[PATCH] consolidate devlist handling in a single file

[Christoph Hellwig <hch@lst.de>]

Currently it's spread all over the scsi midlayer but having this
nicely separate out to a file of it's own without exposing the
data structures sounds like a good idea.


--- 1.41/drivers/scsi/Makefile	Sat Apr 26 17:19:41 2003
+++ edited/drivers/scsi/Makefile	Thu May  8 18:31:36 2003
@@ -124,7 +124,8 @@
 
 scsi_mod-y			+= scsi.o hosts.o scsi_ioctl.o constants.o \
 				   scsicam.o scsi_error.o scsi_lib.o \
-				   scsi_scan.o scsi_syms.o scsi_sysfs.o
+				   scsi_scan.o scsi_syms.o scsi_sysfs.o \
+				   scsi_devinfo.o
 scsi_mod-$(CONFIG_PROC_FS)	+= scsi_proc.o
 scsi_mod-$(CONFIG_X86_PC9800)	+= scsi_pc98.o
 			
--- 1.111/drivers/scsi/scsi.c	Wed Apr 30 18:09:21 2003
+++ edited/drivers/scsi/scsi.c	Thu May  8 18:31:08 2003
@@ -114,11 +114,6 @@
 	"Enclosure        ",
 };
 
-static const char * const spaces = "                "; /* 16 of them */
-
-static unsigned scsi_default_dev_flags;
-LIST_HEAD(scsi_dev_info_list);
-
 MODULE_PARM(scsi_logging_level, "i");
 MODULE_PARM_DESC(scsi_logging_level, "SCSI logging level; should be zero or nonzero");
 
