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- // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
- //
- // This file is provided under a dual BSD/GPLv2 license. When using or
- // redistributing this file, you may do so under either license.
- //
- // Copyright(c) 2018 Intel Corporation. All rights reserved.
- //
- // Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
- //
- #include <linux/pci.h>
- #include "ops.h"
- static
- bool snd_sof_pci_update_bits_unlocked(struct snd_sof_dev *sdev, u32 offset,
- u32 mask, u32 value)
- {
- struct pci_dev *pci = to_pci_dev(sdev->dev);
- unsigned int old, new;
- u32 ret = 0;
- pci_read_config_dword(pci, offset, &ret);
- old = ret;
- dev_dbg(sdev->dev, "Debug PCIR: %8.8x at %8.8x\n", old & mask, offset);
- new = (old & ~mask) | (value & mask);
- if (old == new)
- return false;
- pci_write_config_dword(pci, offset, new);
- dev_dbg(sdev->dev, "Debug PCIW: %8.8x at %8.8x\n", value,
- offset);
- return true;
- }
- bool snd_sof_pci_update_bits(struct snd_sof_dev *sdev, u32 offset,
- u32 mask, u32 value)
- {
- unsigned long flags;
- bool change;
- spin_lock_irqsave(&sdev->hw_lock, flags);
- change = snd_sof_pci_update_bits_unlocked(sdev, offset, mask, value);
- spin_unlock_irqrestore(&sdev->hw_lock, flags);
- return change;
- }
- EXPORT_SYMBOL(snd_sof_pci_update_bits);
- bool snd_sof_dsp_update_bits_unlocked(struct snd_sof_dev *sdev, u32 bar,
- u32 offset, u32 mask, u32 value)
- {
- unsigned int old, new;
- u32 ret;
- ret = snd_sof_dsp_read(sdev, bar, offset);
- old = ret;
- new = (old & ~mask) | (value & mask);
- if (old == new)
- return false;
- snd_sof_dsp_write(sdev, bar, offset, new);
- return true;
- }
- EXPORT_SYMBOL(snd_sof_dsp_update_bits_unlocked);
- bool snd_sof_dsp_update_bits64_unlocked(struct snd_sof_dev *sdev, u32 bar,
- u32 offset, u64 mask, u64 value)
- {
- u64 old, new;
- old = snd_sof_dsp_read64(sdev, bar, offset);
- new = (old & ~mask) | (value & mask);
- if (old == new)
- return false;
- snd_sof_dsp_write64(sdev, bar, offset, new);
- return true;
- }
- EXPORT_SYMBOL(snd_sof_dsp_update_bits64_unlocked);
- /* This is for registers bits with attribute RWC */
- bool snd_sof_dsp_update_bits(struct snd_sof_dev *sdev, u32 bar, u32 offset,
- u32 mask, u32 value)
- {
- unsigned long flags;
- bool change;
- spin_lock_irqsave(&sdev->hw_lock, flags);
- change = snd_sof_dsp_update_bits_unlocked(sdev, bar, offset, mask,
- value);
- spin_unlock_irqrestore(&sdev->hw_lock, flags);
- return change;
- }
- EXPORT_SYMBOL(snd_sof_dsp_update_bits);
- bool snd_sof_dsp_update_bits64(struct snd_sof_dev *sdev, u32 bar, u32 offset,
- u64 mask, u64 value)
- {
- unsigned long flags;
- bool change;
- spin_lock_irqsave(&sdev->hw_lock, flags);
- change = snd_sof_dsp_update_bits64_unlocked(sdev, bar, offset, mask,
- value);
- spin_unlock_irqrestore(&sdev->hw_lock, flags);
- return change;
- }
- EXPORT_SYMBOL(snd_sof_dsp_update_bits64);
- static
- void snd_sof_dsp_update_bits_forced_unlocked(struct snd_sof_dev *sdev, u32 bar,
- u32 offset, u32 mask, u32 value)
- {
- unsigned int old, new;
- u32 ret;
- ret = snd_sof_dsp_read(sdev, bar, offset);
- old = ret;
- new = (old & ~mask) | (value & mask);
- snd_sof_dsp_write(sdev, bar, offset, new);
- }
- /* This is for registers bits with attribute RWC */
- void snd_sof_dsp_update_bits_forced(struct snd_sof_dev *sdev, u32 bar,
- u32 offset, u32 mask, u32 value)
- {
- unsigned long flags;
- spin_lock_irqsave(&sdev->hw_lock, flags);
- snd_sof_dsp_update_bits_forced_unlocked(sdev, bar, offset, mask, value);
- spin_unlock_irqrestore(&sdev->hw_lock, flags);
- }
- EXPORT_SYMBOL(snd_sof_dsp_update_bits_forced);
- void snd_sof_dsp_panic(struct snd_sof_dev *sdev, u32 offset)
- {
- dev_err(sdev->dev, "error : DSP panic!\n");
- /*
- * check if DSP is not ready and did not set the dsp_oops_offset.
- * if the dsp_oops_offset is not set, set it from the panic message.
- * Also add a check to memory window setting with panic message.
- */
- if (!sdev->dsp_oops_offset)
- sdev->dsp_oops_offset = offset;
- else
- dev_dbg(sdev->dev, "panic: dsp_oops_offset %zu offset %d\n",
- sdev->dsp_oops_offset, offset);
- snd_sof_dsp_dbg_dump(sdev, SOF_DBG_REGS | SOF_DBG_MBOX);
- snd_sof_trace_notify_for_error(sdev);
- }
- EXPORT_SYMBOL(snd_sof_dsp_panic);
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