LXR linux/arch/mips/include/asm/sn/addrs.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 * 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 PS_UINT_CAST            (unsigned long)
  31#define UINT64_CAST             (unsigned long)
  32
  33#define HUBREG_CAST             (volatile hubreg_t *)
  34
  35#else /* __ASSEMBLY__ */
  36
  37#define PS_UINT_CAST
  38#define UINT64_CAST
  39#define HUBREG_CAST
  40
  41#endif /* __ASSEMBLY__ */
  42
  43
  44#define NASID_GET_META(_n)      ((_n) >> NASID_LOCAL_BITS)
  45#ifdef CONFIG_SGI_IP27
  46#define NASID_GET_LOCAL(_n)     ((_n) & 0xf)
  47#endif
  48#define NASID_MAKE(_m, _l)      (((_m) << NASID_LOCAL_BITS) | (_l))
  49
  50#define NODE_ADDRSPACE_MASK     (NODE_ADDRSPACE_SIZE - 1)
  51#define TO_NODE_ADDRSPACE(_pa)  (UINT64_CAST (_pa) & NODE_ADDRSPACE_MASK)
  52
  53#define CHANGE_ADDR_NASID(_pa, _nasid)  \
  54                ((UINT64_CAST(_pa) & ~NASID_MASK) | \
  55                 (UINT64_CAST(_nasid) <<  NASID_SHFT))
  56
  57
  58/*
  59 * The following macros are used to index to the beginning of a specific
  60 * node's address space.
  61 */
  62
  63#define NODE_OFFSET(_n)         (UINT64_CAST (_n) << NODE_SIZE_BITS)
  64
  65#define NODE_CAC_BASE(_n)       (CAC_BASE   + NODE_OFFSET(_n))
  66#define NODE_HSPEC_BASE(_n)     (HSPEC_BASE + NODE_OFFSET(_n))
  67#define NODE_IO_BASE(_n)        (IO_BASE    + NODE_OFFSET(_n))
  68#define NODE_MSPEC_BASE(_n)     (MSPEC_BASE + NODE_OFFSET(_n))
  69#define NODE_UNCAC_BASE(_n)     (UNCAC_BASE + NODE_OFFSET(_n))
  70
  71#define TO_NODE(_n, _x)         (NODE_OFFSET(_n)     | ((_x)               ))
  72#define TO_NODE_CAC(_n, _x)     (NODE_CAC_BASE(_n)   | ((_x) & TO_PHYS_MASK))
  73#define TO_NODE_UNCAC(_n, _x)   (NODE_UNCAC_BASE(_n) | ((_x) & TO_PHYS_MASK))
  74#define TO_NODE_MSPEC(_n, _x)   (NODE_MSPEC_BASE(_n) | ((_x) & TO_PHYS_MASK))
  75#define TO_NODE_HSPEC(_n, _x)   (NODE_HSPEC_BASE(_n) | ((_x) & TO_PHYS_MASK))
  76
  77
  78#define RAW_NODE_SWIN_BASE(nasid, widget)                               \
  79        (NODE_IO_BASE(nasid) + (UINT64_CAST(widget) << SWIN_SIZE_BITS))
  80
  81#define WIDGETID_GET(addr)      ((unsigned char)((addr >> SWIN_SIZE_BITS) & 0xff))
  82
  83/*
  84 * The following definitions pertain to the IO special address
  85 * space.  They define the location of the big and little windows
  86 * of any given node.
  87 */
  88
  89#define SWIN_SIZE_BITS          24
  90#define SWIN_SIZE               (UINT64_CAST 1 << 24)
  91#define SWIN_SIZEMASK           (SWIN_SIZE - 1)
  92#define SWIN_WIDGET_MASK        0xF
  93
  94/*
  95 * Convert smallwindow address to xtalk address.
