LXR linux/include/linux/acpi

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * Copyright (C) 2016, Semihalf
   4 *      Author: Tomasz Nowicki <tn@semihalf.com>
   5 */
   6
   7#ifndef __ACPI_IORT_H__
   8#define __ACPI_IORT_H__
   9
  10#include <linux/acpi.h>
  11#include <linux/fwnode.h>
  12#include <linux/irqdomain.h>
  13
  14#define IORT_IRQ_MASK(irq)              (irq & 0xffffffffULL)
  15#define IORT_IRQ_TRIGGER_MASK(irq)      ((irq >> 32) & 0xffffffffULL)
  16
  17/*
  18 * PMCG model identifiers for use in smmu pmu driver. Please note
  19 * that this is purely for the use of software and has nothing to
  20 * do with hardware or with IORT specification.
  21 */
  22#define IORT_SMMU_V3_PMCG_GENERIC        0x00000000 /* Generic SMMUv3 PMCG */
  23#define IORT_SMMU_V3_PMCG_HISI_HIP08     0x00000001 /* HiSilicon HIP08 PMCG */
  24
  25int iort_register_domain_token(int trans_id, phys_addr_t base,
  26                               struct fwnode_handle *fw_node);
  27void iort_deregister_domain_token(int trans_id);
  28struct fwnode_handle *iort_find_domain_token(int trans_id);
  29#ifdef CONFIG_ACPI_IORT
  30void acpi_iort_init(void);
  31u32 iort_msi_map_id(struct device *dev, u32 id);
  32struct irq_domain *iort_get_device_domain(struct device *dev, u32 id,
  33                                          enum irq_domain_bus_token bus_token);
  34void acpi_configure_pmsi_domain(struct device *dev);
  35int iort_pmsi_get_dev_id(struct device *dev, u32 *dev_id);
  36/* IOMMU interface */
  37int iort_dma_get_ranges(struct device *dev, u64 *size);
  38int iort_iommu_configure_id(struct device *dev, const u32 *id_in);
  39int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head);
  40phys_addr_t acpi_iort_dma_get_max_cpu_address(void);
  41#else
  42static inline void acpi_iort_init(void) { }
  43static inline u32 iort_msi_map_id(struct device *dev, u32 id)
  44{ return id; }
  45static inline struct irq_domain *iort_get_device_domain(
  46        struct device *dev, u32 id, enum irq_domain_bus_token bus_token)
  47{ return NULL; }
  48static inline void acpi_configure_pmsi_domain(struct device *dev) { }
  49/* IOMMU interface */
  50static inline int iort_dma_get_ranges(struct device *dev, u64 *size)
  51{ return -ENODEV; }
  52static inline int iort_iommu_configure_id(struct device *dev, const u32 *id_in)
  53{ return -ENODEV; }
  54static inline
  55int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head)
  56{ return 0; }
  57
  58static inline phys_addr_t acpi_iort_dma_get_max_cpu_address(void)
  59{ return PHYS_ADDR_MAX; }
  60#endif
  61
  62#endif /* __ACPI_IORT_H__ */
  63