LXR linux/include/linux/acpi

   1/*
   2 * Copyright (C) 2016, Semihalf
   3 *      Author: Tomasz Nowicki <tn@semihalf.com>
   4 *
   5 * This program is free software; you can redistribute it and/or modify it
   6 * under the terms and conditions of the GNU General Public License,
   7 * version 2, as published by the Free Software Foundation.
   8 *
   9 * This program is distributed in the hope it will be useful, but WITHOUT
  10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12 * more details.
  13 *
  14 * You should have received a copy of the GNU General Public License along with
  15 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
  16 * Place - Suite 330, Boston, MA 02111-1307 USA.
  17 */
  18
  19#ifndef __ACPI_IORT_H__
  20#define __ACPI_IORT_H__
  21
  22#include <linux/acpi.h>
  23#include <linux/fwnode.h>
  24#include <linux/irqdomain.h>
  25
  26#define IORT_IRQ_MASK(irq)              (irq & 0xffffffffULL)
  27#define IORT_IRQ_TRIGGER_MASK(irq)      ((irq >> 32) & 0xffffffffULL)
  28
  29/*
  30 * PMCG model identifiers for use in smmu pmu driver. Please note
  31 * that this is purely for the use of software and has nothing to
  32 * do with hardware or with IORT specification.
  33 */
  34#define IORT_SMMU_V3_PMCG_GENERIC        0x00000000 /* Generic SMMUv3 PMCG */
  35
  36int iort_register_domain_token(int trans_id, phys_addr_t base,
  37                               struct fwnode_handle *fw_node);
  38void iort_deregister_domain_token(int trans_id);
  39struct fwnode_handle *iort_find_domain_token(int trans_id);
  40#ifdef CONFIG_ACPI_IORT
  41void acpi_iort_init(void);
  42u32 iort_msi_map_id(struct device *dev, u32 id);
  43struct irq_domain *iort_get_device_domain(struct device *dev, u32 id,
  44                                          enum irq_domain_bus_token bus_token);
  45void acpi_configure_pmsi_domain(struct device *dev);
  46int iort_pmsi_get_dev_id(struct device *dev, u32 *dev_id);
  47/* IOMMU interface */
  48void iort_dma_setup(struct device *dev, u64 *dma_addr, u64 *size);
  49const struct iommu_ops *iort_iommu_configure_id(struct device *dev,
  50                                                const u32 *id_in);
  51int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head);
  52#else
  53static inline void acpi_iort_init(void) { }
  54static inline u32 iort_msi_map_id(struct device *dev, u32 id)
  55{ return id; }
  56static inline struct irq_domain *iort_get_device_domain(
  57        struct device *dev, u32 id, enum irq_domain_bus_token bus_token)
  58{ return NULL; }
  59static inline void acpi_configure_pmsi_domain(struct device *dev) { }
  60/* IOMMU interface */
  61static inline void iort_dma_setup(struct device *dev, u64 *dma_addr,
  62                                  u64 *size) { }
  63static inline const struct iommu_ops *iort_iommu_configure_id(
  64                                      struct device *dev, const u32 *id_in)
  65{ return NULL; }
  66static inline
  67int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head)
  68{ return 0; }
  69#endif
  70
  71#endif /* __ACPI_IORT_H__ */
  72