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11a8c5e3a9
Extract the code that sets up the IOMMU infrastructure from IORT, since it can be reused by VIOT. Move it one level up into a new acpi_iommu_configure_id() function, which calls the IORT parsing function which in turn calls the acpi_iommu_fwspec_init() helper. Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org> Reviewed-by: Eric Auger <eric.auger@redhat.com> Reviewed-by: Robin Murphy <robin.murphy@arm.com> Link: https://lore.kernel.org/r/20210618152059.1194210-3-jean-philippe@linaro.org Signed-off-by: Joerg Roedel <jroedel@suse.de>
62 lines
2.3 KiB
C
62 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2016, Semihalf
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* Author: Tomasz Nowicki <tn@semihalf.com>
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*/
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#ifndef __ACPI_IORT_H__
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#define __ACPI_IORT_H__
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#include <linux/acpi.h>
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#include <linux/fwnode.h>
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#include <linux/irqdomain.h>
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#define IORT_IRQ_MASK(irq) (irq & 0xffffffffULL)
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#define IORT_IRQ_TRIGGER_MASK(irq) ((irq >> 32) & 0xffffffffULL)
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/*
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* PMCG model identifiers for use in smmu pmu driver. Please note
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* that this is purely for the use of software and has nothing to
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* do with hardware or with IORT specification.
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*/
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#define IORT_SMMU_V3_PMCG_GENERIC 0x00000000 /* Generic SMMUv3 PMCG */
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#define IORT_SMMU_V3_PMCG_HISI_HIP08 0x00000001 /* HiSilicon HIP08 PMCG */
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int iort_register_domain_token(int trans_id, phys_addr_t base,
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struct fwnode_handle *fw_node);
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void iort_deregister_domain_token(int trans_id);
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struct fwnode_handle *iort_find_domain_token(int trans_id);
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#ifdef CONFIG_ACPI_IORT
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void acpi_iort_init(void);
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u32 iort_msi_map_id(struct device *dev, u32 id);
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struct irq_domain *iort_get_device_domain(struct device *dev, u32 id,
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enum irq_domain_bus_token bus_token);
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void acpi_configure_pmsi_domain(struct device *dev);
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int iort_pmsi_get_dev_id(struct device *dev, u32 *dev_id);
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/* IOMMU interface */
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int iort_dma_get_ranges(struct device *dev, u64 *size);
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int iort_iommu_configure_id(struct device *dev, const u32 *id_in);
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int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head);
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phys_addr_t acpi_iort_dma_get_max_cpu_address(void);
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#else
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static inline void acpi_iort_init(void) { }
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static inline u32 iort_msi_map_id(struct device *dev, u32 id)
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{ return id; }
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static inline struct irq_domain *iort_get_device_domain(
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struct device *dev, u32 id, enum irq_domain_bus_token bus_token)
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{ return NULL; }
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static inline void acpi_configure_pmsi_domain(struct device *dev) { }
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/* IOMMU interface */
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static inline int iort_dma_get_ranges(struct device *dev, u64 *size)
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{ return -ENODEV; }
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static inline int iort_iommu_configure_id(struct device *dev, const u32 *id_in)
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{ return -ENODEV; }
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static inline
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int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head)
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{ return 0; }
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static inline phys_addr_t acpi_iort_dma_get_max_cpu_address(void)
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{ return PHYS_ADDR_MAX; }
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#endif
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#endif /* __ACPI_IORT_H__ */
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