drivers/net/wireless/st/cw1200/debug.c

File Facts

System

Linux kernel

Corpus path

drivers/net/wireless/st/cw1200/debug.c

Extension

.c

Size

11071 bytes

Lines

389

Domain

Driver Families

Bucket

drivers/net

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.

• 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.
• Defines an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• Touches user memory; correctness depends on fault-safe copying and privilege boundary handling.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/module.h
• linux/debugfs.h
• linux/seq_file.h
• cw1200.h
• debug.h
• fwio.h

Detected Declarations

• function cw1200_queue_status_show
• function cw1200_debug_print_map
• function cw1200_status_show
• function cw1200_counters_show
• function cw1200_wsm_dumps
• function cw1200_debug_init
• function cw1200_debug_release

Annotated Snippet

static const struct file_operations fops_wsm_dumps = {
	.open = simple_open,
	.write = cw1200_wsm_dumps,
	.llseek = default_llseek,
};

int cw1200_debug_init(struct cw1200_common *priv)
{
	int ret = -ENOMEM;
	struct cw1200_debug_priv *d = kzalloc_obj(struct cw1200_debug_priv);
	priv->debug = d;
	if (!d)
		return ret;

	d->debugfs_phy = debugfs_create_dir("cw1200",
					    priv->hw->wiphy->debugfsdir);
	debugfs_create_file("status", 0400, d->debugfs_phy, priv,
			    &cw1200_status_fops);
	debugfs_create_file("counters", 0400, d->debugfs_phy, priv,
			    &cw1200_counters_fops);
	debugfs_create_file("wsm_dumps", 0200, d->debugfs_phy, priv,
			    &fops_wsm_dumps);

	return 0;
}

void cw1200_debug_release(struct cw1200_common *priv)
{
	struct cw1200_debug_priv *d = priv->debug;
	if (d) {
		debugfs_remove_recursive(d->debugfs_phy);
		priv->debug = NULL;
		kfree(d);
	}
}

Annotation

• Immediate include surface: `linux/module.h`, `linux/debugfs.h`, `linux/seq_file.h`, `cw1200.h`, `debug.h`, `fwio.h`.
• Detected declarations: `function cw1200_queue_status_show`, `function cw1200_debug_print_map`, `function cw1200_status_show`, `function cw1200_counters_show`, `function cw1200_wsm_dumps`, `function cw1200_debug_init`, `function cw1200_debug_release`.
• Atlas domain: Driver Families / drivers/net.
• Implementation status: pattern implementation candidate.
• This snippet crosses the user/kernel memory boundary; validate fault handling and access checks before translating the pattern.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.