Commit | Line | Data |
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e52c0f96 CW |
1 | /* Intel(R) Gigabit Ethernet Linux driver |
2 | * Copyright(c) 2007-2014 Intel Corporation. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms and conditions of the GNU General Public License, | |
6 | * version 2, as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope it will be useful, but WITHOUT | |
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
11 | * more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License along with | |
14 | * this program; if not, see <http://www.gnu.org/licenses/>. | |
15 | * | |
16 | * The full GNU General Public License is included in this distribution in | |
17 | * the file called "COPYING". | |
18 | * | |
19 | * Contact Information: | |
20 | * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> | |
21 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
22 | */ | |
9d5c8243 | 23 | |
876d2d6f JK |
24 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
25 | ||
9d5c8243 AK |
26 | #include <linux/module.h> |
27 | #include <linux/types.h> | |
28 | #include <linux/init.h> | |
b2cb09b1 | 29 | #include <linux/bitops.h> |
9d5c8243 AK |
30 | #include <linux/vmalloc.h> |
31 | #include <linux/pagemap.h> | |
32 | #include <linux/netdevice.h> | |
9d5c8243 | 33 | #include <linux/ipv6.h> |
5a0e3ad6 | 34 | #include <linux/slab.h> |
9d5c8243 AK |
35 | #include <net/checksum.h> |
36 | #include <net/ip6_checksum.h> | |
c6cb090b | 37 | #include <linux/net_tstamp.h> |
9d5c8243 AK |
38 | #include <linux/mii.h> |
39 | #include <linux/ethtool.h> | |
01789349 | 40 | #include <linux/if.h> |
9d5c8243 AK |
41 | #include <linux/if_vlan.h> |
42 | #include <linux/pci.h> | |
c54106bb | 43 | #include <linux/pci-aspm.h> |
9d5c8243 AK |
44 | #include <linux/delay.h> |
45 | #include <linux/interrupt.h> | |
7d13a7d0 AD |
46 | #include <linux/ip.h> |
47 | #include <linux/tcp.h> | |
48 | #include <linux/sctp.h> | |
9d5c8243 | 49 | #include <linux/if_ether.h> |
40a914fa | 50 | #include <linux/aer.h> |
70c71606 | 51 | #include <linux/prefetch.h> |
749ab2cd | 52 | #include <linux/pm_runtime.h> |
421e02f0 | 53 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
54 | #include <linux/dca.h> |
55 | #endif | |
441fc6fd | 56 | #include <linux/i2c.h> |
9d5c8243 AK |
57 | #include "igb.h" |
58 | ||
67b1b903 | 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 *); |
cd392f5c | 154 | static bool igb_clean_rx_irq(struct igb_q_vector *, int); |
9d5c8243 AK |
155 | static int igb_ioctl(struct net_device *, struct ifreq *, int cmd); |
156 | static void igb_tx_timeout(struct net_device *); | |
157 | static void igb_reset_task(struct work_struct *); | |
c502ea2e CW |
158 | static void igb_vlan_mode(struct net_device *netdev, |
159 | netdev_features_t features); | |
80d5c368 PM |
160 | static int igb_vlan_rx_add_vid(struct net_device *, __be16, u16); |
161 | static int igb_vlan_rx_kill_vid(struct net_device *, __be16, u16); | |
9d5c8243 | 162 | static void igb_restore_vlan(struct igb_adapter *); |
26ad9178 | 163 | static void igb_rar_set_qsel(struct igb_adapter *, u8 *, u32 , u8); |
4ae196df AD |
164 | static void igb_ping_all_vfs(struct igb_adapter *); |
165 | static void igb_msg_task(struct igb_adapter *); | |
4ae196df | 166 | static void igb_vmm_control(struct igb_adapter *); |
f2ca0dbe | 167 | static int igb_set_vf_mac(struct igb_adapter *, int, unsigned char *); |
4ae196df | 168 | static void igb_restore_vf_multicasts(struct igb_adapter *adapter); |
8151d294 WM |
169 | static int igb_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac); |
170 | static int igb_ndo_set_vf_vlan(struct net_device *netdev, | |
171 | int vf, u16 vlan, u8 qos); | |
ed616689 | 172 | static int igb_ndo_set_vf_bw(struct net_device *, int, int, int); |
70ea4783 LL |
173 | static int igb_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, |
174 | bool setting); | |
8151d294 WM |
175 | static int igb_ndo_get_vf_config(struct net_device *netdev, int vf, |
176 | struct ifla_vf_info *ivi); | |
17dc566c | 177 | static void igb_check_vf_rate_limit(struct igb_adapter *); |
46a01698 RL |
178 | |
179 | #ifdef CONFIG_PCI_IOV | |
0224d663 | 180 | static int igb_vf_configure(struct igb_adapter *adapter, int vf); |
781798a1 | 181 | static int igb_pci_enable_sriov(struct pci_dev *dev, int num_vfs); |
46a01698 | 182 | #endif |
9d5c8243 | 183 | |
9d5c8243 | 184 | #ifdef CONFIG_PM |
d9dd966d | 185 | #ifdef CONFIG_PM_SLEEP |
749ab2cd | 186 | static int igb_suspend(struct device *); |
d9dd966d | 187 | #endif |
749ab2cd | 188 | static int igb_resume(struct device *); |
749ab2cd YZ |
189 | static int igb_runtime_suspend(struct device *dev); |
190 | static int igb_runtime_resume(struct device *dev); | |
191 | static int igb_runtime_idle(struct device *dev); | |
749ab2cd YZ |
192 | static const struct dev_pm_ops igb_pm_ops = { |
193 | SET_SYSTEM_SLEEP_PM_OPS(igb_suspend, igb_resume) | |
194 | SET_RUNTIME_PM_OPS(igb_runtime_suspend, igb_runtime_resume, | |
195 | igb_runtime_idle) | |
196 | }; | |
9d5c8243 AK |
197 | #endif |
198 | static void igb_shutdown(struct pci_dev *); | |
fa44f2f1 | 199 | static int igb_pci_sriov_configure(struct pci_dev *dev, int num_vfs); |
421e02f0 | 200 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
201 | static int igb_notify_dca(struct notifier_block *, unsigned long, void *); |
202 | static struct notifier_block dca_notifier = { | |
203 | .notifier_call = igb_notify_dca, | |
204 | .next = NULL, | |
205 | .priority = 0 | |
206 | }; | |
207 | #endif | |
9d5c8243 AK |
208 | #ifdef CONFIG_NET_POLL_CONTROLLER |
209 | /* for netdump / net console */ | |
210 | static void igb_netpoll(struct net_device *); | |
211 | #endif | |
37680117 | 212 | #ifdef CONFIG_PCI_IOV |
6dd6d2b7 | 213 | static unsigned int max_vfs; |
2a3abf6d | 214 | module_param(max_vfs, uint, 0); |
c75c4edf | 215 | MODULE_PARM_DESC(max_vfs, "Maximum number of virtual functions to allocate per physical function"); |
2a3abf6d AD |
216 | #endif /* CONFIG_PCI_IOV */ |
217 | ||
9d5c8243 AK |
218 | static pci_ers_result_t igb_io_error_detected(struct pci_dev *, |
219 | pci_channel_state_t); | |
220 | static pci_ers_result_t igb_io_slot_reset(struct pci_dev *); | |
221 | static void igb_io_resume(struct pci_dev *); | |
222 | ||
3646f0e5 | 223 | static const struct pci_error_handlers igb_err_handler = { |
9d5c8243 AK |
224 | .error_detected = igb_io_error_detected, |
225 | .slot_reset = igb_io_slot_reset, | |
226 | .resume = igb_io_resume, | |
227 | }; | |
228 | ||
b6e0c419 | 229 | static void igb_init_dmac(struct igb_adapter *adapter, u32 pba); |
9d5c8243 AK |
230 | |
231 | static struct pci_driver igb_driver = { | |
232 | .name = igb_driver_name, | |
233 | .id_table = igb_pci_tbl, | |
234 | .probe = igb_probe, | |
9f9a12f8 | 235 | .remove = igb_remove, |
9d5c8243 | 236 | #ifdef CONFIG_PM |
749ab2cd | 237 | .driver.pm = &igb_pm_ops, |
9d5c8243 AK |
238 | #endif |
239 | .shutdown = igb_shutdown, | |
fa44f2f1 | 240 | .sriov_configure = igb_pci_sriov_configure, |
9d5c8243 AK |
241 | .err_handler = &igb_err_handler |
242 | }; | |
243 | ||
244 | MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>"); | |
245 | MODULE_DESCRIPTION("Intel(R) Gigabit Ethernet Network Driver"); | |
246 | MODULE_LICENSE("GPL"); | |
247 | MODULE_VERSION(DRV_VERSION); | |
248 | ||
b3f4d599 | 249 | #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK) |
250 | static int debug = -1; | |
251 | module_param(debug, int, 0); | |
252 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
253 | ||
c97ec42a TI |
254 | struct igb_reg_info { |
255 | u32 ofs; | |
256 | char *name; | |
257 | }; | |
258 | ||
259 | static const struct igb_reg_info igb_reg_info_tbl[] = { | |
260 | ||
261 | /* General Registers */ | |
262 | {E1000_CTRL, "CTRL"}, | |
263 | {E1000_STATUS, "STATUS"}, | |
264 | {E1000_CTRL_EXT, "CTRL_EXT"}, | |
265 | ||
266 | /* Interrupt Registers */ | |
267 | {E1000_ICR, "ICR"}, | |
268 | ||
269 | /* RX Registers */ | |
270 | {E1000_RCTL, "RCTL"}, | |
271 | {E1000_RDLEN(0), "RDLEN"}, | |
272 | {E1000_RDH(0), "RDH"}, | |
273 | {E1000_RDT(0), "RDT"}, | |
274 | {E1000_RXDCTL(0), "RXDCTL"}, | |
275 | {E1000_RDBAL(0), "RDBAL"}, | |
276 | {E1000_RDBAH(0), "RDBAH"}, | |
277 | ||
278 | /* TX Registers */ | |
279 | {E1000_TCTL, "TCTL"}, | |
280 | {E1000_TDBAL(0), "TDBAL"}, | |
281 | {E1000_TDBAH(0), "TDBAH"}, | |
282 | {E1000_TDLEN(0), "TDLEN"}, | |
283 | {E1000_TDH(0), "TDH"}, | |
284 | {E1000_TDT(0), "TDT"}, | |
285 | {E1000_TXDCTL(0), "TXDCTL"}, | |
286 | {E1000_TDFH, "TDFH"}, | |
287 | {E1000_TDFT, "TDFT"}, | |
288 | {E1000_TDFHS, "TDFHS"}, | |
289 | {E1000_TDFPC, "TDFPC"}, | |
290 | ||
291 | /* List Terminator */ | |
292 | {} | |
293 | }; | |
294 | ||
b980ac18 | 295 | /* igb_regdump - register printout routine */ |
c97ec42a TI |
296 | static void igb_regdump(struct e1000_hw *hw, struct igb_reg_info *reginfo) |
297 | { | |
298 | int n = 0; | |
299 | char rname[16]; | |
300 | u32 regs[8]; | |
301 | ||
302 | switch (reginfo->ofs) { | |
303 | case E1000_RDLEN(0): | |
304 | for (n = 0; n < 4; n++) | |
305 | regs[n] = rd32(E1000_RDLEN(n)); | |
306 | break; | |
307 | case E1000_RDH(0): | |
308 | for (n = 0; n < 4; n++) | |
309 | regs[n] = rd32(E1000_RDH(n)); | |
310 | break; | |
311 | case E1000_RDT(0): | |
312 | for (n = 0; n < 4; n++) | |
313 | regs[n] = rd32(E1000_RDT(n)); | |
314 | break; | |
315 | case E1000_RXDCTL(0): | |
316 | for (n = 0; n < 4; n++) | |
317 | regs[n] = rd32(E1000_RXDCTL(n)); | |
318 | break; | |
319 | case E1000_RDBAL(0): | |
320 | for (n = 0; n < 4; n++) | |
321 | regs[n] = rd32(E1000_RDBAL(n)); | |
322 | break; | |
323 | case E1000_RDBAH(0): | |
324 | for (n = 0; n < 4; n++) | |
325 | regs[n] = rd32(E1000_RDBAH(n)); | |
326 | break; | |
327 | case E1000_TDBAL(0): | |
328 | for (n = 0; n < 4; n++) | |
329 | regs[n] = rd32(E1000_RDBAL(n)); | |
330 | break; | |
331 | case E1000_TDBAH(0): | |
332 | for (n = 0; n < 4; n++) | |
333 | regs[n] = rd32(E1000_TDBAH(n)); | |
334 | break; | |
335 | case E1000_TDLEN(0): | |
336 | for (n = 0; n < 4; n++) | |
337 | regs[n] = rd32(E1000_TDLEN(n)); | |
338 | break; | |
339 | case E1000_TDH(0): | |
340 | for (n = 0; n < 4; n++) | |
341 | regs[n] = rd32(E1000_TDH(n)); | |
342 | break; | |
343 | case E1000_TDT(0): | |
344 | for (n = 0; n < 4; n++) | |
345 | regs[n] = rd32(E1000_TDT(n)); | |
346 | break; | |
347 | case E1000_TXDCTL(0): | |
348 | for (n = 0; n < 4; n++) | |
349 | regs[n] = rd32(E1000_TXDCTL(n)); | |
350 | break; | |
351 | default: | |
876d2d6f | 352 | pr_info("%-15s %08x\n", reginfo->name, rd32(reginfo->ofs)); |
c97ec42a TI |
353 | return; |
354 | } | |
355 | ||
356 | snprintf(rname, 16, "%s%s", reginfo->name, "[0-3]"); | |
876d2d6f JK |
357 | pr_info("%-15s %08x %08x %08x %08x\n", rname, regs[0], regs[1], |
358 | regs[2], regs[3]); | |
c97ec42a TI |
359 | } |
360 | ||
b980ac18 | 361 | /* igb_dump - Print registers, Tx-rings and Rx-rings */ |
c97ec42a TI |
362 | static void igb_dump(struct igb_adapter *adapter) |
363 | { | |
364 | struct net_device *netdev = adapter->netdev; | |
365 | struct e1000_hw *hw = &adapter->hw; | |
366 | struct igb_reg_info *reginfo; | |
c97ec42a TI |
367 | struct igb_ring *tx_ring; |
368 | union e1000_adv_tx_desc *tx_desc; | |
369 | struct my_u0 { u64 a; u64 b; } *u0; | |
c97ec42a TI |
370 | struct igb_ring *rx_ring; |
371 | union e1000_adv_rx_desc *rx_desc; | |
372 | u32 staterr; | |
6ad4edfc | 373 | u16 i, n; |
c97ec42a TI |
374 | |
375 | if (!netif_msg_hw(adapter)) | |
376 | return; | |
377 | ||
378 | /* Print netdevice Info */ | |
379 | if (netdev) { | |
380 | dev_info(&adapter->pdev->dev, "Net device Info\n"); | |
c75c4edf | 381 | pr_info("Device Name state trans_start last_rx\n"); |
876d2d6f JK |
382 | pr_info("%-15s %016lX %016lX %016lX\n", netdev->name, |
383 | netdev->state, netdev->trans_start, netdev->last_rx); | |
c97ec42a TI |
384 | } |
385 | ||
386 | /* Print Registers */ | |
387 | dev_info(&adapter->pdev->dev, "Register Dump\n"); | |
876d2d6f | 388 | pr_info(" Register Name Value\n"); |
c97ec42a TI |
389 | for (reginfo = (struct igb_reg_info *)igb_reg_info_tbl; |
390 | reginfo->name; reginfo++) { | |
391 | igb_regdump(hw, reginfo); | |
392 | } | |
393 | ||
394 | /* Print TX Ring Summary */ | |
395 | if (!netdev || !netif_running(netdev)) | |
396 | goto exit; | |
397 | ||
398 | dev_info(&adapter->pdev->dev, "TX Rings Summary\n"); | |
876d2d6f | 399 | pr_info("Queue [NTU] [NTC] [bi(ntc)->dma ] leng ntw timestamp\n"); |
c97ec42a | 400 | for (n = 0; n < adapter->num_tx_queues; n++) { |
06034649 | 401 | struct igb_tx_buffer *buffer_info; |
c97ec42a | 402 | tx_ring = adapter->tx_ring[n]; |
06034649 | 403 | buffer_info = &tx_ring->tx_buffer_info[tx_ring->next_to_clean]; |
876d2d6f JK |
404 | pr_info(" %5d %5X %5X %016llX %04X %p %016llX\n", |
405 | n, tx_ring->next_to_use, tx_ring->next_to_clean, | |
c9f14bf3 AD |
406 | (u64)dma_unmap_addr(buffer_info, dma), |
407 | dma_unmap_len(buffer_info, len), | |
876d2d6f JK |
408 | buffer_info->next_to_watch, |
409 | (u64)buffer_info->time_stamp); | |
c97ec42a TI |
410 | } |
411 | ||
412 | /* Print TX Rings */ | |
413 | if (!netif_msg_tx_done(adapter)) | |
414 | goto rx_ring_summary; | |
415 | ||
416 | dev_info(&adapter->pdev->dev, "TX Rings Dump\n"); | |
417 | ||
418 | /* Transmit Descriptor Formats | |
419 | * | |
420 | * Advanced Transmit Descriptor | |
421 | * +--------------------------------------------------------------+ | |
422 | * 0 | Buffer Address [63:0] | | |
423 | * +--------------------------------------------------------------+ | |
424 | * 8 | PAYLEN | PORTS |CC|IDX | STA | DCMD |DTYP|MAC|RSV| DTALEN | | |
425 | * +--------------------------------------------------------------+ | |
426 | * 63 46 45 40 39 38 36 35 32 31 24 15 0 | |
427 | */ | |
428 | ||
429 | for (n = 0; n < adapter->num_tx_queues; n++) { | |
430 | tx_ring = adapter->tx_ring[n]; | |
876d2d6f JK |
431 | pr_info("------------------------------------\n"); |
432 | pr_info("TX QUEUE INDEX = %d\n", tx_ring->queue_index); | |
433 | pr_info("------------------------------------\n"); | |
c75c4edf | 434 | pr_info("T [desc] [address 63:0 ] [PlPOCIStDDM Ln] [bi->dma ] leng ntw timestamp bi->skb\n"); |
c97ec42a TI |
435 | |
436 | for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) { | |
876d2d6f | 437 | const char *next_desc; |
06034649 | 438 | struct igb_tx_buffer *buffer_info; |
60136906 | 439 | tx_desc = IGB_TX_DESC(tx_ring, i); |
06034649 | 440 | buffer_info = &tx_ring->tx_buffer_info[i]; |
c97ec42a | 441 | u0 = (struct my_u0 *)tx_desc; |
876d2d6f JK |
442 | if (i == tx_ring->next_to_use && |
443 | i == tx_ring->next_to_clean) | |
444 | next_desc = " NTC/U"; | |
445 | else if (i == tx_ring->next_to_use) | |
446 | next_desc = " NTU"; | |
447 | else if (i == tx_ring->next_to_clean) | |
448 | next_desc = " NTC"; | |
449 | else | |
450 | next_desc = ""; | |
451 | ||
c75c4edf CW |
452 | pr_info("T [0x%03X] %016llX %016llX %016llX %04X %p %016llX %p%s\n", |
453 | i, le64_to_cpu(u0->a), | |
c97ec42a | 454 | le64_to_cpu(u0->b), |
c9f14bf3 AD |
455 | (u64)dma_unmap_addr(buffer_info, dma), |
456 | dma_unmap_len(buffer_info, len), | |
c97ec42a TI |
457 | buffer_info->next_to_watch, |
458 | (u64)buffer_info->time_stamp, | |
876d2d6f | 459 | buffer_info->skb, next_desc); |
c97ec42a | 460 | |
b669588a | 461 | if (netif_msg_pktdata(adapter) && buffer_info->skb) |
c97ec42a TI |
462 | print_hex_dump(KERN_INFO, "", |
463 | DUMP_PREFIX_ADDRESS, | |
b669588a | 464 | 16, 1, buffer_info->skb->data, |
c9f14bf3 AD |
465 | dma_unmap_len(buffer_info, len), |
466 | true); | |
c97ec42a TI |
467 | } |
468 | } | |
469 | ||
470 | /* Print RX Rings Summary */ | |
471 | rx_ring_summary: | |
472 | dev_info(&adapter->pdev->dev, "RX Rings Summary\n"); | |
876d2d6f | 473 | pr_info("Queue [NTU] [NTC]\n"); |
c97ec42a TI |
474 | for (n = 0; n < adapter->num_rx_queues; n++) { |
475 | rx_ring = adapter->rx_ring[n]; | |
876d2d6f JK |
476 | pr_info(" %5d %5X %5X\n", |
477 | n, rx_ring->next_to_use, rx_ring->next_to_clean); | |
c97ec42a TI |
478 | } |
479 | ||
480 | /* Print RX Rings */ | |
481 | if (!netif_msg_rx_status(adapter)) | |
482 | goto exit; | |
483 | ||
484 | dev_info(&adapter->pdev->dev, "RX Rings Dump\n"); | |
485 | ||
486 | /* Advanced Receive Descriptor (Read) Format | |
487 | * 63 1 0 | |
488 | * +-----------------------------------------------------+ | |
489 | * 0 | Packet Buffer Address [63:1] |A0/NSE| | |
490 | * +----------------------------------------------+------+ | |
491 | * 8 | Header Buffer Address [63:1] | DD | | |
492 | * +-----------------------------------------------------+ | |
493 | * | |
494 | * | |
495 | * Advanced Receive Descriptor (Write-Back) Format | |
496 | * | |
497 | * 63 48 47 32 31 30 21 20 17 16 4 3 0 | |
498 | * +------------------------------------------------------+ | |
499 | * 0 | Packet IP |SPH| HDR_LEN | RSV|Packet| RSS | | |
500 | * | Checksum Ident | | | | Type | Type | | |
501 | * +------------------------------------------------------+ | |
502 | * 8 | VLAN Tag | Length | Extended Error | Extended Status | | |
503 | * +------------------------------------------------------+ | |
504 | * 63 48 47 32 31 20 19 0 | |
505 | */ | |
506 | ||
507 | for (n = 0; n < adapter->num_rx_queues; n++) { | |
508 | rx_ring = adapter->rx_ring[n]; | |
876d2d6f JK |
509 | pr_info("------------------------------------\n"); |
510 | pr_info("RX QUEUE INDEX = %d\n", rx_ring->queue_index); | |
511 | pr_info("------------------------------------\n"); | |
c75c4edf CW |
512 | pr_info("R [desc] [ PktBuf A0] [ HeadBuf DD] [bi->dma ] [bi->skb] <-- Adv Rx Read format\n"); |
513 | pr_info("RWB[desc] [PcsmIpSHl PtRs] [vl er S cks ln] ---------------- [bi->skb] <-- Adv Rx Write-Back format\n"); | |
c97ec42a TI |
514 | |
515 | for (i = 0; i < rx_ring->count; i++) { | |
876d2d6f | 516 | const char *next_desc; |
06034649 AD |
517 | struct igb_rx_buffer *buffer_info; |
518 | buffer_info = &rx_ring->rx_buffer_info[i]; | |
60136906 | 519 | rx_desc = IGB_RX_DESC(rx_ring, i); |
c97ec42a TI |
520 | u0 = (struct my_u0 *)rx_desc; |
521 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
876d2d6f JK |
522 | |
523 | if (i == rx_ring->next_to_use) | |
524 | next_desc = " NTU"; | |
525 | else if (i == rx_ring->next_to_clean) | |
526 | next_desc = " NTC"; | |
527 | else | |
528 | next_desc = ""; | |
529 | ||
c97ec42a TI |
530 | if (staterr & E1000_RXD_STAT_DD) { |
531 | /* Descriptor Done */ | |
1a1c225b AD |
532 | pr_info("%s[0x%03X] %016llX %016llX ---------------- %s\n", |
533 | "RWB", i, | |
c97ec42a TI |
534 | le64_to_cpu(u0->a), |
535 | le64_to_cpu(u0->b), | |
1a1c225b | 536 | next_desc); |
c97ec42a | 537 | } else { |
1a1c225b AD |
538 | pr_info("%s[0x%03X] %016llX %016llX %016llX %s\n", |
539 | "R ", i, | |
c97ec42a TI |
540 | le64_to_cpu(u0->a), |
541 | le64_to_cpu(u0->b), | |
542 | (u64)buffer_info->dma, | |
1a1c225b | 543 | next_desc); |
c97ec42a | 544 | |
b669588a | 545 | if (netif_msg_pktdata(adapter) && |
1a1c225b | 546 | buffer_info->dma && buffer_info->page) { |
44390ca6 AD |
547 | print_hex_dump(KERN_INFO, "", |
548 | DUMP_PREFIX_ADDRESS, | |
549 | 16, 1, | |
b669588a ET |
550 | page_address(buffer_info->page) + |
551 | buffer_info->page_offset, | |
de78d1f9 | 552 | IGB_RX_BUFSZ, true); |
c97ec42a TI |
553 | } |
554 | } | |
c97ec42a TI |
555 | } |
556 | } | |
557 | ||
558 | exit: | |
559 | return; | |
560 | } | |
561 | ||
b980ac18 JK |
562 | /** |
563 | * igb_get_i2c_data - Reads the I2C SDA data bit | |
441fc6fd CW |
564 | * @hw: pointer to hardware structure |
565 | * @i2cctl: Current value of I2CCTL register | |
566 | * | |
567 | * Returns the I2C data bit value | |
b980ac18 | 568 | **/ |
441fc6fd CW |
569 | static int igb_get_i2c_data(void *data) |
570 | { | |
571 | struct igb_adapter *adapter = (struct igb_adapter *)data; | |
572 | struct e1000_hw *hw = &adapter->hw; | |
573 | s32 i2cctl = rd32(E1000_I2CPARAMS); | |
574 | ||
da1f1dfe | 575 | return !!(i2cctl & E1000_I2C_DATA_IN); |
441fc6fd CW |
576 | } |
577 | ||
b980ac18 JK |
578 | /** |
579 | * igb_set_i2c_data - Sets the I2C data bit | |
441fc6fd CW |
580 | * @data: pointer to hardware structure |
581 | * @state: I2C data value (0 or 1) to set | |
582 | * | |
583 | * Sets the I2C data bit | |
b980ac18 | 584 | **/ |
441fc6fd CW |
585 | static void igb_set_i2c_data(void *data, int state) |
586 | { | |
587 | struct igb_adapter *adapter = (struct igb_adapter *)data; | |
588 | struct e1000_hw *hw = &adapter->hw; | |
589 | s32 i2cctl = rd32(E1000_I2CPARAMS); | |
590 | ||
591 | if (state) | |
592 | i2cctl |= E1000_I2C_DATA_OUT; | |
593 | else | |
594 | i2cctl &= ~E1000_I2C_DATA_OUT; | |
595 | ||
596 | i2cctl &= ~E1000_I2C_DATA_OE_N; | |
597 | i2cctl |= E1000_I2C_CLK_OE_N; | |
598 | wr32(E1000_I2CPARAMS, i2cctl); | |
599 | wrfl(); | |
600 | ||
601 | } | |
602 | ||
b980ac18 JK |
603 | /** |
604 | * igb_set_i2c_clk - Sets the I2C SCL clock | |
441fc6fd CW |
605 | * @data: pointer to hardware structure |
606 | * @state: state to set clock | |
607 | * | |
608 | * Sets the I2C clock line to state | |
b980ac18 | 609 | **/ |
441fc6fd CW |
610 | static void igb_set_i2c_clk(void *data, int state) |
611 | { | |
612 | struct igb_adapter *adapter = (struct igb_adapter *)data; | |
613 | struct e1000_hw *hw = &adapter->hw; | |
614 | s32 i2cctl = rd32(E1000_I2CPARAMS); | |
615 | ||
616 | if (state) { | |
617 | i2cctl |= E1000_I2C_CLK_OUT; | |
618 | i2cctl &= ~E1000_I2C_CLK_OE_N; | |
619 | } else { | |
620 | i2cctl &= ~E1000_I2C_CLK_OUT; | |
621 | i2cctl &= ~E1000_I2C_CLK_OE_N; | |
622 | } | |
623 | wr32(E1000_I2CPARAMS, i2cctl); | |
624 | wrfl(); | |
625 | } | |
626 | ||
b980ac18 JK |
627 | /** |
628 | * igb_get_i2c_clk - Gets the I2C SCL clock state | |
441fc6fd CW |
629 | * @data: pointer to hardware structure |
630 | * | |
631 | * Gets the I2C clock state | |
b980ac18 | 632 | **/ |
441fc6fd CW |
633 | static int igb_get_i2c_clk(void *data) |
634 | { | |
635 | struct igb_adapter *adapter = (struct igb_adapter *)data; | |
636 | struct e1000_hw *hw = &adapter->hw; | |
637 | s32 i2cctl = rd32(E1000_I2CPARAMS); | |
638 | ||
da1f1dfe | 639 | return !!(i2cctl & E1000_I2C_CLK_IN); |
441fc6fd CW |
640 | } |
641 | ||
642 | static const struct i2c_algo_bit_data igb_i2c_algo = { | |
643 | .setsda = igb_set_i2c_data, | |
644 | .setscl = igb_set_i2c_clk, | |
645 | .getsda = igb_get_i2c_data, | |
646 | .getscl = igb_get_i2c_clk, | |
647 | .udelay = 5, | |
648 | .timeout = 20, | |
649 | }; | |
650 | ||
9d5c8243 | 651 | /** |
b980ac18 JK |
652 | * igb_get_hw_dev - return device |
653 | * @hw: pointer to hardware structure | |
654 | * | |
655 | * used by hardware layer to print debugging information | |
9d5c8243 | 656 | **/ |
c041076a | 657 | struct net_device *igb_get_hw_dev(struct e1000_hw *hw) |
9d5c8243 AK |
658 | { |
659 | struct igb_adapter *adapter = hw->back; | |
c041076a | 660 | return adapter->netdev; |
9d5c8243 | 661 | } |
38c845c7 | 662 | |
9d5c8243 | 663 | /** |
b980ac18 | 664 | * igb_init_module - Driver Registration Routine |
9d5c8243 | 665 | * |
b980ac18 JK |
666 | * igb_init_module is the first routine called when the driver is |
667 | * loaded. All it does is register with the PCI subsystem. | |
9d5c8243 AK |
668 | **/ |
669 | static int __init igb_init_module(void) | |
670 | { | |
671 | int ret; | |
9005df38 | 672 | |
876d2d6f | 673 | pr_info("%s - version %s\n", |
9d5c8243 | 674 | igb_driver_string, igb_driver_version); |
876d2d6f | 675 | pr_info("%s\n", igb_copyright); |
9d5c8243 | 676 | |
421e02f0 | 677 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
678 | dca_register_notify(&dca_notifier); |
679 | #endif | |
bbd98fe4 | 680 | ret = pci_register_driver(&igb_driver); |
9d5c8243 AK |
681 | return ret; |
682 | } | |
683 | ||
684 | module_init(igb_init_module); | |
685 | ||
686 | /** | |
b980ac18 | 687 | * igb_exit_module - Driver Exit Cleanup Routine |
9d5c8243 | 688 | * |
b980ac18 JK |
689 | * igb_exit_module is called just before the driver is removed |
690 | * from memory. | |
9d5c8243 AK |
691 | **/ |
692 | static void __exit igb_exit_module(void) | |
693 | { | |
421e02f0 | 694 | #ifdef CONFIG_IGB_DCA |
fe4506b6 JC |
695 | dca_unregister_notify(&dca_notifier); |
696 | #endif | |
9d5c8243 AK |
697 | pci_unregister_driver(&igb_driver); |
698 | } | |
699 | ||
700 | module_exit(igb_exit_module); | |
701 | ||
26bc19ec AD |
702 | #define Q_IDX_82576(i) (((i & 0x1) << 3) + (i >> 1)) |
703 | /** | |
b980ac18 JK |
704 | * igb_cache_ring_register - Descriptor ring to register mapping |
705 | * @adapter: board private structure to initialize | |
26bc19ec | 706 | * |
b980ac18 JK |
707 | * Once we know the feature-set enabled for the device, we'll cache |
708 | * the register offset the descriptor ring is assigned to. | |
26bc19ec AD |
709 | **/ |
710 | static void igb_cache_ring_register(struct igb_adapter *adapter) | |
711 | { | |
ee1b9f06 | 712 | int i = 0, j = 0; |
047e0030 | 713 | u32 rbase_offset = adapter->vfs_allocated_count; |
26bc19ec AD |
714 | |
715 | switch (adapter->hw.mac.type) { | |
716 | case e1000_82576: | |
717 | /* The queues are allocated for virtualization such that VF 0 | |
718 | * is allocated queues 0 and 8, VF 1 queues 1 and 9, etc. | |
719 | * In order to avoid collision we start at the first free queue | |
720 | * and continue consuming queues in the same sequence | |
721 | */ | |
ee1b9f06 | 722 | if (adapter->vfs_allocated_count) { |
a99955fc | 723 | for (; i < adapter->rss_queues; i++) |
3025a446 | 724 | adapter->rx_ring[i]->reg_idx = rbase_offset + |
b980ac18 | 725 | Q_IDX_82576(i); |
ee1b9f06 | 726 | } |
b26141d4 | 727 | /* Fall through */ |
26bc19ec | 728 | case e1000_82575: |
55cac248 | 729 | case e1000_82580: |
d2ba2ed8 | 730 | case e1000_i350: |
ceb5f13b | 731 | case e1000_i354: |
f96a8a0b CW |
732 | case e1000_i210: |
733 | case e1000_i211: | |
b26141d4 | 734 | /* Fall through */ |
26bc19ec | 735 | default: |
ee1b9f06 | 736 | for (; i < adapter->num_rx_queues; i++) |
3025a446 | 737 | adapter->rx_ring[i]->reg_idx = rbase_offset + i; |
ee1b9f06 | 738 | for (; j < adapter->num_tx_queues; j++) |
3025a446 | 739 | adapter->tx_ring[j]->reg_idx = rbase_offset + j; |
26bc19ec AD |
740 | break; |
741 | } | |
742 | } | |
743 | ||
22a8b291 FT |
744 | u32 igb_rd32(struct e1000_hw *hw, u32 reg) |
745 | { | |
746 | struct igb_adapter *igb = container_of(hw, struct igb_adapter, hw); | |
747 | u8 __iomem *hw_addr = ACCESS_ONCE(hw->hw_addr); | |
748 | u32 value = 0; | |
749 | ||
750 | if (E1000_REMOVED(hw_addr)) | |
751 | return ~value; | |
752 | ||
753 | value = readl(&hw_addr[reg]); | |
754 | ||
755 | /* reads should not return all F's */ | |
756 | if (!(~value) && (!reg || !(~readl(hw_addr)))) { | |
757 | struct net_device *netdev = igb->netdev; | |
758 | hw->hw_addr = NULL; | |
759 | netif_device_detach(netdev); | |
760 | netdev_err(netdev, "PCIe link lost, device now detached\n"); | |
761 | } | |
762 | ||
763 | return value; | |
764 | } | |
765 | ||
4be000c8 AD |
766 | /** |
767 | * igb_write_ivar - configure ivar for given MSI-X vector | |
768 | * @hw: pointer to the HW structure | |
769 | * @msix_vector: vector number we are allocating to a given ring | |
770 | * @index: row index of IVAR register to write within IVAR table | |
771 | * @offset: column offset of in IVAR, should be multiple of 8 | |
772 | * | |
773 | * This function is intended to handle the writing of the IVAR register | |
774 | * for adapters 82576 and newer. The IVAR table consists of 2 columns, | |
775 | * each containing an cause allocation for an Rx and Tx ring, and a | |
776 | * variable number of rows depending on the number of queues supported. | |
777 | **/ | |
778 | static void igb_write_ivar(struct e1000_hw *hw, int msix_vector, | |
779 | int index, int offset) | |
780 | { | |
781 | u32 ivar = array_rd32(E1000_IVAR0, index); | |
782 | ||
783 | /* clear any bits that are currently set */ | |
784 | ivar &= ~((u32)0xFF << offset); | |
785 | ||
786 | /* write vector and valid bit */ | |
787 | ivar |= (msix_vector | E1000_IVAR_VALID) << offset; | |
788 | ||
789 | array_wr32(E1000_IVAR0, index, ivar); | |
790 | } | |
791 | ||
9d5c8243 | 792 | #define IGB_N0_QUEUE -1 |
047e0030 | 793 | static void igb_assign_vector(struct igb_q_vector *q_vector, int msix_vector) |
9d5c8243 | 794 | { |
047e0030 | 795 | struct igb_adapter *adapter = q_vector->adapter; |
9d5c8243 | 796 | struct e1000_hw *hw = &adapter->hw; |
047e0030 AD |
797 | int rx_queue = IGB_N0_QUEUE; |
798 | int tx_queue = IGB_N0_QUEUE; | |
4be000c8 | 799 | u32 msixbm = 0; |
047e0030 | 800 | |
0ba82994 AD |
801 | if (q_vector->rx.ring) |
802 | rx_queue = q_vector->rx.ring->reg_idx; | |
803 | if (q_vector->tx.ring) | |
804 | tx_queue = q_vector->tx.ring->reg_idx; | |
2d064c06 AD |
805 | |
806 | switch (hw->mac.type) { | |
807 | case e1000_82575: | |
9d5c8243 | 808 | /* The 82575 assigns vectors using a bitmask, which matches the |
b980ac18 JK |
809 | * bitmask for the EICR/EIMS/EIMC registers. To assign one |
810 | * or more queues to a vector, we write the appropriate bits | |
811 | * into the MSIXBM register for that vector. | |
812 | */ | |
047e0030 | 813 | if (rx_queue > IGB_N0_QUEUE) |
9d5c8243 | 814 | msixbm = E1000_EICR_RX_QUEUE0 << rx_queue; |
047e0030 | 815 | if (tx_queue > IGB_N0_QUEUE) |
9d5c8243 | 816 | msixbm |= E1000_EICR_TX_QUEUE0 << tx_queue; |
cd14ef54 | 817 | if (!(adapter->flags & IGB_FLAG_HAS_MSIX) && msix_vector == 0) |
feeb2721 | 818 | msixbm |= E1000_EIMS_OTHER; |
9d5c8243 | 819 | array_wr32(E1000_MSIXBM(0), msix_vector, msixbm); |
047e0030 | 820 | q_vector->eims_value = msixbm; |
2d064c06 AD |
821 | break; |
822 | case e1000_82576: | |
b980ac18 | 823 | /* 82576 uses a table that essentially consists of 2 columns |
4be000c8 AD |
824 | * with 8 rows. The ordering is column-major so we use the |
825 | * lower 3 bits as the row index, and the 4th bit as the | |
826 | * column offset. | |
827 | */ | |
828 | if (rx_queue > IGB_N0_QUEUE) | |
829 | igb_write_ivar(hw, msix_vector, | |
830 | rx_queue & 0x7, | |
831 | (rx_queue & 0x8) << 1); | |
832 | if (tx_queue > IGB_N0_QUEUE) | |
833 | igb_write_ivar(hw, msix_vector, | |
834 | tx_queue & 0x7, | |
835 | ((tx_queue & 0x8) << 1) + 8); | |
047e0030 | 836 | q_vector->eims_value = 1 << msix_vector; |
2d064c06 | 837 | break; |
55cac248 | 838 | case e1000_82580: |
d2ba2ed8 | 839 | case e1000_i350: |
ceb5f13b | 840 | case e1000_i354: |
f96a8a0b CW |
841 | case e1000_i210: |
842 | case e1000_i211: | |
b980ac18 | 843 | /* On 82580 and newer adapters the scheme is similar to 82576 |
4be000c8 AD |
844 | * however instead of ordering column-major we have things |
845 | * ordered row-major. So we traverse the table by using | |
846 | * bit 0 as the column offset, and the remaining bits as the | |
847 | * row index. | |
848 | */ | |
849 | if (rx_queue > IGB_N0_QUEUE) | |
850 | igb_write_ivar(hw, msix_vector, | |
851 | rx_queue >> 1, | |
852 | (rx_queue & 0x1) << 4); | |
853 | if (tx_queue > IGB_N0_QUEUE) | |
854 | igb_write_ivar(hw, msix_vector, | |
855 | tx_queue >> 1, | |
856 | ((tx_queue & 0x1) << 4) + 8); | |
55cac248 AD |
857 | q_vector->eims_value = 1 << msix_vector; |
858 | break; | |
2d064c06 AD |
859 | default: |
860 | BUG(); | |
861 | break; | |
862 | } | |
26b39276 AD |
863 | |
864 | /* add q_vector eims value to global eims_enable_mask */ | |
865 | adapter->eims_enable_mask |= q_vector->eims_value; | |
866 | ||
867 | /* configure q_vector to set itr on first interrupt */ | |
868 | q_vector->set_itr = 1; | |
9d5c8243 AK |
869 | } |
870 | ||
871 | /** | |
b980ac18 JK |
872 | * igb_configure_msix - Configure MSI-X hardware |
873 | * @adapter: board private structure to initialize | |
9d5c8243 | 874 | * |
b980ac18 JK |
875 | * igb_configure_msix sets up the hardware to properly |
876 | * generate MSI-X interrupts. | |
9d5c8243 AK |
877 | **/ |
878 | static void igb_configure_msix(struct igb_adapter *adapter) | |
879 | { | |
880 | u32 tmp; | |
881 | int i, vector = 0; | |
882 | struct e1000_hw *hw = &adapter->hw; | |
883 | ||
884 | adapter->eims_enable_mask = 0; | |
9d5c8243 AK |
885 | |
886 | /* set vector for other causes, i.e. link changes */ | |
2d064c06 AD |
887 | switch (hw->mac.type) { |
888 | case e1000_82575: | |
9d5c8243 AK |
889 | tmp = rd32(E1000_CTRL_EXT); |
890 | /* enable MSI-X PBA support*/ | |
891 | tmp |= E1000_CTRL_EXT_PBA_CLR; | |
892 | ||
893 | /* Auto-Mask interrupts upon ICR read. */ | |
894 | tmp |= E1000_CTRL_EXT_EIAME; | |
895 | tmp |= E1000_CTRL_EXT_IRCA; | |
896 | ||
897 | wr32(E1000_CTRL_EXT, tmp); | |
047e0030 AD |
898 | |
899 | /* enable msix_other interrupt */ | |
b980ac18 | 900 | array_wr32(E1000_MSIXBM(0), vector++, E1000_EIMS_OTHER); |
844290e5 | 901 | adapter->eims_other = E1000_EIMS_OTHER; |
9d5c8243 | 902 | |
2d064c06 AD |
903 | break; |
904 | ||
905 | case e1000_82576: | |
55cac248 | 906 | case e1000_82580: |
d2ba2ed8 | 907 | case e1000_i350: |
ceb5f13b | 908 | case e1000_i354: |
f96a8a0b CW |
909 | case e1000_i210: |
910 | case e1000_i211: | |
047e0030 | 911 | /* Turn on MSI-X capability first, or our settings |
b980ac18 JK |
912 | * won't stick. And it will take days to debug. |
913 | */ | |
047e0030 | 914 | wr32(E1000_GPIE, E1000_GPIE_MSIX_MODE | |
b980ac18 JK |
915 | E1000_GPIE_PBA | E1000_GPIE_EIAME | |
916 | E1000_GPIE_NSICR); | |
047e0030 AD |
917 | |
918 | /* enable msix_other interrupt */ | |
919 | adapter->eims_other = 1 << vector; | |
2d064c06 | 920 | tmp = (vector++ | E1000_IVAR_VALID) << 8; |
2d064c06 | 921 | |
047e0030 | 922 | wr32(E1000_IVAR_MISC, tmp); |
2d064c06 AD |
923 | break; |
924 | default: | |
925 | /* do nothing, since nothing else supports MSI-X */ | |
926 | break; | |
927 | } /* switch (hw->mac.type) */ | |
047e0030 AD |
928 | |
929 | adapter->eims_enable_mask |= adapter->eims_other; | |
930 | ||
26b39276 AD |
931 | for (i = 0; i < adapter->num_q_vectors; i++) |
932 | igb_assign_vector(adapter->q_vector[i], vector++); | |
047e0030 | 933 | |
9d5c8243 AK |
934 | wrfl(); |
935 | } | |
936 | ||
937 | /** | |
b980ac18 JK |
938 | * igb_request_msix - Initialize MSI-X interrupts |
939 | * @adapter: board private structure to initialize | |
9d5c8243 | 940 | * |
b980ac18 JK |
941 | * igb_request_msix allocates MSI-X vectors and requests interrupts from the |
942 | * kernel. | |
9d5c8243 AK |
943 | **/ |
944 | static int igb_request_msix(struct igb_adapter *adapter) | |
945 | { | |
946 | struct net_device *netdev = adapter->netdev; | |
047e0030 | 947 | struct e1000_hw *hw = &adapter->hw; |
52285b76 | 948 | int i, err = 0, vector = 0, free_vector = 0; |
9d5c8243 | 949 | |
047e0030 | 950 | err = request_irq(adapter->msix_entries[vector].vector, |
b980ac18 | 951 | igb_msix_other, 0, netdev->name, adapter); |
047e0030 | 952 | if (err) |
52285b76 | 953 | goto err_out; |
047e0030 AD |
954 | |
955 | for (i = 0; i < adapter->num_q_vectors; i++) { | |
956 | struct igb_q_vector *q_vector = adapter->q_vector[i]; | |
957 | ||
52285b76 SA |
958 | vector++; |
959 | ||
047e0030 AD |
960 | q_vector->itr_register = hw->hw_addr + E1000_EITR(vector); |
961 | ||
0ba82994 | 962 | if (q_vector->rx.ring && q_vector->tx.ring) |
047e0030 | 963 | sprintf(q_vector->name, "%s-TxRx-%u", netdev->name, |
0ba82994 AD |
964 | q_vector->rx.ring->queue_index); |
965 | else if (q_vector->tx.ring) | |
047e0030 | 966 | sprintf(q_vector->name, "%s-tx-%u", netdev->name, |
0ba82994 AD |
967 | q_vector->tx.ring->queue_index); |
968 | else if (q_vector->rx.ring) | |
047e0030 | 969 | sprintf(q_vector->name, "%s-rx-%u", netdev->name, |
0ba82994 | 970 | q_vector->rx.ring->queue_index); |
9d5c8243 | 971 | else |
047e0030 AD |
972 | sprintf(q_vector->name, "%s-unused", netdev->name); |
973 | ||
9d5c8243 | 974 | err = request_irq(adapter->msix_entries[vector].vector, |
b980ac18 JK |
975 | igb_msix_ring, 0, q_vector->name, |
976 | q_vector); | |
9d5c8243 | 977 | if (err) |
52285b76 | 978 | goto err_free; |
9d5c8243 AK |
979 | } |
980 | ||
9d5c8243 AK |
981 | igb_configure_msix(adapter); |
982 | return 0; | |
52285b76 SA |
983 | |
984 | err_free: | |
985 | /* free already assigned IRQs */ | |
986 | free_irq(adapter->msix_entries[free_vector++].vector, adapter); | |
987 | ||
988 | vector--; | |
989 | for (i = 0; i < vector; i++) { | |
990 | free_irq(adapter->msix_entries[free_vector++].vector, | |
991 | adapter->q_vector[i]); | |
992 | } | |
993 | err_out: | |
9d5c8243 AK |
994 | return err; |
995 | } | |
996 | ||
5536d210 | 997 | /** |
b980ac18 JK |
998 | * igb_free_q_vector - Free memory allocated for specific interrupt vector |
999 | * @adapter: board private structure to initialize | |
1000 | * @v_idx: Index of vector to be freed | |
5536d210 | 1001 | * |
02ef6e1d | 1002 | * This function frees the memory allocated to the q_vector. |
5536d210 AD |
1003 | **/ |
1004 | static void igb_free_q_vector(struct igb_adapter *adapter, int v_idx) | |
1005 | { | |
1006 | struct igb_q_vector *q_vector = adapter->q_vector[v_idx]; | |
1007 | ||
02ef6e1d CW |
1008 | adapter->q_vector[v_idx] = NULL; |
1009 | ||
1010 | /* igb_get_stats64() might access the rings on this vector, | |
1011 | * we must wait a grace period before freeing it. | |
1012 | */ | |
17a402a0 CW |
1013 | if (q_vector) |
1014 | kfree_rcu(q_vector, rcu); | |
02ef6e1d CW |
1015 | } |
1016 | ||
1017 | /** | |
1018 | * igb_reset_q_vector - Reset config for interrupt vector | |
1019 | * @adapter: board private structure to initialize | |
1020 | * @v_idx: Index of vector to be reset | |
1021 | * | |
1022 | * If NAPI is enabled it will delete any references to the | |
1023 | * NAPI struct. This is preparation for igb_free_q_vector. | |
1024 | **/ | |
1025 | static void igb_reset_q_vector(struct igb_adapter *adapter, int v_idx) | |
1026 | { | |
1027 | struct igb_q_vector *q_vector = adapter->q_vector[v_idx]; | |
1028 | ||
cb06d102 CP |
1029 | /* Coming from igb_set_interrupt_capability, the vectors are not yet |
1030 | * allocated. So, q_vector is NULL so we should stop here. | |
1031 | */ | |
1032 | if (!q_vector) | |
1033 | return; | |
1034 | ||
5536d210 AD |
1035 | if (q_vector->tx.ring) |
1036 | adapter->tx_ring[q_vector->tx.ring->queue_index] = NULL; | |
1037 | ||
1038 | if (q_vector->rx.ring) | |
2439fc4d | 1039 | adapter->rx_ring[q_vector->rx.ring->queue_index] = NULL; |
5536d210 | 1040 | |
5536d210 AD |
1041 | netif_napi_del(&q_vector->napi); |
1042 | ||
02ef6e1d CW |
1043 | } |
1044 | ||
1045 | static void igb_reset_interrupt_capability(struct igb_adapter *adapter) | |
1046 | { | |
1047 | int v_idx = adapter->num_q_vectors; | |
1048 | ||
cd14ef54 | 1049 | if (adapter->flags & IGB_FLAG_HAS_MSIX) |
02ef6e1d | 1050 | pci_disable_msix(adapter->pdev); |
cd14ef54 | 1051 | else if (adapter->flags & IGB_FLAG_HAS_MSI) |
02ef6e1d | 1052 | pci_disable_msi(adapter->pdev); |
02ef6e1d CW |
1053 | |
1054 | while (v_idx--) | |
1055 | igb_reset_q_vector(adapter, v_idx); | |
5536d210 AD |
1056 | } |
1057 | ||
047e0030 | 1058 | /** |
b980ac18 JK |
1059 | * igb_free_q_vectors - Free memory allocated for interrupt vectors |
1060 | * @adapter: board private structure to initialize | |
047e0030 | 1061 | * |
b980ac18 JK |
1062 | * This function frees the memory allocated to the q_vectors. In addition if |
1063 | * NAPI is enabled it will delete any references to the NAPI struct prior | |
1064 | * to freeing the q_vector. | |
047e0030 AD |
1065 | **/ |
1066 | static void igb_free_q_vectors(struct igb_adapter *adapter) | |
1067 | { | |
5536d210 AD |
1068 | int v_idx = adapter->num_q_vectors; |
1069 | ||
1070 | adapter->num_tx_queues = 0; | |
1071 | adapter->num_rx_queues = 0; | |
047e0030 | 1072 | adapter->num_q_vectors = 0; |
5536d210 | 1073 | |
02ef6e1d CW |
1074 | while (v_idx--) { |
1075 | igb_reset_q_vector(adapter, v_idx); | |
5536d210 | 1076 | igb_free_q_vector(adapter, v_idx); |
02ef6e1d | 1077 | } |
047e0030 AD |
1078 | } |
1079 | ||
1080 | /** | |
b980ac18 JK |
1081 | * igb_clear_interrupt_scheme - reset the device to a state of no interrupts |
1082 | * @adapter: board private structure to initialize | |
047e0030 | 1083 | * |
b980ac18 JK |
