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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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1234567891011121314151617181920212223242526272829/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) *//* * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. * * Copyright(c) 2022 Intel Corporation */
#ifndef __SOC_SOF_UTILS_H#define __SOC_SOF_UTILS_H
struct snd_dma_buffer;struct device;
/* * Number of PFNs which can be stored in a page table of @bytes size. * The PFNs are compressed to 2.5 bytes each but they are written with 32 bit * accesses, therefore the last PFN can reach up to 3 bytes past the space it * needs for itself. */#define SOF_PAGE_TABLE_MAX_PFNS(bytes) \ (((((bytes) - sizeof(u32)) << 1) + 1) / 5 + 1)
int snd_sof_create_page_table(struct device *dev, struct snd_dma_buffer *dmab, struct snd_dma_buffer *page_table, size_t size);
#endif