GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
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+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
+ */
+
+#ifndef __ASM_ACPI_H__
+#define __ASM_ACPI_H__
+
+struct acpi_fadt;
+
+/**
+ * acpi_find_fadt() - find ACPI FADT table in the system memory
+ *
+ * This routine parses the ACPI table to locate the ACPI FADT table.
+ *
+ * @return:	a pointer to the ACPI FADT table in the system memory
+ */
+struct acpi_fadt *acpi_find_fadt(void);
+
+/**
+ * acpi_find_wakeup_vector() - find OS installed wake up vector address
+ *
+ * This routine parses the ACPI table to locate the wake up vector installed
+ * by the OS previously.
+ *
+ * @fadt:	a pointer to the ACPI FADT table in the system memory
+ * @return:	wake up vector address installed by the OS
+ */
+void *acpi_find_wakeup_vector(struct acpi_fadt *fadt);
+
+/**
+ * enter_acpi_mode() - enter into ACPI mode
+ *
+ * This programs the ACPI-defined PM1_CNT register to enable SCI interrupt
+ * so that the whole system swiches to ACPI mode.
+ *
+ * @pm1_cnt:	PM1_CNT register I/O address
+ */
+void enter_acpi_mode(int pm1_cnt);
+
+#endif /* __ASM_ACPI_H__ */