Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * include/asm-s390/system.h |
| 3 | * |
| 4 | * S390 version |
| 5 | * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation |
| 6 | * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com), |
| 7 | * |
| 8 | * Derived from "include/asm-i386/system.h" |
| 9 | */ |
| 10 | |
| 11 | #ifndef __ASM_SYSTEM_H |
| 12 | #define __ASM_SYSTEM_H |
| 13 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | #include <linux/kernel.h> |
| 15 | #include <asm/types.h> |
| 16 | #include <asm/ptrace.h> |
| 17 | #include <asm/setup.h> |
Heiko Carstens | 77fa224 | 2005-06-25 14:55:30 -0700 | [diff] [blame] | 18 | #include <asm/processor.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | |
| 20 | #ifdef __KERNEL__ |
| 21 | |
| 22 | struct task_struct; |
| 23 | |
| 24 | extern struct task_struct *__switch_to(void *, void *); |
| 25 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | static inline void save_fp_regs(s390_fp_regs *fpregs) |
| 27 | { |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 28 | asm volatile( |
| 29 | " std 0,8(%1)\n" |
| 30 | " std 2,24(%1)\n" |
| 31 | " std 4,40(%1)\n" |
| 32 | " std 6,56(%1)" |
| 33 | : "=m" (*fpregs) : "a" (fpregs), "m" (*fpregs) : "memory"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | if (!MACHINE_HAS_IEEE) |
| 35 | return; |
| 36 | asm volatile( |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 37 | " stfpc 0(%1)\n" |
| 38 | " std 1,16(%1)\n" |
| 39 | " std 3,32(%1)\n" |
| 40 | " std 5,48(%1)\n" |
| 41 | " std 7,64(%1)\n" |
| 42 | " std 8,72(%1)\n" |
| 43 | " std 9,80(%1)\n" |
| 44 | " std 10,88(%1)\n" |
| 45 | " std 11,96(%1)\n" |
| 46 | " std 12,104(%1)\n" |
| 47 | " std 13,112(%1)\n" |
| 48 | " std 14,120(%1)\n" |
| 49 | " std 15,128(%1)\n" |
| 50 | : "=m" (*fpregs) : "a" (fpregs), "m" (*fpregs) : "memory"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | } |
| 52 | |
| 53 | static inline void restore_fp_regs(s390_fp_regs *fpregs) |
| 54 | { |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 55 | asm volatile( |
| 56 | " ld 0,8(%0)\n" |
| 57 | " ld 2,24(%0)\n" |
| 58 | " ld 4,40(%0)\n" |
| 59 | " ld 6,56(%0)" |
| 60 | : : "a" (fpregs), "m" (*fpregs)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | if (!MACHINE_HAS_IEEE) |
| 62 | return; |
| 63 | asm volatile( |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 64 | " lfpc 0(%0)\n" |
| 65 | " ld 1,16(%0)\n" |
| 66 | " ld 3,32(%0)\n" |
| 67 | " ld 5,48(%0)\n" |
| 68 | " ld 7,64(%0)\n" |
| 69 | " ld 8,72(%0)\n" |
| 70 | " ld 9,80(%0)\n" |
| 71 | " ld 10,88(%0)\n" |
| 72 | " ld 11,96(%0)\n" |
| 73 | " ld 12,104(%0)\n" |
| 74 | " ld 13,112(%0)\n" |
| 75 | " ld 14,120(%0)\n" |
| 76 | " ld 15,128(%0)\n" |
| 77 | : : "a" (fpregs), "m" (*fpregs)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | } |
| 79 | |
| 80 | static inline void save_access_regs(unsigned int *acrs) |
| 81 | { |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 82 | asm volatile("stam 0,15,0(%0)" : : "a" (acrs) : "memory"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | } |
| 84 | |
| 85 | static inline void restore_access_regs(unsigned int *acrs) |
| 86 | { |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 87 | asm volatile("lam 0,15,0(%0)" : : "a" (acrs)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | } |
| 89 | |
| 90 | #define switch_to(prev,next,last) do { \ |
