diff options
Diffstat (limited to 'arch/blackfin/include/asm/irqflags.h')
| -rw-r--r-- | arch/blackfin/include/asm/irqflags.h | 164 |
1 files changed, 158 insertions, 6 deletions
diff --git a/arch/blackfin/include/asm/irqflags.h b/arch/blackfin/include/asm/irqflags.h index 139cba4651b1..9b19a19d9ae9 100644 --- a/arch/blackfin/include/asm/irqflags.h +++ b/arch/blackfin/include/asm/irqflags.h @@ -31,6 +31,150 @@ static inline unsigned long bfin_cli(void) return flags; } +#ifdef CONFIG_IPIPE + +#include <linux/ipipe_base.h> +#include <linux/ipipe_trace.h> + +#ifdef CONFIG_DEBUG_HWERR +# define bfin_no_irqs 0x3f +#else +# define bfin_no_irqs 0x1f +#endif + +#define raw_local_irq_disable() \ + do { \ + ipipe_check_context(ipipe_root_domain); \ + __ipipe_stall_root(); \ + barrier(); \ + } while (0) + +static inline void raw_local_irq_enable(void) +{ + barrier(); + ipipe_check_context(ipipe_root_domain); + __ipipe_unstall_root(); +} + +#define raw_local_save_flags_ptr(x) \ + do { \ + *(x) = __ipipe_test_root() ? bfin_no_irqs : bfin_irq_flags; \ + } while (0) + +#define raw_local_save_flags(x) raw_local_save_flags_ptr(&(x)) + +#define raw_irqs_disabled_flags(x) ((x) == bfin_no_irqs) + +#define raw_local_irq_save_ptr(x) \ + do { \ + *(x) = __ipipe_test_and_stall_root() ? bfin_no_irqs : bfin_irq_flags; \ + barrier(); \ + } while (0) + +#define raw_local_irq_save(x) \ + do { \ + ipipe_check_context(ipipe_root_domain); \ + raw_local_irq_save_ptr(&(x)); \ + } while (0) + +static inline unsigned long raw_mangle_irq_bits(int virt, unsigned long real) +{ + /* + * Merge virtual and real interrupt mask bits into a single + * 32bit word. + */ + return (real & ~(1 << 31)) | ((virt != 0) << 31); +} + +static inline int raw_demangle_irq_bits(unsigned long *x) +{ + int virt = (*x & (1 << 31)) != 0; + *x &= ~(1L << 31); + return virt; +} + +static inline void local_irq_disable_hw_notrace(void) +{ + bfin_cli(); +} + +static inline void local_irq_enable_hw_notrace(void) +{ + bfin_sti(bfin_irq_flags); +} + +#define local_save_flags_hw(flags) \ + do { \ + (flags) = bfin_read_IMASK(); \ + } while (0) + +#define irqs_disabled_flags_hw(flags) (((flags) & ~0x3f) == 0) + +#define irqs_disabled_hw() \ + ({ \ + unsigned long flags; \ + local_save_flags_hw(flags); \ + irqs_disabled_flags_hw(flags); \ + }) + +static inline void local_irq_save_ptr_hw(unsigned long *flags) +{ + *flags = bfin_cli(); +#ifdef CONFIG_DEBUG_HWERR + bfin_sti(0x3f); +#endif +} + +#define local_irq_save_hw_notrace(flags) \ + do { \ + local_irq_save_ptr_hw(&(flags)); \ + } while (0) + +static inline void local_irq_restore_hw_notrace(unsigned long flags) +{ + if (!irqs_disabled_flags_hw(flags)) + local_irq_enable_hw_notrace(); +} + +#ifdef CONFIG_IPIPE_TRACE_IRQSOFF +# define local_irq_disable_hw() \ + do { \ + if (!irqs_disabled_hw()) { \ + local_irq_disable_hw_notrace(); \ + ipipe_trace_begin(0x80000000); \ + } \ + } while (0) +# define local_irq_enable_hw() \ + do { \ + if (irqs_disabled_hw()) { \ + ipipe_trace_end(0x80000000); \ + local_irq_enable_hw_notrace(); \ + } \ + } while (0) +# define local_irq_save_hw(flags) \ + do { \ + local_save_flags_hw(flags); \ + if (!irqs_disabled_flags_hw(flags)) { \ + local_irq_disable_hw_notrace(); \ + ipipe_trace_begin(0x80000001); \ + } \ + } while (0) +# define local_irq_restore_hw(flags) \ + do { \ + if (!irqs_disabled_flags_hw(flags)) { \ + ipipe_trace_end(0x80000001); \ + local_irq_enable_hw_notrace(); \ + } \ + } while (0) +#else /* !CONFIG_IPIPE_TRACE_IRQSOFF */ +# define local_irq_disable_hw() local_irq_disable_hw_notrace() +# define local_irq_enable_hw() local_irq_enable_hw_notrace() +# define local_irq_save_hw(flags) local_irq_save_hw_notrace(flags) +# define local_irq_restore_hw(flags) local_irq_restore_hw_notrace(flags) +#endif /* !CONFIG_IPIPE_TRACE_IRQSOFF */ + +#else /* CONFIG_IPIPE */ + static inline void raw_local_irq_disable(void) { bfin_cli(); @@ -44,12 +188,6 @@ static inline void raw_local_irq_enable(void) #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(); @@ -60,4 +198,18 @@ static inline unsigned long __raw_local_irq_save(void) } #define raw_local_irq_save(flags) do { (flags) = __raw_local_irq_save(); } while (0) +#define local_irq_save_hw(flags) raw_local_irq_save(flags) +#define local_irq_restore_hw(flags) raw_local_irq_restore(flags) +#define local_irq_enable_hw() raw_local_irq_enable() +#define local_irq_disable_hw() raw_local_irq_disable() +#define irqs_disabled_hw() irqs_disabled() + +#endif /* !CONFIG_IPIPE */ + +static inline void raw_local_irq_restore(unsigned long flags) +{ + if (!raw_irqs_disabled_flags(flags)) + raw_local_irq_enable(); +} + #endif |