drivers/usb/gadget/legacy/tcm_usb_gadget.h

   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
  18 enum {
  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
  27 struct tcm_usbg_nexus {
  28         struct se_session *tvn_se_sess;
  29 };
  30
  31 struct 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
  45 struct 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
  54 enum 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
  62 struct 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
  88 struct uas_stream {
  89         struct usb_request      *req_in;
  90         struct usb_request      *req_out;
  91         struct usb_request      *req_status;
  92 };
  93
  94 struct usbg_cdb {
  95         struct usb_request      *req;
  96         void                    *buf;
  97 };
  98
  99 struct bot_status {
 100         struct usb_request      *req;
 101         struct bulk_cs_wrap     csw;
 102 };
 103
 104 struct 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
 131 extern struct usbg_tpg *the_only_tpg_I_currently_have;
 132
 133 #endif