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/***************************************************************************
* Copyright (c) 2024 Microsoft Corporation
* Copyright (c) 2026-present Eclipse ThreadX contributors
*
* This program and the accompanying materials are made available under the
* terms of the MIT License which is available at
* https://opensource.org/licenses/MIT.
*
* SPDX-License-Identifier: MIT
**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** USBX Component */
/** */
/** OHCI Controller Driver */
/** */
/**************************************************************************/
/**************************************************************************/
/* Include necessary system files. */
#define UX_SOURCE_CODE
#include "ux_api.h"
#include "ux_hcd_ohci.h"
#include "ux_host_stack.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_hcd_ohci_port_status_get PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function will return the status for each port attached to the */
/* root HUB. */
/* */
/* INPUT */
/* */
/* hcd_ohci Pointer to OHCI controller */
/* port_index Port index */
/* */
/* OUTPUT */
/* */
/* port_status */
/* */
/* Status of the root HUB port with the following format: */
/* */
/* bit 0 device connection status */
/* if 0 : no device connected */
/* if 1 : device connected to the port */
/* bit 1 port enable status */
/* if 0 : port disabled */
/* if 1 : port enabled */
/* bit 2 port suspend status */
/* if 0 : port is not suspended */
/* if 1 : port is suspended */
/* bit 3 port overcurrent status */
/* if 0 : port has no overcurrent condition */
/* if 1 : port has overcurrent condition */
/* bit 4 port reset status */
/* if 0 : port is not in reset */
/* if 1 : port is in reset */
/* bit 5 port power status */
/* if 0 : port power is off */
/* if 1 : port power is on */
/* bit 6-7 device attached speed */
/* if 00 : low speed device attached */
/* if 01 : full speed device attached */
/* if 10 : high speed device attached */
/* */
/* CALLS */
/* */
/* _ux_hcd_ohci_register_read Read OHCI register */
/* */
/* CALLED BY */
/* */
/* OHCI Controller Driver */
/* */
/**************************************************************************/
ULONG _ux_hcd_ohci_port_status_get(UX_HCD_OHCI *hcd_ohci, ULONG port_index)
{
ULONG ohci_register_port_status;
ULONG port_status;
/* Check to see if this port is valid on this controller */
if (hcd_ohci -> ux_hcd_ohci_nb_root_hubs < port_index)
{
/* Error trap. */
_ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_HCD, UX_PORT_INDEX_UNKNOWN);
/* If trace is enabled, insert this event into the trace buffer. */
UX_TRACE_IN_LINE_INSERT(UX_TRACE_ERROR, UX_PORT_INDEX_UNKNOWN, port_index, 0, 0, UX_TRACE_ERRORS, 0, 0)
return(UX_PORT_INDEX_UNKNOWN);
}
/* The port is valid, build the status mask for this port. This function
returns a controller agnostic bit field. */
port_status = 0;
ohci_register_port_status = _ux_hcd_ohci_register_read(hcd_ohci, OHCI_HC_RH_PORT_STATUS + port_index);
/* Device Connection Status. */
if (ohci_register_port_status & OHCI_HC_PS_CCS)
port_status |= UX_PS_CCS;
/* Port Enable Status */
if (ohci_register_port_status & OHCI_HC_PS_PES)
port_status |= UX_PS_PES;
/* Port Suspend Status */
if (ohci_register_port_status & OHCI_HC_PS_PSS)
port_status |= UX_PS_PSS;
/* Port Overcurrent Status */
if (ohci_register_port_status & OHCI_HC_PS_POCI)
port_status |= UX_PS_POCI;
/* Port Reset Status */
if (ohci_register_port_status & OHCI_HC_PS_PRS)
port_status |= UX_PS_PRS;
/* Port Power Status */
if (ohci_register_port_status & OHCI_HC_PS_PPS)
port_status |= UX_PS_PPS;
/* Port Device Attached speed. This field is valid only if the CCS bit is active.
On OHCI, only low speed or full speed are available. */
if (ohci_register_port_status & OHCI_HC_PS_CCS)
{
if (ohci_register_port_status & OHCI_HC_PS_LSDA)
port_status |= UX_PS_DS_LS;
else
port_status |= UX_PS_DS_FS;
}
/* Return port status. */
return(port_status);
}
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