/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Derived from IRIX <sys/SN/gda.h>.
 *
 * Copyright (C) 1992 - 1997, 2000 Silicon Graphics, Inc.
 *
 * gda.h -- Contains the data structure for the global data area,
 *      The GDA contains information communicated between the
 *      PROM, SYMMON, and the kernel.
 */
#ifndef _ASM_SN_GDA_H
#define _ASM_SN_GDA_H

#include <asm/sn/addrs.h>

/*
 * GDA Version History
 *
 * Version #    | Change
 * -------------+-------------------------------------------------------
 *      1       | Initial SN0 version
 *      2       | Prom sets g_partid field to the partition number. 0 IS
 *              | a valid partition #.
 */

#define GDA_VERSION     2       /* Current GDA version # */

#define G_MAGICOFF      0
#define G_VERSIONOFF    4
#define G_PROMOPOFF     6
#define G_MASTEROFF     8
#define G_VDSOFF        12
#define G_HKDNORMOFF    16
#define G_HKDUTLBOFF    24
#define G_HKDXUTLBOFF   32
#define G_PARTIDOFF     40
#define G_TABLEOFF      128

#ifndef __ASSEMBLER__

typedef struct gda {
        u32     g_magic;        /* GDA magic number */
        u16     g_version;      /* Version of this structure */
        u16     g_masterid;     /* The NASID:CPUNUM of the master cpu */
        u32     g_promop;       /* Passes requests from the kernel to prom */
        u32     g_vds;          /* Store the virtual dipswitches here */
        void    **g_hooked_norm;/* ptr to pda loc for norm hndlr */
        void    **g_hooked_utlb;/* ptr to pda loc for utlb hndlr */
        void    **g_hooked_xtlb;/* ptr to pda loc for xtlb hndlr */
        int     g_partid;       /* partition id */
        int     g_symmax;       /* Max symbols in name table. */
        void    *g_dbstab;      /* Address of idbg symbol table */
        char    *g_nametab;     /* Address of idbg name table */
        void    *g_ktext_repmask;
                                /* Pointer to a mask of nodes with copies
                                 * of the kernel. */
        char    g_padding[56];  /* pad out to 128 bytes */
        nasid_t g_nasidtable[MAX_NUMNODES]; /* NASID of each node */
} gda_t;

#define GDA ((gda_t*) GDA_ADDR(get_nasid()))

#endif /* !__ASSEMBLER__ */
/*
 * Define:      PART_GDA_VERSION
 * Purpose:     Define the minimum version of the GDA required, lower
 *              revisions assume GDA is NOT set up, and read partition
 *              information from the board info.
 */
#define PART_GDA_VERSION        2

/*
 * The following requests can be sent to the PROM during startup.
 */

#define PROMOP_MAGIC            0x0ead0000
#define PROMOP_MAGIC_MASK       0x0fff0000

#define PROMOP_BIST_SHIFT       11
#define PROMOP_BIST_MASK        (0x3 << 11)

#define PROMOP_REG              PI_ERR_STACK_ADDR_A

#define PROMOP_INVALID          (PROMOP_MAGIC | 0x00)
#define PROMOP_HALT             (PROMOP_MAGIC | 0x10)
#define PROMOP_POWERDOWN        (PROMOP_MAGIC | 0x20)
#define PROMOP_RESTART          (PROMOP_MAGIC | 0x30)
#define PROMOP_REBOOT           (PROMOP_MAGIC | 0x40)
#define PROMOP_IMODE            (PROMOP_MAGIC | 0x50)

#define PROMOP_CMD_MASK         0x00f0
#define PROMOP_OPTIONS_MASK     0xfff0

#define PROMOP_SKIP_DIAGS       0x0100          /* don't bother running diags */
#define PROMOP_SKIP_MEMINIT     0x0200          /* don't bother initing memory */
#define PROMOP_SKIP_DEVINIT     0x0400          /* don't bother initing devices */
#define PROMOP_BIST1            0x0800          /* keep track of which BIST ran */
#define PROMOP_BIST2            0x1000          /* keep track of which BIST ran */

#endif /* _ASM_SN_GDA_H */