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kldir.h

/*
 * 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/kldir.h>, revision 1.21.
 *
 * Copyright (C) 1992 - 1997, 1999, 2000 Silicon Graphics, Inc.
 * Copyright (C) 1999, 2000 by Ralf Baechle
 */
#ifndef _ASM_SN_KLDIR_H
#define _ASM_SN_KLDIR_H


/*
 * The kldir memory area resides at a fixed place in each node's memory and
 * provides pointers to most other IP27 memory areas.  This allows us to
 * resize and/or relocate memory areas at a later time without breaking all
 * firmware and kernels that use them.  Indices in the array are
 * permanently dedicated to areas listed below.  Some memory areas (marked
 * below) reside at a permanently fixed location, but are included in the
 * directory for completeness.
 */

#define KLDIR_MAGIC           0x434d5f53505f5357

/*
 * The upper portion of the memory map applies during boot
 * only and is overwritten by IRIX/SYMMON.
 *
 *                                    MEMORY MAP PER NODE
 *
 * 0x2000000 (32M)         +-----------------------------------------+
 *                         |      IO6 BUFFERS FOR FLASH ENET IOC3    |
 * 0x1F80000 (31.5M)       +-----------------------------------------+
 *                         |      IO6 TEXT/DATA/BSS/stack            |
 * 0x1C00000 (30M)         +-----------------------------------------+
 *                         |      IO6 PROM DEBUG TEXT/DATA/BSS/stack |
 * 0x0800000 (28M)         +-----------------------------------------+
 *                         |      IP27 PROM TEXT/DATA/BSS/stack      |
 * 0x1B00000 (27M)         +-----------------------------------------+
 *                         |      IP27 CFG                           |
 * 0x1A00000 (26M)         +-----------------------------------------+
 *                         |      Graphics PROM                      |
 * 0x1800000 (24M)         +-----------------------------------------+
 *                         |      3rd Party PROM drivers             |
 * 0x1600000 (22M)         +-----------------------------------------+
 *                         |                                         |
 *                         |      Free                               |
 *                         |                                         |
 *                         +-----------------------------------------+
 *                         |      UNIX DEBUG Version                 |
 * 0x190000 (2M--)         +-----------------------------------------+
 *                         |      SYMMON                             |
 *                         |      (For UNIX Debug only)              |
 * 0x34000 (208K)          +-----------------------------------------+
 *                         |      SYMMON STACK [NUM_CPU_PER_NODE]    |
 *                         |      (For UNIX Debug only)              |
 * 0x25000 (148K)          +-----------------------------------------+
 *                         |      KLCONFIG - II (temp)               |
 *                         |                                         |
 *                         |    ----------------------------         |
 *                         |                                         |
 *                         |      UNIX NON-DEBUG Version             |
 * 0x19000 (100K)          +-----------------------------------------+
 *
 *
 * The lower portion of the memory map contains information that is
 * permanent and is used by the IP27PROM, IO6PROM and IRIX.
 *
 * 0x19000 (100K)          +-----------------------------------------+
 *                         |                                         |
 *                         |      PI Error Spools (32K)              |
 *                         |                                         |
 * 0x12000 (72K)           +-----------------------------------------+
 *                         |      Unused                             |
 * 0x11c00 (71K)           +-----------------------------------------+
 *                         |      CPU 1 NMI Eframe area                |
 * 0x11a00 (70.5K)         +-----------------------------------------+
 *                         |      CPU 0 NMI Eframe area                |
 * 0x11800 (70K)           +-----------------------------------------+
 *                         |      CPU 1 NMI Register save area       |
 * 0x11600 (69.5K)         +-----------------------------------------+
 *                         |      CPU 0 NMI Register save area       |
 * 0x11400 (69K)           +-----------------------------------------+
 *                         |      GDA (1k)                           |
 * 0x11000 (68K)           +-----------------------------------------+
 *                         |      Early cache Exception stack        |
 *                         |             and/or                      |
 *                   |      kernel/io6prom nmi registers         |
 * 0x10800  (66k)    +-----------------------------------------+
 *                   |      cache error eframe                   |
 * 0x10400 (65K)           +-----------------------------------------+
 *                         |      Exception Handlers (UALIAS copy)   |
 * 0x10000 (64K)           +-----------------------------------------+
 *                         |                                         |
 *                         |                                         |
 *                         |      KLCONFIG - I (permanent) (48K)     |
 *                         |                                         |
 *                         |                                         |
 *                         |                                         |
 * 0x4000 (16K)            +-----------------------------------------+
 *                         |      NMI Handler (Protected Page)       |
 * 0x3000 (12K)            +-----------------------------------------+
 *                         |      ARCS PVECTORS (master node only)   |
 * 0x2c00 (11K)            +-----------------------------------------+
 *                         |      ARCS TVECTORS (master node only)   |
 * 0x2800 (10K)            +-----------------------------------------+
 *                         |      LAUNCH [NUM_CPU]                   |
 * 0x2400 (9K)             +-----------------------------------------+
 *                         |      Low memory directory (KLDIR)       |
 * 0x2000 (8K)             +-----------------------------------------+
 *                         |      ARCS SPB (1K)                      |
 * 0x1000 (4K)             +-----------------------------------------+
 *                         |      Early cache Exception stack        |
 *                         |             and/or                      |
 *                   |      kernel/io6prom nmi registers         |
 * 0x800  (2k)               +-----------------------------------------+
 *                   |      cache error eframe                   |
 * 0x400 (1K)              +-----------------------------------------+
 *                         |      Exception Handlers                 |
 * 0x0   (0K)              +-----------------------------------------+
 */