@@ -936,250 +931,6 @@
 	return depth;
 }
 
-
-/*
- * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into
- * devinfo vendor and model strings.
- */
-static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
-				char *from, int compatible)
-{
-	size_t from_length;
-
-	from_length = strlen(from);
-	strncpy(to, from, min(to_length, from_length));
-	if (from_length < to_length) {
-		if (compatible) {
-			/*
-			 * NUL terminate the string if it is short.
-			 */
-			to[from_length] = '\0';
-		} else {
-			/* 
-			 * space pad the string if it is short. 
-			 */
-			strncpy(&to[from_length], spaces,
-				to_length - from_length);
-		}
-	}
-	if (from_length > to_length)
-		 printk(KERN_WARNING "%s: %s string '%s' is too long\n",
-			__FUNCTION__, name, from);
-}
-
-/**
- * scsi_dev_info_list_add: add one dev_info list entry.
- * @vendor:	vendor string
- * @model:	model (product) string
- * @strflags:	integer string
- * @flag:	if strflags NULL, use this flag value
- *
- * Description:
- * 	Create and add one dev_info entry for @vendor, @model, @strflags or
- * 	@flag. If @compatible, add to the tail of the list, do not space
- * 	pad, and set devinfo->compatible. The scsi_static_device_list entries
- * 	are added with @compatible 1 and @clfags NULL.
- *
- * Returns: 0 OK, -error on failure.
- **/
-static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
-			    char *strflags, int flags)
-{
-	struct scsi_dev_info_list *devinfo;
-
-	devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL);
-	if (!devinfo) {
-		printk(KERN_ERR "%s: no memory\n", __FUNCTION__);
-		return -ENOMEM;
-	}
-
-	scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor),
-			    vendor, compatible);
-	scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model),
-			    model, compatible);
-
-	if (strflags)
-		devinfo->flags = simple_strtoul(strflags, NULL, 0);
-	else
-		devinfo->flags = flags;
-
-	devinfo->compatible = compatible;
-
-	if (compatible)
-		list_add_tail(&devinfo->dev_info_list, &scsi_dev_info_list);
-	else
-		list_add(&devinfo->dev_info_list, &scsi_dev_info_list);
-
-	return 0;
-}
-
-/**
- * scsi_dev_info_list_add_str: parse dev_list and add to the
- * scsi_dev_info_list.
- * @dev_list:	string of device flags to add
- *
- * Description:
- * 	Parse dev_list, and add entries to the scsi_dev_info_list.
- * 	dev_list is of the form "vendor:product:flag,vendor:product:flag".
- * 	dev_list is modified via strsep. Can be called for command line
- * 	addition, for proc or mabye a sysfs interface.
- *
- * Returns: 0 if OK, -error on failure.
- **/
-int scsi_dev_info_list_add_str (char *dev_list)
-{
-	char *vendor, *model, *strflags, *next;
-	char *next_check;
-	int res = 0;
-
-	next = dev_list;
-	if (next && next[0] == '"') {
-		/*
-		 * Ignore both the leading and trailing quote.
-		 */
-		next++;
-		next_check = ",\"";
-	} else {
-		next_check = ",";
-	}
-
-	/*
-	 * For the leading and trailing '"' case, the for loop comes
-	 * through the last time with vendor[0] == '\0'.
-	 */
-	for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0')
-	     && (res == 0); vendor = strsep(&next, ":")) {
-		strflags = NULL;
-		model = strsep(&next, ":");
-		if (model)
-			strflags = strsep(&next, next_check);
-		if (!model || !strflags) {
-			printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
-			       " '%s'\n", __FUNCTION__, vendor, model,
-			       strflags);
-			res = -EINVAL;
-		} else
-			res = scsi_dev_info_list_add(0 /* compatible */, vendor,
-						     model, strflags, 0);
-	}
-	return res;
-}
-
-/**
- * scsi_dev_info_list_delete: called from scsi.c:exit_scsi to remove
- * 	the scsi_dev_info_list.
- **/
-static void scsi_dev_info_list_delete (void)
-{
-	struct list_head *lh, *lh_next;
-	struct scsi_dev_info_list *devinfo;
-
-	list_for_each_safe(lh, lh_next, &scsi_dev_info_list) {
-		devinfo = list_entry(lh, struct scsi_dev_info_list,
-				     dev_info_list);
-		kfree(devinfo);
-	}
-}
-
-/**
- * scsi_dev_list_init: set up the dynamic device list.
- * @dev_list:	string of device flags to add
- *
- * Description:
- * 	Add command line @dev_list entries, then add
- * 	scsi_static_device_list entries to the scsi device info list.
- **/
-static int scsi_dev_info_list_init (char *dev_list)
-{
-	int error, i;
-
-	error = scsi_dev_info_list_add_str(dev_list);
-	if (error)
-		return error;
-
-	for (i = 0; scsi_static_device_list[i].vendor != NULL; i++) {
-		error = scsi_dev_info_list_add(1 /* compatibile */,
-				scsi_static_device_list[i].vendor,
-				scsi_static_device_list[i].model,
-				NULL,
-				scsi_static_device_list[i].flags);
-		if (error)
-			break;
-	}
-
-	if (error)
-		scsi_dev_info_list_delete();
-	return error;
-}
-
-/**
- * get_device_flags - get device specific flags from the dynamic device
- * list. Called during scan time.
- * @vendor:	vendor name
- * @model:	model name
- *
- * Description:
- *     Search the scsi_dev_info_list for an entry matching @vendor and
- *     @model, if found, return the matching flags value, else return
- *     scsi_default_dev_flags.
- **/
-int scsi_get_device_flags(unsigned char *vendor, unsigned char *model)
-{
-	struct scsi_dev_info_list *devinfo;
-
-	list_for_each_entry(devinfo, &scsi_dev_info_list, dev_info_list) {
-		if (devinfo->compatible) {
-			/*
-			 * Behave like the older version of get_device_flags.
-			 */
-			size_t max;
-			/*
-			 * XXX why skip leading spaces? If an odd INQUIRY
-			 * value, that should have been part of the
-			 * scsi_static_device_list[] entry, such as "  FOO"
-			 * rather than "FOO". Since this code is already
-			 * here, and we don't know what device it is
-			 * trying to work with, leave it as-is.
-			 */
-			max = 8;	/* max length of vendor */
-			while ((max > 0) && *vendor == ' ') {
-				max--;
-				vendor++;
-			}
-			/*
-			 * XXX removing the following strlen() would be
-			 * good, using it means that for a an entry not in
-			 * the list, we scan every byte of every vendor
-			 * listed in scsi_static_device_list[], and never match
-			 * a single one (and still have to compare at
-			 * least the first byte of each vendor).
-			 */
-			if (memcmp(devinfo->vendor, vendor,
-				    min(max, strlen(devinfo->vendor))))
-				continue;
-			/*
-			 * Skip spaces again.
-			 */
-			max = 16;	/* max length of model */
-			while ((max > 0) && *model == ' ') {
-				max--;
-				model++;
-			}
-			if (memcmp(devinfo->model, model,
-				   min(max, strlen(devinfo->model))))
-				continue;
-			return devinfo->flags;
-		} else {
-			if (!memcmp(devinfo->vendor, vendor,
-				     sizeof(devinfo->vendor)) &&
-			     !memcmp(devinfo->model, model,
-				      sizeof(devinfo->model)))
-				return devinfo->flags;
-		}
-	}
-	return scsi_default_dev_flags;
-}
-
 int scsi_attach_device(struct scsi_device *sdev)
 {
 	struct Scsi_Device_Template *sdt;
@@ -1344,43 +1095,9 @@
 	return 0;
 }
 
