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
65 #define I40E_MAX_NUM_DESCRIPTORS 4096
66 #define I40E_MAX_REGISTER 0x0038FFFF
67 #define I40E_DEFAULT_NUM_DESCRIPTORS 512
68 #define I40E_REQ_DESCRIPTOR_MULTIPLE 32
69 #define I40E_MIN_NUM_DESCRIPTORS 64
70 #define I40E_MIN_MSIX 2
71 #define I40E_DEFAULT_NUM_VMDQ_VSI 8 /* max 256 VSIs */
72 #define I40E_DEFAULT_QUEUES_PER_VMDQ 2 /* max 16 qps */
73 #define I40E_DEFAULT_QUEUES_PER_VF 4
74 #define I40E_DEFAULT_QUEUES_PER_TC 1 /* should be a power of 2 */
75 #define I40E_FDIR_RING 0
76 #define I40E_FDIR_RING_COUNT 32
77 #define I40E_MAX_AQ_BUF_SIZE 4096
78 #define I40E_AQ_LEN 32
79 #define I40E_AQ_WORK_LIMIT 16
80 #define I40E_MAX_USER_PRIORITY 8
81 #define I40E_DEFAULT_MSG_ENABLE 4
83 #define I40E_NVM_VERSION_LO_SHIFT 0
84 #define I40E_NVM_VERSION_LO_MASK (0xf << I40E_NVM_VERSION_LO_SHIFT)
85 #define I40E_NVM_VERSION_MID_SHIFT 4
86 #define I40E_NVM_VERSION_MID_MASK (0xff << I40E_NVM_VERSION_MID_SHIFT)
87 #define I40E_NVM_VERSION_HI_SHIFT 12
88 #define I40E_NVM_VERSION_HI_MASK (0xf << I40E_NVM_VERSION_HI_SHIFT)
90 /* magic for getting defines into strings */
91 #define STRINGIFY(foo) #foo
92 #define XSTRINGIFY(bar) STRINGIFY(bar)
94 #ifndef ARCH_HAS_PREFETCH
98 #define I40E_RX_DESC(R, i) \
99 ((ring_is_16byte_desc_enabled(R)) \
100 ? (union i40e_32byte_rx_desc *) \
101 (&(((union i40e_16byte_rx_desc *)((R)->desc))[i])) \
102 : (&(((union i40e_32byte_rx_desc *)((R)->desc))[i])))
103 #define I40E_TX_DESC(R, i) \
104 (&(((struct i40e_tx_desc *)((R)->desc))[i]))
105 #define I40E_TX_CTXTDESC(R, i) \
106 (&(((struct i40e_tx_context_desc *)((R)->desc))[i]))
107 #define I40E_TX_FDIRDESC(R, i) \
108 (&(((struct i40e_filter_program_desc *)((R)->desc))[i]))
110 /* default to trying for four seconds */
111 #define I40E_TRY_LINK_TIMEOUT (4 * HZ)
113 /* driver state flags */
119 __I40E_NEEDS_RESTART,
120 __I40E_SERVICE_SCHED,
121 __I40E_ADMINQ_EVENT_PENDING,
122 __I40E_MDD_EVENT_PENDING,
123 __I40E_VFLR_EVENT_PENDING,
124 __I40E_RESET_RECOVERY_PENDING,
125 __I40E_RESET_INTR_RECEIVED,
126 __I40E_REINIT_REQUESTED,
127 __I40E_PF_RESET_REQUESTED,
128 __I40E_CORE_RESET_REQUESTED,
129 __I40E_GLOBAL_RESET_REQUESTED,
130 __I40E_FILTER_OVERFLOW_PROMISC,
133 enum i40e_interrupt_policy {
134 I40E_INTERRUPT_BEST_CASE,
135 I40E_INTERRUPT_MEDIUM,
136 I40E_INTERRUPT_LOWEST
139 struct i40e_lump_tracking {
143 #define I40E_PILE_VALID_BIT 0x8000
146 #define I40E_DEFAULT_ATR_SAMPLE_RATE 20
147 #define I40E_FDIR_MAX_RAW_PACKET_LOOKUP 512
148 struct i40e_fdir_data {
160 #define I40E_DCB_PRIO_TYPE_STRICT 0
161 #define I40E_DCB_PRIO_TYPE_ETS 1
162 #define I40E_DCB_STRICT_PRIO_CREDITS 127
163 #define I40E_MAX_USER_PRIORITY 8
164 /* DCB per TC information data structure */
