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127 lines
2.8 KiB
127 lines
2.8 KiB
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) |
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// |
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// This file is provided under a dual BSD/GPLv2 license. When using or |
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// redistributing this file, you may do so under either license. |
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// |
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// Copyright(c) 2018-2022 Intel Corporation. All rights reserved. |
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// |
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// Author: Keyon Jie <[email protected]> |
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// |
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#include <linux/io-64-nonatomic-lo-hi.h> |
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#include <linux/platform_device.h> |
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#include <asm/unaligned.h> |
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#include <sound/soc.h> |
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#include <sound/sof.h> |
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#include "sof-priv.h" |
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#include "ops.h" |
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/* |
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* Register IO |
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* |
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* The sof_io_xyz() wrappers are typically referenced in snd_sof_dsp_ops |
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* structures and cannot be inlined. |
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*/ |
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void sof_io_write(struct snd_sof_dev *sdev, void __iomem *addr, u32 value) |
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{ |
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writel(value, addr); |
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} |
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EXPORT_SYMBOL(sof_io_write); |
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u32 sof_io_read(struct snd_sof_dev *sdev, void __iomem *addr) |
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{ |
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return readl(addr); |
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} |
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EXPORT_SYMBOL(sof_io_read); |
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void sof_io_write64(struct snd_sof_dev *sdev, void __iomem *addr, u64 value) |
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{ |
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writeq(value, addr); |
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} |
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EXPORT_SYMBOL(sof_io_write64); |
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u64 sof_io_read64(struct snd_sof_dev *sdev, void __iomem *addr) |
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{ |
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return readq(addr); |
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} |
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EXPORT_SYMBOL(sof_io_read64); |
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/* |
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* IPC Mailbox IO |
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*/ |
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void sof_mailbox_write(struct snd_sof_dev *sdev, u32 offset, |
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void *message, size_t bytes) |
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{ |
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void __iomem *dest = sdev->bar[sdev->mailbox_bar] + offset; |
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memcpy_toio(dest, message, bytes); |
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} |
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EXPORT_SYMBOL(sof_mailbox_write); |
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void sof_mailbox_read(struct snd_sof_dev *sdev, u32 offset, |
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void *message, size_t bytes) |
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{ |
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void __iomem *src = sdev->bar[sdev->mailbox_bar] + offset; |
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memcpy_fromio(message, src, bytes); |
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} |
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EXPORT_SYMBOL(sof_mailbox_read); |
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/* |
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* Memory copy. |
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*/ |
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int sof_block_write(struct snd_sof_dev *sdev, enum snd_sof_fw_blk_type blk_type, |
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u32 offset, void *src, size_t size) |
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{ |
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int bar = snd_sof_dsp_get_bar_index(sdev, blk_type); |
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const u8 *src_byte = src; |
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void __iomem *dest; |
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u32 affected_mask; |
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u32 tmp; |
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int m, n; |
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if (bar < 0) |
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return bar; |
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dest = sdev->bar[bar] + offset; |
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m = size / 4; |
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n = size % 4; |
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/* __iowrite32_copy use 32bit size values so divide by 4 */ |
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__iowrite32_copy(dest, src, m); |
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if (n) { |
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affected_mask = (1 << (8 * n)) - 1; |
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/* first read the 32bit data of dest, then change affected |
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* bytes, and write back to dest. For unaffected bytes, it |
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* should not be changed |
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*/ |
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tmp = ioread32(dest + m * 4); |
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tmp &= ~affected_mask; |
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tmp |= *(u32 *)(src_byte + m * 4) & affected_mask; |
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iowrite32(tmp, dest + m * 4); |
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} |
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return 0; |
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} |
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EXPORT_SYMBOL(sof_block_write); |
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int sof_block_read(struct snd_sof_dev *sdev, enum snd_sof_fw_blk_type blk_type, |
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u32 offset, void *dest, size_t size) |
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{ |
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int bar = snd_sof_dsp_get_bar_index(sdev, blk_type); |
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if (bar < 0) |
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return bar; |
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memcpy_fromio(dest, sdev->bar[bar] + offset, size); |
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return 0; |
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} |
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EXPORT_SYMBOL(sof_block_read);
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