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Diffstat (limited to 'include/asm-blackfin/system.h')
| -rw-r--r-- | include/asm-blackfin/system.h | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/include/asm-blackfin/system.h b/include/asm-blackfin/system.h deleted file mode 100644 index 51494ef5bb4..00000000000 --- a/include/asm-blackfin/system.h +++ /dev/null @@ -1,221 +0,0 @@ -/* - * File: include/asm/system.h - * Based on: - * Author: Tony Kou (tonyko@lineo.ca) - * Copyright (c) 2002 Arcturus Networks Inc. - * (www.arcturusnetworks.com) - * Copyright (c) 2003 Metrowerks (www.metrowerks.com) - * Copyright (c) 2004 Analog Device Inc. - * Created: 25Jan2001 - Tony Kou - * Description: system.h include file - * - * Modified: 22Sep2006 - Robin Getz - * - move include blackfin.h down, so I can get access to - * irq functions in other include files. - * - * Bugs: Enter bugs at http://blackfin.uclinux.org/ - * - * 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, 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; see the file COPYING. - * If not, write to the Free Software Foundation, - * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - */ - -#ifndef _BLACKFIN_SYSTEM_H -#define _BLACKFIN_SYSTEM_H - -#include <linux/linkage.h> -#include <linux/compiler.h> -#include <asm/mach/anomaly.h> - -/* - * Interrupt configuring macros. - */ - -extern unsigned long 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) - -#if ANOMALY_05000244 && defined(CONFIG_BFIN_ICACHE) -# define NOP_PAD_ANOMALY_05000244 "nop; nop;" -#else -# define NOP_PAD_ANOMALY_05000244 -#endif - -#define idle_with_irq_disabled() \ - __asm__ __volatile__( \ - NOP_PAD_ANOMALY_05000244 \ - ".align 8;" \ - "sti %0;" \ - "idle;" \ - : \ - : "d" (irq_flags) \ - ) - -#ifdef CONFIG_DEBUG_HWERR -# define __save_and_cli(x) \ - __asm__ __volatile__( \ - "cli %0;" \ - "sti %1;" \ - : "=&d" (x) \ - : "d" (0x3F) \ - ) -#else -# define __save_and_cli(x) \ - __asm__ __volatile__( \ - "cli %0;" \ - : "=&d" (x) \ - ) -#endif - -#define local_save_flags(x) \ - __asm__ __volatile__( \ - "cli %0;" \ - "sti %0;" \ - : "=d" (x) \ - ) - -#ifdef CONFIG_DEBUG_HWERR -#define irqs_enabled_from_flags(x) (((x) & ~0x3f) != 0) -#else -#define irqs_enabled_from_flags(x) ((x) != 0x1f) -#endif - -#define local_irq_restore(x) \ - do { \ - if (irqs_enabled_from_flags(x)) \ - local_irq_enable(); \ - } while (0) - -/* For spinlocks etc */ -#define local_irq_save(x) __save_and_cli(x) - -#define irqs_disabled() \ -({ \ - unsigned long flags; \ - local_save_flags(flags); \ - !irqs_enabled_from_flags(flags); \ -}) - -/* - * 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_mb(var, value) do { (void) xchg(&var, value); } while (0) - -#define read_barrier_depends() do { } while(0) - -#ifdef CONFIG_SMP -#define smp_mb() mb() -#define smp_rmb() rmb() -#define smp_wmb() wmb() -#define smp_read_barrier_depends() read_barrier_depends() -#else -#define smp_mb() barrier() -#define smp_rmb() barrier() -#define smp_wmb() barrier() -#define smp_read_barrier_depends() do { } while(0) -#endif - -#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; -} - -#include <asm-generic/cmpxchg-local.h> - -/* - * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make - * them available. - */ -#define cmpxchg_local(ptr, o, n) \ - ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\ - (unsigned long)(n), sizeof(*(ptr)))) -#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n)) - -#ifndef CONFIG_SMP -#include <asm-generic/cmpxchg.h> -#endif - -#define prepare_to_switch() do { } while(0) - -/* - * switch_to(n) should switch tasks to task ptr, first checking that - * ptr isn't the current task, in which case it does nothing. - */ - -#include <asm/blackfin.h> - -asmlinkage struct task_struct *resume(struct task_struct *prev, struct task_struct *next); - -#define switch_to(prev,next,last) \ -do { \ - memcpy (&task_thread_info(prev)->l1_task_info, L1_SCRATCH_TASK_INFO, \ - sizeof *L1_SCRATCH_TASK_INFO); \ - memcpy (L1_SCRATCH_TASK_INFO, &task_thread_info(next)->l1_task_info, \ - sizeof *L1_SCRATCH_TASK_INFO); \ - (last) = resume (prev, next); \ -} while (0) - -#endif /* _BLACKFIN_SYSTEM_H */ |