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9d5c8243 AK |
1 | /******************************************************************************* |
2 | ||
3 | Intel(R) Gigabit Ethernet Linux driver | |
86d5d38f | 4 | Copyright(c) 2007-2009 Intel Corporation. |
9d5c8243 AK |
5 | |
6 | This program is free software; you can redistribute it and/or modify it | |
7 | under the terms and conditions of the GNU General Public License, | |
8 | version 2, as published by the Free Software Foundation. | |
9 | ||
10 | This program is distributed in the hope it will be useful, but WITHOUT | |
11 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
13 | more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License along with | |
16 | this program; if not, write to the Free Software Foundation, Inc., | |
17 | 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | ||
19 | The full GNU General Public License is included in this distribution in | |
20 | the file called "COPYING". | |
21 | ||
22 | Contact Information: | |
23 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> | |
24 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
25 | ||
26 | *******************************************************************************/ | |
27 | ||
28 | #include <linux/module.h> | |
29 | #include <linux/types.h> | |
30 | #include <linux/init.h> | |
31 | #include <linux/vmalloc.h> | |
32 | #include <linux/pagemap.h> | |
33 | #include <linux/netdevice.h> | |
9d5c8243 | 34 | #include <linux/ipv6.h> |
5a0e3ad6 | 35 | #include <linux/slab.h> |
9d5c8243 AK |
36 | #include <net/checksum.h> |
37 | #include <net/ip6_checksum.h> | |
c6cb090b | 38 | #include <linux/net_tstamp.h> |
9d5c8243 AK |
39 | #include <linux/mii.h> |
40 | #include <linux/ethtool.h> | |
41 | #include <linux/if_vlan.h> | |
42 | #include <linux/pci.h> | |
c54106bb | 43 | #include <linux/pci-aspm.h> |
9d5c8243 AK |
44 | #include <linux/delay.h> |
45 | #include <linux/interrupt.h> | |
46 | #include <linux/if_ether.h> | |
40a914fa | 47 | #include <linux/aer.h> |
70c71606 | 48 | #include <linux/prefetch.h> |
421e02f0 | 49 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
50 | #include <linux/dca.h> |
51 | #endif | |
9d5c8243 AK |
52 | #include "igb.h" |
53 | ||
0d1fe82d CW |
54 | #define MAJ 3 |
55 | #define MIN 0 | |
56 | #define BUILD 6 | |
0d1fe82d | 57 | #define DRV_VERSION __stringify(MAJ) "." __stringify(MIN) "." \ |
929dd047 | 58 | __stringify(BUILD) "-k" |
9d5c8243 AK |
59 | char igb_driver_name[] = "igb"; |
60 | char igb_driver_version[] = DRV_VERSION; | |
61 | static const char igb_driver_string[] = | |
62 | "Intel(R) Gigabit Ethernet Network Driver"; | |
4c4b42cb | 63 | static const char igb_copyright[] = "Copyright (c) 2007-2011 Intel Corporation."; |
9d5c8243 | 64 | |
9d5c8243 AK |
65 | static const struct e1000_info *igb_info_tbl[] = { |
66 | [board_82575] = &e1000_82575_info, | |
67 | }; | |
68 | ||
a3aa1884 | 69 | static DEFINE_PCI_DEVICE_TABLE(igb_pci_tbl) = { |
d2ba2ed8 AD |
70 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_COPPER), board_82575 }, |
71 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_FIBER), board_82575 }, | |
72 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_SERDES), board_82575 }, | |
73 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_SGMII), board_82575 }, | |
55cac248 AD |
74 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_COPPER), board_82575 }, |
75 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_FIBER), board_82575 }, | |
6493d24f | 76 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_QUAD_FIBER), board_82575 }, |
55cac248 AD |
77 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_SERDES), board_82575 }, |
78 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_SGMII), board_82575 }, | |
79 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_COPPER_DUAL), board_82575 }, | |
308fb39a JG |
80 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_DH89XXCC_SGMII), board_82575 }, |
81 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_DH89XXCC_SERDES), board_82575 }, | |
1b5dda33 GJ |
82 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_DH89XXCC_BACKPLANE), board_82575 }, |
83 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_DH89XXCC_SFP), board_82575 }, | |
2d064c06 | 84 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576), board_82575 }, |
9eb2341d | 85 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_NS), board_82575 }, |
747d49ba | 86 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_NS_SERDES), board_82575 }, |
2d064c06 AD |
87 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_FIBER), board_82575 }, |
88 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_SERDES), board_82575 }, | |
4703bf73 | 89 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_SERDES_QUAD), board_82575 }, |
b894fa26 | 90 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_QUAD_COPPER_ET2), board_82575 }, |
c8ea5ea9 | 91 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_QUAD_COPPER), board_82575 }, |
9d5c8243 AK |
92 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_COPPER), board_82575 }, |
93 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_FIBER_SERDES), board_82575 }, | |
94 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575GB_QUAD_COPPER), board_82575 }, | |
95 | /* required last entry */ | |
96 | {0, } | |
97 | }; | |
98 | ||
99 | MODULE_DEVICE_TABLE(pci, igb_pci_tbl); | |
100 | ||
101 | void igb_reset(struct igb_adapter *); | |
102 | static int igb_setup_all_tx_resources(struct igb_adapter *); | |
103 | static int igb_setup_all_rx_resources(struct igb_adapter *); | |
104 | static void igb_free_all_tx_resources(struct igb_adapter *); | |
105 | static void igb_free_all_rx_resources(struct igb_adapter *); | |
06cf2666 | 106 | static void igb_setup_mrqc(struct igb_adapter *); |
9d5c8243 AK |
107 | static int igb_probe(struct pci_dev *, const struct pci_device_id *); |
108 | static void __devexit igb_remove(struct pci_dev *pdev); | |
673b8b70 | 109 | static void igb_init_hw_timer(struct igb_adapter *adapter); |
9d5c8243 AK |
110 | static int igb_sw_init(struct igb_adapter *); |
111 | static int igb_open(struct net_device *); | |
112 | static int igb_close(struct net_device *); | |
113 | static void igb_configure_tx(struct igb_adapter *); | |
114 | static void igb_configure_rx(struct igb_adapter *); | |
9d5c8243 AK |
115 | static void igb_clean_all_tx_rings(struct igb_adapter *); |
116 | static void igb_clean_all_rx_rings(struct igb_adapter *); | |
3b644cf6 MW |
117 | static void igb_clean_tx_ring(struct igb_ring *); |
118 | static void igb_clean_rx_ring(struct igb_ring *); | |
ff41f8dc | 119 | static void igb_set_rx_mode(struct net_device *); |
9d5c8243 AK |
120 | static void igb_update_phy_info(unsigned long); |
121 | static void igb_watchdog(unsigned long); | |
122 | static void igb_watchdog_task(struct work_struct *); | |
b1a436c3 | 123 | static netdev_tx_t igb_xmit_frame_adv(struct sk_buff *skb, struct net_device *); |
12dcd86b ED |
124 | static struct rtnl_link_stats64 *igb_get_stats64(struct net_device *dev, |
125 | struct rtnl_link_stats64 *stats); | |
9d5c8243 AK |
126 | static int igb_change_mtu(struct net_device *, int); |
127 | static int igb_set_mac(struct net_device *, void *); | |
68d480c4 | 128 | static void igb_set_uta(struct igb_adapter *adapter); |
9d5c8243 AK |
129 | static irqreturn_t igb_intr(int irq, void *); |
130 | static irqreturn_t igb_intr_msi(int irq, void *); | |
131 | static irqreturn_t igb_msix_other(int irq, void *); | |
047e0030 | 132 | static irqreturn_t igb_msix_ring(int irq, void *); |
421e02f0 | 133 | #ifdef CONFIG_IGB_DCA |
047e0030 | 134 | static void igb_update_dca(struct igb_q_vector *); |
fe4506b6 | 135 | static void igb_setup_dca(struct igb_adapter *); |
421e02f0 | 136 | #endif /* CONFIG_IGB_DCA */ |
047e0030 | 137 | static bool igb_clean_tx_irq(struct igb_q_vector *); |
661086df | 138 | static int igb_poll(struct napi_struct *, int); |
047e0030 | 139 | static bool igb_clean_rx_irq_adv(struct igb_q_vector *, int *, int); |
9d5c8243 AK |
140 | static int igb_ioctl(struct net_device *, struct ifreq *, int cmd); |
141 | static void igb_tx_timeout(struct net_device *); | |
142 | static void igb_reset_task(struct work_struct *); | |
143 | static void igb_vlan_rx_register(struct net_device *, struct vlan_group *); | |
144 | static void igb_vlan_rx_add_vid(struct net_device *, u16); | |
145 | static void igb_vlan_rx_kill_vid(struct net_device *, u16); | |
146 | static void igb_restore_vlan(struct igb_adapter *); | |
26ad9178 | 147 | static void igb_rar_set_qsel(struct igb_adapter *, u8 *, u32 , u8); |
4ae196df AD |
148 | static void igb_ping_all_vfs(struct igb_adapter *); |
149 | static void igb_msg_task(struct igb_adapter *); | |
4ae196df | 150 | static void igb_vmm_control(struct igb_adapter *); |
f2ca0dbe | 151 | static int igb_set_vf_mac(struct igb_adapter *, int, unsigned char *); |
4ae196df | 152 | static void igb_restore_vf_multicasts(struct igb_adapter *adapter); |
8151d294 WM |
153 | static int igb_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac); |
154 | static int igb_ndo_set_vf_vlan(struct net_device *netdev, | |
155 | int vf, u16 vlan, u8 qos); | |
156 | static int igb_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate); | |
157 | static int igb_ndo_get_vf_config(struct net_device *netdev, int vf, | |
158 | struct ifla_vf_info *ivi); | |
17dc566c | 159 | static void igb_check_vf_rate_limit(struct igb_adapter *); |
9d5c8243 | 160 | |
9d5c8243 | 161 | #ifdef CONFIG_PM |
3fe7c4c9 | 162 | static int igb_suspend(struct pci_dev *, pm_message_t); |
9d5c8243 AK |
163 | static int igb_resume(struct pci_dev *); |
164 | #endif | |
165 | static void igb_shutdown(struct pci_dev *); | |
421e02f0 | 166 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
167 | static int igb_notify_dca(struct notifier_block *, unsigned long, void *); |
168 | static struct notifier_block dca_notifier = { | |
169 | .notifier_call = igb_notify_dca, | |
170 | .next = NULL, | |
171 | .priority = 0 | |
172 | }; | |
173 | #endif | |
9d5c8243 AK |
174 | #ifdef CONFIG_NET_POLL_CONTROLLER |
175 | /* for netdump / net console */ | |
176 | static void igb_netpoll(struct net_device *); | |
177 | #endif | |
37680117 | 178 | #ifdef CONFIG_PCI_IOV |
2a3abf6d AD |
179 | static unsigned int max_vfs = 0; |
180 | module_param(max_vfs, uint, 0); | |
181 | MODULE_PARM_DESC(max_vfs, "Maximum number of virtual functions to allocate " | |
182 | "per physical function"); | |
183 | #endif /* CONFIG_PCI_IOV */ | |
184 | ||
9d5c8243 AK |
185 | static pci_ers_result_t igb_io_error_detected(struct pci_dev *, |
186 | pci_channel_state_t); | |
187 | static pci_ers_result_t igb_io_slot_reset(struct pci_dev *); | |
188 | static void igb_io_resume(struct pci_dev *); | |
189 | ||
190 | static struct pci_error_handlers igb_err_handler = { | |
191 | .error_detected = igb_io_error_detected, | |
192 | .slot_reset = igb_io_slot_reset, | |
193 | .resume = igb_io_resume, | |
194 | }; | |
195 | ||
196 | ||
197 | static struct pci_driver igb_driver = { | |
198 | .name = igb_driver_name, | |
199 | .id_table = igb_pci_tbl, | |
200 | .probe = igb_probe, | |
201 | .remove = __devexit_p(igb_remove), | |
202 | #ifdef CONFIG_PM | |
25985edc | 203 | /* Power Management Hooks */ |
9d5c8243 AK |
204 | .suspend = igb_suspend, |
205 | .resume = igb_resume, | |
206 | #endif | |
207 | .shutdown = igb_shutdown, | |
208 | .err_handler = &igb_err_handler | |
209 | }; | |
210 | ||
211 | MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>"); | |
212 | MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver"); | |
213 | MODULE_LICENSE("GPL"); | |
214 | MODULE_VERSION(DRV_VERSION); | |
215 | ||
c97ec42a TI |
216 | struct igb_reg_info { |
217 | u32 ofs; | |
218 | char *name; | |
219 | }; | |
220 | ||
221 | static const struct igb_reg_info igb_reg_info_tbl[] = { | |
222 | ||
223 | /* General Registers */ | |
224 | {E1000_CTRL, "CTRL"}, | |
225 | {E1000_STATUS, "STATUS"}, | |
226 | {E1000_CTRL_EXT, "CTRL_EXT"}, | |
227 | ||
228 | /* Interrupt Registers */ | |
229 | {E1000_ICR, "ICR"}, | |
230 | ||
231 | /* RX Registers */ | |
232 | {E1000_RCTL, "RCTL"}, | |
233 | {E1000_RDLEN(0), "RDLEN"}, | |
234 | {E1000_RDH(0), "RDH"}, | |
235 | {E1000_RDT(0), "RDT"}, | |
236 | {E1000_RXDCTL(0), "RXDCTL"}, | |
237 | {E1000_RDBAL(0), "RDBAL"}, | |
238 | {E1000_RDBAH(0), "RDBAH"}, | |
239 | ||
240 | /* TX Registers */ | |
241 | {E1000_TCTL, "TCTL"}, | |
242 | {E1000_TDBAL(0), "TDBAL"}, | |
243 | {E1000_TDBAH(0), "TDBAH"}, | |
244 | {E1000_TDLEN(0), "TDLEN"}, | |
245 | {E1000_TDH(0), "TDH"}, | |
246 | {E1000_TDT(0), "TDT"}, | |
247 | {E1000_TXDCTL(0), "TXDCTL"}, | |
248 | {E1000_TDFH, "TDFH"}, | |
249 | {E1000_TDFT, "TDFT"}, | |
250 | {E1000_TDFHS, "TDFHS"}, | |
251 | {E1000_TDFPC, "TDFPC"}, | |
252 | ||
253 | /* List Terminator */ | |
254 | {} | |
255 | }; | |
256 | ||
257 | /* | |
258 | * igb_regdump - register printout routine | |
259 | */ | |
260 | static void igb_regdump(struct e1000_hw *hw, struct igb_reg_info *reginfo) | |
261 | { | |
262 | int n = 0; | |
263 | char rname[16]; | |
264 | u32 regs[8]; | |
265 | ||
266 | switch (reginfo->ofs) { | |
267 | case E1000_RDLEN(0): | |
268 | for (n = 0; n < 4; n++) | |
269 | regs[n] = rd32(E1000_RDLEN(n)); | |
270 | break; | |
271 | case E1000_RDH(0): | |
272 | for (n = 0; n < 4; n++) | |
273 | regs[n] = rd32(E1000_RDH(n)); | |
274 | break; | |
275 | case E1000_RDT(0): | |
276 | for (n = 0; n < 4; n++) | |
277 | regs[n] = rd32(E1000_RDT(n)); | |
278 | break; | |
279 | case E1000_RXDCTL(0): | |
280 | for (n = 0; n < 4; n++) | |
281 | regs[n] = rd32(E1000_RXDCTL(n)); | |
282 | break; | |
283 | case E1000_RDBAL(0): | |
284 | for (n = 0; n < 4; n++) | |
285 | regs[n] = rd32(E1000_RDBAL(n)); | |
286 | break; | |
287 | case E1000_RDBAH(0): | |
288 | for (n = 0; n < 4; n++) | |
289 | regs[n] = rd32(E1000_RDBAH(n)); | |
290 | break; | |
291 | case E1000_TDBAL(0): | |
292 | for (n = 0; n < 4; n++) | |
293 | regs[n] = rd32(E1000_RDBAL(n)); | |
294 | break; | |
295 | case E1000_TDBAH(0): | |
296 | for (n = 0; n < 4; n++) | |
297 | regs[n] = rd32(E1000_TDBAH(n)); | |
298 | break; | |
299 | case E1000_TDLEN(0): | |
300 | for (n = 0; n < 4; n++) | |
301 | regs[n] = rd32(E1000_TDLEN(n)); | |
302 | break; | |
303 | case E1000_TDH(0): | |
304 | for (n = 0; n < 4; n++) | |
305 | regs[n] = rd32(E1000_TDH(n)); | |
306 | break; | |
307 | case E1000_TDT(0): | |
308 | for (n = 0; n < 4; n++) | |
309 | regs[n] = rd32(E1000_TDT(n)); | |
310 | break; | |
311 | case E1000_TXDCTL(0): | |
312 | for (n = 0; n < 4; n++) | |
313 | regs[n] = rd32(E1000_TXDCTL(n)); | |
314 | break; | |
315 | default: | |
316 | printk(KERN_INFO "%-15s %08x\n", | |
317 | reginfo->name, rd32(reginfo->ofs)); | |
318 | return; | |
319 | } | |
320 | ||
321 | snprintf(rname, 16, "%s%s", reginfo->name, "[0-3]"); | |
322 | printk(KERN_INFO "%-15s ", rname); | |
323 | for (n = 0; n < 4; n++) | |
324 | printk(KERN_CONT "%08x ", regs[n]); | |
325 | printk(KERN_CONT "\n"); | |
326 | } | |
327 | ||
328 | /* | |
329 | * igb_dump - Print registers, tx-rings and rx-rings | |
330 | */ | |
331 | static void igb_dump(struct igb_adapter *adapter) | |
332 | { | |
333 | struct net_device *netdev = adapter->netdev; | |
334 | struct e1000_hw *hw = &adapter->hw; | |
335 | struct igb_reg_info *reginfo; | |
336 | int n = 0; | |
337 | struct igb_ring *tx_ring; | |
338 | union e1000_adv_tx_desc *tx_desc; | |
339 | struct my_u0 { u64 a; u64 b; } *u0; | |
340 | struct igb_buffer *buffer_info; | |
341 | struct igb_ring *rx_ring; | |
342 | union e1000_adv_rx_desc *rx_desc; | |
343 | u32 staterr; | |
344 | int i = 0; | |
345 | ||
346 | if (!netif_msg_hw(adapter)) | |
347 | return; | |
348 | ||
349 | /* Print netdevice Info */ | |
350 | if (netdev) { | |
351 | dev_info(&adapter->pdev->dev, "Net device Info\n"); | |
352 | printk(KERN_INFO "Device Name state " | |
353 | "trans_start last_rx\n"); | |
354 | printk(KERN_INFO "%-15s %016lX %016lX %016lX\n", | |
355 | netdev->name, | |
356 | netdev->state, | |
357 | netdev->trans_start, | |
358 | netdev->last_rx); | |
359 | } | |
360 | ||
361 | /* Print Registers */ | |
362 | dev_info(&adapter->pdev->dev, "Register Dump\n"); | |
363 | printk(KERN_INFO " Register Name Value\n"); | |
364 | for (reginfo = (struct igb_reg_info *)igb_reg_info_tbl; | |
365 | reginfo->name; reginfo++) { | |
366 | igb_regdump(hw, reginfo); | |
367 | } | |
368 | ||
369 | /* Print TX Ring Summary */ | |
370 | if (!netdev || !netif_running(netdev)) | |
371 | goto exit; | |
372 | ||
373 | dev_info(&adapter->pdev->dev, "TX Rings Summary\n"); | |
374 | printk(KERN_INFO "Queue [NTU] [NTC] [bi(ntc)->dma ]" | |
375 | " leng ntw timestamp\n"); | |
376 | for (n = 0; n < adapter->num_tx_queues; n++) { | |
377 | tx_ring = adapter->tx_ring[n]; | |
378 | buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean]; | |
379 | printk(KERN_INFO " %5d %5X %5X %016llX %04X %3X %016llX\n", | |
380 | n, tx_ring->next_to_use, tx_ring->next_to_clean, | |
381 | (u64)buffer_info->dma, | |
382 | buffer_info->length, | |
383 | buffer_info->next_to_watch, | |
384 | (u64)buffer_info->time_stamp); | |
385 | } | |
386 | ||
387 | /* Print TX Rings */ | |
388 | if (!netif_msg_tx_done(adapter)) | |
389 | goto rx_ring_summary; | |
390 | ||
391 | dev_info(&adapter->pdev->dev, "TX Rings Dump\n"); | |
392 | ||
393 | /* Transmit Descriptor Formats | |
394 | * | |
395 | * Advanced Transmit Descriptor | |
396 | * +--------------------------------------------------------------+ | |
397 | * 0 | Buffer Address [63:0] | | |
398 | * +--------------------------------------------------------------+ | |
399 | * 8 | PAYLEN | PORTS |CC|IDX | STA | DCMD |DTYP|MAC|RSV| DTALEN | | |
400 | * +--------------------------------------------------------------+ | |
401 | * 63 46 45 40 39 38 36 35 32 31 24 15 0 | |
402 | */ | |
403 | ||
404 | for (n = 0; n < adapter->num_tx_queues; n++) { | |
405 | tx_ring = adapter->tx_ring[n]; | |
406 | printk(KERN_INFO "------------------------------------\n"); | |
407 | printk(KERN_INFO "TX QUEUE INDEX = %d\n", tx_ring->queue_index); | |
408 | printk(KERN_INFO "------------------------------------\n"); | |
409 | printk(KERN_INFO "T [desc] [address 63:0 ] " | |
410 | "[PlPOCIStDDM Ln] [bi->dma ] " | |
411 | "leng ntw timestamp bi->skb\n"); | |
412 | ||
413 | for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) { | |
414 | tx_desc = E1000_TX_DESC_ADV(*tx_ring, i); | |
415 | buffer_info = &tx_ring->buffer_info[i]; | |
416 | u0 = (struct my_u0 *)tx_desc; | |
417 | printk(KERN_INFO "T [0x%03X] %016llX %016llX %016llX" | |
418 | " %04X %3X %016llX %p", i, | |
419 | le64_to_cpu(u0->a), | |
420 | le64_to_cpu(u0->b), | |
421 | (u64)buffer_info->dma, | |
422 | buffer_info->length, | |
423 | buffer_info->next_to_watch, | |
424 | (u64)buffer_info->time_stamp, | |
425 | buffer_info->skb); | |
426 | if (i == tx_ring->next_to_use && | |
427 | i == tx_ring->next_to_clean) | |
428 | printk(KERN_CONT " NTC/U\n"); | |
429 | else if (i == tx_ring->next_to_use) | |
430 | printk(KERN_CONT " NTU\n"); | |
431 | else if (i == tx_ring->next_to_clean) | |
432 | printk(KERN_CONT " NTC\n"); | |
433 | else | |
434 | printk(KERN_CONT "\n"); | |
435 | ||
436 | if (netif_msg_pktdata(adapter) && buffer_info->dma != 0) | |
437 | print_hex_dump(KERN_INFO, "", | |
438 | DUMP_PREFIX_ADDRESS, | |
439 | 16, 1, phys_to_virt(buffer_info->dma), | |
440 | buffer_info->length, true); | |
441 | } | |
442 | } | |
443 | ||
444 | /* Print RX Rings Summary */ | |
445 | rx_ring_summary: | |
446 | dev_info(&adapter->pdev->dev, "RX Rings Summary\n"); | |
447 | printk(KERN_INFO "Queue [NTU] [NTC]\n"); | |
448 | for (n = 0; n < adapter->num_rx_queues; n++) { | |
449 | rx_ring = adapter->rx_ring[n]; | |
450 | printk(KERN_INFO " %5d %5X %5X\n", n, | |
451 | rx_ring->next_to_use, rx_ring->next_to_clean); | |
452 | } | |
453 | ||
454 | /* Print RX Rings */ | |
455 | if (!netif_msg_rx_status(adapter)) | |
456 | goto exit; | |
457 | ||
458 | dev_info(&adapter->pdev->dev, "RX Rings Dump\n"); | |
459 | ||
460 | /* Advanced Receive Descriptor (Read) Format | |
461 | * 63 1 0 | |
462 | * +-----------------------------------------------------+ | |
463 | * 0 | Packet Buffer Address [63:1] |A0/NSE| | |
464 | * +----------------------------------------------+------+ | |
465 | * 8 | Header Buffer Address [63:1] | DD | | |
466 | * +-----------------------------------------------------+ | |
467 | * | |
468 | * | |
469 | * Advanced Receive Descriptor (Write-Back) Format | |
470 | * | |
471 | * 63 48 47 32 31 30 21 20 17 16 4 3 0 | |
472 | * +------------------------------------------------------+ | |
473 | * 0 | Packet IP |SPH| HDR_LEN | RSV|Packet| RSS | | |
474 | * | Checksum Ident | | | | Type | Type | | |
475 | * +------------------------------------------------------+ | |
476 | * 8 | VLAN Tag | Length | Extended Error | Extended Status | | |
477 | * +------------------------------------------------------+ | |
478 | * 63 48 47 32 31 20 19 0 | |
479 | */ | |
480 | ||
481 | for (n = 0; n < adapter->num_rx_queues; n++) { | |
482 | rx_ring = adapter->rx_ring[n]; | |
483 | printk(KERN_INFO "------------------------------------\n"); | |
484 | printk(KERN_INFO "RX QUEUE INDEX = %d\n", rx_ring->queue_index); | |
485 | printk(KERN_INFO "------------------------------------\n"); | |
486 | printk(KERN_INFO "R [desc] [ PktBuf A0] " | |
487 | "[ HeadBuf DD] [bi->dma ] [bi->skb] " | |
488 | "<-- Adv Rx Read format\n"); | |
489 | printk(KERN_INFO "RWB[desc] [PcsmIpSHl PtRs] " | |
490 | "[vl er S cks ln] ---------------- [bi->skb] " | |
491 | "<-- Adv Rx Write-Back format\n"); | |
492 | ||
493 | for (i = 0; i < rx_ring->count; i++) { | |
494 | buffer_info = &rx_ring->buffer_info[i]; | |
495 | rx_desc = E1000_RX_DESC_ADV(*rx_ring, i); | |
496 | u0 = (struct my_u0 *)rx_desc; | |
497 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
498 | if (staterr & E1000_RXD_STAT_DD) { | |
499 | /* Descriptor Done */ | |
500 | printk(KERN_INFO "RWB[0x%03X] %016llX " | |
501 | "%016llX ---------------- %p", i, | |
502 | le64_to_cpu(u0->a), | |
503 | le64_to_cpu(u0->b), | |
504 | buffer_info->skb); | |
505 | } else { | |
506 | printk(KERN_INFO "R [0x%03X] %016llX " | |
507 | "%016llX %016llX %p", i, | |
508 | le64_to_cpu(u0->a), | |
509 | le64_to_cpu(u0->b), | |
510 | (u64)buffer_info->dma, | |
511 | buffer_info->skb); | |
512 | ||
513 | if (netif_msg_pktdata(adapter)) { | |
514 | print_hex_dump(KERN_INFO, "", | |
515 | DUMP_PREFIX_ADDRESS, | |
516 | 16, 1, | |
517 | phys_to_virt(buffer_info->dma), | |
518 | rx_ring->rx_buffer_len, true); | |
519 | if (rx_ring->rx_buffer_len | |
520 | < IGB_RXBUFFER_1024) | |
521 | print_hex_dump(KERN_INFO, "", | |
522 | DUMP_PREFIX_ADDRESS, | |
523 | 16, 1, | |
524 | phys_to_virt( | |
525 | buffer_info->page_dma + | |
526 | buffer_info->page_offset), | |
527 | PAGE_SIZE/2, true); | |
528 | } | |
529 | } | |
530 | ||
531 | if (i == rx_ring->next_to_use) | |
532 | printk(KERN_CONT " NTU\n"); | |
533 | else if (i == rx_ring->next_to_clean) | |
534 | printk(KERN_CONT " NTC\n"); | |
535 | else | |
536 | printk(KERN_CONT "\n"); | |
537 | ||
538 | } | |
539 | } | |
540 | ||
541 | exit: | |
542 | return; | |
543 | } | |
544 | ||
545 | ||
38c845c7 PO |
546 | /** |
547 | * igb_read_clock - read raw cycle counter (to be used by time counter) | |
548 | */ | |
549 | static cycle_t igb_read_clock(const struct cyclecounter *tc) | |
550 | { | |
551 | struct igb_adapter *adapter = | |
552 | container_of(tc, struct igb_adapter, cycles); | |
553 | struct e1000_hw *hw = &adapter->hw; | |
c5b9bd5e AD |
554 | u64 stamp = 0; |
555 | int shift = 0; | |
38c845c7 | 556 | |
55cac248 AD |
557 | /* |
558 | * The timestamp latches on lowest register read. For the 82580 | |
559 | * the lowest register is SYSTIMR instead of SYSTIML. However we never | |
560 | * adjusted TIMINCA so SYSTIMR will just read as all 0s so ignore it. | |
561 | */ | |
562 | if (hw->mac.type == e1000_82580) { | |
563 | stamp = rd32(E1000_SYSTIMR) >> 8; | |
564 | shift = IGB_82580_TSYNC_SHIFT; | |
565 | } | |
566 | ||
c5b9bd5e AD |
567 | stamp |= (u64)rd32(E1000_SYSTIML) << shift; |
568 | stamp |= (u64)rd32(E1000_SYSTIMH) << (shift + 32); | |
38c845c7 PO |
569 | return stamp; |
570 | } | |
571 | ||
9d5c8243 | 572 | /** |
c041076a | 573 | * igb_get_hw_dev - return device |
9d5c8243 AK |
574 | * used by hardware layer to print debugging information |
575 | **/ | |
c041076a | 576 | struct net_device *igb_get_hw_dev(struct e1000_hw *hw) |
9d5c8243 AK |
577 | { |
578 | struct igb_adapter *adapter = hw->back; | |
c041076a | 579 | return adapter->netdev; |
9d5c8243 | 580 | } |
38c845c7 | 581 | |
9d5c8243 AK |
582 | /** |
583 | * igb_init_module - Driver Registration Routine | |
584 | * | |
585 | * igb_init_module is the first routine called when the driver is | |
586 | * loaded. All it does is register with the PCI subsystem. | |
587 | **/ | |
588 | static int __init igb_init_module(void) | |
589 | { | |
590 | int ret; | |
591 | printk(KERN_INFO "%s - version %s\n", | |
592 | igb_driver_string, igb_driver_version); | |
593 | ||
594 | printk(KERN_INFO "%s\n", igb_copyright); | |
595 | ||
421e02f0 | 596 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
597 | dca_register_notify(&dca_notifier); |
598 | #endif | |
bbd98fe4 | 599 | ret = pci_register_driver(&igb_driver); |
9d5c8243 AK |
600 | return ret; |
601 | } | |
602 | ||
603 | module_init(igb_init_module); | |
604 | ||
605 | /** | |
606 | * igb_exit_module - Driver Exit Cleanup Routine | |
607 | * | |
608 | * igb_exit_module is called just before the driver is removed | |
609 | * from memory. | |
610 | **/ | |
611 | static void __exit igb_exit_module(void) | |
612 | { | |
421e02f0 | 613 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
614 | dca_unregister_notify(&dca_notifier); |
615 | #endif | |
9d5c8243 AK |
616 | pci_unregister_driver(&igb_driver); |
617 | } | |
618 | ||
619 | module_exit(igb_exit_module); | |
620 | ||
26bc19ec AD |
621 | #define Q_IDX_82576(i) (((i & 0x1) << 3) + (i >> 1)) |
622 | /** | |
623 | * igb_cache_ring_register - Descriptor ring to register mapping | |
624 | * @adapter: board private structure to initialize | |
625 | * | |
626 | * Once we know the feature-set enabled for the device, we'll cache | |
627 | * the register offset the descriptor ring is assigned to. | |
628 | **/ | |
629 | static void igb_cache_ring_register(struct igb_adapter *adapter) | |
630 | { | |
ee1b9f06 | 631 | int i = 0, j = 0; |
047e0030 | 632 | u32 rbase_offset = adapter->vfs_allocated_count; |
26bc19ec AD |
633 | |
634 | switch (adapter->hw.mac.type) { | |
635 | case e1000_82576: | |
636 | /* The queues are allocated for virtualization such that VF 0 | |
637 | * is allocated queues 0 and 8, VF 1 queues 1 and 9, etc. | |
638 | * In order to avoid collision we start at the first free queue | |
639 | * and continue consuming queues in the same sequence | |
640 | */ | |
ee1b9f06 | 641 | if (adapter->vfs_allocated_count) { |
a99955fc | 642 | for (; i < adapter->rss_queues; i++) |
3025a446 AD |
643 | adapter->rx_ring[i]->reg_idx = rbase_offset + |
644 | Q_IDX_82576(i); | |
ee1b9f06 | 645 | } |
26bc19ec | 646 | case e1000_82575: |
55cac248 | 647 | case e1000_82580: |
d2ba2ed8 | 648 | case e1000_i350: |
26bc19ec | 649 | default: |
ee1b9f06 | 650 | for (; i < adapter->num_rx_queues; i++) |
3025a446 | 651 | adapter->rx_ring[i]->reg_idx = rbase_offset + i; |
ee1b9f06 | 652 | for (; j < adapter->num_tx_queues; j++) |
3025a446 | 653 | adapter->tx_ring[j]->reg_idx = rbase_offset + j; |
26bc19ec AD |
654 | break; |
655 | } | |
656 | } | |
657 | ||
047e0030 AD |
658 | static void igb_free_queues(struct igb_adapter *adapter) |
659 | { | |
3025a446 | 660 | int i; |
047e0030 | 661 | |
3025a446 AD |
662 | for (i = 0; i < adapter->num_tx_queues; i++) { |
663 | kfree(adapter->tx_ring[i]); | |
664 | adapter->tx_ring[i] = NULL; | |
665 | } | |
666 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
667 | kfree(adapter->rx_ring[i]); | |
668 | adapter->rx_ring[i] = NULL; | |
669 | } | |
047e0030 AD |
670 | adapter->num_rx_queues = 0; |
671 | adapter->num_tx_queues = 0; | |
672 | } | |
673 | ||
9d5c8243 AK |
674 | /** |
675 | * igb_alloc_queues - Allocate memory for all rings | |
676 | * @adapter: board private structure to initialize | |
677 | * | |
678 | * We allocate one ring per queue at run-time since we don't know the | |
679 | * number of queues at compile-time. | |
680 | **/ | |
681 | static int igb_alloc_queues(struct igb_adapter *adapter) | |
682 | { | |
3025a446 | 683 | struct igb_ring *ring; |
9d5c8243 AK |
684 | int i; |
685 | ||
661086df | 686 | for (i = 0; i < adapter->num_tx_queues; i++) { |
3025a446 AD |
687 | ring = kzalloc(sizeof(struct igb_ring), GFP_KERNEL); |
688 | if (!ring) | |
689 | goto err; | |
68fd9910 | 690 | ring->count = adapter->tx_ring_count; |
661086df | 691 | ring->queue_index = i; |
59d71989 | 692 | ring->dev = &adapter->pdev->dev; |
e694e964 | 693 | ring->netdev = adapter->netdev; |
85ad76b2 AD |
694 | /* For 82575, context index must be unique per ring. */ |
695 | if (adapter->hw.mac.type == e1000_82575) | |
696 | ring->flags = IGB_RING_FLAG_TX_CTX_IDX; | |
3025a446 | 697 | adapter->tx_ring[i] = ring; |
661086df | 698 | } |
85ad76b2 | 699 | |
9d5c8243 | 700 | for (i = 0; i < adapter->num_rx_queues; i++) { |
3025a446 AD |
701 | ring = kzalloc(sizeof(struct igb_ring), GFP_KERNEL); |
702 | if (!ring) | |
703 | goto err; | |
68fd9910 | 704 | ring->count = adapter->rx_ring_count; |
844290e5 | 705 | ring->queue_index = i; |
59d71989 | 706 | ring->dev = &adapter->pdev->dev; |
e694e964 | 707 | ring->netdev = adapter->netdev; |
4c844851 | 708 | ring->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
85ad76b2 AD |
709 | ring->flags = IGB_RING_FLAG_RX_CSUM; /* enable rx checksum */ |
710 | /* set flag indicating ring supports SCTP checksum offload */ | |
711 | if (adapter->hw.mac.type >= e1000_82576) | |
712 | ring->flags |= IGB_RING_FLAG_RX_SCTP_CSUM; | |
3025a446 | 713 | adapter->rx_ring[i] = ring; |
9d5c8243 | 714 | } |
26bc19ec AD |
715 | |
716 | igb_cache_ring_register(adapter); | |
9d5c8243 | 717 | |
047e0030 | 718 | return 0; |
a88f10ec | 719 | |
047e0030 AD |
720 | err: |
721 | igb_free_queues(adapter); | |
d1a8c9e1 | 722 | |
047e0030 | 723 | return -ENOMEM; |
a88f10ec AD |
724 | } |
725 | ||
9d5c8243 | 726 | #define IGB_N0_QUEUE -1 |
047e0030 | 727 | static void igb_assign_vector(struct igb_q_vector *q_vector, int msix_vector) |
9d5c8243 AK |
728 | { |
729 | u32 msixbm = 0; | |
047e0030 | 730 | struct igb_adapter *adapter = q_vector->adapter; |
9d5c8243 | 731 | struct e1000_hw *hw = &adapter->hw; |
2d064c06 | 732 | u32 ivar, index; |
047e0030 AD |
733 | int rx_queue = IGB_N0_QUEUE; |
734 | int tx_queue = IGB_N0_QUEUE; | |
735 | ||
736 | if (q_vector->rx_ring) | |
737 | rx_queue = q_vector->rx_ring->reg_idx; | |
738 | if (q_vector->tx_ring) | |
739 | tx_queue = q_vector->tx_ring->reg_idx; | |
2d064c06 AD |
740 | |
741 | switch (hw->mac.type) { | |
742 | case e1000_82575: | |
9d5c8243 AK |
743 | /* The 82575 assigns vectors using a bitmask, which matches the |
744 | bitmask for the EICR/EIMS/EIMC registers. To assign one | |
745 | or more queues to a vector, we write the appropriate bits | |
746 | into the MSIXBM register for that vector. */ | |
047e0030 | 747 | if (rx_queue > IGB_N0_QUEUE) |
9d5c8243 | 748 | msixbm = E1000_EICR_RX_QUEUE0 << rx_queue; |
047e0030 | 749 | if (tx_queue > IGB_N0_QUEUE) |
9d5c8243 | 750 | msixbm |= E1000_EICR_TX_QUEUE0 << tx_queue; |
feeb2721 AD |
751 | if (!adapter->msix_entries && msix_vector == 0) |
752 | msixbm |= E1000_EIMS_OTHER; | |
9d5c8243 | 753 | array_wr32(E1000_MSIXBM(0), msix_vector, msixbm); |
047e0030 | 754 | q_vector->eims_value = msixbm; |
2d064c06 AD |
755 | break; |
756 | case e1000_82576: | |
26bc19ec | 757 | /* 82576 uses a table-based method for assigning vectors. |
2d064c06 AD |
758 | Each queue has a single entry in the table to which we write |
759 | a vector number along with a "valid" bit. Sadly, the layout | |
760 | of the table is somewhat counterintuitive. */ | |
761 | if (rx_queue > IGB_N0_QUEUE) { | |
047e0030 | 762 | index = (rx_queue & 0x7); |
2d064c06 | 763 | ivar = array_rd32(E1000_IVAR0, index); |
047e0030 | 764 | if (rx_queue < 8) { |
26bc19ec AD |
765 | /* vector goes into low byte of register */ |
766 | ivar = ivar & 0xFFFFFF00; | |
767 | ivar |= msix_vector | E1000_IVAR_VALID; | |
047e0030 AD |
768 | } else { |
769 | /* vector goes into third byte of register */ | |
770 | ivar = ivar & 0xFF00FFFF; | |
771 | ivar |= (msix_vector | E1000_IVAR_VALID) << 16; | |
2d064c06 | 772 | } |
2d064c06 AD |
773 | array_wr32(E1000_IVAR0, index, ivar); |
774 | } | |
775 | if (tx_queue > IGB_N0_QUEUE) { | |
047e0030 | 776 | index = (tx_queue & 0x7); |
2d064c06 | 777 | ivar = array_rd32(E1000_IVAR0, index); |
047e0030 | 778 | if (tx_queue < 8) { |
26bc19ec AD |
779 | /* vector goes into second byte of register */ |
780 | ivar = ivar & 0xFFFF00FF; | |
781 | ivar |= (msix_vector | E1000_IVAR_VALID) << 8; | |
047e0030 AD |
782 | } else { |
783 | /* vector goes into high byte of register */ | |
784 | ivar = ivar & 0x00FFFFFF; | |
785 | ivar |= (msix_vector | E1000_IVAR_VALID) << 24; | |
2d064c06 | 786 | } |
2d064c06 AD |
787 | array_wr32(E1000_IVAR0, index, ivar); |
788 | } | |
047e0030 | 789 | q_vector->eims_value = 1 << msix_vector; |
2d064c06 | 790 | break; |
55cac248 | 791 | case e1000_82580: |
d2ba2ed8 | 792 | case e1000_i350: |
55cac248 AD |
793 | /* 82580 uses the same table-based approach as 82576 but has fewer |
794 | entries as a result we carry over for queues greater than 4. */ | |
795 | if (rx_queue > IGB_N0_QUEUE) { | |
796 | index = (rx_queue >> 1); | |
797 | ivar = array_rd32(E1000_IVAR0, index); | |
798 | if (rx_queue & 0x1) { | |
799 | /* vector goes into third byte of register */ | |
800 | ivar = ivar & 0xFF00FFFF; | |
801 | ivar |= (msix_vector | E1000_IVAR_VALID) << 16; | |
802 | } else { | |
803 | /* vector goes into low byte of register */ | |
804 | ivar = ivar & 0xFFFFFF00; | |
805 | ivar |= msix_vector | E1000_IVAR_VALID; | |
806 | } | |
807 | array_wr32(E1000_IVAR0, index, ivar); | |
808 | } | |
809 | if (tx_queue > IGB_N0_QUEUE) { | |
810 | index = (tx_queue >> 1); | |
811 | ivar = array_rd32(E1000_IVAR0, index); | |
812 | if (tx_queue & 0x1) { | |
813 | /* vector goes into high byte of register */ | |
814 | ivar = ivar & 0x00FFFFFF; | |
815 | ivar |= (msix_vector | E1000_IVAR_VALID) << 24; | |
816 | } else { | |
