acpi.h

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/*
 * Copyright (c) 2023 Intel Corporation.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
#ifndef ZEPHYR_INCLUDE_DRIVERS_ACPI_H_
#define ZEPHYR_INCLUDE_DRIVERS_ACPI_H_
#include <acpica/source/include/acpi.h>
#include <zephyr/drivers/pcie/pcie.h>
 
#define ACPI_RES_INVALID ACPI_RESOURCE_TYPE_MAX
 
#define ACPI_DRHD_FLAG_INCLUDE_PCI_ALL                  BIT(0)
#define ACPI_DMAR_FLAG_INTR_REMAP                               BIT(0)
#define ACPI_DMAR_FLAG_X2APIC_OPT_OUT                   BIT(1)
#define ACPI_DMAR_FLAG_DMA_CTRL_PLATFORM_OPT_IN BIT(2)
 
struct acpi_dev {
        ACPI_HANDLE handle;
        char *path;
        char hid[CONFIG_ACPI_HID_LEN_MAX];
        ACPI_RESOURCE *res_lst;
        int res_type;
        ACPI_DEVICE_INFO *dev_info;
};
 
union acpi_dmar_id {
        struct {
                uint16_t function: 3;
                uint16_t device: 5;
                uint16_t bus: 8;
        } bits;
 
        uint16_t raw;
};
 
struct acpi_mcfg {
        struct acpi_table_header header;
        uint64_t _reserved;
        struct acpi_mcfg_allocation pci_segs[];
} __packed;
 
uint32_t acpi_legacy_irq_get(pcie_bdf_t bdf);
 
int acpi_current_resource_get(char *dev_name, ACPI_RESOURCE **res);
 
int acpi_possible_resource_get(char *dev_name, ACPI_RESOURCE **res);
 
int acpi_current_resource_free(ACPI_RESOURCE *res);
 
int acpi_get_irq_routing_table(char *bus_name, ACPI_PCI_ROUTING_TABLE *rt_table, size_t rt_size);
 
ACPI_RESOURCE *acpi_resource_parse(ACPI_RESOURCE *res, int res_type);
 
struct acpi_dev *acpi_device_get(char *hid, int inst);
 
struct acpi_dev *acpi_device_by_index_get(int index);
 
static inline ACPI_RESOURCE_IRQ *acpi_irq_res_get(ACPI_RESOURCE *res_lst)
{
        ACPI_RESOURCE *res = acpi_resource_parse(res_lst, ACPI_RESOURCE_TYPE_IRQ);
 
        return res ? &res->Data.Irq : NULL;
}
 
int acpi_device_type_get(ACPI_RESOURCE *res);
 
void *acpi_table_get(char *signature, int inst);
 
int acpi_madt_entry_get(int type, struct acpi_subtable_header **tables, int *num_inst);
 
int acpi_dmar_entry_get(enum AcpiDmarType type,
        struct acpi_subtable_header **tables);
 
int acpi_drhd_get(enum AcpiDmarScopeType scope, struct acpi_dmar_device_scope *dev_scope,
        union acpi_dmar_id *dmar_id, int *num_inst, int max_inst);
 
struct acpi_madt_local_apic *acpi_local_apic_get(uint32_t cpu_num);
#endif