Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758951AbcDHVAg (ORCPT ); Fri, 8 Apr 2016 17:00:36 -0400 Received: from mail-pf0-f173.google.com ([209.85.192.173]:33946 "EHLO mail-pf0-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752950AbcDHVAe (ORCPT ); Fri, 8 Apr 2016 17:00:34 -0400 MIME-Version: 1.0 From: hotran To: "Rafael J. Wysocki" , Len Brown , Robert Moore , Lv Zheng , linux-acpi@vger.kernel.org, devel@acpica.org, linux-kernel@vger.kernel.org Cc: lho@apm.com, hotran@apm.com, dhdang@apm.com Subject: [PATCH] ACPICA: ACPI 6.1: Add PCC HW-Reduced Communication Subspace Type 2 Date: Fri, 8 Apr 2016 14:00:05 -0700 Message-Id: <1460149205-10502-1-git-send-email-hotran@apm.com> X-Mailer: git-send-email 1.9.1 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1931 Lines: 56 ACPI 6.1 PCC has a HW-Reduced Communication Subspace Type 2 intended for using on HW-Reduce ACPI Platform, which requires read-modify-write sequence to acknowledge doorbell interrupt. This patch adds the Communication Subspace Type 2. Signed-off-by: Hoan Tran --- include/acpi/actbl3.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/include/acpi/actbl3.h b/include/acpi/actbl3.h index ddf5e66..5937075 100644 --- a/include/acpi/actbl3.h +++ b/include/acpi/actbl3.h @@ -476,7 +476,8 @@ struct acpi_table_pcct { enum acpi_pcct_type { ACPI_PCCT_TYPE_GENERIC_SUBSPACE = 0, ACPI_PCCT_TYPE_HW_REDUCED_SUBSPACE = 1, - ACPI_PCCT_TYPE_RESERVED = 2 /* 2 and greater are reserved */ + ACPI_PCCT_TYPE_HW_REDUCED_SUBSPACE_TYPE2 = 2, + ACPI_PCCT_TYPE_RESERVED = 3 /* 3 and greater are reserved */ }; /* @@ -498,7 +499,7 @@ struct acpi_pcct_subspace { u16 min_turnaround_time; }; -/* 1: HW-reduced Communications Subspace (ACPI 5.1) */ +/* 1 or 2: HW-reduced Communications Subspace (ACPI 6.1) */ struct acpi_pcct_hw_reduced { struct acpi_subtable_header header; @@ -513,6 +514,9 @@ struct acpi_pcct_hw_reduced { u32 latency; u32 max_access_rate; u16 min_turnaround_time; + struct acpi_generic_address doorbell_ack_register; + u64 ack_preserve_mask; + u64 ack_write_mask; }; /* Values for doorbell flags above */ -- 1.9.1 -- CONFIDENTIALITY NOTICE: This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and contains information that is confidential and proprietary to Applied Micro Circuits Corporation or its subsidiaries. It is to be used solely for the purpose of furthering the parties' business relationship. All unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message.