[PATCH v2 06/13] ASoC: Intel: Remove SST firmware components

From: Cezary Rojewski <cezary.rojewski@intel.com>
To: alsa-devel@alsa-project.org
Cc: pierre-louis.bossart@linux.intel.com,
	Cezary Rojewski <cezary.rojewski@intel.com>,
	andriy.shevchenko@linux.intel.com, filip.kaczmarski@intel.com,
	harshapriya.n@intel.com, marcin.barlik@intel.com,
	zwisler@google.com, lgirdwood@gmail.com, tiwai@suse.com,
	filip.proborszcz@intel.com, broonie@kernel.org,
	amadeuszx.slawinski@linux.intel.com, michal.wasko@intel.com,
	cujomalainey@chromium.org, krzysztof.hejmowski@intel.com,
	ppapierkowski@habana.ai, vamshi.krishna.gopal@intel.com
Subject: [PATCH v2 06/13] ASoC: Intel: Remove SST firmware components
Date: Tue,  6 Oct 2020 08:49:00 +0200	[thread overview]
Message-ID: <20201006064907.16277-7-cezary.rojewski@intel.com> (raw)
In-Reply-To: <20201006064907.16277-1-cezary.rojewski@intel.com>

sst-firmware is host to many image loading over DMA operations. Majority
of code targets sound/soc/intel/haswell solution as /baytrail/ never
switched to DMA-based firmware loading. With /haswell/ removed this code
serves no purpose. Address this redundancy.

Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 sound/soc/intel/Kconfig               |    7 -
 sound/soc/intel/common/Makefile       |    2 -
 sound/soc/intel/common/sst-dsp-priv.h |  216 -----
 sound/soc/intel/common/sst-dsp.h      |   15 -
 sound/soc/intel/common/sst-firmware.c | 1273 -------------------------
 5 files changed, 1513 deletions(-)
 delete mode 100644 sound/soc/intel/common/sst-firmware.c

diff --git a/sound/soc/intel/Kconfig b/sound/soc/intel/Kconfig
index a9940e81c5cd..e53e9ffc5e2f 100644
--- a/sound/soc/intel/Kconfig
+++ b/sound/soc/intel/Kconfig
@@ -34,13 +34,6 @@ config SND_SST_IPC_ACPI
 config SND_SOC_INTEL_SST
 	tristate
 
-config SND_SOC_INTEL_SST_FIRMWARE
-	tristate
-	select DW_DMAC_CORE
-	# This option controls firmware download on
-	# Haswell/Broadwell/Baytrail legacy and will be set
-	# when these platforms are enabled
-
 config SND_SOC_INTEL_CATPT
 	tristate "Haswell and Broadwell"
 	depends on ACPI || COMPILE_TEST
diff --git a/sound/soc/intel/common/Makefile b/sound/soc/intel/common/Makefile
index f4d41d284e67..64468fe9c513 100644
--- a/sound/soc/intel/common/Makefile
+++ b/sound/soc/intel/common/Makefile
@@ -1,7 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0-only
 snd-soc-sst-dsp-objs := sst-dsp.o
 snd-soc-sst-ipc-objs := sst-ipc.o
-snd-soc-sst-firmware-objs := sst-firmware.o
 snd-soc-acpi-intel-match-objs := soc-acpi-intel-byt-match.o soc-acpi-intel-cht-match.o \
 	soc-acpi-intel-hsw-bdw-match.o \
 	soc-acpi-intel-skl-match.o soc-acpi-intel-kbl-match.o \
@@ -13,5 +12,4 @@ snd-soc-acpi-intel-match-objs := soc-acpi-intel-byt-match.o soc-acpi-intel-cht-m
 	soc-acpi-intel-hda-match.o
 
 obj-$(CONFIG_SND_SOC_INTEL_SST) += snd-soc-sst-dsp.o snd-soc-sst-ipc.o
-obj-$(CONFIG_SND_SOC_INTEL_SST_FIRMWARE) += snd-soc-sst-firmware.o
 obj-$(CONFIG_SND_SOC_ACPI_INTEL_MATCH) += snd-soc-acpi-intel-match.o
diff --git a/sound/soc/intel/common/sst-dsp-priv.h b/sound/soc/intel/common/sst-dsp-priv.h
index 9a760123b46f..6b6738a289dc 100644
--- a/sound/soc/intel/common/sst-dsp-priv.h
+++ b/sound/soc/intel/common/sst-dsp-priv.h
@@ -15,10 +15,6 @@
 
 #include "../skylake/skl-sst-dsp.h"
 
-struct sst_mem_block;
-struct sst_module;
-struct sst_fw;
-
 /* do we need to remove or keep */
 #define DSP_DRAM_ADDR_OFFSET		0x400000
 
@@ -53,9 +49,6 @@ struct sst_ops {
 	/* SST init and free */
 	int (*init)(struct sst_dsp *sst, struct sst_pdata *pdata);
 	void (*free)(struct sst_dsp *sst);
-
-	/* FW module parser/loader */
-	int (*parse_fw)(struct sst_fw *sst_fw);
 };
 
 /*
@@ -88,168 +81,6 @@ struct sst_mailbox {
 	size_t out_size;
 };
 
-/*
- * Audio DSP memory block types.
- */
-enum sst_mem_type {
-	SST_MEM_IRAM = 0,
-	SST_MEM_DRAM = 1,
-	SST_MEM_ANY  = 2,
-	SST_MEM_CACHE= 3,
-};
-
-/*
- * Audio DSP Generic Firmware File.
- *
- * SST Firmware files can consist of 1..N modules. This generic structure is
- * used to manage each firmware file and it's modules regardless of SST firmware
- * type. A SST driver may load multiple FW files.
- */
-struct sst_fw {
-	struct sst_dsp *dsp;
-
-	/* base addresses of FW file data */
-	dma_addr_t dmable_fw_paddr;	/* physical address of fw data */
-	void *dma_buf;			/* virtual address of fw data */
-	u32 size;			/* size of fw data */
-
-	/* lists */
-	struct list_head list;		/* DSP list of FW */
-	struct list_head module_list;	/* FW list of modules */
-
-	void *private;			/* core doesn't touch this */
-};
-
-/*
- * Audio DSP Generic Module Template.
- *
- * Used to define and register a new FW module. This data is extracted from
- * FW module header information.
- */
-struct sst_module_template {
-	u32 id;
-	u32 entry;			/* entry point */
-	u32 scratch_size;
-	u32 persistent_size;
-};
-
-/*
- * Block Allocator - Used to allocate blocks of DSP memory.
- */
-struct sst_block_allocator {
-	u32 id;
-	u32 offset;
-	int size;
-	enum sst_mem_type type;
-};
-
-/*
- * Runtime Module Instance - A module object can be instantiated multiple
- * times within the DSP FW.
- */
-struct sst_module_runtime {
-	struct sst_dsp *dsp;
-	int id;
-	struct sst_module *module;	/* parent module we belong too */
-
-	u32 persistent_offset;		/* private memory offset */
-	void *private;
-
-	struct list_head list;
-	struct list_head block_list;	/* list of blocks used */
-};
-
-/*
- * Runtime Module Context - The runtime context must be manually stored by the
- * driver prior to enter S3 and restored after leaving S3. This should really be
- * part of the memory context saved by the enter D3 message IPC ???