1084 | * This function resets the device so that it has 0 Rx queues, Tx queues, and |
1085 | * MSI-X interrupts allocated. | |
047e0030 AD |
1086 | */ |
1087 | static void igb_clear_interrupt_scheme(struct igb_adapter *adapter) | |
1088 | { | |
047e0030 AD |
1089 | igb_free_q_vectors(adapter); |
1090 | igb_reset_interrupt_capability(adapter); | |
1091 | } | |
9d5c8243 AK |
1092 | |
1093 | /** | |
b980ac18 JK |
1094 | * igb_set_interrupt_capability - set MSI or MSI-X if supported |
1095 | * @adapter: board private structure to initialize | |
1096 | * @msix: boolean value of MSIX capability | |
9d5c8243 | 1097 | * |
b980ac18 JK |
1098 | * Attempt to configure interrupts using the best available |
1099 | * capabilities of the hardware and kernel. | |
9d5c8243 | 1100 | **/ |
53c7d064 | 1101 | static void igb_set_interrupt_capability(struct igb_adapter *adapter, bool msix) |
9d5c8243 AK |
1102 | { |
1103 | int err; | |
1104 | int numvecs, i; | |
1105 | ||
53c7d064 SA |
1106 | if (!msix) |
1107 | goto msi_only; | |
cd14ef54 | 1108 | adapter->flags |= IGB_FLAG_HAS_MSIX; |
53c7d064 | 1109 | |
83b7180d | 1110 | /* Number of supported queues. */ |
a99955fc | 1111 | adapter->num_rx_queues = adapter->rss_queues; |
5fa8517f GR |
1112 | if (adapter->vfs_allocated_count) |
1113 | adapter->num_tx_queues = 1; | |
1114 | else | |
1115 | adapter->num_tx_queues = adapter->rss_queues; | |
83b7180d | 1116 | |
b980ac18 | 1117 | /* start with one vector for every Rx queue */ |
047e0030 AD |
1118 | numvecs = adapter->num_rx_queues; |
1119 | ||
b980ac18 | 1120 | /* if Tx handler is separate add 1 for every Tx queue */ |
a99955fc AD |
1121 | if (!(adapter->flags & IGB_FLAG_QUEUE_PAIRS)) |
1122 | numvecs += adapter->num_tx_queues; | |
047e0030 AD |
1123 | |
1124 | /* store the number of vectors reserved for queues */ | |
1125 | adapter->num_q_vectors = numvecs; | |
1126 | ||
1127 | /* add 1 vector for link status interrupts */ | |
1128 | numvecs++; | |
9d5c8243 AK |
1129 | for (i = 0; i < numvecs; i++) |
1130 | adapter->msix_entries[i].entry = i; | |
1131 | ||
479d02df AG |
1132 | err = pci_enable_msix_range(adapter->pdev, |
1133 | adapter->msix_entries, | |
1134 | numvecs, | |
1135 | numvecs); | |
1136 | if (err > 0) | |
0c2cc02e | 1137 | return; |
9d5c8243 AK |
1138 | |
1139 | igb_reset_interrupt_capability(adapter); | |
1140 | ||
1141 | /* If we can't do MSI-X, try MSI */ | |
1142 | msi_only: | |
b709323d | 1143 | adapter->flags &= ~IGB_FLAG_HAS_MSIX; |
2a3abf6d AD |
1144 | #ifdef CONFIG_PCI_IOV |
1145 | /* disable SR-IOV for non MSI-X configurations */ | |
1146 | if (adapter->vf_data) { | |
1147 | struct e1000_hw *hw = &adapter->hw; | |
1148 | /* disable iov and allow time for transactions to clear */ | |
1149 | pci_disable_sriov(adapter->pdev); | |
1150 | msleep(500); | |
1151 | ||
1152 | kfree(adapter->vf_data); | |
1153 | adapter->vf_data = NULL; | |
1154 | wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ); | |
945a5151 | 1155 | wrfl(); |
2a3abf6d AD |
1156 | msleep(100); |
1157 | dev_info(&adapter->pdev->dev, "IOV Disabled\n"); | |
1158 | } | |
1159 | #endif | |
4fc82adf | 1160 | adapter->vfs_allocated_count = 0; |
a99955fc | 1161 | adapter->rss_queues = 1; |
4fc82adf | 1162 | adapter->flags |= IGB_FLAG_QUEUE_PAIRS; |
9d5c8243 | 1163 | adapter->num_rx_queues = 1; |
661086df | 1164 | adapter->num_tx_queues = 1; |
047e0030 | 1165 | adapter->num_q_vectors = 1; |
9d5c8243 | 1166 | if (!pci_enable_msi(adapter->pdev)) |
7dfc16fa | 1167 | adapter->flags |= IGB_FLAG_HAS_MSI; |
9d5c8243 AK |
1168 | } |
1169 | ||
5536d210 AD |
1170 | static void igb_add_ring(struct igb_ring *ring, |
1171 | struct igb_ring_container *head) | |
1172 | { | |
1173 | head->ring = ring; | |
1174 | head->count++; | |
1175 | } | |
1176 | ||
047e0030 | 1177 | /** |
b980ac18 JK |
1178 | * igb_alloc_q_vector - Allocate memory for a single interrupt vector |
1179 | * @adapter: board private structure to initialize | |
1180 | * @v_count: q_vectors allocated on adapter, used for ring interleaving | |
1181 | * @v_idx: index of vector in adapter struct | |
1182 | * @txr_count: total number of Tx rings to allocate | |
1183 | * @txr_idx: index of first Tx ring to allocate | |
1184 | * @rxr_count: total number of Rx rings to allocate | |
1185 | * @rxr_idx: index of first Rx ring to allocate | |
047e0030 | 1186 | * |
b980ac18 | 1187 | * We allocate one q_vector. If allocation fails we return -ENOMEM. |
047e0030 | 1188 | **/ |
5536d210 AD |
1189 | static int igb_alloc_q_vector(struct igb_adapter *adapter, |
1190 | int v_count, int v_idx, | |
1191 | int txr_count, int txr_idx, | |
1192 | int rxr_count, int rxr_idx) | |
047e0030 AD |
1193 | { |
1194 | struct igb_q_vector *q_vector; | |
5536d210 AD |
1195 | struct igb_ring *ring; |
1196 | int ring_count, size; | |
047e0030 | 1197 | |
5536d210 AD |
1198 | /* igb only supports 1 Tx and/or 1 Rx queue per vector */ |
1199 | if (txr_count > 1 || rxr_count > 1) | |
1200 | return -ENOMEM; | |
1201 | ||
1202 | ring_count = txr_count + rxr_count; | |
1203 | size = sizeof(struct igb_q_vector) + | |
1204 | (sizeof(struct igb_ring) * ring_count); | |
1205 | ||
1206 | /* allocate q_vector and rings */ | |
02ef6e1d | 1207 | q_vector = adapter->q_vector[v_idx]; |
72ddef05 | 1208 | if (!q_vector) { |
02ef6e1d | 1209 | q_vector = kzalloc(size, GFP_KERNEL); |
72ddef05 SS |
1210 | } else if (size > ksize(q_vector)) { |
1211 | kfree_rcu(q_vector, rcu); | |
1212 | q_vector = kzalloc(size, GFP_KERNEL); | |
1213 | } else { | |
c0a06ee1 | 1214 | memset(q_vector, 0, size); |
72ddef05 | 1215 | } |
5536d210 AD |
1216 | if (!q_vector) |
1217 | return -ENOMEM; | |
1218 | ||
1219 | /* initialize NAPI */ | |
1220 | netif_napi_add(adapter->netdev, &q_vector->napi, | |
1221 | igb_poll, 64); | |
1222 | ||
1223 | /* tie q_vector and adapter together */ | |
1224 | adapter->q_vector[v_idx] = q_vector; | |
1225 | q_vector->adapter = adapter; | |
1226 | ||
1227 | /* initialize work limits */ | |
1228 | q_vector->tx.work_limit = adapter->tx_work_limit; | |
1229 | ||
1230 | /* initialize ITR configuration */ | |
1231 | q_vector->itr_register = adapter->hw.hw_addr + E1000_EITR(0); | |
1232 | q_vector->itr_val = IGB_START_ITR; | |
1233 | ||
1234 | /* initialize pointer to rings */ | |
1235 | ring = q_vector->ring; | |
1236 | ||
4e227667 AD |
1237 | /* intialize ITR */ |
1238 | if (rxr_count) { | |
1239 | /* rx or rx/tx vector */ | |
1240 | if (!adapter->rx_itr_setting || adapter->rx_itr_setting > 3) | |
1241 | q_vector->itr_val = adapter->rx_itr_setting; | |
1242 | } else { | |
1243 | /* tx only vector */ | |
1244 | if (!adapter->tx_itr_setting || adapter->tx_itr_setting > 3) | |
1245 | q_vector->itr_val = adapter->tx_itr_setting; | |
1246 | } | |
1247 | ||
5536d210 AD |
1248 | if (txr_count) { |
1249 | /* assign generic ring traits */ | |
1250 | ring->dev = &adapter->pdev->dev; | |
1251 | ring->netdev = adapter->netdev; | |
1252 | ||
1253 | /* configure backlink on ring */ | |
1254 | ring->q_vector = q_vector; | |
1255 | ||
1256 | /* update q_vector Tx values */ | |
1257 | igb_add_ring(ring, &q_vector->tx); | |
1258 | ||
1259 | /* For 82575, context index must be unique per ring. */ | |
1260 | if (adapter->hw.mac.type == e1000_82575) | |
1261 | set_bit(IGB_RING_FLAG_TX_CTX_IDX, &ring->flags); | |
1262 | ||
1263 | /* apply Tx specific ring traits */ | |
1264 | ring->count = adapter->tx_ring_count; | |
1265 | ring->queue_index = txr_idx; | |
1266 | ||
827da44c JS |
1267 | u64_stats_init(&ring->tx_syncp); |
1268 | u64_stats_init(&ring->tx_syncp2); | |
1269 | ||
5536d210 AD |
1270 | /* assign ring to adapter */ |
1271 | adapter->tx_ring[txr_idx] = ring; | |
1272 | ||
1273 | /* push pointer to next ring */ | |
1274 | ring++; | |
047e0030 | 1275 | } |
81c2fc22 | 1276 | |
5536d210 AD |
1277 | if (rxr_count) { |
1278 | /* assign generic ring traits */ | |
1279 | ring->dev = &adapter->pdev->dev; | |
1280 | ring->netdev = adapter->netdev; | |
047e0030 | 1281 | |
5536d210 AD |
1282 | /* configure backlink on ring */ |
1283 | ring->q_vector = q_vector; | |
047e0030 | 1284 | |
5536d210 AD |
1285 | /* update q_vector Rx values */ |
1286 | igb_add_ring(ring, &q_vector->rx); | |
047e0030 | 1287 | |
5536d210 AD |
1288 | /* set flag indicating ring supports SCTP checksum offload */ |
1289 | if (adapter->hw.mac.type >= e1000_82576) | |
1290 | set_bit(IGB_RING_FLAG_RX_SCTP_CSUM, &ring->flags); | |
047e0030 | 1291 | |
e52c0f96 | 1292 | /* On i350, i354, i210, and i211, loopback VLAN packets |
5536d210 | 1293 | * have the tag byte-swapped. |
b980ac18 | 1294 | */ |
5536d210 AD |
1295 | if (adapter->hw.mac.type >= e1000_i350) |
1296 | set_bit(IGB_RING_FLAG_RX_LB_VLAN_BSWAP, &ring->flags); | |
047e0030 | 1297 | |
5536d210 AD |
1298 | /* apply Rx specific ring traits */ |
1299 | ring->count = adapter->rx_ring_count; | |
1300 | ring->queue_index = rxr_idx; | |
1301 | ||
827da44c JS |
1302 | u64_stats_init(&ring->rx_syncp); |
1303 | ||
5536d210 AD |
1304 | /* assign ring to adapter */ |
1305 | adapter->rx_ring[rxr_idx] = ring; | |
1306 | } | |
1307 | ||
1308 | return 0; | |
047e0030 AD |
1309 | } |
1310 | ||
5536d210 | 1311 | |
047e0030 | 1312 | /** |
b980ac18 JK |
1313 | * igb_alloc_q_vectors - Allocate memory for interrupt vectors |
1314 | * @adapter: board private structure to initialize | |
047e0030 | 1315 | * |
b980ac18 JK |
1316 | * We allocate one q_vector per queue interrupt. If allocation fails we |
1317 | * return -ENOMEM. | |
047e0030 | 1318 | **/ |
5536d210 | 1319 | static int igb_alloc_q_vectors(struct igb_adapter *adapter) |
047e0030 | 1320 | { |
5536d210 AD |
1321 | int q_vectors = adapter->num_q_vectors; |
1322 | int rxr_remaining = adapter->num_rx_queues; | |
1323 | int txr_remaining = adapter->num_tx_queues; | |
1324 | int rxr_idx = 0, txr_idx = 0, v_idx = 0; | |
1325 | int err; | |
047e0030 | 1326 | |
5536d210 AD |
1327 | if (q_vectors >= (rxr_remaining + txr_remaining)) { |
1328 | for (; rxr_remaining; v_idx++) { | |
1329 | err = igb_alloc_q_vector(adapter, q_vectors, v_idx, | |
1330 | 0, 0, 1, rxr_idx); | |
047e0030 | 1331 | |
5536d210 AD |
1332 | if (err) |
1333 | goto err_out; | |
1334 | ||
1335 | /* update counts and index */ | |
1336 | rxr_remaining--; | |
1337 | rxr_idx++; | |
047e0030 | 1338 | } |
047e0030 | 1339 | } |
5536d210 AD |
1340 | |
1341 | for (; v_idx < q_vectors; v_idx++) { | |
1342 | int rqpv = DIV_ROUND_UP(rxr_remaining, q_vectors - v_idx); | |
1343 | int tqpv = DIV_ROUND_UP(txr_remaining, q_vectors - v_idx); | |
9005df38 | 1344 | |
5536d210 AD |
1345 | err = igb_alloc_q_vector(adapter, q_vectors, v_idx, |
1346 | tqpv, txr_idx, rqpv, rxr_idx); | |
1347 | ||
1348 | if (err) | |
1349 | goto err_out; | |
1350 | ||
1351 | /* update counts and index */ | |
1352 | rxr_remaining -= rqpv; | |
1353 | txr_remaining -= tqpv; | |
1354 | rxr_idx++; | |
1355 | txr_idx++; | |
1356 | } | |
1357 | ||
047e0030 | 1358 | return 0; |
5536d210 AD |
1359 | |
1360 | err_out: | |
1361 | adapter->num_tx_queues = 0; | |
1362 | adapter->num_rx_queues = 0; | |
1363 | adapter->num_q_vectors = 0; | |
1364 | ||
1365 | while (v_idx--) | |
1366 | igb_free_q_vector(adapter, v_idx); | |
1367 | ||
1368 | return -ENOMEM; | |
047e0030 AD |
1369 | } |
1370 | ||
1371 | /** | |
b980ac18 JK |
1372 | * igb_init_interrupt_scheme - initialize interrupts, allocate queues/vectors |
1373 | * @adapter: board private structure to initialize | |
1374 | * @msix: boolean value of MSIX capability | |
047e0030 | 1375 | * |
b980ac18 | 1376 | * This function initializes the interrupts and allocates all of the queues. |
047e0030 | 1377 | **/ |
53c7d064 | 1378 | static int igb_init_interrupt_scheme(struct igb_adapter *adapter, bool msix) |
047e0030 AD |
1379 | { |
1380 | struct pci_dev *pdev = adapter->pdev; | |
1381 | int err; | |
1382 | ||
53c7d064 | 1383 | igb_set_interrupt_capability(adapter, msix); |
047e0030 AD |
1384 | |
1385 | err = igb_alloc_q_vectors(adapter); | |
1386 | if (err) { | |
1387 | dev_err(&pdev->dev, "Unable to allocate memory for vectors\n"); | |
1388 | goto err_alloc_q_vectors; | |
1389 | } | |
1390 | ||
5536d210 | 1391 | igb_cache_ring_register(adapter); |
047e0030 AD |
1392 | |
1393 | return 0; | |
5536d210 | 1394 | |
047e0030 AD |
1395 | err_alloc_q_vectors: |
1396 | igb_reset_interrupt_capability(adapter); | |
1397 | return err; | |
1398 | } | |
1399 | ||
9d5c8243 | 1400 | /** |
b980ac18 JK |
1401 | * igb_request_irq - initialize interrupts |
1402 | * @adapter: board private structure to initialize | |
9d5c8243 | 1403 | * |
b980ac18 JK |
1404 | * Attempts to configure interrupts using the best available |
1405 | * capabilities of the hardware and kernel. | |
9d5c8243 AK |
1406 | **/ |
1407 | static int igb_request_irq(struct igb_adapter *adapter) | |
1408 | { | |
1409 | struct net_device *netdev = adapter->netdev; | |
047e0030 | 1410 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
1411 | int err = 0; |
1412 | ||
cd14ef54 | 1413 | if (adapter->flags & IGB_FLAG_HAS_MSIX) { |
9d5c8243 | 1414 | err = igb_request_msix(adapter); |
844290e5 | 1415 | if (!err) |
9d5c8243 | 1416 | goto request_done; |
9d5c8243 | 1417 | /* fall back to MSI */ |
5536d210 AD |
1418 | igb_free_all_tx_resources(adapter); |
1419 | igb_free_all_rx_resources(adapter); | |
53c7d064 | 1420 | |
047e0030 | 1421 | igb_clear_interrupt_scheme(adapter); |
53c7d064 SA |
1422 | err = igb_init_interrupt_scheme(adapter, false); |
1423 | if (err) | |
047e0030 | 1424 | goto request_done; |
53c7d064 | 1425 | |
047e0030 AD |
1426 | igb_setup_all_tx_resources(adapter); |
1427 | igb_setup_all_rx_resources(adapter); | |
53c7d064 | 1428 | igb_configure(adapter); |
9d5c8243 | 1429 | } |
844290e5 | 1430 | |
c74d588e AD |
1431 | igb_assign_vector(adapter->q_vector[0], 0); |
1432 | ||
7dfc16fa | 1433 | if (adapter->flags & IGB_FLAG_HAS_MSI) { |
c74d588e | 1434 | err = request_irq(pdev->irq, igb_intr_msi, 0, |
047e0030 | 1435 | netdev->name, adapter); |
9d5c8243 AK |
1436 | if (!err) |
1437 | goto request_done; | |
047e0030 | 1438 | |
9d5c8243 AK |
1439 | /* fall back to legacy interrupts */ |
1440 | igb_reset_interrupt_capability(adapter); | |
7dfc16fa | 1441 | adapter->flags &= ~IGB_FLAG_HAS_MSI; |
9d5c8243 AK |
1442 | } |
1443 | ||
c74d588e | 1444 | err = request_irq(pdev->irq, igb_intr, IRQF_SHARED, |
047e0030 | 1445 | netdev->name, adapter); |
9d5c8243 | 1446 | |
6cb5e577 | 1447 | if (err) |
c74d588e | 1448 | dev_err(&pdev->dev, "Error %d getting interrupt\n", |
9d5c8243 | 1449 | err); |
9d5c8243 AK |
1450 | |
1451 | request_done: | |
1452 | return err; | |
1453 | } | |
1454 | ||
1455 | static void igb_free_irq(struct igb_adapter *adapter) | |
1456 | { | |
cd14ef54 | 1457 | if (adapter->flags & IGB_FLAG_HAS_MSIX) { |
9d5c8243 AK |
1458 | int vector = 0, i; |
1459 | ||
047e0030 | 1460 | free_irq(adapter->msix_entries[vector++].vector, adapter); |
9d5c8243 | 1461 | |
0d1ae7f4 | 1462 | for (i = 0; i < adapter->num_q_vectors; i++) |
047e0030 | 1463 | free_irq(adapter->msix_entries[vector++].vector, |
0d1ae7f4 | 1464 | adapter->q_vector[i]); |
047e0030 AD |
1465 | } else { |
1466 | free_irq(adapter->pdev->irq, adapter); | |
9d5c8243 | 1467 | } |
9d5c8243 AK |
1468 | } |
1469 | ||
1470 | /** | |
b980ac18 JK |
1471 | * igb_irq_disable - Mask off interrupt generation on the NIC |
1472 | * @adapter: board private structure | |
9d5c8243 AK |
1473 | **/ |
1474 | static void igb_irq_disable(struct igb_adapter *adapter) | |
1475 | { | |
1476 | struct e1000_hw *hw = &adapter->hw; | |
1477 | ||
b980ac18 | 1478 | /* we need to be careful when disabling interrupts. The VFs are also |
25568a53 AD |
1479 | * mapped into these registers and so clearing the bits can cause |
1480 | * issues on the VF drivers so we only need to clear what we set | |
1481 | */ | |
cd14ef54 | 1482 | if (adapter->flags & IGB_FLAG_HAS_MSIX) { |
2dfd1212 | 1483 | u32 regval = rd32(E1000_EIAM); |
9005df38 | 1484 | |
2dfd1212 AD |
1485 | wr32(E1000_EIAM, regval & ~adapter->eims_enable_mask); |
1486 | wr32(E1000_EIMC, adapter->eims_enable_mask); | |
1487 | regval = rd32(E1000_EIAC); | |
1488 | wr32(E1000_EIAC, regval & ~adapter->eims_enable_mask); | |
9d5c8243 | 1489 | } |
844290e5 PW |
1490 | |
1491 | wr32(E1000_IAM, 0); | |
9d5c8243 AK |
1492 | wr32(E1000_IMC, ~0); |
1493 | wrfl(); | |
cd14ef54 | 1494 | if (adapter->flags & IGB_FLAG_HAS_MSIX) { |
81a61859 | 1495 | int i; |
9005df38 | 1496 | |
81a61859 ET |
1497 | for (i = 0; i < adapter->num_q_vectors; i++) |
1498 | synchronize_irq(adapter->msix_entries[i].vector); | |
1499 | } else { | |
1500 | synchronize_irq(adapter->pdev->irq); | |
1501 | } | |
9d5c8243 AK |
1502 | } |
1503 | ||
1504 | /** | |
b980ac18 JK |
1505 | * igb_irq_enable - Enable default interrupt generation settings |
1506 | * @adapter: board private structure | |
9d5c8243 AK |
1507 | **/ |
1508 | static void igb_irq_enable(struct igb_adapter *adapter) | |
1509 | { | |
1510 | struct e1000_hw *hw = &adapter->hw; | |
1511 | ||
cd14ef54 | 1512 | if (adapter->flags & IGB_FLAG_HAS_MSIX) { |
06218a8d | 1513 | u32 ims = E1000_IMS_LSC | E1000_IMS_DOUTSYNC | E1000_IMS_DRSTA; |
2dfd1212 | 1514 | u32 regval = rd32(E1000_EIAC); |
9005df38 | 1515 | |
2dfd1212 AD |
1516 | wr32(E1000_EIAC, regval | adapter->eims_enable_mask); |
1517 | regval = rd32(E1000_EIAM); | |
1518 | wr32(E1000_EIAM, regval | adapter->eims_enable_mask); | |
844290e5 | 1519 | wr32(E1000_EIMS, adapter->eims_enable_mask); |
25568a53 | 1520 | if (adapter->vfs_allocated_count) { |
4ae196df | 1521 | wr32(E1000_MBVFIMR, 0xFF); |
25568a53 AD |
1522 | ims |= E1000_IMS_VMMB; |
1523 | } | |
1524 | wr32(E1000_IMS, ims); | |
844290e5 | 1525 | } else { |
55cac248 AD |
1526 | wr32(E1000_IMS, IMS_ENABLE_MASK | |
1527 | E1000_IMS_DRSTA); | |
1528 | wr32(E1000_IAM, IMS_ENABLE_MASK | | |
1529 | E1000_IMS_DRSTA); | |
844290e5 | 1530 | } |
9d5c8243 AK |
1531 | } |
1532 | ||
1533 | static void igb_update_mng_vlan(struct igb_adapter *adapter) | |
1534 | { | |
51466239 | 1535 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 AK |
1536 | u16 vid = adapter->hw.mng_cookie.vlan_id; |
1537 | u16 old_vid = adapter->mng_vlan_id; | |
51466239 AD |
1538 | |
1539 | if (hw->mng_cookie.status & E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { | |
1540 | /* add VID to filter table */ | |
1541 | igb_vfta_set(hw, vid, true); | |
1542 | adapter->mng_vlan_id = vid; | |
1543 | } else { | |
1544 | adapter->mng_vlan_id = IGB_MNG_VLAN_NONE; | |
1545 | } | |
1546 | ||
1547 | if ((old_vid != (u16)IGB_MNG_VLAN_NONE) && | |
1548 | (vid != old_vid) && | |
b2cb09b1 | 1549 | !test_bit(old_vid, adapter->active_vlans)) { |
51466239 AD |
1550 | /* remove VID from filter table */ |
1551 | igb_vfta_set(hw, old_vid, false); | |
9d5c8243 AK |
1552 | } |
1553 | } | |
1554 | ||
1555 | /** | |
b980ac18 JK |
1556 | * igb_release_hw_control - release control of the h/w to f/w |
1557 | * @adapter: address of board private structure | |
9d5c8243 | 1558 | * |
b980ac18 JK |
1559 | * igb_release_hw_control resets CTRL_EXT:DRV_LOAD bit. |
1560 | * For ASF and Pass Through versions of f/w this means that the | |
1561 | * driver is no longer loaded. | |
9d5c8243 AK |
1562 | **/ |
1563 | static void igb_release_hw_control(struct igb_adapter *adapter) | |
1564 | { | |
1565 | struct e1000_hw *hw = &adapter->hw; | |
1566 | u32 ctrl_ext; | |
1567 | ||
1568 | /* Let firmware take over control of h/w */ | |
1569 | ctrl_ext = rd32(E1000_CTRL_EXT); | |
1570 | wr32(E1000_CTRL_EXT, | |
1571 | ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); | |
1572 | } | |
1573 | ||
9d5c8243 | 1574 | /** |
b980ac18 JK |
1575 | * igb_get_hw_control - get control of the h/w from f/w |
1576 | * @adapter: address of board private structure | |
9d5c8243 | 1577 | * |
b980ac18 JK |
1578 | * igb_get_hw_control sets CTRL_EXT:DRV_LOAD bit. |
1579 | * For ASF and Pass Through versions of f/w this means that | |
1580 | * the driver is loaded. | |
9d5c8243 AK |
1581 | **/ |
1582 | static void igb_get_hw_control(struct igb_adapter *adapter) | |
1583 | { | |
1584 | struct e1000_hw *hw = &adapter->hw; | |
1585 | u32 ctrl_ext; | |
1586 | ||
1587 | /* Let firmware know the driver has taken over */ | |
1588 | ctrl_ext = rd32(E1000_CTRL_EXT); | |
1589 | wr32(E1000_CTRL_EXT, | |
1590 | ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); | |
1591 | } | |
1592 | ||
9d5c8243 | 1593 | /** |
b980ac18 JK |
1594 | * igb_configure - configure the hardware for RX and TX |
1595 | * @adapter: private board structure | |
9d5c8243 AK |
1596 | **/ |
1597 | static void igb_configure(struct igb_adapter *adapter) | |
1598 | { | |
1599 | struct net_device *netdev = adapter->netdev; | |
1600 | int i; | |
1601 | ||
1602 | igb_get_hw_control(adapter); | |
ff41f8dc | 1603 | igb_set_rx_mode(netdev); |
9d5c8243 AK |
1604 | |
1605 | igb_restore_vlan(adapter); | |
9d5c8243 | 1606 | |
85b430b4 | 1607 | igb_setup_tctl(adapter); |
06cf2666 | 1608 | igb_setup_mrqc(adapter); |
9d5c8243 | 1609 | igb_setup_rctl(adapter); |
85b430b4 AD |
1610 | |
1611 | igb_configure_tx(adapter); | |
9d5c8243 | 1612 | igb_configure_rx(adapter); |
662d7205 AD |
1613 | |
1614 | igb_rx_fifo_flush_82575(&adapter->hw); | |
1615 | ||
c493ea45 | 1616 | /* call igb_desc_unused which always leaves |
9d5c8243 | 1617 | * at least 1 descriptor unused to make sure |
b980ac18 JK |
1618 | * next_to_use != next_to_clean |
1619 | */ | |
9d5c8243 | 1620 | for (i = 0; i < adapter->num_rx_queues; i++) { |
3025a446 | 1621 | struct igb_ring *ring = adapter->rx_ring[i]; |
cd392f5c | 1622 | igb_alloc_rx_buffers(ring, igb_desc_unused(ring)); |
9d5c8243 | 1623 | } |
9d5c8243 AK |
1624 | } |
1625 | ||
88a268c1 | 1626 | /** |
b980ac18 JK |
1627 | * igb_power_up_link - Power up the phy/serdes link |
1628 | * @adapter: address of board private structure | |
88a268c1 NN |
1629 | **/ |
1630 | void igb_power_up_link(struct igb_adapter *adapter) | |
1631 | { | |
76886596 AA |
1632 | igb_reset_phy(&adapter->hw); |
1633 | ||
88a268c1 NN |
1634 | if (adapter->hw.phy.media_type == e1000_media_type_copper) |
1635 | igb_power_up_phy_copper(&adapter->hw); | |
1636 | else | |
1637 | igb_power_up_serdes_link_82575(&adapter->hw); | |
aec653c4 TF |
1638 | |
1639 | igb_setup_link(&adapter->hw); | |
88a268c1 NN |
1640 | } |
1641 | ||
1642 | /** | |
b980ac18 JK |
1643 | * igb_power_down_link - Power down the phy/serdes link |
1644 | * @adapter: address of board private structure | |
88a268c1 NN |
1645 | */ |
1646 | static void igb_power_down_link(struct igb_adapter *adapter) | |
1647 | { | |
1648 | if (adapter->hw.phy.media_type == e1000_media_type_copper) | |
1649 | igb_power_down_phy_copper_82575(&adapter->hw); | |
1650 | else | |
1651 | igb_shutdown_serdes_link_82575(&adapter->hw); | |
1652 | } | |
9d5c8243 | 1653 | |
56cec249 CW |
1654 | /** |
1655 | * Detect and switch function for Media Auto Sense | |
1656 | * @adapter: address of the board private structure | |
1657 | **/ | |
1658 | static void igb_check_swap_media(struct igb_adapter *adapter) | |
1659 | { | |
1660 | struct e1000_hw *hw = &adapter->hw; | |
1661 | u32 ctrl_ext, connsw; | |
1662 | bool swap_now = false; | |
1663 | ||
1664 | ctrl_ext = rd32(E1000_CTRL_EXT); | |
1665 | connsw = rd32(E1000_CONNSW); | |
1666 | ||
1667 | /* need to live swap if current media is copper and we have fiber/serdes | |
1668 | * to go to. | |
1669 | */ | |
1670 | ||
1671 | if ((hw->phy.media_type == e1000_media_type_copper) && | |
1672 | (!(connsw & E1000_CONNSW_AUTOSENSE_EN))) { | |
1673 | swap_now = true; | |
1674 | } else if (!(connsw & E1000_CONNSW_SERDESD)) { | |
1675 | /* copper signal takes time to appear */ | |
1676 | if (adapter->copper_tries < 4) { | |
1677 | adapter->copper_tries++; | |
1678 | connsw |= E1000_CONNSW_AUTOSENSE_CONF; | |
1679 | wr32(E1000_CONNSW, connsw); | |
1680 | return; | |
1681 | } else { | |
1682 | adapter->copper_tries = 0; | |
1683 | if ((connsw & E1000_CONNSW_PHYSD) && | |
1684 | (!(connsw & E1000_CONNSW_PHY_PDN))) { | |
1685 | swap_now = true; | |
1686 | connsw &= ~E1000_CONNSW_AUTOSENSE_CONF; | |
1687 | wr32(E1000_CONNSW, connsw); | |
1688 | } | |
1689 | } | |
1690 | } | |
1691 | ||
1692 | if (!swap_now) | |
1693 | return; | |
1694 | ||
1695 | switch (hw->phy.media_type) { | |
1696 | case e1000_media_type_copper: | |
1697 | netdev_info(adapter->netdev, | |
1698 | "MAS: changing media to fiber/serdes\n"); | |
1699 | ctrl_ext |= | |
1700 | E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES; | |
1701 | adapter->flags |= IGB_FLAG_MEDIA_RESET; | |
1702 | adapter->copper_tries = 0; | |
1703 | break; | |
1704 | case e1000_media_type_internal_serdes: | |
1705 | case e1000_media_type_fiber: | |
1706 | netdev_info(adapter->netdev, | |
1707 | "MAS: changing media to copper\n"); | |
1708 | ctrl_ext &= | |
1709 | ~E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES; | |
1710 | adapter->flags |= IGB_FLAG_MEDIA_RESET; | |
1711 | break; | |
1712 | default: | |
1713 | /* shouldn't get here during regular operation */ | |
1714 | netdev_err(adapter->netdev, | |
1715 | "AMS: Invalid media type found, returning\n"); | |
1716 | break; | |
1717 | } | |
1718 | wr32(E1000_CTRL_EXT, ctrl_ext); | |
1719 | } | |
1720 | ||
9d5c8243 | 1721 | /** |
b980ac18 JK |
1722 | * igb_up - Open the interface and prepare it to handle traffic |
1723 | * @adapter: board private structure | |
9d5c8243 | 1724 | **/ |
9d5c8243 AK |
1725 | int igb_up(struct igb_adapter *adapter) |
1726 | { | |
1727 | struct e1000_hw *hw = &adapter->hw; | |
1728 | int i; | |
1729 | ||
1730 | /* hardware has been reset, we need to reload some things */ | |
1731 | igb_configure(adapter); | |
1732 | ||
1733 | clear_bit(__IGB_DOWN, &adapter->state); | |
1734 | ||
0d1ae7f4 AD |
1735 | for (i = 0; i < adapter->num_q_vectors; i++) |
1736 | napi_enable(&(adapter->q_vector[i]->napi)); | |
1737 | ||
cd14ef54 | 1738 | if (adapter->flags & IGB_FLAG_HAS_MSIX) |
9d5c8243 | 1739 | igb_configure_msix(adapter); |
feeb2721 AD |
1740 | else |
1741 | igb_assign_vector(adapter->q_vector[0], 0); | |
9d5c8243 AK |
1742 | |
1743 | /* Clear any pending interrupts. */ | |
1744 | rd32(E1000_ICR); | |
1745 | igb_irq_enable(adapter); | |
1746 | ||
d4960307 AD |
1747 | /* notify VFs that reset has been completed */ |
1748 | if (adapter->vfs_allocated_count) { | |
1749 | u32 reg_data = rd32(E1000_CTRL_EXT); | |
9005df38 | 1750 | |
d4960307 AD |
1751 | reg_data |= E1000_CTRL_EXT_PFRSTD; |
1752 | wr32(E1000_CTRL_EXT, reg_data); | |
1753 | } | |
1754 | ||
4cb9be7a JB |
1755 | netif_tx_start_all_queues(adapter->netdev); |
1756 | ||
25568a53 AD |
1757 | /* start the watchdog. */ |
1758 | hw->mac.get_link_status = 1; | |
1759 | schedule_work(&adapter->watchdog_task); | |
1760 | ||
f4c01e96 CW |
1761 | if ((adapter->flags & IGB_FLAG_EEE) && |
1762 | (!hw->dev_spec._82575.eee_disable)) | |
1763 | adapter->eee_advert = MDIO_EEE_100TX | MDIO_EEE_1000T; | |
1764 | ||
9d5c8243 AK |
1765 | return 0; |
1766 | } | |
1767 | ||
1768 | void igb_down(struct igb_adapter *adapter) | |
1769 | { | |
9d5c8243 | 1770 | struct net_device *netdev = adapter->netdev; |
330a6d6a | 1771 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 AK |
1772 | u32 tctl, rctl; |
1773 | int i; | |
1774 | ||
1775 | /* signal that we're down so the interrupt handler does not | |
b980ac18 JK |
1776 | * reschedule our watchdog timer |
1777 | */ | |
9d5c8243 AK |
1778 | set_bit(__IGB_DOWN, &adapter->state); |
1779 | ||
1780 | /* disable receives in the hardware */ | |
1781 | rctl = rd32(E1000_RCTL); | |
1782 | wr32(E1000_RCTL, rctl & ~E1000_RCTL_EN); | |
1783 | /* flush and sleep below */ | |
1784 | ||
f28ea083 | 1785 | netif_carrier_off(netdev); |
fd2ea0a7 | 1786 | netif_tx_stop_all_queues(netdev); |
9d5c8243 AK |
1787 | |
1788 | /* disable transmits in the hardware */ | |
1789 | tctl = rd32(E1000_TCTL); | |
1790 | tctl &= ~E1000_TCTL_EN; | |
1791 | wr32(E1000_TCTL, tctl); | |
1792 | /* flush both disables and wait for them to finish */ | |
1793 | wrfl(); | |
0d451e79 | 1794 | usleep_range(10000, 11000); |
9d5c8243 | 1795 | |
41f149a2 CW |
1796 | igb_irq_disable(adapter); |
1797 | ||
aa9b8cc4 AA |
1798 | adapter->flags &= ~IGB_FLAG_NEED_LINK_UPDATE; |
1799 | ||
41f149a2 | 1800 | for (i = 0; i < adapter->num_q_vectors; i++) { |
17a402a0 CW |
1801 | if (adapter->q_vector[i]) { |
1802 | napi_synchronize(&adapter->q_vector[i]->napi); | |
1803 | napi_disable(&adapter->q_vector[i]->napi); | |
1804 | } | |
41f149a2 | 1805 | } |
9d5c8243 | 1806 | |
9d5c8243 AK |
1807 | del_timer_sync(&adapter->watchdog_timer); |
1808 | del_timer_sync(&adapter->phy_info_timer); | |
1809 | ||
04fe6358 | 1810 | /* record the stats before reset*/ |
12dcd86b ED |
1811 | spin_lock(&adapter->stats64_lock); |
1812 | igb_update_stats(adapter, &adapter->stats64); | |
1813 | spin_unlock(&adapter->stats64_lock); | |
04fe6358 | 1814 | |
9d5c8243 AK |
1815 | adapter->link_speed = 0; |
1816 | adapter->link_duplex = 0; | |
1817 | ||
3023682e JK |
1818 | if (!pci_channel_offline(adapter->pdev)) |
1819 | igb_reset(adapter); | |
9d5c8243 AK |
1820 | igb_clean_all_tx_rings(adapter); |
1821 | igb_clean_all_rx_rings(adapter); | |
7e0e99ef AD |
1822 | #ifdef CONFIG_IGB_DCA |
1823 | ||
1824 | /* since we reset the hardware DCA settings were cleared */ | |
1825 | igb_setup_dca(adapter); | |
1826 | #endif | |
9d5c8243 AK |
1827 | } |
1828 | ||
1829 | void igb_reinit_locked(struct igb_adapter *adapter) | |
1830 | { | |
1831 | WARN_ON(in_interrupt()); | |
1832 | while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) | |
0d451e79 | 1833 | usleep_range(1000, 2000); |
9d5c8243 AK |
1834 | igb_down(adapter); |
1835 | igb_up(adapter); | |
1836 | clear_bit(__IGB_RESETTING, &adapter->state); | |
1837 | } | |
1838 | ||
56cec249 CW |
1839 | /** igb_enable_mas - Media Autosense re-enable after swap |
1840 | * | |
1841 | * @adapter: adapter struct | |
1842 | **/ | |
8cfb879d | 1843 | static void igb_enable_mas(struct igb_adapter *adapter) |
56cec249 CW |
1844 | { |
1845 | struct e1000_hw *hw = &adapter->hw; | |
8cfb879d | 1846 | u32 connsw = rd32(E1000_CONNSW); |
56cec249 CW |
1847 | |
1848 | /* configure for SerDes media detect */ | |
8cfb879d TF |
1849 | if ((hw->phy.media_type == e1000_media_type_copper) && |
1850 | (!(connsw & E1000_CONNSW_SERDESD))) { | |
56cec249 CW |
1851 | connsw |= E1000_CONNSW_ENRGSRC; |
1852 | connsw |= E1000_CONNSW_AUTOSENSE_EN; | |
1853 | wr32(E1000_CONNSW, connsw); | |
1854 | wrfl(); | |
56cec249 | 1855 | } |
56cec249 CW |
1856 | } |
1857 | ||
9d5c8243 AK |
1858 | void igb_reset(struct igb_adapter *adapter) |
1859 | { | |
090b1795 | 1860 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 | 1861 | struct e1000_hw *hw = &adapter->hw; |
2d064c06 AD |
1862 | struct e1000_mac_info *mac = &hw->mac; |
1863 | struct e1000_fc_info *fc = &hw->fc; | |
d48507fe | 1864 | u32 pba = 0, tx_space, min_tx_space, min_rx_space, hwm; |
9d5c8243 AK |
1865 | |
1866 | /* Repartition Pba for greater than 9k mtu | |
1867 | * To take effect CTRL.RST is required. | |
1868 | */ | |
fa4dfae0 | 1869 | switch (mac->type) { |
d2ba2ed8 | 1870 | case e1000_i350: |
ceb5f13b | 1871 | case e1000_i354: |
55cac248 AD |
1872 | case e1000_82580: |
1873 | pba = rd32(E1000_RXPBS); | |
1874 | pba = igb_rxpbs_adjust_82580(pba); | |
1875 | break; | |
fa4dfae0 | 1876 | case e1000_82576: |
d249be54 AD |
1877 | pba = rd32(E1000_RXPBS); |
1878 | pba &= E1000_RXPBS_SIZE_MASK_82576; | |
fa4dfae0 AD |
1879 | break; |
1880 | case e1000_82575: | |
f96a8a0b CW |
1881 | case e1000_i210: |
1882 | case e1000_i211: | |
fa4dfae0 AD |
1883 | default: |
1884 | pba = E1000_PBA_34K; | |
1885 | break; | |
2d064c06 | 1886 | } |
9d5c8243 | 1887 | |
2d064c06 AD |
1888 | if ((adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) && |
1889 | (mac->type < e1000_82576)) { | |
9d5c8243 AK |
1890 | /* adjust PBA for jumbo frames */ |
1891 | wr32(E1000_PBA, pba); | |
1892 | ||
1893 | /* To maintain wire speed transmits, the Tx FIFO should be | |
1894 | * large enough to accommodate two full transmit packets, | |
1895 | * rounded up to the next 1KB and expressed in KB. Likewise, | |
1896 | * the Rx FIFO should be large enough to accommodate at least | |
1897 | * one full receive packet and is similarly rounded up and | |
b980ac18 JK |
1898 | * expressed in KB. |
1899 | */ | |
9d5c8243 AK |
1900 | pba = rd32(E1000_PBA); |
1901 | /* upper 16 bits has Tx packet buffer allocation size in KB */ | |
1902 | tx_space = pba >> 16; | |
1903 | /* lower 16 bits has Rx packet buffer allocation size in KB */ | |
1904 | pba &= 0xffff; | |
b980ac18 JK |
1905 | /* the Tx fifo also stores 16 bytes of information about the Tx |
1906 | * but don't include ethernet FCS because hardware appends it | |
1907 | */ | |
9d5c8243 | 1908 | min_tx_space = (adapter->max_frame_size + |
85e8d004 | 1909 | sizeof(union e1000_adv_tx_desc) - |
9d5c8243 AK |
1910 | ETH_FCS_LEN) * 2; |
1911 | min_tx_space = ALIGN(min_tx_space, 1024); | |
1912 | min_tx_space >>= 10; | |
1913 | /* software strips receive CRC, so leave room for it */ | |
1914 | min_rx_space = adapter->max_frame_size; | |
1915 | min_rx_space = ALIGN(min_rx_space, 1024); | |
1916 | min_rx_space >>= 10; | |
1917 | ||
1918 | /* If current Tx allocation is less than the min Tx FIFO size, | |
1919 | * and the min Tx FIFO size is less than the current Rx FIFO | |
b980ac18 JK |
1920 | * allocation, take space away from current Rx allocation |
1921 | */ | |
9d5c8243 AK |
1922 | if (tx_space < min_tx_space && |
1923 | ((min_tx_space - tx_space) < pba)) { | |
1924 | pba = pba - (min_tx_space - tx_space); | |
1925 | ||
b980ac18 JK |
1926 | /* if short on Rx space, Rx wins and must trump Tx |
1927 | * adjustment | |
1928 | */ | |
9d5c8243 AK |
1929 | if (pba < min_rx_space) |
1930 | pba = min_rx_space; | |
1931 | } | |
2d064c06 | 1932 | wr32(E1000_PBA, pba); |
9d5c8243 | 1933 | } |
9d5c8243 AK |
1934 | |
1935 | /* flow control settings */ | |
1936 | /* The high water mark must be low enough to fit one full frame | |
1937 | * (or the size used for early receive) above it in the Rx FIFO. | |
1938 | * Set it to the lower of: | |
1939 | * - 90% of the Rx FIFO size, or | |
b980ac18 JK |
1940 | * - the full Rx FIFO size minus one full frame |
1941 | */ | |
9d5c8243 | 1942 | hwm = min(((pba << 10) * 9 / 10), |
2d064c06 | 1943 | ((pba << 10) - 2 * adapter->max_frame_size)); |
9d5c8243 | 1944 | |
d48507fe | 1945 | fc->high_water = hwm & 0xFFFFFFF0; /* 16-byte granularity */ |
d405ea3e | 1946 | fc->low_water = fc->high_water - 16; |
9d5c8243 AK |
1947 | fc->pause_time = 0xFFFF; |
1948 | fc->send_xon = 1; | |
0cce119a | 1949 | fc->current_mode = fc->requested_mode; |
9d5c8243 | 1950 | |
4ae196df AD |
1951 | /* disable receive for all VFs and wait one second */ |
1952 | if (adapter->vfs_allocated_count) { | |
1953 | int i; | |
9005df38 | 1954 | |
4ae196df | 1955 | for (i = 0 ; i < adapter->vfs_allocated_count; i++) |
8fa7e0f7 | 1956 | adapter->vf_data[i].flags &= IGB_VF_FLAG_PF_SET_MAC; |
4ae196df AD |
1957 | |
1958 | /* ping all the active vfs to let them know we are going down */ | |
f2ca0dbe | 1959 | igb_ping_all_vfs(adapter); |
4ae196df AD |
1960 | |
1961 | /* disable transmits and receives */ | |
1962 | wr32(E1000_VFRE, 0); | |
1963 | wr32(E1000_VFTE, 0); | |
1964 | } | |
1965 | ||
9d5c8243 | 1966 | /* Allow time for pending master requests to run */ |
330a6d6a | 1967 | hw->mac.ops.reset_hw(hw); |
9d5c8243 AK |
1968 | wr32(E1000_WUC, 0); |
1969 | ||
56cec249 CW |
1970 | if (adapter->flags & IGB_FLAG_MEDIA_RESET) { |
1971 | /* need to resetup here after media swap */ | |
1972 | adapter->ei.get_invariants(hw); | |
1973 | adapter->flags &= ~IGB_FLAG_MEDIA_RESET; | |
1974 | } | |
8cfb879d TF |
1975 | if ((mac->type == e1000_82575) && |
1976 | (adapter->flags & IGB_FLAG_MAS_ENABLE)) { | |
1977 | igb_enable_mas(adapter); | |
56cec249 | 1978 | } |
330a6d6a | 1979 | if (hw->mac.ops.init_hw(hw)) |
090b1795 | 1980 | dev_err(&pdev->dev, "Hardware Error\n"); |
831ec0b4 | 1981 | |
b980ac18 | 1982 | /* Flow control settings reset on hardware reset, so guarantee flow |
a27416bb MV |
1983 | * control is off when forcing speed. |
1984 | */ | |
1985 | if (!hw->mac.autoneg) | |
1986 | igb_force_mac_fc(hw); | |
1987 | ||
b6e0c419 | 1988 | igb_init_dmac(adapter, pba); |
e428893b CW |
1989 | #ifdef CONFIG_IGB_HWMON |
1990 | /* Re-initialize the thermal sensor on i350 devices. */ | |
1991 | if (!test_bit(__IGB_DOWN, &adapter->state)) { | |
1992 | if (mac->type == e1000_i350 && hw->bus.func == 0) { | |
1993 | /* If present, re-initialize the external thermal sensor | |
1994 | * interface. | |
1995 | */ | |
1996 | if (adapter->ets) | |
1997 | mac->ops.init_thermal_sensor_thresh(hw); | |
1998 | } | |
1999 | } | |
2000 | #endif | |
b936136d | 2001 | /* Re-establish EEE setting */ |
f4c01e96 CW |
2002 | if (hw->phy.media_type == e1000_media_type_copper) { |
2003 | switch (mac->type) { | |
2004 | case e1000_i350: | |
2005 | case e1000_i210: | |
2006 | case e1000_i211: | |
c4c112f1 | 2007 | igb_set_eee_i350(hw, true, true); |
f4c01e96 CW |
2008 | break; |
2009 | case e1000_i354: | |
c4c112f1 | 2010 | igb_set_eee_i354(hw, true, true); |
f4c01e96 CW |
2011 | break; |
2012 | default: | |
2013 | break; | |
2014 | } | |
2015 | } | |
88a268c1 NN |
2016 | if (!netif_running(adapter->netdev)) |
2017 | igb_power_down_link(adapter); | |
2018 | ||
9d5c8243 AK |
2019 | igb_update_mng_vlan(adapter); |
2020 | ||
2021 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ | |
2022 | wr32(E1000_VET, ETHERNET_IEEE_VLAN_TYPE); | |
2023 | ||
1f6e8178 MV |
2024 | /* Re-enable PTP, where applicable. */ |
2025 | igb_ptp_reset(adapter); | |
1f6e8178 | 2026 | |
330a6d6a | 2027 | igb_get_phy_info(hw); |
9d5c8243 AK |
2028 | } |
2029 | ||
c8f44aff MM |
2030 | static netdev_features_t igb_fix_features(struct net_device *netdev, |
2031 | netdev_features_t features) | |
b2cb09b1 | 2032 | { |
b980ac18 JK |
2033 | /* Since there is no support for separate Rx/Tx vlan accel |
2034 | * enable/disable make sure Tx flag is always in same state as Rx. | |
b2cb09b1 | 2035 | */ |
f646968f PM |
2036 | if (features & NETIF_F_HW_VLAN_CTAG_RX) |
2037 | features |= NETIF_F_HW_VLAN_CTAG_TX; | |
b2cb09b1 | 2038 | else |
f646968f | 2039 | features &= ~NETIF_F_HW_VLAN_CTAG_TX; |
b2cb09b1 JP |
2040 | |
2041 | return features; | |
2042 | } | |
2043 | ||
c8f44aff MM |
2044 | static int igb_set_features(struct net_device *netdev, |
2045 | netdev_features_t features) | |
ac52caa3 | 2046 | { |
c8f44aff | 2047 | netdev_features_t changed = netdev->features ^ features; |
89eaefb6 | 2048 | struct igb_adapter *adapter = netdev_priv(netdev); |
ac52caa3 | 2049 | |
f646968f | 2050 | if (changed & NETIF_F_HW_VLAN_CTAG_RX) |
b2cb09b1 JP |
2051 | igb_vlan_mode(netdev, features); |
2052 | ||
89eaefb6 BG |
2053 | if (!(changed & NETIF_F_RXALL)) |
2054 | return 0; | |
2055 | ||
2056 | netdev->features = features; | |
2057 | ||
2058 | if (netif_running(netdev)) | |
2059 | igb_reinit_locked(adapter); | |
2060 | else | |
2061 | igb_reset(adapter); | |
2062 | ||
ac52caa3 MM |
2063 | return 0; |
2064 | } | |
2065 | ||
2e5c6922 | 2066 | static const struct net_device_ops igb_netdev_ops = { |
559e9c49 | 2067 | .ndo_open = igb_open, |
2e5c6922 | 2068 | .ndo_stop = igb_close, |
cd392f5c | 2069 | .ndo_start_xmit = igb_xmit_frame, |
12dcd86b | 2070 | .ndo_get_stats64 = igb_get_stats64, |
ff41f8dc | 2071 | .ndo_set_rx_mode = igb_set_rx_mode, |
2e5c6922 SH |
2072 | .ndo_set_mac_address = igb_set_mac, |
2073 | .ndo_change_mtu = igb_change_mtu, | |
2074 | .ndo_do_ioctl = igb_ioctl, | |
2075 | .ndo_tx_timeout = igb_tx_timeout, | |
2076 | .ndo_validate_addr = eth_validate_addr, | |
2e5c6922 SH |
2077 | .ndo_vlan_rx_add_vid = igb_vlan_rx_add_vid, |
2078 | .ndo_vlan_rx_kill_vid = igb_vlan_rx_kill_vid, | |
8151d294 WM |
2079 | .ndo_set_vf_mac = igb_ndo_set_vf_mac, |
2080 | .ndo_set_vf_vlan = igb_ndo_set_vf_vlan, | |
ed616689 | 2081 | .ndo_set_vf_rate = igb_ndo_set_vf_bw, |
70ea4783 | 2082 | .ndo_set_vf_spoofchk = igb_ndo_set_vf_spoofchk, |
8151d294 | 2083 | .ndo_get_vf_config = igb_ndo_get_vf_config, |
2e5c6922 SH |
2084 | #ifdef CONFIG_NET_POLL_CONTROLLER |
2085 | .ndo_poll_controller = igb_netpoll, | |
2086 | #endif | |
b2cb09b1 JP |
