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Diffstat (limited to 'include/asm-blackfin/system.h')
-rw-r--r-- | include/asm-blackfin/system.h | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/include/asm-blackfin/system.h b/include/asm-blackfin/system.h deleted file mode 100644 index 6bc7208..0000000 --- a/include/asm-blackfin/system.h +++ /dev/null @@ -1,121 +0,0 @@ -/* - * U-boot - system.h - * - * Copyright (c) 2005-2007 Analog Devices Inc. - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, - * MA 02110-1301 USA - */ - -#ifndef _BLACKFIN_SYSTEM_H -#define _BLACKFIN_SYSTEM_H - -/* - * Interrupt configuring macros. - */ - -extern int irq_flags; - -#define local_irq_enable() \ - __asm__ __volatile__ ( \ - "sti %0;" \ - : \ - : "d" (irq_flags) \ - ) - -#define local_irq_disable() \ - do { \ - int __tmp_dummy; \ - __asm__ __volatile__ ( \ - "cli %0;" \ - : "=d" (__tmp_dummy) \ - ); \ - } while (0) - -# define local_irq_save(x) \ - __asm__ __volatile__ ( \ - "cli %0;" \ - : "=&d" (x) \ - ) - -#define local_save_flags(x) \ - __asm__ __volatile__ ( \ - "cli %0;" \ - "sti %0;" \ - : "=d" (x) \ - ) - -#define irqs_enabled_from_flags(x) ((x) != 0x1f) - -#define local_irq_restore(x) \ - do { \ - if (irqs_enabled_from_flags(x)) \ - local_irq_enable(); \ - } while (0) - -/* - * Force strict CPU ordering. - */ -#define nop() asm volatile ("nop;\n\t"::) -#define mb() asm volatile ("" : : :"memory") -#define rmb() asm volatile ("" : : :"memory") -#define wmb() asm volatile ("" : : :"memory") -#define set_rmb(var, value) do { xchg(&var, value); } while (0) -#define set_mb(var, value) set_rmb(var, value) -#define set_wmb(var, value) do { var = value; wmb(); } while (0) - -#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) - -struct __xchg_dummy { - unsigned long a[100]; -}; -#define __xg(x) ((volatile struct __xchg_dummy *)(x)) - -static inline unsigned long __xchg(unsigned long x, volatile void *ptr, - int size) -{ - unsigned long tmp = 0; - unsigned long flags = 0; - - local_irq_save(flags); - - switch (size) { - case 1: - __asm__ __volatile__ - ("%0 = b%2 (z);\n\t" - "b%2 = %1;\n\t" - : "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory"); - break; - case 2: - __asm__ __volatile__ - ("%0 = w%2 (z);\n\t" - "w%2 = %1;\n\t" - : "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory"); - break; - case 4: - __asm__ __volatile__ - ("%0 = %2;\n\t" - "%2 = %1;\n\t" - : "=&d" (tmp) : "d" (x), "m" (*__xg(ptr)) : "memory"); - break; - } - local_irq_restore(flags); - return tmp; -} - -#endif /* _BLACKFIN_SYSTEM_H */ |