-static char *scsi_dev_flags;
-MODULE_PARM(scsi_dev_flags, "s");
-MODULE_PARM_DESC(scsi_dev_flags,
-	 "Given scsi_dev_flags=vendor:model:flags, add a black/white list"
-	 " entry for vendor and model with an integer value of flags"
-	 " to the scsi device info list");
-MODULE_PARM(scsi_default_dev_flags, "i");
-MODULE_PARM_DESC(scsi_default_dev_flags,
-		 "scsi default device flag integer value");
 MODULE_DESCRIPTION("SCSI core");
 MODULE_LICENSE("GPL");
 
-#ifndef MODULE
-static int __init setup_scsi_dev_flags(char *str)
-{
-	scsi_dev_flags = str;
-	return 1;
-}
-__setup("scsi_dev_flags=", setup_scsi_dev_flags);
-
-static int __init setup_scsi_default_dev_flags(char *str)
-{
-	unsigned int tmp;
-	if (get_option(&str, &tmp) == 1) {
-		scsi_default_dev_flags = tmp;
-		printk(KERN_WARNING "%s %d\n", __FUNCTION__,
-		       scsi_default_dev_flags);
-		return 1;
-	} else {
-		printk(KERN_WARNING "%s: usage scsi_default_dev_flags=intr\n",
-		       __FUNCTION__);
-		return 0;
-	}
-}
-__setup("scsi_default_dev_flags=", setup_scsi_default_dev_flags);
-#endif
-
 static int __init init_scsi(void)
 {
 	int error, i;
@@ -1391,7 +1108,7 @@
 	error = scsi_init_procfs();
 	if (error)
 		goto cleanup_queue;
-	error = scsi_dev_info_list_init(scsi_dev_flags);
+	error = scsi_init_devinfo();
 	if (error)
 		goto cleanup_procfs;
 	error = scsi_sysfs_register();
@@ -1408,7 +1125,7 @@
 	return 0;
 
 cleanup_devlist:
-	scsi_dev_info_list_delete();
+	scsi_exit_devinfo();
 cleanup_procfs:
 	scsi_exit_procfs();
 cleanup_queue:
@@ -1421,7 +1138,7 @@
 static void __exit exit_scsi(void)
 {
 	scsi_sysfs_unregister();
-	scsi_dev_info_list_delete();
+	scsi_exit_devinfo();
 	devfs_remove("scsi");
 	scsi_exit_procfs();
 	scsi_exit_queue();
--- 1.3/drivers/scsi/scsi_priv.h	Wed Apr 30 18:09:21 2003
+++ edited/drivers/scsi/scsi_priv.h	Thu May  8 19:14:53 2003
@@ -41,6 +41,8 @@
 #define SCSI_SENSE_VALID(scmd) \
 	(((scmd)->sense_buffer[0] & 0x70) == 0x70)
 
