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_transfer_run 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 /* It's for standalone mode. */
52 /* */
53 /* INPUT */
54 /* */
55 /* hcd_sim_host Pointer to host controller */
56 /* transfer_request Pointer to transfer request */
57 /* */
58 /* OUTPUT */
59 /* */
60 /* Completion Status */
61 /* */
62 /* CALLS */
63 /* */
64 /* _ux_hcd_sim_host_request_bulk_transfer Request bulk transfer */
65 /* _ux_hcd_sim_host_request_control_transfer Request control */
66 /* transfer */
67 /* _ux_hcd_sim_host_request_interrupt_transfer Request interrupt */
68 /* transfer */
69 /* _ux_hcd_sim_host_request_isochronous_transfer Request isochronous */
70 /* transfer */
71 /* */
72 /* CALLED BY */
73 /* */
74 /* Host Simulator Controller Driver */
75 /* */
76 /* RELEASE HISTORY */
77 /* */
78 /* DATE NAME DESCRIPTION */
79 /* */
80 /* 01-31-2022 Chaoqiong Xiao Initial Version 6.1.10 */
81 /* */
82 /**************************************************************************/
_ux_hcd_sim_host_transfer_run(UX_HCD_SIM_HOST * hcd_sim_host,UX_TRANSFER * transfer_request)83 UINT _ux_hcd_sim_host_transfer_run(UX_HCD_SIM_HOST *hcd_sim_host, UX_TRANSFER *transfer_request)
84 {
85
86 UX_INTERRUPT_SAVE_AREA
87 UX_ENDPOINT *endpoint;
88 UX_HCD_SIM_HOST_ED *ed;
89 UINT status = 0;
90
91
92 /* Get the pointer to the Endpoint. */
93 endpoint = (UX_ENDPOINT *) transfer_request -> ux_transfer_request_endpoint;
94
95 /* Sanity check. */
96 if (endpoint == UX_NULL)
97 return(UX_STATE_EXIT);
98
99 /* Get ED. */
100 ed = (UX_HCD_SIM_HOST_ED *)endpoint -> ux_endpoint_ed;
101
102 /* Sanity check. */
103 if (ed == UX_NULL)
104 return(UX_STATE_EXIT);
105
106 UX_DISABLE
107
108 /* If transfer started, check status. */
109 if (ed -> ux_sim_host_ed_status & UX_HCD_SIM_HOST_ED_TRANSFER)
110 {
111 if (ed -> ux_sim_host_ed_head_td != ed -> ux_sim_host_ed_tail_td)
112 {
113 UX_RESTORE
114 return(UX_STATE_WAIT);
115 }
116
117 /* Check if it's transfer waiting state. */
118 if (transfer_request -> ux_transfer_request_status != UX_TRANSFER_STATUS_NOT_PENDING)
119 {
120
121 /* Yes, polling pending status, report and transfer done. */
122 ed -> ux_sim_host_ed_status &= ~UX_HCD_SIM_HOST_ED_TRANSFER;
123 UX_RESTORE
124 return(UX_STATE_NEXT);
125 }
126
127 /* Maybe transfer completed but state not reported yet. */
128 }
129 ed -> ux_sim_host_ed_status |= UX_HCD_SIM_HOST_ED_TRANSFER;
130 transfer_request -> ux_transfer_request_status = UX_TRANSFER_STATUS_PENDING;
131
132 UX_RESTORE
133
134 /* We reset the actual length field of the transfer request as a safety measure. */
135 transfer_request -> ux_transfer_request_actual_length = 0;
136
137 /* Isolate the endpoint type and route the transfer request. */
138 switch ((endpoint -> ux_endpoint_descriptor.bmAttributes) & UX_MASK_ENDPOINT_TYPE)
139 {
140
141 case UX_CONTROL_ENDPOINT:
142
143 status = _ux_hcd_sim_host_request_control_transfer(hcd_sim_host, transfer_request);
144 break;
145
146
147 case UX_BULK_ENDPOINT:
148
149 status = _ux_hcd_sim_host_request_bulk_transfer(hcd_sim_host, transfer_request);
150 break;
151
152 case UX_INTERRUPT_ENDPOINT:
153
154 status = _ux_hcd_sim_host_request_interrupt_transfer(hcd_sim_host, transfer_request);
155 break;
156
157 case UX_ISOCHRONOUS_ENDPOINT:
158
159 status = _ux_hcd_sim_host_request_isochronous_transfer(hcd_sim_host, transfer_request);
160 break;
161
162 }
163
164 return (status == UX_SUCCESS) ? (UX_STATE_WAIT) : (UX_STATE_ERROR);
165 }
166 #endif
167
