include/asm-mips/sn/kldir.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Derived from IRIX <sys/SN/kldir.h>, revision 1.21.
   7  *
   8  * Copyright (C) 1992 - 1997, 1999, 2000 Silicon Graphics, Inc.
   9  * Copyright (C) 1999, 2000 by Ralf Baechle
  10  */
  11 #ifndef _ASM_SN_KLDIR_H
  12 #define _ASM_SN_KLDIR_H
  13
  14 #include <linux/config.h>
  15
  16 #if defined(CONFIG_SGI_IO)
  17 #include <asm/hack.h>
  18 #endif
  19
  20 /*
  21  * The kldir memory area resides at a fixed place in each node's memory and
  22  * provides pointers to most other IP27 memory areas.  This allows us to
  23  * resize and/or relocate memory areas at a later time without breaking all
  24  * firmware and kernels that use them.  Indices in the array are
  25  * permanently dedicated to areas listed below.  Some memory areas (marked
  26  * below) reside at a permanently fixed location, but are included in the
  27  * directory for completeness.
  28  */
  29
  30 #define KLDIR_MAGIC             0x434d5f53505f5357
  31
  32 /*
  33  * The upper portion of the memory map applies during boot
  34  * only and is overwritten by IRIX/SYMMON.
  35  *
  36  *                                    MEMORY MAP PER NODE
  37  *
  38  * 0x2000000 (32M)         +-----------------------------------------+
  39  *                         |      IO6 BUFFERS FOR FLASH ENET IOC3    |
  40  * 0x1F80000 (31.5M)       +-----------------------------------------+
  41  *                         |      IO6 TEXT/DATA/BSS/stack            |
  42  * 0x1C00000 (30M)         +-----------------------------------------+
  43  *                         |      IO6 PROM DEBUG TEXT/DATA/BSS/stack |
  44  * 0x0800000 (28M)         +-----------------------------------------+
  45  *                         |      IP27 PROM TEXT/DATA/BSS/stack      |
  46  * 0x1B00000 (27M)         +-----------------------------------------+
  47  *                         |      IP27 CFG                           |
  48  * 0x1A00000 (26M)         +-----------------------------------------+
  49  *                         |      Graphics PROM                      |
  50  * 0x1800000 (24M)         +-----------------------------------------+
  51  *                         |      3rd Party PROM drivers             |
  52  * 0x1600000 (22M)         +-----------------------------------------+
  53  *                         |                                         |
  54  *                         |      Free                               |
  55  *                         |                                         |
  56  *                         +-----------------------------------------+
  57  *                         |      UNIX DEBUG Version                 |
  58  * 0x190000 (2M--)         +-----------------------------------------+
  59  *                         |      SYMMON                             |
  60  *                         |      (For UNIX Debug only)              |
  61  * 0x34000 (208K)          +-----------------------------------------+
  62  *                         |      SYMMON STACK [NUM_CPU_PER_NODE]    |
  63  *                         |      (For UNIX Debug only)              |
  64  * 0x25000 (148K)          +-----------------------------------------+
  65  *                         |      KLCONFIG - II (temp)               |
  66  *                         |                                         |
  67  *                         |    ----------------------------         |
  68  *                         |                                         |
  69  *                         |      UNIX NON-DEBUG Version             |
  70  * 0x19000 (100K)          +-----------------------------------------+
  71  *
  72  *
  73  * The lower portion of the memory map contains information that is
  74  * permanent and is used by the IP27PROM, IO6PROM and IRIX.
