include/asm-alpha/core_t2.h

   1 #ifndef __ALPHA_T2__H__
   2 #define __ALPHA_T2__H__
   3
   4 #include <linux/types.h>
   5 #include <linux/spinlock.h>
   6 #include <asm/compiler.h>
   7 #include <asm/system.h>
   8
   9 /*
  10  * T2 is the internal name for the core logic chipset which provides
  11  * memory controller and PCI access for the SABLE-based systems.
  12  *
  13  * This file is based on:
  14  *
  15  * SABLE I/O Specification
  16  * Revision/Update Information: 1.3
  17  *
  18  * jestabro@amt.tay1.dec.com Initial Version.
  19  *
  20  */
  21
  22 #define T2_MEM_R1_MASK 0x07ffffff  /* Mem sparse region 1 mask is 26 bits */
  23
  24 /* GAMMA-SABLE is a SABLE with EV5-based CPUs */
  25 /* All LYNX machines, EV4 or EV5, use the GAMMA bias also */
  26 #define _GAMMA_BIAS             0x8000000000UL
  27
  28 #if defined(CONFIG_ALPHA_GENERIC)
  29 #define GAMMA_BIAS              alpha_mv.sys.t2.gamma_bias
  30 #elif defined(CONFIG_ALPHA_GAMMA)
  31 #define GAMMA_BIAS              _GAMMA_BIAS
  32 #else
  33 #define GAMMA_BIAS              0
  34 #endif
  35
  36 /*
  37  * Memory spaces:
  38  */
  39 #define T2_CONF                 (IDENT_ADDR + GAMMA_BIAS + 0x390000000UL)
  40 #define T2_IO                   (IDENT_ADDR + GAMMA_BIAS + 0x3a0000000UL)
  41 #define T2_SPARSE_MEM           (IDENT_ADDR + GAMMA_BIAS + 0x200000000UL)
  42 #define T2_DENSE_MEM            (IDENT_ADDR + GAMMA_BIAS + 0x3c0000000UL)
  43
  44 #define T2_IOCSR                (IDENT_ADDR + GAMMA_BIAS + 0x38e000000UL)
  45 #define T2_CERR1                (IDENT_ADDR + GAMMA_BIAS + 0x38e000020UL)
  46 #define T2_CERR2                (IDENT_ADDR + GAMMA_BIAS + 0x38e000040UL)
  47 #define T2_CERR3                (IDENT_ADDR + GAMMA_BIAS + 0x38e000060UL)
  48 #define T2_PERR1                (IDENT_ADDR + GAMMA_BIAS + 0x38e000080UL)
  49 #define T2_PERR2                (IDENT_ADDR + GAMMA_BIAS + 0x38e0000a0UL)
  50 #define T2_PSCR                 (IDENT_ADDR + GAMMA_BIAS + 0x38e0000c0UL)
  51 #define T2_HAE_1                (IDENT_ADDR + GAMMA_BIAS + 0x38e0000e0UL)
  52 #define T2_HAE_2                (IDENT_ADDR + GAMMA_BIAS + 0x38e000100UL)
  53 #define T2_HBASE                (IDENT_ADDR + GAMMA_BIAS + 0x38e000120UL)
  54 #define T2_WBASE1               (IDENT_ADDR + GAMMA_BIAS + 0x38e000140UL)
  55 #define T2_WMASK1               (IDENT_ADDR + GAMMA_BIAS + 0x38e000160UL)
  56 #define T2_TBASE1               (IDENT_ADDR + GAMMA_BIAS + 0x38e000180UL)
  57 #define T2_WBASE2               (IDENT_ADDR + GAMMA_BIAS + 0x38e0001a0UL)
  58 #define T2_WMASK2               (IDENT_ADDR + GAMMA_BIAS + 0x38e0001c0UL)
  59 #define T2_TBASE2               (IDENT_ADDR + GAMMA_BIAS + 0x38e0001e0UL)
  60 #define T2_TLBBR                (IDENT_ADDR + GAMMA_BIAS + 0x38e000200UL)
  61 #define T2_IVR                  (IDENT_ADDR + GAMMA_BIAS + 0x38e000220UL)
  62 #define T2_HAE_3                (IDENT_ADDR + GAMMA_BIAS + 0x38e000240UL)
  63 #define T2_HAE_4                (IDENT_ADDR + GAMMA_BIAS + 0x38e000260UL)
  64
  65 /* The CSRs below are T3/T4 only */
  66 #define T2_WBASE3               (IDENT_ADDR + GAMMA_BIAS + 0x38e000280UL)
  67 #define T2_WMASK3               (IDENT_ADDR + GAMMA_BIAS + 0x38e0002a0UL)
