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// 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 <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)
{
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;
}
/* Group Enable */
snd_sof_dsp_write(sdev, ACP_DSP_BAR, ACPAXI2AXI_ATU_BASE_ADDR_GRP_1,
ACP_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);
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);
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