+struct Scsi_Device_Template;
+
 
 /*
  * scsi_target: representation of a scsi target, for now, this is only
@@ -69,12 +71,16 @@
 extern int scsi_attach_device(struct scsi_device *sdev);
 extern void scsi_detach_device(struct scsi_device *sdev);
 extern void scsi_rescan_device(struct scsi_device *sdev);
-extern int scsi_get_device_flags(unsigned char *vendor, unsigned char *model);
 extern int scsi_insert_special_req(struct scsi_request *sreq, int);
 extern void scsi_init_cmd_from_req(struct scsi_cmnd *cmd,
 		struct scsi_request *sreq);
 extern void __scsi_release_request(struct scsi_request *sreq);
 
+/* scsi_devinfo.c */
+extern int scsi_get_device_flags(unsigned char *vendor, unsigned char *model);
+extern int scsi_init_devinfo(void);
+extern void scsi_exit_devinfo(void);
+
 /* scsi_error.c */
 extern void scsi_times_out(struct scsi_cmnd *cmd);
 extern void scsi_error_handler(void *host);
@@ -119,31 +125,5 @@
 extern void scsi_sysfs_remove_host(struct Scsi_Host *);
 extern int scsi_sysfs_register(void);
 extern void scsi_sysfs_unregister(void);
-
-/*
- * dev_info: for the black/white list in the old scsi_static_device_list
- */
-struct dev_info {
-	char *vendor;
-	char *model;
-	char *revision;	/* revision known to be bad, unused */
-	unsigned flags;
-};
-
-extern struct dev_info scsi_static_device_list[];
-
-/*
- * scsi_dev_info_list: structure to hold black/white listed devices.
- */
-struct scsi_dev_info_list {
-	struct list_head dev_info_list;
-	char vendor[8];
-	char model[16];
-	unsigned flags;
-	unsigned compatible; /* for use with scsi_static_device_list entries */
-};
-
-extern struct list_head scsi_dev_info_list;
-extern int scsi_dev_info_list_add_str(char *);
 
 #endif /* _SCSI_PRIV_H */
--- 1.21/drivers/scsi/scsi_proc.c	Sat Apr 26 16:46:26 2003
+++ edited/drivers/scsi/scsi_proc.c	Thu May  8 18:24:15 2003
@@ -200,77 +200,6 @@
 	return;
 }
 
