]>
Commit | Line | Data |
---|---|---|
e52c0f96 CW |
1 | /* Intel(R) Gigabit Ethernet Linux driver |
2 | * Copyright(c) 2007-2014 Intel Corporation. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms and conditions of the GNU General Public License, | |
6 | * version 2, as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, see <http://www.gnu.org/licenses/>. | |
15 | * | |
16 | * The full GNU General Public License is included in this distribution in | |
17 | * the file called "COPYING". | |
18 | * | |
19 | * Contact Information: | |
20 | * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> | |
21 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
22 | */ | |
9d5c8243 | 23 | |
876d2d6f JK |
24 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
25 | ||
9d5c8243 AK |
26 | #include <linux/module.h> |
27 | #include <linux/types.h> | |
28 | #include <linux/init.h> | |
b2cb09b1 | 29 | #include <linux/bitops.h> |
9d5c8243 AK |
30 | #include <linux/vmalloc.h> |
31 | #include <linux/pagemap.h> | |
32 | #include <linux/netdevice.h> | |
9d5c8243 | 33 | #include <linux/ipv6.h> |
5a0e3ad6 | 34 | #include <linux/slab.h> |
9d5c8243 AK |
35 | #include <net/checksum.h> |
36 | #include <net/ip6_checksum.h> | |
c6cb090b | 37 | #include <linux/net_tstamp.h> |
9d5c8243 AK |
38 | #include <linux/mii.h> |
39 | #include <linux/ethtool.h> | |
01789349 | 40 | #include <linux/if.h> |
9d5c8243 AK |
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> | |
7d13a7d0 AD |
46 | #include <linux/ip.h> |
47 | #include <linux/tcp.h> | |
48 | #include <linux/sctp.h> | |
9d5c8243 | 49 | #include <linux/if_ether.h> |
40a914fa | 50 | #include <linux/aer.h> |
70c71606 | 51 | #include <linux/prefetch.h> |
749ab2cd | 52 | #include <linux/pm_runtime.h> |
421e02f0 | 53 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
54 | #include <linux/dca.h> |
55 | #endif | |
441fc6fd | 56 | #include <linux/i2c.h> |
9d5c8243 AK |
57 | #include "igb.h" |
58 | ||
67b1b903 CW |
59 | #define MAJ 5 |
60 | #define MIN 0 | |
66f40b8a | 61 | #define BUILD 5 |
0d1fe82d | 62 | #define DRV_VERSION __stringify(MAJ) "." __stringify(MIN) "." \ |
929dd047 | 63 | __stringify(BUILD) "-k" |
9d5c8243 AK |
64 | char igb_driver_name[] = "igb"; |
65 | char igb_driver_version[] = DRV_VERSION; | |
66 | static const char igb_driver_string[] = | |
67 | "Intel(R) Gigabit Ethernet Network Driver"; | |
4b9ea462 | 68 | static const char igb_copyright[] = |
74cfb2e1 | 69 | "Copyright (c) 2007-2014 Intel Corporation."; |
9d5c8243 | 70 | |
9d5c8243 AK |
71 | static const struct e1000_info *igb_info_tbl[] = { |
72 | [board_82575] = &e1000_82575_info, | |
73 | }; | |
74 | ||
cd1631ce | 75 | static const struct pci_device_id igb_pci_tbl[] = { |
ceb5f13b CW |
76 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_I354_BACKPLANE_1GBPS) }, |
77 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_I354_SGMII) }, | |
78 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_I354_BACKPLANE_2_5GBPS) }, | |
f96a8a0b CW |
79 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_I211_COPPER), board_82575 }, |
80 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_I210_COPPER), board_82575 }, | |
81 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_I210_FIBER), board_82575 }, | |
82 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_I210_SERDES), board_82575 }, | |
83 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_I210_SGMII), board_82575 }, | |
53b87ce3 CW |
84 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_I210_COPPER_FLASHLESS), board_82575 }, |
85 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_I210_SERDES_FLASHLESS), board_82575 }, | |
d2ba2ed8 AD |
86 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_COPPER), board_82575 }, |
87 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_FIBER), board_82575 }, | |
88 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_SERDES), board_82575 }, | |
89 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_SGMII), board_82575 }, | |
55cac248 AD |
90 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_COPPER), board_82575 }, |
91 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_FIBER), board_82575 }, | |
6493d24f | 92 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_QUAD_FIBER), board_82575 }, |
55cac248 AD |
93 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_SERDES), board_82575 }, |
94 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_SGMII), board_82575 }, | |
95 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82580_COPPER_DUAL), board_82575 }, | |
308fb39a JG |
96 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_DH89XXCC_SGMII), board_82575 }, |
97 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_DH89XXCC_SERDES), board_82575 }, | |
1b5dda33 GJ |
98 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_DH89XXCC_BACKPLANE), board_82575 }, |
99 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_DH89XXCC_SFP), board_82575 }, | |
2d064c06 | 100 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576), board_82575 }, |
9eb2341d | 101 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_NS), board_82575 }, |
747d49ba | 102 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_NS_SERDES), board_82575 }, |
2d064c06 AD |
103 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_FIBER), board_82575 }, |
104 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_SERDES), board_82575 }, | |
4703bf73 | 105 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_SERDES_QUAD), board_82575 }, |
b894fa26 | 106 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_QUAD_COPPER_ET2), board_82575 }, |
c8ea5ea9 | 107 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_QUAD_COPPER), board_82575 }, |
9d5c8243 AK |
108 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_COPPER), board_82575 }, |
109 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575EB_FIBER_SERDES), board_82575 }, | |
110 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82575GB_QUAD_COPPER), board_82575 }, | |
111 | /* required last entry */ | |
112 | {0, } | |
113 | }; | |
114 | ||
115 | MODULE_DEVICE_TABLE(pci, igb_pci_tbl); | |
116 | ||
9d5c8243 AK |
117 | static int igb_setup_all_tx_resources(struct igb_adapter *); |
118 | static int igb_setup_all_rx_resources(struct igb_adapter *); | |
119 | static void igb_free_all_tx_resources(struct igb_adapter *); | |
120 | static void igb_free_all_rx_resources(struct igb_adapter *); | |
06cf2666 | 121 | static void igb_setup_mrqc(struct igb_adapter *); |
9d5c8243 | 122 | static int igb_probe(struct pci_dev *, const struct pci_device_id *); |
9f9a12f8 | 123 | static void igb_remove(struct pci_dev *pdev); |
9d5c8243 AK |
124 | static int igb_sw_init(struct igb_adapter *); |
125 | static int igb_open(struct net_device *); | |
126 | static int igb_close(struct net_device *); | |
53c7d064 | 127 | static void igb_configure(struct igb_adapter *); |
9d5c8243 AK |
128 | static void igb_configure_tx(struct igb_adapter *); |
129 | static void igb_configure_rx(struct igb_adapter *); | |
9d5c8243 AK |
130 | static void igb_clean_all_tx_rings(struct igb_adapter *); |
131 | static void igb_clean_all_rx_rings(struct igb_adapter *); | |
3b644cf6 MW |
132 | static void igb_clean_tx_ring(struct igb_ring *); |
133 | static void igb_clean_rx_ring(struct igb_ring *); | |
ff41f8dc | 134 | static void igb_set_rx_mode(struct net_device *); |
9d5c8243 AK |
135 | static void igb_update_phy_info(unsigned long); |
136 | static void igb_watchdog(unsigned long); | |
137 | static void igb_watchdog_task(struct work_struct *); | |
cd392f5c | 138 | static netdev_tx_t igb_xmit_frame(struct sk_buff *skb, struct net_device *); |
12dcd86b | 139 | static struct rtnl_link_stats64 *igb_get_stats64(struct net_device *dev, |
c502ea2e | 140 | struct rtnl_link_stats64 *stats); |
9d5c8243 AK |
141 | static int igb_change_mtu(struct net_device *, int); |
142 | static int igb_set_mac(struct net_device *, void *); | |
68d480c4 | 143 | static void igb_set_uta(struct igb_adapter *adapter); |
9d5c8243 AK |
144 | static irqreturn_t igb_intr(int irq, void *); |
145 | static irqreturn_t igb_intr_msi(int irq, void *); | |
146 | static irqreturn_t igb_msix_other(int irq, void *); | |
047e0030 | 147 | static irqreturn_t igb_msix_ring(int irq, void *); |
421e02f0 | 148 | #ifdef CONFIG_IGB_DCA |
047e0030 | 149 | static void igb_update_dca(struct igb_q_vector *); |
fe4506b6 | 150 | static void igb_setup_dca(struct igb_adapter *); |
421e02f0 | 151 | #endif /* CONFIG_IGB_DCA */ |
661086df | 152 | static int igb_poll(struct napi_struct *, int); |
13fde97a | 153 | static bool igb_clean_tx_irq(struct igb_q_vector *); |
cd392f5c | 154 | static bool igb_clean_rx_irq(struct igb_q_vector *, int); |
9d5c8243 AK |
155 | static int igb_ioctl(struct net_device *, struct ifreq *, int cmd); |
156 | static void igb_tx_timeout(struct net_device *); | |
157 | static void igb_reset_task(struct work_struct *); | |
c502ea2e CW |
158 | static void igb_vlan_mode(struct net_device *netdev, |
159 | netdev_features_t features); | |
80d5c368 PM |
160 | static int igb_vlan_rx_add_vid(struct net_device *, __be16, u16); |
161 | static int igb_vlan_rx_kill_vid(struct net_device *, __be16, u16); | |
9d5c8243 | 162 | static void igb_restore_vlan(struct igb_adapter *); |
26ad9178 | 163 | static void igb_rar_set_qsel(struct igb_adapter *, u8 *, u32 , u8); |
4ae196df AD |
164 | static void igb_ping_all_vfs(struct igb_adapter *); |
165 | static void igb_msg_task(struct igb_adapter *); | |
4ae196df | 166 | static void igb_vmm_control(struct igb_adapter *); |
f2ca0dbe | 167 | static int igb_set_vf_mac(struct igb_adapter *, int, unsigned char *); |
4ae196df | 168 | static void igb_restore_vf_multicasts(struct igb_adapter *adapter); |
8151d294 WM |
169 | static int igb_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac); |
170 | static int igb_ndo_set_vf_vlan(struct net_device *netdev, | |
171 | int vf, u16 vlan, u8 qos); | |
ed616689 | 172 | static int igb_ndo_set_vf_bw(struct net_device *, int, int, int); |
70ea4783 LL |
173 | static int igb_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, |
174 | bool setting); | |
8151d294 WM |
175 | static int igb_ndo_get_vf_config(struct net_device *netdev, int vf, |
176 | struct ifla_vf_info *ivi); | |
17dc566c | 177 | static void igb_check_vf_rate_limit(struct igb_adapter *); |
46a01698 RL |
178 | |
179 | #ifdef CONFIG_PCI_IOV | |
0224d663 | 180 | static int igb_vf_configure(struct igb_adapter *adapter, int vf); |
781798a1 | 181 | static int igb_pci_enable_sriov(struct pci_dev *dev, int num_vfs); |
46a01698 | 182 | #endif |
9d5c8243 | 183 | |
9d5c8243 | 184 | #ifdef CONFIG_PM |
d9dd966d | 185 | #ifdef CONFIG_PM_SLEEP |
749ab2cd | 186 | static int igb_suspend(struct device *); |
d9dd966d | 187 | #endif |
749ab2cd YZ |
188 | static int igb_resume(struct device *); |
189 | #ifdef CONFIG_PM_RUNTIME | |
190 | static int igb_runtime_suspend(struct device *dev); | |
191 | static int igb_runtime_resume(struct device *dev); | |
192 | static int igb_runtime_idle(struct device *dev); | |
193 | #endif | |
194 | static const struct dev_pm_ops igb_pm_ops = { | |
195 | SET_SYSTEM_SLEEP_PM_OPS(igb_suspend, igb_resume) | |
196 | SET_RUNTIME_PM_OPS(igb_runtime_suspend, igb_runtime_resume, | |
197 | igb_runtime_idle) | |
198 | }; | |
9d5c8243 AK |
199 | #endif |
200 | static void igb_shutdown(struct pci_dev *); | |
fa44f2f1 | 201 | static int igb_pci_sriov_configure(struct pci_dev *dev, int num_vfs); |
421e02f0 | 202 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
203 | static int igb_notify_dca(struct notifier_block *, unsigned long, void *); |
204 | static struct notifier_block dca_notifier = { | |
205 | .notifier_call = igb_notify_dca, | |
206 | .next = NULL, | |
207 | .priority = 0 | |
208 | }; | |
209 | #endif | |
9d5c8243 AK |
210 | #ifdef CONFIG_NET_POLL_CONTROLLER |
211 | /* for netdump / net console */ | |
212 | static void igb_netpoll(struct net_device *); | |
213 | #endif | |
37680117 | 214 | #ifdef CONFIG_PCI_IOV |
6dd6d2b7 | 215 | static unsigned int max_vfs; |
2a3abf6d | 216 | module_param(max_vfs, uint, 0); |
c75c4edf | 217 | MODULE_PARM_DESC(max_vfs, "Maximum number of virtual functions to allocate per physical function"); |
2a3abf6d AD |
218 | #endif /* CONFIG_PCI_IOV */ |
219 | ||
9d5c8243 AK |
220 | static pci_ers_result_t igb_io_error_detected(struct pci_dev *, |
221 | pci_channel_state_t); | |
222 | static pci_ers_result_t igb_io_slot_reset(struct pci_dev *); | |
223 | static void igb_io_resume(struct pci_dev *); | |
224 | ||
3646f0e5 | 225 | static const struct pci_error_handlers igb_err_handler = { |
9d5c8243 AK |
226 | .error_detected = igb_io_error_detected, |
227 | .slot_reset = igb_io_slot_reset, | |
228 | .resume = igb_io_resume, | |
229 | }; | |
230 | ||
b6e0c419 | 231 | static void igb_init_dmac(struct igb_adapter *adapter, u32 pba); |
9d5c8243 AK |
232 | |
233 | static struct pci_driver igb_driver = { | |
234 | .name = igb_driver_name, | |
235 | .id_table = igb_pci_tbl, | |
236 | .probe = igb_probe, | |
9f9a12f8 | 237 | .remove = igb_remove, |
9d5c8243 | 238 | #ifdef CONFIG_PM |
749ab2cd | 239 | .driver.pm = &igb_pm_ops, |
9d5c8243 AK |
240 | #endif |
241 | .shutdown = igb_shutdown, | |
fa44f2f1 | 242 | .sriov_configure = igb_pci_sriov_configure, |
9d5c8243 AK |
243 | .err_handler = &igb_err_handler |
244 | }; | |
245 | ||
246 | MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>"); | |
247 | MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver"); | |
248 | MODULE_LICENSE("GPL"); | |
249 | MODULE_VERSION(DRV_VERSION); | |
250 | ||
b3f4d599 | 251 | #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK) |
252 | static int debug = -1; | |
253 | module_param(debug, int, 0); | |
254 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
255 | ||
c97ec42a TI |
256 | struct igb_reg_info { |
257 | u32 ofs; | |
258 | char *name; | |
259 | }; | |
260 | ||
261 | static const struct igb_reg_info igb_reg_info_tbl[] = { | |
262 | ||
263 | /* General Registers */ | |
264 | {E1000_CTRL, "CTRL"}, | |
265 | {E1000_STATUS, "STATUS"}, | |
266 | {E1000_CTRL_EXT, "CTRL_EXT"}, | |
267 | ||
268 | /* Interrupt Registers */ | |
269 | {E1000_ICR, "ICR"}, | |
270 | ||
271 | /* RX Registers */ | |
272 | {E1000_RCTL, "RCTL"}, | |
273 | {E1000_RDLEN(0), "RDLEN"}, | |
274 | {E1000_RDH(0), "RDH"}, | |
275 | {E1000_RDT(0), "RDT"}, | |
276 | {E1000_RXDCTL(0), "RXDCTL"}, | |
277 | {E1000_RDBAL(0), "RDBAL"}, | |
278 | {E1000_RDBAH(0), "RDBAH"}, | |
279 | ||
280 | /* TX Registers */ | |
281 | {E1000_TCTL, "TCTL"}, | |
282 | {E1000_TDBAL(0), "TDBAL"}, | |
283 | {E1000_TDBAH(0), "TDBAH"}, | |
284 | {E1000_TDLEN(0), "TDLEN"}, | |
285 | {E1000_TDH(0), "TDH"}, | |
286 | {E1000_TDT(0), "TDT"}, | |
287 | {E1000_TXDCTL(0), "TXDCTL"}, | |
288 | {E1000_TDFH, "TDFH"}, | |
289 | {E1000_TDFT, "TDFT"}, | |
290 | {E1000_TDFHS, "TDFHS"}, | |
291 | {E1000_TDFPC, "TDFPC"}, | |
292 | ||
293 | /* List Terminator */ | |
294 | {} | |
295 | }; | |
296 | ||
b980ac18 | 297 | /* igb_regdump - register printout routine */ |
c97ec42a TI |
298 | static void igb_regdump(struct e1000_hw *hw, struct igb_reg_info *reginfo) |
299 | { | |
300 | int n = 0; | |
301 | char rname[16]; | |
302 | u32 regs[8]; | |
303 | ||
304 | switch (reginfo->ofs) { | |
305 | case E1000_RDLEN(0): | |
306 | for (n = 0; n < 4; n++) | |
307 | regs[n] = rd32(E1000_RDLEN(n)); | |
308 | break; | |
309 | case E1000_RDH(0): | |
310 | for (n = 0; n < 4; n++) | |
311 | regs[n] = rd32(E1000_RDH(n)); | |
312 | break; | |
313 | case E1000_RDT(0): | |
314 | for (n = 0; n < 4; n++) | |
315 | regs[n] = rd32(E1000_RDT(n)); | |
316 | break; | |
317 | case E1000_RXDCTL(0): | |
318 | for (n = 0; n < 4; n++) | |
319 | regs[n] = rd32(E1000_RXDCTL(n)); | |
320 | break; | |
321 | case E1000_RDBAL(0): | |
322 | for (n = 0; n < 4; n++) | |
323 | regs[n] = rd32(E1000_RDBAL(n)); | |
324 | break; | |
325 | case E1000_RDBAH(0): | |
326 | for (n = 0; n < 4; n++) | |
327 | regs[n] = rd32(E1000_RDBAH(n)); | |
328 | break; | |
329 | case E1000_TDBAL(0): | |
330 | for (n = 0; n < 4; n++) | |
331 | regs[n] = rd32(E1000_RDBAL(n)); | |
332 | break; | |
333 | case E1000_TDBAH(0): | |
334 | for (n = 0; n < 4; n++) | |
335 | regs[n] = rd32(E1000_TDBAH(n)); | |
336 | break; | |
337 | case E1000_TDLEN(0): | |
338 | for (n = 0; n < 4; n++) | |
339 | regs[n] = rd32(E1000_TDLEN(n)); | |
340 | break; | |
341 | case E1000_TDH(0): | |
342 | for (n = 0; n < 4; n++) | |
343 | regs[n] = rd32(E1000_TDH(n)); | |
344 | break; | |
345 | case E1000_TDT(0): | |
346 | for (n = 0; n < 4; n++) | |
347 | regs[n] = rd32(E1000_TDT(n)); | |
348 | break; | |
349 | case E1000_TXDCTL(0): | |
350 | for (n = 0; n < 4; n++) | |
351 | regs[n] = rd32(E1000_TXDCTL(n)); | |
352 | break; | |
353 | default: | |
876d2d6f | 354 | pr_info("%-15s %08x\n", reginfo->name, rd32(reginfo->ofs)); |
c97ec42a TI |
355 | return; |
356 | } | |
357 | ||
358 | snprintf(rname, 16, "%s%s", reginfo->name, "[0-3]"); | |
876d2d6f JK |
359 | pr_info("%-15s %08x %08x %08x %08x\n", rname, regs[0], regs[1], |
360 | regs[2], regs[3]); | |
c97ec42a TI |
361 | } |
362 | ||
b980ac18 | 363 | /* igb_dump - Print registers, Tx-rings and Rx-rings */ |
c97ec42a TI |
364 | static void igb_dump(struct igb_adapter *adapter) |
365 | { | |
366 | struct net_device *netdev = adapter->netdev; | |
367 | struct e1000_hw *hw = &adapter->hw; | |
368 | struct igb_reg_info *reginfo; | |
c97ec42a TI |
369 | struct igb_ring *tx_ring; |
370 | union e1000_adv_tx_desc *tx_desc; | |
371 | struct my_u0 { u64 a; u64 b; } *u0; | |
c97ec42a TI |
372 | struct igb_ring *rx_ring; |
373 | union e1000_adv_rx_desc *rx_desc; | |
374 | u32 staterr; | |
6ad4edfc | 375 | u16 i, n; |
c97ec42a TI |
376 | |
377 | if (!netif_msg_hw(adapter)) | |
378 | return; | |
379 | ||
380 | /* Print netdevice Info */ | |
381 | if (netdev) { | |
382 | dev_info(&adapter->pdev->dev, "Net device Info\n"); | |
c75c4edf | 383 | pr_info("Device Name state trans_start last_rx\n"); |
876d2d6f JK |
384 | pr_info("%-15s %016lX %016lX %016lX\n", netdev->name, |
385 | netdev->state, netdev->trans_start, netdev->last_rx); | |
c97ec42a TI |
386 | } |
387 | ||
388 | /* Print Registers */ | |
389 | dev_info(&adapter->pdev->dev, "Register Dump\n"); | |
876d2d6f | 390 | pr_info(" Register Name Value\n"); |
c97ec42a TI |
391 | for (reginfo = (struct igb_reg_info *)igb_reg_info_tbl; |
392 | reginfo->name; reginfo++) { | |
393 | igb_regdump(hw, reginfo); | |
394 | } | |
395 | ||
396 | /* Print TX Ring Summary */ | |
397 | if (!netdev || !netif_running(netdev)) | |
398 | goto exit; | |
399 | ||
400 | dev_info(&adapter->pdev->dev, "TX Rings Summary\n"); | |
876d2d6f | 401 | pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n"); |
c97ec42a | 402 | for (n = 0; n < adapter->num_tx_queues; n++) { |
06034649 | 403 | struct igb_tx_buffer *buffer_info; |
c97ec42a | 404 | tx_ring = adapter->tx_ring[n]; |
06034649 | 405 | buffer_info = &tx_ring->tx_buffer_info[tx_ring->next_to_clean]; |
876d2d6f JK |
406 | pr_info(" %5d %5X %5X %016llX %04X %p %016llX\n", |
407 | n, tx_ring->next_to_use, tx_ring->next_to_clean, | |
c9f14bf3 AD |
408 | (u64)dma_unmap_addr(buffer_info, dma), |
409 | dma_unmap_len(buffer_info, len), | |
876d2d6f JK |
410 | buffer_info->next_to_watch, |
411 | (u64)buffer_info->time_stamp); | |
c97ec42a TI |
412 | } |
413 | ||
414 | /* Print TX Rings */ | |
415 | if (!netif_msg_tx_done(adapter)) | |
416 | goto rx_ring_summary; | |
417 | ||
418 | dev_info(&adapter->pdev->dev, "TX Rings Dump\n"); | |
419 | ||
420 | /* Transmit Descriptor Formats | |
421 | * | |
422 | * Advanced Transmit Descriptor | |
423 | * +--------------------------------------------------------------+ | |
424 | * 0 | Buffer Address [63:0] | | |
425 | * +--------------------------------------------------------------+ | |
426 | * 8 | PAYLEN | PORTS |CC|IDX | STA | DCMD |DTYP|MAC|RSV| DTALEN | | |
427 | * +--------------------------------------------------------------+ | |
428 | * 63 46 45 40 39 38 36 35 32 31 24 15 0 | |
429 | */ | |
430 | ||
431 | for (n = 0; n < adapter->num_tx_queues; n++) { | |
432 | tx_ring = adapter->tx_ring[n]; | |
876d2d6f JK |
433 | pr_info("------------------------------------\n"); |
434 | pr_info("TX QUEUE INDEX = %d\n", tx_ring->queue_index); | |
435 | pr_info("------------------------------------\n"); | |
c75c4edf | 436 | pr_info("T [desc] [address 63:0 ] [PlPOCIStDDM Ln] [bi->dma ] leng ntw timestamp bi->skb\n"); |
c97ec42a TI |
437 | |
438 | for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) { | |
876d2d6f | 439 | const char *next_desc; |
06034649 | 440 | struct igb_tx_buffer *buffer_info; |
60136906 | 441 | tx_desc = IGB_TX_DESC(tx_ring, i); |
06034649 | 442 | buffer_info = &tx_ring->tx_buffer_info[i]; |
c97ec42a | 443 | u0 = (struct my_u0 *)tx_desc; |
876d2d6f JK |
444 | if (i == tx_ring->next_to_use && |
445 | i == tx_ring->next_to_clean) | |
446 | next_desc = " NTC/U"; | |
447 | else if (i == tx_ring->next_to_use) | |
448 | next_desc = " NTU"; | |
449 | else if (i == tx_ring->next_to_clean) | |
450 | next_desc = " NTC"; | |
451 | else | |
452 | next_desc = ""; | |
453 | ||
c75c4edf CW |
454 | pr_info("T [0x%03X] %016llX %016llX %016llX %04X %p %016llX %p%s\n", |
455 | i, le64_to_cpu(u0->a), | |
c97ec42a | 456 | le64_to_cpu(u0->b), |
c9f14bf3 AD |
457 | (u64)dma_unmap_addr(buffer_info, dma), |
458 | dma_unmap_len(buffer_info, len), | |
c97ec42a TI |
459 | buffer_info->next_to_watch, |
460 | (u64)buffer_info->time_stamp, | |
876d2d6f | 461 | buffer_info->skb, next_desc); |
c97ec42a | 462 | |
b669588a | 463 | if (netif_msg_pktdata(adapter) && buffer_info->skb) |
c97ec42a TI |
464 | print_hex_dump(KERN_INFO, "", |
465 | DUMP_PREFIX_ADDRESS, | |
b669588a | 466 | 16, 1, buffer_info->skb->data, |
c9f14bf3 AD |
467 | dma_unmap_len(buffer_info, len), |
468 | true); | |
c97ec42a TI |
469 | } |
470 | } | |
471 | ||
472 | /* Print RX Rings Summary */ | |
473 | rx_ring_summary: | |
474 | dev_info(&adapter->pdev->dev, "RX Rings Summary\n"); | |
876d2d6f | 475 | pr_info("Queue [NTU] [NTC]\n"); |
c97ec42a TI |
476 | for (n = 0; n < adapter->num_rx_queues; n++) { |
477 | rx_ring = adapter->rx_ring[n]; | |
876d2d6f JK |
478 | pr_info(" %5d %5X %5X\n", |
479 | n, rx_ring->next_to_use, rx_ring->next_to_clean); | |
c97ec42a TI |
480 | } |
481 | ||
482 | /* Print RX Rings */ | |
483 | if (!netif_msg_rx_status(adapter)) | |
484 | goto exit; | |
485 | ||
486 | dev_info(&adapter->pdev->dev, "RX Rings Dump\n"); | |
487 | ||
488 | /* Advanced Receive Descriptor (Read) Format | |
489 | * 63 1 0 | |
490 | * +-----------------------------------------------------+ | |
491 | * 0 | Packet Buffer Address [63:1] |A0/NSE| | |
492 | * +----------------------------------------------+------+ | |
493 | * 8 | Header Buffer Address [63:1] | DD | | |
494 | * +-----------------------------------------------------+ | |
495 | * | |
496 | * | |
497 | * Advanced Receive Descriptor (Write-Back) Format | |
498 | * | |
499 | * 63 48 47 32 31 30 21 20 17 16 4 3 0 | |
500 | * +------------------------------------------------------+ | |
501 | * 0 | Packet IP |SPH| HDR_LEN | RSV|Packet| RSS | | |
502 | * | Checksum Ident | | | | Type | Type | | |
503 | * +------------------------------------------------------+ | |
504 | * 8 | VLAN Tag | Length | Extended Error | Extended Status | | |
505 | * +------------------------------------------------------+ | |
506 | * 63 48 47 32 31 20 19 0 | |
507 | */ | |
508 | ||
509 | for (n = 0; n < adapter->num_rx_queues; n++) { | |
510 | rx_ring = adapter->rx_ring[n]; | |
876d2d6f JK |
511 | pr_info("------------------------------------\n"); |
512 | pr_info("RX QUEUE INDEX = %d\n", rx_ring->queue_index); | |
513 | pr_info("------------------------------------\n"); | |
c75c4edf CW |
514 | pr_info("R [desc] [ PktBuf A0] [ HeadBuf DD] [bi->dma ] [bi->skb] <-- Adv Rx Read format\n"); |
515 | pr_info("RWB[desc] [PcsmIpSHl PtRs] [vl er S cks ln] ---------------- [bi->skb] <-- Adv Rx Write-Back format\n"); | |
c97ec42a TI |
516 | |
517 | for (i = 0; i < rx_ring->count; i++) { | |
876d2d6f | 518 | const char *next_desc; |
06034649 AD |
519 | struct igb_rx_buffer *buffer_info; |
520 | buffer_info = &rx_ring->rx_buffer_info[i]; | |
60136906 | 521 | rx_desc = IGB_RX_DESC(rx_ring, i); |
c97ec42a TI |
522 | u0 = (struct my_u0 *)rx_desc; |
523 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
876d2d6f JK |
524 | |
525 | if (i == rx_ring->next_to_use) | |
526 | next_desc = " NTU"; | |
527 | else if (i == rx_ring->next_to_clean) | |
528 | next_desc = " NTC"; | |
529 | else | |
530 | next_desc = ""; | |
531 | ||
c97ec42a TI |
532 | if (staterr & E1000_RXD_STAT_DD) { |
533 | /* Descriptor Done */ | |
1a1c225b AD |
534 | pr_info("%s[0x%03X] %016llX %016llX ---------------- %s\n", |
535 | "RWB", i, | |
c97ec42a TI |
536 | le64_to_cpu(u0->a), |
537 | le64_to_cpu(u0->b), | |
1a1c225b | 538 | next_desc); |
c97ec42a | 539 | } else { |
1a1c225b AD |
540 | pr_info("%s[0x%03X] %016llX %016llX %016llX %s\n", |
541 | "R ", i, | |
c97ec42a TI |
542 | le64_to_cpu(u0->a), |
543 | le64_to_cpu(u0->b), | |
544 | (u64)buffer_info->dma, | |
1a1c225b | 545 | next_desc); |
c97ec42a | 546 | |
b669588a | 547 | if (netif_msg_pktdata(adapter) && |
1a1c225b | 548 | buffer_info->dma && buffer_info->page) { |
44390ca6 AD |
549 | print_hex_dump(KERN_INFO, "", |
550 | DUMP_PREFIX_ADDRESS, | |
551 | 16, 1, | |
b669588a ET |
552 | page_address(buffer_info->page) + |
553 | buffer_info->page_offset, | |
de78d1f9 | 554 | IGB_RX_BUFSZ, true); |
c97ec42a TI |
555 | } |
556 | } | |
c97ec42a TI |
557 | } |
558 | } | |
559 | ||
560 | exit: | |
561 | return; | |
562 | } | |
563 | ||
b980ac18 JK |
564 | /** |
565 | * igb_get_i2c_data - Reads the I2C SDA data bit | |
441fc6fd CW |
566 | * @hw: pointer to hardware structure |
567 | * @i2cctl: Current value of I2CCTL register | |
568 | * | |
569 | * Returns the I2C data bit value | |
b980ac18 | 570 | **/ |
441fc6fd CW |
571 | static int igb_get_i2c_data(void *data) |
572 | { | |
573 | struct igb_adapter *adapter = (struct igb_adapter *)data; | |
574 | struct e1000_hw *hw = &adapter->hw; | |
575 | s32 i2cctl = rd32(E1000_I2CPARAMS); | |
576 | ||
da1f1dfe | 577 | return !!(i2cctl & E1000_I2C_DATA_IN); |
441fc6fd CW |
578 | } |
579 | ||
b980ac18 JK |
580 | /** |
581 | * igb_set_i2c_data - Sets the I2C data bit | |
441fc6fd CW |
582 | * @data: pointer to hardware structure |
583 | * @state: I2C data value (0 or 1) to set | |
584 | * | |
585 | * Sets the I2C data bit | |
b980ac18 | 586 | **/ |
441fc6fd CW |
587 | static void igb_set_i2c_data(void *data, int state) |
588 | { | |
589 | struct igb_adapter *adapter = (struct igb_adapter *)data; | |
590 | struct e1000_hw *hw = &adapter->hw; | |
591 | s32 i2cctl = rd32(E1000_I2CPARAMS); | |
592 | ||
593 | if (state) | |
594 | i2cctl |= E1000_I2C_DATA_OUT; | |
595 | else | |
596 | i2cctl &= ~E1000_I2C_DATA_OUT; | |
597 | ||
598 | i2cctl &= ~E1000_I2C_DATA_OE_N; | |
599 | i2cctl |= E1000_I2C_CLK_OE_N; | |
600 | wr32(E1000_I2CPARAMS, i2cctl); | |
601 | wrfl(); | |
602 | ||
603 | } | |
604 | ||
b980ac18 JK |
605 | /** |
606 | * igb_set_i2c_clk - Sets the I2C SCL clock | |
441fc6fd CW |
607 | * @data: pointer to hardware structure |
608 | * @state: state to set clock | |
609 | * | |
610 | * Sets the I2C clock line to state | |
b980ac18 | 611 | **/ |
441fc6fd CW |
612 | static void igb_set_i2c_clk(void *data, int state) |
613 | { | |
614 | struct igb_adapter *adapter = (struct igb_adapter *)data; | |
615 | struct e1000_hw *hw = &adapter->hw; | |
616 | s32 i2cctl = rd32(E1000_I2CPARAMS); | |
617 | ||
618 | if (state) { | |
619 | i2cctl |= E1000_I2C_CLK_OUT; | |
620 | i2cctl &= ~E1000_I2C_CLK_OE_N; | |
621 | } else { | |
622 | i2cctl &= ~E1000_I2C_CLK_OUT; | |
623 | i2cctl &= ~E1000_I2C_CLK_OE_N; | |
624 | } | |
625 | wr32(E1000_I2CPARAMS, i2cctl); | |
626 | wrfl(); | |
627 | } | |
628 | ||
b980ac18 JK |
629 | /** |
630 | * igb_get_i2c_clk - Gets the I2C SCL clock state | |
441fc6fd CW |
631 | * @data: pointer to hardware structure |
632 | * | |
633 | * Gets the I2C clock state | |
b980ac18 | 634 | **/ |
441fc6fd CW |
635 | static int igb_get_i2c_clk(void *data) |
636 | { | |
637 | struct igb_adapter *adapter = (struct igb_adapter *)data; | |
638 | struct e1000_hw *hw = &adapter->hw; | |
639 | s32 i2cctl = rd32(E1000_I2CPARAMS); | |
640 | ||
da1f1dfe | 641 | return !!(i2cctl & E1000_I2C_CLK_IN); |
441fc6fd CW |
642 | } |
643 | ||
644 | static const struct i2c_algo_bit_data igb_i2c_algo = { | |
645 | .setsda = igb_set_i2c_data, | |
646 | .setscl = igb_set_i2c_clk, | |
647 | .getsda = igb_get_i2c_data, | |
648 | .getscl = igb_get_i2c_clk, | |
649 | .udelay = 5, | |
650 | .timeout = 20, | |
651 | }; | |
652 | ||
9d5c8243 | 653 | /** |
b980ac18 JK |
654 | * igb_get_hw_dev - return device |
655 | * @hw: pointer to hardware structure | |
656 | * | |
657 | * used by hardware layer to print debugging information | |
9d5c8243 | 658 | **/ |
c041076a | 659 | struct net_device *igb_get_hw_dev(struct e1000_hw *hw) |
9d5c8243 AK |
660 | { |
661 | struct igb_adapter *adapter = hw->back; | |
c041076a | 662 | return adapter->netdev; |
9d5c8243 | 663 | } |
38c845c7 | 664 | |
9d5c8243 | 665 | /** |
b980ac18 | 666 | * igb_init_module - Driver Registration Routine |
9d5c8243 | 667 | * |
b980ac18 JK |
668 | * igb_init_module is the first routine called when the driver is |
669 | * loaded. All it does is register with the PCI subsystem. | |
9d5c8243 AK |
670 | **/ |
671 | static int __init igb_init_module(void) | |
672 | { | |
673 | int ret; | |
9005df38 | 674 | |
876d2d6f | 675 | pr_info("%s - version %s\n", |
9d5c8243 | 676 | igb_driver_string, igb_driver_version); |
876d2d6f | 677 | pr_info("%s\n", igb_copyright); |
9d5c8243 | 678 | |
421e02f0 | 679 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
680 | dca_register_notify(&dca_notifier); |
681 | #endif | |
bbd98fe4 | 682 | ret = pci_register_driver(&igb_driver); |
9d5c8243 AK |
683 | return ret; |
684 | } | |
685 | ||
686 | module_init(igb_init_module); | |
687 | ||
688 | /** | |
b980ac18 | 689 | * igb_exit_module - Driver Exit Cleanup Routine |
9d5c8243 | 690 | * |
b980ac18 JK |
691 | * igb_exit_module is called just before the driver is removed |
692 | * from memory. | |
9d5c8243 AK |
693 | **/ |
694 | static void __exit igb_exit_module(void) | |
695 | { | |
421e02f0 | 696 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
697 | dca_unregister_notify(&dca_notifier); |
698 | #endif | |
9d5c8243 AK |
699 | pci_unregister_driver(&igb_driver); |
700 | } | |
701 | ||
702 | module_exit(igb_exit_module); | |
703 | ||
26bc19ec AD |
704 | #define Q_IDX_82576(i) (((i & 0x1) << 3) + (i >> 1)) |
705 | /** | |
b980ac18 JK |
706 | * igb_cache_ring_register - Descriptor ring to register mapping |
707 | * @adapter: board private structure to initialize | |
26bc19ec | 708 | * |
b980ac18 JK |
709 | * Once we know the feature-set enabled for the device, we'll cache |
710 | * the register offset the descriptor ring is assigned to. | |
26bc19ec AD |
711 | **/ |
712 | static void igb_cache_ring_register(struct igb_adapter *adapter) | |
713 | { | |
ee1b9f06 | 714 | int i = 0, j = 0; |
047e0030 | 715 | u32 rbase_offset = adapter->vfs_allocated_count; |
26bc19ec AD |
716 | |
717 | switch (adapter->hw.mac.type) { | |
718 | case e1000_82576: | |
719 | /* The queues are allocated for virtualization such that VF 0 | |
720 | * is allocated queues 0 and 8, VF 1 queues 1 and 9, etc. | |
721 | * In order to avoid collision we start at the first free queue | |
722 | * and continue consuming queues in the same sequence | |
723 | */ | |
ee1b9f06 | 724 | if (adapter->vfs_allocated_count) { |
a99955fc | 725 | for (; i < adapter->rss_queues; i++) |
3025a446 | 726 | adapter->rx_ring[i]->reg_idx = rbase_offset + |
b980ac18 | 727 | Q_IDX_82576(i); |
ee1b9f06 | 728 | } |
b26141d4 | 729 | /* Fall through */ |
26bc19ec | 730 | case e1000_82575: |
55cac248 | 731 | case e1000_82580: |
d2ba2ed8 | 732 | case e1000_i350: |
ceb5f13b | 733 | case e1000_i354: |
f96a8a0b CW |
734 | case e1000_i210: |
735 | case e1000_i211: | |
b26141d4 | 736 | /* Fall through */ |
26bc19ec | 737 | default: |
ee1b9f06 | 738 | for (; i < adapter->num_rx_queues; i++) |
3025a446 | 739 | adapter->rx_ring[i]->reg_idx = rbase_offset + i; |
ee1b9f06 | 740 | for (; j < adapter->num_tx_queues; j++) |
3025a446 | 741 | adapter->tx_ring[j]->reg_idx = rbase_offset + j; |
26bc19ec AD |
742 | break; |
743 | } | |
744 | } | |
745 | ||
22a8b291 FT |
746 | u32 igb_rd32(struct e1000_hw *hw, u32 reg) |
747 | { | |
748 | struct igb_adapter *igb = container_of(hw, struct igb_adapter, hw); | |
749 | u8 __iomem *hw_addr = ACCESS_ONCE(hw->hw_addr); | |
750 | u32 value = 0; | |
751 | ||
752 | if (E1000_REMOVED(hw_addr)) | |
753 | return ~value; | |
754 | ||
755 | value = readl(&hw_addr[reg]); | |
756 | ||
757 | /* reads should not return all F's */ | |
758 | if (!(~value) && (!reg || !(~readl(hw_addr)))) { | |
759 | struct net_device *netdev = igb->netdev; | |
760 | hw->hw_addr = NULL; | |
761 | netif_device_detach(netdev); | |
762 | netdev_err(netdev, "PCIe link lost, device now detached\n"); | |
763 | } | |
764 | ||
765 | return value; | |
766 | } | |
767 | ||
4be000c8 AD |
768 | /** |
769 | * igb_write_ivar - configure ivar for given MSI-X vector | |
770 | * @hw: pointer to the HW structure | |
771 | * @msix_vector: vector number we are allocating to a given ring | |
772 | * @index: row index of IVAR register to write within IVAR table | |
773 | * @offset: column offset of in IVAR, should be multiple of 8 | |
774 | * | |
775 | * This function is intended to handle the writing of the IVAR register | |
776 | * for adapters 82576 and newer. The IVAR table consists of 2 columns, | |
777 | * each containing an cause allocation for an Rx and Tx ring, and a | |
778 | * variable number of rows depending on the number of queues supported. | |
779 | **/ | |
780 | static void igb_write_ivar(struct e1000_hw *hw, int msix_vector, | |
781 | int index, int offset) | |
782 | { | |
783 | u32 ivar = array_rd32(E1000_IVAR0, index); | |
784 | ||
785 | /* clear any bits that are currently set */ | |
786 | ivar &= ~((u32)0xFF << offset); | |
787 | ||
788 | /* write vector and valid bit */ | |
789 | ivar |= (msix_vector | E1000_IVAR_VALID) << offset; | |
790 | ||
791 | array_wr32(E1000_IVAR0, index, ivar); | |
792 | } | |
793 | ||
9d5c8243 | 794 | #define IGB_N0_QUEUE -1 |
047e0030 | 795 | static void igb_assign_vector(struct igb_q_vector *q_vector, int msix_vector) |
9d5c8243 | 796 | { |
047e0030 | 797 | struct igb_adapter *adapter = q_vector->adapter; |
9d5c8243 | 798 | struct e1000_hw *hw = &adapter->hw; |
047e0030 AD |
799 | int rx_queue = IGB_N0_QUEUE; |
800 | int tx_queue = IGB_N0_QUEUE; | |
4be000c8 | 801 | u32 msixbm = 0; |
047e0030 | 802 | |
0ba82994 AD |
803 | if (q_vector->rx.ring) |
804 | rx_queue = q_vector->rx.ring->reg_idx; | |
805 | if (q_vector->tx.ring) | |
806 | tx_queue = q_vector->tx.ring->reg_idx; | |
2d064c06 AD |
807 | |
808 | switch (hw->mac.type) { | |
809 | case e1000_82575: | |
9d5c8243 | 810 | /* The 82575 assigns vectors using a bitmask, which matches the |
b980ac18 JK |
811 | * bitmask for the EICR/EIMS/EIMC registers. To assign one |
812 | * or more queues to a vector, we write the appropriate bits | |
813 | * into the MSIXBM register for that vector. | |
814 | */ | |
047e0030 | 815 | if (rx_queue > IGB_N0_QUEUE) |
9d5c8243 | 816 | msixbm = E1000_EICR_RX_QUEUE0 << rx_queue; |
047e0030 | 817 | if (tx_queue > IGB_N0_QUEUE) |
9d5c8243 | 818 | msixbm |= E1000_EICR_TX_QUEUE0 << tx_queue; |
cd14ef54 | 819 | if (!(adapter->flags & IGB_FLAG_HAS_MSIX) && msix_vector == 0) |
feeb2721 | 820 | msixbm |= E1000_EIMS_OTHER; |
9d5c8243 | 821 | array_wr32(E1000_MSIXBM(0), msix_vector, msixbm); |
047e0030 | 822 | q_vector->eims_value = msixbm; |
2d064c06 AD |
823 | break; |
824 | case e1000_82576: | |
b980ac18 | 825 | /* 82576 uses a table that essentially consists of 2 columns |
4be000c8 AD |
826 | * with 8 rows. The ordering is column-major so we use the |
827 | * lower 3 bits as the row index, and the 4th bit as the | |
828 | * column offset. | |
829 | */ | |
830 | if (rx_queue > IGB_N0_QUEUE) | |
831 | igb_write_ivar(hw, msix_vector, | |
832 | rx_queue & 0x7, | |
833 | (rx_queue & 0x8) << 1); | |
834 | if (tx_queue > IGB_N0_QUEUE) | |
835 | igb_write_ivar(hw, msix_vector, | |
836 | tx_queue & 0x7, | |
837 | ((tx_queue & 0x8) << 1) + 8); | |
047e0030 | 838 | q_vector->eims_value = 1 << msix_vector; |
2d064c06 | 839 | break; |
55cac248 | 840 | case e1000_82580: |
d2ba2ed8 | 841 | case e1000_i350: |
ceb5f13b | 842 | case e1000_i354: |
f96a8a0b CW |
843 | case e1000_i210: |
844 | case e1000_i211: | |
b980ac18 | 845 | /* On 82580 and newer adapters the scheme is similar to 82576 |
4be000c8 AD |
846 | * however instead of ordering column-major we have things |
847 | * ordered row-major. So we traverse the table by using | |
848 | * bit 0 as the column offset, and the remaining bits as the | |
849 | * row index. | |
850 | */ | |
851 | if (rx_queue > IGB_N0_QUEUE) | |
852 | igb_write_ivar(hw, msix_vector, | |
853 | rx_queue >> 1, | |
854 | (rx_queue & 0x1) << 4); | |
855 | if (tx_queue > IGB_N0_QUEUE) | |
856 | igb_write_ivar(hw, msix_vector, | |
857 | tx_queue >> 1, | |
858 | ((tx_queue & 0x1) << 4) + 8); | |
55cac248 AD |
859 | q_vector->eims_value = 1 << msix_vector; |
860 | break; | |
2d064c06 AD |
861 | default: |
862 | BUG(); | |
863 | break; | |
864 | } | |
26b39276 AD |
865 | |
866 | /* add q_vector eims value to global eims_enable_mask */ | |
867 | adapter->eims_enable_mask |= q_vector->eims_value; | |
868 | ||
869 | /* configure q_vector to set itr on first interrupt */ | |
870 | q_vector->set_itr = 1; | |
9d5c8243 AK |
871 | } |
872 | ||
873 | /** | |
b980ac18 JK |
874 | * igb_configure_msix - Configure MSI-X hardware |
875 | * @adapter: board private structure to initialize | |
9d5c8243 | 876 | * |
b980ac18 JK |
877 | * igb_configure_msix sets up the hardware to properly |
878 | * generate MSI-X interrupts. | |
9d5c8243 AK |
879 | **/ |
880 | static void igb_configure_msix(struct igb_adapter *adapter) | |
881 | { | |
882 | u32 tmp; | |
883 | int i, vector = 0; | |
884 | struct e1000_hw *hw = &adapter->hw; | |
885 | ||
886 | adapter->eims_enable_mask = 0; | |
9d5c8243 AK |
887 | |
888 | /* set vector for other causes, i.e. link changes */ | |
2d064c06 AD |
889 | switch (hw->mac.type) { |
890 | case e1000_82575: | |
9d5c8243 AK |
891 | tmp = rd32(E1000_CTRL_EXT); |
892 | /* enable MSI-X PBA support*/ | |
893 | tmp |= E1000_CTRL_EXT_PBA_CLR; | |
894 | ||
895 | /* Auto-Mask interrupts upon ICR read. */ | |
896 | tmp |= E1000_CTRL_EXT_EIAME; | |
897 | tmp |= E1000_CTRL_EXT_IRCA; | |
898 | ||
899 | wr32(E1000_CTRL_EXT, tmp); | |
047e0030 AD |
900 | |
901 | /* enable msix_other interrupt */ | |
b980ac18 | 902 | array_wr32(E1000_MSIXBM(0), vector++, E1000_EIMS_OTHER); |
844290e5 | 903 | adapter->eims_other = E1000_EIMS_OTHER; |
9d5c8243 | 904 | |
2d064c06 AD |
905 | break; |
906 | ||
907 | case e1000_82576: | |
55cac248 | 908 | case e1000_82580: |
d2ba2ed8 | 909 | case e1000_i350: |
ceb5f13b | 910 | case e1000_i354: |
f96a8a0b CW |
911 | case e1000_i210: |
912 | case e1000_i211: | |
047e0030 | 913 | /* Turn on MSI-X capability first, or our settings |
b980ac18 JK |
914 | * won't stick. And it will take days to debug. |
915 | */ | |
047e0030 | 916 | wr32(E1000_GPIE, E1000_GPIE_MSIX_MODE | |
b980ac18 JK |
917 | E1000_GPIE_PBA | E1000_GPIE_EIAME | |
918 | E1000_GPIE_NSICR); | |
047e0030 AD |
919 | |
920 | /* enable msix_other interrupt */ | |
921 | adapter->eims_other = 1 << vector; | |
2d064c06 | 922 | tmp = (vector++ | E1000_IVAR_VALID) << 8; |
2d064c06 | 923 | |
047e0030 | 924 | wr32(E1000_IVAR_MISC, tmp); |
2d064c06 AD |
925 | break; |
926 | default: | |
927 | /* do nothing, since nothing else supports MSI-X */ | |
928 | break; | |
929 | } /* switch (hw->mac.type) */ | |
047e0030 AD |
930 | |
931 | adapter->eims_enable_mask |= adapter->eims_other; | |
932 | ||
26b39276 AD |
933 | for (i = 0; i < adapter->num_q_vectors; i++) |
934 | igb_assign_vector(adapter->q_vector[i], vector++); | |
047e0030 | 935 | |
9d5c8243 AK |
936 | wrfl(); |
937 | } | |
938 | ||
939 | /** | |
b980ac18 JK |
940 | * igb_request_msix - Initialize MSI-X interrupts |
941 | * @adapter: board private structure to initialize | |
9d5c8243 | 942 | * |
b980ac18 JK |
943 | * igb_request_msix allocates MSI-X vectors and requests interrupts from the |
944 | * kernel. | |
9d5c8243 AK |
945 | **/ |
946 | static int igb_request_msix(struct igb_adapter *adapter) | |
947 | { | |
948 | struct net_device *netdev = adapter->netdev; | |
047e0030 | 949 | struct e1000_hw *hw = &adapter->hw; |
52285b76 | 950 | int i, err = 0, vector = 0, free_vector = 0; |
9d5c8243 | 951 | |
047e0030 | 952 | err = request_irq(adapter->msix_entries[vector].vector, |
b980ac18 | 953 | igb_msix_other, 0, netdev->name, adapter); |
047e0030 | 954 | if (err) |
52285b76 | 955 | goto err_out; |
047e0030 AD |
956 | |
957 | for (i = 0; i < adapter->num_q_vectors; i++) { | |
958 | struct igb_q_vector *q_vector = adapter->q_vector[i]; | |
