drivers/crypto/intel/qat/qat_common/adf_cnv_dbgfs.c

Source file repositories/reference/linux-study-clean/drivers/crypto/intel/qat/qat_common/adf_cnv_dbgfs.c

File Facts

System
Linux kernel
Corpus path
drivers/crypto/intel/qat/qat_common/adf_cnv_dbgfs.c
Extension
.c
Size
7680 bytes
Lines
300
Domain
Driver Families
Bucket
drivers/crypto
Inferred role
Driver Families: operation-table or driver-model contract
Status
pattern implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

static const struct file_operations qat_cnv_fops = {
	.owner = THIS_MODULE,
	.open = qat_cnv_errors_file_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = qat_cnv_errors_file_release,
};

static ssize_t no_comp_file_read(struct file *f, char __user *buf, size_t count,
				 loff_t *pos)
{
	char *file_msg = "No engine configured for comp\n";

	return simple_read_from_buffer(buf, count, pos, file_msg,
				       strlen(file_msg));
}

static const struct file_operations qat_cnv_no_comp_fops = {
	.owner = THIS_MODULE,
	.read = no_comp_file_read,
};

void adf_cnv_dbgfs_add(struct adf_accel_dev *accel_dev)
{
	const struct file_operations *fops;
	void *data;

	if (adf_hw_dev_has_compression(accel_dev)) {
		fops = &qat_cnv_fops;
		data = accel_dev;
	} else {
		fops = &qat_cnv_no_comp_fops;
		data = NULL;
	}

	accel_dev->cnv_dbgfile = debugfs_create_file(CNV_DEBUGFS_FILENAME, 0400,
						     accel_dev->debugfs_dir,
						     data, fops);
}

void adf_cnv_dbgfs_rm(struct adf_accel_dev *accel_dev)
{
	debugfs_remove(accel_dev->cnv_dbgfile);
	accel_dev->cnv_dbgfile = NULL;
}

Annotation

Implementation Notes