- */
-struct sst_module_runtime_context {
-	dma_addr_t dma_buffer;
-	u32 *buffer;
-};
-
-/*
- * Audio DSP Module State
- */
-enum sst_module_state {
-	SST_MODULE_STATE_UNLOADED = 0,	/* default state */
-	SST_MODULE_STATE_LOADED,
-	SST_MODULE_STATE_INITIALIZED,	/* and inactive */
-	SST_MODULE_STATE_ACTIVE,
-};
-
-/*
- * Audio DSP Generic Module.
- *
- * Each Firmware file can consist of 1..N modules. A module can span multiple
- * ADSP memory blocks. The simplest FW will be a file with 1 module. A module
- * can be instantiated multiple times in the DSP.
- */
-struct sst_module {
-	struct sst_dsp *dsp;
-	struct sst_fw *sst_fw;		/* parent FW we belong too */
-
-	/* module configuration */
-	u32 id;
-	u32 entry;			/* module entry point */
-	s32 offset;			/* module offset in firmware file */
-	u32 size;			/* module size */
-	u32 scratch_size;		/* global scratch memory required */
-	u32 persistent_size;		/* private memory required */
-	enum sst_mem_type type;		/* destination memory type */
-	u32 data_offset;		/* offset in ADSP memory space */
-	void *data;			/* module data */
-
-	/* runtime */
-	u32 usage_count;		/* can be unloaded if count == 0 */
-	void *private;			/* core doesn't touch this */
-
-	/* lists */
-	struct list_head block_list;	/* Module list of blocks in use */
-	struct list_head list;		/* DSP list of modules */
-	struct list_head list_fw;	/* FW list of modules */
-	struct list_head runtime_list;	/* list of runtime module objects*/
-
-	/* state */
-	enum sst_module_state state;
-};
-
-/*
- * SST Memory Block operations.
- */
-struct sst_block_ops {
-	int (*enable)(struct sst_mem_block *block);
-	int (*disable)(struct sst_mem_block *block);
-};
-
-/*
- * SST Generic Memory Block.
- *
- * SST ADP  memory has multiple IRAM and DRAM blocks. Some ADSP blocks can be
- * power gated.
- */
-struct sst_mem_block {
-	struct sst_dsp *dsp;
-	struct sst_module *module;	/* module that uses this block */
-
-	/* block config */
-	u32 offset;			/* offset from base */
-	u32 size;			/* block size */
-	u32 index;			/* block index 0..N */
-	enum sst_mem_type type;		/* block memory type IRAM/DRAM */
-	const struct sst_block_ops *ops;/* block operations, if any */
-
-	/* block status */
-	u32 bytes_used;			/* bytes in use by modules */
-	void *private;			/* generic core does not touch this */
-	int users;			/* number of modules using this block */
-
-	/* block lists */
-	struct list_head module_list;	/* Module list of blocks */
-	struct list_head list;		/* Map list of free/used blocks */
-};
-
 /*
  * Generic SST Shim Interface.
  */
@@ -333,51 +164,4 @@ static inline void *sst_dsp_get_thread_context(struct sst_dsp *sst)
 	return sst->thread_context;
 }
 
-/* Create/Free FW files - can contain multiple modules */
-struct sst_fw *sst_fw_new(struct sst_dsp *dsp,
-	const struct firmware *fw, void *private);
-void sst_fw_free(struct sst_fw *sst_fw);
-void sst_fw_free_all(struct sst_dsp *dsp);
-int sst_fw_reload(struct sst_fw *sst_fw);
-void sst_fw_unload(struct sst_fw *sst_fw);
-
-/* Create/Free firmware modules */
-struct sst_module *sst_module_new(struct sst_fw *sst_fw,
-	struct sst_module_template *template, void *private);
-void sst_module_free(struct sst_module *sst_module);
-struct sst_module *sst_module_get_from_id(struct sst_dsp *dsp, u32 id);
-int sst_module_alloc_blocks(struct sst_module *module);
-int sst_module_free_blocks(struct sst_module *module);
-
-/* Create/Free firmware module runtime instances */
-struct sst_module_runtime *sst_module_runtime_new(struct sst_module *module,
-	int id, void *private);
-void sst_module_runtime_free(struct sst_module_runtime *runtime);
-struct sst_module_runtime *sst_module_runtime_get_from_id(
-	struct sst_module *module, u32 id);
-int sst_module_runtime_alloc_blocks(struct sst_module_runtime *runtime,
-	int offset);
-int sst_module_runtime_free_blocks(struct sst_module_runtime *runtime);
-int sst_module_runtime_save(struct sst_module_runtime *runtime,
-	struct sst_module_runtime_context *context);
-int sst_module_runtime_restore(struct sst_module_runtime *runtime,
-	struct sst_module_runtime_context *context);
-
-/* generic block allocation */
-int sst_alloc_blocks(struct sst_dsp *dsp, struct sst_block_allocator *ba,
-	struct list_head *block_list);
-int sst_free_blocks(struct sst_dsp *dsp, struct list_head *block_list);
-
-/* scratch allocation */
-int sst_block_alloc_scratch(struct sst_dsp *dsp);
-void sst_block_free_scratch(struct sst_dsp *dsp);
-
-/* Register the DSPs memory blocks - would be nice to read from ACPI */
-struct sst_mem_block *sst_mem_block_register(struct sst_dsp *dsp, u32 offset,
-	u32 size, enum sst_mem_type type, const struct sst_block_ops *ops,
-	u32 index, void *private);
-void sst_mem_block_unregister_all(struct sst_dsp *dsp);
-
-u32 sst_dsp_get_offset(struct sst_dsp *dsp, u32 offset,
-	enum sst_mem_type type);
 #endif
diff --git a/sound/soc/intel/common/sst-dsp.h b/sound/soc/intel/common/sst-dsp.h
index d55014587415..ebd0dc5706a0 100644
--- a/sound/soc/intel/common/sst-dsp.h
+++ b/sound/soc/intel/common/sst-dsp.h
@@ -207,13 +207,6 @@ struct sst_pdata {
 	void *dsp;
 };
 
-#if IS_ENABLED(CONFIG_DW_DMAC_CORE)
-/* Initialization */
-struct sst_dsp *sst_dsp_new(struct device *dev,
-	struct sst_dsp_device *sst_dev, struct sst_pdata *pdata);
-void sst_dsp_free(struct sst_dsp *sst);
-#endif
-
 /* SHIM Read / Write */
 void sst_dsp_shim_write(struct sst_dsp *sst, u32 offset, u32 value);
 u32 sst_dsp_shim_read(struct sst_dsp *sst, u32 offset);
@@ -255,14 +248,6 @@ int sst_dsp_wake(struct sst_dsp *sst);
 void sst_dsp_sleep(struct sst_dsp *sst);
 void sst_dsp_stall(struct sst_dsp *sst);
 
-/* DMA */
-int sst_dsp_dma_get_channel(struct sst_dsp *dsp, int chan_id);
-void sst_dsp_dma_put_channel(struct sst_dsp *dsp);
-int sst_dsp_dma_copyfrom(struct sst_dsp *sst, dma_addr_t dest_addr,
-	dma_addr_t src_addr, size_t size);
-int sst_dsp_dma_copyto(struct sst_dsp *sst, dma_addr_t dest_addr,
-	dma_addr_t src_addr, size_t size);
-
 /* Msg IO */
 void sst_dsp_ipc_msg_tx(struct sst_dsp *dsp, u32 msg);
 u32 sst_dsp_ipc_msg_rx(struct sst_dsp *dsp);
diff --git a/sound/soc/intel/common/sst-firmware.c b/sound/soc/intel/common/sst-firmware.c
deleted file mode 100644
index 1189ec37134e..000000000000
--- a/sound/soc/intel/common/sst-firmware.c
+++ /dev/null
@@ -1,1273 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Intel SST Firmware Loader
- *
- * Copyright (C) 2013, Intel Corporation. All rights reserved.