817 | /* vector goes into second byte of register */ | |
818 | ivar = ivar & 0xFFFF00FF; | |
819 | ivar |= (msix_vector | E1000_IVAR_VALID) << 8; | |
820 | } | |
821 | array_wr32(E1000_IVAR0, index, ivar); | |
822 | } | |
823 | q_vector->eims_value = 1 << msix_vector; | |
824 | break; | |
2d064c06 AD |
825 | default: |
826 | BUG(); | |
827 | break; | |
828 | } | |
26b39276 AD |
829 | |
830 | /* add q_vector eims value to global eims_enable_mask */ | |
831 | adapter->eims_enable_mask |= q_vector->eims_value; | |
832 | ||
833 | /* configure q_vector to set itr on first interrupt */ | |
834 | q_vector->set_itr = 1; | |
9d5c8243 AK |
835 | } |
836 | ||
837 | /** | |
838 | * igb_configure_msix - Configure MSI-X hardware | |
839 | * | |
840 | * igb_configure_msix sets up the hardware to properly | |
841 | * generate MSI-X interrupts. | |
842 | **/ | |
843 | static void igb_configure_msix(struct igb_adapter *adapter) | |
844 | { | |
845 | u32 tmp; | |
846 | int i, vector = 0; | |
847 | struct e1000_hw *hw = &adapter->hw; | |
848 | ||
849 | adapter->eims_enable_mask = 0; | |
9d5c8243 AK |
850 | |
851 | /* set vector for other causes, i.e. link changes */ | |
2d064c06 AD |
852 | switch (hw->mac.type) { |
853 | case e1000_82575: | |
9d5c8243 AK |
854 | tmp = rd32(E1000_CTRL_EXT); |
855 | /* enable MSI-X PBA support*/ | |
856 | tmp |= E1000_CTRL_EXT_PBA_CLR; | |
857 | ||
858 | /* Auto-Mask interrupts upon ICR read. */ | |
859 | tmp |= E1000_CTRL_EXT_EIAME; | |
860 | tmp |= E1000_CTRL_EXT_IRCA; | |
861 | ||
862 | wr32(E1000_CTRL_EXT, tmp); | |
047e0030 AD |
863 | |
864 | /* enable msix_other interrupt */ | |
865 | array_wr32(E1000_MSIXBM(0), vector++, | |
866 | E1000_EIMS_OTHER); | |
844290e5 | 867 | adapter->eims_other = E1000_EIMS_OTHER; |
9d5c8243 | 868 | |
2d064c06 AD |
869 | break; |
870 | ||
871 | case e1000_82576: | |
55cac248 | 872 | case e1000_82580: |
d2ba2ed8 | 873 | case e1000_i350: |
047e0030 AD |
874 | /* Turn on MSI-X capability first, or our settings |
875 | * won't stick. And it will take days to debug. */ | |
876 | wr32(E1000_GPIE, E1000_GPIE_MSIX_MODE | | |
877 | E1000_GPIE_PBA | E1000_GPIE_EIAME | | |
878 | E1000_GPIE_NSICR); | |
879 | ||
880 | /* enable msix_other interrupt */ | |
881 | adapter->eims_other = 1 << vector; | |
2d064c06 | 882 | tmp = (vector++ | E1000_IVAR_VALID) << 8; |
2d064c06 | 883 | |
047e0030 | 884 | wr32(E1000_IVAR_MISC, tmp); |
2d064c06 AD |
885 | break; |
886 | default: | |
887 | /* do nothing, since nothing else supports MSI-X */ | |
888 | break; | |
889 | } /* switch (hw->mac.type) */ | |
047e0030 AD |
890 | |
891 | adapter->eims_enable_mask |= adapter->eims_other; | |
892 | ||
26b39276 AD |
893 | for (i = 0; i < adapter->num_q_vectors; i++) |
894 | igb_assign_vector(adapter->q_vector[i], vector++); | |
047e0030 | 895 | |
9d5c8243 AK |
896 | wrfl(); |
897 | } | |
898 | ||
899 | /** | |
900 | * igb_request_msix - Initialize MSI-X interrupts | |
901 | * | |
902 | * igb_request_msix allocates MSI-X vectors and requests interrupts from the | |
903 | * kernel. | |
904 | **/ | |
905 | static int igb_request_msix(struct igb_adapter *adapter) | |
906 | { | |
907 | struct net_device *netdev = adapter->netdev; | |
047e0030 | 908 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 AK |
909 | int i, err = 0, vector = 0; |
910 | ||
047e0030 | 911 | err = request_irq(adapter->msix_entries[vector].vector, |
a0607fd3 | 912 | igb_msix_other, 0, netdev->name, adapter); |
047e0030 AD |
913 | if (err) |
914 | goto out; | |
915 | vector++; | |
916 | ||
917 | for (i = 0; i < adapter->num_q_vectors; i++) { | |
918 | struct igb_q_vector *q_vector = adapter->q_vector[i]; | |
919 | ||
920 | q_vector->itr_register = hw->hw_addr + E1000_EITR(vector); | |
921 | ||
922 | if (q_vector->rx_ring && q_vector->tx_ring) | |
923 | sprintf(q_vector->name, "%s-TxRx-%u", netdev->name, | |
924 | q_vector->rx_ring->queue_index); | |
925 | else if (q_vector->tx_ring) | |
926 | sprintf(q_vector->name, "%s-tx-%u", netdev->name, | |
927 | q_vector->tx_ring->queue_index); | |
928 | else if (q_vector->rx_ring) | |
929 | sprintf(q_vector->name, "%s-rx-%u", netdev->name, | |
930 | q_vector->rx_ring->queue_index); | |
9d5c8243 | 931 | else |
047e0030 AD |
932 | sprintf(q_vector->name, "%s-unused", netdev->name); |
933 | ||
9d5c8243 | 934 | err = request_irq(adapter->msix_entries[vector].vector, |
a0607fd3 | 935 | igb_msix_ring, 0, q_vector->name, |
047e0030 | 936 | q_vector); |
9d5c8243 AK |
937 | if (err) |
938 | goto out; | |
9d5c8243 AK |
939 | vector++; |
940 | } | |
941 | ||
9d5c8243 AK |
942 | igb_configure_msix(adapter); |
943 | return 0; | |
944 | out: | |
945 | return err; | |
946 | } | |
947 | ||
948 | static void igb_reset_interrupt_capability(struct igb_adapter *adapter) | |
949 | { | |
950 | if (adapter->msix_entries) { | |
951 | pci_disable_msix(adapter->pdev); | |
952 | kfree(adapter->msix_entries); | |
953 | adapter->msix_entries = NULL; | |
047e0030 | 954 | } else if (adapter->flags & IGB_FLAG_HAS_MSI) { |
9d5c8243 | 955 | pci_disable_msi(adapter->pdev); |
047e0030 | 956 | } |
9d5c8243 AK |
957 | } |
958 | ||
047e0030 AD |
959 | /** |
960 | * igb_free_q_vectors - Free memory allocated for interrupt vectors | |
961 | * @adapter: board private structure to initialize | |
962 | * | |
963 | * This function frees the memory allocated to the q_vectors. In addition if | |
964 | * NAPI is enabled it will delete any references to the NAPI struct prior | |
965 | * to freeing the q_vector. | |
966 | **/ | |
967 | static void igb_free_q_vectors(struct igb_adapter *adapter) | |
968 | { | |
969 | int v_idx; | |
970 | ||
971 | for (v_idx = 0; v_idx < adapter->num_q_vectors; v_idx++) { | |
972 | struct igb_q_vector *q_vector = adapter->q_vector[v_idx]; | |
973 | adapter->q_vector[v_idx] = NULL; | |
fe0592b4 NN |
974 | if (!q_vector) |
975 | continue; | |
047e0030 AD |
976 | netif_napi_del(&q_vector->napi); |
977 | kfree(q_vector); | |
978 | } | |
979 | adapter->num_q_vectors = 0; | |
980 | } | |
981 | ||
982 | /** | |
983 | * igb_clear_interrupt_scheme - reset the device to a state of no interrupts | |
984 | * | |
985 | * This function resets the device so that it has 0 rx queues, tx queues, and | |
986 | * MSI-X interrupts allocated. | |
987 | */ | |
988 | static void igb_clear_interrupt_scheme(struct igb_adapter *adapter) | |
989 | { | |
990 | igb_free_queues(adapter); | |
991 | igb_free_q_vectors(adapter); | |
992 | igb_reset_interrupt_capability(adapter); | |
993 | } | |
9d5c8243 AK |
994 | |
995 | /** | |
996 | * igb_set_interrupt_capability - set MSI or MSI-X if supported | |
997 | * | |
998 | * Attempt to configure interrupts using the best available | |
999 | * capabilities of the hardware and kernel. | |
1000 | **/ | |
21adef3e | 1001 | static int igb_set_interrupt_capability(struct igb_adapter *adapter) |
9d5c8243 AK |
1002 | { |
1003 | int err; | |
1004 | int numvecs, i; | |
1005 | ||
83b7180d | 1006 | /* Number of supported queues. */ |
a99955fc | 1007 | adapter->num_rx_queues = adapter->rss_queues; |
5fa8517f GR |
1008 | if (adapter->vfs_allocated_count) |
1009 | adapter->num_tx_queues = 1; | |
1010 | else | |
1011 | adapter->num_tx_queues = adapter->rss_queues; | |
83b7180d | 1012 | |
047e0030 AD |
1013 | /* start with one vector for every rx queue */ |
1014 | numvecs = adapter->num_rx_queues; | |
1015 | ||
3ad2f3fb | 1016 | /* if tx handler is separate add 1 for every tx queue */ |
a99955fc AD |
1017 | if (!(adapter->flags & IGB_FLAG_QUEUE_PAIRS)) |
1018 | numvecs += adapter->num_tx_queues; | |
047e0030 AD |
1019 | |
1020 | /* store the number of vectors reserved for queues */ | |
1021 | adapter->num_q_vectors = numvecs; | |
1022 | ||
1023 | /* add 1 vector for link status interrupts */ | |
1024 | numvecs++; | |
9d5c8243 AK |
1025 | adapter->msix_entries = kcalloc(numvecs, sizeof(struct msix_entry), |
1026 | GFP_KERNEL); | |
1027 | if (!adapter->msix_entries) | |
1028 | goto msi_only; | |
1029 | ||
1030 | for (i = 0; i < numvecs; i++) | |
1031 | adapter->msix_entries[i].entry = i; | |
1032 | ||
1033 | err = pci_enable_msix(adapter->pdev, | |
1034 | adapter->msix_entries, | |
1035 | numvecs); | |
1036 | if (err == 0) | |
34a20e89 | 1037 | goto out; |
9d5c8243 AK |
1038 | |
1039 | igb_reset_interrupt_capability(adapter); | |
1040 | ||
1041 | /* If we can't do MSI-X, try MSI */ | |
1042 | msi_only: | |
2a3abf6d AD |
1043 | #ifdef CONFIG_PCI_IOV |
1044 | /* disable SR-IOV for non MSI-X configurations */ | |
1045 | if (adapter->vf_data) { | |
1046 | struct e1000_hw *hw = &adapter->hw; | |
1047 | /* disable iov and allow time for transactions to clear */ | |
1048 | pci_disable_sriov(adapter->pdev); | |
1049 | msleep(500); | |
1050 | ||
1051 | kfree(adapter->vf_data); | |
1052 | adapter->vf_data = NULL; | |
1053 | wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ); | |
1054 | msleep(100); | |
1055 | dev_info(&adapter->pdev->dev, "IOV Disabled\n"); | |
1056 | } | |
1057 | #endif | |
4fc82adf | 1058 | adapter->vfs_allocated_count = 0; |
a99955fc | 1059 | adapter->rss_queues = 1; |
4fc82adf | 1060 | adapter->flags |= IGB_FLAG_QUEUE_PAIRS; |
9d5c8243 | 1061 | adapter->num_rx_queues = 1; |
661086df | 1062 | adapter->num_tx_queues = 1; |
047e0030 | 1063 | adapter->num_q_vectors = 1; |
9d5c8243 | 1064 | if (!pci_enable_msi(adapter->pdev)) |
7dfc16fa | 1065 | adapter->flags |= IGB_FLAG_HAS_MSI; |
34a20e89 | 1066 | out: |
21adef3e BH |
1067 | /* Notify the stack of the (possibly) reduced queue counts. */ |
1068 | netif_set_real_num_tx_queues(adapter->netdev, adapter->num_tx_queues); | |
1069 | return netif_set_real_num_rx_queues(adapter->netdev, | |
1070 | adapter->num_rx_queues); | |
9d5c8243 AK |
1071 | } |
1072 | ||
047e0030 AD |
1073 | /** |
1074 | * igb_alloc_q_vectors - Allocate memory for interrupt vectors | |
1075 | * @adapter: board private structure to initialize | |
1076 | * | |
1077 | * We allocate one q_vector per queue interrupt. If allocation fails we | |
1078 | * return -ENOMEM. | |
1079 | **/ | |
1080 | static int igb_alloc_q_vectors(struct igb_adapter *adapter) | |
1081 | { | |
1082 | struct igb_q_vector *q_vector; | |
1083 | struct e1000_hw *hw = &adapter->hw; | |
1084 | int v_idx; | |
1085 | ||
1086 | for (v_idx = 0; v_idx < adapter->num_q_vectors; v_idx++) { | |
1087 | q_vector = kzalloc(sizeof(struct igb_q_vector), GFP_KERNEL); | |
1088 | if (!q_vector) | |
1089 | goto err_out; | |
1090 | q_vector->adapter = adapter; | |
047e0030 AD |
1091 | q_vector->itr_register = hw->hw_addr + E1000_EITR(0); |
1092 | q_vector->itr_val = IGB_START_ITR; | |
047e0030 AD |
1093 | netif_napi_add(adapter->netdev, &q_vector->napi, igb_poll, 64); |
1094 | adapter->q_vector[v_idx] = q_vector; | |
1095 | } | |
1096 | return 0; | |
1097 | ||
1098 | err_out: | |
fe0592b4 | 1099 | igb_free_q_vectors(adapter); |
047e0030 AD |
1100 | return -ENOMEM; |
1101 | } | |
1102 | ||
1103 | static void igb_map_rx_ring_to_vector(struct igb_adapter *adapter, | |
1104 | int ring_idx, int v_idx) | |
1105 | { | |
3025a446 | 1106 | struct igb_q_vector *q_vector = adapter->q_vector[v_idx]; |
047e0030 | 1107 | |
3025a446 | 1108 | q_vector->rx_ring = adapter->rx_ring[ring_idx]; |
047e0030 | 1109 | q_vector->rx_ring->q_vector = q_vector; |
4fc82adf AD |
1110 | q_vector->itr_val = adapter->rx_itr_setting; |
1111 | if (q_vector->itr_val && q_vector->itr_val <= 3) | |
1112 | q_vector->itr_val = IGB_START_ITR; | |
047e0030 AD |
1113 | } |
1114 | ||
1115 | static void igb_map_tx_ring_to_vector(struct igb_adapter *adapter, | |
1116 | int ring_idx, int v_idx) | |
1117 | { | |
3025a446 | 1118 | struct igb_q_vector *q_vector = adapter->q_vector[v_idx]; |
047e0030 | 1119 | |
3025a446 | 1120 | q_vector->tx_ring = adapter->tx_ring[ring_idx]; |
047e0030 | 1121 | q_vector->tx_ring->q_vector = q_vector; |
4fc82adf AD |
1122 | q_vector->itr_val = adapter->tx_itr_setting; |
1123 | if (q_vector->itr_val && q_vector->itr_val <= 3) | |
1124 | q_vector->itr_val = IGB_START_ITR; | |
047e0030 AD |
1125 | } |
1126 | ||
1127 | /** | |
1128 | * igb_map_ring_to_vector - maps allocated queues to vectors | |
1129 | * | |
1130 | * This function maps the recently allocated queues to vectors. | |
1131 | **/ | |
1132 | static int igb_map_ring_to_vector(struct igb_adapter *adapter) | |
1133 | { | |
1134 | int i; | |
1135 | int v_idx = 0; | |
1136 | ||
1137 | if ((adapter->num_q_vectors < adapter->num_rx_queues) || | |
1138 | (adapter->num_q_vectors < adapter->num_tx_queues)) | |
1139 | return -ENOMEM; | |
1140 | ||
1141 | if (adapter->num_q_vectors >= | |
1142 | (adapter->num_rx_queues + adapter->num_tx_queues)) { | |
1143 | for (i = 0; i < adapter->num_rx_queues; i++) | |
1144 | igb_map_rx_ring_to_vector(adapter, i, v_idx++); | |
1145 | for (i = 0; i < adapter->num_tx_queues; i++) | |
1146 | igb_map_tx_ring_to_vector(adapter, i, v_idx++); | |
1147 | } else { | |
1148 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1149 | if (i < adapter->num_tx_queues) | |
1150 | igb_map_tx_ring_to_vector(adapter, i, v_idx); | |
1151 | igb_map_rx_ring_to_vector(adapter, i, v_idx++); | |
1152 | } | |
1153 | for (; i < adapter->num_tx_queues; i++) | |
1154 | igb_map_tx_ring_to_vector(adapter, i, v_idx++); | |
1155 | } | |
1156 | return 0; | |
1157 | } | |
1158 | ||
1159 | /** | |
1160 | * igb_init_interrupt_scheme - initialize interrupts, allocate queues/vectors | |
1161 | * | |
1162 | * This function initializes the interrupts and allocates all of the queues. | |
1163 | **/ | |
1164 | static int igb_init_interrupt_scheme(struct igb_adapter *adapter) | |
1165 | { | |
1166 | struct pci_dev *pdev = adapter->pdev; | |
1167 | int err; | |
1168 | ||
21adef3e BH |
1169 | err = igb_set_interrupt_capability(adapter); |
1170 | if (err) | |
1171 | return err; | |
047e0030 AD |
1172 | |
1173 | err = igb_alloc_q_vectors(adapter); | |
1174 | if (err) { | |
1175 | dev_err(&pdev->dev, "Unable to allocate memory for vectors\n"); | |
1176 | goto err_alloc_q_vectors; | |
1177 | } | |
1178 | ||
1179 | err = igb_alloc_queues(adapter); | |
1180 | if (err) { | |
1181 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); | |
1182 | goto err_alloc_queues; | |
1183 | } | |
1184 | ||
1185 | err = igb_map_ring_to_vector(adapter); | |
1186 | if (err) { | |
1187 | dev_err(&pdev->dev, "Invalid q_vector to ring mapping\n"); | |
1188 | goto err_map_queues; | |
1189 | } | |
1190 | ||
1191 | ||
1192 | return 0; | |
1193 | err_map_queues: | |
1194 | igb_free_queues(adapter); | |
1195 | err_alloc_queues: | |
1196 | igb_free_q_vectors(adapter); | |
1197 | err_alloc_q_vectors: | |
1198 | igb_reset_interrupt_capability(adapter); | |
1199 | return err; | |
1200 | } | |
1201 | ||
9d5c8243 AK |
1202 | /** |
1203 | * igb_request_irq - initialize interrupts | |
1204 | * | |
1205 | * Attempts to configure interrupts using the best available | |
1206 | * capabilities of the hardware and kernel. | |
1207 | **/ | |
1208 | static int igb_request_irq(struct igb_adapter *adapter) | |
1209 | { | |
1210 | struct net_device *netdev = adapter->netdev; | |
047e0030 | 1211 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
1212 | int err = 0; |
1213 | ||
1214 | if (adapter->msix_entries) { | |
1215 | err = igb_request_msix(adapter); | |
844290e5 | 1216 | if (!err) |
9d5c8243 | 1217 | goto request_done; |
9d5c8243 | 1218 | /* fall back to MSI */ |
047e0030 | 1219 | igb_clear_interrupt_scheme(adapter); |
9d5c8243 | 1220 | if (!pci_enable_msi(adapter->pdev)) |
7dfc16fa | 1221 | adapter->flags |= IGB_FLAG_HAS_MSI; |
9d5c8243 AK |
1222 | igb_free_all_tx_resources(adapter); |
1223 | igb_free_all_rx_resources(adapter); | |
047e0030 | 1224 | adapter->num_tx_queues = 1; |
9d5c8243 | 1225 | adapter->num_rx_queues = 1; |
047e0030 AD |
1226 | adapter->num_q_vectors = 1; |
1227 | err = igb_alloc_q_vectors(adapter); | |
1228 | if (err) { | |
1229 | dev_err(&pdev->dev, | |
1230 | "Unable to allocate memory for vectors\n"); | |
1231 | goto request_done; | |
1232 | } | |
1233 | err = igb_alloc_queues(adapter); | |
1234 | if (err) { | |
1235 | dev_err(&pdev->dev, | |
1236 | "Unable to allocate memory for queues\n"); | |
1237 | igb_free_q_vectors(adapter); | |
1238 | goto request_done; | |
1239 | } | |
1240 | igb_setup_all_tx_resources(adapter); | |
1241 | igb_setup_all_rx_resources(adapter); | |
844290e5 | 1242 | } else { |
feeb2721 | 1243 | igb_assign_vector(adapter->q_vector[0], 0); |
9d5c8243 | 1244 | } |
844290e5 | 1245 | |
7dfc16fa | 1246 | if (adapter->flags & IGB_FLAG_HAS_MSI) { |
a0607fd3 | 1247 | err = request_irq(adapter->pdev->irq, igb_intr_msi, 0, |
047e0030 | 1248 | netdev->name, adapter); |
9d5c8243 AK |
1249 | if (!err) |
1250 | goto request_done; | |
047e0030 | 1251 | |
9d5c8243 AK |
1252 | /* fall back to legacy interrupts */ |
1253 | igb_reset_interrupt_capability(adapter); | |
7dfc16fa | 1254 | adapter->flags &= ~IGB_FLAG_HAS_MSI; |
9d5c8243 AK |
1255 | } |
1256 | ||
a0607fd3 | 1257 | err = request_irq(adapter->pdev->irq, igb_intr, IRQF_SHARED, |
047e0030 | 1258 | netdev->name, adapter); |
9d5c8243 | 1259 | |
6cb5e577 | 1260 | if (err) |
9d5c8243 AK |
1261 | dev_err(&adapter->pdev->dev, "Error %d getting interrupt\n", |
1262 | err); | |
9d5c8243 AK |
1263 | |
1264 | request_done: | |
1265 | return err; | |
1266 | } | |
1267 | ||
1268 | static void igb_free_irq(struct igb_adapter *adapter) | |
1269 | { | |
9d5c8243 AK |
1270 | if (adapter->msix_entries) { |
1271 | int vector = 0, i; | |
1272 | ||
047e0030 | 1273 | free_irq(adapter->msix_entries[vector++].vector, adapter); |
9d5c8243 | 1274 | |
047e0030 AD |
1275 | for (i = 0; i < adapter->num_q_vectors; i++) { |
1276 | struct igb_q_vector *q_vector = adapter->q_vector[i]; | |
1277 | free_irq(adapter->msix_entries[vector++].vector, | |
1278 | q_vector); | |
1279 | } | |
1280 | } else { | |
1281 | free_irq(adapter->pdev->irq, adapter); | |
9d5c8243 | 1282 | } |
9d5c8243 AK |
1283 | } |
1284 | ||
1285 | /** | |
1286 | * igb_irq_disable - Mask off interrupt generation on the NIC | |
1287 | * @adapter: board private structure | |
1288 | **/ | |
1289 | static void igb_irq_disable(struct igb_adapter *adapter) | |
1290 | { | |
1291 | struct e1000_hw *hw = &adapter->hw; | |
1292 | ||
25568a53 AD |
1293 | /* |
1294 | * we need to be careful when disabling interrupts. The VFs are also | |
1295 | * mapped into these registers and so clearing the bits can cause | |
1296 | * issues on the VF drivers so we only need to clear what we set | |
1297 | */ | |
9d5c8243 | 1298 | if (adapter->msix_entries) { |
2dfd1212 AD |
1299 | u32 regval = rd32(E1000_EIAM); |
1300 | wr32(E1000_EIAM, regval & ~adapter->eims_enable_mask); | |
1301 | wr32(E1000_EIMC, adapter->eims_enable_mask); | |
1302 | regval = rd32(E1000_EIAC); | |
1303 | wr32(E1000_EIAC, regval & ~adapter->eims_enable_mask); | |
9d5c8243 | 1304 | } |
844290e5 PW |
1305 | |
1306 | wr32(E1000_IAM, 0); | |
9d5c8243 AK |
1307 | wr32(E1000_IMC, ~0); |
1308 | wrfl(); | |
81a61859 ET |
1309 | if (adapter->msix_entries) { |
1310 | int i; | |
1311 | for (i = 0; i < adapter->num_q_vectors; i++) | |
1312 | synchronize_irq(adapter->msix_entries[i].vector); | |
1313 | } else { | |
1314 | synchronize_irq(adapter->pdev->irq); | |
1315 | } | |
9d5c8243 AK |
1316 | } |
1317 | ||
1318 | /** | |
1319 | * igb_irq_enable - Enable default interrupt generation settings | |
1320 | * @adapter: board private structure | |
1321 | **/ | |
1322 | static void igb_irq_enable(struct igb_adapter *adapter) | |
1323 | { | |
1324 | struct e1000_hw *hw = &adapter->hw; | |
1325 | ||
1326 | if (adapter->msix_entries) { | |
25568a53 | 1327 | u32 ims = E1000_IMS_LSC | E1000_IMS_DOUTSYNC; |
2dfd1212 AD |
1328 | u32 regval = rd32(E1000_EIAC); |
1329 | wr32(E1000_EIAC, regval | adapter->eims_enable_mask); | |
1330 | regval = rd32(E1000_EIAM); | |
1331 | wr32(E1000_EIAM, regval | adapter->eims_enable_mask); | |
844290e5 | 1332 | wr32(E1000_EIMS, adapter->eims_enable_mask); |
25568a53 | 1333 | if (adapter->vfs_allocated_count) { |
4ae196df | 1334 | wr32(E1000_MBVFIMR, 0xFF); |
25568a53 AD |
1335 | ims |= E1000_IMS_VMMB; |
1336 | } | |
55cac248 AD |
1337 | if (adapter->hw.mac.type == e1000_82580) |
1338 | ims |= E1000_IMS_DRSTA; | |
1339 | ||
25568a53 | 1340 | wr32(E1000_IMS, ims); |
844290e5 | 1341 | } else { |
55cac248 AD |
1342 | wr32(E1000_IMS, IMS_ENABLE_MASK | |
1343 | E1000_IMS_DRSTA); | |
1344 | wr32(E1000_IAM, IMS_ENABLE_MASK | | |
1345 | E1000_IMS_DRSTA); | |
844290e5 | 1346 | } |
9d5c8243 AK |
1347 | } |
1348 | ||
1349 | static void igb_update_mng_vlan(struct igb_adapter *adapter) | |
1350 | { | |
51466239 | 1351 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 AK |
1352 | u16 vid = adapter->hw.mng_cookie.vlan_id; |
1353 | u16 old_vid = adapter->mng_vlan_id; | |
51466239 AD |
1354 | |
1355 | if (hw->mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { | |
1356 | /* add VID to filter table */ | |
1357 | igb_vfta_set(hw, vid, true); | |
1358 | adapter->mng_vlan_id = vid; | |
1359 | } else { | |
1360 | adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; | |
1361 | } | |
1362 | ||
1363 | if ((old_vid != (u16)IGB_MNG_VLAN_NONE) && | |
1364 | (vid != old_vid) && | |
1365 | !vlan_group_get_device(adapter->vlgrp, old_vid)) { | |
1366 | /* remove VID from filter table */ | |
1367 | igb_vfta_set(hw, old_vid, false); | |
9d5c8243 AK |
1368 | } |
1369 | } | |
1370 | ||
1371 | /** | |
1372 | * igb_release_hw_control - release control of the h/w to f/w | |
1373 | * @adapter: address of board private structure | |
1374 | * | |
1375 | * igb_release_hw_control resets CTRL_EXT:DRV_LOAD bit. | |
1376 | * For ASF and Pass Through versions of f/w this means that the | |
1377 | * driver is no longer loaded. | |
1378 | * | |
1379 | **/ | |
1380 | static void igb_release_hw_control(struct igb_adapter *adapter) | |
1381 | { | |
1382 | struct e1000_hw *hw = &adapter->hw; | |
1383 | u32 ctrl_ext; | |
1384 | ||
1385 | /* Let firmware take over control of h/w */ | |
1386 | ctrl_ext = rd32(E1000_CTRL_EXT); | |
1387 | wr32(E1000_CTRL_EXT, | |
1388 | ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); | |
1389 | } | |
1390 | ||
9d5c8243 AK |
1391 | /** |
1392 | * igb_get_hw_control - get control of the h/w from f/w | |
1393 | * @adapter: address of board private structure | |
1394 | * | |
1395 | * igb_get_hw_control sets CTRL_EXT:DRV_LOAD bit. | |
1396 | * For ASF and Pass Through versions of f/w this means that | |
1397 | * the driver is loaded. | |
1398 | * | |
1399 | **/ | |
1400 | static void igb_get_hw_control(struct igb_adapter *adapter) | |
1401 | { | |
1402 | struct e1000_hw *hw = &adapter->hw; | |
1403 | u32 ctrl_ext; | |
1404 | ||
1405 | /* Let firmware know the driver has taken over */ | |
1406 | ctrl_ext = rd32(E1000_CTRL_EXT); | |
1407 | wr32(E1000_CTRL_EXT, | |
1408 | ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); | |
1409 | } | |
1410 | ||
9d5c8243 AK |
1411 | /** |
1412 | * igb_configure - configure the hardware for RX and TX | |
1413 | * @adapter: private board structure | |
1414 | **/ | |
1415 | static void igb_configure(struct igb_adapter *adapter) | |
1416 | { | |
1417 | struct net_device *netdev = adapter->netdev; | |
1418 | int i; | |
1419 | ||
1420 | igb_get_hw_control(adapter); | |
ff41f8dc | 1421 | igb_set_rx_mode(netdev); |
9d5c8243 AK |
1422 | |
1423 | igb_restore_vlan(adapter); | |
9d5c8243 | 1424 | |
85b430b4 | 1425 | igb_setup_tctl(adapter); |
06cf2666 | 1426 | igb_setup_mrqc(adapter); |
9d5c8243 | 1427 | igb_setup_rctl(adapter); |
85b430b4 AD |
1428 | |
1429 | igb_configure_tx(adapter); | |
9d5c8243 | 1430 | igb_configure_rx(adapter); |
662d7205 AD |
1431 | |
1432 | igb_rx_fifo_flush_82575(&adapter->hw); | |
1433 | ||
c493ea45 | 1434 | /* call igb_desc_unused which always leaves |
9d5c8243 AK |
1435 | * at least 1 descriptor unused to make sure |
1436 | * next_to_use != next_to_clean */ | |
1437 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
3025a446 | 1438 | struct igb_ring *ring = adapter->rx_ring[i]; |
c493ea45 | 1439 | igb_alloc_rx_buffers_adv(ring, igb_desc_unused(ring)); |
9d5c8243 | 1440 | } |
9d5c8243 AK |
1441 | } |
1442 | ||
88a268c1 NN |
1443 | /** |
1444 | * igb_power_up_link - Power up the phy/serdes link | |
1445 | * @adapter: address of board private structure | |
1446 | **/ | |
1447 | void igb_power_up_link(struct igb_adapter *adapter) | |
1448 | { | |
1449 | if (adapter->hw.phy.media_type == e1000_media_type_copper) | |
1450 | igb_power_up_phy_copper(&adapter->hw); | |
1451 | else | |
1452 | igb_power_up_serdes_link_82575(&adapter->hw); | |
1453 | } | |
1454 | ||
1455 | /** | |
1456 | * igb_power_down_link - Power down the phy/serdes link | |
1457 | * @adapter: address of board private structure | |
1458 | */ | |
1459 | static void igb_power_down_link(struct igb_adapter *adapter) | |
1460 | { | |
1461 | if (adapter->hw.phy.media_type == e1000_media_type_copper) | |
1462 | igb_power_down_phy_copper_82575(&adapter->hw); | |
1463 | else | |
1464 | igb_shutdown_serdes_link_82575(&adapter->hw); | |
1465 | } | |
9d5c8243 AK |
1466 | |
1467 | /** | |
1468 | * igb_up - Open the interface and prepare it to handle traffic | |
1469 | * @adapter: board private structure | |
1470 | **/ | |
9d5c8243 AK |
1471 | int igb_up(struct igb_adapter *adapter) |
1472 | { | |
1473 | struct e1000_hw *hw = &adapter->hw; | |
1474 | int i; | |
1475 | ||
1476 | /* hardware has been reset, we need to reload some things */ | |
1477 | igb_configure(adapter); | |
1478 | ||
1479 | clear_bit(__IGB_DOWN, &adapter->state); | |
1480 | ||
047e0030 AD |
1481 | for (i = 0; i < adapter->num_q_vectors; i++) { |
1482 | struct igb_q_vector *q_vector = adapter->q_vector[i]; | |
1483 | napi_enable(&q_vector->napi); | |
1484 | } | |
844290e5 | 1485 | if (adapter->msix_entries) |
9d5c8243 | 1486 | igb_configure_msix(adapter); |
feeb2721 AD |
1487 | else |
1488 | igb_assign_vector(adapter->q_vector[0], 0); | |
9d5c8243 AK |
1489 | |
1490 | /* Clear any pending interrupts. */ | |
1491 | rd32(E1000_ICR); | |
1492 | igb_irq_enable(adapter); | |
1493 | ||
d4960307 AD |
1494 | /* notify VFs that reset has been completed */ |
1495 | if (adapter->vfs_allocated_count) { | |
1496 | u32 reg_data = rd32(E1000_CTRL_EXT); | |
1497 | reg_data |= E1000_CTRL_EXT_PFRSTD; | |
1498 | wr32(E1000_CTRL_EXT, reg_data); | |
1499 | } | |
1500 | ||
4cb9be7a JB |
1501 | netif_tx_start_all_queues(adapter->netdev); |
1502 | ||
25568a53 AD |
1503 | /* start the watchdog. */ |
1504 | hw->mac.get_link_status = 1; | |
1505 | schedule_work(&adapter->watchdog_task); | |
1506 | ||
9d5c8243 AK |
1507 | return 0; |
1508 | } | |
1509 | ||
1510 | void igb_down(struct igb_adapter *adapter) | |
1511 | { | |
9d5c8243 | 1512 | struct net_device *netdev = adapter->netdev; |
330a6d6a | 1513 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 AK |
1514 | u32 tctl, rctl; |
1515 | int i; | |
1516 | ||
1517 | /* signal that we're down so the interrupt handler does not | |
1518 | * reschedule our watchdog timer */ | |
1519 | set_bit(__IGB_DOWN, &adapter->state); | |
1520 | ||
1521 | /* disable receives in the hardware */ | |
1522 | rctl = rd32(E1000_RCTL); | |
1523 | wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN); | |
1524 | /* flush and sleep below */ | |
1525 | ||
fd2ea0a7 | 1526 | netif_tx_stop_all_queues(netdev); |
9d5c8243 AK |
1527 | |
1528 | /* disable transmits in the hardware */ | |
1529 | tctl = rd32(E1000_TCTL); | |
1530 | tctl &= ~E1000_TCTL_EN; | |
1531 | wr32(E1000_TCTL, tctl); | |
1532 | /* flush both disables and wait for them to finish */ | |
1533 | wrfl(); | |
1534 | msleep(10); | |
1535 | ||
047e0030 AD |
1536 | for (i = 0; i < adapter->num_q_vectors; i++) { |
1537 | struct igb_q_vector *q_vector = adapter->q_vector[i]; | |
1538 | napi_disable(&q_vector->napi); | |
1539 | } | |
9d5c8243 | 1540 | |
9d5c8243 AK |
1541 | igb_irq_disable(adapter); |
1542 | ||
1543 | del_timer_sync(&adapter->watchdog_timer); | |
1544 | del_timer_sync(&adapter->phy_info_timer); | |
1545 | ||
9d5c8243 | 1546 | netif_carrier_off(netdev); |
04fe6358 AD |
1547 | |
1548 | /* record the stats before reset*/ | |
12dcd86b ED |
1549 | spin_lock(&adapter->stats64_lock); |
1550 | igb_update_stats(adapter, &adapter->stats64); | |
1551 | spin_unlock(&adapter->stats64_lock); | |
04fe6358 | 1552 | |
9d5c8243 AK |
1553 | adapter->link_speed = 0; |
1554 | adapter->link_duplex = 0; | |
1555 | ||
3023682e JK |
1556 | if (!pci_channel_offline(adapter->pdev)) |
1557 | igb_reset(adapter); | |
9d5c8243 AK |
1558 | igb_clean_all_tx_rings(adapter); |
1559 | igb_clean_all_rx_rings(adapter); | |
7e0e99ef AD |
1560 | #ifdef CONFIG_IGB_DCA |
1561 | ||
1562 | /* since we reset the hardware DCA settings were cleared */ | |
1563 | igb_setup_dca(adapter); | |
1564 | #endif | |
9d5c8243 AK |
1565 | } |
1566 | ||
1567 | void igb_reinit_locked(struct igb_adapter *adapter) | |
1568 | { | |
1569 | WARN_ON(in_interrupt()); | |
1570 | while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) | |
1571 | msleep(1); | |
1572 | igb_down(adapter); | |
1573 | igb_up(adapter); | |
1574 | clear_bit(__IGB_RESETTING, &adapter->state); | |
1575 | } | |
1576 | ||
1577 | void igb_reset(struct igb_adapter *adapter) | |
1578 | { | |
090b1795 | 1579 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 | 1580 | struct e1000_hw *hw = &adapter->hw; |
2d064c06 AD |
1581 | struct e1000_mac_info *mac = &hw->mac; |
1582 | struct e1000_fc_info *fc = &hw->fc; | |
9d5c8243 AK |
1583 | u32 pba = 0, tx_space, min_tx_space, min_rx_space; |
1584 | u16 hwm; | |
1585 | ||
1586 | /* Repartition Pba for greater than 9k mtu | |
1587 | * To take effect CTRL.RST is required. | |
1588 | */ | |
fa4dfae0 | 1589 | switch (mac->type) { |
d2ba2ed8 | 1590 | case e1000_i350: |
55cac248 AD |
1591 | case e1000_82580: |
1592 | pba = rd32(E1000_RXPBS); | |
1593 | pba = igb_rxpbs_adjust_82580(pba); | |
1594 | break; | |
fa4dfae0 | 1595 | case e1000_82576: |
d249be54 AD |
1596 | pba = rd32(E1000_RXPBS); |
1597 | pba &= E1000_RXPBS_SIZE_MASK_82576; | |
fa4dfae0 AD |
1598 | break; |
1599 | case e1000_82575: | |
1600 | default: | |
1601 | pba = E1000_PBA_34K; | |
1602 | break; | |
2d064c06 | 1603 | } |
9d5c8243 | 1604 | |
2d064c06 AD |
1605 | if ((adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) && |
1606 | (mac->type < e1000_82576)) { | |
9d5c8243 AK |
1607 | /* adjust PBA for jumbo frames */ |
1608 | wr32(E1000_PBA, pba); | |
1609 | ||
1610 | /* To maintain wire speed transmits, the Tx FIFO should be | |
1611 | * large enough to accommodate two full transmit packets, | |
1612 | * rounded up to the next 1KB and expressed in KB. Likewise, | |
1613 | * the Rx FIFO should be large enough to accommodate at least | |
1614 | * one full receive packet and is similarly rounded up and | |
1615 | * expressed in KB. */ | |
1616 | pba = rd32(E1000_PBA); | |
1617 | /* upper 16 bits has Tx packet buffer allocation size in KB */ | |
1618 | tx_space = pba >> 16; | |
1619 | /* lower 16 bits has Rx packet buffer allocation size in KB */ | |
1620 | pba &= 0xffff; | |
1621 | /* the tx fifo also stores 16 bytes of information about the tx | |
1622 | * but don't include ethernet FCS because hardware appends it */ | |
1623 | min_tx_space = (adapter->max_frame_size + | |
85e8d004 | 1624 | sizeof(union e1000_adv_tx_desc) - |
9d5c8243 AK |
1625 | ETH_FCS_LEN) * 2; |
1626 | min_tx_space = ALIGN(min_tx_space, 1024); | |
1627 | min_tx_space >>= 10; | |
1628 | /* software strips receive CRC, so leave room for it */ | |
1629 | min_rx_space = adapter->max_frame_size; | |
1630 | min_rx_space = ALIGN(min_rx_space, 1024); | |
1631 | min_rx_space >>= 10; | |
1632 | ||
1633 | /* If current Tx allocation is less than the min Tx FIFO size, | |
1634 | * and the min Tx FIFO size is less than the current Rx FIFO | |
1635 | * allocation, take space away from current Rx allocation */ | |
1636 | if (tx_space < min_tx_space && | |
1637 | ((min_tx_space - tx_space) < pba)) { | |
1638 | pba = pba - (min_tx_space - tx_space); | |
1639 | ||
1640 | /* if short on rx space, rx wins and must trump tx | |
1641 | * adjustment */ | |
1642 | if (pba < min_rx_space) | |
1643 | pba = min_rx_space; | |
1644 | } | |
2d064c06 | 1645 | wr32(E1000_PBA, pba); |
9d5c8243 | 1646 | } |
9d5c8243 AK |
1647 | |
1648 | /* flow control settings */ | |
1649 | /* The high water mark must be low enough to fit one full frame | |
1650 | * (or the size used for early receive) above it in the Rx FIFO. | |
1651 | * Set it to the lower of: | |
1652 | * - 90% of the Rx FIFO size, or | |
1653 | * - the full Rx FIFO size minus one full frame */ | |
1654 | hwm = min(((pba << 10) * 9 / 10), | |
2d064c06 | 1655 | ((pba << 10) - 2 * adapter->max_frame_size)); |
9d5c8243 | 1656 | |
d405ea3e AD |
1657 | fc->high_water = hwm & 0xFFF0; /* 16-byte granularity */ |
1658 | fc->low_water = fc->high_water - 16; | |
9d5c8243 AK |
1659 | fc->pause_time = 0xFFFF; |
1660 | fc->send_xon = 1; | |
0cce119a | 1661 | fc->current_mode = fc->requested_mode; |
9d5c8243 | 1662 | |
4ae196df AD |
1663 | /* disable receive for all VFs and wait one second */ |
1664 | if (adapter->vfs_allocated_count) { | |
1665 | int i; | |
1666 | for (i = 0 ; i < adapter->vfs_allocated_count; i++) | |
8fa7e0f7 | 1667 | adapter->vf_data[i].flags &= IGB_VF_FLAG_PF_SET_MAC; |
4ae196df AD |
1668 | |
1669 | /* ping all the active vfs to let them know we are going down */ | |
f2ca0dbe | 1670 | igb_ping_all_vfs(adapter); |
4ae196df AD |
1671 | |
1672 | /* disable transmits and receives */ | |
1673 | wr32(E1000_VFRE, 0); | |
1674 | wr32(E1000_VFTE, 0); | |
1675 | } | |
1676 | ||
9d5c8243 | 1677 | /* Allow time for pending master requests to run */ |
330a6d6a | 1678 | hw->mac.ops.reset_hw(hw); |
9d5c8243 AK |
1679 | wr32(E1000_WUC, 0); |
1680 | ||
330a6d6a | 1681 | if (hw->mac.ops.init_hw(hw)) |
090b1795 | 1682 | dev_err(&pdev->dev, "Hardware Error\n"); |
831ec0b4 CW |
1683 | if (hw->mac.type > e1000_82580) { |
1684 | if (adapter->flags & IGB_FLAG_DMAC) { | |
1685 | u32 reg; | |
1686 | ||
1687 | /* | |
1688 | * DMA Coalescing high water mark needs to be higher | |
1689 | * than * the * Rx threshold. The Rx threshold is | |
1690 | * currently * pba - 6, so we * should use a high water | |
1691 | * mark of pba * - 4. */ | |
1692 | hwm = (pba - 4) << 10; | |
1693 | ||
1694 | reg = (((pba-6) << E1000_DMACR_DMACTHR_SHIFT) | |
1695 | & E1000_DMACR_DMACTHR_MASK); | |
1696 | ||
1697 | /* transition to L0x or L1 if available..*/ | |
1698 | reg |= (E1000_DMACR_DMAC_EN | E1000_DMACR_DMAC_LX_MASK); | |
1699 | ||
1700 | /* watchdog timer= +-1000 usec in 32usec intervals */ | |
1701 | reg |= (1000 >> 5); | |
1702 | wr32(E1000_DMACR, reg); | |
1703 | ||
