diff options
| author | Cezary Rojewski <cezary.rojewski@intel.com> | 2022-12-02 18:28:41 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-12-05 17:05:33 +0300 |
| commit | 85ac9c8c8eed76e8a320a9e017c6d36e2a52745b (patch) | |
| tree | 01536d38f58562ec2ca39e00ec844f4c760bb284 /sound | |
| parent | 870f6e5abba95ac78e750b61cf8f3f15be96796f (diff) | |
| download | linux-85ac9c8c8eed76e8a320a9e017c6d36e2a52745b.tar.xz | |
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>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/intel/avs/debugfs.c | 26 | ||||
| -rw-r--r-- | sound/soc/intel/avs/registers.h | 3 |
2 files changed, 28 insertions, 1 deletions
diff --git a/sound/soc/intel/avs/debugfs.c b/sound/soc/intel/avs/debugfs.c index e9042d4328c4..bdd388ec01ea 100644 --- a/sound/soc/intel/avs/debugfs.c +++ b/sound/soc/intel/avs/debugfs.c @@ -71,6 +71,31 @@ static const struct file_operations fw_regs_fops = { .llseek = no_llseek, }; +static ssize_t debug_window_read(struct file *file, char __user *to, size_t count, loff_t *ppos) +{ + struct avs_dev *adev = file->private_data; + size_t size; + char *buf; + int ret; + + size = adev->hw_cfg.dsp_cores * AVS_WINDOW_CHUNK_SIZE; + buf = kzalloc(size, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + memcpy_fromio(buf, avs_sram_addr(adev, AVS_DEBUG_WINDOW), size); + + ret = simple_read_from_buffer(to, count, ppos, buf, size); + kfree(buf); + return ret; +} + +static const struct file_operations debug_window_fops = { + .open = simple_open, + .read = debug_window_read, + .llseek = no_llseek, +}; + static ssize_t probe_points_read(struct file *file, char __user *to, size_t count, loff_t *ppos) { struct avs_dev *adev = file->private_data; @@ -393,6 +418,7 @@ void avs_debugfs_init(struct avs_dev *adev) debugfs_create_file("strace", 0444, adev->debugfs_root, adev, &strace_fops); debugfs_create_file("trace_control", 0644, adev->debugfs_root, adev, &trace_control_fops); debugfs_create_file("fw_regs", 0444, adev->debugfs_root, adev, &fw_regs_fops); + debugfs_create_file("debug_window", 0444, adev->debugfs_root, adev, &debug_window_fops); debugfs_create_u32("trace_aging_period", 0644, adev->debugfs_root, &adev->aging_timer_period); diff --git a/sound/soc/intel/avs/registers.h b/sound/soc/intel/avs/registers.h index 95be86148cf3..2b464e466ed5 100644 --- a/sound/soc/intel/avs/registers.h +++ b/sound/soc/intel/avs/registers.h @@ -59,7 +59,8 @@ #define AVS_FW_REG_STATUS(adev) (AVS_FW_REG_BASE(adev) + 0x0) #define AVS_FW_REG_ERROR_CODE(adev) (AVS_FW_REG_BASE(adev) + 0x4) -#define AVS_FW_REGS_SIZE PAGE_SIZE +#define AVS_WINDOW_CHUNK_SIZE PAGE_SIZE +#define AVS_FW_REGS_SIZE AVS_WINDOW_CHUNK_SIZE #define AVS_FW_REGS_WINDOW 0 /* DSP -> HOST communication window */ #define AVS_UPLINK_WINDOW AVS_FW_REGS_WINDOW |