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	ASoC: SOF: Add DSP HW abstraction operations
Add operation pointers that can be called by core to control a wide variety of DSP targets. The DSP HW drivers will fill in these operations. Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Mark Brown <broonie@kernel.org>
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					 2 changed files with 562 additions and 0 deletions
				
			
		
							
								
								
									
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								sound/soc/sof/ops.c
									
									
									
									
									
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								sound/soc/sof/ops.c
									
									
									
									
									
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// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
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//
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// This file is provided under a dual BSD/GPLv2 license.  When using or
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// redistributing this file, you may do so under either license.
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//
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// Copyright(c) 2018 Intel Corporation. All rights reserved.
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//
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// Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
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//
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#include <linux/pci.h>
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#include "ops.h"
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static
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bool snd_sof_pci_update_bits_unlocked(struct snd_sof_dev *sdev, u32 offset,
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				      u32 mask, u32 value)
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{
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	struct pci_dev *pci = to_pci_dev(sdev->dev);
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	unsigned int old, new;
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	u32 ret;
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	pci_read_config_dword(pci, offset, &ret);
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	old = ret;
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	dev_dbg(sdev->dev, "Debug PCIR: %8.8x at  %8.8x\n", old & mask, offset);
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	new = (old & ~mask) | (value & mask);
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	if (old == new)
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		return false;
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	pci_write_config_dword(pci, offset, new);
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	dev_dbg(sdev->dev, "Debug PCIW: %8.8x at  %8.8x\n", value,
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		offset);
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	return true;
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}
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bool snd_sof_pci_update_bits(struct snd_sof_dev *sdev, u32 offset,
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			     u32 mask, u32 value)
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{
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	unsigned long flags;
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	bool change;
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	spin_lock_irqsave(&sdev->hw_lock, flags);
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	change = snd_sof_pci_update_bits_unlocked(sdev, offset, mask, value);
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	spin_unlock_irqrestore(&sdev->hw_lock, flags);
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	return change;
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}
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EXPORT_SYMBOL(snd_sof_pci_update_bits);
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bool snd_sof_dsp_update_bits_unlocked(struct snd_sof_dev *sdev, u32 bar,
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				      u32 offset, u32 mask, u32 value)
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{
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	unsigned int old, new;
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	u32 ret;
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	ret = snd_sof_dsp_read(sdev, bar, offset);
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	old = ret;
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	new = (old & ~mask) | (value & mask);
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	if (old == new)
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		return false;
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	snd_sof_dsp_write(sdev, bar, offset, new);
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	return true;
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}
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EXPORT_SYMBOL(snd_sof_dsp_update_bits_unlocked);
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bool snd_sof_dsp_update_bits64_unlocked(struct snd_sof_dev *sdev, u32 bar,
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					u32 offset, u64 mask, u64 value)
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{
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	u64 old, new;
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	old = snd_sof_dsp_read64(sdev, bar, offset);
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	new = (old & ~mask) | (value & mask);
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	if (old == new)
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		return false;