-/* 
- * proc_scsi_dev_info_read: dump the scsi_dev_info_list via
- * /proc/scsi/device_info
- */
-static int proc_scsi_dev_info_read(char *buffer, char **start, off_t offset,
-				   int length)
-{
-	struct scsi_dev_info_list *devinfo;
-	int size, len = 0;
-	off_t begin = 0;
-	off_t pos = 0;
-
-	list_for_each_entry(devinfo, &scsi_dev_info_list, dev_info_list) {
-		size = sprintf(buffer + len, "'%.8s' '%.16s' 0x%x\n",
-			       devinfo->vendor, devinfo->model, devinfo->flags);
-		len += size;
-		pos = begin + len;
-		if (pos < offset) {
-			len = 0;
-			begin = pos;
-		}
-		if (pos > offset + length)
-			goto stop_output;
-	}
-
-stop_output:
-	*start = buffer + (offset - begin);	/* Start of wanted data */
-	len -= (offset - begin);	/* Start slop */
-	if (len > length)
-		len = length;	/* Ending slop */
-	return (len);
-}
-
-/* 
- * proc_scsi_dev_info_write: allow additions to the scsi_dev_info_list via
- * /proc.
- *
- * Use: echo "vendor:model:flag" > /proc/scsi/device_info
- *
- * To add a black/white list entry for vendor and model with an integer
- * value of flag to the scsi device info list.
- */
-static int proc_scsi_dev_info_write (struct file * file, const char * buf,
-                              unsigned long length, void *data)
-{
-	char *buffer;
-	int err = length;
-
-	if (!buf || length>PAGE_SIZE)
-		return -EINVAL;
-	if (!(buffer = (char *) __get_free_page(GFP_KERNEL)))
-		return -ENOMEM;
-	if (copy_from_user(buffer, buf, length)) {
-		err =-EFAULT;
-		goto out;
-	}
-
-	if (length < PAGE_SIZE)
-		buffer[length] = '\0';
-	else if (buffer[PAGE_SIZE-1]) {
-		err = -EINVAL;
-		goto out;
-	}
-
-	scsi_dev_info_list_add_str(buffer);
-
-out:
-	free_page((unsigned long)buffer);
-	return err;
-}
-
 static int scsi_proc_info(char *buffer, char **start, off_t offset, int length)
 {
 	struct Scsi_Host *shost;
@@ -359,7 +288,6 @@
 	return error;
 }
 
-
 static int proc_scsi_gen_write(struct file * file, const char * buf,
                               unsigned long length, void *data)
 {
@@ -517,15 +445,8 @@
 		goto err2;
 	pde->write_proc = proc_scsi_gen_write;
 
-	pde = create_proc_info_entry("scsi/device_info", 0, 0,
-					  proc_scsi_dev_info_read);
-	if (!pde)
-		goto err3;
-	pde->write_proc = proc_scsi_dev_info_write;
 	return 0;
 
-err3:
-	remove_proc_entry("scsi/scsi", 0);
 err2:
 	remove_proc_entry("scsi", 0);
 err1:
@@ -534,7 +455,6 @@
 
 void scsi_exit_procfs(void)
 {
-	remove_proc_entry("scsi/device_info", 0);
 	remove_proc_entry("scsi/scsi", 0);
 	remove_proc_entry("scsi", 0);
 }
--- 1.84/drivers/scsi/scsi_scan.c	Wed May  7 10:16:03 2003
+++ edited/drivers/scsi/scsi_scan.c	Thu May  8 18:24:15 2003
@@ -35,171 +35,7 @@
 