  68 #define T2_TBASE3               (IDENT_ADDR + GAMMA_BIAS + 0x38e0002c0UL)
  69
  70 #define T2_TDR0                 (IDENT_ADDR + GAMMA_BIAS + 0x38e000300UL)
  71 #define T2_TDR1                 (IDENT_ADDR + GAMMA_BIAS + 0x38e000320UL)
  72 #define T2_TDR2                 (IDENT_ADDR + GAMMA_BIAS + 0x38e000340UL)
  73 #define T2_TDR3                 (IDENT_ADDR + GAMMA_BIAS + 0x38e000360UL)
  74 #define T2_TDR4                 (IDENT_ADDR + GAMMA_BIAS + 0x38e000380UL)
  75 #define T2_TDR5                 (IDENT_ADDR + GAMMA_BIAS + 0x38e0003a0UL)
  76 #define T2_TDR6                 (IDENT_ADDR + GAMMA_BIAS + 0x38e0003c0UL)
  77 #define T2_TDR7                 (IDENT_ADDR + GAMMA_BIAS + 0x38e0003e0UL)
  78
  79 #define T2_WBASE4               (IDENT_ADDR + GAMMA_BIAS + 0x38e000400UL)
  80 #define T2_WMASK4               (IDENT_ADDR + GAMMA_BIAS + 0x38e000420UL)
  81 #define T2_TBASE4               (IDENT_ADDR + GAMMA_BIAS + 0x38e000440UL)
  82
  83 #define T2_AIR                  (IDENT_ADDR + GAMMA_BIAS + 0x38e000460UL)
  84 #define T2_VAR                  (IDENT_ADDR + GAMMA_BIAS + 0x38e000480UL)
  85 #define T2_DIR                  (IDENT_ADDR + GAMMA_BIAS + 0x38e0004a0UL)
  86 #define T2_ICE                  (IDENT_ADDR + GAMMA_BIAS + 0x38e0004c0UL)
  87
  88 #define T2_HAE_ADDRESS          T2_HAE_1
  89
  90 /*  T2 CSRs are in the non-cachable primary IO space from 3.8000.0000 to
  91  3.8fff.ffff
  92  *
  93  *  +--------------+ 3 8000 0000
  94  *  | CPU 0 CSRs   |
  95  *  +--------------+ 3 8100 0000
  96  *  | CPU 1 CSRs   |
  97  *  +--------------+ 3 8200 0000
  98  *  | CPU 2 CSRs   |
  99  *  +--------------+ 3 8300 0000
 100  *  | CPU 3 CSRs   |
 101  *  +--------------+ 3 8400 0000
 102  *  | CPU Reserved |
 103  *  +--------------+ 3 8700 0000
 104  *  | Mem Reserved |
 105  *  +--------------+ 3 8800 0000
 106  *  | Mem 0 CSRs   |
 107  *  +--------------+ 3 8900 0000
 108  *  | Mem 1 CSRs   |
 109  *  +--------------+ 3 8a00 0000
 110  *  | Mem 2 CSRs   |
 111  *  +--------------+ 3 8b00 0000
 112  *  | Mem 3 CSRs   |
 113  *  +--------------+ 3 8c00 0000
 114  *  | Mem Reserved |
 115  *  +--------------+ 3 8e00 0000
 116  *  | PCI Bridge   |
 117  *  +--------------+ 3 8f00 0000
 118  *  | Expansion IO |
 119  *  +--------------+ 3 9000 0000
 120  *
 121  *
 122  */
 123 #define T2_CPU0_BASE            (IDENT_ADDR + GAMMA_BIAS + 0x380000000L)
 124 #define T2_CPU1_BASE            (IDENT_ADDR + GAMMA_BIAS + 0x381000000L)
 125 #define T2_CPU2_BASE            (IDENT_ADDR + GAMMA_BIAS + 0x382000000L)
 126 #define T2_CPU3_BASE            (IDENT_ADDR + GAMMA_BIAS + 0x383000000L)
 127
 128 #define T2_CPUn_BASE(n)         (T2_CPU0_BASE + (((n)&3) * 0x001000000L))
 129
 130 #define T2_MEM0_BASE            (IDENT_ADDR + GAMMA_BIAS + 0x388000000L)
 131 #define T2_MEM1_BASE            (IDENT_ADDR + GAMMA_BIAS + 0x389000000L)
 132 #define T2_MEM2_BASE            (IDENT_ADDR + GAMMA_BIAS + 0x38a000000L)
 133 #define T2_MEM3_BASE            (IDENT_ADDR + GAMMA_BIAS + 0x38b000000L)
 134
 135
 136 /*
 137  * Sable CPU Module CSRS
 138  *
 139  * These are CSRs for hardware other than the CPU chip on the CPU module.