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	snd_sof_dsp_write64(sdev, bar, offset, new);
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	return true;
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}
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EXPORT_SYMBOL(snd_sof_dsp_update_bits64_unlocked);
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/* This is for registers bits with attribute RWC */
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bool snd_sof_dsp_update_bits(struct snd_sof_dev *sdev, u32 bar, u32 offset,
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			     u32 mask, u32 value)
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{
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	unsigned long flags;
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	bool change;
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	spin_lock_irqsave(&sdev->hw_lock, flags);
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	change = snd_sof_dsp_update_bits_unlocked(sdev, bar, offset, mask,
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						  value);
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	spin_unlock_irqrestore(&sdev->hw_lock, flags);
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	return change;
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}
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EXPORT_SYMBOL(snd_sof_dsp_update_bits);
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bool snd_sof_dsp_update_bits64(struct snd_sof_dev *sdev, u32 bar, u32 offset,
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			       u64 mask, u64 value)
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{
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	unsigned long flags;
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	bool change;
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	spin_lock_irqsave(&sdev->hw_lock, flags);
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	change = snd_sof_dsp_update_bits64_unlocked(sdev, bar, offset, mask,
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						    value);
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	spin_unlock_irqrestore(&sdev->hw_lock, flags);
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	return change;
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}
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EXPORT_SYMBOL(snd_sof_dsp_update_bits64);
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static
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void snd_sof_dsp_update_bits_forced_unlocked(struct snd_sof_dev *sdev, u32 bar,
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					     u32 offset, u32 mask, u32 value)
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{
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	unsigned int old, new;
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	u32 ret;
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	ret = snd_sof_dsp_read(sdev, bar, offset);
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	old = ret;
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	new = (old & ~mask) | (value & mask);
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	snd_sof_dsp_write(sdev, bar, offset, new);
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}
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/* This is for registers bits with attribute RWC */
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void snd_sof_dsp_update_bits_forced(struct snd_sof_dev *sdev, u32 bar,
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				    u32 offset, u32 mask, u32 value)
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{
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	unsigned long flags;
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	spin_lock_irqsave(&sdev->hw_lock, flags);
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	snd_sof_dsp_update_bits_forced_unlocked(sdev, bar, offset, mask, value);
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	spin_unlock_irqrestore(&sdev->hw_lock, flags);
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}
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EXPORT_SYMBOL(snd_sof_dsp_update_bits_forced);
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void snd_sof_dsp_panic(struct snd_sof_dev *sdev, u32 offset)
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{
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	dev_err(sdev->dev, "error : DSP panic!\n");
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	/*
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	 * check if DSP is not ready and did not set the dsp_oops_offset.
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	 * if the dsp_oops_offset is not set, set it from the panic message.
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	 * Also add a check to memory window setting with panic message.
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	 */
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	if (!sdev->dsp_oops_offset)
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		sdev->dsp_oops_offset = offset;
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	else
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		dev_dbg(sdev->dev, "panic: dsp_oops_offset %zu offset %d\n",
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			sdev->dsp_oops_offset, offset);
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	snd_sof_dsp_dbg_dump(sdev, SOF_DBG_REGS | SOF_DBG_MBOX);
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	snd_sof_trace_notify_for_error(sdev);
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}
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EXPORT_SYMBOL(snd_sof_dsp_panic);
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		||||
							
