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 #define IORT_SMMU_V3_PMCG_HISI_HIP09 0x00000002 /* HiSilicon HIP09 PMCG */
25
26 int iort_register_domain_token(int trans_id, phys_addr_t base,
27 struct fwnode_handle *fw_node);
28 void iort_deregister_domain_token(int trans_id);
29 struct fwnode_handle *iort_find_domain_token(int trans_id);
30 int iort_pmsi_get_dev_id(struct device *dev, u32 *dev_id);
31
32 #ifdef CONFIG_ACPI_IORT
33 u32 iort_msi_map_id(struct device *dev, u32 id);
34 struct irq_domain *iort_get_device_domain(struct device *dev, u32 id,
35 enum irq_domain_bus_token bus_token);
36 void acpi_configure_pmsi_domain(struct device *dev);
37 void iort_get_rmr_sids(struct fwnode_handle *iommu_fwnode,
38 struct list_head *head);
39 void iort_put_rmr_sids(struct fwnode_handle *iommu_fwnode,
40 struct list_head *head);
41 /* IOMMU interface */
42 int iort_dma_get_ranges(struct device *dev, u64 *limit);
43 int iort_iommu_configure_id(struct device *dev, const u32 *id_in);
44 void iort_iommu_get_resv_regions(struct device *dev, struct list_head *head);
45 phys_addr_t acpi_iort_dma_get_max_cpu_address(void);
46 #else
47 static inline u32 iort_msi_map_id(struct device *dev, u32 id)
48 { return id; }
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; }
52 static inline void acpi_configure_pmsi_domain(struct device *dev) { }
53 static inline
54 void iort_get_rmr_sids(struct fwnode_handle *iommu_fwnode, struct list_head *head) { }
55 static inline
56 void iort_put_rmr_sids(struct fwnode_handle *iommu_fwnode, struct list_head *head) { }
57 /* IOMMU interface */
58 static inline int iort_dma_get_ranges(struct device *dev, u64 *limit)
59 { return -ENODEV; }
60 static inline int iort_iommu_configure_id(struct device *dev, const u32 *id_in)
61 { return -ENODEV; }
62 static inline
63 void iort_iommu_get_resv_regions(struct device *dev, struct list_head *head)
64 { }
65
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
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