- */
-
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/sched.h>
-#include <linux/firmware.h>
-#include <linux/export.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/dma-mapping.h>
-#include <linux/dmaengine.h>
-#include <linux/pci.h>
-#include <linux/acpi.h>
-#include <linux/pgtable.h>
-
-/* supported DMA engine drivers */
-#include <linux/dma/dw.h>
-
-#include <asm/page.h>
-
-#include "sst-dsp.h"
-#include "sst-dsp-priv.h"
-
-#define SST_DMA_RESOURCES	2
-#define SST_DSP_DMA_MAX_BURST	0x3
-#define SST_HSW_BLOCK_ANY	0xffffffff
-
-#define SST_HSW_MASK_DMA_ADDR_DSP 0xfff00000
-
-struct sst_dma {
-	struct sst_dsp *sst;
-
-	struct dw_dma_chip *chip;
-
-	struct dma_async_tx_descriptor *desc;
-	struct dma_chan *ch;
-};
-
-static inline void sst_memcpy32(volatile void __iomem *dest, void *src, u32 bytes)
-{
-	u32 tmp = 0;
-	int i, m, n;
-	const u8 *src_byte = src;
-
-	m = bytes / 4;
-	n = bytes % 4;
-
-	/* __iowrite32_copy use 32bit size values so divide by 4 */
-	__iowrite32_copy((void *)dest, src, m);
-
-	if (n) {
-		for (i = 0; i < n; i++)
-			tmp |= (u32)*(src_byte + m * 4 + i) << (i * 8);
-		__iowrite32_copy((void *)(dest + m * 4), &tmp, 1);
-	}
-
-}
-
-static void sst_dma_transfer_complete(void *arg)
-{
-	struct sst_dsp *sst = (struct sst_dsp *)arg;
-
-	dev_dbg(sst->dev, "DMA: callback\n");
-}
-
-static int sst_dsp_dma_copy(struct sst_dsp *sst, dma_addr_t dest_addr,
-	dma_addr_t src_addr, size_t size)
-{
-	struct dma_async_tx_descriptor *desc;
-	struct sst_dma *dma = sst->dma;
-
-	if (dma->ch == NULL) {
-		dev_err(sst->dev, "error: no DMA channel\n");
-		return -ENODEV;
-	}
-
-	dev_dbg(sst->dev, "DMA: src: 0x%lx dest 0x%lx size %zu\n",
-		(unsigned long)src_addr, (unsigned long)dest_addr, size);
-
-	desc = dma->ch->device->device_prep_dma_memcpy(dma->ch, dest_addr,
-		src_addr, size, DMA_CTRL_ACK);
-	if (!desc){
-		dev_err(sst->dev, "error: dma prep memcpy failed\n");
-		return -EINVAL;
-	}
-
-	desc->callback = sst_dma_transfer_complete;
-	desc->callback_param = sst;
-
-	desc->tx_submit(desc);
-	dma_wait_for_async_tx(desc);
-
-	return 0;
-}
-
-/* copy to DSP */
-int sst_dsp_dma_copyto(struct sst_dsp *sst, dma_addr_t dest_addr,
-	dma_addr_t src_addr, size_t size)
-{
-	return sst_dsp_dma_copy(sst, dest_addr | SST_HSW_MASK_DMA_ADDR_DSP,
-			src_addr, size);
-}
-EXPORT_SYMBOL_GPL(sst_dsp_dma_copyto);
-
-/* copy from DSP */
-int sst_dsp_dma_copyfrom(struct sst_dsp *sst, dma_addr_t dest_addr,
-	dma_addr_t src_addr, size_t size)
-{
-	return sst_dsp_dma_copy(sst, dest_addr,
-		src_addr | SST_HSW_MASK_DMA_ADDR_DSP, size);
-}
-EXPORT_SYMBOL_GPL(sst_dsp_dma_copyfrom);
-
-/* remove module from memory - callers hold locks */
-static void block_list_remove(struct sst_dsp *dsp,
-	struct list_head *block_list)
-{
-	struct sst_mem_block *block, *tmp;
-	int err;
-
-	/* disable each block  */
-	list_for_each_entry(block, block_list, module_list) {
-
-		if (block->ops && block->ops->disable) {
-			err = block->ops->disable(block);
-			if (err < 0)
-				dev_err(dsp->dev,
-					"error: can't disable block %d:%d\n",
-					block->type, block->index);
-		}
-	}
-
-	/* mark each block as free */
-	list_for_each_entry_safe(block, tmp, block_list, module_list) {
-		list_del(&block->module_list);
-		list_move(&block->list, &dsp->free_block_list);
-		dev_dbg(dsp->dev, "block freed %d:%d at offset 0x%x\n",
-			block->type, block->index, block->offset);
-	}
-}
-
-/* prepare the memory block to receive data from host - callers hold locks */
-static int block_list_prepare(struct sst_dsp *dsp,
-	struct list_head *block_list)
-{
-	struct sst_mem_block *block;
-	int ret = 0;
-
-	/* enable each block so that's it'e ready for data */
-	list_for_each_entry(block, block_list, module_list) {
-
-		if (block->ops && block->ops->enable && !block->users) {
-			ret = block->ops->enable(block);
-			if (ret < 0) {
-				dev_err(dsp->dev,
-					"error: can't disable block %d:%d\n",
-					block->type, block->index);
-				goto err;
-			}
-		}
-	}
-	return ret;
-
-err:
-	list_for_each_entry(block, block_list, module_list) {
-		if (block->ops && block->ops->disable)
-			block->ops->disable(block);
-	}
-	return ret;
-}
-
-static struct dw_dma_chip *dw_probe(struct device *dev, struct resource *mem,
-	int irq)
-{
-	struct dw_dma_chip *chip;
-	int err;
-
-	chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL);
-	if (!chip)
-		return ERR_PTR(-ENOMEM);
-
-	chip->irq = irq;
-	chip->regs = devm_ioremap_resource(dev, mem);
-	if (IS_ERR(chip->regs))
-		return ERR_CAST(chip->regs);
-
-	err = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(31));
-	if (err)
-		return ERR_PTR(err);
-
-	chip->dev = dev;
-
-	err = dw_dma_probe(chip);
-	if (err)
-		return ERR_PTR(err);
-
-	return chip;
-}
-
-static void dw_remove(struct dw_dma_chip *chip)
-{
-	dw_dma_remove(chip);
-}
-
-static bool dma_chan_filter(struct dma_chan *chan, void *param)
-{
-	struct sst_dsp *dsp = (struct sst_dsp *)param;
-
-	return chan->device->dev == dsp->dma_dev;
-}
-
-int sst_dsp_dma_get_channel(struct sst_dsp *dsp, int chan_id)
-{
-	struct sst_dma *dma = dsp->dma;
-	struct dma_slave_config slave;
-	dma_cap_mask_t mask;
-	int ret;
-
-	dma_cap_zero(mask);
-	dma_cap_set(DMA_SLAVE, mask);
-	dma_cap_set(DMA_MEMCPY, mask);
-
-	dma->ch = dma_request_channel(mask, dma_chan_filter, dsp);