959 | ||
52285b76 SA |
960 | vector++; |
961 | ||
047e0030 AD |
962 | q_vector->itr_register = hw->hw_addr + E1000_EITR(vector); |
963 | ||
0ba82994 | 964 | if (q_vector->rx.ring && q_vector->tx.ring) |
047e0030 | 965 | sprintf(q_vector->name, "%s-TxRx-%u", netdev->name, |
0ba82994 AD |
966 | q_vector->rx.ring->queue_index); |
967 | else if (q_vector->tx.ring) | |
047e0030 | 968 | sprintf(q_vector->name, "%s-tx-%u", netdev->name, |
0ba82994 AD |
969 | q_vector->tx.ring->queue_index); |
970 | else if (q_vector->rx.ring) | |
047e0030 | 971 | sprintf(q_vector->name, "%s-rx-%u", netdev->name, |
0ba82994 | 972 | q_vector->rx.ring->queue_index); |
9d5c8243 | 973 | else |
047e0030 AD |
974 | sprintf(q_vector->name, "%s-unused", netdev->name); |
975 | ||
9d5c8243 | 976 | err = request_irq(adapter->msix_entries[vector].vector, |
b980ac18 JK |
977 | igb_msix_ring, 0, q_vector->name, |
978 | q_vector); | |
9d5c8243 | 979 | if (err) |
52285b76 | 980 | goto err_free; |
9d5c8243 AK |
981 | } |
982 | ||
9d5c8243 AK |
983 | igb_configure_msix(adapter); |
984 | return 0; | |
52285b76 SA |
985 | |
986 | err_free: | |
987 | /* free already assigned IRQs */ | |
988 | free_irq(adapter->msix_entries[free_vector++].vector, adapter); | |
989 | ||
990 | vector--; | |
991 | for (i = 0; i < vector; i++) { | |
992 | free_irq(adapter->msix_entries[free_vector++].vector, | |
993 | adapter->q_vector[i]); | |
994 | } | |
995 | err_out: | |
9d5c8243 AK |
996 | return err; |
997 | } | |
998 | ||
5536d210 | 999 | /** |
b980ac18 JK |
1000 | * igb_free_q_vector - Free memory allocated for specific interrupt vector |
1001 | * @adapter: board private structure to initialize | |
1002 | * @v_idx: Index of vector to be freed | |
5536d210 | 1003 | * |
02ef6e1d | 1004 | * This function frees the memory allocated to the q_vector. |
5536d210 AD |
1005 | **/ |
1006 | static void igb_free_q_vector(struct igb_adapter *adapter, int v_idx) | |
1007 | { | |
1008 | struct igb_q_vector *q_vector = adapter->q_vector[v_idx]; | |
1009 | ||
02ef6e1d CW |
1010 | adapter->q_vector[v_idx] = NULL; |
1011 | ||
1012 | /* igb_get_stats64() might access the rings on this vector, | |
1013 | * we must wait a grace period before freeing it. | |
1014 | */ | |
1015 | kfree_rcu(q_vector, rcu); | |
1016 | } | |
1017 | ||
1018 | /** | |
1019 | * igb_reset_q_vector - Reset config for interrupt vector | |
1020 | * @adapter: board private structure to initialize | |
1021 | * @v_idx: Index of vector to be reset | |
1022 | * | |
1023 | * If NAPI is enabled it will delete any references to the | |
1024 | * NAPI struct. This is preparation for igb_free_q_vector. | |
1025 | **/ | |
1026 | static void igb_reset_q_vector(struct igb_adapter *adapter, int v_idx) | |
1027 | { | |
1028 | struct igb_q_vector *q_vector = adapter->q_vector[v_idx]; | |
1029 | ||
cb06d102 CP |
1030 | /* Coming from igb_set_interrupt_capability, the vectors are not yet |
1031 | * allocated. So, q_vector is NULL so we should stop here. | |
1032 | */ | |
1033 | if (!q_vector) | |
1034 | return; | |
1035 | ||
5536d210 AD |
1036 | if (q_vector->tx.ring) |
1037 | adapter->tx_ring[q_vector->tx.ring->queue_index] = NULL; | |
1038 | ||
1039 | if (q_vector->rx.ring) | |
1040 | adapter->tx_ring[q_vector->rx.ring->queue_index] = NULL; | |
1041 | ||
5536d210 AD |
1042 | netif_napi_del(&q_vector->napi); |
1043 | ||
02ef6e1d CW |
1044 | } |
1045 | ||
1046 | static void igb_reset_interrupt_capability(struct igb_adapter *adapter) | |
1047 | { | |
1048 | int v_idx = adapter->num_q_vectors; | |
1049 | ||
cd14ef54 | 1050 | if (adapter->flags & IGB_FLAG_HAS_MSIX) |
02ef6e1d | 1051 | pci_disable_msix(adapter->pdev); |
cd14ef54 | 1052 | else if (adapter->flags & IGB_FLAG_HAS_MSI) |
02ef6e1d | 1053 | pci_disable_msi(adapter->pdev); |
02ef6e1d CW |
1054 | |
1055 | while (v_idx--) | |
1056 | igb_reset_q_vector(adapter, v_idx); | |
5536d210 AD |
1057 | } |
1058 | ||
047e0030 | 1059 | /** |
b980ac18 JK |
1060 | * igb_free_q_vectors - Free memory allocated for interrupt vectors |
1061 | * @adapter: board private structure to initialize | |
047e0030 | 1062 | * |
b980ac18 JK |
1063 | * This function frees the memory allocated to the q_vectors. In addition if |
1064 | * NAPI is enabled it will delete any references to the NAPI struct prior | |
1065 | * to freeing the q_vector. | |
047e0030 AD |
1066 | **/ |
1067 | static void igb_free_q_vectors(struct igb_adapter *adapter) | |
1068 | { | |
5536d210 AD |
1069 | int v_idx = adapter->num_q_vectors; |
1070 | ||
1071 | adapter->num_tx_queues = 0; | |
1072 | adapter->num_rx_queues = 0; | |
047e0030 | 1073 | adapter->num_q_vectors = 0; |
5536d210 | 1074 | |
02ef6e1d CW |
1075 | while (v_idx--) { |
1076 | igb_reset_q_vector(adapter, v_idx); | |
5536d210 | 1077 | igb_free_q_vector(adapter, v_idx); |
02ef6e1d | 1078 | } |
047e0030 AD |
1079 | } |
1080 | ||
1081 | /** | |
b980ac18 JK |
1082 | * igb_clear_interrupt_scheme - reset the device to a state of no interrupts |
1083 | * @adapter: board private structure to initialize | |
047e0030 | 1084 | * |
b980ac18 JK |
1085 | * This function resets the device so that it has 0 Rx queues, Tx queues, and |
1086 | * MSI-X interrupts allocated. | |
047e0030 AD |
1087 | */ |
1088 | static void igb_clear_interrupt_scheme(struct igb_adapter *adapter) | |
1089 | { | |
047e0030 AD |
1090 | igb_free_q_vectors(adapter); |
1091 | igb_reset_interrupt_capability(adapter); | |
1092 | } | |
9d5c8243 AK |
1093 | |
1094 | /** | |
b980ac18 JK |
1095 | * igb_set_interrupt_capability - set MSI or MSI-X if supported |
1096 | * @adapter: board private structure to initialize | |
1097 | * @msix: boolean value of MSIX capability | |
9d5c8243 | 1098 | * |
b980ac18 JK |
1099 | * Attempt to configure interrupts using the best available |
1100 | * capabilities of the hardware and kernel. | |
9d5c8243 | 1101 | **/ |
53c7d064 | 1102 | static void igb_set_interrupt_capability(struct igb_adapter *adapter, bool msix) |
9d5c8243 AK |
1103 | { |
1104 | int err; | |
1105 | int numvecs, i; | |
1106 | ||
53c7d064 SA |
1107 | if (!msix) |
1108 | goto msi_only; | |
cd14ef54 | 1109 | adapter->flags |= IGB_FLAG_HAS_MSIX; |
53c7d064 | 1110 | |
83b7180d | 1111 | /* Number of supported queues. */ |
a99955fc | 1112 | adapter->num_rx_queues = adapter->rss_queues; |
5fa8517f GR |
1113 | if (adapter->vfs_allocated_count) |
1114 | adapter->num_tx_queues = 1; | |
1115 | else | |
1116 | adapter->num_tx_queues = adapter->rss_queues; | |
83b7180d | 1117 | |
b980ac18 | 1118 | /* start with one vector for every Rx queue */ |
047e0030 AD |
1119 | numvecs = adapter->num_rx_queues; |
1120 | ||
b980ac18 | 1121 | /* if Tx handler is separate add 1 for every Tx queue */ |
a99955fc AD |
1122 | if (!(adapter->flags & IGB_FLAG_QUEUE_PAIRS)) |
1123 | numvecs += adapter->num_tx_queues; | |
047e0030 AD |
1124 | |
1125 | /* store the number of vectors reserved for queues */ | |
1126 | adapter->num_q_vectors = numvecs; | |
1127 | ||
1128 | /* add 1 vector for link status interrupts */ | |
1129 | numvecs++; | |
9d5c8243 AK |
1130 | for (i = 0; i < numvecs; i++) |
1131 | adapter->msix_entries[i].entry = i; | |
1132 | ||
479d02df AG |
1133 | err = pci_enable_msix_range(adapter->pdev, |
1134 | adapter->msix_entries, | |
1135 | numvecs, | |
1136 | numvecs); | |
1137 | if (err > 0) | |
0c2cc02e | 1138 | return; |
9d5c8243 AK |
1139 | |
1140 | igb_reset_interrupt_capability(adapter); | |
1141 | ||
1142 | /* If we can't do MSI-X, try MSI */ | |
1143 | msi_only: | |
b709323d | 1144 | adapter->flags &= ~IGB_FLAG_HAS_MSIX; |
2a3abf6d AD |
1145 | #ifdef CONFIG_PCI_IOV |
1146 | /* disable SR-IOV for non MSI-X configurations */ | |
1147 | if (adapter->vf_data) { | |
1148 | struct e1000_hw *hw = &adapter->hw; | |
1149 | /* disable iov and allow time for transactions to clear */ | |
1150 | pci_disable_sriov(adapter->pdev); | |
1151 | msleep(500); | |
1152 | ||
1153 | kfree(adapter->vf_data); | |
1154 | adapter->vf_data = NULL; | |
1155 | wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ); | |
945a5151 | 1156 | wrfl(); |
2a3abf6d AD |
1157 | msleep(100); |
1158 | dev_info(&adapter->pdev->dev, "IOV Disabled\n"); | |
1159 | } | |
1160 | #endif | |
4fc82adf | 1161 | adapter->vfs_allocated_count = 0; |
a99955fc | 1162 | adapter->rss_queues = 1; |
4fc82adf | 1163 | adapter->flags |= IGB_FLAG_QUEUE_PAIRS; |
9d5c8243 | 1164 | adapter->num_rx_queues = 1; |
661086df | 1165 | adapter->num_tx_queues = 1; |
047e0030 | 1166 | adapter->num_q_vectors = 1; |
9d5c8243 | 1167 | if (!pci_enable_msi(adapter->pdev)) |
7dfc16fa | 1168 | adapter->flags |= IGB_FLAG_HAS_MSI; |
9d5c8243 AK |
1169 | } |
1170 | ||
5536d210 AD |
1171 | static void igb_add_ring(struct igb_ring *ring, |
1172 | struct igb_ring_container *head) | |
1173 | { | |
1174 | head->ring = ring; | |
1175 | head->count++; | |
1176 | } | |
1177 | ||
047e0030 | 1178 | /** |
b980ac18 JK |
1179 | * igb_alloc_q_vector - Allocate memory for a single interrupt vector |
1180 | * @adapter: board private structure to initialize | |
1181 | * @v_count: q_vectors allocated on adapter, used for ring interleaving | |
1182 | * @v_idx: index of vector in adapter struct | |
1183 | * @txr_count: total number of Tx rings to allocate | |
1184 | * @txr_idx: index of first Tx ring to allocate | |
1185 | * @rxr_count: total number of Rx rings to allocate | |
1186 | * @rxr_idx: index of first Rx ring to allocate | |
047e0030 | 1187 | * |
b980ac18 | 1188 | * We allocate one q_vector. If allocation fails we return -ENOMEM. |
047e0030 | 1189 | **/ |
5536d210 AD |
1190 | static int igb_alloc_q_vector(struct igb_adapter *adapter, |
1191 | int v_count, int v_idx, | |
1192 | int txr_count, int txr_idx, | |
1193 | int rxr_count, int rxr_idx) | |
047e0030 AD |
1194 | { |
1195 | struct igb_q_vector *q_vector; | |
5536d210 AD |
1196 | struct igb_ring *ring; |
1197 | int ring_count, size; | |
047e0030 | 1198 | |
5536d210 AD |
1199 | /* igb only supports 1 Tx and/or 1 Rx queue per vector */ |
1200 | if (txr_count > 1 || rxr_count > 1) | |
1201 | return -ENOMEM; | |
1202 | ||
1203 | ring_count = txr_count + rxr_count; | |
1204 | size = sizeof(struct igb_q_vector) + | |
1205 | (sizeof(struct igb_ring) * ring_count); | |
1206 | ||
1207 | /* allocate q_vector and rings */ | |
02ef6e1d CW |
1208 | q_vector = adapter->q_vector[v_idx]; |
1209 | if (!q_vector) | |
1210 | q_vector = kzalloc(size, GFP_KERNEL); | |
5536d210 AD |
1211 | if (!q_vector) |
1212 | return -ENOMEM; | |
1213 | ||
1214 | /* initialize NAPI */ | |
1215 | netif_napi_add(adapter->netdev, &q_vector->napi, | |
1216 | igb_poll, 64); | |
1217 | ||
1218 | /* tie q_vector and adapter together */ | |
1219 | adapter->q_vector[v_idx] = q_vector; | |
1220 | q_vector->adapter = adapter; | |
1221 | ||
1222 | /* initialize work limits */ | |
1223 | q_vector->tx.work_limit = adapter->tx_work_limit; | |
1224 | ||
1225 | /* initialize ITR configuration */ | |
1226 | q_vector->itr_register = adapter->hw.hw_addr + E1000_EITR(0); | |
1227 | q_vector->itr_val = IGB_START_ITR; | |
1228 | ||
1229 | /* initialize pointer to rings */ | |
1230 | ring = q_vector->ring; | |
1231 | ||
4e227667 AD |
1232 | /* intialize ITR */ |
1233 | if (rxr_count) { | |
1234 | /* rx or rx/tx vector */ | |
1235 | if (!adapter->rx_itr_setting || adapter->rx_itr_setting > 3) | |
1236 | q_vector->itr_val = adapter->rx_itr_setting; | |
1237 | } else { | |
1238 | /* tx only vector */ | |
1239 | if (!adapter->tx_itr_setting || adapter->tx_itr_setting > 3) | |
1240 | q_vector->itr_val = adapter->tx_itr_setting; | |
1241 | } | |
1242 | ||
5536d210 AD |
1243 | if (txr_count) { |
1244 | /* assign generic ring traits */ | |
1245 | ring->dev = &adapter->pdev->dev; | |
1246 | ring->netdev = adapter->netdev; | |
1247 | ||
1248 | /* configure backlink on ring */ | |
1249 | ring->q_vector = q_vector; | |
1250 | ||
1251 | /* update q_vector Tx values */ | |
1252 | igb_add_ring(ring, &q_vector->tx); | |
1253 | ||
1254 | /* For 82575, context index must be unique per ring. */ | |
1255 | if (adapter->hw.mac.type == e1000_82575) | |
1256 | set_bit(IGB_RING_FLAG_TX_CTX_IDX, &ring->flags); | |
1257 | ||
1258 | /* apply Tx specific ring traits */ | |
1259 | ring->count = adapter->tx_ring_count; | |
1260 | ring->queue_index = txr_idx; | |
1261 | ||
827da44c JS |
1262 | u64_stats_init(&ring->tx_syncp); |
1263 | u64_stats_init(&ring->tx_syncp2); | |
1264 | ||
5536d210 AD |
1265 | /* assign ring to adapter */ |
1266 | adapter->tx_ring[txr_idx] = ring; | |
1267 | ||
1268 | /* push pointer to next ring */ | |
1269 | ring++; | |
047e0030 | 1270 | } |
81c2fc22 | 1271 | |
5536d210 AD |
1272 | if (rxr_count) { |
1273 | /* assign generic ring traits */ | |
1274 | ring->dev = &adapter->pdev->dev; | |
1275 | ring->netdev = adapter->netdev; | |
047e0030 | 1276 | |
5536d210 AD |
1277 | /* configure backlink on ring */ |
1278 | ring->q_vector = q_vector; | |
047e0030 | 1279 | |
5536d210 AD |
1280 | /* update q_vector Rx values */ |
1281 | igb_add_ring(ring, &q_vector->rx); | |
047e0030 | 1282 | |
5536d210 AD |
1283 | /* set flag indicating ring supports SCTP checksum offload */ |
1284 | if (adapter->hw.mac.type >= e1000_82576) | |
1285 | set_bit(IGB_RING_FLAG_RX_SCTP_CSUM, &ring->flags); | |
047e0030 | 1286 | |
e52c0f96 | 1287 | /* On i350, i354, i210, and i211, loopback VLAN packets |
5536d210 | 1288 | * have the tag byte-swapped. |
b980ac18 | 1289 | */ |
5536d210 AD |
1290 | if (adapter->hw.mac.type >= e1000_i350) |
1291 | set_bit(IGB_RING_FLAG_RX_LB_VLAN_BSWAP, &ring->flags); | |
047e0030 | 1292 | |
5536d210 AD |
1293 | /* apply Rx specific ring traits */ |
1294 | ring->count = adapter->rx_ring_count; | |
1295 | ring->queue_index = rxr_idx; | |
1296 | ||
827da44c JS |
1297 | u64_stats_init(&ring->rx_syncp); |
1298 | ||
5536d210 AD |
1299 | /* assign ring to adapter */ |
1300 | adapter->rx_ring[rxr_idx] = ring; | |
1301 | } | |
1302 | ||
1303 | return 0; | |
047e0030 AD |
1304 | } |
1305 | ||
5536d210 | 1306 | |
047e0030 | 1307 | /** |
b980ac18 JK |
1308 | * igb_alloc_q_vectors - Allocate memory for interrupt vectors |
1309 | * @adapter: board private structure to initialize | |
047e0030 | 1310 | * |
b980ac18 JK |
1311 | * We allocate one q_vector per queue interrupt. If allocation fails we |
1312 | * return -ENOMEM. | |
047e0030 | 1313 | **/ |
5536d210 | 1314 | static int igb_alloc_q_vectors(struct igb_adapter *adapter) |
047e0030 | 1315 | { |
5536d210 AD |
1316 | int q_vectors = adapter->num_q_vectors; |
1317 | int rxr_remaining = adapter->num_rx_queues; | |
1318 | int txr_remaining = adapter->num_tx_queues; | |
1319 | int rxr_idx = 0, txr_idx = 0, v_idx = 0; | |
1320 | int err; | |
047e0030 | 1321 | |
5536d210 AD |
1322 | if (q_vectors >= (rxr_remaining + txr_remaining)) { |
1323 | for (; rxr_remaining; v_idx++) { | |
1324 | err = igb_alloc_q_vector(adapter, q_vectors, v_idx, | |
1325 | 0, 0, 1, rxr_idx); | |
047e0030 | 1326 | |
5536d210 AD |
1327 | if (err) |
1328 | goto err_out; | |
1329 | ||
1330 | /* update counts and index */ | |
1331 | rxr_remaining--; | |
1332 | rxr_idx++; | |
047e0030 | 1333 | } |
047e0030 | 1334 | } |
5536d210 AD |
1335 | |
1336 | for (; v_idx < q_vectors; v_idx++) { | |
1337 | int rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - v_idx); | |
1338 | int tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - v_idx); | |
9005df38 | 1339 | |
5536d210 AD |
1340 | err = igb_alloc_q_vector(adapter, q_vectors, v_idx, |
1341 | tqpv, txr_idx, rqpv, rxr_idx); | |
1342 | ||
1343 | if (err) | |
1344 | goto err_out; | |
1345 | ||
1346 | /* update counts and index */ | |
1347 | rxr_remaining -= rqpv; | |
1348 | txr_remaining -= tqpv; | |
1349 | rxr_idx++; | |
1350 | txr_idx++; | |
1351 | } | |
1352 | ||
047e0030 | 1353 | return 0; |
5536d210 AD |
1354 | |
1355 | err_out: | |
1356 | adapter->num_tx_queues = 0; | |
1357 | adapter->num_rx_queues = 0; | |
1358 | adapter->num_q_vectors = 0; | |
1359 | ||
1360 | while (v_idx--) | |
1361 | igb_free_q_vector(adapter, v_idx); | |
1362 | ||
1363 | return -ENOMEM; | |
047e0030 AD |
1364 | } |
1365 | ||
1366 | /** | |
b980ac18 JK |
1367 | * igb_init_interrupt_scheme - initialize interrupts, allocate queues/vectors |
1368 | * @adapter: board private structure to initialize | |
1369 | * @msix: boolean value of MSIX capability | |
047e0030 | 1370 | * |
b980ac18 | 1371 | * This function initializes the interrupts and allocates all of the queues. |
047e0030 | 1372 | **/ |
53c7d064 | 1373 | static int igb_init_interrupt_scheme(struct igb_adapter *adapter, bool msix) |
047e0030 AD |
1374 | { |
1375 | struct pci_dev *pdev = adapter->pdev; | |
1376 | int err; | |
1377 | ||
53c7d064 | 1378 | igb_set_interrupt_capability(adapter, msix); |
047e0030 AD |
1379 | |
1380 | err = igb_alloc_q_vectors(adapter); | |
1381 | if (err) { | |
1382 | dev_err(&pdev->dev, "Unable to allocate memory for vectors\n"); | |
1383 | goto err_alloc_q_vectors; | |
1384 | } | |
1385 | ||
5536d210 | 1386 | igb_cache_ring_register(adapter); |
047e0030 AD |
1387 | |
1388 | return 0; | |
5536d210 | 1389 | |
047e0030 AD |
1390 | err_alloc_q_vectors: |
1391 | igb_reset_interrupt_capability(adapter); | |
1392 | return err; | |
1393 | } | |
1394 | ||
9d5c8243 | 1395 | /** |
b980ac18 JK |
1396 | * igb_request_irq - initialize interrupts |
1397 | * @adapter: board private structure to initialize | |
9d5c8243 | 1398 | * |
b980ac18 JK |
1399 | * Attempts to configure interrupts using the best available |
1400 | * capabilities of the hardware and kernel. | |
9d5c8243 AK |
1401 | **/ |
1402 | static int igb_request_irq(struct igb_adapter *adapter) | |
1403 | { | |
1404 | struct net_device *netdev = adapter->netdev; | |
047e0030 | 1405 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
1406 | int err = 0; |
1407 | ||
cd14ef54 | 1408 | if (adapter->flags & IGB_FLAG_HAS_MSIX) { |
9d5c8243 | 1409 | err = igb_request_msix(adapter); |
844290e5 | 1410 | if (!err) |
9d5c8243 | 1411 | goto request_done; |
9d5c8243 | 1412 | /* fall back to MSI */ |
5536d210 AD |
1413 | igb_free_all_tx_resources(adapter); |
1414 | igb_free_all_rx_resources(adapter); | |
53c7d064 | 1415 | |
047e0030 | 1416 | igb_clear_interrupt_scheme(adapter); |
53c7d064 SA |
1417 | err = igb_init_interrupt_scheme(adapter, false); |
1418 | if (err) | |
047e0030 | 1419 | goto request_done; |
53c7d064 | 1420 | |
047e0030 AD |
1421 | igb_setup_all_tx_resources(adapter); |
1422 | igb_setup_all_rx_resources(adapter); | |
53c7d064 | 1423 | igb_configure(adapter); |
9d5c8243 | 1424 | } |
844290e5 | 1425 | |
c74d588e AD |
1426 | igb_assign_vector(adapter->q_vector[0], 0); |
1427 | ||
7dfc16fa | 1428 | if (adapter->flags & IGB_FLAG_HAS_MSI) { |
c74d588e | 1429 | err = request_irq(pdev->irq, igb_intr_msi, 0, |
047e0030 | 1430 | netdev->name, adapter); |
9d5c8243 AK |
1431 | if (!err) |
1432 | goto request_done; | |
047e0030 | 1433 | |
9d5c8243 AK |
1434 | /* fall back to legacy interrupts */ |
1435 | igb_reset_interrupt_capability(adapter); | |
7dfc16fa | 1436 | adapter->flags &= ~IGB_FLAG_HAS_MSI; |
9d5c8243 AK |
1437 | } |
1438 | ||
c74d588e | 1439 | err = request_irq(pdev->irq, igb_intr, IRQF_SHARED, |
047e0030 | 1440 | netdev->name, adapter); |
9d5c8243 | 1441 | |
6cb5e577 | 1442 | if (err) |
c74d588e | 1443 | dev_err(&pdev->dev, "Error %d getting interrupt\n", |
9d5c8243 | 1444 | err); |
9d5c8243 AK |
1445 | |
1446 | request_done: | |
1447 | return err; | |
1448 | } | |
1449 | ||
1450 | static void igb_free_irq(struct igb_adapter *adapter) | |
1451 | { | |
cd14ef54 | 1452 | if (adapter->flags & IGB_FLAG_HAS_MSIX) { |
9d5c8243 AK |
1453 | int vector = 0, i; |
1454 | ||
047e0030 | 1455 | free_irq(adapter->msix_entries[vector++].vector, adapter); |
9d5c8243 | 1456 | |
0d1ae7f4 | 1457 | for (i = 0; i < adapter->num_q_vectors; i++) |
047e0030 | 1458 | free_irq(adapter->msix_entries[vector++].vector, |
0d1ae7f4 | 1459 | adapter->q_vector[i]); |
047e0030 AD |
1460 | } else { |
1461 | free_irq(adapter->pdev->irq, adapter); | |
9d5c8243 | 1462 | } |
9d5c8243 AK |
1463 | } |
1464 | ||
1465 | /** | |
b980ac18 JK |
1466 | * igb_irq_disable - Mask off interrupt generation on the NIC |
1467 | * @adapter: board private structure | |
9d5c8243 AK |
1468 | **/ |
1469 | static void igb_irq_disable(struct igb_adapter *adapter) | |
1470 | { | |
1471 | struct e1000_hw *hw = &adapter->hw; | |
1472 | ||
b980ac18 | 1473 | /* we need to be careful when disabling interrupts. The VFs are also |
25568a53 AD |
1474 | * mapped into these registers and so clearing the bits can cause |
1475 | * issues on the VF drivers so we only need to clear what we set | |
1476 | */ | |
cd14ef54 | 1477 | if (adapter->flags & IGB_FLAG_HAS_MSIX) { |
2dfd1212 | 1478 | u32 regval = rd32(E1000_EIAM); |
9005df38 | 1479 | |
2dfd1212 AD |
1480 | wr32(E1000_EIAM, regval & ~adapter->eims_enable_mask); |
1481 | wr32(E1000_EIMC, adapter->eims_enable_mask); | |
1482 | regval = rd32(E1000_EIAC); | |
1483 | wr32(E1000_EIAC, regval & ~adapter->eims_enable_mask); | |
9d5c8243 | 1484 | } |
844290e5 PW |
1485 | |
1486 | wr32(E1000_IAM, 0); | |
9d5c8243 AK |
1487 | wr32(E1000_IMC, ~0); |
1488 | wrfl(); | |
cd14ef54 | 1489 | if (adapter->flags & IGB_FLAG_HAS_MSIX) { |
81a61859 | 1490 | int i; |
9005df38 | 1491 | |
81a61859 ET |
1492 | for (i = 0; i < adapter->num_q_vectors; i++) |
1493 | synchronize_irq(adapter->msix_entries[i].vector); | |
1494 | } else { | |
1495 | synchronize_irq(adapter->pdev->irq); | |
1496 | } | |
9d5c8243 AK |
1497 | } |
1498 | ||
1499 | /** | |
b980ac18 JK |
1500 | * igb_irq_enable - Enable default interrupt generation settings |
1501 | * @adapter: board private structure | |
9d5c8243 AK |
1502 | **/ |
1503 | static void igb_irq_enable(struct igb_adapter *adapter) | |
1504 | { | |
1505 | struct e1000_hw *hw = &adapter->hw; | |
1506 | ||
cd14ef54 | 1507 | if (adapter->flags & IGB_FLAG_HAS_MSIX) { |
06218a8d | 1508 | u32 ims = E1000_IMS_LSC | E1000_IMS_DOUTSYNC | E1000_IMS_DRSTA; |
2dfd1212 | 1509 | u32 regval = rd32(E1000_EIAC); |
9005df38 | 1510 | |
2dfd1212 AD |
1511 | wr32(E1000_EIAC, regval | adapter->eims_enable_mask); |
1512 | regval = rd32(E1000_EIAM); | |
1513 | wr32(E1000_EIAM, regval | adapter->eims_enable_mask); | |
844290e5 | 1514 | wr32(E1000_EIMS, adapter->eims_enable_mask); |
25568a53 | 1515 | if (adapter->vfs_allocated_count) { |
4ae196df | 1516 | wr32(E1000_MBVFIMR, 0xFF); |
25568a53 AD |
1517 | ims |= E1000_IMS_VMMB; |
1518 | } | |
1519 | wr32(E1000_IMS, ims); | |
844290e5 | 1520 | } else { |
55cac248 AD |
1521 | wr32(E1000_IMS, IMS_ENABLE_MASK | |
1522 | E1000_IMS_DRSTA); | |
1523 | wr32(E1000_IAM, IMS_ENABLE_MASK | | |
1524 | E1000_IMS_DRSTA); | |
844290e5 | 1525 | } |
9d5c8243 AK |
1526 | } |
1527 | ||
1528 | static void igb_update_mng_vlan(struct igb_adapter *adapter) | |
1529 | { | |
51466239 | 1530 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 AK |
1531 | u16 vid = adapter->hw.mng_cookie.vlan_id; |
1532 | u16 old_vid = adapter->mng_vlan_id; | |
51466239 AD |
1533 | |
1534 | if (hw->mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { | |
1535 | /* add VID to filter table */ | |
1536 | igb_vfta_set(hw, vid, true); | |
1537 | adapter->mng_vlan_id = vid; | |
1538 | } else { | |
1539 | adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; | |
1540 | } | |
1541 | ||
1542 | if ((old_vid != (u16)IGB_MNG_VLAN_NONE) && | |
1543 | (vid != old_vid) && | |
b2cb09b1 | 1544 | !test_bit(old_vid, adapter->active_vlans)) { |
51466239 AD |
1545 | /* remove VID from filter table */ |
1546 | igb_vfta_set(hw, old_vid, false); | |
9d5c8243 AK |
1547 | } |
1548 | } | |
1549 | ||
1550 | /** | |
b980ac18 JK |
1551 | * igb_release_hw_control - release control of the h/w to f/w |
1552 | * @adapter: address of board private structure | |
9d5c8243 | 1553 | * |
b980ac18 JK |
1554 | * igb_release_hw_control resets CTRL_EXT:DRV_LOAD bit. |
1555 | * For ASF and Pass Through versions of f/w this means that the | |
1556 | * driver is no longer loaded. | |
9d5c8243 AK |
1557 | **/ |
1558 | static void igb_release_hw_control(struct igb_adapter *adapter) | |
1559 | { | |
1560 | struct e1000_hw *hw = &adapter->hw; | |
1561 | u32 ctrl_ext; | |
1562 | ||
1563 | /* Let firmware take over control of h/w */ | |
1564 | ctrl_ext = rd32(E1000_CTRL_EXT); | |
1565 | wr32(E1000_CTRL_EXT, | |
1566 | ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); | |
1567 | } | |
1568 | ||
9d5c8243 | 1569 | /** |
b980ac18 JK |
1570 | * igb_get_hw_control - get control of the h/w from f/w |
1571 | * @adapter: address of board private structure | |
9d5c8243 | 1572 | * |
b980ac18 JK |
1573 | * igb_get_hw_control sets CTRL_EXT:DRV_LOAD bit. |
1574 | * For ASF and Pass Through versions of f/w this means that | |
1575 | * the driver is loaded. | |
9d5c8243 AK |
1576 | **/ |
1577 | static void igb_get_hw_control(struct igb_adapter *adapter) | |
1578 | { | |
1579 | struct e1000_hw *hw = &adapter->hw; | |
1580 | u32 ctrl_ext; | |
1581 | ||
1582 | /* Let firmware know the driver has taken over */ | |
1583 | ctrl_ext = rd32(E1000_CTRL_EXT); | |
1584 | wr32(E1000_CTRL_EXT, | |
1585 | ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); | |
1586 | } | |
1587 | ||
9d5c8243 | 1588 | /** |
b980ac18 JK |
1589 | * igb_configure - configure the hardware for RX and TX |
1590 | * @adapter: private board structure | |
9d5c8243 AK |
1591 | **/ |
1592 | static void igb_configure(struct igb_adapter *adapter) | |
1593 | { | |
1594 | struct net_device *netdev = adapter->netdev; | |
1595 | int i; | |
1596 | ||
1597 | igb_get_hw_control(adapter); | |
ff41f8dc | 1598 | igb_set_rx_mode(netdev); |
9d5c8243 AK |
1599 | |
1600 | igb_restore_vlan(adapter); | |
9d5c8243 | 1601 | |
85b430b4 | 1602 | igb_setup_tctl(adapter); |
06cf2666 | 1603 | igb_setup_mrqc(adapter); |
9d5c8243 | 1604 | igb_setup_rctl(adapter); |
85b430b4 AD |
1605 | |
1606 | igb_configure_tx(adapter); | |
9d5c8243 | 1607 | igb_configure_rx(adapter); |
662d7205 AD |
1608 | |
1609 | igb_rx_fifo_flush_82575(&adapter->hw); | |
1610 | ||
c493ea45 | 1611 | /* call igb_desc_unused which always leaves |
9d5c8243 | 1612 | * at least 1 descriptor unused to make sure |
b980ac18 JK |
1613 | * next_to_use != next_to_clean |
1614 | */ | |
9d5c8243 | 1615 | for (i = 0; i < adapter->num_rx_queues; i++) { |
3025a446 | 1616 | struct igb_ring *ring = adapter->rx_ring[i]; |
cd392f5c | 1617 | igb_alloc_rx_buffers(ring, igb_desc_unused(ring)); |
9d5c8243 | 1618 | } |
9d5c8243 AK |
1619 | } |
1620 | ||
88a268c1 | 1621 | /** |
b980ac18 JK |
1622 | * igb_power_up_link - Power up the phy/serdes link |
1623 | * @adapter: address of board private structure | |
88a268c1 NN |
1624 | **/ |
1625 | void igb_power_up_link(struct igb_adapter *adapter) | |
1626 | { | |
76886596 AA |
1627 | igb_reset_phy(&adapter->hw); |
1628 | ||
88a268c1 NN |
1629 | if (adapter->hw.phy.media_type == e1000_media_type_copper) |
1630 | igb_power_up_phy_copper(&adapter->hw); | |
1631 | else | |
1632 | igb_power_up_serdes_link_82575(&adapter->hw); | |
1633 | } | |
1634 | ||
1635 | /** | |
b980ac18 JK |
1636 | * igb_power_down_link - Power down the phy/serdes link |
1637 | * @adapter: address of board private structure | |
88a268c1 NN |
1638 | */ |
1639 | static void igb_power_down_link(struct igb_adapter *adapter) | |
1640 | { | |
1641 | if (adapter->hw.phy.media_type == e1000_media_type_copper) | |
1642 | igb_power_down_phy_copper_82575(&adapter->hw); | |
1643 | else | |
1644 | igb_shutdown_serdes_link_82575(&adapter->hw); | |
1645 | } | |
9d5c8243 | 1646 | |
56cec249 CW |
1647 | /** |
1648 | * Detect and switch function for Media Auto Sense | |
1649 | * @adapter: address of the board private structure | |
1650 | **/ | |
1651 | static void igb_check_swap_media(struct igb_adapter *adapter) | |
1652 | { | |
1653 | struct e1000_hw *hw = &adapter->hw; | |
1654 | u32 ctrl_ext, connsw; | |
1655 | bool swap_now = false; | |
1656 | ||
1657 | ctrl_ext = rd32(E1000_CTRL_EXT); | |
1658 | connsw = rd32(E1000_CONNSW); | |
1659 | ||
1660 | /* need to live swap if current media is copper and we have fiber/serdes | |
1661 | * to go to. | |
1662 | */ | |
1663 | ||
1664 | if ((hw->phy.media_type == e1000_media_type_copper) && | |
1665 | (!(connsw & E1000_CONNSW_AUTOSENSE_EN))) { | |
1666 | swap_now = true; | |
1667 | } else if (!(connsw & E1000_CONNSW_SERDESD)) { | |
1668 | /* copper signal takes time to appear */ | |
1669 | if (adapter->copper_tries < 4) { | |
1670 | adapter->copper_tries++; | |
1671 | connsw |= E1000_CONNSW_AUTOSENSE_CONF; | |
1672 | wr32(E1000_CONNSW, connsw); | |
1673 | return; | |
1674 | } else { | |
1675 | adapter->copper_tries = 0; | |
1676 | if ((connsw & E1000_CONNSW_PHYSD) && | |
1677 | (!(connsw & E1000_CONNSW_PHY_PDN))) { | |
1678 | swap_now = true; | |
1679 | connsw &= ~E1000_CONNSW_AUTOSENSE_CONF; | |
1680 | wr32(E1000_CONNSW, connsw); | |
1681 | } | |
1682 | } | |
1683 | } | |
1684 | ||
1685 | if (!swap_now) | |
1686 | return; | |
1687 | ||
1688 | switch (hw->phy.media_type) { | |
1689 | case e1000_media_type_copper: | |
1690 | netdev_info(adapter->netdev, | |
1691 | "MAS: changing media to fiber/serdes\n"); | |
1692 | ctrl_ext |= | |
1693 | E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES; | |
1694 | adapter->flags |= IGB_FLAG_MEDIA_RESET; | |
1695 | adapter->copper_tries = 0; | |
1696 | break; | |
1697 | case e1000_media_type_internal_serdes: | |
1698 | case e1000_media_type_fiber: | |
1699 | netdev_info(adapter->netdev, | |
1700 | "MAS: changing media to copper\n"); | |
1701 | ctrl_ext &= | |
1702 | ~E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES; | |
1703 | adapter->flags |= IGB_FLAG_MEDIA_RESET; | |
1704 | break; | |
1705 | default: | |
1706 | /* shouldn't get here during regular operation */ | |
1707 | netdev_err(adapter->netdev, | |
1708 | "AMS: Invalid media type found, returning\n"); | |
1709 | break; | |
1710 | } | |
1711 | wr32(E1000_CTRL_EXT, ctrl_ext); | |
1712 | } | |
1713 | ||
9d5c8243 | 1714 | /** |
b980ac18 JK |
1715 | * igb_up - Open the interface and prepare it to handle traffic |
1716 | * @adapter: board private structure | |
9d5c8243 | 1717 | **/ |
9d5c8243 AK |
1718 | int igb_up(struct igb_adapter *adapter) |
1719 | { | |
1720 | struct e1000_hw *hw = &adapter->hw; | |
1721 | int i; | |
1722 | ||
1723 | /* hardware has been reset, we need to reload some things */ | |
1724 | igb_configure(adapter); | |
1725 | ||
1726 | clear_bit(__IGB_DOWN, &adapter->state); | |
1727 | ||
0d1ae7f4 AD |
1728 | for (i = 0; i < adapter->num_q_vectors; i++) |
1729 | napi_enable(&(adapter->q_vector[i]->napi)); | |
1730 | ||
cd14ef54 | 1731 | if (adapter->flags & IGB_FLAG_HAS_MSIX) |
9d5c8243 | 1732 | igb_configure_msix(adapter); |
feeb2721 AD |
1733 | else |
1734 | igb_assign_vector(adapter->q_vector[0], 0); | |
9d5c8243 AK |
1735 | |
1736 | /* Clear any pending interrupts. */ | |
1737 | rd32(E1000_ICR); | |
1738 | igb_irq_enable(adapter); | |
1739 | ||
d4960307 AD |
1740 | /* notify VFs that reset has been completed */ |
1741 | if (adapter->vfs_allocated_count) { | |
1742 | u32 reg_data = rd32(E1000_CTRL_EXT); | |
9005df38 | 1743 | |
d4960307 AD |
1744 | reg_data |= E1000_CTRL_EXT_PFRSTD; |
1745 | wr32(E1000_CTRL_EXT, reg_data); | |
1746 | } | |
1747 | ||
4cb9be7a JB |
1748 | netif_tx_start_all_queues(adapter->netdev); |
1749 | ||
25568a53 AD |
1750 | /* start the watchdog. */ |
1751 | hw->mac.get_link_status = 1; | |
1752 | schedule_work(&adapter->watchdog_task); | |
1753 | ||
f4c01e96 CW |
1754 | if ((adapter->flags & IGB_FLAG_EEE) && |
1755 | (!hw->dev_spec._82575.eee_disable)) | |
1756 | adapter->eee_advert = MDIO_EEE_100TX | MDIO_EEE_1000T; | |
1757 | ||
9d5c8243 AK |
1758 | return 0; |
1759 | } | |
1760 | ||
1761 | void igb_down(struct igb_adapter *adapter) | |
1762 | { | |
9d5c8243 | 1763 | struct net_device *netdev = adapter->netdev; |
330a6d6a | 1764 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 AK |
1765 | u32 tctl, rctl; |
1766 | int i; | |
1767 | ||
1768 | /* signal that we're down so the interrupt handler does not | |
b980ac18 JK |
1769 | * reschedule our watchdog timer |
1770 | */ | |
9d5c8243 AK |
1771 | set_bit(__IGB_DOWN, &adapter->state); |
1772 | ||
1773 | /* disable receives in the hardware */ | |
1774 | rctl = rd32(E1000_RCTL); | |
1775 | wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN); | |
1776 | /* flush and sleep below */ | |
1777 | ||
fd2ea0a7 | 1778 | netif_tx_stop_all_queues(netdev); |
9d5c8243 AK |
1779 | |
1780 | /* disable transmits in the hardware */ | |
1781 | tctl = rd32(E1000_TCTL); | |
1782 | tctl &= ~E1000_TCTL_EN; | |
1783 | wr32(E1000_TCTL, tctl); | |
1784 | /* flush both disables and wait for them to finish */ | |
1785 | wrfl(); | |
0d451e79 | 1786 | usleep_range(10000, 11000); |
9d5c8243 | 1787 | |
41f149a2 CW |
1788 | igb_irq_disable(adapter); |
1789 | ||
aa9b8cc4 AA |
1790 | adapter->flags &= ~IGB_FLAG_NEED_LINK_UPDATE; |
1791 | ||
41f149a2 CW |
1792 | for (i = 0; i < adapter->num_q_vectors; i++) { |
1793 | napi_synchronize(&(adapter->q_vector[i]->napi)); | |
0d1ae7f4 | 1794 | napi_disable(&(adapter->q_vector[i]->napi)); |
41f149a2 | 1795 | } |
9d5c8243 | 1796 | |
9d5c8243 AK |
1797 | |
1798 | del_timer_sync(&adapter->watchdog_timer); | |
1799 | del_timer_sync(&adapter->phy_info_timer); | |
1800 | ||
9d5c8243 | 1801 | netif_carrier_off(netdev); |
04fe6358 AD |
1802 | |
1803 | /* record the stats before reset*/ | |
12dcd86b ED |
1804 | spin_lock(&adapter->stats64_lock); |
1805 | igb_update_stats(adapter, &adapter->stats64); | |
1806 | spin_unlock(&adapter->stats64_lock); | |
04fe6358 | 1807 | |
9d5c8243 AK |
1808 | adapter->link_speed = 0; |
1809 | adapter->link_duplex = 0; | |
1810 | ||
3023682e JK |
1811 | if (!pci_channel_offline(adapter->pdev)) |
1812 | igb_reset(adapter); | |
9d5c8243 AK |
1813 | igb_clean_all_tx_rings(adapter); |
1814 | igb_clean_all_rx_rings(adapter); | |
7e0e99ef AD |
1815 | #ifdef CONFIG_IGB_DCA |
1816 | ||
1817 | /* since we reset the hardware DCA settings were cleared */ | |
1818 | igb_setup_dca(adapter); | |
1819 | #endif | |
9d5c8243 AK |
1820 | } |
1821 | ||
1822 | void igb_reinit_locked(struct igb_adapter *adapter) | |
1823 | { | |
1824 | WARN_ON(in_interrupt()); | |
1825 | while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) | |
0d451e79 | 1826 | usleep_range(1000, 2000); |
9d5c8243 AK |
1827 | igb_down(adapter); |
1828 | igb_up(adapter); | |
1829 | clear_bit(__IGB_RESETTING, &adapter->state); | |
1830 | } | |
1831 | ||
56cec249 CW |
1832 | /** igb_enable_mas - Media Autosense re-enable after swap |
1833 | * | |
1834 | * @adapter: adapter struct | |
1835 | **/ | |
1836 | static s32 igb_enable_mas(struct igb_adapter *adapter) | |
1837 | { | |
1838 | struct e1000_hw *hw = &adapter->hw; | |
1839 | u32 connsw; | |
1840 | s32 ret_val = 0; | |
1841 | ||
1842 | connsw = rd32(E1000_CONNSW); | |
1843 | if (!(hw->phy.media_type == e1000_media_type_copper)) | |
1844 | return ret_val; | |
1845 | ||
1846 | /* configure for SerDes media detect */ | |
1847 | if (!(connsw & E1000_CONNSW_SERDESD)) { | |
1848 | connsw |= E1000_CONNSW_ENRGSRC; | |
1849 | connsw |= E1000_CONNSW_AUTOSENSE_EN; | |
1850 | wr32(E1000_CONNSW, connsw); | |
1851 | wrfl(); | |
1852 | } else if (connsw & E1000_CONNSW_SERDESD) { | |
1853 | /* already SerDes, no need to enable anything */ | |
1854 | return ret_val; | |
1855 | } else { | |
1856 | netdev_info(adapter->netdev, | |
1857 | "MAS: Unable to configure feature, disabling..\n"); | |
1858 | adapter->flags &= ~IGB_FLAG_MAS_ENABLE; | |
1859 | } | |
1860 | return ret_val; | |
1861 | } | |
1862 | ||
9d5c8243 AK |
1863 | void igb_reset(struct igb_adapter *adapter) |
1864 | { | |
090b1795 | 1865 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 | 1866 | struct e1000_hw *hw = &adapter->hw; |
2d064c06 AD |
1867 | struct e1000_mac_info *mac = &hw->mac; |
1868 | struct e1000_fc_info *fc = &hw->fc; | |
d48507fe | 1869 | u32 pba = 0, tx_space, min_tx_space, min_rx_space, hwm; |
9d5c8243 AK |
1870 | |
1871 | /* Repartition Pba for greater than 9k mtu | |
1872 | * To take effect CTRL.RST is required. | |
1873 | */ | |
fa4dfae0 | 1874 | switch (mac->type) { |
d2ba2ed8 | 1875 | case e1000_i350: |
ceb5f13b | 1876 | case e1000_i354: |
55cac248 AD |
1877 | case e1000_82580: |
1878 | pba = rd32(E1000_RXPBS); | |
1879 | pba = igb_rxpbs_adjust_82580(pba); | |
1880 | break; | |
fa4dfae0 | 1881 | case e1000_82576: |
d249be54 AD |
1882 | pba = rd32(E1000_RXPBS); |
1883 | pba &= E1000_RXPBS_SIZE_MASK_82576; | |
fa4dfae0 AD |
1884 | break; |
1885 | case e1000_82575: | |
f96a8a0b CW |
1886 | case e1000_i210: |
1887 | case e1000_i211: | |
fa4dfae0 AD |
1888 | default: |
1889 | pba = E1000_PBA_34K; | |
1890 | break; | |
2d064c06 | 1891 | } |
9d5c8243 | 1892 | |
2d064c06 AD |
1893 | if ((adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) && |
1894 | (mac->type < e1000_82576)) { | |
9d5c8243 AK |
1895 | /* adjust PBA for jumbo frames */ |
1896 | wr32(E1000_PBA, pba); | |
1897 | ||
1898 | /* To maintain wire speed transmits, the Tx FIFO should be | |
1899 | * large enough to accommodate two full transmit packets, | |
1900 | * rounded up to the next 1KB and expressed in KB. Likewise, | |
1901 | * the Rx FIFO should be large enough to accommodate at least | |
1902 | * one full receive packet and is similarly rounded up and | |
b980ac18 JK |
1903 | * expressed in KB. |
1904 | */ | |
9d5c8243 AK |
1905 | pba = rd32(E1000_PBA); |
1906 | /* upper 16 bits has Tx packet buffer allocation size in KB */ | |
1907 | tx_space = pba >> 16; | |
1908 | /* lower 16 bits has Rx packet buffer allocation size in KB */ | |
1909 | pba &= 0xffff; | |
b980ac18 JK |
1910 | /* the Tx fifo also stores 16 bytes of information about the Tx |
1911 | * but don't include ethernet FCS because hardware appends it | |
1912 | */ | |
9d5c8243 | 1913 | min_tx_space = (adapter->max_frame_size + |
85e8d004 | 1914 | sizeof(union e1000_adv_tx_desc) - |
9d5c8243 AK |
1915 | ETH_FCS_LEN) * 2; |
1916 | min_tx_space = ALIGN(min_tx_space, 1024); | |
1917 | min_tx_space >>= 10; | |
1918 | /* software strips receive CRC, so leave room for it */ | |
1919 | min_rx_space = adapter->max_frame_size; | |
1920 | min_rx_space = ALIGN(min_rx_space, 1024); | |
1921 | min_rx_space >>= 10; | |
1922 | ||
1923 | /* If current Tx allocation is less than the min Tx FIFO size, | |
1924 | * and the min Tx FIFO size is less than the current Rx FIFO | |
b980ac18 JK |
1925 | * allocation, take space away from current Rx allocation |
1926 | */ | |
9d5c8243 AK |
1927 | if (tx_space < min_tx_space && |
1928 | ((min_tx_space - tx_space) < pba)) { | |
1929 | pba = pba - (min_tx_space - tx_space); | |
1930 | ||
b980ac18 JK |
1931 | /* if short on Rx space, Rx wins and must trump Tx |
1932 | * adjustment | |
1933 | */ | |
9d5c8243 AK |
1934 | if (pba < min_rx_space) |
1935 | pba = min_rx_space; | |
1936 | } | |
2d064c06 | 1937 | wr32(E1000_PBA, pba); |
9d5c8243 | 1938 | } |
9d5c8243 AK |
1939 | |
1940 | /* flow control settings */ | |
1941 | /* The high water mark must be low enough to fit one full frame | |
1942 | * (or the size used for early receive) above it in the Rx FIFO. | |
1943 | * Set it to the lower of: | |
1944 | * - 90% of the Rx FIFO size, or | |
b980ac18 JK |
1945 | * - the full Rx FIFO size minus one full frame |
1946 | */ | |
9d5c8243 | 1947 | hwm = min(((pba << 10) * 9 / 10), |
2d064c06 | 1948 | ((pba << 10) - 2 * adapter->max_frame_size)); |
9d5c8243 | 1949 | |
d48507fe | 1950 | fc->high_water = hwm & 0xFFFFFFF0; /* 16-byte granularity */ |
d405ea3e | 1951 | fc->low_water = fc->high_water - 16; |
9d5c8243 AK |
1952 | fc->pause_time = 0xFFFF; |
1953 | fc->send_xon = 1; | |
0cce119a | 1954 | fc->current_mode = fc->requested_mode; |
9d5c8243 | 1955 | |
4ae196df AD |
1956 | /* disable receive for all VFs and wait one second */ |
1957 | if (adapter->vfs_allocated_count) { | |
1958 | int i; | |
9005df38 | 1959 | |
4ae196df | 1960 | for (i = 0 ; i < adapter->vfs_allocated_count; i++) |
8fa7e0f7 | 1961 | adapter->vf_data[i].flags &= IGB_VF_FLAG_PF_SET_MAC; |
4ae196df AD |
1962 | |
1963 | /* ping all the active vfs to let them know we are going down */ | |
f2ca0dbe | 1964 | igb_ping_all_vfs(adapter); |
4ae196df AD |
1965 | |
1966 | /* disable transmits and receives */ | |
1967 | wr32(E1000_VFRE, 0); | |
1968 | wr32(E1000_VFTE, 0); | |
1969 | } | |
1970 | ||
9d5c8243 | 1971 | /* Allow time for pending master requests to run */ |
330a6d6a | 1972 | hw->mac.ops.reset_hw(hw); |
9d5c8243 AK |
1973 | wr32(E1000_WUC, 0); |
1974 | ||
56cec249 CW |
1975 | if (adapter->flags & IGB_FLAG_MEDIA_RESET) { |
1976 | /* need to resetup here after media swap */ | |
1977 | adapter->ei.get_invariants(hw); | |
1978 | adapter->flags &= ~IGB_FLAG_MEDIA_RESET; | |
1979 | } | |
1980 | if (adapter->flags & IGB_FLAG_MAS_ENABLE) { | |
1981 | if (igb_enable_mas(adapter)) | |
1982 | dev_err(&pdev->dev, | |
1983 | "Error enabling Media Auto Sense\n"); | |
1984 | } | |
330a6d6a | 1985 | if (hw->mac.ops.init_hw(hw)) |
090b1795 | 1986 | dev_err(&pdev->dev, "Hardware Error\n"); |
831ec0b4 | 1987 | |
b980ac18 | 1988 | /* Flow control settings reset on hardware reset, so guarantee flow |
a27416bb MV |
1989 | * control is off when forcing speed. |
1990 | */ | |
1991 | if (!hw->mac.autoneg) | |
1992 | igb_force_mac_fc(hw); | |
1993 | ||
b6e0c419 | 1994 | igb_init_dmac(adapter, pba); |
e428893b CW |
1995 | #ifdef CONFIG_IGB_HWMON |
1996 | /* Re-initialize the thermal sensor on i350 devices. */ | |
1997 | if (!test_bit(__IGB_DOWN, &adapter->state)) { | |
1998 | if (mac->type == e1000_i350 && hw->bus.func == 0) { | |
1999 | /* If present, re-initialize the external thermal sensor | |
2000 | * interface. | |
2001 | */ | |
2002 | if (adapter->ets) | |
2003 | mac->ops.init_thermal_sensor_thresh(hw); | |
2004 | } | |
2005 | } | |
2006 | #endif | |
b936136d | 2007 | /* Re-establish EEE setting */ |
f4c01e96 CW |
2008 | if (hw->phy.media_type == e1000_media_type_copper) { |
2009 | switch (mac->type) { | |
2010 | case e1000_i350: | |
2011 | case e1000_i210: | |
2012 | case e1000_i211: | |
2013 | igb_set_eee_i350(hw); | |
2014 | break; | |
2015 | case e1000_i354: | |
2016 | igb_set_eee_i354(hw); | |
2017 | break; | |
2018 | default: | |
2019 | break; | |
2020 | } | |
2021 | } | |
88a268c1 NN |
2022 | if (!netif_running(adapter->netdev)) |
2023 | igb_power_down_link(adapter); | |
2024 | ||
9d5c8243 AK |
2025 | igb_update_mng_vlan(adapter); |
2026 | ||
2027 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ | |
2028 | wr32(E1000_VET, ETHERNET_IEEE_VLAN_TYPE); | |
2029 | ||
1f6e8178 MV |
2030 | /* Re-enable PTP, where applicable. */ |
2031 | igb_ptp_reset(adapter); | |
1f6e8178 | 2032 | |
330a6d6a | 2033 | igb_get_phy_info(hw); |
9d5c8243 AK |
2034 | } |
2035 | ||
c8f44aff MM |
2036 | static netdev_features_t igb_fix_features(struct net_device *netdev, |
2037 | netdev_features_t features) | |
b2cb09b1 | 2038 | { |
b980ac18 JK |
2039 | /* Since there is no support for separate Rx/Tx vlan accel |
2040 | * enable/disable make sure Tx flag is always in same state as Rx. | |
b2cb09b1 | 2041 | */ |
f646968f PM |
2042 | if (features & NETIF_F_HW_VLAN_CTAG_RX) |
2043 | features |= NETIF_F_HW_VLAN_CTAG_TX; | |
b2cb09b1 | 2044 | else |
f646968f | 2045 | features &= ~NETIF_F_HW_VLAN_CTAG_TX; |
b2cb09b1 JP |
2046 | |
2047 | return features; | |
2048 | } | |
2049 | ||
c8f44aff MM |
2050 | static int igb_set_features(struct net_device *netdev, |
2051 | netdev_features_t features) | |
ac52caa3 | 2052 | { |
c8f44aff | 2053 | netdev_features_t changed = netdev->features ^ features; |
89eaefb6 | 2054 | struct igb_adapter *adapter = netdev_priv(netdev); |
ac52caa3 | 2055 | |
f646968f | 2056 | if (changed & NETIF_F_HW_VLAN_CTAG_RX) |
b2cb09b1 JP |
2057 | igb_vlan_mode(netdev, features); |
2058 | ||
89eaefb6 BG |
2059 | if (!(changed & NETIF_F_RXALL)) |
2060 | return 0; | |
2061 | ||
2062 | netdev->features = features; | |
2063 | ||
2064 | if (netif_running(netdev)) | |
2065 | igb_reinit_locked(adapter); | |
2066 | else | |
2067 | igb_reset(adapter); | |
2068 | ||
ac52caa3 MM |
2069 | return 0; |
2070 | } | |
2071 | ||
2e5c6922 | 2072 | static const struct net_device_ops igb_netdev_ops = { |
559e9c49 | 2073 | .ndo_open = igb_open, |
2e5c6922 | 2074 | .ndo_stop = igb_close, |
cd392f5c | 2075 | .ndo_start_xmit = igb_xmit_frame, |
12dcd86b | 2076 | .ndo_get_stats64 = igb_get_stats64, |
ff41f8dc | 2077 | .ndo_set_rx_mode = igb_set_rx_mode, |
2e5c6922 SH |
2078 | .ndo_set_mac_address = igb_set_mac, |
2079 | .ndo_change_mtu = igb_change_mtu, | |
2080 | .ndo_do_ioctl = igb_ioctl, | |
2081 | .ndo_tx_timeout = igb_tx_timeout, | |
2082 | .ndo_validate_addr = eth_validate_addr, | |
2e5c6922 SH |
2083 | .ndo_vlan_rx_add_vid = igb_vlan_rx_add_vid, |
2084 | .ndo_vlan_rx_kill_vid = igb_vlan_rx_kill_vid, | |
8151d294 WM |
2085 | .ndo_set_vf_mac = igb_ndo_set_vf_mac, |
2086 | .ndo_set_vf_vlan = igb_ndo_set_vf_vlan, | |
ed616689 | 2087 | .ndo_set_vf_rate = igb_ndo_set_vf_bw, |
70ea4783 | 2088 | .ndo_set_vf_spoofchk = igb_ndo_set_vf_spoofchk, |
8151d294 | 2089 | .ndo_get_vf_config = igb_ndo_get_vf_config, |
2e5c6922 SH |
2090 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2091 | .ndo_poll_controller = igb_netpoll, | |
2092 | #endif | |
b2cb09b1 JP |
2093 | .ndo_fix_features = igb_fix_features, |
2094 | .ndo_set_features = igb_set_features, | |
2e5c6922 SH |
2095 | }; |
2096 | ||
d67974f0 CW |
2097 | /** |
2098 | * igb_set_fw_version - Configure version string for ethtool | |
2099 | * @adapter: adapter struct | |
d67974f0 CW |
2100 | **/ |
2101 | void igb_set_fw_version(struct igb_adapter *adapter) | |
2102 | { | |
2103 | struct e1000_hw *hw = &adapter->hw; | |
0b1a6f2e CW |
2104 | struct e1000_fw_version fw; |
2105 | ||
2106 | igb_get_fw_version(hw, &fw); | |
2107 | ||
2108 | switch (hw->mac.type) { | |
7dc98a62 | 2109 | case e1000_i210: |
0b1a6f2e | 2110 | case e1000_i211: |
7dc98a62 CW |
2111 | if (!(igb_get_flash_presence_i210(hw))) { |
2112 | snprintf(adapter->fw_version, | |
2113 | sizeof(adapter->fw_version), | |
2114 | "%2d.%2d-%d", | |
2115 | fw.invm_major, fw.invm_minor, | |
2116 | fw.invm_img_type); | |
2117 | break; | |
2118 | } | |
2119 | /* fall through */ | |
0b1a6f2e CW |
2120 | default: |
2121 | /* if option is rom valid, display its version too */ | |
2122 | if (fw.or_valid) { | |
2123 | snprintf(adapter->fw_version, | |
2124 | sizeof(adapter->fw_version), | |
2125 | "%d.%d, 0x%08x, %d.%d.%d", | |
2126 | fw.eep_major, fw.eep_minor, fw.etrack_id, | |
2127 | fw.or_major, fw.or_build, fw.or_patch); | |
2128 | /* no option rom */ | |
7dc98a62 | 2129 | } else if (fw.etrack_id != 0X0000) { |
0b1a6f2e | 2130 | snprintf(adapter->fw_version, |
7dc98a62 CW |
2131 | sizeof(adapter->fw_version), |
2132 | "%d.%d, 0x%08x", | |
2133 | fw.eep_major, fw.eep_minor, fw.etrack_id); | |
2134 | } else { | |
2135 | snprintf(adapter->fw_version, | |
2136 | sizeof(adapter->fw_version), | |
2137 | "%d.%d.%d", | |
2138 | fw.eep_major, fw.eep_minor, fw.eep_build); | |
0b1a6f2e CW |
2139 | } |
2140 | break; | |
d67974f0 | 2141 | } |
d67974f0 CW |
2142 | } |
2143 | ||
56cec249 CW |
2144 | /** |
2145 | * igb_init_mas - init Media Autosense feature if enabled in the NVM | |
2146 | * | |
2147 | * @adapter: adapter struct | |
2148 | **/ | |
2149 | static void igb_init_mas(struct igb_adapter *adapter) | |
2150 | { | |
2151 | struct e1000_hw *hw = &adapter->hw; | |
2152 | u16 eeprom_data; | |
2153 | ||
2154 | hw->nvm.ops.read(hw, NVM_COMPAT, 1, &eeprom_data); | |
2155 | switch (hw->bus.func) { | |
2156 | case E1000_FUNC_0: | |
2157 | if (eeprom_data & IGB_MAS_ENABLE_0) { | |
2158 | adapter->flags |= IGB_FLAG_MAS_ENABLE; | |
2159 | netdev_info(adapter->netdev, | |
2160 | "MAS: Enabling Media Autosense for port %d\n", | |
2161 | hw->bus.func); | |
2162 | } | |
2163 | break; | |
2164 | case E1000_FUNC_1: | |
2165 | if (eeprom_data & IGB_MAS_ENABLE_1) { | |
2166 | adapter->flags |= IGB_FLAG_MAS_ENABLE; | |
2167 | netdev_info(adapter->netdev, | |
2168 | "MAS: Enabling Media Autosense for port %d\n", | |
2169 | hw->bus.func); | |
2170 | } | |
2171 | break; | |
2172 | case E1000_FUNC_2: | |
2173 | if (eeprom_data & IGB_MAS_ENABLE_2) { | |
2174 | adapter->flags |= IGB_FLAG_MAS_ENABLE; | |
2175 | netdev_info(adapter->netdev, | |
2176 | "MAS: Enabling Media Autosense for port %d\n", | |
2177 | hw->bus.func); | |
2178 | } | |
2179 | break; | |
2180 | case E1000_FUNC_3: | |
2181 | if (eeprom_data & IGB_MAS_ENABLE_3) { | |
2182 | adapter->flags |= IGB_FLAG_MAS_ENABLE; | |
2183 | netdev_info(adapter->netdev, | |
2184 | "MAS: Enabling Media Autosense for port %d\n", | |
2185 | hw->bus.func); | |
2186 | } | |
2187 | break; | |
2188 | default: | |
2189 | /* Shouldn't get here */ | |
2190 | netdev_err(adapter->netdev, | |
2191 | "MAS: Invalid port configuration, returning\n"); | |
2192 | break; | |
2193 | } | |
2194 | } | |
2195 | ||
b980ac18 JK |
2196 | /** |
2197 | * igb_init_i2c - Init I2C interface | |
441fc6fd | 2198 | * @adapter: pointer to adapter structure |
b980ac18 | 2199 | **/ |
441fc6fd CW |
2200 | static s32 igb_init_i2c(struct igb_adapter *adapter) |
2201 | { | |
2202 | s32 status = E1000_SUCCESS; | |
2203 | ||
2204 | /* I2C interface supported on i350 devices */ | |
2205 | if (adapter->hw.mac.type != e1000_i350) | |
2206 | return E1000_SUCCESS; | |
2207 | ||
2208 | /* Initialize the i2c bus which is controlled by the registers. | |
2209 | * This bus will use the i2c_algo_bit structue that implements | |
2210 | * the protocol through toggling of the 4 bits in the register. | |
2211 | */ | |
2212 | adapter->i2c_adap.owner = THIS_MODULE; | |
2213 | adapter->i2c_algo = igb_i2c_algo; | |
2214 | adapter->i2c_algo.data = adapter; | |
2215 | adapter->i2c_adap.algo_data = &adapter->i2c_algo; | |
2216 | adapter->i2c_adap.dev.parent = &adapter->pdev->dev; | |
2217 | strlcpy(adapter->i2c_adap.name, "igb BB", | |
2218 | sizeof(adapter->i2c_adap.name)); | |
2219 | status = i2c_bit_add_bus(&adapter->i2c_adap); | |
2220 | return status; | |
2221 | } | |
2222 | ||
9d5c8243 | 2223 | /** |
b980ac18 JK |
2224 | * igb_probe - Device Initialization Routine |
2225 | * @pdev: PCI device information struct | |
2226 | * @ent: entry in igb_pci_tbl | |
9d5c8243 | 2227 | * |
b980ac18 | 2228 | * Returns 0 on success, negative on failure |
9d5c8243 | 2229 | * |
b980ac18 JK |
2230 | * igb_probe initializes an adapter identified by a pci_dev structure. |
2231 | * The OS initialization, configuring of the adapter private structure, | |
2232 | * and a hardware reset occur. | |
9d5c8243 | 2233 | **/ |
1dd06ae8 | 2234 | static int igb_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
9d5c8243 AK |
2235 | { |
2236 | struct net_device *netdev; | |
2237 | struct igb_adapter *adapter; | |
2238 | struct e1000_hw *hw; | |
4337e993 | 2239 | u16 eeprom_data = 0; |
9835fd73 | 2240 | s32 ret_val; |
4337e993 | 2241 | static int global_quad_port_a; /* global quad port a indication */ |
9d5c8243 | 2242 | const struct e1000_info *ei = igb_info_tbl[ent->driver_data]; |
2d6a5e95 | 2243 | int err, pci_using_dac; |
9835fd73 | 2244 | u8 part_str[E1000_PBANUM_LENGTH]; |
9d5c8243 | 2245 | |
bded64a7 AG |
2246 | /* Catch broken hardware that put the wrong VF device ID in |
2247 | * the PCIe SR-IOV capability. | |
2248 | */ | |
2249 | if (pdev->is_virtfn) { | |
2250 | WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n", | |
f96a8a0b | 2251 | pci_name(pdev), pdev->vendor, pdev->device); |
bded64a7 AG |
2252 | return -EINVAL; |
2253 | } | |
2254 | ||
aed5dec3 | 2255 | err = pci_enable_device_mem(pdev); |
9d5c8243 AK |
2256 | if (err) |
2257 | return err; | |
2258 | ||
2259 | pci_using_dac = 0; | |
dc4ff9bb | 2260 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); |
9d5c8243 | 2261 | if (!err) { |
dc4ff9bb | 2262 | pci_using_dac = 1; |
9d5c8243 | 2263 | } else { |
dc4ff9bb | 2264 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
9d5c8243 | 2265 | if (err) { |
dc4ff9bb RK |
2266 | dev_err(&pdev->dev, |
2267 | "No usable DMA configuration, aborting\n"); | |
2268 | goto err_dma; | |
9d5c8243 AK |
2269 | } |
2270 | } | |
2271 | ||
aed5dec3 | 2272 | err = pci_request_selected_regions(pdev, pci_select_bars(pdev, |
b980ac18 JK |
2273 | IORESOURCE_MEM), |
2274 | igb_driver_name); | |
9d5c8243 AK |
2275 | if (err) |
2276 | goto err_pci_reg; | |
2277 | ||
19d5afd4 | 2278 | pci_enable_pcie_error_reporting(pdev); |
40a914fa | 2279 | |
9d5c8243 | 2280 | pci_set_master(pdev); |
c682fc23 | 2281 | pci_save_state(pdev); |
9d5c8243 AK |
2282 | |
2283 | err = -ENOMEM; | |
1bfaf07b | 2284 | netdev = alloc_etherdev_mq(sizeof(struct igb_adapter), |
1cc3bd87 | 2285 | IGB_MAX_TX_QUEUES); |
9d5c8243 AK |
2286 | if (!netdev) |
2287 | goto err_alloc_etherdev; | |
2288 | ||
2289 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2290 | ||
2291 | pci_set_drvdata(pdev, netdev); | |
2292 | adapter = netdev_priv(netdev); | |
2293 | adapter->netdev = netdev; | |
2294 | adapter->pdev = pdev; | |
2295 | hw = &adapter->hw; | |
2296 | hw->back = adapter; | |
b3f4d599 | 2297 | adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); |
9d5c8243 | 2298 | |
9d5c8243 | 2299 | err = -EIO; |
89dbefb2 | 2300 | hw->hw_addr = pci_iomap(pdev, 0, 0); |
28b0759c | 2301 | if (!hw->hw_addr) |
9d5c8243 AK |
2302 | goto err_ioremap; |
2303 | ||
2e5c6922 | 2304 | netdev->netdev_ops = &igb_netdev_ops; |
9d5c8243 | 2305 | igb_set_ethtool_ops(netdev); |
9d5c8243 | 2306 | netdev->watchdog_timeo = 5 * HZ; |
9d5c8243 AK |
2307 | |
2308 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); | |
2309 | ||
89dbefb2 AS |
2310 | netdev->mem_start = pci_resource_start(pdev, 0); |
2311 | netdev->mem_end = pci_resource_end(pdev, 0); | |
9d5c8243 | 2312 | |
9d5c8243 AK |
2313 | /* PCI config space info */ |
2314 | hw->vendor_id = pdev->vendor; | |
2315 | hw->device_id = pdev->device; | |
2316 | hw->revision_id = pdev->revision; | |
2317 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
2318 | hw->subsystem_device_id = pdev->subsystem_device; | |
2319 | ||
9d5c8243 AK |
2320 | /* Copy the default MAC, PHY and NVM function pointers */ |
2321 | memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); | |
2322 | memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); | |
2323 | memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); | |
2324 | /* Initialize skew-specific constants */ | |
2325 | err = ei->get_invariants(hw); | |
2326 | if (err) | |
450c87c8 | 2327 | goto err_sw_init; |
9d5c8243 | 2328 | |
450c87c8 | 2329 | /* setup the private structure */ |
9d5c8243 AK |
2330 | err = igb_sw_init(adapter); |
2331 | if (err) | |
2332 | goto err_sw_init; | |
2333 | ||
2334 | igb_get_bus_info_pcie(hw); | |
2335 | ||
2336 | hw->phy.autoneg_wait_to_complete = false; | |
9d5c8243 AK |
2337 | |
2338 | /* Copper options */ | |
2339 | if (hw->phy.media_type == e1000_media_type_copper) { | |
2340 | hw->phy.mdix = AUTO_ALL_MODES; | |
2341 | hw->phy.disable_polarity_correction = false; | |
2342 | hw->phy.ms_type = e1000_ms_hw_default; | |
2343 | } | |
2344 | ||
2345 | if (igb_check_reset_block(hw)) | |
2346 | dev_info(&pdev->dev, | |
2347 | "PHY reset is blocked due to SOL/IDER session.\n"); | |
2348 | ||
b980ac18 | 2349 | /* features is initialized to 0 in allocation, it might have bits |
077887c3 AD |
2350 | * set by igb_sw_init so we should use an or instead of an |
2351 | * assignment. | |
2352 | */ | |
2353 | netdev->features |= NETIF_F_SG | | |
2354 | NETIF_F_IP_CSUM | | |
2355 | NETIF_F_IPV6_CSUM | | |
2356 | NETIF_F_TSO | | |
2357 | NETIF_F_TSO6 | | |
2358 | NETIF_F_RXHASH | | |
2359 | NETIF_F_RXCSUM | | |
f646968f PM |
2360 | NETIF_F_HW_VLAN_CTAG_RX | |
2361 | NETIF_F_HW_VLAN_CTAG_TX; | |
077887c3 AD |
2362 | |
2363 | /* copy netdev features into list of user selectable features */ | |
2364 | netdev->hw_features |= netdev->features; | |
89eaefb6 | 2365 | netdev->hw_features |= NETIF_F_RXALL; |
077887c3 AD |
2366 | |
2367 | /* set this bit last since it cannot be part of hw_features */ | |
f646968f | 2368 | netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; |
077887c3 AD |
2369 | |
2370 | netdev->vlan_features |= NETIF_F_TSO | | |
2371 | NETIF_F_TSO6 | | |
2372 | NETIF_F_IP_CSUM | | |
2373 | NETIF_F_IPV6_CSUM | | |
2374 | NETIF_F_SG; | |
48f29ffc | 2375 | |
6b8f0922 BG |
2376 | netdev->priv_flags |= IFF_SUPP_NOFCS; |
2377 | ||
7b872a55 | 2378 | if (pci_using_dac) { |
9d5c8243 | 2379 | netdev->features |= NETIF_F_HIGHDMA; |
7b872a55 YZ |
2380 | netdev->vlan_features |= NETIF_F_HIGHDMA; |
2381 | } | |
9d5c8243 | 2382 | |
ac52caa3 MM |
2383 | if (hw->mac.type >= e1000_82576) { |
2384 | netdev->hw_features |= NETIF_F_SCTP_CSUM; | |
b9473560 | 2385 | netdev->features |= NETIF_F_SCTP_CSUM; |
ac52caa3 | 2386 | } |
b9473560 | 2387 | |
01789349 JP |
2388 | netdev->priv_flags |= IFF_UNICAST_FLT; |
2389 | ||
330a6d6a | 2390 | adapter->en_mng_pt = igb_enable_mng_pass_thru(hw); |
9d5c8243 AK |
2391 | |
2392 | /* before reading the NVM, reset the controller to put the device in a | |
b980ac18 JK |
2393 | * known good starting state |
2394 | */ | |
9d5c8243 AK |
2395 | hw->mac.ops.reset_hw(hw); |
2396 | ||
ef3a0092 CW |
2397 | /* make sure the NVM is good , i211/i210 parts can have special NVM |
2398 | * that doesn't contain a checksum | |
f96a8a0b | 2399 | */ |
ef3a0092 CW |
2400 | switch (hw->mac.type) { |
2401 | case e1000_i210: | |
2402 | case e1000_i211: | |
2403 | if (igb_get_flash_presence_i210(hw)) { | |
2404 | if (hw->nvm.ops.validate(hw) < 0) { | |
2405 | dev_err(&pdev->dev, | |
2406 | "The NVM Checksum Is Not Valid\n"); | |
2407 | err = -EIO; | |
2408 | goto err_eeprom; | |
2409 | } | |
2410 | } | |
2411 | break; | |
2412 | default: | |
f96a8a0b CW |
2413 | if (hw->nvm.ops.validate(hw) < 0) { |
2414 | dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n"); | |
2415 | err = -EIO; | |
2416 | goto err_eeprom; | |
2417 | } | |
ef3a0092 | 2418 | break; |
9d5c8243 AK |
2419 | } |
2420 | ||
2421 | /* copy the MAC address out of the NVM */ | |
2422 | if (hw->mac.ops.read_mac_addr(hw)) | |
2423 | dev_err(&pdev->dev, "NVM Read Error\n"); | |
2424 | ||
2425 | memcpy(netdev->dev_addr, hw->mac.addr, netdev->addr_len); | |
9d5c8243 | 2426 | |
aaeb6cdf | 2427 | if (!is_valid_ether_addr(netdev->dev_addr)) { |
9d5c8243 AK |
2428 | dev_err(&pdev->dev, "Invalid MAC Address\n"); |
2429 | err = -EIO; | |
2430 | goto err_eeprom; | |
2431 | } | |
2432 | ||
d67974f0 CW |
2433 | /* get firmware version for ethtool -i */ |
2434 | igb_set_fw_version(adapter); | |
2435 | ||
c061b18d | 2436 | setup_timer(&adapter->watchdog_timer, igb_watchdog, |
b980ac18 | 2437 | (unsigned long) adapter); |
c061b18d | 2438 | setup_timer(&adapter->phy_info_timer, igb_update_phy_info, |
b980ac18 | 2439 | (unsigned long) adapter); |
9d5c8243 AK |
2440 | |
2441 | INIT_WORK(&adapter->reset_task, igb_reset_task); | |
2442 | INIT_WORK(&adapter->watchdog_task, igb_watchdog_task); | |
2443 | ||
450c87c8 | 2444 | /* Initialize link properties that are user-changeable */ |
9d5c8243 AK |
2445 | adapter->fc_autoneg = true; |
2446 | hw->mac.autoneg = true; | |
2447 | hw->phy.autoneg_advertised = 0x2f; | |
2448 | ||
0cce119a AD |
2449 | hw->fc.requested_mode = e1000_fc_default; |
2450 | hw->fc.current_mode = e1000_fc_default; | |
9d5c8243 | 2451 | |
9d5c8243 AK |
2452 | igb_validate_mdi_setting(hw); |
2453 | ||
63d4a8f9 | 2454 | /* By default, support wake on port A */ |
a2cf8b6c | 2455 | if (hw->bus.func == 0) |
63d4a8f9 MV |
2456 | adapter->flags |= IGB_FLAG_WOL_SUPPORTED; |
2457 | ||
2458 | /* Check the NVM for wake support on non-port A ports */ | |
2459 | if (hw->mac.type >= e1000_82580) | |
55cac248 | 2460 | hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A + |
b980ac18 JK |
2461 | NVM_82580_LAN_FUNC_OFFSET(hw->bus.func), 1, |
2462 | &eeprom_data); | |
a2cf8b6c AD |
2463 | else if (hw->bus.func == 1) |
2464 | hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); | |
9d5c8243 | 2465 | |
63d4a8f9 MV |
2466 | if (eeprom_data & IGB_EEPROM_APME) |
2467 | adapter->flags |= IGB_FLAG_WOL_SUPPORTED; | |
9d5c8243 AK |
2468 | |
2469 | /* now that we have the eeprom settings, apply the special cases where | |
2470 | * the eeprom may be wrong or the board simply won't support wake on | |
b980ac18 JK |
2471 | * lan on a particular port |
2472 | */ | |
9d5c8243 AK |
2473 | switch (pdev->device) { |
2474 | case E1000_DEV_ID_82575GB_QUAD_COPPER: | |
63d4a8f9 | 2475 | adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED; |
9d5c8243 AK |
2476 | break; |
2477 | case E1000_DEV_ID_82575EB_FIBER_SERDES: | |
2d064c06 AD |
2478 | case E1000_DEV_ID_82576_FIBER: |
2479 | case E1000_DEV_ID_82576_SERDES: | |
9d5c8243 | 2480 | /* Wake events only supported on port A for dual fiber |
b980ac18 JK |
2481 | * regardless of eeprom setting |
2482 | */ | |
9d5c8243 | 2483 | if (rd32(E1000_STATUS) & E1000_STATUS_FUNC_1) |
63d4a8f9 | 2484 | adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED; |
9d5c8243 | 2485 | break; |
c8ea5ea9 | 2486 | case E1000_DEV_ID_82576_QUAD_COPPER: |
d5aa2252 | 2487 | case E1000_DEV_ID_82576_QUAD_COPPER_ET2: |
c8ea5ea9 AD |
2488 | /* if quad port adapter, disable WoL on all but port A */ |
2489 | if (global_quad_port_a != 0) | |
63d4a8f9 | 2490 | adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED; |
c8ea5ea9 AD |
2491 | else |
2492 | adapter->flags |= IGB_FLAG_QUAD_PORT_A; | |
2493 | /* Reset for multiple quad port adapters */ | |
2494 | if (++global_quad_port_a == 4) | |
2495 | global_quad_port_a = 0; | |
2496 | break; | |
63d4a8f9 MV |
2497 | default: |
2498 | /* If the device can't wake, don't set software support */ | |
2499 | if (!device_can_wakeup(&adapter->pdev->dev)) | |
2500 | adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED; | |
9d5c8243 AK |
2501 | } |
2502 | ||
2503 | /* initialize the wol settings based on the eeprom settings */ | |
63d4a8f9 MV |
2504 | if (adapter->flags & IGB_FLAG_WOL_SUPPORTED) |
2505 | adapter->wol |= E1000_WUFC_MAG; | |
2506 | ||
2507 | /* Some vendors want WoL disabled by default, but still supported */ | |
2508 | if ((hw->mac.type == e1000_i350) && | |
2509 | (pdev->subsystem_vendor == PCI_VENDOR_ID_HP)) { | |
2510 | adapter->flags |= IGB_FLAG_WOL_SUPPORTED; | |
2511 | adapter->wol = 0; | |
2512 | } | |
2513 | ||
2514 | device_set_wakeup_enable(&adapter->pdev->dev, | |
2515 | adapter->flags & IGB_FLAG_WOL_SUPPORTED); | |
9d5c8243 AK |
2516 | |
2517 | /* reset the hardware with the new settings */ | |
2518 | igb_reset(adapter); | |
2519 | ||
441fc6fd CW |
2520 | /* Init the I2C interface */ |
2521 | err = igb_init_i2c(adapter); | |
2522 | if (err) { | |
2523 | dev_err(&pdev->dev, "failed to init i2c interface\n"); | |
2524 | goto err_eeprom; | |
2525 | } | |
2526 | ||
9d5c8243 | 2527 | /* let the f/w know that the h/w is now under the control of the |
e52c0f96 CW |
2528 | * driver. |
2529 | */ | |
9d5c8243 AK |
2530 | igb_get_hw_control(adapter); |
2531 | ||
9d5c8243 AK |
2532 | strcpy(netdev->name, "eth%d"); |
2533 | err = register_netdev(netdev); | |
2534 | if (err) | |
2535 | goto err_register; | |
2536 | ||
b168dfc5 JB |
2537 | /* carrier off reporting is important to ethtool even BEFORE open */ |
2538 | netif_carrier_off(netdev); | |
2539 | ||
421e02f0 | 2540 | #ifdef CONFIG_IGB_DCA |
bbd98fe4 | 2541 | if (dca_add_requester(&pdev->dev) == 0) { |
7dfc16fa | 2542 | adapter->flags |= IGB_FLAG_DCA_ENABLED; |
fe4506b6 | 2543 | dev_info(&pdev->dev, "DCA enabled\n"); |
fe4506b6 JC |
2544 | igb_setup_dca(adapter); |
2545 | } | |
fe4506b6 | 2546 | |
38c845c7 | 2547 | #endif |
e428893b CW |
2548 | #ifdef CONFIG_IGB_HWMON |
2549 | /* Initialize the thermal sensor on i350 devices. */ | |
2550 | if (hw->mac.type == e1000_i350 && hw->bus.func == 0) { | |
2551 | u16 ets_word; | |
3c89f6d0 | 2552 | |
b980ac18 | 2553 | /* Read the NVM to determine if this i350 device supports an |
e428893b CW |
2554 | * external thermal sensor. |
2555 | */ | |
2556 | hw->nvm.ops.read(hw, NVM_ETS_CFG, 1, &ets_word); | |
2557 | if (ets_word != 0x0000 && ets_word != 0xFFFF) | |
2558 | adapter->ets = true; | |
2559 | else | |
2560 | adapter->ets = false; | |
2561 | if (igb_sysfs_init(adapter)) | |
2562 | dev_err(&pdev->dev, | |
2563 | "failed to allocate sysfs resources\n"); | |
2564 | } else { | |
2565 | adapter->ets = false; | |
2566 | } | |
2567 | #endif | |
56cec249 CW |
2568 | /* Check if Media Autosense is enabled */ |
2569 | adapter->ei = *ei; | |
2570 | if (hw->dev_spec._82575.mas_capable) | |
2571 | igb_init_mas(adapter); | |
2572 | ||
673b8b70 | 2573 | /* do hw tstamp init after resetting */ |
7ebae817 | 2574 | igb_ptp_init(adapter); |
673b8b70 | 2575 | |
9d5c8243 | 2576 | dev_info(&pdev->dev, "Intel(R) Gigabit Ethernet Network Connection\n"); |
ceb5f13b CW |
2577 | /* print bus type/speed/width info, not applicable to i354 */ |
2578 | if (hw->mac.type != e1000_i354) { | |
2579 | dev_info(&pdev->dev, "%s: (PCIe:%s:%s) %pM\n", | |
2580 | netdev->name, | |
2581 | ((hw->bus.speed == e1000_bus_speed_2500) ? "2.5Gb/s" : | |
2582 | (hw->bus.speed == e1000_bus_speed_5000) ? "5.0Gb/s" : | |
2583 | "unknown"), | |
2584 | ((hw->bus.width == e1000_bus_width_pcie_x4) ? | |
2585 | "Width x4" : | |
2586 | (hw->bus.width == e1000_bus_width_pcie_x2) ? | |
2587 | "Width x2" : | |
2588 | (hw->bus.width == e1000_bus_width_pcie_x1) ? | |
2589 | "Width x1" : "unknown"), netdev->dev_addr); | |
2590 | } | |
9d5c8243 | 2591 | |
53ea6c7e TF |
2592 | if ((hw->mac.type >= e1000_i210 || |
2593 | igb_get_flash_presence_i210(hw))) { | |
2594 | ret_val = igb_read_part_string(hw, part_str, | |
2595 | E1000_PBANUM_LENGTH); | |
2596 | } else { | |
2597 | ret_val = -E1000_ERR_INVM_VALUE_NOT_FOUND; | |
2598 | } | |
2599 | ||
9835fd73 CW |
2600 | if (ret_val) |
2601 | strcpy(part_str, "Unknown"); | |
2602 | dev_info(&pdev->dev, "%s: PBA No: %s\n", netdev->name, part_str); | |
9d5c8243 AK |
2603 | dev_info(&pdev->dev, |
2604 | "Using %s interrupts. %d rx queue(s), %d tx queue(s)\n", | |
cd14ef54 | 2605 | (adapter->flags & IGB_FLAG_HAS_MSIX) ? "MSI-X" : |
7dfc16fa | 2606 | (adapter->flags & IGB_FLAG_HAS_MSI) ? "MSI" : "legacy", |
9d5c8243 | 2607 | adapter->num_rx_queues, adapter->num_tx_queues); |
f4c01e96 CW |
2608 | if (hw->phy.media_type == e1000_media_type_copper) { |
2609 | switch (hw->mac.type) { | |
2610 | case e1000_i350: | |
2611 | case e1000_i210: | |
2612 | case e1000_i211: | |
2613 | /* Enable EEE for internal copper PHY devices */ | |
2614 | err = igb_set_eee_i350(hw); | |
2615 | if ((!err) && | |
2616 | (!hw->dev_spec._82575.eee_disable)) { | |
2617 | adapter->eee_advert = | |
2618 | MDIO_EEE_100TX | MDIO_EEE_1000T; | |
2619 | adapter->flags |= IGB_FLAG_EEE; | |
2620 | } | |
2621 | break; | |
2622 | case e1000_i354: | |
ceb5f13b | 2623 | if ((rd32(E1000_CTRL_EXT) & |
f4c01e96 CW |
2624 | E1000_CTRL_EXT_LINK_MODE_SGMII)) { |
2625 | err = igb_set_eee_i354(hw); | |
2626 | if ((!err) && | |
2627 | (!hw->dev_spec._82575.eee_disable)) { | |
2628 | adapter->eee_advert = | |
2629 | MDIO_EEE_100TX | MDIO_EEE_1000T; | |
2630 | adapter->flags |= IGB_FLAG_EEE; | |
2631 | } | |
2632 | } | |
2633 | break; | |
2634 | default: | |
2635 | break; | |
ceb5f13b | 2636 | } |
09b068d4 | 2637 | } |
749ab2cd | 2638 | pm_runtime_put_noidle(&pdev->dev); |
9d5c8243 AK |
2639 | return 0; |
2640 | ||
2641 | err_register: | |
2642 | igb_release_hw_control(adapter); | |
441fc6fd | 2643 | memset(&adapter->i2c_adap, 0, sizeof(adapter->i2c_adap)); |
9d5c8243 AK |
2644 | err_eeprom: |
2645 | if (!igb_check_reset_block(hw)) | |
f5f4cf08 | 2646 | igb_reset_phy(hw); |
9d5c8243 AK |
2647 | |
2648 | if (hw->flash_address) | |
2649 | iounmap(hw->flash_address); | |
9d5c8243 | 2650 | err_sw_init: |
047e0030 | 2651 | igb_clear_interrupt_scheme(adapter); |
75009b3a | 2652 | pci_iounmap(pdev, hw->hw_addr); |
9d5c8243 AK |
2653 | err_ioremap: |
2654 | free_netdev(netdev); | |
2655 | err_alloc_etherdev: | |
559e9c49 | 2656 | pci_release_selected_regions(pdev, |
b980ac18 | 2657 | pci_select_bars(pdev, IORESOURCE_MEM)); |
9d5c8243 AK |
2658 | err_pci_reg: |
2659 | err_dma: | |
2660 | pci_disable_device(pdev); | |
2661 | return err; | |
2662 | } | |
2663 | ||
fa44f2f1 | 2664 | #ifdef CONFIG_PCI_IOV |
781798a1 | 2665 | static int igb_disable_sriov(struct pci_dev *pdev) |
fa44f2f1 GR |
2666 | { |
2667 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2668 | struct igb_adapter *adapter = netdev_priv(netdev); | |
2669 | struct e1000_hw *hw = &adapter->hw; | |
2670 | ||
2671 | /* reclaim resources allocated to VFs */ | |
2672 | if (adapter->vf_data) { | |
2673 | /* disable iov and allow time for transactions to clear */ | |
b09186d2 | 2674 | if (pci_vfs_assigned(pdev)) { |
fa44f2f1 GR |
2675 | dev_warn(&pdev->dev, |
2676 | "Cannot deallocate SR-IOV virtual functions while they are assigned - VFs will not be deallocated\n"); | |
2677 | return -EPERM; | |
2678 | } else { | |
2679 | pci_disable_sriov(pdev); | |
2680 | msleep(500); | |
2681 | } | |
2682 | ||
2683 | kfree(adapter->vf_data); | |
2684 | adapter->vf_data = NULL; | |
2685 | adapter->vfs_allocated_count = 0; | |
2686 | wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ); | |
2687 | wrfl(); | |
2688 | msleep(100); | |
2689 | dev_info(&pdev->dev, "IOV Disabled\n"); | |
2690 | ||
2691 | /* Re-enable DMA Coalescing flag since IOV is turned off */ | |
2692 | adapter->flags |= IGB_FLAG_DMAC; | |
2693 | } | |
2694 | ||
2695 | return 0; | |
2696 | } | |
2697 | ||
2698 | static int igb_enable_sriov(struct pci_dev *pdev, int num_vfs) | |
2699 | { | |
2700 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2701 | struct igb_adapter *adapter = netdev_priv(netdev); | |
2702 | int old_vfs = pci_num_vf(pdev); | |
2703 | int err = 0; | |
2704 | int i; | |
2705 | ||
cd14ef54 | 2706 | if (!(adapter->flags & IGB_FLAG_HAS_MSIX) || num_vfs > 7) { |
50267196 MW |
2707 | err = -EPERM; |
2708 | goto out; | |
2709 | } | |
fa44f2f1 GR |
2710 | if (!num_vfs) |
2711 | goto out; | |
fa44f2f1 | 2712 | |
781798a1 SA |
2713 | if (old_vfs) { |
2714 | dev_info(&pdev->dev, "%d pre-allocated VFs found - override max_vfs setting of %d\n", | |
2715 | old_vfs, max_vfs); | |
2716 | adapter->vfs_allocated_count = old_vfs; | |
2717 | } else | |
2718 | adapter->vfs_allocated_count = num_vfs; | |
fa44f2f1 GR |
2719 | |
2720 | adapter->vf_data = kcalloc(adapter->vfs_allocated_count, | |
2721 | sizeof(struct vf_data_storage), GFP_KERNEL); | |
2722 | ||
2723 | /* if allocation failed then we do not support SR-IOV */ | |
2724 | if (!adapter->vf_data) { | |
2725 | adapter->vfs_allocated_count = 0; | |
2726 | dev_err(&pdev->dev, | |
2727 | "Unable to allocate memory for VF Data Storage\n"); | |
2728 | err = -ENOMEM; | |
2729 | goto out; | |
2730 | } | |
2731 | ||
781798a1 SA |
2732 | /* only call pci_enable_sriov() if no VFs are allocated already */ |
2733 | if (!old_vfs) { | |
2734 | err = pci_enable_sriov(pdev, adapter->vfs_allocated_count); | |
2735 | if (err) | |
2736 | goto err_out; | |
2737 | } | |
fa44f2f1 GR |
2738 | dev_info(&pdev->dev, "%d VFs allocated\n", |
2739 | adapter->vfs_allocated_count); | |
2740 | for (i = 0; i < adapter->vfs_allocated_count; i++) | |
2741 | igb_vf_configure(adapter, i); | |
2742 | ||
2743 | /* DMA Coalescing is not supported in IOV mode. */ | |
2744 | adapter->flags &= ~IGB_FLAG_DMAC; | |
2745 | goto out; | |
2746 | ||
2747 | err_out: | |
2748 | kfree(adapter->vf_data); | |
2749 | adapter->vf_data = NULL; | |
2750 | adapter->vfs_allocated_count = 0; | |
2751 | out: | |
2752 | return err; | |
2753 | } | |
2754 | ||
2755 | #endif | |
b980ac18 | 2756 | /** |
441fc6fd CW |
2757 | * igb_remove_i2c - Cleanup I2C interface |
2758 | * @adapter: pointer to adapter structure | |
b980ac18 | 2759 | **/ |
441fc6fd CW |
2760 | static void igb_remove_i2c(struct igb_adapter *adapter) |
2761 | { | |
441fc6fd CW |
2762 | /* free the adapter bus structure */ |
2763 | i2c_del_adapter(&adapter->i2c_adap); | |
2764 | } | |
2765 | ||
9d5c8243 | 2766 | /** |
b980ac18 JK |
2767 | * igb_remove - Device Removal Routine |
2768 | * @pdev: PCI device information struct | |
9d5c8243 | 2769 | * |
b980ac18 JK |
2770 | * igb_remove is called by the PCI subsystem to alert the driver |
2771 | * that it should release a PCI device. The could be caused by a | |
2772 | * Hot-Plug event, or because the driver is going to be removed from | |
2773 | * memory. | |
9d5c8243 | 2774 | **/ |
9f9a12f8 | 2775 | static void igb_remove(struct pci_dev *pdev) |
9d5c8243 AK |
2776 | { |
2777 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2778 | struct igb_adapter *adapter = netdev_priv(netdev); | |
fe4506b6 | 2779 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 | 2780 | |
749ab2cd | 2781 | pm_runtime_get_noresume(&pdev->dev); |
e428893b CW |
2782 | #ifdef CONFIG_IGB_HWMON |
2783 | igb_sysfs_exit(adapter); | |
2784 | #endif | |
441fc6fd | 2785 | igb_remove_i2c(adapter); |
a79f4f88 | 2786 | igb_ptp_stop(adapter); |
b980ac18 | 2787 | /* The watchdog timer may be rescheduled, so explicitly |
760141a5 TH |
2788 | * disable watchdog from being rescheduled. |
2789 | */ | |
9d5c8243 AK |
2790 | set_bit(__IGB_DOWN, &adapter->state); |
2791 | del_timer_sync(&adapter->watchdog_timer); | |
2792 | del_timer_sync(&adapter->phy_info_timer); | |
2793 | ||
760141a5 TH |
2794 | cancel_work_sync(&adapter->reset_task); |
2795 | cancel_work_sync(&adapter->watchdog_task); | |
9d5c8243 | 2796 | |
421e02f0 | 2797 | #ifdef CONFIG_IGB_DCA |
7dfc16fa | 2798 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) { |
fe4506b6 JC |
2799 | dev_info(&pdev->dev, "DCA disabled\n"); |
2800 | dca_remove_requester(&pdev->dev); | |
7dfc16fa | 2801 | adapter->flags &= ~IGB_FLAG_DCA_ENABLED; |
cbd347ad | 2802 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE); |
fe4506b6 JC |
2803 | } |
2804 | #endif | |
2805 | ||
9d5c8243 | 2806 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
b980ac18 JK |
2807 | * would have already happened in close and is redundant. |
2808 | */ | |
9d5c8243 AK |
2809 | igb_release_hw_control(adapter); |
2810 | ||
2811 | unregister_netdev(netdev); | |
2812 | ||
047e0030 | 2813 | igb_clear_interrupt_scheme(adapter); |
9d5c8243 | 2814 | |
37680117 | 2815 | #ifdef CONFIG_PCI_IOV |
fa44f2f1 | 2816 | igb_disable_sriov(pdev); |
37680117 | 2817 | #endif |
559e9c49 | 2818 | |
75009b3a | 2819 | pci_iounmap(pdev, hw->hw_addr); |
28b0759c AD |
2820 | if (hw->flash_address) |
2821 | iounmap(hw->flash_address); | |
559e9c49 | 2822 | pci_release_selected_regions(pdev, |
b980ac18 | 2823 | pci_select_bars(pdev, IORESOURCE_MEM)); |
9d5c8243 | 2824 | |
1128c756 | 2825 | kfree(adapter->shadow_vfta); |
9d5c8243 AK |
2826 | free_netdev(netdev); |
2827 | ||
19d5afd4 | 2828 | pci_disable_pcie_error_reporting(pdev); |
40a914fa | 2829 | |
9d5c8243 AK |
2830 | pci_disable_device(pdev); |
2831 | } | |
2832 | ||
a6b623e0 | 2833 | /** |
b980ac18 JK |
2834 | * igb_probe_vfs - Initialize vf data storage and add VFs to pci config space |
2835 | * @adapter: board private structure to initialize | |
a6b623e0 | 2836 | * |
b980ac18 JK |
2837 | * This function initializes the vf specific data storage and then attempts to |
2838 | * allocate the VFs. The reason for ordering it this way is because it is much | |
2839 | * mor expensive time wise to disable SR-IOV than it is to allocate and free | |
2840 | * the memory for the VFs. | |
a6b623e0 | 2841 | **/ |
9f9a12f8 | 2842 | static void igb_probe_vfs(struct igb_adapter *adapter) |
a6b623e0 AD |
2843 | { |
2844 | #ifdef CONFIG_PCI_IOV | |
2845 | struct pci_dev *pdev = adapter->pdev; | |
f96a8a0b | 2846 | struct e1000_hw *hw = &adapter->hw; |
a6b623e0 | 2847 | |
f96a8a0b CW |
2848 | /* Virtualization features not supported on i210 family. */ |
2849 | if ((hw->mac.type == e1000_i210) || (hw->mac.type == e1000_i211)) | |
2850 | return; | |
2851 | ||
fa44f2f1 | 2852 | pci_sriov_set_totalvfs(pdev, 7); |
781798a1 | 2853 | igb_pci_enable_sriov(pdev, max_vfs); |
0224d663 | 2854 | |
a6b623e0 AD |
2855 | #endif /* CONFIG_PCI_IOV */ |
2856 | } | |
2857 | ||
fa44f2f1 | 2858 | static void igb_init_queue_configuration(struct igb_adapter *adapter) |
9d5c8243 AK |
2859 | { |
2860 | struct e1000_hw *hw = &adapter->hw; | |
374a542d | 2861 | u32 max_rss_queues; |
9d5c8243 | 2862 | |
374a542d | 2863 | /* Determine the maximum number of RSS queues supported. */ |
f96a8a0b | 2864 | switch (hw->mac.type) { |
374a542d MV |
2865 | case e1000_i211: |
2866 | max_rss_queues = IGB_MAX_RX_QUEUES_I211; | |
2867 | break; | |
2868 | case e1000_82575: | |
f96a8a0b | 2869 | case e1000_i210: |
374a542d MV |
2870 | max_rss_queues = IGB_MAX_RX_QUEUES_82575; |
2871 | break; | |
2872 | case e1000_i350: | |
2873 | /* I350 cannot do RSS and SR-IOV at the same time */ | |
2874 | if (!!adapter->vfs_allocated_count) { | |
2875 | max_rss_queues = 1; | |
2876 | break; | |
2877 | } | |
2878 | /* fall through */ | |
2879 | case e1000_82576: | |
2880 | if (!!adapter->vfs_allocated_count) { | |
2881 | max_rss_queues = 2; | |
2882 | break; | |
2883 | } | |
2884 | /* fall through */ | |
2885 | case e1000_82580: | |
ceb5f13b | 2886 | case e1000_i354: |
374a542d MV |
2887 | default: |
2888 | max_rss_queues = IGB_MAX_RX_QUEUES; | |
f96a8a0b | 2889 | break; |
374a542d MV |
2890 | } |
2891 | ||
2892 | adapter->rss_queues = min_t(u32, max_rss_queues, num_online_cpus()); | |
2893 | ||
2894 | /* Determine if we need to pair queues. */ | |
2895 | switch (hw->mac.type) { | |
2896 | case e1000_82575: | |
f96a8a0b | 2897 | case e1000_i211: |
374a542d | 2898 | /* Device supports enough interrupts without queue pairing. */ |
f96a8a0b | 2899 | break; |
374a542d | 2900 | case e1000_82576: |
b980ac18 | 2901 | /* If VFs are going to be allocated with RSS queues then we |
374a542d MV |
2902 | * should pair the queues in order to conserve interrupts due |
2903 | * to limited supply. | |
2904 | */ | |
2905 | if ((adapter->rss_queues > 1) && | |
2906 | (adapter->vfs_allocated_count > 6)) | |
2907 | adapter->flags |= IGB_FLAG_QUEUE_PAIRS; | |
2908 | /* fall through */ | |
2909 | case e1000_82580: | |
2910 | case e1000_i350: | |
ceb5f13b | 2911 | case e1000_i354: |
374a542d | 2912 | case e1000_i210: |
f96a8a0b | 2913 | default: |
b980ac18 | 2914 | /* If rss_queues > half of max_rss_queues, pair the queues in |
374a542d MV |
2915 | * order to conserve interrupts due to limited supply. |
2916 | */ | |
2917 | if (adapter->rss_queues > (max_rss_queues / 2)) | |
2918 | adapter->flags |= IGB_FLAG_QUEUE_PAIRS; | |
f96a8a0b CW |
2919 | break; |
2920 | } | |
fa44f2f1 GR |
2921 | } |
2922 | ||
2923 | /** | |
b980ac18 JK |
2924 | * igb_sw_init - Initialize general software structures (struct igb_adapter) |
2925 | * @adapter: board private structure to initialize | |
fa44f2f1 | 2926 | * |
b980ac18 JK |
2927 | * igb_sw_init initializes the Adapter private data structure. |
2928 | * Fields are initialized based on PCI device information and | |
2929 | * OS network device settings (MTU size). | |
fa44f2f1 GR |
2930 | **/ |
2931 | static int igb_sw_init(struct igb_adapter *adapter) | |
2932 | { | |
2933 | struct e1000_hw *hw = &adapter->hw; | |
2934 | struct net_device *netdev = adapter->netdev; | |
2935 | struct pci_dev *pdev = adapter->pdev; | |
2936 | ||
2937 | pci_read_config_word(pdev, PCI_COMMAND, &hw->bus.pci_cmd_word); | |
2938 | ||
2939 | /* set default ring sizes */ | |
2940 | adapter->tx_ring_count = IGB_DEFAULT_TXD; | |
2941 | adapter->rx_ring_count = IGB_DEFAULT_RXD; | |
2942 | ||
2943 | /* set default ITR values */ | |
2944 | adapter->rx_itr_setting = IGB_DEFAULT_ITR; | |
2945 | adapter->tx_itr_setting = IGB_DEFAULT_ITR; | |
2946 | ||
2947 | /* set default work limits */ | |
2948 | adapter->tx_work_limit = IGB_DEFAULT_TX_WORK; | |
2949 | ||
2950 | adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN + | |
2951 | VLAN_HLEN; | |
2952 | adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; | |
2953 | ||
2954 | spin_lock_init(&adapter->stats64_lock); | |
2955 | #ifdef CONFIG_PCI_IOV | |
2956 | switch (hw->mac.type) { | |
2957 | case e1000_82576: | |
2958 | case e1000_i350: | |
2959 | if (max_vfs > 7) { | |
2960 | dev_warn(&pdev->dev, | |
2961 | "Maximum of 7 VFs per PF, using max\n"); | |
d0f63acc | 2962 | max_vfs = adapter->vfs_allocated_count = 7; |
fa44f2f1 GR |
2963 | } else |
2964 | adapter->vfs_allocated_count = max_vfs; | |
2965 | if (adapter->vfs_allocated_count) | |
2966 | dev_warn(&pdev->dev, | |
2967 | "Enabling SR-IOV VFs using the module parameter is deprecated - please use the pci sysfs interface.\n"); | |
2968 | break; | |
2969 | default: | |
2970 | break; | |
2971 | } | |
2972 | #endif /* CONFIG_PCI_IOV */ | |
2973 | ||
2974 | igb_init_queue_configuration(adapter); | |
a99955fc | 2975 | |
1128c756 | 2976 | /* Setup and initialize a copy of the hw vlan table array */ |
b2adaca9 JP |
2977 | adapter->shadow_vfta = kcalloc(E1000_VLAN_FILTER_TBL_SIZE, sizeof(u32), |
2978 | GFP_ATOMIC); | |
1128c756 | 2979 | |
a6b623e0 | 2980 | /* This call may decrease the number of queues */ |
53c7d064 | 2981 | if (igb_init_interrupt_scheme(adapter, true)) { |
9d5c8243 AK |
2982 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); |
2983 | return -ENOMEM; | |
2984 | } | |
2985 | ||
a6b623e0 AD |
2986 | igb_probe_vfs(adapter); |
2987 | ||
9d5c8243 AK |
2988 | /* Explicitly disable IRQ since the NIC can be in any state. */ |
2989 | igb_irq_disable(adapter); | |
2990 | ||
f96a8a0b | 2991 | if (hw->mac.type >= e1000_i350) |
831ec0b4 CW |
2992 | adapter->flags &= ~IGB_FLAG_DMAC; |
2993 | ||
9d5c8243 AK |
2994 | set_bit(__IGB_DOWN, &adapter->state); |
2995 | return 0; | |
2996 | } | |
2997 | ||
2998 | /** | |
b980ac18 JK |
2999 | * igb_open - Called when a network interface is made active |
3000 | * @netdev: network interface device structure | |
9d5c8243 | 3001 | * |
b980ac18 | 3002 | * Returns 0 on success, negative value on failure |
9d5c8243 | 3003 | * |
b980ac18 JK |
3004 | * The open entry point is called when a network interface is made |
3005 | * active by the system (IFF_UP). At this point all resources needed | |
3006 | * for transmit and receive operations are allocated, the interrupt | |
3007 | * handler is registered with the OS, the watchdog timer is started, | |
3008 | * and the stack is notified that the interface is ready. | |
9d5c8243 | 3009 | **/ |
749ab2cd | 3010 | static int __igb_open(struct net_device *netdev, bool resuming) |
9d5c8243 AK |
3011 | { |
3012 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3013 | struct e1000_hw *hw = &adapter->hw; | |
