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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 */
/** */
/** ASIX Class */
/** */
/**************************************************************************/
/**************************************************************************/
/* Include necessary system files. */
#define UX_SOURCE_CODE
#include "ux_api.h"
#include "ux_host_class_asix.h"
#include "ux_host_stack.h"
#if !defined(UX_HOST_STANDALONE)
static inline UINT _ux_host_class_asix_link_up_controls(UX_HOST_CLASS_ASIX *asix);
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_host_class_asix_thread PORTABLE C */
/* 6.2.0 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This is the Asix thread that monitors the link change flag. */
/* */
/* INPUT */
/* */
/* asix Asix instance */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_host_stack_transfer_request Transfer request */
/* _ux_host_semaphore_get Get semaphore */
/* _ux_host_semaphore_put Put semaphore */
/* _ux_utility_memory_allocate Allocate memory */
/* _ux_utility_memory_free Free memory */
/* _ux_utility_memory_set Set memory */
/* _ux_network_driver_activate Activate NetX USB interface */
/* _ux_network_driver_link_down Set state to link down */
/* _ux_network_driver_link_up Set state to link up */
/* nx_packet_allocate Allocate NetX packet */
/* nx_packet_transmit_release Release NetX packet */
/* */
/* CALLED BY */
/* */
/* Asix class initialization */
/* */
/**************************************************************************/
VOID _ux_host_class_asix_thread(ULONG parameter)
{
UX_HOST_CLASS_ASIX *asix;
UX_TRANSFER *transfer_request;
NX_PACKET *packet;
NX_PACKET *current_packet;
NX_PACKET *next_packet;
UCHAR *buffer;
ULONG buffer_count;
ULONG asix_length;
ULONG asix_count;
ULONG asix_remain;
ULONG packet_discard;
ULONG buffer_remain;
ULONG copy_length;
UINT status;
UX_DEVICE *device;
ULONG available0, available1;
USB_NETWORK_DEVICE_TYPE *ux_nx_device;
/* Cast the parameter passed in the thread into the asix pointer. */
UX_THREAD_EXTENSION_PTR_GET(asix, UX_HOST_CLASS_ASIX, parameter)
/* Loop forever waiting for changes signaled through the semaphore. */
while (1)
{
/* Wait for the semaphore to be put by the asix interrupt event. */
status = _ux_host_semaphore_get(&asix -> ux_host_class_asix_interrupt_notification_semaphore, UX_WAIT_FOREVER);
/* Check for successful completion. */
if (status != UX_SUCCESS)
return;
/* Protect Thread reentry to this instance. */
status = _ux_host_semaphore_get(&asix -> ux_host_class_asix_semaphore, UX_WAIT_FOREVER);
/* Check for successful completion. */
if (status != UX_SUCCESS)
return;
/* Check the link state. It is either pending up or down. */
if (asix -> ux_host_class_asix_link_state == UX_HOST_CLASS_ASIX_LINK_STATE_PENDING_UP)
{
/* Issue a list of control requests to setup link up. */
status = _ux_host_class_asix_link_up_controls(asix);
if (status != UX_SUCCESS)
{
/* Unprotect thread reentry to this instance. */
_ux_host_semaphore_put(&asix -> ux_host_class_asix_semaphore);
continue;
}
/* Now the link is up. */
asix -> ux_host_class_asix_link_state = UX_HOST_CLASS_ASIX_LINK_STATE_UP;
/* Communicate the state with the network driver. */
_ux_network_driver_link_up(asix -> ux_host_class_asix_network_handle);
/* Reactivate interrupt notification polling. */
_ux_host_stack_transfer_request(&asix -> ux_host_class_asix_interrupt_endpoint -> ux_endpoint_transfer_request);
/* Unprotect thread reentry to this instance. */
_ux_host_semaphore_put(&asix -> ux_host_class_asix_semaphore);
/* Re-check packet pool on link up. */
asix -> ux_host_class_asix_packet_pool = UX_NULL;
