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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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ASoC: Intel: mrfld - Add DSP load and management
This patch contains all dsp controlling functions like firmware download, setting/resetting dsp cores, etc. Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Vinod Koul
Mark Brown
parent
163d2089d2
commit
9012c9544e
461
sound/soc/intel/sst/sst_loader.c
Normal file
461
sound/soc/intel/sst/sst_loader.c
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@ -0,0 +1,461 @@
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/*
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* sst_dsp.c - Intel SST Driver for audio engine
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*
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* Copyright (C) 2008-14 Intel Corp
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* Authors: Vinod Koul <vinod.koul@intel.com>
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* Harsha Priya <priya.harsha@intel.com>
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* Dharageswari R <dharageswari.r@intel.com>
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* KP Jeeja <jeeja.kp@intel.com>
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*
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* This file contains all dsp controlling functions like firmware download,
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* setting/resetting dsp cores, etc
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*/
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#include <linux/pci.h>
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#include <linux/delay.h>
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#include <linux/fs.h>
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#include <linux/sched.h>
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#include <linux/firmware.h>
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#include <linux/dmaengine.h>
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#include <linux/pm_runtime.h>
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#include <linux/pm_qos.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/soc.h>
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#include <sound/compress_driver.h>
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#include <asm/platform_sst_audio.h>
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#include "../sst-mfld-platform.h"
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#include "sst.h"
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#include "../sst-dsp.h"
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static void memcpy32_toio(void __iomem *dst, const void *src, int count)
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{
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int i;
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const u32 *src_32 = src;
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u32 *dst_32 = dst;
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for (i = 0; i < count/sizeof(u32); i++)
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writel(*src_32++, dst_32++);
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}
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/**
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* intel_sst_reset_dsp_mrfld - Resetting SST DSP
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*
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* This resets DSP in case of MRFLD platfroms
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*/
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int intel_sst_reset_dsp_mrfld(struct intel_sst_drv *sst_drv_ctx)
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{
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union config_status_reg_mrfld csr;
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dev_dbg(sst_drv_ctx->dev, "sst: Resetting the DSP in mrfld\n");
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csr.full = sst_shim_read64(sst_drv_ctx->shim, SST_CSR);
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dev_dbg(sst_drv_ctx->dev, "value:0x%llx\n", csr.full);
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csr.full |= 0x7;
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sst_shim_write64(sst_drv_ctx->shim, SST_CSR, csr.full);
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csr.full = sst_shim_read64(sst_drv_ctx->shim, SST_CSR);
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dev_dbg(sst_drv_ctx->dev, "value:0x%llx\n", csr.full);
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csr.full &= ~(0x1);
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sst_shim_write64(sst_drv_ctx->shim, SST_CSR, csr.full);
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csr.full = sst_shim_read64(sst_drv_ctx->shim, SST_CSR);
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dev_dbg(sst_drv_ctx->dev, "value:0x%llx\n", csr.full);
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return 0;
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}
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/**
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* sst_start_merrifield - Start the SST DSP processor
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*
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* This starts the DSP in MERRIFIELD platfroms
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*/
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int sst_start_mrfld(struct intel_sst_drv *sst_drv_ctx)
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{
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union config_status_reg_mrfld csr;
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dev_dbg(sst_drv_ctx->dev, "sst: Starting the DSP in mrfld LALALALA\n");
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csr.full = sst_shim_read64(sst_drv_ctx->shim, SST_CSR);
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dev_dbg(sst_drv_ctx->dev, "value:0x%llx\n", csr.full);
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csr.full |= 0x7;
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sst_shim_write64(sst_drv_ctx->shim, SST_CSR, csr.full);
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csr.full = sst_shim_read64(sst_drv_ctx->shim, SST_CSR);
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dev_dbg(sst_drv_ctx->dev, "value:0x%llx\n", csr.full);
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csr.part.xt_snoop = 1;
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csr.full &= ~(0x5);
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sst_shim_write64(sst_drv_ctx->shim, SST_CSR, csr.full);
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csr.full = sst_shim_read64(sst_drv_ctx->shim, SST_CSR);
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dev_dbg(sst_drv_ctx->dev, "sst: Starting the DSP_merrifield:%llx\n",
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csr.full);
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return 0;
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}
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static int sst_validate_fw_image(struct intel_sst_drv *ctx, unsigned long size,
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struct fw_module_header **module, u32 *num_modules)
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{
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struct sst_fw_header *header;
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const void *sst_fw_in_mem = ctx->fw_in_mem;