749ab2cd | 3014 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
3015 | int err; |
3016 | int i; | |
3017 | ||
3018 | /* disallow open during test */ | |
749ab2cd YZ |
3019 | if (test_bit(__IGB_TESTING, &adapter->state)) { |
3020 | WARN_ON(resuming); | |
9d5c8243 | 3021 | return -EBUSY; |
749ab2cd YZ |
3022 | } |
3023 | ||
3024 | if (!resuming) | |
3025 | pm_runtime_get_sync(&pdev->dev); | |
9d5c8243 | 3026 | |
b168dfc5 JB |
3027 | netif_carrier_off(netdev); |
3028 | ||
9d5c8243 AK |
3029 | /* allocate transmit descriptors */ |
3030 | err = igb_setup_all_tx_resources(adapter); | |
3031 | if (err) | |
3032 | goto err_setup_tx; | |
3033 | ||
3034 | /* allocate receive descriptors */ | |
3035 | err = igb_setup_all_rx_resources(adapter); | |
3036 | if (err) | |
3037 | goto err_setup_rx; | |
3038 | ||
88a268c1 | 3039 | igb_power_up_link(adapter); |
9d5c8243 | 3040 | |
9d5c8243 AK |
3041 | /* before we allocate an interrupt, we must be ready to handle it. |
3042 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt | |
3043 | * as soon as we call pci_request_irq, so we have to setup our | |
b980ac18 JK |
3044 | * clean_rx handler before we do so. |
3045 | */ | |
9d5c8243 AK |
3046 | igb_configure(adapter); |
3047 | ||
3048 | err = igb_request_irq(adapter); | |
3049 | if (err) | |
3050 | goto err_req_irq; | |
3051 | ||
0c2cc02e AD |
3052 | /* Notify the stack of the actual queue counts. */ |
3053 | err = netif_set_real_num_tx_queues(adapter->netdev, | |
3054 | adapter->num_tx_queues); | |
3055 | if (err) | |
3056 | goto err_set_queues; | |
3057 | ||
3058 | err = netif_set_real_num_rx_queues(adapter->netdev, | |
3059 | adapter->num_rx_queues); | |
3060 | if (err) | |
3061 | goto err_set_queues; | |
3062 | ||
9d5c8243 AK |
3063 | /* From here on the code is the same as igb_up() */ |
3064 | clear_bit(__IGB_DOWN, &adapter->state); | |
3065 | ||
0d1ae7f4 AD |
3066 | for (i = 0; i < adapter->num_q_vectors; i++) |
3067 | napi_enable(&(adapter->q_vector[i]->napi)); | |
9d5c8243 AK |
3068 | |
3069 | /* Clear any pending interrupts. */ | |
3070 | rd32(E1000_ICR); | |
844290e5 PW |
3071 | |
3072 | igb_irq_enable(adapter); | |
3073 | ||
d4960307 AD |
3074 | /* notify VFs that reset has been completed */ |
3075 | if (adapter->vfs_allocated_count) { | |
3076 | u32 reg_data = rd32(E1000_CTRL_EXT); | |
9005df38 | 3077 | |
d4960307 AD |
3078 | reg_data |= E1000_CTRL_EXT_PFRSTD; |
3079 | wr32(E1000_CTRL_EXT, reg_data); | |
3080 | } | |
3081 | ||
d55b53ff JK |
3082 | netif_tx_start_all_queues(netdev); |
3083 | ||
749ab2cd YZ |
3084 | if (!resuming) |
3085 | pm_runtime_put(&pdev->dev); | |
3086 | ||
25568a53 AD |
3087 | /* start the watchdog. */ |
3088 | hw->mac.get_link_status = 1; | |
3089 | schedule_work(&adapter->watchdog_task); | |
9d5c8243 AK |
3090 | |
3091 | return 0; | |
3092 | ||
0c2cc02e AD |
3093 | err_set_queues: |
3094 | igb_free_irq(adapter); | |
9d5c8243 AK |
3095 | err_req_irq: |
3096 | igb_release_hw_control(adapter); | |
88a268c1 | 3097 | igb_power_down_link(adapter); |
9d5c8243 AK |
3098 | igb_free_all_rx_resources(adapter); |
3099 | err_setup_rx: | |
3100 | igb_free_all_tx_resources(adapter); | |
3101 | err_setup_tx: | |
3102 | igb_reset(adapter); | |
749ab2cd YZ |
3103 | if (!resuming) |
3104 | pm_runtime_put(&pdev->dev); | |
9d5c8243 AK |
3105 | |
3106 | return err; | |
3107 | } | |
3108 | ||
749ab2cd YZ |
3109 | static int igb_open(struct net_device *netdev) |
3110 | { | |
3111 | return __igb_open(netdev, false); | |
3112 | } | |
3113 | ||
9d5c8243 | 3114 | /** |
b980ac18 JK |
3115 | * igb_close - Disables a network interface |
3116 | * @netdev: network interface device structure | |
9d5c8243 | 3117 | * |
b980ac18 | 3118 | * Returns 0, this is not allowed to fail |
9d5c8243 | 3119 | * |
b980ac18 JK |
3120 | * The close entry point is called when an interface is de-activated |
3121 | * by the OS. The hardware is still under the driver's control, but | |
3122 | * needs to be disabled. A global MAC reset is issued to stop the | |
3123 | * hardware, and all transmit and receive resources are freed. | |
9d5c8243 | 3124 | **/ |
749ab2cd | 3125 | static int __igb_close(struct net_device *netdev, bool suspending) |
9d5c8243 AK |
3126 | { |
3127 | struct igb_adapter *adapter = netdev_priv(netdev); | |
749ab2cd | 3128 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
3129 | |
3130 | WARN_ON(test_bit(__IGB_RESETTING, &adapter->state)); | |
9d5c8243 | 3131 | |
749ab2cd YZ |
3132 | if (!suspending) |
3133 | pm_runtime_get_sync(&pdev->dev); | |
3134 | ||
3135 | igb_down(adapter); | |
9d5c8243 AK |
3136 | igb_free_irq(adapter); |
3137 | ||
3138 | igb_free_all_tx_resources(adapter); | |
3139 | igb_free_all_rx_resources(adapter); | |
3140 | ||
749ab2cd YZ |
3141 | if (!suspending) |
3142 | pm_runtime_put_sync(&pdev->dev); | |
9d5c8243 AK |
3143 | return 0; |
3144 | } | |
3145 | ||
749ab2cd YZ |
3146 | static int igb_close(struct net_device *netdev) |
3147 | { | |
3148 | return __igb_close(netdev, false); | |
3149 | } | |
3150 | ||
9d5c8243 | 3151 | /** |
b980ac18 JK |
3152 | * igb_setup_tx_resources - allocate Tx resources (Descriptors) |
3153 | * @tx_ring: tx descriptor ring (for a specific queue) to setup | |
9d5c8243 | 3154 | * |
b980ac18 | 3155 | * Return 0 on success, negative on failure |
9d5c8243 | 3156 | **/ |
80785298 | 3157 | int igb_setup_tx_resources(struct igb_ring *tx_ring) |
9d5c8243 | 3158 | { |
59d71989 | 3159 | struct device *dev = tx_ring->dev; |
9d5c8243 AK |
3160 | int size; |
3161 | ||
06034649 | 3162 | size = sizeof(struct igb_tx_buffer) * tx_ring->count; |
f33005a6 AD |
3163 | |
3164 | tx_ring->tx_buffer_info = vzalloc(size); | |
06034649 | 3165 | if (!tx_ring->tx_buffer_info) |
9d5c8243 | 3166 | goto err; |
9d5c8243 AK |
3167 | |
3168 | /* round up to nearest 4K */ | |
85e8d004 | 3169 | tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc); |
9d5c8243 AK |
3170 | tx_ring->size = ALIGN(tx_ring->size, 4096); |
3171 | ||
5536d210 AD |
3172 | tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size, |
3173 | &tx_ring->dma, GFP_KERNEL); | |
9d5c8243 AK |
3174 | if (!tx_ring->desc) |
3175 | goto err; | |
3176 | ||
9d5c8243 AK |
3177 | tx_ring->next_to_use = 0; |
3178 | tx_ring->next_to_clean = 0; | |
81c2fc22 | 3179 | |
9d5c8243 AK |
3180 | return 0; |
3181 | ||
3182 | err: | |
06034649 | 3183 | vfree(tx_ring->tx_buffer_info); |
f33005a6 AD |
3184 | tx_ring->tx_buffer_info = NULL; |
3185 | dev_err(dev, "Unable to allocate memory for the Tx descriptor ring\n"); | |
9d5c8243 AK |
3186 | return -ENOMEM; |
3187 | } | |
3188 | ||
3189 | /** | |
b980ac18 JK |
3190 | * igb_setup_all_tx_resources - wrapper to allocate Tx resources |
3191 | * (Descriptors) for all queues | |
3192 | * @adapter: board private structure | |
9d5c8243 | 3193 | * |
b980ac18 | 3194 | * Return 0 on success, negative on failure |
9d5c8243 AK |
3195 | **/ |
3196 | static int igb_setup_all_tx_resources(struct igb_adapter *adapter) | |
3197 | { | |
439705e1 | 3198 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
3199 | int i, err = 0; |
3200 | ||
3201 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
3025a446 | 3202 | err = igb_setup_tx_resources(adapter->tx_ring[i]); |
9d5c8243 | 3203 | if (err) { |
439705e1 | 3204 | dev_err(&pdev->dev, |
9d5c8243 AK |
3205 | "Allocation for Tx Queue %u failed\n", i); |
3206 | for (i--; i >= 0; i--) | |
3025a446 | 3207 | igb_free_tx_resources(adapter->tx_ring[i]); |
9d5c8243 AK |
3208 | break; |
3209 | } | |
3210 | } | |
3211 | ||
3212 | return err; | |
3213 | } | |
3214 | ||
3215 | /** | |
b980ac18 JK |
3216 | * igb_setup_tctl - configure the transmit control registers |
3217 | * @adapter: Board private structure | |
9d5c8243 | 3218 | **/ |
d7ee5b3a | 3219 | void igb_setup_tctl(struct igb_adapter *adapter) |
9d5c8243 | 3220 | { |
9d5c8243 AK |
3221 | struct e1000_hw *hw = &adapter->hw; |
3222 | u32 tctl; | |
9d5c8243 | 3223 | |
85b430b4 AD |
3224 | /* disable queue 0 which is enabled by default on 82575 and 82576 */ |
3225 | wr32(E1000_TXDCTL(0), 0); | |
9d5c8243 AK |
3226 | |
3227 | /* Program the Transmit Control Register */ | |
9d5c8243 AK |
3228 | tctl = rd32(E1000_TCTL); |
3229 | tctl &= ~E1000_TCTL_CT; | |
3230 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | | |
3231 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); | |
3232 | ||
3233 | igb_config_collision_dist(hw); | |
3234 | ||
9d5c8243 AK |
3235 | /* Enable transmits */ |
3236 | tctl |= E1000_TCTL_EN; | |
3237 | ||
3238 | wr32(E1000_TCTL, tctl); | |
3239 | } | |
3240 | ||
85b430b4 | 3241 | /** |
b980ac18 JK |
3242 | * igb_configure_tx_ring - Configure transmit ring after Reset |
3243 | * @adapter: board private structure | |
3244 | * @ring: tx ring to configure | |
85b430b4 | 3245 | * |
b980ac18 | 3246 | * Configure a transmit ring after a reset. |
85b430b4 | 3247 | **/ |
d7ee5b3a | 3248 | void igb_configure_tx_ring(struct igb_adapter *adapter, |
9005df38 | 3249 | struct igb_ring *ring) |
85b430b4 AD |
3250 | { |
3251 | struct e1000_hw *hw = &adapter->hw; | |
a74420e0 | 3252 | u32 txdctl = 0; |
85b430b4 AD |
3253 | u64 tdba = ring->dma; |
3254 | int reg_idx = ring->reg_idx; | |
3255 | ||
3256 | /* disable the queue */ | |
a74420e0 | 3257 | wr32(E1000_TXDCTL(reg_idx), 0); |
85b430b4 AD |
3258 | wrfl(); |
3259 | mdelay(10); | |
3260 | ||
3261 | wr32(E1000_TDLEN(reg_idx), | |
b980ac18 | 3262 | ring->count * sizeof(union e1000_adv_tx_desc)); |
85b430b4 | 3263 | wr32(E1000_TDBAL(reg_idx), |
b980ac18 | 3264 | tdba & 0x00000000ffffffffULL); |
85b430b4 AD |
3265 | wr32(E1000_TDBAH(reg_idx), tdba >> 32); |
3266 | ||
fce99e34 | 3267 | ring->tail = hw->hw_addr + E1000_TDT(reg_idx); |
a74420e0 | 3268 | wr32(E1000_TDH(reg_idx), 0); |
fce99e34 | 3269 | writel(0, ring->tail); |
85b430b4 AD |
3270 | |
3271 | txdctl |= IGB_TX_PTHRESH; | |
3272 | txdctl |= IGB_TX_HTHRESH << 8; | |
3273 | txdctl |= IGB_TX_WTHRESH << 16; | |
3274 | ||
3275 | txdctl |= E1000_TXDCTL_QUEUE_ENABLE; | |
3276 | wr32(E1000_TXDCTL(reg_idx), txdctl); | |
3277 | } | |
3278 | ||
3279 | /** | |
b980ac18 JK |
3280 | * igb_configure_tx - Configure transmit Unit after Reset |
3281 | * @adapter: board private structure | |
85b430b4 | 3282 | * |
b980ac18 | 3283 | * Configure the Tx unit of the MAC after a reset. |
85b430b4 AD |
3284 | **/ |
3285 | static void igb_configure_tx(struct igb_adapter *adapter) | |
3286 | { | |
3287 | int i; | |
3288 | ||
3289 | for (i = 0; i < adapter->num_tx_queues; i++) | |
3025a446 | 3290 | igb_configure_tx_ring(adapter, adapter->tx_ring[i]); |
85b430b4 AD |
3291 | } |
3292 | ||
9d5c8243 | 3293 | /** |
b980ac18 JK |
3294 | * igb_setup_rx_resources - allocate Rx resources (Descriptors) |
3295 | * @rx_ring: Rx descriptor ring (for a specific queue) to setup | |
9d5c8243 | 3296 | * |
b980ac18 | 3297 | * Returns 0 on success, negative on failure |
9d5c8243 | 3298 | **/ |
80785298 | 3299 | int igb_setup_rx_resources(struct igb_ring *rx_ring) |
9d5c8243 | 3300 | { |
59d71989 | 3301 | struct device *dev = rx_ring->dev; |
f33005a6 | 3302 | int size; |
9d5c8243 | 3303 | |
06034649 | 3304 | size = sizeof(struct igb_rx_buffer) * rx_ring->count; |
f33005a6 AD |
3305 | |
3306 | rx_ring->rx_buffer_info = vzalloc(size); | |
06034649 | 3307 | if (!rx_ring->rx_buffer_info) |
9d5c8243 | 3308 | goto err; |
9d5c8243 | 3309 | |
9d5c8243 | 3310 | /* Round up to nearest 4K */ |
f33005a6 | 3311 | rx_ring->size = rx_ring->count * sizeof(union e1000_adv_rx_desc); |
9d5c8243 AK |
3312 | rx_ring->size = ALIGN(rx_ring->size, 4096); |
3313 | ||
5536d210 AD |
3314 | rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size, |
3315 | &rx_ring->dma, GFP_KERNEL); | |
9d5c8243 AK |
3316 | if (!rx_ring->desc) |
3317 | goto err; | |
3318 | ||
cbc8e55f | 3319 | rx_ring->next_to_alloc = 0; |
9d5c8243 AK |
3320 | rx_ring->next_to_clean = 0; |
3321 | rx_ring->next_to_use = 0; | |
9d5c8243 | 3322 | |
9d5c8243 AK |
3323 | return 0; |
3324 | ||
3325 | err: | |
06034649 AD |
3326 | vfree(rx_ring->rx_buffer_info); |
3327 | rx_ring->rx_buffer_info = NULL; | |
f33005a6 | 3328 | dev_err(dev, "Unable to allocate memory for the Rx descriptor ring\n"); |
9d5c8243 AK |
3329 | return -ENOMEM; |
3330 | } | |
3331 | ||
3332 | /** | |
b980ac18 JK |
3333 | * igb_setup_all_rx_resources - wrapper to allocate Rx resources |
3334 | * (Descriptors) for all queues | |
3335 | * @adapter: board private structure | |
9d5c8243 | 3336 | * |
b980ac18 | 3337 | * Return 0 on success, negative on failure |
9d5c8243 AK |
3338 | **/ |
3339 | static int igb_setup_all_rx_resources(struct igb_adapter *adapter) | |
3340 | { | |
439705e1 | 3341 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
3342 | int i, err = 0; |
3343 | ||
3344 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
3025a446 | 3345 | err = igb_setup_rx_resources(adapter->rx_ring[i]); |
9d5c8243 | 3346 | if (err) { |
439705e1 | 3347 | dev_err(&pdev->dev, |
9d5c8243 AK |
3348 | "Allocation for Rx Queue %u failed\n", i); |
3349 | for (i--; i >= 0; i--) | |
3025a446 | 3350 | igb_free_rx_resources(adapter->rx_ring[i]); |
9d5c8243 AK |
3351 | break; |
3352 | } | |
3353 | } | |
3354 | ||
3355 | return err; | |
3356 | } | |
3357 | ||
06cf2666 | 3358 | /** |
b980ac18 JK |
3359 | * igb_setup_mrqc - configure the multiple receive queue control registers |
3360 | * @adapter: Board private structure | |
06cf2666 AD |
3361 | **/ |
3362 | static void igb_setup_mrqc(struct igb_adapter *adapter) | |
3363 | { | |
3364 | struct e1000_hw *hw = &adapter->hw; | |
3365 | u32 mrqc, rxcsum; | |
ed12cc9a | 3366 | u32 j, num_rx_queues; |
a57fe23e AD |
3367 | static const u32 rsskey[10] = { 0xDA565A6D, 0xC20E5B25, 0x3D256741, |
3368 | 0xB08FA343, 0xCB2BCAD0, 0xB4307BAE, | |
3369 | 0xA32DCB77, 0x0CF23080, 0x3BB7426A, | |
3370 | 0xFA01ACBE }; | |
06cf2666 AD |
3371 | |
3372 | /* Fill out hash function seeds */ | |
a57fe23e AD |
3373 | for (j = 0; j < 10; j++) |
3374 | wr32(E1000_RSSRK(j), rsskey[j]); | |
06cf2666 | 3375 | |
a99955fc | 3376 | num_rx_queues = adapter->rss_queues; |
06cf2666 | 3377 | |
797fd4be | 3378 | switch (hw->mac.type) { |
797fd4be AD |
3379 | case e1000_82576: |
3380 | /* 82576 supports 2 RSS queues for SR-IOV */ | |
ed12cc9a | 3381 | if (adapter->vfs_allocated_count) |
06cf2666 | 3382 | num_rx_queues = 2; |
797fd4be AD |
3383 | break; |
3384 | default: | |
3385 | break; | |
06cf2666 AD |
3386 | } |
3387 | ||
ed12cc9a LMV |
3388 | if (adapter->rss_indir_tbl_init != num_rx_queues) { |
3389 | for (j = 0; j < IGB_RETA_SIZE; j++) | |
c502ea2e CW |
3390 | adapter->rss_indir_tbl[j] = |
3391 | (j * num_rx_queues) / IGB_RETA_SIZE; | |
ed12cc9a | 3392 | adapter->rss_indir_tbl_init = num_rx_queues; |
06cf2666 | 3393 | } |
ed12cc9a | 3394 | igb_write_rss_indir_tbl(adapter); |
06cf2666 | 3395 | |
b980ac18 | 3396 | /* Disable raw packet checksumming so that RSS hash is placed in |
06cf2666 AD |
3397 | * descriptor on writeback. No need to enable TCP/UDP/IP checksum |
3398 | * offloads as they are enabled by default | |
3399 | */ | |
3400 | rxcsum = rd32(E1000_RXCSUM); | |
3401 | rxcsum |= E1000_RXCSUM_PCSD; | |
3402 | ||
3403 | if (adapter->hw.mac.type >= e1000_82576) | |
3404 | /* Enable Receive Checksum Offload for SCTP */ | |
3405 | rxcsum |= E1000_RXCSUM_CRCOFL; | |
3406 | ||
3407 | /* Don't need to set TUOFL or IPOFL, they default to 1 */ | |
3408 | wr32(E1000_RXCSUM, rxcsum); | |
f96a8a0b | 3409 | |
039454a8 AA |
3410 | /* Generate RSS hash based on packet types, TCP/UDP |
3411 | * port numbers and/or IPv4/v6 src and dst addresses | |
3412 | */ | |
f96a8a0b CW |
3413 | mrqc = E1000_MRQC_RSS_FIELD_IPV4 | |
3414 | E1000_MRQC_RSS_FIELD_IPV4_TCP | | |
3415 | E1000_MRQC_RSS_FIELD_IPV6 | | |
3416 | E1000_MRQC_RSS_FIELD_IPV6_TCP | | |
3417 | E1000_MRQC_RSS_FIELD_IPV6_TCP_EX; | |
06cf2666 | 3418 | |
039454a8 AA |
3419 | if (adapter->flags & IGB_FLAG_RSS_FIELD_IPV4_UDP) |
3420 | mrqc |= E1000_MRQC_RSS_FIELD_IPV4_UDP; | |
3421 | if (adapter->flags & IGB_FLAG_RSS_FIELD_IPV6_UDP) | |
3422 | mrqc |= E1000_MRQC_RSS_FIELD_IPV6_UDP; | |
3423 | ||
06cf2666 AD |
3424 | /* If VMDq is enabled then we set the appropriate mode for that, else |
3425 | * we default to RSS so that an RSS hash is calculated per packet even | |
b980ac18 JK |
3426 | * if we are only using one queue |
3427 | */ | |
06cf2666 AD |
3428 | if (adapter->vfs_allocated_count) { |
3429 | if (hw->mac.type > e1000_82575) { | |
3430 | /* Set the default pool for the PF's first queue */ | |
3431 | u32 vtctl = rd32(E1000_VT_CTL); | |
9005df38 | 3432 | |
06cf2666 AD |
3433 | vtctl &= ~(E1000_VT_CTL_DEFAULT_POOL_MASK | |
3434 | E1000_VT_CTL_DISABLE_DEF_POOL); | |
3435 | vtctl |= adapter->vfs_allocated_count << | |
3436 | E1000_VT_CTL_DEFAULT_POOL_SHIFT; | |
3437 | wr32(E1000_VT_CTL, vtctl); | |
3438 | } | |
a99955fc | 3439 | if (adapter->rss_queues > 1) |
f96a8a0b | 3440 | mrqc |= E1000_MRQC_ENABLE_VMDQ_RSS_2Q; |
06cf2666 | 3441 | else |
f96a8a0b | 3442 | mrqc |= E1000_MRQC_ENABLE_VMDQ; |
06cf2666 | 3443 | } else { |
f96a8a0b CW |
3444 | if (hw->mac.type != e1000_i211) |
3445 | mrqc |= E1000_MRQC_ENABLE_RSS_4Q; | |
06cf2666 AD |
3446 | } |
3447 | igb_vmm_control(adapter); | |
3448 | ||
06cf2666 AD |
3449 | wr32(E1000_MRQC, mrqc); |
3450 | } | |
3451 | ||
9d5c8243 | 3452 | /** |
b980ac18 JK |
3453 | * igb_setup_rctl - configure the receive control registers |
3454 | * @adapter: Board private structure | |
9d5c8243 | 3455 | **/ |
d7ee5b3a | 3456 | void igb_setup_rctl(struct igb_adapter *adapter) |
9d5c8243 AK |
3457 | { |
3458 | struct e1000_hw *hw = &adapter->hw; | |
3459 | u32 rctl; | |
9d5c8243 AK |
3460 | |
3461 | rctl = rd32(E1000_RCTL); | |
3462 | ||
3463 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
69d728ba | 3464 | rctl &= ~(E1000_RCTL_LBM_TCVR | E1000_RCTL_LBM_MAC); |
9d5c8243 | 3465 | |
69d728ba | 3466 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_RDMTS_HALF | |
28b0759c | 3467 | (hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT); |
9d5c8243 | 3468 | |
b980ac18 | 3469 | /* enable stripping of CRC. It's unlikely this will break BMC |
87cb7e8c AK |
3470 | * redirection as it did with e1000. Newer features require |
3471 | * that the HW strips the CRC. | |
73cd78f1 | 3472 | */ |
87cb7e8c | 3473 | rctl |= E1000_RCTL_SECRC; |
9d5c8243 | 3474 | |
559e9c49 | 3475 | /* disable store bad packets and clear size bits. */ |
ec54d7d6 | 3476 | rctl &= ~(E1000_RCTL_SBP | E1000_RCTL_SZ_256); |
9d5c8243 | 3477 | |
6ec43fe6 AD |
3478 | /* enable LPE to prevent packets larger than max_frame_size */ |
3479 | rctl |= E1000_RCTL_LPE; | |
9d5c8243 | 3480 | |
952f72a8 AD |
3481 | /* disable queue 0 to prevent tail write w/o re-config */ |
3482 | wr32(E1000_RXDCTL(0), 0); | |
9d5c8243 | 3483 | |
e1739522 AD |
3484 | /* Attention!!! For SR-IOV PF driver operations you must enable |
3485 | * queue drop for all VF and PF queues to prevent head of line blocking | |
3486 | * if an un-trusted VF does not provide descriptors to hardware. | |
3487 | */ | |
3488 | if (adapter->vfs_allocated_count) { | |
e1739522 AD |
3489 | /* set all queue drop enable bits */ |
3490 | wr32(E1000_QDE, ALL_QUEUES); | |
e1739522 AD |
3491 | } |
3492 | ||
89eaefb6 BG |
3493 | /* This is useful for sniffing bad packets. */ |
3494 | if (adapter->netdev->features & NETIF_F_RXALL) { | |
3495 | /* UPE and MPE will be handled by normal PROMISC logic | |
b980ac18 JK |
3496 | * in e1000e_set_rx_mode |
3497 | */ | |
89eaefb6 BG |
3498 | rctl |= (E1000_RCTL_SBP | /* Receive bad packets */ |
3499 | E1000_RCTL_BAM | /* RX All Bcast Pkts */ | |
3500 | E1000_RCTL_PMCF); /* RX All MAC Ctrl Pkts */ | |
3501 | ||
3502 | rctl &= ~(E1000_RCTL_VFE | /* Disable VLAN filter */ | |
3503 | E1000_RCTL_DPF | /* Allow filtered pause */ | |
3504 | E1000_RCTL_CFIEN); /* Dis VLAN CFIEN Filter */ | |
3505 | /* Do not mess with E1000_CTRL_VME, it affects transmit as well, | |
3506 | * and that breaks VLANs. | |
3507 | */ | |
3508 | } | |
3509 | ||
9d5c8243 AK |
3510 | wr32(E1000_RCTL, rctl); |
3511 | } | |
3512 | ||
7d5753f0 | 3513 | static inline int igb_set_vf_rlpml(struct igb_adapter *adapter, int size, |
9005df38 | 3514 | int vfn) |
7d5753f0 AD |
3515 | { |
3516 | struct e1000_hw *hw = &adapter->hw; | |
3517 | u32 vmolr; | |
3518 | ||
3519 | /* if it isn't the PF check to see if VFs are enabled and | |
b980ac18 JK |
3520 | * increase the size to support vlan tags |
3521 | */ | |
7d5753f0 AD |
3522 | if (vfn < adapter->vfs_allocated_count && |
3523 | adapter->vf_data[vfn].vlans_enabled) | |
3524 | size += VLAN_TAG_SIZE; | |
3525 | ||
3526 | vmolr = rd32(E1000_VMOLR(vfn)); | |
3527 | vmolr &= ~E1000_VMOLR_RLPML_MASK; | |
3528 | vmolr |= size | E1000_VMOLR_LPE; | |
3529 | wr32(E1000_VMOLR(vfn), vmolr); | |
3530 | ||
3531 | return 0; | |
3532 | } | |
3533 | ||
e1739522 | 3534 | /** |
b980ac18 JK |
3535 | * igb_rlpml_set - set maximum receive packet size |
3536 | * @adapter: board private structure | |
e1739522 | 3537 | * |
b980ac18 | 3538 | * Configure maximum receivable packet size. |
e1739522 AD |
3539 | **/ |
3540 | static void igb_rlpml_set(struct igb_adapter *adapter) | |
3541 | { | |
153285f9 | 3542 | u32 max_frame_size = adapter->max_frame_size; |
e1739522 AD |
3543 | struct e1000_hw *hw = &adapter->hw; |
3544 | u16 pf_id = adapter->vfs_allocated_count; | |
3545 | ||
e1739522 AD |
3546 | if (pf_id) { |
3547 | igb_set_vf_rlpml(adapter, max_frame_size, pf_id); | |
b980ac18 | 3548 | /* If we're in VMDQ or SR-IOV mode, then set global RLPML |
153285f9 AD |
3549 | * to our max jumbo frame size, in case we need to enable |
3550 | * jumbo frames on one of the rings later. | |
3551 | * This will not pass over-length frames into the default | |
3552 | * queue because it's gated by the VMOLR.RLPML. | |
3553 | */ | |
7d5753f0 | 3554 | max_frame_size = MAX_JUMBO_FRAME_SIZE; |
e1739522 AD |
3555 | } |
3556 | ||
3557 | wr32(E1000_RLPML, max_frame_size); | |
3558 | } | |
3559 | ||
8151d294 WM |
3560 | static inline void igb_set_vmolr(struct igb_adapter *adapter, |
3561 | int vfn, bool aupe) | |
7d5753f0 AD |
3562 | { |
3563 | struct e1000_hw *hw = &adapter->hw; | |
3564 | u32 vmolr; | |
3565 | ||
b980ac18 | 3566 | /* This register exists only on 82576 and newer so if we are older then |
7d5753f0 AD |
3567 | * we should exit and do nothing |
3568 | */ | |
3569 | if (hw->mac.type < e1000_82576) | |
3570 | return; | |
3571 | ||
3572 | vmolr = rd32(E1000_VMOLR(vfn)); | |
b980ac18 | 3573 | vmolr |= E1000_VMOLR_STRVLAN; /* Strip vlan tags */ |
dc1edc67 SA |
3574 | if (hw->mac.type == e1000_i350) { |
3575 | u32 dvmolr; | |
3576 | ||
3577 | dvmolr = rd32(E1000_DVMOLR(vfn)); | |
3578 | dvmolr |= E1000_DVMOLR_STRVLAN; | |
3579 | wr32(E1000_DVMOLR(vfn), dvmolr); | |
3580 | } | |
8151d294 | 3581 | if (aupe) |
b980ac18 | 3582 | vmolr |= E1000_VMOLR_AUPE; /* Accept untagged packets */ |
8151d294 WM |
3583 | else |
3584 | vmolr &= ~(E1000_VMOLR_AUPE); /* Tagged packets ONLY */ | |
7d5753f0 AD |
3585 | |
3586 | /* clear all bits that might not be set */ | |
3587 | vmolr &= ~(E1000_VMOLR_BAM | E1000_VMOLR_RSSE); | |
3588 | ||
a99955fc | 3589 | if (adapter->rss_queues > 1 && vfn == adapter->vfs_allocated_count) |
7d5753f0 | 3590 | vmolr |= E1000_VMOLR_RSSE; /* enable RSS */ |
b980ac18 | 3591 | /* for VMDq only allow the VFs and pool 0 to accept broadcast and |
7d5753f0 AD |
3592 | * multicast packets |
3593 | */ | |
3594 | if (vfn <= adapter->vfs_allocated_count) | |
b980ac18 | 3595 | vmolr |= E1000_VMOLR_BAM; /* Accept broadcast */ |
7d5753f0 AD |
3596 | |
3597 | wr32(E1000_VMOLR(vfn), vmolr); | |
3598 | } | |
3599 | ||
85b430b4 | 3600 | /** |
b980ac18 JK |
3601 | * igb_configure_rx_ring - Configure a receive ring after Reset |
3602 | * @adapter: board private structure | |
3603 | * @ring: receive ring to be configured | |
85b430b4 | 3604 | * |
b980ac18 | 3605 | * Configure the Rx unit of the MAC after a reset. |
85b430b4 | 3606 | **/ |
d7ee5b3a | 3607 | void igb_configure_rx_ring(struct igb_adapter *adapter, |
b980ac18 | 3608 | struct igb_ring *ring) |
85b430b4 AD |
3609 | { |
3610 | struct e1000_hw *hw = &adapter->hw; | |
3611 | u64 rdba = ring->dma; | |
3612 | int reg_idx = ring->reg_idx; | |
a74420e0 | 3613 | u32 srrctl = 0, rxdctl = 0; |
85b430b4 AD |
3614 | |
3615 | /* disable the queue */ | |
a74420e0 | 3616 | wr32(E1000_RXDCTL(reg_idx), 0); |
85b430b4 AD |
3617 | |
3618 | /* Set DMA base address registers */ | |
3619 | wr32(E1000_RDBAL(reg_idx), | |
3620 | rdba & 0x00000000ffffffffULL); | |
3621 | wr32(E1000_RDBAH(reg_idx), rdba >> 32); | |
3622 | wr32(E1000_RDLEN(reg_idx), | |
b980ac18 | 3623 | ring->count * sizeof(union e1000_adv_rx_desc)); |
85b430b4 AD |
3624 | |
3625 | /* initialize head and tail */ | |
fce99e34 | 3626 | ring->tail = hw->hw_addr + E1000_RDT(reg_idx); |
a74420e0 | 3627 | wr32(E1000_RDH(reg_idx), 0); |
fce99e34 | 3628 | writel(0, ring->tail); |
85b430b4 | 3629 | |
952f72a8 | 3630 | /* set descriptor configuration */ |
44390ca6 | 3631 | srrctl = IGB_RX_HDR_LEN << E1000_SRRCTL_BSIZEHDRSIZE_SHIFT; |
de78d1f9 | 3632 | srrctl |= IGB_RX_BUFSZ >> E1000_SRRCTL_BSIZEPKT_SHIFT; |
1a1c225b | 3633 | srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF; |
06218a8d | 3634 | if (hw->mac.type >= e1000_82580) |
757b77e2 | 3635 | srrctl |= E1000_SRRCTL_TIMESTAMP; |
e6bdb6fe NN |
3636 | /* Only set Drop Enable if we are supporting multiple queues */ |
3637 | if (adapter->vfs_allocated_count || adapter->num_rx_queues > 1) | |
3638 | srrctl |= E1000_SRRCTL_DROP_EN; | |
952f72a8 AD |
3639 | |
3640 | wr32(E1000_SRRCTL(reg_idx), srrctl); | |
3641 | ||
7d5753f0 | 3642 | /* set filtering for VMDQ pools */ |
8151d294 | 3643 | igb_set_vmolr(adapter, reg_idx & 0x7, true); |
7d5753f0 | 3644 | |
85b430b4 AD |
3645 | rxdctl |= IGB_RX_PTHRESH; |
3646 | rxdctl |= IGB_RX_HTHRESH << 8; | |
3647 | rxdctl |= IGB_RX_WTHRESH << 16; | |
a74420e0 AD |
3648 | |
3649 | /* enable receive descriptor fetching */ | |
3650 | rxdctl |= E1000_RXDCTL_QUEUE_ENABLE; | |
85b430b4 AD |
3651 | wr32(E1000_RXDCTL(reg_idx), rxdctl); |
3652 | } | |
3653 | ||
9d5c8243 | 3654 | /** |
b980ac18 JK |
3655 | * igb_configure_rx - Configure receive Unit after Reset |
3656 | * @adapter: board private structure | |
9d5c8243 | 3657 | * |
b980ac18 | 3658 | * Configure the Rx unit of the MAC after a reset. |
9d5c8243 AK |
3659 | **/ |
3660 | static void igb_configure_rx(struct igb_adapter *adapter) | |
3661 | { | |
9107584e | 3662 | int i; |
9d5c8243 | 3663 | |
68d480c4 AD |
3664 | /* set UTA to appropriate mode */ |
3665 | igb_set_uta(adapter); | |
3666 | ||
26ad9178 AD |
3667 | /* set the correct pool for the PF default MAC address in entry 0 */ |
3668 | igb_rar_set_qsel(adapter, adapter->hw.mac.addr, 0, | |
b980ac18 | 3669 | adapter->vfs_allocated_count); |
26ad9178 | 3670 | |
06cf2666 | 3671 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
b980ac18 JK |
3672 | * the Base and Length of the Rx Descriptor Ring |
3673 | */ | |
f9d40f6a AD |
3674 | for (i = 0; i < adapter->num_rx_queues; i++) |
3675 | igb_configure_rx_ring(adapter, adapter->rx_ring[i]); | |
9d5c8243 AK |
3676 | } |
3677 | ||
3678 | /** | |
b980ac18 JK |
3679 | * igb_free_tx_resources - Free Tx Resources per Queue |
3680 | * @tx_ring: Tx descriptor ring for a specific queue | |
9d5c8243 | 3681 | * |
b980ac18 | 3682 | * Free all transmit software resources |
9d5c8243 | 3683 | **/ |
68fd9910 | 3684 | void igb_free_tx_resources(struct igb_ring *tx_ring) |
9d5c8243 | 3685 | { |
3b644cf6 | 3686 | igb_clean_tx_ring(tx_ring); |
9d5c8243 | 3687 | |
06034649 AD |
3688 | vfree(tx_ring->tx_buffer_info); |
3689 | tx_ring->tx_buffer_info = NULL; | |
9d5c8243 | 3690 | |
439705e1 AD |
3691 | /* if not set, then don't free */ |
3692 | if (!tx_ring->desc) | |
3693 | return; | |
3694 | ||
59d71989 AD |
3695 | dma_free_coherent(tx_ring->dev, tx_ring->size, |
3696 | tx_ring->desc, tx_ring->dma); | |
9d5c8243 AK |
3697 | |
3698 | tx_ring->desc = NULL; | |
3699 | } | |
3700 | ||
3701 | /** | |
b980ac18 JK |
3702 | * igb_free_all_tx_resources - Free Tx Resources for All Queues |
3703 | * @adapter: board private structure | |
9d5c8243 | 3704 | * |
b980ac18 | 3705 | * Free all transmit software resources |
9d5c8243 AK |
3706 | **/ |
3707 | static void igb_free_all_tx_resources(struct igb_adapter *adapter) | |
3708 | { | |
3709 | int i; | |
3710 | ||
3711 | for (i = 0; i < adapter->num_tx_queues; i++) | |
3025a446 | 3712 | igb_free_tx_resources(adapter->tx_ring[i]); |
9d5c8243 AK |
3713 | } |
3714 | ||
ebe42d16 AD |
3715 | void igb_unmap_and_free_tx_resource(struct igb_ring *ring, |
3716 | struct igb_tx_buffer *tx_buffer) | |
3717 | { | |
3718 | if (tx_buffer->skb) { | |
3719 | dev_kfree_skb_any(tx_buffer->skb); | |
c9f14bf3 | 3720 | if (dma_unmap_len(tx_buffer, len)) |
ebe42d16 | 3721 | dma_unmap_single(ring->dev, |
c9f14bf3 AD |
3722 | dma_unmap_addr(tx_buffer, dma), |
3723 | dma_unmap_len(tx_buffer, len), | |
ebe42d16 | 3724 | DMA_TO_DEVICE); |
c9f14bf3 | 3725 | } else if (dma_unmap_len(tx_buffer, len)) { |
ebe42d16 | 3726 | dma_unmap_page(ring->dev, |
c9f14bf3 AD |
3727 | dma_unmap_addr(tx_buffer, dma), |
3728 | dma_unmap_len(tx_buffer, len), | |
ebe42d16 AD |
3729 | DMA_TO_DEVICE); |
3730 | } | |
3731 | tx_buffer->next_to_watch = NULL; | |
3732 | tx_buffer->skb = NULL; | |
c9f14bf3 | 3733 | dma_unmap_len_set(tx_buffer, len, 0); |
ebe42d16 | 3734 | /* buffer_info must be completely set up in the transmit path */ |
9d5c8243 AK |
3735 | } |
3736 | ||
3737 | /** | |
b980ac18 JK |
3738 | * igb_clean_tx_ring - Free Tx Buffers |
3739 | * @tx_ring: ring to be cleaned | |
9d5c8243 | 3740 | **/ |
3b644cf6 | 3741 | static void igb_clean_tx_ring(struct igb_ring *tx_ring) |
9d5c8243 | 3742 | { |
06034649 | 3743 | struct igb_tx_buffer *buffer_info; |
9d5c8243 | 3744 | unsigned long size; |
6ad4edfc | 3745 | u16 i; |
9d5c8243 | 3746 | |
06034649 | 3747 | if (!tx_ring->tx_buffer_info) |
9d5c8243 AK |
3748 | return; |
3749 | /* Free all the Tx ring sk_buffs */ | |
3750 | ||
3751 | for (i = 0; i < tx_ring->count; i++) { | |
06034649 | 3752 | buffer_info = &tx_ring->tx_buffer_info[i]; |
80785298 | 3753 | igb_unmap_and_free_tx_resource(tx_ring, buffer_info); |
9d5c8243 AK |
3754 | } |
3755 | ||
dad8a3b3 JF |
3756 | netdev_tx_reset_queue(txring_txq(tx_ring)); |
3757 | ||
06034649 AD |
3758 | size = sizeof(struct igb_tx_buffer) * tx_ring->count; |
3759 | memset(tx_ring->tx_buffer_info, 0, size); | |
9d5c8243 AK |
3760 | |
3761 | /* Zero out the descriptor ring */ | |
9d5c8243 AK |
3762 | memset(tx_ring->desc, 0, tx_ring->size); |
3763 | ||
3764 | tx_ring->next_to_use = 0; | |
3765 | tx_ring->next_to_clean = 0; | |
9d5c8243 AK |
3766 | } |
3767 | ||
3768 | /** | |
b980ac18 JK |
3769 | * igb_clean_all_tx_rings - Free Tx Buffers for all queues |
3770 | * @adapter: board private structure | |
9d5c8243 AK |
3771 | **/ |
3772 | static void igb_clean_all_tx_rings(struct igb_adapter *adapter) | |
3773 | { | |
3774 | int i; | |
3775 | ||
3776 | for (i = 0; i < adapter->num_tx_queues; i++) | |
3025a446 | 3777 | igb_clean_tx_ring(adapter->tx_ring[i]); |
9d5c8243 AK |
3778 | } |
3779 | ||
3780 | /** | |
b980ac18 JK |
3781 | * igb_free_rx_resources - Free Rx Resources |
3782 | * @rx_ring: ring to clean the resources from | |
9d5c8243 | 3783 | * |
b980ac18 | 3784 | * Free all receive software resources |
9d5c8243 | 3785 | **/ |
68fd9910 | 3786 | void igb_free_rx_resources(struct igb_ring *rx_ring) |
9d5c8243 | 3787 | { |
3b644cf6 | 3788 | igb_clean_rx_ring(rx_ring); |
9d5c8243 | 3789 | |
06034649 AD |
3790 | vfree(rx_ring->rx_buffer_info); |
3791 | rx_ring->rx_buffer_info = NULL; | |
9d5c8243 | 3792 | |
439705e1 AD |
3793 | /* if not set, then don't free */ |
3794 | if (!rx_ring->desc) | |
3795 | return; | |
3796 | ||
59d71989 AD |
3797 | dma_free_coherent(rx_ring->dev, rx_ring->size, |
3798 | rx_ring->desc, rx_ring->dma); | |
9d5c8243 AK |
3799 | |
3800 | rx_ring->desc = NULL; | |
3801 | } | |
3802 | ||
3803 | /** | |
b980ac18 JK |
3804 | * igb_free_all_rx_resources - Free Rx Resources for All Queues |
3805 | * @adapter: board private structure | |
9d5c8243 | 3806 | * |
b980ac18 | 3807 | * Free all receive software resources |
9d5c8243 AK |
3808 | **/ |
3809 | static void igb_free_all_rx_resources(struct igb_adapter *adapter) | |
3810 | { | |
3811 | int i; | |
3812 | ||
3813 | for (i = 0; i < adapter->num_rx_queues; i++) | |
3025a446 | 3814 | igb_free_rx_resources(adapter->rx_ring[i]); |
9d5c8243 AK |
3815 | } |
3816 | ||
3817 | /** | |
b980ac18 JK |
3818 | * igb_clean_rx_ring - Free Rx Buffers per Queue |
3819 | * @rx_ring: ring to free buffers from | |
9d5c8243 | 3820 | **/ |
3b644cf6 | 3821 | static void igb_clean_rx_ring(struct igb_ring *rx_ring) |
9d5c8243 | 3822 | { |
9d5c8243 | 3823 | unsigned long size; |
c023cd88 | 3824 | u16 i; |
9d5c8243 | 3825 | |
1a1c225b AD |
3826 | if (rx_ring->skb) |
3827 | dev_kfree_skb(rx_ring->skb); | |
3828 | rx_ring->skb = NULL; | |
3829 | ||
06034649 | 3830 | if (!rx_ring->rx_buffer_info) |
9d5c8243 | 3831 | return; |
439705e1 | 3832 | |
9d5c8243 AK |
3833 | /* Free all the Rx ring sk_buffs */ |
3834 | for (i = 0; i < rx_ring->count; i++) { | |
06034649 | 3835 | struct igb_rx_buffer *buffer_info = &rx_ring->rx_buffer_info[i]; |
9d5c8243 | 3836 | |
cbc8e55f AD |
3837 | if (!buffer_info->page) |
3838 | continue; | |
3839 | ||
3840 | dma_unmap_page(rx_ring->dev, | |
3841 | buffer_info->dma, | |
3842 | PAGE_SIZE, | |
3843 | DMA_FROM_DEVICE); | |
3844 | __free_page(buffer_info->page); | |
3845 | ||
1a1c225b | 3846 | buffer_info->page = NULL; |
9d5c8243 AK |
3847 | } |
3848 | ||
06034649 AD |
3849 | size = sizeof(struct igb_rx_buffer) * rx_ring->count; |
3850 | memset(rx_ring->rx_buffer_info, 0, size); | |
9d5c8243 AK |
3851 | |
3852 | /* Zero out the descriptor ring */ | |
3853 | memset(rx_ring->desc, 0, rx_ring->size); | |
3854 | ||
cbc8e55f | 3855 | rx_ring->next_to_alloc = 0; |
9d5c8243 AK |
3856 | rx_ring->next_to_clean = 0; |
3857 | rx_ring->next_to_use = 0; | |
9d5c8243 AK |
3858 | } |
3859 | ||
3860 | /** | |
b980ac18 JK |
3861 | * igb_clean_all_rx_rings - Free Rx Buffers for all queues |
3862 | * @adapter: board private structure | |
9d5c8243 AK |
3863 | **/ |
3864 | static void igb_clean_all_rx_rings(struct igb_adapter *adapter) | |
3865 | { | |
3866 | int i; | |
3867 | ||
3868 | for (i = 0; i < adapter->num_rx_queues; i++) | |
3025a446 | 3869 | igb_clean_rx_ring(adapter->rx_ring[i]); |
9d5c8243 AK |
3870 | } |
3871 | ||
3872 | /** | |
b980ac18 JK |
3873 | * igb_set_mac - Change the Ethernet Address of the NIC |
3874 | * @netdev: network interface device structure | |
3875 | * @p: pointer to an address structure | |
9d5c8243 | 3876 | * |
b980ac18 | 3877 | * Returns 0 on success, negative on failure |
9d5c8243 AK |
3878 | **/ |
3879 | static int igb_set_mac(struct net_device *netdev, void *p) | |
3880 | { | |
3881 | struct igb_adapter *adapter = netdev_priv(netdev); | |
28b0759c | 3882 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 AK |
3883 | struct sockaddr *addr = p; |
3884 | ||
3885 | if (!is_valid_ether_addr(addr->sa_data)) | |
3886 | return -EADDRNOTAVAIL; | |
3887 | ||
3888 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
28b0759c | 3889 | memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); |
9d5c8243 | 3890 | |
26ad9178 AD |
3891 | /* set the correct pool for the new PF MAC address in entry 0 */ |
3892 | igb_rar_set_qsel(adapter, hw->mac.addr, 0, | |
b980ac18 | 3893 | adapter->vfs_allocated_count); |
e1739522 | 3894 | |
9d5c8243 AK |
3895 | return 0; |
3896 | } | |
3897 | ||
3898 | /** | |
b980ac18 JK |
3899 | * igb_write_mc_addr_list - write multicast addresses to MTA |
3900 | * @netdev: network interface device structure | |
9d5c8243 | 3901 | * |
b980ac18 JK |
3902 | * Writes multicast address list to the MTA hash table. |
3903 | * Returns: -ENOMEM on failure | |
3904 | * 0 on no addresses written | |
3905 | * X on writing X addresses to MTA | |
9d5c8243 | 3906 | **/ |
68d480c4 | 3907 | static int igb_write_mc_addr_list(struct net_device *netdev) |
9d5c8243 AK |
3908 | { |
3909 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3910 | struct e1000_hw *hw = &adapter->hw; | |
22bedad3 | 3911 | struct netdev_hw_addr *ha; |
68d480c4 | 3912 | u8 *mta_list; |
9d5c8243 AK |
3913 | int i; |
3914 | ||
4cd24eaf | 3915 | if (netdev_mc_empty(netdev)) { |
68d480c4 AD |
3916 | /* nothing to program, so clear mc list */ |
3917 | igb_update_mc_addr_list(hw, NULL, 0); | |
3918 | igb_restore_vf_multicasts(adapter); | |
3919 | return 0; | |
3920 | } | |
9d5c8243 | 3921 | |
4cd24eaf | 3922 | mta_list = kzalloc(netdev_mc_count(netdev) * 6, GFP_ATOMIC); |
68d480c4 AD |
3923 | if (!mta_list) |
3924 | return -ENOMEM; | |
ff41f8dc | 3925 | |
68d480c4 | 3926 | /* The shared function expects a packed array of only addresses. */ |
48e2f183 | 3927 | i = 0; |
22bedad3 JP |
3928 | netdev_for_each_mc_addr(ha, netdev) |
3929 | memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN); | |
68d480c4 | 3930 | |
68d480c4 AD |
3931 | igb_update_mc_addr_list(hw, mta_list, i); |
3932 | kfree(mta_list); | |
3933 | ||
4cd24eaf | 3934 | return netdev_mc_count(netdev); |
68d480c4 AD |
3935 | } |
3936 | ||
3937 | /** | |
b980ac18 JK |
3938 | * igb_write_uc_addr_list - write unicast addresses to RAR table |
3939 | * @netdev: network interface device structure | |
68d480c4 | 3940 | * |
b980ac18 JK |
3941 | * Writes unicast address list to the RAR table. |
3942 | * Returns: -ENOMEM on failure/insufficient address space | |
3943 | * 0 on no addresses written | |
3944 | * X on writing X addresses to the RAR table | |
68d480c4 AD |
3945 | **/ |
3946 | static int igb_write_uc_addr_list(struct net_device *netdev) | |
3947 | { | |
3948 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3949 | struct e1000_hw *hw = &adapter->hw; | |
3950 | unsigned int vfn = adapter->vfs_allocated_count; | |
3951 | unsigned int rar_entries = hw->mac.rar_entry_count - (vfn + 1); | |
3952 | int count = 0; | |
3953 | ||
3954 | /* return ENOMEM indicating insufficient memory for addresses */ | |
32e7bfc4 | 3955 | if (netdev_uc_count(netdev) > rar_entries) |
68d480c4 | 3956 | return -ENOMEM; |
9d5c8243 | 3957 | |
32e7bfc4 | 3958 | if (!netdev_uc_empty(netdev) && rar_entries) { |
ff41f8dc | 3959 | struct netdev_hw_addr *ha; |
32e7bfc4 JP |
3960 | |
3961 | netdev_for_each_uc_addr(ha, netdev) { | |
ff41f8dc AD |
3962 | if (!rar_entries) |
3963 | break; | |
26ad9178 | 3964 | igb_rar_set_qsel(adapter, ha->addr, |
b980ac18 JK |
3965 | rar_entries--, |
3966 | vfn); | |
68d480c4 | 3967 | count++; |
ff41f8dc AD |
3968 | } |
3969 | } | |
3970 | /* write the addresses in reverse order to avoid write combining */ | |
3971 | for (; rar_entries > 0 ; rar_entries--) { | |
3972 | wr32(E1000_RAH(rar_entries), 0); | |
3973 | wr32(E1000_RAL(rar_entries), 0); | |
3974 | } | |
3975 | wrfl(); | |
3976 | ||
68d480c4 AD |
3977 | return count; |
3978 | } | |
3979 | ||
3980 | /** | |
b980ac18 JK |
3981 | * igb_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set |
3982 | * @netdev: network interface device structure | |
68d480c4 | 3983 | * |
b980ac18 JK |
3984 | * The set_rx_mode entry point is called whenever the unicast or multicast |
3985 | * address lists or the network interface flags are updated. This routine is | |
3986 | * responsible for configuring the hardware for proper unicast, multicast, | |
3987 | * promiscuous mode, and all-multi behavior. | |
68d480c4 AD |
3988 | **/ |
3989 | static void igb_set_rx_mode(struct net_device *netdev) | |
3990 | { | |
3991 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3992 | struct e1000_hw *hw = &adapter->hw; | |
3993 | unsigned int vfn = adapter->vfs_allocated_count; | |
3994 | u32 rctl, vmolr = 0; | |
3995 | int count; | |
3996 | ||
3997 | /* Check for Promiscuous and All Multicast modes */ | |
3998 | rctl = rd32(E1000_RCTL); | |
3999 | ||
4000 | /* clear the effected bits */ | |
4001 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE | E1000_RCTL_VFE); | |
4002 | ||
4003 | if (netdev->flags & IFF_PROMISC) { | |
6f3dc319 | 4004 | /* retain VLAN HW filtering if in VT mode */ |
7e44892c | 4005 | if (adapter->vfs_allocated_count) |
6f3dc319 | 4006 | rctl |= E1000_RCTL_VFE; |
68d480c4 AD |
4007 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
4008 | vmolr |= (E1000_VMOLR_ROPE | E1000_VMOLR_MPME); | |
4009 | } else { | |
4010 | if (netdev->flags & IFF_ALLMULTI) { | |
4011 | rctl |= E1000_RCTL_MPE; | |
4012 | vmolr |= E1000_VMOLR_MPME; | |
4013 | } else { | |
b980ac18 | 4014 | /* Write addresses to the MTA, if the attempt fails |
25985edc | 4015 | * then we should just turn on promiscuous mode so |
68d480c4 AD |
4016 | * that we can at least receive multicast traffic |
4017 | */ | |
4018 | count = igb_write_mc_addr_list(netdev); | |
4019 | if (count < 0) { | |
4020 | rctl |= E1000_RCTL_MPE; | |
4021 | vmolr |= E1000_VMOLR_MPME; | |
4022 | } else if (count) { | |
4023 | vmolr |= E1000_VMOLR_ROMPE; | |
4024 | } | |
4025 | } | |
b980ac18 | 4026 | /* Write addresses to available RAR registers, if there is not |
68d480c4 | 4027 | * sufficient space to store all the addresses then enable |
25985edc | 4028 | * unicast promiscuous mode |
68d480c4 AD |
4029 | */ |
4030 | count = igb_write_uc_addr_list(netdev); | |
