1 files changed, 39 insertions, 1 deletions

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index f421dd84f29d..b2b4d2ad7103 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -277,7 +277,7 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context);
 #define OSC_SB_PAD_SUPPORT              1
 #define OSC_SB_PPC_OST_SUPPORT          2
 #define OSC_SB_PR3_SUPPORT              4
-#define OSC_SB_CPUHP_OST_SUPPORT        8
+#define OSC_SB_HOTPLUG_OST_SUPPORT      8
 #define OSC_SB_APEI_SUPPORT             16
 
 extern bool osc_sb_apei_support_acked;
@@ -309,6 +309,44 @@ extern bool osc_sb_apei_support_acked;
 
 extern acpi_status acpi_pci_osc_control_set(acpi_handle handle,
                                              u32 *mask, u32 req);
+
+/* Enable _OST when all relevant hotplug operations are enabled */
+#if defined(CONFIG_ACPI_HOTPLUG_CPU) &&                 \
+        (defined(CONFIG_ACPI_HOTPLUG_MEMORY) ||         \
+         defined(CONFIG_ACPI_HOTPLUG_MEMORY_MODULE)) && \
+        (defined(CONFIG_ACPI_CONTAINER) ||              \
+         defined(CONFIG_ACPI_CONTAINER_MODULE))
+#define ACPI_HOTPLUG_OST
+#endif
+
+/* _OST Source Event Code (OSPM Action) */
+#define ACPI_OST_EC_OSPM_SHUTDOWN               0x100
+#define ACPI_OST_EC_OSPM_EJECT                  0x103
+#define ACPI_OST_EC_OSPM_INSERTION              0x200
+
+/* _OST General Processing Status Code */
+#define ACPI_OST_SC_SUCCESS                     0x0
+#define ACPI_OST_SC_NON_SPECIFIC_FAILURE        0x1
+#define ACPI_OST_SC_UNRECOGNIZED_NOTIFY         0x2
+
+/* _OST OS Shutdown Processing (0x100) Status Code */
+#define ACPI_OST_SC_OS_SHUTDOWN_DENIED          0x80
+#define ACPI_OST_SC_OS_SHUTDOWN_IN_PROGRESS     0x81
+#define ACPI_OST_SC_OS_SHUTDOWN_COMPLETED       0x82
+#define ACPI_OST_SC_OS_SHUTDOWN_NOT_SUPPORTED   0x83
+
+/* _OST Ejection Request (0x3, 0x103) Status Code */
+#define ACPI_OST_SC_EJECT_NOT_SUPPORTED         0x80
+#define ACPI_OST_SC_DEVICE_IN_USE               0x81
+#define ACPI_OST_SC_DEVICE_BUSY                 0x82
+#define ACPI_OST_SC_EJECT_DEPENDENCY_BUSY       0x83
+#define ACPI_OST_SC_EJECT_IN_PROGRESS           0x84
+
+/* _OST Insertion Request (0x200) Status Code */
+#define ACPI_OST_SC_INSERT_IN_PROGRESS          0x80
+#define ACPI_OST_SC_DRIVER_LOAD_FAILURE         0x81
+#define ACPI_OST_SC_INSERT_NOT_SUPPORTED        0x82
+
 extern void acpi_early_init(void);
 
 extern int acpi_nvs_register(__u64 start, __u64 size);