40 | 675 | if ((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK))) { |
1da177e4 LT |
676 | E1000_ERR("No usable DMA configuration, aborting\n"); |
677 | return err; | |
678 | } | |
679 | pci_using_dac = 0; | |
680 | } | |
681 | ||
96838a40 | 682 | if ((err = pci_request_regions(pdev, e1000_driver_name))) |
1da177e4 LT |
683 | return err; |
684 | ||
685 | pci_set_master(pdev); | |
686 | ||
687 | netdev = alloc_etherdev(sizeof(struct e1000_adapter)); | |
96838a40 | 688 | if (!netdev) { |
1da177e4 LT |
689 | err = -ENOMEM; |
690 | goto err_alloc_etherdev; | |
691 | } | |
692 | ||
693 | SET_MODULE_OWNER(netdev); | |
694 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
695 | ||
696 | pci_set_drvdata(pdev, netdev); | |
60490fe0 | 697 | adapter = netdev_priv(netdev); |
1da177e4 LT |
698 | adapter->netdev = netdev; |
699 | adapter->pdev = pdev; | |
700 | adapter->hw.back = adapter; | |
701 | adapter->msg_enable = (1 << debug) - 1; | |
702 | ||
703 | mmio_start = pci_resource_start(pdev, BAR_0); | |
704 | mmio_len = pci_resource_len(pdev, BAR_0); | |
705 | ||
706 | adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); | |
96838a40 | 707 | if (!adapter->hw.hw_addr) { |
1da177e4 LT |
708 | err = -EIO; |
709 | goto err_ioremap; | |
710 | } | |
711 | ||
96838a40 JB |
712 | for (i = BAR_1; i <= BAR_5; i++) { |
713 | if (pci_resource_len(pdev, i) == 0) | |
1da177e4 | 714 | continue; |
96838a40 | 715 | if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { |
1da177e4 LT |
716 | adapter->hw.io_base = pci_resource_start(pdev, i); |
717 | break; | |
718 | } | |
719 | } | |
720 | ||
721 | netdev->open = &e1000_open; | |
722 | netdev->stop = &e1000_close; | |
723 | netdev->hard_start_xmit = &e1000_xmit_frame; | |
724 | netdev->get_stats = &e1000_get_stats; | |
725 | netdev->set_multicast_list = &e1000_set_multi; | |
726 | netdev->set_mac_address = &e1000_set_mac; | |
727 | netdev->change_mtu = &e1000_change_mtu; | |
728 | netdev->do_ioctl = &e1000_ioctl; | |
729 | e1000_set_ethtool_ops(netdev); | |
730 | netdev->tx_timeout = &e1000_tx_timeout; | |
731 | netdev->watchdog_timeo = 5 * HZ; | |
732 | #ifdef CONFIG_E1000_NAPI | |
733 | netdev->poll = &e1000_clean; | |
734 | netdev->weight = 64; | |
735 | #endif | |
736 | netdev->vlan_rx_register = e1000_vlan_rx_register; | |
737 | netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid; | |
738 | netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid; | |
739 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
740 | netdev->poll_controller = e1000_netpoll; | |
741 | #endif | |
742 | strcpy(netdev->name, pci_name(pdev)); | |
743 | ||
744 | netdev->mem_start = mmio_start; | |
745 | netdev->mem_end = mmio_start + mmio_len; | |
746 | netdev->base_addr = adapter->hw.io_base; | |
747 | ||
748 | adapter->bd_number = cards_found; | |
749 | ||
750 | /* setup the private structure */ | |
751 | ||
96838a40 | 752 | if ((err = e1000_sw_init(adapter))) |
1da177e4 LT |
753 | goto err_sw_init; |
754 | ||
96838a40 | 755 | if ((err = e1000_check_phy_reset_block(&adapter->hw))) |
2d7edb92 MC |
756 | DPRINTK(PROBE, INFO, "PHY reset is blocked due to SOL/IDER session.\n"); |
757 | ||
96838a40 | 758 | if (adapter->hw.mac_type >= e1000_82543) { |
1da177e4 LT |
759 | netdev->features = NETIF_F_SG | |
760 | NETIF_F_HW_CSUM | | |
761 | NETIF_F_HW_VLAN_TX | | |
762 | NETIF_F_HW_VLAN_RX | | |
763 | NETIF_F_HW_VLAN_FILTER; | |
764 | } | |
765 | ||
766 | #ifdef NETIF_F_TSO | |
96838a40 | 767 | if ((adapter->hw.mac_type >= e1000_82544) && |
1da177e4 LT |
768 | (adapter->hw.mac_type != e1000_82547)) |
769 | netdev->features |= NETIF_F_TSO; | |
2d7edb92 MC |
770 | |
771 | #ifdef NETIF_F_TSO_IPV6 | |
96838a40 | 772 | if (adapter->hw.mac_type > e1000_82547_rev_2) |
2d7edb92 MC |
773 | netdev->features |= NETIF_F_TSO_IPV6; |
774 | #endif | |
1da177e4 | 775 | #endif |
96838a40 | 776 | if (pci_using_dac) |
1da177e4 LT |
777 | netdev->features |= NETIF_F_HIGHDMA; |
778 | ||
779 | /* hard_start_xmit is safe against parallel locking */ | |
780 | netdev->features |= NETIF_F_LLTX; | |
781 | ||
2d7edb92 MC |
782 | adapter->en_mng_pt = e1000_enable_mng_pass_thru(&adapter->hw); |
783 | ||
96838a40 | 784 | /* before reading the EEPROM, reset the controller to |
1da177e4 | 785 | * put the device in a known good starting state */ |
96838a40 | 786 | |
1da177e4 LT |
787 | e1000_reset_hw(&adapter->hw); |
788 | ||
789 | /* make sure the EEPROM is good */ | |
790 | ||
96838a40 | 791 | if (e1000_validate_eeprom_checksum(&adapter->hw) < 0) { |
1da177e4 LT |
792 | DPRINTK(PROBE, ERR, "The EEPROM Checksum Is Not Valid\n"); |
793 | err = -EIO; | |
794 | goto err_eeprom; | |
795 | } | |
796 | ||
797 | /* copy the MAC address out of the EEPROM */ | |
798 | ||
96838a40 | 799 | if (e1000_read_mac_addr(&adapter->hw)) |
1da177e4 LT |
800 | DPRINTK(PROBE, ERR, "EEPROM Read Error\n"); |
801 | memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len); | |
9beb0ac1 | 802 | memcpy(netdev->perm_addr, adapter->hw.mac_addr, netdev->addr_len); |
1da177e4 | 803 | |
96838a40 | 804 | if (!is_valid_ether_addr(netdev->perm_addr)) { |
1da177e4 LT |
805 | DPRINTK(PROBE, ERR, "Invalid MAC Address\n"); |
806 | err = -EIO; | |
807 | goto err_eeprom; | |
808 | } | |
809 | ||
810 | e1000_read_part_num(&adapter->hw, &(adapter->part_num)); | |
811 | ||
812 | e1000_get_bus_info(&adapter->hw); | |
813 | ||
814 | init_timer(&adapter->tx_fifo_stall_timer); | |
815 | adapter->tx_fifo_stall_timer.function = &e1000_82547_tx_fifo_stall; | |
816 | adapter->tx_fifo_stall_timer.data = (unsigned long) adapter; | |
817 | ||
818 | init_timer(&adapter->watchdog_timer); | |
819 | adapter->watchdog_timer.function = &e1000_watchdog; | |
820 | adapter->watchdog_timer.data = (unsigned long) adapter; | |
821 | ||
822 | INIT_WORK(&adapter->watchdog_task, | |
823 | (void (*)(void *))e1000_watchdog_task, adapter); | |
824 | ||
825 | init_timer(&adapter->phy_info_timer); | |
826 | adapter->phy_info_timer.function = &e1000_update_phy_info; | |
827 | adapter->phy_info_timer.data = (unsigned long) adapter; | |
828 | ||
829 | INIT_WORK(&adapter->tx_timeout_task, | |
830 | (void (*)(void *))e1000_tx_timeout_task, netdev); | |
831 | ||
832 | /* we're going to reset, so assume we have no link for now */ | |
833 | ||
834 | netif_carrier_off(netdev); | |
835 | netif_stop_queue(netdev); | |
836 | ||
837 | e1000_check_options(adapter); | |
838 | ||
839 | /* Initial Wake on LAN setting | |
840 | * If APM wake is enabled in the EEPROM, | |
841 | * enable the ACPI Magic Packet filter | |
842 | */ | |
843 | ||
96838a40 | 844 | switch (adapter->hw.mac_type) { |
1da177e4 LT |
845 | case e1000_82542_rev2_0: |
846 | case e1000_82542_rev2_1: | |
847 | case e1000_82543: | |
848 | break; | |
849 | case e1000_82544: | |
850 | e1000_read_eeprom(&adapter->hw, | |
851 | EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data); | |
852 | eeprom_apme_mask = E1000_EEPROM_82544_APM; | |
853 | break; | |
854 | case e1000_82546: | |
855 | case e1000_82546_rev_3: | |
fd803241 | 856 | case e1000_82571: |
96838a40 | 857 | if (E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_FUNC_1){ |
1da177e4 LT |
858 | e1000_read_eeprom(&adapter->hw, |
859 | EEPROM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); | |
860 | break; | |
861 | } | |
862 | /* Fall Through */ | |
863 | default: | |
864 | e1000_read_eeprom(&adapter->hw, | |
865 | EEPROM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); | |
866 | break; | |
867 | } | |
96838a40 | 868 | if (eeprom_data & eeprom_apme_mask) |
1da177e4 LT |
869 | adapter->wol |= E1000_WUFC_MAG; |
870 | ||
fb3d47d4 JK |
871 | /* print bus type/speed/width info */ |
872 | { | |
873 | struct e1000_hw *hw = &adapter->hw; | |
874 | DPRINTK(PROBE, INFO, "(PCI%s:%s:%s) ", | |
875 | ((hw->bus_type == e1000_bus_type_pcix) ? "-X" : | |
876 | (hw->bus_type == e1000_bus_type_pci_express ? " Express":"")), | |
877 | ((hw->bus_speed == e1000_bus_speed_2500) ? "2.5Gb/s" : | |
878 | (hw->bus_speed == e1000_bus_speed_133) ? "133MHz" : | |
879 | (hw->bus_speed == e1000_bus_speed_120) ? "120MHz" : | |
880 | (hw->bus_speed == e1000_bus_speed_100) ? "100MHz" : | |
881 | (hw->bus_speed == e1000_bus_speed_66) ? "66MHz" : "33MHz"), | |
882 | ((hw->bus_width == e1000_bus_width_64) ? "64-bit" : | |
883 | (hw->bus_width == e1000_bus_width_pciex_4) ? "Width x4" : | |
884 | (hw->bus_width == e1000_bus_width_pciex_1) ? "Width x1" : | |
885 | "32-bit")); | |
886 | } | |
887 | ||
888 | for (i = 0; i < 6; i++) | |
889 | printk("%2.2x%c", netdev->dev_addr[i], i == 5 ? '\n' : ':'); | |
890 | ||
1da177e4 LT |
891 | /* reset the hardware with the new settings */ |
892 | e1000_reset(adapter); | |
893 | ||
b55ccb35 JK |
894 | /* If the controller is 82573 and f/w is AMT, do not set |
895 | * DRV_LOAD until the interface is up. For all other cases, | |
896 | * let the f/w know that the h/w is now under the control | |
897 | * of the driver. */ | |
898 | if (adapter->hw.mac_type != e1000_82573 || | |
899 | !e1000_check_mng_mode(&adapter->hw)) | |
900 | e1000_get_hw_control(adapter); | |
2d7edb92 | 901 | |
1da177e4 | 902 | strcpy(netdev->name, "eth%d"); |
96838a40 | 903 | if ((err = register_netdev(netdev))) |
1da177e4 LT |
904 | goto err_register; |
905 | ||
906 | DPRINTK(PROBE, INFO, "Intel(R) PRO/1000 Network Connection\n"); | |
907 | ||
908 | cards_found++; | |
909 | return 0; | |
910 | ||
911 | err_register: | |
912 | err_sw_init: | |
913 | err_eeprom: | |
914 | iounmap(adapter->hw.hw_addr); | |
915 | err_ioremap: | |
916 | free_netdev(netdev); | |
917 | err_alloc_etherdev: | |
918 | pci_release_regions(pdev); | |
919 | return err; | |
920 | } | |
921 | ||
922 | /** | |
923 | * e1000_remove - Device Removal Routine | |
924 | * @pdev: PCI device information struct | |
925 | * | |
926 | * e1000_remove is called by the PCI subsystem to alert the driver | |
927 | * that it should release a PCI device. The could be caused by a | |
928 | * Hot-Plug event, or because the driver is going to be removed from | |
929 | * memory. | |
930 | **/ | |
931 | ||
932 | static void __devexit | |
933 | e1000_remove(struct pci_dev *pdev) | |
934 | { | |
935 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 936 | struct e1000_adapter *adapter = netdev_priv(netdev); |
b55ccb35 | 937 | uint32_t manc; |
581d708e MC |
938 | #ifdef CONFIG_E1000_NAPI |
939 | int i; | |
940 | #endif | |
1da177e4 | 941 | |
be2b28ed JG |
942 | flush_scheduled_work(); |
943 | ||
96838a40 | 944 | if (adapter->hw.mac_type >= e1000_82540 && |
1da177e4 LT |
945 | adapter->hw.media_type == e1000_media_type_copper) { |
946 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
96838a40 | 947 | if (manc & E1000_MANC_SMBUS_EN) { |
1da177e4 LT |
948 | manc |= E1000_MANC_ARP_EN; |
949 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
950 | } | |
951 | } | |
952 | ||
b55ccb35 JK |
953 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
954 | * would have already happened in close and is redundant. */ | |
955 | e1000_release_hw_control(adapter); | |
2d7edb92 | 956 | |
1da177e4 | 957 | unregister_netdev(netdev); |
581d708e | 958 | #ifdef CONFIG_E1000_NAPI |
f56799ea | 959 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e MC |
960 | __dev_put(&adapter->polling_netdev[i]); |
961 | #endif | |
1da177e4 | 962 | |
96838a40 | 963 | if (!e1000_check_phy_reset_block(&adapter->hw)) |
2d7edb92 | 964 | e1000_phy_hw_reset(&adapter->hw); |
1da177e4 | 965 | |
24025e4e MC |
966 | kfree(adapter->tx_ring); |
967 | kfree(adapter->rx_ring); | |
968 | #ifdef CONFIG_E1000_NAPI | |
969 | kfree(adapter->polling_netdev); | |
970 | #endif | |
971 | ||
1da177e4 LT |
972 | iounmap(adapter->hw.hw_addr); |
973 | pci_release_regions(pdev); | |
974 | ||
24025e4e MC |
975 | #ifdef CONFIG_E1000_MQ |
976 | free_percpu(adapter->cpu_netdev); | |
977 | free_percpu(adapter->cpu_tx_ring); | |
978 | #endif | |
1da177e4 LT |
979 | free_netdev(netdev); |
980 | ||
981 | pci_disable_device(pdev); | |
982 | } | |
983 | ||
984 | /** | |
985 | * e1000_sw_init - Initialize general software structures (struct e1000_adapter) | |
986 | * @adapter: board private structure to initialize | |
987 | * | |
988 | * e1000_sw_init initializes the Adapter private data structure. | |
989 | * Fields are initialized based on PCI device information and | |
990 | * OS network device settings (MTU size). | |
991 | **/ | |
992 | ||
993 | static int __devinit | |
994 | e1000_sw_init(struct e1000_adapter *adapter) | |
995 | { | |
996 | struct e1000_hw *hw = &adapter->hw; | |
997 | struct net_device *netdev = adapter->netdev; | |
998 | struct pci_dev *pdev = adapter->pdev; | |
581d708e MC |
999 | #ifdef CONFIG_E1000_NAPI |
1000 | int i; | |
1001 | #endif | |
1da177e4 LT |
1002 | |
1003 | /* PCI config space info */ | |
1004 | ||
1005 | hw->vendor_id = pdev->vendor; | |
1006 | hw->device_id = pdev->device; | |
1007 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
1008 | hw->subsystem_id = pdev->subsystem_device; | |
1009 | ||
1010 | pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); | |
1011 | ||
1012 | pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word); | |
1013 | ||
1014 | adapter->rx_buffer_len = E1000_RXBUFFER_2048; | |
2d7edb92 | 1015 | adapter->rx_ps_bsize0 = E1000_RXBUFFER_256; |
1da177e4 LT |
1016 | hw->max_frame_size = netdev->mtu + |
1017 | ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; | |
1018 | hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE; | |
1019 | ||
1020 | /* identify the MAC */ | |
1021 | ||
96838a40 | 1022 | if (e1000_set_mac_type(hw)) { |
1da177e4 LT |
1023 | DPRINTK(PROBE, ERR, "Unknown MAC Type\n"); |
1024 | return -EIO; | |
1025 | } | |
1026 | ||
1027 | /* initialize eeprom parameters */ | |
1028 | ||
96838a40 | 1029 | if (e1000_init_eeprom_params(hw)) { |
2d7edb92 MC |
1030 | E1000_ERR("EEPROM initialization failed\n"); |
1031 | return -EIO; | |
1032 | } | |
1da177e4 | 1033 | |
96838a40 | 1034 | switch (hw->mac_type) { |
1da177e4 LT |
1035 | default: |
1036 | break; | |
1037 | case e1000_82541: | |
1038 | case e1000_82547: | |
1039 | case e1000_82541_rev_2: | |
1040 | case e1000_82547_rev_2: | |
1041 | hw->phy_init_script = 1; | |
1042 | break; | |
1043 | } | |
1044 | ||
1045 | e1000_set_media_type(hw); | |
1046 | ||
1047 | hw->wait_autoneg_complete = FALSE; | |
1048 | hw->tbi_compatibility_en = TRUE; | |
1049 | hw->adaptive_ifs = TRUE; | |
1050 | ||
1051 | /* Copper options */ | |
1052 | ||
96838a40 | 1053 | if (hw->media_type == e1000_media_type_copper) { |
1da177e4 LT |
1054 | hw->mdix = AUTO_ALL_MODES; |
1055 | hw->disable_polarity_correction = FALSE; | |
1056 | hw->master_slave = E1000_MASTER_SLAVE; | |
1057 | } | |
1058 | ||
24025e4e MC |
1059 | #ifdef CONFIG_E1000_MQ |
1060 | /* Number of supported queues */ | |
1061 | switch (hw->mac_type) { | |
1062 | case e1000_82571: | |
1063 | case e1000_82572: | |
f56799ea JK |
1064 | /* These controllers support 2 tx queues, but with a single |
1065 | * qdisc implementation, multiple tx queues aren't quite as | |
1066 | * interesting. If we can find a logical way of mapping | |
1067 | * flows to a queue, then perhaps we can up the num_tx_queue | |
1068 | * count back to its default. Until then, we run the risk of | |
1069 | * terrible performance due to SACK overload. */ | |
1070 | adapter->num_tx_queues = 1; | |
1071 | adapter->num_rx_queues = 2; | |
24025e4e MC |
1072 | break; |
1073 | default: | |
f56799ea JK |
1074 | adapter->num_tx_queues = 1; |
1075 | adapter->num_rx_queues = 1; | |
24025e4e MC |
1076 | break; |
1077 | } | |
f56799ea JK |
1078 | adapter->num_rx_queues = min(adapter->num_rx_queues, num_online_cpus()); |
1079 | adapter->num_tx_queues = min(adapter->num_tx_queues, num_online_cpus()); | |
7bfa4816 JK |
1080 | DPRINTK(DRV, INFO, "Multiqueue Enabled: Rx Queue count = %u %s\n", |
1081 | adapter->num_rx_queues, | |
1082 | ((adapter->num_rx_queues == 1) | |
1083 | ? ((num_online_cpus() > 1) | |
1084 | ? "(due to unsupported feature in current adapter)" | |
1085 | : "(due to unsupported system configuration)") | |
1086 | : "")); | |
1087 | DPRINTK(DRV, INFO, "Multiqueue Enabled: Tx Queue count = %u\n", | |
1088 | adapter->num_tx_queues); | |
24025e4e | 1089 | #else |
f56799ea JK |
1090 | adapter->num_tx_queues = 1; |
1091 | adapter->num_rx_queues = 1; | |
24025e4e | 1092 | #endif |
581d708e MC |
1093 | |
1094 | if (e1000_alloc_queues(adapter)) { | |
1095 | DPRINTK(PROBE, ERR, "Unable to allocate memory for queues\n"); | |
1096 | return -ENOMEM; | |
1097 | } | |
1098 | ||
1099 | #ifdef CONFIG_E1000_NAPI | |
f56799ea | 1100 | for (i = 0; i < adapter->num_rx_queues; i++) { |
581d708e MC |
1101 | adapter->polling_netdev[i].priv = adapter; |
1102 | adapter->polling_netdev[i].poll = &e1000_clean; | |
1103 | adapter->polling_netdev[i].weight = 64; | |
1104 | dev_hold(&adapter->polling_netdev[i]); | |
1105 | set_bit(__LINK_STATE_START, &adapter->polling_netdev[i].state); | |
1106 | } | |
7bfa4816 | 1107 | spin_lock_init(&adapter->tx_queue_lock); |
24025e4e MC |
1108 | #endif |
1109 | ||
1da177e4 LT |
1110 | atomic_set(&adapter->irq_sem, 1); |
1111 | spin_lock_init(&adapter->stats_lock); | |
1da177e4 LT |
1112 | |
1113 | return 0; | |
1114 | } | |
1115 | ||
581d708e MC |
1116 | /** |
1117 | * e1000_alloc_queues - Allocate memory for all rings | |
1118 | * @adapter: board private structure to initialize | |
1119 | * | |
1120 | * We allocate one ring per queue at run-time since we don't know the | |
1121 | * number of queues at compile-time. The polling_netdev array is | |
1122 | * intended for Multiqueue, but should work fine with a single queue. | |
1123 | **/ | |
1124 | ||
1125 | static int __devinit | |
1126 | e1000_alloc_queues(struct e1000_adapter *adapter) | |
1127 | { | |
1128 | int size; | |
1129 | ||
f56799ea | 1130 | size = sizeof(struct e1000_tx_ring) * adapter->num_tx_queues; |
581d708e MC |
1131 | adapter->tx_ring = kmalloc(size, GFP_KERNEL); |
1132 | if (!adapter->tx_ring) | |
1133 | return -ENOMEM; | |
1134 | memset(adapter->tx_ring, 0, size); | |
1135 | ||
f56799ea | 1136 | size = sizeof(struct e1000_rx_ring) * adapter->num_rx_queues; |
581d708e MC |
1137 | adapter->rx_ring = kmalloc(size, GFP_KERNEL); |
1138 | if (!adapter->rx_ring) { | |
1139 | kfree(adapter->tx_ring); | |
1140 | return -ENOMEM; | |
1141 | } | |
1142 | memset(adapter->rx_ring, 0, size); | |
1143 | ||
1144 | #ifdef CONFIG_E1000_NAPI | |
f56799ea | 1145 | size = sizeof(struct net_device) * adapter->num_rx_queues; |
581d708e MC |
1146 | adapter->polling_netdev = kmalloc(size, GFP_KERNEL); |
1147 | if (!adapter->polling_netdev) { | |
1148 | kfree(adapter->tx_ring); | |
1149 | kfree(adapter->rx_ring); | |
1150 | return -ENOMEM; | |
1151 | } | |
1152 | memset(adapter->polling_netdev, 0, size); | |
1153 | #endif | |
1154 | ||
7bfa4816 JK |
1155 | #ifdef CONFIG_E1000_MQ |
1156 | adapter->rx_sched_call_data.func = e1000_rx_schedule; | |
1157 | adapter->rx_sched_call_data.info = adapter->netdev; | |
1158 | ||
1159 | adapter->cpu_netdev = alloc_percpu(struct net_device *); | |
1160 | adapter->cpu_tx_ring = alloc_percpu(struct e1000_tx_ring *); | |
1161 | #endif | |
1162 | ||
581d708e MC |
1163 | return E1000_SUCCESS; |
1164 | } | |
1165 | ||
24025e4e MC |
1166 | #ifdef CONFIG_E1000_MQ |
1167 | static void __devinit | |
1168 | e1000_setup_queue_mapping(struct e1000_adapter *adapter) | |
1169 | { | |
1170 | int i, cpu; | |
1171 | ||
1172 | adapter->rx_sched_call_data.func = e1000_rx_schedule; | |
1173 | adapter->rx_sched_call_data.info = adapter->netdev; | |
1174 | cpus_clear(adapter->rx_sched_call_data.cpumask); | |
1175 | ||
1176 | adapter->cpu_netdev = alloc_percpu(struct net_device *); | |
1177 | adapter->cpu_tx_ring = alloc_percpu(struct e1000_tx_ring *); | |
1178 | ||
1179 | lock_cpu_hotplug(); | |
1180 | i = 0; | |
1181 | for_each_online_cpu(cpu) { | |
f56799ea | 1182 | *per_cpu_ptr(adapter->cpu_tx_ring, cpu) = &adapter->tx_ring[i % adapter->num_tx_queues]; |
24025e4e MC |
1183 | /* This is incomplete because we'd like to assign separate |
1184 | * physical cpus to these netdev polling structures and | |
1185 | * avoid saturating a subset of cpus. | |
1186 | */ | |
f56799ea | 1187 | if (i < adapter->num_rx_queues) { |
24025e4e | 1188 | *per_cpu_ptr(adapter->cpu_netdev, cpu) = &adapter->polling_netdev[i]; |
