[PATCH] ASoC: SOF: amd: Enable cache for AMD Rembrandt platform

[PATCH] ASoC: SOF: amd: Enable cache for AMD Rembrandt platform

[V sujith kumar Reddy]

Enable DSP cache for ACP memory

Signed-off-by: V sujith kumar Reddy <Vsujithkumar.Reddy@amd.com>
---
 sound/soc/sof/amd/acp-dsp-offset.h | 4 ++++
 sound/soc/sof/amd/acp-loader.c     | 7 +++++++
 sound/soc/sof/amd/acp.h            | 2 ++
 3 files changed, 13 insertions(+)

diff --git a/sound/soc/sof/amd/acp-dsp-offset.h b/sound/soc/sof/amd/acp-dsp-offset.h
index de5726251dc6..920155dee819 100644
--- a/sound/soc/sof/amd/acp-dsp-offset.h
+++ b/sound/soc/sof/amd/acp-dsp-offset.h
@@ -85,4 +85,8 @@
 
 #define ACP_SCRATCH_REG_0			0x10000
 #define ACP6X_DSP_FUSION_RUNSTALL		0x0644
+
+/* Cache window registers */
+#define ACP_DSP0_CACHE_OFFSET0			0x0420
+#define ACP_DSP0_CACHE_SIZE0			0x0424
 #endif
diff --git a/sound/soc/sof/amd/acp-loader.c b/sound/soc/sof/amd/acp-loader.c
index 090c8b18c83c..a4bce5a3ae48 100644
--- a/sound/soc/sof/amd/acp-loader.c
+++ b/sound/soc/sof/amd/acp-loader.c
@@ -151,6 +151,7 @@ static void configure_pte_for_fw_loading(int type, int num_pages, struct acp_dev
 int acp_dsp_pre_fw_run(struct snd_sof_dev *sdev)
 {
 	struct pci_dev *pci = to_pci_dev(sdev->dev);
+	const struct sof_amd_acp_desc *desc = get_chip_info(sdev->pdata);
 	struct acp_dev_data *adata;
 	unsigned int src_addr, size_fw;
 	u32 page_count, dma_size;
@@ -183,6 +184,12 @@ int acp_dsp_pre_fw_run(struct snd_sof_dev *sdev)
 	if (ret < 0)
 		dev_err(sdev->dev, "acp dma transfer status: %d\n", ret);
 
+	if (desc->rev > 3) {
+		/* Cache Window enable */
+		snd_sof_dsp_write(sdev, ACP_DSP_BAR, ACP_DSP0_CACHE_OFFSET0, desc->sram_pte_offset);
+		snd_sof_dsp_write(sdev, ACP_DSP_BAR, ACP_DSP0_CACHE_SIZE0, SRAM1_SIZE | BIT(31));
+	}
+
 	/* Free memory once DMA is complete */
 	dma_size =  (PAGE_ALIGN(sdev->basefw.fw->size) >> PAGE_SHIFT) * ACP_PAGE_SIZE;
 	dma_free_coherent(&pci->dev, dma_size, adata->bin_buf, adata->sha_dma_addr);
diff --git a/sound/soc/sof/amd/acp.h b/sound/soc/sof/amd/acp.h
index 09e16ef8afa0..4314094a97fd 100644
--- a/sound/soc/sof/amd/acp.h
+++ b/sound/soc/sof/amd/acp.h
@@ -72,6 +72,8 @@
 #define EXCEPT_MAX_HDR_SIZE			0x400
 #define AMD_STACK_DUMP_SIZE			32
 
+#define SRAM1_SIZE				0x13A000
+
 enum clock_source {
 	ACP_CLOCK_96M = 0,
 	ACP_CLOCK_48M,
-- 
2.25.1

Re: [PATCH] ASoC: SOF: amd: Enable cache for AMD Rembrandt platform

[Mark Brown]

On Tue, 13 Dec 2022 12:46:37 +0530, V sujith kumar Reddy wrote:
> Enable DSP cache for ACP memory
> 
> 

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[1/1] ASoC: SOF: amd: Enable cache for AMD Rembrandt platform
      commit: b5ba646142195d63dd1aae69bc15457fca5aeb78

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark