ceph/src/seastar/dpdk/drivers/net/nfp/nfpcore/nfp_rtsym.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2018 Netronome Systems, Inc.
   3  * All rights reserved.
   4  */
   5
   6 #ifndef __NFP_RTSYM_H__
   7 #define __NFP_RTSYM_H__
   8
   9 #define NFP_RTSYM_TYPE_NONE             0
  10 #define NFP_RTSYM_TYPE_OBJECT           1
  11 #define NFP_RTSYM_TYPE_FUNCTION         2
  12 #define NFP_RTSYM_TYPE_ABS              3
  13
  14 #define NFP_RTSYM_TARGET_NONE           0
  15 #define NFP_RTSYM_TARGET_LMEM           -1
  16 #define NFP_RTSYM_TARGET_EMU_CACHE      -7
  17
  18 /*
  19  * Structure describing a run-time NFP symbol.
  20  *
  21  * The memory target of the symbol is generally the CPP target number and can be
  22  * used directly by the nfp_cpp API calls.  However, in some cases (i.e., for
  23  * local memory or control store) the target is encoded using a negative number.
  24  *
  25  * When the target type can not be used to fully describe the location of a
  26  * symbol the domain field is used to further specify the location (i.e., the
  27  * specific ME or island number).
  28  *
  29  * For ME target resources, 'domain' is an MEID.
  30  * For Island target resources, 'domain' is an island ID, with the one exception
  31  * of "sram" symbols for backward compatibility, which are viewed as global.
  32  */
  33 struct nfp_rtsym {
  34         const char *name;
  35         uint64_t addr;
  36         uint64_t size;
  37         int type;
  38         int target;
  39         int domain;
  40 };
  41
  42 struct nfp_rtsym_table;
  43
  44 struct nfp_rtsym_table *nfp_rtsym_table_read(struct nfp_cpp *cpp);
  45
  46 struct nfp_rtsym_table *
  47 __nfp_rtsym_table_read(struct nfp_cpp *cpp, const struct nfp_mip *mip);
  48
  49 int nfp_rtsym_count(struct nfp_rtsym_table *rtbl);
  50
  51 const struct nfp_rtsym *nfp_rtsym_get(struct nfp_rtsym_table *rtbl, int idx);
  52
  53 const struct nfp_rtsym *
  54 nfp_rtsym_lookup(struct nfp_rtsym_table *rtbl, const char *name);
  55
  56 uint64_t nfp_rtsym_read_le(struct nfp_rtsym_table *rtbl, const char *name,
  57                            int *error);
  58 uint8_t *
  59 nfp_rtsym_map(struct nfp_rtsym_table *rtbl, const char *name,
  60               unsigned int min_size, struct nfp_cpp_area **area);
  61 #endif