Merge branches 'acpi-soc', 'acpi-battery', 'acpi-video', 'acpi-cppc' and 'acpi-apei'

* acpi-soc:
  ACPI / LPSS: enable hard LLP for DMA
  ACPI / APD: Add clock frequency for future AMD I2C controller

* acpi-battery:
  ACPI / battery: If _BIX fails, retry with _BIF

* acpi-video:
  ACPI / video: Add force_native quirk for HP Pavilion dv6
  ACPI / video: Add force_native quirk for Dell XPS 17 L702X
  ACPI / video: Move ACPI_VIDEO_NOTIFY_* defines to acpi/video.h

* acpi-cppc:
  ACPI / CPPC: set an error code on probe error path

* acpi-apei:
  ACPI / APEI / ARM64: APEI initial support for ARM64
  ACPI / APEI: Fix NMI notification handling

arch/arm64/Kconfig

@@ -52,6 +52,7 @@ config ARM64
 	select GENERIC_TIME_VSYSCALL
 	select HANDLE_DOMAIN_IRQ
 	select HARDIRQS_SW_RESEND
+	select HAVE_ACPI_APEI if (ACPI && EFI)
 	select HAVE_ALIGNED_STRUCT_PAGE if SLUB
 	select HAVE_ARCH_AUDITSYSCALL
 	select HAVE_ARCH_BITREVERSE

arch/arm64/include/asm/acpi.h

@@ -17,6 +17,7 @@
 
 #include <asm/cputype.h>
 #include <asm/smp_plat.h>
+#include <asm/tlbflush.h>
 
 /* Macros for consistency checks of the GICC subtable of MADT */
 #define ACPI_MADT_GICC_LENGTH	\
@@ -114,8 +115,28 @@ static inline const char *acpi_get_enable_method(int cpu)
 }
 
 #ifdef	CONFIG_ACPI_APEI
+/*
+ * acpi_disable_cmcff is used in drivers/acpi/apei/hest.c for disabling
+ * IA-32 Architecture Corrected Machine Check (CMC) Firmware-First mode
+ * with a kernel command line parameter "acpi=nocmcoff". But we don't
+ * have this IA-32 specific feature on ARM64, this definition is only
+ * for compatibility.
+ */
+#define acpi_disable_cmcff 1
 pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr);
-#endif
+
+/*
+ * Despite its name, this function must still broadcast the TLB
+ * invalidation in order to ensure other CPUs don't end up with junk
+ * entries as a result of speculation. Unusually, its also called in
+ * IRQ context (ghes_iounmap_irq) so if we ever need to use IPIs for
+ * TLB broadcasting, then we're in trouble here.
+ */
+static inline void arch_apei_flush_tlb_one(unsigned long addr)
+{
+	flush_tlb_kernel_range(addr, addr + PAGE_SIZE);
+}
+#endif /* CONFIG_ACPI_APEI */
 
 #ifdef CONFIG_ACPI_NUMA
 int arm64_acpi_numa_init(void);

arch/x86/kernel/acpi/apei.c

@@ -24,9 +24,6 @@ int arch_apei_enable_cmcff(struct acpi_hest_header *hest_hdr, void *data)
 	struct acpi_hest_ia_corrected *cmc;
 	struct acpi_hest_ia_error_bank *mc_bank;
 
-	if (hest_hdr->type != ACPI_HEST_TYPE_IA32_CORRECTED_CHECK)
-		return 0;
-
 	cmc = (struct acpi_hest_ia_corrected *)hest_hdr;
 	if (!cmc->enabled)
 		return 0;

drivers/acpi/acpi_apd.c

@@ -77,6 +77,11 @@ static const struct apd_device_desc cz_i2c_desc = {
 	.fixed_clk_rate = 133000000,
 };
 
+static const struct apd_device_desc wt_i2c_desc = {
+	.setup = acpi_apd_setup,
+	.fixed_clk_rate = 150000000,
+};
+
 static struct property_entry uart_properties[] = {
 	PROPERTY_ENTRY_U32("reg-io-width", 4),
 	PROPERTY_ENTRY_U32("reg-shift", 2),
@@ -156,7 +161,7 @@ static const struct acpi_device_id acpi_apd_device_ids[] = {
 	/* Generic apd devices */
 #ifdef CONFIG_X86_AMD_PLATFORM_DEVICE
 	{ "AMD0010", APD_ADDR(cz_i2c_desc) },
-	{ "AMDI0010", APD_ADDR(cz_i2c_desc) },
+	{ "AMDI0010", APD_ADDR(wt_i2c_desc) },
 	{ "AMD0020", APD_ADDR(cz_uart_desc) },
 	{ "AMDI0020", APD_ADDR(cz_uart_desc) },
 	{ "AMD0030", },

drivers/acpi/acpi_lpss.c

@@ -718,13 +718,14 @@ static int acpi_lpss_resume_early(struct device *dev)
 #define LPSS_GPIODEF0_DMA1_D3		BIT(2)
 #define LPSS_GPIODEF0_DMA2_D3		BIT(3)
 #define LPSS_GPIODEF0_DMA_D3_MASK	GENMASK(3, 2)
+#define LPSS_GPIODEF0_DMA_LLP		BIT(13)
 
