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gerrit-public.fairphone.software / kernel / msm-4.19 / f9ded3b2e761256301ebb8d90e87eb1b5443e3ea / . / drivers / usb / gadget / tcm_usb_gadget.h
blob: 8289219925b87dd7b99bedd3f5c2b4205f401862 [file] [log] [blame]
Sebastian Andrzej Siewiorc52661d2012-05-03 19:51:36 -0700[diff] [blame]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
Sebastian Andrzej Siewior18786da2012-09-06 20:11:18 +0200[diff] [blame]19enum {
Sebastian Andrzej Siewior276e2e42012-09-06 20:11:21 +0200[diff] [blame]20 USB_G_STR_CONFIG = USB_GADGET_FIRST_AVAIL_IDX,
Sebastian Andrzej Siewior18786da2012-09-06 20:11:18 +0200[diff] [blame]21 USB_G_STR_INT_UAS,
22 USB_G_STR_INT_BBB,
23};
Sebastian Andrzej Siewiorc52661d2012-05-03 19:51:36 -0700[diff] [blame]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