211 lines
7.7 KiB
C
211 lines
7.7 KiB
C
/**************************************************************************/
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/*!
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@file hub.h
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@author hathach (tinyusb.org)
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@section LICENSE
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Software License Agreement (BSD License)
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Copyright (c) 2013, hathach (tinyusb.org)
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the copyright holders nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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This file is part of the tinyusb stack.
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*/
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/**************************************************************************/
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/** \ingroup group_class
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* \defgroup ClassDriver_Hub Hub (Host only)
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* \details Like most PC's OS, Hub support is completely hidden from Application. In fact, application cannot determine whether
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* a device is mounted directly via roothub or via a hub's port. All Hub-related procedures are performed and managed
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* by tinyusb stack. Unless you are trying to develop the stack itself, there are nothing else can be used by Application.
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* \note Due to my laziness, only 1-level of Hub is supported. In other way, the stack cannot mount a hub via another hub.
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* @{
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*/
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#ifndef _TUSB_HUB_H_
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#define _TUSB_HUB_H_
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#include "common/common.h"
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#include "usbh.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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//D1...D0: Logical Power Switching Mode
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//00: Ganged power switching (all ports’power at
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//once)
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//01: Individual port power switching
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//1X: Reserved. Used only on 1.0 compliant hubs
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//that implement no power switching
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//D2: Identifies a Compound Device
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//0: Hub is not part of a compound device.
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//1: Hub is part of a compound device.
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//D4...D3: Over-current Protection Mode
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//00: Global Over-current Protection. The hub
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//reports over-current as a summation of all
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//ports’current draw, without a breakdown of
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//individual port over-current status.
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//01: Individual Port Over-current Protection. The
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//hub reports over-current on a per-port basis.
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//Each port has an over-current status.
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//1X: No Over-current Protection. This option is
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//allowed only for bus-powered hubs that do not
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//implement over-current protection.
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//
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//D6...D5: TT Think TIme
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//00: TT requires at most 8 FS bit times of inter
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//transaction gap on a full-/low-speed
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//downstream bus.
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//01: TT requires at most 16 FS bit times.
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//10: TT requires at most 24 FS bit times.
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//11: TT requires at most 32 FS bit times.
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//D7: Port Indicators Supported
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//0: Port Indicators are not supported on its
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//downstream facing ports and the
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//PORT_INDICATOR request has no effect.
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//1: Port Indicators are supported on its
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//downstream facing ports and the
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//PORT_INDICATOR request controls the
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//indicators. See Section 11.5.3.
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//D15...D8: Reserved
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typedef ATTR_PACKED_STRUCT(struct){
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uint8_t bLength ; ///< Size of descriptor
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uint8_t bDescriptorType ; ///< Other_speed_Configuration Type
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uint8_t bNbrPorts;
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uint16_t wHubCharacteristics;
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uint8_t bPwrOn2PwrGood;
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uint8_t bHubContrCurrent;
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uint8_t DeviceRemovable; // bitmap each bit for a port (from bit1)
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uint8_t PortPwrCtrlMask; // just for compatibility, should be 0xff
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} descriptor_hub_desc_t;
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STATIC_ASSERT( sizeof(descriptor_hub_desc_t) == 9, "size is not correct");
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enum {
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HUB_REQUEST_GET_STATUS = 0 ,
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HUB_REQUEST_CLEAR_FEATURE = 1 ,
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HUB_REQUEST_SET_FEATURE = 3 ,
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HUB_REQUEST_GET_DESCRIPTOR = 6 ,
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HUB_REQUEST_SET_DESCRIPTOR = 7 ,
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HUB_REQUEST_CLEAR_TT_BUFFER = 8 ,
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HUB_REQUEST_RESET_TT = 9 ,
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HUB_REQUEST_GET_TT_STATE = 10 ,
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HUB_REQUEST_STOP_TT = 11
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};
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enum {
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HUB_FEATURE_HUB_LOCAL_POWER_CHANGE = 0,
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HUB_FEATURE_HUB_OVER_CURRENT_CHANGE
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};
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enum{
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HUB_FEATURE_PORT_CONNECTION = 0,
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HUB_FEATURE_PORT_ENABLE = 1,
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HUB_FEATURE_PORT_SUSPEND = 2,
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HUB_FEATURE_PORT_OVER_CURRENT = 3,
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HUB_FEATURE_PORT_RESET = 4,
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HUB_FEATURE_PORT_POWER = 8,
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HUB_FEATURE_PORT_LOW_SPEED = 9,
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HUB_FEATURE_PORT_CONNECTION_CHANGE = 16,
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HUB_FEATURE_PORT_ENABLE_CHANGE = 17,
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HUB_FEATURE_PORT_SUSPEND_CHANGE = 18,
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HUB_FEATURE_PORT_OVER_CURRENT_CHANGE = 19,
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HUB_FEATURE_PORT_RESET_CHANGE = 20,
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HUB_FEATURE_PORT_TEST = 21,
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HUB_FEATURE_PORT_INDICATOR = 22
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};
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// data in response of HUB_REQUEST_GET_STATUS, wIndex = 0 (hub)
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typedef struct {
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union{
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ATTR_PACKED_STRUCT(struct) {
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uint16_t local_power_source : 1;
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uint16_t over_current : 1;
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uint16_t : 14;
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};
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uint16_t value;
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} status, status_change;
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} hub_status_response_t;
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STATIC_ASSERT( sizeof(hub_status_response_t) == 4, "size is not correct");
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// data in response of HUB_REQUEST_GET_STATUS, wIndex = Port num
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typedef struct {
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union {
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ATTR_PACKED_STRUCT(struct) {
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uint16_t connect_status : 1;
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uint16_t port_enable : 1;
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uint16_t suspend : 1;
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uint16_t over_current : 1;
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uint16_t reset : 1;
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uint16_t : 3;
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uint16_t port_power : 1;
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uint16_t low_speed_device_attached : 1;
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uint16_t high_speed_device_attached : 1;
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uint16_t port_test_mode : 1;
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uint16_t port_indicator_control : 1;
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uint16_t : 0;
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};
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uint16_t value;
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} status_current, status_change;
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} hub_port_status_response_t;
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STATIC_ASSERT( sizeof(hub_port_status_response_t) == 4, "size is not correct");
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tusb_error_t hub_port_reset_subtask(uint8_t hub_addr, uint8_t hub_port);
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tusb_error_t hub_port_clear_feature_subtask(uint8_t hub_addr, uint8_t hub_port, uint8_t feature);
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tusb_speed_t hub_port_get_speed(void);
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tusb_error_t hub_status_pipe_queue(uint8_t dev_addr);
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//--------------------------------------------------------------------+
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// USBH-CLASS DRIVER API
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//--------------------------------------------------------------------+
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#ifdef _TINY_USB_SOURCE_FILE_
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void hub_init(void);
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tusb_error_t hub_open_subtask(uint8_t dev_addr, tusb_descriptor_interface_t const *p_interface_desc, uint16_t *p_length) ATTR_WARN_UNUSED_RESULT;
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void hub_isr(pipe_handle_t pipe_hdl, tusb_event_t event, uint32_t xferred_bytes);
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void hub_close(uint8_t dev_addr);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* _TUSB_HUB_H_ */
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/** @} */
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