constants.c

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/* 
 * ASCII values for a number of symbolic constants, printing functions,
 * etc.
 * Additions for SCSI 2 and Linux 2.2.x by D. Gilbert (990422)
 * Additions for SCSI 3+ (SPC-3 T10/1416-D Rev 07 3 May 2002)
 *   by D. Gilbert and aeb (20020609)
 * Additions for SPC-3 T10/1416-D Rev 21 22 Sept 2004, D. Gilbert 20041025
 * Update to SPC-4 T10/1713-D Rev 5a, 14 June 2006, D. Gilbert 20060702
 */

#include <linux/blkdev.h>
#include <linux/module.h>
#include <linux/kernel.h>

#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_dbg.h>



/* Commands with service actions that change the command name */
#define MAINTENANCE_IN 0xa3
#define MAINTENANCE_OUT 0xa4
#define SERVICE_ACTION_IN_12 0xab
#define SERVICE_ACTION_OUT_12 0xa9
#define SERVICE_ACTION_IN_16 0x9e
#define SERVICE_ACTION_OUT_16 0x9f
#define VARIABLE_LENGTH_CMD 0x7f



#ifdef CONFIG_SCSI_CONSTANTS
static const char * cdb_byte0_names[] = {
/* 00-03 */ "Test Unit Ready", "Rezero Unit/Rewind", NULL, "Request Sense",
/* 04-07 */ "Format Unit/Medium", "Read Block Limits", NULL,
	    "Reasssign Blocks",
/* 08-0d */ "Read(6)", NULL, "Write(6)", "Seek(6)", NULL, NULL,
/* 0e-12 */ NULL, "Read Reverse", "Write Filemarks", "Space", "Inquiry",  
/* 13-16 */ "Verify(6)", "Recover Buffered Data", "Mode Select(6)",
	    "Reserve(6)",
/* 17-1a */ "Release(6)", "Copy", "Erase", "Mode Sense(6)",
/* 1b-1d */ "Start/Stop Unit", "Receive Diagnostic", "Send Diagnostic", 
/* 1e-1f */ "Prevent/Allow Medium Removal", NULL,
/* 20-22 */  NULL, NULL, NULL,
/* 23-28 */ "Read Format Capacities", "Set Window",
	    "Read Capacity(10)", NULL, NULL, "Read(10)",
/* 29-2d */ "Read Generation", "Write(10)", "Seek(10)", "Erase(10)",
            "Read updated block",
/* 2e-31 */ "Write Verify(10)", "Verify(10)", "Search High", "Search Equal",
/* 32-34 */ "Search Low", "Set Limits", "Prefetch/Read Position", 
/* 35-37 */ "Synchronize Cache(10)", "Lock/Unlock Cache(10)",
	    "Read Defect Data(10)", 
/* 38-3c */ "Medium Scan", "Compare", "Copy Verify", "Write Buffer", 
            "Read Buffer", 
/* 3d-3f */ "Update Block", "Read Long(10)",  "Write Long(10)",
/* 40-41 */ "Change Definition", "Write Same(10)",
/* 42-48 */ "Read sub-channel", "Read TOC/PMA/ATIP", "Read density support",
            "Play audio(10)", "Get configuration", "Play audio msf",
            "Play audio track/index",
/* 49-4f */ "Play track relative(10)", "Get event status notification",
            "Pause/resume", "Log Select", "Log Sense", "Stop play/scan",
            NULL,
/* 50-55 */ "Xdwrite", "Xpwrite, Read disk info", "Xdread, Read track info",
            "Reserve track", "Send OPC info", "Mode Select(10)",
/* 56-5b */ "Reserve(10)", "Release(10)", "Repair track", "Read master cue",
            "Mode Sense(10)", "Close track/session",
/* 5c-5f */ "Read buffer capacity", "Send cue sheet", "Persistent reserve in",
            "Persistent reserve out",
/* 60-67 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* 68-6f */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* 70-77 */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* 78-7f */ NULL, NULL, NULL, NULL, NULL, NULL, NULL, "Variable length",
/* 80-84 */ "Xdwrite(16)", "Rebuild(16)", "Regenerate(16)", "Extended copy",
            "Receive copy results",
/* 85-89 */ "ATA command pass through(16)", "Access control in",
	    "Access control out", "Read(16)", "Memory Export Out(16)",
/* 8a-8f */ "Write(16)", NULL, "Read attributes", "Write attributes",
            "Write and verify(16)", "Verify(16)",
/* 90-94 */ "Pre-fetch(16)", "Synchronize cache(16)",
            "Lock/unlock cache(16)", "Write same(16)", NULL,
/* 95-99 */ NULL, NULL, NULL, NULL, NULL,
/* 9a-9f */ NULL, NULL, NULL, NULL, "Service action in(16)",
            "Service action out(16)",
/* a0-a5 */ "Report luns", "ATA command pass through(12)/Blank",
            "Security protocol in", "Maintenance in", "Maintenance out",
	    "Move medium/play audio(12)",
/* a6-a9 */ "Exchange medium", "Move medium attached", "Read(12)",
            "Play track relative(12)",
/* aa-ae */ "Write(12)", NULL, "Erase(12), Get Performance",
            "Read DVD structure", "Write and verify(12)",
/* af-b1 */ "Verify(12)", "Search data high(12)", "Search data equal(12)",
/* b2-b4 */ "Search data low(12)", "Set limits(12)",
            "Read element status attached",
/* b5-b6 */ "Security protocol out", "Send volume tag, set streaming",
/* b7-b9 */ "Read defect data(12)", "Read element status", "Read CD msf",
/* ba-bc */ "Redundancy group (in), Scan",
            "Redundancy group (out), Set cd-rom speed", "Spare (in), Play cd",
/* bd-bf */ "Spare (out), Mechanism status", "Volume set (in), Read cd",
            "Volume set (out), Send DVD structure",
};