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dev_dbg(ctx->dev, "Enter\n");
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/* Read the header information from the data pointer */
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header = (struct sst_fw_header *)sst_fw_in_mem;
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dev_dbg(ctx->dev,
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"header sign=%s size=%x modules=%x fmt=%x size=%zx\n",
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header->signature, header->file_size, header->modules,
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header->file_format, sizeof(*header));
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/* verify FW */
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if ((strncmp(header->signature, SST_FW_SIGN, 4) != 0) ||
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(size != header->file_size + sizeof(*header))) {
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/* Invalid FW signature */
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dev_err(ctx->dev, "InvalidFW sign/filesize mismatch\n");
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return -EINVAL;
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}
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*num_modules = header->modules;
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*module = (void *)sst_fw_in_mem + sizeof(*header);
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return 0;
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}
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/*
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* sst_fill_memcpy_list - Fill the memcpy list
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*
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* @memcpy_list: List to be filled
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* @destn: Destination addr to be filled in the list
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* @src: Source addr to be filled in the list
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* @size: Size to be filled in the list
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*
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* Adds the node to the list after required fields
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* are populated in the node
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*/
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static int sst_fill_memcpy_list(struct list_head *memcpy_list,
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void *destn, const void *src, u32 size, bool is_io)
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{
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struct sst_memcpy_list *listnode;
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listnode = kzalloc(sizeof(*listnode), GFP_KERNEL);
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if (listnode == NULL)
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return -ENOMEM;
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listnode->dstn = destn;
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listnode->src = src;
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listnode->size = size;
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listnode->is_io = is_io;
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list_add_tail(&listnode->memcpylist, memcpy_list);
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return 0;
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}
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/**
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* sst_parse_module_memcpy - Parse audio FW modules and populate the memcpy list
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*
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* @sst_drv_ctx : driver context
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* @module : FW module header
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* @memcpy_list : Pointer to the list to be populated
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* Create the memcpy list as the number of block to be copied
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* returns error or 0 if module sizes are proper
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*/
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static int sst_parse_module_memcpy(struct intel_sst_drv *sst_drv_ctx,
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struct fw_module_header *module, struct list_head *memcpy_list)
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{
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struct fw_block_info *block;
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u32 count;
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int ret_val = 0;
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void __iomem *ram_iomem;
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dev_dbg(sst_drv_ctx->dev, "module sign %s size %x blocks %x type %x\n",
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module->signature, module->mod_size,
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module->blocks, module->type);
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dev_dbg(sst_drv_ctx->dev, "module entrypoint 0x%x\n", module->entry_point);
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block = (void *)module + sizeof(*module);
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for (count = 0; count < module->blocks; count++) {
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if (block->size <= 0) {
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dev_err(sst_drv_ctx->dev, "block size invalid\n");
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return -EINVAL;
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}
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switch (block->type) {
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case SST_IRAM:
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ram_iomem = sst_drv_ctx->iram;
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break;
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case SST_DRAM:
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ram_iomem = sst_drv_ctx->dram;
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break;
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case SST_DDR:
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ram_iomem = sst_drv_ctx->ddr;
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break;
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case SST_CUSTOM_INFO:
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block = (void *)block + sizeof(*block) + block->size;
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continue;
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default:
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dev_err(sst_drv_ctx->dev, "wrong ram type0x%x in block0x%x\n",
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block->type, count);
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return -EINVAL;
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}
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ret_val = sst_fill_memcpy_list(memcpy_list,
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ram_iomem + block->ram_offset,
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(void *)block + sizeof(*block), block->size, 1);
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if (ret_val)
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return ret_val;
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block = (void *)block + sizeof(*block) + block->size;
