sun4v/sys/lpad.h

	lpad.h revision 1ae0874509b6811fdde1dfd46f0d93fd09867a3f
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _LPAD_H
#define _LPAD_H

#pragma ident   "%Z%%M% %I% %E% SMI"

/*
 * sun4v Landing Pad
 */

#ifdef __cplusplus
extern "C" {
#endif

#ifndef _ASM

#include <sys/pte.h>

typedef union {
    struct {
        unsigned int    rsvd0:32;
        unsigned int    rsvd1:29;
        unsigned int    perm:1;
        unsigned int    mmuflags:2;
    } flag_bits;
    uint64_t    ll;
} lpad_map_flag_t;

typedef struct lpad_map {
    lpad_map_flag_t flags;
    uint64_t    va;
    tte_t       tte;
} lpad_map_t;

#define flag_mmuflags   flags.flag_bits.mmuflags
#define flag_perm   flags.flag_bits.perm

typedef struct lpad_data {
    uint64_t    magic;      /* magic value for sanity checking */
    uint64_t    *inuse;     /* clear flag when done with lpad */
    uint64_t    mmfsa_ra;   /* RA of MMU fault status area */
    uint64_t    pc;     /* VA of CPU startup function */
    uint64_t    arg;        /* argument to startup function */
    uint64_t    nmap;       /* number of mappings */
    lpad_map_t  map[1];     /* array of mappings */
} lpad_data_t;

extern uint64_t *lpad_setup(int cpuid, uint64_t pc, uint64_t arg);

#endif /* ! _ASM */

/*
 * General landing pad constants
 */
#define LPAD_TEXT_SIZE      1024
#define LPAD_DATA_SIZE      1024
#define LPAD_SIZE       (LPAD_TEXT_SIZE + LPAD_DATA_SIZE)
#define LPAD_MAGIC_VAL      0x4C502D4D41474943  /* "LP-MAGIC" */

/*
 * Masks for the lpad_map_t flag bitfield
 */
#define FLAG_MMUFLAGS_MASK  0x3
#define FLAG_LOCK_MASK      0x4

#ifdef __cplusplus
}
#endif

#endif /* _LPAD_H */