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 <linux/version.h>
50 #include <net/checksum.h>
51 #include <net/ip6_checksum.h>
52 #include <linux/ethtool.h>
53 #include <linux/if_vlan.h>
54 #include "i40e_type.h"
55 #include "i40e_prototype.h"
56 #include "i40e_virtchnl.h"
57 #include "i40e_virtchnl_pf.h"
58 #include "i40e_txrx.h"
60 /* Useful i40e defaults */
61 #define I40E_BASE_PF_SEID 16
62 #define I40E_BASE_VSI_SEID 512
63 #define I40E_BASE_VEB_SEID 288
64 #define I40E_MAX_VEB 16
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 (0xf << I40E_NVM_VERSION_LO_SHIFT)
86 #define I40E_NVM_VERSION_MID_SHIFT 4
87 #define I40E_NVM_VERSION_MID_MASK (0xff << I40E_NVM_VERSION_MID_SHIFT)
88 #define I40E_NVM_VERSION_HI_SHIFT 12
89 #define I40E_NVM_VERSION_HI_MASK (0xf << I40E_NVM_VERSION_HI_SHIFT)
91 /* magic for getting defines into strings */
92 #define STRINGIFY(foo) #foo
93 #define XSTRINGIFY(bar) STRINGIFY(bar)
95 #ifndef ARCH_HAS_PREFETCH
99 #define I40E_RX_DESC(R, i) \
100 ((ring_is_16byte_desc_enabled(R)) \
101 ? (union i40e_32byte_rx_desc *) \
102 (&(((union i40e_16byte_rx_desc *)((R)->desc))[i])) \
103 : (&(((union i40e_32byte_rx_desc *)((R)->desc))[i])))
104 #define I40E_TX_DESC(R, i) \
105 (&(((struct i40e_tx_desc *)((R)->desc))[i]))
106 #define I40E_TX_CTXTDESC(R, i) \
107 (&(((struct i40e_tx_context_desc *)((R)->desc))[i]))
108 #define I40E_TX_FDIRDESC(R, i) \
109 (&(((struct i40e_filter_program_desc *)((R)->desc))[i]))
111 /* default to trying for four seconds */
112 #define I40E_TRY_LINK_TIMEOUT (4 * HZ)
114 /* driver state flags */
120 __I40E_NEEDS_RESTART,
121 __I40E_SERVICE_SCHED,
122 __I40E_ADMINQ_EVENT_PENDING,
123 __I40E_MDD_EVENT_PENDING,
124 __I40E_VFLR_EVENT_PENDING,
125 __I40E_RESET_RECOVERY_PENDING,
126 __I40E_RESET_INTR_RECEIVED,
127 __I40E_REINIT_REQUESTED,
128 __I40E_PF_RESET_REQUESTED,
129 __I40E_CORE_RESET_REQUESTED,
130 __I40E_GLOBAL_RESET_REQUESTED,
131 __I40E_FILTER_OVERFLOW_PROMISC,
134 enum i40e_interrupt_policy {
135 I40E_INTERRUPT_BEST_CASE,
136 I40E_INTERRUPT_MEDIUM,
137 I40E_INTERRUPT_LOWEST
140 struct i40e_lump_tracking {
144 #define I40E_PILE_VALID_BIT 0x8000
147 #define I40E_DEFAULT_ATR_SAMPLE_RATE 20
148 #define I40E_FDIR_MAX_RAW_PACKET_LOOKUP 512
149 struct i40e_fdir_data {
161 #define I40E_DCB_PRIO_TYPE_STRICT 0
162 #define I40E_DCB_PRIO_TYPE_ETS 1
163 #define I40E_DCB_STRICT_PRIO_CREDITS 127
164 #define I40E_MAX_USER_PRIORITY 8
165 /* DCB per TC information data structure */
166 struct i40e_tc_info {
167 u16 qoffset; /* Queue offset from base queue */
168 u16 qcount; /* Total Queues */
169 u8 netdev_tc; /* Netdev TC index if netdev associated */
172 /* TC configuration data structure */
173 struct i40e_tc_configuration {
174 u8 numtc; /* Total number of enabled TCs */
175 u8 enabled_tc; /* TC map */
176 struct i40e_tc_info tc_info[I40E_MAX_TRAFFIC_CLASS];
179 /* struct that defines the Ethernet device */
181 struct pci_dev *pdev;
184 unsigned long link_check_timeout;
185 struct msix_entry *msix_entries;
186 u16 num_msix_entries;
187 bool fc_autoneg_status;
190 u16 num_vmdq_vsis; /* num vmdq pools this pf has set up */
191 u16 num_vmdq_qps; /* num queue pairs per vmdq pool */
192 u16 num_vmdq_msix; /* num queue vectors per vmdq pool */
193 u16 num_req_vfs; /* num vfs requested for this vf */
194 u16 num_vf_qps; /* num queue pairs per vf */
195 u16 num_tc_qps; /* num queue pairs per TC */
196 u16 num_lan_qps; /* num lan queues this pf has set up */
197 u16 num_lan_msix; /* num queue vectors for the base pf vsi */