 static DEFINE_MUTEX(lpss_iosf_mutex);
 
 static void lpss_iosf_enter_d3_state(void)
 {
 	u32 value1 = 0;
-	u32 mask1 = LPSS_GPIODEF0_DMA_D3_MASK;
+	u32 mask1 = LPSS_GPIODEF0_DMA_D3_MASK | LPSS_GPIODEF0_DMA_LLP;
 	u32 value2 = LPSS_PMCSR_D3hot;
 	u32 mask2 = LPSS_PMCSR_Dx_MASK;
 	/*
@@ -768,8 +769,9 @@ exit:
 
 static void lpss_iosf_exit_d3_state(void)
 {
-	u32 value1 = LPSS_GPIODEF0_DMA1_D3 | LPSS_GPIODEF0_DMA2_D3;
-	u32 mask1 = LPSS_GPIODEF0_DMA_D3_MASK;
+	u32 value1 = LPSS_GPIODEF0_DMA1_D3 | LPSS_GPIODEF0_DMA2_D3 |
+		     LPSS_GPIODEF0_DMA_LLP;
+	u32 mask1 = LPSS_GPIODEF0_DMA_D3_MASK | LPSS_GPIODEF0_DMA_LLP;
 	u32 value2 = LPSS_PMCSR_D0;
 	u32 mask2 = LPSS_PMCSR_Dx_MASK;
 

drivers/acpi/acpi_video.c

@@ -43,17 +43,6 @@
 
 #define ACPI_VIDEO_BUS_NAME		"Video Bus"
 #define ACPI_VIDEO_DEVICE_NAME		"Video Device"
-#define ACPI_VIDEO_NOTIFY_SWITCH	0x80
-#define ACPI_VIDEO_NOTIFY_PROBE		0x81
-#define ACPI_VIDEO_NOTIFY_CYCLE		0x82
-#define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT	0x83
-#define ACPI_VIDEO_NOTIFY_PREV_OUTPUT	0x84
-
-#define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS	0x85
-#define	ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS	0x86
-#define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS	0x87
-#define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS	0x88
-#define ACPI_VIDEO_NOTIFY_DISPLAY_OFF		0x89
 
 #define MAX_NAME_LEN	20
 

drivers/acpi/apei/ghes.c

@@ -852,6 +852,8 @@ static int ghes_notify_nmi(unsigned int cmd, struct pt_regs *regs)
 		if (ghes_read_estatus(ghes, 1)) {
 			ghes_clear_estatus(ghes);
 			continue;
+		} else {
+			ret = NMI_HANDLED;
 		}
 
 		sev = ghes_severity(ghes->estatus->error_severity);
@@ -863,12 +865,11 @@ static int ghes_notify_nmi(unsigned int cmd, struct pt_regs *regs)
 
 		__process_error(ghes);
 		ghes_clear_estatus(ghes);
-
-		ret = NMI_HANDLED;
 	}
 
 #ifdef CONFIG_ARCH_HAVE_NMI_SAFE_CMPXCHG
-	irq_work_queue(&ghes_proc_irq_work);
+	if (ret == NMI_HANDLED)
+		irq_work_queue(&ghes_proc_irq_work);
 #endif
 	atomic_dec(&ghes_in_nmi);
 	return ret;

drivers/acpi/apei/hest.c

@@ -123,7 +123,13 @@ EXPORT_SYMBOL_GPL(apei_hest_parse);
  */
 static int __init hest_parse_cmc(struct acpi_hest_header *hest_hdr, void *data)
 {
-	return arch_apei_enable_cmcff(hest_hdr, data);
+	if (hest_hdr->type != ACPI_HEST_TYPE_IA32_CORRECTED_CHECK)
+		return 0;
+
+	if (!acpi_disable_cmcff)
+		return !arch_apei_enable_cmcff(hest_hdr, data);
+
+	return 0;
 }
 
 struct ghes_arr {
@@ -232,8 +238,9 @@ void __init acpi_hest_init(void)
 		goto err;
 	}
 
-	if (!acpi_disable_cmcff)
-		apei_hest_parse(hest_parse_cmc, NULL);
+	rc = apei_hest_parse(hest_parse_cmc, NULL);
+	if (rc)
+		goto err;
 
 	if (!ghes_disable) {
 		rc = apei_hest_parse(hest_parse_ghes_count, &ghes_count);

drivers/acpi/battery.c

@@ -430,39 +430,24 @@ static int acpi_battery_get_status(struct acpi_battery *battery)
 	return 0;
 }
 
-static int acpi_battery_get_info(struct acpi_battery *battery)
+
+static int extract_battery_info(const int use_bix,
+			 struct acpi_battery *battery,
+			 const struct acpi_buffer *buffer)
 {
 	int result = -EFAULT;
-	acpi_status status = 0;
-	char *name = test_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags) ?
-			"_BIX" : "_BIF";
-
-	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
 