-	if (dma->ch == NULL) {
-		dev_err(dsp->dev, "error: DMA request channel failed\n");
-		return -EIO;
-	}
-
-	memset(&slave, 0, sizeof(slave));
-	slave.direction = DMA_MEM_TO_DEV;
-	slave.src_addr_width =
-		slave.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
-	slave.src_maxburst = slave.dst_maxburst = SST_DSP_DMA_MAX_BURST;
-
-	ret = dmaengine_slave_config(dma->ch, &slave);
-	if (ret) {
-		dev_err(dsp->dev, "error: unable to set DMA slave config %d\n",
-			ret);
-		dma_release_channel(dma->ch);
-		dma->ch = NULL;
-	}
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(sst_dsp_dma_get_channel);
-
-void sst_dsp_dma_put_channel(struct sst_dsp *dsp)
-{
-	struct sst_dma *dma = dsp->dma;
-
-	if (!dma->ch)
-		return;
-
-	dma_release_channel(dma->ch);
-	dma->ch = NULL;
-}
-EXPORT_SYMBOL_GPL(sst_dsp_dma_put_channel);
-
-static int sst_dma_new(struct sst_dsp *sst)
-{
-	struct sst_pdata *sst_pdata = sst->pdata;
-	struct sst_dma *dma;
-	struct resource mem;
-	int ret = 0;
-
-	if (sst->pdata->resindex_dma_base == -1)
-		/* DMA is not used, return and squelsh error messages */
-		return 0;
-
-	/* configure the correct platform data for whatever DMA engine
-	* is attached to the ADSP IP. */
-	switch (sst->pdata->dma_engine) {
-	case SST_DMA_TYPE_DW:
-		break;
-	default:
-		dev_err(sst->dev, "error: invalid DMA engine %d\n",
-			sst->pdata->dma_engine);
-		return -EINVAL;
-	}
-
-	dma = devm_kzalloc(sst->dev, sizeof(struct sst_dma), GFP_KERNEL);
-	if (!dma)
-		return -ENOMEM;
-
-	dma->sst = sst;
-
-	memset(&mem, 0, sizeof(mem));
-
-	mem.start = sst->addr.lpe_base + sst_pdata->dma_base;
-	mem.end   = sst->addr.lpe_base + sst_pdata->dma_base + sst_pdata->dma_size - 1;
-	mem.flags = IORESOURCE_MEM;
-
-	/* now register DMA engine device */
-	dma->chip = dw_probe(sst->dma_dev, &mem, sst_pdata->irq);
-	if (IS_ERR(dma->chip)) {
-		dev_err(sst->dev, "error: DMA device register failed\n");
-		ret = PTR_ERR(dma->chip);
-		goto err_dma_dev;
-	}
-
-	sst->dma = dma;
-	sst->fw_use_dma = true;
-	return 0;
-
-err_dma_dev:
-	devm_kfree(sst->dev, dma);
-	return ret;
-}
-
-static void sst_dma_free(struct sst_dma *dma)
-{
-
-	if (dma == NULL)
-		return;
-
-	if (dma->ch)
-		dma_release_channel(dma->ch);
-
-	if (dma->chip)
-		dw_remove(dma->chip);
-
-}
-
-/* create new generic firmware object */
-struct sst_fw *sst_fw_new(struct sst_dsp *dsp, 
-	const struct firmware *fw, void *private)
-{
-	struct sst_fw *sst_fw;
-	int err;
-
-	if (!dsp->ops->parse_fw)
-		return NULL;
-
-	sst_fw = kzalloc(sizeof(*sst_fw), GFP_KERNEL);
-	if (sst_fw == NULL)
-		return NULL;
-
-	sst_fw->dsp = dsp;
-	sst_fw->private = private;
-	sst_fw->size = fw->size;
-
-	/* allocate DMA buffer to store FW data */
-	sst_fw->dma_buf = dma_alloc_coherent(dsp->dma_dev, sst_fw->size,
-				&sst_fw->dmable_fw_paddr, GFP_KERNEL);
-	if (!sst_fw->dma_buf) {
-		dev_err(dsp->dev, "error: DMA alloc failed\n");
-		kfree(sst_fw);
-		return NULL;
-	}
-
-	/* copy FW data to DMA-able memory */
-	memcpy((void *)sst_fw->dma_buf, (void *)fw->data, fw->size);
-
-	if (dsp->fw_use_dma) {
-		err = sst_dsp_dma_get_channel(dsp, 0);
-		if (err < 0)
-			goto chan_err;
-	}
-
-	/* call core specific FW paser to load FW data into DSP */
-	err = dsp->ops->parse_fw(sst_fw);
-	if (err < 0) {
-		dev_err(dsp->dev, "error: parse fw failed %d\n", err);
-		goto parse_err;
-	}
-
-	if (dsp->fw_use_dma)
-		sst_dsp_dma_put_channel(dsp);
-
-	mutex_lock(&dsp->mutex);
-	list_add(&sst_fw->list, &dsp->fw_list);
-	mutex_unlock(&dsp->mutex);
-
-	return sst_fw;
-
-parse_err:
-	if (dsp->fw_use_dma)
-		sst_dsp_dma_put_channel(dsp);
-chan_err:
-	dma_free_coherent(dsp->dma_dev, sst_fw->size,
-				sst_fw->dma_buf,
-				sst_fw->dmable_fw_paddr);
-	sst_fw->dma_buf = NULL;
-	kfree(sst_fw);
-	return NULL;
-}
-EXPORT_SYMBOL_GPL(sst_fw_new);
-
-int sst_fw_reload(struct sst_fw *sst_fw)
-{
-	struct sst_dsp *dsp = sst_fw->dsp;
-	int ret;
-
-	dev_dbg(dsp->dev, "reloading firmware\n");
-
-	/* call core specific FW paser to load FW data into DSP */
-	ret = dsp->ops->parse_fw(sst_fw);
-	if (ret < 0)
-		dev_err(dsp->dev, "error: parse fw failed %d\n", ret);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(sst_fw_reload);
-
-void sst_fw_unload(struct sst_fw *sst_fw)
-{
-	struct sst_dsp *dsp = sst_fw->dsp;
-	struct sst_module *module, *mtmp;
-	struct sst_module_runtime *runtime, *rtmp;
-
-	dev_dbg(dsp->dev, "unloading firmware\n");
-
-	mutex_lock(&dsp->mutex);
-
-	/* check module by module */
-	list_for_each_entry_safe(module, mtmp, &dsp->module_list, list) {
-		if (module->sst_fw == sst_fw) {
-
-			/* remove runtime modules */
-			list_for_each_entry_safe(runtime, rtmp, &module->runtime_list, list) {
-
-				block_list_remove(dsp, &runtime->block_list);
-				list_del(&runtime->list);
-				kfree(runtime);
-			}
-
-			/* now remove the module */
-			block_list_remove(dsp, &module->block_list);
-			list_del(&module->list);
-			kfree(module);
-		}
-	}
-
-	/* remove all scratch blocks */
-	block_list_remove(dsp, &dsp->scratch_block_list);
-
-	mutex_unlock(&dsp->mutex);
-}
-EXPORT_SYMBOL_GPL(sst_fw_unload);
-
-/* free single firmware object */
-void sst_fw_free(struct sst_fw *sst_fw)
-{
-	struct sst_dsp *dsp = sst_fw->dsp;
-
-	mutex_lock(&dsp->mutex);
-	list_del(&sst_fw->list);
