diff options
author | Philippe Gerum <rpm@xenomai.org> | 2011-03-17 02:16:16 -0400 |
---|---|---|
committer | Mike Frysinger <vapier@gentoo.org> | 2011-03-18 04:01:11 -0400 |
commit | 1353d050facf5efd8dc05ba6c4d7852fcb423b15 (patch) | |
tree | cc33a181616f96f467b06a9c9a6f0f98bf89f78f /arch/blackfin | |
parent | 9169b51f8ce6cd11cd19913b54466ec11e6a12f9 (diff) |
Blackfin/ipipe: restore pipeline bits in irqflags
This patch fixes the Blackfin irqflags to make them I-pipe aware anew,
after the introduction of the hard_local_irq_*() API.
Signed-off-by: Philippe Gerum <rpm@xenomai.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin')
-rw-r--r-- | arch/blackfin/include/asm/irqflags.h | 87 |
1 files changed, 77 insertions, 10 deletions
diff --git a/arch/blackfin/include/asm/irqflags.h b/arch/blackfin/include/asm/irqflags.h index 3365cb97f53..b4bbb75a9e1 100644 --- a/arch/blackfin/include/asm/irqflags.h +++ b/arch/blackfin/include/asm/irqflags.h @@ -89,15 +89,33 @@ static inline void __hard_local_irq_restore(unsigned long flags) #ifdef CONFIG_IPIPE #include <linux/compiler.h> -#include <linux/ipipe_base.h> #include <linux/ipipe_trace.h> +/* + * Way too many inter-deps between low-level headers in this port, so + * we redeclare the required bits we cannot pick from + * <asm/ipipe_base.h> to prevent circular dependencies. + */ +void __ipipe_stall_root(void); +void __ipipe_unstall_root(void); +unsigned long __ipipe_test_root(void); +unsigned long __ipipe_test_and_stall_root(void); +void __ipipe_restore_root(unsigned long flags); + +#ifdef CONFIG_IPIPE_DEBUG_CONTEXT +struct ipipe_domain; +extern struct ipipe_domain ipipe_root; +void ipipe_check_context(struct ipipe_domain *ipd); +#define __check_irqop_context(ipd) ipipe_check_context(&ipipe_root) +#else /* !CONFIG_IPIPE_DEBUG_CONTEXT */ +#define __check_irqop_context(ipd) do { } while (0) +#endif /* !CONFIG_IPIPE_DEBUG_CONTEXT */ /* * Interrupt pipe interface to linux/irqflags.h. */ static inline void arch_local_irq_disable(void) { - ipipe_check_context(ipipe_root_domain); + __check_irqop_context(); __ipipe_stall_root(); barrier(); } @@ -105,7 +123,7 @@ static inline void arch_local_irq_disable(void) static inline void arch_local_irq_enable(void) { barrier(); - ipipe_check_context(ipipe_root_domain); + __check_irqop_context(); __ipipe_unstall_root(); } @@ -119,16 +137,21 @@ static inline int arch_irqs_disabled_flags(unsigned long flags) return flags == bfin_no_irqs; } -static inline void arch_local_irq_save_ptr(unsigned long *_flags) +static inline unsigned long arch_local_irq_save(void) { - x = __ipipe_test_and_stall_root() ? bfin_no_irqs : bfin_irq_flags; + unsigned long flags; + + __check_irqop_context(); + flags = __ipipe_test_and_stall_root() ? bfin_no_irqs : bfin_irq_flags; barrier(); + + return flags; } -static inline unsigned long arch_local_irq_save(void) +static inline void arch_local_irq_restore(unsigned long flags) { - ipipe_check_context(ipipe_root_domain); - return __hard_local_irq_save(); + __check_irqop_context(); + __ipipe_restore_root(flags == bfin_no_irqs); } static inline unsigned long arch_mangle_irq_bits(int virt, unsigned long real) @@ -192,7 +215,10 @@ static inline void hard_local_irq_restore(unsigned long flags) # define hard_local_irq_restore(flags) __hard_local_irq_restore(flags) #endif /* !CONFIG_IPIPE_TRACE_IRQSOFF */ -#else /* CONFIG_IPIPE */ +#define hard_local_irq_save_cond() hard_local_irq_save() +#define hard_local_irq_restore_cond(flags) hard_local_irq_restore(flags) + +#else /* !CONFIG_IPIPE */ /* * Direct interface to linux/irqflags.h. @@ -212,7 +238,48 @@ static inline void hard_local_irq_restore(unsigned long flags) #define hard_local_irq_restore(flags) __hard_local_irq_restore(flags) #define hard_local_irq_enable() __hard_local_irq_enable() #define hard_local_irq_disable() __hard_local_irq_disable() - +#define hard_local_irq_save_cond() hard_local_save_flags() +#define hard_local_irq_restore_cond(flags) do { (void)(flags); } while (0) #endif /* !CONFIG_IPIPE */ + +#ifdef CONFIG_SMP +#define hard_local_irq_save_smp() hard_local_irq_save() +#define hard_local_irq_restore_smp(flags) hard_local_irq_restore(flags) +#else +#define hard_local_irq_save_smp() hard_local_save_flags() +#define hard_local_irq_restore_smp(flags) do { (void)(flags); } while (0) +#endif + +/* + * Remap the arch-neutral IRQ state manipulation macros to the + * blackfin-specific hard_local_irq_* API. + */ +#define local_irq_save_hw(flags) \ + do { \ + (flags) = hard_local_irq_save(); \ + } while (0) +#define local_irq_restore_hw(flags) \ + do { \ + hard_local_irq_restore(flags); \ + } while (0) +#define local_irq_disable_hw() \ + do { \ + hard_local_irq_disable(); \ + } while (0) +#define local_irq_enable_hw() \ + do { \ + hard_local_irq_enable(); \ + } while (0) +#define local_irq_save_hw_notrace(flags) \ + do { \ + (flags) = __hard_local_irq_save(); \ + } while (0) +#define local_irq_restore_hw_notrace(flags) \ + do { \ + __hard_local_irq_restore(flags); \ + } while (0) + +#define irqs_disabled_hw() hard_irqs_disabled() + #endif |