i386: move power

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

5 files changed, 1 insertions, 386 deletions

diff --git a/arch/i386/Makefile b/arch/i386/Makefile
index 93492b37061c..da64799484a7 100644
--- a/arch/i386/Makefile
+++ b/arch/i386/Makefile
@@ -110,7 +110,7 @@ drivers-$(CONFIG_MATH_EMULATION)	+= arch/x86/math-emu/
 drivers-$(CONFIG_PCI)			+= arch/i386/pci/
 # must be linked after kernel/
 drivers-$(CONFIG_OPROFILE)		+= arch/i386/oprofile/
-drivers-$(CONFIG_PM)			+= arch/i386/power/
+drivers-$(CONFIG_PM)			+= arch/x86/power/
 drivers-$(CONFIG_FB)                    += arch/i386/video/
 
 CFLAGS += $(mflags-y)
diff --git a/arch/i386/power/Makefile b/arch/i386/power/Makefile
deleted file mode 100644
index d764ec950065..000000000000
--- a/arch/i386/power/Makefile
+++ /dev/null
@@ -1,2 +0,0 @@
-obj-$(CONFIG_PM)		+= cpu.o
-obj-$(CONFIG_HIBERNATION)	+= swsusp.o suspend.o
diff --git a/arch/i386/power/cpu.c b/arch/i386/power/cpu.c
deleted file mode 100644
index 998fd3ec0d68..000000000000
--- a/arch/i386/power/cpu.c
+++ /dev/null
@@ -1,133 +0,0 @@
-/*
- * Suspend support specific for i386.
- *
- * Distribute under GPLv2
- *
- * Copyright (c) 2002 Pavel Machek <pavel@suse.cz>
- * Copyright (c) 2001 Patrick Mochel <mochel@osdl.org>
- */
-
-#include <linux/module.h>
-#include <linux/suspend.h>
-#include <asm/mtrr.h>
-#include <asm/mce.h>
-
-static struct saved_context saved_context;
-
-unsigned long saved_context_ebx;
-unsigned long saved_context_esp, saved_context_ebp;
-unsigned long saved_context_esi, saved_context_edi;
-unsigned long saved_context_eflags;
-
-void __save_processor_state(struct saved_context *ctxt)
-{
-	mtrr_save_fixed_ranges(NULL);
-	kernel_fpu_begin();
-
-	/*
-	 * descriptor tables
-	 */
- 	store_gdt(&ctxt->gdt);
- 	store_idt(&ctxt->idt);
- 	store_tr(ctxt->tr);
-
-	/*
-	 * segment registers
-	 */
- 	savesegment(es, ctxt->es);
- 	savesegment(fs, ctxt->fs);
- 	savesegment(gs, ctxt->gs);
- 	savesegment(ss, ctxt->ss);
-
-	/*
-	 * control registers 
-	 */
-	ctxt->cr0 = read_cr0();
-	ctxt->cr2 = read_cr2();
-	ctxt->cr3 = read_cr3();
-	ctxt->cr4 = read_cr4();
-}
-
-void save_processor_state(void)
-{
-	__save_processor_state(&saved_context);
-}
-
-static void do_fpu_end(void)
-{
-	/*
-	 * Restore FPU regs if necessary.
-	 */
-	kernel_fpu_end();
-}
-
-static void fix_processor_context(void)
-{
-	int cpu = smp_processor_id();
-	struct tss_struct * t = &per_cpu(init_tss, cpu);
-
-	set_tss_desc(cpu,t);	/* This just modifies memory; should not be necessary. But... This is necessary, because 386 hardware has concept of busy TSS or some similar stupidity. */
-
-	load_TR_desc();				/* This does ltr */
-	load_LDT(&current->active_mm->context);	/* This does lldt */
-
-	/*
-	 * Now maybe reload the debug registers
-	 */
-	if (current->thread.debugreg[7]){
-		set_debugreg(current->thread.debugreg[0], 0);
-		set_debugreg(current->thread.debugreg[1], 1);
-		set_debugreg(current->thread.debugreg[2], 2);
-		set_debugreg(current->thread.debugreg[3], 3);
-		/* no 4 and 5 */
-		set_debugreg(current->thread.debugreg[6], 6);
-		set_debugreg(current->thread.debugreg[7], 7);
-	}
-
-}
-
-void __restore_processor_state(struct saved_context *ctxt)
-{
-	/*
-	 * control registers
-	 */
-	write_cr4(ctxt->cr4);
-	write_cr3(ctxt->cr3);
-	write_cr2(ctxt->cr2);
-	write_cr0(ctxt->cr0);
-
-	/*
-	 * now restore the descriptor tables to their proper values
-	 * ltr is done i fix_processor_context().