-	mutex_unlock(&dsp->mutex);
-
-	if (sst_fw->dma_buf)
-		dma_free_coherent(dsp->dma_dev, sst_fw->size, sst_fw->dma_buf,
-			sst_fw->dmable_fw_paddr);
-	kfree(sst_fw);
-}
-EXPORT_SYMBOL_GPL(sst_fw_free);
-
-/* free all firmware objects */
-void sst_fw_free_all(struct sst_dsp *dsp)
-{
-	struct sst_fw *sst_fw, *t;
-
-	mutex_lock(&dsp->mutex);
-	list_for_each_entry_safe(sst_fw, t, &dsp->fw_list, list) {
-
-		list_del(&sst_fw->list);
-		dma_free_coherent(dsp->dev, sst_fw->size, sst_fw->dma_buf,
-			sst_fw->dmable_fw_paddr);
-		kfree(sst_fw);
-	}
-	mutex_unlock(&dsp->mutex);
-}
-EXPORT_SYMBOL_GPL(sst_fw_free_all);
-
-/* create a new SST generic module from FW template */
-struct sst_module *sst_module_new(struct sst_fw *sst_fw,
-	struct sst_module_template *template, void *private)
-{
-	struct sst_dsp *dsp = sst_fw->dsp;
-	struct sst_module *sst_module;
-
-	sst_module = kzalloc(sizeof(*sst_module), GFP_KERNEL);
-	if (sst_module == NULL)
-		return NULL;
-
-	sst_module->id = template->id;
-	sst_module->dsp = dsp;
-	sst_module->sst_fw = sst_fw;
-	sst_module->scratch_size = template->scratch_size;
-	sst_module->persistent_size = template->persistent_size;
-	sst_module->entry = template->entry;
-	sst_module->state = SST_MODULE_STATE_UNLOADED;
-
-	INIT_LIST_HEAD(&sst_module->block_list);
-	INIT_LIST_HEAD(&sst_module->runtime_list);
-
-	mutex_lock(&dsp->mutex);
-	list_add(&sst_module->list, &dsp->module_list);
-	mutex_unlock(&dsp->mutex);
-
-	return sst_module;
-}
-EXPORT_SYMBOL_GPL(sst_module_new);
-
-/* free firmware module and remove from available list */
-void sst_module_free(struct sst_module *sst_module)
-{
-	struct sst_dsp *dsp = sst_module->dsp;
-
-	mutex_lock(&dsp->mutex);
-	list_del(&sst_module->list);
-	mutex_unlock(&dsp->mutex);
-
-	kfree(sst_module);
-}
-EXPORT_SYMBOL_GPL(sst_module_free);
-
-struct sst_module_runtime *sst_module_runtime_new(struct sst_module *module,
-	int id, void *private)
-{
-	struct sst_dsp *dsp = module->dsp;
-	struct sst_module_runtime *runtime;
-
-	runtime = kzalloc(sizeof(*runtime), GFP_KERNEL);
-	if (runtime == NULL)
-		return NULL;
-
-	runtime->id = id;
-	runtime->dsp = dsp;
-	runtime->module = module;
-	INIT_LIST_HEAD(&runtime->block_list);
-
-	mutex_lock(&dsp->mutex);
-	list_add(&runtime->list, &module->runtime_list);
-	mutex_unlock(&dsp->mutex);
-
-	return runtime;
-}
-EXPORT_SYMBOL_GPL(sst_module_runtime_new);
-
-void sst_module_runtime_free(struct sst_module_runtime *runtime)
-{
-	struct sst_dsp *dsp = runtime->dsp;
-
-	mutex_lock(&dsp->mutex);
-	list_del(&runtime->list);
-	mutex_unlock(&dsp->mutex);
-
-	kfree(runtime);
-}
-EXPORT_SYMBOL_GPL(sst_module_runtime_free);
-
-static struct sst_mem_block *find_block(struct sst_dsp *dsp,
-	struct sst_block_allocator *ba)
-{
-	struct sst_mem_block *block;
-
-	list_for_each_entry(block, &dsp->free_block_list, list) {
-		if (block->type == ba->type && block->offset == ba->offset)
-			return block;
-	}
-
-	return NULL;
-}
-
-/* Block allocator must be on block boundary */
-static int block_alloc_contiguous(struct sst_dsp *dsp,
-	struct sst_block_allocator *ba, struct list_head *block_list)
-{
-	struct list_head tmp = LIST_HEAD_INIT(tmp);
-	struct sst_mem_block *block;
-	u32 block_start = SST_HSW_BLOCK_ANY;
-	int size = ba->size, offset = ba->offset;
-
-	while (ba->size > 0) {
-
-		block = find_block(dsp, ba);
-		if (!block) {
-			list_splice(&tmp, &dsp->free_block_list);
-
-			ba->size = size;
-			ba->offset = offset;
-			return -ENOMEM;
-		}
-
-		list_move_tail(&block->list, &tmp);
-		ba->offset += block->size;
-		ba->size -= block->size;
-	}
-	ba->size = size;
-	ba->offset = offset;
-
-	list_for_each_entry(block, &tmp, list) {
-
-		if (block->offset < block_start)
-			block_start = block->offset;
-
-		list_add(&block->module_list, block_list);
-
-		dev_dbg(dsp->dev, "block allocated %d:%d at offset 0x%x\n",
-			block->type, block->index, block->offset);
-	}
-
-	list_splice(&tmp, &dsp->used_block_list);
-	return 0;
-}
-
-/* allocate first free DSP blocks for data - callers hold locks */
-static int block_alloc(struct sst_dsp *dsp, struct sst_block_allocator *ba,
-	struct list_head *block_list)
-{
-	struct sst_mem_block *block, *tmp;
-	int ret = 0;
-
-	if (ba->size == 0)
-		return 0;
-
-	/* find first free whole blocks that can hold module */
-	list_for_each_entry_safe(block, tmp, &dsp->free_block_list, list) {
-
-		/* ignore blocks with wrong type */
-		if (block->type != ba->type)
-			continue;
-
-		if (ba->size > block->size)
-			continue;
-
-		ba->offset = block->offset;
-		block->bytes_used = ba->size % block->size;
-		list_add(&block->module_list, block_list);
-		list_move(&block->list, &dsp->used_block_list);
-		dev_dbg(dsp->dev, "block allocated %d:%d at offset 0x%x\n",
-			block->type, block->index, block->offset);
-		return 0;
-	}
-
-	/* then find free multiple blocks that can hold module */
-	list_for_each_entry_safe(block, tmp, &dsp->free_block_list, list) {
-
-		/* ignore blocks with wrong type */
-		if (block->type != ba->type)
-			continue;
-
-		/* do we span > 1 blocks */
-		if (ba->size > block->size) {
-
-			/* align ba to block boundary */
-			ba->offset = block->offset;
-
-			ret = block_alloc_contiguous(dsp, ba, block_list);
-			if (ret == 0)
-				return ret;
-
-		}