2087 | .ndo_fix_features = igb_fix_features, |
2088 | .ndo_set_features = igb_set_features, | |
1abbc98a | 2089 | .ndo_features_check = passthru_features_check, |
2e5c6922 SH |
2090 | }; |
2091 | ||
d67974f0 CW |
2092 | /** |
2093 | * igb_set_fw_version - Configure version string for ethtool | |
2094 | * @adapter: adapter struct | |
d67974f0 CW |
2095 | **/ |
2096 | void igb_set_fw_version(struct igb_adapter *adapter) | |
2097 | { | |
2098 | struct e1000_hw *hw = &adapter->hw; | |
0b1a6f2e CW |
2099 | struct e1000_fw_version fw; |
2100 | ||
2101 | igb_get_fw_version(hw, &fw); | |
2102 | ||
2103 | switch (hw->mac.type) { | |
7dc98a62 | 2104 | case e1000_i210: |
0b1a6f2e | 2105 | case e1000_i211: |
7dc98a62 CW |
2106 | if (!(igb_get_flash_presence_i210(hw))) { |
2107 | snprintf(adapter->fw_version, | |
2108 | sizeof(adapter->fw_version), | |
2109 | "%2d.%2d-%d", | |
2110 | fw.invm_major, fw.invm_minor, | |
2111 | fw.invm_img_type); | |
2112 | break; | |
2113 | } | |
2114 | /* fall through */ | |
0b1a6f2e CW |
2115 | default: |
2116 | /* if option is rom valid, display its version too */ | |
2117 | if (fw.or_valid) { | |
2118 | snprintf(adapter->fw_version, | |
2119 | sizeof(adapter->fw_version), | |
2120 | "%d.%d, 0x%08x, %d.%d.%d", | |
2121 | fw.eep_major, fw.eep_minor, fw.etrack_id, | |
2122 | fw.or_major, fw.or_build, fw.or_patch); | |
2123 | /* no option rom */ | |
7dc98a62 | 2124 | } else if (fw.etrack_id != 0X0000) { |
0b1a6f2e | 2125 | snprintf(adapter->fw_version, |
7dc98a62 CW |
2126 | sizeof(adapter->fw_version), |
2127 | "%d.%d, 0x%08x", | |
2128 | fw.eep_major, fw.eep_minor, fw.etrack_id); | |
2129 | } else { | |
2130 | snprintf(adapter->fw_version, | |
2131 | sizeof(adapter->fw_version), | |
2132 | "%d.%d.%d", | |
2133 | fw.eep_major, fw.eep_minor, fw.eep_build); | |
0b1a6f2e CW |
2134 | } |
2135 | break; | |
d67974f0 | 2136 | } |
d67974f0 CW |
2137 | } |
2138 | ||
56cec249 CW |
2139 | /** |
2140 | * igb_init_mas - init Media Autosense feature if enabled in the NVM | |
2141 | * | |
2142 | * @adapter: adapter struct | |
2143 | **/ | |
2144 | static void igb_init_mas(struct igb_adapter *adapter) | |
2145 | { | |
2146 | struct e1000_hw *hw = &adapter->hw; | |
2147 | u16 eeprom_data; | |
2148 | ||
2149 | hw->nvm.ops.read(hw, NVM_COMPAT, 1, &eeprom_data); | |
2150 | switch (hw->bus.func) { | |
2151 | case E1000_FUNC_0: | |
2152 | if (eeprom_data & IGB_MAS_ENABLE_0) { | |
2153 | adapter->flags |= IGB_FLAG_MAS_ENABLE; | |
2154 | netdev_info(adapter->netdev, | |
2155 | "MAS: Enabling Media Autosense for port %d\n", | |
2156 | hw->bus.func); | |
2157 | } | |
2158 | break; | |
2159 | case E1000_FUNC_1: | |
2160 | if (eeprom_data & IGB_MAS_ENABLE_1) { | |
2161 | adapter->flags |= IGB_FLAG_MAS_ENABLE; | |
2162 | netdev_info(adapter->netdev, | |
2163 | "MAS: Enabling Media Autosense for port %d\n", | |
2164 | hw->bus.func); | |
2165 | } | |
2166 | break; | |
2167 | case E1000_FUNC_2: | |
2168 | if (eeprom_data & IGB_MAS_ENABLE_2) { | |
2169 | adapter->flags |= IGB_FLAG_MAS_ENABLE; | |
2170 | netdev_info(adapter->netdev, | |
2171 | "MAS: Enabling Media Autosense for port %d\n", | |
2172 | hw->bus.func); | |
2173 | } | |
2174 | break; | |
2175 | case E1000_FUNC_3: | |
2176 | if (eeprom_data & IGB_MAS_ENABLE_3) { | |
2177 | adapter->flags |= IGB_FLAG_MAS_ENABLE; | |
2178 | netdev_info(adapter->netdev, | |
2179 | "MAS: Enabling Media Autosense for port %d\n", | |
2180 | hw->bus.func); | |
2181 | } | |
2182 | break; | |
2183 | default: | |
2184 | /* Shouldn't get here */ | |
2185 | netdev_err(adapter->netdev, | |
2186 | "MAS: Invalid port configuration, returning\n"); | |
2187 | break; | |
2188 | } | |
2189 | } | |
2190 | ||
b980ac18 JK |
2191 | /** |
2192 | * igb_init_i2c - Init I2C interface | |
441fc6fd | 2193 | * @adapter: pointer to adapter structure |
b980ac18 | 2194 | **/ |
441fc6fd CW |
2195 | static s32 igb_init_i2c(struct igb_adapter *adapter) |
2196 | { | |
23d87824 | 2197 | s32 status = 0; |
441fc6fd CW |
2198 | |
2199 | /* I2C interface supported on i350 devices */ | |
2200 | if (adapter->hw.mac.type != e1000_i350) | |
23d87824 | 2201 | return 0; |
441fc6fd CW |
2202 | |
2203 | /* Initialize the i2c bus which is controlled by the registers. | |
2204 | * This bus will use the i2c_algo_bit structue that implements | |
2205 | * the protocol through toggling of the 4 bits in the register. | |
2206 | */ | |
2207 | adapter->i2c_adap.owner = THIS_MODULE; | |
2208 | adapter->i2c_algo = igb_i2c_algo; | |
2209 | adapter->i2c_algo.data = adapter; | |
2210 | adapter->i2c_adap.algo_data = &adapter->i2c_algo; | |
2211 | adapter->i2c_adap.dev.parent = &adapter->pdev->dev; | |
2212 | strlcpy(adapter->i2c_adap.name, "igb BB", | |
2213 | sizeof(adapter->i2c_adap.name)); | |
2214 | status = i2c_bit_add_bus(&adapter->i2c_adap); | |
2215 | return status; | |
2216 | } | |
2217 | ||
9d5c8243 | 2218 | /** |
b980ac18 JK |
2219 | * igb_probe - Device Initialization Routine |
2220 | * @pdev: PCI device information struct | |
2221 | * @ent: entry in igb_pci_tbl | |
9d5c8243 | 2222 | * |
b980ac18 | 2223 | * Returns 0 on success, negative on failure |
9d5c8243 | 2224 | * |
b980ac18 JK |
2225 | * igb_probe initializes an adapter identified by a pci_dev structure. |
2226 | * The OS initialization, configuring of the adapter private structure, | |
2227 | * and a hardware reset occur. | |
9d5c8243 | 2228 | **/ |
1dd06ae8 | 2229 | static int igb_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
9d5c8243 AK |
2230 | { |
2231 | struct net_device *netdev; | |
2232 | struct igb_adapter *adapter; | |
2233 | struct e1000_hw *hw; | |
4337e993 | 2234 | u16 eeprom_data = 0; |
9835fd73 | 2235 | s32 ret_val; |
4337e993 | 2236 | static int global_quad_port_a; /* global quad port a indication */ |
9d5c8243 | 2237 | const struct e1000_info *ei = igb_info_tbl[ent->driver_data]; |
2d6a5e95 | 2238 | int err, pci_using_dac; |
9835fd73 | 2239 | u8 part_str[E1000_PBANUM_LENGTH]; |
9d5c8243 | 2240 | |
bded64a7 AG |
2241 | /* Catch broken hardware that put the wrong VF device ID in |
2242 | * the PCIe SR-IOV capability. | |
2243 | */ | |
2244 | if (pdev->is_virtfn) { | |
2245 | WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n", | |
f96a8a0b | 2246 | pci_name(pdev), pdev->vendor, pdev->device); |
bded64a7 AG |
2247 | return -EINVAL; |
2248 | } | |
2249 | ||
aed5dec3 | 2250 | err = pci_enable_device_mem(pdev); |
9d5c8243 AK |
2251 | if (err) |
2252 | return err; | |
2253 | ||
2254 | pci_using_dac = 0; | |
dc4ff9bb | 2255 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); |
9d5c8243 | 2256 | if (!err) { |
dc4ff9bb | 2257 | pci_using_dac = 1; |
9d5c8243 | 2258 | } else { |
dc4ff9bb | 2259 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); |
9d5c8243 | 2260 | if (err) { |
dc4ff9bb RK |
2261 | dev_err(&pdev->dev, |
2262 | "No usable DMA configuration, aborting\n"); | |
2263 | goto err_dma; | |
9d5c8243 AK |
2264 | } |
2265 | } | |
2266 | ||
aed5dec3 | 2267 | err = pci_request_selected_regions(pdev, pci_select_bars(pdev, |
b980ac18 JK |
2268 | IORESOURCE_MEM), |
2269 | igb_driver_name); | |
9d5c8243 AK |
2270 | if (err) |
2271 | goto err_pci_reg; | |
2272 | ||
19d5afd4 | 2273 | pci_enable_pcie_error_reporting(pdev); |
40a914fa | 2274 | |
9d5c8243 | 2275 | pci_set_master(pdev); |
c682fc23 | 2276 | pci_save_state(pdev); |
9d5c8243 AK |
2277 | |
2278 | err = -ENOMEM; | |
1bfaf07b | 2279 | netdev = alloc_etherdev_mq(sizeof(struct igb_adapter), |
1cc3bd87 | 2280 | IGB_MAX_TX_QUEUES); |
9d5c8243 AK |
2281 | if (!netdev) |
2282 | goto err_alloc_etherdev; | |
2283 | ||
2284 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2285 | ||
2286 | pci_set_drvdata(pdev, netdev); | |
2287 | adapter = netdev_priv(netdev); | |
2288 | adapter->netdev = netdev; | |
2289 | adapter->pdev = pdev; | |
2290 | hw = &adapter->hw; | |
2291 | hw->back = adapter; | |
b3f4d599 | 2292 | adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); |
9d5c8243 | 2293 | |
9d5c8243 | 2294 | err = -EIO; |
89dbefb2 | 2295 | hw->hw_addr = pci_iomap(pdev, 0, 0); |
28b0759c | 2296 | if (!hw->hw_addr) |
9d5c8243 AK |
2297 | goto err_ioremap; |
2298 | ||
2e5c6922 | 2299 | netdev->netdev_ops = &igb_netdev_ops; |
9d5c8243 | 2300 | igb_set_ethtool_ops(netdev); |
9d5c8243 | 2301 | netdev->watchdog_timeo = 5 * HZ; |
9d5c8243 AK |
2302 | |
2303 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); | |
2304 | ||
89dbefb2 AS |
2305 | netdev->mem_start = pci_resource_start(pdev, 0); |
2306 | netdev->mem_end = pci_resource_end(pdev, 0); | |
9d5c8243 | 2307 | |
9d5c8243 AK |
2308 | /* PCI config space info */ |
2309 | hw->vendor_id = pdev->vendor; | |
2310 | hw->device_id = pdev->device; | |
2311 | hw->revision_id = pdev->revision; | |
2312 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
2313 | hw->subsystem_device_id = pdev->subsystem_device; | |
2314 | ||
9d5c8243 AK |
2315 | /* Copy the default MAC, PHY and NVM function pointers */ |
2316 | memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); | |
2317 | memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); | |
2318 | memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); | |
2319 | /* Initialize skew-specific constants */ | |
2320 | err = ei->get_invariants(hw); | |
2321 | if (err) | |
450c87c8 | 2322 | goto err_sw_init; |
9d5c8243 | 2323 | |
450c87c8 | 2324 | /* setup the private structure */ |
9d5c8243 AK |
2325 | err = igb_sw_init(adapter); |
2326 | if (err) | |
2327 | goto err_sw_init; | |
2328 | ||
2329 | igb_get_bus_info_pcie(hw); | |
2330 | ||
2331 | hw->phy.autoneg_wait_to_complete = false; | |
9d5c8243 AK |
2332 | |
2333 | /* Copper options */ | |
2334 | if (hw->phy.media_type == e1000_media_type_copper) { | |
2335 | hw->phy.mdix = AUTO_ALL_MODES; | |
2336 | hw->phy.disable_polarity_correction = false; | |
2337 | hw->phy.ms_type = e1000_ms_hw_default; | |
2338 | } | |
2339 | ||
2340 | if (igb_check_reset_block(hw)) | |
2341 | dev_info(&pdev->dev, | |
2342 | "PHY reset is blocked due to SOL/IDER session.\n"); | |
2343 | ||
b980ac18 | 2344 | /* features is initialized to 0 in allocation, it might have bits |
077887c3 AD |
2345 | * set by igb_sw_init so we should use an or instead of an |
2346 | * assignment. | |
2347 | */ | |
2348 | netdev->features |= NETIF_F_SG | | |
2349 | NETIF_F_IP_CSUM | | |
2350 | NETIF_F_IPV6_CSUM | | |
2351 | NETIF_F_TSO | | |
2352 | NETIF_F_TSO6 | | |
2353 | NETIF_F_RXHASH | | |
2354 | NETIF_F_RXCSUM | | |
f646968f PM |
2355 | NETIF_F_HW_VLAN_CTAG_RX | |
2356 | NETIF_F_HW_VLAN_CTAG_TX; | |
077887c3 AD |
2357 | |
2358 | /* copy netdev features into list of user selectable features */ | |
2359 | netdev->hw_features |= netdev->features; | |
89eaefb6 | 2360 | netdev->hw_features |= NETIF_F_RXALL; |
077887c3 AD |
2361 | |
2362 | /* set this bit last since it cannot be part of hw_features */ | |
f646968f | 2363 | netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; |
077887c3 AD |
2364 | |
2365 | netdev->vlan_features |= NETIF_F_TSO | | |
2366 | NETIF_F_TSO6 | | |
2367 | NETIF_F_IP_CSUM | | |
2368 | NETIF_F_IPV6_CSUM | | |
2369 | NETIF_F_SG; | |
48f29ffc | 2370 | |
6b8f0922 BG |
2371 | netdev->priv_flags |= IFF_SUPP_NOFCS; |
2372 | ||
7b872a55 | 2373 | if (pci_using_dac) { |
9d5c8243 | 2374 | netdev->features |= NETIF_F_HIGHDMA; |
7b872a55 YZ |
2375 | netdev->vlan_features |= NETIF_F_HIGHDMA; |
2376 | } | |
9d5c8243 | 2377 | |
ac52caa3 MM |
2378 | if (hw->mac.type >= e1000_82576) { |
2379 | netdev->hw_features |= NETIF_F_SCTP_CSUM; | |
b9473560 | 2380 | netdev->features |= NETIF_F_SCTP_CSUM; |
ac52caa3 | 2381 | } |
b9473560 | 2382 | |
01789349 JP |
2383 | netdev->priv_flags |= IFF_UNICAST_FLT; |
2384 | ||
330a6d6a | 2385 | adapter->en_mng_pt = igb_enable_mng_pass_thru(hw); |
9d5c8243 AK |
2386 | |
2387 | /* before reading the NVM, reset the controller to put the device in a | |
b980ac18 JK |
2388 | * known good starting state |
2389 | */ | |
9d5c8243 AK |
2390 | hw->mac.ops.reset_hw(hw); |
2391 | ||
ef3a0092 CW |
2392 | /* make sure the NVM is good , i211/i210 parts can have special NVM |
2393 | * that doesn't contain a checksum | |
f96a8a0b | 2394 | */ |
ef3a0092 CW |
2395 | switch (hw->mac.type) { |
2396 | case e1000_i210: | |
2397 | case e1000_i211: | |
2398 | if (igb_get_flash_presence_i210(hw)) { | |
2399 | if (hw->nvm.ops.validate(hw) < 0) { | |
2400 | dev_err(&pdev->dev, | |
2401 | "The NVM Checksum Is Not Valid\n"); | |
2402 | err = -EIO; | |
2403 | goto err_eeprom; | |
2404 | } | |
2405 | } | |
2406 | break; | |
2407 | default: | |
f96a8a0b CW |
2408 | if (hw->nvm.ops.validate(hw) < 0) { |
2409 | dev_err(&pdev->dev, "The NVM Checksum Is Not Valid\n"); | |
2410 | err = -EIO; | |
2411 | goto err_eeprom; | |
2412 | } | |
ef3a0092 | 2413 | break; |
9d5c8243 AK |
2414 | } |
2415 | ||
2416 | /* copy the MAC address out of the NVM */ | |
2417 | if (hw->mac.ops.read_mac_addr(hw)) | |
2418 | dev_err(&pdev->dev, "NVM Read Error\n"); | |
2419 | ||
2420 | memcpy(netdev->dev_addr, hw->mac.addr, netdev->addr_len); | |
9d5c8243 | 2421 | |
aaeb6cdf | 2422 | if (!is_valid_ether_addr(netdev->dev_addr)) { |
9d5c8243 AK |
2423 | dev_err(&pdev->dev, "Invalid MAC Address\n"); |
2424 | err = -EIO; | |
2425 | goto err_eeprom; | |
2426 | } | |
2427 | ||
d67974f0 CW |
2428 | /* get firmware version for ethtool -i */ |
2429 | igb_set_fw_version(adapter); | |
2430 | ||
27dff8b2 TF |
2431 | /* configure RXPBSIZE and TXPBSIZE */ |
2432 | if (hw->mac.type == e1000_i210) { | |
2433 | wr32(E1000_RXPBS, I210_RXPBSIZE_DEFAULT); | |
2434 | wr32(E1000_TXPBS, I210_TXPBSIZE_DEFAULT); | |
2435 | } | |
2436 | ||
c061b18d | 2437 | setup_timer(&adapter->watchdog_timer, igb_watchdog, |
b980ac18 | 2438 | (unsigned long) adapter); |
c061b18d | 2439 | setup_timer(&adapter->phy_info_timer, igb_update_phy_info, |
b980ac18 | 2440 | (unsigned long) adapter); |
9d5c8243 AK |
2441 | |
2442 | INIT_WORK(&adapter->reset_task, igb_reset_task); | |
2443 | INIT_WORK(&adapter->watchdog_task, igb_watchdog_task); | |
2444 | ||
450c87c8 | 2445 | /* Initialize link properties that are user-changeable */ |
9d5c8243 AK |
2446 | adapter->fc_autoneg = true; |
2447 | hw->mac.autoneg = true; | |
2448 | hw->phy.autoneg_advertised = 0x2f; | |
2449 | ||
0cce119a AD |
2450 | hw->fc.requested_mode = e1000_fc_default; |
2451 | hw->fc.current_mode = e1000_fc_default; | |
9d5c8243 | 2452 | |
9d5c8243 AK |
2453 | igb_validate_mdi_setting(hw); |
2454 | ||
63d4a8f9 | 2455 | /* By default, support wake on port A */ |
a2cf8b6c | 2456 | if (hw->bus.func == 0) |
63d4a8f9 MV |
2457 | adapter->flags |= IGB_FLAG_WOL_SUPPORTED; |
2458 | ||
2459 | /* Check the NVM for wake support on non-port A ports */ | |
2460 | if (hw->mac.type >= e1000_82580) | |
55cac248 | 2461 | hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A + |
b980ac18 JK |
2462 | NVM_82580_LAN_FUNC_OFFSET(hw->bus.func), 1, |
2463 | &eeprom_data); | |
a2cf8b6c AD |
2464 | else if (hw->bus.func == 1) |
2465 | hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); | |
9d5c8243 | 2466 | |
63d4a8f9 MV |
2467 | if (eeprom_data & IGB_EEPROM_APME) |
2468 | adapter->flags |= IGB_FLAG_WOL_SUPPORTED; | |
9d5c8243 AK |
2469 | |
2470 | /* now that we have the eeprom settings, apply the special cases where | |
2471 | * the eeprom may be wrong or the board simply won't support wake on | |
b980ac18 JK |
2472 | * lan on a particular port |
2473 | */ | |
9d5c8243 AK |
2474 | switch (pdev->device) { |
2475 | case E1000_DEV_ID_82575GB_QUAD_COPPER: | |
63d4a8f9 | 2476 | adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED; |
9d5c8243 AK |
2477 | break; |
2478 | case E1000_DEV_ID_82575EB_FIBER_SERDES: | |
2d064c06 AD |
2479 | case E1000_DEV_ID_82576_FIBER: |
2480 | case E1000_DEV_ID_82576_SERDES: | |
9d5c8243 | 2481 | /* Wake events only supported on port A for dual fiber |
b980ac18 JK |
2482 | * regardless of eeprom setting |
2483 | */ | |
9d5c8243 | 2484 | if (rd32(E1000_STATUS) & E1000_STATUS_FUNC_1) |
63d4a8f9 | 2485 | adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED; |
9d5c8243 | 2486 | break; |
c8ea5ea9 | 2487 | case E1000_DEV_ID_82576_QUAD_COPPER: |
d5aa2252 | 2488 | case E1000_DEV_ID_82576_QUAD_COPPER_ET2: |
c8ea5ea9 AD |
2489 | /* if quad port adapter, disable WoL on all but port A */ |
2490 | if (global_quad_port_a != 0) | |
63d4a8f9 | 2491 | adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED; |
c8ea5ea9 AD |
2492 | else |
2493 | adapter->flags |= IGB_FLAG_QUAD_PORT_A; | |
2494 | /* Reset for multiple quad port adapters */ | |
2495 | if (++global_quad_port_a == 4) | |
2496 | global_quad_port_a = 0; | |
2497 | break; | |
63d4a8f9 MV |
2498 | default: |
2499 | /* If the device can't wake, don't set software support */ | |
2500 | if (!device_can_wakeup(&adapter->pdev->dev)) | |
2501 | adapter->flags &= ~IGB_FLAG_WOL_SUPPORTED; | |
9d5c8243 AK |
2502 | } |
2503 | ||
2504 | /* initialize the wol settings based on the eeprom settings */ | |
63d4a8f9 MV |
2505 | if (adapter->flags & IGB_FLAG_WOL_SUPPORTED) |
2506 | adapter->wol |= E1000_WUFC_MAG; | |
2507 | ||
2508 | /* Some vendors want WoL disabled by default, but still supported */ | |
2509 | if ((hw->mac.type == e1000_i350) && | |
2510 | (pdev->subsystem_vendor == PCI_VENDOR_ID_HP)) { | |
2511 | adapter->flags |= IGB_FLAG_WOL_SUPPORTED; | |
2512 | adapter->wol = 0; | |
2513 | } | |
2514 | ||
2515 | device_set_wakeup_enable(&adapter->pdev->dev, | |
2516 | adapter->flags & IGB_FLAG_WOL_SUPPORTED); | |
9d5c8243 AK |
2517 | |
2518 | /* reset the hardware with the new settings */ | |
2519 | igb_reset(adapter); | |
2520 | ||
441fc6fd CW |
2521 | /* Init the I2C interface */ |
2522 | err = igb_init_i2c(adapter); | |
2523 | if (err) { | |
2524 | dev_err(&pdev->dev, "failed to init i2c interface\n"); | |
2525 | goto err_eeprom; | |
2526 | } | |
2527 | ||
9d5c8243 | 2528 | /* let the f/w know that the h/w is now under the control of the |
e52c0f96 CW |
2529 | * driver. |
2530 | */ | |
9d5c8243 AK |
2531 | igb_get_hw_control(adapter); |
2532 | ||
9d5c8243 AK |
2533 | strcpy(netdev->name, "eth%d"); |
2534 | err = register_netdev(netdev); | |
2535 | if (err) | |
2536 | goto err_register; | |
2537 | ||
b168dfc5 JB |
2538 | /* carrier off reporting is important to ethtool even BEFORE open */ |
2539 | netif_carrier_off(netdev); | |
2540 | ||
421e02f0 | 2541 | #ifdef CONFIG_IGB_DCA |
bbd98fe4 | 2542 | if (dca_add_requester(&pdev->dev) == 0) { |
7dfc16fa | 2543 | adapter->flags |= IGB_FLAG_DCA_ENABLED; |
fe4506b6 | 2544 | dev_info(&pdev->dev, "DCA enabled\n"); |
fe4506b6 JC |
2545 | igb_setup_dca(adapter); |
2546 | } | |
fe4506b6 | 2547 | |
38c845c7 | 2548 | #endif |
e428893b CW |
2549 | #ifdef CONFIG_IGB_HWMON |
2550 | /* Initialize the thermal sensor on i350 devices. */ | |
2551 | if (hw->mac.type == e1000_i350 && hw->bus.func == 0) { | |
2552 | u16 ets_word; | |
3c89f6d0 | 2553 | |
b980ac18 | 2554 | /* Read the NVM to determine if this i350 device supports an |
e428893b CW |
2555 | * external thermal sensor. |
2556 | */ | |
2557 | hw->nvm.ops.read(hw, NVM_ETS_CFG, 1, &ets_word); | |
2558 | if (ets_word != 0x0000 && ets_word != 0xFFFF) | |
2559 | adapter->ets = true; | |
2560 | else | |
2561 | adapter->ets = false; | |
2562 | if (igb_sysfs_init(adapter)) | |
2563 | dev_err(&pdev->dev, | |
2564 | "failed to allocate sysfs resources\n"); | |
2565 | } else { | |
2566 | adapter->ets = false; | |
2567 | } | |
2568 | #endif | |
56cec249 CW |
2569 | /* Check if Media Autosense is enabled */ |
2570 | adapter->ei = *ei; | |
2571 | if (hw->dev_spec._82575.mas_capable) | |
2572 | igb_init_mas(adapter); | |
2573 | ||
673b8b70 | 2574 | /* do hw tstamp init after resetting */ |
7ebae817 | 2575 | igb_ptp_init(adapter); |
673b8b70 | 2576 | |
9d5c8243 | 2577 | dev_info(&pdev->dev, "Intel(R) Gigabit Ethernet Network Connection\n"); |
ceb5f13b CW |
2578 | /* print bus type/speed/width info, not applicable to i354 */ |
2579 | if (hw->mac.type != e1000_i354) { | |
2580 | dev_info(&pdev->dev, "%s: (PCIe:%s:%s) %pM\n", | |
2581 | netdev->name, | |
2582 | ((hw->bus.speed == e1000_bus_speed_2500) ? "2.5Gb/s" : | |
2583 | (hw->bus.speed == e1000_bus_speed_5000) ? "5.0Gb/s" : | |
2584 | "unknown"), | |
2585 | ((hw->bus.width == e1000_bus_width_pcie_x4) ? | |
2586 | "Width x4" : | |
2587 | (hw->bus.width == e1000_bus_width_pcie_x2) ? | |
2588 | "Width x2" : | |
2589 | (hw->bus.width == e1000_bus_width_pcie_x1) ? | |
2590 | "Width x1" : "unknown"), netdev->dev_addr); | |
2591 | } | |
9d5c8243 | 2592 | |
53ea6c7e TF |
2593 | if ((hw->mac.type >= e1000_i210 || |
2594 | igb_get_flash_presence_i210(hw))) { | |
2595 | ret_val = igb_read_part_string(hw, part_str, | |
2596 | E1000_PBANUM_LENGTH); | |
2597 | } else { | |
2598 | ret_val = -E1000_ERR_INVM_VALUE_NOT_FOUND; | |
2599 | } | |
2600 | ||
9835fd73 CW |
2601 | if (ret_val) |
2602 | strcpy(part_str, "Unknown"); | |
2603 | dev_info(&pdev->dev, "%s: PBA No: %s\n", netdev->name, part_str); | |
9d5c8243 AK |
2604 | dev_info(&pdev->dev, |
2605 | "Using %s interrupts. %d rx queue(s), %d tx queue(s)\n", | |
cd14ef54 | 2606 | (adapter->flags & IGB_FLAG_HAS_MSIX) ? "MSI-X" : |
7dfc16fa | 2607 | (adapter->flags & IGB_FLAG_HAS_MSI) ? "MSI" : "legacy", |
9d5c8243 | 2608 | adapter->num_rx_queues, adapter->num_tx_queues); |
f4c01e96 CW |
2609 | if (hw->phy.media_type == e1000_media_type_copper) { |
2610 | switch (hw->mac.type) { | |
2611 | case e1000_i350: | |
2612 | case e1000_i210: | |
2613 | case e1000_i211: | |
2614 | /* Enable EEE for internal copper PHY devices */ | |
c4c112f1 | 2615 | err = igb_set_eee_i350(hw, true, true); |
f4c01e96 CW |
2616 | if ((!err) && |
2617 | (!hw->dev_spec._82575.eee_disable)) { | |
2618 | adapter->eee_advert = | |
2619 | MDIO_EEE_100TX | MDIO_EEE_1000T; | |
2620 | adapter->flags |= IGB_FLAG_EEE; | |
2621 | } | |
2622 | break; | |
2623 | case e1000_i354: | |
ceb5f13b | 2624 | if ((rd32(E1000_CTRL_EXT) & |
f4c01e96 | 2625 | E1000_CTRL_EXT_LINK_MODE_SGMII)) { |
c4c112f1 | 2626 | err = igb_set_eee_i354(hw, true, true); |
f4c01e96 CW |
2627 | if ((!err) && |
2628 | (!hw->dev_spec._82575.eee_disable)) { | |
2629 | adapter->eee_advert = | |
2630 | MDIO_EEE_100TX | MDIO_EEE_1000T; | |
2631 | adapter->flags |= IGB_FLAG_EEE; | |
2632 | } | |
2633 | } | |
2634 | break; | |
2635 | default: | |
2636 | break; | |
ceb5f13b | 2637 | } |
09b068d4 | 2638 | } |
749ab2cd | 2639 | pm_runtime_put_noidle(&pdev->dev); |
9d5c8243 AK |
2640 | return 0; |
2641 | ||
2642 | err_register: | |
2643 | igb_release_hw_control(adapter); | |
441fc6fd | 2644 | memset(&adapter->i2c_adap, 0, sizeof(adapter->i2c_adap)); |
9d5c8243 AK |
2645 | err_eeprom: |
2646 | if (!igb_check_reset_block(hw)) | |
f5f4cf08 | 2647 | igb_reset_phy(hw); |
9d5c8243 AK |
2648 | |
2649 | if (hw->flash_address) | |
2650 | iounmap(hw->flash_address); | |
9d5c8243 | 2651 | err_sw_init: |
42ad1a03 | 2652 | kfree(adapter->shadow_vfta); |
047e0030 | 2653 | igb_clear_interrupt_scheme(adapter); |
75009b3a | 2654 | pci_iounmap(pdev, hw->hw_addr); |
9d5c8243 AK |
2655 | err_ioremap: |
2656 | free_netdev(netdev); | |
2657 | err_alloc_etherdev: | |
559e9c49 | 2658 | pci_release_selected_regions(pdev, |
b980ac18 | 2659 | pci_select_bars(pdev, IORESOURCE_MEM)); |
9d5c8243 AK |
2660 | err_pci_reg: |
2661 | err_dma: | |
2662 | pci_disable_device(pdev); | |
2663 | return err; | |
2664 | } | |
2665 | ||
fa44f2f1 | 2666 | #ifdef CONFIG_PCI_IOV |
781798a1 | 2667 | static int igb_disable_sriov(struct pci_dev *pdev) |
fa44f2f1 GR |
2668 | { |
2669 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2670 | struct igb_adapter *adapter = netdev_priv(netdev); | |
2671 | struct e1000_hw *hw = &adapter->hw; | |
2672 | ||
2673 | /* reclaim resources allocated to VFs */ | |
2674 | if (adapter->vf_data) { | |
2675 | /* disable iov and allow time for transactions to clear */ | |
b09186d2 | 2676 | if (pci_vfs_assigned(pdev)) { |
fa44f2f1 GR |
2677 | dev_warn(&pdev->dev, |
2678 | "Cannot deallocate SR-IOV virtual functions while they are assigned - VFs will not be deallocated\n"); | |
2679 | return -EPERM; | |
2680 | } else { | |
2681 | pci_disable_sriov(pdev); | |
2682 | msleep(500); | |
2683 | } | |
2684 | ||
2685 | kfree(adapter->vf_data); | |
2686 | adapter->vf_data = NULL; | |
2687 | adapter->vfs_allocated_count = 0; | |
2688 | wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ); | |
2689 | wrfl(); | |
2690 | msleep(100); | |
2691 | dev_info(&pdev->dev, "IOV Disabled\n"); | |
2692 | ||
2693 | /* Re-enable DMA Coalescing flag since IOV is turned off */ | |
2694 | adapter->flags |= IGB_FLAG_DMAC; | |
2695 | } | |
2696 | ||
2697 | return 0; | |
2698 | } | |
2699 | ||
2700 | static int igb_enable_sriov(struct pci_dev *pdev, int num_vfs) | |
2701 | { | |
2702 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2703 | struct igb_adapter *adapter = netdev_priv(netdev); | |
2704 | int old_vfs = pci_num_vf(pdev); | |
2705 | int err = 0; | |
2706 | int i; | |
2707 | ||
cd14ef54 | 2708 | if (!(adapter->flags & IGB_FLAG_HAS_MSIX) || num_vfs > 7) { |
50267196 MW |
2709 | err = -EPERM; |
2710 | goto out; | |
2711 | } | |
fa44f2f1 GR |
2712 | if (!num_vfs) |
2713 | goto out; | |
fa44f2f1 | 2714 | |
781798a1 SA |
2715 | if (old_vfs) { |
2716 | dev_info(&pdev->dev, "%d pre-allocated VFs found - override max_vfs setting of %d\n", | |
2717 | old_vfs, max_vfs); | |
2718 | adapter->vfs_allocated_count = old_vfs; | |
2719 | } else | |
2720 | adapter->vfs_allocated_count = num_vfs; | |
fa44f2f1 GR |
2721 | |
2722 | adapter->vf_data = kcalloc(adapter->vfs_allocated_count, | |
2723 | sizeof(struct vf_data_storage), GFP_KERNEL); | |
2724 | ||
2725 | /* if allocation failed then we do not support SR-IOV */ | |
2726 | if (!adapter->vf_data) { | |
2727 | adapter->vfs_allocated_count = 0; | |
2728 | dev_err(&pdev->dev, | |
2729 | "Unable to allocate memory for VF Data Storage\n"); | |
2730 | err = -ENOMEM; | |
2731 | goto out; | |
2732 | } | |
2733 | ||
781798a1 SA |
2734 | /* only call pci_enable_sriov() if no VFs are allocated already */ |
2735 | if (!old_vfs) { | |
2736 | err = pci_enable_sriov(pdev, adapter->vfs_allocated_count); | |
2737 | if (err) | |
2738 | goto err_out; | |
2739 | } | |
fa44f2f1 GR |
2740 | dev_info(&pdev->dev, "%d VFs allocated\n", |
2741 | adapter->vfs_allocated_count); | |
2742 | for (i = 0; i < adapter->vfs_allocated_count; i++) | |
2743 | igb_vf_configure(adapter, i); | |
2744 | ||
2745 | /* DMA Coalescing is not supported in IOV mode. */ | |
2746 | adapter->flags &= ~IGB_FLAG_DMAC; | |
2747 | goto out; | |
2748 | ||
2749 | err_out: | |
2750 | kfree(adapter->vf_data); | |
2751 | adapter->vf_data = NULL; | |
2752 | adapter->vfs_allocated_count = 0; | |
2753 | out: | |
2754 | return err; | |
2755 | } | |
2756 | ||
2757 | #endif | |
b980ac18 | 2758 | /** |
441fc6fd CW |
2759 | * igb_remove_i2c - Cleanup I2C interface |
2760 | * @adapter: pointer to adapter structure | |
b980ac18 | 2761 | **/ |
441fc6fd CW |
2762 | static void igb_remove_i2c(struct igb_adapter *adapter) |
2763 | { | |
441fc6fd CW |
2764 | /* free the adapter bus structure */ |
2765 | i2c_del_adapter(&adapter->i2c_adap); | |
2766 | } | |
2767 | ||
9d5c8243 | 2768 | /** |
b980ac18 JK |
2769 | * igb_remove - Device Removal Routine |
2770 | * @pdev: PCI device information struct | |
9d5c8243 | 2771 | * |
b980ac18 JK |
2772 | * igb_remove is called by the PCI subsystem to alert the driver |
2773 | * that it should release a PCI device. The could be caused by a | |
2774 | * Hot-Plug event, or because the driver is going to be removed from | |
2775 | * memory. | |
9d5c8243 | 2776 | **/ |
9f9a12f8 | 2777 | static void igb_remove(struct pci_dev *pdev) |
9d5c8243 AK |
2778 | { |
2779 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2780 | struct igb_adapter *adapter = netdev_priv(netdev); | |
fe4506b6 | 2781 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 | 2782 | |
749ab2cd | 2783 | pm_runtime_get_noresume(&pdev->dev); |
e428893b CW |
2784 | #ifdef CONFIG_IGB_HWMON |
2785 | igb_sysfs_exit(adapter); | |
2786 | #endif | |
441fc6fd | 2787 | igb_remove_i2c(adapter); |
a79f4f88 | 2788 | igb_ptp_stop(adapter); |
b980ac18 | 2789 | /* The watchdog timer may be rescheduled, so explicitly |
760141a5 TH |
2790 | * disable watchdog from being rescheduled. |
2791 | */ | |
9d5c8243 AK |
2792 | set_bit(__IGB_DOWN, &adapter->state); |
2793 | del_timer_sync(&adapter->watchdog_timer); | |
2794 | del_timer_sync(&adapter->phy_info_timer); | |
2795 | ||
760141a5 TH |
2796 | cancel_work_sync(&adapter->reset_task); |
2797 | cancel_work_sync(&adapter->watchdog_task); | |
9d5c8243 | 2798 | |
421e02f0 | 2799 | #ifdef CONFIG_IGB_DCA |
7dfc16fa | 2800 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) { |
fe4506b6 JC |
2801 | dev_info(&pdev->dev, "DCA disabled\n"); |
2802 | dca_remove_requester(&pdev->dev); | |
7dfc16fa | 2803 | adapter->flags &= ~IGB_FLAG_DCA_ENABLED; |
cbd347ad | 2804 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE); |
fe4506b6 JC |
2805 | } |
2806 | #endif | |
2807 | ||
9d5c8243 | 2808 | /* Release control of h/w to f/w. If f/w is AMT enabled, this |
b980ac18 JK |
2809 | * would have already happened in close and is redundant. |
2810 | */ | |
9d5c8243 AK |
2811 | igb_release_hw_control(adapter); |
2812 | ||
37680117 | 2813 | #ifdef CONFIG_PCI_IOV |
fa44f2f1 | 2814 | igb_disable_sriov(pdev); |
37680117 | 2815 | #endif |
559e9c49 | 2816 | |
c23d92b8 AW |
2817 | unregister_netdev(netdev); |
2818 | ||
2819 | igb_clear_interrupt_scheme(adapter); | |
2820 | ||
75009b3a | 2821 | pci_iounmap(pdev, hw->hw_addr); |
28b0759c AD |
2822 | if (hw->flash_address) |
2823 | iounmap(hw->flash_address); | |
559e9c49 | 2824 | pci_release_selected_regions(pdev, |
b980ac18 | 2825 | pci_select_bars(pdev, IORESOURCE_MEM)); |
9d5c8243 | 2826 | |
1128c756 | 2827 | kfree(adapter->shadow_vfta); |
9d5c8243 AK |
2828 | free_netdev(netdev); |
2829 | ||
19d5afd4 | 2830 | pci_disable_pcie_error_reporting(pdev); |
40a914fa | 2831 | |
9d5c8243 AK |
2832 | pci_disable_device(pdev); |
2833 | } | |
2834 | ||
a6b623e0 | 2835 | /** |
b980ac18 JK |
2836 | * igb_probe_vfs - Initialize vf data storage and add VFs to pci config space |
2837 | * @adapter: board private structure to initialize | |
a6b623e0 | 2838 | * |
b980ac18 JK |
2839 | * This function initializes the vf specific data storage and then attempts to |
2840 | * allocate the VFs. The reason for ordering it this way is because it is much | |
2841 | * mor expensive time wise to disable SR-IOV than it is to allocate and free | |
2842 | * the memory for the VFs. | |
a6b623e0 | 2843 | **/ |
9f9a12f8 | 2844 | static void igb_probe_vfs(struct igb_adapter *adapter) |
a6b623e0 AD |
2845 | { |
2846 | #ifdef CONFIG_PCI_IOV | |
2847 | struct pci_dev *pdev = adapter->pdev; | |
f96a8a0b | 2848 | struct e1000_hw *hw = &adapter->hw; |
a6b623e0 | 2849 | |
f96a8a0b CW |
2850 | /* Virtualization features not supported on i210 family. */ |
2851 | if ((hw->mac.type == e1000_i210) || (hw->mac.type == e1000_i211)) | |
2852 | return; | |
2853 | ||
fa44f2f1 | 2854 | pci_sriov_set_totalvfs(pdev, 7); |
6423fc34 | 2855 | igb_enable_sriov(pdev, max_vfs); |
0224d663 | 2856 | |
a6b623e0 AD |
2857 | #endif /* CONFIG_PCI_IOV */ |
2858 | } | |
2859 | ||
fa44f2f1 | 2860 | static void igb_init_queue_configuration(struct igb_adapter *adapter) |
9d5c8243 AK |
2861 | { |
2862 | struct e1000_hw *hw = &adapter->hw; | |
374a542d | 2863 | u32 max_rss_queues; |
9d5c8243 | 2864 | |
374a542d | 2865 | /* Determine the maximum number of RSS queues supported. */ |
f96a8a0b | 2866 | switch (hw->mac.type) { |
374a542d MV |
2867 | case e1000_i211: |
2868 | max_rss_queues = IGB_MAX_RX_QUEUES_I211; | |
2869 | break; | |
2870 | case e1000_82575: | |
f96a8a0b | 2871 | case e1000_i210: |
374a542d MV |
2872 | max_rss_queues = IGB_MAX_RX_QUEUES_82575; |
2873 | break; | |
2874 | case e1000_i350: | |
2875 | /* I350 cannot do RSS and SR-IOV at the same time */ | |
2876 | if (!!adapter->vfs_allocated_count) { | |
2877 | max_rss_queues = 1; | |
2878 | break; | |
2879 | } | |
2880 | /* fall through */ | |
2881 | case e1000_82576: | |
2882 | if (!!adapter->vfs_allocated_count) { | |
2883 | max_rss_queues = 2; | |
2884 | break; | |
2885 | } | |
2886 | /* fall through */ | |
2887 | case e1000_82580: | |
ceb5f13b | 2888 | case e1000_i354: |
374a542d MV |
2889 | default: |
2890 | max_rss_queues = IGB_MAX_RX_QUEUES; | |
f96a8a0b | 2891 | break; |
374a542d MV |
2892 | } |
2893 | ||
2894 | adapter->rss_queues = min_t(u32, max_rss_queues, num_online_cpus()); | |
2895 | ||
72ddef05 SS |
2896 | igb_set_flag_queue_pairs(adapter, max_rss_queues); |
2897 | } | |
2898 | ||
2899 | void igb_set_flag_queue_pairs(struct igb_adapter *adapter, | |
2900 | const u32 max_rss_queues) | |
2901 | { | |
2902 | struct e1000_hw *hw = &adapter->hw; | |
2903 | ||
374a542d MV |
2904 | /* Determine if we need to pair queues. */ |
2905 | switch (hw->mac.type) { | |
2906 | case e1000_82575: | |
f96a8a0b | 2907 | case e1000_i211: |
374a542d | 2908 | /* Device supports enough interrupts without queue pairing. */ |
f96a8a0b | 2909 | break; |
374a542d | 2910 | case e1000_82576: |
b980ac18 | 2911 | /* If VFs are going to be allocated with RSS queues then we |
374a542d MV |
2912 | * should pair the queues in order to conserve interrupts due |
2913 | * to limited supply. | |
2914 | */ | |
2915 | if ((adapter->rss_queues > 1) && | |
2916 | (adapter->vfs_allocated_count > 6)) | |
2917 | adapter->flags |= IGB_FLAG_QUEUE_PAIRS; | |
2918 | /* fall through */ | |
2919 | case e1000_82580: | |
2920 | case e1000_i350: | |
ceb5f13b | 2921 | case e1000_i354: |
374a542d | 2922 | case e1000_i210: |
f96a8a0b | 2923 | default: |
b980ac18 | 2924 | /* If rss_queues > half of max_rss_queues, pair the queues in |
374a542d MV |
2925 | * order to conserve interrupts due to limited supply. |
2926 | */ | |
2927 | if (adapter->rss_queues > (max_rss_queues / 2)) | |
2928 | adapter->flags |= IGB_FLAG_QUEUE_PAIRS; | |
f96a8a0b CW |
2929 | break; |
2930 | } | |
fa44f2f1 GR |
2931 | } |
2932 | ||
2933 | /** | |
b980ac18 JK |
2934 | * igb_sw_init - Initialize general software structures (struct igb_adapter) |
2935 | * @adapter: board private structure to initialize | |
fa44f2f1 | 2936 | * |
b980ac18 JK |
2937 | * igb_sw_init initializes the Adapter private data structure. |
2938 | * Fields are initialized based on PCI device information and | |
2939 | * OS network device settings (MTU size). | |
fa44f2f1 GR |
2940 | **/ |
2941 | static int igb_sw_init(struct igb_adapter *adapter) | |
2942 | { | |
2943 | struct e1000_hw *hw = &adapter->hw; | |
2944 | struct net_device *netdev = adapter->netdev; | |
2945 | struct pci_dev *pdev = adapter->pdev; | |
2946 | ||
2947 | pci_read_config_word(pdev, PCI_COMMAND, &hw->bus.pci_cmd_word); | |
2948 | ||
2949 | /* set default ring sizes */ | |
2950 | adapter->tx_ring_count = IGB_DEFAULT_TXD; | |
2951 | adapter->rx_ring_count = IGB_DEFAULT_RXD; | |
2952 | ||
2953 | /* set default ITR values */ | |
2954 | adapter->rx_itr_setting = IGB_DEFAULT_ITR; | |
2955 | adapter->tx_itr_setting = IGB_DEFAULT_ITR; | |
2956 | ||
2957 | /* set default work limits */ | |
2958 | adapter->tx_work_limit = IGB_DEFAULT_TX_WORK; | |
2959 | ||
2960 | adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN + | |
2961 | VLAN_HLEN; | |
2962 | adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; | |
2963 | ||
2964 | spin_lock_init(&adapter->stats64_lock); | |
2965 | #ifdef CONFIG_PCI_IOV | |
2966 | switch (hw->mac.type) { | |
2967 | case e1000_82576: | |
2968 | case e1000_i350: | |
2969 | if (max_vfs > 7) { | |
2970 | dev_warn(&pdev->dev, | |
2971 | "Maximum of 7 VFs per PF, using max\n"); | |
d0f63acc | 2972 | max_vfs = adapter->vfs_allocated_count = 7; |
fa44f2f1 GR |
2973 | } else |
2974 | adapter->vfs_allocated_count = max_vfs; | |
2975 | if (adapter->vfs_allocated_count) | |
2976 | dev_warn(&pdev->dev, | |
2977 | "Enabling SR-IOV VFs using the module parameter is deprecated - please use the pci sysfs interface.\n"); | |
2978 | break; | |
2979 | default: | |
2980 | break; | |
2981 | } | |
2982 | #endif /* CONFIG_PCI_IOV */ | |
2983 | ||
2984 | igb_init_queue_configuration(adapter); | |
a99955fc | 2985 | |
1128c756 | 2986 | /* Setup and initialize a copy of the hw vlan table array */ |
b2adaca9 JP |
2987 | adapter->shadow_vfta = kcalloc(E1000_VLAN_FILTER_TBL_SIZE, sizeof(u32), |
2988 | GFP_ATOMIC); | |
1128c756 | 2989 | |
a6b623e0 | 2990 | /* This call may decrease the number of queues */ |
53c7d064 | 2991 | if (igb_init_interrupt_scheme(adapter, true)) { |
9d5c8243 AK |
2992 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); |
2993 | return -ENOMEM; | |
2994 | } | |
2995 | ||
a6b623e0 AD |
2996 | igb_probe_vfs(adapter); |
2997 | ||
9d5c8243 AK |
2998 | /* Explicitly disable IRQ since the NIC can be in any state. */ |
2999 | igb_irq_disable(adapter); | |
3000 | ||
f96a8a0b | 3001 | if (hw->mac.type >= e1000_i350) |
831ec0b4 CW |
3002 | adapter->flags &= ~IGB_FLAG_DMAC; |
3003 | ||
9d5c8243 AK |
3004 | set_bit(__IGB_DOWN, &adapter->state); |
3005 | return 0; | |
3006 | } | |
3007 | ||
3008 | /** | |
b980ac18 JK |
3009 | * igb_open - Called when a network interface is made active |
3010 | * @netdev: network interface device structure | |
9d5c8243 | 3011 | * |
b980ac18 | 3012 | * Returns 0 on success, negative value on failure |
9d5c8243 | 3013 | * |
b980ac18 JK |
3014 | * The open entry point is called when a network interface is made |
3015 | * active by the system (IFF_UP). At this point all resources needed | |
3016 | * for transmit and receive operations are allocated, the interrupt | |
3017 | * handler is registered with the OS, the watchdog timer is started, | |
3018 | * and the stack is notified that the interface is ready. | |
9d5c8243 | 3019 | **/ |
749ab2cd | 3020 | static int __igb_open(struct net_device *netdev, bool resuming) |
9d5c8243 AK |
3021 | { |
3022 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3023 | struct e1000_hw *hw = &adapter->hw; | |
749ab2cd | 3024 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
3025 | int err; |
3026 | int i; | |
3027 | ||
3028 | /* disallow open during test */ | |
749ab2cd YZ |
3029 | if (test_bit(__IGB_TESTING, &adapter->state)) { |
3030 | WARN_ON(resuming); | |
9d5c8243 | 3031 | return -EBUSY; |
749ab2cd YZ |
3032 | } |
3033 | ||
3034 | if (!resuming) | |
3035 | pm_runtime_get_sync(&pdev->dev); | |
9d5c8243 | 3036 | |
b168dfc5 JB |
3037 | netif_carrier_off(netdev); |
3038 | ||
9d5c8243 AK |
3039 | /* allocate transmit descriptors */ |
3040 | err = igb_setup_all_tx_resources(adapter); | |
3041 | if (err) | |
3042 | goto err_setup_tx; | |
3043 | ||
3044 | /* allocate receive descriptors */ | |
3045 | err = igb_setup_all_rx_resources(adapter); | |
3046 | if (err) | |
3047 | goto err_setup_rx; | |
3048 | ||
88a268c1 | 3049 | igb_power_up_link(adapter); |
9d5c8243 | 3050 | |
9d5c8243 AK |
3051 | /* before we allocate an interrupt, we must be ready to handle it. |
3052 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt | |
3053 | * as soon as we call pci_request_irq, so we have to setup our | |
b980ac18 JK |
3054 | * clean_rx handler before we do so. |
3055 | */ | |
9d5c8243 AK |
3056 | igb_configure(adapter); |
3057 | ||
3058 | err = igb_request_irq(adapter); | |
3059 | if (err) | |
3060 | goto err_req_irq; | |
3061 | ||
0c2cc02e AD |
3062 | /* Notify the stack of the actual queue counts. */ |
3063 | err = netif_set_real_num_tx_queues(adapter->netdev, | |
3064 | adapter->num_tx_queues); | |
3065 | if (err) | |
3066 | goto err_set_queues; | |
3067 | ||
3068 | err = netif_set_real_num_rx_queues(adapter->netdev, | |
3069 | adapter->num_rx_queues); | |
3070 | if (err) | |
3071 | goto err_set_queues; | |
3072 | ||
9d5c8243 AK |
3073 | /* From here on the code is the same as igb_up() */ |
3074 | clear_bit(__IGB_DOWN, &adapter->state); | |
3075 | ||
0d1ae7f4 AD |
3076 | for (i = 0; i < adapter->num_q_vectors; i++) |
3077 | napi_enable(&(adapter->q_vector[i]->napi)); | |
9d5c8243 AK |
3078 | |
3079 | /* Clear any pending interrupts. */ | |
3080 | rd32(E1000_ICR); | |
844290e5 PW |
3081 | |
3082 | igb_irq_enable(adapter); | |
3083 | ||
