Commit | Line | Data |
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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); | |
172 | static int igb_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate); | |
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, | |
2087 | .ndo_set_vf_tx_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 | return; |
2143 | } | |
2144 | ||
56cec249 CW |
2145 | /** |
2146 | * igb_init_mas - init Media Autosense feature if enabled in the NVM | |
2147 | * | |
2148 | * @adapter: adapter struct | |
2149 | **/ | |
2150 | static void igb_init_mas(struct igb_adapter *adapter) | |
2151 | { | |
2152 | struct e1000_hw *hw = &adapter->hw; | |
2153 | u16 eeprom_data; | |
2154 | ||
2155 | hw->nvm.ops.read(hw, NVM_COMPAT, 1, &eeprom_data); | |
2156 | switch (hw->bus.func) { | |
2157 | case E1000_FUNC_0: | |
2158 | if (eeprom_data & IGB_MAS_ENABLE_0) { | |
2159 | adapter->flags |= IGB_FLAG_MAS_ENABLE; | |
2160 | netdev_info(adapter->netdev, | |
2161 | "MAS: Enabling Media Autosense for port %d\n", | |
2162 | hw->bus.func); | |
2163 | } | |
2164 | break; | |
2165 | case E1000_FUNC_1: | |
2166 | if (eeprom_data & IGB_MAS_ENABLE_1) { | |
2167 | adapter->flags |= IGB_FLAG_MAS_ENABLE; | |
2168 | netdev_info(adapter->netdev, | |
2169 | "MAS: Enabling Media Autosense for port %d\n", | |
2170 | hw->bus.func); | |
2171 | } | |
2172 | break; | |
2173 | case E1000_FUNC_2: | |
2174 | if (eeprom_data & IGB_MAS_ENABLE_2) { | |
2175 | adapter->flags |= IGB_FLAG_MAS_ENABLE; | |
2176 | netdev_info(adapter->netdev, | |
2177 | "MAS: Enabling Media Autosense for port %d\n", | |
2178 | hw->bus.func); | |
2179 | } | |
2180 | break; | |
2181 | case E1000_FUNC_3: | |
2182 | if (eeprom_data & IGB_MAS_ENABLE_3) { | |
2183 | adapter->flags |= IGB_FLAG_MAS_ENABLE; | |
2184 | netdev_info(adapter->netdev, | |
2185 | "MAS: Enabling Media Autosense for port %d\n", | |
2186 | hw->bus.func); | |
2187 | } | |
2188 | break; | |
2189 | default: | |
2190 | /* Shouldn't get here */ | |
2191 | netdev_err(adapter->netdev, | |
2192 | "MAS: Invalid port configuration, returning\n"); | |
2193 | break; | |
2194 | } | |
2195 | } | |
2196 | ||
b980ac18 JK |
2197 | /** |
2198 | * igb_init_i2c - Init I2C interface | |
441fc6fd | 2199 | * @adapter: pointer to adapter structure |
b980ac18 | 2200 | **/ |
441fc6fd CW |
2201 | static s32 igb_init_i2c(struct igb_adapter *adapter) |
2202 | { | |
2203 | s32 status = E1000_SUCCESS; | |
2204 | ||
2205 | /* I2C interface supported on i350 devices */ | |
2206 | if (adapter->hw.mac.type != e1000_i350) | |
2207 | return E1000_SUCCESS; | |
2208 | ||
2209 | /* Initialize the i2c bus which is controlled by the registers. | |
2210 | * This bus will use the i2c_algo_bit structue that implements | |
2211 | * the protocol through toggling of the 4 bits in the register. | |
2212 | */ | |
2213 | adapter->i2c_adap.owner = THIS_MODULE; | |
2214 | adapter->i2c_algo = igb_i2c_algo; | |
2215 | adapter->i2c_algo.data = adapter; | |
2216 | adapter->i2c_adap.algo_data = &adapter->i2c_algo; | |
2217 | adapter->i2c_adap.dev.parent = &adapter->pdev->dev; | |
2218 | strlcpy(adapter->i2c_adap.name, "igb BB", | |
2219 | sizeof(adapter->i2c_adap.name)); | |
2220 | status = i2c_bit_add_bus(&adapter->i2c_adap); | |
2221 | return status; | |
2222 | } | |
2223 | ||
9d5c8243 | 2224 | /** |
b980ac18 JK |
2225 | * igb_probe - Device Initialization Routine |
2226 | * @pdev: PCI device information struct | |
2227 | * @ent: entry in igb_pci_tbl | |
9d5c8243 | 2228 | * |
b980ac18 | 2229 | * Returns 0 on success, negative on failure |
9d5c8243 | 2230 | * |
b980ac18 JK |
2231 | * igb_probe initializes an adapter identified by a pci_dev structure. |
2232 | * The OS initialization, configuring of the adapter private structure, | |
2233 | * and a hardware reset occur. | |
9d5c8243 | 2234 | **/ |
1dd06ae8 | 2235 | static int igb_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
9d5c8243 AK |
2236 | { |
2237 | struct net_device *netdev; | |
2238 | struct igb_adapter *adapter; | |
2239 | struct e1000_hw *hw; | |
4337e993 | 2240 | u16 eeprom_data = 0; |
9835fd73 | 2241 | s32 ret_val; |
4337e993 | 2242 | static int global_quad_port_a; /* global quad port a indication */ |
9d5c8243 | 2243 | const struct e1000_info *ei = igb_info_tbl[ent->driver_data]; |
2d6a5e95 | 2244 | int err, pci_using_dac; |
9835fd73 | 2245 | u8 part_str[E1000_PBANUM_LENGTH]; |
9d5c8243 | 2246 | |
bded64a7 AG |
2247 | /* Catch broken hardware that put the wrong VF device ID in |
2248 | * the PCIe SR-IOV capability. | |
2249 | */ | |
2250 | if (pdev->is_virtfn) { | |
2251 | WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n", | |
f96a8a0b | 2252 | pci_name(pdev), pdev->vendor, pdev->device); |
bded64a7 AG |
2253 | return -EINVAL; |
2254 | } | |
2255 | ||
aed5dec3 | 2256 | err = pci_enable_device_mem(pdev); |
9d5c8243 AK |
2257 | if (err) |
2258 | return err; | |
2259 | ||
2260 | pci_using_dac = 0; | |
dc4ff9bb | 2261 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); |
9d5c8243 | 2262 | if (!err) { |
dc4ff9bb | 2263 | pci_using_dac = 1; |
9d5c8243 | 2264 | } else { |
dc4ff9bb | 2265 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
9d5c8243 | 2266 | if (err) { |
dc4ff9bb RK |
2267 | dev_err(&pdev->dev, |
2268 | "No usable DMA configuration, aborting\n"); | |
2269 | goto err_dma; | |
9d5c8243 AK |
2270 | } |
2271 | } | |
2272 | ||
aed5dec3 | 2273 | err = pci_request_selected_regions(pdev, pci_select_bars(pdev, |
b980ac18 JK |
2274 | IORESOURCE_MEM), |
2275 | igb_driver_name); | |
9d5c8243 AK |
2276 | if (err) |
2277 | goto err_pci_reg; | |
2278 | ||
19d5afd4 | 2279 | pci_enable_pcie_error_reporting(pdev); |
40a914fa | 2280 | |
9d5c8243 | 2281 | pci_set_master(pdev); |
c682fc23 | 2282 | pci_save_state(pdev); |
9d5c8243 AK |
2283 | |
2284 | err = -ENOMEM; | |
1bfaf07b | 2285 | netdev = alloc_etherdev_mq(sizeof(struct igb_adapter), |
1cc3bd87 | 2286 | IGB_MAX_TX_QUEUES); |
9d5c8243 AK |
2287 | if (!netdev) |
2288 | goto err_alloc_etherdev; | |
2289 | ||
2290 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2291 | ||
2292 | pci_set_drvdata(pdev, netdev); | |
2293 | adapter = netdev_priv(netdev); | |
2294 | adapter->netdev = netdev; | |
2295 | adapter->pdev = pdev; | |
2296 | hw = &adapter->hw; | |
2297 | hw->back = adapter; | |
b3f4d599 | 2298 | adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); |
9d5c8243 | 2299 | |
9d5c8243 | 2300 | err = -EIO; |
89dbefb2 | 2301 | hw->hw_addr = pci_iomap(pdev, 0, 0); |
28b0759c | 2302 | if (!hw->hw_addr) |
9d5c8243 AK |
2303 | goto err_ioremap; |
2304 | ||
2e5c6922 | 2305 | netdev->netdev_ops = &igb_netdev_ops; |
9d5c8243 | 2306 | igb_set_ethtool_ops(netdev); |
9d5c8243 | 2307 | netdev->watchdog_timeo = 5 * HZ; |
9d5c8243 AK |
2308 | |
2309 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); | |
2310 | ||
89dbefb2 AS |
2311 | netdev->mem_start = pci_resource_start(pdev, 0); |
2312 | netdev->mem_end = pci_resource_end(pdev, 0); | |
9d5c8243 | 2313 | |
9d5c8243 AK |
2314 | /* PCI config space info */ |
2315 | hw->vendor_id = pdev->vendor; | |
2316 | hw->device_id = pdev->device; | |
2317 | hw->revision_id = pdev->revision; | |
2318 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
2319 | hw->subsystem_device_id = pdev->subsystem_device; | |
2320 | ||
9d5c8243 AK |
2321 | /* Copy the default MAC, PHY and NVM function pointers */ |
2322 | memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); | |
2323 | memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); | |
2324 | memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); | |
2325 | /* Initialize skew-specific constants */ | |
2326 | err = ei->get_invariants(hw); | |
2327 | if (err) | |
450c87c8 | 2328 | goto err_sw_init; |
9d5c8243 | 2329 | |
450c87c8 | 2330 | /* setup the private structure */ |
9d5c8243 AK |
2331 | err = igb_sw_init(adapter); |
2332 | if (err) | |
2333 | goto err_sw_init; | |
2334 | ||
2335 | igb_get_bus_info_pcie(hw); | |
2336 | ||
2337 | hw->phy.autoneg_wait_to_complete = false; | |
9d5c8243 AK |
2338 | |
2339 | /* Copper options */ | |
2340 | if (hw->phy.media_type == e1000_media_type_copper) { | |
2341 | hw->phy.mdix = AUTO_ALL_MODES; | |
2342 | hw->phy.disable_polarity_correction = false; | |
2343 | hw->phy.ms_type = e1000_ms_hw_default; | |
2344 | } | |
2345 | ||
2346 | if (igb_check_reset_block(hw)) | |
2347 | dev_info(&pdev->dev, | |
2348 | "PHY reset is blocked due to SOL/IDER session.\n"); | |
2349 | ||
b980ac18 | 2350 | /* features is initialized to 0 in allocation, it might have bits |
077887c3 AD |
2351 | * set by igb_sw_init so we should use an or instead of an |
2352 | * assignment. | |
2353 | */ | |
2354 | netdev->features |= NETIF_F_SG | | |
2355 | NETIF_F_IP_CSUM | | |
2356 | NETIF_F_IPV6_CSUM | | |
2357 | NETIF_F_TSO | | |
2358 | NETIF_F_TSO6 | | |
2359 | NETIF_F_RXHASH | | |
2360 | NETIF_F_RXCSUM | | |
f646968f PM |
2361 | NETIF_F_HW_VLAN_CTAG_RX | |
2362 | NETIF_F_HW_VLAN_CTAG_TX; | |
077887c3 AD |
2363 | |
2364 | /* copy netdev features into list of user selectable features */ | |
2365 | netdev->hw_features |= netdev->features; | |
89eaefb6 | 2366 | netdev->hw_features |= NETIF_F_RXALL; |
077887c3 AD |
2367 | |
2368 | /* set this bit last since it cannot be part of hw_features */ | |
f646968f | 2369 | netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; |
077887c3 AD |
2370 | |
2371 | netdev->vlan_features |= NETIF_F_TSO | | |
2372 | NETIF_F_TSO6 | | |
2373 | NETIF_F_IP_CSUM | | |
2374 | NETIF_F_IPV6_CSUM | | |
2375 | NETIF_F_SG; | |
48f29ffc | 2376 | |
6b8f0922 BG |
2377 | netdev->priv_flags |= IFF_SUPP_NOFCS; |
2378 | ||
7b872a55 | 2379 | if (pci_using_dac) { |
9d5c8243 | 2380 | netdev->features |= NETIF_F_HIGHDMA; |
7b872a55 YZ |
2381 | netdev->vlan_features |= NETIF_F_HIGHDMA; |
2382 | } | |
9d5c8243 | 2383 | |
ac52caa3 MM |
2384 | if (hw->mac.type >= e1000_82576) { |
2385 | netdev->hw_features |= NETIF_F_SCTP_CSUM; | |
b9473560 | 2386 | netdev->features |= NETIF_F_SCTP_CSUM; |
ac52caa3 | 2387 | } |
b9473560 | 2388 | |
01789349 JP |
2389 | netdev->priv_flags |= IFF_UNICAST_FLT; |
2390 | ||
330a6d6a | 2391 | adapter->en_mng_pt = igb_enable_mng_pass_thru(hw); |
9d5c8243 AK |
2392 | |
2393 | /* before reading the NVM, reset the controller to put the device in a | |
b980ac18 JK |
2394 | * known good starting state |
2395 | */ | |
9d5c8243 AK |
2396 | hw->mac.ops.reset_hw(hw); |
2397 | ||
ef3a0092 CW |
2398 | /* make sure the NVM is good , i211/i210 parts can have special NVM |
2399 | * that doesn't contain a checksum | |
f96a8a0b | 2400 | */ |
ef3a0092 CW |
2401 | switch (hw->mac.type) { |
2402 | case e1000_i210: | |
2403 | case e1000_i211: | |
2404 | if (igb_get_flash_presence_i210(hw)) { | |
2405 | if (hw->nvm.ops.validate(hw) < 0) { | |
2406 | dev_err(&pdev->dev, | |
2407 | "The NVM Checksum Is Not Valid\n"); | |
2408 | err = -EIO; | |
2409 | goto err_eeprom; | |
2410 | } | |
2411 | } | |
2412 | break; | |
2413 | default: | |
f96a8a0b CW |
2414 | if (hw->nvm.ops.validate(hw) < 0) { |
2415 | dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n"); | |
2416 | err = -EIO; | |
2417 | goto err_eeprom; | |
2418 | } | |
ef3a0092 | 2419 | break; |
9d5c8243 AK |
2420 | } |
2421 | ||
2422 | /* copy the MAC address out of the NVM */ | |
2423 | if (hw->mac.ops.read_mac_addr(hw)) | |
2424 | dev_err(&pdev->dev, "NVM Read Error\n"); | |
2425 | ||
2426 | memcpy(netdev->dev_addr, hw->mac.addr, netdev->addr_len); | |
9d5c8243 | 2427 | |
aaeb6cdf | 2428 | if (!is_valid_ether_addr(netdev->dev_addr)) { |
9d5c8243 AK |
2429 | dev_err(&pdev->dev, "Invalid MAC Address\n"); |
2430 | err = -EIO; | |
2431 | goto err_eeprom; | |
2432 | } | |
2433 | ||
d67974f0 CW |
2434 | /* get firmware version for ethtool -i */ |
2435 | igb_set_fw_version(adapter); | |
2436 | ||
c061b18d | 2437 | setup_timer(&adapter->watchdog_timer, igb_watchdog, |
b980ac18 | 2438 | (unsigned long) adapter); |
c061b18d | 2439 | setup_timer(&adapter->phy_info_timer, igb_update_phy_info, |
b980ac18 | 2440 | (unsigned long) adapter); |
9d5c8243 AK |
2441 | |
2442 | INIT_WORK(&adapter->reset_task, igb_reset_task); | |
2443 | INIT_WORK(&adapter->watchdog_task, igb_watchdog_task); | |
2444 | ||
450c87c8 | 2445 | /* Initialize link properties that are user-changeable */ |
9d5c8243 AK |
2446 | adapter->fc_autoneg = true; |
2447 | hw->mac.autoneg = true; | |
2448 | hw->phy.autoneg_advertised = 0x2f; | |
2449 | ||
0cce119a AD |
2450 | hw->fc.requested_mode = e1000_fc_default; |
2451 | hw->fc.current_mode = e1000_fc_default; | |
9d5c8243 | 2452 | |
9d5c8243 AK |
2453 | igb_validate_mdi_setting(hw); |
2454 | ||
63d4a8f9 | 2455 | /* By default, support wake on port A */ |
a2cf8b6c | 2456 | if (hw->bus.func == 0) |
63d4a8f9 MV |
2457 | adapter->flags |= IGB_FLAG_WOL_SUPPORTED; |
2458 | ||
2459 | /* Check the NVM for wake support on non-port A ports */ | |
2460 | if (hw->mac.type >= e1000_82580) | |
55cac248 | 2461 | hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A + |
b980ac18 JK |
2462 | NVM_82580_LAN_FUNC_OFFSET(hw->bus.func), 1, |
2463 | &eeprom_data); | |
a2cf8b6c AD |
2464 | else if (hw->bus.func == 1) |
2465 | hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); | |
9d5c8243 | 2466 | |
63d4a8f9 MV |
2467 | if (eeprom_data & IGB_EEPROM_APME) |
2468 | adapter->flags |= IGB_FLAG_WOL_SUPPORTED; | |
9d5c8243 AK |
2469 | |
2470 | /* now that we have the eeprom settings, apply the special cases where | |
2471 | * the eeprom may be wrong or the board simply won't support wake on | |
b980ac18 JK |
2472 | * lan on a particular port |
2473 | */ | |
9d5c8243 AK |
2474 | switch (pdev->device) { |
2475 | case E1000_DEV_ID_82575GB_QUAD_COPPER: | |
63d4a8f9 | 2476 | adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED; |
9d5c8243 AK |
2477 | break; |
2478 | case E1000_DEV_ID_82575EB_FIBER_SERDES: | |
2d064c06 AD |
2479 | case E1000_DEV_ID_82576_FIBER: |
2480 | case E1000_DEV_ID_82576_SERDES: | |
9d5c8243 | 2481 | /* Wake events only supported on port A for dual fiber |
b980ac18 JK |
2482 | * regardless of eeprom setting |
2483 | */ | |
9d5c8243 | 2484 | if (rd32(E1000_STATUS) & E1000_STATUS_FUNC_1) |
63d4a8f9 | 2485 | adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED; |
9d5c8243 | 2486 | break; |
c8ea5ea9 | 2487 | case E1000_DEV_ID_82576_QUAD_COPPER: |
d5aa2252 | 2488 | case E1000_DEV_ID_82576_QUAD_COPPER_ET2: |
c8ea5ea9 AD |
2489 | /* if quad port adapter, disable WoL on all but port A */ |
2490 | if (global_quad_port_a != 0) | |
63d4a8f9 | 2491 | adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED; |
c8ea5ea9 AD |
2492 | else |
2493 | adapter->flags |= IGB_FLAG_QUAD_PORT_A; | |
2494 | /* Reset for multiple quad port adapters */ | |
2495 | if (++global_quad_port_a == 4) | |
2496 | global_quad_port_a = 0; | |
2497 | break; | |
63d4a8f9 MV |
2498 | default: |
2499 | /* If the device can't wake, don't set software support */ | |
2500 | if (!device_can_wakeup(&adapter->pdev->dev)) | |
2501 | adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED; | |
9d5c8243 AK |
2502 | } |
2503 | ||
2504 | /* initialize the wol settings based on the eeprom settings */ | |
63d4a8f9 MV |
2505 | if (adapter->flags & IGB_FLAG_WOL_SUPPORTED) |
2506 | adapter->wol |= E1000_WUFC_MAG; | |
2507 | ||
2508 | /* Some vendors want WoL disabled by default, but still supported */ | |
2509 | if ((hw->mac.type == e1000_i350) && | |
2510 | (pdev->subsystem_vendor == PCI_VENDOR_ID_HP)) { | |
2511 | adapter->flags |= IGB_FLAG_WOL_SUPPORTED; | |
2512 | adapter->wol = 0; | |
2513 | } | |
2514 | ||
2515 | device_set_wakeup_enable(&adapter->pdev->dev, | |
2516 | adapter->flags & IGB_FLAG_WOL_SUPPORTED); | |
9d5c8243 AK |
2517 | |
2518 | /* reset the hardware with the new settings */ | |
2519 | igb_reset(adapter); | |
2520 | ||
441fc6fd CW |
2521 | /* Init the I2C interface */ |
2522 | err = igb_init_i2c(adapter); | |
2523 | if (err) { | |
2524 | dev_err(&pdev->dev, "failed to init i2c interface\n"); | |
2525 | goto err_eeprom; | |
2526 | } | |
2527 | ||
9d5c8243 | 2528 | /* let the f/w know that the h/w is now under the control of the |
e52c0f96 CW |
2529 | * driver. |
2530 | */ | |
9d5c8243 AK |
2531 | igb_get_hw_control(adapter); |
2532 | ||
9d5c8243 AK |
2533 | strcpy(netdev->name, "eth%d"); |
2534 | err = register_netdev(netdev); | |
2535 | if (err) | |
2536 | goto err_register; | |
2537 | ||
b168dfc5 JB |
2538 | /* carrier off reporting is important to ethtool even BEFORE open */ |
2539 | netif_carrier_off(netdev); | |
2540 | ||
421e02f0 | 2541 | #ifdef CONFIG_IGB_DCA |
bbd98fe4 | 2542 | if (dca_add_requester(&pdev->dev) == 0) { |
7dfc16fa | 2543 | adapter->flags |= IGB_FLAG_DCA_ENABLED; |
fe4506b6 | 2544 | dev_info(&pdev->dev, "DCA enabled\n"); |
fe4506b6 JC |
2545 | igb_setup_dca(adapter); |
2546 | } | |
fe4506b6 | 2547 | |
38c845c7 | 2548 | #endif |
e428893b CW |
2549 | #ifdef CONFIG_IGB_HWMON |
2550 | /* Initialize the thermal sensor on i350 devices. */ | |
2551 | if (hw->mac.type == e1000_i350 && hw->bus.func == 0) { | |
2552 | u16 ets_word; | |
3c89f6d0 | 2553 | |
b980ac18 | 2554 | /* Read the NVM to determine if this i350 device supports an |
e428893b CW |
2555 | * external thermal sensor. |
2556 | */ | |
2557 | hw->nvm.ops.read(hw, NVM_ETS_CFG, 1, &ets_word); | |
2558 | if (ets_word != 0x0000 && ets_word != 0xFFFF) | |
2559 | adapter->ets = true; | |
2560 | else | |
2561 | adapter->ets = false; | |
2562 | if (igb_sysfs_init(adapter)) | |
2563 | dev_err(&pdev->dev, | |
2564 | "failed to allocate sysfs resources\n"); | |
2565 | } else { | |
2566 | adapter->ets = false; | |
2567 | } | |
2568 | #endif | |
56cec249 CW |
2569 | /* Check if Media Autosense is enabled */ |
2570 | adapter->ei = *ei; | |
2571 | if (hw->dev_spec._82575.mas_capable) | |
2572 | igb_init_mas(adapter); | |
2573 | ||
673b8b70 | 2574 | /* do hw tstamp init after resetting */ |
7ebae817 | 2575 | igb_ptp_init(adapter); |
673b8b70 | 2576 | |
9d5c8243 | 2577 | dev_info(&pdev->dev, "Intel(R) Gigabit Ethernet Network Connection\n"); |
ceb5f13b CW |
2578 | /* print bus type/speed/width info, not applicable to i354 */ |
2579 | if (hw->mac.type != e1000_i354) { | |
2580 | dev_info(&pdev->dev, "%s: (PCIe:%s:%s) %pM\n", | |
2581 | netdev->name, | |
2582 | ((hw->bus.speed == e1000_bus_speed_2500) ? "2.5Gb/s" : | |
2583 | (hw->bus.speed == e1000_bus_speed_5000) ? "5.0Gb/s" : | |
2584 | "unknown"), | |
2585 | ((hw->bus.width == e1000_bus_width_pcie_x4) ? | |
2586 | "Width x4" : | |
2587 | (hw->bus.width == e1000_bus_width_pcie_x2) ? | |
2588 | "Width x2" : | |
2589 | (hw->bus.width == e1000_bus_width_pcie_x1) ? | |
2590 | "Width x1" : "unknown"), netdev->dev_addr); | |
2591 | } | |
9d5c8243 | 2592 | |
53ea6c7e TF |
2593 | if ((hw->mac.type >= e1000_i210 || |
2594 | igb_get_flash_presence_i210(hw))) { | |
2595 | ret_val = igb_read_part_string(hw, part_str, | |
2596 | E1000_PBANUM_LENGTH); | |
2597 | } else { | |
2598 | ret_val = -E1000_ERR_INVM_VALUE_NOT_FOUND; | |
2599 | } | |
2600 | ||
9835fd73 CW |
2601 | if (ret_val) |
2602 | strcpy(part_str, "Unknown"); | |
2603 | dev_info(&pdev->dev, "%s: PBA No: %s\n", netdev->name, part_str); | |
9d5c8243 AK |
2604 | dev_info(&pdev->dev, |
2605 | "Using %s interrupts. %d rx queue(s), %d tx queue(s)\n", | |
cd14ef54 | 2606 | (adapter->flags & IGB_FLAG_HAS_MSIX) ? "MSI-X" : |
7dfc16fa | 2607 | (adapter->flags & IGB_FLAG_HAS_MSI) ? "MSI" : "legacy", |
9d5c8243 | 2608 | adapter->num_rx_queues, adapter->num_tx_queues); |
f4c01e96 CW |
2609 | if (hw->phy.media_type == e1000_media_type_copper) { |
2610 | switch (hw->mac.type) { | |
2611 | case e1000_i350: | |
2612 | case e1000_i210: | |
2613 | case e1000_i211: | |
2614 | /* Enable EEE for internal copper PHY devices */ | |
2615 | err = igb_set_eee_i350(hw); | |
2616 | if ((!err) && | |
2617 | (!hw->dev_spec._82575.eee_disable)) { | |
2618 | adapter->eee_advert = | |
2619 | MDIO_EEE_100TX | MDIO_EEE_1000T; | |
2620 | adapter->flags |= IGB_FLAG_EEE; | |
2621 | } | |
2622 | break; | |
2623 | case e1000_i354: | |
ceb5f13b | 2624 | if ((rd32(E1000_CTRL_EXT) & |
f4c01e96 CW |
2625 | E1000_CTRL_EXT_LINK_MODE_SGMII)) { |
2626 | err = igb_set_eee_i354(hw); | |
2627 | if ((!err) && | |
2628 | (!hw->dev_spec._82575.eee_disable)) { | |
2629 | adapter->eee_advert = | |
2630 | MDIO_EEE_100TX | MDIO_EEE_1000T; | |
2631 | adapter->flags |= IGB_FLAG_EEE; | |
2632 | } | |
2633 | } | |
2634 | break; | |
2635 | default: | |
2636 | break; | |
ceb5f13b | 2637 | } |
09b068d4 | 2638 | } |
749ab2cd | 2639 | pm_runtime_put_noidle(&pdev->dev); |
9d5c8243 AK |
2640 | return 0; |
2641 | ||
2642 | err_register: | |
2643 | igb_release_hw_control(adapter); | |
441fc6fd | 2644 | memset(&adapter->i2c_adap, 0, sizeof(adapter->i2c_adap)); |
9d5c8243 AK |
2645 | err_eeprom: |
2646 | if (!igb_check_reset_block(hw)) | |
f5f4cf08 | 2647 | igb_reset_phy(hw); |
9d5c8243 AK |
2648 | |
2649 | if (hw->flash_address) | |
2650 | iounmap(hw->flash_address); | |
9d5c8243 | 2651 | err_sw_init: |
047e0030 | 2652 | igb_clear_interrupt_scheme(adapter); |
75009b3a | 2653 | pci_iounmap(pdev, hw->hw_addr); |
9d5c8243 AK |
2654 | err_ioremap: |
2655 | free_netdev(netdev); | |
2656 | err_alloc_etherdev: | |
559e9c49 | 2657 | pci_release_selected_regions(pdev, |
b980ac18 | 2658 | pci_select_bars(pdev, IORESOURCE_MEM)); |
9d5c8243 AK |
2659 | err_pci_reg: |
2660 | err_dma: | |
2661 | pci_disable_device(pdev); | |
2662 | return err; | |
2663 | } | |
2664 | ||
fa44f2f1 | 2665 | #ifdef CONFIG_PCI_IOV |
781798a1 | 2666 | static int igb_disable_sriov(struct pci_dev *pdev) |
fa44f2f1 GR |
2667 | { |
2668 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2669 | struct igb_adapter *adapter = netdev_priv(netdev); | |
2670 | struct e1000_hw *hw = &adapter->hw; | |
2671 | ||
2672 | /* reclaim resources allocated to VFs */ | |
2673 | if (adapter->vf_data) { | |
2674 | /* disable iov and allow time for transactions to clear */ | |
b09186d2 | 2675 | if (pci_vfs_assigned(pdev)) { |
fa44f2f1 GR |
2676 | dev_warn(&pdev->dev, |
2677 | "Cannot deallocate SR-IOV virtual functions while they are assigned - VFs will not be deallocated\n"); | |
2678 | return -EPERM; | |
2679 | } else { | |
2680 | pci_disable_sriov(pdev); | |
2681 | msleep(500); | |
2682 | } | |
2683 | ||
2684 | kfree(adapter->vf_data); | |
2685 | adapter->vf_data = NULL; | |
2686 | adapter->vfs_allocated_count = 0; | |
2687 | wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ); | |
2688 | wrfl(); | |
2689 | msleep(100); | |
2690 | dev_info(&pdev->dev, "IOV Disabled\n"); | |
2691 | ||
2692 | /* Re-enable DMA Coalescing flag since IOV is turned off */ | |
2693 | adapter->flags |= IGB_FLAG_DMAC; | |
2694 | } | |
2695 | ||
2696 | return 0; | |
2697 | } | |
2698 | ||
2699 | static int igb_enable_sriov(struct pci_dev *pdev, int num_vfs) | |
2700 | { | |
2701 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2702 | struct igb_adapter *adapter = netdev_priv(netdev); | |
2703 | int old_vfs = pci_num_vf(pdev); | |
2704 | int err = 0; | |
2705 | int i; | |
2706 | ||
cd14ef54 | 2707 | if (!(adapter->flags & IGB_FLAG_HAS_MSIX) || num_vfs > 7) { |
50267196 MW |
2708 | err = -EPERM; |
2709 | goto out; | |
2710 | } | |
fa44f2f1 GR |
2711 | if (!num_vfs) |
2712 | goto out; | |
fa44f2f1 | 2713 | |
781798a1 SA |
2714 | if (old_vfs) { |
2715 | dev_info(&pdev->dev, "%d pre-allocated VFs found - override max_vfs setting of %d\n", | |
2716 | old_vfs, max_vfs); | |
2717 | adapter->vfs_allocated_count = old_vfs; | |
2718 | } else | |
2719 | adapter->vfs_allocated_count = num_vfs; | |
fa44f2f1 GR |
2720 | |
2721 | adapter->vf_data = kcalloc(adapter->vfs_allocated_count, | |
2722 | sizeof(struct vf_data_storage), GFP_KERNEL); | |
2723 | ||
2724 | /* if allocation failed then we do not support SR-IOV */ | |
2725 | if (!adapter->vf_data) { | |
2726 | adapter->vfs_allocated_count = 0; | |
2727 | dev_err(&pdev->dev, | |
2728 | "Unable to allocate memory for VF Data Storage\n"); | |
2729 | err = -ENOMEM; | |
2730 | goto out; | |
2731 | } | |
2732 | ||
781798a1 SA |
2733 | /* only call pci_enable_sriov() if no VFs are allocated already */ |
2734 | if (!old_vfs) { | |
2735 | err = pci_enable_sriov(pdev, adapter->vfs_allocated_count); | |
2736 | if (err) | |
2737 | goto err_out; | |
2738 | } | |
fa44f2f1 GR |
2739 | dev_info(&pdev->dev, "%d VFs allocated\n", |
2740 | adapter->vfs_allocated_count); | |
2741 | for (i = 0; i < adapter->vfs_allocated_count; i++) | |
2742 | igb_vf_configure(adapter, i); | |
2743 | ||
2744 | /* DMA Coalescing is not supported in IOV mode. */ | |
2745 | adapter->flags &= ~IGB_FLAG_DMAC; | |
2746 | goto out; | |
2747 | ||
2748 | err_out: | |
2749 | kfree(adapter->vf_data); | |
2750 | adapter->vf_data = NULL; | |
2751 | adapter->vfs_allocated_count = 0; | |
2752 | out: | |
2753 | return err; | |
2754 | } | |
2755 | ||
2756 | #endif | |
b980ac18 | 2757 | /** |
441fc6fd CW |
2758 | * igb_remove_i2c - Cleanup I2C interface |
2759 | * @adapter: pointer to adapter structure | |
b980ac18 | 2760 | **/ |
441fc6fd CW |
2761 | static void igb_remove_i2c(struct igb_adapter *adapter) |
2762 | { | |
441fc6fd CW |
2763 | /* free the adapter bus structure */ |
2764 | i2c_del_adapter(&adapter->i2c_adap); | |
2765 | } | |
2766 | ||
9d5c8243 | 2767 | /** |
b980ac18 JK |
2768 | * igb_remove - Device Removal Routine |
2769 | * @pdev: PCI device information struct | |
9d5c8243 | 2770 | * |
b980ac18 JK |
2771 | * igb_remove is called by the PCI subsystem to alert the driver |
2772 | * that it should release a PCI device. The could be caused by a | |
2773 | * Hot-Plug event, or because the driver is going to be removed from | |
2774 | * memory. | |
9d5c8243 | 2775 | **/ |
9f9a12f8 | 2776 | static void igb_remove(struct pci_dev *pdev) |
9d5c8243 AK |
2777 | { |
2778 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2779 | struct igb_adapter *adapter = netdev_priv(netdev); | |
fe4506b6 | 2780 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 | 2781 | |
749ab2cd | 2782 | pm_runtime_get_noresume(&pdev->dev); |
e428893b CW |
2783 | #ifdef CONFIG_IGB_HWMON |
2784 | igb_sysfs_exit(adapter); | |
2785 | #endif | |
441fc6fd | 2786 | igb_remove_i2c(adapter); |
a79f4f88 | 2787 | igb_ptp_stop(adapter); |
b980ac18 | 2788 | /* The watchdog timer may be rescheduled, so explicitly |
760141a5 TH |
2789 | * disable watchdog from being rescheduled. |
2790 | */ | |
9d5c8243 AK |
2791 | set_bit(__IGB_DOWN, &adapter->state); |
2792 | del_timer_sync(&adapter->watchdog_timer); | |
2793 | del_timer_sync(&adapter->phy_info_timer); | |
2794 | ||
760141a5 TH |
2795 | cancel_work_sync(&adapter->reset_task); |
2796 | cancel_work_sync(&adapter->watchdog_task); | |
9d5c8243 | 2797 | |
421e02f0 | 2798 | #ifdef CONFIG_IGB_DCA |
7dfc16fa | 2799 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) { |
fe4506b6 JC |
2800 | dev_info(&pdev->dev, "DCA disabled\n"); |
2801 | dca_remove_requester(&pdev->dev); | |
7dfc16fa | 2802 | adapter->flags &= ~IGB_FLAG_DCA_ENABLED; |
cbd347ad | 2803 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE); |
fe4506b6 JC |
2804 | } |
2805 | #endif | |
2806 | ||
9d5c8243 | 2807 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
b980ac18 JK |
2808 | * would have already happened in close and is redundant. |
2809 | */ | |
9d5c8243 AK |
2810 | igb_release_hw_control(adapter); |
2811 | ||
2812 | unregister_netdev(netdev); | |
2813 | ||
047e0030 | 2814 | igb_clear_interrupt_scheme(adapter); |
9d5c8243 | 2815 | |
37680117 | 2816 | #ifdef CONFIG_PCI_IOV |
fa44f2f1 | 2817 | igb_disable_sriov(pdev); |
37680117 | 2818 | #endif |
559e9c49 | 2819 | |
75009b3a | 2820 | pci_iounmap(pdev, hw->hw_addr); |
28b0759c AD |
2821 | if (hw->flash_address) |
2822 | iounmap(hw->flash_address); | |
559e9c49 | 2823 | pci_release_selected_regions(pdev, |
b980ac18 | 2824 | pci_select_bars(pdev, IORESOURCE_MEM)); |
9d5c8243 | 2825 | |
1128c756 | 2826 | kfree(adapter->shadow_vfta); |
9d5c8243 AK |
2827 | free_netdev(netdev); |
2828 | ||
19d5afd4 | 2829 | pci_disable_pcie_error_reporting(pdev); |
40a914fa | 2830 | |
9d5c8243 AK |
2831 | pci_disable_device(pdev); |
2832 | } | |
2833 | ||
a6b623e0 | 2834 | /** |
b980ac18 JK |
2835 | * igb_probe_vfs - Initialize vf data storage and add VFs to pci config space |
2836 | * @adapter: board private structure to initialize | |
a6b623e0 | 2837 | * |
b980ac18 JK |
2838 | * This function initializes the vf specific data storage and then attempts to |
2839 | * allocate the VFs. The reason for ordering it this way is because it is much | |
2840 | * mor expensive time wise to disable SR-IOV than it is to allocate and free | |
2841 | * the memory for the VFs. | |
a6b623e0 | 2842 | **/ |
9f9a12f8 | 2843 | static void igb_probe_vfs(struct igb_adapter *adapter) |
a6b623e0 AD |
2844 | { |
2845 | #ifdef CONFIG_PCI_IOV | |
2846 | struct pci_dev *pdev = adapter->pdev; | |
f96a8a0b | 2847 | struct e1000_hw *hw = &adapter->hw; |
a6b623e0 | 2848 | |
f96a8a0b CW |
2849 | /* Virtualization features not supported on i210 family. */ |
2850 | if ((hw->mac.type == e1000_i210) || (hw->mac.type == e1000_i211)) | |
2851 | return; | |
2852 | ||
fa44f2f1 | 2853 | pci_sriov_set_totalvfs(pdev, 7); |
781798a1 | 2854 | igb_pci_enable_sriov(pdev, max_vfs); |
0224d663 | 2855 | |
a6b623e0 AD |
2856 | #endif /* CONFIG_PCI_IOV */ |
2857 | } | |
2858 | ||
fa44f2f1 | 2859 | static void igb_init_queue_configuration(struct igb_adapter *adapter) |
9d5c8243 AK |
2860 | { |
2861 | struct e1000_hw *hw = &adapter->hw; | |
374a542d | 2862 | u32 max_rss_queues; |
9d5c8243 | 2863 | |
374a542d | 2864 | /* Determine the maximum number of RSS queues supported. */ |
f96a8a0b | 2865 | switch (hw->mac.type) { |
374a542d MV |
2866 | case e1000_i211: |
2867 | max_rss_queues = IGB_MAX_RX_QUEUES_I211; | |
2868 | break; | |
2869 | case e1000_82575: | |
f96a8a0b | 2870 | case e1000_i210: |
374a542d MV |
2871 | max_rss_queues = IGB_MAX_RX_QUEUES_82575; |
2872 | break; | |
2873 | case e1000_i350: | |
2874 | /* I350 cannot do RSS and SR-IOV at the same time */ | |
2875 | if (!!adapter->vfs_allocated_count) { | |
2876 | max_rss_queues = 1; | |
2877 | break; | |
2878 | } | |
2879 | /* fall through */ | |
2880 | case e1000_82576: | |