 140  * The CPU module has Backup Cache control logic, Cbus control logic, and
 141  * interrupt control logic on it.  There is a duplicate tag store to speed
 142  * up maintaining cache coherency.
 143  */
 144
 145 struct sable_cpu_csr {
 146   unsigned long bcc;     long fill_00[3]; /* Backup Cache Control */
 147   unsigned long bcce;    long fill_01[3]; /* Backup Cache Correctable Error */
 148   unsigned long bccea;   long fill_02[3]; /* B-Cache Corr Err Address Latch */
 149   unsigned long bcue;    long fill_03[3]; /* B-Cache Uncorrectable Error */
 150   unsigned long bcuea;   long fill_04[3]; /* B-Cache Uncorr Err Addr Latch */
 151   unsigned long dter;    long fill_05[3]; /* Duplicate Tag Error */
 152   unsigned long cbctl;   long fill_06[3]; /* CBus Control */
 153   unsigned long cbe;     long fill_07[3]; /* CBus Error */
 154   unsigned long cbeal;   long fill_08[3]; /* CBus Error Addr Latch low */
 155   unsigned long cbeah;   long fill_09[3]; /* CBus Error Addr Latch high */
 156   unsigned long pmbx;    long fill_10[3]; /* Processor Mailbox */
 157   unsigned long ipir;    long fill_11[3]; /* Inter-Processor Int Request */
 158   unsigned long sic;     long fill_12[3]; /* System Interrupt Clear */
 159   unsigned long adlk;    long fill_13[3]; /* Address Lock (LDxL/STxC) */
 160   unsigned long madrl;   long fill_14[3]; /* CBus Miss Address */
 161   unsigned long rev;     long fill_15[3]; /* CMIC Revision */
 162 };
 163
 164 /*
 165  * Data structure for handling T2 machine checks:
 166  */
 167 struct el_t2_frame_header {
 168         unsigned int    elcf_fid;       /* Frame ID (from above) */
 169         unsigned int    elcf_size;      /* Size of frame in bytes */
 170 };
 171
 172 struct el_t2_procdata_mcheck {
 173         unsigned long   elfmc_paltemp[32];      /* PAL TEMP REGS. */
 174         /* EV4-specific fields */
 175         unsigned long   elfmc_exc_addr; /* Addr of excepting insn. */
 176         unsigned long   elfmc_exc_sum;  /* Summary of arith traps. */
 177         unsigned long   elfmc_exc_mask; /* Exception mask (from exc_sum). */
 178         unsigned long   elfmc_iccsr;    /* IBox hardware enables. */
 179         unsigned long   elfmc_pal_base; /* Base address for PALcode. */
 180         unsigned long   elfmc_hier;     /* Hardware Interrupt Enable. */
 181         unsigned long   elfmc_hirr;     /* Hardware Interrupt Request. */
 182         unsigned long   elfmc_mm_csr;   /* D-stream fault info. */
 183         unsigned long   elfmc_dc_stat;  /* D-cache status (ECC/Parity Err). */
 184         unsigned long   elfmc_dc_addr;  /* EV3 Phys Addr for ECC/DPERR. */
 185         unsigned long   elfmc_abox_ctl; /* ABox Control Register. */
 186         unsigned long   elfmc_biu_stat; /* BIU Status. */
 187         unsigned long   elfmc_biu_addr; /* BUI Address. */
 188         unsigned long   elfmc_biu_ctl;  /* BIU Control. */
 189         unsigned long   elfmc_fill_syndrome; /* For correcting ECC errors. */
 190         unsigned long   elfmc_fill_addr;/* Cache block which was being read. */
 191         unsigned long   elfmc_va;       /* Effective VA of fault or miss. */
 192         unsigned long   elfmc_bc_tag;   /* Backup Cache Tag Probe Results. */
 193 };
 194
 195 /*
 196  * Sable processor specific Machine Check Data segment.