d4960307 AD |
3084 | /* notify VFs that reset has been completed */ |
3085 | if (adapter->vfs_allocated_count) { | |
3086 | u32 reg_data = rd32(E1000_CTRL_EXT); | |
9005df38 | 3087 | |
d4960307 AD |
3088 | reg_data |= E1000_CTRL_EXT_PFRSTD; |
3089 | wr32(E1000_CTRL_EXT, reg_data); | |
3090 | } | |
3091 | ||
d55b53ff JK |
3092 | netif_tx_start_all_queues(netdev); |
3093 | ||
749ab2cd YZ |
3094 | if (!resuming) |
3095 | pm_runtime_put(&pdev->dev); | |
3096 | ||
25568a53 AD |
3097 | /* start the watchdog. */ |
3098 | hw->mac.get_link_status = 1; | |
3099 | schedule_work(&adapter->watchdog_task); | |
9d5c8243 AK |
3100 | |
3101 | return 0; | |
3102 | ||
0c2cc02e AD |
3103 | err_set_queues: |
3104 | igb_free_irq(adapter); | |
9d5c8243 AK |
3105 | err_req_irq: |
3106 | igb_release_hw_control(adapter); | |
88a268c1 | 3107 | igb_power_down_link(adapter); |
9d5c8243 AK |
3108 | igb_free_all_rx_resources(adapter); |
3109 | err_setup_rx: | |
3110 | igb_free_all_tx_resources(adapter); | |
3111 | err_setup_tx: | |
3112 | igb_reset(adapter); | |
749ab2cd YZ |
3113 | if (!resuming) |
3114 | pm_runtime_put(&pdev->dev); | |
9d5c8243 AK |
3115 | |
3116 | return err; | |
3117 | } | |
3118 | ||
749ab2cd YZ |
3119 | static int igb_open(struct net_device *netdev) |
3120 | { | |
3121 | return __igb_open(netdev, false); | |
3122 | } | |
3123 | ||
9d5c8243 | 3124 | /** |
b980ac18 JK |
3125 | * igb_close - Disables a network interface |
3126 | * @netdev: network interface device structure | |
9d5c8243 | 3127 | * |
b980ac18 | 3128 | * Returns 0, this is not allowed to fail |
9d5c8243 | 3129 | * |
b980ac18 JK |
3130 | * The close entry point is called when an interface is de-activated |
3131 | * by the OS. The hardware is still under the driver's control, but | |
3132 | * needs to be disabled. A global MAC reset is issued to stop the | |
3133 | * hardware, and all transmit and receive resources are freed. | |
9d5c8243 | 3134 | **/ |
749ab2cd | 3135 | static int __igb_close(struct net_device *netdev, bool suspending) |
9d5c8243 AK |
3136 | { |
3137 | struct igb_adapter *adapter = netdev_priv(netdev); | |
749ab2cd | 3138 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
3139 | |
3140 | WARN_ON(test_bit(__IGB_RESETTING, &adapter->state)); | |
9d5c8243 | 3141 | |
749ab2cd YZ |
3142 | if (!suspending) |
3143 | pm_runtime_get_sync(&pdev->dev); | |
3144 | ||
3145 | igb_down(adapter); | |
9d5c8243 AK |
3146 | igb_free_irq(adapter); |
3147 | ||
3148 | igb_free_all_tx_resources(adapter); | |
3149 | igb_free_all_rx_resources(adapter); | |
3150 | ||
749ab2cd YZ |
3151 | if (!suspending) |
3152 | pm_runtime_put_sync(&pdev->dev); | |
9d5c8243 AK |
3153 | return 0; |
3154 | } | |
3155 | ||
749ab2cd YZ |
3156 | static int igb_close(struct net_device *netdev) |
3157 | { | |
3158 | return __igb_close(netdev, false); | |
3159 | } | |
3160 | ||
9d5c8243 | 3161 | /** |
b980ac18 JK |
3162 | * igb_setup_tx_resources - allocate Tx resources (Descriptors) |
3163 | * @tx_ring: tx descriptor ring (for a specific queue) to setup | |
9d5c8243 | 3164 | * |
b980ac18 | 3165 | * Return 0 on success, negative on failure |
9d5c8243 | 3166 | **/ |
80785298 | 3167 | int igb_setup_tx_resources(struct igb_ring *tx_ring) |
9d5c8243 | 3168 | { |
59d71989 | 3169 | struct device *dev = tx_ring->dev; |
9d5c8243 AK |
3170 | int size; |
3171 | ||
06034649 | 3172 | size = sizeof(struct igb_tx_buffer) * tx_ring->count; |
f33005a6 AD |
3173 | |
3174 | tx_ring->tx_buffer_info = vzalloc(size); | |
06034649 | 3175 | if (!tx_ring->tx_buffer_info) |
9d5c8243 | 3176 | goto err; |
9d5c8243 AK |
3177 | |
3178 | /* round up to nearest 4K */ | |
85e8d004 | 3179 | tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc); |
9d5c8243 AK |
3180 | tx_ring->size = ALIGN(tx_ring->size, 4096); |
3181 | ||
5536d210 AD |
3182 | tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size, |
3183 | &tx_ring->dma, GFP_KERNEL); | |
9d5c8243 AK |
3184 | if (!tx_ring->desc) |
3185 | goto err; | |
3186 | ||
9d5c8243 AK |
3187 | tx_ring->next_to_use = 0; |
3188 | tx_ring->next_to_clean = 0; | |
81c2fc22 | 3189 | |
9d5c8243 AK |
3190 | return 0; |
3191 | ||
3192 | err: | |
06034649 | 3193 | vfree(tx_ring->tx_buffer_info); |
f33005a6 AD |
3194 | tx_ring->tx_buffer_info = NULL; |
3195 | dev_err(dev, "Unable to allocate memory for the Tx descriptor ring\n"); | |
9d5c8243 AK |
3196 | return -ENOMEM; |
3197 | } | |
3198 | ||
3199 | /** | |
b980ac18 JK |
3200 | * igb_setup_all_tx_resources - wrapper to allocate Tx resources |
3201 | * (Descriptors) for all queues | |
3202 | * @adapter: board private structure | |
9d5c8243 | 3203 | * |
b980ac18 | 3204 | * Return 0 on success, negative on failure |
9d5c8243 AK |
3205 | **/ |
3206 | static int igb_setup_all_tx_resources(struct igb_adapter *adapter) | |
3207 | { | |
439705e1 | 3208 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
3209 | int i, err = 0; |
3210 | ||
3211 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
3025a446 | 3212 | err = igb_setup_tx_resources(adapter->tx_ring[i]); |
9d5c8243 | 3213 | if (err) { |
439705e1 | 3214 | dev_err(&pdev->dev, |
9d5c8243 AK |
3215 | "Allocation for Tx Queue %u failed\n", i); |
3216 | for (i--; i >= 0; i--) | |
3025a446 | 3217 | igb_free_tx_resources(adapter->tx_ring[i]); |
9d5c8243 AK |
3218 | break; |
3219 | } | |
3220 | } | |
3221 | ||
3222 | return err; | |
3223 | } | |
3224 | ||
3225 | /** | |
b980ac18 JK |
3226 | * igb_setup_tctl - configure the transmit control registers |
3227 | * @adapter: Board private structure | |
9d5c8243 | 3228 | **/ |
d7ee5b3a | 3229 | void igb_setup_tctl(struct igb_adapter *adapter) |
9d5c8243 | 3230 | { |
9d5c8243 AK |
3231 | struct e1000_hw *hw = &adapter->hw; |
3232 | u32 tctl; | |
9d5c8243 | 3233 | |
85b430b4 AD |
3234 | /* disable queue 0 which is enabled by default on 82575 and 82576 */ |
3235 | wr32(E1000_TXDCTL(0), 0); | |
9d5c8243 AK |
3236 | |
3237 | /* Program the Transmit Control Register */ | |
9d5c8243 AK |
3238 | tctl = rd32(E1000_TCTL); |
3239 | tctl &= ~E1000_TCTL_CT; | |
3240 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | | |
3241 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); | |
3242 | ||
3243 | igb_config_collision_dist(hw); | |
3244 | ||
9d5c8243 AK |
3245 | /* Enable transmits */ |
3246 | tctl |= E1000_TCTL_EN; | |
3247 | ||
3248 | wr32(E1000_TCTL, tctl); | |
3249 | } | |
3250 | ||
85b430b4 | 3251 | /** |
b980ac18 JK |
3252 | * igb_configure_tx_ring - Configure transmit ring after Reset |
3253 | * @adapter: board private structure | |
3254 | * @ring: tx ring to configure | |
85b430b4 | 3255 | * |
b980ac18 | 3256 | * Configure a transmit ring after a reset. |
85b430b4 | 3257 | **/ |
d7ee5b3a | 3258 | void igb_configure_tx_ring(struct igb_adapter *adapter, |
9005df38 | 3259 | struct igb_ring *ring) |
85b430b4 AD |
3260 | { |
3261 | struct e1000_hw *hw = &adapter->hw; | |
a74420e0 | 3262 | u32 txdctl = 0; |
85b430b4 AD |
3263 | u64 tdba = ring->dma; |
3264 | int reg_idx = ring->reg_idx; | |
3265 | ||
3266 | /* disable the queue */ | |
a74420e0 | 3267 | wr32(E1000_TXDCTL(reg_idx), 0); |
85b430b4 AD |
3268 | wrfl(); |
3269 | mdelay(10); | |
3270 | ||
3271 | wr32(E1000_TDLEN(reg_idx), | |
b980ac18 | 3272 | ring->count * sizeof(union e1000_adv_tx_desc)); |
85b430b4 | 3273 | wr32(E1000_TDBAL(reg_idx), |
b980ac18 | 3274 | tdba & 0x00000000ffffffffULL); |
85b430b4 AD |
3275 | wr32(E1000_TDBAH(reg_idx), tdba >> 32); |
3276 | ||
fce99e34 | 3277 | ring->tail = hw->hw_addr + E1000_TDT(reg_idx); |
a74420e0 | 3278 | wr32(E1000_TDH(reg_idx), 0); |
fce99e34 | 3279 | writel(0, ring->tail); |
85b430b4 AD |
3280 | |
3281 | txdctl |= IGB_TX_PTHRESH; | |
3282 | txdctl |= IGB_TX_HTHRESH << 8; | |
3283 | txdctl |= IGB_TX_WTHRESH << 16; | |
3284 | ||
3285 | txdctl |= E1000_TXDCTL_QUEUE_ENABLE; | |
3286 | wr32(E1000_TXDCTL(reg_idx), txdctl); | |
3287 | } | |
3288 | ||
3289 | /** | |
b980ac18 JK |
3290 | * igb_configure_tx - Configure transmit Unit after Reset |
3291 | * @adapter: board private structure | |
85b430b4 | 3292 | * |
b980ac18 | 3293 | * Configure the Tx unit of the MAC after a reset. |
85b430b4 AD |
3294 | **/ |
3295 | static void igb_configure_tx(struct igb_adapter *adapter) | |
3296 | { | |
3297 | int i; | |
3298 | ||
3299 | for (i = 0; i < adapter->num_tx_queues; i++) | |
3025a446 | 3300 | igb_configure_tx_ring(adapter, adapter->tx_ring[i]); |
85b430b4 AD |
3301 | } |
3302 | ||
9d5c8243 | 3303 | /** |
b980ac18 JK |
3304 | * igb_setup_rx_resources - allocate Rx resources (Descriptors) |
3305 | * @rx_ring: Rx descriptor ring (for a specific queue) to setup | |
9d5c8243 | 3306 | * |
b980ac18 | 3307 | * Returns 0 on success, negative on failure |
9d5c8243 | 3308 | **/ |
80785298 | 3309 | int igb_setup_rx_resources(struct igb_ring *rx_ring) |
9d5c8243 | 3310 | { |
59d71989 | 3311 | struct device *dev = rx_ring->dev; |
f33005a6 | 3312 | int size; |
9d5c8243 | 3313 | |
06034649 | 3314 | size = sizeof(struct igb_rx_buffer) * rx_ring->count; |
f33005a6 AD |
3315 | |
3316 | rx_ring->rx_buffer_info = vzalloc(size); | |
06034649 | 3317 | if (!rx_ring->rx_buffer_info) |
9d5c8243 | 3318 | goto err; |
9d5c8243 | 3319 | |
9d5c8243 | 3320 | /* Round up to nearest 4K */ |
f33005a6 | 3321 | rx_ring->size = rx_ring->count * sizeof(union e1000_adv_rx_desc); |
9d5c8243 AK |
3322 | rx_ring->size = ALIGN(rx_ring->size, 4096); |
3323 | ||
5536d210 AD |
3324 | rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size, |
3325 | &rx_ring->dma, GFP_KERNEL); | |
9d5c8243 AK |
3326 | if (!rx_ring->desc) |
3327 | goto err; | |
3328 | ||
cbc8e55f | 3329 | rx_ring->next_to_alloc = 0; |
9d5c8243 AK |
3330 | rx_ring->next_to_clean = 0; |
3331 | rx_ring->next_to_use = 0; | |
9d5c8243 | 3332 | |
9d5c8243 AK |
3333 | return 0; |
3334 | ||
3335 | err: | |
06034649 AD |
3336 | vfree(rx_ring->rx_buffer_info); |
3337 | rx_ring->rx_buffer_info = NULL; | |
f33005a6 | 3338 | dev_err(dev, "Unable to allocate memory for the Rx descriptor ring\n"); |
9d5c8243 AK |
3339 | return -ENOMEM; |
3340 | } | |
3341 | ||
3342 | /** | |
b980ac18 JK |
3343 | * igb_setup_all_rx_resources - wrapper to allocate Rx resources |
3344 | * (Descriptors) for all queues | |
3345 | * @adapter: board private structure | |
9d5c8243 | 3346 | * |
b980ac18 | 3347 | * Return 0 on success, negative on failure |
9d5c8243 AK |
3348 | **/ |
3349 | static int igb_setup_all_rx_resources(struct igb_adapter *adapter) | |
3350 | { | |
439705e1 | 3351 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
3352 | int i, err = 0; |
3353 | ||
3354 | for (i = 0; i < adapter->num_rx_queues; i++) { | |
3025a446 | 3355 | err = igb_setup_rx_resources(adapter->rx_ring[i]); |
9d5c8243 | 3356 | if (err) { |
439705e1 | 3357 | dev_err(&pdev->dev, |
9d5c8243 AK |
3358 | "Allocation for Rx Queue %u failed\n", i); |
3359 | for (i--; i >= 0; i--) | |
3025a446 | 3360 | igb_free_rx_resources(adapter->rx_ring[i]); |
9d5c8243 AK |
3361 | break; |
3362 | } | |
3363 | } | |
3364 | ||
3365 | return err; | |
3366 | } | |
3367 | ||
06cf2666 | 3368 | /** |
b980ac18 JK |
3369 | * igb_setup_mrqc - configure the multiple receive queue control registers |
3370 | * @adapter: Board private structure | |
06cf2666 AD |
3371 | **/ |
3372 | static void igb_setup_mrqc(struct igb_adapter *adapter) | |
3373 | { | |
3374 | struct e1000_hw *hw = &adapter->hw; | |
3375 | u32 mrqc, rxcsum; | |
ed12cc9a | 3376 | u32 j, num_rx_queues; |
eb31f849 | 3377 | u32 rss_key[10]; |
06cf2666 | 3378 | |
eb31f849 | 3379 | netdev_rss_key_fill(rss_key, sizeof(rss_key)); |
a57fe23e | 3380 | for (j = 0; j < 10; j++) |
eb31f849 | 3381 | wr32(E1000_RSSRK(j), rss_key[j]); |
06cf2666 | 3382 | |
a99955fc | 3383 | num_rx_queues = adapter->rss_queues; |
06cf2666 | 3384 | |
797fd4be | 3385 | switch (hw->mac.type) { |
797fd4be AD |
3386 | case e1000_82576: |
3387 | /* 82576 supports 2 RSS queues for SR-IOV */ | |
ed12cc9a | 3388 | if (adapter->vfs_allocated_count) |
06cf2666 | 3389 | num_rx_queues = 2; |
797fd4be AD |
3390 | break; |
3391 | default: | |
3392 | break; | |
06cf2666 AD |
3393 | } |
3394 | ||
ed12cc9a LMV |
3395 | if (adapter->rss_indir_tbl_init != num_rx_queues) { |
3396 | for (j = 0; j < IGB_RETA_SIZE; j++) | |
c502ea2e CW |
3397 | adapter->rss_indir_tbl[j] = |
3398 | (j * num_rx_queues) / IGB_RETA_SIZE; | |
ed12cc9a | 3399 | adapter->rss_indir_tbl_init = num_rx_queues; |
06cf2666 | 3400 | } |
ed12cc9a | 3401 | igb_write_rss_indir_tbl(adapter); |
06cf2666 | 3402 | |
b980ac18 | 3403 | /* Disable raw packet checksumming so that RSS hash is placed in |
06cf2666 AD |
3404 | * descriptor on writeback. No need to enable TCP/UDP/IP checksum |
3405 | * offloads as they are enabled by default | |
3406 | */ | |
3407 | rxcsum = rd32(E1000_RXCSUM); | |
3408 | rxcsum |= E1000_RXCSUM_PCSD; | |
3409 | ||
3410 | if (adapter->hw.mac.type >= e1000_82576) | |
3411 | /* Enable Receive Checksum Offload for SCTP */ | |
3412 | rxcsum |= E1000_RXCSUM_CRCOFL; | |
3413 | ||
3414 | /* Don't need to set TUOFL or IPOFL, they default to 1 */ | |
3415 | wr32(E1000_RXCSUM, rxcsum); | |
f96a8a0b | 3416 | |
039454a8 AA |
3417 | /* Generate RSS hash based on packet types, TCP/UDP |
3418 | * port numbers and/or IPv4/v6 src and dst addresses | |
3419 | */ | |
f96a8a0b CW |
3420 | mrqc = E1000_MRQC_RSS_FIELD_IPV4 | |
3421 | E1000_MRQC_RSS_FIELD_IPV4_TCP | | |
3422 | E1000_MRQC_RSS_FIELD_IPV6 | | |
3423 | E1000_MRQC_RSS_FIELD_IPV6_TCP | | |
3424 | E1000_MRQC_RSS_FIELD_IPV6_TCP_EX; | |
06cf2666 | 3425 | |
039454a8 AA |
3426 | if (adapter->flags & IGB_FLAG_RSS_FIELD_IPV4_UDP) |
3427 | mrqc |= E1000_MRQC_RSS_FIELD_IPV4_UDP; | |
3428 | if (adapter->flags & IGB_FLAG_RSS_FIELD_IPV6_UDP) | |
3429 | mrqc |= E1000_MRQC_RSS_FIELD_IPV6_UDP; | |
3430 | ||
06cf2666 AD |
3431 | /* If VMDq is enabled then we set the appropriate mode for that, else |
3432 | * we default to RSS so that an RSS hash is calculated per packet even | |
b980ac18 JK |
3433 | * if we are only using one queue |
3434 | */ | |
06cf2666 AD |
3435 | if (adapter->vfs_allocated_count) { |
3436 | if (hw->mac.type > e1000_82575) { | |
3437 | /* Set the default pool for the PF's first queue */ | |
3438 | u32 vtctl = rd32(E1000_VT_CTL); | |
9005df38 | 3439 | |
06cf2666 AD |
3440 | vtctl &= ~(E1000_VT_CTL_DEFAULT_POOL_MASK | |
3441 | E1000_VT_CTL_DISABLE_DEF_POOL); | |
3442 | vtctl |= adapter->vfs_allocated_count << | |
3443 | E1000_VT_CTL_DEFAULT_POOL_SHIFT; | |
3444 | wr32(E1000_VT_CTL, vtctl); | |
3445 | } | |
a99955fc | 3446 | if (adapter->rss_queues > 1) |
f96a8a0b | 3447 | mrqc |= E1000_MRQC_ENABLE_VMDQ_RSS_2Q; |
06cf2666 | 3448 | else |
f96a8a0b | 3449 | mrqc |= E1000_MRQC_ENABLE_VMDQ; |
06cf2666 | 3450 | } else { |
f96a8a0b CW |
3451 | if (hw->mac.type != e1000_i211) |
3452 | mrqc |= E1000_MRQC_ENABLE_RSS_4Q; | |
06cf2666 AD |
3453 | } |
3454 | igb_vmm_control(adapter); | |
3455 | ||
06cf2666 AD |
3456 | wr32(E1000_MRQC, mrqc); |
3457 | } | |
3458 | ||
9d5c8243 | 3459 | /** |
b980ac18 JK |
3460 | * igb_setup_rctl - configure the receive control registers |
3461 | * @adapter: Board private structure | |
9d5c8243 | 3462 | **/ |
d7ee5b3a | 3463 | void igb_setup_rctl(struct igb_adapter *adapter) |
9d5c8243 AK |
3464 | { |
3465 | struct e1000_hw *hw = &adapter->hw; | |
3466 | u32 rctl; | |
9d5c8243 AK |
3467 | |
3468 | rctl = rd32(E1000_RCTL); | |
3469 | ||
3470 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
69d728ba | 3471 | rctl &= ~(E1000_RCTL_LBM_TCVR | E1000_RCTL_LBM_MAC); |
9d5c8243 | 3472 | |
69d728ba | 3473 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_RDMTS_HALF | |
28b0759c | 3474 | (hw->mac.mc_filter_type << E1000_RCTL_MO_SHIFT); |
9d5c8243 | 3475 | |
b980ac18 | 3476 | /* enable stripping of CRC. It's unlikely this will break BMC |
87cb7e8c AK |
3477 | * redirection as it did with e1000. Newer features require |
3478 | * that the HW strips the CRC. | |
73cd78f1 | 3479 | */ |
87cb7e8c | 3480 | rctl |= E1000_RCTL_SECRC; |
9d5c8243 | 3481 | |
559e9c49 | 3482 | /* disable store bad packets and clear size bits. */ |
ec54d7d6 | 3483 | rctl &= ~(E1000_RCTL_SBP | E1000_RCTL_SZ_256); |
9d5c8243 | 3484 | |
6ec43fe6 AD |
3485 | /* enable LPE to prevent packets larger than max_frame_size */ |
3486 | rctl |= E1000_RCTL_LPE; | |
9d5c8243 | 3487 | |
952f72a8 AD |
3488 | /* disable queue 0 to prevent tail write w/o re-config */ |
3489 | wr32(E1000_RXDCTL(0), 0); | |
9d5c8243 | 3490 | |
e1739522 AD |
3491 | /* Attention!!! For SR-IOV PF driver operations you must enable |
3492 | * queue drop for all VF and PF queues to prevent head of line blocking | |
3493 | * if an un-trusted VF does not provide descriptors to hardware. | |
3494 | */ | |
3495 | if (adapter->vfs_allocated_count) { | |
e1739522 AD |
3496 | /* set all queue drop enable bits */ |
3497 | wr32(E1000_QDE, ALL_QUEUES); | |
e1739522 AD |
3498 | } |
3499 | ||
89eaefb6 BG |
3500 | /* This is useful for sniffing bad packets. */ |
3501 | if (adapter->netdev->features & NETIF_F_RXALL) { | |
3502 | /* UPE and MPE will be handled by normal PROMISC logic | |
b980ac18 JK |
3503 | * in e1000e_set_rx_mode |
3504 | */ | |
89eaefb6 BG |
3505 | rctl |= (E1000_RCTL_SBP | /* Receive bad packets */ |
3506 | E1000_RCTL_BAM | /* RX All Bcast Pkts */ | |
3507 | E1000_RCTL_PMCF); /* RX All MAC Ctrl Pkts */ | |
3508 | ||
3509 | rctl &= ~(E1000_RCTL_VFE | /* Disable VLAN filter */ | |
3510 | E1000_RCTL_DPF | /* Allow filtered pause */ | |
3511 | E1000_RCTL_CFIEN); /* Dis VLAN CFIEN Filter */ | |
3512 | /* Do not mess with E1000_CTRL_VME, it affects transmit as well, | |
3513 | * and that breaks VLANs. | |
3514 | */ | |
3515 | } | |
3516 | ||
9d5c8243 AK |
3517 | wr32(E1000_RCTL, rctl); |
3518 | } | |
3519 | ||
7d5753f0 | 3520 | static inline int igb_set_vf_rlpml(struct igb_adapter *adapter, int size, |
9005df38 | 3521 | int vfn) |
7d5753f0 AD |
3522 | { |
3523 | struct e1000_hw *hw = &adapter->hw; | |
3524 | u32 vmolr; | |
3525 | ||
3526 | /* if it isn't the PF check to see if VFs are enabled and | |
b980ac18 JK |
3527 | * increase the size to support vlan tags |
3528 | */ | |
7d5753f0 AD |
3529 | if (vfn < adapter->vfs_allocated_count && |
3530 | adapter->vf_data[vfn].vlans_enabled) | |
3531 | size += VLAN_TAG_SIZE; | |
3532 | ||
3533 | vmolr = rd32(E1000_VMOLR(vfn)); | |
3534 | vmolr &= ~E1000_VMOLR_RLPML_MASK; | |
3535 | vmolr |= size | E1000_VMOLR_LPE; | |
3536 | wr32(E1000_VMOLR(vfn), vmolr); | |
3537 | ||
3538 | return 0; | |
3539 | } | |
3540 | ||
e1739522 | 3541 | /** |
b980ac18 JK |
3542 | * igb_rlpml_set - set maximum receive packet size |
3543 | * @adapter: board private structure | |
e1739522 | 3544 | * |
b980ac18 | 3545 | * Configure maximum receivable packet size. |
e1739522 AD |
3546 | **/ |
3547 | static void igb_rlpml_set(struct igb_adapter *adapter) | |
3548 | { | |
153285f9 | 3549 | u32 max_frame_size = adapter->max_frame_size; |
e1739522 AD |
3550 | struct e1000_hw *hw = &adapter->hw; |
3551 | u16 pf_id = adapter->vfs_allocated_count; | |
3552 | ||
e1739522 AD |
3553 | if (pf_id) { |
3554 | igb_set_vf_rlpml(adapter, max_frame_size, pf_id); | |
b980ac18 | 3555 | /* If we're in VMDQ or SR-IOV mode, then set global RLPML |
153285f9 AD |
3556 | * to our max jumbo frame size, in case we need to enable |
3557 | * jumbo frames on one of the rings later. | |
3558 | * This will not pass over-length frames into the default | |
3559 | * queue because it's gated by the VMOLR.RLPML. | |
3560 | */ | |
7d5753f0 | 3561 | max_frame_size = MAX_JUMBO_FRAME_SIZE; |
e1739522 AD |
3562 | } |
3563 | ||
3564 | wr32(E1000_RLPML, max_frame_size); | |
3565 | } | |
3566 | ||
8151d294 WM |
3567 | static inline void igb_set_vmolr(struct igb_adapter *adapter, |
3568 | int vfn, bool aupe) | |
7d5753f0 AD |
3569 | { |
3570 | struct e1000_hw *hw = &adapter->hw; | |
3571 | u32 vmolr; | |
3572 | ||
b980ac18 | 3573 | /* This register exists only on 82576 and newer so if we are older then |
7d5753f0 AD |
3574 | * we should exit and do nothing |
3575 | */ | |
3576 | if (hw->mac.type < e1000_82576) | |
3577 | return; | |
3578 | ||
3579 | vmolr = rd32(E1000_VMOLR(vfn)); | |
b980ac18 | 3580 | vmolr |= E1000_VMOLR_STRVLAN; /* Strip vlan tags */ |
dc1edc67 SA |
3581 | if (hw->mac.type == e1000_i350) { |
3582 | u32 dvmolr; | |
3583 | ||
3584 | dvmolr = rd32(E1000_DVMOLR(vfn)); | |
3585 | dvmolr |= E1000_DVMOLR_STRVLAN; | |
3586 | wr32(E1000_DVMOLR(vfn), dvmolr); | |
3587 | } | |
8151d294 | 3588 | if (aupe) |
b980ac18 | 3589 | vmolr |= E1000_VMOLR_AUPE; /* Accept untagged packets */ |
8151d294 WM |
3590 | else |
3591 | vmolr &= ~(E1000_VMOLR_AUPE); /* Tagged packets ONLY */ | |
7d5753f0 AD |
3592 | |
3593 | /* clear all bits that might not be set */ | |
3594 | vmolr &= ~(E1000_VMOLR_BAM | E1000_VMOLR_RSSE); | |
3595 | ||
a99955fc | 3596 | if (adapter->rss_queues > 1 && vfn == adapter->vfs_allocated_count) |
7d5753f0 | 3597 | vmolr |= E1000_VMOLR_RSSE; /* enable RSS */ |
b980ac18 | 3598 | /* for VMDq only allow the VFs and pool 0 to accept broadcast and |
7d5753f0 AD |
3599 | * multicast packets |
3600 | */ | |
3601 | if (vfn <= adapter->vfs_allocated_count) | |
b980ac18 | 3602 | vmolr |= E1000_VMOLR_BAM; /* Accept broadcast */ |
7d5753f0 AD |
3603 | |
3604 | wr32(E1000_VMOLR(vfn), vmolr); | |
3605 | } | |
3606 | ||
85b430b4 | 3607 | /** |
b980ac18 JK |
3608 | * igb_configure_rx_ring - Configure a receive ring after Reset |
3609 | * @adapter: board private structure | |
3610 | * @ring: receive ring to be configured | |
85b430b4 | 3611 | * |
b980ac18 | 3612 | * Configure the Rx unit of the MAC after a reset. |
85b430b4 | 3613 | **/ |
d7ee5b3a | 3614 | void igb_configure_rx_ring(struct igb_adapter *adapter, |
b980ac18 | 3615 | struct igb_ring *ring) |
85b430b4 AD |
3616 | { |
3617 | struct e1000_hw *hw = &adapter->hw; | |
3618 | u64 rdba = ring->dma; | |
3619 | int reg_idx = ring->reg_idx; | |
a74420e0 | 3620 | u32 srrctl = 0, rxdctl = 0; |
85b430b4 AD |
3621 | |
3622 | /* disable the queue */ | |
a74420e0 | 3623 | wr32(E1000_RXDCTL(reg_idx), 0); |
85b430b4 AD |
3624 | |
3625 | /* Set DMA base address registers */ | |
3626 | wr32(E1000_RDBAL(reg_idx), | |
3627 | rdba & 0x00000000ffffffffULL); | |
3628 | wr32(E1000_RDBAH(reg_idx), rdba >> 32); | |
3629 | wr32(E1000_RDLEN(reg_idx), | |
b980ac18 | 3630 | ring->count * sizeof(union e1000_adv_rx_desc)); |
85b430b4 AD |
3631 | |
3632 | /* initialize head and tail */ | |
fce99e34 | 3633 | ring->tail = hw->hw_addr + E1000_RDT(reg_idx); |
a74420e0 | 3634 | wr32(E1000_RDH(reg_idx), 0); |
fce99e34 | 3635 | writel(0, ring->tail); |
85b430b4 | 3636 | |
952f72a8 | 3637 | /* set descriptor configuration */ |
44390ca6 | 3638 | srrctl = IGB_RX_HDR_LEN << E1000_SRRCTL_BSIZEHDRSIZE_SHIFT; |
de78d1f9 | 3639 | srrctl |= IGB_RX_BUFSZ >> E1000_SRRCTL_BSIZEPKT_SHIFT; |
1a1c225b | 3640 | srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF; |
06218a8d | 3641 | if (hw->mac.type >= e1000_82580) |
757b77e2 | 3642 | srrctl |= E1000_SRRCTL_TIMESTAMP; |
e6bdb6fe NN |
3643 | /* Only set Drop Enable if we are supporting multiple queues */ |
3644 | if (adapter->vfs_allocated_count || adapter->num_rx_queues > 1) | |
3645 | srrctl |= E1000_SRRCTL_DROP_EN; | |
952f72a8 AD |
3646 | |
3647 | wr32(E1000_SRRCTL(reg_idx), srrctl); | |
3648 | ||
7d5753f0 | 3649 | /* set filtering for VMDQ pools */ |
8151d294 | 3650 | igb_set_vmolr(adapter, reg_idx & 0x7, true); |
7d5753f0 | 3651 | |
85b430b4 AD |
3652 | rxdctl |= IGB_RX_PTHRESH; |
3653 | rxdctl |= IGB_RX_HTHRESH << 8; | |
3654 | rxdctl |= IGB_RX_WTHRESH << 16; | |
a74420e0 AD |
3655 | |
3656 | /* enable receive descriptor fetching */ | |
3657 | rxdctl |= E1000_RXDCTL_QUEUE_ENABLE; | |
85b430b4 AD |
3658 | wr32(E1000_RXDCTL(reg_idx), rxdctl); |
3659 | } | |
3660 | ||
9d5c8243 | 3661 | /** |
b980ac18 JK |
3662 | * igb_configure_rx - Configure receive Unit after Reset |
3663 | * @adapter: board private structure | |
9d5c8243 | 3664 | * |
b980ac18 | 3665 | * Configure the Rx unit of the MAC after a reset. |
9d5c8243 AK |
3666 | **/ |
3667 | static void igb_configure_rx(struct igb_adapter *adapter) | |
3668 | { | |
9107584e | 3669 | int i; |
9d5c8243 | 3670 | |
68d480c4 AD |
3671 | /* set UTA to appropriate mode */ |
3672 | igb_set_uta(adapter); | |
3673 | ||
26ad9178 AD |
3674 | /* set the correct pool for the PF default MAC address in entry 0 */ |
3675 | igb_rar_set_qsel(adapter, adapter->hw.mac.addr, 0, | |
b980ac18 | 3676 | adapter->vfs_allocated_count); |
26ad9178 | 3677 | |
06cf2666 | 3678 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
b980ac18 JK |
3679 | * the Base and Length of the Rx Descriptor Ring |
3680 | */ | |
f9d40f6a AD |
3681 | for (i = 0; i < adapter->num_rx_queues; i++) |
3682 | igb_configure_rx_ring(adapter, adapter->rx_ring[i]); | |
9d5c8243 AK |
3683 | } |
3684 | ||
3685 | /** | |
b980ac18 JK |
3686 | * igb_free_tx_resources - Free Tx Resources per Queue |
3687 | * @tx_ring: Tx descriptor ring for a specific queue | |
9d5c8243 | 3688 | * |
b980ac18 | 3689 | * Free all transmit software resources |
9d5c8243 | 3690 | **/ |
68fd9910 | 3691 | void igb_free_tx_resources(struct igb_ring *tx_ring) |
9d5c8243 | 3692 | { |
3b644cf6 | 3693 | igb_clean_tx_ring(tx_ring); |
9d5c8243 | 3694 | |
06034649 AD |
3695 | vfree(tx_ring->tx_buffer_info); |
3696 | tx_ring->tx_buffer_info = NULL; | |
9d5c8243 | 3697 | |
439705e1 AD |
3698 | /* if not set, then don't free */ |
3699 | if (!tx_ring->desc) | |
3700 | return; | |
3701 | ||
59d71989 AD |
3702 | dma_free_coherent(tx_ring->dev, tx_ring->size, |
3703 | tx_ring->desc, tx_ring->dma); | |
9d5c8243 AK |
3704 | |
3705 | tx_ring->desc = NULL; | |
3706 | } | |
3707 | ||
3708 | /** | |
b980ac18 JK |
3709 | * igb_free_all_tx_resources - Free Tx Resources for All Queues |
3710 | * @adapter: board private structure | |
9d5c8243 | 3711 | * |
b980ac18 | 3712 | * Free all transmit software resources |
9d5c8243 AK |
3713 | **/ |
3714 | static void igb_free_all_tx_resources(struct igb_adapter *adapter) | |
3715 | { | |
3716 | int i; | |
3717 | ||
3718 | for (i = 0; i < adapter->num_tx_queues; i++) | |
17a402a0 CW |
3719 | if (adapter->tx_ring[i]) |
3720 | igb_free_tx_resources(adapter->tx_ring[i]); | |
9d5c8243 AK |
3721 | } |
3722 | ||
ebe42d16 AD |
3723 | void igb_unmap_and_free_tx_resource(struct igb_ring *ring, |
3724 | struct igb_tx_buffer *tx_buffer) | |
3725 | { | |
3726 | if (tx_buffer->skb) { | |
3727 | dev_kfree_skb_any(tx_buffer->skb); | |
c9f14bf3 | 3728 | if (dma_unmap_len(tx_buffer, len)) |
ebe42d16 | 3729 | dma_unmap_single(ring->dev, |
c9f14bf3 AD |
3730 | dma_unmap_addr(tx_buffer, dma), |
3731 | dma_unmap_len(tx_buffer, len), | |
ebe42d16 | 3732 | DMA_TO_DEVICE); |
c9f14bf3 | 3733 | } else if (dma_unmap_len(tx_buffer, len)) { |
ebe42d16 | 3734 | dma_unmap_page(ring->dev, |
c9f14bf3 AD |
3735 | dma_unmap_addr(tx_buffer, dma), |
3736 | dma_unmap_len(tx_buffer, len), | |
ebe42d16 AD |
3737 | DMA_TO_DEVICE); |
3738 | } | |
3739 | tx_buffer->next_to_watch = NULL; | |
3740 | tx_buffer->skb = NULL; | |
c9f14bf3 | 3741 | dma_unmap_len_set(tx_buffer, len, 0); |
ebe42d16 | 3742 | /* buffer_info must be completely set up in the transmit path */ |
9d5c8243 AK |
3743 | } |
3744 | ||
3745 | /** | |
b980ac18 JK |
3746 | * igb_clean_tx_ring - Free Tx Buffers |
3747 | * @tx_ring: ring to be cleaned | |
9d5c8243 | 3748 | **/ |
3b644cf6 | 3749 | static void igb_clean_tx_ring(struct igb_ring *tx_ring) |
9d5c8243 | 3750 | { |
06034649 | 3751 | struct igb_tx_buffer *buffer_info; |
9d5c8243 | 3752 | unsigned long size; |
6ad4edfc | 3753 | u16 i; |
9d5c8243 | 3754 | |
06034649 | 3755 | if (!tx_ring->tx_buffer_info) |
9d5c8243 AK |
3756 | return; |
3757 | /* Free all the Tx ring sk_buffs */ | |
3758 | ||
3759 | for (i = 0; i < tx_ring->count; i++) { | |
06034649 | 3760 | buffer_info = &tx_ring->tx_buffer_info[i]; |
80785298 | 3761 | igb_unmap_and_free_tx_resource(tx_ring, buffer_info); |
9d5c8243 AK |
3762 | } |
3763 | ||
dad8a3b3 JF |
3764 | netdev_tx_reset_queue(txring_txq(tx_ring)); |
3765 | ||
06034649 AD |
3766 | size = sizeof(struct igb_tx_buffer) * tx_ring->count; |
3767 | memset(tx_ring->tx_buffer_info, 0, size); | |
9d5c8243 AK |
3768 | |
3769 | /* Zero out the descriptor ring */ | |
9d5c8243 AK |
3770 | memset(tx_ring->desc, 0, tx_ring->size); |
3771 | ||
3772 | tx_ring->next_to_use = 0; | |
3773 | tx_ring->next_to_clean = 0; | |
9d5c8243 AK |
3774 | } |
3775 | ||
3776 | /** | |
b980ac18 JK |
3777 | * igb_clean_all_tx_rings - Free Tx Buffers for all queues |
3778 | * @adapter: board private structure | |
9d5c8243 AK |
3779 | **/ |
3780 | static void igb_clean_all_tx_rings(struct igb_adapter *adapter) | |
3781 | { | |
3782 | int i; | |
3783 | ||
3784 | for (i = 0; i < adapter->num_tx_queues; i++) | |
17a402a0 CW |
3785 | if (adapter->tx_ring[i]) |
3786 | igb_clean_tx_ring(adapter->tx_ring[i]); | |
9d5c8243 AK |
3787 | } |
3788 | ||
3789 | /** | |
b980ac18 JK |
3790 | * igb_free_rx_resources - Free Rx Resources |
3791 | * @rx_ring: ring to clean the resources from | |
9d5c8243 | 3792 | * |
b980ac18 | 3793 | * Free all receive software resources |
9d5c8243 | 3794 | **/ |
68fd9910 | 3795 | void igb_free_rx_resources(struct igb_ring *rx_ring) |
9d5c8243 | 3796 | { |
3b644cf6 | 3797 | igb_clean_rx_ring(rx_ring); |
9d5c8243 | 3798 | |
06034649 AD |
3799 | vfree(rx_ring->rx_buffer_info); |
3800 | rx_ring->rx_buffer_info = NULL; | |
9d5c8243 | 3801 | |
439705e1 AD |
3802 | /* if not set, then don't free */ |
3803 | if (!rx_ring->desc) | |
3804 | return; | |
3805 | ||
59d71989 AD |
3806 | dma_free_coherent(rx_ring->dev, rx_ring->size, |
3807 | rx_ring->desc, rx_ring->dma); | |
9d5c8243 AK |
3808 | |
3809 | rx_ring->desc = NULL; | |
3810 | } | |
3811 | ||
3812 | /** | |
b980ac18 JK |
3813 | * igb_free_all_rx_resources - Free Rx Resources for All Queues |
3814 | * @adapter: board private structure | |
9d5c8243 | 3815 | * |
b980ac18 | 3816 | * Free all receive software resources |
9d5c8243 AK |
3817 | **/ |
3818 | static void igb_free_all_rx_resources(struct igb_adapter *adapter) | |
3819 | { | |
3820 | int i; | |
3821 | ||
3822 | for (i = 0; i < adapter->num_rx_queues; i++) | |
17a402a0 CW |
3823 | if (adapter->rx_ring[i]) |
3824 | igb_free_rx_resources(adapter->rx_ring[i]); | |
9d5c8243 AK |
3825 | } |
3826 | ||
3827 | /** | |
b980ac18 JK |
3828 | * igb_clean_rx_ring - Free Rx Buffers per Queue |
3829 | * @rx_ring: ring to free buffers from | |
9d5c8243 | 3830 | **/ |
3b644cf6 | 3831 | static void igb_clean_rx_ring(struct igb_ring *rx_ring) |
9d5c8243 | 3832 | { |
9d5c8243 | 3833 | unsigned long size; |
c023cd88 | 3834 | u16 i; |
9d5c8243 | 3835 | |
1a1c225b AD |
3836 | if (rx_ring->skb) |
3837 | dev_kfree_skb(rx_ring->skb); | |
3838 | rx_ring->skb = NULL; | |
3839 | ||
06034649 | 3840 | if (!rx_ring->rx_buffer_info) |
9d5c8243 | 3841 | return; |
439705e1 | 3842 | |
9d5c8243 AK |
3843 | /* Free all the Rx ring sk_buffs */ |
3844 | for (i = 0; i < rx_ring->count; i++) { | |
06034649 | 3845 | struct igb_rx_buffer *buffer_info = &rx_ring->rx_buffer_info[i]; |
9d5c8243 | 3846 | |
cbc8e55f AD |
3847 | if (!buffer_info->page) |
3848 | continue; | |
3849 | ||
3850 | dma_unmap_page(rx_ring->dev, | |
3851 | buffer_info->dma, | |
3852 | PAGE_SIZE, | |
3853 | DMA_FROM_DEVICE); | |
3854 | __free_page(buffer_info->page); | |
3855 | ||
1a1c225b | 3856 | buffer_info->page = NULL; |
9d5c8243 AK |
3857 | } |
3858 | ||
06034649 AD |
3859 | size = sizeof(struct igb_rx_buffer) * rx_ring->count; |
3860 | memset(rx_ring->rx_buffer_info, 0, size); | |
9d5c8243 AK |
3861 | |
3862 | /* Zero out the descriptor ring */ | |
3863 | memset(rx_ring->desc, 0, rx_ring->size); | |
3864 | ||
cbc8e55f | 3865 | rx_ring->next_to_alloc = 0; |
9d5c8243 AK |
3866 | rx_ring->next_to_clean = 0; |
3867 | rx_ring->next_to_use = 0; | |
9d5c8243 AK |
3868 | } |
3869 | ||
3870 | /** | |
b980ac18 JK |
3871 | * igb_clean_all_rx_rings - Free Rx Buffers for all queues |
3872 | * @adapter: board private structure | |
9d5c8243 AK |
3873 | **/ |
3874 | static void igb_clean_all_rx_rings(struct igb_adapter *adapter) | |
3875 | { | |
3876 | int i; | |
3877 | ||
3878 | for (i = 0; i < adapter->num_rx_queues; i++) | |
17a402a0 CW |
3879 | if (adapter->rx_ring[i]) |
3880 | igb_clean_rx_ring(adapter->rx_ring[i]); | |
9d5c8243 AK |
3881 | } |
3882 | ||
3883 | /** | |
b980ac18 JK |
3884 | * igb_set_mac - Change the Ethernet Address of the NIC |
3885 | * @netdev: network interface device structure | |
3886 | * @p: pointer to an address structure | |
9d5c8243 | 3887 | * |
b980ac18 | 3888 | * Returns 0 on success, negative on failure |
9d5c8243 AK |
3889 | **/ |
3890 | static int igb_set_mac(struct net_device *netdev, void *p) | |
3891 | { | |
3892 | struct igb_adapter *adapter = netdev_priv(netdev); | |
28b0759c | 3893 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 AK |
3894 | struct sockaddr *addr = p; |
3895 | ||
3896 | if (!is_valid_ether_addr(addr->sa_data)) | |
3897 | return -EADDRNOTAVAIL; | |
3898 | ||
3899 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
28b0759c | 3900 | memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); |
9d5c8243 | 3901 | |
26ad9178 AD |
3902 | /* set the correct pool for the new PF MAC address in entry 0 */ |
3903 | igb_rar_set_qsel(adapter, hw->mac.addr, 0, | |
b980ac18 | 3904 | adapter->vfs_allocated_count); |
e1739522 | 3905 | |
9d5c8243 AK |
3906 | return 0; |
3907 | } | |
3908 | ||
3909 | /** | |
b980ac18 JK |
3910 | * igb_write_mc_addr_list - write multicast addresses to MTA |
3911 | * @netdev: network interface device structure | |
9d5c8243 | 3912 | * |
b980ac18 JK |
3913 | * Writes multicast address list to the MTA hash table. |
3914 | * Returns: -ENOMEM on failure | |
3915 | * 0 on no addresses written | |
3916 | * X on writing X addresses to MTA | |
9d5c8243 | 3917 | **/ |
68d480c4 | 3918 | static int igb_write_mc_addr_list(struct net_device *netdev) |
9d5c8243 AK |
3919 | { |
3920 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3921 | struct e1000_hw *hw = &adapter->hw; | |
22bedad3 | 3922 | struct netdev_hw_addr *ha; |
68d480c4 | 3923 | u8 *mta_list; |
9d5c8243 AK |
3924 | int i; |
3925 | ||
4cd24eaf | 3926 | if (netdev_mc_empty(netdev)) { |
68d480c4 AD |
3927 | /* nothing to program, so clear mc list */ |
3928 | igb_update_mc_addr_list(hw, NULL, 0); | |
3929 | igb_restore_vf_multicasts(adapter); | |
3930 | return 0; | |
3931 | } | |
9d5c8243 | 3932 | |
4cd24eaf | 3933 | mta_list = kzalloc(netdev_mc_count(netdev) * 6, GFP_ATOMIC); |
68d480c4 AD |
3934 | if (!mta_list) |
3935 | return -ENOMEM; | |
ff41f8dc | 3936 | |
68d480c4 | 3937 | /* The shared function expects a packed array of only addresses. */ |
48e2f183 | 3938 | i = 0; |
22bedad3 JP |
3939 | netdev_for_each_mc_addr(ha, netdev) |
3940 | memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN); | |
68d480c4 | 3941 | |
68d480c4 AD |
3942 | igb_update_mc_addr_list(hw, mta_list, i); |
3943 | kfree(mta_list); | |
3944 | ||
4cd24eaf | 3945 | return netdev_mc_count(netdev); |
68d480c4 AD |
3946 | } |
3947 | ||
3948 | /** | |
b980ac18 JK |
3949 | * igb_write_uc_addr_list - write unicast addresses to RAR table |
3950 | * @netdev: network interface device structure | |
68d480c4 | 3951 | * |
b980ac18 JK |
3952 | * Writes unicast address list to the RAR table. |
3953 | * Returns: -ENOMEM on failure/insufficient address space | |
3954 | * 0 on no addresses written | |
3955 | * X on writing X addresses to the RAR table | |
68d480c4 AD |
3956 | **/ |
3957 | static int igb_write_uc_addr_list(struct net_device *netdev) | |
3958 | { | |
3959 | struct igb_adapter *adapter = netdev_priv(netdev); | |
3960 | struct e1000_hw *hw = &adapter->hw; | |
3961 | unsigned int vfn = adapter->vfs_allocated_count; | |
3962 | unsigned int rar_entries = hw->mac.rar_entry_count - (vfn + 1); | |
3963 | int count = 0; | |
3964 | ||
3965 | /* return ENOMEM indicating insufficient memory for addresses */ | |
32e7bfc4 | 3966 | if (netdev_uc_count(netdev) > rar_entries) |
68d480c4 | 3967 | return -ENOMEM; |
9d5c8243 | 3968 | |
32e7bfc4 | 3969 | if (!netdev_uc_empty(netdev) && rar_entries) { |
ff41f8dc | 3970 | struct netdev_hw_addr *ha; |
32e7bfc4 JP |
3971 | |
3972 | netdev_for_each_uc_addr(ha, netdev) { | |
ff41f8dc AD |
3973 | if (!rar_entries) |
3974 | break; | |
26ad9178 | 3975 | igb_rar_set_qsel(adapter, ha->addr, |
b980ac18 JK |
3976 | rar_entries--, |
3977 | vfn); | |
68d480c4 | 3978 | count++; |
ff41f8dc AD |
3979 | } |
3980 | } | |
3981 | /* write the addresses in reverse order to avoid write combining */ | |
3982 | for (; rar_entries > 0 ; rar_entries--) { | |
3983 | wr32(E1000_RAH(rar_entries), 0); | |
3984 | wr32(E1000_RAL(rar_entries), 0); | |
3985 | } | |
3986 | wrfl(); | |
3987 | ||
68d480c4 AD |
3988 | return count; |
3989 | } | |
3990 | ||
3991 | /** | |
b980ac18 JK |
3992 | * igb_set_rx_mode - Secondary Unicast, Multicast and Promiscuous mode set |
3993 | * @netdev: network interface device structure | |
68d480c4 | 3994 | * |
b980ac18 JK |
3995 | * The set_rx_mode entry point is called whenever the unicast or multicast |
3996 | * address lists or the network interface flags are updated. This routine is | |
3997 | * responsible for configuring the hardware for proper unicast, multicast, | |
3998 | * promiscuous mode, and all-multi behavior. | |
68d480c4 AD |
3999 | **/ |
4000 | static void igb_set_rx_mode(struct net_device *netdev) | |
4001 | { | |
4002 | struct igb_adapter *adapter = netdev_priv(netdev); | |
4003 | struct e1000_hw *hw = &adapter->hw; | |
4004 | unsigned int vfn = adapter->vfs_allocated_count; | |
4005 | u32 rctl, vmolr = 0; | |
4006 | int count; | |
4007 | ||
4008 | /* Check for Promiscuous and All Multicast modes */ | |
4009 | rctl = rd32(E1000_RCTL); | |
4010 | ||
4011 | /* clear the effected bits */ | |
4012 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE | E1000_RCTL_VFE); | |
4013 | ||
4014 | if (netdev->flags & IFF_PROMISC) { | |
6f3dc319 | 4015 | /* retain VLAN HW filtering if in VT mode */ |
7e44892c | 4016 | if (adapter->vfs_allocated_count) |
6f3dc319 | 4017 | rctl |= E1000_RCTL_VFE; |
68d480c4 AD |
4018 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); |
4019 | vmolr |= (E1000_VMOLR_ROPE | E1000_VMOLR_MPME); | |
4020 | } else { | |
4021 | if (netdev->flags & IFF_ALLMULTI) { | |
4022 | rctl |= E1000_RCTL_MPE; | |
4023 | vmolr |= E1000_VMOLR_MPME; | |
4024 | } else { | |
b980ac18 | 4025 | /* Write addresses to the MTA, if the attempt fails |
25985edc | 4026 | * then we should just turn on promiscuous mode so |
68d480c4 AD |
4027 | * that we can at least receive multicast traffic |
4028 | */ | |
4029 | count = igb_write_mc_addr_list(netdev); | |
4030 | if (count < 0) { | |
4031 | rctl |= E1000_RCTL_MPE; | |
4032 | vmolr |= E1000_VMOLR_MPME; | |
4033 | } else if (count) { | |
4034 | vmolr |= E1000_VMOLR_ROMPE; | |
4035 | } | |
4036 | } | |
b980ac18 | 4037 | /* Write addresses to available RAR registers, if there is not |
68d480c4 | 4038 | * sufficient space to store all the addresses then enable |
25985edc | 4039 | * unicast promiscuous mode |
68d480c4 AD |
4040 | */ |
4041 | count = igb_write_uc_addr_list(netdev); | |
4042 | if (count < 0) { | |
4043 | rctl |= E1000_RCTL_UPE; | |
4044 | vmolr |= E1000_VMOLR_ROPE; | |
4045 | } | |
4046 | rctl |= E1000_RCTL_VFE; | |
28fc06f5 | 4047 | } |
68d480c4 | 4048 | wr32(E1000_RCTL, rctl); |
28fc06f5 | 4049 | |
b980ac18 | 4050 | /* In order to support SR-IOV and eventually VMDq it is necessary to set |
68d480c4 AD |
4051 | * the VMOLR to enable the appropriate modes. Without this workaround |
4052 | * we will have issues with VLAN tag stripping not being done for frames | |
4053 | * that are only arriving because we are the default pool | |
4054 | */ | |
f96a8a0b | 4055 | if ((hw->mac.type < e1000_82576) || (hw->mac.type > e1000_i350)) |
28fc06f5 | 4056 | return; |
9d5c8243 | 4057 | |
68d480c4 | 4058 | vmolr |= rd32(E1000_VMOLR(vfn)) & |
b980ac18 | 4059 | ~(E1000_VMOLR_ROPE | E1000_VMOLR_MPME | E1000_VMOLR_ROMPE); |
68d480c4 | 4060 | wr32(E1000_VMOLR(vfn), vmolr); |
28fc06f5 | 4061 | igb_restore_vf_multicasts(adapter); |
9d5c8243 AK |
4062 | } |
4063 | ||
13800469 GR |
4064 | static void igb_check_wvbr(struct igb_adapter *adapter) |