2881 | if (!!adapter->vfs_allocated_count) { | |
2882 | max_rss_queues = 2; | |
2883 | break; | |
2884 | } | |
2885 | /* fall through */ | |
2886 | case e1000_82580: | |
ceb5f13b | 2887 | case e1000_i354: |
374a542d MV |
2888 | default: |
2889 | max_rss_queues = IGB_MAX_RX_QUEUES; | |
f96a8a0b | 2890 | break; |
374a542d MV |
2891 | } |
2892 | ||
2893 | adapter->rss_queues = min_t(u32, max_rss_queues, num_online_cpus()); | |
2894 | ||
2895 | /* Determine if we need to pair queues. */ | |
2896 | switch (hw->mac.type) { | |
2897 | case e1000_82575: | |
f96a8a0b | 2898 | case e1000_i211: |
374a542d | 2899 | /* Device supports enough interrupts without queue pairing. */ |
f96a8a0b | 2900 | break; |
374a542d | 2901 | case e1000_82576: |
b980ac18 | 2902 | /* If VFs are going to be allocated with RSS queues then we |
374a542d MV |
2903 | * should pair the queues in order to conserve interrupts due |
2904 | * to limited supply. | |
2905 | */ | |
2906 | if ((adapter->rss_queues > 1) && | |
2907 | (adapter->vfs_allocated_count > 6)) | |
2908 | adapter->flags |= IGB_FLAG_QUEUE_PAIRS; | |
2909 | /* fall through */ | |
2910 | case e1000_82580: | |
2911 | case e1000_i350: | |
ceb5f13b | 2912 | case e1000_i354: |
374a542d | 2913 | case e1000_i210: |
f96a8a0b | 2914 | default: |
b980ac18 | 2915 | /* If rss_queues > half of max_rss_queues, pair the queues in |
374a542d MV |
2916 | * order to conserve interrupts due to limited supply. |
2917 | */ | |
2918 | if (adapter->rss_queues > (max_rss_queues / 2)) | |
2919 | adapter->flags |= IGB_FLAG_QUEUE_PAIRS; | |
f96a8a0b CW |
2920 | break; |
2921 | } | |
fa44f2f1 GR |
2922 | } |
2923 | ||
2924 | /** | |
b980ac18 JK |
2925 | * igb_sw_init - Initialize general software structures (struct igb_adapter) |
2926 | * @adapter: board private structure to initialize | |
fa44f2f1 | 2927 | * |
b980ac18 JK |
2928 | * igb_sw_init initializes the Adapter private data structure. |
2929 | * Fields are initialized based on PCI device information and | |
2930 | * OS network device settings (MTU size). | |
fa44f2f1 GR |
2931 | **/ |
2932 | static int igb_sw_init(struct igb_adapter *adapter) | |
2933 | { | |
2934 | struct e1000_hw *hw = &adapter->hw; | |
2935 | struct net_device *netdev = adapter->netdev; | |
2936 | struct pci_dev *pdev = adapter->pdev; | |
2937 | ||
2938 | pci_read_config_word(pdev, PCI_COMMAND, &hw->bus.pci_cmd_word); | |
2939 | ||
2940 | /* set default ring sizes */ | |
2941 | adapter->tx_ring_count = IGB_DEFAULT_TXD; | |
2942 | adapter->rx_ring_count = IGB_DEFAULT_RXD; | |
2943 | ||
2944 | /* set default ITR values */ | |
2945 | adapter->rx_itr_setting = IGB_DEFAULT_ITR; | |
2946 | adapter->tx_itr_setting = IGB_DEFAULT_ITR; | |
2947 | ||
2948 | /* set default work limits */ | |
2949 | adapter->tx_work_limit = IGB_DEFAULT_TX_WORK; | |
2950 | ||
2951 | adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN + | |
2952 | VLAN_HLEN; | |
2953 | adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; | |
2954 | ||
2955 | spin_lock_init(&adapter->stats64_lock); | |
2956 | #ifdef CONFIG_PCI_IOV | |
2957 | switch (hw->mac.type) { | |
2958 | case e1000_82576: | |
2959 | case e1000_i350: | |
2960 | if (max_vfs > 7) { | |
2961 | dev_warn(&pdev->dev, | |
2962 | "Maximum of 7 VFs per PF, using max\n"); | |
d0f63acc | 2963 | max_vfs = adapter->vfs_allocated_count = 7; |
fa44f2f1 GR |
2964 | } else |
2965 | adapter->vfs_allocated_count = max_vfs; | |
2966 | if (adapter->vfs_allocated_count) | |
2967 | dev_warn(&pdev->dev, | |
2968 | "Enabling SR-IOV VFs using the module parameter is deprecated - please use the pci sysfs interface.\n"); | |
2969 | break; | |
2970 | default: | |
2971 | break; | |
2972 | } | |
2973 | #endif /* CONFIG_PCI_IOV */ | |
2974 | ||
2975 | igb_init_queue_configuration(adapter); | |
a99955fc | 2976 | |
1128c756 | 2977 | /* Setup and initialize a copy of the hw vlan table array */ |
b2adaca9 JP |
2978 | adapter->shadow_vfta = kcalloc(E1000_VLAN_FILTER_TBL_SIZE, sizeof(u32), |
2979 | GFP_ATOMIC); | |
1128c756 | 2980 | |
a6b623e0 | 2981 | /* This call may decrease the number of queues */ |
53c7d064 | 2982 | if (igb_init_interrupt_scheme(adapter, true)) { |
9d5c8243 AK |
2983 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); |
2984 | return -ENOMEM; | |
2985 | } | |
2986 | ||
a6b623e0 AD |
2987 | igb_probe_vfs(adapter); |
2988 | ||
9d5c8243 AK |
2989 | /* Explicitly disable IRQ since the NIC can be in any state. */ |
2990 | igb_irq_disable(adapter); | |
2991 | ||
f96a8a0b | 2992 | if (hw->mac.type >= e1000_i350) |
831ec0b4 CW |
2993 | adapter->flags &= ~IGB_FLAG_DMAC; |
2994 | ||
9d5c8243 AK |
2995 | set_bit(__IGB_DOWN, &adapter->state); |
2996 | return 0; | |
2997 | } | |
2998 | ||
2999 | /** | |
b980ac18 JK |
3000 | * igb_open - Called when a network interface is made active |
3001 | * @netdev: network interface device structure | |
9d5c8243 | 3002 | * |
b980ac18 | 3003 | * Returns 0 on success, negative value on failure |
9d5c8243 | 3004 | * |
b980ac18 JK |
3005 | * The open entry point is called when a network interface is made |
3006 | * active by the system (IFF_UP). At this point all resources needed | |
3007 | * for transmit and receive operations are allocated, the interrupt | |
3008 | * handler is registered with the OS, the watchdog timer is started, | |
3009 | * and the stack is notified that the interface is ready. | |
9d5c8243 | 3010 | **/ |
749ab2cd | 3011 | static int __igb_open(struct net_device *netdev, bool resuming) |
9d5c8243 AK |
3012 | { |
3013 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3014 | struct e1000_hw *hw = &adapter->hw; | |
749ab2cd | 3015 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
3016 | int err; |
3017 | int i; | |
3018 | ||
3019 | /* disallow open during test */ | |
749ab2cd YZ |
3020 | if (test_bit(__IGB_TESTING, &adapter->state)) { |
3021 | WARN_ON(resuming); | |
9d5c8243 | 3022 | return -EBUSY; |
749ab2cd YZ |
3023 | } |
3024 | ||
3025 | if (!resuming) | |
3026 | pm_runtime_get_sync(&pdev->dev); | |
9d5c8243 | 3027 | |
b168dfc5 JB |
3028 | netif_carrier_off(netdev); |
3029 | ||
9d5c8243 AK |
3030 | /* allocate transmit descriptors */ |
3031 | err = igb_setup_all_tx_resources(adapter); | |
3032 | if (err) | |
3033 | goto err_setup_tx; | |
3034 | ||
3035 | /* allocate receive descriptors */ | |
3036 | err = igb_setup_all_rx_resources(adapter); | |
3037 | if (err) | |
3038 | goto err_setup_rx; | |
3039 | ||
88a268c1 | 3040 | igb_power_up_link(adapter); |
9d5c8243 | 3041 | |
9d5c8243 AK |
3042 | /* before we allocate an interrupt, we must be ready to handle it. |
3043 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt | |
3044 | * as soon as we call pci_request_irq, so we have to setup our | |
b980ac18 JK |
3045 | * clean_rx handler before we do so. |
3046 | */ | |
9d5c8243 AK |
3047 | igb_configure(adapter); |
3048 | ||
3049 | err = igb_request_irq(adapter); | |
3050 | if (err) | |
3051 | goto err_req_irq; | |
3052 | ||
0c2cc02e AD |
3053 | /* Notify the stack of the actual queue counts. */ |
3054 | err = netif_set_real_num_tx_queues(adapter->netdev, | |
3055 | adapter->num_tx_queues); | |
3056 | if (err) | |
3057 | goto err_set_queues; | |
3058 | ||
3059 | err = netif_set_real_num_rx_queues(adapter->netdev, | |
3060 | adapter->num_rx_queues); | |
3061 | if (err) | |
3062 | goto err_set_queues; | |
3063 | ||
9d5c8243 AK |
3064 | /* From here on the code is the same as igb_up() */ |
3065 | clear_bit(__IGB_DOWN, &adapter->state); | |
3066 | ||
0d1ae7f4 AD |
3067 | for (i = 0; i < adapter->num_q_vectors; i++) |
3068 | napi_enable(&(adapter->q_vector[i]->napi)); | |
9d5c8243 AK |
3069 | |
3070 | /* Clear any pending interrupts. */ | |
3071 | rd32(E1000_ICR); | |
844290e5 PW |
3072 | |
3073 | igb_irq_enable(adapter); | |
3074 | ||
d4960307 AD |
3075 | /* notify VFs that reset has been completed */ |
3076 | if (adapter->vfs_allocated_count) { | |
3077 | u32 reg_data = rd32(E1000_CTRL_EXT); | |
9005df38 | 3078 | |
d4960307 AD |
3079 | reg_data |= E1000_CTRL_EXT_PFRSTD; |
3080 | wr32(E1000_CTRL_EXT, reg_data); | |
3081 | } | |
3082 | ||
d55b53ff JK |
3083 | netif_tx_start_all_queues(netdev); |
3084 | ||
749ab2cd YZ |
3085 | if (!resuming) |
3086 | pm_runtime_put(&pdev->dev); | |
3087 | ||
25568a53 AD |
3088 | /* start the watchdog. */ |
3089 | hw->mac.get_link_status = 1; | |
3090 | schedule_work(&adapter->watchdog_task); | |
9d5c8243 AK |
3091 | |
3092 | return 0; | |
3093 | ||
0c2cc02e AD |
3094 | err_set_queues: |
3095 | igb_free_irq(adapter); | |
9d5c8243 AK |
3096 | err_req_irq: |
3097 | igb_release_hw_control(adapter); | |
88a268c1 | 3098 | igb_power_down_link(adapter); |
9d5c8243 AK |
3099 | igb_free_all_rx_resources(adapter); |
3100 | err_setup_rx: | |
3101 | igb_free_all_tx_resources(adapter); | |
3102 | err_setup_tx: | |
3103 | igb_reset(adapter); | |
749ab2cd YZ |
3104 | if (!resuming) |
3105 | pm_runtime_put(&pdev->dev); | |
9d5c8243 AK |
3106 | |
3107 | return err; | |
3108 | } | |
3109 | ||
749ab2cd YZ |
3110 | static int igb_open(struct net_device *netdev) |
3111 | { | |
3112 | return __igb_open(netdev, false); | |
3113 | } | |
3114 | ||
9d5c8243 | 3115 | /** |
b980ac18 JK |
3116 | * igb_close - Disables a network interface |
3117 | * @netdev: network interface device structure | |
9d5c8243 | 3118 | * |
b980ac18 | 3119 | * Returns 0, this is not allowed to fail |
9d5c8243 | 3120 | * |
b980ac18 JK |
3121 | * The close entry point is called when an interface is de-activated |
3122 | * by the OS. The hardware is still under the driver's control, but | |
3123 | * needs to be disabled. A global MAC reset is issued to stop the | |
3124 | * hardware, and all transmit and receive resources are freed. | |
9d5c8243 | 3125 | **/ |
749ab2cd | 3126 | static int __igb_close(struct net_device *netdev, bool suspending) |
9d5c8243 AK |
3127 | { |
3128 | struct igb_adapter *adapter = netdev_priv(netdev); | |
749ab2cd | 3129 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
3130 | |
3131 | WARN_ON(test_bit(__IGB_RESETTING, &adapter->state)); | |
9d5c8243 | 3132 | |
749ab2cd YZ |
3133 | if (!suspending) |
3134 | pm_runtime_get_sync(&pdev->dev); | |
3135 | ||
3136 | igb_down(adapter); | |
9d5c8243 AK |
3137 | igb_free_irq(adapter); |
3138 | ||
3139 | igb_free_all_tx_resources(adapter); | |
3140 | igb_free_all_rx_resources(adapter); | |
3141 | ||
749ab2cd YZ |
3142 | if (!suspending) |
3143 | pm_runtime_put_sync(&pdev->dev); | |
9d5c8243 AK |
3144 | return 0; |
3145 | } | |
3146 | ||
749ab2cd YZ |
3147 | static int igb_close(struct net_device *netdev) |
3148 | { | |
3149 | return __igb_close(netdev, false); | |
3150 | } | |
3151 | ||
9d5c8243 | 3152 | /** |
b980ac18 JK |
3153 | * igb_setup_tx_resources - allocate Tx resources (Descriptors) |
3154 | * @tx_ring: tx descriptor ring (for a specific queue) to setup | |
9d5c8243 | 3155 | * |
b980ac18 | 3156 | * Return 0 on success, negative on failure |
9d5c8243 | 3157 | **/ |
80785298 | 3158 | int igb_setup_tx_resources(struct igb_ring *tx_ring) |
9d5c8243 | 3159 | { |
59d71989 | 3160 | struct device *dev = tx_ring->dev; |
9d5c8243 AK |
3161 | int size; |
3162 | ||
06034649 | 3163 | size = sizeof(struct igb_tx_buffer) * tx_ring->count; |
f33005a6 AD |
3164 | |
3165 | tx_ring->tx_buffer_info = vzalloc(size); | |
06034649 | 3166 | if (!tx_ring->tx_buffer_info) |
9d5c8243 | 3167 | goto err; |
9d5c8243 AK |
3168 | |
3169 | /* round up to nearest 4K */ | |
85e8d004 | 3170 | tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc); |
9d5c8243 AK |
3171 | tx_ring->size = ALIGN(tx_ring->size, 4096); |
3172 | ||
5536d210 AD |
3173 | tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size, |
3174 | &tx_ring->dma, GFP_KERNEL); | |
9d5c8243 AK |
3175 | if (!tx_ring->desc) |
3176 | goto err; | |
3177 | ||
9d5c8243 AK |
3178 | tx_ring->next_to_use = 0; |
3179 | tx_ring->next_to_clean = 0; | |
81c2fc22 | 3180 | |
9d5c8243 AK |
3181 | return 0; |
3182 | ||
3183 | err: | |
06034649 | 3184 | vfree(tx_ring->tx_buffer_info); |
f33005a6 AD |
3185 | tx_ring->tx_buffer_info = NULL; |
3186 | dev_err(dev, "Unable to allocate memory for the Tx descriptor ring\n"); | |
9d5c8243 AK |
3187 | return -ENOMEM; |
3188 | } | |
3189 | ||
3190 | /** | |
b980ac18 JK |
3191 | * igb_setup_all_tx_resources - wrapper to allocate Tx resources |
3192 | * (Descriptors) for all queues | |
3193 | * @adapter: board private structure | |
9d5c8243 | 3194 | * |
b980ac18 | 3195 | * Return 0 on success, negative on failure |
9d5c8243 AK |
3196 | **/ |
3197 | static int igb_setup_all_tx_resources(struct igb_adapter *adapter) | |
3198 | { | |
439705e1 | 3199 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
3200 | int i, err = 0; |
3201 | ||
3202 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
3025a446 | 3203 | err = igb_setup_tx_resources(adapter->tx_ring[i]); |
9d5c8243 | 3204 | if (err) { |
439705e1 | 3205 | dev_err(&pdev->dev, |
9d5c8243 AK |
3206 | "Allocation for Tx Queue %u failed\n", i); |
3207 | for (i--; i >= 0; i--) | |
3025a446 | 3208 | igb_free_tx_resources(adapter->tx_ring[i]); |
9d5c8243 AK |
3209 | break; |
3210 | } | |
3211 | } | |
3212 | ||
3213 | return err; | |
3214 | } | |
3215 | ||
3216 | /** | |
b980ac18 JK |
3217 | * igb_setup_tctl - configure the transmit control registers |
3218 | * @adapter: Board private structure | |
9d5c8243 | 3219 | **/ |
d7ee5b3a | 3220 | void igb_setup_tctl(struct igb_adapter *adapter) |
9d5c8243 | 3221 | { |
9d5c8243 AK |
3222 | struct e1000_hw *hw = &adapter->hw; |
3223 | u32 tctl; | |
9d5c8243 | 3224 | |
85b430b4 AD |
3225 | /* disable queue 0 which is enabled by default on 82575 and 82576 */ |
3226 | wr32(E1000_TXDCTL(0), 0); | |
9d5c8243 AK |
3227 | |
3228 | /* Program the Transmit Control Register */ | |
9d5c8243 AK |
3229 | tctl = rd32(E1000_TCTL); |
3230 | tctl &= ~E1000_TCTL_CT; | |
3231 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | | |
3232 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); | |
3233 | ||
3234 | igb_config_collision_dist(hw); | |
3235 | ||
9d5c8243 AK |
3236 | /* Enable transmits */ |
3237 | tctl |= E1000_TCTL_EN; | |
3238 | ||
3239 | wr32(E1000_TCTL, tctl); | |
3240 | } | |
3241 | ||
85b430b4 | 3242 | /** |
b980ac18 JK |
3243 | * igb_configure_tx_ring - Configure transmit ring after Reset |
3244 | * @adapter: board private structure | |
3245 | * @ring: tx ring to configure | |
85b430b4 | 3246 | * |
b980ac18 | 3247 | * Configure a transmit ring after a reset. |
85b430b4 | 3248 | **/ |
d7ee5b3a | 3249 | void igb_configure_tx_ring(struct igb_adapter *adapter, |
9005df38 | 3250 | struct igb_ring *ring) |
85b430b4 AD |
3251 | { |
3252 | struct e1000_hw *hw = &adapter->hw; | |
a74420e0 | 3253 | u32 txdctl = 0; |
85b430b4 AD |
3254 | u64 tdba = ring->dma; |
3255 | int reg_idx = ring->reg_idx; | |
3256 | ||
3257 | /* disable the queue */ | |
a74420e0 | 3258 | wr32(E1000_TXDCTL(reg_idx), 0); |
85b430b4 AD |
3259 | wrfl(); |
3260 | mdelay(10); | |
3261 | ||
3262 | wr32(E1000_TDLEN(reg_idx), | |
b980ac18 | 3263 | ring->count * sizeof(union e1000_adv_tx_desc)); |
85b430b4 | 3264 | wr32(E1000_TDBAL(reg_idx), |
b980ac18 | 3265 | tdba & 0x00000000ffffffffULL); |
85b430b4 AD |
3266 | wr32(E1000_TDBAH(reg_idx), tdba >> 32); |
3267 | ||
fce99e34 | 3268 | ring->tail = hw->hw_addr + E1000_TDT(reg_idx); |
a74420e0 | 3269 | wr32(E1000_TDH(reg_idx), 0); |
fce99e34 | 3270 | writel(0, ring->tail); |
85b430b4 AD |
3271 | |
3272 | txdctl |= IGB_TX_PTHRESH; | |
3273 | txdctl |= IGB_TX_HTHRESH << 8; | |
3274 | txdctl |= IGB_TX_WTHRESH << 16; | |
3275 | ||
3276 | txdctl |= E1000_TXDCTL_QUEUE_ENABLE; | |
3277 | wr32(E1000_TXDCTL(reg_idx), txdctl); | |
3278 | } | |
3279 | ||
3280 | /** | |
b980ac18 JK |
3281 | * igb_configure_tx - Configure transmit Unit after Reset |
3282 | * @adapter: board private structure | |
85b430b4 | 3283 | * |
b980ac18 | 3284 | * Configure the Tx unit of the MAC after a reset. |
85b430b4 AD |
3285 | **/ |
3286 | static void igb_configure_tx(struct igb_adapter *adapter) | |
3287 | { | |
3288 | int i; | |
3289 | ||
3290 | for (i = 0; i < adapter->num_tx_queues; i++) | |
3025a446 | 3291 | igb_configure_tx_ring(adapter, adapter->tx_ring[i]); |
85b430b4 AD |
3292 | } |
3293 | ||
9d5c8243 | 3294 | /** |
b980ac18 JK |
3295 | * igb_setup_rx_resources - allocate Rx resources (Descriptors) |
3296 | * @rx_ring: Rx descriptor ring (for a specific queue) to setup | |
9d5c8243 | 3297 | * |
b980ac18 | 3298 | * Returns 0 on success, negative on failure |
9d5c8243 | 3299 | **/ |
80785298 | 3300 | int igb_setup_rx_resources(struct igb_ring *rx_ring) |
9d5c8243 | 3301 | { |
59d71989 | 3302 | struct device *dev = rx_ring->dev; |
f33005a6 | 3303 | int size; |
9d5c8243 | 3304 | |
06034649 | 3305 | size = sizeof(struct igb_rx_buffer) * rx_ring->count; |
f33005a6 AD |
3306 | |
3307 | rx_ring->rx_buffer_info = vzalloc(size); | |
06034649 | 3308 | if (!rx_ring->rx_buffer_info) |
9d5c8243 | 3309 | goto err; |
9d5c8243 | 3310 | |
9d5c8243 | 3311 | /* Round up to nearest 4K */ |
f33005a6 | 3312 | rx_ring->size = rx_ring->count * sizeof(union e1000_adv_rx_desc); |
9d5c8243 AK |
3313 | rx_ring->size = ALIGN(rx_ring->size, 4096); |
3314 | ||
5536d210 AD |
3315 | rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size, |
3316 | &rx_ring->dma, GFP_KERNEL); | |
9d5c8243 AK |
3317 | if (!rx_ring->desc) |
3318 | goto err; | |
3319 | ||
cbc8e55f | 3320 | rx_ring->next_to_alloc = 0; |
9d5c8243 AK |
3321 | rx_ring->next_to_clean = 0; |
3322 | rx_ring->next_to_use = 0; | |
9d5c8243 | 3323 | |
9d5c8243 AK |
3324 | return 0; |
3325 | ||
3326 | err: | |
06034649 AD |
3327 | vfree(rx_ring->rx_buffer_info); |
3328 | rx_ring->rx_buffer_info = NULL; | |
f33005a6 | 3329 | dev_err(dev, "Unable to allocate memory for the Rx descriptor ring\n"); |
9d5c8243 AK |
3330 | return -ENOMEM; |
3331 | } | |
3332 | ||
3333 | /** | |
b980ac18 JK |
3334 | * igb_setup_all_rx_resources - wrapper to allocate Rx resources |
3335 | * (Descriptors) for all queues | |
3336 | * @adapter: board private structure | |
9d5c8243 | 3337 | * |
b980ac18 | 3338 | * Return 0 on success, negative on failure |
9d5c8243 AK |
3339 | **/ |
3340 | static int igb_setup_all_rx_resources(struct igb_adapter *adapter) | |
3341 | { | |
439705e1 | 3342 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
3343 | int i, err = 0; |
3344 | ||
3345 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
3025a446 | 3346 | err = igb_setup_rx_resources(adapter->rx_ring[i]); |
9d5c8243 | 3347 | if (err) { |
439705e1 | 3348 | dev_err(&pdev->dev, |
9d5c8243 AK |
3349 | "Allocation for Rx Queue %u failed\n", i); |
3350 | for (i--; i >= 0; i--) | |
3025a446 | 3351 | igb_free_rx_resources(adapter->rx_ring[i]); |
9d5c8243 AK |
3352 | break; |
3353 | } | |
3354 | } | |
3355 | ||
3356 | return err; | |
3357 | } | |
3358 | ||
06cf2666 | 3359 | /** |
b980ac18 JK |
3360 | * igb_setup_mrqc - configure the multiple receive queue control registers |
3361 | * @adapter: Board private structure | |
06cf2666 AD |
3362 | **/ |
3363 | static void igb_setup_mrqc(struct igb_adapter *adapter) | |
3364 | { | |
3365 | struct e1000_hw *hw = &adapter->hw; | |
3366 | u32 mrqc, rxcsum; | |
ed12cc9a | 3367 | u32 j, num_rx_queues; |
a57fe23e AD |
3368 | static const u32 rsskey[10] = { 0xDA565A6D, 0xC20E5B25, 0x3D256741, |
3369 | 0xB08FA343, 0xCB2BCAD0, 0xB4307BAE, | |
3370 | 0xA32DCB77, 0x0CF23080, 0x3BB7426A, | |
3371 | 0xFA01ACBE }; | |
06cf2666 AD |
3372 | |
3373 | /* Fill out hash function seeds */ | |
a57fe23e AD |
3374 | for (j = 0; j < 10; j++) |
3375 | wr32(E1000_RSSRK(j), rsskey[j]); | |
06cf2666 | 3376 | |
a99955fc | 3377 | num_rx_queues = adapter->rss_queues; |
06cf2666 | 3378 | |
797fd4be | 3379 | switch (hw->mac.type) { |
797fd4be AD |
3380 | case e1000_82576: |
3381 | /* 82576 supports 2 RSS queues for SR-IOV */ | |
ed12cc9a | 3382 | if (adapter->vfs_allocated_count) |
06cf2666 | 3383 | num_rx_queues = 2; |
797fd4be AD |
3384 | break; |
3385 | default: | |
3386 | break; | |
06cf2666 AD |
3387 | } |
3388 | ||
ed12cc9a LMV |
3389 | if (adapter->rss_indir_tbl_init != num_rx_queues) { |
3390 | for (j = 0; j < IGB_RETA_SIZE; j++) | |
c502ea2e CW |
3391 | adapter->rss_indir_tbl[j] = |
3392 | (j * num_rx_queues) / IGB_RETA_SIZE; | |
ed12cc9a | 3393 | adapter->rss_indir_tbl_init = num_rx_queues; |
06cf2666 | 3394 | } |
ed12cc9a | 3395 | igb_write_rss_indir_tbl(adapter); |
06cf2666 | 3396 | |
b980ac18 | 3397 | /* Disable raw packet checksumming so that RSS hash is placed in |
06cf2666 AD |
3398 | * descriptor on writeback. No need to enable TCP/UDP/IP checksum |
3399 | * offloads as they are enabled by default | |
3400 | */ | |
3401 | rxcsum = rd32(E1000_RXCSUM); | |
3402 | rxcsum |= E1000_RXCSUM_PCSD; | |
3403 | ||
3404 | if (adapter->hw.mac.type >= e1000_82576) | |
3405 | /* Enable Receive Checksum Offload for SCTP */ | |
3406 | rxcsum |= E1000_RXCSUM_CRCOFL; | |
3407 | ||
3408 | /* Don't need to set TUOFL or IPOFL, they default to 1 */ | |
3409 | wr32(E1000_RXCSUM, rxcsum); | |
f96a8a0b | 3410 | |
039454a8 AA |
3411 | /* Generate RSS hash based on packet types, TCP/UDP |
3412 | * port numbers and/or IPv4/v6 src and dst addresses | |
3413 | */ | |
f96a8a0b CW |
3414 | mrqc = E1000_MRQC_RSS_FIELD_IPV4 | |
3415 | E1000_MRQC_RSS_FIELD_IPV4_TCP | | |
3416 | E1000_MRQC_RSS_FIELD_IPV6 | | |
3417 | E1000_MRQC_RSS_FIELD_IPV6_TCP | | |
3418 | E1000_MRQC_RSS_FIELD_IPV6_TCP_EX; | |
06cf2666 | 3419 | |
039454a8 AA |
3420 | if (adapter->flags & IGB_FLAG_RSS_FIELD_IPV4_UDP) |
3421 | mrqc |= E1000_MRQC_RSS_FIELD_IPV4_UDP; | |
3422 | if (adapter->flags & IGB_FLAG_RSS_FIELD_IPV6_UDP) | |
3423 | mrqc |= E1000_MRQC_RSS_FIELD_IPV6_UDP; | |
3424 | ||
06cf2666 AD |
3425 | /* If VMDq is enabled then we set the appropriate mode for that, else |
3426 | * we default to RSS so that an RSS hash is calculated per packet even | |
b980ac18 JK |
3427 | * if we are only using one queue |
3428 | */ | |
06cf2666 AD |
3429 | if (adapter->vfs_allocated_count) { |
3430 | if (hw->mac.type > e1000_82575) { | |
3431 | /* Set the default pool for the PF's first queue */ | |
3432 | u32 vtctl = rd32(E1000_VT_CTL); | |
9005df38 | 3433 | |
06cf2666 AD |
3434 | vtctl &= ~(E1000_VT_CTL_DEFAULT_POOL_MASK | |
3435 | E1000_VT_CTL_DISABLE_DEF_POOL); | |
3436 | vtctl |= adapter->vfs_allocated_count << | |
3437 | E1000_VT_CTL_DEFAULT_POOL_SHIFT; | |
3438 | wr32(E1000_VT_CTL, vtctl); | |
3439 | } | |
a99955fc | 3440 | if (adapter->rss_queues > 1) |
f96a8a0b | 3441 | mrqc |= E1000_MRQC_ENABLE_VMDQ_RSS_2Q; |
06cf2666 | 3442 | else |
f96a8a0b | 3443 | mrqc |= E1000_MRQC_ENABLE_VMDQ; |
06cf2666 | 3444 | } else { |
f96a8a0b CW |
3445 | if (hw->mac.type != e1000_i211) |
3446 | mrqc |= E1000_MRQC_ENABLE_RSS_4Q; | |
06cf2666 AD |
3447 | } |
3448 | igb_vmm_control(adapter); | |
3449 | ||
06cf2666 AD |
3450 | wr32(E1000_MRQC, mrqc); |
3451 | } | |
3452 | ||
9d5c8243 | 3453 | /** |
b980ac18 JK |
3454 | * igb_setup_rctl - configure the receive control registers |
3455 | * @adapter: Board private structure | |
9d5c8243 | 3456 | **/ |
d7ee5b3a | 3457 | void igb_setup_rctl(struct igb_adapter *adapter) |
9d5c8243 AK |
3458 | { |
3459 | struct e1000_hw *hw = &adapter->hw; | |
3460 | u32 rctl; | |
9d5c8243 AK |
3461 | |
3462 | rctl = rd32(E1000_RCTL); | |
3463 | ||
3464 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
69d728ba | 3465 | rctl &= ~(E1000_RCTL_LBM_TCVR | E1000_RCTL_LBM_MAC); |
9d5c8243 | 3466 | |
69d728ba | 3467 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_RDMTS_HALF | |
28b0759c | 3468 | (hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT); |
9d5c8243 | 3469 | |
b980ac18 | 3470 | /* enable stripping of CRC. It's unlikely this will break BMC |
87cb7e8c AK |
3471 | * redirection as it did with e1000. Newer features require |
3472 | * that the HW strips the CRC. | |
73cd78f1 | 3473 | */ |
87cb7e8c | 3474 | rctl |= E1000_RCTL_SECRC; |
9d5c8243 | 3475 | |
559e9c49 | 3476 | /* disable store bad packets and clear size bits. */ |
ec54d7d6 | 3477 | rctl &= ~(E1000_RCTL_SBP | E1000_RCTL_SZ_256); |
9d5c8243 | 3478 | |
6ec43fe6 AD |
3479 | /* enable LPE to prevent packets larger than max_frame_size */ |
3480 | rctl |= E1000_RCTL_LPE; | |
9d5c8243 | 3481 | |
952f72a8 AD |
3482 | /* disable queue 0 to prevent tail write w/o re-config */ |
3483 | wr32(E1000_RXDCTL(0), 0); | |
9d5c8243 | 3484 | |
e1739522 AD |
3485 | /* Attention!!! For SR-IOV PF driver operations you must enable |
3486 | * queue drop for all VF and PF queues to prevent head of line blocking | |
3487 | * if an un-trusted VF does not provide descriptors to hardware. | |
3488 | */ | |
3489 | if (adapter->vfs_allocated_count) { | |
e1739522 AD |
3490 | /* set all queue drop enable bits */ |
3491 | wr32(E1000_QDE, ALL_QUEUES); | |
e1739522 AD |
3492 | } |
3493 | ||
89eaefb6 BG |
3494 | /* This is useful for sniffing bad packets. */ |
3495 | if (adapter->netdev->features & NETIF_F_RXALL) { | |
3496 | /* UPE and MPE will be handled by normal PROMISC logic | |
b980ac18 JK |
3497 | * in e1000e_set_rx_mode |
3498 | */ | |
89eaefb6 BG |
3499 | rctl |= (E1000_RCTL_SBP | /* Receive bad packets */ |
3500 | E1000_RCTL_BAM | /* RX All Bcast Pkts */ | |
3501 | E1000_RCTL_PMCF); /* RX All MAC Ctrl Pkts */ | |
3502 | ||
3503 | rctl &= ~(E1000_RCTL_VFE | /* Disable VLAN filter */ | |
3504 | E1000_RCTL_DPF | /* Allow filtered pause */ | |
3505 | E1000_RCTL_CFIEN); /* Dis VLAN CFIEN Filter */ | |
3506 | /* Do not mess with E1000_CTRL_VME, it affects transmit as well, | |
3507 | * and that breaks VLANs. | |
3508 | */ | |
3509 | } | |
3510 | ||
9d5c8243 AK |
3511 | wr32(E1000_RCTL, rctl); |
3512 | } | |
3513 | ||
7d5753f0 | 3514 | static inline int igb_set_vf_rlpml(struct igb_adapter *adapter, int size, |
9005df38 | 3515 | int vfn) |
7d5753f0 AD |
3516 | { |
3517 | struct e1000_hw *hw = &adapter->hw; | |
3518 | u32 vmolr; | |
3519 | ||
3520 | /* if it isn't the PF check to see if VFs are enabled and | |
b980ac18 JK |
3521 | * increase the size to support vlan tags |
3522 | */ | |
7d5753f0 AD |
3523 | if (vfn < adapter->vfs_allocated_count && |
3524 | adapter->vf_data[vfn].vlans_enabled) | |
3525 | size += VLAN_TAG_SIZE; | |
3526 | ||
3527 | vmolr = rd32(E1000_VMOLR(vfn)); | |
3528 | vmolr &= ~E1000_VMOLR_RLPML_MASK; | |
3529 | vmolr |= size | E1000_VMOLR_LPE; | |
3530 | wr32(E1000_VMOLR(vfn), vmolr); | |
3531 | ||
3532 | return 0; | |
3533 | } | |
3534 | ||
e1739522 | 3535 | /** |
b980ac18 JK |
3536 | * igb_rlpml_set - set maximum receive packet size |
3537 | * @adapter: board private structure | |
e1739522 | 3538 | * |
b980ac18 | 3539 | * Configure maximum receivable packet size. |
e1739522 AD |
3540 | **/ |
3541 | static void igb_rlpml_set(struct igb_adapter *adapter) | |
3542 | { | |
153285f9 | 3543 | u32 max_frame_size = adapter->max_frame_size; |
e1739522 AD |
3544 | struct e1000_hw *hw = &adapter->hw; |
3545 | u16 pf_id = adapter->vfs_allocated_count; | |
3546 | ||
e1739522 AD |
3547 | if (pf_id) { |
3548 | igb_set_vf_rlpml(adapter, max_frame_size, pf_id); | |
b980ac18 | 3549 | /* If we're in VMDQ or SR-IOV mode, then set global RLPML |
153285f9 AD |
3550 | * to our max jumbo frame size, in case we need to enable |
3551 | * jumbo frames on one of the rings later. | |
3552 | * This will not pass over-length frames into the default | |
3553 | * queue because it's gated by the VMOLR.RLPML. | |
3554 | */ | |
7d5753f0 | 3555 | max_frame_size = MAX_JUMBO_FRAME_SIZE; |
e1739522 AD |
3556 | } |
3557 | ||
3558 | wr32(E1000_RLPML, max_frame_size); | |
3559 | } | |
3560 | ||
8151d294 WM |
3561 | static inline void igb_set_vmolr(struct igb_adapter *adapter, |
3562 | int vfn, bool aupe) | |
7d5753f0 AD |
3563 | { |
3564 | struct e1000_hw *hw = &adapter->hw; | |
3565 | u32 vmolr; | |
3566 | ||
b980ac18 | 3567 | /* This register exists only on 82576 and newer so if we are older then |
7d5753f0 AD |
3568 | * we should exit and do nothing |
3569 | */ | |
3570 | if (hw->mac.type < e1000_82576) | |
3571 | return; | |
3572 | ||
3573 | vmolr = rd32(E1000_VMOLR(vfn)); | |
b980ac18 | 3574 | vmolr |= E1000_VMOLR_STRVLAN; /* Strip vlan tags */ |
dc1edc67 SA |
3575 | if (hw->mac.type == e1000_i350) { |
3576 | u32 dvmolr; | |
3577 | ||
3578 | dvmolr = rd32(E1000_DVMOLR(vfn)); | |
3579 | dvmolr |= E1000_DVMOLR_STRVLAN; | |
3580 | wr32(E1000_DVMOLR(vfn), dvmolr); | |
3581 | } | |
8151d294 | 3582 | if (aupe) |
b980ac18 | 3583 | vmolr |= E1000_VMOLR_AUPE; /* Accept untagged packets */ |
8151d294 WM |
3584 | else |
3585 | vmolr &= ~(E1000_VMOLR_AUPE); /* Tagged packets ONLY */ | |
7d5753f0 AD |
3586 | |
3587 | /* clear all bits that might not be set */ | |
3588 | vmolr &= ~(E1000_VMOLR_BAM | E1000_VMOLR_RSSE); | |
3589 | ||
a99955fc | 3590 | if (adapter->rss_queues > 1 && vfn == adapter->vfs_allocated_count) |
7d5753f0 | 3591 | vmolr |= E1000_VMOLR_RSSE; /* enable RSS */ |
b980ac18 | 3592 | /* for VMDq only allow the VFs and pool 0 to accept broadcast and |
7d5753f0 AD |
3593 | * multicast packets |
3594 | */ | |
3595 | if (vfn <= adapter->vfs_allocated_count) | |
b980ac18 | 3596 | vmolr |= E1000_VMOLR_BAM; /* Accept broadcast */ |
7d5753f0 AD |
3597 | |
3598 | wr32(E1000_VMOLR(vfn), vmolr); | |
3599 | } | |
3600 | ||
85b430b4 | 3601 | /** |
b980ac18 JK |
3602 | * igb_configure_rx_ring - Configure a receive ring after Reset |
3603 | * @adapter: board private structure | |
3604 | * @ring: receive ring to be configured | |
85b430b4 | 3605 | * |
b980ac18 | 3606 | * Configure the Rx unit of the MAC after a reset. |
85b430b4 | 3607 | **/ |
d7ee5b3a | 3608 | void igb_configure_rx_ring(struct igb_adapter *adapter, |
b980ac18 | 3609 | struct igb_ring *ring) |
85b430b4 AD |
3610 | { |
3611 | struct e1000_hw *hw = &adapter->hw; | |
3612 | u64 rdba = ring->dma; | |
3613 | int reg_idx = ring->reg_idx; | |
a74420e0 | 3614 | u32 srrctl = 0, rxdctl = 0; |
85b430b4 AD |
3615 | |
3616 | /* disable the queue */ | |
a74420e0 | 3617 | wr32(E1000_RXDCTL(reg_idx), 0); |
85b430b4 AD |
3618 | |
3619 | /* Set DMA base address registers */ | |
3620 | wr32(E1000_RDBAL(reg_idx), | |
3621 | rdba & 0x00000000ffffffffULL); | |
3622 | wr32(E1000_RDBAH(reg_idx), rdba >> 32); | |
3623 | wr32(E1000_RDLEN(reg_idx), | |
b980ac18 | 3624 | ring->count * sizeof(union e1000_adv_rx_desc)); |