  96 *
  97 * 'addr' can be physical or virtual address, but will be converted
  98 * to Xtalk address in the range 0 -> SWINZ_SIZEMASK
  99 */
 100#define SWIN_WIDGETADDR(addr)   ((addr) & SWIN_SIZEMASK)
 101#define SWIN_WIDGETNUM(addr)    (((addr)  >> SWIN_SIZE_BITS) & SWIN_WIDGET_MASK)
 102/*
 103 * Verify if addr belongs to small window address on node with "nasid"
 104 *
 105 *
 106 * NOTE: "addr" is expected to be XKPHYS address, and NOT physical
 107 * address
 108 *
 109 *
 110 */
 111#define NODE_SWIN_ADDR(nasid, addr)     \
 112                (((addr) >= NODE_SWIN_BASE(nasid, 0))  && \
 113                 ((addr) <  (NODE_SWIN_BASE(nasid, HUB_NUM_WIDGET) + SWIN_SIZE)\
 114                 ))
 115
 116/*
 117 * The following define the major position-independent aliases used
 118 * in SN.
 119 *      UALIAS -- 256MB in size, reads in the UALIAS result in
 120 *                      uncached references to the memory of the reader's node.
 121 *      CPU_UALIAS -- 128kb in size, the bottom part of UALIAS is flipped
 122 *                      depending on which CPU does the access to provide
 123 *                      all CPUs with unique uncached memory at low addresses.
 124 *      LBOOT  -- 256MB in size, reads in the LBOOT area result in
 125 *                      uncached references to the local hub's boot prom and
 126 *                      other directory-bus connected devices.
 127 *      IALIAS -- 8MB in size, reads in the IALIAS result in uncached
 128 *                      references to the local hub's registers.
 129 */
 130
 131#define UALIAS_BASE             HSPEC_BASE
 132#define UALIAS_SIZE             0x10000000      /* 256 Megabytes */
 133#define UALIAS_LIMIT            (UALIAS_BASE + UALIAS_SIZE)
 134
 135/*
 136 * The bottom of ualias space is flipped depending on whether you're
 137 * processor 0 or 1 within a node.
 138 */
 139#ifdef CONFIG_SGI_IP27
 140#define UALIAS_FLIP_BASE        UALIAS_BASE
 141#define UALIAS_FLIP_SIZE        0x20000
 142#define UALIAS_FLIP_BIT         0x10000
 143#define UALIAS_FLIP_ADDR(_x)    (cputoslice(smp_processor_id()) ? \
 144                                 (_x) ^ UALIAS_FLIP_BIT : (_x))
 145
 146#define LBOOT_BASE              (HSPEC_BASE + 0x10000000)
 147#define LBOOT_SIZE              0x10000000
 148#define LBOOT_LIMIT             (LBOOT_BASE + LBOOT_SIZE)
 149#define LBOOT_STRIDE            0               /* IP27 has only one CPU PROM */
 150
 151#endif
 152
 153#define HUB_REGISTER_WIDGET     1
 154#define IALIAS_BASE             NODE_SWIN_BASE(0, HUB_REGISTER_WIDGET)
 155#define IALIAS_SIZE             0x800000        /* 8 Megabytes */
 156#define IS_IALIAS(_a)           (((_a) >= IALIAS_BASE) &&               \
 157                                 ((_a) < (IALIAS_BASE + IALIAS_SIZE)))
 158
 159/*
 160 * Macro for referring to Hub's RBOOT space
 161 */
 162
 163#ifdef CONFIG_SGI_IP27
 164#define RBOOT_SIZE              0x10000000      /* 256 Megabytes */
 165#define NODE_RBOOT_BASE(_n)     (NODE_HSPEC_BASE(_n) + 0x30000000)
 166#define NODE_RBOOT_LIMIT(_n)    (NODE_RBOOT_BASE(_n) + RBOOT_SIZE)
 167
 168#endif
 169
 170/*
 171 * Macros for referring the Hub's back door space
 172 *
 173 *   These macros correctly process addresses in any node's space.
 174 *   WARNING: They won't work in assembler.
 175 *
 176 *   BDDIR_ENTRY_LO returns the address of the low double-word of the dir
 177 *                  entry corresponding to a physical (Cac or Uncac) address.
 178 *   BDDIR_ENTRY_HI returns the address of the high double-word of the entry.
 179 *   BDPRT_ENTRY    returns the address of the double-word protection entry
 180 *                  corresponding to the page containing the physical address.
