1 /*******************************************************************************
3 * Intel Ethernet Controller XL710 Family Linux Driver
4 * Copyright(c) 2013 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 with
16 * this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 * The full GNU General Public License is included in this distribution in
20 * the file called "COPYING".
22 * Contact Information:
23 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26 ******************************************************************************/
32 #include <linux/init.h>
33 #include <linux/types.h>
34 #include <linux/errno.h>
35 #include <linux/module.h>
36 #include <linux/pci.h>
37 #include <linux/aer.h>
38 #include <linux/netdevice.h>
39 #include <linux/ioport.h>
40 #include <linux/slab.h>
41 #include <linux/list.h>
42 #include <linux/string.h>
45 #include <linux/tcp.h>
46 #include <linux/sctp.h>
47 #include <linux/pkt_sched.h>
48 #include <linux/ipv6.h>
49 #include <net/checksum.h>
50 #include <net/ip6_checksum.h>
51 #include <linux/ethtool.h>
52 #include <linux/if_vlan.h>
53 #include "i40e_type.h"
54 #include "i40e_prototype.h"
55 #include "i40e_virtchnl.h"
56 #include "i40e_virtchnl_pf.h"
57 #include "i40e_txrx.h"
59 /* Useful i40e defaults */
60 #define I40E_BASE_PF_SEID 16
61 #define I40E_BASE_VSI_SEID 512
62 #define I40E_BASE_VEB_SEID 288
63 #define I40E_MAX_VEB 16
64 #define I40E_MAX_NPAR_QPS 32
66 #define I40E_MAX_NUM_DESCRIPTORS 4096
67 #define I40E_MAX_REGISTER 0x0038FFFF
68 #define I40E_DEFAULT_NUM_DESCRIPTORS 512
69 #define I40E_REQ_DESCRIPTOR_MULTIPLE 32
70 #define I40E_MIN_NUM_DESCRIPTORS 64
71 #define I40E_MIN_MSIX 2
72 #define I40E_DEFAULT_NUM_VMDQ_VSI 8 /* max 256 VSIs */
73 #define I40E_DEFAULT_QUEUES_PER_VMDQ 2 /* max 16 qps */
74 #define I40E_DEFAULT_QUEUES_PER_VF 4
75 #define I40E_DEFAULT_QUEUES_PER_TC 1 /* should be a power of 2 */
76 #define I40E_FDIR_RING 0
77 #define I40E_FDIR_RING_COUNT 32
78 #define I40E_MAX_AQ_BUF_SIZE 4096
79 #define I40E_AQ_LEN 32
80 #define I40E_AQ_WORK_LIMIT 16
81 #define I40E_MAX_USER_PRIORITY 8
82 #define I40E_DEFAULT_MSG_ENABLE 4
84 #define I40E_NVM_VERSION_LO_SHIFT 0
85 #define I40E_NVM_VERSION_LO_MASK (0xff << I40E_NVM_VERSION_LO_SHIFT)
86 #define I40E_NVM_VERSION_HI_SHIFT 8
87 #define I40E_NVM_VERSION_HI_MASK (0xff << I40E_NVM_VERSION_HI_SHIFT)
89 /* The values in here are decimal coded as hex as is the case in the NVM map*/
90 #define I40E_CURRENT_NVM_VERSION_HI 0x2
91 #define I40E_CURRENT_NVM_VERSION_LO 0x1
94 /* magic for getting defines into strings */
95 #define STRINGIFY(foo) #foo
96 #define XSTRINGIFY(bar) STRINGIFY(bar)
98 #ifndef ARCH_HAS_PREFETCH
102 #define I40E_RX_DESC(R, i) \
103 ((ring_is_16byte_desc_enabled(R)) \
104 ? (union i40e_32byte_rx_desc *) \
105 (&(((union i40e_16byte_rx_desc *)((R)->desc))[i])) \
106 : (&(((union i40e_32byte_rx_desc *)((R)->desc))[i])))
107 #define I40E_TX_DESC(R, i) \
108 (&(((struct i40e_tx_desc *)((R)->desc))[i]))
109 #define I40E_TX_CTXTDESC(R, i) \
110 (&(((struct i40e_tx_context_desc *)((R)->desc))[i]))
111 #define I40E_TX_FDIRDESC(R, i) \
112 (&(((struct i40e_filter_program_desc *)((R)->desc))[i]))
114 /* default to trying for four seconds */
115 #define I40E_TRY_LINK_TIMEOUT (4 * HZ)
117 /* driver state flags */
