Messages in this thread Patch in this message | | | Date | Fri, 20 May 2005 17:42:41 -0700 | From | rajesh.shah@intel ... | Subject | [patch 2/2] x86_64: Collect host bridge resources |
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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 <rajesh.shah@intel.com>
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; -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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