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