1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright(c) 2013 - 2019 Intel Corporation. */
7 #include <linux/types.h>
8 #include <linux/etherdevice.h>
9 #include <linux/cpumask.h>
10 #include <linux/rtnetlink.h>
11 #include <linux/if_vlan.h>
12 #include <linux/pci.h>
17 #define FM10K_MAX_JUMBO_FRAME_SIZE 15342 /* Maximum supported size 15K */
19 #define MAX_QUEUES FM10K_MAX_QUEUES_PF
21 #define FM10K_MIN_RXD 128
22 #define FM10K_MAX_RXD 4096
23 #define FM10K_DEFAULT_RXD 256
25 #define FM10K_MIN_TXD 128
26 #define FM10K_MAX_TXD 4096
27 #define FM10K_DEFAULT_TXD 256
28 #define FM10K_DEFAULT_TX_WORK 256
30 #define FM10K_RXBUFFER_256 256
31 #define FM10K_RX_HDR_LEN FM10K_RXBUFFER_256
32 #define FM10K_RXBUFFER_2048 2048
33 #define FM10K_RX_BUFSZ FM10K_RXBUFFER_2048
35 /* How many Rx Buffers do we bundle into one write to the hardware ? */
36 #define FM10K_RX_BUFFER_WRITE 16 /* Must be power of 2 */
38 #define FM10K_MAX_STATIONS 63
39 struct fm10k_l2_accel {
44 struct net_device *macvlan[];
47 enum fm10k_ring_state_t {
48 __FM10K_TX_DETECT_HANG,
49 __FM10K_HANG_CHECK_ARMED,
50 __FM10K_TX_XPS_INIT_DONE,
51 /* This must be last and is used to calculate BITMAP size */
52 __FM10K_TX_STATE_SIZE__,
55 #define check_for_tx_hang(ring) \
56 test_bit(__FM10K_TX_DETECT_HANG, (ring)->state)
57 #define set_check_for_tx_hang(ring) \
58 set_bit(__FM10K_TX_DETECT_HANG, (ring)->state)
59 #define clear_check_for_tx_hang(ring) \
60 clear_bit(__FM10K_TX_DETECT_HANG, (ring)->state)
62 struct fm10k_tx_buffer {
63 struct fm10k_tx_desc *next_to_watch;
65 unsigned int bytecount;
68 DEFINE_DMA_UNMAP_ADDR(dma);
69 DEFINE_DMA_UNMAP_LEN(len);
72 struct fm10k_rx_buffer {
78 struct fm10k_queue_stats {
83 struct fm10k_tx_queue_stats {
91 struct fm10k_rx_queue_stats {
104 struct fm10k_q_vector *q_vector;/* backpointer to host q_vector */
105 struct net_device *netdev; /* netdev ring belongs to */
106 struct device *dev; /* device for DMA mapping */
107 struct fm10k_l2_accel __rcu *l2_accel; /* L2 acceleration list */
108 void *desc; /* descriptor ring memory */
110 struct fm10k_tx_buffer *tx_buffer;
111 struct fm10k_rx_buffer *rx_buffer;
114 DECLARE_BITMAP(state, __FM10K_TX_STATE_SIZE__);
115 dma_addr_t dma; /* phys. address of descriptor ring */
116 unsigned int size; /* length in bytes */
118 u8 queue_index; /* needed for queue management */
119 u8 reg_idx; /* holds the special value that gets
120 * the hardware register offset
121 * associated with this ring, which is
122 * different for DCB and RSS modes
124 u8 qos_pc; /* priority class of queue */
125 u16 vid; /* default VLAN ID of queue */
126 u16 count; /* amount of descriptors */
132 struct fm10k_queue_stats stats;
133 struct u64_stats_sync syncp;
136 struct fm10k_tx_queue_stats tx_stats;
139 struct fm10k_rx_queue_stats rx_stats;
143 } ____cacheline_internodealigned_in_smp;
145 struct fm10k_ring_container {
146 struct fm10k_ring *ring; /* pointer to linked list of rings */
147 unsigned int total_bytes; /* total bytes processed this int */
148 unsigned int total_packets; /* total packets processed this int */
149 u16 work_limit; /* total work allowed per interrupt */
150 u16 itr; /* interrupt throttle rate value */
151 u8 itr_scale; /* ITR adjustment based on PCI speed */
152 u8 count; /* total number of rings in vector */
155 #define FM10K_ITR_MAX 0x0FFF /* maximum value for ITR */
156 #define FM10K_ITR_10K 100 /* 100us */
157 #define FM10K_ITR_20K 50 /* 50us */
158 #define FM10K_ITR_40K 25 /* 25us */
159 #define FM10K_ITR_ADAPTIVE 0x8000 /* adaptive interrupt moderation flag */
161 #define ITR_IS_ADAPTIVE(itr) (!!(itr & FM10K_ITR_ADAPTIVE))
