root/arch/mips/include/asm/sn/addrs.h

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INCLUDED FROM

   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  * Copyright (C) 1992 - 1997, 1999, 2000 Silicon Graphics, Inc.
   7  * Copyright (C) 1999, 2000 by Ralf Baechle
   8  */
   9 #ifndef _ASM_SN_ADDRS_H
  10 #define _ASM_SN_ADDRS_H
  11 
  12 
  13 #ifndef __ASSEMBLY__
  14 #include <linux/smp.h>
  15 #include <linux/types.h>
  16 #endif /* !__ASSEMBLY__ */
  17 
  18 #include <asm/addrspace.h>
  19 #include <asm/sn/kldir.h>
  20 
  21 #if defined(CONFIG_SGI_IP27)
  22 #include <asm/sn/sn0/addrs.h>
  23 #elif defined(CONFIG_SGI_IP35)
  24 #include <asm/sn/sn1/addrs.h>
  25 #endif
  26 
  27 
  28 #ifndef __ASSEMBLY__
  29 
  30 #define UINT64_CAST             (unsigned long)
  31 
  32 #else /* __ASSEMBLY__ */
  33 
  34 #define UINT64_CAST
  35 
  36 #endif /* __ASSEMBLY__ */
  37 
  38 
  39 #define NASID_GET_META(_n)      ((_n) >> NASID_LOCAL_BITS)
  40 #ifdef CONFIG_SGI_IP27
  41 #define NASID_GET_LOCAL(_n)     ((_n) & 0xf)
  42 #endif
  43 #define NASID_MAKE(_m, _l)      (((_m) << NASID_LOCAL_BITS) | (_l))
  44 
  45 #define NODE_ADDRSPACE_MASK     (NODE_ADDRSPACE_SIZE - 1)
  46 #define TO_NODE_ADDRSPACE(_pa)  (UINT64_CAST (_pa) & NODE_ADDRSPACE_MASK)
  47 
  48 #define CHANGE_ADDR_NASID(_pa, _nasid)  \
  49                 ((UINT64_CAST(_pa) & ~NASID_MASK) | \
  50                  (UINT64_CAST(_nasid) <<  NASID_SHFT))
  51 
  52 
  53 /*
  54  * The following macros are used to index to the beginning of a specific
  55  * node's address space.
  56  */
  57 
  58 #define NODE_OFFSET(_n)         (UINT64_CAST (_n) << NODE_SIZE_BITS)
  59 
  60 #define NODE_CAC_BASE(_n)       (CAC_BASE   + NODE_OFFSET(_n))
  61 #define NODE_HSPEC_BASE(_n)     (HSPEC_BASE + NODE_OFFSET(_n))
  62 #define NODE_IO_BASE(_n)        (IO_BASE    + NODE_OFFSET(_n))
  63 #define NODE_MSPEC_BASE(_n)     (MSPEC_BASE + NODE_OFFSET(_n))
  64 #define NODE_UNCAC_BASE(_n)     (UNCAC_BASE + NODE_OFFSET(_n))
  65 
  66 #define TO_NODE(_n, _x)         (NODE_OFFSET(_n)     | ((_x)               ))
  67 #define TO_NODE_CAC(_n, _x)     (NODE_CAC_BASE(_n)   | ((_x) & TO_PHYS_MASK))
  68 #define TO_NODE_UNCAC(_n, _x)   (NODE_UNCAC_BASE(_n) | ((_x) & TO_PHYS_MASK))
  69 #define TO_NODE_MSPEC(_n, _x)   (NODE_MSPEC_BASE(_n) | ((_x) & TO_PHYS_MASK))
  70 #define TO_NODE_HSPEC(_n, _x)   (NODE_HSPEC_BASE(_n) | ((_x) & TO_PHYS_MASK))
  71 
  72 
  73 #define RAW_NODE_SWIN_BASE(nasid, widget)                               \
  74         (NODE_IO_BASE(nasid) + (UINT64_CAST(widget) << SWIN_SIZE_BITS))
  75 
  76 #define WIDGETID_GET(addr)      ((unsigned char)((addr >> SWIN_SIZE_BITS) & 0xff))
  77 
  78 /*
  79  * The following definitions pertain to the IO special address
  80  * space.  They define the location of the big and little windows
  81  * of any given node.
  82  */
  83 
  84 #define SWIN_SIZE_BITS          24
  85 #define SWIN_SIZE               (UINT64_CAST 1 << 24)
  86 #define SWIN_SIZEMASK           (SWIN_SIZE - 1)
  87 #define SWIN_WIDGET_MASK        0xF
  88 
  89 /*
  90  * Convert smallwindow address to xtalk address.
