sh: intc: Handle legacy IRQ reservation in vector map.
Different CPUs will have different starting vectors, with varying amounts of reserved or unusable vector space prior to the first slot. This introduces a legacy vector reservation system that inserts itself in between the CPU vector map registration and the platform specific IRQ setup. This works fine in practice as the only new vectors that boards need to establish on their own should be dynamically allocated rather than arbitrarily assigned. As a plus, this also makes all of the converted platforms sparseirq ready. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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@@ -84,4 +84,7 @@ struct intc_desc symbol __initdata = { \
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void __init register_intc_controller(struct intc_desc *desc);
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int intc_set_priority(unsigned int irq, unsigned int prio);
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int reserve_irq_vector(unsigned int irq);
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void reserve_irq_legacy(void);
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#endif /* __SH_INTC_H */
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