1 /* QLogic qede NIC Driver
2 * Copyright (c) 2015-2017 QLogic Corporation
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and /or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 #include <linux/compiler.h>
35 #include <linux/version.h>
36 #include <linux/workqueue.h>
37 #include <linux/netdevice.h>
38 #include <linux/interrupt.h>
39 #include <linux/bitmap.h>
40 #include <linux/kernel.h>
41 #include <linux/mutex.h>
42 #include <linux/bpf.h>
43 #include <linux/qed/qede_rdma.h>
45 #ifdef CONFIG_RFS_ACCEL
46 #include <linux/cpu_rmap.h>
48 #include <linux/qed/common_hsi.h>
49 #include <linux/qed/eth_common.h>
50 #include <linux/qed/qed_if.h>
51 #include <linux/qed/qed_chain.h>
52 #include <linux/qed/qed_eth_if.h>
54 #define QEDE_MAJOR_VERSION 8
55 #define QEDE_MINOR_VERSION 10
56 #define QEDE_REVISION_VERSION 10
57 #define QEDE_ENGINEERING_VERSION 21
58 #define DRV_MODULE_VERSION __stringify(QEDE_MAJOR_VERSION) "." \
59 __stringify(QEDE_MINOR_VERSION) "." \
60 __stringify(QEDE_REVISION_VERSION) "." \
61 __stringify(QEDE_ENGINEERING_VERSION)
63 #define DRV_MODULE_SYM qede
65 struct qede_stats_common {
67 u64 packet_too_big_discard;
75 u64 mftag_filter_discards;
76 u64 mac_filter_discards;
86 u64 coalesced_aborts_num;
87 u64 non_coalesced_pkts;
91 u64 rx_64_byte_packets;
92 u64 rx_65_to_127_byte_packets;
93 u64 rx_128_to_255_byte_packets;
94 u64 rx_256_to_511_byte_packets;
95 u64 rx_512_to_1023_byte_packets;
96 u64 rx_1024_to_1518_byte_packets;
98 u64 rx_mac_crtl_frames;
102 u64 rx_carrier_errors;
103 u64 rx_oversize_packets;
105 u64 rx_undersize_packets;
107 u64 tx_64_byte_packets;
108 u64 tx_65_to_127_byte_packets;
109 u64 tx_128_to_255_byte_packets;
110 u64 tx_256_to_511_byte_packets;
111 u64 tx_512_to_1023_byte_packets;
112 u64 tx_1024_to_1518_byte_packets;
117 u64 tx_mac_ctrl_frames;
120 struct qede_stats_bb {
121 u64 rx_1519_to_1522_byte_packets;
122 u64 rx_1519_to_2047_byte_packets;
123 u64 rx_2048_to_4095_byte_packets;
124 u64 rx_4096_to_9216_byte_packets;
125 u64 rx_9217_to_16383_byte_packets;
126 u64 tx_1519_to_2047_byte_packets;
127 u64 tx_2048_to_4095_byte_packets;
128 u64 tx_4096_to_9216_byte_packets;
129 u64 tx_9217_to_16383_byte_packets;
130 u64 tx_lpi_entry_count;
131 u64 tx_total_collisions;
134 struct qede_stats_ah {
135 u64 rx_1519_to_max_byte_packets;
136 u64 tx_1519_to_max_byte_packets;
140 struct qede_stats_common common;
143 struct qede_stats_bb bb;
144 struct qede_stats_ah ah;
149 struct list_head list;
154 struct qede_rdma_dev {
155 struct qedr_dev *qedr_dev;
156 struct list_head entry;
157 struct list_head rdma_event_list;
158 struct workqueue_struct *rdma_wq;
164 struct qed_dev *cdev;
165 struct net_device *ndev;
166 struct pci_dev *pdev;
172 #define QEDE_FLAG_IS_VF BIT(0)
173 #define IS_VF(edev) (!!((edev)->flags & QEDE_FLAG_IS_VF))
174 #define QEDE_TX_TIMESTAMPING_EN BIT(1)
175 #define QEDE_FLAGS_PTP_TX_IN_PRORGESS BIT(2)
177 const struct qed_eth_ops *ops;
178 struct qede_ptp *ptp;