| 91 | if (prev == next) \ |
| 92 | break; \ |
| 93 | save_fp_regs(&prev->thread.fp_regs); \ |
| 94 | restore_fp_regs(&next->thread.fp_regs); \ |
| 95 | save_access_regs(&prev->thread.acrs[0]); \ |
| 96 | restore_access_regs(&next->thread.acrs[0]); \ |
| 97 | prev = __switch_to(prev,next); \ |
| 98 | } while (0) |
| 99 | |
Ingo Molnar | 4dc7a0b | 2006-01-12 01:05:27 -0800 | [diff] [blame] | 100 | /* |
| 101 | * On SMP systems, when the scheduler does migration-cost autodetection, |
| 102 | * it needs a way to flush as much of the CPU's caches as possible. |
| 103 | * |
| 104 | * TODO: fill this in! |
| 105 | */ |
| 106 | static inline void sched_cacheflush(void) |
| 107 | { |
| 108 | } |
| 109 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | #ifdef CONFIG_VIRT_CPU_ACCOUNTING |
Martin Schwidefsky | 1f1c12a | 2006-01-14 13:21:03 -0800 | [diff] [blame] | 111 | extern void account_vtime(struct task_struct *); |
| 112 | extern void account_tick_vtime(struct task_struct *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | extern void account_system_vtime(struct task_struct *); |
Jan Blunck | 5c83389 | 2006-03-06 15:42:46 -0800 | [diff] [blame] | 114 | #else |
| 115 | #define account_vtime(x) do { /* empty */ } while (0) |
Nick Piggin | 4866cde | 2005-06-25 14:57:23 -0700 | [diff] [blame] | 116 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | |
Heiko Carstens | 29b08d2 | 2006-12-04 15:40:40 +0100 | [diff] [blame] | 118 | #ifdef CONFIG_PFAULT |
| 119 | extern void pfault_irq_init(void); |
| 120 | extern int pfault_init(void); |
| 121 | extern void pfault_fini(void); |
| 122 | #else /* CONFIG_PFAULT */ |
| 123 | #define pfault_irq_init() do { } while (0) |
| 124 | #define pfault_init() ({-1;}) |
| 125 | #define pfault_fini() do { } while (0) |
| 126 | #endif /* CONFIG_PFAULT */ |
| 127 | |
Heiko Carstens | 5ee24d95 | 2005-06-30 02:58:48 -0700 | [diff] [blame] | 128 | #define finish_arch_switch(prev) do { \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | set_fs(current->thread.mm_segment); \ |
Martin Schwidefsky | 1f1c12a | 2006-01-14 13:21:03 -0800 | [diff] [blame] | 130 | account_vtime(prev); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | } while (0) |
| 132 | |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 133 | #define nop() asm volatile("nop") |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | |
Heiko Carstens | 5a651c9 | 2006-07-17 16:09:18 +0200 | [diff] [blame] | 135 | #define xchg(ptr,x) \ |
| 136 | ({ \ |
| 137 | __typeof__(*(ptr)) __ret; \ |
| 138 | __ret = (__typeof__(*(ptr))) \ |
| 139 | __xchg((unsigned long)(x), (void *)(ptr),sizeof(*(ptr))); \ |
| 140 | __ret; \ |
| 141 | }) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | |
| 143 | static inline unsigned long __xchg(unsigned long x, void * ptr, int size) |
| 144 | { |
| 145 | unsigned long addr, old; |
| 146 | int shift; |
| 147 | |
| 148 | switch (size) { |
| 149 | case 1: |
| 150 | addr = (unsigned long) ptr; |
| 151 | shift = (3 ^ (addr & 3)) << 3; |
| 152 | addr ^= addr & 3; |
| 153 | asm volatile( |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 154 | " l %0,0(%4)\n" |
| 155 | "0: lr 0,%0\n" |
| 156 | " nr 0,%3\n" |
| 157 | " or 0,%2\n" |
| 158 | " cs %0,0,0(%4)\n" |
| 159 | " jl 0b\n" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | : "=&d" (old), "=m" (*(int *) addr) |
