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