778d88fe9b
Log IOMMU client name in debug structures so that tools can directly read the IOMMU client name without having to access other structures outside of the IOMMU debug attachments structure. Change-Id: I36c13fd63e6ca7260b69d01573126e276eb5835b Signed-off-by: Isaac J. Manjarres <isaacm@codeaurora.org>
52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/* Copyright (c) 2020, The Linux Foundation. All rights reserved. */
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#ifndef __LINUX_QTI_IOMMU_LOGGER_H
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#define __LINUX_QTI_IOMMU_LOGGER_H
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#include <linux/io-pgtable.h>
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enum iommu_logger_pgtable_fmt {
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IOMMU_LOGGER_ARM_32_LPAE_S1,
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IOMMU_LOGGER_ARM_64_LPAE_S1,
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IOMMU_LOGGER_MAX_PGTABLE_FMTS,
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};
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/*
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* Each group may have more than one domain; but each domain may
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* only have one group.
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*/
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struct iommu_debug_attachment {
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struct iommu_domain *domain;
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struct iommu_group *group;
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char *client_name;
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enum iommu_logger_pgtable_fmt fmt;
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unsigned int levels;
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/*
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* Virtual addresses of the top-level page tables are stored here,
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* as they are more useful for debug tools than physical addresses.
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*/
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void *ttbr0;
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void *ttbr1;
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struct list_head list;
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};
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#if IS_ENABLED(CONFIG_QTI_IOMMU_SUPPORT)
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int iommu_logger_register(struct iommu_debug_attachment **a,
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struct iommu_domain *domain, struct device *dev,
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struct io_pgtable *iop);
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void iommu_logger_unregister(struct iommu_debug_attachment *a);
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#else
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static inline int iommu_logger_register(struct iommu_debug_attachment **a,
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struct iommu_domain *domain,
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struct device *dev,
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struct io_pgtable *iop)
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{
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return 0;
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}
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static inline void iommu_logger_unregister(struct iommu_debug_attachment *a) {}
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#endif /* CONFIG_QTI_IOMMU_LOGGER */
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#endif /* __LINUX_QTI_IOMMU_LOGGER_H */
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