  91  *
  92  * 'addr' can be physical or virtual address, but will be converted
  93  * to Xtalk address in the range 0 -> SWINZ_SIZEMASK
  94  */
  95 #define SWIN_WIDGETADDR(addr)   ((addr) & SWIN_SIZEMASK)
  96 #define SWIN_WIDGETNUM(addr)    (((addr)  >> SWIN_SIZE_BITS) & SWIN_WIDGET_MASK)
  97 /*
  98  * Verify if addr belongs to small window address on node with "nasid"
  99  *
 100  *
 101  * NOTE: "addr" is expected to be XKPHYS address, and NOT physical
 102  * address
 103  *
 104  *
 105  */
 106 #define NODE_SWIN_ADDR(nasid, addr)     \
 107                 (((addr) >= NODE_SWIN_BASE(nasid, 0))  && \
 108                  ((addr) <  (NODE_SWIN_BASE(nasid, HUB_NUM_WIDGET) + SWIN_SIZE)\
 109                  ))
 110 
 111 /*
 112  * The following define the major position-independent aliases used
 113  * in SN.
 114  *      UALIAS -- 256MB in size, reads in the UALIAS result in
 115  *                      uncached references to the memory of the reader's node.
 116  *      CPU_UALIAS -- 128kb in size, the bottom part of UALIAS is flipped
 117  *                      depending on which CPU does the access to provide
 118  *                      all CPUs with unique uncached memory at low addresses.
 119  *      LBOOT  -- 256MB in size, reads in the LBOOT area result in
 120  *                      uncached references to the local hub's boot prom and
 121  *                      other directory-bus connected devices.
 122  *      IALIAS -- 8MB in size, reads in the IALIAS result in uncached
 123  *                      references to the local hub's registers.
 124  */
 125 
 126 #define UALIAS_BASE             HSPEC_BASE
 127 #define UALIAS_SIZE             0x10000000      /* 256 Megabytes */
 128 #define UALIAS_LIMIT            (UALIAS_BASE + UALIAS_SIZE)
 129 
 130 /*
 131  * The bottom of ualias space is flipped depending on whether you're
 132  * processor 0 or 1 within a node.
 133  */
 134 #ifdef CONFIG_SGI_IP27
 135 #define UALIAS_FLIP_BASE        UALIAS_BASE
 136 #define UALIAS_FLIP_SIZE        0x20000
 137 #define UALIAS_FLIP_BIT         0x10000
 138 #define UALIAS_FLIP_ADDR(_x)    (cputoslice(smp_processor_id()) ? \
 139                                  (_x) ^ UALIAS_FLIP_BIT : (_x))
 140 
 141 #define LBOOT_BASE              (HSPEC_BASE + 0x10000000)
 142 #define LBOOT_SIZE              0x10000000
 143 #define LBOOT_LIMIT             (LBOOT_BASE + LBOOT_SIZE)
 144 #define LBOOT_STRIDE            0               /* IP27 has only one CPU PROM */
 145 
 146 #endif
 147 
 148 #define HUB_REGISTER_WIDGET     1
 149 #define IALIAS_BASE             NODE_SWIN_BASE(0, HUB_REGISTER_WIDGET)
 150 #define IALIAS_SIZE             0x800000        /* 8 Megabytes */
 151 #define IS_IALIAS(_a)           (((_a) >= IALIAS_BASE) &&               \
 152                                  ((_a) < (IALIAS_BASE + IALIAS_SIZE)))
 153 
 154 /*
 155  * Macro for referring to Hub's RBOOT space
 156  */
 157 
 158 #ifdef CONFIG_SGI_IP27
 159 #define RBOOT_SIZE              0x10000000      /* 256 Megabytes */
 160 #define NODE_RBOOT_BASE(_n)     (NODE_HSPEC_BASE(_n) + 0x30000000)
 161 #define NODE_RBOOT_LIMIT(_n)    (NODE_RBOOT_BASE(_n) + RBOOT_SIZE)
 162 
 163 #endif
 164 
 165 /*
 166  * Macros for referring the Hub's back door space
 167  *
 168  *   These macros correctly process addresses in any node's space.
 169  *   WARNING: They won't work in assembler.
 170  *
 171  *   BDDIR_ENTRY_LO returns the address of the low double-word of the dir
 172  *                  entry corresponding to a physical (Cac or Uncac) address.
 173  *   BDDIR_ENTRY_HI returns the address of the high double-word of the entry.