 197  */
 198
 199 struct el_t2_logout_header {
 200         unsigned int    elfl_size;      /* size in bytes of logout area. */
 201         unsigned int    elfl_sbz1:31;   /* Should be zero. */
 202         unsigned int    elfl_retry:1;   /* Retry flag. */
 203         unsigned int    elfl_procoffset; /* Processor-specific offset. */
 204         unsigned int    elfl_sysoffset;  /* Offset of system-specific. */
 205         unsigned int    elfl_error_type;        /* PAL error type code. */
 206         unsigned int    elfl_frame_rev;         /* PAL Frame revision. */
 207 };
 208 struct el_t2_sysdata_mcheck {
 209         unsigned long    elcmc_bcc;           /* CSR 0 */
 210         unsigned long    elcmc_bcce;          /* CSR 1 */
 211         unsigned long    elcmc_bccea;      /* CSR 2 */
 212         unsigned long    elcmc_bcue;          /* CSR 3 */
 213         unsigned long    elcmc_bcuea;      /* CSR 4 */
 214         unsigned long    elcmc_dter;          /* CSR 5 */
 215         unsigned long    elcmc_cbctl;      /* CSR 6 */
 216         unsigned long    elcmc_cbe;           /* CSR 7 */
 217         unsigned long    elcmc_cbeal;      /* CSR 8 */
 218         unsigned long    elcmc_cbeah;      /* CSR 9 */
 219         unsigned long    elcmc_pmbx;          /* CSR 10 */
 220         unsigned long    elcmc_ipir;          /* CSR 11 */
 221         unsigned long    elcmc_sic;           /* CSR 12 */
 222         unsigned long    elcmc_adlk;          /* CSR 13 */
 223         unsigned long    elcmc_madrl;      /* CSR 14 */
 224         unsigned long    elcmc_crrev4;     /* CSR 15 */
 225 };
 226
 227 /*
 228  * Sable memory error frame - sable pfms section 3.42
 229  */
 230 struct el_t2_data_memory {
 231         struct  el_t2_frame_header elcm_hdr;    /* ID$MEM-FERR = 0x08 */
 232         unsigned int  elcm_module;      /* Module id. */
 233         unsigned int  elcm_res04;       /* Reserved. */
 234         unsigned long elcm_merr;        /* CSR0: Error Reg 1. */
 235         unsigned long elcm_mcmd1;       /* CSR1: Command Trap 1. */
 236         unsigned long elcm_mcmd2;       /* CSR2: Command Trap 2. */
 237         unsigned long elcm_mconf;       /* CSR3: Configuration. */
 238         unsigned long elcm_medc1;       /* CSR4: EDC Status 1. */
 239         unsigned long elcm_medc2;       /* CSR5: EDC Status 2. */
 240         unsigned long elcm_medcc;       /* CSR6: EDC Control. */
 241         unsigned long elcm_msctl;       /* CSR7: Stream Buffer Control. */
 242         unsigned long elcm_mref;        /* CSR8: Refresh Control. */
 243         unsigned long elcm_filter;      /* CSR9: CRD Filter Control. */
 244 };
 245
 246
 247 /*
 248  * Sable other CPU error frame - sable pfms section 3.43
 249  */
 250 struct el_t2_data_other_cpu {
 251         short         elco_cpuid;       /* CPU ID */
 252         short         elco_res02[3];
 253         unsigned long elco_bcc; /* CSR 0 */
 254         unsigned long elco_bcce;        /* CSR 1 */
 255         unsigned long elco_bccea;       /* CSR 2 */
 256         unsigned long elco_bcue;        /* CSR 3 */
 257         unsigned long elco_bcuea;       /* CSR 4 */
 258         unsigned long elco_dter;        /* CSR 5 */
 259         unsigned long elco_cbctl;       /* CSR 6 */
 260         unsigned long elco_cbe; /* CSR 7 */
 261         unsigned long elco_cbeal;       /* CSR 8 */
 262         unsigned long elco_cbeah;       /* CSR 9 */
 263         unsigned long elco_pmbx;        /* CSR 10 */
 264         unsigned long elco_ipir;        /* CSR 11 */
 265         unsigned long elco_sic; /* CSR 12 */
 266         unsigned long elco_adlk;        /* CSR 13 */
 267         unsigned long elco_madrl;       /* CSR 14 */
 268         unsigned long elco_crrev4;      /* CSR 15 */