  75  *
  76  * 0x19000 (100K)          +-----------------------------------------+
  77  *                         |                                         |
  78  *                         |      PI Error Spools (32K)              |
  79  *                         |                                         |
  80  * 0x12000 (72K)           +-----------------------------------------+
  81  *                         |      Unused                             |
  82  * 0x11c00 (71K)           +-----------------------------------------+
  83  *                         |      CPU 1 NMI Eframe area              |
  84  * 0x11a00 (70.5K)         +-----------------------------------------+
  85  *                         |      CPU 0 NMI Eframe area              |
  86  * 0x11800 (70K)           +-----------------------------------------+
  87  *                         |      CPU 1 NMI Register save area       |
  88  * 0x11600 (69.5K)         +-----------------------------------------+
  89  *                         |      CPU 0 NMI Register save area       |
  90  * 0x11400 (69K)           +-----------------------------------------+
  91  *                         |      GDA (1k)                           |
  92  * 0x11000 (68K)           +-----------------------------------------+
  93  *                         |      Early cache Exception stack        |
  94  *                         |             and/or                      |
  95  *                         |      kernel/io6prom nmi registers       |
  96  * 0x10800  (66k)          +-----------------------------------------+
  97  *                         |      cache error eframe                 |
  98  * 0x10400 (65K)           +-----------------------------------------+
  99  *                         |      Exception Handlers (UALIAS copy)   |
 100  * 0x10000 (64K)           +-----------------------------------------+
 101  *                         |                                         |
 102  *                         |                                         |
 103  *                         |      KLCONFIG - I (permanent) (48K)     |
 104  *                         |                                         |
 105  *                         |                                         |
 106  *                         |                                         |
 107  * 0x4000 (16K)            +-----------------------------------------+
 108  *                         |      NMI Handler (Protected Page)       |
 109  * 0x3000 (12K)            +-----------------------------------------+
 110  *                         |      ARCS PVECTORS (master node only)   |
 111  * 0x2c00 (11K)            +-----------------------------------------+
 112  *                         |      ARCS TVECTORS (master node only)   |
 113  * 0x2800 (10K)            +-----------------------------------------+
 114  *                         |      LAUNCH [NUM_CPU]                   |
 115  * 0x2400 (9K)             +-----------------------------------------+
 116  *                         |      Low memory directory (KLDIR)       |
 117  * 0x2000 (8K)             +-----------------------------------------+
 118  *                         |      ARCS SPB (1K)                      |
 119  * 0x1000 (4K)             +-----------------------------------------+
 120  *                         |      Early cache Exception stack        |
 121  *                         |             and/or                      |
 122  *                         |      kernel/io6prom nmi registers       |
 123  * 0x800  (2k)             +-----------------------------------------+
 124  *                         |      cache error eframe                 |
 125  * 0x400 (1K)              +-----------------------------------------+
 126  *                         |      Exception Handlers                 |
 127  * 0x0   (0K)              +-----------------------------------------+
 128  */
 129
 130 #ifdef __ASSEMBLY__
 131 #define KLDIR_OFF_MAGIC                 0x00
 132 #define KLDIR_OFF_OFFSET                0x08
 133 #define KLDIR_OFF_POINTER               0x10
 134 #define KLDIR_OFF_SIZE                  0x18
 135 #define KLDIR_OFF_COUNT                 0x20
 136 #define KLDIR_OFF_STRIDE                0x28
 137 #endif /* __ASSEMBLY__ */
 138
 139 #if !defined(CONFIG_SGI_IO)
 140
 141 /*
 142  * This is defined here because IP27_SYMMON_STK_SIZE must be at least what
 143  * we define here.  Since it's set up in the prom.  We can't redefine it later
 144  * and expect more space to be allocated.  The way to find out the true size
 145  * of the symmon stacks is to divide SYMMON_STK_SIZE by SYMMON_STK_STRIDE
 146  * for a particular node.
 147  */
 148 #define SYMMON_STACK_SIZE               0x8000
 149
 150 #if defined (PROM) || defined (SABLE)
 151
 152 /*
 153  * These defines are prom version dependent.  No code other than the IP27
 154  * prom should attempt to use these values.
