drivers/net/ice/base/ice_parser.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2001-2021 Intel Corporation
   3  */
   4
   5 #include "ice_common.h"
   6 #include "ice_parser_util.h"
   7
   8 #define ICE_SEC_DATA_OFFSET                             4
   9 #define ICE_SID_RXPARSER_IMEM_ENTRY_SIZE                48
  10 #define ICE_SID_RXPARSER_METADATA_INIT_ENTRY_SIZE       24
  11 #define ICE_SID_RXPARSER_CAM_ENTRY_SIZE                 16
  12 #define ICE_SID_RXPARSER_PG_SPILL_ENTRY_SIZE            17
  13 #define ICE_SID_RXPARSER_NOMATCH_CAM_ENTRY_SIZE         12
  14 #define ICE_SID_RXPARSER_NOMATCH_SPILL_ENTRY_SIZE       13
  15
  16 /**
  17  * ice_parser_sect_item_get - parse a item from a section
  18  * @sect_type: section type
  19  * @section: section object
  20  * @index: index of the item to get
  21  * @offset: dummy as prototype of ice_pkg_enum_entry's last parameter
  22  */
  23 void *ice_parser_sect_item_get(u32 sect_type, void *section,
  24                                u32 index, u32 *offset)
  25 {
  26         struct ice_pkg_sect_hdr *hdr;
  27         int data_off = ICE_SEC_DATA_OFFSET;
  28         int size;
  29
  30         if (!section)
  31                 return NULL;
  32
  33         switch (sect_type) {
  34         case ICE_SID_RXPARSER_IMEM:
  35                 size = ICE_SID_RXPARSER_IMEM_ENTRY_SIZE;
  36                 break;
  37         case ICE_SID_RXPARSER_METADATA_INIT:
  38                 size = ICE_SID_RXPARSER_METADATA_INIT_ENTRY_SIZE;
  39                 break;
  40         case ICE_SID_RXPARSER_CAM:
  41                 size = ICE_SID_RXPARSER_CAM_ENTRY_SIZE;
  42                 break;
  43         case ICE_SID_RXPARSER_PG_SPILL:
  44                 size = ICE_SID_RXPARSER_PG_SPILL_ENTRY_SIZE;
  45                 break;
  46         case ICE_SID_RXPARSER_NOMATCH_CAM:
  47                 size = ICE_SID_RXPARSER_NOMATCH_CAM_ENTRY_SIZE;
  48                 break;
  49         case ICE_SID_RXPARSER_NOMATCH_SPILL:
  50                 size = ICE_SID_RXPARSER_NOMATCH_SPILL_ENTRY_SIZE;
  51                 break;
  52         default:
  53                 return NULL;
  54         }
  55
  56         hdr = (struct ice_pkg_sect_hdr *)section;
  57         if (index >= LE16_TO_CPU(hdr->count))
  58                 return NULL;
  59
  60         return (void *)((uintptr_t)section + data_off + index * size);
  61 }
  62
  63 /**
  64  * ice_parser_create_table - create a item table from a section
  65  * @hw: pointer to the hardware structure
  66  * @sect_type: section type
  67  * @item_size: item size in byte
  68  * @length: number of items in the table to create
  69  * @item_get: the function will be parsed to ice_pkg_enum_entry
  70  * @parser_item: the function to parse the item
  71  */
  72 void *ice_parser_create_table(struct ice_hw *hw, u32 sect_type,
  73                               u32 item_size, u32 length,
  74                               void *(*item_get)(u32 sect_type, void *section,
  75                                                 u32 index, u32 *offset),
  76                               void (*parse_item)(struct ice_hw *hw, u16 idx,
  77                                                  void *item, void *data,
  78                                                  int size))
  79 {
  80         struct ice_seg *seg = hw->seg;
  81         struct ice_pkg_enum state;
  82         u16 idx = 0;
  83         void *table;
  84         void *data;
  85
  86         if (!seg)
  87                 return NULL;
  88
  89         table = ice_malloc(hw, item_size * length);
  90         if (!table) {
  91                 ice_debug(hw, ICE_DBG_PARSER, "failed to allocate memory for table type %d.\n",
  92                           sect_type);
  93                 return NULL;
  94         }
  95
  96         ice_memset(&state, 0, sizeof(state), ICE_NONDMA_MEM);
  97         do {
  98                 data = ice_pkg_enum_entry(seg, &state, sect_type, NULL,
  99                                           item_get);
 100                 seg = NULL;
 101                 if (data) {
 102                         struct ice_pkg_sect_hdr *hdr =
 103                                 (struct ice_pkg_sect_hdr *)state.sect;
 104
 105                         idx = hdr->offset + state.entry_idx;
 106                         parse_item(hw, idx,
 107                                    (void *)((uintptr_t)table + idx * item_size),
 108                                    data, item_size);
 109                 }
 110         } while (data);
 111
 112         return table;
 113 }
 114
 115 /**
 116  * ice_parser_create - create a parser instance
 117  * @hw: pointer to the hardware structure
 118  * @psr: output parameter for a new parser instance be created
 119  */
 120 enum ice_status ice_parser_create(struct ice_hw *hw, struct ice_parser **psr)
 121 {
 122         enum ice_status status;
 123         struct ice_parser *p;
 124
 125         p = (struct ice_parser *)ice_malloc(hw, sizeof(struct ice_parser));
 126
 127         if (!p)
 128                 return ICE_ERR_NO_MEMORY;
 129
 130         p->hw = hw;
 131
 132         p->imem_table = ice_imem_table_get(hw);
 133         if (!p->imem_table) {
 134                 status = ICE_ERR_PARAM;
 135                 goto err;
 136         }
 137
 138         p->mi_table = ice_metainit_table_get(hw);
 139         if (!p->mi_table) {
 140                 status = ICE_ERR_PARAM;
 141                 goto err;
 142         }
 143
 144         p->pg_cam_table = ice_pg_cam_table_get(hw);
 145         if (!p->pg_cam_table) {
 146                 status = ICE_ERR_PARAM;
 147                 goto err;
 148         }
 149
 150         p->pg_sp_cam_table = ice_pg_sp_cam_table_get(hw);
 151         if (!p->pg_sp_cam_table) {
 152                 status = ICE_ERR_PARAM;
 153                 goto err;
 154         }
 155
 156         p->pg_nm_cam_table = ice_pg_nm_cam_table_get(hw);
 157         if (!p->pg_nm_cam_table) {
 158                 status = ICE_ERR_PARAM;
 159                 goto err;
 160         }
 161
 162         p->pg_nm_sp_cam_table = ice_pg_nm_sp_cam_table_get(hw);
 163         if (!p->pg_nm_sp_cam_table) {
 164                 status = ICE_ERR_PARAM;
 165                 goto err;
 166         }
 167
 168         *psr = p;
 169         return ICE_SUCCESS;
 170 err:
 171         ice_parser_destroy(p);
 172         return status;
 173 }
 174
 175 /**
 176  * ice_parser_destroy - destroy a parser instance
 177  * @psr: pointer to a parser instance
 178  */
 179 void ice_parser_destroy(struct ice_parser *psr)
 180 {
 181         ice_free(psr->hw, psr->imem_table);
 182         ice_free(psr->hw, psr->mi_table);
 183         ice_free(psr->hw, psr->pg_cam_table);
 184         ice_free(psr->hw, psr->pg_sp_cam_table);
 185         ice_free(psr->hw, psr->pg_nm_cam_table);
 186         ice_free(psr->hw, psr->pg_nm_sp_cam_table);
 187
 188         ice_free(psr->hw, psr);
 189 }