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Diffstat (limited to 'arch/x86_64/kernel/suspend.c')
-rw-r--r--arch/x86_64/kernel/suspend.c239
1 files changed, 0 insertions, 239 deletions
diff --git a/arch/x86_64/kernel/suspend.c b/arch/x86_64/kernel/suspend.c
deleted file mode 100644
index 6a5a98f2a75..00000000000
--- a/arch/x86_64/kernel/suspend.c
+++ /dev/null
@@ -1,239 +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/smp.h>
-#include <linux/suspend.h>
-#include <asm/proto.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/mtrr.h>
-
-/* References to section boundaries */
-extern const void __nosave_begin, __nosave_end;
-
-struct saved_context saved_context;
-
-unsigned long saved_context_eax, saved_context_ebx, saved_context_ecx, saved_context_edx;
-unsigned long saved_context_esp, saved_context_ebp, saved_context_esi, saved_context_edi;
-unsigned long saved_context_r08, saved_context_r09, saved_context_r10, saved_context_r11;
-unsigned long saved_context_r12, saved_context_r13, saved_context_r14, saved_context_r15;
-unsigned long saved_context_eflags;
-
-void __save_processor_state(struct saved_context *ctxt)
-{
- kernel_fpu_begin();
-
- /*
- * descriptor tables
- */
- asm volatile ("sgdt %0" : "=m" (ctxt->gdt_limit));
- asm volatile ("sidt %0" : "=m" (ctxt->idt_limit));
- asm volatile ("str %0" : "=m" (ctxt->tr));
-
- /* XMM0..XMM15 should be handled by kernel_fpu_begin(). */
- /*
- * segment registers
- */
- asm volatile ("movw %%ds, %0" : "=m" (ctxt->ds));
- asm volatile ("movw %%es, %0" : "=m" (ctxt->es));
- asm volatile ("movw %%fs, %0" : "=m" (ctxt->fs));
- asm volatile ("movw %%gs, %0" : "=m" (ctxt->gs));
- asm volatile ("movw %%ss, %0" : "=m" (ctxt->ss));
-
- rdmsrl(MSR_FS_BASE, ctxt->fs_base);
- rdmsrl(MSR_GS_BASE, ctxt->gs_base);
- rdmsrl(MSR_KERNEL_GS_BASE, ctxt->gs_kernel_base);
- mtrr_save_fixed_ranges(NULL);
-
- /*
- * control registers
- */
- rdmsrl(MSR_EFER, ctxt->efer);
- asm volatile ("movq %%cr0, %0" : "=r" (ctxt->cr0));
- asm volatile ("movq %%cr2, %0" : "=r" (ctxt->cr2));
- asm volatile ("movq %%cr3, %0" : "=r" (ctxt->cr3));
- asm volatile ("movq %%cr4, %0" : "=r" (ctxt->cr4));
- asm volatile ("movq %%cr8, %0" : "=r" (ctxt->cr8));
-}
-
-void save_processor_state(void)
-{
- __save_processor_state(&saved_context);
-}
-
-static void do_fpu_end(void)
-{
- /*
- * Restore FPU regs if necessary
- */
- kernel_fpu_end();
-}
-
-void __restore_processor_state(struct saved_context *ctxt)
-{
- /*
- * control registers
- */
- wrmsrl(MSR_EFER, ctxt->efer);
- asm volatile ("movq %0, %%cr8" :: "r" (ctxt->cr8));
- asm volatile ("movq %0, %%cr4" :: "r" (ctxt->cr4));
- asm volatile ("movq %0, %%cr3" :: "r" (ctxt->cr3));
- asm volatile ("movq %0, %%cr2" :: "r" (ctxt->cr2));
- asm volatile ("movq %0, %%cr0" :: "r" (ctxt->cr0));
-
- /*
- * now restore the descriptor tables to their proper values
- * ltr is done i fix_processor_context().