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}
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return 0;
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}
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/**
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* sst_parse_fw_memcpy - parse the firmware image & populate the list for memcpy
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*
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* @ctx : pointer to drv context
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* @size : size of the firmware
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* @fw_list : pointer to list_head to be populated
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* This function parses the FW image and saves the parsed image in the list
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* for memcpy
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*/
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static int sst_parse_fw_memcpy(struct intel_sst_drv *ctx, unsigned long size,
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struct list_head *fw_list)
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{
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struct fw_module_header *module;
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u32 count, num_modules;
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int ret_val;
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ret_val = sst_validate_fw_image(ctx, size, &module, &num_modules);
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if (ret_val)
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return ret_val;
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for (count = 0; count < num_modules; count++) {
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ret_val = sst_parse_module_memcpy(ctx, module, fw_list);
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if (ret_val)
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return ret_val;
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module = (void *)module + sizeof(*module) + module->mod_size;
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}
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return 0;
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}
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/**
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* sst_do_memcpy - function initiates the memcpy
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*
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* @memcpy_list: Pter to memcpy list on which the memcpy needs to be initiated
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*
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* Triggers the memcpy
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*/
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static void sst_do_memcpy(struct list_head *memcpy_list)
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{
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struct sst_memcpy_list *listnode;
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list_for_each_entry(listnode, memcpy_list, memcpylist) {
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if (listnode->is_io == true)
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memcpy32_toio((void __iomem *)listnode->dstn,
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listnode->src, listnode->size);
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else
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memcpy(listnode->dstn, listnode->src, listnode->size);
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}
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}
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void sst_memcpy_free_resources(struct intel_sst_drv *sst_drv_ctx)
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{
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struct sst_memcpy_list *listnode, *tmplistnode;
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/* Free the list */
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if (!list_empty(&sst_drv_ctx->memcpy_list)) {
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list_for_each_entry_safe(listnode, tmplistnode,
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&sst_drv_ctx->memcpy_list, memcpylist) {
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list_del(&listnode->memcpylist);
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kfree(listnode);
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}
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}
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}
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static int sst_cache_and_parse_fw(struct intel_sst_drv *sst,
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const struct firmware *fw)
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{
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int retval = 0;
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sst->fw_in_mem = kzalloc(fw->size, GFP_KERNEL);
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if (!sst->fw_in_mem) {
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retval = -ENOMEM;
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goto end_release;
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}
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dev_dbg(sst->dev, "copied fw to %p", sst->fw_in_mem);
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dev_dbg(sst->dev, "phys: %lx", (unsigned long)virt_to_phys(sst->fw_in_mem));
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memcpy(sst->fw_in_mem, fw->data, fw->size);
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retval = sst_parse_fw_memcpy(sst, fw->size, &sst->memcpy_list);
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if (retval) {
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dev_err(sst->dev, "Failed to parse fw\n");
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kfree(sst->fw_in_mem);
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sst->fw_in_mem = NULL;
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}
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end_release:
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release_firmware(fw);
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return retval;
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}
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void sst_firmware_load_cb(const struct firmware *fw, void *context)
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{
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struct intel_sst_drv *ctx = context;
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dev_dbg(ctx->dev, "Enter\n");
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if (fw == NULL) {
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dev_err(ctx->dev, "request fw failed\n");
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return;
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}
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mutex_lock(&ctx->sst_lock);
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if (ctx->sst_state != SST_RESET ||
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ctx->fw_in_mem != NULL) {
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if (fw != NULL)
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release_firmware(fw);
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mutex_unlock(&ctx->sst_lock);
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return;
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}
