drivers/zorro/names.c

Source file repositories/reference/linux-study-clean/drivers/zorro/names.c

File Facts

System
Linux kernel
Corpus path
drivers/zorro/names.c
Extension
.c
Size
2392 bytes
Lines
100
Domain
Driver Families
Bucket
drivers/zorro
Inferred role
Driver Families: implementation source
Status
source 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

struct zorro_prod_info {
	__u16 prod;
	unsigned short seen;
	const char *name;
};

struct zorro_manuf_info {
	__u16 manuf;
	unsigned short nr;
	const char *name;
	struct zorro_prod_info *prods;
};

/*
 * This is ridiculous, but we want the strings in
 * the .init section so that they don't take up
 * real memory.. Parse the same file multiple times
 * to get all the info.
 */
#define MANUF(manuf, name)		static char __manufstr_##manuf[] __initdata = name;
#define ENDMANUF()
#define PRODUCT(manuf, prod, name)	static char __prodstr_##manuf##prod[] __initdata = name;
#include "devlist.h"


#define MANUF(manuf, name)		static struct zorro_prod_info __prods_##manuf[] __initdata = {
#define ENDMANUF()			};
#define PRODUCT(manuf, prod, name)	{ 0x##prod, 0, __prodstr_##manuf##prod },
#include "devlist.h"

static struct zorro_manuf_info __initdata zorro_manuf_list[] = {
#define MANUF(manuf, name)		{ 0x##manuf, ARRAY_SIZE(__prods_##manuf), __manufstr_##manuf, __prods_##manuf },
#define ENDMANUF()
#define PRODUCT(manuf, prod, name)
#include "devlist.h"
};

#define MANUFS ARRAY_SIZE(zorro_manuf_list)

void __init zorro_name_device(struct zorro_dev *dev)
{
	const struct zorro_manuf_info *manuf_p = zorro_manuf_list;
	int i = MANUFS;
	char *name = dev->name;

	do {
		if (manuf_p->manuf == ZORRO_MANUF(dev->id))
			goto match_manuf;
		manuf_p++;
	} while (--i);

	/* Couldn't find either the manufacturer nor the product */
	return;

	match_manuf: {
		struct zorro_prod_info *prod_p = manuf_p->prods;
		int i = manuf_p->nr;

		while (i > 0) {
			if (prod_p->prod ==
			    ((ZORRO_PROD(dev->id)<<8) | ZORRO_EPC(dev->id)))
				goto match_prod;
			prod_p++;
			i--;
		}

		/* Ok, found the manufacturer, but unknown product */
		sprintf(name, "Zorro device %08x (%s)", dev->id, manuf_p->name);
		return;

		/* Full match */
		match_prod: {
			char *n = name + sprintf(name, "%s %s", manuf_p->name, prod_p->name);
			int nr = prod_p->seen + 1;
			prod_p->seen = nr;
			if (nr > 1)
				sprintf(n, " (#%d)", nr);
		}
	}
}

Annotation

Implementation Notes