4031 | if (count < 0) { | |
4032 | rctl |= E1000_RCTL_UPE; | |
4033 | vmolr |= E1000_VMOLR_ROPE; | |
4034 | } | |
4035 | rctl |= E1000_RCTL_VFE; | |
28fc06f5 | 4036 | } |
68d480c4 | 4037 | wr32(E1000_RCTL, rctl); |
28fc06f5 | 4038 | |
b980ac18 | 4039 | /* In order to support SR-IOV and eventually VMDq it is necessary to set |
68d480c4 AD |
4040 | * the VMOLR to enable the appropriate modes. Without this workaround |
4041 | * we will have issues with VLAN tag stripping not being done for frames | |
4042 | * that are only arriving because we are the default pool | |
4043 | */ | |
f96a8a0b | 4044 | if ((hw->mac.type < e1000_82576) || (hw->mac.type > e1000_i350)) |
28fc06f5 | 4045 | return; |
9d5c8243 | 4046 | |
68d480c4 | 4047 | vmolr |= rd32(E1000_VMOLR(vfn)) & |
b980ac18 | 4048 | ~(E1000_VMOLR_ROPE | E1000_VMOLR_MPME | E1000_VMOLR_ROMPE); |
68d480c4 | 4049 | wr32(E1000_VMOLR(vfn), vmolr); |
28fc06f5 | 4050 | igb_restore_vf_multicasts(adapter); |
9d5c8243 AK |
4051 | } |
4052 | ||
13800469 GR |
4053 | static void igb_check_wvbr(struct igb_adapter *adapter) |
4054 | { | |
4055 | struct e1000_hw *hw = &adapter->hw; | |
4056 | u32 wvbr = 0; | |
4057 | ||
4058 | switch (hw->mac.type) { | |
4059 | case e1000_82576: | |
4060 | case e1000_i350: | |
81ad807b CW |
4061 | wvbr = rd32(E1000_WVBR); |
4062 | if (!wvbr) | |
13800469 GR |
4063 | return; |
4064 | break; | |
4065 | default: | |
4066 | break; | |
4067 | } | |
4068 | ||
4069 | adapter->wvbr |= wvbr; | |
4070 | } | |
4071 | ||
4072 | #define IGB_STAGGERED_QUEUE_OFFSET 8 | |
4073 | ||
4074 | static void igb_spoof_check(struct igb_adapter *adapter) | |
4075 | { | |
4076 | int j; | |
4077 | ||
4078 | if (!adapter->wvbr) | |
4079 | return; | |
4080 | ||
9005df38 | 4081 | for (j = 0; j < adapter->vfs_allocated_count; j++) { |
13800469 GR |
4082 | if (adapter->wvbr & (1 << j) || |
4083 | adapter->wvbr & (1 << (j + IGB_STAGGERED_QUEUE_OFFSET))) { | |
4084 | dev_warn(&adapter->pdev->dev, | |
4085 | "Spoof event(s) detected on VF %d\n", j); | |
4086 | adapter->wvbr &= | |
4087 | ~((1 << j) | | |
4088 | (1 << (j + IGB_STAGGERED_QUEUE_OFFSET))); | |
4089 | } | |
4090 | } | |
4091 | } | |
4092 | ||
9d5c8243 | 4093 | /* Need to wait a few seconds after link up to get diagnostic information from |
b980ac18 JK |
4094 | * the phy |
4095 | */ | |
9d5c8243 AK |
4096 | static void igb_update_phy_info(unsigned long data) |
4097 | { | |
4098 | struct igb_adapter *adapter = (struct igb_adapter *) data; | |
f5f4cf08 | 4099 | igb_get_phy_info(&adapter->hw); |
9d5c8243 AK |
4100 | } |
4101 | ||
4d6b725e | 4102 | /** |
b980ac18 JK |
4103 | * igb_has_link - check shared code for link and determine up/down |
4104 | * @adapter: pointer to driver private info | |
4d6b725e | 4105 | **/ |
3145535a | 4106 | bool igb_has_link(struct igb_adapter *adapter) |
4d6b725e AD |
4107 | { |
4108 | struct e1000_hw *hw = &adapter->hw; | |
4109 | bool link_active = false; | |
4d6b725e AD |
4110 | |
4111 | /* get_link_status is set on LSC (link status) interrupt or | |
4112 | * rx sequence error interrupt. get_link_status will stay | |
4113 | * false until the e1000_check_for_link establishes link | |
4114 | * for copper adapters ONLY | |
4115 | */ | |
4116 | switch (hw->phy.media_type) { | |
4117 | case e1000_media_type_copper: | |
e5c3370f AA |
4118 | if (!hw->mac.get_link_status) |
4119 | return true; | |
4d6b725e | 4120 | case e1000_media_type_internal_serdes: |
e5c3370f AA |
4121 | hw->mac.ops.check_for_link(hw); |
4122 | link_active = !hw->mac.get_link_status; | |
4d6b725e AD |
4123 | break; |
4124 | default: | |
4125 | case e1000_media_type_unknown: | |
4126 | break; | |
4127 | } | |
4128 | ||
aa9b8cc4 AA |
4129 | if (((hw->mac.type == e1000_i210) || |
4130 | (hw->mac.type == e1000_i211)) && | |
4131 | (hw->phy.id == I210_I_PHY_ID)) { | |
4132 | if (!netif_carrier_ok(adapter->netdev)) { | |
4133 | adapter->flags &= ~IGB_FLAG_NEED_LINK_UPDATE; | |
4134 | } else if (!(adapter->flags & IGB_FLAG_NEED_LINK_UPDATE)) { | |
4135 | adapter->flags |= IGB_FLAG_NEED_LINK_UPDATE; | |
4136 | adapter->link_check_timeout = jiffies; | |
4137 | } | |
4138 | } | |
4139 | ||
4d6b725e AD |
4140 | return link_active; |
4141 | } | |
4142 | ||
563988dc SA |
4143 | static bool igb_thermal_sensor_event(struct e1000_hw *hw, u32 event) |
4144 | { | |
4145 | bool ret = false; | |
4146 | u32 ctrl_ext, thstat; | |
4147 | ||
f96a8a0b | 4148 | /* check for thermal sensor event on i350 copper only */ |
563988dc SA |
4149 | if (hw->mac.type == e1000_i350) { |
4150 | thstat = rd32(E1000_THSTAT); | |
4151 | ctrl_ext = rd32(E1000_CTRL_EXT); | |
4152 | ||
4153 | if ((hw->phy.media_type == e1000_media_type_copper) && | |
5c17a203 | 4154 | !(ctrl_ext & E1000_CTRL_EXT_LINK_MODE_SGMII)) |
563988dc | 4155 | ret = !!(thstat & event); |
563988dc SA |
4156 | } |
4157 | ||
4158 | return ret; | |
4159 | } | |
4160 | ||
9d5c8243 | 4161 | /** |
b980ac18 JK |
4162 | * igb_watchdog - Timer Call-back |
4163 | * @data: pointer to adapter cast into an unsigned long | |
9d5c8243 AK |
4164 | **/ |
4165 | static void igb_watchdog(unsigned long data) | |
4166 | { | |
4167 | struct igb_adapter *adapter = (struct igb_adapter *)data; | |
4168 | /* Do the rest outside of interrupt context */ | |
4169 | schedule_work(&adapter->watchdog_task); | |
4170 | } | |
4171 | ||
4172 | static void igb_watchdog_task(struct work_struct *work) | |
4173 | { | |
4174 | struct igb_adapter *adapter = container_of(work, | |
b980ac18 JK |
4175 | struct igb_adapter, |
4176 | watchdog_task); | |
9d5c8243 | 4177 | struct e1000_hw *hw = &adapter->hw; |
c0ba4778 | 4178 | struct e1000_phy_info *phy = &hw->phy; |
9d5c8243 | 4179 | struct net_device *netdev = adapter->netdev; |
563988dc | 4180 | u32 link; |
7a6ea550 | 4181 | int i; |
56cec249 | 4182 | u32 connsw; |
9d5c8243 | 4183 | |
4d6b725e | 4184 | link = igb_has_link(adapter); |
aa9b8cc4 AA |
4185 | |
4186 | if (adapter->flags & IGB_FLAG_NEED_LINK_UPDATE) { | |
4187 | if (time_after(jiffies, (adapter->link_check_timeout + HZ))) | |
4188 | adapter->flags &= ~IGB_FLAG_NEED_LINK_UPDATE; | |
4189 | else | |
4190 | link = false; | |
4191 | } | |
4192 | ||
56cec249 CW |
4193 | /* Force link down if we have fiber to swap to */ |
4194 | if (adapter->flags & IGB_FLAG_MAS_ENABLE) { | |
4195 | if (hw->phy.media_type == e1000_media_type_copper) { | |
4196 | connsw = rd32(E1000_CONNSW); | |
4197 | if (!(connsw & E1000_CONNSW_AUTOSENSE_EN)) | |
4198 | link = 0; | |
4199 | } | |
4200 | } | |
9d5c8243 | 4201 | if (link) { |
2bdfc4e2 CW |
4202 | /* Perform a reset if the media type changed. */ |
4203 | if (hw->dev_spec._82575.media_changed) { | |
4204 | hw->dev_spec._82575.media_changed = false; | |
4205 | adapter->flags |= IGB_FLAG_MEDIA_RESET; | |
4206 | igb_reset(adapter); | |
4207 | } | |
749ab2cd YZ |
4208 | /* Cancel scheduled suspend requests. */ |
4209 | pm_runtime_resume(netdev->dev.parent); | |
4210 | ||
9d5c8243 AK |
4211 | if (!netif_carrier_ok(netdev)) { |
4212 | u32 ctrl; | |
9005df38 | 4213 | |
330a6d6a | 4214 | hw->mac.ops.get_speed_and_duplex(hw, |
b980ac18 JK |
4215 | &adapter->link_speed, |
4216 | &adapter->link_duplex); | |
9d5c8243 AK |
4217 | |
4218 | ctrl = rd32(E1000_CTRL); | |
527d47c1 | 4219 | /* Links status message must follow this format */ |
c75c4edf CW |
4220 | netdev_info(netdev, |
4221 | "igb: %s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n", | |
559e9c49 AD |
4222 | netdev->name, |
4223 | adapter->link_speed, | |
4224 | adapter->link_duplex == FULL_DUPLEX ? | |
876d2d6f JK |
4225 | "Full" : "Half", |
4226 | (ctrl & E1000_CTRL_TFCE) && | |
4227 | (ctrl & E1000_CTRL_RFCE) ? "RX/TX" : | |
4228 | (ctrl & E1000_CTRL_RFCE) ? "RX" : | |
4229 | (ctrl & E1000_CTRL_TFCE) ? "TX" : "None"); | |
9d5c8243 | 4230 | |
f4c01e96 CW |
4231 | /* disable EEE if enabled */ |
4232 | if ((adapter->flags & IGB_FLAG_EEE) && | |
4233 | (adapter->link_duplex == HALF_DUPLEX)) { | |
4234 | dev_info(&adapter->pdev->dev, | |
4235 | "EEE Disabled: unsupported at half duplex. Re-enable using ethtool when at full duplex.\n"); | |
4236 | adapter->hw.dev_spec._82575.eee_disable = true; | |
4237 | adapter->flags &= ~IGB_FLAG_EEE; | |
4238 | } | |
4239 | ||
c0ba4778 KS |
4240 | /* check if SmartSpeed worked */ |
4241 | igb_check_downshift(hw); | |
4242 | if (phy->speed_downgraded) | |
4243 | netdev_warn(netdev, "Link Speed was downgraded by SmartSpeed\n"); | |
4244 | ||
563988dc | 4245 | /* check for thermal sensor event */ |
876d2d6f | 4246 | if (igb_thermal_sensor_event(hw, |
d34a15ab | 4247 | E1000_THSTAT_LINK_THROTTLE)) |
c75c4edf | 4248 | netdev_info(netdev, "The network adapter link speed was downshifted because it overheated\n"); |
563988dc | 4249 | |
d07f3e37 | 4250 | /* adjust timeout factor according to speed/duplex */ |
9d5c8243 AK |
4251 | adapter->tx_timeout_factor = 1; |
4252 | switch (adapter->link_speed) { | |
4253 | case SPEED_10: | |
9d5c8243 AK |
4254 | adapter->tx_timeout_factor = 14; |
4255 | break; | |
4256 | case SPEED_100: | |
9d5c8243 AK |
4257 | /* maybe add some timeout factor ? */ |
4258 | break; | |
4259 | } | |
4260 | ||
4261 | netif_carrier_on(netdev); | |
9d5c8243 | 4262 | |
4ae196df | 4263 | igb_ping_all_vfs(adapter); |
17dc566c | 4264 | igb_check_vf_rate_limit(adapter); |
4ae196df | 4265 | |
4b1a9877 | 4266 | /* link state has changed, schedule phy info update */ |
9d5c8243 AK |
4267 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
4268 | mod_timer(&adapter->phy_info_timer, | |
4269 | round_jiffies(jiffies + 2 * HZ)); | |
4270 | } | |
4271 | } else { | |
4272 | if (netif_carrier_ok(netdev)) { | |
4273 | adapter->link_speed = 0; | |
4274 | adapter->link_duplex = 0; | |
563988dc SA |
4275 | |
4276 | /* check for thermal sensor event */ | |
876d2d6f JK |
4277 | if (igb_thermal_sensor_event(hw, |
4278 | E1000_THSTAT_PWR_DOWN)) { | |
c75c4edf | 4279 | netdev_err(netdev, "The network adapter was stopped because it overheated\n"); |
7ef5ed1c | 4280 | } |
563988dc | 4281 | |
527d47c1 | 4282 | /* Links status message must follow this format */ |
c75c4edf | 4283 | netdev_info(netdev, "igb: %s NIC Link is Down\n", |
527d47c1 | 4284 | netdev->name); |
9d5c8243 | 4285 | netif_carrier_off(netdev); |
4b1a9877 | 4286 | |
4ae196df AD |
4287 | igb_ping_all_vfs(adapter); |
4288 | ||
4b1a9877 | 4289 | /* link state has changed, schedule phy info update */ |
9d5c8243 AK |
4290 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
4291 | mod_timer(&adapter->phy_info_timer, | |
4292 | round_jiffies(jiffies + 2 * HZ)); | |
749ab2cd | 4293 | |
56cec249 CW |
4294 | /* link is down, time to check for alternate media */ |
4295 | if (adapter->flags & IGB_FLAG_MAS_ENABLE) { | |
4296 | igb_check_swap_media(adapter); | |
4297 | if (adapter->flags & IGB_FLAG_MEDIA_RESET) { | |
4298 | schedule_work(&adapter->reset_task); | |
4299 | /* return immediately */ | |
4300 | return; | |
4301 | } | |
4302 | } | |
749ab2cd YZ |
4303 | pm_schedule_suspend(netdev->dev.parent, |
4304 | MSEC_PER_SEC * 5); | |
56cec249 CW |
4305 | |
4306 | /* also check for alternate media here */ | |
4307 | } else if (!netif_carrier_ok(netdev) && | |
4308 | (adapter->flags & IGB_FLAG_MAS_ENABLE)) { | |
4309 | igb_check_swap_media(adapter); | |
4310 | if (adapter->flags & IGB_FLAG_MEDIA_RESET) { | |
4311 | schedule_work(&adapter->reset_task); | |
4312 | /* return immediately */ | |
4313 | return; | |
4314 | } | |
9d5c8243 AK |
4315 | } |
4316 | } | |
4317 | ||
12dcd86b ED |
4318 | spin_lock(&adapter->stats64_lock); |
4319 | igb_update_stats(adapter, &adapter->stats64); | |
4320 | spin_unlock(&adapter->stats64_lock); | |
9d5c8243 | 4321 | |
dbabb065 | 4322 | for (i = 0; i < adapter->num_tx_queues; i++) { |
3025a446 | 4323 | struct igb_ring *tx_ring = adapter->tx_ring[i]; |
dbabb065 | 4324 | if (!netif_carrier_ok(netdev)) { |
9d5c8243 AK |
4325 | /* We've lost link, so the controller stops DMA, |
4326 | * but we've got queued Tx work that's never going | |
4327 | * to get done, so reset controller to flush Tx. | |
b980ac18 JK |
4328 | * (Do the reset outside of interrupt context). |
4329 | */ | |
dbabb065 AD |
4330 | if (igb_desc_unused(tx_ring) + 1 < tx_ring->count) { |
4331 | adapter->tx_timeout_count++; | |
4332 | schedule_work(&adapter->reset_task); | |
4333 | /* return immediately since reset is imminent */ | |
4334 | return; | |
4335 | } | |
9d5c8243 | 4336 | } |
9d5c8243 | 4337 | |
dbabb065 | 4338 | /* Force detection of hung controller every watchdog period */ |
6d095fa8 | 4339 | set_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags); |
dbabb065 | 4340 | } |
f7ba205e | 4341 | |
b980ac18 | 4342 | /* Cause software interrupt to ensure Rx ring is cleaned */ |
cd14ef54 | 4343 | if (adapter->flags & IGB_FLAG_HAS_MSIX) { |
047e0030 | 4344 | u32 eics = 0; |
9005df38 | 4345 | |
0d1ae7f4 AD |
4346 | for (i = 0; i < adapter->num_q_vectors; i++) |
4347 | eics |= adapter->q_vector[i]->eims_value; | |
7a6ea550 AD |
4348 | wr32(E1000_EICS, eics); |
4349 | } else { | |
4350 | wr32(E1000_ICS, E1000_ICS_RXDMT0); | |
4351 | } | |
9d5c8243 | 4352 | |
13800469 | 4353 | igb_spoof_check(adapter); |
fc580751 | 4354 | igb_ptp_rx_hang(adapter); |
13800469 | 4355 | |
9d5c8243 | 4356 | /* Reset the timer */ |
aa9b8cc4 AA |
4357 | if (!test_bit(__IGB_DOWN, &adapter->state)) { |
4358 | if (adapter->flags & IGB_FLAG_NEED_LINK_UPDATE) | |
4359 | mod_timer(&adapter->watchdog_timer, | |
4360 | round_jiffies(jiffies + HZ)); | |
4361 | else | |
4362 | mod_timer(&adapter->watchdog_timer, | |
4363 | round_jiffies(jiffies + 2 * HZ)); | |
4364 | } | |
9d5c8243 AK |
4365 | } |
4366 | ||
4367 | enum latency_range { | |
4368 | lowest_latency = 0, | |
4369 | low_latency = 1, | |
4370 | bulk_latency = 2, | |
4371 | latency_invalid = 255 | |
4372 | }; | |
4373 | ||
6eb5a7f1 | 4374 | /** |
b980ac18 JK |
4375 | * igb_update_ring_itr - update the dynamic ITR value based on packet size |
4376 | * @q_vector: pointer to q_vector | |
6eb5a7f1 | 4377 | * |
b980ac18 JK |
4378 | * Stores a new ITR value based on strictly on packet size. This |
4379 | * algorithm is less sophisticated than that used in igb_update_itr, | |
4380 | * due to the difficulty of synchronizing statistics across multiple | |
4381 | * receive rings. The divisors and thresholds used by this function | |
4382 | * were determined based on theoretical maximum wire speed and testing | |
4383 | * data, in order to minimize response time while increasing bulk | |
4384 | * throughput. | |
406d4965 | 4385 | * This functionality is controlled by ethtool's coalescing settings. |
b980ac18 JK |
4386 | * NOTE: This function is called only when operating in a multiqueue |
4387 | * receive environment. | |
6eb5a7f1 | 4388 | **/ |
047e0030 | 4389 | static void igb_update_ring_itr(struct igb_q_vector *q_vector) |
9d5c8243 | 4390 | { |
047e0030 | 4391 | int new_val = q_vector->itr_val; |
6eb5a7f1 | 4392 | int avg_wire_size = 0; |
047e0030 | 4393 | struct igb_adapter *adapter = q_vector->adapter; |
12dcd86b | 4394 | unsigned int packets; |
9d5c8243 | 4395 | |
6eb5a7f1 AD |
4396 | /* For non-gigabit speeds, just fix the interrupt rate at 4000 |
4397 | * ints/sec - ITR timer value of 120 ticks. | |
4398 | */ | |
4399 | if (adapter->link_speed != SPEED_1000) { | |
0ba82994 | 4400 | new_val = IGB_4K_ITR; |
6eb5a7f1 | 4401 | goto set_itr_val; |
9d5c8243 | 4402 | } |
047e0030 | 4403 | |
0ba82994 AD |
4404 | packets = q_vector->rx.total_packets; |
4405 | if (packets) | |
4406 | avg_wire_size = q_vector->rx.total_bytes / packets; | |
047e0030 | 4407 | |
0ba82994 AD |
4408 | packets = q_vector->tx.total_packets; |
4409 | if (packets) | |
4410 | avg_wire_size = max_t(u32, avg_wire_size, | |
4411 | q_vector->tx.total_bytes / packets); | |
047e0030 AD |
4412 | |
4413 | /* if avg_wire_size isn't set no work was done */ | |
4414 | if (!avg_wire_size) | |
4415 | goto clear_counts; | |
9d5c8243 | 4416 | |
6eb5a7f1 AD |
4417 | /* Add 24 bytes to size to account for CRC, preamble, and gap */ |
4418 | avg_wire_size += 24; | |
4419 | ||
4420 | /* Don't starve jumbo frames */ | |
4421 | avg_wire_size = min(avg_wire_size, 3000); | |
9d5c8243 | 4422 | |
6eb5a7f1 AD |
4423 | /* Give a little boost to mid-size frames */ |
4424 | if ((avg_wire_size > 300) && (avg_wire_size < 1200)) | |
4425 | new_val = avg_wire_size / 3; | |
4426 | else | |
4427 | new_val = avg_wire_size / 2; | |
9d5c8243 | 4428 | |
0ba82994 AD |
4429 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
4430 | if (new_val < IGB_20K_ITR && | |
4431 | ((q_vector->rx.ring && adapter->rx_itr_setting == 3) || | |
4432 | (!q_vector->rx.ring && adapter->tx_itr_setting == 3))) | |
4433 | new_val = IGB_20K_ITR; | |
abe1c363 | 4434 | |
6eb5a7f1 | 4435 | set_itr_val: |
047e0030 AD |
4436 | if (new_val != q_vector->itr_val) { |
4437 | q_vector->itr_val = new_val; | |
4438 | q_vector->set_itr = 1; | |
9d5c8243 | 4439 | } |
6eb5a7f1 | 4440 | clear_counts: |
0ba82994 AD |
4441 | q_vector->rx.total_bytes = 0; |
4442 | q_vector->rx.total_packets = 0; | |
4443 | q_vector->tx.total_bytes = 0; | |
4444 | q_vector->tx.total_packets = 0; | |
9d5c8243 AK |
4445 | } |
4446 | ||
4447 | /** | |
b980ac18 JK |
4448 | * igb_update_itr - update the dynamic ITR value based on statistics |
4449 | * @q_vector: pointer to q_vector | |
4450 | * @ring_container: ring info to update the itr for | |
4451 | * | |
4452 | * Stores a new ITR value based on packets and byte | |
4453 | * counts during the last interrupt. The advantage of per interrupt | |
4454 | * computation is faster updates and more accurate ITR for the current | |
4455 | * traffic pattern. Constants in this function were computed | |
4456 | * based on theoretical maximum wire speed and thresholds were set based | |
4457 | * on testing data as well as attempting to minimize response time | |
4458 | * while increasing bulk throughput. | |
406d4965 | 4459 | * This functionality is controlled by ethtool's coalescing settings. |
b980ac18 JK |
4460 | * NOTE: These calculations are only valid when operating in a single- |
4461 | * queue environment. | |
9d5c8243 | 4462 | **/ |
0ba82994 AD |
4463 | static void igb_update_itr(struct igb_q_vector *q_vector, |
4464 | struct igb_ring_container *ring_container) | |
9d5c8243 | 4465 | { |
0ba82994 AD |
4466 | unsigned int packets = ring_container->total_packets; |
4467 | unsigned int bytes = ring_container->total_bytes; | |
4468 | u8 itrval = ring_container->itr; | |
9d5c8243 | 4469 | |
0ba82994 | 4470 | /* no packets, exit with status unchanged */ |
9d5c8243 | 4471 | if (packets == 0) |
0ba82994 | 4472 | return; |
9d5c8243 | 4473 | |
0ba82994 | 4474 | switch (itrval) { |
9d5c8243 AK |
4475 | case lowest_latency: |
4476 | /* handle TSO and jumbo frames */ | |
4477 | if (bytes/packets > 8000) | |
0ba82994 | 4478 | itrval = bulk_latency; |
9d5c8243 | 4479 | else if ((packets < 5) && (bytes > 512)) |
0ba82994 | 4480 | itrval = low_latency; |
9d5c8243 AK |
4481 | break; |
4482 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
4483 | if (bytes > 10000) { | |
4484 | /* this if handles the TSO accounting */ | |
d34a15ab | 4485 | if (bytes/packets > 8000) |
0ba82994 | 4486 | itrval = bulk_latency; |
d34a15ab | 4487 | else if ((packets < 10) || ((bytes/packets) > 1200)) |
0ba82994 | 4488 | itrval = bulk_latency; |
d34a15ab | 4489 | else if ((packets > 35)) |
0ba82994 | 4490 | itrval = lowest_latency; |
9d5c8243 | 4491 | } else if (bytes/packets > 2000) { |
0ba82994 | 4492 | itrval = bulk_latency; |
9d5c8243 | 4493 | } else if (packets <= 2 && bytes < 512) { |
0ba82994 | 4494 | itrval = lowest_latency; |
9d5c8243 AK |
4495 | } |
4496 | break; | |
4497 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
4498 | if (bytes > 25000) { | |
4499 | if (packets > 35) | |
0ba82994 | 4500 | itrval = low_latency; |
1e5c3d21 | 4501 | } else if (bytes < 1500) { |
0ba82994 | 4502 | itrval = low_latency; |
9d5c8243 AK |
4503 | } |
4504 | break; | |
4505 | } | |
4506 | ||
0ba82994 AD |
4507 | /* clear work counters since we have the values we need */ |
4508 | ring_container->total_bytes = 0; | |
4509 | ring_container->total_packets = 0; | |
4510 | ||
4511 | /* write updated itr to ring container */ | |
4512 | ring_container->itr = itrval; | |
9d5c8243 AK |
4513 | } |
4514 | ||
0ba82994 | 4515 | static void igb_set_itr(struct igb_q_vector *q_vector) |
9d5c8243 | 4516 | { |
0ba82994 | 4517 | struct igb_adapter *adapter = q_vector->adapter; |
047e0030 | 4518 | u32 new_itr = q_vector->itr_val; |
0ba82994 | 4519 | u8 current_itr = 0; |
9d5c8243 AK |
4520 | |
4521 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ | |
4522 | if (adapter->link_speed != SPEED_1000) { | |
4523 | current_itr = 0; | |
0ba82994 | 4524 | new_itr = IGB_4K_ITR; |
9d5c8243 AK |
4525 | goto set_itr_now; |
4526 | } | |
4527 | ||
0ba82994 AD |
4528 | igb_update_itr(q_vector, &q_vector->tx); |
4529 | igb_update_itr(q_vector, &q_vector->rx); | |
9d5c8243 | 4530 | |
0ba82994 | 4531 | current_itr = max(q_vector->rx.itr, q_vector->tx.itr); |
9d5c8243 | 4532 | |
6eb5a7f1 | 4533 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
0ba82994 AD |
4534 | if (current_itr == lowest_latency && |
4535 | ((q_vector->rx.ring && adapter->rx_itr_setting == 3) || | |
4536 | (!q_vector->rx.ring && adapter->tx_itr_setting == 3))) | |
6eb5a7f1 AD |
4537 | current_itr = low_latency; |
4538 | ||
9d5c8243 AK |
4539 | switch (current_itr) { |
4540 | /* counts and packets in update_itr are dependent on these numbers */ | |
4541 | case lowest_latency: | |
0ba82994 | 4542 | new_itr = IGB_70K_ITR; /* 70,000 ints/sec */ |
9d5c8243 AK |
4543 | break; |
4544 | case low_latency: | |
0ba82994 | 4545 | new_itr = IGB_20K_ITR; /* 20,000 ints/sec */ |
9d5c8243 AK |
4546 | break; |
4547 | case bulk_latency: | |
0ba82994 | 4548 | new_itr = IGB_4K_ITR; /* 4,000 ints/sec */ |
9d5c8243 AK |
4549 | break; |
4550 | default: | |
4551 | break; | |
4552 | } | |
4553 | ||
4554 | set_itr_now: | |
047e0030 | 4555 | if (new_itr != q_vector->itr_val) { |
9d5c8243 AK |
4556 | /* this attempts to bias the interrupt rate towards Bulk |
4557 | * by adding intermediate steps when interrupt rate is | |
b980ac18 JK |
4558 | * increasing |
4559 | */ | |
047e0030 | 4560 | new_itr = new_itr > q_vector->itr_val ? |
b980ac18 JK |
4561 | max((new_itr * q_vector->itr_val) / |
4562 | (new_itr + (q_vector->itr_val >> 2)), | |
4563 | new_itr) : new_itr; | |
9d5c8243 AK |
4564 | /* Don't write the value here; it resets the adapter's |
4565 | * internal timer, and causes us to delay far longer than | |
4566 | * we should between interrupts. Instead, we write the ITR | |
4567 | * value at the beginning of the next interrupt so the timing | |
4568 | * ends up being correct. | |
4569 | */ | |
047e0030 AD |
4570 | q_vector->itr_val = new_itr; |
4571 | q_vector->set_itr = 1; | |
9d5c8243 | 4572 | } |
9d5c8243 AK |
4573 | } |
4574 | ||
c50b52a0 SH |
4575 | static void igb_tx_ctxtdesc(struct igb_ring *tx_ring, u32 vlan_macip_lens, |
4576 | u32 type_tucmd, u32 mss_l4len_idx) | |
7d13a7d0 AD |
4577 | { |
4578 | struct e1000_adv_tx_context_desc *context_desc; | |
4579 | u16 i = tx_ring->next_to_use; | |
4580 | ||
4581 | context_desc = IGB_TX_CTXTDESC(tx_ring, i); | |
4582 | ||
4583 | i++; | |
4584 | tx_ring->next_to_use = (i < tx_ring->count) ? i : 0; | |
4585 | ||
4586 | /* set bits to identify this as an advanced context descriptor */ | |
4587 | type_tucmd |= E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT; | |
4588 | ||
4589 | /* For 82575, context index must be unique per ring. */ | |
866cff06 | 4590 | if (test_bit(IGB_RING_FLAG_TX_CTX_IDX, &tx_ring->flags)) |
7d13a7d0 AD |
4591 | mss_l4len_idx |= tx_ring->reg_idx << 4; |
4592 | ||
4593 | context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); | |
4594 | context_desc->seqnum_seed = 0; | |
4595 | context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd); | |
4596 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); | |
4597 | } | |
4598 | ||
7af40ad9 AD |
4599 | static int igb_tso(struct igb_ring *tx_ring, |
4600 | struct igb_tx_buffer *first, | |
4601 | u8 *hdr_len) | |
9d5c8243 | 4602 | { |
7af40ad9 | 4603 | struct sk_buff *skb = first->skb; |
7d13a7d0 AD |
4604 | u32 vlan_macip_lens, type_tucmd; |
4605 | u32 mss_l4len_idx, l4len; | |
06c14e5a | 4606 | int err; |
7d13a7d0 | 4607 | |
ed6aa105 AD |
4608 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
4609 | return 0; | |
4610 | ||
7d13a7d0 AD |
4611 | if (!skb_is_gso(skb)) |
4612 | return 0; | |
9d5c8243 | 4613 | |
06c14e5a FR |
4614 | err = skb_cow_head(skb, 0); |
4615 | if (err < 0) | |
4616 | return err; | |
9d5c8243 | 4617 | |
7d13a7d0 AD |
4618 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ |
4619 | type_tucmd = E1000_ADVTXD_TUCMD_L4T_TCP; | |
9d5c8243 | 4620 | |
7c4d16ff | 4621 | if (first->protocol == htons(ETH_P_IP)) { |
9d5c8243 AK |
4622 | struct iphdr *iph = ip_hdr(skb); |
4623 | iph->tot_len = 0; | |
4624 | iph->check = 0; | |
4625 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, | |
4626 | iph->daddr, 0, | |
4627 | IPPROTO_TCP, | |
4628 | 0); | |
7d13a7d0 | 4629 | type_tucmd |= E1000_ADVTXD_TUCMD_IPV4; |
7af40ad9 AD |
4630 | first->tx_flags |= IGB_TX_FLAGS_TSO | |
4631 | IGB_TX_FLAGS_CSUM | | |
4632 | IGB_TX_FLAGS_IPV4; | |
8e1e8a47 | 4633 | } else if (skb_is_gso_v6(skb)) { |
9d5c8243 AK |
4634 | ipv6_hdr(skb)->payload_len = 0; |
4635 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
4636 | &ipv6_hdr(skb)->daddr, | |
4637 | 0, IPPROTO_TCP, 0); | |
7af40ad9 AD |
4638 | first->tx_flags |= IGB_TX_FLAGS_TSO | |
4639 | IGB_TX_FLAGS_CSUM; | |
9d5c8243 AK |
4640 | } |
4641 | ||
7af40ad9 | 4642 | /* compute header lengths */ |
7d13a7d0 AD |
4643 | l4len = tcp_hdrlen(skb); |
4644 | *hdr_len = skb_transport_offset(skb) + l4len; | |
9d5c8243 | 4645 | |
7af40ad9 AD |
4646 | /* update gso size and bytecount with header size */ |
4647 | first->gso_segs = skb_shinfo(skb)->gso_segs; | |
4648 | first->bytecount += (first->gso_segs - 1) * *hdr_len; | |
4649 | ||
9d5c8243 | 4650 | /* MSS L4LEN IDX */ |
7d13a7d0 AD |
4651 | mss_l4len_idx = l4len << E1000_ADVTXD_L4LEN_SHIFT; |
4652 | mss_l4len_idx |= skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT; | |
9d5c8243 | 4653 | |
7d13a7d0 AD |
4654 | /* VLAN MACLEN IPLEN */ |
4655 | vlan_macip_lens = skb_network_header_len(skb); | |
4656 | vlan_macip_lens |= skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT; | |
7af40ad9 | 4657 | vlan_macip_lens |= first->tx_flags & IGB_TX_FLAGS_VLAN_MASK; |
9d5c8243 | 4658 | |
7d13a7d0 | 4659 | igb_tx_ctxtdesc(tx_ring, vlan_macip_lens, type_tucmd, mss_l4len_idx); |
9d5c8243 | 4660 | |
7d13a7d0 | 4661 | return 1; |
9d5c8243 AK |
4662 | } |
4663 | ||
7af40ad9 | 4664 | static void igb_tx_csum(struct igb_ring *tx_ring, struct igb_tx_buffer *first) |
9d5c8243 | 4665 | { |
7af40ad9 | 4666 | struct sk_buff *skb = first->skb; |
7d13a7d0 AD |
4667 | u32 vlan_macip_lens = 0; |
4668 | u32 mss_l4len_idx = 0; | |
4669 | u32 type_tucmd = 0; | |
9d5c8243 | 4670 | |
7d13a7d0 | 4671 | if (skb->ip_summed != CHECKSUM_PARTIAL) { |
7af40ad9 AD |
4672 | if (!(first->tx_flags & IGB_TX_FLAGS_VLAN)) |
4673 | return; | |
7d13a7d0 AD |
4674 | } else { |
4675 | u8 l4_hdr = 0; | |
9005df38 | 4676 | |
7af40ad9 | 4677 | switch (first->protocol) { |
7c4d16ff | 4678 | case htons(ETH_P_IP): |
7d13a7d0 AD |
4679 | vlan_macip_lens |= skb_network_header_len(skb); |
4680 | type_tucmd |= E1000_ADVTXD_TUCMD_IPV4; | |
4681 | l4_hdr = ip_hdr(skb)->protocol; | |
4682 | break; | |
7c4d16ff | 4683 | case htons(ETH_P_IPV6): |
7d13a7d0 AD |
4684 | vlan_macip_lens |= skb_network_header_len(skb); |
4685 | l4_hdr = ipv6_hdr(skb)->nexthdr; | |
4686 | break; | |
4687 | default: | |
4688 | if (unlikely(net_ratelimit())) { | |
4689 | dev_warn(tx_ring->dev, | |
b980ac18 JK |
4690 | "partial checksum but proto=%x!\n", |
4691 | first->protocol); | |
fa4a7ef3 | 4692 | } |
7d13a7d0 AD |
4693 | break; |
4694 | } | |
fa4a7ef3 | 4695 | |
7d13a7d0 AD |
4696 | switch (l4_hdr) { |
4697 | case IPPROTO_TCP: | |
4698 | type_tucmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
4699 | mss_l4len_idx = tcp_hdrlen(skb) << | |
4700 | E1000_ADVTXD_L4LEN_SHIFT; | |
4701 | break; | |
4702 | case IPPROTO_SCTP: | |
4703 | type_tucmd |= E1000_ADVTXD_TUCMD_L4T_SCTP; | |
4704 | mss_l4len_idx = sizeof(struct sctphdr) << | |
4705 | E1000_ADVTXD_L4LEN_SHIFT; | |
4706 | break; | |
4707 | case IPPROTO_UDP: | |
4708 | mss_l4len_idx = sizeof(struct udphdr) << | |
4709 | E1000_ADVTXD_L4LEN_SHIFT; | |
4710 | break; | |
4711 | default: | |
4712 | if (unlikely(net_ratelimit())) { | |
4713 | dev_warn(tx_ring->dev, | |
b980ac18 JK |
4714 | "partial checksum but l4 proto=%x!\n", |
4715 | l4_hdr); | |
44b0cda3 | 4716 | } |
7d13a7d0 | 4717 | break; |
9d5c8243 | 4718 | } |
7af40ad9 AD |
4719 | |
4720 | /* update TX checksum flag */ | |
4721 | first->tx_flags |= IGB_TX_FLAGS_CSUM; | |
7d13a7d0 | 4722 | } |
9d5c8243 | 4723 | |
7d13a7d0 | 4724 | vlan_macip_lens |= skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT; |
7af40ad9 | 4725 | vlan_macip_lens |= first->tx_flags & IGB_TX_FLAGS_VLAN_MASK; |
9d5c8243 | 4726 | |
7d13a7d0 | 4727 | igb_tx_ctxtdesc(tx_ring, vlan_macip_lens, type_tucmd, mss_l4len_idx); |
9d5c8243 AK |
4728 | } |
4729 | ||
1d9daf45 AD |
4730 | #define IGB_SET_FLAG(_input, _flag, _result) \ |
4731 | ((_flag <= _result) ? \ | |
4732 | ((u32)(_input & _flag) * (_result / _flag)) : \ | |
4733 | ((u32)(_input & _flag) / (_flag / _result))) | |
4734 | ||
4735 | static u32 igb_tx_cmd_type(struct sk_buff *skb, u32 tx_flags) | |
e032afc8 AD |
4736 | { |
4737 | /* set type for advanced descriptor with frame checksum insertion */ | |
1d9daf45 AD |
4738 | u32 cmd_type = E1000_ADVTXD_DTYP_DATA | |
4739 | E1000_ADVTXD_DCMD_DEXT | | |
4740 | E1000_ADVTXD_DCMD_IFCS; | |
e032afc8 AD |
4741 | |
4742 | /* set HW vlan bit if vlan is present */ | |
1d9daf45 AD |
4743 | cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_VLAN, |
4744 | (E1000_ADVTXD_DCMD_VLE)); | |
4745 | ||
4746 | /* set segmentation bits for TSO */ | |
4747 | cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_TSO, | |
4748 | (E1000_ADVTXD_DCMD_TSE)); | |
e032afc8 AD |
4749 | |
4750 | /* set timestamp bit if present */ | |
1d9daf45 AD |
4751 | cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_TSTAMP, |
4752 | (E1000_ADVTXD_MAC_TSTAMP)); | |
e032afc8 | 4753 | |
1d9daf45 AD |
4754 | /* insert frame checksum */ |
4755 | cmd_type ^= IGB_SET_FLAG(skb->no_fcs, 1, E1000_ADVTXD_DCMD_IFCS); | |
e032afc8 AD |
4756 | |
4757 | return cmd_type; | |
4758 | } | |
4759 | ||
7af40ad9 AD |
4760 | static void igb_tx_olinfo_status(struct igb_ring *tx_ring, |
4761 | union e1000_adv_tx_desc *tx_desc, | |
4762 | u32 tx_flags, unsigned int paylen) | |
e032afc8 AD |
4763 | { |
4764 | u32 olinfo_status = paylen << E1000_ADVTXD_PAYLEN_SHIFT; | |
4765 | ||
1d9daf45 AD |
4766 | /* 82575 requires a unique index per ring */ |
4767 | if (test_bit(IGB_RING_FLAG_TX_CTX_IDX, &tx_ring->flags)) | |
e032afc8 AD |
4768 | olinfo_status |= tx_ring->reg_idx << 4; |
4769 | ||
4770 | /* insert L4 checksum */ | |
1d9daf45 AD |
4771 | olinfo_status |= IGB_SET_FLAG(tx_flags, |
4772 | IGB_TX_FLAGS_CSUM, | |
4773 | (E1000_TXD_POPTS_TXSM << 8)); | |
e032afc8 | 4774 | |
1d9daf45 AD |
4775 | /* insert IPv4 checksum */ |
4776 | olinfo_status |= IGB_SET_FLAG(tx_flags, | |
4777 | IGB_TX_FLAGS_IPV4, | |
4778 | (E1000_TXD_POPTS_IXSM << 8)); | |
e032afc8 | 4779 | |
7af40ad9 | 4780 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); |
e032afc8 AD |
4781 | } |
4782 | ||
7af40ad9 AD |
4783 | static void igb_tx_map(struct igb_ring *tx_ring, |
4784 | struct igb_tx_buffer *first, | |
ebe42d16 | 4785 | const u8 hdr_len) |
9d5c8243 | 4786 | { |
7af40ad9 | 4787 | struct sk_buff *skb = first->skb; |
c9f14bf3 | 4788 | struct igb_tx_buffer *tx_buffer; |
ebe42d16 | 4789 | union e1000_adv_tx_desc *tx_desc; |
80d0759e | 4790 | struct skb_frag_struct *frag; |
ebe42d16 | 4791 | dma_addr_t dma; |
80d0759e | 4792 | unsigned int data_len, size; |
7af40ad9 | 4793 | u32 tx_flags = first->tx_flags; |
1d9daf45 | 4794 | u32 cmd_type = igb_tx_cmd_type(skb, tx_flags); |
ebe42d16 | 4795 | u16 i = tx_ring->next_to_use; |
ebe42d16 AD |
4796 | |
4797 | tx_desc = IGB_TX_DESC(tx_ring, i); | |
4798 | ||
80d0759e AD |
4799 | igb_tx_olinfo_status(tx_ring, tx_desc, tx_flags, skb->len - hdr_len); |
4800 | ||
4801 | size = skb_headlen(skb); | |
4802 | data_len = skb->data_len; | |
ebe42d16 AD |
4803 | |
4804 | dma = dma_map_single(tx_ring->dev, skb->data, size, DMA_TO_DEVICE); | |
9d5c8243 | 4805 | |
80d0759e AD |
4806 | tx_buffer = first; |
4807 | ||
4808 | for (frag = &skb_shinfo(skb)->frags[0];; frag++) { | |
4809 | if (dma_mapping_error(tx_ring->dev, dma)) | |
4810 | goto dma_error; | |
4811 | ||
4812 | /* record length, and DMA address */ | |
4813 | dma_unmap_len_set(tx_buffer, len, size); | |
4814 | dma_unmap_addr_set(tx_buffer, dma, dma); | |
4815 | ||
4816 | tx_desc->read.buffer_addr = cpu_to_le64(dma); | |
ebe42d16 | 4817 | |
ebe42d16 AD |
4818 | while (unlikely(size > IGB_MAX_DATA_PER_TXD)) { |
4819 | tx_desc->read.cmd_type_len = | |
1d9daf45 | 4820 | cpu_to_le32(cmd_type ^ IGB_MAX_DATA_PER_TXD); |
ebe42d16 AD |
4821 | |
4822 | i++; | |
4823 | tx_desc++; | |
4824 | if (i == tx_ring->count) { | |
4825 | tx_desc = IGB_TX_DESC(tx_ring, 0); | |
4826 | i = 0; | |
4827 | } | |
80d0759e | 4828 | tx_desc->read.olinfo_status = 0; |
ebe42d16 AD |
4829 | |
4830 | dma += IGB_MAX_DATA_PER_TXD; | |
4831 | size -= IGB_MAX_DATA_PER_TXD; | |
4832 | ||
ebe42d16 AD |
4833 | tx_desc->read.buffer_addr = cpu_to_le64(dma); |
4834 | } | |
4835 | ||
4836 | if (likely(!data_len)) | |
4837 | break; | |
2bbfebe2 | 4838 | |
1d9daf45 | 4839 | tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type ^ size); |
9d5c8243 | 4840 | |
65689fef | 4841 | i++; |
ebe42d16 AD |
4842 | tx_desc++; |
4843 | if (i == tx_ring->count) { | |
4844 | tx_desc = IGB_TX_DESC(tx_ring, 0); | |
65689fef | 4845 | i = 0; |
ebe42d16 | 4846 | } |
80d0759e | 4847 | tx_desc->read.olinfo_status = 0; |
65689fef | 4848 | |
9e903e08 | 4849 | size = skb_frag_size(frag); |
ebe42d16 AD |
4850 | data_len -= size; |
4851 | ||
4852 | dma = skb_frag_dma_map(tx_ring->dev, frag, 0, | |
80d0759e | 4853 | size, DMA_TO_DEVICE); |
6366ad33 | 4854 | |
c9f14bf3 | 4855 | tx_buffer = &tx_ring->tx_buffer_info[i]; |
9d5c8243 AK |
4856 | } |
4857 | ||
ebe42d16 | 4858 | /* write last descriptor with RS and EOP bits */ |
1d9daf45 AD |
4859 | cmd_type |= size | IGB_TXD_DCMD; |
4860 | tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type); | |
8542db05 | 4861 | |
80d0759e AD |
4862 | netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount); |
4863 | ||
8542db05 AD |
4864 | /* set the timestamp */ |
4865 | first->time_stamp = jiffies; | |
4866 | ||
b980ac18 | 4867 | /* Force memory writes to complete before letting h/w know there |
ebe42d16 AD |
4868 | * are new descriptors to fetch. (Only applicable for weak-ordered |
4869 | * memory model archs, such as IA-64). | |
4870 | * | |
4871 | * We also need this memory barrier to make certain all of the | |
4872 | * status bits have been updated before next_to_watch is written. | |
4873 | */ | |
4874 | wmb(); | |
4875 | ||
8542db05 | 4876 | /* set next_to_watch value indicating a packet is present */ |
ebe42d16 | 4877 | first->next_to_watch = tx_desc; |
9d5c8243 | 4878 | |
ebe42d16 AD |
4879 | i++; |
4880 | if (i == tx_ring->count) | |
4881 | i = 0; | |
6366ad33 | 4882 | |
ebe42d16 | 4883 | tx_ring->next_to_use = i; |
6366ad33 | 4884 | |
ebe42d16 | 4885 | writel(i, tx_ring->tail); |
6366ad33 | 4886 | |
ebe42d16 | 4887 | /* we need this if more than one processor can write to our tail |
b980ac18 JK |
4888 | * at a time, it synchronizes IO on IA64/Altix systems |
4889 | */ | |
ebe42d16 AD |
4890 | mmiowb(); |
4891 | ||
4892 | return; | |
4893 | ||
4894 | dma_error: | |
4895 | dev_err(tx_ring->dev, "TX DMA map failed\n"); | |
4896 | ||
4897 | /* clear dma mappings for failed tx_buffer_info map */ | |
4898 | for (;;) { | |
c9f14bf3 AD |
4899 | tx_buffer = &tx_ring->tx_buffer_info[i]; |
4900 | igb_unmap_and_free_tx_resource(tx_ring, tx_buffer); | |
4901 | if (tx_buffer == first) | |
ebe42d16 | 4902 | break; |
a77ff709 NN |
4903 | if (i == 0) |
4904 | i = tx_ring->count; | |
6366ad33 | 4905 | i--; |
6366ad33 AD |
4906 | } |
4907 | ||
9d5c8243 | 4908 | tx_ring->next_to_use = i; |
9d5c8243 AK |
4909 | } |
4910 | ||
6ad4edfc | 4911 | static int __igb_maybe_stop_tx(struct igb_ring *tx_ring, const u16 size) |
9d5c8243 | 4912 | { |
e694e964 AD |
4913 | struct net_device *netdev = tx_ring->netdev; |
4914 | ||
661086df | 4915 | netif_stop_subqueue(netdev, tx_ring->queue_index); |
661086df | 4916 | |
9d5c8243 AK |
4917 | /* Herbert's original patch had: |
4918 | * smp_mb__after_netif_stop_queue(); | |
b980ac18 JK |
4919 | * but since that doesn't exist yet, just open code it. |
4920 | */ | |
9d5c8243 AK |
4921 | smp_mb(); |
4922 | ||
4923 | /* We need to check again in a case another CPU has just | |
b980ac18 JK |
4924 | * made room available. |
4925 | */ | |
c493ea45 | 4926 | if (igb_desc_unused(tx_ring) < size) |
9d5c8243 AK |
4927 | return -EBUSY; |
4928 | ||
4929 | /* A reprieve! */ | |
661086df | 4930 | netif_wake_subqueue(netdev, tx_ring->queue_index); |
12dcd86b ED |
4931 | |
4932 | u64_stats_update_begin(&tx_ring->tx_syncp2); | |
4933 | tx_ring->tx_stats.restart_queue2++; | |
4934 | u64_stats_update_end(&tx_ring->tx_syncp2); | |
4935 | ||
9d5c8243 AK |
4936 | return 0; |
4937 | } | |
4938 | ||
6ad4edfc | 4939 | static inline int igb_maybe_stop_tx(struct igb_ring *tx_ring, const u16 size) |
9d5c8243 | 4940 | { |
c493ea45 | 4941 | if (igb_desc_unused(tx_ring) >= size) |
9d5c8243 | 4942 | return 0; |
e694e964 | 4943 | return __igb_maybe_stop_tx(tx_ring, size); |
9d5c8243 AK |
4944 | } |
4945 | ||
cd392f5c AD |
4946 | netdev_tx_t igb_xmit_frame_ring(struct sk_buff *skb, |
4947 | struct igb_ring *tx_ring) | |
9d5c8243 | 4948 | { |
8542db05 | 4949 | struct igb_tx_buffer *first; |
ebe42d16 | 4950 | int tso; |
91d4ee33 | 4951 | u32 tx_flags = 0; |
21ba6fe1 | 4952 | u16 count = TXD_USE_COUNT(skb_headlen(skb)); |
31f6adbb | 4953 | __be16 protocol = vlan_get_protocol(skb); |
91d4ee33 | 4954 | u8 hdr_len = 0; |
9d5c8243 | 4955 | |
21ba6fe1 AD |
4956 | /* need: 1 descriptor per page * PAGE_SIZE/IGB_MAX_DATA_PER_TXD, |
4957 | * + 1 desc for skb_headlen/IGB_MAX_DATA_PER_TXD, | |
9d5c8243 | 4958 | * + 2 desc gap to keep tail from touching head, |
9d5c8243 | 4959 | * + 1 desc for context descriptor, |
21ba6fe1 AD |
4960 | * otherwise try next time |
4961 | */ | |
4962 | if (NETDEV_FRAG_PAGE_MAX_SIZE > IGB_MAX_DATA_PER_TXD) { | |
4963 | unsigned short f; | |
9005df38 | 4964 | |
21ba6fe1 AD |
4965 | for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) |
4966 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size); | |
4967 | } else { | |
4968 | count += skb_shinfo(skb)->nr_frags; | |
4969 | } | |
4970 | ||
4971 | if (igb_maybe_stop_tx(tx_ring, count + 3)) { | |
9d5c8243 | 4972 | /* this is a hard error */ |
9d5c8243 AK |
4973 | return NETDEV_TX_BUSY; |
4974 | } | |
33af6bcc | 4975 | |
7af40ad9 AD |
4976 | /* record the location of the first descriptor for this packet */ |
4977 | first = &tx_ring->tx_buffer_info[tx_ring->next_to_use]; | |
4978 | first->skb = skb; | |
4979 | first->bytecount = skb->len; | |
4980 | first->gso_segs = 1; | |
4981 | ||
b646c22e AD |
4982 | if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) { |
4983 | struct igb_adapter *adapter = netdev_priv(tx_ring->netdev); | |
1f6e8178 | 4984 | |
ed4420a3 JK |
4985 | if (!test_and_set_bit_lock(__IGB_PTP_TX_IN_PROGRESS, |
4986 | &adapter->state)) { | |
b646c22e AD |
4987 | skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; |
4988 | tx_flags |= IGB_TX_FLAGS_TSTAMP; | |
4989 | ||
4990 | adapter->ptp_tx_skb = skb_get(skb); | |
4991 | adapter->ptp_tx_start = jiffies; | |
4992 | if (adapter->hw.mac.type == e1000_82576) | |
4993 | schedule_work(&adapter->ptp_tx_work); | |
4994 | } | |
33af6bcc | 4995 | } |
9d5c8243 | 4996 | |
afc835d1 JK |
4997 | skb_tx_timestamp(skb); |
4998 | ||
eab6d18d | 4999 | if (vlan_tx_tag_present(skb)) { |
9d5c8243 AK |
5000 | tx_flags |= IGB_TX_FLAGS_VLAN; |
5001 | tx_flags |= (vlan_tx_tag_get(skb) << IGB_TX_FLAGS_VLAN_SHIFT); | |
5002 | } | |
5003 | ||
7af40ad9 AD |
5004 | /* record initial flags and protocol */ |
5005 | first->tx_flags = tx_flags; | |
5006 | first->protocol = protocol; | |
cdfd01fc | 5007 | |
7af40ad9 AD |
5008 | tso = igb_tso(tx_ring, first, &hdr_len); |
5009 | if (tso < 0) | |
7d13a7d0 | 5010 | goto out_drop; |
7af40ad9 AD |
5011 | else if (!tso) |
5012 | igb_tx_csum(tx_ring, first); | |
9d5c8243 | 5013 | |
7af40ad9 | 5014 | igb_tx_map(tx_ring, first, hdr_len); |
85ad76b2 AD |
5015 | |
5016 | /* Make sure there is space in the ring for the next send. */ | |
21ba6fe1 | 5017 | igb_maybe_stop_tx(tx_ring, DESC_NEEDED); |
85ad76b2 | 5018 | |
9d5c8243 | 5019 | return NETDEV_TX_OK; |
7d13a7d0 AD |
5020 | |
5021 | out_drop: | |
7af40ad9 AD |
5022 | igb_unmap_and_free_tx_resource(tx_ring, first); |
5023 | ||
7d13a7d0 | 5024 | return NETDEV_TX_OK; |
9d5c8243 AK |
5025 | } |
5026 | ||
1cc3bd87 AD |
5027 | static inline struct igb_ring *igb_tx_queue_mapping(struct igb_adapter *adapter, |
