1 /* SPDX-License-Identifier: GPL-2.0+ */
2 // Copyright (c) 2016-2017 Hisilicon Limited.
8 #include <linux/if_vlan.h>
9 #include <net/page_pool.h>
14 HNS3_NIC_STATE_TESTING,
15 HNS3_NIC_STATE_RESETTING,
16 HNS3_NIC_STATE_INITED,
18 HNS3_NIC_STATE_DISABLED,
19 HNS3_NIC_STATE_REMOVING,
20 HNS3_NIC_STATE_SERVICE_INITED,
21 HNS3_NIC_STATE_SERVICE_SCHED,
22 HNS3_NIC_STATE2_RESET_REQUESTED,
23 HNS3_NIC_STATE_HW_TX_CSUM_ENABLE,
24 HNS3_NIC_STATE_RXD_ADV_LAYOUT_ENABLE,
28 #define HNS3_RING_RX_RING_BASEADDR_L_REG 0x00000
29 #define HNS3_RING_RX_RING_BASEADDR_H_REG 0x00004
30 #define HNS3_RING_RX_RING_BD_NUM_REG 0x00008
31 #define HNS3_RING_RX_RING_BD_LEN_REG 0x0000C
32 #define HNS3_RING_RX_RING_TAIL_REG 0x00018
33 #define HNS3_RING_RX_RING_HEAD_REG 0x0001C
34 #define HNS3_RING_RX_RING_FBDNUM_REG 0x00020
35 #define HNS3_RING_RX_RING_PKTNUM_RECORD_REG 0x0002C
37 #define HNS3_RING_TX_RING_BASEADDR_L_REG 0x00040
38 #define HNS3_RING_TX_RING_BASEADDR_H_REG 0x00044
39 #define HNS3_RING_TX_RING_BD_NUM_REG 0x00048
40 #define HNS3_RING_TX_RING_TC_REG 0x00050
41 #define HNS3_RING_TX_RING_TAIL_REG 0x00058
42 #define HNS3_RING_TX_RING_HEAD_REG 0x0005C
43 #define HNS3_RING_TX_RING_FBDNUM_REG 0x00060
44 #define HNS3_RING_TX_RING_OFFSET_REG 0x00064
45 #define HNS3_RING_TX_RING_EBDNUM_REG 0x00068
46 #define HNS3_RING_TX_RING_PKTNUM_RECORD_REG 0x0006C
47 #define HNS3_RING_TX_RING_EBD_OFFSET_REG 0x00070
48 #define HNS3_RING_TX_RING_BD_ERR_REG 0x00074
49 #define HNS3_RING_EN_REG 0x00090
50 #define HNS3_RING_RX_EN_REG 0x00098
51 #define HNS3_RING_TX_EN_REG 0x000D4
53 #define HNS3_RX_HEAD_SIZE 256
55 #define HNS3_TX_TIMEOUT (5 * HZ)
56 #define HNS3_RING_NAME_LEN 16
57 #define HNS3_BUFFER_SIZE_2048 2048
58 #define HNS3_RING_MAX_PENDING 32760
59 #define HNS3_RING_MIN_PENDING 72
60 #define HNS3_RING_BD_MULTIPLE 8
61 /* max frame size of mac */
62 #define HNS3_MAX_MTU(max_frm_size) \
63 ((max_frm_size) - (ETH_HLEN + ETH_FCS_LEN + 2 * VLAN_HLEN))
65 #define HNS3_BD_SIZE_512_TYPE 0
66 #define HNS3_BD_SIZE_1024_TYPE 1
67 #define HNS3_BD_SIZE_2048_TYPE 2
68 #define HNS3_BD_SIZE_4096_TYPE 3
70 #define HNS3_RX_FLAG_VLAN_PRESENT 0x1
71 #define HNS3_RX_FLAG_L3ID_IPV4 0x0
72 #define HNS3_RX_FLAG_L3ID_IPV6 0x1
73 #define HNS3_RX_FLAG_L4ID_UDP 0x0
74 #define HNS3_RX_FLAG_L4ID_TCP 0x1
76 #define HNS3_RXD_DMAC_S 0
77 #define HNS3_RXD_DMAC_M (0x3 << HNS3_RXD_DMAC_S)