7bfa4816 JK |
1189 | adapter->rx_ring[i].cpu = cpu; |
1190 | cpu_set(cpu, adapter->cpumask); | |
24025e4e MC |
1191 | } else |
1192 | *per_cpu_ptr(adapter->cpu_netdev, cpu) = NULL; | |
1193 | ||
1194 | i++; | |
1195 | } | |
1196 | unlock_cpu_hotplug(); | |
1197 | } | |
1198 | #endif | |
1199 | ||
1da177e4 LT |
1200 | /** |
1201 | * e1000_open - Called when a network interface is made active | |
1202 | * @netdev: network interface device structure | |
1203 | * | |
1204 | * Returns 0 on success, negative value on failure | |
1205 | * | |
1206 | * The open entry point is called when a network interface is made | |
1207 | * active by the system (IFF_UP). At this point all resources needed | |
1208 | * for transmit and receive operations are allocated, the interrupt | |
1209 | * handler is registered with the OS, the watchdog timer is started, | |
1210 | * and the stack is notified that the interface is ready. | |
1211 | **/ | |
1212 | ||
1213 | static int | |
1214 | e1000_open(struct net_device *netdev) | |
1215 | { | |
60490fe0 | 1216 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1217 | int err; |
1218 | ||
1219 | /* allocate transmit descriptors */ | |
1220 | ||
581d708e | 1221 | if ((err = e1000_setup_all_tx_resources(adapter))) |
1da177e4 LT |
1222 | goto err_setup_tx; |
1223 | ||
1224 | /* allocate receive descriptors */ | |
1225 | ||
581d708e | 1226 | if ((err = e1000_setup_all_rx_resources(adapter))) |
1da177e4 LT |
1227 | goto err_setup_rx; |
1228 | ||
96838a40 | 1229 | if ((err = e1000_up(adapter))) |
1da177e4 | 1230 | goto err_up; |
2d7edb92 | 1231 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; |
96838a40 | 1232 | if ((adapter->hw.mng_cookie.status & |
2d7edb92 MC |
1233 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { |
1234 | e1000_update_mng_vlan(adapter); | |
1235 | } | |
1da177e4 | 1236 | |
b55ccb35 JK |
1237 | /* If AMT is enabled, let the firmware know that the network |
1238 | * interface is now open */ | |
1239 | if (adapter->hw.mac_type == e1000_82573 && | |
1240 | e1000_check_mng_mode(&adapter->hw)) | |
1241 | e1000_get_hw_control(adapter); | |
1242 | ||
1da177e4 LT |
1243 | return E1000_SUCCESS; |
1244 | ||
1245 | err_up: | |
581d708e | 1246 | e1000_free_all_rx_resources(adapter); |
1da177e4 | 1247 | err_setup_rx: |
581d708e | 1248 | e1000_free_all_tx_resources(adapter); |
1da177e4 LT |
1249 | err_setup_tx: |
1250 | e1000_reset(adapter); | |
1251 | ||
1252 | return err; | |
1253 | } | |
1254 | ||
1255 | /** | |
1256 | * e1000_close - Disables a network interface | |
1257 | * @netdev: network interface device structure | |
1258 | * | |
1259 | * Returns 0, this is not allowed to fail | |
1260 | * | |
1261 | * The close entry point is called when an interface is de-activated | |
1262 | * by the OS. The hardware is still under the drivers control, but | |
1263 | * needs to be disabled. A global MAC reset is issued to stop the | |
1264 | * hardware, and all transmit and receive resources are freed. | |
1265 | **/ | |
1266 | ||
1267 | static int | |
1268 | e1000_close(struct net_device *netdev) | |
1269 | { | |
60490fe0 | 1270 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
1271 | |
1272 | e1000_down(adapter); | |
1273 | ||
581d708e MC |
1274 | e1000_free_all_tx_resources(adapter); |
1275 | e1000_free_all_rx_resources(adapter); | |
1da177e4 | 1276 | |
96838a40 | 1277 | if ((adapter->hw.mng_cookie.status & |
2d7edb92 MC |
1278 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) { |
1279 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); | |
1280 | } | |
b55ccb35 JK |
1281 | |
1282 | /* If AMT is enabled, let the firmware know that the network | |
1283 | * interface is now closed */ | |
1284 | if (adapter->hw.mac_type == e1000_82573 && | |
1285 | e1000_check_mng_mode(&adapter->hw)) | |
1286 | e1000_release_hw_control(adapter); | |
1287 | ||
1da177e4 LT |
1288 | return 0; |
1289 | } | |
1290 | ||
1291 | /** | |
1292 | * e1000_check_64k_bound - check that memory doesn't cross 64kB boundary | |
1293 | * @adapter: address of board private structure | |
2d7edb92 MC |
1294 | * @start: address of beginning of memory |
1295 | * @len: length of memory | |
1da177e4 LT |
1296 | **/ |
1297 | static inline boolean_t | |
1298 | e1000_check_64k_bound(struct e1000_adapter *adapter, | |
1299 | void *start, unsigned long len) | |
1300 | { | |
1301 | unsigned long begin = (unsigned long) start; | |
1302 | unsigned long end = begin + len; | |
1303 | ||
2648345f MC |
1304 | /* First rev 82545 and 82546 need to not allow any memory |
1305 | * write location to cross 64k boundary due to errata 23 */ | |
1da177e4 | 1306 | if (adapter->hw.mac_type == e1000_82545 || |
2648345f | 1307 | adapter->hw.mac_type == e1000_82546) { |
1da177e4 LT |
1308 | return ((begin ^ (end - 1)) >> 16) != 0 ? FALSE : TRUE; |
1309 | } | |
1310 | ||
1311 | return TRUE; | |
1312 | } | |
1313 | ||
1314 | /** | |
1315 | * e1000_setup_tx_resources - allocate Tx resources (Descriptors) | |
1316 | * @adapter: board private structure | |
581d708e | 1317 | * @txdr: tx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1318 | * |
1319 | * Return 0 on success, negative on failure | |
1320 | **/ | |
1321 | ||
3ad2cc67 | 1322 | static int |
581d708e MC |
1323 | e1000_setup_tx_resources(struct e1000_adapter *adapter, |
1324 | struct e1000_tx_ring *txdr) | |
1da177e4 | 1325 | { |
1da177e4 LT |
1326 | struct pci_dev *pdev = adapter->pdev; |
1327 | int size; | |
1328 | ||
1329 | size = sizeof(struct e1000_buffer) * txdr->count; | |
a7ec15da RT |
1330 | |
1331 | txdr->buffer_info = vmalloc_node(size, pcibus_to_node(pdev->bus)); | |
96838a40 | 1332 | if (!txdr->buffer_info) { |
2648345f MC |
1333 | DPRINTK(PROBE, ERR, |
1334 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1da177e4 LT |
1335 | return -ENOMEM; |
1336 | } | |
1337 | memset(txdr->buffer_info, 0, size); | |
1338 | ||
1339 | /* round up to nearest 4K */ | |
1340 | ||
1341 | txdr->size = txdr->count * sizeof(struct e1000_tx_desc); | |
1342 | E1000_ROUNDUP(txdr->size, 4096); | |
1343 | ||
1344 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); | |
96838a40 | 1345 | if (!txdr->desc) { |
1da177e4 | 1346 | setup_tx_desc_die: |
1da177e4 | 1347 | vfree(txdr->buffer_info); |
2648345f MC |
1348 | DPRINTK(PROBE, ERR, |
1349 | "Unable to allocate memory for the transmit descriptor ring\n"); | |
1da177e4 LT |
1350 | return -ENOMEM; |
1351 | } | |
1352 | ||
2648345f | 1353 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1354 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { |
1355 | void *olddesc = txdr->desc; | |
1356 | dma_addr_t olddma = txdr->dma; | |
2648345f MC |
1357 | DPRINTK(TX_ERR, ERR, "txdr align check failed: %u bytes " |
1358 | "at %p\n", txdr->size, txdr->desc); | |
1359 | /* Try again, without freeing the previous */ | |
1da177e4 | 1360 | txdr->desc = pci_alloc_consistent(pdev, txdr->size, &txdr->dma); |
2648345f | 1361 | /* Failed allocation, critical failure */ |
96838a40 | 1362 | if (!txdr->desc) { |
1da177e4 LT |
1363 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1364 | goto setup_tx_desc_die; | |
1365 | } | |
1366 | ||
1367 | if (!e1000_check_64k_bound(adapter, txdr->desc, txdr->size)) { | |
1368 | /* give up */ | |
2648345f MC |
1369 | pci_free_consistent(pdev, txdr->size, txdr->desc, |
1370 | txdr->dma); | |
1da177e4 LT |
1371 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1372 | DPRINTK(PROBE, ERR, | |
2648345f MC |
1373 | "Unable to allocate aligned memory " |
1374 | "for the transmit descriptor ring\n"); | |
1da177e4 LT |
1375 | vfree(txdr->buffer_info); |
1376 | return -ENOMEM; | |
1377 | } else { | |
2648345f | 1378 | /* Free old allocation, new allocation was successful */ |
1da177e4 LT |
1379 | pci_free_consistent(pdev, txdr->size, olddesc, olddma); |
1380 | } | |
1381 | } | |
1382 | memset(txdr->desc, 0, txdr->size); | |
1383 | ||
1384 | txdr->next_to_use = 0; | |
1385 | txdr->next_to_clean = 0; | |
2ae76d98 | 1386 | spin_lock_init(&txdr->tx_lock); |
1da177e4 LT |
1387 | |
1388 | return 0; | |
1389 | } | |
1390 | ||
581d708e MC |
1391 | /** |
1392 | * e1000_setup_all_tx_resources - wrapper to allocate Tx resources | |
1393 | * (Descriptors) for all queues | |
1394 | * @adapter: board private structure | |
1395 | * | |
1396 | * If this function returns with an error, then it's possible one or | |
1397 | * more of the rings is populated (while the rest are not). It is the | |
1398 | * callers duty to clean those orphaned rings. | |
1399 | * | |
1400 | * Return 0 on success, negative on failure | |
1401 | **/ | |
1402 | ||
1403 | int | |
1404 | e1000_setup_all_tx_resources(struct e1000_adapter *adapter) | |
1405 | { | |
1406 | int i, err = 0; | |
1407 | ||
f56799ea | 1408 | for (i = 0; i < adapter->num_tx_queues; i++) { |
581d708e MC |
1409 | err = e1000_setup_tx_resources(adapter, &adapter->tx_ring[i]); |
1410 | if (err) { | |
1411 | DPRINTK(PROBE, ERR, | |
1412 | "Allocation for Tx Queue %u failed\n", i); | |
1413 | break; | |
1414 | } | |
1415 | } | |
1416 | ||
1417 | return err; | |
1418 | } | |
1419 | ||
1da177e4 LT |
1420 | /** |
1421 | * e1000_configure_tx - Configure 8254x Transmit Unit after Reset | |
1422 | * @adapter: board private structure | |
1423 | * | |
1424 | * Configure the Tx unit of the MAC after a reset. | |
1425 | **/ | |
1426 | ||
1427 | static void | |
1428 | e1000_configure_tx(struct e1000_adapter *adapter) | |
1429 | { | |
581d708e MC |
1430 | uint64_t tdba; |
1431 | struct e1000_hw *hw = &adapter->hw; | |
1432 | uint32_t tdlen, tctl, tipg, tarc; | |
0fadb059 | 1433 | uint32_t ipgr1, ipgr2; |
1da177e4 LT |
1434 | |
1435 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1436 | ||
f56799ea | 1437 | switch (adapter->num_tx_queues) { |
24025e4e MC |
1438 | case 2: |
1439 | tdba = adapter->tx_ring[1].dma; | |
1440 | tdlen = adapter->tx_ring[1].count * | |
1441 | sizeof(struct e1000_tx_desc); | |
1442 | E1000_WRITE_REG(hw, TDBAL1, (tdba & 0x00000000ffffffffULL)); | |
1443 | E1000_WRITE_REG(hw, TDBAH1, (tdba >> 32)); | |
1444 | E1000_WRITE_REG(hw, TDLEN1, tdlen); | |
1445 | E1000_WRITE_REG(hw, TDH1, 0); | |
1446 | E1000_WRITE_REG(hw, TDT1, 0); | |
1447 | adapter->tx_ring[1].tdh = E1000_TDH1; | |
1448 | adapter->tx_ring[1].tdt = E1000_TDT1; | |
1449 | /* Fall Through */ | |
1450 | case 1: | |
1451 | default: | |
581d708e MC |
1452 | tdba = adapter->tx_ring[0].dma; |
1453 | tdlen = adapter->tx_ring[0].count * | |
1454 | sizeof(struct e1000_tx_desc); | |
1455 | E1000_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL)); | |
1456 | E1000_WRITE_REG(hw, TDBAH, (tdba >> 32)); | |
1457 | E1000_WRITE_REG(hw, TDLEN, tdlen); | |
1458 | E1000_WRITE_REG(hw, TDH, 0); | |
1459 | E1000_WRITE_REG(hw, TDT, 0); | |
1460 | adapter->tx_ring[0].tdh = E1000_TDH; | |
1461 | adapter->tx_ring[0].tdt = E1000_TDT; | |
24025e4e MC |
1462 | break; |
1463 | } | |
1da177e4 LT |
1464 | |
1465 | /* Set the default values for the Tx Inter Packet Gap timer */ | |
1466 | ||
0fadb059 JK |
1467 | if (hw->media_type == e1000_media_type_fiber || |
1468 | hw->media_type == e1000_media_type_internal_serdes) | |
1469 | tipg = DEFAULT_82543_TIPG_IPGT_FIBER; | |
1470 | else | |
1471 | tipg = DEFAULT_82543_TIPG_IPGT_COPPER; | |
1472 | ||
581d708e | 1473 | switch (hw->mac_type) { |
1da177e4 LT |
1474 | case e1000_82542_rev2_0: |
1475 | case e1000_82542_rev2_1: | |
1476 | tipg = DEFAULT_82542_TIPG_IPGT; | |
0fadb059 JK |
1477 | ipgr1 = DEFAULT_82542_TIPG_IPGR1; |
1478 | ipgr2 = DEFAULT_82542_TIPG_IPGR2; | |
1da177e4 LT |
1479 | break; |
1480 | default: | |
0fadb059 JK |
1481 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; |
1482 | ipgr2 = DEFAULT_82543_TIPG_IPGR2; | |
1483 | break; | |
1da177e4 | 1484 | } |
0fadb059 JK |
1485 | tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; |
1486 | tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; | |
581d708e | 1487 | E1000_WRITE_REG(hw, TIPG, tipg); |
1da177e4 LT |
1488 | |
1489 | /* Set the Tx Interrupt Delay register */ | |
1490 | ||
581d708e MC |
1491 | E1000_WRITE_REG(hw, TIDV, adapter->tx_int_delay); |
1492 | if (hw->mac_type >= e1000_82540) | |
1493 | E1000_WRITE_REG(hw, TADV, adapter->tx_abs_int_delay); | |
1da177e4 LT |
1494 | |
1495 | /* Program the Transmit Control Register */ | |
1496 | ||
581d708e | 1497 | tctl = E1000_READ_REG(hw, TCTL); |
1da177e4 LT |
1498 | |
1499 | tctl &= ~E1000_TCTL_CT; | |
24025e4e | 1500 | tctl |= E1000_TCTL_EN | E1000_TCTL_PSP | E1000_TCTL_RTLC | |
1da177e4 LT |
1501 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); |
1502 | ||
581d708e | 1503 | E1000_WRITE_REG(hw, TCTL, tctl); |
1da177e4 | 1504 | |
2ae76d98 MC |
1505 | if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) { |
1506 | tarc = E1000_READ_REG(hw, TARC0); | |
1507 | tarc |= ((1 << 25) | (1 << 21)); | |
1508 | E1000_WRITE_REG(hw, TARC0, tarc); | |
1509 | tarc = E1000_READ_REG(hw, TARC1); | |
1510 | tarc |= (1 << 25); | |
1511 | if (tctl & E1000_TCTL_MULR) | |
1512 | tarc &= ~(1 << 28); | |
1513 | else | |
1514 | tarc |= (1 << 28); | |
1515 | E1000_WRITE_REG(hw, TARC1, tarc); | |
1516 | } | |
1517 | ||
581d708e | 1518 | e1000_config_collision_dist(hw); |
1da177e4 LT |
1519 | |
1520 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
1521 | adapter->txd_cmd = E1000_TXD_CMD_IDE | E1000_TXD_CMD_EOP | | |
1522 | E1000_TXD_CMD_IFCS; | |
1523 | ||
581d708e | 1524 | if (hw->mac_type < e1000_82543) |
1da177e4 LT |
1525 | adapter->txd_cmd |= E1000_TXD_CMD_RPS; |
1526 | else | |
1527 | adapter->txd_cmd |= E1000_TXD_CMD_RS; | |
1528 | ||
1529 | /* Cache if we're 82544 running in PCI-X because we'll | |
1530 | * need this to apply a workaround later in the send path. */ | |
581d708e MC |
1531 | if (hw->mac_type == e1000_82544 && |
1532 | hw->bus_type == e1000_bus_type_pcix) | |
1da177e4 LT |
1533 | adapter->pcix_82544 = 1; |
1534 | } | |
1535 | ||
1536 | /** | |
1537 | * e1000_setup_rx_resources - allocate Rx resources (Descriptors) | |
1538 | * @adapter: board private structure | |
581d708e | 1539 | * @rxdr: rx descriptor ring (for a specific queue) to setup |
1da177e4 LT |
1540 | * |
1541 | * Returns 0 on success, negative on failure | |
1542 | **/ | |
1543 | ||
3ad2cc67 | 1544 | static int |
581d708e MC |
1545 | e1000_setup_rx_resources(struct e1000_adapter *adapter, |
1546 | struct e1000_rx_ring *rxdr) | |
1da177e4 | 1547 | { |
1da177e4 | 1548 | struct pci_dev *pdev = adapter->pdev; |
2d7edb92 | 1549 | int size, desc_len; |
1da177e4 LT |
1550 | |
1551 | size = sizeof(struct e1000_buffer) * rxdr->count; | |
a7ec15da | 1552 | rxdr->buffer_info = vmalloc_node(size, pcibus_to_node(pdev->bus)); |
581d708e | 1553 | if (!rxdr->buffer_info) { |
2648345f MC |
1554 | DPRINTK(PROBE, ERR, |
1555 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1da177e4 LT |
1556 | return -ENOMEM; |
1557 | } | |
1558 | memset(rxdr->buffer_info, 0, size); | |
1559 | ||
2d7edb92 MC |
1560 | size = sizeof(struct e1000_ps_page) * rxdr->count; |
1561 | rxdr->ps_page = kmalloc(size, GFP_KERNEL); | |
96838a40 | 1562 | if (!rxdr->ps_page) { |
2d7edb92 MC |
1563 | vfree(rxdr->buffer_info); |
1564 | DPRINTK(PROBE, ERR, | |
1565 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1566 | return -ENOMEM; | |
1567 | } | |
1568 | memset(rxdr->ps_page, 0, size); | |
1569 | ||
1570 | size = sizeof(struct e1000_ps_page_dma) * rxdr->count; | |
1571 | rxdr->ps_page_dma = kmalloc(size, GFP_KERNEL); | |
96838a40 | 1572 | if (!rxdr->ps_page_dma) { |
2d7edb92 MC |
1573 | vfree(rxdr->buffer_info); |
1574 | kfree(rxdr->ps_page); | |
1575 | DPRINTK(PROBE, ERR, | |
1576 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1577 | return -ENOMEM; | |
1578 | } | |
1579 | memset(rxdr->ps_page_dma, 0, size); | |
1580 | ||
96838a40 | 1581 | if (adapter->hw.mac_type <= e1000_82547_rev_2) |
2d7edb92 MC |
1582 | desc_len = sizeof(struct e1000_rx_desc); |
1583 | else | |
1584 | desc_len = sizeof(union e1000_rx_desc_packet_split); | |
1585 | ||
1da177e4 LT |
1586 | /* Round up to nearest 4K */ |
1587 | ||
2d7edb92 | 1588 | rxdr->size = rxdr->count * desc_len; |
1da177e4 LT |
1589 | E1000_ROUNDUP(rxdr->size, 4096); |
1590 | ||
1591 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); | |
1592 | ||
581d708e MC |
1593 | if (!rxdr->desc) { |
1594 | DPRINTK(PROBE, ERR, | |
1595 | "Unable to allocate memory for the receive descriptor ring\n"); | |
1da177e4 | 1596 | setup_rx_desc_die: |
1da177e4 | 1597 | vfree(rxdr->buffer_info); |
2d7edb92 MC |
1598 | kfree(rxdr->ps_page); |
1599 | kfree(rxdr->ps_page_dma); | |
1da177e4 LT |
1600 | return -ENOMEM; |
1601 | } | |
1602 | ||
2648345f | 1603 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
1604 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { |
1605 | void *olddesc = rxdr->desc; | |
1606 | dma_addr_t olddma = rxdr->dma; | |
2648345f MC |
1607 | DPRINTK(RX_ERR, ERR, "rxdr align check failed: %u bytes " |
1608 | "at %p\n", rxdr->size, rxdr->desc); | |
1609 | /* Try again, without freeing the previous */ | |
1da177e4 | 1610 | rxdr->desc = pci_alloc_consistent(pdev, rxdr->size, &rxdr->dma); |
2648345f | 1611 | /* Failed allocation, critical failure */ |
581d708e | 1612 | if (!rxdr->desc) { |
1da177e4 | 1613 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
581d708e MC |
1614 | DPRINTK(PROBE, ERR, |
1615 | "Unable to allocate memory " | |
1616 | "for the receive descriptor ring\n"); | |
1da177e4 LT |
1617 | goto setup_rx_desc_die; |
1618 | } | |
1619 | ||
1620 | if (!e1000_check_64k_bound(adapter, rxdr->desc, rxdr->size)) { | |
1621 | /* give up */ | |
2648345f MC |
1622 | pci_free_consistent(pdev, rxdr->size, rxdr->desc, |
1623 | rxdr->dma); | |
1da177e4 | 1624 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
2648345f MC |
1625 | DPRINTK(PROBE, ERR, |
1626 | "Unable to allocate aligned memory " | |
1627 | "for the receive descriptor ring\n"); | |
581d708e | 1628 | goto setup_rx_desc_die; |
1da177e4 | 1629 | } else { |
2648345f | 1630 | /* Free old allocation, new allocation was successful */ |
1da177e4 LT |
1631 | pci_free_consistent(pdev, rxdr->size, olddesc, olddma); |
1632 | } | |
1633 | } | |
1634 | memset(rxdr->desc, 0, rxdr->size); | |
1635 | ||
1636 | rxdr->next_to_clean = 0; | |
1637 | rxdr->next_to_use = 0; | |
1638 | ||
1639 | return 0; | |
1640 | } | |
1641 | ||
581d708e MC |
1642 | /** |
1643 | * e1000_setup_all_rx_resources - wrapper to allocate Rx resources | |
1644 | * (Descriptors) for all queues | |
1645 | * @adapter: board private structure | |
1646 | * | |
1647 | * If this function returns with an error, then it's possible one or | |
1648 | * more of the rings is populated (while the rest are not). It is the | |
1649 | * callers duty to clean those orphaned rings. | |
1650 | * | |
1651 | * Return 0 on success, negative on failure | |
1652 | **/ | |
1653 | ||
1654 | int | |
1655 | e1000_setup_all_rx_resources(struct e1000_adapter *adapter) | |
1656 | { | |
1657 | int i, err = 0; | |
1658 | ||
f56799ea | 1659 | for (i = 0; i < adapter->num_rx_queues; i++) { |
581d708e MC |
1660 | err = e1000_setup_rx_resources(adapter, &adapter->rx_ring[i]); |
1661 | if (err) { | |
1662 | DPRINTK(PROBE, ERR, | |
1663 | "Allocation for Rx Queue %u failed\n", i); | |
1664 | break; | |
1665 | } | |
1666 | } | |
1667 | ||
1668 | return err; | |
1669 | } | |
1670 | ||
1da177e4 | 1671 | /** |
2648345f | 1672 | * e1000_setup_rctl - configure the receive control registers |
1da177e4 LT |
1673 | * @adapter: Board private structure |
1674 | **/ | |
e4c811c9 MC |
1675 | #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ |
1676 | (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) | |
1da177e4 LT |
1677 | static void |
1678 | e1000_setup_rctl(struct e1000_adapter *adapter) | |
1679 | { | |
2d7edb92 MC |
1680 | uint32_t rctl, rfctl; |
1681 | uint32_t psrctl = 0; | |
35ec56bb | 1682 | #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT |
e4c811c9 MC |
1683 | uint32_t pages = 0; |
1684 | #endif | |
1da177e4 LT |
1685 | |
1686 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
1687 | ||
1688 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
1689 | ||
1690 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | | |
1691 | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | | |
1692 | (adapter->hw.mc_filter_type << E1000_RCTL_MO_SHIFT); | |