180 struct qed_dev_eth_info dev_info;
181 #define QEDE_MAX_RSS_CNT(edev) ((edev)->dev_info.num_queues)
182 #define QEDE_MAX_TSS_CNT(edev) ((edev)->dev_info.num_queues)
183 #define QEDE_IS_BB(edev) \
184 ((edev)->dev_info.common.dev_type == QED_DEV_TYPE_BB)
185 #define QEDE_IS_AH(edev) \
186 ((edev)->dev_info.common.dev_type == QED_DEV_TYPE_AH)
188 struct qede_fastpath *fp_array;
195 #define QEDE_QUEUE_CNT(edev) ((edev)->num_queues)
196 #define QEDE_RSS_COUNT(edev) ((edev)->num_queues - (edev)->fp_num_tx)
197 #define QEDE_RX_QUEUE_IDX(edev, i) (i)
198 #define QEDE_TSS_COUNT(edev) ((edev)->num_queues - (edev)->fp_num_rx)
200 struct qed_int_info int_info;
202 /* Smaller private varaiant of the RTNL lock */
203 struct mutex qede_lock;
204 u32 state; /* Protected by qede_lock */
208 /* L2 header size + 2*VLANs (8 bytes) + LLC SNAP (8 bytes) */
209 #define ETH_OVERHEAD (ETH_HLEN + 8 + 8)
210 /* Max supported alignment is 256 (8 shift)
211 * minimal alignment shift 6 is optimal for 57xxx HW performance
213 #define QEDE_RX_ALIGN_SHIFT max(6, min(8, L1_CACHE_SHIFT))
214 /* We assume skb_build() uses sizeof(struct skb_shared_info) bytes
215 * at the end of skb->data, to avoid wasting a full cache line.
216 * This reduces memory use (skb->truesize).
218 #define QEDE_FW_RX_ALIGN_END \
219 max_t(u64, 1UL << QEDE_RX_ALIGN_SHIFT, \
220 SKB_DATA_ALIGN(sizeof(struct skb_shared_info)))
222 struct qede_stats stats;
223 #define QEDE_RSS_INDIR_INITED BIT(0)
224 #define QEDE_RSS_KEY_INITED BIT(1)
225 #define QEDE_RSS_CAPS_INITED BIT(2)
226 u32 rss_params_inited; /* bit-field to track initialized rss params */
227 u16 rss_ind_table[128];
231 u16 q_num_rx_buffers; /* Must be a power of two */
232 u16 q_num_tx_buffers; /* Must be a power of two */
235 struct list_head vlan_list;
236 u16 configured_vlans;
237 u16 non_configured_vlans;
238 bool accept_any_vlan;
239 struct delayed_work sp_task;
240 unsigned long sp_flags;
244 #ifdef CONFIG_RFS_ACCEL
245 struct qede_arfs *arfs;
249 struct qede_rdma_dev rdma_info;
251 struct bpf_prog *xdp_prog;
259 #define HILO_U64(hi, lo) ((((u64)(hi)) << 32) + (lo))
262 #define MAX_NUM_PRI 8
264 /* The driver supports the new build_skb() API:
265 * RX ring buffer contains pointer to kmalloc() data only,
266 * skb are built only after the frame was DMA-ed.
271 unsigned int page_offset;
274 enum qede_agg_state {
275 QEDE_AGG_STATE_NONE = 0,
276 QEDE_AGG_STATE_START = 1,
277 QEDE_AGG_STATE_ERROR = 2
280 struct qede_agg_info {
281 /* rx_buf is a data buffer that can be placed / consumed from rx bd
282 * chain. It has two purposes: We will preallocate the data buffer
283 * for each aggregation when we open the interface and will place this
284 * buffer on the rx-bd-ring when we receive TPA_START. We don't want
285 * to be in a state where allocation fails, as we can't reuse the
286 * consumer buffer in the rx-chain since FW may still be writing to it
287 * (since header needs to be modified for TPA).
