[net-next-2.6.git] / arch / ia64 / kernel / acpi-processor.c

/*
 * arch/ia64/kernel/acpi-processor.c
 *
 * Copyright (C) 2005 Intel Corporation
 * 	Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
 * 	- Added _PDC for platforms with Intel CPUs
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/acpi.h>

#include <acpi/processor.h>
#include <asm/acpi.h>

static void init_intel_pdc(struct acpi_processor *pr)
{
	struct acpi_object_list *obj_list;
	union acpi_object *obj;
	u32 *buf;

	/* allocate and initialize pdc. It will be used later. */
	obj_list = kmalloc(sizeof(struct acpi_object_list), GFP_KERNEL);
	if (!obj_list) {
		printk(KERN_ERR "Memory allocation error\n");
		return;
	}

	obj = kmalloc(sizeof(union acpi_object), GFP_KERNEL);
	if (!obj) {
		printk(KERN_ERR "Memory allocation error\n");
		kfree(obj_list);
		return;
	}

	buf = kmalloc(12, GFP_KERNEL);
	if (!buf) {
		printk(KERN_ERR "Memory allocation error\n");
		kfree(obj);
		kfree(obj_list);
		return;
	}

	buf[0] = ACPI_PDC_REVISION_ID;
	buf[1] = 1;
	buf[2] |= ACPI_PDC_EST_CAPABILITY_SMP;

	obj->type = ACPI_TYPE_BUFFER;
	obj->buffer.length = 12;
	obj->buffer.pointer = (u8 *) buf;
	obj_list->count = 1;
	obj_list->pointer = obj;
	pr->pdc = obj_list;

	return;
}

/* Initialize _PDC data based on the CPU vendor */
void arch_acpi_processor_init_pdc(struct acpi_processor *pr)
{
	pr->pdc = NULL;
	init_intel_pdc(pr);
	return;
}

EXPORT_SYMBOL(arch_acpi_processor_init_pdc);
Commit	Line	Data
05131ecc	1	/*
f30c2269	2	* arch/ia64/kernel/acpi-processor.c
05131ecc VP	3	*
	4	* Copyright (C) 2005 Intel Corporation
	5	* Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
	6	* - Added _PDC for platforms with Intel CPUs
	7	*/
	8
	9	#include <linux/kernel.h>
	10	#include <linux/module.h>
	11	#include <linux/init.h>
	12	#include <linux/acpi.h>
	13
	14	#include <acpi/processor.h>
	15	#include <asm/acpi.h>
	16
	17	static void init_intel_pdc(struct acpi_processor *pr)
	18	{
	19	struct acpi_object_list *obj_list;
	20	union acpi_object *obj;
	21	u32 *buf;
	22
	23	/* allocate and initialize pdc. It will be used later. */
	24	obj_list = kmalloc(sizeof(struct acpi_object_list), GFP_KERNEL);
	25	if (!obj_list) {
	26	printk(KERN_ERR "Memory allocation error\n");
	27	return;
	28	}
	29
	30	obj = kmalloc(sizeof(union acpi_object), GFP_KERNEL);
	31	if (!obj) {
	32	printk(KERN_ERR "Memory allocation error\n");
	33	kfree(obj_list);
	34	return;
	35	}
	36
	37	buf = kmalloc(12, GFP_KERNEL);
	38	if (!buf) {
	39	printk(KERN_ERR "Memory allocation error\n");
	40	kfree(obj);
	41	kfree(obj_list);
	42	return;
	43	}
	44
	45	buf[0] = ACPI_PDC_REVISION_ID;
	46	buf[1] = 1;
	47	buf[2] \|= ACPI_PDC_EST_CAPABILITY_SMP;
	48
	49	obj->type = ACPI_TYPE_BUFFER;
	50	obj->buffer.length = 12;
	51	obj->buffer.pointer = (u8 *) buf;
	52	obj_list->count = 1;
	53	obj_list->pointer = obj;
	54	pr->pdc = obj_list;
	55
	56	return;
	57	}
	58
	59	/* Initialize _PDC data based on the CPU vendor */
	60	void arch_acpi_processor_init_pdc(struct acpi_processor *pr)
	61	{
	62	pr->pdc = NULL;
	63	init_intel_pdc(pr);
	64	return;
	65	}
	66
67	EXPORT_SYMBOL(arch_acpi_processor_init_pdc);