1693 | ||
0fadb059 JK |
1694 | if (adapter->hw.mac_type > e1000_82543) |
1695 | rctl |= E1000_RCTL_SECRC; | |
1696 | ||
1697 | if (adapter->hw.tbi_compatibility_on == 1) | |
1da177e4 LT |
1698 | rctl |= E1000_RCTL_SBP; |
1699 | else | |
1700 | rctl &= ~E1000_RCTL_SBP; | |
1701 | ||
2d7edb92 MC |
1702 | if (adapter->netdev->mtu <= ETH_DATA_LEN) |
1703 | rctl &= ~E1000_RCTL_LPE; | |
1704 | else | |
1705 | rctl |= E1000_RCTL_LPE; | |
1706 | ||
1da177e4 | 1707 | /* Setup buffer sizes */ |
96838a40 | 1708 | if (adapter->hw.mac_type >= e1000_82571) { |
2d7edb92 MC |
1709 | /* We can now specify buffers in 1K increments. |
1710 | * BSIZE and BSEX are ignored in this case. */ | |
1711 | rctl |= adapter->rx_buffer_len << 0x11; | |
1712 | } else { | |
1713 | rctl &= ~E1000_RCTL_SZ_4096; | |
a1415ee6 JK |
1714 | rctl |= E1000_RCTL_BSEX; |
1715 | switch (adapter->rx_buffer_len) { | |
1716 | case E1000_RXBUFFER_2048: | |
1717 | default: | |
1718 | rctl |= E1000_RCTL_SZ_2048; | |
1719 | rctl &= ~E1000_RCTL_BSEX; | |
1720 | break; | |
1721 | case E1000_RXBUFFER_4096: | |
1722 | rctl |= E1000_RCTL_SZ_4096; | |
1723 | break; | |
1724 | case E1000_RXBUFFER_8192: | |
1725 | rctl |= E1000_RCTL_SZ_8192; | |
1726 | break; | |
1727 | case E1000_RXBUFFER_16384: | |
1728 | rctl |= E1000_RCTL_SZ_16384; | |
1729 | break; | |
1730 | } | |
2d7edb92 MC |
1731 | } |
1732 | ||
35ec56bb | 1733 | #ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT |
2d7edb92 MC |
1734 | /* 82571 and greater support packet-split where the protocol |
1735 | * header is placed in skb->data and the packet data is | |
1736 | * placed in pages hanging off of skb_shinfo(skb)->nr_frags. | |
1737 | * In the case of a non-split, skb->data is linearly filled, | |
1738 | * followed by the page buffers. Therefore, skb->data is | |
1739 | * sized to hold the largest protocol header. | |
1740 | */ | |
e4c811c9 MC |
1741 | pages = PAGE_USE_COUNT(adapter->netdev->mtu); |
1742 | if ((adapter->hw.mac_type > e1000_82547_rev_2) && (pages <= 3) && | |
1743 | PAGE_SIZE <= 16384) | |
1744 | adapter->rx_ps_pages = pages; | |
1745 | else | |
1746 | adapter->rx_ps_pages = 0; | |
2d7edb92 | 1747 | #endif |
e4c811c9 | 1748 | if (adapter->rx_ps_pages) { |
2d7edb92 MC |
1749 | /* Configure extra packet-split registers */ |
1750 | rfctl = E1000_READ_REG(&adapter->hw, RFCTL); | |
1751 | rfctl |= E1000_RFCTL_EXTEN; | |
1752 | /* disable IPv6 packet split support */ | |
1753 | rfctl |= E1000_RFCTL_IPV6_DIS; | |
1754 | E1000_WRITE_REG(&adapter->hw, RFCTL, rfctl); | |
1755 | ||
1756 | rctl |= E1000_RCTL_DTYP_PS | E1000_RCTL_SECRC; | |
96838a40 | 1757 | |
2d7edb92 MC |
1758 | psrctl |= adapter->rx_ps_bsize0 >> |
1759 | E1000_PSRCTL_BSIZE0_SHIFT; | |
e4c811c9 MC |
1760 | |
1761 | switch (adapter->rx_ps_pages) { | |
1762 | case 3: | |
1763 | psrctl |= PAGE_SIZE << | |
1764 | E1000_PSRCTL_BSIZE3_SHIFT; | |
1765 | case 2: | |
1766 | psrctl |= PAGE_SIZE << | |
1767 | E1000_PSRCTL_BSIZE2_SHIFT; | |
1768 | case 1: | |
1769 | psrctl |= PAGE_SIZE >> | |
1770 | E1000_PSRCTL_BSIZE1_SHIFT; | |
1771 | break; | |
1772 | } | |
2d7edb92 MC |
1773 | |
1774 | E1000_WRITE_REG(&adapter->hw, PSRCTL, psrctl); | |
1da177e4 LT |
1775 | } |
1776 | ||
1777 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
1778 | } | |
1779 | ||
1780 | /** | |
1781 | * e1000_configure_rx - Configure 8254x Receive Unit after Reset | |
1782 | * @adapter: board private structure | |
1783 | * | |
1784 | * Configure the Rx unit of the MAC after a reset. | |
1785 | **/ | |
1786 | ||
1787 | static void | |
1788 | e1000_configure_rx(struct e1000_adapter *adapter) | |
1789 | { | |
581d708e MC |
1790 | uint64_t rdba; |
1791 | struct e1000_hw *hw = &adapter->hw; | |
1792 | uint32_t rdlen, rctl, rxcsum, ctrl_ext; | |
1793 | #ifdef CONFIG_E1000_MQ | |
1794 | uint32_t reta, mrqc; | |
1795 | int i; | |
1796 | #endif | |
2d7edb92 | 1797 | |
e4c811c9 | 1798 | if (adapter->rx_ps_pages) { |
581d708e | 1799 | rdlen = adapter->rx_ring[0].count * |
2d7edb92 MC |
1800 | sizeof(union e1000_rx_desc_packet_split); |
1801 | adapter->clean_rx = e1000_clean_rx_irq_ps; | |
1802 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; | |
1803 | } else { | |
581d708e MC |
1804 | rdlen = adapter->rx_ring[0].count * |
1805 | sizeof(struct e1000_rx_desc); | |
2d7edb92 MC |
1806 | adapter->clean_rx = e1000_clean_rx_irq; |
1807 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers; | |
1808 | } | |
1da177e4 LT |
1809 | |
1810 | /* disable receives while setting up the descriptors */ | |
581d708e MC |
1811 | rctl = E1000_READ_REG(hw, RCTL); |
1812 | E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); | |
1da177e4 LT |
1813 | |
1814 | /* set the Receive Delay Timer Register */ | |
581d708e | 1815 | E1000_WRITE_REG(hw, RDTR, adapter->rx_int_delay); |
1da177e4 | 1816 | |
581d708e MC |
1817 | if (hw->mac_type >= e1000_82540) { |
1818 | E1000_WRITE_REG(hw, RADV, adapter->rx_abs_int_delay); | |
96838a40 | 1819 | if (adapter->itr > 1) |
581d708e | 1820 | E1000_WRITE_REG(hw, ITR, |
1da177e4 LT |
1821 | 1000000000 / (adapter->itr * 256)); |
1822 | } | |
1823 | ||
2ae76d98 | 1824 | if (hw->mac_type >= e1000_82571) { |
2ae76d98 | 1825 | ctrl_ext = E1000_READ_REG(hw, CTRL_EXT); |
1e613fd9 | 1826 | /* Reset delay timers after every interrupt */ |
2ae76d98 | 1827 | ctrl_ext |= E1000_CTRL_EXT_CANC; |
1e613fd9 JK |
1828 | #ifdef CONFIG_E1000_NAPI |
1829 | /* Auto-Mask interrupts upon ICR read. */ | |
1830 | ctrl_ext |= E1000_CTRL_EXT_IAME; | |
1831 | #endif | |
2ae76d98 | 1832 | E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); |
1e613fd9 | 1833 | E1000_WRITE_REG(hw, IAM, ~0); |
2ae76d98 MC |
1834 | E1000_WRITE_FLUSH(hw); |
1835 | } | |
1836 | ||
581d708e MC |
1837 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
1838 | * the Base and Length of the Rx Descriptor Ring */ | |
f56799ea | 1839 | switch (adapter->num_rx_queues) { |
24025e4e MC |
1840 | #ifdef CONFIG_E1000_MQ |
1841 | case 2: | |
1842 | rdba = adapter->rx_ring[1].dma; | |
1843 | E1000_WRITE_REG(hw, RDBAL1, (rdba & 0x00000000ffffffffULL)); | |
1844 | E1000_WRITE_REG(hw, RDBAH1, (rdba >> 32)); | |
1845 | E1000_WRITE_REG(hw, RDLEN1, rdlen); | |
1846 | E1000_WRITE_REG(hw, RDH1, 0); | |
1847 | E1000_WRITE_REG(hw, RDT1, 0); | |
1848 | adapter->rx_ring[1].rdh = E1000_RDH1; | |
1849 | adapter->rx_ring[1].rdt = E1000_RDT1; | |
1850 | /* Fall Through */ | |
1851 | #endif | |
1852 | case 1: | |
1853 | default: | |
581d708e MC |
1854 | rdba = adapter->rx_ring[0].dma; |
1855 | E1000_WRITE_REG(hw, RDBAL, (rdba & 0x00000000ffffffffULL)); | |
1856 | E1000_WRITE_REG(hw, RDBAH, (rdba >> 32)); | |
1857 | E1000_WRITE_REG(hw, RDLEN, rdlen); | |
1858 | E1000_WRITE_REG(hw, RDH, 0); | |
1859 | E1000_WRITE_REG(hw, RDT, 0); | |
1860 | adapter->rx_ring[0].rdh = E1000_RDH; | |
1861 | adapter->rx_ring[0].rdt = E1000_RDT; | |
1862 | break; | |
24025e4e MC |
1863 | } |
1864 | ||
1865 | #ifdef CONFIG_E1000_MQ | |
f56799ea | 1866 | if (adapter->num_rx_queues > 1) { |
24025e4e MC |
1867 | uint32_t random[10]; |
1868 | ||
1869 | get_random_bytes(&random[0], 40); | |
1870 | ||
1871 | if (hw->mac_type <= e1000_82572) { | |
1872 | E1000_WRITE_REG(hw, RSSIR, 0); | |
1873 | E1000_WRITE_REG(hw, RSSIM, 0); | |
1874 | } | |
1875 | ||
f56799ea | 1876 | switch (adapter->num_rx_queues) { |
24025e4e MC |
1877 | case 2: |
1878 | default: | |
1879 | reta = 0x00800080; | |
1880 | mrqc = E1000_MRQC_ENABLE_RSS_2Q; | |
1881 | break; | |
1882 | } | |
1883 | ||
1884 | /* Fill out redirection table */ | |
1885 | for (i = 0; i < 32; i++) | |
1886 | E1000_WRITE_REG_ARRAY(hw, RETA, i, reta); | |
1887 | /* Fill out hash function seeds */ | |
1888 | for (i = 0; i < 10; i++) | |
1889 | E1000_WRITE_REG_ARRAY(hw, RSSRK, i, random[i]); | |
1890 | ||
1891 | mrqc |= (E1000_MRQC_RSS_FIELD_IPV4 | | |
1892 | E1000_MRQC_RSS_FIELD_IPV4_TCP); | |
1893 | E1000_WRITE_REG(hw, MRQC, mrqc); | |
1894 | } | |
1895 | ||
1896 | /* Multiqueue and packet checksumming are mutually exclusive. */ | |
1897 | if (hw->mac_type >= e1000_82571) { | |
1898 | rxcsum = E1000_READ_REG(hw, RXCSUM); | |
1899 | rxcsum |= E1000_RXCSUM_PCSD; | |
1900 | E1000_WRITE_REG(hw, RXCSUM, rxcsum); | |
1901 | } | |
1902 | ||
1903 | #else | |
1da177e4 LT |
1904 | |
1905 | /* Enable 82543 Receive Checksum Offload for TCP and UDP */ | |
581d708e MC |
1906 | if (hw->mac_type >= e1000_82543) { |
1907 | rxcsum = E1000_READ_REG(hw, RXCSUM); | |
96838a40 | 1908 | if (adapter->rx_csum == TRUE) { |
2d7edb92 MC |
1909 | rxcsum |= E1000_RXCSUM_TUOFL; |
1910 | ||
868d5309 | 1911 | /* Enable 82571 IPv4 payload checksum for UDP fragments |
2d7edb92 | 1912 | * Must be used in conjunction with packet-split. */ |
96838a40 JB |
1913 | if ((hw->mac_type >= e1000_82571) && |
1914 | (adapter->rx_ps_pages)) { | |
2d7edb92 MC |
1915 | rxcsum |= E1000_RXCSUM_IPPCSE; |
1916 | } | |
1917 | } else { | |
1918 | rxcsum &= ~E1000_RXCSUM_TUOFL; | |
1919 | /* don't need to clear IPPCSE as it defaults to 0 */ | |
1920 | } | |
581d708e | 1921 | E1000_WRITE_REG(hw, RXCSUM, rxcsum); |
1da177e4 | 1922 | } |
24025e4e | 1923 | #endif /* CONFIG_E1000_MQ */ |
1da177e4 | 1924 | |
581d708e MC |
1925 | if (hw->mac_type == e1000_82573) |
1926 | E1000_WRITE_REG(hw, ERT, 0x0100); | |
2d7edb92 | 1927 | |
1da177e4 | 1928 | /* Enable Receives */ |
581d708e | 1929 | E1000_WRITE_REG(hw, RCTL, rctl); |
1da177e4 LT |
1930 | } |
1931 | ||
1932 | /** | |
581d708e | 1933 | * e1000_free_tx_resources - Free Tx Resources per Queue |
1da177e4 | 1934 | * @adapter: board private structure |
581d708e | 1935 | * @tx_ring: Tx descriptor ring for a specific queue |
1da177e4 LT |
1936 | * |
1937 | * Free all transmit software resources | |
1938 | **/ | |
1939 | ||
3ad2cc67 | 1940 | static void |
581d708e MC |
1941 | e1000_free_tx_resources(struct e1000_adapter *adapter, |
1942 | struct e1000_tx_ring *tx_ring) | |
1da177e4 LT |
1943 | { |
1944 | struct pci_dev *pdev = adapter->pdev; | |
1945 | ||
581d708e | 1946 | e1000_clean_tx_ring(adapter, tx_ring); |
1da177e4 | 1947 | |
581d708e MC |
1948 | vfree(tx_ring->buffer_info); |
1949 | tx_ring->buffer_info = NULL; | |
1da177e4 | 1950 | |
581d708e | 1951 | pci_free_consistent(pdev, tx_ring->size, tx_ring->desc, tx_ring->dma); |
1da177e4 | 1952 | |
581d708e MC |
1953 | tx_ring->desc = NULL; |
1954 | } | |
1955 | ||
1956 | /** | |
1957 | * e1000_free_all_tx_resources - Free Tx Resources for All Queues | |
1958 | * @adapter: board private structure | |
1959 | * | |
1960 | * Free all transmit software resources | |
1961 | **/ | |
1962 | ||
1963 | void | |
1964 | e1000_free_all_tx_resources(struct e1000_adapter *adapter) | |
1965 | { | |
1966 | int i; | |
1967 | ||
f56799ea | 1968 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 1969 | e1000_free_tx_resources(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
1970 | } |
1971 | ||
1972 | static inline void | |
1973 | e1000_unmap_and_free_tx_resource(struct e1000_adapter *adapter, | |
1974 | struct e1000_buffer *buffer_info) | |
1975 | { | |
96838a40 | 1976 | if (buffer_info->dma) { |
2648345f MC |
1977 | pci_unmap_page(adapter->pdev, |
1978 | buffer_info->dma, | |
1979 | buffer_info->length, | |
1980 | PCI_DMA_TODEVICE); | |
1da177e4 | 1981 | } |
8241e35e | 1982 | if (buffer_info->skb) |
1da177e4 | 1983 | dev_kfree_skb_any(buffer_info->skb); |
8241e35e | 1984 | memset(buffer_info, 0, sizeof(struct e1000_buffer)); |
1da177e4 LT |
1985 | } |
1986 | ||
1987 | /** | |
1988 | * e1000_clean_tx_ring - Free Tx Buffers | |
1989 | * @adapter: board private structure | |
581d708e | 1990 | * @tx_ring: ring to be cleaned |
1da177e4 LT |
1991 | **/ |
1992 | ||
1993 | static void | |
581d708e MC |
1994 | e1000_clean_tx_ring(struct e1000_adapter *adapter, |
1995 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 1996 | { |
1da177e4 LT |
1997 | struct e1000_buffer *buffer_info; |
1998 | unsigned long size; | |
1999 | unsigned int i; | |
2000 | ||
2001 | /* Free all the Tx ring sk_buffs */ | |
2002 | ||
96838a40 | 2003 | for (i = 0; i < tx_ring->count; i++) { |
1da177e4 LT |
2004 | buffer_info = &tx_ring->buffer_info[i]; |
2005 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); | |
2006 | } | |
2007 | ||
2008 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
2009 | memset(tx_ring->buffer_info, 0, size); | |
2010 | ||
2011 | /* Zero out the descriptor ring */ | |
2012 | ||
2013 | memset(tx_ring->desc, 0, tx_ring->size); | |
2014 | ||
2015 | tx_ring->next_to_use = 0; | |
2016 | tx_ring->next_to_clean = 0; | |
fd803241 | 2017 | tx_ring->last_tx_tso = 0; |
1da177e4 | 2018 | |
581d708e MC |
2019 | writel(0, adapter->hw.hw_addr + tx_ring->tdh); |
2020 | writel(0, adapter->hw.hw_addr + tx_ring->tdt); | |
2021 | } | |
2022 | ||
2023 | /** | |
2024 | * e1000_clean_all_tx_rings - Free Tx Buffers for all queues | |
2025 | * @adapter: board private structure | |
2026 | **/ | |
2027 | ||
2028 | static void | |
2029 | e1000_clean_all_tx_rings(struct e1000_adapter *adapter) | |
2030 | { | |
2031 | int i; | |
2032 | ||
f56799ea | 2033 | for (i = 0; i < adapter->num_tx_queues; i++) |
581d708e | 2034 | e1000_clean_tx_ring(adapter, &adapter->tx_ring[i]); |
1da177e4 LT |
2035 | } |
2036 | ||
2037 | /** | |
2038 | * e1000_free_rx_resources - Free Rx Resources | |
2039 | * @adapter: board private structure | |
581d708e | 2040 | * @rx_ring: ring to clean the resources from |
1da177e4 LT |
2041 | * |
2042 | * Free all receive software resources | |
2043 | **/ | |
2044 | ||
3ad2cc67 | 2045 | static void |
581d708e MC |
2046 | e1000_free_rx_resources(struct e1000_adapter *adapter, |
2047 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 2048 | { |
1da177e4 LT |
2049 | struct pci_dev *pdev = adapter->pdev; |
2050 | ||
581d708e | 2051 | e1000_clean_rx_ring(adapter, rx_ring); |
1da177e4 LT |
2052 | |
2053 | vfree(rx_ring->buffer_info); | |
2054 | rx_ring->buffer_info = NULL; | |
2d7edb92 MC |
2055 | kfree(rx_ring->ps_page); |
2056 | rx_ring->ps_page = NULL; | |
2057 | kfree(rx_ring->ps_page_dma); | |
2058 | rx_ring->ps_page_dma = NULL; | |
1da177e4 LT |
2059 | |
2060 | pci_free_consistent(pdev, rx_ring->size, rx_ring->desc, rx_ring->dma); | |
2061 | ||
2062 | rx_ring->desc = NULL; | |
2063 | } | |
2064 | ||
2065 | /** | |
581d708e | 2066 | * e1000_free_all_rx_resources - Free Rx Resources for All Queues |
1da177e4 | 2067 | * @adapter: board private structure |
581d708e MC |
2068 | * |
2069 | * Free all receive software resources | |
2070 | **/ | |
2071 | ||
2072 | void | |
2073 | e1000_free_all_rx_resources(struct e1000_adapter *adapter) | |
2074 | { | |
2075 | int i; | |
2076 | ||
f56799ea | 2077 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e MC |
2078 | e1000_free_rx_resources(adapter, &adapter->rx_ring[i]); |
2079 | } | |
2080 | ||
2081 | /** | |
2082 | * e1000_clean_rx_ring - Free Rx Buffers per Queue | |
2083 | * @adapter: board private structure | |
2084 | * @rx_ring: ring to free buffers from | |
1da177e4 LT |
2085 | **/ |
2086 | ||
2087 | static void | |
581d708e MC |
2088 | e1000_clean_rx_ring(struct e1000_adapter *adapter, |
2089 | struct e1000_rx_ring *rx_ring) | |
1da177e4 | 2090 | { |
1da177e4 | 2091 | struct e1000_buffer *buffer_info; |
2d7edb92 MC |
2092 | struct e1000_ps_page *ps_page; |
2093 | struct e1000_ps_page_dma *ps_page_dma; | |
1da177e4 LT |
2094 | struct pci_dev *pdev = adapter->pdev; |
2095 | unsigned long size; | |
2d7edb92 | 2096 | unsigned int i, j; |
1da177e4 LT |
2097 | |
2098 | /* Free all the Rx ring sk_buffs */ | |
96838a40 | 2099 | for (i = 0; i < rx_ring->count; i++) { |
1da177e4 | 2100 | buffer_info = &rx_ring->buffer_info[i]; |
96838a40 | 2101 | if (buffer_info->skb) { |
1da177e4 LT |
2102 | pci_unmap_single(pdev, |
2103 | buffer_info->dma, | |
2104 | buffer_info->length, | |
2105 | PCI_DMA_FROMDEVICE); | |
2106 | ||
2107 | dev_kfree_skb(buffer_info->skb); | |
2108 | buffer_info->skb = NULL; | |
997f5cbd JK |
2109 | } |
2110 | ps_page = &rx_ring->ps_page[i]; | |
2111 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
2112 | for (j = 0; j < adapter->rx_ps_pages; j++) { | |
2113 | if (!ps_page->ps_page[j]) break; | |
2114 | pci_unmap_page(pdev, | |
2115 | ps_page_dma->ps_page_dma[j], | |
2116 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
2117 | ps_page_dma->ps_page_dma[j] = 0; | |
2118 | put_page(ps_page->ps_page[j]); | |
2119 | ps_page->ps_page[j] = NULL; | |
1da177e4 LT |
2120 | } |
2121 | } | |
2122 | ||
2123 | size = sizeof(struct e1000_buffer) * rx_ring->count; | |
2124 | memset(rx_ring->buffer_info, 0, size); | |
2d7edb92 MC |
2125 | size = sizeof(struct e1000_ps_page) * rx_ring->count; |
2126 | memset(rx_ring->ps_page, 0, size); | |
2127 | size = sizeof(struct e1000_ps_page_dma) * rx_ring->count; | |
2128 | memset(rx_ring->ps_page_dma, 0, size); | |
1da177e4 LT |
2129 | |
2130 | /* Zero out the descriptor ring */ | |
2131 | ||
2132 | memset(rx_ring->desc, 0, rx_ring->size); | |
2133 | ||
2134 | rx_ring->next_to_clean = 0; | |
2135 | rx_ring->next_to_use = 0; | |
2136 | ||
581d708e MC |
2137 | writel(0, adapter->hw.hw_addr + rx_ring->rdh); |
2138 | writel(0, adapter->hw.hw_addr + rx_ring->rdt); | |
2139 | } | |
2140 | ||
2141 | /** | |
2142 | * e1000_clean_all_rx_rings - Free Rx Buffers for all queues | |
2143 | * @adapter: board private structure | |
2144 | **/ | |
2145 | ||
2146 | static void | |
2147 | e1000_clean_all_rx_rings(struct e1000_adapter *adapter) | |
2148 | { | |
2149 | int i; | |
2150 | ||
f56799ea | 2151 | for (i = 0; i < adapter->num_rx_queues; i++) |
581d708e | 2152 | e1000_clean_rx_ring(adapter, &adapter->rx_ring[i]); |
1da177e4 LT |
2153 | } |
2154 | ||
2155 | /* The 82542 2.0 (revision 2) needs to have the receive unit in reset | |
2156 | * and memory write and invalidate disabled for certain operations | |
2157 | */ | |
2158 | static void | |
2159 | e1000_enter_82542_rst(struct e1000_adapter *adapter) | |
2160 | { | |
2161 | struct net_device *netdev = adapter->netdev; | |
2162 | uint32_t rctl; | |
2163 | ||
2164 | e1000_pci_clear_mwi(&adapter->hw); | |
2165 | ||
2166 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
2167 | rctl |= E1000_RCTL_RST; | |
2168 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2169 | E1000_WRITE_FLUSH(&adapter->hw); | |
2170 | mdelay(5); | |
2171 | ||
96838a40 | 2172 | if (netif_running(netdev)) |
581d708e | 2173 | e1000_clean_all_rx_rings(adapter); |
1da177e4 LT |
2174 | } |
2175 | ||
2176 | static void | |
2177 | e1000_leave_82542_rst(struct e1000_adapter *adapter) | |
2178 | { | |
2179 | struct net_device *netdev = adapter->netdev; | |
2180 | uint32_t rctl; | |
2181 | ||
2182 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
2183 | rctl &= ~E1000_RCTL_RST; | |
2184 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2185 | E1000_WRITE_FLUSH(&adapter->hw); | |
2186 | mdelay(5); | |
2187 | ||
96838a40 | 2188 | if (adapter->hw.pci_cmd_word & PCI_COMMAND_INVALIDATE) |
1da177e4 LT |
2189 | e1000_pci_set_mwi(&adapter->hw); |
2190 | ||
96838a40 | 2191 | if (netif_running(netdev)) { |
72d64a43 JK |
2192 | /* No need to loop, because 82542 supports only 1 queue */ |
2193 | struct e1000_rx_ring *ring = &adapter->rx_ring[0]; | |
7c4d3367 | 2194 | e1000_configure_rx(adapter); |
72d64a43 | 2195 | adapter->alloc_rx_buf(adapter, ring, E1000_DESC_UNUSED(ring)); |
1da177e4 LT |
2196 | } |
2197 | } | |
2198 | ||
2199 | /** | |
2200 | * e1000_set_mac - Change the Ethernet Address of the NIC | |
2201 | * @netdev: network interface device structure | |
2202 | * @p: pointer to an address structure | |
2203 | * | |
2204 | * Returns 0 on success, negative on failure | |
2205 | **/ | |
2206 | ||
2207 | static int | |
2208 | e1000_set_mac(struct net_device *netdev, void *p) | |
2209 | { | |
60490fe0 | 2210 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2211 | struct sockaddr *addr = p; |
2212 | ||
96838a40 | 2213 | if (!is_valid_ether_addr(addr->sa_data)) |
1da177e4 LT |
2214 | return -EADDRNOTAVAIL; |
2215 | ||
2216 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2217 | ||
96838a40 | 2218 | if (adapter->hw.mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2219 | e1000_enter_82542_rst(adapter); |
2220 | ||
2221 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
2222 | memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len); | |
2223 | ||
