1 /*!
2     \file    usbh_core.h
3     \brief   header file for the usbh_core.c
4 
5     \version 2020-08-04, V1.1.0, firmware for GD32VF103
6 */
7 
8 /*
9     Copyright (c) 2020, GigaDevice Semiconductor Inc.
10 
11     Redistribution and use in source and binary forms, with or without modification,
12 are permitted provided that the following conditions are met:
13 
14     1. Redistributions of source code must retain the above copyright notice, this
15        list of conditions and the following disclaimer.
16     2. Redistributions in binary form must reproduce the above copyright notice,
17        this list of conditions and the following disclaimer in the documentation
18        and/or other materials provided with the distribution.
19     3. Neither the name of the copyright holder nor the names of its contributors
20        may be used to endorse or promote products derived from this software without
21        specific prior written permission.
22 
23     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
24 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
25 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
27 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
29 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
30 WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
32 OF SUCH DAMAGE.
33 */
34 
35 #ifndef __USBH_MSC_CORE_H
36 #define __USBH_MSC_CORE_H
37 
38 #include "usb_msc.h"
39 #include "usbh_msc_scsi.h"
40 #include "usbh_msc_bbb.h"
41 
42 #define MSC_MAX_SUPPORTED_LUN                   2U
43 
44 typedef enum
45 {
46     MSC_INIT = 0U,
47     MSC_IDLE,
48     MSC_TEST_UNIT_READY,
49     MSC_READ_CAPACITY10,
50     MSC_READ_INQUIRY,
51     MSC_REQUEST_SENSE,
52     MSC_READ,
53     MSC_WRITE,
54     MSC_UNRECOVERED_ERROR,
55     MSC_PERIODIC_CHECK,
56 } msc_state;
57 
58 typedef enum
59 {
60     MSC_OK,
61     MSC_NOT_READY,
62     MSC_ERROR,
63 } msc_error;
64 
65 typedef enum
66 {
67     MSC_REQ_IDLE = 0U,
68     MSC_REQ_RESET,
69     MSC_REQ_GET_MAX_LUN,
70     MSC_REQ_ERROR,
71 } msc_req_state;
72 
73 /* Structure for LUN */
74 typedef struct
75 {
76     msc_state               state;
77     msc_error               error;
78     msc_scsi_sense          sense;
79     scsi_capacity           capacity;
80     scsi_std_inquiry_data   inquiry;
81     usbh_status             prev_ready_state;
82     uint8_t                 state_changed;
83 } msc_lun;
84 
85 /* structure for msc process */
86 typedef struct _msc_process
87 {
88     uint8_t         pipe_in;
89     uint8_t         pipe_out;
90     uint8_t         ep_in;
91     uint8_t         ep_out;
92     uint16_t        ep_size_in;
93     uint16_t        ep_size_out;
94     uint8_t         cur_lun;
95     uint16_t        rw_lun;
96     uint32_t        max_lun;
97     msc_state       state;
98     msc_error       error;
99     msc_req_state   req_state;
100     msc_req_state   prev_req_state;
101     bot_handle      bot;
102     msc_lun         unit[MSC_MAX_SUPPORTED_LUN];
103     uint32_t        timer;
104 } usbh_msc_handler;
105 
106 extern usbh_class usbh_msc;
107 
108 /* function declarations */
109 /* get msc logic unit information */
110 usbh_status usbh_msc_lun_info_get (usbh_host *puhost, uint8_t lun, msc_lun *info);
111 /* msc read interface */
112 usbh_status usbh_msc_read (usbh_host *puhost,
113                            uint8_t lun,
114                            uint32_t address,
115                            uint8_t *pbuf,
116                            uint32_t length);
117 /* msc write interface */
118 usbh_status usbh_msc_write (usbh_host *puhost,
119                             uint8_t lun,
120                             uint32_t address,
121                             uint8_t *pbuf,
122                             uint32_t length);
123 
124 #endif  /* __USBH_MSC_CORE_H */
125