/* Keep polling if device is connected and link is up. */
/* Initialize variables. */
device = asix -> ux_host_class_asix_device;
packet = UX_NULL;
buffer = UX_NULL;
asix_length = 0;
asix_count = 0;
buffer_count = 0;
packet_discard = UX_FALSE;
asix -> ux_host_class_asix_packet_available_min = 0xFFFFFFFF;
/* Polling loop. */
while(device -> ux_device_state == UX_DEVICE_CONFIGURED &&
asix -> ux_host_class_asix_link_state == UX_HOST_CLASS_ASIX_LINK_STATE_UP)
{
/* Check if packet pool is ready. */
if (asix -> ux_host_class_asix_packet_pool == UX_NULL)
{
/* Get the network device handle. */
ux_nx_device = (USB_NETWORK_DEVICE_TYPE *)(asix -> ux_host_class_asix_network_handle);
/* Get packet pool from IP instance (if available). */
if (ux_nx_device -> ux_network_device_ip_instance != UX_NULL)
{
asix -> ux_host_class_asix_packet_pool = ux_nx_device -> ux_network_device_ip_instance -> nx_ip_default_packet_pool;
}
else
{
/* Error trap. */
_ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_CLASS, UX_CLASS_ETH_PACKET_POOL_ERROR);
_ux_utility_delay_ms(UX_HOST_CLASS_ASIX_PACKET_POOL_WAIT);
continue;
}
}
/* Get transfer request for bulk in reception. */
transfer_request = &asix -> ux_host_class_asix_bulk_in_endpoint -> ux_endpoint_transfer_request;
/* If there is no buffer ready, read it. */
if (buffer == UX_NULL)
{
/* Set the data pointer. */
transfer_request -> ux_transfer_request_data_pointer = asix -> ux_host_class_asix_receive_buffer;
/* And length. */
transfer_request -> ux_transfer_request_requested_length = UX_HOST_CLASS_ASIX_RECEIVE_BUFFER_SIZE;
transfer_request -> ux_transfer_request_actual_length = 0;
/* Schedule a reception. */
status = _ux_host_stack_transfer_request(transfer_request);
/* Check if it's started successfully. */
if (status != UX_SUCCESS)
{
/* If a packet (chain) is on-going, release it. */
if (packet != UX_NULL)
{
nx_packet_release(packet);
packet = UX_NULL;
}
continue;
}
/* Wait for transfer completion. */
_ux_host_semaphore_get_norc(&transfer_request -> ux_transfer_request_semaphore, UX_WAIT_FOREVER);
/* Check completion code. */
if (transfer_request -> ux_transfer_request_completion_code != UX_SUCCESS)
{
/* Abort transfer. */
_ux_host_stack_transfer_request_abort(transfer_request);
/* If a packet (chain) is on-going, release it. */
if (packet != UX_NULL)
{
nx_packet_release(packet);
packet = UX_NULL;
}
continue;
}
/* If it's ZLP, reset buffer and ASIX packet and transfer again. */
if (transfer_request -> ux_transfer_request_actual_length == 0)
{
/* Packet should have been processed! */
if (packet != UX_NULL)
{
/* ASIX header corrupt? */
_ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_CLASS, UX_DESCRIPTOR_CORRUPTED);
nx_packet_release(packet);
packet = UX_NULL;
}
buffer = UX_NULL;
buffer_count = 0;
asix_length = 0;
continue;
}
/* Buffer is ready. */
buffer = asix -> ux_host_class_asix_receive_buffer;
}
/* There is data in buffer, extract the data to packets. */
/* If there is no packet, allocate it. */
if (packet == UX_NULL)
{
/* Get a free NX Packet. */
available0 = asix -> ux_host_class_asix_packet_pool -> nx_packet_pool_available;
status = nx_packet_allocate(asix -> ux_host_class_asix_packet_pool,
&packet, NX_RECEIVE_PACKET,
UX_MS_TO_TICK(UX_HOST_CLASS_ASIX_PACKET_ALLOCATE_WAIT));
available1 = asix -> ux_host_class_asix_packet_pool -> nx_packet_pool_available;
if (asix -> ux_host_class_asix_packet_available_min > available1)
asix -> ux_host_class_asix_packet_available_min = available1;
if (asix -> ux_host_class_asix_packet_available_min > available0)
asix -> ux_host_class_asix_packet_available_min = available0;
if (status != NX_SUCCESS)
{
/* Error trap. */
_ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_CLASS, UX_CLASS_ETH_PACKET_ERROR);
continue;
}
/* Adjust the prepend pointer to take into account the non 3 bit alignment of the ethernet header. */
packet -> nx_packet_prepend_ptr += sizeof(USHORT);
packet -> nx_packet_append_ptr = packet -> nx_packet_prepend_ptr;
/* Log the packet. */
}
/* Get remaining in buffer. */
buffer_remain = transfer_request -> ux_transfer_request_actual_length -
buffer_count;
/* For new packet, get packet length from ASIX header. */
if (asix_length == 0)
{
/* If remaining less than 2 bytes in buffer, read buffer again. */
if (buffer_remain < 2)
{
buffer = UX_NULL;
buffer_count = 0;
continue;
}
/* Get ASIX packet length. */
asix_length = _ux_utility_short_get(buffer + buffer_count);
asix_length &= UX_HOST_CLASS_ASIX_RX_PACKET_LENGTH_MASK;
asix_count = 0;
/* If remaining 2-3 bytes, skip 2 of next buffer. */
if (buffer_remain < 4)
{
buffer = UX_NULL;
buffer_count = 2;
continue;
}
/* Skip header in buffer, it's not copied to NX packet. */
buffer_count += 4;
buffer_remain -= 4;
}
/* Get remaining in ASIX packet. */
asix_remain = asix_length - asix_count;
/* Get actual length to process. */
if (asix_remain <= buffer_remain)
copy_length = asix_remain;
else
copy_length = buffer_remain;
/* Check if the data is discarded. */
if (packet_discard == UX_FALSE && copy_length)
{
/* Append data to packet. */
status = nx_packet_data_append(packet,
buffer + buffer_count, copy_length,
asix -> ux_host_class_asix_packet_pool,
UX_MS_TO_TICK(UX_HOST_CLASS_ASIX_PACKET_ALLOCATE_WAIT));
if (status != NX_SUCCESS)
{
/* There is error, this ASIX packet is discarded. */
packet_discard = UX_TRUE;
}
}
/* Update counts. */
buffer_count += copy_length;
asix_count += copy_length;
/* If packet size is odd, padding one byte is ignored. */
if (asix_length & 0x1u)
buffer_count ++;
/* Check if buffer ends. */
if (buffer_count >= transfer_request -> ux_transfer_request_actual_length)
{
buffer = UX_NULL;
buffer_count = 0;
}
/* Check if ASIX packet ends.
* - ASIX count achieve its length.
* - Buffer achieve its end and it's a short packet.
*/
if (asix_count >= asix_length ||
(buffer == UX_NULL &&
transfer_request -> ux_transfer_request_actual_length <
transfer_request -> ux_transfer_request_requested_length))
{
/* Check if packet is discarded. */
if (packet_discard)
{
packet_discard = UX_FALSE;
/* Re-allocate packet. */
nx_packet_release(packet);
packet = UX_NULL;
continue;
}
/* Send that packet to the NetX USB broker. */
_ux_network_driver_packet_received(asix -> ux_host_class_asix_network_handle, packet);
packet = UX_NULL;
/* Reset ASIX packet. */
asix_length = 0;
continue;
}
/* Buffer ends but packet continues. */
/* Buffer already reset to start reception again. */
}
/* Release packet not sent to NX. */
if (packet)
nx_packet_release(packet);
}
else
{
/* Abort pending transfers. */
_ux_host_stack_endpoint_transfer_abort(asix -> ux_host_class_asix_bulk_out_endpoint);
/* We need to free the packets that will not be sent. */
current_packet = asix -> ux_host_class_asix_xmit_queue;
/* Get the next packet associated with the first packet. */
if(current_packet != UX_NULL)
next_packet = current_packet -> nx_packet_queue_next;
else
next_packet = UX_NULL;
/* Parse all these packets that were scheduled. */
while (current_packet != UX_NULL)
{
/* Free the packet that was just sent. First do some housekeeping. */
current_packet -> nx_packet_prepend_ptr = current_packet -> nx_packet_prepend_ptr + UX_HOST_CLASS_ASIX_ETHERNET_SIZE;
current_packet -> nx_packet_length = current_packet -> nx_packet_length - UX_HOST_CLASS_ASIX_ETHERNET_SIZE;
/* And ask Netx to release it. */