2224 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0); | |
2225 | ||
868d5309 MC |
2226 | /* With 82571 controllers, LAA may be overwritten (with the default) |
2227 | * due to controller reset from the other port. */ | |
2228 | if (adapter->hw.mac_type == e1000_82571) { | |
2229 | /* activate the work around */ | |
2230 | adapter->hw.laa_is_present = 1; | |
2231 | ||
96838a40 JB |
2232 | /* Hold a copy of the LAA in RAR[14] This is done so that |
2233 | * between the time RAR[0] gets clobbered and the time it | |
2234 | * gets fixed (in e1000_watchdog), the actual LAA is in one | |
868d5309 | 2235 | * of the RARs and no incoming packets directed to this port |
96838a40 | 2236 | * are dropped. Eventaully the LAA will be in RAR[0] and |
868d5309 | 2237 | * RAR[14] */ |
96838a40 | 2238 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, |
868d5309 MC |
2239 | E1000_RAR_ENTRIES - 1); |
2240 | } | |
2241 | ||
96838a40 | 2242 | if (adapter->hw.mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2243 | e1000_leave_82542_rst(adapter); |
2244 | ||
2245 | return 0; | |
2246 | } | |
2247 | ||
2248 | /** | |
2249 | * e1000_set_multi - Multicast and Promiscuous mode set | |
2250 | * @netdev: network interface device structure | |
2251 | * | |
2252 | * The set_multi entry point is called whenever the multicast address | |
2253 | * list or the network interface flags are updated. This routine is | |
2254 | * responsible for configuring the hardware for proper multicast, | |
2255 | * promiscuous mode, and all-multi behavior. | |
2256 | **/ | |
2257 | ||
2258 | static void | |
2259 | e1000_set_multi(struct net_device *netdev) | |
2260 | { | |
60490fe0 | 2261 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
2262 | struct e1000_hw *hw = &adapter->hw; |
2263 | struct dev_mc_list *mc_ptr; | |
2264 | uint32_t rctl; | |
2265 | uint32_t hash_value; | |
868d5309 | 2266 | int i, rar_entries = E1000_RAR_ENTRIES; |
1da177e4 | 2267 | |
868d5309 MC |
2268 | /* reserve RAR[14] for LAA over-write work-around */ |
2269 | if (adapter->hw.mac_type == e1000_82571) | |
2270 | rar_entries--; | |
1da177e4 | 2271 | |
2648345f MC |
2272 | /* Check for Promiscuous and All Multicast modes */ |
2273 | ||
1da177e4 LT |
2274 | rctl = E1000_READ_REG(hw, RCTL); |
2275 | ||
96838a40 | 2276 | if (netdev->flags & IFF_PROMISC) { |
1da177e4 | 2277 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
96838a40 | 2278 | } else if (netdev->flags & IFF_ALLMULTI) { |
1da177e4 LT |
2279 | rctl |= E1000_RCTL_MPE; |
2280 | rctl &= ~E1000_RCTL_UPE; | |
2281 | } else { | |
2282 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); | |
2283 | } | |
2284 | ||
2285 | E1000_WRITE_REG(hw, RCTL, rctl); | |
2286 | ||
2287 | /* 82542 2.0 needs to be in reset to write receive address registers */ | |
2288 | ||
96838a40 | 2289 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 LT |
2290 | e1000_enter_82542_rst(adapter); |
2291 | ||
2292 | /* load the first 14 multicast address into the exact filters 1-14 | |
2293 | * RAR 0 is used for the station MAC adddress | |
2294 | * if there are not 14 addresses, go ahead and clear the filters | |
868d5309 | 2295 | * -- with 82571 controllers only 0-13 entries are filled here |
1da177e4 LT |
2296 | */ |
2297 | mc_ptr = netdev->mc_list; | |
2298 | ||
96838a40 | 2299 | for (i = 1; i < rar_entries; i++) { |
868d5309 | 2300 | if (mc_ptr) { |
1da177e4 LT |
2301 | e1000_rar_set(hw, mc_ptr->dmi_addr, i); |
2302 | mc_ptr = mc_ptr->next; | |
2303 | } else { | |
2304 | E1000_WRITE_REG_ARRAY(hw, RA, i << 1, 0); | |
2305 | E1000_WRITE_REG_ARRAY(hw, RA, (i << 1) + 1, 0); | |
2306 | } | |
2307 | } | |
2308 | ||
2309 | /* clear the old settings from the multicast hash table */ | |
2310 | ||
96838a40 | 2311 | for (i = 0; i < E1000_NUM_MTA_REGISTERS; i++) |
1da177e4 LT |
2312 | E1000_WRITE_REG_ARRAY(hw, MTA, i, 0); |
2313 | ||
2314 | /* load any remaining addresses into the hash table */ | |
2315 | ||
96838a40 | 2316 | for (; mc_ptr; mc_ptr = mc_ptr->next) { |
1da177e4 LT |
2317 | hash_value = e1000_hash_mc_addr(hw, mc_ptr->dmi_addr); |
2318 | e1000_mta_set(hw, hash_value); | |
2319 | } | |
2320 | ||
96838a40 | 2321 | if (hw->mac_type == e1000_82542_rev2_0) |
1da177e4 | 2322 | e1000_leave_82542_rst(adapter); |
1da177e4 LT |
2323 | } |
2324 | ||
2325 | /* Need to wait a few seconds after link up to get diagnostic information from | |
2326 | * the phy */ | |
2327 | ||
2328 | static void | |
2329 | e1000_update_phy_info(unsigned long data) | |
2330 | { | |
2331 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
2332 | e1000_phy_get_info(&adapter->hw, &adapter->phy_info); | |
2333 | } | |
2334 | ||
2335 | /** | |
2336 | * e1000_82547_tx_fifo_stall - Timer Call-back | |
2337 | * @data: pointer to adapter cast into an unsigned long | |
2338 | **/ | |
2339 | ||
2340 | static void | |
2341 | e1000_82547_tx_fifo_stall(unsigned long data) | |
2342 | { | |
2343 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
2344 | struct net_device *netdev = adapter->netdev; | |
2345 | uint32_t tctl; | |
2346 | ||
96838a40 JB |
2347 | if (atomic_read(&adapter->tx_fifo_stall)) { |
2348 | if ((E1000_READ_REG(&adapter->hw, TDT) == | |
1da177e4 LT |
2349 | E1000_READ_REG(&adapter->hw, TDH)) && |
2350 | (E1000_READ_REG(&adapter->hw, TDFT) == | |
2351 | E1000_READ_REG(&adapter->hw, TDFH)) && | |
2352 | (E1000_READ_REG(&adapter->hw, TDFTS) == | |
2353 | E1000_READ_REG(&adapter->hw, TDFHS))) { | |
2354 | tctl = E1000_READ_REG(&adapter->hw, TCTL); | |
2355 | E1000_WRITE_REG(&adapter->hw, TCTL, | |
2356 | tctl & ~E1000_TCTL_EN); | |
2357 | E1000_WRITE_REG(&adapter->hw, TDFT, | |
2358 | adapter->tx_head_addr); | |
2359 | E1000_WRITE_REG(&adapter->hw, TDFH, | |
2360 | adapter->tx_head_addr); | |
2361 | E1000_WRITE_REG(&adapter->hw, TDFTS, | |
2362 | adapter->tx_head_addr); | |
2363 | E1000_WRITE_REG(&adapter->hw, TDFHS, | |
2364 | adapter->tx_head_addr); | |
2365 | E1000_WRITE_REG(&adapter->hw, TCTL, tctl); | |
2366 | E1000_WRITE_FLUSH(&adapter->hw); | |
2367 | ||
2368 | adapter->tx_fifo_head = 0; | |
2369 | atomic_set(&adapter->tx_fifo_stall, 0); | |
2370 | netif_wake_queue(netdev); | |
2371 | } else { | |
2372 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies + 1); | |
2373 | } | |
2374 | } | |
2375 | } | |
2376 | ||
2377 | /** | |
2378 | * e1000_watchdog - Timer Call-back | |
2379 | * @data: pointer to adapter cast into an unsigned long | |
2380 | **/ | |
2381 | static void | |
2382 | e1000_watchdog(unsigned long data) | |
2383 | { | |
2384 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
2385 | ||
2386 | /* Do the rest outside of interrupt context */ | |
2387 | schedule_work(&adapter->watchdog_task); | |
2388 | } | |
2389 | ||
2390 | static void | |
2391 | e1000_watchdog_task(struct e1000_adapter *adapter) | |
2392 | { | |
2393 | struct net_device *netdev = adapter->netdev; | |
545c67c0 | 2394 | struct e1000_tx_ring *txdr = adapter->tx_ring; |
1da177e4 LT |
2395 | uint32_t link; |
2396 | ||
2397 | e1000_check_for_link(&adapter->hw); | |
2d7edb92 MC |
2398 | if (adapter->hw.mac_type == e1000_82573) { |
2399 | e1000_enable_tx_pkt_filtering(&adapter->hw); | |
96838a40 | 2400 | if (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id) |
2d7edb92 | 2401 | e1000_update_mng_vlan(adapter); |
96838a40 | 2402 | } |
1da177e4 | 2403 | |
96838a40 | 2404 | if ((adapter->hw.media_type == e1000_media_type_internal_serdes) && |
1da177e4 LT |
2405 | !(E1000_READ_REG(&adapter->hw, TXCW) & E1000_TXCW_ANE)) |
2406 | link = !adapter->hw.serdes_link_down; | |
2407 | else | |
2408 | link = E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU; | |
2409 | ||
96838a40 JB |
2410 | if (link) { |
2411 | if (!netif_carrier_ok(netdev)) { | |
1da177e4 LT |
2412 | e1000_get_speed_and_duplex(&adapter->hw, |
2413 | &adapter->link_speed, | |
2414 | &adapter->link_duplex); | |
2415 | ||
2416 | DPRINTK(LINK, INFO, "NIC Link is Up %d Mbps %s\n", | |
2417 | adapter->link_speed, | |
2418 | adapter->link_duplex == FULL_DUPLEX ? | |
2419 | "Full Duplex" : "Half Duplex"); | |
2420 | ||
66a2b0a3 JK |
2421 | /* tweak tx_queue_len according to speed/duplex */ |
2422 | netdev->tx_queue_len = adapter->tx_queue_len; | |
2423 | adapter->tx_timeout_factor = 1; | |
2424 | if (adapter->link_duplex == HALF_DUPLEX) { | |
2425 | switch (adapter->link_speed) { | |
2426 | case SPEED_10: | |
2427 | netdev->tx_queue_len = 10; | |
2428 | adapter->tx_timeout_factor = 8; | |
2429 | break; | |
2430 | case SPEED_100: | |
2431 | netdev->tx_queue_len = 100; | |
2432 | break; | |
2433 | } | |
2434 | } | |
2435 | ||
1da177e4 LT |
2436 | netif_carrier_on(netdev); |
2437 | netif_wake_queue(netdev); | |
2438 | mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ); | |
2439 | adapter->smartspeed = 0; | |
2440 | } | |
2441 | } else { | |
96838a40 | 2442 | if (netif_carrier_ok(netdev)) { |
1da177e4 LT |
2443 | adapter->link_speed = 0; |
2444 | adapter->link_duplex = 0; | |
2445 | DPRINTK(LINK, INFO, "NIC Link is Down\n"); | |
2446 | netif_carrier_off(netdev); | |
2447 | netif_stop_queue(netdev); | |
2448 | mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ); | |
2449 | } | |
2450 | ||
2451 | e1000_smartspeed(adapter); | |
2452 | } | |
2453 | ||
2454 | e1000_update_stats(adapter); | |
2455 | ||
2456 | adapter->hw.tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; | |
2457 | adapter->tpt_old = adapter->stats.tpt; | |
2458 | adapter->hw.collision_delta = adapter->stats.colc - adapter->colc_old; | |
2459 | adapter->colc_old = adapter->stats.colc; | |
2460 | ||
2461 | adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; | |
2462 | adapter->gorcl_old = adapter->stats.gorcl; | |
2463 | adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; | |
2464 | adapter->gotcl_old = adapter->stats.gotcl; | |
2465 | ||
2466 | e1000_update_adaptive(&adapter->hw); | |
2467 | ||
f56799ea JK |
2468 | #ifdef CONFIG_E1000_MQ |
2469 | txdr = *per_cpu_ptr(adapter->cpu_tx_ring, smp_processor_id()); | |
2470 | #endif | |
2471 | if (!netif_carrier_ok(netdev)) { | |
581d708e | 2472 | if (E1000_DESC_UNUSED(txdr) + 1 < txdr->count) { |
1da177e4 LT |
2473 | /* We've lost link, so the controller stops DMA, |
2474 | * but we've got queued Tx work that's never going | |
2475 | * to get done, so reset controller to flush Tx. | |
2476 | * (Do the reset outside of interrupt context). */ | |
2477 | schedule_work(&adapter->tx_timeout_task); | |
2478 | } | |
2479 | } | |
2480 | ||
2481 | /* Dynamic mode for Interrupt Throttle Rate (ITR) */ | |
96838a40 | 2482 | if (adapter->hw.mac_type >= e1000_82540 && adapter->itr == 1) { |
1da177e4 LT |
2483 | /* Symmetric Tx/Rx gets a reduced ITR=2000; Total |
2484 | * asymmetrical Tx or Rx gets ITR=8000; everyone | |
2485 | * else is between 2000-8000. */ | |
2486 | uint32_t goc = (adapter->gotcl + adapter->gorcl) / 10000; | |
96838a40 | 2487 | uint32_t dif = (adapter->gotcl > adapter->gorcl ? |
1da177e4 LT |
2488 | adapter->gotcl - adapter->gorcl : |
2489 | adapter->gorcl - adapter->gotcl) / 10000; | |
2490 | uint32_t itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; | |
2491 | E1000_WRITE_REG(&adapter->hw, ITR, 1000000000 / (itr * 256)); | |
2492 | } | |
2493 | ||
2494 | /* Cause software interrupt to ensure rx ring is cleaned */ | |
2495 | E1000_WRITE_REG(&adapter->hw, ICS, E1000_ICS_RXDMT0); | |
2496 | ||
2648345f | 2497 | /* Force detection of hung controller every watchdog period */ |
1da177e4 LT |
2498 | adapter->detect_tx_hung = TRUE; |
2499 | ||
96838a40 | 2500 | /* With 82571 controllers, LAA may be overwritten due to controller |
868d5309 MC |
2501 | * reset from the other port. Set the appropriate LAA in RAR[0] */ |
2502 | if (adapter->hw.mac_type == e1000_82571 && adapter->hw.laa_is_present) | |
2503 | e1000_rar_set(&adapter->hw, adapter->hw.mac_addr, 0); | |
2504 | ||
1da177e4 LT |
2505 | /* Reset the timer */ |
2506 | mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ); | |
2507 | } | |
2508 | ||
2509 | #define E1000_TX_FLAGS_CSUM 0x00000001 | |
2510 | #define E1000_TX_FLAGS_VLAN 0x00000002 | |
2511 | #define E1000_TX_FLAGS_TSO 0x00000004 | |
2d7edb92 | 2512 | #define E1000_TX_FLAGS_IPV4 0x00000008 |
1da177e4 LT |
2513 | #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 |
2514 | #define E1000_TX_FLAGS_VLAN_SHIFT 16 | |
2515 | ||
2516 | static inline int | |
581d708e MC |
2517 | e1000_tso(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2518 | struct sk_buff *skb) | |
1da177e4 LT |
2519 | { |
2520 | #ifdef NETIF_F_TSO | |
2521 | struct e1000_context_desc *context_desc; | |
545c67c0 | 2522 | struct e1000_buffer *buffer_info; |
1da177e4 LT |
2523 | unsigned int i; |
2524 | uint32_t cmd_length = 0; | |
2d7edb92 | 2525 | uint16_t ipcse = 0, tucse, mss; |
1da177e4 LT |
2526 | uint8_t ipcss, ipcso, tucss, tucso, hdr_len; |
2527 | int err; | |
2528 | ||
96838a40 | 2529 | if (skb_shinfo(skb)->tso_size) { |
1da177e4 LT |
2530 | if (skb_header_cloned(skb)) { |
2531 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
2532 | if (err) | |
2533 | return err; | |
2534 | } | |
2535 | ||
2536 | hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2)); | |
2537 | mss = skb_shinfo(skb)->tso_size; | |
96838a40 | 2538 | if (skb->protocol == ntohs(ETH_P_IP)) { |
2d7edb92 MC |
2539 | skb->nh.iph->tot_len = 0; |
2540 | skb->nh.iph->check = 0; | |
2541 | skb->h.th->check = | |
2542 | ~csum_tcpudp_magic(skb->nh.iph->saddr, | |
2543 | skb->nh.iph->daddr, | |
2544 | 0, | |
2545 | IPPROTO_TCP, | |
2546 | 0); | |
2547 | cmd_length = E1000_TXD_CMD_IP; | |
2548 | ipcse = skb->h.raw - skb->data - 1; | |
2549 | #ifdef NETIF_F_TSO_IPV6 | |
96838a40 | 2550 | } else if (skb->protocol == ntohs(ETH_P_IPV6)) { |
2d7edb92 MC |
2551 | skb->nh.ipv6h->payload_len = 0; |
2552 | skb->h.th->check = | |
2553 | ~csum_ipv6_magic(&skb->nh.ipv6h->saddr, | |
2554 | &skb->nh.ipv6h->daddr, | |
2555 | 0, | |
2556 | IPPROTO_TCP, | |
2557 | 0); | |
2558 | ipcse = 0; | |
2559 | #endif | |
2560 | } | |
1da177e4 LT |
2561 | ipcss = skb->nh.raw - skb->data; |
2562 | ipcso = (void *)&(skb->nh.iph->check) - (void *)skb->data; | |
1da177e4 LT |
2563 | tucss = skb->h.raw - skb->data; |
2564 | tucso = (void *)&(skb->h.th->check) - (void *)skb->data; | |
2565 | tucse = 0; | |
2566 | ||
2567 | cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | | |
2d7edb92 | 2568 | E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); |
1da177e4 | 2569 | |
581d708e MC |
2570 | i = tx_ring->next_to_use; |
2571 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
545c67c0 | 2572 | buffer_info = &tx_ring->buffer_info[i]; |
1da177e4 LT |
2573 | |
2574 | context_desc->lower_setup.ip_fields.ipcss = ipcss; | |
2575 | context_desc->lower_setup.ip_fields.ipcso = ipcso; | |
2576 | context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); | |
2577 | context_desc->upper_setup.tcp_fields.tucss = tucss; | |
2578 | context_desc->upper_setup.tcp_fields.tucso = tucso; | |
2579 | context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); | |
2580 | context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); | |
2581 | context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; | |
2582 | context_desc->cmd_and_length = cpu_to_le32(cmd_length); | |
2583 | ||
545c67c0 JK |
2584 | buffer_info->time_stamp = jiffies; |
2585 | ||
581d708e MC |
2586 | if (++i == tx_ring->count) i = 0; |
2587 | tx_ring->next_to_use = i; | |
1da177e4 | 2588 | |
8241e35e | 2589 | return TRUE; |
1da177e4 LT |
2590 | } |
2591 | #endif | |
2592 | ||
8241e35e | 2593 | return FALSE; |
1da177e4 LT |
2594 | } |
2595 | ||
2596 | static inline boolean_t | |
581d708e MC |
2597 | e1000_tx_csum(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2598 | struct sk_buff *skb) | |
1da177e4 LT |
2599 | { |
2600 | struct e1000_context_desc *context_desc; | |
545c67c0 | 2601 | struct e1000_buffer *buffer_info; |
1da177e4 LT |
2602 | unsigned int i; |
2603 | uint8_t css; | |
2604 | ||
96838a40 | 2605 | if (likely(skb->ip_summed == CHECKSUM_HW)) { |
1da177e4 LT |
2606 | css = skb->h.raw - skb->data; |
2607 | ||
581d708e | 2608 | i = tx_ring->next_to_use; |
545c67c0 | 2609 | buffer_info = &tx_ring->buffer_info[i]; |
581d708e | 2610 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); |
1da177e4 LT |
2611 | |
2612 | context_desc->upper_setup.tcp_fields.tucss = css; | |
2613 | context_desc->upper_setup.tcp_fields.tucso = css + skb->csum; | |
2614 | context_desc->upper_setup.tcp_fields.tucse = 0; | |
2615 | context_desc->tcp_seg_setup.data = 0; | |
2616 | context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT); | |
2617 | ||
545c67c0 JK |
2618 | buffer_info->time_stamp = jiffies; |
2619 | ||
581d708e MC |
2620 | if (unlikely(++i == tx_ring->count)) i = 0; |
2621 | tx_ring->next_to_use = i; | |
1da177e4 LT |
2622 | |
2623 | return TRUE; | |
2624 | } | |
2625 | ||
2626 | return FALSE; | |
2627 | } | |
2628 | ||
2629 | #define E1000_MAX_TXD_PWR 12 | |
2630 | #define E1000_MAX_DATA_PER_TXD (1<<E1000_MAX_TXD_PWR) | |
2631 | ||
2632 | static inline int | |
581d708e MC |
2633 | e1000_tx_map(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2634 | struct sk_buff *skb, unsigned int first, unsigned int max_per_txd, | |
2635 | unsigned int nr_frags, unsigned int mss) | |
1da177e4 | 2636 | { |
1da177e4 LT |
2637 | struct e1000_buffer *buffer_info; |
2638 | unsigned int len = skb->len; | |
2639 | unsigned int offset = 0, size, count = 0, i; | |
2640 | unsigned int f; | |
2641 | len -= skb->data_len; | |
2642 | ||
2643 | i = tx_ring->next_to_use; | |
2644 | ||
96838a40 | 2645 | while (len) { |
1da177e4 LT |
2646 | buffer_info = &tx_ring->buffer_info[i]; |
2647 | size = min(len, max_per_txd); | |
2648 | #ifdef NETIF_F_TSO | |
fd803241 JK |
2649 | /* Workaround for Controller erratum -- |
2650 | * descriptor for non-tso packet in a linear SKB that follows a | |
2651 | * tso gets written back prematurely before the data is fully | |
2652 | * DMAd to the controller */ | |
2653 | if (!skb->data_len && tx_ring->last_tx_tso && | |
2654 | !skb_shinfo(skb)->tso_size) { | |
2655 | tx_ring->last_tx_tso = 0; | |
2656 | size -= 4; | |
2657 | } | |
2658 | ||
1da177e4 LT |
2659 | /* Workaround for premature desc write-backs |
2660 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 2661 | if (unlikely(mss && !nr_frags && size == len && size > 8)) |
1da177e4 LT |
2662 | size -= 4; |
2663 | #endif | |
97338bde MC |
2664 | /* work-around for errata 10 and it applies |
2665 | * to all controllers in PCI-X mode | |
2666 | * The fix is to make sure that the first descriptor of a | |
2667 | * packet is smaller than 2048 - 16 - 16 (or 2016) bytes | |
2668 | */ | |
96838a40 | 2669 | if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && |
97338bde MC |
2670 | (size > 2015) && count == 0)) |
2671 | size = 2015; | |
96838a40 | 2672 | |
1da177e4 LT |
2673 | /* Workaround for potential 82544 hang in PCI-X. Avoid |
2674 | * terminating buffers within evenly-aligned dwords. */ | |
96838a40 | 2675 | if (unlikely(adapter->pcix_82544 && |
1da177e4 LT |
2676 | !((unsigned long)(skb->data + offset + size - 1) & 4) && |
2677 | size > 4)) | |
2678 | size -= 4; | |
2679 | ||
2680 | buffer_info->length = size; | |
2681 | buffer_info->dma = | |
2682 | pci_map_single(adapter->pdev, | |
2683 | skb->data + offset, | |
2684 | size, | |
2685 | PCI_DMA_TODEVICE); | |
2686 | buffer_info->time_stamp = jiffies; | |
2687 | ||
2688 | len -= size; | |
2689 | offset += size; | |
2690 | count++; | |
96838a40 | 2691 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
2692 | } |
2693 | ||
96838a40 | 2694 | for (f = 0; f < nr_frags; f++) { |
1da177e4 LT |
2695 | struct skb_frag_struct *frag; |
2696 | ||
2697 | frag = &skb_shinfo(skb)->frags[f]; | |
2698 | len = frag->size; | |
2699 | offset = frag->page_offset; | |
2700 | ||
96838a40 | 2701 | while (len) { |
1da177e4 LT |
2702 | buffer_info = &tx_ring->buffer_info[i]; |
2703 | size = min(len, max_per_txd); | |
2704 | #ifdef NETIF_F_TSO | |
2705 | /* Workaround for premature desc write-backs | |
2706 | * in TSO mode. Append 4-byte sentinel desc */ | |
96838a40 | 2707 | if (unlikely(mss && f == (nr_frags-1) && size == len && size > 8)) |
1da177e4 LT |
2708 | size -= 4; |
2709 | #endif | |
2710 | /* Workaround for potential 82544 hang in PCI-X. | |