								
								
									
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								sound/soc/sof/ops.h
									
									
									
									
									
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								sound/soc/sof/ops.h
									
									
									
									
									
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/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
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/*
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 * This file is provided under a dual BSD/GPLv2 license.  When using or
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 * redistributing this file, you may do so under either license.
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 *
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 * Copyright(c) 2018 Intel Corporation. All rights reserved.
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 *
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 * Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
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 */
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#ifndef __SOUND_SOC_SOF_IO_H
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#define __SOUND_SOC_SOF_IO_H
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#include <linux/device.h>
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <sound/pcm.h>
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#include "sof-priv.h"
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#define sof_ops(sdev) \
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	((sdev)->pdata->desc->ops)
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/* Mandatory operations are verified during probing */
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/* init */
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static inline int snd_sof_probe(struct snd_sof_dev *sdev)
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{
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	return sof_ops(sdev)->probe(sdev);
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}
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static inline int snd_sof_remove(struct snd_sof_dev *sdev)
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{
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	if (sof_ops(sdev)->remove)
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		return sof_ops(sdev)->remove(sdev);
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	return 0;
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}
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/* control */
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/*
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 * snd_sof_dsp_run returns the core mask of the cores that are available
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 * after successful fw boot
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 */
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static inline int snd_sof_dsp_run(struct snd_sof_dev *sdev)
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{
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	return sof_ops(sdev)->run(sdev);
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}
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static inline int snd_sof_dsp_stall(struct snd_sof_dev *sdev)
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{
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	if (sof_ops(sdev)->stall)
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		return sof_ops(sdev)->stall(sdev);
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	return 0;
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}
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static inline int snd_sof_dsp_reset(struct snd_sof_dev *sdev)
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{
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	if (sof_ops(sdev)->reset)
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		return sof_ops(sdev)->reset(sdev);
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	return 0;
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}
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/* dsp core power up/power down */
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static inline int snd_sof_dsp_core_power_up(struct snd_sof_dev *sdev,
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					    unsigned int core_mask)
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{
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	if (sof_ops(sdev)->core_power_up)
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		return sof_ops(sdev)->core_power_up(sdev, core_mask);
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	return 0;
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}
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static inline int snd_sof_dsp_core_power_down(struct snd_sof_dev *sdev,
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					      unsigned int core_mask)
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{
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	if (sof_ops(sdev)->core_power_down)
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		return sof_ops(sdev)->core_power_down(sdev, core_mask);
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	return 0;
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}
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/* pre/post fw load */
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static inline int snd_sof_dsp_pre_fw_run(struct snd_sof_dev *sdev)
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{
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	if (sof_ops(sdev)->pre_fw_run)
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		return sof_ops(sdev)->pre_fw_run(sdev);
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	return 0;
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}
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static inline int snd_sof_dsp_post_fw_run(struct snd_sof_dev *sdev)
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{
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	if (sof_ops(sdev)->post_fw_run)
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		return sof_ops(sdev)->post_fw_run(sdev);
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	return 0;
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}
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/* power management */
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static inline int snd_sof_dsp_resume(struct snd_sof_dev *sdev)
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{
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	if (sof_ops(sdev)->resume)
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		return sof_ops(sdev)->resume(sdev);
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	return 0;
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}
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static inline int snd_sof_dsp_suspend(struct snd_sof_dev *sdev, int state)
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{
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	if (sof_ops(sdev)->suspend)
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		return sof_ops(sdev)->suspend(sdev, state);
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	return 0;
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}
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static inline int snd_sof_dsp_runtime_resume(struct snd_sof_dev *sdev)
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{
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	if (sof_ops(sdev)->runtime_resume)
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		return sof_ops(sdev)->runtime_resume(sdev);
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	return 0;
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}
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static inline int snd_sof_dsp_runtime_suspend(struct snd_sof_dev *sdev,
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					      int state)
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{
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	if (sof_ops(sdev)->runtime_suspend)
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		return sof_ops(sdev)->runtime_suspend(sdev, state);
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	return 0;
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}
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static inline int snd_sof_dsp_set_clk(struct snd_sof_dev *sdev, u32 freq)
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{
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	if (sof_ops(sdev)->set_clk)
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		return sof_ops(sdev)->set_clk(sdev, freq);
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	return 0;
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}
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/* debug */
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static inline void snd_sof_dsp_dbg_dump(struct snd_sof_dev *sdev, u32 flags)
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{
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	if (sof_ops(sdev)->dbg_dump)
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		return sof_ops(sdev)->dbg_dump(sdev, flags);
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}
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/* register IO */
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static inline void snd_sof_dsp_write(struct snd_sof_dev *sdev, u32 bar,
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				     u32 offset, u32 value)
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{
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	if (sof_ops(sdev)->write) {
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		sof_ops(sdev)->write(sdev, sdev->bar[bar] + offset, value);
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		return;
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	}
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	dev_err_ratelimited(sdev->dev, "error: %s not defined\n", __func__);
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}
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static inline void snd_sof_dsp_write64(struct snd_sof_dev *sdev, u32 bar,
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				       u32 offset, u64 value)
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{
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	if (sof_ops(sdev)->write64) {
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		sof_ops(sdev)->write64(sdev, sdev->bar[bar] + offset, value);
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		return;
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	}
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	dev_err_ratelimited(sdev->dev, "error: %s not defined\n", __func__);
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}
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static inline u32 snd_sof_dsp_read(struct snd_sof_dev *sdev, u32 bar,
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				   u32 offset)
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{
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	if (sof_ops(sdev)->read)
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		return sof_ops(sdev)->read(sdev, sdev->bar[bar] + offset);
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	dev_err(sdev->dev, "error: %s not defined\n", __func__);
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	return -ENOTSUPP;
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}
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static inline u64 snd_sof_dsp_read64(struct snd_sof_dev *sdev, u32 bar,
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				     u32 offset)
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{
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	if (sof_ops(sdev)->read64)
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		return sof_ops(sdev)->read64(sdev, sdev->bar[bar] + offset);
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 | 
			
