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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 | #ifndef __ALPHA_SYSTEM_H #define __ALPHA_SYSTEM_H #include <linux/config.h> #include <asm/pal.h> #include <asm/page.h> /* * System defines.. Note that this is included both from .c and .S * files, so it does only defines, not any C code. */ /* * We leave one page for the initial stack page, and one page for * the initial process structure. Also, the console eats 3 MB for * the initial bootloader (one of which we can reclaim later). * With a few other pages for various reasons, we'll use an initial * load address of PAGE_OFFSET+0x310000UL */ #define BOOT_PCB 0x20000000 #define BOOT_ADDR 0x20000000 /* Remove when official MILO sources have ELF support: */ #define BOOT_SIZE (16*1024) #define KERNEL_START (PAGE_OFFSET+0x300000) #define SWAPPER_PGD (PAGE_OFFSET+0x300000) #define INIT_STACK (PAGE_OFFSET+0x302000) #define EMPTY_PGT (PAGE_OFFSET+0x304000) #define EMPTY_PGE (PAGE_OFFSET+0x308000) #define ZERO_PGE (PAGE_OFFSET+0x30A000) #define START_ADDR (PAGE_OFFSET+0x310000) #ifndef __ASSEMBLY__ /* * This is the logout header that should be common to all platforms * (assuming they are running OSF/1 PALcode, I guess). */ struct el_common { unsigned int size; /* size in bytes of logout area */ int sbz1 : 30; /* should be zero */ int err2 : 1; /* second error */ int retry : 1; /* retry flag */ unsigned int proc_offset; /* processor-specific offset */ unsigned int sys_offset; /* system-specific offset */ unsigned long code; /* machine check code */ }; /* Machine Check Frame for uncorrectable errors (Large format) * --- This is used to log uncorrectable errors such as * double bit ECC errors. * --- These errors are detected by both processor and systems. */ struct el_common_EV5_uncorrectable_mcheck { unsigned long shadow[8]; /* Shadow reg. 8-14, 25 */ unsigned long paltemp[24]; /* PAL TEMP REGS. */ unsigned long exc_addr; /* Address of excepting instruction*/ unsigned long exc_sum; /* Summary of arithmetic traps. */ unsigned long exc_mask; /* Exception mask (from exc_sum). */ unsigned long pal_base; /* Base address for PALcode. */ unsigned long isr; /* Interrupt Status Reg. */ unsigned long icsr; /* CURRENT SETUP OF EV5 IBOX */ unsigned long ic_perr_stat; /* I-CACHE Reg. <11> set Data parity <12> set TAG parity*/ unsigned long dc_perr_stat; /* D-CACHE error Reg. Bits set to 1: <2> Data error in bank 0 <3> Data error in bank 1 <4> Tag error in bank 0 <5> Tag error in bank 1 */ unsigned long va; /* Effective VA of fault or miss. */ unsigned long mm_stat; /* Holds the reason for D-stream fault or D-cache parity errors */ unsigned long sc_addr; /* Address that was being accessed when EV5 detected Secondary cache failure. */ unsigned long sc_stat; /* Helps determine if the error was TAG/Data parity(Secondary Cache)*/ unsigned long bc_tag_addr; /* Contents of EV5 BC_TAG_ADDR */ unsigned long ei_addr; /* Physical address of any transfer that is logged in EV5 EI_STAT */ unsigned long fill_syndrome; /* For correcting ECC errors. */ unsigned long