2711 | * Avoid terminating buffers within evenly-aligned | |
2712 | * dwords. */ | |
96838a40 | 2713 | if (unlikely(adapter->pcix_82544 && |
1da177e4 LT |
2714 | !((unsigned long)(frag->page+offset+size-1) & 4) && |
2715 | size > 4)) | |
2716 | size -= 4; | |
2717 | ||
2718 | buffer_info->length = size; | |
2719 | buffer_info->dma = | |
2720 | pci_map_page(adapter->pdev, | |
2721 | frag->page, | |
2722 | offset, | |
2723 | size, | |
2724 | PCI_DMA_TODEVICE); | |
2725 | buffer_info->time_stamp = jiffies; | |
2726 | ||
2727 | len -= size; | |
2728 | offset += size; | |
2729 | count++; | |
96838a40 | 2730 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
2731 | } |
2732 | } | |
2733 | ||
2734 | i = (i == 0) ? tx_ring->count - 1 : i - 1; | |
2735 | tx_ring->buffer_info[i].skb = skb; | |
2736 | tx_ring->buffer_info[first].next_to_watch = i; | |
2737 | ||
2738 | return count; | |
2739 | } | |
2740 | ||
2741 | static inline void | |
581d708e MC |
2742 | e1000_tx_queue(struct e1000_adapter *adapter, struct e1000_tx_ring *tx_ring, |
2743 | int tx_flags, int count) | |
1da177e4 | 2744 | { |
1da177e4 LT |
2745 | struct e1000_tx_desc *tx_desc = NULL; |
2746 | struct e1000_buffer *buffer_info; | |
2747 | uint32_t txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; | |
2748 | unsigned int i; | |
2749 | ||
96838a40 | 2750 | if (likely(tx_flags & E1000_TX_FLAGS_TSO)) { |
1da177e4 LT |
2751 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | |
2752 | E1000_TXD_CMD_TSE; | |
2d7edb92 MC |
2753 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; |
2754 | ||
96838a40 | 2755 | if (likely(tx_flags & E1000_TX_FLAGS_IPV4)) |
2d7edb92 | 2756 | txd_upper |= E1000_TXD_POPTS_IXSM << 8; |
1da177e4 LT |
2757 | } |
2758 | ||
96838a40 | 2759 | if (likely(tx_flags & E1000_TX_FLAGS_CSUM)) { |
1da177e4 LT |
2760 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; |
2761 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
2762 | } | |
2763 | ||
96838a40 | 2764 | if (unlikely(tx_flags & E1000_TX_FLAGS_VLAN)) { |
1da177e4 LT |
2765 | txd_lower |= E1000_TXD_CMD_VLE; |
2766 | txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); | |
2767 | } | |
2768 | ||
2769 | i = tx_ring->next_to_use; | |
2770 | ||
96838a40 | 2771 | while (count--) { |
1da177e4 LT |
2772 | buffer_info = &tx_ring->buffer_info[i]; |
2773 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
2774 | tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
2775 | tx_desc->lower.data = | |
2776 | cpu_to_le32(txd_lower | buffer_info->length); | |
2777 | tx_desc->upper.data = cpu_to_le32(txd_upper); | |
96838a40 | 2778 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 LT |
2779 | } |
2780 | ||
2781 | tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); | |
2782 | ||
2783 | /* Force memory writes to complete before letting h/w | |
2784 | * know there are new descriptors to fetch. (Only | |
2785 | * applicable for weak-ordered memory model archs, | |
2786 | * such as IA-64). */ | |
2787 | wmb(); | |
2788 | ||
2789 | tx_ring->next_to_use = i; | |
581d708e | 2790 | writel(i, adapter->hw.hw_addr + tx_ring->tdt); |
1da177e4 LT |
2791 | } |
2792 | ||
2793 | /** | |
2794 | * 82547 workaround to avoid controller hang in half-duplex environment. | |
2795 | * The workaround is to avoid queuing a large packet that would span | |
2796 | * the internal Tx FIFO ring boundary by notifying the stack to resend | |
2797 | * the packet at a later time. This gives the Tx FIFO an opportunity to | |
2798 | * flush all packets. When that occurs, we reset the Tx FIFO pointers | |
2799 | * to the beginning of the Tx FIFO. | |
2800 | **/ | |
2801 | ||
2802 | #define E1000_FIFO_HDR 0x10 | |
2803 | #define E1000_82547_PAD_LEN 0x3E0 | |
2804 | ||
2805 | static inline int | |
2806 | e1000_82547_fifo_workaround(struct e1000_adapter *adapter, struct sk_buff *skb) | |
2807 | { | |
2808 | uint32_t fifo_space = adapter->tx_fifo_size - adapter->tx_fifo_head; | |
2809 | uint32_t skb_fifo_len = skb->len + E1000_FIFO_HDR; | |
2810 | ||
2811 | E1000_ROUNDUP(skb_fifo_len, E1000_FIFO_HDR); | |
2812 | ||
96838a40 | 2813 | if (adapter->link_duplex != HALF_DUPLEX) |
1da177e4 LT |
2814 | goto no_fifo_stall_required; |
2815 | ||
96838a40 | 2816 | if (atomic_read(&adapter->tx_fifo_stall)) |
1da177e4 LT |
2817 | return 1; |
2818 | ||
96838a40 | 2819 | if (skb_fifo_len >= (E1000_82547_PAD_LEN + fifo_space)) { |
1da177e4 LT |
2820 | atomic_set(&adapter->tx_fifo_stall, 1); |
2821 | return 1; | |
2822 | } | |
2823 | ||
2824 | no_fifo_stall_required: | |
2825 | adapter->tx_fifo_head += skb_fifo_len; | |
96838a40 | 2826 | if (adapter->tx_fifo_head >= adapter->tx_fifo_size) |
1da177e4 LT |
2827 | adapter->tx_fifo_head -= adapter->tx_fifo_size; |
2828 | return 0; | |
2829 | } | |
2830 | ||
2d7edb92 MC |
2831 | #define MINIMUM_DHCP_PACKET_SIZE 282 |
2832 | static inline int | |
2833 | e1000_transfer_dhcp_info(struct e1000_adapter *adapter, struct sk_buff *skb) | |
2834 | { | |
2835 | struct e1000_hw *hw = &adapter->hw; | |
2836 | uint16_t length, offset; | |
96838a40 JB |
2837 | if (vlan_tx_tag_present(skb)) { |
2838 | if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) && | |
2d7edb92 MC |
2839 | ( adapter->hw.mng_cookie.status & |
2840 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT)) ) | |
2841 | return 0; | |
2842 | } | |
96838a40 | 2843 | if ((skb->len > MINIMUM_DHCP_PACKET_SIZE) && (!skb->protocol)) { |
2d7edb92 | 2844 | struct ethhdr *eth = (struct ethhdr *) skb->data; |
96838a40 JB |
2845 | if ((htons(ETH_P_IP) == eth->h_proto)) { |
2846 | const struct iphdr *ip = | |
2d7edb92 | 2847 | (struct iphdr *)((uint8_t *)skb->data+14); |
96838a40 JB |
2848 | if (IPPROTO_UDP == ip->protocol) { |
2849 | struct udphdr *udp = | |
2850 | (struct udphdr *)((uint8_t *)ip + | |
2d7edb92 | 2851 | (ip->ihl << 2)); |
96838a40 | 2852 | if (ntohs(udp->dest) == 67) { |
2d7edb92 MC |
2853 | offset = (uint8_t *)udp + 8 - skb->data; |
2854 | length = skb->len - offset; | |
2855 | ||
2856 | return e1000_mng_write_dhcp_info(hw, | |
96838a40 | 2857 | (uint8_t *)udp + 8, |
2d7edb92 MC |
2858 | length); |
2859 | } | |
2860 | } | |
2861 | } | |
2862 | } | |
2863 | return 0; | |
2864 | } | |
2865 | ||
1da177e4 LT |
2866 | #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) |
2867 | static int | |
2868 | e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) | |
2869 | { | |
60490fe0 | 2870 | struct e1000_adapter *adapter = netdev_priv(netdev); |
581d708e | 2871 | struct e1000_tx_ring *tx_ring; |
1da177e4 LT |
2872 | unsigned int first, max_per_txd = E1000_MAX_DATA_PER_TXD; |
2873 | unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; | |
2874 | unsigned int tx_flags = 0; | |
2875 | unsigned int len = skb->len; | |
2876 | unsigned long flags; | |
2877 | unsigned int nr_frags = 0; | |
2878 | unsigned int mss = 0; | |
2879 | int count = 0; | |
96838a40 | 2880 | int tso; |
1da177e4 LT |
2881 | unsigned int f; |
2882 | len -= skb->data_len; | |
2883 | ||
24025e4e MC |
2884 | #ifdef CONFIG_E1000_MQ |
2885 | tx_ring = *per_cpu_ptr(adapter->cpu_tx_ring, smp_processor_id()); | |
2886 | #else | |
581d708e | 2887 | tx_ring = adapter->tx_ring; |
24025e4e MC |
2888 | #endif |
2889 | ||
581d708e | 2890 | if (unlikely(skb->len <= 0)) { |
1da177e4 LT |
2891 | dev_kfree_skb_any(skb); |
2892 | return NETDEV_TX_OK; | |
2893 | } | |
2894 | ||
2895 | #ifdef NETIF_F_TSO | |
2896 | mss = skb_shinfo(skb)->tso_size; | |
2648345f | 2897 | /* The controller does a simple calculation to |
1da177e4 LT |
2898 | * make sure there is enough room in the FIFO before |
2899 | * initiating the DMA for each buffer. The calc is: | |
2900 | * 4 = ceil(buffer len/mss). To make sure we don't | |
2901 | * overrun the FIFO, adjust the max buffer len if mss | |
2902 | * drops. */ | |
96838a40 | 2903 | if (mss) { |
9a3056da | 2904 | uint8_t hdr_len; |
1da177e4 LT |
2905 | max_per_txd = min(mss << 2, max_per_txd); |
2906 | max_txd_pwr = fls(max_per_txd) - 1; | |
9a3056da JK |
2907 | |
2908 | /* TSO Workaround for 82571/2 Controllers -- if skb->data | |
2909 | * points to just header, pull a few bytes of payload from | |
2910 | * frags into skb->data */ | |
2911 | hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2)); | |
2912 | if (skb->data_len && (hdr_len == (skb->len - skb->data_len)) && | |
2913 | (adapter->hw.mac_type == e1000_82571 || | |
2914 | adapter->hw.mac_type == e1000_82572)) { | |
d74bbd3b JK |
2915 | unsigned int pull_size; |
2916 | pull_size = min((unsigned int)4, skb->data_len); | |
2917 | if (!__pskb_pull_tail(skb, pull_size)) { | |
2918 | printk(KERN_ERR "__pskb_pull_tail failed.\n"); | |
2919 | dev_kfree_skb_any(skb); | |
9e927fb6 | 2920 | return NETDEV_TX_OK; |
d74bbd3b | 2921 | } |
9a3056da JK |
2922 | len = skb->len - skb->data_len; |
2923 | } | |
1da177e4 LT |
2924 | } |
2925 | ||
9a3056da | 2926 | /* reserve a descriptor for the offload context */ |
96838a40 | 2927 | if ((mss) || (skb->ip_summed == CHECKSUM_HW)) |
1da177e4 | 2928 | count++; |
2648345f | 2929 | count++; |
1da177e4 | 2930 | #else |
96838a40 | 2931 | if (skb->ip_summed == CHECKSUM_HW) |
1da177e4 LT |
2932 | count++; |
2933 | #endif | |
fd803241 JK |
2934 | |
2935 | #ifdef NETIF_F_TSO | |
2936 | /* Controller Erratum workaround */ | |
2937 | if (!skb->data_len && tx_ring->last_tx_tso && | |
2938 | !skb_shinfo(skb)->tso_size) | |
2939 | count++; | |
2940 | #endif | |
2941 | ||
1da177e4 LT |
2942 | count += TXD_USE_COUNT(len, max_txd_pwr); |
2943 | ||
96838a40 | 2944 | if (adapter->pcix_82544) |
1da177e4 LT |
2945 | count++; |
2946 | ||
96838a40 | 2947 | /* work-around for errata 10 and it applies to all controllers |
97338bde MC |
2948 | * in PCI-X mode, so add one more descriptor to the count |
2949 | */ | |
96838a40 | 2950 | if (unlikely((adapter->hw.bus_type == e1000_bus_type_pcix) && |
97338bde MC |
2951 | (len > 2015))) |
2952 | count++; | |
2953 | ||
1da177e4 | 2954 | nr_frags = skb_shinfo(skb)->nr_frags; |
96838a40 | 2955 | for (f = 0; f < nr_frags; f++) |
1da177e4 LT |
2956 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, |
2957 | max_txd_pwr); | |
96838a40 | 2958 | if (adapter->pcix_82544) |
1da177e4 LT |
2959 | count += nr_frags; |
2960 | ||
96838a40 | 2961 | if (adapter->hw.tx_pkt_filtering && (adapter->hw.mac_type == e1000_82573) ) |
2d7edb92 MC |
2962 | e1000_transfer_dhcp_info(adapter, skb); |
2963 | ||
581d708e MC |
2964 | local_irq_save(flags); |
2965 | if (!spin_trylock(&tx_ring->tx_lock)) { | |
2966 | /* Collision - tell upper layer to requeue */ | |
2967 | local_irq_restore(flags); | |
2968 | return NETDEV_TX_LOCKED; | |
2969 | } | |
1da177e4 LT |
2970 | |
2971 | /* need: count + 2 desc gap to keep tail from touching | |
2972 | * head, otherwise try next time */ | |
581d708e | 2973 | if (unlikely(E1000_DESC_UNUSED(tx_ring) < count + 2)) { |
1da177e4 | 2974 | netif_stop_queue(netdev); |
581d708e | 2975 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
2976 | return NETDEV_TX_BUSY; |
2977 | } | |
2978 | ||
96838a40 JB |
2979 | if (unlikely(adapter->hw.mac_type == e1000_82547)) { |
2980 | if (unlikely(e1000_82547_fifo_workaround(adapter, skb))) { | |
1da177e4 LT |
2981 | netif_stop_queue(netdev); |
2982 | mod_timer(&adapter->tx_fifo_stall_timer, jiffies); | |
581d708e | 2983 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
2984 | return NETDEV_TX_BUSY; |
2985 | } | |
2986 | } | |
2987 | ||
96838a40 | 2988 | if (unlikely(adapter->vlgrp && vlan_tx_tag_present(skb))) { |
1da177e4 LT |
2989 | tx_flags |= E1000_TX_FLAGS_VLAN; |
2990 | tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); | |
2991 | } | |
2992 | ||
581d708e | 2993 | first = tx_ring->next_to_use; |
96838a40 | 2994 | |
581d708e | 2995 | tso = e1000_tso(adapter, tx_ring, skb); |
1da177e4 LT |
2996 | if (tso < 0) { |
2997 | dev_kfree_skb_any(skb); | |
581d708e | 2998 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
2999 | return NETDEV_TX_OK; |
3000 | } | |
3001 | ||
fd803241 JK |
3002 | if (likely(tso)) { |
3003 | tx_ring->last_tx_tso = 1; | |
1da177e4 | 3004 | tx_flags |= E1000_TX_FLAGS_TSO; |
fd803241 | 3005 | } else if (likely(e1000_tx_csum(adapter, tx_ring, skb))) |
1da177e4 LT |
3006 | tx_flags |= E1000_TX_FLAGS_CSUM; |
3007 | ||
2d7edb92 | 3008 | /* Old method was to assume IPv4 packet by default if TSO was enabled. |
868d5309 | 3009 | * 82571 hardware supports TSO capabilities for IPv6 as well... |
2d7edb92 | 3010 | * no longer assume, we must. */ |
581d708e | 3011 | if (likely(skb->protocol == ntohs(ETH_P_IP))) |
2d7edb92 MC |
3012 | tx_flags |= E1000_TX_FLAGS_IPV4; |
3013 | ||
581d708e MC |
3014 | e1000_tx_queue(adapter, tx_ring, tx_flags, |
3015 | e1000_tx_map(adapter, tx_ring, skb, first, | |
3016 | max_per_txd, nr_frags, mss)); | |
1da177e4 LT |
3017 | |
3018 | netdev->trans_start = jiffies; | |
3019 | ||
3020 | /* Make sure there is space in the ring for the next send. */ | |
581d708e | 3021 | if (unlikely(E1000_DESC_UNUSED(tx_ring) < MAX_SKB_FRAGS + 2)) |
1da177e4 LT |
3022 | netif_stop_queue(netdev); |
3023 | ||
581d708e | 3024 | spin_unlock_irqrestore(&tx_ring->tx_lock, flags); |
1da177e4 LT |
3025 | return NETDEV_TX_OK; |
3026 | } | |
3027 | ||
3028 | /** | |
3029 | * e1000_tx_timeout - Respond to a Tx Hang | |
3030 | * @netdev: network interface device structure | |
3031 | **/ | |
3032 | ||
3033 | static void | |
3034 | e1000_tx_timeout(struct net_device *netdev) | |
3035 | { | |
60490fe0 | 3036 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
3037 | |
3038 | /* Do the reset outside of interrupt context */ | |
3039 | schedule_work(&adapter->tx_timeout_task); | |
3040 | } | |
3041 | ||
3042 | static void | |
3043 | e1000_tx_timeout_task(struct net_device *netdev) | |
3044 | { | |
60490fe0 | 3045 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3046 | |
6b7660cd | 3047 | adapter->tx_timeout_count++; |
1da177e4 LT |
3048 | e1000_down(adapter); |
3049 | e1000_up(adapter); | |
3050 | } | |
3051 | ||
3052 | /** | |
3053 | * e1000_get_stats - Get System Network Statistics | |
3054 | * @netdev: network interface device structure | |
3055 | * | |
3056 | * Returns the address of the device statistics structure. | |
3057 | * The statistics are actually updated from the timer callback. | |
3058 | **/ | |
3059 | ||
3060 | static struct net_device_stats * | |
3061 | e1000_get_stats(struct net_device *netdev) | |
3062 | { | |
60490fe0 | 3063 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 3064 | |
6b7660cd | 3065 | /* only return the current stats */ |
1da177e4 LT |
3066 | return &adapter->net_stats; |
3067 | } | |
3068 | ||
3069 | /** | |
3070 | * e1000_change_mtu - Change the Maximum Transfer Unit | |
3071 | * @netdev: network interface device structure | |
3072 | * @new_mtu: new value for maximum frame size | |
3073 | * | |
3074 | * Returns 0 on success, negative on failure | |
3075 | **/ | |
3076 | ||
3077 | static int | |
3078 | e1000_change_mtu(struct net_device *netdev, int new_mtu) | |
3079 | { | |
60490fe0 | 3080 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
3081 | int max_frame = new_mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE; |
3082 | ||
96838a40 JB |
3083 | if ((max_frame < MINIMUM_ETHERNET_FRAME_SIZE) || |
3084 | (max_frame > MAX_JUMBO_FRAME_SIZE)) { | |
3085 | DPRINTK(PROBE, ERR, "Invalid MTU setting\n"); | |
1da177e4 | 3086 | return -EINVAL; |
2d7edb92 | 3087 | } |
1da177e4 | 3088 | |
997f5cbd JK |
3089 | /* Adapter-specific max frame size limits. */ |
3090 | switch (adapter->hw.mac_type) { | |
3091 | case e1000_82542_rev2_0: | |
3092 | case e1000_82542_rev2_1: | |
3093 | case e1000_82573: | |
3094 | if (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE) { | |
3095 | DPRINTK(PROBE, ERR, "Jumbo Frames not supported.\n"); | |
2d7edb92 | 3096 | return -EINVAL; |
2d7edb92 | 3097 | } |
997f5cbd JK |
3098 | break; |
3099 | case e1000_82571: | |
3100 | case e1000_82572: | |
3101 | #define MAX_STD_JUMBO_FRAME_SIZE 9234 | |
3102 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { | |
3103 | DPRINTK(PROBE, ERR, "MTU > 9216 not supported.\n"); | |
3104 | return -EINVAL; | |
3105 | } | |
3106 | break; | |
3107 | default: | |
3108 | /* Capable of supporting up to MAX_JUMBO_FRAME_SIZE limit. */ | |
3109 | break; | |
1da177e4 LT |
3110 | } |
3111 | ||
997f5cbd | 3112 | |
997f5cbd | 3113 | if (adapter->hw.mac_type > e1000_82547_rev_2) { |
a1415ee6 | 3114 | adapter->rx_buffer_len = max_frame; |
997f5cbd | 3115 | E1000_ROUNDUP(adapter->rx_buffer_len, 1024); |
a1415ee6 JK |
3116 | } else { |
3117 | if(unlikely((adapter->hw.mac_type < e1000_82543) && | |
3118 | (max_frame > MAXIMUM_ETHERNET_FRAME_SIZE))) { | |
3119 | DPRINTK(PROBE, ERR, "Jumbo Frames not supported " | |
3120 | "on 82542\n"); | |
3121 | return -EINVAL; | |
3122 | } else { | |
3123 | if(max_frame <= E1000_RXBUFFER_2048) | |
3124 | adapter->rx_buffer_len = E1000_RXBUFFER_2048; | |
3125 | else if(max_frame <= E1000_RXBUFFER_4096) | |
3126 | adapter->rx_buffer_len = E1000_RXBUFFER_4096; | |
3127 | else if(max_frame <= E1000_RXBUFFER_8192) | |
3128 | adapter->rx_buffer_len = E1000_RXBUFFER_8192; | |
3129 | else if(max_frame <= E1000_RXBUFFER_16384) | |
3130 | adapter->rx_buffer_len = E1000_RXBUFFER_16384; | |
3131 | } | |
3132 | } | |
997f5cbd | 3133 | |
2d7edb92 MC |
3134 | netdev->mtu = new_mtu; |
3135 | ||
96838a40 | 3136 | if (netif_running(netdev)) { |
1da177e4 LT |
3137 | e1000_down(adapter); |
3138 | e1000_up(adapter); | |
3139 | } | |
3140 | ||
1da177e4 LT |
3141 | adapter->hw.max_frame_size = max_frame; |
3142 | ||
3143 | return 0; | |
3144 | } | |
3145 | ||
3146 | /** | |
3147 | * e1000_update_stats - Update the board statistics counters | |
3148 | * @adapter: board private structure | |
3149 | **/ | |
3150 | ||
3151 | void | |
3152 | e1000_update_stats(struct e1000_adapter *adapter) | |
3153 | { | |
3154 | struct e1000_hw *hw = &adapter->hw; | |
3155 | unsigned long flags; | |
3156 | uint16_t phy_tmp; | |
3157 | ||
3158 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF | |
3159 | ||
3160 | spin_lock_irqsave(&adapter->stats_lock, flags); | |
3161 | ||
3162 | /* these counters are modified from e1000_adjust_tbi_stats, | |
3163 | * called from the interrupt context, so they must only | |
3164 | * be written while holding adapter->stats_lock | |
3165 | */ | |
3166 | ||
3167 | adapter->stats.crcerrs += E1000_READ_REG(hw, CRCERRS); | |
3168 | adapter->stats.gprc += E1000_READ_REG(hw, GPRC); | |
3169 | adapter->stats.gorcl += E1000_READ_REG(hw, GORCL); | |
3170 | adapter->stats.gorch += E1000_READ_REG(hw, GORCH); | |
3171 | adapter->stats.bprc += E1000_READ_REG(hw, BPRC); | |
3172 | adapter->stats.mprc += E1000_READ_REG(hw, MPRC); | |
3173 | adapter->stats.roc += E1000_READ_REG(hw, ROC); | |
3174 | adapter->stats.prc64 += E1000_READ_REG(hw, PRC64); | |
3175 | adapter->stats.prc127 += E1000_READ_REG(hw, PRC127); | |
3176 | adapter->stats.prc255 += E1000_READ_REG(hw, PRC255); | |
3177 | adapter->stats.prc511 += E1000_READ_REG(hw, PRC511); | |
3178 | adapter->stats.prc1023 += E1000_READ_REG(hw, PRC1023); | |
3179 | adapter->stats.prc1522 += E1000_READ_REG(hw, PRC1522); | |
3180 | ||
3181 | adapter->stats.symerrs += E1000_READ_REG(hw, SYMERRS); | |
3182 | adapter->stats.mpc += E1000_READ_REG(hw, MPC); | |
3183 | adapter->stats.scc += E1000_READ_REG(hw, SCC); | |
3184 | adapter->stats.ecol += E1000_READ_REG(hw, ECOL); | |
3185 | adapter->stats.mcc += E1000_READ_REG(hw, MCC); | |
3186 | adapter->stats.latecol += E1000_READ_REG(hw, LATECOL); | |
3187 | adapter->stats.dc += E1000_READ_REG(hw, DC); | |
3188 | adapter->stats.sec += E1000_READ_REG(hw, SEC); | |
3189 | adapter->stats.rlec += E1000_READ_REG(hw, RLEC); | |
3190 | adapter->stats.xonrxc += E1000_READ_REG(hw, XONRXC); | |
3191 | adapter->stats.xontxc += E1000_READ_REG(hw, XONTXC); | |
3192 | adapter->stats.xoffrxc += E1000_READ_REG(hw, XOFFRXC); | |
3193 | adapter->stats.xofftxc += E1000_READ_REG(hw, XOFFTXC); | |
3194 | adapter->stats.fcruc += E1000_READ_REG(hw, FCRUC); | |
3195 | adapter->stats.gptc += E1000_READ_REG(hw, GPTC); | |
3196 | adapter->stats.gotcl += E1000_READ_REG(hw, GOTCL); | |
3197 | adapter->stats.gotch += E1000_READ_REG(hw, GOTCH); | |
3198 | adapter->stats.rnbc += E1000_READ_REG(hw, RNBC); | |
3199 | adapter->stats.ruc += E1000_READ_REG(hw, RUC); | |
3200 | adapter->stats.rfc += E1000_READ_REG(hw, RFC); | |