1704 | /* no lower threshold to disable coalescing(smart fifb) | |
1705 | * -UTRESH=0*/ | |
1706 | wr32(E1000_DMCRTRH, 0); | |
1707 | ||
1708 | /* set hwm to PBA - 2 * max frame size */ | |
1709 | wr32(E1000_FCRTC, hwm); | |
1710 | ||
1711 | /* | |
1712 | * This sets the time to wait before requesting tran- | |
1713 | * sition to * low power state to number of usecs needed | |
1714 | * to receive 1 512 * byte frame at gigabit line rate | |
1715 | */ | |
1716 | reg = rd32(E1000_DMCTLX); | |
1717 | reg |= IGB_DMCTLX_DCFLUSH_DIS; | |
1718 | ||
1719 | /* Delay 255 usec before entering Lx state. */ | |
1720 | reg |= 0xFF; | |
1721 | wr32(E1000_DMCTLX, reg); | |
1722 | ||
1723 | /* free space in Tx packet buffer to wake from DMAC */ | |
1724 | wr32(E1000_DMCTXTH, | |
1725 | (IGB_MIN_TXPBSIZE - | |
1726 | (IGB_TX_BUF_4096 + adapter->max_frame_size)) | |
1727 | >> 6); | |
1728 | ||
1729 | /* make low power state decision controlled by DMAC */ | |
1730 | reg = rd32(E1000_PCIEMISC); | |
1731 | reg |= E1000_PCIEMISC_LX_DECISION; | |
1732 | wr32(E1000_PCIEMISC, reg); | |
1733 | } /* end if IGB_FLAG_DMAC set */ | |
1734 | } | |
55cac248 AD |
1735 | if (hw->mac.type == e1000_82580) { |
1736 | u32 reg = rd32(E1000_PCIEMISC); | |
1737 | wr32(E1000_PCIEMISC, | |
1738 | reg & ~E1000_PCIEMISC_LX_DECISION); | |
1739 | } | |
88a268c1 NN |
1740 | if (!netif_running(adapter->netdev)) |
1741 | igb_power_down_link(adapter); | |
1742 | ||
9d5c8243 AK |
1743 | igb_update_mng_vlan(adapter); |
1744 | ||
1745 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ | |
1746 | wr32(E1000_VET, ETHERNET_IEEE_VLAN_TYPE); | |
1747 | ||
330a6d6a | 1748 | igb_get_phy_info(hw); |
9d5c8243 AK |
1749 | } |
1750 | ||
ac52caa3 MM |
1751 | static int igb_set_features(struct net_device *netdev, u32 features) |
1752 | { | |
1753 | struct igb_adapter *adapter = netdev_priv(netdev); | |
1754 | int i; | |
1755 | ||
1756 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
1757 | if (features & NETIF_F_RXCSUM) | |
1758 | adapter->rx_ring[i]->flags |= IGB_RING_FLAG_RX_CSUM; | |
1759 | else | |
1760 | adapter->rx_ring[i]->flags &= ~IGB_RING_FLAG_RX_CSUM; | |
1761 | } | |
1762 | ||
1763 | return 0; | |
1764 | } | |
1765 | ||
2e5c6922 | 1766 | static const struct net_device_ops igb_netdev_ops = { |
559e9c49 | 1767 | .ndo_open = igb_open, |
2e5c6922 | 1768 | .ndo_stop = igb_close, |
00829823 | 1769 | .ndo_start_xmit = igb_xmit_frame_adv, |
12dcd86b | 1770 | .ndo_get_stats64 = igb_get_stats64, |
ff41f8dc AD |
1771 | .ndo_set_rx_mode = igb_set_rx_mode, |
1772 | .ndo_set_multicast_list = igb_set_rx_mode, | |
2e5c6922 SH |
1773 | .ndo_set_mac_address = igb_set_mac, |
1774 | .ndo_change_mtu = igb_change_mtu, | |
1775 | .ndo_do_ioctl = igb_ioctl, | |
1776 | .ndo_tx_timeout = igb_tx_timeout, | |
1777 | .ndo_validate_addr = eth_validate_addr, | |
1778 | .ndo_vlan_rx_register = igb_vlan_rx_register, | |
1779 | .ndo_vlan_rx_add_vid = igb_vlan_rx_add_vid, | |
1780 | .ndo_vlan_rx_kill_vid = igb_vlan_rx_kill_vid, | |
8151d294 WM |
1781 | .ndo_set_vf_mac = igb_ndo_set_vf_mac, |
1782 | .ndo_set_vf_vlan = igb_ndo_set_vf_vlan, | |
1783 | .ndo_set_vf_tx_rate = igb_ndo_set_vf_bw, | |
1784 | .ndo_get_vf_config = igb_ndo_get_vf_config, | |
2e5c6922 SH |
1785 | #ifdef CONFIG_NET_POLL_CONTROLLER |
1786 | .ndo_poll_controller = igb_netpoll, | |
1787 | #endif | |
ac52caa3 | 1788 | .ndo_set_features = igb_set_features, |
2e5c6922 SH |
1789 | }; |
1790 | ||
9d5c8243 AK |
1791 | /** |
1792 | * igb_probe - Device Initialization Routine | |
1793 | * @pdev: PCI device information struct | |
1794 | * @ent: entry in igb_pci_tbl | |
1795 | * | |
1796 | * Returns 0 on success, negative on failure | |
1797 | * | |
1798 | * igb_probe initializes an adapter identified by a pci_dev structure. | |
1799 | * The OS initialization, configuring of the adapter private structure, | |
1800 | * and a hardware reset occur. | |
1801 | **/ | |
1802 | static int __devinit igb_probe(struct pci_dev *pdev, | |
1803 | const struct pci_device_id *ent) | |
1804 | { | |
1805 | struct net_device *netdev; | |
1806 | struct igb_adapter *adapter; | |
1807 | struct e1000_hw *hw; | |
4337e993 | 1808 | u16 eeprom_data = 0; |
9835fd73 | 1809 | s32 ret_val; |
4337e993 | 1810 | static int global_quad_port_a; /* global quad port a indication */ |
9d5c8243 AK |
1811 | const struct e1000_info *ei = igb_info_tbl[ent->driver_data]; |
1812 | unsigned long mmio_start, mmio_len; | |
2d6a5e95 | 1813 | int err, pci_using_dac; |
9d5c8243 | 1814 | u16 eeprom_apme_mask = IGB_EEPROM_APME; |
9835fd73 | 1815 | u8 part_str[E1000_PBANUM_LENGTH]; |
9d5c8243 | 1816 | |
bded64a7 AG |
1817 | /* Catch broken hardware that put the wrong VF device ID in |
1818 | * the PCIe SR-IOV capability. | |
1819 | */ | |
1820 | if (pdev->is_virtfn) { | |
1821 | WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n", | |
1822 | pci_name(pdev), pdev->vendor, pdev->device); | |
1823 | return -EINVAL; | |
1824 | } | |
1825 | ||
aed5dec3 | 1826 | err = pci_enable_device_mem(pdev); |
9d5c8243 AK |
1827 | if (err) |
1828 | return err; | |
1829 | ||
1830 | pci_using_dac = 0; | |
59d71989 | 1831 | err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)); |
9d5c8243 | 1832 | if (!err) { |
59d71989 | 1833 | err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); |
9d5c8243 AK |
1834 | if (!err) |
1835 | pci_using_dac = 1; | |
1836 | } else { | |
59d71989 | 1837 | err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); |
9d5c8243 | 1838 | if (err) { |
59d71989 | 1839 | err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); |
9d5c8243 AK |
1840 | if (err) { |
1841 | dev_err(&pdev->dev, "No usable DMA " | |
1842 | "configuration, aborting\n"); | |
1843 | goto err_dma; | |
1844 | } | |
1845 | } | |
1846 | } | |
1847 | ||
aed5dec3 AD |
1848 | err = pci_request_selected_regions(pdev, pci_select_bars(pdev, |
1849 | IORESOURCE_MEM), | |
1850 | igb_driver_name); | |
9d5c8243 AK |
1851 | if (err) |
1852 | goto err_pci_reg; | |
1853 | ||
19d5afd4 | 1854 | pci_enable_pcie_error_reporting(pdev); |
40a914fa | 1855 | |
9d5c8243 | 1856 | pci_set_master(pdev); |
c682fc23 | 1857 | pci_save_state(pdev); |
9d5c8243 AK |
1858 | |
1859 | err = -ENOMEM; | |
1bfaf07b AD |
1860 | netdev = alloc_etherdev_mq(sizeof(struct igb_adapter), |
1861 | IGB_ABS_MAX_TX_QUEUES); | |
9d5c8243 AK |
1862 | if (!netdev) |
1863 | goto err_alloc_etherdev; | |
1864 | ||
1865 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
1866 | ||
1867 | pci_set_drvdata(pdev, netdev); | |
1868 | adapter = netdev_priv(netdev); | |
1869 | adapter->netdev = netdev; | |
1870 | adapter->pdev = pdev; | |
1871 | hw = &adapter->hw; | |
1872 | hw->back = adapter; | |
1873 | adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE; | |
1874 | ||
1875 | mmio_start = pci_resource_start(pdev, 0); | |
1876 | mmio_len = pci_resource_len(pdev, 0); | |
1877 | ||
1878 | err = -EIO; | |
28b0759c AD |
1879 | hw->hw_addr = ioremap(mmio_start, mmio_len); |
1880 | if (!hw->hw_addr) | |
9d5c8243 AK |
1881 | goto err_ioremap; |
1882 | ||
2e5c6922 | 1883 | netdev->netdev_ops = &igb_netdev_ops; |
9d5c8243 | 1884 | igb_set_ethtool_ops(netdev); |
9d5c8243 | 1885 | netdev->watchdog_timeo = 5 * HZ; |
9d5c8243 AK |
1886 | |
1887 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); | |
1888 | ||
1889 | netdev->mem_start = mmio_start; | |
1890 | netdev->mem_end = mmio_start + mmio_len; | |
1891 | ||
9d5c8243 AK |
1892 | /* PCI config space info */ |
1893 | hw->vendor_id = pdev->vendor; | |
1894 | hw->device_id = pdev->device; | |
1895 | hw->revision_id = pdev->revision; | |
1896 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
1897 | hw->subsystem_device_id = pdev->subsystem_device; | |
1898 | ||
9d5c8243 AK |
1899 | /* Copy the default MAC, PHY and NVM function pointers */ |
1900 | memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); | |
1901 | memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); | |
1902 | memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); | |
1903 | /* Initialize skew-specific constants */ | |
1904 | err = ei->get_invariants(hw); | |
1905 | if (err) | |
450c87c8 | 1906 | goto err_sw_init; |
9d5c8243 | 1907 | |
450c87c8 | 1908 | /* setup the private structure */ |
9d5c8243 AK |
1909 | err = igb_sw_init(adapter); |
1910 | if (err) | |
1911 | goto err_sw_init; | |
1912 | ||
1913 | igb_get_bus_info_pcie(hw); | |
1914 | ||
1915 | hw->phy.autoneg_wait_to_complete = false; | |
9d5c8243 AK |
1916 | |
1917 | /* Copper options */ | |
1918 | if (hw->phy.media_type == e1000_media_type_copper) { | |
1919 | hw->phy.mdix = AUTO_ALL_MODES; | |
1920 | hw->phy.disable_polarity_correction = false; | |
1921 | hw->phy.ms_type = e1000_ms_hw_default; | |
1922 | } | |
1923 | ||
1924 | if (igb_check_reset_block(hw)) | |
1925 | dev_info(&pdev->dev, | |
1926 | "PHY reset is blocked due to SOL/IDER session.\n"); | |
1927 | ||
ac52caa3 | 1928 | netdev->hw_features = NETIF_F_SG | |
7d8eb29e | 1929 | NETIF_F_IP_CSUM | |
ac52caa3 MM |
1930 | NETIF_F_IPV6_CSUM | |
1931 | NETIF_F_TSO | | |
1932 | NETIF_F_TSO6 | | |
1933 | NETIF_F_RXCSUM; | |
1934 | ||
1935 | netdev->features = netdev->hw_features | | |
9d5c8243 AK |
1936 | NETIF_F_HW_VLAN_TX | |
1937 | NETIF_F_HW_VLAN_RX | | |
1938 | NETIF_F_HW_VLAN_FILTER; | |
1939 | ||
48f29ffc JK |
1940 | netdev->vlan_features |= NETIF_F_TSO; |
1941 | netdev->vlan_features |= NETIF_F_TSO6; | |
7d8eb29e | 1942 | netdev->vlan_features |= NETIF_F_IP_CSUM; |
cd1da503 | 1943 | netdev->vlan_features |= NETIF_F_IPV6_CSUM; |
48f29ffc JK |
1944 | netdev->vlan_features |= NETIF_F_SG; |
1945 | ||
7b872a55 | 1946 | if (pci_using_dac) { |
9d5c8243 | 1947 | netdev->features |= NETIF_F_HIGHDMA; |
7b872a55 YZ |
1948 | netdev->vlan_features |= NETIF_F_HIGHDMA; |
1949 | } | |
9d5c8243 | 1950 | |
ac52caa3 MM |
1951 | if (hw->mac.type >= e1000_82576) { |
1952 | netdev->hw_features |= NETIF_F_SCTP_CSUM; | |
b9473560 | 1953 | netdev->features |= NETIF_F_SCTP_CSUM; |
ac52caa3 | 1954 | } |
b9473560 | 1955 | |
330a6d6a | 1956 | adapter->en_mng_pt = igb_enable_mng_pass_thru(hw); |
9d5c8243 AK |
1957 | |
1958 | /* before reading the NVM, reset the controller to put the device in a | |
1959 | * known good starting state */ | |
1960 | hw->mac.ops.reset_hw(hw); | |
1961 | ||
1962 | /* make sure the NVM is good */ | |
4322e561 | 1963 | if (hw->nvm.ops.validate(hw) < 0) { |
9d5c8243 AK |
1964 | dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n"); |
1965 | err = -EIO; | |
1966 | goto err_eeprom; | |
1967 | } | |
1968 | ||
1969 | /* copy the MAC address out of the NVM */ | |
1970 | if (hw->mac.ops.read_mac_addr(hw)) | |
1971 | dev_err(&pdev->dev, "NVM Read Error\n"); | |
1972 | ||
1973 | memcpy(netdev->dev_addr, hw->mac.addr, netdev->addr_len); | |
1974 | memcpy(netdev->perm_addr, hw->mac.addr, netdev->addr_len); | |
1975 | ||
1976 | if (!is_valid_ether_addr(netdev->perm_addr)) { | |
1977 | dev_err(&pdev->dev, "Invalid MAC Address\n"); | |
1978 | err = -EIO; | |
1979 | goto err_eeprom; | |
1980 | } | |
1981 | ||
c061b18d | 1982 | setup_timer(&adapter->watchdog_timer, igb_watchdog, |
0e340485 | 1983 | (unsigned long) adapter); |
c061b18d | 1984 | setup_timer(&adapter->phy_info_timer, igb_update_phy_info, |
0e340485 | 1985 | (unsigned long) adapter); |
9d5c8243 AK |
1986 | |
1987 | INIT_WORK(&adapter->reset_task, igb_reset_task); | |
1988 | INIT_WORK(&adapter->watchdog_task, igb_watchdog_task); | |
1989 | ||
450c87c8 | 1990 | /* Initialize link properties that are user-changeable */ |
9d5c8243 AK |
1991 | adapter->fc_autoneg = true; |
1992 | hw->mac.autoneg = true; | |
1993 | hw->phy.autoneg_advertised = 0x2f; | |
1994 | ||
0cce119a AD |
1995 | hw->fc.requested_mode = e1000_fc_default; |
1996 | hw->fc.current_mode = e1000_fc_default; | |
9d5c8243 | 1997 | |
9d5c8243 AK |
1998 | igb_validate_mdi_setting(hw); |
1999 | ||
9d5c8243 AK |
2000 | /* Initial Wake on LAN setting If APM wake is enabled in the EEPROM, |
2001 | * enable the ACPI Magic Packet filter | |
2002 | */ | |
2003 | ||
a2cf8b6c | 2004 | if (hw->bus.func == 0) |
312c75ae | 2005 | hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); |
55cac248 AD |
2006 | else if (hw->mac.type == e1000_82580) |
2007 | hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A + | |
2008 | NVM_82580_LAN_FUNC_OFFSET(hw->bus.func), 1, | |
2009 | &eeprom_data); | |
a2cf8b6c AD |
2010 | else if (hw->bus.func == 1) |
2011 | hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); | |
9d5c8243 AK |
2012 | |
2013 | if (eeprom_data & eeprom_apme_mask) | |
2014 | adapter->eeprom_wol |= E1000_WUFC_MAG; | |
2015 | ||
2016 | /* now that we have the eeprom settings, apply the special cases where | |
2017 | * the eeprom may be wrong or the board simply won't support wake on | |
2018 | * lan on a particular port */ | |
2019 | switch (pdev->device) { | |
2020 | case E1000_DEV_ID_82575GB_QUAD_COPPER: | |
2021 | adapter->eeprom_wol = 0; | |
2022 | break; | |
2023 | case E1000_DEV_ID_82575EB_FIBER_SERDES: | |
2d064c06 AD |
2024 | case E1000_DEV_ID_82576_FIBER: |
2025 | case E1000_DEV_ID_82576_SERDES: | |
9d5c8243 AK |
2026 | /* Wake events only supported on port A for dual fiber |
2027 | * regardless of eeprom setting */ | |
2028 | if (rd32(E1000_STATUS) & E1000_STATUS_FUNC_1) | |
2029 | adapter->eeprom_wol = 0; | |
2030 | break; | |
c8ea5ea9 | 2031 | case E1000_DEV_ID_82576_QUAD_COPPER: |
d5aa2252 | 2032 | case E1000_DEV_ID_82576_QUAD_COPPER_ET2: |
c8ea5ea9 AD |
2033 | /* if quad port adapter, disable WoL on all but port A */ |
2034 | if (global_quad_port_a != 0) | |
2035 | adapter->eeprom_wol = 0; | |
2036 | else | |
2037 | adapter->flags |= IGB_FLAG_QUAD_PORT_A; | |
2038 | /* Reset for multiple quad port adapters */ | |
2039 | if (++global_quad_port_a == 4) | |
2040 | global_quad_port_a = 0; | |
2041 | break; | |
9d5c8243 AK |
2042 | } |
2043 | ||
2044 | /* initialize the wol settings based on the eeprom settings */ | |
2045 | adapter->wol = adapter->eeprom_wol; | |
e1b86d84 | 2046 | device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
9d5c8243 AK |
2047 | |
2048 | /* reset the hardware with the new settings */ | |
2049 | igb_reset(adapter); | |
2050 | ||
2051 | /* let the f/w know that the h/w is now under the control of the | |
2052 | * driver. */ | |
2053 | igb_get_hw_control(adapter); | |
2054 | ||
9d5c8243 AK |
2055 | strcpy(netdev->name, "eth%d"); |
2056 | err = register_netdev(netdev); | |
2057 | if (err) | |
2058 | goto err_register; | |
2059 | ||
b168dfc5 JB |
2060 | /* carrier off reporting is important to ethtool even BEFORE open */ |
2061 | netif_carrier_off(netdev); | |
2062 | ||
421e02f0 | 2063 | #ifdef CONFIG_IGB_DCA |
bbd98fe4 | 2064 | if (dca_add_requester(&pdev->dev) == 0) { |
7dfc16fa | 2065 | adapter->flags |= IGB_FLAG_DCA_ENABLED; |
fe4506b6 | 2066 | dev_info(&pdev->dev, "DCA enabled\n"); |
fe4506b6 JC |
2067 | igb_setup_dca(adapter); |
2068 | } | |
fe4506b6 | 2069 | |
38c845c7 | 2070 | #endif |
673b8b70 AB |
2071 | /* do hw tstamp init after resetting */ |
2072 | igb_init_hw_timer(adapter); | |
2073 | ||
9d5c8243 AK |
2074 | dev_info(&pdev->dev, "Intel(R) Gigabit Ethernet Network Connection\n"); |
2075 | /* print bus type/speed/width info */ | |
7c510e4b | 2076 | dev_info(&pdev->dev, "%s: (PCIe:%s:%s) %pM\n", |
9d5c8243 | 2077 | netdev->name, |
559e9c49 | 2078 | ((hw->bus.speed == e1000_bus_speed_2500) ? "2.5Gb/s" : |
ff846f52 | 2079 | (hw->bus.speed == e1000_bus_speed_5000) ? "5.0Gb/s" : |
559e9c49 | 2080 | "unknown"), |
59c3de89 AD |
2081 | ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" : |
2082 | (hw->bus.width == e1000_bus_width_pcie_x2) ? "Width x2" : | |
2083 | (hw->bus.width == e1000_bus_width_pcie_x1) ? "Width x1" : | |
2084 | "unknown"), | |
7c510e4b | 2085 | netdev->dev_addr); |
9d5c8243 | 2086 | |
9835fd73 CW |
2087 | ret_val = igb_read_part_string(hw, part_str, E1000_PBANUM_LENGTH); |
2088 | if (ret_val) | |
2089 | strcpy(part_str, "Unknown"); | |
2090 | dev_info(&pdev->dev, "%s: PBA No: %s\n", netdev->name, part_str); | |
9d5c8243 AK |
2091 | dev_info(&pdev->dev, |
2092 | "Using %s interrupts. %d rx queue(s), %d tx queue(s)\n", | |
2093 | adapter->msix_entries ? "MSI-X" : | |
7dfc16fa | 2094 | (adapter->flags & IGB_FLAG_HAS_MSI) ? "MSI" : "legacy", |
9d5c8243 | 2095 | adapter->num_rx_queues, adapter->num_tx_queues); |
09b068d4 CW |
2096 | switch (hw->mac.type) { |
2097 | case e1000_i350: | |
2098 | igb_set_eee_i350(hw); | |
2099 | break; | |
2100 | default: | |
2101 | break; | |
2102 | } | |
9d5c8243 AK |
2103 | return 0; |
2104 | ||
2105 | err_register: | |
2106 | igb_release_hw_control(adapter); | |
2107 | err_eeprom: | |
2108 | if (!igb_check_reset_block(hw)) | |
f5f4cf08 | 2109 | igb_reset_phy(hw); |
9d5c8243 AK |
2110 | |
2111 | if (hw->flash_address) | |
2112 | iounmap(hw->flash_address); | |
9d5c8243 | 2113 | err_sw_init: |
047e0030 | 2114 | igb_clear_interrupt_scheme(adapter); |
9d5c8243 AK |
2115 | iounmap(hw->hw_addr); |
2116 | err_ioremap: | |
2117 | free_netdev(netdev); | |
2118 | err_alloc_etherdev: | |
559e9c49 AD |
2119 | pci_release_selected_regions(pdev, |
2120 | pci_select_bars(pdev, IORESOURCE_MEM)); | |
9d5c8243 AK |
2121 | err_pci_reg: |
2122 | err_dma: | |
2123 | pci_disable_device(pdev); | |
2124 | return err; | |
2125 | } | |
2126 | ||
2127 | /** | |
2128 | * igb_remove - Device Removal Routine | |
2129 | * @pdev: PCI device information struct | |
2130 | * | |
2131 | * igb_remove is called by the PCI subsystem to alert the driver | |
2132 | * that it should release a PCI device. The could be caused by a | |
2133 | * Hot-Plug event, or because the driver is going to be removed from | |
2134 | * memory. | |
2135 | **/ | |
2136 | static void __devexit igb_remove(struct pci_dev *pdev) | |
2137 | { | |
2138 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2139 | struct igb_adapter *adapter = netdev_priv(netdev); | |
fe4506b6 | 2140 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 | 2141 | |
760141a5 TH |
2142 | /* |
2143 | * The watchdog timer may be rescheduled, so explicitly | |
2144 | * disable watchdog from being rescheduled. | |
2145 | */ | |
9d5c8243 AK |
2146 | set_bit(__IGB_DOWN, &adapter->state); |
2147 | del_timer_sync(&adapter->watchdog_timer); | |
2148 | del_timer_sync(&adapter->phy_info_timer); | |
2149 | ||
760141a5 TH |
2150 | cancel_work_sync(&adapter->reset_task); |
2151 | cancel_work_sync(&adapter->watchdog_task); | |
9d5c8243 | 2152 | |
421e02f0 | 2153 | #ifdef CONFIG_IGB_DCA |
7dfc16fa | 2154 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) { |
fe4506b6 JC |
2155 | dev_info(&pdev->dev, "DCA disabled\n"); |
2156 | dca_remove_requester(&pdev->dev); | |
7dfc16fa | 2157 | adapter->flags &= ~IGB_FLAG_DCA_ENABLED; |
cbd347ad | 2158 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE); |
fe4506b6 JC |
2159 | } |
2160 | #endif | |
2161 | ||
9d5c8243 AK |
2162 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
2163 | * would have already happened in close and is redundant. */ | |
2164 | igb_release_hw_control(adapter); | |
2165 | ||
2166 | unregister_netdev(netdev); | |
2167 | ||
047e0030 | 2168 | igb_clear_interrupt_scheme(adapter); |
9d5c8243 | 2169 | |
37680117 AD |
2170 | #ifdef CONFIG_PCI_IOV |
2171 | /* reclaim resources allocated to VFs */ | |
2172 | if (adapter->vf_data) { | |
2173 | /* disable iov and allow time for transactions to clear */ | |
2174 | pci_disable_sriov(pdev); | |
2175 | msleep(500); | |
2176 | ||
2177 | kfree(adapter->vf_data); | |
2178 | adapter->vf_data = NULL; | |
2179 | wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ); | |
2180 | msleep(100); | |
2181 | dev_info(&pdev->dev, "IOV Disabled\n"); | |
2182 | } | |
2183 | #endif | |
559e9c49 | 2184 | |
28b0759c AD |
2185 | iounmap(hw->hw_addr); |
2186 | if (hw->flash_address) | |
2187 | iounmap(hw->flash_address); | |
559e9c49 AD |
2188 | pci_release_selected_regions(pdev, |
2189 | pci_select_bars(pdev, IORESOURCE_MEM)); | |
9d5c8243 AK |
2190 | |
2191 | free_netdev(netdev); | |
2192 | ||
19d5afd4 | 2193 | pci_disable_pcie_error_reporting(pdev); |
40a914fa | 2194 | |
9d5c8243 AK |
2195 | pci_disable_device(pdev); |
2196 | } | |
2197 | ||
a6b623e0 AD |
2198 | /** |
2199 | * igb_probe_vfs - Initialize vf data storage and add VFs to pci config space | |
2200 | * @adapter: board private structure to initialize | |
2201 | * | |
2202 | * This function initializes the vf specific data storage and then attempts to | |
2203 | * allocate the VFs. The reason for ordering it this way is because it is much | |
2204 | * mor expensive time wise to disable SR-IOV than it is to allocate and free | |
2205 | * the memory for the VFs. | |
2206 | **/ | |
2207 | static void __devinit igb_probe_vfs(struct igb_adapter * adapter) | |
2208 | { | |
2209 | #ifdef CONFIG_PCI_IOV | |
2210 | struct pci_dev *pdev = adapter->pdev; | |
2211 | ||
a6b623e0 AD |
2212 | if (adapter->vfs_allocated_count) { |
2213 | adapter->vf_data = kcalloc(adapter->vfs_allocated_count, | |
2214 | sizeof(struct vf_data_storage), | |
2215 | GFP_KERNEL); | |
2216 | /* if allocation failed then we do not support SR-IOV */ | |
2217 | if (!adapter->vf_data) { | |
2218 | adapter->vfs_allocated_count = 0; | |
2219 | dev_err(&pdev->dev, "Unable to allocate memory for VF " | |
2220 | "Data Storage\n"); | |
2221 | } | |
2222 | } | |
2223 | ||
2224 | if (pci_enable_sriov(pdev, adapter->vfs_allocated_count)) { | |
2225 | kfree(adapter->vf_data); | |
2226 | adapter->vf_data = NULL; | |
2227 | #endif /* CONFIG_PCI_IOV */ | |
2228 | adapter->vfs_allocated_count = 0; | |
2229 | #ifdef CONFIG_PCI_IOV | |
2230 | } else { | |
2231 | unsigned char mac_addr[ETH_ALEN]; | |
2232 | int i; | |
2233 | dev_info(&pdev->dev, "%d vfs allocated\n", | |
2234 | adapter->vfs_allocated_count); | |
2235 | for (i = 0; i < adapter->vfs_allocated_count; i++) { | |
2236 | random_ether_addr(mac_addr); | |
2237 | igb_set_vf_mac(adapter, i, mac_addr); | |
2238 | } | |
831ec0b4 CW |
2239 | /* DMA Coalescing is not supported in IOV mode. */ |
2240 | if (adapter->flags & IGB_FLAG_DMAC) | |
2241 | adapter->flags &= ~IGB_FLAG_DMAC; | |
a6b623e0 AD |
2242 | } |
2243 | #endif /* CONFIG_PCI_IOV */ | |
2244 | } | |
2245 | ||
115f459a AD |
2246 | |
2247 | /** | |
2248 | * igb_init_hw_timer - Initialize hardware timer used with IEEE 1588 timestamp | |
2249 | * @adapter: board private structure to initialize | |
2250 | * | |
2251 | * igb_init_hw_timer initializes the function pointer and values for the hw | |
2252 | * timer found in hardware. | |
2253 | **/ | |
2254 | static void igb_init_hw_timer(struct igb_adapter *adapter) | |
2255 | { | |
2256 | struct e1000_hw *hw = &adapter->hw; | |
2257 | ||
2258 | switch (hw->mac.type) { | |
d2ba2ed8 | 2259 | case e1000_i350: |
55cac248 AD |
2260 | case e1000_82580: |
2261 | memset(&adapter->cycles, 0, sizeof(adapter->cycles)); | |
2262 | adapter->cycles.read = igb_read_clock; | |
2263 | adapter->cycles.mask = CLOCKSOURCE_MASK(64); | |
2264 | adapter->cycles.mult = 1; | |
2265 | /* | |
2266 | * The 82580 timesync updates the system timer every 8ns by 8ns | |
2267 | * and the value cannot be shifted. Instead we need to shift | |
2268 | * the registers to generate a 64bit timer value. As a result | |
2269 | * SYSTIMR/L/H, TXSTMPL/H, RXSTMPL/H all have to be shifted by | |
2270 | * 24 in order to generate a larger value for synchronization. | |
2271 | */ | |
2272 | adapter->cycles.shift = IGB_82580_TSYNC_SHIFT; | |
2273 | /* disable system timer temporarily by setting bit 31 */ | |
2274 | wr32(E1000_TSAUXC, 0x80000000); | |
2275 | wrfl(); | |
2276 | ||
2277 | /* Set registers so that rollover occurs soon to test this. */ | |
2278 | wr32(E1000_SYSTIMR, 0x00000000); | |
2279 | wr32(E1000_SYSTIML, 0x80000000); | |
2280 | wr32(E1000_SYSTIMH, 0x000000FF); | |
2281 | wrfl(); | |
2282 | ||
2283 | /* enable system timer by clearing bit 31 */ | |
2284 | wr32(E1000_TSAUXC, 0x0); | |
2285 | wrfl(); | |
2286 | ||
2287 | timecounter_init(&adapter->clock, | |
2288 | &adapter->cycles, | |
2289 | ktime_to_ns(ktime_get_real())); | |
2290 | /* | |
2291 | * Synchronize our NIC clock against system wall clock. NIC | |
2292 | * time stamp reading requires ~3us per sample, each sample | |
2293 | * was pretty stable even under load => only require 10 | |
2294 | * samples for each offset comparison. | |
2295 | */ | |
2296 | memset(&adapter->compare, 0, sizeof(adapter->compare)); | |
2297 | adapter->compare.source = &adapter->clock; | |
2298 | adapter->compare.target = ktime_get_real; | |
2299 | adapter->compare.num_samples = 10; | |
2300 | timecompare_update(&adapter->compare, 0); | |
2301 | break; | |
115f459a AD |
2302 | case e1000_82576: |
2303 | /* | |
2304 | * Initialize hardware timer: we keep it running just in case | |
2305 | * that some program needs it later on. | |
2306 | */ | |
2307 | memset(&adapter->cycles, 0, sizeof(adapter->cycles)); | |
2308 | adapter->cycles.read = igb_read_clock; | |
2309 | adapter->cycles.mask = CLOCKSOURCE_MASK(64); | |
2310 | adapter->cycles.mult = 1; | |
2311 | /** | |
2312 | * Scale the NIC clock cycle by a large factor so that | |
2313 | * relatively small clock corrections can be added or | |
25985edc | 2314 | * subtracted at each clock tick. The drawbacks of a large |
115f459a AD |
2315 | * factor are a) that the clock register overflows more quickly |
2316 | * (not such a big deal) and b) that the increment per tick has | |
2317 | * to fit into 24 bits. As a result we need to use a shift of | |
2318 | * 19 so we can fit a value of 16 into the TIMINCA register. | |
2319 | */ | |
2320 | adapter->cycles.shift = IGB_82576_TSYNC_SHIFT; | |
2321 | wr32(E1000_TIMINCA, | |
2322 | (1 << E1000_TIMINCA_16NS_SHIFT) | | |
2323 | (16 << IGB_82576_TSYNC_SHIFT)); | |
2324 | ||
2325 | /* Set registers so that rollover occurs soon to test this. */ | |
2326 | wr32(E1000_SYSTIML, 0x00000000); | |
2327 | wr32(E1000_SYSTIMH, 0xFF800000); | |
2328 | wrfl(); | |
2329 | ||
2330 | timecounter_init(&adapter->clock, | |
2331 | &adapter->cycles, | |
2332 | ktime_to_ns(ktime_get_real())); | |
2333 | /* | |
2334 | * Synchronize our NIC clock against system wall clock. NIC | |
2335 | * time stamp reading requires ~3us per sample, each sample | |
2336 | * was pretty stable even under load => only require 10 | |
2337 | * samples for each offset comparison. | |
2338 | */ | |
2339 | memset(&adapter->compare, 0, sizeof(adapter->compare)); | |
2340 | adapter->compare.source = &adapter->clock; | |
2341 | adapter->compare.target = ktime_get_real; | |
2342 | adapter->compare.num_samples = 10; | |
2343 | timecompare_update(&adapter->compare, 0); | |
2344 | break; | |
2345 | case e1000_82575: | |
2346 | /* 82575 does not support timesync */ | |
2347 | default: | |
2348 | break; | |
2349 | } | |
2350 | ||
2351 | } | |
2352 | ||
9d5c8243 AK |
2353 | /** |
2354 | * igb_sw_init - Initialize general software structures (struct igb_adapter) | |
2355 | * @adapter: board private structure to initialize | |
2356 | * | |
2357 | * igb_sw_init initializes the Adapter private data structure. | |
2358 | * Fields are initialized based on PCI device information and | |
2359 | * OS network device settings (MTU size). | |
2360 | **/ | |
2361 | static int __devinit igb_sw_init(struct igb_adapter *adapter) | |
2362 | { | |
2363 | struct e1000_hw *hw = &adapter->hw; | |
2364 | struct net_device *netdev = adapter->netdev; | |
2365 | struct pci_dev *pdev = adapter->pdev; | |
2366 | ||
2367 | pci_read_config_word(pdev, PCI_COMMAND, &hw->bus.pci_cmd_word); | |
2368 | ||
68fd9910 AD |
2369 | adapter->tx_ring_count = IGB_DEFAULT_TXD; |
2370 | adapter->rx_ring_count = IGB_DEFAULT_RXD; | |
4fc82adf AD |
2371 | adapter->rx_itr_setting = IGB_DEFAULT_ITR; |
2372 | adapter->tx_itr_setting = IGB_DEFAULT_ITR; | |
2373 | ||
9d5c8243 AK |
2374 | adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; |
2375 | adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; | |
2376 | ||
12dcd86b | 2377 | spin_lock_init(&adapter->stats64_lock); |
a6b623e0 | 2378 | #ifdef CONFIG_PCI_IOV |
6b78bb1d CW |
2379 | switch (hw->mac.type) { |
2380 | case e1000_82576: | |
2381 | case e1000_i350: | |
9b082d73 SA |
2382 | if (max_vfs > 7) { |
2383 | dev_warn(&pdev->dev, | |
2384 | "Maximum of 7 VFs per PF, using max\n"); | |
2385 | adapter->vfs_allocated_count = 7; | |
2386 | } else | |
2387 | adapter->vfs_allocated_count = max_vfs; | |
6b78bb1d CW |
2388 | break; |
2389 | default: | |
2390 | break; | |
2391 | } | |
a6b623e0 | 2392 | #endif /* CONFIG_PCI_IOV */ |
a99955fc | 2393 | adapter->rss_queues = min_t(u32, IGB_MAX_RX_QUEUES, num_online_cpus()); |
665c8c8e WM |
2394 | /* i350 cannot do RSS and SR-IOV at the same time */ |
2395 | if (hw->mac.type == e1000_i350 && adapter->vfs_allocated_count) | |
2396 | adapter->rss_queues = 1; | |
a99955fc AD |
2397 | |
2398 | /* | |
2399 | * if rss_queues > 4 or vfs are going to be allocated with rss_queues | |
2400 | * then we should combine the queues into a queue pair in order to | |
2401 | * conserve interrupts due to limited supply | |
2402 | */ | |
2403 | if ((adapter->rss_queues > 4) || | |
2404 | ((adapter->rss_queues > 1) && (adapter->vfs_allocated_count > 6))) | |
2405 | adapter->flags |= IGB_FLAG_QUEUE_PAIRS; | |
2406 | ||
a6b623e0 | 2407 | /* This call may decrease the number of queues */ |
047e0030 | 2408 | if (igb_init_interrupt_scheme(adapter)) { |
9d5c8243 AK |
2409 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); |
2410 | return -ENOMEM; | |
2411 | } | |
2412 | ||
a6b623e0 AD |
2413 | igb_probe_vfs(adapter); |
2414 | ||
9d5c8243 AK |
2415 | /* Explicitly disable IRQ since the NIC can be in any state. */ |
2416 | igb_irq_disable(adapter); | |
2417 | ||
831ec0b4 CW |
2418 | if (hw->mac.type == e1000_i350) |
2419 | adapter->flags &= ~IGB_FLAG_DMAC; | |
2420 | ||
9d5c8243 AK |
2421 | set_bit(__IGB_DOWN, &adapter->state); |
2422 | return 0; | |
2423 | } | |
2424 | ||
2425 | /** | |
2426 | * igb_open - Called when a network interface is made active | |
2427 | * @netdev: network interface device structure | |
2428 | * | |
2429 | * Returns 0 on success, negative value on failure | |
2430 | * | |
2431 | * The open entry point is called when a network interface is made | |
2432 | * active by the system (IFF_UP). At this point all resources needed | |
2433 | * for transmit and receive operations are allocated, the interrupt | |
2434 | * handler is registered with the OS, the watchdog timer is started, | |
2435 | * and the stack is notified that the interface is ready. | |
2436 | **/ | |
2437 | static int igb_open(struct net_device *netdev) | |
2438 | { | |
2439 | struct igb_adapter *adapter = netdev_priv(netdev); | |
2440 | struct e1000_hw *hw = &adapter->hw; | |
2441 | int err; | |
2442 | int i; | |
2443 | ||
2444 | /* disallow open during test */ | |
2445 | if (test_bit(__IGB_TESTING, &adapter->state)) | |
2446 | return -EBUSY; | |
2447 | ||
b168dfc5 JB |
2448 | netif_carrier_off(netdev); |
2449 | ||
9d5c8243 AK |
2450 | /* allocate transmit descriptors */ |
2451 | err = igb_setup_all_tx_resources(adapter); | |
2452 | if (err) | |
2453 | goto err_setup_tx; | |
2454 | ||
2455 | /* allocate receive descriptors */ | |
2456 | err = igb_setup_all_rx_resources(adapter); | |
2457 | if (err) | |
2458 | goto err_setup_rx; | |
2459 | ||
88a268c1 | 2460 | igb_power_up_link(adapter); |
9d5c8243 | 2461 | |
9d5c8243 AK |
2462 | /* before we allocate an interrupt, we must be ready to handle it. |
2463 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt | |
2464 | * as soon as we call pci_request_irq, so we have to setup our | |
2465 | * clean_rx handler before we do so. */ | |
2466 | igb_configure(adapter); | |
2467 | ||
2468 | err = igb_request_irq(adapter); | |
2469 | if (err) | |
2470 | goto err_req_irq; | |
2471 | ||
2472 | /* From here on the code is the same as igb_up() */ | |
2473 | clear_bit(__IGB_DOWN, &adapter->state); | |
2474 | ||
047e0030 AD |
2475 | for (i = 0; i < adapter->num_q_vectors; i++) { |
2476 | struct igb_q_vector *q_vector = adapter->q_vector[i]; | |
2477 | napi_enable(&q_vector->napi); | |
2478 | } | |
9d5c8243 AK |
2479 | |
2480 | /* Clear any pending interrupts. */ | |
2481 | rd32(E1000_ICR); | |
844290e5 PW |
2482 | |
2483 | igb_irq_enable(adapter); | |
2484 | ||
d4960307 AD |
2485 | /* notify VFs that reset has been completed */ |
2486 | if (adapter->vfs_allocated_count) { | |
2487 | u32 reg_data = rd32(E1000_CTRL_EXT); | |
2488 | reg_data |= E1000_CTRL_EXT_PFRSTD; | |
2489 | wr32(E1000_CTRL_EXT, reg_data); | |
2490 | } | |
2491 | ||
d55b53ff JK |
2492 | netif_tx_start_all_queues(netdev); |
2493 | ||
25568a53 AD |
2494 | /* start the watchdog. */ |
2495 | hw->mac.get_link_status = 1; | |
2496 | schedule_work(&adapter->watchdog_task); | |
9d5c8243 AK |
2497 | |
2498 | return 0; | |
2499 | ||
2500 | err_req_irq: | |
2501 | igb_release_hw_control(adapter); | |
88a268c1 | 2502 | igb_power_down_link(adapter); |
9d5c8243 AK |
2503 | igb_free_all_rx_resources(adapter); |
2504 | err_setup_rx: | |
2505 | igb_free_all_tx_resources(adapter); | |
2506 | err_setup_tx: | |
2507 | igb_reset(adapter); | |
2508 | ||
2509 | return err; | |
2510 | } | |
2511 | ||
2512 | /** | |
2513 | * igb_close - Disables a network interface | |
2514 | * @netdev: network interface device structure | |
2515 | * | |
2516 | * Returns 0, this is not allowed to fail | |
2517 | * | |
2518 | * The close entry point is called when an interface is de-activated | |
2519 | * by the OS. The hardware is still under the driver's control, but | |
2520 | * needs to be disabled. A global MAC reset is issued to stop the | |
2521 | * hardware, and all transmit and receive resources are freed. | |
2522 | **/ | |
2523 | static int igb_close(struct net_device *netdev) | |
2524 | { | |
2525 | struct igb_adapter *adapter = netdev_priv(netdev); | |
2526 | ||
2527 | WARN_ON(test_bit(__IGB_RESETTING, &adapter->state)); | |
2528 | igb_down(adapter); | |
2529 | ||
2530 | igb_free_irq(adapter); | |
2531 | ||
2532 | igb_free_all_tx_resources(adapter); | |
2533 | igb_free_all_rx_resources(adapter); | |
2534 | ||
9d5c8243 AK |
2535 | return 0; |
2536 | } | |
2537 | ||
2538 | /** | |
2539 | * igb_setup_tx_resources - allocate Tx resources (Descriptors) | |
9d5c8243 AK |
2540 | * @tx_ring: tx descriptor ring (for a specific queue) to setup |
2541 | * | |
2542 | * Return 0 on success, negative on failure | |
2543 | **/ | |
80785298 | 2544 | int igb_setup_tx_resources(struct igb_ring *tx_ring) |
9d5c8243 | 2545 | { |
59d71989 | 2546 | struct device *dev = tx_ring->dev; |
9d5c8243 AK |
2547 | int size; |
2548 | ||
2549 | size = sizeof(struct igb_buffer) * tx_ring->count; | |
