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 void iort_get_rmr_sids(struct fwnode_handle *iommu_fwnode,
37 		       struct list_head *head);
38 void iort_put_rmr_sids(struct fwnode_handle *iommu_fwnode,
39 		       struct list_head *head);
40 /* IOMMU interface */
41 int iort_dma_get_ranges(struct device *dev, u64 *size);
42 int iort_iommu_configure_id(struct device *dev, const u32 *id_in);
43 void iort_iommu_get_resv_regions(struct device *dev, struct list_head *head);
44 phys_addr_t acpi_iort_dma_get_max_cpu_address(void);
45 #else
acpi_iort_init(void)46 static inline void acpi_iort_init(void) { }
iort_msi_map_id(struct device * dev,u32 id)47 static inline u32 iort_msi_map_id(struct device *dev, u32 id)
48 { return id; }
iort_get_device_domain(struct device * dev,u32 id,enum irq_domain_bus_token bus_token)49 static inline struct irq_domain *iort_get_device_domain(
50 	struct device *dev, u32 id, enum irq_domain_bus_token bus_token)
51 { return NULL; }
acpi_configure_pmsi_domain(struct device * dev)52 static inline void acpi_configure_pmsi_domain(struct device *dev) { }
53 static inline
iort_get_rmr_sids(struct fwnode_handle * iommu_fwnode,struct list_head * head)54 void iort_get_rmr_sids(struct fwnode_handle *iommu_fwnode, struct list_head *head) { }
55 static inline
iort_put_rmr_sids(struct fwnode_handle * iommu_fwnode,struct list_head * head)56 void iort_put_rmr_sids(struct fwnode_handle *iommu_fwnode, struct list_head *head) { }
57 /* IOMMU interface */
iort_dma_get_ranges(struct device * dev,u64 * size)58 static inline int iort_dma_get_ranges(struct device *dev, u64 *size)
59 { return -ENODEV; }
iort_iommu_configure_id(struct device * dev,const u32 * id_in)60 static inline int iort_iommu_configure_id(struct device *dev, const u32 *id_in)
61 { return -ENODEV; }
62 static inline
iort_iommu_get_resv_regions(struct device * dev,struct list_head * head)63 void iort_iommu_get_resv_regions(struct device *dev, struct list_head *head)
64 { }
65 
acpi_iort_dma_get_max_cpu_address(void)66 static inline phys_addr_t acpi_iort_dma_get_max_cpu_address(void)
67 { return PHYS_ADDR_MAX; }
68 #endif
69 
70 #endif /* __ACPI_IORT_H__ */
71