OXIESEC PANEL

Name	Size	Modified	Perms
📁 ..	-	05/09/2024 07:14:16 AM	rwxr-xr-x
📄 9pfs.h	1.43 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 blkif.h	12.9 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 console.h	587 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 displif.h	39.03 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 fbif.h	4.48 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 kbdif.h	22.25 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 netif.h	34.08 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 pciif.h	3.52 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 protocols.h	697 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 pvcalls.h	3.04 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 ring.h	23.2 KB	06/16/2023 05:32:39 PM	rw-r--r--
📄 sndif.h	34.89 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 tpmif.h	1.67 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 vscsiif.h	8.7 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 xenbus.h	1.29 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 xs_wire.h	2.21 KB	01/28/2018 09:20:33 PM	rw-r--r--

Editing: tpmif.h

/******************************************************************************
 * tpmif.h
 *
 * TPM I/O interface for Xen guest OSes, v2
 *
 * This file is in the public domain.
 *
 */

#ifndef __XEN_PUBLIC_IO_TPMIF_H__
#define __XEN_PUBLIC_IO_TPMIF_H__

/*
 * Xenbus state machine
 *
 * Device open:
 *   1. Both ends start in XenbusStateInitialising
 *   2. Backend transitions to InitWait (frontend does not wait on this step)
 *   3. Frontend populates ring-ref, event-channel, feature-protocol-v2
 *   4. Frontend transitions to Initialised
 *   5. Backend maps grant and event channel, verifies feature-protocol-v2
 *   6. Backend transitions to Connected
 *   7. Frontend verifies feature-protocol-v2, transitions to Connected
 *
 * Device close:
 *   1. State is changed to XenbusStateClosing
 *   2. Frontend transitions to Closed
 *   3. Backend unmaps grant and event, changes state to InitWait
 */

enum vtpm_shared_page_state {
	VTPM_STATE_IDLE,         /* no contents / vTPM idle / cancel complete */
	VTPM_STATE_SUBMIT,       /* request ready / vTPM working */
	VTPM_STATE_FINISH,       /* response ready / vTPM idle */
	VTPM_STATE_CANCEL,       /* cancel requested / vTPM working */
};
/* The backend should only change state to IDLE or FINISH, while the
 * frontend should only change to SUBMIT or CANCEL. */

struct vtpm_shared_page {
	uint32_t length;         /* request/response length in bytes */

uint8_t state;           /* enum vtpm_shared_page_state */
	uint8_t locality;        /* for the current request */
	uint8_t pad;

uint8_t nr_extra_pages;  /* extra pages for long packets; may be zero */
	uint32_t extra_pages[0]; /* grant IDs; length in nr_extra_pages */
};

#endif