 181 *   BDPRT_ENTRY_S  Stores the value into the protection entry.
 182 *   BDPRT_ENTRY_L  Load the value from the protection entry.
 183 *   BDECC_ENTRY    returns the address of the ECC byte corresponding to a
 184 *                  double-word at a specified physical address.
 185 *   BDECC_ENTRY_H  returns the address of the two ECC bytes corresponding to a
 186 *                  quad-word at a specified physical address.
 187 */
 188#define NODE_BDOOR_BASE(_n)     (NODE_HSPEC_BASE(_n) + (NODE_ADDRSPACE_SIZE/2))
 189
 190#define NODE_BDECC_BASE(_n)     (NODE_BDOOR_BASE(_n))
 191#define NODE_BDDIR_BASE(_n)     (NODE_BDOOR_BASE(_n) + (NODE_ADDRSPACE_SIZE/4))
 192#ifdef CONFIG_SGI_IP27
 193#define BDDIR_ENTRY_LO(_pa)     ((HSPEC_BASE +                                \
 194                                  NODE_ADDRSPACE_SIZE * 3 / 4 +               \
 195                                  0x200)                                    | \
 196                                 UINT64_CAST(_pa)        & NASID_MASK       | \
 197                                 UINT64_CAST(_pa) >> 2 & BDDIR_UPPER_MASK  | \
 198                                 UINT64_CAST(_pa) >> 3 & 0x1f << 4)
 199
 200#define BDDIR_ENTRY_HI(_pa)     ((HSPEC_BASE +                                \
 201                                  NODE_ADDRSPACE_SIZE * 3 / 4 +               \
 202                                  0x208)                                    | \
 203                                 UINT64_CAST(_pa)        & NASID_MASK       | \
 204                                 UINT64_CAST(_pa) >> 2 & BDDIR_UPPER_MASK  | \
 205                                 UINT64_CAST(_pa) >> 3 & 0x1f << 4)
 206
 207#define BDPRT_ENTRY(_pa, _rgn)  ((HSPEC_BASE +                                \
 208                                  NODE_ADDRSPACE_SIZE * 3 / 4)              | \
 209                                 UINT64_CAST(_pa)        & NASID_MASK       | \
 210                                 UINT64_CAST(_pa) >> 2 & BDDIR_UPPER_MASK  | \
 211                                 (_rgn) << 3)
 212#define BDPRT_ENTRY_ADDR(_pa, _rgn) (BDPRT_ENTRY((_pa), (_rgn)))
 213#define BDPRT_ENTRY_S(_pa, _rgn, _val) (*(__psunsigned_t *)BDPRT_ENTRY((_pa), (_rgn))=(_val))
 214#define BDPRT_ENTRY_L(_pa, _rgn)        (*(__psunsigned_t *)BDPRT_ENTRY((_pa), (_rgn)))
 215
 216#define BDECC_ENTRY(_pa)        ((HSPEC_BASE +                                \
 217                                  NODE_ADDRSPACE_SIZE / 2)                  | \
 218                                 UINT64_CAST(_pa)        & NASID_MASK       | \
 219                                 UINT64_CAST(_pa) >> 2 & BDECC_UPPER_MASK  | \
 220                                 UINT64_CAST(_pa) >> 3 & 3)
 221
 222/*
 223 * Macro to convert a back door directory or protection address into the
 224 *   raw physical address of the associated cache line or protection page.