5028 | struct sk_buff *skb) | |
5029 | { | |
5030 | unsigned int r_idx = skb->queue_mapping; | |
5031 | ||
5032 | if (r_idx >= adapter->num_tx_queues) | |
5033 | r_idx = r_idx % adapter->num_tx_queues; | |
5034 | ||
5035 | return adapter->tx_ring[r_idx]; | |
5036 | } | |
5037 | ||
cd392f5c AD |
5038 | static netdev_tx_t igb_xmit_frame(struct sk_buff *skb, |
5039 | struct net_device *netdev) | |
9d5c8243 AK |
5040 | { |
5041 | struct igb_adapter *adapter = netdev_priv(netdev); | |
b1a436c3 AD |
5042 | |
5043 | if (test_bit(__IGB_DOWN, &adapter->state)) { | |
5044 | dev_kfree_skb_any(skb); | |
5045 | return NETDEV_TX_OK; | |
5046 | } | |
5047 | ||
5048 | if (skb->len <= 0) { | |
5049 | dev_kfree_skb_any(skb); | |
5050 | return NETDEV_TX_OK; | |
5051 | } | |
5052 | ||
b980ac18 | 5053 | /* The minimum packet size with TCTL.PSP set is 17 so pad the skb |
1cc3bd87 AD |
5054 | * in order to meet this minimum size requirement. |
5055 | */ | |
ea5ceeab TD |
5056 | if (unlikely(skb->len < 17)) { |
5057 | if (skb_pad(skb, 17 - skb->len)) | |
1cc3bd87 AD |
5058 | return NETDEV_TX_OK; |
5059 | skb->len = 17; | |
ea5ceeab | 5060 | skb_set_tail_pointer(skb, 17); |
1cc3bd87 | 5061 | } |
9d5c8243 | 5062 | |
1cc3bd87 | 5063 | return igb_xmit_frame_ring(skb, igb_tx_queue_mapping(adapter, skb)); |
9d5c8243 AK |
5064 | } |
5065 | ||
5066 | /** | |
b980ac18 JK |
5067 | * igb_tx_timeout - Respond to a Tx Hang |
5068 | * @netdev: network interface device structure | |
9d5c8243 AK |
5069 | **/ |
5070 | static void igb_tx_timeout(struct net_device *netdev) | |
5071 | { | |
5072 | struct igb_adapter *adapter = netdev_priv(netdev); | |
5073 | struct e1000_hw *hw = &adapter->hw; | |
5074 | ||
5075 | /* Do the reset outside of interrupt context */ | |
5076 | adapter->tx_timeout_count++; | |
f7ba205e | 5077 | |
06218a8d | 5078 | if (hw->mac.type >= e1000_82580) |
55cac248 AD |
5079 | hw->dev_spec._82575.global_device_reset = true; |
5080 | ||
9d5c8243 | 5081 | schedule_work(&adapter->reset_task); |
265de409 AD |
5082 | wr32(E1000_EICS, |
5083 | (adapter->eims_enable_mask & ~adapter->eims_other)); | |
9d5c8243 AK |
5084 | } |
5085 | ||
5086 | static void igb_reset_task(struct work_struct *work) | |
5087 | { | |
5088 | struct igb_adapter *adapter; | |
5089 | adapter = container_of(work, struct igb_adapter, reset_task); | |
5090 | ||
c97ec42a TI |
5091 | igb_dump(adapter); |
5092 | netdev_err(adapter->netdev, "Reset adapter\n"); | |
9d5c8243 AK |
5093 | igb_reinit_locked(adapter); |
5094 | } | |
5095 | ||
5096 | /** | |
b980ac18 JK |
5097 | * igb_get_stats64 - Get System Network Statistics |
5098 | * @netdev: network interface device structure | |
5099 | * @stats: rtnl_link_stats64 pointer | |
9d5c8243 | 5100 | **/ |
12dcd86b | 5101 | static struct rtnl_link_stats64 *igb_get_stats64(struct net_device *netdev, |
b980ac18 | 5102 | struct rtnl_link_stats64 *stats) |
9d5c8243 | 5103 | { |
12dcd86b ED |
5104 | struct igb_adapter *adapter = netdev_priv(netdev); |
5105 | ||
5106 | spin_lock(&adapter->stats64_lock); | |
5107 | igb_update_stats(adapter, &adapter->stats64); | |
5108 | memcpy(stats, &adapter->stats64, sizeof(*stats)); | |
5109 | spin_unlock(&adapter->stats64_lock); | |
5110 | ||
5111 | return stats; | |
9d5c8243 AK |
5112 | } |
5113 | ||
5114 | /** | |
b980ac18 JK |
5115 | * igb_change_mtu - Change the Maximum Transfer Unit |
5116 | * @netdev: network interface device structure | |
5117 | * @new_mtu: new value for maximum frame size | |
9d5c8243 | 5118 | * |
b980ac18 | 5119 | * Returns 0 on success, negative on failure |
9d5c8243 AK |
5120 | **/ |
5121 | static int igb_change_mtu(struct net_device *netdev, int new_mtu) | |
5122 | { | |
5123 | struct igb_adapter *adapter = netdev_priv(netdev); | |
090b1795 | 5124 | struct pci_dev *pdev = adapter->pdev; |
153285f9 | 5125 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; |
9d5c8243 | 5126 | |
c809d227 | 5127 | if ((new_mtu < 68) || (max_frame > MAX_JUMBO_FRAME_SIZE)) { |
090b1795 | 5128 | dev_err(&pdev->dev, "Invalid MTU setting\n"); |
9d5c8243 AK |
5129 | return -EINVAL; |
5130 | } | |
5131 | ||
153285f9 | 5132 | #define MAX_STD_JUMBO_FRAME_SIZE 9238 |
9d5c8243 | 5133 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { |
090b1795 | 5134 | dev_err(&pdev->dev, "MTU > 9216 not supported.\n"); |
9d5c8243 AK |
5135 | return -EINVAL; |
5136 | } | |
5137 | ||
2ccd994c AD |
5138 | /* adjust max frame to be at least the size of a standard frame */ |
5139 | if (max_frame < (ETH_FRAME_LEN + ETH_FCS_LEN)) | |
5140 | max_frame = ETH_FRAME_LEN + ETH_FCS_LEN; | |
5141 | ||
9d5c8243 | 5142 | while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) |
0d451e79 | 5143 | usleep_range(1000, 2000); |
73cd78f1 | 5144 | |
9d5c8243 AK |
5145 | /* igb_down has a dependency on max_frame_size */ |
5146 | adapter->max_frame_size = max_frame; | |
559e9c49 | 5147 | |
4c844851 AD |
5148 | if (netif_running(netdev)) |
5149 | igb_down(adapter); | |
9d5c8243 | 5150 | |
090b1795 | 5151 | dev_info(&pdev->dev, "changing MTU from %d to %d\n", |
9d5c8243 AK |
5152 | netdev->mtu, new_mtu); |
5153 | netdev->mtu = new_mtu; | |
5154 | ||
5155 | if (netif_running(netdev)) | |
5156 | igb_up(adapter); | |
5157 | else | |
5158 | igb_reset(adapter); | |
5159 | ||
5160 | clear_bit(__IGB_RESETTING, &adapter->state); | |
5161 | ||
5162 | return 0; | |
5163 | } | |
5164 | ||
5165 | /** | |
b980ac18 JK |
5166 | * igb_update_stats - Update the board statistics counters |
5167 | * @adapter: board private structure | |
9d5c8243 | 5168 | **/ |
12dcd86b ED |
5169 | void igb_update_stats(struct igb_adapter *adapter, |
5170 | struct rtnl_link_stats64 *net_stats) | |
9d5c8243 AK |
5171 | { |
5172 | struct e1000_hw *hw = &adapter->hw; | |
5173 | struct pci_dev *pdev = adapter->pdev; | |
fa3d9a6d | 5174 | u32 reg, mpc; |
9d5c8243 | 5175 | u16 phy_tmp; |
3f9c0164 AD |
5176 | int i; |
5177 | u64 bytes, packets; | |
12dcd86b ED |
5178 | unsigned int start; |
5179 | u64 _bytes, _packets; | |
9d5c8243 AK |
5180 | |
5181 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF | |
5182 | ||
b980ac18 | 5183 | /* Prevent stats update while adapter is being reset, or if the pci |
9d5c8243 AK |
5184 | * connection is down. |
5185 | */ | |
5186 | if (adapter->link_speed == 0) | |
5187 | return; | |
5188 | if (pci_channel_offline(pdev)) | |
5189 | return; | |
5190 | ||
3f9c0164 AD |
5191 | bytes = 0; |
5192 | packets = 0; | |
7f90128e AA |
5193 | |
5194 | rcu_read_lock(); | |
3f9c0164 | 5195 | for (i = 0; i < adapter->num_rx_queues; i++) { |
3025a446 | 5196 | struct igb_ring *ring = adapter->rx_ring[i]; |
e66c083a TF |
5197 | u32 rqdpc = rd32(E1000_RQDPC(i)); |
5198 | if (hw->mac.type >= e1000_i210) | |
5199 | wr32(E1000_RQDPC(i), 0); | |
12dcd86b | 5200 | |
ae1c07a6 AD |
5201 | if (rqdpc) { |
5202 | ring->rx_stats.drops += rqdpc; | |
5203 | net_stats->rx_fifo_errors += rqdpc; | |
5204 | } | |
12dcd86b ED |
5205 | |
5206 | do { | |
57a7744e | 5207 | start = u64_stats_fetch_begin_irq(&ring->rx_syncp); |
12dcd86b ED |
5208 | _bytes = ring->rx_stats.bytes; |
5209 | _packets = ring->rx_stats.packets; | |
57a7744e | 5210 | } while (u64_stats_fetch_retry_irq(&ring->rx_syncp, start)); |
12dcd86b ED |
5211 | bytes += _bytes; |
5212 | packets += _packets; | |
3f9c0164 AD |
5213 | } |
5214 | ||
128e45eb AD |
5215 | net_stats->rx_bytes = bytes; |
5216 | net_stats->rx_packets = packets; | |
3f9c0164 AD |
5217 | |
5218 | bytes = 0; | |
5219 | packets = 0; | |
5220 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
3025a446 | 5221 | struct igb_ring *ring = adapter->tx_ring[i]; |
12dcd86b | 5222 | do { |
57a7744e | 5223 | start = u64_stats_fetch_begin_irq(&ring->tx_syncp); |
12dcd86b ED |
5224 | _bytes = ring->tx_stats.bytes; |
5225 | _packets = ring->tx_stats.packets; | |
57a7744e | 5226 | } while (u64_stats_fetch_retry_irq(&ring->tx_syncp, start)); |
12dcd86b ED |
5227 | bytes += _bytes; |
5228 | packets += _packets; | |
3f9c0164 | 5229 | } |
128e45eb AD |
5230 | net_stats->tx_bytes = bytes; |
5231 | net_stats->tx_packets = packets; | |
7f90128e | 5232 | rcu_read_unlock(); |
3f9c0164 AD |
5233 | |
5234 | /* read stats registers */ | |
9d5c8243 AK |
5235 | adapter->stats.crcerrs += rd32(E1000_CRCERRS); |
5236 | adapter->stats.gprc += rd32(E1000_GPRC); | |
5237 | adapter->stats.gorc += rd32(E1000_GORCL); | |
5238 | rd32(E1000_GORCH); /* clear GORCL */ | |
5239 | adapter->stats.bprc += rd32(E1000_BPRC); | |
5240 | adapter->stats.mprc += rd32(E1000_MPRC); | |
5241 | adapter->stats.roc += rd32(E1000_ROC); | |
5242 | ||
5243 | adapter->stats.prc64 += rd32(E1000_PRC64); | |
5244 | adapter->stats.prc127 += rd32(E1000_PRC127); | |
5245 | adapter->stats.prc255 += rd32(E1000_PRC255); | |
5246 | adapter->stats.prc511 += rd32(E1000_PRC511); | |
5247 | adapter->stats.prc1023 += rd32(E1000_PRC1023); | |
5248 | adapter->stats.prc1522 += rd32(E1000_PRC1522); | |
5249 | adapter->stats.symerrs += rd32(E1000_SYMERRS); | |
5250 | adapter->stats.sec += rd32(E1000_SEC); | |
5251 | ||
fa3d9a6d MW |
5252 | mpc = rd32(E1000_MPC); |
5253 | adapter->stats.mpc += mpc; | |
5254 | net_stats->rx_fifo_errors += mpc; | |
9d5c8243 AK |
5255 | adapter->stats.scc += rd32(E1000_SCC); |
5256 | adapter->stats.ecol += rd32(E1000_ECOL); | |
5257 | adapter->stats.mcc += rd32(E1000_MCC); | |
5258 | adapter->stats.latecol += rd32(E1000_LATECOL); | |
5259 | adapter->stats.dc += rd32(E1000_DC); | |
5260 | adapter->stats.rlec += rd32(E1000_RLEC); | |
5261 | adapter->stats.xonrxc += rd32(E1000_XONRXC); | |
5262 | adapter->stats.xontxc += rd32(E1000_XONTXC); | |
5263 | adapter->stats.xoffrxc += rd32(E1000_XOFFRXC); | |
5264 | adapter->stats.xofftxc += rd32(E1000_XOFFTXC); | |
5265 | adapter->stats.fcruc += rd32(E1000_FCRUC); | |
5266 | adapter->stats.gptc += rd32(E1000_GPTC); | |
5267 | adapter->stats.gotc += rd32(E1000_GOTCL); | |
5268 | rd32(E1000_GOTCH); /* clear GOTCL */ | |
fa3d9a6d | 5269 | adapter->stats.rnbc += rd32(E1000_RNBC); |
9d5c8243 AK |
5270 | adapter->stats.ruc += rd32(E1000_RUC); |
5271 | adapter->stats.rfc += rd32(E1000_RFC); | |
5272 | adapter->stats.rjc += rd32(E1000_RJC); | |
5273 | adapter->stats.tor += rd32(E1000_TORH); | |
5274 | adapter->stats.tot += rd32(E1000_TOTH); | |
5275 | adapter->stats.tpr += rd32(E1000_TPR); | |
5276 | ||
5277 | adapter->stats.ptc64 += rd32(E1000_PTC64); | |
5278 | adapter->stats.ptc127 += rd32(E1000_PTC127); | |
5279 | adapter->stats.ptc255 += rd32(E1000_PTC255); | |
5280 | adapter->stats.ptc511 += rd32(E1000_PTC511); | |
5281 | adapter->stats.ptc1023 += rd32(E1000_PTC1023); | |
5282 | adapter->stats.ptc1522 += rd32(E1000_PTC1522); | |
5283 | ||
5284 | adapter->stats.mptc += rd32(E1000_MPTC); | |
5285 | adapter->stats.bptc += rd32(E1000_BPTC); | |
5286 | ||
2d0b0f69 NN |
5287 | adapter->stats.tpt += rd32(E1000_TPT); |
5288 | adapter->stats.colc += rd32(E1000_COLC); | |
9d5c8243 AK |
5289 | |
5290 | adapter->stats.algnerrc += rd32(E1000_ALGNERRC); | |
43915c7c NN |
5291 | /* read internal phy specific stats */ |
5292 | reg = rd32(E1000_CTRL_EXT); | |
5293 | if (!(reg & E1000_CTRL_EXT_LINK_MODE_MASK)) { | |
5294 | adapter->stats.rxerrc += rd32(E1000_RXERRC); | |
3dbdf969 CW |
5295 | |
5296 | /* this stat has invalid values on i210/i211 */ | |
5297 | if ((hw->mac.type != e1000_i210) && | |
5298 | (hw->mac.type != e1000_i211)) | |
5299 | adapter->stats.tncrs += rd32(E1000_TNCRS); | |
43915c7c NN |
5300 | } |
5301 | ||
9d5c8243 AK |
5302 | adapter->stats.tsctc += rd32(E1000_TSCTC); |
5303 | adapter->stats.tsctfc += rd32(E1000_TSCTFC); | |
5304 | ||
5305 | adapter->stats.iac += rd32(E1000_IAC); | |
5306 | adapter->stats.icrxoc += rd32(E1000_ICRXOC); | |
5307 | adapter->stats.icrxptc += rd32(E1000_ICRXPTC); | |
5308 | adapter->stats.icrxatc += rd32(E1000_ICRXATC); | |
5309 | adapter->stats.ictxptc += rd32(E1000_ICTXPTC); | |
5310 | adapter->stats.ictxatc += rd32(E1000_ICTXATC); | |
5311 | adapter->stats.ictxqec += rd32(E1000_ICTXQEC); | |
5312 | adapter->stats.ictxqmtc += rd32(E1000_ICTXQMTC); | |
5313 | adapter->stats.icrxdmtc += rd32(E1000_ICRXDMTC); | |
5314 | ||
5315 | /* Fill out the OS statistics structure */ | |
128e45eb AD |
5316 | net_stats->multicast = adapter->stats.mprc; |
5317 | net_stats->collisions = adapter->stats.colc; | |
9d5c8243 AK |
5318 | |
5319 | /* Rx Errors */ | |
5320 | ||
5321 | /* RLEC on some newer hardware can be incorrect so build | |
b980ac18 JK |
5322 | * our own version based on RUC and ROC |
5323 | */ | |
128e45eb | 5324 | net_stats->rx_errors = adapter->stats.rxerrc + |
9d5c8243 AK |
5325 | adapter->stats.crcerrs + adapter->stats.algnerrc + |
5326 | adapter->stats.ruc + adapter->stats.roc + | |
5327 | adapter->stats.cexterr; | |
128e45eb AD |
5328 | net_stats->rx_length_errors = adapter->stats.ruc + |
5329 | adapter->stats.roc; | |
5330 | net_stats->rx_crc_errors = adapter->stats.crcerrs; | |
5331 | net_stats->rx_frame_errors = adapter->stats.algnerrc; | |
5332 | net_stats->rx_missed_errors = adapter->stats.mpc; | |
9d5c8243 AK |
5333 | |
5334 | /* Tx Errors */ | |
128e45eb AD |
5335 | net_stats->tx_errors = adapter->stats.ecol + |
5336 | adapter->stats.latecol; | |
5337 | net_stats->tx_aborted_errors = adapter->stats.ecol; | |
5338 | net_stats->tx_window_errors = adapter->stats.latecol; | |
5339 | net_stats->tx_carrier_errors = adapter->stats.tncrs; | |
9d5c8243 AK |
5340 | |
5341 | /* Tx Dropped needs to be maintained elsewhere */ | |
5342 | ||
5343 | /* Phy Stats */ | |
5344 | if (hw->phy.media_type == e1000_media_type_copper) { | |
5345 | if ((adapter->link_speed == SPEED_1000) && | |
73cd78f1 | 5346 | (!igb_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
9d5c8243 AK |
5347 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; |
5348 | adapter->phy_stats.idle_errors += phy_tmp; | |
5349 | } | |
5350 | } | |
5351 | ||
5352 | /* Management Stats */ | |
5353 | adapter->stats.mgptc += rd32(E1000_MGTPTC); | |
5354 | adapter->stats.mgprc += rd32(E1000_MGTPRC); | |
5355 | adapter->stats.mgpdc += rd32(E1000_MGTPDC); | |
0a915b95 CW |
5356 | |
5357 | /* OS2BMC Stats */ | |
5358 | reg = rd32(E1000_MANC); | |
5359 | if (reg & E1000_MANC_EN_BMC2OS) { | |
5360 | adapter->stats.o2bgptc += rd32(E1000_O2BGPTC); | |
5361 | adapter->stats.o2bspc += rd32(E1000_O2BSPC); | |
5362 | adapter->stats.b2ospc += rd32(E1000_B2OSPC); | |
5363 | adapter->stats.b2ogprc += rd32(E1000_B2OGPRC); | |
5364 | } | |
9d5c8243 AK |
5365 | } |
5366 | ||
9d5c8243 AK |
5367 | static irqreturn_t igb_msix_other(int irq, void *data) |
5368 | { | |
047e0030 | 5369 | struct igb_adapter *adapter = data; |
9d5c8243 | 5370 | struct e1000_hw *hw = &adapter->hw; |
844290e5 | 5371 | u32 icr = rd32(E1000_ICR); |
844290e5 | 5372 | /* reading ICR causes bit 31 of EICR to be cleared */ |
dda0e083 | 5373 | |
7f081d40 AD |
5374 | if (icr & E1000_ICR_DRSTA) |
5375 | schedule_work(&adapter->reset_task); | |
5376 | ||
047e0030 | 5377 | if (icr & E1000_ICR_DOUTSYNC) { |
dda0e083 AD |
5378 | /* HW is reporting DMA is out of sync */ |
5379 | adapter->stats.doosync++; | |
13800469 GR |
5380 | /* The DMA Out of Sync is also indication of a spoof event |
5381 | * in IOV mode. Check the Wrong VM Behavior register to | |
b980ac18 JK |
5382 | * see if it is really a spoof event. |
5383 | */ | |
13800469 | 5384 | igb_check_wvbr(adapter); |
dda0e083 | 5385 | } |
eebbbdba | 5386 | |
4ae196df AD |
5387 | /* Check for a mailbox event */ |
5388 | if (icr & E1000_ICR_VMMB) | |
5389 | igb_msg_task(adapter); | |
5390 | ||
5391 | if (icr & E1000_ICR_LSC) { | |
5392 | hw->mac.get_link_status = 1; | |
5393 | /* guard against interrupt when we're going down */ | |
5394 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
5395 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
5396 | } | |
5397 | ||
1f6e8178 MV |
5398 | if (icr & E1000_ICR_TS) { |
5399 | u32 tsicr = rd32(E1000_TSICR); | |
5400 | ||
5401 | if (tsicr & E1000_TSICR_TXTS) { | |
5402 | /* acknowledge the interrupt */ | |
5403 | wr32(E1000_TSICR, E1000_TSICR_TXTS); | |
5404 | /* retrieve hardware timestamp */ | |
5405 | schedule_work(&adapter->ptp_tx_work); | |
5406 | } | |
5407 | } | |
1f6e8178 | 5408 | |
844290e5 | 5409 | wr32(E1000_EIMS, adapter->eims_other); |
9d5c8243 AK |
5410 | |
5411 | return IRQ_HANDLED; | |
5412 | } | |
5413 | ||
047e0030 | 5414 | static void igb_write_itr(struct igb_q_vector *q_vector) |
9d5c8243 | 5415 | { |
26b39276 | 5416 | struct igb_adapter *adapter = q_vector->adapter; |
047e0030 | 5417 | u32 itr_val = q_vector->itr_val & 0x7FFC; |
9d5c8243 | 5418 | |
047e0030 AD |
5419 | if (!q_vector->set_itr) |
5420 | return; | |
73cd78f1 | 5421 | |
047e0030 AD |
5422 | if (!itr_val) |
5423 | itr_val = 0x4; | |
661086df | 5424 | |
26b39276 AD |
5425 | if (adapter->hw.mac.type == e1000_82575) |
5426 | itr_val |= itr_val << 16; | |
661086df | 5427 | else |
0ba82994 | 5428 | itr_val |= E1000_EITR_CNT_IGNR; |
661086df | 5429 | |
047e0030 AD |
5430 | writel(itr_val, q_vector->itr_register); |
5431 | q_vector->set_itr = 0; | |
6eb5a7f1 AD |
5432 | } |
5433 | ||
047e0030 | 5434 | static irqreturn_t igb_msix_ring(int irq, void *data) |
9d5c8243 | 5435 | { |
047e0030 | 5436 | struct igb_q_vector *q_vector = data; |
9d5c8243 | 5437 | |
047e0030 AD |
5438 | /* Write the ITR value calculated from the previous interrupt. */ |
5439 | igb_write_itr(q_vector); | |
9d5c8243 | 5440 | |
047e0030 | 5441 | napi_schedule(&q_vector->napi); |
844290e5 | 5442 | |
047e0030 | 5443 | return IRQ_HANDLED; |
fe4506b6 JC |
5444 | } |
5445 | ||
421e02f0 | 5446 | #ifdef CONFIG_IGB_DCA |
6a05004a AD |
5447 | static void igb_update_tx_dca(struct igb_adapter *adapter, |
5448 | struct igb_ring *tx_ring, | |
5449 | int cpu) | |
5450 | { | |
5451 | struct e1000_hw *hw = &adapter->hw; | |
5452 | u32 txctrl = dca3_get_tag(tx_ring->dev, cpu); | |
5453 | ||
5454 | if (hw->mac.type != e1000_82575) | |
5455 | txctrl <<= E1000_DCA_TXCTRL_CPUID_SHIFT; | |
5456 | ||
b980ac18 | 5457 | /* We can enable relaxed ordering for reads, but not writes when |
6a05004a AD |
5458 | * DCA is enabled. This is due to a known issue in some chipsets |
5459 | * which will cause the DCA tag to be cleared. | |
5460 | */ | |
5461 | txctrl |= E1000_DCA_TXCTRL_DESC_RRO_EN | | |
5462 | E1000_DCA_TXCTRL_DATA_RRO_EN | | |
5463 | E1000_DCA_TXCTRL_DESC_DCA_EN; | |
5464 | ||
5465 | wr32(E1000_DCA_TXCTRL(tx_ring->reg_idx), txctrl); | |
5466 | } | |
5467 | ||
5468 | static void igb_update_rx_dca(struct igb_adapter *adapter, | |
5469 | struct igb_ring *rx_ring, | |
5470 | int cpu) | |
5471 | { | |
5472 | struct e1000_hw *hw = &adapter->hw; | |
5473 | u32 rxctrl = dca3_get_tag(&adapter->pdev->dev, cpu); | |
5474 | ||
5475 | if (hw->mac.type != e1000_82575) | |
5476 | rxctrl <<= E1000_DCA_RXCTRL_CPUID_SHIFT; | |
5477 | ||
b980ac18 | 5478 | /* We can enable relaxed ordering for reads, but not writes when |
6a05004a AD |
5479 | * DCA is enabled. This is due to a known issue in some chipsets |
5480 | * which will cause the DCA tag to be cleared. | |
5481 | */ | |
5482 | rxctrl |= E1000_DCA_RXCTRL_DESC_RRO_EN | | |
5483 | E1000_DCA_RXCTRL_DESC_DCA_EN; | |
5484 | ||
5485 | wr32(E1000_DCA_RXCTRL(rx_ring->reg_idx), rxctrl); | |
5486 | } | |
5487 | ||
047e0030 | 5488 | static void igb_update_dca(struct igb_q_vector *q_vector) |
fe4506b6 | 5489 | { |
047e0030 | 5490 | struct igb_adapter *adapter = q_vector->adapter; |
fe4506b6 | 5491 | int cpu = get_cpu(); |
fe4506b6 | 5492 | |
047e0030 AD |
5493 | if (q_vector->cpu == cpu) |
5494 | goto out_no_update; | |
5495 | ||
6a05004a AD |
5496 | if (q_vector->tx.ring) |
5497 | igb_update_tx_dca(adapter, q_vector->tx.ring, cpu); | |
5498 | ||
5499 | if (q_vector->rx.ring) | |
5500 | igb_update_rx_dca(adapter, q_vector->rx.ring, cpu); | |
5501 | ||
047e0030 AD |
5502 | q_vector->cpu = cpu; |
5503 | out_no_update: | |
fe4506b6 JC |
5504 | put_cpu(); |
5505 | } | |
5506 | ||
5507 | static void igb_setup_dca(struct igb_adapter *adapter) | |
5508 | { | |
7e0e99ef | 5509 | struct e1000_hw *hw = &adapter->hw; |
fe4506b6 JC |
5510 | int i; |
5511 | ||
7dfc16fa | 5512 | if (!(adapter->flags & IGB_FLAG_DCA_ENABLED)) |
fe4506b6 JC |
5513 | return; |
5514 | ||
7e0e99ef AD |
5515 | /* Always use CB2 mode, difference is masked in the CB driver. */ |
5516 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_CB2); | |
5517 | ||
047e0030 | 5518 | for (i = 0; i < adapter->num_q_vectors; i++) { |
26b39276 AD |
5519 | adapter->q_vector[i]->cpu = -1; |
5520 | igb_update_dca(adapter->q_vector[i]); | |
fe4506b6 JC |
5521 | } |
5522 | } | |
5523 | ||
5524 | static int __igb_notify_dca(struct device *dev, void *data) | |
5525 | { | |
5526 | struct net_device *netdev = dev_get_drvdata(dev); | |
5527 | struct igb_adapter *adapter = netdev_priv(netdev); | |
090b1795 | 5528 | struct pci_dev *pdev = adapter->pdev; |
fe4506b6 JC |
5529 | struct e1000_hw *hw = &adapter->hw; |
5530 | unsigned long event = *(unsigned long *)data; | |
5531 | ||
5532 | switch (event) { | |
5533 | case DCA_PROVIDER_ADD: | |
5534 | /* if already enabled, don't do it again */ | |
7dfc16fa | 5535 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) |
fe4506b6 | 5536 | break; |
fe4506b6 | 5537 | if (dca_add_requester(dev) == 0) { |
bbd98fe4 | 5538 | adapter->flags |= IGB_FLAG_DCA_ENABLED; |
090b1795 | 5539 | dev_info(&pdev->dev, "DCA enabled\n"); |
fe4506b6 JC |
5540 | igb_setup_dca(adapter); |
5541 | break; | |
5542 | } | |
5543 | /* Fall Through since DCA is disabled. */ | |
5544 | case DCA_PROVIDER_REMOVE: | |
7dfc16fa | 5545 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) { |
fe4506b6 | 5546 | /* without this a class_device is left |
b980ac18 JK |
5547 | * hanging around in the sysfs model |
5548 | */ | |
fe4506b6 | 5549 | dca_remove_requester(dev); |
090b1795 | 5550 | dev_info(&pdev->dev, "DCA disabled\n"); |
7dfc16fa | 5551 | adapter->flags &= ~IGB_FLAG_DCA_ENABLED; |
cbd347ad | 5552 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE); |
fe4506b6 JC |
5553 | } |
5554 | break; | |
5555 | } | |
bbd98fe4 | 5556 | |
fe4506b6 | 5557 | return 0; |
9d5c8243 AK |
5558 | } |
5559 | ||
fe4506b6 | 5560 | static int igb_notify_dca(struct notifier_block *nb, unsigned long event, |
b980ac18 | 5561 | void *p) |
fe4506b6 JC |
5562 | { |
5563 | int ret_val; | |
5564 | ||
5565 | ret_val = driver_for_each_device(&igb_driver.driver, NULL, &event, | |
b980ac18 | 5566 | __igb_notify_dca); |
fe4506b6 JC |
5567 | |
5568 | return ret_val ? NOTIFY_BAD : NOTIFY_DONE; | |
5569 | } | |
421e02f0 | 5570 | #endif /* CONFIG_IGB_DCA */ |
9d5c8243 | 5571 | |
0224d663 GR |
5572 | #ifdef CONFIG_PCI_IOV |
5573 | static int igb_vf_configure(struct igb_adapter *adapter, int vf) | |
5574 | { | |
5575 | unsigned char mac_addr[ETH_ALEN]; | |
0224d663 | 5576 | |
5ac6f91d | 5577 | eth_zero_addr(mac_addr); |
0224d663 GR |
5578 | igb_set_vf_mac(adapter, vf, mac_addr); |
5579 | ||
70ea4783 LL |
5580 | /* By default spoof check is enabled for all VFs */ |
5581 | adapter->vf_data[vf].spoofchk_enabled = true; | |
5582 | ||
f557147c | 5583 | return 0; |
0224d663 GR |
5584 | } |
5585 | ||
0224d663 | 5586 | #endif |
4ae196df AD |
5587 | static void igb_ping_all_vfs(struct igb_adapter *adapter) |
5588 | { | |
5589 | struct e1000_hw *hw = &adapter->hw; | |
5590 | u32 ping; | |
5591 | int i; | |
5592 | ||
5593 | for (i = 0 ; i < adapter->vfs_allocated_count; i++) { | |
5594 | ping = E1000_PF_CONTROL_MSG; | |
f2ca0dbe | 5595 | if (adapter->vf_data[i].flags & IGB_VF_FLAG_CTS) |
4ae196df AD |
5596 | ping |= E1000_VT_MSGTYPE_CTS; |
5597 | igb_write_mbx(hw, &ping, 1, i); | |
5598 | } | |
5599 | } | |
5600 | ||
7d5753f0 AD |
5601 | static int igb_set_vf_promisc(struct igb_adapter *adapter, u32 *msgbuf, u32 vf) |
5602 | { | |
5603 | struct e1000_hw *hw = &adapter->hw; | |
5604 | u32 vmolr = rd32(E1000_VMOLR(vf)); | |
5605 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; | |
5606 | ||
d85b9004 | 5607 | vf_data->flags &= ~(IGB_VF_FLAG_UNI_PROMISC | |
b980ac18 | 5608 | IGB_VF_FLAG_MULTI_PROMISC); |
7d5753f0 AD |
5609 | vmolr &= ~(E1000_VMOLR_ROPE | E1000_VMOLR_ROMPE | E1000_VMOLR_MPME); |
5610 | ||
5611 | if (*msgbuf & E1000_VF_SET_PROMISC_MULTICAST) { | |
5612 | vmolr |= E1000_VMOLR_MPME; | |
d85b9004 | 5613 | vf_data->flags |= IGB_VF_FLAG_MULTI_PROMISC; |
7d5753f0 AD |
5614 | *msgbuf &= ~E1000_VF_SET_PROMISC_MULTICAST; |
5615 | } else { | |
b980ac18 | 5616 | /* if we have hashes and we are clearing a multicast promisc |
7d5753f0 AD |
5617 | * flag we need to write the hashes to the MTA as this step |
5618 | * was previously skipped | |
5619 | */ | |
5620 | if (vf_data->num_vf_mc_hashes > 30) { | |
5621 | vmolr |= E1000_VMOLR_MPME; | |
5622 | } else if (vf_data->num_vf_mc_hashes) { | |
5623 | int j; | |
9005df38 | 5624 | |
7d5753f0 AD |
5625 | vmolr |= E1000_VMOLR_ROMPE; |
5626 | for (j = 0; j < vf_data->num_vf_mc_hashes; j++) | |
5627 | igb_mta_set(hw, vf_data->vf_mc_hashes[j]); | |
5628 | } | |
5629 | } | |
5630 | ||
5631 | wr32(E1000_VMOLR(vf), vmolr); | |
5632 | ||
5633 | /* there are flags left unprocessed, likely not supported */ | |
5634 | if (*msgbuf & E1000_VT_MSGINFO_MASK) | |
5635 | return -EINVAL; | |
5636 | ||
5637 | return 0; | |
7d5753f0 AD |
5638 | } |
5639 | ||
4ae196df AD |
5640 | static int igb_set_vf_multicasts(struct igb_adapter *adapter, |
5641 | u32 *msgbuf, u32 vf) | |
5642 | { | |
5643 | int n = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT; | |
5644 | u16 *hash_list = (u16 *)&msgbuf[1]; | |
5645 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; | |
5646 | int i; | |
5647 | ||
7d5753f0 | 5648 | /* salt away the number of multicast addresses assigned |
4ae196df AD |
5649 | * to this VF for later use to restore when the PF multi cast |
5650 | * list changes | |
5651 | */ | |
5652 | vf_data->num_vf_mc_hashes = n; | |
5653 | ||
7d5753f0 AD |
5654 | /* only up to 30 hash values supported */ |
5655 | if (n > 30) | |
5656 | n = 30; | |
5657 | ||
5658 | /* store the hashes for later use */ | |
4ae196df | 5659 | for (i = 0; i < n; i++) |
a419aef8 | 5660 | vf_data->vf_mc_hashes[i] = hash_list[i]; |
4ae196df AD |
5661 | |
5662 | /* Flush and reset the mta with the new values */ | |
ff41f8dc | 5663 | igb_set_rx_mode(adapter->netdev); |
4ae196df AD |
5664 | |
5665 | return 0; | |
5666 | } | |
5667 | ||
5668 | static void igb_restore_vf_multicasts(struct igb_adapter *adapter) | |
5669 | { | |
5670 | struct e1000_hw *hw = &adapter->hw; | |
5671 | struct vf_data_storage *vf_data; | |
5672 | int i, j; | |
5673 | ||
5674 | for (i = 0; i < adapter->vfs_allocated_count; i++) { | |
7d5753f0 | 5675 | u32 vmolr = rd32(E1000_VMOLR(i)); |
9005df38 | 5676 | |
7d5753f0 AD |
5677 | vmolr &= ~(E1000_VMOLR_ROMPE | E1000_VMOLR_MPME); |
5678 | ||
4ae196df | 5679 | vf_data = &adapter->vf_data[i]; |
7d5753f0 AD |
5680 | |
5681 | if ((vf_data->num_vf_mc_hashes > 30) || | |
5682 | (vf_data->flags & IGB_VF_FLAG_MULTI_PROMISC)) { | |
5683 | vmolr |= E1000_VMOLR_MPME; | |
5684 | } else if (vf_data->num_vf_mc_hashes) { | |
5685 | vmolr |= E1000_VMOLR_ROMPE; | |
5686 | for (j = 0; j < vf_data->num_vf_mc_hashes; j++) | |
5687 | igb_mta_set(hw, vf_data->vf_mc_hashes[j]); | |
5688 | } | |
5689 | wr32(E1000_VMOLR(i), vmolr); | |
4ae196df AD |
5690 | } |
5691 | } | |
5692 | ||
5693 | static void igb_clear_vf_vfta(struct igb_adapter *adapter, u32 vf) | |
5694 | { | |
5695 | struct e1000_hw *hw = &adapter->hw; | |
5696 | u32 pool_mask, reg, vid; | |
5697 | int i; | |
5698 | ||
5699 | pool_mask = 1 << (E1000_VLVF_POOLSEL_SHIFT + vf); | |
5700 | ||
5701 | /* Find the vlan filter for this id */ | |
5702 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { | |
5703 | reg = rd32(E1000_VLVF(i)); | |
5704 | ||
5705 | /* remove the vf from the pool */ | |
5706 | reg &= ~pool_mask; | |
5707 | ||
5708 | /* if pool is empty then remove entry from vfta */ | |
5709 | if (!(reg & E1000_VLVF_POOLSEL_MASK) && | |
5710 | (reg & E1000_VLVF_VLANID_ENABLE)) { | |
5711 | reg = 0; | |
5712 | vid = reg & E1000_VLVF_VLANID_MASK; | |
5713 | igb_vfta_set(hw, vid, false); | |
5714 | } | |
5715 | ||
5716 | wr32(E1000_VLVF(i), reg); | |
5717 | } | |
ae641bdc AD |
5718 | |
5719 | adapter->vf_data[vf].vlans_enabled = 0; | |
4ae196df AD |
5720 | } |
5721 | ||
5722 | static s32 igb_vlvf_set(struct igb_adapter *adapter, u32 vid, bool add, u32 vf) | |
5723 | { | |
5724 | struct e1000_hw *hw = &adapter->hw; | |
5725 | u32 reg, i; | |
5726 | ||
51466239 AD |
5727 | /* The vlvf table only exists on 82576 hardware and newer */ |
5728 | if (hw->mac.type < e1000_82576) | |
5729 | return -1; | |
5730 | ||
5731 | /* we only need to do this if VMDq is enabled */ | |
4ae196df AD |
5732 | if (!adapter->vfs_allocated_count) |
5733 | return -1; | |
5734 | ||
5735 | /* Find the vlan filter for this id */ | |
5736 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { | |
5737 | reg = rd32(E1000_VLVF(i)); | |
5738 | if ((reg & E1000_VLVF_VLANID_ENABLE) && | |
5739 | vid == (reg & E1000_VLVF_VLANID_MASK)) | |
5740 | break; | |
5741 | } | |
5742 | ||
5743 | if (add) { | |
5744 | if (i == E1000_VLVF_ARRAY_SIZE) { | |
5745 | /* Did not find a matching VLAN ID entry that was | |
5746 | * enabled. Search for a free filter entry, i.e. | |
5747 | * one without the enable bit set | |
5748 | */ | |
5749 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { | |
5750 | reg = rd32(E1000_VLVF(i)); | |
5751 | if (!(reg & E1000_VLVF_VLANID_ENABLE)) | |
5752 | break; | |
5753 | } | |
5754 | } | |
5755 | if (i < E1000_VLVF_ARRAY_SIZE) { | |
5756 | /* Found an enabled/available entry */ | |
5757 | reg |= 1 << (E1000_VLVF_POOLSEL_SHIFT + vf); | |
5758 | ||
5759 | /* if !enabled we need to set this up in vfta */ | |
5760 | if (!(reg & E1000_VLVF_VLANID_ENABLE)) { | |
51466239 AD |
5761 | /* add VID to filter table */ |
5762 | igb_vfta_set(hw, vid, true); | |
4ae196df AD |
5763 | reg |= E1000_VLVF_VLANID_ENABLE; |
5764 | } | |
cad6d05f AD |
5765 | reg &= ~E1000_VLVF_VLANID_MASK; |
5766 | reg |= vid; | |
4ae196df | 5767 | wr32(E1000_VLVF(i), reg); |
ae641bdc AD |
5768 | |
5769 | /* do not modify RLPML for PF devices */ | |
5770 | if (vf >= adapter->vfs_allocated_count) | |
5771 | return 0; | |
5772 | ||
5773 | if (!adapter->vf_data[vf].vlans_enabled) { | |
5774 | u32 size; | |
9005df38 | 5775 | |
ae641bdc AD |
5776 | reg = rd32(E1000_VMOLR(vf)); |
5777 | size = reg & E1000_VMOLR_RLPML_MASK; | |
5778 | size += 4; | |
5779 | reg &= ~E1000_VMOLR_RLPML_MASK; | |
5780 | reg |= size; | |
5781 | wr32(E1000_VMOLR(vf), reg); | |
5782 | } | |
ae641bdc | 5783 | |
51466239 | 5784 | adapter->vf_data[vf].vlans_enabled++; |
4ae196df AD |
5785 | } |
5786 | } else { | |
5787 | if (i < E1000_VLVF_ARRAY_SIZE) { | |
5788 | /* remove vf from the pool */ | |
5789 | reg &= ~(1 << (E1000_VLVF_POOLSEL_SHIFT + vf)); | |
5790 | /* if pool is empty then remove entry from vfta */ | |
5791 | if (!(reg & E1000_VLVF_POOLSEL_MASK)) { | |
5792 | reg = 0; | |
5793 | igb_vfta_set(hw, vid, false); | |
5794 | } | |
5795 | wr32(E1000_VLVF(i), reg); | |
ae641bdc AD |
5796 | |
5797 | /* do not modify RLPML for PF devices */ | |
5798 | if (vf >= adapter->vfs_allocated_count) | |
5799 | return 0; | |
5800 | ||
5801 | adapter->vf_data[vf].vlans_enabled--; | |
5802 | if (!adapter->vf_data[vf].vlans_enabled) { | |
5803 | u32 size; | |
9005df38 | 5804 | |
ae641bdc AD |
5805 | reg = rd32(E1000_VMOLR(vf)); |
5806 | size = reg & E1000_VMOLR_RLPML_MASK; | |
5807 | size -= 4; | |
5808 | reg &= ~E1000_VMOLR_RLPML_MASK; | |
5809 | reg |= size; | |
5810 | wr32(E1000_VMOLR(vf), reg); | |
5811 | } | |
4ae196df AD |
5812 | } |
5813 | } | |
8151d294 WM |
5814 | return 0; |
5815 | } | |
5816 | ||
5817 | static void igb_set_vmvir(struct igb_adapter *adapter, u32 vid, u32 vf) | |
5818 | { | |
5819 | struct e1000_hw *hw = &adapter->hw; | |
5820 | ||
5821 | if (vid) | |
5822 | wr32(E1000_VMVIR(vf), (vid | E1000_VMVIR_VLANA_DEFAULT)); | |
5823 | else | |
5824 | wr32(E1000_VMVIR(vf), 0); | |
5825 | } | |
5826 | ||
5827 | static int igb_ndo_set_vf_vlan(struct net_device *netdev, | |
5828 | int vf, u16 vlan, u8 qos) | |
5829 | { | |
5830 | int err = 0; | |
5831 | struct igb_adapter *adapter = netdev_priv(netdev); | |
5832 | ||
5833 | if ((vf >= adapter->vfs_allocated_count) || (vlan > 4095) || (qos > 7)) | |
5834 | return -EINVAL; | |
5835 | if (vlan || qos) { | |
5836 | err = igb_vlvf_set(adapter, vlan, !!vlan, vf); | |
5837 | if (err) | |
5838 | goto out; | |
5839 | igb_set_vmvir(adapter, vlan | (qos << VLAN_PRIO_SHIFT), vf); | |
5840 | igb_set_vmolr(adapter, vf, !vlan); | |
5841 | adapter->vf_data[vf].pf_vlan = vlan; | |
5842 | adapter->vf_data[vf].pf_qos = qos; | |
5843 | dev_info(&adapter->pdev->dev, | |
5844 | "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf); | |
5845 | if (test_bit(__IGB_DOWN, &adapter->state)) { | |
5846 | dev_warn(&adapter->pdev->dev, | |
b980ac18 | 5847 | "The VF VLAN has been set, but the PF device is not up.\n"); |
8151d294 | 5848 | dev_warn(&adapter->pdev->dev, |
b980ac18 | 5849 | "Bring the PF device up before attempting to use the VF device.\n"); |
8151d294 WM |
5850 | } |
5851 | } else { | |
5852 | igb_vlvf_set(adapter, adapter->vf_data[vf].pf_vlan, | |
b980ac18 | 5853 | false, vf); |
8151d294 WM |
5854 | igb_set_vmvir(adapter, vlan, vf); |
5855 | igb_set_vmolr(adapter, vf, true); | |
5856 | adapter->vf_data[vf].pf_vlan = 0; | |
5857 | adapter->vf_data[vf].pf_qos = 0; | |
b980ac18 | 5858 | } |
8151d294 | 5859 | out: |
b980ac18 | 5860 | return err; |
4ae196df AD |
5861 | } |
5862 | ||
6f3dc319 GR |
5863 | static int igb_find_vlvf_entry(struct igb_adapter *adapter, int vid) |
5864 | { | |
5865 | struct e1000_hw *hw = &adapter->hw; | |
5866 | int i; | |
5867 | u32 reg; | |
5868 | ||
5869 | /* Find the vlan filter for this id */ | |
5870 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { | |
5871 | reg = rd32(E1000_VLVF(i)); | |
5872 | if ((reg & E1000_VLVF_VLANID_ENABLE) && | |
5873 | vid == (reg & E1000_VLVF_VLANID_MASK)) | |
5874 | break; | |
5875 | } | |
5876 | ||
5877 | if (i >= E1000_VLVF_ARRAY_SIZE) | |
5878 | i = -1; | |
5879 | ||
5880 | return i; | |
5881 | } | |
5882 | ||
4ae196df AD |
5883 | static int igb_set_vf_vlan(struct igb_adapter *adapter, u32 *msgbuf, u32 vf) |
5884 | { | |
6f3dc319 | 5885 | struct e1000_hw *hw = &adapter->hw; |
4ae196df AD |
5886 | int add = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT; |
5887 | int vid = (msgbuf[1] & E1000_VLVF_VLANID_MASK); | |
6f3dc319 | 5888 | int err = 0; |
4ae196df | 5889 | |
6f3dc319 GR |
5890 | /* If in promiscuous mode we need to make sure the PF also has |
5891 | * the VLAN filter set. | |
5892 | */ | |
5893 | if (add && (adapter->netdev->flags & IFF_PROMISC)) | |
5894 | err = igb_vlvf_set(adapter, vid, add, | |
5895 | adapter->vfs_allocated_count); | |
5896 | if (err) | |
5897 | goto out; | |
5898 | ||
5899 | err = igb_vlvf_set(adapter, vid, add, vf); | |
5900 | ||
5901 | if (err) | |
5902 | goto out; | |
5903 | ||
5904 | /* Go through all the checks to see if the VLAN filter should | |
5905 | * be wiped completely. | |
5906 | */ | |
5907 | if (!add && (adapter->netdev->flags & IFF_PROMISC)) { | |
5908 | u32 vlvf, bits; | |
6f3dc319 | 5909 | int regndx = igb_find_vlvf_entry(adapter, vid); |
9005df38 | 5910 | |
6f3dc319 GR |
5911 | if (regndx < 0) |
5912 | goto out; | |
5913 | /* See if any other pools are set for this VLAN filter | |
5914 | * entry other than the PF. | |
5915 | */ | |
5916 | vlvf = bits = rd32(E1000_VLVF(regndx)); | |
5917 | bits &= 1 << (E1000_VLVF_POOLSEL_SHIFT + | |
5918 | adapter->vfs_allocated_count); | |
5919 | /* If the filter was removed then ensure PF pool bit | |
5920 | * is cleared if the PF only added itself to the pool | |
5921 | * because the PF is in promiscuous mode. | |
5922 | */ | |
5923 | if ((vlvf & VLAN_VID_MASK) == vid && | |
5924 | !test_bit(vid, adapter->active_vlans) && | |
5925 | !bits) | |
5926 | igb_vlvf_set(adapter, vid, add, | |
5927 | adapter->vfs_allocated_count); | |
5928 | } | |
5929 | ||
5930 | out: | |
5931 | return err; | |
4ae196df AD |
5932 | } |
5933 | ||
f2ca0dbe | 5934 | static inline void igb_vf_reset(struct igb_adapter *adapter, u32 vf) |
4ae196df | 5935 | { |
8fa7e0f7 GR |
5936 | /* clear flags - except flag that indicates PF has set the MAC */ |
5937 | adapter->vf_data[vf].flags &= IGB_VF_FLAG_PF_SET_MAC; | |
f2ca0dbe | 5938 | adapter->vf_data[vf].last_nack = jiffies; |
4ae196df AD |
5939 | |
5940 | /* reset offloads to defaults */ | |
8151d294 | 5941 | igb_set_vmolr(adapter, vf, true); |
4ae196df AD |
5942 | |
5943 | /* reset vlans for device */ | |
5944 | igb_clear_vf_vfta(adapter, vf); | |
8151d294 WM |
5945 | if (adapter->vf_data[vf].pf_vlan) |
5946 | igb_ndo_set_vf_vlan(adapter->netdev, vf, | |
5947 | adapter->vf_data[vf].pf_vlan, | |
5948 | adapter->vf_data[vf].pf_qos); | |
5949 | else | |
5950 | igb_clear_vf_vfta(adapter, vf); | |
4ae196df AD |
5951 | |
5952 | /* reset multicast table array for vf */ | |
5953 | adapter->vf_data[vf].num_vf_mc_hashes = 0; | |
5954 | ||
5955 | /* Flush and reset the mta with the new values */ | |
ff41f8dc | 5956 | igb_set_rx_mode(adapter->netdev); |
4ae196df AD |
5957 | } |
5958 | ||
f2ca0dbe AD |
5959 | static void igb_vf_reset_event(struct igb_adapter *adapter, u32 vf) |
5960 | { | |
5961 | unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses; | |
5962 | ||
5ac6f91d | 5963 | /* clear mac address as we were hotplug removed/added */ |
8151d294 | 5964 | if (!(adapter->vf_data[vf].flags & IGB_VF_FLAG_PF_SET_MAC)) |
5ac6f91d | 5965 | eth_zero_addr(vf_mac); |
f2ca0dbe AD |
5966 | |
5967 | /* process remaining reset events */ | |
5968 | igb_vf_reset(adapter, vf); | |
5969 | } | |
5970 | ||
5971 | static void igb_vf_reset_msg(struct igb_adapter *adapter, u32 vf) | |
4ae196df AD |
5972 | { |
5973 | struct e1000_hw *hw = &adapter->hw; | |
5974 | unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses; | |
ff41f8dc | 5975 | int rar_entry = hw->mac.rar_entry_count - (vf + 1); |
4ae196df AD |
5976 | u32 reg, msgbuf[3]; |
5977 | u8 *addr = (u8 *)(&msgbuf[1]); | |
5978 | ||
5979 | /* process all the same items cleared in a function level reset */ | |
f2ca0dbe | 5980 | igb_vf_reset(adapter, vf); |
4ae196df AD |
5981 | |
5982 | /* set vf mac address */ | |
26ad9178 | 5983 | igb_rar_set_qsel(adapter, vf_mac, rar_entry, vf); |
4ae196df AD |
5984 | |
5985 | /* enable transmit and receive for vf */ | |
5986 | reg = rd32(E1000_VFTE); | |
5987 | wr32(E1000_VFTE, reg | (1 << vf)); | |
5988 | reg = rd32(E1000_VFRE); | |
5989 | wr32(E1000_VFRE, reg | (1 << vf)); | |
5990 | ||
8fa7e0f7 | 5991 | adapter->vf_data[vf].flags |= IGB_VF_FLAG_CTS; |
4ae196df AD |
5992 | |
5993 | /* reply to reset with ack and vf mac address */ | |
5994 | msgbuf[0] = E1000_VF_RESET | E1000_VT_MSGTYPE_ACK; | |
d458cdf7 | 5995 | memcpy(addr, vf_mac, ETH_ALEN); |
4ae196df AD |
5996 | igb_write_mbx(hw, msgbuf, 3, vf); |
5997 | } | |
5998 | ||
5999 | static int igb_set_vf_mac_addr(struct igb_adapter *adapter, u32 *msg, int vf) | |
6000 | { | |
b980ac18 | 6001 | /* The VF MAC Address is stored in a packed array of bytes |
de42edde GR |
6002 | * starting at the second 32 bit word of the msg array |
6003 | */ | |
f2ca0dbe AD |
6004 | unsigned char *addr = (char *)&msg[1]; |
6005 | int err = -1; | |
4ae196df | 6006 | |
f2ca0dbe AD |
6007 | if (is_valid_ether_addr(addr)) |
6008 | err = igb_set_vf_mac(adapter, vf, addr); | |
4ae196df | 6009 | |
f2ca0dbe | 6010 | return err; |
4ae196df AD |
6011 | } |
6012 | ||
6013 | static void igb_rcv_ack_from_vf(struct igb_adapter *adapter, u32 vf) | |
6014 | { | |
6015 | struct e1000_hw *hw = &adapter->hw; | |
f2ca0dbe | 6016 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; |
4ae196df AD |
6017 | u32 msg = E1000_VT_MSGTYPE_NACK; |
6018 | ||
6019 | /* if device isn't clear to send it shouldn't be reading either */ | |
f2ca0dbe AD |
6020 | if (!(vf_data->flags & IGB_VF_FLAG_CTS) && |
6021 | time_after(jiffies, vf_data->last_nack + (2 * HZ))) { | |
4ae196df | 6022 | igb_write_mbx(hw, &msg, 1, vf); |
f2ca0dbe | 6023 | vf_data->last_nack = jiffies; |
4ae196df AD |
6024 | } |
6025 | } | |
6026 | ||
f2ca0dbe | 6027 | static void igb_rcv_msg_from_vf(struct igb_adapter *adapter, u32 vf) |
4ae196df | 6028 | { |
f2ca0dbe AD |
6029 | struct pci_dev *pdev = adapter->pdev; |
6030 | u32 msgbuf[E1000_VFMAILBOX_SIZE]; | |
4ae196df | 6031 | struct e1000_hw *hw = &adapter->hw; |
f2ca0dbe | 6032 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; |
4ae196df AD |
6033 | s32 retval; |
6034 | ||
f2ca0dbe | 6035 | retval = igb_read_mbx(hw, msgbuf, E1000_VFMAILBOX_SIZE, vf); |
4ae196df | 6036 | |
fef45f4c AD |
6037 | if (retval) { |
6038 | /* if receive failed revoke VF CTS stats and restart init */ | |
f2ca0dbe | 6039 | dev_err(&pdev->dev, "Error receiving message from VF\n"); |
fef45f4c AD |
6040 | vf_data->flags &= ~IGB_VF_FLAG_CTS; |
6041 | if (!time_after(jiffies, vf_data->last_nack + (2 * HZ))) | |
6042 | return; | |
6043 | goto out; | |
6044 | } | |
4ae196df AD |
6045 | |
6046 | /* this is a message we already processed, do nothing */ | |
6047 | if (msgbuf[0] & (E1000_VT_MSGTYPE_ACK | E1000_VT_MSGTYPE_NACK)) | |
f2ca0dbe | 6048 | return; |
4ae196df | 6049 | |
b980ac18 | 6050 | /* until the vf completes a reset it should not be |
