Merge tag 'acpi-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI support updates from Rafael Wysocki:
 "These include an update of the CMOS RTC driver and the related ACPI
  and x86 code that, among other things, switches it over to using the
  platform device interface for device binding on x86 instead of the PNP
  device driver interface (which allows the code in question to be
  simplified quite a bit), a major update of the ACPI Time and Alarm
  Device (TAD) driver adding an RTC class device interface to it, and
  updates of core ACPI drivers that remove some unnecessary and not
  really useful code from them.

  Apart from that, two drivers are converted to using the platform
  driver interface for device binding instead of the ACPI driver one,
  which is slated for removal, support for the Performance Limited
  register is added to the ACPI CPPC library and there are some
  janitorial updates of it and the related cpufreq CPPC driver, the ACPI
  processor driver is fixed and cleaned up, and NVIDIA vendor CPER
  record handler is added to the APEI GHES code.

  Also, the interface for obtaining a CPU UID from ACPI is consolidated
  across architectures and used for fixing a problem with the PCI TPH
  Steering Tag on ARM64, there are two updates related to ACPICA, a
  minor ACPI OS Services Layer (OSL) update, and a few assorted updates
  related to ACPI tables parsing.

  Specifics:

   - Update maintainers information regarding ACPICA (Rafael Wysocki)

   - Replace strncpy() with strscpy_pad() in acpi_ut_safe_strncpy()
     (Kees Cook)

   - Trigger an ordered system power off after encountering a fatal
     error operator in AML (Armin Wolf)

   - Enable ACPI FPDT parsing on LoongArch (Xi Ruoyao)

   - Remove the temporary stop-gap acpi_pptt_cache_v1_full structure
     from the ACPI PPTT parser (Ben Horgan)

   - Add support for exposing ACPI FPDT subtables FBPT and S3PT (Nate
     DeSimone)

   - Address multiple assorted issues and clean up the code in the ACPI
     processor idle driver (Huisong Li)

   - Replace strlcat() in the ACPI processor idle drive with a better
     alternative (Andy Shevchenko)

   - Rearrange and clean up acpi_processor_errata_piix4() (Rafael
     Wysocki)

   - Move reference performance to capabilities and fix an uninitialized
     variable in the ACPI CPPC library (Pengjie Zhang)

   - Add support for the Performance Limited Register to the ACPI CPPC
     library (Sumit Gupta)

   - Add cppc_get_perf() API to read performance controls, extend
     cppc_set_epp_perf() for FFH/SystemMemory, and make the ACPI CPPC
     library warn on missing mandatory DESIRED_PERF register (Sumit
     Gupta)

   - Modify the cpufreq CPPC driver to update MIN_PERF/MAX_PERF in
     target callbacks to allow it to control performance bounds via
     standard scaling_min_freq and scaling_max_freq sysfs attributes and
     add sysfs documentation for the Performance Limited Register to it
     (Sumit Gupta)

   - Add ACPI support to the platform device interface in the CMOS RTC
     driver, make the ACPI core device enumeration code create a
     platform device for the CMOS RTC, and drop CMOS RTC PNP device
     support (Rafael Wysocki)

   - Consolidate the x86-specific CMOS RTC handling with the ACPI TAD
     driver and clean up the CMOS RTC ACPI address space handler (Rafael
     Wysocki)

   - Enable ACPI alarm in the CMOS RTC driver if advertised in ACPI FADT
     and allow that driver to work without a dedicated IRQ if the ACPI
     alarm is used (Rafael Wysocki)

   - Clean up the ACPI TAD driver in various ways and add an RTC class
     device interface, including both the RTC setting/reading and alarm
     timer support, to it (Rafael Wysocki)

   - Clean up the ACPI AC and ACPI PAD (processor aggregator device)
     drivers (Rafael Wysocki)

   - Rework checking for duplicate video bus devices and consolidate
     pnp.bus_id workarounds handling in the ACPI video bus driver
     (Rafael Wysocki)

   - Update the ACPI core device drivers to stop setting
     acpi_device_name() unnecessarily (Rafael Wysocki)

   - Rearrange code using acpi_device_class() in the ACPI core device
     drivers and update them to stop setting acpi_device_class()
     unnecessarily (Rafael Wysocki)

   - Define ACPI_AC_CLASS in one place (Rafael Wysocki)

   - Convert the ni903x_wdt watchdog driver and the xen ACPI PAD driver
     to bind to platform devices instead of ACPI devices (Rafael
     Wysocki)

   - Add devm_ghes_register_vendor_record_notifier(), use it in the PCI
     hisi driver, and Add NVIDIA vendor CPER record handler (Kai-Heng
     Feng)

