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,
139 enum i40e_interrupt_policy {
140 I40E_INTERRUPT_BEST_CASE,
141 I40E_INTERRUPT_MEDIUM,
142 I40E_INTERRUPT_LOWEST
145 struct i40e_lump_tracking {
149 #define I40E_PILE_VALID_BIT 0x8000
152 #define I40E_DEFAULT_ATR_SAMPLE_RATE 20
153 #define I40E_FDIR_MAX_RAW_PACKET_LOOKUP 512
154 struct i40e_fdir_data {
166 #define I40E_DCB_PRIO_TYPE_STRICT 0
167 #define I40E_DCB_PRIO_TYPE_ETS 1
168 #define I40E_DCB_STRICT_PRIO_CREDITS 127
169 #define I40E_MAX_USER_PRIORITY 8
170 /* DCB per TC information data structure */
171 struct i40e_tc_info {
172 u16 qoffset; /* Queue offset from base queue */
173 u16 qcount; /* Total Queues */
174 u8 netdev_tc; /* Netdev TC index if netdev associated */
177 /* TC configuration data structure */
178 struct i40e_tc_configuration {
179 u8 numtc; /* Total number of enabled TCs */
180 u8 enabled_tc; /* TC map */
181 struct i40e_tc_info tc_info[I40E_MAX_TRAFFIC_CLASS];
184 /* struct that defines the Ethernet device */
186 struct pci_dev *pdev;
189 unsigned long link_check_timeout;
190 struct msix_entry *msix_entries;
191 u16 num_msix_entries;
192 bool fc_autoneg_status;
195 u16 num_vmdq_vsis; /* num vmdq pools this pf has set up */
196 u16 num_vmdq_qps; /* num queue pairs per vmdq pool */
197 u16 num_vmdq_msix; /* num queue vectors per vmdq pool */
198 u16 num_req_vfs; /* num vfs requested for this vf */
199 u16 num_vf_qps; /* num queue pairs per vf */
200 u16 num_tc_qps; /* num queue pairs per TC */
201 u16 num_lan_qps; /* num lan queues this pf has set up */
202 u16 num_lan_msix; /* num queue vectors for the base pf vsi */
203 int queues_left; /* queues left unclaimed */
204 u16 rss_size; /* num queues in the RSS array */
205 u16 rss_size_max; /* HW defined max RSS queues */
206 u16 fdir_pf_filter_count; /* num of guaranteed filters for this PF */
209 enum i40e_interrupt_policy int_policy;
213 char misc_int_name[IFNAMSIZ + 9];
214 u16 adminq_work_limit; /* num of admin receive queue desc to process */
215 int service_timer_period;
216 struct timer_list service_timer;
217 struct work_struct service_task;
220 #define I40E_FLAG_RX_CSUM_ENABLED (u64)(1 << 1)
221 #define I40E_FLAG_MSI_ENABLED (u64)(1 << 2)
222 #define I40E_FLAG_MSIX_ENABLED (u64)(1 << 3)
223 #define I40E_FLAG_RX_1BUF_ENABLED (u64)(1 << 4)
224 #define I40E_FLAG_RX_PS_ENABLED (u64)(1 << 5)
225 #define I40E_FLAG_RSS_ENABLED (u64)(1 << 6)
226 #define I40E_FLAG_MQ_ENABLED (u64)(1 << 7)
227 #define I40E_FLAG_VMDQ_ENABLED (u64)(1 << 8)
228 #define I40E_FLAG_FDIR_REQUIRES_REINIT (u64)(1 << 9)
229 #define I40E_FLAG_NEED_LINK_UPDATE (u64)(1 << 10)
230 #define I40E_FLAG_IN_NETPOLL (u64)(1 << 13)
231 #define I40E_FLAG_16BYTE_RX_DESC_ENABLED (u64)(1 << 14)
232 #define I40E_FLAG_CLEAN_ADMINQ (u64)(1 << 15)
233 #define I40E_FLAG_FILTER_SYNC (u64)(1 << 16)
234 #define I40E_FLAG_PROCESS_MDD_EVENT (u64)(1 << 18)
235 #define I40E_FLAG_PROCESS_VFLR_EVENT (u64)(1 << 19)
236 #define I40E_FLAG_SRIOV_ENABLED (u64)(1 << 20)
237 #define I40E_FLAG_DCB_ENABLED (u64)(1 << 21)
238 #define I40E_FLAG_FDIR_ENABLED (u64)(1 << 22)
