drivers/net/bnxt/bnxt_cpr.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2014-2018 Broadcom
   3  * All rights reserved.
   4  */
   5
   6 #ifndef _BNXT_CPR_H_
   7 #define _BNXT_CPR_H_
   8 #include <stdbool.h>
   9
  10 #include <rte_io.h>
  11
  12 struct bnxt_db_info;
  13
  14 #define CMP_VALID(cmp, raw_cons, ring)                                  \
  15         (!!(rte_le_to_cpu_32(((struct cmpl_base *)(cmp))->info3_v) &    \
  16             CMPL_BASE_V) == !((raw_cons) & ((ring)->ring_size)))
  17
  18 #define CMPL_VALID(cmp, v)                                              \
  19         (!!(rte_le_to_cpu_32(((struct cmpl_base *)(cmp))->info3_v) &    \
  20             CMPL_BASE_V) == !(v))
  21
  22 #define NQ_CMP_VALID(nqcmp, raw_cons, ring)             \
  23         (!!((nqcmp)->v & rte_cpu_to_le_32(NQ_CN_V)) ==  \
  24          !((raw_cons) & ((ring)->ring_size)))
  25
  26 #define CMP_TYPE(cmp)                                           \
  27         (((struct cmpl_base *)cmp)->type & CMPL_BASE_TYPE_MASK)
  28
  29 #define ADV_RAW_CMP(idx, n)     ((idx) + (n))
  30 #define NEXT_RAW_CMP(idx)       ADV_RAW_CMP(idx, 1)
  31 #define RING_CMP(ring, idx)     ((idx) & (ring)->ring_mask)
  32 #define RING_CMPL(ring_mask, idx)       ((idx) & (ring_mask))
  33 #define NEXT_CMP(idx)           RING_CMP(ADV_RAW_CMP(idx, 1))
  34 #define FLIP_VALID(cons, mask, val)     ((cons) >= (mask) ? !(val) : (val))
  35
  36 #define DB_CP_REARM_FLAGS       (DB_KEY_CP | DB_IDX_VALID)
  37 #define DB_CP_FLAGS             (DB_KEY_CP | DB_IDX_VALID | DB_IRQ_DIS)
  38
  39 #define NEXT_CMPL(cpr, idx, v, inc)     do { \
  40         (idx) += (inc); \
  41         if (unlikely((idx) >= (cpr)->cp_ring_struct->ring_size)) { \
  42                 (v) = !(v); \
  43                 (idx) = 0; \
  44         } \
  45 } while (0)
  46 #define B_CP_DB_REARM(cpr, raw_cons)                                    \
  47         rte_write32((DB_CP_REARM_FLAGS |                                \
  48                     RING_CMP(((cpr)->cp_ring_struct), raw_cons)),       \
  49                     ((cpr)->cp_db.doorbell))
  50
  51 #define B_CP_DB_ARM(cpr)        rte_write32((DB_KEY_CP),                \
  52                                             ((cpr)->cp_db.doorbell))
  53
  54 #define B_CP_DB_DISARM(cpr)     (*(uint32_t *)((cpr)->cp_db.doorbell) = \
  55                                  DB_KEY_CP | DB_IRQ_DIS)
  56
  57 #define B_CP_DB_IDX_ARM(cpr, cons)                                      \
  58                 (*(uint32_t *)((cpr)->cp_db.doorbell) = (DB_CP_REARM_FLAGS | \
  59                                 (cons)))
  60
  61 #define B_CP_DB_IDX_DISARM(cpr, cons)   do {                            \
  62                 rte_smp_wmb();                                          \
  63                 (*(uint32_t *)((cpr)->cp_db.doorbell) = (DB_CP_FLAGS |  \
  64                                 (cons));                                \
  65 } while (0)
  66 #define B_CP_DIS_DB(cpr, raw_cons)                                      \
  67         rte_write32((DB_CP_FLAGS |                                      \
  68                     RING_CMP(((cpr)->cp_ring_struct), raw_cons)),       \
  69                     ((cpr)->cp_db.doorbell))
  70
  71 #define B_CP_DB(cpr, raw_cons, ring_mask)                               \
  72         rte_write32((DB_CP_FLAGS |                                      \
  73                     RING_CMPL((ring_mask), raw_cons)),  \
  74                     ((cpr)->cp_db.doorbell))
  75
  76 struct bnxt_db_info {
  77         void                    *doorbell;
  78         union {
  79                 uint64_t        db_key64;
  80                 uint32_t        db_key32;
  81         };
  82         bool                    db_64;
  83 };
  84
  85 struct bnxt_ring;
  86 struct bnxt_cp_ring_info {
  87         uint32_t                cp_raw_cons;
  88
  89         struct cmpl_base        *cp_desc_ring;
  90         struct bnxt_db_info     cp_db;
  91         rte_iova_t              cp_desc_mapping;
  92
  93         struct ctx_hw_stats     *hw_stats;
  94         rte_iova_t              hw_stats_map;
  95         uint32_t                hw_stats_ctx_id;
  96
  97         struct bnxt_ring        *cp_ring_struct;
  98         uint16_t                cp_cons;
  99         bool                    valid;
 100 };
 101
 102 #define RX_CMP_L2_ERRORS                                                \
 103         (RX_PKT_CMPL_ERRORS_BUFFER_ERROR_MASK | RX_PKT_CMPL_ERRORS_CRC_ERROR)
 104
 105 struct bnxt;
 106 void bnxt_handle_async_event(struct bnxt *bp, struct cmpl_base *cmp);
 107 void bnxt_handle_fwd_req(struct bnxt *bp, struct cmpl_base *cmp);
 108 int bnxt_event_hwrm_resp_handler(struct bnxt *bp, struct cmpl_base *cmp);
 109 void bnxt_dev_reset_and_resume(void *arg);
 110
 111 #endif