#ifdef __ASSEMBLY__
#define KLDIR_OFF_MAGIC             0x00
#define KLDIR_OFF_OFFSET            0x08
#define KLDIR_OFF_POINTER           0x10
#define KLDIR_OFF_SIZE              0x18
#define KLDIR_OFF_COUNT             0x20
#define KLDIR_OFF_STRIDE            0x28
#endif /* __ASSEMBLY__ */

/*
 * This is defined here because IP27_SYMMON_STK_SIZE must be at least what
 * we define here.  Since it's set up in the prom.  We can't redefine it later
 * and expect more space to be allocated.  The way to find out the true size
 * of the symmon stacks is to divide SYMMON_STK_SIZE by SYMMON_STK_STRIDE
 * for a particular node.
 */
#define SYMMON_STACK_SIZE           0x8000

#if defined(PROM)

/*
 * These defines are prom version dependent.  No code other than the IP27
 * prom should attempt to use these values.
 */
#define IP27_LAUNCH_OFFSET          0x2400
#define IP27_LAUNCH_SIZE            0x400
#define IP27_LAUNCH_COUNT           2
#define IP27_LAUNCH_STRIDE          0x200

#define IP27_KLCONFIG_OFFSET        0x4000
#define IP27_KLCONFIG_SIZE          0xc000
#define IP27_KLCONFIG_COUNT         1
#define IP27_KLCONFIG_STRIDE        0

#define IP27_NMI_OFFSET             0x3000
#define IP27_NMI_SIZE               0x40
#define IP27_NMI_COUNT              2
#define IP27_NMI_STRIDE             0x40

#define IP27_PI_ERROR_OFFSET        0x12000
#define IP27_PI_ERROR_SIZE          0x4000
#define IP27_PI_ERROR_COUNT         1
#define IP27_PI_ERROR_STRIDE        0

#define IP27_SYMMON_STK_OFFSET            0x25000
#define IP27_SYMMON_STK_SIZE        0xe000
#define IP27_SYMMON_STK_COUNT       2
/* IP27_SYMMON_STK_STRIDE must be >= SYMMON_STACK_SIZE */
#define IP27_SYMMON_STK_STRIDE            0x7000

#define IP27_FREEMEM_OFFSET         0x19000
#define IP27_FREEMEM_SIZE           -1
#define IP27_FREEMEM_COUNT          1
#define IP27_FREEMEM_STRIDE         0

#endif /* PROM */
/*
 * There will be only one of these in a partition so the IO6 must set it up.
 */
#define IO6_GDA_OFFSET              0x11000
#define IO6_GDA_SIZE                0x400
#define IO6_GDA_COUNT               1
#define IO6_GDA_STRIDE              0

/*
 * save area of kernel nmi regs in the prom format
 */
#define IP27_NMI_KREGS_OFFSET       0x11400
#define IP27_NMI_KREGS_CPU_SIZE           0x200
/*
 * save area of kernel nmi regs in eframe format
 */
#define IP27_NMI_EFRAME_OFFSET            0x11800
#define IP27_NMI_EFRAME_SIZE        0x200

#define KLDIR_ENT_SIZE              0x40
#define KLDIR_MAX_ENTRIES           (0x400 / 0x40)

#ifndef __ASSEMBLY__
00204 typedef struct kldir_ent_s {
      u64         magic;            /* Indicates validity of entry      */
      off_t       offset;           /* Offset from start of node space  */
      unsigned long     pointer;    /* Pointer to area in some cases    */
      size_t            size;       /* Size in bytes            */
      u64         count;            /* Repeat count if array, 1 if not  */
      size_t            stride;           /* Stride if array, 0 if not        */
      char        rsvd[16];   /* Pad entry to 0x40 bytes          */
      /* NOTE: These 16 bytes are used in the Partition KLDIR
         entry to store partition info. Refer to klpart.h for this. */
} kldir_ent_t;
#endif /* !__ASSEMBLY__ */

#endif /* _ASM_SN_KLDIR_H */

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