:github_url: https://github.com/nyx-org/gaia


.. _program_listing_file_dev_acpi_acpi.hpp:

Program Listing for File acpi.hpp
=================================

|exhale_lsh| :ref:`Return to documentation for file <file_dev_acpi_acpi.hpp>` (``dev/acpi/acpi.hpp``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   /* SPDX-License-Identifier: BSD-2-Clause */
   #pragma once
   #include <dev/devkit/service.hpp>
   #include <lai/core.h>
   #include <lib/charon.hpp>
   
   namespace Gaia::Dev {
   
   struct AcpiTable {
     struct [[gnu::packed]] {
       char signature[4];
       uint32_t length;
       uint8_t revision;
       uint8_t checksum;
       char oem_id[6];
       uint8_t oem_table_id[8];
       uint32_t oem_revision;
       char creator_id[4];
       uint32_t creator_revision;
     } header;
   };
   
   struct [[gnu::packed]] Rsdt : AcpiTable {
     uint32_t entry[];
   };
   
   struct [[gnu::packed]] Xsdt : AcpiTable {
     uint64_t entry[];
   };
   
   struct [[gnu::packed]] Rsdp {
     char signature[8];
     uint8_t checksum;
     char oem_id[6];
     uint8_t revision;
     uint32_t rsdt;
     uint32_t length;
     uint64_t xsdt;
     uint8_t ex_checksum;
     uint8_t reserved[3];
   };
   
   class AcpiPc : public Service {
   public:
     explicit AcpiPc(Charon charon);
   
     const char *class_name() override { return "AcpiPc"; }
     const char *name() override { return "AcpiPc0"; }
   
     void dump_tables();
     void load_drivers();
   
     frg::optional<AcpiTable *> find_table(frg::string_view signature);
   
     Charon &get_charon() { return charon; }
   
   private:
     template <typename F> void iterate(lai_nsnode_t *obj, F func);
     Rsdp *rsdp;
     AcpiTable *sdt;
     bool xsdt;
     Charon charon;
   };
   
   } // namespace Gaia::Dev