89bf67f1 | 2550 | tx_ring->buffer_info = vzalloc(size); |
9d5c8243 AK |
2551 | if (!tx_ring->buffer_info) |
2552 | goto err; | |
9d5c8243 AK |
2553 | |
2554 | /* round up to nearest 4K */ | |
85e8d004 | 2555 | tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc); |
9d5c8243 AK |
2556 | tx_ring->size = ALIGN(tx_ring->size, 4096); |
2557 | ||
59d71989 AD |
2558 | tx_ring->desc = dma_alloc_coherent(dev, |
2559 | tx_ring->size, | |
2560 | &tx_ring->dma, | |
2561 | GFP_KERNEL); | |
9d5c8243 AK |
2562 | |
2563 | if (!tx_ring->desc) | |
2564 | goto err; | |
2565 | ||
9d5c8243 AK |
2566 | tx_ring->next_to_use = 0; |
2567 | tx_ring->next_to_clean = 0; | |
9d5c8243 AK |
2568 | return 0; |
2569 | ||
2570 | err: | |
2571 | vfree(tx_ring->buffer_info); | |
59d71989 | 2572 | dev_err(dev, |
9d5c8243 AK |
2573 | "Unable to allocate memory for the transmit descriptor ring\n"); |
2574 | return -ENOMEM; | |
2575 | } | |
2576 | ||
2577 | /** | |
2578 | * igb_setup_all_tx_resources - wrapper to allocate Tx resources | |
2579 | * (Descriptors) for all queues | |
2580 | * @adapter: board private structure | |
2581 | * | |
2582 | * Return 0 on success, negative on failure | |
2583 | **/ | |
2584 | static int igb_setup_all_tx_resources(struct igb_adapter *adapter) | |
2585 | { | |
439705e1 | 2586 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
2587 | int i, err = 0; |
2588 | ||
2589 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
3025a446 | 2590 | err = igb_setup_tx_resources(adapter->tx_ring[i]); |
9d5c8243 | 2591 | if (err) { |
439705e1 | 2592 | dev_err(&pdev->dev, |
9d5c8243 AK |
2593 | "Allocation for Tx Queue %u failed\n", i); |
2594 | for (i--; i >= 0; i--) | |
3025a446 | 2595 | igb_free_tx_resources(adapter->tx_ring[i]); |
9d5c8243 AK |
2596 | break; |
2597 | } | |
2598 | } | |
2599 | ||
a99955fc | 2600 | for (i = 0; i < IGB_ABS_MAX_TX_QUEUES; i++) { |
439705e1 | 2601 | int r_idx = i % adapter->num_tx_queues; |
3025a446 | 2602 | adapter->multi_tx_table[i] = adapter->tx_ring[r_idx]; |
eebbbdba | 2603 | } |
9d5c8243 AK |
2604 | return err; |
2605 | } | |
2606 | ||
2607 | /** | |
85b430b4 AD |
2608 | * igb_setup_tctl - configure the transmit control registers |
2609 | * @adapter: Board private structure | |
9d5c8243 | 2610 | **/ |
d7ee5b3a | 2611 | void igb_setup_tctl(struct igb_adapter *adapter) |
9d5c8243 | 2612 | { |
9d5c8243 AK |
2613 | struct e1000_hw *hw = &adapter->hw; |
2614 | u32 tctl; | |
9d5c8243 | 2615 | |
85b430b4 AD |
2616 | /* disable queue 0 which is enabled by default on 82575 and 82576 */ |
2617 | wr32(E1000_TXDCTL(0), 0); | |
9d5c8243 AK |
2618 | |
2619 | /* Program the Transmit Control Register */ | |
9d5c8243 AK |
2620 | tctl = rd32(E1000_TCTL); |
2621 | tctl &= ~E1000_TCTL_CT; | |
2622 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | | |
2623 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); | |
2624 | ||
2625 | igb_config_collision_dist(hw); | |
2626 | ||
9d5c8243 AK |
2627 | /* Enable transmits */ |
2628 | tctl |= E1000_TCTL_EN; | |
2629 | ||
2630 | wr32(E1000_TCTL, tctl); | |
2631 | } | |
2632 | ||
85b430b4 AD |
2633 | /** |
2634 | * igb_configure_tx_ring - Configure transmit ring after Reset | |
2635 | * @adapter: board private structure | |
2636 | * @ring: tx ring to configure | |
2637 | * | |
2638 | * Configure a transmit ring after a reset. | |
2639 | **/ | |
d7ee5b3a AD |
2640 | void igb_configure_tx_ring(struct igb_adapter *adapter, |
2641 | struct igb_ring *ring) | |
85b430b4 AD |
2642 | { |
2643 | struct e1000_hw *hw = &adapter->hw; | |
2644 | u32 txdctl; | |
2645 | u64 tdba = ring->dma; | |
2646 | int reg_idx = ring->reg_idx; | |
2647 | ||
2648 | /* disable the queue */ | |
2649 | txdctl = rd32(E1000_TXDCTL(reg_idx)); | |
2650 | wr32(E1000_TXDCTL(reg_idx), | |
2651 | txdctl & ~E1000_TXDCTL_QUEUE_ENABLE); | |
2652 | wrfl(); | |
2653 | mdelay(10); | |
2654 | ||
2655 | wr32(E1000_TDLEN(reg_idx), | |
2656 | ring->count * sizeof(union e1000_adv_tx_desc)); | |
2657 | wr32(E1000_TDBAL(reg_idx), | |
2658 | tdba & 0x00000000ffffffffULL); | |
2659 | wr32(E1000_TDBAH(reg_idx), tdba >> 32); | |
2660 | ||
fce99e34 AD |
2661 | ring->head = hw->hw_addr + E1000_TDH(reg_idx); |
2662 | ring->tail = hw->hw_addr + E1000_TDT(reg_idx); | |
2663 | writel(0, ring->head); | |
2664 | writel(0, ring->tail); | |
85b430b4 AD |
2665 | |
2666 | txdctl |= IGB_TX_PTHRESH; | |
2667 | txdctl |= IGB_TX_HTHRESH << 8; | |
2668 | txdctl |= IGB_TX_WTHRESH << 16; | |
2669 | ||
2670 | txdctl |= E1000_TXDCTL_QUEUE_ENABLE; | |
2671 | wr32(E1000_TXDCTL(reg_idx), txdctl); | |
2672 | } | |
2673 | ||
2674 | /** | |
2675 | * igb_configure_tx - Configure transmit Unit after Reset | |
2676 | * @adapter: board private structure | |
2677 | * | |
2678 | * Configure the Tx unit of the MAC after a reset. | |
2679 | **/ | |
2680 | static void igb_configure_tx(struct igb_adapter *adapter) | |
2681 | { | |
2682 | int i; | |
2683 | ||
2684 | for (i = 0; i < adapter->num_tx_queues; i++) | |
3025a446 | 2685 | igb_configure_tx_ring(adapter, adapter->tx_ring[i]); |
85b430b4 AD |
2686 | } |
2687 | ||
9d5c8243 AK |
2688 | /** |
2689 | * igb_setup_rx_resources - allocate Rx resources (Descriptors) | |
9d5c8243 AK |
2690 | * @rx_ring: rx descriptor ring (for a specific queue) to setup |
2691 | * | |
2692 | * Returns 0 on success, negative on failure | |
2693 | **/ | |
80785298 | 2694 | int igb_setup_rx_resources(struct igb_ring *rx_ring) |
9d5c8243 | 2695 | { |
59d71989 | 2696 | struct device *dev = rx_ring->dev; |
9d5c8243 AK |
2697 | int size, desc_len; |
2698 | ||
2699 | size = sizeof(struct igb_buffer) * rx_ring->count; | |
89bf67f1 | 2700 | rx_ring->buffer_info = vzalloc(size); |
9d5c8243 AK |
2701 | if (!rx_ring->buffer_info) |
2702 | goto err; | |
9d5c8243 AK |
2703 | |
2704 | desc_len = sizeof(union e1000_adv_rx_desc); | |
2705 | ||
2706 | /* Round up to nearest 4K */ | |
2707 | rx_ring->size = rx_ring->count * desc_len; | |
2708 | rx_ring->size = ALIGN(rx_ring->size, 4096); | |
2709 | ||
59d71989 AD |
2710 | rx_ring->desc = dma_alloc_coherent(dev, |
2711 | rx_ring->size, | |
2712 | &rx_ring->dma, | |
2713 | GFP_KERNEL); | |
9d5c8243 AK |
2714 | |
2715 | if (!rx_ring->desc) | |
2716 | goto err; | |
2717 | ||
2718 | rx_ring->next_to_clean = 0; | |
2719 | rx_ring->next_to_use = 0; | |
9d5c8243 | 2720 | |
9d5c8243 AK |
2721 | return 0; |
2722 | ||
2723 | err: | |
2724 | vfree(rx_ring->buffer_info); | |
439705e1 | 2725 | rx_ring->buffer_info = NULL; |
59d71989 AD |
2726 | dev_err(dev, "Unable to allocate memory for the receive descriptor" |
2727 | " ring\n"); | |
9d5c8243 AK |
2728 | return -ENOMEM; |
2729 | } | |
2730 | ||
2731 | /** | |
2732 | * igb_setup_all_rx_resources - wrapper to allocate Rx resources | |
2733 | * (Descriptors) for all queues | |
2734 | * @adapter: board private structure | |
2735 | * | |
2736 | * Return 0 on success, negative on failure | |
2737 | **/ | |
2738 | static int igb_setup_all_rx_resources(struct igb_adapter *adapter) | |
2739 | { | |
439705e1 | 2740 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
2741 | int i, err = 0; |
2742 | ||
2743 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
3025a446 | 2744 | err = igb_setup_rx_resources(adapter->rx_ring[i]); |
9d5c8243 | 2745 | if (err) { |
439705e1 | 2746 | dev_err(&pdev->dev, |
9d5c8243 AK |
2747 | "Allocation for Rx Queue %u failed\n", i); |
2748 | for (i--; i >= 0; i--) | |
3025a446 | 2749 | igb_free_rx_resources(adapter->rx_ring[i]); |
9d5c8243 AK |
2750 | break; |
2751 | } | |
2752 | } | |
2753 | ||
2754 | return err; | |
2755 | } | |
2756 | ||
06cf2666 AD |
2757 | /** |
2758 | * igb_setup_mrqc - configure the multiple receive queue control registers | |
2759 | * @adapter: Board private structure | |
2760 | **/ | |
2761 | static void igb_setup_mrqc(struct igb_adapter *adapter) | |
2762 | { | |
2763 | struct e1000_hw *hw = &adapter->hw; | |
2764 | u32 mrqc, rxcsum; | |
2765 | u32 j, num_rx_queues, shift = 0, shift2 = 0; | |
2766 | union e1000_reta { | |
2767 | u32 dword; | |
2768 | u8 bytes[4]; | |
2769 | } reta; | |
2770 | static const u8 rsshash[40] = { | |
2771 | 0x6d, 0x5a, 0x56, 0xda, 0x25, 0x5b, 0x0e, 0xc2, 0x41, 0x67, | |
2772 | 0x25, 0x3d, 0x43, 0xa3, 0x8f, 0xb0, 0xd0, 0xca, 0x2b, 0xcb, | |
2773 | 0xae, 0x7b, 0x30, 0xb4, 0x77, 0xcb, 0x2d, 0xa3, 0x80, 0x30, | |
2774 | 0xf2, 0x0c, 0x6a, 0x42, 0xb7, 0x3b, 0xbe, 0xac, 0x01, 0xfa }; | |
2775 | ||
2776 | /* Fill out hash function seeds */ | |
2777 | for (j = 0; j < 10; j++) { | |
2778 | u32 rsskey = rsshash[(j * 4)]; | |
2779 | rsskey |= rsshash[(j * 4) + 1] << 8; | |
2780 | rsskey |= rsshash[(j * 4) + 2] << 16; | |
2781 | rsskey |= rsshash[(j * 4) + 3] << 24; | |
2782 | array_wr32(E1000_RSSRK(0), j, rsskey); | |
2783 | } | |
2784 | ||
a99955fc | 2785 | num_rx_queues = adapter->rss_queues; |
06cf2666 AD |
2786 | |
2787 | if (adapter->vfs_allocated_count) { | |
2788 | /* 82575 and 82576 supports 2 RSS queues for VMDq */ | |
2789 | switch (hw->mac.type) { | |
d2ba2ed8 | 2790 | case e1000_i350: |
55cac248 AD |
2791 | case e1000_82580: |
2792 | num_rx_queues = 1; | |
2793 | shift = 0; | |
2794 | break; | |
06cf2666 AD |
2795 | case e1000_82576: |
2796 | shift = 3; | |
2797 | num_rx_queues = 2; | |
2798 | break; | |
2799 | case e1000_82575: | |
2800 | shift = 2; | |
2801 | shift2 = 6; | |
2802 | default: | |
2803 | break; | |
2804 | } | |
2805 | } else { | |
2806 | if (hw->mac.type == e1000_82575) | |
2807 | shift = 6; | |
2808 | } | |
2809 | ||
2810 | for (j = 0; j < (32 * 4); j++) { | |
2811 | reta.bytes[j & 3] = (j % num_rx_queues) << shift; | |
2812 | if (shift2) | |
2813 | reta.bytes[j & 3] |= num_rx_queues << shift2; | |
2814 | if ((j & 3) == 3) | |
2815 | wr32(E1000_RETA(j >> 2), reta.dword); | |
2816 | } | |
2817 | ||
2818 | /* | |
2819 | * Disable raw packet checksumming so that RSS hash is placed in | |
2820 | * descriptor on writeback. No need to enable TCP/UDP/IP checksum | |
2821 | * offloads as they are enabled by default | |
2822 | */ | |
2823 | rxcsum = rd32(E1000_RXCSUM); | |
2824 | rxcsum |= E1000_RXCSUM_PCSD; | |
2825 | ||
2826 | if (adapter->hw.mac.type >= e1000_82576) | |
2827 | /* Enable Receive Checksum Offload for SCTP */ | |
2828 | rxcsum |= E1000_RXCSUM_CRCOFL; | |
2829 | ||
2830 | /* Don't need to set TUOFL or IPOFL, they default to 1 */ | |
2831 | wr32(E1000_RXCSUM, rxcsum); | |
2832 | ||
2833 | /* If VMDq is enabled then we set the appropriate mode for that, else | |
2834 | * we default to RSS so that an RSS hash is calculated per packet even | |
2835 | * if we are only using one queue */ | |
2836 | if (adapter->vfs_allocated_count) { | |
2837 | if (hw->mac.type > e1000_82575) { | |
2838 | /* Set the default pool for the PF's first queue */ | |
2839 | u32 vtctl = rd32(E1000_VT_CTL); | |
2840 | vtctl &= ~(E1000_VT_CTL_DEFAULT_POOL_MASK | | |
2841 | E1000_VT_CTL_DISABLE_DEF_POOL); | |
2842 | vtctl |= adapter->vfs_allocated_count << | |
2843 | E1000_VT_CTL_DEFAULT_POOL_SHIFT; | |
2844 | wr32(E1000_VT_CTL, vtctl); | |
2845 | } | |
a99955fc | 2846 | if (adapter->rss_queues > 1) |
06cf2666 AD |
2847 | mrqc = E1000_MRQC_ENABLE_VMDQ_RSS_2Q; |
2848 | else | |
2849 | mrqc = E1000_MRQC_ENABLE_VMDQ; | |
2850 | } else { | |
2851 | mrqc = E1000_MRQC_ENABLE_RSS_4Q; | |
2852 | } | |
2853 | igb_vmm_control(adapter); | |
2854 | ||
4478a9cd AD |
2855 | /* |
2856 | * Generate RSS hash based on TCP port numbers and/or | |
2857 | * IPv4/v6 src and dst addresses since UDP cannot be | |
2858 | * hashed reliably due to IP fragmentation | |
2859 | */ | |
2860 | mrqc |= E1000_MRQC_RSS_FIELD_IPV4 | | |
2861 | E1000_MRQC_RSS_FIELD_IPV4_TCP | | |
2862 | E1000_MRQC_RSS_FIELD_IPV6 | | |
2863 | E1000_MRQC_RSS_FIELD_IPV6_TCP | | |
2864 | E1000_MRQC_RSS_FIELD_IPV6_TCP_EX; | |
06cf2666 AD |
2865 | |
2866 | wr32(E1000_MRQC, mrqc); | |
2867 | } | |
2868 | ||
9d5c8243 AK |
2869 | /** |
2870 | * igb_setup_rctl - configure the receive control registers | |
2871 | * @adapter: Board private structure | |
2872 | **/ | |
d7ee5b3a | 2873 | void igb_setup_rctl(struct igb_adapter *adapter) |
9d5c8243 AK |
2874 | { |
2875 | struct e1000_hw *hw = &adapter->hw; | |
2876 | u32 rctl; | |
9d5c8243 AK |
2877 | |
2878 | rctl = rd32(E1000_RCTL); | |
2879 | ||
2880 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
69d728ba | 2881 | rctl &= ~(E1000_RCTL_LBM_TCVR | E1000_RCTL_LBM_MAC); |
9d5c8243 | 2882 | |
69d728ba | 2883 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_RDMTS_HALF | |
28b0759c | 2884 | (hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT); |
9d5c8243 | 2885 | |
87cb7e8c AK |
2886 | /* |
2887 | * enable stripping of CRC. It's unlikely this will break BMC | |
2888 | * redirection as it did with e1000. Newer features require | |
2889 | * that the HW strips the CRC. | |
73cd78f1 | 2890 | */ |
87cb7e8c | 2891 | rctl |= E1000_RCTL_SECRC; |
9d5c8243 | 2892 | |
559e9c49 | 2893 | /* disable store bad packets and clear size bits. */ |
ec54d7d6 | 2894 | rctl &= ~(E1000_RCTL_SBP | E1000_RCTL_SZ_256); |
9d5c8243 | 2895 | |
6ec43fe6 AD |
2896 | /* enable LPE to prevent packets larger than max_frame_size */ |
2897 | rctl |= E1000_RCTL_LPE; | |
9d5c8243 | 2898 | |
952f72a8 AD |
2899 | /* disable queue 0 to prevent tail write w/o re-config */ |
2900 | wr32(E1000_RXDCTL(0), 0); | |
9d5c8243 | 2901 | |
e1739522 AD |
2902 | /* Attention!!! For SR-IOV PF driver operations you must enable |
2903 | * queue drop for all VF and PF queues to prevent head of line blocking | |
2904 | * if an un-trusted VF does not provide descriptors to hardware. | |
2905 | */ | |
2906 | if (adapter->vfs_allocated_count) { | |
e1739522 AD |
2907 | /* set all queue drop enable bits */ |
2908 | wr32(E1000_QDE, ALL_QUEUES); | |
e1739522 AD |
2909 | } |
2910 | ||
9d5c8243 AK |
2911 | wr32(E1000_RCTL, rctl); |
2912 | } | |
2913 | ||
7d5753f0 AD |
2914 | static inline int igb_set_vf_rlpml(struct igb_adapter *adapter, int size, |
2915 | int vfn) | |
2916 | { | |
2917 | struct e1000_hw *hw = &adapter->hw; | |
2918 | u32 vmolr; | |
2919 | ||
2920 | /* if it isn't the PF check to see if VFs are enabled and | |
2921 | * increase the size to support vlan tags */ | |
2922 | if (vfn < adapter->vfs_allocated_count && | |
2923 | adapter->vf_data[vfn].vlans_enabled) | |
2924 | size += VLAN_TAG_SIZE; | |
2925 | ||
2926 | vmolr = rd32(E1000_VMOLR(vfn)); | |
2927 | vmolr &= ~E1000_VMOLR_RLPML_MASK; | |
2928 | vmolr |= size | E1000_VMOLR_LPE; | |
2929 | wr32(E1000_VMOLR(vfn), vmolr); | |
2930 | ||
2931 | return 0; | |
2932 | } | |
2933 | ||
e1739522 AD |
2934 | /** |
2935 | * igb_rlpml_set - set maximum receive packet size | |
2936 | * @adapter: board private structure | |
2937 | * | |
2938 | * Configure maximum receivable packet size. | |
2939 | **/ | |
2940 | static void igb_rlpml_set(struct igb_adapter *adapter) | |
2941 | { | |
2942 | u32 max_frame_size = adapter->max_frame_size; | |
2943 | struct e1000_hw *hw = &adapter->hw; | |
2944 | u16 pf_id = adapter->vfs_allocated_count; | |
2945 | ||
2946 | if (adapter->vlgrp) | |
2947 | max_frame_size += VLAN_TAG_SIZE; | |
2948 | ||
2949 | /* if vfs are enabled we set RLPML to the largest possible request | |
2950 | * size and set the VMOLR RLPML to the size we need */ | |
2951 | if (pf_id) { | |
2952 | igb_set_vf_rlpml(adapter, max_frame_size, pf_id); | |
7d5753f0 | 2953 | max_frame_size = MAX_JUMBO_FRAME_SIZE; |
e1739522 AD |
2954 | } |
2955 | ||
2956 | wr32(E1000_RLPML, max_frame_size); | |
2957 | } | |
2958 | ||
8151d294 WM |
2959 | static inline void igb_set_vmolr(struct igb_adapter *adapter, |
2960 | int vfn, bool aupe) | |
7d5753f0 AD |
2961 | { |
2962 | struct e1000_hw *hw = &adapter->hw; | |
2963 | u32 vmolr; | |
2964 | ||
2965 | /* | |
2966 | * This register exists only on 82576 and newer so if we are older then | |
2967 | * we should exit and do nothing | |
2968 | */ | |
2969 | if (hw->mac.type < e1000_82576) | |
2970 | return; | |
2971 | ||
2972 | vmolr = rd32(E1000_VMOLR(vfn)); | |
8151d294 WM |
2973 | vmolr |= E1000_VMOLR_STRVLAN; /* Strip vlan tags */ |
2974 | if (aupe) | |
2975 | vmolr |= E1000_VMOLR_AUPE; /* Accept untagged packets */ | |
2976 | else | |
2977 | vmolr &= ~(E1000_VMOLR_AUPE); /* Tagged packets ONLY */ | |
7d5753f0 AD |
2978 | |
2979 | /* clear all bits that might not be set */ | |
2980 | vmolr &= ~(E1000_VMOLR_BAM | E1000_VMOLR_RSSE); | |
2981 | ||
a99955fc | 2982 | if (adapter->rss_queues > 1 && vfn == adapter->vfs_allocated_count) |
7d5753f0 AD |
2983 | vmolr |= E1000_VMOLR_RSSE; /* enable RSS */ |
2984 | /* | |
2985 | * for VMDq only allow the VFs and pool 0 to accept broadcast and | |
2986 | * multicast packets | |
2987 | */ | |
2988 | if (vfn <= adapter->vfs_allocated_count) | |
2989 | vmolr |= E1000_VMOLR_BAM; /* Accept broadcast */ | |
2990 | ||
2991 | wr32(E1000_VMOLR(vfn), vmolr); | |
2992 | } | |
2993 | ||
85b430b4 AD |
2994 | /** |
2995 | * igb_configure_rx_ring - Configure a receive ring after Reset | |
2996 | * @adapter: board private structure | |
2997 | * @ring: receive ring to be configured | |
2998 | * | |
2999 | * Configure the Rx unit of the MAC after a reset. | |
3000 | **/ | |
d7ee5b3a AD |
3001 | void igb_configure_rx_ring(struct igb_adapter *adapter, |
3002 | struct igb_ring *ring) | |
85b430b4 AD |
3003 | { |
3004 | struct e1000_hw *hw = &adapter->hw; | |
3005 | u64 rdba = ring->dma; | |
3006 | int reg_idx = ring->reg_idx; | |
952f72a8 | 3007 | u32 srrctl, rxdctl; |
85b430b4 AD |
3008 | |
3009 | /* disable the queue */ | |
3010 | rxdctl = rd32(E1000_RXDCTL(reg_idx)); | |
3011 | wr32(E1000_RXDCTL(reg_idx), | |
3012 | rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE); | |
3013 | ||
3014 | /* Set DMA base address registers */ | |
3015 | wr32(E1000_RDBAL(reg_idx), | |
3016 | rdba & 0x00000000ffffffffULL); | |
3017 | wr32(E1000_RDBAH(reg_idx), rdba >> 32); | |
3018 | wr32(E1000_RDLEN(reg_idx), | |
3019 | ring->count * sizeof(union e1000_adv_rx_desc)); | |
3020 | ||
3021 | /* initialize head and tail */ | |
fce99e34 AD |
3022 | ring->head = hw->hw_addr + E1000_RDH(reg_idx); |
3023 | ring->tail = hw->hw_addr + E1000_RDT(reg_idx); | |
3024 | writel(0, ring->head); | |
3025 | writel(0, ring->tail); | |
85b430b4 | 3026 | |
952f72a8 | 3027 | /* set descriptor configuration */ |
4c844851 AD |
3028 | if (ring->rx_buffer_len < IGB_RXBUFFER_1024) { |
3029 | srrctl = ALIGN(ring->rx_buffer_len, 64) << | |
952f72a8 AD |
3030 | E1000_SRRCTL_BSIZEHDRSIZE_SHIFT; |
3031 | #if (PAGE_SIZE / 2) > IGB_RXBUFFER_16384 | |
3032 | srrctl |= IGB_RXBUFFER_16384 >> | |
3033 | E1000_SRRCTL_BSIZEPKT_SHIFT; | |
3034 | #else | |
3035 | srrctl |= (PAGE_SIZE / 2) >> | |
3036 | E1000_SRRCTL_BSIZEPKT_SHIFT; | |
3037 | #endif | |
3038 | srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; | |
3039 | } else { | |
4c844851 | 3040 | srrctl = ALIGN(ring->rx_buffer_len, 1024) >> |
952f72a8 AD |
3041 | E1000_SRRCTL_BSIZEPKT_SHIFT; |
3042 | srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF; | |
3043 | } | |
757b77e2 NN |
3044 | if (hw->mac.type == e1000_82580) |
3045 | srrctl |= E1000_SRRCTL_TIMESTAMP; | |
e6bdb6fe NN |
3046 | /* Only set Drop Enable if we are supporting multiple queues */ |
3047 | if (adapter->vfs_allocated_count || adapter->num_rx_queues > 1) | |
3048 | srrctl |= E1000_SRRCTL_DROP_EN; | |
952f72a8 AD |
3049 | |
3050 | wr32(E1000_SRRCTL(reg_idx), srrctl); | |
3051 | ||
7d5753f0 | 3052 | /* set filtering for VMDQ pools */ |
8151d294 | 3053 | igb_set_vmolr(adapter, reg_idx & 0x7, true); |
7d5753f0 | 3054 | |
85b430b4 AD |
3055 | /* enable receive descriptor fetching */ |
3056 | rxdctl = rd32(E1000_RXDCTL(reg_idx)); | |
3057 | rxdctl |= E1000_RXDCTL_QUEUE_ENABLE; | |
3058 | rxdctl &= 0xFFF00000; | |
3059 | rxdctl |= IGB_RX_PTHRESH; | |
3060 | rxdctl |= IGB_RX_HTHRESH << 8; | |
3061 | rxdctl |= IGB_RX_WTHRESH << 16; | |
3062 | wr32(E1000_RXDCTL(reg_idx), rxdctl); | |
3063 | } | |
3064 | ||
9d5c8243 AK |
3065 | /** |
3066 | * igb_configure_rx - Configure receive Unit after Reset | |
3067 | * @adapter: board private structure | |
3068 | * | |
3069 | * Configure the Rx unit of the MAC after a reset. | |
3070 | **/ | |
3071 | static void igb_configure_rx(struct igb_adapter *adapter) | |
3072 | { | |
9107584e | 3073 | int i; |
9d5c8243 | 3074 | |
68d480c4 AD |
3075 | /* set UTA to appropriate mode */ |
3076 | igb_set_uta(adapter); | |
3077 | ||
26ad9178 AD |
3078 | /* set the correct pool for the PF default MAC address in entry 0 */ |
3079 | igb_rar_set_qsel(adapter, adapter->hw.mac.addr, 0, | |
3080 | adapter->vfs_allocated_count); | |
3081 | ||
06cf2666 AD |
3082 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
3083 | * the Base and Length of the Rx Descriptor Ring */ | |
3084 | for (i = 0; i < adapter->num_rx_queues; i++) | |
3025a446 | 3085 | igb_configure_rx_ring(adapter, adapter->rx_ring[i]); |
9d5c8243 AK |
3086 | } |
3087 | ||
3088 | /** | |
3089 | * igb_free_tx_resources - Free Tx Resources per Queue | |
9d5c8243 AK |
3090 | * @tx_ring: Tx descriptor ring for a specific queue |
3091 | * | |
3092 | * Free all transmit software resources | |
3093 | **/ | |
68fd9910 | 3094 | void igb_free_tx_resources(struct igb_ring *tx_ring) |
9d5c8243 | 3095 | { |
3b644cf6 | 3096 | igb_clean_tx_ring(tx_ring); |
9d5c8243 AK |
3097 | |
3098 | vfree(tx_ring->buffer_info); | |
3099 | tx_ring->buffer_info = NULL; | |
3100 | ||
439705e1 AD |
3101 | /* if not set, then don't free */ |
3102 | if (!tx_ring->desc) | |
3103 | return; | |
3104 | ||
59d71989 AD |
3105 | dma_free_coherent(tx_ring->dev, tx_ring->size, |
3106 | tx_ring->desc, tx_ring->dma); | |
9d5c8243 AK |
3107 | |
3108 | tx_ring->desc = NULL; | |
3109 | } | |
3110 | ||
3111 | /** | |
3112 | * igb_free_all_tx_resources - Free Tx Resources for All Queues | |
3113 | * @adapter: board private structure | |
3114 | * | |
3115 | * Free all transmit software resources | |
3116 | **/ | |
3117 | static void igb_free_all_tx_resources(struct igb_adapter *adapter) | |
3118 | { | |
3119 | int i; | |
3120 | ||
3121 | for (i = 0; i < adapter->num_tx_queues; i++) | |
3025a446 | 3122 | igb_free_tx_resources(adapter->tx_ring[i]); |
9d5c8243 AK |
3123 | } |
3124 | ||
b1a436c3 AD |
3125 | void igb_unmap_and_free_tx_resource(struct igb_ring *tx_ring, |
3126 | struct igb_buffer *buffer_info) | |
9d5c8243 | 3127 | { |
6366ad33 AD |
3128 | if (buffer_info->dma) { |
3129 | if (buffer_info->mapped_as_page) | |
59d71989 | 3130 | dma_unmap_page(tx_ring->dev, |
6366ad33 AD |
3131 | buffer_info->dma, |
3132 | buffer_info->length, | |
59d71989 | 3133 | DMA_TO_DEVICE); |
6366ad33 | 3134 | else |
59d71989 | 3135 | dma_unmap_single(tx_ring->dev, |
6366ad33 AD |
3136 | buffer_info->dma, |
3137 | buffer_info->length, | |
59d71989 | 3138 | DMA_TO_DEVICE); |
6366ad33 AD |
3139 | buffer_info->dma = 0; |
3140 | } | |
9d5c8243 AK |
3141 | if (buffer_info->skb) { |
3142 | dev_kfree_skb_any(buffer_info->skb); | |
3143 | buffer_info->skb = NULL; | |
3144 | } | |
3145 | buffer_info->time_stamp = 0; | |
6366ad33 AD |
3146 | buffer_info->length = 0; |
3147 | buffer_info->next_to_watch = 0; | |
3148 | buffer_info->mapped_as_page = false; | |
9d5c8243 AK |
3149 | } |
3150 | ||
3151 | /** | |
3152 | * igb_clean_tx_ring - Free Tx Buffers | |
9d5c8243 AK |
3153 | * @tx_ring: ring to be cleaned |
3154 | **/ | |
3b644cf6 | 3155 | static void igb_clean_tx_ring(struct igb_ring *tx_ring) |
9d5c8243 AK |
3156 | { |
3157 | struct igb_buffer *buffer_info; | |
3158 | unsigned long size; | |
3159 | unsigned int i; | |
3160 | ||
3161 | if (!tx_ring->buffer_info) | |
3162 | return; | |
3163 | /* Free all the Tx ring sk_buffs */ | |
3164 | ||
3165 | for (i = 0; i < tx_ring->count; i++) { | |
3166 | buffer_info = &tx_ring->buffer_info[i]; | |
80785298 | 3167 | igb_unmap_and_free_tx_resource(tx_ring, buffer_info); |
9d5c8243 AK |
3168 | } |
3169 | ||
3170 | size = sizeof(struct igb_buffer) * tx_ring->count; | |
3171 | memset(tx_ring->buffer_info, 0, size); | |
3172 | ||
3173 | /* Zero out the descriptor ring */ | |
9d5c8243 AK |
3174 | memset(tx_ring->desc, 0, tx_ring->size); |
3175 | ||
3176 | tx_ring->next_to_use = 0; | |
3177 | tx_ring->next_to_clean = 0; | |
9d5c8243 AK |
3178 | } |
3179 | ||
3180 | /** | |
3181 | * igb_clean_all_tx_rings - Free Tx Buffers for all queues | |
3182 | * @adapter: board private structure | |
3183 | **/ | |
3184 | static void igb_clean_all_tx_rings(struct igb_adapter *adapter) | |
3185 | { | |
3186 | int i; | |
3187 | ||
3188 | for (i = 0; i < adapter->num_tx_queues; i++) | |
3025a446 | 3189 | igb_clean_tx_ring(adapter->tx_ring[i]); |
9d5c8243 AK |
3190 | } |
3191 | ||
3192 | /** | |
3193 | * igb_free_rx_resources - Free Rx Resources | |
9d5c8243 AK |
3194 | * @rx_ring: ring to clean the resources from |
3195 | * | |
3196 | * Free all receive software resources | |
3197 | **/ | |
68fd9910 | 3198 | void igb_free_rx_resources(struct igb_ring *rx_ring) |
9d5c8243 | 3199 | { |
3b644cf6 | 3200 | igb_clean_rx_ring(rx_ring); |
9d5c8243 AK |
3201 | |
3202 | vfree(rx_ring->buffer_info); | |
3203 | rx_ring->buffer_info = NULL; | |
3204 | ||
439705e1 AD |
3205 | /* if not set, then don't free */ |
3206 | if (!rx_ring->desc) | |
3207 | return; | |
3208 | ||
59d71989 AD |
3209 | dma_free_coherent(rx_ring->dev, rx_ring->size, |
3210 | rx_ring->desc, rx_ring->dma); | |
9d5c8243 AK |
3211 | |
3212 | rx_ring->desc = NULL; | |
3213 | } | |
3214 | ||
3215 | /** | |
3216 | * igb_free_all_rx_resources - Free Rx Resources for All Queues | |
3217 | * @adapter: board private structure | |
3218 | * | |
3219 | * Free all receive software resources | |
3220 | **/ | |
3221 | static void igb_free_all_rx_resources(struct igb_adapter *adapter) | |
3222 | { | |
3223 | int i; | |
3224 | ||
3225 | for (i = 0; i < adapter->num_rx_queues; i++) | |
3025a446 | 3226 | igb_free_rx_resources(adapter->rx_ring[i]); |
9d5c8243 AK |
3227 | } |
3228 | ||
3229 | /** | |
3230 | * igb_clean_rx_ring - Free Rx Buffers per Queue | |
9d5c8243 AK |
3231 | * @rx_ring: ring to free buffers from |
3232 | **/ | |
3b644cf6 | 3233 | static void igb_clean_rx_ring(struct igb_ring *rx_ring) |
9d5c8243 AK |
3234 | { |
3235 | struct igb_buffer *buffer_info; | |
9d5c8243 AK |
3236 | unsigned long size; |
3237 | unsigned int i; | |
3238 | ||
3239 | if (!rx_ring->buffer_info) | |
3240 | return; | |
439705e1 | 3241 | |
9d5c8243 AK |
3242 | /* Free all the Rx ring sk_buffs */ |
3243 | for (i = 0; i < rx_ring->count; i++) { | |
3244 | buffer_info = &rx_ring->buffer_info[i]; | |
3245 | if (buffer_info->dma) { | |
59d71989 | 3246 | dma_unmap_single(rx_ring->dev, |
80785298 | 3247 | buffer_info->dma, |
4c844851 | 3248 | rx_ring->rx_buffer_len, |
59d71989 | 3249 | DMA_FROM_DEVICE); |
9d5c8243 AK |
3250 | buffer_info->dma = 0; |
3251 | } | |
3252 | ||
3253 | if (buffer_info->skb) { | |
3254 | dev_kfree_skb(buffer_info->skb); | |
3255 | buffer_info->skb = NULL; | |
3256 | } | |
6ec43fe6 | 3257 | if (buffer_info->page_dma) { |
59d71989 | 3258 | dma_unmap_page(rx_ring->dev, |
80785298 | 3259 | buffer_info->page_dma, |
6ec43fe6 | 3260 | PAGE_SIZE / 2, |
59d71989 | 3261 | DMA_FROM_DEVICE); |
6ec43fe6 AD |
3262 | buffer_info->page_dma = 0; |
3263 | } | |
9d5c8243 | 3264 | if (buffer_info->page) { |
9d5c8243 AK |
3265 | put_page(buffer_info->page); |
3266 | buffer_info->page = NULL; | |
bf36c1a0 | 3267 | buffer_info->page_offset = 0; |
9d5c8243 AK |
3268 | } |
3269 | } | |
3270 | ||
9d5c8243 AK |
3271 | size = sizeof(struct igb_buffer) * rx_ring->count; |
3272 | memset(rx_ring->buffer_info, 0, size); | |
3273 | ||
3274 | /* Zero out the descriptor ring */ | |
3275 | memset(rx_ring->desc, 0, rx_ring->size); | |
3276 | ||
3277 | rx_ring->next_to_clean = 0; | |
3278 | rx_ring->next_to_use = 0; | |
9d5c8243 AK |
3279 | } |
3280 | ||
3281 | /** | |
3282 | * igb_clean_all_rx_rings - Free Rx Buffers for all queues | |
3283 | * @adapter: board private structure | |
3284 | **/ | |
3285 | static void igb_clean_all_rx_rings(struct igb_adapter *adapter) | |
3286 | { | |
3287 | int i; | |
3288 | ||
3289 | for (i = 0; i < adapter->num_rx_queues; i++) | |
3025a446 | 3290 | igb_clean_rx_ring(adapter->rx_ring[i]); |
9d5c8243 AK |
3291 | } |
3292 | ||
3293 | /** | |
3294 | * igb_set_mac - Change the Ethernet Address of the NIC | |
3295 | * @netdev: network interface device structure | |
3296 | * @p: pointer to an address structure | |
3297 | * | |
3298 | * Returns 0 on success, negative on failure | |
3299 | **/ | |
3300 | static int igb_set_mac(struct net_device *netdev, void *p) | |
3301 | { | |
3302 | struct igb_adapter *adapter = netdev_priv(netdev); | |
28b0759c | 3303 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 AK |
3304 | struct sockaddr *addr = p; |
3305 | ||
3306 | if (!is_valid_ether_addr(addr->sa_data)) | |
3307 | return -EADDRNOTAVAIL; | |
3308 | ||
3309 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
28b0759c | 3310 | memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); |
9d5c8243 | 3311 | |
26ad9178 AD |
3312 | /* set the correct pool for the new PF MAC address in entry 0 */ |
3313 | igb_rar_set_qsel(adapter, hw->mac.addr, 0, | |
3314 | adapter->vfs_allocated_count); | |
e1739522 | 3315 | |
9d5c8243 AK |
3316 | return 0; |
3317 | } | |
3318 | ||
3319 | /** | |
68d480c4 | 3320 | * igb_write_mc_addr_list - write multicast addresses to MTA |
9d5c8243 AK |
3321 | * @netdev: network interface device structure |
3322 | * | |
68d480c4 AD |
3323 | * Writes multicast address list to the MTA hash table. |
3324 | * Returns: -ENOMEM on failure | |
3325 | * 0 on no addresses written | |
3326 | * X on writing X addresses to MTA | |
9d5c8243 | 3327 | **/ |
68d480c4 | 3328 | static int igb_write_mc_addr_list(struct net_device *netdev) |
9d5c8243 AK |
3329 | { |
3330 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3331 | struct e1000_hw *hw = &adapter->hw; | |
22bedad3 | 3332 | struct netdev_hw_addr *ha; |
68d480c4 | 3333 | u8 *mta_list; |
9d5c8243 AK |
3334 | int i; |
3335 | ||
4cd24eaf | 3336 | if (netdev_mc_empty(netdev)) { |
68d480c4 AD |
3337 | /* nothing to program, so clear mc list */ |
3338 | igb_update_mc_addr_list(hw, NULL, 0); | |
3339 | igb_restore_vf_multicasts(adapter); | |
3340 | return 0; | |
3341 | } | |
9d5c8243 | 3342 | |
4cd24eaf | 3343 | mta_list = kzalloc(netdev_mc_count(netdev) * 6, GFP_ATOMIC); |
68d480c4 AD |
3344 | if (!mta_list) |
3345 | return -ENOMEM; | |
ff41f8dc | 3346 | |
68d480c4 | 3347 | /* The shared function expects a packed array of only addresses. */ |
48e2f183 | 3348 | i = 0; |
22bedad3 JP |
3349 | netdev_for_each_mc_addr(ha, netdev) |
3350 | memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN); | |
68d480c4 | 3351 | |
68d480c4 AD |
3352 | igb_update_mc_addr_list(hw, mta_list, i); |
3353 | kfree(mta_list); | |
3354 | ||
4cd24eaf | 3355 | return netdev_mc_count(netdev); |
68d480c4 AD |
3356 | } |
3357 | ||
3358 | /** | |
3359 | * igb_write_uc_addr_list - write unicast addresses to RAR table | |
3360 | * @netdev: network interface device structure | |
3361 | * | |
3362 | * Writes unicast address list to the RAR table. | |
3363 | * Returns: -ENOMEM on failure/insufficient address space | |
3364 | * 0 on no addresses written | |
3365 | * X on writing X addresses to the RAR table | |
3366 | **/ | |
3367 | static int igb_write_uc_addr_list(struct net_device *netdev) | |
3368 | { | |
3369 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3370 | struct e1000_hw *hw = &adapter->hw; | |
3371 | unsigned int vfn = adapter->vfs_allocated_count; | |
3372 | unsigned int rar_entries = hw->mac.rar_entry_count - (vfn + 1); | |
3373 | int count = 0; | |
3374 | ||
3375 | /* return ENOMEM indicating insufficient memory for addresses */ | |
32e7bfc4 | 3376 | if (netdev_uc_count(netdev) > rar_entries) |
68d480c4 | 3377 | return -ENOMEM; |
9d5c8243 | 3378 | |
32e7bfc4 | 3379 | if (!netdev_uc_empty(netdev) && rar_entries) { |
ff41f8dc | 3380 | struct netdev_hw_addr *ha; |
32e7bfc4 JP |
3381 | |
3382 | netdev_for_each_uc_addr(ha, netdev) { | |
ff41f8dc AD |
3383 | if (!rar_entries) |
3384 | break; | |
26ad9178 AD |
3385 | igb_rar_set_qsel(adapter, ha->addr, |
3386 | rar_entries--, | |
68d480c4 AD |
3387 | vfn); |
3388 | count++; | |
ff41f8dc AD |
3389 | } |
3390 | } | |
3391 | /* write the addresses in reverse order to avoid write combining */ | |
3392 | for (; rar_entries > 0 ; rar_entries--) { | |
3393 | wr32(E1000_RAH(rar_entries), 0); | |
3394 | wr32(E1000_RAL(rar_entries), 0); | |
3395 | } | |
3396 | wrfl(); | |
3397 | ||
68d480c4 AD |
3398 | return count; |
3399 | } | |
3400 | ||
3401 | /** | |
3402 | * igb_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set | |
3403 | * @netdev: network interface device structure | |
3404 | * | |
3405 | * The set_rx_mode entry point is called whenever the unicast or multicast | |
3406 | * address lists or the network interface flags are updated. This routine is | |
3407 | * responsible for configuring the hardware for proper unicast, multicast, | |
3408 | * promiscuous mode, and all-multi behavior. | |
3409 | **/ | |
3410 | static void igb_set_rx_mode(struct net_device *netdev) | |
3411 | { | |
3412 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3413 | struct e1000_hw *hw = &adapter->hw; | |
3414 | unsigned int vfn = adapter->vfs_allocated_count; | |
3415 | u32 rctl, vmolr = 0; | |
3416 | int count; | |
3417 | ||
3418 | /* Check for Promiscuous and All Multicast modes */ | |
3419 | rctl = rd32(E1000_RCTL); | |
3420 | ||
3421 | /* clear the effected bits */ | |
3422 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE | E1000_RCTL_VFE); | |
3423 | ||
3424 | if (netdev->flags & IFF_PROMISC) { | |
3425 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); | |
3426 | vmolr |= (E1000_VMOLR_ROPE | E1000_VMOLR_MPME); | |
3427 | } else { | |
3428 | if (netdev->flags & IFF_ALLMULTI) { | |
3429 | rctl |= E1000_RCTL_MPE; | |
3430 | vmolr |= E1000_VMOLR_MPME; | |
3431 | } else { | |
3432 | /* | |
3433 | * Write addresses to the MTA, if the attempt fails | |
25985edc | 3434 | * then we should just turn on promiscuous mode so |
68d480c4 AD |
3435 | * that we can at least receive multicast traffic |
3436 | */ | |
3437 | count = igb_write_mc_addr_list(netdev); | |
3438 | if (count < 0) { | |
3439 | rctl |= E1000_RCTL_MPE; | |
3440 | vmolr |= E1000_VMOLR_MPME; | |
3441 | } else if (count) { | |
3442 | vmolr |= E1000_VMOLR_ROMPE; | |
3443 | } | |
3444 | } | |
3445 | /* | |
3446 | * Write addresses to available RAR registers, if there is not | |
3447 | * sufficient space to store all the addresses then enable | |
25985edc | 3448 | * unicast promiscuous mode |
68d480c4 AD |
3449 | */ |
3450 | count = igb_write_uc_addr_list(netdev); | |
3451 | if (count < 0) { | |
3452 | rctl |= E1000_RCTL_UPE; | |
