/* xen_dom0.h

 *

 * Copyright (C) 2015 David Anderson

 * Copyright (C) 2015 Red Hat, Inc. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * Author: David Anderson

 */

/*

 *  ELF note types for Xen dom0/hypervisor kdumps.

 *  The comments below are from xen/include/public/elfnote.h.

 */

/*

 * System information exported through crash notes.

 *

 * The kexec / kdump code will create one XEN_ELFNOTE_CRASH_INFO

 * note in case of a system crash. This note will contain various

 * information about the system, see xen/include/xen/elfcore.h.

 */

#define XEN_ELFNOTE_CRASH_INFO 0x1000001

/*

 * System registers exported through crash notes.

 *

 * The kexec / kdump code will create one XEN_ELFNOTE_CRASH_REGS

 * note per cpu in case of a system crash. This note is architecture

 * specific and will contain registers not saved in the "CORE" note.

 * See xen/include/xen/elfcore.h for more information.

 */

#define XEN_ELFNOTE_CRASH_REGS 0x1000002

/*

 * For (temporary) backwards compatibility.

 */

#define NT_XEN_KDUMP_CR3 0x10000001

struct xen_kdump_data {

	ulong flags;

	ulong cr3;

	ulong p2m_mfn;

	char *page;

	ulong last_mfn_read;

	ulong last_pmd_read;

	ulong cache_hits;

	ulong accesses;

	int p2m_frames;

        ulong *p2m_mfn_frame_list;

	ulong xen_phys_start;

	int xen_major_version;

	int xen_minor_version;

};

#define KDUMP_P2M_INIT  (0x1)

#define KDUMP_CR3       (0x2)

#define KDUMP_MFN_LIST  (0x4)

#define P2M_FAILURE ((physaddr_t)(0xffffffffffffffffLL))

extern struct xen_kdump_data *xkd;

void dump_xen_kdump_data(FILE *);

struct xen_kdump_data *get_xen_kdump_data(void);

void process_xen_note(ulong, void *, size_t);

physaddr_t xen_kdump_p2m(physaddr_t);