nx_packet_transmit_release(current_packet);
/* Next packet becomes the current one. */
current_packet = next_packet;
/* Next packet now. */
if (current_packet != UX_NULL)
/* Get the next packet associated with the first packet. */
next_packet = current_packet -> nx_packet_queue_next;
}
/* Communicate the state with the network driver. */
_ux_network_driver_link_down(asix -> ux_host_class_asix_network_handle);
/* Now the link is down. */
asix -> ux_host_class_asix_link_state = UX_HOST_CLASS_ASIX_LINK_STATE_DOWN;
/* Reactivate interrupt notification polling. */
_ux_host_stack_transfer_request(&asix -> ux_host_class_asix_interrupt_endpoint -> ux_endpoint_transfer_request);
/* Unprotect thread reentry to this instance. */
_ux_host_semaphore_put(&asix -> ux_host_class_asix_semaphore);
}
}
}
static inline UINT _ux_host_class_asix_link_up_controls(UX_HOST_CLASS_ASIX *asix)
{
UCHAR *setup_buffer;
UX_ENDPOINT *control_endpoint;
UX_TRANSFER *transfer_request;
UINT status;
/* We need to get the default control endpoint transfer request pointer. */
control_endpoint = &asix -> ux_host_class_asix_device -> ux_device_control_endpoint;
transfer_request = &control_endpoint -> ux_endpoint_transfer_request;
/* Need to allocate memory for the buffer. */
setup_buffer = _ux_utility_memory_allocate(UX_SAFE_ALIGN, UX_CACHE_SAFE_MEMORY, UX_HOST_CLASS_ASIX_SETUP_BUFFER_SIZE);
if (setup_buffer == UX_NULL)
return(UX_MEMORY_INSUFFICIENT);
/* Request ownership of Serial Management Interface. */
transfer_request -> ux_transfer_request_data_pointer = UX_NULL;
transfer_request -> ux_transfer_request_requested_length = 0;
transfer_request -> ux_transfer_request_function = UX_HOST_CLASS_ASIX_REQ_OWN_SMI ;
transfer_request -> ux_transfer_request_type = UX_REQUEST_OUT | UX_REQUEST_TYPE_VENDOR | UX_REQUEST_TARGET_DEVICE;
transfer_request -> ux_transfer_request_value = 0;
transfer_request -> ux_transfer_request_index = 0;
/* Send request to HCD layer. */
status = _ux_host_stack_transfer_request(transfer_request);
/* Check status, if error, do not proceed. */
if (status != UX_SUCCESS || transfer_request -> ux_transfer_request_completion_code != UX_SUCCESS)
{
/* Free all used resources. */
_ux_utility_memory_free(setup_buffer);
return(UX_TRANSFER_ERROR);
}
/* Get the value of the PHYIDR1 in the PHY register. */
transfer_request -> ux_transfer_request_data_pointer = setup_buffer;
transfer_request -> ux_transfer_request_requested_length = 2;
transfer_request -> ux_transfer_request_function = UX_HOST_CLASS_ASIX_REQ_READ_PHY_REG;
transfer_request -> ux_transfer_request_type = UX_REQUEST_IN | UX_REQUEST_TYPE_VENDOR | UX_REQUEST_TARGET_DEVICE;
transfer_request -> ux_transfer_request_value = asix -> ux_host_class_asix_primary_phy_id;
transfer_request -> ux_transfer_request_index = UX_HOST_CLASS_ASIX_PHY_REG_ANLPAR;
/* Send request to HCD layer. */
status = _ux_host_stack_transfer_request(transfer_request);
/* Check status, if error, do not proceed. */
if (status != UX_SUCCESS || transfer_request -> ux_transfer_request_completion_code != UX_SUCCESS ||
transfer_request -> ux_transfer_request_actual_length != 2)
{
/* Free all used resources. */
_ux_utility_memory_free(setup_buffer);
return(UX_TRANSFER_ERROR);
}
/* Release SMI ownership. */
transfer_request -> ux_transfer_request_data_pointer = UX_NULL;
transfer_request -> ux_transfer_request_requested_length = 0;
transfer_request -> ux_transfer_request_function = UX_HOST_CLASS_ASIX_REQ_RELEASE_SMI;
transfer_request -> ux_transfer_request_type = UX_REQUEST_OUT | UX_REQUEST_TYPE_VENDOR | UX_REQUEST_TARGET_DEVICE;
transfer_request -> ux_transfer_request_value = 0;
transfer_request -> ux_transfer_request_index = 0;
