1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef __TARGET_USB_GADGET_H__ |
3 | #define __TARGET_USB_GADGET_H__ |
4 | |
5 | #include <linux/kref.h> |
6 | /* #include <linux/usb/uas.h> */ |
7 | #include <linux/usb/composite.h> |
8 | #include <linux/usb/uas.h> |
9 | #include <linux/usb/storage.h> |
10 | #include <target/target_core_base.h> |
11 | #include <target/target_core_fabric.h> |
12 | |
13 | #define USBG_NAMELEN 32 |
14 | |
15 | #define fuas_to_gadget(f) (f->function.config->cdev->gadget) |
16 | #define UASP_SS_EP_COMP_LOG_STREAMS 4 |
17 | #define UASP_SS_EP_COMP_NUM_STREAMS (1 << UASP_SS_EP_COMP_LOG_STREAMS) |
18 | |
19 | enum { |
20 | USB_G_STR_INT_UAS = 0, |
21 | USB_G_STR_INT_BBB, |
22 | }; |
23 | |
24 | #define USB_G_ALT_INT_BBB 0 |
25 | #define USB_G_ALT_INT_UAS 1 |
26 | |
27 | #define USB_G_DEFAULT_SESSION_TAGS 128 |
28 | |
29 | struct tcm_usbg_nexus { |
30 | struct se_session *tvn_se_sess; |
31 | }; |
32 | |
33 | struct usbg_tpg { |
34 | struct mutex tpg_mutex; |
35 | /* SAS port target portal group tag for TCM */ |
36 | u16 tport_tpgt; |
37 | /* Pointer back to usbg_tport */ |
38 | struct usbg_tport *tport; |
39 | struct workqueue_struct *workqueue; |
40 | /* Returned by usbg_make_tpg() */ |
41 | struct se_portal_group se_tpg; |
42 | u32 gadget_connect; |
43 | struct tcm_usbg_nexus *tpg_nexus; |
44 | atomic_t tpg_port_count; |
45 | |
46 | struct usb_function_instance *fi; |
47 | }; |
48 | |
49 | struct usbg_tport { |
50 | /* Binary World Wide unique Port Name for SAS Target port */ |
51 | u64 tport_wwpn; |
52 | /* ASCII formatted WWPN for SAS Target port */ |
53 | char tport_name[USBG_NAMELEN]; |
54 | /* Returned by usbg_make_tport() */ |
55 | struct se_wwn tport_wwn; |
56 | }; |
57 | |
58 | enum uas_state { |
59 | UASP_SEND_DATA, |
60 | UASP_RECEIVE_DATA, |
61 | UASP_SEND_STATUS, |
62 | UASP_QUEUE_COMMAND, |
63 | }; |
64 | |
65 | #define USBG_MAX_CMD 64 |
66 | struct usbg_cmd { |
67 | /* common */ |
68 | u8 cmd_buf[USBG_MAX_CMD]; |
69 | u32 data_len; |
70 | struct work_struct work; |
71 | int unpacked_lun; |
72 | struct se_cmd se_cmd; |
73 | void *data_buf; /* used if no sg support available */ |
74 | struct f_uas *fu; |
75 | struct completion write_complete; |
76 | struct kref ref; |
77 | |
78 | /* UAS only */ |
79 | u16 tag; |
80 | u16 prio_attr; |
81 | struct sense_iu sense_iu; |
82 | enum uas_state state; |
83 | struct uas_stream *stream; |
84 | |
85 | /* BOT only */ |
86 | __le32 bot_tag; |
87 | unsigned int csw_code; |
88 | unsigned is_read:1; |
89 | |
90 | }; |
91 | |
92 | struct uas_stream { |
93 | struct usb_request *req_in; |
94 | struct usb_request *req_out; |
95 | struct usb_request *req_status; |
96 | }; |
97 | |
98 | struct usbg_cdb { |
99 | struct usb_request *req; |
100 | void *buf; |
101 | }; |
102 | |
103 | struct bot_status { |
104 | struct usb_request *req; |
105 | struct bulk_cs_wrap csw; |
106 | }; |
107 | |
108 | struct f_uas { |
109 | struct usbg_tpg *tpg; |
110 | struct usb_function function; |
111 | u16 iface; |
112 | |
113 | u32 flags; |
114 | #define USBG_ENABLED (1 << 0) |
115 | #define USBG_IS_UAS (1 << 1) |
116 | #define USBG_USE_STREAMS (1 << 2) |
117 | #define USBG_IS_BOT (1 << 3) |
118 | #define USBG_BOT_CMD_PEND (1 << 4) |
119 | |
120 | struct usbg_cdb cmd; |
121 | struct usb_ep *ep_in; |
122 | struct usb_ep *ep_out; |
123 | |
124 | /* UAS */ |
125 | struct usb_ep *ep_status; |
126 | struct usb_ep *ep_cmd; |
127 | struct uas_stream stream[UASP_SS_EP_COMP_NUM_STREAMS]; |
128 | |
129 | /* BOT */ |
130 | struct bot_status bot_status; |
131 | struct usb_request *bot_req_in; |
132 | struct usb_request *bot_req_out; |
133 | }; |
134 | |
135 | #endif /* __TARGET_USB_GADGET_H__ */ |
136 | |