165 struct i40e_tc_info {
166 u16 qoffset; /* Queue offset from base queue */
167 u16 qcount; /* Total Queues */
168 u8 netdev_tc; /* Netdev TC index if netdev associated */
171 /* TC configuration data structure */
172 struct i40e_tc_configuration {
173 u8 numtc; /* Total number of enabled TCs */
174 u8 enabled_tc; /* TC map */
175 struct i40e_tc_info tc_info[I40E_MAX_TRAFFIC_CLASS];
178 /* struct that defines the Ethernet device */
180 struct pci_dev *pdev;
183 unsigned long link_check_timeout;
184 struct msix_entry *msix_entries;
185 u16 num_msix_entries;
186 bool fc_autoneg_status;
189 u16 num_vmdq_vsis; /* num vmdq pools this pf has set up */
190 u16 num_vmdq_qps; /* num queue pairs per vmdq pool */
191 u16 num_vmdq_msix; /* num queue vectors per vmdq pool */
192 u16 num_req_vfs; /* num vfs requested for this vf */
193 u16 num_vf_qps; /* num queue pairs per vf */
194 u16 num_tc_qps; /* num queue pairs per TC */
195 u16 num_lan_qps; /* num lan queues this pf has set up */
196 u16 num_lan_msix; /* num queue vectors for the base pf vsi */
197 u16 rss_size; /* num queues in the RSS array */
198 u16 rss_size_max; /* HW defined max RSS queues */
199 u16 fdir_pf_filter_count; /* num of guaranteed filters for this PF */
202 enum i40e_interrupt_policy int_policy;
206 char misc_int_name[IFNAMSIZ + 9];
207 u16 adminq_work_limit; /* num of admin receive queue desc to process */
208 int service_timer_period;
209 struct timer_list service_timer;
210 struct work_struct service_task;
213 #define I40E_FLAG_RX_CSUM_ENABLED (u64)(1 << 1)
214 #define I40E_FLAG_MSI_ENABLED (u64)(1 << 2)
215 #define I40E_FLAG_MSIX_ENABLED (u64)(1 << 3)
216 #define I40E_FLAG_RX_1BUF_ENABLED (u64)(1 << 4)
217 #define I40E_FLAG_RX_PS_ENABLED (u64)(1 << 5)
218 #define I40E_FLAG_RSS_ENABLED (u64)(1 << 6)
219 #define I40E_FLAG_MQ_ENABLED (u64)(1 << 7)
220 #define I40E_FLAG_VMDQ_ENABLED (u64)(1 << 8)
221 #define I40E_FLAG_FDIR_REQUIRES_REINIT (u64)(1 << 9)
222 #define I40E_FLAG_NEED_LINK_UPDATE (u64)(1 << 10)
223 #define I40E_FLAG_IN_NETPOLL (u64)(1 << 13)
224 #define I40E_FLAG_16BYTE_RX_DESC_ENABLED (u64)(1 << 14)
225 #define I40E_FLAG_CLEAN_ADMINQ (u64)(1 << 15)
226 #define I40E_FLAG_FILTER_SYNC (u64)(1 << 16)
227 #define I40E_FLAG_PROCESS_MDD_EVENT (u64)(1 << 18)
228 #define I40E_FLAG_PROCESS_VFLR_EVENT (u64)(1 << 19)
229 #define I40E_FLAG_SRIOV_ENABLED (u64)(1 << 20)
230 #define I40E_FLAG_DCB_ENABLED (u64)(1 << 21)
231 #define I40E_FLAG_FDIR_ENABLED (u64)(1 << 22)
232 #define I40E_FLAG_FDIR_ATR_ENABLED (u64)(1 << 23)
233 #define I40E_FLAG_MFP_ENABLED (u64)(1 << 27)
238 bool stat_offsets_loaded;
239 struct i40e_hw_port_stats stats;
240 struct i40e_hw_port_stats stats_offsets;
241 u32 tx_timeout_count;
242 u32 tx_timeout_recovery_level;