 269 };
 270
 271 /*
 272  * Sable other CPU error frame - sable pfms section 3.44
 273  */
 274 struct el_t2_data_t2{
 275         struct el_t2_frame_header elct_hdr;     /* ID$T2-FRAME */
 276         unsigned long elct_iocsr;       /* IO Control and Status Register */
 277         unsigned long elct_cerr1;       /* Cbus Error Register 1 */
 278         unsigned long elct_cerr2;       /* Cbus Error Register 2 */
 279         unsigned long elct_cerr3;       /* Cbus Error Register 3 */
 280         unsigned long elct_perr1;       /* PCI Error Register 1 */
 281         unsigned long elct_perr2;       /* PCI Error Register 2 */
 282         unsigned long elct_hae0_1;      /* High Address Extension Register 1 */
 283         unsigned long elct_hae0_2;      /* High Address Extension Register 2 */
 284         unsigned long elct_hbase;       /* High Base Register */
 285         unsigned long elct_wbase1;      /* Window Base Register 1 */
 286         unsigned long elct_wmask1;      /* Window Mask Register 1 */
 287         unsigned long elct_tbase1;      /* Translated Base Register 1 */
 288         unsigned long elct_wbase2;      /* Window Base Register 2 */
 289         unsigned long elct_wmask2;      /* Window Mask Register 2 */
 290         unsigned long elct_tbase2;      /* Translated Base Register 2 */
 291         unsigned long elct_tdr0;        /* TLB Data Register 0 */
 292         unsigned long elct_tdr1;        /* TLB Data Register 1 */
 293         unsigned long elct_tdr2;        /* TLB Data Register 2 */
 294         unsigned long elct_tdr3;        /* TLB Data Register 3 */
 295         unsigned long elct_tdr4;        /* TLB Data Register 4 */
 296         unsigned long elct_tdr5;        /* TLB Data Register 5 */
 297         unsigned long elct_tdr6;        /* TLB Data Register 6 */
 298         unsigned long elct_tdr7;        /* TLB Data Register 7 */
 299 };
 300
 301 /*
 302  * Sable error log data structure - sable pfms section 3.40
 303  */
 304 struct el_t2_data_corrected {
 305         unsigned long elcpb_biu_stat;
 306         unsigned long elcpb_biu_addr;
 307         unsigned long elcpb_biu_ctl;
 308         unsigned long elcpb_fill_syndrome;
 309         unsigned long elcpb_fill_addr;
 310         unsigned long elcpb_bc_tag;
 311 };
 312
 313 /*
 314  * Sable error log data structure
 315  * Note there are 4 memory slots on sable (see t2.h)
 316  */
 317 struct el_t2_frame_mcheck {
 318         struct el_t2_frame_header elfmc_header; /* ID$P-FRAME_MCHECK */
 319         struct el_t2_logout_header elfmc_hdr;
 320         struct el_t2_procdata_mcheck elfmc_procdata;
 321         struct el_t2_sysdata_mcheck elfmc_sysdata;
 322         struct el_t2_data_t2 elfmc_t2data;
 323         struct el_t2_data_memory elfmc_memdata[4];
 324         struct el_t2_frame_header elfmc_footer; /* empty */
 325 };
 326
 327
 328 /*
 329  * Sable error log data structures on memory errors
 330  */
 331 struct el_t2_frame_corrected {
 332         struct el_t2_frame_header elfcc_header; /* ID$P-BC-COR */
 333         struct el_t2_logout_header elfcc_hdr;
 334         struct el_t2_data_corrected elfcc_procdata;
 335 /*      struct el_t2_data_t2 elfcc_t2data;              */
 336 /*      struct el_t2_data_memory elfcc_memdata[4];      */
 337         struct el_t2_frame_header elfcc_footer; /* empty */
 338 };
 339
 340
 341 #ifdef __KERNEL__
 342
 343 #ifndef __EXTERN_INLINE
 344 #define __EXTERN_INLINE extern inline
 345 #define __IO_EXTERN_INLINE
 346 #endif
 347
 348 /*
 349  * I/O functions:
 350  *
 351  * T2 (the core logic PCI/memory support chipset for the SABLE
 352  * series of processors uses a sparse address mapping scheme to
 353  * get at PCI memory and I/O.