		||||
	dev_err(sdev->dev, "error: %s not defined\n", __func__);
 | 
			
		||||
	return -ENOTSUPP;
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
/* block IO */
 | 
			
		||||
static inline void snd_sof_dsp_block_read(struct snd_sof_dev *sdev, u32 bar,
 | 
			
		||||
					  u32 offset, void *dest, size_t bytes)
 | 
			
		||||
{
 | 
			
		||||
	sof_ops(sdev)->block_read(sdev, bar, offset, dest, bytes);
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
static inline void snd_sof_dsp_block_write(struct snd_sof_dev *sdev, u32 bar,
 | 
			
		||||
					   u32 offset, void *src, size_t bytes)
 | 
			
		||||
{
 | 
			
		||||
	sof_ops(sdev)->block_write(sdev, bar, offset, src, bytes);
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
/* ipc */
 | 
			
		||||
static inline int snd_sof_dsp_send_msg(struct snd_sof_dev *sdev,
 | 
			
		||||
				       struct snd_sof_ipc_msg *msg)
 | 
			
		||||
{
 | 
			
		||||
	return sof_ops(sdev)->send_msg(sdev, msg);
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
/* host DMA trace */
 | 
			
		||||
static inline int snd_sof_dma_trace_init(struct snd_sof_dev *sdev,
 | 
			
		||||
					 u32 *stream_tag)
 | 
			
		||||
{
 | 
			
		||||
	if (sof_ops(sdev)->trace_init)
 | 
			
		||||
		return sof_ops(sdev)->trace_init(sdev, stream_tag);
 | 
			
		||||
 | 
			
		||||
	return 0;
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
static inline int snd_sof_dma_trace_release(struct snd_sof_dev *sdev)
 | 
			
		||||
{
 | 
			
		||||
	if (sof_ops(sdev)->trace_release)
 | 
			
		||||
		return sof_ops(sdev)->trace_release(sdev);
 | 
			
		||||
 | 
			
		||||
	return 0;
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
static inline int snd_sof_dma_trace_trigger(struct snd_sof_dev *sdev, int cmd)
 | 
			
		||||
{
 | 
			
		||||
	if (sof_ops(sdev)->trace_trigger)
 | 
			
		||||
		return sof_ops(sdev)->trace_trigger(sdev, cmd);
 | 
			
		||||
 | 
			
		||||
	return 0;
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
/* host PCM ops */
 | 
			
		||||
static inline int
 | 
			
		||||
snd_sof_pcm_platform_open(struct snd_sof_dev *sdev,
 | 
			
		||||
			  struct snd_pcm_substream *substream)
 | 
			
		||||
{
 | 
			
		||||
	if (sof_ops(sdev) && sof_ops(sdev)->pcm_open)
 | 
			
		||||
		return sof_ops(sdev)->pcm_open(sdev, substream);
 | 
			
		||||
 | 
			
		||||
	return 0;
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
/* disconnect pcm substream to a host stream */
 | 
			
		||||
static inline int
 | 
			
		||||
snd_sof_pcm_platform_close(struct snd_sof_dev *sdev,
 | 
			
		||||
			   struct snd_pcm_substream *substream)
 | 
			
		||||
{
 | 
			
		||||
	if (sof_ops(sdev) && sof_ops(sdev)->pcm_close)
 | 
			
		||||
		return sof_ops(sdev)->pcm_close(sdev, substream);
 | 
			
		||||
 | 
			
		||||
	return 0;
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
/* host stream hw params */
 | 
			
