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/*

 * 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>

#define GDA_MAGIC       0x58464552

/*

 * 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 __ASSEMBLY__

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_COMPACT_NODES]; /* NASID of each node,

                                                  * indexed by cnodeid.

                                                  */

} gda_t;

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

#endif /* !__ASSEMBLY__ */

/*

 * 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 */