   - Consolidate the interface for obtaining a CPU UID from ACPI across
     architectures and use it to address incorrect PCI TPH Steering Tag
     on ARM64 resulting from the invalid assumption that the ACPI
     Processor UID would always be the same as the corresponding logical
     CPU ID in Linux (Chengwen Feng)"

* tag 'acpi-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (73 commits)
  ACPICA: Update maintainers information
  watchdog: ni903x_wdt: Convert to a platform driver
  ACPI: PAD: xen: Convert to a platform driver
  ACPI: processor: idle: Reset cpuidle on C-state list changes
  cpuidle: Extract and export no-lock variants of cpuidle_unregister_device()
  PCI/TPH: Pass ACPI Processor UID to Cache Locality _DSM
  ACPI: PPTT: Use acpi_get_cpu_uid() and remove get_acpi_id_for_cpu()
  perf: arm_cspmu: Switch to acpi_get_cpu_uid() from get_acpi_id_for_cpu()
  ACPI: Centralize acpi_get_cpu_uid() declaration in include/linux/acpi.h
  x86/acpi: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval
  RISC-V: ACPI: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval
  LoongArch: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval
  arm64: acpi: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval
  ACPI: APEI: GHES: Add NVIDIA vendor CPER record handler
  PCI: hisi: Use devm_ghes_register_vendor_record_notifier()
  ACPI: APEI: GHES: Add devm_ghes_register_vendor_record_notifier()
  ACPI: tables: Enable FPDT on LoongArch
  ACPI: processor: idle: Fix NULL pointer dereference in hotplug path
  ACPI: processor: idle: Reset power_setup_done flag on initialization failure
  ACPI: TAD: Add alarm support to the RTC class device interface
  ...

8 files changed, 63 insertions, 15 deletions

diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index aad1a95e6863..b701b5f972cb 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -613,6 +613,8 @@ struct acpi_bus_event {
 	u32 data;
 };
 
+#define ACPI_AC_CLASS	"ac_adapter"
+
 extern struct kobject *acpi_kobj;
 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int);
 void acpi_bus_private_data_handler(acpi_handle, void *);
@@ -625,7 +627,8 @@ int acpi_dev_install_notify_handler(struct acpi_device *adev,
 void acpi_dev_remove_notify_handler(struct acpi_device *adev,
 				    u32 handler_type,
 				    acpi_notify_handler handler);
-extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32);
+extern int acpi_notifier_call_chain(const char *device_class,
+				    const char *bus_id, u32 type, u32 data);
 extern int register_acpi_notifier(struct notifier_block *);
 extern int unregister_acpi_notifier(struct notifier_block *);
 
@@ -760,8 +763,6 @@ int acpi_disable_wakeup_device_power(struct acpi_device *dev);
 #ifdef CONFIG_X86
 bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status);
 bool acpi_quirk_skip_acpi_ac_and_battery(void);
-int acpi_install_cmos_rtc_space_handler(acpi_handle handle);
-void acpi_remove_cmos_rtc_space_handler(acpi_handle handle);
 int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip);
 #else
 static inline bool acpi_device_override_status(struct acpi_device *adev,
@@ -773,13 +774,6 @@ static inline bool acpi_quirk_skip_acpi_ac_and_battery(void)
 {
 	return false;
 }
-static inline int acpi_install_cmos_rtc_space_handler(acpi_handle handle)
-{
-	return 1;
-}
-static inline void acpi_remove_cmos_rtc_space_handler(acpi_handle handle)
-{
-}
 static inline int
 acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
 {
diff --git a/include/acpi/cppc_acpi.h b/include/acpi/cppc_acpi.h
index 4d644f03098e..d8e405becdc3 100644
--- a/include/acpi/cppc_acpi.h
+++ b/include/acpi/cppc_acpi.h
@@ -42,6 +42,11 @@
 #define CPPC_EPP_PERFORMANCE_PREF		0x00
 #define CPPC_EPP_ENERGY_EFFICIENCY_PREF		0xFF
 
+#define CPPC_PERF_LIMITED_DESIRED_EXCURSION	BIT(0)
+#define CPPC_PERF_LIMITED_MINIMUM_EXCURSION	BIT(1)
+#define CPPC_PERF_LIMITED_MASK		(CPPC_PERF_LIMITED_DESIRED_EXCURSION | \
+					 CPPC_PERF_LIMITED_MINIMUM_EXCURSION)
+
 /* Each register has the folowing format. */
 struct cpc_reg {
 	u8 descriptor;
@@ -116,6 +121,7 @@ struct cppc_perf_caps {
 	u32 guaranteed_perf;
 	u32 highest_perf;
 	u32 nominal_perf;
+	u32 reference_perf;
 	u32 lowest_perf;
 	u32 lowest_nonlinear_perf;
 	u32 lowest_freq;
@@ -133,7 +139,6 @@ struct cppc_perf_ctrls {
 struct cppc_perf_fb_ctrs {
 	u64 reference;
 	u64 delivered;
-	u64 reference_perf;
 	u64 wraparound_time;
 };
 
