Commit | Line | Data |
---|---|---|
e52c0f96 CW |
1 | /* Intel(R) Gigabit Ethernet Linux driver |
2 | * Copyright(c) 2007-2014 Intel Corporation. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms and conditions of the GNU General Public License, | |
6 | * version 2, as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, see <http://www.gnu.org/licenses/>. | |
15 | * | |
16 | * The full GNU General Public License is included in this distribution in | |
17 | * the file called "COPYING". | |
18 | * | |
19 | * Contact Information: | |
20 | * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> | |
21 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
22 | */ | |
9d5c8243 | 23 | |
876d2d6f JK |
24 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
25 | ||
9d5c8243 AK |
26 | #include <linux/module.h> |
27 | #include <linux/types.h> | |
28 | #include <linux/init.h> | |
b2cb09b1 | 29 | #include <linux/bitops.h> |
9d5c8243 AK |
30 | #include <linux/vmalloc.h> |
31 | #include <linux/pagemap.h> | |
32 | #include <linux/netdevice.h> | |
9d5c8243 | 33 | #include <linux/ipv6.h> |
5a0e3ad6 | 34 | #include <linux/slab.h> |
9d5c8243 AK |
35 | #include <net/checksum.h> |
36 | #include <net/ip6_checksum.h> | |
c6cb090b | 37 | #include <linux/net_tstamp.h> |
9d5c8243 AK |
38 | #include <linux/mii.h> |
39 | #include <linux/ethtool.h> | |
01789349 | 40 | #include <linux/if.h> |
9d5c8243 AK |
41 | #include <linux/if_vlan.h> |
42 | #include <linux/pci.h> | |
c54106bb | 43 | #include <linux/pci-aspm.h> |
9d5c8243 AK |
44 | #include <linux/delay.h> |
45 | #include <linux/interrupt.h> | |
7d13a7d0 AD |
46 | #include <linux/ip.h> |
47 | #include <linux/tcp.h> | |
48 | #include <linux/sctp.h> | |
9d5c8243 | 49 | #include <linux/if_ether.h> |
40a914fa | 50 | #include <linux/aer.h> |
70c71606 | 51 | #include <linux/prefetch.h> |
749ab2cd | 52 | #include <linux/pm_runtime.h> |
421e02f0 | 53 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
54 | #include <linux/dca.h> |
55 | #endif | |
441fc6fd | 56 | #include <linux/i2c.h> |
9d5c8243 AK |
57 | #include "igb.h" |
58 | ||
67b1b903 | 59 | #define MAJ 5 |
6fb46902 TF |
60 | #define MIN 3 |
61 | #define BUILD 0 | |
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 *); |
32b3e08f | 154 | static int igb_clean_rx_irq(struct igb_q_vector *, int); |
9d5c8243 AK |
155 | static int igb_ioctl(struct net_device *, struct ifreq *, int cmd); |
156 | static void igb_tx_timeout(struct net_device *); | |
157 | static void igb_reset_task(struct work_struct *); | |
c502ea2e CW |
158 | static void igb_vlan_mode(struct net_device *netdev, |
159 | netdev_features_t features); | |
80d5c368 PM |
160 | static int igb_vlan_rx_add_vid(struct net_device *, __be16, u16); |
161 | static int igb_vlan_rx_kill_vid(struct net_device *, __be16, u16); | |
9d5c8243 | 162 | static void igb_restore_vlan(struct igb_adapter *); |
26ad9178 | 163 | static void igb_rar_set_qsel(struct igb_adapter *, u8 *, u32 , u8); |
4ae196df AD |
164 | static void igb_ping_all_vfs(struct igb_adapter *); |
165 | static void igb_msg_task(struct igb_adapter *); | |
4ae196df | 166 | static void igb_vmm_control(struct igb_adapter *); |
f2ca0dbe | 167 | static int igb_set_vf_mac(struct igb_adapter *, int, unsigned char *); |
4ae196df | 168 | static void igb_restore_vf_multicasts(struct igb_adapter *adapter); |
8151d294 WM |
169 | static int igb_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac); |
170 | static int igb_ndo_set_vf_vlan(struct net_device *netdev, | |
171 | int vf, u16 vlan, u8 qos); | |
ed616689 | 172 | static int igb_ndo_set_vf_bw(struct net_device *, int, int, int); |
70ea4783 LL |
173 | static int igb_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, |
174 | bool setting); | |
8151d294 WM |
175 | static int igb_ndo_get_vf_config(struct net_device *netdev, int vf, |
176 | struct ifla_vf_info *ivi); | |
17dc566c | 177 | static void igb_check_vf_rate_limit(struct igb_adapter *); |
46a01698 RL |
178 | |
179 | #ifdef CONFIG_PCI_IOV | |
0224d663 | 180 | static int igb_vf_configure(struct igb_adapter *adapter, int vf); |
781798a1 | 181 | static int igb_pci_enable_sriov(struct pci_dev *dev, int num_vfs); |
ceee3450 TF |
182 | static int igb_disable_sriov(struct pci_dev *dev); |
183 | static int igb_pci_disable_sriov(struct pci_dev *dev); | |
46a01698 | 184 | #endif |
9d5c8243 | 185 | |
9d5c8243 | 186 | #ifdef CONFIG_PM |
d9dd966d | 187 | #ifdef CONFIG_PM_SLEEP |
749ab2cd | 188 | static int igb_suspend(struct device *); |
d9dd966d | 189 | #endif |
749ab2cd | 190 | static int igb_resume(struct device *); |
749ab2cd YZ |
191 | static int igb_runtime_suspend(struct device *dev); |
192 | static int igb_runtime_resume(struct device *dev); | |
193 | static int igb_runtime_idle(struct device *dev); | |
749ab2cd YZ |
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 | */ | |
17a402a0 CW |
1015 | if (q_vector) |
1016 | kfree_rcu(q_vector, rcu); | |
02ef6e1d CW |
1017 | } |
1018 | ||
1019 | /** | |
1020 | * igb_reset_q_vector - Reset config for interrupt vector | |
1021 | * @adapter: board private structure to initialize | |
1022 | * @v_idx: Index of vector to be reset | |
1023 | * | |
1024 | * If NAPI is enabled it will delete any references to the | |
1025 | * NAPI struct. This is preparation for igb_free_q_vector. | |
1026 | **/ | |
1027 | static void igb_reset_q_vector(struct igb_adapter *adapter, int v_idx) | |
1028 | { | |
1029 | struct igb_q_vector *q_vector = adapter->q_vector[v_idx]; | |
1030 | ||
cb06d102 CP |
1031 | /* Coming from igb_set_interrupt_capability, the vectors are not yet |
1032 | * allocated. So, q_vector is NULL so we should stop here. | |
1033 | */ | |
1034 | if (!q_vector) | |
1035 | return; | |
1036 | ||
5536d210 AD |
1037 | if (q_vector->tx.ring) |
1038 | adapter->tx_ring[q_vector->tx.ring->queue_index] = NULL; | |
1039 | ||
1040 | if (q_vector->rx.ring) | |
2439fc4d | 1041 | adapter->rx_ring[q_vector->rx.ring->queue_index] = NULL; |
5536d210 | 1042 | |
5536d210 AD |
1043 | netif_napi_del(&q_vector->napi); |
1044 | ||
02ef6e1d CW |
1045 | } |
1046 | ||
1047 | static void igb_reset_interrupt_capability(struct igb_adapter *adapter) | |
1048 | { | |
1049 | int v_idx = adapter->num_q_vectors; | |
1050 | ||
cd14ef54 | 1051 | if (adapter->flags & IGB_FLAG_HAS_MSIX) |
02ef6e1d | 1052 | pci_disable_msix(adapter->pdev); |
cd14ef54 | 1053 | else if (adapter->flags & IGB_FLAG_HAS_MSI) |
02ef6e1d | 1054 | pci_disable_msi(adapter->pdev); |
02ef6e1d CW |
1055 | |
1056 | while (v_idx--) | |
1057 | igb_reset_q_vector(adapter, v_idx); | |
5536d210 AD |
1058 | } |
1059 | ||
047e0030 | 1060 | /** |
b980ac18 JK |
1061 | * igb_free_q_vectors - Free memory allocated for interrupt vectors |
1062 | * @adapter: board private structure to initialize | |
047e0030 | 1063 | * |
b980ac18 JK |
1064 | * This function frees the memory allocated to the q_vectors. In addition if |
1065 | * NAPI is enabled it will delete any references to the NAPI struct prior | |
1066 | * to freeing the q_vector. | |
047e0030 AD |
1067 | **/ |
1068 | static void igb_free_q_vectors(struct igb_adapter *adapter) | |
1069 | { | |
5536d210 AD |
1070 | int v_idx = adapter->num_q_vectors; |
1071 | ||
1072 | adapter->num_tx_queues = 0; | |
1073 | adapter->num_rx_queues = 0; | |
047e0030 | 1074 | adapter->num_q_vectors = 0; |
5536d210 | 1075 | |
02ef6e1d CW |
1076 | while (v_idx--) { |
1077 | igb_reset_q_vector(adapter, v_idx); | |
5536d210 | 1078 | igb_free_q_vector(adapter, v_idx); |
02ef6e1d | 1079 | } |
047e0030 AD |
1080 | } |
1081 | ||
1082 | /** | |
b980ac18 JK |
1083 | * igb_clear_interrupt_scheme - reset the device to a state of no interrupts |
1084 | * @adapter: board private structure to initialize | |
047e0030 | 1085 | * |
b980ac18 JK |
1086 | * This function resets the device so that it has 0 Rx queues, Tx queues, and |
1087 | * MSI-X interrupts allocated. | |
047e0030 AD |
1088 | */ |
1089 | static void igb_clear_interrupt_scheme(struct igb_adapter *adapter) | |
1090 | { | |
047e0030 AD |
1091 | igb_free_q_vectors(adapter); |
1092 | igb_reset_interrupt_capability(adapter); | |
1093 | } | |
9d5c8243 AK |
1094 | |
1095 | /** | |
b980ac18 JK |
1096 | * igb_set_interrupt_capability - set MSI or MSI-X if supported |
1097 | * @adapter: board private structure to initialize | |
1098 | * @msix: boolean value of MSIX capability | |
9d5c8243 | 1099 | * |
b980ac18 JK |
1100 | * Attempt to configure interrupts using the best available |
1101 | * capabilities of the hardware and kernel. | |
9d5c8243 | 1102 | **/ |
53c7d064 | 1103 | static void igb_set_interrupt_capability(struct igb_adapter *adapter, bool msix) |
9d5c8243 AK |
1104 | { |
1105 | int err; | |
1106 | int numvecs, i; | |
1107 | ||
53c7d064 SA |
1108 | if (!msix) |
1109 | goto msi_only; | |
cd14ef54 | 1110 | adapter->flags |= IGB_FLAG_HAS_MSIX; |
53c7d064 | 1111 | |
83b7180d | 1112 | /* Number of supported queues. */ |
a99955fc | 1113 | adapter->num_rx_queues = adapter->rss_queues; |
5fa8517f GR |
1114 | if (adapter->vfs_allocated_count) |
1115 | adapter->num_tx_queues = 1; | |
1116 | else | |
1117 | adapter->num_tx_queues = adapter->rss_queues; | |
83b7180d | 1118 | |
b980ac18 | 1119 | /* start with one vector for every Rx queue */ |
047e0030 AD |
1120 | numvecs = adapter->num_rx_queues; |
1121 | ||
b980ac18 | 1122 | /* if Tx handler is separate add 1 for every Tx queue */ |
a99955fc AD |
1123 | if (!(adapter->flags & IGB_FLAG_QUEUE_PAIRS)) |
1124 | numvecs += adapter->num_tx_queues; | |
047e0030 AD |
1125 | |
1126 | /* store the number of vectors reserved for queues */ | |
1127 | adapter->num_q_vectors = numvecs; | |
1128 | ||
1129 | /* add 1 vector for link status interrupts */ | |
1130 | numvecs++; | |
9d5c8243 AK |
1131 | for (i = 0; i < numvecs; i++) |
1132 | adapter->msix_entries[i].entry = i; | |
1133 | ||
479d02df AG |
1134 | err = pci_enable_msix_range(adapter->pdev, |
1135 | adapter->msix_entries, | |
1136 | numvecs, | |
1137 | numvecs); | |
1138 | if (err > 0) | |
0c2cc02e | 1139 | return; |
9d5c8243 AK |
1140 | |
1141 | igb_reset_interrupt_capability(adapter); | |
1142 | ||
1143 | /* If we can't do MSI-X, try MSI */ | |
1144 | msi_only: | |
b709323d | 1145 | adapter->flags &= ~IGB_FLAG_HAS_MSIX; |
2a3abf6d AD |
1146 | #ifdef CONFIG_PCI_IOV |
1147 | /* disable SR-IOV for non MSI-X configurations */ | |
1148 | if (adapter->vf_data) { | |
1149 | struct e1000_hw *hw = &adapter->hw; | |
1150 | /* disable iov and allow time for transactions to clear */ | |
1151 | pci_disable_sriov(adapter->pdev); | |
1152 | msleep(500); | |
1153 | ||
1154 | kfree(adapter->vf_data); | |
1155 | adapter->vf_data = NULL; | |
1156 | wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ); | |
945a5151 | 1157 | wrfl(); |
2a3abf6d AD |
1158 | msleep(100); |
1159 | dev_info(&adapter->pdev->dev, "IOV Disabled\n"); | |
1160 | } | |
1161 | #endif | |
4fc82adf | 1162 | adapter->vfs_allocated_count = 0; |
a99955fc | 1163 | adapter->rss_queues = 1; |
4fc82adf | 1164 | adapter->flags |= IGB_FLAG_QUEUE_PAIRS; |
9d5c8243 | 1165 | adapter->num_rx_queues = 1; |
661086df | 1166 | adapter->num_tx_queues = 1; |
047e0030 | 1167 | adapter->num_q_vectors = 1; |
9d5c8243 | 1168 | if (!pci_enable_msi(adapter->pdev)) |
7dfc16fa | 1169 | adapter->flags |= IGB_FLAG_HAS_MSI; |
9d5c8243 AK |
1170 | } |
1171 | ||
5536d210 AD |
1172 | static void igb_add_ring(struct igb_ring *ring, |
1173 | struct igb_ring_container *head) | |
1174 | { | |
1175 | head->ring = ring; | |
1176 | head->count++; | |
1177 | } | |
1178 | ||
047e0030 | 1179 | /** |
b980ac18 JK |
1180 | * igb_alloc_q_vector - Allocate memory for a single interrupt vector |
1181 | * @adapter: board private structure to initialize | |
1182 | * @v_count: q_vectors allocated on adapter, used for ring interleaving | |
1183 | * @v_idx: index of vector in adapter struct | |
1184 | * @txr_count: total number of Tx rings to allocate | |
1185 | * @txr_idx: index of first Tx ring to allocate | |
1186 | * @rxr_count: total number of Rx rings to allocate | |
1187 | * @rxr_idx: index of first Rx ring to allocate | |
047e0030 | 1188 | * |
b980ac18 | 1189 | * We allocate one q_vector. If allocation fails we return -ENOMEM. |
047e0030 | 1190 | **/ |
5536d210 AD |
1191 | static int igb_alloc_q_vector(struct igb_adapter *adapter, |
1192 | int v_count, int v_idx, | |
1193 | int txr_count, int txr_idx, | |
1194 | int rxr_count, int rxr_idx) | |
047e0030 AD |
1195 | { |
1196 | struct igb_q_vector *q_vector; | |
5536d210 AD |
1197 | struct igb_ring *ring; |
1198 | int ring_count, size; | |
047e0030 | 1199 | |
5536d210 AD |
1200 | /* igb only supports 1 Tx and/or 1 Rx queue per vector */ |
1201 | if (txr_count > 1 || rxr_count > 1) | |
1202 | return -ENOMEM; | |
1203 | ||
1204 | ring_count = txr_count + rxr_count; | |
1205 | size = sizeof(struct igb_q_vector) + | |
1206 | (sizeof(struct igb_ring) * ring_count); | |
1207 | ||
1208 | /* allocate q_vector and rings */ | |
02ef6e1d | 1209 | q_vector = adapter->q_vector[v_idx]; |
72ddef05 | 1210 | if (!q_vector) { |
02ef6e1d | 1211 | q_vector = kzalloc(size, GFP_KERNEL); |
72ddef05 SS |
1212 | } else if (size > ksize(q_vector)) { |
1213 | kfree_rcu(q_vector, rcu); | |
1214 | q_vector = kzalloc(size, GFP_KERNEL); | |
1215 | } else { | |
c0a06ee1 | 1216 | memset(q_vector, 0, size); |
72ddef05 | 1217 | } |
5536d210 AD |
1218 | if (!q_vector) |
1219 | return -ENOMEM; | |
1220 | ||
1221 | /* initialize NAPI */ | |
1222 | netif_napi_add(adapter->netdev, &q_vector->napi, | |
1223 | igb_poll, 64); | |
1224 | ||
1225 | /* tie q_vector and adapter together */ | |
1226 | adapter->q_vector[v_idx] = q_vector; | |
1227 | q_vector->adapter = adapter; | |
1228 | ||
1229 | /* initialize work limits */ | |
1230 | q_vector->tx.work_limit = adapter->tx_work_limit; | |
1231 | ||
1232 | /* initialize ITR configuration */ | |
1233 | q_vector->itr_register = adapter->hw.hw_addr + E1000_EITR(0); | |
1234 | q_vector->itr_val = IGB_START_ITR; | |
1235 | ||
1236 | /* initialize pointer to rings */ | |
1237 | ring = q_vector->ring; | |
1238 | ||
4e227667 AD |
1239 | /* intialize ITR */ |
1240 | if (rxr_count) { | |
1241 | /* rx or rx/tx vector */ | |
1242 | if (!adapter->rx_itr_setting || adapter->rx_itr_setting > 3) | |
1243 | q_vector->itr_val = adapter->rx_itr_setting; | |
1244 | } else { | |
1245 | /* tx only vector */ | |
1246 | if (!adapter->tx_itr_setting || adapter->tx_itr_setting > 3) | |
1247 | q_vector->itr_val = adapter->tx_itr_setting; | |
1248 | } | |
1249 | ||
5536d210 AD |
1250 | if (txr_count) { |
1251 | /* assign generic ring traits */ | |
1252 | ring->dev = &adapter->pdev->dev; | |
1253 | ring->netdev = adapter->netdev; | |
1254 | ||
1255 | /* configure backlink on ring */ | |
1256 | ring->q_vector = q_vector; | |
1257 | ||
1258 | /* update q_vector Tx values */ | |
1259 | igb_add_ring(ring, &q_vector->tx); | |
1260 | ||
1261 | /* For 82575, context index must be unique per ring. */ | |
1262 | if (adapter->hw.mac.type == e1000_82575) | |
1263 | set_bit(IGB_RING_FLAG_TX_CTX_IDX, &ring->flags); | |
1264 | ||
1265 | /* apply Tx specific ring traits */ | |
1266 | ring->count = adapter->tx_ring_count; | |
1267 | ring->queue_index = txr_idx; | |
1268 | ||
827da44c JS |
1269 | u64_stats_init(&ring->tx_syncp); |
1270 | u64_stats_init(&ring->tx_syncp2); | |
1271 | ||
5536d210 AD |
1272 | /* assign ring to adapter */ |
1273 | adapter->tx_ring[txr_idx] = ring; | |
1274 | ||
1275 | /* push pointer to next ring */ | |
1276 | ring++; | |
047e0030 | 1277 | } |
81c2fc22 | 1278 | |
5536d210 AD |
1279 | if (rxr_count) { |
1280 | /* assign generic ring traits */ | |
1281 | ring->dev = &adapter->pdev->dev; | |
1282 | ring->netdev = adapter->netdev; | |
047e0030 | 1283 | |
5536d210 AD |
1284 | /* configure backlink on ring */ |
1285 | ring->q_vector = q_vector; | |
047e0030 | 1286 | |
5536d210 AD |
1287 | /* update q_vector Rx values */ |
1288 | igb_add_ring(ring, &q_vector->rx); | |
047e0030 | 1289 | |
5536d210 AD |
1290 | /* set flag indicating ring supports SCTP checksum offload */ |
1291 | if (adapter->hw.mac.type >= e1000_82576) | |
1292 | set_bit(IGB_RING_FLAG_RX_SCTP_CSUM, &ring->flags); | |
047e0030 | 1293 | |
e52c0f96 | 1294 | /* On i350, i354, i210, and i211, loopback VLAN packets |
5536d210 | 1295 | * have the tag byte-swapped. |
b980ac18 | 1296 | */ |
5536d210 AD |
1297 | if (adapter->hw.mac.type >= e1000_i350) |
1298 | set_bit(IGB_RING_FLAG_RX_LB_VLAN_BSWAP, &ring->flags); | |
047e0030 | 1299 | |
5536d210 AD |
1300 | /* apply Rx specific ring traits */ |
1301 | ring->count = adapter->rx_ring_count; | |
1302 | ring->queue_index = rxr_idx; | |
1303 | ||
827da44c JS |
1304 | u64_stats_init(&ring->rx_syncp); |
1305 | ||
5536d210 AD |
1306 | /* assign ring to adapter */ |
1307 | adapter->rx_ring[rxr_idx] = ring; | |
1308 | } | |
1309 | ||
1310 | return 0; | |
047e0030 AD |
1311 | } |
1312 | ||
5536d210 | 1313 | |
047e0030 | 1314 | /** |
b980ac18 JK |
1315 | * igb_alloc_q_vectors - Allocate memory for interrupt vectors |
1316 | * @adapter: board private structure to initialize | |
047e0030 | 1317 | * |
b980ac18 JK |
1318 | * We allocate one q_vector per queue interrupt. If allocation fails we |
1319 | * return -ENOMEM. | |
047e0030 | 1320 | **/ |
5536d210 | 1321 | static int igb_alloc_q_vectors(struct igb_adapter *adapter) |
047e0030 | 1322 | { |
5536d210 AD |
1323 | int q_vectors = adapter->num_q_vectors; |
1324 | int rxr_remaining = adapter->num_rx_queues; | |
1325 | int txr_remaining = adapter->num_tx_queues; | |
1326 | int rxr_idx = 0, txr_idx = 0, v_idx = 0; | |
1327 | int err; | |
047e0030 | 1328 | |
5536d210 AD |
1329 | if (q_vectors >= (rxr_remaining + txr_remaining)) { |
1330 | for (; rxr_remaining; v_idx++) { | |
1331 | err = igb_alloc_q_vector(adapter, q_vectors, v_idx, | |
1332 | 0, 0, 1, rxr_idx); | |
047e0030 | 1333 | |
5536d210 AD |
1334 | if (err) |
1335 | goto err_out; | |
1336 | ||
1337 | /* update counts and index */ | |
1338 | rxr_remaining--; | |
1339 | rxr_idx++; | |
047e0030 | 1340 | } |
047e0030 | 1341 | } |
5536d210 AD |
1342 | |
1343 | for (; v_idx < q_vectors; v_idx++) { | |
1344 | int rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - v_idx); | |
1345 | int tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - v_idx); | |
9005df38 | 1346 | |
5536d210 AD |
1347 | err = igb_alloc_q_vector(adapter, q_vectors, v_idx, |
1348 | tqpv, txr_idx, rqpv, rxr_idx); | |
1349 | ||
1350 | if (err) | |
1351 | goto err_out; | |
1352 | ||
1353 | /* update counts and index */ | |
1354 | rxr_remaining -= rqpv; | |
1355 | txr_remaining -= tqpv; | |
1356 | rxr_idx++; | |
1357 | txr_idx++; | |
1358 | } | |
1359 | ||
047e0030 | 1360 | return 0; |
5536d210 AD |
1361 | |
1362 | err_out: | |
1363 | adapter->num_tx_queues = 0; | |
1364 | adapter->num_rx_queues = 0; | |
1365 | adapter->num_q_vectors = 0; | |
1366 | ||
1367 | while (v_idx--) | |
1368 | igb_free_q_vector(adapter, v_idx); | |
1369 | ||
1370 | return -ENOMEM; | |
047e0030 AD |
1371 | } |
1372 | ||
1373 | /** | |
b980ac18 JK |
1374 | * igb_init_interrupt_scheme - initialize interrupts, allocate queues/vectors |
1375 | * @adapter: board private structure to initialize | |
1376 | * @msix: boolean value of MSIX capability | |
047e0030 | 1377 | * |
b980ac18 | 1378 | * This function initializes the interrupts and allocates all of the queues. |
047e0030 | 1379 | **/ |
53c7d064 | 1380 | static int igb_init_interrupt_scheme(struct igb_adapter *adapter, bool msix) |
047e0030 AD |
1381 | { |
1382 | struct pci_dev *pdev = adapter->pdev; | |
1383 | int err; | |
1384 | ||
53c7d064 | 1385 | igb_set_interrupt_capability(adapter, msix); |
047e0030 AD |
1386 | |
1387 | err = igb_alloc_q_vectors(adapter); | |
1388 | if (err) { | |
1389 | dev_err(&pdev->dev, "Unable to allocate memory for vectors\n"); | |
1390 | goto err_alloc_q_vectors; | |
1391 | } | |
1392 | ||
5536d210 | 1393 | igb_cache_ring_register(adapter); |
047e0030 AD |
1394 | |
1395 | return 0; | |
5536d210 | 1396 | |
047e0030 AD |
1397 | err_alloc_q_vectors: |
1398 | igb_reset_interrupt_capability(adapter); | |
1399 | return err; | |
1400 | } | |
1401 | ||
9d5c8243 | 1402 | /** |
b980ac18 JK |
1403 | * igb_request_irq - initialize interrupts |
1404 | * @adapter: board private structure to initialize | |
9d5c8243 | 1405 | * |
b980ac18 JK |
1406 | * Attempts to configure interrupts using the best available |
1407 | * capabilities of the hardware and kernel. | |
9d5c8243 AK |
1408 | **/ |
1409 | static int igb_request_irq(struct igb_adapter *adapter) | |
1410 | { | |
1411 | struct net_device *netdev = adapter->netdev; | |
047e0030 | 1412 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
1413 | int err = 0; |
1414 | ||
cd14ef54 | 1415 | if (adapter->flags & IGB_FLAG_HAS_MSIX) { |
9d5c8243 | 1416 | err = igb_request_msix(adapter); |
844290e5 | 1417 | if (!err) |
9d5c8243 | 1418 | goto request_done; |
9d5c8243 | 1419 | /* fall back to MSI */ |
5536d210 AD |
1420 | igb_free_all_tx_resources(adapter); |
1421 | igb_free_all_rx_resources(adapter); | |
53c7d064 | 1422 | |
047e0030 | 1423 | igb_clear_interrupt_scheme(adapter); |
53c7d064 SA |
1424 | err = igb_init_interrupt_scheme(adapter, false); |
1425 | if (err) | |
047e0030 | 1426 | goto request_done; |
53c7d064 | 1427 | |
047e0030 AD |
1428 | igb_setup_all_tx_resources(adapter); |
1429 | igb_setup_all_rx_resources(adapter); | |
53c7d064 | 1430 | igb_configure(adapter); |
9d5c8243 | 1431 | } |
844290e5 | 1432 | |
c74d588e AD |
1433 | igb_assign_vector(adapter->q_vector[0], 0); |
1434 | ||
7dfc16fa | 1435 | if (adapter->flags & IGB_FLAG_HAS_MSI) { |
c74d588e | 1436 | err = request_irq(pdev->irq, igb_intr_msi, 0, |
047e0030 | 1437 | netdev->name, adapter); |
9d5c8243 AK |
1438 | if (!err) |
1439 | goto request_done; | |
047e0030 | 1440 | |
9d5c8243 AK |
1441 | /* fall back to legacy interrupts */ |
1442 | igb_reset_interrupt_capability(adapter); | |
7dfc16fa | 1443 | adapter->flags &= ~IGB_FLAG_HAS_MSI; |
9d5c8243 AK |
1444 | } |
1445 | ||
c74d588e | 1446 | err = request_irq(pdev->irq, igb_intr, IRQF_SHARED, |
047e0030 | 1447 | netdev->name, adapter); |
9d5c8243 | 1448 | |
6cb5e577 | 1449 | if (err) |
c74d588e | 1450 | dev_err(&pdev->dev, "Error %d getting interrupt\n", |
9d5c8243 | 1451 | err); |
9d5c8243 AK |
1452 | |
1453 | request_done: | |
1454 | return err; | |
1455 | } | |
1456 | ||
1457 | static void igb_free_irq(struct igb_adapter *adapter) | |
1458 | { | |
cd14ef54 | 1459 | if (adapter->flags & IGB_FLAG_HAS_MSIX) { |
9d5c8243 AK |
1460 | int vector = 0, i; |
1461 | ||
047e0030 | 1462 | free_irq(adapter->msix_entries[vector++].vector, adapter); |
9d5c8243 | 1463 | |
0d1ae7f4 | 1464 | for (i = 0; i < adapter->num_q_vectors; i++) |
047e0030 | 1465 | free_irq(adapter->msix_entries[vector++].vector, |
0d1ae7f4 | 1466 | adapter->q_vector[i]); |
047e0030 AD |
1467 | } else { |
1468 | free_irq(adapter->pdev->irq, adapter); | |
9d5c8243 | 1469 | } |
9d5c8243 AK |
1470 | } |
1471 | ||
1472 | /** | |
b980ac18 JK |
1473 | * igb_irq_disable - Mask off interrupt generation on the NIC |
1474 | * @adapter: board private structure | |
9d5c8243 AK |
1475 | **/ |
1476 | static void igb_irq_disable(struct igb_adapter *adapter) | |
1477 | { | |
1478 | struct e1000_hw *hw = &adapter->hw; | |
1479 | ||
b980ac18 | 1480 | /* we need to be careful when disabling interrupts. The VFs are also |
25568a53 AD |
1481 | * mapped into these registers and so clearing the bits can cause |
1482 | * issues on the VF drivers so we only need to clear what we set | |
1483 | */ | |
cd14ef54 | 1484 | if (adapter->flags & IGB_FLAG_HAS_MSIX) { |
2dfd1212 | 1485 | u32 regval = rd32(E1000_EIAM); |
9005df38 | 1486 | |
2dfd1212 AD |
1487 | wr32(E1000_EIAM, regval & ~adapter->eims_enable_mask); |
1488 | wr32(E1000_EIMC, adapter->eims_enable_mask); | |
1489 | regval = rd32(E1000_EIAC); | |
1490 | wr32(E1000_EIAC, regval & ~adapter->eims_enable_mask); | |
9d5c8243 | 1491 | } |
844290e5 PW |
1492 | |
1493 | wr32(E1000_IAM, 0); | |
9d5c8243 AK |
1494 | wr32(E1000_IMC, ~0); |
1495 | wrfl(); | |
cd14ef54 | 1496 | if (adapter->flags & IGB_FLAG_HAS_MSIX) { |
81a61859 | 1497 | int i; |
9005df38 | 1498 | |
81a61859 ET |
1499 | for (i = 0; i < adapter->num_q_vectors; i++) |
1500 | synchronize_irq(adapter->msix_entries[i].vector); | |
1501 | } else { | |
1502 | synchronize_irq(adapter->pdev->irq); | |
1503 | } | |
9d5c8243 AK |
1504 | } |
1505 | ||
1506 | /** | |
b980ac18 JK |
1507 | * igb_irq_enable - Enable default interrupt generation settings |
1508 | * @adapter: board private structure | |
9d5c8243 AK |
1509 | **/ |
1510 | static void igb_irq_enable(struct igb_adapter *adapter) | |
1511 | { | |
1512 | struct e1000_hw *hw = &adapter->hw; | |
1513 | ||
cd14ef54 | 1514 | if (adapter->flags & IGB_FLAG_HAS_MSIX) { |
06218a8d | 1515 | u32 ims = E1000_IMS_LSC | E1000_IMS_DOUTSYNC | E1000_IMS_DRSTA; |
2dfd1212 | 1516 | u32 regval = rd32(E1000_EIAC); |
9005df38 | 1517 | |
2dfd1212 AD |
1518 | wr32(E1000_EIAC, regval | adapter->eims_enable_mask); |
1519 | regval = rd32(E1000_EIAM); | |
1520 | wr32(E1000_EIAM, regval | adapter->eims_enable_mask); | |
844290e5 | 1521 | wr32(E1000_EIMS, adapter->eims_enable_mask); |
25568a53 | 1522 | if (adapter->vfs_allocated_count) { |
4ae196df | 1523 | wr32(E1000_MBVFIMR, 0xFF); |
25568a53 AD |
1524 | ims |= E1000_IMS_VMMB; |
1525 | } | |
1526 | wr32(E1000_IMS, ims); | |
844290e5 | 1527 | } else { |
55cac248 AD |
1528 | wr32(E1000_IMS, IMS_ENABLE_MASK | |
1529 | E1000_IMS_DRSTA); | |
1530 | wr32(E1000_IAM, IMS_ENABLE_MASK | | |
1531 | E1000_IMS_DRSTA); | |
844290e5 | 1532 | } |
9d5c8243 AK |
1533 | } |
1534 | ||
1535 | static void igb_update_mng_vlan(struct igb_adapter *adapter) | |
1536 | { | |
51466239 | 1537 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 AK |
1538 | u16 vid = adapter->hw.mng_cookie.vlan_id; |
1539 | u16 old_vid = adapter->mng_vlan_id; | |
51466239 AD |
1540 | |
1541 | if (hw->mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { | |
1542 | /* add VID to filter table */ | |
1543 | igb_vfta_set(hw, vid, true); | |
1544 | adapter->mng_vlan_id = vid; | |
1545 | } else { | |
1546 | adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; | |
1547 | } | |
1548 | ||
1549 | if ((old_vid != (u16)IGB_MNG_VLAN_NONE) && | |
1550 | (vid != old_vid) && | |
b2cb09b1 | 1551 | !test_bit(old_vid, adapter->active_vlans)) { |
51466239 AD |
1552 | /* remove VID from filter table */ |
1553 | igb_vfta_set(hw, old_vid, false); | |
9d5c8243 AK |
1554 | } |
1555 | } | |
1556 | ||
1557 | /** | |
b980ac18 JK |
1558 | * igb_release_hw_control - release control of the h/w to f/w |
1559 | * @adapter: address of board private structure | |
9d5c8243 | 1560 | * |
b980ac18 JK |
1561 | * igb_release_hw_control resets CTRL_EXT:DRV_LOAD bit. |
1562 | * For ASF and Pass Through versions of f/w this means that the | |
1563 | * driver is no longer loaded. | |
9d5c8243 AK |
1564 | **/ |
1565 | static void igb_release_hw_control(struct igb_adapter *adapter) | |
1566 | { | |
1567 | struct e1000_hw *hw = &adapter->hw; | |
1568 | u32 ctrl_ext; | |
1569 | ||
1570 | /* Let firmware take over control of h/w */ | |
1571 | ctrl_ext = rd32(E1000_CTRL_EXT); | |
1572 | wr32(E1000_CTRL_EXT, | |
1573 | ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); | |
1574 | } | |
1575 | ||
9d5c8243 | 1576 | /** |
b980ac18 JK |
1577 | * igb_get_hw_control - get control of the h/w from f/w |
1578 | * @adapter: address of board private structure | |
9d5c8243 | 1579 | * |
b980ac18 JK |
1580 | * igb_get_hw_control sets CTRL_EXT:DRV_LOAD bit. |
1581 | * For ASF and Pass Through versions of f/w this means that | |
1582 | * the driver is loaded. | |
9d5c8243 AK |
1583 | **/ |
1584 | static void igb_get_hw_control(struct igb_adapter *adapter) | |
1585 | { | |
1586 | struct e1000_hw *hw = &adapter->hw; | |
1587 | u32 ctrl_ext; | |
1588 | ||
1589 | /* Let firmware know the driver has taken over */ | |
1590 | ctrl_ext = rd32(E1000_CTRL_EXT); | |
1591 | wr32(E1000_CTRL_EXT, | |
1592 | ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); | |
1593 | } | |
1594 | ||
9d5c8243 | 1595 | /** |
b980ac18 JK |
1596 | * igb_configure - configure the hardware for RX and TX |
1597 | * @adapter: private board structure | |
9d5c8243 AK |
1598 | **/ |
1599 | static void igb_configure(struct igb_adapter *adapter) | |
1600 | { | |
1601 | struct net_device *netdev = adapter->netdev; | |
1602 | int i; | |
1603 | ||
1604 | igb_get_hw_control(adapter); | |
ff41f8dc | 1605 | igb_set_rx_mode(netdev); |
9d5c8243 AK |
1606 | |
1607 | igb_restore_vlan(adapter); | |
9d5c8243 | 1608 | |
85b430b4 | 1609 | igb_setup_tctl(adapter); |
06cf2666 | 1610 | igb_setup_mrqc(adapter); |
9d5c8243 | 1611 | igb_setup_rctl(adapter); |
85b430b4 AD |
1612 | |
1613 | igb_configure_tx(adapter); | |
9d5c8243 | 1614 | igb_configure_rx(adapter); |
662d7205 AD |
1615 | |
1616 | igb_rx_fifo_flush_82575(&adapter->hw); | |
1617 | ||
c493ea45 | 1618 | /* call igb_desc_unused which always leaves |
9d5c8243 | 1619 | * at least 1 descriptor unused to make sure |
b980ac18 JK |
1620 | * next_to_use != next_to_clean |
1621 | */ | |
9d5c8243 | 1622 | for (i = 0; i < adapter->num_rx_queues; i++) { |
3025a446 | 1623 | struct igb_ring *ring = adapter->rx_ring[i]; |
cd392f5c | 1624 | igb_alloc_rx_buffers(ring, igb_desc_unused(ring)); |
9d5c8243 | 1625 | } |
9d5c8243 AK |
1626 | } |
1627 | ||
88a268c1 | 1628 | /** |
b980ac18 JK |
1629 | * igb_power_up_link - Power up the phy/serdes link |
1630 | * @adapter: address of board private structure | |
88a268c1 NN |
1631 | **/ |
1632 | void igb_power_up_link(struct igb_adapter *adapter) | |
1633 | { | |
76886596 AA |
1634 | igb_reset_phy(&adapter->hw); |
1635 | ||
88a268c1 NN |
1636 | if (adapter->hw.phy.media_type == e1000_media_type_copper) |
1637 | igb_power_up_phy_copper(&adapter->hw); | |
1638 | else | |
1639 | igb_power_up_serdes_link_82575(&adapter->hw); | |
aec653c4 TF |
1640 | |
1641 | igb_setup_link(&adapter->hw); | |
88a268c1 NN |
1642 | } |
1643 | ||
1644 | /** | |
b980ac18 JK |
1645 | * igb_power_down_link - Power down the phy/serdes link |
1646 | * @adapter: address of board private structure | |
88a268c1 NN |
1647 | */ |
1648 | static void igb_power_down_link(struct igb_adapter *adapter) | |
1649 | { | |
1650 | if (adapter->hw.phy.media_type == e1000_media_type_copper) | |
1651 | igb_power_down_phy_copper_82575(&adapter->hw); | |
1652 | else | |
1653 | igb_shutdown_serdes_link_82575(&adapter->hw); | |
1654 | } | |
9d5c8243 | 1655 | |
56cec249 CW |
1656 | /** |
1657 | * Detect and switch function for Media Auto Sense | |
1658 | * @adapter: address of the board private structure | |
1659 | **/ | |
1660 | static void igb_check_swap_media(struct igb_adapter *adapter) | |
1661 | { | |
1662 | struct e1000_hw *hw = &adapter->hw; | |
1663 | u32 ctrl_ext, connsw; | |
1664 | bool swap_now = false; | |
1665 | ||
1666 | ctrl_ext = rd32(E1000_CTRL_EXT); | |
1667 | connsw = rd32(E1000_CONNSW); | |
1668 | ||
1669 | /* need to live swap if current media is copper and we have fiber/serdes | |
1670 | * to go to. | |
1671 | */ | |
1672 | ||
1673 | if ((hw->phy.media_type == e1000_media_type_copper) && | |
1674 | (!(connsw & E1000_CONNSW_AUTOSENSE_EN))) { | |
1675 | swap_now = true; | |
1676 | } else if (!(connsw & E1000_CONNSW_SERDESD)) { | |
1677 | /* copper signal takes time to appear */ | |
1678 | if (adapter->copper_tries < 4) { | |
1679 | adapter->copper_tries++; | |
1680 | connsw |= E1000_CONNSW_AUTOSENSE_CONF; | |
1681 | wr32(E1000_CONNSW, connsw); | |
1682 | return; | |
1683 | } else { | |
1684 | adapter->copper_tries = 0; | |
1685 | if ((connsw & E1000_CONNSW_PHYSD) && | |
1686 | (!(connsw & E1000_CONNSW_PHY_PDN))) { | |
1687 | swap_now = true; | |
1688 | connsw &= ~E1000_CONNSW_AUTOSENSE_CONF; | |
1689 | wr32(E1000_CONNSW, connsw); | |
1690 | } | |
1691 | } | |
1692 | } | |
1693 | ||
1694 | if (!swap_now) | |
1695 | return; | |
1696 | ||
1697 | switch (hw->phy.media_type) { | |
1698 | case e1000_media_type_copper: | |
1699 | netdev_info(adapter->netdev, | |
1700 | "MAS: changing media to fiber/serdes\n"); | |
1701 | ctrl_ext |= | |
1702 | E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES; | |
1703 | adapter->flags |= IGB_FLAG_MEDIA_RESET; | |
1704 | adapter->copper_tries = 0; | |
1705 | break; | |
1706 | case e1000_media_type_internal_serdes: | |
1707 | case e1000_media_type_fiber: | |
1708 | netdev_info(adapter->netdev, | |
1709 | "MAS: changing media to copper\n"); | |
1710 | ctrl_ext &= | |
1711 | ~E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES; | |
1712 | adapter->flags |= IGB_FLAG_MEDIA_RESET; | |
1713 | break; | |
1714 | default: | |
1715 | /* shouldn't get here during regular operation */ | |
1716 | netdev_err(adapter->netdev, | |
1717 | "AMS: Invalid media type found, returning\n"); | |
1718 | break; | |
1719 | } | |
1720 | wr32(E1000_CTRL_EXT, ctrl_ext); | |
1721 | } | |
1722 | ||
9d5c8243 | 1723 | /** |
b980ac18 JK |
1724 | * igb_up - Open the interface and prepare it to handle traffic |
1725 | * @adapter: board private structure | |
9d5c8243 | 1726 | **/ |
9d5c8243 AK |
1727 | int igb_up(struct igb_adapter *adapter) |
1728 | { | |
1729 | struct e1000_hw *hw = &adapter->hw; | |
1730 | int i; | |
1731 | ||
1732 | /* hardware has been reset, we need to reload some things */ | |
1733 | igb_configure(adapter); | |
1734 | ||
1735 | clear_bit(__IGB_DOWN, &adapter->state); | |
1736 | ||
0d1ae7f4 AD |
1737 | for (i = 0; i < adapter->num_q_vectors; i++) |
1738 | napi_enable(&(adapter->q_vector[i]->napi)); | |
1739 | ||
cd14ef54 | 1740 | if (adapter->flags & IGB_FLAG_HAS_MSIX) |
9d5c8243 | 1741 | igb_configure_msix(adapter); |
feeb2721 AD |
1742 | else |
1743 | igb_assign_vector(adapter->q_vector[0], 0); | |
9d5c8243 AK |
1744 | |
1745 | /* Clear any pending interrupts. */ | |
1746 | rd32(E1000_ICR); | |
1747 | igb_irq_enable(adapter); | |
1748 | ||
d4960307 AD |
1749 | /* notify VFs that reset has been completed */ |
1750 | if (adapter->vfs_allocated_count) { | |
1751 | u32 reg_data = rd32(E1000_CTRL_EXT); | |
9005df38 | 1752 | |
d4960307 AD |
1753 | reg_data |= E1000_CTRL_EXT_PFRSTD; |
1754 | wr32(E1000_CTRL_EXT, reg_data); | |
1755 | } | |
1756 | ||
4cb9be7a JB |
1757 | netif_tx_start_all_queues(adapter->netdev); |
1758 | ||
25568a53 AD |
1759 | /* start the watchdog. */ |
1760 | hw->mac.get_link_status = 1; | |
1761 | schedule_work(&adapter->watchdog_task); | |
1762 | ||
f4c01e96 CW |
1763 | if ((adapter->flags & IGB_FLAG_EEE) && |
1764 | (!hw->dev_spec._82575.eee_disable)) | |
1765 | adapter->eee_advert = MDIO_EEE_100TX | MDIO_EEE_1000T; | |
1766 | ||
9d5c8243 AK |
1767 | return 0; |
1768 | } | |
1769 | ||
1770 | void igb_down(struct igb_adapter *adapter) | |
1771 | { | |
9d5c8243 | 1772 | struct net_device *netdev = adapter->netdev; |
330a6d6a | 1773 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 AK |
1774 | u32 tctl, rctl; |
1775 | int i; | |
1776 | ||
1777 | /* signal that we're down so the interrupt handler does not | |
b980ac18 JK |
1778 | * reschedule our watchdog timer |
1779 | */ | |
9d5c8243 AK |
1780 | set_bit(__IGB_DOWN, &adapter->state); |
1781 | ||
1782 | /* disable receives in the hardware */ | |
1783 | rctl = rd32(E1000_RCTL); | |
1784 | wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN); | |
1785 | /* flush and sleep below */ | |
1786 | ||
f28ea083 | 1787 | netif_carrier_off(netdev); |
fd2ea0a7 | 1788 | netif_tx_stop_all_queues(netdev); |
9d5c8243 AK |
1789 | |
1790 | /* disable transmits in the hardware */ | |
1791 | tctl = rd32(E1000_TCTL); | |
1792 | tctl &= ~E1000_TCTL_EN; | |
1793 | wr32(E1000_TCTL, tctl); | |
1794 | /* flush both disables and wait for them to finish */ | |
1795 | wrfl(); | |
0d451e79 | 1796 | usleep_range(10000, 11000); |
9d5c8243 | 1797 | |
41f149a2 CW |
1798 | igb_irq_disable(adapter); |
1799 | ||
aa9b8cc4 AA |
1800 | adapter->flags &= ~IGB_FLAG_NEED_LINK_UPDATE; |
1801 | ||
41f149a2 | 1802 | for (i = 0; i < adapter->num_q_vectors; i++) { |
17a402a0 CW |
1803 | if (adapter->q_vector[i]) { |
1804 | napi_synchronize(&adapter->q_vector[i]->napi); | |
1805 | napi_disable(&adapter->q_vector[i]->napi); | |
1806 | } | |