 174  *   BDPRT_ENTRY    returns the address of the double-word protection entry
 175  *                  corresponding to the page containing the physical address.
 176  *   BDPRT_ENTRY_S  Stores the value into the protection entry.
 177  *   BDPRT_ENTRY_L  Load the value from the protection entry.
 178  *   BDECC_ENTRY    returns the address of the ECC byte corresponding to a
 179  *                  double-word at a specified physical address.
 180  *   BDECC_ENTRY_H  returns the address of the two ECC bytes corresponding to a
 181  *                  quad-word at a specified physical address.
 182  */
 183 #define NODE_BDOOR_BASE(_n)     (NODE_HSPEC_BASE(_n) + (NODE_ADDRSPACE_SIZE/2))
 184 
 185 #define NODE_BDECC_BASE(_n)     (NODE_BDOOR_BASE(_n))
 186 #define NODE_BDDIR_BASE(_n)     (NODE_BDOOR_BASE(_n) + (NODE_ADDRSPACE_SIZE/4))
 187 #ifdef CONFIG_SGI_IP27
 188 #define BDDIR_ENTRY_LO(_pa)     ((HSPEC_BASE +                                \
 189                                   NODE_ADDRSPACE_SIZE * 3 / 4 +               \
 190                                   0x200)                                    | \
 191                                  UINT64_CAST(_pa)        & NASID_MASK       | \
 192                                  UINT64_CAST(_pa) >> 2 & BDDIR_UPPER_MASK  | \
 193                                  UINT64_CAST(_pa) >> 3 & 0x1f << 4)
 194 
 195 #define BDDIR_ENTRY_HI(_pa)     ((HSPEC_BASE +                                \
 196                                   NODE_ADDRSPACE_SIZE * 3 / 4 +               \
 197                                   0x208)                                    | \
 198                                  UINT64_CAST(_pa)        & NASID_MASK       | \
 199                                  UINT64_CAST(_pa) >> 2 & BDDIR_UPPER_MASK  | \
 200                                  UINT64_CAST(_pa) >> 3 & 0x1f << 4)
 201 
 202 #define BDPRT_ENTRY(_pa, _rgn)  ((HSPEC_BASE +                                \
 203                                   NODE_ADDRSPACE_SIZE * 3 / 4)              | \
 204                                  UINT64_CAST(_pa)        & NASID_MASK       | \
 205                                  UINT64_CAST(_pa) >> 2 & BDDIR_UPPER_MASK  | \
 206                                  (_rgn) << 3)
 207 #define BDPRT_ENTRY_ADDR(_pa, _rgn) (BDPRT_ENTRY((_pa), (_rgn)))
 208 #define BDPRT_ENTRY_S(_pa, _rgn, _val) (*(__psunsigned_t *)BDPRT_ENTRY((_pa), (_rgn))=(_val))
 209 #define BDPRT_ENTRY_L(_pa, _rgn)        (*(__psunsigned_t *)BDPRT_ENTRY((_pa), (_rgn)))
 210 
 211 #define BDECC_ENTRY(_pa)        ((HSPEC_BASE +                                \
 212                                   NODE_ADDRSPACE_SIZE / 2)                  | \
 213                                  UINT64_CAST(_pa)        & NASID_MASK       | \
 214                                  UINT64_CAST(_pa) >> 2 & BDECC_UPPER_MASK  | \
 215                                  UINT64_CAST(_pa) >> 3 & 3)
 216 
 217 /*
 218  * Macro to convert a back door directory or protection address into the
 219  *   raw physical address of the associated cache line or protection page.
 220  */
 221 #define BDADDR_IS_DIR(_ba)      ((UINT64_CAST  (_ba) & 0x200) != 0)
 222 #define BDADDR_IS_PRT(_ba)      ((UINT64_CAST  (_ba) & 0x200) == 0)
 223 
 224 #define BDDIR_TO_MEM(_ba)       (UINT64_CAST (_ba) & NASID_MASK            | \
 225                                  (UINT64_CAST(_ba) & BDDIR_UPPER_MASK)<<2  | \
 226                                  (UINT64_CAST(_ba) & 0x1f << 4) << 3)
 227 
 228 #define BDPRT_TO_MEM(_ba)       (UINT64_CAST (_ba) & NASID_MASK     | \
 229                                  (UINT64_CAST(_ba) & BDDIR_UPPER_MASK)<<2)
 230 
 231 #define BDECC_TO_MEM(_ba)       (UINT64_CAST (_ba) & NASID_MASK     | \
 232                                  (UINT64_CAST(_ba) & BDECC_UPPER_MASK)<<2  | \
 233                                  (UINT64_CAST(_ba) & 3) << 3)
 234 #endif /* CONFIG_SGI_IP27 */
 235 
 236 
 237 /*
 238  * The following macros produce the correct base virtual address for
 239  * the hub registers.  The LOCAL_HUB_* macros produce the appropriate
 240  * address for the local registers.  The REMOTE_HUB_* macro produce
 241  * the address for the specified hub's registers.  The intent is
 242  * that the appropriate PI, MD, NI, or II register would be substituted
 243  * for _x.