 #include "scsi_priv.h"
 #include "scsi_logging.h"
-
-
-/*
- * Flags for SCSI devices that need special treatment
- */
-#define BLIST_NOLUN     	0x001	/* Only scan LUN 0 */
-#define BLIST_FORCELUN  	0x002	/* Known to have LUNs, force scanning */
-#define BLIST_BORKEN    	0x004	/* Flag for broken handshaking */
-#define BLIST_KEY       	0x008	/* unlock by special command */
-#define BLIST_SINGLELUN 	0x010	/* Do not use LUNs in parallel */
-#define BLIST_NOTQ		0x020	/* Buggy Tagged Command Queuing */
-#define BLIST_SPARSELUN 	0x040	/* Non consecutive LUN numbering */
-#define BLIST_MAX5LUN		0x080	/* Avoid LUNS >= 5 */
-#define BLIST_ISROM     	0x100	/* Treat as (removable) CD-ROM */
-#define BLIST_LARGELUN		0x200	/* LUNs past 7 on a SCSI-2 device */
-#define BLIST_INQUIRY_36	0x400	/* override additional length field */
-#define BLIST_INQUIRY_58	0x800	/* ... for broken inquiry responses */
-
-/*
- * scsi_static_device_list: deprecated list of devices that require
- * settings that differ from the default, includes black-listed (broken)
- * devices. The entries here are added to the tail of scsi_dev_info_list
- * via scsi_dev_info_list_init.
- *
- * Do not add to this list, use the command line or proc interface to add
- * to the scsi_dev_info_list. This table will eventually go away.
- */
-struct dev_info scsi_static_device_list[] __initdata = {
-	/*
-	 * The following devices are known not to tolerate a lun != 0 scan
-	 * for one reason or another. Some will respond to all luns,
-	 * others will lock up.
-	 */
-	{"Aashima", "IMAGERY 2400SP", "1.03", BLIST_NOLUN},	/* locks up */
-	{"CHINON", "CD-ROM CDS-431", "H42", BLIST_NOLUN},	/* locks up */
-	{"CHINON", "CD-ROM CDS-535", "Q14", BLIST_NOLUN},	/* locks up */
-	{"DENON", "DRD-25X", "V", BLIST_NOLUN},			/* locks up */
-	{"HITACHI", "DK312C", "CM81", BLIST_NOLUN},	/* responds to all lun */
-	{"HITACHI", "DK314C", "CR21", BLIST_NOLUN},	/* responds to all lun */
-	{"IMS", "CDD521/10", "2.06", BLIST_NOLUN},	/* locks up */
-	{"MAXTOR", "XT-3280", "PR02", BLIST_NOLUN},	/* locks up */
-	{"MAXTOR", "XT-4380S", "B3C", BLIST_NOLUN},	/* locks up */
-	{"MAXTOR", "MXT-1240S", "I1.2", BLIST_NOLUN},	/* locks up */
-	{"MAXTOR", "XT-4170S", "B5A", BLIST_NOLUN},	/* locks up */
-	{"MAXTOR", "XT-8760S", "B7B", BLIST_NOLUN},	/* locks up */
-	{"MEDIAVIS", "RENO CD-ROMX2A", "2.03", BLIST_NOLUN},	/* responds to all lun */
-	{"NEC", "CD-ROM DRIVE:841", "1.0", BLIST_NOLUN},/* locks up */
-	{"PHILIPS", "PCA80SC", "V4-2", BLIST_NOLUN},	/* responds to all lun */
-	{"RODIME", "RO3000S", "2.33", BLIST_NOLUN},	/* locks up */
-	{"SUN", "SENA", NULL, BLIST_NOLUN},		/* responds to all luns */
-	/*
-	 * The following causes a failed REQUEST SENSE on lun 1 for
-	 * aha152x controller, which causes SCSI code to reset bus.
-	 */
-	{"SANYO", "CRD-250S", "1.20", BLIST_NOLUN},
-	/*
-	 * The following causes a failed REQUEST SENSE on lun 1 for
-	 * aha152x controller, which causes SCSI code to reset bus.
-	 */
-	{"SEAGATE", "ST157N", "\004|j", BLIST_NOLUN},
-	{"SEAGATE", "ST296", "921", BLIST_NOLUN},	/* responds to all lun */
-	{"SEAGATE", "ST1581", "6538", BLIST_NOLUN},	/* responds to all lun */
-	{"SONY", "CD-ROM CDU-541", "4.3d", BLIST_NOLUN},
-	{"SONY", "CD-ROM CDU-55S", "1.0i", BLIST_NOLUN},
-	{"SONY", "CD-ROM CDU-561", "1.7x", BLIST_NOLUN},
-	{"SONY", "CD-ROM CDU-8012", NULL, BLIST_NOLUN},
-	{"TANDBERG", "TDC 3600", "U07", BLIST_NOLUN},	/* locks up */
-	{"TEAC", "CD-R55S", "1.0H", BLIST_NOLUN},	/* locks up */
-	/*
-	 * The following causes a failed REQUEST SENSE on lun 1 for
-	 * seagate controller, which causes SCSI code to reset bus.
-	 */
-	{"TEAC", "CD-ROM", "1.06", BLIST_NOLUN},
-	{"TEAC", "MT-2ST/45S2-27", "RV M", BLIST_NOLUN},	/* responds to all lun */
-	/*
-	 * The following causes a failed REQUEST SENSE on lun 1 for
-	 * seagate controller, which causes SCSI code to reset bus.
-	 */
-	{"TEXEL", "CD-ROM", "1.06", BLIST_NOLUN},
-	{"QUANTUM", "LPS525S", "3110", BLIST_NOLUN},	/* locks up */
-	{"QUANTUM", "PD1225S", "3110", BLIST_NOLUN},	/* locks up */
-	{"QUANTUM", "FIREBALL ST4.3S", "0F0C", BLIST_NOLUN},	/* locks up */
-	{"MEDIAVIS", "CDR-H93MV", "1.31", BLIST_NOLUN},	/* locks up */
-	{"SANKYO", "CP525", "6.64", BLIST_NOLUN},	/* causes failed REQ SENSE, extra reset */
-	{"HP", "C1750A", "3226", BLIST_NOLUN},		/* scanjet iic */
-	{"HP", "C1790A", "", BLIST_NOLUN},		/* scanjet iip */