 225 */
 226#define BDADDR_IS_DIR(_ba)      ((UINT64_CAST  (_ba) & 0x200) != 0)
 227#define BDADDR_IS_PRT(_ba)      ((UINT64_CAST  (_ba) & 0x200) == 0)
 228
 229#define BDDIR_TO_MEM(_ba)       (UINT64_CAST (_ba) & NASID_MASK            | \
 230                                 (UINT64_CAST(_ba) & BDDIR_UPPER_MASK)<<2  | \
 231                                 (UINT64_CAST(_ba) & 0x1f << 4) << 3)
 232
 233#define BDPRT_TO_MEM(_ba)       (UINT64_CAST (_ba) & NASID_MASK     | \
 234                                 (UINT64_CAST(_ba) & BDDIR_UPPER_MASK)<<2)
 235
 236#define BDECC_TO_MEM(_ba)       (UINT64_CAST (_ba) & NASID_MASK     | \
 237                                 (UINT64_CAST(_ba) & BDECC_UPPER_MASK)<<2  | \
 238                                 (UINT64_CAST(_ba) & 3) << 3)
 239#endif /* CONFIG_SGI_IP27 */
 240
 241
 242/*
 243 * The following macros produce the correct base virtual address for
 244 * the hub registers.  The LOCAL_HUB_* macros produce the appropriate
 245 * address for the local registers.  The REMOTE_HUB_* macro produce
 246 * the address for the specified hub's registers.  The intent is
 247 * that the appropriate PI, MD, NI, or II register would be substituted
 248 * for _x.
 249 */
 250
 251/*
 252 * WARNING:
 253 *      When certain Hub chip workaround are defined, it's not sufficient
 254 *      to dereference the *_HUB_ADDR() macros.  You should instead use
 255 *      HUB_L() and HUB_S() if you must deal with pointers to hub registers.
 256 *      Otherwise, the recommended approach is to use *_HUB_L() and *_HUB_S().
 257 *      They're always safe.
 258 */
 259#define LOCAL_HUB_ADDR(_x)      (HUBREG_CAST (IALIAS_BASE + (_x)))
 260#define REMOTE_HUB_ADDR(_n, _x) (HUBREG_CAST (NODE_SWIN_BASE(_n, 1) +   \
 261                                              0x800000 + (_x)))
 262#ifdef CONFIG_SGI_IP27
 263#define REMOTE_HUB_PI_ADDR(_n, _sn, _x) (HUBREG_CAST (NODE_SWIN_BASE(_n, 1) +   \
 264                                              0x800000 + (_x)))
 265#endif /* CONFIG_SGI_IP27 */
 266
 267#ifndef __ASSEMBLY__
 268
 269#define HUB_L(_a)                       *(_a)
 270#define HUB_S(_a, _d)                   *(_a) = (_d)
 271
 272#define LOCAL_HUB_L(_r)                 HUB_L(LOCAL_HUB_ADDR(_r))
 273#define LOCAL_HUB_S(_r, _d)             HUB_S(LOCAL_HUB_ADDR(_r), (_d))
 274#define REMOTE_HUB_L(_n, _r)            HUB_L(REMOTE_HUB_ADDR((_n), (_r)))
 275#define REMOTE_HUB_S(_n, _r, _d)        HUB_S(REMOTE_HUB_ADDR((_n), (_r)), (_d))
 276#define REMOTE_HUB_PI_L(_n, _sn, _r)    HUB_L(REMOTE_HUB_PI_ADDR((_n), (_sn), (_r)))
 277#define REMOTE_HUB_PI_S(_n, _sn, _r, _d) HUB_S(REMOTE_HUB_PI_ADDR((_n), (_sn), (_r)), (_d))
 278
 279#endif /* !__ASSEMBLY__ */
 280
 281/*
 282 * The following macros are used to get to a hub/bridge register, given
 283 * the base of the register space.
