9913ccceda
Take a snapshot of our qcom-iommu-util module as of commit
f843a80d2c45 ("Merge "defconfig: gen3auto: Separated if_changed"") on
msm-5.15. Update minor lint warnings with respect to header inclusions
and spacing.
Change-Id: Ib33f54f081eb029ade172254a6732c49dcf1f73d
Signed-off-by: Chris Goldsworthy <quic_cgoldswo@quicinc.com>
86 lines
3.0 KiB
C
86 lines
3.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
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*/
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#ifndef __QCOM_DMA_IOMMU_GENERIC_H
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#define __QCOM_DMA_IOMMU_GENERIC_H
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#include <linux/device.h>
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#include <linux/dma-direction.h>
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#include <linux/pci.h>
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#ifdef CONFIG_IOMMU_IO_PGTABLE_FAST
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bool qcom_dma_iommu_is_ready(void);
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extern int __init qcom_dma_iommu_generic_driver_init(void);
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extern void qcom_dma_iommu_generic_driver_exit(void);
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struct pci_host_bridge *qcom_pci_find_host_bridge(struct pci_bus *bus);
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void qcom_arch_sync_dma_for_device(phys_addr_t paddr, size_t size,
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enum dma_data_direction dir);
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void qcom_arch_sync_dma_for_cpu(phys_addr_t paddr, size_t size,
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enum dma_data_direction dir);
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void qcom_arch_dma_prep_coherent(struct page *page, size_t size);
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/* kernel/dma/contiguous.c */
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struct page *qcom_dma_alloc_from_contiguous(struct device *dev, size_t count,
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unsigned int align, bool no_warn);
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bool qcom_dma_release_from_contiguous(struct device *dev, struct page *pages,
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int count);
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struct page *qcom_dma_alloc_contiguous(struct device *dev, size_t size,
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gfp_t gfp);
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void qcom_dma_free_contiguous(struct device *dev, struct page *page,
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size_t size);
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/* kernel/dma/remap.c */
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struct page **qcom_dma_common_find_pages(void *cpu_addr);
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void *qcom_dma_common_pages_remap(struct page **pages, size_t size,
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pgprot_t prot, const void *caller);
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void *qcom_dma_common_contiguous_remap(struct page *page, size_t size,
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pgprot_t prot, const void *caller);
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void qcom_dma_common_free_remap(void *cpu_addr, size_t size);
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void *qcom_dma_alloc_from_pool(struct device *dev, size_t size,
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struct page **ret_page, gfp_t flags);
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bool qcom_dma_free_from_pool(struct device *dev, void *start, size_t size);
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int qcom_dma_mmap_from_dev_coherent(struct device *dev,
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struct vm_area_struct *vma, void *vaddr, size_t size, int *ret);
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/* kernel/dma/mapping.c */
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pgprot_t qcom_dma_pgprot(struct device *dev, pgprot_t prot,
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unsigned long attrs);
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/* DMA-IOMMU utilities */
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int qcom_dma_info_to_prot(enum dma_data_direction dir, bool coherent,
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unsigned long attrs);
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size_t qcom_iommu_dma_prepare_map_sg(struct device *dev, struct iova_domain *iovad,
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struct scatterlist *sg, int nents);
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int qcom_iommu_dma_finalise_sg(struct device *dev, struct scatterlist *sg, int nents,
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dma_addr_t dma_addr);
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void qcom_iommu_dma_invalidate_sg(struct scatterlist *sg, int nents);
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int qcom_iommu_dma_mmap(struct device *dev, struct vm_area_struct *vma,
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void *cpu_addr, dma_addr_t dma_addr, size_t size,
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unsigned long attrs);
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int qcom_iommu_dma_get_sgtable(struct device *dev, struct sg_table *sgt,
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void *cpu_addr, dma_addr_t dma_addr, size_t size,
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unsigned long attrs);
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#else /*CONFIG_IOMMU_IO_PGTABLE_FAST*/
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static inline bool qcom_dma_iommu_is_ready(void)
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{
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return true;
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}
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static inline int __init qcom_dma_iommu_generic_driver_init(void)
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{
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return 0;
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}
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static inline void qcom_dma_iommu_generic_driver_exit(void) {}
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#endif /*CONFIG_IOMMU_IO_PGTABLE_FAST*/
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#endif /* __QCOM_DMA_IOMMU_GENERIC_H */
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