zircon/system/ulib/ftl/ftl.h

// Copyright 2018 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#pragma once

#include <stdint.h>

//
// Type Declarations.
//

// NDM Control Block
typedef struct ndm* NDM;
typedef const struct ndm* CNDM;

// FTL Interface Structure
typedef struct XfsVol {
  // Driver functions
  int (*write_pages)(const void* buf, uint32_t page0, int cnt, void* vol);
  int (*read_pages)(void* buf, uint32_t page0, int cnt, void* vol);
  int (*report)(void* vol, uint32_t msg, ...);

  const char* name;    // volume name
  uint32_t flags;      // option flags
  uint32_t num_pages;  // number of pages in volume
  uint32_t page_size;  // page size in bytes
  void* vol;           // driver's volume pointer
  void* ftl_volume;    // ftl layer (block device) volume
} XfsVol;