 284 */
 285#define HUB_REG_PTR(_base, _off)        \
 286        (HUBREG_CAST((__psunsigned_t)(_base) + (__psunsigned_t)(_off)))
 287
 288#define HUB_REG_PTR_L(_base, _off)      \
 289        HUB_L(HUB_REG_PTR((_base), (_off)))
 290
 291#define HUB_REG_PTR_S(_base, _off, _data)       \
 292        HUB_S(HUB_REG_PTR((_base), (_off)), (_data))
 293
 294/*
 295 * Software structure locations -- permanently fixed
 296 *    See diagram in kldir.h
 297 */
 298
 299#define PHYS_RAMBASE            0x0
 300#define K0_RAMBASE              PHYS_TO_K0(PHYS_RAMBASE)
 301
 302#define EX_HANDLER_OFFSET(slice) ((slice) << 16)
 303#define EX_HANDLER_ADDR(nasid, slice)                                   \
 304        PHYS_TO_K0(NODE_OFFSET(nasid) | EX_HANDLER_OFFSET(slice))
 305#define EX_HANDLER_SIZE         0x0400
 306
 307#define EX_FRAME_OFFSET(slice)  ((slice) << 16 | 0x400)
 308#define EX_FRAME_ADDR(nasid, slice)                                     \
 309        PHYS_TO_K0(NODE_OFFSET(nasid) | EX_FRAME_OFFSET(slice))
 310#define EX_FRAME_SIZE           0x0c00
 311
 312#define ARCS_SPB_OFFSET         0x1000
 313#define ARCS_SPB_ADDR(nasid)                                            \
 314        PHYS_TO_K0(NODE_OFFSET(nasid) | ARCS_SPB_OFFSET)
 315#define ARCS_SPB_SIZE           0x0400
 316
 317#define KLDIR_OFFSET            0x2000
 318#define KLDIR_ADDR(nasid)                                               \
 319        TO_NODE_UNCAC((nasid), KLDIR_OFFSET)
 320#define KLDIR_SIZE              0x0400
 321
 322
 323/*
 324 * Software structure locations -- indirected through KLDIR
 325 *    See diagram in kldir.h
 326 *
 327 * Important:   All low memory structures must only be accessed
 328 *              uncached, except for the symmon stacks.
 329 */
 330
 331#define KLI_LAUNCH              0               /* Dir. entries */
 332#define KLI_KLCONFIG            1
 333#define KLI_NMI                 2
 334#define KLI_GDA                 3
 335#define KLI_FREEMEM             4
 336#define KLI_SYMMON_STK          5
 337#define KLI_PI_ERROR            6
 338#define KLI_KERN_VARS           7
 339#define KLI_KERN_XP             8
 340#define KLI_KERN_PARTID         9
 341
 342#ifndef __ASSEMBLY__
 343
 344#define KLD_BASE(nasid)         ((kldir_ent_t *) KLDIR_ADDR(nasid))
 345#define KLD_LAUNCH(nasid)       (KLD_BASE(nasid) + KLI_LAUNCH)
 346#define KLD_NMI(nasid)          (KLD_BASE(nasid) + KLI_NMI)
 347#define KLD_KLCONFIG(nasid)     (KLD_BASE(nasid) + KLI_KLCONFIG)
 348#define KLD_PI_ERROR(nasid)     (KLD_BASE(nasid) + KLI_PI_ERROR)
 349#define KLD_GDA(nasid)          (KLD_BASE(nasid) + KLI_GDA)
 350#define KLD_SYMMON_STK(nasid)   (KLD_BASE(nasid) + KLI_SYMMON_STK)
 351#define KLD_FREEMEM(nasid)      (KLD_BASE(nasid) + KLI_FREEMEM)
 352#define KLD_KERN_VARS(nasid)    (KLD_BASE(nasid) + KLI_KERN_VARS)
 353#define KLD_KERN_XP(nasid)      (KLD_BASE(nasid) + KLI_KERN_XP)
 354#define KLD_KERN_PARTID(nasid)  (KLD_BASE(nasid) + KLI_KERN_PARTID)
 355
 356#define LAUNCH_OFFSET(nasid, slice)                                     \
 357        (KLD_LAUNCH(nasid)->offset +                                    \
 358         KLD_LAUNCH(nasid)->stride * (slice))
 359#define LAUNCH_ADDR(nasid, slice)                                       \
 360        TO_NODE_UNCAC((nasid), LAUNCH_OFFSET(nasid, slice))