198 u16 rss_size; /* num queues in the RSS array */
199 u16 rss_size_max; /* HW defined max RSS queues */
200 u16 fdir_pf_filter_count; /* num of guaranteed filters for this PF */
203 enum i40e_interrupt_policy int_policy;
207 char misc_int_name[IFNAMSIZ + 9];
208 u16 adminq_work_limit; /* num of admin receive queue desc to process */
209 int service_timer_period;
210 struct timer_list service_timer;
211 struct work_struct service_task;
214 #define I40E_FLAG_RX_CSUM_ENABLED (u64)(1 << 1)
215 #define I40E_FLAG_MSI_ENABLED (u64)(1 << 2)
216 #define I40E_FLAG_MSIX_ENABLED (u64)(1 << 3)
217 #define I40E_FLAG_RX_1BUF_ENABLED (u64)(1 << 4)
218 #define I40E_FLAG_RX_PS_ENABLED (u64)(1 << 5)
219 #define I40E_FLAG_RSS_ENABLED (u64)(1 << 6)
220 #define I40E_FLAG_MQ_ENABLED (u64)(1 << 7)
221 #define I40E_FLAG_VMDQ_ENABLED (u64)(1 << 8)
222 #define I40E_FLAG_FDIR_REQUIRES_REINIT (u64)(1 << 9)
223 #define I40E_FLAG_NEED_LINK_UPDATE (u64)(1 << 10)
224 #define I40E_FLAG_IN_NETPOLL (u64)(1 << 13)
225 #define I40E_FLAG_16BYTE_RX_DESC_ENABLED (u64)(1 << 14)
226 #define I40E_FLAG_CLEAN_ADMINQ (u64)(1 << 15)
227 #define I40E_FLAG_FILTER_SYNC (u64)(1 << 16)
228 #define I40E_FLAG_PROCESS_MDD_EVENT (u64)(1 << 18)
229 #define I40E_FLAG_PROCESS_VFLR_EVENT (u64)(1 << 19)
230 #define I40E_FLAG_SRIOV_ENABLED (u64)(1 << 20)
231 #define I40E_FLAG_DCB_ENABLED (u64)(1 << 21)
232 #define I40E_FLAG_FDIR_ENABLED (u64)(1 << 22)
233 #define I40E_FLAG_FDIR_ATR_ENABLED (u64)(1 << 23)
234 #define I40E_FLAG_MFP_ENABLED (u64)(1 << 27)
239 bool stat_offsets_loaded;
240 struct i40e_hw_port_stats stats;
241 struct i40e_hw_port_stats stats_offsets;
242 u32 tx_timeout_count;
243 u32 tx_timeout_recovery_level;
244 unsigned long tx_timeout_last_recovery;
245 u32 hw_csum_rx_error;
247 u16 corer_count; /* Core reset count */
248 u16 globr_count; /* Global reset count */
249 u16 empr_count; /* EMP reset count */
250 u16 pfr_count; /* PF reset count */
252 struct mutex switch_mutex;
253 u16 lan_vsi; /* our default LAN VSI */
254 u16 lan_veb; /* initial relay, if exists */
255 #define I40E_NO_VEB 0xffff
256 #define I40E_NO_VSI 0xffff
257 u16 next_vsi; /* Next unallocated VSI - 0-based! */
258 struct i40e_vsi **vsi;
259 struct i40e_veb *veb[I40E_MAX_VEB];
261 struct i40e_lump_tracking *qp_pile;
262 struct i40e_lump_tracking *irq_pile;
264 /* switch config info */
268 struct i40e_aqc_get_switch_config_data *sw_config;
269 struct kobject *switch_kobj;
270 #ifdef CONFIG_DEBUG_FS
271 struct dentry *i40e_dbg_pf;
272 #endif /* CONFIG_DEBUG_FS */
274 /* sr-iov config info */
276 int num_alloc_vfs; /* actual number of VFs allocated */
279 /* DCBx/DCBNL capability for PF that indicates
280 * whether DCBx is managed by firmware or host
281 * based agent (LLDPAD). Also, indicates what
282 * flavor of DCBx protocol (IEEE/CEE) is supported
283 * by the device. For now we're supporting IEEE
288 u32 fcoe_hmc_filt_num;
289 u32 fcoe_hmc_cntx_num;
290 struct i40e_filter_control_settings filter_settings;
293 struct i40e_mac_filter {
294 struct list_head list;
295 u8 macaddr[ETH_ALEN];
296 #define I40E_VLAN_ANY -1
298 u8 counter; /* number of instances of this filter */
299 bool is_vf; /* filter belongs to a VF */
300 bool is_netdev; /* filter belongs to a netdev */
301 bool changed; /* filter needs to be sync'd to the HW */
307 u16 veb_idx; /* index of VEB parent */
310 u16 stats_idx; /* index of VEB parent */
316 u8 bw_tc_share_credits[I40E_MAX_TRAFFIC_CLASS];
317 u16 bw_tc_limit_credits[I40E_MAX_TRAFFIC_CLASS];
318 u8 bw_tc_max_quanta[I40E_MAX_TRAFFIC_CLASS];
