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ASoC: SOF: mediatek: mt8186 modify dram type as non-cache

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To prevent incorrect access between the host and DSP sides, we need to
modify DRAM as a non-cache memory type. Additionally, we can retrieve
the size of shared DMA from the device tree.

Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
Reviewed-by: Yaochun Hung <yc.hung@mediatek.com>
Reviewed-by: Kuan-Hsun Cheng <Allen-KH.Cheng@mediatek.com>
Link: https://lore.kernel.org/r/20230803075028.32170-1-trevor.wu@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Trevor Wu 2023-08-03 15:50:28 +08:00 committed by Mark Brown
parent 9f0d4d47c7
commit 1d54134df4
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GPG Key ID: 24D68B725D5487D0
1 changed files with 23 additions and 17 deletions
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40
sound/soc/sof/mediatek/mt8186/mt8186.c
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@ -111,6 +111,14 @@ static int platform_parse_resource(struct platform_device *pdev, void *data)
dev_dbg(dev, "DMA %pR\n", &res);
adsp->pa_shared_dram = (phys_addr_t)res.start;
adsp->shared_size = resource_size(&res);
if (adsp->pa_shared_dram & DRAM_REMAP_MASK) {
dev_err(dev, "adsp shared dma memory(%#x) is not 4K-aligned\n",
(u32)adsp->pa_shared_dram);
return -EINVAL;
}
ret = of_reserved_mem_device_init(dev);
if (ret) {
dev_err(dev, "of_reserved_mem_device_init failed\n");
@ -244,23 +252,18 @@ static int adsp_shared_base_ioremap(struct platform_device *pdev, void *data)
{
struct device *dev = &pdev->dev;
struct mtk_adsp_chip_info *adsp = data;
u32 shared_size;
/* remap shared-dram base to be non-cachable */
shared_size = TOTAL_SIZE_SHARED_DRAM_FROM_TAIL;
adsp->pa_shared_dram = adsp->pa_dram + adsp->dramsize - shared_size;
if (adsp->va_dram) {
adsp->shared_dram = adsp->va_dram + DSP_DRAM_SIZE - shared_size;
} else {
adsp->shared_dram = devm_ioremap(dev, adsp->pa_shared_dram,
shared_size);
if (!adsp->shared_dram) {
dev_err(dev, "ioremap failed for shared DRAM\n");
return -ENOMEM;
}
adsp->shared_dram = devm_ioremap(dev, adsp->pa_shared_dram,
adsp->shared_size);
if (!adsp->shared_dram) {
dev_err(dev, "failed to ioremap base %pa size %#x\n",
adsp->shared_dram, adsp->shared_size);
return -ENOMEM;
}
dev_dbg(dev, "shared-dram vbase=%p, phy addr :%pa, size=%#x\n",
adsp->shared_dram, &adsp->pa_shared_dram, shared_size);
dev_dbg(dev, "shared-dram vbase=%p, phy addr :%pa, size=%#x\n",
adsp->shared_dram, &adsp->pa_shared_dram, adsp->shared_size);
return 0;
}
@ -307,9 +310,12 @@ static int mt8186_dsp_probe(struct snd_sof_dev *sdev)
return -ENOMEM;
}
sdev->bar[SOF_FW_BLK_TYPE_SRAM] = devm_ioremap_wc(sdev->dev,
priv->adsp->pa_dram,
priv->adsp->dramsize);
priv->adsp->va_sram = sdev->bar[SOF_FW_BLK_TYPE_IRAM];
sdev->bar[SOF_FW_BLK_TYPE_SRAM] = devm_ioremap(sdev->dev,
priv->adsp->pa_dram,
priv->adsp->dramsize);
if (!sdev->bar[SOF_FW_BLK_TYPE_SRAM]) {
dev_err(sdev->dev, "failed to ioremap base %pa size %#x\n",
&priv->adsp->pa_dram, priv->adsp->dramsize);