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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __TARGET_USB_GADGET_H__
#define __TARGET_USB_GADGET_H__
#include <linux/kref.h>
/* #include <linux/usb/uas.h> */
#include <linux/usb/composite.h>
#include <linux/usb/uas.h>
#include <linux/usb/storage.h>
#include <target/target_core_base.h>
#include <target/target_core_fabric.h>
#define USBG_NAMELEN 32
#define fuas_to_gadget(f) (f->function.config->cdev->gadget)
#define UASP_SS_EP_COMP_LOG_STREAMS 4
#define UASP_SS_EP_COMP_NUM_STREAMS (1 << UASP_SS_EP_COMP_LOG_STREAMS)
enum {
USB_G_STR_INT_UAS = 0,
USB_G_STR_INT_BBB,
};
#define USB_G_ALT_INT_BBB 0
#define USB_G_ALT_INT_UAS 1
#define USB_G_DEFAULT_SESSION_TAGS 128
struct tcm_usbg_nexus {
struct se_session *tvn_se_sess;
};
struct usbg_tpg {
struct mutex tpg_mutex;
/* SAS port target portal group tag for TCM */
u16 tport_tpgt;
/* Pointer back to usbg_tport */
struct usbg_tport *tport;
struct workqueue_struct *workqueue;
/* Returned by usbg_make_tpg() */
struct se_portal_group se_tpg;
u32 gadget_connect;
struct tcm_usbg_nexus *tpg_nexus;
atomic_t tpg_port_count;
struct usb_function_instance *fi;
};
struct usbg_tport {
/* Binary World Wide unique Port Name for SAS Target port */
u64 tport_wwpn;
/* ASCII formatted WWPN for SAS Target port */
char tport_name[USBG_NAMELEN];
/* Returned by usbg_make_tport() */
struct se_wwn tport_wwn;
};
enum uas_state {
UASP_SEND_DATA,
UASP_RECEIVE_DATA,
UASP_SEND_STATUS,
UASP_QUEUE_COMMAND,
};
#define USBG_MAX_CMD 64
struct usbg_cmd {
/* common */
u8 cmd_buf[USBG_MAX_CMD];
u32 data_len;
struct work_struct work;
int unpacked_lun;
struct se_cmd se_cmd;
void *data_buf; /* used if no sg support available */
struct f_uas *fu;
struct completion write_complete;
struct kref ref;
/* UAS only */
u16 tag;
u16 prio_attr;
struct sense_iu sense_iu;
enum uas_state state;
struct uas_stream *stream;
/* BOT only */
__le32 bot_tag;
unsigned int csw_code;
unsigned is_read:1;
};
struct uas_stream {
struct usb_request *req_in;
struct usb_request *req_out;
struct usb_request *req_status;
};
struct usbg_cdb {
struct usb_request *req;
void *buf;
};
struct bot_status {
struct usb_request *req;
struct bulk_cs_wrap csw;
};
struct f_uas {
struct usbg_tpg *tpg;
struct usb_function function;
u16 iface;
u32 flags;
#define USBG_ENABLED (1 << 0)
#define USBG_IS_UAS (1 << 1)
#define USBG_USE_STREAMS (1 << 2)
#define USBG_IS_BOT (1 << 3)
#define USBG_BOT_CMD_PEND (1 << 4)
struct usbg_cdb cmd;
struct usb_ep *ep_in;
struct usb_ep *ep_out;
/* UAS */
struct usb_ep *ep_status;
struct usb_ep *ep_cmd;
struct uas_stream stream[UASP_SS_EP_COMP_NUM_STREAMS];
/* BOT */
struct bot_status bot_status;
struct usb_request *bot_req_in;
struct usb_request *bot_req_out;
};
#endif /* __TARGET_USB_GADGET_H__ */
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