// 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 <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);