163 #define FM10K_TX_ITR_DEFAULT FM10K_ITR_40K
164 #define FM10K_RX_ITR_DEFAULT FM10K_ITR_20K
165 #define FM10K_ITR_ENABLE (FM10K_ITR_AUTOMASK | FM10K_ITR_MASK_CLEAR)
167 static inline struct netdev_queue *txring_txq(const struct fm10k_ring *ring)
169 return &ring->netdev->_tx[ring->queue_index];
172 /* iterator for handling rings in ring container */
173 #define fm10k_for_each_ring(pos, head) \
174 for (pos = &(head).ring[(head).count]; (--pos) >= (head).ring;)
176 #define MAX_Q_VECTORS 256
177 #define MIN_Q_VECTORS 1
178 enum fm10k_non_q_vectors {
183 #define MIN_MSIX_COUNT(hw) (MIN_Q_VECTORS + NON_Q_VECTORS)
185 struct fm10k_q_vector {
186 struct fm10k_intfc *interface;
187 u32 __iomem *itr; /* pointer to ITR register for this vector */
188 u16 v_idx; /* index of q_vector within interface array */
189 struct fm10k_ring_container rx, tx;
191 struct napi_struct napi;
192 cpumask_t affinity_mask;
193 char name[IFNAMSIZ + 9];
195 #ifdef CONFIG_DEBUG_FS
196 struct dentry *dbg_q_vector;
197 #endif /* CONFIG_DEBUG_FS */
198 struct rcu_head rcu; /* to avoid race with update stats on free */
200 /* for dynamic allocation of rings associated with this q_vector */
201 struct fm10k_ring ring[] ____cacheline_internodealigned_in_smp;
204 enum fm10k_ring_f_enum {
207 RING_F_ARRAY_SIZE /* must be last in enum set */
210 struct fm10k_ring_feature {
211 u16 limit; /* upper limit on feature indices */
212 u16 indices; /* current value of indices */
213 u16 mask; /* Mask used for feature to ring mapping */
214 u16 offset; /* offset to start of feature */
217 struct fm10k_iov_data {
218 unsigned int num_vfs;
219 unsigned int next_vf_mbx;
221 struct fm10k_vf_info vf_info[];
224 enum fm10k_macvlan_request_type {
225 FM10K_UC_MAC_REQUEST,
226 FM10K_MC_MAC_REQUEST,
230 struct fm10k_macvlan_request {
231 enum fm10k_macvlan_request_type type;
232 struct list_head list;
234 struct fm10k_mac_request {
239 struct fm10k_vlan_request {
247 /* one work queue for entire driver */
248 extern struct workqueue_struct *fm10k_workqueue;
250 /* The following enumeration contains flags which indicate or enable modified
251 * driver behaviors. To avoid race conditions, the flags are stored in
252 * a BITMAP in the fm10k_intfc structure. The BITMAP should be accessed using
253 * atomic *_bit() operations.
256 FM10K_FLAG_RESET_REQUESTED,
257 FM10K_FLAG_RSS_FIELD_IPV4_UDP,
258 FM10K_FLAG_RSS_FIELD_IPV6_UDP,
259 FM10K_FLAG_SWPRI_CONFIG,
260 /* __FM10K_FLAGS_SIZE__ is used to calculate the size of
261 * interface->flags and must be the last value in this
269 __FM10K_RESET_DETACHED,
270 __FM10K_RESET_SUSPENDED,
272 __FM10K_SERVICE_SCHED,
273 __FM10K_SERVICE_REQUEST,
274 __FM10K_SERVICE_DISABLE,
275 __FM10K_MACVLAN_SCHED,
276 __FM10K_MACVLAN_REQUEST,
277 __FM10K_MACVLAN_DISABLE,
279 __FM10K_UPDATING_STATS,
280 /* This value must be last and determines the BITMAP size */
281 __FM10K_STATE_SIZE__,
285 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
286 struct net_device *netdev;
287 struct fm10k_l2_accel *l2_accel; /* pointer to L2 acceleration list */
288 struct pci_dev *pdev;
289 DECLARE_BITMAP(state, __FM10K_STATE_SIZE__);
291 /* Access flag values using atomic *_bit() operations */
292 DECLARE_BITMAP(flags, __FM10K_FLAGS_SIZE__);
296 /* Tx fast path data */
300 /* Rx fast path data */
305 struct fm10k_ring *tx_ring[MAX_QUEUES] ____cacheline_aligned_in_smp;
321 /* Debug Statistics */
325 u64 rx_switch_errors;
329 u64 rx_length_errors;
331 u32 tx_timeout_count;
334 struct fm10k_ring *rx_ring[MAX_QUEUES];
336 /* Queueing vectors */
337 struct fm10k_q_vector *q_vector[MAX_Q_VECTORS];
338 struct msix_entry *msix_entries;