78 #define HNS3_RXD_VLAN_S 2
79 #define HNS3_RXD_VLAN_M (0x3 << HNS3_RXD_VLAN_S)
80 #define HNS3_RXD_L3ID_S 4
81 #define HNS3_RXD_L3ID_M (0xf << HNS3_RXD_L3ID_S)
82 #define HNS3_RXD_L4ID_S 8
83 #define HNS3_RXD_L4ID_M (0xf << HNS3_RXD_L4ID_S)
84 #define HNS3_RXD_FRAG_B 12
85 #define HNS3_RXD_STRP_TAGP_S 13
86 #define HNS3_RXD_STRP_TAGP_M (0x3 << HNS3_RXD_STRP_TAGP_S)
88 #define HNS3_RXD_L2E_B 16
89 #define HNS3_RXD_L3E_B 17
90 #define HNS3_RXD_L4E_B 18
91 #define HNS3_RXD_TRUNCAT_B 19
92 #define HNS3_RXD_HOI_B 20
93 #define HNS3_RXD_DOI_B 21
94 #define HNS3_RXD_OL3E_B 22
95 #define HNS3_RXD_OL4E_B 23
96 #define HNS3_RXD_GRO_COUNT_S 24
97 #define HNS3_RXD_GRO_COUNT_M (0x3f << HNS3_RXD_GRO_COUNT_S)
98 #define HNS3_RXD_GRO_FIXID_B 30
99 #define HNS3_RXD_GRO_ECN_B 31
101 #define HNS3_RXD_ODMAC_S 0
102 #define HNS3_RXD_ODMAC_M (0x3 << HNS3_RXD_ODMAC_S)
103 #define HNS3_RXD_OVLAN_S 2
104 #define HNS3_RXD_OVLAN_M (0x3 << HNS3_RXD_OVLAN_S)
105 #define HNS3_RXD_OL3ID_S 4
106 #define HNS3_RXD_OL3ID_M (0xf << HNS3_RXD_OL3ID_S)
107 #define HNS3_RXD_OL4ID_S 8
108 #define HNS3_RXD_OL4ID_M (0xf << HNS3_RXD_OL4ID_S)
109 #define HNS3_RXD_FBHI_S 12
110 #define HNS3_RXD_FBHI_M (0x3 << HNS3_RXD_FBHI_S)
111 #define HNS3_RXD_FBLI_S 14
112 #define HNS3_RXD_FBLI_M (0x3 << HNS3_RXD_FBLI_S)
114 #define HNS3_RXD_PTYPE_S 4
115 #define HNS3_RXD_PTYPE_M GENMASK(11, 4)
117 #define HNS3_RXD_BDTYPE_S 0
118 #define HNS3_RXD_BDTYPE_M (0xf << HNS3_RXD_BDTYPE_S)
119 #define HNS3_RXD_VLD_B 4
120 #define HNS3_RXD_UDP0_B 5
121 #define HNS3_RXD_EXTEND_B 7
122 #define HNS3_RXD_FE_B 8
123 #define HNS3_RXD_LUM_B 9
124 #define HNS3_RXD_CRCP_B 10
125 #define HNS3_RXD_L3L4P_B 11
126 #define HNS3_RXD_TSIDX_S 12
127 #define HNS3_RXD_TSIDX_M (0x3 << HNS3_RXD_TSIDX_S)
128 #define HNS3_RXD_TS_VLD_B 14
129 #define HNS3_RXD_LKBK_B 15
130 #define HNS3_RXD_GRO_SIZE_S 16
131 #define HNS3_RXD_GRO_SIZE_M (0x3fff << HNS3_RXD_GRO_SIZE_S)
133 #define HNS3_TXD_L3T_S 0
134 #define HNS3_TXD_L3T_M (0x3 << HNS3_TXD_L3T_S)
135 #define HNS3_TXD_L4T_S 2
136 #define HNS3_TXD_L4T_M (0x3 << HNS3_TXD_L4T_S)
137 #define HNS3_TXD_L3CS_B 4
138 #define HNS3_TXD_L4CS_B 5
139 #define HNS3_TXD_VLAN_B 6
140 #define HNS3_TXD_TSO_B 7
142 #define HNS3_TXD_L2LEN_S 8
143 #define HNS3_TXD_L2LEN_M (0xff << HNS3_TXD_L2LEN_S)
144 #define HNS3_TXD_L3LEN_S 16
145 #define HNS3_TXD_L3LEN_M (0xff << HNS3_TXD_L3LEN_S)