85b430b4 AD |
3625 | |
3626 | /* initialize head and tail */ | |
fce99e34 | 3627 | ring->tail = hw->hw_addr + E1000_RDT(reg_idx); |
a74420e0 | 3628 | wr32(E1000_RDH(reg_idx), 0); |
fce99e34 | 3629 | writel(0, ring->tail); |
85b430b4 | 3630 | |
952f72a8 | 3631 | /* set descriptor configuration */ |
44390ca6 | 3632 | srrctl = IGB_RX_HDR_LEN << E1000_SRRCTL_BSIZEHDRSIZE_SHIFT; |
de78d1f9 | 3633 | srrctl |= IGB_RX_BUFSZ >> E1000_SRRCTL_BSIZEPKT_SHIFT; |
1a1c225b | 3634 | srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF; |
06218a8d | 3635 | if (hw->mac.type >= e1000_82580) |
757b77e2 | 3636 | srrctl |= E1000_SRRCTL_TIMESTAMP; |
e6bdb6fe NN |
3637 | /* Only set Drop Enable if we are supporting multiple queues */ |
3638 | if (adapter->vfs_allocated_count || adapter->num_rx_queues > 1) | |
3639 | srrctl |= E1000_SRRCTL_DROP_EN; | |
952f72a8 AD |
3640 | |
3641 | wr32(E1000_SRRCTL(reg_idx), srrctl); | |
3642 | ||
7d5753f0 | 3643 | /* set filtering for VMDQ pools */ |
8151d294 | 3644 | igb_set_vmolr(adapter, reg_idx & 0x7, true); |
7d5753f0 | 3645 | |
85b430b4 AD |
3646 | rxdctl |= IGB_RX_PTHRESH; |
3647 | rxdctl |= IGB_RX_HTHRESH << 8; | |
3648 | rxdctl |= IGB_RX_WTHRESH << 16; | |
a74420e0 AD |
3649 | |
3650 | /* enable receive descriptor fetching */ | |
3651 | rxdctl |= E1000_RXDCTL_QUEUE_ENABLE; | |
85b430b4 AD |
3652 | wr32(E1000_RXDCTL(reg_idx), rxdctl); |
3653 | } | |
3654 | ||
9d5c8243 | 3655 | /** |
b980ac18 JK |
3656 | * igb_configure_rx - Configure receive Unit after Reset |
3657 | * @adapter: board private structure | |
9d5c8243 | 3658 | * |
b980ac18 | 3659 | * Configure the Rx unit of the MAC after a reset. |
9d5c8243 AK |
3660 | **/ |
3661 | static void igb_configure_rx(struct igb_adapter *adapter) | |
3662 | { | |
9107584e | 3663 | int i; |
9d5c8243 | 3664 | |
68d480c4 AD |
3665 | /* set UTA to appropriate mode */ |
3666 | igb_set_uta(adapter); | |
3667 | ||
26ad9178 AD |
3668 | /* set the correct pool for the PF default MAC address in entry 0 */ |
3669 | igb_rar_set_qsel(adapter, adapter->hw.mac.addr, 0, | |
b980ac18 | 3670 | adapter->vfs_allocated_count); |
26ad9178 | 3671 | |
06cf2666 | 3672 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
b980ac18 JK |
3673 | * the Base and Length of the Rx Descriptor Ring |
3674 | */ | |
f9d40f6a AD |
3675 | for (i = 0; i < adapter->num_rx_queues; i++) |
3676 | igb_configure_rx_ring(adapter, adapter->rx_ring[i]); | |
9d5c8243 AK |
3677 | } |
3678 | ||
3679 | /** | |
b980ac18 JK |
3680 | * igb_free_tx_resources - Free Tx Resources per Queue |
3681 | * @tx_ring: Tx descriptor ring for a specific queue | |
9d5c8243 | 3682 | * |
b980ac18 | 3683 | * Free all transmit software resources |
9d5c8243 | 3684 | **/ |
68fd9910 | 3685 | void igb_free_tx_resources(struct igb_ring *tx_ring) |
9d5c8243 | 3686 | { |
3b644cf6 | 3687 | igb_clean_tx_ring(tx_ring); |
9d5c8243 | 3688 | |
06034649 AD |
3689 | vfree(tx_ring->tx_buffer_info); |
3690 | tx_ring->tx_buffer_info = NULL; | |
9d5c8243 | 3691 | |
439705e1 AD |
3692 | /* if not set, then don't free */ |
3693 | if (!tx_ring->desc) | |
3694 | return; | |
3695 | ||
59d71989 AD |
3696 | dma_free_coherent(tx_ring->dev, tx_ring->size, |
3697 | tx_ring->desc, tx_ring->dma); | |
9d5c8243 AK |
3698 | |
3699 | tx_ring->desc = NULL; | |
3700 | } | |
3701 | ||
3702 | /** | |
b980ac18 JK |
3703 | * igb_free_all_tx_resources - Free Tx Resources for All Queues |
3704 | * @adapter: board private structure | |
9d5c8243 | 3705 | * |
b980ac18 | 3706 | * Free all transmit software resources |
9d5c8243 AK |
3707 | **/ |
3708 | static void igb_free_all_tx_resources(struct igb_adapter *adapter) | |
3709 | { | |
3710 | int i; | |
3711 | ||
3712 | for (i = 0; i < adapter->num_tx_queues; i++) | |
3025a446 | 3713 | igb_free_tx_resources(adapter->tx_ring[i]); |
9d5c8243 AK |
3714 | } |
3715 | ||
ebe42d16 AD |
3716 | void igb_unmap_and_free_tx_resource(struct igb_ring *ring, |
3717 | struct igb_tx_buffer *tx_buffer) | |
3718 | { | |
3719 | if (tx_buffer->skb) { | |
3720 | dev_kfree_skb_any(tx_buffer->skb); | |
c9f14bf3 | 3721 | if (dma_unmap_len(tx_buffer, len)) |
ebe42d16 | 3722 | dma_unmap_single(ring->dev, |
c9f14bf3 AD |
3723 | dma_unmap_addr(tx_buffer, dma), |
3724 | dma_unmap_len(tx_buffer, len), | |
ebe42d16 | 3725 | DMA_TO_DEVICE); |
c9f14bf3 | 3726 | } else if (dma_unmap_len(tx_buffer, len)) { |
ebe42d16 | 3727 | dma_unmap_page(ring->dev, |
c9f14bf3 AD |
3728 | dma_unmap_addr(tx_buffer, dma), |
3729 | dma_unmap_len(tx_buffer, len), | |
ebe42d16 AD |
3730 | DMA_TO_DEVICE); |
3731 | } | |
3732 | tx_buffer->next_to_watch = NULL; | |
3733 | tx_buffer->skb = NULL; | |
c9f14bf3 | 3734 | dma_unmap_len_set(tx_buffer, len, 0); |
ebe42d16 | 3735 | /* buffer_info must be completely set up in the transmit path */ |
9d5c8243 AK |
3736 | } |
3737 | ||
3738 | /** | |
b980ac18 JK |
3739 | * igb_clean_tx_ring - Free Tx Buffers |
3740 | * @tx_ring: ring to be cleaned | |
9d5c8243 | 3741 | **/ |
3b644cf6 | 3742 | static void igb_clean_tx_ring(struct igb_ring *tx_ring) |
9d5c8243 | 3743 | { |
06034649 | 3744 | struct igb_tx_buffer *buffer_info; |
9d5c8243 | 3745 | unsigned long size; |
6ad4edfc | 3746 | u16 i; |
9d5c8243 | 3747 | |
06034649 | 3748 | if (!tx_ring->tx_buffer_info) |
9d5c8243 AK |
3749 | return; |
3750 | /* Free all the Tx ring sk_buffs */ | |
3751 | ||
3752 | for (i = 0; i < tx_ring->count; i++) { | |
06034649 | 3753 | buffer_info = &tx_ring->tx_buffer_info[i]; |
80785298 | 3754 | igb_unmap_and_free_tx_resource(tx_ring, buffer_info); |
9d5c8243 AK |
3755 | } |
3756 | ||
dad8a3b3 JF |
3757 | netdev_tx_reset_queue(txring_txq(tx_ring)); |
3758 | ||
06034649 AD |
3759 | size = sizeof(struct igb_tx_buffer) * tx_ring->count; |
3760 | memset(tx_ring->tx_buffer_info, 0, size); | |
9d5c8243 AK |
3761 | |
3762 | /* Zero out the descriptor ring */ | |
9d5c8243 AK |
3763 | memset(tx_ring->desc, 0, tx_ring->size); |
3764 | ||
3765 | tx_ring->next_to_use = 0; | |
3766 | tx_ring->next_to_clean = 0; | |
9d5c8243 AK |
3767 | } |
3768 | ||
3769 | /** | |
b980ac18 JK |
3770 | * igb_clean_all_tx_rings - Free Tx Buffers for all queues |
3771 | * @adapter: board private structure | |
9d5c8243 AK |
3772 | **/ |
3773 | static void igb_clean_all_tx_rings(struct igb_adapter *adapter) | |
3774 | { | |
3775 | int i; | |
3776 | ||
3777 | for (i = 0; i < adapter->num_tx_queues; i++) | |
3025a446 | 3778 | igb_clean_tx_ring(adapter->tx_ring[i]); |
9d5c8243 AK |
3779 | } |
3780 | ||
3781 | /** | |
b980ac18 JK |
3782 | * igb_free_rx_resources - Free Rx Resources |
3783 | * @rx_ring: ring to clean the resources from | |
9d5c8243 | 3784 | * |
b980ac18 | 3785 | * Free all receive software resources |
9d5c8243 | 3786 | **/ |
68fd9910 | 3787 | void igb_free_rx_resources(struct igb_ring *rx_ring) |
9d5c8243 | 3788 | { |
3b644cf6 | 3789 | igb_clean_rx_ring(rx_ring); |
9d5c8243 | 3790 | |
06034649 AD |
3791 | vfree(rx_ring->rx_buffer_info); |
3792 | rx_ring->rx_buffer_info = NULL; | |
9d5c8243 | 3793 | |
439705e1 AD |
3794 | /* if not set, then don't free */ |
3795 | if (!rx_ring->desc) | |
3796 | return; | |
3797 | ||
59d71989 AD |
3798 | dma_free_coherent(rx_ring->dev, rx_ring->size, |
3799 | rx_ring->desc, rx_ring->dma); | |
9d5c8243 AK |
3800 | |
3801 | rx_ring->desc = NULL; | |
3802 | } | |
3803 | ||
3804 | /** | |
b980ac18 JK |
3805 | * igb_free_all_rx_resources - Free Rx Resources for All Queues |
3806 | * @adapter: board private structure | |
9d5c8243 | 3807 | * |
b980ac18 | 3808 | * Free all receive software resources |
9d5c8243 AK |
3809 | **/ |
3810 | static void igb_free_all_rx_resources(struct igb_adapter *adapter) | |
3811 | { | |
3812 | int i; | |
3813 | ||
3814 | for (i = 0; i < adapter->num_rx_queues; i++) | |
3025a446 | 3815 | igb_free_rx_resources(adapter->rx_ring[i]); |
9d5c8243 AK |
3816 | } |
3817 | ||
3818 | /** | |
b980ac18 JK |
3819 | * igb_clean_rx_ring - Free Rx Buffers per Queue |
3820 | * @rx_ring: ring to free buffers from | |
9d5c8243 | 3821 | **/ |
3b644cf6 | 3822 | static void igb_clean_rx_ring(struct igb_ring *rx_ring) |
9d5c8243 | 3823 | { |
9d5c8243 | 3824 | unsigned long size; |
c023cd88 | 3825 | u16 i; |
9d5c8243 | 3826 | |
1a1c225b AD |
3827 | if (rx_ring->skb) |
3828 | dev_kfree_skb(rx_ring->skb); | |
3829 | rx_ring->skb = NULL; | |
3830 | ||
06034649 | 3831 | if (!rx_ring->rx_buffer_info) |
9d5c8243 | 3832 | return; |
439705e1 | 3833 | |
9d5c8243 AK |
3834 | /* Free all the Rx ring sk_buffs */ |
3835 | for (i = 0; i < rx_ring->count; i++) { | |
06034649 | 3836 | struct igb_rx_buffer *buffer_info = &rx_ring->rx_buffer_info[i]; |
9d5c8243 | 3837 | |
cbc8e55f AD |
3838 | if (!buffer_info->page) |
3839 | continue; | |
3840 | ||
3841 | dma_unmap_page(rx_ring->dev, | |
3842 | buffer_info->dma, | |
3843 | PAGE_SIZE, | |
3844 | DMA_FROM_DEVICE); | |
3845 | __free_page(buffer_info->page); | |
3846 | ||
1a1c225b | 3847 | buffer_info->page = NULL; |
9d5c8243 AK |
3848 | } |
3849 | ||
06034649 AD |
3850 | size = sizeof(struct igb_rx_buffer) * rx_ring->count; |
3851 | memset(rx_ring->rx_buffer_info, 0, size); | |
9d5c8243 AK |
3852 | |
3853 | /* Zero out the descriptor ring */ | |
3854 | memset(rx_ring->desc, 0, rx_ring->size); | |
3855 | ||
cbc8e55f | 3856 | rx_ring->next_to_alloc = 0; |
9d5c8243 AK |
3857 | rx_ring->next_to_clean = 0; |
3858 | rx_ring->next_to_use = 0; | |
9d5c8243 AK |
3859 | } |
3860 | ||
3861 | /** | |
b980ac18 JK |
3862 | * igb_clean_all_rx_rings - Free Rx Buffers for all queues |
3863 | * @adapter: board private structure | |
9d5c8243 AK |
3864 | **/ |
3865 | static void igb_clean_all_rx_rings(struct igb_adapter *adapter) | |
3866 | { | |
3867 | int i; | |
3868 | ||
3869 | for (i = 0; i < adapter->num_rx_queues; i++) | |
3025a446 | 3870 | igb_clean_rx_ring(adapter->rx_ring[i]); |
9d5c8243 AK |
3871 | } |
3872 | ||
3873 | /** | |
b980ac18 JK |
3874 | * igb_set_mac - Change the Ethernet Address of the NIC |
3875 | * @netdev: network interface device structure | |
3876 | * @p: pointer to an address structure | |
9d5c8243 | 3877 | * |
b980ac18 | 3878 | * Returns 0 on success, negative on failure |
9d5c8243 AK |
3879 | **/ |
3880 | static int igb_set_mac(struct net_device *netdev, void *p) | |
3881 | { | |
3882 | struct igb_adapter *adapter = netdev_priv(netdev); | |
28b0759c | 3883 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 AK |
3884 | struct sockaddr *addr = p; |
3885 | ||
3886 | if (!is_valid_ether_addr(addr->sa_data)) | |
3887 | return -EADDRNOTAVAIL; | |
3888 | ||
3889 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
28b0759c | 3890 | memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); |
9d5c8243 | 3891 | |
26ad9178 AD |
3892 | /* set the correct pool for the new PF MAC address in entry 0 */ |
3893 | igb_rar_set_qsel(adapter, hw->mac.addr, 0, | |
b980ac18 | 3894 | adapter->vfs_allocated_count); |
e1739522 | 3895 | |
9d5c8243 AK |
3896 | return 0; |
3897 | } | |
3898 | ||
3899 | /** | |
b980ac18 JK |
3900 | * igb_write_mc_addr_list - write multicast addresses to MTA |
3901 | * @netdev: network interface device structure | |
9d5c8243 | 3902 | * |
b980ac18 JK |
3903 | * Writes multicast address list to the MTA hash table. |
3904 | * Returns: -ENOMEM on failure | |
3905 | * 0 on no addresses written | |
3906 | * X on writing X addresses to MTA | |
9d5c8243 | 3907 | **/ |
68d480c4 | 3908 | static int igb_write_mc_addr_list(struct net_device *netdev) |
9d5c8243 AK |
3909 | { |
3910 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3911 | struct e1000_hw *hw = &adapter->hw; | |
22bedad3 | 3912 | struct netdev_hw_addr *ha; |
68d480c4 | 3913 | u8 *mta_list; |
9d5c8243 AK |
3914 | int i; |
3915 | ||
4cd24eaf | 3916 | if (netdev_mc_empty(netdev)) { |
68d480c4 AD |
3917 | /* nothing to program, so clear mc list */ |
3918 | igb_update_mc_addr_list(hw, NULL, 0); | |
3919 | igb_restore_vf_multicasts(adapter); | |
3920 | return 0; | |
3921 | } | |
9d5c8243 | 3922 | |
4cd24eaf | 3923 | mta_list = kzalloc(netdev_mc_count(netdev) * 6, GFP_ATOMIC); |
68d480c4 AD |
3924 | if (!mta_list) |
3925 | return -ENOMEM; | |
ff41f8dc | 3926 | |
68d480c4 | 3927 | /* The shared function expects a packed array of only addresses. */ |
48e2f183 | 3928 | i = 0; |
22bedad3 JP |
3929 | netdev_for_each_mc_addr(ha, netdev) |
3930 | memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN); | |
68d480c4 | 3931 | |
68d480c4 AD |
3932 | igb_update_mc_addr_list(hw, mta_list, i); |
3933 | kfree(mta_list); | |
3934 | ||
4cd24eaf | 3935 | return netdev_mc_count(netdev); |
68d480c4 AD |
3936 | } |
3937 | ||
3938 | /** | |
b980ac18 JK |
3939 | * igb_write_uc_addr_list - write unicast addresses to RAR table |
3940 | * @netdev: network interface device structure | |
68d480c4 | 3941 | * |
b980ac18 JK |
3942 | * Writes unicast address list to the RAR table. |
3943 | * Returns: -ENOMEM on failure/insufficient address space | |
3944 | * 0 on no addresses written | |
3945 | * X on writing X addresses to the RAR table | |
68d480c4 AD |
3946 | **/ |
3947 | static int igb_write_uc_addr_list(struct net_device *netdev) | |
3948 | { | |
3949 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3950 | struct e1000_hw *hw = &adapter->hw; | |
3951 | unsigned int vfn = adapter->vfs_allocated_count; | |
3952 | unsigned int rar_entries = hw->mac.rar_entry_count - (vfn + 1); | |
3953 | int count = 0; | |
3954 | ||
3955 | /* return ENOMEM indicating insufficient memory for addresses */ | |
32e7bfc4 | 3956 | if (netdev_uc_count(netdev) > rar_entries) |
68d480c4 | 3957 | return -ENOMEM; |
9d5c8243 | 3958 | |
32e7bfc4 | 3959 | if (!netdev_uc_empty(netdev) && rar_entries) { |
ff41f8dc | 3960 | struct netdev_hw_addr *ha; |
32e7bfc4 JP |
3961 | |
3962 | netdev_for_each_uc_addr(ha, netdev) { | |
ff41f8dc AD |
3963 | if (!rar_entries) |
3964 | break; | |
26ad9178 | 3965 | igb_rar_set_qsel(adapter, ha->addr, |
b980ac18 JK |
3966 | rar_entries--, |
3967 | vfn); | |
68d480c4 | 3968 | count++; |
ff41f8dc AD |
3969 | } |
3970 | } | |
3971 | /* write the addresses in reverse order to avoid write combining */ | |
3972 | for (; rar_entries > 0 ; rar_entries--) { | |
3973 | wr32(E1000_RAH(rar_entries), 0); | |
3974 | wr32(E1000_RAL(rar_entries), 0); | |
3975 | } | |
3976 | wrfl(); | |
3977 | ||
68d480c4 AD |
3978 | return count; |
3979 | } | |
3980 | ||
3981 | /** | |
b980ac18 JK |
3982 | * igb_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set |
3983 | * @netdev: network interface device structure | |
68d480c4 | 3984 | * |
b980ac18 JK |
3985 | * The set_rx_mode entry point is called whenever the unicast or multicast |
3986 | * address lists or the network interface flags are updated. This routine is | |
3987 | * responsible for configuring the hardware for proper unicast, multicast, | |
3988 | * promiscuous mode, and all-multi behavior. | |
68d480c4 AD |
3989 | **/ |
3990 | static void igb_set_rx_mode(struct net_device *netdev) | |
3991 | { | |
3992 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3993 | struct e1000_hw *hw = &adapter->hw; | |
3994 | unsigned int vfn = adapter->vfs_allocated_count; | |
3995 | u32 rctl, vmolr = 0; | |
3996 | int count; | |
3997 | ||
3998 | /* Check for Promiscuous and All Multicast modes */ | |
3999 | rctl = rd32(E1000_RCTL); | |
4000 | ||
4001 | /* clear the effected bits */ | |
4002 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE | E1000_RCTL_VFE); | |
4003 | ||
4004 | if (netdev->flags & IFF_PROMISC) { | |
6f3dc319 | 4005 | /* retain VLAN HW filtering if in VT mode */ |
7e44892c | 4006 | if (adapter->vfs_allocated_count) |
6f3dc319 | 4007 | rctl |= E1000_RCTL_VFE; |
68d480c4 AD |
4008 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
4009 | vmolr |= (E1000_VMOLR_ROPE | E1000_VMOLR_MPME); | |
4010 | } else { | |
4011 | if (netdev->flags & IFF_ALLMULTI) { | |
4012 | rctl |= E1000_RCTL_MPE; | |
4013 | vmolr |= E1000_VMOLR_MPME; | |
4014 | } else { | |
b980ac18 | 4015 | /* Write addresses to the MTA, if the attempt fails |
25985edc | 4016 | * then we should just turn on promiscuous mode so |
68d480c4 AD |
4017 | * that we can at least receive multicast traffic |
4018 | */ | |
4019 | count = igb_write_mc_addr_list(netdev); | |
4020 | if (count < 0) { | |
4021 | rctl |= E1000_RCTL_MPE; | |
4022 | vmolr |= E1000_VMOLR_MPME; | |
4023 | } else if (count) { | |
4024 | vmolr |= E1000_VMOLR_ROMPE; | |
4025 | } | |
4026 | } | |
b980ac18 | 4027 | /* Write addresses to available RAR registers, if there is not |
68d480c4 | 4028 | * sufficient space to store all the addresses then enable |
25985edc | 4029 | * unicast promiscuous mode |
68d480c4 AD |
4030 | */ |
4031 | count = igb_write_uc_addr_list(netdev); | |
4032 | if (count < 0) { | |
4033 | rctl |= E1000_RCTL_UPE; | |
4034 | vmolr |= E1000_VMOLR_ROPE; | |
4035 | } | |
4036 | rctl |= E1000_RCTL_VFE; | |
28fc06f5 | 4037 | } |
68d480c4 | 4038 | wr32(E1000_RCTL, rctl); |
28fc06f5 | 4039 | |
b980ac18 | 4040 | /* In order to support SR-IOV and eventually VMDq it is necessary to set |
68d480c4 AD |
4041 | * the VMOLR to enable the appropriate modes. Without this workaround |
4042 | * we will have issues with VLAN tag stripping not being done for frames | |
4043 | * that are only arriving because we are the default pool | |
4044 | */ | |
f96a8a0b | 4045 | if ((hw->mac.type < e1000_82576) || (hw->mac.type > e1000_i350)) |
28fc06f5 | 4046 | return; |
9d5c8243 | 4047 | |
68d480c4 | 4048 | vmolr |= rd32(E1000_VMOLR(vfn)) & |
b980ac18 | 4049 | ~(E1000_VMOLR_ROPE | E1000_VMOLR_MPME | E1000_VMOLR_ROMPE); |
68d480c4 | 4050 | wr32(E1000_VMOLR(vfn), vmolr); |
28fc06f5 | 4051 | igb_restore_vf_multicasts(adapter); |
9d5c8243 AK |
4052 | } |
4053 | ||
13800469 GR |
4054 | static void igb_check_wvbr(struct igb_adapter *adapter) |
4055 | { | |
4056 | struct e1000_hw *hw = &adapter->hw; | |
4057 | u32 wvbr = 0; | |
4058 | ||
4059 | switch (hw->mac.type) { | |
4060 | case e1000_82576: | |
4061 | case e1000_i350: | |
81ad807b CW |
4062 | wvbr = rd32(E1000_WVBR); |
4063 | if (!wvbr) | |
13800469 GR |
4064 | return; |
4065 | break; | |
4066 | default: | |
4067 | break; | |
4068 | } | |
4069 | ||
4070 | adapter->wvbr |= wvbr; | |
4071 | } | |
4072 | ||
4073 | #define IGB_STAGGERED_QUEUE_OFFSET 8 | |
4074 | ||
4075 | static void igb_spoof_check(struct igb_adapter *adapter) | |
4076 | { | |
4077 | int j; | |
4078 | ||
4079 | if (!adapter->wvbr) | |
4080 | return; | |
4081 | ||
9005df38 | 4082 | for (j = 0; j < adapter->vfs_allocated_count; j++) { |
13800469 GR |
4083 | if (adapter->wvbr & (1 << j) || |
4084 | adapter->wvbr & (1 << (j + IGB_STAGGERED_QUEUE_OFFSET))) { | |
4085 | dev_warn(&adapter->pdev->dev, | |
4086 | "Spoof event(s) detected on VF %d\n", j); | |
4087 | adapter->wvbr &= | |
4088 | ~((1 << j) | | |
4089 | (1 << (j + IGB_STAGGERED_QUEUE_OFFSET))); | |
4090 | } | |
4091 | } | |
4092 | } | |
4093 | ||
9d5c8243 | 4094 | /* Need to wait a few seconds after link up to get diagnostic information from |
b980ac18 JK |
4095 | * the phy |
4096 | */ | |
9d5c8243 AK |
4097 | static void igb_update_phy_info(unsigned long data) |
4098 | { | |
4099 | struct igb_adapter *adapter = (struct igb_adapter *) data; | |
f5f4cf08 | 4100 | igb_get_phy_info(&adapter->hw); |
9d5c8243 AK |
4101 | } |
4102 | ||
4d6b725e | 4103 | /** |
b980ac18 JK |
4104 | * igb_has_link - check shared code for link and determine up/down |
4105 | * @adapter: pointer to driver private info | |
4d6b725e | 4106 | **/ |
3145535a | 4107 | bool igb_has_link(struct igb_adapter *adapter) |
4d6b725e AD |
4108 | { |
4109 | struct e1000_hw *hw = &adapter->hw; | |
4110 | bool link_active = false; | |
4d6b725e AD |
4111 | |
4112 | /* get_link_status is set on LSC (link status) interrupt or | |
4113 | * rx sequence error interrupt. get_link_status will stay | |
4114 | * false until the e1000_check_for_link establishes link | |
4115 | * for copper adapters ONLY | |
4116 | */ | |
4117 | switch (hw->phy.media_type) { | |
4118 | case e1000_media_type_copper: | |
e5c3370f AA |
4119 | if (!hw->mac.get_link_status) |
4120 | return true; | |
4d6b725e | 4121 | case e1000_media_type_internal_serdes: |
e5c3370f AA |
4122 | hw->mac.ops.check_for_link(hw); |
4123 | link_active = !hw->mac.get_link_status; | |
4d6b725e AD |
4124 | break; |
4125 | default: | |
4126 | case e1000_media_type_unknown: | |
4127 | break; | |
4128 | } | |
4129 | ||
aa9b8cc4 AA |
4130 | if (((hw->mac.type == e1000_i210) || |
4131 | (hw->mac.type == e1000_i211)) && | |
4132 | (hw->phy.id == I210_I_PHY_ID)) { | |
4133 | if (!netif_carrier_ok(adapter->netdev)) { | |
4134 | adapter->flags &= ~IGB_FLAG_NEED_LINK_UPDATE; | |
4135 | } else if (!(adapter->flags & IGB_FLAG_NEED_LINK_UPDATE)) { | |
4136 | adapter->flags |= IGB_FLAG_NEED_LINK_UPDATE; | |
4137 | adapter->link_check_timeout = jiffies; | |
4138 | } | |
4139 | } | |
4140 | ||
4d6b725e AD |
4141 | return link_active; |
4142 | } | |
4143 | ||
563988dc SA |
4144 | static bool igb_thermal_sensor_event(struct e1000_hw *hw, u32 event) |
4145 | { | |
4146 | bool ret = false; | |
4147 | u32 ctrl_ext, thstat; | |
4148 | ||
f96a8a0b | 4149 | /* check for thermal sensor event on i350 copper only */ |
563988dc SA |
4150 | if (hw->mac.type == e1000_i350) { |
4151 | thstat = rd32(E1000_THSTAT); | |
4152 | ctrl_ext = rd32(E1000_CTRL_EXT); | |
4153 | ||
4154 | if ((hw->phy.media_type == e1000_media_type_copper) && | |
5c17a203 | 4155 | !(ctrl_ext & E1000_CTRL_EXT_LINK_MODE_SGMII)) |
563988dc | 4156 | ret = !!(thstat & event); |
563988dc SA |
4157 | } |
4158 | ||
4159 | return ret; | |
4160 | } | |
4161 | ||
9d5c8243 | 4162 | /** |
b980ac18 JK |
4163 | * igb_watchdog - Timer Call-back |
4164 | * @data: pointer to adapter cast into an unsigned long | |
9d5c8243 AK |
4165 | **/ |
4166 | static void igb_watchdog(unsigned long data) | |
4167 | { | |
4168 | struct igb_adapter *adapter = (struct igb_adapter *)data; | |
4169 | /* Do the rest outside of interrupt context */ | |
4170 | schedule_work(&adapter->watchdog_task); | |
4171 | } | |
4172 | ||
4173 | static void igb_watchdog_task(struct work_struct *work) | |
4174 | { | |
4175 | struct igb_adapter *adapter = container_of(work, | |
b980ac18 JK |
4176 | struct igb_adapter, |
4177 | watchdog_task); | |
9d5c8243 | 4178 | struct e1000_hw *hw = &adapter->hw; |
c0ba4778 | 4179 | struct e1000_phy_info *phy = &hw->phy; |
9d5c8243 | 4180 | struct net_device *netdev = adapter->netdev; |
563988dc | 4181 | u32 link; |
7a6ea550 | 4182 | int i; |
56cec249 | 4183 | u32 connsw; |
9d5c8243 | 4184 | |
4d6b725e | 4185 | link = igb_has_link(adapter); |
aa9b8cc4 AA |
4186 | |
4187 | if (adapter->flags & IGB_FLAG_NEED_LINK_UPDATE) { | |
4188 | if (time_after(jiffies, (adapter->link_check_timeout + HZ))) | |
4189 | adapter->flags &= ~IGB_FLAG_NEED_LINK_UPDATE; | |
4190 | else | |
4191 | link = false; | |
4192 | } | |
4193 | ||
56cec249 CW |
4194 | /* Force link down if we have fiber to swap to */ |
4195 | if (adapter->flags & IGB_FLAG_MAS_ENABLE) { | |
4196 | if (hw->phy.media_type == e1000_media_type_copper) { | |
4197 | connsw = rd32(E1000_CONNSW); | |
4198 | if (!(connsw & E1000_CONNSW_AUTOSENSE_EN)) | |
4199 | link = 0; | |
4200 | } | |
4201 | } | |
9d5c8243 | 4202 | if (link) { |
2bdfc4e2 CW |
4203 | /* Perform a reset if the media type changed. */ |
4204 | if (hw->dev_spec._82575.media_changed) { | |
4205 | hw->dev_spec._82575.media_changed = false; | |
4206 | adapter->flags |= IGB_FLAG_MEDIA_RESET; | |
4207 | igb_reset(adapter); | |
4208 | } | |
749ab2cd YZ |
4209 | /* Cancel scheduled suspend requests. */ |
4210 | pm_runtime_resume(netdev->dev.parent); | |
4211 | ||
9d5c8243 AK |
4212 | if (!netif_carrier_ok(netdev)) { |
4213 | u32 ctrl; | |
9005df38 | 4214 | |
330a6d6a | 4215 | hw->mac.ops.get_speed_and_duplex(hw, |
b980ac18 JK |
4216 | &adapter->link_speed, |
4217 | &adapter->link_duplex); | |
9d5c8243 AK |
4218 | |
4219 | ctrl = rd32(E1000_CTRL); | |
527d47c1 | 4220 | /* Links status message must follow this format */ |
c75c4edf CW |
4221 | netdev_info(netdev, |
4222 | "igb: %s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n", | |
559e9c49 AD |
4223 | netdev->name, |
4224 | adapter->link_speed, | |
4225 | adapter->link_duplex == FULL_DUPLEX ? | |
876d2d6f JK |
4226 | "Full" : "Half", |
4227 | (ctrl & E1000_CTRL_TFCE) && | |
4228 | (ctrl & E1000_CTRL_RFCE) ? "RX/TX" : | |
4229 | (ctrl & E1000_CTRL_RFCE) ? "RX" : | |
4230 | (ctrl & E1000_CTRL_TFCE) ? "TX" : "None"); | |
9d5c8243 | 4231 | |
f4c01e96 CW |
4232 | /* disable EEE if enabled */ |
4233 | if ((adapter->flags & IGB_FLAG_EEE) && | |
4234 | (adapter->link_duplex == HALF_DUPLEX)) { | |
4235 | dev_info(&adapter->pdev->dev, | |
4236 | "EEE Disabled: unsupported at half duplex. Re-enable using ethtool when at full duplex.\n"); | |
4237 | adapter->hw.dev_spec._82575.eee_disable = true; | |
4238 | adapter->flags &= ~IGB_FLAG_EEE; | |
4239 | } | |
4240 | ||
c0ba4778 KS |
4241 | /* check if SmartSpeed worked */ |
4242 | igb_check_downshift(hw); | |
4243 | if (phy->speed_downgraded) | |
4244 | netdev_warn(netdev, "Link Speed was downgraded by SmartSpeed\n"); | |
4245 | ||
563988dc | 4246 | /* check for thermal sensor event */ |
876d2d6f | 4247 | if (igb_thermal_sensor_event(hw, |
d34a15ab | 4248 | E1000_THSTAT_LINK_THROTTLE)) |
c75c4edf | 4249 | netdev_info(netdev, "The network adapter link speed was downshifted because it overheated\n"); |
563988dc | 4250 | |
d07f3e37 | 4251 | /* adjust timeout factor according to speed/duplex */ |
9d5c8243 AK |
4252 | adapter->tx_timeout_factor = 1; |
4253 | switch (adapter->link_speed) { | |
4254 | case SPEED_10: | |
9d5c8243 AK |
4255 | adapter->tx_timeout_factor = 14; |
4256 | break; | |
4257 | case SPEED_100: | |
9d5c8243 AK |
4258 | /* maybe add some timeout factor ? */ |
4259 | break; | |
4260 | } | |
4261 | ||
4262 | netif_carrier_on(netdev); | |
9d5c8243 | 4263 | |
4ae196df | 4264 | igb_ping_all_vfs(adapter); |
17dc566c | 4265 | igb_check_vf_rate_limit(adapter); |
4ae196df | 4266 | |
4b1a9877 | 4267 | /* link state has changed, schedule phy info update */ |
9d5c8243 AK |
4268 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
4269 | mod_timer(&adapter->phy_info_timer, | |
4270 | round_jiffies(jiffies + 2 * HZ)); | |
4271 | } | |
4272 | } else { | |
4273 | if (netif_carrier_ok(netdev)) { | |
4274 | adapter->link_speed = 0; | |
4275 | adapter->link_duplex = 0; | |
563988dc SA |
4276 | |
4277 | /* check for thermal sensor event */ | |
876d2d6f JK |
4278 | if (igb_thermal_sensor_event(hw, |
4279 | E1000_THSTAT_PWR_DOWN)) { | |
c75c4edf | 4280 | netdev_err(netdev, "The network adapter was stopped because it overheated\n"); |
7ef5ed1c | 4281 | } |
563988dc | 4282 | |
527d47c1 | 4283 | /* Links status message must follow this format */ |
c75c4edf | 4284 | netdev_info(netdev, "igb: %s NIC Link is Down\n", |
527d47c1 | 4285 | netdev->name); |
9d5c8243 | 4286 | netif_carrier_off(netdev); |
4b1a9877 | 4287 | |
4ae196df AD |
4288 | igb_ping_all_vfs(adapter); |
4289 | ||
4b1a9877 | 4290 | /* link state has changed, schedule phy info update */ |
9d5c8243 AK |
4291 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
4292 | mod_timer(&adapter->phy_info_timer, | |
4293 | round_jiffies(jiffies + 2 * HZ)); | |
749ab2cd | 4294 | |
56cec249 CW |
4295 | /* link is down, time to check for alternate media */ |
4296 | if (adapter->flags & IGB_FLAG_MAS_ENABLE) { | |
4297 | igb_check_swap_media(adapter); | |
4298 | if (adapter->flags & IGB_FLAG_MEDIA_RESET) { | |
4299 | schedule_work(&adapter->reset_task); | |
4300 | /* return immediately */ | |
4301 | return; | |
4302 | } | |
4303 | } | |
749ab2cd YZ |
4304 | pm_schedule_suspend(netdev->dev.parent, |
4305 | MSEC_PER_SEC * 5); | |
56cec249 CW |
4306 | |
4307 | /* also check for alternate media here */ | |
4308 | } else if (!netif_carrier_ok(netdev) && | |
4309 | (adapter->flags & IGB_FLAG_MAS_ENABLE)) { | |
4310 | igb_check_swap_media(adapter); | |
4311 | if (adapter->flags & IGB_FLAG_MEDIA_RESET) { | |
4312 | schedule_work(&adapter->reset_task); | |
4313 | /* return immediately */ | |
4314 | return; | |
4315 | } | |
9d5c8243 AK |
4316 | } |
4317 | } | |
4318 | ||
12dcd86b ED |
4319 | spin_lock(&adapter->stats64_lock); |
4320 | igb_update_stats(adapter, &adapter->stats64); | |
4321 | spin_unlock(&adapter->stats64_lock); | |
9d5c8243 | 4322 | |
dbabb065 | 4323 | for (i = 0; i < adapter->num_tx_queues; i++) { |
3025a446 | 4324 | struct igb_ring *tx_ring = adapter->tx_ring[i]; |
dbabb065 | 4325 | if (!netif_carrier_ok(netdev)) { |
9d5c8243 AK |
4326 | /* We've lost link, so the controller stops DMA, |
4327 | * but we've got queued Tx work that's never going | |
4328 | * to get done, so reset controller to flush Tx. | |
b980ac18 JK |
4329 | * (Do the reset outside of interrupt context). |
4330 | */ | |
dbabb065 AD |
4331 | if (igb_desc_unused(tx_ring) + 1 < tx_ring->count) { |
4332 | adapter->tx_timeout_count++; | |
4333 | schedule_work(&adapter->reset_task); | |
4334 | /* return immediately since reset is imminent */ | |
4335 | return; | |
4336 | } | |
9d5c8243 | 4337 | } |
9d5c8243 | 4338 | |
dbabb065 | 4339 | /* Force detection of hung controller every watchdog period */ |
6d095fa8 | 4340 | set_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags); |
dbabb065 | 4341 | } |
f7ba205e | 4342 | |
b980ac18 | 4343 | /* Cause software interrupt to ensure Rx ring is cleaned */ |
cd14ef54 | 4344 | if (adapter->flags & IGB_FLAG_HAS_MSIX) { |
047e0030 | 4345 | u32 eics = 0; |
9005df38 | 4346 | |
0d1ae7f4 AD |
4347 | for (i = 0; i < adapter->num_q_vectors; i++) |
4348 | eics |= adapter->q_vector[i]->eims_value; | |
7a6ea550 AD |
4349 | wr32(E1000_EICS, eics); |
4350 | } else { | |
4351 | wr32(E1000_ICS, E1000_ICS_RXDMT0); | |
4352 | } | |
9d5c8243 | 4353 | |
13800469 | 4354 | igb_spoof_check(adapter); |
fc580751 | 4355 | igb_ptp_rx_hang(adapter); |
13800469 | 4356 | |
9d5c8243 | 4357 | /* Reset the timer */ |
aa9b8cc4 AA |
4358 | if (!test_bit(__IGB_DOWN, &adapter->state)) { |
4359 | if (adapter->flags & IGB_FLAG_NEED_LINK_UPDATE) | |
4360 | mod_timer(&adapter->watchdog_timer, | |
4361 | round_jiffies(jiffies + HZ)); | |
4362 | else | |
4363 | mod_timer(&adapter->watchdog_timer, | |
4364 | round_jiffies(jiffies + 2 * HZ)); | |
4365 | } | |
