1 /**************************************************************************/
2 /* */
3 /* Copyright (c) Microsoft Corporation. All rights reserved. */
4 /* */
5 /* This software is licensed under the Microsoft Software License */
6 /* Terms for Microsoft Azure RTOS. Full text of the license can be */
7 /* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
8 /* and in the root directory of this software. */
9 /* */
10 /**************************************************************************/
11
12
13 /**************************************************************************/
14 /**************************************************************************/
15 /** */
16 /** USBX Component */
17 /** */
18 /** Host Simulator Controller Driver */
19 /** */
20 /**************************************************************************/
21 /**************************************************************************/
22
23 #define UX_SOURCE_CODE
24
25
26 /* Include necessary system files. */
27
28 #include "ux_api.h"
29 #include "ux_hcd_sim_host.h"
30
31
32 #if !defined(UX_HOST_STANDALONE)
33 /**************************************************************************/
34 /* */
35 /* FUNCTION RELEASE */
36 /* */
37 /* _ux_hcd_sim_host_request_transfer PORTABLE C */
38 /* 6.1.10 */
39 /* AUTHOR */
40 /* */
41 /* Chaoqiong Xiao, Microsoft Corporation */
42 /* */
43 /* DESCRIPTION */
44 /* */
45 /* This function is the handler for all the transactions on the USB. */
46 /* The transfer request passed as parameter contains the endpoint and */
47 /* the device descriptors in addition to the type of transaction de */
48 /* be executed. This function routes the transfer request to */
49 /* according to the type of transfer to be executed. */
50 /* */
51 /* INPUT */
52 /* */
53 /* hcd_sim_host Pointer to host controller */
54 /* transfer_request Pointer to transfer request */
55 /* */
56 /* OUTPUT */
57 /* */
58 /* Completion Status */
59 /* */
60 /* CALLS */
61 /* */
62 /* _ux_hcd_sim_host_request_bulk_transfer Request bulk transfer */
63 /* _ux_hcd_sim_host_request_control_transfer Request control */
64 /* transfer */
65 /* _ux_hcd_sim_host_request_interrupt_transfer Request interrupt */
66 /* transfer */
67 /* _ux_hcd_sim_host_request_isochronous_transfer Request isochronous */
68 /* transfer */
69 /* */
70 /* CALLED BY */
71 /* */
72 /* Host Simulator Controller Driver */
73 /* */
74 /* RELEASE HISTORY */
75 /* */
76 /* DATE NAME DESCRIPTION */
77 /* */
78 /* 05-19-2020 Chaoqiong Xiao Initial Version 6.0 */
79 /* 09-30-2020 Chaoqiong Xiao Modified comment(s), */
80 /* resulting in version 6.1 */
81 /* 01-31-2022 Chaoqiong Xiao Modified comment(s), */
82 /* added standalone support, */
83 /* resulting in version 6.1.10 */
84 /* */
85 /**************************************************************************/
_ux_hcd_sim_host_request_transfer(UX_HCD_SIM_HOST * hcd_sim_host,UX_TRANSFER * transfer_request)86 UINT _ux_hcd_sim_host_request_transfer(UX_HCD_SIM_HOST *hcd_sim_host, UX_TRANSFER *transfer_request)
87 {
88
89 UX_ENDPOINT *endpoint;
90 UINT status = 0;
91
92
93 /* Get the pointer to the Endpoint. */
94 endpoint = (UX_ENDPOINT *) transfer_request -> ux_transfer_request_endpoint;
95
96 /* We reset the actual length field of the transfer request as a safety measure. */
97 transfer_request -> ux_transfer_request_actual_length = 0;
98
99 /* Isolate the endpoint type and route the transfer request. */
100 switch ((endpoint -> ux_endpoint_descriptor.bmAttributes) & UX_MASK_ENDPOINT_TYPE)
101 {
102
103 case UX_CONTROL_ENDPOINT:
104
105 status = _ux_hcd_sim_host_request_control_transfer(hcd_sim_host, transfer_request);
106 break;
107
108
109 case UX_BULK_ENDPOINT:
110
111 status = _ux_hcd_sim_host_request_bulk_transfer(hcd_sim_host, transfer_request);
112 break;
113
114 case UX_INTERRUPT_ENDPOINT:
115
116 status = _ux_hcd_sim_host_request_interrupt_transfer(hcd_sim_host, transfer_request);
117 break;
118
119 case UX_ISOCHRONOUS_ENDPOINT:
120
121 status = _ux_hcd_sim_host_request_isochronous_transfer(hcd_sim_host, transfer_request);
122 break;
123
124 }
125
126 /* Note that it is physically impossible to have a wrong endpoint type here
127 so no error checking. */
128 return(status);
129 }
130 #endif
131
