diff options
| author | Lorenzo Pieralisi <lpieralisi@kernel.org> | 2026-01-15 10:50:51 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2026-01-27 15:31:42 +0100 |
| commit | a97efa5ba594642b86fb6702f38ed0d18e3b0269 (patch) | |
| tree | 70108d39e134287b9b1de7ff89c5e79495d151c0 /include/linux | |
| parent | 35866efa52feaf48cc54a0745851a555654e1446 (diff) | |
irqchip/gic-v5: Add ACPI ITS probing
On ACPI ARM64 systems the GICv5 ITS configuration and translate frames
are described in the MADT table.
Refactor the current GICv5 ITS driver code to share common functions
between ACPI and OF and implement ACPI probing in the GICv5 ITS driver.
Add iort_msi_xlate() to map a device ID and retrieve an MSI controller
fwnode node for ACPI systems and update pci_msi_map_rid_ctlr_node() to
use it in its ACPI code path.
Add the required functions to IORT code for deviceID retrieval and IRQ
domain registration and look-up so that the GICv5 ITS driver in an
ACPI based system can be successfully probed.
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Acked-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260115-gicv5-host-acpi-v3-5-c13a9a150388@kernel.org
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/acpi_iort.h | 10 | ||||
| -rw-r--r-- | include/linux/irqchip/arm-gic-v5.h | 1 |
2 files changed, 10 insertions, 1 deletions
diff --git a/include/linux/acpi_iort.h b/include/linux/acpi_iort.h index d4ed5622cf2b..2d22268677a9 100644 --- a/include/linux/acpi_iort.h +++ b/include/linux/acpi_iort.h @@ -27,12 +27,14 @@ int iort_register_domain_token(int trans_id, phys_addr_t base, struct fwnode_handle *fw_node); void iort_deregister_domain_token(int trans_id); struct fwnode_handle *iort_find_domain_token(int trans_id); -int iort_pmsi_get_dev_id(struct device *dev, u32 *dev_id); #ifdef CONFIG_ACPI_IORT u32 iort_msi_map_id(struct device *dev, u32 id); +u32 iort_msi_xlate(struct device *dev, u32 id, struct fwnode_handle **node); +int iort_its_translate_pa(struct fwnode_handle *node, phys_addr_t *base); struct irq_domain *iort_get_device_domain(struct device *dev, u32 id, enum irq_domain_bus_token bus_token); +int iort_pmsi_get_msi_info(struct device *dev, u32 *dev_id, phys_addr_t *pa); void acpi_configure_pmsi_domain(struct device *dev); void iort_get_rmr_sids(struct fwnode_handle *iommu_fwnode, struct list_head *head); @@ -46,9 +48,15 @@ phys_addr_t acpi_iort_dma_get_max_cpu_address(void); #else static inline u32 iort_msi_map_id(struct device *dev, u32 id) { return id; } +static inline u32 iort_msi_xlate(struct device *dev, u32 id, struct fwnode_handle **node) +{ return id; } +static inline int iort_its_translate_pa(struct fwnode_handle *node, phys_addr_t *base) +{ return -ENODEV; } static inline struct irq_domain *iort_get_device_domain( struct device *dev, u32 id, enum irq_domain_bus_token bus_token) { return NULL; } +static inline int iort_pmsi_get_msi_info(struct device *dev, u32 *dev_id, phys_addr_t *pa) +{ return -ENODEV; } static inline void acpi_configure_pmsi_domain(struct device *dev) { } static inline void iort_get_rmr_sids(struct fwnode_handle *iommu_fwnode, struct list_head *head) { } diff --git a/include/linux/irqchip/arm-gic-v5.h b/include/linux/irqchip/arm-gic-v5.h index ff5b1a4931d7..334b6986435c 100644 --- a/include/linux/irqchip/arm-gic-v5.h +++ b/include/linux/irqchip/arm-gic-v5.h @@ -392,4 +392,5 @@ int gicv5_alloc_lpi(void); void gicv5_free_lpi(u32 lpi); void __init gicv5_its_of_probe(struct device_node *parent); +void __init gicv5_its_acpi_probe(void); #endif |