3201 | adapter->stats.rjc += E1000_READ_REG(hw, RJC); | |
3202 | adapter->stats.torl += E1000_READ_REG(hw, TORL); | |
3203 | adapter->stats.torh += E1000_READ_REG(hw, TORH); | |
3204 | adapter->stats.totl += E1000_READ_REG(hw, TOTL); | |
3205 | adapter->stats.toth += E1000_READ_REG(hw, TOTH); | |
3206 | adapter->stats.tpr += E1000_READ_REG(hw, TPR); | |
3207 | adapter->stats.ptc64 += E1000_READ_REG(hw, PTC64); | |
3208 | adapter->stats.ptc127 += E1000_READ_REG(hw, PTC127); | |
3209 | adapter->stats.ptc255 += E1000_READ_REG(hw, PTC255); | |
3210 | adapter->stats.ptc511 += E1000_READ_REG(hw, PTC511); | |
3211 | adapter->stats.ptc1023 += E1000_READ_REG(hw, PTC1023); | |
3212 | adapter->stats.ptc1522 += E1000_READ_REG(hw, PTC1522); | |
3213 | adapter->stats.mptc += E1000_READ_REG(hw, MPTC); | |
3214 | adapter->stats.bptc += E1000_READ_REG(hw, BPTC); | |
3215 | ||
3216 | /* used for adaptive IFS */ | |
3217 | ||
3218 | hw->tx_packet_delta = E1000_READ_REG(hw, TPT); | |
3219 | adapter->stats.tpt += hw->tx_packet_delta; | |
3220 | hw->collision_delta = E1000_READ_REG(hw, COLC); | |
3221 | adapter->stats.colc += hw->collision_delta; | |
3222 | ||
96838a40 | 3223 | if (hw->mac_type >= e1000_82543) { |
1da177e4 LT |
3224 | adapter->stats.algnerrc += E1000_READ_REG(hw, ALGNERRC); |
3225 | adapter->stats.rxerrc += E1000_READ_REG(hw, RXERRC); | |
3226 | adapter->stats.tncrs += E1000_READ_REG(hw, TNCRS); | |
3227 | adapter->stats.cexterr += E1000_READ_REG(hw, CEXTERR); | |
3228 | adapter->stats.tsctc += E1000_READ_REG(hw, TSCTC); | |
3229 | adapter->stats.tsctfc += E1000_READ_REG(hw, TSCTFC); | |
3230 | } | |
96838a40 | 3231 | if (hw->mac_type > e1000_82547_rev_2) { |
2d7edb92 MC |
3232 | adapter->stats.iac += E1000_READ_REG(hw, IAC); |
3233 | adapter->stats.icrxoc += E1000_READ_REG(hw, ICRXOC); | |
3234 | adapter->stats.icrxptc += E1000_READ_REG(hw, ICRXPTC); | |
3235 | adapter->stats.icrxatc += E1000_READ_REG(hw, ICRXATC); | |
3236 | adapter->stats.ictxptc += E1000_READ_REG(hw, ICTXPTC); | |
3237 | adapter->stats.ictxatc += E1000_READ_REG(hw, ICTXATC); | |
3238 | adapter->stats.ictxqec += E1000_READ_REG(hw, ICTXQEC); | |
3239 | adapter->stats.ictxqmtc += E1000_READ_REG(hw, ICTXQMTC); | |
3240 | adapter->stats.icrxdmtc += E1000_READ_REG(hw, ICRXDMTC); | |
3241 | } | |
1da177e4 LT |
3242 | |
3243 | /* Fill out the OS statistics structure */ | |
3244 | ||
3245 | adapter->net_stats.rx_packets = adapter->stats.gprc; | |
3246 | adapter->net_stats.tx_packets = adapter->stats.gptc; | |
3247 | adapter->net_stats.rx_bytes = adapter->stats.gorcl; | |
3248 | adapter->net_stats.tx_bytes = adapter->stats.gotcl; | |
3249 | adapter->net_stats.multicast = adapter->stats.mprc; | |
3250 | adapter->net_stats.collisions = adapter->stats.colc; | |
3251 | ||
3252 | /* Rx Errors */ | |
3253 | ||
3254 | adapter->net_stats.rx_errors = adapter->stats.rxerrc + | |
3255 | adapter->stats.crcerrs + adapter->stats.algnerrc + | |
6b7660cd JK |
3256 | adapter->stats.rlec + adapter->stats.cexterr; |
3257 | adapter->net_stats.rx_dropped = 0; | |
1da177e4 LT |
3258 | adapter->net_stats.rx_length_errors = adapter->stats.rlec; |
3259 | adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; | |
3260 | adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; | |
1da177e4 LT |
3261 | adapter->net_stats.rx_missed_errors = adapter->stats.mpc; |
3262 | ||
3263 | /* Tx Errors */ | |
3264 | ||
3265 | adapter->net_stats.tx_errors = adapter->stats.ecol + | |
3266 | adapter->stats.latecol; | |
3267 | adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; | |
3268 | adapter->net_stats.tx_window_errors = adapter->stats.latecol; | |
3269 | adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; | |
3270 | ||
3271 | /* Tx Dropped needs to be maintained elsewhere */ | |
3272 | ||
3273 | /* Phy Stats */ | |
3274 | ||
96838a40 JB |
3275 | if (hw->media_type == e1000_media_type_copper) { |
3276 | if ((adapter->link_speed == SPEED_1000) && | |
1da177e4 LT |
3277 | (!e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
3278 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; | |
3279 | adapter->phy_stats.idle_errors += phy_tmp; | |
3280 | } | |
3281 | ||
96838a40 | 3282 | if ((hw->mac_type <= e1000_82546) && |
1da177e4 LT |
3283 | (hw->phy_type == e1000_phy_m88) && |
3284 | !e1000_read_phy_reg(hw, M88E1000_RX_ERR_CNTR, &phy_tmp)) | |
3285 | adapter->phy_stats.receive_errors += phy_tmp; | |
3286 | } | |
3287 | ||
3288 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
3289 | } | |
3290 | ||
24025e4e MC |
3291 | #ifdef CONFIG_E1000_MQ |
3292 | void | |
3293 | e1000_rx_schedule(void *data) | |
3294 | { | |
3295 | struct net_device *poll_dev, *netdev = data; | |
3296 | struct e1000_adapter *adapter = netdev->priv; | |
3297 | int this_cpu = get_cpu(); | |
3298 | ||
3299 | poll_dev = *per_cpu_ptr(adapter->cpu_netdev, this_cpu); | |
3300 | if (poll_dev == NULL) { | |
3301 | put_cpu(); | |
3302 | return; | |
3303 | } | |
3304 | ||
3305 | if (likely(netif_rx_schedule_prep(poll_dev))) | |
3306 | __netif_rx_schedule(poll_dev); | |
3307 | else | |
3308 | e1000_irq_enable(adapter); | |
3309 | ||
3310 | put_cpu(); | |
3311 | } | |
3312 | #endif | |
3313 | ||
1da177e4 LT |
3314 | /** |
3315 | * e1000_intr - Interrupt Handler | |
3316 | * @irq: interrupt number | |
3317 | * @data: pointer to a network interface device structure | |
3318 | * @pt_regs: CPU registers structure | |
3319 | **/ | |
3320 | ||
3321 | static irqreturn_t | |
3322 | e1000_intr(int irq, void *data, struct pt_regs *regs) | |
3323 | { | |
3324 | struct net_device *netdev = data; | |
60490fe0 | 3325 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
3326 | struct e1000_hw *hw = &adapter->hw; |
3327 | uint32_t icr = E1000_READ_REG(hw, ICR); | |
1e613fd9 | 3328 | #ifndef CONFIG_E1000_NAPI |
581d708e | 3329 | int i; |
1e613fd9 JK |
3330 | #else |
3331 | /* Interrupt Auto-Mask...upon reading ICR, | |
3332 | * interrupts are masked. No need for the | |
3333 | * IMC write, but it does mean we should | |
3334 | * account for it ASAP. */ | |
3335 | if (likely(hw->mac_type >= e1000_82571)) | |
3336 | atomic_inc(&adapter->irq_sem); | |
be2b28ed | 3337 | #endif |
1da177e4 | 3338 | |
1e613fd9 JK |
3339 | if (unlikely(!icr)) { |
3340 | #ifdef CONFIG_E1000_NAPI | |
3341 | if (hw->mac_type >= e1000_82571) | |
3342 | e1000_irq_enable(adapter); | |
3343 | #endif | |
1da177e4 | 3344 | return IRQ_NONE; /* Not our interrupt */ |
1e613fd9 | 3345 | } |
1da177e4 | 3346 | |
96838a40 | 3347 | if (unlikely(icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC))) { |
1da177e4 LT |
3348 | hw->get_link_status = 1; |
3349 | mod_timer(&adapter->watchdog_timer, jiffies); | |
3350 | } | |
3351 | ||
3352 | #ifdef CONFIG_E1000_NAPI | |
1e613fd9 JK |
3353 | if (unlikely(hw->mac_type < e1000_82571)) { |
3354 | atomic_inc(&adapter->irq_sem); | |
3355 | E1000_WRITE_REG(hw, IMC, ~0); | |
3356 | E1000_WRITE_FLUSH(hw); | |
3357 | } | |
24025e4e MC |
3358 | #ifdef CONFIG_E1000_MQ |
3359 | if (atomic_read(&adapter->rx_sched_call_data.count) == 0) { | |
f56799ea JK |
3360 | /* We must setup the cpumask once count == 0 since |
3361 | * each cpu bit is cleared when the work is done. */ | |
3362 | adapter->rx_sched_call_data.cpumask = adapter->cpumask; | |
3363 | atomic_add(adapter->num_rx_queues - 1, &adapter->irq_sem); | |
3364 | atomic_set(&adapter->rx_sched_call_data.count, | |
3365 | adapter->num_rx_queues); | |
24025e4e MC |
3366 | smp_call_async_mask(&adapter->rx_sched_call_data); |
3367 | } else { | |
3368 | printk("call_data.count == %u\n", atomic_read(&adapter->rx_sched_call_data.count)); | |
1da177e4 | 3369 | } |
be2b28ed | 3370 | #else /* if !CONFIG_E1000_MQ */ |
581d708e MC |
3371 | if (likely(netif_rx_schedule_prep(&adapter->polling_netdev[0]))) |
3372 | __netif_rx_schedule(&adapter->polling_netdev[0]); | |
3373 | else | |
3374 | e1000_irq_enable(adapter); | |
be2b28ed JG |
3375 | #endif /* CONFIG_E1000_MQ */ |
3376 | ||
3377 | #else /* if !CONFIG_E1000_NAPI */ | |
1da177e4 | 3378 | /* Writing IMC and IMS is needed for 82547. |
96838a40 JB |
3379 | * Due to Hub Link bus being occupied, an interrupt |
3380 | * de-assertion message is not able to be sent. | |
3381 | * When an interrupt assertion message is generated later, | |
3382 | * two messages are re-ordered and sent out. | |
3383 | * That causes APIC to think 82547 is in de-assertion | |
3384 | * state, while 82547 is in assertion state, resulting | |
3385 | * in dead lock. Writing IMC forces 82547 into | |
3386 | * de-assertion state. | |
3387 | */ | |
3388 | if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) { | |
1da177e4 | 3389 | atomic_inc(&adapter->irq_sem); |
2648345f | 3390 | E1000_WRITE_REG(hw, IMC, ~0); |
1da177e4 LT |
3391 | } |
3392 | ||
96838a40 JB |
3393 | for (i = 0; i < E1000_MAX_INTR; i++) |
3394 | if (unlikely(!adapter->clean_rx(adapter, adapter->rx_ring) & | |
581d708e | 3395 | !e1000_clean_tx_irq(adapter, adapter->tx_ring))) |
1da177e4 LT |
3396 | break; |
3397 | ||
96838a40 | 3398 | if (hw->mac_type == e1000_82547 || hw->mac_type == e1000_82547_rev_2) |
1da177e4 | 3399 | e1000_irq_enable(adapter); |
581d708e | 3400 | |
be2b28ed | 3401 | #endif /* CONFIG_E1000_NAPI */ |
1da177e4 LT |
3402 | |
3403 | return IRQ_HANDLED; | |
3404 | } | |
3405 | ||
3406 | #ifdef CONFIG_E1000_NAPI | |
3407 | /** | |
3408 | * e1000_clean - NAPI Rx polling callback | |
3409 | * @adapter: board private structure | |
3410 | **/ | |
3411 | ||
3412 | static int | |
581d708e | 3413 | e1000_clean(struct net_device *poll_dev, int *budget) |
1da177e4 | 3414 | { |
581d708e MC |
3415 | struct e1000_adapter *adapter; |
3416 | int work_to_do = min(*budget, poll_dev->quota); | |
38bd3b26 | 3417 | int tx_cleaned = 0, i = 0, work_done = 0; |
581d708e MC |
3418 | |
3419 | /* Must NOT use netdev_priv macro here. */ | |
3420 | adapter = poll_dev->priv; | |
3421 | ||
3422 | /* Keep link state information with original netdev */ | |
3423 | if (!netif_carrier_ok(adapter->netdev)) | |
3424 | goto quit_polling; | |
2648345f | 3425 | |
581d708e MC |
3426 | while (poll_dev != &adapter->polling_netdev[i]) { |
3427 | i++; | |
f56799ea | 3428 | if (unlikely(i == adapter->num_rx_queues)) |
581d708e MC |
3429 | BUG(); |
3430 | } | |
3431 | ||
8241e35e JK |
3432 | if (likely(adapter->num_tx_queues == 1)) { |
3433 | /* e1000_clean is called per-cpu. This lock protects | |
3434 | * tx_ring[0] from being cleaned by multiple cpus | |
3435 | * simultaneously. A failure obtaining the lock means | |
3436 | * tx_ring[0] is currently being cleaned anyway. */ | |
3437 | if (spin_trylock(&adapter->tx_queue_lock)) { | |
3438 | tx_cleaned = e1000_clean_tx_irq(adapter, | |
3439 | &adapter->tx_ring[0]); | |
3440 | spin_unlock(&adapter->tx_queue_lock); | |
3441 | } | |
3442 | } else | |
3443 | tx_cleaned = e1000_clean_tx_irq(adapter, &adapter->tx_ring[i]); | |
3444 | ||
581d708e MC |
3445 | adapter->clean_rx(adapter, &adapter->rx_ring[i], |
3446 | &work_done, work_to_do); | |
1da177e4 LT |
3447 | |
3448 | *budget -= work_done; | |
581d708e | 3449 | poll_dev->quota -= work_done; |
96838a40 | 3450 | |
2b02893e | 3451 | /* If no Tx and not enough Rx work done, exit the polling mode */ |
96838a40 | 3452 | if ((!tx_cleaned && (work_done == 0)) || |
581d708e MC |
3453 | !netif_running(adapter->netdev)) { |
3454 | quit_polling: | |
3455 | netif_rx_complete(poll_dev); | |
1da177e4 LT |
3456 | e1000_irq_enable(adapter); |
3457 | return 0; | |
3458 | } | |
3459 | ||
3460 | return 1; | |
3461 | } | |
3462 | ||
3463 | #endif | |
3464 | /** | |
3465 | * e1000_clean_tx_irq - Reclaim resources after transmit completes | |
3466 | * @adapter: board private structure | |
3467 | **/ | |
3468 | ||
3469 | static boolean_t | |
581d708e MC |
3470 | e1000_clean_tx_irq(struct e1000_adapter *adapter, |
3471 | struct e1000_tx_ring *tx_ring) | |
1da177e4 | 3472 | { |
1da177e4 LT |
3473 | struct net_device *netdev = adapter->netdev; |
3474 | struct e1000_tx_desc *tx_desc, *eop_desc; | |
3475 | struct e1000_buffer *buffer_info; | |
3476 | unsigned int i, eop; | |
3477 | boolean_t cleaned = FALSE; | |
3478 | ||
3479 | i = tx_ring->next_to_clean; | |
3480 | eop = tx_ring->buffer_info[i].next_to_watch; | |
3481 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
3482 | ||
581d708e | 3483 | while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) { |
96838a40 | 3484 | for (cleaned = FALSE; !cleaned; ) { |
1da177e4 LT |
3485 | tx_desc = E1000_TX_DESC(*tx_ring, i); |
3486 | buffer_info = &tx_ring->buffer_info[i]; | |
3487 | cleaned = (i == eop); | |
3488 | ||
8241e35e JK |
3489 | #ifdef CONFIG_E1000_MQ |
3490 | tx_ring->tx_stats.bytes += buffer_info->length; | |
3491 | #endif | |
fd803241 | 3492 | e1000_unmap_and_free_tx_resource(adapter, buffer_info); |
8241e35e | 3493 | memset(tx_desc, 0, sizeof(struct e1000_tx_desc)); |
1da177e4 | 3494 | |
96838a40 | 3495 | if (unlikely(++i == tx_ring->count)) i = 0; |
1da177e4 | 3496 | } |
581d708e | 3497 | |
7bfa4816 JK |
3498 | #ifdef CONFIG_E1000_MQ |
3499 | tx_ring->tx_stats.packets++; | |
3500 | #endif | |
3501 | ||
1da177e4 LT |
3502 | eop = tx_ring->buffer_info[i].next_to_watch; |
3503 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
3504 | } | |
3505 | ||
3506 | tx_ring->next_to_clean = i; | |
3507 | ||
581d708e | 3508 | spin_lock(&tx_ring->tx_lock); |
1da177e4 | 3509 | |
96838a40 | 3510 | if (unlikely(cleaned && netif_queue_stopped(netdev) && |
1da177e4 LT |
3511 | netif_carrier_ok(netdev))) |
3512 | netif_wake_queue(netdev); | |
3513 | ||
581d708e | 3514 | spin_unlock(&tx_ring->tx_lock); |
2648345f | 3515 | |
581d708e | 3516 | if (adapter->detect_tx_hung) { |
2648345f | 3517 | /* Detect a transmit hang in hardware, this serializes the |
1da177e4 LT |
3518 | * check with the clearing of time_stamp and movement of i */ |
3519 | adapter->detect_tx_hung = FALSE; | |
392137fa JK |
3520 | if (tx_ring->buffer_info[eop].dma && |
3521 | time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + | |
3522 | adapter->tx_timeout_factor * HZ) | |
70b8f1e1 | 3523 | && !(E1000_READ_REG(&adapter->hw, STATUS) & |
392137fa | 3524 | E1000_STATUS_TXOFF)) { |
70b8f1e1 MC |
3525 | |
3526 | /* detected Tx unit hang */ | |
c6963ef5 | 3527 | DPRINTK(DRV, ERR, "Detected Tx Unit Hang\n" |
7bfa4816 | 3528 | " Tx Queue <%lu>\n" |
70b8f1e1 MC |
3529 | " TDH <%x>\n" |
3530 | " TDT <%x>\n" | |
3531 | " next_to_use <%x>\n" | |
3532 | " next_to_clean <%x>\n" | |
3533 | "buffer_info[next_to_clean]\n" | |
70b8f1e1 MC |
3534 | " time_stamp <%lx>\n" |
3535 | " next_to_watch <%x>\n" | |
3536 | " jiffies <%lx>\n" | |
3537 | " next_to_watch.status <%x>\n", | |
7bfa4816 JK |
3538 | (unsigned long)((tx_ring - adapter->tx_ring) / |
3539 | sizeof(struct e1000_tx_ring)), | |
581d708e MC |
3540 | readl(adapter->hw.hw_addr + tx_ring->tdh), |
3541 | readl(adapter->hw.hw_addr + tx_ring->tdt), | |
70b8f1e1 | 3542 | tx_ring->next_to_use, |
392137fa JK |
3543 | tx_ring->next_to_clean, |
3544 | tx_ring->buffer_info[eop].time_stamp, | |
70b8f1e1 MC |
3545 | eop, |
3546 | jiffies, | |
3547 | eop_desc->upper.fields.status); | |
1da177e4 | 3548 | netif_stop_queue(netdev); |
70b8f1e1 | 3549 | } |
1da177e4 | 3550 | } |
1da177e4 LT |
3551 | return cleaned; |
3552 | } | |
3553 | ||
3554 | /** | |
3555 | * e1000_rx_checksum - Receive Checksum Offload for 82543 | |
2d7edb92 MC |
3556 | * @adapter: board private structure |
3557 | * @status_err: receive descriptor status and error fields | |
3558 | * @csum: receive descriptor csum field | |
3559 | * @sk_buff: socket buffer with received data | |
1da177e4 LT |
3560 | **/ |
3561 | ||
3562 | static inline void | |
3563 | e1000_rx_checksum(struct e1000_adapter *adapter, | |
2d7edb92 MC |
3564 | uint32_t status_err, uint32_t csum, |
3565 | struct sk_buff *skb) | |
1da177e4 | 3566 | { |
2d7edb92 MC |
3567 | uint16_t status = (uint16_t)status_err; |
3568 | uint8_t errors = (uint8_t)(status_err >> 24); | |
3569 | skb->ip_summed = CHECKSUM_NONE; | |
3570 | ||
1da177e4 | 3571 | /* 82543 or newer only */ |
96838a40 | 3572 | if (unlikely(adapter->hw.mac_type < e1000_82543)) return; |
1da177e4 | 3573 | /* Ignore Checksum bit is set */ |
96838a40 | 3574 | if (unlikely(status & E1000_RXD_STAT_IXSM)) return; |
2d7edb92 | 3575 | /* TCP/UDP checksum error bit is set */ |
96838a40 | 3576 | if (unlikely(errors & E1000_RXD_ERR_TCPE)) { |
1da177e4 | 3577 | /* let the stack verify checksum errors */ |
1da177e4 | 3578 | adapter->hw_csum_err++; |
2d7edb92 MC |
3579 | return; |
3580 | } | |
3581 | /* TCP/UDP Checksum has not been calculated */ | |
96838a40 JB |
3582 | if (adapter->hw.mac_type <= e1000_82547_rev_2) { |
3583 | if (!(status & E1000_RXD_STAT_TCPCS)) | |
2d7edb92 | 3584 | return; |
1da177e4 | 3585 | } else { |
96838a40 | 3586 | if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) |
2d7edb92 MC |
3587 | return; |
3588 | } | |
3589 | /* It must be a TCP or UDP packet with a valid checksum */ | |
3590 | if (likely(status & E1000_RXD_STAT_TCPCS)) { | |
1da177e4 LT |
3591 | /* TCP checksum is good */ |
3592 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
2d7edb92 MC |
3593 | } else if (adapter->hw.mac_type > e1000_82547_rev_2) { |
3594 | /* IP fragment with UDP payload */ | |
3595 | /* Hardware complements the payload checksum, so we undo it | |
3596 | * and then put the value in host order for further stack use. | |
3597 | */ | |
3598 | csum = ntohl(csum ^ 0xFFFF); | |
3599 | skb->csum = csum; | |
3600 | skb->ip_summed = CHECKSUM_HW; | |
1da177e4 | 3601 | } |
2d7edb92 | 3602 | adapter->hw_csum_good++; |
1da177e4 LT |
3603 | } |
3604 | ||
3605 | /** | |
2d7edb92 | 3606 | * e1000_clean_rx_irq - Send received data up the network stack; legacy |
1da177e4 LT |
3607 | * @adapter: board private structure |
3608 | **/ | |
3609 | ||
3610 | static boolean_t | |
3611 | #ifdef CONFIG_E1000_NAPI | |
581d708e MC |
3612 | e1000_clean_rx_irq(struct e1000_adapter *adapter, |
3613 | struct e1000_rx_ring *rx_ring, | |
3614 | int *work_done, int work_to_do) | |
1da177e4 | 3615 | #else |
581d708e MC |
3616 | e1000_clean_rx_irq(struct e1000_adapter *adapter, |
3617 | struct e1000_rx_ring *rx_ring) | |
1da177e4 LT |
3618 | #endif |
3619 | { | |
1da177e4 LT |
3620 | struct net_device *netdev = adapter->netdev; |
3621 | struct pci_dev *pdev = adapter->pdev; | |
86c3d59f JB |
3622 | struct e1000_rx_desc *rx_desc, *next_rxd; |
3623 | struct e1000_buffer *buffer_info, *next_buffer; | |
1da177e4 LT |
3624 | unsigned long flags; |
3625 | uint32_t length; | |
3626 | uint8_t last_byte; | |
3627 | unsigned int i; | |
72d64a43 | 3628 | int cleaned_count = 0; |
a1415ee6 | 3629 | boolean_t cleaned = FALSE; |
1da177e4 LT |
3630 | |
3631 | i = rx_ring->next_to_clean; | |
3632 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
b92ff8ee | 3633 | buffer_info = &rx_ring->buffer_info[i]; |
1da177e4 | 3634 | |
b92ff8ee | 3635 | while (rx_desc->status & E1000_RXD_STAT_DD) { |
86c3d59f | 3636 | struct sk_buff *skb, *next_skb; |
a292ca6e | 3637 | u8 status; |
1da177e4 | 3638 | #ifdef CONFIG_E1000_NAPI |
96838a40 | 3639 | if (*work_done >= work_to_do) |
1da177e4 LT |
3640 | break; |
3641 | (*work_done)++; | |
3642 | #endif | |
a292ca6e | 3643 | status = rx_desc->status; |
b92ff8ee | 3644 | skb = buffer_info->skb; |
86c3d59f JB |
3645 | buffer_info->skb = NULL; |
3646 | ||
3647 | if (++i == rx_ring->count) i = 0; | |
3648 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
3649 | next_buffer = &rx_ring->buffer_info[i]; | |
3650 | next_skb = next_buffer->skb; | |
3651 | ||
72d64a43 JK |
3652 | cleaned = TRUE; |
3653 | cleaned_count++; | |
a292ca6e JK |
3654 | pci_unmap_single(pdev, |
3655 | buffer_info->dma, | |
3656 | buffer_info->length, | |
1da177e4 LT |
3657 | PCI_DMA_FROMDEVICE); |
3658 | ||
1da177e4 LT |
3659 | length = le16_to_cpu(rx_desc->length); |
3660 | ||
a1415ee6 JK |
3661 | if (unlikely(!(status & E1000_RXD_STAT_EOP))) { |
3662 | /* All receives must fit into a single buffer */ | |
3663 | E1000_DBG("%s: Receive packet consumed multiple" | |
3664 | " buffers\n", netdev->name); | |
3665 | dev_kfree_skb_irq(skb); | |
1da177e4 LT |
3666 | goto next_desc; |
3667 | } | |
3668 | ||
96838a40 | 3669 | if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { |
1da177e4 | 3670 | last_byte = *(skb->data + length - 1); |