struct value_name_pair {
	int value;
	const char * name;
};

static const struct value_name_pair maint_in_arr[] = {
	{0x5, "Report device identifier"},
	{0xa, "Report target port groups"},
	{0xb, "Report aliases"},
	{0xc, "Report supported operation codes"},
	{0xd, "Report supported task management functions"},
	{0xe, "Report priority"},
	{0xf, "Report timestamp"},
};
#define MAINT_IN_SZ ARRAY_SIZE(maint_in_arr)

static const struct value_name_pair maint_out_arr[] = {
	{0x6, "Set device identifier"},
	{0xa, "Set target port groups"},
	{0xb, "Change aliases"},
	{0xe, "Set priority"},
	{0xe, "Set timestamp"},
};
#define MAINT_OUT_SZ ARRAY_SIZE(maint_out_arr)

static const struct value_name_pair serv_in12_arr[] = {
	{0x1, "Read media serial number"},
};
#define SERV_IN12_SZ ARRAY_SIZE(serv_in12_arr)

static const struct value_name_pair serv_out12_arr[] = {
	{-1, "dummy entry"},
};
#define SERV_OUT12_SZ ARRAY_SIZE(serv_out12_arr)

static const struct value_name_pair serv_in16_arr[] = {
	{0x10, "Read capacity(16)"},
	{0x11, "Read long(16)"},
};
#define SERV_IN16_SZ ARRAY_SIZE(serv_in16_arr)

static const struct value_name_pair serv_out16_arr[] = {
	{0x11, "Write long(16)"},
	{0x1f, "Notify data transfer device(16)"},
};
#define SERV_OUT16_SZ ARRAY_SIZE(serv_out16_arr)

static const struct value_name_pair variable_length_arr[] = {
	{0x1, "Rebuild(32)"},
	{0x2, "Regenerate(32)"},
	{0x3, "Xdread(32)"},
	{0x4, "Xdwrite(32)"},
	{0x5, "Xdwrite extended(32)"},
	{0x6, "Xpwrite(32)"},
	{0x7, "Xdwriteread(32)"},
	{0x8, "Xdwrite extended(64)"},
	{0x9, "Read(32)"},
	{0xa, "Verify(32)"},
	{0xb, "Write(32)"},
	{0xc, "Write an verify(32)"},
	{0xd, "Write same(32)"},
	{0x8801, "Format OSD"},
	{0x8802, "Create (osd)"},
	{0x8803, "List (osd)"},
	{0x8805, "Read (osd)"},
	{0x8806, "Write (osd)"},
	{0x8807, "Append (osd)"},
	{0x8808, "Flush (osd)"},
	{0x880a, "Remove (osd)"},
	{0x880b, "Create partition (osd)"},
	{0x880c, "Remove partition (osd)"},
	{0x880e, "Get attributes (osd)"},
	{0x880f, "Set attributes (osd)"},
	{0x8812, "Create and write (osd)"},
	{0x8815, "Create collection (osd)"},
	{0x8816, "Remove collection (osd)"},
	{0x8817, "List collection (osd)"},
	{0x8818, "Set key (osd)"},
	{0x8819, "Set master key (osd)"},
	{0x881a, "Flush collection (osd)"},
	{0x881b, "Flush partition (osd)"},
	{0x881c, "Flush OSD"},
	{0x8f7e, "Perform SCSI command (osd)"},
	{0x8f7f, "Perform task management function (osd)"},
};
#define VARIABLE_LENGTH_SZ ARRAY_SIZE(variable_length_arr)

static const char * get_sa_name(const struct value_name_pair * arr,
			        int arr_sz, int service_action)
{
	int k;

	for (k = 0; k < arr_sz; ++k, ++arr) {
		if (service_action == arr->value)
			break;
	}
	return (k < arr_sz) ? arr->name : NULL;
}