 354  */
 355
 356 #define vip     volatile int *
 357 #define vuip    volatile unsigned int *
 358
 359 extern inline u8 t2_inb(unsigned long addr)
 360 {
 361         long result = *(vip) ((addr << 5) + T2_IO + 0x00);
 362         return __kernel_extbl(result, addr & 3);
 363 }
 364
 365 extern inline void t2_outb(u8 b, unsigned long addr)
 366 {
 367         unsigned long w;
 368
 369         w = __kernel_insbl(b, addr & 3);
 370         *(vuip) ((addr << 5) + T2_IO + 0x00) = w;
 371         mb();
 372 }
 373
 374 extern inline u16 t2_inw(unsigned long addr)
 375 {
 376         long result = *(vip) ((addr << 5) + T2_IO + 0x08);
 377         return __kernel_extwl(result, addr & 3);
 378 }
 379
 380 extern inline void t2_outw(u16 b, unsigned long addr)
 381 {
 382         unsigned long w;
 383
 384         w = __kernel_inswl(b, addr & 3);
 385         *(vuip) ((addr << 5) + T2_IO + 0x08) = w;
 386         mb();
 387 }
 388
 389 extern inline u32 t2_inl(unsigned long addr)
 390 {
 391         return *(vuip) ((addr << 5) + T2_IO + 0x18);
 392 }
 393
 394 extern inline void t2_outl(u32 b, unsigned long addr)
 395 {
 396         *(vuip) ((addr << 5) + T2_IO + 0x18) = b;
 397         mb();
 398 }
 399
 400
 401 /*
 402  * Memory functions.
 403  *
 404  * For reading and writing 8 and 16 bit quantities we need to
 405  * go through one of the three sparse address mapping regions
 406  * and use the HAE_MEM CSR to provide some bits of the address.
 407  * The following few routines use only sparse address region 1
 408  * which gives 1Gbyte of accessible space which relates exactly
 409  * to the amount of PCI memory mapping *into* system address space.
 410  * See p 6-17 of the specification but it looks something like this:
 411  *
 412  * 21164 Address:
 413  *
 414  *          3         2         1
 415  * 9876543210987654321098765432109876543210
 416  * 1ZZZZ0.PCI.QW.Address............BBLL
 417  *
 418  * ZZ = SBZ
 419  * BB = Byte offset
 420  * LL = Transfer length
 421  *
 422  * PCI Address:
 423  *
 424  * 3         2         1
 425  * 10987654321098765432109876543210
 426  * HHH....PCI.QW.Address........ 00
 427  *
 428  * HHH = 31:29 HAE_MEM CSR
 429  *
 430  */
 431
 432 #define t2_set_hae { \
 433         msb = addr  >> 27; \
 434         addr &= T2_MEM_R1_MASK; \
 435         set_hae(msb); \
 436 }
 437
 438 extern spinlock_t t2_hae_lock;
 439
 440 /*
 441  * NOTE: take T2_DENSE_MEM off in each readX/writeX routine, since
 442  *       they may be called directly, rather than through the
 443  *       ioreadNN/iowriteNN routines.
