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pm: S5: update the system shutdown logical in ACRN

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For system S5, ACRN had assumption that SOS shutdown will trigger
system shutdown. So the system shutdown logical is:
   1. Trap SOS shutdown
   2. Wait for all other guest shutdown
   3. Shutdown system

The new logical is refined as:
   If all guest is shutdown, shutdown whole system

Tracked-On: #4270
Signed-off-by: Yin Fengwei <fengwei.yin@intel.com>
This commit is contained in:
Yin Fengwei
2019-12-12 15:06:20 +08:00
committed by wenlingz
parent 197e4a0620
commit bfa19e9104
4 changed files with 45 additions and 39 deletions
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12
hypervisor/arch/x86/pm.c
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@@ -148,9 +148,17 @@ void do_acpi_sx(const struct pm_s_state_data *sstate_data, uint32_t pm1a_cnt_val
} while ((s1 & (1U << BIT_WAK_STS)) == 0U);
}
void host_enter_s5(const struct pm_s_state_data *sstate_data, uint32_t pm1a_cnt_val, uint32_t pm1b_cnt_val)
static uint32_t system_pm1a_cnt_val, system_pm1b_cnt_val;
void save_s5_reg_val(uint32_t pm1a_cnt_val, uint32_t pm1b_cnt_val)
{
do_acpi_sx(sstate_data, pm1a_cnt_val, pm1b_cnt_val);
system_pm1a_cnt_val = pm1a_cnt_val;
system_pm1b_cnt_val = pm1b_cnt_val;
}
void shutdown_system(void)
{
struct pm_s_state_data *sx_data = get_host_sstate_data();
do_acpi_sx(sx_data, system_pm1a_cnt_val, system_pm1b_cnt_val);
}
static void suspend_tsc(__unused void *data)