include/linux/fmc-sdb.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * This file is separate from sdb.h, because I want that one to remain
   4  * unchanged (as far as possible) from the official sdb distribution
   5  *
   6  * This file and associated functionality are a playground for me to
   7  * understand stuff which will later be implemented in more generic places.
   8  */
   9 #include <linux/sdb.h>
  10
  11 /* This is the union of all currently defined types */
  12 union sdb_record {
  13         struct sdb_interconnect ic;
  14         struct sdb_device dev;
  15         struct sdb_bridge bridge;
  16         struct sdb_integration integr;
  17         struct sdb_empty empty;
  18         struct sdb_synthesis synthesis;
  19         struct sdb_repo_url repo_url;
  20 };
  21
  22 struct fmc_device;
  23
  24 /* Every sdb table is turned into this structure */
  25 struct sdb_array {
  26         int len;
  27         int level;
  28         unsigned long baseaddr;
  29         struct fmc_device *fmc;         /* the device that hosts it */
  30         struct sdb_array *parent;       /* NULL at root */
  31         union sdb_record *record;       /* copies of the struct */
  32         struct sdb_array **subtree;     /* only valid for bridge items */
  33 };
  34
  35 extern int fmc_scan_sdb_tree(struct fmc_device *fmc, unsigned long address);
  36 extern void fmc_show_sdb_tree(const struct fmc_device *fmc);
  37 extern signed long fmc_find_sdb_device(struct sdb_array *tree, uint64_t vendor,
  38                                        uint32_t device, unsigned long *sz);
  39 extern int fmc_free_sdb_tree(struct fmc_device *fmc);