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//
// Copyright 2019 Ettus Research, a National Instruments Brand
//
// SPDX-License-Identifier: GPL-3.0-or-later
//
#ifndef INCLUDED_RFNOC_RFNOC_COMMON_HPP
#define INCLUDED_RFNOC_RFNOC_COMMON_HPP
#include <uhd/rfnoc/defaults.hpp>
#include <uhdlib/transport/link_if.hpp>
#include <memory>
namespace uhd { namespace rfnoc {
//----------------------------------------------
// Types
//----------------------------------------------
//! Type that indicates the CHDR Width in bits
enum chdr_w_t { CHDR_W_64 = 0, CHDR_W_128 = 1, CHDR_W_256 = 2, CHDR_W_512 = 3 };
//! Conversion from chdr_w_t to a number of bits
constexpr size_t chdr_w_to_bits(chdr_w_t chdr_w)
{
switch (chdr_w) {
case CHDR_W_64:
return 64;
case CHDR_W_128:
return 128;
case CHDR_W_256:
return 256;
case CHDR_W_512:
return 512;
default:
return 0;
}
}
//! Device ID Type
using device_id_t = uint16_t;
//! Stream Endpoint Instance Number Type
using sep_inst_t = uint16_t;
//! Stream Endpoint Physical Address Type
using sep_addr_t = std::pair<device_id_t, sep_inst_t>;
//! Stream Endpoint Physical Address Type (first = source, second = destination)
using sep_addr_pair_t = std::pair<sep_addr_t, sep_addr_t>;
//! Stream Endpoint ID Type
using sep_id_t = uint16_t;
//! Stream Endpoint pair Type (first = source, second = destination)
using sep_id_pair_t = std::pair<sep_id_t, sep_id_t>;
//! Stream Endpoint Virtual Channel Type
using sep_vc_t = uint8_t;
//! NULL/unassigned device ID
static constexpr device_id_t NULL_DEVICE_ID = 0;
//! NULL/unassigned device address
static constexpr sep_addr_t NULL_DEVICE_ADDR{NULL_DEVICE_ID, 0};
//! NULL/unassigned stream endpoint ID
static constexpr sep_id_t NULL_EPID = 0;
//! Flow control buffer configuration parameters
struct stream_buff_params_t
{
uint64_t bytes;
uint32_t packets;
};
//! The data type of the buffer used to capture/generate data
enum sw_buff_t { BUFF_U64 = 0, BUFF_U32 = 1, BUFF_U16 = 2, BUFF_U8 = 3 };
//! Conversion from number of bits to sw_buff
constexpr sw_buff_t bits_to_sw_buff(size_t bits)
{
if (bits <= 8) {
return BUFF_U8;
} else if (bits <= 16) {
return BUFF_U16;
} else if (bits <= 32) {
return BUFF_U32;
} else {
return BUFF_U64;
}
}
//----------------------------------------------
// Constants
//----------------------------------------------
constexpr uint16_t RFNOC_PROTO_VER = 0x0100;
constexpr uint64_t MAX_FC_CAPACITY_BYTES = (uint64_t(1) << 40) - 1;
constexpr uint32_t MAX_FC_CAPACITY_PKTS = (uint32_t(1) << 24) - 1;
constexpr uint64_t MAX_FC_FREQ_BYTES = (uint64_t(1) << 40) - 1;
constexpr uint32_t MAX_FC_FREQ_PKTS = (uint32_t(1) << 24) - 1;
constexpr uint64_t MAX_FC_HEADROOM_BYTES = (uint64_t(1) << 16) - 1;
constexpr uint32_t MAX_FC_HEADROOM_PKTS = (uint32_t(1) << 8) - 1;
}} // namespace uhd::rfnoc
#endif /* INCLUDED_RFNOC_RFNOC_COMMON_HPP */
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