9d5c8243 AK |
4366 | } |
4367 | ||
4368 | enum latency_range { | |
4369 | lowest_latency = 0, | |
4370 | low_latency = 1, | |
4371 | bulk_latency = 2, | |
4372 | latency_invalid = 255 | |
4373 | }; | |
4374 | ||
6eb5a7f1 | 4375 | /** |
b980ac18 JK |
4376 | * igb_update_ring_itr - update the dynamic ITR value based on packet size |
4377 | * @q_vector: pointer to q_vector | |
6eb5a7f1 | 4378 | * |
b980ac18 JK |
4379 | * Stores a new ITR value based on strictly on packet size. This |
4380 | * algorithm is less sophisticated than that used in igb_update_itr, | |
4381 | * due to the difficulty of synchronizing statistics across multiple | |
4382 | * receive rings. The divisors and thresholds used by this function | |
4383 | * were determined based on theoretical maximum wire speed and testing | |
4384 | * data, in order to minimize response time while increasing bulk | |
4385 | * throughput. | |
406d4965 | 4386 | * This functionality is controlled by ethtool's coalescing settings. |
b980ac18 JK |
4387 | * NOTE: This function is called only when operating in a multiqueue |
4388 | * receive environment. | |
6eb5a7f1 | 4389 | **/ |
047e0030 | 4390 | static void igb_update_ring_itr(struct igb_q_vector *q_vector) |
9d5c8243 | 4391 | { |
047e0030 | 4392 | int new_val = q_vector->itr_val; |
6eb5a7f1 | 4393 | int avg_wire_size = 0; |
047e0030 | 4394 | struct igb_adapter *adapter = q_vector->adapter; |
12dcd86b | 4395 | unsigned int packets; |
9d5c8243 | 4396 | |
6eb5a7f1 AD |
4397 | /* For non-gigabit speeds, just fix the interrupt rate at 4000 |
4398 | * ints/sec - ITR timer value of 120 ticks. | |
4399 | */ | |
4400 | if (adapter->link_speed != SPEED_1000) { | |
0ba82994 | 4401 | new_val = IGB_4K_ITR; |
6eb5a7f1 | 4402 | goto set_itr_val; |
9d5c8243 | 4403 | } |
047e0030 | 4404 | |
0ba82994 AD |
4405 | packets = q_vector->rx.total_packets; |
4406 | if (packets) | |
4407 | avg_wire_size = q_vector->rx.total_bytes / packets; | |
047e0030 | 4408 | |
0ba82994 AD |
4409 | packets = q_vector->tx.total_packets; |
4410 | if (packets) | |
4411 | avg_wire_size = max_t(u32, avg_wire_size, | |
4412 | q_vector->tx.total_bytes / packets); | |
047e0030 AD |
4413 | |
4414 | /* if avg_wire_size isn't set no work was done */ | |
4415 | if (!avg_wire_size) | |
4416 | goto clear_counts; | |
9d5c8243 | 4417 | |
6eb5a7f1 AD |
4418 | /* Add 24 bytes to size to account for CRC, preamble, and gap */ |
4419 | avg_wire_size += 24; | |
4420 | ||
4421 | /* Don't starve jumbo frames */ | |
4422 | avg_wire_size = min(avg_wire_size, 3000); | |
9d5c8243 | 4423 | |
6eb5a7f1 AD |
4424 | /* Give a little boost to mid-size frames */ |
4425 | if ((avg_wire_size > 300) && (avg_wire_size < 1200)) | |
4426 | new_val = avg_wire_size / 3; | |
4427 | else | |
4428 | new_val = avg_wire_size / 2; | |
9d5c8243 | 4429 | |
0ba82994 AD |
4430 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
4431 | if (new_val < IGB_20K_ITR && | |
4432 | ((q_vector->rx.ring && adapter->rx_itr_setting == 3) || | |
4433 | (!q_vector->rx.ring && adapter->tx_itr_setting == 3))) | |
4434 | new_val = IGB_20K_ITR; | |
abe1c363 | 4435 | |
6eb5a7f1 | 4436 | set_itr_val: |
047e0030 AD |
4437 | if (new_val != q_vector->itr_val) { |
4438 | q_vector->itr_val = new_val; | |
4439 | q_vector->set_itr = 1; | |
9d5c8243 | 4440 | } |
6eb5a7f1 | 4441 | clear_counts: |
0ba82994 AD |
4442 | q_vector->rx.total_bytes = 0; |
4443 | q_vector->rx.total_packets = 0; | |
4444 | q_vector->tx.total_bytes = 0; | |
4445 | q_vector->tx.total_packets = 0; | |
9d5c8243 AK |
4446 | } |
4447 | ||
4448 | /** | |
b980ac18 JK |
4449 | * igb_update_itr - update the dynamic ITR value based on statistics |
4450 | * @q_vector: pointer to q_vector | |
4451 | * @ring_container: ring info to update the itr for | |
4452 | * | |
4453 | * Stores a new ITR value based on packets and byte | |
4454 | * counts during the last interrupt. The advantage of per interrupt | |
4455 | * computation is faster updates and more accurate ITR for the current | |
4456 | * traffic pattern. Constants in this function were computed | |
4457 | * based on theoretical maximum wire speed and thresholds were set based | |
4458 | * on testing data as well as attempting to minimize response time | |
4459 | * while increasing bulk throughput. | |
406d4965 | 4460 | * This functionality is controlled by ethtool's coalescing settings. |
b980ac18 JK |
4461 | * NOTE: These calculations are only valid when operating in a single- |
4462 | * queue environment. | |
9d5c8243 | 4463 | **/ |
0ba82994 AD |
4464 | static void igb_update_itr(struct igb_q_vector *q_vector, |
4465 | struct igb_ring_container *ring_container) | |
9d5c8243 | 4466 | { |
0ba82994 AD |
4467 | unsigned int packets = ring_container->total_packets; |
4468 | unsigned int bytes = ring_container->total_bytes; | |
4469 | u8 itrval = ring_container->itr; | |
9d5c8243 | 4470 | |
0ba82994 | 4471 | /* no packets, exit with status unchanged */ |
9d5c8243 | 4472 | if (packets == 0) |
0ba82994 | 4473 | return; |
9d5c8243 | 4474 | |
0ba82994 | 4475 | switch (itrval) { |
9d5c8243 AK |
4476 | case lowest_latency: |
4477 | /* handle TSO and jumbo frames */ | |
4478 | if (bytes/packets > 8000) | |
0ba82994 | 4479 | itrval = bulk_latency; |
9d5c8243 | 4480 | else if ((packets < 5) && (bytes > 512)) |
0ba82994 | 4481 | itrval = low_latency; |
9d5c8243 AK |
4482 | break; |
4483 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
4484 | if (bytes > 10000) { | |
4485 | /* this if handles the TSO accounting */ | |
d34a15ab | 4486 | if (bytes/packets > 8000) |
0ba82994 | 4487 | itrval = bulk_latency; |
d34a15ab | 4488 | else if ((packets < 10) || ((bytes/packets) > 1200)) |
0ba82994 | 4489 | itrval = bulk_latency; |
d34a15ab | 4490 | else if ((packets > 35)) |
0ba82994 | 4491 | itrval = lowest_latency; |
9d5c8243 | 4492 | } else if (bytes/packets > 2000) { |
0ba82994 | 4493 | itrval = bulk_latency; |
9d5c8243 | 4494 | } else if (packets <= 2 && bytes < 512) { |
0ba82994 | 4495 | itrval = lowest_latency; |
9d5c8243 AK |
4496 | } |
4497 | break; | |
4498 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
4499 | if (bytes > 25000) { | |
4500 | if (packets > 35) | |
0ba82994 | 4501 | itrval = low_latency; |
1e5c3d21 | 4502 | } else if (bytes < 1500) { |
0ba82994 | 4503 | itrval = low_latency; |
9d5c8243 AK |
4504 | } |
4505 | break; | |
4506 | } | |
4507 | ||
0ba82994 AD |
4508 | /* clear work counters since we have the values we need */ |
4509 | ring_container->total_bytes = 0; | |
4510 | ring_container->total_packets = 0; | |
4511 | ||
4512 | /* write updated itr to ring container */ | |
4513 | ring_container->itr = itrval; | |
9d5c8243 AK |
4514 | } |
4515 | ||
0ba82994 | 4516 | static void igb_set_itr(struct igb_q_vector *q_vector) |
9d5c8243 | 4517 | { |
0ba82994 | 4518 | struct igb_adapter *adapter = q_vector->adapter; |
047e0030 | 4519 | u32 new_itr = q_vector->itr_val; |
0ba82994 | 4520 | u8 current_itr = 0; |
9d5c8243 AK |
4521 | |
4522 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ | |
4523 | if (adapter->link_speed != SPEED_1000) { | |
4524 | current_itr = 0; | |
0ba82994 | 4525 | new_itr = IGB_4K_ITR; |
9d5c8243 AK |
4526 | goto set_itr_now; |
4527 | } | |
4528 | ||
0ba82994 AD |
4529 | igb_update_itr(q_vector, &q_vector->tx); |
4530 | igb_update_itr(q_vector, &q_vector->rx); | |
9d5c8243 | 4531 | |
0ba82994 | 4532 | current_itr = max(q_vector->rx.itr, q_vector->tx.itr); |
9d5c8243 | 4533 | |
6eb5a7f1 | 4534 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
0ba82994 AD |
4535 | if (current_itr == lowest_latency && |
4536 | ((q_vector->rx.ring && adapter->rx_itr_setting == 3) || | |
4537 | (!q_vector->rx.ring && adapter->tx_itr_setting == 3))) | |
6eb5a7f1 AD |
4538 | current_itr = low_latency; |
4539 | ||
9d5c8243 AK |
4540 | switch (current_itr) { |
4541 | /* counts and packets in update_itr are dependent on these numbers */ | |
4542 | case lowest_latency: | |
0ba82994 | 4543 | new_itr = IGB_70K_ITR; /* 70,000 ints/sec */ |
9d5c8243 AK |
4544 | break; |
4545 | case low_latency: | |
0ba82994 | 4546 | new_itr = IGB_20K_ITR; /* 20,000 ints/sec */ |
9d5c8243 AK |
4547 | break; |
4548 | case bulk_latency: | |
0ba82994 | 4549 | new_itr = IGB_4K_ITR; /* 4,000 ints/sec */ |
9d5c8243 AK |
4550 | break; |
4551 | default: | |
4552 | break; | |
4553 | } | |
4554 | ||
4555 | set_itr_now: | |
047e0030 | 4556 | if (new_itr != q_vector->itr_val) { |
9d5c8243 AK |
4557 | /* this attempts to bias the interrupt rate towards Bulk |
4558 | * by adding intermediate steps when interrupt rate is | |
b980ac18 JK |
4559 | * increasing |
4560 | */ | |
047e0030 | 4561 | new_itr = new_itr > q_vector->itr_val ? |
b980ac18 JK |
4562 | max((new_itr * q_vector->itr_val) / |
4563 | (new_itr + (q_vector->itr_val >> 2)), | |
4564 | new_itr) : new_itr; | |
9d5c8243 AK |
4565 | /* Don't write the value here; it resets the adapter's |
4566 | * internal timer, and causes us to delay far longer than | |
4567 | * we should between interrupts. Instead, we write the ITR | |
4568 | * value at the beginning of the next interrupt so the timing | |
4569 | * ends up being correct. | |
4570 | */ | |
047e0030 AD |
4571 | q_vector->itr_val = new_itr; |
4572 | q_vector->set_itr = 1; | |
9d5c8243 | 4573 | } |
9d5c8243 AK |
4574 | } |
4575 | ||
c50b52a0 SH |
4576 | static void igb_tx_ctxtdesc(struct igb_ring *tx_ring, u32 vlan_macip_lens, |
4577 | u32 type_tucmd, u32 mss_l4len_idx) | |
7d13a7d0 AD |
4578 | { |
4579 | struct e1000_adv_tx_context_desc *context_desc; | |
4580 | u16 i = tx_ring->next_to_use; | |
4581 | ||
4582 | context_desc = IGB_TX_CTXTDESC(tx_ring, i); | |
4583 | ||
4584 | i++; | |
4585 | tx_ring->next_to_use = (i < tx_ring->count) ? i : 0; | |
4586 | ||
4587 | /* set bits to identify this as an advanced context descriptor */ | |
4588 | type_tucmd |= E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT; | |
4589 | ||
4590 | /* For 82575, context index must be unique per ring. */ | |
866cff06 | 4591 | if (test_bit(IGB_RING_FLAG_TX_CTX_IDX, &tx_ring->flags)) |
7d13a7d0 AD |
4592 | mss_l4len_idx |= tx_ring->reg_idx << 4; |
4593 | ||
4594 | context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); | |
4595 | context_desc->seqnum_seed = 0; | |
4596 | context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd); | |
4597 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); | |
4598 | } | |
4599 | ||
7af40ad9 AD |
4600 | static int igb_tso(struct igb_ring *tx_ring, |
4601 | struct igb_tx_buffer *first, | |
4602 | u8 *hdr_len) | |
9d5c8243 | 4603 | { |
7af40ad9 | 4604 | struct sk_buff *skb = first->skb; |
7d13a7d0 AD |
4605 | u32 vlan_macip_lens, type_tucmd; |
4606 | u32 mss_l4len_idx, l4len; | |
06c14e5a | 4607 | int err; |
7d13a7d0 | 4608 | |
ed6aa105 AD |
4609 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
4610 | return 0; | |
4611 | ||
7d13a7d0 AD |
4612 | if (!skb_is_gso(skb)) |
4613 | return 0; | |
9d5c8243 | 4614 | |
06c14e5a FR |
4615 | err = skb_cow_head(skb, 0); |
4616 | if (err < 0) | |
4617 | return err; | |
9d5c8243 | 4618 | |
7d13a7d0 AD |
4619 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ |
4620 | type_tucmd = E1000_ADVTXD_TUCMD_L4T_TCP; | |
9d5c8243 | 4621 | |
7c4d16ff | 4622 | if (first->protocol == htons(ETH_P_IP)) { |
9d5c8243 AK |
4623 | struct iphdr *iph = ip_hdr(skb); |
4624 | iph->tot_len = 0; | |
4625 | iph->check = 0; | |
4626 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, | |
4627 | iph->daddr, 0, | |
4628 | IPPROTO_TCP, | |
4629 | 0); | |
7d13a7d0 | 4630 | type_tucmd |= E1000_ADVTXD_TUCMD_IPV4; |
7af40ad9 AD |
4631 | first->tx_flags |= IGB_TX_FLAGS_TSO | |
4632 | IGB_TX_FLAGS_CSUM | | |
4633 | IGB_TX_FLAGS_IPV4; | |
8e1e8a47 | 4634 | } else if (skb_is_gso_v6(skb)) { |
9d5c8243 AK |
4635 | ipv6_hdr(skb)->payload_len = 0; |
4636 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
4637 | &ipv6_hdr(skb)->daddr, | |
4638 | 0, IPPROTO_TCP, 0); | |
7af40ad9 AD |
4639 | first->tx_flags |= IGB_TX_FLAGS_TSO | |
4640 | IGB_TX_FLAGS_CSUM; | |
9d5c8243 AK |
4641 | } |
4642 | ||
7af40ad9 | 4643 | /* compute header lengths */ |
7d13a7d0 AD |
4644 | l4len = tcp_hdrlen(skb); |
4645 | *hdr_len = skb_transport_offset(skb) + l4len; | |
9d5c8243 | 4646 | |
7af40ad9 AD |
4647 | /* update gso size and bytecount with header size */ |
4648 | first->gso_segs = skb_shinfo(skb)->gso_segs; | |
4649 | first->bytecount += (first->gso_segs - 1) * *hdr_len; | |
4650 | ||
9d5c8243 | 4651 | /* MSS L4LEN IDX */ |
7d13a7d0 AD |
4652 | mss_l4len_idx = l4len << E1000_ADVTXD_L4LEN_SHIFT; |
4653 | mss_l4len_idx |= skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT; | |
9d5c8243 | 4654 | |
7d13a7d0 AD |
4655 | /* VLAN MACLEN IPLEN */ |
4656 | vlan_macip_lens = skb_network_header_len(skb); | |
4657 | vlan_macip_lens |= skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT; | |
7af40ad9 | 4658 | vlan_macip_lens |= first->tx_flags & IGB_TX_FLAGS_VLAN_MASK; |
9d5c8243 | 4659 | |
7d13a7d0 | 4660 | igb_tx_ctxtdesc(tx_ring, vlan_macip_lens, type_tucmd, mss_l4len_idx); |
9d5c8243 | 4661 | |
7d13a7d0 | 4662 | return 1; |
9d5c8243 AK |
4663 | } |
4664 | ||
7af40ad9 | 4665 | static void igb_tx_csum(struct igb_ring *tx_ring, struct igb_tx_buffer *first) |
9d5c8243 | 4666 | { |
7af40ad9 | 4667 | struct sk_buff *skb = first->skb; |
7d13a7d0 AD |
4668 | u32 vlan_macip_lens = 0; |
4669 | u32 mss_l4len_idx = 0; | |
4670 | u32 type_tucmd = 0; | |
9d5c8243 | 4671 | |
7d13a7d0 | 4672 | if (skb->ip_summed != CHECKSUM_PARTIAL) { |
7af40ad9 AD |
4673 | if (!(first->tx_flags & IGB_TX_FLAGS_VLAN)) |
4674 | return; | |
7d13a7d0 AD |
4675 | } else { |
4676 | u8 l4_hdr = 0; | |
9005df38 | 4677 | |
7af40ad9 | 4678 | switch (first->protocol) { |
7c4d16ff | 4679 | case htons(ETH_P_IP): |
7d13a7d0 AD |
4680 | vlan_macip_lens |= skb_network_header_len(skb); |
4681 | type_tucmd |= E1000_ADVTXD_TUCMD_IPV4; | |
4682 | l4_hdr = ip_hdr(skb)->protocol; | |
4683 | break; | |
7c4d16ff | 4684 | case htons(ETH_P_IPV6): |
7d13a7d0 AD |
4685 | vlan_macip_lens |= skb_network_header_len(skb); |
4686 | l4_hdr = ipv6_hdr(skb)->nexthdr; | |
4687 | break; | |
4688 | default: | |
4689 | if (unlikely(net_ratelimit())) { | |
4690 | dev_warn(tx_ring->dev, | |
b980ac18 JK |
4691 | "partial checksum but proto=%x!\n", |
4692 | first->protocol); | |
fa4a7ef3 | 4693 | } |
7d13a7d0 AD |
4694 | break; |
4695 | } | |
fa4a7ef3 | 4696 | |
7d13a7d0 AD |
4697 | switch (l4_hdr) { |
4698 | case IPPROTO_TCP: | |
4699 | type_tucmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
4700 | mss_l4len_idx = tcp_hdrlen(skb) << | |
4701 | E1000_ADVTXD_L4LEN_SHIFT; | |
4702 | break; | |
4703 | case IPPROTO_SCTP: | |
4704 | type_tucmd |= E1000_ADVTXD_TUCMD_L4T_SCTP; | |
4705 | mss_l4len_idx = sizeof(struct sctphdr) << | |
4706 | E1000_ADVTXD_L4LEN_SHIFT; | |
4707 | break; | |
4708 | case IPPROTO_UDP: | |
4709 | mss_l4len_idx = sizeof(struct udphdr) << | |
4710 | E1000_ADVTXD_L4LEN_SHIFT; | |
4711 | break; | |
4712 | default: | |
4713 | if (unlikely(net_ratelimit())) { | |
4714 | dev_warn(tx_ring->dev, | |
b980ac18 JK |
4715 | "partial checksum but l4 proto=%x!\n", |
4716 | l4_hdr); | |
44b0cda3 | 4717 | } |
7d13a7d0 | 4718 | break; |
9d5c8243 | 4719 | } |
7af40ad9 AD |
4720 | |
4721 | /* update TX checksum flag */ | |
4722 | first->tx_flags |= IGB_TX_FLAGS_CSUM; | |
7d13a7d0 | 4723 | } |
9d5c8243 | 4724 | |
7d13a7d0 | 4725 | vlan_macip_lens |= skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT; |
7af40ad9 | 4726 | vlan_macip_lens |= first->tx_flags & IGB_TX_FLAGS_VLAN_MASK; |
9d5c8243 | 4727 | |
7d13a7d0 | 4728 | igb_tx_ctxtdesc(tx_ring, vlan_macip_lens, type_tucmd, mss_l4len_idx); |
9d5c8243 AK |
4729 | } |
4730 | ||
1d9daf45 AD |
4731 | #define IGB_SET_FLAG(_input, _flag, _result) \ |
4732 | ((_flag <= _result) ? \ | |
4733 | ((u32)(_input & _flag) * (_result / _flag)) : \ | |
4734 | ((u32)(_input & _flag) / (_flag / _result))) | |
4735 | ||
4736 | static u32 igb_tx_cmd_type(struct sk_buff *skb, u32 tx_flags) | |
e032afc8 AD |
4737 | { |
4738 | /* set type for advanced descriptor with frame checksum insertion */ | |
1d9daf45 AD |
4739 | u32 cmd_type = E1000_ADVTXD_DTYP_DATA | |
4740 | E1000_ADVTXD_DCMD_DEXT | | |
4741 | E1000_ADVTXD_DCMD_IFCS; | |
e032afc8 AD |
4742 | |
4743 | /* set HW vlan bit if vlan is present */ | |
1d9daf45 AD |
4744 | cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_VLAN, |
4745 | (E1000_ADVTXD_DCMD_VLE)); | |
4746 | ||
4747 | /* set segmentation bits for TSO */ | |
4748 | cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_TSO, | |
4749 | (E1000_ADVTXD_DCMD_TSE)); | |
e032afc8 AD |
4750 | |
4751 | /* set timestamp bit if present */ | |
1d9daf45 AD |
4752 | cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_TSTAMP, |
4753 | (E1000_ADVTXD_MAC_TSTAMP)); | |
e032afc8 | 4754 | |
1d9daf45 AD |
4755 | /* insert frame checksum */ |
4756 | cmd_type ^= IGB_SET_FLAG(skb->no_fcs, 1, E1000_ADVTXD_DCMD_IFCS); | |
e032afc8 AD |
4757 | |
4758 | return cmd_type; | |
4759 | } | |
4760 | ||
7af40ad9 AD |
4761 | static void igb_tx_olinfo_status(struct igb_ring *tx_ring, |
4762 | union e1000_adv_tx_desc *tx_desc, | |
4763 | u32 tx_flags, unsigned int paylen) | |
e032afc8 AD |
4764 | { |
4765 | u32 olinfo_status = paylen << E1000_ADVTXD_PAYLEN_SHIFT; | |
4766 | ||
1d9daf45 AD |
4767 | /* 82575 requires a unique index per ring */ |
4768 | if (test_bit(IGB_RING_FLAG_TX_CTX_IDX, &tx_ring->flags)) | |
e032afc8 AD |
4769 | olinfo_status |= tx_ring->reg_idx << 4; |
4770 | ||
4771 | /* insert L4 checksum */ | |
1d9daf45 AD |
4772 | olinfo_status |= IGB_SET_FLAG(tx_flags, |
4773 | IGB_TX_FLAGS_CSUM, | |
4774 | (E1000_TXD_POPTS_TXSM << 8)); | |
e032afc8 | 4775 | |
1d9daf45 AD |
4776 | /* insert IPv4 checksum */ |
4777 | olinfo_status |= IGB_SET_FLAG(tx_flags, | |
4778 | IGB_TX_FLAGS_IPV4, | |
4779 | (E1000_TXD_POPTS_IXSM << 8)); | |
e032afc8 | 4780 | |
7af40ad9 | 4781 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); |
e032afc8 AD |
4782 | } |
4783 | ||
7af40ad9 AD |
4784 | static void igb_tx_map(struct igb_ring *tx_ring, |
4785 | struct igb_tx_buffer *first, | |
ebe42d16 | 4786 | const u8 hdr_len) |
9d5c8243 | 4787 | { |
7af40ad9 | 4788 | struct sk_buff *skb = first->skb; |
c9f14bf3 | 4789 | struct igb_tx_buffer *tx_buffer; |
ebe42d16 | 4790 | union e1000_adv_tx_desc *tx_desc; |
80d0759e | 4791 | struct skb_frag_struct *frag; |
ebe42d16 | 4792 | dma_addr_t dma; |
80d0759e | 4793 | unsigned int data_len, size; |
7af40ad9 | 4794 | u32 tx_flags = first->tx_flags; |
1d9daf45 | 4795 | u32 cmd_type = igb_tx_cmd_type(skb, tx_flags); |
ebe42d16 | 4796 | u16 i = tx_ring->next_to_use; |
ebe42d16 AD |
4797 | |
4798 | tx_desc = IGB_TX_DESC(tx_ring, i); | |
4799 | ||
80d0759e AD |
4800 | igb_tx_olinfo_status(tx_ring, tx_desc, tx_flags, skb->len - hdr_len); |
4801 | ||
4802 | size = skb_headlen(skb); | |
4803 | data_len = skb->data_len; | |
ebe42d16 AD |
4804 | |
4805 | dma = dma_map_single(tx_ring->dev, skb->data, size, DMA_TO_DEVICE); | |
9d5c8243 | 4806 | |
80d0759e AD |
4807 | tx_buffer = first; |
4808 | ||
4809 | for (frag = &skb_shinfo(skb)->frags[0];; frag++) { | |
4810 | if (dma_mapping_error(tx_ring->dev, dma)) | |
4811 | goto dma_error; | |
4812 | ||
4813 | /* record length, and DMA address */ | |
4814 | dma_unmap_len_set(tx_buffer, len, size); | |
4815 | dma_unmap_addr_set(tx_buffer, dma, dma); | |
4816 | ||
4817 | tx_desc->read.buffer_addr = cpu_to_le64(dma); | |
ebe42d16 | 4818 | |
ebe42d16 AD |
4819 | while (unlikely(size > IGB_MAX_DATA_PER_TXD)) { |
4820 | tx_desc->read.cmd_type_len = | |
1d9daf45 | 4821 | cpu_to_le32(cmd_type ^ IGB_MAX_DATA_PER_TXD); |
ebe42d16 AD |
4822 | |
4823 | i++; | |
4824 | tx_desc++; | |
4825 | if (i == tx_ring->count) { | |
4826 | tx_desc = IGB_TX_DESC(tx_ring, 0); | |
4827 | i = 0; | |
4828 | } | |
80d0759e | 4829 | tx_desc->read.olinfo_status = 0; |
ebe42d16 AD |
4830 | |
4831 | dma += IGB_MAX_DATA_PER_TXD; | |
4832 | size -= IGB_MAX_DATA_PER_TXD; | |
4833 | ||
ebe42d16 AD |
4834 | tx_desc->read.buffer_addr = cpu_to_le64(dma); |
4835 | } | |
4836 | ||
4837 | if (likely(!data_len)) | |
4838 | break; | |
2bbfebe2 | 4839 | |
1d9daf45 | 4840 | tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type ^ size); |
9d5c8243 | 4841 | |
65689fef | 4842 | i++; |
ebe42d16 AD |
4843 | tx_desc++; |
4844 | if (i == tx_ring->count) { | |
4845 | tx_desc = IGB_TX_DESC(tx_ring, 0); | |
65689fef | 4846 | i = 0; |
ebe42d16 | 4847 | } |
80d0759e | 4848 | tx_desc->read.olinfo_status = 0; |
65689fef | 4849 | |
9e903e08 | 4850 | size = skb_frag_size(frag); |
ebe42d16 AD |
4851 | data_len -= size; |
4852 | ||
4853 | dma = skb_frag_dma_map(tx_ring->dev, frag, 0, | |
80d0759e | 4854 | size, DMA_TO_DEVICE); |
6366ad33 | 4855 | |
c9f14bf3 | 4856 | tx_buffer = &tx_ring->tx_buffer_info[i]; |
9d5c8243 AK |
4857 | } |
4858 | ||
ebe42d16 | 4859 | /* write last descriptor with RS and EOP bits */ |
1d9daf45 AD |
4860 | cmd_type |= size | IGB_TXD_DCMD; |
4861 | tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type); | |
8542db05 | 4862 | |
80d0759e AD |
4863 | netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount); |
4864 | ||
8542db05 AD |
4865 | /* set the timestamp */ |
4866 | first->time_stamp = jiffies; | |
4867 | ||
b980ac18 | 4868 | /* Force memory writes to complete before letting h/w know there |
ebe42d16 AD |
4869 | * are new descriptors to fetch. (Only applicable for weak-ordered |
4870 | * memory model archs, such as IA-64). | |
4871 | * | |
4872 | * We also need this memory barrier to make certain all of the | |
4873 | * status bits have been updated before next_to_watch is written. | |
4874 | */ | |
4875 | wmb(); | |
4876 | ||
8542db05 | 4877 | /* set next_to_watch value indicating a packet is present */ |
ebe42d16 | 4878 | first->next_to_watch = tx_desc; |
9d5c8243 | 4879 | |
ebe42d16 AD |
4880 | i++; |
4881 | if (i == tx_ring->count) | |
4882 | i = 0; | |
6366ad33 | 4883 | |
ebe42d16 | 4884 | tx_ring->next_to_use = i; |
6366ad33 | 4885 | |
ebe42d16 | 4886 | writel(i, tx_ring->tail); |
6366ad33 | 4887 | |
ebe42d16 | 4888 | /* we need this if more than one processor can write to our tail |
b980ac18 JK |
4889 | * at a time, it synchronizes IO on IA64/Altix systems |
4890 | */ | |
ebe42d16 AD |
4891 | mmiowb(); |
4892 | ||
4893 | return; | |
4894 | ||
4895 | dma_error: | |
4896 | dev_err(tx_ring->dev, "TX DMA map failed\n"); | |
4897 | ||
4898 | /* clear dma mappings for failed tx_buffer_info map */ | |
4899 | for (;;) { | |
c9f14bf3 AD |
4900 | tx_buffer = &tx_ring->tx_buffer_info[i]; |
4901 | igb_unmap_and_free_tx_resource(tx_ring, tx_buffer); | |
4902 | if (tx_buffer == first) | |
ebe42d16 | 4903 | break; |
a77ff709 NN |
4904 | if (i == 0) |
4905 | i = tx_ring->count; | |
6366ad33 | 4906 | i--; |
6366ad33 AD |
4907 | } |
4908 | ||
9d5c8243 | 4909 | tx_ring->next_to_use = i; |
9d5c8243 AK |
4910 | } |
4911 | ||
6ad4edfc | 4912 | static int __igb_maybe_stop_tx(struct igb_ring *tx_ring, const u16 size) |
9d5c8243 | 4913 | { |
e694e964 AD |
4914 | struct net_device *netdev = tx_ring->netdev; |
4915 | ||
661086df | 4916 | netif_stop_subqueue(netdev, tx_ring->queue_index); |
661086df | 4917 | |
9d5c8243 AK |
4918 | /* Herbert's original patch had: |
4919 | * smp_mb__after_netif_stop_queue(); | |
b980ac18 JK |
4920 | * but since that doesn't exist yet, just open code it. |
4921 | */ | |
9d5c8243 AK |
4922 | smp_mb(); |
4923 | ||
4924 | /* We need to check again in a case another CPU has just | |
b980ac18 JK |
4925 | * made room available. |
4926 | */ | |
c493ea45 | 4927 | if (igb_desc_unused(tx_ring) < size) |
9d5c8243 AK |
4928 | return -EBUSY; |
4929 | ||
4930 | /* A reprieve! */ | |
661086df | 4931 | netif_wake_subqueue(netdev, tx_ring->queue_index); |
12dcd86b ED |
4932 | |
4933 | u64_stats_update_begin(&tx_ring->tx_syncp2); | |
4934 | tx_ring->tx_stats.restart_queue2++; | |
4935 | u64_stats_update_end(&tx_ring->tx_syncp2); | |
4936 | ||
9d5c8243 AK |
4937 | return 0; |
4938 | } | |
4939 | ||
6ad4edfc | 4940 | static inline int igb_maybe_stop_tx(struct igb_ring *tx_ring, const u16 size) |
9d5c8243 | 4941 | { |
c493ea45 | 4942 | if (igb_desc_unused(tx_ring) >= size) |
9d5c8243 | 4943 | return 0; |
e694e964 | 4944 | return __igb_maybe_stop_tx(tx_ring, size); |
9d5c8243 AK |
4945 | } |
4946 | ||
cd392f5c AD |
4947 | netdev_tx_t igb_xmit_frame_ring(struct sk_buff *skb, |
4948 | struct igb_ring *tx_ring) | |
9d5c8243 | 4949 | { |
8542db05 | 4950 | struct igb_tx_buffer *first; |
ebe42d16 | 4951 | int tso; |
91d4ee33 | 4952 | u32 tx_flags = 0; |
21ba6fe1 | 4953 | u16 count = TXD_USE_COUNT(skb_headlen(skb)); |
31f6adbb | 4954 | __be16 protocol = vlan_get_protocol(skb); |
91d4ee33 | 4955 | u8 hdr_len = 0; |
9d5c8243 | 4956 | |
21ba6fe1 AD |
4957 | /* need: 1 descriptor per page * PAGE_SIZE/IGB_MAX_DATA_PER_TXD, |
4958 | * + 1 desc for skb_headlen/IGB_MAX_DATA_PER_TXD, | |
9d5c8243 | 4959 | * + 2 desc gap to keep tail from touching head, |
9d5c8243 | 4960 | * + 1 desc for context descriptor, |
21ba6fe1 AD |
4961 | * otherwise try next time |
4962 | */ | |
4963 | if (NETDEV_FRAG_PAGE_MAX_SIZE > IGB_MAX_DATA_PER_TXD) { | |
4964 | unsigned short f; | |
9005df38 | 4965 | |
21ba6fe1 AD |
4966 | for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) |
4967 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size); | |
4968 | } else { | |
4969 | count += skb_shinfo(skb)->nr_frags; | |
4970 | } | |
4971 | ||
4972 | if (igb_maybe_stop_tx(tx_ring, count + 3)) { | |
9d5c8243 | 4973 | /* this is a hard error */ |
9d5c8243 AK |
4974 | return NETDEV_TX_BUSY; |
4975 | } | |
33af6bcc | 4976 | |
7af40ad9 AD |
4977 | /* record the location of the first descriptor for this packet */ |
4978 | first = &tx_ring->tx_buffer_info[tx_ring->next_to_use]; | |
4979 | first->skb = skb; | |
4980 | first->bytecount = skb->len; | |
4981 | first->gso_segs = 1; | |
4982 | ||
b646c22e AD |
4983 | if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) { |
4984 | struct igb_adapter *adapter = netdev_priv(tx_ring->netdev); | |
1f6e8178 | 4985 | |
ed4420a3 JK |
4986 | if (!test_and_set_bit_lock(__IGB_PTP_TX_IN_PROGRESS, |
4987 | &adapter->state)) { | |
b646c22e AD |
4988 | skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; |
4989 | tx_flags |= IGB_TX_FLAGS_TSTAMP; | |
4990 | ||
4991 | adapter->ptp_tx_skb = skb_get(skb); | |
4992 | adapter->ptp_tx_start = jiffies; | |
4993 | if (adapter->hw.mac.type == e1000_82576) | |
4994 | schedule_work(&adapter->ptp_tx_work); | |
4995 | } | |
33af6bcc | 4996 | } |
9d5c8243 | 4997 | |
afc835d1 JK |
4998 | skb_tx_timestamp(skb); |
4999 | ||
eab6d18d | 5000 | if (vlan_tx_tag_present(skb)) { |
9d5c8243 AK |
5001 | tx_flags |= IGB_TX_FLAGS_VLAN; |
5002 | tx_flags |= (vlan_tx_tag_get(skb) << IGB_TX_FLAGS_VLAN_SHIFT); | |
5003 | } | |
5004 | ||
7af40ad9 AD |
5005 | /* record initial flags and protocol */ |
5006 | first->tx_flags = tx_flags; | |
5007 | first->protocol = protocol; | |
cdfd01fc | 5008 | |
7af40ad9 AD |
5009 | tso = igb_tso(tx_ring, first, &hdr_len); |
5010 | if (tso < 0) | |
7d13a7d0 | 5011 | goto out_drop; |
7af40ad9 AD |
5012 | else if (!tso) |
5013 | igb_tx_csum(tx_ring, first); | |
9d5c8243 | 5014 | |
7af40ad9 | 5015 | igb_tx_map(tx_ring, first, hdr_len); |
85ad76b2 AD |
5016 | |
5017 | /* Make sure there is space in the ring for the next send. */ | |
21ba6fe1 | 5018 | igb_maybe_stop_tx(tx_ring, DESC_NEEDED); |
85ad76b2 | 5019 | |
9d5c8243 | 5020 | return NETDEV_TX_OK; |
7d13a7d0 AD |
5021 | |
5022 | out_drop: | |
7af40ad9 AD |
5023 | igb_unmap_and_free_tx_resource(tx_ring, first); |
5024 | ||
7d13a7d0 | 5025 | return NETDEV_TX_OK; |
9d5c8243 AK |
5026 | } |
5027 | ||
1cc3bd87 AD |
5028 | static inline struct igb_ring *igb_tx_queue_mapping(struct igb_adapter *adapter, |
5029 | struct sk_buff *skb) | |
5030 | { | |
5031 | unsigned int r_idx = skb->queue_mapping; | |
5032 | ||
5033 | if (r_idx >= adapter->num_tx_queues) | |
5034 | r_idx = r_idx % adapter->num_tx_queues; | |
5035 | ||
5036 | return adapter->tx_ring[r_idx]; | |
5037 | } | |
5038 | ||
cd392f5c AD |
5039 | static netdev_tx_t igb_xmit_frame(struct sk_buff *skb, |
5040 | struct net_device *netdev) | |
9d5c8243 AK |
5041 | { |
5042 | struct igb_adapter *adapter = netdev_priv(netdev); | |
b1a436c3 AD |
5043 | |
5044 | if (test_bit(__IGB_DOWN, &adapter->state)) { | |
5045 | dev_kfree_skb_any(skb); | |
5046 | return NETDEV_TX_OK; | |
5047 | } | |
5048 | ||
5049 | if (skb->len <= 0) { | |
5050 | dev_kfree_skb_any(skb); | |
5051 | return NETDEV_TX_OK; | |
5052 | } | |
5053 | ||
b980ac18 | 5054 | /* The minimum packet size with TCTL.PSP set is 17 so pad the skb |
1cc3bd87 AD |
5055 | * in order to meet this minimum size requirement. |
5056 | */ | |
ea5ceeab TD |
5057 | if (unlikely(skb->len < 17)) { |
5058 | if (skb_pad(skb, 17 - skb->len)) | |
1cc3bd87 AD |
5059 | return NETDEV_TX_OK; |
5060 | skb->len = 17; | |
ea5ceeab | 5061 | skb_set_tail_pointer(skb, 17); |
1cc3bd87 | 5062 | } |
9d5c8243 | 5063 | |
1cc3bd87 | 5064 | return igb_xmit_frame_ring(skb, igb_tx_queue_mapping(adapter, skb)); |
9d5c8243 AK |
5065 | } |
5066 | ||
5067 | /** | |
b980ac18 JK |
5068 | * igb_tx_timeout - Respond to a Tx Hang |
5069 | * @netdev: network interface device structure | |
9d5c8243 AK |
5070 | **/ |
5071 | static void igb_tx_timeout(struct net_device *netdev) | |
5072 | { | |
5073 | struct igb_adapter *adapter = netdev_priv(netdev); | |
5074 | struct e1000_hw *hw = &adapter->hw; | |
5075 | ||
5076 | /* Do the reset outside of interrupt context */ | |
5077 | adapter->tx_timeout_count++; | |
f7ba205e | 5078 | |
06218a8d | 5079 | if (hw->mac.type >= e1000_82580) |
55cac248 AD |
5080 | hw->dev_spec._82575.global_device_reset = true; |
5081 | ||
9d5c8243 | 5082 | schedule_work(&adapter->reset_task); |
265de409 AD |
5083 | wr32(E1000_EICS, |
5084 | (adapter->eims_enable_mask & ~adapter->eims_other)); | |
9d5c8243 AK |
5085 | } |
5086 | ||
5087 | static void igb_reset_task(struct work_struct *work) | |
5088 | { | |
5089 | struct igb_adapter *adapter; | |
5090 | adapter = container_of(work, struct igb_adapter, reset_task); | |
5091 | ||
c97ec42a TI |
5092 | igb_dump(adapter); |
5093 | netdev_err(adapter->netdev, "Reset adapter\n"); | |
9d5c8243 AK |