146 #define HNS3_TXD_L4LEN_S 24
147 #define HNS3_TXD_L4LEN_M (0xff << HNS3_TXD_L4LEN_S)
149 #define HNS3_TXD_CSUM_START_S 8
150 #define HNS3_TXD_CSUM_START_M (0xffff << HNS3_TXD_CSUM_START_S)
152 #define HNS3_TXD_OL3T_S 0
153 #define HNS3_TXD_OL3T_M (0x3 << HNS3_TXD_OL3T_S)
154 #define HNS3_TXD_OVLAN_B 2
155 #define HNS3_TXD_MACSEC_B 3
156 #define HNS3_TXD_TUNTYPE_S 4
157 #define HNS3_TXD_TUNTYPE_M (0xf << HNS3_TXD_TUNTYPE_S)
159 #define HNS3_TXD_CSUM_OFFSET_S 8
160 #define HNS3_TXD_CSUM_OFFSET_M (0xffff << HNS3_TXD_CSUM_OFFSET_S)
162 #define HNS3_TXD_BDTYPE_S 0
163 #define HNS3_TXD_BDTYPE_M (0xf << HNS3_TXD_BDTYPE_S)
164 #define HNS3_TXD_FE_B 4
165 #define HNS3_TXD_SC_S 5
166 #define HNS3_TXD_SC_M (0x3 << HNS3_TXD_SC_S)
167 #define HNS3_TXD_EXTEND_B 7
168 #define HNS3_TXD_VLD_B 8
169 #define HNS3_TXD_RI_B 9
170 #define HNS3_TXD_RA_B 10
171 #define HNS3_TXD_TSYN_B 11
172 #define HNS3_TXD_DECTTL_S 12
173 #define HNS3_TXD_DECTTL_M (0xf << HNS3_TXD_DECTTL_S)
175 #define HNS3_TXD_OL4CS_B 22
177 #define HNS3_TXD_MSS_S 0
178 #define HNS3_TXD_MSS_M (0x3fff << HNS3_TXD_MSS_S)
179 #define HNS3_TXD_HW_CS_B 14
181 #define HNS3_VECTOR_TX_IRQ BIT_ULL(0)
182 #define HNS3_VECTOR_RX_IRQ BIT_ULL(1)
184 #define HNS3_VECTOR_NOT_INITED 0
185 #define HNS3_VECTOR_INITED 1
187 #define HNS3_MAX_BD_SIZE 65535
188 #define HNS3_MAX_TSO_BD_NUM 63U
189 #define HNS3_MAX_TSO_SIZE \
190 (HNS3_MAX_BD_SIZE * HNS3_MAX_TSO_BD_NUM)
192 #define HNS3_MAX_NON_TSO_SIZE(max_non_tso_bd_num) \
193 (HNS3_MAX_BD_SIZE * (max_non_tso_bd_num))
195 #define HNS3_VECTOR_GL0_OFFSET 0x100
196 #define HNS3_VECTOR_GL1_OFFSET 0x200
197 #define HNS3_VECTOR_GL2_OFFSET 0x300
198 #define HNS3_VECTOR_RL_OFFSET 0x900
199 #define HNS3_VECTOR_RL_EN_B 6
200 #define HNS3_VECTOR_TX_QL_OFFSET 0xe00
201 #define HNS3_VECTOR_RX_QL_OFFSET 0xf00
203 #define HNS3_RING_EN_B 0
205 #define HNS3_GL0_CQ_MODE_REG 0x20d00
206 #define HNS3_GL1_CQ_MODE_REG 0x20d04
207 #define HNS3_GL2_CQ_MODE_REG 0x20d08
208 #define HNS3_CQ_MODE_EQE 1U
209 #define HNS3_CQ_MODE_CQE 0U
211 enum hns3_pkt_l2t_type {
212 HNS3_L2_TYPE_UNICAST,
213 HNS3_L2_TYPE_MULTICAST,
214 HNS3_L2_TYPE_BROADCAST,
215 HNS3_L2_TYPE_INVALID,
218 enum hns3_pkt_l3t_type {
225 enum hns3_pkt_l4t_type {
232 enum hns3_pkt_ol3t_type {
235 HNS3_OL3T_IPV4_NO_CSUM,
239 enum hns3_pkt_tun_type {
246 /* hardware spec ring buffer format */