239 #define I40E_FLAG_FDIR_ATR_ENABLED (u64)(1 << 23)
240 #define I40E_FLAG_MFP_ENABLED (u64)(1 << 27)
245 bool stat_offsets_loaded;
246 struct i40e_hw_port_stats stats;
247 struct i40e_hw_port_stats stats_offsets;
248 u32 tx_timeout_count;
249 u32 tx_timeout_recovery_level;
250 unsigned long tx_timeout_last_recovery;
251 u32 hw_csum_rx_error;
253 u16 corer_count; /* Core reset count */
254 u16 globr_count; /* Global reset count */
255 u16 empr_count; /* EMP reset count */
256 u16 pfr_count; /* PF reset count */
257 u16 sw_int_count; /* SW interrupt count */
259 struct mutex switch_mutex;
260 u16 lan_vsi; /* our default LAN VSI */
261 u16 lan_veb; /* initial relay, if exists */
262 #define I40E_NO_VEB 0xffff
263 #define I40E_NO_VSI 0xffff
264 u16 next_vsi; /* Next unallocated VSI - 0-based! */
265 struct i40e_vsi **vsi;
266 struct i40e_veb *veb[I40E_MAX_VEB];
268 struct i40e_lump_tracking *qp_pile;
269 struct i40e_lump_tracking *irq_pile;
271 /* switch config info */
275 struct i40e_aqc_get_switch_config_data *sw_config;
276 struct kobject *switch_kobj;
277 #ifdef CONFIG_DEBUG_FS
278 struct dentry *i40e_dbg_pf;
279 #endif /* CONFIG_DEBUG_FS */
281 u16 instance; /* A unique number per i40e_pf instance in the system */
283 /* sr-iov config info */
285 int num_alloc_vfs; /* actual number of VFs allocated */
288 /* DCBx/DCBNL capability for PF that indicates
289 * whether DCBx is managed by firmware or host
290 * based agent (LLDPAD). Also, indicates what
291 * flavor of DCBx protocol (IEEE/CEE) is supported
292 * by the device. For now we're supporting IEEE
297 u32 fcoe_hmc_filt_num;
298 u32 fcoe_hmc_cntx_num;
299 struct i40e_filter_control_settings filter_settings;
302 struct i40e_mac_filter {
303 struct list_head list;
304 u8 macaddr[ETH_ALEN];
305 #define I40E_VLAN_ANY -1
307 u8 counter; /* number of instances of this filter */
308 bool is_vf; /* filter belongs to a VF */
309 bool is_netdev; /* filter belongs to a netdev */
310 bool changed; /* filter needs to be sync'd to the HW */
316 u16 veb_idx; /* index of VEB parent */
319 u16 stats_idx; /* index of VEB parent */
325 u8 bw_tc_share_credits[I40E_MAX_TRAFFIC_CLASS];
326 u16 bw_tc_limit_credits[I40E_MAX_TRAFFIC_CLASS];
327 u8 bw_tc_max_quanta[I40E_MAX_TRAFFIC_CLASS];
328 struct kobject *kobj;
329 bool stat_offsets_loaded;
330 struct i40e_eth_stats stats;
331 struct i40e_eth_stats stats_offsets;
334 /* struct that defines a VSI, associated with a dev */
336 struct net_device *netdev;
337 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
338 bool netdev_registered;
339 bool stat_offsets_loaded;
341 u32 current_netdev_flags;
343 #define I40E_VSI_FLAG_FILTER_CHANGED (1<<0)
344 #define I40E_VSI_FLAG_VEB_OWNER (1<<1)
347 struct list_head mac_filter_list;
350 struct rtnl_link_stats64 net_stats;
351 struct rtnl_link_stats64 net_stats_offsets;
352 struct i40e_eth_stats eth_stats;
353 struct i40e_eth_stats eth_stats_offsets;
359 /* These are containers of ring pointers, allocated at run-time */
360 struct i40e_ring **rx_rings;
361 struct i40e_ring **tx_rings;
364 /* high bit set means dynamic, use accessor routines to read/write.
