1 #ifndef _M68K_IRQFLAGS_H 2 #define _M68K_IRQFLAGS_H 3 4 #include <linux/types.h> 5 #ifdef CONFIG_MMU 6 #include <linux/hardirq.h> 7 #endif 8 #include <linux/preempt.h> 9 #include <asm/thread_info.h> 10 #include <asm/entry.h> 11 12 static inline unsigned long arch_local_save_flags(void) 13 { 14 unsigned long flags; 15 asm volatile ("movew %%sr,%0" : "=d" (flags) : : "memory"); 16 return flags; 17 } 18 19 static inline void arch_local_irq_disable(void) 20 { 21 #ifdef CONFIG_COLDFIRE 22 asm volatile ( 23 "move %/sr,%%d0 \n\t" 24 "ori.l #0x0700,%%d0 \n\t" 25 "move %%d0,%/sr \n" 26 : /* no outputs */ 27 : 28 : "cc", "%d0", "memory"); 29 #else 30 asm volatile ("oriw #0x0700,%%sr" : : : "memory"); 31 #endif 32 } 33 34 static inline void arch_local_irq_enable(void) 35 { 36 #if defined(CONFIG_COLDFIRE) 37 asm volatile ( 38 "move %/sr,%%d0 \n\t" 39 "andi.l #0xf8ff,%%d0 \n\t" 40 "move %%d0,%/sr \n" 41 : /* no outputs */ 42 : 43 : "cc", "%d0", "memory"); 44 #else 45 # if defined(CONFIG_MMU) 46 if (MACH_IS_Q40 || !hardirq_count()) 47 # endif 48 asm volatile ( 49 "andiw %0,%%sr" 50 : 51 : "i" (ALLOWINT) 52 : "memory"); 53 #endif 54 } 55 56 static inline unsigned long arch_local_irq_save(void) 57 { 58 unsigned long flags = arch_local_save_flags(); 59 arch_local_irq_disable(); 60 return flags; 61 } 62 63 static inline void arch_local_irq_restore(unsigned long flags) 64 { 65 asm volatile ("movew %0,%%sr" : : "d" (flags) : "memory"); 66 } 67 68 static inline bool arch_irqs_disabled_flags(unsigned long flags) 69 { 70 return (flags & ~ALLOWINT) != 0; 71 } 72 73 static inline bool arch_irqs_disabled(void) 74 { 75 return arch_irqs_disabled_flags(arch_local_save_flags()); 76 } 77 78 #endif /* _M68K_IRQFLAGS_H */ 79