| // Copyright lowRISC contributors. |
| // Licensed under the Apache License, Version 2.0, see LICENSE for details. |
| // SPDX-License-Identifier: Apache-2.0 |
| |
| package usb_consts_pkg; |
| |
| // Definitions for USB Packet Identifier (called PID in the spec) |
| |
| // Bottom two bits of the PID are type |
| typedef enum logic [1:0] { |
| UsbPidTypeSpecial = 2'b00, |
| UsbPidTypeToken = 2'b01, |
| UsbPidTypeHandshake = 2'b10, |
| UsbPidTypeData = 2'b11 |
| } usb_pid_type_e; |
| |
| // Direct from USB 2.0 Spec Table 8-1 |
| typedef enum logic [3:0] { |
| // TOKEN |
| UsbPidOut = 4'b0001, |
| UsbPidIn = 4'b1001, |
| UsbPidSof = 4'b0101, |
| UsbPidSetup = 4'b1101, |
| // DATA |
| UsbPidData0 = 4'b0011, |
| UsbPidData1 = 4'b1011, |
| UsbPidData2 = 4'b0111, // Only valid for High Speed |
| UsbPidMData = 4'b1111, // Only valid for High Speed |
| // HANDSHAKE |
| UsbPidAck = 4'b0010, |
| UsbPidNak = 4'b1010, |
| UsbPidStall = 4'b1110, |
| UsbPidNyet = 4'b0110 |
| } usb_pid_e; |
| |
| |
| // USB SETUP packet commands (USB2.0 Table 9-4) |
| typedef enum logic [7:0] { |
| SetupGetStatus = 8'd0, |
| SetupClearFeature = 8'd1, |
| SetupSetFeature = 8'd3, |
| SetupSetAddress = 8'd5, |
| SetupGetDescriptor = 8'd6, |
| SetupSetDescriptor = 8'd7, |
| SetupGetConfiguration = 8'd8, |
| SetupSetConfiguration = 8'd9, |
| SetupGetInterface = 8'd10, |
| SetupSetInterface = 8'd11, |
| SetupSynchFrame = 8'd12 |
| } usb_setup_request_e; |
| |
| // USB Desctiptor Types (USB2.0 Table 9-5) |
| typedef enum logic [7:0] { |
| DscrTypeDevice = 8'd1, |
| DscrTypeConfiguration = 8'd2, |
| DscrTypeString = 8'd3, |
| DscrTypeInterface = 8'd4, |
| DscrTypeEndpoint = 8'd5, |
| DscrTypeDevQual = 8'd6, |
| DscrTypeOthrSpd = 8'd7, |
| DscrTypeIntPwr = 8'd8 |
| } usb_dscr_type_e; |
| |
| endpackage |
