The utils.c contains wrappers and implementation for accessing iomem mapped regions and a single unrelated function to create a compressed page table from snd_dma_buffer for firmware use.
The latter is used by the PCM and the dma trace code and it needs to be moved to a generic source/header for the client conversion to be possible.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@linux.intel.com Reviewed-by: Kai Vehmanen kai.vehmanen@linux.intel.com Reviewed-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Reviewed-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com --- sound/soc/sof/Makefile | 5 +- sound/soc/sof/compress.c | 1 + sound/soc/sof/{utils.c => iomem-utils.c} | 61 +------------------ sound/soc/sof/pcm.c | 1 + sound/soc/sof/sof-priv.h | 4 -- sound/soc/sof/sof-utils.c | 77 ++++++++++++++++++++++++ sound/soc/sof/sof-utils.h | 19 ++++++ sound/soc/sof/trace.c | 1 + 8 files changed, 104 insertions(+), 65 deletions(-) rename sound/soc/sof/{utils.c => iomem-utils.c} (59%) create mode 100644 sound/soc/sof/sof-utils.c create mode 100644 sound/soc/sof/sof-utils.h
diff --git a/sound/soc/sof/Makefile b/sound/soc/sof/Makefile index 964b429146be..4b9fccacc2b7 100644 --- a/sound/soc/sof/Makefile +++ b/sound/soc/sof/Makefile @@ -1,7 +1,7 @@ # SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
snd-sof-objs := core.o ops.o loader.o ipc.o pcm.o pm.o debug.o topology.o\ - control.o trace.o utils.o sof-audio.o stream-ipc.o + control.o trace.o iomem-utils.o sof-audio.o stream-ipc.o
snd-sof-$(CONFIG_SND_SOC_SOF_DEBUG_PROBES) += sof-probes.o snd-sof-$(CONFIG_SND_SOC_SOF_COMPRESS) += compress.o @@ -12,9 +12,12 @@ snd-sof-of-objs := sof-of-dev.o
snd-sof-nocodec-objs := nocodec.o
+snd-sof-utils-objs := sof-utils.o + obj-$(CONFIG_SND_SOC_SOF) += snd-sof.o obj-$(CONFIG_SND_SOC_SOF_NOCODEC) += snd-sof-nocodec.o
+obj-$(CONFIG_SND_SOC_SOF) += snd-sof-utils.o
obj-$(CONFIG_SND_SOC_SOF_ACPI_DEV) += snd-sof-acpi.o obj-$(CONFIG_SND_SOC_SOF_OF_DEV) += snd-sof-of.o diff --git a/sound/soc/sof/compress.c b/sound/soc/sof/compress.c index 91a9c95929cd..2137d1d65dd9 100644 --- a/sound/soc/sof/compress.c +++ b/sound/soc/sof/compress.c @@ -9,6 +9,7 @@ #include <sound/compress_driver.h> #include "sof-audio.h" #include "sof-priv.h" +#include "sof-utils.h"
static void sof_set_transferred_bytes(struct snd_compr_tstamp *tstamp, u64 host_pos, u64 buffer_size) diff --git a/sound/soc/sof/utils.c b/sound/soc/sof/iomem-utils.c similarity index 59% rename from sound/soc/sof/utils.c rename to sound/soc/sof/iomem-utils.c index 66fa6602fb67..3f57f6cf6542 100644 --- a/sound/soc/sof/utils.c +++ b/sound/soc/sof/iomem-utils.c @@ -3,7 +3,7 @@ // 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) 2018 Intel Corporation. All rights reserved. +// Copyright(c) 2018-2022 Intel Corporation. All rights reserved. // // Author: Keyon Jie yang.jie@linux.intel.com // @@ -125,62 +125,3 @@ int sof_block_read(struct snd_sof_dev *sdev, enum snd_sof_fw_blk_type blk_type, return 0; } EXPORT_SYMBOL(sof_block_read); - -/* - * Generic buffer page table creation. - * Take the each physical page address and drop the least significant unused - * bits from each (based on PAGE_SIZE). Then pack valid page address bits - * into compressed page table. - */ - -int snd_sof_create_page_table(struct device *dev, - struct snd_dma_buffer *dmab, - unsigned char *page_table, size_t size) -{ - int i, pages; - - pages = snd_sgbuf_aligned_pages(size); - - dev_dbg(dev, "generating page table for %p size 0x%zx pages %d\n", - dmab->area, size, pages); - - for (i = 0; i < pages; i++) { - /* - * The number of valid address bits for each page is 20. - * idx determines the byte position within page_table - * where the current page's address is stored - * in the compressed page_table. - * This can be calculated by multiplying the page number by 2.5. - */ - u32 idx = (5 * i) >> 1; - u32 pfn = snd_sgbuf_get_addr(dmab, i * PAGE_SIZE) >> PAGE_SHIFT; - u8 *pg_table; - - dev_vdbg(dev, "pfn i %i idx %d pfn %x\n", i, idx, pfn); - - pg_table = (u8 *)(page_table + idx); - - /* - * pagetable compression: - * byte 0 byte 1 byte 2 byte 3 byte 4 byte 5 - * ___________pfn 0__________ __________pfn 1___________ _pfn 2... - * .... .... .... .... .... .... .... .... .... .... .... - * It is created by: - * 1. set current location to 0, PFN index i to 0 - * 2. put pfn[i] at current location in Little Endian byte order - * 3. calculate an intermediate value as - * x = (pfn[i+1] << 4) | (pfn[i] & 0xf) - * 4. put x at offset (current location + 2) in LE byte order - * 5. increment current location by 5 bytes, increment i by 2 - * 6. continue to (2) - */ - if (i & 1) - put_unaligned_le32((pg_table[0] & 0xf) | pfn << 4, - pg_table); - else - put_unaligned_le32(pfn, pg_table); - } - - return pages; -} -EXPORT_SYMBOL(snd_sof_create_page_table); diff --git a/sound/soc/sof/pcm.c b/sound/soc/sof/pcm.c index 37fb8e6cd493..62cb61655761 100644 --- a/sound/soc/sof/pcm.c +++ b/sound/soc/sof/pcm.c @@ -19,6 +19,7 @@ #if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_PROBES) #include "sof-probes.h" #endif +#include "sof-utils.h"