@@ -151,6 +156,7 @@ extern int cppc_get_desired_perf(int cpunum, u64 *desired_perf);
 extern int cppc_get_nominal_perf(int cpunum, u64 *nominal_perf);
 extern int cppc_get_highest_perf(int cpunum, u64 *highest_perf);
 extern int cppc_get_perf_ctrs(int cpu, struct cppc_perf_fb_ctrs *perf_fb_ctrs);
+extern int cppc_get_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls);
 extern int cppc_set_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls);
 extern int cppc_set_enable(int cpu, bool enable);
 extern int cppc_get_perf_caps(int cpu, struct cppc_perf_caps *caps);
@@ -173,6 +179,8 @@ extern int cppc_get_auto_act_window(int cpu, u64 *auto_act_window);
 extern int cppc_set_auto_act_window(int cpu, u64 auto_act_window);
 extern int cppc_get_auto_sel(int cpu, bool *enable);
 extern int cppc_set_auto_sel(int cpu, bool enable);
+extern int cppc_get_perf_limited(int cpu, u64 *perf_limited);
+extern int cppc_set_perf_limited(int cpu, u64 bits_to_clear);
 extern int amd_get_highest_perf(unsigned int cpu, u32 *highest_perf);
 extern int amd_get_boost_ratio_numerator(unsigned int cpu, u64 *numerator);
 extern int amd_detect_prefcore(bool *detected);
@@ -193,6 +201,10 @@ static inline int cppc_get_perf_ctrs(int cpu, struct cppc_perf_fb_ctrs *perf_fb_
 {
 	return -EOPNOTSUPP;
 }
+static inline int cppc_get_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls)
+{
+	return -EOPNOTSUPP;
+}
 static inline int cppc_set_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls)
 {
 	return -EOPNOTSUPP;
@@ -265,6 +277,14 @@ static inline int cppc_set_auto_sel(int cpu, bool enable)
 {
 	return -EOPNOTSUPP;
 }
+static inline int cppc_get_perf_limited(int cpu, u64 *perf_limited)
+{
+	return -EOPNOTSUPP;
+}
+static inline int cppc_set_perf_limited(int cpu, u64 bits_to_clear)
+{
+	return -EOPNOTSUPP;
+}
 static inline int amd_get_highest_perf(unsigned int cpu, u32 *highest_perf)
 {
 	return -ENODEV;
diff --git a/include/acpi/ghes.h b/include/acpi/ghes.h
index 7bea522c0657..8d7e5caef3f1 100644
--- a/include/acpi/ghes.h
+++ b/include/acpi/ghes.h
@@ -71,6 +71,17 @@ int ghes_register_vendor_record_notifier(struct notifier_block *nb);
  */
 void ghes_unregister_vendor_record_notifier(struct notifier_block *nb);
 
+/**
+ * devm_ghes_register_vendor_record_notifier - device-managed vendor
+ * record notifier registration.
+ * @dev: device that owns the notifier lifetime
+ * @nb: pointer to the notifier_block structure of the vendor record handler
+ *
+ * Return: 0 on success, negative errno on failure.
+ */
+int devm_ghes_register_vendor_record_notifier(struct device *dev,
+					      struct notifier_block *nb);
+
 struct list_head *ghes_get_devices(void);
 
 void ghes_estatus_pool_region_free(unsigned long addr, u32 size);
diff --git a/include/acpi/processor.h b/include/acpi/processor.h
index 7146a8e9e9c2..554be224ce76 100644
--- a/include/acpi/processor.h
+++ b/include/acpi/processor.h
@@ -14,8 +14,6 @@
 
 #include <asm/acpi.h>
 
-#define ACPI_PROCESSOR_CLASS		"processor"
-#define ACPI_PROCESSOR_DEVICE_NAME	"Processor"
 #define ACPI_PROCESSOR_DEVICE_HID	"ACPI0007"
 #define ACPI_PROCESSOR_CONTAINER_HID	"ACPI0010"
 
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 4d2f0bed7a06..bfacb9475aac 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -324,6 +324,17 @@ int acpi_unmap_cpu(int cpu);
 
 acpi_handle acpi_get_processor_handle(int cpu);
 