-	}
-
-	/* not enough free block space */
-	return -ENOMEM;
-}
-
-int sst_alloc_blocks(struct sst_dsp *dsp, struct sst_block_allocator *ba,
-	struct list_head *block_list)
-{
-	int ret;
-
-	dev_dbg(dsp->dev, "block request 0x%x bytes at offset 0x%x type %d\n",
-		ba->size, ba->offset, ba->type);
-
-	mutex_lock(&dsp->mutex);
-
-	ret = block_alloc(dsp, ba, block_list);
-	if (ret < 0) {
-		dev_err(dsp->dev, "error: can't alloc blocks %d\n", ret);
-		goto out;
-	}
-
-	/* prepare DSP blocks for module usage */
-	ret = block_list_prepare(dsp, block_list);
-	if (ret < 0)
-		dev_err(dsp->dev, "error: prepare failed\n");
-
-out:
-	mutex_unlock(&dsp->mutex);
-	return ret;
-}
-EXPORT_SYMBOL_GPL(sst_alloc_blocks);
-
-int sst_free_blocks(struct sst_dsp *dsp, struct list_head *block_list)
-{
-	mutex_lock(&dsp->mutex);
-	block_list_remove(dsp, block_list);
-	mutex_unlock(&dsp->mutex);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(sst_free_blocks);
-
-/* allocate memory blocks for static module addresses - callers hold locks */
-static int block_alloc_fixed(struct sst_dsp *dsp, struct sst_block_allocator *ba,
-	struct list_head *block_list)
-{
-	struct sst_mem_block *block, *tmp;
-	struct sst_block_allocator ba_tmp = *ba;
-	u32 end = ba->offset + ba->size, block_end;
-	int err;
-
-	/* only IRAM/DRAM blocks are managed */
-	if (ba->type != SST_MEM_IRAM && ba->type != SST_MEM_DRAM)
-		return 0;
-
-	/* are blocks already attached to this module */
-	list_for_each_entry_safe(block, tmp, block_list, module_list) {
-
-		/* ignore blocks with wrong type */
-		if (block->type != ba->type)
-			continue;
-
-		block_end = block->offset + block->size;
-
-		/* find block that holds section */
-		if (ba->offset >= block->offset && end <= block_end)
-			return 0;
-
-		/* does block span more than 1 section */
-		if (ba->offset >= block->offset && ba->offset < block_end) {
-
-			/* align ba to block boundary */
-			ba_tmp.size -= block_end - ba->offset;
-			ba_tmp.offset = block_end;
-			err = block_alloc_contiguous(dsp, &ba_tmp, block_list);
-			if (err < 0)
-				return -ENOMEM;
-
-			/* module already owns blocks */
-			return 0;
-		}
-	}
-
-	/* find first free blocks that can hold section in free list */
-	list_for_each_entry_safe(block, tmp, &dsp->free_block_list, list) {
-		block_end = block->offset + block->size;
-
-		/* ignore blocks with wrong type */
-		if (block->type != ba->type)
-			continue;
-
-		/* find block that holds section */
-		if (ba->offset >= block->offset && end <= block_end) {
-
-			/* add block */
-			list_move(&block->list, &dsp->used_block_list);
-			list_add(&block->module_list, block_list);
-			dev_dbg(dsp->dev, "block allocated %d:%d at offset 0x%x\n",
-				block->type, block->index, block->offset);
-			return 0;
-		}
-
-		/* does block span more than 1 section */
-		if (ba->offset >= block->offset && ba->offset < block_end) {
-
-			/* add block */
-			list_move(&block->list, &dsp->used_block_list);
-			list_add(&block->module_list, block_list);
-			/* align ba to block boundary */
-			ba_tmp.size -= block_end - ba->offset;
-			ba_tmp.offset = block_end;
-
-			err = block_alloc_contiguous(dsp, &ba_tmp, block_list);
-			if (err < 0)
-				return -ENOMEM;
-
-			return 0;
-		}
-	}
-
-	return -ENOMEM;
-}
-
-/* Load fixed module data into DSP memory blocks */
-int sst_module_alloc_blocks(struct sst_module *module)
-{
-	struct sst_dsp *dsp = module->dsp;
-	struct sst_fw *sst_fw = module->sst_fw;
-	struct sst_block_allocator ba;
-	int ret;
-
-	memset(&ba, 0, sizeof(ba));
-	ba.size = module->size;
-	ba.type = module->type;
-	ba.offset = module->offset;
-
-	dev_dbg(dsp->dev, "block request 0x%x bytes at offset 0x%x type %d\n",
-		ba.size, ba.offset, ba.type);
-
-	mutex_lock(&dsp->mutex);
-
-	/* alloc blocks that includes this section */
-	ret = block_alloc_fixed(dsp, &ba, &module->block_list);
-	if (ret < 0) {
-		dev_err(dsp->dev,
-			"error: no free blocks for section at offset 0x%x size 0x%x\n",
-			module->offset, module->size);
-		mutex_unlock(&dsp->mutex);
-		return -ENOMEM;
-	}
-
-	/* prepare DSP blocks for module copy */
-	ret = block_list_prepare(dsp, &module->block_list);
-	if (ret < 0) {
-		dev_err(dsp->dev, "error: fw module prepare failed\n");
-		goto err;
-	}
-
-	/* copy partial module data to blocks */
-	if (dsp->fw_use_dma) {
-		ret = sst_dsp_dma_copyto(dsp,
-			dsp->addr.lpe_base + module->offset,
-			sst_fw->dmable_fw_paddr + module->data_offset,
-			module->size);
-		if (ret < 0) {
-			dev_err(dsp->dev, "error: module copy failed\n");
-			goto err;
-		}
-	} else
-		sst_memcpy32(dsp->addr.lpe + module->offset, module->data,
-			module->size);
-
-	mutex_unlock(&dsp->mutex);
-	return ret;
-
-err:
-	block_list_remove(dsp, &module->block_list);
-	mutex_unlock(&dsp->mutex);
-	return ret;
-}
-EXPORT_SYMBOL_GPL(sst_module_alloc_blocks);
-
-/* Unload entire module from DSP memory */
-int sst_module_free_blocks(struct sst_module *module)
-{
-	struct sst_dsp *dsp = module->dsp;
-
-	mutex_lock(&dsp->mutex);
-	block_list_remove(dsp, &module->block_list);
-	mutex_unlock(&dsp->mutex);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(sst_module_free_blocks);
-
-int sst_module_runtime_alloc_blocks(struct sst_module_runtime *runtime,
-	int offset)
-{