/* attempt to guess cdb length if cdb_len==0 . No trailing linefeed. */
static void print_opcode_name(unsigned char * cdbp, int cdb_len)
{
	int sa, len, cdb0;
	const char * name;

	cdb0 = cdbp[0];
	switch(cdb0) {
	case VARIABLE_LENGTH_CMD:
		len = cdbp[7] + 8;
		if (len < 10) {
			printk("short variable length command, "
			       "len=%d ext_len=%d", len, cdb_len);
			break;
		}
		sa = (cdbp[8] << 8) + cdbp[9];
		name = get_sa_name(maint_in_arr, MAINT_IN_SZ, sa);
		if (name) {
			printk("%s", name);
			if ((cdb_len > 0) && (len != cdb_len))
				printk(", in_cdb_len=%d, ext_len=%d",
				       len, cdb_len);
		} else {
			printk("cdb[0]=0x%x, sa=0x%x", cdb0, sa);
			if ((cdb_len > 0) && (len != cdb_len))
				printk(", in_cdb_len=%d, ext_len=%d",
				       len, cdb_len);
		}
		break;
	case MAINTENANCE_IN:
		sa = cdbp[1] & 0x1f;
		name = get_sa_name(maint_in_arr, MAINT_IN_SZ, sa);
		if (name)
			printk("%s", name);
		else
			printk("cdb[0]=0x%x, sa=0x%x", cdb0, sa);
		break;
	case MAINTENANCE_OUT:
		sa = cdbp[1] & 0x1f;
		name = get_sa_name(maint_out_arr, MAINT_OUT_SZ, sa);
		if (name)
			printk("%s", name);
		else
			printk("cdb[0]=0x%x, sa=0x%x", cdb0, sa);
		break;
	case SERVICE_ACTION_IN_12:
		sa = cdbp[1] & 0x1f;
		name = get_sa_name(serv_in12_arr, SERV_IN12_SZ, sa);
		if (name)
			printk("%s", name);
		else
			printk("cdb[0]=0x%x, sa=0x%x", cdb0, sa);
		break;
	case SERVICE_ACTION_OUT_12:
		sa = cdbp[1] & 0x1f;
		name = get_sa_name(serv_out12_arr, SERV_OUT12_SZ, sa);
		if (name)
			printk("%s", name);
		else
			printk("cdb[0]=0x%x, sa=0x%x", cdb0, sa);
		break;
	case SERVICE_ACTION_IN_16:
		sa = cdbp[1] & 0x1f;
		name = get_sa_name(serv_in16_arr, SERV_IN16_SZ, sa);
		if (name)
			printk("%s", name);
		else
			printk("cdb[0]=0x%x, sa=0x%x", cdb0, sa);
		break;
	case SERVICE_ACTION_OUT_16:
		sa = cdbp[1] & 0x1f;
		name = get_sa_name(serv_out16_arr, SERV_OUT16_SZ, sa);
		if (name)
			printk("%s", name);
		else
			printk("cdb[0]=0x%x, sa=0x%x", cdb0, sa);
		break;
	default:
		if (cdb0 < 0xc0) {
			name = cdb_byte0_names[cdb0];
			if (name)
				printk("%s", name);
			else
				printk("cdb[0]=0x%x (reserved)", cdb0);
		} else
			printk("cdb[0]=0x%x (vendor)", cdb0);
		break;
	}
}

#else /* ifndef CONFIG_SCSI_CONSTANTS */

static void print_opcode_name(unsigned char * cdbp, int cdb_len)
{
	int sa, len, cdb0;

	cdb0 = cdbp[0];
	switch(cdb0) {
	case VARIABLE_LENGTH_CMD:
		len = cdbp[7] + 8;
		if (len < 10) {
			printk("short opcode=0x%x command, len=%d "
			       "ext_len=%d", cdb0, len, cdb_len);
			break;
		}
		sa = (cdbp[8] << 8) + cdbp[9];
		printk("cdb[0]=0x%x, sa=0x%x", cdb0, sa);
		if (len != cdb_len)
			printk(", in_cdb_len=%d, ext_len=%d", len, cdb_len);
		break;
	case MAINTENANCE_IN:
	case MAINTENANCE_OUT:
	case SERVICE_ACTION_IN_12:
	case SERVICE_ACTION_OUT_12:
	case SERVICE_ACTION_IN_16:
	case SERVICE_ACTION_OUT_16:
		sa = cdbp[1] & 0x1f;
		printk("cdb[0]=0x%x, sa=0x%x", cdb0, sa);
		break;
	default:
		if (cdb0 < 0xc0)
			printk("cdb[0]=0x%x", cdb0);
		else
			printk("cdb[0]=0x%x (vendor)", cdb0);
		break;
	}
}
#endif  

void __scsi_print_command(unsigned char *cdb)
{
	int k, len;

	print_opcode_name(cdb, 0);
	if (VARIABLE_LENGTH_CMD == cdb[0])
		len = cdb[7] + 8;
	else
		len = COMMAND_SIZE(cdb[0]);
	/* print out all bytes in cdb */
	for (k = 0; k < len; ++k) 
		printk(" %02x", cdb[k]);
	printk("\n");
}
EXPORT_SYMBOL(__scsi_print_command);

void scsi_print_command(struct scsi_cmnd *cmd)
{
	int k;

	scmd_printk(KERN_INFO, cmd, "CDB: ");
	print_opcode_name(cmd->cmnd, cmd->cmd_len);