zircon/kernel/lib/acpi_lite/include/lib/acpi_lite/numa.h

// Copyright 2020 The Fuchsia Authors
//
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file or at
// https://opensource.org/licenses/MIT

#ifndef ZIRCON_KERNEL_LIB_ACPI_LITE_INCLUDE_LIB_ACPI_LITE_NUMA_H_
#define ZIRCON_KERNEL_LIB_ACPI_LITE_INCLUDE_LIB_ACPI_LITE_NUMA_H_

#include <lib/acpi_lite.h>
#include <lib/acpi_lite/structures.h>
#include <lib/fit/function.h>
#include <zircon/types.h>

namespace acpi_lite {

constexpr uint8_t kAcpiMaxNumaRegions = 5;

// A region of memory associated with a NUMA domain.
struct AcpiNumaRegion {
  uint64_t base_address;
  uint64_t length;
};

// A NUMA domain.
struct AcpiNumaDomain {
  uint32_t domain;
  AcpiNumaRegion memory[kAcpiMaxNumaRegions];
  uint8_t memory_count;
};

// Calls the given callback on all pairs of CPU APIC ID and NumaRegion.
zx_status_t EnumerateCpuNumaPairs(
    const AcpiSratTable* srat,
    const fit::inline_function<void(const AcpiNumaDomain&, uint32_t)>& callback);
zx_status_t EnumerateCpuNumaPairs(
    const AcpiParserInterface& parser,
    fit::inline_function<void(const AcpiNumaDomain&, uint32_t)> callback);

}  // namespace acpi_lite

#endif  // ZIRCON_KERNEL_LIB_ACPI_LITE_INCLUDE_LIB_ACPI_LITE_NUMA_H_