339 int num_q_vectors; /* current number of q_vectors for device */
340 struct fm10k_ring_feature ring_feature[RING_F_ARRAY_SIZE];
342 /* SR-IOV information management structure */
343 struct fm10k_iov_data *iov_data;
345 struct fm10k_hw_stats stats;
349 u32 __iomem *uc_addr;
350 u32 __iomem *sw_addr;
354 struct timer_list service_timer;
355 struct work_struct service_task;
356 unsigned long next_stats_update;
357 unsigned long next_tx_hang_check;
358 unsigned long last_reset;
359 unsigned long link_down_event;
361 bool lport_map_failed;
363 u32 reta[FM10K_RETA_SIZE];
364 u32 rssrk[FM10K_RSSRK_SIZE];
366 /* UDP encapsulation port tracking information */
370 /* MAC/VLAN update queue */
371 struct list_head macvlan_requests;
372 struct delayed_work macvlan_task;
373 /* MAC/VLAN update queue lock */
374 spinlock_t macvlan_lock;
376 #ifdef CONFIG_DEBUG_FS
377 struct dentry *dbg_intfc;
378 #endif /* CONFIG_DEBUG_FS */
385 /* GLORT resources in use by PF */
389 /* VLAN ID for updating multicast/unicast lists */
393 static inline void fm10k_mbx_lock(struct fm10k_intfc *interface)
395 spin_lock(&interface->mbx_lock);
398 static inline void fm10k_mbx_unlock(struct fm10k_intfc *interface)
400 spin_unlock(&interface->mbx_lock);
403 static inline int fm10k_mbx_trylock(struct fm10k_intfc *interface)
405 return spin_trylock(&interface->mbx_lock);
408 /* fm10k_test_staterr - test bits in Rx descriptor status and error fields */
409 static inline __le32 fm10k_test_staterr(union fm10k_rx_desc *rx_desc,
410 const u32 stat_err_bits)
412 return rx_desc->d.staterr & cpu_to_le32(stat_err_bits);
415 /* fm10k_desc_unused - calculate if we have unused descriptors */
416 static inline u16 fm10k_desc_unused(struct fm10k_ring *ring)
418 s16 unused = ring->next_to_clean - ring->next_to_use - 1;
420 return likely(unused < 0) ? unused + ring->count : unused;
423 #define FM10K_TX_DESC(R, i) \
424 (&(((struct fm10k_tx_desc *)((R)->desc))[i]))
425 #define FM10K_RX_DESC(R, i) \
426 (&(((union fm10k_rx_desc *)((R)->desc))[i]))
428 #define FM10K_MAX_TXD_PWR 14
429 #define FM10K_MAX_DATA_PER_TXD (1u << FM10K_MAX_TXD_PWR)
431 /* Tx Descriptors needed, worst case */
432 #define TXD_USE_COUNT(S) DIV_ROUND_UP((S), FM10K_MAX_DATA_PER_TXD)
433 #define DESC_NEEDED (MAX_SKB_FRAGS + 4)
435 enum fm10k_tx_flags {
436 /* Tx offload flags */
437 FM10K_TX_FLAGS_CSUM = 0x01,
440 /* This structure is stored as little endian values as that is the native
441 * format of the Rx descriptor. The ordering of these fields is reversed
442 * from the actual ftag header to allow for a single bswap to take care
443 * of placing all of the values in network order
445 union fm10k_ftag_info {
448 /* dglort and sglort combined into a single 32bit desc read */
450 /* upper 16 bits of VLAN are reserved 0 for swpri_type_user */
457 __le16 swpri_type_user;
464 unsigned long ts_tx_timeout;
466 union fm10k_ftag_info fi;
469 #define FM10K_CB(skb) ((struct fm10k_cb *)(skb)->cb)
472 extern char fm10k_driver_name[];
473 int fm10k_init_queueing_scheme(struct fm10k_intfc *interface);
474 void fm10k_clear_queueing_scheme(struct fm10k_intfc *interface);
475 __be16 fm10k_tx_encap_offload(struct sk_buff *skb);
476 netdev_tx_t fm10k_xmit_frame_ring(struct sk_buff *skb,
477 struct fm10k_ring *tx_ring);
478 void fm10k_tx_timeout_reset(struct fm10k_intfc *interface);
479 u64 fm10k_get_tx_pending(struct fm10k_ring *ring, bool in_sw);
480 bool fm10k_check_tx_hang(struct fm10k_ring *tx_ring);
481 void fm10k_alloc_rx_buffers(struct fm10k_ring *rx_ring, u16 cleaned_count);
484 void fm10k_mbx_free_irq(struct fm10k_intfc *);
485 int fm10k_mbx_request_irq(struct fm10k_intfc *);