- */
- asm volatile ("lgdt %0" :: "m" (ctxt->gdt_limit));
- asm volatile ("lidt %0" :: "m" (ctxt->idt_limit));
-
- /*
- * segment registers
- */
- asm volatile ("movw %0, %%ds" :: "r" (ctxt->ds));
- asm volatile ("movw %0, %%es" :: "r" (ctxt->es));
- asm volatile ("movw %0, %%fs" :: "r" (ctxt->fs));
- load_gs_index(ctxt->gs);
- asm volatile ("movw %0, %%ss" :: "r" (ctxt->ss));
-
- wrmsrl(MSR_FS_BASE, ctxt->fs_base);
- wrmsrl(MSR_GS_BASE, ctxt->gs_base);
- wrmsrl(MSR_KERNEL_GS_BASE, ctxt->gs_kernel_base);
-
- fix_processor_context();
-
- do_fpu_end();
- mtrr_ap_init();
-}
-
-void restore_processor_state(void)
-{
- __restore_processor_state(&saved_context);
-}
-
-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 neccessary. But... This is neccessary, because 386 hardware has concept of busy TSS or some similar stupidity. */
-
- cpu_gdt(cpu)[GDT_ENTRY_TSS].type = 9;
-
- syscall_init(); /* This sets MSR_*STAR and related */
- load_TR_desc(); /* This does ltr */
- load_LDT(&current->active_mm->context); /* This does lldt */
-
- /*
- * Now maybe reload the debug registers
- */
- if (current->thread.debugreg7){
- loaddebug(&current->thread, 0);
- loaddebug(&current->thread, 1);
- loaddebug(&current->thread, 2);
- loaddebug(&current->thread, 3);
- /* no 4 and 5 */
- loaddebug(&current->thread, 6);
- loaddebug(&current->thread, 7);
- }
-
-}
-
-#ifdef CONFIG_SOFTWARE_SUSPEND
-/* Defined in arch/x86_64/kernel/suspend_asm.S */
-extern int restore_image(void);
-
-pgd_t *temp_level4_pgt;
-
-static int res_phys_pud_init(pud_t *pud, unsigned long address, unsigned long end)
-{
- long i, j;
-
- i = pud_index(address);
- pud = pud + i;
- for (; i < PTRS_PER_PUD; pud++, i++) {
- unsigned long paddr;
- pmd_t *pmd;
-
- paddr = address + i*PUD_SIZE;
- if (paddr >= end)
- break;
-
- pmd = (pmd_t *)get_safe_page(GFP_ATOMIC);
- if (!pmd)
- return -ENOMEM;
- set_pud(pud, __pud(__pa(pmd) | _KERNPG_TABLE));
- for (j = 0; j < PTRS_PER_PMD; pmd++, j++, paddr += PMD_SIZE) {
- unsigned long pe;
-
- if (paddr >= end)
- break;
- pe = _PAGE_NX | _PAGE_PSE | _KERNPG_TABLE | paddr;
- pe &= __supported_pte_mask;
- set_pmd(pmd, __pmd(pe));
- }
- }
- return 0;
-}
-
-static int set_up_temporary_mappings(void)
-{
- unsigned long start, end, next;
- int error;
-
- temp_level4_pgt = (pgd_t *)get_safe_page(GFP_ATOMIC);
- if (!temp_level4_pgt)
- return -ENOMEM;
-
- /* It is safe to reuse the original kernel mapping */
- set_pgd(temp_level4_pgt + pgd_index(__START_KERNEL_map),
- init_level4_pgt[pgd_index(__START_KERNEL_map)]);
-
- /* Set up the direct mapping from scratch */
- start = (unsigned long)pfn_to_kaddr(0);
- end = (unsigned long)pfn_to_kaddr(end_pfn);
-
- for (; start < end; start = next) {
- pud_t *pud = (pud_t *)get_safe_page(GFP_ATOMIC);
- if (!pud)
- return -ENOMEM;
- next = start + PGDIR_SIZE;
- if (next > end)
- next = end;
- if ((error = res_phys_pud_init(pud, __pa(start), __pa(next))))
- return error;
- set_pgd(temp_level4_pgt + pgd_index(start),
- mk_kernel_pgd(__pa(pud)));
- }
- return 0;
-}
-
-int swsusp_arch_resume(void)
-{
- int error;
-
- /* We have got enough memory and from now on we cannot recover */
- if ((error = set_up_temporary_mappings()))
- return error;
- 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);
-}
-#endif /* CONFIG_SOFTWARE_SUSPEND */
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