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sys/arch: Add new interfaces for allocating and checking IRQs

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Current usage was being limited to PCIE but there are new use case
that demand for this feature to be generalized.

It is made arch-specific since allocation policy may vary
per-architecture.

Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This commit is contained in:
Tomasz Bursztyka 2021-01-06 14:57:38 +01:00 • committed by Carles Cufí
commit b99eaca729
1 changed files with 33 additions and 0 deletions
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33
include/sys/arch_interface.h
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@ -343,6 +343,39 @@ int arch_irq_connect_dynamic(unsigned int irq, unsigned int priority,
* @see ISR_DIRECT_DECLARE()
*/
#ifndef CONFIG_PCIE_CONTROLLER
/**
* @brief Arch-specific hook for allocating IRQs
*
* Note: disable/enable IRQ relevantly inside the implementation of such
* function to avoid concurrency issues. Also, an allocated IRQ is assumed
* to be used thus a following @see arch_irq_is_used() should return true.
*
* @return The newly allocated IRQ or UINT_MAX on error.
*/
unsigned int arch_irq_allocate(void);
/**
* @brief Arch-specific hook for declaring an IRQ being used
*
* Note: disable/enable IRQ relevantly inside the implementation of such
* function to avoid concurrency issues.
*
* @param irq the IRQ to declare being used
*/
void arch_irq_set_used(unsigned int irq);
/**
* @brief Arch-specific hook for checking if an IRQ is being used already
*
* @param irq the IRQ to check
*
* @return true if being, false otherwise
*/
bool arch_irq_is_used(unsigned int irq);
#endif /* CONFIG_PCIE_CONTROLLER */
/**
* @def ARCH_EXCEPT(reason_p)
*