soc/intel: Refactor acpi_wake_source()

Change-Id: I44cb499260fdd0ea37308909a24cdf5ca1afa025
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49879
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/common/acpi_wake_source.c

@@ -17,23 +17,12 @@ __weak int soc_fill_acpi_wake(const struct chipset_power_state *ps, uint32_t *pm
 }
 
 /* Save wake source data for ACPI _SWS methods in NVS */
-static void acpi_save_wake_source(void *unused)
+static void pm_fill_gnvs(struct global_nvs *gnvs, const struct chipset_power_state *ps)
 {
-	struct global_nvs *gnvs = acpi_get_gnvs();
 	uint32_t pm1, *gpe0;
 	int gpe_reg, gpe_reg_count;
 	int reg_size = sizeof(uint32_t) * 8;
 
-	if (!gnvs)
-		return;
-
-	gnvs->pm1i = -1;
-	gnvs->gpei = -1;
-
-	const struct chipset_power_state *ps = acpi_get_pm_state();
-	if (!ps)
-		return;
-
 	gpe_reg_count = soc_fill_acpi_wake(ps, &pm1, &gpe0);
 	if (gpe_reg_count < 0)
 		return;
@@ -76,4 +65,20 @@ static void acpi_save_wake_source(void *unused)
 	       (long long)gnvs->pm1i, (long long)gnvs->gpei);
 }
 
+static void acpi_save_wake_source(void *unused)
+{
+	const struct chipset_power_state *ps;
+	struct global_nvs *gnvs = acpi_get_gnvs();
+	if (!gnvs)
+		return;
+
+	gnvs->pm1i = -1;
+	gnvs->gpei = -1;
+
+	if (acpi_pm_state_for_wake(&ps) < 0)
+		return;
+
+	pm_fill_gnvs(gnvs, ps);
+}
+
 BOOT_STATE_INIT_ENTRY(BS_OS_RESUME, BS_ON_ENTRY, acpi_save_wake_source, NULL);

src/soc/intel/common/block/acpi/acpi.c

@@ -195,7 +195,6 @@ uint32_t acpi_fill_soc_wake(uint32_t generic_pm1_en,
 	return generic_pm1_en;
 }
 
-#if CONFIG(SOC_INTEL_COMMON_ACPI_WAKE_SOURCE)
 /*
  * Save wake source information for calculating ACPI _SWS values
  *
@@ -228,7 +227,6 @@ static int acpi_fill_wake(const struct chipset_power_state *ps, uint32_t *pm1, u
 
 	return GPE0_REG_MAX;
 }
-#endif
 
 int common_calculate_power_ratio(int tdp, int p1_ratio, int ratio)
 {
@@ -441,25 +439,13 @@ void generate_cpu_entries(const struct device *device)
 	acpigen_write_processor_cnot(num_virt);
 }
 
-#if CONFIG(SOC_INTEL_COMMON_ACPI_WAKE_SOURCE)
 /* Save wake source data for ACPI _SWS methods in NVS */
-static void acpi_save_wake_source(void *unused)
+static void pm_fill_gnvs(struct global_nvs *gnvs, const struct chipset_power_state *ps)
 {
-	struct global_nvs *gnvs = acpi_get_gnvs();
 	uint32_t pm1, *gpe0;
 	int gpe_reg, gpe_reg_count;
 	int reg_size = sizeof(uint32_t) * 8;
 
-	if (!gnvs)
-		return;
-
-	gnvs->pm1i = -1;
-	gnvs->gpei = -1;
-
-	const struct chipset_power_state *ps = acpi_get_pm_state();
-	if (!ps)
-		return;
-
 	gpe_reg_count = acpi_fill_wake(ps, &pm1, &gpe0);
 	if (gpe_reg_count < 0)
 		return;
@@ -502,6 +488,23 @@ static void acpi_save_wake_source(void *unused)
 	       (long long)gnvs->pm1i, (long long)gnvs->gpei);
 }
 
-BOOT_STATE_INIT_ENTRY(BS_OS_RESUME, BS_ON_ENTRY, acpi_save_wake_source, NULL);
+static void acpi_save_wake_source(void *unused)
+{
+	if (!CONFIG(SOC_INTEL_COMMON_ACPI_WAKE_SOURCE))
+		return;
 
-#endif
+	const struct chipset_power_state *ps;
+	struct global_nvs *gnvs = acpi_get_gnvs();
+	if (!gnvs)
+		return;
+
+	gnvs->pm1i = -1;
+	gnvs->gpei = -1;
+
+	if (acpi_pm_state_for_wake(&ps) < 0)
+		return;
+
+	pm_fill_gnvs(gnvs, ps);
+}
+
+BOOT_STATE_INIT_ENTRY(BS_OS_RESUME, BS_ON_ENTRY, acpi_save_wake_source, NULL);

src/soc/intel/denverton_ns/include/soc/nvs.h

@@ -45,8 +45,12 @@ struct __packed global_nvs {
 	u64 mmiohl;	/* 0x4c - MMIO Base Limit */
 	u32 tsegb;	 /* 0x54 - TSEG Base Low */
 	u32 tsegl;	 /* 0x58 - TSEG Length/Size */
-	u8 rsvd3[164];
 
+	/* Just to satisfy common/block/acpi/acpi.c. */
+	u32 pm1i;
+	u32 gpei;
+
+	u8 rsvd3[156];
 };
 
 #endif /* _DENVERTON_NS_NVS_H_ */