4ae196df AD |
6051 | * allowed to start any configuration. |
6052 | */ | |
4ae196df AD |
6053 | if (msgbuf[0] == E1000_VF_RESET) { |
6054 | igb_vf_reset_msg(adapter, vf); | |
f2ca0dbe | 6055 | return; |
4ae196df AD |
6056 | } |
6057 | ||
f2ca0dbe | 6058 | if (!(vf_data->flags & IGB_VF_FLAG_CTS)) { |
fef45f4c AD |
6059 | if (!time_after(jiffies, vf_data->last_nack + (2 * HZ))) |
6060 | return; | |
6061 | retval = -1; | |
6062 | goto out; | |
4ae196df AD |
6063 | } |
6064 | ||
6065 | switch ((msgbuf[0] & 0xFFFF)) { | |
6066 | case E1000_VF_SET_MAC_ADDR: | |
a6b5ea35 GR |
6067 | retval = -EINVAL; |
6068 | if (!(vf_data->flags & IGB_VF_FLAG_PF_SET_MAC)) | |
6069 | retval = igb_set_vf_mac_addr(adapter, msgbuf, vf); | |
6070 | else | |
6071 | dev_warn(&pdev->dev, | |
b980ac18 JK |
6072 | "VF %d attempted to override administratively set MAC address\nReload the VF driver to resume operations\n", |
6073 | vf); | |
4ae196df | 6074 | break; |
7d5753f0 AD |
6075 | case E1000_VF_SET_PROMISC: |
6076 | retval = igb_set_vf_promisc(adapter, msgbuf, vf); | |
6077 | break; | |
4ae196df AD |
6078 | case E1000_VF_SET_MULTICAST: |
6079 | retval = igb_set_vf_multicasts(adapter, msgbuf, vf); | |
6080 | break; | |
6081 | case E1000_VF_SET_LPE: | |
6082 | retval = igb_set_vf_rlpml(adapter, msgbuf[1], vf); | |
6083 | break; | |
6084 | case E1000_VF_SET_VLAN: | |
a6b5ea35 GR |
6085 | retval = -1; |
6086 | if (vf_data->pf_vlan) | |
6087 | dev_warn(&pdev->dev, | |
b980ac18 JK |
6088 | "VF %d attempted to override administratively set VLAN tag\nReload the VF driver to resume operations\n", |
6089 | vf); | |
8151d294 WM |
6090 | else |
6091 | retval = igb_set_vf_vlan(adapter, msgbuf, vf); | |
4ae196df AD |
6092 | break; |
6093 | default: | |
090b1795 | 6094 | dev_err(&pdev->dev, "Unhandled Msg %08x\n", msgbuf[0]); |
4ae196df AD |
6095 | retval = -1; |
6096 | break; | |
6097 | } | |
6098 | ||
fef45f4c AD |
6099 | msgbuf[0] |= E1000_VT_MSGTYPE_CTS; |
6100 | out: | |
4ae196df AD |
6101 | /* notify the VF of the results of what it sent us */ |
6102 | if (retval) | |
6103 | msgbuf[0] |= E1000_VT_MSGTYPE_NACK; | |
6104 | else | |
6105 | msgbuf[0] |= E1000_VT_MSGTYPE_ACK; | |
6106 | ||
4ae196df | 6107 | igb_write_mbx(hw, msgbuf, 1, vf); |
f2ca0dbe | 6108 | } |
4ae196df | 6109 | |
f2ca0dbe AD |
6110 | static void igb_msg_task(struct igb_adapter *adapter) |
6111 | { | |
6112 | struct e1000_hw *hw = &adapter->hw; | |
6113 | u32 vf; | |
6114 | ||
6115 | for (vf = 0; vf < adapter->vfs_allocated_count; vf++) { | |
6116 | /* process any reset requests */ | |
6117 | if (!igb_check_for_rst(hw, vf)) | |
6118 | igb_vf_reset_event(adapter, vf); | |
6119 | ||
6120 | /* process any messages pending */ | |
6121 | if (!igb_check_for_msg(hw, vf)) | |
6122 | igb_rcv_msg_from_vf(adapter, vf); | |
6123 | ||
6124 | /* process any acks */ | |
6125 | if (!igb_check_for_ack(hw, vf)) | |
6126 | igb_rcv_ack_from_vf(adapter, vf); | |
6127 | } | |
4ae196df AD |
6128 | } |
6129 | ||
68d480c4 AD |
6130 | /** |
6131 | * igb_set_uta - Set unicast filter table address | |
6132 | * @adapter: board private structure | |
6133 | * | |
6134 | * The unicast table address is a register array of 32-bit registers. | |
6135 | * The table is meant to be used in a way similar to how the MTA is used | |
6136 | * however due to certain limitations in the hardware it is necessary to | |
25985edc LDM |
6137 | * set all the hash bits to 1 and use the VMOLR ROPE bit as a promiscuous |
6138 | * enable bit to allow vlan tag stripping when promiscuous mode is enabled | |
68d480c4 AD |
6139 | **/ |
6140 | static void igb_set_uta(struct igb_adapter *adapter) | |
6141 | { | |
6142 | struct e1000_hw *hw = &adapter->hw; | |
6143 | int i; | |
6144 | ||
6145 | /* The UTA table only exists on 82576 hardware and newer */ | |
6146 | if (hw->mac.type < e1000_82576) | |
6147 | return; | |
6148 | ||
6149 | /* we only need to do this if VMDq is enabled */ | |
6150 | if (!adapter->vfs_allocated_count) | |
6151 | return; | |
6152 | ||
6153 | for (i = 0; i < hw->mac.uta_reg_count; i++) | |
6154 | array_wr32(E1000_UTA, i, ~0); | |
6155 | } | |
6156 | ||
9d5c8243 | 6157 | /** |
b980ac18 JK |
6158 | * igb_intr_msi - Interrupt Handler |
6159 | * @irq: interrupt number | |
6160 | * @data: pointer to a network interface device structure | |
9d5c8243 AK |
6161 | **/ |
6162 | static irqreturn_t igb_intr_msi(int irq, void *data) | |
6163 | { | |
047e0030 AD |
6164 | struct igb_adapter *adapter = data; |
6165 | struct igb_q_vector *q_vector = adapter->q_vector[0]; | |
9d5c8243 AK |
6166 | struct e1000_hw *hw = &adapter->hw; |
6167 | /* read ICR disables interrupts using IAM */ | |
6168 | u32 icr = rd32(E1000_ICR); | |
6169 | ||
047e0030 | 6170 | igb_write_itr(q_vector); |
9d5c8243 | 6171 | |
7f081d40 AD |
6172 | if (icr & E1000_ICR_DRSTA) |
6173 | schedule_work(&adapter->reset_task); | |
6174 | ||
047e0030 | 6175 | if (icr & E1000_ICR_DOUTSYNC) { |
dda0e083 AD |
6176 | /* HW is reporting DMA is out of sync */ |
6177 | adapter->stats.doosync++; | |
6178 | } | |
6179 | ||
9d5c8243 AK |
6180 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
6181 | hw->mac.get_link_status = 1; | |
6182 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
6183 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
6184 | } | |
6185 | ||
1f6e8178 MV |
6186 | if (icr & E1000_ICR_TS) { |
6187 | u32 tsicr = rd32(E1000_TSICR); | |
6188 | ||
6189 | if (tsicr & E1000_TSICR_TXTS) { | |
6190 | /* acknowledge the interrupt */ | |
6191 | wr32(E1000_TSICR, E1000_TSICR_TXTS); | |
6192 | /* retrieve hardware timestamp */ | |
6193 | schedule_work(&adapter->ptp_tx_work); | |
6194 | } | |
6195 | } | |
1f6e8178 | 6196 | |
047e0030 | 6197 | napi_schedule(&q_vector->napi); |
9d5c8243 AK |
6198 | |
6199 | return IRQ_HANDLED; | |
6200 | } | |
6201 | ||
6202 | /** | |
b980ac18 JK |
6203 | * igb_intr - Legacy Interrupt Handler |
6204 | * @irq: interrupt number | |
6205 | * @data: pointer to a network interface device structure | |
9d5c8243 AK |
6206 | **/ |
6207 | static irqreturn_t igb_intr(int irq, void *data) | |
6208 | { | |
047e0030 AD |
6209 | struct igb_adapter *adapter = data; |
6210 | struct igb_q_vector *q_vector = adapter->q_vector[0]; | |
9d5c8243 AK |
6211 | struct e1000_hw *hw = &adapter->hw; |
6212 | /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No | |
b980ac18 JK |
6213 | * need for the IMC write |
6214 | */ | |
9d5c8243 | 6215 | u32 icr = rd32(E1000_ICR); |
9d5c8243 AK |
6216 | |
6217 | /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is | |
b980ac18 JK |
6218 | * not set, then the adapter didn't send an interrupt |
6219 | */ | |
9d5c8243 AK |
6220 | if (!(icr & E1000_ICR_INT_ASSERTED)) |
6221 | return IRQ_NONE; | |
6222 | ||
0ba82994 AD |
6223 | igb_write_itr(q_vector); |
6224 | ||
7f081d40 AD |
6225 | if (icr & E1000_ICR_DRSTA) |
6226 | schedule_work(&adapter->reset_task); | |
6227 | ||
047e0030 | 6228 | if (icr & E1000_ICR_DOUTSYNC) { |
dda0e083 AD |
6229 | /* HW is reporting DMA is out of sync */ |
6230 | adapter->stats.doosync++; | |
6231 | } | |
6232 | ||
9d5c8243 AK |
6233 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
6234 | hw->mac.get_link_status = 1; | |
6235 | /* guard against interrupt when we're going down */ | |
6236 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
6237 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
6238 | } | |
6239 | ||
1f6e8178 MV |
6240 | if (icr & E1000_ICR_TS) { |
6241 | u32 tsicr = rd32(E1000_TSICR); | |
6242 | ||
6243 | if (tsicr & E1000_TSICR_TXTS) { | |
6244 | /* acknowledge the interrupt */ | |
6245 | wr32(E1000_TSICR, E1000_TSICR_TXTS); | |
6246 | /* retrieve hardware timestamp */ | |
6247 | schedule_work(&adapter->ptp_tx_work); | |
6248 | } | |
6249 | } | |
1f6e8178 | 6250 | |
047e0030 | 6251 | napi_schedule(&q_vector->napi); |
9d5c8243 AK |
6252 | |
6253 | return IRQ_HANDLED; | |
6254 | } | |
6255 | ||
c50b52a0 | 6256 | static void igb_ring_irq_enable(struct igb_q_vector *q_vector) |
9d5c8243 | 6257 | { |
047e0030 | 6258 | struct igb_adapter *adapter = q_vector->adapter; |
46544258 | 6259 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 | 6260 | |
0ba82994 AD |
6261 | if ((q_vector->rx.ring && (adapter->rx_itr_setting & 3)) || |
6262 | (!q_vector->rx.ring && (adapter->tx_itr_setting & 3))) { | |
6263 | if ((adapter->num_q_vectors == 1) && !adapter->vf_data) | |
6264 | igb_set_itr(q_vector); | |
46544258 | 6265 | else |
047e0030 | 6266 | igb_update_ring_itr(q_vector); |
9d5c8243 AK |
6267 | } |
6268 | ||
46544258 | 6269 | if (!test_bit(__IGB_DOWN, &adapter->state)) { |
cd14ef54 | 6270 | if (adapter->flags & IGB_FLAG_HAS_MSIX) |
047e0030 | 6271 | wr32(E1000_EIMS, q_vector->eims_value); |
46544258 AD |
6272 | else |
6273 | igb_irq_enable(adapter); | |
6274 | } | |
9d5c8243 AK |
6275 | } |
6276 | ||
46544258 | 6277 | /** |
b980ac18 JK |
6278 | * igb_poll - NAPI Rx polling callback |
6279 | * @napi: napi polling structure | |
6280 | * @budget: count of how many packets we should handle | |
46544258 AD |
6281 | **/ |
6282 | static int igb_poll(struct napi_struct *napi, int budget) | |
9d5c8243 | 6283 | { |
047e0030 | 6284 | struct igb_q_vector *q_vector = container_of(napi, |
b980ac18 JK |
6285 | struct igb_q_vector, |
6286 | napi); | |
16eb8815 | 6287 | bool clean_complete = true; |
9d5c8243 | 6288 | |
421e02f0 | 6289 | #ifdef CONFIG_IGB_DCA |
047e0030 AD |
6290 | if (q_vector->adapter->flags & IGB_FLAG_DCA_ENABLED) |
6291 | igb_update_dca(q_vector); | |
fe4506b6 | 6292 | #endif |
0ba82994 | 6293 | if (q_vector->tx.ring) |
13fde97a | 6294 | clean_complete = igb_clean_tx_irq(q_vector); |
9d5c8243 | 6295 | |
0ba82994 | 6296 | if (q_vector->rx.ring) |
cd392f5c | 6297 | clean_complete &= igb_clean_rx_irq(q_vector, budget); |
047e0030 | 6298 | |
16eb8815 AD |
6299 | /* If all work not completed, return budget and keep polling */ |
6300 | if (!clean_complete) | |
6301 | return budget; | |
46544258 | 6302 | |
9d5c8243 | 6303 | /* If not enough Rx work done, exit the polling mode */ |
16eb8815 AD |
6304 | napi_complete(napi); |
6305 | igb_ring_irq_enable(q_vector); | |
9d5c8243 | 6306 | |
16eb8815 | 6307 | return 0; |
9d5c8243 | 6308 | } |
6d8126f9 | 6309 | |
9d5c8243 | 6310 | /** |
b980ac18 JK |
6311 | * igb_clean_tx_irq - Reclaim resources after transmit completes |
6312 | * @q_vector: pointer to q_vector containing needed info | |
49ce9c2c | 6313 | * |
b980ac18 | 6314 | * returns true if ring is completely cleaned |
9d5c8243 | 6315 | **/ |
047e0030 | 6316 | static bool igb_clean_tx_irq(struct igb_q_vector *q_vector) |
9d5c8243 | 6317 | { |
047e0030 | 6318 | struct igb_adapter *adapter = q_vector->adapter; |
0ba82994 | 6319 | struct igb_ring *tx_ring = q_vector->tx.ring; |
06034649 | 6320 | struct igb_tx_buffer *tx_buffer; |
f4128785 | 6321 | union e1000_adv_tx_desc *tx_desc; |
9d5c8243 | 6322 | unsigned int total_bytes = 0, total_packets = 0; |
0ba82994 | 6323 | unsigned int budget = q_vector->tx.work_limit; |
8542db05 | 6324 | unsigned int i = tx_ring->next_to_clean; |
9d5c8243 | 6325 | |
13fde97a AD |
6326 | if (test_bit(__IGB_DOWN, &adapter->state)) |
6327 | return true; | |
0e014cb1 | 6328 | |
06034649 | 6329 | tx_buffer = &tx_ring->tx_buffer_info[i]; |
13fde97a | 6330 | tx_desc = IGB_TX_DESC(tx_ring, i); |
8542db05 | 6331 | i -= tx_ring->count; |
9d5c8243 | 6332 | |
f4128785 AD |
6333 | do { |
6334 | union e1000_adv_tx_desc *eop_desc = tx_buffer->next_to_watch; | |
8542db05 AD |
6335 | |
6336 | /* if next_to_watch is not set then there is no work pending */ | |
6337 | if (!eop_desc) | |
6338 | break; | |
13fde97a | 6339 | |
f4128785 | 6340 | /* prevent any other reads prior to eop_desc */ |
70d289bc | 6341 | read_barrier_depends(); |
f4128785 | 6342 | |
13fde97a AD |
6343 | /* if DD is not set pending work has not been completed */ |
6344 | if (!(eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD))) | |
6345 | break; | |
6346 | ||
8542db05 AD |
6347 | /* clear next_to_watch to prevent false hangs */ |
6348 | tx_buffer->next_to_watch = NULL; | |
9d5c8243 | 6349 | |
ebe42d16 AD |
6350 | /* update the statistics for this packet */ |
6351 | total_bytes += tx_buffer->bytecount; | |
6352 | total_packets += tx_buffer->gso_segs; | |
13fde97a | 6353 | |
ebe42d16 AD |
6354 | /* free the skb */ |
6355 | dev_kfree_skb_any(tx_buffer->skb); | |
13fde97a | 6356 | |
ebe42d16 AD |
6357 | /* unmap skb header data */ |
6358 | dma_unmap_single(tx_ring->dev, | |
c9f14bf3 AD |
6359 | dma_unmap_addr(tx_buffer, dma), |
6360 | dma_unmap_len(tx_buffer, len), | |
ebe42d16 AD |
6361 | DMA_TO_DEVICE); |
6362 | ||
c9f14bf3 AD |
6363 | /* clear tx_buffer data */ |
6364 | tx_buffer->skb = NULL; | |
6365 | dma_unmap_len_set(tx_buffer, len, 0); | |
6366 | ||
ebe42d16 AD |
6367 | /* clear last DMA location and unmap remaining buffers */ |
6368 | while (tx_desc != eop_desc) { | |
13fde97a AD |
6369 | tx_buffer++; |
6370 | tx_desc++; | |
9d5c8243 | 6371 | i++; |
8542db05 AD |
6372 | if (unlikely(!i)) { |
6373 | i -= tx_ring->count; | |
06034649 | 6374 | tx_buffer = tx_ring->tx_buffer_info; |
13fde97a AD |
6375 | tx_desc = IGB_TX_DESC(tx_ring, 0); |
6376 | } | |
ebe42d16 AD |
6377 | |
6378 | /* unmap any remaining paged data */ | |
c9f14bf3 | 6379 | if (dma_unmap_len(tx_buffer, len)) { |
ebe42d16 | 6380 | dma_unmap_page(tx_ring->dev, |
c9f14bf3 AD |
6381 | dma_unmap_addr(tx_buffer, dma), |
6382 | dma_unmap_len(tx_buffer, len), | |
ebe42d16 | 6383 | DMA_TO_DEVICE); |
c9f14bf3 | 6384 | dma_unmap_len_set(tx_buffer, len, 0); |
ebe42d16 AD |
6385 | } |
6386 | } | |
6387 | ||
ebe42d16 AD |
6388 | /* move us one more past the eop_desc for start of next pkt */ |
6389 | tx_buffer++; | |
6390 | tx_desc++; | |
6391 | i++; | |
6392 | if (unlikely(!i)) { | |
6393 | i -= tx_ring->count; | |
6394 | tx_buffer = tx_ring->tx_buffer_info; | |
6395 | tx_desc = IGB_TX_DESC(tx_ring, 0); | |
6396 | } | |
f4128785 AD |
6397 | |
6398 | /* issue prefetch for next Tx descriptor */ | |
6399 | prefetch(tx_desc); | |
6400 | ||
6401 | /* update budget accounting */ | |
6402 | budget--; | |
6403 | } while (likely(budget)); | |
0e014cb1 | 6404 | |
bdbc0631 ED |
6405 | netdev_tx_completed_queue(txring_txq(tx_ring), |
6406 | total_packets, total_bytes); | |
8542db05 | 6407 | i += tx_ring->count; |
9d5c8243 | 6408 | tx_ring->next_to_clean = i; |
13fde97a AD |
6409 | u64_stats_update_begin(&tx_ring->tx_syncp); |
6410 | tx_ring->tx_stats.bytes += total_bytes; | |
6411 | tx_ring->tx_stats.packets += total_packets; | |
6412 | u64_stats_update_end(&tx_ring->tx_syncp); | |
0ba82994 AD |
6413 | q_vector->tx.total_bytes += total_bytes; |
6414 | q_vector->tx.total_packets += total_packets; | |
9d5c8243 | 6415 | |
6d095fa8 | 6416 | if (test_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags)) { |
13fde97a | 6417 | struct e1000_hw *hw = &adapter->hw; |
12dcd86b | 6418 | |
9d5c8243 | 6419 | /* Detect a transmit hang in hardware, this serializes the |
b980ac18 JK |
6420 | * check with the clearing of time_stamp and movement of i |
6421 | */ | |
6d095fa8 | 6422 | clear_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags); |
f4128785 | 6423 | if (tx_buffer->next_to_watch && |
8542db05 | 6424 | time_after(jiffies, tx_buffer->time_stamp + |
8e95a202 JP |
6425 | (adapter->tx_timeout_factor * HZ)) && |
6426 | !(rd32(E1000_STATUS) & E1000_STATUS_TXOFF)) { | |
9d5c8243 | 6427 | |
9d5c8243 | 6428 | /* detected Tx unit hang */ |
59d71989 | 6429 | dev_err(tx_ring->dev, |
9d5c8243 | 6430 | "Detected Tx Unit Hang\n" |
2d064c06 | 6431 | " Tx Queue <%d>\n" |
9d5c8243 AK |
6432 | " TDH <%x>\n" |
6433 | " TDT <%x>\n" | |
6434 | " next_to_use <%x>\n" | |
6435 | " next_to_clean <%x>\n" | |
9d5c8243 AK |
6436 | "buffer_info[next_to_clean]\n" |
6437 | " time_stamp <%lx>\n" | |
8542db05 | 6438 | " next_to_watch <%p>\n" |
9d5c8243 AK |
6439 | " jiffies <%lx>\n" |
6440 | " desc.status <%x>\n", | |
2d064c06 | 6441 | tx_ring->queue_index, |
238ac817 | 6442 | rd32(E1000_TDH(tx_ring->reg_idx)), |
fce99e34 | 6443 | readl(tx_ring->tail), |
9d5c8243 AK |
6444 | tx_ring->next_to_use, |
6445 | tx_ring->next_to_clean, | |
8542db05 | 6446 | tx_buffer->time_stamp, |
f4128785 | 6447 | tx_buffer->next_to_watch, |
9d5c8243 | 6448 | jiffies, |
f4128785 | 6449 | tx_buffer->next_to_watch->wb.status); |
13fde97a AD |
6450 | netif_stop_subqueue(tx_ring->netdev, |
6451 | tx_ring->queue_index); | |
6452 | ||
6453 | /* we are about to reset, no point in enabling stuff */ | |
6454 | return true; | |
9d5c8243 AK |
6455 | } |
6456 | } | |
13fde97a | 6457 | |
21ba6fe1 | 6458 | #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2) |
13fde97a | 6459 | if (unlikely(total_packets && |
b980ac18 JK |
6460 | netif_carrier_ok(tx_ring->netdev) && |
6461 | igb_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD)) { | |
13fde97a AD |
6462 | /* Make sure that anybody stopping the queue after this |
6463 | * sees the new next_to_clean. | |
6464 | */ | |
6465 | smp_mb(); | |
6466 | if (__netif_subqueue_stopped(tx_ring->netdev, | |
6467 | tx_ring->queue_index) && | |
6468 | !(test_bit(__IGB_DOWN, &adapter->state))) { | |
6469 | netif_wake_subqueue(tx_ring->netdev, | |
6470 | tx_ring->queue_index); | |
6471 | ||
6472 | u64_stats_update_begin(&tx_ring->tx_syncp); | |
6473 | tx_ring->tx_stats.restart_queue++; | |
6474 | u64_stats_update_end(&tx_ring->tx_syncp); | |
6475 | } | |
6476 | } | |
6477 | ||
6478 | return !!budget; | |
9d5c8243 AK |
6479 | } |
6480 | ||
cbc8e55f | 6481 | /** |
b980ac18 JK |
6482 | * igb_reuse_rx_page - page flip buffer and store it back on the ring |
6483 | * @rx_ring: rx descriptor ring to store buffers on | |
6484 | * @old_buff: donor buffer to have page reused | |
cbc8e55f | 6485 | * |
b980ac18 | 6486 | * Synchronizes page for reuse by the adapter |
cbc8e55f AD |
6487 | **/ |
6488 | static void igb_reuse_rx_page(struct igb_ring *rx_ring, | |
6489 | struct igb_rx_buffer *old_buff) | |
6490 | { | |
6491 | struct igb_rx_buffer *new_buff; | |
6492 | u16 nta = rx_ring->next_to_alloc; | |
6493 | ||
6494 | new_buff = &rx_ring->rx_buffer_info[nta]; | |
6495 | ||
6496 | /* update, and store next to alloc */ | |
6497 | nta++; | |
6498 | rx_ring->next_to_alloc = (nta < rx_ring->count) ? nta : 0; | |
6499 | ||
6500 | /* transfer page from old buffer to new buffer */ | |
a1f63473 | 6501 | *new_buff = *old_buff; |
cbc8e55f AD |
6502 | |
6503 | /* sync the buffer for use by the device */ | |
6504 | dma_sync_single_range_for_device(rx_ring->dev, old_buff->dma, | |
6505 | old_buff->page_offset, | |
de78d1f9 | 6506 | IGB_RX_BUFSZ, |
cbc8e55f AD |
6507 | DMA_FROM_DEVICE); |
6508 | } | |
6509 | ||
74e238ea AD |
6510 | static bool igb_can_reuse_rx_page(struct igb_rx_buffer *rx_buffer, |
6511 | struct page *page, | |
6512 | unsigned int truesize) | |
6513 | { | |
6514 | /* avoid re-using remote pages */ | |
6515 | if (unlikely(page_to_nid(page) != numa_node_id())) | |
6516 | return false; | |
6517 | ||
6518 | #if (PAGE_SIZE < 8192) | |
6519 | /* if we are only owner of page we can reuse it */ | |
6520 | if (unlikely(page_count(page) != 1)) | |
6521 | return false; | |
6522 | ||
6523 | /* flip page offset to other buffer */ | |
6524 | rx_buffer->page_offset ^= IGB_RX_BUFSZ; | |
6525 | ||
6526 | /* since we are the only owner of the page and we need to | |
6527 | * increment it, just set the value to 2 in order to avoid | |
6528 | * an unnecessary locked operation | |
6529 | */ | |
6530 | atomic_set(&page->_count, 2); | |
6531 | #else | |
6532 | /* move offset up to the next cache line */ | |
6533 | rx_buffer->page_offset += truesize; | |
6534 | ||
6535 | if (rx_buffer->page_offset > (PAGE_SIZE - IGB_RX_BUFSZ)) | |
6536 | return false; | |
6537 | ||
6538 | /* bump ref count on page before it is given to the stack */ | |
6539 | get_page(page); | |
6540 | #endif | |
6541 | ||
6542 | return true; | |
6543 | } | |
6544 | ||
cbc8e55f | 6545 | /** |
b980ac18 JK |
6546 | * igb_add_rx_frag - Add contents of Rx buffer to sk_buff |
6547 | * @rx_ring: rx descriptor ring to transact packets on | |
6548 | * @rx_buffer: buffer containing page to add | |
6549 | * @rx_desc: descriptor containing length of buffer written by hardware | |
6550 | * @skb: sk_buff to place the data into | |
cbc8e55f | 6551 | * |
b980ac18 JK |
6552 | * This function will add the data contained in rx_buffer->page to the skb. |
6553 | * This is done either through a direct copy if the data in the buffer is | |
6554 | * less than the skb header size, otherwise it will just attach the page as | |
6555 | * a frag to the skb. | |
cbc8e55f | 6556 | * |
b980ac18 JK |
6557 | * The function will then update the page offset if necessary and return |
6558 | * true if the buffer can be reused by the adapter. | |
cbc8e55f AD |
6559 | **/ |
6560 | static bool igb_add_rx_frag(struct igb_ring *rx_ring, | |
6561 | struct igb_rx_buffer *rx_buffer, | |
6562 | union e1000_adv_rx_desc *rx_desc, | |
6563 | struct sk_buff *skb) | |
6564 | { | |
6565 | struct page *page = rx_buffer->page; | |
6566 | unsigned int size = le16_to_cpu(rx_desc->wb.upper.length); | |
74e238ea AD |
6567 | #if (PAGE_SIZE < 8192) |
6568 | unsigned int truesize = IGB_RX_BUFSZ; | |
6569 | #else | |
6570 | unsigned int truesize = ALIGN(size, L1_CACHE_BYTES); | |
6571 | #endif | |
cbc8e55f AD |
6572 | |
6573 | if ((size <= IGB_RX_HDR_LEN) && !skb_is_nonlinear(skb)) { | |
6574 | unsigned char *va = page_address(page) + rx_buffer->page_offset; | |
6575 | ||
cbc8e55f AD |
6576 | if (igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TSIP)) { |
6577 | igb_ptp_rx_pktstamp(rx_ring->q_vector, va, skb); | |
6578 | va += IGB_TS_HDR_LEN; | |
6579 | size -= IGB_TS_HDR_LEN; | |
6580 | } | |
6581 | ||
cbc8e55f AD |
6582 | memcpy(__skb_put(skb, size), va, ALIGN(size, sizeof(long))); |
6583 | ||
6584 | /* we can reuse buffer as-is, just make sure it is local */ | |
6585 | if (likely(page_to_nid(page) == numa_node_id())) | |
6586 | return true; | |
6587 | ||
6588 | /* this page cannot be reused so discard it */ | |
6589 | put_page(page); | |
6590 | return false; | |
6591 | } | |
6592 | ||
6593 | skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, page, | |
74e238ea | 6594 | rx_buffer->page_offset, size, truesize); |
cbc8e55f | 6595 | |
74e238ea AD |
6596 | return igb_can_reuse_rx_page(rx_buffer, page, truesize); |
6597 | } | |
cbc8e55f | 6598 | |
2e334eee AD |
6599 | static struct sk_buff *igb_fetch_rx_buffer(struct igb_ring *rx_ring, |
6600 | union e1000_adv_rx_desc *rx_desc, | |
6601 | struct sk_buff *skb) | |
6602 | { | |
6603 | struct igb_rx_buffer *rx_buffer; | |
6604 | struct page *page; | |
6605 | ||
6606 | rx_buffer = &rx_ring->rx_buffer_info[rx_ring->next_to_clean]; | |
6607 | ||
2e334eee AD |
6608 | page = rx_buffer->page; |
6609 | prefetchw(page); | |
6610 | ||
6611 | if (likely(!skb)) { | |
6612 | void *page_addr = page_address(page) + | |
6613 | rx_buffer->page_offset; | |
6614 | ||
6615 | /* prefetch first cache line of first page */ | |
6616 | prefetch(page_addr); | |
6617 | #if L1_CACHE_BYTES < 128 | |
6618 | prefetch(page_addr + L1_CACHE_BYTES); | |
6619 | #endif | |
6620 | ||
6621 | /* allocate a skb to store the frags */ | |
6622 | skb = netdev_alloc_skb_ip_align(rx_ring->netdev, | |
6623 | IGB_RX_HDR_LEN); | |
6624 | if (unlikely(!skb)) { | |
6625 | rx_ring->rx_stats.alloc_failed++; | |
6626 | return NULL; | |
6627 | } | |
6628 | ||
b980ac18 | 6629 | /* we will be copying header into skb->data in |
2e334eee AD |
6630 | * pskb_may_pull so it is in our interest to prefetch |
6631 | * it now to avoid a possible cache miss | |
6632 | */ | |
6633 | prefetchw(skb->data); | |
6634 | } | |
6635 | ||
6636 | /* we are reusing so sync this buffer for CPU use */ | |
6637 | dma_sync_single_range_for_cpu(rx_ring->dev, | |
6638 | rx_buffer->dma, | |
6639 | rx_buffer->page_offset, | |
de78d1f9 | 6640 | IGB_RX_BUFSZ, |
2e334eee AD |
6641 | DMA_FROM_DEVICE); |
6642 | ||
6643 | /* pull page into skb */ | |
6644 | if (igb_add_rx_frag(rx_ring, rx_buffer, rx_desc, skb)) { | |
6645 | /* hand second half of page back to the ring */ | |
6646 | igb_reuse_rx_page(rx_ring, rx_buffer); | |
6647 | } else { | |
6648 | /* we are not reusing the buffer so unmap it */ | |
6649 | dma_unmap_page(rx_ring->dev, rx_buffer->dma, | |
6650 | PAGE_SIZE, DMA_FROM_DEVICE); | |
6651 | } | |
6652 | ||
6653 | /* clear contents of rx_buffer */ | |
6654 | rx_buffer->page = NULL; | |
6655 | ||
6656 | return skb; | |
6657 | } | |
6658 | ||
cd392f5c | 6659 | static inline void igb_rx_checksum(struct igb_ring *ring, |
3ceb90fd AD |
6660 | union e1000_adv_rx_desc *rx_desc, |
6661 | struct sk_buff *skb) | |
9d5c8243 | 6662 | { |
bc8acf2c | 6663 | skb_checksum_none_assert(skb); |
9d5c8243 | 6664 | |
294e7d78 | 6665 | /* Ignore Checksum bit is set */ |
3ceb90fd | 6666 | if (igb_test_staterr(rx_desc, E1000_RXD_STAT_IXSM)) |
294e7d78 AD |
6667 | return; |
6668 | ||
6669 | /* Rx checksum disabled via ethtool */ | |
6670 | if (!(ring->netdev->features & NETIF_F_RXCSUM)) | |
9d5c8243 | 6671 | return; |
85ad76b2 | 6672 | |
9d5c8243 | 6673 | /* TCP/UDP checksum error bit is set */ |
3ceb90fd AD |
6674 | if (igb_test_staterr(rx_desc, |
6675 | E1000_RXDEXT_STATERR_TCPE | | |
6676 | E1000_RXDEXT_STATERR_IPE)) { | |
b980ac18 | 6677 | /* work around errata with sctp packets where the TCPE aka |
b9473560 JB |
6678 | * L4E bit is set incorrectly on 64 byte (60 byte w/o crc) |
6679 | * packets, (aka let the stack check the crc32c) | |
6680 | */ | |
866cff06 AD |
6681 | if (!((skb->len == 60) && |
6682 | test_bit(IGB_RING_FLAG_RX_SCTP_CSUM, &ring->flags))) { | |
12dcd86b | 6683 | u64_stats_update_begin(&ring->rx_syncp); |
04a5fcaa | 6684 | ring->rx_stats.csum_err++; |
12dcd86b ED |
6685 | u64_stats_update_end(&ring->rx_syncp); |
6686 | } | |
9d5c8243 | 6687 | /* let the stack verify checksum errors */ |
9d5c8243 AK |
6688 | return; |
6689 | } | |
6690 | /* It must be a TCP or UDP packet with a valid checksum */ | |
3ceb90fd AD |
6691 | if (igb_test_staterr(rx_desc, E1000_RXD_STAT_TCPCS | |
6692 | E1000_RXD_STAT_UDPCS)) | |
9d5c8243 AK |
6693 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
6694 | ||
3ceb90fd AD |
6695 | dev_dbg(ring->dev, "cksum success: bits %08X\n", |
6696 | le32_to_cpu(rx_desc->wb.upper.status_error)); | |
9d5c8243 AK |
6697 | } |
6698 | ||
077887c3 AD |
6699 | static inline void igb_rx_hash(struct igb_ring *ring, |
6700 | union e1000_adv_rx_desc *rx_desc, | |
6701 | struct sk_buff *skb) | |
6702 | { | |
6703 | if (ring->netdev->features & NETIF_F_RXHASH) | |
42bdf083 TH |
6704 | skb_set_hash(skb, |
6705 | le32_to_cpu(rx_desc->wb.lower.hi_dword.rss), | |
6706 | PKT_HASH_TYPE_L3); | |
077887c3 AD |
6707 | } |
6708 | ||
2e334eee | 6709 | /** |
b980ac18 JK |
6710 | * igb_is_non_eop - process handling of non-EOP buffers |
6711 | * @rx_ring: Rx ring being processed | |
6712 | * @rx_desc: Rx descriptor for current buffer | |
6713 | * @skb: current socket buffer containing buffer in progress | |
2e334eee | 6714 | * |
b980ac18 JK |
6715 | * This function updates next to clean. If the buffer is an EOP buffer |
6716 | * this function exits returning false, otherwise it will place the | |
6717 | * sk_buff in the next buffer to be chained and return true indicating | |
6718 | * that this is in fact a non-EOP buffer. | |
2e334eee AD |
6719 | **/ |
6720 | static bool igb_is_non_eop(struct igb_ring *rx_ring, | |
6721 | union e1000_adv_rx_desc *rx_desc) | |
6722 | { | |
6723 | u32 ntc = rx_ring->next_to_clean + 1; | |
6724 | ||
6725 | /* fetch, update, and store next to clean */ | |
6726 | ntc = (ntc < rx_ring->count) ? ntc : 0; | |
6727 | rx_ring->next_to_clean = ntc; | |
6728 | ||
6729 | prefetch(IGB_RX_DESC(rx_ring, ntc)); | |
6730 | ||
6731 | if (likely(igb_test_staterr(rx_desc, E1000_RXD_STAT_EOP))) | |
6732 | return false; | |
6733 | ||
6734 | return true; | |
6735 | } | |
6736 | ||
1a1c225b | 6737 | /** |
b980ac18 JK |
6738 | * igb_get_headlen - determine size of header for LRO/GRO |
6739 | * @data: pointer to the start of the headers | |
6740 | * @max_len: total length of section to find headers in | |
1a1c225b | 6741 | * |
b980ac18 JK |
6742 | * This function is meant to determine the length of headers that will |
6743 | * be recognized by hardware for LRO, and GRO offloads. The main | |
6744 | * motivation of doing this is to only perform one pull for IPv4 TCP | |
6745 | * packets so that we can do basic things like calculating the gso_size | |
6746 | * based on the average data per packet. | |
1a1c225b AD |
6747 | **/ |
6748 | static unsigned int igb_get_headlen(unsigned char *data, | |
6749 | unsigned int max_len) | |
6750 | { | |
6751 | union { | |
6752 | unsigned char *network; | |
6753 | /* l2 headers */ | |
6754 | struct ethhdr *eth; | |
6755 | struct vlan_hdr *vlan; | |
6756 | /* l3 headers */ | |
6757 | struct iphdr *ipv4; | |
6758 | struct ipv6hdr *ipv6; | |
6759 | } hdr; | |
6760 | __be16 protocol; | |
6761 | u8 nexthdr = 0; /* default to not TCP */ | |
6762 | u8 hlen; | |
6763 | ||
6764 | /* this should never happen, but better safe than sorry */ | |
6765 | if (max_len < ETH_HLEN) | |
6766 | return max_len; | |
6767 | ||
6768 | /* initialize network frame pointer */ | |
6769 | hdr.network = data; | |
6770 | ||
6771 | /* set first protocol and move network header forward */ | |
6772 | protocol = hdr.eth->h_proto; | |
6773 | hdr.network += ETH_HLEN; | |
6774 | ||
6775 | /* handle any vlan tag if present */ | |
7c4d16ff | 6776 | if (protocol == htons(ETH_P_8021Q)) { |
1a1c225b AD |
6777 | if ((hdr.network - data) > (max_len - VLAN_HLEN)) |
6778 | return max_len; | |
6779 | ||
6780 | protocol = hdr.vlan->h_vlan_encapsulated_proto; | |
6781 | hdr.network += VLAN_HLEN; | |
6782 | } | |
6783 | ||
6784 | /* handle L3 protocols */ | |
7c4d16ff | 6785 | if (protocol == htons(ETH_P_IP)) { |
1a1c225b AD |
6786 | if ((hdr.network - data) > (max_len - sizeof(struct iphdr))) |
6787 | return max_len; | |
6788 | ||
6789 | /* access ihl as a u8 to avoid unaligned access on ia64 */ | |
6790 | hlen = (hdr.network[0] & 0x0F) << 2; | |
6791 | ||
6792 | /* verify hlen meets minimum size requirements */ | |
6793 | if (hlen < sizeof(struct iphdr)) | |
6794 | return hdr.network - data; | |
6795 | ||
f2fb4ab2 | 6796 | /* record next protocol if header is present */ |
b9555f66 | 6797 | if (!(hdr.ipv4->frag_off & htons(IP_OFFSET))) |
f2fb4ab2 | 6798 | nexthdr = hdr.ipv4->protocol; |
7c4d16ff | 6799 | } else if (protocol == htons(ETH_P_IPV6)) { |
1a1c225b AD |
6800 | if ((hdr.network - data) > (max_len - sizeof(struct ipv6hdr))) |
6801 | return max_len; | |
6802 | ||
6803 | /* record next protocol */ | |
6804 | nexthdr = hdr.ipv6->nexthdr; | |
f2fb4ab2 | 6805 | hlen = sizeof(struct ipv6hdr); |
1a1c225b AD |
6806 | } else { |
6807 | return hdr.network - data; | |
6808 | } | |
6809 | ||
f2fb4ab2 AD |
6810 | /* relocate pointer to start of L4 header */ |
6811 | hdr.network += hlen; | |
6812 | ||
1a1c225b AD |
6813 | /* finally sort out TCP */ |
6814 | if (nexthdr == IPPROTO_TCP) { | |
6815 | if ((hdr.network - data) > (max_len - sizeof(struct tcphdr))) | |
6816 | return max_len; | |
6817 | ||
6818 | /* access doff as a u8 to avoid unaligned access on ia64 */ | |
6819 | hlen = (hdr.network[12] & 0xF0) >> 2; | |
6820 | ||
6821 | /* verify hlen meets minimum size requirements */ | |
6822 | if (hlen < sizeof(struct tcphdr)) | |
6823 | return hdr.network - data; | |
6824 | ||
6825 | hdr.network += hlen; | |
6826 | } else if (nexthdr == IPPROTO_UDP) { | |
6827 | if ((hdr.network - data) > (max_len - sizeof(struct udphdr))) | |
6828 | return max_len; | |
6829 | ||
6830 | hdr.network += sizeof(struct udphdr); | |
6831 | } | |
6832 | ||
b980ac18 | 6833 | /* If everything has gone correctly hdr.network should be the |
1a1c225b AD |
6834 | * data section of the packet and will be the end of the header. |
6835 | * If not then it probably represents the end of the last recognized | |
6836 | * header. | |
6837 | */ | |
6838 | if ((hdr.network - data) < max_len) | |
6839 | return hdr.network - data; | |
6840 | else | |
6841 | return max_len; | |
6842 | } | |
6843 | ||
6844 | /** | |
b980ac18 JK |
6845 | * igb_pull_tail - igb specific version of skb_pull_tail |
6846 | * @rx_ring: rx descriptor ring packet is being transacted on | |
6847 | * @rx_desc: pointer to the EOP Rx descriptor | |
6848 | * @skb: pointer to current skb being adjusted | |
1a1c225b | 6849 | * |
b980ac18 JK |
6850 | * This function is an igb specific version of __pskb_pull_tail. The |
6851 | * main difference between this version and the original function is that | |
6852 | * this function can make several assumptions about the state of things | |
6853 | * that allow for significant optimizations versus the standard function. | |
6854 | * As a result we can do things like drop a frag and maintain an accurate | |
6855 | * truesize for the skb. | |
1a1c225b AD |
6856 | */ |
6857 | static void igb_pull_tail(struct igb_ring *rx_ring, | |
6858 | union e1000_adv_rx_desc *rx_desc, | |
6859 | struct sk_buff *skb) | |
2d94d8ab | 6860 | { |
1a1c225b AD |
6861 | struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[0]; |
6862 | unsigned char *va; | |
6863 | unsigned int pull_len; | |
6864 | ||
b980ac18 | 6865 | /* it is valid to use page_address instead of kmap since we are |
1a1c225b AD |
6866 | * working with pages allocated out of the lomem pool per |
6867 | * alloc_page(GFP_ATOMIC) | |
2d94d8ab | 6868 | */ |
1a1c225b AD |
6869 | va = skb_frag_address(frag); |
6870 | ||
1a1c225b AD |
6871 | if (igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TSIP)) { |
6872 | /* retrieve timestamp from buffer */ | |
6873 | igb_ptp_rx_pktstamp(rx_ring->q_vector, va, skb); | |
6874 | ||
6875 | /* update pointers to remove timestamp header */ | |
6876 | skb_frag_size_sub(frag, IGB_TS_HDR_LEN); | |
6877 | frag->page_offset += IGB_TS_HDR_LEN; | |
6878 | skb->data_len -= IGB_TS_HDR_LEN; | |
6879 | skb->len -= IGB_TS_HDR_LEN; | |
6880 | ||
6881 | /* move va to start of packet data */ | |
6882 | va += IGB_TS_HDR_LEN; | |
6883 | } | |
6884 | ||
b980ac18 | 6885 | /* we need the header to contain the greater of either ETH_HLEN or |
1a1c225b AD |
6886 | * 60 bytes if the skb->len is less than 60 for skb_pad. |
6887 | */ | |
6888 | pull_len = igb_get_headlen(va, IGB_RX_HDR_LEN); | |
6889 | ||
6890 | /* align pull length to size of long to optimize memcpy performance */ | |
6891 | skb_copy_to_linear_data(skb, va, ALIGN(pull_len, sizeof(long))); | |
6892 | ||
6893 | /* update all of the pointers */ | |
6894 | skb_frag_size_sub(frag, pull_len); | |
6895 | frag->page_offset += pull_len; | |
6896 | skb->data_len -= pull_len; | |
6897 | skb->tail += pull_len; | |
6898 | } | |
6899 | ||
6900 | /** | |
b980ac18 JK |
6901 | * igb_cleanup_headers - Correct corrupted or empty headers |
6902 | * @rx_ring: rx descriptor ring packet is being transacted on | |
6903 | * @rx_desc: pointer to the EOP Rx descriptor | |
6904 | * @skb: pointer to current skb being fixed | |
1a1c225b | 6905 | * |
b980ac18 JK |
6906 | * Address the case where we are pulling data in on pages only |
6907 | * and as such no data is present in the skb header. | |
1a1c225b | 6908 | * |
b980ac18 JK |
6909 | * In addition if skb is not at least 60 bytes we need to pad it so that |
6910 | * it is large enough to qualify as a valid Ethernet frame. | |
1a1c225b | 6911 | * |
b980ac18 | 6912 | * Returns true if an error was encountered and skb was freed. |
1a1c225b AD |
6913 | **/ |
6914 | static bool igb_cleanup_headers(struct igb_ring *rx_ring, | |
6915 | union e1000_adv_rx_desc *rx_desc, | |
6916 | struct sk_buff *skb) | |
6917 | { | |
1a1c225b AD |
6918 | if (unlikely((igb_test_staterr(rx_desc, |
6919 | E1000_RXDEXT_ERR_FRAME_ERR_MASK)))) { | |
6920 | struct net_device *netdev = rx_ring->netdev; | |
6921 | if (!(netdev->features & NETIF_F_RXALL)) { | |
6922 | dev_kfree_skb_any(skb); | |
6923 | return true; | |
6924 | } | |
6925 | } | |
6926 | ||
6927 | /* place header in linear portion of buffer */ | |
6928 | if (skb_is_nonlinear(skb)) | |
6929 | igb_pull_tail(rx_ring, rx_desc, skb); | |
6930 | ||
6931 | /* if skb_pad returns an error the skb was freed */ | |
6932 | if (unlikely(skb->len < 60)) { | |
6933 | int pad_len = 60 - skb->len; | |
6934 | ||
6935 | if (skb_pad(skb, pad_len)) | |
6936 | return true; | |
6937 | __skb_put(skb, pad_len); | |
6938 | } | |
6939 | ||
6940 | return false; | |
2d94d8ab AD |
6941 | } |
6942 | ||
db2ee5bd | 6943 | /** |
b980ac18 JK |
6944 | * igb_process_skb_fields - Populate skb header fields from Rx descriptor |
6945 | * @rx_ring: rx descriptor ring packet is being transacted on | |
6946 | * @rx_desc: pointer to the EOP Rx descriptor | |
6947 | * @skb: pointer to current skb being populated | |
db2ee5bd | 6948 | * |
b980ac18 JK |
6949 | * This function checks the ring, descriptor, and packet information in |
6950 | * order to populate the hash, checksum, VLAN, timestamp, protocol, and | |
6951 | * other fields within the skb. | |
db2ee5bd AD |
6952 | **/ |
6953 | static void igb_process_skb_fields(struct igb_ring *rx_ring, | |
6954 | union e1000_adv_rx_desc *rx_desc, | |
6955 | struct sk_buff *skb) | |
6956 | { | |
6957 | struct net_device *dev = rx_ring->netdev; | |
6958 | ||
6959 | igb_rx_hash(rx_ring, rx_desc, skb); | |
6960 | ||
6961 | igb_rx_checksum(rx_ring, rx_desc, skb); | |
6962 | ||
5499a968 JK |
6963 | if (igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TS) && |
6964 | !igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TSIP)) | |
6965 | igb_ptp_rx_rgtstamp(rx_ring->q_vector, skb); | |
db2ee5bd | 6966 | |
f646968f | 6967 | if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) && |
db2ee5bd AD |
6968 | igb_test_staterr(rx_desc, E1000_RXD_STAT_VP)) { |
6969 | u16 vid; | |
9005df38 | 6970 | |
db2ee5bd AD |
6971 | if (igb_test_staterr(rx_desc, E1000_RXDEXT_STATERR_LB) && |
6972 | test_bit(IGB_RING_FLAG_RX_LB_VLAN_BSWAP, &rx_ring->flags)) | |
6973 | vid = be16_to_cpu(rx_desc->wb.upper.vlan); | |
6974 | else | |
6975 | vid = le16_to_cpu(rx_desc->wb.upper.vlan); | |
6976 | ||
86a9bad3 | 6977 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); |
db2ee5bd AD |
6978 | } |
6979 | ||
6980 | skb_record_rx_queue(skb, rx_ring->queue_index); | |
6981 | ||
6982 | skb->protocol = eth_type_trans(skb, rx_ring->netdev); | |
6983 | } | |
6984 | ||
2e334eee | 6985 | static bool igb_clean_rx_irq(struct igb_q_vector *q_vector, const int budget) |
9d5c8243 | 6986 | { |
0ba82994 | 6987 | struct igb_ring *rx_ring = q_vector->rx.ring; |
1a1c225b | 6988 | struct sk_buff *skb = rx_ring->skb; |
9d5c8243 | 6989 | unsigned int total_bytes = 0, total_packets = 0; |
16eb8815 | 6990 | u16 cleaned_count = igb_desc_unused(rx_ring); |
9d5c8243 | 6991 | |
57ba34c9 | 6992 | while (likely(total_packets < budget)) { |
2e334eee | 6993 | union e1000_adv_rx_desc *rx_desc; |
bf36c1a0 | 6994 | |
2e334eee AD |
6995 | /* return some buffers to hardware, one at a time is too slow */ |
6996 | if (cleaned_count >= IGB_RX_BUFFER_WRITE) { | |
6997 | igb_alloc_rx_buffers(rx_ring, cleaned_count); | |
6998 | cleaned_count = 0; | |
6999 | } | |
bf36c1a0 | 7000 | |
2e334eee | 7001 | rx_desc = IGB_RX_DESC(rx_ring, rx_ring->next_to_clean); |
16eb8815 | 7002 | |
2e334eee AD |
7003 | if (!igb_test_staterr(rx_desc, E1000_RXD_STAT_DD)) |
7004 | break; | |
9d5c8243 | 7005 | |
74e238ea AD |
7006 | /* This memory barrier is needed to keep us from reading |
7007 | * any other fields out of the rx_desc until we know the | |
7008 | * RXD_STAT_DD bit is set | |
7009 | */ | |
7010 | rmb(); | |
7011 | ||
2e334eee | 7012 | /* retrieve a buffer from the ring */ |
f9d40f6a | 7013 | skb = igb_fetch_rx_buffer(rx_ring, rx_desc, skb); |
9d5c8243 | 7014 | |
2e334eee AD |
7015 | /* exit if we failed to retrieve a buffer */ |
7016 | if (!skb) | |
7017 | break; | |
1a1c225b | 7018 | |
2e334eee | 7019 | cleaned_count++; |
1a1c225b | 7020 | |
2e334eee AD |
7021 | /* fetch next buffer in frame if non-eop */ |
7022 | if (igb_is_non_eop(rx_ring, rx_desc)) | |
7023 | continue; | |
1a1c225b AD |
7024 | |
7025 | /* verify the packet layout is correct */ | |
7026 | if (igb_cleanup_headers(rx_ring, rx_desc, skb)) { | |
7027 | skb = NULL; | |
7028 | continue; | |
9d5c8243 | 7029 | } |
9d5c8243 | 7030 | |
db2ee5bd | 7031 | /* probably a little skewed due to removing CRC */ |
3ceb90fd | 7032 | total_bytes += skb->len; |
3ceb90fd | 7033 | |
db2ee5bd AD |
7034 | /* populate checksum, timestamp, VLAN, and protocol */ |
7035 | igb_process_skb_fields(rx_ring, rx_desc, skb); | |
3ceb90fd | 7036 | |
b2cb09b1 | 7037 | napi_gro_receive(&q_vector->napi, skb); |
9d5c8243 | 7038 | |
1a1c225b AD |
7039 | /* reset skb pointer */ |
7040 | skb = NULL; | |
7041 | ||
2e334eee AD |
7042 | /* update budget accounting */ |
7043 | total_packets++; | |
57ba34c9 | 7044 | } |
bf36c1a0 | 7045 | |
1a1c225b AD |
7046 | /* place incomplete frames back on ring for completion */ |
7047 | rx_ring->skb = skb; | |
7048 | ||
12dcd86b | 7049 | u64_stats_update_begin(&rx_ring->rx_syncp); |
9d5c8243 AK |
7050 | rx_ring->rx_stats.packets += total_packets; |
7051 | rx_ring->rx_stats.bytes += total_bytes; | |
12dcd86b | 7052 | u64_stats_update_end(&rx_ring->rx_syncp); |
0ba82994 AD |