243 unsigned long tx_timeout_last_recovery;
244 u32 hw_csum_rx_error;
246 u16 corer_count; /* Core reset count */
247 u16 globr_count; /* Global reset count */
248 u16 empr_count; /* EMP reset count */
249 u16 pfr_count; /* PF reset count */
251 struct mutex switch_mutex;
252 u16 lan_vsi; /* our default LAN VSI */
253 u16 lan_veb; /* initial relay, if exists */
254 #define I40E_NO_VEB 0xffff
255 #define I40E_NO_VSI 0xffff
256 u16 next_vsi; /* Next unallocated VSI - 0-based! */
257 struct i40e_vsi **vsi;
258 struct i40e_veb *veb[I40E_MAX_VEB];
260 struct i40e_lump_tracking *qp_pile;
261 struct i40e_lump_tracking *irq_pile;
263 /* switch config info */
267 struct i40e_aqc_get_switch_config_data *sw_config;
268 struct kobject *switch_kobj;
269 #ifdef CONFIG_DEBUG_FS
270 struct dentry *i40e_dbg_pf;
271 #endif /* CONFIG_DEBUG_FS */
273 /* sr-iov config info */
275 int num_alloc_vfs; /* actual number of VFs allocated */
278 /* DCBx/DCBNL capability for PF that indicates
279 * whether DCBx is managed by firmware or host
280 * based agent (LLDPAD). Also, indicates what
281 * flavor of DCBx protocol (IEEE/CEE) is supported
282 * by the device. For now we're supporting IEEE
287 u32 fcoe_hmc_filt_num;
288 u32 fcoe_hmc_cntx_num;
289 struct i40e_filter_control_settings filter_settings;
292 struct i40e_mac_filter {
293 struct list_head list;
294 u8 macaddr[ETH_ALEN];
295 #define I40E_VLAN_ANY -1
297 u8 counter; /* number of instances of this filter */
298 bool is_vf; /* filter belongs to a VF */
299 bool is_netdev; /* filter belongs to a netdev */
300 bool changed; /* filter needs to be sync'd to the HW */
306 u16 veb_idx; /* index of VEB parent */
309 u16 stats_idx; /* index of VEB parent */
315 u8 bw_tc_share_credits[I40E_MAX_TRAFFIC_CLASS];
316 u16 bw_tc_limit_credits[I40E_MAX_TRAFFIC_CLASS];
317 u8 bw_tc_max_quanta[I40E_MAX_TRAFFIC_CLASS];
318 struct kobject *kobj;
319 bool stat_offsets_loaded;
320 struct i40e_eth_stats stats;
321 struct i40e_eth_stats stats_offsets;
324 /* struct that defines a VSI, associated with a dev */
326 struct net_device *netdev;
327 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
328 bool netdev_registered;
329 bool stat_offsets_loaded;
331 u32 current_netdev_flags;
333 #define I40E_VSI_FLAG_FILTER_CHANGED (1<<0)
334 #define I40E_VSI_FLAG_VEB_OWNER (1<<1)
337 struct list_head mac_filter_list;
340 struct rtnl_link_stats64 net_stats;
341 struct rtnl_link_stats64 net_stats_offsets;
342 struct i40e_eth_stats eth_stats;
343 struct i40e_eth_stats eth_stats_offsets;
349 /* These are containers of ring pointers, allocated at run-time */
350 struct i40e_ring **rx_rings;
351 struct i40e_ring **tx_rings;
354 /* high bit set means dynamic, use accessor routines to read/write.