123 __I40E_NEEDS_RESTART,
124 __I40E_SERVICE_SCHED,
125 __I40E_ADMINQ_EVENT_PENDING,
126 __I40E_MDD_EVENT_PENDING,
127 __I40E_VFLR_EVENT_PENDING,
128 __I40E_RESET_RECOVERY_PENDING,
129 __I40E_RESET_INTR_RECEIVED,
130 __I40E_REINIT_REQUESTED,
131 __I40E_PF_RESET_REQUESTED,
132 __I40E_CORE_RESET_REQUESTED,
133 __I40E_GLOBAL_RESET_REQUESTED,
134 __I40E_EMP_RESET_REQUESTED,
135 __I40E_FILTER_OVERFLOW_PROMISC,
138 enum i40e_interrupt_policy {
139 I40E_INTERRUPT_BEST_CASE,
140 I40E_INTERRUPT_MEDIUM,
141 I40E_INTERRUPT_LOWEST
144 struct i40e_lump_tracking {
148 #define I40E_PILE_VALID_BIT 0x8000
151 #define I40E_DEFAULT_ATR_SAMPLE_RATE 20
152 #define I40E_FDIR_MAX_RAW_PACKET_LOOKUP 512
153 struct i40e_fdir_data {
165 #define I40E_DCB_PRIO_TYPE_STRICT 0
166 #define I40E_DCB_PRIO_TYPE_ETS 1
167 #define I40E_DCB_STRICT_PRIO_CREDITS 127
168 #define I40E_MAX_USER_PRIORITY 8
169 /* DCB per TC information data structure */
170 struct i40e_tc_info {
171 u16 qoffset; /* Queue offset from base queue */
172 u16 qcount; /* Total Queues */
173 u8 netdev_tc; /* Netdev TC index if netdev associated */
176 /* TC configuration data structure */
177 struct i40e_tc_configuration {
178 u8 numtc; /* Total number of enabled TCs */
179 u8 enabled_tc; /* TC map */
180 struct i40e_tc_info tc_info[I40E_MAX_TRAFFIC_CLASS];
183 /* struct that defines the Ethernet device */
185 struct pci_dev *pdev;
188 unsigned long link_check_timeout;
189 struct msix_entry *msix_entries;
190 u16 num_msix_entries;
191 bool fc_autoneg_status;
194 u16 num_vmdq_vsis; /* num vmdq pools this pf has set up */
195 u16 num_vmdq_qps; /* num queue pairs per vmdq pool */
196 u16 num_vmdq_msix; /* num queue vectors per vmdq pool */
197 u16 num_req_vfs; /* num vfs requested for this vf */
198 u16 num_vf_qps; /* num queue pairs per vf */
199 u16 num_tc_qps; /* num queue pairs per TC */
200 u16 num_lan_qps; /* num lan queues this pf has set up */
201 u16 num_lan_msix; /* num queue vectors for the base pf vsi */
202 u16 rss_size; /* num queues in the RSS array */
203 u16 rss_size_max; /* HW defined max RSS queues */
204 u16 fdir_pf_filter_count; /* num of guaranteed filters for this PF */
207 enum i40e_interrupt_policy int_policy;
211 char misc_int_name[IFNAMSIZ + 9];
212 u16 adminq_work_limit; /* num of admin receive queue desc to process */
213 int service_timer_period;
214 struct timer_list service_timer;
215 struct work_struct service_task;
218 #define I40E_FLAG_RX_CSUM_ENABLED (u64)(1 << 1)
219 #define I40E_FLAG_MSI_ENABLED (u64)(1 << 2)
220 #define I40E_FLAG_MSIX_ENABLED (u64)(1 << 3)
221 #define I40E_FLAG_RX_1BUF_ENABLED (u64)(1 << 4)
222 #define I40E_FLAG_RX_PS_ENABLED (u64)(1 << 5)
223 #define I40E_FLAG_RSS_ENABLED (u64)(1 << 6)
224 #define I40E_FLAG_MQ_ENABLED (u64)(1 << 7)
225 #define I40E_FLAG_VMDQ_ENABLED (u64)(1 << 8)
226 #define I40E_FLAG_FDIR_REQUIRES_REINIT (u64)(1 << 9)
227 #define I40E_FLAG_NEED_LINK_UPDATE (u64)(1 << 10)
228 #define I40E_FLAG_IN_NETPOLL (u64)(1 << 13)
229 #define I40E_FLAG_16BYTE_RX_DESC_ENABLED (u64)(1 << 14)
230 #define I40E_FLAG_CLEAN_ADMINQ (u64)(1 << 15)
231 #define I40E_FLAG_FILTER_SYNC (u64)(1 << 16)
232 #define I40E_FLAG_PROCESS_MDD_EVENT (u64)(1 << 18)
233 #define I40E_FLAG_PROCESS_VFLR_EVENT (u64)(1 << 19)