41f149a2 | 1807 | } |
9d5c8243 | 1808 | |
9d5c8243 AK |
1809 | del_timer_sync(&adapter->watchdog_timer); |
1810 | del_timer_sync(&adapter->phy_info_timer); | |
1811 | ||
04fe6358 | 1812 | /* record the stats before reset*/ |
12dcd86b ED |
1813 | spin_lock(&adapter->stats64_lock); |
1814 | igb_update_stats(adapter, &adapter->stats64); | |
1815 | spin_unlock(&adapter->stats64_lock); | |
04fe6358 | 1816 | |
9d5c8243 AK |
1817 | adapter->link_speed = 0; |
1818 | adapter->link_duplex = 0; | |
1819 | ||
3023682e JK |
1820 | if (!pci_channel_offline(adapter->pdev)) |
1821 | igb_reset(adapter); | |
9d5c8243 AK |
1822 | igb_clean_all_tx_rings(adapter); |
1823 | igb_clean_all_rx_rings(adapter); | |
7e0e99ef AD |
1824 | #ifdef CONFIG_IGB_DCA |
1825 | ||
1826 | /* since we reset the hardware DCA settings were cleared */ | |
1827 | igb_setup_dca(adapter); | |
1828 | #endif | |
9d5c8243 AK |
1829 | } |
1830 | ||
1831 | void igb_reinit_locked(struct igb_adapter *adapter) | |
1832 | { | |
1833 | WARN_ON(in_interrupt()); | |
1834 | while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) | |
0d451e79 | 1835 | usleep_range(1000, 2000); |
9d5c8243 AK |
1836 | igb_down(adapter); |
1837 | igb_up(adapter); | |
1838 | clear_bit(__IGB_RESETTING, &adapter->state); | |
1839 | } | |
1840 | ||
56cec249 CW |
1841 | /** igb_enable_mas - Media Autosense re-enable after swap |
1842 | * | |
1843 | * @adapter: adapter struct | |
1844 | **/ | |
8cfb879d | 1845 | static void igb_enable_mas(struct igb_adapter *adapter) |
56cec249 CW |
1846 | { |
1847 | struct e1000_hw *hw = &adapter->hw; | |
8cfb879d | 1848 | u32 connsw = rd32(E1000_CONNSW); |
56cec249 CW |
1849 | |
1850 | /* configure for SerDes media detect */ | |
8cfb879d TF |
1851 | if ((hw->phy.media_type == e1000_media_type_copper) && |
1852 | (!(connsw & E1000_CONNSW_SERDESD))) { | |
56cec249 CW |
1853 | connsw |= E1000_CONNSW_ENRGSRC; |
1854 | connsw |= E1000_CONNSW_AUTOSENSE_EN; | |
1855 | wr32(E1000_CONNSW, connsw); | |
1856 | wrfl(); | |
56cec249 | 1857 | } |
56cec249 CW |
1858 | } |
1859 | ||
9d5c8243 AK |
1860 | void igb_reset(struct igb_adapter *adapter) |
1861 | { | |
090b1795 | 1862 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 | 1863 | struct e1000_hw *hw = &adapter->hw; |
2d064c06 AD |
1864 | struct e1000_mac_info *mac = &hw->mac; |
1865 | struct e1000_fc_info *fc = &hw->fc; | |
d48507fe | 1866 | u32 pba = 0, tx_space, min_tx_space, min_rx_space, hwm; |
9d5c8243 AK |
1867 | |
1868 | /* Repartition Pba for greater than 9k mtu | |
1869 | * To take effect CTRL.RST is required. | |
1870 | */ | |
fa4dfae0 | 1871 | switch (mac->type) { |
d2ba2ed8 | 1872 | case e1000_i350: |
ceb5f13b | 1873 | case e1000_i354: |
55cac248 AD |
1874 | case e1000_82580: |
1875 | pba = rd32(E1000_RXPBS); | |
1876 | pba = igb_rxpbs_adjust_82580(pba); | |
1877 | break; | |
fa4dfae0 | 1878 | case e1000_82576: |
d249be54 AD |
1879 | pba = rd32(E1000_RXPBS); |
1880 | pba &= E1000_RXPBS_SIZE_MASK_82576; | |
fa4dfae0 AD |
1881 | break; |
1882 | case e1000_82575: | |
f96a8a0b CW |
1883 | case e1000_i210: |
1884 | case e1000_i211: | |
fa4dfae0 AD |
1885 | default: |
1886 | pba = E1000_PBA_34K; | |
1887 | break; | |
2d064c06 | 1888 | } |
9d5c8243 | 1889 | |
2d064c06 AD |
1890 | if ((adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) && |
1891 | (mac->type < e1000_82576)) { | |
9d5c8243 AK |
1892 | /* adjust PBA for jumbo frames */ |
1893 | wr32(E1000_PBA, pba); | |
1894 | ||
1895 | /* To maintain wire speed transmits, the Tx FIFO should be | |
1896 | * large enough to accommodate two full transmit packets, | |
1897 | * rounded up to the next 1KB and expressed in KB. Likewise, | |
1898 | * the Rx FIFO should be large enough to accommodate at least | |
1899 | * one full receive packet and is similarly rounded up and | |
b980ac18 JK |
1900 | * expressed in KB. |
1901 | */ | |
9d5c8243 AK |
1902 | pba = rd32(E1000_PBA); |
1903 | /* upper 16 bits has Tx packet buffer allocation size in KB */ | |
1904 | tx_space = pba >> 16; | |
1905 | /* lower 16 bits has Rx packet buffer allocation size in KB */ | |
1906 | pba &= 0xffff; | |
b980ac18 JK |
1907 | /* the Tx fifo also stores 16 bytes of information about the Tx |
1908 | * but don't include ethernet FCS because hardware appends it | |
1909 | */ | |
9d5c8243 | 1910 | min_tx_space = (adapter->max_frame_size + |
85e8d004 | 1911 | sizeof(union e1000_adv_tx_desc) - |
9d5c8243 AK |
1912 | ETH_FCS_LEN) * 2; |
1913 | min_tx_space = ALIGN(min_tx_space, 1024); | |
1914 | min_tx_space >>= 10; | |
1915 | /* software strips receive CRC, so leave room for it */ | |
1916 | min_rx_space = adapter->max_frame_size; | |
1917 | min_rx_space = ALIGN(min_rx_space, 1024); | |
1918 | min_rx_space >>= 10; | |
1919 | ||
1920 | /* If current Tx allocation is less than the min Tx FIFO size, | |
1921 | * and the min Tx FIFO size is less than the current Rx FIFO | |
b980ac18 JK |
1922 | * allocation, take space away from current Rx allocation |
1923 | */ | |
9d5c8243 AK |
1924 | if (tx_space < min_tx_space && |
1925 | ((min_tx_space - tx_space) < pba)) { | |
1926 | pba = pba - (min_tx_space - tx_space); | |
1927 | ||
b980ac18 JK |
1928 | /* if short on Rx space, Rx wins and must trump Tx |
1929 | * adjustment | |
1930 | */ | |
9d5c8243 AK |
1931 | if (pba < min_rx_space) |
1932 | pba = min_rx_space; | |
1933 | } | |
2d064c06 | 1934 | wr32(E1000_PBA, pba); |
9d5c8243 | 1935 | } |
9d5c8243 AK |
1936 | |
1937 | /* flow control settings */ | |
1938 | /* The high water mark must be low enough to fit one full frame | |
1939 | * (or the size used for early receive) above it in the Rx FIFO. | |
1940 | * Set it to the lower of: | |
1941 | * - 90% of the Rx FIFO size, or | |
b980ac18 JK |
1942 | * - the full Rx FIFO size minus one full frame |
1943 | */ | |
9d5c8243 | 1944 | hwm = min(((pba << 10) * 9 / 10), |
2d064c06 | 1945 | ((pba << 10) - 2 * adapter->max_frame_size)); |
9d5c8243 | 1946 | |
d48507fe | 1947 | fc->high_water = hwm & 0xFFFFFFF0; /* 16-byte granularity */ |
d405ea3e | 1948 | fc->low_water = fc->high_water - 16; |
9d5c8243 AK |
1949 | fc->pause_time = 0xFFFF; |
1950 | fc->send_xon = 1; | |
0cce119a | 1951 | fc->current_mode = fc->requested_mode; |
9d5c8243 | 1952 | |
4ae196df AD |
1953 | /* disable receive for all VFs and wait one second */ |
1954 | if (adapter->vfs_allocated_count) { | |
1955 | int i; | |
9005df38 | 1956 | |
4ae196df | 1957 | for (i = 0 ; i < adapter->vfs_allocated_count; i++) |
8fa7e0f7 | 1958 | adapter->vf_data[i].flags &= IGB_VF_FLAG_PF_SET_MAC; |
4ae196df AD |
1959 | |
1960 | /* ping all the active vfs to let them know we are going down */ | |
f2ca0dbe | 1961 | igb_ping_all_vfs(adapter); |
4ae196df AD |
1962 | |
1963 | /* disable transmits and receives */ | |
1964 | wr32(E1000_VFRE, 0); | |
1965 | wr32(E1000_VFTE, 0); | |
1966 | } | |
1967 | ||
9d5c8243 | 1968 | /* Allow time for pending master requests to run */ |
330a6d6a | 1969 | hw->mac.ops.reset_hw(hw); |
9d5c8243 AK |
1970 | wr32(E1000_WUC, 0); |
1971 | ||
56cec249 CW |
1972 | if (adapter->flags & IGB_FLAG_MEDIA_RESET) { |
1973 | /* need to resetup here after media swap */ | |
1974 | adapter->ei.get_invariants(hw); | |
1975 | adapter->flags &= ~IGB_FLAG_MEDIA_RESET; | |
1976 | } | |
8cfb879d TF |
1977 | if ((mac->type == e1000_82575) && |
1978 | (adapter->flags & IGB_FLAG_MAS_ENABLE)) { | |
1979 | igb_enable_mas(adapter); | |
56cec249 | 1980 | } |
330a6d6a | 1981 | if (hw->mac.ops.init_hw(hw)) |
090b1795 | 1982 | dev_err(&pdev->dev, "Hardware Error\n"); |
831ec0b4 | 1983 | |
b980ac18 | 1984 | /* Flow control settings reset on hardware reset, so guarantee flow |
a27416bb MV |
1985 | * control is off when forcing speed. |
1986 | */ | |
1987 | if (!hw->mac.autoneg) | |
1988 | igb_force_mac_fc(hw); | |
1989 | ||
b6e0c419 | 1990 | igb_init_dmac(adapter, pba); |
e428893b CW |
1991 | #ifdef CONFIG_IGB_HWMON |
1992 | /* Re-initialize the thermal sensor on i350 devices. */ | |
1993 | if (!test_bit(__IGB_DOWN, &adapter->state)) { | |
1994 | if (mac->type == e1000_i350 && hw->bus.func == 0) { | |
1995 | /* If present, re-initialize the external thermal sensor | |
1996 | * interface. | |
1997 | */ | |
1998 | if (adapter->ets) | |
1999 | mac->ops.init_thermal_sensor_thresh(hw); | |
2000 | } | |
2001 | } | |
2002 | #endif | |
b936136d | 2003 | /* Re-establish EEE setting */ |
f4c01e96 CW |
2004 | if (hw->phy.media_type == e1000_media_type_copper) { |
2005 | switch (mac->type) { | |
2006 | case e1000_i350: | |
2007 | case e1000_i210: | |
2008 | case e1000_i211: | |
c4c112f1 | 2009 | igb_set_eee_i350(hw, true, true); |
f4c01e96 CW |
2010 | break; |
2011 | case e1000_i354: | |
c4c112f1 | 2012 | igb_set_eee_i354(hw, true, true); |
f4c01e96 CW |
2013 | break; |
2014 | default: | |
2015 | break; | |
2016 | } | |
2017 | } | |
88a268c1 NN |
2018 | if (!netif_running(adapter->netdev)) |
2019 | igb_power_down_link(adapter); | |
2020 | ||
9d5c8243 AK |
2021 | igb_update_mng_vlan(adapter); |
2022 | ||
2023 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ | |
2024 | wr32(E1000_VET, ETHERNET_IEEE_VLAN_TYPE); | |
2025 | ||
1f6e8178 MV |
2026 | /* Re-enable PTP, where applicable. */ |
2027 | igb_ptp_reset(adapter); | |
1f6e8178 | 2028 | |
330a6d6a | 2029 | igb_get_phy_info(hw); |
9d5c8243 AK |
2030 | } |
2031 | ||
c8f44aff MM |
2032 | static netdev_features_t igb_fix_features(struct net_device *netdev, |
2033 | netdev_features_t features) | |
b2cb09b1 | 2034 | { |
b980ac18 JK |
2035 | /* Since there is no support for separate Rx/Tx vlan accel |
2036 | * enable/disable make sure Tx flag is always in same state as Rx. | |
b2cb09b1 | 2037 | */ |
f646968f PM |
2038 | if (features & NETIF_F_HW_VLAN_CTAG_RX) |
2039 | features |= NETIF_F_HW_VLAN_CTAG_TX; | |
b2cb09b1 | 2040 | else |
f646968f | 2041 | features &= ~NETIF_F_HW_VLAN_CTAG_TX; |
b2cb09b1 JP |
2042 | |
2043 | return features; | |
2044 | } | |
2045 | ||
c8f44aff MM |
2046 | static int igb_set_features(struct net_device *netdev, |
2047 | netdev_features_t features) | |
ac52caa3 | 2048 | { |
c8f44aff | 2049 | netdev_features_t changed = netdev->features ^ features; |
89eaefb6 | 2050 | struct igb_adapter *adapter = netdev_priv(netdev); |
ac52caa3 | 2051 | |
f646968f | 2052 | if (changed & NETIF_F_HW_VLAN_CTAG_RX) |
b2cb09b1 JP |
2053 | igb_vlan_mode(netdev, features); |
2054 | ||
89eaefb6 BG |
2055 | if (!(changed & NETIF_F_RXALL)) |
2056 | return 0; | |
2057 | ||
2058 | netdev->features = features; | |
2059 | ||
2060 | if (netif_running(netdev)) | |
2061 | igb_reinit_locked(adapter); | |
2062 | else | |
2063 | igb_reset(adapter); | |
2064 | ||
ac52caa3 MM |
2065 | return 0; |
2066 | } | |
2067 | ||
2e5c6922 | 2068 | static const struct net_device_ops igb_netdev_ops = { |
559e9c49 | 2069 | .ndo_open = igb_open, |
2e5c6922 | 2070 | .ndo_stop = igb_close, |
cd392f5c | 2071 | .ndo_start_xmit = igb_xmit_frame, |
12dcd86b | 2072 | .ndo_get_stats64 = igb_get_stats64, |
ff41f8dc | 2073 | .ndo_set_rx_mode = igb_set_rx_mode, |
2e5c6922 SH |
2074 | .ndo_set_mac_address = igb_set_mac, |
2075 | .ndo_change_mtu = igb_change_mtu, | |
2076 | .ndo_do_ioctl = igb_ioctl, | |
2077 | .ndo_tx_timeout = igb_tx_timeout, | |
2078 | .ndo_validate_addr = eth_validate_addr, | |
2e5c6922 SH |
2079 | .ndo_vlan_rx_add_vid = igb_vlan_rx_add_vid, |
2080 | .ndo_vlan_rx_kill_vid = igb_vlan_rx_kill_vid, | |
8151d294 WM |
2081 | .ndo_set_vf_mac = igb_ndo_set_vf_mac, |
2082 | .ndo_set_vf_vlan = igb_ndo_set_vf_vlan, | |
ed616689 | 2083 | .ndo_set_vf_rate = igb_ndo_set_vf_bw, |
70ea4783 | 2084 | .ndo_set_vf_spoofchk = igb_ndo_set_vf_spoofchk, |
8151d294 | 2085 | .ndo_get_vf_config = igb_ndo_get_vf_config, |
2e5c6922 SH |
2086 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2087 | .ndo_poll_controller = igb_netpoll, | |
2088 | #endif | |
b2cb09b1 JP |
2089 | .ndo_fix_features = igb_fix_features, |
2090 | .ndo_set_features = igb_set_features, | |
1abbc98a | 2091 | .ndo_features_check = passthru_features_check, |
2e5c6922 SH |
2092 | }; |
2093 | ||
d67974f0 CW |
2094 | /** |
2095 | * igb_set_fw_version - Configure version string for ethtool | |
2096 | * @adapter: adapter struct | |
d67974f0 CW |
2097 | **/ |
2098 | void igb_set_fw_version(struct igb_adapter *adapter) | |
2099 | { | |
2100 | struct e1000_hw *hw = &adapter->hw; | |
0b1a6f2e CW |
2101 | struct e1000_fw_version fw; |
2102 | ||
2103 | igb_get_fw_version(hw, &fw); | |
2104 | ||
2105 | switch (hw->mac.type) { | |
7dc98a62 | 2106 | case e1000_i210: |
0b1a6f2e | 2107 | case e1000_i211: |
7dc98a62 CW |
2108 | if (!(igb_get_flash_presence_i210(hw))) { |
2109 | snprintf(adapter->fw_version, | |
2110 | sizeof(adapter->fw_version), | |
2111 | "%2d.%2d-%d", | |
2112 | fw.invm_major, fw.invm_minor, | |
2113 | fw.invm_img_type); | |
2114 | break; | |
2115 | } | |
2116 | /* fall through */ | |
0b1a6f2e CW |
2117 | default: |
2118 | /* if option is rom valid, display its version too */ | |
2119 | if (fw.or_valid) { | |
2120 | snprintf(adapter->fw_version, | |
2121 | sizeof(adapter->fw_version), | |
2122 | "%d.%d, 0x%08x, %d.%d.%d", | |
2123 | fw.eep_major, fw.eep_minor, fw.etrack_id, | |
2124 | fw.or_major, fw.or_build, fw.or_patch); | |
2125 | /* no option rom */ | |
7dc98a62 | 2126 | } else if (fw.etrack_id != 0X0000) { |
0b1a6f2e | 2127 | snprintf(adapter->fw_version, |
7dc98a62 CW |
2128 | sizeof(adapter->fw_version), |
2129 | "%d.%d, 0x%08x", | |
2130 | fw.eep_major, fw.eep_minor, fw.etrack_id); | |
2131 | } else { | |
2132 | snprintf(adapter->fw_version, | |
2133 | sizeof(adapter->fw_version), | |
2134 | "%d.%d.%d", | |
2135 | fw.eep_major, fw.eep_minor, fw.eep_build); | |
0b1a6f2e CW |
2136 | } |
2137 | break; | |
d67974f0 | 2138 | } |
d67974f0 CW |
2139 | } |
2140 | ||
56cec249 CW |
2141 | /** |
2142 | * igb_init_mas - init Media Autosense feature if enabled in the NVM | |
2143 | * | |
2144 | * @adapter: adapter struct | |
2145 | **/ | |
2146 | static void igb_init_mas(struct igb_adapter *adapter) | |
2147 | { | |
2148 | struct e1000_hw *hw = &adapter->hw; | |
2149 | u16 eeprom_data; | |
2150 | ||
2151 | hw->nvm.ops.read(hw, NVM_COMPAT, 1, &eeprom_data); | |
2152 | switch (hw->bus.func) { | |
2153 | case E1000_FUNC_0: | |
2154 | if (eeprom_data & IGB_MAS_ENABLE_0) { | |
2155 | adapter->flags |= IGB_FLAG_MAS_ENABLE; | |
2156 | netdev_info(adapter->netdev, | |
2157 | "MAS: Enabling Media Autosense for port %d\n", | |
2158 | hw->bus.func); | |
2159 | } | |
2160 | break; | |
2161 | case E1000_FUNC_1: | |
2162 | if (eeprom_data & IGB_MAS_ENABLE_1) { | |
2163 | adapter->flags |= IGB_FLAG_MAS_ENABLE; | |
2164 | netdev_info(adapter->netdev, | |
2165 | "MAS: Enabling Media Autosense for port %d\n", | |
2166 | hw->bus.func); | |
2167 | } | |
2168 | break; | |
2169 | case E1000_FUNC_2: | |
2170 | if (eeprom_data & IGB_MAS_ENABLE_2) { | |
2171 | adapter->flags |= IGB_FLAG_MAS_ENABLE; | |
2172 | netdev_info(adapter->netdev, | |
2173 | "MAS: Enabling Media Autosense for port %d\n", | |
2174 | hw->bus.func); | |
2175 | } | |
2176 | break; | |
2177 | case E1000_FUNC_3: | |
2178 | if (eeprom_data & IGB_MAS_ENABLE_3) { | |
2179 | adapter->flags |= IGB_FLAG_MAS_ENABLE; | |
2180 | netdev_info(adapter->netdev, | |
2181 | "MAS: Enabling Media Autosense for port %d\n", | |
2182 | hw->bus.func); | |
2183 | } | |
2184 | break; | |
2185 | default: | |
2186 | /* Shouldn't get here */ | |
2187 | netdev_err(adapter->netdev, | |
2188 | "MAS: Invalid port configuration, returning\n"); | |
2189 | break; | |
2190 | } | |
2191 | } | |
2192 | ||
b980ac18 JK |
2193 | /** |
2194 | * igb_init_i2c - Init I2C interface | |
441fc6fd | 2195 | * @adapter: pointer to adapter structure |
b980ac18 | 2196 | **/ |
441fc6fd CW |
2197 | static s32 igb_init_i2c(struct igb_adapter *adapter) |
2198 | { | |
23d87824 | 2199 | s32 status = 0; |
441fc6fd CW |
2200 | |
2201 | /* I2C interface supported on i350 devices */ | |
2202 | if (adapter->hw.mac.type != e1000_i350) | |
23d87824 | 2203 | return 0; |
441fc6fd CW |
2204 | |
2205 | /* Initialize the i2c bus which is controlled by the registers. | |
2206 | * This bus will use the i2c_algo_bit structue that implements | |
2207 | * the protocol through toggling of the 4 bits in the register. | |
2208 | */ | |
2209 | adapter->i2c_adap.owner = THIS_MODULE; | |
2210 | adapter->i2c_algo = igb_i2c_algo; | |
2211 | adapter->i2c_algo.data = adapter; | |
2212 | adapter->i2c_adap.algo_data = &adapter->i2c_algo; | |
2213 | adapter->i2c_adap.dev.parent = &adapter->pdev->dev; | |
2214 | strlcpy(adapter->i2c_adap.name, "igb BB", | |
2215 | sizeof(adapter->i2c_adap.name)); | |
2216 | status = i2c_bit_add_bus(&adapter->i2c_adap); | |
2217 | return status; | |
2218 | } | |
2219 | ||
9d5c8243 | 2220 | /** |
b980ac18 JK |
2221 | * igb_probe - Device Initialization Routine |
2222 | * @pdev: PCI device information struct | |
2223 | * @ent: entry in igb_pci_tbl | |
9d5c8243 | 2224 | * |
b980ac18 | 2225 | * Returns 0 on success, negative on failure |
9d5c8243 | 2226 | * |
b980ac18 JK |
2227 | * igb_probe initializes an adapter identified by a pci_dev structure. |
2228 | * The OS initialization, configuring of the adapter private structure, | |
2229 | * and a hardware reset occur. | |
9d5c8243 | 2230 | **/ |
1dd06ae8 | 2231 | static int igb_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
9d5c8243 AK |
2232 | { |
2233 | struct net_device *netdev; | |
2234 | struct igb_adapter *adapter; | |
2235 | struct e1000_hw *hw; | |
4337e993 | 2236 | u16 eeprom_data = 0; |
9835fd73 | 2237 | s32 ret_val; |
4337e993 | 2238 | static int global_quad_port_a; /* global quad port a indication */ |
9d5c8243 | 2239 | const struct e1000_info *ei = igb_info_tbl[ent->driver_data]; |
2d6a5e95 | 2240 | int err, pci_using_dac; |
9835fd73 | 2241 | u8 part_str[E1000_PBANUM_LENGTH]; |
9d5c8243 | 2242 | |
bded64a7 AG |
2243 | /* Catch broken hardware that put the wrong VF device ID in |
2244 | * the PCIe SR-IOV capability. | |
2245 | */ | |
2246 | if (pdev->is_virtfn) { | |
2247 | WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n", | |
f96a8a0b | 2248 | pci_name(pdev), pdev->vendor, pdev->device); |
bded64a7 AG |
2249 | return -EINVAL; |
2250 | } | |
2251 | ||
aed5dec3 | 2252 | err = pci_enable_device_mem(pdev); |
9d5c8243 AK |
2253 | if (err) |
2254 | return err; | |
2255 | ||
2256 | pci_using_dac = 0; | |
dc4ff9bb | 2257 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); |
9d5c8243 | 2258 | if (!err) { |
dc4ff9bb | 2259 | pci_using_dac = 1; |
9d5c8243 | 2260 | } else { |
dc4ff9bb | 2261 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
9d5c8243 | 2262 | if (err) { |
dc4ff9bb RK |
2263 | dev_err(&pdev->dev, |
2264 | "No usable DMA configuration, aborting\n"); | |
2265 | goto err_dma; | |
9d5c8243 AK |
2266 | } |
2267 | } | |
2268 | ||
aed5dec3 | 2269 | err = pci_request_selected_regions(pdev, pci_select_bars(pdev, |
b980ac18 JK |
2270 | IORESOURCE_MEM), |
2271 | igb_driver_name); | |
9d5c8243 AK |
2272 | if (err) |
2273 | goto err_pci_reg; | |
2274 | ||
19d5afd4 | 2275 | pci_enable_pcie_error_reporting(pdev); |
40a914fa | 2276 | |
9d5c8243 | 2277 | pci_set_master(pdev); |
c682fc23 | 2278 | pci_save_state(pdev); |
9d5c8243 AK |
2279 | |
2280 | err = -ENOMEM; | |
1bfaf07b | 2281 | netdev = alloc_etherdev_mq(sizeof(struct igb_adapter), |
1cc3bd87 | 2282 | IGB_MAX_TX_QUEUES); |
9d5c8243 AK |
2283 | if (!netdev) |
2284 | goto err_alloc_etherdev; | |
2285 | ||
2286 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2287 | ||
2288 | pci_set_drvdata(pdev, netdev); | |
2289 | adapter = netdev_priv(netdev); | |
2290 | adapter->netdev = netdev; | |
2291 | adapter->pdev = pdev; | |
2292 | hw = &adapter->hw; | |
2293 | hw->back = adapter; | |
b3f4d599 | 2294 | adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); |
9d5c8243 | 2295 | |
9d5c8243 | 2296 | err = -EIO; |
89dbefb2 | 2297 | hw->hw_addr = pci_iomap(pdev, 0, 0); |
28b0759c | 2298 | if (!hw->hw_addr) |
9d5c8243 AK |
2299 | goto err_ioremap; |
2300 | ||
2e5c6922 | 2301 | netdev->netdev_ops = &igb_netdev_ops; |
9d5c8243 | 2302 | igb_set_ethtool_ops(netdev); |
9d5c8243 | 2303 | netdev->watchdog_timeo = 5 * HZ; |
9d5c8243 AK |
2304 | |
2305 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); | |
2306 | ||
89dbefb2 AS |
2307 | netdev->mem_start = pci_resource_start(pdev, 0); |
2308 | netdev->mem_end = pci_resource_end(pdev, 0); | |
9d5c8243 | 2309 | |
9d5c8243 AK |
2310 | /* PCI config space info */ |
2311 | hw->vendor_id = pdev->vendor; | |
2312 | hw->device_id = pdev->device; | |
2313 | hw->revision_id = pdev->revision; | |
2314 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
2315 | hw->subsystem_device_id = pdev->subsystem_device; | |
2316 | ||
9d5c8243 AK |
2317 | /* Copy the default MAC, PHY and NVM function pointers */ |
2318 | memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); | |
2319 | memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); | |
2320 | memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); | |
2321 | /* Initialize skew-specific constants */ | |
2322 | err = ei->get_invariants(hw); | |
2323 | if (err) | |
450c87c8 | 2324 | goto err_sw_init; |
9d5c8243 | 2325 | |
450c87c8 | 2326 | /* setup the private structure */ |
9d5c8243 AK |
2327 | err = igb_sw_init(adapter); |
2328 | if (err) | |
2329 | goto err_sw_init; | |
2330 | ||
2331 | igb_get_bus_info_pcie(hw); | |
2332 | ||
2333 | hw->phy.autoneg_wait_to_complete = false; | |
9d5c8243 AK |
2334 | |
2335 | /* Copper options */ | |
2336 | if (hw->phy.media_type == e1000_media_type_copper) { | |
2337 | hw->phy.mdix = AUTO_ALL_MODES; | |
2338 | hw->phy.disable_polarity_correction = false; | |
2339 | hw->phy.ms_type = e1000_ms_hw_default; | |
2340 | } | |
2341 | ||
2342 | if (igb_check_reset_block(hw)) | |
2343 | dev_info(&pdev->dev, | |
2344 | "PHY reset is blocked due to SOL/IDER session.\n"); | |
2345 | ||
b980ac18 | 2346 | /* features is initialized to 0 in allocation, it might have bits |
077887c3 AD |
2347 | * set by igb_sw_init so we should use an or instead of an |
2348 | * assignment. | |
2349 | */ | |
2350 | netdev->features |= NETIF_F_SG | | |
2351 | NETIF_F_IP_CSUM | | |
2352 | NETIF_F_IPV6_CSUM | | |
2353 | NETIF_F_TSO | | |
2354 | NETIF_F_TSO6 | | |
2355 | NETIF_F_RXHASH | | |
2356 | NETIF_F_RXCSUM | | |
f646968f PM |
2357 | NETIF_F_HW_VLAN_CTAG_RX | |
2358 | NETIF_F_HW_VLAN_CTAG_TX; | |
077887c3 AD |
2359 | |
2360 | /* copy netdev features into list of user selectable features */ | |
2361 | netdev->hw_features |= netdev->features; | |
89eaefb6 | 2362 | netdev->hw_features |= NETIF_F_RXALL; |
077887c3 AD |
2363 | |
2364 | /* set this bit last since it cannot be part of hw_features */ | |
f646968f | 2365 | netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; |
077887c3 AD |
2366 | |
2367 | netdev->vlan_features |= NETIF_F_TSO | | |
2368 | NETIF_F_TSO6 | | |
2369 | NETIF_F_IP_CSUM | | |
2370 | NETIF_F_IPV6_CSUM | | |
2371 | NETIF_F_SG; | |
48f29ffc | 2372 | |
6b8f0922 BG |
2373 | netdev->priv_flags |= IFF_SUPP_NOFCS; |
2374 | ||
7b872a55 | 2375 | if (pci_using_dac) { |
9d5c8243 | 2376 | netdev->features |= NETIF_F_HIGHDMA; |
7b872a55 YZ |
2377 | netdev->vlan_features |= NETIF_F_HIGHDMA; |
2378 | } | |
9d5c8243 | 2379 | |
ac52caa3 MM |
2380 | if (hw->mac.type >= e1000_82576) { |
2381 | netdev->hw_features |= NETIF_F_SCTP_CSUM; | |
b9473560 | 2382 | netdev->features |= NETIF_F_SCTP_CSUM; |
ac52caa3 | 2383 | } |
b9473560 | 2384 | |
01789349 JP |
2385 | netdev->priv_flags |= IFF_UNICAST_FLT; |
2386 | ||
330a6d6a | 2387 | adapter->en_mng_pt = igb_enable_mng_pass_thru(hw); |
9d5c8243 AK |
2388 | |
2389 | /* before reading the NVM, reset the controller to put the device in a | |
b980ac18 JK |
2390 | * known good starting state |
2391 | */ | |
9d5c8243 AK |
2392 | hw->mac.ops.reset_hw(hw); |
2393 | ||
ef3a0092 CW |
2394 | /* make sure the NVM is good , i211/i210 parts can have special NVM |
2395 | * that doesn't contain a checksum | |
f96a8a0b | 2396 | */ |
ef3a0092 CW |
2397 | switch (hw->mac.type) { |
2398 | case e1000_i210: | |
2399 | case e1000_i211: | |
2400 | if (igb_get_flash_presence_i210(hw)) { | |
2401 | if (hw->nvm.ops.validate(hw) < 0) { | |
2402 | dev_err(&pdev->dev, | |
2403 | "The NVM Checksum Is Not Valid\n"); | |
2404 | err = -EIO; | |
2405 | goto err_eeprom; | |
2406 | } | |
2407 | } | |
2408 | break; | |
2409 | default: | |
f96a8a0b CW |
2410 | if (hw->nvm.ops.validate(hw) < 0) { |
2411 | dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n"); | |
2412 | err = -EIO; | |
2413 | goto err_eeprom; | |
2414 | } | |
ef3a0092 | 2415 | break; |
9d5c8243 AK |
2416 | } |
2417 | ||
2418 | /* copy the MAC address out of the NVM */ | |
2419 | if (hw->mac.ops.read_mac_addr(hw)) | |
2420 | dev_err(&pdev->dev, "NVM Read Error\n"); | |
2421 | ||
2422 | memcpy(netdev->dev_addr, hw->mac.addr, netdev->addr_len); | |
9d5c8243 | 2423 | |
aaeb6cdf | 2424 | if (!is_valid_ether_addr(netdev->dev_addr)) { |
9d5c8243 AK |
2425 | dev_err(&pdev->dev, "Invalid MAC Address\n"); |
2426 | err = -EIO; | |
2427 | goto err_eeprom; | |
2428 | } | |
2429 | ||
d67974f0 CW |
2430 | /* get firmware version for ethtool -i */ |
2431 | igb_set_fw_version(adapter); | |
2432 | ||
27dff8b2 TF |
2433 | /* configure RXPBSIZE and TXPBSIZE */ |
2434 | if (hw->mac.type == e1000_i210) { | |
2435 | wr32(E1000_RXPBS, I210_RXPBSIZE_DEFAULT); | |
2436 | wr32(E1000_TXPBS, I210_TXPBSIZE_DEFAULT); | |
2437 | } | |
2438 | ||
c061b18d | 2439 | setup_timer(&adapter->watchdog_timer, igb_watchdog, |
b980ac18 | 2440 | (unsigned long) adapter); |
c061b18d | 2441 | setup_timer(&adapter->phy_info_timer, igb_update_phy_info, |
b980ac18 | 2442 | (unsigned long) adapter); |
9d5c8243 AK |
2443 | |
2444 | INIT_WORK(&adapter->reset_task, igb_reset_task); | |
2445 | INIT_WORK(&adapter->watchdog_task, igb_watchdog_task); | |
2446 | ||
450c87c8 | 2447 | /* Initialize link properties that are user-changeable */ |
9d5c8243 AK |
2448 | adapter->fc_autoneg = true; |
2449 | hw->mac.autoneg = true; | |
2450 | hw->phy.autoneg_advertised = 0x2f; | |
2451 | ||
0cce119a AD |
2452 | hw->fc.requested_mode = e1000_fc_default; |
2453 | hw->fc.current_mode = e1000_fc_default; | |
9d5c8243 | 2454 | |
9d5c8243 AK |
2455 | igb_validate_mdi_setting(hw); |
2456 | ||
63d4a8f9 | 2457 | /* By default, support wake on port A */ |
a2cf8b6c | 2458 | if (hw->bus.func == 0) |
63d4a8f9 MV |
2459 | adapter->flags |= IGB_FLAG_WOL_SUPPORTED; |
2460 | ||
2461 | /* Check the NVM for wake support on non-port A ports */ | |
2462 | if (hw->mac.type >= e1000_82580) | |
55cac248 | 2463 | hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A + |
b980ac18 JK |
2464 | NVM_82580_LAN_FUNC_OFFSET(hw->bus.func), 1, |
2465 | &eeprom_data); | |
a2cf8b6c AD |
2466 | else if (hw->bus.func == 1) |
2467 | hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); | |
9d5c8243 | 2468 | |
63d4a8f9 MV |
2469 | if (eeprom_data & IGB_EEPROM_APME) |
2470 | adapter->flags |= IGB_FLAG_WOL_SUPPORTED; | |
9d5c8243 AK |
2471 | |
2472 | /* now that we have the eeprom settings, apply the special cases where | |
2473 | * the eeprom may be wrong or the board simply won't support wake on | |
b980ac18 JK |
2474 | * lan on a particular port |
2475 | */ | |
9d5c8243 AK |
2476 | switch (pdev->device) { |
2477 | case E1000_DEV_ID_82575GB_QUAD_COPPER: | |
63d4a8f9 | 2478 | adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED; |
9d5c8243 AK |
2479 | break; |
2480 | case E1000_DEV_ID_82575EB_FIBER_SERDES: | |
2d064c06 AD |
2481 | case E1000_DEV_ID_82576_FIBER: |
2482 | case E1000_DEV_ID_82576_SERDES: | |
9d5c8243 | 2483 | /* Wake events only supported on port A for dual fiber |
b980ac18 JK |
2484 | * regardless of eeprom setting |
2485 | */ | |
9d5c8243 | 2486 | if (rd32(E1000_STATUS) & E1000_STATUS_FUNC_1) |
63d4a8f9 | 2487 | adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED; |
9d5c8243 | 2488 | break; |
c8ea5ea9 | 2489 | case E1000_DEV_ID_82576_QUAD_COPPER: |
d5aa2252 | 2490 | case E1000_DEV_ID_82576_QUAD_COPPER_ET2: |
c8ea5ea9 AD |
2491 | /* if quad port adapter, disable WoL on all but port A */ |
2492 | if (global_quad_port_a != 0) | |
63d4a8f9 | 2493 | adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED; |
c8ea5ea9 AD |
2494 | else |
2495 | adapter->flags |= IGB_FLAG_QUAD_PORT_A; | |
2496 | /* Reset for multiple quad port adapters */ | |
2497 | if (++global_quad_port_a == 4) | |
2498 | global_quad_port_a = 0; | |
2499 | break; | |
63d4a8f9 MV |
2500 | default: |
2501 | /* If the device can't wake, don't set software support */ | |
2502 | if (!device_can_wakeup(&adapter->pdev->dev)) | |
2503 | adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED; | |
9d5c8243 AK |
2504 | } |
2505 | ||
2506 | /* initialize the wol settings based on the eeprom settings */ | |
63d4a8f9 MV |
2507 | if (adapter->flags & IGB_FLAG_WOL_SUPPORTED) |
2508 | adapter->wol |= E1000_WUFC_MAG; | |
2509 | ||
2510 | /* Some vendors want WoL disabled by default, but still supported */ | |
2511 | if ((hw->mac.type == e1000_i350) && | |
2512 | (pdev->subsystem_vendor == PCI_VENDOR_ID_HP)) { | |
2513 | adapter->flags |= IGB_FLAG_WOL_SUPPORTED; | |
2514 | adapter->wol = 0; | |
2515 | } | |
2516 | ||
2517 | device_set_wakeup_enable(&adapter->pdev->dev, | |
2518 | adapter->flags & IGB_FLAG_WOL_SUPPORTED); | |
9d5c8243 AK |
2519 | |
2520 | /* reset the hardware with the new settings */ | |
2521 | igb_reset(adapter); | |
2522 | ||
441fc6fd CW |
2523 | /* Init the I2C interface */ |
2524 | err = igb_init_i2c(adapter); | |
2525 | if (err) { | |
2526 | dev_err(&pdev->dev, "failed to init i2c interface\n"); | |
2527 | goto err_eeprom; | |
2528 | } | |
2529 | ||
9d5c8243 | 2530 | /* let the f/w know that the h/w is now under the control of the |
e52c0f96 CW |
2531 | * driver. |
2532 | */ | |
9d5c8243 AK |
2533 | igb_get_hw_control(adapter); |
2534 | ||
9d5c8243 AK |
2535 | strcpy(netdev->name, "eth%d"); |
2536 | err = register_netdev(netdev); | |
2537 | if (err) | |
2538 | goto err_register; | |
2539 | ||
b168dfc5 JB |
2540 | /* carrier off reporting is important to ethtool even BEFORE open */ |
2541 | netif_carrier_off(netdev); | |
2542 | ||
421e02f0 | 2543 | #ifdef CONFIG_IGB_DCA |
bbd98fe4 | 2544 | if (dca_add_requester(&pdev->dev) == 0) { |
7dfc16fa | 2545 | adapter->flags |= IGB_FLAG_DCA_ENABLED; |
fe4506b6 | 2546 | dev_info(&pdev->dev, "DCA enabled\n"); |
fe4506b6 JC |
2547 | igb_setup_dca(adapter); |
2548 | } | |
fe4506b6 | 2549 | |
38c845c7 | 2550 | #endif |
e428893b CW |
2551 | #ifdef CONFIG_IGB_HWMON |
2552 | /* Initialize the thermal sensor on i350 devices. */ | |
2553 | if (hw->mac.type == e1000_i350 && hw->bus.func == 0) { | |
2554 | u16 ets_word; | |
3c89f6d0 | 2555 | |
b980ac18 | 2556 | /* Read the NVM to determine if this i350 device supports an |
e428893b CW |
2557 | * external thermal sensor. |
2558 | */ | |
2559 | hw->nvm.ops.read(hw, NVM_ETS_CFG, 1, &ets_word); | |
2560 | if (ets_word != 0x0000 && ets_word != 0xFFFF) | |
2561 | adapter->ets = true; | |
2562 | else | |
2563 | adapter->ets = false; | |
2564 | if (igb_sysfs_init(adapter)) | |
2565 | dev_err(&pdev->dev, | |
2566 | "failed to allocate sysfs resources\n"); | |
2567 | } else { | |
2568 | adapter->ets = false; | |
2569 | } | |
2570 | #endif | |
56cec249 CW |
2571 | /* Check if Media Autosense is enabled */ |
2572 | adapter->ei = *ei; | |
2573 | if (hw->dev_spec._82575.mas_capable) | |
2574 | igb_init_mas(adapter); | |
2575 | ||
673b8b70 | 2576 | /* do hw tstamp init after resetting */ |
7ebae817 | 2577 | igb_ptp_init(adapter); |
673b8b70 | 2578 | |
9d5c8243 | 2579 | dev_info(&pdev->dev, "Intel(R) Gigabit Ethernet Network Connection\n"); |
ceb5f13b CW |
2580 | /* print bus type/speed/width info, not applicable to i354 */ |
2581 | if (hw->mac.type != e1000_i354) { | |
2582 | dev_info(&pdev->dev, "%s: (PCIe:%s:%s) %pM\n", | |
2583 | netdev->name, | |
2584 | ((hw->bus.speed == e1000_bus_speed_2500) ? "2.5Gb/s" : | |
2585 | (hw->bus.speed == e1000_bus_speed_5000) ? "5.0Gb/s" : | |
2586 | "unknown"), | |
2587 | ((hw->bus.width == e1000_bus_width_pcie_x4) ? | |
2588 | "Width x4" : | |
2589 | (hw->bus.width == e1000_bus_width_pcie_x2) ? | |
2590 | "Width x2" : | |
2591 | (hw->bus.width == e1000_bus_width_pcie_x1) ? | |
2592 | "Width x1" : "unknown"), netdev->dev_addr); | |
2593 | } | |
9d5c8243 | 2594 | |
53ea6c7e TF |
2595 | if ((hw->mac.type >= e1000_i210 || |
2596 | igb_get_flash_presence_i210(hw))) { | |
2597 | ret_val = igb_read_part_string(hw, part_str, | |
2598 | E1000_PBANUM_LENGTH); | |
2599 | } else { | |
2600 | ret_val = -E1000_ERR_INVM_VALUE_NOT_FOUND; | |
2601 | } | |
2602 | ||
9835fd73 CW |
2603 | if (ret_val) |
2604 | strcpy(part_str, "Unknown"); | |
2605 | dev_info(&pdev->dev, "%s: PBA No: %s\n", netdev->name, part_str); | |
9d5c8243 AK |
2606 | dev_info(&pdev->dev, |
2607 | "Using %s interrupts. %d rx queue(s), %d tx queue(s)\n", | |
cd14ef54 | 2608 | (adapter->flags & IGB_FLAG_HAS_MSIX) ? "MSI-X" : |
7dfc16fa | 2609 | (adapter->flags & IGB_FLAG_HAS_MSI) ? "MSI" : "legacy", |
9d5c8243 | 2610 | adapter->num_rx_queues, adapter->num_tx_queues); |
f4c01e96 CW |
2611 | if (hw->phy.media_type == e1000_media_type_copper) { |
2612 | switch (hw->mac.type) { | |
2613 | case e1000_i350: | |
2614 | case e1000_i210: | |
2615 | case e1000_i211: | |
2616 | /* Enable EEE for internal copper PHY devices */ | |
c4c112f1 | 2617 | err = igb_set_eee_i350(hw, true, true); |
f4c01e96 CW |
2618 | if ((!err) && |
2619 | (!hw->dev_spec._82575.eee_disable)) { | |
2620 | adapter->eee_advert = | |
2621 | MDIO_EEE_100TX | MDIO_EEE_1000T; | |
2622 | adapter->flags |= IGB_FLAG_EEE; | |
2623 | } | |
2624 | break; | |
2625 | case e1000_i354: | |
ceb5f13b | 2626 | if ((rd32(E1000_CTRL_EXT) & |
f4c01e96 | 2627 | E1000_CTRL_EXT_LINK_MODE_SGMII)) { |
c4c112f1 | 2628 | err = igb_set_eee_i354(hw, true, true); |
f4c01e96 CW |
2629 | if ((!err) && |
2630 | (!hw->dev_spec._82575.eee_disable)) { | |
2631 | adapter->eee_advert = | |
2632 | MDIO_EEE_100TX | MDIO_EEE_1000T; | |
2633 | adapter->flags |= IGB_FLAG_EEE; | |
2634 | } | |
2635 | } | |
2636 | break; | |
2637 | default: | |
2638 | break; | |
ceb5f13b | 2639 | } |
09b068d4 | 2640 | } |
749ab2cd | 2641 | pm_runtime_put_noidle(&pdev->dev); |
9d5c8243 AK |
2642 | return 0; |
2643 | ||
2644 | err_register: | |
2645 | igb_release_hw_control(adapter); | |
441fc6fd | 2646 | memset(&adapter->i2c_adap, 0, sizeof(adapter->i2c_adap)); |
9d5c8243 AK |
2647 | err_eeprom: |
2648 | if (!igb_check_reset_block(hw)) | |
f5f4cf08 | 2649 | igb_reset_phy(hw); |
9d5c8243 AK |
2650 | |
2651 | if (hw->flash_address) | |
2652 | iounmap(hw->flash_address); | |
9d5c8243 | 2653 | err_sw_init: |
42ad1a03 | 2654 | kfree(adapter->shadow_vfta); |
047e0030 | 2655 | igb_clear_interrupt_scheme(adapter); |
ceee3450 TF |
2656 | #ifdef CONFIG_PCI_IOV |
2657 | igb_disable_sriov(pdev); | |
2658 | #endif | |
75009b3a | 2659 | pci_iounmap(pdev, hw->hw_addr); |
9d5c8243 AK |
2660 | err_ioremap: |
2661 | free_netdev(netdev); | |
2662 | err_alloc_etherdev: | |
559e9c49 | 2663 | pci_release_selected_regions(pdev, |
b980ac18 | 2664 | pci_select_bars(pdev, IORESOURCE_MEM)); |
9d5c8243 AK |
2665 | err_pci_reg: |
2666 | err_dma: | |
2667 | pci_disable_device(pdev); | |
2668 | return err; | |
2669 | } | |
2670 | ||
fa44f2f1 | 2671 | #ifdef CONFIG_PCI_IOV |
781798a1 | 2672 | static int igb_disable_sriov(struct pci_dev *pdev) |
fa44f2f1 GR |
2673 | { |
2674 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2675 | struct igb_adapter *adapter = netdev_priv(netdev); | |
2676 | struct e1000_hw *hw = &adapter->hw; | |
2677 | ||
2678 | /* reclaim resources allocated to VFs */ | |
2679 | if (adapter->vf_data) { | |
2680 | /* disable iov and allow time for transactions to clear */ | |
b09186d2 | 2681 | if (pci_vfs_assigned(pdev)) { |
fa44f2f1 GR |
2682 | dev_warn(&pdev->dev, |
2683 | "Cannot deallocate SR-IOV virtual functions while they are assigned - VFs will not be deallocated\n"); | |
2684 | return -EPERM; | |
2685 | } else { | |
2686 | pci_disable_sriov(pdev); | |
2687 | msleep(500); | |
2688 | } | |
2689 | ||
2690 | kfree(adapter->vf_data); | |
2691 | adapter->vf_data = NULL; | |
2692 | adapter->vfs_allocated_count = 0; | |