 444  */
 445
 446 __EXTERN_INLINE u8 t2_readb(const volatile void __iomem *xaddr)
 447 {
 448         unsigned long addr = (unsigned long) xaddr - T2_DENSE_MEM;
 449         unsigned long result, msb;
 450         unsigned long flags;
 451         spin_lock_irqsave(&t2_hae_lock, flags);
 452
 453         t2_set_hae;
 454
 455         result = *(vip) ((addr << 5) + T2_SPARSE_MEM + 0x00);
 456         spin_unlock_irqrestore(&t2_hae_lock, flags);
 457         return __kernel_extbl(result, addr & 3);
 458 }
 459
 460 __EXTERN_INLINE u16 t2_readw(const volatile void __iomem *xaddr)
 461 {
 462         unsigned long addr = (unsigned long) xaddr - T2_DENSE_MEM;
 463         unsigned long result, msb;
 464         unsigned long flags;
 465         spin_lock_irqsave(&t2_hae_lock, flags);
 466
 467         t2_set_hae;
 468
 469         result = *(vuip) ((addr << 5) + T2_SPARSE_MEM + 0x08);
 470         spin_unlock_irqrestore(&t2_hae_lock, flags);
 471         return __kernel_extwl(result, addr & 3);
 472 }
 473
 474 /*
 475  * On SABLE with T2, we must use SPARSE memory even for 32-bit access,
 476  * because we cannot access all of DENSE without changing its HAE.
 477  */
 478 __EXTERN_INLINE u32 t2_readl(const volatile void __iomem *xaddr)
 479 {
 480         unsigned long addr = (unsigned long) xaddr - T2_DENSE_MEM;
 481         unsigned long result, msb;
 482         unsigned long flags;
 483         spin_lock_irqsave(&t2_hae_lock, flags);
 484
 485         t2_set_hae;
 486
 487         result = *(vuip) ((addr << 5) + T2_SPARSE_MEM + 0x18);
 488         spin_unlock_irqrestore(&t2_hae_lock, flags);
 489         return result & 0xffffffffUL;
 490 }
 491
 492 __EXTERN_INLINE u64 t2_readq(const volatile void __iomem *xaddr)
 493 {
 494         unsigned long addr = (unsigned long) xaddr - T2_DENSE_MEM;
 495         unsigned long r0, r1, work, msb;
 496         unsigned long flags;
 497         spin_lock_irqsave(&t2_hae_lock, flags);
 498
 499         t2_set_hae;
 500
 501         work = (addr << 5) + T2_SPARSE_MEM + 0x18;
 502         r0 = *(vuip)(work);
 503         r1 = *(vuip)(work + (4 << 5));
 504         spin_unlock_irqrestore(&t2_hae_lock, flags);
 505         return r1 << 32 | r0;
 506 }
 507
 508 __EXTERN_INLINE void t2_writeb(u8 b, volatile void __iomem *xaddr)
 509 {
 510         unsigned long addr = (unsigned long) xaddr - T2_DENSE_MEM;
 511         unsigned long msb, w;
 512         unsigned long flags;
 513         spin_lock_irqsave(&t2_hae_lock, flags);
 514
 515         t2_set_hae;
 516
 517         w = __kernel_insbl(b, addr & 3);
 518         *(vuip) ((addr << 5) + T2_SPARSE_MEM + 0x00) = w;
 519         spin_unlock_irqrestore(&t2_hae_lock, flags);
 520 }
 521
 522 __EXTERN_INLINE void t2_writew(u16 b, volatile void __iomem *xaddr)
 523 {
 524         unsigned long addr = (unsigned long) xaddr - T2_DENSE_MEM;
 525         unsigned long msb, w;
 526         unsigned long flags;
 527         spin_lock_irqsave(&t2_hae_lock, flags);
 528
 529         t2_set_hae;
 530
 531         w = __kernel_inswl(b, addr & 3);
 532         *(vuip) ((addr << 5) + T2_SPARSE_MEM + 0x08) = w;
 533         spin_unlock_irqrestore(&t2_hae_lock, flags);
 534 }
 535
 536 /*
 537  * On SABLE with T2, we must use SPARSE memory even for 32-bit access,
 538  * because we cannot access all of DENSE without changing its HAE.