5094 | igb_reinit_locked(adapter); |
5095 | } | |
5096 | ||
5097 | /** | |
b980ac18 JK |
5098 | * igb_get_stats64 - Get System Network Statistics |
5099 | * @netdev: network interface device structure | |
5100 | * @stats: rtnl_link_stats64 pointer | |
9d5c8243 | 5101 | **/ |
12dcd86b | 5102 | static struct rtnl_link_stats64 *igb_get_stats64(struct net_device *netdev, |
b980ac18 | 5103 | struct rtnl_link_stats64 *stats) |
9d5c8243 | 5104 | { |
12dcd86b ED |
5105 | struct igb_adapter *adapter = netdev_priv(netdev); |
5106 | ||
5107 | spin_lock(&adapter->stats64_lock); | |
5108 | igb_update_stats(adapter, &adapter->stats64); | |
5109 | memcpy(stats, &adapter->stats64, sizeof(*stats)); | |
5110 | spin_unlock(&adapter->stats64_lock); | |
5111 | ||
5112 | return stats; | |
9d5c8243 AK |
5113 | } |
5114 | ||
5115 | /** | |
b980ac18 JK |
5116 | * igb_change_mtu - Change the Maximum Transfer Unit |
5117 | * @netdev: network interface device structure | |
5118 | * @new_mtu: new value for maximum frame size | |
9d5c8243 | 5119 | * |
b980ac18 | 5120 | * Returns 0 on success, negative on failure |
9d5c8243 AK |
5121 | **/ |
5122 | static int igb_change_mtu(struct net_device *netdev, int new_mtu) | |
5123 | { | |
5124 | struct igb_adapter *adapter = netdev_priv(netdev); | |
090b1795 | 5125 | struct pci_dev *pdev = adapter->pdev; |
153285f9 | 5126 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; |
9d5c8243 | 5127 | |
c809d227 | 5128 | if ((new_mtu < 68) || (max_frame > MAX_JUMBO_FRAME_SIZE)) { |
090b1795 | 5129 | dev_err(&pdev->dev, "Invalid MTU setting\n"); |
9d5c8243 AK |
5130 | return -EINVAL; |
5131 | } | |
5132 | ||
153285f9 | 5133 | #define MAX_STD_JUMBO_FRAME_SIZE 9238 |
9d5c8243 | 5134 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { |
090b1795 | 5135 | dev_err(&pdev->dev, "MTU > 9216 not supported.\n"); |
9d5c8243 AK |
5136 | return -EINVAL; |
5137 | } | |
5138 | ||
2ccd994c AD |
5139 | /* adjust max frame to be at least the size of a standard frame */ |
5140 | if (max_frame < (ETH_FRAME_LEN + ETH_FCS_LEN)) | |
5141 | max_frame = ETH_FRAME_LEN + ETH_FCS_LEN; | |
5142 | ||
9d5c8243 | 5143 | while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) |
0d451e79 | 5144 | usleep_range(1000, 2000); |
73cd78f1 | 5145 | |
9d5c8243 AK |
5146 | /* igb_down has a dependency on max_frame_size */ |
5147 | adapter->max_frame_size = max_frame; | |
559e9c49 | 5148 | |
4c844851 AD |
5149 | if (netif_running(netdev)) |
5150 | igb_down(adapter); | |
9d5c8243 | 5151 | |
090b1795 | 5152 | dev_info(&pdev->dev, "changing MTU from %d to %d\n", |
9d5c8243 AK |
5153 | netdev->mtu, new_mtu); |
5154 | netdev->mtu = new_mtu; | |
5155 | ||
5156 | if (netif_running(netdev)) | |
5157 | igb_up(adapter); | |
5158 | else | |
5159 | igb_reset(adapter); | |
5160 | ||
5161 | clear_bit(__IGB_RESETTING, &adapter->state); | |
5162 | ||
5163 | return 0; | |
5164 | } | |
5165 | ||
5166 | /** | |
b980ac18 JK |
5167 | * igb_update_stats - Update the board statistics counters |
5168 | * @adapter: board private structure | |
9d5c8243 | 5169 | **/ |
12dcd86b ED |
5170 | void igb_update_stats(struct igb_adapter *adapter, |
5171 | struct rtnl_link_stats64 *net_stats) | |
9d5c8243 AK |
5172 | { |
5173 | struct e1000_hw *hw = &adapter->hw; | |
5174 | struct pci_dev *pdev = adapter->pdev; | |
fa3d9a6d | 5175 | u32 reg, mpc; |
9d5c8243 | 5176 | u16 phy_tmp; |
3f9c0164 AD |
5177 | int i; |
5178 | u64 bytes, packets; | |
12dcd86b ED |
5179 | unsigned int start; |
5180 | u64 _bytes, _packets; | |
9d5c8243 AK |
5181 | |
5182 | #define PHY_IDLE_ERROR_COUNT_MASK 0x00FF | |
5183 | ||
b980ac18 | 5184 | /* Prevent stats update while adapter is being reset, or if the pci |
9d5c8243 AK |
5185 | * connection is down. |
5186 | */ | |
5187 | if (adapter->link_speed == 0) | |
5188 | return; | |
5189 | if (pci_channel_offline(pdev)) | |
5190 | return; | |
5191 | ||
3f9c0164 AD |
5192 | bytes = 0; |
5193 | packets = 0; | |
7f90128e AA |
5194 | |
5195 | rcu_read_lock(); | |
3f9c0164 | 5196 | for (i = 0; i < adapter->num_rx_queues; i++) { |
3025a446 | 5197 | struct igb_ring *ring = adapter->rx_ring[i]; |
e66c083a TF |
5198 | u32 rqdpc = rd32(E1000_RQDPC(i)); |
5199 | if (hw->mac.type >= e1000_i210) | |
5200 | wr32(E1000_RQDPC(i), 0); | |
12dcd86b | 5201 | |
ae1c07a6 AD |
5202 | if (rqdpc) { |
5203 | ring->rx_stats.drops += rqdpc; | |
5204 | net_stats->rx_fifo_errors += rqdpc; | |
5205 | } | |
12dcd86b ED |
5206 | |
5207 | do { | |
57a7744e | 5208 | start = u64_stats_fetch_begin_irq(&ring->rx_syncp); |
12dcd86b ED |
5209 | _bytes = ring->rx_stats.bytes; |
5210 | _packets = ring->rx_stats.packets; | |
57a7744e | 5211 | } while (u64_stats_fetch_retry_irq(&ring->rx_syncp, start)); |
12dcd86b ED |
5212 | bytes += _bytes; |
5213 | packets += _packets; | |
3f9c0164 AD |
5214 | } |
5215 | ||
128e45eb AD |
5216 | net_stats->rx_bytes = bytes; |
5217 | net_stats->rx_packets = packets; | |
3f9c0164 AD |
5218 | |
5219 | bytes = 0; | |
5220 | packets = 0; | |
5221 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
3025a446 | 5222 | struct igb_ring *ring = adapter->tx_ring[i]; |
12dcd86b | 5223 | do { |
57a7744e | 5224 | start = u64_stats_fetch_begin_irq(&ring->tx_syncp); |
12dcd86b ED |
5225 | _bytes = ring->tx_stats.bytes; |
5226 | _packets = ring->tx_stats.packets; | |
57a7744e | 5227 | } while (u64_stats_fetch_retry_irq(&ring->tx_syncp, start)); |
12dcd86b ED |
5228 | bytes += _bytes; |
5229 | packets += _packets; | |
3f9c0164 | 5230 | } |
128e45eb AD |
5231 | net_stats->tx_bytes = bytes; |
5232 | net_stats->tx_packets = packets; | |
7f90128e | 5233 | rcu_read_unlock(); |
3f9c0164 AD |
5234 | |
5235 | /* read stats registers */ | |
9d5c8243 AK |
5236 | adapter->stats.crcerrs += rd32(E1000_CRCERRS); |
5237 | adapter->stats.gprc += rd32(E1000_GPRC); | |
5238 | adapter->stats.gorc += rd32(E1000_GORCL); | |
5239 | rd32(E1000_GORCH); /* clear GORCL */ | |
5240 | adapter->stats.bprc += rd32(E1000_BPRC); | |
5241 | adapter->stats.mprc += rd32(E1000_MPRC); | |
5242 | adapter->stats.roc += rd32(E1000_ROC); | |
5243 | ||
5244 | adapter->stats.prc64 += rd32(E1000_PRC64); | |
5245 | adapter->stats.prc127 += rd32(E1000_PRC127); | |
5246 | adapter->stats.prc255 += rd32(E1000_PRC255); | |
5247 | adapter->stats.prc511 += rd32(E1000_PRC511); | |
5248 | adapter->stats.prc1023 += rd32(E1000_PRC1023); | |
5249 | adapter->stats.prc1522 += rd32(E1000_PRC1522); | |
5250 | adapter->stats.symerrs += rd32(E1000_SYMERRS); | |
5251 | adapter->stats.sec += rd32(E1000_SEC); | |
5252 | ||
fa3d9a6d MW |
5253 | mpc = rd32(E1000_MPC); |
5254 | adapter->stats.mpc += mpc; | |
5255 | net_stats->rx_fifo_errors += mpc; | |
9d5c8243 AK |
5256 | adapter->stats.scc += rd32(E1000_SCC); |
5257 | adapter->stats.ecol += rd32(E1000_ECOL); | |
5258 | adapter->stats.mcc += rd32(E1000_MCC); | |
5259 | adapter->stats.latecol += rd32(E1000_LATECOL); | |
5260 | adapter->stats.dc += rd32(E1000_DC); | |
5261 | adapter->stats.rlec += rd32(E1000_RLEC); | |
5262 | adapter->stats.xonrxc += rd32(E1000_XONRXC); | |
5263 | adapter->stats.xontxc += rd32(E1000_XONTXC); | |
5264 | adapter->stats.xoffrxc += rd32(E1000_XOFFRXC); | |
5265 | adapter->stats.xofftxc += rd32(E1000_XOFFTXC); | |
5266 | adapter->stats.fcruc += rd32(E1000_FCRUC); | |
5267 | adapter->stats.gptc += rd32(E1000_GPTC); | |
5268 | adapter->stats.gotc += rd32(E1000_GOTCL); | |
5269 | rd32(E1000_GOTCH); /* clear GOTCL */ | |
fa3d9a6d | 5270 | adapter->stats.rnbc += rd32(E1000_RNBC); |
9d5c8243 AK |
5271 | adapter->stats.ruc += rd32(E1000_RUC); |
5272 | adapter->stats.rfc += rd32(E1000_RFC); | |
5273 | adapter->stats.rjc += rd32(E1000_RJC); | |
5274 | adapter->stats.tor += rd32(E1000_TORH); | |
5275 | adapter->stats.tot += rd32(E1000_TOTH); | |
5276 | adapter->stats.tpr += rd32(E1000_TPR); | |
5277 | ||
5278 | adapter->stats.ptc64 += rd32(E1000_PTC64); | |
5279 | adapter->stats.ptc127 += rd32(E1000_PTC127); | |
5280 | adapter->stats.ptc255 += rd32(E1000_PTC255); | |
5281 | adapter->stats.ptc511 += rd32(E1000_PTC511); | |
5282 | adapter->stats.ptc1023 += rd32(E1000_PTC1023); | |
5283 | adapter->stats.ptc1522 += rd32(E1000_PTC1522); | |
5284 | ||
5285 | adapter->stats.mptc += rd32(E1000_MPTC); | |
5286 | adapter->stats.bptc += rd32(E1000_BPTC); | |
5287 | ||
2d0b0f69 NN |
5288 | adapter->stats.tpt += rd32(E1000_TPT); |
5289 | adapter->stats.colc += rd32(E1000_COLC); | |
9d5c8243 AK |
5290 | |
5291 | adapter->stats.algnerrc += rd32(E1000_ALGNERRC); | |
43915c7c NN |
5292 | /* read internal phy specific stats */ |
5293 | reg = rd32(E1000_CTRL_EXT); | |
5294 | if (!(reg & E1000_CTRL_EXT_LINK_MODE_MASK)) { | |
5295 | adapter->stats.rxerrc += rd32(E1000_RXERRC); | |
3dbdf969 CW |
5296 | |
5297 | /* this stat has invalid values on i210/i211 */ | |
5298 | if ((hw->mac.type != e1000_i210) && | |
5299 | (hw->mac.type != e1000_i211)) | |
5300 | adapter->stats.tncrs += rd32(E1000_TNCRS); | |
43915c7c NN |
5301 | } |
5302 | ||
9d5c8243 AK |
5303 | adapter->stats.tsctc += rd32(E1000_TSCTC); |
5304 | adapter->stats.tsctfc += rd32(E1000_TSCTFC); | |
5305 | ||
5306 | adapter->stats.iac += rd32(E1000_IAC); | |
5307 | adapter->stats.icrxoc += rd32(E1000_ICRXOC); | |
5308 | adapter->stats.icrxptc += rd32(E1000_ICRXPTC); | |
5309 | adapter->stats.icrxatc += rd32(E1000_ICRXATC); | |
5310 | adapter->stats.ictxptc += rd32(E1000_ICTXPTC); | |
5311 | adapter->stats.ictxatc += rd32(E1000_ICTXATC); | |
5312 | adapter->stats.ictxqec += rd32(E1000_ICTXQEC); | |
5313 | adapter->stats.ictxqmtc += rd32(E1000_ICTXQMTC); | |
5314 | adapter->stats.icrxdmtc += rd32(E1000_ICRXDMTC); | |
5315 | ||
5316 | /* Fill out the OS statistics structure */ | |
128e45eb AD |
5317 | net_stats->multicast = adapter->stats.mprc; |
5318 | net_stats->collisions = adapter->stats.colc; | |
9d5c8243 AK |
5319 | |
5320 | /* Rx Errors */ | |
5321 | ||
5322 | /* RLEC on some newer hardware can be incorrect so build | |
b980ac18 JK |
5323 | * our own version based on RUC and ROC |
5324 | */ | |
128e45eb | 5325 | net_stats->rx_errors = adapter->stats.rxerrc + |
9d5c8243 AK |
5326 | adapter->stats.crcerrs + adapter->stats.algnerrc + |
5327 | adapter->stats.ruc + adapter->stats.roc + | |
5328 | adapter->stats.cexterr; | |
128e45eb AD |
5329 | net_stats->rx_length_errors = adapter->stats.ruc + |
5330 | adapter->stats.roc; | |
5331 | net_stats->rx_crc_errors = adapter->stats.crcerrs; | |
5332 | net_stats->rx_frame_errors = adapter->stats.algnerrc; | |
5333 | net_stats->rx_missed_errors = adapter->stats.mpc; | |
9d5c8243 AK |
5334 | |
5335 | /* Tx Errors */ | |
128e45eb AD |
5336 | net_stats->tx_errors = adapter->stats.ecol + |
5337 | adapter->stats.latecol; | |
5338 | net_stats->tx_aborted_errors = adapter->stats.ecol; | |
5339 | net_stats->tx_window_errors = adapter->stats.latecol; | |
5340 | net_stats->tx_carrier_errors = adapter->stats.tncrs; | |
9d5c8243 AK |
5341 | |
5342 | /* Tx Dropped needs to be maintained elsewhere */ | |
5343 | ||
5344 | /* Phy Stats */ | |
5345 | if (hw->phy.media_type == e1000_media_type_copper) { | |
5346 | if ((adapter->link_speed == SPEED_1000) && | |
73cd78f1 | 5347 | (!igb_read_phy_reg(hw, PHY_1000T_STATUS, &phy_tmp))) { |
9d5c8243 AK |
5348 | phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; |
5349 | adapter->phy_stats.idle_errors += phy_tmp; | |
5350 | } | |
5351 | } | |
5352 | ||
5353 | /* Management Stats */ | |
5354 | adapter->stats.mgptc += rd32(E1000_MGTPTC); | |
5355 | adapter->stats.mgprc += rd32(E1000_MGTPRC); | |
5356 | adapter->stats.mgpdc += rd32(E1000_MGTPDC); | |
0a915b95 CW |
5357 | |
5358 | /* OS2BMC Stats */ | |
5359 | reg = rd32(E1000_MANC); | |
5360 | if (reg & E1000_MANC_EN_BMC2OS) { | |
5361 | adapter->stats.o2bgptc += rd32(E1000_O2BGPTC); | |
5362 | adapter->stats.o2bspc += rd32(E1000_O2BSPC); | |
5363 | adapter->stats.b2ospc += rd32(E1000_B2OSPC); | |
5364 | adapter->stats.b2ogprc += rd32(E1000_B2OGPRC); | |
5365 | } | |
9d5c8243 AK |
5366 | } |
5367 | ||
9d5c8243 AK |
5368 | static irqreturn_t igb_msix_other(int irq, void *data) |
5369 | { | |
047e0030 | 5370 | struct igb_adapter *adapter = data; |
9d5c8243 | 5371 | struct e1000_hw *hw = &adapter->hw; |
844290e5 | 5372 | u32 icr = rd32(E1000_ICR); |
844290e5 | 5373 | /* reading ICR causes bit 31 of EICR to be cleared */ |
dda0e083 | 5374 | |
7f081d40 AD |
5375 | if (icr & E1000_ICR_DRSTA) |
5376 | schedule_work(&adapter->reset_task); | |
5377 | ||
047e0030 | 5378 | if (icr & E1000_ICR_DOUTSYNC) { |
dda0e083 AD |
5379 | /* HW is reporting DMA is out of sync */ |
5380 | adapter->stats.doosync++; | |
13800469 GR |
5381 | /* The DMA Out of Sync is also indication of a spoof event |
5382 | * in IOV mode. Check the Wrong VM Behavior register to | |
b980ac18 JK |
5383 | * see if it is really a spoof event. |
5384 | */ | |
13800469 | 5385 | igb_check_wvbr(adapter); |
dda0e083 | 5386 | } |
eebbbdba | 5387 | |
4ae196df AD |
5388 | /* Check for a mailbox event */ |
5389 | if (icr & E1000_ICR_VMMB) | |
5390 | igb_msg_task(adapter); | |
5391 | ||
5392 | if (icr & E1000_ICR_LSC) { | |
5393 | hw->mac.get_link_status = 1; | |
5394 | /* guard against interrupt when we're going down */ | |
5395 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
5396 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
5397 | } | |
5398 | ||
1f6e8178 MV |
5399 | if (icr & E1000_ICR_TS) { |
5400 | u32 tsicr = rd32(E1000_TSICR); | |
5401 | ||
5402 | if (tsicr & E1000_TSICR_TXTS) { | |
5403 | /* acknowledge the interrupt */ | |
5404 | wr32(E1000_TSICR, E1000_TSICR_TXTS); | |
5405 | /* retrieve hardware timestamp */ | |
5406 | schedule_work(&adapter->ptp_tx_work); | |
5407 | } | |
5408 | } | |
1f6e8178 | 5409 | |
844290e5 | 5410 | wr32(E1000_EIMS, adapter->eims_other); |
9d5c8243 AK |
5411 | |
5412 | return IRQ_HANDLED; | |
5413 | } | |
5414 | ||
047e0030 | 5415 | static void igb_write_itr(struct igb_q_vector *q_vector) |
9d5c8243 | 5416 | { |
26b39276 | 5417 | struct igb_adapter *adapter = q_vector->adapter; |
047e0030 | 5418 | u32 itr_val = q_vector->itr_val & 0x7FFC; |
9d5c8243 | 5419 | |
047e0030 AD |
5420 | if (!q_vector->set_itr) |
5421 | return; | |
73cd78f1 | 5422 | |
047e0030 AD |
5423 | if (!itr_val) |
5424 | itr_val = 0x4; | |
661086df | 5425 | |
26b39276 AD |
5426 | if (adapter->hw.mac.type == e1000_82575) |
5427 | itr_val |= itr_val << 16; | |
661086df | 5428 | else |
0ba82994 | 5429 | itr_val |= E1000_EITR_CNT_IGNR; |
661086df | 5430 | |
047e0030 AD |
5431 | writel(itr_val, q_vector->itr_register); |
5432 | q_vector->set_itr = 0; | |
6eb5a7f1 AD |
5433 | } |
5434 | ||
047e0030 | 5435 | static irqreturn_t igb_msix_ring(int irq, void *data) |
9d5c8243 | 5436 | { |
047e0030 | 5437 | struct igb_q_vector *q_vector = data; |
9d5c8243 | 5438 | |
047e0030 AD |
5439 | /* Write the ITR value calculated from the previous interrupt. */ |
5440 | igb_write_itr(q_vector); | |
9d5c8243 | 5441 | |
047e0030 | 5442 | napi_schedule(&q_vector->napi); |
844290e5 | 5443 | |
047e0030 | 5444 | return IRQ_HANDLED; |
fe4506b6 JC |
5445 | } |
5446 | ||
421e02f0 | 5447 | #ifdef CONFIG_IGB_DCA |
6a05004a AD |
5448 | static void igb_update_tx_dca(struct igb_adapter *adapter, |
5449 | struct igb_ring *tx_ring, | |
5450 | int cpu) | |
5451 | { | |
5452 | struct e1000_hw *hw = &adapter->hw; | |
5453 | u32 txctrl = dca3_get_tag(tx_ring->dev, cpu); | |
5454 | ||
5455 | if (hw->mac.type != e1000_82575) | |
5456 | txctrl <<= E1000_DCA_TXCTRL_CPUID_SHIFT; | |
5457 | ||
b980ac18 | 5458 | /* We can enable relaxed ordering for reads, but not writes when |
6a05004a AD |
5459 | * DCA is enabled. This is due to a known issue in some chipsets |
5460 | * which will cause the DCA tag to be cleared. | |
5461 | */ | |
5462 | txctrl |= E1000_DCA_TXCTRL_DESC_RRO_EN | | |
5463 | E1000_DCA_TXCTRL_DATA_RRO_EN | | |
5464 | E1000_DCA_TXCTRL_DESC_DCA_EN; | |
5465 | ||
5466 | wr32(E1000_DCA_TXCTRL(tx_ring->reg_idx), txctrl); | |
5467 | } | |
5468 | ||
5469 | static void igb_update_rx_dca(struct igb_adapter *adapter, | |
5470 | struct igb_ring *rx_ring, | |
5471 | int cpu) | |
5472 | { | |
5473 | struct e1000_hw *hw = &adapter->hw; | |
5474 | u32 rxctrl = dca3_get_tag(&adapter->pdev->dev, cpu); | |
5475 | ||
5476 | if (hw->mac.type != e1000_82575) | |
5477 | rxctrl <<= E1000_DCA_RXCTRL_CPUID_SHIFT; | |
5478 | ||
b980ac18 | 5479 | /* We can enable relaxed ordering for reads, but not writes when |
6a05004a AD |
5480 | * DCA is enabled. This is due to a known issue in some chipsets |
5481 | * which will cause the DCA tag to be cleared. | |
5482 | */ | |
5483 | rxctrl |= E1000_DCA_RXCTRL_DESC_RRO_EN | | |
5484 | E1000_DCA_RXCTRL_DESC_DCA_EN; | |
5485 | ||
5486 | wr32(E1000_DCA_RXCTRL(rx_ring->reg_idx), rxctrl); | |
5487 | } | |
5488 | ||
047e0030 | 5489 | static void igb_update_dca(struct igb_q_vector *q_vector) |
fe4506b6 | 5490 | { |
047e0030 | 5491 | struct igb_adapter *adapter = q_vector->adapter; |
fe4506b6 | 5492 | int cpu = get_cpu(); |
fe4506b6 | 5493 | |
047e0030 AD |
5494 | if (q_vector->cpu == cpu) |
5495 | goto out_no_update; | |
5496 | ||
6a05004a AD |
5497 | if (q_vector->tx.ring) |
5498 | igb_update_tx_dca(adapter, q_vector->tx.ring, cpu); | |
5499 | ||
5500 | if (q_vector->rx.ring) | |
5501 | igb_update_rx_dca(adapter, q_vector->rx.ring, cpu); | |
5502 | ||
047e0030 AD |
5503 | q_vector->cpu = cpu; |
5504 | out_no_update: | |
fe4506b6 JC |
5505 | put_cpu(); |
5506 | } | |
5507 | ||
5508 | static void igb_setup_dca(struct igb_adapter *adapter) | |
5509 | { | |
7e0e99ef | 5510 | struct e1000_hw *hw = &adapter->hw; |
fe4506b6 JC |
5511 | int i; |
5512 | ||
7dfc16fa | 5513 | if (!(adapter->flags & IGB_FLAG_DCA_ENABLED)) |
fe4506b6 JC |
5514 | return; |
5515 | ||
7e0e99ef AD |
5516 | /* Always use CB2 mode, difference is masked in the CB driver. */ |
5517 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_CB2); | |
5518 | ||
047e0030 | 5519 | for (i = 0; i < adapter->num_q_vectors; i++) { |
26b39276 AD |
5520 | adapter->q_vector[i]->cpu = -1; |
5521 | igb_update_dca(adapter->q_vector[i]); | |
fe4506b6 JC |
5522 | } |
5523 | } | |
5524 | ||
5525 | static int __igb_notify_dca(struct device *dev, void *data) | |
5526 | { | |
5527 | struct net_device *netdev = dev_get_drvdata(dev); | |
5528 | struct igb_adapter *adapter = netdev_priv(netdev); | |
090b1795 | 5529 | struct pci_dev *pdev = adapter->pdev; |
fe4506b6 JC |
5530 | struct e1000_hw *hw = &adapter->hw; |
5531 | unsigned long event = *(unsigned long *)data; | |
5532 | ||
5533 | switch (event) { | |
5534 | case DCA_PROVIDER_ADD: | |
5535 | /* if already enabled, don't do it again */ | |
7dfc16fa | 5536 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) |
fe4506b6 | 5537 | break; |
fe4506b6 | 5538 | if (dca_add_requester(dev) == 0) { |
bbd98fe4 | 5539 | adapter->flags |= IGB_FLAG_DCA_ENABLED; |
090b1795 | 5540 | dev_info(&pdev->dev, "DCA enabled\n"); |
fe4506b6 JC |
5541 | igb_setup_dca(adapter); |
5542 | break; | |
5543 | } | |
5544 | /* Fall Through since DCA is disabled. */ | |
5545 | case DCA_PROVIDER_REMOVE: | |
7dfc16fa | 5546 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) { |
fe4506b6 | 5547 | /* without this a class_device is left |
b980ac18 JK |
5548 | * hanging around in the sysfs model |
5549 | */ | |
fe4506b6 | 5550 | dca_remove_requester(dev); |
090b1795 | 5551 | dev_info(&pdev->dev, "DCA disabled\n"); |
7dfc16fa | 5552 | adapter->flags &= ~IGB_FLAG_DCA_ENABLED; |
cbd347ad | 5553 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE); |
fe4506b6 JC |
5554 | } |
5555 | break; | |
5556 | } | |
bbd98fe4 | 5557 | |
fe4506b6 | 5558 | return 0; |
9d5c8243 AK |
5559 | } |
5560 | ||
fe4506b6 | 5561 | static int igb_notify_dca(struct notifier_block *nb, unsigned long event, |
b980ac18 | 5562 | void *p) |
fe4506b6 JC |
5563 | { |
5564 | int ret_val; | |
5565 | ||
5566 | ret_val = driver_for_each_device(&igb_driver.driver, NULL, &event, | |
b980ac18 | 5567 | __igb_notify_dca); |
fe4506b6 JC |
5568 | |
5569 | return ret_val ? NOTIFY_BAD : NOTIFY_DONE; | |
5570 | } | |
421e02f0 | 5571 | #endif /* CONFIG_IGB_DCA */ |
9d5c8243 | 5572 | |
0224d663 GR |
5573 | #ifdef CONFIG_PCI_IOV |
5574 | static int igb_vf_configure(struct igb_adapter *adapter, int vf) | |
5575 | { | |
5576 | unsigned char mac_addr[ETH_ALEN]; | |
0224d663 | 5577 | |
5ac6f91d | 5578 | eth_zero_addr(mac_addr); |
0224d663 GR |
5579 | igb_set_vf_mac(adapter, vf, mac_addr); |
5580 | ||
70ea4783 LL |
5581 | /* By default spoof check is enabled for all VFs */ |
5582 | adapter->vf_data[vf].spoofchk_enabled = true; | |
5583 | ||
f557147c | 5584 | return 0; |
0224d663 GR |
5585 | } |
5586 | ||
0224d663 | 5587 | #endif |
4ae196df AD |
5588 | static void igb_ping_all_vfs(struct igb_adapter *adapter) |
5589 | { | |
5590 | struct e1000_hw *hw = &adapter->hw; | |
5591 | u32 ping; | |
5592 | int i; | |
5593 | ||
5594 | for (i = 0 ; i < adapter->vfs_allocated_count; i++) { | |
5595 | ping = E1000_PF_CONTROL_MSG; | |
f2ca0dbe | 5596 | if (adapter->vf_data[i].flags & IGB_VF_FLAG_CTS) |
4ae196df AD |
5597 | ping |= E1000_VT_MSGTYPE_CTS; |
5598 | igb_write_mbx(hw, &ping, 1, i); | |
5599 | } | |
5600 | } | |
5601 | ||
7d5753f0 AD |
5602 | static int igb_set_vf_promisc(struct igb_adapter *adapter, u32 *msgbuf, u32 vf) |
5603 | { | |
5604 | struct e1000_hw *hw = &adapter->hw; | |
5605 | u32 vmolr = rd32(E1000_VMOLR(vf)); | |
5606 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; | |
5607 | ||
d85b9004 | 5608 | vf_data->flags &= ~(IGB_VF_FLAG_UNI_PROMISC | |
b980ac18 | 5609 | IGB_VF_FLAG_MULTI_PROMISC); |
7d5753f0 AD |
5610 | vmolr &= ~(E1000_VMOLR_ROPE | E1000_VMOLR_ROMPE | E1000_VMOLR_MPME); |
5611 | ||
5612 | if (*msgbuf & E1000_VF_SET_PROMISC_MULTICAST) { | |
5613 | vmolr |= E1000_VMOLR_MPME; | |
d85b9004 | 5614 | vf_data->flags |= IGB_VF_FLAG_MULTI_PROMISC; |
7d5753f0 AD |
5615 | *msgbuf &= ~E1000_VF_SET_PROMISC_MULTICAST; |
5616 | } else { | |
b980ac18 | 5617 | /* if we have hashes and we are clearing a multicast promisc |
7d5753f0 AD |
5618 | * flag we need to write the hashes to the MTA as this step |
5619 | * was previously skipped | |
5620 | */ | |
5621 | if (vf_data->num_vf_mc_hashes > 30) { | |
5622 | vmolr |= E1000_VMOLR_MPME; | |
5623 | } else if (vf_data->num_vf_mc_hashes) { | |
5624 | int j; | |
9005df38 | 5625 | |
7d5753f0 AD |
5626 | vmolr |= E1000_VMOLR_ROMPE; |
5627 | for (j = 0; j < vf_data->num_vf_mc_hashes; j++) | |
5628 | igb_mta_set(hw, vf_data->vf_mc_hashes[j]); | |
5629 | } | |
5630 | } | |
5631 | ||
5632 | wr32(E1000_VMOLR(vf), vmolr); | |
5633 | ||
5634 | /* there are flags left unprocessed, likely not supported */ | |
5635 | if (*msgbuf & E1000_VT_MSGINFO_MASK) | |
5636 | return -EINVAL; | |
5637 | ||
5638 | return 0; | |
7d5753f0 AD |
5639 | } |
5640 | ||
4ae196df AD |
5641 | static int igb_set_vf_multicasts(struct igb_adapter *adapter, |
5642 | u32 *msgbuf, u32 vf) | |
5643 | { | |
5644 | int n = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT; | |
5645 | u16 *hash_list = (u16 *)&msgbuf[1]; | |
5646 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; | |
5647 | int i; | |
5648 | ||
7d5753f0 | 5649 | /* salt away the number of multicast addresses assigned |
4ae196df AD |
5650 | * to this VF for later use to restore when the PF multi cast |
5651 | * list changes | |
5652 | */ | |
5653 | vf_data->num_vf_mc_hashes = n; | |
5654 | ||
7d5753f0 AD |
5655 | /* only up to 30 hash values supported */ |
5656 | if (n > 30) | |
5657 | n = 30; | |
5658 | ||
5659 | /* store the hashes for later use */ | |
4ae196df | 5660 | for (i = 0; i < n; i++) |
a419aef8 | 5661 | vf_data->vf_mc_hashes[i] = hash_list[i]; |
4ae196df AD |
5662 | |
5663 | /* Flush and reset the mta with the new values */ | |
ff41f8dc | 5664 | igb_set_rx_mode(adapter->netdev); |
4ae196df AD |
5665 | |
5666 | return 0; | |
5667 | } | |
5668 | ||
5669 | static void igb_restore_vf_multicasts(struct igb_adapter *adapter) | |
5670 | { | |
5671 | struct e1000_hw *hw = &adapter->hw; | |
5672 | struct vf_data_storage *vf_data; | |
5673 | int i, j; | |
5674 | ||
5675 | for (i = 0; i < adapter->vfs_allocated_count; i++) { | |
7d5753f0 | 5676 | u32 vmolr = rd32(E1000_VMOLR(i)); |
9005df38 | 5677 | |
7d5753f0 AD |
5678 | vmolr &= ~(E1000_VMOLR_ROMPE | E1000_VMOLR_MPME); |
5679 | ||
4ae196df | 5680 | vf_data = &adapter->vf_data[i]; |
7d5753f0 AD |
5681 | |
5682 | if ((vf_data->num_vf_mc_hashes > 30) || | |
5683 | (vf_data->flags & IGB_VF_FLAG_MULTI_PROMISC)) { | |
5684 | vmolr |= E1000_VMOLR_MPME; | |
5685 | } else if (vf_data->num_vf_mc_hashes) { | |
5686 | vmolr |= E1000_VMOLR_ROMPE; | |
5687 | for (j = 0; j < vf_data->num_vf_mc_hashes; j++) | |
5688 | igb_mta_set(hw, vf_data->vf_mc_hashes[j]); | |
5689 | } | |
5690 | wr32(E1000_VMOLR(i), vmolr); | |
4ae196df AD |
5691 | } |
5692 | } | |
5693 | ||
5694 | static void igb_clear_vf_vfta(struct igb_adapter *adapter, u32 vf) | |
5695 | { | |
5696 | struct e1000_hw *hw = &adapter->hw; | |
5697 | u32 pool_mask, reg, vid; | |
5698 | int i; | |
5699 | ||
5700 | pool_mask = 1 << (E1000_VLVF_POOLSEL_SHIFT + vf); | |
5701 | ||
5702 | /* Find the vlan filter for this id */ | |
5703 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { | |
5704 | reg = rd32(E1000_VLVF(i)); | |
5705 | ||
5706 | /* remove the vf from the pool */ | |
5707 | reg &= ~pool_mask; | |
5708 | ||
5709 | /* if pool is empty then remove entry from vfta */ | |
5710 | if (!(reg & E1000_VLVF_POOLSEL_MASK) && | |
5711 | (reg & E1000_VLVF_VLANID_ENABLE)) { | |
5712 | reg = 0; | |
5713 | vid = reg & E1000_VLVF_VLANID_MASK; | |
5714 | igb_vfta_set(hw, vid, false); | |
5715 | } | |
5716 | ||
5717 | wr32(E1000_VLVF(i), reg); | |
5718 | } | |
ae641bdc AD |
5719 | |
5720 | adapter->vf_data[vf].vlans_enabled = 0; | |
4ae196df AD |
5721 | } |
5722 | ||
5723 | static s32 igb_vlvf_set(struct igb_adapter *adapter, u32 vid, bool add, u32 vf) | |
5724 | { | |
5725 | struct e1000_hw *hw = &adapter->hw; | |
5726 | u32 reg, i; | |
5727 | ||
51466239 AD |
5728 | /* The vlvf table only exists on 82576 hardware and newer */ |
5729 | if (hw->mac.type < e1000_82576) | |
5730 | return -1; | |
5731 | ||
5732 | /* we only need to do this if VMDq is enabled */ | |
4ae196df AD |
5733 | if (!adapter->vfs_allocated_count) |
5734 | return -1; | |
5735 | ||
5736 | /* Find the vlan filter for this id */ | |
5737 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { | |
5738 | reg = rd32(E1000_VLVF(i)); | |
5739 | if ((reg & E1000_VLVF_VLANID_ENABLE) && | |
5740 | vid == (reg & E1000_VLVF_VLANID_MASK)) | |
5741 | break; | |
5742 | } | |
5743 | ||
5744 | if (add) { | |
5745 | if (i == E1000_VLVF_ARRAY_SIZE) { | |
5746 | /* Did not find a matching VLAN ID entry that was | |
5747 | * enabled. Search for a free filter entry, i.e. | |
5748 | * one without the enable bit set | |
5749 | */ | |
5750 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { | |
5751 | reg = rd32(E1000_VLVF(i)); | |
5752 | if (!(reg & E1000_VLVF_VLANID_ENABLE)) | |
5753 | break; | |
5754 | } | |
5755 | } | |
5756 | if (i < E1000_VLVF_ARRAY_SIZE) { | |
5757 | /* Found an enabled/available entry */ | |
5758 | reg |= 1 << (E1000_VLVF_POOLSEL_SHIFT + vf); | |
5759 | ||
5760 | /* if !enabled we need to set this up in vfta */ | |
5761 | if (!(reg & E1000_VLVF_VLANID_ENABLE)) { | |
51466239 AD |
5762 | /* add VID to filter table */ |
5763 | igb_vfta_set(hw, vid, true); | |
4ae196df AD |
5764 | reg |= E1000_VLVF_VLANID_ENABLE; |
5765 | } | |
cad6d05f AD |
5766 | reg &= ~E1000_VLVF_VLANID_MASK; |
5767 | reg |= vid; | |
4ae196df | 5768 | wr32(E1000_VLVF(i), reg); |
ae641bdc AD |
5769 | |
5770 | /* do not modify RLPML for PF devices */ | |
5771 | if (vf >= adapter->vfs_allocated_count) | |
5772 | return 0; | |
5773 | ||
5774 | if (!adapter->vf_data[vf].vlans_enabled) { | |
5775 | u32 size; | |
9005df38 | 5776 | |
ae641bdc AD |
5777 | reg = rd32(E1000_VMOLR(vf)); |
5778 | size = reg & E1000_VMOLR_RLPML_MASK; | |
5779 | size += 4; | |
5780 | reg &= ~E1000_VMOLR_RLPML_MASK; | |
5781 | reg |= size; | |
5782 | wr32(E1000_VMOLR(vf), reg); | |
5783 | } | |
ae641bdc | 5784 | |
51466239 | 5785 | adapter->vf_data[vf].vlans_enabled++; |
4ae196df AD |
5786 | } |
5787 | } else { | |
5788 | if (i < E1000_VLVF_ARRAY_SIZE) { | |
5789 | /* remove vf from the pool */ | |
5790 | reg &= ~(1 << (E1000_VLVF_POOLSEL_SHIFT + vf)); | |
5791 | /* if pool is empty then remove entry from vfta */ | |
5792 | if (!(reg & E1000_VLVF_POOLSEL_MASK)) { | |
5793 | reg = 0; | |
5794 | igb_vfta_set(hw, vid, false); | |
5795 | } | |
5796 | wr32(E1000_VLVF(i), reg); | |
ae641bdc AD |
5797 | |
5798 | /* do not modify RLPML for PF devices */ | |
5799 | if (vf >= adapter->vfs_allocated_count) | |
5800 | return 0; | |
5801 | ||
5802 | adapter->vf_data[vf].vlans_enabled--; | |
5803 | if (!adapter->vf_data[vf].vlans_enabled) { | |
5804 | u32 size; | |
9005df38 | 5805 | |
ae641bdc AD |
5806 | reg = rd32(E1000_VMOLR(vf)); |
5807 | size = reg & E1000_VMOLR_RLPML_MASK; | |
5808 | size -= 4; | |
5809 | reg &= ~E1000_VMOLR_RLPML_MASK; | |
5810 | reg |= size; | |
5811 | wr32(E1000_VMOLR(vf), reg); | |
5812 | } | |
4ae196df AD |
5813 | } |
5814 | } | |
8151d294 WM |
5815 | return 0; |
5816 | } | |
5817 | ||
5818 | static void igb_set_vmvir(struct igb_adapter *adapter, u32 vid, u32 vf) | |
5819 | { | |
5820 | struct e1000_hw *hw = &adapter->hw; | |
5821 | ||
5822 | if (vid) | |
5823 | wr32(E1000_VMVIR(vf), (vid | E1000_VMVIR_VLANA_DEFAULT)); | |
5824 | else | |
5825 | wr32(E1000_VMVIR(vf), 0); | |
5826 | } | |
5827 | ||
5828 | static int igb_ndo_set_vf_vlan(struct net_device *netdev, | |
5829 | int vf, u16 vlan, u8 qos) | |
5830 | { | |
5831 | int err = 0; | |
5832 | struct igb_adapter *adapter = netdev_priv(netdev); | |
5833 | ||
5834 | if ((vf >= adapter->vfs_allocated_count) || (vlan > 4095) || (qos > 7)) | |
5835 | return -EINVAL; | |
5836 | if (vlan || qos) { | |
5837 | err = igb_vlvf_set(adapter, vlan, !!vlan, vf); | |
5838 | if (err) | |
5839 | goto out; | |
5840 | igb_set_vmvir(adapter, vlan | (qos << VLAN_PRIO_SHIFT), vf); | |
5841 | igb_set_vmolr(adapter, vf, !vlan); | |
5842 | adapter->vf_data[vf].pf_vlan = vlan; | |
5843 | adapter->vf_data[vf].pf_qos = qos; | |
5844 | dev_info(&adapter->pdev->dev, | |
5845 | "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf); | |
