67c430bbaa
Only hw that supports mappable aperture would hit this path vm_fault_gtt/vm_fault_tmm, So we never hit this function remap_io_mapping() in discrete, So skip this code for non-x86 architectures. v2: use IS_ENABLED () instead of #if defined v3: move function prototypes from i915_drv.h to i915_mm.h v4: added kernel error message in stub function v5: fixed compilation warnings v6: checkpatch style Signed-off-by: Siva Mullati <siva.mullati@intel.com> Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com> Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20211208041215.763098-1-siva.mullati@intel.com
36 lines
855 B
C
36 lines
855 B
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2021 Intel Corporation
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*/
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#ifndef __I915_MM_H__
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#define __I915_MM_H__
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#include <linux/types.h>
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struct vm_area_struct;
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struct io_mapping;
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struct scatterlist;
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#if IS_ENABLED(CONFIG_X86)
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int remap_io_mapping(struct vm_area_struct *vma,
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unsigned long addr, unsigned long pfn, unsigned long size,
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struct io_mapping *iomap);
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#else
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static inline
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int remap_io_mapping(struct vm_area_struct *vma,
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unsigned long addr, unsigned long pfn, unsigned long size,
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struct io_mapping *iomap)
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{
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pr_err("Architecture has no %s() and shouldn't be calling this function\n", __func__);
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WARN_ON_ONCE(1);
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return 0;
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}
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#endif
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int remap_io_sg(struct vm_area_struct *vma,
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unsigned long addr, unsigned long size,
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struct scatterlist *sgl, resource_size_t iobase);
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#endif /* __I915_MM_H__ */
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