2693 | wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ); | |
2694 | wrfl(); | |
2695 | msleep(100); | |
2696 | dev_info(&pdev->dev, "IOV Disabled\n"); | |
2697 | ||
2698 | /* Re-enable DMA Coalescing flag since IOV is turned off */ | |
2699 | adapter->flags |= IGB_FLAG_DMAC; | |
2700 | } | |
2701 | ||
2702 | return 0; | |
2703 | } | |
2704 | ||
2705 | static int igb_enable_sriov(struct pci_dev *pdev, int num_vfs) | |
2706 | { | |
2707 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2708 | struct igb_adapter *adapter = netdev_priv(netdev); | |
2709 | int old_vfs = pci_num_vf(pdev); | |
2710 | int err = 0; | |
2711 | int i; | |
2712 | ||
cd14ef54 | 2713 | if (!(adapter->flags & IGB_FLAG_HAS_MSIX) || num_vfs > 7) { |
50267196 MW |
2714 | err = -EPERM; |
2715 | goto out; | |
2716 | } | |
fa44f2f1 GR |
2717 | if (!num_vfs) |
2718 | goto out; | |
fa44f2f1 | 2719 | |
781798a1 SA |
2720 | if (old_vfs) { |
2721 | dev_info(&pdev->dev, "%d pre-allocated VFs found - override max_vfs setting of %d\n", | |
2722 | old_vfs, max_vfs); | |
2723 | adapter->vfs_allocated_count = old_vfs; | |
2724 | } else | |
2725 | adapter->vfs_allocated_count = num_vfs; | |
fa44f2f1 GR |
2726 | |
2727 | adapter->vf_data = kcalloc(adapter->vfs_allocated_count, | |
2728 | sizeof(struct vf_data_storage), GFP_KERNEL); | |
2729 | ||
2730 | /* if allocation failed then we do not support SR-IOV */ | |
2731 | if (!adapter->vf_data) { | |
2732 | adapter->vfs_allocated_count = 0; | |
2733 | dev_err(&pdev->dev, | |
2734 | "Unable to allocate memory for VF Data Storage\n"); | |
2735 | err = -ENOMEM; | |
2736 | goto out; | |
2737 | } | |
2738 | ||
781798a1 SA |
2739 | /* only call pci_enable_sriov() if no VFs are allocated already */ |
2740 | if (!old_vfs) { | |
2741 | err = pci_enable_sriov(pdev, adapter->vfs_allocated_count); | |
2742 | if (err) | |
2743 | goto err_out; | |
2744 | } | |
fa44f2f1 GR |
2745 | dev_info(&pdev->dev, "%d VFs allocated\n", |
2746 | adapter->vfs_allocated_count); | |
2747 | for (i = 0; i < adapter->vfs_allocated_count; i++) | |
2748 | igb_vf_configure(adapter, i); | |
2749 | ||
2750 | /* DMA Coalescing is not supported in IOV mode. */ | |
2751 | adapter->flags &= ~IGB_FLAG_DMAC; | |
2752 | goto out; | |
2753 | ||
2754 | err_out: | |
2755 | kfree(adapter->vf_data); | |
2756 | adapter->vf_data = NULL; | |
2757 | adapter->vfs_allocated_count = 0; | |
2758 | out: | |
2759 | return err; | |
2760 | } | |
2761 | ||
2762 | #endif | |
b980ac18 | 2763 | /** |
441fc6fd CW |
2764 | * igb_remove_i2c - Cleanup I2C interface |
2765 | * @adapter: pointer to adapter structure | |
b980ac18 | 2766 | **/ |
441fc6fd CW |
2767 | static void igb_remove_i2c(struct igb_adapter *adapter) |
2768 | { | |
441fc6fd CW |
2769 | /* free the adapter bus structure */ |
2770 | i2c_del_adapter(&adapter->i2c_adap); | |
2771 | } | |
2772 | ||
9d5c8243 | 2773 | /** |
b980ac18 JK |
2774 | * igb_remove - Device Removal Routine |
2775 | * @pdev: PCI device information struct | |
9d5c8243 | 2776 | * |
b980ac18 JK |
2777 | * igb_remove is called by the PCI subsystem to alert the driver |
2778 | * that it should release a PCI device. The could be caused by a | |
2779 | * Hot-Plug event, or because the driver is going to be removed from | |
2780 | * memory. | |
9d5c8243 | 2781 | **/ |
9f9a12f8 | 2782 | static void igb_remove(struct pci_dev *pdev) |
9d5c8243 AK |
2783 | { |
2784 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2785 | struct igb_adapter *adapter = netdev_priv(netdev); | |
fe4506b6 | 2786 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 | 2787 | |
749ab2cd | 2788 | pm_runtime_get_noresume(&pdev->dev); |
e428893b CW |
2789 | #ifdef CONFIG_IGB_HWMON |
2790 | igb_sysfs_exit(adapter); | |
2791 | #endif | |
441fc6fd | 2792 | igb_remove_i2c(adapter); |
a79f4f88 | 2793 | igb_ptp_stop(adapter); |
b980ac18 | 2794 | /* The watchdog timer may be rescheduled, so explicitly |
760141a5 TH |
2795 | * disable watchdog from being rescheduled. |
2796 | */ | |
9d5c8243 AK |
2797 | set_bit(__IGB_DOWN, &adapter->state); |
2798 | del_timer_sync(&adapter->watchdog_timer); | |
2799 | del_timer_sync(&adapter->phy_info_timer); | |
2800 | ||
760141a5 TH |
2801 | cancel_work_sync(&adapter->reset_task); |
2802 | cancel_work_sync(&adapter->watchdog_task); | |
9d5c8243 | 2803 | |
421e02f0 | 2804 | #ifdef CONFIG_IGB_DCA |
7dfc16fa | 2805 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) { |
fe4506b6 JC |
2806 | dev_info(&pdev->dev, "DCA disabled\n"); |
2807 | dca_remove_requester(&pdev->dev); | |
7dfc16fa | 2808 | adapter->flags &= ~IGB_FLAG_DCA_ENABLED; |
cbd347ad | 2809 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE); |
fe4506b6 JC |
2810 | } |
2811 | #endif | |
2812 | ||
9d5c8243 | 2813 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
b980ac18 JK |
2814 | * would have already happened in close and is redundant. |
2815 | */ | |
9d5c8243 AK |
2816 | igb_release_hw_control(adapter); |
2817 | ||
37680117 | 2818 | #ifdef CONFIG_PCI_IOV |
fa44f2f1 | 2819 | igb_disable_sriov(pdev); |
37680117 | 2820 | #endif |
559e9c49 | 2821 | |
c23d92b8 AW |
2822 | unregister_netdev(netdev); |
2823 | ||
2824 | igb_clear_interrupt_scheme(adapter); | |
2825 | ||
75009b3a | 2826 | pci_iounmap(pdev, hw->hw_addr); |
28b0759c AD |
2827 | if (hw->flash_address) |
2828 | iounmap(hw->flash_address); | |
559e9c49 | 2829 | pci_release_selected_regions(pdev, |
b980ac18 | 2830 | pci_select_bars(pdev, IORESOURCE_MEM)); |
9d5c8243 | 2831 | |
1128c756 | 2832 | kfree(adapter->shadow_vfta); |
9d5c8243 AK |
2833 | free_netdev(netdev); |
2834 | ||
19d5afd4 | 2835 | pci_disable_pcie_error_reporting(pdev); |
40a914fa | 2836 | |
9d5c8243 AK |
2837 | pci_disable_device(pdev); |
2838 | } | |
2839 | ||
a6b623e0 | 2840 | /** |
b980ac18 JK |
2841 | * igb_probe_vfs - Initialize vf data storage and add VFs to pci config space |
2842 | * @adapter: board private structure to initialize | |
a6b623e0 | 2843 | * |
b980ac18 JK |
2844 | * This function initializes the vf specific data storage and then attempts to |
2845 | * allocate the VFs. The reason for ordering it this way is because it is much | |
2846 | * mor expensive time wise to disable SR-IOV than it is to allocate and free | |
2847 | * the memory for the VFs. | |
a6b623e0 | 2848 | **/ |
9f9a12f8 | 2849 | static void igb_probe_vfs(struct igb_adapter *adapter) |
a6b623e0 AD |
2850 | { |
2851 | #ifdef CONFIG_PCI_IOV | |
2852 | struct pci_dev *pdev = adapter->pdev; | |
f96a8a0b | 2853 | struct e1000_hw *hw = &adapter->hw; |
a6b623e0 | 2854 | |
f96a8a0b CW |
2855 | /* Virtualization features not supported on i210 family. */ |
2856 | if ((hw->mac.type == e1000_i210) || (hw->mac.type == e1000_i211)) | |
2857 | return; | |
2858 | ||
fa44f2f1 | 2859 | pci_sriov_set_totalvfs(pdev, 7); |
6423fc34 | 2860 | igb_enable_sriov(pdev, max_vfs); |
0224d663 | 2861 | |
a6b623e0 AD |
2862 | #endif /* CONFIG_PCI_IOV */ |
2863 | } | |
2864 | ||
fa44f2f1 | 2865 | static void igb_init_queue_configuration(struct igb_adapter *adapter) |
9d5c8243 AK |
2866 | { |
2867 | struct e1000_hw *hw = &adapter->hw; | |
374a542d | 2868 | u32 max_rss_queues; |
9d5c8243 | 2869 | |
374a542d | 2870 | /* Determine the maximum number of RSS queues supported. */ |
f96a8a0b | 2871 | switch (hw->mac.type) { |
374a542d MV |
2872 | case e1000_i211: |
2873 | max_rss_queues = IGB_MAX_RX_QUEUES_I211; | |
2874 | break; | |
2875 | case e1000_82575: | |
f96a8a0b | 2876 | case e1000_i210: |
374a542d MV |
2877 | max_rss_queues = IGB_MAX_RX_QUEUES_82575; |
2878 | break; | |
2879 | case e1000_i350: | |
2880 | /* I350 cannot do RSS and SR-IOV at the same time */ | |
2881 | if (!!adapter->vfs_allocated_count) { | |
2882 | max_rss_queues = 1; | |
2883 | break; | |
2884 | } | |
2885 | /* fall through */ | |
2886 | case e1000_82576: | |
2887 | if (!!adapter->vfs_allocated_count) { | |
2888 | max_rss_queues = 2; | |
2889 | break; | |
2890 | } | |
2891 | /* fall through */ | |
2892 | case e1000_82580: | |
ceb5f13b | 2893 | case e1000_i354: |
374a542d MV |
2894 | default: |
2895 | max_rss_queues = IGB_MAX_RX_QUEUES; | |
f96a8a0b | 2896 | break; |
374a542d MV |
2897 | } |
2898 | ||
2899 | adapter->rss_queues = min_t(u32, max_rss_queues, num_online_cpus()); | |
2900 | ||
72ddef05 SS |
2901 | igb_set_flag_queue_pairs(adapter, max_rss_queues); |
2902 | } | |
2903 | ||
2904 | void igb_set_flag_queue_pairs(struct igb_adapter *adapter, | |
2905 | const u32 max_rss_queues) | |
2906 | { | |
2907 | struct e1000_hw *hw = &adapter->hw; | |
2908 | ||
374a542d MV |
2909 | /* Determine if we need to pair queues. */ |
2910 | switch (hw->mac.type) { | |
2911 | case e1000_82575: | |
f96a8a0b | 2912 | case e1000_i211: |
374a542d | 2913 | /* Device supports enough interrupts without queue pairing. */ |
f96a8a0b | 2914 | break; |
374a542d | 2915 | case e1000_82576: |
b980ac18 | 2916 | /* If VFs are going to be allocated with RSS queues then we |
374a542d MV |
2917 | * should pair the queues in order to conserve interrupts due |
2918 | * to limited supply. | |
2919 | */ | |
2920 | if ((adapter->rss_queues > 1) && | |
2921 | (adapter->vfs_allocated_count > 6)) | |
2922 | adapter->flags |= IGB_FLAG_QUEUE_PAIRS; | |
2923 | /* fall through */ | |
2924 | case e1000_82580: | |
2925 | case e1000_i350: | |
ceb5f13b | 2926 | case e1000_i354: |
374a542d | 2927 | case e1000_i210: |
f96a8a0b | 2928 | default: |
b980ac18 | 2929 | /* If rss_queues > half of max_rss_queues, pair the queues in |
374a542d MV |
2930 | * order to conserve interrupts due to limited supply. |
2931 | */ | |
2932 | if (adapter->rss_queues > (max_rss_queues / 2)) | |
2933 | adapter->flags |= IGB_FLAG_QUEUE_PAIRS; | |
f96a8a0b CW |
2934 | break; |
2935 | } | |
fa44f2f1 GR |
2936 | } |
2937 | ||
2938 | /** | |
b980ac18 JK |
2939 | * igb_sw_init - Initialize general software structures (struct igb_adapter) |
2940 | * @adapter: board private structure to initialize | |
fa44f2f1 | 2941 | * |
b980ac18 JK |
2942 | * igb_sw_init initializes the Adapter private data structure. |
2943 | * Fields are initialized based on PCI device information and | |
2944 | * OS network device settings (MTU size). | |
fa44f2f1 GR |
2945 | **/ |
2946 | static int igb_sw_init(struct igb_adapter *adapter) | |
2947 | { | |
2948 | struct e1000_hw *hw = &adapter->hw; | |
2949 | struct net_device *netdev = adapter->netdev; | |
2950 | struct pci_dev *pdev = adapter->pdev; | |
2951 | ||
2952 | pci_read_config_word(pdev, PCI_COMMAND, &hw->bus.pci_cmd_word); | |
2953 | ||
2954 | /* set default ring sizes */ | |
2955 | adapter->tx_ring_count = IGB_DEFAULT_TXD; | |
2956 | adapter->rx_ring_count = IGB_DEFAULT_RXD; | |
2957 | ||
2958 | /* set default ITR values */ | |
2959 | adapter->rx_itr_setting = IGB_DEFAULT_ITR; | |
2960 | adapter->tx_itr_setting = IGB_DEFAULT_ITR; | |
2961 | ||
2962 | /* set default work limits */ | |
2963 | adapter->tx_work_limit = IGB_DEFAULT_TX_WORK; | |
2964 | ||
2965 | adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN + | |
2966 | VLAN_HLEN; | |
2967 | adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; | |
2968 | ||
2969 | spin_lock_init(&adapter->stats64_lock); | |
2970 | #ifdef CONFIG_PCI_IOV | |
2971 | switch (hw->mac.type) { | |
2972 | case e1000_82576: | |
2973 | case e1000_i350: | |
2974 | if (max_vfs > 7) { | |
2975 | dev_warn(&pdev->dev, | |
2976 | "Maximum of 7 VFs per PF, using max\n"); | |
d0f63acc | 2977 | max_vfs = adapter->vfs_allocated_count = 7; |
fa44f2f1 GR |
2978 | } else |
2979 | adapter->vfs_allocated_count = max_vfs; | |
2980 | if (adapter->vfs_allocated_count) | |
2981 | dev_warn(&pdev->dev, | |
2982 | "Enabling SR-IOV VFs using the module parameter is deprecated - please use the pci sysfs interface.\n"); | |
2983 | break; | |
2984 | default: | |
2985 | break; | |
2986 | } | |
2987 | #endif /* CONFIG_PCI_IOV */ | |
2988 | ||
cbfe360a SA |
2989 | /* Assume MSI-X interrupts, will be checked during IRQ allocation */ |
2990 | adapter->flags |= IGB_FLAG_HAS_MSIX; | |
2991 | ||
ceee3450 TF |
2992 | igb_probe_vfs(adapter); |
2993 | ||
fa44f2f1 | 2994 | igb_init_queue_configuration(adapter); |
a99955fc | 2995 | |
1128c756 | 2996 | /* Setup and initialize a copy of the hw vlan table array */ |
b2adaca9 JP |
2997 | adapter->shadow_vfta = kcalloc(E1000_VLAN_FILTER_TBL_SIZE, sizeof(u32), |
2998 | GFP_ATOMIC); | |
1128c756 | 2999 | |
a6b623e0 | 3000 | /* This call may decrease the number of queues */ |
53c7d064 | 3001 | if (igb_init_interrupt_scheme(adapter, true)) { |
9d5c8243 AK |
3002 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); |
3003 | return -ENOMEM; | |
3004 | } | |
3005 | ||
3006 | /* Explicitly disable IRQ since the NIC can be in any state. */ | |
3007 | igb_irq_disable(adapter); | |
3008 | ||
f96a8a0b | 3009 | if (hw->mac.type >= e1000_i350) |
831ec0b4 CW |
3010 | adapter->flags &= ~IGB_FLAG_DMAC; |
3011 | ||
9d5c8243 AK |
3012 | set_bit(__IGB_DOWN, &adapter->state); |
3013 | return 0; | |
3014 | } | |
3015 | ||
3016 | /** | |
b980ac18 JK |
3017 | * igb_open - Called when a network interface is made active |
3018 | * @netdev: network interface device structure | |
9d5c8243 | 3019 | * |
b980ac18 | 3020 | * Returns 0 on success, negative value on failure |
9d5c8243 | 3021 | * |
b980ac18 JK |
3022 | * The open entry point is called when a network interface is made |
3023 | * active by the system (IFF_UP). At this point all resources needed | |
3024 | * for transmit and receive operations are allocated, the interrupt | |
3025 | * handler is registered with the OS, the watchdog timer is started, | |
3026 | * and the stack is notified that the interface is ready. | |
9d5c8243 | 3027 | **/ |
749ab2cd | 3028 | static int __igb_open(struct net_device *netdev, bool resuming) |
9d5c8243 AK |
3029 | { |
3030 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3031 | struct e1000_hw *hw = &adapter->hw; | |
749ab2cd | 3032 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
3033 | int err; |
3034 | int i; | |
3035 | ||
3036 | /* disallow open during test */ | |
749ab2cd YZ |
3037 | if (test_bit(__IGB_TESTING, &adapter->state)) { |
3038 | WARN_ON(resuming); | |
9d5c8243 | 3039 | return -EBUSY; |
749ab2cd YZ |
3040 | } |
3041 | ||
3042 | if (!resuming) | |
3043 | pm_runtime_get_sync(&pdev->dev); | |
9d5c8243 | 3044 | |
b168dfc5 JB |
3045 | netif_carrier_off(netdev); |
3046 | ||
9d5c8243 AK |
3047 | /* allocate transmit descriptors */ |
3048 | err = igb_setup_all_tx_resources(adapter); | |
3049 | if (err) | |
3050 | goto err_setup_tx; | |
3051 | ||
3052 | /* allocate receive descriptors */ | |
3053 | err = igb_setup_all_rx_resources(adapter); | |
3054 | if (err) | |
3055 | goto err_setup_rx; | |
3056 | ||
88a268c1 | 3057 | igb_power_up_link(adapter); |
9d5c8243 | 3058 | |
9d5c8243 AK |
3059 | /* before we allocate an interrupt, we must be ready to handle it. |
3060 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt | |
3061 | * as soon as we call pci_request_irq, so we have to setup our | |
b980ac18 JK |
3062 | * clean_rx handler before we do so. |
3063 | */ | |
9d5c8243 AK |
3064 | igb_configure(adapter); |
3065 | ||
3066 | err = igb_request_irq(adapter); | |
3067 | if (err) | |
3068 | goto err_req_irq; | |
3069 | ||
0c2cc02e AD |
3070 | /* Notify the stack of the actual queue counts. */ |
3071 | err = netif_set_real_num_tx_queues(adapter->netdev, | |
3072 | adapter->num_tx_queues); | |
3073 | if (err) | |
3074 | goto err_set_queues; | |
3075 | ||
3076 | err = netif_set_real_num_rx_queues(adapter->netdev, | |
3077 | adapter->num_rx_queues); | |
3078 | if (err) | |
3079 | goto err_set_queues; | |
3080 | ||
9d5c8243 AK |
3081 | /* From here on the code is the same as igb_up() */ |
3082 | clear_bit(__IGB_DOWN, &adapter->state); | |
3083 | ||
0d1ae7f4 AD |
3084 | for (i = 0; i < adapter->num_q_vectors; i++) |
3085 | napi_enable(&(adapter->q_vector[i]->napi)); | |
9d5c8243 AK |
3086 | |
3087 | /* Clear any pending interrupts. */ | |
3088 | rd32(E1000_ICR); | |
844290e5 PW |
3089 | |
3090 | igb_irq_enable(adapter); | |
3091 | ||
d4960307 AD |
3092 | /* notify VFs that reset has been completed */ |
3093 | if (adapter->vfs_allocated_count) { | |
3094 | u32 reg_data = rd32(E1000_CTRL_EXT); | |
9005df38 | 3095 | |
d4960307 AD |
3096 | reg_data |= E1000_CTRL_EXT_PFRSTD; |
3097 | wr32(E1000_CTRL_EXT, reg_data); | |
3098 | } | |
3099 | ||
d55b53ff JK |
3100 | netif_tx_start_all_queues(netdev); |
3101 | ||
749ab2cd YZ |
3102 | if (!resuming) |
3103 | pm_runtime_put(&pdev->dev); | |
3104 | ||
25568a53 AD |
3105 | /* start the watchdog. */ |
3106 | hw->mac.get_link_status = 1; | |
3107 | schedule_work(&adapter->watchdog_task); | |
9d5c8243 AK |
3108 | |
3109 | return 0; | |
3110 | ||
0c2cc02e AD |
3111 | err_set_queues: |
3112 | igb_free_irq(adapter); | |
9d5c8243 AK |
3113 | err_req_irq: |
3114 | igb_release_hw_control(adapter); | |
88a268c1 | 3115 | igb_power_down_link(adapter); |
9d5c8243 AK |
3116 | igb_free_all_rx_resources(adapter); |
3117 | err_setup_rx: | |
3118 | igb_free_all_tx_resources(adapter); | |
3119 | err_setup_tx: | |
3120 | igb_reset(adapter); | |
749ab2cd YZ |
3121 | if (!resuming) |
3122 | pm_runtime_put(&pdev->dev); | |
9d5c8243 AK |
3123 | |
3124 | return err; | |
3125 | } | |
3126 | ||
749ab2cd YZ |
3127 | static int igb_open(struct net_device *netdev) |
3128 | { | |
3129 | return __igb_open(netdev, false); | |
3130 | } | |
3131 | ||
9d5c8243 | 3132 | /** |
b980ac18 JK |
3133 | * igb_close - Disables a network interface |
3134 | * @netdev: network interface device structure | |
9d5c8243 | 3135 | * |
b980ac18 | 3136 | * Returns 0, this is not allowed to fail |
9d5c8243 | 3137 | * |
b980ac18 JK |
3138 | * The close entry point is called when an interface is de-activated |
3139 | * by the OS. The hardware is still under the driver's control, but | |
3140 | * needs to be disabled. A global MAC reset is issued to stop the | |
3141 | * hardware, and all transmit and receive resources are freed. | |
9d5c8243 | 3142 | **/ |
749ab2cd | 3143 | static int __igb_close(struct net_device *netdev, bool suspending) |
9d5c8243 AK |
3144 | { |
3145 | struct igb_adapter *adapter = netdev_priv(netdev); | |
749ab2cd | 3146 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
3147 | |
3148 | WARN_ON(test_bit(__IGB_RESETTING, &adapter->state)); | |
9d5c8243 | 3149 | |
749ab2cd YZ |
3150 | if (!suspending) |
3151 | pm_runtime_get_sync(&pdev->dev); | |
3152 | ||
3153 | igb_down(adapter); | |
9d5c8243 AK |
3154 | igb_free_irq(adapter); |
3155 | ||
3156 | igb_free_all_tx_resources(adapter); | |
3157 | igb_free_all_rx_resources(adapter); | |
3158 | ||
749ab2cd YZ |
3159 | if (!suspending) |
3160 | pm_runtime_put_sync(&pdev->dev); | |
9d5c8243 AK |
3161 | return 0; |
3162 | } | |
3163 | ||
749ab2cd YZ |
3164 | static int igb_close(struct net_device *netdev) |
3165 | { | |
3166 | return __igb_close(netdev, false); | |
3167 | } | |
3168 | ||
9d5c8243 | 3169 | /** |
b980ac18 JK |
3170 | * igb_setup_tx_resources - allocate Tx resources (Descriptors) |
3171 | * @tx_ring: tx descriptor ring (for a specific queue) to setup | |
9d5c8243 | 3172 | * |
b980ac18 | 3173 | * Return 0 on success, negative on failure |
9d5c8243 | 3174 | **/ |
80785298 | 3175 | int igb_setup_tx_resources(struct igb_ring *tx_ring) |
9d5c8243 | 3176 | { |
59d71989 | 3177 | struct device *dev = tx_ring->dev; |
9d5c8243 AK |
3178 | int size; |
3179 | ||
06034649 | 3180 | size = sizeof(struct igb_tx_buffer) * tx_ring->count; |
f33005a6 AD |
3181 | |
3182 | tx_ring->tx_buffer_info = vzalloc(size); | |
06034649 | 3183 | if (!tx_ring->tx_buffer_info) |
9d5c8243 | 3184 | goto err; |
9d5c8243 AK |
3185 | |
3186 | /* round up to nearest 4K */ | |
85e8d004 | 3187 | tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc); |
9d5c8243 AK |
3188 | tx_ring->size = ALIGN(tx_ring->size, 4096); |
3189 | ||
5536d210 AD |
3190 | tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size, |
3191 | &tx_ring->dma, GFP_KERNEL); | |
9d5c8243 AK |
3192 | if (!tx_ring->desc) |
3193 | goto err; | |
3194 | ||
9d5c8243 AK |
3195 | tx_ring->next_to_use = 0; |
3196 | tx_ring->next_to_clean = 0; | |
81c2fc22 | 3197 | |
9d5c8243 AK |
3198 | return 0; |
3199 | ||
3200 | err: | |
06034649 | 3201 | vfree(tx_ring->tx_buffer_info); |
f33005a6 AD |
3202 | tx_ring->tx_buffer_info = NULL; |
3203 | dev_err(dev, "Unable to allocate memory for the Tx descriptor ring\n"); | |
9d5c8243 AK |
3204 | return -ENOMEM; |
3205 | } | |
3206 | ||
3207 | /** | |
b980ac18 JK |
3208 | * igb_setup_all_tx_resources - wrapper to allocate Tx resources |
3209 | * (Descriptors) for all queues | |
3210 | * @adapter: board private structure | |
9d5c8243 | 3211 | * |
b980ac18 | 3212 | * Return 0 on success, negative on failure |
9d5c8243 AK |
3213 | **/ |
3214 | static int igb_setup_all_tx_resources(struct igb_adapter *adapter) | |
3215 | { | |
439705e1 | 3216 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
3217 | int i, err = 0; |
3218 | ||
3219 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
3025a446 | 3220 | err = igb_setup_tx_resources(adapter->tx_ring[i]); |
9d5c8243 | 3221 | if (err) { |
439705e1 | 3222 | dev_err(&pdev->dev, |
9d5c8243 AK |
3223 | "Allocation for Tx Queue %u failed\n", i); |
3224 | for (i--; i >= 0; i--) | |
3025a446 | 3225 | igb_free_tx_resources(adapter->tx_ring[i]); |
9d5c8243 AK |
3226 | break; |
3227 | } | |
3228 | } | |
3229 | ||
3230 | return err; | |
3231 | } | |
3232 | ||
3233 | /** | |
b980ac18 JK |
3234 | * igb_setup_tctl - configure the transmit control registers |
3235 | * @adapter: Board private structure | |
9d5c8243 | 3236 | **/ |
d7ee5b3a | 3237 | void igb_setup_tctl(struct igb_adapter *adapter) |
9d5c8243 | 3238 | { |
9d5c8243 AK |
3239 | struct e1000_hw *hw = &adapter->hw; |
3240 | u32 tctl; | |
9d5c8243 | 3241 | |
85b430b4 AD |
3242 | /* disable queue 0 which is enabled by default on 82575 and 82576 */ |
3243 | wr32(E1000_TXDCTL(0), 0); | |
9d5c8243 AK |
3244 | |
3245 | /* Program the Transmit Control Register */ | |
9d5c8243 AK |
3246 | tctl = rd32(E1000_TCTL); |
3247 | tctl &= ~E1000_TCTL_CT; | |
3248 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | | |
3249 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); | |
3250 | ||
3251 | igb_config_collision_dist(hw); | |
3252 | ||
9d5c8243 AK |
3253 | /* Enable transmits */ |
3254 | tctl |= E1000_TCTL_EN; | |
3255 | ||
3256 | wr32(E1000_TCTL, tctl); | |
3257 | } | |
3258 | ||
85b430b4 | 3259 | /** |
b980ac18 JK |
3260 | * igb_configure_tx_ring - Configure transmit ring after Reset |
3261 | * @adapter: board private structure | |
3262 | * @ring: tx ring to configure | |
85b430b4 | 3263 | * |
b980ac18 | 3264 | * Configure a transmit ring after a reset. |
85b430b4 | 3265 | **/ |
d7ee5b3a | 3266 | void igb_configure_tx_ring(struct igb_adapter *adapter, |
9005df38 | 3267 | struct igb_ring *ring) |
85b430b4 AD |
3268 | { |
3269 | struct e1000_hw *hw = &adapter->hw; | |
a74420e0 | 3270 | u32 txdctl = 0; |
85b430b4 AD |
3271 | u64 tdba = ring->dma; |
3272 | int reg_idx = ring->reg_idx; | |
3273 | ||
3274 | /* disable the queue */ | |
a74420e0 | 3275 | wr32(E1000_TXDCTL(reg_idx), 0); |
85b430b4 AD |
3276 | wrfl(); |
3277 | mdelay(10); | |
3278 | ||
3279 | wr32(E1000_TDLEN(reg_idx), | |
b980ac18 | 3280 | ring->count * sizeof(union e1000_adv_tx_desc)); |
85b430b4 | 3281 | wr32(E1000_TDBAL(reg_idx), |
b980ac18 | 3282 | tdba & 0x00000000ffffffffULL); |
85b430b4 AD |
3283 | wr32(E1000_TDBAH(reg_idx), tdba >> 32); |
3284 | ||
fce99e34 | 3285 | ring->tail = hw->hw_addr + E1000_TDT(reg_idx); |
a74420e0 | 3286 | wr32(E1000_TDH(reg_idx), 0); |
fce99e34 | 3287 | writel(0, ring->tail); |
85b430b4 AD |
3288 | |
3289 | txdctl |= IGB_TX_PTHRESH; | |
3290 | txdctl |= IGB_TX_HTHRESH << 8; | |
3291 | txdctl |= IGB_TX_WTHRESH << 16; | |
3292 | ||
3293 | txdctl |= E1000_TXDCTL_QUEUE_ENABLE; | |
3294 | wr32(E1000_TXDCTL(reg_idx), txdctl); | |
3295 | } | |
3296 | ||
3297 | /** | |
b980ac18 JK |
3298 | * igb_configure_tx - Configure transmit Unit after Reset |
3299 | * @adapter: board private structure | |
85b430b4 | 3300 | * |
b980ac18 | 3301 | * Configure the Tx unit of the MAC after a reset. |
85b430b4 AD |
3302 | **/ |
3303 | static void igb_configure_tx(struct igb_adapter *adapter) | |
3304 | { | |
3305 | int i; | |
3306 | ||
3307 | for (i = 0; i < adapter->num_tx_queues; i++) | |
3025a446 | 3308 | igb_configure_tx_ring(adapter, adapter->tx_ring[i]); |
85b430b4 AD |
3309 | } |
3310 | ||
9d5c8243 | 3311 | /** |
b980ac18 JK |
3312 | * igb_setup_rx_resources - allocate Rx resources (Descriptors) |
3313 | * @rx_ring: Rx descriptor ring (for a specific queue) to setup | |
9d5c8243 | 3314 | * |
b980ac18 | 3315 | * Returns 0 on success, negative on failure |
9d5c8243 | 3316 | **/ |
80785298 | 3317 | int igb_setup_rx_resources(struct igb_ring *rx_ring) |
9d5c8243 | 3318 | { |
59d71989 | 3319 | struct device *dev = rx_ring->dev; |
f33005a6 | 3320 | int size; |
9d5c8243 | 3321 | |
06034649 | 3322 | size = sizeof(struct igb_rx_buffer) * rx_ring->count; |
f33005a6 AD |
3323 | |
3324 | rx_ring->rx_buffer_info = vzalloc(size); | |
06034649 | 3325 | if (!rx_ring->rx_buffer_info) |
9d5c8243 | 3326 | goto err; |
9d5c8243 | 3327 | |
9d5c8243 | 3328 | /* Round up to nearest 4K */ |
f33005a6 | 3329 | rx_ring->size = rx_ring->count * sizeof(union e1000_adv_rx_desc); |
9d5c8243 AK |
3330 | rx_ring->size = ALIGN(rx_ring->size, 4096); |
3331 | ||
5536d210 AD |
3332 | rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size, |
3333 | &rx_ring->dma, GFP_KERNEL); | |
9d5c8243 AK |
3334 | if (!rx_ring->desc) |
3335 | goto err; | |
3336 | ||
cbc8e55f | 3337 | rx_ring->next_to_alloc = 0; |
9d5c8243 AK |
3338 | rx_ring->next_to_clean = 0; |
3339 | rx_ring->next_to_use = 0; | |
9d5c8243 | 3340 | |
9d5c8243 AK |
3341 | return 0; |
3342 | ||
3343 | err: | |
06034649 AD |
3344 | vfree(rx_ring->rx_buffer_info); |
3345 | rx_ring->rx_buffer_info = NULL; | |
f33005a6 | 3346 | dev_err(dev, "Unable to allocate memory for the Rx descriptor ring\n"); |
9d5c8243 AK |
3347 | return -ENOMEM; |
3348 | } | |
3349 | ||
3350 | /** | |
b980ac18 JK |
3351 | * igb_setup_all_rx_resources - wrapper to allocate Rx resources |
3352 | * (Descriptors) for all queues | |
3353 | * @adapter: board private structure | |
9d5c8243 | 3354 | * |
b980ac18 | 3355 | * Return 0 on success, negative on failure |
9d5c8243 AK |
3356 | **/ |
3357 | static int igb_setup_all_rx_resources(struct igb_adapter *adapter) | |
3358 | { | |
439705e1 | 3359 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
3360 | int i, err = 0; |
3361 | ||
3362 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
3025a446 | 3363 | err = igb_setup_rx_resources(adapter->rx_ring[i]); |
9d5c8243 | 3364 | if (err) { |
439705e1 | 3365 | dev_err(&pdev->dev, |
9d5c8243 AK |
3366 | "Allocation for Rx Queue %u failed\n", i); |
3367 | for (i--; i >= 0; i--) | |
3025a446 | 3368 | igb_free_rx_resources(adapter->rx_ring[i]); |
9d5c8243 AK |
3369 | break; |
3370 | } | |
3371 | } | |
3372 | ||
3373 | return err; | |
3374 | } | |
3375 | ||
06cf2666 | 3376 | /** |
b980ac18 JK |
3377 | * igb_setup_mrqc - configure the multiple receive queue control registers |
3378 | * @adapter: Board private structure | |
06cf2666 AD |
3379 | **/ |
3380 | static void igb_setup_mrqc(struct igb_adapter *adapter) | |
3381 | { | |
3382 | struct e1000_hw *hw = &adapter->hw; | |
3383 | u32 mrqc, rxcsum; | |
ed12cc9a | 3384 | u32 j, num_rx_queues; |
eb31f849 | 3385 | u32 rss_key[10]; |
06cf2666 | 3386 | |
eb31f849 | 3387 | netdev_rss_key_fill(rss_key, sizeof(rss_key)); |
a57fe23e | 3388 | for (j = 0; j < 10; j++) |
eb31f849 | 3389 | wr32(E1000_RSSRK(j), rss_key[j]); |
06cf2666 | 3390 | |
a99955fc | 3391 | num_rx_queues = adapter->rss_queues; |
06cf2666 | 3392 | |
797fd4be | 3393 | switch (hw->mac.type) { |
797fd4be AD |
3394 | case e1000_82576: |
3395 | /* 82576 supports 2 RSS queues for SR-IOV */ | |
ed12cc9a | 3396 | if (adapter->vfs_allocated_count) |
06cf2666 | 3397 | num_rx_queues = 2; |
797fd4be AD |
3398 | break; |
3399 | default: | |
3400 | break; | |
06cf2666 AD |
3401 | } |
3402 | ||
ed12cc9a LMV |
3403 | if (adapter->rss_indir_tbl_init != num_rx_queues) { |
3404 | for (j = 0; j < IGB_RETA_SIZE; j++) | |
c502ea2e CW |
3405 | adapter->rss_indir_tbl[j] = |
3406 | (j * num_rx_queues) / IGB_RETA_SIZE; | |
ed12cc9a | 3407 | adapter->rss_indir_tbl_init = num_rx_queues; |
06cf2666 | 3408 | } |
ed12cc9a | 3409 | igb_write_rss_indir_tbl(adapter); |
06cf2666 | 3410 | |
b980ac18 | 3411 | /* Disable raw packet checksumming so that RSS hash is placed in |
06cf2666 AD |
3412 | * descriptor on writeback. No need to enable TCP/UDP/IP checksum |
3413 | * offloads as they are enabled by default | |
3414 | */ | |
3415 | rxcsum = rd32(E1000_RXCSUM); | |
3416 | rxcsum |= E1000_RXCSUM_PCSD; | |
3417 | ||
3418 | if (adapter->hw.mac.type >= e1000_82576) | |
3419 | /* Enable Receive Checksum Offload for SCTP */ | |
3420 | rxcsum |= E1000_RXCSUM_CRCOFL; | |
3421 | ||
3422 | /* Don't need to set TUOFL or IPOFL, they default to 1 */ | |
3423 | wr32(E1000_RXCSUM, rxcsum); | |
f96a8a0b | 3424 | |
039454a8 AA |
3425 | /* Generate RSS hash based on packet types, TCP/UDP |
3426 | * port numbers and/or IPv4/v6 src and dst addresses | |
3427 | */ | |
f96a8a0b CW |
3428 | mrqc = E1000_MRQC_RSS_FIELD_IPV4 | |
3429 | E1000_MRQC_RSS_FIELD_IPV4_TCP | | |
3430 | E1000_MRQC_RSS_FIELD_IPV6 | | |
3431 | E1000_MRQC_RSS_FIELD_IPV6_TCP | | |
3432 | E1000_MRQC_RSS_FIELD_IPV6_TCP_EX; | |
06cf2666 | 3433 | |
039454a8 AA |
3434 | if (adapter->flags & IGB_FLAG_RSS_FIELD_IPV4_UDP) |
3435 | mrqc |= E1000_MRQC_RSS_FIELD_IPV4_UDP; | |
3436 | if (adapter->flags & IGB_FLAG_RSS_FIELD_IPV6_UDP) | |
3437 | mrqc |= E1000_MRQC_RSS_FIELD_IPV6_UDP; | |
3438 | ||
06cf2666 AD |
3439 | /* If VMDq is enabled then we set the appropriate mode for that, else |
3440 | * we default to RSS so that an RSS hash is calculated per packet even | |
b980ac18 JK |
3441 | * if we are only using one queue |
3442 | */ | |
06cf2666 AD |
3443 | if (adapter->vfs_allocated_count) { |
3444 | if (hw->mac.type > e1000_82575) { | |
3445 | /* Set the default pool for the PF's first queue */ | |
3446 | u32 vtctl = rd32(E1000_VT_CTL); | |
9005df38 | 3447 | |
06cf2666 AD |
3448 | vtctl &= ~(E1000_VT_CTL_DEFAULT_POOL_MASK | |
3449 | E1000_VT_CTL_DISABLE_DEF_POOL); | |
3450 | vtctl |= adapter->vfs_allocated_count << | |
3451 | E1000_VT_CTL_DEFAULT_POOL_SHIFT; | |
3452 | wr32(E1000_VT_CTL, vtctl); | |
3453 | } | |
a99955fc | 3454 | if (adapter->rss_queues > 1) |
f96a8a0b | 3455 | mrqc |= E1000_MRQC_ENABLE_VMDQ_RSS_2Q; |
06cf2666 | 3456 | else |
f96a8a0b | 3457 | mrqc |= E1000_MRQC_ENABLE_VMDQ; |
06cf2666 | 3458 | } else { |
f96a8a0b CW |
3459 | if (hw->mac.type != e1000_i211) |
3460 | mrqc |= E1000_MRQC_ENABLE_RSS_4Q; | |
06cf2666 AD |
3461 | } |
3462 | igb_vmm_control(adapter); | |
3463 | ||
06cf2666 AD |
3464 | wr32(E1000_MRQC, mrqc); |
3465 | } | |
3466 | ||
9d5c8243 | 3467 | /** |
b980ac18 JK |
3468 | * igb_setup_rctl - configure the receive control registers |
3469 | * @adapter: Board private structure | |
9d5c8243 | 3470 | **/ |
d7ee5b3a | 3471 | void igb_setup_rctl(struct igb_adapter *adapter) |
9d5c8243 AK |
3472 | { |
3473 | struct e1000_hw *hw = &adapter->hw; | |
3474 | u32 rctl; | |
9d5c8243 AK |
3475 | |
3476 | rctl = rd32(E1000_RCTL); | |
3477 | ||
3478 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
69d728ba | 3479 | rctl &= ~(E1000_RCTL_LBM_TCVR | E1000_RCTL_LBM_MAC); |
9d5c8243 | 3480 | |
69d728ba | 3481 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_RDMTS_HALF | |
28b0759c | 3482 | (hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT); |
9d5c8243 | 3483 | |
b980ac18 | 3484 | /* enable stripping of CRC. It's unlikely this will break BMC |
87cb7e8c AK |
3485 | * redirection as it did with e1000. Newer features require |
3486 | * that the HW strips the CRC. | |
73cd78f1 | 3487 | */ |
87cb7e8c | 3488 | rctl |= E1000_RCTL_SECRC; |
9d5c8243 | 3489 | |
559e9c49 | 3490 | /* disable store bad packets and clear size bits. */ |
ec54d7d6 | 3491 | rctl &= ~(E1000_RCTL_SBP | E1000_RCTL_SZ_256); |
9d5c8243 | 3492 | |
6ec43fe6 AD |
3493 | /* enable LPE to prevent packets larger than max_frame_size */ |
3494 | rctl |= E1000_RCTL_LPE; | |
9d5c8243 | 3495 | |
952f72a8 AD |
3496 | /* disable queue 0 to prevent tail write w/o re-config */ |
3497 | wr32(E1000_RXDCTL(0), 0); | |
9d5c8243 | 3498 | |
e1739522 AD |
3499 | /* Attention!!! For SR-IOV PF driver operations you must enable |
3500 | * queue drop for all VF and PF queues to prevent head of line blocking | |
3501 | * if an un-trusted VF does not provide descriptors to hardware. | |
3502 | */ | |
3503 | if (adapter->vfs_allocated_count) { | |
e1739522 AD |
3504 | /* set all queue drop enable bits */ |
3505 | wr32(E1000_QDE, ALL_QUEUES); | |
e1739522 AD |
3506 | } |
3507 | ||
89eaefb6 BG |
3508 | /* This is useful for sniffing bad packets. */ |
3509 | if (adapter->netdev->features & NETIF_F_RXALL) { | |
3510 | /* UPE and MPE will be handled by normal PROMISC logic | |
b980ac18 JK |
3511 | * in e1000e_set_rx_mode |
3512 | */ | |
89eaefb6 BG |
3513 | rctl |= (E1000_RCTL_SBP | /* Receive bad packets */ |
3514 | E1000_RCTL_BAM | /* RX All Bcast Pkts */ | |
3515 | E1000_RCTL_PMCF); /* RX All MAC Ctrl Pkts */ | |
3516 | ||
3517 | rctl &= ~(E1000_RCTL_VFE | /* Disable VLAN filter */ | |
3518 | E1000_RCTL_DPF | /* Allow filtered pause */ | |
3519 | E1000_RCTL_CFIEN); /* Dis VLAN CFIEN Filter */ | |
3520 | /* Do not mess with E1000_CTRL_VME, it affects transmit as well, | |
3521 | * and that breaks VLANs. | |
3522 | */ | |
3523 | } | |
3524 | ||
9d5c8243 AK |
3525 | wr32(E1000_RCTL, rctl); |
3526 | } | |
3527 | ||
7d5753f0 | 3528 | static inline int igb_set_vf_rlpml(struct igb_adapter *adapter, int size, |
9005df38 | 3529 | int vfn) |
7d5753f0 AD |
3530 | { |
3531 | struct e1000_hw *hw = &adapter->hw; | |
3532 | u32 vmolr; | |
3533 | ||
3534 | /* if it isn't the PF check to see if VFs are enabled and | |
b980ac18 JK |
3535 | * increase the size to support vlan tags |
3536 | */ | |
7d5753f0 AD |
3537 | if (vfn < adapter->vfs_allocated_count && |
3538 | adapter->vf_data[vfn].vlans_enabled) | |
3539 | size += VLAN_TAG_SIZE; | |
3540 | ||
3541 | vmolr = rd32(E1000_VMOLR(vfn)); | |
3542 | vmolr &= ~E1000_VMOLR_RLPML_MASK; | |
3543 | vmolr |= size | E1000_VMOLR_LPE; | |
3544 | wr32(E1000_VMOLR(vfn), vmolr); | |
3545 | ||
3546 | return 0; | |
3547 | } | |
3548 | ||
e1739522 | 3549 | /** |
b980ac18 JK |
3550 | * igb_rlpml_set - set maximum receive packet size |
3551 | * @adapter: board private structure | |
e1739522 | 3552 | * |
b980ac18 | 3553 | * Configure maximum receivable packet size. |
e1739522 AD |
3554 | **/ |
3555 | static void igb_rlpml_set(struct igb_adapter *adapter) | |
3556 | { | |
153285f9 | 3557 | u32 max_frame_size = adapter->max_frame_size; |
e1739522 AD |
3558 | struct e1000_hw *hw = &adapter->hw; |
3559 | u16 pf_id = adapter->vfs_allocated_count; | |
3560 | ||
e1739522 AD |
3561 | if (pf_id) { |
3562 | igb_set_vf_rlpml(adapter, max_frame_size, pf_id); | |
b980ac18 | 3563 | /* If we're in VMDQ or SR-IOV mode, then set global RLPML |
153285f9 AD |
3564 | * to our max jumbo frame size, in case we need to enable |
3565 | * jumbo frames on one of the rings later. | |
3566 | * This will not pass over-length frames into the default | |
3567 | * queue because it's gated by the VMOLR.RLPML. | |
3568 | */ | |
7d5753f0 | 3569 | max_frame_size = MAX_JUMBO_FRAME_SIZE; |
e1739522 AD |
3570 | } |
3571 | ||
3572 | wr32(E1000_RLPML, max_frame_size); | |
3573 | } | |
3574 | ||
8151d294 WM |
3575 | static inline void igb_set_vmolr(struct igb_adapter *adapter, |
3576 | int vfn, bool aupe) | |
7d5753f0 AD |
3577 | { |
3578 | struct e1000_hw *hw = &adapter->hw; | |
3579 | u32 vmolr; | |
3580 | ||
b980ac18 | 3581 | /* This register exists only on 82576 and newer so if we are older then |
7d5753f0 AD |
3582 | * we should exit and do nothing |
3583 | */ | |
3584 | if (hw->mac.type < e1000_82576) | |
3585 | return; | |
3586 | ||
3587 | vmolr = rd32(E1000_VMOLR(vfn)); | |
b980ac18 | 3588 | vmolr |= E1000_VMOLR_STRVLAN; /* Strip vlan tags */ |
dc1edc67 SA |
