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