247 struct __packed hns3_desc {
261 __le32 type_cs_vlan_tso_len;
263 __u8 type_cs_vlan_tso;
269 __le16 outer_vlan_tag;
273 __le32 ol_type_vlan_len_msec;
275 __u8 ol_type_vlan_msec;
283 __le16 bdtp_fe_sc_vld_ra_ri;
299 __le16 o_dm_vlan_id_fb;
309 enum hns3_desc_type {
310 DESC_TYPE_UNKNOWN = 0,
311 DESC_TYPE_SKB = 1 << 0,
312 DESC_TYPE_FRAGLIST_SKB = 1 << 1,
313 DESC_TYPE_PAGE = 1 << 2,
314 DESC_TYPE_BOUNCE_ALL = 1 << 3,
315 DESC_TYPE_BOUNCE_HEAD = 1 << 4,
316 DESC_TYPE_SGL_SKB = 1 << 5,
317 DESC_TYPE_PP_FRAG = 1 << 6,
320 struct hns3_desc_cb {
321 dma_addr_t dma; /* dma address of this desc */
322 void *buf; /* cpu addr for a desc */
324 /* priv data for the desc, e.g. skb when use with ip stack */
328 u32 page_offset; /* for rx */
329 u32 send_bytes; /* for tx */
332 u32 length; /* length of the buffer */
336 /* desc type, used by the ring user to mark the type of the priv data */
341 enum hns3_pkt_l3type {
346 HNS3_L3_TYPE_IPV4_OPT,
347 HNS3_L3_TYPE_IPV6_EXT,
350 HNS3_L3_TYPE_MAC_PAUSE,
351 HNS3_L3_TYPE_PFC_PAUSE, /* 0x9 */
353 /* reserved for 0xA~0xB */
355 HNS3_L3_TYPE_CNM = 0xc,
357 /* reserved for 0xD~0xE */
359 HNS3_L3_TYPE_PARSE_FAIL = 0xf /* must be last */
362 enum hns3_pkt_l4type {
370 /* reserved for 0x6~0xE */
372 HNS3_L4_TYPE_PARSE_FAIL = 0xf /* must be last */
375 enum hns3_pkt_ol3type {
376 HNS3_OL3_TYPE_IPV4 = 0,
378 /* reserved for 0x2~0x3 */
379 HNS3_OL3_TYPE_IPV4_OPT = 4,
380 HNS3_OL3_TYPE_IPV6_EXT,
382 /* reserved for 0x6~0xE */
384 HNS3_OL3_TYPE_PARSE_FAIL = 0xf /* must be last */
387 enum hns3_pkt_ol4type {
388 HNS3_OL4_TYPE_NO_TUN,
389 HNS3_OL4_TYPE_MAC_IN_UDP,
391 HNS3_OL4_TYPE_UNKNOWN
394 struct hns3_rx_ptype {
417 u64 over_max_recursion;
445 struct hns3_tx_spare {
454 struct hns3_enet_ring {
455 struct hns3_desc *desc; /* dma map address space */
456 struct hns3_desc_cb *desc_cb;
457 struct hns3_enet_ring *next;
458 struct hns3_enet_tqp_vector *tqp_vector;
459 struct hnae3_queue *tqp;
461 struct device *dev; /* will be used for DMA mapping of descriptors */
462 struct page_pool *page_pool;
465 struct ring_stats stats;
466 struct u64_stats_sync syncp;
468 dma_addr_t desc_dma_addr;
469 u32 buf_size; /* size for hnae_desc->addr, preset by AE */
470 u16 desc_num; /* total number of desc */
471 int next_to_use; /* idx of next spare desc */
473 /* idx of lastest sent desc, the ring is empty when equal to