355 * hardware only supports 2us resolution for the ITR registers.
356 * these values always store the USER setting, and must be converted
357 * before programming to a register.
367 /* List of q_vectors allocated to this VSI */
368 struct i40e_q_vector **q_vectors;
372 u16 seid; /* HW index of this VSI (absolute index) */
373 u16 id; /* VSI number */
376 u16 base_queue; /* vsi's first queue in hw array */
377 u16 alloc_queue_pairs; /* Allocated Tx/Rx queues */
378 u16 num_queue_pairs; /* Used tx and rx pairs */
380 enum i40e_vsi_type type; /* VSI type, e.g., LAN, FCoE, etc */
381 u16 vf_id; /* Virtual function ID for SRIOV VSIs */
383 struct i40e_tc_configuration tc_config;
384 struct i40e_aqc_vsi_properties_data info;
386 /* VSI BW limit (absolute across all TCs) */
387 u16 bw_limit; /* VSI BW Limit (0 = disabled) */
388 u8 bw_max_quanta; /* Max Quanta when BW limit is enabled */
390 /* Relative TC credits across VSIs */
391 u8 bw_ets_share_credits[I40E_MAX_TRAFFIC_CLASS];
392 /* TC BW limit credits within VSI */
393 u16 bw_ets_limit_credits[I40E_MAX_TRAFFIC_CLASS];
394 /* TC BW limit max quanta within VSI */
395 u8 bw_ets_max_quanta[I40E_MAX_TRAFFIC_CLASS];
397 struct i40e_pf *back; /* Backreference to associated PF */
398 u16 idx; /* index in pf->vsi[] */
399 u16 veb_idx; /* index of VEB parent */
400 struct kobject *kobj; /* sysfs object */
402 /* VSI specific handlers */
403 irqreturn_t (*irq_handler)(int irq, void *data);
404 } ____cacheline_internodealigned_in_smp;
406 struct i40e_netdev_priv {
407 struct i40e_vsi *vsi;
410 /* struct that defines an interrupt vector */
411 struct i40e_q_vector {
412 struct i40e_vsi *vsi;
414 u16 v_idx; /* index in the vsi->q_vector array. */
415 u16 reg_idx; /* register index of the interrupt */
417 struct napi_struct napi;
419 struct i40e_ring_container rx;
420 struct i40e_ring_container tx;
422 u8 num_ringpairs; /* total number of ring pairs in vector */
424 cpumask_t affinity_mask;
425 struct rcu_head rcu; /* to avoid race with update stats on free */
426 char name[IFNAMSIZ + 9];
427 } ____cacheline_internodealigned_in_smp;
431 struct list_head list;
436 * i40e_fw_version_str - format the FW and NVM version strings
437 * @hw: ptr to the hardware info
439 static inline char *i40e_fw_version_str(struct i40e_hw *hw)
443 snprintf(buf, sizeof(buf),
444 "f%d.%d a%d.%d n%02d.%02d.%02d e%08x",
445 hw->aq.fw_maj_ver, hw->aq.fw_min_ver,
446 hw->aq.api_maj_ver, hw->aq.api_min_ver,
447 (hw->nvm.version & I40E_NVM_VERSION_HI_MASK)
448 >> I40E_NVM_VERSION_HI_SHIFT,
449 (hw->nvm.version & I40E_NVM_VERSION_MID_MASK)
450 >> I40E_NVM_VERSION_MID_SHIFT,
451 (hw->nvm.version & I40E_NVM_VERSION_LO_MASK)
452 >> I40E_NVM_VERSION_LO_SHIFT,
459 * i40e_netdev_to_pf: Retrieve the PF struct for given netdev
460 * @netdev: the corresponding netdev
462 * Return the PF struct for the given netdev
464 static inline struct i40e_pf *i40e_netdev_to_pf(struct net_device *netdev)
466 struct i40e_netdev_priv *np = netdev_priv(netdev);
467 struct i40e_vsi *vsi = np->vsi;
472 static inline void i40e_vsi_setup_irqhandler(struct i40e_vsi *vsi,
473 irqreturn_t (*irq_handler)(int, void *))
475 vsi->irq_handler = irq_handler;
479 * i40e_rx_is_programming_status - check for programming status descriptor
480 * @qw: the first quad word of the program status descriptor
482 * The value of in the descriptor length field indicate if this
483 * is a programming status descriptor for flow director or FCoE
484 * by the value of I40E_RX_PROG_STATUS_DESC_LENGTH, otherwise
485 * it is a packet descriptor.