 244  */
 245 
 246 /*
 247  * WARNING:
 248  *      When certain Hub chip workaround are defined, it's not sufficient
 249  *      to dereference the *_HUB_ADDR() macros.  You should instead use
 250  *      HUB_L() and HUB_S() if you must deal with pointers to hub registers.
 251  *      Otherwise, the recommended approach is to use *_HUB_L() and *_HUB_S().
 252  *      They're always safe.
 253  */
 254 #define LOCAL_HUB_ADDR(_x)      (IALIAS_BASE + (_x))
 255 #define REMOTE_HUB_ADDR(_n, _x) ((NODE_SWIN_BASE(_n, 1) + 0x800000 + (_x)))
 256 
 257 #ifndef __ASSEMBLY__
 258 
 259 #define LOCAL_HUB_PTR(_x)       ((u64 *)LOCAL_HUB_ADDR((_x)))
 260 #define REMOTE_HUB_PTR(_n, _x)  ((u64 *)REMOTE_HUB_ADDR((_n), (_x)))
 261 
 262 #define LOCAL_HUB_L(_r)                 __raw_readq(LOCAL_HUB_PTR(_r))
 263 #define LOCAL_HUB_S(_r, _d)             __raw_writeq((_d), LOCAL_HUB_PTR(_r))
 264 #define REMOTE_HUB_L(_n, _r)            __raw_readq(REMOTE_HUB_PTR((_n), (_r)))
 265 #define REMOTE_HUB_S(_n, _r, _d)        __raw_writeq((_d),              \
 266                                                 REMOTE_HUB_PTR((_n), (_r)))
 267 
 268 #endif /* !__ASSEMBLY__ */
 269 
 270 /*
 271  * Software structure locations -- permanently fixed
 272  *    See diagram in kldir.h
 273  */
 274 
 275 #define PHYS_RAMBASE            0x0
 276 #define K0_RAMBASE              PHYS_TO_K0(PHYS_RAMBASE)
 277 
 278 #define EX_HANDLER_OFFSET(slice) ((slice) << 16)
 279 #define EX_HANDLER_ADDR(nasid, slice)                                   \
 280         PHYS_TO_K0(NODE_OFFSET(nasid) | EX_HANDLER_OFFSET(slice))
 281 #define EX_HANDLER_SIZE         0x0400
 282 
 283 #define EX_FRAME_OFFSET(slice)  ((slice) << 16 | 0x400)
 284 #define EX_FRAME_ADDR(nasid, slice)                                     \
 285         PHYS_TO_K0(NODE_OFFSET(nasid) | EX_FRAME_OFFSET(slice))
 286 #define EX_FRAME_SIZE           0x0c00
 287 
 288 #define ARCS_SPB_OFFSET         0x1000
 289 #define ARCS_SPB_ADDR(nasid)                                            \
 290         PHYS_TO_K0(NODE_OFFSET(nasid) | ARCS_SPB_OFFSET)
 291 #define ARCS_SPB_SIZE           0x0400
 292 
 293 #define KLDIR_OFFSET            0x2000
 294 #define KLDIR_ADDR(nasid)                                               \
 295         TO_NODE_UNCAC((nasid), KLDIR_OFFSET)
 296 #define KLDIR_SIZE              0x0400
 297 
 298 
 299 /*
 300  * Software structure locations -- indirected through KLDIR
 301  *    See diagram in kldir.h
 302  *
 303  * Important:   All low memory structures must only be accessed
 304  *              uncached, except for the symmon stacks.
