From mboxrd@z Thu Jan 1 00:00:00 1970 From: rajesh.shah-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org Subject: [patch 2/2] x86_64: Collect host bridge resources Date: Fri, 20 May 2005 17:42:41 -0700 Message-ID: <20050521004506.842235000@csdlinux-1> References: <20050521004239.581618000@csdlinux-1> Return-path: Content-Disposition: inline; filename=x86_64-host-bridge-resources.patch Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: ak-l3A5Bk7waGM@public.gmane.org, len.brown-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org, akpm-3NddpPZAyC0@public.gmane.org Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-pci-jyMamyUUXNJG4ohzP4jBZS1Fcj925eT/@public.gmane.org, acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org, Rajesh Shah List-Id: linux-acpi@vger.kernel.org This patch reads and stores host bridge resources reported by ACPI BIOS for x86_64 systems. This is needed since ACPI hotplug code now uses the PCI core for resource management. This patch simply adds the boot parameter (acpi=root_resources) to enable the functionality that is implemented in arch/i386. Signed-off-by: Rajesh Shah Index: linux-2.6.12-rc4-mm2/include/asm-x86_64/acpi.h =================================================================== --- linux-2.6.12-rc4-mm2.orig/include/asm-x86_64/acpi.h +++ linux-2.6.12-rc4-mm2/include/asm-x86_64/acpi.h @@ -143,10 +143,16 @@ static inline void acpi_disable_pci(void acpi_noirq_set(); } extern int acpi_irq_balance_set(char *str); +extern int acpi_read_root_resources; +static inline void acpi_set_read_root_resources(void) +{ + acpi_read_root_resources = 1; +} #else static inline void acpi_noirq_set(void) { } static inline void acpi_disable_pci(void) { } static inline int acpi_irq_balance_set(char *str) { return 0; } +static inline void acpi_set_read_root_resources(void) { } #endif #ifdef CONFIG_ACPI_SLEEP Index: linux-2.6.12-rc4-mm2/arch/x86_64/kernel/setup.c =================================================================== --- linux-2.6.12-rc4-mm2.orig/arch/x86_64/kernel/setup.c +++ linux-2.6.12-rc4-mm2/arch/x86_64/kernel/setup.c @@ -319,6 +319,9 @@ static __init void parse_cmdline_early ( acpi_disable_pci(); else if (!memcmp(from, "acpi=noirq", 10)) acpi_noirq_set(); + /* Use ACPI to read host bridge resources */ + else if (!memcmp(from, "acpi=root_resources", 19)) + acpi_set_read_root_resources(); else if (!memcmp(from, "acpi_sci=edge", 13)) acpi_sci_flags.trigger = 1; -- ------------------------------------------------------- This SF.Net email is sponsored by Oracle Space Sweepstakes Want to be the first software developer in space? Enter now for the Oracle Space Sweepstakes! http://ads.osdn.com/?ad_id=7412&alloc_id=16344&op=click