4065 | { | |
4066 | struct e1000_hw *hw = &adapter->hw; | |
4067 | u32 wvbr = 0; | |
4068 | ||
4069 | switch (hw->mac.type) { | |
4070 | case e1000_82576: | |
4071 | case e1000_i350: | |
81ad807b CW |
4072 | wvbr = rd32(E1000_WVBR); |
4073 | if (!wvbr) | |
13800469 GR |
4074 | return; |
4075 | break; | |
4076 | default: | |
4077 | break; | |
4078 | } | |
4079 | ||
4080 | adapter->wvbr |= wvbr; | |
4081 | } | |
4082 | ||
4083 | #define IGB_STAGGERED_QUEUE_OFFSET 8 | |
4084 | ||
4085 | static void igb_spoof_check(struct igb_adapter *adapter) | |
4086 | { | |
4087 | int j; | |
4088 | ||
4089 | if (!adapter->wvbr) | |
4090 | return; | |
4091 | ||
9005df38 | 4092 | for (j = 0; j < adapter->vfs_allocated_count; j++) { |
13800469 GR |
4093 | if (adapter->wvbr & (1 << j) || |
4094 | adapter->wvbr & (1 << (j + IGB_STAGGERED_QUEUE_OFFSET))) { | |
4095 | dev_warn(&adapter->pdev->dev, | |
4096 | "Spoof event(s) detected on VF %d\n", j); | |
4097 | adapter->wvbr &= | |
4098 | ~((1 << j) | | |
4099 | (1 << (j + IGB_STAGGERED_QUEUE_OFFSET))); | |
4100 | } | |
4101 | } | |
4102 | } | |
4103 | ||
9d5c8243 | 4104 | /* Need to wait a few seconds after link up to get diagnostic information from |
b980ac18 JK |
4105 | * the phy |
4106 | */ | |
9d5c8243 AK |
4107 | static void igb_update_phy_info(unsigned long data) |
4108 | { | |
4109 | struct igb_adapter *adapter = (struct igb_adapter *) data; | |
f5f4cf08 | 4110 | igb_get_phy_info(&adapter->hw); |
9d5c8243 AK |
4111 | } |
4112 | ||
4d6b725e | 4113 | /** |
b980ac18 JK |
4114 | * igb_has_link - check shared code for link and determine up/down |
4115 | * @adapter: pointer to driver private info | |
4d6b725e | 4116 | **/ |
3145535a | 4117 | bool igb_has_link(struct igb_adapter *adapter) |
4d6b725e AD |
4118 | { |
4119 | struct e1000_hw *hw = &adapter->hw; | |
4120 | bool link_active = false; | |
4d6b725e AD |
4121 | |
4122 | /* get_link_status is set on LSC (link status) interrupt or | |
4123 | * rx sequence error interrupt. get_link_status will stay | |
4124 | * false until the e1000_check_for_link establishes link | |
4125 | * for copper adapters ONLY | |
4126 | */ | |
4127 | switch (hw->phy.media_type) { | |
4128 | case e1000_media_type_copper: | |
e5c3370f AA |
4129 | if (!hw->mac.get_link_status) |
4130 | return true; | |
4d6b725e | 4131 | case e1000_media_type_internal_serdes: |
e5c3370f AA |
4132 | hw->mac.ops.check_for_link(hw); |
4133 | link_active = !hw->mac.get_link_status; | |
4d6b725e AD |
4134 | break; |
4135 | default: | |
4136 | case e1000_media_type_unknown: | |
4137 | break; | |
4138 | } | |
4139 | ||
aa9b8cc4 AA |
4140 | if (((hw->mac.type == e1000_i210) || |
4141 | (hw->mac.type == e1000_i211)) && | |
4142 | (hw->phy.id == I210_I_PHY_ID)) { | |
4143 | if (!netif_carrier_ok(adapter->netdev)) { | |
4144 | adapter->flags &= ~IGB_FLAG_NEED_LINK_UPDATE; | |
4145 | } else if (!(adapter->flags & IGB_FLAG_NEED_LINK_UPDATE)) { | |
4146 | adapter->flags |= IGB_FLAG_NEED_LINK_UPDATE; | |
4147 | adapter->link_check_timeout = jiffies; | |
4148 | } | |
4149 | } | |
4150 | ||
4d6b725e AD |
4151 | return link_active; |
4152 | } | |
4153 | ||
563988dc SA |
4154 | static bool igb_thermal_sensor_event(struct e1000_hw *hw, u32 event) |
4155 | { | |
4156 | bool ret = false; | |
4157 | u32 ctrl_ext, thstat; | |
4158 | ||
f96a8a0b | 4159 | /* check for thermal sensor event on i350 copper only */ |
563988dc SA |
4160 | if (hw->mac.type == e1000_i350) { |
4161 | thstat = rd32(E1000_THSTAT); | |
4162 | ctrl_ext = rd32(E1000_CTRL_EXT); | |
4163 | ||
4164 | if ((hw->phy.media_type == e1000_media_type_copper) && | |
5c17a203 | 4165 | !(ctrl_ext & E1000_CTRL_EXT_LINK_MODE_SGMII)) |
563988dc | 4166 | ret = !!(thstat & event); |
563988dc SA |
4167 | } |
4168 | ||
4169 | return ret; | |
4170 | } | |
4171 | ||
1516f0a6 CW |
4172 | /** |
4173 | * igb_check_lvmmc - check for malformed packets received | |
4174 | * and indicated in LVMMC register | |
4175 | * @adapter: pointer to adapter | |
4176 | **/ | |
4177 | static void igb_check_lvmmc(struct igb_adapter *adapter) | |
4178 | { | |
4179 | struct e1000_hw *hw = &adapter->hw; | |
4180 | u32 lvmmc; | |
4181 | ||
4182 | lvmmc = rd32(E1000_LVMMC); | |
4183 | if (lvmmc) { | |
4184 | if (unlikely(net_ratelimit())) { | |
4185 | netdev_warn(adapter->netdev, | |
4186 | "malformed Tx packet detected and dropped, LVMMC:0x%08x\n", | |
4187 | lvmmc); | |
4188 | } | |
4189 | } | |
4190 | } | |
4191 | ||
9d5c8243 | 4192 | /** |
b980ac18 JK |
4193 | * igb_watchdog - Timer Call-back |
4194 | * @data: pointer to adapter cast into an unsigned long | |
9d5c8243 AK |
4195 | **/ |
4196 | static void igb_watchdog(unsigned long data) | |
4197 | { | |
4198 | struct igb_adapter *adapter = (struct igb_adapter *)data; | |
4199 | /* Do the rest outside of interrupt context */ | |
4200 | schedule_work(&adapter->watchdog_task); | |
4201 | } | |
4202 | ||
4203 | static void igb_watchdog_task(struct work_struct *work) | |
4204 | { | |
4205 | struct igb_adapter *adapter = container_of(work, | |
b980ac18 JK |
4206 | struct igb_adapter, |
4207 | watchdog_task); | |
9d5c8243 | 4208 | struct e1000_hw *hw = &adapter->hw; |
c0ba4778 | 4209 | struct e1000_phy_info *phy = &hw->phy; |
9d5c8243 | 4210 | struct net_device *netdev = adapter->netdev; |
563988dc | 4211 | u32 link; |
7a6ea550 | 4212 | int i; |
56cec249 | 4213 | u32 connsw; |
9d5c8243 | 4214 | |
4d6b725e | 4215 | link = igb_has_link(adapter); |
aa9b8cc4 AA |
4216 | |
4217 | if (adapter->flags & IGB_FLAG_NEED_LINK_UPDATE) { | |
4218 | if (time_after(jiffies, (adapter->link_check_timeout + HZ))) | |
4219 | adapter->flags &= ~IGB_FLAG_NEED_LINK_UPDATE; | |
4220 | else | |
4221 | link = false; | |
4222 | } | |
4223 | ||
56cec249 CW |
4224 | /* Force link down if we have fiber to swap to */ |
4225 | if (adapter->flags & IGB_FLAG_MAS_ENABLE) { | |
4226 | if (hw->phy.media_type == e1000_media_type_copper) { | |
4227 | connsw = rd32(E1000_CONNSW); | |
4228 | if (!(connsw & E1000_CONNSW_AUTOSENSE_EN)) | |
4229 | link = 0; | |
4230 | } | |
4231 | } | |
9d5c8243 | 4232 | if (link) { |
2bdfc4e2 CW |
4233 | /* Perform a reset if the media type changed. */ |
4234 | if (hw->dev_spec._82575.media_changed) { | |
4235 | hw->dev_spec._82575.media_changed = false; | |
4236 | adapter->flags |= IGB_FLAG_MEDIA_RESET; | |
4237 | igb_reset(adapter); | |
4238 | } | |
749ab2cd YZ |
4239 | /* Cancel scheduled suspend requests. */ |
4240 | pm_runtime_resume(netdev->dev.parent); | |
4241 | ||
9d5c8243 AK |
4242 | if (!netif_carrier_ok(netdev)) { |
4243 | u32 ctrl; | |
9005df38 | 4244 | |
330a6d6a | 4245 | hw->mac.ops.get_speed_and_duplex(hw, |
b980ac18 JK |
4246 | &adapter->link_speed, |
4247 | &adapter->link_duplex); | |
9d5c8243 AK |
4248 | |
4249 | ctrl = rd32(E1000_CTRL); | |
527d47c1 | 4250 | /* Links status message must follow this format */ |
c75c4edf CW |
4251 | netdev_info(netdev, |
4252 | "igb: %s NIC Link is Up %d Mbps %s Duplex, Flow Control: %s\n", | |
559e9c49 AD |
4253 | netdev->name, |
4254 | adapter->link_speed, | |
4255 | adapter->link_duplex == FULL_DUPLEX ? | |
876d2d6f JK |
4256 | "Full" : "Half", |
4257 | (ctrl & E1000_CTRL_TFCE) && | |
4258 | (ctrl & E1000_CTRL_RFCE) ? "RX/TX" : | |
4259 | (ctrl & E1000_CTRL_RFCE) ? "RX" : | |
4260 | (ctrl & E1000_CTRL_TFCE) ? "TX" : "None"); | |
9d5c8243 | 4261 | |
f4c01e96 CW |
4262 | /* disable EEE if enabled */ |
4263 | if ((adapter->flags & IGB_FLAG_EEE) && | |
4264 | (adapter->link_duplex == HALF_DUPLEX)) { | |
4265 | dev_info(&adapter->pdev->dev, | |
4266 | "EEE Disabled: unsupported at half duplex. Re-enable using ethtool when at full duplex.\n"); | |
4267 | adapter->hw.dev_spec._82575.eee_disable = true; | |
4268 | adapter->flags &= ~IGB_FLAG_EEE; | |
4269 | } | |
4270 | ||
c0ba4778 KS |
4271 | /* check if SmartSpeed worked */ |
4272 | igb_check_downshift(hw); | |
4273 | if (phy->speed_downgraded) | |
4274 | netdev_warn(netdev, "Link Speed was downgraded by SmartSpeed\n"); | |
4275 | ||
563988dc | 4276 | /* check for thermal sensor event */ |
876d2d6f | 4277 | if (igb_thermal_sensor_event(hw, |
d34a15ab | 4278 | E1000_THSTAT_LINK_THROTTLE)) |
c75c4edf | 4279 | netdev_info(netdev, "The network adapter link speed was downshifted because it overheated\n"); |
563988dc | 4280 | |
d07f3e37 | 4281 | /* adjust timeout factor according to speed/duplex */ |
9d5c8243 AK |
4282 | adapter->tx_timeout_factor = 1; |
4283 | switch (adapter->link_speed) { | |
4284 | case SPEED_10: | |
9d5c8243 AK |
4285 | adapter->tx_timeout_factor = 14; |
4286 | break; | |
4287 | case SPEED_100: | |
9d5c8243 AK |
4288 | /* maybe add some timeout factor ? */ |
4289 | break; | |
4290 | } | |
4291 | ||
4292 | netif_carrier_on(netdev); | |
9d5c8243 | 4293 | |
4ae196df | 4294 | igb_ping_all_vfs(adapter); |
17dc566c | 4295 | igb_check_vf_rate_limit(adapter); |
4ae196df | 4296 | |
4b1a9877 | 4297 | /* link state has changed, schedule phy info update */ |
9d5c8243 AK |
4298 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
4299 | mod_timer(&adapter->phy_info_timer, | |
4300 | round_jiffies(jiffies + 2 * HZ)); | |
4301 | } | |
4302 | } else { | |
4303 | if (netif_carrier_ok(netdev)) { | |
4304 | adapter->link_speed = 0; | |
4305 | adapter->link_duplex = 0; | |
563988dc SA |
4306 | |
4307 | /* check for thermal sensor event */ | |
876d2d6f JK |
4308 | if (igb_thermal_sensor_event(hw, |
4309 | E1000_THSTAT_PWR_DOWN)) { | |
c75c4edf | 4310 | netdev_err(netdev, "The network adapter was stopped because it overheated\n"); |
7ef5ed1c | 4311 | } |
563988dc | 4312 | |
527d47c1 | 4313 | /* Links status message must follow this format */ |
c75c4edf | 4314 | netdev_info(netdev, "igb: %s NIC Link is Down\n", |
527d47c1 | 4315 | netdev->name); |
9d5c8243 | 4316 | netif_carrier_off(netdev); |
4b1a9877 | 4317 | |
4ae196df AD |
4318 | igb_ping_all_vfs(adapter); |
4319 | ||
4b1a9877 | 4320 | /* link state has changed, schedule phy info update */ |
9d5c8243 AK |
4321 | if (!test_bit(__IGB_DOWN, &adapter->state)) |
4322 | mod_timer(&adapter->phy_info_timer, | |
4323 | round_jiffies(jiffies + 2 * HZ)); | |
749ab2cd | 4324 | |
56cec249 CW |
4325 | /* link is down, time to check for alternate media */ |
4326 | if (adapter->flags & IGB_FLAG_MAS_ENABLE) { | |
4327 | igb_check_swap_media(adapter); | |
4328 | if (adapter->flags & IGB_FLAG_MEDIA_RESET) { | |
4329 | schedule_work(&adapter->reset_task); | |
4330 | /* return immediately */ | |
4331 | return; | |
4332 | } | |
4333 | } | |
749ab2cd YZ |
4334 | pm_schedule_suspend(netdev->dev.parent, |
4335 | MSEC_PER_SEC * 5); | |
56cec249 CW |
4336 | |
4337 | /* also check for alternate media here */ | |
4338 | } else if (!netif_carrier_ok(netdev) && | |
4339 | (adapter->flags & IGB_FLAG_MAS_ENABLE)) { | |
4340 | igb_check_swap_media(adapter); | |
4341 | if (adapter->flags & IGB_FLAG_MEDIA_RESET) { | |
4342 | schedule_work(&adapter->reset_task); | |
4343 | /* return immediately */ | |
4344 | return; | |
4345 | } | |
9d5c8243 AK |
4346 | } |
4347 | } | |
4348 | ||
12dcd86b ED |
4349 | spin_lock(&adapter->stats64_lock); |
4350 | igb_update_stats(adapter, &adapter->stats64); | |
4351 | spin_unlock(&adapter->stats64_lock); | |
9d5c8243 | 4352 | |
dbabb065 | 4353 | for (i = 0; i < adapter->num_tx_queues; i++) { |
3025a446 | 4354 | struct igb_ring *tx_ring = adapter->tx_ring[i]; |
dbabb065 | 4355 | if (!netif_carrier_ok(netdev)) { |
9d5c8243 AK |
4356 | /* We've lost link, so the controller stops DMA, |
4357 | * but we've got queued Tx work that's never going | |
4358 | * to get done, so reset controller to flush Tx. | |
b980ac18 JK |
4359 | * (Do the reset outside of interrupt context). |
4360 | */ | |
dbabb065 AD |
4361 | if (igb_desc_unused(tx_ring) + 1 < tx_ring->count) { |
4362 | adapter->tx_timeout_count++; | |
4363 | schedule_work(&adapter->reset_task); | |
4364 | /* return immediately since reset is imminent */ | |
4365 | return; | |
4366 | } | |
9d5c8243 | 4367 | } |
9d5c8243 | 4368 | |
dbabb065 | 4369 | /* Force detection of hung controller every watchdog period */ |
6d095fa8 | 4370 | set_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags); |
dbabb065 | 4371 | } |
f7ba205e | 4372 | |
b980ac18 | 4373 | /* Cause software interrupt to ensure Rx ring is cleaned */ |
cd14ef54 | 4374 | if (adapter->flags & IGB_FLAG_HAS_MSIX) { |
047e0030 | 4375 | u32 eics = 0; |
9005df38 | 4376 | |
0d1ae7f4 AD |
4377 | for (i = 0; i < adapter->num_q_vectors; i++) |
4378 | eics |= adapter->q_vector[i]->eims_value; | |
7a6ea550 AD |
4379 | wr32(E1000_EICS, eics); |
4380 | } else { | |
4381 | wr32(E1000_ICS, E1000_ICS_RXDMT0); | |
4382 | } | |
9d5c8243 | 4383 | |
13800469 | 4384 | igb_spoof_check(adapter); |
fc580751 | 4385 | igb_ptp_rx_hang(adapter); |
13800469 | 4386 | |
1516f0a6 CW |
4387 | /* Check LVMMC register on i350/i354 only */ |
4388 | if ((adapter->hw.mac.type == e1000_i350) || | |
4389 | (adapter->hw.mac.type == e1000_i354)) | |
4390 | igb_check_lvmmc(adapter); | |
4391 | ||
9d5c8243 | 4392 | /* Reset the timer */ |
aa9b8cc4 AA |
4393 | if (!test_bit(__IGB_DOWN, &adapter->state)) { |
4394 | if (adapter->flags & IGB_FLAG_NEED_LINK_UPDATE) | |
4395 | mod_timer(&adapter->watchdog_timer, | |
4396 | round_jiffies(jiffies + HZ)); | |
4397 | else | |
4398 | mod_timer(&adapter->watchdog_timer, | |
4399 | round_jiffies(jiffies + 2 * HZ)); | |
4400 | } | |
9d5c8243 AK |
4401 | } |
4402 | ||
4403 | enum latency_range { | |
4404 | lowest_latency = 0, | |
4405 | low_latency = 1, | |
4406 | bulk_latency = 2, | |
4407 | latency_invalid = 255 | |
4408 | }; | |
4409 | ||
6eb5a7f1 | 4410 | /** |
b980ac18 JK |
4411 | * igb_update_ring_itr - update the dynamic ITR value based on packet size |
4412 | * @q_vector: pointer to q_vector | |
6eb5a7f1 | 4413 | * |
b980ac18 JK |
4414 | * Stores a new ITR value based on strictly on packet size. This |
4415 | * algorithm is less sophisticated than that used in igb_update_itr, | |
4416 | * due to the difficulty of synchronizing statistics across multiple | |
4417 | * receive rings. The divisors and thresholds used by this function | |
4418 | * were determined based on theoretical maximum wire speed and testing | |
4419 | * data, in order to minimize response time while increasing bulk | |
4420 | * throughput. | |
406d4965 | 4421 | * This functionality is controlled by ethtool's coalescing settings. |
b980ac18 JK |
4422 | * NOTE: This function is called only when operating in a multiqueue |
4423 | * receive environment. | |
6eb5a7f1 | 4424 | **/ |
047e0030 | 4425 | static void igb_update_ring_itr(struct igb_q_vector *q_vector) |
9d5c8243 | 4426 | { |
047e0030 | 4427 | int new_val = q_vector->itr_val; |
6eb5a7f1 | 4428 | int avg_wire_size = 0; |
047e0030 | 4429 | struct igb_adapter *adapter = q_vector->adapter; |
12dcd86b | 4430 | unsigned int packets; |
9d5c8243 | 4431 | |
6eb5a7f1 AD |
4432 | /* For non-gigabit speeds, just fix the interrupt rate at 4000 |
4433 | * ints/sec - ITR timer value of 120 ticks. | |
4434 | */ | |
4435 | if (adapter->link_speed != SPEED_1000) { | |
0ba82994 | 4436 | new_val = IGB_4K_ITR; |
6eb5a7f1 | 4437 | goto set_itr_val; |
9d5c8243 | 4438 | } |
047e0030 | 4439 | |
0ba82994 AD |
4440 | packets = q_vector->rx.total_packets; |
4441 | if (packets) | |
4442 | avg_wire_size = q_vector->rx.total_bytes / packets; | |
047e0030 | 4443 | |
0ba82994 AD |
4444 | packets = q_vector->tx.total_packets; |
4445 | if (packets) | |
4446 | avg_wire_size = max_t(u32, avg_wire_size, | |
4447 | q_vector->tx.total_bytes / packets); | |
047e0030 AD |
4448 | |
4449 | /* if avg_wire_size isn't set no work was done */ | |
4450 | if (!avg_wire_size) | |
4451 | goto clear_counts; | |
9d5c8243 | 4452 | |
6eb5a7f1 AD |
4453 | /* Add 24 bytes to size to account for CRC, preamble, and gap */ |
4454 | avg_wire_size += 24; | |
4455 | ||
4456 | /* Don't starve jumbo frames */ | |
4457 | avg_wire_size = min(avg_wire_size, 3000); | |
9d5c8243 | 4458 | |
6eb5a7f1 AD |
4459 | /* Give a little boost to mid-size frames */ |
4460 | if ((avg_wire_size > 300) && (avg_wire_size < 1200)) | |
4461 | new_val = avg_wire_size / 3; | |
4462 | else | |
4463 | new_val = avg_wire_size / 2; | |
9d5c8243 | 4464 | |
0ba82994 AD |
4465 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
4466 | if (new_val < IGB_20K_ITR && | |
4467 | ((q_vector->rx.ring && adapter->rx_itr_setting == 3) || | |
4468 | (!q_vector->rx.ring && adapter->tx_itr_setting == 3))) | |
4469 | new_val = IGB_20K_ITR; | |
abe1c363 | 4470 | |
6eb5a7f1 | 4471 | set_itr_val: |
047e0030 AD |
4472 | if (new_val != q_vector->itr_val) { |
4473 | q_vector->itr_val = new_val; | |
4474 | q_vector->set_itr = 1; | |
9d5c8243 | 4475 | } |
6eb5a7f1 | 4476 | clear_counts: |
0ba82994 AD |
4477 | q_vector->rx.total_bytes = 0; |
4478 | q_vector->rx.total_packets = 0; | |
4479 | q_vector->tx.total_bytes = 0; | |
4480 | q_vector->tx.total_packets = 0; | |
9d5c8243 AK |
4481 | } |
4482 | ||
4483 | /** | |
b980ac18 JK |
4484 | * igb_update_itr - update the dynamic ITR value based on statistics |
4485 | * @q_vector: pointer to q_vector | |
4486 | * @ring_container: ring info to update the itr for | |
4487 | * | |
4488 | * Stores a new ITR value based on packets and byte | |
4489 | * counts during the last interrupt. The advantage of per interrupt | |
4490 | * computation is faster updates and more accurate ITR for the current | |
4491 | * traffic pattern. Constants in this function were computed | |
4492 | * based on theoretical maximum wire speed and thresholds were set based | |
4493 | * on testing data as well as attempting to minimize response time | |
4494 | * while increasing bulk throughput. | |
406d4965 | 4495 | * This functionality is controlled by ethtool's coalescing settings. |
b980ac18 JK |
4496 | * NOTE: These calculations are only valid when operating in a single- |
4497 | * queue environment. | |
9d5c8243 | 4498 | **/ |
0ba82994 AD |
4499 | static void igb_update_itr(struct igb_q_vector *q_vector, |
4500 | struct igb_ring_container *ring_container) | |
9d5c8243 | 4501 | { |
0ba82994 AD |
4502 | unsigned int packets = ring_container->total_packets; |
4503 | unsigned int bytes = ring_container->total_bytes; | |
4504 | u8 itrval = ring_container->itr; | |
9d5c8243 | 4505 | |
0ba82994 | 4506 | /* no packets, exit with status unchanged */ |
9d5c8243 | 4507 | if (packets == 0) |
0ba82994 | 4508 | return; |
9d5c8243 | 4509 | |
0ba82994 | 4510 | switch (itrval) { |
9d5c8243 AK |
4511 | case lowest_latency: |
4512 | /* handle TSO and jumbo frames */ | |
4513 | if (bytes/packets > 8000) | |
0ba82994 | 4514 | itrval = bulk_latency; |
9d5c8243 | 4515 | else if ((packets < 5) && (bytes > 512)) |
0ba82994 | 4516 | itrval = low_latency; |
9d5c8243 AK |
4517 | break; |
4518 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
4519 | if (bytes > 10000) { | |
4520 | /* this if handles the TSO accounting */ | |
d34a15ab | 4521 | if (bytes/packets > 8000) |
0ba82994 | 4522 | itrval = bulk_latency; |
d34a15ab | 4523 | else if ((packets < 10) || ((bytes/packets) > 1200)) |
0ba82994 | 4524 | itrval = bulk_latency; |
d34a15ab | 4525 | else if ((packets > 35)) |
0ba82994 | 4526 | itrval = lowest_latency; |
9d5c8243 | 4527 | } else if (bytes/packets > 2000) { |
0ba82994 | 4528 | itrval = bulk_latency; |
9d5c8243 | 4529 | } else if (packets <= 2 && bytes < 512) { |
0ba82994 | 4530 | itrval = lowest_latency; |
9d5c8243 AK |
4531 | } |
4532 | break; | |
4533 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
4534 | if (bytes > 25000) { | |
4535 | if (packets > 35) | |
0ba82994 | 4536 | itrval = low_latency; |
1e5c3d21 | 4537 | } else if (bytes < 1500) { |
0ba82994 | 4538 | itrval = low_latency; |
9d5c8243 AK |
4539 | } |
4540 | break; | |
4541 | } | |
4542 | ||
0ba82994 AD |
4543 | /* clear work counters since we have the values we need */ |
4544 | ring_container->total_bytes = 0; | |
4545 | ring_container->total_packets = 0; | |
4546 | ||
4547 | /* write updated itr to ring container */ | |
4548 | ring_container->itr = itrval; | |
9d5c8243 AK |
4549 | } |
4550 | ||
0ba82994 | 4551 | static void igb_set_itr(struct igb_q_vector *q_vector) |
9d5c8243 | 4552 | { |
0ba82994 | 4553 | struct igb_adapter *adapter = q_vector->adapter; |
047e0030 | 4554 | u32 new_itr = q_vector->itr_val; |
0ba82994 | 4555 | u8 current_itr = 0; |
9d5c8243 AK |
4556 | |
4557 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ | |
4558 | if (adapter->link_speed != SPEED_1000) { | |
4559 | current_itr = 0; | |
0ba82994 | 4560 | new_itr = IGB_4K_ITR; |
9d5c8243 AK |
4561 | goto set_itr_now; |
4562 | } | |
4563 | ||
0ba82994 AD |
4564 | igb_update_itr(q_vector, &q_vector->tx); |
4565 | igb_update_itr(q_vector, &q_vector->rx); | |
9d5c8243 | 4566 | |
0ba82994 | 4567 | current_itr = max(q_vector->rx.itr, q_vector->tx.itr); |
9d5c8243 | 4568 | |
6eb5a7f1 | 4569 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ |
0ba82994 AD |
4570 | if (current_itr == lowest_latency && |
4571 | ((q_vector->rx.ring && adapter->rx_itr_setting == 3) || | |
4572 | (!q_vector->rx.ring && adapter->tx_itr_setting == 3))) | |
6eb5a7f1 AD |
4573 | current_itr = low_latency; |
4574 | ||
9d5c8243 AK |
4575 | switch (current_itr) { |
4576 | /* counts and packets in update_itr are dependent on these numbers */ | |
4577 | case lowest_latency: | |
0ba82994 | 4578 | new_itr = IGB_70K_ITR; /* 70,000 ints/sec */ |
9d5c8243 AK |
4579 | break; |
4580 | case low_latency: | |
0ba82994 | 4581 | new_itr = IGB_20K_ITR; /* 20,000 ints/sec */ |
9d5c8243 AK |
4582 | break; |
4583 | case bulk_latency: | |
0ba82994 | 4584 | new_itr = IGB_4K_ITR; /* 4,000 ints/sec */ |
9d5c8243 AK |
4585 | break; |
4586 | default: | |
4587 | break; | |
4588 | } | |
4589 | ||
4590 | set_itr_now: | |
047e0030 | 4591 | if (new_itr != q_vector->itr_val) { |
9d5c8243 AK |
4592 | /* this attempts to bias the interrupt rate towards Bulk |
4593 | * by adding intermediate steps when interrupt rate is | |
b980ac18 JK |
4594 | * increasing |
4595 | */ | |
047e0030 | 4596 | new_itr = new_itr > q_vector->itr_val ? |
b980ac18 JK |
4597 | max((new_itr * q_vector->itr_val) / |
4598 | (new_itr + (q_vector->itr_val >> 2)), | |
4599 | new_itr) : new_itr; | |
9d5c8243 AK |
4600 | /* Don't write the value here; it resets the adapter's |
4601 | * internal timer, and causes us to delay far longer than | |
4602 | * we should between interrupts. Instead, we write the ITR | |
4603 | * value at the beginning of the next interrupt so the timing | |
4604 | * ends up being correct. | |
4605 | */ | |
047e0030 AD |
4606 | q_vector->itr_val = new_itr; |
4607 | q_vector->set_itr = 1; | |
9d5c8243 | 4608 | } |
9d5c8243 AK |
4609 | } |
4610 | ||
c50b52a0 SH |
4611 | static void igb_tx_ctxtdesc(struct igb_ring *tx_ring, u32 vlan_macip_lens, |
4612 | u32 type_tucmd, u32 mss_l4len_idx) | |
7d13a7d0 AD |
4613 | { |
4614 | struct e1000_adv_tx_context_desc *context_desc; | |
4615 | u16 i = tx_ring->next_to_use; | |
4616 | ||
4617 | context_desc = IGB_TX_CTXTDESC(tx_ring, i); | |
4618 | ||
4619 | i++; | |
4620 | tx_ring->next_to_use = (i < tx_ring->count) ? i : 0; | |
4621 | ||
4622 | /* set bits to identify this as an advanced context descriptor */ | |
4623 | type_tucmd |= E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT; | |
4624 | ||
4625 | /* For 82575, context index must be unique per ring. */ | |
866cff06 | 4626 | if (test_bit(IGB_RING_FLAG_TX_CTX_IDX, &tx_ring->flags)) |
7d13a7d0 AD |
4627 | mss_l4len_idx |= tx_ring->reg_idx << 4; |
4628 | ||
4629 | context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); | |
4630 | context_desc->seqnum_seed = 0; | |
4631 | context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd); | |
4632 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); | |
4633 | } | |
4634 | ||
7af40ad9 AD |
4635 | static int igb_tso(struct igb_ring *tx_ring, |
4636 | struct igb_tx_buffer *first, | |
4637 | u8 *hdr_len) | |
9d5c8243 | 4638 | { |
7af40ad9 | 4639 | struct sk_buff *skb = first->skb; |
7d13a7d0 AD |
4640 | u32 vlan_macip_lens, type_tucmd; |
4641 | u32 mss_l4len_idx, l4len; | |
06c14e5a | 4642 | int err; |
7d13a7d0 | 4643 | |
ed6aa105 AD |
4644 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
4645 | return 0; | |
4646 | ||
7d13a7d0 AD |
4647 | if (!skb_is_gso(skb)) |
4648 | return 0; | |
9d5c8243 | 4649 | |
06c14e5a FR |
4650 | err = skb_cow_head(skb, 0); |
4651 | if (err < 0) | |
4652 | return err; | |
9d5c8243 | 4653 | |
7d13a7d0 AD |
4654 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ |
4655 | type_tucmd = E1000_ADVTXD_TUCMD_L4T_TCP; | |
9d5c8243 | 4656 | |
7c4d16ff | 4657 | if (first->protocol == htons(ETH_P_IP)) { |
9d5c8243 AK |
4658 | struct iphdr *iph = ip_hdr(skb); |
4659 | iph->tot_len = 0; | |
4660 | iph->check = 0; | |
4661 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, | |
4662 | iph->daddr, 0, | |
4663 | IPPROTO_TCP, | |
4664 | 0); | |
7d13a7d0 | 4665 | type_tucmd |= E1000_ADVTXD_TUCMD_IPV4; |
7af40ad9 AD |
4666 | first->tx_flags |= IGB_TX_FLAGS_TSO | |
4667 | IGB_TX_FLAGS_CSUM | | |
4668 | IGB_TX_FLAGS_IPV4; | |
8e1e8a47 | 4669 | } else if (skb_is_gso_v6(skb)) { |
9d5c8243 AK |
4670 | ipv6_hdr(skb)->payload_len = 0; |
4671 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
4672 | &ipv6_hdr(skb)->daddr, | |
4673 | 0, IPPROTO_TCP, 0); | |
7af40ad9 AD |
4674 | first->tx_flags |= IGB_TX_FLAGS_TSO | |
4675 | IGB_TX_FLAGS_CSUM; | |
9d5c8243 AK |
4676 | } |
4677 | ||
7af40ad9 | 4678 | /* compute header lengths */ |
7d13a7d0 AD |
4679 | l4len = tcp_hdrlen(skb); |
4680 | *hdr_len = skb_transport_offset(skb) + l4len; | |
9d5c8243 | 4681 | |
7af40ad9 AD |
4682 | /* update gso size and bytecount with header size */ |
4683 | first->gso_segs = skb_shinfo(skb)->gso_segs; | |
4684 | first->bytecount += (first->gso_segs - 1) * *hdr_len; | |
4685 | ||
9d5c8243 | 4686 | /* MSS L4LEN IDX */ |
7d13a7d0 AD |
4687 | mss_l4len_idx = l4len << E1000_ADVTXD_L4LEN_SHIFT; |
4688 | mss_l4len_idx |= skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT; | |
9d5c8243 | 4689 | |
7d13a7d0 AD |
4690 | /* VLAN MACLEN IPLEN */ |
4691 | vlan_macip_lens = skb_network_header_len(skb); | |
4692 | vlan_macip_lens |= skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT; | |
7af40ad9 | 4693 | vlan_macip_lens |= first->tx_flags & IGB_TX_FLAGS_VLAN_MASK; |
9d5c8243 | 4694 | |
7d13a7d0 | 4695 | igb_tx_ctxtdesc(tx_ring, vlan_macip_lens, type_tucmd, mss_l4len_idx); |
9d5c8243 | 4696 | |
7d13a7d0 | 4697 | return 1; |
9d5c8243 AK |
4698 | } |
4699 | ||
7af40ad9 | 4700 | static void igb_tx_csum(struct igb_ring *tx_ring, struct igb_tx_buffer *first) |
9d5c8243 | 4701 | { |
7af40ad9 | 4702 | struct sk_buff *skb = first->skb; |
7d13a7d0 AD |
4703 | u32 vlan_macip_lens = 0; |
4704 | u32 mss_l4len_idx = 0; | |
4705 | u32 type_tucmd = 0; | |
9d5c8243 | 4706 | |
7d13a7d0 | 4707 | if (skb->ip_summed != CHECKSUM_PARTIAL) { |
7af40ad9 AD |
4708 | if (!(first->tx_flags & IGB_TX_FLAGS_VLAN)) |
4709 | return; | |
7d13a7d0 AD |
4710 | } else { |
4711 | u8 l4_hdr = 0; | |
9005df38 | 4712 | |
7af40ad9 | 4713 | switch (first->protocol) { |
7c4d16ff | 4714 | case htons(ETH_P_IP): |
7d13a7d0 AD |
4715 | vlan_macip_lens |= skb_network_header_len(skb); |
4716 | type_tucmd |= E1000_ADVTXD_TUCMD_IPV4; | |
4717 | l4_hdr = ip_hdr(skb)->protocol; | |
4718 | break; | |
7c4d16ff | 4719 | case htons(ETH_P_IPV6): |
7d13a7d0 AD |
4720 | vlan_macip_lens |= skb_network_header_len(skb); |
4721 | l4_hdr = ipv6_hdr(skb)->nexthdr; | |
4722 | break; | |
4723 | default: | |
4724 | if (unlikely(net_ratelimit())) { | |
4725 | dev_warn(tx_ring->dev, | |
b980ac18 JK |
4726 | "partial checksum but proto=%x!\n", |
4727 | first->protocol); | |
fa4a7ef3 | 4728 | } |
7d13a7d0 AD |
4729 | break; |
4730 | } | |
fa4a7ef3 | 4731 | |
7d13a7d0 AD |
4732 | switch (l4_hdr) { |
4733 | case IPPROTO_TCP: | |
4734 | type_tucmd |= E1000_ADVTXD_TUCMD_L4T_TCP; | |
4735 | mss_l4len_idx = tcp_hdrlen(skb) << | |
4736 | E1000_ADVTXD_L4LEN_SHIFT; | |
4737 | break; | |
4738 | case IPPROTO_SCTP: | |
4739 | type_tucmd |= E1000_ADVTXD_TUCMD_L4T_SCTP; | |
4740 | mss_l4len_idx = sizeof(struct sctphdr) << | |
4741 | E1000_ADVTXD_L4LEN_SHIFT; | |
4742 | break; | |
4743 | case IPPROTO_UDP: | |
4744 | mss_l4len_idx = sizeof(struct udphdr) << | |
4745 | E1000_ADVTXD_L4LEN_SHIFT; | |
4746 | break; | |
4747 | default: | |
4748 | if (unlikely(net_ratelimit())) { | |
4749 | dev_warn(tx_ring->dev, | |
b980ac18 JK |
4750 | "partial checksum but l4 proto=%x!\n", |
4751 | l4_hdr); | |
44b0cda3 | 4752 | } |
7d13a7d0 | 4753 | break; |
9d5c8243 | 4754 | } |
7af40ad9 AD |
4755 | |
4756 | /* update TX checksum flag */ | |
4757 | first->tx_flags |= IGB_TX_FLAGS_CSUM; | |
7d13a7d0 | 4758 | } |
9d5c8243 | 4759 | |
7d13a7d0 | 4760 | vlan_macip_lens |= skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT; |
7af40ad9 | 4761 | vlan_macip_lens |= first->tx_flags & IGB_TX_FLAGS_VLAN_MASK; |
9d5c8243 | 4762 | |
7d13a7d0 | 4763 | igb_tx_ctxtdesc(tx_ring, vlan_macip_lens, type_tucmd, mss_l4len_idx); |
9d5c8243 AK |
4764 | } |
4765 | ||
1d9daf45 AD |
4766 | #define IGB_SET_FLAG(_input, _flag, _result) \ |
4767 | ((_flag <= _result) ? \ | |
4768 | ((u32)(_input & _flag) * (_result / _flag)) : \ | |
4769 | ((u32)(_input & _flag) / (_flag / _result))) | |
4770 | ||
4771 | static u32 igb_tx_cmd_type(struct sk_buff *skb, u32 tx_flags) | |
e032afc8 AD |
4772 | { |
4773 | /* set type for advanced descriptor with frame checksum insertion */ | |
1d9daf45 AD |
4774 | u32 cmd_type = E1000_ADVTXD_DTYP_DATA | |
4775 | E1000_ADVTXD_DCMD_DEXT | | |
4776 | E1000_ADVTXD_DCMD_IFCS; | |
e032afc8 AD |
4777 | |
4778 | /* set HW vlan bit if vlan is present */ | |
1d9daf45 AD |
4779 | cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_VLAN, |
4780 | (E1000_ADVTXD_DCMD_VLE)); | |
4781 | ||
4782 | /* set segmentation bits for TSO */ | |
4783 | cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_TSO, | |
4784 | (E1000_ADVTXD_DCMD_TSE)); | |
e032afc8 AD |
4785 | |
4786 | /* set timestamp bit if present */ | |
1d9daf45 AD |
4787 | cmd_type |= IGB_SET_FLAG(tx_flags, IGB_TX_FLAGS_TSTAMP, |
4788 | (E1000_ADVTXD_MAC_TSTAMP)); | |
e032afc8 | 4789 | |
1d9daf45 AD |
4790 | /* insert frame checksum */ |
4791 | cmd_type ^= IGB_SET_FLAG(skb->no_fcs, 1, E1000_ADVTXD_DCMD_IFCS); | |
e032afc8 AD |
4792 | |
4793 | return cmd_type; | |
4794 | } | |
4795 | ||
7af40ad9 AD |
4796 | static void igb_tx_olinfo_status(struct igb_ring *tx_ring, |
4797 | union e1000_adv_tx_desc *tx_desc, | |
4798 | u32 tx_flags, unsigned int paylen) | |
e032afc8 AD |
4799 | { |
4800 | u32 olinfo_status = paylen << E1000_ADVTXD_PAYLEN_SHIFT; | |
4801 | ||
1d9daf45 AD |
4802 | /* 82575 requires a unique index per ring */ |
4803 | if (test_bit(IGB_RING_FLAG_TX_CTX_IDX, &tx_ring->flags)) | |
e032afc8 AD |
4804 | olinfo_status |= tx_ring->reg_idx << 4; |
4805 | ||
4806 | /* insert L4 checksum */ | |
1d9daf45 AD |
4807 | olinfo_status |= IGB_SET_FLAG(tx_flags, |
4808 | IGB_TX_FLAGS_CSUM, | |
4809 | (E1000_TXD_POPTS_TXSM << 8)); | |
e032afc8 | 4810 | |
1d9daf45 AD |
4811 | /* insert IPv4 checksum */ |
4812 | olinfo_status |= IGB_SET_FLAG(tx_flags, | |
4813 | IGB_TX_FLAGS_IPV4, | |
4814 | (E1000_TXD_POPTS_IXSM << 8)); | |
e032afc8 | 4815 | |
7af40ad9 | 4816 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); |
e032afc8 AD |
4817 | } |
4818 | ||
6f19e12f DM |
4819 | static int __igb_maybe_stop_tx(struct igb_ring *tx_ring, const u16 size) |
4820 | { | |
4821 | struct net_device *netdev = tx_ring->netdev; | |
4822 | ||
4823 | netif_stop_subqueue(netdev, tx_ring->queue_index); | |
4824 | ||
4825 | /* Herbert's original patch had: | |
4826 | * smp_mb__after_netif_stop_queue(); | |
4827 | * but since that doesn't exist yet, just open code it. | |
4828 | */ | |
4829 | smp_mb(); | |
4830 | ||
4831 | /* We need to check again in a case another CPU has just | |
4832 | * made room available. | |
4833 | */ | |
4834 | if (igb_desc_unused(tx_ring) < size) | |
4835 | return -EBUSY; | |
4836 | ||
4837 | /* A reprieve! */ | |
4838 | netif_wake_subqueue(netdev, tx_ring->queue_index); | |
4839 | ||
4840 | u64_stats_update_begin(&tx_ring->tx_syncp2); | |
4841 | tx_ring->tx_stats.restart_queue2++; | |
4842 | u64_stats_update_end(&tx_ring->tx_syncp2); | |
4843 | ||
4844 | return 0; | |
4845 | } | |
4846 | ||
4847 | static inline int igb_maybe_stop_tx(struct igb_ring *tx_ring, const u16 size) | |
4848 | { | |
4849 | if (igb_desc_unused(tx_ring) >= size) | |
4850 | return 0; | |
4851 | return __igb_maybe_stop_tx(tx_ring, size); | |
4852 | } | |
4853 | ||
7af40ad9 AD |
4854 | static void igb_tx_map(struct igb_ring *tx_ring, |
4855 | struct igb_tx_buffer *first, | |
ebe42d16 | 4856 | const u8 hdr_len) |
9d5c8243 | 4857 | { |
7af40ad9 | 4858 | struct sk_buff *skb = first->skb; |
c9f14bf3 | 4859 | struct igb_tx_buffer *tx_buffer; |
ebe42d16 | 4860 | union e1000_adv_tx_desc *tx_desc; |
80d0759e | 4861 | struct skb_frag_struct *frag; |
ebe42d16 | 4862 | dma_addr_t dma; |
80d0759e | 4863 | unsigned int data_len, size; |
7af40ad9 | 4864 | u32 tx_flags = first->tx_flags; |
1d9daf45 | 4865 | u32 cmd_type = igb_tx_cmd_type(skb, tx_flags); |
ebe42d16 | 4866 | u16 i = tx_ring->next_to_use; |
ebe42d16 AD |
4867 | |
4868 | tx_desc = IGB_TX_DESC(tx_ring, i); | |
4869 | ||
80d0759e AD |
4870 | igb_tx_olinfo_status(tx_ring, tx_desc, tx_flags, skb->len - hdr_len); |
4871 | ||
4872 | size = skb_headlen(skb); | |
4873 | data_len = skb->data_len; | |
ebe42d16 AD |
4874 | |
4875 | dma = dma_map_single(tx_ring->dev, skb->data, size, DMA_TO_DEVICE); | |
9d5c8243 | 4876 | |
80d0759e AD |
4877 | tx_buffer = first; |
4878 | ||
4879 | for (frag = &skb_shinfo(skb)->frags[0];; frag++) { | |
4880 | if (dma_mapping_error(tx_ring->dev, dma)) | |
4881 | goto dma_error; | |
4882 | ||
4883 | /* record length, and DMA address */ | |
4884 | dma_unmap_len_set(tx_buffer, len, size); | |
4885 | dma_unmap_addr_set(tx_buffer, dma, dma); | |
4886 | ||
4887 | tx_desc->read.buffer_addr = cpu_to_le64(dma); | |
ebe42d16 | 4888 | |
ebe42d16 AD |
4889 | while (unlikely(size > IGB_MAX_DATA_PER_TXD)) { |
4890 | tx_desc->read.cmd_type_len = | |
1d9daf45 | 4891 | cpu_to_le32(cmd_type ^ IGB_MAX_DATA_PER_TXD); |
ebe42d16 AD |
4892 | |
4893 | i++; | |
4894 | tx_desc++; | |
4895 | if (i == tx_ring->count) { | |
4896 | tx_desc = IGB_TX_DESC(tx_ring, 0); | |
4897 | i = 0; | |
4898 | } | |
80d0759e | 4899 | tx_desc->read.olinfo_status = 0; |
ebe42d16 AD |
4900 | |
4901 | dma += IGB_MAX_DATA_PER_TXD; | |
4902 | size -= IGB_MAX_DATA_PER_TXD; | |
4903 | ||
ebe42d16 AD |
4904 | tx_desc->read.buffer_addr = cpu_to_le64(dma); |
4905 | } | |
4906 | ||
4907 | if (likely(!data_len)) | |
4908 | break; | |
2bbfebe2 | 4909 | |
1d9daf45 | 4910 | tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type ^ size); |
9d5c8243 | 4911 | |
65689fef | 4912 | i++; |
ebe42d16 AD |
4913 | tx_desc++; |
4914 | if (i == tx_ring->count) { | |
4915 | tx_desc = IGB_TX_DESC(tx_ring, 0); | |
65689fef | 4916 | i = 0; |
ebe42d16 | 4917 | } |
80d0759e | 4918 | tx_desc->read.olinfo_status = 0; |
65689fef | 4919 | |
9e903e08 | 4920 | size = skb_frag_size(frag); |
ebe42d16 AD |
4921 | data_len -= size; |
4922 | ||
4923 | dma = skb_frag_dma_map(tx_ring->dev, frag, 0, | |
80d0759e | 4924 | size, DMA_TO_DEVICE); |
6366ad33 | 4925 | |
c9f14bf3 | 4926 | tx_buffer = &tx_ring->tx_buffer_info[i]; |
9d5c8243 AK |
4927 | } |
4928 | ||
ebe42d16 | 4929 | /* write last descriptor with RS and EOP bits */ |
1d9daf45 AD |
4930 | cmd_type |= size | IGB_TXD_DCMD; |
4931 | tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type); | |
8542db05 | 4932 | |
80d0759e AD |
4933 | netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount); |
4934 | ||
8542db05 AD |
4935 | /* set the timestamp */ |
4936 | first->time_stamp = jiffies; | |
4937 | ||
b980ac18 | 4938 | /* Force memory writes to complete before letting h/w know there |
ebe42d16 AD |
4939 | * are new descriptors to fetch. (Only applicable for weak-ordered |
4940 | * memory model archs, such as IA-64). | |
4941 | * | |
4942 | * We also need this memory barrier to make certain all of the | |
4943 | * status bits have been updated before next_to_watch is written. | |
4944 | */ | |
4945 | wmb(); | |
4946 | ||
8542db05 | 4947 | /* set next_to_watch value indicating a packet is present */ |
ebe42d16 | 4948 | first->next_to_watch = tx_desc; |
9d5c8243 | 4949 | |
ebe42d16 AD |
4950 | i++; |
4951 | if (i == tx_ring->count) | |
4952 | i = 0; | |
6366ad33 | 4953 | |
ebe42d16 | 4954 | tx_ring->next_to_use = i; |
6366ad33 | 4955 | |
6f19e12f DM |
4956 | /* Make sure there is space in the ring for the next send. */ |
4957 | igb_maybe_stop_tx(tx_ring, DESC_NEEDED); | |
4958 | ||
4959 | if (netif_xmit_stopped(txring_txq(tx_ring)) || !skb->xmit_more) { | |
0b725a2c DM |
4960 | writel(i, tx_ring->tail); |
4961 | ||
4962 | /* we need this if more than one processor can write to our tail | |
4963 | * at a time, it synchronizes IO on IA64/Altix systems | |
4964 | */ | |
4965 | mmiowb(); | |
4966 | } | |
ebe42d16 AD |
4967 | return; |
4968 | ||
4969 | dma_error: | |
4970 | dev_err(tx_ring->dev, "TX DMA map failed\n"); | |
4971 | ||
4972 | /* clear dma mappings for failed tx_buffer_info map */ | |
4973 | for (;;) { | |
c9f14bf3 AD |
4974 | tx_buffer = &tx_ring->tx_buffer_info[i]; |
4975 | igb_unmap_and_free_tx_resource(tx_ring, tx_buffer); | |
4976 | if (tx_buffer == first) | |
ebe42d16 | 4977 | break; |
a77ff709 NN |
4978 | if (i == 0) |
4979 | i = tx_ring->count; | |
6366ad33 | 4980 | i--; |
6366ad33 AD |
4981 | } |
4982 | ||
9d5c8243 | 4983 | tx_ring->next_to_use = i; |
9d5c8243 AK |
4984 | } |
4985 | ||
cd392f5c AD |
4986 | netdev_tx_t igb_xmit_frame_ring(struct sk_buff *skb, |
4987 | struct igb_ring *tx_ring) | |
9d5c8243 | 4988 | { |
8542db05 | 4989 | struct igb_tx_buffer *first; |
ebe42d16 | 4990 | int tso; |
91d4ee33 | 4991 | u32 tx_flags = 0; |
2ee52ad4 | 4992 | unsigned short f; |
21ba6fe1 | 4993 | u16 count = TXD_USE_COUNT(skb_headlen(skb)); |
31f6adbb | 4994 | __be16 protocol = vlan_get_protocol(skb); |
91d4ee33 | 4995 | u8 hdr_len = 0; |
9d5c8243 | 4996 | |
21ba6fe1 AD |
4997 | /* need: 1 descriptor per page * PAGE_SIZE/IGB_MAX_DATA_PER_TXD, |
4998 | * + 1 desc for skb_headlen/IGB_MAX_DATA_PER_TXD, | |
9d5c8243 | 4999 | * + 2 desc gap to keep tail from touching head, |
9d5c8243 | 5000 | * + 1 desc for context descriptor, |
21ba6fe1 AD |
5001 | * otherwise try next time |
5002 | */ | |
2ee52ad4 AD |
5003 | for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) |
5004 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size); | |
21ba6fe1 AD |
5005 | |
5006 | if (igb_maybe_stop_tx(tx_ring, count + 3)) { | |
9d5c8243 | 5007 | /* this is a hard error */ |
9d5c8243 AK |
5008 | return NETDEV_TX_BUSY; |
5009 | } | |
33af6bcc | 5010 | |
7af40ad9 AD |
5011 | /* record the location of the first descriptor for this packet */ |
5012 | first = &tx_ring->tx_buffer_info[tx_ring->next_to_use]; | |
5013 | first->skb = skb; | |
5014 | first->bytecount = skb->len; | |
5015 | first->gso_segs = 1; | |
5016 | ||
b646c22e AD |
5017 | if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) { |
5018 | struct igb_adapter *adapter = netdev_priv(tx_ring->netdev); | |
1f6e8178 | 5019 | |
ed4420a3 JK |
5020 | if (!test_and_set_bit_lock(__IGB_PTP_TX_IN_PROGRESS, |
5021 | &adapter->state)) { | |
b646c22e AD |
5022 | skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; |
5023 | tx_flags |= IGB_TX_FLAGS_TSTAMP; | |
5024 | ||
5025 | adapter->ptp_tx_skb = skb_get(skb); | |
5026 | adapter->ptp_tx_start = jiffies; | |
5027 | if (adapter->hw.mac.type == e1000_82576) | |
5028 | schedule_work(&adapter->ptp_tx_work); | |
5029 | } | |
33af6bcc | 5030 | } |
9d5c8243 | 5031 | |
afc835d1 JK |
5032 | skb_tx_timestamp(skb); |
5033 | ||
df8a39de | 5034 | if (skb_vlan_tag_present(skb)) { |
9d5c8243 | 5035 | tx_flags |= IGB_TX_FLAGS_VLAN; |
df8a39de | 5036 | tx_flags |= (skb_vlan_tag_get(skb) << IGB_TX_FLAGS_VLAN_SHIFT); |
9d5c8243 AK |
5037 | } |
5038 | ||
7af40ad9 AD |
5039 | /* record initial flags and protocol */ |
5040 | first->tx_flags = tx_flags; | |
5041 | first->protocol = protocol; | |
cdfd01fc | 5042 | |