-	if (!acpi_battery_present(battery))
-		return 0;
-	mutex_lock(&battery->lock);
-	status = acpi_evaluate_object(battery->device->handle, name,
-						NULL, &buffer);
-	mutex_unlock(&battery->lock);
-
-	if (ACPI_FAILURE(status)) {
-		ACPI_EXCEPTION((AE_INFO, status, "Evaluating %s", name));
-		return -ENODEV;
-	}
-
-	if (battery_bix_broken_package)
-		result = extract_package(battery, buffer.pointer,
+	if (use_bix && battery_bix_broken_package)
+		result = extract_package(battery, buffer->pointer,
 				extended_info_offsets + 1,
 				ARRAY_SIZE(extended_info_offsets) - 1);
-	else if (test_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags))
-		result = extract_package(battery, buffer.pointer,
+	else if (use_bix)
+		result = extract_package(battery, buffer->pointer,
 				extended_info_offsets,
 				ARRAY_SIZE(extended_info_offsets));
 	else
-		result = extract_package(battery, buffer.pointer,
+		result = extract_package(battery, buffer->pointer,
 				info_offsets, ARRAY_SIZE(info_offsets));
-	kfree(buffer.pointer);
 	if (test_bit(ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, &battery->flags))
 		battery->full_charge_capacity = battery->design_capacity;
 	if (test_bit(ACPI_BATTERY_QUIRK_THINKPAD_MAH, &battery->flags) &&
@@ -483,6 +468,45 @@ static int acpi_battery_get_info(struct acpi_battery *battery)
 	return result;
 }
 
+static int acpi_battery_get_info(struct acpi_battery *battery)
+{
+	const int xinfo = test_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags);
+	int use_bix;
+	int result = -ENODEV;
+
+	if (!acpi_battery_present(battery))
+		return 0;
+
+
+	for (use_bix = xinfo ? 1 : 0; use_bix >= 0; use_bix--) {
+		struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+		acpi_status status = AE_ERROR;
+
+		mutex_lock(&battery->lock);
+		status = acpi_evaluate_object(battery->device->handle,
+					      use_bix ? "_BIX":"_BIF",
+					      NULL, &buffer);
+		mutex_unlock(&battery->lock);
+
+		if (ACPI_FAILURE(status)) {
+			ACPI_EXCEPTION((AE_INFO, status, "Evaluating %s",
+					use_bix ? "_BIX":"_BIF"));
+		} else {
+			result = extract_battery_info(use_bix,
+						      battery,
+						      &buffer);
+
+			kfree(buffer.pointer);
+			break;
+		}
+	}
+
+	if (!result && !use_bix && xinfo)
+		pr_warn(FW_BUG "The _BIX method is broken, using _BIF.\n");
+
+	return result;
+}
+
 static int acpi_battery_get_state(struct acpi_battery *battery)
 {
 	int result = 0;

drivers/acpi/cppc_acpi.c

@@ -784,8 +784,10 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr)
 
 	/* Add per logical CPU nodes for reading its feedback counters. */
 	cpu_dev = get_cpu_device(pr->id);
-	if (!cpu_dev)
+	if (!cpu_dev) {
+		ret = -EINVAL;
 		goto out_free;
+	}
 
 	ret = kobject_init_and_add(&cpc_ptr->kobj, &cppc_ktype, &cpu_dev->kobj,
 			"acpi_cppc");

drivers/acpi/video_detect.c

@@ -296,6 +296,26 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V131"),
 		},
 	},
+	{
+	 /* https://bugzilla.redhat.com/show_bug.cgi?id=1123661 */
+	 .callback = video_detect_force_native,
+	 .ident = "Dell XPS 17 L702X",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "Dell System XPS L702X"),
+		},
+	},
+	{
+	/* https://bugzilla.redhat.com/show_bug.cgi?id=1204476 */
+	/* https://bugs.launchpad.net/ubuntu/+source/linux-lts-trusty/+bug/1416940 */
+	.callback = video_detect_force_native,
+	.ident = "HP Pavilion dv6",
+	.matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv6 Notebook PC"),
+		},
+	},
+
 	{ },
 };
 

include/acpi/video.h

@@ -30,6 +30,17 @@ struct acpi_device;
 #define ACPI_VIDEO_DISPLAY_LEGACY_PANEL   0x0110
 #define ACPI_VIDEO_DISPLAY_LEGACY_TV      0x0200
 
+#define ACPI_VIDEO_NOTIFY_SWITCH		0x80
+#define ACPI_VIDEO_NOTIFY_PROBE			0x81
+#define ACPI_VIDEO_NOTIFY_CYCLE			0x82
+#define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT		0x83
+#define ACPI_VIDEO_NOTIFY_PREV_OUTPUT		0x84
+#define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS	0x85
+#define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS	0x86
+#define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS	0x87
+#define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS	0x88
+#define ACPI_VIDEO_NOTIFY_DISPLAY_OFF		0x89
+
 enum acpi_backlight_type {
 	acpi_backlight_undef = -1,
 	acpi_backlight_none = 0,