7053 | q_vector->rx.total_packets += total_packets; |
7054 | q_vector->rx.total_bytes += total_bytes; | |
c023cd88 AD |
7055 | |
7056 | if (cleaned_count) | |
cd392f5c | 7057 | igb_alloc_rx_buffers(rx_ring, cleaned_count); |
c023cd88 | 7058 | |
da1f1dfe | 7059 | return total_packets < budget; |
9d5c8243 AK |
7060 | } |
7061 | ||
c023cd88 | 7062 | static bool igb_alloc_mapped_page(struct igb_ring *rx_ring, |
06034649 | 7063 | struct igb_rx_buffer *bi) |
c023cd88 AD |
7064 | { |
7065 | struct page *page = bi->page; | |
cbc8e55f | 7066 | dma_addr_t dma; |
c023cd88 | 7067 | |
cbc8e55f AD |
7068 | /* since we are recycling buffers we should seldom need to alloc */ |
7069 | if (likely(page)) | |
c023cd88 AD |
7070 | return true; |
7071 | ||
cbc8e55f AD |
7072 | /* alloc new page for storage */ |
7073 | page = __skb_alloc_page(GFP_ATOMIC | __GFP_COLD, NULL); | |
7074 | if (unlikely(!page)) { | |
7075 | rx_ring->rx_stats.alloc_failed++; | |
7076 | return false; | |
c023cd88 AD |
7077 | } |
7078 | ||
cbc8e55f AD |
7079 | /* map page for use */ |
7080 | dma = dma_map_page(rx_ring->dev, page, 0, PAGE_SIZE, DMA_FROM_DEVICE); | |
c023cd88 | 7081 | |
b980ac18 | 7082 | /* if mapping failed free memory back to system since |
cbc8e55f AD |
7083 | * there isn't much point in holding memory we can't use |
7084 | */ | |
1a1c225b | 7085 | if (dma_mapping_error(rx_ring->dev, dma)) { |
cbc8e55f AD |
7086 | __free_page(page); |
7087 | ||
c023cd88 AD |
7088 | rx_ring->rx_stats.alloc_failed++; |
7089 | return false; | |
7090 | } | |
7091 | ||
1a1c225b | 7092 | bi->dma = dma; |
cbc8e55f AD |
7093 | bi->page = page; |
7094 | bi->page_offset = 0; | |
1a1c225b | 7095 | |
c023cd88 AD |
7096 | return true; |
7097 | } | |
7098 | ||
9d5c8243 | 7099 | /** |
b980ac18 JK |
7100 | * igb_alloc_rx_buffers - Replace used receive buffers; packet split |
7101 | * @adapter: address of board private structure | |
9d5c8243 | 7102 | **/ |
cd392f5c | 7103 | void igb_alloc_rx_buffers(struct igb_ring *rx_ring, u16 cleaned_count) |
9d5c8243 | 7104 | { |
9d5c8243 | 7105 | union e1000_adv_rx_desc *rx_desc; |
06034649 | 7106 | struct igb_rx_buffer *bi; |
c023cd88 | 7107 | u16 i = rx_ring->next_to_use; |
9d5c8243 | 7108 | |
cbc8e55f AD |
7109 | /* nothing to do */ |
7110 | if (!cleaned_count) | |
7111 | return; | |
7112 | ||
60136906 | 7113 | rx_desc = IGB_RX_DESC(rx_ring, i); |
06034649 | 7114 | bi = &rx_ring->rx_buffer_info[i]; |
c023cd88 | 7115 | i -= rx_ring->count; |
9d5c8243 | 7116 | |
cbc8e55f | 7117 | do { |
1a1c225b | 7118 | if (!igb_alloc_mapped_page(rx_ring, bi)) |
c023cd88 | 7119 | break; |
9d5c8243 | 7120 | |
b980ac18 | 7121 | /* Refresh the desc even if buffer_addrs didn't change |
cbc8e55f AD |
7122 | * because each write-back erases this info. |
7123 | */ | |
f9d40f6a | 7124 | rx_desc->read.pkt_addr = cpu_to_le64(bi->dma + bi->page_offset); |
9d5c8243 | 7125 | |
c023cd88 AD |
7126 | rx_desc++; |
7127 | bi++; | |
9d5c8243 | 7128 | i++; |
c023cd88 | 7129 | if (unlikely(!i)) { |
60136906 | 7130 | rx_desc = IGB_RX_DESC(rx_ring, 0); |
06034649 | 7131 | bi = rx_ring->rx_buffer_info; |
c023cd88 AD |
7132 | i -= rx_ring->count; |
7133 | } | |
7134 | ||
7135 | /* clear the hdr_addr for the next_to_use descriptor */ | |
7136 | rx_desc->read.hdr_addr = 0; | |
cbc8e55f AD |
7137 | |
7138 | cleaned_count--; | |
7139 | } while (cleaned_count); | |
9d5c8243 | 7140 | |
c023cd88 AD |
7141 | i += rx_ring->count; |
7142 | ||
9d5c8243 | 7143 | if (rx_ring->next_to_use != i) { |
cbc8e55f | 7144 | /* record the next descriptor to use */ |
9d5c8243 | 7145 | rx_ring->next_to_use = i; |
9d5c8243 | 7146 | |
cbc8e55f AD |
7147 | /* update next to alloc since we have filled the ring */ |
7148 | rx_ring->next_to_alloc = i; | |
7149 | ||
b980ac18 | 7150 | /* Force memory writes to complete before letting h/w |
9d5c8243 AK |
7151 | * know there are new descriptors to fetch. (Only |
7152 | * applicable for weak-ordered memory model archs, | |
cbc8e55f AD |
7153 | * such as IA-64). |
7154 | */ | |
9d5c8243 | 7155 | wmb(); |
fce99e34 | 7156 | writel(i, rx_ring->tail); |
9d5c8243 AK |
7157 | } |
7158 | } | |
7159 | ||
7160 | /** | |
7161 | * igb_mii_ioctl - | |
7162 | * @netdev: | |
7163 | * @ifreq: | |
7164 | * @cmd: | |
7165 | **/ | |
7166 | static int igb_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
7167 | { | |
7168 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7169 | struct mii_ioctl_data *data = if_mii(ifr); | |
7170 | ||
7171 | if (adapter->hw.phy.media_type != e1000_media_type_copper) | |
7172 | return -EOPNOTSUPP; | |
7173 | ||
7174 | switch (cmd) { | |
7175 | case SIOCGMIIPHY: | |
7176 | data->phy_id = adapter->hw.phy.addr; | |
7177 | break; | |
7178 | case SIOCGMIIREG: | |
f5f4cf08 | 7179 | if (igb_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
9005df38 | 7180 | &data->val_out)) |
9d5c8243 AK |
7181 | return -EIO; |
7182 | break; | |
7183 | case SIOCSMIIREG: | |
7184 | default: | |
7185 | return -EOPNOTSUPP; | |
7186 | } | |
7187 | return 0; | |
7188 | } | |
7189 | ||
7190 | /** | |
7191 | * igb_ioctl - | |
7192 | * @netdev: | |
7193 | * @ifreq: | |
7194 | * @cmd: | |
7195 | **/ | |
7196 | static int igb_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
7197 | { | |
7198 | switch (cmd) { | |
7199 | case SIOCGMIIPHY: | |
7200 | case SIOCGMIIREG: | |
7201 | case SIOCSMIIREG: | |
7202 | return igb_mii_ioctl(netdev, ifr, cmd); | |
6ab5f7b2 JK |
7203 | case SIOCGHWTSTAMP: |
7204 | return igb_ptp_get_ts_config(netdev, ifr); | |
c6cb090b | 7205 | case SIOCSHWTSTAMP: |
6ab5f7b2 | 7206 | return igb_ptp_set_ts_config(netdev, ifr); |
9d5c8243 AK |
7207 | default: |
7208 | return -EOPNOTSUPP; | |
7209 | } | |
7210 | } | |
7211 | ||
009bc06e AD |
7212 | s32 igb_read_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value) |
7213 | { | |
7214 | struct igb_adapter *adapter = hw->back; | |
009bc06e | 7215 | |
23d028cc | 7216 | if (pcie_capability_read_word(adapter->pdev, reg, value)) |
009bc06e AD |
7217 | return -E1000_ERR_CONFIG; |
7218 | ||
009bc06e AD |
7219 | return 0; |
7220 | } | |
7221 | ||
7222 | s32 igb_write_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value) | |
7223 | { | |
7224 | struct igb_adapter *adapter = hw->back; | |
009bc06e | 7225 | |
23d028cc | 7226 | if (pcie_capability_write_word(adapter->pdev, reg, *value)) |
009bc06e AD |
7227 | return -E1000_ERR_CONFIG; |
7228 | ||
009bc06e AD |
7229 | return 0; |
7230 | } | |
7231 | ||
c8f44aff | 7232 | static void igb_vlan_mode(struct net_device *netdev, netdev_features_t features) |
9d5c8243 AK |
7233 | { |
7234 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7235 | struct e1000_hw *hw = &adapter->hw; | |
7236 | u32 ctrl, rctl; | |
f646968f | 7237 | bool enable = !!(features & NETIF_F_HW_VLAN_CTAG_RX); |
9d5c8243 | 7238 | |
5faf030c | 7239 | if (enable) { |
9d5c8243 AK |
7240 | /* enable VLAN tag insert/strip */ |
7241 | ctrl = rd32(E1000_CTRL); | |
7242 | ctrl |= E1000_CTRL_VME; | |
7243 | wr32(E1000_CTRL, ctrl); | |
7244 | ||
51466239 | 7245 | /* Disable CFI check */ |
9d5c8243 | 7246 | rctl = rd32(E1000_RCTL); |
9d5c8243 AK |
7247 | rctl &= ~E1000_RCTL_CFIEN; |
7248 | wr32(E1000_RCTL, rctl); | |
9d5c8243 AK |
7249 | } else { |
7250 | /* disable VLAN tag insert/strip */ | |
7251 | ctrl = rd32(E1000_CTRL); | |
7252 | ctrl &= ~E1000_CTRL_VME; | |
7253 | wr32(E1000_CTRL, ctrl); | |
9d5c8243 AK |
7254 | } |
7255 | ||
e1739522 | 7256 | igb_rlpml_set(adapter); |
9d5c8243 AK |
7257 | } |
7258 | ||
80d5c368 PM |
7259 | static int igb_vlan_rx_add_vid(struct net_device *netdev, |
7260 | __be16 proto, u16 vid) | |
9d5c8243 AK |
7261 | { |
7262 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7263 | struct e1000_hw *hw = &adapter->hw; | |
4ae196df | 7264 | int pf_id = adapter->vfs_allocated_count; |
9d5c8243 | 7265 | |
51466239 AD |
7266 | /* attempt to add filter to vlvf array */ |
7267 | igb_vlvf_set(adapter, vid, true, pf_id); | |
4ae196df | 7268 | |
51466239 AD |
7269 | /* add the filter since PF can receive vlans w/o entry in vlvf */ |
7270 | igb_vfta_set(hw, vid, true); | |
b2cb09b1 JP |
7271 | |
7272 | set_bit(vid, adapter->active_vlans); | |
8e586137 JP |
7273 | |
7274 | return 0; | |
9d5c8243 AK |
7275 | } |
7276 | ||
80d5c368 PM |
7277 | static int igb_vlan_rx_kill_vid(struct net_device *netdev, |
7278 | __be16 proto, u16 vid) | |
9d5c8243 AK |
7279 | { |
7280 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7281 | struct e1000_hw *hw = &adapter->hw; | |
4ae196df | 7282 | int pf_id = adapter->vfs_allocated_count; |
51466239 | 7283 | s32 err; |
9d5c8243 | 7284 | |
51466239 AD |
7285 | /* remove vlan from VLVF table array */ |
7286 | err = igb_vlvf_set(adapter, vid, false, pf_id); | |
9d5c8243 | 7287 | |
51466239 AD |
7288 | /* if vid was not present in VLVF just remove it from table */ |
7289 | if (err) | |
4ae196df | 7290 | igb_vfta_set(hw, vid, false); |
b2cb09b1 JP |
7291 | |
7292 | clear_bit(vid, adapter->active_vlans); | |
8e586137 JP |
7293 | |
7294 | return 0; | |
9d5c8243 AK |
7295 | } |
7296 | ||
7297 | static void igb_restore_vlan(struct igb_adapter *adapter) | |
7298 | { | |
b2cb09b1 | 7299 | u16 vid; |
9d5c8243 | 7300 | |
5faf030c AD |
7301 | igb_vlan_mode(adapter->netdev, adapter->netdev->features); |
7302 | ||
b2cb09b1 | 7303 | for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) |
80d5c368 | 7304 | igb_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid); |
9d5c8243 AK |
7305 | } |
7306 | ||
14ad2513 | 7307 | int igb_set_spd_dplx(struct igb_adapter *adapter, u32 spd, u8 dplx) |
9d5c8243 | 7308 | { |
090b1795 | 7309 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
7310 | struct e1000_mac_info *mac = &adapter->hw.mac; |
7311 | ||
7312 | mac->autoneg = 0; | |
7313 | ||
14ad2513 | 7314 | /* Make sure dplx is at most 1 bit and lsb of speed is not set |
b980ac18 JK |
7315 | * for the switch() below to work |
7316 | */ | |
14ad2513 DD |
7317 | if ((spd & 1) || (dplx & ~1)) |
7318 | goto err_inval; | |
7319 | ||
f502ef7d AA |
7320 | /* Fiber NIC's only allow 1000 gbps Full duplex |
7321 | * and 100Mbps Full duplex for 100baseFx sfp | |
7322 | */ | |
7323 | if (adapter->hw.phy.media_type == e1000_media_type_internal_serdes) { | |
7324 | switch (spd + dplx) { | |
7325 | case SPEED_10 + DUPLEX_HALF: | |
7326 | case SPEED_10 + DUPLEX_FULL: | |
7327 | case SPEED_100 + DUPLEX_HALF: | |
7328 | goto err_inval; | |
7329 | default: | |
7330 | break; | |
7331 | } | |
7332 | } | |
cd2638a8 | 7333 | |
14ad2513 | 7334 | switch (spd + dplx) { |
9d5c8243 AK |
7335 | case SPEED_10 + DUPLEX_HALF: |
7336 | mac->forced_speed_duplex = ADVERTISE_10_HALF; | |
7337 | break; | |
7338 | case SPEED_10 + DUPLEX_FULL: | |
7339 | mac->forced_speed_duplex = ADVERTISE_10_FULL; | |
7340 | break; | |
7341 | case SPEED_100 + DUPLEX_HALF: | |
7342 | mac->forced_speed_duplex = ADVERTISE_100_HALF; | |
7343 | break; | |
7344 | case SPEED_100 + DUPLEX_FULL: | |
7345 | mac->forced_speed_duplex = ADVERTISE_100_FULL; | |
7346 | break; | |
7347 | case SPEED_1000 + DUPLEX_FULL: | |
7348 | mac->autoneg = 1; | |
7349 | adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL; | |
7350 | break; | |
7351 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ | |
7352 | default: | |
14ad2513 | 7353 | goto err_inval; |
9d5c8243 | 7354 | } |
8376dad0 JB |
7355 | |
7356 | /* clear MDI, MDI(-X) override is only allowed when autoneg enabled */ | |
7357 | adapter->hw.phy.mdix = AUTO_ALL_MODES; | |
7358 | ||
9d5c8243 | 7359 | return 0; |
14ad2513 DD |
7360 | |
7361 | err_inval: | |
7362 | dev_err(&pdev->dev, "Unsupported Speed/Duplex configuration\n"); | |
7363 | return -EINVAL; | |
9d5c8243 AK |
7364 | } |
7365 | ||
749ab2cd YZ |
7366 | static int __igb_shutdown(struct pci_dev *pdev, bool *enable_wake, |
7367 | bool runtime) | |
9d5c8243 AK |
7368 | { |
7369 | struct net_device *netdev = pci_get_drvdata(pdev); | |
7370 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7371 | struct e1000_hw *hw = &adapter->hw; | |
2d064c06 | 7372 | u32 ctrl, rctl, status; |
749ab2cd | 7373 | u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol; |
9d5c8243 AK |
7374 | #ifdef CONFIG_PM |
7375 | int retval = 0; | |
7376 | #endif | |
7377 | ||
7378 | netif_device_detach(netdev); | |
7379 | ||
a88f10ec | 7380 | if (netif_running(netdev)) |
749ab2cd | 7381 | __igb_close(netdev, true); |
a88f10ec | 7382 | |
047e0030 | 7383 | igb_clear_interrupt_scheme(adapter); |
9d5c8243 AK |
7384 | |
7385 | #ifdef CONFIG_PM | |
7386 | retval = pci_save_state(pdev); | |
7387 | if (retval) | |
7388 | return retval; | |
7389 | #endif | |
7390 | ||
7391 | status = rd32(E1000_STATUS); | |
7392 | if (status & E1000_STATUS_LU) | |
7393 | wufc &= ~E1000_WUFC_LNKC; | |
7394 | ||
7395 | if (wufc) { | |
7396 | igb_setup_rctl(adapter); | |
ff41f8dc | 7397 | igb_set_rx_mode(netdev); |
9d5c8243 AK |
7398 | |
7399 | /* turn on all-multi mode if wake on multicast is enabled */ | |
7400 | if (wufc & E1000_WUFC_MC) { | |
7401 | rctl = rd32(E1000_RCTL); | |
7402 | rctl |= E1000_RCTL_MPE; | |
7403 | wr32(E1000_RCTL, rctl); | |
7404 | } | |
7405 | ||
7406 | ctrl = rd32(E1000_CTRL); | |
7407 | /* advertise wake from D3Cold */ | |
7408 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
7409 | /* phy power management enable */ | |
7410 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
7411 | ctrl |= E1000_CTRL_ADVD3WUC; | |
7412 | wr32(E1000_CTRL, ctrl); | |
7413 | ||
9d5c8243 | 7414 | /* Allow time for pending master requests to run */ |
330a6d6a | 7415 | igb_disable_pcie_master(hw); |
9d5c8243 AK |
7416 | |
7417 | wr32(E1000_WUC, E1000_WUC_PME_EN); | |
7418 | wr32(E1000_WUFC, wufc); | |
9d5c8243 AK |
7419 | } else { |
7420 | wr32(E1000_WUC, 0); | |
7421 | wr32(E1000_WUFC, 0); | |
9d5c8243 AK |
7422 | } |
7423 | ||
3fe7c4c9 RW |
7424 | *enable_wake = wufc || adapter->en_mng_pt; |
7425 | if (!*enable_wake) | |
88a268c1 NN |
7426 | igb_power_down_link(adapter); |
7427 | else | |
7428 | igb_power_up_link(adapter); | |
9d5c8243 AK |
7429 | |
7430 | /* Release control of h/w to f/w. If f/w is AMT enabled, this | |
b980ac18 JK |
7431 | * would have already happened in close and is redundant. |
7432 | */ | |
9d5c8243 AK |
7433 | igb_release_hw_control(adapter); |
7434 | ||
7435 | pci_disable_device(pdev); | |
7436 | ||
9d5c8243 AK |
7437 | return 0; |
7438 | } | |
7439 | ||
7440 | #ifdef CONFIG_PM | |
d9dd966d | 7441 | #ifdef CONFIG_PM_SLEEP |
749ab2cd | 7442 | static int igb_suspend(struct device *dev) |
3fe7c4c9 RW |
7443 | { |
7444 | int retval; | |
7445 | bool wake; | |
749ab2cd | 7446 | struct pci_dev *pdev = to_pci_dev(dev); |
3fe7c4c9 | 7447 | |
749ab2cd | 7448 | retval = __igb_shutdown(pdev, &wake, 0); |
3fe7c4c9 RW |
7449 | if (retval) |
7450 | return retval; | |
7451 | ||
7452 | if (wake) { | |
7453 | pci_prepare_to_sleep(pdev); | |
7454 | } else { | |
7455 | pci_wake_from_d3(pdev, false); | |
7456 | pci_set_power_state(pdev, PCI_D3hot); | |
7457 | } | |
7458 | ||
7459 | return 0; | |
7460 | } | |
d9dd966d | 7461 | #endif /* CONFIG_PM_SLEEP */ |
3fe7c4c9 | 7462 | |
749ab2cd | 7463 | static int igb_resume(struct device *dev) |
9d5c8243 | 7464 | { |
749ab2cd | 7465 | struct pci_dev *pdev = to_pci_dev(dev); |
9d5c8243 AK |
7466 | struct net_device *netdev = pci_get_drvdata(pdev); |
7467 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7468 | struct e1000_hw *hw = &adapter->hw; | |
7469 | u32 err; | |
7470 | ||
7471 | pci_set_power_state(pdev, PCI_D0); | |
7472 | pci_restore_state(pdev); | |
b94f2d77 | 7473 | pci_save_state(pdev); |
42bfd33a | 7474 | |
aed5dec3 | 7475 | err = pci_enable_device_mem(pdev); |
9d5c8243 AK |
7476 | if (err) { |
7477 | dev_err(&pdev->dev, | |
7478 | "igb: Cannot enable PCI device from suspend\n"); | |
7479 | return err; | |
7480 | } | |
7481 | pci_set_master(pdev); | |
7482 | ||
7483 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
7484 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
7485 | ||
53c7d064 | 7486 | if (igb_init_interrupt_scheme(adapter, true)) { |
a88f10ec AD |
7487 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); |
7488 | return -ENOMEM; | |
9d5c8243 AK |
7489 | } |
7490 | ||
9d5c8243 | 7491 | igb_reset(adapter); |
a8564f03 AD |
7492 | |
7493 | /* let the f/w know that the h/w is now under the control of the | |
b980ac18 JK |
7494 | * driver. |
7495 | */ | |
a8564f03 AD |
7496 | igb_get_hw_control(adapter); |
7497 | ||
9d5c8243 AK |
7498 | wr32(E1000_WUS, ~0); |
7499 | ||
749ab2cd | 7500 | if (netdev->flags & IFF_UP) { |
0c2cc02e | 7501 | rtnl_lock(); |
749ab2cd | 7502 | err = __igb_open(netdev, true); |
0c2cc02e | 7503 | rtnl_unlock(); |
a88f10ec AD |
7504 | if (err) |
7505 | return err; | |
7506 | } | |
9d5c8243 AK |
7507 | |
7508 | netif_device_attach(netdev); | |
749ab2cd YZ |
7509 | return 0; |
7510 | } | |
7511 | ||
7512 | #ifdef CONFIG_PM_RUNTIME | |
7513 | static int igb_runtime_idle(struct device *dev) | |
7514 | { | |
7515 | struct pci_dev *pdev = to_pci_dev(dev); | |
7516 | struct net_device *netdev = pci_get_drvdata(pdev); | |
7517 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7518 | ||
7519 | if (!igb_has_link(adapter)) | |
7520 | pm_schedule_suspend(dev, MSEC_PER_SEC * 5); | |
7521 | ||
7522 | return -EBUSY; | |
7523 | } | |
7524 | ||
7525 | static int igb_runtime_suspend(struct device *dev) | |
7526 | { | |
7527 | struct pci_dev *pdev = to_pci_dev(dev); | |
7528 | int retval; | |
7529 | bool wake; | |
7530 | ||
7531 | retval = __igb_shutdown(pdev, &wake, 1); | |
7532 | if (retval) | |
7533 | return retval; | |
7534 | ||
7535 | if (wake) { | |
7536 | pci_prepare_to_sleep(pdev); | |
7537 | } else { | |
7538 | pci_wake_from_d3(pdev, false); | |
7539 | pci_set_power_state(pdev, PCI_D3hot); | |
7540 | } | |
9d5c8243 | 7541 | |
9d5c8243 AK |
7542 | return 0; |
7543 | } | |
749ab2cd YZ |
7544 | |
7545 | static int igb_runtime_resume(struct device *dev) | |
7546 | { | |
7547 | return igb_resume(dev); | |
7548 | } | |
7549 | #endif /* CONFIG_PM_RUNTIME */ | |
9d5c8243 AK |
7550 | #endif |
7551 | ||
7552 | static void igb_shutdown(struct pci_dev *pdev) | |
7553 | { | |
3fe7c4c9 RW |
7554 | bool wake; |
7555 | ||
749ab2cd | 7556 | __igb_shutdown(pdev, &wake, 0); |
3fe7c4c9 RW |
7557 | |
7558 | if (system_state == SYSTEM_POWER_OFF) { | |
7559 | pci_wake_from_d3(pdev, wake); | |
7560 | pci_set_power_state(pdev, PCI_D3hot); | |
7561 | } | |
9d5c8243 AK |
7562 | } |
7563 | ||
fa44f2f1 GR |
7564 | #ifdef CONFIG_PCI_IOV |
7565 | static int igb_sriov_reinit(struct pci_dev *dev) | |
7566 | { | |
7567 | struct net_device *netdev = pci_get_drvdata(dev); | |
7568 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7569 | struct pci_dev *pdev = adapter->pdev; | |
7570 | ||
7571 | rtnl_lock(); | |
7572 | ||
7573 | if (netif_running(netdev)) | |
7574 | igb_close(netdev); | |
7575 | ||
7576 | igb_clear_interrupt_scheme(adapter); | |
7577 | ||
7578 | igb_init_queue_configuration(adapter); | |
7579 | ||
7580 | if (igb_init_interrupt_scheme(adapter, true)) { | |
7581 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); | |
7582 | return -ENOMEM; | |
7583 | } | |
7584 | ||
7585 | if (netif_running(netdev)) | |
7586 | igb_open(netdev); | |
7587 | ||
7588 | rtnl_unlock(); | |
7589 | ||
7590 | return 0; | |
7591 | } | |
7592 | ||
7593 | static int igb_pci_disable_sriov(struct pci_dev *dev) | |
7594 | { | |
7595 | int err = igb_disable_sriov(dev); | |
7596 | ||
7597 | if (!err) | |
7598 | err = igb_sriov_reinit(dev); | |
7599 | ||
7600 | return err; | |
7601 | } | |
7602 | ||
7603 | static int igb_pci_enable_sriov(struct pci_dev *dev, int num_vfs) | |
7604 | { | |
7605 | int err = igb_enable_sriov(dev, num_vfs); | |
7606 | ||
7607 | if (err) | |
7608 | goto out; | |
7609 | ||
7610 | err = igb_sriov_reinit(dev); | |
7611 | if (!err) | |
7612 | return num_vfs; | |
7613 | ||
7614 | out: | |
7615 | return err; | |
7616 | } | |
7617 | ||
7618 | #endif | |
7619 | static int igb_pci_sriov_configure(struct pci_dev *dev, int num_vfs) | |
7620 | { | |
7621 | #ifdef CONFIG_PCI_IOV | |
7622 | if (num_vfs == 0) | |
7623 | return igb_pci_disable_sriov(dev); | |
7624 | else | |
7625 | return igb_pci_enable_sriov(dev, num_vfs); | |
7626 | #endif | |
7627 | return 0; | |
7628 | } | |
7629 | ||
9d5c8243 | 7630 | #ifdef CONFIG_NET_POLL_CONTROLLER |
b980ac18 | 7631 | /* Polling 'interrupt' - used by things like netconsole to send skbs |
9d5c8243 AK |
7632 | * without having to re-enable interrupts. It's not called while |
7633 | * the interrupt routine is executing. | |
7634 | */ | |
7635 | static void igb_netpoll(struct net_device *netdev) | |
7636 | { | |
7637 | struct igb_adapter *adapter = netdev_priv(netdev); | |
eebbbdba | 7638 | struct e1000_hw *hw = &adapter->hw; |
0d1ae7f4 | 7639 | struct igb_q_vector *q_vector; |
9d5c8243 | 7640 | int i; |
9d5c8243 | 7641 | |
047e0030 | 7642 | for (i = 0; i < adapter->num_q_vectors; i++) { |
0d1ae7f4 | 7643 | q_vector = adapter->q_vector[i]; |
cd14ef54 | 7644 | if (adapter->flags & IGB_FLAG_HAS_MSIX) |
0d1ae7f4 AD |
7645 | wr32(E1000_EIMC, q_vector->eims_value); |
7646 | else | |
7647 | igb_irq_disable(adapter); | |
047e0030 | 7648 | napi_schedule(&q_vector->napi); |
eebbbdba | 7649 | } |
9d5c8243 AK |
7650 | } |
7651 | #endif /* CONFIG_NET_POLL_CONTROLLER */ | |
7652 | ||
7653 | /** | |
b980ac18 JK |
7654 | * igb_io_error_detected - called when PCI error is detected |
7655 | * @pdev: Pointer to PCI device | |
7656 | * @state: The current pci connection state | |
9d5c8243 | 7657 | * |
b980ac18 JK |
7658 | * This function is called after a PCI bus error affecting |
7659 | * this device has been detected. | |
7660 | **/ | |
9d5c8243 AK |
7661 | static pci_ers_result_t igb_io_error_detected(struct pci_dev *pdev, |
7662 | pci_channel_state_t state) | |
7663 | { | |
7664 | struct net_device *netdev = pci_get_drvdata(pdev); | |
7665 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7666 | ||
7667 | netif_device_detach(netdev); | |
7668 | ||
59ed6eec AD |
7669 | if (state == pci_channel_io_perm_failure) |
7670 | return PCI_ERS_RESULT_DISCONNECT; | |
7671 | ||
9d5c8243 AK |
7672 | if (netif_running(netdev)) |
7673 | igb_down(adapter); | |
7674 | pci_disable_device(pdev); | |
7675 | ||
7676 | /* Request a slot slot reset. */ | |
7677 | return PCI_ERS_RESULT_NEED_RESET; | |
7678 | } | |
7679 | ||
7680 | /** | |
b980ac18 JK |
7681 | * igb_io_slot_reset - called after the pci bus has been reset. |
7682 | * @pdev: Pointer to PCI device | |
9d5c8243 | 7683 | * |
b980ac18 JK |
7684 | * Restart the card from scratch, as if from a cold-boot. Implementation |
7685 | * resembles the first-half of the igb_resume routine. | |
7686 | **/ | |
9d5c8243 AK |
7687 | static pci_ers_result_t igb_io_slot_reset(struct pci_dev *pdev) |
7688 | { | |
7689 | struct net_device *netdev = pci_get_drvdata(pdev); | |
7690 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7691 | struct e1000_hw *hw = &adapter->hw; | |
40a914fa | 7692 | pci_ers_result_t result; |
42bfd33a | 7693 | int err; |
9d5c8243 | 7694 | |
aed5dec3 | 7695 | if (pci_enable_device_mem(pdev)) { |
9d5c8243 AK |
7696 | dev_err(&pdev->dev, |
7697 | "Cannot re-enable PCI device after reset.\n"); | |
40a914fa AD |
7698 | result = PCI_ERS_RESULT_DISCONNECT; |
7699 | } else { | |
7700 | pci_set_master(pdev); | |
7701 | pci_restore_state(pdev); | |
b94f2d77 | 7702 | pci_save_state(pdev); |
9d5c8243 | 7703 | |
40a914fa AD |
7704 | pci_enable_wake(pdev, PCI_D3hot, 0); |
7705 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
9d5c8243 | 7706 | |
40a914fa AD |
7707 | igb_reset(adapter); |
7708 | wr32(E1000_WUS, ~0); | |
7709 | result = PCI_ERS_RESULT_RECOVERED; | |
7710 | } | |
9d5c8243 | 7711 | |
ea943d41 JK |
7712 | err = pci_cleanup_aer_uncorrect_error_status(pdev); |
7713 | if (err) { | |
b980ac18 JK |
7714 | dev_err(&pdev->dev, |
7715 | "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n", | |
7716 | err); | |
ea943d41 JK |
7717 | /* non-fatal, continue */ |
7718 | } | |
40a914fa AD |
7719 | |
7720 | return result; | |
9d5c8243 AK |
7721 | } |
7722 | ||
7723 | /** | |
b980ac18 JK |
7724 | * igb_io_resume - called when traffic can start flowing again. |
7725 | * @pdev: Pointer to PCI device | |
9d5c8243 | 7726 | * |
b980ac18 JK |
7727 | * This callback is called when the error recovery driver tells us that |
7728 | * its OK to resume normal operation. Implementation resembles the | |
7729 | * second-half of the igb_resume routine. | |
9d5c8243 AK |
7730 | */ |
7731 | static void igb_io_resume(struct pci_dev *pdev) | |
7732 | { | |
7733 | struct net_device *netdev = pci_get_drvdata(pdev); | |
7734 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7735 | ||
9d5c8243 AK |
7736 | if (netif_running(netdev)) { |
7737 | if (igb_up(adapter)) { | |
7738 | dev_err(&pdev->dev, "igb_up failed after reset\n"); | |
7739 | return; | |
7740 | } | |
7741 | } | |
7742 | ||
7743 | netif_device_attach(netdev); | |
7744 | ||
7745 | /* let the f/w know that the h/w is now under the control of the | |
b980ac18 JK |
7746 | * driver. |
7747 | */ | |
9d5c8243 | 7748 | igb_get_hw_control(adapter); |
9d5c8243 AK |
7749 | } |
7750 | ||
26ad9178 | 7751 | static void igb_rar_set_qsel(struct igb_adapter *adapter, u8 *addr, u32 index, |
b980ac18 | 7752 | u8 qsel) |
26ad9178 AD |
7753 | { |
7754 | u32 rar_low, rar_high; | |
7755 | struct e1000_hw *hw = &adapter->hw; | |
7756 | ||
7757 | /* HW expects these in little endian so we reverse the byte order | |
7758 | * from network order (big endian) to little endian | |
7759 | */ | |
7760 | rar_low = ((u32) addr[0] | ((u32) addr[1] << 8) | | |
b980ac18 | 7761 | ((u32) addr[2] << 16) | ((u32) addr[3] << 24)); |
26ad9178 AD |
7762 | rar_high = ((u32) addr[4] | ((u32) addr[5] << 8)); |
7763 | ||
7764 | /* Indicate to hardware the Address is Valid. */ | |
7765 | rar_high |= E1000_RAH_AV; | |
7766 | ||
7767 | if (hw->mac.type == e1000_82575) | |
7768 | rar_high |= E1000_RAH_POOL_1 * qsel; | |
7769 | else | |
7770 | rar_high |= E1000_RAH_POOL_1 << qsel; | |
7771 | ||
7772 | wr32(E1000_RAL(index), rar_low); | |
7773 | wrfl(); | |
7774 | wr32(E1000_RAH(index), rar_high); | |
7775 | wrfl(); | |
7776 | } | |
7777 | ||
4ae196df | 7778 | static int igb_set_vf_mac(struct igb_adapter *adapter, |
b980ac18 | 7779 | int vf, unsigned char *mac_addr) |
4ae196df AD |
7780 | { |
7781 | struct e1000_hw *hw = &adapter->hw; | |
ff41f8dc | 7782 | /* VF MAC addresses start at end of receive addresses and moves |
b980ac18 JK |
7783 | * towards the first, as a result a collision should not be possible |
7784 | */ | |
ff41f8dc | 7785 | int rar_entry = hw->mac.rar_entry_count - (vf + 1); |
4ae196df | 7786 | |
37680117 | 7787 | memcpy(adapter->vf_data[vf].vf_mac_addresses, mac_addr, ETH_ALEN); |
4ae196df | 7788 | |
26ad9178 | 7789 | igb_rar_set_qsel(adapter, mac_addr, rar_entry, vf); |
4ae196df AD |
7790 | |
7791 | return 0; | |
7792 | } | |
7793 | ||
8151d294 WM |
7794 | static int igb_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) |
7795 | { | |
7796 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7797 | if (!is_valid_ether_addr(mac) || (vf >= adapter->vfs_allocated_count)) | |
7798 | return -EINVAL; | |
7799 | adapter->vf_data[vf].flags |= IGB_VF_FLAG_PF_SET_MAC; | |
7800 | dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf); | |
b980ac18 JK |
7801 | dev_info(&adapter->pdev->dev, |
7802 | "Reload the VF driver to make this change effective."); | |
8151d294 | 7803 | if (test_bit(__IGB_DOWN, &adapter->state)) { |
b980ac18 JK |
7804 | dev_warn(&adapter->pdev->dev, |
7805 | "The VF MAC address has been set, but the PF device is not up.\n"); | |
7806 | dev_warn(&adapter->pdev->dev, | |
7807 | "Bring the PF device up before attempting to use the VF device.\n"); | |
8151d294 WM |
7808 | } |
7809 | return igb_set_vf_mac(adapter, vf, mac); | |
7810 | } | |
7811 | ||
17dc566c LL |
7812 | static int igb_link_mbps(int internal_link_speed) |
7813 | { | |
7814 | switch (internal_link_speed) { | |
7815 | case SPEED_100: | |
7816 | return 100; | |
7817 | case SPEED_1000: | |
7818 | return 1000; | |
7819 | default: | |
7820 | return 0; | |
7821 | } | |
7822 | } | |
7823 | ||
7824 | static void igb_set_vf_rate_limit(struct e1000_hw *hw, int vf, int tx_rate, | |
7825 | int link_speed) | |
7826 | { | |
7827 | int rf_dec, rf_int; | |
7828 | u32 bcnrc_val; | |
7829 | ||
7830 | if (tx_rate != 0) { | |
7831 | /* Calculate the rate factor values to set */ | |
7832 | rf_int = link_speed / tx_rate; | |
7833 | rf_dec = (link_speed - (rf_int * tx_rate)); | |
b980ac18 JK |
7834 | rf_dec = (rf_dec * (1 << E1000_RTTBCNRC_RF_INT_SHIFT)) / |
7835 | tx_rate; | |
17dc566c LL |
7836 | |
7837 | bcnrc_val = E1000_RTTBCNRC_RS_ENA; | |
b980ac18 JK |
7838 | bcnrc_val |= ((rf_int << E1000_RTTBCNRC_RF_INT_SHIFT) & |
7839 | E1000_RTTBCNRC_RF_INT_MASK); | |
17dc566c LL |
7840 | bcnrc_val |= (rf_dec & E1000_RTTBCNRC_RF_DEC_MASK); |
7841 | } else { | |
7842 | bcnrc_val = 0; | |
7843 | } | |
7844 | ||
7845 | wr32(E1000_RTTDQSEL, vf); /* vf X uses queue X */ | |
b980ac18 | 7846 | /* Set global transmit compensation time to the MMW_SIZE in RTTBCNRM |
f00b0da7 LL |
7847 | * register. MMW_SIZE=0x014 if 9728-byte jumbo is supported. |
7848 | */ | |
7849 | wr32(E1000_RTTBCNRM, 0x14); | |
17dc566c LL |
7850 | wr32(E1000_RTTBCNRC, bcnrc_val); |
7851 | } | |
7852 | ||
7853 | static void igb_check_vf_rate_limit(struct igb_adapter *adapter) | |
7854 | { | |
7855 | int actual_link_speed, i; | |
7856 | bool reset_rate = false; | |
7857 | ||
7858 | /* VF TX rate limit was not set or not supported */ | |
7859 | if ((adapter->vf_rate_link_speed == 0) || | |
7860 | (adapter->hw.mac.type != e1000_82576)) | |
7861 | return; | |
7862 | ||
7863 | actual_link_speed = igb_link_mbps(adapter->link_speed); | |
7864 | if (actual_link_speed != adapter->vf_rate_link_speed) { | |
7865 | reset_rate = true; | |
7866 | adapter->vf_rate_link_speed = 0; | |
7867 | dev_info(&adapter->pdev->dev, | |
b980ac18 | 7868 | "Link speed has been changed. VF Transmit rate is disabled\n"); |
17dc566c LL |
7869 | } |
7870 | ||
7871 | for (i = 0; i < adapter->vfs_allocated_count; i++) { | |
7872 | if (reset_rate) | |
7873 | adapter->vf_data[i].tx_rate = 0; | |
7874 | ||
7875 | igb_set_vf_rate_limit(&adapter->hw, i, | |
b980ac18 JK |
7876 | adapter->vf_data[i].tx_rate, |
7877 | actual_link_speed); | |
17dc566c LL |
7878 | } |
7879 | } | |
7880 | ||
ed616689 SC |
7881 | static int igb_ndo_set_vf_bw(struct net_device *netdev, int vf, |
7882 | int min_tx_rate, int max_tx_rate) | |
8151d294 | 7883 | { |
17dc566c LL |
7884 | struct igb_adapter *adapter = netdev_priv(netdev); |
7885 | struct e1000_hw *hw = &adapter->hw; | |
7886 | int actual_link_speed; | |
7887 | ||
7888 | if (hw->mac.type != e1000_82576) | |
7889 | return -EOPNOTSUPP; | |
7890 | ||
ed616689 SC |
7891 | if (min_tx_rate) |
7892 | return -EINVAL; | |
7893 | ||
17dc566c LL |
7894 | actual_link_speed = igb_link_mbps(adapter->link_speed); |
7895 | if ((vf >= adapter->vfs_allocated_count) || | |
7896 | (!(rd32(E1000_STATUS) & E1000_STATUS_LU)) || | |
ed616689 SC |
7897 | (max_tx_rate < 0) || |
7898 | (max_tx_rate > actual_link_speed)) | |
17dc566c LL |
7899 | return -EINVAL; |
7900 | ||
7901 | adapter->vf_rate_link_speed = actual_link_speed; | |
ed616689 SC |
7902 | adapter->vf_data[vf].tx_rate = (u16)max_tx_rate; |
7903 | igb_set_vf_rate_limit(hw, vf, max_tx_rate, actual_link_speed); | |
17dc566c LL |
7904 | |
7905 | return 0; | |
8151d294 WM |
7906 | } |
7907 | ||
70ea4783 LL |
7908 | static int igb_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, |
7909 | bool setting) | |
7910 | { | |
7911 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7912 | struct e1000_hw *hw = &adapter->hw; | |
7913 | u32 reg_val, reg_offset; | |
7914 | ||
7915 | if (!adapter->vfs_allocated_count) | |
7916 | return -EOPNOTSUPP; | |
7917 | ||
7918 | if (vf >= adapter->vfs_allocated_count) | |
7919 | return -EINVAL; | |
7920 | ||
7921 | reg_offset = (hw->mac.type == e1000_82576) ? E1000_DTXSWC : E1000_TXSWC; | |
7922 | reg_val = rd32(reg_offset); | |
7923 | if (setting) | |
7924 | reg_val |= ((1 << vf) | | |
7925 | (1 << (vf + E1000_DTXSWC_VLAN_SPOOF_SHIFT))); | |
7926 | else | |
7927 | reg_val &= ~((1 << vf) | | |
7928 | (1 << (vf + E1000_DTXSWC_VLAN_SPOOF_SHIFT))); | |
7929 | wr32(reg_offset, reg_val); | |
7930 | ||
7931 | adapter->vf_data[vf].spoofchk_enabled = setting; | |
7932 | return E1000_SUCCESS; | |
7933 | } | |
7934 | ||
8151d294 WM |
7935 | static int igb_ndo_get_vf_config(struct net_device *netdev, |
7936 | int vf, struct ifla_vf_info *ivi) | |
7937 | { | |
7938 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7939 | if (vf >= adapter->vfs_allocated_count) | |
7940 | return -EINVAL; | |
7941 | ivi->vf = vf; | |
7942 | memcpy(&ivi->mac, adapter->vf_data[vf].vf_mac_addresses, ETH_ALEN); | |
ed616689 SC |
7943 | ivi->max_tx_rate = adapter->vf_data[vf].tx_rate; |
7944 | ivi->min_tx_rate = 0; | |
8151d294 WM |
7945 | ivi->vlan = adapter->vf_data[vf].pf_vlan; |
7946 | ivi->qos = adapter->vf_data[vf].pf_qos; | |
70ea4783 | 7947 | ivi->spoofchk = adapter->vf_data[vf].spoofchk_enabled; |
8151d294 WM |
7948 | return 0; |
7949 | } | |
7950 | ||
4ae196df AD |
7951 | static void igb_vmm_control(struct igb_adapter *adapter) |
7952 | { | |
7953 | struct e1000_hw *hw = &adapter->hw; | |
10d8e907 | 7954 | u32 reg; |
4ae196df | 7955 | |
52a1dd4d AD |
7956 | switch (hw->mac.type) { |
7957 | case e1000_82575: | |
f96a8a0b CW |
7958 | case e1000_i210: |
7959 | case e1000_i211: | |
ceb5f13b | 7960 | case e1000_i354: |
52a1dd4d AD |
7961 | default: |
7962 | /* replication is not supported for 82575 */ | |
4ae196df | 7963 | return; |
52a1dd4d AD |
7964 | case e1000_82576: |
7965 | /* notify HW that the MAC is adding vlan tags */ | |
7966 | reg = rd32(E1000_DTXCTL); | |
7967 | reg |= E1000_DTXCTL_VLAN_ADDED; | |
7968 | wr32(E1000_DTXCTL, reg); | |
b26141d4 | 7969 | /* Fall through */ |
52a1dd4d AD |
7970 | case e1000_82580: |
7971 | /* enable replication vlan tag stripping */ | |
7972 | reg = rd32(E1000_RPLOLR); | |
7973 | reg |= E1000_RPLOLR_STRVLAN; | |
7974 | wr32(E1000_RPLOLR, reg); | |
b26141d4 | 7975 | /* Fall through */ |
d2ba2ed8 AD |
7976 | case e1000_i350: |
7977 | /* none of the above registers are supported by i350 */ | |
52a1dd4d AD |
7978 | break; |
7979 | } | |
10d8e907 | 7980 | |
d4960307 AD |
7981 | if (adapter->vfs_allocated_count) { |
7982 | igb_vmdq_set_loopback_pf(hw, true); | |
7983 | igb_vmdq_set_replication_pf(hw, true); | |
13800469 | 7984 | igb_vmdq_set_anti_spoofing_pf(hw, true, |
b980ac18 | 7985 | adapter->vfs_allocated_count); |
d4960307 AD |
7986 | } else { |
7987 | igb_vmdq_set_loopback_pf(hw, false); | |
7988 | igb_vmdq_set_replication_pf(hw, false); | |
7989 | } | |
4ae196df AD |
7990 | } |
7991 | ||
b6e0c419 CW |
7992 | static void igb_init_dmac(struct igb_adapter *adapter, u32 pba) |
7993 | { | |
7994 | struct e1000_hw *hw = &adapter->hw; | |
7995 | u32 dmac_thr; | |
7996 | u16 hwm; | |
7997 | ||
7998 | if (hw->mac.type > e1000_82580) { | |
7999 | if (adapter->flags & IGB_FLAG_DMAC) { | |
8000 | u32 reg; | |
8001 | ||
8002 | /* force threshold to 0. */ | |
8003 | wr32(E1000_DMCTXTH, 0); | |
8004 | ||
b980ac18 | 8005 | /* DMA Coalescing high water mark needs to be greater |
e8c626e9 MV |
8006 | * than the Rx threshold. Set hwm to PBA - max frame |
8007 | * size in 16B units, capping it at PBA - 6KB. | |
b6e0c419 | 8008 | */ |
e8c626e9 MV |
8009 | hwm = 64 * pba - adapter->max_frame_size / 16; |
8010 | if (hwm < 64 * (pba - 6)) | |
8011 | hwm = 64 * (pba - 6); | |
8012 | reg = rd32(E1000_FCRTC); | |
8013 | reg &= ~E1000_FCRTC_RTH_COAL_MASK; | |
8014 | reg |= ((hwm << E1000_FCRTC_RTH_COAL_SHIFT) | |
8015 | & E1000_FCRTC_RTH_COAL_MASK); | |
8016 | wr32(E1000_FCRTC, reg); | |
8017 | ||
b980ac18 | 8018 | /* Set the DMA Coalescing Rx threshold to PBA - 2 * max |
e8c626e9 MV |
8019 | * frame size, capping it at PBA - 10KB. |
8020 | */ | |
8021 | dmac_thr = pba - adapter->max_frame_size / 512; | |
8022 | if (dmac_thr < pba - 10) | |
8023 | dmac_thr = pba - 10; | |
b6e0c419 CW |
8024 | reg = rd32(E1000_DMACR); |
8025 | reg &= ~E1000_DMACR_DMACTHR_MASK; | |
b6e0c419 CW |
8026 | reg |= ((dmac_thr << E1000_DMACR_DMACTHR_SHIFT) |
8027 | & E1000_DMACR_DMACTHR_MASK); | |
8028 | ||
8029 | /* transition to L0x or L1 if available..*/ | |
8030 | reg |= (E1000_DMACR_DMAC_EN | E1000_DMACR_DMAC_LX_MASK); | |
8031 | ||
8032 | /* watchdog timer= +-1000 usec in 32usec intervals */ | |
8033 | reg |= (1000 >> 5); | |
0c02dd98 MV |
8034 | |
8035 | /* Disable BMC-to-OS Watchdog Enable */ | |
ceb5f13b CW |
8036 | if (hw->mac.type != e1000_i354) |
8037 | reg &= ~E1000_DMACR_DC_BMC2OSW_EN; | |
8038 | ||
b6e0c419 CW |
8039 | wr32(E1000_DMACR, reg); |
8040 | ||
b980ac18 | 8041 | /* no lower threshold to disable |
b6e0c419 CW |
8042 | * coalescing(smart fifb)-UTRESH=0 |
8043 | */ | |
8044 | wr32(E1000_DMCRTRH, 0); | |
b6e0c419 CW |
8045 | |
8046 | reg = (IGB_DMCTLX_DCFLUSH_DIS | 0x4); | |
8047 | ||
8048 | wr32(E1000_DMCTLX, reg); | |
8049 | ||
b980ac18 | 8050 | /* free space in tx packet buffer to wake from |
b6e0c419 CW |
8051 | * DMA coal |
8052 | */ | |
8053 | wr32(E1000_DMCTXTH, (IGB_MIN_TXPBSIZE - | |
8054 | (IGB_TX_BUF_4096 + adapter->max_frame_size)) >> 6); | |
8055 | ||
b980ac18 | 8056 | /* make low power state decision controlled |
b6e0c419 CW |
8057 | * by DMA coal |
8058 | */ | |
8059 | reg = rd32(E1000_PCIEMISC); | |
8060 | reg &= ~E1000_PCIEMISC_LX_DECISION; | |
8061 | wr32(E1000_PCIEMISC, reg); | |
8062 | } /* endif adapter->dmac is not disabled */ | |
8063 | } else if (hw->mac.type == e1000_82580) { | |
8064 | u32 reg = rd32(E1000_PCIEMISC); | |
9005df38 | 8065 | |
b6e0c419 CW |
8066 | wr32(E1000_PCIEMISC, reg & ~E1000_PCIEMISC_LX_DECISION); |
8067 | wr32(E1000_DMACR, 0); | |
8068 | } | |
8069 | } | |
8070 | ||
b980ac18 JK |
8071 | /** |
8072 | * igb_read_i2c_byte - Reads 8 bit word over I2C | |
441fc6fd CW |
8073 | * @hw: pointer to hardware structure |
8074 | * @byte_offset: byte offset to read | |
8075 | * @dev_addr: device address | |
8076 | * @data: value read | |
8077 | * | |
8078 | * Performs byte read operation over I2C interface at | |
8079 | * a specified device address. | |
b980ac18 | 8080 | **/ |
441fc6fd | 8081 | s32 igb_read_i2c_byte(struct e1000_hw *hw, u8 byte_offset, |
b980ac18 | 8082 | u8 dev_addr, u8 *data) |
441fc6fd CW |
8083 | { |
8084 | struct igb_adapter *adapter = container_of(hw, struct igb_adapter, hw); | |
603e86fa | 8085 | struct i2c_client *this_client = adapter->i2c_client; |
441fc6fd CW |
8086 | s32 status; |
8087 | u16 swfw_mask = 0; | |
8088 | ||
8089 | if (!this_client) | |
8090 | return E1000_ERR_I2C; | |
8091 | ||
8092 | swfw_mask = E1000_SWFW_PHY0_SM; | |
8093 | ||
8094 | if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask) | |
8095 | != E1000_SUCCESS) | |
8096 | return E1000_ERR_SWFW_SYNC; | |
8097 | ||
8098 | status = i2c_smbus_read_byte_data(this_client, byte_offset); | |
8099 | hw->mac.ops.release_swfw_sync(hw, swfw_mask); | |
8100 | ||
8101 | if (status < 0) | |
8102 | return E1000_ERR_I2C; | |
8103 | else { | |
8104 | *data = status; | |
8105 | return E1000_SUCCESS; | |
8106 | } | |
8107 | } | |
8108 | ||
b980ac18 JK |
8109 | /** |
8110 | * igb_write_i2c_byte - Writes 8 bit word over I2C | |
441fc6fd CW |
8111 | * @hw: pointer to hardware structure |
8112 | * @byte_offset: byte offset to write | |
8113 | * @dev_addr: device address | |
8114 | * @data: value to write | |
8115 | * | |
8116 | * Performs byte write operation over I2C interface at | |
8117 | * a specified device address. | |
b980ac18 | 8118 | **/ |
441fc6fd | 8119 | s32 igb_write_i2c_byte(struct e1000_hw *hw, u8 byte_offset, |
b980ac18 | 8120 | u8 dev_addr, u8 data) |
441fc6fd CW |
8121 | { |
8122 | struct igb_adapter *adapter = container_of(hw, struct igb_adapter, hw); | |
603e86fa | 8123 | struct i2c_client *this_client = adapter->i2c_client; |
441fc6fd CW |
8124 | s32 status; |
8125 | u16 swfw_mask = E1000_SWFW_PHY0_SM; | |
8126 | ||
8127 | if (!this_client) | |
8128 | return E1000_ERR_I2C; | |
8129 | ||
8130 | if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask) != E1000_SUCCESS) | |
8131 | return E1000_ERR_SWFW_SYNC; | |
8132 | status = i2c_smbus_write_byte_data(this_client, byte_offset, data); | |
8133 | hw->mac.ops.release_swfw_sync(hw, swfw_mask); | |
8134 | ||
8135 | if (status) | |
8136 | return E1000_ERR_I2C; | |
8137 | else | |
8138 | return E1000_SUCCESS; | |
8139 | ||
8140 | } | |
907b7835 LMV |
8141 | |
8142 | int igb_reinit_queues(struct igb_adapter *adapter) | |
8143 | { | |
8144 | struct net_device *netdev = adapter->netdev; | |
8145 | struct pci_dev *pdev = adapter->pdev; | |
8146 | int err = 0; | |
8147 | ||
8148 | if (netif_running(netdev)) | |
8149 | igb_close(netdev); | |
8150 | ||
02ef6e1d | 8151 | igb_reset_interrupt_capability(adapter); |
907b7835 LMV |
8152 | |
8153 | if (igb_init_interrupt_scheme(adapter, true)) { | |
8154 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); | |
8155 | return -ENOMEM; | |
8156 | } | |
8157 | ||
8158 | if (netif_running(netdev)) | |
8159 | err = igb_open(netdev); | |
8160 | ||
8161 | return err; | |
8162 | } | |
9d5c8243 | 8163 | /* igb_main.c */ |