103 lines
2.6 KiB
C
103 lines
2.6 KiB
C
/*
|
|
* Copyright (c) 2013-2015, Wind River Systems, Inc.
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* @brief system module for variants with LOAPIC
|
|
*
|
|
*/
|
|
|
|
#include <sys/__assert.h>
|
|
#include <kernel.h>
|
|
#include <arch/cpu.h>
|
|
#include <drivers/interrupt_controller/ioapic.h>
|
|
#include <drivers/interrupt_controller/loapic.h>
|
|
#include <drivers/interrupt_controller/sysapic.h>
|
|
#include <irq.h>
|
|
|
|
#define IS_IOAPIC_IRQ(irq) (irq < z_loapic_irq_base())
|
|
#define HARDWARE_IRQ_LIMIT ((z_loapic_irq_base() + LOAPIC_IRQ_COUNT) - 1)
|
|
|
|
/**
|
|
*
|
|
* @brief Program interrupt controller
|
|
*
|
|
* This routine programs the interrupt controller with the given vector
|
|
* based on the given IRQ parameter.
|
|
*
|
|
* Drivers call this routine instead of IRQ_CONNECT() when interrupts are
|
|
* configured statically.
|
|
*
|
|
* The Galileo board virtualizes IRQs as follows:
|
|
*
|
|
* - The first z_ioapic_num_rtes() IRQs are provided by the IOAPIC so the
|
|
* IOAPIC is programmed for these IRQs
|
|
* - The remaining IRQs are provided by the LOAPIC and hence the LOAPIC is
|
|
* programmed.
|
|
*
|
|
* @param vector the vector number
|
|
* @param irq the virtualized IRQ
|
|
* @param flags interrupt flags
|
|
*
|
|
*/
|
|
void z_irq_controller_irq_config(unsigned int vector, unsigned int irq,
|
|
uint32_t flags)
|
|
{
|
|
__ASSERT(irq <= HARDWARE_IRQ_LIMIT, "invalid irq line");
|
|
|
|
if (IS_IOAPIC_IRQ(irq)) {
|
|
z_ioapic_irq_set(irq, vector, flags);
|
|
} else {
|
|
z_loapic_int_vec_set(irq - z_loapic_irq_base(), vector);
|
|
}
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @brief Enable an individual interrupt (IRQ)
|
|
*
|
|
* The public interface for enabling/disabling a specific IRQ for the IA-32
|
|
* architecture is defined as follows in include/arch/x86/arch.h
|
|
*
|
|
* extern void irq_enable (unsigned int irq);
|
|
* extern void irq_disable (unsigned int irq);
|
|
*
|
|
* The irq_enable() routine is provided by the interrupt controller driver due
|
|
* to the IRQ virtualization that is performed by this platform. See the
|
|
* comments in _interrupt_vector_allocate() for more information regarding IRQ
|
|
* virtualization.
|
|
*
|
|
* @return N/A
|
|
*/
|
|
void arch_irq_enable(unsigned int irq)
|
|
{
|
|
if (IS_IOAPIC_IRQ(irq)) {
|
|
z_ioapic_irq_enable(irq);
|
|
} else {
|
|
z_loapic_irq_enable(irq - z_loapic_irq_base());
|
|
}
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @brief Disable an individual interrupt (IRQ)
|
|
*
|
|
* The irq_disable() routine is provided by the interrupt controller driver due
|
|
* to the IRQ virtualization that is performed by this platform. See the
|
|
* comments in _interrupt_vector_allocate() for more information regarding IRQ
|
|
* virtualization.
|
|
*
|
|
* @return N/A
|
|
*/
|
|
void arch_irq_disable(unsigned int irq)
|
|
{
|
|
if (IS_IOAPIC_IRQ(irq)) {
|
|
z_ioapic_irq_disable(irq);
|
|
} else {
|
|
z_loapic_irq_disable(irq - z_loapic_irq_base());
|
|
}
|
|
}
|