ei_stat; /* Helps identify reason of any processor uncorrectable error at its external interface. */ unsigned long ld_lock; /* Contents of EV5 LD_LOCK register*/ }; struct el_common_EV6_mcheck { unsigned int FrameSize; /* Bytes, including this field */ unsigned int FrameFlags; /* <31> = Retry, <30> = Second Error */ unsigned int CpuOffset; /* Offset to CPU-specific info */ unsigned int SystemOffset; /* Offset to system-specific info */ unsigned int MCHK_Code; unsigned int MCHK_Frame_Rev; unsigned long I_STAT; /* EV6 Internal Processor Registers */ unsigned long DC_STAT; /* (See the 21264 Spec) */ unsigned long C_ADDR; unsigned long DC1_SYNDROME; unsigned long DC0_SYNDROME; unsigned long C_STAT; unsigned long C_STS; unsigned long RESERVED0; unsigned long EXC_ADDR; unsigned long IER_CM; unsigned long ISUM; unsigned long MM_STAT; unsigned long PAL_BASE; unsigned long I_CTL; unsigned long PCTX; }; extern void halt(void) __attribute__((noreturn)); #define prepare_to_switch() do { } while(0) #define switch_to(prev,next,last) \ do { \ unsigned long pcbb; \ current = (next); \ pcbb = virt_to_phys(¤t->thread); \ (last) = alpha_switch_to(pcbb, (prev)); \ } while (0) extern struct task_struct* alpha_switch_to(unsigned long, struct task_struct*); #define mb() \ __asm__ __volatile__("mb": : :"memory") #define rmb() \ __asm__ __volatile__("mb": : :"memory") #define wmb() \ __asm__ __volatile__("wmb": : :"memory") #define set_mb(var, value) \ do { var = value; mb(); } while (0) #define set_rmb(var, value) \ do { var = value; rmb(); } while (0) #define set_wmb(var, value) \ do { var = value; wmb(); } while (0) #define imb() \ __asm__ __volatile__ ("call_pal %0 #imb" : : "i" (PAL_imb) : "memory") #define draina() \ __asm__ __volatile__ ("call_pal %0 #draina" : : "i" (PAL_draina) : "memory") enum implver_enum { IMPLVER_EV4, IMPLVER_EV5, IMPLVER_EV6 }; #ifdef CONFIG_ALPHA_GENERIC #define implver() \ ({ unsigned long __implver; \ __asm__ ("implver %0" : "=r"(__implver)); \ (enum implver_enum) __implver; }) #else /* Try to eliminate some dead code. */ #ifdef CONFIG_ALPHA_EV4 #define implver() IMPLVER_EV4 #endif #ifdef CONFIG_ALPHA_EV5 #define implver() IMPLVER_EV5 #endif #ifdef CONFIG_ALPHA_EV6 #define implver() IMPLVER_EV6 #endif #endif enum amask_enum { AMASK_BWX = (1UL << 0), AMASK_FIX = (1UL << 1), AMASK_MAX = (1UL << 8), AMASK_PRECISE_TRAP = (1UL << 9), }; #define amask(mask) \ ({ unsigned long __amask, __input = (mask); \ __asm__ ("amask %1,%0" : "=r"(__amask) : "rI"(__input)); \ __amask; }) #define __CALL_PAL_R0(NAME, TYPE) \ static inline TYPE NAME(void) \ { \ register TYPE __r0 __asm__("$0"); \ __asm__ __volatile__( \ "call_pal %1 # " #NAME \ :"=r" (__r0) \ :"i" (PAL_ ## NAME) \ :"$1", "$16", "$22", "$23", "$24", "$25"); \ return __r0; \ } #define __CALL_PAL_W1(NAME, TYPE0) \ static inline void NAME(TYPE0 arg0) \ { \ register TYPE0 __r16 __asm__("$16") = arg0; \ __asm__ __volatile__( \ "call_pal %1 # "#NAME \ : "=r"(__r16) \ : "i"(PAL_ ## NAME), "0"(__r16) \ : "$1", "$22", "$23", "$24", "$25"); \ } #define __CALL_PAL_W2(NAME, TYPE0, TYPE1) \ static inline void