helpers.hpp

Go to the documentation of this file.

 
#pragma once
 
#include "ublk/ublk_cmd.h"
#include <cassert>
#include <cstdint>
 
namespace ublk {

inline uint16_t shmem_zc_index(uint64_t addr) noexcept {
    return ublk_shmem_zc_index(addr);
}

inline uint32_t shmem_zc_offset(uint64_t addr) noexcept {
    return ublk_shmem_zc_offset(addr);
}

inline uint64_t user_copy_pos(uint16_t q_id, uint16_t tag,
                              uint32_t offset) noexcept {
    assert(!(offset & ~UBLK_IO_BUF_BITS_MASK));
    return UBLKSRV_IO_BUF_OFFSET +
           ((static_cast<uint64_t>(q_id) << UBLK_QID_OFF) |
            (static_cast<uint64_t>(tag) << UBLK_TAG_OFF) | offset);
}
 
} // namespace ublk