3589 | if (hw->mac.type == e1000_i350) { |
3590 | u32 dvmolr; | |
3591 | ||
3592 | dvmolr = rd32(E1000_DVMOLR(vfn)); | |
3593 | dvmolr |= E1000_DVMOLR_STRVLAN; | |
3594 | wr32(E1000_DVMOLR(vfn), dvmolr); | |
3595 | } | |
8151d294 | 3596 | if (aupe) |
b980ac18 | 3597 | vmolr |= E1000_VMOLR_AUPE; /* Accept untagged packets */ |
8151d294 WM |
3598 | else |
3599 | vmolr &= ~(E1000_VMOLR_AUPE); /* Tagged packets ONLY */ | |
7d5753f0 AD |
3600 | |
3601 | /* clear all bits that might not be set */ | |
3602 | vmolr &= ~(E1000_VMOLR_BAM | E1000_VMOLR_RSSE); | |
3603 | ||
a99955fc | 3604 | if (adapter->rss_queues > 1 && vfn == adapter->vfs_allocated_count) |
7d5753f0 | 3605 | vmolr |= E1000_VMOLR_RSSE; /* enable RSS */ |
b980ac18 | 3606 | /* for VMDq only allow the VFs and pool 0 to accept broadcast and |
7d5753f0 AD |
3607 | * multicast packets |
3608 | */ | |
3609 | if (vfn <= adapter->vfs_allocated_count) | |
b980ac18 | 3610 | vmolr |= E1000_VMOLR_BAM; /* Accept broadcast */ |
7d5753f0 AD |
3611 | |
3612 | wr32(E1000_VMOLR(vfn), vmolr); | |
3613 | } | |
3614 | ||
85b430b4 | 3615 | /** |
b980ac18 JK |
3616 | * igb_configure_rx_ring - Configure a receive ring after Reset |
3617 | * @adapter: board private structure | |
3618 | * @ring: receive ring to be configured | |
85b430b4 | 3619 | * |
b980ac18 | 3620 | * Configure the Rx unit of the MAC after a reset. |
85b430b4 | 3621 | **/ |
d7ee5b3a | 3622 | void igb_configure_rx_ring(struct igb_adapter *adapter, |
b980ac18 | 3623 | struct igb_ring *ring) |
85b430b4 AD |
3624 | { |
3625 | struct e1000_hw *hw = &adapter->hw; | |
3626 | u64 rdba = ring->dma; | |
3627 | int reg_idx = ring->reg_idx; | |
a74420e0 | 3628 | u32 srrctl = 0, rxdctl = 0; |
85b430b4 AD |
3629 | |
3630 | /* disable the queue */ | |
a74420e0 | 3631 | wr32(E1000_RXDCTL(reg_idx), 0); |
85b430b4 AD |
3632 | |
3633 | /* Set DMA base address registers */ | |
3634 | wr32(E1000_RDBAL(reg_idx), | |
3635 | rdba & 0x00000000ffffffffULL); | |
3636 | wr32(E1000_RDBAH(reg_idx), rdba >> 32); | |
3637 | wr32(E1000_RDLEN(reg_idx), | |
b980ac18 | 3638 | ring->count * sizeof(union e1000_adv_rx_desc)); |
85b430b4 AD |
3639 | |
3640 | /* initialize head and tail */ | |
fce99e34 | 3641 | ring->tail = hw->hw_addr + E1000_RDT(reg_idx); |
a74420e0 | 3642 | wr32(E1000_RDH(reg_idx), 0); |
fce99e34 | 3643 | writel(0, ring->tail); |
85b430b4 | 3644 | |
952f72a8 | 3645 | /* set descriptor configuration */ |
44390ca6 | 3646 | srrctl = IGB_RX_HDR_LEN << E1000_SRRCTL_BSIZEHDRSIZE_SHIFT; |
de78d1f9 | 3647 | srrctl |= IGB_RX_BUFSZ >> E1000_SRRCTL_BSIZEPKT_SHIFT; |
1a1c225b | 3648 | srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF; |
06218a8d | 3649 | if (hw->mac.type >= e1000_82580) |
757b77e2 | 3650 | srrctl |= E1000_SRRCTL_TIMESTAMP; |
e6bdb6fe NN |
3651 | /* Only set Drop Enable if we are supporting multiple queues */ |
3652 | if (adapter->vfs_allocated_count || adapter->num_rx_queues > 1) | |
3653 | srrctl |= E1000_SRRCTL_DROP_EN; | |
952f72a8 AD |
3654 | |
3655 | wr32(E1000_SRRCTL(reg_idx), srrctl); | |
3656 | ||
7d5753f0 | 3657 | /* set filtering for VMDQ pools */ |
8151d294 | 3658 | igb_set_vmolr(adapter, reg_idx & 0x7, true); |
7d5753f0 | 3659 | |
85b430b4 AD |
3660 | rxdctl |= IGB_RX_PTHRESH; |
3661 | rxdctl |= IGB_RX_HTHRESH << 8; | |
3662 | rxdctl |= IGB_RX_WTHRESH << 16; | |
a74420e0 AD |
3663 | |
3664 | /* enable receive descriptor fetching */ | |
3665 | rxdctl |= E1000_RXDCTL_QUEUE_ENABLE; | |
85b430b4 AD |
3666 | wr32(E1000_RXDCTL(reg_idx), rxdctl); |
3667 | } | |
3668 | ||
9d5c8243 | 3669 | /** |
b980ac18 JK |
3670 | * igb_configure_rx - Configure receive Unit after Reset |
3671 | * @adapter: board private structure | |
9d5c8243 | 3672 | * |
b980ac18 | 3673 | * Configure the Rx unit of the MAC after a reset. |
9d5c8243 AK |
3674 | **/ |
3675 | static void igb_configure_rx(struct igb_adapter *adapter) | |
3676 | { | |
9107584e | 3677 | int i; |
9d5c8243 | 3678 | |
68d480c4 AD |
3679 | /* set UTA to appropriate mode */ |
3680 | igb_set_uta(adapter); | |
3681 | ||
26ad9178 AD |
3682 | /* set the correct pool for the PF default MAC address in entry 0 */ |
3683 | igb_rar_set_qsel(adapter, adapter->hw.mac.addr, 0, | |
b980ac18 | 3684 | adapter->vfs_allocated_count); |
26ad9178 | 3685 | |
06cf2666 | 3686 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
b980ac18 JK |
3687 | * the Base and Length of the Rx Descriptor Ring |
3688 | */ | |
f9d40f6a AD |
3689 | for (i = 0; i < adapter->num_rx_queues; i++) |
3690 | igb_configure_rx_ring(adapter, adapter->rx_ring[i]); | |
9d5c8243 AK |
3691 | } |
3692 | ||
3693 | /** | |
b980ac18 JK |
3694 | * igb_free_tx_resources - Free Tx Resources per Queue |
3695 | * @tx_ring: Tx descriptor ring for a specific queue | |
9d5c8243 | 3696 | * |
b980ac18 | 3697 | * Free all transmit software resources |
9d5c8243 | 3698 | **/ |
68fd9910 | 3699 | void igb_free_tx_resources(struct igb_ring *tx_ring) |
9d5c8243 | 3700 | { |
3b644cf6 | 3701 | igb_clean_tx_ring(tx_ring); |
9d5c8243 | 3702 | |
06034649 AD |
3703 | vfree(tx_ring->tx_buffer_info); |
3704 | tx_ring->tx_buffer_info = NULL; | |
9d5c8243 | 3705 | |
439705e1 AD |
3706 | /* if not set, then don't free */ |
3707 | if (!tx_ring->desc) | |
3708 | return; | |
3709 | ||
59d71989 AD |
3710 | dma_free_coherent(tx_ring->dev, tx_ring->size, |
3711 | tx_ring->desc, tx_ring->dma); | |
9d5c8243 AK |
3712 | |
3713 | tx_ring->desc = NULL; | |
3714 | } | |
3715 | ||
3716 | /** | |
b980ac18 JK |
3717 | * igb_free_all_tx_resources - Free Tx Resources for All Queues |
3718 | * @adapter: board private structure | |
9d5c8243 | 3719 | * |
b980ac18 | 3720 | * Free all transmit software resources |
9d5c8243 AK |
3721 | **/ |
3722 | static void igb_free_all_tx_resources(struct igb_adapter *adapter) | |
3723 | { | |
3724 | int i; | |
3725 | ||
3726 | for (i = 0; i < adapter->num_tx_queues; i++) | |
17a402a0 CW |
3727 | if (adapter->tx_ring[i]) |
3728 | igb_free_tx_resources(adapter->tx_ring[i]); | |
9d5c8243 AK |
3729 | } |
3730 | ||
ebe42d16 AD |
3731 | void igb_unmap_and_free_tx_resource(struct igb_ring *ring, |
3732 | struct igb_tx_buffer *tx_buffer) | |
3733 | { | |
3734 | if (tx_buffer->skb) { | |
3735 | dev_kfree_skb_any(tx_buffer->skb); | |
c9f14bf3 | 3736 | if (dma_unmap_len(tx_buffer, len)) |
ebe42d16 | 3737 | dma_unmap_single(ring->dev, |
c9f14bf3 AD |
3738 | dma_unmap_addr(tx_buffer, dma), |
3739 | dma_unmap_len(tx_buffer, len), | |
ebe42d16 | 3740 | DMA_TO_DEVICE); |
c9f14bf3 | 3741 | } else if (dma_unmap_len(tx_buffer, len)) { |
ebe42d16 | 3742 | dma_unmap_page(ring->dev, |
c9f14bf3 AD |
3743 | dma_unmap_addr(tx_buffer, dma), |
3744 | dma_unmap_len(tx_buffer, len), | |
ebe42d16 AD |
3745 | DMA_TO_DEVICE); |
3746 | } | |
3747 | tx_buffer->next_to_watch = NULL; | |
3748 | tx_buffer->skb = NULL; | |
c9f14bf3 | 3749 | dma_unmap_len_set(tx_buffer, len, 0); |
ebe42d16 | 3750 | /* buffer_info must be completely set up in the transmit path */ |
9d5c8243 AK |
3751 | } |
3752 | ||
3753 | /** | |
b980ac18 JK |
3754 | * igb_clean_tx_ring - Free Tx Buffers |
3755 | * @tx_ring: ring to be cleaned | |
9d5c8243 | 3756 | **/ |
3b644cf6 | 3757 | static void igb_clean_tx_ring(struct igb_ring *tx_ring) |
9d5c8243 | 3758 | { |
06034649 | 3759 | struct igb_tx_buffer *buffer_info; |
9d5c8243 | 3760 | unsigned long size; |
6ad4edfc | 3761 | u16 i; |
9d5c8243 | 3762 | |
06034649 | 3763 | if (!tx_ring->tx_buffer_info) |
9d5c8243 AK |
3764 | return; |
3765 | /* Free all the Tx ring sk_buffs */ | |
3766 | ||
3767 | for (i = 0; i < tx_ring->count; i++) { | |
06034649 | 3768 | buffer_info = &tx_ring->tx_buffer_info[i]; |
80785298 | 3769 | igb_unmap_and_free_tx_resource(tx_ring, buffer_info); |
9d5c8243 AK |
3770 | } |
3771 | ||
dad8a3b3 JF |
3772 | netdev_tx_reset_queue(txring_txq(tx_ring)); |
3773 | ||
06034649 AD |
3774 | size = sizeof(struct igb_tx_buffer) * tx_ring->count; |
3775 | memset(tx_ring->tx_buffer_info, 0, size); | |
9d5c8243 AK |
3776 | |
3777 | /* Zero out the descriptor ring */ | |
9d5c8243 AK |
3778 | memset(tx_ring->desc, 0, tx_ring->size); |
3779 | ||
3780 | tx_ring->next_to_use = 0; | |
3781 | tx_ring->next_to_clean = 0; | |
9d5c8243 AK |
3782 | } |
3783 | ||
3784 | /** | |
b980ac18 JK |
3785 | * igb_clean_all_tx_rings - Free Tx Buffers for all queues |
3786 | * @adapter: board private structure | |
9d5c8243 AK |
3787 | **/ |
3788 | static void igb_clean_all_tx_rings(struct igb_adapter *adapter) | |
3789 | { | |
3790 | int i; | |
3791 | ||
3792 | for (i = 0; i < adapter->num_tx_queues; i++) | |
17a402a0 CW |
3793 | if (adapter->tx_ring[i]) |
3794 | igb_clean_tx_ring(adapter->tx_ring[i]); | |
9d5c8243 AK |
3795 | } |
3796 | ||
3797 | /** | |
b980ac18 JK |
3798 | * igb_free_rx_resources - Free Rx Resources |
3799 | * @rx_ring: ring to clean the resources from | |
9d5c8243 | 3800 | * |
b980ac18 | 3801 | * Free all receive software resources |
9d5c8243 | 3802 | **/ |
68fd9910 | 3803 | void igb_free_rx_resources(struct igb_ring *rx_ring) |
9d5c8243 | 3804 | { |
3b644cf6 | 3805 | igb_clean_rx_ring(rx_ring); |
9d5c8243 | 3806 | |
06034649 AD |
3807 | vfree(rx_ring->rx_buffer_info); |
3808 | rx_ring->rx_buffer_info = NULL; | |
9d5c8243 | 3809 | |
439705e1 AD |
3810 | /* if not set, then don't free */ |
3811 | if (!rx_ring->desc) | |
3812 | return; | |
3813 | ||
59d71989 AD |
3814 | dma_free_coherent(rx_ring->dev, rx_ring->size, |
3815 | rx_ring->desc, rx_ring->dma); | |
9d5c8243 AK |
3816 | |
3817 | rx_ring->desc = NULL; | |
3818 | } | |
3819 | ||
3820 | /** | |
b980ac18 JK |
3821 | * igb_free_all_rx_resources - Free Rx Resources for All Queues |
3822 | * @adapter: board private structure | |
9d5c8243 | 3823 | * |
b980ac18 | 3824 | * Free all receive software resources |
9d5c8243 AK |
3825 | **/ |
3826 | static void igb_free_all_rx_resources(struct igb_adapter *adapter) | |
3827 | { | |
3828 | int i; | |
3829 | ||
3830 | for (i = 0; i < adapter->num_rx_queues; i++) | |
17a402a0 CW |
3831 | if (adapter->rx_ring[i]) |
3832 | igb_free_rx_resources(adapter->rx_ring[i]); | |
9d5c8243 AK |
3833 | } |
3834 | ||
3835 | /** | |
b980ac18 JK |
3836 | * igb_clean_rx_ring - Free Rx Buffers per Queue |
3837 | * @rx_ring: ring to free buffers from | |
9d5c8243 | 3838 | **/ |
3b644cf6 | 3839 | static void igb_clean_rx_ring(struct igb_ring *rx_ring) |
9d5c8243 | 3840 | { |
9d5c8243 | 3841 | unsigned long size; |
c023cd88 | 3842 | u16 i; |
9d5c8243 | 3843 | |
1a1c225b AD |
3844 | if (rx_ring->skb) |
3845 | dev_kfree_skb(rx_ring->skb); | |
3846 | rx_ring->skb = NULL; | |
3847 | ||
06034649 | 3848 | if (!rx_ring->rx_buffer_info) |
9d5c8243 | 3849 | return; |
439705e1 | 3850 | |
9d5c8243 AK |
3851 | /* Free all the Rx ring sk_buffs */ |
3852 | for (i = 0; i < rx_ring->count; i++) { | |
06034649 | 3853 | struct igb_rx_buffer *buffer_info = &rx_ring->rx_buffer_info[i]; |
9d5c8243 | 3854 | |
cbc8e55f AD |
3855 | if (!buffer_info->page) |
3856 | continue; | |
3857 | ||
3858 | dma_unmap_page(rx_ring->dev, | |
3859 | buffer_info->dma, | |
3860 | PAGE_SIZE, | |
3861 | DMA_FROM_DEVICE); | |
3862 | __free_page(buffer_info->page); | |
3863 | ||
1a1c225b | 3864 | buffer_info->page = NULL; |
9d5c8243 AK |
3865 | } |
3866 | ||
06034649 AD |
3867 | size = sizeof(struct igb_rx_buffer) * rx_ring->count; |
3868 | memset(rx_ring->rx_buffer_info, 0, size); | |
9d5c8243 AK |
3869 | |
3870 | /* Zero out the descriptor ring */ | |
3871 | memset(rx_ring->desc, 0, rx_ring->size); | |
3872 | ||
cbc8e55f | 3873 | rx_ring->next_to_alloc = 0; |
9d5c8243 AK |
3874 | rx_ring->next_to_clean = 0; |
3875 | rx_ring->next_to_use = 0; | |
9d5c8243 AK |
3876 | } |
3877 | ||
3878 | /** | |
b980ac18 JK |
3879 | * igb_clean_all_rx_rings - Free Rx Buffers for all queues |
3880 | * @adapter: board private structure | |
9d5c8243 AK |
3881 | **/ |
3882 | static void igb_clean_all_rx_rings(struct igb_adapter *adapter) | |
3883 | { | |
3884 | int i; | |
3885 | ||
3886 | for (i = 0; i < adapter->num_rx_queues; i++) | |
17a402a0 CW |
3887 | if (adapter->rx_ring[i]) |
3888 | igb_clean_rx_ring(adapter->rx_ring[i]); | |
9d5c8243 AK |
3889 | } |
3890 | ||
3891 | /** | |
b980ac18 JK |
3892 | * igb_set_mac - Change the Ethernet Address of the NIC |
3893 | * @netdev: network interface device structure | |
3894 | * @p: pointer to an address structure | |
9d5c8243 | 3895 | * |
b980ac18 | 3896 | * Returns 0 on success, negative on failure |
9d5c8243 AK |
3897 | **/ |
3898 | static int igb_set_mac(struct net_device *netdev, void *p) | |
3899 | { | |
3900 | struct igb_adapter *adapter = netdev_priv(netdev); | |
28b0759c | 3901 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 AK |
3902 | struct sockaddr *addr = p; |
3903 | ||
3904 | if (!is_valid_ether_addr(addr->sa_data)) | |
3905 | return -EADDRNOTAVAIL; | |
3906 | ||
3907 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
28b0759c | 3908 | memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); |
9d5c8243 | 3909 | |
26ad9178 AD |
3910 | /* set the correct pool for the new PF MAC address in entry 0 */ |
3911 | igb_rar_set_qsel(adapter, hw->mac.addr, 0, | |
b980ac18 | 3912 | adapter->vfs_allocated_count); |
e1739522 | 3913 | |
9d5c8243 AK |
3914 | return 0; |
3915 | } | |
3916 | ||
3917 | /** | |
b980ac18 JK |
3918 | * igb_write_mc_addr_list - write multicast addresses to MTA |
3919 | * @netdev: network interface device structure | |
9d5c8243 | 3920 | * |
b980ac18 JK |
3921 | * Writes multicast address list to the MTA hash table. |
3922 | * Returns: -ENOMEM on failure | |
3923 | * 0 on no addresses written | |
3924 | * X on writing X addresses to MTA | |
9d5c8243 | 3925 | **/ |
68d480c4 | 3926 | static int igb_write_mc_addr_list(struct net_device *netdev) |
9d5c8243 AK |
3927 | { |
3928 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3929 | struct e1000_hw *hw = &adapter->hw; | |
22bedad3 | 3930 | struct netdev_hw_addr *ha; |
68d480c4 | 3931 | u8 *mta_list; |
9d5c8243 AK |
3932 | int i; |
3933 | ||
4cd24eaf | 3934 | if (netdev_mc_empty(netdev)) { |
68d480c4 AD |
3935 | /* nothing to program, so clear mc list */ |
3936 | igb_update_mc_addr_list(hw, NULL, 0); | |
3937 | igb_restore_vf_multicasts(adapter); | |
3938 | return 0; | |
3939 | } | |
9d5c8243 | 3940 | |
4cd24eaf | 3941 | mta_list = kzalloc(netdev_mc_count(netdev) * 6, GFP_ATOMIC); |
68d480c4 AD |
3942 | if (!mta_list) |
3943 | return -ENOMEM; | |
ff41f8dc | 3944 | |
68d480c4 | 3945 | /* The shared function expects a packed array of only addresses. */ |
48e2f183 | 3946 | i = 0; |
22bedad3 JP |
3947 | netdev_for_each_mc_addr(ha, netdev) |
3948 | memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN); | |
68d480c4 | 3949 | |
68d480c4 AD |
3950 | igb_update_mc_addr_list(hw, mta_list, i); |
3951 | kfree(mta_list); | |
3952 | ||
4cd24eaf | 3953 | return netdev_mc_count(netdev); |
68d480c4 AD |
3954 | } |
3955 | ||
3956 | /** | |
b980ac18 JK |
3957 | * igb_write_uc_addr_list - write unicast addresses to RAR table |
3958 | * @netdev: network interface device structure | |
68d480c4 | 3959 | * |
b980ac18 JK |
3960 | * Writes unicast address list to the RAR table. |
3961 | * Returns: -ENOMEM on failure/insufficient address space | |
3962 | * 0 on no addresses written | |
3963 | * X on writing X addresses to the RAR table | |
68d480c4 AD |
3964 | **/ |
3965 | static int igb_write_uc_addr_list(struct net_device *netdev) | |
3966 | { | |
3967 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3968 | struct e1000_hw *hw = &adapter->hw; | |
3969 | unsigned int vfn = adapter->vfs_allocated_count; | |
3970 | unsigned int rar_entries = hw->mac.rar_entry_count - (vfn + 1); | |
3971 | int count = 0; | |
3972 | ||
3973 | /* return ENOMEM indicating insufficient memory for addresses */ | |
32e7bfc4 | 3974 | if (netdev_uc_count(netdev) > rar_entries) |
68d480c4 | 3975 | return -ENOMEM; |
9d5c8243 | 3976 | |
32e7bfc4 | 3977 | if (!netdev_uc_empty(netdev) && rar_entries) { |
ff41f8dc | 3978 | struct netdev_hw_addr *ha; |
32e7bfc4 JP |
3979 | |
3980 | netdev_for_each_uc_addr(ha, netdev) { | |
ff41f8dc AD |
3981 | if (!rar_entries) |
3982 | break; | |
26ad9178 | 3983 | igb_rar_set_qsel(adapter, ha->addr, |
b980ac18 JK |
3984 | rar_entries--, |
3985 | vfn); | |
68d480c4 | 3986 | count++; |
ff41f8dc AD |
3987 | } |
3988 | } | |
3989 | /* write the addresses in reverse order to avoid write combining */ | |
3990 | for (; rar_entries > 0 ; rar_entries--) { | |
3991 | wr32(E1000_RAH(rar_entries), 0); | |
3992 | wr32(E1000_RAL(rar_entries), 0); | |
3993 | } | |
3994 | wrfl(); | |
3995 | ||
68d480c4 AD |
3996 | return count; |
3997 | } | |
3998 | ||
3999 | /** | |
b980ac18 JK |
4000 | * igb_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set |
4001 | * @netdev: network interface device structure | |
68d480c4 | 4002 | * |
b980ac18 JK |
4003 | * The set_rx_mode entry point is called whenever the unicast or multicast |
4004 | * address lists or the network interface flags are updated. This routine is | |
4005 | * responsible for configuring the hardware for proper unicast, multicast, | |
4006 | * promiscuous mode, and all-multi behavior. | |
68d480c4 AD |
4007 | **/ |
4008 | static void igb_set_rx_mode(struct net_device *netdev) | |
4009 | { | |
4010 | struct igb_adapter *adapter = netdev_priv(netdev); | |
4011 | struct e1000_hw *hw = &adapter->hw; | |
4012 | unsigned int vfn = adapter->vfs_allocated_count; | |
4013 | u32 rctl, vmolr = 0; | |
4014 | int count; | |
4015 | ||
4016 | /* Check for Promiscuous and All Multicast modes */ | |
4017 | rctl = rd32(E1000_RCTL); | |
4018 | ||
4019 | /* clear the effected bits */ | |
4020 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE | E1000_RCTL_VFE); | |
4021 | ||
4022 | if (netdev->flags & IFF_PROMISC) { | |
6f3dc319 | 4023 | /* retain VLAN HW filtering if in VT mode */ |
7e44892c | 4024 | if (adapter->vfs_allocated_count) |
6f3dc319 | 4025 | rctl |= E1000_RCTL_VFE; |
68d480c4 AD |
4026 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
4027 | vmolr |= (E1000_VMOLR_ROPE | E1000_VMOLR_MPME); | |
4028 | } else { | |
4029 | if (netdev->flags & IFF_ALLMULTI) { | |
4030 | rctl |= E1000_RCTL_MPE; | |
4031 | vmolr |= E1000_VMOLR_MPME; | |
4032 | } else { | |
b980ac18 | 4033 | /* Write addresses to the MTA, if the attempt fails |
25985edc | 4034 | * then we should just turn on promiscuous mode so |
68d480c4 AD |
4035 | * that we can at least receive multicast traffic |
4036 | */ | |
4037 | count = igb_write_mc_addr_list(netdev); | |
4038 | if (count < 0) { | |
4039 | rctl |= E1000_RCTL_MPE; | |
4040 | vmolr |= E1000_VMOLR_MPME; | |
4041 | } else if (count) { | |
4042 | vmolr |= E1000_VMOLR_ROMPE; | |
4043 | } | |
4044 | } | |
b980ac18 | 4045 | /* Write addresses to available RAR registers, if there is not |
68d480c4 | 4046 | * sufficient space to store all the addresses then enable |
25985edc | 4047 | * unicast promiscuous mode |
68d480c4 AD |
4048 | */ |
4049 | count = igb_write_uc_addr_list(netdev); | |
4050 | if (count < 0) { | |
4051 | rctl |= E1000_RCTL_UPE; | |
4052 | vmolr |= E1000_VMOLR_ROPE; | |
4053 | } | |
4054 | rctl |= E1000_RCTL_VFE; | |
28fc06f5 | 4055 | } |
68d480c4 | 4056 | wr32(E1000_RCTL, rctl); |
28fc06f5 | 4057 | |
b980ac18 | 4058 | /* In order to support SR-IOV and eventually VMDq it is necessary to set |
68d480c4 AD |
4059 | * the VMOLR to enable the appropriate modes. Without this workaround |
4060 | * we will have issues with VLAN tag stripping not being done for frames | |
4061 | * that are only arriving because we are the default pool | |
4062 | */ | |
f96a8a0b | 4063 | if ((hw->mac.type < e1000_82576) || (hw->mac.type > e1000_i350)) |
28fc06f5 | 4064 | return; |
9d5c8243 | 4065 | |
68d480c4 | 4066 | vmolr |= rd32(E1000_VMOLR(vfn)) & |
b980ac18 | 4067 | ~(E1000_VMOLR_ROPE | E1000_VMOLR_MPME | E1000_VMOLR_ROMPE); |
68d480c4 | 4068 | wr32(E1000_VMOLR(vfn), vmolr); |
28fc06f5 | 4069 | igb_restore_vf_multicasts(adapter); |
9d5c8243 AK |
4070 | } |
4071 | ||
13800469 GR |
4072 | static void igb_check_wvbr(struct igb_adapter *adapter) |
4073 | { | |
4074 | struct e1000_hw *hw = &adapter->hw; | |
4075 | u32 wvbr = 0; | |
4076 | ||
4077 | switch (hw->mac.type) { | |
4078 | case e1000_82576: | |
4079 | case e1000_i350: | |
81ad807b CW |
4080 | wvbr = rd32(E1000_WVBR); |
4081 | if (!wvbr) | |
13800469 GR |
4082 | return; |
4083 | break; | |
4084 | default: | |
4085 | break; | |
4086 | } | |
4087 | ||
4088 | adapter->wvbr |= wvbr; | |
4089 | } | |
4090 | ||
4091 | #define IGB_STAGGERED_QUEUE_OFFSET 8 | |
4092 | ||
4093 | static void igb_spoof_check(struct igb_adapter *adapter) | |
4094 | { | |
4095 | int j; | |
4096 | ||
4097 | if (!adapter->wvbr) | |
4098 | return; | |
4099 | ||
9005df38 | 4100 | for (j = 0; j < adapter->vfs_allocated_count; j++) { |
13800469 GR |
4101 | if (adapter->wvbr & (1 << j) || |
4102 | adapter->wvbr & (1 << (j + IGB_STAGGERED_QUEUE_OFFSET))) { | |
4103 | dev_warn(&adapter->pdev->dev, | |
4104 | "Spoof event(s) detected on VF %d\n", j); | |
4105 | adapter->wvbr &= | |
4106 | ~((1 << j) | | |
4107 | (1 << (j + IGB_STAGGERED_QUEUE_OFFSET))); | |
4108 | } | |
4109 | } | |
4110 | } | |
4111 | ||
9d5c8243 | 4112 | /* Need to wait a few seconds after link up to get diagnostic information from |
b980ac18 JK |
4113 | * the phy |
4114 | */ | |
9d5c8243 AK |
4115 | static void igb_update_phy_info(unsigned long data) |
4116 | { | |
4117 | struct igb_adapter *adapter = (struct igb_adapter *) data; | |
f5f4cf08 | 4118 | igb_get_phy_info(&adapter->hw); |
9d5c8243 AK |
4119 | } |
4120 | ||
4d6b725e | 4121 | /** |
b980ac18 JK |
4122 | * igb_has_link - check shared code for link and determine up/down |
4123 | * @adapter: pointer to driver private info | |
4d6b725e | 4124 | **/ |
3145535a | 4125 | bool igb_has_link(struct igb_adapter *adapter) |
4d6b725e AD |
4126 | { |
4127 | struct e1000_hw *hw = &adapter->hw; | |
4128 | bool link_active = false; | |
4d6b725e AD |
4129 | |
4130 | /* get_link_status is set on LSC (link status) interrupt or | |
4131 | * rx sequence error interrupt. get_link_status will stay | |
4132 | * false until the e1000_check_for_link establishes link | |
4133 | * for copper adapters ONLY | |
4134 | */ | |
4135 | switch (hw->phy.media_type) { | |
4136 | case e1000_media_type_copper: | |
e5c3370f AA |
4137 | if (!hw->mac.get_link_status) |
4138 | return true; | |
4d6b725e | 4139 | case e1000_media_type_internal_serdes: |
e5c3370f AA |
4140 | hw->mac.ops.check_for_link(hw); |
4141 | link_active = !hw->mac.get_link_status; | |
4d6b725e AD |
4142 | break; |
4143 | default: | |
4144 | case e1000_media_type_unknown: | |
4145 | break; | |
4146 | } | |
4147 | ||
aa9b8cc4 AA |
4148 | if (((hw->mac.type == e1000_i210) || |
4149 | (hw->mac.type == e1000_i211)) && | |
4150 | (hw->phy.id == I210_I_PHY_ID)) { | |
4151 | if (!netif_carrier_ok(adapter->netdev)) { | |
4152 | adapter->flags &= ~IGB_FLAG_NEED_LINK_UPDATE; | |
4153 | } else if (!(adapter->flags & IGB_FLAG_NEED_LINK_UPDATE)) { | |
4154 | adapter->flags |= IGB_FLAG_NEED_LINK_UPDATE; | |
4155 | adapter->link_check_timeout = jiffies; | |
4156 | } | |
4157 | } | |
4158 | ||
4d6b725e AD |
4159 | return link_active; |
4160 | } | |
4161 | ||
563988dc SA |
4162 | static bool igb_thermal_sensor_event(struct e1000_hw *hw, u32 event) |
4163 | { | |
4164 | bool ret = false; | |
4165 | u32 ctrl_ext, thstat; | |
4166 | ||
f96a8a0b | 4167 | /* check for thermal sensor event on i350 copper only */ |
563988dc SA |
4168 | if (hw->mac.type == e1000_i350) { |
4169 | thstat = rd32(E1000_THSTAT); | |
4170 | ctrl_ext = rd32(E1000_CTRL_EXT); | |
4171 | ||
4172 | if ((hw->phy.media_type == e1000_media_type_copper) && | |
5c17a203 | 4173 | !(ctrl_ext & E1000_CTRL_EXT_LINK_MODE_SGMII)) |
563988dc | 4174 | ret = !!(thstat & event); |
563988dc SA |
4175 | } |
4176 | ||
4177 | return ret; | |
4178 | } | |
4179 | ||
1516f0a6 CW |
4180 | /** |
4181 | * igb_check_lvmmc - check for malformed packets received | |
4182 | * and indicated in LVMMC register | |
4183 | * @adapter: pointer to adapter | |
4184 | **/ | |
4185 | static void igb_check_lvmmc(struct igb_adapter *adapter) | |
4186 | { | |
4187 | struct e1000_hw *hw = &adapter->hw; | |
4188 | u32 lvmmc; | |
4189 | ||
4190 | lvmmc = rd32(E1000_LVMMC); | |
4191 | if (lvmmc) { | |
4192 | if (unlikely(net_ratelimit())) { | |
4193 | netdev_warn(adapter->netdev, | |
4194 | "malformed Tx packet detected and dropped, LVMMC:0x%08x\n", | |
4195 | lvmmc); | |
4196 | } | |
4197 | } | |
4198 | } | |
4199 | ||
9d5c8243 | 4200 | /** |
b980ac18 JK |
4201 | * igb_watchdog - Timer Call-back |
4202 | * @data: pointer to adapter cast into an unsigned long | |
9d5c8243 AK |
4203 | **/ |
4204 | static void igb_watchdog(unsigned long data) | |
4205 | { | |
4206 | struct igb_adapter *adapter = (struct igb_adapter *)data; | |
4207 | /* Do the rest outside of interrupt context */ | |
4208 | schedule_work(&adapter->watchdog_task); | |
4209 | } | |
4210 | ||
4211 | static void igb_watchdog_task(struct work_struct *work) | |
4212 | { | |
4213 | struct igb_adapter *adapter = container_of(work, | |
b980ac18 JK |
4214 | struct igb_adapter, |
4215 | watchdog_task); | |
9d5c8243 | 4216 | struct e1000_hw *hw = &adapter->hw; |
c0ba4778 | 4217 | struct e1000_phy_info *phy = &hw->phy; |
9d5c8243 | 4218 | struct net_device *netdev = adapter->netdev; |
563988dc | 4219 | u32 link; |
7a6ea550 | 4220 | int i; |
56cec249 | 4221 | u32 connsw; |
9d5c8243 | 4222 | |
4d6b725e | 4223 | link = igb_has_link(adapter); |
aa9b8cc4 AA |
4224 | |
4225 | if (adapter->flags & IGB_FLAG_NEED_LINK_UPDATE) { | |
4226 | if (time_after(jiffies, (adapter->link_check_timeout + HZ))) | |
4227 | adapter->flags &= ~IGB_FLAG_NEED_LINK_UPDATE; | |
4228 | else | |
4229 | link = false; | |
4230 | } | |
4231 | ||
56cec249 CW |
4232 | /* Force link down if we have fiber to swap to */ |
4233 | if (adapter->flags & IGB_FLAG_MAS_ENABLE) { | |
4234 | if (hw->phy.media_type == e1000_media_type_copper) { | |
4235 | connsw = rd32(E1000_CONNSW); | |
4236 | if (!(connsw & E1000_CONNSW_AUTOSENSE_EN)) | |
4237 | link = 0; | |
4238 | } | |
4239 | } | |
9d5c8243 | 4240 | if (link) { |
2bdfc4e2 CW |
4241 | /* Perform a reset if the media type changed. */ |
4242 | if (hw->dev_spec._82575.media_changed) { | |
4243 | hw->dev_spec._82575.media_changed = false; | |
4244 | adapter->flags |= IGB_FLAG_MEDIA_RESET; | |
4245 | igb_reset(adapter); | |
4246 | } | |
749ab2cd YZ |
4247 | /* Cancel scheduled suspend requests. */ |
4248 | pm_runtime_resume(netdev->dev.parent); | |
4249 | ||
9d5c8243 AK |
4250 | if (!netif_carrier_ok(netdev)) { |
4251 | u32 ctrl; | |
9005df38 | 4252 | |
330a6d6a | 4253 | hw->mac.ops.get_speed_and_duplex(hw, |
b980ac18 JK |
4254 | &adapter->link_speed, |
4255 | &adapter->link_duplex); | |
9d5c8243 AK |
4256 | |
4257 | ctrl = rd32(E1000_CTRL); | |
527d47c1 | 4258 | /* Links status message must follow this format */ |
c75c4edf CW |
4259 | netdev_info(netdev, |
4260 | "igb: %s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n", | |
559e9c49 AD |
4261 | netdev->name, |
4262 | adapter->link_speed, | |
4263 | adapter->link_duplex == FULL_DUPLEX ? | |
876d2d6f JK |
4264 | "Full" : "Half", |
4265 | (ctrl & E1000_CTRL_TFCE) && | |
4266 | (ctrl & E1000_CTRL_RFCE) ? "RX/TX" : | |
4267 | (ctrl & E1000_CTRL_RFCE) ? "RX" : | |
4268 | (ctrl & E1000_CTRL_TFCE) ? "TX" : "None"); | |
9d5c8243 | 4269 | |
f4c01e96 CW |
4270 | /* disable EEE if enabled */ |
4271 | if ((adapter->flags & IGB_FLAG_EEE) && | |
4272 | (adapter->link_duplex == HALF_DUPLEX)) { | |
4273 | dev_info(&adapter->pdev->dev, | |
4274 | "EEE Disabled: unsupported at half duplex. Re-enable using ethtool when at full duplex.\n"); | |
4275 | adapter->hw.dev_spec._82575.eee_disable = true; | |
4276 | adapter->flags &= ~IGB_FLAG_EEE; | |
4277 | } | |
4278 | ||
c0ba4778 KS |
4279 | /* check if SmartSpeed worked */ |
4280 | igb_check_downshift(hw); | |
4281 | if (phy->speed_downgraded) | |
4282 | netdev_warn(netdev, "Link Speed was downgraded by SmartSpeed\n"); | |
4283 | ||
563988dc | 4284 | /* check for thermal sensor event */ |
876d2d6f | 4285 | if (igb_thermal_sensor_event(hw, |
d34a15ab | 4286 | E1000_THSTAT_LINK_THROTTLE)) |
c75c4edf | 4287 | netdev_info(netdev, "The network adapter link speed was downshifted because it overheated\n"); |
563988dc | 4288 | |
d07f3e37 | 4289 | /* adjust timeout factor according to speed/duplex */ |
9d5c8243 AK |
4290 | adapter->tx_timeout_factor = 1; |
4291 | switch (adapter->link_speed) { | |
4292 | case SPEED_10: | |
9d5c8243 AK |
4293 | adapter->tx_timeout_factor = 14; |
4294 | break; | |
4295 | case SPEED_100: | |
9d5c8243 AK |
4296 | /* maybe add some timeout factor ? */ |
4297 | break; | |
4298 | } | |
4299 | ||
4300 | netif_carrier_on(netdev); | |
9d5c8243 | 4301 | |
4ae196df | 4302 | igb_ping_all_vfs(adapter); |
17dc566c | 4303 | igb_check_vf_rate_limit(adapter); |
4ae196df | 4304 | |
4b1a9877 | 4305 | /* link state has changed, schedule phy info update */ |
9d5c8243 AK |
4306 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
4307 | mod_timer(&adapter->phy_info_timer, | |
4308 | round_jiffies(jiffies + 2 * HZ)); | |
4309 | } | |
4310 | } else { | |
4311 | if (netif_carrier_ok(netdev)) { | |
4312 | adapter->link_speed = 0; | |
4313 | adapter->link_duplex = 0; | |
563988dc SA |
4314 | |
4315 | /* check for thermal sensor event */ | |
876d2d6f JK |
4316 | if (igb_thermal_sensor_event(hw, |
4317 | E1000_THSTAT_PWR_DOWN)) { | |
c75c4edf | 4318 | netdev_err(netdev, "The network adapter was stopped because it overheated\n"); |
7ef5ed1c | 4319 | } |
563988dc | 4320 | |
527d47c1 | 4321 | /* Links status message must follow this format */ |
c75c4edf | 4322 | netdev_info(netdev, "igb: %s NIC Link is Down\n", |
527d47c1 | 4323 | netdev->name); |
9d5c8243 | 4324 | netif_carrier_off(netdev); |
4b1a9877 | 4325 | |
4ae196df AD |
4326 | igb_ping_all_vfs(adapter); |
4327 | ||
4b1a9877 | 4328 | /* link state has changed, schedule phy info update */ |
9d5c8243 AK |
4329 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
4330 | mod_timer(&adapter->phy_info_timer, | |
4331 | round_jiffies(jiffies + 2 * HZ)); | |
749ab2cd | 4332 | |
56cec249 CW |
4333 | /* link is down, time to check for alternate media */ |
4334 | if (adapter->flags & IGB_FLAG_MAS_ENABLE) { | |
4335 | igb_check_swap_media(adapter); | |
4336 | if (adapter->flags & IGB_FLAG_MEDIA_RESET) { | |
4337 | schedule_work(&adapter->reset_task); | |
4338 | /* return immediately */ | |
4339 | return; | |
4340 | } | |
4341 | } | |
749ab2cd YZ |
4342 | pm_schedule_suspend(netdev->dev.parent, |
4343 | MSEC_PER_SEC * 5); | |
56cec249 CW |
4344 | |
4345 | /* also check for alternate media here */ | |
4346 | } else if (!netif_carrier_ok(netdev) && | |
4347 | (adapter->flags & IGB_FLAG_MAS_ENABLE)) { | |
4348 | igb_check_swap_media(adapter); | |
4349 | if (adapter->flags & IGB_FLAG_MEDIA_RESET) { | |
4350 | schedule_work(&adapter->reset_task); | |
4351 | /* return immediately */ | |
4352 | return; | |
4353 | } | |
9d5c8243 AK |
4354 | } |
4355 | } | |
4356 | ||
12dcd86b ED |
4357 | spin_lock(&adapter->stats64_lock); |
4358 | igb_update_stats(adapter, &adapter->stats64); | |
4359 | spin_unlock(&adapter->stats64_lock); | |
9d5c8243 | 4360 | |
dbabb065 | 4361 | for (i = 0; i < adapter->num_tx_queues; i++) { |
3025a446 | 4362 | struct igb_ring *tx_ring = adapter->tx_ring[i]; |
dbabb065 | 4363 | if (!netif_carrier_ok(netdev)) { |
9d5c8243 AK |
4364 | /* We've lost link, so the controller stops DMA, |
4365 | * but we've got queued Tx work that's never going | |
4366 | * to get done, so reset controller to flush Tx. | |
b980ac18 JK |
4367 | * (Do the reset outside of interrupt context). |
4368 | */ | |
dbabb065 AD |
4369 | if (igb_desc_unused(tx_ring) + 1 < tx_ring->count) { |
4370 | adapter->tx_timeout_count++; | |
4371 | schedule_work(&adapter->reset_task); | |
4372 | /* return immediately since reset is imminent */ | |
4373 | return; | |
4374 | } | |
9d5c8243 | 4375 | } |
9d5c8243 | 4376 | |
dbabb065 | 4377 | /* Force detection of hung controller every watchdog period */ |
6d095fa8 | 4378 | set_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags); |
dbabb065 | 4379 | } |
f7ba205e | 4380 | |
b980ac18 | 4381 | /* Cause software interrupt to ensure Rx ring is cleaned */ |
cd14ef54 | 4382 | if (adapter->flags & IGB_FLAG_HAS_MSIX) { |
047e0030 | 4383 | u32 eics = 0; |
9005df38 | 4384 | |
0d1ae7f4 AD |
4385 | for (i = 0; i < adapter->num_q_vectors; i++) |
4386 | eics |= adapter->q_vector[i]->eims_value; | |
7a6ea550 AD |
4387 | wr32(E1000_EICS, eics); |
4388 | } else { | |
4389 | wr32(E1000_ICS, E1000_ICS_RXDMT0); | |
4390 | } | |
9d5c8243 | 4391 | |
13800469 | 4392 | igb_spoof_check(adapter); |
fc580751 | 4393 | igb_ptp_rx_hang(adapter); |
13800469 | 4394 | |
1516f0a6 CW |
4395 | /* Check LVMMC register on i350/i354 only */ |
4396 | if ((adapter->hw.mac.type == e1000_i350) || | |
4397 | (adapter->hw.mac.type == e1000_i354)) | |
4398 | igb_check_lvmmc(adapter); | |
4399 | ||
9d5c8243 | 4400 | /* Reset the timer */ |
aa9b8cc4 AA |
4401 | if (!test_bit(__IGB_DOWN, &adapter->state)) { |
4402 | if (adapter->flags & IGB_FLAG_NEED_LINK_UPDATE) | |
4403 | mod_timer(&adapter->watchdog_timer, | |
4404 | round_jiffies(jiffies + HZ)); | |
4405 | else | |
4406 | mod_timer(&adapter->watchdog_timer, | |
4407 | round_jiffies(jiffies + 2 * HZ)); | |
4408 | } | |
9d5c8243 AK |
4409 | } |
4410 | ||
4411 | enum latency_range { | |
4412 | lowest_latency = 0, | |
4413 | low_latency = 1, | |
4414 | bulk_latency = 2, | |
4415 | latency_invalid = 255 | |
4416 | }; | |
4417 | ||
6eb5a7f1 | 4418 | /** |
b980ac18 JK |
4419 | * igb_update_ring_itr - update the dynamic ITR value based on packet size |
4420 | * @q_vector: pointer to q_vector | |
6eb5a7f1 | 4421 | * |
b980ac18 JK |
4422 | * Stores a new ITR value based on strictly on packet size. This |
4423 | * algorithm is less sophisticated than that used in igb_update_itr, | |
4424 | * due to the difficulty of synchronizing statistics across multiple | |
4425 | * receive rings. The divisors and thresholds used by this function | |
4426 | * were determined based on theoretical maximum wire speed and testing | |
4427 | * data, in order to minimize response time while increasing bulk | |
4428 | * throughput. | |
406d4965 | 4429 | * This functionality is controlled by ethtool's coalescing settings. |
b980ac18 JK |
4430 | * NOTE: This function is called only when operating in a multiqueue |
4431 | * receive environment. | |
6eb5a7f1 | 4432 | **/ |
047e0030 | 4433 | static void igb_update_ring_itr(struct igb_q_vector *q_vector) |
9d5c8243 | 4434 | { |
047e0030 | 4435 | int new_val = q_vector->itr_val; |
6eb5a7f1 | 4436 | int avg_wire_size = 0; |
047e0030 | 4437 | struct igb_adapter *adapter = q_vector->adapter; |
12dcd86b | 4438 | unsigned int packets; |
9d5c8243 | 4439 | |
6eb5a7f1 AD |
4440 | /* For non-gigabit speeds, just fix the interrupt rate at 4000 |
4441 | * ints/sec - ITR timer value of 120 ticks. | |
4442 | */ | |
4443 | if (adapter->link_speed != SPEED_1000) { | |
0ba82994 | 4444 | new_val = IGB_4K_ITR; |
6eb5a7f1 | 4445 | goto set_itr_val; |
9d5c8243 | 4446 | } |
047e0030 | 4447 | |
0ba82994 AD |
4448 | packets = q_vector->rx.total_packets; |
4449 | if (packets) | |
4450 | avg_wire_size = q_vector->rx.total_bytes / packets; | |
047e0030 | 4451 | |
0ba82994 AD |
4452 | packets = q_vector->tx.total_packets; |
4453 | if (packets) | |
4454 | avg_wire_size = max_t(u32, avg_wire_size, | |
4455 | q_vector->tx.total_bytes / packets); | |
047e0030 AD |
4456 | |
4457 | /* if avg_wire_size isn't set no work was done */ | |
4458 | if (!avg_wire_size) | |
4459 | goto clear_counts; | |
9d5c8243 | 4460 | |
6eb5a7f1 AD |
4461 | /* Add 24 bytes to size to account for CRC, preamble, and gap */ |
4462 | avg_wire_size += 24; | |
4463 | ||
4464 | /* Don't starve jumbo frames */ | |
4465 | avg_wire_size = min(avg_wire_size, 3000); | |
9d5c8243 | 4466 | |
6eb5a7f1 AD |
4467 | /* Give a little boost to mid-size frames */ |
4468 | if ((avg_wire_size > 300) && (avg_wire_size < 1200)) | |
4469 | new_val = avg_wire_size / 3; | |
4470 | else | |
4471 | new_val = avg_wire_size / 2; | |
9d5c8243 | 4472 | |
0ba82994 AD |