3453 | vmolr |= E1000_VMOLR_ROPE; | |
3454 | } | |
3455 | rctl |= E1000_RCTL_VFE; | |
28fc06f5 | 3456 | } |
68d480c4 | 3457 | wr32(E1000_RCTL, rctl); |
28fc06f5 | 3458 | |
68d480c4 AD |
3459 | /* |
3460 | * In order to support SR-IOV and eventually VMDq it is necessary to set | |
3461 | * the VMOLR to enable the appropriate modes. Without this workaround | |
3462 | * we will have issues with VLAN tag stripping not being done for frames | |
3463 | * that are only arriving because we are the default pool | |
3464 | */ | |
3465 | if (hw->mac.type < e1000_82576) | |
28fc06f5 | 3466 | return; |
9d5c8243 | 3467 | |
68d480c4 AD |
3468 | vmolr |= rd32(E1000_VMOLR(vfn)) & |
3469 | ~(E1000_VMOLR_ROPE | E1000_VMOLR_MPME | E1000_VMOLR_ROMPE); | |
3470 | wr32(E1000_VMOLR(vfn), vmolr); | |
28fc06f5 | 3471 | igb_restore_vf_multicasts(adapter); |
9d5c8243 AK |
3472 | } |
3473 | ||
13800469 GR |
3474 | static void igb_check_wvbr(struct igb_adapter *adapter) |
3475 | { | |
3476 | struct e1000_hw *hw = &adapter->hw; | |
3477 | u32 wvbr = 0; | |
3478 | ||
3479 | switch (hw->mac.type) { | |
3480 | case e1000_82576: | |
3481 | case e1000_i350: | |
3482 | if (!(wvbr = rd32(E1000_WVBR))) | |
3483 | return; | |
3484 | break; | |
3485 | default: | |
3486 | break; | |
3487 | } | |
3488 | ||
3489 | adapter->wvbr |= wvbr; | |
3490 | } | |
3491 | ||
3492 | #define IGB_STAGGERED_QUEUE_OFFSET 8 | |
3493 | ||
3494 | static void igb_spoof_check(struct igb_adapter *adapter) | |
3495 | { | |
3496 | int j; | |
3497 | ||
3498 | if (!adapter->wvbr) | |
3499 | return; | |
3500 | ||
3501 | for(j = 0; j < adapter->vfs_allocated_count; j++) { | |
3502 | if (adapter->wvbr & (1 << j) || | |
3503 | adapter->wvbr & (1 << (j + IGB_STAGGERED_QUEUE_OFFSET))) { | |
3504 | dev_warn(&adapter->pdev->dev, | |
3505 | "Spoof event(s) detected on VF %d\n", j); | |
3506 | adapter->wvbr &= | |
3507 | ~((1 << j) | | |
3508 | (1 << (j + IGB_STAGGERED_QUEUE_OFFSET))); | |
3509 | } | |
3510 | } | |
3511 | } | |
3512 | ||
9d5c8243 AK |
3513 | /* Need to wait a few seconds after link up to get diagnostic information from |
3514 | * the phy */ | |
3515 | static void igb_update_phy_info(unsigned long data) | |
3516 | { | |
3517 | struct igb_adapter *adapter = (struct igb_adapter *) data; | |
f5f4cf08 | 3518 | igb_get_phy_info(&adapter->hw); |
9d5c8243 AK |
3519 | } |
3520 | ||
4d6b725e AD |
3521 | /** |
3522 | * igb_has_link - check shared code for link and determine up/down | |
3523 | * @adapter: pointer to driver private info | |
3524 | **/ | |
3145535a | 3525 | bool igb_has_link(struct igb_adapter *adapter) |
4d6b725e AD |
3526 | { |
3527 | struct e1000_hw *hw = &adapter->hw; | |
3528 | bool link_active = false; | |
3529 | s32 ret_val = 0; | |
3530 | ||
3531 | /* get_link_status is set on LSC (link status) interrupt or | |
3532 | * rx sequence error interrupt. get_link_status will stay | |
3533 | * false until the e1000_check_for_link establishes link | |
3534 | * for copper adapters ONLY | |
3535 | */ | |
3536 | switch (hw->phy.media_type) { | |
3537 | case e1000_media_type_copper: | |
3538 | if (hw->mac.get_link_status) { | |
3539 | ret_val = hw->mac.ops.check_for_link(hw); | |
3540 | link_active = !hw->mac.get_link_status; | |
3541 | } else { | |
3542 | link_active = true; | |
3543 | } | |
3544 | break; | |
4d6b725e AD |
3545 | case e1000_media_type_internal_serdes: |
3546 | ret_val = hw->mac.ops.check_for_link(hw); | |
3547 | link_active = hw->mac.serdes_has_link; | |
3548 | break; | |
3549 | default: | |
3550 | case e1000_media_type_unknown: | |
3551 | break; | |
3552 | } | |
3553 | ||
3554 | return link_active; | |
3555 | } | |
3556 | ||
563988dc SA |
3557 | static bool igb_thermal_sensor_event(struct e1000_hw *hw, u32 event) |
3558 | { | |
3559 | bool ret = false; | |
3560 | u32 ctrl_ext, thstat; | |
3561 | ||
3562 | /* check for thermal sensor event on i350, copper only */ | |
3563 | if (hw->mac.type == e1000_i350) { | |
3564 | thstat = rd32(E1000_THSTAT); | |
3565 | ctrl_ext = rd32(E1000_CTRL_EXT); | |
3566 | ||
3567 | if ((hw->phy.media_type == e1000_media_type_copper) && | |
3568 | !(ctrl_ext & E1000_CTRL_EXT_LINK_MODE_SGMII)) { | |
3569 | ret = !!(thstat & event); | |
3570 | } | |
3571 | } | |
3572 | ||
3573 | return ret; | |
3574 | } | |
3575 | ||
9d5c8243 AK |
3576 | /** |
3577 | * igb_watchdog - Timer Call-back | |
3578 | * @data: pointer to adapter cast into an unsigned long | |
3579 | **/ | |
3580 | static void igb_watchdog(unsigned long data) | |
3581 | { | |
3582 | struct igb_adapter *adapter = (struct igb_adapter *)data; | |
3583 | /* Do the rest outside of interrupt context */ | |
3584 | schedule_work(&adapter->watchdog_task); | |
3585 | } | |
3586 | ||
3587 | static void igb_watchdog_task(struct work_struct *work) | |
3588 | { | |
3589 | struct igb_adapter *adapter = container_of(work, | |
559e9c49 AD |
3590 | struct igb_adapter, |
3591 | watchdog_task); | |
9d5c8243 | 3592 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 | 3593 | struct net_device *netdev = adapter->netdev; |
563988dc | 3594 | u32 link; |
7a6ea550 | 3595 | int i; |
9d5c8243 | 3596 | |
4d6b725e | 3597 | link = igb_has_link(adapter); |
9d5c8243 AK |
3598 | if (link) { |
3599 | if (!netif_carrier_ok(netdev)) { | |
3600 | u32 ctrl; | |
330a6d6a AD |
3601 | hw->mac.ops.get_speed_and_duplex(hw, |
3602 | &adapter->link_speed, | |
3603 | &adapter->link_duplex); | |
9d5c8243 AK |
3604 | |
3605 | ctrl = rd32(E1000_CTRL); | |
527d47c1 AD |
3606 | /* Links status message must follow this format */ |
3607 | printk(KERN_INFO "igb: %s NIC Link is Up %d Mbps %s, " | |
9d5c8243 | 3608 | "Flow Control: %s\n", |
559e9c49 AD |
3609 | netdev->name, |
3610 | adapter->link_speed, | |
3611 | adapter->link_duplex == FULL_DUPLEX ? | |
9d5c8243 | 3612 | "Full Duplex" : "Half Duplex", |
559e9c49 AD |
3613 | ((ctrl & E1000_CTRL_TFCE) && |
3614 | (ctrl & E1000_CTRL_RFCE)) ? "RX/TX" : | |
3615 | ((ctrl & E1000_CTRL_RFCE) ? "RX" : | |
3616 | ((ctrl & E1000_CTRL_TFCE) ? "TX" : "None"))); | |
9d5c8243 | 3617 | |
563988dc SA |
3618 | /* check for thermal sensor event */ |
3619 | if (igb_thermal_sensor_event(hw, E1000_THSTAT_LINK_THROTTLE)) { | |
3620 | printk(KERN_INFO "igb: %s The network adapter " | |
3621 | "link speed was downshifted " | |
3622 | "because it overheated.\n", | |
3623 | netdev->name); | |
7ef5ed1c | 3624 | } |
563988dc | 3625 | |
d07f3e37 | 3626 | /* adjust timeout factor according to speed/duplex */ |
9d5c8243 AK |
3627 | adapter->tx_timeout_factor = 1; |
3628 | switch (adapter->link_speed) { | |
3629 | case SPEED_10: | |
9d5c8243 AK |
3630 | adapter->tx_timeout_factor = 14; |
3631 | break; | |
3632 | case SPEED_100: | |
9d5c8243 AK |
3633 | /* maybe add some timeout factor ? */ |
3634 | break; | |
3635 | } | |
3636 | ||
3637 | netif_carrier_on(netdev); | |
9d5c8243 | 3638 | |
4ae196df | 3639 | igb_ping_all_vfs(adapter); |
17dc566c | 3640 | igb_check_vf_rate_limit(adapter); |
4ae196df | 3641 | |
4b1a9877 | 3642 | /* link state has changed, schedule phy info update */ |
9d5c8243 AK |
3643 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
3644 | mod_timer(&adapter->phy_info_timer, | |
3645 | round_jiffies(jiffies + 2 * HZ)); | |
3646 | } | |
3647 | } else { | |
3648 | if (netif_carrier_ok(netdev)) { | |
3649 | adapter->link_speed = 0; | |
3650 | adapter->link_duplex = 0; | |
563988dc SA |
3651 | |
3652 | /* check for thermal sensor event */ | |
3653 | if (igb_thermal_sensor_event(hw, E1000_THSTAT_PWR_DOWN)) { | |
3654 | printk(KERN_ERR "igb: %s The network adapter " | |
3655 | "was stopped because it " | |
3656 | "overheated.\n", | |
7ef5ed1c | 3657 | netdev->name); |
7ef5ed1c | 3658 | } |
563988dc | 3659 | |
527d47c1 AD |
3660 | /* Links status message must follow this format */ |
3661 | printk(KERN_INFO "igb: %s NIC Link is Down\n", | |
3662 | netdev->name); | |
9d5c8243 | 3663 | netif_carrier_off(netdev); |
4b1a9877 | 3664 | |
4ae196df AD |
3665 | igb_ping_all_vfs(adapter); |
3666 | ||
4b1a9877 | 3667 | /* link state has changed, schedule phy info update */ |
9d5c8243 AK |
3668 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
3669 | mod_timer(&adapter->phy_info_timer, | |
3670 | round_jiffies(jiffies + 2 * HZ)); | |
3671 | } | |
3672 | } | |
3673 | ||
12dcd86b ED |
3674 | spin_lock(&adapter->stats64_lock); |
3675 | igb_update_stats(adapter, &adapter->stats64); | |
3676 | spin_unlock(&adapter->stats64_lock); | |
9d5c8243 | 3677 | |
dbabb065 | 3678 | for (i = 0; i < adapter->num_tx_queues; i++) { |
3025a446 | 3679 | struct igb_ring *tx_ring = adapter->tx_ring[i]; |
dbabb065 | 3680 | if (!netif_carrier_ok(netdev)) { |
9d5c8243 AK |
3681 | /* We've lost link, so the controller stops DMA, |
3682 | * but we've got queued Tx work that's never going | |
3683 | * to get done, so reset controller to flush Tx. | |
3684 | * (Do the reset outside of interrupt context). */ | |
dbabb065 AD |
3685 | if (igb_desc_unused(tx_ring) + 1 < tx_ring->count) { |
3686 | adapter->tx_timeout_count++; | |
3687 | schedule_work(&adapter->reset_task); | |
3688 | /* return immediately since reset is imminent */ | |
3689 | return; | |
3690 | } | |
9d5c8243 | 3691 | } |
9d5c8243 | 3692 | |
dbabb065 AD |
3693 | /* Force detection of hung controller every watchdog period */ |
3694 | tx_ring->detect_tx_hung = true; | |
3695 | } | |
f7ba205e | 3696 | |
9d5c8243 | 3697 | /* Cause software interrupt to ensure rx ring is cleaned */ |
7a6ea550 | 3698 | if (adapter->msix_entries) { |
047e0030 AD |
3699 | u32 eics = 0; |
3700 | for (i = 0; i < adapter->num_q_vectors; i++) { | |
3701 | struct igb_q_vector *q_vector = adapter->q_vector[i]; | |
3702 | eics |= q_vector->eims_value; | |
3703 | } | |
7a6ea550 AD |
3704 | wr32(E1000_EICS, eics); |
3705 | } else { | |
3706 | wr32(E1000_ICS, E1000_ICS_RXDMT0); | |
3707 | } | |
9d5c8243 | 3708 | |
13800469 GR |
3709 | igb_spoof_check(adapter); |
3710 | ||
9d5c8243 AK |
3711 | /* Reset the timer */ |
3712 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
3713 | mod_timer(&adapter->watchdog_timer, | |
3714 | round_jiffies(jiffies + 2 * HZ)); | |
3715 | } | |
3716 | ||
3717 | enum latency_range { | |
3718 | lowest_latency = 0, | |
3719 | low_latency = 1, | |
3720 | bulk_latency = 2, | |
3721 | latency_invalid = 255 | |
3722 | }; | |
3723 | ||
6eb5a7f1 AD |
3724 | /** |
3725 | * igb_update_ring_itr - update the dynamic ITR value based on packet size | |
3726 | * | |
3727 | * Stores a new ITR value based on strictly on packet size. This | |
3728 | * algorithm is less sophisticated than that used in igb_update_itr, | |
3729 | * due to the difficulty of synchronizing statistics across multiple | |
eef35c2d | 3730 | * receive rings. The divisors and thresholds used by this function |
6eb5a7f1 AD |
3731 | * were determined based on theoretical maximum wire speed and testing |
3732 | * data, in order to minimize response time while increasing bulk | |
3733 | * throughput. | |
3734 | * This functionality is controlled by the InterruptThrottleRate module | |
3735 | * parameter (see igb_param.c) | |
3736 | * NOTE: This function is called only when operating in a multiqueue | |
3737 | * receive environment. | |
047e0030 | 3738 | * @q_vector: pointer to q_vector |
6eb5a7f1 | 3739 | **/ |
047e0030 | 3740 | static void igb_update_ring_itr(struct igb_q_vector *q_vector) |
9d5c8243 | 3741 | { |
047e0030 | 3742 | int new_val = q_vector->itr_val; |
6eb5a7f1 | 3743 | int avg_wire_size = 0; |
047e0030 | 3744 | struct igb_adapter *adapter = q_vector->adapter; |
12dcd86b ED |
3745 | struct igb_ring *ring; |
3746 | unsigned int packets; | |
9d5c8243 | 3747 | |
6eb5a7f1 AD |
3748 | /* For non-gigabit speeds, just fix the interrupt rate at 4000 |
3749 | * ints/sec - ITR timer value of 120 ticks. | |
3750 | */ | |
3751 | if (adapter->link_speed != SPEED_1000) { | |
047e0030 | 3752 | new_val = 976; |
6eb5a7f1 | 3753 | goto set_itr_val; |
9d5c8243 | 3754 | } |
047e0030 | 3755 | |
12dcd86b ED |
3756 | ring = q_vector->rx_ring; |
3757 | if (ring) { | |
3758 | packets = ACCESS_ONCE(ring->total_packets); | |
3759 | ||
3760 | if (packets) | |
3761 | avg_wire_size = ring->total_bytes / packets; | |
047e0030 AD |
3762 | } |
3763 | ||
12dcd86b ED |
3764 | ring = q_vector->tx_ring; |
3765 | if (ring) { | |
3766 | packets = ACCESS_ONCE(ring->total_packets); | |
3767 | ||
3768 | if (packets) | |
3769 | avg_wire_size = max_t(u32, avg_wire_size, | |
3770 | ring->total_bytes / packets); | |
047e0030 AD |
3771 | } |
3772 | ||
3773 | /* if avg_wire_size isn't set no work was done */ | |
3774 | if (!avg_wire_size) | |
3775 | goto clear_counts; | |
9d5c8243 | 3776 | |
6eb5a7f1 AD |
3777 | /* Add 24 bytes to size to account for CRC, preamble, and gap */ |
3778 | avg_wire_size += 24; | |
3779 | ||
3780 | /* Don't starve jumbo frames */ | |
3781 | avg_wire_size = min(avg_wire_size, 3000); | |
9d5c8243 | 3782 | |
6eb5a7f1 AD |
3783 | /* Give a little boost to mid-size frames */ |
3784 | if ((avg_wire_size > 300) && (avg_wire_size < 1200)) | |
3785 | new_val = avg_wire_size / 3; | |
3786 | else | |
3787 | new_val = avg_wire_size / 2; | |
9d5c8243 | 3788 | |
abe1c363 NN |
3789 | /* when in itr mode 3 do not exceed 20K ints/sec */ |
3790 | if (adapter->rx_itr_setting == 3 && new_val < 196) | |
3791 | new_val = 196; | |
3792 | ||
6eb5a7f1 | 3793 | set_itr_val: |
047e0030 AD |
3794 | if (new_val != q_vector->itr_val) { |
3795 | q_vector->itr_val = new_val; | |
3796 | q_vector->set_itr = 1; | |
9d5c8243 | 3797 | } |
6eb5a7f1 | 3798 | clear_counts: |
047e0030 AD |
3799 | if (q_vector->rx_ring) { |
3800 | q_vector->rx_ring->total_bytes = 0; | |
3801 | q_vector->rx_ring->total_packets = 0; | |
3802 | } | |
3803 | if (q_vector->tx_ring) { | |
3804 | q_vector->tx_ring->total_bytes = 0; | |
3805 | q_vector->tx_ring->total_packets = 0; | |
3806 | } | |
9d5c8243 AK |
3807 | } |
3808 | ||
3809 | /** | |
3810 | * igb_update_itr - update the dynamic ITR value based on statistics | |
3811 | * Stores a new ITR value based on packets and byte | |
3812 | * counts during the last interrupt. The advantage of per interrupt | |
3813 | * computation is faster updates and more accurate ITR for the current | |
3814 | * traffic pattern. Constants in this function were computed | |
3815 | * based on theoretical maximum wire speed and thresholds were set based | |
3816 | * on testing data as well as attempting to minimize response time | |
3817 | * while increasing bulk throughput. | |
3818 | * this functionality is controlled by the InterruptThrottleRate module | |
3819 | * parameter (see igb_param.c) | |
3820 | * NOTE: These calculations are only valid when operating in a single- | |
3821 | * queue environment. | |
3822 | * @adapter: pointer to adapter | |
047e0030 | 3823 | * @itr_setting: current q_vector->itr_val |
9d5c8243 AK |
3824 | * @packets: the number of packets during this measurement interval |
3825 | * @bytes: the number of bytes during this measurement interval | |
3826 | **/ | |
3827 | static unsigned int igb_update_itr(struct igb_adapter *adapter, u16 itr_setting, | |
3828 | int packets, int bytes) | |
3829 | { | |
3830 | unsigned int retval = itr_setting; | |
3831 | ||
3832 | if (packets == 0) | |
3833 | goto update_itr_done; | |
3834 | ||
3835 | switch (itr_setting) { | |
3836 | case lowest_latency: | |
3837 | /* handle TSO and jumbo frames */ | |
3838 | if (bytes/packets > 8000) | |
3839 | retval = bulk_latency; | |
3840 | else if ((packets < 5) && (bytes > 512)) | |
3841 | retval = low_latency; | |
3842 | break; | |
3843 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
3844 | if (bytes > 10000) { | |
3845 | /* this if handles the TSO accounting */ | |
3846 | if (bytes/packets > 8000) { | |
3847 | retval = bulk_latency; | |
3848 | } else if ((packets < 10) || ((bytes/packets) > 1200)) { | |
3849 | retval = bulk_latency; | |
3850 | } else if ((packets > 35)) { | |
3851 | retval = lowest_latency; | |
3852 | } | |
3853 | } else if (bytes/packets > 2000) { | |
3854 | retval = bulk_latency; | |
3855 | } else if (packets <= 2 && bytes < 512) { | |
3856 | retval = lowest_latency; | |
3857 | } | |
3858 | break; | |
3859 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
3860 | if (bytes > 25000) { | |
3861 | if (packets > 35) | |
3862 | retval = low_latency; | |
1e5c3d21 | 3863 | } else if (bytes < 1500) { |
9d5c8243 AK |
3864 | retval = low_latency; |
3865 | } | |
3866 | break; | |
3867 | } | |
3868 | ||
3869 | update_itr_done: | |
3870 | return retval; | |
3871 | } | |
3872 | ||
6eb5a7f1 | 3873 | static void igb_set_itr(struct igb_adapter *adapter) |
9d5c8243 | 3874 | { |
047e0030 | 3875 | struct igb_q_vector *q_vector = adapter->q_vector[0]; |
9d5c8243 | 3876 | u16 current_itr; |
047e0030 | 3877 | u32 new_itr = q_vector->itr_val; |
9d5c8243 AK |
3878 | |
3879 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ | |
3880 | if (adapter->link_speed != SPEED_1000) { | |
3881 | current_itr = 0; | |
3882 | new_itr = 4000; | |
3883 | goto set_itr_now; | |
3884 | } | |
3885 | ||
3886 | adapter->rx_itr = igb_update_itr(adapter, | |
3887 | adapter->rx_itr, | |
3025a446 AD |
3888 | q_vector->rx_ring->total_packets, |
3889 | q_vector->rx_ring->total_bytes); | |
9d5c8243 | 3890 | |
047e0030 AD |
3891 | adapter->tx_itr = igb_update_itr(adapter, |
3892 | adapter->tx_itr, | |
3025a446 AD |
3893 | q_vector->tx_ring->total_packets, |
3894 | q_vector->tx_ring->total_bytes); | |
047e0030 | 3895 | current_itr = max(adapter->rx_itr, adapter->tx_itr); |
9d5c8243 | 3896 | |
6eb5a7f1 | 3897 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
4fc82adf | 3898 | if (adapter->rx_itr_setting == 3 && current_itr == lowest_latency) |
6eb5a7f1 AD |
3899 | current_itr = low_latency; |
3900 | ||
9d5c8243 AK |
3901 | switch (current_itr) { |
3902 | /* counts and packets in update_itr are dependent on these numbers */ | |
3903 | case lowest_latency: | |
78b1f607 | 3904 | new_itr = 56; /* aka 70,000 ints/sec */ |
9d5c8243 AK |
3905 | break; |
3906 | case low_latency: | |
78b1f607 | 3907 | new_itr = 196; /* aka 20,000 ints/sec */ |
9d5c8243 AK |
3908 | break; |
3909 | case bulk_latency: | |
78b1f607 | 3910 | new_itr = 980; /* aka 4,000 ints/sec */ |
9d5c8243 AK |
3911 | break; |
3912 | default: | |
3913 | break; | |
3914 | } | |
3915 | ||
3916 | set_itr_now: | |
3025a446 AD |
3917 | q_vector->rx_ring->total_bytes = 0; |
3918 | q_vector->rx_ring->total_packets = 0; | |
3919 | q_vector->tx_ring->total_bytes = 0; | |
3920 | q_vector->tx_ring->total_packets = 0; | |
6eb5a7f1 | 3921 | |
047e0030 | 3922 | if (new_itr != q_vector->itr_val) { |
9d5c8243 AK |
3923 | /* this attempts to bias the interrupt rate towards Bulk |
3924 | * by adding intermediate steps when interrupt rate is | |
3925 | * increasing */ | |
047e0030 AD |
3926 | new_itr = new_itr > q_vector->itr_val ? |
3927 | max((new_itr * q_vector->itr_val) / | |
3928 | (new_itr + (q_vector->itr_val >> 2)), | |
3929 | new_itr) : | |
9d5c8243 AK |
3930 | new_itr; |
3931 | /* Don't write the value here; it resets the adapter's | |
3932 | * internal timer, and causes us to delay far longer than | |
3933 | * we should between interrupts. Instead, we write the ITR | |
3934 | * value at the beginning of the next interrupt so the timing | |
3935 | * ends up being correct. | |
3936 | */ | |
047e0030 AD |
3937 | q_vector->itr_val = new_itr; |
3938 | q_vector->set_itr = 1; | |
9d5c8243 | 3939 | } |
9d5c8243 AK |
3940 | } |
3941 | ||
9d5c8243 AK |
3942 | #define IGB_TX_FLAGS_CSUM 0x00000001 |
3943 | #define IGB_TX_FLAGS_VLAN 0x00000002 | |
3944 | #define IGB_TX_FLAGS_TSO 0x00000004 | |
3945 | #define IGB_TX_FLAGS_IPV4 0x00000008 | |
cdfd01fc AD |
3946 | #define IGB_TX_FLAGS_TSTAMP 0x00000010 |
3947 | #define IGB_TX_FLAGS_VLAN_MASK 0xffff0000 | |
3948 | #define IGB_TX_FLAGS_VLAN_SHIFT 16 | |
9d5c8243 | 3949 | |
85ad76b2 | 3950 | static inline int igb_tso_adv(struct igb_ring *tx_ring, |
9d5c8243 AK |
3951 | struct sk_buff *skb, u32 tx_flags, u8 *hdr_len) |
3952 | { | |
3953 | struct e1000_adv_tx_context_desc *context_desc; | |
3954 | unsigned int i; | |
3955 | int err; | |
3956 | struct igb_buffer *buffer_info; | |
3957 | u32 info = 0, tu_cmd = 0; | |
91d4ee33 NN |
3958 | u32 mss_l4len_idx; |
3959 | u8 l4len; | |
9d5c8243 AK |
3960 | |
3961 | if (skb_header_cloned(skb)) { | |
3962 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
3963 | if (err) | |
3964 | return err; | |
3965 | } | |
3966 | ||
3967 | l4len = tcp_hdrlen(skb); | |
3968 | *hdr_len += l4len; | |
3969 | ||
3970 | if (skb->protocol == htons(ETH_P_IP)) { | |
3971 | struct iphdr *iph = ip_hdr(skb); | |
3972 | iph->tot_len = 0; | |
3973 | iph->check = 0; | |
3974 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, | |
3975 | iph->daddr, 0, | |
3976 | IPPROTO_TCP, | |
3977 | 0); | |
8e1e8a47 | 3978 | } else if (skb_is_gso_v6(skb)) { |
9d5c8243 AK |
3979 | ipv6_hdr(skb)->payload_len = 0; |
3980 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
3981 | &ipv6_hdr(skb)->daddr, | |
3982 | 0, IPPROTO_TCP, 0); | |
3983 | } | |
3984 | ||
3985 | i = tx_ring->next_to_use; | |
3986 | ||
3987 | buffer_info = &tx_ring->buffer_info[i]; | |
3988 | context_desc = E1000_TX_CTXTDESC_ADV(*tx_ring, i); | |
3989 | /* VLAN MACLEN IPLEN */ | |
3990 | if (tx_flags & IGB_TX_FLAGS_VLAN) | |
3991 | info |= (tx_flags & IGB_TX_FLAGS_VLAN_MASK); | |
3992 | info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); | |
3993 | *hdr_len += skb_network_offset(skb); | |
3994 | info |= skb_network_header_len(skb); | |
3995 | *hdr_len += skb_network_header_len(skb); | |
3996 | context_desc->vlan_macip_lens = cpu_to_le32(info); | |
3997 | ||
3998 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ | |
3999 | tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); | |
4000 | ||
4001 | if (skb->protocol == htons(ETH_P_IP)) | |
4002 | tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; | |
4003 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
4004 | ||
4005 | context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); | |
4006 | ||
4007 | /* MSS L4LEN IDX */ | |
4008 | mss_l4len_idx = (skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT); | |
4009 | mss_l4len_idx |= (l4len << E1000_ADVTXD_L4LEN_SHIFT); | |
4010 | ||
73cd78f1 | 4011 | /* For 82575, context index must be unique per ring. */ |
85ad76b2 AD |
4012 | if (tx_ring->flags & IGB_RING_FLAG_TX_CTX_IDX) |
4013 | mss_l4len_idx |= tx_ring->reg_idx << 4; | |
9d5c8243 AK |
4014 | |
4015 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); | |
4016 | context_desc->seqnum_seed = 0; | |
4017 | ||
4018 | buffer_info->time_stamp = jiffies; | |
0e014cb1 | 4019 | buffer_info->next_to_watch = i; |
9d5c8243 AK |
4020 | buffer_info->dma = 0; |
4021 | i++; | |
4022 | if (i == tx_ring->count) | |
4023 | i = 0; | |
4024 | ||
4025 | tx_ring->next_to_use = i; | |
4026 | ||
4027 | return true; | |
4028 | } | |
4029 | ||
85ad76b2 AD |
4030 | static inline bool igb_tx_csum_adv(struct igb_ring *tx_ring, |
4031 | struct sk_buff *skb, u32 tx_flags) | |
9d5c8243 AK |
4032 | { |
4033 | struct e1000_adv_tx_context_desc *context_desc; | |
59d71989 | 4034 | struct device *dev = tx_ring->dev; |
9d5c8243 AK |
4035 | struct igb_buffer *buffer_info; |
4036 | u32 info = 0, tu_cmd = 0; | |
80785298 | 4037 | unsigned int i; |
9d5c8243 AK |
4038 | |
4039 | if ((skb->ip_summed == CHECKSUM_PARTIAL) || | |
4040 | (tx_flags & IGB_TX_FLAGS_VLAN)) { | |
4041 | i = tx_ring->next_to_use; | |
4042 | buffer_info = &tx_ring->buffer_info[i]; | |
4043 | context_desc = E1000_TX_CTXTDESC_ADV(*tx_ring, i); | |
4044 | ||
4045 | if (tx_flags & IGB_TX_FLAGS_VLAN) | |
4046 | info |= (tx_flags & IGB_TX_FLAGS_VLAN_MASK); | |
cdfd01fc | 4047 | |
9d5c8243 AK |
4048 | info |= (skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT); |
4049 | if (skb->ip_summed == CHECKSUM_PARTIAL) | |
4050 | info |= skb_network_header_len(skb); | |
4051 | ||
4052 | context_desc->vlan_macip_lens = cpu_to_le32(info); | |
4053 | ||
4054 | tu_cmd |= (E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT); | |
4055 | ||
4056 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
fa4a7ef3 AJ |
4057 | __be16 protocol; |
4058 | ||
4059 | if (skb->protocol == cpu_to_be16(ETH_P_8021Q)) { | |
4060 | const struct vlan_ethhdr *vhdr = | |
4061 | (const struct vlan_ethhdr*)skb->data; | |
4062 | ||
4063 | protocol = vhdr->h_vlan_encapsulated_proto; | |
4064 | } else { | |
4065 | protocol = skb->protocol; | |
4066 | } | |
4067 | ||
4068 | switch (protocol) { | |
09640e63 | 4069 | case cpu_to_be16(ETH_P_IP): |
9d5c8243 | 4070 | tu_cmd |= E1000_ADVTXD_TUCMD_IPV4; |
44b0cda3 MW |
4071 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
4072 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
b9473560 JB |
4073 | else if (ip_hdr(skb)->protocol == IPPROTO_SCTP) |
4074 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_SCTP; | |
44b0cda3 | 4075 | break; |
09640e63 | 4076 | case cpu_to_be16(ETH_P_IPV6): |
44b0cda3 MW |
4077 | /* XXX what about other V6 headers?? */ |
4078 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
4079 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
b9473560 JB |
4080 | else if (ipv6_hdr(skb)->nexthdr == IPPROTO_SCTP) |
4081 | tu_cmd |= E1000_ADVTXD_TUCMD_L4T_SCTP; | |
44b0cda3 MW |
4082 | break; |
4083 | default: | |
4084 | if (unlikely(net_ratelimit())) | |
59d71989 | 4085 | dev_warn(dev, |
44b0cda3 MW |
4086 | "partial checksum but proto=%x!\n", |
4087 | skb->protocol); | |
4088 | break; | |
4089 | } | |
9d5c8243 AK |
4090 | } |
4091 | ||
4092 | context_desc->type_tucmd_mlhl = cpu_to_le32(tu_cmd); | |
4093 | context_desc->seqnum_seed = 0; | |
85ad76b2 | 4094 | if (tx_ring->flags & IGB_RING_FLAG_TX_CTX_IDX) |
7dfc16fa | 4095 | context_desc->mss_l4len_idx = |
85ad76b2 | 4096 | cpu_to_le32(tx_ring->reg_idx << 4); |
9d5c8243 AK |
4097 | |
4098 | buffer_info->time_stamp = jiffies; | |
0e014cb1 | 4099 | buffer_info->next_to_watch = i; |
9d5c8243 AK |
4100 | buffer_info->dma = 0; |
4101 | ||
4102 | i++; | |
4103 | if (i == tx_ring->count) | |
4104 | i = 0; | |
4105 | tx_ring->next_to_use = i; | |
4106 | ||
4107 | return true; | |
4108 | } | |
9d5c8243 AK |
4109 | return false; |
4110 | } | |
4111 | ||
4112 | #define IGB_MAX_TXD_PWR 16 | |
4113 | #define IGB_MAX_DATA_PER_TXD (1<<IGB_MAX_TXD_PWR) | |
4114 | ||
80785298 | 4115 | static inline int igb_tx_map_adv(struct igb_ring *tx_ring, struct sk_buff *skb, |
0e014cb1 | 4116 | unsigned int first) |
9d5c8243 AK |
4117 | { |
4118 | struct igb_buffer *buffer_info; | |
59d71989 | 4119 | struct device *dev = tx_ring->dev; |
2873957d | 4120 | unsigned int hlen = skb_headlen(skb); |
9d5c8243 AK |
4121 | unsigned int count = 0, i; |
4122 | unsigned int f; | |
2873957d | 4123 | u16 gso_segs = skb_shinfo(skb)->gso_segs ?: 1; |
9d5c8243 AK |
4124 | |
4125 | i = tx_ring->next_to_use; | |
4126 | ||
4127 | buffer_info = &tx_ring->buffer_info[i]; | |
2873957d NN |
4128 | BUG_ON(hlen >= IGB_MAX_DATA_PER_TXD); |
4129 | buffer_info->length = hlen; | |
9d5c8243 AK |
4130 | /* set time_stamp *before* dma to help avoid a possible race */ |
4131 | buffer_info->time_stamp = jiffies; | |
0e014cb1 | 4132 | buffer_info->next_to_watch = i; |
2873957d | 4133 | buffer_info->dma = dma_map_single(dev, skb->data, hlen, |
59d71989 AD |
4134 | DMA_TO_DEVICE); |
4135 | if (dma_mapping_error(dev, buffer_info->dma)) | |
6366ad33 | 4136 | goto dma_error; |
9d5c8243 AK |
4137 | |
4138 | for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) { | |
2873957d NN |
4139 | struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[f]; |
4140 | unsigned int len = frag->size; | |
9d5c8243 | 4141 | |
8581145f | 4142 | count++; |
65689fef AD |
4143 | i++; |
4144 | if (i == tx_ring->count) | |
4145 | i = 0; | |
4146 | ||
9d5c8243 AK |
4147 | buffer_info = &tx_ring->buffer_info[i]; |
4148 | BUG_ON(len >= IGB_MAX_DATA_PER_TXD); | |
4149 | buffer_info->length = len; | |
4150 | buffer_info->time_stamp = jiffies; | |
0e014cb1 | 4151 | buffer_info->next_to_watch = i; |
6366ad33 | 4152 | buffer_info->mapped_as_page = true; |
59d71989 | 4153 | buffer_info->dma = dma_map_page(dev, |
6366ad33 AD |
4154 | frag->page, |
4155 | frag->page_offset, | |
4156 | len, | |
59d71989 AD |
4157 | DMA_TO_DEVICE); |
4158 | if (dma_mapping_error(dev, buffer_info->dma)) | |
6366ad33 AD |
4159 | goto dma_error; |
4160 | ||
9d5c8243 AK |
4161 | } |
4162 | ||
9d5c8243 | 4163 | tx_ring->buffer_info[i].skb = skb; |
2244d07b | 4164 | tx_ring->buffer_info[i].tx_flags = skb_shinfo(skb)->tx_flags; |
2873957d NN |
4165 | /* multiply data chunks by size of headers */ |
4166 | tx_ring->buffer_info[i].bytecount = ((gso_segs - 1) * hlen) + skb->len; | |
4167 | tx_ring->buffer_info[i].gso_segs = gso_segs; | |
0e014cb1 | 4168 | tx_ring->buffer_info[first].next_to_watch = i; |
9d5c8243 | 4169 | |
cdfd01fc | 4170 | return ++count; |
6366ad33 AD |
4171 | |
4172 | dma_error: | |
59d71989 | 4173 | dev_err(dev, "TX DMA map failed\n"); |
6366ad33 AD |
4174 | |
4175 | /* clear timestamp and dma mappings for failed buffer_info mapping */ | |
4176 | buffer_info->dma = 0; | |
4177 | buffer_info->time_stamp = 0; | |
4178 | buffer_info->length = 0; | |
4179 | buffer_info->next_to_watch = 0; | |
4180 | buffer_info->mapped_as_page = false; | |
6366ad33 AD |
4181 | |
4182 | /* clear timestamp and dma mappings for remaining portion of packet */ | |
a77ff709 NN |
4183 | while (count--) { |
4184 | if (i == 0) | |
4185 | i = tx_ring->count; | |
6366ad33 | 4186 | i--; |
6366ad33 AD |
4187 | buffer_info = &tx_ring->buffer_info[i]; |
4188 | igb_unmap_and_free_tx_resource(tx_ring, buffer_info); | |
4189 | } | |
4190 | ||
4191 | return 0; | |
9d5c8243 AK |
4192 | } |
4193 | ||
85ad76b2 | 4194 | static inline void igb_tx_queue_adv(struct igb_ring *tx_ring, |
91d4ee33 | 4195 | u32 tx_flags, int count, u32 paylen, |
9d5c8243 AK |
4196 | u8 hdr_len) |
4197 | { | |
cdfd01fc | 4198 | union e1000_adv_tx_desc *tx_desc; |
9d5c8243 AK |
4199 | struct igb_buffer *buffer_info; |
4200 | u32 olinfo_status = 0, cmd_type_len; | |
cdfd01fc | 4201 | unsigned int i = tx_ring->next_to_use; |
9d5c8243 AK |
4202 | |
4203 | cmd_type_len = (E1000_ADVTXD_DTYP_DATA | E1000_ADVTXD_DCMD_IFCS | | |
4204 | E1000_ADVTXD_DCMD_DEXT); | |
4205 | ||
4206 | if (tx_flags & IGB_TX_FLAGS_VLAN) | |
4207 | cmd_type_len |= E1000_ADVTXD_DCMD_VLE; | |
4208 | ||
33af6bcc PO |
4209 | if (tx_flags & IGB_TX_FLAGS_TSTAMP) |
4210 | cmd_type_len |= E1000_ADVTXD_MAC_TSTAMP; | |
4211 | ||
9d5c8243 AK |
4212 | if (tx_flags & IGB_TX_FLAGS_TSO) { |
4213 | cmd_type_len |= E1000_ADVTXD_DCMD_TSE; | |
4214 | ||
4215 | /* insert tcp checksum */ | |
4216 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; | |
4217 | ||
4218 | /* insert ip checksum */ | |
4219 | if (tx_flags & IGB_TX_FLAGS_IPV4) | |
4220 | olinfo_status |= E1000_TXD_POPTS_IXSM << 8; | |
4221 | ||
4222 | } else if (tx_flags & IGB_TX_FLAGS_CSUM) { | |
4223 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; | |
4224 | } | |
4225 | ||
85ad76b2 AD |
4226 | if ((tx_ring->flags & IGB_RING_FLAG_TX_CTX_IDX) && |
4227 | (tx_flags & (IGB_TX_FLAGS_CSUM | | |
4228 | IGB_TX_FLAGS_TSO | | |
7dfc16fa | 4229 | IGB_TX_FLAGS_VLAN))) |
85ad76b2 | 4230 | olinfo_status |= tx_ring->reg_idx << 4; |
9d5c8243 AK |
4231 | |
4232 | olinfo_status |= ((paylen - hdr_len) << E1000_ADVTXD_PAYLEN_SHIFT); | |
4233 | ||
cdfd01fc | 4234 | do { |
9d5c8243 AK |
4235 | buffer_info = &tx_ring->buffer_info[i]; |
4236 | tx_desc = E1000_TX_DESC_ADV(*tx_ring, i); | |
4237 | tx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); | |
4238 | tx_desc->read.cmd_type_len = | |
4239 | cpu_to_le32(cmd_type_len | buffer_info->length); | |
4240 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); | |
cdfd01fc | 4241 | count--; |
9d5c8243 AK |
4242 | i++; |
4243 | if (i == tx_ring->count) | |
4244 | i = 0; | |
cdfd01fc | 4245 | } while (count > 0); |
9d5c8243 | 4246 | |
85ad76b2 | 4247 | tx_desc->read.cmd_type_len |= cpu_to_le32(IGB_ADVTXD_DCMD); |
9d5c8243 AK |
4248 | /* Force memory writes to complete before letting h/w |
4249 | * know there are new descriptors to fetch. (Only | |
4250 | * applicable for weak-ordered memory model archs, | |
4251 | * such as IA-64). */ | |
4252 | wmb(); | |
4253 | ||
4254 | tx_ring->next_to_use = i; | |
fce99e34 | 4255 | writel(i, tx_ring->tail); |
9d5c8243 AK |
4256 | /* we need this if more than one processor can write to our tail |
4257 | * at a time, it syncronizes IO on IA64/Altix systems */ | |
4258 | mmiowb(); | |
4259 | } | |
4260 | ||
e694e964 | 4261 | static int __igb_maybe_stop_tx(struct igb_ring *tx_ring, int size) |
9d5c8243 | 4262 | { |
e694e964 AD |
4263 | struct net_device *netdev = tx_ring->netdev; |
4264 | ||
661086df | 4265 | netif_stop_subqueue(netdev, tx_ring->queue_index); |
661086df | 4266 | |
9d5c8243 AK |
4267 | /* Herbert's original patch had: |
4268 | * smp_mb__after_netif_stop_queue(); | |
4269 | * but since that doesn't exist yet, just open code it. */ | |
4270 | smp_mb(); | |
4271 | ||
4272 | /* We need to check again in a case another CPU has just | |
4273 | * made room available. */ | |
c493ea45 | 4274 | if (igb_desc_unused(tx_ring) < size) |
9d5c8243 AK |
4275 | return -EBUSY; |
4276 | ||
4277 | /* A reprieve! */ | |
661086df | 4278 | netif_wake_subqueue(netdev, tx_ring->queue_index); |
12dcd86b ED |
4279 | |
4280 | u64_stats_update_begin(&tx_ring->tx_syncp2); | |
4281 | tx_ring->tx_stats.restart_queue2++; | |
4282 | u64_stats_update_end(&tx_ring->tx_syncp2); | |
4283 | ||
9d5c8243 AK |
4284 | return 0; |
4285 | } | |
4286 | ||
717ba089 | 4287 | static inline int igb_maybe_stop_tx(struct igb_ring *tx_ring, int size) |
9d5c8243 | 4288 | { |
c493ea45 | 4289 | if (igb_desc_unused(tx_ring) >= size) |
9d5c8243 | 4290 | return 0; |
e694e964 | 4291 | return __igb_maybe_stop_tx(tx_ring, size); |
9d5c8243 AK |
4292 | } |
4293 | ||
b1a436c3 AD |
4294 | netdev_tx_t igb_xmit_frame_ring_adv(struct sk_buff *skb, |
4295 | struct igb_ring *tx_ring) | |
9d5c8243 | 4296 | { |
cdfd01fc | 4297 | int tso = 0, count; |
91d4ee33 NN |
4298 | u32 tx_flags = 0; |
4299 | u16 first; | |
4300 | u8 hdr_len = 0; | |
9d5c8243 | 4301 | |
9d5c8243 AK |
4302 | /* need: 1 descriptor per page, |
4303 | * + 2 desc gap to keep tail from touching head, | |
4304 | * + 1 desc for skb->data, | |
4305 | * + 1 desc for context descriptor, | |
4306 | * otherwise try next time */ | |
e694e964 | 4307 | if (igb_maybe_stop_tx(tx_ring, skb_shinfo(skb)->nr_frags + 4)) { |
9d5c8243 | 4308 | /* this is a hard error */ |
9d5c8243 AK |
4309 | return NETDEV_TX_BUSY; |
4310 | } | |
33af6bcc | 4311 | |
2244d07b OH |
4312 | if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) { |