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dev_dbg(ctx->dev, "Request Fw completed\n");
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sst_cache_and_parse_fw(ctx, fw);
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mutex_unlock(&ctx->sst_lock);
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}
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/*
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* sst_request_fw - requests audio fw from kernel and saves a copy
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*
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* This function requests the SST FW from the kernel, parses it and
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* saves a copy in the driver context
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*/
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static int sst_request_fw(struct intel_sst_drv *sst)
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{
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int retval = 0;
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char name[20];
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const struct firmware *fw;
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dev_dbg(sst->dev, "Requesting FW %s now...\n", name);
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retval = request_firmware(&fw, name, sst->dev);
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if (fw == NULL) {
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dev_err(sst->dev, "fw is returning as null\n");
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return -EINVAL;
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}
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if (retval) {
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dev_err(sst->dev, "request fw failed %d\n", retval);
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return retval;
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}
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mutex_lock(&sst->sst_lock);
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retval = sst_cache_and_parse_fw(sst, fw);
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mutex_unlock(&sst->sst_lock);
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return retval;
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}
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/*
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* Writing the DDR physical base to DCCM offset
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* so that FW can use it to setup TLB
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*/
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static void sst_dccm_config_write(void __iomem *dram_base,
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unsigned int ddr_base)
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{
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void __iomem *addr;
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u32 bss_reset = 0;
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addr = (void __iomem *)(dram_base + MRFLD_FW_DDR_BASE_OFFSET);
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memcpy32_toio(addr, (void *)&ddr_base, sizeof(u32));
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bss_reset |= (1 << MRFLD_FW_BSS_RESET_BIT);
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addr = (void __iomem *)(dram_base + MRFLD_FW_FEATURE_BASE_OFFSET);
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memcpy32_toio(addr, &bss_reset, sizeof(u32));
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}
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void sst_post_download_mrfld(struct intel_sst_drv *ctx)
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{
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sst_dccm_config_write(ctx->dram, ctx->ddr_base);
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dev_dbg(ctx->dev, "config written to DCCM\n");
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}
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/**
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* sst_load_fw - function to load FW into DSP
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* Transfers the FW to DSP using dma/memcpy
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*/
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int sst_load_fw(struct intel_sst_drv *sst_drv_ctx)
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{
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int ret_val = 0;
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struct sst_block *block;
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dev_dbg(sst_drv_ctx->dev, "sst_load_fw\n");
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if (sst_drv_ctx->sst_state != SST_RESET ||
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sst_drv_ctx->sst_state == SST_SHUTDOWN)
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return -EAGAIN;
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if (!sst_drv_ctx->fw_in_mem) {
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dev_dbg(sst_drv_ctx->dev, "sst: FW not in memory retry to download\n");
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ret_val = sst_request_fw(sst_drv_ctx);
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if (ret_val)
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return ret_val;
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}
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BUG_ON(!sst_drv_ctx->fw_in_mem);
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block = sst_create_block(sst_drv_ctx, 0, FW_DWNL_ID);
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if (block == NULL)
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return -ENOMEM;
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/* Prevent C-states beyond C6 */
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pm_qos_update_request(sst_drv_ctx->qos, 0);
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sst_drv_ctx->sst_state = SST_FW_LOADING;
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ret_val = sst_drv_ctx->ops->reset(sst_drv_ctx);
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if (ret_val)
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goto restore;
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sst_do_memcpy(&sst_drv_ctx->memcpy_list);
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/* Write the DRAM/DCCM config before enabling FW */
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if (sst_drv_ctx->ops->post_download)
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sst_drv_ctx->ops->post_download(sst_drv_ctx);
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/* bring sst out of reset */
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ret_val = sst_drv_ctx->ops->start(sst_drv_ctx);
|
||||
if (ret_val)
|
||||
goto restore;
|
||||
|
||||
ret_val = sst_wait_timeout(sst_drv_ctx, block);
|
||||
if (ret_val) {
|
||||
dev_err(sst_drv_ctx->dev, "fw download failed %d\n" , ret_val);
|
||||
/* FW download failed due to timeout */
|
||||
ret_val = -EBUSY;
|
||||
|
||||
}
|
||||
|
||||
|
||||
restore:
|
||||
/* Re-enable Deeper C-states beyond C6 */
|
||||
pm_qos_update_request(sst_drv_ctx->qos, PM_QOS_DEFAULT_VALUE);
|
||||
sst_free_block(sst_drv_ctx, block);
|
||||
dev_dbg(sst_drv_ctx->dev, "fw load successful!!!\n");
|
||||
|
||||
if (sst_drv_ctx->ops->restore_dsp_context)
|
||||
sst_drv_ctx->ops->restore_dsp_context();
|
||||
sst_drv_ctx->sst_state = SST_FW_RUNNING;
|
||||
return ret_val;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user