4473 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
4474 | if (new_val < IGB_20K_ITR && | |
4475 | ((q_vector->rx.ring && adapter->rx_itr_setting == 3) || | |
4476 | (!q_vector->rx.ring && adapter->tx_itr_setting == 3))) | |
4477 | new_val = IGB_20K_ITR; | |
abe1c363 | 4478 | |
6eb5a7f1 | 4479 | set_itr_val: |
047e0030 AD |
4480 | if (new_val != q_vector->itr_val) { |
4481 | q_vector->itr_val = new_val; | |
4482 | q_vector->set_itr = 1; | |
9d5c8243 | 4483 | } |
6eb5a7f1 | 4484 | clear_counts: |
0ba82994 AD |
4485 | q_vector->rx.total_bytes = 0; |
4486 | q_vector->rx.total_packets = 0; | |
4487 | q_vector->tx.total_bytes = 0; | |
4488 | q_vector->tx.total_packets = 0; | |
9d5c8243 AK |
4489 | } |
4490 | ||
4491 | /** | |
b980ac18 JK |
4492 | * igb_update_itr - update the dynamic ITR value based on statistics |
4493 | * @q_vector: pointer to q_vector | |
4494 | * @ring_container: ring info to update the itr for | |
4495 | * | |
4496 | * Stores a new ITR value based on packets and byte | |
4497 | * counts during the last interrupt. The advantage of per interrupt | |
4498 | * computation is faster updates and more accurate ITR for the current | |
4499 | * traffic pattern. Constants in this function were computed | |
4500 | * based on theoretical maximum wire speed and thresholds were set based | |
4501 | * on testing data as well as attempting to minimize response time | |
4502 | * while increasing bulk throughput. | |
406d4965 | 4503 | * This functionality is controlled by ethtool's coalescing settings. |
b980ac18 JK |
4504 | * NOTE: These calculations are only valid when operating in a single- |
4505 | * queue environment. | |
9d5c8243 | 4506 | **/ |
0ba82994 AD |
4507 | static void igb_update_itr(struct igb_q_vector *q_vector, |
4508 | struct igb_ring_container *ring_container) | |
9d5c8243 | 4509 | { |
0ba82994 AD |
4510 | unsigned int packets = ring_container->total_packets; |
4511 | unsigned int bytes = ring_container->total_bytes; | |
4512 | u8 itrval = ring_container->itr; | |
9d5c8243 | 4513 | |
0ba82994 | 4514 | /* no packets, exit with status unchanged */ |
9d5c8243 | 4515 | if (packets == 0) |
0ba82994 | 4516 | return; |
9d5c8243 | 4517 | |
0ba82994 | 4518 | switch (itrval) { |
9d5c8243 AK |
4519 | case lowest_latency: |
4520 | /* handle TSO and jumbo frames */ | |
4521 | if (bytes/packets > 8000) | |
0ba82994 | 4522 | itrval = bulk_latency; |
9d5c8243 | 4523 | else if ((packets < 5) && (bytes > 512)) |
0ba82994 | 4524 | itrval = low_latency; |
9d5c8243 AK |
4525 | break; |
4526 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
4527 | if (bytes > 10000) { | |
4528 | /* this if handles the TSO accounting */ | |
d34a15ab | 4529 | if (bytes/packets > 8000) |
0ba82994 | 4530 | itrval = bulk_latency; |
d34a15ab | 4531 | else if ((packets < 10) || ((bytes/packets) > 1200)) |
0ba82994 | 4532 | itrval = bulk_latency; |
d34a15ab | 4533 | else if ((packets > 35)) |
0ba82994 | 4534 | itrval = lowest_latency; |
9d5c8243 | 4535 | } else if (bytes/packets > 2000) { |
0ba82994 | 4536 | itrval = bulk_latency; |
9d5c8243 | 4537 | } else if (packets <= 2 && bytes < 512) { |
0ba82994 | 4538 | itrval = lowest_latency; |
9d5c8243 AK |
4539 | } |
4540 | break; | |
4541 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
4542 | if (bytes > 25000) { | |
4543 | if (packets > 35) | |
0ba82994 | 4544 | itrval = low_latency; |
1e5c3d21 | 4545 | } else if (bytes < 1500) { |
0ba82994 | 4546 | itrval = low_latency; |
9d5c8243 AK |
4547 | } |
4548 | break; | |
4549 | } | |
4550 | ||
0ba82994 AD |
4551 | /* clear work counters since we have the values we need */ |
4552 | ring_container->total_bytes = 0; | |
4553 | ring_container->total_packets = 0; | |
4554 | ||
4555 | /* write updated itr to ring container */ | |
4556 | ring_container->itr = itrval; | |
9d5c8243 AK |
4557 | } |
4558 | ||
0ba82994 | 4559 | static void igb_set_itr(struct igb_q_vector *q_vector) |
9d5c8243 | 4560 | { |
0ba82994 | 4561 | struct igb_adapter *adapter = q_vector->adapter; |
047e0030 | 4562 | u32 new_itr = q_vector->itr_val; |
0ba82994 | 4563 | u8 current_itr = 0; |
9d5c8243 AK |
4564 | |
4565 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ | |
4566 | if (adapter->link_speed != SPEED_1000) { | |
4567 | current_itr = 0; | |
0ba82994 | 4568 | new_itr = IGB_4K_ITR; |
9d5c8243 AK |
4569 | goto set_itr_now; |
4570 | } | |
4571 | ||
0ba82994 AD |
4572 | igb_update_itr(q_vector, &q_vector->tx); |
4573 | igb_update_itr(q_vector, &q_vector->rx); | |
9d5c8243 | 4574 | |
0ba82994 | 4575 | current_itr = max(q_vector->rx.itr, q_vector->tx.itr); |
9d5c8243 | 4576 | |
6eb5a7f1 | 4577 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
0ba82994 AD |
4578 | if (current_itr == lowest_latency && |
4579 | ((q_vector->rx.ring && adapter->rx_itr_setting == 3) || | |
4580 | (!q_vector->rx.ring && adapter->tx_itr_setting == 3))) | |
6eb5a7f1 AD |
4581 | current_itr = low_latency; |
4582 | ||
9d5c8243 AK |
4583 | switch (current_itr) { |
4584 | /* counts and packets in update_itr are dependent on these numbers */ | |
4585 | case lowest_latency: | |
0ba82994 | 4586 | new_itr = IGB_70K_ITR; /* 70,000 ints/sec */ |
9d5c8243 AK |
4587 | break; |
4588 | case low_latency: | |
0ba82994 | 4589 | new_itr = IGB_20K_ITR; /* 20,000 ints/sec */ |
9d5c8243 AK |
4590 | break; |
4591 | case bulk_latency: | |
0ba82994 | 4592 | new_itr = IGB_4K_ITR; /* 4,000 ints/sec */ |
9d5c8243 AK |
4593 | break; |
4594 | default: | |
4595 | break; | |
4596 | } | |
4597 | ||
4598 | set_itr_now: | |
047e0030 | 4599 | if (new_itr != q_vector->itr_val) { |
9d5c8243 AK |
4600 | /* this attempts to bias the interrupt rate towards Bulk |
4601 | * by adding intermediate steps when interrupt rate is | |
b980ac18 JK |
4602 | * increasing |
4603 | */ | |
047e0030 | 4604 | new_itr = new_itr > q_vector->itr_val ? |
b980ac18 JK |
4605 | max((new_itr * q_vector->itr_val) / |
4606 | (new_itr + (q_vector->itr_val >> 2)), | |
4607 | new_itr) : new_itr; | |
9d5c8243 AK |
4608 | /* Don't write the value here; it resets the adapter's |
4609 | * internal timer, and causes us to delay far longer than | |
4610 | * we should between interrupts. Instead, we write the ITR | |
4611 | * value at the beginning of the next interrupt so the timing | |
4612 | * ends up being correct. | |
4613 | */ | |
047e0030 AD |
4614 | q_vector->itr_val = new_itr; |
4615 | q_vector->set_itr = 1; | |
9d5c8243 | 4616 | } |
9d5c8243 AK |
4617 | } |
4618 | ||
c50b52a0 SH |
4619 | static void igb_tx_ctxtdesc(struct igb_ring *tx_ring, u32 vlan_macip_lens, |
4620 | u32 type_tucmd, u32 mss_l4len_idx) | |
7d13a7d0 AD |
4621 | { |
4622 | struct e1000_adv_tx_context_desc *context_desc; | |
4623 | u16 i = tx_ring->next_to_use; | |
4624 | ||
4625 | context_desc = IGB_TX_CTXTDESC(tx_ring, i); | |
4626 | ||
4627 | i++; | |
4628 | tx_ring->next_to_use = (i < tx_ring->count) ? i : 0; | |
4629 | ||
4630 | /* set bits to identify this as an advanced context descriptor */ | |
4631 | type_tucmd |= E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT; | |
4632 | ||
4633 | /* For 82575, context index must be unique per ring. */ | |
866cff06 | 4634 | if (test_bit(IGB_RING_FLAG_TX_CTX_IDX, &tx_ring->flags)) |
7d13a7d0 AD |
4635 | mss_l4len_idx |= tx_ring->reg_idx << 4; |
4636 | ||
4637 | context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); | |
4638 | context_desc->seqnum_seed = 0; | |
4639 | context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd); | |
4640 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); | |
4641 | } | |
4642 | ||
7af40ad9 AD |
4643 | static int igb_tso(struct igb_ring *tx_ring, |
4644 | struct igb_tx_buffer *first, | |
4645 | u8 *hdr_len) | |
9d5c8243 | 4646 | { |
7af40ad9 | 4647 | struct sk_buff *skb = first->skb; |
7d13a7d0 AD |
4648 | u32 vlan_macip_lens, type_tucmd; |
4649 | u32 mss_l4len_idx, l4len; | |
06c14e5a | 4650 | int err; |
7d13a7d0 | 4651 | |
ed6aa105 AD |
4652 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
4653 | return 0; | |
4654 | ||
7d13a7d0 AD |
4655 | if (!skb_is_gso(skb)) |
4656 | return 0; | |
9d5c8243 | 4657 | |
06c14e5a FR |
4658 | err = skb_cow_head(skb, 0); |
4659 | if (err < 0) | |
4660 | return err; | |
9d5c8243 | 4661 | |
7d13a7d0 AD |
4662 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ |
4663 | type_tucmd = E1000_ADVTXD_TUCMD_L4T_TCP; | |
9d5c8243 | 4664 | |
7c4d16ff | 4665 | if (first->protocol == htons(ETH_P_IP)) { |
9d5c8243 AK |
4666 | struct iphdr *iph = ip_hdr(skb); |
4667 | iph->tot_len = 0; | |
4668 | iph->check = 0; | |
4669 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, | |
4670 | iph->daddr, 0, | |
4671 | IPPROTO_TCP, | |
4672 | 0); | |
7d13a7d0 | 4673 | type_tucmd |= E1000_ADVTXD_TUCMD_IPV4; |
7af40ad9 AD |
4674 | first->tx_flags |= IGB_TX_FLAGS_TSO | |
4675 | IGB_TX_FLAGS_CSUM | | |
4676 | IGB_TX_FLAGS_IPV4; | |
8e1e8a47 | 4677 | } else if (skb_is_gso_v6(skb)) { |
9d5c8243 AK |
4678 | ipv6_hdr(skb)->payload_len = 0; |
4679 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
4680 | &ipv6_hdr(skb)->daddr, | |
4681 | 0, IPPROTO_TCP, 0); | |
7af40ad9 AD |
4682 | first->tx_flags |= IGB_TX_FLAGS_TSO | |
4683 | IGB_TX_FLAGS_CSUM; | |
9d5c8243 AK |
4684 | } |
4685 | ||
7af40ad9 | 4686 | /* compute header lengths */ |
7d13a7d0 AD |
4687 | l4len = tcp_hdrlen(skb); |
4688 | *hdr_len = skb_transport_offset(skb) + l4len; | |
9d5c8243 | 4689 | |
7af40ad9 AD |
4690 | /* update gso size and bytecount with header size */ |
4691 | first->gso_segs = skb_shinfo(skb)->gso_segs; | |
4692 | first->bytecount += (first->gso_segs - 1) * *hdr_len; | |
4693 | ||
9d5c8243 | 4694 | /* MSS L4LEN IDX */ |
7d13a7d0 AD |
4695 | mss_l4len_idx = l4len << E1000_ADVTXD_L4LEN_SHIFT; |
4696 | mss_l4len_idx |= skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT; | |
9d5c8243 | 4697 | |
7d13a7d0 AD |
4698 | /* VLAN MACLEN IPLEN */ |
4699 | vlan_macip_lens = skb_network_header_len(skb); | |
4700 | vlan_macip_lens |= skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT; | |
7af40ad9 | 4701 | vlan_macip_lens |= first->tx_flags & IGB_TX_FLAGS_VLAN_MASK; |
9d5c8243 | 4702 | |
7d13a7d0 | 4703 | igb_tx_ctxtdesc(tx_ring, vlan_macip_lens, type_tucmd, mss_l4len_idx); |
9d5c8243 | 4704 | |
7d13a7d0 | 4705 | return 1; |
9d5c8243 AK |
4706 | } |
4707 | ||
7af40ad9 | 4708 | static void igb_tx_csum(struct igb_ring *tx_ring, struct igb_tx_buffer *first) |
9d5c8243 | 4709 | { |
7af40ad9 | 4710 | struct sk_buff *skb = first->skb; |
7d13a7d0 AD |
4711 | u32 vlan_macip_lens = 0; |
4712 | u32 mss_l4len_idx = 0; | |
4713 | u32 type_tucmd = 0; | |
9d5c8243 | 4714 | |
7d13a7d0 | 4715 | if (skb->ip_summed != CHECKSUM_PARTIAL) { |
7af40ad9 AD |
4716 | if (!(first->tx_flags & IGB_TX_FLAGS_VLAN)) |
4717 | return; | |
7d13a7d0 AD |
4718 | } else { |
4719 | u8 l4_hdr = 0; | |
9005df38 | 4720 | |
7af40ad9 | 4721 | switch (first->protocol) { |
7c4d16ff | 4722 | case htons(ETH_P_IP): |
7d13a7d0 AD |
4723 | vlan_macip_lens |= skb_network_header_len(skb); |
4724 | type_tucmd |= E1000_ADVTXD_TUCMD_IPV4; | |
4725 | l4_hdr = ip_hdr(skb)->protocol; | |
4726 | break; | |
7c4d16ff | 4727 | case htons(ETH_P_IPV6): |
7d13a7d0 AD |
4728 | vlan_macip_lens |= skb_network_header_len(skb); |
4729 | l4_hdr = ipv6_hdr(skb)->nexthdr; | |
4730 | break; | |
4731 | default: | |
4732 | if (unlikely(net_ratelimit())) { | |
4733 | dev_warn(tx_ring->dev, | |
b980ac18 JK |
4734 | "partial checksum but proto=%x!\n", |
4735 | first->protocol); | |
fa4a7ef3 | 4736 | } |
7d13a7d0 AD |
4737 | break; |
4738 | } | |
fa4a7ef3 | 4739 | |
7d13a7d0 AD |
4740 | switch (l4_hdr) { |
4741 | case IPPROTO_TCP: | |
4742 | type_tucmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
4743 | mss_l4len_idx = tcp_hdrlen(skb) << | |
4744 | E1000_ADVTXD_L4LEN_SHIFT; | |
4745 | break; | |
4746 | case IPPROTO_SCTP: | |
4747 | type_tucmd |= E1000_ADVTXD_TUCMD_L4T_SCTP; | |
4748 | mss_l4len_idx = sizeof(struct sctphdr) << | |
4749 | E1000_ADVTXD_L4LEN_SHIFT; | |
4750 | break; | |
4751 | case IPPROTO_UDP: | |
4752 | mss_l4len_idx = sizeof(struct udphdr) << | |
4753 | E1000_ADVTXD_L4LEN_SHIFT; | |
4754 | break; | |
4755 | default: | |
4756 | if (unlikely(net_ratelimit())) { | |
4757 | dev_warn(tx_ring->dev, | |
b980ac18 JK |
4758 | "partial checksum but l4 proto=%x!\n", |
4759 | l4_hdr); | |
44b0cda3 | 4760 | } |
7d13a7d0 | 4761 | break; |
9d5c8243 | 4762 | } |
7af40ad9 AD |
4763 | |
4764 | /* update TX checksum flag */ | |
4765 | first->tx_flags |= IGB_TX_FLAGS_CSUM; | |
7d13a7d0 | 4766 | } |
9d5c8243 | 4767 | |
7d13a7d0 | 4768 | vlan_macip_lens |= skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT; |
7af40ad9 | 4769 | vlan_macip_lens |= first->tx_flags & IGB_TX_FLAGS_VLAN_MASK; |
9d5c8243 | 4770 | |
7d13a7d0 | 4771 | igb_tx_ctxtdesc(tx_ring, vlan_macip_lens, type_tucmd, mss_l4len_idx); |
9d5c8243 AK |
4772 | } |
4773 | ||
1d9daf45 AD |
4774 | #define IGB_SET_FLAG(_input, _flag, _result) \ |
4775 | ((_flag <= _result) ? \ | |
4776 | ((u32)(_input & _flag) * (_result / _flag)) : \ | |
4777 | ((u32)(_input & _flag) / (_flag / _result))) | |
4778 | ||
4779 | static u32 igb_tx_cmd_type(struct sk_buff *skb, u32 tx_flags) | |
e032afc8 AD |
4780 | { |
4781 | /* set type for advanced descriptor with frame checksum insertion */ | |
1d9daf45 AD |
4782 | u32 cmd_type = E1000_ADVTXD_DTYP_DATA | |
4783 | E1000_ADVTXD_DCMD_DEXT | | |
4784 | E1000_ADVTXD_DCMD_IFCS; | |
e032afc8 AD |
4785 | |
4786 | /* set HW vlan bit if vlan is present */ | |
1d9daf45 AD |
4787 | cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_VLAN, |
4788 | (E1000_ADVTXD_DCMD_VLE)); | |
4789 | ||
4790 | /* set segmentation bits for TSO */ | |
4791 | cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_TSO, | |
4792 | (E1000_ADVTXD_DCMD_TSE)); | |
e032afc8 AD |
4793 | |
4794 | /* set timestamp bit if present */ | |
1d9daf45 AD |
4795 | cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_TSTAMP, |
4796 | (E1000_ADVTXD_MAC_TSTAMP)); | |
e032afc8 | 4797 | |
1d9daf45 AD |
4798 | /* insert frame checksum */ |
4799 | cmd_type ^= IGB_SET_FLAG(skb->no_fcs, 1, E1000_ADVTXD_DCMD_IFCS); | |
e032afc8 AD |
4800 | |
4801 | return cmd_type; | |
4802 | } | |
4803 | ||
7af40ad9 AD |
4804 | static void igb_tx_olinfo_status(struct igb_ring *tx_ring, |
4805 | union e1000_adv_tx_desc *tx_desc, | |
4806 | u32 tx_flags, unsigned int paylen) | |
e032afc8 AD |
4807 | { |
4808 | u32 olinfo_status = paylen << E1000_ADVTXD_PAYLEN_SHIFT; | |
4809 | ||
1d9daf45 AD |
4810 | /* 82575 requires a unique index per ring */ |
4811 | if (test_bit(IGB_RING_FLAG_TX_CTX_IDX, &tx_ring->flags)) | |
e032afc8 AD |
4812 | olinfo_status |= tx_ring->reg_idx << 4; |
4813 | ||
4814 | /* insert L4 checksum */ | |
1d9daf45 AD |
4815 | olinfo_status |= IGB_SET_FLAG(tx_flags, |
4816 | IGB_TX_FLAGS_CSUM, | |
4817 | (E1000_TXD_POPTS_TXSM << 8)); | |
e032afc8 | 4818 | |
1d9daf45 AD |
4819 | /* insert IPv4 checksum */ |
4820 | olinfo_status |= IGB_SET_FLAG(tx_flags, | |
4821 | IGB_TX_FLAGS_IPV4, | |
4822 | (E1000_TXD_POPTS_IXSM << 8)); | |
e032afc8 | 4823 | |
7af40ad9 | 4824 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); |
e032afc8 AD |
4825 | } |
4826 | ||
6f19e12f DM |
4827 | static int __igb_maybe_stop_tx(struct igb_ring *tx_ring, const u16 size) |
4828 | { | |
4829 | struct net_device *netdev = tx_ring->netdev; | |
4830 | ||
4831 | netif_stop_subqueue(netdev, tx_ring->queue_index); | |
4832 | ||
4833 | /* Herbert's original patch had: | |
4834 | * smp_mb__after_netif_stop_queue(); | |
4835 | * but since that doesn't exist yet, just open code it. | |
4836 | */ | |
4837 | smp_mb(); | |
4838 | ||
4839 | /* We need to check again in a case another CPU has just | |
4840 | * made room available. | |
4841 | */ | |
4842 | if (igb_desc_unused(tx_ring) < size) | |
4843 | return -EBUSY; | |
4844 | ||
4845 | /* A reprieve! */ | |
4846 | netif_wake_subqueue(netdev, tx_ring->queue_index); | |
4847 | ||
4848 | u64_stats_update_begin(&tx_ring->tx_syncp2); | |
4849 | tx_ring->tx_stats.restart_queue2++; | |
4850 | u64_stats_update_end(&tx_ring->tx_syncp2); | |
4851 | ||
4852 | return 0; | |
4853 | } | |
4854 | ||
4855 | static inline int igb_maybe_stop_tx(struct igb_ring *tx_ring, const u16 size) | |
4856 | { | |
4857 | if (igb_desc_unused(tx_ring) >= size) | |
4858 | return 0; | |
4859 | return __igb_maybe_stop_tx(tx_ring, size); | |
4860 | } | |
4861 | ||
7af40ad9 AD |
4862 | static void igb_tx_map(struct igb_ring *tx_ring, |
4863 | struct igb_tx_buffer *first, | |
ebe42d16 | 4864 | const u8 hdr_len) |
9d5c8243 | 4865 | { |
7af40ad9 | 4866 | struct sk_buff *skb = first->skb; |
c9f14bf3 | 4867 | struct igb_tx_buffer *tx_buffer; |
ebe42d16 | 4868 | union e1000_adv_tx_desc *tx_desc; |
80d0759e | 4869 | struct skb_frag_struct *frag; |
ebe42d16 | 4870 | dma_addr_t dma; |
80d0759e | 4871 | unsigned int data_len, size; |
7af40ad9 | 4872 | u32 tx_flags = first->tx_flags; |
1d9daf45 | 4873 | u32 cmd_type = igb_tx_cmd_type(skb, tx_flags); |
ebe42d16 | 4874 | u16 i = tx_ring->next_to_use; |
ebe42d16 AD |
4875 | |
4876 | tx_desc = IGB_TX_DESC(tx_ring, i); | |
4877 | ||
80d0759e AD |
4878 | igb_tx_olinfo_status(tx_ring, tx_desc, tx_flags, skb->len - hdr_len); |
4879 | ||
4880 | size = skb_headlen(skb); | |
4881 | data_len = skb->data_len; | |
ebe42d16 AD |
4882 | |
4883 | dma = dma_map_single(tx_ring->dev, skb->data, size, DMA_TO_DEVICE); | |
9d5c8243 | 4884 | |
80d0759e AD |
4885 | tx_buffer = first; |
4886 | ||
4887 | for (frag = &skb_shinfo(skb)->frags[0];; frag++) { | |
4888 | if (dma_mapping_error(tx_ring->dev, dma)) | |
4889 | goto dma_error; | |
4890 | ||
4891 | /* record length, and DMA address */ | |
4892 | dma_unmap_len_set(tx_buffer, len, size); | |
4893 | dma_unmap_addr_set(tx_buffer, dma, dma); | |
4894 | ||
4895 | tx_desc->read.buffer_addr = cpu_to_le64(dma); | |
ebe42d16 | 4896 | |
ebe42d16 AD |
4897 | while (unlikely(size > IGB_MAX_DATA_PER_TXD)) { |
4898 | tx_desc->read.cmd_type_len = | |
1d9daf45 | 4899 | cpu_to_le32(cmd_type ^ IGB_MAX_DATA_PER_TXD); |
ebe42d16 AD |
4900 | |
4901 | i++; | |
4902 | tx_desc++; | |
4903 | if (i == tx_ring->count) { | |
4904 | tx_desc = IGB_TX_DESC(tx_ring, 0); | |
4905 | i = 0; | |
4906 | } | |
80d0759e | 4907 | tx_desc->read.olinfo_status = 0; |
ebe42d16 AD |
4908 | |
4909 | dma += IGB_MAX_DATA_PER_TXD; | |
4910 | size -= IGB_MAX_DATA_PER_TXD; | |
4911 | ||
ebe42d16 AD |
4912 | tx_desc->read.buffer_addr = cpu_to_le64(dma); |
4913 | } | |
4914 | ||
4915 | if (likely(!data_len)) | |
4916 | break; | |
2bbfebe2 | 4917 | |
1d9daf45 | 4918 | tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type ^ size); |
9d5c8243 | 4919 | |
65689fef | 4920 | i++; |
ebe42d16 AD |
4921 | tx_desc++; |
4922 | if (i == tx_ring->count) { | |
4923 | tx_desc = IGB_TX_DESC(tx_ring, 0); | |
65689fef | 4924 | i = 0; |
ebe42d16 | 4925 | } |
80d0759e | 4926 | tx_desc->read.olinfo_status = 0; |
65689fef | 4927 | |
9e903e08 | 4928 | size = skb_frag_size(frag); |
ebe42d16 AD |
4929 | data_len -= size; |
4930 | ||
4931 | dma = skb_frag_dma_map(tx_ring->dev, frag, 0, | |
80d0759e | 4932 | size, DMA_TO_DEVICE); |
6366ad33 | 4933 | |
c9f14bf3 | 4934 | tx_buffer = &tx_ring->tx_buffer_info[i]; |
9d5c8243 AK |
4935 | } |
4936 | ||
ebe42d16 | 4937 | /* write last descriptor with RS and EOP bits */ |
1d9daf45 AD |
4938 | cmd_type |= size | IGB_TXD_DCMD; |
4939 | tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type); | |
8542db05 | 4940 | |
80d0759e AD |
4941 | netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount); |
4942 | ||
8542db05 AD |
4943 | /* set the timestamp */ |
4944 | first->time_stamp = jiffies; | |
4945 | ||
b980ac18 | 4946 | /* Force memory writes to complete before letting h/w know there |
ebe42d16 AD |
4947 | * are new descriptors to fetch. (Only applicable for weak-ordered |
4948 | * memory model archs, such as IA-64). | |
4949 | * | |
4950 | * We also need this memory barrier to make certain all of the | |
4951 | * status bits have been updated before next_to_watch is written. | |
4952 | */ | |
4953 | wmb(); | |
4954 | ||
8542db05 | 4955 | /* set next_to_watch value indicating a packet is present */ |
ebe42d16 | 4956 | first->next_to_watch = tx_desc; |
9d5c8243 | 4957 | |
ebe42d16 AD |
4958 | i++; |
4959 | if (i == tx_ring->count) | |
4960 | i = 0; | |
6366ad33 | 4961 | |
ebe42d16 | 4962 | tx_ring->next_to_use = i; |
6366ad33 | 4963 | |
6f19e12f DM |
4964 | /* Make sure there is space in the ring for the next send. */ |
4965 | igb_maybe_stop_tx(tx_ring, DESC_NEEDED); | |
4966 | ||
4967 | if (netif_xmit_stopped(txring_txq(tx_ring)) || !skb->xmit_more) { | |
0b725a2c DM |
4968 | writel(i, tx_ring->tail); |
4969 | ||
4970 | /* we need this if more than one processor can write to our tail | |
4971 | * at a time, it synchronizes IO on IA64/Altix systems | |
4972 | */ | |
4973 | mmiowb(); | |
4974 | } | |
ebe42d16 AD |
4975 | return; |
4976 | ||
4977 | dma_error: | |
4978 | dev_err(tx_ring->dev, "TX DMA map failed\n"); | |
4979 | ||
4980 | /* clear dma mappings for failed tx_buffer_info map */ | |
4981 | for (;;) { | |
c9f14bf3 AD |
4982 | tx_buffer = &tx_ring->tx_buffer_info[i]; |
4983 | igb_unmap_and_free_tx_resource(tx_ring, tx_buffer); | |
4984 | if (tx_buffer == first) | |
ebe42d16 | 4985 | break; |
a77ff709 NN |
4986 | if (i == 0) |
4987 | i = tx_ring->count; | |
6366ad33 | 4988 | i--; |
6366ad33 AD |
4989 | } |
4990 | ||
9d5c8243 | 4991 | tx_ring->next_to_use = i; |
9d5c8243 AK |
4992 | } |
4993 | ||
cd392f5c AD |
4994 | netdev_tx_t igb_xmit_frame_ring(struct sk_buff *skb, |
4995 | struct igb_ring *tx_ring) | |
9d5c8243 | 4996 | { |
8542db05 | 4997 | struct igb_tx_buffer *first; |
ebe42d16 | 4998 | int tso; |
91d4ee33 | 4999 | u32 tx_flags = 0; |
2ee52ad4 | 5000 | unsigned short f; |
21ba6fe1 | 5001 | u16 count = TXD_USE_COUNT(skb_headlen(skb)); |
31f6adbb | 5002 | __be16 protocol = vlan_get_protocol(skb); |
91d4ee33 | 5003 | u8 hdr_len = 0; |
9d5c8243 | 5004 | |
21ba6fe1 AD |
5005 | /* need: 1 descriptor per page * PAGE_SIZE/IGB_MAX_DATA_PER_TXD, |
5006 | * + 1 desc for skb_headlen/IGB_MAX_DATA_PER_TXD, | |
9d5c8243 | 5007 | * + 2 desc gap to keep tail from touching head, |
9d5c8243 | 5008 | * + 1 desc for context descriptor, |
21ba6fe1 AD |
5009 | * otherwise try next time |
5010 | */ | |
2ee52ad4 AD |
5011 | for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) |
5012 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size); | |
21ba6fe1 AD |
5013 | |
5014 | if (igb_maybe_stop_tx(tx_ring, count + 3)) { | |
9d5c8243 | 5015 | /* this is a hard error */ |
9d5c8243 AK |
5016 | return NETDEV_TX_BUSY; |
5017 | } | |
33af6bcc | 5018 | |
7af40ad9 AD |
5019 | /* record the location of the first descriptor for this packet */ |
5020 | first = &tx_ring->tx_buffer_info[tx_ring->next_to_use]; | |
5021 | first->skb = skb; | |
5022 | first->bytecount = skb->len; | |
5023 | first->gso_segs = 1; | |
5024 | ||
b646c22e AD |
5025 | if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) { |
5026 | struct igb_adapter *adapter = netdev_priv(tx_ring->netdev); | |
1f6e8178 | 5027 | |
ed4420a3 JK |
5028 | if (!test_and_set_bit_lock(__IGB_PTP_TX_IN_PROGRESS, |
5029 | &adapter->state)) { | |
b646c22e AD |
5030 | skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; |
5031 | tx_flags |= IGB_TX_FLAGS_TSTAMP; | |
5032 | ||
5033 | adapter->ptp_tx_skb = skb_get(skb); | |
5034 | adapter->ptp_tx_start = jiffies; | |
5035 | if (adapter->hw.mac.type == e1000_82576) | |
5036 | schedule_work(&adapter->ptp_tx_work); | |
5037 | } | |
33af6bcc | 5038 | } |
9d5c8243 | 5039 | |
afc835d1 JK |
5040 | skb_tx_timestamp(skb); |
5041 | ||
df8a39de | 5042 | if (skb_vlan_tag_present(skb)) { |
9d5c8243 | 5043 | tx_flags |= IGB_TX_FLAGS_VLAN; |
df8a39de | 5044 | tx_flags |= (skb_vlan_tag_get(skb) << IGB_TX_FLAGS_VLAN_SHIFT); |
9d5c8243 AK |
5045 | } |
5046 | ||
7af40ad9 AD |
5047 | /* record initial flags and protocol */ |
5048 | first->tx_flags = tx_flags; | |
5049 | first->protocol = protocol; | |
cdfd01fc | 5050 | |
7af40ad9 AD |
5051 | tso = igb_tso(tx_ring, first, &hdr_len); |
5052 | if (tso < 0) | |
7d13a7d0 | 5053 | goto out_drop; |
7af40ad9 AD |
5054 | else if (!tso) |
5055 | igb_tx_csum(tx_ring, first); | |
9d5c8243 | 5056 | |
7af40ad9 | 5057 | igb_tx_map(tx_ring, first, hdr_len); |
85ad76b2 | 5058 | |
9d5c8243 | 5059 | return NETDEV_TX_OK; |
7d13a7d0 AD |
5060 | |
5061 | out_drop: | |
7af40ad9 AD |
5062 | igb_unmap_and_free_tx_resource(tx_ring, first); |
5063 | ||
7d13a7d0 | 5064 | return NETDEV_TX_OK; |
9d5c8243 AK |
5065 | } |
5066 | ||
0b725a2c DM |
5067 | static inline struct igb_ring *igb_tx_queue_mapping(struct igb_adapter *adapter, |
5068 | struct sk_buff *skb) | |
1cc3bd87 | 5069 | { |
0b725a2c DM |
5070 | unsigned int r_idx = skb->queue_mapping; |
5071 | ||
1cc3bd87 AD |
5072 | if (r_idx >= adapter->num_tx_queues) |
5073 | r_idx = r_idx % adapter->num_tx_queues; | |
5074 | ||
5075 | return adapter->tx_ring[r_idx]; | |
5076 | } | |
5077 | ||
cd392f5c AD |
5078 | static netdev_tx_t igb_xmit_frame(struct sk_buff *skb, |
5079 | struct net_device *netdev) | |
9d5c8243 AK |
5080 | { |
5081 | struct igb_adapter *adapter = netdev_priv(netdev); | |
b1a436c3 AD |
5082 | |
5083 | if (test_bit(__IGB_DOWN, &adapter->state)) { | |
5084 | dev_kfree_skb_any(skb); | |
5085 | return NETDEV_TX_OK; | |
5086 | } | |
5087 | ||
5088 | if (skb->len <= 0) { | |
5089 | dev_kfree_skb_any(skb); | |
5090 | return NETDEV_TX_OK; | |
5091 | } | |
5092 | ||
b980ac18 | 5093 | /* The minimum packet size with TCTL.PSP set is 17 so pad the skb |
1cc3bd87 AD |
5094 | * in order to meet this minimum size requirement. |
5095 | */ | |
a94d9e22 AD |
5096 | if (skb_put_padto(skb, 17)) |
5097 | return NETDEV_TX_OK; | |
9d5c8243 | 5098 | |
1cc3bd87 | 5099 | return igb_xmit_frame_ring(skb, igb_tx_queue_mapping(adapter, skb)); |
9d5c8243 AK |
5100 | } |
5101 | ||
5102 | /** | |
b980ac18 JK |
5103 | * igb_tx_timeout - Respond to a Tx Hang |
5104 | * @netdev: network interface device structure | |
9d5c8243 AK |
5105 | **/ |
5106 | static void igb_tx_timeout(struct net_device *netdev) | |
5107 | { | |
5108 | struct igb_adapter *adapter = netdev_priv(netdev); | |
5109 | struct e1000_hw *hw = &adapter->hw; | |
5110 | ||
5111 | /* Do the reset outside of interrupt context */ | |
5112 | adapter->tx_timeout_count++; | |
f7ba205e | 5113 | |
06218a8d | 5114 | if (hw->mac.type >= e1000_82580) |
55cac248 AD |
5115 | hw->dev_spec._82575.global_device_reset = true; |
5116 | ||
9d5c8243 | 5117 | schedule_work(&adapter->reset_task); |
265de409 AD |
5118 | wr32(E1000_EICS, |
5119 | (adapter->eims_enable_mask & ~adapter->eims_other)); | |
9d5c8243 AK |
5120 | } |
5121 | ||
5122 | static void igb_reset_task(struct work_struct *work) | |
5123 | { | |
5124 | struct igb_adapter *adapter; | |
5125 | adapter = container_of(work, struct igb_adapter, reset_task); | |
5126 | ||
c97ec42a TI |
5127 | igb_dump(adapter); |
5128 | netdev_err(adapter->netdev, "Reset adapter\n"); | |
9d5c8243 AK |
5129 | igb_reinit_locked(adapter); |
5130 | } | |
5131 | ||
5132 | /** | |
b980ac18 JK |
5133 | * igb_get_stats64 - Get System Network Statistics |
5134 | * @netdev: network interface device structure | |
5135 | * @stats: rtnl_link_stats64 pointer | |
9d5c8243 | 5136 | **/ |
12dcd86b | 5137 | static struct rtnl_link_stats64 *igb_get_stats64(struct net_device *netdev, |
b980ac18 | 5138 | struct rtnl_link_stats64 *stats) |
9d5c8243 | 5139 | { |
12dcd86b ED |
5140 | struct igb_adapter *adapter = netdev_priv(netdev); |
5141 | ||
5142 | spin_lock(&adapter->stats64_lock); | |
5143 | igb_update_stats(adapter, &adapter->stats64); | |
5144 | memcpy(stats, &adapter->stats64, sizeof(*stats)); | |
5145 | spin_unlock(&adapter->stats64_lock); | |
5146 | ||
5147 | return stats; | |
9d5c8243 AK |
5148 | } |
5149 | ||
5150 | /** | |
b980ac18 JK |
5151 | * igb_change_mtu - Change the Maximum Transfer Unit |
5152 | * @netdev: network interface device structure | |
5153 | * @new_mtu: new value for maximum frame size | |
9d5c8243 | 5154 | * |
b980ac18 | 5155 | * Returns 0 on success, negative on failure |
9d5c8243 AK |
5156 | **/ |
5157 | static int igb_change_mtu(struct net_device *netdev, int new_mtu) | |
5158 | { | |
5159 | struct igb_adapter *adapter = netdev_priv(netdev); | |
090b1795 | 5160 | struct pci_dev *pdev = adapter->pdev; |
153285f9 | 5161 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; |
9d5c8243 | 5162 | |
c809d227 | 5163 | if ((new_mtu < 68) || (max_frame > MAX_JUMBO_FRAME_SIZE)) { |
090b1795 | 5164 | dev_err(&pdev->dev, "Invalid MTU setting\n"); |
9d5c8243 AK |
5165 | return -EINVAL; |
5166 | } | |
5167 | ||
153285f9 | 5168 | #define MAX_STD_JUMBO_FRAME_SIZE 9238 |
9d5c8243 | 5169 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { |
090b1795 | 5170 | dev_err(&pdev->dev, "MTU > 9216 not supported.\n"); |
9d5c8243 AK |
5171 | return -EINVAL; |
5172 | } | |
5173 | ||
2ccd994c AD |
5174 | /* adjust max frame to be at least the size of a standard frame */ |
5175 | if (max_frame < (ETH_FRAME_LEN + ETH_FCS_LEN)) | |
5176 | max_frame = ETH_FRAME_LEN + ETH_FCS_LEN; | |
5177 | ||
9d5c8243 | 5178 | while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) |
0d451e79 | 5179 | usleep_range(1000, 2000); |
73cd78f1 | 5180 | |
9d5c8243 AK |
5181 | /* igb_down has a dependency on max_frame_size */ |
5182 | adapter->max_frame_size = max_frame; | |
559e9c49 | 5183 | |
4c844851 AD |
5184 | if (netif_running(netdev)) |
5185 | igb_down(adapter); | |
9d5c8243 | 5186 | |
090b1795 | 5187 | dev_info(&pdev->dev, "changing MTU from %d to %d\n", |
9d5c8243 AK |
5188 | netdev->mtu, new_mtu); |
5189 | netdev->mtu = new_mtu; | |
5190 | ||
5191 | if (netif_running(netdev)) | |
5192 | igb_up(adapter); | |
5193 | else | |
5194 | igb_reset(adapter); | |
5195 | ||
5196 | clear_bit(__IGB_RESETTING, &adapter->state); | |
5197 | ||
5198 | return 0; | |
5199 | } | |
5200 | ||
5201 | /** | |
b980ac18 JK |
5202 | * igb_update_stats - Update the board statistics counters |
5203 | * @adapter: board private structure | |
9d5c8243 | 5204 | **/ |
12dcd86b ED |
5205 | void igb_update_stats(struct igb_adapter *adapter, |
5206 | struct rtnl_link_stats64 *net_stats) | |
9d5c8243 AK |
5207 | { |
5208 | struct e1000_hw *hw = &adapter->hw; | |
5209 | struct pci_dev *pdev = adapter->pdev; | |
fa3d9a6d | 5210 | u32 reg, mpc; |
3f9c0164 AD |
5211 | int i; |
5212 | u64 bytes, packets; | |
12dcd86b ED |
5213 | unsigned int start; |
5214 | u64 _bytes, _packets; | |
9d5c8243 | 5215 | |
b980ac18 | 5216 | /* Prevent stats update while adapter is being reset, or if the pci |
9d5c8243 AK |
5217 | * connection is down. |
5218 | */ | |
5219 | if (adapter->link_speed == 0) | |
5220 | return; | |
5221 | if (pci_channel_offline(pdev)) | |
5222 | return; | |
5223 | ||
3f9c0164 AD |
5224 | bytes = 0; |
5225 | packets = 0; | |
7f90128e AA |
5226 | |
5227 | rcu_read_lock(); | |
3f9c0164 | 5228 | for (i = 0; i < adapter->num_rx_queues; i++) { |
3025a446 | 5229 | struct igb_ring *ring = adapter->rx_ring[i]; |
e66c083a TF |
5230 | u32 rqdpc = rd32(E1000_RQDPC(i)); |
5231 | if (hw->mac.type >= e1000_i210) | |
5232 | wr32(E1000_RQDPC(i), 0); | |
12dcd86b | 5233 | |
ae1c07a6 AD |
5234 | if (rqdpc) { |
5235 | ring->rx_stats.drops += rqdpc; | |
5236 | net_stats->rx_fifo_errors += rqdpc; | |
5237 | } | |
12dcd86b ED |
5238 | |
5239 | do { | |
57a7744e | 5240 | start = u64_stats_fetch_begin_irq(&ring->rx_syncp); |
12dcd86b ED |
5241 | _bytes = ring->rx_stats.bytes; |
5242 | _packets = ring->rx_stats.packets; | |
57a7744e | 5243 | } while (u64_stats_fetch_retry_irq(&ring->rx_syncp, start)); |
12dcd86b ED |
5244 | bytes += _bytes; |
5245 | packets += _packets; | |
3f9c0164 AD |
5246 | } |
5247 | ||
128e45eb AD |
5248 | net_stats->rx_bytes = bytes; |
5249 | net_stats->rx_packets = packets; | |
3f9c0164 AD |
5250 | |
5251 | bytes = 0; | |
5252 | packets = 0; | |
5253 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
3025a446 | 5254 | struct igb_ring *ring = adapter->tx_ring[i]; |
12dcd86b | 5255 | do { |
57a7744e | 5256 | start = u64_stats_fetch_begin_irq(&ring->tx_syncp); |
12dcd86b ED |
5257 | _bytes = ring->tx_stats.bytes; |
5258 | _packets = ring->tx_stats.packets; | |
57a7744e | 5259 | } while (u64_stats_fetch_retry_irq(&ring->tx_syncp, start)); |
12dcd86b ED |
5260 | bytes += _bytes; |
5261 | packets += _packets; | |
3f9c0164 | 5262 | } |
128e45eb AD |
5263 | net_stats->tx_bytes = bytes; |
5264 | net_stats->tx_packets = packets; | |
7f90128e | 5265 | rcu_read_unlock(); |
3f9c0164 AD |
5266 | |
5267 | /* read stats registers */ | |
9d5c8243 AK |
5268 | adapter->stats.crcerrs += rd32(E1000_CRCERRS); |
5269 | adapter->stats.gprc += rd32(E1000_GPRC); | |
5270 | adapter->stats.gorc += rd32(E1000_GORCL); | |
5271 | rd32(E1000_GORCH); /* clear GORCL */ | |
5272 | adapter->stats.bprc += rd32(E1000_BPRC); | |
5273 | adapter->stats.mprc += rd32(E1000_MPRC); | |
5274 | adapter->stats.roc += rd32(E1000_ROC); | |
5275 | ||
5276 | adapter->stats.prc64 += rd32(E1000_PRC64); | |
5277 | adapter->stats.prc127 += rd32(E1000_PRC127); | |
5278 | adapter->stats.prc255 += rd32(E1000_PRC255); | |
5279 | adapter->stats.prc511 += rd32(E1000_PRC511); | |
5280 | adapter->stats.prc1023 += rd32(E1000_PRC1023); | |
5281 | adapter->stats.prc1522 += rd32(E1000_PRC1522); | |
5282 | adapter->stats.symerrs += rd32(E1000_SYMERRS); | |
5283 | adapter->stats.sec += rd32(E1000_SEC); | |
5284 | ||
fa3d9a6d MW |
5285 | mpc = rd32(E1000_MPC); |
5286 | adapter->stats.mpc += mpc; | |
5287 | net_stats->rx_fifo_errors += mpc; | |
9d5c8243 AK |
5288 | adapter->stats.scc += rd32(E1000_SCC); |
5289 | adapter->stats.ecol += rd32(E1000_ECOL); | |
5290 | adapter->stats.mcc += rd32(E1000_MCC); | |
5291 | adapter->stats.latecol += rd32(E1000_LATECOL); | |
5292 | adapter->stats.dc += rd32(E1000_DC); | |
5293 | adapter->stats.rlec += rd32(E1000_RLEC); | |
5294 | adapter->stats.xonrxc += rd32(E1000_XONRXC); | |
5295 | adapter->stats.xontxc += rd32(E1000_XONTXC); | |
5296 | adapter->stats.xoffrxc += rd32(E1000_XOFFRXC); | |
5297 | adapter->stats.xofftxc += rd32(E1000_XOFFTXC); | |
5298 | adapter->stats.fcruc += rd32(E1000_FCRUC); | |
5299 | adapter->stats.gptc += rd32(E1000_GPTC); | |
5300 | adapter->stats.gotc += rd32(E1000_GOTCL); | |
5301 | rd32(E1000_GOTCH); /* clear GOTCL */ | |
fa3d9a6d | 5302 | adapter->stats.rnbc += rd32(E1000_RNBC); |
9d5c8243 AK |
5303 | adapter->stats.ruc += rd32(E1000_RUC); |
5304 | adapter->stats.rfc += rd32(E1000_RFC); | |
5305 | adapter->stats.rjc += rd32(E1000_RJC); | |
5306 | adapter->stats.tor += rd32(E1000_TORH); | |
5307 | adapter->stats.tot += rd32(E1000_TOTH); | |
5308 | adapter->stats.tpr += rd32(E1000_TPR); | |
5309 | ||
5310 | adapter->stats.ptc64 += rd32(E1000_PTC64); | |
5311 | adapter->stats.ptc127 += rd32(E1000_PTC127); | |
5312 | adapter->stats.ptc255 += rd32(E1000_PTC255); | |
5313 | adapter->stats.ptc511 += rd32(E1000_PTC511); | |
5314 | adapter->stats.ptc1023 += rd32(E1000_PTC1023); | |
5315 | adapter->stats.ptc1522 += rd32(E1000_PTC1522); | |
5316 | ||
5317 | adapter->stats.mptc += rd32(E1000_MPTC); | |
5318 | adapter->stats.bptc += rd32(E1000_BPTC); | |
5319 | ||
2d0b0f69 NN |
5320 | adapter->stats.tpt += rd32(E1000_TPT); |
5321 | adapter->stats.colc += rd32(E1000_COLC); | |
9d5c8243 AK |
5322 | |
5323 | adapter->stats.algnerrc += rd32(E1000_ALGNERRC); | |
43915c7c NN |
5324 | /* read internal phy specific stats */ |
5325 | reg = rd32(E1000_CTRL_EXT); | |
5326 | if (!(reg & E1000_CTRL_EXT_LINK_MODE_MASK)) { | |
5327 | adapter->stats.rxerrc += rd32(E1000_RXERRC); | |
3dbdf969 CW |
5328 | |
5329 | /* this stat has invalid values on i210/i211 */ | |
5330 | if ((hw->mac.type != e1000_i210) && | |
5331 | (hw->mac.type != e1000_i211)) | |
5332 | adapter->stats.tncrs += rd32(E1000_TNCRS); | |
43915c7c NN |
5333 | } |
5334 | ||
9d5c8243 AK |
5335 | adapter->stats.tsctc += rd32(E1000_TSCTC); |
5336 | adapter->stats.tsctfc += rd32(E1000_TSCTFC); | |
5337 | ||
5338 | adapter->stats.iac += rd32(E1000_IAC); | |
5339 | adapter->stats.icrxoc += rd32(E1000_ICRXOC); | |
5340 | adapter->stats.icrxptc += rd32(E1000_ICRXPTC); | |
5341 | adapter->stats.icrxatc += rd32(E1000_ICRXATC); | |
5342 | adapter->stats.ictxptc += rd32(E1000_ICTXPTC); | |
