[PATCH 06/14] ACPICA: Detect GED device and keep track of _EVT

Rafael J. Wysocki
2023-07-10T17:23:45Z

From: Jose Marinho <jose.marinho@arm.com>

ACPICA commit dc6fd1d12903015726a8a6f87f63e86141576a68

The GED device is described by a _HID of ACPI0013.
This code traverses the namespace identifying all GED devices.
For each GED device in the namespace we record 1) the Interrupt objects
and the _EVT method.

This information is used when an interrupt is simulate.

Link: https://github.com/acpica/acpica/commit/dc6fd1d1
Signed-off-by: Jose Marinho <jose.marinho@arm.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
drivers/acpi/acpica/acglobal.h | 1 +
drivers/acpi/acpica/aclocal.h | 8 ++++++++
include/acpi/acnames.h | 1 +
3 files changed, 10 insertions(+)

diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h
index 778241173ed4..f4c90fc99be2 100644
--- a/drivers/acpi/acpica/acglobal.h
+++ b/drivers/acpi/acpica/acglobal.h
@@ -129,6 +129,7 @@ ACPI_GLOBAL(acpi_table_handler, acpi_gbl_table_handler);
ACPI_GLOBAL(void *, acpi_gbl_table_handler_context);
ACPI_GLOBAL(acpi_interface_handler, acpi_gbl_interface_handler);
ACPI_GLOBAL(struct acpi_sci_handler_info *, acpi_gbl_sci_handler_list);
+ACPI_GLOBAL(struct acpi_ged_handler_info *, acpi_gbl_ged_handler_list);

/* Owner ID support */

diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h
index 75a81b6c1a16..82563b44af35 100644
--- a/drivers/acpi/acpica/aclocal.h
+++ b/drivers/acpi/acpica/aclocal.h
@@ -543,6 +543,14 @@ struct acpi_field_info {
u32 pkg_length;
};

+/* Information about the interrupt ID and _EVT of a GED device */
+
+struct acpi_ged_handler_info {
+ struct acpi_ged_handler_info *next;
+ u32 int_id; /* The interrupt ID that triggers the execution ofthe evt_method. */
+ struct acpi_namespace_node *evt_method; /* The _EVT method to be executed when an interrupt with ID = int_ID is received */
+};
+
/*****************************************************************************
*
* Generic "state" object for stacks
diff --git a/include/acpi/acnames.h b/include/acpi/acnames.h
index d71291f25a80..76aa6aa346ba 100644
--- a/include/acpi/acnames.h
+++ b/include/acpi/acnames.h
@@ -22,6 +22,7 @@
#define METHOD_NAME__DDN "_DDN"
#define METHOD_NAME__DIS "_DIS"
#define METHOD_NAME__DMA "_DMA"
+#define METHOD_NAME__EVT "_EVT"
#define METHOD_NAME__HID "_HID"
#define METHOD_NAME__INI "_INI"
#define METHOD_NAME__PLD "_PLD"
--
2.35.3