 539  */
 540 __EXTERN_INLINE void t2_writel(u32 b, volatile void __iomem *xaddr)
 541 {
 542         unsigned long addr = (unsigned long) xaddr - T2_DENSE_MEM;
 543         unsigned long msb;
 544         unsigned long flags;
 545         spin_lock_irqsave(&t2_hae_lock, flags);
 546
 547         t2_set_hae;
 548
 549         *(vuip) ((addr << 5) + T2_SPARSE_MEM + 0x18) = b;
 550         spin_unlock_irqrestore(&t2_hae_lock, flags);
 551 }
 552
 553 __EXTERN_INLINE void t2_writeq(u64 b, volatile void __iomem *xaddr)
 554 {
 555         unsigned long addr = (unsigned long) xaddr - T2_DENSE_MEM;
 556         unsigned long msb, work;
 557         unsigned long flags;
 558         spin_lock_irqsave(&t2_hae_lock, flags);
 559
 560         t2_set_hae;
 561
 562         work = (addr << 5) + T2_SPARSE_MEM + 0x18;
 563         *(vuip)work = b;
 564         *(vuip)(work + (4 << 5)) = b >> 32;
 565         spin_unlock_irqrestore(&t2_hae_lock, flags);
 566 }
 567
 568 __EXTERN_INLINE void __iomem *t2_ioportmap(unsigned long addr)
 569 {
 570         return (void __iomem *)(addr + T2_IO);
 571 }
 572
 573 __EXTERN_INLINE void __iomem *t2_ioremap(unsigned long addr,
 574                                          unsigned long size)
 575 {
 576         return (void __iomem *)(addr + T2_DENSE_MEM);
 577 }
 578
 579 __EXTERN_INLINE int t2_is_ioaddr(unsigned long addr)
 580 {
 581         return (long)addr >= 0;
 582 }
 583
 584 __EXTERN_INLINE int t2_is_mmio(const volatile void __iomem *addr)
 585 {
 586         return (unsigned long)addr >= T2_DENSE_MEM;
 587 }
 588
 589 /* New-style ioread interface.  The mmio routines are so ugly for T2 that
 590    it doesn't make sense to merge the pio and mmio routines.  */
 591
 592 #define IOPORT(OS, NS)                                                  \
 593 __EXTERN_INLINE unsigned int t2_ioread##NS(void __iomem *xaddr)         \
 594 {                                                                       \
 595         if (t2_is_mmio(xaddr))                                          \
 596                 return t2_read##OS(xaddr);                              \
 597         else                                                            \
 598                 return t2_in##OS((unsigned long)xaddr - T2_IO);         \
 599 }                                                                       \
 600 __EXTERN_INLINE void t2_iowrite##NS(u##NS b, void __iomem *xaddr)       \
 601 {                                                                       \
 602         if (t2_is_mmio(xaddr))                                          \
 603                 t2_write##OS(b, xaddr);                                 \
 604         else                                                            \
 605                 t2_out##OS(b, (unsigned long)xaddr - T2_IO);            \
 606 }
 607
 608 IOPORT(b, 8)
 609 IOPORT(w, 16)
 610 IOPORT(l, 32)
 611
 612 #undef IOPORT
 613
 614 #undef vip
 615 #undef vuip
 616
 617 #undef __IO_PREFIX
 618 #define __IO_PREFIX             t2
 619 #define t2_trivial_rw_bw        0
 620 #define t2_trivial_rw_lq        0
 621 #define t2_trivial_io_bw        0
 622 #define t2_trivial_io_lq        0
 623 #define t2_trivial_iounmap      1
 624 #include <asm/io_trivial.h>
 625
 626 #ifdef __IO_EXTERN_INLINE
 627 #undef __EXTERN_INLINE
 628 #undef __IO_EXTERN_INLINE
 629 #endif
 630
 631 #endif /* __KERNEL__ */
 632
 633 #endif /* __ALPHA_T2__H__ */