5343 | adapter->stats.ictxatc += rd32(E1000_ICTXATC); | |
5344 | adapter->stats.ictxqec += rd32(E1000_ICTXQEC); | |
5345 | adapter->stats.ictxqmtc += rd32(E1000_ICTXQMTC); | |
5346 | adapter->stats.icrxdmtc += rd32(E1000_ICRXDMTC); | |
5347 | ||
5348 | /* Fill out the OS statistics structure */ | |
128e45eb AD |
5349 | net_stats->multicast = adapter->stats.mprc; |
5350 | net_stats->collisions = adapter->stats.colc; | |
9d5c8243 AK |
5351 | |
5352 | /* Rx Errors */ | |
5353 | ||
5354 | /* RLEC on some newer hardware can be incorrect so build | |
b980ac18 JK |
5355 | * our own version based on RUC and ROC |
5356 | */ | |
128e45eb | 5357 | net_stats->rx_errors = adapter->stats.rxerrc + |
9d5c8243 AK |
5358 | adapter->stats.crcerrs + adapter->stats.algnerrc + |
5359 | adapter->stats.ruc + adapter->stats.roc + | |
5360 | adapter->stats.cexterr; | |
128e45eb AD |
5361 | net_stats->rx_length_errors = adapter->stats.ruc + |
5362 | adapter->stats.roc; | |
5363 | net_stats->rx_crc_errors = adapter->stats.crcerrs; | |
5364 | net_stats->rx_frame_errors = adapter->stats.algnerrc; | |
5365 | net_stats->rx_missed_errors = adapter->stats.mpc; | |
9d5c8243 AK |
5366 | |
5367 | /* Tx Errors */ | |
128e45eb AD |
5368 | net_stats->tx_errors = adapter->stats.ecol + |
5369 | adapter->stats.latecol; | |
5370 | net_stats->tx_aborted_errors = adapter->stats.ecol; | |
5371 | net_stats->tx_window_errors = adapter->stats.latecol; | |
5372 | net_stats->tx_carrier_errors = adapter->stats.tncrs; | |
9d5c8243 AK |
5373 | |
5374 | /* Tx Dropped needs to be maintained elsewhere */ | |
5375 | ||
9d5c8243 AK |
5376 | /* Management Stats */ |
5377 | adapter->stats.mgptc += rd32(E1000_MGTPTC); | |
5378 | adapter->stats.mgprc += rd32(E1000_MGTPRC); | |
5379 | adapter->stats.mgpdc += rd32(E1000_MGTPDC); | |
0a915b95 CW |
5380 | |
5381 | /* OS2BMC Stats */ | |
5382 | reg = rd32(E1000_MANC); | |
5383 | if (reg & E1000_MANC_EN_BMC2OS) { | |
5384 | adapter->stats.o2bgptc += rd32(E1000_O2BGPTC); | |
5385 | adapter->stats.o2bspc += rd32(E1000_O2BSPC); | |
5386 | adapter->stats.b2ospc += rd32(E1000_B2OSPC); | |
5387 | adapter->stats.b2ogprc += rd32(E1000_B2OGPRC); | |
5388 | } | |
9d5c8243 AK |
5389 | } |
5390 | ||
61d7f75f RC |
5391 | static void igb_tsync_interrupt(struct igb_adapter *adapter) |
5392 | { | |
5393 | struct e1000_hw *hw = &adapter->hw; | |
00c65578 | 5394 | struct ptp_clock_event event; |
40c9b079 | 5395 | struct timespec64 ts; |
720db4ff | 5396 | u32 ack = 0, tsauxc, sec, nsec, tsicr = rd32(E1000_TSICR); |
00c65578 RC |
5397 | |
5398 | if (tsicr & TSINTR_SYS_WRAP) { | |
5399 | event.type = PTP_CLOCK_PPS; | |
5400 | if (adapter->ptp_caps.pps) | |
5401 | ptp_clock_event(adapter->ptp_clock, &event); | |
5402 | else | |
5403 | dev_err(&adapter->pdev->dev, "unexpected SYS WRAP"); | |
5404 | ack |= TSINTR_SYS_WRAP; | |
5405 | } | |
61d7f75f RC |
5406 | |
5407 | if (tsicr & E1000_TSICR_TXTS) { | |
61d7f75f RC |
5408 | /* retrieve hardware timestamp */ |
5409 | schedule_work(&adapter->ptp_tx_work); | |
00c65578 | 5410 | ack |= E1000_TSICR_TXTS; |
61d7f75f | 5411 | } |
00c65578 | 5412 | |
720db4ff RC |
5413 | if (tsicr & TSINTR_TT0) { |
5414 | spin_lock(&adapter->tmreg_lock); | |
40c9b079 AB |
5415 | ts = timespec64_add(adapter->perout[0].start, |
5416 | adapter->perout[0].period); | |
5417 | /* u32 conversion of tv_sec is safe until y2106 */ | |
720db4ff | 5418 | wr32(E1000_TRGTTIML0, ts.tv_nsec); |
40c9b079 | 5419 | wr32(E1000_TRGTTIMH0, (u32)ts.tv_sec); |
720db4ff RC |
5420 | tsauxc = rd32(E1000_TSAUXC); |
5421 | tsauxc |= TSAUXC_EN_TT0; | |
5422 | wr32(E1000_TSAUXC, tsauxc); | |
5423 | adapter->perout[0].start = ts; | |
5424 | spin_unlock(&adapter->tmreg_lock); | |
5425 | ack |= TSINTR_TT0; | |
5426 | } | |
5427 | ||
5428 | if (tsicr & TSINTR_TT1) { | |
5429 | spin_lock(&adapter->tmreg_lock); | |
40c9b079 AB |
5430 | ts = timespec64_add(adapter->perout[1].start, |
5431 | adapter->perout[1].period); | |
720db4ff | 5432 | wr32(E1000_TRGTTIML1, ts.tv_nsec); |
40c9b079 | 5433 | wr32(E1000_TRGTTIMH1, (u32)ts.tv_sec); |
720db4ff RC |
5434 | tsauxc = rd32(E1000_TSAUXC); |
5435 | tsauxc |= TSAUXC_EN_TT1; | |
5436 | wr32(E1000_TSAUXC, tsauxc); | |
5437 | adapter->perout[1].start = ts; | |
5438 | spin_unlock(&adapter->tmreg_lock); | |
5439 | ack |= TSINTR_TT1; | |
5440 | } | |
5441 | ||
5442 | if (tsicr & TSINTR_AUTT0) { | |
5443 | nsec = rd32(E1000_AUXSTMPL0); | |
5444 | sec = rd32(E1000_AUXSTMPH0); | |
5445 | event.type = PTP_CLOCK_EXTTS; | |
5446 | event.index = 0; | |
5447 | event.timestamp = sec * 1000000000ULL + nsec; | |
5448 | ptp_clock_event(adapter->ptp_clock, &event); | |
5449 | ack |= TSINTR_AUTT0; | |
5450 | } | |
5451 | ||
5452 | if (tsicr & TSINTR_AUTT1) { | |
5453 | nsec = rd32(E1000_AUXSTMPL1); | |
5454 | sec = rd32(E1000_AUXSTMPH1); | |
5455 | event.type = PTP_CLOCK_EXTTS; | |
5456 | event.index = 1; | |
5457 | event.timestamp = sec * 1000000000ULL + nsec; | |
5458 | ptp_clock_event(adapter->ptp_clock, &event); | |
5459 | ack |= TSINTR_AUTT1; | |
5460 | } | |
5461 | ||
00c65578 RC |
5462 | /* acknowledge the interrupts */ |
5463 | wr32(E1000_TSICR, ack); | |
61d7f75f RC |
5464 | } |
5465 | ||
9d5c8243 AK |
5466 | static irqreturn_t igb_msix_other(int irq, void *data) |
5467 | { | |
047e0030 | 5468 | struct igb_adapter *adapter = data; |
9d5c8243 | 5469 | struct e1000_hw *hw = &adapter->hw; |
844290e5 | 5470 | u32 icr = rd32(E1000_ICR); |
844290e5 | 5471 | /* reading ICR causes bit 31 of EICR to be cleared */ |
dda0e083 | 5472 | |
7f081d40 AD |
5473 | if (icr & E1000_ICR_DRSTA) |
5474 | schedule_work(&adapter->reset_task); | |
5475 | ||
047e0030 | 5476 | if (icr & E1000_ICR_DOUTSYNC) { |
dda0e083 AD |
5477 | /* HW is reporting DMA is out of sync */ |
5478 | adapter->stats.doosync++; | |
13800469 GR |
5479 | /* The DMA Out of Sync is also indication of a spoof event |
5480 | * in IOV mode. Check the Wrong VM Behavior register to | |
b980ac18 JK |
5481 | * see if it is really a spoof event. |
5482 | */ | |
13800469 | 5483 | igb_check_wvbr(adapter); |
dda0e083 | 5484 | } |
eebbbdba | 5485 | |
4ae196df AD |
5486 | /* Check for a mailbox event */ |
5487 | if (icr & E1000_ICR_VMMB) | |
5488 | igb_msg_task(adapter); | |
5489 | ||
5490 | if (icr & E1000_ICR_LSC) { | |
5491 | hw->mac.get_link_status = 1; | |
5492 | /* guard against interrupt when we're going down */ | |
5493 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
5494 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
5495 | } | |
5496 | ||
61d7f75f RC |
5497 | if (icr & E1000_ICR_TS) |
5498 | igb_tsync_interrupt(adapter); | |
1f6e8178 | 5499 | |
844290e5 | 5500 | wr32(E1000_EIMS, adapter->eims_other); |
9d5c8243 AK |
5501 | |
5502 | return IRQ_HANDLED; | |
5503 | } | |
5504 | ||
047e0030 | 5505 | static void igb_write_itr(struct igb_q_vector *q_vector) |
9d5c8243 | 5506 | { |
26b39276 | 5507 | struct igb_adapter *adapter = q_vector->adapter; |
047e0030 | 5508 | u32 itr_val = q_vector->itr_val & 0x7FFC; |
9d5c8243 | 5509 | |
047e0030 AD |
5510 | if (!q_vector->set_itr) |
5511 | return; | |
73cd78f1 | 5512 | |
047e0030 AD |
5513 | if (!itr_val) |
5514 | itr_val = 0x4; | |
661086df | 5515 | |
26b39276 AD |
5516 | if (adapter->hw.mac.type == e1000_82575) |
5517 | itr_val |= itr_val << 16; | |
661086df | 5518 | else |
0ba82994 | 5519 | itr_val |= E1000_EITR_CNT_IGNR; |
661086df | 5520 | |
047e0030 AD |
5521 | writel(itr_val, q_vector->itr_register); |
5522 | q_vector->set_itr = 0; | |
6eb5a7f1 AD |
5523 | } |
5524 | ||
047e0030 | 5525 | static irqreturn_t igb_msix_ring(int irq, void *data) |
9d5c8243 | 5526 | { |
047e0030 | 5527 | struct igb_q_vector *q_vector = data; |
9d5c8243 | 5528 | |
047e0030 AD |
5529 | /* Write the ITR value calculated from the previous interrupt. */ |
5530 | igb_write_itr(q_vector); | |
9d5c8243 | 5531 | |
047e0030 | 5532 | napi_schedule(&q_vector->napi); |
844290e5 | 5533 | |
047e0030 | 5534 | return IRQ_HANDLED; |
fe4506b6 JC |
5535 | } |
5536 | ||
421e02f0 | 5537 | #ifdef CONFIG_IGB_DCA |
6a05004a AD |
5538 | static void igb_update_tx_dca(struct igb_adapter *adapter, |
5539 | struct igb_ring *tx_ring, | |
5540 | int cpu) | |
5541 | { | |
5542 | struct e1000_hw *hw = &adapter->hw; | |
5543 | u32 txctrl = dca3_get_tag(tx_ring->dev, cpu); | |
5544 | ||
5545 | if (hw->mac.type != e1000_82575) | |
5546 | txctrl <<= E1000_DCA_TXCTRL_CPUID_SHIFT; | |
5547 | ||
b980ac18 | 5548 | /* We can enable relaxed ordering for reads, but not writes when |
6a05004a AD |
5549 | * DCA is enabled. This is due to a known issue in some chipsets |
5550 | * which will cause the DCA tag to be cleared. | |
5551 | */ | |
5552 | txctrl |= E1000_DCA_TXCTRL_DESC_RRO_EN | | |
5553 | E1000_DCA_TXCTRL_DATA_RRO_EN | | |
5554 | E1000_DCA_TXCTRL_DESC_DCA_EN; | |
5555 | ||
5556 | wr32(E1000_DCA_TXCTRL(tx_ring->reg_idx), txctrl); | |
5557 | } | |
5558 | ||
5559 | static void igb_update_rx_dca(struct igb_adapter *adapter, | |
5560 | struct igb_ring *rx_ring, | |
5561 | int cpu) | |
5562 | { | |
5563 | struct e1000_hw *hw = &adapter->hw; | |
5564 | u32 rxctrl = dca3_get_tag(&adapter->pdev->dev, cpu); | |
5565 | ||
5566 | if (hw->mac.type != e1000_82575) | |
5567 | rxctrl <<= E1000_DCA_RXCTRL_CPUID_SHIFT; | |
5568 | ||
b980ac18 | 5569 | /* We can enable relaxed ordering for reads, but not writes when |
6a05004a AD |
5570 | * DCA is enabled. This is due to a known issue in some chipsets |
5571 | * which will cause the DCA tag to be cleared. | |
5572 | */ | |
5573 | rxctrl |= E1000_DCA_RXCTRL_DESC_RRO_EN | | |
5574 | E1000_DCA_RXCTRL_DESC_DCA_EN; | |
5575 | ||
5576 | wr32(E1000_DCA_RXCTRL(rx_ring->reg_idx), rxctrl); | |
5577 | } | |
5578 | ||
047e0030 | 5579 | static void igb_update_dca(struct igb_q_vector *q_vector) |
fe4506b6 | 5580 | { |
047e0030 | 5581 | struct igb_adapter *adapter = q_vector->adapter; |
fe4506b6 | 5582 | int cpu = get_cpu(); |
fe4506b6 | 5583 | |
047e0030 AD |
5584 | if (q_vector->cpu == cpu) |
5585 | goto out_no_update; | |
5586 | ||
6a05004a AD |
5587 | if (q_vector->tx.ring) |
5588 | igb_update_tx_dca(adapter, q_vector->tx.ring, cpu); | |
5589 | ||
5590 | if (q_vector->rx.ring) | |
5591 | igb_update_rx_dca(adapter, q_vector->rx.ring, cpu); | |
5592 | ||
047e0030 AD |
5593 | q_vector->cpu = cpu; |
5594 | out_no_update: | |
fe4506b6 JC |
5595 | put_cpu(); |
5596 | } | |
5597 | ||
5598 | static void igb_setup_dca(struct igb_adapter *adapter) | |
5599 | { | |
7e0e99ef | 5600 | struct e1000_hw *hw = &adapter->hw; |
fe4506b6 JC |
5601 | int i; |
5602 | ||
7dfc16fa | 5603 | if (!(adapter->flags & IGB_FLAG_DCA_ENABLED)) |
fe4506b6 JC |
5604 | return; |
5605 | ||
7e0e99ef AD |
5606 | /* Always use CB2 mode, difference is masked in the CB driver. */ |
5607 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_CB2); | |
5608 | ||
047e0030 | 5609 | for (i = 0; i < adapter->num_q_vectors; i++) { |
26b39276 AD |
5610 | adapter->q_vector[i]->cpu = -1; |
5611 | igb_update_dca(adapter->q_vector[i]); | |
fe4506b6 JC |
5612 | } |
5613 | } | |
5614 | ||
5615 | static int __igb_notify_dca(struct device *dev, void *data) | |
5616 | { | |
5617 | struct net_device *netdev = dev_get_drvdata(dev); | |
5618 | struct igb_adapter *adapter = netdev_priv(netdev); | |
090b1795 | 5619 | struct pci_dev *pdev = adapter->pdev; |
fe4506b6 JC |
5620 | struct e1000_hw *hw = &adapter->hw; |
5621 | unsigned long event = *(unsigned long *)data; | |
5622 | ||
5623 | switch (event) { | |
5624 | case DCA_PROVIDER_ADD: | |
5625 | /* if already enabled, don't do it again */ | |
7dfc16fa | 5626 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) |
fe4506b6 | 5627 | break; |
fe4506b6 | 5628 | if (dca_add_requester(dev) == 0) { |
bbd98fe4 | 5629 | adapter->flags |= IGB_FLAG_DCA_ENABLED; |
090b1795 | 5630 | dev_info(&pdev->dev, "DCA enabled\n"); |
fe4506b6 JC |
5631 | igb_setup_dca(adapter); |
5632 | break; | |
5633 | } | |
5634 | /* Fall Through since DCA is disabled. */ | |
5635 | case DCA_PROVIDER_REMOVE: | |
7dfc16fa | 5636 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) { |
fe4506b6 | 5637 | /* without this a class_device is left |
b980ac18 JK |
5638 | * hanging around in the sysfs model |
5639 | */ | |
fe4506b6 | 5640 | dca_remove_requester(dev); |
090b1795 | 5641 | dev_info(&pdev->dev, "DCA disabled\n"); |
7dfc16fa | 5642 | adapter->flags &= ~IGB_FLAG_DCA_ENABLED; |
cbd347ad | 5643 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE); |
fe4506b6 JC |
5644 | } |
5645 | break; | |
5646 | } | |
bbd98fe4 | 5647 | |
fe4506b6 | 5648 | return 0; |
9d5c8243 AK |
5649 | } |
5650 | ||
fe4506b6 | 5651 | static int igb_notify_dca(struct notifier_block *nb, unsigned long event, |
b980ac18 | 5652 | void *p) |
fe4506b6 JC |
5653 | { |
5654 | int ret_val; | |
5655 | ||
5656 | ret_val = driver_for_each_device(&igb_driver.driver, NULL, &event, | |
b980ac18 | 5657 | __igb_notify_dca); |
fe4506b6 JC |
5658 | |
5659 | return ret_val ? NOTIFY_BAD : NOTIFY_DONE; | |
5660 | } | |
421e02f0 | 5661 | #endif /* CONFIG_IGB_DCA */ |
9d5c8243 | 5662 | |
0224d663 GR |
5663 | #ifdef CONFIG_PCI_IOV |
5664 | static int igb_vf_configure(struct igb_adapter *adapter, int vf) | |
5665 | { | |
5666 | unsigned char mac_addr[ETH_ALEN]; | |
0224d663 | 5667 | |
5ac6f91d | 5668 | eth_zero_addr(mac_addr); |
0224d663 GR |
5669 | igb_set_vf_mac(adapter, vf, mac_addr); |
5670 | ||
70ea4783 LL |
5671 | /* By default spoof check is enabled for all VFs */ |
5672 | adapter->vf_data[vf].spoofchk_enabled = true; | |
5673 | ||
f557147c | 5674 | return 0; |
0224d663 GR |
5675 | } |
5676 | ||
0224d663 | 5677 | #endif |
4ae196df AD |
5678 | static void igb_ping_all_vfs(struct igb_adapter *adapter) |
5679 | { | |
5680 | struct e1000_hw *hw = &adapter->hw; | |
5681 | u32 ping; | |
5682 | int i; | |
5683 | ||
5684 | for (i = 0 ; i < adapter->vfs_allocated_count; i++) { | |
5685 | ping = E1000_PF_CONTROL_MSG; | |
f2ca0dbe | 5686 | if (adapter->vf_data[i].flags & IGB_VF_FLAG_CTS) |
4ae196df AD |
5687 | ping |= E1000_VT_MSGTYPE_CTS; |
5688 | igb_write_mbx(hw, &ping, 1, i); | |
5689 | } | |
5690 | } | |
5691 | ||
7d5753f0 AD |
5692 | static int igb_set_vf_promisc(struct igb_adapter *adapter, u32 *msgbuf, u32 vf) |
5693 | { | |
5694 | struct e1000_hw *hw = &adapter->hw; | |
5695 | u32 vmolr = rd32(E1000_VMOLR(vf)); | |
5696 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; | |
5697 | ||
d85b9004 | 5698 | vf_data->flags &= ~(IGB_VF_FLAG_UNI_PROMISC | |
b980ac18 | 5699 | IGB_VF_FLAG_MULTI_PROMISC); |
7d5753f0 AD |
5700 | vmolr &= ~(E1000_VMOLR_ROPE | E1000_VMOLR_ROMPE | E1000_VMOLR_MPME); |
5701 | ||
5702 | if (*msgbuf & E1000_VF_SET_PROMISC_MULTICAST) { | |
5703 | vmolr |= E1000_VMOLR_MPME; | |
d85b9004 | 5704 | vf_data->flags |= IGB_VF_FLAG_MULTI_PROMISC; |
7d5753f0 AD |
5705 | *msgbuf &= ~E1000_VF_SET_PROMISC_MULTICAST; |
5706 | } else { | |
b980ac18 | 5707 | /* if we have hashes and we are clearing a multicast promisc |
7d5753f0 AD |
5708 | * flag we need to write the hashes to the MTA as this step |
5709 | * was previously skipped | |
5710 | */ | |
5711 | if (vf_data->num_vf_mc_hashes > 30) { | |
5712 | vmolr |= E1000_VMOLR_MPME; | |
5713 | } else if (vf_data->num_vf_mc_hashes) { | |
5714 | int j; | |
9005df38 | 5715 | |
7d5753f0 AD |
5716 | vmolr |= E1000_VMOLR_ROMPE; |
5717 | for (j = 0; j < vf_data->num_vf_mc_hashes; j++) | |
5718 | igb_mta_set(hw, vf_data->vf_mc_hashes[j]); | |
5719 | } | |
5720 | } | |
5721 | ||
5722 | wr32(E1000_VMOLR(vf), vmolr); | |
5723 | ||
5724 | /* there are flags left unprocessed, likely not supported */ | |
5725 | if (*msgbuf & E1000_VT_MSGINFO_MASK) | |
5726 | return -EINVAL; | |
5727 | ||
5728 | return 0; | |
7d5753f0 AD |
5729 | } |
5730 | ||
4ae196df AD |
5731 | static int igb_set_vf_multicasts(struct igb_adapter *adapter, |
5732 | u32 *msgbuf, u32 vf) | |
5733 | { | |
5734 | int n = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT; | |
5735 | u16 *hash_list = (u16 *)&msgbuf[1]; | |
5736 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; | |
5737 | int i; | |
5738 | ||
7d5753f0 | 5739 | /* salt away the number of multicast addresses assigned |
4ae196df AD |
5740 | * to this VF for later use to restore when the PF multi cast |
5741 | * list changes | |
5742 | */ | |
5743 | vf_data->num_vf_mc_hashes = n; | |
5744 | ||
7d5753f0 AD |
5745 | /* only up to 30 hash values supported */ |
5746 | if (n > 30) | |
5747 | n = 30; | |
5748 | ||
5749 | /* store the hashes for later use */ | |
4ae196df | 5750 | for (i = 0; i < n; i++) |
a419aef8 | 5751 | vf_data->vf_mc_hashes[i] = hash_list[i]; |
4ae196df AD |
5752 | |
5753 | /* Flush and reset the mta with the new values */ | |
ff41f8dc | 5754 | igb_set_rx_mode(adapter->netdev); |
4ae196df AD |
5755 | |
5756 | return 0; | |
5757 | } | |
5758 | ||
5759 | static void igb_restore_vf_multicasts(struct igb_adapter *adapter) | |
5760 | { | |
5761 | struct e1000_hw *hw = &adapter->hw; | |
5762 | struct vf_data_storage *vf_data; | |
5763 | int i, j; | |
5764 | ||
5765 | for (i = 0; i < adapter->vfs_allocated_count; i++) { | |
7d5753f0 | 5766 | u32 vmolr = rd32(E1000_VMOLR(i)); |
9005df38 | 5767 | |
7d5753f0 AD |
5768 | vmolr &= ~(E1000_VMOLR_ROMPE | E1000_VMOLR_MPME); |
5769 | ||
4ae196df | 5770 | vf_data = &adapter->vf_data[i]; |
7d5753f0 AD |
5771 | |
5772 | if ((vf_data->num_vf_mc_hashes > 30) || | |
5773 | (vf_data->flags & IGB_VF_FLAG_MULTI_PROMISC)) { | |
5774 | vmolr |= E1000_VMOLR_MPME; | |
5775 | } else if (vf_data->num_vf_mc_hashes) { | |
5776 | vmolr |= E1000_VMOLR_ROMPE; | |
5777 | for (j = 0; j < vf_data->num_vf_mc_hashes; j++) | |
5778 | igb_mta_set(hw, vf_data->vf_mc_hashes[j]); | |
5779 | } | |
5780 | wr32(E1000_VMOLR(i), vmolr); | |
4ae196df AD |
5781 | } |
5782 | } | |
5783 | ||
5784 | static void igb_clear_vf_vfta(struct igb_adapter *adapter, u32 vf) | |
5785 | { | |
5786 | struct e1000_hw *hw = &adapter->hw; | |
5787 | u32 pool_mask, reg, vid; | |
5788 | int i; | |
5789 | ||
5790 | pool_mask = 1 << (E1000_VLVF_POOLSEL_SHIFT + vf); | |
5791 | ||
5792 | /* Find the vlan filter for this id */ | |
5793 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { | |
5794 | reg = rd32(E1000_VLVF(i)); | |
5795 | ||
5796 | /* remove the vf from the pool */ | |
5797 | reg &= ~pool_mask; | |
5798 | ||
5799 | /* if pool is empty then remove entry from vfta */ | |
5800 | if (!(reg & E1000_VLVF_POOLSEL_MASK) && | |
5801 | (reg & E1000_VLVF_VLANID_ENABLE)) { | |
5802 | reg = 0; | |
5803 | vid = reg & E1000_VLVF_VLANID_MASK; | |
5804 | igb_vfta_set(hw, vid, false); | |
5805 | } | |
5806 | ||
5807 | wr32(E1000_VLVF(i), reg); | |
5808 | } | |
ae641bdc AD |
5809 | |
5810 | adapter->vf_data[vf].vlans_enabled = 0; | |
4ae196df AD |
5811 | } |
5812 | ||
5813 | static s32 igb_vlvf_set(struct igb_adapter *adapter, u32 vid, bool add, u32 vf) | |
5814 | { | |
5815 | struct e1000_hw *hw = &adapter->hw; | |
5816 | u32 reg, i; | |
5817 | ||
51466239 AD |
5818 | /* The vlvf table only exists on 82576 hardware and newer */ |
5819 | if (hw->mac.type < e1000_82576) | |
5820 | return -1; | |
5821 | ||
5822 | /* we only need to do this if VMDq is enabled */ | |
4ae196df AD |
5823 | if (!adapter->vfs_allocated_count) |
5824 | return -1; | |
5825 | ||
5826 | /* Find the vlan filter for this id */ | |
5827 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { | |
5828 | reg = rd32(E1000_VLVF(i)); | |
5829 | if ((reg & E1000_VLVF_VLANID_ENABLE) && | |
5830 | vid == (reg & E1000_VLVF_VLANID_MASK)) | |
5831 | break; | |
5832 | } | |
5833 | ||
5834 | if (add) { | |
5835 | if (i == E1000_VLVF_ARRAY_SIZE) { | |
5836 | /* Did not find a matching VLAN ID entry that was | |
5837 | * enabled. Search for a free filter entry, i.e. | |
5838 | * one without the enable bit set | |
5839 | */ | |
5840 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { | |
5841 | reg = rd32(E1000_VLVF(i)); | |
5842 | if (!(reg & E1000_VLVF_VLANID_ENABLE)) | |
5843 | break; | |
5844 | } | |
5845 | } | |
5846 | if (i < E1000_VLVF_ARRAY_SIZE) { | |
5847 | /* Found an enabled/available entry */ | |
5848 | reg |= 1 << (E1000_VLVF_POOLSEL_SHIFT + vf); | |
5849 | ||
5850 | /* if !enabled we need to set this up in vfta */ | |
5851 | if (!(reg & E1000_VLVF_VLANID_ENABLE)) { | |
51466239 AD |
5852 | /* add VID to filter table */ |
5853 | igb_vfta_set(hw, vid, true); | |
4ae196df AD |
5854 | reg |= E1000_VLVF_VLANID_ENABLE; |
5855 | } | |
cad6d05f AD |
5856 | reg &= ~E1000_VLVF_VLANID_MASK; |
5857 | reg |= vid; | |
4ae196df | 5858 | wr32(E1000_VLVF(i), reg); |
ae641bdc AD |
5859 | |
5860 | /* do not modify RLPML for PF devices */ | |
5861 | if (vf >= adapter->vfs_allocated_count) | |
5862 | return 0; | |
5863 | ||
5864 | if (!adapter->vf_data[vf].vlans_enabled) { | |
5865 | u32 size; | |
9005df38 | 5866 | |
ae641bdc AD |
5867 | reg = rd32(E1000_VMOLR(vf)); |
5868 | size = reg & E1000_VMOLR_RLPML_MASK; | |
5869 | size += 4; | |
5870 | reg &= ~E1000_VMOLR_RLPML_MASK; | |
5871 | reg |= size; | |
5872 | wr32(E1000_VMOLR(vf), reg); | |
5873 | } | |
ae641bdc | 5874 | |
51466239 | 5875 | adapter->vf_data[vf].vlans_enabled++; |
4ae196df AD |
5876 | } |
5877 | } else { | |
5878 | if (i < E1000_VLVF_ARRAY_SIZE) { | |
5879 | /* remove vf from the pool */ | |
5880 | reg &= ~(1 << (E1000_VLVF_POOLSEL_SHIFT + vf)); | |
5881 | /* if pool is empty then remove entry from vfta */ | |
5882 | if (!(reg & E1000_VLVF_POOLSEL_MASK)) { | |
5883 | reg = 0; | |
5884 | igb_vfta_set(hw, vid, false); | |
5885 | } | |
5886 | wr32(E1000_VLVF(i), reg); | |
ae641bdc AD |
5887 | |
5888 | /* do not modify RLPML for PF devices */ | |
5889 | if (vf >= adapter->vfs_allocated_count) | |
5890 | return 0; | |
5891 | ||
5892 | adapter->vf_data[vf].vlans_enabled--; | |
5893 | if (!adapter->vf_data[vf].vlans_enabled) { | |
5894 | u32 size; | |
9005df38 | 5895 | |
ae641bdc AD |
5896 | reg = rd32(E1000_VMOLR(vf)); |
5897 | size = reg & E1000_VMOLR_RLPML_MASK; | |
5898 | size -= 4; | |
5899 | reg &= ~E1000_VMOLR_RLPML_MASK; | |
5900 | reg |= size; | |
5901 | wr32(E1000_VMOLR(vf), reg); | |
5902 | } | |
4ae196df AD |
5903 | } |
5904 | } | |
8151d294 WM |
5905 | return 0; |
5906 | } | |
5907 | ||
5908 | static void igb_set_vmvir(struct igb_adapter *adapter, u32 vid, u32 vf) | |
5909 | { | |
5910 | struct e1000_hw *hw = &adapter->hw; | |
5911 | ||
5912 | if (vid) | |
5913 | wr32(E1000_VMVIR(vf), (vid | E1000_VMVIR_VLANA_DEFAULT)); | |
5914 | else | |
5915 | wr32(E1000_VMVIR(vf), 0); | |
5916 | } | |
5917 | ||
5918 | static int igb_ndo_set_vf_vlan(struct net_device *netdev, | |
5919 | int vf, u16 vlan, u8 qos) | |
5920 | { | |
5921 | int err = 0; | |
5922 | struct igb_adapter *adapter = netdev_priv(netdev); | |
5923 | ||
5924 | if ((vf >= adapter->vfs_allocated_count) || (vlan > 4095) || (qos > 7)) | |
5925 | return -EINVAL; | |
5926 | if (vlan || qos) { | |
5927 | err = igb_vlvf_set(adapter, vlan, !!vlan, vf); | |
5928 | if (err) | |
5929 | goto out; | |
5930 | igb_set_vmvir(adapter, vlan | (qos << VLAN_PRIO_SHIFT), vf); | |
5931 | igb_set_vmolr(adapter, vf, !vlan); | |
5932 | adapter->vf_data[vf].pf_vlan = vlan; | |
5933 | adapter->vf_data[vf].pf_qos = qos; | |
5934 | dev_info(&adapter->pdev->dev, | |
5935 | "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf); | |
5936 | if (test_bit(__IGB_DOWN, &adapter->state)) { | |
5937 | dev_warn(&adapter->pdev->dev, | |
b980ac18 | 5938 | "The VF VLAN has been set, but the PF device is not up.\n"); |
8151d294 | 5939 | dev_warn(&adapter->pdev->dev, |
b980ac18 | 5940 | "Bring the PF device up before attempting to use the VF device.\n"); |
8151d294 WM |
5941 | } |
5942 | } else { | |
5943 | igb_vlvf_set(adapter, adapter->vf_data[vf].pf_vlan, | |
b980ac18 | 5944 | false, vf); |
8151d294 WM |
5945 | igb_set_vmvir(adapter, vlan, vf); |
5946 | igb_set_vmolr(adapter, vf, true); | |
5947 | adapter->vf_data[vf].pf_vlan = 0; | |
5948 | adapter->vf_data[vf].pf_qos = 0; | |
b980ac18 | 5949 | } |
8151d294 | 5950 | out: |
b980ac18 | 5951 | return err; |
4ae196df AD |
5952 | } |
5953 | ||
6f3dc319 GR |
5954 | static int igb_find_vlvf_entry(struct igb_adapter *adapter, int vid) |
5955 | { | |
5956 | struct e1000_hw *hw = &adapter->hw; | |
5957 | int i; | |
5958 | u32 reg; | |
5959 | ||
5960 | /* Find the vlan filter for this id */ | |
5961 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { | |
5962 | reg = rd32(E1000_VLVF(i)); | |
5963 | if ((reg & E1000_VLVF_VLANID_ENABLE) && | |
5964 | vid == (reg & E1000_VLVF_VLANID_MASK)) | |
5965 | break; | |
5966 | } | |
5967 | ||
5968 | if (i >= E1000_VLVF_ARRAY_SIZE) | |
5969 | i = -1; | |
5970 | ||
5971 | return i; | |
5972 | } | |
5973 | ||
4ae196df AD |
5974 | static int igb_set_vf_vlan(struct igb_adapter *adapter, u32 *msgbuf, u32 vf) |
5975 | { | |
6f3dc319 | 5976 | struct e1000_hw *hw = &adapter->hw; |
4ae196df AD |
5977 | int add = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT; |
5978 | int vid = (msgbuf[1] & E1000_VLVF_VLANID_MASK); | |
6f3dc319 | 5979 | int err = 0; |
4ae196df | 5980 | |
6f3dc319 GR |
5981 | /* If in promiscuous mode we need to make sure the PF also has |
5982 | * the VLAN filter set. | |
5983 | */ | |
5984 | if (add && (adapter->netdev->flags & IFF_PROMISC)) | |
5985 | err = igb_vlvf_set(adapter, vid, add, | |
5986 | adapter->vfs_allocated_count); | |
5987 | if (err) | |
5988 | goto out; | |
5989 | ||
5990 | err = igb_vlvf_set(adapter, vid, add, vf); | |
5991 | ||
5992 | if (err) | |
5993 | goto out; | |
5994 | ||
5995 | /* Go through all the checks to see if the VLAN filter should | |
5996 | * be wiped completely. | |
5997 | */ | |
5998 | if (!add && (adapter->netdev->flags & IFF_PROMISC)) { | |
5999 | u32 vlvf, bits; | |
6f3dc319 | 6000 | int regndx = igb_find_vlvf_entry(adapter, vid); |
9005df38 | 6001 | |
6f3dc319 GR |
6002 | if (regndx < 0) |
6003 | goto out; | |
6004 | /* See if any other pools are set for this VLAN filter | |
6005 | * entry other than the PF. | |
6006 | */ | |
6007 | vlvf = bits = rd32(E1000_VLVF(regndx)); | |
6008 | bits &= 1 << (E1000_VLVF_POOLSEL_SHIFT + | |
6009 | adapter->vfs_allocated_count); | |
6010 | /* If the filter was removed then ensure PF pool bit | |
6011 | * is cleared if the PF only added itself to the pool | |
6012 | * because the PF is in promiscuous mode. | |
6013 | */ | |
6014 | if ((vlvf & VLAN_VID_MASK) == vid && | |
6015 | !test_bit(vid, adapter->active_vlans) && | |
6016 | !bits) | |
6017 | igb_vlvf_set(adapter, vid, add, | |
6018 | adapter->vfs_allocated_count); | |
6019 | } | |
6020 | ||
6021 | out: | |
6022 | return err; | |
4ae196df AD |
6023 | } |
6024 | ||
f2ca0dbe | 6025 | static inline void igb_vf_reset(struct igb_adapter *adapter, u32 vf) |
4ae196df | 6026 | { |
8fa7e0f7 GR |
6027 | /* clear flags - except flag that indicates PF has set the MAC */ |
6028 | adapter->vf_data[vf].flags &= IGB_VF_FLAG_PF_SET_MAC; | |
f2ca0dbe | 6029 | adapter->vf_data[vf].last_nack = jiffies; |
4ae196df AD |
6030 | |
6031 | /* reset offloads to defaults */ | |
8151d294 | 6032 | igb_set_vmolr(adapter, vf, true); |
4ae196df AD |
6033 | |
6034 | /* reset vlans for device */ | |
6035 | igb_clear_vf_vfta(adapter, vf); | |
8151d294 WM |
6036 | if (adapter->vf_data[vf].pf_vlan) |
6037 | igb_ndo_set_vf_vlan(adapter->netdev, vf, | |
6038 | adapter->vf_data[vf].pf_vlan, | |
6039 | adapter->vf_data[vf].pf_qos); | |
6040 | else | |
6041 | igb_clear_vf_vfta(adapter, vf); | |
4ae196df AD |
6042 | |
6043 | /* reset multicast table array for vf */ | |
6044 | adapter->vf_data[vf].num_vf_mc_hashes = 0; | |
6045 | ||
6046 | /* Flush and reset the mta with the new values */ | |
ff41f8dc | 6047 | igb_set_rx_mode(adapter->netdev); |
4ae196df AD |
6048 | } |
6049 | ||
f2ca0dbe AD |
6050 | static void igb_vf_reset_event(struct igb_adapter *adapter, u32 vf) |
6051 | { | |
6052 | unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses; | |
6053 | ||
5ac6f91d | 6054 | /* clear mac address as we were hotplug removed/added */ |
8151d294 | 6055 | if (!(adapter->vf_data[vf].flags & IGB_VF_FLAG_PF_SET_MAC)) |
5ac6f91d | 6056 | eth_zero_addr(vf_mac); |
f2ca0dbe AD |
6057 | |
6058 | /* process remaining reset events */ | |
6059 | igb_vf_reset(adapter, vf); | |
6060 | } | |
6061 | ||
6062 | static void igb_vf_reset_msg(struct igb_adapter *adapter, u32 vf) | |
4ae196df AD |
6063 | { |
6064 | struct e1000_hw *hw = &adapter->hw; | |
6065 | unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses; | |
ff41f8dc | 6066 | int rar_entry = hw->mac.rar_entry_count - (vf + 1); |
4ae196df AD |
6067 | u32 reg, msgbuf[3]; |
6068 | u8 *addr = (u8 *)(&msgbuf[1]); | |
6069 | ||
6070 | /* process all the same items cleared in a function level reset */ | |
f2ca0dbe | 6071 | igb_vf_reset(adapter, vf); |
4ae196df AD |
6072 | |
6073 | /* set vf mac address */ | |
26ad9178 | 6074 | igb_rar_set_qsel(adapter, vf_mac, rar_entry, vf); |
4ae196df AD |
6075 | |
6076 | /* enable transmit and receive for vf */ | |
6077 | reg = rd32(E1000_VFTE); | |
6078 | wr32(E1000_VFTE, reg | (1 << vf)); | |
6079 | reg = rd32(E1000_VFRE); | |
6080 | wr32(E1000_VFRE, reg | (1 << vf)); | |
6081 | ||
8fa7e0f7 | 6082 | adapter->vf_data[vf].flags |= IGB_VF_FLAG_CTS; |
4ae196df AD |
6083 | |
6084 | /* reply to reset with ack and vf mac address */ | |
6ddbc4cf AG |
6085 | if (!is_zero_ether_addr(vf_mac)) { |
6086 | msgbuf[0] = E1000_VF_RESET | E1000_VT_MSGTYPE_ACK; | |
6087 | memcpy(addr, vf_mac, ETH_ALEN); | |
6088 | } else { | |
6089 | msgbuf[0] = E1000_VF_RESET | E1000_VT_MSGTYPE_NACK; | |
6090 | } | |
4ae196df AD |
6091 | igb_write_mbx(hw, msgbuf, 3, vf); |
6092 | } | |
6093 | ||
6094 | static int igb_set_vf_mac_addr(struct igb_adapter *adapter, u32 *msg, int vf) | |
6095 | { | |
b980ac18 | 6096 | /* The VF MAC Address is stored in a packed array of bytes |
de42edde GR |
6097 | * starting at the second 32 bit word of the msg array |
6098 | */ | |
f2ca0dbe AD |
6099 | unsigned char *addr = (char *)&msg[1]; |
6100 | int err = -1; | |
4ae196df | 6101 | |
f2ca0dbe AD |
6102 | if (is_valid_ether_addr(addr)) |
6103 | err = igb_set_vf_mac(adapter, vf, addr); | |
4ae196df | 6104 | |
f2ca0dbe | 6105 | return err; |
4ae196df AD |
6106 | } |
6107 | ||
6108 | static void igb_rcv_ack_from_vf(struct igb_adapter *adapter, u32 vf) | |
6109 | { | |
6110 | struct e1000_hw *hw = &adapter->hw; | |
f2ca0dbe | 6111 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; |
4ae196df AD |
6112 | u32 msg = E1000_VT_MSGTYPE_NACK; |
6113 | ||
6114 | /* if device isn't clear to send it shouldn't be reading either */ | |
f2ca0dbe AD |
6115 | if (!(vf_data->flags & IGB_VF_FLAG_CTS) && |
6116 | time_after(jiffies, vf_data->last_nack + (2 * HZ))) { | |
4ae196df | 6117 | igb_write_mbx(hw, &msg, 1, vf); |
f2ca0dbe | 6118 | vf_data->last_nack = jiffies; |
4ae196df AD |
6119 | } |
6120 | } | |
6121 | ||
f2ca0dbe | 6122 | static void igb_rcv_msg_from_vf(struct igb_adapter *adapter, u32 vf) |
4ae196df | 6123 | { |
f2ca0dbe AD |
6124 | struct pci_dev *pdev = adapter->pdev; |
6125 | u32 msgbuf[E1000_VFMAILBOX_SIZE]; | |
4ae196df | 6126 | struct e1000_hw *hw = &adapter->hw; |
f2ca0dbe | 6127 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; |
4ae196df AD |
6128 | s32 retval; |
6129 | ||
f2ca0dbe | 6130 | retval = igb_read_mbx(hw, msgbuf, E1000_VFMAILBOX_SIZE, vf); |
4ae196df | 6131 | |
fef45f4c AD |
6132 | if (retval) { |
6133 | /* if receive failed revoke VF CTS stats and restart init */ | |
f2ca0dbe | 6134 | dev_err(&pdev->dev, "Error receiving message from VF\n"); |
fef45f4c AD |
6135 | vf_data->flags &= ~IGB_VF_FLAG_CTS; |
6136 | if (!time_after(jiffies, vf_data->last_nack + (2 * HZ))) | |
6137 | return; | |
6138 | goto out; | |
6139 | } | |
4ae196df AD |
6140 | |
6141 | /* this is a message we already processed, do nothing */ | |
6142 | if (msgbuf[0] & (E1000_VT_MSGTYPE_ACK | E1000_VT_MSGTYPE_NACK)) | |
f2ca0dbe | 6143 | return; |
4ae196df | 6144 | |
b980ac18 | 6145 | /* until the vf completes a reset it should not be |
4ae196df AD |
6146 | * allowed to start any configuration. |
6147 | */ | |
4ae196df AD |
6148 | if (msgbuf[0] == E1000_VF_RESET) { |
6149 | igb_vf_reset_msg(adapter, vf); | |
f2ca0dbe | 6150 | return; |
4ae196df AD |
6151 | } |
6152 | ||
f2ca0dbe | 6153 | if (!(vf_data->flags & IGB_VF_FLAG_CTS)) { |
fef45f4c AD |
6154 | if (!time_after(jiffies, vf_data->last_nack + (2 * HZ))) |
6155 | return; | |
6156 | retval = -1; | |
6157 | goto out; | |
4ae196df AD |
6158 | } |
6159 | ||
6160 | switch ((msgbuf[0] & 0xFFFF)) { | |
6161 | case E1000_VF_SET_MAC_ADDR: | |
a6b5ea35 GR |
6162 | retval = -EINVAL; |
6163 | if (!(vf_data->flags & IGB_VF_FLAG_PF_SET_MAC)) | |
6164 | retval = igb_set_vf_mac_addr(adapter, msgbuf, vf); | |
6165 | else | |
6166 | dev_warn(&pdev->dev, | |
b980ac18 JK |
6167 | "VF %d attempted to override administratively set MAC address\nReload the VF driver to resume operations\n", |
6168 | vf); | |
4ae196df | 6169 | break; |
7d5753f0 AD |
6170 | case E1000_VF_SET_PROMISC: |
6171 | retval = igb_set_vf_promisc(adapter, msgbuf, vf); | |
6172 | break; | |
4ae196df AD |
6173 | case E1000_VF_SET_MULTICAST: |
6174 | retval = igb_set_vf_multicasts(adapter, msgbuf, vf); | |
6175 | break; | |
6176 | case E1000_VF_SET_LPE: | |
6177 | retval = igb_set_vf_rlpml(adapter, msgbuf[1], vf); | |
6178 | break; | |
6179 | case E1000_VF_SET_VLAN: | |
a6b5ea35 GR |
6180 | retval = -1; |
6181 | if (vf_data->pf_vlan) | |
6182 | dev_warn(&pdev->dev, | |
b980ac18 JK |
6183 | "VF %d attempted to override administratively set VLAN tag\nReload the VF driver to resume operations\n", |
6184 | vf); | |
8151d294 WM |
6185 | else |
6186 | retval = igb_set_vf_vlan(adapter, msgbuf, vf); | |
4ae196df AD |
6187 | break; |
6188 | default: | |
090b1795 | 6189 | dev_err(&pdev->dev, "Unhandled Msg %08x\n", msgbuf[0]); |
4ae196df AD |
6190 | retval = -1; |
6191 | break; | |
6192 | } | |
6193 | ||
fef45f4c AD |
6194 | msgbuf[0] |= E1000_VT_MSGTYPE_CTS; |
6195 | out: | |
4ae196df AD |
6196 | /* notify the VF of the results of what it sent us */ |
6197 | if (retval) | |
6198 | msgbuf[0] |= E1000_VT_MSGTYPE_NACK; | |
6199 | else | |
6200 | msgbuf[0] |= E1000_VT_MSGTYPE_ACK; | |
6201 | ||
4ae196df | 6202 | igb_write_mbx(hw, msgbuf, 1, vf); |
f2ca0dbe | 6203 | } |
4ae196df | 6204 | |
f2ca0dbe AD |
6205 | static void igb_msg_task(struct igb_adapter *adapter) |
6206 | { | |
6207 | struct e1000_hw *hw = &adapter->hw; | |
6208 | u32 vf; | |
6209 | ||
6210 | for (vf = 0; vf < adapter->vfs_allocated_count; vf++) { | |
6211 | /* process any reset requests */ | |
6212 | if (!igb_check_for_rst(hw, vf)) | |
6213 | igb_vf_reset_event(adapter, vf); | |
6214 | ||
6215 | /* process any messages pending */ | |
6216 | if (!igb_check_for_msg(hw, vf)) | |
6217 | igb_rcv_msg_from_vf(adapter, vf); | |
6218 | ||
6219 | /* process any acks */ | |
6220 | if (!igb_check_for_ack(hw, vf)) | |
6221 | igb_rcv_ack_from_vf(adapter, vf); | |
6222 | } | |
4ae196df AD |
6223 | } |
6224 | ||
68d480c4 AD |
6225 | /** |
6226 | * igb_set_uta - Set unicast filter table address | |
6227 | * @adapter: board private structure | |
6228 | * | |
6229 | * The unicast table address is a register array of 32-bit registers. | |
6230 | * The table is meant to be used in a way similar to how the MTA is used | |
6231 | * however due to certain limitations in the hardware it is necessary to | |
25985edc LDM |
6232 | * set all the hash bits to 1 and use the VMOLR ROPE bit as a promiscuous |
6233 | * enable bit to allow vlan tag stripping when promiscuous mode is enabled | |
68d480c4 AD |
6234 | **/ |
6235 | static void igb_set_uta(struct igb_adapter *adapter) | |
6236 | { | |
6237 | struct e1000_hw *hw = &adapter->hw; | |
6238 | int i; | |
6239 | ||
6240 | /* The UTA table only exists on 82576 hardware and newer */ | |
6241 | if (hw->mac.type < e1000_82576) | |
6242 | return; | |
6243 | ||
6244 | /* we only need to do this if VMDq is enabled */ | |
6245 | if (!adapter->vfs_allocated_count) | |
6246 | return; | |
6247 | ||
6248 | for (i = 0; i < hw->mac.uta_reg_count; i++) | |
6249 | array_wr32(E1000_UTA, i, ~0); | |
6250 | } | |
6251 | ||
9d5c8243 | 6252 | /** |
b980ac18 JK |
6253 | * igb_intr_msi - Interrupt Handler |
6254 | * @irq: interrupt number | |
6255 | * @data: pointer to a network interface device structure | |