365 * hardware only supports 2us resolution for the ITR registers.
366 * these values always store the USER setting, and must be converted
367 * before programming to a register.
377 /* List of q_vectors allocated to this VSI */
378 struct i40e_q_vector **q_vectors;
382 u16 seid; /* HW index of this VSI (absolute index) */
383 u16 id; /* VSI number */
386 u16 base_queue; /* vsi's first queue in hw array */
387 u16 alloc_queue_pairs; /* Allocated Tx/Rx queues */
388 u16 num_queue_pairs; /* Used tx and rx pairs */
390 enum i40e_vsi_type type; /* VSI type, e.g., LAN, FCoE, etc */
391 u16 vf_id; /* Virtual function ID for SRIOV VSIs */
393 struct i40e_tc_configuration tc_config;
394 struct i40e_aqc_vsi_properties_data info;
396 /* VSI BW limit (absolute across all TCs) */
397 u16 bw_limit; /* VSI BW Limit (0 = disabled) */
398 u8 bw_max_quanta; /* Max Quanta when BW limit is enabled */
400 /* Relative TC credits across VSIs */
401 u8 bw_ets_share_credits[I40E_MAX_TRAFFIC_CLASS];
402 /* TC BW limit credits within VSI */
403 u16 bw_ets_limit_credits[I40E_MAX_TRAFFIC_CLASS];
404 /* TC BW limit max quanta within VSI */
405 u8 bw_ets_max_quanta[I40E_MAX_TRAFFIC_CLASS];
407 struct i40e_pf *back; /* Backreference to associated PF */
408 u16 idx; /* index in pf->vsi[] */
409 u16 veb_idx; /* index of VEB parent */
410 struct kobject *kobj; /* sysfs object */
412 /* VSI specific handlers */
413 irqreturn_t (*irq_handler)(int irq, void *data);
414 } ____cacheline_internodealigned_in_smp;
416 struct i40e_netdev_priv {
417 struct i40e_vsi *vsi;
420 /* struct that defines an interrupt vector */
421 struct i40e_q_vector {
422 struct i40e_vsi *vsi;
424 u16 v_idx; /* index in the vsi->q_vector array. */
425 u16 reg_idx; /* register index of the interrupt */
427 struct napi_struct napi;
429 struct i40e_ring_container rx;
430 struct i40e_ring_container tx;
432 u8 num_ringpairs; /* total number of ring pairs in vector */
434 cpumask_t affinity_mask;
435 struct rcu_head rcu; /* to avoid race with update stats on free */
436 char name[IFNAMSIZ + 9];
437 } ____cacheline_internodealigned_in_smp;
441 struct list_head list;
446 * i40e_fw_version_str - format the FW and NVM version strings
447 * @hw: ptr to the hardware info
449 static inline char *i40e_fw_version_str(struct i40e_hw *hw)
453 snprintf(buf, sizeof(buf),
454 "f%d.%d a%d.%d n%02x.%02x e%08x",
455 hw->aq.fw_maj_ver, hw->aq.fw_min_ver,
456 hw->aq.api_maj_ver, hw->aq.api_min_ver,
457 (hw->nvm.version & I40E_NVM_VERSION_HI_MASK)
458 >> I40E_NVM_VERSION_HI_SHIFT,
459 (hw->nvm.version & I40E_NVM_VERSION_LO_MASK)
460 >> I40E_NVM_VERSION_LO_SHIFT,
467 * i40e_netdev_to_pf: Retrieve the PF struct for given netdev
468 * @netdev: the corresponding netdev
470 * Return the PF struct for the given netdev
472 static inline struct i40e_pf *i40e_netdev_to_pf(struct net_device *netdev)
474 struct i40e_netdev_priv *np = netdev_priv(netdev);
475 struct i40e_vsi *vsi = np->vsi;
480 static inline void i40e_vsi_setup_irqhandler(struct i40e_vsi *vsi,
481 irqreturn_t (*irq_handler)(int, void *))
483 vsi->irq_handler = irq_handler;
487 * i40e_rx_is_programming_status - check for programming status descriptor
488 * @qw: the first quad word of the program status descriptor
490 * The value of in the descriptor length field indicate if this
491 * is a programming status descriptor for flow director or FCoE
492 * by the value of I40E_RX_PROG_STATUS_DESC_LENGTH, otherwise
493 * it is a packet descriptor.