477 u32 flag; /* ring attribute */
484 int last_to_use; /* last idx used by xmit */
486 struct hns3_tx_spare *tx_spare;
491 u32 pull_len; /* memcpy len for current rx packet */
494 /* first buffer address for current packet */
497 struct sk_buff *tail_skb;
500 } ____cacheline_internodealigned_in_smp;
502 enum hns3_flow_level_range {
509 #define HNS3_INT_GL_50K 0x0014
510 #define HNS3_INT_GL_20K 0x0032
511 #define HNS3_INT_GL_18K 0x0036
512 #define HNS3_INT_GL_8K 0x007C
514 #define HNS3_INT_GL_1US BIT(31)
516 #define HNS3_INT_RL_MAX 0x00EC
517 #define HNS3_INT_RL_ENABLE_MASK 0x40
519 #define HNS3_INT_QL_DEFAULT_CFG 0x20
521 struct hns3_enet_coalesce {
528 enum hns3_flow_level_range flow_level;
531 struct hns3_enet_ring_group {
532 /* array of pointers to rings */
533 struct hns3_enet_ring *ring;
534 u64 total_bytes; /* total bytes processed this group */
535 u64 total_packets; /* total packets processed this group */
537 struct hns3_enet_coalesce coal;
541 struct hns3_enet_tqp_vector {
542 struct hnae3_handle *handle;
543 u8 __iomem *mask_addr;
547 u16 idx; /* index in the TQP vector array per handle. */
549 struct napi_struct napi;
551 struct hns3_enet_ring_group rx_group;
552 struct hns3_enet_ring_group tx_group;
554 cpumask_t affinity_mask;
555 u16 num_tqps; /* total number of tqps in TQP vector */
556 struct irq_affinity_notify affinity_notify;
558 char name[HNAE3_INT_NAME_LEN];
561 } ____cacheline_internodealigned_in_smp;
563 struct hns3_nic_priv {
564 struct hnae3_handle *ae_handle;
565 struct net_device *netdev;
569 * the cb for nic to manage the ring buffer, the first half of the
570 * array is for tx_ring and vice versa for the second half
572 struct hns3_enet_ring *ring;
573 struct hns3_enet_tqp_vector *tqp_vector;
575 u8 max_non_tso_bd_num;
577 u64 tx_timeout_count;
581 enum dim_cq_period_mode tx_cqe_mode;
582 enum dim_cq_period_mode rx_cqe_mode;
583 struct hns3_enet_coalesce tx_coal;
584 struct hns3_enet_coalesce rx_coal;
598 struct gre_base_hdr *gre;
602 struct hns3_hw_error_info {
603 enum hnae3_hw_error_type type;
607 struct hns3_reset_type_map {
608 enum ethtool_reset_flags rst_flags;
609 enum hnae3_reset_type rst_type;
612 static inline int ring_space(struct hns3_enet_ring *ring)
614 /* This smp_load_acquire() pairs with smp_store_release() in
615 * hns3_nic_reclaim_one_desc called by hns3_clean_tx_ring.
