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kernel
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linux
ASoC: Intel: avs: Allow for dumping debug window snapshot
Add new read-only debugfs entry which dumps entire content of the SRAM
window 2 i.e.: the debug window.
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20221202152841.672536-17-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
authored by
Cezary Rojewski
and committed by
Mark Brown
85ac9c8c
870f6e5a
+28
-1
+26
sound/soc/intel/avs/debugfs.c
+26
sound/soc/intel/avs/debugfs.c
···
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.llseek = no_llseek,
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};
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static ssize_t debug_window_read(struct file *file, char __user *to, size_t count, loff_t *ppos)
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{
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struct avs_dev *adev = file->private_data;
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size_t size;
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char *buf;
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int ret;
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size = adev->hw_cfg.dsp_cores * AVS_WINDOW_CHUNK_SIZE;
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buf = kzalloc(size, GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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memcpy_fromio(buf, avs_sram_addr(adev, AVS_DEBUG_WINDOW), size);
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ret = simple_read_from_buffer(to, count, ppos, buf, size);
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kfree(buf);
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return ret;
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}
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static const struct file_operations debug_window_fops = {
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.open = simple_open,
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.read = debug_window_read,
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.llseek = no_llseek,
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};
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static ssize_t probe_points_read(struct file *file, char __user *to, size_t count, loff_t *ppos)
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{
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struct avs_dev *adev = file->private_data;
···
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debugfs_create_file("strace", 0444, adev->debugfs_root, adev, &strace_fops);
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debugfs_create_file("trace_control", 0644, adev->debugfs_root, adev, &trace_control_fops);
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debugfs_create_file("fw_regs", 0444, adev->debugfs_root, adev, &fw_regs_fops);
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debugfs_create_file("debug_window", 0444, adev->debugfs_root, adev, &debug_window_fops);
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debugfs_create_u32("trace_aging_period", 0644, adev->debugfs_root,
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&adev->aging_timer_period);
+2
-1
sound/soc/intel/avs/registers.h
+2
-1
sound/soc/intel/avs/registers.h
···
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#define AVS_FW_REG_STATUS(adev) (AVS_FW_REG_BASE(adev) + 0x0)
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#define AVS_FW_REG_ERROR_CODE(adev) (AVS_FW_REG_BASE(adev) + 0x4)
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-
#define AVS_FW_REGS_SIZE PAGE_SIZE
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#define AVS_WINDOW_CHUNK_SIZE PAGE_SIZE
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#define AVS_FW_REGS_SIZE AVS_WINDOW_CHUNK_SIZE
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#define AVS_FW_REGS_WINDOW 0
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/* DSP -> HOST communication window */
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#define AVS_UPLINK_WINDOW AVS_FW_REGS_WINDOW