5846 | if (test_bit(__IGB_DOWN, &adapter->state)) { | |
5847 | dev_warn(&adapter->pdev->dev, | |
b980ac18 | 5848 | "The VF VLAN has been set, but the PF device is not up.\n"); |
8151d294 | 5849 | dev_warn(&adapter->pdev->dev, |
b980ac18 | 5850 | "Bring the PF device up before attempting to use the VF device.\n"); |
8151d294 WM |
5851 | } |
5852 | } else { | |
5853 | igb_vlvf_set(adapter, adapter->vf_data[vf].pf_vlan, | |
b980ac18 | 5854 | false, vf); |
8151d294 WM |
5855 | igb_set_vmvir(adapter, vlan, vf); |
5856 | igb_set_vmolr(adapter, vf, true); | |
5857 | adapter->vf_data[vf].pf_vlan = 0; | |
5858 | adapter->vf_data[vf].pf_qos = 0; | |
b980ac18 | 5859 | } |
8151d294 | 5860 | out: |
b980ac18 | 5861 | return err; |
4ae196df AD |
5862 | } |
5863 | ||
6f3dc319 GR |
5864 | static int igb_find_vlvf_entry(struct igb_adapter *adapter, int vid) |
5865 | { | |
5866 | struct e1000_hw *hw = &adapter->hw; | |
5867 | int i; | |
5868 | u32 reg; | |
5869 | ||
5870 | /* Find the vlan filter for this id */ | |
5871 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { | |
5872 | reg = rd32(E1000_VLVF(i)); | |
5873 | if ((reg & E1000_VLVF_VLANID_ENABLE) && | |
5874 | vid == (reg & E1000_VLVF_VLANID_MASK)) | |
5875 | break; | |
5876 | } | |
5877 | ||
5878 | if (i >= E1000_VLVF_ARRAY_SIZE) | |
5879 | i = -1; | |
5880 | ||
5881 | return i; | |
5882 | } | |
5883 | ||
4ae196df AD |
5884 | static int igb_set_vf_vlan(struct igb_adapter *adapter, u32 *msgbuf, u32 vf) |
5885 | { | |
6f3dc319 | 5886 | struct e1000_hw *hw = &adapter->hw; |
4ae196df AD |
5887 | int add = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT; |
5888 | int vid = (msgbuf[1] & E1000_VLVF_VLANID_MASK); | |
6f3dc319 | 5889 | int err = 0; |
4ae196df | 5890 | |
6f3dc319 GR |
5891 | /* If in promiscuous mode we need to make sure the PF also has |
5892 | * the VLAN filter set. | |
5893 | */ | |
5894 | if (add && (adapter->netdev->flags & IFF_PROMISC)) | |
5895 | err = igb_vlvf_set(adapter, vid, add, | |
5896 | adapter->vfs_allocated_count); | |
5897 | if (err) | |
5898 | goto out; | |
5899 | ||
5900 | err = igb_vlvf_set(adapter, vid, add, vf); | |
5901 | ||
5902 | if (err) | |
5903 | goto out; | |
5904 | ||
5905 | /* Go through all the checks to see if the VLAN filter should | |
5906 | * be wiped completely. | |
5907 | */ | |
5908 | if (!add && (adapter->netdev->flags & IFF_PROMISC)) { | |
5909 | u32 vlvf, bits; | |
6f3dc319 | 5910 | int regndx = igb_find_vlvf_entry(adapter, vid); |
9005df38 | 5911 | |
6f3dc319 GR |
5912 | if (regndx < 0) |
5913 | goto out; | |
5914 | /* See if any other pools are set for this VLAN filter | |
5915 | * entry other than the PF. | |
5916 | */ | |
5917 | vlvf = bits = rd32(E1000_VLVF(regndx)); | |
5918 | bits &= 1 << (E1000_VLVF_POOLSEL_SHIFT + | |
5919 | adapter->vfs_allocated_count); | |
5920 | /* If the filter was removed then ensure PF pool bit | |
5921 | * is cleared if the PF only added itself to the pool | |
5922 | * because the PF is in promiscuous mode. | |
5923 | */ | |
5924 | if ((vlvf & VLAN_VID_MASK) == vid && | |
5925 | !test_bit(vid, adapter->active_vlans) && | |
5926 | !bits) | |
5927 | igb_vlvf_set(adapter, vid, add, | |
5928 | adapter->vfs_allocated_count); | |
5929 | } | |
5930 | ||
5931 | out: | |
5932 | return err; | |
4ae196df AD |
5933 | } |
5934 | ||
f2ca0dbe | 5935 | static inline void igb_vf_reset(struct igb_adapter *adapter, u32 vf) |
4ae196df | 5936 | { |
8fa7e0f7 GR |
5937 | /* clear flags - except flag that indicates PF has set the MAC */ |
5938 | adapter->vf_data[vf].flags &= IGB_VF_FLAG_PF_SET_MAC; | |
f2ca0dbe | 5939 | adapter->vf_data[vf].last_nack = jiffies; |
4ae196df AD |
5940 | |
5941 | /* reset offloads to defaults */ | |
8151d294 | 5942 | igb_set_vmolr(adapter, vf, true); |
4ae196df AD |
5943 | |
5944 | /* reset vlans for device */ | |
5945 | igb_clear_vf_vfta(adapter, vf); | |
8151d294 WM |
5946 | if (adapter->vf_data[vf].pf_vlan) |
5947 | igb_ndo_set_vf_vlan(adapter->netdev, vf, | |
5948 | adapter->vf_data[vf].pf_vlan, | |
5949 | adapter->vf_data[vf].pf_qos); | |
5950 | else | |
5951 | igb_clear_vf_vfta(adapter, vf); | |
4ae196df AD |
5952 | |
5953 | /* reset multicast table array for vf */ | |
5954 | adapter->vf_data[vf].num_vf_mc_hashes = 0; | |
5955 | ||
5956 | /* Flush and reset the mta with the new values */ | |
ff41f8dc | 5957 | igb_set_rx_mode(adapter->netdev); |
4ae196df AD |
5958 | } |
5959 | ||
f2ca0dbe AD |
5960 | static void igb_vf_reset_event(struct igb_adapter *adapter, u32 vf) |
5961 | { | |
5962 | unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses; | |
5963 | ||
5ac6f91d | 5964 | /* clear mac address as we were hotplug removed/added */ |
8151d294 | 5965 | if (!(adapter->vf_data[vf].flags & IGB_VF_FLAG_PF_SET_MAC)) |
5ac6f91d | 5966 | eth_zero_addr(vf_mac); |
f2ca0dbe AD |
5967 | |
5968 | /* process remaining reset events */ | |
5969 | igb_vf_reset(adapter, vf); | |
5970 | } | |
5971 | ||
5972 | static void igb_vf_reset_msg(struct igb_adapter *adapter, u32 vf) | |
4ae196df AD |
5973 | { |
5974 | struct e1000_hw *hw = &adapter->hw; | |
5975 | unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses; | |
ff41f8dc | 5976 | int rar_entry = hw->mac.rar_entry_count - (vf + 1); |
4ae196df AD |
5977 | u32 reg, msgbuf[3]; |
5978 | u8 *addr = (u8 *)(&msgbuf[1]); | |
5979 | ||
5980 | /* process all the same items cleared in a function level reset */ | |
f2ca0dbe | 5981 | igb_vf_reset(adapter, vf); |
4ae196df AD |
5982 | |
5983 | /* set vf mac address */ | |
26ad9178 | 5984 | igb_rar_set_qsel(adapter, vf_mac, rar_entry, vf); |
4ae196df AD |
5985 | |
5986 | /* enable transmit and receive for vf */ | |
5987 | reg = rd32(E1000_VFTE); | |
5988 | wr32(E1000_VFTE, reg | (1 << vf)); | |
5989 | reg = rd32(E1000_VFRE); | |
5990 | wr32(E1000_VFRE, reg | (1 << vf)); | |
5991 | ||
8fa7e0f7 | 5992 | adapter->vf_data[vf].flags |= IGB_VF_FLAG_CTS; |
4ae196df AD |
5993 | |
5994 | /* reply to reset with ack and vf mac address */ | |
5995 | msgbuf[0] = E1000_VF_RESET | E1000_VT_MSGTYPE_ACK; | |
d458cdf7 | 5996 | memcpy(addr, vf_mac, ETH_ALEN); |
4ae196df AD |
5997 | igb_write_mbx(hw, msgbuf, 3, vf); |
5998 | } | |
5999 | ||
6000 | static int igb_set_vf_mac_addr(struct igb_adapter *adapter, u32 *msg, int vf) | |
6001 | { | |
b980ac18 | 6002 | /* The VF MAC Address is stored in a packed array of bytes |
de42edde GR |
6003 | * starting at the second 32 bit word of the msg array |
6004 | */ | |
f2ca0dbe AD |
6005 | unsigned char *addr = (char *)&msg[1]; |
6006 | int err = -1; | |
4ae196df | 6007 | |
f2ca0dbe AD |
6008 | if (is_valid_ether_addr(addr)) |
6009 | err = igb_set_vf_mac(adapter, vf, addr); | |
4ae196df | 6010 | |
f2ca0dbe | 6011 | return err; |
4ae196df AD |
6012 | } |
6013 | ||
6014 | static void igb_rcv_ack_from_vf(struct igb_adapter *adapter, u32 vf) | |
6015 | { | |
6016 | struct e1000_hw *hw = &adapter->hw; | |
f2ca0dbe | 6017 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; |
4ae196df AD |
6018 | u32 msg = E1000_VT_MSGTYPE_NACK; |
6019 | ||
6020 | /* if device isn't clear to send it shouldn't be reading either */ | |
f2ca0dbe AD |
6021 | if (!(vf_data->flags & IGB_VF_FLAG_CTS) && |
6022 | time_after(jiffies, vf_data->last_nack + (2 * HZ))) { | |
4ae196df | 6023 | igb_write_mbx(hw, &msg, 1, vf); |
f2ca0dbe | 6024 | vf_data->last_nack = jiffies; |
4ae196df AD |
6025 | } |
6026 | } | |
6027 | ||
f2ca0dbe | 6028 | static void igb_rcv_msg_from_vf(struct igb_adapter *adapter, u32 vf) |
4ae196df | 6029 | { |
f2ca0dbe AD |
6030 | struct pci_dev *pdev = adapter->pdev; |
6031 | u32 msgbuf[E1000_VFMAILBOX_SIZE]; | |
4ae196df | 6032 | struct e1000_hw *hw = &adapter->hw; |
f2ca0dbe | 6033 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; |
4ae196df AD |
6034 | s32 retval; |
6035 | ||
f2ca0dbe | 6036 | retval = igb_read_mbx(hw, msgbuf, E1000_VFMAILBOX_SIZE, vf); |
4ae196df | 6037 | |
fef45f4c AD |
6038 | if (retval) { |
6039 | /* if receive failed revoke VF CTS stats and restart init */ | |
f2ca0dbe | 6040 | dev_err(&pdev->dev, "Error receiving message from VF\n"); |
fef45f4c AD |
6041 | vf_data->flags &= ~IGB_VF_FLAG_CTS; |
6042 | if (!time_after(jiffies, vf_data->last_nack + (2 * HZ))) | |
6043 | return; | |
6044 | goto out; | |
6045 | } | |
4ae196df AD |
6046 | |
6047 | /* this is a message we already processed, do nothing */ | |
6048 | if (msgbuf[0] & (E1000_VT_MSGTYPE_ACK | E1000_VT_MSGTYPE_NACK)) | |
f2ca0dbe | 6049 | return; |
4ae196df | 6050 | |
b980ac18 | 6051 | /* until the vf completes a reset it should not be |
4ae196df AD |
6052 | * allowed to start any configuration. |
6053 | */ | |
4ae196df AD |
6054 | if (msgbuf[0] == E1000_VF_RESET) { |
6055 | igb_vf_reset_msg(adapter, vf); | |
f2ca0dbe | 6056 | return; |
4ae196df AD |
6057 | } |
6058 | ||
f2ca0dbe | 6059 | if (!(vf_data->flags & IGB_VF_FLAG_CTS)) { |
fef45f4c AD |
6060 | if (!time_after(jiffies, vf_data->last_nack + (2 * HZ))) |
6061 | return; | |
6062 | retval = -1; | |
6063 | goto out; | |
4ae196df AD |
6064 | } |
6065 | ||
6066 | switch ((msgbuf[0] & 0xFFFF)) { | |
6067 | case E1000_VF_SET_MAC_ADDR: | |
a6b5ea35 GR |
6068 | retval = -EINVAL; |
6069 | if (!(vf_data->flags & IGB_VF_FLAG_PF_SET_MAC)) | |
6070 | retval = igb_set_vf_mac_addr(adapter, msgbuf, vf); | |
6071 | else | |
6072 | dev_warn(&pdev->dev, | |
b980ac18 JK |
6073 | "VF %d attempted to override administratively set MAC address\nReload the VF driver to resume operations\n", |
6074 | vf); | |
4ae196df | 6075 | break; |
7d5753f0 AD |
6076 | case E1000_VF_SET_PROMISC: |
6077 | retval = igb_set_vf_promisc(adapter, msgbuf, vf); | |
6078 | break; | |
4ae196df AD |
6079 | case E1000_VF_SET_MULTICAST: |
6080 | retval = igb_set_vf_multicasts(adapter, msgbuf, vf); | |
6081 | break; | |
6082 | case E1000_VF_SET_LPE: | |
6083 | retval = igb_set_vf_rlpml(adapter, msgbuf[1], vf); | |
6084 | break; | |
6085 | case E1000_VF_SET_VLAN: | |
a6b5ea35 GR |
6086 | retval = -1; |
6087 | if (vf_data->pf_vlan) | |
6088 | dev_warn(&pdev->dev, | |
b980ac18 JK |
6089 | "VF %d attempted to override administratively set VLAN tag\nReload the VF driver to resume operations\n", |
6090 | vf); | |
8151d294 WM |
6091 | else |
6092 | retval = igb_set_vf_vlan(adapter, msgbuf, vf); | |
4ae196df AD |
6093 | break; |
6094 | default: | |
090b1795 | 6095 | dev_err(&pdev->dev, "Unhandled Msg %08x\n", msgbuf[0]); |
4ae196df AD |
6096 | retval = -1; |
6097 | break; | |
6098 | } | |
6099 | ||
fef45f4c AD |
6100 | msgbuf[0] |= E1000_VT_MSGTYPE_CTS; |
6101 | out: | |
4ae196df AD |
6102 | /* notify the VF of the results of what it sent us */ |
6103 | if (retval) | |
6104 | msgbuf[0] |= E1000_VT_MSGTYPE_NACK; | |
6105 | else | |
6106 | msgbuf[0] |= E1000_VT_MSGTYPE_ACK; | |
6107 | ||
4ae196df | 6108 | igb_write_mbx(hw, msgbuf, 1, vf); |
f2ca0dbe | 6109 | } |
4ae196df | 6110 | |
f2ca0dbe AD |
6111 | static void igb_msg_task(struct igb_adapter *adapter) |
6112 | { | |
6113 | struct e1000_hw *hw = &adapter->hw; | |
6114 | u32 vf; | |
6115 | ||
6116 | for (vf = 0; vf < adapter->vfs_allocated_count; vf++) { | |
6117 | /* process any reset requests */ | |
6118 | if (!igb_check_for_rst(hw, vf)) | |
6119 | igb_vf_reset_event(adapter, vf); | |
6120 | ||
6121 | /* process any messages pending */ | |
6122 | if (!igb_check_for_msg(hw, vf)) | |
6123 | igb_rcv_msg_from_vf(adapter, vf); | |
6124 | ||
6125 | /* process any acks */ | |
6126 | if (!igb_check_for_ack(hw, vf)) | |
6127 | igb_rcv_ack_from_vf(adapter, vf); | |
6128 | } | |
4ae196df AD |
6129 | } |
6130 | ||
68d480c4 AD |
6131 | /** |
6132 | * igb_set_uta - Set unicast filter table address | |
6133 | * @adapter: board private structure | |
6134 | * | |
6135 | * The unicast table address is a register array of 32-bit registers. | |
6136 | * The table is meant to be used in a way similar to how the MTA is used | |
6137 | * however due to certain limitations in the hardware it is necessary to | |
25985edc LDM |
6138 | * set all the hash bits to 1 and use the VMOLR ROPE bit as a promiscuous |
6139 | * enable bit to allow vlan tag stripping when promiscuous mode is enabled | |
68d480c4 AD |
6140 | **/ |
6141 | static void igb_set_uta(struct igb_adapter *adapter) | |
6142 | { | |
6143 | struct e1000_hw *hw = &adapter->hw; | |
6144 | int i; | |
6145 | ||
6146 | /* The UTA table only exists on 82576 hardware and newer */ | |
6147 | if (hw->mac.type < e1000_82576) | |
6148 | return; | |
6149 | ||
6150 | /* we only need to do this if VMDq is enabled */ | |
6151 | if (!adapter->vfs_allocated_count) | |
6152 | return; | |
6153 | ||
6154 | for (i = 0; i < hw->mac.uta_reg_count; i++) | |
6155 | array_wr32(E1000_UTA, i, ~0); | |
6156 | } | |
6157 | ||
9d5c8243 | 6158 | /** |
b980ac18 JK |
6159 | * igb_intr_msi - Interrupt Handler |
6160 | * @irq: interrupt number | |
6161 | * @data: pointer to a network interface device structure | |
9d5c8243 AK |
6162 | **/ |
6163 | static irqreturn_t igb_intr_msi(int irq, void *data) | |
6164 | { | |
047e0030 AD |
6165 | struct igb_adapter *adapter = data; |
6166 | struct igb_q_vector *q_vector = adapter->q_vector[0]; | |
9d5c8243 AK |
6167 | struct e1000_hw *hw = &adapter->hw; |
6168 | /* read ICR disables interrupts using IAM */ | |
6169 | u32 icr = rd32(E1000_ICR); | |
6170 | ||
047e0030 | 6171 | igb_write_itr(q_vector); |
9d5c8243 | 6172 | |
7f081d40 AD |
6173 | if (icr & E1000_ICR_DRSTA) |
6174 | schedule_work(&adapter->reset_task); | |
6175 | ||
047e0030 | 6176 | if (icr & E1000_ICR_DOUTSYNC) { |
dda0e083 AD |
6177 | /* HW is reporting DMA is out of sync */ |
6178 | adapter->stats.doosync++; | |
6179 | } | |
6180 | ||
9d5c8243 AK |
6181 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
6182 | hw->mac.get_link_status = 1; | |
6183 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
6184 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
6185 | } | |
6186 | ||
1f6e8178 MV |
6187 | if (icr & E1000_ICR_TS) { |
6188 | u32 tsicr = rd32(E1000_TSICR); | |
6189 | ||
6190 | if (tsicr & E1000_TSICR_TXTS) { | |
6191 | /* acknowledge the interrupt */ | |
6192 | wr32(E1000_TSICR, E1000_TSICR_TXTS); | |
6193 | /* retrieve hardware timestamp */ | |
6194 | schedule_work(&adapter->ptp_tx_work); | |
6195 | } | |
6196 | } | |
1f6e8178 | 6197 | |
047e0030 | 6198 | napi_schedule(&q_vector->napi); |
9d5c8243 AK |
6199 | |
6200 | return IRQ_HANDLED; | |
6201 | } | |
6202 | ||
6203 | /** | |
b980ac18 JK |
6204 | * igb_intr - Legacy Interrupt Handler |
6205 | * @irq: interrupt number | |
6206 | * @data: pointer to a network interface device structure | |
9d5c8243 AK |
6207 | **/ |
6208 | static irqreturn_t igb_intr(int irq, void *data) | |
6209 | { | |
047e0030 AD |
6210 | struct igb_adapter *adapter = data; |
6211 | struct igb_q_vector *q_vector = adapter->q_vector[0]; | |
9d5c8243 AK |
6212 | struct e1000_hw *hw = &adapter->hw; |
6213 | /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No | |
b980ac18 JK |
6214 | * need for the IMC write |
6215 | */ | |
9d5c8243 | 6216 | u32 icr = rd32(E1000_ICR); |
9d5c8243 AK |
6217 | |
6218 | /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is | |
b980ac18 JK |
6219 | * not set, then the adapter didn't send an interrupt |
6220 | */ | |
9d5c8243 AK |
6221 | if (!(icr & E1000_ICR_INT_ASSERTED)) |
6222 | return IRQ_NONE; | |
6223 | ||
0ba82994 AD |
6224 | igb_write_itr(q_vector); |
6225 | ||
7f081d40 AD |
6226 | if (icr & E1000_ICR_DRSTA) |
6227 | schedule_work(&adapter->reset_task); | |
6228 | ||
047e0030 | 6229 | if (icr & E1000_ICR_DOUTSYNC) { |
dda0e083 AD |
6230 | /* HW is reporting DMA is out of sync */ |
6231 | adapter->stats.doosync++; | |
6232 | } | |
6233 | ||
9d5c8243 AK |
6234 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
6235 | hw->mac.get_link_status = 1; | |
6236 | /* guard against interrupt when we're going down */ | |
6237 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
6238 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
6239 | } | |
6240 | ||
1f6e8178 MV |
6241 | if (icr & E1000_ICR_TS) { |
6242 | u32 tsicr = rd32(E1000_TSICR); | |
6243 | ||
6244 | if (tsicr & E1000_TSICR_TXTS) { | |
6245 | /* acknowledge the interrupt */ | |
6246 | wr32(E1000_TSICR, E1000_TSICR_TXTS); | |
6247 | /* retrieve hardware timestamp */ | |
6248 | schedule_work(&adapter->ptp_tx_work); | |
6249 | } | |
6250 | } | |
1f6e8178 | 6251 | |
047e0030 | 6252 | napi_schedule(&q_vector->napi); |
9d5c8243 AK |
6253 | |
6254 | return IRQ_HANDLED; | |
6255 | } | |
6256 | ||
c50b52a0 | 6257 | static void igb_ring_irq_enable(struct igb_q_vector *q_vector) |
9d5c8243 | 6258 | { |
047e0030 | 6259 | struct igb_adapter *adapter = q_vector->adapter; |
46544258 | 6260 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 | 6261 | |
0ba82994 AD |
6262 | if ((q_vector->rx.ring && (adapter->rx_itr_setting & 3)) || |
6263 | (!q_vector->rx.ring && (adapter->tx_itr_setting & 3))) { | |
6264 | if ((adapter->num_q_vectors == 1) && !adapter->vf_data) | |
6265 | igb_set_itr(q_vector); | |
46544258 | 6266 | else |
047e0030 | 6267 | igb_update_ring_itr(q_vector); |
9d5c8243 AK |
6268 | } |
6269 | ||
46544258 | 6270 | if (!test_bit(__IGB_DOWN, &adapter->state)) { |
cd14ef54 | 6271 | if (adapter->flags & IGB_FLAG_HAS_MSIX) |
047e0030 | 6272 | wr32(E1000_EIMS, q_vector->eims_value); |
46544258 AD |
6273 | else |
6274 | igb_irq_enable(adapter); | |
6275 | } | |
9d5c8243 AK |
6276 | } |
6277 | ||
46544258 | 6278 | /** |
b980ac18 JK |
6279 | * igb_poll - NAPI Rx polling callback |
6280 | * @napi: napi polling structure | |
6281 | * @budget: count of how many packets we should handle | |
46544258 AD |
6282 | **/ |
6283 | static int igb_poll(struct napi_struct *napi, int budget) | |
9d5c8243 | 6284 | { |
047e0030 | 6285 | struct igb_q_vector *q_vector = container_of(napi, |
b980ac18 JK |
6286 | struct igb_q_vector, |
6287 | napi); | |
16eb8815 | 6288 | bool clean_complete = true; |
9d5c8243 | 6289 | |
421e02f0 | 6290 | #ifdef CONFIG_IGB_DCA |
047e0030 AD |
6291 | if (q_vector->adapter->flags & IGB_FLAG_DCA_ENABLED) |
6292 | igb_update_dca(q_vector); | |
fe4506b6 | 6293 | #endif |
0ba82994 | 6294 | if (q_vector->tx.ring) |
13fde97a | 6295 | clean_complete = igb_clean_tx_irq(q_vector); |
9d5c8243 | 6296 | |
0ba82994 | 6297 | if (q_vector->rx.ring) |
cd392f5c | 6298 | clean_complete &= igb_clean_rx_irq(q_vector, budget); |
047e0030 | 6299 | |
16eb8815 AD |
6300 | /* If all work not completed, return budget and keep polling */ |
6301 | if (!clean_complete) | |
6302 | return budget; | |
46544258 | 6303 | |
9d5c8243 | 6304 | /* If not enough Rx work done, exit the polling mode */ |
16eb8815 AD |
6305 | napi_complete(napi); |
6306 | igb_ring_irq_enable(q_vector); | |
9d5c8243 | 6307 | |
16eb8815 | 6308 | return 0; |
9d5c8243 | 6309 | } |
6d8126f9 | 6310 | |
9d5c8243 | 6311 | /** |
b980ac18 JK |
6312 | * igb_clean_tx_irq - Reclaim resources after transmit completes |
6313 | * @q_vector: pointer to q_vector containing needed info | |
49ce9c2c | 6314 | * |
b980ac18 | 6315 | * returns true if ring is completely cleaned |
9d5c8243 | 6316 | **/ |
047e0030 | 6317 | static bool igb_clean_tx_irq(struct igb_q_vector *q_vector) |
9d5c8243 | 6318 | { |
047e0030 | 6319 | struct igb_adapter *adapter = q_vector->adapter; |
0ba82994 | 6320 | struct igb_ring *tx_ring = q_vector->tx.ring; |
06034649 | 6321 | struct igb_tx_buffer *tx_buffer; |
f4128785 | 6322 | union e1000_adv_tx_desc *tx_desc; |
9d5c8243 | 6323 | unsigned int total_bytes = 0, total_packets = 0; |
0ba82994 | 6324 | unsigned int budget = q_vector->tx.work_limit; |
8542db05 | 6325 | unsigned int i = tx_ring->next_to_clean; |
9d5c8243 | 6326 | |
13fde97a AD |
6327 | if (test_bit(__IGB_DOWN, &adapter->state)) |
6328 | return true; | |
0e014cb1 | 6329 | |
06034649 | 6330 | tx_buffer = &tx_ring->tx_buffer_info[i]; |
13fde97a | 6331 | tx_desc = IGB_TX_DESC(tx_ring, i); |
8542db05 | 6332 | i -= tx_ring->count; |
9d5c8243 | 6333 | |
f4128785 AD |
6334 | do { |
6335 | union e1000_adv_tx_desc *eop_desc = tx_buffer->next_to_watch; | |
8542db05 AD |
6336 | |
6337 | /* if next_to_watch is not set then there is no work pending */ | |
6338 | if (!eop_desc) | |
6339 | break; | |
13fde97a | 6340 | |
f4128785 | 6341 | /* prevent any other reads prior to eop_desc */ |
70d289bc | 6342 | read_barrier_depends(); |
f4128785 | 6343 | |
13fde97a AD |
6344 | /* if DD is not set pending work has not been completed */ |
6345 | if (!(eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD))) | |
6346 | break; | |
6347 | ||
8542db05 AD |
6348 | /* clear next_to_watch to prevent false hangs */ |
6349 | tx_buffer->next_to_watch = NULL; | |
9d5c8243 | 6350 | |
ebe42d16 AD |
6351 | /* update the statistics for this packet */ |
6352 | total_bytes += tx_buffer->bytecount; | |
6353 | total_packets += tx_buffer->gso_segs; | |
13fde97a | 6354 | |
ebe42d16 AD |
6355 | /* free the skb */ |
6356 | dev_kfree_skb_any(tx_buffer->skb); | |
13fde97a | 6357 | |
ebe42d16 AD |
6358 | /* unmap skb header data */ |
6359 | dma_unmap_single(tx_ring->dev, | |
c9f14bf3 AD |
6360 | dma_unmap_addr(tx_buffer, dma), |
6361 | dma_unmap_len(tx_buffer, len), | |
ebe42d16 AD |
6362 | DMA_TO_DEVICE); |
6363 | ||
c9f14bf3 AD |
6364 | /* clear tx_buffer data */ |
6365 | tx_buffer->skb = NULL; | |
6366 | dma_unmap_len_set(tx_buffer, len, 0); | |
6367 | ||
ebe42d16 AD |
6368 | /* clear last DMA location and unmap remaining buffers */ |
6369 | while (tx_desc != eop_desc) { | |
13fde97a AD |
6370 | tx_buffer++; |
6371 | tx_desc++; | |
9d5c8243 | 6372 | i++; |
8542db05 AD |
6373 | if (unlikely(!i)) { |
6374 | i -= tx_ring->count; | |
06034649 | 6375 | tx_buffer = tx_ring->tx_buffer_info; |
13fde97a AD |
6376 | tx_desc = IGB_TX_DESC(tx_ring, 0); |
6377 | } | |
ebe42d16 AD |
6378 | |
6379 | /* unmap any remaining paged data */ | |
c9f14bf3 | 6380 | if (dma_unmap_len(tx_buffer, len)) { |
ebe42d16 | 6381 | dma_unmap_page(tx_ring->dev, |
c9f14bf3 AD |
6382 | dma_unmap_addr(tx_buffer, dma), |
6383 | dma_unmap_len(tx_buffer, len), | |
ebe42d16 | 6384 | DMA_TO_DEVICE); |
c9f14bf3 | 6385 | dma_unmap_len_set(tx_buffer, len, 0); |
ebe42d16 AD |
6386 | } |
6387 | } | |
6388 | ||
ebe42d16 AD |
6389 | /* move us one more past the eop_desc for start of next pkt */ |
6390 | tx_buffer++; | |
6391 | tx_desc++; | |
6392 | i++; | |
6393 | if (unlikely(!i)) { | |
6394 | i -= tx_ring->count; | |
6395 | tx_buffer = tx_ring->tx_buffer_info; | |
6396 | tx_desc = IGB_TX_DESC(tx_ring, 0); | |
6397 | } | |
f4128785 AD |
6398 | |
6399 | /* issue prefetch for next Tx descriptor */ | |
6400 | prefetch(tx_desc); | |
6401 | ||
6402 | /* update budget accounting */ | |
6403 | budget--; | |
6404 | } while (likely(budget)); | |
0e014cb1 | 6405 | |
bdbc0631 ED |
6406 | netdev_tx_completed_queue(txring_txq(tx_ring), |
6407 | total_packets, total_bytes); | |
8542db05 | 6408 | i += tx_ring->count; |
9d5c8243 | 6409 | tx_ring->next_to_clean = i; |
13fde97a AD |
6410 | u64_stats_update_begin(&tx_ring->tx_syncp); |
6411 | tx_ring->tx_stats.bytes += total_bytes; | |
6412 | tx_ring->tx_stats.packets += total_packets; | |
6413 | u64_stats_update_end(&tx_ring->tx_syncp); | |
0ba82994 AD |
6414 | q_vector->tx.total_bytes += total_bytes; |
6415 | q_vector->tx.total_packets += total_packets; | |
9d5c8243 | 6416 | |
6d095fa8 | 6417 | if (test_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags)) { |
13fde97a | 6418 | struct e1000_hw *hw = &adapter->hw; |
12dcd86b | 6419 | |
9d5c8243 | 6420 | /* Detect a transmit hang in hardware, this serializes the |
b980ac18 JK |
6421 | * check with the clearing of time_stamp and movement of i |
6422 | */ | |
6d095fa8 | 6423 | clear_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags); |
f4128785 | 6424 | if (tx_buffer->next_to_watch && |
8542db05 | 6425 | time_after(jiffies, tx_buffer->time_stamp + |
8e95a202 JP |
6426 | (adapter->tx_timeout_factor * HZ)) && |
6427 | !(rd32(E1000_STATUS) & E1000_STATUS_TXOFF)) { | |
9d5c8243 | 6428 | |
9d5c8243 | 6429 | /* detected Tx unit hang */ |
59d71989 | 6430 | dev_err(tx_ring->dev, |
9d5c8243 | 6431 | "Detected Tx Unit Hang\n" |
2d064c06 | 6432 | " Tx Queue <%d>\n" |
9d5c8243 AK |
6433 | " TDH <%x>\n" |
6434 | " TDT <%x>\n" | |
6435 | " next_to_use <%x>\n" | |
6436 | " next_to_clean <%x>\n" | |
9d5c8243 AK |
6437 | "buffer_info[next_to_clean]\n" |
6438 | " time_stamp <%lx>\n" | |
8542db05 | 6439 | " next_to_watch <%p>\n" |
9d5c8243 AK |
6440 | " jiffies <%lx>\n" |
6441 | " desc.status <%x>\n", | |
2d064c06 | 6442 | tx_ring->queue_index, |
238ac817 | 6443 | rd32(E1000_TDH(tx_ring->reg_idx)), |
fce99e34 | 6444 | readl(tx_ring->tail), |
9d5c8243 AK |
6445 | tx_ring->next_to_use, |
6446 | tx_ring->next_to_clean, | |
8542db05 | 6447 | tx_buffer->time_stamp, |
f4128785 | 6448 | tx_buffer->next_to_watch, |
9d5c8243 | 6449 | jiffies, |
f4128785 | 6450 | tx_buffer->next_to_watch->wb.status); |
13fde97a AD |
6451 | netif_stop_subqueue(tx_ring->netdev, |
6452 | tx_ring->queue_index); | |
6453 | ||
6454 | /* we are about to reset, no point in enabling stuff */ | |
6455 | return true; | |
9d5c8243 AK |
6456 | } |
6457 | } | |
13fde97a | 6458 | |
21ba6fe1 | 6459 | #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2) |
13fde97a | 6460 | if (unlikely(total_packets && |
b980ac18 JK |
6461 | netif_carrier_ok(tx_ring->netdev) && |
6462 | igb_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD)) { | |
13fde97a AD |
6463 | /* Make sure that anybody stopping the queue after this |
6464 | * sees the new next_to_clean. | |
6465 | */ | |
6466 | smp_mb(); | |
6467 | if (__netif_subqueue_stopped(tx_ring->netdev, | |
6468 | tx_ring->queue_index) && | |
6469 | !(test_bit(__IGB_DOWN, &adapter->state))) { | |
6470 | netif_wake_subqueue(tx_ring->netdev, | |
6471 | tx_ring->queue_index); | |
6472 | ||
6473 | u64_stats_update_begin(&tx_ring->tx_syncp); | |
6474 | tx_ring->tx_stats.restart_queue++; | |
6475 | u64_stats_update_end(&tx_ring->tx_syncp); | |
6476 | } | |
6477 | } | |
6478 | ||
6479 | return !!budget; | |
9d5c8243 AK |
6480 | } |
6481 | ||
cbc8e55f | 6482 | /** |
b980ac18 JK |
6483 | * igb_reuse_rx_page - page flip buffer and store it back on the ring |
6484 | * @rx_ring: rx descriptor ring to store buffers on | |
6485 | * @old_buff: donor buffer to have page reused | |
cbc8e55f | 6486 | * |
b980ac18 | 6487 | * Synchronizes page for reuse by the adapter |
cbc8e55f AD |
6488 | **/ |
6489 | static void igb_reuse_rx_page(struct igb_ring *rx_ring, | |
6490 | struct igb_rx_buffer *old_buff) | |
6491 | { | |
6492 | struct igb_rx_buffer *new_buff; | |
6493 | u16 nta = rx_ring->next_to_alloc; | |
6494 | ||
6495 | new_buff = &rx_ring->rx_buffer_info[nta]; | |
6496 | ||
6497 | /* update, and store next to alloc */ | |
6498 | nta++; | |
6499 | rx_ring->next_to_alloc = (nta < rx_ring->count) ? nta : 0; | |
6500 | ||
6501 | /* transfer page from old buffer to new buffer */ | |
a1f63473 | 6502 | *new_buff = *old_buff; |
cbc8e55f AD |
6503 | |
6504 | /* sync the buffer for use by the device */ | |
6505 | dma_sync_single_range_for_device(rx_ring->dev, old_buff->dma, | |
6506 | old_buff->page_offset, | |
de78d1f9 | 6507 | IGB_RX_BUFSZ, |
cbc8e55f AD |
6508 | DMA_FROM_DEVICE); |
6509 | } | |
6510 | ||
74e238ea AD |
6511 | static bool igb_can_reuse_rx_page(struct igb_rx_buffer *rx_buffer, |
6512 | struct page *page, | |
6513 | unsigned int truesize) | |
6514 | { | |
6515 | /* avoid re-using remote pages */ | |
6516 | if (unlikely(page_to_nid(page) != numa_node_id())) | |
6517 | return false; | |
6518 | ||
6519 | #if (PAGE_SIZE < 8192) | |
6520 | /* if we are only owner of page we can reuse it */ | |
6521 | if (unlikely(page_count(page) != 1)) | |
6522 | return false; | |
6523 | ||
6524 | /* flip page offset to other buffer */ | |
6525 | rx_buffer->page_offset ^= IGB_RX_BUFSZ; | |
6526 | ||
6527 | /* since we are the only owner of the page and we need to | |
6528 | * increment it, just set the value to 2 in order to avoid | |
6529 | * an unnecessary locked operation | |
6530 | */ | |
6531 | atomic_set(&page->_count, 2); | |
6532 | #else | |
6533 | /* move offset up to the next cache line */ | |
6534 | rx_buffer->page_offset += truesize; | |
6535 | ||
6536 | if (rx_buffer->page_offset > (PAGE_SIZE - IGB_RX_BUFSZ)) | |
6537 | return false; | |
6538 | ||
6539 | /* bump ref count on page before it is given to the stack */ | |
6540 | get_page(page); | |
6541 | #endif | |
6542 | ||
6543 | return true; | |
6544 | } | |
6545 | ||
cbc8e55f | 6546 | /** |
b980ac18 JK |
6547 | * igb_add_rx_frag - Add contents of Rx buffer to sk_buff |
6548 | * @rx_ring: rx descriptor ring to transact packets on | |
6549 | * @rx_buffer: buffer containing page to add | |
6550 | * @rx_desc: descriptor containing length of buffer written by hardware | |
6551 | * @skb: sk_buff to place the data into | |
cbc8e55f | 6552 | * |
b980ac18 JK |
6553 | * This function will add the data contained in rx_buffer->page to the skb. |
6554 | * This is done either through a direct copy if the data in the buffer is | |
6555 | * less than the skb header size, otherwise it will just attach the page as | |
6556 | * a frag to the skb. | |
cbc8e55f | 6557 | * |
b980ac18 JK |
6558 | * The function will then update the page offset if necessary and return |
6559 | * true if the buffer can be reused by the adapter. | |
cbc8e55f AD |
6560 | **/ |
6561 | static bool igb_add_rx_frag(struct igb_ring *rx_ring, | |
6562 | struct igb_rx_buffer *rx_buffer, | |
6563 | union e1000_adv_rx_desc *rx_desc, | |
6564 | struct sk_buff *skb) | |
6565 | { | |
6566 | struct page *page = rx_buffer->page; | |
6567 | unsigned int size = le16_to_cpu(rx_desc->wb.upper.length); | |
74e238ea AD |
6568 | #if (PAGE_SIZE < 8192) |
6569 | unsigned int truesize = IGB_RX_BUFSZ; | |
6570 | #else | |
6571 | unsigned int truesize = ALIGN(size, L1_CACHE_BYTES); | |
6572 | #endif | |
cbc8e55f AD |
6573 | |
6574 | if ((size <= IGB_RX_HDR_LEN) && !skb_is_nonlinear(skb)) { | |
6575 | unsigned char *va = page_address(page) + rx_buffer->page_offset; | |
6576 | ||
cbc8e55f AD |
6577 | if (igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TSIP)) { |
6578 | igb_ptp_rx_pktstamp(rx_ring->q_vector, va, skb); | |
6579 | va += IGB_TS_HDR_LEN; | |
6580 | size -= IGB_TS_HDR_LEN; | |
