From patchwork Sun Jun 9 23:01:38 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Garrett X-Patchwork-Id: 2695391 Return-Path: X-Original-To: patchwork-linux-acpi@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id 560773FC23 for ; Sun, 9 Jun 2013 23:02:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752348Ab3FIXCB (ORCPT ); Sun, 9 Jun 2013 19:02:01 -0400 Received: from cavan.codon.org.uk ([93.93.128.6]:45797 "EHLO cavan.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751940Ab3FIXB7 (ORCPT ); Sun, 9 Jun 2013 19:01:59 -0400 Received: from x230.codon.org.uk ([2001:470:1f07:1371:6267:20ff:fec3:2318] helo=x230.lan) by cavan.codon.org.uk with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.72) (envelope-from ) id 1UlocS-0005AN-CQ; Mon, 10 Jun 2013 00:01:52 +0100 From: Matthew Garrett To: linux-acpi@vger.kernel.org Cc: seth.forshee@canonical.com, joeyli.kernel@gmail.com, daniel.vetter@ffwll.ch, intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, lenb@kernel.org, rjw@sisk.pl, Matthew Garrett Subject: [PATCH 2/3] ACPICA: Add interface for getting latest OS version requested via _OSI Date: Sun, 9 Jun 2013 19:01:38 -0400 Message-Id: <1370818899-8595-3-git-send-email-matthew.garrett@nebula.com> X-Mailer: git-send-email 1.8.2.1 In-Reply-To: <1370818899-8595-1-git-send-email-matthew.garrett@nebula.com> References: <1370818899-8595-1-git-send-email-matthew.garrett@nebula.com> X-SA-Do-Not-Run: Yes X-SA-Exim-Connect-IP: 2001:470:1f07:1371:6267:20ff:fec3:2318 X-SA-Exim-Mail-From: matthew.garrett@nebula.com X-SA-Exim-Scanned: No (on cavan.codon.org.uk); SAEximRunCond expanded to false Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org Drivers may need to make policy decisions based on the OS that the firmware believes it's interacting with. ACPI firmware will make a series of _OSI calls, starting from the oldest OS version they support and ending with the most recent. Add a function to return the last successful call so that drivers know what the firmware's expecting. Based on a patch by Seth Forshee Signed-off-by: Matthew Garrett Cc: Seth Forshee --- drivers/acpi/acpica/aclocal.h | 13 ------------- drivers/acpi/acpica/utxface.c | 19 +++++++++++++++++++ include/acpi/acpixf.h | 22 ++++++++++++++++++++++ 3 files changed, 41 insertions(+), 13 deletions(-) diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h index d5bfbd3..8a2f532 100644 --- a/drivers/acpi/acpica/aclocal.h +++ b/drivers/acpi/acpica/aclocal.h @@ -948,19 +948,6 @@ struct acpi_bit_register_info { /* Structs and definitions for _OSI support and I/O port validation */ -#define ACPI_OSI_WIN_2000 0x01 -#define ACPI_OSI_WIN_XP 0x02 -#define ACPI_OSI_WIN_XP_SP1 0x03 -#define ACPI_OSI_WINSRV_2003 0x04 -#define ACPI_OSI_WIN_XP_SP2 0x05 -#define ACPI_OSI_WINSRV_2003_SP1 0x06 -#define ACPI_OSI_WIN_VISTA 0x07 -#define ACPI_OSI_WINSRV_2008 0x08 -#define ACPI_OSI_WIN_VISTA_SP1 0x09 -#define ACPI_OSI_WIN_VISTA_SP2 0x0A -#define ACPI_OSI_WIN_7 0x0B -#define ACPI_OSI_WIN_8 0x0C - #define ACPI_ALWAYS_ILLEGAL 0x00 struct acpi_interface_info { diff --git a/drivers/acpi/acpica/utxface.c b/drivers/acpi/acpica/utxface.c index 6505774..c1638c3 100644 --- a/drivers/acpi/acpica/utxface.c +++ b/drivers/acpi/acpica/utxface.c @@ -389,6 +389,25 @@ ACPI_EXPORT_SYMBOL(acpi_install_interface_handler) /***************************************************************************** * + * FUNCTION: acpi_osi_version + * + * PARAMETERS: None + * + * RETURN: Last OS version requested via _OSI + * + * DESCRIPTION: Returns the argument to the most recent _OSI query performed + * by the firmware + * + ****************************************************************************/ +u8 acpi_osi_version(void) +{ + return acpi_gbl_osi_data; +} + +ACPI_EXPORT_SYMBOL(acpi_osi_version) + +/***************************************************************************** + * * FUNCTION: acpi_check_address_range * * PARAMETERS: space_id - Address space ID diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h index 454881e..41d3ac1 100644 --- a/include/acpi/acpixf.h +++ b/include/acpi/acpixf.h @@ -82,6 +82,22 @@ extern u8 acpi_gbl_truncate_io_addresses; extern u8 acpi_gbl_disable_auto_repair; /* + * Values returned by acpi_osi_version() + */ +#define ACPI_OSI_WIN_2000 0x01 +#define ACPI_OSI_WIN_XP 0x02 +#define ACPI_OSI_WIN_XP_SP1 0x03 +#define ACPI_OSI_WINSRV_2003 0x04 +#define ACPI_OSI_WIN_XP_SP2 0x05 +#define ACPI_OSI_WINSRV_2003_SP1 0x06 +#define ACPI_OSI_WIN_VISTA 0x07 +#define ACPI_OSI_WINSRV_2008 0x08 +#define ACPI_OSI_WIN_VISTA_SP1 0x09 +#define ACPI_OSI_WIN_VISTA_SP2 0x0A +#define ACPI_OSI_WIN_7 0x0B +#define ACPI_OSI_WIN_8 0x0C + +/* * Hardware-reduced prototypes. All interfaces that use these macros will * be configured out of the ACPICA build if the ACPI_REDUCED_HARDWARE flag * is set to TRUE. @@ -307,6 +323,12 @@ acpi_status acpi_install_notify_handler(acpi_handle device, u32 handler_type, acpi_notify_handler handler, void *context); +#ifdef CONFIG_ACPI +u8 acpi_osi_version(void); +#else +static inline u8 acpi_osi_version(void) { return 0; } +#endif + acpi_status acpi_remove_notify_handler(acpi_handle device, u32 handler_type, acpi_notify_handler handler);