319 struct kobject *kobj;
320 bool stat_offsets_loaded;
321 struct i40e_eth_stats stats;
322 struct i40e_eth_stats stats_offsets;
325 /* struct that defines a VSI, associated with a dev */
327 struct net_device *netdev;
328 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
329 bool netdev_registered;
330 bool stat_offsets_loaded;
332 u32 current_netdev_flags;
334 #define I40E_VSI_FLAG_FILTER_CHANGED (1<<0)
335 #define I40E_VSI_FLAG_VEB_OWNER (1<<1)
338 struct list_head mac_filter_list;
341 struct rtnl_link_stats64 net_stats;
342 struct rtnl_link_stats64 net_stats_offsets;
343 struct i40e_eth_stats eth_stats;
344 struct i40e_eth_stats eth_stats_offsets;
350 /* These are containers of ring pointers, allocated at run-time */
351 struct i40e_ring **rx_rings;
352 struct i40e_ring **tx_rings;
355 /* high bit set means dynamic, use accessor routines to read/write.
356 * hardware only supports 2us resolution for the ITR registers.
357 * these values always store the USER setting, and must be converted
358 * before programming to a register.
368 /* List of q_vectors allocated to this VSI */
369 struct i40e_q_vector **q_vectors;
373 u16 seid; /* HW index of this VSI (absolute index) */
374 u16 id; /* VSI number */
377 u16 base_queue; /* vsi's first queue in hw array */
378 u16 alloc_queue_pairs; /* Allocated Tx/Rx queues */
379 u16 num_queue_pairs; /* Used tx and rx pairs */
381 enum i40e_vsi_type type; /* VSI type, e.g., LAN, FCoE, etc */
382 u16 vf_id; /* Virtual function ID for SRIOV VSIs */
384 struct i40e_tc_configuration tc_config;
385 struct i40e_aqc_vsi_properties_data info;
387 /* VSI BW limit (absolute across all TCs) */
388 u16 bw_limit; /* VSI BW Limit (0 = disabled) */
389 u8 bw_max_quanta; /* Max Quanta when BW limit is enabled */
391 /* Relative TC credits across VSIs */
392 u8 bw_ets_share_credits[I40E_MAX_TRAFFIC_CLASS];
393 /* TC BW limit credits within VSI */
394 u16 bw_ets_limit_credits[I40E_MAX_TRAFFIC_CLASS];
395 /* TC BW limit max quanta within VSI */
396 u8 bw_ets_max_quanta[I40E_MAX_TRAFFIC_CLASS];
398 struct i40e_pf *back; /* Backreference to associated PF */
399 u16 idx; /* index in pf->vsi[] */
400 u16 veb_idx; /* index of VEB parent */
401 struct kobject *kobj; /* sysfs object */
403 /* VSI specific handlers */
404 irqreturn_t (*irq_handler)(int irq, void *data);
405 } ____cacheline_internodealigned_in_smp;
407 struct i40e_netdev_priv {
408 struct i40e_vsi *vsi;
411 /* struct that defines an interrupt vector */
412 struct i40e_q_vector {
413 struct i40e_vsi *vsi;
415 u16 v_idx; /* index in the vsi->q_vector array. */
416 u16 reg_idx; /* register index of the interrupt */
418 struct napi_struct napi;
420 struct i40e_ring_container rx;
421 struct i40e_ring_container tx;
423 u8 num_ringpairs; /* total number of ring pairs in vector */
425 cpumask_t affinity_mask;
426 struct rcu_head rcu; /* to avoid race with update stats on free */
427 char name[IFNAMSIZ + 9];
428 } ____cacheline_internodealigned_in_smp;
432 struct list_head list;
437 * i40e_fw_version_str - format the FW and NVM version strings
438 * @hw: ptr to the hardware info
440 static inline char *i40e_fw_version_str(struct i40e_hw *hw)
444 snprintf(buf, sizeof(buf),
445 "f%d.%d a%d.%d n%02d.%02d.%02d e%08x",
446 hw->aq.fw_maj_ver, hw->aq.fw_min_ver,
447 hw->aq.api_maj_ver, hw->aq.api_min_ver,
448 (hw->nvm.version & I40E_NVM_VERSION_HI_MASK)
449 >> I40E_NVM_VERSION_HI_SHIFT,
450 (hw->nvm.version & I40E_NVM_VERSION_MID_MASK)
451 >> I40E_NVM_VERSION_MID_SHIFT,
