cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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tcm.h (2848B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef __TARGET_USB_GADGET_H__
      3#define __TARGET_USB_GADGET_H__
      4
      5#include <linux/kref.h>
      6/* #include <linux/usb/uas.h> */
      7#include <linux/usb/composite.h>
      8#include <linux/usb/uas.h>
      9#include <linux/usb/storage.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_INT_UAS = 0,
     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#define USB_G_DEFAULT_SESSION_TAGS	128
     28
     29struct tcm_usbg_nexus {
     30	struct se_session *tvn_se_sess;
     31};
     32
     33struct usbg_tpg {
     34	struct mutex tpg_mutex;
     35	/* SAS port target portal group tag for TCM */
     36	u16 tport_tpgt;
     37	/* Pointer back to usbg_tport */
     38	struct usbg_tport *tport;
     39	struct workqueue_struct *workqueue;
     40	/* Returned by usbg_make_tpg() */
     41	struct se_portal_group se_tpg;
     42	u32 gadget_connect;
     43	struct tcm_usbg_nexus *tpg_nexus;
     44	atomic_t tpg_port_count;
     45
     46	struct usb_function_instance *fi;
     47};
     48
     49struct usbg_tport {
     50	/* Binary World Wide unique Port Name for SAS Target port */
     51	u64 tport_wwpn;
     52	/* ASCII formatted WWPN for SAS Target port */
     53	char tport_name[USBG_NAMELEN];
     54	/* Returned by usbg_make_tport() */
     55	struct se_wwn tport_wwn;
     56};
     57
     58enum uas_state {
     59	UASP_SEND_DATA,
     60	UASP_RECEIVE_DATA,
     61	UASP_SEND_STATUS,
     62	UASP_QUEUE_COMMAND,
     63};
     64
     65#define USBG_MAX_CMD    64
     66struct usbg_cmd {
     67	/* common */
     68	u8 cmd_buf[USBG_MAX_CMD];
     69	u32 data_len;
     70	struct work_struct work;
     71	int unpacked_lun;
     72	struct se_cmd se_cmd;
     73	void *data_buf; /* used if no sg support available */
     74	struct f_uas *fu;
     75	struct completion write_complete;
     76	struct kref ref;
     77
     78	/* UAS only */
     79	u16 tag;
     80	u16 prio_attr;
     81	struct sense_iu sense_iu;
     82	enum uas_state state;
     83	struct uas_stream *stream;
     84
     85	/* BOT only */
     86	__le32 bot_tag;
     87	unsigned int csw_code;
     88	unsigned is_read:1;
     89
     90};
     91
     92struct uas_stream {
     93	struct usb_request	*req_in;
     94	struct usb_request	*req_out;
     95	struct usb_request	*req_status;
     96};
     97
     98struct usbg_cdb {
     99	struct usb_request	*req;
    100	void			*buf;
    101};
    102
    103struct bot_status {
    104	struct usb_request	*req;
    105	struct bulk_cs_wrap	csw;
    106};
    107
    108struct f_uas {
    109	struct usbg_tpg		*tpg;
    110	struct usb_function	function;
    111	u16			iface;
    112
    113	u32			flags;
    114#define USBG_ENABLED		(1 << 0)
    115#define USBG_IS_UAS		(1 << 1)
    116#define USBG_USE_STREAMS	(1 << 2)
    117#define USBG_IS_BOT		(1 << 3)
    118#define USBG_BOT_CMD_PEND	(1 << 4)
    119
    120	struct usbg_cdb		cmd;
    121	struct usb_ep		*ep_in;
    122	struct usb_ep		*ep_out;
    123
    124	/* UAS */
    125	struct usb_ep		*ep_status;
    126	struct usb_ep		*ep_cmd;
    127	struct uas_stream	stream[UASP_SS_EP_COMP_NUM_STREAMS];
    128
    129	/* BOT */
    130	struct bot_status	bot_status;
    131	struct usb_request	*bot_req_in;
    132	struct usb_request	*bot_req_out;
    133};
    134
    135#endif /* __TARGET_USB_GADGET_H__ */