blob: 4bacf37c53ff8d5ca97712f1c77613d8a6dd8863 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
/***************************************************************************
* 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 */
/** */
/** EHCI Controller Driver */
/** */
/**************************************************************************/
/**************************************************************************/
/* Include necessary system files. */
#define UX_SOURCE_CODE
#include "ux_api.h"
#include "ux_hcd_ehci.h"
#include "ux_host_stack.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_hcd_ehci_request_transfer PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function is the handler for all the transactions on the USB. */
/* The transfer request passed as parameter contains the endpoint and */
/* the device descriptors in addition to the type of transaction de */
/* be executed. */
/* */
/* This function routes the transfer_request to according to the type */
/* of transfer to be executed. */
/* */
/* INPUT */
/* */
/* hcd_ehci Pointer to EHCI controller */
/* transfer_request Pointer to transfer request */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_hcd_ehci_request_control_transfer Start control transfer */
/* _ux_hcd_ehci_request_bulk_transfer Start bulk transfer */
/* _ux_hcd_ehci_request_interrupt_transfer Start interrupt transfer */
/* _ux_hcd_ehci_request_isochronous_transfer Start iso transfer */
/* */
/* CALLED BY */
/* */
/* EHCI Controller Driver */
/* */
/**************************************************************************/
UINT _ux_hcd_ehci_request_transfer(UX_HCD_EHCI *hcd_ehci, UX_TRANSFER *transfer_request)
{
UX_ENDPOINT *endpoint;
UINT status;
/* Get the pointer to the Endpoint. */
endpoint = (UX_ENDPOINT *) transfer_request -> ux_transfer_request_endpoint;
/* We reset the actual length field of the transfer request as a safety measure. */
transfer_request -> ux_transfer_request_actual_length = 0;
/* Isolate the endpoint type and route the transfer request. */
switch ((endpoint -> ux_endpoint_descriptor.bmAttributes) & UX_MASK_ENDPOINT_TYPE)
{
case UX_CONTROL_ENDPOINT:
status = _ux_hcd_ehci_request_control_transfer(hcd_ehci, transfer_request);
break;
case UX_BULK_ENDPOINT:
status = _ux_hcd_ehci_request_bulk_transfer(hcd_ehci, transfer_request);
break;
case UX_INTERRUPT_ENDPOINT:
status = _ux_hcd_ehci_request_interrupt_transfer(hcd_ehci, transfer_request);
break;
case UX_ISOCHRONOUS_ENDPOINT:
status = _ux_hcd_ehci_request_isochronous_transfer(hcd_ehci, transfer_request);
break;
}
/* Note that it is physically impossible to have a wrong endpoint type here
so no error checking. */
return(status);
}
|