 155  */
 156 #define IP27_LAUNCH_OFFSET              0x2400
 157 #define IP27_LAUNCH_SIZE                0x400
 158 #define IP27_LAUNCH_COUNT               2
 159 #define IP27_LAUNCH_STRIDE              0x200
 160
 161 #define IP27_KLCONFIG_OFFSET            0x4000
 162 #define IP27_KLCONFIG_SIZE              0xc000
 163 #define IP27_KLCONFIG_COUNT             1
 164 #define IP27_KLCONFIG_STRIDE            0
 165
 166 #define IP27_NMI_OFFSET                 0x3000
 167 #define IP27_NMI_SIZE                   0x40
 168 #define IP27_NMI_COUNT                  2
 169 #define IP27_NMI_STRIDE                 0x40
 170
 171 #define IP27_PI_ERROR_OFFSET            0x12000
 172 #define IP27_PI_ERROR_SIZE              0x4000
 173 #define IP27_PI_ERROR_COUNT             1
 174 #define IP27_PI_ERROR_STRIDE            0
 175
 176 #define IP27_SYMMON_STK_OFFSET          0x25000
 177 #define IP27_SYMMON_STK_SIZE            0xe000
 178 #define IP27_SYMMON_STK_COUNT           2
 179 /* IP27_SYMMON_STK_STRIDE must be >= SYMMON_STACK_SIZE */
 180 #define IP27_SYMMON_STK_STRIDE          0x7000
 181
 182 #define IP27_FREEMEM_OFFSET             0x19000
 183 #define IP27_FREEMEM_SIZE               -1
 184 #define IP27_FREEMEM_COUNT              1
 185 #define IP27_FREEMEM_STRIDE             0
 186
 187 #endif /* PROM || SABLE*/
 188 /*
 189  * There will be only one of these in a partition so the IO6 must set it up.
 190  */
 191 #define IO6_GDA_OFFSET                  0x11000
 192 #define IO6_GDA_SIZE                    0x400
 193 #define IO6_GDA_COUNT                   1
 194 #define IO6_GDA_STRIDE                  0
 195
 196 /*
 197  * save area of kernel nmi regs in the prom format
 198  */
 199 #define IP27_NMI_KREGS_OFFSET           0x11400
 200 #define IP27_NMI_KREGS_CPU_SIZE         0x200
 201 /*
 202  * save area of kernel nmi regs in eframe format
 203  */
 204 #define IP27_NMI_EFRAME_OFFSET          0x11800
 205 #define IP27_NMI_EFRAME_SIZE            0x200
 206
 207 #define KLDIR_ENT_SIZE                  0x40
 208 #define KLDIR_MAX_ENTRIES               (0x400 / 0x40)
 209
 210 #endif  /* !CONFIG_SGI_IO */
 211
 212 #ifndef __ASSEMBLY__
 213 typedef struct kldir_ent_s {
 214         u64             magic;          /* Indicates validity of entry      */
 215         off_t           offset;         /* Offset from start of node space  */
 216 #if defined(CONFIG_SGI_IO)      /* FIXME */
 217         __psunsigned_t  pointer;        /* Pointer to area in some cases    */
 218 #else
 219         unsigned long   pointer;        /* Pointer to area in some cases    */
 220 #endif
 221         size_t          size;           /* Size in bytes                    */
 222         u64             count;          /* Repeat count if array, 1 if not  */
 223         size_t          stride;         /* Stride if array, 0 if not        */
 224         char            rsvd[16];       /* Pad entry to 0x40 bytes          */
 225         /* NOTE: These 16 bytes are used in the Partition KLDIR
 226            entry to store partition info. Refer to klpart.h for this. */
 227 } kldir_ent_t;
 228 #endif /* !__ASSEMBLY__ */
 229
 230 #if defined(CONFIG_SGI_IO)
 231
 232 #define KLDIR_ENT_SIZE                  0x40
 233 #define KLDIR_MAX_ENTRIES               (0x400 / 0x40)
 234
 235 /*
 236  * The actual offsets of each memory area are machine-dependent
 237  */
 238 #ifdef CONFIG_SGI_IP27
 239 // Not yet #include <asm/sn/sn0/kldir.h>
 240 #elif defined(CONFIG_SGI_IP35)
 241 #include <asm/sn/sn1/kldir.h>
 242 #else
 243 #error "kldir.h is currently defined for IP27 and IP35 platforms only"
 244 #endif
 245
 246 #endif  /* CONFIG_SGI_IO */
 247
 248 #endif /* _ASM_SN_KLDIR_H */