4313 | skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; | |
33af6bcc | 4314 | tx_flags |= IGB_TX_FLAGS_TSTAMP; |
33af6bcc | 4315 | } |
9d5c8243 | 4316 | |
eab6d18d | 4317 | if (vlan_tx_tag_present(skb)) { |
9d5c8243 AK |
4318 | tx_flags |= IGB_TX_FLAGS_VLAN; |
4319 | tx_flags |= (vlan_tx_tag_get(skb) << IGB_TX_FLAGS_VLAN_SHIFT); | |
4320 | } | |
4321 | ||
661086df PWJ |
4322 | if (skb->protocol == htons(ETH_P_IP)) |
4323 | tx_flags |= IGB_TX_FLAGS_IPV4; | |
4324 | ||
0e014cb1 | 4325 | first = tx_ring->next_to_use; |
85ad76b2 AD |
4326 | if (skb_is_gso(skb)) { |
4327 | tso = igb_tso_adv(tx_ring, skb, tx_flags, &hdr_len); | |
cdfd01fc | 4328 | |
85ad76b2 AD |
4329 | if (tso < 0) { |
4330 | dev_kfree_skb_any(skb); | |
4331 | return NETDEV_TX_OK; | |
4332 | } | |
9d5c8243 AK |
4333 | } |
4334 | ||
4335 | if (tso) | |
4336 | tx_flags |= IGB_TX_FLAGS_TSO; | |
85ad76b2 | 4337 | else if (igb_tx_csum_adv(tx_ring, skb, tx_flags) && |
bc1cbd34 AD |
4338 | (skb->ip_summed == CHECKSUM_PARTIAL)) |
4339 | tx_flags |= IGB_TX_FLAGS_CSUM; | |
9d5c8243 | 4340 | |
65689fef | 4341 | /* |
cdfd01fc | 4342 | * count reflects descriptors mapped, if 0 or less then mapping error |
25985edc | 4343 | * has occurred and we need to rewind the descriptor queue |
65689fef | 4344 | */ |
80785298 | 4345 | count = igb_tx_map_adv(tx_ring, skb, first); |
6366ad33 | 4346 | if (!count) { |
65689fef AD |
4347 | dev_kfree_skb_any(skb); |
4348 | tx_ring->buffer_info[first].time_stamp = 0; | |
4349 | tx_ring->next_to_use = first; | |
85ad76b2 | 4350 | return NETDEV_TX_OK; |
65689fef | 4351 | } |
9d5c8243 | 4352 | |
85ad76b2 AD |
4353 | igb_tx_queue_adv(tx_ring, tx_flags, count, skb->len, hdr_len); |
4354 | ||
4355 | /* Make sure there is space in the ring for the next send. */ | |
e694e964 | 4356 | igb_maybe_stop_tx(tx_ring, MAX_SKB_FRAGS + 4); |
85ad76b2 | 4357 | |
9d5c8243 AK |
4358 | return NETDEV_TX_OK; |
4359 | } | |
4360 | ||
3b29a56d SH |
4361 | static netdev_tx_t igb_xmit_frame_adv(struct sk_buff *skb, |
4362 | struct net_device *netdev) | |
9d5c8243 AK |
4363 | { |
4364 | struct igb_adapter *adapter = netdev_priv(netdev); | |
661086df | 4365 | struct igb_ring *tx_ring; |
661086df | 4366 | int r_idx = 0; |
b1a436c3 AD |
4367 | |
4368 | if (test_bit(__IGB_DOWN, &adapter->state)) { | |
4369 | dev_kfree_skb_any(skb); | |
4370 | return NETDEV_TX_OK; | |
4371 | } | |
4372 | ||
4373 | if (skb->len <= 0) { | |
4374 | dev_kfree_skb_any(skb); | |
4375 | return NETDEV_TX_OK; | |
4376 | } | |
4377 | ||
1bfaf07b | 4378 | r_idx = skb->queue_mapping & (IGB_ABS_MAX_TX_QUEUES - 1); |
661086df | 4379 | tx_ring = adapter->multi_tx_table[r_idx]; |
9d5c8243 AK |
4380 | |
4381 | /* This goes back to the question of how to logically map a tx queue | |
4382 | * to a flow. Right now, performance is impacted slightly negatively | |
4383 | * if using multiple tx queues. If the stack breaks away from a | |
4384 | * single qdisc implementation, we can look at this again. */ | |
e694e964 | 4385 | return igb_xmit_frame_ring_adv(skb, tx_ring); |
9d5c8243 AK |
4386 | } |
4387 | ||
4388 | /** | |
4389 | * igb_tx_timeout - Respond to a Tx Hang | |
4390 | * @netdev: network interface device structure | |
4391 | **/ | |
4392 | static void igb_tx_timeout(struct net_device *netdev) | |
4393 | { | |
4394 | struct igb_adapter *adapter = netdev_priv(netdev); | |
4395 | struct e1000_hw *hw = &adapter->hw; | |
4396 | ||
4397 | /* Do the reset outside of interrupt context */ | |
4398 | adapter->tx_timeout_count++; | |
f7ba205e | 4399 | |
55cac248 AD |
4400 | if (hw->mac.type == e1000_82580) |
4401 | hw->dev_spec._82575.global_device_reset = true; | |
4402 | ||
9d5c8243 | 4403 | schedule_work(&adapter->reset_task); |
265de409 AD |
4404 | wr32(E1000_EICS, |
4405 | (adapter->eims_enable_mask & ~adapter->eims_other)); | |
9d5c8243 AK |
4406 | } |
4407 | ||
4408 | static void igb_reset_task(struct work_struct *work) | |
4409 | { | |
4410 | struct igb_adapter *adapter; | |
4411 | adapter = container_of(work, struct igb_adapter, reset_task); | |
4412 | ||
c97ec42a TI |
4413 | igb_dump(adapter); |
4414 | netdev_err(adapter->netdev, "Reset adapter\n"); | |
9d5c8243 AK |
4415 | igb_reinit_locked(adapter); |
4416 | } | |
4417 | ||
4418 | /** | |
12dcd86b | 4419 | * igb_get_stats64 - Get System Network Statistics |
9d5c8243 | 4420 | * @netdev: network interface device structure |
12dcd86b | 4421 | * @stats: rtnl_link_stats64 pointer |
9d5c8243 | 4422 | * |
9d5c8243 | 4423 | **/ |
12dcd86b ED |
4424 | static struct rtnl_link_stats64 *igb_get_stats64(struct net_device *netdev, |
4425 | struct rtnl_link_stats64 *stats) | |
9d5c8243 | 4426 | { |
12dcd86b ED |
4427 | struct igb_adapter *adapter = netdev_priv(netdev); |
4428 | ||
4429 | spin_lock(&adapter->stats64_lock); | |
4430 | igb_update_stats(adapter, &adapter->stats64); | |
4431 | memcpy(stats, &adapter->stats64, sizeof(*stats)); | |
4432 | spin_unlock(&adapter->stats64_lock); | |
4433 | ||
4434 | return stats; | |
9d5c8243 AK |
4435 | } |
4436 | ||
4437 | /** | |
4438 | * igb_change_mtu - Change the Maximum Transfer Unit | |
4439 | * @netdev: network interface device structure | |
4440 | * @new_mtu: new value for maximum frame size | |
4441 | * | |
4442 | * Returns 0 on success, negative on failure | |
4443 | **/ | |
4444 | static int igb_change_mtu(struct net_device *netdev, int new_mtu) | |
4445 | { | |
4446 | struct igb_adapter *adapter = netdev_priv(netdev); | |
090b1795 | 4447 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 | 4448 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; |
4c844851 | 4449 | u32 rx_buffer_len, i; |
9d5c8243 | 4450 | |
c809d227 | 4451 | if ((new_mtu < 68) || (max_frame > MAX_JUMBO_FRAME_SIZE)) { |
090b1795 | 4452 | dev_err(&pdev->dev, "Invalid MTU setting\n"); |
9d5c8243 AK |
4453 | return -EINVAL; |
4454 | } | |
4455 | ||
9d5c8243 | 4456 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { |
090b1795 | 4457 | dev_err(&pdev->dev, "MTU > 9216 not supported.\n"); |
9d5c8243 AK |
4458 | return -EINVAL; |
4459 | } | |
4460 | ||
4461 | while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) | |
4462 | msleep(1); | |
73cd78f1 | 4463 | |
9d5c8243 AK |
4464 | /* igb_down has a dependency on max_frame_size */ |
4465 | adapter->max_frame_size = max_frame; | |
559e9c49 | 4466 | |
9d5c8243 AK |
4467 | /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
4468 | * means we reserve 2 more, this pushes us to allocate from the next | |
4469 | * larger slab size. | |
4470 | * i.e. RXBUFFER_2048 --> size-4096 slab | |
4471 | */ | |
4472 | ||
757b77e2 NN |
4473 | if (adapter->hw.mac.type == e1000_82580) |
4474 | max_frame += IGB_TS_HDR_LEN; | |
4475 | ||
7d95b717 | 4476 | if (max_frame <= IGB_RXBUFFER_1024) |
4c844851 | 4477 | rx_buffer_len = IGB_RXBUFFER_1024; |
6ec43fe6 | 4478 | else if (max_frame <= MAXIMUM_ETHERNET_VLAN_SIZE) |
4c844851 | 4479 | rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; |
6ec43fe6 | 4480 | else |
4c844851 AD |
4481 | rx_buffer_len = IGB_RXBUFFER_128; |
4482 | ||
757b77e2 NN |
4483 | if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN + IGB_TS_HDR_LEN) || |
4484 | (max_frame == MAXIMUM_ETHERNET_VLAN_SIZE + IGB_TS_HDR_LEN)) | |
4485 | rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE + IGB_TS_HDR_LEN; | |
4486 | ||
4487 | if ((adapter->hw.mac.type == e1000_82580) && | |
4488 | (rx_buffer_len == IGB_RXBUFFER_128)) | |
4489 | rx_buffer_len += IGB_RXBUFFER_64; | |
4490 | ||
4c844851 AD |
4491 | if (netif_running(netdev)) |
4492 | igb_down(adapter); | |
9d5c8243 | 4493 | |
090b1795 | 4494 | dev_info(&pdev->dev, "changing MTU from %d to %d\n", |
9d5c8243 AK |
4495 | netdev->mtu, new_mtu); |
4496 | netdev->mtu = new_mtu; | |
4497 | ||
4c844851 | 4498 | for (i = 0; i < adapter->num_rx_queues; i++) |
3025a446 | 4499 | adapter->rx_ring[i]->rx_buffer_len = rx_buffer_len; |
4c844851 | 4500 | |
9d5c8243 AK |
4501 | if (netif_running(netdev)) |
4502 | igb_up(adapter); | |
4503 | else | |
4504 | igb_reset(adapter); | |
4505 | ||
4506 | clear_bit(__IGB_RESETTING, &adapter->state); | |
4507 | ||
4508 | return 0; | |
4509 | } | |
4510 | ||
4511 | /** | |
4512 | * igb_update_stats - Update the board statistics counters | |
4513 | * @adapter: board private structure | |
4514 | **/ | |
4515 | ||
12dcd86b ED |
4516 | void igb_update_stats(struct igb_adapter *adapter, |
4517 | struct rtnl_link_stats64 *net_stats) | |
9d5c8243 AK |
4518 | { |
4519 | struct e1000_hw *hw = &adapter->hw; | |
4520 | struct pci_dev *pdev = adapter->pdev; | |
fa3d9a6d | 4521 | u32 reg, mpc; |
9d5c8243 | 4522 | u16 phy_tmp; |
3f9c0164 AD |
4523 | int i; |
4524 | u64 bytes, packets; | |
12dcd86b ED |
4525 | unsigned int start; |
4526 | u64 _bytes, _packets; | |
9d5c8243 AK |
4527 | |
4528 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF | |
4529 | ||
4530 | /* | |
4531 | * Prevent stats update while adapter is being reset, or if the pci | |
4532 | * connection is down. | |
4533 | */ | |
4534 | if (adapter->link_speed == 0) | |
4535 | return; | |
4536 | if (pci_channel_offline(pdev)) | |
4537 | return; | |
4538 | ||
3f9c0164 AD |
4539 | bytes = 0; |
4540 | packets = 0; | |
4541 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
4542 | u32 rqdpc_tmp = rd32(E1000_RQDPC(i)) & 0x0FFF; | |
3025a446 | 4543 | struct igb_ring *ring = adapter->rx_ring[i]; |
12dcd86b | 4544 | |
3025a446 | 4545 | ring->rx_stats.drops += rqdpc_tmp; |
128e45eb | 4546 | net_stats->rx_fifo_errors += rqdpc_tmp; |
12dcd86b ED |
4547 | |
4548 | do { | |
4549 | start = u64_stats_fetch_begin_bh(&ring->rx_syncp); | |
4550 | _bytes = ring->rx_stats.bytes; | |
4551 | _packets = ring->rx_stats.packets; | |
4552 | } while (u64_stats_fetch_retry_bh(&ring->rx_syncp, start)); | |
4553 | bytes += _bytes; | |
4554 | packets += _packets; | |
3f9c0164 AD |
4555 | } |
4556 | ||
128e45eb AD |
4557 | net_stats->rx_bytes = bytes; |
4558 | net_stats->rx_packets = packets; | |
3f9c0164 AD |
4559 | |
4560 | bytes = 0; | |
4561 | packets = 0; | |
4562 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
3025a446 | 4563 | struct igb_ring *ring = adapter->tx_ring[i]; |
12dcd86b ED |
4564 | do { |
4565 | start = u64_stats_fetch_begin_bh(&ring->tx_syncp); | |
4566 | _bytes = ring->tx_stats.bytes; | |
4567 | _packets = ring->tx_stats.packets; | |
4568 | } while (u64_stats_fetch_retry_bh(&ring->tx_syncp, start)); | |
4569 | bytes += _bytes; | |
4570 | packets += _packets; | |
3f9c0164 | 4571 | } |
128e45eb AD |
4572 | net_stats->tx_bytes = bytes; |
4573 | net_stats->tx_packets = packets; | |
3f9c0164 AD |
4574 | |
4575 | /* read stats registers */ | |
9d5c8243 AK |
4576 | adapter->stats.crcerrs += rd32(E1000_CRCERRS); |
4577 | adapter->stats.gprc += rd32(E1000_GPRC); | |
4578 | adapter->stats.gorc += rd32(E1000_GORCL); | |
4579 | rd32(E1000_GORCH); /* clear GORCL */ | |
4580 | adapter->stats.bprc += rd32(E1000_BPRC); | |
4581 | adapter->stats.mprc += rd32(E1000_MPRC); | |
4582 | adapter->stats.roc += rd32(E1000_ROC); | |
4583 | ||
4584 | adapter->stats.prc64 += rd32(E1000_PRC64); | |
4585 | adapter->stats.prc127 += rd32(E1000_PRC127); | |
4586 | adapter->stats.prc255 += rd32(E1000_PRC255); | |
4587 | adapter->stats.prc511 += rd32(E1000_PRC511); | |
4588 | adapter->stats.prc1023 += rd32(E1000_PRC1023); | |
4589 | adapter->stats.prc1522 += rd32(E1000_PRC1522); | |
4590 | adapter->stats.symerrs += rd32(E1000_SYMERRS); | |
4591 | adapter->stats.sec += rd32(E1000_SEC); | |
4592 | ||
fa3d9a6d MW |
4593 | mpc = rd32(E1000_MPC); |
4594 | adapter->stats.mpc += mpc; | |
4595 | net_stats->rx_fifo_errors += mpc; | |
9d5c8243 AK |
4596 | adapter->stats.scc += rd32(E1000_SCC); |
4597 | adapter->stats.ecol += rd32(E1000_ECOL); | |
4598 | adapter->stats.mcc += rd32(E1000_MCC); | |
4599 | adapter->stats.latecol += rd32(E1000_LATECOL); | |
4600 | adapter->stats.dc += rd32(E1000_DC); | |
4601 | adapter->stats.rlec += rd32(E1000_RLEC); | |
4602 | adapter->stats.xonrxc += rd32(E1000_XONRXC); | |
4603 | adapter->stats.xontxc += rd32(E1000_XONTXC); | |
4604 | adapter->stats.xoffrxc += rd32(E1000_XOFFRXC); | |
4605 | adapter->stats.xofftxc += rd32(E1000_XOFFTXC); | |
4606 | adapter->stats.fcruc += rd32(E1000_FCRUC); | |
4607 | adapter->stats.gptc += rd32(E1000_GPTC); | |
4608 | adapter->stats.gotc += rd32(E1000_GOTCL); | |
4609 | rd32(E1000_GOTCH); /* clear GOTCL */ | |
fa3d9a6d | 4610 | adapter->stats.rnbc += rd32(E1000_RNBC); |
9d5c8243 AK |
4611 | adapter->stats.ruc += rd32(E1000_RUC); |
4612 | adapter->stats.rfc += rd32(E1000_RFC); | |
4613 | adapter->stats.rjc += rd32(E1000_RJC); | |
4614 | adapter->stats.tor += rd32(E1000_TORH); | |
4615 | adapter->stats.tot += rd32(E1000_TOTH); | |
4616 | adapter->stats.tpr += rd32(E1000_TPR); | |
4617 | ||
4618 | adapter->stats.ptc64 += rd32(E1000_PTC64); | |
4619 | adapter->stats.ptc127 += rd32(E1000_PTC127); | |
4620 | adapter->stats.ptc255 += rd32(E1000_PTC255); | |
4621 | adapter->stats.ptc511 += rd32(E1000_PTC511); | |
4622 | adapter->stats.ptc1023 += rd32(E1000_PTC1023); | |
4623 | adapter->stats.ptc1522 += rd32(E1000_PTC1522); | |
4624 | ||
4625 | adapter->stats.mptc += rd32(E1000_MPTC); | |
4626 | adapter->stats.bptc += rd32(E1000_BPTC); | |
4627 | ||
2d0b0f69 NN |
4628 | adapter->stats.tpt += rd32(E1000_TPT); |
4629 | adapter->stats.colc += rd32(E1000_COLC); | |
9d5c8243 AK |
4630 | |
4631 | adapter->stats.algnerrc += rd32(E1000_ALGNERRC); | |
43915c7c NN |
4632 | /* read internal phy specific stats */ |
4633 | reg = rd32(E1000_CTRL_EXT); | |
4634 | if (!(reg & E1000_CTRL_EXT_LINK_MODE_MASK)) { | |
4635 | adapter->stats.rxerrc += rd32(E1000_RXERRC); | |
4636 | adapter->stats.tncrs += rd32(E1000_TNCRS); | |
4637 | } | |
4638 | ||
9d5c8243 AK |
4639 | adapter->stats.tsctc += rd32(E1000_TSCTC); |
4640 | adapter->stats.tsctfc += rd32(E1000_TSCTFC); | |
4641 | ||
4642 | adapter->stats.iac += rd32(E1000_IAC); | |
4643 | adapter->stats.icrxoc += rd32(E1000_ICRXOC); | |
4644 | adapter->stats.icrxptc += rd32(E1000_ICRXPTC); | |
4645 | adapter->stats.icrxatc += rd32(E1000_ICRXATC); | |
4646 | adapter->stats.ictxptc += rd32(E1000_ICTXPTC); | |
4647 | adapter->stats.ictxatc += rd32(E1000_ICTXATC); | |
4648 | adapter->stats.ictxqec += rd32(E1000_ICTXQEC); | |
4649 | adapter->stats.ictxqmtc += rd32(E1000_ICTXQMTC); | |
4650 | adapter->stats.icrxdmtc += rd32(E1000_ICRXDMTC); | |
4651 | ||
4652 | /* Fill out the OS statistics structure */ | |
128e45eb AD |
4653 | net_stats->multicast = adapter->stats.mprc; |
4654 | net_stats->collisions = adapter->stats.colc; | |
9d5c8243 AK |
4655 | |
4656 | /* Rx Errors */ | |
4657 | ||
4658 | /* RLEC on some newer hardware can be incorrect so build | |
8c0ab70a | 4659 | * our own version based on RUC and ROC */ |
128e45eb | 4660 | net_stats->rx_errors = adapter->stats.rxerrc + |
9d5c8243 AK |
4661 | adapter->stats.crcerrs + adapter->stats.algnerrc + |
4662 | adapter->stats.ruc + adapter->stats.roc + | |
4663 | adapter->stats.cexterr; | |
128e45eb AD |
4664 | net_stats->rx_length_errors = adapter->stats.ruc + |
4665 | adapter->stats.roc; | |
4666 | net_stats->rx_crc_errors = adapter->stats.crcerrs; | |
4667 | net_stats->rx_frame_errors = adapter->stats.algnerrc; | |
4668 | net_stats->rx_missed_errors = adapter->stats.mpc; | |
9d5c8243 AK |
4669 | |
4670 | /* Tx Errors */ | |
128e45eb AD |
4671 | net_stats->tx_errors = adapter->stats.ecol + |
4672 | adapter->stats.latecol; | |
4673 | net_stats->tx_aborted_errors = adapter->stats.ecol; | |
4674 | net_stats->tx_window_errors = adapter->stats.latecol; | |
4675 | net_stats->tx_carrier_errors = adapter->stats.tncrs; | |
9d5c8243 AK |
4676 | |
4677 | /* Tx Dropped needs to be maintained elsewhere */ | |
4678 | ||
4679 | /* Phy Stats */ | |
4680 | if (hw->phy.media_type == e1000_media_type_copper) { | |
4681 | if ((adapter->link_speed == SPEED_1000) && | |
73cd78f1 | 4682 | (!igb_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
9d5c8243 AK |
4683 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; |
4684 | adapter->phy_stats.idle_errors += phy_tmp; | |
4685 | } | |
4686 | } | |
4687 | ||
4688 | /* Management Stats */ | |
4689 | adapter->stats.mgptc += rd32(E1000_MGTPTC); | |
4690 | adapter->stats.mgprc += rd32(E1000_MGTPRC); | |
4691 | adapter->stats.mgpdc += rd32(E1000_MGTPDC); | |
0a915b95 CW |
4692 | |
4693 | /* OS2BMC Stats */ | |
4694 | reg = rd32(E1000_MANC); | |
4695 | if (reg & E1000_MANC_EN_BMC2OS) { | |
4696 | adapter->stats.o2bgptc += rd32(E1000_O2BGPTC); | |
4697 | adapter->stats.o2bspc += rd32(E1000_O2BSPC); | |
4698 | adapter->stats.b2ospc += rd32(E1000_B2OSPC); | |
4699 | adapter->stats.b2ogprc += rd32(E1000_B2OGPRC); | |
4700 | } | |
9d5c8243 AK |
4701 | } |
4702 | ||
9d5c8243 AK |
4703 | static irqreturn_t igb_msix_other(int irq, void *data) |
4704 | { | |
047e0030 | 4705 | struct igb_adapter *adapter = data; |
9d5c8243 | 4706 | struct e1000_hw *hw = &adapter->hw; |
844290e5 | 4707 | u32 icr = rd32(E1000_ICR); |
844290e5 | 4708 | /* reading ICR causes bit 31 of EICR to be cleared */ |
dda0e083 | 4709 | |
7f081d40 AD |
4710 | if (icr & E1000_ICR_DRSTA) |
4711 | schedule_work(&adapter->reset_task); | |
4712 | ||
047e0030 | 4713 | if (icr & E1000_ICR_DOUTSYNC) { |
dda0e083 AD |
4714 | /* HW is reporting DMA is out of sync */ |
4715 | adapter->stats.doosync++; | |
13800469 GR |
4716 | /* The DMA Out of Sync is also indication of a spoof event |
4717 | * in IOV mode. Check the Wrong VM Behavior register to | |
4718 | * see if it is really a spoof event. */ | |
4719 | igb_check_wvbr(adapter); | |
dda0e083 | 4720 | } |
eebbbdba | 4721 | |
4ae196df AD |
4722 | /* Check for a mailbox event */ |
4723 | if (icr & E1000_ICR_VMMB) | |
4724 | igb_msg_task(adapter); | |
4725 | ||
4726 | if (icr & E1000_ICR_LSC) { | |
4727 | hw->mac.get_link_status = 1; | |
4728 | /* guard against interrupt when we're going down */ | |
4729 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
4730 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
4731 | } | |
4732 | ||
25568a53 AD |
4733 | if (adapter->vfs_allocated_count) |
4734 | wr32(E1000_IMS, E1000_IMS_LSC | | |
4735 | E1000_IMS_VMMB | | |
4736 | E1000_IMS_DOUTSYNC); | |
4737 | else | |
4738 | wr32(E1000_IMS, E1000_IMS_LSC | E1000_IMS_DOUTSYNC); | |
844290e5 | 4739 | wr32(E1000_EIMS, adapter->eims_other); |
9d5c8243 AK |
4740 | |
4741 | return IRQ_HANDLED; | |
4742 | } | |
4743 | ||
047e0030 | 4744 | static void igb_write_itr(struct igb_q_vector *q_vector) |
9d5c8243 | 4745 | { |
26b39276 | 4746 | struct igb_adapter *adapter = q_vector->adapter; |
047e0030 | 4747 | u32 itr_val = q_vector->itr_val & 0x7FFC; |
9d5c8243 | 4748 | |
047e0030 AD |
4749 | if (!q_vector->set_itr) |
4750 | return; | |
73cd78f1 | 4751 | |
047e0030 AD |
4752 | if (!itr_val) |
4753 | itr_val = 0x4; | |
661086df | 4754 | |
26b39276 AD |
4755 | if (adapter->hw.mac.type == e1000_82575) |
4756 | itr_val |= itr_val << 16; | |
661086df | 4757 | else |
047e0030 | 4758 | itr_val |= 0x8000000; |
661086df | 4759 | |
047e0030 AD |
4760 | writel(itr_val, q_vector->itr_register); |
4761 | q_vector->set_itr = 0; | |
6eb5a7f1 AD |
4762 | } |
4763 | ||
047e0030 | 4764 | static irqreturn_t igb_msix_ring(int irq, void *data) |
9d5c8243 | 4765 | { |
047e0030 | 4766 | struct igb_q_vector *q_vector = data; |
9d5c8243 | 4767 | |
047e0030 AD |
4768 | /* Write the ITR value calculated from the previous interrupt. */ |
4769 | igb_write_itr(q_vector); | |
9d5c8243 | 4770 | |
047e0030 | 4771 | napi_schedule(&q_vector->napi); |
844290e5 | 4772 | |
047e0030 | 4773 | return IRQ_HANDLED; |
fe4506b6 JC |
4774 | } |
4775 | ||
421e02f0 | 4776 | #ifdef CONFIG_IGB_DCA |
047e0030 | 4777 | static void igb_update_dca(struct igb_q_vector *q_vector) |
fe4506b6 | 4778 | { |
047e0030 | 4779 | struct igb_adapter *adapter = q_vector->adapter; |
fe4506b6 JC |
4780 | struct e1000_hw *hw = &adapter->hw; |
4781 | int cpu = get_cpu(); | |
fe4506b6 | 4782 | |
047e0030 AD |
4783 | if (q_vector->cpu == cpu) |
4784 | goto out_no_update; | |
4785 | ||
4786 | if (q_vector->tx_ring) { | |
4787 | int q = q_vector->tx_ring->reg_idx; | |
4788 | u32 dca_txctrl = rd32(E1000_DCA_TXCTRL(q)); | |
4789 | if (hw->mac.type == e1000_82575) { | |
4790 | dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK; | |
4791 | dca_txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu); | |
2d064c06 | 4792 | } else { |
047e0030 AD |
4793 | dca_txctrl &= ~E1000_DCA_TXCTRL_CPUID_MASK_82576; |
4794 | dca_txctrl |= dca3_get_tag(&adapter->pdev->dev, cpu) << | |
4795 | E1000_DCA_TXCTRL_CPUID_SHIFT; | |
4796 | } | |
4797 | dca_txctrl |= E1000_DCA_TXCTRL_DESC_DCA_EN; | |
4798 | wr32(E1000_DCA_TXCTRL(q), dca_txctrl); | |
4799 | } | |
4800 | if (q_vector->rx_ring) { | |
4801 | int q = q_vector->rx_ring->reg_idx; | |
4802 | u32 dca_rxctrl = rd32(E1000_DCA_RXCTRL(q)); | |
4803 | if (hw->mac.type == e1000_82575) { | |
2d064c06 | 4804 | dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK; |
92be7917 | 4805 | dca_rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu); |
047e0030 AD |
4806 | } else { |
4807 | dca_rxctrl &= ~E1000_DCA_RXCTRL_CPUID_MASK_82576; | |
4808 | dca_rxctrl |= dca3_get_tag(&adapter->pdev->dev, cpu) << | |
4809 | E1000_DCA_RXCTRL_CPUID_SHIFT; | |
2d064c06 | 4810 | } |
fe4506b6 JC |
4811 | dca_rxctrl |= E1000_DCA_RXCTRL_DESC_DCA_EN; |
4812 | dca_rxctrl |= E1000_DCA_RXCTRL_HEAD_DCA_EN; | |
4813 | dca_rxctrl |= E1000_DCA_RXCTRL_DATA_DCA_EN; | |
4814 | wr32(E1000_DCA_RXCTRL(q), dca_rxctrl); | |
fe4506b6 | 4815 | } |
047e0030 AD |
4816 | q_vector->cpu = cpu; |
4817 | out_no_update: | |
fe4506b6 JC |
4818 | put_cpu(); |
4819 | } | |
4820 | ||
4821 | static void igb_setup_dca(struct igb_adapter *adapter) | |
4822 | { | |
7e0e99ef | 4823 | struct e1000_hw *hw = &adapter->hw; |
fe4506b6 JC |
4824 | int i; |
4825 | ||
7dfc16fa | 4826 | if (!(adapter->flags & IGB_FLAG_DCA_ENABLED)) |
fe4506b6 JC |
4827 | return; |
4828 | ||
7e0e99ef AD |
4829 | /* Always use CB2 mode, difference is masked in the CB driver. */ |
4830 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_CB2); | |
4831 | ||
047e0030 | 4832 | for (i = 0; i < adapter->num_q_vectors; i++) { |
26b39276 AD |
4833 | adapter->q_vector[i]->cpu = -1; |
4834 | igb_update_dca(adapter->q_vector[i]); | |
fe4506b6 JC |
4835 | } |
4836 | } | |
4837 | ||
4838 | static int __igb_notify_dca(struct device *dev, void *data) | |
4839 | { | |
4840 | struct net_device *netdev = dev_get_drvdata(dev); | |
4841 | struct igb_adapter *adapter = netdev_priv(netdev); | |
090b1795 | 4842 | struct pci_dev *pdev = adapter->pdev; |
fe4506b6 JC |
4843 | struct e1000_hw *hw = &adapter->hw; |
4844 | unsigned long event = *(unsigned long *)data; | |
4845 | ||
4846 | switch (event) { | |
4847 | case DCA_PROVIDER_ADD: | |
4848 | /* if already enabled, don't do it again */ | |
7dfc16fa | 4849 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) |
fe4506b6 | 4850 | break; |
fe4506b6 | 4851 | if (dca_add_requester(dev) == 0) { |
bbd98fe4 | 4852 | adapter->flags |= IGB_FLAG_DCA_ENABLED; |
090b1795 | 4853 | dev_info(&pdev->dev, "DCA enabled\n"); |
fe4506b6 JC |
4854 | igb_setup_dca(adapter); |
4855 | break; | |
4856 | } | |
4857 | /* Fall Through since DCA is disabled. */ | |
4858 | case DCA_PROVIDER_REMOVE: | |
7dfc16fa | 4859 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) { |
fe4506b6 | 4860 | /* without this a class_device is left |
047e0030 | 4861 | * hanging around in the sysfs model */ |
fe4506b6 | 4862 | dca_remove_requester(dev); |
090b1795 | 4863 | dev_info(&pdev->dev, "DCA disabled\n"); |
7dfc16fa | 4864 | adapter->flags &= ~IGB_FLAG_DCA_ENABLED; |
cbd347ad | 4865 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE); |
fe4506b6 JC |
4866 | } |
4867 | break; | |
4868 | } | |
bbd98fe4 | 4869 | |
fe4506b6 | 4870 | return 0; |
9d5c8243 AK |
4871 | } |
4872 | ||
fe4506b6 JC |
4873 | static int igb_notify_dca(struct notifier_block *nb, unsigned long event, |
4874 | void *p) | |
4875 | { | |
4876 | int ret_val; | |
4877 | ||
4878 | ret_val = driver_for_each_device(&igb_driver.driver, NULL, &event, | |
4879 | __igb_notify_dca); | |
4880 | ||
4881 | return ret_val ? NOTIFY_BAD : NOTIFY_DONE; | |
4882 | } | |
421e02f0 | 4883 | #endif /* CONFIG_IGB_DCA */ |
9d5c8243 | 4884 | |
4ae196df AD |
4885 | static void igb_ping_all_vfs(struct igb_adapter *adapter) |
4886 | { | |
4887 | struct e1000_hw *hw = &adapter->hw; | |
4888 | u32 ping; | |
4889 | int i; | |
4890 | ||
4891 | for (i = 0 ; i < adapter->vfs_allocated_count; i++) { | |
4892 | ping = E1000_PF_CONTROL_MSG; | |
f2ca0dbe | 4893 | if (adapter->vf_data[i].flags & IGB_VF_FLAG_CTS) |
4ae196df AD |
4894 | ping |= E1000_VT_MSGTYPE_CTS; |
4895 | igb_write_mbx(hw, &ping, 1, i); | |
4896 | } | |
4897 | } | |
4898 | ||
7d5753f0 AD |
4899 | static int igb_set_vf_promisc(struct igb_adapter *adapter, u32 *msgbuf, u32 vf) |
4900 | { | |
4901 | struct e1000_hw *hw = &adapter->hw; | |
4902 | u32 vmolr = rd32(E1000_VMOLR(vf)); | |
4903 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; | |
4904 | ||
d85b9004 | 4905 | vf_data->flags &= ~(IGB_VF_FLAG_UNI_PROMISC | |
7d5753f0 AD |
4906 | IGB_VF_FLAG_MULTI_PROMISC); |
4907 | vmolr &= ~(E1000_VMOLR_ROPE | E1000_VMOLR_ROMPE | E1000_VMOLR_MPME); | |
4908 | ||
4909 | if (*msgbuf & E1000_VF_SET_PROMISC_MULTICAST) { | |
4910 | vmolr |= E1000_VMOLR_MPME; | |
d85b9004 | 4911 | vf_data->flags |= IGB_VF_FLAG_MULTI_PROMISC; |
7d5753f0 AD |
4912 | *msgbuf &= ~E1000_VF_SET_PROMISC_MULTICAST; |
4913 | } else { | |
4914 | /* | |
4915 | * if we have hashes and we are clearing a multicast promisc | |
4916 | * flag we need to write the hashes to the MTA as this step | |
4917 | * was previously skipped | |
4918 | */ | |
4919 | if (vf_data->num_vf_mc_hashes > 30) { | |
4920 | vmolr |= E1000_VMOLR_MPME; | |
4921 | } else if (vf_data->num_vf_mc_hashes) { | |
4922 | int j; | |
4923 | vmolr |= E1000_VMOLR_ROMPE; | |
4924 | for (j = 0; j < vf_data->num_vf_mc_hashes; j++) | |
4925 | igb_mta_set(hw, vf_data->vf_mc_hashes[j]); | |
4926 | } | |
4927 | } | |
4928 | ||
4929 | wr32(E1000_VMOLR(vf), vmolr); | |
4930 | ||
4931 | /* there are flags left unprocessed, likely not supported */ | |
4932 | if (*msgbuf & E1000_VT_MSGINFO_MASK) | |
4933 | return -EINVAL; | |
4934 | ||
4935 | return 0; | |
4936 | ||
4937 | } | |
4938 | ||
4ae196df AD |
4939 | static int igb_set_vf_multicasts(struct igb_adapter *adapter, |
4940 | u32 *msgbuf, u32 vf) | |
4941 | { | |
4942 | int n = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT; | |
4943 | u16 *hash_list = (u16 *)&msgbuf[1]; | |
4944 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; | |
4945 | int i; | |
4946 | ||
7d5753f0 | 4947 | /* salt away the number of multicast addresses assigned |
4ae196df AD |
4948 | * to this VF for later use to restore when the PF multi cast |
4949 | * list changes | |
4950 | */ | |
4951 | vf_data->num_vf_mc_hashes = n; | |
4952 | ||
7d5753f0 AD |
4953 | /* only up to 30 hash values supported */ |
4954 | if (n > 30) | |
4955 | n = 30; | |
4956 | ||
4957 | /* store the hashes for later use */ | |
4ae196df | 4958 | for (i = 0; i < n; i++) |
a419aef8 | 4959 | vf_data->vf_mc_hashes[i] = hash_list[i]; |
4ae196df AD |
4960 | |
4961 | /* Flush and reset the mta with the new values */ | |
ff41f8dc | 4962 | igb_set_rx_mode(adapter->netdev); |
4ae196df AD |
4963 | |
4964 | return 0; | |
4965 | } | |
4966 | ||
4967 | static void igb_restore_vf_multicasts(struct igb_adapter *adapter) | |
4968 | { | |
4969 | struct e1000_hw *hw = &adapter->hw; | |
4970 | struct vf_data_storage *vf_data; | |
4971 | int i, j; | |
4972 | ||
4973 | for (i = 0; i < adapter->vfs_allocated_count; i++) { | |
7d5753f0 AD |
4974 | u32 vmolr = rd32(E1000_VMOLR(i)); |
4975 | vmolr &= ~(E1000_VMOLR_ROMPE | E1000_VMOLR_MPME); | |
4976 | ||
4ae196df | 4977 | vf_data = &adapter->vf_data[i]; |
7d5753f0 AD |
4978 | |
4979 | if ((vf_data->num_vf_mc_hashes > 30) || | |
4980 | (vf_data->flags & IGB_VF_FLAG_MULTI_PROMISC)) { | |
4981 | vmolr |= E1000_VMOLR_MPME; | |
4982 | } else if (vf_data->num_vf_mc_hashes) { | |
4983 | vmolr |= E1000_VMOLR_ROMPE; | |
4984 | for (j = 0; j < vf_data->num_vf_mc_hashes; j++) | |
4985 | igb_mta_set(hw, vf_data->vf_mc_hashes[j]); | |
4986 | } | |
4987 | wr32(E1000_VMOLR(i), vmolr); | |
4ae196df AD |
4988 | } |
4989 | } | |
4990 | ||
4991 | static void igb_clear_vf_vfta(struct igb_adapter *adapter, u32 vf) | |
4992 | { | |
4993 | struct e1000_hw *hw = &adapter->hw; | |
4994 | u32 pool_mask, reg, vid; | |
4995 | int i; | |
4996 | ||
4997 | pool_mask = 1 << (E1000_VLVF_POOLSEL_SHIFT + vf); | |
4998 | ||
4999 | /* Find the vlan filter for this id */ | |
5000 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { | |
5001 | reg = rd32(E1000_VLVF(i)); | |
5002 | ||
5003 | /* remove the vf from the pool */ | |
5004 | reg &= ~pool_mask; | |
5005 | ||
5006 | /* if pool is empty then remove entry from vfta */ | |
5007 | if (!(reg & E1000_VLVF_POOLSEL_MASK) && | |
5008 | (reg & E1000_VLVF_VLANID_ENABLE)) { | |
5009 | reg = 0; | |
5010 | vid = reg & E1000_VLVF_VLANID_MASK; | |
5011 | igb_vfta_set(hw, vid, false); | |
5012 | } | |
5013 | ||
5014 | wr32(E1000_VLVF(i), reg); | |
5015 | } | |
ae641bdc AD |
5016 | |
5017 | adapter->vf_data[vf].vlans_enabled = 0; | |
4ae196df AD |
5018 | } |
5019 | ||
5020 | static s32 igb_vlvf_set(struct igb_adapter *adapter, u32 vid, bool add, u32 vf) | |
5021 | { | |
5022 | struct e1000_hw *hw = &adapter->hw; | |
5023 | u32 reg, i; | |
5024 | ||
51466239 AD |
5025 | /* The vlvf table only exists on 82576 hardware and newer */ |
5026 | if (hw->mac.type < e1000_82576) | |
5027 | return -1; | |
5028 | ||
5029 | /* we only need to do this if VMDq is enabled */ | |
4ae196df AD |
5030 | if (!adapter->vfs_allocated_count) |
5031 | return -1; | |
5032 | ||
5033 | /* Find the vlan filter for this id */ | |
5034 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { | |
5035 | reg = rd32(E1000_VLVF(i)); | |
5036 | if ((reg & E1000_VLVF_VLANID_ENABLE) && | |
5037 | vid == (reg & E1000_VLVF_VLANID_MASK)) | |
5038 | break; | |
5039 | } | |
5040 | ||
5041 | if (add) { | |
5042 | if (i == E1000_VLVF_ARRAY_SIZE) { | |
5043 | /* Did not find a matching VLAN ID entry that was | |
5044 | * enabled. Search for a free filter entry, i.e. | |
5045 | * one without the enable bit set | |
5046 | */ | |
5047 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { | |
5048 | reg = rd32(E1000_VLVF(i)); | |
5049 | if (!(reg & E1000_VLVF_VLANID_ENABLE)) | |
5050 | break; | |
5051 | } | |
5052 | } | |
5053 | if (i < E1000_VLVF_ARRAY_SIZE) { | |
5054 | /* Found an enabled/available entry */ | |
5055 | reg |= 1 << (E1000_VLVF_POOLSEL_SHIFT + vf); | |
5056 | ||
5057 | /* if !enabled we need to set this up in vfta */ | |
5058 | if (!(reg & E1000_VLVF_VLANID_ENABLE)) { | |
51466239 AD |
5059 | /* add VID to filter table */ |
5060 | igb_vfta_set(hw, vid, true); | |
4ae196df AD |
5061 | reg |= E1000_VLVF_VLANID_ENABLE; |
5062 | } | |
cad6d05f AD |
5063 | reg &= ~E1000_VLVF_VLANID_MASK; |
5064 | reg |= vid; | |
4ae196df | 5065 | wr32(E1000_VLVF(i), reg); |
ae641bdc AD |
5066 | |
5067 | /* do not modify RLPML for PF devices */ | |
5068 | if (vf >= adapter->vfs_allocated_count) | |
5069 | return 0; | |
5070 | ||
5071 | if (!adapter->vf_data[vf].vlans_enabled) { | |
5072 | u32 size; | |
5073 | reg = rd32(E1000_VMOLR(vf)); | |
5074 | size = reg & E1000_VMOLR_RLPML_MASK; | |
5075 | size += 4; | |
5076 | reg &= ~E1000_VMOLR_RLPML_MASK; | |
5077 | reg |= size; | |
5078 | wr32(E1000_VMOLR(vf), reg); | |
5079 | } | |
ae641bdc | 5080 | |
51466239 | 5081 | adapter->vf_data[vf].vlans_enabled++; |
4ae196df AD |
5082 | return 0; |
5083 | } | |
5084 | } else { | |
5085 | if (i < E1000_VLVF_ARRAY_SIZE) { | |
5086 | /* remove vf from the pool */ | |
5087 | reg &= ~(1 << (E1000_VLVF_POOLSEL_SHIFT + vf)); | |
5088 | /* if pool is empty then remove entry from vfta */ | |
5089 | if (!(reg & E1000_VLVF_POOLSEL_MASK)) { | |
5090 | reg = 0; | |
5091 | igb_vfta_set(hw, vid, false); | |
5092 | } | |
5093 | wr32(E1000_VLVF(i), reg); | |
ae641bdc AD |
5094 | |
5095 | /* do not modify RLPML for PF devices */ | |
5096 | if (vf >= adapter->vfs_allocated_count) | |
5097 | return 0; | |
5098 | ||
5099 | adapter->vf_data[vf].vlans_enabled--; | |
5100 | if (!adapter->vf_data[vf].vlans_enabled) { | |
5101 | u32 size; | |
5102 | reg = rd32(E1000_VMOLR(vf)); | |
5103 | size = reg & E1000_VMOLR_RLPML_MASK; | |
5104 | size -= 4; | |
5105 | reg &= ~E1000_VMOLR_RLPML_MASK; | |
5106 | reg |= size; | |
5107 | wr32(E1000_VMOLR(vf), reg); | |
5108 | } | |
4ae196df AD |
5109 | } |
5110 | } | |
8151d294 WM |
5111 | return 0; |
5112 | } | |
5113 | ||
5114 | static void igb_set_vmvir(struct igb_adapter *adapter, u32 vid, u32 vf) | |
5115 | { | |
5116 | struct e1000_hw *hw = &adapter->hw; | |
5117 | ||
5118 | if (vid) | |
5119 | wr32(E1000_VMVIR(vf), (vid | E1000_VMVIR_VLANA_DEFAULT)); | |
5120 | else | |
5121 | wr32(E1000_VMVIR(vf), 0); | |
5122 | } | |
5123 | ||
5124 | static int igb_ndo_set_vf_vlan(struct net_device *netdev, | |
5125 | int vf, u16 vlan, u8 qos) | |
5126 | { | |
5127 | int err = 0; | |
5128 | struct igb_adapter *adapter = netdev_priv(netdev); | |
5129 | ||
5130 | if ((vf >= adapter->vfs_allocated_count) || (vlan > 4095) || (qos > 7)) | |
5131 | return -EINVAL; | |
5132 | if (vlan || qos) { | |
5133 | err = igb_vlvf_set(adapter, vlan, !!vlan, vf); | |
5134 | if (err) | |
5135 | goto out; | |
5136 | igb_set_vmvir(adapter, vlan | (qos << VLAN_PRIO_SHIFT), vf); | |
5137 | igb_set_vmolr(adapter, vf, !vlan); | |
5138 | adapter->vf_data[vf].pf_vlan = vlan; | |
5139 | adapter->vf_data[vf].pf_qos = qos; | |
5140 | dev_info(&adapter->pdev->dev, | |
5141 | "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf); | |
5142 | if (test_bit(__IGB_DOWN, &adapter->state)) { | |
5143 | dev_warn(&adapter->pdev->dev, | |
5144 | "The VF VLAN has been set," | |
5145 | " but the PF device is not up.\n"); | |
5146 | dev_warn(&adapter->pdev->dev, | |
5147 | "Bring the PF device up before" | |
5148 | " attempting to use the VF device.\n"); | |
5149 | } | |
5150 | } else { | |
5151 | igb_vlvf_set(adapter, adapter->vf_data[vf].pf_vlan, | |
5152 | false, vf); | |
5153 | igb_set_vmvir(adapter, vlan, vf); | |
5154 | igb_set_vmolr(adapter, vf, true); | |
5155 | adapter->vf_data[vf].pf_vlan = 0; | |
5156 | adapter->vf_data[vf].pf_qos = 0; | |
5157 | } | |
5158 | out: | |
5159 | return err; | |
4ae196df AD |
5160 | } |
5161 | ||
5162 | static int igb_set_vf_vlan(struct igb_adapter *adapter, u32 *msgbuf, u32 vf) | |
5163 | { | |
5164 | int add = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT; | |
5165 | int vid = (msgbuf[1] & E1000_VLVF_VLANID_MASK); | |
5166 | ||