7af40ad9 AD |
5043 | tso = igb_tso(tx_ring, first, &hdr_len); |
5044 | if (tso < 0) | |
7d13a7d0 | 5045 | goto out_drop; |
7af40ad9 AD |
5046 | else if (!tso) |
5047 | igb_tx_csum(tx_ring, first); | |
9d5c8243 | 5048 | |
7af40ad9 | 5049 | igb_tx_map(tx_ring, first, hdr_len); |
85ad76b2 | 5050 | |
9d5c8243 | 5051 | return NETDEV_TX_OK; |
7d13a7d0 AD |
5052 | |
5053 | out_drop: | |
7af40ad9 AD |
5054 | igb_unmap_and_free_tx_resource(tx_ring, first); |
5055 | ||
7d13a7d0 | 5056 | return NETDEV_TX_OK; |
9d5c8243 AK |
5057 | } |
5058 | ||
0b725a2c DM |
5059 | static inline struct igb_ring *igb_tx_queue_mapping(struct igb_adapter *adapter, |
5060 | struct sk_buff *skb) | |
1cc3bd87 | 5061 | { |
0b725a2c DM |
5062 | unsigned int r_idx = skb->queue_mapping; |
5063 | ||
1cc3bd87 AD |
5064 | if (r_idx >= adapter->num_tx_queues) |
5065 | r_idx = r_idx % adapter->num_tx_queues; | |
5066 | ||
5067 | return adapter->tx_ring[r_idx]; | |
5068 | } | |
5069 | ||
cd392f5c AD |
5070 | static netdev_tx_t igb_xmit_frame(struct sk_buff *skb, |
5071 | struct net_device *netdev) | |
9d5c8243 AK |
5072 | { |
5073 | struct igb_adapter *adapter = netdev_priv(netdev); | |
b1a436c3 AD |
5074 | |
5075 | if (test_bit(__IGB_DOWN, &adapter->state)) { | |
5076 | dev_kfree_skb_any(skb); | |
5077 | return NETDEV_TX_OK; | |
5078 | } | |
5079 | ||
5080 | if (skb->len <= 0) { | |
5081 | dev_kfree_skb_any(skb); | |
5082 | return NETDEV_TX_OK; | |
5083 | } | |
5084 | ||
b980ac18 | 5085 | /* The minimum packet size with TCTL.PSP set is 17 so pad the skb |
1cc3bd87 AD |
5086 | * in order to meet this minimum size requirement. |
5087 | */ | |
a94d9e22 AD |
5088 | if (skb_put_padto(skb, 17)) |
5089 | return NETDEV_TX_OK; | |
9d5c8243 | 5090 | |
1cc3bd87 | 5091 | return igb_xmit_frame_ring(skb, igb_tx_queue_mapping(adapter, skb)); |
9d5c8243 AK |
5092 | } |
5093 | ||
5094 | /** | |
b980ac18 JK |
5095 | * igb_tx_timeout - Respond to a Tx Hang |
5096 | * @netdev: network interface device structure | |
9d5c8243 AK |
5097 | **/ |
5098 | static void igb_tx_timeout(struct net_device *netdev) | |
5099 | { | |
5100 | struct igb_adapter *adapter = netdev_priv(netdev); | |
5101 | struct e1000_hw *hw = &adapter->hw; | |
5102 | ||
5103 | /* Do the reset outside of interrupt context */ | |
5104 | adapter->tx_timeout_count++; | |
f7ba205e | 5105 | |
06218a8d | 5106 | if (hw->mac.type >= e1000_82580) |
55cac248 AD |
5107 | hw->dev_spec._82575.global_device_reset = true; |
5108 | ||
9d5c8243 | 5109 | schedule_work(&adapter->reset_task); |
265de409 AD |
5110 | wr32(E1000_EICS, |
5111 | (adapter->eims_enable_mask & ~adapter->eims_other)); | |
9d5c8243 AK |
5112 | } |
5113 | ||
5114 | static void igb_reset_task(struct work_struct *work) | |
5115 | { | |
5116 | struct igb_adapter *adapter; | |
5117 | adapter = container_of(work, struct igb_adapter, reset_task); | |
5118 | ||
c97ec42a TI |
5119 | igb_dump(adapter); |
5120 | netdev_err(adapter->netdev, "Reset adapter\n"); | |
9d5c8243 AK |
5121 | igb_reinit_locked(adapter); |
5122 | } | |
5123 | ||
5124 | /** | |
b980ac18 JK |
5125 | * igb_get_stats64 - Get System Network Statistics |
5126 | * @netdev: network interface device structure | |
5127 | * @stats: rtnl_link_stats64 pointer | |
9d5c8243 | 5128 | **/ |
12dcd86b | 5129 | static struct rtnl_link_stats64 *igb_get_stats64(struct net_device *netdev, |
b980ac18 | 5130 | struct rtnl_link_stats64 *stats) |
9d5c8243 | 5131 | { |
12dcd86b ED |
5132 | struct igb_adapter *adapter = netdev_priv(netdev); |
5133 | ||
5134 | spin_lock(&adapter->stats64_lock); | |
5135 | igb_update_stats(adapter, &adapter->stats64); | |
5136 | memcpy(stats, &adapter->stats64, sizeof(*stats)); | |
5137 | spin_unlock(&adapter->stats64_lock); | |
5138 | ||
5139 | return stats; | |
9d5c8243 AK |
5140 | } |
5141 | ||
5142 | /** | |
b980ac18 JK |
5143 | * igb_change_mtu - Change the Maximum Transfer Unit |
5144 | * @netdev: network interface device structure | |
5145 | * @new_mtu: new value for maximum frame size | |
9d5c8243 | 5146 | * |
b980ac18 | 5147 | * Returns 0 on success, negative on failure |
9d5c8243 AK |
5148 | **/ |
5149 | static int igb_change_mtu(struct net_device *netdev, int new_mtu) | |
5150 | { | |
5151 | struct igb_adapter *adapter = netdev_priv(netdev); | |
090b1795 | 5152 | struct pci_dev *pdev = adapter->pdev; |
153285f9 | 5153 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; |
9d5c8243 | 5154 | |
c809d227 | 5155 | if ((new_mtu < 68) || (max_frame > MAX_JUMBO_FRAME_SIZE)) { |
090b1795 | 5156 | dev_err(&pdev->dev, "Invalid MTU setting\n"); |
9d5c8243 AK |
5157 | return -EINVAL; |
5158 | } | |
5159 | ||
153285f9 | 5160 | #define MAX_STD_JUMBO_FRAME_SIZE 9238 |
9d5c8243 | 5161 | if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { |
090b1795 | 5162 | dev_err(&pdev->dev, "MTU > 9216 not supported.\n"); |
9d5c8243 AK |
5163 | return -EINVAL; |
5164 | } | |
5165 | ||
2ccd994c AD |
5166 | /* adjust max frame to be at least the size of a standard frame */ |
5167 | if (max_frame < (ETH_FRAME_LEN + ETH_FCS_LEN)) | |
5168 | max_frame = ETH_FRAME_LEN + ETH_FCS_LEN; | |
5169 | ||
9d5c8243 | 5170 | while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) |
0d451e79 | 5171 | usleep_range(1000, 2000); |
73cd78f1 | 5172 | |
9d5c8243 AK |
5173 | /* igb_down has a dependency on max_frame_size */ |
5174 | adapter->max_frame_size = max_frame; | |
559e9c49 | 5175 | |
4c844851 AD |
5176 | if (netif_running(netdev)) |
5177 | igb_down(adapter); | |
9d5c8243 | 5178 | |
090b1795 | 5179 | dev_info(&pdev->dev, "changing MTU from %d to %d\n", |
9d5c8243 AK |
5180 | netdev->mtu, new_mtu); |
5181 | netdev->mtu = new_mtu; | |
5182 | ||
5183 | if (netif_running(netdev)) | |
5184 | igb_up(adapter); | |
5185 | else | |
5186 | igb_reset(adapter); | |
5187 | ||
5188 | clear_bit(__IGB_RESETTING, &adapter->state); | |
5189 | ||
5190 | return 0; | |
5191 | } | |
5192 | ||
5193 | /** | |
b980ac18 JK |
5194 | * igb_update_stats - Update the board statistics counters |
5195 | * @adapter: board private structure | |
9d5c8243 | 5196 | **/ |
12dcd86b ED |
5197 | void igb_update_stats(struct igb_adapter *adapter, |
5198 | struct rtnl_link_stats64 *net_stats) | |
9d5c8243 AK |
5199 | { |
5200 | struct e1000_hw *hw = &adapter->hw; | |
5201 | struct pci_dev *pdev = adapter->pdev; | |
fa3d9a6d | 5202 | u32 reg, mpc; |
3f9c0164 AD |
5203 | int i; |
5204 | u64 bytes, packets; | |
12dcd86b ED |
5205 | unsigned int start; |
5206 | u64 _bytes, _packets; | |
9d5c8243 | 5207 | |
b980ac18 | 5208 | /* Prevent stats update while adapter is being reset, or if the pci |
9d5c8243 AK |
5209 | * connection is down. |
5210 | */ | |
5211 | if (adapter->link_speed == 0) | |
5212 | return; | |
5213 | if (pci_channel_offline(pdev)) | |
5214 | return; | |
5215 | ||
3f9c0164 AD |
5216 | bytes = 0; |
5217 | packets = 0; | |
7f90128e AA |
5218 | |
5219 | rcu_read_lock(); | |
3f9c0164 | 5220 | for (i = 0; i < adapter->num_rx_queues; i++) { |
3025a446 | 5221 | struct igb_ring *ring = adapter->rx_ring[i]; |
e66c083a TF |
5222 | u32 rqdpc = rd32(E1000_RQDPC(i)); |
5223 | if (hw->mac.type >= e1000_i210) | |
5224 | wr32(E1000_RQDPC(i), 0); | |
12dcd86b | 5225 | |
ae1c07a6 AD |
5226 | if (rqdpc) { |
5227 | ring->rx_stats.drops += rqdpc; | |
5228 | net_stats->rx_fifo_errors += rqdpc; | |
5229 | } | |
12dcd86b ED |
5230 | |
5231 | do { | |
57a7744e | 5232 | start = u64_stats_fetch_begin_irq(&ring->rx_syncp); |
12dcd86b ED |
5233 | _bytes = ring->rx_stats.bytes; |
5234 | _packets = ring->rx_stats.packets; | |
57a7744e | 5235 | } while (u64_stats_fetch_retry_irq(&ring->rx_syncp, start)); |
12dcd86b ED |
5236 | bytes += _bytes; |
5237 | packets += _packets; | |
3f9c0164 AD |
5238 | } |
5239 | ||
128e45eb AD |
5240 | net_stats->rx_bytes = bytes; |
5241 | net_stats->rx_packets = packets; | |
3f9c0164 AD |
5242 | |
5243 | bytes = 0; | |
5244 | packets = 0; | |
5245 | for (i = 0; i < adapter->num_tx_queues; i++) { | |
3025a446 | 5246 | struct igb_ring *ring = adapter->tx_ring[i]; |
12dcd86b | 5247 | do { |
57a7744e | 5248 | start = u64_stats_fetch_begin_irq(&ring->tx_syncp); |
12dcd86b ED |
5249 | _bytes = ring->tx_stats.bytes; |
5250 | _packets = ring->tx_stats.packets; | |
57a7744e | 5251 | } while (u64_stats_fetch_retry_irq(&ring->tx_syncp, start)); |
12dcd86b ED |
5252 | bytes += _bytes; |
5253 | packets += _packets; | |
3f9c0164 | 5254 | } |
128e45eb AD |
5255 | net_stats->tx_bytes = bytes; |
5256 | net_stats->tx_packets = packets; | |
7f90128e | 5257 | rcu_read_unlock(); |
3f9c0164 AD |
5258 | |
5259 | /* read stats registers */ | |
9d5c8243 AK |
5260 | adapter->stats.crcerrs += rd32(E1000_CRCERRS); |
5261 | adapter->stats.gprc += rd32(E1000_GPRC); | |
5262 | adapter->stats.gorc += rd32(E1000_GORCL); | |
5263 | rd32(E1000_GORCH); /* clear GORCL */ | |
5264 | adapter->stats.bprc += rd32(E1000_BPRC); | |
5265 | adapter->stats.mprc += rd32(E1000_MPRC); | |
5266 | adapter->stats.roc += rd32(E1000_ROC); | |
5267 | ||
5268 | adapter->stats.prc64 += rd32(E1000_PRC64); | |
5269 | adapter->stats.prc127 += rd32(E1000_PRC127); | |
5270 | adapter->stats.prc255 += rd32(E1000_PRC255); | |
5271 | adapter->stats.prc511 += rd32(E1000_PRC511); | |
5272 | adapter->stats.prc1023 += rd32(E1000_PRC1023); | |
5273 | adapter->stats.prc1522 += rd32(E1000_PRC1522); | |
5274 | adapter->stats.symerrs += rd32(E1000_SYMERRS); | |
5275 | adapter->stats.sec += rd32(E1000_SEC); | |
5276 | ||
fa3d9a6d MW |
5277 | mpc = rd32(E1000_MPC); |
5278 | adapter->stats.mpc += mpc; | |
5279 | net_stats->rx_fifo_errors += mpc; | |
9d5c8243 AK |
5280 | adapter->stats.scc += rd32(E1000_SCC); |
5281 | adapter->stats.ecol += rd32(E1000_ECOL); | |
5282 | adapter->stats.mcc += rd32(E1000_MCC); | |
5283 | adapter->stats.latecol += rd32(E1000_LATECOL); | |
5284 | adapter->stats.dc += rd32(E1000_DC); | |
5285 | adapter->stats.rlec += rd32(E1000_RLEC); | |
5286 | adapter->stats.xonrxc += rd32(E1000_XONRXC); | |
5287 | adapter->stats.xontxc += rd32(E1000_XONTXC); | |
5288 | adapter->stats.xoffrxc += rd32(E1000_XOFFRXC); | |
5289 | adapter->stats.xofftxc += rd32(E1000_XOFFTXC); | |
5290 | adapter->stats.fcruc += rd32(E1000_FCRUC); | |
5291 | adapter->stats.gptc += rd32(E1000_GPTC); | |
5292 | adapter->stats.gotc += rd32(E1000_GOTCL); | |
5293 | rd32(E1000_GOTCH); /* clear GOTCL */ | |
fa3d9a6d | 5294 | adapter->stats.rnbc += rd32(E1000_RNBC); |
9d5c8243 AK |
5295 | adapter->stats.ruc += rd32(E1000_RUC); |
5296 | adapter->stats.rfc += rd32(E1000_RFC); | |
5297 | adapter->stats.rjc += rd32(E1000_RJC); | |
5298 | adapter->stats.tor += rd32(E1000_TORH); | |
5299 | adapter->stats.tot += rd32(E1000_TOTH); | |
5300 | adapter->stats.tpr += rd32(E1000_TPR); | |
5301 | ||
5302 | adapter->stats.ptc64 += rd32(E1000_PTC64); | |
5303 | adapter->stats.ptc127 += rd32(E1000_PTC127); | |
5304 | adapter->stats.ptc255 += rd32(E1000_PTC255); | |
5305 | adapter->stats.ptc511 += rd32(E1000_PTC511); | |
5306 | adapter->stats.ptc1023 += rd32(E1000_PTC1023); | |
5307 | adapter->stats.ptc1522 += rd32(E1000_PTC1522); | |
5308 | ||
5309 | adapter->stats.mptc += rd32(E1000_MPTC); | |
5310 | adapter->stats.bptc += rd32(E1000_BPTC); | |
5311 | ||
2d0b0f69 NN |
5312 | adapter->stats.tpt += rd32(E1000_TPT); |
5313 | adapter->stats.colc += rd32(E1000_COLC); | |
9d5c8243 AK |
5314 | |
5315 | adapter->stats.algnerrc += rd32(E1000_ALGNERRC); | |
43915c7c NN |
5316 | /* read internal phy specific stats */ |
5317 | reg = rd32(E1000_CTRL_EXT); | |
5318 | if (!(reg & E1000_CTRL_EXT_LINK_MODE_MASK)) { | |
5319 | adapter->stats.rxerrc += rd32(E1000_RXERRC); | |
3dbdf969 CW |
5320 | |
5321 | /* this stat has invalid values on i210/i211 */ | |
5322 | if ((hw->mac.type != e1000_i210) && | |
5323 | (hw->mac.type != e1000_i211)) | |
5324 | adapter->stats.tncrs += rd32(E1000_TNCRS); | |
43915c7c NN |
5325 | } |
5326 | ||
9d5c8243 AK |
5327 | adapter->stats.tsctc += rd32(E1000_TSCTC); |
5328 | adapter->stats.tsctfc += rd32(E1000_TSCTFC); | |
5329 | ||
5330 | adapter->stats.iac += rd32(E1000_IAC); | |
5331 | adapter->stats.icrxoc += rd32(E1000_ICRXOC); | |
5332 | adapter->stats.icrxptc += rd32(E1000_ICRXPTC); | |
5333 | adapter->stats.icrxatc += rd32(E1000_ICRXATC); | |
5334 | adapter->stats.ictxptc += rd32(E1000_ICTXPTC); | |
5335 | adapter->stats.ictxatc += rd32(E1000_ICTXATC); | |
5336 | adapter->stats.ictxqec += rd32(E1000_ICTXQEC); | |
5337 | adapter->stats.ictxqmtc += rd32(E1000_ICTXQMTC); | |
5338 | adapter->stats.icrxdmtc += rd32(E1000_ICRXDMTC); | |
5339 | ||
5340 | /* Fill out the OS statistics structure */ | |
128e45eb AD |
5341 | net_stats->multicast = adapter->stats.mprc; |
5342 | net_stats->collisions = adapter->stats.colc; | |
9d5c8243 AK |
5343 | |
5344 | /* Rx Errors */ | |
5345 | ||
5346 | /* RLEC on some newer hardware can be incorrect so build | |
b980ac18 JK |
5347 | * our own version based on RUC and ROC |
5348 | */ | |
128e45eb | 5349 | net_stats->rx_errors = adapter->stats.rxerrc + |
9d5c8243 AK |
5350 | adapter->stats.crcerrs + adapter->stats.algnerrc + |
5351 | adapter->stats.ruc + adapter->stats.roc + | |
5352 | adapter->stats.cexterr; | |
128e45eb AD |
5353 | net_stats->rx_length_errors = adapter->stats.ruc + |
5354 | adapter->stats.roc; | |
5355 | net_stats->rx_crc_errors = adapter->stats.crcerrs; | |
5356 | net_stats->rx_frame_errors = adapter->stats.algnerrc; | |
5357 | net_stats->rx_missed_errors = adapter->stats.mpc; | |
9d5c8243 AK |
5358 | |
5359 | /* Tx Errors */ | |
128e45eb AD |
5360 | net_stats->tx_errors = adapter->stats.ecol + |
5361 | adapter->stats.latecol; | |
5362 | net_stats->tx_aborted_errors = adapter->stats.ecol; | |
5363 | net_stats->tx_window_errors = adapter->stats.latecol; | |
5364 | net_stats->tx_carrier_errors = adapter->stats.tncrs; | |
9d5c8243 AK |
5365 | |
5366 | /* Tx Dropped needs to be maintained elsewhere */ | |
5367 | ||
9d5c8243 AK |
5368 | /* Management Stats */ |
5369 | adapter->stats.mgptc += rd32(E1000_MGTPTC); | |
5370 | adapter->stats.mgprc += rd32(E1000_MGTPRC); | |
5371 | adapter->stats.mgpdc += rd32(E1000_MGTPDC); | |
0a915b95 CW |
5372 | |
5373 | /* OS2BMC Stats */ | |
5374 | reg = rd32(E1000_MANC); | |
5375 | if (reg & E1000_MANC_EN_BMC2OS) { | |
5376 | adapter->stats.o2bgptc += rd32(E1000_O2BGPTC); | |
5377 | adapter->stats.o2bspc += rd32(E1000_O2BSPC); | |
5378 | adapter->stats.b2ospc += rd32(E1000_B2OSPC); | |
5379 | adapter->stats.b2ogprc += rd32(E1000_B2OGPRC); | |
5380 | } | |
9d5c8243 AK |
5381 | } |
5382 | ||
61d7f75f RC |
5383 | static void igb_tsync_interrupt(struct igb_adapter *adapter) |
5384 | { | |
5385 | struct e1000_hw *hw = &adapter->hw; | |
00c65578 | 5386 | struct ptp_clock_event event; |
720db4ff RC |
5387 | struct timespec ts; |
5388 | u32 ack = 0, tsauxc, sec, nsec, tsicr = rd32(E1000_TSICR); | |
00c65578 RC |
5389 | |
5390 | if (tsicr & TSINTR_SYS_WRAP) { | |
5391 | event.type = PTP_CLOCK_PPS; | |
5392 | if (adapter->ptp_caps.pps) | |
5393 | ptp_clock_event(adapter->ptp_clock, &event); | |
5394 | else | |
5395 | dev_err(&adapter->pdev->dev, "unexpected SYS WRAP"); | |
5396 | ack |= TSINTR_SYS_WRAP; | |
5397 | } | |
61d7f75f RC |
5398 | |
5399 | if (tsicr & E1000_TSICR_TXTS) { | |
61d7f75f RC |
5400 | /* retrieve hardware timestamp */ |
5401 | schedule_work(&adapter->ptp_tx_work); | |
00c65578 | 5402 | ack |= E1000_TSICR_TXTS; |
61d7f75f | 5403 | } |
00c65578 | 5404 | |
720db4ff RC |
5405 | if (tsicr & TSINTR_TT0) { |
5406 | spin_lock(&adapter->tmreg_lock); | |
5407 | ts = timespec_add(adapter->perout[0].start, | |
5408 | adapter->perout[0].period); | |
5409 | wr32(E1000_TRGTTIML0, ts.tv_nsec); | |
5410 | wr32(E1000_TRGTTIMH0, ts.tv_sec); | |
5411 | tsauxc = rd32(E1000_TSAUXC); | |
5412 | tsauxc |= TSAUXC_EN_TT0; | |
5413 | wr32(E1000_TSAUXC, tsauxc); | |
5414 | adapter->perout[0].start = ts; | |
5415 | spin_unlock(&adapter->tmreg_lock); | |
5416 | ack |= TSINTR_TT0; | |
5417 | } | |
5418 | ||
5419 | if (tsicr & TSINTR_TT1) { | |
5420 | spin_lock(&adapter->tmreg_lock); | |
5421 | ts = timespec_add(adapter->perout[1].start, | |
5422 | adapter->perout[1].period); | |
5423 | wr32(E1000_TRGTTIML1, ts.tv_nsec); | |
5424 | wr32(E1000_TRGTTIMH1, ts.tv_sec); | |
5425 | tsauxc = rd32(E1000_TSAUXC); | |
5426 | tsauxc |= TSAUXC_EN_TT1; | |
5427 | wr32(E1000_TSAUXC, tsauxc); | |
5428 | adapter->perout[1].start = ts; | |
5429 | spin_unlock(&adapter->tmreg_lock); | |
5430 | ack |= TSINTR_TT1; | |
5431 | } | |
5432 | ||
5433 | if (tsicr & TSINTR_AUTT0) { | |
5434 | nsec = rd32(E1000_AUXSTMPL0); | |
5435 | sec = rd32(E1000_AUXSTMPH0); | |
5436 | event.type = PTP_CLOCK_EXTTS; | |
5437 | event.index = 0; | |
5438 | event.timestamp = sec * 1000000000ULL + nsec; | |
5439 | ptp_clock_event(adapter->ptp_clock, &event); | |
5440 | ack |= TSINTR_AUTT0; | |
5441 | } | |
5442 | ||
5443 | if (tsicr & TSINTR_AUTT1) { | |
5444 | nsec = rd32(E1000_AUXSTMPL1); | |
5445 | sec = rd32(E1000_AUXSTMPH1); | |
5446 | event.type = PTP_CLOCK_EXTTS; | |
5447 | event.index = 1; | |
5448 | event.timestamp = sec * 1000000000ULL + nsec; | |
5449 | ptp_clock_event(adapter->ptp_clock, &event); | |
5450 | ack |= TSINTR_AUTT1; | |
5451 | } | |
5452 | ||
00c65578 RC |
5453 | /* acknowledge the interrupts */ |
5454 | wr32(E1000_TSICR, ack); | |
61d7f75f RC |
5455 | } |
5456 | ||
9d5c8243 AK |
5457 | static irqreturn_t igb_msix_other(int irq, void *data) |
5458 | { | |
047e0030 | 5459 | struct igb_adapter *adapter = data; |
9d5c8243 | 5460 | struct e1000_hw *hw = &adapter->hw; |
844290e5 | 5461 | u32 icr = rd32(E1000_ICR); |
844290e5 | 5462 | /* reading ICR causes bit 31 of EICR to be cleared */ |
dda0e083 | 5463 | |
7f081d40 AD |
5464 | if (icr & E1000_ICR_DRSTA) |
5465 | schedule_work(&adapter->reset_task); | |
5466 | ||
047e0030 | 5467 | if (icr & E1000_ICR_DOUTSYNC) { |
dda0e083 AD |
5468 | /* HW is reporting DMA is out of sync */ |
5469 | adapter->stats.doosync++; | |
13800469 GR |
5470 | /* The DMA Out of Sync is also indication of a spoof event |
5471 | * in IOV mode. Check the Wrong VM Behavior register to | |
b980ac18 JK |
5472 | * see if it is really a spoof event. |
5473 | */ | |
13800469 | 5474 | igb_check_wvbr(adapter); |
dda0e083 | 5475 | } |
eebbbdba | 5476 | |
4ae196df AD |
5477 | /* Check for a mailbox event */ |
5478 | if (icr & E1000_ICR_VMMB) | |
5479 | igb_msg_task(adapter); | |
5480 | ||
5481 | if (icr & E1000_ICR_LSC) { | |
5482 | hw->mac.get_link_status = 1; | |
5483 | /* guard against interrupt when we're going down */ | |
5484 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
5485 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
5486 | } | |
5487 | ||
61d7f75f RC |
5488 | if (icr & E1000_ICR_TS) |
5489 | igb_tsync_interrupt(adapter); | |
1f6e8178 | 5490 | |
844290e5 | 5491 | wr32(E1000_EIMS, adapter->eims_other); |
9d5c8243 AK |
5492 | |
5493 | return IRQ_HANDLED; | |
5494 | } | |
5495 | ||
047e0030 | 5496 | static void igb_write_itr(struct igb_q_vector *q_vector) |
9d5c8243 | 5497 | { |
26b39276 | 5498 | struct igb_adapter *adapter = q_vector->adapter; |
047e0030 | 5499 | u32 itr_val = q_vector->itr_val & 0x7FFC; |
9d5c8243 | 5500 | |
047e0030 AD |
5501 | if (!q_vector->set_itr) |
5502 | return; | |
73cd78f1 | 5503 | |
047e0030 AD |
5504 | if (!itr_val) |
5505 | itr_val = 0x4; | |
661086df | 5506 | |
26b39276 AD |
5507 | if (adapter->hw.mac.type == e1000_82575) |
5508 | itr_val |= itr_val << 16; | |
661086df | 5509 | else |
0ba82994 | 5510 | itr_val |= E1000_EITR_CNT_IGNR; |
661086df | 5511 | |
047e0030 AD |
5512 | writel(itr_val, q_vector->itr_register); |
5513 | q_vector->set_itr = 0; | |
6eb5a7f1 AD |
5514 | } |
5515 | ||
047e0030 | 5516 | static irqreturn_t igb_msix_ring(int irq, void *data) |
9d5c8243 | 5517 | { |
047e0030 | 5518 | struct igb_q_vector *q_vector = data; |
9d5c8243 | 5519 | |
047e0030 AD |
5520 | /* Write the ITR value calculated from the previous interrupt. */ |
5521 | igb_write_itr(q_vector); | |
9d5c8243 | 5522 | |
047e0030 | 5523 | napi_schedule(&q_vector->napi); |
844290e5 | 5524 | |
047e0030 | 5525 | return IRQ_HANDLED; |
fe4506b6 JC |
5526 | } |
5527 | ||
421e02f0 | 5528 | #ifdef CONFIG_IGB_DCA |
6a05004a AD |
5529 | static void igb_update_tx_dca(struct igb_adapter *adapter, |
5530 | struct igb_ring *tx_ring, | |
5531 | int cpu) | |
5532 | { | |
5533 | struct e1000_hw *hw = &adapter->hw; | |
5534 | u32 txctrl = dca3_get_tag(tx_ring->dev, cpu); | |
5535 | ||
5536 | if (hw->mac.type != e1000_82575) | |
5537 | txctrl <<= E1000_DCA_TXCTRL_CPUID_SHIFT; | |
5538 | ||
b980ac18 | 5539 | /* We can enable relaxed ordering for reads, but not writes when |
6a05004a AD |
5540 | * DCA is enabled. This is due to a known issue in some chipsets |
5541 | * which will cause the DCA tag to be cleared. | |
5542 | */ | |
5543 | txctrl |= E1000_DCA_TXCTRL_DESC_RRO_EN | | |
5544 | E1000_DCA_TXCTRL_DATA_RRO_EN | | |
5545 | E1000_DCA_TXCTRL_DESC_DCA_EN; | |
5546 | ||
5547 | wr32(E1000_DCA_TXCTRL(tx_ring->reg_idx), txctrl); | |
5548 | } | |
5549 | ||
5550 | static void igb_update_rx_dca(struct igb_adapter *adapter, | |
5551 | struct igb_ring *rx_ring, | |
5552 | int cpu) | |
5553 | { | |
5554 | struct e1000_hw *hw = &adapter->hw; | |
5555 | u32 rxctrl = dca3_get_tag(&adapter->pdev->dev, cpu); | |
5556 | ||
5557 | if (hw->mac.type != e1000_82575) | |
5558 | rxctrl <<= E1000_DCA_RXCTRL_CPUID_SHIFT; | |
5559 | ||
b980ac18 | 5560 | /* We can enable relaxed ordering for reads, but not writes when |
6a05004a AD |
5561 | * DCA is enabled. This is due to a known issue in some chipsets |
5562 | * which will cause the DCA tag to be cleared. | |
5563 | */ | |
5564 | rxctrl |= E1000_DCA_RXCTRL_DESC_RRO_EN | | |
5565 | E1000_DCA_RXCTRL_DESC_DCA_EN; | |
5566 | ||
5567 | wr32(E1000_DCA_RXCTRL(rx_ring->reg_idx), rxctrl); | |
5568 | } | |
5569 | ||
047e0030 | 5570 | static void igb_update_dca(struct igb_q_vector *q_vector) |
fe4506b6 | 5571 | { |
047e0030 | 5572 | struct igb_adapter *adapter = q_vector->adapter; |
fe4506b6 | 5573 | int cpu = get_cpu(); |
fe4506b6 | 5574 | |
047e0030 AD |
5575 | if (q_vector->cpu == cpu) |
5576 | goto out_no_update; | |
5577 | ||
6a05004a AD |
5578 | if (q_vector->tx.ring) |
5579 | igb_update_tx_dca(adapter, q_vector->tx.ring, cpu); | |
5580 | ||
5581 | if (q_vector->rx.ring) | |
5582 | igb_update_rx_dca(adapter, q_vector->rx.ring, cpu); | |
5583 | ||
047e0030 AD |
5584 | q_vector->cpu = cpu; |
5585 | out_no_update: | |
fe4506b6 JC |
5586 | put_cpu(); |
5587 | } | |
5588 | ||
5589 | static void igb_setup_dca(struct igb_adapter *adapter) | |
5590 | { | |
7e0e99ef | 5591 | struct e1000_hw *hw = &adapter->hw; |
fe4506b6 JC |
5592 | int i; |
5593 | ||
7dfc16fa | 5594 | if (!(adapter->flags & IGB_FLAG_DCA_ENABLED)) |
fe4506b6 JC |
5595 | return; |
5596 | ||
7e0e99ef AD |
5597 | /* Always use CB2 mode, difference is masked in the CB driver. */ |
5598 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_CB2); | |
5599 | ||
047e0030 | 5600 | for (i = 0; i < adapter->num_q_vectors; i++) { |
26b39276 AD |
5601 | adapter->q_vector[i]->cpu = -1; |
5602 | igb_update_dca(adapter->q_vector[i]); | |
fe4506b6 JC |
5603 | } |
5604 | } | |
5605 | ||
5606 | static int __igb_notify_dca(struct device *dev, void *data) | |
5607 | { | |
5608 | struct net_device *netdev = dev_get_drvdata(dev); | |
5609 | struct igb_adapter *adapter = netdev_priv(netdev); | |
090b1795 | 5610 | struct pci_dev *pdev = adapter->pdev; |
fe4506b6 JC |
5611 | struct e1000_hw *hw = &adapter->hw; |
5612 | unsigned long event = *(unsigned long *)data; | |
5613 | ||
5614 | switch (event) { | |
5615 | case DCA_PROVIDER_ADD: | |
5616 | /* if already enabled, don't do it again */ | |
7dfc16fa | 5617 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) |
fe4506b6 | 5618 | break; |
fe4506b6 | 5619 | if (dca_add_requester(dev) == 0) { |
bbd98fe4 | 5620 | adapter->flags |= IGB_FLAG_DCA_ENABLED; |
090b1795 | 5621 | dev_info(&pdev->dev, "DCA enabled\n"); |
fe4506b6 JC |
5622 | igb_setup_dca(adapter); |
5623 | break; | |
5624 | } | |
5625 | /* Fall Through since DCA is disabled. */ | |
5626 | case DCA_PROVIDER_REMOVE: | |
7dfc16fa | 5627 | if (adapter->flags & IGB_FLAG_DCA_ENABLED) { |
fe4506b6 | 5628 | /* without this a class_device is left |
b980ac18 JK |
5629 | * hanging around in the sysfs model |
5630 | */ | |
fe4506b6 | 5631 | dca_remove_requester(dev); |
090b1795 | 5632 | dev_info(&pdev->dev, "DCA disabled\n"); |
7dfc16fa | 5633 | adapter->flags &= ~IGB_FLAG_DCA_ENABLED; |
cbd347ad | 5634 | wr32(E1000_DCA_CTRL, E1000_DCA_CTRL_DCA_MODE_DISABLE); |
fe4506b6 JC |
5635 | } |
5636 | break; | |
5637 | } | |
bbd98fe4 | 5638 | |
fe4506b6 | 5639 | return 0; |
9d5c8243 AK |
5640 | } |
5641 | ||
fe4506b6 | 5642 | static int igb_notify_dca(struct notifier_block *nb, unsigned long event, |
b980ac18 | 5643 | void *p) |
fe4506b6 JC |
5644 | { |
5645 | int ret_val; | |
5646 | ||
5647 | ret_val = driver_for_each_device(&igb_driver.driver, NULL, &event, | |
b980ac18 | 5648 | __igb_notify_dca); |
fe4506b6 JC |
5649 | |
5650 | return ret_val ? NOTIFY_BAD : NOTIFY_DONE; | |
5651 | } | |
421e02f0 | 5652 | #endif /* CONFIG_IGB_DCA */ |
9d5c8243 | 5653 | |
0224d663 GR |
5654 | #ifdef CONFIG_PCI_IOV |
5655 | static int igb_vf_configure(struct igb_adapter *adapter, int vf) | |
5656 | { | |
5657 | unsigned char mac_addr[ETH_ALEN]; | |
0224d663 | 5658 | |
5ac6f91d | 5659 | eth_zero_addr(mac_addr); |
0224d663 GR |
5660 | igb_set_vf_mac(adapter, vf, mac_addr); |
5661 | ||
70ea4783 LL |
5662 | /* By default spoof check is enabled for all VFs */ |
5663 | adapter->vf_data[vf].spoofchk_enabled = true; | |
5664 | ||
f557147c | 5665 | return 0; |
0224d663 GR |
5666 | } |
5667 | ||
0224d663 | 5668 | #endif |
4ae196df AD |
5669 | static void igb_ping_all_vfs(struct igb_adapter *adapter) |
5670 | { | |
5671 | struct e1000_hw *hw = &adapter->hw; | |
5672 | u32 ping; | |
5673 | int i; | |
5674 | ||
5675 | for (i = 0 ; i < adapter->vfs_allocated_count; i++) { | |
5676 | ping = E1000_PF_CONTROL_MSG; | |
f2ca0dbe | 5677 | if (adapter->vf_data[i].flags & IGB_VF_FLAG_CTS) |
4ae196df AD |
5678 | ping |= E1000_VT_MSGTYPE_CTS; |
5679 | igb_write_mbx(hw, &ping, 1, i); | |
5680 | } | |
5681 | } | |
5682 | ||
7d5753f0 AD |
5683 | static int igb_set_vf_promisc(struct igb_adapter *adapter, u32 *msgbuf, u32 vf) |
5684 | { | |
5685 | struct e1000_hw *hw = &adapter->hw; | |
5686 | u32 vmolr = rd32(E1000_VMOLR(vf)); | |
5687 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; | |
5688 | ||
d85b9004 | 5689 | vf_data->flags &= ~(IGB_VF_FLAG_UNI_PROMISC | |
b980ac18 | 5690 | IGB_VF_FLAG_MULTI_PROMISC); |
7d5753f0 AD |
5691 | vmolr &= ~(E1000_VMOLR_ROPE | E1000_VMOLR_ROMPE | E1000_VMOLR_MPME); |
5692 | ||
5693 | if (*msgbuf & E1000_VF_SET_PROMISC_MULTICAST) { | |
5694 | vmolr |= E1000_VMOLR_MPME; | |
d85b9004 | 5695 | vf_data->flags |= IGB_VF_FLAG_MULTI_PROMISC; |
7d5753f0 AD |
5696 | *msgbuf &= ~E1000_VF_SET_PROMISC_MULTICAST; |
5697 | } else { | |
b980ac18 | 5698 | /* if we have hashes and we are clearing a multicast promisc |
7d5753f0 AD |
5699 | * flag we need to write the hashes to the MTA as this step |
5700 | * was previously skipped | |
5701 | */ | |
5702 | if (vf_data->num_vf_mc_hashes > 30) { | |
5703 | vmolr |= E1000_VMOLR_MPME; | |
5704 | } else if (vf_data->num_vf_mc_hashes) { | |
5705 | int j; | |
9005df38 | 5706 | |
7d5753f0 AD |
5707 | vmolr |= E1000_VMOLR_ROMPE; |
5708 | for (j = 0; j < vf_data->num_vf_mc_hashes; j++) | |
5709 | igb_mta_set(hw, vf_data->vf_mc_hashes[j]); | |
5710 | } | |
5711 | } | |
5712 | ||
5713 | wr32(E1000_VMOLR(vf), vmolr); | |
5714 | ||
5715 | /* there are flags left unprocessed, likely not supported */ | |
5716 | if (*msgbuf & E1000_VT_MSGINFO_MASK) | |
5717 | return -EINVAL; | |
5718 | ||
5719 | return 0; | |
7d5753f0 AD |
5720 | } |
5721 | ||
4ae196df AD |
5722 | static int igb_set_vf_multicasts(struct igb_adapter *adapter, |
5723 | u32 *msgbuf, u32 vf) | |
5724 | { | |
5725 | int n = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT; | |
5726 | u16 *hash_list = (u16 *)&msgbuf[1]; | |
5727 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; | |
5728 | int i; | |
5729 | ||
7d5753f0 | 5730 | /* salt away the number of multicast addresses assigned |
4ae196df AD |
5731 | * to this VF for later use to restore when the PF multi cast |
5732 | * list changes | |
5733 | */ | |
5734 | vf_data->num_vf_mc_hashes = n; | |
5735 | ||
7d5753f0 AD |
5736 | /* only up to 30 hash values supported */ |
5737 | if (n > 30) | |
5738 | n = 30; | |
5739 | ||
5740 | /* store the hashes for later use */ | |
4ae196df | 5741 | for (i = 0; i < n; i++) |
a419aef8 | 5742 | vf_data->vf_mc_hashes[i] = hash_list[i]; |
4ae196df AD |
5743 | |
5744 | /* Flush and reset the mta with the new values */ | |
ff41f8dc | 5745 | igb_set_rx_mode(adapter->netdev); |
4ae196df AD |
5746 | |
5747 | return 0; | |
5748 | } | |
5749 | ||
5750 | static void igb_restore_vf_multicasts(struct igb_adapter *adapter) | |
5751 | { | |
5752 | struct e1000_hw *hw = &adapter->hw; | |
5753 | struct vf_data_storage *vf_data; | |
5754 | int i, j; | |
5755 | ||
5756 | for (i = 0; i < adapter->vfs_allocated_count; i++) { | |
7d5753f0 | 5757 | u32 vmolr = rd32(E1000_VMOLR(i)); |
9005df38 | 5758 | |
7d5753f0 AD |
5759 | vmolr &= ~(E1000_VMOLR_ROMPE | E1000_VMOLR_MPME); |
5760 | ||
4ae196df | 5761 | vf_data = &adapter->vf_data[i]; |
7d5753f0 AD |
5762 | |
5763 | if ((vf_data->num_vf_mc_hashes > 30) || | |
5764 | (vf_data->flags & IGB_VF_FLAG_MULTI_PROMISC)) { | |
5765 | vmolr |= E1000_VMOLR_MPME; | |
5766 | } else if (vf_data->num_vf_mc_hashes) { | |
5767 | vmolr |= E1000_VMOLR_ROMPE; | |
5768 | for (j = 0; j < vf_data->num_vf_mc_hashes; j++) | |
5769 | igb_mta_set(hw, vf_data->vf_mc_hashes[j]); | |
5770 | } | |
5771 | wr32(E1000_VMOLR(i), vmolr); | |
4ae196df AD |
5772 | } |
5773 | } | |
5774 | ||
5775 | static void igb_clear_vf_vfta(struct igb_adapter *adapter, u32 vf) | |
5776 | { | |
5777 | struct e1000_hw *hw = &adapter->hw; | |
5778 | u32 pool_mask, reg, vid; | |
5779 | int i; | |
5780 | ||
5781 | pool_mask = 1 << (E1000_VLVF_POOLSEL_SHIFT + vf); | |
5782 | ||
5783 | /* Find the vlan filter for this id */ | |
5784 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { | |
5785 | reg = rd32(E1000_VLVF(i)); | |
5786 | ||
5787 | /* remove the vf from the pool */ | |
5788 | reg &= ~pool_mask; | |
5789 | ||
5790 | /* if pool is empty then remove entry from vfta */ | |
5791 | if (!(reg & E1000_VLVF_POOLSEL_MASK) && | |
5792 | (reg & E1000_VLVF_VLANID_ENABLE)) { | |
5793 | reg = 0; | |
5794 | vid = reg & E1000_VLVF_VLANID_MASK; | |
5795 | igb_vfta_set(hw, vid, false); | |
5796 | } | |
5797 | ||
5798 | wr32(E1000_VLVF(i), reg); | |
5799 | } | |
ae641bdc AD |
5800 | |
5801 | adapter->vf_data[vf].vlans_enabled = 0; | |
4ae196df AD |
5802 | } |
5803 | ||
5804 | static s32 igb_vlvf_set(struct igb_adapter *adapter, u32 vid, bool add, u32 vf) | |
5805 | { | |
5806 | struct e1000_hw *hw = &adapter->hw; | |
5807 | u32 reg, i; | |
5808 | ||
51466239 AD |
5809 | /* The vlvf table only exists on 82576 hardware and newer */ |
5810 | if (hw->mac.type < e1000_82576) | |
5811 | return -1; | |
5812 | ||
5813 | /* we only need to do this if VMDq is enabled */ | |
4ae196df AD |
5814 | if (!adapter->vfs_allocated_count) |
5815 | return -1; | |
5816 | ||
5817 | /* Find the vlan filter for this id */ | |
5818 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { | |
5819 | reg = rd32(E1000_VLVF(i)); | |
5820 | if ((reg & E1000_VLVF_VLANID_ENABLE) && | |
5821 | vid == (reg & E1000_VLVF_VLANID_MASK)) | |
5822 | break; | |
5823 | } | |
5824 | ||
5825 | if (add) { | |
5826 | if (i == E1000_VLVF_ARRAY_SIZE) { | |
5827 | /* Did not find a matching VLAN ID entry that was | |
5828 | * enabled. Search for a free filter entry, i.e. | |
5829 | * one without the enable bit set | |
5830 | */ | |
5831 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { | |
5832 | reg = rd32(E1000_VLVF(i)); | |
5833 | if (!(reg & E1000_VLVF_VLANID_ENABLE)) | |
5834 | break; | |
5835 | } | |
5836 | } | |
5837 | if (i < E1000_VLVF_ARRAY_SIZE) { | |
5838 | /* Found an enabled/available entry */ | |
5839 | reg |= 1 << (E1000_VLVF_POOLSEL_SHIFT + vf); | |
5840 | ||
5841 | /* if !enabled we need to set this up in vfta */ | |
5842 | if (!(reg & E1000_VLVF_VLANID_ENABLE)) { | |
51466239 AD |
5843 | /* add VID to filter table */ |
5844 | igb_vfta_set(hw, vid, true); | |
4ae196df AD |
5845 | reg |= E1000_VLVF_VLANID_ENABLE; |
5846 | } | |
cad6d05f AD |
5847 | reg &= ~E1000_VLVF_VLANID_MASK; |
5848 | reg |= vid; | |
4ae196df | 5849 | wr32(E1000_VLVF(i), reg); |
ae641bdc AD |
5850 | |
5851 | /* do not modify RLPML for PF devices */ | |
5852 | if (vf >= adapter->vfs_allocated_count) | |
5853 | return 0; | |
5854 | ||
5855 | if (!adapter->vf_data[vf].vlans_enabled) { | |
5856 | u32 size; | |
9005df38 | 5857 | |
ae641bdc AD |
5858 | reg = rd32(E1000_VMOLR(vf)); |
5859 | size = reg & E1000_VMOLR_RLPML_MASK; | |
5860 | size += 4; | |
5861 | reg &= ~E1000_VMOLR_RLPML_MASK; | |
5862 | reg |= size; | |
5863 | wr32(E1000_VMOLR(vf), reg); | |
5864 | } | |
ae641bdc | 5865 | |
51466239 | 5866 | adapter->vf_data[vf].vlans_enabled++; |
4ae196df AD |
5867 | } |
5868 | } else { | |
5869 | if (i < E1000_VLVF_ARRAY_SIZE) { | |
5870 | /* remove vf from the pool */ | |
5871 | reg &= ~(1 << (E1000_VLVF_POOLSEL_SHIFT + vf)); | |
5872 | /* if pool is empty then remove entry from vfta */ | |
5873 | if (!(reg & E1000_VLVF_POOLSEL_MASK)) { | |
5874 | reg = 0; | |
5875 | igb_vfta_set(hw, vid, false); | |
5876 | } | |
5877 | wr32(E1000_VLVF(i), reg); | |
ae641bdc AD |
5878 | |
5879 | /* do not modify RLPML for PF devices */ | |
5880 | if (vf >= adapter->vfs_allocated_count) | |
5881 | return 0; | |
5882 | ||
5883 | adapter->vf_data[vf].vlans_enabled--; | |
5884 | if (!adapter->vf_data[vf].vlans_enabled) { | |
5885 | u32 size; | |
9005df38 | 5886 | |
ae641bdc AD |
5887 | reg = rd32(E1000_VMOLR(vf)); |
5888 | size = reg & E1000_VMOLR_RLPML_MASK; | |
5889 | size -= 4; | |
5890 | reg &= ~E1000_VMOLR_RLPML_MASK; | |
5891 | reg |= size; | |
5892 | wr32(E1000_VMOLR(vf), reg); | |
5893 | } | |
4ae196df AD |
5894 | } |
5895 | } | |
8151d294 WM |
5896 | return 0; |
5897 | } | |
5898 | ||
5899 | static void igb_set_vmvir(struct igb_adapter *adapter, u32 vid, u32 vf) | |
5900 | { | |
5901 | struct e1000_hw *hw = &adapter->hw; | |
5902 | ||
5903 | if (vid) | |
5904 | wr32(E1000_VMVIR(vf), (vid | E1000_VMVIR_VLANA_DEFAULT)); | |
5905 | else | |
5906 | wr32(E1000_VMVIR(vf), 0); | |
5907 | } | |
5908 | ||
5909 | static int igb_ndo_set_vf_vlan(struct net_device *netdev, | |
5910 | int vf, u16 vlan, u8 qos) | |
5911 | { | |
5912 | int err = 0; | |
5913 | struct igb_adapter *adapter = netdev_priv(netdev); | |
5914 | ||
5915 | if ((vf >= adapter->vfs_allocated_count) || (vlan > 4095) || (qos > 7)) | |
5916 | return -EINVAL; | |
5917 | if (vlan || qos) { | |
5918 | err = igb_vlvf_set(adapter, vlan, !!vlan, vf); | |
5919 | if (err) | |
5920 | goto out; | |
5921 | igb_set_vmvir(adapter, vlan | (qos << VLAN_PRIO_SHIFT), vf); | |
5922 | igb_set_vmolr(adapter, vf, !vlan); | |
5923 | adapter->vf_data[vf].pf_vlan = vlan; | |
5924 | adapter->vf_data[vf].pf_qos = qos; | |
5925 | dev_info(&adapter->pdev->dev, | |
5926 | "Setting VLAN %d, QOS 0x%x on VF %d\n", vlan, qos, vf); | |
5927 | if (test_bit(__IGB_DOWN, &adapter->state)) { | |
5928 | dev_warn(&adapter->pdev->dev, | |
b980ac18 | 5929 | "The VF VLAN has been set, but the PF device is not up.\n"); |
8151d294 | 5930 | dev_warn(&adapter->pdev->dev, |
b980ac18 | 5931 | "Bring the PF device up before attempting to use the VF device.\n"); |
8151d294 WM |
5932 | } |
5933 | } else { | |
5934 | igb_vlvf_set(adapter, adapter->vf_data[vf].pf_vlan, | |
b980ac18 | 5935 | false, vf); |
8151d294 WM |
5936 | igb_set_vmvir(adapter, vlan, vf); |
5937 | igb_set_vmolr(adapter, vf, true); | |
5938 | adapter->vf_data[vf].pf_vlan = 0; | |
5939 | adapter->vf_data[vf].pf_qos = 0; | |
b980ac18 | 5940 | } |
8151d294 | 5941 | out: |
b980ac18 | 5942 | return err; |
4ae196df AD |
5943 | } |
5944 | ||
6f3dc319 GR |
5945 | static int igb_find_vlvf_entry(struct igb_adapter *adapter, int vid) |
5946 | { | |
5947 | struct e1000_hw *hw = &adapter->hw; | |
5948 | int i; | |
5949 | u32 reg; | |
5950 | ||
5951 | /* Find the vlan filter for this id */ | |
5952 | for (i = 0; i < E1000_VLVF_ARRAY_SIZE; i++) { | |
5953 | reg = rd32(E1000_VLVF(i)); | |
5954 | if ((reg & E1000_VLVF_VLANID_ENABLE) && | |
5955 | vid == (reg & E1000_VLVF_VLANID_MASK)) | |
5956 | break; | |
5957 | } | |
5958 | ||
5959 | if (i >= E1000_VLVF_ARRAY_SIZE) | |
5960 | i = -1; | |
5961 | ||
5962 | return i; | |
5963 | } | |
5964 | ||
4ae196df AD |
5965 | static int igb_set_vf_vlan(struct igb_adapter *adapter, u32 *msgbuf, u32 vf) |
5966 | { | |
6f3dc319 | 5967 | struct e1000_hw *hw = &adapter->hw; |
4ae196df AD |
5968 | int add = (msgbuf[0] & E1000_VT_MSGINFO_MASK) >> E1000_VT_MSGINFO_SHIFT; |
5969 | int vid = (msgbuf[1] & E1000_VLVF_VLANID_MASK); | |
6f3dc319 | 5970 | int err = 0; |
4ae196df | 5971 | |
6f3dc319 GR |
5972 | /* If in promiscuous mode we need to make sure the PF also has |
5973 | * the VLAN filter set. | |
5974 | */ | |
5975 | if (add && (adapter->netdev->flags & IFF_PROMISC)) | |
5976 | err = igb_vlvf_set(adapter, vid, add, | |
5977 | adapter->vfs_allocated_count); | |
5978 | if (err) | |
5979 | goto out; | |
5980 | ||
5981 | err = igb_vlvf_set(adapter, vid, add, vf); | |
5982 | ||
5983 | if (err) | |
5984 | goto out; | |
5985 | ||
5986 | /* Go through all the checks to see if the VLAN filter should | |
5987 | * be wiped completely. | |
5988 | */ | |
5989 | if (!add && (adapter->netdev->flags & IFF_PROMISC)) { | |
5990 | u32 vlvf, bits; | |
6f3dc319 | 5991 | int regndx = igb_find_vlvf_entry(adapter, vid); |
9005df38 | 5992 | |
6f3dc319 GR |
5993 | if (regndx < 0) |
5994 | goto out; | |
5995 | /* See if any other pools are set for this VLAN filter | |
5996 | * entry other than the PF. | |
5997 | */ | |
5998 | vlvf = bits = rd32(E1000_VLVF(regndx)); | |
5999 | bits &= 1 << (E1000_VLVF_POOLSEL_SHIFT + | |
6000 | adapter->vfs_allocated_count); | |
6001 | /* If the filter was removed then ensure PF pool bit | |
6002 | * is cleared if the PF only added itself to the pool | |
6003 | * because the PF is in promiscuous mode. | |
6004 | */ | |
6005 | if ((vlvf & VLAN_VID_MASK) == vid && | |
6006 | !test_bit(vid, adapter->active_vlans) && | |
6007 | !bits) | |
6008 | igb_vlvf_set(adapter, vid, add, | |
6009 | adapter->vfs_allocated_count); | |
6010 | } | |
6011 | ||
6012 | out: | |
6013 | return err; | |
4ae196df AD |
6014 | } |
6015 | ||
f2ca0dbe | 6016 | static inline void igb_vf_reset(struct igb_adapter *adapter, u32 vf) |
4ae196df | 6017 | { |
8fa7e0f7 GR |
6018 | /* clear flags - except flag that indicates PF has set the MAC */ |
6019 | adapter->vf_data[vf].flags &= IGB_VF_FLAG_PF_SET_MAC; | |
f2ca0dbe | 6020 | adapter->vf_data[vf].last_nack = jiffies; |
4ae196df AD |
6021 | |
6022 | /* reset offloads to defaults */ | |
8151d294 | 6023 | igb_set_vmolr(adapter, vf, true); |
4ae196df AD |
6024 | |
6025 | /* reset vlans for device */ | |
6026 | igb_clear_vf_vfta(adapter, vf); | |
8151d294 WM |
6027 | if (adapter->vf_data[vf].pf_vlan) |
6028 | igb_ndo_set_vf_vlan(adapter->netdev, vf, | |
6029 | adapter->vf_data[vf].pf_vlan, | |
6030 | adapter->vf_data[vf].pf_qos); | |
6031 | else | |
6032 | igb_clear_vf_vfta(adapter, vf); | |
4ae196df AD |
6033 | |
6034 | /* reset multicast table array for vf */ | |
6035 | adapter->vf_data[vf].num_vf_mc_hashes = 0; | |
6036 | ||
6037 | /* Flush and reset the mta with the new values */ | |
ff41f8dc | 6038 | igb_set_rx_mode(adapter->netdev); |
4ae196df AD |
6039 | } |
6040 | ||
f2ca0dbe AD |
6041 | static void igb_vf_reset_event(struct igb_adapter *adapter, u32 vf) |
6042 | { | |
6043 | unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses; | |
6044 | ||
5ac6f91d | 6045 | /* clear mac address as we were hotplug removed/added */ |
8151d294 | 6046 | if (!(adapter->vf_data[vf].flags & IGB_VF_FLAG_PF_SET_MAC)) |
5ac6f91d | 6047 | eth_zero_addr(vf_mac); |
f2ca0dbe AD |
6048 | |
6049 | /* process remaining reset events */ | |
6050 | igb_vf_reset(adapter, vf); | |