-	struct sst_dsp *dsp = runtime->dsp;
-	struct sst_module *module = runtime->module;
-	struct sst_block_allocator ba;
-	int ret;
-
-	if (module->persistent_size == 0)
-		return 0;
-
-	memset(&ba, 0, sizeof(ba));
-	ba.size = module->persistent_size;
-	ba.type = SST_MEM_DRAM;
-
-	mutex_lock(&dsp->mutex);
-
-	/* do we need to allocate at a fixed address ? */
-	if (offset != 0) {
-
-		ba.offset = offset;
-
-		dev_dbg(dsp->dev, "persistent fixed block request 0x%x bytes type %d offset 0x%x\n",
-			ba.size, ba.type, ba.offset);
-
-		/* alloc blocks that includes this section */
-		ret = block_alloc_fixed(dsp, &ba, &runtime->block_list);
-
-	} else {
-		dev_dbg(dsp->dev, "persistent block request 0x%x bytes type %d\n",
-			ba.size, ba.type);
-
-		/* alloc blocks that includes this section */
-		ret = block_alloc(dsp, &ba, &runtime->block_list);
-	}
-	if (ret < 0) {
-		dev_err(dsp->dev,
-		"error: no free blocks for runtime module size 0x%x\n",
-			module->persistent_size);
-		mutex_unlock(&dsp->mutex);
-		return -ENOMEM;
-	}
-	runtime->persistent_offset = ba.offset;
-
-	/* prepare DSP blocks for module copy */
-	ret = block_list_prepare(dsp, &runtime->block_list);
-	if (ret < 0) {
-		dev_err(dsp->dev, "error: runtime block prepare failed\n");
-		goto err;
-	}
-
-	mutex_unlock(&dsp->mutex);
-	return ret;
-
-err:
-	block_list_remove(dsp, &module->block_list);
-	mutex_unlock(&dsp->mutex);
-	return ret;
-}
-EXPORT_SYMBOL_GPL(sst_module_runtime_alloc_blocks);
-
-int sst_module_runtime_free_blocks(struct sst_module_runtime *runtime)
-{
-	struct sst_dsp *dsp = runtime->dsp;
-
-	mutex_lock(&dsp->mutex);
-	block_list_remove(dsp, &runtime->block_list);
-	mutex_unlock(&dsp->mutex);
-	return 0;
-}
-EXPORT_SYMBOL_GPL(sst_module_runtime_free_blocks);
-
-int sst_module_runtime_save(struct sst_module_runtime *runtime,
-	struct sst_module_runtime_context *context)
-{
-	struct sst_dsp *dsp = runtime->dsp;
-	struct sst_module *module = runtime->module;
-	int ret = 0;
-
-	dev_dbg(dsp->dev, "saving runtime %d memory at 0x%x size 0x%x\n",
-		runtime->id, runtime->persistent_offset,
-		module->persistent_size);
-
-	context->buffer = dma_alloc_coherent(dsp->dma_dev,
-		module->persistent_size,
-		&context->dma_buffer, GFP_DMA | GFP_KERNEL);
-	if (!context->buffer) {
-		dev_err(dsp->dev, "error: DMA context alloc failed\n");
-		return -ENOMEM;
-	}
-
-	mutex_lock(&dsp->mutex);
-
-	if (dsp->fw_use_dma) {
-
-		ret = sst_dsp_dma_get_channel(dsp, 0);
-		if (ret < 0)
-			goto err;
-
-		ret = sst_dsp_dma_copyfrom(dsp, context->dma_buffer,
-			dsp->addr.lpe_base + runtime->persistent_offset,
-			module->persistent_size);
-		sst_dsp_dma_put_channel(dsp);
-		if (ret < 0) {
-			dev_err(dsp->dev, "error: context copy failed\n");
-			goto err;
-		}
-	} else
-		sst_memcpy32(context->buffer, dsp->addr.lpe +
-			runtime->persistent_offset,
-			module->persistent_size);
-
-err:
-	mutex_unlock(&dsp->mutex);
-	return ret;
-}
-EXPORT_SYMBOL_GPL(sst_module_runtime_save);
-
-int sst_module_runtime_restore(struct sst_module_runtime *runtime,
-	struct sst_module_runtime_context *context)
-{
-	struct sst_dsp *dsp = runtime->dsp;
-	struct sst_module *module = runtime->module;
-	int ret = 0;
-
-	dev_dbg(dsp->dev, "restoring runtime %d memory at 0x%x size 0x%x\n",
-		runtime->id, runtime->persistent_offset,
-		module->persistent_size);
-
-	mutex_lock(&dsp->mutex);
-
-	if (!context->buffer) {
-		dev_info(dsp->dev, "no context buffer need to restore!\n");
-		goto err;
-	}
-
-	if (dsp->fw_use_dma) {
-
-		ret = sst_dsp_dma_get_channel(dsp, 0);
-		if (ret < 0)
-			goto err;
-
-		ret = sst_dsp_dma_copyto(dsp,
-			dsp->addr.lpe_base + runtime->persistent_offset,
-			context->dma_buffer, module->persistent_size);
-		sst_dsp_dma_put_channel(dsp);
-		if (ret < 0) {
-			dev_err(dsp->dev, "error: module copy failed\n");
-			goto err;
-		}
-	} else
-		sst_memcpy32(dsp->addr.lpe + runtime->persistent_offset,
-			context->buffer, module->persistent_size);
-
-	dma_free_coherent(dsp->dma_dev, module->persistent_size,
-				context->buffer, context->dma_buffer);
-	context->buffer = NULL;
-
-err:
-	mutex_unlock(&dsp->mutex);
-	return ret;
-}
-EXPORT_SYMBOL_GPL(sst_module_runtime_restore);
-
-/* register a DSP memory block for use with FW based modules */
-struct sst_mem_block *sst_mem_block_register(struct sst_dsp *dsp, u32 offset,
-	u32 size, enum sst_mem_type type, const struct sst_block_ops *ops,
-	u32 index, void *private)
-{
-	struct sst_mem_block *block;
-
-	block = kzalloc(sizeof(*block), GFP_KERNEL);
-	if (block == NULL)
-		return NULL;
-
-	block->offset = offset;
-	block->size = size;
-	block->index = index;
-	block->type = type;
-	block->dsp = dsp;
-	block->private = private;
-	block->ops = ops;
-
-	mutex_lock(&dsp->mutex);
-	list_add(&block->list, &dsp->free_block_list);
-	mutex_unlock(&dsp->mutex);
-
-	return block;
-}
-EXPORT_SYMBOL_GPL(sst_mem_block_register);
-
-/* unregister all DSP memory blocks */
-void sst_mem_block_unregister_all(struct sst_dsp *dsp)
-{
-	struct sst_mem_block *block, *tmp;
-
-	mutex_lock(&dsp->mutex);
-
-	/* unregister used blocks */
-	list_for_each_entry_safe(block, tmp, &dsp->used_block_list, list) {
-		list_del(&block->list);
-		kfree(block);
-	}
-
-	/* unregister free blocks */
-	list_for_each_entry_safe(block, tmp, &dsp->free_block_list, list) {