234 #define I40E_FLAG_SRIOV_ENABLED (u64)(1 << 20)
235 #define I40E_FLAG_DCB_ENABLED (u64)(1 << 21)
236 #define I40E_FLAG_FDIR_ENABLED (u64)(1 << 22)
237 #define I40E_FLAG_FDIR_ATR_ENABLED (u64)(1 << 23)
238 #define I40E_FLAG_MFP_ENABLED (u64)(1 << 27)
243 bool stat_offsets_loaded;
244 struct i40e_hw_port_stats stats;
245 struct i40e_hw_port_stats stats_offsets;
246 u32 tx_timeout_count;
247 u32 tx_timeout_recovery_level;
248 unsigned long tx_timeout_last_recovery;
249 u32 hw_csum_rx_error;
251 u16 corer_count; /* Core reset count */
252 u16 globr_count; /* Global reset count */
253 u16 empr_count; /* EMP reset count */
254 u16 pfr_count; /* PF reset count */
255 u16 sw_int_count; /* SW interrupt count */
257 struct mutex switch_mutex;
258 u16 lan_vsi; /* our default LAN VSI */
259 u16 lan_veb; /* initial relay, if exists */
260 #define I40E_NO_VEB 0xffff
261 #define I40E_NO_VSI 0xffff
262 u16 next_vsi; /* Next unallocated VSI - 0-based! */
263 struct i40e_vsi **vsi;
264 struct i40e_veb *veb[I40E_MAX_VEB];
266 struct i40e_lump_tracking *qp_pile;
267 struct i40e_lump_tracking *irq_pile;
269 /* switch config info */
273 struct i40e_aqc_get_switch_config_data *sw_config;
274 struct kobject *switch_kobj;
275 #ifdef CONFIG_DEBUG_FS
276 struct dentry *i40e_dbg_pf;
277 #endif /* CONFIG_DEBUG_FS */
279 u16 instance; /* A unique number per i40e_pf instance in the system */
281 /* sr-iov config info */
283 int num_alloc_vfs; /* actual number of VFs allocated */
286 /* DCBx/DCBNL capability for PF that indicates
287 * whether DCBx is managed by firmware or host
288 * based agent (LLDPAD). Also, indicates what
289 * flavor of DCBx protocol (IEEE/CEE) is supported
290 * by the device. For now we're supporting IEEE
295 u32 fcoe_hmc_filt_num;
296 u32 fcoe_hmc_cntx_num;
297 struct i40e_filter_control_settings filter_settings;
300 struct i40e_mac_filter {
301 struct list_head list;
302 u8 macaddr[ETH_ALEN];
303 #define I40E_VLAN_ANY -1
305 u8 counter; /* number of instances of this filter */
306 bool is_vf; /* filter belongs to a VF */
307 bool is_netdev; /* filter belongs to a netdev */
308 bool changed; /* filter needs to be sync'd to the HW */
314 u16 veb_idx; /* index of VEB parent */
317 u16 stats_idx; /* index of VEB parent */
323 u8 bw_tc_share_credits[I40E_MAX_TRAFFIC_CLASS];
324 u16 bw_tc_limit_credits[I40E_MAX_TRAFFIC_CLASS];
325 u8 bw_tc_max_quanta[I40E_MAX_TRAFFIC_CLASS];
326 struct kobject *kobj;
327 bool stat_offsets_loaded;
328 struct i40e_eth_stats stats;
329 struct i40e_eth_stats stats_offsets;
332 /* struct that defines a VSI, associated with a dev */
334 struct net_device *netdev;
335 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
336 bool netdev_registered;
337 bool stat_offsets_loaded;
339 u32 current_netdev_flags;
341 #define I40E_VSI_FLAG_FILTER_CHANGED (1<<0)
342 #define I40E_VSI_FLAG_VEB_OWNER (1<<1)
345 struct list_head mac_filter_list;
348 struct rtnl_link_stats64 net_stats;
349 struct rtnl_link_stats64 net_stats_offsets;
350 struct i40e_eth_stats eth_stats;
351 struct i40e_eth_stats eth_stats_offsets;
357 /* These are containers of ring pointers, allocated at run-time */
358 struct i40e_ring **rx_rings;
359 struct i40e_ring **tx_rings;
362 /* high bit set means dynamic, use accessor routines to read/write.