6051 | } | |
6052 | ||
6053 | static void igb_vf_reset_msg(struct igb_adapter *adapter, u32 vf) | |
4ae196df AD |
6054 | { |
6055 | struct e1000_hw *hw = &adapter->hw; | |
6056 | unsigned char *vf_mac = adapter->vf_data[vf].vf_mac_addresses; | |
ff41f8dc | 6057 | int rar_entry = hw->mac.rar_entry_count - (vf + 1); |
4ae196df AD |
6058 | u32 reg, msgbuf[3]; |
6059 | u8 *addr = (u8 *)(&msgbuf[1]); | |
6060 | ||
6061 | /* process all the same items cleared in a function level reset */ | |
f2ca0dbe | 6062 | igb_vf_reset(adapter, vf); |
4ae196df AD |
6063 | |
6064 | /* set vf mac address */ | |
26ad9178 | 6065 | igb_rar_set_qsel(adapter, vf_mac, rar_entry, vf); |
4ae196df AD |
6066 | |
6067 | /* enable transmit and receive for vf */ | |
6068 | reg = rd32(E1000_VFTE); | |
6069 | wr32(E1000_VFTE, reg | (1 << vf)); | |
6070 | reg = rd32(E1000_VFRE); | |
6071 | wr32(E1000_VFRE, reg | (1 << vf)); | |
6072 | ||
8fa7e0f7 | 6073 | adapter->vf_data[vf].flags |= IGB_VF_FLAG_CTS; |
4ae196df AD |
6074 | |
6075 | /* reply to reset with ack and vf mac address */ | |
6ddbc4cf AG |
6076 | if (!is_zero_ether_addr(vf_mac)) { |
6077 | msgbuf[0] = E1000_VF_RESET | E1000_VT_MSGTYPE_ACK; | |
6078 | memcpy(addr, vf_mac, ETH_ALEN); | |
6079 | } else { | |
6080 | msgbuf[0] = E1000_VF_RESET | E1000_VT_MSGTYPE_NACK; | |
6081 | } | |
4ae196df AD |
6082 | igb_write_mbx(hw, msgbuf, 3, vf); |
6083 | } | |
6084 | ||
6085 | static int igb_set_vf_mac_addr(struct igb_adapter *adapter, u32 *msg, int vf) | |
6086 | { | |
b980ac18 | 6087 | /* The VF MAC Address is stored in a packed array of bytes |
de42edde GR |
6088 | * starting at the second 32 bit word of the msg array |
6089 | */ | |
f2ca0dbe AD |
6090 | unsigned char *addr = (char *)&msg[1]; |
6091 | int err = -1; | |
4ae196df | 6092 | |
f2ca0dbe AD |
6093 | if (is_valid_ether_addr(addr)) |
6094 | err = igb_set_vf_mac(adapter, vf, addr); | |
4ae196df | 6095 | |
f2ca0dbe | 6096 | return err; |
4ae196df AD |
6097 | } |
6098 | ||
6099 | static void igb_rcv_ack_from_vf(struct igb_adapter *adapter, u32 vf) | |
6100 | { | |
6101 | struct e1000_hw *hw = &adapter->hw; | |
f2ca0dbe | 6102 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; |
4ae196df AD |
6103 | u32 msg = E1000_VT_MSGTYPE_NACK; |
6104 | ||
6105 | /* if device isn't clear to send it shouldn't be reading either */ | |
f2ca0dbe AD |
6106 | if (!(vf_data->flags & IGB_VF_FLAG_CTS) && |
6107 | time_after(jiffies, vf_data->last_nack + (2 * HZ))) { | |
4ae196df | 6108 | igb_write_mbx(hw, &msg, 1, vf); |
f2ca0dbe | 6109 | vf_data->last_nack = jiffies; |
4ae196df AD |
6110 | } |
6111 | } | |
6112 | ||
f2ca0dbe | 6113 | static void igb_rcv_msg_from_vf(struct igb_adapter *adapter, u32 vf) |
4ae196df | 6114 | { |
f2ca0dbe AD |
6115 | struct pci_dev *pdev = adapter->pdev; |
6116 | u32 msgbuf[E1000_VFMAILBOX_SIZE]; | |
4ae196df | 6117 | struct e1000_hw *hw = &adapter->hw; |
f2ca0dbe | 6118 | struct vf_data_storage *vf_data = &adapter->vf_data[vf]; |
4ae196df AD |
6119 | s32 retval; |
6120 | ||
f2ca0dbe | 6121 | retval = igb_read_mbx(hw, msgbuf, E1000_VFMAILBOX_SIZE, vf); |
4ae196df | 6122 | |
fef45f4c AD |
6123 | if (retval) { |
6124 | /* if receive failed revoke VF CTS stats and restart init */ | |
f2ca0dbe | 6125 | dev_err(&pdev->dev, "Error receiving message from VF\n"); |
fef45f4c AD |
6126 | vf_data->flags &= ~IGB_VF_FLAG_CTS; |
6127 | if (!time_after(jiffies, vf_data->last_nack + (2 * HZ))) | |
6128 | return; | |
6129 | goto out; | |
6130 | } | |
4ae196df AD |
6131 | |
6132 | /* this is a message we already processed, do nothing */ | |
6133 | if (msgbuf[0] & (E1000_VT_MSGTYPE_ACK | E1000_VT_MSGTYPE_NACK)) | |
f2ca0dbe | 6134 | return; |
4ae196df | 6135 | |
b980ac18 | 6136 | /* until the vf completes a reset it should not be |
4ae196df AD |
6137 | * allowed to start any configuration. |
6138 | */ | |
4ae196df AD |
6139 | if (msgbuf[0] == E1000_VF_RESET) { |
6140 | igb_vf_reset_msg(adapter, vf); | |
f2ca0dbe | 6141 | return; |
4ae196df AD |
6142 | } |
6143 | ||
f2ca0dbe | 6144 | if (!(vf_data->flags & IGB_VF_FLAG_CTS)) { |
fef45f4c AD |
6145 | if (!time_after(jiffies, vf_data->last_nack + (2 * HZ))) |
6146 | return; | |
6147 | retval = -1; | |
6148 | goto out; | |
4ae196df AD |
6149 | } |
6150 | ||
6151 | switch ((msgbuf[0] & 0xFFFF)) { | |
6152 | case E1000_VF_SET_MAC_ADDR: | |
a6b5ea35 GR |
6153 | retval = -EINVAL; |
6154 | if (!(vf_data->flags & IGB_VF_FLAG_PF_SET_MAC)) | |
6155 | retval = igb_set_vf_mac_addr(adapter, msgbuf, vf); | |
6156 | else | |
6157 | dev_warn(&pdev->dev, | |
b980ac18 JK |
6158 | "VF %d attempted to override administratively set MAC address\nReload the VF driver to resume operations\n", |
6159 | vf); | |
4ae196df | 6160 | break; |
7d5753f0 AD |
6161 | case E1000_VF_SET_PROMISC: |
6162 | retval = igb_set_vf_promisc(adapter, msgbuf, vf); | |
6163 | break; | |
4ae196df AD |
6164 | case E1000_VF_SET_MULTICAST: |
6165 | retval = igb_set_vf_multicasts(adapter, msgbuf, vf); | |
6166 | break; | |
6167 | case E1000_VF_SET_LPE: | |
6168 | retval = igb_set_vf_rlpml(adapter, msgbuf[1], vf); | |
6169 | break; | |
6170 | case E1000_VF_SET_VLAN: | |
a6b5ea35 GR |
6171 | retval = -1; |
6172 | if (vf_data->pf_vlan) | |
6173 | dev_warn(&pdev->dev, | |
b980ac18 JK |
6174 | "VF %d attempted to override administratively set VLAN tag\nReload the VF driver to resume operations\n", |
6175 | vf); | |
8151d294 WM |
6176 | else |
6177 | retval = igb_set_vf_vlan(adapter, msgbuf, vf); | |
4ae196df AD |
6178 | break; |
6179 | default: | |
090b1795 | 6180 | dev_err(&pdev->dev, "Unhandled Msg %08x\n", msgbuf[0]); |
4ae196df AD |
6181 | retval = -1; |
6182 | break; | |
6183 | } | |
6184 | ||
fef45f4c AD |
6185 | msgbuf[0] |= E1000_VT_MSGTYPE_CTS; |
6186 | out: | |
4ae196df AD |
6187 | /* notify the VF of the results of what it sent us */ |
6188 | if (retval) | |
6189 | msgbuf[0] |= E1000_VT_MSGTYPE_NACK; | |
6190 | else | |
6191 | msgbuf[0] |= E1000_VT_MSGTYPE_ACK; | |
6192 | ||
4ae196df | 6193 | igb_write_mbx(hw, msgbuf, 1, vf); |
f2ca0dbe | 6194 | } |
4ae196df | 6195 | |
f2ca0dbe AD |
6196 | static void igb_msg_task(struct igb_adapter *adapter) |
6197 | { | |
6198 | struct e1000_hw *hw = &adapter->hw; | |
6199 | u32 vf; | |
6200 | ||
6201 | for (vf = 0; vf < adapter->vfs_allocated_count; vf++) { | |
6202 | /* process any reset requests */ | |
6203 | if (!igb_check_for_rst(hw, vf)) | |
6204 | igb_vf_reset_event(adapter, vf); | |
6205 | ||
6206 | /* process any messages pending */ | |
6207 | if (!igb_check_for_msg(hw, vf)) | |
6208 | igb_rcv_msg_from_vf(adapter, vf); | |
6209 | ||
6210 | /* process any acks */ | |
6211 | if (!igb_check_for_ack(hw, vf)) | |
6212 | igb_rcv_ack_from_vf(adapter, vf); | |
6213 | } | |
4ae196df AD |
6214 | } |
6215 | ||
68d480c4 AD |
6216 | /** |
6217 | * igb_set_uta - Set unicast filter table address | |
6218 | * @adapter: board private structure | |
6219 | * | |
6220 | * The unicast table address is a register array of 32-bit registers. | |
6221 | * The table is meant to be used in a way similar to how the MTA is used | |
6222 | * however due to certain limitations in the hardware it is necessary to | |
25985edc LDM |
6223 | * set all the hash bits to 1 and use the VMOLR ROPE bit as a promiscuous |
6224 | * enable bit to allow vlan tag stripping when promiscuous mode is enabled | |
68d480c4 AD |
6225 | **/ |
6226 | static void igb_set_uta(struct igb_adapter *adapter) | |
6227 | { | |
6228 | struct e1000_hw *hw = &adapter->hw; | |
6229 | int i; | |
6230 | ||
6231 | /* The UTA table only exists on 82576 hardware and newer */ | |
6232 | if (hw->mac.type < e1000_82576) | |
6233 | return; | |
6234 | ||
6235 | /* we only need to do this if VMDq is enabled */ | |
6236 | if (!adapter->vfs_allocated_count) | |
6237 | return; | |
6238 | ||
6239 | for (i = 0; i < hw->mac.uta_reg_count; i++) | |
6240 | array_wr32(E1000_UTA, i, ~0); | |
6241 | } | |
6242 | ||
9d5c8243 | 6243 | /** |
b980ac18 JK |
6244 | * igb_intr_msi - Interrupt Handler |
6245 | * @irq: interrupt number | |
6246 | * @data: pointer to a network interface device structure | |
9d5c8243 AK |
6247 | **/ |
6248 | static irqreturn_t igb_intr_msi(int irq, void *data) | |
6249 | { | |
047e0030 AD |
6250 | struct igb_adapter *adapter = data; |
6251 | struct igb_q_vector *q_vector = adapter->q_vector[0]; | |
9d5c8243 AK |
6252 | struct e1000_hw *hw = &adapter->hw; |
6253 | /* read ICR disables interrupts using IAM */ | |
6254 | u32 icr = rd32(E1000_ICR); | |
6255 | ||
047e0030 | 6256 | igb_write_itr(q_vector); |
9d5c8243 | 6257 | |
7f081d40 AD |
6258 | if (icr & E1000_ICR_DRSTA) |
6259 | schedule_work(&adapter->reset_task); | |
6260 | ||
047e0030 | 6261 | if (icr & E1000_ICR_DOUTSYNC) { |
dda0e083 AD |
6262 | /* HW is reporting DMA is out of sync */ |
6263 | adapter->stats.doosync++; | |
6264 | } | |
6265 | ||
9d5c8243 AK |
6266 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
6267 | hw->mac.get_link_status = 1; | |
6268 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
6269 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
6270 | } | |
6271 | ||
61d7f75f RC |
6272 | if (icr & E1000_ICR_TS) |
6273 | igb_tsync_interrupt(adapter); | |
1f6e8178 | 6274 | |
047e0030 | 6275 | napi_schedule(&q_vector->napi); |
9d5c8243 AK |
6276 | |
6277 | return IRQ_HANDLED; | |
6278 | } | |
6279 | ||
6280 | /** | |
b980ac18 JK |
6281 | * igb_intr - Legacy Interrupt Handler |
6282 | * @irq: interrupt number | |
6283 | * @data: pointer to a network interface device structure | |
9d5c8243 AK |
6284 | **/ |
6285 | static irqreturn_t igb_intr(int irq, void *data) | |
6286 | { | |
047e0030 AD |
6287 | struct igb_adapter *adapter = data; |
6288 | struct igb_q_vector *q_vector = adapter->q_vector[0]; | |
9d5c8243 AK |
6289 | struct e1000_hw *hw = &adapter->hw; |
6290 | /* Interrupt Auto-Mask...upon reading ICR, interrupts are masked. No | |
b980ac18 JK |
6291 | * need for the IMC write |
6292 | */ | |
9d5c8243 | 6293 | u32 icr = rd32(E1000_ICR); |
9d5c8243 AK |
6294 | |
6295 | /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is | |
b980ac18 JK |
6296 | * not set, then the adapter didn't send an interrupt |
6297 | */ | |
9d5c8243 AK |
6298 | if (!(icr & E1000_ICR_INT_ASSERTED)) |
6299 | return IRQ_NONE; | |
6300 | ||
0ba82994 AD |
6301 | igb_write_itr(q_vector); |
6302 | ||
7f081d40 AD |
6303 | if (icr & E1000_ICR_DRSTA) |
6304 | schedule_work(&adapter->reset_task); | |
6305 | ||
047e0030 | 6306 | if (icr & E1000_ICR_DOUTSYNC) { |
dda0e083 AD |
6307 | /* HW is reporting DMA is out of sync */ |
6308 | adapter->stats.doosync++; | |
6309 | } | |
6310 | ||
9d5c8243 AK |
6311 | if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { |
6312 | hw->mac.get_link_status = 1; | |
6313 | /* guard against interrupt when we're going down */ | |
6314 | if (!test_bit(__IGB_DOWN, &adapter->state)) | |
6315 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
6316 | } | |
6317 | ||
61d7f75f RC |
6318 | if (icr & E1000_ICR_TS) |
6319 | igb_tsync_interrupt(adapter); | |
1f6e8178 | 6320 | |
047e0030 | 6321 | napi_schedule(&q_vector->napi); |
9d5c8243 AK |
6322 | |
6323 | return IRQ_HANDLED; | |
6324 | } | |
6325 | ||
c50b52a0 | 6326 | static void igb_ring_irq_enable(struct igb_q_vector *q_vector) |
9d5c8243 | 6327 | { |
047e0030 | 6328 | struct igb_adapter *adapter = q_vector->adapter; |
46544258 | 6329 | struct e1000_hw *hw = &adapter->hw; |
9d5c8243 | 6330 | |
0ba82994 AD |
6331 | if ((q_vector->rx.ring && (adapter->rx_itr_setting & 3)) || |
6332 | (!q_vector->rx.ring && (adapter->tx_itr_setting & 3))) { | |
6333 | if ((adapter->num_q_vectors == 1) && !adapter->vf_data) | |
6334 | igb_set_itr(q_vector); | |
46544258 | 6335 | else |
047e0030 | 6336 | igb_update_ring_itr(q_vector); |
9d5c8243 AK |
6337 | } |
6338 | ||
46544258 | 6339 | if (!test_bit(__IGB_DOWN, &adapter->state)) { |
cd14ef54 | 6340 | if (adapter->flags & IGB_FLAG_HAS_MSIX) |
047e0030 | 6341 | wr32(E1000_EIMS, q_vector->eims_value); |
46544258 AD |
6342 | else |
6343 | igb_irq_enable(adapter); | |
6344 | } | |
9d5c8243 AK |
6345 | } |
6346 | ||
46544258 | 6347 | /** |
b980ac18 JK |
6348 | * igb_poll - NAPI Rx polling callback |
6349 | * @napi: napi polling structure | |
6350 | * @budget: count of how many packets we should handle | |
46544258 AD |
6351 | **/ |
6352 | static int igb_poll(struct napi_struct *napi, int budget) | |
9d5c8243 | 6353 | { |
047e0030 | 6354 | struct igb_q_vector *q_vector = container_of(napi, |
b980ac18 JK |
6355 | struct igb_q_vector, |
6356 | napi); | |
16eb8815 | 6357 | bool clean_complete = true; |
9d5c8243 | 6358 | |
421e02f0 | 6359 | #ifdef CONFIG_IGB_DCA |
047e0030 AD |
6360 | if (q_vector->adapter->flags & IGB_FLAG_DCA_ENABLED) |
6361 | igb_update_dca(q_vector); | |
fe4506b6 | 6362 | #endif |
0ba82994 | 6363 | if (q_vector->tx.ring) |
13fde97a | 6364 | clean_complete = igb_clean_tx_irq(q_vector); |
9d5c8243 | 6365 | |
0ba82994 | 6366 | if (q_vector->rx.ring) |
cd392f5c | 6367 | clean_complete &= igb_clean_rx_irq(q_vector, budget); |
047e0030 | 6368 | |
16eb8815 AD |
6369 | /* If all work not completed, return budget and keep polling */ |
6370 | if (!clean_complete) | |
6371 | return budget; | |
46544258 | 6372 | |
9d5c8243 | 6373 | /* If not enough Rx work done, exit the polling mode */ |
16eb8815 AD |
6374 | napi_complete(napi); |
6375 | igb_ring_irq_enable(q_vector); | |
9d5c8243 | 6376 | |
16eb8815 | 6377 | return 0; |
9d5c8243 | 6378 | } |
6d8126f9 | 6379 | |
9d5c8243 | 6380 | /** |
b980ac18 JK |
6381 | * igb_clean_tx_irq - Reclaim resources after transmit completes |
6382 | * @q_vector: pointer to q_vector containing needed info | |
49ce9c2c | 6383 | * |
b980ac18 | 6384 | * returns true if ring is completely cleaned |
9d5c8243 | 6385 | **/ |
047e0030 | 6386 | static bool igb_clean_tx_irq(struct igb_q_vector *q_vector) |
9d5c8243 | 6387 | { |
047e0030 | 6388 | struct igb_adapter *adapter = q_vector->adapter; |
0ba82994 | 6389 | struct igb_ring *tx_ring = q_vector->tx.ring; |
06034649 | 6390 | struct igb_tx_buffer *tx_buffer; |
f4128785 | 6391 | union e1000_adv_tx_desc *tx_desc; |
9d5c8243 | 6392 | unsigned int total_bytes = 0, total_packets = 0; |
0ba82994 | 6393 | unsigned int budget = q_vector->tx.work_limit; |
8542db05 | 6394 | unsigned int i = tx_ring->next_to_clean; |
9d5c8243 | 6395 | |
13fde97a AD |
6396 | if (test_bit(__IGB_DOWN, &adapter->state)) |
6397 | return true; | |
0e014cb1 | 6398 | |
06034649 | 6399 | tx_buffer = &tx_ring->tx_buffer_info[i]; |
13fde97a | 6400 | tx_desc = IGB_TX_DESC(tx_ring, i); |
8542db05 | 6401 | i -= tx_ring->count; |
9d5c8243 | 6402 | |
f4128785 AD |
6403 | do { |
6404 | union e1000_adv_tx_desc *eop_desc = tx_buffer->next_to_watch; | |
8542db05 AD |
6405 | |
6406 | /* if next_to_watch is not set then there is no work pending */ | |
6407 | if (!eop_desc) | |
6408 | break; | |
13fde97a | 6409 | |
f4128785 | 6410 | /* prevent any other reads prior to eop_desc */ |
70d289bc | 6411 | read_barrier_depends(); |
f4128785 | 6412 | |
13fde97a AD |
6413 | /* if DD is not set pending work has not been completed */ |
6414 | if (!(eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD))) | |
6415 | break; | |
6416 | ||
8542db05 AD |
6417 | /* clear next_to_watch to prevent false hangs */ |
6418 | tx_buffer->next_to_watch = NULL; | |
9d5c8243 | 6419 | |
ebe42d16 AD |
6420 | /* update the statistics for this packet */ |
6421 | total_bytes += tx_buffer->bytecount; | |
6422 | total_packets += tx_buffer->gso_segs; | |
13fde97a | 6423 | |
ebe42d16 | 6424 | /* free the skb */ |
a81fb049 | 6425 | dev_consume_skb_any(tx_buffer->skb); |
13fde97a | 6426 | |
ebe42d16 AD |
6427 | /* unmap skb header data */ |
6428 | dma_unmap_single(tx_ring->dev, | |
c9f14bf3 AD |
6429 | dma_unmap_addr(tx_buffer, dma), |
6430 | dma_unmap_len(tx_buffer, len), | |
ebe42d16 AD |
6431 | DMA_TO_DEVICE); |
6432 | ||
c9f14bf3 AD |
6433 | /* clear tx_buffer data */ |
6434 | tx_buffer->skb = NULL; | |
6435 | dma_unmap_len_set(tx_buffer, len, 0); | |
6436 | ||
ebe42d16 AD |
6437 | /* clear last DMA location and unmap remaining buffers */ |
6438 | while (tx_desc != eop_desc) { | |
13fde97a AD |
6439 | tx_buffer++; |
6440 | tx_desc++; | |
9d5c8243 | 6441 | i++; |
8542db05 AD |
6442 | if (unlikely(!i)) { |
6443 | i -= tx_ring->count; | |
06034649 | 6444 | tx_buffer = tx_ring->tx_buffer_info; |
13fde97a AD |
6445 | tx_desc = IGB_TX_DESC(tx_ring, 0); |
6446 | } | |
ebe42d16 AD |
6447 | |
6448 | /* unmap any remaining paged data */ | |
c9f14bf3 | 6449 | if (dma_unmap_len(tx_buffer, len)) { |
ebe42d16 | 6450 | dma_unmap_page(tx_ring->dev, |
c9f14bf3 AD |
6451 | dma_unmap_addr(tx_buffer, dma), |
6452 | dma_unmap_len(tx_buffer, len), | |
ebe42d16 | 6453 | DMA_TO_DEVICE); |
c9f14bf3 | 6454 | dma_unmap_len_set(tx_buffer, len, 0); |
ebe42d16 AD |
6455 | } |
6456 | } | |
6457 | ||
ebe42d16 AD |
6458 | /* move us one more past the eop_desc for start of next pkt */ |
6459 | tx_buffer++; | |
6460 | tx_desc++; | |
6461 | i++; | |
6462 | if (unlikely(!i)) { | |
6463 | i -= tx_ring->count; | |
6464 | tx_buffer = tx_ring->tx_buffer_info; | |
6465 | tx_desc = IGB_TX_DESC(tx_ring, 0); | |
6466 | } | |
f4128785 AD |
6467 | |
6468 | /* issue prefetch for next Tx descriptor */ | |
6469 | prefetch(tx_desc); | |
6470 | ||
6471 | /* update budget accounting */ | |
6472 | budget--; | |
6473 | } while (likely(budget)); | |
0e014cb1 | 6474 | |
bdbc0631 ED |
6475 | netdev_tx_completed_queue(txring_txq(tx_ring), |
6476 | total_packets, total_bytes); | |
8542db05 | 6477 | i += tx_ring->count; |
9d5c8243 | 6478 | tx_ring->next_to_clean = i; |
13fde97a AD |
6479 | u64_stats_update_begin(&tx_ring->tx_syncp); |
6480 | tx_ring->tx_stats.bytes += total_bytes; | |
6481 | tx_ring->tx_stats.packets += total_packets; | |
6482 | u64_stats_update_end(&tx_ring->tx_syncp); | |
0ba82994 AD |
6483 | q_vector->tx.total_bytes += total_bytes; |
6484 | q_vector->tx.total_packets += total_packets; | |
9d5c8243 | 6485 | |
6d095fa8 | 6486 | if (test_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags)) { |
13fde97a | 6487 | struct e1000_hw *hw = &adapter->hw; |
12dcd86b | 6488 | |
9d5c8243 | 6489 | /* Detect a transmit hang in hardware, this serializes the |
b980ac18 JK |
6490 | * check with the clearing of time_stamp and movement of i |
6491 | */ | |
6d095fa8 | 6492 | clear_bit(IGB_RING_FLAG_TX_DETECT_HANG, &tx_ring->flags); |
f4128785 | 6493 | if (tx_buffer->next_to_watch && |
8542db05 | 6494 | time_after(jiffies, tx_buffer->time_stamp + |
8e95a202 JP |
6495 | (adapter->tx_timeout_factor * HZ)) && |
6496 | !(rd32(E1000_STATUS) & E1000_STATUS_TXOFF)) { | |
9d5c8243 | 6497 | |
9d5c8243 | 6498 | /* detected Tx unit hang */ |
59d71989 | 6499 | dev_err(tx_ring->dev, |
9d5c8243 | 6500 | "Detected Tx Unit Hang\n" |
2d064c06 | 6501 | " Tx Queue <%d>\n" |
9d5c8243 AK |
6502 | " TDH <%x>\n" |
6503 | " TDT <%x>\n" | |
6504 | " next_to_use <%x>\n" | |
6505 | " next_to_clean <%x>\n" | |
9d5c8243 AK |
6506 | "buffer_info[next_to_clean]\n" |
6507 | " time_stamp <%lx>\n" | |
8542db05 | 6508 | " next_to_watch <%p>\n" |
9d5c8243 AK |
6509 | " jiffies <%lx>\n" |
6510 | " desc.status <%x>\n", | |
2d064c06 | 6511 | tx_ring->queue_index, |
238ac817 | 6512 | rd32(E1000_TDH(tx_ring->reg_idx)), |
fce99e34 | 6513 | readl(tx_ring->tail), |
9d5c8243 AK |
6514 | tx_ring->next_to_use, |
6515 | tx_ring->next_to_clean, | |
8542db05 | 6516 | tx_buffer->time_stamp, |
f4128785 | 6517 | tx_buffer->next_to_watch, |
9d5c8243 | 6518 | jiffies, |
f4128785 | 6519 | tx_buffer->next_to_watch->wb.status); |
13fde97a AD |
6520 | netif_stop_subqueue(tx_ring->netdev, |
6521 | tx_ring->queue_index); | |
6522 | ||
6523 | /* we are about to reset, no point in enabling stuff */ | |
6524 | return true; | |
9d5c8243 AK |
6525 | } |
6526 | } | |
13fde97a | 6527 | |
21ba6fe1 | 6528 | #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2) |
13fde97a | 6529 | if (unlikely(total_packets && |
b980ac18 JK |
6530 | netif_carrier_ok(tx_ring->netdev) && |
6531 | igb_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD)) { | |
13fde97a AD |
6532 | /* Make sure that anybody stopping the queue after this |
6533 | * sees the new next_to_clean. | |
6534 | */ | |
6535 | smp_mb(); | |
6536 | if (__netif_subqueue_stopped(tx_ring->netdev, | |
6537 | tx_ring->queue_index) && | |
6538 | !(test_bit(__IGB_DOWN, &adapter->state))) { | |
6539 | netif_wake_subqueue(tx_ring->netdev, | |
6540 | tx_ring->queue_index); | |
6541 | ||
6542 | u64_stats_update_begin(&tx_ring->tx_syncp); | |
6543 | tx_ring->tx_stats.restart_queue++; | |
6544 | u64_stats_update_end(&tx_ring->tx_syncp); | |
6545 | } | |
6546 | } | |
6547 | ||
6548 | return !!budget; | |
9d5c8243 AK |
6549 | } |
6550 | ||
cbc8e55f | 6551 | /** |
b980ac18 JK |
6552 | * igb_reuse_rx_page - page flip buffer and store it back on the ring |
6553 | * @rx_ring: rx descriptor ring to store buffers on | |
6554 | * @old_buff: donor buffer to have page reused | |
cbc8e55f | 6555 | * |
b980ac18 | 6556 | * Synchronizes page for reuse by the adapter |
cbc8e55f AD |
6557 | **/ |
6558 | static void igb_reuse_rx_page(struct igb_ring *rx_ring, | |
6559 | struct igb_rx_buffer *old_buff) | |
6560 | { | |
6561 | struct igb_rx_buffer *new_buff; | |
6562 | u16 nta = rx_ring->next_to_alloc; | |
6563 | ||
6564 | new_buff = &rx_ring->rx_buffer_info[nta]; | |
6565 | ||
6566 | /* update, and store next to alloc */ | |
6567 | nta++; | |
6568 | rx_ring->next_to_alloc = (nta < rx_ring->count) ? nta : 0; | |
6569 | ||
6570 | /* transfer page from old buffer to new buffer */ | |
a1f63473 | 6571 | *new_buff = *old_buff; |
cbc8e55f AD |
6572 | |
6573 | /* sync the buffer for use by the device */ | |
6574 | dma_sync_single_range_for_device(rx_ring->dev, old_buff->dma, | |
6575 | old_buff->page_offset, | |
de78d1f9 | 6576 | IGB_RX_BUFSZ, |
cbc8e55f AD |
6577 | DMA_FROM_DEVICE); |
6578 | } | |
6579 | ||
95dd44b4 AD |
6580 | static inline bool igb_page_is_reserved(struct page *page) |
6581 | { | |
6582 | return (page_to_nid(page) != numa_mem_id()) || page->pfmemalloc; | |
6583 | } | |
6584 | ||
74e238ea AD |
6585 | static bool igb_can_reuse_rx_page(struct igb_rx_buffer *rx_buffer, |
6586 | struct page *page, | |
6587 | unsigned int truesize) | |
6588 | { | |
6589 | /* avoid re-using remote pages */ | |
95dd44b4 | 6590 | if (unlikely(igb_page_is_reserved(page))) |
bc16e47f RG |
6591 | return false; |
6592 | ||
74e238ea AD |
6593 | #if (PAGE_SIZE < 8192) |
6594 | /* if we are only owner of page we can reuse it */ | |
6595 | if (unlikely(page_count(page) != 1)) | |
6596 | return false; | |
6597 | ||
6598 | /* flip page offset to other buffer */ | |
6599 | rx_buffer->page_offset ^= IGB_RX_BUFSZ; | |
74e238ea AD |
6600 | #else |
6601 | /* move offset up to the next cache line */ | |
6602 | rx_buffer->page_offset += truesize; | |
6603 | ||
6604 | if (rx_buffer->page_offset > (PAGE_SIZE - IGB_RX_BUFSZ)) | |
6605 | return false; | |
74e238ea AD |
6606 | #endif |
6607 | ||
95dd44b4 AD |
6608 | /* Even if we own the page, we are not allowed to use atomic_set() |
6609 | * This would break get_page_unless_zero() users. | |
6610 | */ | |
6611 | atomic_inc(&page->_count); | |
6612 | ||
74e238ea AD |
6613 | return true; |
6614 | } | |
6615 | ||
cbc8e55f | 6616 | /** |
b980ac18 JK |
6617 | * igb_add_rx_frag - Add contents of Rx buffer to sk_buff |
6618 | * @rx_ring: rx descriptor ring to transact packets on | |
6619 | * @rx_buffer: buffer containing page to add | |
6620 | * @rx_desc: descriptor containing length of buffer written by hardware | |
6621 | * @skb: sk_buff to place the data into | |
cbc8e55f | 6622 | * |
b980ac18 JK |
6623 | * This function will add the data contained in rx_buffer->page to the skb. |
6624 | * This is done either through a direct copy if the data in the buffer is | |
6625 | * less than the skb header size, otherwise it will just attach the page as | |
6626 | * a frag to the skb. | |
cbc8e55f | 6627 | * |
b980ac18 JK |
6628 | * The function will then update the page offset if necessary and return |
6629 | * true if the buffer can be reused by the adapter. | |
cbc8e55f AD |
6630 | **/ |
6631 | static bool igb_add_rx_frag(struct igb_ring *rx_ring, | |
6632 | struct igb_rx_buffer *rx_buffer, | |
6633 | union e1000_adv_rx_desc *rx_desc, | |
6634 | struct sk_buff *skb) | |
6635 | { | |
6636 | struct page *page = rx_buffer->page; | |
f56e7bba | 6637 | unsigned char *va = page_address(page) + rx_buffer->page_offset; |
cbc8e55f | 6638 | unsigned int size = le16_to_cpu(rx_desc->wb.upper.length); |
74e238ea AD |
6639 | #if (PAGE_SIZE < 8192) |
6640 | unsigned int truesize = IGB_RX_BUFSZ; | |
6641 | #else | |
f56e7bba | 6642 | unsigned int truesize = SKB_DATA_ALIGN(size); |
74e238ea | 6643 | #endif |
f56e7bba | 6644 | unsigned int pull_len; |
cbc8e55f | 6645 | |
f56e7bba AD |
6646 | if (unlikely(skb_is_nonlinear(skb))) |
6647 | goto add_tail_frag; | |
cbc8e55f | 6648 | |
f56e7bba AD |
6649 | if (unlikely(igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TSIP))) { |
6650 | igb_ptp_rx_pktstamp(rx_ring->q_vector, va, skb); | |
6651 | va += IGB_TS_HDR_LEN; | |
6652 | size -= IGB_TS_HDR_LEN; | |
6653 | } | |
cbc8e55f | 6654 | |
f56e7bba | 6655 | if (likely(size <= IGB_RX_HDR_LEN)) { |
cbc8e55f AD |
6656 | memcpy(__skb_put(skb, size), va, ALIGN(size, sizeof(long))); |
6657 | ||
95dd44b4 AD |
6658 | /* page is not reserved, we can reuse buffer as-is */ |
6659 | if (likely(!igb_page_is_reserved(page))) | |
cbc8e55f AD |
6660 | return true; |
6661 | ||
6662 | /* this page cannot be reused so discard it */ | |
95dd44b4 | 6663 | __free_page(page); |
cbc8e55f AD |
6664 | return false; |
6665 | } | |
6666 | ||
f56e7bba AD |
6667 | /* we need the header to contain the greater of either ETH_HLEN or |
6668 | * 60 bytes if the skb->len is less than 60 for skb_pad. | |
6669 | */ | |
6670 | pull_len = eth_get_headlen(va, IGB_RX_HDR_LEN); | |
6671 | ||
6672 | /* align pull length to size of long to optimize memcpy performance */ | |
6673 | memcpy(__skb_put(skb, pull_len), va, ALIGN(pull_len, sizeof(long))); | |
6674 | ||
6675 | /* update all of the pointers */ | |
6676 | va += pull_len; | |
6677 | size -= pull_len; | |
6678 | ||
6679 | add_tail_frag: | |
cbc8e55f | 6680 | skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, page, |
f56e7bba | 6681 | (unsigned long)va & ~PAGE_MASK, size, truesize); |
cbc8e55f | 6682 | |
74e238ea AD |
6683 | return igb_can_reuse_rx_page(rx_buffer, page, truesize); |
6684 | } | |
cbc8e55f | 6685 | |
2e334eee AD |
6686 | static struct sk_buff *igb_fetch_rx_buffer(struct igb_ring *rx_ring, |
6687 | union e1000_adv_rx_desc *rx_desc, | |
6688 | struct sk_buff *skb) | |
6689 | { | |
6690 | struct igb_rx_buffer *rx_buffer; | |
6691 | struct page *page; | |
6692 | ||
6693 | rx_buffer = &rx_ring->rx_buffer_info[rx_ring->next_to_clean]; | |
2e334eee AD |
6694 | page = rx_buffer->page; |
6695 | prefetchw(page); | |
6696 | ||
6697 | if (likely(!skb)) { | |
6698 | void *page_addr = page_address(page) + | |
6699 | rx_buffer->page_offset; | |
6700 | ||
6701 | /* prefetch first cache line of first page */ | |
6702 | prefetch(page_addr); | |
6703 | #if L1_CACHE_BYTES < 128 | |
6704 | prefetch(page_addr + L1_CACHE_BYTES); | |
6705 | #endif | |
6706 | ||
6707 | /* allocate a skb to store the frags */ | |
67fd893e | 6708 | skb = napi_alloc_skb(&rx_ring->q_vector->napi, IGB_RX_HDR_LEN); |
2e334eee AD |
6709 | if (unlikely(!skb)) { |
6710 | rx_ring->rx_stats.alloc_failed++; | |
6711 | return NULL; | |
6712 | } | |
6713 | ||
b980ac18 | 6714 | /* we will be copying header into skb->data in |
2e334eee AD |
6715 | * pskb_may_pull so it is in our interest to prefetch |
6716 | * it now to avoid a possible cache miss | |
6717 | */ | |
6718 | prefetchw(skb->data); | |
6719 | } | |
6720 | ||
6721 | /* we are reusing so sync this buffer for CPU use */ | |
6722 | dma_sync_single_range_for_cpu(rx_ring->dev, | |
6723 | rx_buffer->dma, | |
6724 | rx_buffer->page_offset, | |
de78d1f9 | 6725 | IGB_RX_BUFSZ, |
2e334eee AD |
6726 | DMA_FROM_DEVICE); |
6727 | ||
6728 | /* pull page into skb */ | |
6729 | if (igb_add_rx_frag(rx_ring, rx_buffer, rx_desc, skb)) { | |
6730 | /* hand second half of page back to the ring */ | |
6731 | igb_reuse_rx_page(rx_ring, rx_buffer); | |
6732 | } else { | |
6733 | /* we are not reusing the buffer so unmap it */ | |
6734 | dma_unmap_page(rx_ring->dev, rx_buffer->dma, | |
6735 | PAGE_SIZE, DMA_FROM_DEVICE); | |
6736 | } | |
6737 | ||
6738 | /* clear contents of rx_buffer */ | |
6739 | rx_buffer->page = NULL; | |
6740 | ||
6741 | return skb; | |
6742 | } | |
6743 | ||
cd392f5c | 6744 | static inline void igb_rx_checksum(struct igb_ring *ring, |
3ceb90fd AD |
6745 | union e1000_adv_rx_desc *rx_desc, |
6746 | struct sk_buff *skb) | |
9d5c8243 | 6747 | { |
bc8acf2c | 6748 | skb_checksum_none_assert(skb); |
9d5c8243 | 6749 | |
294e7d78 | 6750 | /* Ignore Checksum bit is set */ |
3ceb90fd | 6751 | if (igb_test_staterr(rx_desc, E1000_RXD_STAT_IXSM)) |
294e7d78 AD |
6752 | return; |
6753 | ||
6754 | /* Rx checksum disabled via ethtool */ | |
6755 | if (!(ring->netdev->features & NETIF_F_RXCSUM)) | |
9d5c8243 | 6756 | return; |
85ad76b2 | 6757 | |
9d5c8243 | 6758 | /* TCP/UDP checksum error bit is set */ |
3ceb90fd AD |
6759 | if (igb_test_staterr(rx_desc, |
6760 | E1000_RXDEXT_STATERR_TCPE | | |
6761 | E1000_RXDEXT_STATERR_IPE)) { | |
b980ac18 | 6762 | /* work around errata with sctp packets where the TCPE aka |
b9473560 JB |
6763 | * L4E bit is set incorrectly on 64 byte (60 byte w/o crc) |
6764 | * packets, (aka let the stack check the crc32c) | |
6765 | */ | |
866cff06 AD |
6766 | if (!((skb->len == 60) && |
6767 | test_bit(IGB_RING_FLAG_RX_SCTP_CSUM, &ring->flags))) { | |
12dcd86b | 6768 | u64_stats_update_begin(&ring->rx_syncp); |
04a5fcaa | 6769 | ring->rx_stats.csum_err++; |
12dcd86b ED |
6770 | u64_stats_update_end(&ring->rx_syncp); |
6771 | } | |
9d5c8243 | 6772 | /* let the stack verify checksum errors */ |
9d5c8243 AK |
6773 | return; |
6774 | } | |
6775 | /* It must be a TCP or UDP packet with a valid checksum */ | |
3ceb90fd AD |
6776 | if (igb_test_staterr(rx_desc, E1000_RXD_STAT_TCPCS | |
6777 | E1000_RXD_STAT_UDPCS)) | |
9d5c8243 AK |
6778 | skb->ip_summed = CHECKSUM_UNNECESSARY; |
6779 | ||
3ceb90fd AD |
6780 | dev_dbg(ring->dev, "cksum success: bits %08X\n", |
6781 | le32_to_cpu(rx_desc->wb.upper.status_error)); | |
9d5c8243 AK |
6782 | } |
6783 | ||
077887c3 AD |
6784 | static inline void igb_rx_hash(struct igb_ring *ring, |
6785 | union e1000_adv_rx_desc *rx_desc, | |
6786 | struct sk_buff *skb) | |
6787 | { | |
6788 | if (ring->netdev->features & NETIF_F_RXHASH) | |
42bdf083 TH |
6789 | skb_set_hash(skb, |
6790 | le32_to_cpu(rx_desc->wb.lower.hi_dword.rss), | |
6791 | PKT_HASH_TYPE_L3); | |
077887c3 AD |
6792 | } |
6793 | ||
2e334eee | 6794 | /** |
b980ac18 JK |
6795 | * igb_is_non_eop - process handling of non-EOP buffers |
6796 | * @rx_ring: Rx ring being processed | |
6797 | * @rx_desc: Rx descriptor for current buffer | |
6798 | * @skb: current socket buffer containing buffer in progress | |
2e334eee | 6799 | * |
b980ac18 JK |
6800 | * This function updates next to clean. If the buffer is an EOP buffer |
6801 | * this function exits returning false, otherwise it will place the | |
6802 | * sk_buff in the next buffer to be chained and return true indicating | |
6803 | * that this is in fact a non-EOP buffer. | |
2e334eee AD |
6804 | **/ |
6805 | static bool igb_is_non_eop(struct igb_ring *rx_ring, | |
6806 | union e1000_adv_rx_desc *rx_desc) | |
6807 | { | |
6808 | u32 ntc = rx_ring->next_to_clean + 1; | |
6809 | ||
6810 | /* fetch, update, and store next to clean */ | |
6811 | ntc = (ntc < rx_ring->count) ? ntc : 0; | |
6812 | rx_ring->next_to_clean = ntc; | |
6813 | ||
6814 | prefetch(IGB_RX_DESC(rx_ring, ntc)); | |
6815 | ||
6816 | if (likely(igb_test_staterr(rx_desc, E1000_RXD_STAT_EOP))) | |
6817 | return false; | |
6818 | ||
6819 | return true; | |
6820 | } | |
6821 | ||
1a1c225b | 6822 | /** |
b980ac18 JK |
6823 | * igb_cleanup_headers - Correct corrupted or empty headers |
6824 | * @rx_ring: rx descriptor ring packet is being transacted on | |
6825 | * @rx_desc: pointer to the EOP Rx descriptor | |
6826 | * @skb: pointer to current skb being fixed | |
1a1c225b | 6827 | * |
b980ac18 JK |
6828 | * Address the case where we are pulling data in on pages only |
6829 | * and as such no data is present in the skb header. | |
1a1c225b | 6830 | * |
b980ac18 JK |
6831 | * In addition if skb is not at least 60 bytes we need to pad it so that |
6832 | * it is large enough to qualify as a valid Ethernet frame. | |
1a1c225b | 6833 | * |
b980ac18 | 6834 | * Returns true if an error was encountered and skb was freed. |
1a1c225b AD |
6835 | **/ |
6836 | static bool igb_cleanup_headers(struct igb_ring *rx_ring, | |
6837 | union e1000_adv_rx_desc *rx_desc, | |
6838 | struct sk_buff *skb) | |
6839 | { | |
1a1c225b AD |
6840 | if (unlikely((igb_test_staterr(rx_desc, |
6841 | E1000_RXDEXT_ERR_FRAME_ERR_MASK)))) { | |
6842 | struct net_device *netdev = rx_ring->netdev; | |
6843 | if (!(netdev->features & NETIF_F_RXALL)) { | |
6844 | dev_kfree_skb_any(skb); | |
6845 | return true; | |
6846 | } | |
6847 | } | |
6848 | ||
a94d9e22 AD |
6849 | /* if eth_skb_pad returns an error the skb was freed */ |
6850 | if (eth_skb_pad(skb)) | |
6851 | return true; | |
1a1c225b AD |
6852 | |
6853 | return false; | |
2d94d8ab AD |
6854 | } |
6855 | ||
db2ee5bd | 6856 | /** |
b980ac18 JK |
6857 | * igb_process_skb_fields - Populate skb header fields from Rx descriptor |
6858 | * @rx_ring: rx descriptor ring packet is being transacted on | |
6859 | * @rx_desc: pointer to the EOP Rx descriptor | |
6860 | * @skb: pointer to current skb being populated | |
db2ee5bd | 6861 | * |
b980ac18 JK |
6862 | * This function checks the ring, descriptor, and packet information in |
6863 | * order to populate the hash, checksum, VLAN, timestamp, protocol, and | |
6864 | * other fields within the skb. | |
db2ee5bd AD |
6865 | **/ |
6866 | static void igb_process_skb_fields(struct igb_ring *rx_ring, | |
6867 | union e1000_adv_rx_desc *rx_desc, | |
6868 | struct sk_buff *skb) | |
6869 | { | |
6870 | struct net_device *dev = rx_ring->netdev; | |
6871 | ||
6872 | igb_rx_hash(rx_ring, rx_desc, skb); | |
6873 | ||
6874 | igb_rx_checksum(rx_ring, rx_desc, skb); | |
6875 | ||
5499a968 JK |
6876 | if (igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TS) && |
6877 | !igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TSIP)) | |
6878 | igb_ptp_rx_rgtstamp(rx_ring->q_vector, skb); | |
db2ee5bd | 6879 | |
f646968f | 6880 | if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) && |
db2ee5bd AD |
6881 | igb_test_staterr(rx_desc, E1000_RXD_STAT_VP)) { |
6882 | u16 vid; | |
9005df38 | 6883 | |
db2ee5bd AD |
6884 | if (igb_test_staterr(rx_desc, E1000_RXDEXT_STATERR_LB) && |
6885 | test_bit(IGB_RING_FLAG_RX_LB_VLAN_BSWAP, &rx_ring->flags)) | |
6886 | vid = be16_to_cpu(rx_desc->wb.upper.vlan); | |
6887 | else | |
6888 | vid = le16_to_cpu(rx_desc->wb.upper.vlan); | |
6889 | ||
86a9bad3 | 6890 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); |
db2ee5bd AD |
6891 | } |
6892 | ||
6893 | skb_record_rx_queue(skb, rx_ring->queue_index); | |
6894 | ||
6895 | skb->protocol = eth_type_trans(skb, rx_ring->netdev); | |
6896 | } | |
6897 | ||
2e334eee | 6898 | static bool igb_clean_rx_irq(struct igb_q_vector *q_vector, const int budget) |
9d5c8243 | 6899 | { |
0ba82994 | 6900 | struct igb_ring *rx_ring = q_vector->rx.ring; |
1a1c225b | 6901 | struct sk_buff *skb = rx_ring->skb; |
9d5c8243 | 6902 | unsigned int total_bytes = 0, total_packets = 0; |
16eb8815 | 6903 | u16 cleaned_count = igb_desc_unused(rx_ring); |
9d5c8243 | 6904 | |
57ba34c9 | 6905 | while (likely(total_packets < budget)) { |
2e334eee | 6906 | union e1000_adv_rx_desc *rx_desc; |
bf36c1a0 | 6907 | |
2e334eee AD |
6908 | /* return some buffers to hardware, one at a time is too slow */ |
6909 | if (cleaned_count >= IGB_RX_BUFFER_WRITE) { | |
6910 | igb_alloc_rx_buffers(rx_ring, cleaned_count); | |
6911 | cleaned_count = 0; | |
6912 | } | |
bf36c1a0 | 6913 | |
2e334eee | 6914 | rx_desc = IGB_RX_DESC(rx_ring, rx_ring->next_to_clean); |
16eb8815 | 6915 | |
124b74c1 | 6916 | if (!rx_desc->wb.upper.status_error) |
2e334eee | 6917 | break; |
9d5c8243 | 6918 | |
74e238ea AD |
6919 | /* This memory barrier is needed to keep us from reading |
6920 | * any other fields out of the rx_desc until we know the | |
124b74c1 | 6921 | * descriptor has been written back |
74e238ea | 6922 | */ |
124b74c1 | 6923 | dma_rmb(); |
74e238ea | 6924 | |
2e334eee | 6925 | /* retrieve a buffer from the ring */ |
f9d40f6a | 6926 | skb = igb_fetch_rx_buffer(rx_ring, rx_desc, skb); |
9d5c8243 | 6927 | |
2e334eee AD |
6928 | /* exit if we failed to retrieve a buffer */ |
6929 | if (!skb) | |
6930 | break; | |
1a1c225b | 6931 | |
2e334eee | 6932 | cleaned_count++; |
1a1c225b | 6933 | |
2e334eee AD |
6934 | /* fetch next buffer in frame if non-eop */ |
6935 | if (igb_is_non_eop(rx_ring, rx_desc)) | |
6936 | continue; | |
1a1c225b AD |
6937 | |
6938 | /* verify the packet layout is correct */ | |
6939 | if (igb_cleanup_headers(rx_ring, rx_desc, skb)) { | |
6940 | skb = NULL; | |
6941 | continue; | |
9d5c8243 | 6942 | } |
9d5c8243 | 6943 | |
db2ee5bd | 6944 | /* probably a little skewed due to removing CRC */ |
3ceb90fd | 6945 | total_bytes += skb->len; |
3ceb90fd | 6946 | |
db2ee5bd AD |
6947 | /* populate checksum, timestamp, VLAN, and protocol */ |
6948 | igb_process_skb_fields(rx_ring, rx_desc, skb); | |
3ceb90fd | 6949 | |
b2cb09b1 | 6950 | napi_gro_receive(&q_vector->napi, skb); |
9d5c8243 | 6951 | |
1a1c225b AD |
6952 | /* reset skb pointer */ |
6953 | skb = NULL; | |
6954 | ||
2e334eee AD |
6955 | /* update budget accounting */ |
6956 | total_packets++; | |
57ba34c9 | 6957 | } |
bf36c1a0 | 6958 | |
1a1c225b AD |
6959 | /* place incomplete frames back on ring for completion */ |
6960 | rx_ring->skb = skb; | |
6961 | ||
12dcd86b | 6962 | u64_stats_update_begin(&rx_ring->rx_syncp); |
9d5c8243 AK |
6963 | rx_ring->rx_stats.packets += total_packets; |
6964 | rx_ring->rx_stats.bytes += total_bytes; | |
12dcd86b | 6965 | u64_stats_update_end(&rx_ring->rx_syncp); |
0ba82994 AD |
6966 | q_vector->rx.total_packets += total_packets; |
6967 | q_vector->rx.total_bytes += total_bytes; | |
c023cd88 AD |
6968 | |
6969 | if (cleaned_count) | |
cd392f5c | 6970 | igb_alloc_rx_buffers(rx_ring, cleaned_count); |
c023cd88 | 6971 | |
da1f1dfe | 6972 | return total_packets < budget; |
9d5c8243 AK |
6973 | } |
6974 | ||
c023cd88 | 6975 | static bool igb_alloc_mapped_page(struct igb_ring *rx_ring, |
06034649 | 6976 | struct igb_rx_buffer *bi) |
c023cd88 AD |
6977 | { |
6978 | struct page *page = bi->page; | |
cbc8e55f | 6979 | dma_addr_t dma; |
c023cd88 | 6980 | |
cbc8e55f AD |
6981 | /* since we are recycling buffers we should seldom need to alloc */ |
6982 | if (likely(page)) | |
c023cd88 AD |
6983 | return true; |
6984 | ||
cbc8e55f | 6985 | /* alloc new page for storage */ |
42b17f09 | 6986 | page = dev_alloc_page(); |
cbc8e55f AD |
6987 | if (unlikely(!page)) { |
6988 | rx_ring->rx_stats.alloc_failed++; | |
6989 | return false; | |
c023cd88 AD |
6990 | } |
6991 | ||
cbc8e55f AD |
6992 | /* map page for use */ |
6993 | dma = dma_map_page(rx_ring->dev, page, 0, PAGE_SIZE, DMA_FROM_DEVICE); | |
c023cd88 | 6994 | |
b980ac18 | 6995 | /* if mapping failed free memory back to system since |
cbc8e55f AD |
6996 | * there isn't much point in holding memory we can't use |
6997 | */ | |
1a1c225b | 6998 | if (dma_mapping_error(rx_ring->dev, dma)) { |
cbc8e55f AD |
6999 | __free_page(page); |
7000 | ||
c023cd88 AD |
7001 | rx_ring->rx_stats.alloc_failed++; |
7002 | return false; | |
7003 | } | |
7004 | ||
1a1c225b | 7005 | bi->dma = dma; |
cbc8e55f AD |
7006 | bi->page = page; |
7007 | bi->page_offset = 0; | |
1a1c225b | 7008 | |
c023cd88 AD |
7009 | return true; |
7010 | } | |
7011 | ||
9d5c8243 | 7012 | /** |
b980ac18 JK |
7013 | * igb_alloc_rx_buffers - Replace used receive buffers; packet split |
