1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2014-2018 Broadcom
11 #include <rte_memory.h>
13 #define RING_ADV(ring, idx, n) (((idx) + (n)) & (ring)->ring_mask)
14 #define RING_NEXT(ring, idx) RING_ADV(ring, idx, 1)
16 #define DB_IDX_MASK 0xffffff
17 #define DB_IDX_VALID (0x1 << 26)
18 #define DB_IRQ_DIS (0x1 << 27)
19 #define DB_KEY_TX (0x0 << 28)
20 #define DB_KEY_RX (0x1 << 28)
21 #define DB_KEY_CP (0x2 << 28)
22 #define DB_KEY_ST (0x3 << 28)
23 #define DB_KEY_TX_PUSH (0x4 << 28)
24 #define DB_LONG_TX_PUSH (0x2 << 24)
26 #define DEFAULT_CP_RING_SIZE 256
27 #define DEFAULT_RX_RING_SIZE 256
28 #define DEFAULT_TX_RING_SIZE 256
30 #define AGG_RING_SIZE_FACTOR 2
31 #define AGG_RING_MULTIPLIER 2
33 /* These assume 4k pages */
34 #define MAX_RX_DESC_CNT (8 * 1024)
35 #define MAX_TX_DESC_CNT (4 * 1024)
36 #define MAX_CP_DESC_CNT (16 * 1024)
38 #define INVALID_HW_RING_ID ((uint16_t)-1)
39 #define INVALID_STATS_CTX_ID ((uint16_t)-1)
50 uint16_t fw_ring_id; /* Ring id filled by Chimp FW */
51 uint16_t fw_rx_ring_id;
55 struct bnxt_ring_grp_info {
56 uint16_t fw_stats_ctx;
58 uint16_t rx_fw_ring_id;
59 uint16_t cp_fw_ring_id;
60 uint16_t ag_fw_ring_id;
64 struct bnxt_tx_ring_info;
65 struct bnxt_rx_ring_info;
66 struct bnxt_cp_ring_info;
67 void bnxt_free_ring(struct bnxt_ring *ring);
68 int bnxt_alloc_ring_grps(struct bnxt *bp);
69 int bnxt_alloc_rings(struct bnxt *bp, uint16_t qidx,
70 struct bnxt_tx_queue *txq,
71 struct bnxt_rx_queue *rxq,
72 struct bnxt_cp_ring_info *cp_ring_info,
73 struct bnxt_cp_ring_info *nq_ring_info,
75 int bnxt_alloc_hwrm_rx_ring(struct bnxt *bp, int queue_index);
76 int bnxt_alloc_hwrm_rings(struct bnxt *bp);
77 int bnxt_alloc_async_cp_ring(struct bnxt *bp);
78 void bnxt_free_async_cp_ring(struct bnxt *bp);
79 int bnxt_alloc_async_ring_struct(struct bnxt *bp);
80 int bnxt_alloc_rxtx_nq_ring(struct bnxt *bp);
81 void bnxt_free_rxtx_nq_ring(struct bnxt *bp);
83 static inline void bnxt_db_write(struct bnxt_db_info *db, uint32_t idx)
88 rte_write64_relaxed(db->db_key64 | idx, db->doorbell);
90 rte_write32_relaxed(db->db_key32 | idx, db->doorbell);
93 /* Ring an NQ doorbell and disable interrupts for the ring. */
94 static inline void bnxt_db_nq(struct bnxt_cp_ring_info *cpr)
96 if (unlikely(!cpr->cp_db.db_64))
100 rte_write64_relaxed(cpr->cp_db.db_key64 | DBR_TYPE_NQ |
101 RING_CMP(cpr->cp_ring_struct, cpr->cp_raw_cons),
102 cpr->cp_db.doorbell);
105 /* Ring an NQ doorbell and enable interrupts for the ring. */
106 static inline void bnxt_db_nq_arm(struct bnxt_cp_ring_info *cpr)
108 if (unlikely(!cpr->cp_db.db_64))
112 rte_write64_relaxed(cpr->cp_db.db_key64 | DBR_TYPE_NQ_ARM |
113 RING_CMP(cpr->cp_ring_struct, cpr->cp_raw_cons),
114 cpr->cp_db.doorbell);
117 static inline void bnxt_db_cq(struct bnxt_cp_ring_info *cpr)
119 struct bnxt_db_info *db = &cpr->cp_db;
120 uint32_t idx = RING_CMP(cpr->cp_ring_struct, cpr->cp_raw_cons);
122 rte_compiler_barrier();
124 rte_write64_relaxed(db->db_key64 | idx, db->doorbell);
126 B_CP_DIS_DB(cpr, cpr->cp_raw_cons);