		||||
static inline int
 | 
			
		||||
snd_sof_pcm_platform_hw_params(struct snd_sof_dev *sdev,
 | 
			
		||||
			       struct snd_pcm_substream *substream,
 | 
			
		||||
			       struct snd_pcm_hw_params *params,
 | 
			
		||||
			       struct sof_ipc_stream_params *ipc_params)
 | 
			
		||||
{
 | 
			
		||||
	if (sof_ops(sdev) && sof_ops(sdev)->pcm_hw_params)
 | 
			
		||||
		return sof_ops(sdev)->pcm_hw_params(sdev, substream,
 | 
			
		||||
						    params, ipc_params);
 | 
			
		||||
 | 
			
		||||
	return 0;
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
/* host stream trigger */
 | 
			
		||||
static inline int
 | 
			
		||||
snd_sof_pcm_platform_trigger(struct snd_sof_dev *sdev,
 | 
			
		||||
			     struct snd_pcm_substream *substream, int cmd)
 | 
			
		||||
{
 | 
			
		||||
	if (sof_ops(sdev) && sof_ops(sdev)->pcm_trigger)
 | 
			
		||||
		return sof_ops(sdev)->pcm_trigger(sdev, substream, cmd);
 | 
			
		||||
 | 
			
		||||
	return 0;
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
/* host DSP message data */
 | 
			
		||||
static inline void snd_sof_ipc_msg_data(struct snd_sof_dev *sdev,
 | 
			
		||||
					struct snd_pcm_substream *substream,
 | 
			
		||||
					void *p, size_t sz)
 | 
			
		||||
{
 | 
			
		||||
	sof_ops(sdev)->ipc_msg_data(sdev, substream, p, sz);
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
/* host configure DSP HW parameters */
 | 
			
		||||
static inline int
 | 
			
		||||
snd_sof_ipc_pcm_params(struct snd_sof_dev *sdev,
 | 
			
		||||
		       struct snd_pcm_substream *substream,
 | 
			
		||||
		       const struct sof_ipc_pcm_params_reply *reply)
 | 
			
		||||
{
 | 
			
		||||
	return sof_ops(sdev)->ipc_pcm_params(sdev, substream, reply);
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
/* host stream pointer */
 | 
			
		||||
static inline snd_pcm_uframes_t
 | 
			
		||||
snd_sof_pcm_platform_pointer(struct snd_sof_dev *sdev,
 | 
			
		||||
			     struct snd_pcm_substream *substream)
 | 
			
		||||
{
 | 
			
		||||
	if (sof_ops(sdev) && sof_ops(sdev)->pcm_pointer)
 | 
			
		||||
		return sof_ops(sdev)->pcm_pointer(sdev, substream);
 | 
			
		||||
 | 
			
		||||
	return 0;
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
static inline const struct snd_sof_dsp_ops
 | 
			
		||||
*sof_get_ops(const struct sof_dev_desc *d,
 | 
			
		||||
	     const struct sof_ops_table mach_ops[], int asize)
 | 
			
		||||
{
 | 
			
		||||
	int i;
 | 
			
		||||
 | 
			
		||||
	for (i = 0; i < asize; i++) {
 | 
			
		||||
		if (d == mach_ops[i].desc)
 | 
			
		||||
			return mach_ops[i].ops;
 | 
			
		||||
	}
 | 
			
		||||
 | 
			
		||||
	/* not found */
 | 
			
		||||
	return NULL;
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
/**
 | 
			
		||||
 * snd_sof_dsp_register_poll_timeout - Periodically poll an address
 | 
			
		||||
 * until a condition is met or a timeout occurs
 | 
			
		||||
 * @op: accessor function (takes @addr as its only argument)
 | 
			
		||||
 * @addr: Address to poll
 | 
			
		||||
 * @val: Variable to read the value into
 | 
			
		||||
 * @cond: Break condition (usually involving @val)
 | 
			
		||||
 * @sleep_us: Maximum time to sleep between reads in us (0
 | 
			
		||||
 *            tight-loops).  Should be less than ~20ms since usleep_range
 | 
			