486 void fm10k_qv_free_irq(struct fm10k_intfc *interface);
487 int fm10k_qv_request_irq(struct fm10k_intfc *interface);
488 int fm10k_register_pci_driver(void);
489 void fm10k_unregister_pci_driver(void);
490 void fm10k_up(struct fm10k_intfc *interface);
491 void fm10k_down(struct fm10k_intfc *interface);
492 void fm10k_update_stats(struct fm10k_intfc *interface);
493 void fm10k_service_event_schedule(struct fm10k_intfc *interface);
494 void fm10k_macvlan_schedule(struct fm10k_intfc *interface);
495 void fm10k_update_rx_drop_en(struct fm10k_intfc *interface);
498 struct net_device *fm10k_alloc_netdev(const struct fm10k_info *info);
499 int fm10k_setup_rx_resources(struct fm10k_ring *);
500 int fm10k_setup_tx_resources(struct fm10k_ring *);
501 void fm10k_free_rx_resources(struct fm10k_ring *);
502 void fm10k_free_tx_resources(struct fm10k_ring *);
503 void fm10k_clean_all_rx_rings(struct fm10k_intfc *);
504 void fm10k_clean_all_tx_rings(struct fm10k_intfc *);
505 void fm10k_unmap_and_free_tx_resource(struct fm10k_ring *,
506 struct fm10k_tx_buffer *);
507 void fm10k_restore_rx_state(struct fm10k_intfc *);
508 void fm10k_reset_rx_state(struct fm10k_intfc *);
509 int fm10k_setup_tc(struct net_device *dev, u8 tc);
510 int fm10k_open(struct net_device *netdev);
511 int fm10k_close(struct net_device *netdev);
512 int fm10k_queue_vlan_request(struct fm10k_intfc *interface, u32 vid,
514 int fm10k_queue_mac_request(struct fm10k_intfc *interface, u16 glort,
515 const unsigned char *addr, u16 vid, bool set);
516 void fm10k_clear_macvlan_queue(struct fm10k_intfc *interface,
517 u16 glort, bool vlans);
520 void fm10k_set_ethtool_ops(struct net_device *dev);
521 void fm10k_write_reta(struct fm10k_intfc *interface, const u32 *indir);
524 s32 fm10k_iov_event(struct fm10k_intfc *interface);
525 s32 fm10k_iov_mbx(struct fm10k_intfc *interface);
526 void fm10k_iov_suspend(struct pci_dev *pdev);
527 int fm10k_iov_resume(struct pci_dev *pdev);
528 void fm10k_iov_disable(struct pci_dev *pdev);
529 int fm10k_iov_configure(struct pci_dev *pdev, int num_vfs);
530 void fm10k_iov_update_stats(struct fm10k_intfc *interface);
531 s32 fm10k_iov_update_pvid(struct fm10k_intfc *interface, u16 glort, u16 pvid);
532 int fm10k_ndo_set_vf_mac(struct net_device *netdev, int vf_idx, u8 *mac);
533 int fm10k_ndo_set_vf_vlan(struct net_device *netdev,
534 int vf_idx, u16 vid, u8 qos, __be16 vlan_proto);
535 int fm10k_ndo_set_vf_bw(struct net_device *netdev, int vf_idx,
536 int __always_unused min_rate, int max_rate);
537 int fm10k_ndo_get_vf_config(struct net_device *netdev,
538 int vf_idx, struct ifla_vf_info *ivi);
539 int fm10k_ndo_get_vf_stats(struct net_device *netdev,
540 int vf_idx, struct ifla_vf_stats *stats);
543 #ifdef CONFIG_DEBUG_FS
544 void fm10k_dbg_q_vector_init(struct fm10k_q_vector *q_vector);
545 void fm10k_dbg_q_vector_exit(struct fm10k_q_vector *q_vector);
546 void fm10k_dbg_intfc_init(struct fm10k_intfc *interface);
547 void fm10k_dbg_intfc_exit(struct fm10k_intfc *interface);
548 void fm10k_dbg_init(void);
549 void fm10k_dbg_exit(void);
551 static inline void fm10k_dbg_q_vector_init(struct fm10k_q_vector *q_vector) {}
552 static inline void fm10k_dbg_q_vector_exit(struct fm10k_q_vector *q_vector) {}
553 static inline void fm10k_dbg_intfc_init(struct fm10k_intfc *interface) {}
554 static inline void fm10k_dbg_intfc_exit(struct fm10k_intfc *interface) {}
555 static inline void fm10k_dbg_init(void) {}
556 static inline void fm10k_dbg_exit(void) {}
557 #endif /* CONFIG_DEBUG_FS */
561 void fm10k_dcbnl_set_ops(struct net_device *dev);
563 static inline void fm10k_dcbnl_set_ops(struct net_device *dev) {}
565 #endif /* _FM10K_H_ */