6581 | } | |
6582 | ||
cbc8e55f AD |
6583 | memcpy(__skb_put(skb, size), va, ALIGN(size, sizeof(long))); |
6584 | ||
6585 | /* we can reuse buffer as-is, just make sure it is local */ | |
6586 | if (likely(page_to_nid(page) == numa_node_id())) | |
6587 | return true; | |
6588 | ||
6589 | /* this page cannot be reused so discard it */ | |
6590 | put_page(page); | |
6591 | return false; | |
6592 | } | |
6593 | ||
6594 | skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, page, | |
74e238ea | 6595 | rx_buffer->page_offset, size, truesize); |
cbc8e55f | 6596 | |
74e238ea AD |
6597 | return igb_can_reuse_rx_page(rx_buffer, page, truesize); |
6598 | } | |
cbc8e55f | 6599 | |
2e334eee AD |
6600 | static struct sk_buff *igb_fetch_rx_buffer(struct igb_ring *rx_ring, |
6601 | union e1000_adv_rx_desc *rx_desc, | |
6602 | struct sk_buff *skb) | |
6603 | { | |
6604 | struct igb_rx_buffer *rx_buffer; | |
6605 | struct page *page; | |
6606 | ||
6607 | rx_buffer = &rx_ring->rx_buffer_info[rx_ring->next_to_clean]; | |
6608 | ||
2e334eee AD |
6609 | page = rx_buffer->page; |
6610 | prefetchw(page); | |
6611 | ||
6612 | if (likely(!skb)) { | |
6613 | void *page_addr = page_address(page) + | |
6614 | rx_buffer->page_offset; | |
6615 | ||
6616 | /* prefetch first cache line of first page */ | |
6617 | prefetch(page_addr); | |
6618 | #if L1_CACHE_BYTES < 128 | |
6619 | prefetch(page_addr + L1_CACHE_BYTES); | |
6620 | #endif | |
6621 | ||
6622 | /* allocate a skb to store the frags */ | |
6623 | skb = netdev_alloc_skb_ip_align(rx_ring->netdev, | |
6624 | IGB_RX_HDR_LEN); | |
6625 | if (unlikely(!skb)) { | |
6626 | rx_ring->rx_stats.alloc_failed++; | |
6627 | return NULL; | |
6628 | } | |
6629 | ||
b980ac18 | 6630 | /* we will be copying header into skb->data in |
2e334eee AD |
6631 | * pskb_may_pull so it is in our interest to prefetch |
6632 | * it now to avoid a possible cache miss | |
6633 | */ | |
6634 | prefetchw(skb->data); | |
6635 | } | |
6636 | ||
6637 | /* we are reusing so sync this buffer for CPU use */ | |
6638 | dma_sync_single_range_for_cpu(rx_ring->dev, | |
6639 | rx_buffer->dma, | |
6640 | rx_buffer->page_offset, | |
de78d1f9 | 6641 | IGB_RX_BUFSZ, |
2e334eee AD |
6642 | DMA_FROM_DEVICE); |
6643 | ||
6644 | /* pull page into skb */ | |
6645 | if (igb_add_rx_frag(rx_ring, rx_buffer, rx_desc, skb)) { | |
6646 | /* hand second half of page back to the ring */ | |
6647 | igb_reuse_rx_page(rx_ring, rx_buffer); | |
6648 | } else { | |
6649 | /* we are not reusing the buffer so unmap it */ | |
6650 | dma_unmap_page(rx_ring->dev, rx_buffer->dma, | |
6651 | PAGE_SIZE, DMA_FROM_DEVICE); | |
6652 | } | |
6653 | ||
6654 | /* clear contents of rx_buffer */ | |
6655 | rx_buffer->page = NULL; | |
6656 | ||
6657 | return skb; | |
6658 | } | |
6659 | ||
cd392f5c | 6660 | static inline void igb_rx_checksum(struct igb_ring *ring, |
3ceb90fd AD |
6661 | union e1000_adv_rx_desc *rx_desc, |
6662 | struct sk_buff *skb) | |
9d5c8243 | 6663 | { |
bc8acf2c | 6664 | skb_checksum_none_assert(skb); |
9d5c8243 | 6665 | |
294e7d78 | 6666 | /* Ignore Checksum bit is set */ |
3ceb90fd | 6667 | if (igb_test_staterr(rx_desc, E1000_RXD_STAT_IXSM)) |
294e7d78 AD |
6668 | return; |
6669 | ||
6670 | /* Rx checksum disabled via ethtool */ | |
6671 | if (!(ring->netdev->features & NETIF_F_RXCSUM)) | |
9d5c8243 | 6672 | return; |
85ad76b2 | 6673 | |
9d5c8243 | 6674 | /* TCP/UDP checksum error bit is set */ |
3ceb90fd AD |
6675 | if (igb_test_staterr(rx_desc, |
6676 | E1000_RXDEXT_STATERR_TCPE | | |
6677 | E1000_RXDEXT_STATERR_IPE)) { | |
b980ac18 | 6678 | /* work around errata with sctp packets where the TCPE aka |
b9473560 JB |
6679 | * L4E bit is set incorrectly on 64 byte (60 byte w/o crc) |
6680 | * packets, (aka let the stack check the crc32c) | |
6681 | */ | |
866cff06 AD |
6682 | if (!((skb->len == 60) && |
6683 | test_bit(IGB_RING_FLAG_RX_SCTP_CSUM, &ring->flags))) { | |
12dcd86b | 6684 | u64_stats_update_begin(&ring->rx_syncp); |
04a5fcaa | 6685 | ring->rx_stats.csum_err++; |
12dcd86b ED |
6686 | u64_stats_update_end(&ring->rx_syncp); |
6687 | } | |
9d5c8243 | 6688 | /* let the stack verify checksum errors */ |
9d5c8243 AK |
6689 | return; |
6690 | } | |
6691 | /* It must be a TCP or UDP packet with a valid checksum */ | |
3ceb90fd AD |
6692 | if (igb_test_staterr(rx_desc, E1000_RXD_STAT_TCPCS | |
6693 | E1000_RXD_STAT_UDPCS)) | |
9d5c8243 AK |
6694 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
6695 | ||
3ceb90fd AD |
6696 | dev_dbg(ring->dev, "cksum success: bits %08X\n", |
6697 | le32_to_cpu(rx_desc->wb.upper.status_error)); | |
9d5c8243 AK |
6698 | } |
6699 | ||
077887c3 AD |
6700 | static inline void igb_rx_hash(struct igb_ring *ring, |
6701 | union e1000_adv_rx_desc *rx_desc, | |
6702 | struct sk_buff *skb) | |
6703 | { | |
6704 | if (ring->netdev->features & NETIF_F_RXHASH) | |
42bdf083 TH |
6705 | skb_set_hash(skb, |
6706 | le32_to_cpu(rx_desc->wb.lower.hi_dword.rss), | |
6707 | PKT_HASH_TYPE_L3); | |
077887c3 AD |
6708 | } |
6709 | ||
2e334eee | 6710 | /** |
b980ac18 JK |
6711 | * igb_is_non_eop - process handling of non-EOP buffers |
6712 | * @rx_ring: Rx ring being processed | |
6713 | * @rx_desc: Rx descriptor for current buffer | |
6714 | * @skb: current socket buffer containing buffer in progress | |
2e334eee | 6715 | * |
b980ac18 JK |
6716 | * This function updates next to clean. If the buffer is an EOP buffer |
6717 | * this function exits returning false, otherwise it will place the | |
6718 | * sk_buff in the next buffer to be chained and return true indicating | |
6719 | * that this is in fact a non-EOP buffer. | |
2e334eee AD |
6720 | **/ |
6721 | static bool igb_is_non_eop(struct igb_ring *rx_ring, | |
6722 | union e1000_adv_rx_desc *rx_desc) | |
6723 | { | |
6724 | u32 ntc = rx_ring->next_to_clean + 1; | |
6725 | ||
6726 | /* fetch, update, and store next to clean */ | |
6727 | ntc = (ntc < rx_ring->count) ? ntc : 0; | |
6728 | rx_ring->next_to_clean = ntc; | |
6729 | ||
6730 | prefetch(IGB_RX_DESC(rx_ring, ntc)); | |
6731 | ||
6732 | if (likely(igb_test_staterr(rx_desc, E1000_RXD_STAT_EOP))) | |
6733 | return false; | |
6734 | ||
6735 | return true; | |
6736 | } | |
6737 | ||
1a1c225b | 6738 | /** |
b980ac18 JK |
6739 | * igb_get_headlen - determine size of header for LRO/GRO |
6740 | * @data: pointer to the start of the headers | |
6741 | * @max_len: total length of section to find headers in | |
1a1c225b | 6742 | * |
b980ac18 JK |
6743 | * This function is meant to determine the length of headers that will |
6744 | * be recognized by hardware for LRO, and GRO offloads. The main | |
6745 | * motivation of doing this is to only perform one pull for IPv4 TCP | |
6746 | * packets so that we can do basic things like calculating the gso_size | |
6747 | * based on the average data per packet. | |
1a1c225b AD |
6748 | **/ |
6749 | static unsigned int igb_get_headlen(unsigned char *data, | |
6750 | unsigned int max_len) | |
6751 | { | |
6752 | union { | |
6753 | unsigned char *network; | |
6754 | /* l2 headers */ | |
6755 | struct ethhdr *eth; | |
6756 | struct vlan_hdr *vlan; | |
6757 | /* l3 headers */ | |
6758 | struct iphdr *ipv4; | |
6759 | struct ipv6hdr *ipv6; | |
6760 | } hdr; | |
6761 | __be16 protocol; | |
6762 | u8 nexthdr = 0; /* default to not TCP */ | |
6763 | u8 hlen; | |
6764 | ||
6765 | /* this should never happen, but better safe than sorry */ | |
6766 | if (max_len < ETH_HLEN) | |
6767 | return max_len; | |
6768 | ||
6769 | /* initialize network frame pointer */ | |
6770 | hdr.network = data; | |
6771 | ||
6772 | /* set first protocol and move network header forward */ | |
6773 | protocol = hdr.eth->h_proto; | |
6774 | hdr.network += ETH_HLEN; | |
6775 | ||
6776 | /* handle any vlan tag if present */ | |
7c4d16ff | 6777 | if (protocol == htons(ETH_P_8021Q)) { |
1a1c225b AD |
6778 | if ((hdr.network - data) > (max_len - VLAN_HLEN)) |
6779 | return max_len; | |
6780 | ||
6781 | protocol = hdr.vlan->h_vlan_encapsulated_proto; | |
6782 | hdr.network += VLAN_HLEN; | |
6783 | } | |
6784 | ||
6785 | /* handle L3 protocols */ | |
7c4d16ff | 6786 | if (protocol == htons(ETH_P_IP)) { |
1a1c225b AD |
6787 | if ((hdr.network - data) > (max_len - sizeof(struct iphdr))) |
6788 | return max_len; | |
6789 | ||
6790 | /* access ihl as a u8 to avoid unaligned access on ia64 */ | |
6791 | hlen = (hdr.network[0] & 0x0F) << 2; | |
6792 | ||
6793 | /* verify hlen meets minimum size requirements */ | |
6794 | if (hlen < sizeof(struct iphdr)) | |
6795 | return hdr.network - data; | |
6796 | ||
f2fb4ab2 | 6797 | /* record next protocol if header is present */ |
b9555f66 | 6798 | if (!(hdr.ipv4->frag_off & htons(IP_OFFSET))) |
f2fb4ab2 | 6799 | nexthdr = hdr.ipv4->protocol; |
7c4d16ff | 6800 | } else if (protocol == htons(ETH_P_IPV6)) { |
1a1c225b AD |
6801 | if ((hdr.network - data) > (max_len - sizeof(struct ipv6hdr))) |
6802 | return max_len; | |
6803 | ||
6804 | /* record next protocol */ | |
6805 | nexthdr = hdr.ipv6->nexthdr; | |
f2fb4ab2 | 6806 | hlen = sizeof(struct ipv6hdr); |
1a1c225b AD |
6807 | } else { |
6808 | return hdr.network - data; | |
6809 | } | |
6810 | ||
f2fb4ab2 AD |
6811 | /* relocate pointer to start of L4 header */ |
6812 | hdr.network += hlen; | |
6813 | ||
1a1c225b AD |
6814 | /* finally sort out TCP */ |
6815 | if (nexthdr == IPPROTO_TCP) { | |
6816 | if ((hdr.network - data) > (max_len - sizeof(struct tcphdr))) | |
6817 | return max_len; | |
6818 | ||
6819 | /* access doff as a u8 to avoid unaligned access on ia64 */ | |
6820 | hlen = (hdr.network[12] & 0xF0) >> 2; | |
6821 | ||
6822 | /* verify hlen meets minimum size requirements */ | |
6823 | if (hlen < sizeof(struct tcphdr)) | |
6824 | return hdr.network - data; | |
6825 | ||
6826 | hdr.network += hlen; | |
6827 | } else if (nexthdr == IPPROTO_UDP) { | |
6828 | if ((hdr.network - data) > (max_len - sizeof(struct udphdr))) | |
6829 | return max_len; | |
6830 | ||
6831 | hdr.network += sizeof(struct udphdr); | |
6832 | } | |
6833 | ||
b980ac18 | 6834 | /* If everything has gone correctly hdr.network should be the |
1a1c225b AD |
6835 | * data section of the packet and will be the end of the header. |
6836 | * If not then it probably represents the end of the last recognized | |
6837 | * header. | |
6838 | */ | |
6839 | if ((hdr.network - data) < max_len) | |
6840 | return hdr.network - data; | |
6841 | else | |
6842 | return max_len; | |
6843 | } | |
6844 | ||
6845 | /** | |
b980ac18 JK |
6846 | * igb_pull_tail - igb specific version of skb_pull_tail |
6847 | * @rx_ring: rx descriptor ring packet is being transacted on | |
6848 | * @rx_desc: pointer to the EOP Rx descriptor | |
6849 | * @skb: pointer to current skb being adjusted | |
1a1c225b | 6850 | * |
b980ac18 JK |
6851 | * This function is an igb specific version of __pskb_pull_tail. The |
6852 | * main difference between this version and the original function is that | |
6853 | * this function can make several assumptions about the state of things | |
6854 | * that allow for significant optimizations versus the standard function. | |
6855 | * As a result we can do things like drop a frag and maintain an accurate | |
6856 | * truesize for the skb. | |
1a1c225b AD |
6857 | */ |
6858 | static void igb_pull_tail(struct igb_ring *rx_ring, | |
6859 | union e1000_adv_rx_desc *rx_desc, | |
6860 | struct sk_buff *skb) | |
2d94d8ab | 6861 | { |
1a1c225b AD |
6862 | struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[0]; |
6863 | unsigned char *va; | |
6864 | unsigned int pull_len; | |
6865 | ||
b980ac18 | 6866 | /* it is valid to use page_address instead of kmap since we are |
1a1c225b AD |
6867 | * working with pages allocated out of the lomem pool per |
6868 | * alloc_page(GFP_ATOMIC) | |
2d94d8ab | 6869 | */ |
1a1c225b AD |
6870 | va = skb_frag_address(frag); |
6871 | ||
1a1c225b AD |
6872 | if (igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TSIP)) { |
6873 | /* retrieve timestamp from buffer */ | |
6874 | igb_ptp_rx_pktstamp(rx_ring->q_vector, va, skb); | |
6875 | ||
6876 | /* update pointers to remove timestamp header */ | |
6877 | skb_frag_size_sub(frag, IGB_TS_HDR_LEN); | |
6878 | frag->page_offset += IGB_TS_HDR_LEN; | |
6879 | skb->data_len -= IGB_TS_HDR_LEN; | |
6880 | skb->len -= IGB_TS_HDR_LEN; | |
6881 | ||
6882 | /* move va to start of packet data */ | |
6883 | va += IGB_TS_HDR_LEN; | |
6884 | } | |
6885 | ||
b980ac18 | 6886 | /* we need the header to contain the greater of either ETH_HLEN or |
1a1c225b AD |
6887 | * 60 bytes if the skb->len is less than 60 for skb_pad. |
6888 | */ | |
6889 | pull_len = igb_get_headlen(va, IGB_RX_HDR_LEN); | |
6890 | ||
6891 | /* align pull length to size of long to optimize memcpy performance */ | |
6892 | skb_copy_to_linear_data(skb, va, ALIGN(pull_len, sizeof(long))); | |
6893 | ||
6894 | /* update all of the pointers */ | |
6895 | skb_frag_size_sub(frag, pull_len); | |
6896 | frag->page_offset += pull_len; | |
6897 | skb->data_len -= pull_len; | |
6898 | skb->tail += pull_len; | |
6899 | } | |
6900 | ||
6901 | /** | |
b980ac18 JK |
6902 | * igb_cleanup_headers - Correct corrupted or empty headers |
6903 | * @rx_ring: rx descriptor ring packet is being transacted on | |
6904 | * @rx_desc: pointer to the EOP Rx descriptor | |
6905 | * @skb: pointer to current skb being fixed | |
1a1c225b | 6906 | * |
b980ac18 JK |
6907 | * Address the case where we are pulling data in on pages only |
6908 | * and as such no data is present in the skb header. | |
1a1c225b | 6909 | * |
b980ac18 JK |
6910 | * In addition if skb is not at least 60 bytes we need to pad it so that |
6911 | * it is large enough to qualify as a valid Ethernet frame. | |
1a1c225b | 6912 | * |
b980ac18 | 6913 | * Returns true if an error was encountered and skb was freed. |
1a1c225b AD |
6914 | **/ |
6915 | static bool igb_cleanup_headers(struct igb_ring *rx_ring, | |
6916 | union e1000_adv_rx_desc *rx_desc, | |
6917 | struct sk_buff *skb) | |
6918 | { | |
1a1c225b AD |
6919 | if (unlikely((igb_test_staterr(rx_desc, |
6920 | E1000_RXDEXT_ERR_FRAME_ERR_MASK)))) { | |
6921 | struct net_device *netdev = rx_ring->netdev; | |
6922 | if (!(netdev->features & NETIF_F_RXALL)) { | |
6923 | dev_kfree_skb_any(skb); | |
6924 | return true; | |
6925 | } | |
6926 | } | |
6927 | ||
6928 | /* place header in linear portion of buffer */ | |
6929 | if (skb_is_nonlinear(skb)) | |
6930 | igb_pull_tail(rx_ring, rx_desc, skb); | |
6931 | ||
6932 | /* if skb_pad returns an error the skb was freed */ | |
6933 | if (unlikely(skb->len < 60)) { | |
6934 | int pad_len = 60 - skb->len; | |
6935 | ||
6936 | if (skb_pad(skb, pad_len)) | |
6937 | return true; | |
6938 | __skb_put(skb, pad_len); | |
6939 | } | |
6940 | ||
6941 | return false; | |
2d94d8ab AD |
6942 | } |
6943 | ||
db2ee5bd | 6944 | /** |
b980ac18 JK |
6945 | * igb_process_skb_fields - Populate skb header fields from Rx descriptor |
6946 | * @rx_ring: rx descriptor ring packet is being transacted on | |
6947 | * @rx_desc: pointer to the EOP Rx descriptor | |
6948 | * @skb: pointer to current skb being populated | |
db2ee5bd | 6949 | * |
b980ac18 JK |
6950 | * This function checks the ring, descriptor, and packet information in |
6951 | * order to populate the hash, checksum, VLAN, timestamp, protocol, and | |
6952 | * other fields within the skb. | |
db2ee5bd AD |
6953 | **/ |
6954 | static void igb_process_skb_fields(struct igb_ring *rx_ring, | |
6955 | union e1000_adv_rx_desc *rx_desc, | |
6956 | struct sk_buff *skb) | |
6957 | { | |
6958 | struct net_device *dev = rx_ring->netdev; | |
6959 | ||
6960 | igb_rx_hash(rx_ring, rx_desc, skb); | |
6961 | ||
6962 | igb_rx_checksum(rx_ring, rx_desc, skb); | |
6963 | ||
5499a968 JK |
6964 | if (igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TS) && |
6965 | !igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TSIP)) | |
6966 | igb_ptp_rx_rgtstamp(rx_ring->q_vector, skb); | |
db2ee5bd | 6967 | |
f646968f | 6968 | if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) && |
db2ee5bd AD |
6969 | igb_test_staterr(rx_desc, E1000_RXD_STAT_VP)) { |
6970 | u16 vid; | |
9005df38 | 6971 | |
db2ee5bd AD |
6972 | if (igb_test_staterr(rx_desc, E1000_RXDEXT_STATERR_LB) && |
6973 | test_bit(IGB_RING_FLAG_RX_LB_VLAN_BSWAP, &rx_ring->flags)) | |
6974 | vid = be16_to_cpu(rx_desc->wb.upper.vlan); | |
6975 | else | |
6976 | vid = le16_to_cpu(rx_desc->wb.upper.vlan); | |
6977 | ||
86a9bad3 | 6978 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); |
db2ee5bd AD |
6979 | } |
6980 | ||
6981 | skb_record_rx_queue(skb, rx_ring->queue_index); | |
6982 | ||
6983 | skb->protocol = eth_type_trans(skb, rx_ring->netdev); | |
6984 | } | |
6985 | ||
2e334eee | 6986 | static bool igb_clean_rx_irq(struct igb_q_vector *q_vector, const int budget) |
9d5c8243 | 6987 | { |
0ba82994 | 6988 | struct igb_ring *rx_ring = q_vector->rx.ring; |
1a1c225b | 6989 | struct sk_buff *skb = rx_ring->skb; |
9d5c8243 | 6990 | unsigned int total_bytes = 0, total_packets = 0; |
16eb8815 | 6991 | u16 cleaned_count = igb_desc_unused(rx_ring); |
9d5c8243 | 6992 | |
57ba34c9 | 6993 | while (likely(total_packets < budget)) { |
2e334eee | 6994 | union e1000_adv_rx_desc *rx_desc; |
bf36c1a0 | 6995 | |
2e334eee AD |
6996 | /* return some buffers to hardware, one at a time is too slow */ |
6997 | if (cleaned_count >= IGB_RX_BUFFER_WRITE) { | |
6998 | igb_alloc_rx_buffers(rx_ring, cleaned_count); | |
6999 | cleaned_count = 0; | |
7000 | } | |
bf36c1a0 | 7001 | |
2e334eee | 7002 | rx_desc = IGB_RX_DESC(rx_ring, rx_ring->next_to_clean); |
16eb8815 | 7003 | |
2e334eee AD |
7004 | if (!igb_test_staterr(rx_desc, E1000_RXD_STAT_DD)) |
7005 | break; | |
9d5c8243 | 7006 | |
74e238ea AD |
7007 | /* This memory barrier is needed to keep us from reading |
7008 | * any other fields out of the rx_desc until we know the | |
7009 | * RXD_STAT_DD bit is set | |
7010 | */ | |
7011 | rmb(); | |
7012 | ||
2e334eee | 7013 | /* retrieve a buffer from the ring */ |
f9d40f6a | 7014 | skb = igb_fetch_rx_buffer(rx_ring, rx_desc, skb); |
9d5c8243 | 7015 | |
2e334eee AD |
7016 | /* exit if we failed to retrieve a buffer */ |
7017 | if (!skb) | |
7018 | break; | |
1a1c225b | 7019 | |
2e334eee | 7020 | cleaned_count++; |
1a1c225b | 7021 | |
2e334eee AD |
7022 | /* fetch next buffer in frame if non-eop */ |
7023 | if (igb_is_non_eop(rx_ring, rx_desc)) | |
7024 | continue; | |
1a1c225b AD |
7025 | |
7026 | /* verify the packet layout is correct */ | |
7027 | if (igb_cleanup_headers(rx_ring, rx_desc, skb)) { | |
7028 | skb = NULL; | |
7029 | continue; | |
9d5c8243 | 7030 | } |
9d5c8243 | 7031 | |
db2ee5bd | 7032 | /* probably a little skewed due to removing CRC */ |
3ceb90fd | 7033 | total_bytes += skb->len; |
3ceb90fd | 7034 | |
db2ee5bd AD |
7035 | /* populate checksum, timestamp, VLAN, and protocol */ |
7036 | igb_process_skb_fields(rx_ring, rx_desc, skb); | |
3ceb90fd | 7037 | |
b2cb09b1 | 7038 | napi_gro_receive(&q_vector->napi, skb); |
9d5c8243 | 7039 | |
1a1c225b AD |
7040 | /* reset skb pointer */ |
7041 | skb = NULL; | |
7042 | ||
2e334eee AD |
7043 | /* update budget accounting */ |
7044 | total_packets++; | |
57ba34c9 | 7045 | } |
bf36c1a0 | 7046 | |
1a1c225b AD |
7047 | /* place incomplete frames back on ring for completion */ |
7048 | rx_ring->skb = skb; | |
7049 | ||
12dcd86b | 7050 | u64_stats_update_begin(&rx_ring->rx_syncp); |
9d5c8243 AK |
7051 | rx_ring->rx_stats.packets += total_packets; |
7052 | rx_ring->rx_stats.bytes += total_bytes; | |
12dcd86b | 7053 | u64_stats_update_end(&rx_ring->rx_syncp); |
0ba82994 AD |
7054 | q_vector->rx.total_packets += total_packets; |
7055 | q_vector->rx.total_bytes += total_bytes; | |
c023cd88 AD |
7056 | |
7057 | if (cleaned_count) | |
cd392f5c | 7058 | igb_alloc_rx_buffers(rx_ring, cleaned_count); |
c023cd88 | 7059 | |
da1f1dfe | 7060 | return total_packets < budget; |
9d5c8243 AK |
7061 | } |
7062 | ||
c023cd88 | 7063 | static bool igb_alloc_mapped_page(struct igb_ring *rx_ring, |
06034649 | 7064 | struct igb_rx_buffer *bi) |
c023cd88 AD |
7065 | { |
7066 | struct page *page = bi->page; | |
cbc8e55f | 7067 | dma_addr_t dma; |
c023cd88 | 7068 | |
cbc8e55f AD |
7069 | /* since we are recycling buffers we should seldom need to alloc */ |
7070 | if (likely(page)) | |
c023cd88 AD |
7071 | return true; |
7072 | ||
cbc8e55f AD |
7073 | /* alloc new page for storage */ |
7074 | page = __skb_alloc_page(GFP_ATOMIC | __GFP_COLD, NULL); | |
7075 | if (unlikely(!page)) { | |
7076 | rx_ring->rx_stats.alloc_failed++; | |
7077 | return false; | |
c023cd88 AD |
7078 | } |
7079 | ||
cbc8e55f AD |
7080 | /* map page for use */ |
7081 | dma = dma_map_page(rx_ring->dev, page, 0, PAGE_SIZE, DMA_FROM_DEVICE); | |
c023cd88 | 7082 | |
b980ac18 | 7083 | /* if mapping failed free memory back to system since |
cbc8e55f AD |
7084 | * there isn't much point in holding memory we can't use |
7085 | */ | |
1a1c225b | 7086 | if (dma_mapping_error(rx_ring->dev, dma)) { |
cbc8e55f AD |
7087 | __free_page(page); |
7088 | ||
c023cd88 AD |
7089 | rx_ring->rx_stats.alloc_failed++; |
7090 | return false; | |
7091 | } | |
7092 | ||
1a1c225b | 7093 | bi->dma = dma; |
cbc8e55f AD |
7094 | bi->page = page; |
7095 | bi->page_offset = 0; | |
1a1c225b | 7096 | |
c023cd88 AD |
7097 | return true; |
7098 | } | |
7099 | ||
9d5c8243 | 7100 | /** |
b980ac18 JK |
7101 | * igb_alloc_rx_buffers - Replace used receive buffers; packet split |
7102 | * @adapter: address of board private structure | |
9d5c8243 | 7103 | **/ |
cd392f5c | 7104 | void igb_alloc_rx_buffers(struct igb_ring *rx_ring, u16 cleaned_count) |
9d5c8243 | 7105 | { |
9d5c8243 | 7106 | union e1000_adv_rx_desc *rx_desc; |
06034649 | 7107 | struct igb_rx_buffer *bi; |
c023cd88 | 7108 | u16 i = rx_ring->next_to_use; |
9d5c8243 | 7109 | |
cbc8e55f AD |
7110 | /* nothing to do */ |
7111 | if (!cleaned_count) | |
7112 | return; | |
7113 | ||
60136906 | 7114 | rx_desc = IGB_RX_DESC(rx_ring, i); |
06034649 | 7115 | bi = &rx_ring->rx_buffer_info[i]; |
c023cd88 | 7116 | i -= rx_ring->count; |
9d5c8243 | 7117 | |
cbc8e55f | 7118 | do { |
1a1c225b | 7119 | if (!igb_alloc_mapped_page(rx_ring, bi)) |
c023cd88 | 7120 | break; |
9d5c8243 | 7121 | |
b980ac18 | 7122 | /* Refresh the desc even if buffer_addrs didn't change |
cbc8e55f AD |
7123 | * because each write-back erases this info. |
7124 | */ | |
f9d40f6a | 7125 | rx_desc->read.pkt_addr = cpu_to_le64(bi->dma + bi->page_offset); |
9d5c8243 | 7126 | |
c023cd88 AD |
7127 | rx_desc++; |
7128 | bi++; | |
9d5c8243 | 7129 | i++; |
c023cd88 | 7130 | if (unlikely(!i)) { |
60136906 | 7131 | rx_desc = IGB_RX_DESC(rx_ring, 0); |
06034649 | 7132 | bi = rx_ring->rx_buffer_info; |
c023cd88 AD |
7133 | i -= rx_ring->count; |
7134 | } | |
7135 | ||
7136 | /* clear the hdr_addr for the next_to_use descriptor */ | |
7137 | rx_desc->read.hdr_addr = 0; | |
cbc8e55f AD |
7138 | |
7139 | cleaned_count--; | |
7140 | } while (cleaned_count); | |
9d5c8243 | 7141 | |
c023cd88 AD |
7142 | i += rx_ring->count; |
7143 | ||
9d5c8243 | 7144 | if (rx_ring->next_to_use != i) { |
cbc8e55f | 7145 | /* record the next descriptor to use */ |
9d5c8243 | 7146 | rx_ring->next_to_use = i; |
9d5c8243 | 7147 | |
cbc8e55f AD |
7148 | /* update next to alloc since we have filled the ring */ |
7149 | rx_ring->next_to_alloc = i; | |
7150 | ||
b980ac18 | 7151 | /* Force memory writes to complete before letting h/w |
9d5c8243 AK |
7152 | * know there are new descriptors to fetch. (Only |
7153 | * applicable for weak-ordered memory model archs, | |
cbc8e55f AD |
7154 | * such as IA-64). |
7155 | */ | |
9d5c8243 | 7156 | wmb(); |
fce99e34 | 7157 | writel(i, rx_ring->tail); |
9d5c8243 AK |
7158 | } |
7159 | } | |
7160 | ||
7161 | /** | |
7162 | * igb_mii_ioctl - | |
7163 | * @netdev: | |
7164 | * @ifreq: | |
7165 | * @cmd: | |
7166 | **/ | |
7167 | static int igb_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
7168 | { | |
7169 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7170 | struct mii_ioctl_data *data = if_mii(ifr); | |
7171 | ||
7172 | if (adapter->hw.phy.media_type != e1000_media_type_copper) | |
7173 | return -EOPNOTSUPP; | |
7174 | ||
7175 | switch (cmd) { | |
7176 | case SIOCGMIIPHY: | |
7177 | data->phy_id = adapter->hw.phy.addr; | |
7178 | break; | |
7179 | case SIOCGMIIREG: | |
f5f4cf08 | 7180 | if (igb_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
9005df38 | 7181 | &data->val_out)) |
9d5c8243 AK |
7182 | return -EIO; |
7183 | break; | |
7184 | case SIOCSMIIREG: | |
7185 | default: | |
7186 | return -EOPNOTSUPP; | |
7187 | } | |
7188 | return 0; | |
7189 | } | |
7190 | ||
7191 | /** | |
7192 | * igb_ioctl - | |
7193 | * @netdev: | |
7194 | * @ifreq: | |
7195 | * @cmd: | |
7196 | **/ | |
7197 | static int igb_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
7198 | { | |
7199 | switch (cmd) { | |
7200 | case SIOCGMIIPHY: | |
7201 | case SIOCGMIIREG: | |
7202 | case SIOCSMIIREG: | |
7203 | return igb_mii_ioctl(netdev, ifr, cmd); | |
6ab5f7b2 JK |
7204 | case SIOCGHWTSTAMP: |
7205 | return igb_ptp_get_ts_config(netdev, ifr); | |
c6cb090b | 7206 | case SIOCSHWTSTAMP: |
6ab5f7b2 | 7207 | return igb_ptp_set_ts_config(netdev, ifr); |
9d5c8243 AK |
7208 | default: |
7209 | return -EOPNOTSUPP; | |
7210 | } | |
7211 | } | |
7212 | ||
009bc06e AD |
7213 | s32 igb_read_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value) |
7214 | { | |
7215 | struct igb_adapter *adapter = hw->back; | |
009bc06e | 7216 | |
23d028cc | 7217 | if (pcie_capability_read_word(adapter->pdev, reg, value)) |
009bc06e AD |
7218 | return -E1000_ERR_CONFIG; |
7219 | ||
009bc06e AD |
7220 | return 0; |
7221 | } | |
7222 | ||
7223 | s32 igb_write_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value) | |
7224 | { | |
7225 | struct igb_adapter *adapter = hw->back; | |
009bc06e | 7226 | |
23d028cc | 7227 | if (pcie_capability_write_word(adapter->pdev, reg, *value)) |
009bc06e AD |
7228 | return -E1000_ERR_CONFIG; |
7229 | ||
009bc06e AD |
7230 | return 0; |
7231 | } | |
7232 | ||
c8f44aff | 7233 | static void igb_vlan_mode(struct net_device *netdev, netdev_features_t features) |
9d5c8243 AK |
7234 | { |
7235 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7236 | struct e1000_hw *hw = &adapter->hw; | |
7237 | u32 ctrl, rctl; | |
f646968f | 7238 | bool enable = !!(features & NETIF_F_HW_VLAN_CTAG_RX); |
9d5c8243 | 7239 | |
5faf030c | 7240 | if (enable) { |
9d5c8243 AK |
7241 | /* enable VLAN tag insert/strip */ |
7242 | ctrl = rd32(E1000_CTRL); | |
7243 | ctrl |= E1000_CTRL_VME; | |
7244 | wr32(E1000_CTRL, ctrl); | |
7245 | ||
51466239 | 7246 | /* Disable CFI check */ |
9d5c8243 | 7247 | rctl = rd32(E1000_RCTL); |
9d5c8243 AK |
7248 | rctl &= ~E1000_RCTL_CFIEN; |
7249 | wr32(E1000_RCTL, rctl); | |
9d5c8243 AK |
7250 | } else { |
7251 | /* disable VLAN tag insert/strip */ | |
7252 | ctrl = rd32(E1000_CTRL); | |
7253 | ctrl &= ~E1000_CTRL_VME; | |
7254 | wr32(E1000_CTRL, ctrl); | |
9d5c8243 AK |
7255 | } |
7256 | ||
e1739522 | 7257 | igb_rlpml_set(adapter); |
9d5c8243 AK |
7258 | } |
7259 | ||
80d5c368 PM |
7260 | static int igb_vlan_rx_add_vid(struct net_device *netdev, |
7261 | __be16 proto, u16 vid) | |
9d5c8243 AK |
7262 | { |
7263 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7264 | struct e1000_hw *hw = &adapter->hw; | |
4ae196df | 7265 | int pf_id = adapter->vfs_allocated_count; |
9d5c8243 | 7266 | |
51466239 AD |
7267 | /* attempt to add filter to vlvf array */ |
7268 | igb_vlvf_set(adapter, vid, true, pf_id); | |
4ae196df | 7269 | |
51466239 AD |
7270 | /* add the filter since PF can receive vlans w/o entry in vlvf */ |
7271 | igb_vfta_set(hw, vid, true); | |
b2cb09b1 JP |
7272 | |
7273 | set_bit(vid, adapter->active_vlans); | |
8e586137 JP |
7274 | |
7275 | return 0; | |
9d5c8243 AK |
7276 | } |
7277 | ||
80d5c368 PM |
7278 | static int igb_vlan_rx_kill_vid(struct net_device *netdev, |
7279 | __be16 proto, u16 vid) | |
9d5c8243 AK |
7280 | { |
7281 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7282 | struct e1000_hw *hw = &adapter->hw; | |
4ae196df | 7283 | int pf_id = adapter->vfs_allocated_count; |
51466239 | 7284 | s32 err; |
9d5c8243 | 7285 | |
51466239 AD |
7286 | /* remove vlan from VLVF table array */ |
7287 | err = igb_vlvf_set(adapter, vid, false, pf_id); | |
9d5c8243 | 7288 | |
51466239 AD |
7289 | /* if vid was not present in VLVF just remove it from table */ |
7290 | if (err) | |
4ae196df | 7291 | igb_vfta_set(hw, vid, false); |
b2cb09b1 JP |
7292 | |
7293 | clear_bit(vid, adapter->active_vlans); | |
8e586137 JP |
7294 | |
7295 | return 0; | |
9d5c8243 AK |
7296 | } |
7297 | ||
7298 | static void igb_restore_vlan(struct igb_adapter *adapter) | |
7299 | { | |
b2cb09b1 | 7300 | u16 vid; |
9d5c8243 | 7301 | |
5faf030c AD |
7302 | igb_vlan_mode(adapter->netdev, adapter->netdev->features); |
7303 | ||
b2cb09b1 | 7304 | for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) |
80d5c368 | 7305 | igb_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid); |
9d5c8243 AK |
7306 | } |
7307 | ||
14ad2513 | 7308 | int igb_set_spd_dplx(struct igb_adapter *adapter, u32 spd, u8 dplx) |
9d5c8243 | 7309 | { |
090b1795 | 7310 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
7311 | struct e1000_mac_info *mac = &adapter->hw.mac; |
7312 | ||
7313 | mac->autoneg = 0; | |
7314 | ||
14ad2513 | 7315 | /* Make sure dplx is at most 1 bit and lsb of speed is not set |
b980ac18 JK |
7316 | * for the switch() below to work |
7317 | */ | |
14ad2513 DD |
7318 | if ((spd & 1) || (dplx & ~1)) |
7319 | goto err_inval; | |
7320 | ||
f502ef7d AA |
7321 | /* Fiber NIC's only allow 1000 gbps Full duplex |
7322 | * and 100Mbps Full duplex for 100baseFx sfp | |
7323 | */ | |
7324 | if (adapter->hw.phy.media_type == e1000_media_type_internal_serdes) { | |
7325 | switch (spd + dplx) { | |
7326 | case SPEED_10 + DUPLEX_HALF: | |
7327 | case SPEED_10 + DUPLEX_FULL: | |
7328 | case SPEED_100 + DUPLEX_HALF: | |
7329 | goto err_inval; | |
7330 | default: | |
7331 | break; | |
7332 | } | |
7333 | } | |
cd2638a8 | 7334 | |
14ad2513 | 7335 | switch (spd + dplx) { |
9d5c8243 AK |
7336 | case SPEED_10 + DUPLEX_HALF: |
7337 | mac->forced_speed_duplex = ADVERTISE_10_HALF; | |
