1 /*******************************************************************************
3 * Intel Ethernet Controller XL710 Family Linux Driver
4 * Copyright(c) 2013 - 2014 Intel Corporation.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * You should have received a copy of the GNU General Public License along
16 * with this program. If not, see <http://www.gnu.org/licenses/>.
18 * The full GNU General Public License is included in this distribution in
19 * the file called "COPYING".
21 * Contact Information:
22 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25 ******************************************************************************/
32 #include <linux/types.h>
33 #include <linux/errno.h>
34 #include <linux/module.h>
35 #include <linux/pci.h>
36 #include <linux/aer.h>
37 #include <linux/netdevice.h>
38 #include <linux/ioport.h>
39 #include <linux/slab.h>
40 #include <linux/list.h>
41 #include <linux/string.h>
44 #include <linux/tcp.h>
45 #include <linux/sctp.h>
46 #include <linux/pkt_sched.h>
47 #include <linux/ipv6.h>
48 #include <net/checksum.h>
49 #include <net/ip6_checksum.h>
50 #include <linux/ethtool.h>
51 #include <linux/if_vlan.h>
52 #include <linux/clocksource.h>
53 #include <linux/net_tstamp.h>
54 #include <linux/ptp_clock_kernel.h>
55 #include "i40e_type.h"
56 #include "i40e_prototype.h"
57 #include "i40e_virtchnl.h"
58 #include "i40e_virtchnl_pf.h"
59 #include "i40e_txrx.h"
61 /* Useful i40e defaults */
62 #define I40E_BASE_PF_SEID 16
63 #define I40E_BASE_VSI_SEID 512
64 #define I40E_BASE_VEB_SEID 288
65 #define I40E_MAX_VEB 16
66 #define I40E_MAX_NPAR_QPS 32
68 #define I40E_MAX_NUM_DESCRIPTORS 4096
69 #define I40E_MAX_REGISTER 0x800000
70 #define I40E_DEFAULT_NUM_DESCRIPTORS 512
71 #define I40E_REQ_DESCRIPTOR_MULTIPLE 32
72 #define I40E_MIN_NUM_DESCRIPTORS 64
73 #define I40E_MIN_MSIX 2
74 #define I40E_DEFAULT_NUM_VMDQ_VSI 8 /* max 256 VSIs */
75 #define I40E_DEFAULT_QUEUES_PER_VMDQ 2 /* max 16 qps */
76 #define I40E_DEFAULT_QUEUES_PER_VF 4
77 #define I40E_DEFAULT_QUEUES_PER_TC 1 /* should be a power of 2 */
78 #define I40E_FDIR_RING 0
79 #define I40E_FDIR_RING_COUNT 32
80 #define I40E_MAX_AQ_BUF_SIZE 4096
81 #define I40E_AQ_LEN 32
82 #define I40E_AQ_WORK_LIMIT 16
83 #define I40E_MAX_USER_PRIORITY 8
84 #define I40E_DEFAULT_MSG_ENABLE 4
86 #define I40E_NVM_VERSION_LO_SHIFT 0
87 #define I40E_NVM_VERSION_LO_MASK (0xff << I40E_NVM_VERSION_LO_SHIFT)
88 #define I40E_NVM_VERSION_HI_SHIFT 8
89 #define I40E_NVM_VERSION_HI_MASK (0xff << I40E_NVM_VERSION_HI_SHIFT)
91 /* The values in here are decimal coded as hex as is the case in the NVM map*/
92 #define I40E_CURRENT_NVM_VERSION_HI 0x2
93 #define I40E_CURRENT_NVM_VERSION_LO 0x30
95 /* magic for getting defines into strings */
96 #define STRINGIFY(foo) #foo
97 #define XSTRINGIFY(bar) STRINGIFY(bar)
99 #ifndef ARCH_HAS_PREFETCH
103 #define I40E_RX_DESC(R, i) \
104 ((ring_is_16byte_desc_enabled(R)) \
105 ? (union i40e_32byte_rx_desc *) \
106 (&(((union i40e_16byte_rx_desc *)((R)->desc))[i])) \
107 : (&(((union i40e_32byte_rx_desc *)((R)->desc))[i])))
108 #define I40E_TX_DESC(R, i) \
109 (&(((struct i40e_tx_desc *)((R)->desc))[i]))
110 #define I40E_TX_CTXTDESC(R, i) \
111 (&(((struct i40e_tx_context_desc *)((R)->desc))[i]))
112 #define I40E_TX_FDIRDESC(R, i) \
113 (&(((struct i40e_filter_program_desc *)((R)->desc))[i]))
115 /* default to trying for four seconds */
116 #define I40E_TRY_LINK_TIMEOUT (4 * HZ)
118 /* driver state flags */
124 __I40E_NEEDS_RESTART,
125 __I40E_SERVICE_SCHED,
126 __I40E_ADMINQ_EVENT_PENDING,
