7f1b1244e1
This adds support for disabling threading on a per-IRQ basis via the IRQ status instead of the IRQ flow, which is necessary for interrupts that don't follow the natural IRQ flow channels, such as those that are virtually created. The new APIs added are simply: irq_set_thread() irq_set_nothread() which follow the rest of the IRQ status routines. Chained handlers also have IRQ_NOTHREAD set on them automatically, making the lack of threading explicit rather than implicit. Subsequently, the nothread flag can be viewed through the standard genirq debugging facilities. [ tglx: Fixed cleanup fallout ] Signed-off-by: Paul Mundt <lethal@linux-sh.org> Link: http://lkml.kernel.org/r/%3C20110406210135.GF18426%40linux-sh.org%3E Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
143 lines
3.6 KiB
C
143 lines
3.6 KiB
C
/*
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* Internal header to deal with irq_desc->status which will be renamed
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* to irq_desc->settings.
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*/
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enum {
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_IRQ_DEFAULT_INIT_FLAGS = IRQ_DEFAULT_INIT_FLAGS,
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_IRQ_PER_CPU = IRQ_PER_CPU,
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_IRQ_LEVEL = IRQ_LEVEL,
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_IRQ_NOPROBE = IRQ_NOPROBE,
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_IRQ_NOREQUEST = IRQ_NOREQUEST,
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_IRQ_NOTHREAD = IRQ_NOTHREAD,
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_IRQ_NOAUTOEN = IRQ_NOAUTOEN,
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_IRQ_MOVE_PCNTXT = IRQ_MOVE_PCNTXT,
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_IRQ_NO_BALANCING = IRQ_NO_BALANCING,
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_IRQ_NESTED_THREAD = IRQ_NESTED_THREAD,
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_IRQF_MODIFY_MASK = IRQF_MODIFY_MASK,
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};
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#define IRQ_PER_CPU GOT_YOU_MORON
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#define IRQ_NO_BALANCING GOT_YOU_MORON
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#define IRQ_LEVEL GOT_YOU_MORON
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#define IRQ_NOPROBE GOT_YOU_MORON
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#define IRQ_NOREQUEST GOT_YOU_MORON
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#define IRQ_NOTHREAD GOT_YOU_MORON
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#define IRQ_NOAUTOEN GOT_YOU_MORON
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#define IRQ_NESTED_THREAD GOT_YOU_MORON
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#undef IRQF_MODIFY_MASK
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#define IRQF_MODIFY_MASK GOT_YOU_MORON
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static inline void
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irq_settings_clr_and_set(struct irq_desc *desc, u32 clr, u32 set)
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{
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desc->status_use_accessors &= ~(clr & _IRQF_MODIFY_MASK);
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desc->status_use_accessors |= (set & _IRQF_MODIFY_MASK);
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}
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static inline bool irq_settings_is_per_cpu(struct irq_desc *desc)
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{
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return desc->status_use_accessors & _IRQ_PER_CPU;
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}
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static inline void irq_settings_set_per_cpu(struct irq_desc *desc)
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{
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desc->status_use_accessors |= _IRQ_PER_CPU;
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}
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static inline void irq_settings_set_no_balancing(struct irq_desc *desc)
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{
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desc->status_use_accessors |= _IRQ_NO_BALANCING;
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}
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static inline bool irq_settings_has_no_balance_set(struct irq_desc *desc)
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{
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return desc->status_use_accessors & _IRQ_NO_BALANCING;
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}
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static inline u32 irq_settings_get_trigger_mask(struct irq_desc *desc)
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{
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return desc->status_use_accessors & IRQ_TYPE_SENSE_MASK;
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}
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static inline void
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irq_settings_set_trigger_mask(struct irq_desc *desc, u32 mask)
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{
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desc->status_use_accessors &= ~IRQ_TYPE_SENSE_MASK;
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desc->status_use_accessors |= mask & IRQ_TYPE_SENSE_MASK;
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}
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static inline bool irq_settings_is_level(struct irq_desc *desc)
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{
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return desc->status_use_accessors & _IRQ_LEVEL;
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}
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static inline void irq_settings_clr_level(struct irq_desc *desc)
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{
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desc->status_use_accessors &= ~_IRQ_LEVEL;
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}
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static inline void irq_settings_set_level(struct irq_desc *desc)
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{
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desc->status_use_accessors |= _IRQ_LEVEL;
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}
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static inline bool irq_settings_can_request(struct irq_desc *desc)
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{
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return !(desc->status_use_accessors & _IRQ_NOREQUEST);
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}
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static inline void irq_settings_clr_norequest(struct irq_desc *desc)
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{
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desc->status_use_accessors &= ~_IRQ_NOREQUEST;
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}
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static inline void irq_settings_set_norequest(struct irq_desc *desc)
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{
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desc->status_use_accessors |= _IRQ_NOREQUEST;
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}
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static inline bool irq_settings_can_thread(struct irq_desc *desc)
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{
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return !(desc->status_use_accessors & _IRQ_NOTHREAD);
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}
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static inline void irq_settings_clr_nothread(struct irq_desc *desc)
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{
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desc->status_use_accessors &= ~_IRQ_NOTHREAD;
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}
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static inline void irq_settings_set_nothread(struct irq_desc *desc)
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{
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desc->status_use_accessors |= _IRQ_NOTHREAD;
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}
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static inline bool irq_settings_can_probe(struct irq_desc *desc)
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{
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return !(desc->status_use_accessors & _IRQ_NOPROBE);
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}
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static inline void irq_settings_clr_noprobe(struct irq_desc *desc)
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{
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desc->status_use_accessors &= ~_IRQ_NOPROBE;
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}
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static inline void irq_settings_set_noprobe(struct irq_desc *desc)
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{
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desc->status_use_accessors |= _IRQ_NOPROBE;
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}
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static inline bool irq_settings_can_move_pcntxt(struct irq_desc *desc)
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{
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return desc->status_use_accessors & _IRQ_MOVE_PCNTXT;
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}
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static inline bool irq_settings_can_autoenable(struct irq_desc *desc)
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{
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return !(desc->status_use_accessors & _IRQ_NOAUTOEN);
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}
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static inline bool irq_settings_is_nested_thread(struct irq_desc *desc)
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{
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return desc->status_use_accessors & _IRQ_NESTED_THREAD;
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}
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