| /* |
| * interface to Blackfin CEC |
| * |
| * Copyright 2009 Analog Devices Inc. |
| * Licensed under the GPL-2 or later. |
| */ |
| |
| #ifndef __ASM_BFIN_IRQFLAGS_H__ |
| #define __ASM_BFIN_IRQFLAGS_H__ |
| |
| #ifdef CONFIG_SMP |
| # include <asm/pda.h> |
| # include <asm/processor.h> |
| /* Forward decl needed due to cdef inter dependencies */ |
| static inline uint32_t __pure bfin_dspid(void); |
| # define blackfin_core_id() (bfin_dspid() & 0xff) |
| # define bfin_irq_flags cpu_pda[blackfin_core_id()].imask |
| #else |
| extern unsigned long bfin_irq_flags; |
| #endif |
| |
| static inline void bfin_sti(unsigned long flags) |
| { |
| asm volatile("sti %0;" : : "d" (flags)); |
| } |
| |
| static inline unsigned long bfin_cli(void) |
| { |
| unsigned long flags; |
| asm volatile("cli %0;" : "=d" (flags)); |
| return flags; |
| } |
| |
| static inline void raw_local_irq_disable(void) |
| { |
| bfin_cli(); |
| } |
| static inline void raw_local_irq_enable(void) |
| { |
| bfin_sti(bfin_irq_flags); |
| } |
| |
| #define raw_local_save_flags(flags) do { (flags) = bfin_read_IMASK(); } while (0) |
| |
| #define raw_irqs_disabled_flags(flags) (((flags) & ~0x3f) == 0) |
| |
| static inline void raw_local_irq_restore(unsigned long flags) |
| { |
| if (!raw_irqs_disabled_flags(flags)) |
| raw_local_irq_enable(); |
| } |
| |
| static inline unsigned long __raw_local_irq_save(void) |
| { |
| unsigned long flags = bfin_cli(); |
| #ifdef CONFIG_DEBUG_HWERR |
| bfin_sti(0x3f); |
| #endif |
| return flags; |
| } |
| #define raw_local_irq_save(flags) do { (flags) = __raw_local_irq_save(); } while (0) |
| |
| #endif |