-	{"HP", "C2500A", "", BLIST_NOLUN},		/* scanjet iicx */
-	{"YAMAHA", "CDR100", "1.00", BLIST_NOLUN},	/* locks up */
-	{"YAMAHA", "CDR102", "1.00", BLIST_NOLUN},	/* locks up */
-	{"YAMAHA", "CRW8424S", "1.0", BLIST_NOLUN},	/* locks up */
-	{"YAMAHA", "CRW6416S", "1.0c", BLIST_NOLUN},	/* locks up */
-	{"MITSUMI", "CD-R CR-2201CS", "6119", BLIST_NOLUN},	/* locks up */
-	{"RELISYS", "Scorpio", NULL, BLIST_NOLUN},	/* responds to all lun */
-	{"MICROTEK", "ScanMaker II", "5.61", BLIST_NOLUN},	/* responds to all lun */
-	{"NEC", "D3856", "0009", BLIST_NOLUN},
-
-	/*
-	 * Other types of devices that have special flags.
-	 */
-	{"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN},
-	{"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN},
-	{"IOMEGA", "Io20S         *F", NULL, BLIST_KEY},
-	{"INSITE", "Floptical   F*8I", NULL, BLIST_KEY},
-	{"INSITE", "I325VM", NULL, BLIST_KEY},
-	{"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN},
-	{"MICROP", "4110", NULL, BLIST_NOTQ},
-	{"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
-	{"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
-	{"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN},
-	{"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
-	{"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
-	{"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
-	{"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
-	{"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
-	{"EMULEX", "MD21/S2     ESDI", NULL, BLIST_SINGLELUN},
-	{"CANON", "IPUBJD", NULL, BLIST_SPARSELUN},
-	{"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN},
-	{"DEC", "HSG80", NULL, BLIST_FORCELUN},
-	{"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN},
-	{"COMPAQ", "CR3500", NULL, BLIST_FORCELUN},
-	{"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
-	{"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
-	{"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN},
-	{"TOSHIBA", "CDROM", NULL, BLIST_ISROM},
-	{"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
-	{"MegaRAID", "LD", NULL, BLIST_FORCELUN},
-	{"DGC", "RAID", NULL, BLIST_SPARSELUN},	/* Dell PV 650F, storage on LUN 0 */
-	{"DGC", "DISK", NULL, BLIST_SPARSELUN},	/* Dell PV 650F, no storage on LUN 0 */
-	{"DELL", "PV660F", NULL, BLIST_SPARSELUN},
-	{"DELL", "PV660F   PSEUDO", NULL, BLIST_SPARSELUN},
-	{"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN},	/* Dell PV 530F */
-	{"DELL", "PV530F", NULL, BLIST_SPARSELUN},
-	{"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_FORCELUN},
-	{"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN},	/* HP VA7400 */
-	{"HP", "OPEN-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP XP Arrays */
-	{"CMD", "CRA-7280", NULL, BLIST_SPARSELUN},	/* CMD RAID Controller */
-	{"CNSI", "G7324", NULL, BLIST_SPARSELUN},	/* Chaparral G7324 RAID */
-	{"CNSi", "G8324", NULL, BLIST_SPARSELUN},	/* Chaparral G8324 RAID */
-	{"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN},
-	{"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN},
-	{"SONY", "TSL", NULL, BLIST_FORCELUN},		/* DDS3 & DDS4 autoloaders */
-	{"DELL", "PERCRAID", NULL, BLIST_FORCELUN},
-	{"HP", "NetRAID-4M", NULL, BLIST_FORCELUN},
-	{"ADAPTEC", "AACRAID", NULL, BLIST_FORCELUN},
-	{"ADAPTEC", "Adaptec 5400S", NULL, BLIST_FORCELUN},
-	{"COMPAQ", "MSA1000", NULL, BLIST_FORCELUN},
-	{"HP", "C1557A", NULL, BLIST_FORCELUN},
-	{"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN},
-	{"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
-	{"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN},
-	{"HITACHI", "DF400", "*", BLIST_SPARSELUN},
-	{"HITACHI", "DF500", "*", BLIST_SPARSELUN},
-	{"HITACHI", "DF600", "*", BLIST_SPARSELUN},
-	{"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
-	{"SUN", "T300", "*", BLIST_SPARSELUN},
-	{"SUN", "T4", "*", BLIST_SPARSELUN},
-	{"SGI", "RAID3", "*", BLIST_SPARSELUN},
-	{"SGI", "RAID5", "*", BLIST_SPARSELUN},
-	{"SGI", "TP9100", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
-	{"SGI", "TP9300", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
-	{"SGI", "TP9400", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
-	{"SGI", "TP9500", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
-	{"MYLEX", "DACARMRB", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
-	{ NULL, NULL, NULL, 0 },
-};
+#include "scsi_devinfo.h"
 