5167 | return igb_vlvf_set(adapter, vid, add, vf); | |
5168 | } | |
5169 | ||
f2ca0dbe | 5170 | static inline void igb_vf_reset(struct igb_adapter *adapter, u32 vf) |
4ae196df | 5171 | { |
8fa7e0f7 GR |
5172 | /* clear flags - except flag that indicates PF has set the MAC */ |
5173 | adapter->vf_data[vf].flags &= IGB_VF_FLAG_PF_SET_MAC; | |
f2ca0dbe | 5174 | adapter->vf_data[vf].last_nack = jiffies; |
4ae196df AD |
5175 | |
5176 | /* reset offloads to defaults */ | |
8151d294 | 5177 | igb_set_vmolr(adapter, vf, true); |
4ae196df AD |
5178 | |
5179 | /* reset vlans for device */ | |
5180 | igb_clear_vf_vfta(adapter, vf); | |
8151d294 WM |
5181 | if (adapter->vf_data[vf].pf_vlan) |
5182 | igb_ndo_set_vf_vlan(adapter->netdev, vf, | |
5183 | adapter->vf_data[vf].pf_vlan, | |
5184 | adapter->vf_data[vf].pf_qos); | |
5185 | else | |
5186 | igb_clear_vf_vfta(adapter, vf); | |
4ae196df AD |
5187 | |
5188 | /* reset multicast table array for vf */ | |
5189 | adapter->vf_data[vf].num_vf_mc_hashes = 0; | |
5190 | ||
5191 | /* Flush and reset the mta with the new values */ | |
ff41f8dc | 5192 | igb_set_rx_mode(adapter->netdev); |
4ae196df AD |
5193 | } |
5194 | ||
f2ca0dbe AD |
5195 | static void igb_vf_reset_event(struct igb_adapter *adapter, u32 vf) |
5196 | { | |
5197 | unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses; | |
5198 | ||
5199 | /* generate a new mac address as we were hotplug removed/added */ | |
8151d294 WM |
5200 | if (!(adapter->vf_data[vf].flags & IGB_VF_FLAG_PF_SET_MAC)) |
5201 | random_ether_addr(vf_mac); | |
f2ca0dbe AD |
5202 | |
5203 | /* process remaining reset events */ | |
5204 | igb_vf_reset(adapter, vf); | |
5205 | } | |
5206 | ||
5207 | static void igb_vf_reset_msg(struct igb_adapter *adapter, u32 vf) | |
4ae196df AD |
5208 | { |
5209 | struct e1000_hw *hw = &adapter->hw; | |
5210 | unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses; | |
ff41f8dc | 5211 | int rar_entry = hw->mac.rar_entry_count - (vf + 1); |
4ae196df AD |
5212 | u32 reg, msgbuf[3]; |
5213 | u8 *addr = (u8 *)(&msgbuf[1]); | |
5214 | ||
5215 | /* process all the same items cleared in a function level reset */ | |
f2ca0dbe | 5216 | igb_vf_reset(adapter, vf); |
4ae196df AD |
5217 | |
5218 | /* set vf mac address */ | |
26ad9178 | 5219 | igb_rar_set_qsel(adapter, vf_mac, rar_entry, vf); |
4ae196df AD |
5220 | |
5221 | /* enable transmit and receive for vf */ | |
5222 | reg = rd32(E1000_VFTE); | |
5223 | wr32(E1000_VFTE, reg | (1 << vf)); | |
5224 | reg = rd32(E1000_VFRE); | |
5225 | wr32(E1000_VFRE, reg | (1 << vf)); | |
5226 | ||
8fa7e0f7 | 5227 | adapter->vf_data[vf].flags |= IGB_VF_FLAG_CTS; |
4ae196df AD |
5228 | |
5229 | /* reply to reset with ack and vf mac address */ | |
5230 | msgbuf[0] = E1000_VF_RESET | E1000_VT_MSGTYPE_ACK; | |
5231 | memcpy(addr, vf_mac, 6); | |
5232 | igb_write_mbx(hw, msgbuf, 3, vf); | |
5233 | } | |
5234 | ||
5235 | static int igb_set_vf_mac_addr(struct igb_adapter *adapter, u32 *msg, int vf) | |
5236 | { | |
de42edde GR |
5237 | /* |
5238 | * The VF MAC Address is stored in a packed array of bytes | |
5239 | * starting at the second 32 bit word of the msg array | |
5240 | */ | |
f2ca0dbe AD |
5241 | unsigned char *addr = (char *)&msg[1]; |
5242 | int err = -1; | |
4ae196df | 5243 | |
f2ca0dbe AD |
5244 | if (is_valid_ether_addr(addr)) |
5245 | err = igb_set_vf_mac(adapter, vf, addr); | |
4ae196df | 5246 | |
f2ca0dbe | 5247 | return err; |
4ae196df AD |
5248 | } |
5249 | ||
5250 | static void igb_rcv_ack_from_vf(struct igb_adapter *adapter, u32 vf) | |
5251 | { | |
5252 | struct e1000_hw *hw = &adapter->hw; | |
f2ca0dbe | 5253 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; |
4ae196df AD |
5254 | u32 msg = E1000_VT_MSGTYPE_NACK; |
5255 | ||
5256 | /* if device isn't clear to send it shouldn't be reading either */ | |
f2ca0dbe AD |
5257 | if (!(vf_data->flags & IGB_VF_FLAG_CTS) && |
5258 | time_after(jiffies, vf_data->last_nack + (2 * HZ))) { | |
4ae196df | 5259 | igb_write_mbx(hw, &msg, 1, vf); |
f2ca0dbe | 5260 | vf_data->last_nack = jiffies; |
4ae196df AD |
5261 | } |
5262 | } | |
5263 | ||
f2ca0dbe | 5264 | static void igb_rcv_msg_from_vf(struct igb_adapter *adapter, u32 vf) |
4ae196df | 5265 | { |
f2ca0dbe AD |
5266 | struct pci_dev *pdev = adapter->pdev; |
5267 | u32 msgbuf[E1000_VFMAILBOX_SIZE]; | |
4ae196df | 5268 | struct e1000_hw *hw = &adapter->hw; |
f2ca0dbe | 5269 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; |
4ae196df AD |
5270 | s32 retval; |
5271 | ||
f2ca0dbe | 5272 | retval = igb_read_mbx(hw, msgbuf, E1000_VFMAILBOX_SIZE, vf); |
4ae196df | 5273 | |
fef45f4c AD |
5274 | if (retval) { |
5275 | /* if receive failed revoke VF CTS stats and restart init */ | |
f2ca0dbe | 5276 | dev_err(&pdev->dev, "Error receiving message from VF\n"); |
fef45f4c AD |
5277 | vf_data->flags &= ~IGB_VF_FLAG_CTS; |
5278 | if (!time_after(jiffies, vf_data->last_nack + (2 * HZ))) | |
5279 | return; | |
5280 | goto out; | |
5281 | } | |
4ae196df AD |
5282 | |
5283 | /* this is a message we already processed, do nothing */ | |
5284 | if (msgbuf[0] & (E1000_VT_MSGTYPE_ACK | E1000_VT_MSGTYPE_NACK)) | |
f2ca0dbe | 5285 | return; |
4ae196df AD |
5286 | |
5287 | /* | |
5288 | * until the vf completes a reset it should not be | |
5289 | * allowed to start any configuration. | |
5290 | */ | |
5291 | ||
5292 | if (msgbuf[0] == E1000_VF_RESET) { | |
5293 | igb_vf_reset_msg(adapter, vf); | |
f2ca0dbe | 5294 | return; |
4ae196df AD |
5295 | } |
5296 | ||
f2ca0dbe | 5297 | if (!(vf_data->flags & IGB_VF_FLAG_CTS)) { |
fef45f4c AD |
5298 | if (!time_after(jiffies, vf_data->last_nack + (2 * HZ))) |
5299 | return; | |
5300 | retval = -1; | |
5301 | goto out; | |
4ae196df AD |
5302 | } |
5303 | ||
5304 | switch ((msgbuf[0] & 0xFFFF)) { | |
5305 | case E1000_VF_SET_MAC_ADDR: | |
a6b5ea35 GR |
5306 | retval = -EINVAL; |
5307 | if (!(vf_data->flags & IGB_VF_FLAG_PF_SET_MAC)) | |
5308 | retval = igb_set_vf_mac_addr(adapter, msgbuf, vf); | |
5309 | else | |
5310 | dev_warn(&pdev->dev, | |
5311 | "VF %d attempted to override administratively " | |
5312 | "set MAC address\nReload the VF driver to " | |
5313 | "resume operations\n", vf); | |
4ae196df | 5314 | break; |
7d5753f0 AD |
5315 | case E1000_VF_SET_PROMISC: |
5316 | retval = igb_set_vf_promisc(adapter, msgbuf, vf); | |
5317 | break; | |
4ae196df AD |
5318 | case E1000_VF_SET_MULTICAST: |
5319 | retval = igb_set_vf_multicasts(adapter, msgbuf, vf); | |
5320 | break; | |
5321 | case E1000_VF_SET_LPE: | |
5322 | retval = igb_set_vf_rlpml(adapter, msgbuf[1], vf); | |
5323 | break; | |
5324 | case E1000_VF_SET_VLAN: | |
a6b5ea35 GR |
5325 | retval = -1; |
5326 | if (vf_data->pf_vlan) | |
5327 | dev_warn(&pdev->dev, | |
5328 | "VF %d attempted to override administratively " | |
5329 | "set VLAN tag\nReload the VF driver to " | |
5330 | "resume operations\n", vf); | |
8151d294 WM |
5331 | else |
5332 | retval = igb_set_vf_vlan(adapter, msgbuf, vf); | |
4ae196df AD |
5333 | break; |
5334 | default: | |
090b1795 | 5335 | dev_err(&pdev->dev, "Unhandled Msg %08x\n", msgbuf[0]); |
4ae196df AD |
5336 | retval = -1; |
5337 | break; | |
5338 | } | |
5339 | ||
fef45f4c AD |
5340 | msgbuf[0] |= E1000_VT_MSGTYPE_CTS; |
5341 | out: | |
4ae196df AD |
5342 | /* notify the VF of the results of what it sent us */ |
5343 | if (retval) | |
5344 | msgbuf[0] |= E1000_VT_MSGTYPE_NACK; | |
5345 | else | |
5346 | msgbuf[0] |= E1000_VT_MSGTYPE_ACK; | |
5347 | ||
4ae196df | 5348 | igb_write_mbx(hw, msgbuf, 1, vf); |
f2ca0dbe | 5349 | } |
4ae196df | 5350 | |
f2ca0dbe AD |
5351 | static void igb_msg_task(struct igb_adapter *adapter) |
5352 | { | |
5353 | struct e1000_hw *hw = &adapter->hw; | |
5354 | u32 vf; | |
5355 | ||
5356 | for (vf = 0; vf < adapter->vfs_allocated_count; vf++) { | |
5357 | /* process any reset requests */ | |
5358 | if (!igb_check_for_rst(hw, vf)) | |
5359 | igb_vf_reset_event(adapter, vf); | |
5360 | ||
5361 | /* process any messages pending */ | |
5362 | if (!igb_check_for_msg(hw, vf)) | |
5363 | igb_rcv_msg_from_vf(adapter, vf); | |
5364 | ||
5365 | /* process any acks */ | |
5366 | if (!igb_check_for_ack(hw, vf)) | |
5367 | igb_rcv_ack_from_vf(adapter, vf); | |
5368 | } | |
4ae196df AD |
5369 | } |
5370 | ||
68d480c4 AD |
5371 | /** |
5372 | * igb_set_uta - Set unicast filter table address | |
5373 | * @adapter: board private structure | |
5374 | * | |
5375 | * The unicast table address is a register array of 32-bit registers. | |
5376 | * The table is meant to be used in a way similar to how the MTA is used | |
5377 | * however due to certain limitations in the hardware it is necessary to | |
25985edc LDM |
5378 | * set all the hash bits to 1 and use the VMOLR ROPE bit as a promiscuous |
5379 | * enable bit to allow vlan tag stripping when promiscuous mode is enabled | |
68d480c4 AD |
5380 | **/ |
5381 | static void igb_set_uta(struct igb_adapter *adapter) | |
5382 | { | |
5383 | struct e1000_hw *hw = &adapter->hw; | |
5384 | int i; | |
5385 | ||
5386 | /* The UTA table only exists on 82576 hardware and newer */ | |
5387 | if (hw->mac.type < e1000_82576) | |
5388 | return; | |
5389 | ||
5390 | /* we only need to do this if VMDq is enabled */ | |
5391 | if (!adapter->vfs_allocated_count) | |
5392 | return; | |
5393 | ||
5394 | for (i = 0; i < hw->mac.uta_reg_count; i++) | |
5395 | array_wr32(E1000_UTA, i, ~0); | |
5396 | } | |
5397 | ||
9d5c8243 AK |
5398 | /** |
5399 | * igb_intr_msi - Interrupt Handler | |
5400 | * @irq: interrupt number | |
5401 | * @data: pointer to a network interface device structure | |
5402 | **/ | |
5403 | static irqreturn_t igb_intr_msi(int irq, void *data) | |
5404 | { | |
047e0030 AD |
5405 | struct igb_adapter *adapter = data; |
5406 | struct igb_q_vector *q_vector = adapter->q_vector[0]; | |
9d5c8243 AK |
5407 | struct e1000_hw *hw = &adapter->hw; |
5408 | /* read ICR disables interrupts using IAM */ | |
5409 | u32 icr = rd32(E1000_ICR); | |
5410 | ||
047e0030 | 5411 | igb_write_itr(q_vector); |
9d5c8243 | 5412 | |
7f081d40 AD |
5413 | if (icr & E1000_ICR_DRSTA) |
5414 | schedule_work(&adapter->reset_task); | |
5415 | ||
047e0030 | 5416 | if (icr & E1000_ICR_DOUTSYNC) { |
dda0e083 AD |
5417 | /* HW is reporting DMA is out of sync */ |
5418 | adapter->stats.doosync++; | |
5419 | } | |
5420 | ||
9d5c8243 AK |
5421 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
5422 | hw->mac.get_link_status = 1; | |
5423 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
5424 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
5425 | } | |
5426 | ||
047e0030 | 5427 | napi_schedule(&q_vector->napi); |
9d5c8243 AK |
5428 | |
5429 | return IRQ_HANDLED; | |
5430 | } | |
5431 | ||
5432 | /** | |
4a3c6433 | 5433 | * igb_intr - Legacy Interrupt Handler |
9d5c8243 AK |
5434 | * @irq: interrupt number |
5435 | * @data: pointer to a network interface device structure | |
5436 | **/ | |
5437 | static irqreturn_t igb_intr(int irq, void *data) | |
5438 | { | |
047e0030 AD |
5439 | struct igb_adapter *adapter = data; |
5440 | struct igb_q_vector *q_vector = adapter->q_vector[0]; | |
9d5c8243 AK |
5441 | struct e1000_hw *hw = &adapter->hw; |
5442 | /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No | |
5443 | * need for the IMC write */ | |
5444 | u32 icr = rd32(E1000_ICR); | |
9d5c8243 AK |
5445 | if (!icr) |
5446 | return IRQ_NONE; /* Not our interrupt */ | |
5447 | ||
047e0030 | 5448 | igb_write_itr(q_vector); |
9d5c8243 AK |
5449 | |
5450 | /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is | |
5451 | * not set, then the adapter didn't send an interrupt */ | |
5452 | if (!(icr & E1000_ICR_INT_ASSERTED)) | |
5453 | return IRQ_NONE; | |
5454 | ||
7f081d40 AD |
5455 | if (icr & E1000_ICR_DRSTA) |
5456 | schedule_work(&adapter->reset_task); | |
5457 | ||
047e0030 | 5458 | if (icr & E1000_ICR_DOUTSYNC) { |
dda0e083 AD |
5459 | /* HW is reporting DMA is out of sync */ |
5460 | adapter->stats.doosync++; | |
5461 | } | |
5462 | ||
9d5c8243 AK |
5463 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
5464 | hw->mac.get_link_status = 1; | |
5465 | /* guard against interrupt when we're going down */ | |
5466 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
5467 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
5468 | } | |
5469 | ||
047e0030 | 5470 | napi_schedule(&q_vector->napi); |
9d5c8243 AK |
5471 | |
5472 | return IRQ_HANDLED; | |
5473 | } | |
5474 | ||
047e0030 | 5475 | static inline void igb_ring_irq_enable(struct igb_q_vector *q_vector) |
9d5c8243 | 5476 | { |
047e0030 | 5477 | struct igb_adapter *adapter = q_vector->adapter; |
46544258 | 5478 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 | 5479 | |
4fc82adf AD |
5480 | if ((q_vector->rx_ring && (adapter->rx_itr_setting & 3)) || |
5481 | (!q_vector->rx_ring && (adapter->tx_itr_setting & 3))) { | |
047e0030 | 5482 | if (!adapter->msix_entries) |
6eb5a7f1 | 5483 | igb_set_itr(adapter); |
46544258 | 5484 | else |
047e0030 | 5485 | igb_update_ring_itr(q_vector); |
9d5c8243 AK |
5486 | } |
5487 | ||
46544258 AD |
5488 | if (!test_bit(__IGB_DOWN, &adapter->state)) { |
5489 | if (adapter->msix_entries) | |
047e0030 | 5490 | wr32(E1000_EIMS, q_vector->eims_value); |
46544258 AD |
5491 | else |
5492 | igb_irq_enable(adapter); | |
5493 | } | |
9d5c8243 AK |
5494 | } |
5495 | ||
46544258 AD |
5496 | /** |
5497 | * igb_poll - NAPI Rx polling callback | |
5498 | * @napi: napi polling structure | |
5499 | * @budget: count of how many packets we should handle | |
5500 | **/ | |
5501 | static int igb_poll(struct napi_struct *napi, int budget) | |
9d5c8243 | 5502 | { |
047e0030 AD |
5503 | struct igb_q_vector *q_vector = container_of(napi, |
5504 | struct igb_q_vector, | |
5505 | napi); | |
5506 | int tx_clean_complete = 1, work_done = 0; | |
9d5c8243 | 5507 | |
421e02f0 | 5508 | #ifdef CONFIG_IGB_DCA |
047e0030 AD |
5509 | if (q_vector->adapter->flags & IGB_FLAG_DCA_ENABLED) |
5510 | igb_update_dca(q_vector); | |
fe4506b6 | 5511 | #endif |
047e0030 AD |
5512 | if (q_vector->tx_ring) |
5513 | tx_clean_complete = igb_clean_tx_irq(q_vector); | |
9d5c8243 | 5514 | |
047e0030 AD |
5515 | if (q_vector->rx_ring) |
5516 | igb_clean_rx_irq_adv(q_vector, &work_done, budget); | |
5517 | ||
5518 | if (!tx_clean_complete) | |
5519 | work_done = budget; | |
46544258 | 5520 | |
9d5c8243 | 5521 | /* If not enough Rx work done, exit the polling mode */ |
5e6d5b17 | 5522 | if (work_done < budget) { |
288379f0 | 5523 | napi_complete(napi); |
047e0030 | 5524 | igb_ring_irq_enable(q_vector); |
9d5c8243 AK |
5525 | } |
5526 | ||
46544258 | 5527 | return work_done; |
9d5c8243 | 5528 | } |
6d8126f9 | 5529 | |
33af6bcc | 5530 | /** |
c5b9bd5e | 5531 | * igb_systim_to_hwtstamp - convert system time value to hw timestamp |
33af6bcc | 5532 | * @adapter: board private structure |
c5b9bd5e AD |
5533 | * @shhwtstamps: timestamp structure to update |
5534 | * @regval: unsigned 64bit system time value. | |
5535 | * | |
5536 | * We need to convert the system time value stored in the RX/TXSTMP registers | |
5537 | * into a hwtstamp which can be used by the upper level timestamping functions | |
5538 | */ | |
5539 | static void igb_systim_to_hwtstamp(struct igb_adapter *adapter, | |
5540 | struct skb_shared_hwtstamps *shhwtstamps, | |
5541 | u64 regval) | |
5542 | { | |
5543 | u64 ns; | |
5544 | ||
55cac248 AD |
5545 | /* |
5546 | * The 82580 starts with 1ns at bit 0 in RX/TXSTMPL, shift this up to | |
5547 | * 24 to match clock shift we setup earlier. | |
5548 | */ | |
5549 | if (adapter->hw.mac.type == e1000_82580) | |
5550 | regval <<= IGB_82580_TSYNC_SHIFT; | |
5551 | ||
c5b9bd5e AD |
5552 | ns = timecounter_cyc2time(&adapter->clock, regval); |
5553 | timecompare_update(&adapter->compare, ns); | |
5554 | memset(shhwtstamps, 0, sizeof(struct skb_shared_hwtstamps)); | |
5555 | shhwtstamps->hwtstamp = ns_to_ktime(ns); | |
5556 | shhwtstamps->syststamp = timecompare_transform(&adapter->compare, ns); | |
5557 | } | |
5558 | ||
5559 | /** | |
5560 | * igb_tx_hwtstamp - utility function which checks for TX time stamp | |
5561 | * @q_vector: pointer to q_vector containing needed info | |
2873957d | 5562 | * @buffer: pointer to igb_buffer structure |
33af6bcc PO |
5563 | * |
5564 | * If we were asked to do hardware stamping and such a time stamp is | |
5565 | * available, then it must have been for this skb here because we only | |
5566 | * allow only one such packet into the queue. | |
5567 | */ | |
2873957d | 5568 | static void igb_tx_hwtstamp(struct igb_q_vector *q_vector, struct igb_buffer *buffer_info) |
33af6bcc | 5569 | { |
c5b9bd5e | 5570 | struct igb_adapter *adapter = q_vector->adapter; |
33af6bcc | 5571 | struct e1000_hw *hw = &adapter->hw; |
c5b9bd5e AD |
5572 | struct skb_shared_hwtstamps shhwtstamps; |
5573 | u64 regval; | |
33af6bcc | 5574 | |
c5b9bd5e | 5575 | /* if skb does not support hw timestamp or TX stamp not valid exit */ |
2244d07b | 5576 | if (likely(!(buffer_info->tx_flags & SKBTX_HW_TSTAMP)) || |
c5b9bd5e AD |
5577 | !(rd32(E1000_TSYNCTXCTL) & E1000_TSYNCTXCTL_VALID)) |
5578 | return; | |
5579 | ||
5580 | regval = rd32(E1000_TXSTMPL); | |
5581 | regval |= (u64)rd32(E1000_TXSTMPH) << 32; | |
5582 | ||
5583 | igb_systim_to_hwtstamp(adapter, &shhwtstamps, regval); | |
2873957d | 5584 | skb_tstamp_tx(buffer_info->skb, &shhwtstamps); |
33af6bcc PO |
5585 | } |
5586 | ||
9d5c8243 AK |
5587 | /** |
5588 | * igb_clean_tx_irq - Reclaim resources after transmit completes | |
047e0030 | 5589 | * @q_vector: pointer to q_vector containing needed info |
9d5c8243 AK |
5590 | * returns true if ring is completely cleaned |
5591 | **/ | |
047e0030 | 5592 | static bool igb_clean_tx_irq(struct igb_q_vector *q_vector) |
9d5c8243 | 5593 | { |
047e0030 AD |
5594 | struct igb_adapter *adapter = q_vector->adapter; |
5595 | struct igb_ring *tx_ring = q_vector->tx_ring; | |
e694e964 | 5596 | struct net_device *netdev = tx_ring->netdev; |
0e014cb1 | 5597 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 | 5598 | struct igb_buffer *buffer_info; |
0e014cb1 | 5599 | union e1000_adv_tx_desc *tx_desc, *eop_desc; |
9d5c8243 | 5600 | unsigned int total_bytes = 0, total_packets = 0; |
0e014cb1 AD |
5601 | unsigned int i, eop, count = 0; |
5602 | bool cleaned = false; | |
9d5c8243 | 5603 | |
9d5c8243 | 5604 | i = tx_ring->next_to_clean; |
0e014cb1 AD |
5605 | eop = tx_ring->buffer_info[i].next_to_watch; |
5606 | eop_desc = E1000_TX_DESC_ADV(*tx_ring, eop); | |
5607 | ||
5608 | while ((eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD)) && | |
5609 | (count < tx_ring->count)) { | |
2d0bb1c1 | 5610 | rmb(); /* read buffer_info after eop_desc status */ |
0e014cb1 AD |
5611 | for (cleaned = false; !cleaned; count++) { |
5612 | tx_desc = E1000_TX_DESC_ADV(*tx_ring, i); | |
9d5c8243 | 5613 | buffer_info = &tx_ring->buffer_info[i]; |
0e014cb1 | 5614 | cleaned = (i == eop); |
9d5c8243 | 5615 | |
2873957d NN |
5616 | if (buffer_info->skb) { |
5617 | total_bytes += buffer_info->bytecount; | |
9d5c8243 | 5618 | /* gso_segs is currently only valid for tcp */ |
2873957d NN |
5619 | total_packets += buffer_info->gso_segs; |
5620 | igb_tx_hwtstamp(q_vector, buffer_info); | |
9d5c8243 AK |
5621 | } |
5622 | ||
80785298 | 5623 | igb_unmap_and_free_tx_resource(tx_ring, buffer_info); |
0e014cb1 | 5624 | tx_desc->wb.status = 0; |
9d5c8243 AK |
5625 | |
5626 | i++; | |
5627 | if (i == tx_ring->count) | |
5628 | i = 0; | |
9d5c8243 | 5629 | } |
0e014cb1 AD |
5630 | eop = tx_ring->buffer_info[i].next_to_watch; |
5631 | eop_desc = E1000_TX_DESC_ADV(*tx_ring, eop); | |
5632 | } | |
5633 | ||
9d5c8243 AK |
5634 | tx_ring->next_to_clean = i; |
5635 | ||
fc7d345d | 5636 | if (unlikely(count && |
9d5c8243 | 5637 | netif_carrier_ok(netdev) && |
c493ea45 | 5638 | igb_desc_unused(tx_ring) >= IGB_TX_QUEUE_WAKE)) { |
9d5c8243 AK |
5639 | /* Make sure that anybody stopping the queue after this |
5640 | * sees the new next_to_clean. | |
5641 | */ | |
5642 | smp_mb(); | |
661086df PWJ |
5643 | if (__netif_subqueue_stopped(netdev, tx_ring->queue_index) && |
5644 | !(test_bit(__IGB_DOWN, &adapter->state))) { | |
5645 | netif_wake_subqueue(netdev, tx_ring->queue_index); | |
12dcd86b ED |
5646 | |
5647 | u64_stats_update_begin(&tx_ring->tx_syncp); | |
04a5fcaa | 5648 | tx_ring->tx_stats.restart_queue++; |
12dcd86b | 5649 | u64_stats_update_end(&tx_ring->tx_syncp); |
661086df | 5650 | } |
9d5c8243 AK |
5651 | } |
5652 | ||
5653 | if (tx_ring->detect_tx_hung) { | |
5654 | /* Detect a transmit hang in hardware, this serializes the | |
5655 | * check with the clearing of time_stamp and movement of i */ | |
5656 | tx_ring->detect_tx_hung = false; | |
5657 | if (tx_ring->buffer_info[i].time_stamp && | |
5658 | time_after(jiffies, tx_ring->buffer_info[i].time_stamp + | |
8e95a202 JP |
5659 | (adapter->tx_timeout_factor * HZ)) && |
5660 | !(rd32(E1000_STATUS) & E1000_STATUS_TXOFF)) { | |
9d5c8243 | 5661 | |
9d5c8243 | 5662 | /* detected Tx unit hang */ |
59d71989 | 5663 | dev_err(tx_ring->dev, |
9d5c8243 | 5664 | "Detected Tx Unit Hang\n" |
2d064c06 | 5665 | " Tx Queue <%d>\n" |
9d5c8243 AK |
5666 | " TDH <%x>\n" |
5667 | " TDT <%x>\n" | |
5668 | " next_to_use <%x>\n" | |
5669 | " next_to_clean <%x>\n" | |
9d5c8243 AK |
5670 | "buffer_info[next_to_clean]\n" |
5671 | " time_stamp <%lx>\n" | |
0e014cb1 | 5672 | " next_to_watch <%x>\n" |
9d5c8243 AK |
5673 | " jiffies <%lx>\n" |
5674 | " desc.status <%x>\n", | |
2d064c06 | 5675 | tx_ring->queue_index, |
fce99e34 AD |
5676 | readl(tx_ring->head), |
5677 | readl(tx_ring->tail), | |
9d5c8243 AK |
5678 | tx_ring->next_to_use, |
5679 | tx_ring->next_to_clean, | |
f7ba205e | 5680 | tx_ring->buffer_info[eop].time_stamp, |
0e014cb1 | 5681 | eop, |
9d5c8243 | 5682 | jiffies, |
0e014cb1 | 5683 | eop_desc->wb.status); |
661086df | 5684 | netif_stop_subqueue(netdev, tx_ring->queue_index); |
9d5c8243 AK |
5685 | } |
5686 | } | |
5687 | tx_ring->total_bytes += total_bytes; | |
5688 | tx_ring->total_packets += total_packets; | |
12dcd86b | 5689 | u64_stats_update_begin(&tx_ring->tx_syncp); |
e21ed353 AD |
5690 | tx_ring->tx_stats.bytes += total_bytes; |
5691 | tx_ring->tx_stats.packets += total_packets; | |
12dcd86b | 5692 | u64_stats_update_end(&tx_ring->tx_syncp); |
807540ba | 5693 | return count < tx_ring->count; |
9d5c8243 AK |
5694 | } |
5695 | ||
9d5c8243 AK |
5696 | /** |
5697 | * igb_receive_skb - helper function to handle rx indications | |
047e0030 AD |
5698 | * @q_vector: structure containing interrupt and ring information |
5699 | * @skb: packet to send up | |
5700 | * @vlan_tag: vlan tag for packet | |
9d5c8243 | 5701 | **/ |
047e0030 AD |
5702 | static void igb_receive_skb(struct igb_q_vector *q_vector, |
5703 | struct sk_buff *skb, | |
5704 | u16 vlan_tag) | |
5705 | { | |
5706 | struct igb_adapter *adapter = q_vector->adapter; | |
5707 | ||
31b24b95 | 5708 | if (vlan_tag && adapter->vlgrp) |
047e0030 AD |
5709 | vlan_gro_receive(&q_vector->napi, adapter->vlgrp, |
5710 | vlan_tag, skb); | |
182ff8df | 5711 | else |
047e0030 | 5712 | napi_gro_receive(&q_vector->napi, skb); |
9d5c8243 AK |
5713 | } |
5714 | ||
04a5fcaa | 5715 | static inline void igb_rx_checksum_adv(struct igb_ring *ring, |
9d5c8243 AK |
5716 | u32 status_err, struct sk_buff *skb) |
5717 | { | |
bc8acf2c | 5718 | skb_checksum_none_assert(skb); |
9d5c8243 AK |
5719 | |
5720 | /* Ignore Checksum bit is set or checksum is disabled through ethtool */ | |
85ad76b2 AD |
5721 | if (!(ring->flags & IGB_RING_FLAG_RX_CSUM) || |
5722 | (status_err & E1000_RXD_STAT_IXSM)) | |
9d5c8243 | 5723 | return; |
85ad76b2 | 5724 | |
9d5c8243 AK |
5725 | /* TCP/UDP checksum error bit is set */ |
5726 | if (status_err & | |
5727 | (E1000_RXDEXT_STATERR_TCPE | E1000_RXDEXT_STATERR_IPE)) { | |
b9473560 JB |
5728 | /* |
5729 | * work around errata with sctp packets where the TCPE aka | |
5730 | * L4E bit is set incorrectly on 64 byte (60 byte w/o crc) | |
5731 | * packets, (aka let the stack check the crc32c) | |
5732 | */ | |
85ad76b2 | 5733 | if ((skb->len == 60) && |
12dcd86b ED |
5734 | (ring->flags & IGB_RING_FLAG_RX_SCTP_CSUM)) { |
5735 | u64_stats_update_begin(&ring->rx_syncp); | |
04a5fcaa | 5736 | ring->rx_stats.csum_err++; |
12dcd86b ED |
5737 | u64_stats_update_end(&ring->rx_syncp); |
5738 | } | |
9d5c8243 | 5739 | /* let the stack verify checksum errors */ |
9d5c8243 AK |
5740 | return; |
5741 | } | |
5742 | /* It must be a TCP or UDP packet with a valid checksum */ | |
5743 | if (status_err & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)) | |
5744 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
5745 | ||
59d71989 | 5746 | dev_dbg(ring->dev, "cksum success: bits %08X\n", status_err); |
9d5c8243 AK |
5747 | } |
5748 | ||
757b77e2 | 5749 | static void igb_rx_hwtstamp(struct igb_q_vector *q_vector, u32 staterr, |
c5b9bd5e AD |
5750 | struct sk_buff *skb) |
5751 | { | |
5752 | struct igb_adapter *adapter = q_vector->adapter; | |
5753 | struct e1000_hw *hw = &adapter->hw; | |
5754 | u64 regval; | |
5755 | ||
5756 | /* | |
5757 | * If this bit is set, then the RX registers contain the time stamp. No | |
5758 | * other packet will be time stamped until we read these registers, so | |
5759 | * read the registers to make them available again. Because only one | |
5760 | * packet can be time stamped at a time, we know that the register | |
5761 | * values must belong to this one here and therefore we don't need to | |
5762 | * compare any of the additional attributes stored for it. | |
5763 | * | |
2244d07b | 5764 | * If nothing went wrong, then it should have a shared tx_flags that we |
c5b9bd5e AD |
5765 | * can turn into a skb_shared_hwtstamps. |
5766 | */ | |
757b77e2 NN |
5767 | if (staterr & E1000_RXDADV_STAT_TSIP) { |
5768 | u32 *stamp = (u32 *)skb->data; | |
5769 | regval = le32_to_cpu(*(stamp + 2)); | |
5770 | regval |= (u64)le32_to_cpu(*(stamp + 3)) << 32; | |
5771 | skb_pull(skb, IGB_TS_HDR_LEN); | |
5772 | } else { | |
5773 | if(!(rd32(E1000_TSYNCRXCTL) & E1000_TSYNCRXCTL_VALID)) | |
5774 | return; | |
c5b9bd5e | 5775 | |
757b77e2 NN |
5776 | regval = rd32(E1000_RXSTMPL); |
5777 | regval |= (u64)rd32(E1000_RXSTMPH) << 32; | |
5778 | } | |
c5b9bd5e AD |
5779 | |
5780 | igb_systim_to_hwtstamp(adapter, skb_hwtstamps(skb), regval); | |
5781 | } | |
4c844851 | 5782 | static inline u16 igb_get_hlen(struct igb_ring *rx_ring, |
2d94d8ab AD |
5783 | union e1000_adv_rx_desc *rx_desc) |
5784 | { | |
5785 | /* HW will not DMA in data larger than the given buffer, even if it | |
5786 | * parses the (NFS, of course) header to be larger. In that case, it | |
5787 | * fills the header buffer and spills the rest into the page. | |
5788 | */ | |
5789 | u16 hlen = (le16_to_cpu(rx_desc->wb.lower.lo_dword.hdr_info) & | |
5790 | E1000_RXDADV_HDRBUFLEN_MASK) >> E1000_RXDADV_HDRBUFLEN_SHIFT; | |
4c844851 AD |
5791 | if (hlen > rx_ring->rx_buffer_len) |
5792 | hlen = rx_ring->rx_buffer_len; | |
2d94d8ab AD |
5793 | return hlen; |
5794 | } | |
5795 | ||
047e0030 AD |
5796 | static bool igb_clean_rx_irq_adv(struct igb_q_vector *q_vector, |
5797 | int *work_done, int budget) | |
9d5c8243 | 5798 | { |
047e0030 | 5799 | struct igb_ring *rx_ring = q_vector->rx_ring; |
e694e964 | 5800 | struct net_device *netdev = rx_ring->netdev; |
59d71989 | 5801 | struct device *dev = rx_ring->dev; |
9d5c8243 AK |
5802 | union e1000_adv_rx_desc *rx_desc , *next_rxd; |
5803 | struct igb_buffer *buffer_info , *next_buffer; | |
5804 | struct sk_buff *skb; | |
9d5c8243 AK |
5805 | bool cleaned = false; |
5806 | int cleaned_count = 0; | |
d1eff350 | 5807 | int current_node = numa_node_id(); |
9d5c8243 | 5808 | unsigned int total_bytes = 0, total_packets = 0; |
73cd78f1 | 5809 | unsigned int i; |
2d94d8ab AD |
5810 | u32 staterr; |
5811 | u16 length; | |
047e0030 | 5812 | u16 vlan_tag; |
9d5c8243 AK |
5813 | |
5814 | i = rx_ring->next_to_clean; | |
69d3ca53 | 5815 | buffer_info = &rx_ring->buffer_info[i]; |
9d5c8243 AK |
5816 | rx_desc = E1000_RX_DESC_ADV(*rx_ring, i); |
5817 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
5818 | ||
5819 | while (staterr & E1000_RXD_STAT_DD) { | |
5820 | if (*work_done >= budget) | |
5821 | break; | |
5822 | (*work_done)++; | |
2d0bb1c1 | 5823 | rmb(); /* read descriptor and rx_buffer_info after status DD */ |
9d5c8243 | 5824 | |
69d3ca53 AD |
5825 | skb = buffer_info->skb; |
5826 | prefetch(skb->data - NET_IP_ALIGN); | |
5827 | buffer_info->skb = NULL; | |
5828 | ||
5829 | i++; | |
5830 | if (i == rx_ring->count) | |
5831 | i = 0; | |
42d0781a | 5832 | |
69d3ca53 AD |
5833 | next_rxd = E1000_RX_DESC_ADV(*rx_ring, i); |
5834 | prefetch(next_rxd); | |
5835 | next_buffer = &rx_ring->buffer_info[i]; | |
9d5c8243 AK |
5836 | |
5837 | length = le16_to_cpu(rx_desc->wb.upper.length); | |
5838 | cleaned = true; | |
5839 | cleaned_count++; | |
5840 | ||
2d94d8ab | 5841 | if (buffer_info->dma) { |
59d71989 | 5842 | dma_unmap_single(dev, buffer_info->dma, |
4c844851 | 5843 | rx_ring->rx_buffer_len, |
59d71989 | 5844 | DMA_FROM_DEVICE); |
91615f76 | 5845 | buffer_info->dma = 0; |
4c844851 | 5846 | if (rx_ring->rx_buffer_len >= IGB_RXBUFFER_1024) { |
6ec43fe6 AD |
5847 | skb_put(skb, length); |
5848 | goto send_up; | |
5849 | } | |
4c844851 | 5850 | skb_put(skb, igb_get_hlen(rx_ring, rx_desc)); |
bf36c1a0 AD |
5851 | } |
5852 | ||
5853 | if (length) { | |
59d71989 AD |
5854 | dma_unmap_page(dev, buffer_info->page_dma, |
5855 | PAGE_SIZE / 2, DMA_FROM_DEVICE); | |
9d5c8243 | 5856 | buffer_info->page_dma = 0; |
bf36c1a0 | 5857 | |
aa913403 | 5858 | skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, |
bf36c1a0 AD |
5859 | buffer_info->page, |
5860 | buffer_info->page_offset, | |
5861 | length); | |
5862 | ||
d1eff350 AD |
5863 | if ((page_count(buffer_info->page) != 1) || |
5864 | (page_to_nid(buffer_info->page) != current_node)) | |
bf36c1a0 AD |
5865 | buffer_info->page = NULL; |
5866 | else | |
5867 | get_page(buffer_info->page); | |
9d5c8243 AK |
5868 | |
5869 | skb->len += length; | |
5870 | skb->data_len += length; | |
bf36c1a0 | 5871 | skb->truesize += length; |
9d5c8243 | 5872 | } |
9d5c8243 | 5873 | |
bf36c1a0 | 5874 | if (!(staterr & E1000_RXD_STAT_EOP)) { |
b2d56536 AD |
5875 | buffer_info->skb = next_buffer->skb; |
5876 | buffer_info->dma = next_buffer->dma; | |
5877 | next_buffer->skb = skb; | |
5878 | next_buffer->dma = 0; | |
bf36c1a0 AD |
5879 | goto next_desc; |
5880 | } | |
69d3ca53 | 5881 | send_up: |
9d5c8243 AK |
5882 | if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { |
5883 | dev_kfree_skb_irq(skb); | |
5884 | goto next_desc; | |
5885 | } | |
9d5c8243 | 5886 | |
757b77e2 NN |
5887 | if (staterr & (E1000_RXDADV_STAT_TSIP | E1000_RXDADV_STAT_TS)) |
5888 | igb_rx_hwtstamp(q_vector, staterr, skb); | |
9d5c8243 AK |
5889 | total_bytes += skb->len; |
5890 | total_packets++; | |
5891 | ||
85ad76b2 | 5892 | igb_rx_checksum_adv(rx_ring, staterr, skb); |
9d5c8243 AK |
5893 | |
5894 | skb->protocol = eth_type_trans(skb, netdev); | |
047e0030 AD |
5895 | skb_record_rx_queue(skb, rx_ring->queue_index); |
5896 | ||
5897 | vlan_tag = ((staterr & E1000_RXD_STAT_VP) ? | |
5898 | le16_to_cpu(rx_desc->wb.upper.vlan) : 0); | |
9d5c8243 | 5899 | |
047e0030 | 5900 | igb_receive_skb(q_vector, skb, vlan_tag); |
9d5c8243 | 5901 | |
9d5c8243 AK |
5902 | next_desc: |
5903 | rx_desc->wb.upper.status_error = 0; | |
5904 | ||
5905 | /* return some buffers to hardware, one at a time is too slow */ | |
5906 | if (cleaned_count >= IGB_RX_BUFFER_WRITE) { | |
3b644cf6 | 5907 | igb_alloc_rx_buffers_adv(rx_ring, cleaned_count); |
9d5c8243 AK |
5908 | cleaned_count = 0; |
5909 | } | |
5910 | ||
5911 | /* use prefetched values */ | |
5912 | rx_desc = next_rxd; | |
5913 | buffer_info = next_buffer; | |
9d5c8243 AK |
5914 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); |
5915 | } | |
bf36c1a0 | 5916 | |
9d5c8243 | 5917 | rx_ring->next_to_clean = i; |
c493ea45 | 5918 | cleaned_count = igb_desc_unused(rx_ring); |
9d5c8243 AK |
5919 | |
5920 | if (cleaned_count) | |
3b644cf6 | 5921 | igb_alloc_rx_buffers_adv(rx_ring, cleaned_count); |
9d5c8243 AK |
5922 | |
5923 | rx_ring->total_packets += total_packets; | |
5924 | rx_ring->total_bytes += total_bytes; | |
12dcd86b | 5925 | u64_stats_update_begin(&rx_ring->rx_syncp); |
9d5c8243 AK |
5926 | rx_ring->rx_stats.packets += total_packets; |
5927 | rx_ring->rx_stats.bytes += total_bytes; | |
12dcd86b | 5928 | u64_stats_update_end(&rx_ring->rx_syncp); |
9d5c8243 AK |
5929 | return cleaned; |
5930 | } | |
5931 | ||
9d5c8243 AK |
5932 | /** |
5933 | * igb_alloc_rx_buffers_adv - Replace used receive buffers; packet split | |
5934 | * @adapter: address of board private structure | |
5935 | **/ | |
d7ee5b3a | 5936 | void igb_alloc_rx_buffers_adv(struct igb_ring *rx_ring, int cleaned_count) |
9d5c8243 | 5937 | { |
e694e964 | 5938 | struct net_device *netdev = rx_ring->netdev; |
9d5c8243 AK |
5939 | union e1000_adv_rx_desc *rx_desc; |
5940 | struct igb_buffer *buffer_info; | |
5941 | struct sk_buff *skb; | |
5942 | unsigned int i; | |
db761762 | 5943 | int bufsz; |
9d5c8243 AK |
5944 | |
5945 | i = rx_ring->next_to_use; | |
5946 | buffer_info = &rx_ring->buffer_info[i]; | |
5947 | ||
4c844851 | 5948 | bufsz = rx_ring->rx_buffer_len; |
db761762 | 5949 | |
9d5c8243 AK |
5950 | while (cleaned_count--) { |
5951 | rx_desc = E1000_RX_DESC_ADV(*rx_ring, i); | |
5952 | ||
6ec43fe6 | 5953 | if ((bufsz < IGB_RXBUFFER_1024) && !buffer_info->page_dma) { |
9d5c8243 | 5954 | if (!buffer_info->page) { |
42d0781a | 5955 | buffer_info->page = netdev_alloc_page(netdev); |
12dcd86b ED |
5956 | if (unlikely(!buffer_info->page)) { |
5957 | u64_stats_update_begin(&rx_ring->rx_syncp); | |
04a5fcaa | 5958 | rx_ring->rx_stats.alloc_failed++; |
12dcd86b | 5959 | u64_stats_update_end(&rx_ring->rx_syncp); |
bf36c1a0 AD |
5960 | goto no_buffers; |
5961 | } | |
5962 | buffer_info->page_offset = 0; | |
5963 | } else { | |
5964 | buffer_info->page_offset ^= PAGE_SIZE / 2; | |
9d5c8243 AK |
5965 | } |
5966 | buffer_info->page_dma = | |
59d71989 | 5967 | dma_map_page(rx_ring->dev, buffer_info->page, |
bf36c1a0 AD |
5968 | buffer_info->page_offset, |
5969 | PAGE_SIZE / 2, | |
59d71989 AD |
5970 | DMA_FROM_DEVICE); |
5971 | if (dma_mapping_error(rx_ring->dev, | |
5972 | buffer_info->page_dma)) { | |
42d0781a | 5973 | buffer_info->page_dma = 0; |
12dcd86b | 5974 | u64_stats_update_begin(&rx_ring->rx_syncp); |
42d0781a | 5975 | rx_ring->rx_stats.alloc_failed++; |
12dcd86b | 5976 | u64_stats_update_end(&rx_ring->rx_syncp); |
42d0781a AD |
5977 | goto no_buffers; |
5978 | } | |
9d5c8243 AK |
5979 | } |
5980 | ||
42d0781a AD |
5981 | skb = buffer_info->skb; |
5982 | if (!skb) { | |