288 * The second purpose is to keep a pointer to the bd buffer during
291 struct sw_rx_data buffer;
292 dma_addr_t buffer_mapping;
296 /* We need some structs from the start cookie until termination */
298 u16 start_cqe_bd_len;
299 u8 start_cqe_placement_offset;
307 struct qede_rx_queue {
309 void __iomem *hw_rxq_prod_addr;
311 /* Required for the allocation of replacement buffers */
314 struct bpf_prog *xdp_prog;
323 /* Used once per each NAPI run */
331 struct sw_rx_data *sw_rx_ring;
332 struct qed_chain rx_bd_ring;
333 struct qed_chain rx_comp_ring ____cacheline_aligned;
336 struct qede_agg_info tpa_info[ETH_TPA_MAX_AGGS_NUM];
338 /* Used once per each NAPI run */
351 struct eth_db_data data;
358 /* Set on the first BD descriptor when there is a split BD */
359 #define QEDE_TSO_SPLIT_BD BIT(0)
367 struct qede_tx_queue {
372 u16 num_tx_buffers; /* Slowpath only */
379 /* Needed for the mapping of packets */
382 void __iomem *doorbell_addr;
384 int index; /* Slowpath only */
385 #define QEDE_TXQ_XDP_TO_IDX(edev, txq) ((txq)->index - \
386 QEDE_MAX_TSS_CNT(edev))
387 #define QEDE_TXQ_IDX_TO_XDP(edev, idx) ((idx) + QEDE_MAX_TSS_CNT(edev))
389 /* Regular Tx requires skb + metadata for release purpose,
390 * while XDP requires the pages and the mapped address.
393 struct sw_tx_bd *skbs;
394 struct sw_tx_xdp *xdp;
397 struct qed_chain tx_pbl;
399 /* Slowpath; Should be kept in end [unless missing padding] */
403 #define BD_UNMAP_ADDR(bd) HILO_U64(le32_to_cpu((bd)->addr.hi), \
404 le32_to_cpu((bd)->addr.lo))
405 #define BD_SET_UNMAP_ADDR_LEN(bd, maddr, len) \
407 (bd)->addr.hi = cpu_to_le32(upper_32_bits(maddr)); \
408 (bd)->addr.lo = cpu_to_le32(lower_32_bits(maddr)); \
409 (bd)->nbytes = cpu_to_le16(len); \
411 #define BD_UNMAP_LEN(bd) (le16_to_cpu((bd)->nbytes))
413 struct qede_fastpath {
414 struct qede_dev *edev;
415 #define QEDE_FASTPATH_TX BIT(0)
416 #define QEDE_FASTPATH_RX BIT(1)
417 #define QEDE_FASTPATH_XDP BIT(2)
418 #define QEDE_FASTPATH_COMBINED (QEDE_FASTPATH_TX | QEDE_FASTPATH_RX)
422 struct napi_struct napi;
423 struct qed_sb_info *sb_info;
424 struct qede_rx_queue *rxq;
425 struct qede_tx_queue *txq;
426 struct qede_tx_queue *xdp_tx;
428 #define VEC_NAME_SIZE (sizeof(((struct net_device *)0)->name) + 8)
429 char name[VEC_NAME_SIZE];
432 /* Debug print definitions */
433 #define DP_NAME(edev) ((edev)->ndev->name)
436 #define XMIT_L4_CSUM BIT(0)
437 #define XMIT_LSO BIT(1)
438 #define XMIT_ENC BIT(2)
439 #define XMIT_ENC_GSO_L4_CSUM BIT(3)
441 #define QEDE_CSUM_ERROR BIT(0)
442 #define QEDE_CSUM_UNNECESSARY BIT(1)
443 #define QEDE_TUNN_CSUM_UNNECESSARY BIT(2)
445 #define QEDE_SP_RX_MODE 1
447 #ifdef CONFIG_RFS_ACCEL
448 int qede_rx_flow_steer(struct net_device *dev, const struct sk_buff *skb,
449 u16 rxq_index, u32 flow_id);
450 void qede_process_arfs_filters(struct qede_dev *edev, bool free_fltr);
451 void qede_poll_for_freeing_arfs_filters(struct qede_dev *edev);
452 void qede_arfs_filter_op(void *dev, void *filter, u8 fw_rc);
453 void qede_free_arfs(struct qede_dev *edev);
454 int qede_alloc_arfs(struct qede_dev *edev);
456 #define QEDE_SP_ARFS_CONFIG 4
457 #define QEDE_SP_TASK_POLL_DELAY (5 * HZ)
