tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
29int iort_register_domain_token(int trans_id, phys_addr_t base,
30 struct fwnode_handle *fw_node);
31void iort_deregister_domain_token(int trans_id);
32struct fwnode_handle *iort_find_domain_token(int trans_id);
33#ifdef CONFIG_ACPI_IORT
34void acpi_iort_init(void);
35u32 iort_msi_map_rid(struct device *dev, u32 req_id);
36struct irq_domain *iort_get_device_domain(struct device *dev, u32 req_id);
37void acpi_configure_pmsi_domain(struct device *dev);
38int iort_pmsi_get_dev_id(struct device *dev, u32 *dev_id);
39/* IOMMU interface */
40void iort_dma_setup(struct device *dev, u64 *dma_addr, u64 *size);
41const struct iommu_ops *iort_iommu_configure(struct device *dev);
42int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head);
43#else
44static inline void acpi_iort_init(void) { }
45static inline u32 iort_msi_map_rid(struct device *dev, u32 req_id)
46{ return req_id; }
47static inline struct irq_domain *iort_get_device_domain(struct device *dev,
48 u32 req_id)
49{ return NULL; }
50static inline void acpi_configure_pmsi_domain(struct device *dev) { }
51/* IOMMU interface */
52static inline void iort_dma_setup(struct device *dev, u64 *dma_addr,
53 u64 *size) { }
54static inline const struct iommu_ops *iort_iommu_configure(
55 struct device *dev)
56{ return NULL; }
57static inline
58int iort_iommu_msi_get_resv_regions(struct device *dev, struct list_head *head)
59{ return 0; }
60#endif
61
62#endif /* __ACPI_IORT_H__ */