-	 */
- 	load_gdt(&ctxt->gdt);
- 	load_idt(&ctxt->idt);
-
-	/*
-	 * segment registers
-	 */
- 	loadsegment(es, ctxt->es);
- 	loadsegment(fs, ctxt->fs);
- 	loadsegment(gs, ctxt->gs);
- 	loadsegment(ss, ctxt->ss);
-
-	/*
-	 * sysenter MSRs
-	 */
-	if (boot_cpu_has(X86_FEATURE_SEP))
-		enable_sep_cpu();
-
-	fix_processor_context();
-	do_fpu_end();
-	mtrr_ap_init();
-	mcheck_init(&boot_cpu_data);
-}
-
-void restore_processor_state(void)
-{
-	__restore_processor_state(&saved_context);
-}
-
-/* Needed by apm.c */
-EXPORT_SYMBOL(save_processor_state);
-EXPORT_SYMBOL(restore_processor_state);
diff --git a/arch/i386/power/suspend.c b/arch/i386/power/suspend.c
deleted file mode 100644
index a0020b913f31..000000000000
--- a/arch/i386/power/suspend.c
+++ /dev/null
@@ -1,172 +0,0 @@
-/*
- * Suspend support specific for i386 - temporary page tables
- *
- * Distribute under GPLv2
- *
- * Copyright (c) 2006 Rafael J. Wysocki <rjw@sisk.pl>
- */
-
-#include <linux/suspend.h>
-#include <linux/bootmem.h>
-
-#include <asm/system.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-
-/* Defined in arch/i386/power/swsusp.S */
-extern int restore_image(void);
-
-/* References to section boundaries */
-extern const void __nosave_begin, __nosave_end;
-
-/* Pointer to the temporary resume page tables */
-pgd_t *resume_pg_dir;
-
-/* The following three functions are based on the analogous code in
- * arch/i386/mm/init.c
- */
-
-/*
- * Create a middle page table on a resume-safe page and put a pointer to it in
- * the given global directory entry.  This only returns the gd entry
- * in non-PAE compilation mode, since the middle layer is folded.
- */
-static pmd_t *resume_one_md_table_init(pgd_t *pgd)
-{
-	pud_t *pud;
-	pmd_t *pmd_table;
-
-#ifdef CONFIG_X86_PAE
-	pmd_table = (pmd_t *)get_safe_page(GFP_ATOMIC);
-	if (!pmd_table)
-		return NULL;
-
-	set_pgd(pgd, __pgd(__pa(pmd_table) | _PAGE_PRESENT));
-	pud = pud_offset(pgd, 0);
-
-	BUG_ON(pmd_table != pmd_offset(pud, 0));
-#else
-	pud = pud_offset(pgd, 0);
-	pmd_table = pmd_offset(pud, 0);
-#endif
-
-	return pmd_table;
-}
-
-/*
- * Create a page table on a resume-safe page and place a pointer to it in
- * a middle page directory entry.
- */
-static pte_t *resume_one_page_table_init(pmd_t *pmd)
-{
-	if (pmd_none(*pmd)) {
-		pte_t *page_table = (pte_t *)get_safe_page(GFP_ATOMIC);
-		if (!page_table)
-			return NULL;
-
-		set_pmd(pmd, __pmd(__pa(page_table) | _PAGE_TABLE));
-
-		BUG_ON(page_table != pte_offset_kernel(pmd, 0));
-
-		return page_table;
-	}
-
-	return pte_offset_kernel(pmd, 0);
-}
-
-/*
- * This maps the physical memory to kernel virtual address space, a total
- * of max_low_pfn pages, by creating page tables starting from address
- * PAGE_OFFSET.  The page tables are allocated out of resume-safe pages.
- */
-static int resume_physical_mapping_init(pgd_t *pgd_base)
-{
-	unsigned long pfn;
-	pgd_t *pgd;
-	pmd_t *pmd;
-	pte_t *pte;
-	int pgd_idx, pmd_idx;
-
-	pgd_idx = pgd_index(PAGE_OFFSET);
-	pgd = pgd_base + pgd_idx;
-	pfn = 0;
-
-	for (; pgd_idx < PTRS_PER_PGD; pgd++, pgd_idx++) {
-		pmd = resume_one_md_table_init(pgd);
-		if (!pmd)
-			return -ENOMEM;
-
-		if (pfn >= max_low_pfn)
-			continue;
-
-		for (pmd_idx = 0; pmd_idx < PTRS_PER_PMD; pmd++, pmd_idx++) {
-			if (pfn >= max_low_pfn)
-				break;
-
-			/* Map with big pages if possible, otherwise create
-			 * normal page tables.
