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Diffstat (limited to 'sound/soc/sof/utils.c')
| -rw-r--r-- | sound/soc/sof/utils.c | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/sound/soc/sof/utils.c b/sound/soc/sof/utils.c deleted file mode 100644 index 9831eb57df6c..000000000000 --- a/sound/soc/sof/utils.c +++ /dev/null @@ -1,172 +0,0 @@ -// SPDX-License-Identifier: (GPL-2.0 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) 2018 Intel Corporation. All rights reserved. -// -// Author: Keyon Jie <yang.jie@linux.intel.com> -// - -#include <linux/io-64-nonatomic-lo-hi.h> -#include <linux/platform_device.h> -#include <asm/unaligned.h> -#include <sound/soc.h> -#include <sound/sof.h> -#include "sof-priv.h" - -/* - * Register IO - * - * The sof_io_xyz() wrappers are typically referenced in snd_sof_dsp_ops - * structures and cannot be inlined. - */ - -void sof_io_write(struct snd_sof_dev *sdev, void __iomem *addr, u32 value) -{ - writel(value, addr); -} -EXPORT_SYMBOL(sof_io_write); - -u32 sof_io_read(struct snd_sof_dev *sdev, void __iomem *addr) -{ - return readl(addr); -} -EXPORT_SYMBOL(sof_io_read); - -void sof_io_write64(struct snd_sof_dev *sdev, void __iomem *addr, u64 value) -{ - writeq(value, addr); -} -EXPORT_SYMBOL(sof_io_write64); - -u64 sof_io_read64(struct snd_sof_dev *sdev, void __iomem *addr) -{ - return readq(addr); -} -EXPORT_SYMBOL(sof_io_read64); - -/* - * IPC Mailbox IO - */ - -void sof_mailbox_write(struct snd_sof_dev *sdev, u32 offset, - void *message, size_t bytes) -{ - void __iomem *dest = sdev->bar[sdev->mailbox_bar] + offset; - - memcpy_toio(dest, message, bytes); -} -EXPORT_SYMBOL(sof_mailbox_write); - -void sof_mailbox_read(struct snd_sof_dev *sdev, u32 offset, - void *message, size_t bytes) -{ - void __iomem *src = sdev->bar[sdev->mailbox_bar] + offset; - - memcpy_fromio(message, src, bytes); -} -EXPORT_SYMBOL(sof_mailbox_read); - -/* - * Memory copy. - */ - -void sof_block_write(struct snd_sof_dev *sdev, u32 bar, u32 offset, void *src, - size_t size) -{ - void __iomem *dest = sdev->bar[bar] + offset; - const u8 *src_byte = src; - u32 affected_mask; - u32 tmp; - int m, n; - - m = size / 4; - n = size % 4; - - /* __iowrite32_copy use 32bit size values so divide by 4 */ - __iowrite32_copy(dest, src, m); - - if (n) { - affected_mask = (1 << (8 * n)) - 1; - - /* first read the 32bit data of dest, then change affected - * bytes, and write back to dest. For unaffected bytes, it - * should not be changed - */ - tmp = ioread32(dest + m * 4); - tmp &= ~affected_mask; - - tmp |= *(u32 *)(src_byte + m * 4) & affected_mask; - iowrite32(tmp, dest + m * 4); - } -} -EXPORT_SYMBOL(sof_block_write); - -void sof_block_read(struct snd_sof_dev *sdev, u32 bar, u32 offset, void *dest, - size_t size) -{ - void __iomem *src = sdev->bar[bar] + offset; - - memcpy_fromio(dest, src, size); -} -EXPORT_SYMBOL(sof_block_read); - -/* - * Generic buffer page table creation. - * Take the each physical page address and drop the least significant unused - * bits from each (based on PAGE_SIZE). Then pack valid page address bits - * into compressed page table. - */ - -int snd_sof_create_page_table(struct device *dev, - struct snd_dma_buffer *dmab, - unsigned char *page_table, size_t size) -{ - int i, pages; - - pages = snd_sgbuf_aligned_pages(size); - - dev_dbg(dev, "generating page table for %p size 0x%zx pages %d\n", - dmab->area, size, pages); - - for (i = 0; i < pages; i++) { - /* - * The number of valid address bits for each page is 20. - * idx determines the byte position within page_table - * where the current page's address is stored - * in the compressed page_table. - * This can be calculated by multiplying the page number by 2.5. - */ - u32 idx = (5 * i) >> 1; - u32 pfn = snd_sgbuf_get_addr(dmab, i * PAGE_SIZE) >> PAGE_SHIFT; - u8 *pg_table; - - dev_vdbg(dev, "pfn i %i idx %d pfn %x\n", i, idx, pfn); - - pg_table = (u8 *)(page_table + idx); - - /* - * pagetable compression: - * byte 0 byte 1 byte 2 byte 3 byte 4 byte 5 - * ___________pfn 0__________ __________pfn 1___________ _pfn 2... - * .... .... .... .... .... .... .... .... .... .... .... - * It is created by: - * 1. set current location to 0, PFN index i to 0 - * 2. put pfn[i] at current location in Little Endian byte order - * 3. calculate an intermediate value as - * x = (pfn[i+1] << 4) | (pfn[i] & 0xf) - * 4. put x at offset (current location + 2) in LE byte order - * 5. increment current location by 5 bytes, increment i by 2 - * 6. continue to (2) - */ - if (i & 1) - put_unaligned_le32((pg_table[0] & 0xf) | pfn << 4, - pg_table); - else - put_unaligned_le32(pfn, pg_table); - } - - return pages; -} -EXPORT_SYMBOL(snd_sof_create_page_table); |