1 files changed, 257 insertions, 0 deletions

diff --git a/sound/soc/sof/amd/acp-loader.c b/sound/soc/sof/amd/acp-loader.c
new file mode 100644
index 0000000000..a427673cfb
--- /dev/null
+++ b/sound/soc/sof/amd/acp-loader.c
@@ -0,0 +1,257 @@
+// SPDX-License-Identifier: (GPL-2.0-only 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) 2021, 2023 Advanced Micro Devices, Inc.
+//
+// Authors: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
+
+/*
+ * Hardware interface for ACP DSP Firmware binaries loader
+ */
+
+#include <linux/firmware.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+
+#include "../ops.h"
+#include "acp-dsp-offset.h"
+#include "acp.h"
+
+#define FW_BIN		0
+#define FW_DATA_BIN	1
+
+#define FW_BIN_PTE_OFFSET	0x00
+#define FW_DATA_BIN_PTE_OFFSET	0x08
+
+#define ACP_DSP_RUN	0x00
+
+int acp_dsp_block_read(struct snd_sof_dev *sdev, enum snd_sof_fw_blk_type blk_type,
+		       u32 offset, void *dest, size_t size)
+{
+	const struct sof_amd_acp_desc *desc = get_chip_info(sdev->pdata);
+	switch (blk_type) {
+	case SOF_FW_BLK_TYPE_SRAM:
+		offset = offset - desc->sram_pte_offset;
+		memcpy_from_scratch(sdev, offset, dest, size);
+		break;
+	default:
+		dev_err(sdev->dev, "bad blk type 0x%x\n", blk_type);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_NS(acp_dsp_block_read, SND_SOC_SOF_AMD_COMMON);
+
+int acp_dsp_block_write(struct snd_sof_dev *sdev, enum snd_sof_fw_blk_type blk_type,
+			u32 offset, void *src, size_t size)
+{
+	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;
+	void *dest;
+	u32 dma_size, page_count;
+	unsigned int size_fw;
+
+	adata = sdev->pdata->hw_pdata;
+
+	switch (blk_type) {
+	case SOF_FW_BLK_TYPE_IRAM:
+		if (!adata->bin_buf) {
+			size_fw = sdev->basefw.fw->size;
+			page_count = PAGE_ALIGN(size_fw) >> PAGE_SHIFT;
+			dma_size = page_count * ACP_PAGE_SIZE;
+			adata->bin_buf = dma_alloc_coherent(&pci->dev, dma_size,
+							    &adata->sha_dma_addr,
+							    GFP_ATOMIC);
+			if (!adata->bin_buf)
+				return -ENOMEM;
+		}
+		adata->fw_bin_size = size + offset;
+		dest = adata->bin_buf + offset;
+		break;
+	case SOF_FW_BLK_TYPE_DRAM:
+		if (!adata->data_buf) {
+			adata->data_buf = dma_alloc_coherent(&pci->dev,
+							     ACP_DEFAULT_DRAM_LENGTH,
+							     &adata->dma_addr,
+							     GFP_ATOMIC);
+			if (!adata->data_buf)
+				return -ENOMEM;
+		}
+		dest = adata->data_buf + offset;
+		adata->fw_data_bin_size = size + offset;
+		break;
+	case SOF_FW_BLK_TYPE_SRAM:
+		offset = offset - desc->sram_pte_offset;
+		memcpy_to_scratch(sdev, offset, src, size);
+		return 0;
+	default:
+		dev_err(sdev->dev, "bad blk type 0x%x\n", blk_type);
+		return -EINVAL;
+	}
+
+	memcpy(dest, src, size);
+	return 0;
+}
+EXPORT_SYMBOL_NS(acp_dsp_block_write, SND_SOC_SOF_AMD_COMMON);
+
+int acp_get_bar_index(struct snd_sof_dev *sdev, u32 type)
+{
+	return type;
+}
+EXPORT_SYMBOL_NS(acp_get_bar_index, SND_SOC_SOF_AMD_COMMON);
+
+static void configure_pte_for_fw_loading(int type, int num_pages, struct acp_dev_data *adata)
+{
+	struct snd_sof_dev *sdev = adata->dev;
+	const struct sof_amd_acp_desc *desc = get_chip_info(sdev->pdata);
+	unsigned int low, high;
+	dma_addr_t addr;
+	u16 page_idx;
+	u32 offset;
+
+	switch (type) {
+	case FW_BIN:
+		offset = FW_BIN_PTE_OFFSET;
+		addr = adata->sha_dma_addr;
+		break;
+	case FW_DATA_BIN:
+		offset = adata->fw_bin_page_count * 8;
+		addr = adata->dma_addr;
+		break;
+	default:
+		dev_err(sdev->dev, "Invalid data type %x\n", type);
+		return;
+	}
+
+	/* Group Enable */
+	snd_sof_dsp_write(sdev, ACP_DSP_BAR, ACPAXI2AXI_ATU_BASE_ADDR_GRP_1,
+			  desc->sram_pte_offset | BIT(31));
+	snd_sof_dsp_write(sdev, ACP_DSP_BAR, ACPAXI2AXI_ATU_PAGE_SIZE_GRP_1,
