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103 lines
2.6 KiB
103 lines
2.6 KiB
/* |
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* Copyright (c) 2013-2015, Wind River Systems, Inc. |
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* |
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* SPDX-License-Identifier: Apache-2.0 |
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*/ |
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/** |
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* @file |
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* @brief system module for variants with LOAPIC |
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* |
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*/ |
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#include <misc/__assert.h> |
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#include <kernel.h> |
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#include <arch/cpu.h> |
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#include <drivers/ioapic.h> |
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#include <drivers/loapic.h> |
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#include <drivers/sysapic.h> |
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#include <irq.h> |
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#define IS_IOAPIC_IRQ(irq) (irq < LOAPIC_IRQ_BASE) |
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#define HARDWARE_IRQ_LIMIT ((LOAPIC_IRQ_BASE + LOAPIC_IRQ_COUNT) - 1) |
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/** |
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* |
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* @brief Program interrupt controller |
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* |
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* This routine programs the interrupt controller with the given vector |
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* based on the given IRQ parameter. |
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* |
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* Drivers call this routine instead of IRQ_CONNECT() when interrupts are |
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* configured statically. |
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* |
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* The Galileo board virtualizes IRQs as follows: |
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* |
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* - The first CONFIG_IOAPIC_NUM_RTES IRQs are provided by the IOAPIC so the |
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* IOAPIC is programmed for these IRQs |
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* - The remaining IRQs are provided by the LOAPIC and hence the LOAPIC is |
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* programmed. |
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* |
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* @param vector the vector number |
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* @param irq the virtualized IRQ |
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* @param flags interrupt flags |
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* |
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*/ |
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void __irq_controller_irq_config(unsigned int vector, unsigned int irq, |
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u32_t flags) |
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{ |
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__ASSERT(irq <= HARDWARE_IRQ_LIMIT, "invalid irq line"); |
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if (IS_IOAPIC_IRQ(irq)) { |
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z_ioapic_irq_set(irq, vector, flags); |
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} else { |
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z_loapic_int_vec_set(irq - LOAPIC_IRQ_BASE, vector); |
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} |
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} |
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/** |
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* |
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* @brief Enable an individual interrupt (IRQ) |
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* |
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* The public interface for enabling/disabling a specific IRQ for the IA-32 |
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* architecture is defined as follows in include/arch/x86/arch.h |
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* |
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* extern void irq_enable (unsigned int irq); |
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* extern void irq_disable (unsigned int irq); |
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* |
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* The irq_enable() routine is provided by the interrupt controller driver due |
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* to the IRQ virtualization that is performed by this platform. See the |
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* comments in _interrupt_vector_allocate() for more information regarding IRQ |
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* virtualization. |
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* |
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* @return N/A |
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*/ |
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void z_arch_irq_enable(unsigned int irq) |
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{ |
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if (IS_IOAPIC_IRQ(irq)) { |
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z_ioapic_irq_enable(irq); |
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} else { |
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z_loapic_irq_enable(irq - LOAPIC_IRQ_BASE); |
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} |
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} |
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/** |
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* |
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* @brief Disable an individual interrupt (IRQ) |
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* |
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* The irq_disable() routine is provided by the interrupt controller driver due |
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* to the IRQ virtualization that is performed by this platform. See the |
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* comments in _interrupt_vector_allocate() for more information regarding IRQ |
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* virtualization. |
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* |
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* @return N/A |
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*/ |
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void z_arch_irq_disable(unsigned int irq) |
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{ |
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if (IS_IOAPIC_IRQ(irq)) { |
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z_ioapic_irq_disable(irq); |
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} else { |
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z_loapic_irq_disable(irq - LOAPIC_IRQ_BASE); |
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} |
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} |
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