/* Send request to HCD layer. */
status = _ux_host_stack_transfer_request(transfer_request);
/* Check status, if error, do not proceed. */
if (status != UX_SUCCESS || transfer_request -> ux_transfer_request_completion_code != UX_SUCCESS)
{
/* Free all used resources. */
_ux_utility_memory_free(setup_buffer);
return(UX_TRANSFER_ERROR);
}
/* Check speed. */
if (asix -> ux_host_class_asix_speed_selected == UX_HOST_CLASS_ASIX_SPEED_SELECTED_100MPBS)
/* Set speed at 100MBPS. */
transfer_request -> ux_transfer_request_value = UX_HOST_CLASS_ASIX_MEDIUM_PS;
/* Write the value of the Medium Mode. */
transfer_request -> ux_transfer_request_data_pointer = UX_NULL;
transfer_request -> ux_transfer_request_requested_length = 0;
transfer_request -> ux_transfer_request_function = UX_HOST_CLASS_ASIX_REQ_WRITE_MEDIUM_MODE;
transfer_request -> ux_transfer_request_type = UX_REQUEST_OUT | UX_REQUEST_TYPE_VENDOR | UX_REQUEST_TARGET_DEVICE;
transfer_request -> ux_transfer_request_value |= (UX_HOST_CLASS_ASIX_MEDIUM_FD | UX_HOST_CLASS_ASIX_MEDIUM_BIT2 | UX_HOST_CLASS_ASIX_MEDIUM_RFC_ENABLED |
UX_HOST_CLASS_ASIX_MEDIUM_TFC_ENABLED | UX_HOST_CLASS_ASIX_MEDIUM_RE_ENABLED);
transfer_request -> ux_transfer_request_index = 0;
/* Send request to HCD layer. */
status = _ux_host_stack_transfer_request(transfer_request);
/* Check status, if error, do not proceed. */
if (status != UX_SUCCESS || transfer_request -> ux_transfer_request_completion_code != UX_SUCCESS)
{
/* Free all used resources. */
_ux_utility_memory_free(setup_buffer);
return(UX_TRANSFER_ERROR);
}
/* Set the Rx Control register value. */
transfer_request -> ux_transfer_request_data_pointer = UX_NULL;
transfer_request -> ux_transfer_request_requested_length = 0;
transfer_request -> ux_transfer_request_function = UX_HOST_CLASS_ASIX_REQ_WRITE_RX_CTL;
transfer_request -> ux_transfer_request_type = UX_REQUEST_OUT | UX_REQUEST_TYPE_VENDOR | UX_REQUEST_TARGET_DEVICE;
transfer_request -> ux_transfer_request_value = (UX_HOST_CLASS_ASIX_RXCR_AM | UX_HOST_CLASS_ASIX_RXCR_AB |
UX_HOST_CLASS_ASIX_RXCR_SO | UX_HOST_CLASS_ASIX_RXCR_MFB_2048);
transfer_request -> ux_transfer_request_index = 0;
/* Send request to HCD layer. */
status = _ux_host_stack_transfer_request(transfer_request);
/* Check status, if error, do not proceed. */
if (status != UX_SUCCESS || transfer_request -> ux_transfer_request_completion_code != UX_SUCCESS)
{
/* Free all used resources. */
_ux_utility_memory_free(setup_buffer);
return(UX_TRANSFER_ERROR);
}
/* Set the multicast value. */
transfer_request -> ux_transfer_request_data_pointer = setup_buffer;
transfer_request -> ux_transfer_request_requested_length = 8;
transfer_request -> ux_transfer_request_function = UX_HOST_CLASS_ASIX_REQ_WRITE_MULTICAST_FILTER;
transfer_request -> ux_transfer_request_type = UX_REQUEST_OUT | UX_REQUEST_TYPE_VENDOR | UX_REQUEST_TARGET_DEVICE;
transfer_request -> ux_transfer_request_value = 0;
transfer_request -> ux_transfer_request_index = 0;
/* Fill in the multicast filter. */
_ux_utility_memory_set(setup_buffer, 0, 8); /* Use case of memset is verified. */
*(setup_buffer +1) = 0x40;
/* Send request to HCD layer. */
status = _ux_host_stack_transfer_request(transfer_request);
/* Check status, if error, do not proceed. */
if (status != UX_SUCCESS || transfer_request -> ux_transfer_request_completion_code != UX_SUCCESS ||
transfer_request -> ux_transfer_request_actual_length != 8)
{
/* Free all used resources. */
_ux_utility_memory_free(setup_buffer);
return(UX_TRANSFER_ERROR);
}
/* Free all used resources. */
_ux_utility_memory_free(setup_buffer);
return(UX_SUCCESS);
}
#endif
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