+			  PAGE_SIZE_4K_ENABLE);
+
+	for (page_idx = 0; page_idx < num_pages; page_idx++) {
+		low = lower_32_bits(addr);
+		high = upper_32_bits(addr);
+		snd_sof_dsp_write(sdev, ACP_DSP_BAR, ACP_SCRATCH_REG_0 + offset, low);
+		high |= BIT(31);
+		snd_sof_dsp_write(sdev, ACP_DSP_BAR, ACP_SCRATCH_REG_0 + offset + 4, high);
+		offset += 8;
+		addr += PAGE_SIZE;
+	}
+
+	/* Flush ATU Cache after PTE Update */
+	snd_sof_dsp_write(sdev, ACP_DSP_BAR, ACPAXI2AXI_ATU_CTRL, ACP_ATU_CACHE_INVALID);
+}
+
+/* pre fw run operations */
+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;
+	int ret;
+
+	adata = sdev->pdata->hw_pdata;
+
+	if (adata->signed_fw_image)
+		size_fw = adata->fw_bin_size - ACP_FIRMWARE_SIGNATURE;
+	else
+		size_fw = adata->fw_bin_size;
+
+	page_count = PAGE_ALIGN(size_fw) >> PAGE_SHIFT;
+	adata->fw_bin_page_count = page_count;
+
+	configure_pte_for_fw_loading(FW_BIN, page_count, adata);
+	ret = configure_and_run_sha_dma(adata, adata->bin_buf, ACP_SYSTEM_MEMORY_WINDOW,
+					ACP_IRAM_BASE_ADDRESS, size_fw);
+	if (ret < 0) {
+		dev_err(sdev->dev, "SHA DMA transfer failed status: %d\n", ret);
+		return ret;
+	}
+	configure_pte_for_fw_loading(FW_DATA_BIN, ACP_DRAM_PAGE_COUNT, adata);
+
+	src_addr = ACP_SYSTEM_MEMORY_WINDOW + page_count * ACP_PAGE_SIZE;
+	ret = configure_and_run_dma(adata, src_addr, ACP_DATA_RAM_BASE_ADDRESS,
+				    adata->fw_data_bin_size);
+	if (ret < 0) {
+		dev_err(sdev->dev, "acp dma configuration failed: %d\n", ret);
+		return ret;
+	}
+
+	ret = acp_dma_status(adata, 0);
+	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);
+	dma_free_coherent(&pci->dev, ACP_DEFAULT_DRAM_LENGTH, adata->data_buf, adata->dma_addr);
+	adata->bin_buf = NULL;
+	adata->data_buf = NULL;
+
+	return ret;
+}
+EXPORT_SYMBOL_NS(acp_dsp_pre_fw_run, SND_SOC_SOF_AMD_COMMON);
+
+int acp_sof_dsp_run(struct snd_sof_dev *sdev)
+{
+	struct acp_dev_data *adata = sdev->pdata->hw_pdata;
+	const struct sof_amd_acp_desc *desc = get_chip_info(sdev->pdata);
+	int val;
+
+	snd_sof_dsp_write(sdev, ACP_DSP_BAR, ACP_DSP0_RUNSTALL, ACP_DSP_RUN);
+	val = snd_sof_dsp_read(sdev, ACP_DSP_BAR, ACP_DSP0_RUNSTALL);
+	dev_dbg(sdev->dev, "ACP_DSP0_RUNSTALL : 0x%0x\n", val);
+
+	/* Some platforms won't support fusion DSP,keep offset zero for no support */
+	if (desc->fusion_dsp_offset && adata->enable_fw_debug) {
+		snd_sof_dsp_write(sdev, ACP_DSP_BAR, desc->fusion_dsp_offset, ACP_DSP_RUN);
+		val = snd_sof_dsp_read(sdev, ACP_DSP_BAR, desc->fusion_dsp_offset);
+		dev_dbg(sdev->dev, "ACP_DSP0_FUSION_RUNSTALL : 0x%0x\n", val);
+	}
+	return 0;
+}
+EXPORT_SYMBOL_NS(acp_sof_dsp_run, SND_SOC_SOF_AMD_COMMON);
+
+int acp_sof_load_signed_firmware(struct snd_sof_dev *sdev)
+{
+	struct snd_sof_pdata *plat_data = sdev->pdata;
+	struct acp_dev_data *adata = plat_data->hw_pdata;
+	int ret;
+
+	ret = request_firmware(&sdev->basefw.fw, adata->fw_code_bin, sdev->dev);
+	if (ret < 0) {
+		dev_err(sdev->dev, "sof signed firmware code bin is missing\n");
+		return ret;
+	} else {
+		dev_dbg(sdev->dev, "request_firmware %s successful\n", adata->fw_code_bin);
+	}
+	ret = snd_sof_dsp_block_write(sdev, SOF_FW_BLK_TYPE_IRAM, 0,
+				      (void *)sdev->basefw.fw->data, sdev->basefw.fw->size);
+
+	ret = request_firmware(&adata->fw_dbin, adata->fw_data_bin, sdev->dev);
+	if (ret < 0) {
+		dev_err(sdev->dev, "sof signed firmware data bin is missing\n");
+		return ret;
+
+	} else {
+		dev_dbg(sdev->dev, "request_firmware %s successful\n", adata->fw_data_bin);
+	}
+
+	ret = snd_sof_dsp_block_write(sdev, SOF_FW_BLK_TYPE_DRAM, 0,
+				      (void *)adata->fw_dbin->data, adata->fw_dbin->size);
+	return ret;
+}
+EXPORT_SYMBOL_NS(acp_sof_load_signed_firmware, SND_SOC_SOF_AMD_COMMON);