127 __I40E_MDD_EVENT_PENDING,
128 __I40E_VFLR_EVENT_PENDING,
129 __I40E_RESET_RECOVERY_PENDING,
130 __I40E_RESET_INTR_RECEIVED,
131 __I40E_REINIT_REQUESTED,
132 __I40E_PF_RESET_REQUESTED,
133 __I40E_CORE_RESET_REQUESTED,
134 __I40E_GLOBAL_RESET_REQUESTED,
135 __I40E_EMP_RESET_REQUESTED,
136 __I40E_FILTER_OVERFLOW_PROMISC,
140 enum i40e_interrupt_policy {
141 I40E_INTERRUPT_BEST_CASE,
142 I40E_INTERRUPT_MEDIUM,
143 I40E_INTERRUPT_LOWEST
146 struct i40e_lump_tracking {
150 #define I40E_PILE_VALID_BIT 0x8000
153 #define I40E_DEFAULT_ATR_SAMPLE_RATE 20
154 #define I40E_FDIR_MAX_RAW_PACKET_LOOKUP 512
155 struct i40e_fdir_data {
167 #define I40E_DCB_PRIO_TYPE_STRICT 0
168 #define I40E_DCB_PRIO_TYPE_ETS 1
169 #define I40E_DCB_STRICT_PRIO_CREDITS 127
170 #define I40E_MAX_USER_PRIORITY 8
171 /* DCB per TC information data structure */
172 struct i40e_tc_info {
173 u16 qoffset; /* Queue offset from base queue */
174 u16 qcount; /* Total Queues */
175 u8 netdev_tc; /* Netdev TC index if netdev associated */
178 /* TC configuration data structure */
179 struct i40e_tc_configuration {
180 u8 numtc; /* Total number of enabled TCs */
181 u8 enabled_tc; /* TC map */
182 struct i40e_tc_info tc_info[I40E_MAX_TRAFFIC_CLASS];
185 /* struct that defines the Ethernet device */
187 struct pci_dev *pdev;
190 unsigned long link_check_timeout;
191 struct msix_entry *msix_entries;
192 u16 num_msix_entries;
193 bool fc_autoneg_status;
196 u16 num_vmdq_vsis; /* num vmdq pools this pf has set up */
197 u16 num_vmdq_qps; /* num queue pairs per vmdq pool */
198 u16 num_vmdq_msix; /* num queue vectors per vmdq pool */
199 u16 num_req_vfs; /* num vfs requested for this vf */
200 u16 num_vf_qps; /* num queue pairs per vf */
201 u16 num_tc_qps; /* num queue pairs per TC */
202 u16 num_lan_qps; /* num lan queues this pf has set up */
203 u16 num_lan_msix; /* num queue vectors for the base pf vsi */
204 int queues_left; /* queues left unclaimed */
205 u16 rss_size; /* num queues in the RSS array */
206 u16 rss_size_max; /* HW defined max RSS queues */
207 u16 fdir_pf_filter_count; /* num of guaranteed filters for this PF */
211 #ifdef CONFIG_I40E_VXLAN
212 __be16 vxlan_ports[I40E_MAX_PF_UDP_OFFLOAD_PORTS];
213 u16 pending_vxlan_bitmap;
216 enum i40e_interrupt_policy int_policy;
220 char misc_int_name[IFNAMSIZ + 9];
221 u16 adminq_work_limit; /* num of admin receive queue desc to process */
222 int service_timer_period;
223 struct timer_list service_timer;
224 struct work_struct service_task;
227 #define I40E_FLAG_RX_CSUM_ENABLED (u64)(1 << 1)
228 #define I40E_FLAG_MSI_ENABLED (u64)(1 << 2)
229 #define I40E_FLAG_MSIX_ENABLED (u64)(1 << 3)
230 #define I40E_FLAG_RX_1BUF_ENABLED (u64)(1 << 4)
231 #define I40E_FLAG_RX_PS_ENABLED (u64)(1 << 5)
232 #define I40E_FLAG_RSS_ENABLED (u64)(1 << 6)
233 #define I40E_FLAG_VMDQ_ENABLED (u64)(1 << 7)
234 #define I40E_FLAG_FDIR_REQUIRES_REINIT (u64)(1 << 8)
235 #define I40E_FLAG_NEED_LINK_UPDATE (u64)(1 << 9)
236 #define I40E_FLAG_IN_NETPOLL (u64)(1 << 12)
237 #define I40E_FLAG_16BYTE_RX_DESC_ENABLED (u64)(1 << 13)
238 #define I40E_FLAG_CLEAN_ADMINQ (u64)(1 << 14)
239 #define I40E_FLAG_FILTER_SYNC (u64)(1 << 15)
240 #define I40E_FLAG_PROCESS_MDD_EVENT (u64)(1 << 17)
241 #define I40E_FLAG_PROCESS_VFLR_EVENT (u64)(1 << 18)
242 #define I40E_FLAG_SRIOV_ENABLED (u64)(1 << 19)
243 #define I40E_FLAG_DCB_ENABLED (u64)(1 << 20)
244 #define I40E_FLAG_FDIR_ENABLED (u64)(1 << 21)
245 #define I40E_FLAG_FDIR_ATR_ENABLED (u64)(1 << 22)
246 #define I40E_FLAG_PTP (u64)(1 << 25)