9d5c8243 AK |
6256 | **/ |
6257 | static irqreturn_t igb_intr_msi(int irq, void *data) | |
6258 | { | |
047e0030 AD |
6259 | struct igb_adapter *adapter = data; |
6260 | struct igb_q_vector *q_vector = adapter->q_vector[0]; | |
9d5c8243 AK |
6261 | struct e1000_hw *hw = &adapter->hw; |
6262 | /* read ICR disables interrupts using IAM */ | |
6263 | u32 icr = rd32(E1000_ICR); | |
6264 | ||
047e0030 | 6265 | igb_write_itr(q_vector); |
9d5c8243 | 6266 | |
7f081d40 AD |
6267 | if (icr & E1000_ICR_DRSTA) |
6268 | schedule_work(&adapter->reset_task); | |
6269 | ||
047e0030 | 6270 | if (icr & E1000_ICR_DOUTSYNC) { |
dda0e083 AD |
6271 | /* HW is reporting DMA is out of sync */ |
6272 | adapter->stats.doosync++; | |
6273 | } | |
6274 | ||
9d5c8243 AK |
6275 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
6276 | hw->mac.get_link_status = 1; | |
6277 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
6278 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
6279 | } | |
6280 | ||
61d7f75f RC |
6281 | if (icr & E1000_ICR_TS) |
6282 | igb_tsync_interrupt(adapter); | |
1f6e8178 | 6283 | |
047e0030 | 6284 | napi_schedule(&q_vector->napi); |
9d5c8243 AK |
6285 | |
6286 | return IRQ_HANDLED; | |
6287 | } | |
6288 | ||
6289 | /** | |
b980ac18 JK |
6290 | * igb_intr - Legacy Interrupt Handler |
6291 | * @irq: interrupt number | |
6292 | * @data: pointer to a network interface device structure | |
9d5c8243 AK |
6293 | **/ |
6294 | static irqreturn_t igb_intr(int irq, void *data) | |
6295 | { | |
047e0030 AD |
6296 | struct igb_adapter *adapter = data; |
6297 | struct igb_q_vector *q_vector = adapter->q_vector[0]; | |
9d5c8243 AK |
6298 | struct e1000_hw *hw = &adapter->hw; |
6299 | /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No | |
b980ac18 JK |
6300 | * need for the IMC write |
6301 | */ | |
9d5c8243 | 6302 | u32 icr = rd32(E1000_ICR); |
9d5c8243 AK |
6303 | |
6304 | /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is | |
b980ac18 JK |
6305 | * not set, then the adapter didn't send an interrupt |
6306 | */ | |
9d5c8243 AK |
6307 | if (!(icr & E1000_ICR_INT_ASSERTED)) |
6308 | return IRQ_NONE; | |
6309 | ||
0ba82994 AD |
6310 | igb_write_itr(q_vector); |
6311 | ||
7f081d40 AD |
6312 | if (icr & E1000_ICR_DRSTA) |
6313 | schedule_work(&adapter->reset_task); | |
6314 | ||
047e0030 | 6315 | if (icr & E1000_ICR_DOUTSYNC) { |
dda0e083 AD |
6316 | /* HW is reporting DMA is out of sync */ |
6317 | adapter->stats.doosync++; | |
6318 | } | |
6319 | ||
9d5c8243 AK |
6320 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
6321 | hw->mac.get_link_status = 1; | |
6322 | /* guard against interrupt when we're going down */ | |
6323 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
6324 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
6325 | } | |
6326 | ||
61d7f75f RC |
6327 | if (icr & E1000_ICR_TS) |
6328 | igb_tsync_interrupt(adapter); | |
1f6e8178 | 6329 | |
047e0030 | 6330 | napi_schedule(&q_vector->napi); |
9d5c8243 AK |
6331 | |
6332 | return IRQ_HANDLED; | |
6333 | } | |
6334 | ||
c50b52a0 | 6335 | static void igb_ring_irq_enable(struct igb_q_vector *q_vector) |
9d5c8243 | 6336 | { |
047e0030 | 6337 | struct igb_adapter *adapter = q_vector->adapter; |
46544258 | 6338 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 | 6339 | |
0ba82994 AD |
6340 | if ((q_vector->rx.ring && (adapter->rx_itr_setting & 3)) || |
6341 | (!q_vector->rx.ring && (adapter->tx_itr_setting & 3))) { | |
6342 | if ((adapter->num_q_vectors == 1) && !adapter->vf_data) | |
6343 | igb_set_itr(q_vector); | |
46544258 | 6344 | else |
047e0030 | 6345 | igb_update_ring_itr(q_vector); |
9d5c8243 AK |
6346 | } |
6347 | ||
46544258 | 6348 | if (!test_bit(__IGB_DOWN, &adapter->state)) { |
cd14ef54 | 6349 | if (adapter->flags & IGB_FLAG_HAS_MSIX) |
047e0030 | 6350 | wr32(E1000_EIMS, q_vector->eims_value); |
46544258 AD |
6351 | else |
6352 | igb_irq_enable(adapter); | |
6353 | } | |
9d5c8243 AK |
6354 | } |
6355 | ||
46544258 | 6356 | /** |
b980ac18 JK |
6357 | * igb_poll - NAPI Rx polling callback |
6358 | * @napi: napi polling structure | |
6359 | * @budget: count of how many packets we should handle | |
46544258 AD |
6360 | **/ |
6361 | static int igb_poll(struct napi_struct *napi, int budget) | |
9d5c8243 | 6362 | { |
047e0030 | 6363 | struct igb_q_vector *q_vector = container_of(napi, |
b980ac18 JK |
6364 | struct igb_q_vector, |
6365 | napi); | |
16eb8815 | 6366 | bool clean_complete = true; |
32b3e08f | 6367 | int work_done = 0; |
9d5c8243 | 6368 | |
421e02f0 | 6369 | #ifdef CONFIG_IGB_DCA |
047e0030 AD |
6370 | if (q_vector->adapter->flags & IGB_FLAG_DCA_ENABLED) |
6371 | igb_update_dca(q_vector); | |
fe4506b6 | 6372 | #endif |
0ba82994 | 6373 | if (q_vector->tx.ring) |
13fde97a | 6374 | clean_complete = igb_clean_tx_irq(q_vector); |
9d5c8243 | 6375 | |
32b3e08f JB |
6376 | if (q_vector->rx.ring) { |
6377 | int cleaned = igb_clean_rx_irq(q_vector, budget); | |
6378 | ||
6379 | work_done += cleaned; | |
6380 | clean_complete &= (cleaned < budget); | |
6381 | } | |
047e0030 | 6382 | |
16eb8815 AD |
6383 | /* If all work not completed, return budget and keep polling */ |
6384 | if (!clean_complete) | |
6385 | return budget; | |
46544258 | 6386 | |
9d5c8243 | 6387 | /* If not enough Rx work done, exit the polling mode */ |
32b3e08f | 6388 | napi_complete_done(napi, work_done); |
16eb8815 | 6389 | igb_ring_irq_enable(q_vector); |
9d5c8243 | 6390 | |
16eb8815 | 6391 | return 0; |
9d5c8243 | 6392 | } |
6d8126f9 | 6393 | |
9d5c8243 | 6394 | /** |
b980ac18 JK |
6395 | * igb_clean_tx_irq - Reclaim resources after transmit completes |
6396 | * @q_vector: pointer to q_vector containing needed info | |
49ce9c2c | 6397 | * |
b980ac18 | 6398 | * returns true if ring is completely cleaned |
9d5c8243 | 6399 | **/ |
047e0030 | 6400 | static bool igb_clean_tx_irq(struct igb_q_vector *q_vector) |
9d5c8243 | 6401 | { |
047e0030 | 6402 | struct igb_adapter *adapter = q_vector->adapter; |
0ba82994 | 6403 | struct igb_ring *tx_ring = q_vector->tx.ring; |
06034649 | 6404 | struct igb_tx_buffer *tx_buffer; |
f4128785 | 6405 | union e1000_adv_tx_desc *tx_desc; |
9d5c8243 | 6406 | unsigned int total_bytes = 0, total_packets = 0; |
0ba82994 | 6407 | unsigned int budget = q_vector->tx.work_limit; |
8542db05 | 6408 | unsigned int i = tx_ring->next_to_clean; |
9d5c8243 | 6409 | |
13fde97a AD |
6410 | if (test_bit(__IGB_DOWN, &adapter->state)) |
6411 | return true; | |
0e014cb1 | 6412 | |
06034649 | 6413 | tx_buffer = &tx_ring->tx_buffer_info[i]; |
13fde97a | 6414 | tx_desc = IGB_TX_DESC(tx_ring, i); |
8542db05 | 6415 | i -= tx_ring->count; |
9d5c8243 | 6416 | |
f4128785 AD |
6417 | do { |
6418 | union e1000_adv_tx_desc *eop_desc = tx_buffer->next_to_watch; | |
8542db05 AD |
6419 | |
6420 | /* if next_to_watch is not set then there is no work pending */ | |
6421 | if (!eop_desc) | |
6422 | break; | |
13fde97a | 6423 | |
f4128785 | 6424 | /* prevent any other reads prior to eop_desc */ |
70d289bc | 6425 | read_barrier_depends(); |
f4128785 | 6426 | |
13fde97a AD |
6427 | /* if DD is not set pending work has not been completed */ |
6428 | if (!(eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD))) | |
6429 | break; | |
6430 | ||
8542db05 AD |
6431 | /* clear next_to_watch to prevent false hangs */ |
6432 | tx_buffer->next_to_watch = NULL; | |
9d5c8243 | 6433 | |
ebe42d16 AD |
6434 | /* update the statistics for this packet */ |
6435 | total_bytes += tx_buffer->bytecount; | |
6436 | total_packets += tx_buffer->gso_segs; | |
13fde97a | 6437 | |
ebe42d16 | 6438 | /* free the skb */ |
a81fb049 | 6439 | dev_consume_skb_any(tx_buffer->skb); |
13fde97a | 6440 | |
ebe42d16 AD |
6441 | /* unmap skb header data */ |
6442 | dma_unmap_single(tx_ring->dev, | |
c9f14bf3 AD |
6443 | dma_unmap_addr(tx_buffer, dma), |
6444 | dma_unmap_len(tx_buffer, len), | |
ebe42d16 AD |
6445 | DMA_TO_DEVICE); |
6446 | ||
c9f14bf3 AD |
6447 | /* clear tx_buffer data */ |
6448 | tx_buffer->skb = NULL; | |
6449 | dma_unmap_len_set(tx_buffer, len, 0); | |
6450 | ||
ebe42d16 AD |
6451 | /* clear last DMA location and unmap remaining buffers */ |
6452 | while (tx_desc != eop_desc) { | |
13fde97a AD |
6453 | tx_buffer++; |
6454 | tx_desc++; | |
9d5c8243 | 6455 | i++; |
8542db05 AD |
6456 | if (unlikely(!i)) { |
6457 | i -= tx_ring->count; | |
06034649 | 6458 | tx_buffer = tx_ring->tx_buffer_info; |
13fde97a AD |
6459 | tx_desc = IGB_TX_DESC(tx_ring, 0); |
6460 | } | |
ebe42d16 AD |
6461 | |
6462 | /* unmap any remaining paged data */ | |
c9f14bf3 | 6463 | if (dma_unmap_len(tx_buffer, len)) { |
ebe42d16 | 6464 | dma_unmap_page(tx_ring->dev, |
c9f14bf3 AD |
6465 | dma_unmap_addr(tx_buffer, dma), |
6466 | dma_unmap_len(tx_buffer, len), | |
ebe42d16 | 6467 | DMA_TO_DEVICE); |
c9f14bf3 | 6468 | dma_unmap_len_set(tx_buffer, len, 0); |
ebe42d16 AD |
6469 | } |
6470 | } | |
6471 | ||
ebe42d16 AD |
6472 | /* move us one more past the eop_desc for start of next pkt */ |
6473 | tx_buffer++; | |
6474 | tx_desc++; | |
6475 | i++; | |
6476 | if (unlikely(!i)) { | |
6477 | i -= tx_ring->count; | |
6478 | tx_buffer = tx_ring->tx_buffer_info; | |
6479 | tx_desc = IGB_TX_DESC(tx_ring, 0); | |
6480 | } | |
f4128785 AD |
6481 | |
6482 | /* issue prefetch for next Tx descriptor */ | |
6483 | prefetch(tx_desc); | |
6484 | ||
6485 | /* update budget accounting */ | |
6486 | budget--; | |
6487 | } while (likely(budget)); | |
0e014cb1 | 6488 | |
bdbc0631 ED |
6489 | netdev_tx_completed_queue(txring_txq(tx_ring), |
6490 | total_packets, total_bytes); | |
8542db05 | 6491 | i += tx_ring->count; |
9d5c8243 | 6492 | tx_ring->next_to_clean = i; |
13fde97a AD |
6493 | u64_stats_update_begin(&tx_ring->tx_syncp); |
6494 | tx_ring->tx_stats.bytes += total_bytes; | |
6495 | tx_ring->tx_stats.packets += total_packets; | |
6496 | u64_stats_update_end(&tx_ring->tx_syncp); | |
0ba82994 AD |
6497 | q_vector->tx.total_bytes += total_bytes; |
6498 | q_vector->tx.total_packets += total_packets; | |
9d5c8243 | 6499 | |
6d095fa8 | 6500 | if (test_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags)) { |
13fde97a | 6501 | struct e1000_hw *hw = &adapter->hw; |
12dcd86b | 6502 | |
9d5c8243 | 6503 | /* Detect a transmit hang in hardware, this serializes the |
b980ac18 JK |
6504 | * check with the clearing of time_stamp and movement of i |
6505 | */ | |
6d095fa8 | 6506 | clear_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags); |
f4128785 | 6507 | if (tx_buffer->next_to_watch && |
8542db05 | 6508 | time_after(jiffies, tx_buffer->time_stamp + |
8e95a202 JP |
6509 | (adapter->tx_timeout_factor * HZ)) && |
6510 | !(rd32(E1000_STATUS) & E1000_STATUS_TXOFF)) { | |
9d5c8243 | 6511 | |
9d5c8243 | 6512 | /* detected Tx unit hang */ |
59d71989 | 6513 | dev_err(tx_ring->dev, |
9d5c8243 | 6514 | "Detected Tx Unit Hang\n" |
2d064c06 | 6515 | " Tx Queue <%d>\n" |
9d5c8243 AK |
6516 | " TDH <%x>\n" |
6517 | " TDT <%x>\n" | |
6518 | " next_to_use <%x>\n" | |
6519 | " next_to_clean <%x>\n" | |
9d5c8243 AK |
6520 | "buffer_info[next_to_clean]\n" |
6521 | " time_stamp <%lx>\n" | |
8542db05 | 6522 | " next_to_watch <%p>\n" |
9d5c8243 AK |
6523 | " jiffies <%lx>\n" |
6524 | " desc.status <%x>\n", | |
2d064c06 | 6525 | tx_ring->queue_index, |
238ac817 | 6526 | rd32(E1000_TDH(tx_ring->reg_idx)), |
fce99e34 | 6527 | readl(tx_ring->tail), |
9d5c8243 AK |
6528 | tx_ring->next_to_use, |
6529 | tx_ring->next_to_clean, | |
8542db05 | 6530 | tx_buffer->time_stamp, |
f4128785 | 6531 | tx_buffer->next_to_watch, |
9d5c8243 | 6532 | jiffies, |
f4128785 | 6533 | tx_buffer->next_to_watch->wb.status); |
13fde97a AD |
6534 | netif_stop_subqueue(tx_ring->netdev, |
6535 | tx_ring->queue_index); | |
6536 | ||
6537 | /* we are about to reset, no point in enabling stuff */ | |
6538 | return true; | |
9d5c8243 AK |
6539 | } |
6540 | } | |
13fde97a | 6541 | |
21ba6fe1 | 6542 | #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2) |
13fde97a | 6543 | if (unlikely(total_packets && |
b980ac18 JK |
6544 | netif_carrier_ok(tx_ring->netdev) && |
6545 | igb_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD)) { | |
13fde97a AD |
6546 | /* Make sure that anybody stopping the queue after this |
6547 | * sees the new next_to_clean. | |
6548 | */ | |
6549 | smp_mb(); | |
6550 | if (__netif_subqueue_stopped(tx_ring->netdev, | |
6551 | tx_ring->queue_index) && | |
6552 | !(test_bit(__IGB_DOWN, &adapter->state))) { | |
6553 | netif_wake_subqueue(tx_ring->netdev, | |
6554 | tx_ring->queue_index); | |
6555 | ||
6556 | u64_stats_update_begin(&tx_ring->tx_syncp); | |
6557 | tx_ring->tx_stats.restart_queue++; | |
6558 | u64_stats_update_end(&tx_ring->tx_syncp); | |
6559 | } | |
6560 | } | |
6561 | ||
6562 | return !!budget; | |
9d5c8243 AK |
6563 | } |
6564 | ||
cbc8e55f | 6565 | /** |
b980ac18 JK |
6566 | * igb_reuse_rx_page - page flip buffer and store it back on the ring |
6567 | * @rx_ring: rx descriptor ring to store buffers on | |
6568 | * @old_buff: donor buffer to have page reused | |
cbc8e55f | 6569 | * |
b980ac18 | 6570 | * Synchronizes page for reuse by the adapter |
cbc8e55f AD |
6571 | **/ |
6572 | static void igb_reuse_rx_page(struct igb_ring *rx_ring, | |
6573 | struct igb_rx_buffer *old_buff) | |
6574 | { | |
6575 | struct igb_rx_buffer *new_buff; | |
6576 | u16 nta = rx_ring->next_to_alloc; | |
6577 | ||
6578 | new_buff = &rx_ring->rx_buffer_info[nta]; | |
6579 | ||
6580 | /* update, and store next to alloc */ | |
6581 | nta++; | |
6582 | rx_ring->next_to_alloc = (nta < rx_ring->count) ? nta : 0; | |
6583 | ||
6584 | /* transfer page from old buffer to new buffer */ | |
a1f63473 | 6585 | *new_buff = *old_buff; |
cbc8e55f AD |
6586 | |
6587 | /* sync the buffer for use by the device */ | |
6588 | dma_sync_single_range_for_device(rx_ring->dev, old_buff->dma, | |
6589 | old_buff->page_offset, | |
de78d1f9 | 6590 | IGB_RX_BUFSZ, |
cbc8e55f AD |
6591 | DMA_FROM_DEVICE); |
6592 | } | |
6593 | ||
95dd44b4 AD |
6594 | static inline bool igb_page_is_reserved(struct page *page) |
6595 | { | |
2f064f34 | 6596 | return (page_to_nid(page) != numa_mem_id()) || page_is_pfmemalloc(page); |
95dd44b4 AD |
6597 | } |
6598 | ||
74e238ea AD |
6599 | static bool igb_can_reuse_rx_page(struct igb_rx_buffer *rx_buffer, |
6600 | struct page *page, | |
6601 | unsigned int truesize) | |
6602 | { | |
6603 | /* avoid re-using remote pages */ | |
95dd44b4 | 6604 | if (unlikely(igb_page_is_reserved(page))) |
bc16e47f RG |
6605 | return false; |
6606 | ||
74e238ea AD |
6607 | #if (PAGE_SIZE < 8192) |
6608 | /* if we are only owner of page we can reuse it */ | |
6609 | if (unlikely(page_count(page) != 1)) | |
6610 | return false; | |
6611 | ||
6612 | /* flip page offset to other buffer */ | |
6613 | rx_buffer->page_offset ^= IGB_RX_BUFSZ; | |
74e238ea AD |
6614 | #else |
6615 | /* move offset up to the next cache line */ | |
6616 | rx_buffer->page_offset += truesize; | |
6617 | ||
6618 | if (rx_buffer->page_offset > (PAGE_SIZE - IGB_RX_BUFSZ)) | |
6619 | return false; | |
74e238ea AD |
6620 | #endif |
6621 | ||
95dd44b4 AD |
6622 | /* Even if we own the page, we are not allowed to use atomic_set() |
6623 | * This would break get_page_unless_zero() users. | |
6624 | */ | |
6625 | atomic_inc(&page->_count); | |
6626 | ||
74e238ea AD |
6627 | return true; |
6628 | } | |
6629 | ||
cbc8e55f | 6630 | /** |
b980ac18 JK |
6631 | * igb_add_rx_frag - Add contents of Rx buffer to sk_buff |
6632 | * @rx_ring: rx descriptor ring to transact packets on | |
6633 | * @rx_buffer: buffer containing page to add | |
6634 | * @rx_desc: descriptor containing length of buffer written by hardware | |
6635 | * @skb: sk_buff to place the data into | |
cbc8e55f | 6636 | * |
b980ac18 JK |
6637 | * This function will add the data contained in rx_buffer->page to the skb. |
6638 | * This is done either through a direct copy if the data in the buffer is | |
6639 | * less than the skb header size, otherwise it will just attach the page as | |
6640 | * a frag to the skb. | |
cbc8e55f | 6641 | * |
b980ac18 JK |
6642 | * The function will then update the page offset if necessary and return |
6643 | * true if the buffer can be reused by the adapter. | |
cbc8e55f AD |
6644 | **/ |
6645 | static bool igb_add_rx_frag(struct igb_ring *rx_ring, | |
6646 | struct igb_rx_buffer *rx_buffer, | |
6647 | union e1000_adv_rx_desc *rx_desc, | |
6648 | struct sk_buff *skb) | |
6649 | { | |
6650 | struct page *page = rx_buffer->page; | |
f56e7bba | 6651 | unsigned char *va = page_address(page) + rx_buffer->page_offset; |
cbc8e55f | 6652 | unsigned int size = le16_to_cpu(rx_desc->wb.upper.length); |
74e238ea AD |
6653 | #if (PAGE_SIZE < 8192) |
6654 | unsigned int truesize = IGB_RX_BUFSZ; | |
6655 | #else | |
f56e7bba | 6656 | unsigned int truesize = SKB_DATA_ALIGN(size); |
74e238ea | 6657 | #endif |
f56e7bba | 6658 | unsigned int pull_len; |
cbc8e55f | 6659 | |
f56e7bba AD |
6660 | if (unlikely(skb_is_nonlinear(skb))) |
6661 | goto add_tail_frag; | |
cbc8e55f | 6662 | |
f56e7bba AD |
6663 | if (unlikely(igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TSIP))) { |
6664 | igb_ptp_rx_pktstamp(rx_ring->q_vector, va, skb); | |
6665 | va += IGB_TS_HDR_LEN; | |
6666 | size -= IGB_TS_HDR_LEN; | |
6667 | } | |
cbc8e55f | 6668 | |
f56e7bba | 6669 | if (likely(size <= IGB_RX_HDR_LEN)) { |
cbc8e55f AD |
6670 | memcpy(__skb_put(skb, size), va, ALIGN(size, sizeof(long))); |
6671 | ||
95dd44b4 AD |
6672 | /* page is not reserved, we can reuse buffer as-is */ |
6673 | if (likely(!igb_page_is_reserved(page))) | |
cbc8e55f AD |
6674 | return true; |
6675 | ||
6676 | /* this page cannot be reused so discard it */ | |
95dd44b4 | 6677 | __free_page(page); |
cbc8e55f AD |
6678 | return false; |
6679 | } | |
6680 | ||
f56e7bba AD |
6681 | /* we need the header to contain the greater of either ETH_HLEN or |
6682 | * 60 bytes if the skb->len is less than 60 for skb_pad. | |
6683 | */ | |
6684 | pull_len = eth_get_headlen(va, IGB_RX_HDR_LEN); | |
6685 | ||
6686 | /* align pull length to size of long to optimize memcpy performance */ | |
6687 | memcpy(__skb_put(skb, pull_len), va, ALIGN(pull_len, sizeof(long))); | |
6688 | ||
6689 | /* update all of the pointers */ | |
6690 | va += pull_len; | |
6691 | size -= pull_len; | |
6692 | ||
6693 | add_tail_frag: | |
cbc8e55f | 6694 | skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, page, |
f56e7bba | 6695 | (unsigned long)va & ~PAGE_MASK, size, truesize); |
cbc8e55f | 6696 | |
74e238ea AD |
6697 | return igb_can_reuse_rx_page(rx_buffer, page, truesize); |
6698 | } | |
cbc8e55f | 6699 | |
2e334eee AD |
6700 | static struct sk_buff *igb_fetch_rx_buffer(struct igb_ring *rx_ring, |
6701 | union e1000_adv_rx_desc *rx_desc, | |
6702 | struct sk_buff *skb) | |
6703 | { | |
6704 | struct igb_rx_buffer *rx_buffer; | |
6705 | struct page *page; | |
6706 | ||
6707 | rx_buffer = &rx_ring->rx_buffer_info[rx_ring->next_to_clean]; | |
2e334eee AD |
6708 | page = rx_buffer->page; |
6709 | prefetchw(page); | |
6710 | ||
6711 | if (likely(!skb)) { | |
6712 | void *page_addr = page_address(page) + | |
6713 | rx_buffer->page_offset; | |
6714 | ||
6715 | /* prefetch first cache line of first page */ | |
6716 | prefetch(page_addr); | |
6717 | #if L1_CACHE_BYTES < 128 | |
6718 | prefetch(page_addr + L1_CACHE_BYTES); | |
6719 | #endif | |
6720 | ||
6721 | /* allocate a skb to store the frags */ | |
67fd893e | 6722 | skb = napi_alloc_skb(&rx_ring->q_vector->napi, IGB_RX_HDR_LEN); |
2e334eee AD |
6723 | if (unlikely(!skb)) { |
6724 | rx_ring->rx_stats.alloc_failed++; | |
6725 | return NULL; | |
6726 | } | |
6727 | ||
b980ac18 | 6728 | /* we will be copying header into skb->data in |
2e334eee AD |
6729 | * pskb_may_pull so it is in our interest to prefetch |
6730 | * it now to avoid a possible cache miss | |
6731 | */ | |
6732 | prefetchw(skb->data); | |
6733 | } | |
6734 | ||
6735 | /* we are reusing so sync this buffer for CPU use */ | |
6736 | dma_sync_single_range_for_cpu(rx_ring->dev, | |
6737 | rx_buffer->dma, | |
6738 | rx_buffer->page_offset, | |
de78d1f9 | 6739 | IGB_RX_BUFSZ, |
2e334eee AD |
6740 | DMA_FROM_DEVICE); |
6741 | ||
6742 | /* pull page into skb */ | |
6743 | if (igb_add_rx_frag(rx_ring, rx_buffer, rx_desc, skb)) { | |
6744 | /* hand second half of page back to the ring */ | |
6745 | igb_reuse_rx_page(rx_ring, rx_buffer); | |
6746 | } else { | |
6747 | /* we are not reusing the buffer so unmap it */ | |
6748 | dma_unmap_page(rx_ring->dev, rx_buffer->dma, | |
6749 | PAGE_SIZE, DMA_FROM_DEVICE); | |
6750 | } | |
6751 | ||
6752 | /* clear contents of rx_buffer */ | |
6753 | rx_buffer->page = NULL; | |
6754 | ||
6755 | return skb; | |
6756 | } | |
6757 | ||
cd392f5c | 6758 | static inline void igb_rx_checksum(struct igb_ring *ring, |
3ceb90fd AD |
6759 | union e1000_adv_rx_desc *rx_desc, |
6760 | struct sk_buff *skb) | |
9d5c8243 | 6761 | { |
bc8acf2c | 6762 | skb_checksum_none_assert(skb); |
9d5c8243 | 6763 | |
294e7d78 | 6764 | /* Ignore Checksum bit is set */ |
3ceb90fd | 6765 | if (igb_test_staterr(rx_desc, E1000_RXD_STAT_IXSM)) |
294e7d78 AD |
6766 | return; |
6767 | ||
6768 | /* Rx checksum disabled via ethtool */ | |
6769 | if (!(ring->netdev->features & NETIF_F_RXCSUM)) | |
9d5c8243 | 6770 | return; |
85ad76b2 | 6771 | |
9d5c8243 | 6772 | /* TCP/UDP checksum error bit is set */ |
3ceb90fd AD |
6773 | if (igb_test_staterr(rx_desc, |
6774 | E1000_RXDEXT_STATERR_TCPE | | |
6775 | E1000_RXDEXT_STATERR_IPE)) { | |
b980ac18 | 6776 | /* work around errata with sctp packets where the TCPE aka |
b9473560 JB |
6777 | * L4E bit is set incorrectly on 64 byte (60 byte w/o crc) |
6778 | * packets, (aka let the stack check the crc32c) | |
6779 | */ | |
866cff06 AD |
6780 | if (!((skb->len == 60) && |
6781 | test_bit(IGB_RING_FLAG_RX_SCTP_CSUM, &ring->flags))) { | |
12dcd86b | 6782 | u64_stats_update_begin(&ring->rx_syncp); |
04a5fcaa | 6783 | ring->rx_stats.csum_err++; |
12dcd86b ED |
6784 | u64_stats_update_end(&ring->rx_syncp); |
6785 | } | |
9d5c8243 | 6786 | /* let the stack verify checksum errors */ |
9d5c8243 AK |
6787 | return; |
6788 | } | |
6789 | /* It must be a TCP or UDP packet with a valid checksum */ | |
3ceb90fd AD |
6790 | if (igb_test_staterr(rx_desc, E1000_RXD_STAT_TCPCS | |
6791 | E1000_RXD_STAT_UDPCS)) | |
9d5c8243 AK |
6792 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
6793 | ||
3ceb90fd AD |
6794 | dev_dbg(ring->dev, "cksum success: bits %08X\n", |
6795 | le32_to_cpu(rx_desc->wb.upper.status_error)); | |
9d5c8243 AK |
6796 | } |
6797 | ||
077887c3 AD |
6798 | static inline void igb_rx_hash(struct igb_ring *ring, |
6799 | union e1000_adv_rx_desc *rx_desc, | |
6800 | struct sk_buff *skb) | |
6801 | { | |
6802 | if (ring->netdev->features & NETIF_F_RXHASH) | |
42bdf083 TH |
6803 | skb_set_hash(skb, |
6804 | le32_to_cpu(rx_desc->wb.lower.hi_dword.rss), | |
6805 | PKT_HASH_TYPE_L3); | |
077887c3 AD |
6806 | } |
6807 | ||
2e334eee | 6808 | /** |
b980ac18 JK |
6809 | * igb_is_non_eop - process handling of non-EOP buffers |
6810 | * @rx_ring: Rx ring being processed | |
6811 | * @rx_desc: Rx descriptor for current buffer | |
6812 | * @skb: current socket buffer containing buffer in progress | |
2e334eee | 6813 | * |
b980ac18 JK |
6814 | * This function updates next to clean. If the buffer is an EOP buffer |
6815 | * this function exits returning false, otherwise it will place the | |
6816 | * sk_buff in the next buffer to be chained and return true indicating | |
6817 | * that this is in fact a non-EOP buffer. | |
2e334eee AD |
6818 | **/ |
6819 | static bool igb_is_non_eop(struct igb_ring *rx_ring, | |
6820 | union e1000_adv_rx_desc *rx_desc) | |
6821 | { | |
6822 | u32 ntc = rx_ring->next_to_clean + 1; | |
6823 | ||
6824 | /* fetch, update, and store next to clean */ | |
6825 | ntc = (ntc < rx_ring->count) ? ntc : 0; | |
6826 | rx_ring->next_to_clean = ntc; | |
6827 | ||
6828 | prefetch(IGB_RX_DESC(rx_ring, ntc)); | |
6829 | ||
6830 | if (likely(igb_test_staterr(rx_desc, E1000_RXD_STAT_EOP))) | |
6831 | return false; | |
6832 | ||
6833 | return true; | |
6834 | } | |
6835 | ||
1a1c225b | 6836 | /** |
b980ac18 JK |
6837 | * igb_cleanup_headers - Correct corrupted or empty headers |
6838 | * @rx_ring: rx descriptor ring packet is being transacted on | |
6839 | * @rx_desc: pointer to the EOP Rx descriptor | |
6840 | * @skb: pointer to current skb being fixed | |
1a1c225b | 6841 | * |
b980ac18 JK |
6842 | * Address the case where we are pulling data in on pages only |
6843 | * and as such no data is present in the skb header. | |
1a1c225b | 6844 | * |
b980ac18 JK |
6845 | * In addition if skb is not at least 60 bytes we need to pad it so that |
6846 | * it is large enough to qualify as a valid Ethernet frame. | |
1a1c225b | 6847 | * |
b980ac18 | 6848 | * Returns true if an error was encountered and skb was freed. |
1a1c225b AD |
6849 | **/ |
6850 | static bool igb_cleanup_headers(struct igb_ring *rx_ring, | |
6851 | union e1000_adv_rx_desc *rx_desc, | |
6852 | struct sk_buff *skb) | |
6853 | { | |
1a1c225b AD |
6854 | if (unlikely((igb_test_staterr(rx_desc, |
6855 | E1000_RXDEXT_ERR_FRAME_ERR_MASK)))) { | |
6856 | struct net_device *netdev = rx_ring->netdev; | |
6857 | if (!(netdev->features & NETIF_F_RXALL)) { | |
6858 | dev_kfree_skb_any(skb); | |
6859 | return true; | |
6860 | } | |
6861 | } | |
6862 | ||
a94d9e22 AD |
6863 | /* if eth_skb_pad returns an error the skb was freed */ |
6864 | if (eth_skb_pad(skb)) | |
6865 | return true; | |
1a1c225b AD |
6866 | |
6867 | return false; | |
2d94d8ab AD |
6868 | } |
6869 | ||
db2ee5bd | 6870 | /** |
b980ac18 JK |
6871 | * igb_process_skb_fields - Populate skb header fields from Rx descriptor |
6872 | * @rx_ring: rx descriptor ring packet is being transacted on | |
6873 | * @rx_desc: pointer to the EOP Rx descriptor | |
6874 | * @skb: pointer to current skb being populated | |
db2ee5bd | 6875 | * |
b980ac18 JK |
6876 | * This function checks the ring, descriptor, and packet information in |
6877 | * order to populate the hash, checksum, VLAN, timestamp, protocol, and | |
6878 | * other fields within the skb. | |
db2ee5bd AD |
6879 | **/ |
6880 | static void igb_process_skb_fields(struct igb_ring *rx_ring, | |
6881 | union e1000_adv_rx_desc *rx_desc, | |
6882 | struct sk_buff *skb) | |
6883 | { | |
6884 | struct net_device *dev = rx_ring->netdev; | |
6885 | ||
6886 | igb_rx_hash(rx_ring, rx_desc, skb); | |
6887 | ||
6888 | igb_rx_checksum(rx_ring, rx_desc, skb); | |
6889 | ||
5499a968 JK |
6890 | if (igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TS) && |
6891 | !igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TSIP)) | |
6892 | igb_ptp_rx_rgtstamp(rx_ring->q_vector, skb); | |
db2ee5bd | 6893 | |
f646968f | 6894 | if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) && |
db2ee5bd AD |
6895 | igb_test_staterr(rx_desc, E1000_RXD_STAT_VP)) { |
6896 | u16 vid; | |
9005df38 | 6897 | |
db2ee5bd AD |
6898 | if (igb_test_staterr(rx_desc, E1000_RXDEXT_STATERR_LB) && |
6899 | test_bit(IGB_RING_FLAG_RX_LB_VLAN_BSWAP, &rx_ring->flags)) | |
6900 | vid = be16_to_cpu(rx_desc->wb.upper.vlan); | |
6901 | else | |
6902 | vid = le16_to_cpu(rx_desc->wb.upper.vlan); | |
6903 | ||
86a9bad3 | 6904 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); |
db2ee5bd AD |
6905 | } |
6906 | ||
6907 | skb_record_rx_queue(skb, rx_ring->queue_index); | |
6908 | ||
6909 | skb->protocol = eth_type_trans(skb, rx_ring->netdev); | |
6910 | } | |
6911 | ||
32b3e08f | 6912 | static int igb_clean_rx_irq(struct igb_q_vector *q_vector, const int budget) |
9d5c8243 | 6913 | { |
0ba82994 | 6914 | struct igb_ring *rx_ring = q_vector->rx.ring; |
1a1c225b | 6915 | struct sk_buff *skb = rx_ring->skb; |
9d5c8243 | 6916 | unsigned int total_bytes = 0, total_packets = 0; |
16eb8815 | 6917 | u16 cleaned_count = igb_desc_unused(rx_ring); |
9d5c8243 | 6918 | |
57ba34c9 | 6919 | while (likely(total_packets < budget)) { |
2e334eee | 6920 | union e1000_adv_rx_desc *rx_desc; |
bf36c1a0 | 6921 | |
2e334eee AD |
6922 | /* return some buffers to hardware, one at a time is too slow */ |
6923 | if (cleaned_count >= IGB_RX_BUFFER_WRITE) { | |
6924 | igb_alloc_rx_buffers(rx_ring, cleaned_count); | |
6925 | cleaned_count = 0; | |
6926 | } | |
bf36c1a0 | 6927 | |
2e334eee | 6928 | rx_desc = IGB_RX_DESC(rx_ring, rx_ring->next_to_clean); |
16eb8815 | 6929 | |
124b74c1 | 6930 | if (!rx_desc->wb.upper.status_error) |
2e334eee | 6931 | break; |
9d5c8243 | 6932 | |
74e238ea AD |
6933 | /* This memory barrier is needed to keep us from reading |
6934 | * any other fields out of the rx_desc until we know the | |
124b74c1 | 6935 | * descriptor has been written back |
74e238ea | 6936 | */ |
124b74c1 | 6937 | dma_rmb(); |
74e238ea | 6938 | |
2e334eee | 6939 | /* retrieve a buffer from the ring */ |
f9d40f6a | 6940 | skb = igb_fetch_rx_buffer(rx_ring, rx_desc, skb); |
9d5c8243 | 6941 | |
2e334eee AD |
6942 | /* exit if we failed to retrieve a buffer */ |
6943 | if (!skb) | |
6944 | break; | |
1a1c225b | 6945 | |
2e334eee | 6946 | cleaned_count++; |
1a1c225b | 6947 | |
2e334eee AD |
6948 | /* fetch next buffer in frame if non-eop */ |
6949 | if (igb_is_non_eop(rx_ring, rx_desc)) | |
6950 | continue; | |
1a1c225b AD |
6951 | |
6952 | /* verify the packet layout is correct */ | |
6953 | if (igb_cleanup_headers(rx_ring, rx_desc, skb)) { | |
6954 | skb = NULL; | |
6955 | continue; | |
9d5c8243 | 6956 | } |
9d5c8243 | 6957 | |
db2ee5bd | 6958 | /* probably a little skewed due to removing CRC */ |
3ceb90fd | 6959 | total_bytes += skb->len; |
3ceb90fd | 6960 | |
db2ee5bd AD |
6961 | /* populate checksum, timestamp, VLAN, and protocol */ |
6962 | igb_process_skb_fields(rx_ring, rx_desc, skb); | |
3ceb90fd | 6963 | |
b2cb09b1 | 6964 | napi_gro_receive(&q_vector->napi, skb); |
9d5c8243 | 6965 | |
1a1c225b AD |
6966 | /* reset skb pointer */ |
6967 | skb = NULL; | |
6968 | ||
2e334eee AD |
6969 | /* update budget accounting */ |
6970 | total_packets++; | |
57ba34c9 | 6971 | } |
bf36c1a0 | 6972 | |
1a1c225b AD |
6973 | /* place incomplete frames back on ring for completion */ |
6974 | rx_ring->skb = skb; | |
6975 | ||
12dcd86b | 6976 | u64_stats_update_begin(&rx_ring->rx_syncp); |
9d5c8243 AK |
6977 | rx_ring->rx_stats.packets += total_packets; |
6978 | rx_ring->rx_stats.bytes += total_bytes; | |
12dcd86b | 6979 | u64_stats_update_end(&rx_ring->rx_syncp); |
0ba82994 AD |
6980 | q_vector->rx.total_packets += total_packets; |
6981 | q_vector->rx.total_bytes += total_bytes; | |
c023cd88 AD |
6982 | |
6983 | if (cleaned_count) | |
cd392f5c | 6984 | igb_alloc_rx_buffers(rx_ring, cleaned_count); |
c023cd88 | 6985 | |
32b3e08f | 6986 | return total_packets; |
9d5c8243 AK |
6987 | } |
6988 | ||
c023cd88 | 6989 | static bool igb_alloc_mapped_page(struct igb_ring *rx_ring, |
06034649 | 6990 | struct igb_rx_buffer *bi) |
c023cd88 AD |
6991 | { |
6992 | struct page *page = bi->page; | |
cbc8e55f | 6993 | dma_addr_t dma; |
c023cd88 | 6994 | |
cbc8e55f AD |
6995 | /* since we are recycling buffers we should seldom need to alloc */ |
6996 | if (likely(page)) | |
c023cd88 AD |
6997 | return true; |
6998 | ||
cbc8e55f | 6999 | /* alloc new page for storage */ |
42b17f09 | 7000 | page = dev_alloc_page(); |
cbc8e55f AD |
7001 | if (unlikely(!page)) { |
7002 | rx_ring->rx_stats.alloc_failed++; | |
7003 | return false; | |
c023cd88 AD |
7004 | } |
7005 | ||
cbc8e55f AD |
7006 | /* map page for use */ |
7007 | dma = dma_map_page(rx_ring->dev, page, 0, PAGE_SIZE, DMA_FROM_DEVICE); | |
c023cd88 | 7008 | |
b980ac18 | 7009 | /* if mapping failed free memory back to system since |
cbc8e55f AD |
7010 | * there isn't much point in holding memory we can't use |
7011 | */ | |
1a1c225b | 7012 | if (dma_mapping_error(rx_ring->dev, dma)) { |
cbc8e55f AD |
7013 | __free_page(page); |
7014 | ||
c023cd88 AD |
7015 | rx_ring->rx_stats.alloc_failed++; |
7016 | return false; | |
7017 | } | |
7018 | ||
1a1c225b | 7019 | bi->dma = dma; |
cbc8e55f AD |
7020 | bi->page = page; |
7021 | bi->page_offset = 0; | |
1a1c225b | 7022 | |
c023cd88 AD |
7023 | return true; |
7024 | } | |
7025 | ||
9d5c8243 | 7026 | /** |
b980ac18 JK |
7027 | * igb_alloc_rx_buffers - Replace used receive buffers; packet split |
7028 | * @adapter: address of board private structure | |
9d5c8243 | 7029 | **/ |
cd392f5c | 7030 | void igb_alloc_rx_buffers(struct igb_ring *rx_ring, u16 cleaned_count) |
9d5c8243 | 7031 | { |
9d5c8243 | 7032 | union e1000_adv_rx_desc *rx_desc; |
06034649 | 7033 | struct igb_rx_buffer *bi; |
c023cd88 | 7034 | u16 i = rx_ring->next_to_use; |
9d5c8243 | 7035 | |
cbc8e55f AD |
7036 | /* nothing to do */ |
7037 | if (!cleaned_count) | |
7038 | return; | |
7039 | ||
60136906 | 7040 | rx_desc = IGB_RX_DESC(rx_ring, i); |
06034649 | 7041 | bi = &rx_ring->rx_buffer_info[i]; |
c023cd88 | 7042 | i -= rx_ring->count; |
9d5c8243 | 7043 | |
cbc8e55f | 7044 | do { |
1a1c225b | 7045 | if (!igb_alloc_mapped_page(rx_ring, bi)) |
c023cd88 | 7046 | break; |
9d5c8243 | 7047 | |
b980ac18 | 7048 | /* Refresh the desc even if buffer_addrs didn't change |
cbc8e55f AD |
7049 | * because each write-back erases this info. |
7050 | */ | |
f9d40f6a | 7051 | rx_desc->read.pkt_addr = cpu_to_le64(bi->dma + bi->page_offset); |
9d5c8243 | 7052 | |
c023cd88 AD |
7053 | rx_desc++; |
7054 | bi++; | |
9d5c8243 | 7055 | i++; |
c023cd88 | 7056 | if (unlikely(!i)) { |
60136906 | 7057 | rx_desc = IGB_RX_DESC(rx_ring, 0); |
06034649 | 7058 | bi = rx_ring->rx_buffer_info; |
c023cd88 AD |
7059 | i -= rx_ring->count; |
7060 | } | |
7061 | ||
95dd44b4 AD |
7062 | /* clear the status bits for the next_to_use descriptor */ |
7063 | rx_desc->wb.upper.status_error = 0; | |
cbc8e55f AD |
7064 | |
7065 | cleaned_count--; | |
7066 | } while (cleaned_count); | |
9d5c8243 | 7067 | |
c023cd88 AD |
7068 | i += rx_ring->count; |
7069 | ||
9d5c8243 | 7070 | if (rx_ring->next_to_use != i) { |
cbc8e55f | 7071 | /* record the next descriptor to use */ |
9d5c8243 | 7072 | rx_ring->next_to_use = i; |
9d5c8243 | 7073 | |
cbc8e55f AD |
7074 | /* update next to alloc since we have filled the ring */ |
7075 | rx_ring->next_to_alloc = i; | |
7076 | ||
b980ac18 | 7077 | /* Force memory writes to complete before letting h/w |
9d5c8243 AK |
7078 | * know there are new descriptors to fetch. (Only |
7079 | * applicable for weak-ordered memory model archs, | |
cbc8e55f AD |
7080 | * such as IA-64). |
7081 | */ | |
9d5c8243 | 7082 | wmb(); |
fce99e34 | 7083 | writel(i, rx_ring->tail); |
9d5c8243 AK |
7084 | } |
7085 | } | |
7086 | ||
7087 | /** | |
7088 | * igb_mii_ioctl - | |
7089 | * @netdev: | |
7090 | * @ifreq: | |
7091 | * @cmd: | |
7092 | **/ | |
7093 | static int igb_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
7094 | { | |
7095 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7096 | struct mii_ioctl_data *data = if_mii(ifr); | |
7097 | ||
7098 | if (adapter->hw.phy.media_type != e1000_media_type_copper) | |
7099 | return -EOPNOTSUPP; | |
7100 | ||
7101 | switch (cmd) { | |
7102 | case SIOCGMIIPHY: | |
7103 | data->phy_id = adapter->hw.phy.addr; | |
7104 | break; | |
7105 | case SIOCGMIIREG: | |
f5f4cf08 | 7106 | if (igb_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
9005df38 | 7107 | &data->val_out)) |
9d5c8243 AK |
7108 | return -EIO; |
7109 | break; | |
7110 | case SIOCSMIIREG: | |
7111 | default: | |
7112 | return -EOPNOTSUPP; | |
7113 | } | |
7114 | return 0; | |
7115 | } | |
7116 | ||
7117 | /** | |
7118 | * igb_ioctl - | |
7119 | * @netdev: | |
7120 | * @ifreq: | |
7121 | * @cmd: | |
7122 | **/ | |
7123 | static int igb_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
7124 | { | |
7125 | switch (cmd) { | |
7126 | case SIOCGMIIPHY: | |
7127 | case SIOCGMIIREG: | |
7128 | case SIOCSMIIREG: | |
7129 | return igb_mii_ioctl(netdev, ifr, cmd); | |
6ab5f7b2 JK |
7130 | case SIOCGHWTSTAMP: |
7131 | return igb_ptp_get_ts_config(netdev, ifr); | |
c6cb090b | 7132 | case SIOCSHWTSTAMP: |
6ab5f7b2 | 7133 | return igb_ptp_set_ts_config(netdev, ifr); |
9d5c8243 AK |
7134 | default: |
7135 | return -EOPNOTSUPP; | |
7136 | } | |
7137 | } | |
7138 | ||
94826487 TF |
7139 | void igb_read_pci_cfg(struct e1000_hw *hw, u32 reg, u16 *value) |