NAME(TYPE0 arg0, TYPE1 arg1) \ { \ register TYPE0 __r16 __asm__("$16") = arg0; \ register TYPE1 __r17 __asm__("$17") = arg1; \ __asm__ __volatile__( \ "call_pal %2 # "#NAME \ : "=r"(__r16), "=r"(__r17) \ : "i"(PAL_ ## NAME), "0"(__r16), "1"(__r17) \ : "$1", "$22", "$23", "$24", "$25"); \ } #define __CALL_PAL_RW1(NAME, RTYPE, TYPE0) \ static inline RTYPE NAME(TYPE0 arg0) \ { \ register RTYPE __r0 __asm__("$0"); \ register TYPE0 __r16 __asm__("$16") = arg0; \ __asm__ __volatile__( \ "call_pal %2 # "#NAME \ : "=r"(__r16), "=r"(__r0) \ : "i"(PAL_ ## NAME), "0"(__r16) \ : "$1", "$22", "$23", "$24", "$25"); \ return __r0; \ } #define __CALL_PAL_RW2(NAME, RTYPE, TYPE0, TYPE1) \ static inline RTYPE NAME(TYPE0 arg0, TYPE1 arg1) \ { \ register RTYPE __r0 __asm__("$0"); \ register TYPE0 __r16 __asm__("$16") = arg0; \ register TYPE1 __r17 __asm__("$17") = arg1; \ __asm__ __volatile__( \ "call_pal %3 # "#NAME \ : "=r"(__r16), "=r"(__r17), "=r"(__r0) \ : "i"(PAL_ ## NAME), "0"(__r16), "1"(__r17) \ : "$1", "$22", "$23", "$24", "$25"); \ return __r0; \ } __CALL_PAL_W1(cflush, unsigned long); __CALL_PAL_R0(rdmces, unsigned long); __CALL_PAL_R0(rdps, unsigned long); __CALL_PAL_R0(rdusp, unsigned long); __CALL_PAL_RW1(swpipl, unsigned long, unsigned long); __CALL_PAL_R0(whami, unsigned long); __CALL_PAL_W2(wrent, void*, unsigned long); __CALL_PAL_W1(wripir, unsigned long); __CALL_PAL_W1(wrkgp, unsigned long); __CALL_PAL_W1(wrmces, unsigned long); __CALL_PAL_RW2(wrperfmon, unsigned long, unsigned long, unsigned long); __CALL_PAL_W1(wrusp, unsigned long); __CALL_PAL_W1(wrvptptr, unsigned long); #define __cli() ((void) swpipl(7)) #define __sti() ((void) swpipl(0)) #define __save_flags(flags) ((flags) = rdps()) #define __save_and_cli(flags) ((flags) = swpipl(7)) #define __restore_flags(flags) ((void) swpipl(flags)) #define local_irq_save(flags) __save_and_cli(flags) #define local_irq_restore(flags) __restore_flags(flags) #define local_irq_disable() __cli() #define local_irq_enable() __sti() #ifdef __SMP__ extern int global_irq_holder; #define save_and_cli(flags) (save_flags(flags), cli()) extern void __global_cli(void); extern void __global_sti(void); extern unsigned long __global_save_flags(void); extern void __global_restore_flags(unsigned long flags); #define cli() __global_cli() #define sti() __global_sti() #define save_flags(flags) ((flags) = __global_save_flags()) #define restore_flags(flags) __global_restore_flags(flags) #else /* __SMP__ */ #define cli() __cli() #define sti() __sti() #define save_flags(flags) __save_flags(flags) #define save_and_cli(flags) __save_and_cli(flags) #define restore_flags(flags) __restore_flags(flags) #endif /* __SMP__ */ /* * TB routines.. */ #define __tbi(nr,arg,arg1...) \ ({ \ register unsigned long __r16 __asm__("$16") = (nr); \ register unsigned long __r17 __asm__("$17"); arg; \ __asm__ __volatile__( \ "call_pal %3 #__tbi" \ :"=r" (__r16),"=r" (__r17) \ :"0" (__r16),"i" (PAL_tbi) ,##arg1 \ :"$0", "$1", "$22", "$23", "$24", "$25"); \ }) #define tbi(x,y) __tbi(x,__r17=(y),"1" (__r17)) #define tbisi(x) __tbi(1,__r17=(x),"1" (__r17)) #define