247 #define I40E_FLAG_MFP_ENABLED (u64)(1 << 26)
248 #ifdef CONFIG_I40E_VXLAN
249 #define I40E_FLAG_VXLAN_FILTER_SYNC (u64)(1 << 27)
252 bool stat_offsets_loaded;
253 struct i40e_hw_port_stats stats;
254 struct i40e_hw_port_stats stats_offsets;
255 u32 tx_timeout_count;
256 u32 tx_timeout_recovery_level;
257 unsigned long tx_timeout_last_recovery;
258 u32 hw_csum_rx_error;
260 u16 corer_count; /* Core reset count */
261 u16 globr_count; /* Global reset count */
262 u16 empr_count; /* EMP reset count */
263 u16 pfr_count; /* PF reset count */
264 u16 sw_int_count; /* SW interrupt count */
266 struct mutex switch_mutex;
267 u16 lan_vsi; /* our default LAN VSI */
268 u16 lan_veb; /* initial relay, if exists */
269 #define I40E_NO_VEB 0xffff
270 #define I40E_NO_VSI 0xffff
271 u16 next_vsi; /* Next unallocated VSI - 0-based! */
272 struct i40e_vsi **vsi;
273 struct i40e_veb *veb[I40E_MAX_VEB];
275 struct i40e_lump_tracking *qp_pile;
276 struct i40e_lump_tracking *irq_pile;
278 /* switch config info */
282 struct i40e_aqc_get_switch_config_data *sw_config;
283 struct kobject *switch_kobj;
284 #ifdef CONFIG_DEBUG_FS
285 struct dentry *i40e_dbg_pf;
286 #endif /* CONFIG_DEBUG_FS */
288 u16 instance; /* A unique number per i40e_pf instance in the system */
290 /* sr-iov config info */
292 int num_alloc_vfs; /* actual number of VFs allocated */
295 /* DCBx/DCBNL capability for PF that indicates
296 * whether DCBx is managed by firmware or host
297 * based agent (LLDPAD). Also, indicates what
298 * flavor of DCBx protocol (IEEE/CEE) is supported
299 * by the device. For now we're supporting IEEE
304 u32 fcoe_hmc_filt_num;
305 u32 fcoe_hmc_cntx_num;
306 struct i40e_filter_control_settings filter_settings;
308 struct ptp_clock *ptp_clock;
309 struct ptp_clock_info ptp_caps;
310 struct sk_buff *ptp_tx_skb;
311 struct work_struct ptp_tx_work;
312 struct hwtstamp_config tstamp_config;
313 unsigned long ptp_tx_start;
314 unsigned long last_rx_ptp_check;
315 spinlock_t tmreg_lock; /* Used to protect the device time registers. */
317 u32 tx_hwtstamp_timeouts;
318 u32 rx_hwtstamp_cleared;
323 struct i40e_mac_filter {
324 struct list_head list;
325 u8 macaddr[ETH_ALEN];
326 #define I40E_VLAN_ANY -1
328 u8 counter; /* number of instances of this filter */
329 bool is_vf; /* filter belongs to a VF */
330 bool is_netdev; /* filter belongs to a netdev */
331 bool changed; /* filter needs to be sync'd to the HW */
337 u16 veb_idx; /* index of VEB parent */
340 u16 stats_idx; /* index of VEB parent */
346 u8 bw_tc_share_credits[I40E_MAX_TRAFFIC_CLASS];
347 u16 bw_tc_limit_credits[I40E_MAX_TRAFFIC_CLASS];
348 u8 bw_tc_max_quanta[I40E_MAX_TRAFFIC_CLASS];
349 struct kobject *kobj;
350 bool stat_offsets_loaded;
351 struct i40e_eth_stats stats;
352 struct i40e_eth_stats stats_offsets;
355 /* struct that defines a VSI, associated with a dev */
357 struct net_device *netdev;
358 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
359 bool netdev_registered;
360 bool stat_offsets_loaded;
362 u32 current_netdev_flags;
364 #define I40E_VSI_FLAG_FILTER_CHANGED (1<<0)
365 #define I40E_VSI_FLAG_VEB_OWNER (1<<1)
368 struct list_head mac_filter_list;
371 struct rtnl_link_stats64 net_stats;
372 struct rtnl_link_stats64 net_stats_offsets;
373 struct i40e_eth_stats eth_stats;
374 struct i40e_eth_stats eth_stats_offsets;
380 /* These are containers of ring pointers, allocated at run-time */
381 struct i40e_ring **rx_rings;
382 struct i40e_ring **tx_rings;
385 /* high bit set means dynamic, use accessor routines to read/write.