7140 | { | |
7141 | struct igb_adapter *adapter = hw->back; | |
7142 | ||
7143 | pci_read_config_word(adapter->pdev, reg, value); | |
7144 | } | |
7145 | ||
7146 | void igb_write_pci_cfg(struct e1000_hw *hw, u32 reg, u16 *value) | |
7147 | { | |
7148 | struct igb_adapter *adapter = hw->back; | |
7149 | ||
7150 | pci_write_config_word(adapter->pdev, reg, *value); | |
7151 | } | |
7152 | ||
009bc06e AD |
7153 | s32 igb_read_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value) |
7154 | { | |
7155 | struct igb_adapter *adapter = hw->back; | |
009bc06e | 7156 | |
23d028cc | 7157 | if (pcie_capability_read_word(adapter->pdev, reg, value)) |
009bc06e AD |
7158 | return -E1000_ERR_CONFIG; |
7159 | ||
009bc06e AD |
7160 | return 0; |
7161 | } | |
7162 | ||
7163 | s32 igb_write_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value) | |
7164 | { | |
7165 | struct igb_adapter *adapter = hw->back; | |
009bc06e | 7166 | |
23d028cc | 7167 | if (pcie_capability_write_word(adapter->pdev, reg, *value)) |
009bc06e AD |
7168 | return -E1000_ERR_CONFIG; |
7169 | ||
009bc06e AD |
7170 | return 0; |
7171 | } | |
7172 | ||
c8f44aff | 7173 | static void igb_vlan_mode(struct net_device *netdev, netdev_features_t features) |
9d5c8243 AK |
7174 | { |
7175 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7176 | struct e1000_hw *hw = &adapter->hw; | |
7177 | u32 ctrl, rctl; | |
f646968f | 7178 | bool enable = !!(features & NETIF_F_HW_VLAN_CTAG_RX); |
9d5c8243 | 7179 | |
5faf030c | 7180 | if (enable) { |
9d5c8243 AK |
7181 | /* enable VLAN tag insert/strip */ |
7182 | ctrl = rd32(E1000_CTRL); | |
7183 | ctrl |= E1000_CTRL_VME; | |
7184 | wr32(E1000_CTRL, ctrl); | |
7185 | ||
51466239 | 7186 | /* Disable CFI check */ |
9d5c8243 | 7187 | rctl = rd32(E1000_RCTL); |
9d5c8243 AK |
7188 | rctl &= ~E1000_RCTL_CFIEN; |
7189 | wr32(E1000_RCTL, rctl); | |
9d5c8243 AK |
7190 | } else { |
7191 | /* disable VLAN tag insert/strip */ | |
7192 | ctrl = rd32(E1000_CTRL); | |
7193 | ctrl &= ~E1000_CTRL_VME; | |
7194 | wr32(E1000_CTRL, ctrl); | |
9d5c8243 AK |
7195 | } |
7196 | ||
e1739522 | 7197 | igb_rlpml_set(adapter); |
9d5c8243 AK |
7198 | } |
7199 | ||
80d5c368 PM |
7200 | static int igb_vlan_rx_add_vid(struct net_device *netdev, |
7201 | __be16 proto, u16 vid) | |
9d5c8243 AK |
7202 | { |
7203 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7204 | struct e1000_hw *hw = &adapter->hw; | |
4ae196df | 7205 | int pf_id = adapter->vfs_allocated_count; |
9d5c8243 | 7206 | |
51466239 AD |
7207 | /* attempt to add filter to vlvf array */ |
7208 | igb_vlvf_set(adapter, vid, true, pf_id); | |
4ae196df | 7209 | |
51466239 AD |
7210 | /* add the filter since PF can receive vlans w/o entry in vlvf */ |
7211 | igb_vfta_set(hw, vid, true); | |
b2cb09b1 JP |
7212 | |
7213 | set_bit(vid, adapter->active_vlans); | |
8e586137 JP |
7214 | |
7215 | return 0; | |
9d5c8243 AK |
7216 | } |
7217 | ||
80d5c368 PM |
7218 | static int igb_vlan_rx_kill_vid(struct net_device *netdev, |
7219 | __be16 proto, u16 vid) | |
9d5c8243 AK |
7220 | { |
7221 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7222 | struct e1000_hw *hw = &adapter->hw; | |
4ae196df | 7223 | int pf_id = adapter->vfs_allocated_count; |
51466239 | 7224 | s32 err; |
9d5c8243 | 7225 | |
51466239 AD |
7226 | /* remove vlan from VLVF table array */ |
7227 | err = igb_vlvf_set(adapter, vid, false, pf_id); | |
9d5c8243 | 7228 | |
51466239 AD |
7229 | /* if vid was not present in VLVF just remove it from table */ |
7230 | if (err) | |
4ae196df | 7231 | igb_vfta_set(hw, vid, false); |
b2cb09b1 JP |
7232 | |
7233 | clear_bit(vid, adapter->active_vlans); | |
8e586137 JP |
7234 | |
7235 | return 0; | |
9d5c8243 AK |
7236 | } |
7237 | ||
7238 | static void igb_restore_vlan(struct igb_adapter *adapter) | |
7239 | { | |
b2cb09b1 | 7240 | u16 vid; |
9d5c8243 | 7241 | |
5faf030c AD |
7242 | igb_vlan_mode(adapter->netdev, adapter->netdev->features); |
7243 | ||
b2cb09b1 | 7244 | for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) |
80d5c368 | 7245 | igb_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid); |
9d5c8243 AK |
7246 | } |
7247 | ||
14ad2513 | 7248 | int igb_set_spd_dplx(struct igb_adapter *adapter, u32 spd, u8 dplx) |
9d5c8243 | 7249 | { |
090b1795 | 7250 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
7251 | struct e1000_mac_info *mac = &adapter->hw.mac; |
7252 | ||
7253 | mac->autoneg = 0; | |
7254 | ||
14ad2513 | 7255 | /* Make sure dplx is at most 1 bit and lsb of speed is not set |
b980ac18 JK |
7256 | * for the switch() below to work |
7257 | */ | |
14ad2513 DD |
7258 | if ((spd & 1) || (dplx & ~1)) |
7259 | goto err_inval; | |
7260 | ||
f502ef7d AA |
7261 | /* Fiber NIC's only allow 1000 gbps Full duplex |
7262 | * and 100Mbps Full duplex for 100baseFx sfp | |
7263 | */ | |
7264 | if (adapter->hw.phy.media_type == e1000_media_type_internal_serdes) { | |
7265 | switch (spd + dplx) { | |
7266 | case SPEED_10 + DUPLEX_HALF: | |
7267 | case SPEED_10 + DUPLEX_FULL: | |
7268 | case SPEED_100 + DUPLEX_HALF: | |
7269 | goto err_inval; | |
7270 | default: | |
7271 | break; | |
7272 | } | |
7273 | } | |
cd2638a8 | 7274 | |
14ad2513 | 7275 | switch (spd + dplx) { |
9d5c8243 AK |
7276 | case SPEED_10 + DUPLEX_HALF: |
7277 | mac->forced_speed_duplex = ADVERTISE_10_HALF; | |
7278 | break; | |
7279 | case SPEED_10 + DUPLEX_FULL: | |
7280 | mac->forced_speed_duplex = ADVERTISE_10_FULL; | |
7281 | break; | |
7282 | case SPEED_100 + DUPLEX_HALF: | |
7283 | mac->forced_speed_duplex = ADVERTISE_100_HALF; | |
7284 | break; | |
7285 | case SPEED_100 + DUPLEX_FULL: | |
7286 | mac->forced_speed_duplex = ADVERTISE_100_FULL; | |
7287 | break; | |
7288 | case SPEED_1000 + DUPLEX_FULL: | |
7289 | mac->autoneg = 1; | |
7290 | adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL; | |
7291 | break; | |
7292 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ | |
7293 | default: | |
14ad2513 | 7294 | goto err_inval; |
9d5c8243 | 7295 | } |
8376dad0 JB |
7296 | |
7297 | /* clear MDI, MDI(-X) override is only allowed when autoneg enabled */ | |
7298 | adapter->hw.phy.mdix = AUTO_ALL_MODES; | |
7299 | ||
9d5c8243 | 7300 | return 0; |
14ad2513 DD |
7301 | |
7302 | err_inval: | |
7303 | dev_err(&pdev->dev, "Unsupported Speed/Duplex configuration\n"); | |
7304 | return -EINVAL; | |
9d5c8243 AK |
7305 | } |
7306 | ||
749ab2cd YZ |
7307 | static int __igb_shutdown(struct pci_dev *pdev, bool *enable_wake, |
7308 | bool runtime) | |
9d5c8243 AK |
7309 | { |
7310 | struct net_device *netdev = pci_get_drvdata(pdev); | |
7311 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7312 | struct e1000_hw *hw = &adapter->hw; | |
2d064c06 | 7313 | u32 ctrl, rctl, status; |
749ab2cd | 7314 | u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol; |
9d5c8243 AK |
7315 | #ifdef CONFIG_PM |
7316 | int retval = 0; | |
7317 | #endif | |
7318 | ||
7319 | netif_device_detach(netdev); | |
7320 | ||
a88f10ec | 7321 | if (netif_running(netdev)) |
749ab2cd | 7322 | __igb_close(netdev, true); |
a88f10ec | 7323 | |
047e0030 | 7324 | igb_clear_interrupt_scheme(adapter); |
9d5c8243 AK |
7325 | |
7326 | #ifdef CONFIG_PM | |
7327 | retval = pci_save_state(pdev); | |
7328 | if (retval) | |
7329 | return retval; | |
7330 | #endif | |
7331 | ||
7332 | status = rd32(E1000_STATUS); | |
7333 | if (status & E1000_STATUS_LU) | |
7334 | wufc &= ~E1000_WUFC_LNKC; | |
7335 | ||
7336 | if (wufc) { | |
7337 | igb_setup_rctl(adapter); | |
ff41f8dc | 7338 | igb_set_rx_mode(netdev); |
9d5c8243 AK |
7339 | |
7340 | /* turn on all-multi mode if wake on multicast is enabled */ | |
7341 | if (wufc & E1000_WUFC_MC) { | |
7342 | rctl = rd32(E1000_RCTL); | |
7343 | rctl |= E1000_RCTL_MPE; | |
7344 | wr32(E1000_RCTL, rctl); | |
7345 | } | |
7346 | ||
7347 | ctrl = rd32(E1000_CTRL); | |
7348 | /* advertise wake from D3Cold */ | |
7349 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
7350 | /* phy power management enable */ | |
7351 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
7352 | ctrl |= E1000_CTRL_ADVD3WUC; | |
7353 | wr32(E1000_CTRL, ctrl); | |
7354 | ||
9d5c8243 | 7355 | /* Allow time for pending master requests to run */ |
330a6d6a | 7356 | igb_disable_pcie_master(hw); |
9d5c8243 AK |
7357 | |
7358 | wr32(E1000_WUC, E1000_WUC_PME_EN); | |
7359 | wr32(E1000_WUFC, wufc); | |
9d5c8243 AK |
7360 | } else { |
7361 | wr32(E1000_WUC, 0); | |
7362 | wr32(E1000_WUFC, 0); | |
9d5c8243 AK |
7363 | } |
7364 | ||
3fe7c4c9 RW |
7365 | *enable_wake = wufc || adapter->en_mng_pt; |
7366 | if (!*enable_wake) | |
88a268c1 NN |
7367 | igb_power_down_link(adapter); |
7368 | else | |
7369 | igb_power_up_link(adapter); | |
9d5c8243 AK |
7370 | |
7371 | /* Release control of h/w to f/w. If f/w is AMT enabled, this | |
b980ac18 JK |
7372 | * would have already happened in close and is redundant. |
7373 | */ | |
9d5c8243 AK |
7374 | igb_release_hw_control(adapter); |
7375 | ||
7376 | pci_disable_device(pdev); | |
7377 | ||
9d5c8243 AK |
7378 | return 0; |
7379 | } | |
7380 | ||
7381 | #ifdef CONFIG_PM | |
d9dd966d | 7382 | #ifdef CONFIG_PM_SLEEP |
749ab2cd | 7383 | static int igb_suspend(struct device *dev) |
3fe7c4c9 RW |
7384 | { |
7385 | int retval; | |
7386 | bool wake; | |
749ab2cd | 7387 | struct pci_dev *pdev = to_pci_dev(dev); |
3fe7c4c9 | 7388 | |
749ab2cd | 7389 | retval = __igb_shutdown(pdev, &wake, 0); |
3fe7c4c9 RW |
7390 | if (retval) |
7391 | return retval; | |
7392 | ||
7393 | if (wake) { | |
7394 | pci_prepare_to_sleep(pdev); | |
7395 | } else { | |
7396 | pci_wake_from_d3(pdev, false); | |
7397 | pci_set_power_state(pdev, PCI_D3hot); | |
7398 | } | |
7399 | ||
7400 | return 0; | |
7401 | } | |
d9dd966d | 7402 | #endif /* CONFIG_PM_SLEEP */ |
3fe7c4c9 | 7403 | |
749ab2cd | 7404 | static int igb_resume(struct device *dev) |
9d5c8243 | 7405 | { |
749ab2cd | 7406 | struct pci_dev *pdev = to_pci_dev(dev); |
9d5c8243 AK |
7407 | struct net_device *netdev = pci_get_drvdata(pdev); |
7408 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7409 | struct e1000_hw *hw = &adapter->hw; | |
7410 | u32 err; | |
7411 | ||
7412 | pci_set_power_state(pdev, PCI_D0); | |
7413 | pci_restore_state(pdev); | |
b94f2d77 | 7414 | pci_save_state(pdev); |
42bfd33a | 7415 | |
17a402a0 CW |
7416 | if (!pci_device_is_present(pdev)) |
7417 | return -ENODEV; | |
aed5dec3 | 7418 | err = pci_enable_device_mem(pdev); |
9d5c8243 AK |
7419 | if (err) { |
7420 | dev_err(&pdev->dev, | |
7421 | "igb: Cannot enable PCI device from suspend\n"); | |
7422 | return err; | |
7423 | } | |
7424 | pci_set_master(pdev); | |
7425 | ||
7426 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
7427 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
7428 | ||
53c7d064 | 7429 | if (igb_init_interrupt_scheme(adapter, true)) { |
a88f10ec | 7430 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); |
3eb14ea8 | 7431 | rtnl_unlock(); |
a88f10ec | 7432 | return -ENOMEM; |
9d5c8243 AK |
7433 | } |
7434 | ||
9d5c8243 | 7435 | igb_reset(adapter); |
a8564f03 AD |
7436 | |
7437 | /* let the f/w know that the h/w is now under the control of the | |
b980ac18 JK |
7438 | * driver. |
7439 | */ | |
a8564f03 AD |
7440 | igb_get_hw_control(adapter); |
7441 | ||
9d5c8243 AK |
7442 | wr32(E1000_WUS, ~0); |
7443 | ||
749ab2cd | 7444 | if (netdev->flags & IFF_UP) { |
0c2cc02e | 7445 | rtnl_lock(); |
749ab2cd | 7446 | err = __igb_open(netdev, true); |
0c2cc02e | 7447 | rtnl_unlock(); |
a88f10ec AD |
7448 | if (err) |
7449 | return err; | |
7450 | } | |
9d5c8243 AK |
7451 | |
7452 | netif_device_attach(netdev); | |
749ab2cd YZ |
7453 | return 0; |
7454 | } | |
7455 | ||
749ab2cd YZ |
7456 | static int igb_runtime_idle(struct device *dev) |
7457 | { | |
7458 | struct pci_dev *pdev = to_pci_dev(dev); | |
7459 | struct net_device *netdev = pci_get_drvdata(pdev); | |
7460 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7461 | ||
7462 | if (!igb_has_link(adapter)) | |
7463 | pm_schedule_suspend(dev, MSEC_PER_SEC * 5); | |
7464 | ||
7465 | return -EBUSY; | |
7466 | } | |
7467 | ||
7468 | static int igb_runtime_suspend(struct device *dev) | |
7469 | { | |
7470 | struct pci_dev *pdev = to_pci_dev(dev); | |
7471 | int retval; | |
7472 | bool wake; | |
7473 | ||
7474 | retval = __igb_shutdown(pdev, &wake, 1); | |
7475 | if (retval) | |
7476 | return retval; | |
7477 | ||
7478 | if (wake) { | |
7479 | pci_prepare_to_sleep(pdev); | |
7480 | } else { | |
7481 | pci_wake_from_d3(pdev, false); | |
7482 | pci_set_power_state(pdev, PCI_D3hot); | |
7483 | } | |
9d5c8243 | 7484 | |
9d5c8243 AK |
7485 | return 0; |
7486 | } | |
749ab2cd YZ |
7487 | |
7488 | static int igb_runtime_resume(struct device *dev) | |
7489 | { | |
7490 | return igb_resume(dev); | |
7491 | } | |
d61c81cb | 7492 | #endif /* CONFIG_PM */ |
9d5c8243 AK |
7493 | |
7494 | static void igb_shutdown(struct pci_dev *pdev) | |
7495 | { | |
3fe7c4c9 RW |
7496 | bool wake; |
7497 | ||
749ab2cd | 7498 | __igb_shutdown(pdev, &wake, 0); |
3fe7c4c9 RW |
7499 | |
7500 | if (system_state == SYSTEM_POWER_OFF) { | |
7501 | pci_wake_from_d3(pdev, wake); | |
7502 | pci_set_power_state(pdev, PCI_D3hot); | |
7503 | } | |
9d5c8243 AK |
7504 | } |
7505 | ||
fa44f2f1 GR |
7506 | #ifdef CONFIG_PCI_IOV |
7507 | static int igb_sriov_reinit(struct pci_dev *dev) | |
7508 | { | |
7509 | struct net_device *netdev = pci_get_drvdata(dev); | |
7510 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7511 | struct pci_dev *pdev = adapter->pdev; | |
7512 | ||
7513 | rtnl_lock(); | |
7514 | ||
7515 | if (netif_running(netdev)) | |
7516 | igb_close(netdev); | |
76252723 SA |
7517 | else |
7518 | igb_reset(adapter); | |
fa44f2f1 GR |
7519 | |
7520 | igb_clear_interrupt_scheme(adapter); | |
7521 | ||
7522 | igb_init_queue_configuration(adapter); | |
7523 | ||
7524 | if (igb_init_interrupt_scheme(adapter, true)) { | |
f468adc9 | 7525 | rtnl_unlock(); |
fa44f2f1 GR |
7526 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); |
7527 | return -ENOMEM; | |
7528 | } | |
7529 | ||
7530 | if (netif_running(netdev)) | |
7531 | igb_open(netdev); | |
7532 | ||
7533 | rtnl_unlock(); | |
7534 | ||
7535 | return 0; | |
7536 | } | |
7537 | ||
7538 | static int igb_pci_disable_sriov(struct pci_dev *dev) | |
7539 | { | |
7540 | int err = igb_disable_sriov(dev); | |
7541 | ||
7542 | if (!err) | |
7543 | err = igb_sriov_reinit(dev); | |
7544 | ||
7545 | return err; | |
7546 | } | |
7547 | ||
7548 | static int igb_pci_enable_sriov(struct pci_dev *dev, int num_vfs) | |
7549 | { | |
7550 | int err = igb_enable_sriov(dev, num_vfs); | |
7551 | ||
7552 | if (err) | |
7553 | goto out; | |
7554 | ||
7555 | err = igb_sriov_reinit(dev); | |
7556 | if (!err) | |
7557 | return num_vfs; | |
7558 | ||
7559 | out: | |
7560 | return err; | |
7561 | } | |
7562 | ||
7563 | #endif | |
7564 | static int igb_pci_sriov_configure(struct pci_dev *dev, int num_vfs) | |
7565 | { | |
7566 | #ifdef CONFIG_PCI_IOV | |
7567 | if (num_vfs == 0) | |
7568 | return igb_pci_disable_sriov(dev); | |
7569 | else | |
7570 | return igb_pci_enable_sriov(dev, num_vfs); | |
7571 | #endif | |
7572 | return 0; | |
7573 | } | |
7574 | ||
9d5c8243 | 7575 | #ifdef CONFIG_NET_POLL_CONTROLLER |
b980ac18 | 7576 | /* Polling 'interrupt' - used by things like netconsole to send skbs |
9d5c8243 AK |
7577 | * without having to re-enable interrupts. It's not called while |
7578 | * the interrupt routine is executing. | |
7579 | */ | |
7580 | static void igb_netpoll(struct net_device *netdev) | |
7581 | { | |
7582 | struct igb_adapter *adapter = netdev_priv(netdev); | |
eebbbdba | 7583 | struct e1000_hw *hw = &adapter->hw; |
0d1ae7f4 | 7584 | struct igb_q_vector *q_vector; |
9d5c8243 | 7585 | int i; |
9d5c8243 | 7586 | |
047e0030 | 7587 | for (i = 0; i < adapter->num_q_vectors; i++) { |
0d1ae7f4 | 7588 | q_vector = adapter->q_vector[i]; |
cd14ef54 | 7589 | if (adapter->flags & IGB_FLAG_HAS_MSIX) |
0d1ae7f4 AD |
7590 | wr32(E1000_EIMC, q_vector->eims_value); |
7591 | else | |
7592 | igb_irq_disable(adapter); | |
047e0030 | 7593 | napi_schedule(&q_vector->napi); |
eebbbdba | 7594 | } |
9d5c8243 AK |
7595 | } |
7596 | #endif /* CONFIG_NET_POLL_CONTROLLER */ | |
7597 | ||
7598 | /** | |
b980ac18 JK |
7599 | * igb_io_error_detected - called when PCI error is detected |
7600 | * @pdev: Pointer to PCI device | |
7601 | * @state: The current pci connection state | |
9d5c8243 | 7602 | * |
b980ac18 JK |
7603 | * This function is called after a PCI bus error affecting |
7604 | * this device has been detected. | |
7605 | **/ | |
9d5c8243 AK |
7606 | static pci_ers_result_t igb_io_error_detected(struct pci_dev *pdev, |
7607 | pci_channel_state_t state) | |
7608 | { | |
7609 | struct net_device *netdev = pci_get_drvdata(pdev); | |
7610 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7611 | ||
7612 | netif_device_detach(netdev); | |
7613 | ||
59ed6eec AD |
7614 | if (state == pci_channel_io_perm_failure) |
7615 | return PCI_ERS_RESULT_DISCONNECT; | |
7616 | ||
9d5c8243 AK |
7617 | if (netif_running(netdev)) |
7618 | igb_down(adapter); | |
7619 | pci_disable_device(pdev); | |
7620 | ||
7621 | /* Request a slot slot reset. */ | |
7622 | return PCI_ERS_RESULT_NEED_RESET; | |
7623 | } | |
7624 | ||
7625 | /** | |
b980ac18 JK |
7626 | * igb_io_slot_reset - called after the pci bus has been reset. |
7627 | * @pdev: Pointer to PCI device | |
9d5c8243 | 7628 | * |
b980ac18 JK |
7629 | * Restart the card from scratch, as if from a cold-boot. Implementation |
7630 | * resembles the first-half of the igb_resume routine. | |
7631 | **/ | |
9d5c8243 AK |
7632 | static pci_ers_result_t igb_io_slot_reset(struct pci_dev *pdev) |
7633 | { | |
7634 | struct net_device *netdev = pci_get_drvdata(pdev); | |
7635 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7636 | struct e1000_hw *hw = &adapter->hw; | |
40a914fa | 7637 | pci_ers_result_t result; |
42bfd33a | 7638 | int err; |
9d5c8243 | 7639 | |
aed5dec3 | 7640 | if (pci_enable_device_mem(pdev)) { |
9d5c8243 AK |
7641 | dev_err(&pdev->dev, |
7642 | "Cannot re-enable PCI device after reset.\n"); | |
40a914fa AD |
7643 | result = PCI_ERS_RESULT_DISCONNECT; |
7644 | } else { | |
7645 | pci_set_master(pdev); | |
7646 | pci_restore_state(pdev); | |
b94f2d77 | 7647 | pci_save_state(pdev); |
9d5c8243 | 7648 | |
40a914fa AD |
7649 | pci_enable_wake(pdev, PCI_D3hot, 0); |
7650 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
9d5c8243 | 7651 | |
40a914fa AD |
7652 | igb_reset(adapter); |
7653 | wr32(E1000_WUS, ~0); | |
7654 | result = PCI_ERS_RESULT_RECOVERED; | |
7655 | } | |
9d5c8243 | 7656 | |
ea943d41 JK |
7657 | err = pci_cleanup_aer_uncorrect_error_status(pdev); |
7658 | if (err) { | |
b980ac18 JK |
7659 | dev_err(&pdev->dev, |
7660 | "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n", | |
7661 | err); | |
ea943d41 JK |
7662 | /* non-fatal, continue */ |
7663 | } | |
40a914fa AD |
7664 | |
7665 | return result; | |
9d5c8243 AK |
7666 | } |
7667 | ||
7668 | /** | |
b980ac18 JK |
7669 | * igb_io_resume - called when traffic can start flowing again. |
7670 | * @pdev: Pointer to PCI device | |
9d5c8243 | 7671 | * |
b980ac18 JK |
7672 | * This callback is called when the error recovery driver tells us that |
7673 | * its OK to resume normal operation. Implementation resembles the | |
7674 | * second-half of the igb_resume routine. | |
9d5c8243 AK |
7675 | */ |
7676 | static void igb_io_resume(struct pci_dev *pdev) | |
7677 | { | |
7678 | struct net_device *netdev = pci_get_drvdata(pdev); | |
7679 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7680 | ||
9d5c8243 AK |
7681 | if (netif_running(netdev)) { |
7682 | if (igb_up(adapter)) { | |
7683 | dev_err(&pdev->dev, "igb_up failed after reset\n"); | |
7684 | return; | |
7685 | } | |
7686 | } | |
7687 | ||
7688 | netif_device_attach(netdev); | |
7689 | ||
7690 | /* let the f/w know that the h/w is now under the control of the | |
b980ac18 JK |
7691 | * driver. |
7692 | */ | |
9d5c8243 | 7693 | igb_get_hw_control(adapter); |
9d5c8243 AK |
7694 | } |
7695 | ||
26ad9178 | 7696 | static void igb_rar_set_qsel(struct igb_adapter *adapter, u8 *addr, u32 index, |
b980ac18 | 7697 | u8 qsel) |
26ad9178 AD |
7698 | { |
7699 | u32 rar_low, rar_high; | |
7700 | struct e1000_hw *hw = &adapter->hw; | |
7701 | ||
7702 | /* HW expects these in little endian so we reverse the byte order | |
7703 | * from network order (big endian) to little endian | |
7704 | */ | |
7705 | rar_low = ((u32) addr[0] | ((u32) addr[1] << 8) | | |
b980ac18 | 7706 | ((u32) addr[2] << 16) | ((u32) addr[3] << 24)); |
26ad9178 AD |
7707 | rar_high = ((u32) addr[4] | ((u32) addr[5] << 8)); |
7708 | ||
7709 | /* Indicate to hardware the Address is Valid. */ | |
7710 | rar_high |= E1000_RAH_AV; | |
7711 | ||
7712 | if (hw->mac.type == e1000_82575) | |
7713 | rar_high |= E1000_RAH_POOL_1 * qsel; | |
7714 | else | |
7715 | rar_high |= E1000_RAH_POOL_1 << qsel; | |
7716 | ||
7717 | wr32(E1000_RAL(index), rar_low); | |
7718 | wrfl(); | |
7719 | wr32(E1000_RAH(index), rar_high); | |
7720 | wrfl(); | |
7721 | } | |
7722 | ||
4ae196df | 7723 | static int igb_set_vf_mac(struct igb_adapter *adapter, |
b980ac18 | 7724 | int vf, unsigned char *mac_addr) |
4ae196df AD |
7725 | { |
7726 | struct e1000_hw *hw = &adapter->hw; | |
ff41f8dc | 7727 | /* VF MAC addresses start at end of receive addresses and moves |
b980ac18 JK |
7728 | * towards the first, as a result a collision should not be possible |
7729 | */ | |
ff41f8dc | 7730 | int rar_entry = hw->mac.rar_entry_count - (vf + 1); |
4ae196df | 7731 | |
37680117 | 7732 | memcpy(adapter->vf_data[vf].vf_mac_addresses, mac_addr, ETH_ALEN); |
4ae196df | 7733 | |
26ad9178 | 7734 | igb_rar_set_qsel(adapter, mac_addr, rar_entry, vf); |
4ae196df AD |
7735 | |
7736 | return 0; | |
7737 | } | |
7738 | ||
8151d294 WM |
7739 | static int igb_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) |
7740 | { | |
7741 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7742 | if (!is_valid_ether_addr(mac) || (vf >= adapter->vfs_allocated_count)) | |
7743 | return -EINVAL; | |
7744 | adapter->vf_data[vf].flags |= IGB_VF_FLAG_PF_SET_MAC; | |
7745 | dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf); | |
b980ac18 JK |
7746 | dev_info(&adapter->pdev->dev, |
7747 | "Reload the VF driver to make this change effective."); | |
8151d294 | 7748 | if (test_bit(__IGB_DOWN, &adapter->state)) { |
b980ac18 JK |
7749 | dev_warn(&adapter->pdev->dev, |
7750 | "The VF MAC address has been set, but the PF device is not up.\n"); | |
7751 | dev_warn(&adapter->pdev->dev, | |
7752 | "Bring the PF device up before attempting to use the VF device.\n"); | |
8151d294 WM |
7753 | } |
7754 | return igb_set_vf_mac(adapter, vf, mac); | |
7755 | } | |
7756 | ||
17dc566c LL |
7757 | static int igb_link_mbps(int internal_link_speed) |
7758 | { | |
7759 | switch (internal_link_speed) { | |
7760 | case SPEED_100: | |
7761 | return 100; | |
7762 | case SPEED_1000: | |
7763 | return 1000; | |
7764 | default: | |
7765 | return 0; | |
7766 | } | |
7767 | } | |
7768 | ||
7769 | static void igb_set_vf_rate_limit(struct e1000_hw *hw, int vf, int tx_rate, | |
7770 | int link_speed) | |
7771 | { | |
7772 | int rf_dec, rf_int; | |
7773 | u32 bcnrc_val; | |
7774 | ||
7775 | if (tx_rate != 0) { | |
7776 | /* Calculate the rate factor values to set */ | |
7777 | rf_int = link_speed / tx_rate; | |
7778 | rf_dec = (link_speed - (rf_int * tx_rate)); | |
b980ac18 JK |
7779 | rf_dec = (rf_dec * (1 << E1000_RTTBCNRC_RF_INT_SHIFT)) / |
7780 | tx_rate; | |
17dc566c LL |
7781 | |
7782 | bcnrc_val = E1000_RTTBCNRC_RS_ENA; | |
b980ac18 JK |
7783 | bcnrc_val |= ((rf_int << E1000_RTTBCNRC_RF_INT_SHIFT) & |
7784 | E1000_RTTBCNRC_RF_INT_MASK); | |
17dc566c LL |
7785 | bcnrc_val |= (rf_dec & E1000_RTTBCNRC_RF_DEC_MASK); |
7786 | } else { | |
7787 | bcnrc_val = 0; | |
7788 | } | |
7789 | ||
7790 | wr32(E1000_RTTDQSEL, vf); /* vf X uses queue X */ | |
b980ac18 | 7791 | /* Set global transmit compensation time to the MMW_SIZE in RTTBCNRM |
f00b0da7 LL |
7792 | * register. MMW_SIZE=0x014 if 9728-byte jumbo is supported. |
7793 | */ | |
7794 | wr32(E1000_RTTBCNRM, 0x14); | |
17dc566c LL |
7795 | wr32(E1000_RTTBCNRC, bcnrc_val); |
7796 | } | |
7797 | ||
7798 | static void igb_check_vf_rate_limit(struct igb_adapter *adapter) | |
7799 | { | |
7800 | int actual_link_speed, i; | |
7801 | bool reset_rate = false; | |
7802 | ||
7803 | /* VF TX rate limit was not set or not supported */ | |
7804 | if ((adapter->vf_rate_link_speed == 0) || | |
7805 | (adapter->hw.mac.type != e1000_82576)) | |
7806 | return; | |
7807 | ||
7808 | actual_link_speed = igb_link_mbps(adapter->link_speed); | |
7809 | if (actual_link_speed != adapter->vf_rate_link_speed) { | |
7810 | reset_rate = true; | |
7811 | adapter->vf_rate_link_speed = 0; | |
7812 | dev_info(&adapter->pdev->dev, | |
b980ac18 | 7813 | "Link speed has been changed. VF Transmit rate is disabled\n"); |
17dc566c LL |
7814 | } |
7815 | ||
7816 | for (i = 0; i < adapter->vfs_allocated_count; i++) { | |
7817 | if (reset_rate) | |
7818 | adapter->vf_data[i].tx_rate = 0; | |
7819 | ||
7820 | igb_set_vf_rate_limit(&adapter->hw, i, | |
b980ac18 JK |
7821 | adapter->vf_data[i].tx_rate, |
7822 | actual_link_speed); | |
17dc566c LL |
7823 | } |
7824 | } | |
7825 | ||
ed616689 SC |
7826 | static int igb_ndo_set_vf_bw(struct net_device *netdev, int vf, |
7827 | int min_tx_rate, int max_tx_rate) | |
8151d294 | 7828 | { |
17dc566c LL |
7829 | struct igb_adapter *adapter = netdev_priv(netdev); |
7830 | struct e1000_hw *hw = &adapter->hw; | |
7831 | int actual_link_speed; | |
7832 | ||
7833 | if (hw->mac.type != e1000_82576) | |
7834 | return -EOPNOTSUPP; | |
7835 | ||
ed616689 SC |
7836 | if (min_tx_rate) |
7837 | return -EINVAL; | |
7838 | ||
17dc566c LL |
7839 | actual_link_speed = igb_link_mbps(adapter->link_speed); |
7840 | if ((vf >= adapter->vfs_allocated_count) || | |
7841 | (!(rd32(E1000_STATUS) & E1000_STATUS_LU)) || | |
ed616689 SC |
7842 | (max_tx_rate < 0) || |
7843 | (max_tx_rate > actual_link_speed)) | |
17dc566c LL |
7844 | return -EINVAL; |
7845 | ||
7846 | adapter->vf_rate_link_speed = actual_link_speed; | |
ed616689 SC |
7847 | adapter->vf_data[vf].tx_rate = (u16)max_tx_rate; |
7848 | igb_set_vf_rate_limit(hw, vf, max_tx_rate, actual_link_speed); | |
17dc566c LL |
7849 | |
7850 | return 0; | |
8151d294 WM |
7851 | } |
7852 | ||
70ea4783 LL |
7853 | static int igb_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, |
7854 | bool setting) | |
7855 | { | |
7856 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7857 | struct e1000_hw *hw = &adapter->hw; | |
7858 | u32 reg_val, reg_offset; | |
7859 | ||
7860 | if (!adapter->vfs_allocated_count) | |
7861 | return -EOPNOTSUPP; | |
7862 | ||
7863 | if (vf >= adapter->vfs_allocated_count) | |
7864 | return -EINVAL; | |
7865 | ||
7866 | reg_offset = (hw->mac.type == e1000_82576) ? E1000_DTXSWC : E1000_TXSWC; | |
7867 | reg_val = rd32(reg_offset); | |
7868 | if (setting) | |
7869 | reg_val |= ((1 << vf) | | |
7870 | (1 << (vf + E1000_DTXSWC_VLAN_SPOOF_SHIFT))); | |
7871 | else | |
7872 | reg_val &= ~((1 << vf) | | |
7873 | (1 << (vf + E1000_DTXSWC_VLAN_SPOOF_SHIFT))); | |
7874 | wr32(reg_offset, reg_val); | |
7875 | ||
7876 | adapter->vf_data[vf].spoofchk_enabled = setting; | |
23d87824 | 7877 | return 0; |
70ea4783 LL |
7878 | } |
7879 | ||
8151d294 WM |
7880 | static int igb_ndo_get_vf_config(struct net_device *netdev, |
7881 | int vf, struct ifla_vf_info *ivi) | |
7882 | { | |
7883 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7884 | if (vf >= adapter->vfs_allocated_count) | |
7885 | return -EINVAL; | |
7886 | ivi->vf = vf; | |
7887 | memcpy(&ivi->mac, adapter->vf_data[vf].vf_mac_addresses, ETH_ALEN); | |
ed616689 SC |
7888 | ivi->max_tx_rate = adapter->vf_data[vf].tx_rate; |
7889 | ivi->min_tx_rate = 0; | |
8151d294 WM |
7890 | ivi->vlan = adapter->vf_data[vf].pf_vlan; |
7891 | ivi->qos = adapter->vf_data[vf].pf_qos; | |
70ea4783 | 7892 | ivi->spoofchk = adapter->vf_data[vf].spoofchk_enabled; |
8151d294 WM |
7893 | return 0; |
7894 | } | |
7895 | ||
4ae196df AD |
7896 | static void igb_vmm_control(struct igb_adapter *adapter) |
7897 | { | |
7898 | struct e1000_hw *hw = &adapter->hw; | |
10d8e907 | 7899 | u32 reg; |
4ae196df | 7900 | |
52a1dd4d AD |
7901 | switch (hw->mac.type) { |
7902 | case e1000_82575: | |
f96a8a0b CW |
7903 | case e1000_i210: |
7904 | case e1000_i211: | |
ceb5f13b | 7905 | case e1000_i354: |
52a1dd4d AD |
7906 | default: |
7907 | /* replication is not supported for 82575 */ | |
4ae196df | 7908 | return; |
52a1dd4d AD |
7909 | case e1000_82576: |
7910 | /* notify HW that the MAC is adding vlan tags */ | |
7911 | reg = rd32(E1000_DTXCTL); | |
7912 | reg |= E1000_DTXCTL_VLAN_ADDED; | |
7913 | wr32(E1000_DTXCTL, reg); | |
b26141d4 | 7914 | /* Fall through */ |
52a1dd4d AD |
7915 | case e1000_82580: |
7916 | /* enable replication vlan tag stripping */ | |
7917 | reg = rd32(E1000_RPLOLR); | |
7918 | reg |= E1000_RPLOLR_STRVLAN; | |
7919 | wr32(E1000_RPLOLR, reg); | |
b26141d4 | 7920 | /* Fall through */ |
d2ba2ed8 AD |
7921 | case e1000_i350: |
7922 | /* none of the above registers are supported by i350 */ | |
52a1dd4d AD |
7923 | break; |
7924 | } | |
10d8e907 | 7925 | |
d4960307 AD |
7926 | if (adapter->vfs_allocated_count) { |
7927 | igb_vmdq_set_loopback_pf(hw, true); | |
7928 | igb_vmdq_set_replication_pf(hw, true); | |
13800469 | 7929 | igb_vmdq_set_anti_spoofing_pf(hw, true, |
b980ac18 | 7930 | adapter->vfs_allocated_count); |
d4960307 AD |
7931 | } else { |
7932 | igb_vmdq_set_loopback_pf(hw, false); | |
7933 | igb_vmdq_set_replication_pf(hw, false); | |
7934 | } | |
4ae196df AD |
7935 | } |
7936 | ||
b6e0c419 CW |
7937 | static void igb_init_dmac(struct igb_adapter *adapter, u32 pba) |
7938 | { | |
7939 | struct e1000_hw *hw = &adapter->hw; | |
7940 | u32 dmac_thr; | |
7941 | u16 hwm; | |
7942 | ||
7943 | if (hw->mac.type > e1000_82580) { | |
7944 | if (adapter->flags & IGB_FLAG_DMAC) { | |
7945 | u32 reg; | |
7946 | ||
7947 | /* force threshold to 0. */ | |
7948 | wr32(E1000_DMCTXTH, 0); | |
7949 | ||
b980ac18 | 7950 | /* DMA Coalescing high water mark needs to be greater |
e8c626e9 MV |
7951 | * than the Rx threshold. Set hwm to PBA - max frame |
7952 | * size in 16B units, capping it at PBA - 6KB. | |
b6e0c419 | 7953 | */ |
e8c626e9 MV |
7954 | hwm = 64 * pba - adapter->max_frame_size / 16; |
7955 | if (hwm < 64 * (pba - 6)) | |
7956 | hwm = 64 * (pba - 6); | |
7957 | reg = rd32(E1000_FCRTC); | |
7958 | reg &= ~E1000_FCRTC_RTH_COAL_MASK; | |
7959 | reg |= ((hwm << E1000_FCRTC_RTH_COAL_SHIFT) | |
7960 | & E1000_FCRTC_RTH_COAL_MASK); | |
7961 | wr32(E1000_FCRTC, reg); | |
7962 | ||
b980ac18 | 7963 | /* Set the DMA Coalescing Rx threshold to PBA - 2 * max |
e8c626e9 MV |
7964 | * frame size, capping it at PBA - 10KB. |
7965 | */ | |
7966 | dmac_thr = pba - adapter->max_frame_size / 512; | |
7967 | if (dmac_thr < pba - 10) | |
7968 | dmac_thr = pba - 10; | |
b6e0c419 CW |
7969 | reg = rd32(E1000_DMACR); |
7970 | reg &= ~E1000_DMACR_DMACTHR_MASK; | |
b6e0c419 CW |
7971 | reg |= ((dmac_thr << E1000_DMACR_DMACTHR_SHIFT) |
7972 | & E1000_DMACR_DMACTHR_MASK); | |
7973 | ||
7974 | /* transition to L0x or L1 if available..*/ | |
7975 | reg |= (E1000_DMACR_DMAC_EN | E1000_DMACR_DMAC_LX_MASK); | |
7976 | ||
7977 | /* watchdog timer= +-1000 usec in 32usec intervals */ | |
7978 | reg |= (1000 >> 5); | |
0c02dd98 MV |
7979 | |
7980 | /* Disable BMC-to-OS Watchdog Enable */ | |
ceb5f13b CW |
7981 | if (hw->mac.type != e1000_i354) |
7982 | reg &= ~E1000_DMACR_DC_BMC2OSW_EN; | |
7983 | ||
b6e0c419 CW |
7984 | wr32(E1000_DMACR, reg); |
7985 | ||
b980ac18 | 7986 | /* no lower threshold to disable |
b6e0c419 CW |
7987 | * coalescing(smart fifb)-UTRESH=0 |
7988 | */ | |
7989 | wr32(E1000_DMCRTRH, 0); | |
b6e0c419 CW |
7990 | |
7991 | reg = (IGB_DMCTLX_DCFLUSH_DIS | 0x4); | |
7992 | ||
7993 | wr32(E1000_DMCTLX, reg); | |
7994 | ||
b980ac18 | 7995 | /* free space in tx packet buffer to wake from |
b6e0c419 CW |
7996 | * DMA coal |
7997 | */ | |
7998 | wr32(E1000_DMCTXTH, (IGB_MIN_TXPBSIZE - | |
7999 | (IGB_TX_BUF_4096 + adapter->max_frame_size)) >> 6); | |
8000 | ||
b980ac18 | 8001 | /* make low power state decision controlled |
b6e0c419 CW |
8002 | * by DMA coal |
8003 | */ | |
8004 | reg = rd32(E1000_PCIEMISC); | |
8005 | reg &= ~E1000_PCIEMISC_LX_DECISION; | |
8006 | wr32(E1000_PCIEMISC, reg); | |
8007 | } /* endif adapter->dmac is not disabled */ | |
8008 | } else if (hw->mac.type == e1000_82580) { | |
8009 | u32 reg = rd32(E1000_PCIEMISC); | |
9005df38 | 8010 | |
b6e0c419 CW |
8011 | wr32(E1000_PCIEMISC, reg & ~E1000_PCIEMISC_LX_DECISION); |
8012 | wr32(E1000_DMACR, 0); | |
8013 | } | |
8014 | } | |
8015 | ||
b980ac18 JK |
8016 | /** |
8017 | * igb_read_i2c_byte - Reads 8 bit word over I2C | |
441fc6fd CW |
8018 | * @hw: pointer to hardware structure |
8019 | * @byte_offset: byte offset to read | |
8020 | * @dev_addr: device address | |
8021 | * @data: value read | |
8022 | * | |
8023 | * Performs byte read operation over I2C interface at | |
8024 | * a specified device address. | |
b980ac18 | 8025 | **/ |
441fc6fd | 8026 | s32 igb_read_i2c_byte(struct e1000_hw *hw, u8 byte_offset, |
b980ac18 | 8027 | u8 dev_addr, u8 *data) |
441fc6fd CW |
8028 | { |
8029 | struct igb_adapter *adapter = container_of(hw, struct igb_adapter, hw); | |
603e86fa | 8030 | struct i2c_client *this_client = adapter->i2c_client; |
441fc6fd CW |
8031 | s32 status; |
8032 | u16 swfw_mask = 0; | |
8033 | ||
8034 | if (!this_client) | |
8035 | return E1000_ERR_I2C; | |
8036 | ||
8037 | swfw_mask = E1000_SWFW_PHY0_SM; | |
8038 | ||
23d87824 | 8039 | if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask)) |
441fc6fd CW |
8040 | return E1000_ERR_SWFW_SYNC; |
8041 | ||
8042 | status = i2c_smbus_read_byte_data(this_client, byte_offset); | |
8043 | hw->mac.ops.release_swfw_sync(hw, swfw_mask); | |
8044 | ||
8045 | if (status < 0) | |
8046 | return E1000_ERR_I2C; | |
8047 | else { | |
8048 | *data = status; | |
23d87824 | 8049 | return 0; |
441fc6fd CW |
8050 | } |
8051 | } | |
8052 | ||
b980ac18 JK |
8053 | /** |
8054 | * igb_write_i2c_byte - Writes 8 bit word over I2C | |
441fc6fd CW |
8055 | * @hw: pointer to hardware structure |
8056 | * @byte_offset: byte offset to write | |
8057 | * @dev_addr: device address | |
8058 | * @data: value to write | |
8059 | * | |
8060 | * Performs byte write operation over I2C interface at | |
8061 | * a specified device address. | |
b980ac18 | 8062 | **/ |
441fc6fd | 8063 | s32 igb_write_i2c_byte(struct e1000_hw *hw, u8 byte_offset, |
b980ac18 | 8064 | u8 dev_addr, u8 data) |
441fc6fd CW |
8065 | { |
8066 | struct igb_adapter *adapter = container_of(hw, struct igb_adapter, hw); | |
603e86fa | 8067 | struct i2c_client *this_client = adapter->i2c_client; |
441fc6fd CW |
8068 | s32 status; |
8069 | u16 swfw_mask = E1000_SWFW_PHY0_SM; | |
8070 | ||
8071 | if (!this_client) | |
8072 | return E1000_ERR_I2C; | |
8073 | ||
23d87824 | 8074 | if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask)) |
441fc6fd CW |
8075 | return E1000_ERR_SWFW_SYNC; |
8076 | status = i2c_smbus_write_byte_data(this_client, byte_offset, data); | |
8077 | hw->mac.ops.release_swfw_sync(hw, swfw_mask); | |
8078 | ||
8079 | if (status) | |
8080 | return E1000_ERR_I2C; | |
8081 | else | |
23d87824 | 8082 | return 0; |
441fc6fd CW |
8083 | |
8084 | } | |
907b7835 LMV |
8085 | |
8086 | int igb_reinit_queues(struct igb_adapter *adapter) | |
8087 | { | |
8088 | struct net_device *netdev = adapter->netdev; | |
8089 | struct pci_dev *pdev = adapter->pdev; | |
8090 | int err = 0; | |
8091 | ||
8092 | if (netif_running(netdev)) | |
8093 | igb_close(netdev); | |
8094 | ||
02ef6e1d | 8095 | igb_reset_interrupt_capability(adapter); |
907b7835 LMV |
8096 | |
8097 | if (igb_init_interrupt_scheme(adapter, true)) { | |
8098 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); | |
8099 | return -ENOMEM; | |
8100 | } | |
8101 | ||
8102 | if (netif_running(netdev)) | |
8103 | err = igb_open(netdev); | |
8104 | ||
8105 | return err; | |
8106 | } | |
9d5c8243 | 8107 | /* igb_main.c */ |