b92ff8ee | 3671 | if (TBI_ACCEPT(&adapter->hw, status, |
1da177e4 LT |
3672 | rx_desc->errors, length, last_byte)) { |
3673 | spin_lock_irqsave(&adapter->stats_lock, flags); | |
a292ca6e JK |
3674 | e1000_tbi_adjust_stats(&adapter->hw, |
3675 | &adapter->stats, | |
1da177e4 LT |
3676 | length, skb->data); |
3677 | spin_unlock_irqrestore(&adapter->stats_lock, | |
3678 | flags); | |
3679 | length--; | |
3680 | } else { | |
3681 | dev_kfree_skb_irq(skb); | |
3682 | goto next_desc; | |
3683 | } | |
3684 | } | |
3685 | ||
a292ca6e JK |
3686 | /* code added for copybreak, this should improve |
3687 | * performance for small packets with large amounts | |
3688 | * of reassembly being done in the stack */ | |
3689 | #define E1000_CB_LENGTH 256 | |
a1415ee6 | 3690 | if (length < E1000_CB_LENGTH) { |
a292ca6e JK |
3691 | struct sk_buff *new_skb = |
3692 | dev_alloc_skb(length + NET_IP_ALIGN); | |
3693 | if (new_skb) { | |
3694 | skb_reserve(new_skb, NET_IP_ALIGN); | |
3695 | new_skb->dev = netdev; | |
3696 | memcpy(new_skb->data - NET_IP_ALIGN, | |
3697 | skb->data - NET_IP_ALIGN, | |
3698 | length + NET_IP_ALIGN); | |
3699 | /* save the skb in buffer_info as good */ | |
3700 | buffer_info->skb = skb; | |
3701 | skb = new_skb; | |
3702 | skb_put(skb, length); | |
3703 | } | |
a1415ee6 JK |
3704 | } else |
3705 | skb_put(skb, length); | |
a292ca6e JK |
3706 | |
3707 | /* end copybreak code */ | |
1da177e4 LT |
3708 | |
3709 | /* Receive Checksum Offload */ | |
a292ca6e JK |
3710 | e1000_rx_checksum(adapter, |
3711 | (uint32_t)(status) | | |
2d7edb92 MC |
3712 | ((uint32_t)(rx_desc->errors) << 24), |
3713 | rx_desc->csum, skb); | |
96838a40 | 3714 | |
1da177e4 LT |
3715 | skb->protocol = eth_type_trans(skb, netdev); |
3716 | #ifdef CONFIG_E1000_NAPI | |
96838a40 | 3717 | if (unlikely(adapter->vlgrp && |
a292ca6e | 3718 | (status & E1000_RXD_STAT_VP))) { |
1da177e4 | 3719 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
2d7edb92 MC |
3720 | le16_to_cpu(rx_desc->special) & |
3721 | E1000_RXD_SPC_VLAN_MASK); | |
1da177e4 LT |
3722 | } else { |
3723 | netif_receive_skb(skb); | |
3724 | } | |
3725 | #else /* CONFIG_E1000_NAPI */ | |
96838a40 | 3726 | if (unlikely(adapter->vlgrp && |
b92ff8ee | 3727 | (status & E1000_RXD_STAT_VP))) { |
1da177e4 LT |
3728 | vlan_hwaccel_rx(skb, adapter->vlgrp, |
3729 | le16_to_cpu(rx_desc->special) & | |
3730 | E1000_RXD_SPC_VLAN_MASK); | |
3731 | } else { | |
3732 | netif_rx(skb); | |
3733 | } | |
3734 | #endif /* CONFIG_E1000_NAPI */ | |
3735 | netdev->last_rx = jiffies; | |
7bfa4816 JK |
3736 | #ifdef CONFIG_E1000_MQ |
3737 | rx_ring->rx_stats.packets++; | |
3738 | rx_ring->rx_stats.bytes += length; | |
3739 | #endif | |
1da177e4 LT |
3740 | |
3741 | next_desc: | |
3742 | rx_desc->status = 0; | |
1da177e4 | 3743 | |
72d64a43 JK |
3744 | /* return some buffers to hardware, one at a time is too slow */ |
3745 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
3746 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
3747 | cleaned_count = 0; | |
3748 | } | |
3749 | ||
86c3d59f JB |
3750 | rx_desc = next_rxd; |
3751 | buffer_info = next_buffer; | |
1da177e4 | 3752 | } |
1da177e4 | 3753 | rx_ring->next_to_clean = i; |
72d64a43 JK |
3754 | |
3755 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
3756 | if (cleaned_count) | |
3757 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
2d7edb92 MC |
3758 | |
3759 | return cleaned; | |
3760 | } | |
3761 | ||
3762 | /** | |
3763 | * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split | |
3764 | * @adapter: board private structure | |
3765 | **/ | |
3766 | ||
3767 | static boolean_t | |
3768 | #ifdef CONFIG_E1000_NAPI | |
581d708e MC |
3769 | e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
3770 | struct e1000_rx_ring *rx_ring, | |
3771 | int *work_done, int work_to_do) | |
2d7edb92 | 3772 | #else |
581d708e MC |
3773 | e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, |
3774 | struct e1000_rx_ring *rx_ring) | |
2d7edb92 MC |
3775 | #endif |
3776 | { | |
86c3d59f | 3777 | union e1000_rx_desc_packet_split *rx_desc, *next_rxd; |
2d7edb92 MC |
3778 | struct net_device *netdev = adapter->netdev; |
3779 | struct pci_dev *pdev = adapter->pdev; | |
86c3d59f | 3780 | struct e1000_buffer *buffer_info, *next_buffer; |
2d7edb92 MC |
3781 | struct e1000_ps_page *ps_page; |
3782 | struct e1000_ps_page_dma *ps_page_dma; | |
86c3d59f | 3783 | struct sk_buff *skb, *next_skb; |
2d7edb92 MC |
3784 | unsigned int i, j; |
3785 | uint32_t length, staterr; | |
72d64a43 | 3786 | int cleaned_count = 0; |
2d7edb92 MC |
3787 | boolean_t cleaned = FALSE; |
3788 | ||
3789 | i = rx_ring->next_to_clean; | |
3790 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
683a38f3 | 3791 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
86c3d59f | 3792 | buffer_info = &rx_ring->buffer_info[i]; |
2d7edb92 | 3793 | |
96838a40 | 3794 | while (staterr & E1000_RXD_STAT_DD) { |
2d7edb92 MC |
3795 | ps_page = &rx_ring->ps_page[i]; |
3796 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
3797 | #ifdef CONFIG_E1000_NAPI | |
96838a40 | 3798 | if (unlikely(*work_done >= work_to_do)) |
2d7edb92 MC |
3799 | break; |
3800 | (*work_done)++; | |
3801 | #endif | |
86c3d59f JB |
3802 | skb = buffer_info->skb; |
3803 | ||
3804 | if (++i == rx_ring->count) i = 0; | |
3805 | next_rxd = E1000_RX_DESC_PS(*rx_ring, i); | |
3806 | next_buffer = &rx_ring->buffer_info[i]; | |
3807 | next_skb = next_buffer->skb; | |
3808 | ||
2d7edb92 | 3809 | cleaned = TRUE; |
72d64a43 | 3810 | cleaned_count++; |
2d7edb92 MC |
3811 | pci_unmap_single(pdev, buffer_info->dma, |
3812 | buffer_info->length, | |
3813 | PCI_DMA_FROMDEVICE); | |
3814 | ||
96838a40 | 3815 | if (unlikely(!(staterr & E1000_RXD_STAT_EOP))) { |
2d7edb92 MC |
3816 | E1000_DBG("%s: Packet Split buffers didn't pick up" |
3817 | " the full packet\n", netdev->name); | |
3818 | dev_kfree_skb_irq(skb); | |
3819 | goto next_desc; | |
3820 | } | |
1da177e4 | 3821 | |
96838a40 | 3822 | if (unlikely(staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK)) { |
2d7edb92 MC |
3823 | dev_kfree_skb_irq(skb); |
3824 | goto next_desc; | |
3825 | } | |
3826 | ||
3827 | length = le16_to_cpu(rx_desc->wb.middle.length0); | |
3828 | ||
96838a40 | 3829 | if (unlikely(!length)) { |
2d7edb92 MC |
3830 | E1000_DBG("%s: Last part of the packet spanning" |
3831 | " multiple descriptors\n", netdev->name); | |
3832 | dev_kfree_skb_irq(skb); | |
3833 | goto next_desc; | |
3834 | } | |
3835 | ||
3836 | /* Good Receive */ | |
3837 | skb_put(skb, length); | |
3838 | ||
96838a40 JB |
3839 | for (j = 0; j < adapter->rx_ps_pages; j++) { |
3840 | if (!(length = le16_to_cpu(rx_desc->wb.upper.length[j]))) | |
2d7edb92 MC |
3841 | break; |
3842 | ||
3843 | pci_unmap_page(pdev, ps_page_dma->ps_page_dma[j], | |
3844 | PAGE_SIZE, PCI_DMA_FROMDEVICE); | |
3845 | ps_page_dma->ps_page_dma[j] = 0; | |
3846 | skb_shinfo(skb)->frags[j].page = | |
3847 | ps_page->ps_page[j]; | |
3848 | ps_page->ps_page[j] = NULL; | |
3849 | skb_shinfo(skb)->frags[j].page_offset = 0; | |
3850 | skb_shinfo(skb)->frags[j].size = length; | |
3851 | skb_shinfo(skb)->nr_frags++; | |
3852 | skb->len += length; | |
3853 | skb->data_len += length; | |
3854 | } | |
3855 | ||
3856 | e1000_rx_checksum(adapter, staterr, | |
3857 | rx_desc->wb.lower.hi_dword.csum_ip.csum, skb); | |
3858 | skb->protocol = eth_type_trans(skb, netdev); | |
3859 | ||
96838a40 | 3860 | if (likely(rx_desc->wb.upper.header_status & |
b92ff8ee | 3861 | E1000_RXDPS_HDRSTAT_HDRSP)) |
e4c811c9 | 3862 | adapter->rx_hdr_split++; |
2d7edb92 | 3863 | #ifdef CONFIG_E1000_NAPI |
96838a40 | 3864 | if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) { |
2d7edb92 | 3865 | vlan_hwaccel_receive_skb(skb, adapter->vlgrp, |
683a38f3 MC |
3866 | le16_to_cpu(rx_desc->wb.middle.vlan) & |
3867 | E1000_RXD_SPC_VLAN_MASK); | |
2d7edb92 MC |
3868 | } else { |
3869 | netif_receive_skb(skb); | |
3870 | } | |
3871 | #else /* CONFIG_E1000_NAPI */ | |
96838a40 | 3872 | if (unlikely(adapter->vlgrp && (staterr & E1000_RXD_STAT_VP))) { |
2d7edb92 | 3873 | vlan_hwaccel_rx(skb, adapter->vlgrp, |
683a38f3 MC |
3874 | le16_to_cpu(rx_desc->wb.middle.vlan) & |
3875 | E1000_RXD_SPC_VLAN_MASK); | |
2d7edb92 MC |
3876 | } else { |
3877 | netif_rx(skb); | |
3878 | } | |
3879 | #endif /* CONFIG_E1000_NAPI */ | |
3880 | netdev->last_rx = jiffies; | |
7bfa4816 JK |
3881 | #ifdef CONFIG_E1000_MQ |
3882 | rx_ring->rx_stats.packets++; | |
3883 | rx_ring->rx_stats.bytes += length; | |
3884 | #endif | |
2d7edb92 MC |
3885 | |
3886 | next_desc: | |
3887 | rx_desc->wb.middle.status_error &= ~0xFF; | |
3888 | buffer_info->skb = NULL; | |
2d7edb92 | 3889 | |
72d64a43 JK |
3890 | /* return some buffers to hardware, one at a time is too slow */ |
3891 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
3892 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
3893 | cleaned_count = 0; | |
3894 | } | |
3895 | ||
86c3d59f JB |
3896 | rx_desc = next_rxd; |
3897 | buffer_info = next_buffer; | |
3898 | ||
683a38f3 | 3899 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); |
2d7edb92 MC |
3900 | } |
3901 | rx_ring->next_to_clean = i; | |
72d64a43 JK |
3902 | |
3903 | cleaned_count = E1000_DESC_UNUSED(rx_ring); | |
3904 | if (cleaned_count) | |
3905 | adapter->alloc_rx_buf(adapter, rx_ring, cleaned_count); | |
1da177e4 LT |
3906 | |
3907 | return cleaned; | |
3908 | } | |
3909 | ||
3910 | /** | |
2d7edb92 | 3911 | * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended |
1da177e4 LT |
3912 | * @adapter: address of board private structure |
3913 | **/ | |
3914 | ||
3915 | static void | |
581d708e | 3916 | e1000_alloc_rx_buffers(struct e1000_adapter *adapter, |
72d64a43 | 3917 | struct e1000_rx_ring *rx_ring, |
a292ca6e | 3918 | int cleaned_count) |
1da177e4 | 3919 | { |
1da177e4 LT |
3920 | struct net_device *netdev = adapter->netdev; |
3921 | struct pci_dev *pdev = adapter->pdev; | |
3922 | struct e1000_rx_desc *rx_desc; | |
3923 | struct e1000_buffer *buffer_info; | |
3924 | struct sk_buff *skb; | |
2648345f MC |
3925 | unsigned int i; |
3926 | unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN; | |
1da177e4 LT |
3927 | |
3928 | i = rx_ring->next_to_use; | |
3929 | buffer_info = &rx_ring->buffer_info[i]; | |
3930 | ||
a292ca6e JK |
3931 | while (cleaned_count--) { |
3932 | if (!(skb = buffer_info->skb)) | |
3933 | skb = dev_alloc_skb(bufsz); | |
3934 | else { | |
3935 | skb_trim(skb, 0); | |
3936 | goto map_skb; | |
3937 | } | |
3938 | ||
2648345f | 3939 | |
96838a40 | 3940 | if (unlikely(!skb)) { |
1da177e4 | 3941 | /* Better luck next round */ |
72d64a43 | 3942 | adapter->alloc_rx_buff_failed++; |
1da177e4 LT |
3943 | break; |
3944 | } | |
3945 | ||
2648345f | 3946 | /* Fix for errata 23, can't cross 64kB boundary */ |
1da177e4 LT |
3947 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
3948 | struct sk_buff *oldskb = skb; | |
2648345f MC |
3949 | DPRINTK(RX_ERR, ERR, "skb align check failed: %u bytes " |
3950 | "at %p\n", bufsz, skb->data); | |
3951 | /* Try again, without freeing the previous */ | |
1da177e4 | 3952 | skb = dev_alloc_skb(bufsz); |
2648345f | 3953 | /* Failed allocation, critical failure */ |
1da177e4 LT |
3954 | if (!skb) { |
3955 | dev_kfree_skb(oldskb); | |
3956 | break; | |
3957 | } | |
2648345f | 3958 | |
1da177e4 LT |
3959 | if (!e1000_check_64k_bound(adapter, skb->data, bufsz)) { |
3960 | /* give up */ | |
3961 | dev_kfree_skb(skb); | |
3962 | dev_kfree_skb(oldskb); | |
3963 | break; /* while !buffer_info->skb */ | |
3964 | } else { | |
2648345f | 3965 | /* Use new allocation */ |
1da177e4 LT |
3966 | dev_kfree_skb(oldskb); |
3967 | } | |
3968 | } | |
1da177e4 LT |
3969 | /* Make buffer alignment 2 beyond a 16 byte boundary |
3970 | * this will result in a 16 byte aligned IP header after | |
3971 | * the 14 byte MAC header is removed | |
3972 | */ | |
3973 | skb_reserve(skb, NET_IP_ALIGN); | |
3974 | ||
3975 | skb->dev = netdev; | |
3976 | ||
3977 | buffer_info->skb = skb; | |
3978 | buffer_info->length = adapter->rx_buffer_len; | |
a292ca6e | 3979 | map_skb: |
1da177e4 LT |
3980 | buffer_info->dma = pci_map_single(pdev, |
3981 | skb->data, | |
3982 | adapter->rx_buffer_len, | |
3983 | PCI_DMA_FROMDEVICE); | |
3984 | ||
2648345f MC |
3985 | /* Fix for errata 23, can't cross 64kB boundary */ |
3986 | if (!e1000_check_64k_bound(adapter, | |
3987 | (void *)(unsigned long)buffer_info->dma, | |
3988 | adapter->rx_buffer_len)) { | |
3989 | DPRINTK(RX_ERR, ERR, | |
3990 | "dma align check failed: %u bytes at %p\n", | |
3991 | adapter->rx_buffer_len, | |
3992 | (void *)(unsigned long)buffer_info->dma); | |
1da177e4 LT |
3993 | dev_kfree_skb(skb); |
3994 | buffer_info->skb = NULL; | |
3995 | ||
2648345f | 3996 | pci_unmap_single(pdev, buffer_info->dma, |
1da177e4 LT |
3997 | adapter->rx_buffer_len, |
3998 | PCI_DMA_FROMDEVICE); | |
3999 | ||
4000 | break; /* while !buffer_info->skb */ | |
4001 | } | |
1da177e4 LT |
4002 | rx_desc = E1000_RX_DESC(*rx_ring, i); |
4003 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
4004 | ||
96838a40 JB |
4005 | if (unlikely(++i == rx_ring->count)) |
4006 | i = 0; | |
1da177e4 LT |
4007 | buffer_info = &rx_ring->buffer_info[i]; |
4008 | } | |
4009 | ||
b92ff8ee JB |
4010 | if (likely(rx_ring->next_to_use != i)) { |
4011 | rx_ring->next_to_use = i; | |
4012 | if (unlikely(i-- == 0)) | |
4013 | i = (rx_ring->count - 1); | |
4014 | ||
4015 | /* Force memory writes to complete before letting h/w | |
4016 | * know there are new descriptors to fetch. (Only | |
4017 | * applicable for weak-ordered memory model archs, | |
4018 | * such as IA-64). */ | |
4019 | wmb(); | |
4020 | writel(i, adapter->hw.hw_addr + rx_ring->rdt); | |
4021 | } | |
1da177e4 LT |
4022 | } |
4023 | ||
2d7edb92 MC |
4024 | /** |
4025 | * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split | |
4026 | * @adapter: address of board private structure | |
4027 | **/ | |
4028 | ||
4029 | static void | |
581d708e | 4030 | e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, |
72d64a43 JK |
4031 | struct e1000_rx_ring *rx_ring, |
4032 | int cleaned_count) | |
2d7edb92 | 4033 | { |
2d7edb92 MC |
4034 | struct net_device *netdev = adapter->netdev; |
4035 | struct pci_dev *pdev = adapter->pdev; | |
4036 | union e1000_rx_desc_packet_split *rx_desc; | |
4037 | struct e1000_buffer *buffer_info; | |
4038 | struct e1000_ps_page *ps_page; | |
4039 | struct e1000_ps_page_dma *ps_page_dma; | |
4040 | struct sk_buff *skb; | |
4041 | unsigned int i, j; | |
4042 | ||
4043 | i = rx_ring->next_to_use; | |
4044 | buffer_info = &rx_ring->buffer_info[i]; | |
4045 | ps_page = &rx_ring->ps_page[i]; | |
4046 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
4047 | ||
72d64a43 | 4048 | while (cleaned_count--) { |
2d7edb92 MC |
4049 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); |
4050 | ||
96838a40 | 4051 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { |
e4c811c9 MC |
4052 | if (j < adapter->rx_ps_pages) { |
4053 | if (likely(!ps_page->ps_page[j])) { | |
4054 | ps_page->ps_page[j] = | |
4055 | alloc_page(GFP_ATOMIC); | |
b92ff8ee JB |
4056 | if (unlikely(!ps_page->ps_page[j])) { |
4057 | adapter->alloc_rx_buff_failed++; | |
e4c811c9 | 4058 | goto no_buffers; |
b92ff8ee | 4059 | } |
e4c811c9 MC |
4060 | ps_page_dma->ps_page_dma[j] = |
4061 | pci_map_page(pdev, | |
4062 | ps_page->ps_page[j], | |
4063 | 0, PAGE_SIZE, | |
4064 | PCI_DMA_FROMDEVICE); | |
4065 | } | |
4066 | /* Refresh the desc even if buffer_addrs didn't | |
96838a40 | 4067 | * change because each write-back erases |
e4c811c9 MC |
4068 | * this info. |
4069 | */ | |
4070 | rx_desc->read.buffer_addr[j+1] = | |
4071 | cpu_to_le64(ps_page_dma->ps_page_dma[j]); | |
4072 | } else | |
4073 | rx_desc->read.buffer_addr[j+1] = ~0; | |
2d7edb92 MC |
4074 | } |
4075 | ||
4076 | skb = dev_alloc_skb(adapter->rx_ps_bsize0 + NET_IP_ALIGN); | |
4077 | ||
b92ff8ee JB |
4078 | if (unlikely(!skb)) { |
4079 | adapter->alloc_rx_buff_failed++; | |
2d7edb92 | 4080 | break; |
b92ff8ee | 4081 | } |
2d7edb92 MC |
4082 | |
4083 | /* Make buffer alignment 2 beyond a 16 byte boundary | |
4084 | * this will result in a 16 byte aligned IP header after | |
4085 | * the 14 byte MAC header is removed | |
4086 | */ | |
4087 | skb_reserve(skb, NET_IP_ALIGN); | |
4088 | ||
4089 | skb->dev = netdev; | |
4090 | ||
4091 | buffer_info->skb = skb; | |
4092 | buffer_info->length = adapter->rx_ps_bsize0; | |
4093 | buffer_info->dma = pci_map_single(pdev, skb->data, | |
4094 | adapter->rx_ps_bsize0, | |
4095 | PCI_DMA_FROMDEVICE); | |
4096 | ||
4097 | rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); | |
4098 | ||
96838a40 | 4099 | if (unlikely(++i == rx_ring->count)) i = 0; |
2d7edb92 MC |
4100 | buffer_info = &rx_ring->buffer_info[i]; |
4101 | ps_page = &rx_ring->ps_page[i]; | |
4102 | ps_page_dma = &rx_ring->ps_page_dma[i]; | |
4103 | } | |
4104 | ||
4105 | no_buffers: | |
b92ff8ee JB |
4106 | if (likely(rx_ring->next_to_use != i)) { |
4107 | rx_ring->next_to_use = i; | |
4108 | if (unlikely(i-- == 0)) i = (rx_ring->count - 1); | |
4109 | ||
4110 | /* Force memory writes to complete before letting h/w | |
4111 | * know there are new descriptors to fetch. (Only | |
4112 | * applicable for weak-ordered memory model archs, | |
4113 | * such as IA-64). */ | |
4114 | wmb(); | |
4115 | /* Hardware increments by 16 bytes, but packet split | |
4116 | * descriptors are 32 bytes...so we increment tail | |
4117 | * twice as much. | |
4118 | */ | |
4119 | writel(i<<1, adapter->hw.hw_addr + rx_ring->rdt); | |
4120 | } | |
2d7edb92 MC |
4121 | } |
4122 | ||
1da177e4 LT |
4123 | /** |
4124 | * e1000_smartspeed - Workaround for SmartSpeed on 82541 and 82547 controllers. | |
4125 | * @adapter: | |
4126 | **/ | |
4127 | ||
4128 | static void | |
4129 | e1000_smartspeed(struct e1000_adapter *adapter) | |
4130 | { | |
4131 | uint16_t phy_status; | |
4132 | uint16_t phy_ctrl; | |
4133 | ||
96838a40 | 4134 | if ((adapter->hw.phy_type != e1000_phy_igp) || !adapter->hw.autoneg || |
1da177e4 LT |
4135 | !(adapter->hw.autoneg_advertised & ADVERTISE_1000_FULL)) |
4136 | return; | |
4137 | ||
96838a40 | 4138 | if (adapter->smartspeed == 0) { |
1da177e4 LT |
4139 | /* If Master/Slave config fault is asserted twice, |
4140 | * we assume back-to-back */ | |
4141 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); | |
96838a40 | 4142 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1da177e4 | 4143 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_STATUS, &phy_status); |
96838a40 | 4144 | if (!(phy_status & SR_1000T_MS_CONFIG_FAULT)) return; |
1da177e4 | 4145 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); |
96838a40 | 4146 | if (phy_ctrl & CR_1000T_MS_ENABLE) { |
1da177e4 LT |
4147 | phy_ctrl &= ~CR_1000T_MS_ENABLE; |
4148 | e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, | |
4149 | phy_ctrl); | |
4150 | adapter->smartspeed++; | |
96838a40 | 4151 | if (!e1000_phy_setup_autoneg(&adapter->hw) && |
1da177e4 LT |
4152 | !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, |
4153 | &phy_ctrl)) { | |
4154 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
4155 | MII_CR_RESTART_AUTO_NEG); | |
4156 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, | |
4157 | phy_ctrl); | |
4158 | } | |
4159 | } | |
4160 | return; | |
96838a40 | 4161 | } else if (adapter->smartspeed == E1000_SMARTSPEED_DOWNSHIFT) { |
1da177e4 LT |
4162 | /* If still no link, perhaps using 2/3 pair cable */ |
4163 | e1000_read_phy_reg(&adapter->hw, PHY_1000T_CTRL, &phy_ctrl); | |
4164 | phy_ctrl |= CR_1000T_MS_ENABLE; | |
4165 | e1000_write_phy_reg(&adapter->hw, PHY_1000T_CTRL, phy_ctrl); | |
96838a40 | 4166 | if (!e1000_phy_setup_autoneg(&adapter->hw) && |
1da177e4 LT |
4167 | !e1000_read_phy_reg(&adapter->hw, PHY_CTRL, &phy_ctrl)) { |
4168 | phy_ctrl |= (MII_CR_AUTO_NEG_EN | | |
4169 | MII_CR_RESTART_AUTO_NEG); | |
4170 | e1000_write_phy_reg(&adapter->hw, PHY_CTRL, phy_ctrl); | |
4171 | } | |
4172 | } | |
4173 | /* Restart process after E1000_SMARTSPEED_MAX iterations */ | |
96838a40 | 4174 | if (adapter->smartspeed++ == E1000_SMARTSPEED_MAX) |
1da177e4 LT |
4175 | adapter->smartspeed = 0; |
4176 | } | |
4177 | ||
4178 | /** | |
4179 | * e1000_ioctl - | |
4180 | * @netdev: | |
4181 | * @ifreq: | |