7338 | break; | |
7339 | case SPEED_10 + DUPLEX_FULL: | |
7340 | mac->forced_speed_duplex = ADVERTISE_10_FULL; | |
7341 | break; | |
7342 | case SPEED_100 + DUPLEX_HALF: | |
7343 | mac->forced_speed_duplex = ADVERTISE_100_HALF; | |
7344 | break; | |
7345 | case SPEED_100 + DUPLEX_FULL: | |
7346 | mac->forced_speed_duplex = ADVERTISE_100_FULL; | |
7347 | break; | |
7348 | case SPEED_1000 + DUPLEX_FULL: | |
7349 | mac->autoneg = 1; | |
7350 | adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL; | |
7351 | break; | |
7352 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ | |
7353 | default: | |
14ad2513 | 7354 | goto err_inval; |
9d5c8243 | 7355 | } |
8376dad0 JB |
7356 | |
7357 | /* clear MDI, MDI(-X) override is only allowed when autoneg enabled */ | |
7358 | adapter->hw.phy.mdix = AUTO_ALL_MODES; | |
7359 | ||
9d5c8243 | 7360 | return 0; |
14ad2513 DD |
7361 | |
7362 | err_inval: | |
7363 | dev_err(&pdev->dev, "Unsupported Speed/Duplex configuration\n"); | |
7364 | return -EINVAL; | |
9d5c8243 AK |
7365 | } |
7366 | ||
749ab2cd YZ |
7367 | static int __igb_shutdown(struct pci_dev *pdev, bool *enable_wake, |
7368 | bool runtime) | |
9d5c8243 AK |
7369 | { |
7370 | struct net_device *netdev = pci_get_drvdata(pdev); | |
7371 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7372 | struct e1000_hw *hw = &adapter->hw; | |
2d064c06 | 7373 | u32 ctrl, rctl, status; |
749ab2cd | 7374 | u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol; |
9d5c8243 AK |
7375 | #ifdef CONFIG_PM |
7376 | int retval = 0; | |
7377 | #endif | |
7378 | ||
7379 | netif_device_detach(netdev); | |
7380 | ||
a88f10ec | 7381 | if (netif_running(netdev)) |
749ab2cd | 7382 | __igb_close(netdev, true); |
a88f10ec | 7383 | |
047e0030 | 7384 | igb_clear_interrupt_scheme(adapter); |
9d5c8243 AK |
7385 | |
7386 | #ifdef CONFIG_PM | |
7387 | retval = pci_save_state(pdev); | |
7388 | if (retval) | |
7389 | return retval; | |
7390 | #endif | |
7391 | ||
7392 | status = rd32(E1000_STATUS); | |
7393 | if (status & E1000_STATUS_LU) | |
7394 | wufc &= ~E1000_WUFC_LNKC; | |
7395 | ||
7396 | if (wufc) { | |
7397 | igb_setup_rctl(adapter); | |
ff41f8dc | 7398 | igb_set_rx_mode(netdev); |
9d5c8243 AK |
7399 | |
7400 | /* turn on all-multi mode if wake on multicast is enabled */ | |
7401 | if (wufc & E1000_WUFC_MC) { | |
7402 | rctl = rd32(E1000_RCTL); | |
7403 | rctl |= E1000_RCTL_MPE; | |
7404 | wr32(E1000_RCTL, rctl); | |
7405 | } | |
7406 | ||
7407 | ctrl = rd32(E1000_CTRL); | |
7408 | /* advertise wake from D3Cold */ | |
7409 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
7410 | /* phy power management enable */ | |
7411 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
7412 | ctrl |= E1000_CTRL_ADVD3WUC; | |
7413 | wr32(E1000_CTRL, ctrl); | |
7414 | ||
9d5c8243 | 7415 | /* Allow time for pending master requests to run */ |
330a6d6a | 7416 | igb_disable_pcie_master(hw); |
9d5c8243 AK |
7417 | |
7418 | wr32(E1000_WUC, E1000_WUC_PME_EN); | |
7419 | wr32(E1000_WUFC, wufc); | |
9d5c8243 AK |
7420 | } else { |
7421 | wr32(E1000_WUC, 0); | |
7422 | wr32(E1000_WUFC, 0); | |
9d5c8243 AK |
7423 | } |
7424 | ||
3fe7c4c9 RW |
7425 | *enable_wake = wufc || adapter->en_mng_pt; |
7426 | if (!*enable_wake) | |
88a268c1 NN |
7427 | igb_power_down_link(adapter); |
7428 | else | |
7429 | igb_power_up_link(adapter); | |
9d5c8243 AK |
7430 | |
7431 | /* Release control of h/w to f/w. If f/w is AMT enabled, this | |
b980ac18 JK |
7432 | * would have already happened in close and is redundant. |
7433 | */ | |
9d5c8243 AK |
7434 | igb_release_hw_control(adapter); |
7435 | ||
7436 | pci_disable_device(pdev); | |
7437 | ||
9d5c8243 AK |
7438 | return 0; |
7439 | } | |
7440 | ||
7441 | #ifdef CONFIG_PM | |
d9dd966d | 7442 | #ifdef CONFIG_PM_SLEEP |
749ab2cd | 7443 | static int igb_suspend(struct device *dev) |
3fe7c4c9 RW |
7444 | { |
7445 | int retval; | |
7446 | bool wake; | |
749ab2cd | 7447 | struct pci_dev *pdev = to_pci_dev(dev); |
3fe7c4c9 | 7448 | |
749ab2cd | 7449 | retval = __igb_shutdown(pdev, &wake, 0); |
3fe7c4c9 RW |
7450 | if (retval) |
7451 | return retval; | |
7452 | ||
7453 | if (wake) { | |
7454 | pci_prepare_to_sleep(pdev); | |
7455 | } else { | |
7456 | pci_wake_from_d3(pdev, false); | |
7457 | pci_set_power_state(pdev, PCI_D3hot); | |
7458 | } | |
7459 | ||
7460 | return 0; | |
7461 | } | |
d9dd966d | 7462 | #endif /* CONFIG_PM_SLEEP */ |
3fe7c4c9 | 7463 | |
749ab2cd | 7464 | static int igb_resume(struct device *dev) |
9d5c8243 | 7465 | { |
749ab2cd | 7466 | struct pci_dev *pdev = to_pci_dev(dev); |
9d5c8243 AK |
7467 | struct net_device *netdev = pci_get_drvdata(pdev); |
7468 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7469 | struct e1000_hw *hw = &adapter->hw; | |
7470 | u32 err; | |
7471 | ||
7472 | pci_set_power_state(pdev, PCI_D0); | |
7473 | pci_restore_state(pdev); | |
b94f2d77 | 7474 | pci_save_state(pdev); |
42bfd33a | 7475 | |
aed5dec3 | 7476 | err = pci_enable_device_mem(pdev); |
9d5c8243 AK |
7477 | if (err) { |
7478 | dev_err(&pdev->dev, | |
7479 | "igb: Cannot enable PCI device from suspend\n"); | |
7480 | return err; | |
7481 | } | |
7482 | pci_set_master(pdev); | |
7483 | ||
7484 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
7485 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
7486 | ||
53c7d064 | 7487 | if (igb_init_interrupt_scheme(adapter, true)) { |
a88f10ec AD |
7488 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); |
7489 | return -ENOMEM; | |
9d5c8243 AK |
7490 | } |
7491 | ||
9d5c8243 | 7492 | igb_reset(adapter); |
a8564f03 AD |
7493 | |
7494 | /* let the f/w know that the h/w is now under the control of the | |
b980ac18 JK |
7495 | * driver. |
7496 | */ | |
a8564f03 AD |
7497 | igb_get_hw_control(adapter); |
7498 | ||
9d5c8243 AK |
7499 | wr32(E1000_WUS, ~0); |
7500 | ||
749ab2cd | 7501 | if (netdev->flags & IFF_UP) { |
0c2cc02e | 7502 | rtnl_lock(); |
749ab2cd | 7503 | err = __igb_open(netdev, true); |
0c2cc02e | 7504 | rtnl_unlock(); |
a88f10ec AD |
7505 | if (err) |
7506 | return err; | |
7507 | } | |
9d5c8243 AK |
7508 | |
7509 | netif_device_attach(netdev); | |
749ab2cd YZ |
7510 | return 0; |
7511 | } | |
7512 | ||
7513 | #ifdef CONFIG_PM_RUNTIME | |
7514 | static int igb_runtime_idle(struct device *dev) | |
7515 | { | |
7516 | struct pci_dev *pdev = to_pci_dev(dev); | |
7517 | struct net_device *netdev = pci_get_drvdata(pdev); | |
7518 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7519 | ||
7520 | if (!igb_has_link(adapter)) | |
7521 | pm_schedule_suspend(dev, MSEC_PER_SEC * 5); | |
7522 | ||
7523 | return -EBUSY; | |
7524 | } | |
7525 | ||
7526 | static int igb_runtime_suspend(struct device *dev) | |
7527 | { | |
7528 | struct pci_dev *pdev = to_pci_dev(dev); | |
7529 | int retval; | |
7530 | bool wake; | |
7531 | ||
7532 | retval = __igb_shutdown(pdev, &wake, 1); | |
7533 | if (retval) | |
7534 | return retval; | |
7535 | ||
7536 | if (wake) { | |
7537 | pci_prepare_to_sleep(pdev); | |
7538 | } else { | |
7539 | pci_wake_from_d3(pdev, false); | |
7540 | pci_set_power_state(pdev, PCI_D3hot); | |
7541 | } | |
9d5c8243 | 7542 | |
9d5c8243 AK |
7543 | return 0; |
7544 | } | |
749ab2cd YZ |
7545 | |
7546 | static int igb_runtime_resume(struct device *dev) | |
7547 | { | |
7548 | return igb_resume(dev); | |
7549 | } | |
7550 | #endif /* CONFIG_PM_RUNTIME */ | |
9d5c8243 AK |
7551 | #endif |
7552 | ||
7553 | static void igb_shutdown(struct pci_dev *pdev) | |
7554 | { | |
3fe7c4c9 RW |
7555 | bool wake; |
7556 | ||
749ab2cd | 7557 | __igb_shutdown(pdev, &wake, 0); |
3fe7c4c9 RW |
7558 | |
7559 | if (system_state == SYSTEM_POWER_OFF) { | |
7560 | pci_wake_from_d3(pdev, wake); | |
7561 | pci_set_power_state(pdev, PCI_D3hot); | |
7562 | } | |
9d5c8243 AK |
7563 | } |
7564 | ||
fa44f2f1 GR |
7565 | #ifdef CONFIG_PCI_IOV |
7566 | static int igb_sriov_reinit(struct pci_dev *dev) | |
7567 | { | |
7568 | struct net_device *netdev = pci_get_drvdata(dev); | |
7569 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7570 | struct pci_dev *pdev = adapter->pdev; | |
7571 | ||
7572 | rtnl_lock(); | |
7573 | ||
7574 | if (netif_running(netdev)) | |
7575 | igb_close(netdev); | |
7576 | ||
7577 | igb_clear_interrupt_scheme(adapter); | |
7578 | ||
7579 | igb_init_queue_configuration(adapter); | |
7580 | ||
7581 | if (igb_init_interrupt_scheme(adapter, true)) { | |
7582 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); | |
7583 | return -ENOMEM; | |
7584 | } | |
7585 | ||
7586 | if (netif_running(netdev)) | |
7587 | igb_open(netdev); | |
7588 | ||
7589 | rtnl_unlock(); | |
7590 | ||
7591 | return 0; | |
7592 | } | |
7593 | ||
7594 | static int igb_pci_disable_sriov(struct pci_dev *dev) | |
7595 | { | |
7596 | int err = igb_disable_sriov(dev); | |
7597 | ||
7598 | if (!err) | |
7599 | err = igb_sriov_reinit(dev); | |
7600 | ||
7601 | return err; | |
7602 | } | |
7603 | ||
7604 | static int igb_pci_enable_sriov(struct pci_dev *dev, int num_vfs) | |
7605 | { | |
7606 | int err = igb_enable_sriov(dev, num_vfs); | |
7607 | ||
7608 | if (err) | |
7609 | goto out; | |
7610 | ||
7611 | err = igb_sriov_reinit(dev); | |
7612 | if (!err) | |
7613 | return num_vfs; | |
7614 | ||
7615 | out: | |
7616 | return err; | |
7617 | } | |
7618 | ||
7619 | #endif | |
7620 | static int igb_pci_sriov_configure(struct pci_dev *dev, int num_vfs) | |
7621 | { | |
7622 | #ifdef CONFIG_PCI_IOV | |
7623 | if (num_vfs == 0) | |
7624 | return igb_pci_disable_sriov(dev); | |
7625 | else | |
7626 | return igb_pci_enable_sriov(dev, num_vfs); | |
7627 | #endif | |
7628 | return 0; | |
7629 | } | |
7630 | ||
9d5c8243 | 7631 | #ifdef CONFIG_NET_POLL_CONTROLLER |
b980ac18 | 7632 | /* Polling 'interrupt' - used by things like netconsole to send skbs |
9d5c8243 AK |
7633 | * without having to re-enable interrupts. It's not called while |
7634 | * the interrupt routine is executing. | |
7635 | */ | |
7636 | static void igb_netpoll(struct net_device *netdev) | |
7637 | { | |
7638 | struct igb_adapter *adapter = netdev_priv(netdev); | |
eebbbdba | 7639 | struct e1000_hw *hw = &adapter->hw; |
0d1ae7f4 | 7640 | struct igb_q_vector *q_vector; |
9d5c8243 | 7641 | int i; |
9d5c8243 | 7642 | |
047e0030 | 7643 | for (i = 0; i < adapter->num_q_vectors; i++) { |
0d1ae7f4 | 7644 | q_vector = adapter->q_vector[i]; |
cd14ef54 | 7645 | if (adapter->flags & IGB_FLAG_HAS_MSIX) |
0d1ae7f4 AD |
7646 | wr32(E1000_EIMC, q_vector->eims_value); |
7647 | else | |
7648 | igb_irq_disable(adapter); | |
047e0030 | 7649 | napi_schedule(&q_vector->napi); |
eebbbdba | 7650 | } |
9d5c8243 AK |
7651 | } |
7652 | #endif /* CONFIG_NET_POLL_CONTROLLER */ | |
7653 | ||
7654 | /** | |
b980ac18 JK |
7655 | * igb_io_error_detected - called when PCI error is detected |
7656 | * @pdev: Pointer to PCI device | |
7657 | * @state: The current pci connection state | |
9d5c8243 | 7658 | * |
b980ac18 JK |
7659 | * This function is called after a PCI bus error affecting |
7660 | * this device has been detected. | |
7661 | **/ | |
9d5c8243 AK |
7662 | static pci_ers_result_t igb_io_error_detected(struct pci_dev *pdev, |
7663 | pci_channel_state_t state) | |
7664 | { | |
7665 | struct net_device *netdev = pci_get_drvdata(pdev); | |
7666 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7667 | ||
7668 | netif_device_detach(netdev); | |
7669 | ||
59ed6eec AD |
7670 | if (state == pci_channel_io_perm_failure) |
7671 | return PCI_ERS_RESULT_DISCONNECT; | |
7672 | ||
9d5c8243 AK |
7673 | if (netif_running(netdev)) |
7674 | igb_down(adapter); | |
7675 | pci_disable_device(pdev); | |
7676 | ||
7677 | /* Request a slot slot reset. */ | |
7678 | return PCI_ERS_RESULT_NEED_RESET; | |
7679 | } | |
7680 | ||
7681 | /** | |
b980ac18 JK |
7682 | * igb_io_slot_reset - called after the pci bus has been reset. |
7683 | * @pdev: Pointer to PCI device | |
9d5c8243 | 7684 | * |
b980ac18 JK |
7685 | * Restart the card from scratch, as if from a cold-boot. Implementation |
7686 | * resembles the first-half of the igb_resume routine. | |
7687 | **/ | |
9d5c8243 AK |
7688 | static pci_ers_result_t igb_io_slot_reset(struct pci_dev *pdev) |
7689 | { | |
7690 | struct net_device *netdev = pci_get_drvdata(pdev); | |
7691 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7692 | struct e1000_hw *hw = &adapter->hw; | |
40a914fa | 7693 | pci_ers_result_t result; |
42bfd33a | 7694 | int err; |
9d5c8243 | 7695 | |
aed5dec3 | 7696 | if (pci_enable_device_mem(pdev)) { |
9d5c8243 AK |
7697 | dev_err(&pdev->dev, |
7698 | "Cannot re-enable PCI device after reset.\n"); | |
40a914fa AD |
7699 | result = PCI_ERS_RESULT_DISCONNECT; |
7700 | } else { | |
7701 | pci_set_master(pdev); | |
7702 | pci_restore_state(pdev); | |
b94f2d77 | 7703 | pci_save_state(pdev); |
9d5c8243 | 7704 | |
40a914fa AD |
7705 | pci_enable_wake(pdev, PCI_D3hot, 0); |
7706 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
9d5c8243 | 7707 | |
40a914fa AD |
7708 | igb_reset(adapter); |
7709 | wr32(E1000_WUS, ~0); | |
7710 | result = PCI_ERS_RESULT_RECOVERED; | |
7711 | } | |
9d5c8243 | 7712 | |
ea943d41 JK |
7713 | err = pci_cleanup_aer_uncorrect_error_status(pdev); |
7714 | if (err) { | |
b980ac18 JK |
7715 | dev_err(&pdev->dev, |
7716 | "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n", | |
7717 | err); | |
ea943d41 JK |
7718 | /* non-fatal, continue */ |
7719 | } | |
40a914fa AD |
7720 | |
7721 | return result; | |
9d5c8243 AK |
7722 | } |
7723 | ||
7724 | /** | |
b980ac18 JK |
7725 | * igb_io_resume - called when traffic can start flowing again. |
7726 | * @pdev: Pointer to PCI device | |
9d5c8243 | 7727 | * |
b980ac18 JK |
7728 | * This callback is called when the error recovery driver tells us that |
7729 | * its OK to resume normal operation. Implementation resembles the | |
7730 | * second-half of the igb_resume routine. | |
9d5c8243 AK |
7731 | */ |
7732 | static void igb_io_resume(struct pci_dev *pdev) | |
7733 | { | |
7734 | struct net_device *netdev = pci_get_drvdata(pdev); | |
7735 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7736 | ||
9d5c8243 AK |
7737 | if (netif_running(netdev)) { |
7738 | if (igb_up(adapter)) { | |
7739 | dev_err(&pdev->dev, "igb_up failed after reset\n"); | |
7740 | return; | |
7741 | } | |
7742 | } | |
7743 | ||
7744 | netif_device_attach(netdev); | |
7745 | ||
7746 | /* let the f/w know that the h/w is now under the control of the | |
b980ac18 JK |
7747 | * driver. |
7748 | */ | |
9d5c8243 | 7749 | igb_get_hw_control(adapter); |
9d5c8243 AK |
7750 | } |
7751 | ||
26ad9178 | 7752 | static void igb_rar_set_qsel(struct igb_adapter *adapter, u8 *addr, u32 index, |
b980ac18 | 7753 | u8 qsel) |
26ad9178 AD |
7754 | { |
7755 | u32 rar_low, rar_high; | |
7756 | struct e1000_hw *hw = &adapter->hw; | |
7757 | ||
7758 | /* HW expects these in little endian so we reverse the byte order | |
7759 | * from network order (big endian) to little endian | |
7760 | */ | |
7761 | rar_low = ((u32) addr[0] | ((u32) addr[1] << 8) | | |
b980ac18 | 7762 | ((u32) addr[2] << 16) | ((u32) addr[3] << 24)); |
26ad9178 AD |
7763 | rar_high = ((u32) addr[4] | ((u32) addr[5] << 8)); |
7764 | ||
7765 | /* Indicate to hardware the Address is Valid. */ | |
7766 | rar_high |= E1000_RAH_AV; | |
7767 | ||
7768 | if (hw->mac.type == e1000_82575) | |
7769 | rar_high |= E1000_RAH_POOL_1 * qsel; | |
7770 | else | |
7771 | rar_high |= E1000_RAH_POOL_1 << qsel; | |
7772 | ||
7773 | wr32(E1000_RAL(index), rar_low); | |
7774 | wrfl(); | |
7775 | wr32(E1000_RAH(index), rar_high); | |
7776 | wrfl(); | |
7777 | } | |
7778 | ||
4ae196df | 7779 | static int igb_set_vf_mac(struct igb_adapter *adapter, |
b980ac18 | 7780 | int vf, unsigned char *mac_addr) |
4ae196df AD |
7781 | { |
7782 | struct e1000_hw *hw = &adapter->hw; | |
ff41f8dc | 7783 | /* VF MAC addresses start at end of receive addresses and moves |
b980ac18 JK |
7784 | * towards the first, as a result a collision should not be possible |
7785 | */ | |
ff41f8dc | 7786 | int rar_entry = hw->mac.rar_entry_count - (vf + 1); |
4ae196df | 7787 | |
37680117 | 7788 | memcpy(adapter->vf_data[vf].vf_mac_addresses, mac_addr, ETH_ALEN); |
4ae196df | 7789 | |
26ad9178 | 7790 | igb_rar_set_qsel(adapter, mac_addr, rar_entry, vf); |
4ae196df AD |
7791 | |
7792 | return 0; | |
7793 | } | |
7794 | ||
8151d294 WM |
7795 | static int igb_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) |
7796 | { | |
7797 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7798 | if (!is_valid_ether_addr(mac) || (vf >= adapter->vfs_allocated_count)) | |
7799 | return -EINVAL; | |
7800 | adapter->vf_data[vf].flags |= IGB_VF_FLAG_PF_SET_MAC; | |
7801 | dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf); | |
b980ac18 JK |
7802 | dev_info(&adapter->pdev->dev, |
7803 | "Reload the VF driver to make this change effective."); | |
8151d294 | 7804 | if (test_bit(__IGB_DOWN, &adapter->state)) { |
b980ac18 JK |
7805 | dev_warn(&adapter->pdev->dev, |
7806 | "The VF MAC address has been set, but the PF device is not up.\n"); | |
7807 | dev_warn(&adapter->pdev->dev, | |
7808 | "Bring the PF device up before attempting to use the VF device.\n"); | |
8151d294 WM |
7809 | } |
7810 | return igb_set_vf_mac(adapter, vf, mac); | |
7811 | } | |
7812 | ||
17dc566c LL |
7813 | static int igb_link_mbps(int internal_link_speed) |
7814 | { | |
7815 | switch (internal_link_speed) { | |
7816 | case SPEED_100: | |
7817 | return 100; | |
7818 | case SPEED_1000: | |
7819 | return 1000; | |
7820 | default: | |
7821 | return 0; | |
7822 | } | |
7823 | } | |
7824 | ||
7825 | static void igb_set_vf_rate_limit(struct e1000_hw *hw, int vf, int tx_rate, | |
7826 | int link_speed) | |
7827 | { | |
7828 | int rf_dec, rf_int; | |
7829 | u32 bcnrc_val; | |
7830 | ||
7831 | if (tx_rate != 0) { | |
7832 | /* Calculate the rate factor values to set */ | |
7833 | rf_int = link_speed / tx_rate; | |
7834 | rf_dec = (link_speed - (rf_int * tx_rate)); | |
b980ac18 JK |
7835 | rf_dec = (rf_dec * (1 << E1000_RTTBCNRC_RF_INT_SHIFT)) / |
7836 | tx_rate; | |
17dc566c LL |
7837 | |
7838 | bcnrc_val = E1000_RTTBCNRC_RS_ENA; | |
b980ac18 JK |
7839 | bcnrc_val |= ((rf_int << E1000_RTTBCNRC_RF_INT_SHIFT) & |
7840 | E1000_RTTBCNRC_RF_INT_MASK); | |
17dc566c LL |
7841 | bcnrc_val |= (rf_dec & E1000_RTTBCNRC_RF_DEC_MASK); |
7842 | } else { | |
7843 | bcnrc_val = 0; | |
7844 | } | |
7845 | ||
7846 | wr32(E1000_RTTDQSEL, vf); /* vf X uses queue X */ | |
b980ac18 | 7847 | /* Set global transmit compensation time to the MMW_SIZE in RTTBCNRM |
f00b0da7 LL |
7848 | * register. MMW_SIZE=0x014 if 9728-byte jumbo is supported. |
7849 | */ | |
7850 | wr32(E1000_RTTBCNRM, 0x14); | |
17dc566c LL |
7851 | wr32(E1000_RTTBCNRC, bcnrc_val); |
7852 | } | |
7853 | ||
7854 | static void igb_check_vf_rate_limit(struct igb_adapter *adapter) | |
7855 | { | |
7856 | int actual_link_speed, i; | |
7857 | bool reset_rate = false; | |
7858 | ||
7859 | /* VF TX rate limit was not set or not supported */ | |
7860 | if ((adapter->vf_rate_link_speed == 0) || | |
7861 | (adapter->hw.mac.type != e1000_82576)) | |
7862 | return; | |
7863 | ||
7864 | actual_link_speed = igb_link_mbps(adapter->link_speed); | |
7865 | if (actual_link_speed != adapter->vf_rate_link_speed) { | |
7866 | reset_rate = true; | |
7867 | adapter->vf_rate_link_speed = 0; | |
7868 | dev_info(&adapter->pdev->dev, | |
b980ac18 | 7869 | "Link speed has been changed. VF Transmit rate is disabled\n"); |
17dc566c LL |
7870 | } |
7871 | ||
7872 | for (i = 0; i < adapter->vfs_allocated_count; i++) { | |
7873 | if (reset_rate) | |
7874 | adapter->vf_data[i].tx_rate = 0; | |
7875 | ||
7876 | igb_set_vf_rate_limit(&adapter->hw, i, | |
b980ac18 JK |
7877 | adapter->vf_data[i].tx_rate, |
7878 | actual_link_speed); | |
17dc566c LL |
7879 | } |
7880 | } | |
7881 | ||
8151d294 WM |
7882 | static int igb_ndo_set_vf_bw(struct net_device *netdev, int vf, int tx_rate) |
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 | ||
7891 | actual_link_speed = igb_link_mbps(adapter->link_speed); | |
7892 | if ((vf >= adapter->vfs_allocated_count) || | |
7893 | (!(rd32(E1000_STATUS) & E1000_STATUS_LU)) || | |
7894 | (tx_rate < 0) || (tx_rate > actual_link_speed)) | |
7895 | return -EINVAL; | |
7896 | ||
7897 | adapter->vf_rate_link_speed = actual_link_speed; | |
7898 | adapter->vf_data[vf].tx_rate = (u16)tx_rate; | |
7899 | igb_set_vf_rate_limit(hw, vf, tx_rate, actual_link_speed); | |
7900 | ||
7901 | return 0; | |
8151d294 WM |
7902 | } |
7903 | ||
70ea4783 LL |
7904 | static int igb_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, |
7905 | bool setting) | |
7906 | { | |
7907 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7908 | struct e1000_hw *hw = &adapter->hw; | |
7909 | u32 reg_val, reg_offset; | |
7910 | ||
7911 | if (!adapter->vfs_allocated_count) | |
7912 | return -EOPNOTSUPP; | |
7913 | ||
7914 | if (vf >= adapter->vfs_allocated_count) | |
7915 | return -EINVAL; | |
7916 | ||
7917 | reg_offset = (hw->mac.type == e1000_82576) ? E1000_DTXSWC : E1000_TXSWC; | |
7918 | reg_val = rd32(reg_offset); | |
7919 | if (setting) | |
7920 | reg_val |= ((1 << vf) | | |
7921 | (1 << (vf + E1000_DTXSWC_VLAN_SPOOF_SHIFT))); | |
7922 | else | |
7923 | reg_val &= ~((1 << vf) | | |
7924 | (1 << (vf + E1000_DTXSWC_VLAN_SPOOF_SHIFT))); | |
7925 | wr32(reg_offset, reg_val); | |
7926 | ||
7927 | adapter->vf_data[vf].spoofchk_enabled = setting; | |
7928 | return E1000_SUCCESS; | |
7929 | } | |
7930 | ||
8151d294 WM |
7931 | static int igb_ndo_get_vf_config(struct net_device *netdev, |
7932 | int vf, struct ifla_vf_info *ivi) | |
7933 | { | |
7934 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7935 | if (vf >= adapter->vfs_allocated_count) | |
7936 | return -EINVAL; | |
7937 | ivi->vf = vf; | |
7938 | memcpy(&ivi->mac, adapter->vf_data[vf].vf_mac_addresses, ETH_ALEN); | |
17dc566c | 7939 | ivi->tx_rate = adapter->vf_data[vf].tx_rate; |
8151d294 WM |
7940 | ivi->vlan = adapter->vf_data[vf].pf_vlan; |
7941 | ivi->qos = adapter->vf_data[vf].pf_qos; | |
70ea4783 | 7942 | ivi->spoofchk = adapter->vf_data[vf].spoofchk_enabled; |
8151d294 WM |
7943 | return 0; |
7944 | } | |
7945 | ||
4ae196df AD |
7946 | static void igb_vmm_control(struct igb_adapter *adapter) |
7947 | { | |
7948 | struct e1000_hw *hw = &adapter->hw; | |
10d8e907 | 7949 | u32 reg; |
4ae196df | 7950 | |
52a1dd4d AD |
7951 | switch (hw->mac.type) { |
7952 | case e1000_82575: | |
f96a8a0b CW |
7953 | case e1000_i210: |
7954 | case e1000_i211: | |
ceb5f13b | 7955 | case e1000_i354: |
52a1dd4d AD |
7956 | default: |
7957 | /* replication is not supported for 82575 */ | |
4ae196df | 7958 | return; |
52a1dd4d AD |
7959 | case e1000_82576: |
7960 | /* notify HW that the MAC is adding vlan tags */ | |
7961 | reg = rd32(E1000_DTXCTL); | |
7962 | reg |= E1000_DTXCTL_VLAN_ADDED; | |
7963 | wr32(E1000_DTXCTL, reg); | |
b26141d4 | 7964 | /* Fall through */ |
52a1dd4d AD |
7965 | case e1000_82580: |
7966 | /* enable replication vlan tag stripping */ | |
7967 | reg = rd32(E1000_RPLOLR); | |
7968 | reg |= E1000_RPLOLR_STRVLAN; | |
7969 | wr32(E1000_RPLOLR, reg); | |
b26141d4 | 7970 | /* Fall through */ |
d2ba2ed8 AD |
7971 | case e1000_i350: |
7972 | /* none of the above registers are supported by i350 */ | |
52a1dd4d AD |
7973 | break; |
7974 | } | |
10d8e907 | 7975 | |
d4960307 AD |
7976 | if (adapter->vfs_allocated_count) { |
7977 | igb_vmdq_set_loopback_pf(hw, true); | |
7978 | igb_vmdq_set_replication_pf(hw, true); | |
13800469 | 7979 | igb_vmdq_set_anti_spoofing_pf(hw, true, |
b980ac18 | 7980 | adapter->vfs_allocated_count); |
d4960307 AD |
7981 | } else { |
7982 | igb_vmdq_set_loopback_pf(hw, false); | |
7983 | igb_vmdq_set_replication_pf(hw, false); | |
7984 | } | |
4ae196df AD |
7985 | } |
7986 | ||
b6e0c419 CW |
7987 | static void igb_init_dmac(struct igb_adapter *adapter, u32 pba) |
7988 | { | |
7989 | struct e1000_hw *hw = &adapter->hw; | |
7990 | u32 dmac_thr; | |
7991 | u16 hwm; | |
7992 | ||
7993 | if (hw->mac.type > e1000_82580) { | |
7994 | if (adapter->flags & IGB_FLAG_DMAC) { | |
7995 | u32 reg; | |
7996 | ||
7997 | /* force threshold to 0. */ | |
7998 | wr32(E1000_DMCTXTH, 0); | |
7999 | ||
b980ac18 | 8000 | /* DMA Coalescing high water mark needs to be greater |
e8c626e9 MV |
8001 | * than the Rx threshold. Set hwm to PBA - max frame |
8002 | * size in 16B units, capping it at PBA - 6KB. | |
b6e0c419 | 8003 | */ |
e8c626e9 MV |
8004 | hwm = 64 * pba - adapter->max_frame_size / 16; |
8005 | if (hwm < 64 * (pba - 6)) | |
8006 | hwm = 64 * (pba - 6); | |
8007 | reg = rd32(E1000_FCRTC); | |
8008 | reg &= ~E1000_FCRTC_RTH_COAL_MASK; | |
8009 | reg |= ((hwm << E1000_FCRTC_RTH_COAL_SHIFT) | |
8010 | & E1000_FCRTC_RTH_COAL_MASK); | |
8011 | wr32(E1000_FCRTC, reg); | |
8012 | ||
b980ac18 | 8013 | /* Set the DMA Coalescing Rx threshold to PBA - 2 * max |
e8c626e9 MV |
8014 | * frame size, capping it at PBA - 10KB. |
8015 | */ | |
8016 | dmac_thr = pba - adapter->max_frame_size / 512; | |
8017 | if (dmac_thr < pba - 10) | |
8018 | dmac_thr = pba - 10; | |
b6e0c419 CW |
8019 | reg = rd32(E1000_DMACR); |
8020 | reg &= ~E1000_DMACR_DMACTHR_MASK; | |
b6e0c419 CW |
8021 | reg |= ((dmac_thr << E1000_DMACR_DMACTHR_SHIFT) |
8022 | & E1000_DMACR_DMACTHR_MASK); | |
8023 | ||
8024 | /* transition to L0x or L1 if available..*/ | |
8025 | reg |= (E1000_DMACR_DMAC_EN | E1000_DMACR_DMAC_LX_MASK); | |
8026 | ||
8027 | /* watchdog timer= +-1000 usec in 32usec intervals */ | |
8028 | reg |= (1000 >> 5); | |
0c02dd98 MV |
8029 | |
8030 | /* Disable BMC-to-OS Watchdog Enable */ | |
ceb5f13b CW |
8031 | if (hw->mac.type != e1000_i354) |
8032 | reg &= ~E1000_DMACR_DC_BMC2OSW_EN; | |
8033 | ||
b6e0c419 CW |
8034 | wr32(E1000_DMACR, reg); |
8035 | ||
b980ac18 | 8036 | /* no lower threshold to disable |
b6e0c419 CW |
8037 | * coalescing(smart fifb)-UTRESH=0 |
8038 | */ | |
8039 | wr32(E1000_DMCRTRH, 0); | |
b6e0c419 CW |
8040 | |
8041 | reg = (IGB_DMCTLX_DCFLUSH_DIS | 0x4); | |
8042 | ||
8043 | wr32(E1000_DMCTLX, reg); | |
8044 | ||
b980ac18 | 8045 | /* free space in tx packet buffer to wake from |
b6e0c419 CW |
8046 | * DMA coal |
8047 | */ | |
8048 | wr32(E1000_DMCTXTH, (IGB_MIN_TXPBSIZE - | |
8049 | (IGB_TX_BUF_4096 + adapter->max_frame_size)) >> 6); | |
8050 | ||
b980ac18 | 8051 | /* make low power state decision controlled |
b6e0c419 CW |
8052 | * by DMA coal |
8053 | */ | |
8054 | reg = rd32(E1000_PCIEMISC); | |
8055 | reg &= ~E1000_PCIEMISC_LX_DECISION; | |
8056 | wr32(E1000_PCIEMISC, reg); | |
8057 | } /* endif adapter->dmac is not disabled */ | |
8058 | } else if (hw->mac.type == e1000_82580) { | |
8059 | u32 reg = rd32(E1000_PCIEMISC); | |
9005df38 | 8060 | |
b6e0c419 CW |
8061 | wr32(E1000_PCIEMISC, reg & ~E1000_PCIEMISC_LX_DECISION); |
8062 | wr32(E1000_DMACR, 0); | |
8063 | } | |
8064 | } | |
8065 | ||
b980ac18 JK |
8066 | /** |
8067 | * igb_read_i2c_byte - Reads 8 bit word over I2C | |
441fc6fd CW |
8068 | * @hw: pointer to hardware structure |
8069 | * @byte_offset: byte offset to read | |
8070 | * @dev_addr: device address | |
8071 | * @data: value read | |
8072 | * | |
8073 | * Performs byte read operation over I2C interface at | |
8074 | * a specified device address. | |
b980ac18 | 8075 | **/ |
441fc6fd | 8076 | s32 igb_read_i2c_byte(struct e1000_hw *hw, u8 byte_offset, |
b980ac18 | 8077 | u8 dev_addr, u8 *data) |
441fc6fd CW |
8078 | { |
8079 | struct igb_adapter *adapter = container_of(hw, struct igb_adapter, hw); | |
603e86fa | 8080 | struct i2c_client *this_client = adapter->i2c_client; |
441fc6fd CW |
8081 | s32 status; |
8082 | u16 swfw_mask = 0; | |
8083 | ||
8084 | if (!this_client) | |
8085 | return E1000_ERR_I2C; | |
8086 | ||
8087 | swfw_mask = E1000_SWFW_PHY0_SM; | |
8088 | ||
8089 | if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask) | |
8090 | != E1000_SUCCESS) | |
8091 | return E1000_ERR_SWFW_SYNC; | |
8092 | ||
8093 | status = i2c_smbus_read_byte_data(this_client, byte_offset); | |
8094 | hw->mac.ops.release_swfw_sync(hw, swfw_mask); | |
8095 | ||
8096 | if (status < 0) | |
8097 | return E1000_ERR_I2C; | |
8098 | else { | |
8099 | *data = status; | |
8100 | return E1000_SUCCESS; | |
8101 | } | |
8102 | } | |
8103 | ||
b980ac18 JK |
8104 | /** |
8105 | * igb_write_i2c_byte - Writes 8 bit word over I2C | |
441fc6fd CW |
8106 | * @hw: pointer to hardware structure |
8107 | * @byte_offset: byte offset to write | |
8108 | * @dev_addr: device address | |
8109 | * @data: value to write | |
8110 | * | |
8111 | * Performs byte write operation over I2C interface at | |
8112 | * a specified device address. | |
b980ac18 | 8113 | **/ |
441fc6fd | 8114 | s32 igb_write_i2c_byte(struct e1000_hw *hw, u8 byte_offset, |
b980ac18 | 8115 | u8 dev_addr, u8 data) |
441fc6fd CW |
8116 | { |
8117 | struct igb_adapter *adapter = container_of(hw, struct igb_adapter, hw); | |
603e86fa | 8118 | struct i2c_client *this_client = adapter->i2c_client; |
441fc6fd CW |
8119 | s32 status; |
8120 | u16 swfw_mask = E1000_SWFW_PHY0_SM; | |
8121 | ||
8122 | if (!this_client) | |
8123 | return E1000_ERR_I2C; | |
8124 | ||
8125 | if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask) != E1000_SUCCESS) | |
8126 | return E1000_ERR_SWFW_SYNC; | |
8127 | status = i2c_smbus_write_byte_data(this_client, byte_offset, data); | |
8128 | hw->mac.ops.release_swfw_sync(hw, swfw_mask); | |
8129 | ||
8130 | if (status) | |
8131 | return E1000_ERR_I2C; | |
8132 | else | |
8133 | return E1000_SUCCESS; | |
8134 | ||
8135 | } | |
907b7835 LMV |
8136 | |
8137 | int igb_reinit_queues(struct igb_adapter *adapter) | |
8138 | { | |
8139 | struct net_device *netdev = adapter->netdev; | |
8140 | struct pci_dev *pdev = adapter->pdev; | |
8141 | int err = 0; | |
8142 | ||
8143 | if (netif_running(netdev)) | |
8144 | igb_close(netdev); | |
8145 | ||
02ef6e1d | 8146 | igb_reset_interrupt_capability(adapter); |
907b7835 LMV |
8147 | |
8148 | if (igb_init_interrupt_scheme(adapter, true)) { | |
8149 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); | |
8150 | return -ENOMEM; | |
8151 | } | |
8152 | ||
8153 | if (netif_running(netdev)) | |
8154 | err = igb_open(netdev); | |
8155 | ||
8156 | return err; | |
8157 | } | |
9d5c8243 | 8158 | /* igb_main.c */ |