458 #define QEDE_RFS_MAX_FLTR 256
461 struct qede_reload_args {
462 void (*func)(struct qede_dev *edev, struct qede_reload_args *args);
464 netdev_features_t features;
465 struct bpf_prog *new_prog;
470 /* Datapath functions definition */
471 netdev_tx_t qede_start_xmit(struct sk_buff *skb, struct net_device *ndev);
472 netdev_features_t qede_features_check(struct sk_buff *skb,
473 struct net_device *dev,
474 netdev_features_t features);
475 void qede_tx_log_print(struct qede_dev *edev, struct qede_fastpath *fp);
476 int qede_alloc_rx_buffer(struct qede_rx_queue *rxq, bool allow_lazy);
477 int qede_free_tx_pkt(struct qede_dev *edev,
478 struct qede_tx_queue *txq, int *len);
479 int qede_poll(struct napi_struct *napi, int budget);
480 irqreturn_t qede_msix_fp_int(int irq, void *fp_cookie);
482 /* Filtering function definitions */
483 void qede_force_mac(void *dev, u8 *mac, bool forced);
484 void qede_udp_ports_update(void *dev, u16 vxlan_port, u16 geneve_port);
485 int qede_set_mac_addr(struct net_device *ndev, void *p);
487 int qede_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid);
488 int qede_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid);
489 void qede_vlan_mark_nonconfigured(struct qede_dev *edev);
490 int qede_configure_vlan_filters(struct qede_dev *edev);
492 int qede_set_features(struct net_device *dev, netdev_features_t features);
493 void qede_set_rx_mode(struct net_device *ndev);
494 void qede_config_rx_mode(struct net_device *ndev);
495 void qede_fill_rss_params(struct qede_dev *edev,
496 struct qed_update_vport_rss_params *rss, u8 *update);
498 void qede_udp_tunnel_add(struct net_device *dev, struct udp_tunnel_info *ti);
499 void qede_udp_tunnel_del(struct net_device *dev, struct udp_tunnel_info *ti);
501 int qede_xdp(struct net_device *dev, struct netdev_xdp *xdp);
504 void qede_set_dcbnl_ops(struct net_device *ndev);
507 void qede_config_debug(uint debug, u32 *p_dp_module, u8 *p_dp_level);
508 void qede_set_ethtool_ops(struct net_device *netdev);
509 void qede_reload(struct qede_dev *edev,
510 struct qede_reload_args *args, bool is_locked);
511 int qede_change_mtu(struct net_device *dev, int new_mtu);
512 void qede_fill_by_demand_stats(struct qede_dev *edev);
513 void __qede_lock(struct qede_dev *edev);
514 void __qede_unlock(struct qede_dev *edev);
515 bool qede_has_rx_work(struct qede_rx_queue *rxq);
516 int qede_txq_has_work(struct qede_tx_queue *txq);
517 void qede_recycle_rx_bd_ring(struct qede_rx_queue *rxq, u8 count);
518 void qede_update_rx_prod(struct qede_dev *edev, struct qede_rx_queue *rxq);
520 #define RX_RING_SIZE_POW 13
521 #define RX_RING_SIZE ((u16)BIT(RX_RING_SIZE_POW))
522 #define NUM_RX_BDS_MAX (RX_RING_SIZE - 1)
523 #define NUM_RX_BDS_MIN 128
524 #define NUM_RX_BDS_DEF ((u16)BIT(10) - 1)
526 #define TX_RING_SIZE_POW 13
527 #define TX_RING_SIZE ((u16)BIT(TX_RING_SIZE_POW))
528 #define NUM_TX_BDS_MAX (TX_RING_SIZE - 1)
529 #define NUM_TX_BDS_MIN 128
530 #define NUM_TX_BDS_DEF NUM_TX_BDS_MAX
532 #define QEDE_MIN_PKT_LEN 64
533 #define QEDE_RX_HDR_SIZE 256
534 #define QEDE_MAX_JUMBO_PACKET_SIZE 9600
535 #define for_each_queue(i) for (i = 0; i < edev->num_queues; i++)
537 #endif /* _QEDE_H_ */