617 int begin = smp_load_acquire(&ring->next_to_clean);
618 int end = READ_ONCE(ring->next_to_use);
620 return ((end >= begin) ? (ring->desc_num - end + begin) :
624 static inline u32 hns3_read_reg(void __iomem *base, u32 reg)
626 return readl(base + reg);
629 static inline void hns3_write_reg(void __iomem *base, u32 reg, u32 value)
631 u8 __iomem *reg_addr = READ_ONCE(base);
633 writel(value, reg_addr + reg);
636 #define hns3_read_dev(a, reg) \
637 hns3_read_reg((a)->io_base, reg)
639 static inline bool hns3_nic_resetting(struct net_device *netdev)
641 struct hns3_nic_priv *priv = netdev_priv(netdev);
643 return test_bit(HNS3_NIC_STATE_RESETTING, &priv->state);
646 #define hns3_write_dev(a, reg, value) \
647 hns3_write_reg((a)->io_base, reg, value)
649 #define ring_to_dev(ring) ((ring)->dev)
651 #define ring_to_netdev(ring) ((ring)->tqp_vector->napi.dev)
653 #define ring_to_dma_dir(ring) (HNAE3_IS_TX_RING(ring) ? \
654 DMA_TO_DEVICE : DMA_FROM_DEVICE)
656 #define hns3_buf_size(_ring) ((_ring)->buf_size)
658 static inline unsigned int hns3_page_order(struct hns3_enet_ring *ring)
660 #if (PAGE_SIZE < 8192)
661 if (ring->buf_size > (PAGE_SIZE / 2))
667 #define hns3_page_size(_ring) (PAGE_SIZE << hns3_page_order(_ring))
669 /* iterator for handling rings in ring group */
670 #define hns3_for_each_ring(pos, head) \
671 for (pos = (head).ring; (pos); pos = (pos)->next)
673 #define hns3_get_handle(ndev) \
674 (((struct hns3_nic_priv *)netdev_priv(ndev))->ae_handle)
676 #define hns3_gl_usec_to_reg(int_gl) ((int_gl) >> 1)
677 #define hns3_gl_round_down(int_gl) round_down(int_gl, 2)
679 #define hns3_rl_usec_to_reg(int_rl) ((int_rl) >> 2)
680 #define hns3_rl_round_down(int_rl) round_down(int_rl, 4)
682 void hns3_ethtool_set_ops(struct net_device *netdev);
683 int hns3_set_channels(struct net_device *netdev,
684 struct ethtool_channels *ch);
686 void hns3_clean_tx_ring(struct hns3_enet_ring *ring, int budget);
687 int hns3_init_all_ring(struct hns3_nic_priv *priv);
688 int hns3_nic_reset_all_ring(struct hnae3_handle *h);
689 void hns3_fini_ring(struct hns3_enet_ring *ring);
690 netdev_tx_t hns3_nic_net_xmit(struct sk_buff *skb, struct net_device *netdev);
691 bool hns3_is_phys_func(struct pci_dev *pdev);
692 int hns3_clean_rx_ring(
693 struct hns3_enet_ring *ring, int budget,
694 void (*rx_fn)(struct hns3_enet_ring *, struct sk_buff *));
696 void hns3_set_vector_coalesce_rx_gl(struct hns3_enet_tqp_vector *tqp_vector,
698 void hns3_set_vector_coalesce_tx_gl(struct hns3_enet_tqp_vector *tqp_vector,
700 void hns3_set_vector_coalesce_rl(struct hns3_enet_tqp_vector *tqp_vector,
702 void hns3_set_vector_coalesce_rx_ql(struct hns3_enet_tqp_vector *tqp_vector,
704 void hns3_set_vector_coalesce_tx_ql(struct hns3_enet_tqp_vector *tqp_vector,
707 void hns3_request_update_promisc_mode(struct hnae3_handle *handle);
709 #ifdef CONFIG_HNS3_DCB
710 void hns3_dcbnl_setup(struct hnae3_handle *handle);
712 static inline void hns3_dcbnl_setup(struct hnae3_handle *handle) {}
715 int hns3_dbg_init(struct hnae3_handle *handle);
716 void hns3_dbg_uninit(struct hnae3_handle *handle);
717 void hns3_dbg_register_debugfs(const char *debugfs_dir_name);
718 void hns3_dbg_unregister_debugfs(void);
719 void hns3_shinfo_pack(struct skb_shared_info *shinfo, __u32 *size);
720 u16 hns3_get_max_available_channels(struct hnae3_handle *h);
721 void hns3_cq_period_mode_init(struct hns3_nic_priv *priv,
722 enum dim_cq_period_mode tx_mode,
723 enum dim_cq_period_mode rx_mode);