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 /**************************************************************************/
33 /* */
34 /* FUNCTION RELEASE */
35 /* */
36 /* _ux_dcd_sim_slave_endpoint_create PORTABLE C */
37 /* 6.1.6 */
38 /* AUTHOR */
39 /* */
40 /* Chaoqiong Xiao, Microsoft Corporation */
41 /* */
42 /* DESCRIPTION */
43 /* */
44 /* This function will create a physical endpoint. */
45 /* */
46 /* INPUT */
47 /* */
48 /* dcd_sim_slave Pointer to device controller */
49 /* endpoint Pointer to endpoint container */
50 /* */
51 /* OUTPUT */
52 /* */
53 /* Completion Status */
54 /* */
55 /* CALLS */
56 /* */
57 /* None */
58 /* */
59 /* CALLED BY */
60 /* */
61 /* Slave Simulator Controller Driver */
62 /* */
63 /* RELEASE HISTORY */
64 /* */
65 /* DATE NAME DESCRIPTION */
66 /* */
67 /* 05-19-2020 Chaoqiong Xiao Initial Version 6.0 */
68 /* 09-30-2020 Chaoqiong Xiao Modified comment(s), */
69 /* resulting in version 6.1 */
70 /* 04-02-2021 Chaoqiong Xiao Modified comment(s), */
71 /* supported bi-dir-endpoints, */
72 /* resulting in version 6.1.6 */
73 /* */
74 /**************************************************************************/
_ux_dcd_sim_slave_endpoint_create(UX_DCD_SIM_SLAVE * dcd_sim_slave,UX_SLAVE_ENDPOINT * endpoint)75 UINT _ux_dcd_sim_slave_endpoint_create(UX_DCD_SIM_SLAVE *dcd_sim_slave, UX_SLAVE_ENDPOINT *endpoint)
76 {
77
78 UX_DCD_SIM_SLAVE_ED *ed;
79 ULONG sim_slave_endpoint_index;
80
81
82 /* The simulator slave controller has 16 endpoints maximum. Endpoint 0 is always control.
83 The other endpoints are generic. We can use the endpoint number as an index. */
84 sim_slave_endpoint_index = endpoint ->ux_slave_endpoint_descriptor.bEndpointAddress & ~(ULONG)UX_ENDPOINT_DIRECTION;
85
86 /* Fetch the address of the physical endpoint. */
87 #ifdef UX_DEVICE_BIDIRECTIONAL_ENDPOINT_SUPPORT
88 ed = ((endpoint -> ux_slave_endpoint_descriptor.bEndpointAddress == 0) ?
89 &dcd_sim_slave -> ux_dcd_sim_slave_ed[0] :
90 ((endpoint -> ux_slave_endpoint_descriptor.bEndpointAddress & UX_ENDPOINT_DIRECTION) ?
91 &dcd_sim_slave -> ux_dcd_sim_slave_ed_in[sim_slave_endpoint_index] :
92 &dcd_sim_slave -> ux_dcd_sim_slave_ed[sim_slave_endpoint_index]));
93 #else
94 ed = &dcd_sim_slave -> ux_dcd_sim_slave_ed[sim_slave_endpoint_index];
95 #endif
96
97 /* Check the endpoint status, if it is free, reserve it. If not reject this endpoint. */
98 if ((ed -> ux_sim_slave_ed_status & UX_DCD_SIM_SLAVE_ED_STATUS_USED) == 0)
99 {
100
101 /* We can use this endpoint. */
102 ed -> ux_sim_slave_ed_status |= UX_DCD_SIM_SLAVE_ED_STATUS_USED;
103
104 /* Keep the physical endpoint address in the endpoint container. */
105 endpoint -> ux_slave_endpoint_ed = (VOID *) ed;
106
107 /* And its mask. */
108 ed -> ux_sim_slave_ed_index = sim_slave_endpoint_index;
109
110 /* Save the endpoint pointer. */
111 ed -> ux_sim_slave_ed_endpoint = endpoint;
112
113 /* If this is endpoint 0, it is always ready for transactions. */
114 if ( sim_slave_endpoint_index == 0)
115 ed -> ux_sim_slave_ed_status |= UX_DCD_SIM_SLAVE_ED_STATUS_TRANSFER;
116
117 /* Enable this endpoint. */
118 return(UX_SUCCESS);
119 }
120
121 /* Notify application. */
122 _ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_DCD, UX_MEMORY_INSUFFICIENT);
123
124 /* Return error to caller. */
125 return(UX_NO_ED_AVAILABLE);
126 }
127
128
