refactor archHEADmain

1 files changed, 177 insertions, 0 deletions

diff --git a/include/sys/acpi.h b/include/sys/acpi.h
new file mode 100644
index 0000000..97eeab9
--- /dev/null
+++ b/include/sys/acpi.h
@@ -0,0 +1,177 @@
+#pragma once
+
+#include <stdint.h>
+
+#ifndef ACPI_INTERNAL
+	#error "Do not include <sys/acpi.h>, only use <acpi.h>"
+#endif
+
+struct acpi_header {
+	uint32_t signature;
+	uint32_t length;
+	uint8_t revision;
+	uint8_t checksum;
+	uint8_t oem_id[6];
+	uint8_t oem_table_id[8];
+	uint32_t oem_revision;
+	uint32_t creator_id;
+	uint32_t creator_revision;
+} __attribute__((packed));
+
+// root system descriptor pointer
+// ACPI 1.0
+struct rsdp {
+	uint8_t signature[8];
+	uint8_t checksum;
+	uint8_t oemid[6];
+	uint8_t revision;
+	uint32_t rsdt_addr;
+} __attribute__((packed));
+
+// eXtended system descriptor pointer
+// ACPI 2.0
+struct xsdp {
+	char signature[8];
+	uint8_t checksum;
+	char oemid[6];
+	uint8_t revision;
+	uint32_t rsdt_addr;
+	uint32_t length;
+	uint64_t xsdt_addr;
+	uint8_t extendeid_checksum;
+	uint8_t reserved[3];
+} __attribute__((packed));
+
+// root system descriptor table
+// ACPI 1.0
+struct rsdt {
+	struct acpi_header h;
+	uint32_t sdt_pointers[];
+} __attribute__((packed));
+
+// eXtended system descriptor table
+// ACPI 2.0
+struct xsdt {
+	struct acpi_header h;
+	uint64_t sdt_pointers[];
+} __attribute__((packed));
+
+
+// generic address structure
+struct gas {
+	uint8_t address_space;
+	uint8_t bit_width;
+	uint8_t bit_offset;
+	uint8_t access_size;
+	uint64_t address;
+};
+
+// differentiated system description table
+struct dsdt {
+	struct acpi_header h;
+	char s5_addr[];
+} __attribute__((packed));
+
+struct apic {
+	struct acpi_header h;
+	// todo
+} __attribute__((packed));
+
+struct hept {
+	struct acpi_header h;
+	// todo
+} __attribute__((packed));
+
+struct waet {
+	struct acpi_header h;
+	// todo
+} __attribute__((packed));
+
+// fixed acpi description table
+struct fadt {
+	struct acpi_header h;
+	uint32_t firmware_ctrl;
+	uint32_t dsdt;
+
+	// field used in ACPI 1.0; no longer in use, for compatibility only
+	uint8_t  reserved;
+
+	uint8_t  preferred_power_management_profile;
+	uint16_t sci_interrupt;
+	uint32_t smi_command_port;
+	uint8_t  acpi_enable;
+	uint8_t  acpi_disable;
+	uint8_t  s4bios_req;
+	uint8_t  pstate_control;
+	uint32_t pm1_a_event_block;
+	uint32_t pm1_b_event_block;
+	uint32_t pm1_a_control_block;
+	uint32_t pm1_b_control_block;
+	uint32_t pm2_control_block;
+	uint32_t pm_timer_block;
+	uint32_t gpe0_block;
+	uint32_t gpe1_block;
+	uint8_t  pm1_event_length;
+	uint8_t  pm1_control_length;
+	uint8_t  pm2_control_length;
+	uint8_t  pm_timer_length;
+	uint8_t  gpe0_length;
+	uint8_t  gpe1_length;
+	uint8_t  gpe1_base;
+	uint8_t  cstate_control;
+	uint16_t worst_c2_latency;
+	uint16_t worst_c3_latency;
+	uint16_t flush_size;
+	uint16_t flush_stride;
+	uint8_t  duty_offset;
+	uint8_t  duty_width;
+	uint8_t  day_alarm;
+	uint8_t  month_alarm;
+	uint8_t  century;
+
+	// reserved in ACPI 1.0; used since ACPI 2.0+
+	uint16_t boot_architecture_flags;
+
+	uint8_t  reserved_2;
+	uint32_t flags;
+
+	// 12 byte structure; see below for details
+	struct gas reset_reg;
+
+	uint8_t  reset_value;
+	uint8_t  reserved_3[3];
+
+	// 64bit pointers - Available on ACPI 2.0+
+	uint64_t x_firmware_control;
+	uint64_t x_dsdt;
+
+	struct gas x_pm1_a_event_block;
+	struct gas x_pm1_b_event_block;
+	struct gas x_pm1_a_control_block;
+	struct gas x_pm1_b_control_block;
+	struct gas x_pm2_control_block;
+	struct gas x_pm_timer_block;
+	struct gas x_gpe0_block;
+	struct gas x_gpe1_block;
+} __attribute__((packed));
+
+struct acpi_state {
+	union {
+		struct xsdt *xsdt;
+		struct rsdt *rsdt;
+	} sdt;
+	struct fadt *fadt;
+	struct dsdt *dsdt;
+	struct apic *apic;
+	struct hept *hept;
+	struct waet *waet;
+	uint8_t version;
+
+	uint16_t SLP_TYPa;
+	uint16_t SLP_TYPb;
+	uint16_t SLP_EN;
+	uint16_t SCI_EN;
+};
+
+void acpi_sys_enable(struct acpi_state *state);
+int acpi_sys_shutdown(struct acpi_state *state);