-		list_del(&block->list);
-		kfree(block);
-	}
-
-	mutex_unlock(&dsp->mutex);
-}
-EXPORT_SYMBOL_GPL(sst_mem_block_unregister_all);
-
-/* allocate scratch buffer blocks */
-int sst_block_alloc_scratch(struct sst_dsp *dsp)
-{
-	struct sst_module *module;
-	struct sst_block_allocator ba;
-	int ret;
-
-	mutex_lock(&dsp->mutex);
-
-	/* calculate required scratch size */
-	dsp->scratch_size = 0;
-	list_for_each_entry(module, &dsp->module_list, list) {
-		dev_dbg(dsp->dev, "module %d scratch req 0x%x bytes\n",
-			module->id, module->scratch_size);
-		if (dsp->scratch_size < module->scratch_size)
-			dsp->scratch_size = module->scratch_size;
-	}
-
-	dev_dbg(dsp->dev, "scratch buffer required is 0x%x bytes\n",
-		dsp->scratch_size);
-
-	if (dsp->scratch_size == 0) {
-		dev_info(dsp->dev, "no modules need scratch buffer\n");
-		mutex_unlock(&dsp->mutex);
-		return 0;
-	}
-
-	/* allocate blocks for module scratch buffers */
-	dev_dbg(dsp->dev, "allocating scratch blocks\n");
-
-	ba.size = dsp->scratch_size;
-	ba.type = SST_MEM_DRAM;
-
-	/* do we need to allocate at fixed offset */
-	if (dsp->scratch_offset != 0) {
-
-		dev_dbg(dsp->dev, "block request 0x%x bytes type %d at 0x%x\n",
-			ba.size, ba.type, ba.offset);
-
-		ba.offset = dsp->scratch_offset;
-
-		/* alloc blocks that includes this section */
-		ret = block_alloc_fixed(dsp, &ba, &dsp->scratch_block_list);
-
-	} else {
-		dev_dbg(dsp->dev, "block request 0x%x bytes type %d\n",
-			ba.size, ba.type);
-
-		ba.offset = 0;
-		ret = block_alloc(dsp, &ba, &dsp->scratch_block_list);
-	}
-	if (ret < 0) {
-		dev_err(dsp->dev, "error: can't alloc scratch blocks\n");
-		mutex_unlock(&dsp->mutex);
-		return ret;
-	}
-
-	ret = block_list_prepare(dsp, &dsp->scratch_block_list);
-	if (ret < 0) {
-		dev_err(dsp->dev, "error: scratch block prepare failed\n");
-		mutex_unlock(&dsp->mutex);
-		return ret;
-	}
-
-	/* assign the same offset of scratch to each module */
-	dsp->scratch_offset = ba.offset;
-	mutex_unlock(&dsp->mutex);
-	return dsp->scratch_size;
-}
-EXPORT_SYMBOL_GPL(sst_block_alloc_scratch);
-
-/* free all scratch blocks */
-void sst_block_free_scratch(struct sst_dsp *dsp)
-{
-	mutex_lock(&dsp->mutex);
-	block_list_remove(dsp, &dsp->scratch_block_list);
-	mutex_unlock(&dsp->mutex);
-}
-EXPORT_SYMBOL_GPL(sst_block_free_scratch);
-
-/* get a module from it's unique ID */
-struct sst_module *sst_module_get_from_id(struct sst_dsp *dsp, u32 id)
-{
-	struct sst_module *module;
-
-	mutex_lock(&dsp->mutex);
-
-	list_for_each_entry(module, &dsp->module_list, list) {
-		if (module->id == id) {
-			mutex_unlock(&dsp->mutex);
-			return module;
-		}
-	}
-
-	mutex_unlock(&dsp->mutex);
-	return NULL;
-}
-EXPORT_SYMBOL_GPL(sst_module_get_from_id);
-
-struct sst_module_runtime *sst_module_runtime_get_from_id(
-	struct sst_module *module, u32 id)
-{
-	struct sst_module_runtime *runtime;
-	struct sst_dsp *dsp = module->dsp;
-
-	mutex_lock(&dsp->mutex);
-
-	list_for_each_entry(runtime, &module->runtime_list, list) {
-		if (runtime->id == id) {
-			mutex_unlock(&dsp->mutex);
-			return runtime;
-		}
-	}
-
-	mutex_unlock(&dsp->mutex);
-	return NULL;
-}
-EXPORT_SYMBOL_GPL(sst_module_runtime_get_from_id);
-
-/* returns block address in DSP address space */
-u32 sst_dsp_get_offset(struct sst_dsp *dsp, u32 offset,
-	enum sst_mem_type type)
-{
-	switch (type) {
-	case SST_MEM_IRAM:
-		return offset - dsp->addr.iram_offset +
-			dsp->addr.dsp_iram_offset;
-	case SST_MEM_DRAM:
-		return offset - dsp->addr.dram_offset +
-			dsp->addr.dsp_dram_offset;
-	default:
-		return 0;
-	}
-}
-EXPORT_SYMBOL_GPL(sst_dsp_get_offset);
-
-struct sst_dsp *sst_dsp_new(struct device *dev,
-	struct sst_dsp_device *sst_dev, struct sst_pdata *pdata)
-{
-	struct sst_dsp *sst;
-	int err;
-
-	dev_dbg(dev, "initialising audio DSP id 0x%x\n", pdata->id);
-
-	sst = devm_kzalloc(dev, sizeof(*sst), GFP_KERNEL);
-	if (sst == NULL)
-		return NULL;
-
-	spin_lock_init(&sst->spinlock);
-	mutex_init(&sst->mutex);
-	sst->dev = dev;
-	sst->dma_dev = pdata->dma_dev;
-	sst->thread_context = sst_dev->thread_context;
-	sst->sst_dev = sst_dev;
-	sst->id = pdata->id;
-	sst->irq = pdata->irq;
-	sst->ops = sst_dev->ops;
-	sst->pdata = pdata;
-	INIT_LIST_HEAD(&sst->used_block_list);
-	INIT_LIST_HEAD(&sst->free_block_list);
-	INIT_LIST_HEAD(&sst->module_list);
-	INIT_LIST_HEAD(&sst->fw_list);
-	INIT_LIST_HEAD(&sst->scratch_block_list);
-
-	/* Initialise SST Audio DSP */
-	if (sst->ops->init) {
-		err = sst->ops->init(sst, pdata);
-		if (err < 0)
-			return NULL;
-	}
-
-	/* Register the ISR */
-	err = request_threaded_irq(sst->irq, sst->ops->irq_handler,
-		sst_dev->thread, IRQF_SHARED, "AudioDSP", sst);
-	if (err)
-		goto irq_err;
-
-	err = sst_dma_new(sst);
-	if (err)  {
-		dev_err(dev, "sst_dma_new failed %d\n", err);
-		goto dma_err;
-	}
-
-	return sst;
-
-dma_err:
-	free_irq(sst->irq, sst);
-irq_err:
-	if (sst->ops->free)
-		sst->ops->free(sst);
-
-	return NULL;
-}
-EXPORT_SYMBOL_GPL(sst_dsp_new);
-
-void sst_dsp_free(struct sst_dsp *sst)
-{
-	free_irq(sst->irq, sst);
-	if (sst->ops->free)
-		sst->ops->free(sst);
-
-	sst_dma_free(sst->dma);
-}
-EXPORT_SYMBOL_GPL(sst_dsp_free);
-
-MODULE_DESCRIPTION("Intel SST Firmware Loader");
-MODULE_LICENSE("GPL v2");
-- 
2.17.1

