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
25 int iort_register_domain_token(int trans_id, phys_addr_t base,
26 struct fwnode_handle *fw_node);
27 void iort_deregister_domain_token(int trans_id);
28 struct fwnode_handle *iort_find_domain_token(int trans_id);
29 #ifdef CONFIG_ACPI_IORT
30 void acpi_iort_init(void);
31 u32 iort_msi_map_id(struct device *dev, u32 id);
32 struct irq_domain *iort_get_device_domain(struct device *dev, u32 id,
33 enum irq_domain_bus_token bus_token);
34 void acpi_configure_pmsi_domain(struct device *dev);
35 int iort_pmsi_get_dev_id(struct device *dev, u32 *dev_id);
36 /* IOMMU interface */
37 void iort_dma_setup(struct device *dev, u64 *dma_addr, u64 *size);
38 const struct iommu_ops *iort_iommu_configure_id(struct device *dev,
39 const u32 *id_in);
40 int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head);
41 phys_addr_t acpi_iort_dma_get_max_cpu_address(void);
42 #else
acpi_iort_init(void)43 static inline void acpi_iort_init(void) { }
iort_msi_map_id(struct device * dev,u32 id)44 static inline u32 iort_msi_map_id(struct device *dev, u32 id)
45 { return id; }
iort_get_device_domain(struct device * dev,u32 id,enum irq_domain_bus_token bus_token)46 static inline struct irq_domain *iort_get_device_domain(
47 struct device *dev, u32 id, enum irq_domain_bus_token bus_token)
48 { return NULL; }
acpi_configure_pmsi_domain(struct device * dev)49 static inline void acpi_configure_pmsi_domain(struct device *dev) { }
50 /* IOMMU interface */
iort_dma_setup(struct device * dev,u64 * dma_addr,u64 * size)51 static inline void iort_dma_setup(struct device *dev, u64 *dma_addr,
52 u64 *size) { }
iort_iommu_configure_id(struct device * dev,const u32 * id_in)53 static inline const struct iommu_ops *iort_iommu_configure_id(
54 struct device *dev, const u32 *id_in)
55 { return NULL; }
56 static inline
iort_iommu_msi_get_resv_regions(struct device * dev,struct list_head * head)57 int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head)
58 { return 0; }
59
acpi_iort_dma_get_max_cpu_address(void)60 static inline phys_addr_t acpi_iort_dma_get_max_cpu_address(void)
61 { return PHYS_ADDR_MAX; }
62 #endif
63
64 #endif /* __ACPI_IORT_H__ */
65