363 * hardware only supports 2us resolution for the ITR registers.
364 * these values always store the USER setting, and must be converted
365 * before programming to a register.
375 /* List of q_vectors allocated to this VSI */
376 struct i40e_q_vector **q_vectors;
380 u16 seid; /* HW index of this VSI (absolute index) */
381 u16 id; /* VSI number */
384 u16 base_queue; /* vsi's first queue in hw array */
385 u16 alloc_queue_pairs; /* Allocated Tx/Rx queues */
386 u16 num_queue_pairs; /* Used tx and rx pairs */
388 enum i40e_vsi_type type; /* VSI type, e.g., LAN, FCoE, etc */
389 u16 vf_id; /* Virtual function ID for SRIOV VSIs */
391 struct i40e_tc_configuration tc_config;
392 struct i40e_aqc_vsi_properties_data info;
394 /* VSI BW limit (absolute across all TCs) */
395 u16 bw_limit; /* VSI BW Limit (0 = disabled) */
396 u8 bw_max_quanta; /* Max Quanta when BW limit is enabled */
398 /* Relative TC credits across VSIs */
399 u8 bw_ets_share_credits[I40E_MAX_TRAFFIC_CLASS];
400 /* TC BW limit credits within VSI */
401 u16 bw_ets_limit_credits[I40E_MAX_TRAFFIC_CLASS];
402 /* TC BW limit max quanta within VSI */
403 u8 bw_ets_max_quanta[I40E_MAX_TRAFFIC_CLASS];
405 struct i40e_pf *back; /* Backreference to associated PF */
406 u16 idx; /* index in pf->vsi[] */
407 u16 veb_idx; /* index of VEB parent */
408 struct kobject *kobj; /* sysfs object */
410 /* VSI specific handlers */
411 irqreturn_t (*irq_handler)(int irq, void *data);
412 } ____cacheline_internodealigned_in_smp;
414 struct i40e_netdev_priv {
415 struct i40e_vsi *vsi;
418 /* struct that defines an interrupt vector */
419 struct i40e_q_vector {
420 struct i40e_vsi *vsi;
422 u16 v_idx; /* index in the vsi->q_vector array. */
423 u16 reg_idx; /* register index of the interrupt */
425 struct napi_struct napi;
427 struct i40e_ring_container rx;
428 struct i40e_ring_container tx;
430 u8 num_ringpairs; /* total number of ring pairs in vector */
432 cpumask_t affinity_mask;
433 struct rcu_head rcu; /* to avoid race with update stats on free */
434 char name[IFNAMSIZ + 9];
435 } ____cacheline_internodealigned_in_smp;
439 struct list_head list;
444 * i40e_fw_version_str - format the FW and NVM version strings
445 * @hw: ptr to the hardware info
447 static inline char *i40e_fw_version_str(struct i40e_hw *hw)
451 snprintf(buf, sizeof(buf),
452 "f%d.%d a%d.%d n%02x.%02x e%08x",
453 hw->aq.fw_maj_ver, hw->aq.fw_min_ver,
454 hw->aq.api_maj_ver, hw->aq.api_min_ver,
455 (hw->nvm.version & I40E_NVM_VERSION_HI_MASK)
456 >> I40E_NVM_VERSION_HI_SHIFT,
457 (hw->nvm.version & I40E_NVM_VERSION_LO_MASK)
458 >> I40E_NVM_VERSION_LO_SHIFT,
465 * i40e_netdev_to_pf: Retrieve the PF struct for given netdev
466 * @netdev: the corresponding netdev
468 * Return the PF struct for the given netdev
470 static inline struct i40e_pf *i40e_netdev_to_pf(struct net_device *netdev)
472 struct i40e_netdev_priv *np = netdev_priv(netdev);
473 struct i40e_vsi *vsi = np->vsi;
478 static inline void i40e_vsi_setup_irqhandler(struct i40e_vsi *vsi,
479 irqreturn_t (*irq_handler)(int, void *))
481 vsi->irq_handler = irq_handler;
485 * i40e_rx_is_programming_status - check for programming status descriptor
486 * @qw: the first quad word of the program status descriptor
488 * The value of in the descriptor length field indicate if this
489 * is a programming status descriptor for flow director or FCoE
490 * by the value of I40E_RX_PROG_STATUS_DESC_LENGTH, otherwise
491 * it is a packet descriptor.