-			 * NOTE: We can mark everything as executable here
-			 */
-			if (cpu_has_pse) {
-				set_pmd(pmd, pfn_pmd(pfn, PAGE_KERNEL_LARGE_EXEC));
-				pfn += PTRS_PER_PTE;
-			} else {
-				pte_t *max_pte;
-
-				pte = resume_one_page_table_init(pmd);
-				if (!pte)
-					return -ENOMEM;
-
-				max_pte = pte + PTRS_PER_PTE;
-				for (; pte < max_pte; pte++, pfn++) {
-					if (pfn >= max_low_pfn)
-						break;
-
-					set_pte(pte, pfn_pte(pfn, PAGE_KERNEL_EXEC));
-				}
-			}
-		}
-	}
-	return 0;
-}
-
-static inline void resume_init_first_level_page_table(pgd_t *pg_dir)
-{
-#ifdef CONFIG_X86_PAE
-	int i;
-
-	/* Init entries of the first-level page table to the zero page */
-	for (i = 0; i < PTRS_PER_PGD; i++)
-		set_pgd(pg_dir + i,
-			__pgd(__pa(empty_zero_page) | _PAGE_PRESENT));
-#endif
-}
-
-int swsusp_arch_resume(void)
-{
-	int error;
-
-	resume_pg_dir = (pgd_t *)get_safe_page(GFP_ATOMIC);
-	if (!resume_pg_dir)
-		return -ENOMEM;
-
-	resume_init_first_level_page_table(resume_pg_dir);
-	error = resume_physical_mapping_init(resume_pg_dir);
-	if (error)
-		return error;
-
-	/* We have got enough memory and from now on we cannot recover */
-	restore_image();
-	return 0;
-}
-
-/*
- *	pfn_is_nosave - check if given pfn is in the 'nosave' section
- */
-
-int pfn_is_nosave(unsigned long pfn)
-{
-	unsigned long nosave_begin_pfn = __pa_symbol(&__nosave_begin) >> PAGE_SHIFT;
-	unsigned long nosave_end_pfn = PAGE_ALIGN(__pa_symbol(&__nosave_end)) >> PAGE_SHIFT;
-	return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
-}
diff --git a/arch/i386/power/swsusp.S b/arch/i386/power/swsusp.S
deleted file mode 100644
index 53662e05b393..000000000000
--- a/arch/i386/power/swsusp.S
+++ /dev/null
@@ -1,78 +0,0 @@
-.text
-
-/* Originally gcc generated, modified by hand
- *
- * This may not use any stack, nor any variable that is not "NoSave":
- *
- * Its rewriting one kernel image with another. What is stack in "old"
- * image could very well be data page in "new" image, and overwriting
- * your own stack under you is bad idea.
- */
-
-#include <linux/linkage.h>
-#include <asm/segment.h>
-#include <asm/page.h>
-#include <asm/asm-offsets.h>
-
-	.text
-
-ENTRY(swsusp_arch_suspend)
-
-	movl %esp, saved_context_esp
-	movl %ebx, saved_context_ebx
-	movl %ebp, saved_context_ebp
-	movl %esi, saved_context_esi
-	movl %edi, saved_context_edi
-	pushfl ; popl saved_context_eflags
-
-	call swsusp_save
-	ret
-
-ENTRY(restore_image)
-	movl	resume_pg_dir, %ecx
-	subl	$__PAGE_OFFSET, %ecx
-	movl	%ecx, %cr3
-
-	movl	restore_pblist, %edx
-	.p2align 4,,7
-
-copy_loop:
-	testl	%edx, %edx
-	jz	done
-
-	movl	pbe_address(%edx), %esi
-	movl	pbe_orig_address(%edx), %edi
-
-	movl	$1024, %ecx
-	rep
-	movsl
-
-	movl	pbe_next(%edx), %edx
-	jmp	copy_loop
-	.p2align 4,,7
-
-done:
-	/* go back to the original page tables */
-	movl	$swapper_pg_dir, %ecx
-	subl	$__PAGE_OFFSET, %ecx
-	movl	%ecx, %cr3
-	/* Flush TLB, including "global" things (vmalloc) */
-	movl	mmu_cr4_features, %eax
-	movl	%eax, %edx
-	andl	$~(1<<7), %edx;  # PGE
-	movl	%edx, %cr4;  # turn off PGE
-	movl	%cr3, %ecx;  # flush TLB
-	movl	%ecx, %cr3
-	movl	%eax, %cr4;  # turn PGE back on
-
-	movl saved_context_esp, %esp
-	movl saved_context_ebp, %ebp
-	movl saved_context_ebx, %ebx
-	movl saved_context_esi, %esi
-	movl saved_context_edi, %edi
-
-	pushl saved_context_eflags ; popfl
-
-	xorl	%eax, %eax
-
-	ret