487 static inline bool i40e_rx_is_programming_status(u64 qw)
489 return I40E_RX_PROG_STATUS_DESC_LENGTH ==
490 (qw >> I40E_RX_PROG_STATUS_DESC_LENGTH_SHIFT);
493 /* needed by i40e_ethtool.c */
494 int i40e_up(struct i40e_vsi *vsi);
495 void i40e_down(struct i40e_vsi *vsi);
496 extern const char i40e_driver_name[];
497 extern const char i40e_driver_version_str[];
498 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags);
499 void i40e_update_stats(struct i40e_vsi *vsi);
500 void i40e_update_eth_stats(struct i40e_vsi *vsi);
501 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi);
502 int i40e_fetch_switch_configuration(struct i40e_pf *pf,
505 /* needed by i40e_main.c */
506 void i40e_add_fdir_filter(struct i40e_fdir_data fdir_data,
507 struct i40e_ring *tx_ring);
508 void i40e_add_remove_filter(struct i40e_fdir_data fdir_data,
509 struct i40e_ring *tx_ring);
510 void i40e_update_fdir_filter(struct i40e_fdir_data fdir_data,
511 struct i40e_ring *tx_ring);
512 int i40e_program_fdir_filter(struct i40e_fdir_data *fdir_data,
513 struct i40e_pf *pf, bool add);
515 void i40e_set_ethtool_ops(struct net_device *netdev);
516 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
517 u8 *macaddr, s16 vlan,
518 bool is_vf, bool is_netdev);
519 void i40e_del_filter(struct i40e_vsi *vsi, u8 *macaddr, s16 vlan,
520 bool is_vf, bool is_netdev);
521 int i40e_sync_vsi_filters(struct i40e_vsi *vsi);
522 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
523 u16 uplink, u32 param1);
524 int i40e_vsi_release(struct i40e_vsi *vsi);
525 struct i40e_vsi *i40e_vsi_lookup(struct i40e_pf *pf, enum i40e_vsi_type type,
526 struct i40e_vsi *start_vsi);
527 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags, u16 uplink_seid,
528 u16 downlink_seid, u8 enabled_tc);
529 void i40e_veb_release(struct i40e_veb *veb);
531 i40e_status i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid);
532 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi);
533 void i40e_vsi_reset_stats(struct i40e_vsi *vsi);
534 void i40e_pf_reset_stats(struct i40e_pf *pf);
535 #ifdef CONFIG_DEBUG_FS
536 void i40e_dbg_pf_init(struct i40e_pf *pf);
537 void i40e_dbg_pf_exit(struct i40e_pf *pf);
538 void i40e_dbg_init(void);
539 void i40e_dbg_exit(void);
541 static inline void i40e_dbg_pf_init(struct i40e_pf *pf) {}
542 static inline void i40e_dbg_pf_exit(struct i40e_pf *pf) {}
543 static inline void i40e_dbg_init(void) {}
544 static inline void i40e_dbg_exit(void) {}
545 #endif /* CONFIG_DEBUG_FS*/
546 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector);
547 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf);
548 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
549 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi);
550 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid);
551 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid);
552 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
553 bool is_vf, bool is_netdev);
554 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi);
555 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
556 bool is_vf, bool is_netdev);
557 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi);
559 #endif /* _I40E_H_ */