eth_min_len = 46
eth_interpacket_gap = 12
eth_preamble = 0xd555555555555555
buffer_depth = 2**log2_int(eth_mtu, need_pow2=False)
ethernet_type_ip = 0x800
ethernet_type_arp = 0x806
mac_header_length = 14
mac_header_fields = {
"target_mac": HeaderField(0, 0, 48),
"sender_mac": HeaderField(6, 0, 48),
"ethernet_type": HeaderField(12, 0, 16)
}
mac_header = Header(mac_header_fields,
mac_header_length,
swap_field_bytes=True)
arp_hwtype_ethernet = 0x0001
arp_proto_ip = 0x0800
arp_opcode_request = 0x0001
arp_opcode_reply = 0x0002
arp_header_length = 28
arp_header_fields = {
"hwtype": HeaderField(0, 0, 16),
"proto": HeaderField(2, 0, 16),
"hwsize": HeaderField(4, 0, 8),
"protosize": HeaderField(5, 0, 8),
"opcode": HeaderField(6, 0, 16),
"sender_mac": HeaderField(8, 0, 48),
fis_reg_h2d_header_fields = {
"type": HeaderField(0 * 4, 0, 8),
"pm_port": HeaderField(0 * 4, 8, 4),
"c": HeaderField(0 * 4, 15, 1),
"command": HeaderField(0 * 4, 16, 8),
"features_lsb": HeaderField(0 * 4, 24, 8),
"lba_lsb": HeaderField(1 * 4, 0, 24),
"device": HeaderField(1 * 4, 24, 8),
"lba_msb": HeaderField(2 * 4, 0, 24),
"features_msb": HeaderField(2 * 4, 24, 8),
"count": HeaderField(3 * 4, 0, 16),
"icc": HeaderField(3 * 4, 16, 8),
"control": HeaderField(3 * 4, 24, 8)
}
fis_reg_h2d_header = Header(fis_reg_h2d_header_fields,
fis_reg_h2d_header_length,
swap_field_bytes=False)
fis_reg_d2h_header_length = 5
fis_reg_d2h_header_fields = {
"type": HeaderField(0 * 4, 0, 8),
"pm_port": HeaderField(0 * 4, 8, 4),
"i": HeaderField(0 * 4, 14, 1),
"status": HeaderField(0 * 4, 16, 8),
"errors": HeaderField(0 * 4, 24, 8),
"lba_lsb": HeaderField(1 * 4, 0, 24),
"device": HeaderField(1 * 4, 24, 8),
"lba_msb": HeaderField(2 * 4, 0, 24),
"count": HeaderField(3 * 4, 0, 16)
}
fis_reg_d2h_header = Header(fis_reg_d2h_header_fields,
from litex.soc.interconnect.stream_packet import HeaderField, Header
etherbone_magic = 0x4e6f
etherbone_version = 1
etherbone_packet_header_length = 8
etherbone_packet_header_fields = {
"magic": HeaderField(0, 0, 16),
"version": HeaderField(2, 4, 4),
"nr": HeaderField(2, 2, 1),
"pr": HeaderField(2, 1, 1),
"pf": HeaderField(2, 0, 1),
"addr_size": HeaderField(3, 4, 4),
"port_size": HeaderField(3, 0, 4)
}
etherbone_packet_header = Header(etherbone_packet_header_fields,
etherbone_packet_header_length,
swap_field_bytes=True)
etherbone_record_header_length = 4
etherbone_record_header_fields = {
"bca": HeaderField(0, 0, 1),
"rca": HeaderField(0, 1, 1),
"rff": HeaderField(0, 2, 1),
"cyc": HeaderField(0, 4, 1),
"wca": HeaderField(0, 5, 1),
"wff": HeaderField(0, 6, 1),
"byte_enable": HeaderField(1, 0, 8),
"wcount": HeaderField(2, 0, 8),
"rcount": HeaderField(3, 0, 8)
}
etherbone_record_header = Header(etherbone_record_header_fields,