tbisd(x) __tbi(2,__r17=(x),"1" (__r17)) #define tbis(x) __tbi(3,__r17=(x),"1" (__r17)) #define tbiap() __tbi(-1, /* no second argument */) #define tbia() __tbi(-2, /* no second argument */) /* * Atomic exchange. */ extern __inline__ unsigned long __xchg_u32(volatile int *m, unsigned long val) { unsigned long dummy; __asm__ __volatile__( "1: ldl_l %0,%2\n" " bis $31,%3,%1\n" " stl_c %1,%2\n" " beq %1,2f\n" " mb\n" ".section .text2,\"ax\"\n" "2: br 1b\n" ".previous" : "=&r" (val), "=&r" (dummy), "=m" (*m) : "rI" (val), "m" (*m)); return val; } extern __inline__ unsigned long __xchg_u64(volatile long *m, unsigned long val) { unsigned long dummy; __asm__ __volatile__( "1: ldq_l %0,%2\n" " bis $31,%3,%1\n" " stq_c %1,%2\n" " beq %1,2f\n" " mb\n" ".section .text2,\"ax\"\n" "2: br 1b\n" ".previous" : "=&r" (val), "=&r" (dummy), "=m" (*m) : "rI" (val), "m" (*m)); return val; } /* This function doesn't exist, so you'll get a linker error if something tries to do an invalid xchg(). */ extern void __xchg_called_with_bad_pointer(void); static __inline__ unsigned long __xchg(volatile void *ptr, unsigned long x, int size) { switch (size) { case 4: return __xchg_u32(ptr, x); case 8: return __xchg_u64(ptr, x); } __xchg_called_with_bad_pointer(); return x; } #define xchg(ptr,x) \ ({ \ __typeof__(*(ptr)) _x_ = (x); \ (__typeof__(*(ptr))) __xchg((ptr), (unsigned long)_x_, sizeof(*(ptr))); \ }) #define tas(ptr) (xchg((ptr),1)) /* * Atomic compare and exchange. Compare OLD with MEM, if identical, * store NEW in MEM. Return the initial value in MEM. Success is * indicated by comparing RETURN with OLD. */ #define __HAVE_ARCH_CMPXCHG 1 extern __inline__ unsigned long __cmpxchg_u32(volatile int *m, int old, int new) { unsigned long prev, cmp; __asm__ __volatile__( "1: ldl_l %0,%2\n" " cmpeq %0,%3,%1\n" " beq %1,2f\n" " mov %4,%1\n" " stl_c %1,%2\n" " beq %1,3f\n" "2: mb\n" ".section .text2,\"ax\"\n" "3: br 1b\n" ".previous" : "=&r"(prev), "=&r"(cmp), "=m"(*m) : "r"((long) old), "r"(new), "m"(*m)); return prev; } extern __inline__ unsigned long __cmpxchg_u64(volatile long *m, unsigned long old, unsigned long new) { unsigned long prev, cmp; __asm__ __volatile__( "1: ldq_l %0,%2\n" " cmpeq %0,%3,%1\n" " beq %1,2f\n" " mov %4,%1\n" " stq_c %1,%2\n" " beq %1,3f\n" "2: mb\n" ".section .text2,\"ax\"\n" "3: br 1b\n" ".previous" : "=&r"(prev), "=&r"(cmp), "=m"(*m) : "r"((long) old), "r"(new), "m"(*m)); return prev; } /* This function doesn't exist, so you'll get a linker error if something tries to do an invalid cmpxchg(). */ extern void __cmpxchg_called_with_bad_pointer(void); static __inline__ unsigned long __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, int size) { switch (size) { case 4: return __cmpxchg_u32(ptr, old, new); case 8: return __cmpxchg_u64(ptr, old, new); } __cmpxchg_called_with_bad_pointer(); return old; } #define cmpxchg(ptr,o,n) \ ({ \ __typeof__(*(ptr)) _o_ = (o); \ __typeof__(*(ptr)) _n_ = (n); \ (__typeof__(*(ptr))) __cmpxchg((ptr), (unsigned long)_o_, \ (unsigned long)_n_, sizeof(*(ptr))); \ }) #endif /* __ASSEMBLY__ */ #endif |