From 2bc6b218717b9d08f466f88209251d54bc09b207 Mon Sep 17 00:00:00 2001 From: Fuad Tabba Date: Tue, 22 Sep 2026 19:14:30 +0100 Subject: arm64/boot: Disable trapping of PMZR_EL0 writes to EL2 __init_el2_fgt2() writes one mask to both HDFGRTR2_EL2 and HDFGWTR2_EL2. PMZR_EL0 is write-only, so its trap bit, nPMZR_EL0, exists only in HDFGWTR2_EL2 and is therefore never set: a PMZR_EL0 write from the host traps to EL2, where the nVHE hypervisor has no handler and BUG()s. The kernel never writes PMZR_EL0, but kernel.perf_user_access=1 has the PMU driver set PMUSERENR_EL0.UEN for a task with a user-read event, so a write from EL0 reaches the trap and takes the host down without a panic message. Accumulate the HDFGWTR2_EL2 bits separately, as __init_el2_fgt() already does for HDFGWTR_EL2, and set nPMZR_EL0 with the other FEAT_PMUv3p9 bits. Fixes: 858c7bfcb35e1 ("arm64/boot: Enable EL2 requirements for FEAT_PMUv3p9") Cc: stable@vger.kernel.org Signed-off-by: Fuad Tabba Reviewed-by: Anshuman Khandual Reviewed-by: Oliver Upton Signed-off-by: Will Deacon --- include/sound/sdca_interrupts.h | 109 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 109 insertions(+) create mode 100644 include/sound/sdca_interrupts.h (limited to 'include/sound/sdca_interrupts.h') diff --git a/include/sound/sdca_interrupts.h b/include/sound/sdca_interrupts.h new file mode 100644 index 000000000..3b30146e2 --- /dev/null +++ b/include/sound/sdca_interrupts.h @@ -0,0 +1,109 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * The MIPI SDCA specification is available for public downloads at + * https://www.mipi.org/mipi-sdca-v1-0-download + * + * Copyright (C) 2025 Cirrus Logic, Inc. and + * Cirrus Logic International Semiconductor Ltd. + */ + +#ifndef __SDCA_INTERRUPTS_H__ +#define __SDCA_INTERRUPTS_H__ + +#include +#include +#include + +struct device; +struct snd_soc_component; +struct sdca_function_data; + +#define SDCA_MAX_INTERRUPTS 31 /* the last bit is reserved for future extensions */ + +/** + * struct sdca_interrupt - contains information about a single SDCA interrupt + * @name: The name of the interrupt. + * @dev: Pointer to the Function device. + * @device_regmap: Pointer to the IRQ regmap. + * @function_regmap: Pointer to the SDCA Function regmap. + * @component: Pointer to the ASoC component owns the interrupt. + * @function: Pointer to the Function that the interrupt is associated with. + * @entity: Pointer to the Entity that the interrupt is associated with. + * @control: Pointer to the Control that the interrupt is associated with. + * @handler: Handler function to be called for the IRQ. + * @priv: Pointer to private data for use by the handler. + * @free_priv: Pointer to a function that can be used to free the priv data. + * @irq: IRQ number allocated to this interrupt, also used internally to track + * the IRQ being assigned. + * @early_request: Flag to indicate this IRQ was requested at bus probe time. + */ +struct sdca_interrupt { + const char *name; + + struct device *dev; + struct regmap *device_regmap; + struct regmap *function_regmap; + struct snd_soc_component *component; + struct sdca_function_data *function; + struct sdca_entity *entity; + struct sdca_control *control; + irq_handler_t handler; + + void *priv; + void (*free_priv)(struct sdca_interrupt *interrupt); + + int irq; + bool early_request; +}; + +/** + * struct sdca_interrupt_info - contains top-level SDCA interrupt information + * @irq_chip: regmap irq chip structure. + * @irq_data: regmap irq chip data structure. + * @irqs: Array of data for each individual IRQ. + * @irq_lock: Protects access to the list of sdca_interrupt structures. + */ +struct sdca_interrupt_info { + struct regmap_irq_chip irq_chip; + struct regmap_irq_chip_data *irq_data; + + struct sdca_interrupt irqs[SDCA_MAX_INTERRUPTS]; + + struct mutex irq_lock; /* Protect irqs list across functions */ +}; + +int sdca_irq_request(struct device *dev, struct sdca_interrupt_info *interrupt_info, + int sdca_irq, const char *name, irq_handler_t handler, + void *data); +void sdca_irq_free(struct device *dev, struct sdca_interrupt_info *interrupt_info, + int sdca_irq, const char *name, void *data); +int sdca_irq_data_populate(struct device *dev, struct regmap *function_regmap, + struct snd_soc_component *component, + struct sdca_function_data *function, + struct sdca_entity *entity, + struct sdca_control *control, + struct sdca_interrupt *interrupt); +int sdca_irq_populate_early(struct device *dev, struct regmap *function_regmap, + struct sdca_function_data *function, + struct sdca_interrupt_info *info); +int sdca_irq_populate(struct sdca_function_data *function, + struct snd_soc_component *component, + struct sdca_interrupt_info *info); +void sdca_irq_cleanup(struct device *dev, + struct sdca_function_data *function, + struct sdca_interrupt_info *info); +void sdca_irq_cleanup_late(struct device *dev, + struct sdca_function_data *function, + struct sdca_interrupt_info *info); + +struct sdca_interrupt_info *devm_sdca_irq_allocate(struct device *dev, + struct regmap *regmap, int irq); + +void sdca_irq_enable_early(struct sdca_function_data *function, + struct sdca_interrupt_info *info); +void sdca_irq_enable(struct sdca_function_data *function, + struct sdca_interrupt_info *info); +void sdca_irq_disable(struct sdca_function_data *function, + struct sdca_interrupt_info *info); + +#endif -- cgit v1.3.1