| 161 | : "d" (x << shift), "d" (~(255 << shift)), "a" (addr), |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 162 | "m" (*(int *) addr) : "memory", "cc", "0"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | x = old >> shift; |
| 164 | break; |
| 165 | case 2: |
| 166 | addr = (unsigned long) ptr; |
| 167 | shift = (2 ^ (addr & 2)) << 3; |
| 168 | addr ^= addr & 2; |
| 169 | asm volatile( |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 170 | " l %0,0(%4)\n" |
| 171 | "0: lr 0,%0\n" |
| 172 | " nr 0,%3\n" |
| 173 | " or 0,%2\n" |
| 174 | " cs %0,0,0(%4)\n" |
| 175 | " jl 0b\n" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | : "=&d" (old), "=m" (*(int *) addr) |
| 177 | : "d" (x << shift), "d" (~(65535 << shift)), "a" (addr), |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 178 | "m" (*(int *) addr) : "memory", "cc", "0"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | x = old >> shift; |
| 180 | break; |
| 181 | case 4: |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 182 | asm volatile( |
| 183 | " l %0,0(%3)\n" |
| 184 | "0: cs %0,%2,0(%3)\n" |
| 185 | " jl 0b\n" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | : "=&d" (old), "=m" (*(int *) ptr) |
| 187 | : "d" (x), "a" (ptr), "m" (*(int *) ptr) |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 188 | : "memory", "cc"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | x = old; |
| 190 | break; |
| 191 | #ifdef __s390x__ |
| 192 | case 8: |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 193 | asm volatile( |
| 194 | " lg %0,0(%3)\n" |
| 195 | "0: csg %0,%2,0(%3)\n" |
| 196 | " jl 0b\n" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | : "=&d" (old), "=m" (*(long *) ptr) |
| 198 | : "d" (x), "a" (ptr), "m" (*(long *) ptr) |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 199 | : "memory", "cc"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | x = old; |
| 201 | break; |
| 202 | #endif /* __s390x__ */ |
| 203 | } |
| 204 | return x; |
| 205 | } |
| 206 | |
| 207 | /* |
| 208 | * Atomic compare and exchange. Compare OLD with MEM, if identical, |
| 209 | * store NEW in MEM. Return the initial value in MEM. Success is |
| 210 | * indicated by comparing RETURN with OLD. |
| 211 | */ |
| 212 | |
| 213 | #define __HAVE_ARCH_CMPXCHG 1 |
| 214 | |
| 215 | #define cmpxchg(ptr,o,n)\ |
| 216 | ((__typeof__(*(ptr)))__cmpxchg((ptr),(unsigned long)(o),\ |
| 217 | (unsigned long)(n),sizeof(*(ptr)))) |
| 218 | |
| 219 | static inline unsigned long |
| 220 | __cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, int size) |
| 221 | { |
| 222 | unsigned long addr, prev, tmp; |
| 223 | int shift; |
| 224 | |
| 225 | switch (size) { |
| 226 | case 1: |
| 227 | addr = (unsigned long) ptr; |
| 228 | shift = (3 ^ (addr & 3)) << 3; |
| 229 | addr ^= addr & 3; |
| 230 | asm volatile( |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 231 | " l %0,0(%4)\n" |
| 232 | "0: nr %0,%5\n" |
| 233 | " lr %1,%0\n" |
| 234 | " or %0,%2\n" |
| 235 | " or %1,%3\n" |
| 236 | " cs %0,%1,0(%4)\n" |
| 237 | " jnl 1f\n" |
| 238 | " xr %1,%0\n" |
| 239 | " nr %1,%5\n" |
| 240 | " jnz 0b\n" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | "1:" |
| 242 | : "=&d" (prev), "=&d" (tmp) |
| 243 | : "d" (old << shift), "d" (new << shift), "a" (ptr), |
| 244 | "d" (~(255 << shift)) |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 245 | : "memory", "cc"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | return prev >> shift; |
