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 /** Slave 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_dcd_sim_slave.h"
30
31
32 #if defined(UX_DEVICE_STANDALONE)
33 /**************************************************************************/
34 /* */
35 /* FUNCTION RELEASE */
36 /* */
37 /* _ux_dcd_sim_slave_transfer_run PORTABLE C */
38 /* 6.1.10 */
39 /* AUTHOR */
40 /* */
41 /* Chaoqiong Xiao, Microsoft Corporation */
42 /* */
43 /* DESCRIPTION */
44 /* */
45 /* This function will initiate a transfer to a specific endpoint. */
46 /* If the endpoint is IN, the endpoint register will be set to accept */
47 /* the request. */
48 /* */
49 /* If the endpoint is IN, the endpoint FIFO will be filled with the */
50 /* buffer and the endpoint register set. */
51 /* */
52 /* It's for standalone mode. */
53 /* */
54 /* INPUT */
55 /* */
56 /* dcd_sim_slave Pointer to device controller */
57 /* transfer_request Pointer to transfer request */
58 /* */
59 /* OUTPUT */
60 /* */
61 /* State machine Status to check */
62 /* UX_STATE_NEXT Transfer done, to next state */
63 /* UX_STATE_EXIT Abnormal, to reset state */
64 /* (others) Keep running, waiting */
65 /* */
66 /* CALLS */
67 /* */
68 /* _ux_utility_semaphore_get Get semaphore */
69 /* _ux_dcd_sim_slave_transfer_abort Abort transfer */
70 /* */
71 /* CALLED BY */
72 /* */
73 /* Slave Simulator Controller Driver */
74 /* */
75 /* RELEASE HISTORY */
76 /* */
77 /* DATE NAME DESCRIPTION */
78 /* */
79 /* 01-31-2022 Chaoqiong Xiao Initial Version 6.1.10 */
80 /* */
81 /**************************************************************************/
_ux_dcd_sim_slave_transfer_run(UX_DCD_SIM_SLAVE * dcd_sim_slave,UX_SLAVE_TRANSFER * transfer_request)82 UINT _ux_dcd_sim_slave_transfer_run(UX_DCD_SIM_SLAVE *dcd_sim_slave, UX_SLAVE_TRANSFER *transfer_request)
83 {
84
85 UX_INTERRUPT_SAVE_AREA
86
87 UX_SLAVE_ENDPOINT *endpoint;
88 UX_DCD_SIM_SLAVE_ED *ed;
89 ULONG ed_status;
90
91
92 UX_PARAMETER_NOT_USED(dcd_sim_slave);
93
94 /* Get the pointer to the logical endpoint from the transfer request. */
95 endpoint = transfer_request -> ux_slave_transfer_request_endpoint;
96
97 /* Get the slave endpoint. */
98 ed = (UX_DCD_SIM_SLAVE_ED *) endpoint -> ux_slave_endpoint_ed;
99
100 UX_DISABLE
101
102 /* Get current status. */
103 ed_status = ed -> ux_sim_slave_ed_status;
104
105 /* ED freed, must disconnected. */
106 if (ed_status == UX_DCD_SIM_SLAVE_ED_STATUS_UNUSED)
107 {
108 transfer_request -> ux_slave_transfer_request_status = UX_TRANSFER_BUS_RESET;
109 UX_RESTORE
110 return(UX_STATE_EXIT);
111 }
112
113 /* For control endpoint, always go to next state. */
114 if(ed -> ux_sim_slave_ed_index == 0)
115 {
116 UX_RESTORE
117 return(UX_STATE_NEXT);
118 }
119
120 /* ED stalled. */
121 if (ed_status & UX_DCD_SIM_SLAVE_ED_STATUS_STALLED)
122 {
123 ed -> ux_sim_slave_ed_status = UX_DCD_SIM_SLAVE_ED_STATUS_USED;
124 transfer_request -> ux_slave_transfer_request_status = UX_TRANSFER_STALLED;
125 UX_RESTORE
126 return(UX_STATE_NEXT);
127 }
128
129 /* Transfer started. */
130 if (ed_status & UX_DCD_SIM_SLAVE_ED_STATUS_TRANSFER)
131 {
132 if (ed_status & UX_DCD_SIM_SLAVE_ED_STATUS_DONE)
133 {
134 ed -> ux_sim_slave_ed_status = UX_DCD_SIM_SLAVE_ED_STATUS_USED;
135 UX_RESTORE
136 return(UX_STATE_NEXT);
137 }
138 UX_RESTORE
139 return(UX_STATE_WAIT);
140 }
141
142 /* Start transfer. */
143 ed->ux_sim_slave_ed_status |= UX_DCD_SIM_SLAVE_ED_STATUS_TRANSFER;
144 UX_RESTORE
145 return(UX_STATE_WAIT);
146
147 }
148 #endif
149
