drivers/scsi/nsp32_debug.c

Source file repositories/reference/linux-study-clean/drivers/scsi/nsp32_debug.c

File Facts

System
Linux kernel
Corpus path
drivers/scsi/nsp32_debug.c
Extension
.c
Size
7500 bytes
Lines
264
Domain
Driver Families
Bucket
drivers/scsi
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

static const char unknown[] = "UNKNOWN";

static const char * group_0_commands[] = {
/* 00-03 */ "Test Unit Ready", "Rezero Unit", unknown, "Request Sense",
/* 04-07 */ "Format Unit", "Read Block Limits", unknown, "Reassign Blocks",
/* 08-0d */ "Read (6)", unknown, "Write (6)", "Seek (6)", unknown, unknown,
/* 0e-12 */ unknown, "Read Reverse", "Write Filemarks", "Space", "Inquiry",  
/* 13-16 */ unknown, "Recover Buffered Data", "Mode Select", "Reserve",
/* 17-1b */ "Release", "Copy", "Erase", "Mode Sense", "Start/Stop Unit",
/* 1c-1d */ "Receive Diagnostic", "Send Diagnostic", 
/* 1e-1f */ "Prevent/Allow Medium Removal", unknown,
};


static const char *group_1_commands[] = {
/* 20-22 */  unknown, unknown, unknown,
/* 23-28 */ unknown, unknown, "Read Capacity", unknown, unknown, "Read (10)",
/* 29-2d */ unknown, "Write (10)", "Seek (10)", unknown, unknown,
/* 2e-31 */ "Write Verify","Verify", "Search High", "Search Equal",
/* 32-34 */ "Search Low", "Set Limits", "Prefetch or Read Position", 
/* 35-37 */ "Synchronize Cache","Lock/Unlock Cache", "Read Defect Data",
/* 38-3c */ "Medium Scan", "Compare","Copy Verify", "Write Buffer", "Read Buffer",
/* 3d-3f */ "Update Block", "Read Long",  "Write Long",
};


static const char *group_2_commands[] = {
/* 40-41 */ "Change Definition", "Write Same", 
/* 42-48 */ "Read Sub-Ch(cd)", "Read TOC", "Read Header(cd)", "Play Audio(cd)", unknown, "Play Audio MSF(cd)", "Play Audio Track/Index(cd)", 
/* 49-4f */ "Play Track Relative(10)(cd)", unknown, "Pause/Resume(cd)", "Log Select", "Log Sense", unknown, unknown,
/* 50-55 */ unknown, unknown, unknown, unknown, unknown, "Mode Select (10)",
/* 56-5b */ unknown, unknown, unknown, unknown, "Mode Sense (10)", unknown,
/* 5c-5f */ unknown, unknown, unknown,
};

#define group(opcode) (((opcode) >> 5) & 7)

#define RESERVED_GROUP  0
#define VENDOR_GROUP    1
#define NOTEXT_GROUP    2

static const char **commands[] = {
    group_0_commands, group_1_commands, group_2_commands, 
    (const char **) RESERVED_GROUP, (const char **) RESERVED_GROUP, 
    (const char **) NOTEXT_GROUP, (const char **) VENDOR_GROUP, 
    (const char **) VENDOR_GROUP
};

static const char reserved[] = "RESERVED";
static const char vendor[] = "VENDOR SPECIFIC";

static void print_opcodek(unsigned char opcode)
{
	const char **table = commands[ group(opcode) ];

	switch ((unsigned long) table) {
	case RESERVED_GROUP:
		printk("%s[%02x] ", reserved, opcode); 
		break;
	case NOTEXT_GROUP:
		printk("%s(notext)[%02x] ", unknown, opcode); 
		break;
	case VENDOR_GROUP:
		printk("%s[%02x] ", vendor, opcode); 
		break;
	default:
		if (table[opcode & 0x1f] != unknown)
			printk("%s[%02x] ", table[opcode & 0x1f], opcode);
		else
			printk("%s[%02x] ", unknown, opcode);
		break;
	}
}

static void print_commandk (unsigned char *command)
{
	int i,s;
//	printk(KERN_DEBUG);
	print_opcodek(command[0]);
	/*printk(KERN_DEBUG "%s ", __func__);*/
	if ((command[0] >> 5) == 6 ||
	    (command[0] >> 5) == 7 ) {
		s = 12; /* vender specific */
	} else {
		s = COMMAND_SIZE(command[0]);
	}

	for ( i = 1; i < s; ++i) {
		printk("%02x ", command[i]);
	}

Annotation

Implementation Notes