ioapic.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <device/device.h>
#include "chip.h"
#include <arch/ioapic.h>
 
static void ioapic_init(struct device *dev)
{
        struct drivers_generic_ioapic_config *config = dev->chip_info;
 
        if (!dev->enabled || !config)
                return;
 
        setup_ioapic(config->base, config->apicid);
}
 
static void ioapic_read_resources(struct device *dev)
{
        struct drivers_generic_ioapic_config *config = (struct drivers_generic_ioapic_config *)dev->chip_info;
        struct resource *res;
 
        res = new_resource(dev, 0);
        res->base = (resource_t)(uintptr_t)config->base;
        res->size = 0x1000;
        res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
}
 
static struct device_operations ioapic_operations = {
        .read_resources   = ioapic_read_resources,
        .set_resources    = noop_set_resources,
        .init             = ioapic_init,
};
 
static void enable_dev(struct device *dev)
{
        dev->ops = &ioapic_operations;
}
 
struct chip_operations drivers_generic_ioapic_ops = {
        CHIP_NAME("IOAPIC")
        .enable_dev = enable_dev,
};