/* Create DMA buffer page table for DSP */ static int create_page_table(struct snd_soc_component *component, diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h index 2e474048d708..27d2f3ca2f06 100644 --- a/sound/soc/sof/sof-priv.h +++ b/sound/soc/sof/sof-priv.h @@ -502,10 +502,6 @@ void snd_sof_complete(struct device *dev);
void snd_sof_new_platform_drv(struct snd_sof_dev *sdev);
-int snd_sof_create_page_table(struct device *dev, - struct snd_dma_buffer *dmab, - unsigned char *page_table, size_t size); - /* * Firmware loading. */ diff --git a/sound/soc/sof/sof-utils.c b/sound/soc/sof/sof-utils.c new file mode 100644 index 000000000000..a3300ecee062 --- /dev/null +++ b/sound/soc/sof/sof-utils.c @@ -0,0 +1,77 @@ +// 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) 2018-2022 Intel Corporation. All rights reserved. +// +// Author: Keyon Jie yang.jie@linux.intel.com +// + +#include <asm/unaligned.h> +#include <linux/io-64-nonatomic-lo-hi.h> +#include <linux/device.h> +#include <sound/memalloc.h> +#include <linux/module.h> +#include "sof-utils.h" + +/* + * Generic buffer page table creation. + * Take the each physical page address and drop the least significant unused + * bits from each (based on PAGE_SIZE). Then pack valid page address bits + * into compressed page table. + */ + +int snd_sof_create_page_table(struct device *dev, + struct snd_dma_buffer *dmab, + unsigned char *page_table, size_t size) +{ + int i, pages; + + pages = snd_sgbuf_aligned_pages(size); + + dev_dbg(dev, "generating page table for %p size 0x%zx pages %d\n", + dmab->area, size, pages); + + for (i = 0; i < pages; i++) { + /* + * The number of valid address bits for each page is 20. + * idx determines the byte position within page_table + * where the current page's address is stored + * in the compressed page_table. + * This can be calculated by multiplying the page number by 2.5. + */ + u32 idx = (5 * i) >> 1; + u32 pfn = snd_sgbuf_get_addr(dmab, i * PAGE_SIZE) >> PAGE_SHIFT; + u8 *pg_table; + + dev_vdbg(dev, "pfn i %i idx %d pfn %x\n", i, idx, pfn); + + pg_table = (u8 *)(page_table + idx); + + /* + * pagetable compression: + * byte 0 byte 1 byte 2 byte 3 byte 4 byte 5 + * ___________pfn 0__________ __________pfn 1___________ _pfn 2... + * .... .... .... .... .... .... .... .... .... .... .... + * It is created by: + * 1. set current location to 0, PFN index i to 0 + * 2. put pfn[i] at current location in Little Endian byte order + * 3. calculate an intermediate value as + * x = (pfn[i+1] << 4) | (pfn[i] & 0xf) + * 4. put x at offset (current location + 2) in LE byte order + * 5. increment current location by 5 bytes, increment i by 2 + * 6. continue to (2) + */ + if (i & 1) + put_unaligned_le32((pg_table[0] & 0xf) | pfn << 4, + pg_table); + else + put_unaligned_le32(pfn, pg_table); + } + + return pages; +} +EXPORT_SYMBOL(snd_sof_create_page_table); + +MODULE_LICENSE("Dual BSD/GPL"); diff --git a/sound/soc/sof/sof-utils.h b/sound/soc/sof/sof-utils.h new file mode 100644 index 000000000000..6f902893807e --- /dev/null +++ b/sound/soc/sof/sof-utils.h @@ -0,0 +1,19 @@ +/* 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) 2022 Intel Corporation. All rights reserved. + */ + +#ifndef __SOC_SOF_UTILS_H +#define __SOC_SOF_UTILS_H + +struct snd_dma_buffer; +struct device; + +int snd_sof_create_page_table(struct device *dev, + struct snd_dma_buffer *dmab, + unsigned char *page_table, size_t size); + +#endif diff --git a/sound/soc/sof/trace.c b/sound/soc/sof/trace.c index 2335d0f06d42..104388c551cb 100644 --- a/sound/soc/sof/trace.c +++ b/sound/soc/sof/trace.c @@ -12,6 +12,7 @@ #include <linux/sched/signal.h> #include "sof-priv.h" #include "ops.h" +#include "sof-utils.h"
#define TRACE_FILTER_ELEMENTS_PER_ENTRY 4 #define TRACE_FILTER_MAX_CONFIG_STRING_LENGTH 1024