+/**
+ * acpi_get_cpu_uid() - Get ACPI Processor UID of from MADT table
+ * @cpu: Logical CPU number (0-based)
+ * @uid: Pointer to store ACPI Processor UID
+ *
+ * Return: 0 on success (ACPI Processor ID stored in *uid);
+ *         -EINVAL if CPU number is invalid or out of range;
+ *         -ENODEV if ACPI Processor UID for the CPU is not found.
+ */
+int acpi_get_cpu_uid(unsigned int cpu, u32 *uid);
+
 #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
 int acpi_get_ioapic_id(acpi_handle handle, u32 gsi_base, u64 *phys_addr);
 #endif
@@ -791,6 +802,14 @@ const char *acpi_get_subsystem_id(acpi_handle handle);
 int acpi_mrrm_max_mem_region(void);
 #endif
 
+#define ACPI_CMOS_RTC_IDS	\
+	{ "PNP0B00", },		\
+	{ "PNP0B01", },		\
+	{ "PNP0B02", },		\
+	{ "", }
+
+extern bool cmos_rtc_platform_device_present;
+
 #else	/* !CONFIG_ACPI */
 
 #define acpi_disabled 1
@@ -1116,6 +1135,8 @@ static inline int acpi_mrrm_max_mem_region(void)
 	return 1;
 }
 
+#define cmos_rtc_platform_device_present	false
+
 #endif	/* !CONFIG_ACPI */
 
 #ifdef CONFIG_ACPI_HMAT
diff --git a/include/linux/auxiliary_bus.h b/include/linux/auxiliary_bus.h
index 4086afd0cc6b..bc09b55e3682 100644
--- a/include/linux/auxiliary_bus.h
+++ b/include/linux/auxiliary_bus.h
@@ -271,6 +271,8 @@ struct auxiliary_device *__devm_auxiliary_device_create(struct device *dev,
 	__devm_auxiliary_device_create(dev, KBUILD_MODNAME, devname,  \
 				       platform_data, 0)
 
+bool dev_is_auxiliary(struct device *dev);
+
 /**
  * module_auxiliary_driver() - Helper macro for registering an auxiliary driver
  * @__auxiliary_driver: auxiliary driver struct
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h
index 4073690504a7..a2485348def3 100644
--- a/include/linux/cpuidle.h
+++ b/include/linux/cpuidle.h
@@ -188,6 +188,7 @@ extern void cpuidle_driver_state_disabled(struct cpuidle_driver *drv, int idx,
 extern void cpuidle_unregister_driver(struct cpuidle_driver *drv);
 extern int cpuidle_register_device(struct cpuidle_device *dev);
 extern void cpuidle_unregister_device(struct cpuidle_device *dev);
+extern void cpuidle_unregister_device_no_lock(struct cpuidle_device *dev);
 extern int cpuidle_register(struct cpuidle_driver *drv,
 			    const struct cpumask *const coupled_cpus);
 extern void cpuidle_unregister(struct cpuidle_driver *drv);
@@ -226,6 +227,7 @@ static inline void cpuidle_unregister_driver(struct cpuidle_driver *drv) { }
 static inline int cpuidle_register_device(struct cpuidle_device *dev)
 {return -ENODEV; }
 static inline void cpuidle_unregister_device(struct cpuidle_device *dev) { }
+static inline void cpuidle_unregister_device_no_lock(struct cpuidle_device *dev) {}
 static inline int cpuidle_register(struct cpuidle_driver *drv,
 				   const struct cpumask *const coupled_cpus)
 {return -ENODEV; }
diff --git a/include/linux/pci-tph.h b/include/linux/pci-tph.h
index ba28140ce670..be68cd17f2f8 100644
--- a/include/linux/pci-tph.h
+++ b/include/linux/pci-tph.h
@@ -25,7 +25,7 @@ int pcie_tph_set_st_entry(struct pci_dev *pdev,
 			  unsigned int index, u16 tag);
 int pcie_tph_get_cpu_st(struct pci_dev *dev,
 			enum tph_mem_type mem_type,
-			unsigned int cpu_uid, u16 *tag);
+			unsigned int cpu, u16 *tag);
 void pcie_disable_tph(struct pci_dev *pdev);
 int pcie_enable_tph(struct pci_dev *pdev, int mode);
 u16 pcie_tph_get_st_table_size(struct pci_dev *pdev);
@@ -36,7 +36,7 @@ static inline int pcie_tph_set_st_entry(struct pci_dev *pdev,
 { return -EINVAL; }
 static inline int pcie_tph_get_cpu_st(struct pci_dev *dev,
 				      enum tph_mem_type mem_type,
-				      unsigned int cpu_uid, u16 *tag)
+				      unsigned int cpu, u16 *tag)
 { return -EINVAL; }
 static inline void pcie_disable_tph(struct pci_dev *pdev) { }
 static inline int pcie_enable_tph(struct pci_dev *pdev, int mode)