452 (hw->nvm.version & I40E_NVM_VERSION_LO_MASK)
453 >> I40E_NVM_VERSION_LO_SHIFT,
460 * i40e_netdev_to_pf: Retrieve the PF struct for given netdev
461 * @netdev: the corresponding netdev
463 * Return the PF struct for the given netdev
465 static inline struct i40e_pf *i40e_netdev_to_pf(struct net_device *netdev)
467 struct i40e_netdev_priv *np = netdev_priv(netdev);
468 struct i40e_vsi *vsi = np->vsi;
473 static inline void i40e_vsi_setup_irqhandler(struct i40e_vsi *vsi,
474 irqreturn_t (*irq_handler)(int, void *))
476 vsi->irq_handler = irq_handler;
480 * i40e_rx_is_programming_status - check for programming status descriptor
481 * @qw: the first quad word of the program status descriptor
483 * The value of in the descriptor length field indicate if this
484 * is a programming status descriptor for flow director or FCoE
485 * by the value of I40E_RX_PROG_STATUS_DESC_LENGTH, otherwise
486 * it is a packet descriptor.
488 static inline bool i40e_rx_is_programming_status(u64 qw)
490 return I40E_RX_PROG_STATUS_DESC_LENGTH ==
491 (qw >> I40E_RX_PROG_STATUS_DESC_LENGTH_SHIFT);
494 /* needed by i40e_ethtool.c */
495 int i40e_up(struct i40e_vsi *vsi);
496 void i40e_down(struct i40e_vsi *vsi);
497 extern const char i40e_driver_name[];
498 extern const char i40e_driver_version_str[];
499 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags);
500 void i40e_update_stats(struct i40e_vsi *vsi);
501 void i40e_update_eth_stats(struct i40e_vsi *vsi);
502 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi);
503 int i40e_fetch_switch_configuration(struct i40e_pf *pf,
506 /* needed by i40e_main.c */
507 void i40e_add_fdir_filter(struct i40e_fdir_data fdir_data,
508 struct i40e_ring *tx_ring);
509 void i40e_add_remove_filter(struct i40e_fdir_data fdir_data,
510 struct i40e_ring *tx_ring);
511 void i40e_update_fdir_filter(struct i40e_fdir_data fdir_data,
512 struct i40e_ring *tx_ring);
513 int i40e_program_fdir_filter(struct i40e_fdir_data *fdir_data,
514 struct i40e_pf *pf, bool add);
516 void i40e_set_ethtool_ops(struct net_device *netdev);
517 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
518 u8 *macaddr, s16 vlan,
519 bool is_vf, bool is_netdev);
520 void i40e_del_filter(struct i40e_vsi *vsi, u8 *macaddr, s16 vlan,
521 bool is_vf, bool is_netdev);
522 int i40e_sync_vsi_filters(struct i40e_vsi *vsi);
523 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
524 u16 uplink, u32 param1);
525 int i40e_vsi_release(struct i40e_vsi *vsi);
526 struct i40e_vsi *i40e_vsi_lookup(struct i40e_pf *pf, enum i40e_vsi_type type,
527 struct i40e_vsi *start_vsi);
528 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags, u16 uplink_seid,
529 u16 downlink_seid, u8 enabled_tc);
530 void i40e_veb_release(struct i40e_veb *veb);
532 i40e_status i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid);
533 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi);
534 void i40e_vsi_reset_stats(struct i40e_vsi *vsi);
535 void i40e_pf_reset_stats(struct i40e_pf *pf);
536 #ifdef CONFIG_DEBUG_FS
537 void i40e_dbg_pf_init(struct i40e_pf *pf);
538 void i40e_dbg_pf_exit(struct i40e_pf *pf);
539 void i40e_dbg_init(void);
540 void i40e_dbg_exit(void);
542 static inline void i40e_dbg_pf_init(struct i40e_pf *pf) {}
543 static inline void i40e_dbg_pf_exit(struct i40e_pf *pf) {}
544 static inline void i40e_dbg_init(void) {}
545 static inline void i40e_dbg_exit(void) {}
546 #endif /* CONFIG_DEBUG_FS*/
547 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector);
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_ */