7014 | * @adapter: address of board private structure | |
9d5c8243 | 7015 | **/ |
cd392f5c | 7016 | void igb_alloc_rx_buffers(struct igb_ring *rx_ring, u16 cleaned_count) |
9d5c8243 | 7017 | { |
9d5c8243 | 7018 | union e1000_adv_rx_desc *rx_desc; |
06034649 | 7019 | struct igb_rx_buffer *bi; |
c023cd88 | 7020 | u16 i = rx_ring->next_to_use; |
9d5c8243 | 7021 | |
cbc8e55f AD |
7022 | /* nothing to do */ |
7023 | if (!cleaned_count) | |
7024 | return; | |
7025 | ||
60136906 | 7026 | rx_desc = IGB_RX_DESC(rx_ring, i); |
06034649 | 7027 | bi = &rx_ring->rx_buffer_info[i]; |
c023cd88 | 7028 | i -= rx_ring->count; |
9d5c8243 | 7029 | |
cbc8e55f | 7030 | do { |
1a1c225b | 7031 | if (!igb_alloc_mapped_page(rx_ring, bi)) |
c023cd88 | 7032 | break; |
9d5c8243 | 7033 | |
b980ac18 | 7034 | /* Refresh the desc even if buffer_addrs didn't change |
cbc8e55f AD |
7035 | * because each write-back erases this info. |
7036 | */ | |
f9d40f6a | 7037 | rx_desc->read.pkt_addr = cpu_to_le64(bi->dma + bi->page_offset); |
9d5c8243 | 7038 | |
c023cd88 AD |
7039 | rx_desc++; |
7040 | bi++; | |
9d5c8243 | 7041 | i++; |
c023cd88 | 7042 | if (unlikely(!i)) { |
60136906 | 7043 | rx_desc = IGB_RX_DESC(rx_ring, 0); |
06034649 | 7044 | bi = rx_ring->rx_buffer_info; |
c023cd88 AD |
7045 | i -= rx_ring->count; |
7046 | } | |
7047 | ||
95dd44b4 AD |
7048 | /* clear the status bits for the next_to_use descriptor */ |
7049 | rx_desc->wb.upper.status_error = 0; | |
cbc8e55f AD |
7050 | |
7051 | cleaned_count--; | |
7052 | } while (cleaned_count); | |
9d5c8243 | 7053 | |
c023cd88 AD |
7054 | i += rx_ring->count; |
7055 | ||
9d5c8243 | 7056 | if (rx_ring->next_to_use != i) { |
cbc8e55f | 7057 | /* record the next descriptor to use */ |
9d5c8243 | 7058 | rx_ring->next_to_use = i; |
9d5c8243 | 7059 | |
cbc8e55f AD |
7060 | /* update next to alloc since we have filled the ring */ |
7061 | rx_ring->next_to_alloc = i; | |
7062 | ||
b980ac18 | 7063 | /* Force memory writes to complete before letting h/w |
9d5c8243 AK |
7064 | * know there are new descriptors to fetch. (Only |
7065 | * applicable for weak-ordered memory model archs, | |
cbc8e55f AD |
7066 | * such as IA-64). |
7067 | */ | |
9d5c8243 | 7068 | wmb(); |
fce99e34 | 7069 | writel(i, rx_ring->tail); |
9d5c8243 AK |
7070 | } |
7071 | } | |
7072 | ||
7073 | /** | |
7074 | * igb_mii_ioctl - | |
7075 | * @netdev: | |
7076 | * @ifreq: | |
7077 | * @cmd: | |
7078 | **/ | |
7079 | static int igb_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
7080 | { | |
7081 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7082 | struct mii_ioctl_data *data = if_mii(ifr); | |
7083 | ||
7084 | if (adapter->hw.phy.media_type != e1000_media_type_copper) | |
7085 | return -EOPNOTSUPP; | |
7086 | ||
7087 | switch (cmd) { | |
7088 | case SIOCGMIIPHY: | |
7089 | data->phy_id = adapter->hw.phy.addr; | |
7090 | break; | |
7091 | case SIOCGMIIREG: | |
f5f4cf08 | 7092 | if (igb_read_phy_reg(&adapter->hw, data->reg_num & 0x1F, |
9005df38 | 7093 | &data->val_out)) |
9d5c8243 AK |
7094 | return -EIO; |
7095 | break; | |
7096 | case SIOCSMIIREG: | |
7097 | default: | |
7098 | return -EOPNOTSUPP; | |
7099 | } | |
7100 | return 0; | |
7101 | } | |
7102 | ||
7103 | /** | |
7104 | * igb_ioctl - | |
7105 | * @netdev: | |
7106 | * @ifreq: | |
7107 | * @cmd: | |
7108 | **/ | |
7109 | static int igb_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
7110 | { | |
7111 | switch (cmd) { | |
7112 | case SIOCGMIIPHY: | |
7113 | case SIOCGMIIREG: | |
7114 | case SIOCSMIIREG: | |
7115 | return igb_mii_ioctl(netdev, ifr, cmd); | |
6ab5f7b2 JK |
7116 | case SIOCGHWTSTAMP: |
7117 | return igb_ptp_get_ts_config(netdev, ifr); | |
c6cb090b | 7118 | case SIOCSHWTSTAMP: |
6ab5f7b2 | 7119 | return igb_ptp_set_ts_config(netdev, ifr); |
9d5c8243 AK |
7120 | default: |
7121 | return -EOPNOTSUPP; | |
7122 | } | |
7123 | } | |
7124 | ||
94826487 TF |
7125 | void igb_read_pci_cfg(struct e1000_hw *hw, u32 reg, u16 *value) |
7126 | { | |
7127 | struct igb_adapter *adapter = hw->back; | |
7128 | ||
7129 | pci_read_config_word(adapter->pdev, reg, value); | |
7130 | } | |
7131 | ||
7132 | void igb_write_pci_cfg(struct e1000_hw *hw, u32 reg, u16 *value) | |
7133 | { | |
7134 | struct igb_adapter *adapter = hw->back; | |
7135 | ||
7136 | pci_write_config_word(adapter->pdev, reg, *value); | |
7137 | } | |
7138 | ||
009bc06e AD |
7139 | s32 igb_read_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value) |
7140 | { | |
7141 | struct igb_adapter *adapter = hw->back; | |
009bc06e | 7142 | |
23d028cc | 7143 | if (pcie_capability_read_word(adapter->pdev, reg, value)) |
009bc06e AD |
7144 | return -E1000_ERR_CONFIG; |
7145 | ||
009bc06e AD |
7146 | return 0; |
7147 | } | |
7148 | ||
7149 | s32 igb_write_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value) | |
7150 | { | |
7151 | struct igb_adapter *adapter = hw->back; | |
009bc06e | 7152 | |
23d028cc | 7153 | if (pcie_capability_write_word(adapter->pdev, reg, *value)) |
009bc06e AD |
7154 | return -E1000_ERR_CONFIG; |
7155 | ||
009bc06e AD |
7156 | return 0; |
7157 | } | |
7158 | ||
c8f44aff | 7159 | static void igb_vlan_mode(struct net_device *netdev, netdev_features_t features) |
9d5c8243 AK |
7160 | { |
7161 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7162 | struct e1000_hw *hw = &adapter->hw; | |
7163 | u32 ctrl, rctl; | |
f646968f | 7164 | bool enable = !!(features & NETIF_F_HW_VLAN_CTAG_RX); |
9d5c8243 | 7165 | |
5faf030c | 7166 | if (enable) { |
9d5c8243 AK |
7167 | /* enable VLAN tag insert/strip */ |
7168 | ctrl = rd32(E1000_CTRL); | |
7169 | ctrl |= E1000_CTRL_VME; | |
7170 | wr32(E1000_CTRL, ctrl); | |
7171 | ||
51466239 | 7172 | /* Disable CFI check */ |
9d5c8243 | 7173 | rctl = rd32(E1000_RCTL); |
9d5c8243 AK |
7174 | rctl &= ~E1000_RCTL_CFIEN; |
7175 | wr32(E1000_RCTL, rctl); | |
9d5c8243 AK |
7176 | } else { |
7177 | /* disable VLAN tag insert/strip */ | |
7178 | ctrl = rd32(E1000_CTRL); | |
7179 | ctrl &= ~E1000_CTRL_VME; | |
7180 | wr32(E1000_CTRL, ctrl); | |
9d5c8243 AK |
7181 | } |
7182 | ||
e1739522 | 7183 | igb_rlpml_set(adapter); |
9d5c8243 AK |
7184 | } |
7185 | ||
80d5c368 PM |
7186 | static int igb_vlan_rx_add_vid(struct net_device *netdev, |
7187 | __be16 proto, u16 vid) | |
9d5c8243 AK |
7188 | { |
7189 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7190 | struct e1000_hw *hw = &adapter->hw; | |
4ae196df | 7191 | int pf_id = adapter->vfs_allocated_count; |
9d5c8243 | 7192 | |
51466239 AD |
7193 | /* attempt to add filter to vlvf array */ |
7194 | igb_vlvf_set(adapter, vid, true, pf_id); | |
4ae196df | 7195 | |
51466239 AD |
7196 | /* add the filter since PF can receive vlans w/o entry in vlvf */ |
7197 | igb_vfta_set(hw, vid, true); | |
b2cb09b1 JP |
7198 | |
7199 | set_bit(vid, adapter->active_vlans); | |
8e586137 JP |
7200 | |
7201 | return 0; | |
9d5c8243 AK |
7202 | } |
7203 | ||
80d5c368 PM |
7204 | static int igb_vlan_rx_kill_vid(struct net_device *netdev, |
7205 | __be16 proto, u16 vid) | |
9d5c8243 AK |
7206 | { |
7207 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7208 | struct e1000_hw *hw = &adapter->hw; | |
4ae196df | 7209 | int pf_id = adapter->vfs_allocated_count; |
51466239 | 7210 | s32 err; |
9d5c8243 | 7211 | |
51466239 AD |
7212 | /* remove vlan from VLVF table array */ |
7213 | err = igb_vlvf_set(adapter, vid, false, pf_id); | |
9d5c8243 | 7214 | |
51466239 AD |
7215 | /* if vid was not present in VLVF just remove it from table */ |
7216 | if (err) | |
4ae196df | 7217 | igb_vfta_set(hw, vid, false); |
b2cb09b1 JP |
7218 | |
7219 | clear_bit(vid, adapter->active_vlans); | |
8e586137 JP |
7220 | |
7221 | return 0; | |
9d5c8243 AK |
7222 | } |
7223 | ||
7224 | static void igb_restore_vlan(struct igb_adapter *adapter) | |
7225 | { | |
b2cb09b1 | 7226 | u16 vid; |
9d5c8243 | 7227 | |
5faf030c AD |
7228 | igb_vlan_mode(adapter->netdev, adapter->netdev->features); |
7229 | ||
b2cb09b1 | 7230 | for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) |
80d5c368 | 7231 | igb_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid); |
9d5c8243 AK |
7232 | } |
7233 | ||
14ad2513 | 7234 | int igb_set_spd_dplx(struct igb_adapter *adapter, u32 spd, u8 dplx) |
9d5c8243 | 7235 | { |
090b1795 | 7236 | struct pci_dev *pdev = adapter->pdev; |
9d5c8243 AK |
7237 | struct e1000_mac_info *mac = &adapter->hw.mac; |
7238 | ||
7239 | mac->autoneg = 0; | |
7240 | ||
14ad2513 | 7241 | /* Make sure dplx is at most 1 bit and lsb of speed is not set |
b980ac18 JK |
7242 | * for the switch() below to work |
7243 | */ | |
14ad2513 DD |
7244 | if ((spd & 1) || (dplx & ~1)) |
7245 | goto err_inval; | |
7246 | ||
f502ef7d AA |
7247 | /* Fiber NIC's only allow 1000 gbps Full duplex |
7248 | * and 100Mbps Full duplex for 100baseFx sfp | |
7249 | */ | |
7250 | if (adapter->hw.phy.media_type == e1000_media_type_internal_serdes) { | |
7251 | switch (spd + dplx) { | |
7252 | case SPEED_10 + DUPLEX_HALF: | |
7253 | case SPEED_10 + DUPLEX_FULL: | |
7254 | case SPEED_100 + DUPLEX_HALF: | |
7255 | goto err_inval; | |
7256 | default: | |
7257 | break; | |
7258 | } | |
7259 | } | |
cd2638a8 | 7260 | |
14ad2513 | 7261 | switch (spd + dplx) { |
9d5c8243 AK |
7262 | case SPEED_10 + DUPLEX_HALF: |
7263 | mac->forced_speed_duplex = ADVERTISE_10_HALF; | |
7264 | break; | |
7265 | case SPEED_10 + DUPLEX_FULL: | |
7266 | mac->forced_speed_duplex = ADVERTISE_10_FULL; | |
7267 | break; | |
7268 | case SPEED_100 + DUPLEX_HALF: | |
7269 | mac->forced_speed_duplex = ADVERTISE_100_HALF; | |
7270 | break; | |
7271 | case SPEED_100 + DUPLEX_FULL: | |
7272 | mac->forced_speed_duplex = ADVERTISE_100_FULL; | |
7273 | break; | |
7274 | case SPEED_1000 + DUPLEX_FULL: | |
7275 | mac->autoneg = 1; | |
7276 | adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL; | |
7277 | break; | |
7278 | case SPEED_1000 + DUPLEX_HALF: /* not supported */ | |
7279 | default: | |
14ad2513 | 7280 | goto err_inval; |
9d5c8243 | 7281 | } |
8376dad0 JB |
7282 | |
7283 | /* clear MDI, MDI(-X) override is only allowed when autoneg enabled */ | |
7284 | adapter->hw.phy.mdix = AUTO_ALL_MODES; | |
7285 | ||
9d5c8243 | 7286 | return 0; |
14ad2513 DD |
7287 | |
7288 | err_inval: | |
7289 | dev_err(&pdev->dev, "Unsupported Speed/Duplex configuration\n"); | |
7290 | return -EINVAL; | |
9d5c8243 AK |
7291 | } |
7292 | ||
749ab2cd YZ |
7293 | static int __igb_shutdown(struct pci_dev *pdev, bool *enable_wake, |
7294 | bool runtime) | |
9d5c8243 AK |
7295 | { |
7296 | struct net_device *netdev = pci_get_drvdata(pdev); | |
7297 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7298 | struct e1000_hw *hw = &adapter->hw; | |
2d064c06 | 7299 | u32 ctrl, rctl, status; |
749ab2cd | 7300 | u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol; |
9d5c8243 AK |
7301 | #ifdef CONFIG_PM |
7302 | int retval = 0; | |
7303 | #endif | |
7304 | ||
7305 | netif_device_detach(netdev); | |
7306 | ||
a88f10ec | 7307 | if (netif_running(netdev)) |
749ab2cd | 7308 | __igb_close(netdev, true); |
a88f10ec | 7309 | |
047e0030 | 7310 | igb_clear_interrupt_scheme(adapter); |
9d5c8243 AK |
7311 | |
7312 | #ifdef CONFIG_PM | |
7313 | retval = pci_save_state(pdev); | |
7314 | if (retval) | |
7315 | return retval; | |
7316 | #endif | |
7317 | ||
7318 | status = rd32(E1000_STATUS); | |
7319 | if (status & E1000_STATUS_LU) | |
7320 | wufc &= ~E1000_WUFC_LNKC; | |
7321 | ||
7322 | if (wufc) { | |
7323 | igb_setup_rctl(adapter); | |
ff41f8dc | 7324 | igb_set_rx_mode(netdev); |
9d5c8243 AK |
7325 | |
7326 | /* turn on all-multi mode if wake on multicast is enabled */ | |
7327 | if (wufc & E1000_WUFC_MC) { | |
7328 | rctl = rd32(E1000_RCTL); | |
7329 | rctl |= E1000_RCTL_MPE; | |
7330 | wr32(E1000_RCTL, rctl); | |
7331 | } | |
7332 | ||
7333 | ctrl = rd32(E1000_CTRL); | |
7334 | /* advertise wake from D3Cold */ | |
7335 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
7336 | /* phy power management enable */ | |
7337 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
7338 | ctrl |= E1000_CTRL_ADVD3WUC; | |
7339 | wr32(E1000_CTRL, ctrl); | |
7340 | ||
9d5c8243 | 7341 | /* Allow time for pending master requests to run */ |
330a6d6a | 7342 | igb_disable_pcie_master(hw); |
9d5c8243 AK |
7343 | |
7344 | wr32(E1000_WUC, E1000_WUC_PME_EN); | |
7345 | wr32(E1000_WUFC, wufc); | |
9d5c8243 AK |
7346 | } else { |
7347 | wr32(E1000_WUC, 0); | |
7348 | wr32(E1000_WUFC, 0); | |
9d5c8243 AK |
7349 | } |
7350 | ||
3fe7c4c9 RW |
7351 | *enable_wake = wufc || adapter->en_mng_pt; |
7352 | if (!*enable_wake) | |
88a268c1 NN |
7353 | igb_power_down_link(adapter); |
7354 | else | |
7355 | igb_power_up_link(adapter); | |
9d5c8243 AK |
7356 | |
7357 | /* Release control of h/w to f/w. If f/w is AMT enabled, this | |
b980ac18 JK |
7358 | * would have already happened in close and is redundant. |
7359 | */ | |
9d5c8243 AK |
7360 | igb_release_hw_control(adapter); |
7361 | ||
7362 | pci_disable_device(pdev); | |
7363 | ||
9d5c8243 AK |
7364 | return 0; |
7365 | } | |
7366 | ||
7367 | #ifdef CONFIG_PM | |
d9dd966d | 7368 | #ifdef CONFIG_PM_SLEEP |
749ab2cd | 7369 | static int igb_suspend(struct device *dev) |
3fe7c4c9 RW |
7370 | { |
7371 | int retval; | |
7372 | bool wake; | |
749ab2cd | 7373 | struct pci_dev *pdev = to_pci_dev(dev); |
3fe7c4c9 | 7374 | |
749ab2cd | 7375 | retval = __igb_shutdown(pdev, &wake, 0); |
3fe7c4c9 RW |
7376 | if (retval) |
7377 | return retval; | |
7378 | ||
7379 | if (wake) { | |
7380 | pci_prepare_to_sleep(pdev); | |
7381 | } else { | |
7382 | pci_wake_from_d3(pdev, false); | |
7383 | pci_set_power_state(pdev, PCI_D3hot); | |
7384 | } | |
7385 | ||
7386 | return 0; | |
7387 | } | |
d9dd966d | 7388 | #endif /* CONFIG_PM_SLEEP */ |
3fe7c4c9 | 7389 | |
749ab2cd | 7390 | static int igb_resume(struct device *dev) |
9d5c8243 | 7391 | { |
749ab2cd | 7392 | struct pci_dev *pdev = to_pci_dev(dev); |
9d5c8243 AK |
7393 | struct net_device *netdev = pci_get_drvdata(pdev); |
7394 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7395 | struct e1000_hw *hw = &adapter->hw; | |
7396 | u32 err; | |
7397 | ||
7398 | pci_set_power_state(pdev, PCI_D0); | |
7399 | pci_restore_state(pdev); | |
b94f2d77 | 7400 | pci_save_state(pdev); |
42bfd33a | 7401 | |
17a402a0 CW |
7402 | if (!pci_device_is_present(pdev)) |
7403 | return -ENODEV; | |
aed5dec3 | 7404 | err = pci_enable_device_mem(pdev); |
9d5c8243 AK |
7405 | if (err) { |
7406 | dev_err(&pdev->dev, | |
7407 | "igb: Cannot enable PCI device from suspend\n"); | |
7408 | return err; | |
7409 | } | |
7410 | pci_set_master(pdev); | |
7411 | ||
7412 | pci_enable_wake(pdev, PCI_D3hot, 0); | |
7413 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
7414 | ||
53c7d064 | 7415 | if (igb_init_interrupt_scheme(adapter, true)) { |
a88f10ec | 7416 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); |
3eb14ea8 | 7417 | rtnl_unlock(); |
a88f10ec | 7418 | return -ENOMEM; |
9d5c8243 AK |
7419 | } |
7420 | ||
9d5c8243 | 7421 | igb_reset(adapter); |
a8564f03 AD |
7422 | |
7423 | /* let the f/w know that the h/w is now under the control of the | |
b980ac18 JK |
7424 | * driver. |
7425 | */ | |
a8564f03 AD |
7426 | igb_get_hw_control(adapter); |
7427 | ||
9d5c8243 AK |
7428 | wr32(E1000_WUS, ~0); |
7429 | ||
749ab2cd | 7430 | if (netdev->flags & IFF_UP) { |
0c2cc02e | 7431 | rtnl_lock(); |
749ab2cd | 7432 | err = __igb_open(netdev, true); |
0c2cc02e | 7433 | rtnl_unlock(); |
a88f10ec AD |
7434 | if (err) |
7435 | return err; | |
7436 | } | |
9d5c8243 AK |
7437 | |
7438 | netif_device_attach(netdev); | |
749ab2cd YZ |
7439 | return 0; |
7440 | } | |
7441 | ||
749ab2cd YZ |
7442 | static int igb_runtime_idle(struct device *dev) |
7443 | { | |
7444 | struct pci_dev *pdev = to_pci_dev(dev); | |
7445 | struct net_device *netdev = pci_get_drvdata(pdev); | |
7446 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7447 | ||
7448 | if (!igb_has_link(adapter)) | |
7449 | pm_schedule_suspend(dev, MSEC_PER_SEC * 5); | |
7450 | ||
7451 | return -EBUSY; | |
7452 | } | |
7453 | ||
7454 | static int igb_runtime_suspend(struct device *dev) | |
7455 | { | |
7456 | struct pci_dev *pdev = to_pci_dev(dev); | |
7457 | int retval; | |
7458 | bool wake; | |
7459 | ||
7460 | retval = __igb_shutdown(pdev, &wake, 1); | |
7461 | if (retval) | |
7462 | return retval; | |
7463 | ||
7464 | if (wake) { | |
7465 | pci_prepare_to_sleep(pdev); | |
7466 | } else { | |
7467 | pci_wake_from_d3(pdev, false); | |
7468 | pci_set_power_state(pdev, PCI_D3hot); | |
7469 | } | |
9d5c8243 | 7470 | |
9d5c8243 AK |
7471 | return 0; |
7472 | } | |
749ab2cd YZ |
7473 | |
7474 | static int igb_runtime_resume(struct device *dev) | |
7475 | { | |
7476 | return igb_resume(dev); | |
7477 | } | |
d61c81cb | 7478 | #endif /* CONFIG_PM */ |
9d5c8243 AK |
7479 | |
7480 | static void igb_shutdown(struct pci_dev *pdev) | |
7481 | { | |
3fe7c4c9 RW |
7482 | bool wake; |
7483 | ||
749ab2cd | 7484 | __igb_shutdown(pdev, &wake, 0); |
3fe7c4c9 RW |
7485 | |
7486 | if (system_state == SYSTEM_POWER_OFF) { | |
7487 | pci_wake_from_d3(pdev, wake); | |
7488 | pci_set_power_state(pdev, PCI_D3hot); | |
7489 | } | |
9d5c8243 AK |
7490 | } |
7491 | ||
fa44f2f1 GR |
7492 | #ifdef CONFIG_PCI_IOV |
7493 | static int igb_sriov_reinit(struct pci_dev *dev) | |
7494 | { | |
7495 | struct net_device *netdev = pci_get_drvdata(dev); | |
7496 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7497 | struct pci_dev *pdev = adapter->pdev; | |
7498 | ||
7499 | rtnl_lock(); | |
7500 | ||
7501 | if (netif_running(netdev)) | |
7502 | igb_close(netdev); | |
76252723 SA |
7503 | else |
7504 | igb_reset(adapter); | |
fa44f2f1 GR |
7505 | |
7506 | igb_clear_interrupt_scheme(adapter); | |
7507 | ||
7508 | igb_init_queue_configuration(adapter); | |
7509 | ||
7510 | if (igb_init_interrupt_scheme(adapter, true)) { | |
f468adc9 | 7511 | rtnl_unlock(); |
fa44f2f1 GR |
7512 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); |
7513 | return -ENOMEM; | |
7514 | } | |
7515 | ||
7516 | if (netif_running(netdev)) | |
7517 | igb_open(netdev); | |
7518 | ||
7519 | rtnl_unlock(); | |
7520 | ||
7521 | return 0; | |
7522 | } | |
7523 | ||
7524 | static int igb_pci_disable_sriov(struct pci_dev *dev) | |
7525 | { | |
7526 | int err = igb_disable_sriov(dev); | |
7527 | ||
7528 | if (!err) | |
7529 | err = igb_sriov_reinit(dev); | |
7530 | ||
7531 | return err; | |
7532 | } | |
7533 | ||
7534 | static int igb_pci_enable_sriov(struct pci_dev *dev, int num_vfs) | |
7535 | { | |
7536 | int err = igb_enable_sriov(dev, num_vfs); | |
7537 | ||
7538 | if (err) | |
7539 | goto out; | |
7540 | ||
7541 | err = igb_sriov_reinit(dev); | |
7542 | if (!err) | |
7543 | return num_vfs; | |
7544 | ||
7545 | out: | |
7546 | return err; | |
7547 | } | |
7548 | ||
7549 | #endif | |
7550 | static int igb_pci_sriov_configure(struct pci_dev *dev, int num_vfs) | |
7551 | { | |
7552 | #ifdef CONFIG_PCI_IOV | |
7553 | if (num_vfs == 0) | |
7554 | return igb_pci_disable_sriov(dev); | |
7555 | else | |
7556 | return igb_pci_enable_sriov(dev, num_vfs); | |
7557 | #endif | |
7558 | return 0; | |
7559 | } | |
7560 | ||
9d5c8243 | 7561 | #ifdef CONFIG_NET_POLL_CONTROLLER |
b980ac18 | 7562 | /* Polling 'interrupt' - used by things like netconsole to send skbs |
9d5c8243 AK |
7563 | * without having to re-enable interrupts. It's not called while |
7564 | * the interrupt routine is executing. | |
7565 | */ | |
7566 | static void igb_netpoll(struct net_device *netdev) | |
7567 | { | |
7568 | struct igb_adapter *adapter = netdev_priv(netdev); | |
eebbbdba | 7569 | struct e1000_hw *hw = &adapter->hw; |
0d1ae7f4 | 7570 | struct igb_q_vector *q_vector; |
9d5c8243 | 7571 | int i; |
9d5c8243 | 7572 | |
047e0030 | 7573 | for (i = 0; i < adapter->num_q_vectors; i++) { |
0d1ae7f4 | 7574 | q_vector = adapter->q_vector[i]; |
cd14ef54 | 7575 | if (adapter->flags & IGB_FLAG_HAS_MSIX) |
0d1ae7f4 AD |
7576 | wr32(E1000_EIMC, q_vector->eims_value); |
7577 | else | |
7578 | igb_irq_disable(adapter); | |
047e0030 | 7579 | napi_schedule(&q_vector->napi); |
eebbbdba | 7580 | } |
9d5c8243 AK |
7581 | } |
7582 | #endif /* CONFIG_NET_POLL_CONTROLLER */ | |
7583 | ||
7584 | /** | |
b980ac18 JK |
7585 | * igb_io_error_detected - called when PCI error is detected |
7586 | * @pdev: Pointer to PCI device | |
7587 | * @state: The current pci connection state | |
9d5c8243 | 7588 | * |
b980ac18 JK |
7589 | * This function is called after a PCI bus error affecting |
7590 | * this device has been detected. | |
7591 | **/ | |
9d5c8243 AK |
7592 | static pci_ers_result_t igb_io_error_detected(struct pci_dev *pdev, |
7593 | pci_channel_state_t state) | |
7594 | { | |
7595 | struct net_device *netdev = pci_get_drvdata(pdev); | |
7596 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7597 | ||
7598 | netif_device_detach(netdev); | |
7599 | ||
59ed6eec AD |
7600 | if (state == pci_channel_io_perm_failure) |
7601 | return PCI_ERS_RESULT_DISCONNECT; | |
7602 | ||
9d5c8243 AK |
7603 | if (netif_running(netdev)) |
7604 | igb_down(adapter); | |
7605 | pci_disable_device(pdev); | |
7606 | ||
7607 | /* Request a slot slot reset. */ | |
7608 | return PCI_ERS_RESULT_NEED_RESET; | |
7609 | } | |
7610 | ||
7611 | /** | |
b980ac18 JK |
7612 | * igb_io_slot_reset - called after the pci bus has been reset. |
7613 | * @pdev: Pointer to PCI device | |
9d5c8243 | 7614 | * |
b980ac18 JK |
7615 | * Restart the card from scratch, as if from a cold-boot. Implementation |
7616 | * resembles the first-half of the igb_resume routine. | |
7617 | **/ | |
9d5c8243 AK |
7618 | static pci_ers_result_t igb_io_slot_reset(struct pci_dev *pdev) |
7619 | { | |
7620 | struct net_device *netdev = pci_get_drvdata(pdev); | |
7621 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7622 | struct e1000_hw *hw = &adapter->hw; | |
40a914fa | 7623 | pci_ers_result_t result; |
42bfd33a | 7624 | int err; |
9d5c8243 | 7625 | |
aed5dec3 | 7626 | if (pci_enable_device_mem(pdev)) { |
9d5c8243 AK |
7627 | dev_err(&pdev->dev, |
7628 | "Cannot re-enable PCI device after reset.\n"); | |
40a914fa AD |
7629 | result = PCI_ERS_RESULT_DISCONNECT; |
7630 | } else { | |
7631 | pci_set_master(pdev); | |
7632 | pci_restore_state(pdev); | |
b94f2d77 | 7633 | pci_save_state(pdev); |
9d5c8243 | 7634 | |
40a914fa AD |
7635 | pci_enable_wake(pdev, PCI_D3hot, 0); |
7636 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
9d5c8243 | 7637 | |
40a914fa AD |
7638 | igb_reset(adapter); |
7639 | wr32(E1000_WUS, ~0); | |
7640 | result = PCI_ERS_RESULT_RECOVERED; | |
7641 | } | |
9d5c8243 | 7642 | |
ea943d41 JK |
7643 | err = pci_cleanup_aer_uncorrect_error_status(pdev); |
7644 | if (err) { | |
b980ac18 JK |
7645 | dev_err(&pdev->dev, |
7646 | "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n", | |
7647 | err); | |
ea943d41 JK |
7648 | /* non-fatal, continue */ |
7649 | } | |
40a914fa AD |
7650 | |
7651 | return result; | |
9d5c8243 AK |
7652 | } |
7653 | ||
7654 | /** | |
b980ac18 JK |
7655 | * igb_io_resume - called when traffic can start flowing again. |
7656 | * @pdev: Pointer to PCI device | |
9d5c8243 | 7657 | * |
b980ac18 JK |
7658 | * This callback is called when the error recovery driver tells us that |
7659 | * its OK to resume normal operation. Implementation resembles the | |
7660 | * second-half of the igb_resume routine. | |
9d5c8243 AK |
7661 | */ |
7662 | static void igb_io_resume(struct pci_dev *pdev) | |
7663 | { | |
7664 | struct net_device *netdev = pci_get_drvdata(pdev); | |
7665 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7666 | ||
9d5c8243 AK |
7667 | if (netif_running(netdev)) { |
7668 | if (igb_up(adapter)) { | |
7669 | dev_err(&pdev->dev, "igb_up failed after reset\n"); | |
7670 | return; | |
7671 | } | |
7672 | } | |
7673 | ||
7674 | netif_device_attach(netdev); | |
7675 | ||
7676 | /* let the f/w know that the h/w is now under the control of the | |
b980ac18 JK |
7677 | * driver. |
7678 | */ | |
9d5c8243 | 7679 | igb_get_hw_control(adapter); |
9d5c8243 AK |
7680 | } |
7681 | ||
26ad9178 | 7682 | static void igb_rar_set_qsel(struct igb_adapter *adapter, u8 *addr, u32 index, |
b980ac18 | 7683 | u8 qsel) |
26ad9178 AD |
7684 | { |
7685 | u32 rar_low, rar_high; | |
7686 | struct e1000_hw *hw = &adapter->hw; | |
7687 | ||
7688 | /* HW expects these in little endian so we reverse the byte order | |
7689 | * from network order (big endian) to little endian | |
7690 | */ | |
7691 | rar_low = ((u32) addr[0] | ((u32) addr[1] << 8) | | |
b980ac18 | 7692 | ((u32) addr[2] << 16) | ((u32) addr[3] << 24)); |
26ad9178 AD |
7693 | rar_high = ((u32) addr[4] | ((u32) addr[5] << 8)); |
7694 | ||
7695 | /* Indicate to hardware the Address is Valid. */ | |
7696 | rar_high |= E1000_RAH_AV; | |
7697 | ||
7698 | if (hw->mac.type == e1000_82575) | |
7699 | rar_high |= E1000_RAH_POOL_1 * qsel; | |
7700 | else | |
7701 | rar_high |= E1000_RAH_POOL_1 << qsel; | |
7702 | ||
7703 | wr32(E1000_RAL(index), rar_low); | |
7704 | wrfl(); | |
7705 | wr32(E1000_RAH(index), rar_high); | |
7706 | wrfl(); | |
7707 | } | |
7708 | ||
4ae196df | 7709 | static int igb_set_vf_mac(struct igb_adapter *adapter, |
b980ac18 | 7710 | int vf, unsigned char *mac_addr) |
4ae196df AD |
7711 | { |
7712 | struct e1000_hw *hw = &adapter->hw; | |
ff41f8dc | 7713 | /* VF MAC addresses start at end of receive addresses and moves |
b980ac18 JK |
7714 | * towards the first, as a result a collision should not be possible |
7715 | */ | |
ff41f8dc | 7716 | int rar_entry = hw->mac.rar_entry_count - (vf + 1); |
4ae196df | 7717 | |
37680117 | 7718 | memcpy(adapter->vf_data[vf].vf_mac_addresses, mac_addr, ETH_ALEN); |
4ae196df | 7719 | |
26ad9178 | 7720 | igb_rar_set_qsel(adapter, mac_addr, rar_entry, vf); |
4ae196df AD |
7721 | |
7722 | return 0; | |
7723 | } | |
7724 | ||
8151d294 WM |
7725 | static int igb_ndo_set_vf_mac(struct net_device *netdev, int vf, u8 *mac) |
7726 | { | |
7727 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7728 | if (!is_valid_ether_addr(mac) || (vf >= adapter->vfs_allocated_count)) | |
7729 | return -EINVAL; | |
7730 | adapter->vf_data[vf].flags |= IGB_VF_FLAG_PF_SET_MAC; | |
7731 | dev_info(&adapter->pdev->dev, "setting MAC %pM on VF %d\n", mac, vf); | |
b980ac18 JK |
7732 | dev_info(&adapter->pdev->dev, |
7733 | "Reload the VF driver to make this change effective."); | |
8151d294 | 7734 | if (test_bit(__IGB_DOWN, &adapter->state)) { |
b980ac18 JK |
7735 | dev_warn(&adapter->pdev->dev, |
7736 | "The VF MAC address has been set, but the PF device is not up.\n"); | |
7737 | dev_warn(&adapter->pdev->dev, | |
7738 | "Bring the PF device up before attempting to use the VF device.\n"); | |
8151d294 WM |
7739 | } |
7740 | return igb_set_vf_mac(adapter, vf, mac); | |
7741 | } | |
7742 | ||
17dc566c LL |
7743 | static int igb_link_mbps(int internal_link_speed) |
7744 | { | |
7745 | switch (internal_link_speed) { | |
7746 | case SPEED_100: | |
7747 | return 100; | |
7748 | case SPEED_1000: | |
7749 | return 1000; | |
7750 | default: | |
7751 | return 0; | |
7752 | } | |
7753 | } | |
7754 | ||
7755 | static void igb_set_vf_rate_limit(struct e1000_hw *hw, int vf, int tx_rate, | |
7756 | int link_speed) | |
7757 | { | |
7758 | int rf_dec, rf_int; | |
7759 | u32 bcnrc_val; | |
7760 | ||
7761 | if (tx_rate != 0) { | |
7762 | /* Calculate the rate factor values to set */ | |
7763 | rf_int = link_speed / tx_rate; | |
7764 | rf_dec = (link_speed - (rf_int * tx_rate)); | |
b980ac18 JK |
7765 | rf_dec = (rf_dec * (1 << E1000_RTTBCNRC_RF_INT_SHIFT)) / |
7766 | tx_rate; | |
17dc566c LL |
7767 | |
7768 | bcnrc_val = E1000_RTTBCNRC_RS_ENA; | |
b980ac18 JK |
7769 | bcnrc_val |= ((rf_int << E1000_RTTBCNRC_RF_INT_SHIFT) & |
7770 | E1000_RTTBCNRC_RF_INT_MASK); | |
17dc566c LL |
7771 | bcnrc_val |= (rf_dec & E1000_RTTBCNRC_RF_DEC_MASK); |
7772 | } else { | |
7773 | bcnrc_val = 0; | |
7774 | } | |
7775 | ||
7776 | wr32(E1000_RTTDQSEL, vf); /* vf X uses queue X */ | |
b980ac18 | 7777 | /* Set global transmit compensation time to the MMW_SIZE in RTTBCNRM |
f00b0da7 LL |
7778 | * register. MMW_SIZE=0x014 if 9728-byte jumbo is supported. |
7779 | */ | |
7780 | wr32(E1000_RTTBCNRM, 0x14); | |
17dc566c LL |
7781 | wr32(E1000_RTTBCNRC, bcnrc_val); |
7782 | } | |
7783 | ||
7784 | static void igb_check_vf_rate_limit(struct igb_adapter *adapter) | |
7785 | { | |
7786 | int actual_link_speed, i; | |
7787 | bool reset_rate = false; | |
7788 | ||
7789 | /* VF TX rate limit was not set or not supported */ | |
7790 | if ((adapter->vf_rate_link_speed == 0) || | |
7791 | (adapter->hw.mac.type != e1000_82576)) | |
7792 | return; | |
7793 | ||
7794 | actual_link_speed = igb_link_mbps(adapter->link_speed); | |
7795 | if (actual_link_speed != adapter->vf_rate_link_speed) { | |
7796 | reset_rate = true; | |
7797 | adapter->vf_rate_link_speed = 0; | |
7798 | dev_info(&adapter->pdev->dev, | |
b980ac18 | 7799 | "Link speed has been changed. VF Transmit rate is disabled\n"); |
17dc566c LL |
7800 | } |
7801 | ||
7802 | for (i = 0; i < adapter->vfs_allocated_count; i++) { | |
7803 | if (reset_rate) | |
7804 | adapter->vf_data[i].tx_rate = 0; | |
7805 | ||
7806 | igb_set_vf_rate_limit(&adapter->hw, i, | |
b980ac18 JK |
7807 | adapter->vf_data[i].tx_rate, |
7808 | actual_link_speed); | |
17dc566c LL |
7809 | } |
7810 | } | |
7811 | ||
ed616689 SC |
7812 | static int igb_ndo_set_vf_bw(struct net_device *netdev, int vf, |
7813 | int min_tx_rate, int max_tx_rate) | |
8151d294 | 7814 | { |
17dc566c LL |
7815 | struct igb_adapter *adapter = netdev_priv(netdev); |
7816 | struct e1000_hw *hw = &adapter->hw; | |
7817 | int actual_link_speed; | |
7818 | ||
7819 | if (hw->mac.type != e1000_82576) | |
7820 | return -EOPNOTSUPP; | |
7821 | ||
ed616689 SC |
7822 | if (min_tx_rate) |
7823 | return -EINVAL; | |
7824 | ||
17dc566c LL |
7825 | actual_link_speed = igb_link_mbps(adapter->link_speed); |
7826 | if ((vf >= adapter->vfs_allocated_count) || | |
7827 | (!(rd32(E1000_STATUS) & E1000_STATUS_LU)) || | |
ed616689 SC |
7828 | (max_tx_rate < 0) || |
7829 | (max_tx_rate > actual_link_speed)) | |
17dc566c LL |
7830 | return -EINVAL; |
7831 | ||
7832 | adapter->vf_rate_link_speed = actual_link_speed; | |
ed616689 SC |
7833 | adapter->vf_data[vf].tx_rate = (u16)max_tx_rate; |
7834 | igb_set_vf_rate_limit(hw, vf, max_tx_rate, actual_link_speed); | |
17dc566c LL |
7835 | |
7836 | return 0; | |
8151d294 WM |
7837 | } |
7838 | ||
70ea4783 LL |
7839 | static int igb_ndo_set_vf_spoofchk(struct net_device *netdev, int vf, |
7840 | bool setting) | |
7841 | { | |
7842 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7843 | struct e1000_hw *hw = &adapter->hw; | |
7844 | u32 reg_val, reg_offset; | |
7845 | ||
7846 | if (!adapter->vfs_allocated_count) | |
7847 | return -EOPNOTSUPP; | |
7848 | ||
7849 | if (vf >= adapter->vfs_allocated_count) | |
7850 | return -EINVAL; | |
7851 | ||
7852 | reg_offset = (hw->mac.type == e1000_82576) ? E1000_DTXSWC : E1000_TXSWC; | |
7853 | reg_val = rd32(reg_offset); | |
7854 | if (setting) | |
7855 | reg_val |= ((1 << vf) | | |
7856 | (1 << (vf + E1000_DTXSWC_VLAN_SPOOF_SHIFT))); | |
7857 | else | |
7858 | reg_val &= ~((1 << vf) | | |
7859 | (1 << (vf + E1000_DTXSWC_VLAN_SPOOF_SHIFT))); | |
7860 | wr32(reg_offset, reg_val); | |
7861 | ||
7862 | adapter->vf_data[vf].spoofchk_enabled = setting; | |
23d87824 | 7863 | return 0; |
70ea4783 LL |
7864 | } |
7865 | ||
8151d294 WM |
7866 | static int igb_ndo_get_vf_config(struct net_device *netdev, |
7867 | int vf, struct ifla_vf_info *ivi) | |
7868 | { | |
7869 | struct igb_adapter *adapter = netdev_priv(netdev); | |
7870 | if (vf >= adapter->vfs_allocated_count) | |
7871 | return -EINVAL; | |
7872 | ivi->vf = vf; | |
7873 | memcpy(&ivi->mac, adapter->vf_data[vf].vf_mac_addresses, ETH_ALEN); | |
ed616689 SC |
7874 | ivi->max_tx_rate = adapter->vf_data[vf].tx_rate; |
7875 | ivi->min_tx_rate = 0; | |
8151d294 WM |
7876 | ivi->vlan = adapter->vf_data[vf].pf_vlan; |
7877 | ivi->qos = adapter->vf_data[vf].pf_qos; | |
70ea4783 | 7878 | ivi->spoofchk = adapter->vf_data[vf].spoofchk_enabled; |
8151d294 WM |
7879 | return 0; |
7880 | } | |
7881 | ||
4ae196df AD |
7882 | static void igb_vmm_control(struct igb_adapter *adapter) |
7883 | { | |
7884 | struct e1000_hw *hw = &adapter->hw; | |
10d8e907 | 7885 | u32 reg; |
4ae196df | 7886 | |
52a1dd4d AD |
7887 | switch (hw->mac.type) { |
7888 | case e1000_82575: | |
f96a8a0b CW |
7889 | case e1000_i210: |
7890 | case e1000_i211: | |
ceb5f13b | 7891 | case e1000_i354: |
52a1dd4d AD |
7892 | default: |
7893 | /* replication is not supported for 82575 */ | |
4ae196df | 7894 | return; |
52a1dd4d AD |
7895 | case e1000_82576: |
7896 | /* notify HW that the MAC is adding vlan tags */ | |
7897 | reg = rd32(E1000_DTXCTL); | |
7898 | reg |= E1000_DTXCTL_VLAN_ADDED; | |
7899 | wr32(E1000_DTXCTL, reg); | |
b26141d4 | 7900 | /* Fall through */ |
52a1dd4d AD |
7901 | case e1000_82580: |
7902 | /* enable replication vlan tag stripping */ | |
7903 | reg = rd32(E1000_RPLOLR); | |
7904 | reg |= E1000_RPLOLR_STRVLAN; | |
7905 | wr32(E1000_RPLOLR, reg); | |
b26141d4 | 7906 | /* Fall through */ |
d2ba2ed8 AD |
7907 | case e1000_i350: |
7908 | /* none of the above registers are supported by i350 */ | |
52a1dd4d AD |
7909 | break; |
7910 | } | |
10d8e907 | 7911 | |
d4960307 AD |
7912 | if (adapter->vfs_allocated_count) { |
7913 | igb_vmdq_set_loopback_pf(hw, true); | |
7914 | igb_vmdq_set_replication_pf(hw, true); | |
13800469 | 7915 | igb_vmdq_set_anti_spoofing_pf(hw, true, |
b980ac18 | 7916 | adapter->vfs_allocated_count); |
d4960307 AD |
7917 | } else { |
7918 | igb_vmdq_set_loopback_pf(hw, false); | |
7919 | igb_vmdq_set_replication_pf(hw, false); | |
7920 | } | |
4ae196df AD |
7921 | } |
7922 | ||
b6e0c419 CW |
7923 | static void igb_init_dmac(struct igb_adapter *adapter, u32 pba) |
7924 | { | |
7925 | struct e1000_hw *hw = &adapter->hw; | |
7926 | u32 dmac_thr; | |
7927 | u16 hwm; | |
7928 | ||
7929 | if (hw->mac.type > e1000_82580) { | |
7930 | if (adapter->flags & IGB_FLAG_DMAC) { | |
7931 | u32 reg; | |
7932 | ||
7933 | /* force threshold to 0. */ | |
7934 | wr32(E1000_DMCTXTH, 0); | |
7935 | ||
b980ac18 | 7936 | /* DMA Coalescing high water mark needs to be greater |
e8c626e9 MV |
7937 | * than the Rx threshold. Set hwm to PBA - max frame |
7938 | * size in 16B units, capping it at PBA - 6KB. | |
b6e0c419 | 7939 | */ |
e8c626e9 MV |
7940 | hwm = 64 * pba - adapter->max_frame_size / 16; |
7941 | if (hwm < 64 * (pba - 6)) | |
7942 | hwm = 64 * (pba - 6); | |
7943 | reg = rd32(E1000_FCRTC); | |
7944 | reg &= ~E1000_FCRTC_RTH_COAL_MASK; | |
7945 | reg |= ((hwm << E1000_FCRTC_RTH_COAL_SHIFT) | |
7946 | & E1000_FCRTC_RTH_COAL_MASK); | |
7947 | wr32(E1000_FCRTC, reg); | |
7948 | ||
b980ac18 | 7949 | /* Set the DMA Coalescing Rx threshold to PBA - 2 * max |
e8c626e9 MV |
7950 | * frame size, capping it at PBA - 10KB. |
7951 | */ | |
7952 | dmac_thr = pba - adapter->max_frame_size / 512; | |
7953 | if (dmac_thr < pba - 10) | |
7954 | dmac_thr = pba - 10; | |
b6e0c419 CW |
7955 | reg = rd32(E1000_DMACR); |
7956 | reg &= ~E1000_DMACR_DMACTHR_MASK; | |
b6e0c419 CW |
7957 | reg |= ((dmac_thr << E1000_DMACR_DMACTHR_SHIFT) |
7958 | & E1000_DMACR_DMACTHR_MASK); | |
7959 | ||
7960 | /* transition to L0x or L1 if available..*/ | |
7961 | reg |= (E1000_DMACR_DMAC_EN | E1000_DMACR_DMAC_LX_MASK); | |
7962 | ||
7963 | /* watchdog timer= +-1000 usec in 32usec intervals */ | |
7964 | reg |= (1000 >> 5); | |
0c02dd98 MV |
7965 | |
7966 | /* Disable BMC-to-OS Watchdog Enable */ | |
ceb5f13b CW |
7967 | if (hw->mac.type != e1000_i354) |
7968 | reg &= ~E1000_DMACR_DC_BMC2OSW_EN; | |
7969 | ||
b6e0c419 CW |
7970 | wr32(E1000_DMACR, reg); |
7971 | ||
b980ac18 | 7972 | /* no lower threshold to disable |
b6e0c419 CW |
7973 | * coalescing(smart fifb)-UTRESH=0 |
7974 | */ | |
7975 | wr32(E1000_DMCRTRH, 0); | |
b6e0c419 CW |
7976 | |
7977 | reg = (IGB_DMCTLX_DCFLUSH_DIS | 0x4); | |
7978 | ||
7979 | wr32(E1000_DMCTLX, reg); | |
7980 | ||
b980ac18 | 7981 | /* free space in tx packet buffer to wake from |
b6e0c419 CW |
7982 | * DMA coal |
7983 | */ | |
7984 | wr32(E1000_DMCTXTH, (IGB_MIN_TXPBSIZE - | |
7985 | (IGB_TX_BUF_4096 + adapter->max_frame_size)) >> 6); | |
7986 | ||
b980ac18 | 7987 | /* make low power state decision controlled |
b6e0c419 CW |
7988 | * by DMA coal |
7989 | */ | |
7990 | reg = rd32(E1000_PCIEMISC); | |
7991 | reg &= ~E1000_PCIEMISC_LX_DECISION; | |
7992 | wr32(E1000_PCIEMISC, reg); | |
7993 | } /* endif adapter->dmac is not disabled */ | |
7994 | } else if (hw->mac.type == e1000_82580) { | |
7995 | u32 reg = rd32(E1000_PCIEMISC); | |
9005df38 | 7996 | |
b6e0c419 CW |
7997 | wr32(E1000_PCIEMISC, reg & ~E1000_PCIEMISC_LX_DECISION); |
7998 | wr32(E1000_DMACR, 0); | |
7999 | } | |
8000 | } | |
8001 | ||
b980ac18 JK |
8002 | /** |
8003 | * igb_read_i2c_byte - Reads 8 bit word over I2C | |
441fc6fd CW |
8004 | * @hw: pointer to hardware structure |
8005 | * @byte_offset: byte offset to read | |
8006 | * @dev_addr: device address | |
8007 | * @data: value read | |
8008 | * | |
8009 | * Performs byte read operation over I2C interface at | |
8010 | * a specified device address. | |
b980ac18 | 8011 | **/ |
441fc6fd | 8012 | s32 igb_read_i2c_byte(struct e1000_hw *hw, u8 byte_offset, |
b980ac18 | 8013 | u8 dev_addr, u8 *data) |
441fc6fd CW |
8014 | { |
8015 | struct igb_adapter *adapter = container_of(hw, struct igb_adapter, hw); | |
603e86fa | 8016 | struct i2c_client *this_client = adapter->i2c_client; |
441fc6fd CW |
8017 | s32 status; |
8018 | u16 swfw_mask = 0; | |
8019 | ||
8020 | if (!this_client) | |
8021 | return E1000_ERR_I2C; | |
8022 | ||
8023 | swfw_mask = E1000_SWFW_PHY0_SM; | |
8024 | ||
23d87824 | 8025 | if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask)) |
441fc6fd CW |
8026 | return E1000_ERR_SWFW_SYNC; |
8027 | ||
8028 | status = i2c_smbus_read_byte_data(this_client, byte_offset); | |
8029 | hw->mac.ops.release_swfw_sync(hw, swfw_mask); | |
8030 | ||
8031 | if (status < 0) | |
8032 | return E1000_ERR_I2C; | |
8033 | else { | |
8034 | *data = status; | |
23d87824 | 8035 | return 0; |
441fc6fd CW |
8036 | } |
8037 | } | |
8038 | ||
b980ac18 JK |
8039 | /** |
8040 | * igb_write_i2c_byte - Writes 8 bit word over I2C | |
441fc6fd CW |
8041 | * @hw: pointer to hardware structure |
8042 | * @byte_offset: byte offset to write | |
8043 | * @dev_addr: device address | |
8044 | * @data: value to write | |
8045 | * | |
8046 | * Performs byte write operation over I2C interface at | |
8047 | * a specified device address. | |
b980ac18 | 8048 | **/ |
441fc6fd | 8049 | s32 igb_write_i2c_byte(struct e1000_hw *hw, u8 byte_offset, |
b980ac18 | 8050 | u8 dev_addr, u8 data) |
441fc6fd CW |
8051 | { |
8052 | struct igb_adapter *adapter = container_of(hw, struct igb_adapter, hw); | |
603e86fa | 8053 | struct i2c_client *this_client = adapter->i2c_client; |
441fc6fd CW |
8054 | s32 status; |
8055 | u16 swfw_mask = E1000_SWFW_PHY0_SM; | |
8056 | ||
8057 | if (!this_client) | |
8058 | return E1000_ERR_I2C; | |
8059 | ||
23d87824 | 8060 | if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask)) |
441fc6fd CW |
8061 | return E1000_ERR_SWFW_SYNC; |
8062 | status = i2c_smbus_write_byte_data(this_client, byte_offset, data); | |
8063 | hw->mac.ops.release_swfw_sync(hw, swfw_mask); | |
8064 | ||
8065 | if (status) | |
8066 | return E1000_ERR_I2C; | |
8067 | else | |
23d87824 | 8068 | return 0; |
441fc6fd CW |
8069 | |
8070 | } | |
907b7835 LMV |
8071 | |
8072 | int igb_reinit_queues(struct igb_adapter *adapter) | |
8073 | { | |
8074 | struct net_device *netdev = adapter->netdev; | |
8075 | struct pci_dev *pdev = adapter->pdev; | |
8076 | int err = 0; | |
8077 | ||
8078 | if (netif_running(netdev)) | |
8079 | igb_close(netdev); | |
8080 | ||
02ef6e1d | 8081 | igb_reset_interrupt_capability(adapter); |
907b7835 LMV |
8082 | |
8083 | if (igb_init_interrupt_scheme(adapter, true)) { | |
8084 | dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); | |
8085 | return -ENOMEM; | |
8086 | } | |
8087 | ||
8088 | if (netif_running(netdev)) | |
8089 | err = igb_open(netdev); | |
8090 | ||
8091 | return err; | |
8092 | } | |
9d5c8243 | 8093 | /* igb_main.c */ |