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kernel/linux-imx6_3.14.28/arch/x86/xen/suspend.c 1.7 KB
6b13f685e   김민수   BSP 최초 추가
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  #include <linux/types.h>
  #include <linux/clockchips.h>
  
  #include <xen/interface/xen.h>
  #include <xen/grant_table.h>
  #include <xen/events.h>
  
  #include <asm/xen/hypercall.h>
  #include <asm/xen/page.h>
  #include <asm/fixmap.h>
  
  #include "xen-ops.h"
  #include "mmu.h"
  
  void xen_arch_pre_suspend(void)
  {
  	xen_start_info->store_mfn = mfn_to_pfn(xen_start_info->store_mfn);
  	xen_start_info->console.domU.mfn =
  		mfn_to_pfn(xen_start_info->console.domU.mfn);
  
  	BUG_ON(!irqs_disabled());
  
  	HYPERVISOR_shared_info = &xen_dummy_shared_info;
  	if (HYPERVISOR_update_va_mapping(fix_to_virt(FIX_PARAVIRT_BOOTMAP),
  					 __pte_ma(0), 0))
  		BUG();
  }
  
  void xen_arch_hvm_post_suspend(int suspend_cancelled)
  {
  #ifdef CONFIG_XEN_PVHVM
  	int cpu;
  	xen_hvm_init_shared_info();
  	xen_callback_vector();
  	xen_unplug_emulated_devices();
  	if (xen_feature(XENFEAT_hvm_safe_pvclock)) {
  		for_each_online_cpu(cpu) {
  			xen_setup_runstate_info(cpu);
  		}
  	}
  #endif
  }
  
  void xen_arch_post_suspend(int suspend_cancelled)
  {
  	xen_build_mfn_list_list();
  
  	xen_setup_shared_info();
  
  	if (suspend_cancelled) {
  		xen_start_info->store_mfn =
  			pfn_to_mfn(xen_start_info->store_mfn);
  		xen_start_info->console.domU.mfn =
  			pfn_to_mfn(xen_start_info->console.domU.mfn);
  	} else {
  #ifdef CONFIG_SMP
  		BUG_ON(xen_cpu_initialized_map == NULL);
  		cpumask_copy(xen_cpu_initialized_map, cpu_online_mask);
  #endif
  		xen_vcpu_restore();
  	}
  
  }
  
  static void xen_vcpu_notify_restore(void *data)
  {
  	unsigned long reason = (unsigned long)data;
  
  	/* Boot processor notified via generic timekeeping_resume() */
  	if ( smp_processor_id() == 0)
  		return;
  
  	clockevents_notify(reason, NULL);
  }
  
  void xen_arch_resume(void)
  {
  	on_each_cpu(xen_vcpu_notify_restore,
  		    (void *)CLOCK_EVT_NOTIFY_RESUME, 1);
  }