386 * hardware only supports 2us resolution for the ITR registers.
387 * these values always store the USER setting, and must be converted
388 * before programming to a register.
398 /* List of q_vectors allocated to this VSI */
399 struct i40e_q_vector **q_vectors;
403 u16 seid; /* HW index of this VSI (absolute index) */
404 u16 id; /* VSI number */
407 u16 base_queue; /* vsi's first queue in hw array */
408 u16 alloc_queue_pairs; /* Allocated Tx/Rx queues */
409 u16 num_queue_pairs; /* Used tx and rx pairs */
411 enum i40e_vsi_type type; /* VSI type, e.g., LAN, FCoE, etc */
412 u16 vf_id; /* Virtual function ID for SRIOV VSIs */
414 struct i40e_tc_configuration tc_config;
415 struct i40e_aqc_vsi_properties_data info;
417 /* VSI BW limit (absolute across all TCs) */
418 u16 bw_limit; /* VSI BW Limit (0 = disabled) */
419 u8 bw_max_quanta; /* Max Quanta when BW limit is enabled */
421 /* Relative TC credits across VSIs */
422 u8 bw_ets_share_credits[I40E_MAX_TRAFFIC_CLASS];
423 /* TC BW limit credits within VSI */
424 u16 bw_ets_limit_credits[I40E_MAX_TRAFFIC_CLASS];
425 /* TC BW limit max quanta within VSI */
426 u8 bw_ets_max_quanta[I40E_MAX_TRAFFIC_CLASS];
428 struct i40e_pf *back; /* Backreference to associated PF */
429 u16 idx; /* index in pf->vsi[] */
430 u16 veb_idx; /* index of VEB parent */
431 struct kobject *kobj; /* sysfs object */
433 /* VSI specific handlers */
434 irqreturn_t (*irq_handler)(int irq, void *data);
435 } ____cacheline_internodealigned_in_smp;
437 struct i40e_netdev_priv {
438 struct i40e_vsi *vsi;
441 /* struct that defines an interrupt vector */
442 struct i40e_q_vector {
443 struct i40e_vsi *vsi;
445 u16 v_idx; /* index in the vsi->q_vector array. */
446 u16 reg_idx; /* register index of the interrupt */
448 struct napi_struct napi;
450 struct i40e_ring_container rx;
451 struct i40e_ring_container tx;
453 u8 num_ringpairs; /* total number of ring pairs in vector */
455 cpumask_t affinity_mask;
456 struct rcu_head rcu; /* to avoid race with update stats on free */
457 char name[IFNAMSIZ + 9];
458 } ____cacheline_internodealigned_in_smp;
462 struct list_head list;
467 * i40e_fw_version_str - format the FW and NVM version strings
468 * @hw: ptr to the hardware info
470 static inline char *i40e_fw_version_str(struct i40e_hw *hw)
474 snprintf(buf, sizeof(buf),
475 "f%d.%d a%d.%d n%02x.%02x e%08x",
476 hw->aq.fw_maj_ver, hw->aq.fw_min_ver,
477 hw->aq.api_maj_ver, hw->aq.api_min_ver,
478 (hw->nvm.version & I40E_NVM_VERSION_HI_MASK)
479 >> I40E_NVM_VERSION_HI_SHIFT,
480 (hw->nvm.version & I40E_NVM_VERSION_LO_MASK)
481 >> I40E_NVM_VERSION_LO_SHIFT,
488 * i40e_netdev_to_pf: Retrieve the PF struct for given netdev
489 * @netdev: the corresponding netdev
491 * Return the PF struct for the given netdev
493 static inline struct i40e_pf *i40e_netdev_to_pf(struct net_device *netdev)
495 struct i40e_netdev_priv *np = netdev_priv(netdev);
496 struct i40e_vsi *vsi = np->vsi;
501 static inline void i40e_vsi_setup_irqhandler(struct i40e_vsi *vsi,
502 irqreturn_t (*irq_handler)(int, void *))
504 vsi->irq_handler = irq_handler;
508 * i40e_rx_is_programming_status - check for programming status descriptor
509 * @qw: the first quad word of the program status descriptor
511 * The value of in the descriptor length field indicate if this
512 * is a programming status descriptor for flow director or FCoE
513 * by the value of I40E_RX_PROG_STATUS_DESC_LENGTH, otherwise
514 * it is a packet descriptor.