| 247 | case 2: |
| 248 | addr = (unsigned long) ptr; |
| 249 | shift = (2 ^ (addr & 2)) << 3; |
| 250 | addr ^= addr & 2; |
| 251 | asm volatile( |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 252 | " l %0,0(%4)\n" |
| 253 | "0: nr %0,%5\n" |
| 254 | " lr %1,%0\n" |
| 255 | " or %0,%2\n" |
| 256 | " or %1,%3\n" |
| 257 | " cs %0,%1,0(%4)\n" |
| 258 | " jnl 1f\n" |
| 259 | " xr %1,%0\n" |
| 260 | " nr %1,%5\n" |
| 261 | " jnz 0b\n" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | "1:" |
| 263 | : "=&d" (prev), "=&d" (tmp) |
| 264 | : "d" (old << shift), "d" (new << shift), "a" (ptr), |
| 265 | "d" (~(65535 << shift)) |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 266 | : "memory", "cc"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | return prev >> shift; |
| 268 | case 4: |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 269 | asm volatile( |
| 270 | " cs %0,%2,0(%3)\n" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | : "=&d" (prev) : "0" (old), "d" (new), "a" (ptr) |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 272 | : "memory", "cc"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | return prev; |
| 274 | #ifdef __s390x__ |
| 275 | case 8: |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 276 | asm volatile( |
| 277 | " csg %0,%2,0(%3)\n" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | : "=&d" (prev) : "0" (old), "d" (new), "a" (ptr) |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 279 | : "memory", "cc"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | return prev; |
| 281 | #endif /* __s390x__ */ |
| 282 | } |
| 283 | return old; |
| 284 | } |
| 285 | |
| 286 | /* |
| 287 | * Force strict CPU ordering. |
| 288 | * And yes, this is required on UP too when we're talking |
| 289 | * to devices. |
| 290 | * |
| 291 | * This is very similar to the ppc eieio/sync instruction in that is |
| 292 | * does a checkpoint syncronisation & makes sure that |
| 293 | * all memory ops have completed wrt other CPU's ( see 7-15 POP DJB ). |
| 294 | */ |
| 295 | |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 296 | #define eieio() asm volatile("bcr 15,0" : : : "memory") |
| 297 | #define SYNC_OTHER_CORES(x) eieio() |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | #define mb() eieio() |
| 299 | #define rmb() eieio() |
| 300 | #define wmb() eieio() |
| 301 | #define read_barrier_depends() do { } while(0) |
| 302 | #define smp_mb() mb() |
| 303 | #define smp_rmb() rmb() |
| 304 | #define smp_wmb() wmb() |
| 305 | #define smp_read_barrier_depends() read_barrier_depends() |
| 306 | #define smp_mb__before_clear_bit() smp_mb() |
| 307 | #define smp_mb__after_clear_bit() smp_mb() |
| 308 | |
| 309 | |
| 310 | #define set_mb(var, value) do { var = value; mb(); } while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | #ifdef __s390x__ |
| 313 | |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 314 | #define __ctl_load(array, low, high) ({ \ |
| 315 | typedef struct { char _[sizeof(array)]; } addrtype; \ |
| 316 | asm volatile( \ |
| 317 | " lctlg %1,%2,0(%0)\n" \ |
| 318 | : : "a" (&array), "i" (low), "i" (high), \ |
| 319 | "m" (*(addrtype *)(array))); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | }) |
| 321 | |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 322 | #define __ctl_store(array, low, high) ({ \ |
