diff options
Diffstat (limited to 'sound/soc/sof/amd/acp-loader.c')
| -rw-r--r-- | sound/soc/sof/amd/acp-loader.c | 199 |
1 files changed, 199 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 000000000000..2dc15ae38155 --- /dev/null +++ b/sound/soc/sof/amd/acp-loader.c @@ -0,0 +1,199 @@ +// 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 Advanced Micro Devices, Inc. +// +// Authors: Ajit Kumar Pandey <[email protected]> + +/* + * 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) +{ + switch (blk_type) { + case SOF_FW_BLK_TYPE_SRAM: + offset = offset - ACP_SCRATCH_MEMORY_ADDRESS; + 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 snd_sof_pdata *plat_data = sdev->pdata; + struct pci_dev *pci = to_pci_dev(sdev->dev); + 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 = plat_data->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 - ACP_SCRATCH_MEMORY_ADDRESS; + 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; + unsigned int low, high; + dma_addr_t addr; + u16 page_idx; + u32 offset; + + sdev = adata->dev; + + 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; + } + + 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; + } +} + +/* pre fw run operations */ +int acp_dsp_pre_fw_run(struct snd_sof_dev *sdev) +{ + struct pci_dev *pci = to_pci_dev(sdev->dev); + struct snd_sof_pdata *plat_data = 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; + 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); + + /* Free memory once DMA is complete */ + dma_size = (PAGE_ALIGN(plat_data->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) +{ + 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); + + return 0; +} +EXPORT_SYMBOL_NS(acp_sof_dsp_run, SND_SOC_SOF_AMD_COMMON); |