 361#define LAUNCH_SIZE(nasid)      KLD_LAUNCH(nasid)->size
 362
 363#define SN_NMI_OFFSET(nasid, slice)                                     \
 364        (KLD_NMI(nasid)->offset +                                       \
 365         KLD_NMI(nasid)->stride * (slice))
 366#define NMI_ADDR(nasid, slice)                                          \
 367        TO_NODE_UNCAC((nasid), SN_NMI_OFFSET(nasid, slice))
 368#define NMI_SIZE(nasid) KLD_NMI(nasid)->size
 369
 370#define KLCONFIG_OFFSET(nasid)  KLD_KLCONFIG(nasid)->offset
 371#define KLCONFIG_ADDR(nasid)                                            \
 372        TO_NODE_UNCAC((nasid), KLCONFIG_OFFSET(nasid))
 373#define KLCONFIG_SIZE(nasid)    KLD_KLCONFIG(nasid)->size
 374
 375#define GDA_ADDR(nasid)         KLD_GDA(nasid)->pointer
 376#define GDA_SIZE(nasid)         KLD_GDA(nasid)->size
 377
 378#define SYMMON_STK_OFFSET(nasid, slice)                                 \
 379        (KLD_SYMMON_STK(nasid)->offset +                                \
 380         KLD_SYMMON_STK(nasid)->stride * (slice))
 381#define SYMMON_STK_STRIDE(nasid)        KLD_SYMMON_STK(nasid)->stride
 382
 383#define SYMMON_STK_ADDR(nasid, slice)                                   \
 384        TO_NODE_CAC((nasid), SYMMON_STK_OFFSET(nasid, slice))
 385
 386#define SYMMON_STK_SIZE(nasid)  KLD_SYMMON_STK(nasid)->stride
 387
 388#define SYMMON_STK_END(nasid)   (SYMMON_STK_ADDR(nasid, 0) + KLD_SYMMON_STK(nasid)->size)
 389
 390/* loading symmon 4k below UNIX. the arcs loader needs the topaddr for a
 391 * relocatable program
 392 */
 393#define UNIX_DEBUG_LOADADDR     0x300000
 394#define SYMMON_LOADADDR(nasid)                                          \
 395        TO_NODE(nasid, PHYS_TO_K0(UNIX_DEBUG_LOADADDR - 0x1000))
 396
 397#define FREEMEM_OFFSET(nasid)   KLD_FREEMEM(nasid)->offset
 398#define FREEMEM_ADDR(nasid)     SYMMON_STK_END(nasid)
 399/*
 400 * XXX
 401 * Fix this. FREEMEM_ADDR should be aware of if symmon is loaded.
 402 * Also, it should take into account what prom thinks to be a safe
 403 * address
 404        PHYS_TO_K0(NODE_OFFSET(nasid) + FREEMEM_OFFSET(nasid))
 405 */
 406#define FREEMEM_SIZE(nasid)     KLD_FREEMEM(nasid)->size
 407
 408#define PI_ERROR_OFFSET(nasid)  KLD_PI_ERROR(nasid)->offset
 409#define PI_ERROR_ADDR(nasid)                                            \
 410        TO_NODE_UNCAC((nasid), PI_ERROR_OFFSET(nasid))
 411#define PI_ERROR_SIZE(nasid)    KLD_PI_ERROR(nasid)->size
 412
 413#define NODE_OFFSET_TO_K0(_nasid, _off)                                 \
 414        PHYS_TO_K0((NODE_OFFSET(_nasid) + (_off)) | CAC_BASE)
 415#define NODE_OFFSET_TO_K1(_nasid, _off)                                 \
 416        TO_UNCAC((NODE_OFFSET(_nasid) + (_off)) | UNCAC_BASE)
 417#define K0_TO_NODE_OFFSET(_k0addr)                                      \
 418        ((__psunsigned_t)(_k0addr) & NODE_ADDRSPACE_MASK)
 419
 420#define KERN_VARS_ADDR(nasid)   KLD_KERN_VARS(nasid)->pointer
 421#define KERN_VARS_SIZE(nasid)   KLD_KERN_VARS(nasid)->size
 422
 423#define KERN_XP_ADDR(nasid)     KLD_KERN_XP(nasid)->pointer
 424#define KERN_XP_SIZE(nasid)     KLD_KERN_XP(nasid)->size
 425
 426#define GPDA_ADDR(nasid)        TO_NODE_CAC(nasid, GPDA_OFFSET)
 427
 428#endif /* !__ASSEMBLY__ */
 429
 430
 431#endif /* _ASM_SN_ADDRS_H */
 432