i386: move kernel/acpi

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 0 insertions, 164 deletions

diff --git a/arch/i386/kernel/acpi/cstate.c b/arch/i386/kernel/acpi/cstate.c
deleted file mode 100644
index 2d39f55d29a8..000000000000
--- a/arch/i386/kernel/acpi/cstate.c
+++ /dev/null
@@ -1,164 +0,0 @@
-/*
- * arch/i386/kernel/acpi/cstate.c
- *
- * Copyright (C) 2005 Intel Corporation
- * 	Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
- * 	- Added _PDC for SMP C-states on Intel CPUs
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/acpi.h>
-#include <linux/cpu.h>
-#include <linux/sched.h>
-
-#include <acpi/processor.h>
-#include <asm/acpi.h>
-
-/*
- * Initialize bm_flags based on the CPU cache properties
- * On SMP it depends on cache configuration
- * - When cache is not shared among all CPUs, we flush cache
- *   before entering C3.
- * - When cache is shared among all CPUs, we use bm_check
- *   mechanism as in UP case
- *
- * This routine is called only after all the CPUs are online
- */
-void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
-					unsigned int cpu)
-{
-	struct cpuinfo_x86 *c = cpu_data + cpu;
-
-	flags->bm_check = 0;
-	if (num_online_cpus() == 1)
-		flags->bm_check = 1;
-	else if (c->x86_vendor == X86_VENDOR_INTEL) {
-		/*
-		 * Today all CPUs that support C3 share cache.
-		 * TBD: This needs to look at cache shared map, once
-		 * multi-core detection patch makes to the base.
-		 */
-		flags->bm_check = 1;
-	}
-}
-EXPORT_SYMBOL(acpi_processor_power_init_bm_check);
-
-/* The code below handles cstate entry with monitor-mwait pair on Intel*/
-
-struct cstate_entry {
-	struct {
-		unsigned int eax;
-		unsigned int ecx;
-	} states[ACPI_PROCESSOR_MAX_POWER];
-};
-static struct cstate_entry *cpu_cstate_entry;	/* per CPU ptr */
-
-static short mwait_supported[ACPI_PROCESSOR_MAX_POWER];
-
-#define MWAIT_SUBSTATE_MASK	(0xf)
-#define MWAIT_SUBSTATE_SIZE	(4)
-
-#define CPUID_MWAIT_LEAF (5)
-#define CPUID5_ECX_EXTENSIONS_SUPPORTED (0x1)
-#define CPUID5_ECX_INTERRUPT_BREAK	(0x2)
-
-#define MWAIT_ECX_INTERRUPT_BREAK	(0x1)
-
-#define NATIVE_CSTATE_BEYOND_HALT	(2)
-
-int acpi_processor_ffh_cstate_probe(unsigned int cpu,
-		struct acpi_processor_cx *cx, struct acpi_power_register *reg)
-{
-	struct cstate_entry *percpu_entry;
-	struct cpuinfo_x86 *c = cpu_data + cpu;
-
-	cpumask_t saved_mask;
-	int retval;
-	unsigned int eax, ebx, ecx, edx;
-	unsigned int edx_part;
-	unsigned int cstate_type; /* C-state type and not ACPI C-state type */
-	unsigned int num_cstate_subtype;
-
-	if (!cpu_cstate_entry || c->cpuid_level < CPUID_MWAIT_LEAF )
-		return -1;
-
-	if (reg->bit_offset != NATIVE_CSTATE_BEYOND_HALT)
-		return -1;
-
-	percpu_entry = per_cpu_ptr(cpu_cstate_entry, cpu);
-	percpu_entry->states[cx->index].eax = 0;
-	percpu_entry->states[cx->index].ecx = 0;
-
-	/* Make sure we are running on right CPU */
-	saved_mask = current->cpus_allowed;
-	retval = set_cpus_allowed(current, cpumask_of_cpu(cpu));
-	if (retval)
-		return -1;
-
-	cpuid(CPUID_MWAIT_LEAF, &eax, &ebx, &ecx, &edx);
-
-	/* Check whether this particular cx_type (in CST) is supported or not */
-	cstate_type = (cx->address >> MWAIT_SUBSTATE_SIZE) + 1;
-	edx_part = edx >> (cstate_type * MWAIT_SUBSTATE_SIZE);
-	num_cstate_subtype = edx_part & MWAIT_SUBSTATE_MASK;
-
-	retval = 0;
-	if (num_cstate_subtype < (cx->address & MWAIT_SUBSTATE_MASK)) {
-		retval = -1;
-		goto out;
-	}
-
-	/* mwait ecx extensions INTERRUPT_BREAK should be supported for C2/C3 */
-	if (!(ecx & CPUID5_ECX_EXTENSIONS_SUPPORTED) ||
-	    !(ecx & CPUID5_ECX_INTERRUPT_BREAK)) {
-		retval = -1;
-		goto out;
-	}
-	percpu_entry->states[cx->index].ecx = MWAIT_ECX_INTERRUPT_BREAK;
-
-	/* Use the hint in CST */
-	percpu_entry->states[cx->index].eax = cx->address;
-
-	if (!mwait_supported[cstate_type]) {
-		mwait_supported[cstate_type] = 1;
-		printk(KERN_DEBUG "Monitor-Mwait will be used to enter C-%d "
-		       "state\n", cx->type);
-	}
-
-out:
-	set_cpus_allowed(current, saved_mask);
-	return retval;
-}
-EXPORT_SYMBOL_GPL(acpi_processor_ffh_cstate_probe);
-
-void acpi_processor_ffh_cstate_enter(struct acpi_processor_cx *cx)
-{
-	unsigned int cpu = smp_processor_id();
-	struct cstate_entry *percpu_entry;
-
-	percpu_entry = per_cpu_ptr(cpu_cstate_entry, cpu);
-	mwait_idle_with_hints(percpu_entry->states[cx->index].eax,
-	                      percpu_entry->states[cx->index].ecx);
-}
-EXPORT_SYMBOL_GPL(acpi_processor_ffh_cstate_enter);
-
-static int __init ffh_cstate_init(void)
-{
-	struct cpuinfo_x86 *c = &boot_cpu_data;
-	if (c->x86_vendor != X86_VENDOR_INTEL)
-		return -1;
-
-	cpu_cstate_entry = alloc_percpu(struct cstate_entry);
-	return 0;
-}
-
-static void __exit ffh_cstate_exit(void)
-{
-	free_percpu(cpu_cstate_entry);
-	cpu_cstate_entry = NULL;
-}
-
-arch_initcall(ffh_cstate_init);
-__exitcall(ffh_cstate_exit);