drivers/net/bnxt/tf_core/tf_em.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2019-2020 Broadcom
   3  * All rights reserved.
   4  */
   5
   6 #ifndef _TF_EM_H_
   7 #define _TF_EM_H_
   8
   9 #include "tf_core.h"
  10 #include "tf_session.h"
  11
  12 #define TF_HW_EM_KEY_MAX_SIZE 52
  13 #define TF_EM_KEY_RECORD_SIZE 64
  14
  15 /*
  16  * Used to build GFID:
  17  *
  18  *   15           2  0
  19  *  +--------------+--+
  20  *  |   Index      |E |
  21  *  +--------------+--+
  22  *
  23  * E = Entry (bucket inndex)
  24  */
  25 #define TF_EM_INTERNAL_INDEX_SHIFT 2
  26 #define TF_EM_INTERNAL_INDEX_MASK 0xFFFC
  27 #define TF_EM_INTERNAL_ENTRY_MASK  0x3
  28
  29 /** EEM Entry header
  30  *
  31  */
  32 struct tf_eem_entry_hdr {
  33         uint32_t pointer;
  34         uint32_t word1;  /*
  35                           * The header is made up of two words,
  36                           * this is the first word. This field has multiple
  37                           * subfields, there is no suitable single name for
  38                           * it so just going with word1.
  39                           */
  40 #define TF_LKUP_RECORD_VALID_SHIFT 31
  41 #define TF_LKUP_RECORD_VALID_MASK 0x80000000
  42 #define TF_LKUP_RECORD_L1_CACHEABLE_SHIFT 30
  43 #define TF_LKUP_RECORD_L1_CACHEABLE_MASK 0x40000000
  44 #define TF_LKUP_RECORD_STRENGTH_SHIFT 28
  45 #define TF_LKUP_RECORD_STRENGTH_MASK 0x30000000
  46 #define TF_LKUP_RECORD_RESERVED_SHIFT 17
  47 #define TF_LKUP_RECORD_RESERVED_MASK 0x0FFE0000
  48 #define TF_LKUP_RECORD_KEY_SIZE_SHIFT 8
  49 #define TF_LKUP_RECORD_KEY_SIZE_MASK 0x0001FF00
  50 #define TF_LKUP_RECORD_ACT_REC_SIZE_SHIFT 3
  51 #define TF_LKUP_RECORD_ACT_REC_SIZE_MASK 0x000000F8
  52 #define TF_LKUP_RECORD_ACT_REC_INT_SHIFT 2
  53 #define TF_LKUP_RECORD_ACT_REC_INT_MASK 0x00000004
  54 #define TF_LKUP_RECORD_EXT_FLOW_CTR_SHIFT 1
  55 #define TF_LKUP_RECORD_EXT_FLOW_CTR_MASK 0x00000002
  56 #define TF_LKUP_RECORD_ACT_PTR_MSB_SHIFT 0
  57 #define TF_LKUP_RECORD_ACT_PTR_MSB_MASK 0x00000001
  58 };
  59
  60 /** EEM Entry
  61  *  Each EEM entry is 512-bit (64-bytes)
  62  */
  63 struct tf_eem_64b_entry {
  64         /** Key is 448 bits - 56 bytes */
  65         uint8_t key[TF_EM_KEY_RECORD_SIZE - sizeof(struct tf_eem_entry_hdr)];
  66         /** Header is 8 bytes long */
  67         struct tf_eem_entry_hdr hdr;
  68 };
  69
  70 /** EM Entry
  71  *  Each EM entry is 512-bit (64-bytes) but ordered differently to
  72  *  EEM.
  73  */
  74 struct tf_em_64b_entry {
  75         /** Header is 8 bytes long */
  76         struct tf_eem_entry_hdr hdr;
  77         /** Key is 448 bits - 56 bytes */
  78         uint8_t key[TF_EM_KEY_RECORD_SIZE - sizeof(struct tf_eem_entry_hdr)];
  79 };
  80
  81 /**
  82  * Allocates EEM Table scope
  83  *
  84  * [in] tfp
  85  *   Pointer to TruFlow handle
  86  *
  87  * [in] parms
  88  *   Pointer to input parameters
  89  *
  90  * Returns:
  91  *   0       - Success
  92  *   -EINVAL - Parameter error
  93  *   -ENOMEM - Out of memory
  94  */
  95 int tf_alloc_eem_tbl_scope(struct tf *tfp,
  96                            struct tf_alloc_tbl_scope_parms *parms);
  97
  98 /**
  99  * Free's EEM Table scope control block
 100  *
 101  * [in] tfp
 102  *   Pointer to TruFlow handle
 103  *
 104  * [in] parms
 105  *   Pointer to input parameters
 106  *
 107  * Returns:
 108  *   0       - Success
 109  *   -EINVAL - Parameter error
 110  */
 111 int tf_free_eem_tbl_scope_cb(struct tf *tfp,
 112                              struct tf_free_tbl_scope_parms *parms);
 113
 114 /**
 115  * Function to search for table scope control block structure
 116  * with specified table scope ID.
 117  *
 118  * [in] session
 119  *   Session to use for the search of the table scope control block
 120  * [in] tbl_scope_id
 121  *   Table scope ID to search for
 122  *
 123  * Returns:
 124  *  Pointer to the found table scope control block struct or NULL if
 125  *  table scope control block struct not found
 126  */
 127 struct tf_tbl_scope_cb *tbl_scope_cb_find(struct tf_session *session,
 128                                           uint32_t tbl_scope_id);
 129
 130 int tf_insert_eem_entry(struct tf_session *session,
 131                         struct tf_tbl_scope_cb *tbl_scope_cb,
 132                         struct tf_insert_em_entry_parms *parms);
 133
 134 int tf_insert_em_internal_entry(struct tf *tfp,
 135                                 struct tf_insert_em_entry_parms *parms);
 136
 137 int tf_delete_eem_entry(struct tf *tfp,
 138                         struct tf_delete_em_entry_parms *parms);
 139
 140 int tf_delete_em_internal_entry(struct tf                       *tfp,
 141                                 struct tf_delete_em_entry_parms *parms);
 142
 143 void *tf_em_get_table_page(struct tf_tbl_scope_cb *tbl_scope_cb,
 144                            enum tf_dir dir,
 145                            uint32_t offset,
 146                            enum tf_em_table_type table_type);
 147
 148 #endif /* _TF_EM_H_ */