		||||
 *            is used (see Documentation/timers/timers-howto.txt).
 | 
			
		||||
 * @timeout_us: Timeout in us, 0 means never timeout
 | 
			
		||||
 *
 | 
			
		||||
 * Returns 0 on success and -ETIMEDOUT upon a timeout. In either
 | 
			
		||||
 * case, the last read value at @addr is stored in @val. Must not
 | 
			
		||||
 * be called from atomic context if sleep_us or timeout_us are used.
 | 
			
		||||
 *
 | 
			
		||||
 * This is modelled after the readx_poll_timeout macros in linux/iopoll.h.
 | 
			
		||||
 */
 | 
			
		||||
#define snd_sof_dsp_read_poll_timeout(sdev, bar, offset, val, cond, sleep_us, timeout_us) \
 | 
			
		||||
({ \
 | 
			
		||||
	u64 __timeout_us = (timeout_us); \
 | 
			
		||||
	unsigned long __sleep_us = (sleep_us); \
 | 
			
		||||
	ktime_t __timeout = ktime_add_us(ktime_get(), __timeout_us); \
 | 
			
		||||
	might_sleep_if((__sleep_us) != 0); \
 | 
			
		||||
	for (;;) {							\
 | 
			
		||||
		(val) = snd_sof_dsp_read(sdev, bar, offset);		\
 | 
			
		||||
		if (cond) { \
 | 
			
		||||
			dev_dbg(sdev->dev, \
 | 
			
		||||
				"FW Poll Status: reg=%#x successful\n", (val)); \
 | 
			
		||||
			break; \
 | 
			
		||||
		} \
 | 
			
		||||
		if (__timeout_us && \
 | 
			
		||||
		    ktime_compare(ktime_get(), __timeout) > 0) { \
 | 
			
		||||
			(val) = snd_sof_dsp_read(sdev, bar, offset); \
 | 
			
		||||
			dev_dbg(sdev->dev, \
 | 
			
		||||
				"FW Poll Status: reg=%#x timedout\n", (val)); \
 | 
			
		||||
			break; \
 | 
			
		||||
		} \
 | 
			
		||||
		if (__sleep_us) \
 | 
			
		||||
			usleep_range((__sleep_us >> 2) + 1, __sleep_us); \
 | 
			
		||||
	} \
 | 
			
		||||
	(cond) ? 0 : -ETIMEDOUT; \
 | 
			
		||||
})
 | 
			
		||||
 | 
			
		||||
/* This is for registers bits with attribute RWC */
 | 
			
		||||
bool snd_sof_pci_update_bits(struct snd_sof_dev *sdev, u32 offset,
 | 
			
		||||
			     u32 mask, u32 value);
 | 
			
		||||
 | 
			
		||||
bool snd_sof_dsp_update_bits_unlocked(struct snd_sof_dev *sdev, u32 bar,
 | 
			
		||||
				      u32 offset, u32 mask, u32 value);
 | 
			
		||||
 | 
			
		||||
bool snd_sof_dsp_update_bits64_unlocked(struct snd_sof_dev *sdev, u32 bar,
 | 
			
		||||
					u32 offset, u64 mask, u64 value);
 | 
			
		||||
 | 
			
		||||
bool snd_sof_dsp_update_bits(struct snd_sof_dev *sdev, u32 bar, u32 offset,
 | 
			
		||||
			     u32 mask, u32 value);
 | 
			
		||||
 | 
			
		||||
bool snd_sof_dsp_update_bits64(struct snd_sof_dev *sdev, u32 bar,
 | 
			
		||||
			       u32 offset, u64 mask, u64 value);
 | 
			
		||||
 | 
			
		||||
void snd_sof_dsp_update_bits_forced(struct snd_sof_dev *sdev, u32 bar,
 | 
			
		||||
				    u32 offset, u32 mask, u32 value);
 | 
			
		||||
 | 
			
		||||
int snd_sof_dsp_register_poll(struct snd_sof_dev *sdev, u32 bar, u32 offset,
 | 
			
		||||
			      u32 mask, u32 target, u32 timeout_ms,
 | 
			
		||||
			      u32 interval_us);
 | 
			
		||||
 | 
			
		||||
void snd_sof_dsp_panic(struct snd_sof_dev *sdev, u32 offset);
 | 
			
		||||
#endif
 | 
			
		||||
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		Reference in a new issue