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_rid(struct device *dev, u32 req_id);
  32struct irq_domain *iort_get_device_domain(struct device *dev, u32 req_id);
  33void acpi_configure_pmsi_domain(struct device *dev);
  34int iort_pmsi_get_dev_id(struct device *dev, u32 *dev_id);
  35/* IOMMU interface */
  36void iort_dma_setup(struct device *dev, u64 *dma_addr, u64 *size);
  37const struct iommu_ops *iort_iommu_configure(struct device *dev);
  38int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head);
  39#else
  40static inline void acpi_iort_init(void) { }
  41static inline u32 iort_msi_map_rid(struct device *dev, u32 req_id)
  42{ return req_id; }
  43static inline struct irq_domain *iort_get_device_domain(struct device *dev,
  44                                                        u32 req_id)
  45{ return NULL; }
  46static inline void acpi_configure_pmsi_domain(struct device *dev) { }
  47/* IOMMU interface */
  48static inline void iort_dma_setup(struct device *dev, u64 *dma_addr,
  49                                  u64 *size) { }
  50static inline const struct iommu_ops *iort_iommu_configure(
  51                                      struct device *dev)
  52{ return NULL; }
  53static inline
  54int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head)
  55{ return 0; }
  56#endif
  57
  58#endif /* __ACPI_IORT_H__ */
  59