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 <scsi/scsi.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
19enum {
20	USB_G_STR_CONFIG = USB_GADGET_FIRST_AVAIL_IDX,
21	USB_G_STR_INT_UAS,
22	USB_G_STR_INT_BBB,
23};
24
25#define USB_G_ALT_INT_BBB       0
26#define USB_G_ALT_INT_UAS       1
27
28struct usbg_nacl {
29	/* Binary World Wide unique Port Name for SAS Initiator port */
30	u64 iport_wwpn;
31	/* ASCII formatted WWPN for Sas Initiator port */
32	char iport_name[USBG_NAMELEN];
33	/* Returned by usbg_make_nodeacl() */
34	struct se_node_acl se_node_acl;
35};
36
37struct tcm_usbg_nexus {
38	struct se_session *tvn_se_sess;
39};
40
41struct usbg_tpg {
42	struct mutex tpg_mutex;
43	/* SAS port target portal group tag for TCM */
44	u16 tport_tpgt;
45	/* Pointer back to usbg_tport */
46	struct usbg_tport *tport;
47	struct workqueue_struct *workqueue;
48	/* Returned by usbg_make_tpg() */
49	struct se_portal_group se_tpg;
50	u32 gadget_connect;
51	struct tcm_usbg_nexus *tpg_nexus;
52	atomic_t tpg_port_count;
53};
54
55struct usbg_tport {
56	/* SCSI protocol the tport is providing */
57	u8 tport_proto_id;
58	/* Binary World Wide unique Port Name for SAS Target port */
59	u64 tport_wwpn;
60	/* ASCII formatted WWPN for SAS Target port */
61	char tport_name[USBG_NAMELEN];
62	/* Returned by usbg_make_tport() */
63	struct se_wwn tport_wwn;
64};
65
66enum uas_state {
67	UASP_SEND_DATA,
68	UASP_RECEIVE_DATA,
69	UASP_SEND_STATUS,
70	UASP_QUEUE_COMMAND,
71};
72
73#define USBG_MAX_CMD    64
74struct usbg_cmd {
75	/* common */
76	u8 cmd_buf[USBG_MAX_CMD];
77	u32 data_len;
78	struct work_struct work;
79	int unpacked_lun;
80	struct se_cmd se_cmd;
81	void *data_buf; /* used if no sg support available */
82	struct f_uas *fu;
83	struct completion write_complete;
84	struct kref ref;
85
86	/* UAS only */
87	u16 tag;
88	u16 prio_attr;
89	struct sense_iu sense_iu;
90	enum uas_state state;
91	struct uas_stream *stream;
92
93	/* BOT only */
94	__le32 bot_tag;
95	unsigned int csw_code;
96	unsigned is_read:1;
97
98};
99
100struct uas_stream {
101	struct usb_request	*req_in;
102	struct usb_request	*req_out;
103	struct usb_request	*req_status;
104};
105
106struct usbg_cdb {
107	struct usb_request	*req;
108	void			*buf;
109};
110
111struct bot_status {
112	struct usb_request	*req;
113	struct bulk_cs_wrap	csw;
114};
115
116struct f_uas {
117	struct usbg_tpg		*tpg;
118	struct usb_function	function;
119	u16			iface;
120
121	u32			flags;
122#define USBG_ENABLED		(1 << 0)
123#define USBG_IS_UAS		(1 << 1)
124#define USBG_USE_STREAMS	(1 << 2)
125#define USBG_IS_BOT		(1 << 3)
126#define USBG_BOT_CMD_PEND	(1 << 4)
127
128	struct usbg_cdb		cmd;
129	struct usb_ep		*ep_in;
130	struct usb_ep		*ep_out;
131
132	/* UAS */
133	struct usb_ep		*ep_status;
134	struct usb_ep		*ep_cmd;
135	struct uas_stream	stream[UASP_SS_EP_COMP_NUM_STREAMS];
136
137	/* BOT */
138	struct bot_status	bot_status;
139	struct usb_request	*bot_req_in;
140	struct usb_request	*bot_req_out;
141};
142
143extern struct usbg_tpg *the_only_tpg_I_currently_have;
144
145#endif
146