| 323 | typedef struct { char _[sizeof(array)]; } addrtype; \ |
| 324 | asm volatile( \ |
| 325 | " stctg %2,%3,0(%1)\n" \ |
| 326 | : "=m" (*(addrtype *)(array)) \ |
| 327 | : "a" (&array), "i" (low), "i" (high)); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | }) |
| 329 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | #else /* __s390x__ */ |
| 331 | |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 332 | #define __ctl_load(array, low, high) ({ \ |
| 333 | typedef struct { char _[sizeof(array)]; } addrtype; \ |
| 334 | asm volatile( \ |
| 335 | " lctl %1,%2,0(%0)\n" \ |
| 336 | : : "a" (&array), "i" (low), "i" (high), \ |
| 337 | "m" (*(addrtype *)(array))); \ |
| 338 | }) |
| 339 | |
| 340 | #define __ctl_store(array, low, high) ({ \ |
| 341 | typedef struct { char _[sizeof(array)]; } addrtype; \ |
| 342 | asm volatile( \ |
| 343 | " stctl %2,%3,0(%1)\n" \ |
| 344 | : "=m" (*(addrtype *)(array)) \ |
| 345 | : "a" (&array), "i" (low), "i" (high)); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | }) |
| 347 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | #endif /* __s390x__ */ |
| 349 | |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 350 | #define __ctl_set_bit(cr, bit) ({ \ |
| 351 | unsigned long __dummy; \ |
| 352 | __ctl_store(__dummy, cr, cr); \ |
| 353 | __dummy |= 1UL << (bit); \ |
| 354 | __ctl_load(__dummy, cr, cr); \ |
| 355 | }) |
| 356 | |
| 357 | #define __ctl_clear_bit(cr, bit) ({ \ |
| 358 | unsigned long __dummy; \ |
| 359 | __ctl_store(__dummy, cr, cr); \ |
| 360 | __dummy &= ~(1UL << (bit)); \ |
| 361 | __ctl_load(__dummy, cr, cr); \ |
| 362 | }) |
| 363 | |
Heiko Carstens | 1f194a4 | 2006-07-03 00:24:46 -0700 | [diff] [blame] | 364 | #include <linux/irqflags.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | |
Heiko Carstens | 77fa224 | 2005-06-25 14:55:30 -0700 | [diff] [blame] | 366 | /* |
| 367 | * Use to set psw mask except for the first byte which |
| 368 | * won't be changed by this function. |
| 369 | */ |
| 370 | static inline void |
| 371 | __set_psw_mask(unsigned long mask) |
| 372 | { |
Martin Schwidefsky | 94c12cc | 2006-09-28 16:56:43 +0200 | [diff] [blame] | 373 | __load_psw_mask(mask | (__raw_local_irq_stosm(0x00) & ~(-1UL >> 8))); |
Heiko Carstens | 77fa224 | 2005-06-25 14:55:30 -0700 | [diff] [blame] | 374 | } |
| 375 | |
| 376 | #define local_mcck_enable() __set_psw_mask(PSW_KERNEL_BITS) |
| 377 | #define local_mcck_disable() __set_psw_mask(PSW_KERNEL_BITS & ~PSW_MASK_MCHECK) |
| 378 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | #ifdef CONFIG_SMP |
| 380 | |
| 381 | extern void smp_ctl_set_bit(int cr, int bit); |
| 382 | extern void smp_ctl_clear_bit(int cr, int bit); |
| 383 | #define ctl_set_bit(cr, bit) smp_ctl_set_bit(cr, bit) |
| 384 | #define ctl_clear_bit(cr, bit) smp_ctl_clear_bit(cr, bit) |
| 385 | |
| 386 | #else |
| 387 | |
| 388 | #define ctl_set_bit(cr, bit) __ctl_set_bit(cr, bit) |
| 389 | #define ctl_clear_bit(cr, bit) __ctl_clear_bit(cr, bit) |
| 390 | |
| 391 | #endif /* CONFIG_SMP */ |
| 392 | |
| 393 | extern void (*_machine_restart)(char *command); |
| 394 | extern void (*_machine_halt)(void); |
| 395 | extern void (*_machine_power_off)(void); |
| 396 | |
| 397 | #define arch_align_stack(x) (x) |
| 398 | |
| 399 | #endif /* __KERNEL__ */ |
| 400 | |
| 401 | #endif |