From: "Rafael J. Wysocki" <rjw@rjwysocki.net>
To: Linux ACPI <linux-acpi@vger.kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>, Bob Moore <robert.moore@intel.com>
Subject: [PATCH 11/19] ACPICA: Add support for PCC Opregion special context data
Date: Wed, 22 Dec 2021 17:32:54 +0100 [thread overview]
Message-ID: <1900496.usQuhbGJ8B@kreacher> (raw)
In-Reply-To: <11889746.O9o76ZdvQC@kreacher>
From: Sudeep Holla <sudeep.holla@arm.com>
ACPICA commit 55526e8a6133cbf5a9cc0fb75a95dbbac6eb98e6
PCC Opregion added in ACPIC 6.3 requires special context data similar
to GPIO and Generic Serial Bus as it needs to know the internal PCC
buffer and its length as well as the PCC channel index when the opregion
handler is being executed by the OSPM.
Lets add support for the special context data needed by PCC Opregion.
Link: https://github.com/acpica/acpica/commit/55526e8a
Signed-off-by: Sudeep Holla <sudeep.holla@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/evregion.c | 10 ++++++++++
include/acpi/actypes.h | 8 ++++++++
2 files changed, 18 insertions(+)
diff --git a/drivers/acpi/acpica/evregion.c b/drivers/acpi/acpica/evregion.c
index 4ef43c8ef5e7..80b68f216b46 100644
--- a/drivers/acpi/acpica/evregion.c
+++ b/drivers/acpi/acpica/evregion.c
@@ -162,6 +162,16 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
return_ACPI_STATUS(AE_NOT_EXIST);
}
+ if (region_obj->region.space_id == ACPI_ADR_SPACE_PLATFORM_COMM) {
+ struct acpi_pcc_info *ctx =
+ handler_desc->address_space.context;
+
+ ctx->internal_buffer =
+ field_obj->field.internal_pcc_buffer;
+ ctx->length = region_obj->region.length;
+ ctx->subspace_id = region_obj->region.address;
+ }
+
/*
* We must exit the interpreter because the region setup will
* potentially execute control methods (for example, the _REG method
diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h
index 83a7ee1fbd7c..69e89d572b9e 100644
--- a/include/acpi/actypes.h
+++ b/include/acpi/actypes.h
@@ -1103,6 +1103,14 @@ struct acpi_connection_info {
u8 access_length;
};
+/* Special Context data for PCC Opregion (ACPI 6.3) */
+
+struct acpi_pcc_info {
+ u8 subspace_id;
+ u16 length;
+ u8 *internal_buffer;
+};
+
typedef
acpi_status (*acpi_adr_space_setup) (acpi_handle region_handle,
u32 function,
--
2.26.2
next prev parent reply other threads:[~2021-12-22 16:43 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-22 15:56 [PATCH 00/19] ACPICA: ACPICA 20211217 Rafael J. Wysocki
2021-12-22 15:57 ` [PATCH 01/19] ACPICA: actypes.h: Expand the ACPI_ACCESS_ definitions Rafael J. Wysocki
2021-12-22 16:21 ` [PATCH 02/19] ACPICA: Use original data_table_region pointer for accesses Rafael J. Wysocki
2021-12-22 16:22 ` [PATCH 03/19] ACPICA: Use original pointer for virtual origin tables Rafael J. Wysocki
2021-12-22 16:23 ` [PATCH 04/19] ACPICA: Macros: Remove ACPI_PHYSADDR_TO_PTR Rafael J. Wysocki
2021-12-22 16:24 ` [PATCH 05/19] ACPICA: Avoid subobject buffer overflow when validating RSDP signature Rafael J. Wysocki
2021-12-22 16:25 ` [PATCH 06/19] ACPICA: iASL/Disassembler: Additional support for NHLT table Rafael J. Wysocki
2021-12-22 16:28 ` [PATCH 07/19] ACPICA: Fix AEST Processor generic resource substructure data field byte length Rafael J. Wysocki
2021-12-22 16:29 ` [PATCH 08/19] ACPICA: Utilities: Avoid deleting the same object twice in a row Rafael J. Wysocki
2021-12-22 16:31 ` [PATCH 09/19] ACPICA: Executer: Fix the REFCLASS_REFOF case in acpi_ex_opcode_1A_0T_1R() Rafael J. Wysocki
2021-12-22 16:31 ` [PATCH 10/19] ACPICA: Fix wrong interpretation of PCC address Rafael J. Wysocki
2021-12-22 16:32 ` Rafael J. Wysocki [this message]
2021-12-22 16:33 ` [PATCH 12/19] ACPICA: Hardware: Do not flush CPU cache when entering S4 and S5 Rafael J. Wysocki
2021-12-22 16:35 ` [PATCH 14/19] ACPICA: Change a return_ACPI_STATUS (AE_BAD_PARAMETER) Rafael J. Wysocki
2021-12-22 16:35 ` [PATCH 15/19] ACPICA: Fixed a couple of warnings under MSVC Rafael J. Wysocki
2021-12-22 16:36 ` [PATCH 16/19] ACPICA: iASL: Add TDEL table to both compiler/disassembler Rafael J. Wysocki
2021-12-22 16:37 ` [PATCH 17/19] ACPICA: iASL: Add suppport for AGDI table Rafael J. Wysocki
2021-12-22 16:37 ` [PATCH 18/19] ACPICA: iASL/NHLT table: "Specific Data" field support Rafael J. Wysocki
2021-12-22 16:38 ` [PATCH 19/19] ACPICA: Update version to 20211217 Rafael J. Wysocki
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