493 static inline bool i40e_rx_is_programming_status(u64 qw)
495 return I40E_RX_PROG_STATUS_DESC_LENGTH ==
496 (qw >> I40E_RX_PROG_STATUS_DESC_LENGTH_SHIFT);
499 /* needed by i40e_ethtool.c */
500 int i40e_up(struct i40e_vsi *vsi);
501 void i40e_down(struct i40e_vsi *vsi);
502 extern const char i40e_driver_name[];
503 extern const char i40e_driver_version_str[];
504 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags);
505 void i40e_update_stats(struct i40e_vsi *vsi);
506 void i40e_update_eth_stats(struct i40e_vsi *vsi);
507 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi);
508 int i40e_fetch_switch_configuration(struct i40e_pf *pf,
511 /* needed by i40e_main.c */
512 void i40e_add_fdir_filter(struct i40e_fdir_data fdir_data,
513 struct i40e_ring *tx_ring);
514 void i40e_add_remove_filter(struct i40e_fdir_data fdir_data,
515 struct i40e_ring *tx_ring);
516 void i40e_update_fdir_filter(struct i40e_fdir_data fdir_data,
517 struct i40e_ring *tx_ring);
518 int i40e_program_fdir_filter(struct i40e_fdir_data *fdir_data,
519 struct i40e_pf *pf, bool add);
521 void i40e_set_ethtool_ops(struct net_device *netdev);
522 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
523 u8 *macaddr, s16 vlan,
524 bool is_vf, bool is_netdev);
525 void i40e_del_filter(struct i40e_vsi *vsi, u8 *macaddr, s16 vlan,
526 bool is_vf, bool is_netdev);
527 int i40e_sync_vsi_filters(struct i40e_vsi *vsi);
528 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
529 u16 uplink, u32 param1);
530 int i40e_vsi_release(struct i40e_vsi *vsi);
531 struct i40e_vsi *i40e_vsi_lookup(struct i40e_pf *pf, enum i40e_vsi_type type,
532 struct i40e_vsi *start_vsi);
533 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags, u16 uplink_seid,
534 u16 downlink_seid, u8 enabled_tc);
535 void i40e_veb_release(struct i40e_veb *veb);
537 i40e_status i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid);
538 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi);
539 void i40e_vsi_reset_stats(struct i40e_vsi *vsi);
540 void i40e_pf_reset_stats(struct i40e_pf *pf);
541 #ifdef CONFIG_DEBUG_FS
542 void i40e_dbg_pf_init(struct i40e_pf *pf);
543 void i40e_dbg_pf_exit(struct i40e_pf *pf);
544 void i40e_dbg_init(void);
545 void i40e_dbg_exit(void);
547 static inline void i40e_dbg_pf_init(struct i40e_pf *pf) {}
548 static inline void i40e_dbg_pf_exit(struct i40e_pf *pf) {}
549 static inline void i40e_dbg_init(void) {}
550 static inline void i40e_dbg_exit(void) {}
551 #endif /* CONFIG_DEBUG_FS*/
552 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector);
553 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf);
554 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
555 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi);
556 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid);
557 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid);
558 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
559 bool is_vf, bool is_netdev);
560 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi);
561 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
562 bool is_vf, bool is_netdev);
563 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi);
565 #endif /* _I40E_H_ */