diff options
Diffstat (limited to 'arch/i386/power')
| -rw-r--r-- | arch/i386/power/Makefile | 2 | ||||
| -rw-r--r-- | arch/i386/power/cpu.c | 132 | ||||
| -rw-r--r-- | arch/i386/power/swsusp.S | 73 |
3 files changed, 0 insertions, 207 deletions
diff --git a/arch/i386/power/Makefile b/arch/i386/power/Makefile deleted file mode 100644 index 8cfa4e8a719..00000000000 --- a/arch/i386/power/Makefile +++ /dev/null @@ -1,2 +0,0 @@ -obj-$(CONFIG_PM) += cpu.o -obj-$(CONFIG_SOFTWARE_SUSPEND) += swsusp.o diff --git a/arch/i386/power/cpu.c b/arch/i386/power/cpu.c deleted file mode 100644 index 5a1abeff033..00000000000 --- a/arch/i386/power/cpu.c +++ /dev/null @@ -1,132 +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) -{ - kernel_fpu_begin(); - - /* - * descriptor tables - */ - store_gdt(&ctxt->gdt_limit); - store_idt(&ctxt->idt_limit); - 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(¤t->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_limit); - load_idt(&ctxt->idt_limit); - - /* - * 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/swsusp.S b/arch/i386/power/swsusp.S deleted file mode 100644 index 8a2b50a0aaa..00000000000 --- a/arch/i386/power/swsusp.S +++ /dev/null @@ -1,73 +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(swsusp_arch_resume) - movl $swsusp_pg_dir-__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: - /* 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 |