495 static inline bool i40e_rx_is_programming_status(u64 qw)
497 return I40E_RX_PROG_STATUS_DESC_LENGTH ==
498 (qw >> I40E_RX_PROG_STATUS_DESC_LENGTH_SHIFT);
501 /* needed by i40e_ethtool.c */
502 int i40e_up(struct i40e_vsi *vsi);
503 void i40e_down(struct i40e_vsi *vsi);
504 extern const char i40e_driver_name[];
505 extern const char i40e_driver_version_str[];
506 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags);
507 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags);
508 void i40e_update_stats(struct i40e_vsi *vsi);
509 void i40e_update_eth_stats(struct i40e_vsi *vsi);
510 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi);
511 int i40e_fetch_switch_configuration(struct i40e_pf *pf,
514 /* needed by i40e_main.c */
515 void i40e_add_fdir_filter(struct i40e_fdir_data fdir_data,
516 struct i40e_ring *tx_ring);
517 void i40e_add_remove_filter(struct i40e_fdir_data fdir_data,
518 struct i40e_ring *tx_ring);
519 void i40e_update_fdir_filter(struct i40e_fdir_data fdir_data,
520 struct i40e_ring *tx_ring);
521 int i40e_program_fdir_filter(struct i40e_fdir_data *fdir_data,
522 struct i40e_pf *pf, bool add);
524 void i40e_set_ethtool_ops(struct net_device *netdev);
525 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
526 u8 *macaddr, s16 vlan,
527 bool is_vf, bool is_netdev);
528 void i40e_del_filter(struct i40e_vsi *vsi, u8 *macaddr, s16 vlan,
529 bool is_vf, bool is_netdev);
530 int i40e_sync_vsi_filters(struct i40e_vsi *vsi);
531 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
532 u16 uplink, u32 param1);
533 int i40e_vsi_release(struct i40e_vsi *vsi);
534 struct i40e_vsi *i40e_vsi_lookup(struct i40e_pf *pf, enum i40e_vsi_type type,
535 struct i40e_vsi *start_vsi);
536 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count);
537 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags, u16 uplink_seid,
538 u16 downlink_seid, u8 enabled_tc);
539 void i40e_veb_release(struct i40e_veb *veb);
541 i40e_status i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid);
542 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi);
543 void i40e_vsi_reset_stats(struct i40e_vsi *vsi);
544 void i40e_pf_reset_stats(struct i40e_pf *pf);
545 #ifdef CONFIG_DEBUG_FS
546 void i40e_dbg_pf_init(struct i40e_pf *pf);
547 void i40e_dbg_pf_exit(struct i40e_pf *pf);
548 void i40e_dbg_init(void);
549 void i40e_dbg_exit(void);
551 static inline void i40e_dbg_pf_init(struct i40e_pf *pf) {}
552 static inline void i40e_dbg_pf_exit(struct i40e_pf *pf) {}
553 static inline void i40e_dbg_init(void) {}
554 static inline void i40e_dbg_exit(void) {}
555 #endif /* CONFIG_DEBUG_FS*/
556 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector);
557 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf);
558 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd);
559 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi);
560 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid);
561 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid);
562 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
563 bool is_vf, bool is_netdev);
564 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi);
565 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
566 bool is_vf, bool is_netdev);
567 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi);
569 #endif /* _I40E_H_ */