From a27354c9021a8423ef8c7d2bffad49cbf639eec1 Mon Sep 17 00:00:00 2001 From: Roman Yeryomin Date: Thu, 13 Sep 2012 00:40:35 +0300 Subject: Add realtek target files Signed-off-by: Roman Yeryomin --- .../realtek/files/arch/rlx/include/asm/system.h | 106 +++++++++++++++++++++ 1 file changed, 106 insertions(+) create mode 100644 target/linux/realtek/files/arch/rlx/include/asm/system.h (limited to 'target/linux/realtek/files/arch/rlx/include/asm/system.h') diff --git a/target/linux/realtek/files/arch/rlx/include/asm/system.h b/target/linux/realtek/files/arch/rlx/include/asm/system.h new file mode 100644 index 000000000..7ca9747e0 --- /dev/null +++ b/target/linux/realtek/files/arch/rlx/include/asm/system.h @@ -0,0 +1,106 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 1994, 95, 96, 97, 98, 99, 2003, 06 by Ralf Baechle + * Copyright (C) 1996 by Paul M. Antoine + * Copyright (C) 1999 Silicon Graphics + * Kevin D. Kissell, kevink@mips.org and Carsten Langgaard, carstenl@mips.com + * Copyright (C) 2000 MIPS Technologies, Inc. + */ +#ifndef _ASM_SYSTEM_H +#define _ASM_SYSTEM_H + +#include +#include +#include + +#include +#include +#include +#include + + +/* + * switch_to(n) should switch tasks to task nr n, first + * checking that n isn't the current task, in which case it does nothing. + */ +extern asmlinkage void *resume(void *last, void *next, void *next_ti); + +struct task_struct; + +#define switch_to(prev, next, last) \ +do { \ + (last) = resume(prev, next, task_thread_info(next)); \ +} while (0) + + +static inline unsigned long __xchg_u32(volatile int * m, unsigned int val) +{ + __u32 retval; + +#ifdef CONFIG_CPU_HAS_LLSC + unsigned long dummy; + + __asm__ __volatile__( + "1: ll %0, %3 # xchg_u32 \n" + " move %2, %z4 \n" + " sc %2, %1 \n" + " beqz %2, 2f \n" + " .subsection 2 \n" + "2: b 1b \n" + " .previous \n" + : "=&r" (retval), "=m" (*m), "=&r" (dummy) + : "R" (*m), "Jr" (val) + : "memory"); +#else + unsigned long flags; + + raw_local_irq_save(flags); + retval = *m; + *m = val; + raw_local_irq_restore(flags); /* implies memory barrier */ +#endif + + smp_llsc_mb(); + return retval; +} + +extern __u64 __xchg_u64_unsupported_on_32bit_kernels(volatile __u64 * m, __u64 val); +#define __xchg_u64 __xchg_u64_unsupported_on_32bit_kernels + +/* 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 __always_inline unsigned long __xchg(unsigned long x, volatile void * ptr, 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)))__xchg((unsigned long)(x), (ptr), sizeof(*(ptr)))) + +extern void set_handler(unsigned long offset, void *addr, unsigned long len); +extern void set_uncached_handler(unsigned long offset, void *addr, unsigned long len); + +extern void *set_except_vector(int n, void *addr); +extern unsigned long ebase; +extern void per_cpu_trap_init(void); + +/* + * See include/asm-ia64/system.h; prevents deadlock on SMP + * systems. + */ +#define __ARCH_WANT_UNLOCKED_CTXSW + +extern unsigned long arch_align_stack(unsigned long sp); + +#endif /* _ASM_SYSTEM_H */ -- cgit v1.2.3