 305  */
 306 
 307 #define KLI_LAUNCH              0               /* Dir. entries */
 308 #define KLI_KLCONFIG            1
 309 #define KLI_NMI                 2
 310 #define KLI_GDA                 3
 311 #define KLI_FREEMEM             4
 312 #define KLI_SYMMON_STK          5
 313 #define KLI_PI_ERROR            6
 314 #define KLI_KERN_VARS           7
 315 #define KLI_KERN_XP             8
 316 #define KLI_KERN_PARTID         9
 317 
 318 #ifndef __ASSEMBLY__
 319 
 320 #define KLD_BASE(nasid)         ((kldir_ent_t *) KLDIR_ADDR(nasid))
 321 #define KLD_LAUNCH(nasid)       (KLD_BASE(nasid) + KLI_LAUNCH)
 322 #define KLD_NMI(nasid)          (KLD_BASE(nasid) + KLI_NMI)
 323 #define KLD_KLCONFIG(nasid)     (KLD_BASE(nasid) + KLI_KLCONFIG)
 324 #define KLD_PI_ERROR(nasid)     (KLD_BASE(nasid) + KLI_PI_ERROR)
 325 #define KLD_GDA(nasid)          (KLD_BASE(nasid) + KLI_GDA)
 326 #define KLD_SYMMON_STK(nasid)   (KLD_BASE(nasid) + KLI_SYMMON_STK)
 327 #define KLD_FREEMEM(nasid)      (KLD_BASE(nasid) + KLI_FREEMEM)
 328 #define KLD_KERN_VARS(nasid)    (KLD_BASE(nasid) + KLI_KERN_VARS)
 329 #define KLD_KERN_XP(nasid)      (KLD_BASE(nasid) + KLI_KERN_XP)
 330 #define KLD_KERN_PARTID(nasid)  (KLD_BASE(nasid) + KLI_KERN_PARTID)
 331 
 332 #define LAUNCH_OFFSET(nasid, slice)                                     \
 333         (KLD_LAUNCH(nasid)->offset +                                    \
 334          KLD_LAUNCH(nasid)->stride * (slice))
 335 #define LAUNCH_ADDR(nasid, slice)                                       \
 336         TO_NODE_UNCAC((nasid), LAUNCH_OFFSET(nasid, slice))
 337 #define LAUNCH_SIZE(nasid)      KLD_LAUNCH(nasid)->size
 338 
 339 #define SN_NMI_OFFSET(nasid, slice)                                     \
 340         (KLD_NMI(nasid)->offset +                                       \
 341          KLD_NMI(nasid)->stride * (slice))
 342 #define NMI_ADDR(nasid, slice)                                          \
 343         TO_NODE_UNCAC((nasid), SN_NMI_OFFSET(nasid, slice))
 344 #define NMI_SIZE(nasid) KLD_NMI(nasid)->size
 345 
 346 #define KLCONFIG_OFFSET(nasid)  KLD_KLCONFIG(nasid)->offset
 347 #define KLCONFIG_ADDR(nasid)                                            \
 348         TO_NODE_UNCAC((nasid), KLCONFIG_OFFSET(nasid))
 349 #define KLCONFIG_SIZE(nasid)    KLD_KLCONFIG(nasid)->size
 350 
 351 #define GDA_ADDR(nasid)         KLD_GDA(nasid)->pointer
 352 #define GDA_SIZE(nasid)         KLD_GDA(nasid)->size
 353 
 354 #define SYMMON_STK_OFFSET(nasid, slice)                                 \
 355         (KLD_SYMMON_STK(nasid)->offset +                                \
 356          KLD_SYMMON_STK(nasid)->stride * (slice))
 357 #define SYMMON_STK_STRIDE(nasid)        KLD_SYMMON_STK(nasid)->stride
 358 
 359 #define SYMMON_STK_ADDR(nasid, slice)                                   \
 360         TO_NODE_CAC((nasid), SYMMON_STK_OFFSET(nasid, slice))
 361 
 362 #define SYMMON_STK_SIZE(nasid)  KLD_SYMMON_STK(nasid)->stride
 363 
 364 #define SYMMON_STK_END(nasid)   (SYMMON_STK_ADDR(nasid, 0) + KLD_SYMMON_STK(nasid)->size)
 365 
 366 #define NODE_OFFSET_TO_K0(_nasid, _off)                                 \
 367         PHYS_TO_K0((NODE_OFFSET(_nasid) + (_off)) | CAC_BASE)
 368 #define NODE_OFFSET_TO_K1(_nasid, _off)                                 \
 369         TO_UNCAC((NODE_OFFSET(_nasid) + (_off)) | UNCAC_BASE)
 370 
 371 #define KERN_VARS_ADDR(nasid)   KLD_KERN_VARS(nasid)->pointer
 372 #define KERN_VARS_SIZE(nasid)   KLD_KERN_VARS(nasid)->size
 373 
 374 #endif /* !__ASSEMBLY__ */
 375 
 376 
 377 #endif /* _ASM_SN_ADDRS_H */
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