4182 | * @cmd: | |
4183 | **/ | |
4184 | ||
4185 | static int | |
4186 | e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
4187 | { | |
4188 | switch (cmd) { | |
4189 | case SIOCGMIIPHY: | |
4190 | case SIOCGMIIREG: | |
4191 | case SIOCSMIIREG: | |
4192 | return e1000_mii_ioctl(netdev, ifr, cmd); | |
4193 | default: | |
4194 | return -EOPNOTSUPP; | |
4195 | } | |
4196 | } | |
4197 | ||
4198 | /** | |
4199 | * e1000_mii_ioctl - | |
4200 | * @netdev: | |
4201 | * @ifreq: | |
4202 | * @cmd: | |
4203 | **/ | |
4204 | ||
4205 | static int | |
4206 | e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
4207 | { | |
60490fe0 | 4208 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
4209 | struct mii_ioctl_data *data = if_mii(ifr); |
4210 | int retval; | |
4211 | uint16_t mii_reg; | |
4212 | uint16_t spddplx; | |
97876fc6 | 4213 | unsigned long flags; |
1da177e4 | 4214 | |
96838a40 | 4215 | if (adapter->hw.media_type != e1000_media_type_copper) |
1da177e4 LT |
4216 | return -EOPNOTSUPP; |
4217 | ||
4218 | switch (cmd) { | |
4219 | case SIOCGMIIPHY: | |
4220 | data->phy_id = adapter->hw.phy_addr; | |
4221 | break; | |
4222 | case SIOCGMIIREG: | |
96838a40 | 4223 | if (!capable(CAP_NET_ADMIN)) |
1da177e4 | 4224 | return -EPERM; |
97876fc6 | 4225 | spin_lock_irqsave(&adapter->stats_lock, flags); |
96838a40 | 4226 | if (e1000_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
97876fc6 MC |
4227 | &data->val_out)) { |
4228 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4229 | return -EIO; |
97876fc6 MC |
4230 | } |
4231 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 LT |
4232 | break; |
4233 | case SIOCSMIIREG: | |
96838a40 | 4234 | if (!capable(CAP_NET_ADMIN)) |
1da177e4 | 4235 | return -EPERM; |
96838a40 | 4236 | if (data->reg_num & ~(0x1F)) |
1da177e4 LT |
4237 | return -EFAULT; |
4238 | mii_reg = data->val_in; | |
97876fc6 | 4239 | spin_lock_irqsave(&adapter->stats_lock, flags); |
96838a40 | 4240 | if (e1000_write_phy_reg(&adapter->hw, data->reg_num, |
97876fc6 MC |
4241 | mii_reg)) { |
4242 | spin_unlock_irqrestore(&adapter->stats_lock, flags); | |
1da177e4 | 4243 | return -EIO; |
97876fc6 | 4244 | } |
96838a40 | 4245 | if (adapter->hw.phy_type == e1000_phy_m88) { |
1da177e4 LT |
4246 | switch (data->reg_num) { |
4247 | case PHY_CTRL: | |
96838a40 | 4248 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4249 | break; |
96838a40 | 4250 | if (mii_reg & MII_CR_AUTO_NEG_EN) { |
1da177e4 LT |
4251 | adapter->hw.autoneg = 1; |
4252 | adapter->hw.autoneg_advertised = 0x2F; | |
4253 | } else { | |
4254 | if (mii_reg & 0x40) | |
4255 | spddplx = SPEED_1000; | |
4256 | else if (mii_reg & 0x2000) | |
4257 | spddplx = SPEED_100; | |
4258 | else | |
4259 | spddplx = SPEED_10; | |
4260 | spddplx += (mii_reg & 0x100) | |
4261 | ? FULL_DUPLEX : | |
4262 | HALF_DUPLEX; | |
4263 | retval = e1000_set_spd_dplx(adapter, | |
4264 | spddplx); | |
96838a40 | 4265 | if (retval) { |
97876fc6 | 4266 | spin_unlock_irqrestore( |
96838a40 | 4267 | &adapter->stats_lock, |
97876fc6 | 4268 | flags); |
1da177e4 | 4269 | return retval; |
97876fc6 | 4270 | } |
1da177e4 | 4271 | } |
96838a40 | 4272 | if (netif_running(adapter->netdev)) { |
1da177e4 LT |
4273 | e1000_down(adapter); |
4274 | e1000_up(adapter); | |
4275 | } else | |
4276 | e1000_reset(adapter); | |
4277 | break; | |
4278 | case M88E1000_PHY_SPEC_CTRL: | |
4279 | case M88E1000_EXT_PHY_SPEC_CTRL: | |
96838a40 | 4280 | if (e1000_phy_reset(&adapter->hw)) { |
97876fc6 MC |
4281 | spin_unlock_irqrestore( |
4282 | &adapter->stats_lock, flags); | |
1da177e4 | 4283 | return -EIO; |
97876fc6 | 4284 | } |
1da177e4 LT |
4285 | break; |
4286 | } | |
4287 | } else { | |
4288 | switch (data->reg_num) { | |
4289 | case PHY_CTRL: | |
96838a40 | 4290 | if (mii_reg & MII_CR_POWER_DOWN) |
1da177e4 | 4291 | break; |
96838a40 | 4292 | if (netif_running(adapter->netdev)) { |
1da177e4 LT |
4293 | e1000_down(adapter); |
4294 | e1000_up(adapter); | |
4295 | } else | |
4296 | e1000_reset(adapter); | |
4297 | break; | |
4298 | } | |
4299 | } | |
97876fc6 | 4300 | spin_unlock_irqrestore(&adapter->stats_lock, flags); |
1da177e4 LT |
4301 | break; |
4302 | default: | |
4303 | return -EOPNOTSUPP; | |
4304 | } | |
4305 | return E1000_SUCCESS; | |
4306 | } | |
4307 | ||
4308 | void | |
4309 | e1000_pci_set_mwi(struct e1000_hw *hw) | |
4310 | { | |
4311 | struct e1000_adapter *adapter = hw->back; | |
2648345f | 4312 | int ret_val = pci_set_mwi(adapter->pdev); |
1da177e4 | 4313 | |
96838a40 | 4314 | if (ret_val) |
2648345f | 4315 | DPRINTK(PROBE, ERR, "Error in setting MWI\n"); |
1da177e4 LT |
4316 | } |
4317 | ||
4318 | void | |
4319 | e1000_pci_clear_mwi(struct e1000_hw *hw) | |
4320 | { | |
4321 | struct e1000_adapter *adapter = hw->back; | |
4322 | ||
4323 | pci_clear_mwi(adapter->pdev); | |
4324 | } | |
4325 | ||
4326 | void | |
4327 | e1000_read_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) | |
4328 | { | |
4329 | struct e1000_adapter *adapter = hw->back; | |
4330 | ||
4331 | pci_read_config_word(adapter->pdev, reg, value); | |
4332 | } | |
4333 | ||
4334 | void | |
4335 | e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t *value) | |
4336 | { | |
4337 | struct e1000_adapter *adapter = hw->back; | |
4338 | ||
4339 | pci_write_config_word(adapter->pdev, reg, *value); | |
4340 | } | |
4341 | ||
4342 | uint32_t | |
4343 | e1000_io_read(struct e1000_hw *hw, unsigned long port) | |
4344 | { | |
4345 | return inl(port); | |
4346 | } | |
4347 | ||
4348 | void | |
4349 | e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value) | |
4350 | { | |
4351 | outl(value, port); | |
4352 | } | |
4353 | ||
4354 | static void | |
4355 | e1000_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp) | |
4356 | { | |
60490fe0 | 4357 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
4358 | uint32_t ctrl, rctl; |
4359 | ||
4360 | e1000_irq_disable(adapter); | |
4361 | adapter->vlgrp = grp; | |
4362 | ||
96838a40 | 4363 | if (grp) { |
1da177e4 LT |
4364 | /* enable VLAN tag insert/strip */ |
4365 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
4366 | ctrl |= E1000_CTRL_VME; | |
4367 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
4368 | ||
4369 | /* enable VLAN receive filtering */ | |
4370 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
4371 | rctl |= E1000_RCTL_VFE; | |
4372 | rctl &= ~E1000_RCTL_CFIEN; | |
4373 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
2d7edb92 | 4374 | e1000_update_mng_vlan(adapter); |
1da177e4 LT |
4375 | } else { |
4376 | /* disable VLAN tag insert/strip */ | |
4377 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); | |
4378 | ctrl &= ~E1000_CTRL_VME; | |
4379 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
4380 | ||
4381 | /* disable VLAN filtering */ | |
4382 | rctl = E1000_READ_REG(&adapter->hw, RCTL); | |
4383 | rctl &= ~E1000_RCTL_VFE; | |
4384 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
96838a40 | 4385 | if (adapter->mng_vlan_id != (uint16_t)E1000_MNG_VLAN_NONE) { |
2d7edb92 MC |
4386 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); |
4387 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
4388 | } | |
1da177e4 LT |
4389 | } |
4390 | ||
4391 | e1000_irq_enable(adapter); | |
4392 | } | |
4393 | ||
4394 | static void | |
4395 | e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid) | |
4396 | { | |
60490fe0 | 4397 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 | 4398 | uint32_t vfta, index; |
96838a40 JB |
4399 | |
4400 | if ((adapter->hw.mng_cookie.status & | |
4401 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && | |
4402 | (vid == adapter->mng_vlan_id)) | |
2d7edb92 | 4403 | return; |
1da177e4 LT |
4404 | /* add VID to filter table */ |
4405 | index = (vid >> 5) & 0x7F; | |
4406 | vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
4407 | vfta |= (1 << (vid & 0x1F)); | |
4408 | e1000_write_vfta(&adapter->hw, index, vfta); | |
4409 | } | |
4410 | ||
4411 | static void | |
4412 | e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid) | |
4413 | { | |
60490fe0 | 4414 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
4415 | uint32_t vfta, index; |
4416 | ||
4417 | e1000_irq_disable(adapter); | |
4418 | ||
96838a40 | 4419 | if (adapter->vlgrp) |
1da177e4 LT |
4420 | adapter->vlgrp->vlan_devices[vid] = NULL; |
4421 | ||
4422 | e1000_irq_enable(adapter); | |
4423 | ||
96838a40 JB |
4424 | if ((adapter->hw.mng_cookie.status & |
4425 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT) && | |
ff147013 JK |
4426 | (vid == adapter->mng_vlan_id)) { |
4427 | /* release control to f/w */ | |
4428 | e1000_release_hw_control(adapter); | |
2d7edb92 | 4429 | return; |
ff147013 JK |
4430 | } |
4431 | ||
1da177e4 LT |
4432 | /* remove VID from filter table */ |
4433 | index = (vid >> 5) & 0x7F; | |
4434 | vfta = E1000_READ_REG_ARRAY(&adapter->hw, VFTA, index); | |
4435 | vfta &= ~(1 << (vid & 0x1F)); | |
4436 | e1000_write_vfta(&adapter->hw, index, vfta); | |
4437 | } | |
4438 | ||
4439 | static void | |
4440 | e1000_restore_vlan(struct e1000_adapter *adapter) | |
4441 | { | |
4442 | e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
4443 | ||
96838a40 | 4444 | if (adapter->vlgrp) { |
1da177e4 | 4445 | uint16_t vid; |
96838a40 JB |
4446 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { |
4447 | if (!adapter->vlgrp->vlan_devices[vid]) | |
1da177e4 LT |
4448 | continue; |
4449 | e1000_vlan_rx_add_vid(adapter->netdev, vid); | |
4450 | } | |
4451 | } | |
4452 | } | |
4453 | ||
4454 | int | |
4455 | e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx) | |
4456 | { | |
4457 | adapter->hw.autoneg = 0; | |
4458 | ||
6921368f | 4459 | /* Fiber NICs only allow 1000 gbps Full duplex */ |
96838a40 | 4460 | if ((adapter->hw.media_type == e1000_media_type_fiber) && |
6921368f MC |
4461 | spddplx != (SPEED_1000 + DUPLEX_FULL)) { |
4462 | DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); | |
4463 | return -EINVAL; | |
4464 | } | |
4465 | ||
96838a40 | 4466 | switch (spddplx) { |
1da177e4 LT |
4467 | case SPEED_10 + DUPLEX_HALF: |
4468 | adapter->hw.forced_speed_duplex = e1000_10_half; | |
4469 | break; | |
4470 | case SPEED_10 + DUPLEX_FULL: | |
4471 | adapter->hw.forced_speed_duplex = e1000_10_full; | |
4472 | break; | |
4473 | case SPEED_100 + DUPLEX_HALF: | |
4474 | adapter->hw.forced_speed_duplex = e1000_100_half; | |
4475 | break; | |
4476 | case SPEED_100 + DUPLEX_FULL: | |
4477 | adapter->hw.forced_speed_duplex = e1000_100_full; | |
4478 | break; | |
4479 | case SPEED_1000 + DUPLEX_FULL: | |
4480 | adapter->hw.autoneg = 1; | |
4481 | adapter->hw.autoneg_advertised = ADVERTISE_1000_FULL; | |
4482 | break; | |
4483 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ | |
4484 | default: | |
2648345f | 4485 | DPRINTK(PROBE, ERR, "Unsupported Speed/Duplex configuration\n"); |
1da177e4 LT |
4486 | return -EINVAL; |
4487 | } | |
4488 | return 0; | |
4489 | } | |
4490 | ||
b6a1d5f8 | 4491 | #ifdef CONFIG_PM |
2f82665f JB |
4492 | /* these functions save and restore 16 or 64 dwords (64-256 bytes) of config |
4493 | * space versus the 64 bytes that pci_[save|restore]_state handle | |
4494 | */ | |
4495 | #define PCIE_CONFIG_SPACE_LEN 256 | |
4496 | #define PCI_CONFIG_SPACE_LEN 64 | |
4497 | static int | |
4498 | e1000_pci_save_state(struct e1000_adapter *adapter) | |
4499 | { | |
4500 | struct pci_dev *dev = adapter->pdev; | |
4501 | int size; | |
4502 | int i; | |
4503 | if (adapter->hw.mac_type >= e1000_82571) | |
4504 | size = PCIE_CONFIG_SPACE_LEN; | |
4505 | else | |
4506 | size = PCI_CONFIG_SPACE_LEN; | |
4507 | ||
4508 | WARN_ON(adapter->config_space != NULL); | |
4509 | ||
4510 | adapter->config_space = kmalloc(size, GFP_KERNEL); | |
4511 | if (!adapter->config_space) { | |
4512 | DPRINTK(PROBE, ERR, "unable to allocate %d bytes\n", size); | |
4513 | return -ENOMEM; | |
4514 | } | |
4515 | for (i = 0; i < (size / 4); i++) | |
4516 | pci_read_config_dword(dev, i * 4, &adapter->config_space[i]); | |
4517 | return 0; | |
4518 | } | |
4519 | ||
4520 | static void | |
4521 | e1000_pci_restore_state(struct e1000_adapter *adapter) | |
4522 | { | |
4523 | struct pci_dev *dev = adapter->pdev; | |
4524 | int size; | |
4525 | int i; | |
4526 | if (adapter->config_space == NULL) | |
4527 | return; | |
4528 | if (adapter->hw.mac_type >= e1000_82571) | |
4529 | size = PCIE_CONFIG_SPACE_LEN; | |
4530 | else | |
4531 | size = PCI_CONFIG_SPACE_LEN; | |
4532 | for (i = 0; i < (size / 4); i++) | |
4533 | pci_write_config_dword(dev, i * 4, adapter->config_space[i]); | |
4534 | kfree(adapter->config_space); | |
4535 | adapter->config_space = NULL; | |
4536 | return; | |
4537 | } | |
4538 | #endif /* CONFIG_PM */ | |
4539 | ||
1da177e4 | 4540 | static int |
829ca9a3 | 4541 | e1000_suspend(struct pci_dev *pdev, pm_message_t state) |
1da177e4 LT |
4542 | { |
4543 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 4544 | struct e1000_adapter *adapter = netdev_priv(netdev); |
b55ccb35 | 4545 | uint32_t ctrl, ctrl_ext, rctl, manc, status; |
1da177e4 | 4546 | uint32_t wufc = adapter->wol; |
240b1710 | 4547 | int retval = 0; |
1da177e4 LT |
4548 | |
4549 | netif_device_detach(netdev); | |
4550 | ||
96838a40 | 4551 | if (netif_running(netdev)) |
1da177e4 LT |
4552 | e1000_down(adapter); |
4553 | ||
2f82665f JB |
4554 | #ifdef CONFIG_PM |
4555 | /* implement our own version of pci_save_state(pdev) because pci | |
4556 | * express adapters have larger 256 byte config spaces */ | |
4557 | retval = e1000_pci_save_state(adapter); | |
4558 | if (retval) | |
4559 | return retval; | |
4560 | #endif | |
4561 | ||
1da177e4 | 4562 | status = E1000_READ_REG(&adapter->hw, STATUS); |
96838a40 | 4563 | if (status & E1000_STATUS_LU) |
1da177e4 LT |
4564 | wufc &= ~E1000_WUFC_LNKC; |
4565 | ||
96838a40 | 4566 | if (wufc) { |
1da177e4 LT |
4567 | e1000_setup_rctl(adapter); |
4568 | e1000_set_multi(netdev); | |
4569 | ||
4570 | /* turn on all-multi mode if wake on multicast is enabled */ | |
96838a40 | 4571 | if (adapter->wol & E1000_WUFC_MC) { |
1da177e4 LT |
4572 | rctl = E1000_READ_REG(&adapter->hw, RCTL); |
4573 | rctl |= E1000_RCTL_MPE; | |
4574 | E1000_WRITE_REG(&adapter->hw, RCTL, rctl); | |
4575 | } | |
4576 | ||
96838a40 | 4577 | if (adapter->hw.mac_type >= e1000_82540) { |
1da177e4 LT |
4578 | ctrl = E1000_READ_REG(&adapter->hw, CTRL); |
4579 | /* advertise wake from D3Cold */ | |
4580 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
4581 | /* phy power management enable */ | |
4582 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
4583 | ctrl |= E1000_CTRL_ADVD3WUC | | |
4584 | E1000_CTRL_EN_PHY_PWR_MGMT; | |
4585 | E1000_WRITE_REG(&adapter->hw, CTRL, ctrl); | |
4586 | } | |
4587 | ||
96838a40 | 4588 | if (adapter->hw.media_type == e1000_media_type_fiber || |
1da177e4 LT |
4589 | adapter->hw.media_type == e1000_media_type_internal_serdes) { |
4590 | /* keep the laser running in D3 */ | |
4591 | ctrl_ext = E1000_READ_REG(&adapter->hw, CTRL_EXT); | |
4592 | ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; | |
4593 | E1000_WRITE_REG(&adapter->hw, CTRL_EXT, ctrl_ext); | |
4594 | } | |
4595 | ||
2d7edb92 MC |
4596 | /* Allow time for pending master requests to run */ |
4597 | e1000_disable_pciex_master(&adapter->hw); | |
4598 | ||
1da177e4 LT |
4599 | E1000_WRITE_REG(&adapter->hw, WUC, E1000_WUC_PME_EN); |
4600 | E1000_WRITE_REG(&adapter->hw, WUFC, wufc); | |
240b1710 JK |
4601 | retval = pci_enable_wake(pdev, PCI_D3hot, 1); |
4602 | if (retval) | |
4603 | DPRINTK(PROBE, ERR, "Error enabling D3 wake\n"); | |
4604 | retval = pci_enable_wake(pdev, PCI_D3cold, 1); | |
4605 | if (retval) | |
4606 | DPRINTK(PROBE, ERR, "Error enabling D3 cold wake\n"); | |
1da177e4 LT |
4607 | } else { |
4608 | E1000_WRITE_REG(&adapter->hw, WUC, 0); | |
4609 | E1000_WRITE_REG(&adapter->hw, WUFC, 0); | |
240b1710 JK |
4610 | retval = pci_enable_wake(pdev, PCI_D3hot, 0); |
4611 | if (retval) | |
4612 | DPRINTK(PROBE, ERR, "Error enabling D3 wake\n"); | |
4613 | retval = pci_enable_wake(pdev, PCI_D3cold, 0); /* 4 == D3 cold */ | |
4614 | if (retval) | |
4615 | DPRINTK(PROBE, ERR, "Error enabling D3 cold wake\n"); | |
1da177e4 LT |
4616 | } |
4617 | ||
96838a40 | 4618 | if (adapter->hw.mac_type >= e1000_82540 && |
1da177e4 LT |
4619 | adapter->hw.media_type == e1000_media_type_copper) { |
4620 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
96838a40 | 4621 | if (manc & E1000_MANC_SMBUS_EN) { |
1da177e4 LT |
4622 | manc |= E1000_MANC_ARP_EN; |
4623 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
240b1710 JK |
4624 | retval = pci_enable_wake(pdev, PCI_D3hot, 1); |
4625 | if (retval) | |
4626 | DPRINTK(PROBE, ERR, "Error enabling D3 wake\n"); | |
4627 | retval = pci_enable_wake(pdev, PCI_D3cold, 1); | |
4628 | if (retval) | |
4629 | DPRINTK(PROBE, ERR, "Error enabling D3 cold wake\n"); | |
1da177e4 LT |
4630 | } |
4631 | } | |
4632 | ||
b55ccb35 JK |
4633 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
4634 | * would have already happened in close and is redundant. */ | |
4635 | e1000_release_hw_control(adapter); | |
2d7edb92 | 4636 | |
1da177e4 | 4637 | pci_disable_device(pdev); |
240b1710 JK |
4638 | |
4639 | retval = pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
4640 | if (retval) | |
4641 | DPRINTK(PROBE, ERR, "Error in setting power state\n"); | |
1da177e4 LT |
4642 | |
4643 | return 0; | |
4644 | } | |
4645 | ||
2f82665f | 4646 | #ifdef CONFIG_PM |
1da177e4 LT |
4647 | static int |
4648 | e1000_resume(struct pci_dev *pdev) | |
4649 | { | |
4650 | struct net_device *netdev = pci_get_drvdata(pdev); | |
60490fe0 | 4651 | struct e1000_adapter *adapter = netdev_priv(netdev); |
240b1710 | 4652 | int retval; |
b55ccb35 | 4653 | uint32_t manc, ret_val; |
1da177e4 | 4654 | |
240b1710 JK |
4655 | retval = pci_set_power_state(pdev, PCI_D0); |
4656 | if (retval) | |
4657 | DPRINTK(PROBE, ERR, "Error in setting power state\n"); | |
2f82665f | 4658 | e1000_pci_restore_state(adapter); |
2b02893e | 4659 | ret_val = pci_enable_device(pdev); |
a4cb847d | 4660 | pci_set_master(pdev); |
1da177e4 | 4661 | |
240b1710 JK |
4662 | retval = pci_enable_wake(pdev, PCI_D3hot, 0); |
4663 | if (retval) | |
4664 | DPRINTK(PROBE, ERR, "Error enabling D3 wake\n"); | |
4665 | retval = pci_enable_wake(pdev, PCI_D3cold, 0); | |
4666 | if (retval) | |
4667 | DPRINTK(PROBE, ERR, "Error enabling D3 cold wake\n"); | |
1da177e4 LT |
4668 | |
4669 | e1000_reset(adapter); | |
4670 | E1000_WRITE_REG(&adapter->hw, WUS, ~0); | |
4671 | ||
96838a40 | 4672 | if (netif_running(netdev)) |
1da177e4 LT |
4673 | e1000_up(adapter); |
4674 | ||
4675 | netif_device_attach(netdev); | |
4676 | ||
96838a40 | 4677 | if (adapter->hw.mac_type >= e1000_82540 && |
1da177e4 LT |
4678 | adapter->hw.media_type == e1000_media_type_copper) { |
4679 | manc = E1000_READ_REG(&adapter->hw, MANC); | |
4680 | manc &= ~(E1000_MANC_ARP_EN); | |
4681 | E1000_WRITE_REG(&adapter->hw, MANC, manc); | |
4682 | } | |
4683 | ||
b55ccb35 JK |
4684 | /* If the controller is 82573 and f/w is AMT, do not set |
4685 | * DRV_LOAD until the interface is up. For all other cases, | |
4686 | * let the f/w know that the h/w is now under the control | |
4687 | * of the driver. */ | |
4688 | if (adapter->hw.mac_type != e1000_82573 || | |
4689 | !e1000_check_mng_mode(&adapter->hw)) | |
4690 | e1000_get_hw_control(adapter); | |
2d7edb92 | 4691 | |
1da177e4 LT |
4692 | return 0; |
4693 | } | |
4694 | #endif | |
1da177e4 LT |
4695 | #ifdef CONFIG_NET_POLL_CONTROLLER |
4696 | /* | |
4697 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
4698 | * without having to re-enable interrupts. It's not called while | |
4699 | * the interrupt routine is executing. | |
4700 | */ | |
4701 | static void | |
2648345f | 4702 | e1000_netpoll(struct net_device *netdev) |
1da177e4 | 4703 | { |
60490fe0 | 4704 | struct e1000_adapter *adapter = netdev_priv(netdev); |
1da177e4 LT |
4705 | disable_irq(adapter->pdev->irq); |
4706 | e1000_intr(adapter->pdev->irq, netdev, NULL); | |
c4cfe567 | 4707 | e1000_clean_tx_irq(adapter, adapter->tx_ring); |
e8da8be1 JK |
4708 | #ifndef CONFIG_E1000_NAPI |
4709 | adapter->clean_rx(adapter, adapter->rx_ring); | |
4710 | #endif | |
1da177e4 LT |
4711 | enable_irq(adapter->pdev->irq); |
4712 | } | |
4713 | #endif | |
4714 | ||
4715 | /* e1000_main.c */ |