89d71a66 | 5983 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
12dcd86b ED |
5984 | if (unlikely(!skb)) { |
5985 | u64_stats_update_begin(&rx_ring->rx_syncp); | |
04a5fcaa | 5986 | rx_ring->rx_stats.alloc_failed++; |
12dcd86b | 5987 | u64_stats_update_end(&rx_ring->rx_syncp); |
9d5c8243 AK |
5988 | goto no_buffers; |
5989 | } | |
5990 | ||
9d5c8243 | 5991 | buffer_info->skb = skb; |
42d0781a AD |
5992 | } |
5993 | if (!buffer_info->dma) { | |
59d71989 | 5994 | buffer_info->dma = dma_map_single(rx_ring->dev, |
80785298 | 5995 | skb->data, |
9d5c8243 | 5996 | bufsz, |
59d71989 AD |
5997 | DMA_FROM_DEVICE); |
5998 | if (dma_mapping_error(rx_ring->dev, | |
5999 | buffer_info->dma)) { | |
42d0781a | 6000 | buffer_info->dma = 0; |
12dcd86b | 6001 | u64_stats_update_begin(&rx_ring->rx_syncp); |
42d0781a | 6002 | rx_ring->rx_stats.alloc_failed++; |
12dcd86b | 6003 | u64_stats_update_end(&rx_ring->rx_syncp); |
42d0781a AD |
6004 | goto no_buffers; |
6005 | } | |
9d5c8243 AK |
6006 | } |
6007 | /* Refresh the desc even if buffer_addrs didn't change because | |
6008 | * each write-back erases this info. */ | |
6ec43fe6 | 6009 | if (bufsz < IGB_RXBUFFER_1024) { |
9d5c8243 AK |
6010 | rx_desc->read.pkt_addr = |
6011 | cpu_to_le64(buffer_info->page_dma); | |
6012 | rx_desc->read.hdr_addr = cpu_to_le64(buffer_info->dma); | |
6013 | } else { | |
42d0781a | 6014 | rx_desc->read.pkt_addr = cpu_to_le64(buffer_info->dma); |
9d5c8243 AK |
6015 | rx_desc->read.hdr_addr = 0; |
6016 | } | |
6017 | ||
6018 | i++; | |
6019 | if (i == rx_ring->count) | |
6020 | i = 0; | |
6021 | buffer_info = &rx_ring->buffer_info[i]; | |
6022 | } | |
6023 | ||
6024 | no_buffers: | |
6025 | if (rx_ring->next_to_use != i) { | |
6026 | rx_ring->next_to_use = i; | |
6027 | if (i == 0) | |
6028 | i = (rx_ring->count - 1); | |
6029 | else | |
6030 | i--; | |
6031 | ||
6032 | /* Force memory writes to complete before letting h/w | |
6033 | * know there are new descriptors to fetch. (Only | |
6034 | * applicable for weak-ordered memory model archs, | |
6035 | * such as IA-64). */ | |
6036 | wmb(); | |
fce99e34 | 6037 | writel(i, rx_ring->tail); |
9d5c8243 AK |
6038 | } |
6039 | } | |
6040 | ||
6041 | /** | |
6042 | * igb_mii_ioctl - | |
6043 | * @netdev: | |
6044 | * @ifreq: | |
6045 | * @cmd: | |
6046 | **/ | |
6047 | static int igb_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
6048 | { | |
6049 | struct igb_adapter *adapter = netdev_priv(netdev); | |
6050 | struct mii_ioctl_data *data = if_mii(ifr); | |
6051 | ||
6052 | if (adapter->hw.phy.media_type != e1000_media_type_copper) | |
6053 | return -EOPNOTSUPP; | |
6054 | ||
6055 | switch (cmd) { | |
6056 | case SIOCGMIIPHY: | |
6057 | data->phy_id = adapter->hw.phy.addr; | |
6058 | break; | |
6059 | case SIOCGMIIREG: | |
f5f4cf08 AD |
6060 | if (igb_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
6061 | &data->val_out)) | |
9d5c8243 AK |
6062 | return -EIO; |
6063 | break; | |
6064 | case SIOCSMIIREG: | |
6065 | default: | |
6066 | return -EOPNOTSUPP; | |
6067 | } | |
6068 | return 0; | |
6069 | } | |
6070 | ||
c6cb090b PO |
6071 | /** |
6072 | * igb_hwtstamp_ioctl - control hardware time stamping | |
6073 | * @netdev: | |
6074 | * @ifreq: | |
6075 | * @cmd: | |
6076 | * | |
33af6bcc PO |
6077 | * Outgoing time stamping can be enabled and disabled. Play nice and |
6078 | * disable it when requested, although it shouldn't case any overhead | |
6079 | * when no packet needs it. At most one packet in the queue may be | |
6080 | * marked for time stamping, otherwise it would be impossible to tell | |
6081 | * for sure to which packet the hardware time stamp belongs. | |
6082 | * | |
6083 | * Incoming time stamping has to be configured via the hardware | |
6084 | * filters. Not all combinations are supported, in particular event | |
6085 | * type has to be specified. Matching the kind of event packet is | |
6086 | * not supported, with the exception of "all V2 events regardless of | |
6087 | * level 2 or 4". | |
6088 | * | |
c6cb090b PO |
6089 | **/ |
6090 | static int igb_hwtstamp_ioctl(struct net_device *netdev, | |
6091 | struct ifreq *ifr, int cmd) | |
6092 | { | |
33af6bcc PO |
6093 | struct igb_adapter *adapter = netdev_priv(netdev); |
6094 | struct e1000_hw *hw = &adapter->hw; | |
c6cb090b | 6095 | struct hwtstamp_config config; |
c5b9bd5e AD |
6096 | u32 tsync_tx_ctl = E1000_TSYNCTXCTL_ENABLED; |
6097 | u32 tsync_rx_ctl = E1000_TSYNCRXCTL_ENABLED; | |
33af6bcc | 6098 | u32 tsync_rx_cfg = 0; |
c5b9bd5e AD |
6099 | bool is_l4 = false; |
6100 | bool is_l2 = false; | |
33af6bcc | 6101 | u32 regval; |
c6cb090b PO |
6102 | |
6103 | if (copy_from_user(&config, ifr->ifr_data, sizeof(config))) | |
6104 | return -EFAULT; | |
6105 | ||
6106 | /* reserved for future extensions */ | |
6107 | if (config.flags) | |
6108 | return -EINVAL; | |
6109 | ||
33af6bcc PO |
6110 | switch (config.tx_type) { |
6111 | case HWTSTAMP_TX_OFF: | |
c5b9bd5e | 6112 | tsync_tx_ctl = 0; |
33af6bcc | 6113 | case HWTSTAMP_TX_ON: |
33af6bcc PO |
6114 | break; |
6115 | default: | |
6116 | return -ERANGE; | |
6117 | } | |
6118 | ||
6119 | switch (config.rx_filter) { | |
6120 | case HWTSTAMP_FILTER_NONE: | |
c5b9bd5e | 6121 | tsync_rx_ctl = 0; |
33af6bcc PO |
6122 | break; |
6123 | case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: | |
6124 | case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: | |
6125 | case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: | |
6126 | case HWTSTAMP_FILTER_ALL: | |
6127 | /* | |
6128 | * register TSYNCRXCFG must be set, therefore it is not | |
6129 | * possible to time stamp both Sync and Delay_Req messages | |
6130 | * => fall back to time stamping all packets | |
6131 | */ | |
c5b9bd5e | 6132 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_ALL; |
33af6bcc PO |
6133 | config.rx_filter = HWTSTAMP_FILTER_ALL; |
6134 | break; | |
6135 | case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: | |
c5b9bd5e | 6136 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L4_V1; |
33af6bcc | 6137 | tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V1_SYNC_MESSAGE; |
c5b9bd5e | 6138 | is_l4 = true; |
33af6bcc PO |
6139 | break; |
6140 | case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: | |
c5b9bd5e | 6141 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L4_V1; |
33af6bcc | 6142 | tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V1_DELAY_REQ_MESSAGE; |
c5b9bd5e | 6143 | is_l4 = true; |
33af6bcc PO |
6144 | break; |
6145 | case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: | |
6146 | case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: | |
c5b9bd5e | 6147 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_L4_V2; |
33af6bcc | 6148 | tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V2_SYNC_MESSAGE; |
c5b9bd5e AD |
6149 | is_l2 = true; |
6150 | is_l4 = true; | |
33af6bcc PO |
6151 | config.rx_filter = HWTSTAMP_FILTER_SOME; |
6152 | break; | |
6153 | case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: | |
6154 | case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: | |
c5b9bd5e | 6155 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_L2_L4_V2; |
33af6bcc | 6156 | tsync_rx_cfg = E1000_TSYNCRXCFG_PTP_V2_DELAY_REQ_MESSAGE; |
c5b9bd5e AD |
6157 | is_l2 = true; |
6158 | is_l4 = true; | |
33af6bcc PO |
6159 | config.rx_filter = HWTSTAMP_FILTER_SOME; |
6160 | break; | |
6161 | case HWTSTAMP_FILTER_PTP_V2_EVENT: | |
6162 | case HWTSTAMP_FILTER_PTP_V2_SYNC: | |
6163 | case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: | |
c5b9bd5e | 6164 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_EVENT_V2; |
33af6bcc | 6165 | config.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT; |
c5b9bd5e | 6166 | is_l2 = true; |
33af6bcc PO |
6167 | break; |
6168 | default: | |
6169 | return -ERANGE; | |
6170 | } | |
6171 | ||
c5b9bd5e AD |
6172 | if (hw->mac.type == e1000_82575) { |
6173 | if (tsync_rx_ctl | tsync_tx_ctl) | |
6174 | return -EINVAL; | |
6175 | return 0; | |
6176 | } | |
6177 | ||
757b77e2 NN |
6178 | /* |
6179 | * Per-packet timestamping only works if all packets are | |
6180 | * timestamped, so enable timestamping in all packets as | |
6181 | * long as one rx filter was configured. | |
6182 | */ | |
6183 | if ((hw->mac.type == e1000_82580) && tsync_rx_ctl) { | |
6184 | tsync_rx_ctl = E1000_TSYNCRXCTL_ENABLED; | |
6185 | tsync_rx_ctl |= E1000_TSYNCRXCTL_TYPE_ALL; | |
6186 | } | |
6187 | ||
33af6bcc PO |
6188 | /* enable/disable TX */ |
6189 | regval = rd32(E1000_TSYNCTXCTL); | |
c5b9bd5e AD |
6190 | regval &= ~E1000_TSYNCTXCTL_ENABLED; |
6191 | regval |= tsync_tx_ctl; | |
33af6bcc PO |
6192 | wr32(E1000_TSYNCTXCTL, regval); |
6193 | ||
c5b9bd5e | 6194 | /* enable/disable RX */ |
33af6bcc | 6195 | regval = rd32(E1000_TSYNCRXCTL); |
c5b9bd5e AD |
6196 | regval &= ~(E1000_TSYNCRXCTL_ENABLED | E1000_TSYNCRXCTL_TYPE_MASK); |
6197 | regval |= tsync_rx_ctl; | |
33af6bcc | 6198 | wr32(E1000_TSYNCRXCTL, regval); |
33af6bcc | 6199 | |
c5b9bd5e AD |
6200 | /* define which PTP packets are time stamped */ |
6201 | wr32(E1000_TSYNCRXCFG, tsync_rx_cfg); | |
33af6bcc | 6202 | |
c5b9bd5e AD |
6203 | /* define ethertype filter for timestamped packets */ |
6204 | if (is_l2) | |
6205 | wr32(E1000_ETQF(3), | |
6206 | (E1000_ETQF_FILTER_ENABLE | /* enable filter */ | |
6207 | E1000_ETQF_1588 | /* enable timestamping */ | |
6208 | ETH_P_1588)); /* 1588 eth protocol type */ | |
6209 | else | |
6210 | wr32(E1000_ETQF(3), 0); | |
6211 | ||
6212 | #define PTP_PORT 319 | |
6213 | /* L4 Queue Filter[3]: filter by destination port and protocol */ | |
6214 | if (is_l4) { | |
6215 | u32 ftqf = (IPPROTO_UDP /* UDP */ | |
6216 | | E1000_FTQF_VF_BP /* VF not compared */ | |
6217 | | E1000_FTQF_1588_TIME_STAMP /* Enable Timestamping */ | |
6218 | | E1000_FTQF_MASK); /* mask all inputs */ | |
6219 | ftqf &= ~E1000_FTQF_MASK_PROTO_BP; /* enable protocol check */ | |
6220 | ||
6221 | wr32(E1000_IMIR(3), htons(PTP_PORT)); | |
6222 | wr32(E1000_IMIREXT(3), | |
6223 | (E1000_IMIREXT_SIZE_BP | E1000_IMIREXT_CTRL_BP)); | |
6224 | if (hw->mac.type == e1000_82576) { | |
6225 | /* enable source port check */ | |
6226 | wr32(E1000_SPQF(3), htons(PTP_PORT)); | |
6227 | ftqf &= ~E1000_FTQF_MASK_SOURCE_PORT_BP; | |
6228 | } | |
6229 | wr32(E1000_FTQF(3), ftqf); | |
6230 | } else { | |
6231 | wr32(E1000_FTQF(3), E1000_FTQF_MASK); | |
6232 | } | |
33af6bcc PO |
6233 | wrfl(); |
6234 | ||
6235 | adapter->hwtstamp_config = config; | |
6236 | ||
6237 | /* clear TX/RX time stamp registers, just to be sure */ | |
6238 | regval = rd32(E1000_TXSTMPH); | |
6239 | regval = rd32(E1000_RXSTMPH); | |
c6cb090b | 6240 | |
33af6bcc PO |
6241 | return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ? |
6242 | -EFAULT : 0; | |
c6cb090b PO |
6243 | } |
6244 | ||
9d5c8243 AK |
6245 | /** |
6246 | * igb_ioctl - | |
6247 | * @netdev: | |
6248 | * @ifreq: | |
6249 | * @cmd: | |
6250 | **/ | |
6251 | static int igb_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
6252 | { | |
6253 | switch (cmd) { | |
6254 | case SIOCGMIIPHY: | |
6255 | case SIOCGMIIREG: | |
6256 | case SIOCSMIIREG: | |
6257 | return igb_mii_ioctl(netdev, ifr, cmd); | |
c6cb090b PO |
6258 | case SIOCSHWTSTAMP: |
6259 | return igb_hwtstamp_ioctl(netdev, ifr, cmd); | |
9d5c8243 AK |
6260 | default: |
6261 | return -EOPNOTSUPP; | |
6262 | } | |
6263 | } | |
6264 | ||
009bc06e AD |
6265 | s32 igb_read_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value) |
6266 | { | |
6267 | struct igb_adapter *adapter = hw->back; | |
6268 | u16 cap_offset; | |
6269 | ||
6270 | cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP); | |
6271 | if (!cap_offset) | |
6272 | return -E1000_ERR_CONFIG; | |
6273 | ||
6274 | pci_read_config_word(adapter->pdev, cap_offset + reg, value); | |
6275 | ||
6276 | return 0; | |
6277 | } | |
6278 | ||
6279 | s32 igb_write_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value) | |
6280 | { | |
6281 | struct igb_adapter *adapter = hw->back; | |
6282 | u16 cap_offset; | |
6283 | ||
6284 | cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP); | |
6285 | if (!cap_offset) | |
6286 | return -E1000_ERR_CONFIG; | |
6287 | ||
6288 | pci_write_config_word(adapter->pdev, cap_offset + reg, *value); | |
6289 | ||
6290 | return 0; | |
6291 | } | |
6292 | ||
9d5c8243 AK |
6293 | static void igb_vlan_rx_register(struct net_device *netdev, |
6294 | struct vlan_group *grp) | |
6295 | { | |
6296 | struct igb_adapter *adapter = netdev_priv(netdev); | |
6297 | struct e1000_hw *hw = &adapter->hw; | |
6298 | u32 ctrl, rctl; | |
6299 | ||
6300 | igb_irq_disable(adapter); | |
6301 | adapter->vlgrp = grp; | |
6302 | ||
6303 | if (grp) { | |
6304 | /* enable VLAN tag insert/strip */ | |
6305 | ctrl = rd32(E1000_CTRL); | |
6306 | ctrl |= E1000_CTRL_VME; | |
6307 | wr32(E1000_CTRL, ctrl); | |
6308 | ||
51466239 | 6309 | /* Disable CFI check */ |
9d5c8243 | 6310 | rctl = rd32(E1000_RCTL); |
9d5c8243 AK |
6311 | rctl &= ~E1000_RCTL_CFIEN; |
6312 | wr32(E1000_RCTL, rctl); | |
9d5c8243 AK |
6313 | } else { |
6314 | /* disable VLAN tag insert/strip */ | |
6315 | ctrl = rd32(E1000_CTRL); | |
6316 | ctrl &= ~E1000_CTRL_VME; | |
6317 | wr32(E1000_CTRL, ctrl); | |
9d5c8243 AK |
6318 | } |
6319 | ||
e1739522 AD |
6320 | igb_rlpml_set(adapter); |
6321 | ||
9d5c8243 AK |
6322 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
6323 | igb_irq_enable(adapter); | |
6324 | } | |
6325 | ||
6326 | static void igb_vlan_rx_add_vid(struct net_device *netdev, u16 vid) | |
6327 | { | |
6328 | struct igb_adapter *adapter = netdev_priv(netdev); | |
6329 | struct e1000_hw *hw = &adapter->hw; | |
4ae196df | 6330 | int pf_id = adapter->vfs_allocated_count; |
9d5c8243 | 6331 | |
51466239 AD |
6332 | /* attempt to add filter to vlvf array */ |
6333 | igb_vlvf_set(adapter, vid, true, pf_id); | |
4ae196df | 6334 | |
51466239 AD |
6335 | /* add the filter since PF can receive vlans w/o entry in vlvf */ |
6336 | igb_vfta_set(hw, vid, true); | |
9d5c8243 AK |
6337 | } |
6338 | ||
6339 | static void igb_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) | |
6340 | { | |
6341 | struct igb_adapter *adapter = netdev_priv(netdev); | |
6342 | struct e1000_hw *hw = &adapter->hw; | |
4ae196df | 6343 | int pf_id = adapter->vfs_allocated_count; |
51466239 | 6344 | s32 err; |
9d5c8243 AK |
6345 | |
6346 | igb_irq_disable(adapter); | |
6347 | vlan_group_set_device(adapter->vlgrp, vid, NULL); | |
6348 | ||
6349 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
6350 | igb_irq_enable(adapter); | |
6351 | ||
51466239 AD |
6352 | /* remove vlan from VLVF table array */ |
6353 | err = igb_vlvf_set(adapter, vid, false, pf_id); | |
9d5c8243 | 6354 | |
51466239 AD |
6355 | /* if vid was not present in VLVF just remove it from table */ |
6356 | if (err) | |
4ae196df | 6357 | igb_vfta_set(hw, vid, false); |
9d5c8243 AK |
6358 | } |
6359 | ||
6360 | static void igb_restore_vlan(struct igb_adapter *adapter) | |
6361 | { | |
6362 | igb_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
6363 | ||
6364 | if (adapter->vlgrp) { | |
6365 | u16 vid; | |
b738127d | 6366 | for (vid = 0; vid < VLAN_N_VID; vid++) { |
9d5c8243 AK |
6367 | if (!vlan_group_get_device(adapter->vlgrp, vid)) |
6368 | continue; | |
6369 | igb_vlan_rx_add_vid(adapter->netdev, vid); | |
6370 | } | |
6371 | } | |
6372 | } | |
6373 | ||
14ad2513 | 6374 | int igb_set_spd_dplx(struct igb_adapter *adapter, u32 spd, u8 dplx) |
9d5c8243 | 6375 | { |
090b1795 | 6376 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
6377 | struct e1000_mac_info *mac = &adapter->hw.mac; |
6378 | ||
6379 | mac->autoneg = 0; | |
6380 | ||
14ad2513 DD |
6381 | /* Make sure dplx is at most 1 bit and lsb of speed is not set |
6382 | * for the switch() below to work */ | |
6383 | if ((spd & 1) || (dplx & ~1)) | |
6384 | goto err_inval; | |
6385 | ||
cd2638a8 CW |
6386 | /* Fiber NIC's only allow 1000 Gbps Full duplex */ |
6387 | if ((adapter->hw.phy.media_type == e1000_media_type_internal_serdes) && | |
14ad2513 DD |
6388 | spd != SPEED_1000 && |
6389 | dplx != DUPLEX_FULL) | |
6390 | goto err_inval; | |
cd2638a8 | 6391 | |
14ad2513 | 6392 | switch (spd + dplx) { |
9d5c8243 AK |
6393 | case SPEED_10 + DUPLEX_HALF: |
6394 | mac->forced_speed_duplex = ADVERTISE_10_HALF; | |
6395 | break; | |
6396 | case SPEED_10 + DUPLEX_FULL: | |
6397 | mac->forced_speed_duplex = ADVERTISE_10_FULL; | |
6398 | break; | |
6399 | case SPEED_100 + DUPLEX_HALF: | |
6400 | mac->forced_speed_duplex = ADVERTISE_100_HALF; | |
6401 | break; | |
6402 | case SPEED_100 + DUPLEX_FULL: | |
6403 | mac->forced_speed_duplex = ADVERTISE_100_FULL; | |
6404 | break; | |
6405 | case SPEED_1000 + DUPLEX_FULL: | |
6406 | mac->autoneg = 1; | |
6407 | adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL; | |
6408 | break; | |
6409 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ | |
6410 | default: | |
14ad2513 | 6411 | goto err_inval; |
9d5c8243 AK |
6412 | } |
6413 | return 0; | |
14ad2513 DD |
6414 | |
6415 | err_inval: | |
6416 | dev_err(&pdev->dev, "Unsupported Speed/Duplex configuration\n"); | |
6417 | return -EINVAL; | |
9d5c8243 AK |
6418 | } |
6419 | ||
3fe7c4c9 | 6420 | static int __igb_shutdown(struct pci_dev *pdev, bool *enable_wake) |
9d5c8243 AK |
6421 | { |
6422 | struct net_device *netdev = pci_get_drvdata(pdev); | |
6423 | struct igb_adapter *adapter = netdev_priv(netdev); | |
6424 | struct e1000_hw *hw = &adapter->hw; | |
2d064c06 | 6425 | u32 ctrl, rctl, status; |
9d5c8243 AK |
6426 | u32 wufc = adapter->wol; |
6427 | #ifdef CONFIG_PM | |
6428 | int retval = 0; | |
6429 | #endif | |
6430 | ||
6431 | netif_device_detach(netdev); | |
6432 | ||
a88f10ec AD |
6433 | if (netif_running(netdev)) |
6434 | igb_close(netdev); | |
6435 | ||
047e0030 | 6436 | igb_clear_interrupt_scheme(adapter); |
9d5c8243 AK |
6437 | |
6438 | #ifdef CONFIG_PM | |
6439 | retval = pci_save_state(pdev); | |
6440 | if (retval) | |
6441 | return retval; | |
6442 | #endif | |
6443 | ||
6444 | status = rd32(E1000_STATUS); | |
6445 | if (status & E1000_STATUS_LU) | |
6446 | wufc &= ~E1000_WUFC_LNKC; | |
6447 | ||
6448 | if (wufc) { | |
6449 | igb_setup_rctl(adapter); | |
ff41f8dc | 6450 | igb_set_rx_mode(netdev); |
9d5c8243 AK |
6451 | |
6452 | /* turn on all-multi mode if wake on multicast is enabled */ | |
6453 | if (wufc & E1000_WUFC_MC) { | |
6454 | rctl = rd32(E1000_RCTL); | |
6455 | rctl |= E1000_RCTL_MPE; | |
6456 | wr32(E1000_RCTL, rctl); | |
6457 | } | |
6458 | ||
6459 | ctrl = rd32(E1000_CTRL); | |
6460 | /* advertise wake from D3Cold */ | |
6461 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
6462 | /* phy power management enable */ | |
6463 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
6464 | ctrl |= E1000_CTRL_ADVD3WUC; | |
6465 | wr32(E1000_CTRL, ctrl); | |
6466 | ||
9d5c8243 | 6467 | /* Allow time for pending master requests to run */ |
330a6d6a | 6468 | igb_disable_pcie_master(hw); |
9d5c8243 AK |
6469 | |
6470 | wr32(E1000_WUC, E1000_WUC_PME_EN); | |
6471 | wr32(E1000_WUFC, wufc); | |
9d5c8243 AK |
6472 | } else { |
6473 | wr32(E1000_WUC, 0); | |
6474 | wr32(E1000_WUFC, 0); | |
9d5c8243 AK |
6475 | } |
6476 | ||
3fe7c4c9 RW |
6477 | *enable_wake = wufc || adapter->en_mng_pt; |
6478 | if (!*enable_wake) | |
88a268c1 NN |
6479 | igb_power_down_link(adapter); |
6480 | else | |
6481 | igb_power_up_link(adapter); | |
9d5c8243 AK |
6482 | |
6483 | /* Release control of h/w to f/w. If f/w is AMT enabled, this | |
6484 | * would have already happened in close and is redundant. */ | |
6485 | igb_release_hw_control(adapter); | |
6486 | ||
6487 | pci_disable_device(pdev); | |
6488 | ||
9d5c8243 AK |
6489 | return 0; |
6490 | } | |
6491 | ||
6492 | #ifdef CONFIG_PM | |
3fe7c4c9 RW |
6493 | static int igb_suspend(struct pci_dev *pdev, pm_message_t state) |
6494 | { | |
6495 | int retval; | |
6496 | bool wake; | |
6497 | ||
6498 | retval = __igb_shutdown(pdev, &wake); | |
6499 | if (retval) | |
6500 | return retval; | |
6501 | ||
6502 | if (wake) { | |
6503 | pci_prepare_to_sleep(pdev); | |
6504 | } else { | |
6505 | pci_wake_from_d3(pdev, false); | |
6506 | pci_set_power_state(pdev, PCI_D3hot); | |
6507 | } | |
6508 | ||
6509 | return 0; | |
6510 | } | |
6511 | ||
9d5c8243 AK |
6512 | static int igb_resume(struct pci_dev *pdev) |
6513 | { | |
6514 | struct net_device *netdev = pci_get_drvdata(pdev); | |
6515 | struct igb_adapter *adapter = netdev_priv(netdev); | |
6516 | struct e1000_hw *hw = &adapter->hw; | |
6517 | u32 err; | |
6518 | ||
6519 | pci_set_power_state(pdev, PCI_D0); | |
6520 | pci_restore_state(pdev); | |
b94f2d77 | 6521 | pci_save_state(pdev); |
42bfd33a | 6522 | |
aed5dec3 | 6523 | err = pci_enable_device_mem(pdev); |
9d5c8243 AK |
6524 | if (err) { |
6525 | dev_err(&pdev->dev, | |
6526 | "igb: Cannot enable PCI device from suspend\n"); | |
6527 | return err; | |
6528 | } | |
6529 | pci_set_master(pdev); | |
6530 | ||
6531 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
6532 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
6533 | ||
047e0030 | 6534 | if (igb_init_interrupt_scheme(adapter)) { |
a88f10ec AD |
6535 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); |
6536 | return -ENOMEM; | |
9d5c8243 AK |
6537 | } |
6538 | ||
9d5c8243 | 6539 | igb_reset(adapter); |
a8564f03 AD |
6540 | |
6541 | /* let the f/w know that the h/w is now under the control of the | |
6542 | * driver. */ | |
6543 | igb_get_hw_control(adapter); | |
6544 | ||
9d5c8243 AK |
6545 | wr32(E1000_WUS, ~0); |
6546 | ||
a88f10ec AD |
6547 | if (netif_running(netdev)) { |
6548 | err = igb_open(netdev); | |
6549 | if (err) | |
6550 | return err; | |
6551 | } | |
9d5c8243 AK |
6552 | |
6553 | netif_device_attach(netdev); | |
6554 | ||
9d5c8243 AK |
6555 | return 0; |
6556 | } | |
6557 | #endif | |
6558 | ||
6559 | static void igb_shutdown(struct pci_dev *pdev) | |
6560 | { | |
3fe7c4c9 RW |
6561 | bool wake; |
6562 | ||
6563 | __igb_shutdown(pdev, &wake); | |
6564 | ||
6565 | if (system_state == SYSTEM_POWER_OFF) { | |
6566 | pci_wake_from_d3(pdev, wake); | |
6567 | pci_set_power_state(pdev, PCI_D3hot); | |
6568 | } | |
9d5c8243 AK |
6569 | } |
6570 | ||
6571 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
6572 | /* | |
6573 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
6574 | * without having to re-enable interrupts. It's not called while | |
6575 | * the interrupt routine is executing. | |
6576 | */ | |
6577 | static void igb_netpoll(struct net_device *netdev) | |
6578 | { | |
6579 | struct igb_adapter *adapter = netdev_priv(netdev); | |
eebbbdba | 6580 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 | 6581 | int i; |
9d5c8243 | 6582 | |
eebbbdba | 6583 | if (!adapter->msix_entries) { |
047e0030 | 6584 | struct igb_q_vector *q_vector = adapter->q_vector[0]; |
eebbbdba | 6585 | igb_irq_disable(adapter); |
047e0030 | 6586 | napi_schedule(&q_vector->napi); |
eebbbdba AD |
6587 | return; |
6588 | } | |
9d5c8243 | 6589 | |
047e0030 AD |
6590 | for (i = 0; i < adapter->num_q_vectors; i++) { |
6591 | struct igb_q_vector *q_vector = adapter->q_vector[i]; | |
6592 | wr32(E1000_EIMC, q_vector->eims_value); | |
6593 | napi_schedule(&q_vector->napi); | |
eebbbdba | 6594 | } |
9d5c8243 AK |
6595 | } |
6596 | #endif /* CONFIG_NET_POLL_CONTROLLER */ | |
6597 | ||
6598 | /** | |
6599 | * igb_io_error_detected - called when PCI error is detected | |
6600 | * @pdev: Pointer to PCI device | |
6601 | * @state: The current pci connection state | |
6602 | * | |
6603 | * This function is called after a PCI bus error affecting | |
6604 | * this device has been detected. | |
6605 | */ | |
6606 | static pci_ers_result_t igb_io_error_detected(struct pci_dev *pdev, | |
6607 | pci_channel_state_t state) | |
6608 | { | |
6609 | struct net_device *netdev = pci_get_drvdata(pdev); | |
6610 | struct igb_adapter *adapter = netdev_priv(netdev); | |
6611 | ||
6612 | netif_device_detach(netdev); | |
6613 | ||
59ed6eec AD |
6614 | if (state == pci_channel_io_perm_failure) |
6615 | return PCI_ERS_RESULT_DISCONNECT; | |
6616 | ||
9d5c8243 AK |
6617 | if (netif_running(netdev)) |
6618 | igb_down(adapter); | |
6619 | pci_disable_device(pdev); | |
6620 | ||
6621 | /* Request a slot slot reset. */ | |
6622 | return PCI_ERS_RESULT_NEED_RESET; | |
6623 | } | |
6624 | ||
6625 | /** | |
6626 | * igb_io_slot_reset - called after the pci bus has been reset. | |
6627 | * @pdev: Pointer to PCI device | |
6628 | * | |
6629 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
6630 | * resembles the first-half of the igb_resume routine. | |
6631 | */ | |
6632 | static pci_ers_result_t igb_io_slot_reset(struct pci_dev *pdev) | |
6633 | { | |
6634 | struct net_device *netdev = pci_get_drvdata(pdev); | |
6635 | struct igb_adapter *adapter = netdev_priv(netdev); | |
6636 | struct e1000_hw *hw = &adapter->hw; | |
40a914fa | 6637 | pci_ers_result_t result; |
42bfd33a | 6638 | int err; |
9d5c8243 | 6639 | |
aed5dec3 | 6640 | if (pci_enable_device_mem(pdev)) { |
9d5c8243 AK |
6641 | dev_err(&pdev->dev, |
6642 | "Cannot re-enable PCI device after reset.\n"); | |
40a914fa AD |
6643 | result = PCI_ERS_RESULT_DISCONNECT; |
6644 | } else { | |
6645 | pci_set_master(pdev); | |
6646 | pci_restore_state(pdev); | |
b94f2d77 | 6647 | pci_save_state(pdev); |
9d5c8243 | 6648 | |
40a914fa AD |
6649 | pci_enable_wake(pdev, PCI_D3hot, 0); |
6650 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
9d5c8243 | 6651 | |
40a914fa AD |
6652 | igb_reset(adapter); |
6653 | wr32(E1000_WUS, ~0); | |
6654 | result = PCI_ERS_RESULT_RECOVERED; | |
6655 | } | |
9d5c8243 | 6656 | |
ea943d41 JK |
6657 | err = pci_cleanup_aer_uncorrect_error_status(pdev); |
6658 | if (err) { | |
6659 | dev_err(&pdev->dev, "pci_cleanup_aer_uncorrect_error_status " | |
6660 | "failed 0x%0x\n", err); | |
6661 | /* non-fatal, continue */ | |
6662 | } | |
40a914fa AD |
6663 | |
6664 | return result; | |
9d5c8243 AK |
6665 | } |
6666 | ||
6667 | /** | |
6668 | * igb_io_resume - called when traffic can start flowing again. | |
6669 | * @pdev: Pointer to PCI device | |
6670 | * | |
6671 | * This callback is called when the error recovery driver tells us that | |
6672 | * its OK to resume normal operation. Implementation resembles the | |
6673 | * second-half of the igb_resume routine. | |
6674 | */ | |
6675 | static void igb_io_resume(struct pci_dev *pdev) | |
6676 | { | |
6677 | struct net_device *netdev = pci_get_drvdata(pdev); | |
6678 | struct igb_adapter *adapter = netdev_priv(netdev); | |
6679 | ||
9d5c8243 AK |
6680 | if (netif_running(netdev)) { |
6681 | if (igb_up(adapter)) { | |
6682 | dev_err(&pdev->dev, "igb_up failed after reset\n"); | |
6683 | return; | |
6684 | } | |
6685 | } | |
6686 | ||
6687 | netif_device_attach(netdev); | |
6688 | ||
6689 | /* let the f/w know that the h/w is now under the control of the | |
6690 | * driver. */ | |
6691 | igb_get_hw_control(adapter); | |
9d5c8243 AK |
6692 | } |
6693 | ||
26ad9178 AD |
6694 | static void igb_rar_set_qsel(struct igb_adapter *adapter, u8 *addr, u32 index, |
6695 | u8 qsel) | |
6696 | { | |
6697 | u32 rar_low, rar_high; | |
6698 | struct e1000_hw *hw = &adapter->hw; | |
6699 | ||
6700 | /* HW expects these in little endian so we reverse the byte order | |
6701 | * from network order (big endian) to little endian | |
6702 | */ | |
6703 | rar_low = ((u32) addr[0] | ((u32) addr[1] << 8) | | |
6704 | ((u32) addr[2] << 16) | ((u32) addr[3] << 24)); | |
6705 | rar_high = ((u32) addr[4] | ((u32) addr[5] << 8)); | |
6706 | ||
6707 | /* Indicate to hardware the Address is Valid. */ | |
6708 | rar_high |= E1000_RAH_AV; | |
6709 | ||
6710 | if (hw->mac.type == e1000_82575) | |
6711 | rar_high |= E1000_RAH_POOL_1 * qsel; | |
6712 | else | |
6713 | rar_high |= E1000_RAH_POOL_1 << qsel; | |
6714 | ||
6715 | wr32(E1000_RAL(index), rar_low); | |
6716 | wrfl(); | |
6717 | wr32(E1000_RAH(index), rar_high); | |
6718 | wrfl(); | |
6719 | } | |
6720 | ||
4ae196df AD |
6721 | static int igb_set_vf_mac(struct igb_adapter *adapter, |
6722 | int vf, unsigned char *mac_addr) | |
6723 | { | |
6724 | struct e1000_hw *hw = &adapter->hw; | |
ff41f8dc AD |
6725 | /* VF MAC addresses start at end of receive addresses and moves |
6726 | * torwards the first, as a result a collision should not be possible */ | |
6727 | int rar_entry = hw->mac.rar_entry_count - (vf + 1); | |
4ae196df | 6728 | |
37680117 | 6729 | memcpy(adapter->vf_data[vf].vf_mac_addresses, mac_addr, ETH_ALEN); |
4ae196df | 6730 | |
26ad9178 | 6731 | igb_rar_set_qsel(adapter, mac_addr, rar_entry, vf); |
4ae196df AD |
6732 | |
6733 | return 0; | |
6734 | } | |
6735 | ||
8151d294 WM |
6736 | static int igb_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) |
6737 | { | |
6738 | struct igb_adapter *adapter = netdev_priv(netdev); | |
6739 | if (!is_valid_ether_addr(mac) || (vf >= adapter->vfs_allocated_count)) | |
6740 | return -EINVAL; | |
6741 | adapter->vf_data[vf].flags |= IGB_VF_FLAG_PF_SET_MAC; | |
6742 | dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf); | |
6743 | dev_info(&adapter->pdev->dev, "Reload the VF driver to make this" | |
6744 | " change effective."); | |
6745 | if (test_bit(__IGB_DOWN, &adapter->state)) { | |
6746 | dev_warn(&adapter->pdev->dev, "The VF MAC address has been set," | |
6747 | " but the PF device is not up.\n"); | |
6748 | dev_warn(&adapter->pdev->dev, "Bring the PF device up before" | |
6749 | " attempting to use the VF device.\n"); | |
6750 | } | |
6751 | return igb_set_vf_mac(adapter, vf, mac); | |
6752 | } | |
6753 | ||
17dc566c LL |
6754 | static int igb_link_mbps(int internal_link_speed) |
6755 | { | |
6756 | switch (internal_link_speed) { | |
6757 | case SPEED_100: | |
6758 | return 100; | |
6759 | case SPEED_1000: | |
6760 | return 1000; | |
6761 | default: | |
6762 | return 0; | |
6763 | } | |
6764 | } | |
6765 | ||
6766 | static void igb_set_vf_rate_limit(struct e1000_hw *hw, int vf, int tx_rate, | |
6767 | int link_speed) | |
6768 | { | |
6769 | int rf_dec, rf_int; | |
6770 | u32 bcnrc_val; | |
6771 | ||
6772 | if (tx_rate != 0) { | |
6773 | /* Calculate the rate factor values to set */ | |
6774 | rf_int = link_speed / tx_rate; | |
6775 | rf_dec = (link_speed - (rf_int * tx_rate)); | |
6776 | rf_dec = (rf_dec * (1<<E1000_RTTBCNRC_RF_INT_SHIFT)) / tx_rate; | |
6777 | ||
6778 | bcnrc_val = E1000_RTTBCNRC_RS_ENA; | |
6779 | bcnrc_val |= ((rf_int<<E1000_RTTBCNRC_RF_INT_SHIFT) & | |
6780 | E1000_RTTBCNRC_RF_INT_MASK); | |
6781 | bcnrc_val |= (rf_dec & E1000_RTTBCNRC_RF_DEC_MASK); | |
6782 | } else { | |
6783 | bcnrc_val = 0; | |
6784 | } | |
6785 | ||
6786 | wr32(E1000_RTTDQSEL, vf); /* vf X uses queue X */ | |
6787 | wr32(E1000_RTTBCNRC, bcnrc_val); | |
6788 | } | |
6789 | ||
6790 | static void igb_check_vf_rate_limit(struct igb_adapter *adapter) | |
6791 | { | |
6792 | int actual_link_speed, i; | |
6793 | bool reset_rate = false; | |
6794 | ||
6795 | /* VF TX rate limit was not set or not supported */ | |
6796 | if ((adapter->vf_rate_link_speed == 0) || | |
6797 | (adapter->hw.mac.type != e1000_82576)) | |
6798 | return; | |
6799 | ||
6800 | actual_link_speed = igb_link_mbps(adapter->link_speed); | |
6801 | if (actual_link_speed != adapter->vf_rate_link_speed) { | |
6802 | reset_rate = true; | |
6803 | adapter->vf_rate_link_speed = 0; | |
6804 | dev_info(&adapter->pdev->dev, | |
6805 | "Link speed has been changed. VF Transmit " | |
6806 | "rate is disabled\n"); | |
6807 | } | |
6808 | ||
6809 | for (i = 0; i < adapter->vfs_allocated_count; i++) { | |
6810 | if (reset_rate) | |
6811 | adapter->vf_data[i].tx_rate = 0; | |
6812 | ||
6813 | igb_set_vf_rate_limit(&adapter->hw, i, | |
6814 | adapter->vf_data[i].tx_rate, | |
6815 | actual_link_speed); | |
6816 | } | |
6817 | } | |
6818 | ||
8151d294 WM |
6819 | static int igb_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate) |
6820 | { | |
17dc566c LL |
6821 | struct igb_adapter *adapter = netdev_priv(netdev); |
6822 | struct e1000_hw *hw = &adapter->hw; | |
6823 | int actual_link_speed; | |
6824 | ||
6825 | if (hw->mac.type != e1000_82576) | |
6826 | return -EOPNOTSUPP; | |
6827 | ||
6828 | actual_link_speed = igb_link_mbps(adapter->link_speed); | |
6829 | if ((vf >= adapter->vfs_allocated_count) || | |
6830 | (!(rd32(E1000_STATUS) & E1000_STATUS_LU)) || | |
6831 | (tx_rate < 0) || (tx_rate > actual_link_speed)) | |
6832 | return -EINVAL; | |
6833 | ||
6834 | adapter->vf_rate_link_speed = actual_link_speed; | |
6835 | adapter->vf_data[vf].tx_rate = (u16)tx_rate; | |
6836 | igb_set_vf_rate_limit(hw, vf, tx_rate, actual_link_speed); | |
6837 | ||
6838 | return 0; | |
8151d294 WM |
6839 | } |
6840 | ||
6841 | static int igb_ndo_get_vf_config(struct net_device *netdev, | |
6842 | int vf, struct ifla_vf_info *ivi) | |
6843 | { | |
6844 | struct igb_adapter *adapter = netdev_priv(netdev); | |
6845 | if (vf >= adapter->vfs_allocated_count) | |
6846 | return -EINVAL; | |
6847 | ivi->vf = vf; | |
6848 | memcpy(&ivi->mac, adapter->vf_data[vf].vf_mac_addresses, ETH_ALEN); | |
17dc566c | 6849 | ivi->tx_rate = adapter->vf_data[vf].tx_rate; |
8151d294 WM |
6850 | ivi->vlan = adapter->vf_data[vf].pf_vlan; |
6851 | ivi->qos = adapter->vf_data[vf].pf_qos; | |
6852 | return 0; | |
6853 | } | |
6854 | ||
4ae196df AD |
6855 | static void igb_vmm_control(struct igb_adapter *adapter) |
6856 | { | |
6857 | struct e1000_hw *hw = &adapter->hw; | |
10d8e907 | 6858 | u32 reg; |
4ae196df | 6859 | |
52a1dd4d AD |
6860 | switch (hw->mac.type) { |
6861 | case e1000_82575: | |
6862 | default: | |
6863 | /* replication is not supported for 82575 */ | |
4ae196df | 6864 | return; |
52a1dd4d AD |
6865 | case e1000_82576: |
6866 | /* notify HW that the MAC is adding vlan tags */ | |
6867 | reg = rd32(E1000_DTXCTL); | |
6868 | reg |= E1000_DTXCTL_VLAN_ADDED; | |
6869 | wr32(E1000_DTXCTL, reg); | |
6870 | case e1000_82580: | |
6871 | /* enable replication vlan tag stripping */ | |
6872 | reg = rd32(E1000_RPLOLR); | |
6873 | reg |= E1000_RPLOLR_STRVLAN; | |
6874 | wr32(E1000_RPLOLR, reg); | |
d2ba2ed8 AD |
6875 | case e1000_i350: |
6876 | /* none of the above registers are supported by i350 */ | |
52a1dd4d AD |
6877 | break; |
6878 | } | |
10d8e907 | 6879 | |
d4960307 AD |
6880 | if (adapter->vfs_allocated_count) { |
6881 | igb_vmdq_set_loopback_pf(hw, true); | |
6882 | igb_vmdq_set_replication_pf(hw, true); | |
13800469 GR |
6883 | igb_vmdq_set_anti_spoofing_pf(hw, true, |
6884 | adapter->vfs_allocated_count); | |
d4960307 AD |
6885 | } else { |
6886 | igb_vmdq_set_loopback_pf(hw, false); | |
6887 | igb_vmdq_set_replication_pf(hw, false); | |
6888 | } | |
4ae196df AD |
6889 | } |
6890 | ||
9d5c8243 | 6891 | /* igb_main.c */ |