516 static inline bool i40e_rx_is_programming_status(u64 qw)
518 return I40E_RX_PROG_STATUS_DESC_LENGTH ==
519 (qw >> I40E_RX_PROG_STATUS_DESC_LENGTH_SHIFT);
522 /* needed by i40e_ethtool.c */
523 int i40e_up(struct i40e_vsi *vsi);
524 void i40e_down(struct i40e_vsi *vsi);
525 extern const char i40e_driver_name[];
526 extern const char i40e_driver_version_str[];
527 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags);
528 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags);
529 void i40e_update_stats(struct i40e_vsi *vsi);
530 void i40e_update_eth_stats(struct i40e_vsi *vsi);
531 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi);
532 int i40e_fetch_switch_configuration(struct i40e_pf *pf,
535 int i40e_program_fdir_filter(struct i40e_fdir_data *fdir_data,
536 struct i40e_pf *pf, bool add);
538 void i40e_set_ethtool_ops(struct net_device *netdev);
539 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
540 u8 *macaddr, s16 vlan,
541 bool is_vf, bool is_netdev);
542 void i40e_del_filter(struct i40e_vsi *vsi, u8 *macaddr, s16 vlan,
543 bool is_vf, bool is_netdev);
544 int i40e_sync_vsi_filters(struct i40e_vsi *vsi);
545 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
546 u16 uplink, u32 param1);
547 int i40e_vsi_release(struct i40e_vsi *vsi);
548 struct i40e_vsi *i40e_vsi_lookup(struct i40e_pf *pf, enum i40e_vsi_type type,
549 struct i40e_vsi *start_vsi);
550 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool enable);
551 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count);
552 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags, u16 uplink_seid,
553 u16 downlink_seid, u8 enabled_tc);
554 void i40e_veb_release(struct i40e_veb *veb);
556 i40e_status i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid);
557 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi);
558 void i40e_vsi_reset_stats(struct i40e_vsi *vsi);
559 void i40e_pf_reset_stats(struct i40e_pf *pf);
560 #ifdef CONFIG_DEBUG_FS
561 void i40e_dbg_pf_init(struct i40e_pf *pf);
562 void i40e_dbg_pf_exit(struct i40e_pf *pf);
563 void i40e_dbg_init(void);
564 void i40e_dbg_exit(void);
566 static inline void i40e_dbg_pf_init(struct i40e_pf *pf) {}
567 static inline void i40e_dbg_pf_exit(struct i40e_pf *pf) {}
568 static inline void i40e_dbg_init(void) {}
569 static inline void i40e_dbg_exit(void) {}
570 #endif /* CONFIG_DEBUG_FS*/
571 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector);
572 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf);
573 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf);
574 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
575 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi);
576 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid);
577 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid);
578 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
579 bool is_vf, bool is_netdev);
580 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi);
581 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
582 bool is_vf, bool is_netdev);
583 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi);
585 void i40e_ptp_rx_hang(struct i40e_vsi *vsi);
586 void i40e_ptp_tx_hwtstamp(struct i40e_pf *pf);
587 void i40e_ptp_rx_hwtstamp(struct i40e_pf *pf, struct sk_buff *skb, u8 index);
588 void i40e_ptp_set_increment(struct i40e_pf *pf);
589 int i40e_ptp_set_ts_config(struct i40e_pf *pf, struct ifreq *ifr);
590 int i40e_ptp_get_ts_config(struct i40e_pf *pf, struct ifreq *ifr);
591 void i40e_ptp_init(struct i40e_pf *pf);
592 void i40e_ptp_stop(struct i40e_pf *pf);
593 #endif /* _I40E_H_ */