 #define ALLOC_FAILURE_MSG	KERN_ERR "%s: Allocation failure during" \
 	" SCSI scanning, some SCSI devices might not be configured\n"
--- /dev/null	2002-08-30 19:31:37.000000000 -0400
+++ b/drivers/scsi/scsi_devinfo.c	2003-05-08 18:35:53.000000000 -0400
@@ -0,0 +1,542 @@
+
+#include <linux/blkdev.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+
+#include "scsi.h"
+#include "scsi_priv.h"
+#include "scsi_devinfo.h"
+
+/*
+ * scsi_dev_info_list: structure to hold black/white listed devices.
+ */
+struct scsi_dev_info_list {
+	struct list_head dev_info_list;
+	char vendor[8];
+	char model[16];
+	unsigned flags;
+	unsigned compatible; /* for use with scsi_static_device_list entries */
+};
+
+
+static const char spaces[] = "                "; /* 16 of them */
+static char *scsi_dev_flags;
+static unsigned scsi_default_dev_flags;
+static LIST_HEAD(scsi_dev_info_list);
+
+/*
+ * scsi_static_device_list: deprecated list of devices that require
+ * settings that differ from the default, includes black-listed (broken)
+ * devices. The entries here are added to the tail of scsi_dev_info_list
+ * via scsi_dev_info_list_init.
+ *
+ * Do not add to this list, use the command line or proc interface to add
+ * to the scsi_dev_info_list. This table will eventually go away.
+ */
+static struct {
+	char *vendor;
+	char *model;
+	char *revision;	/* revision known to be bad, unused */
+	unsigned flags;
+} scsi_static_device_list[] __initdata = {
+	/*
+	 * The following devices are known not to tolerate a lun != 0 scan
+	 * for one reason or another. Some will respond to all luns,
+	 * others will lock up.
+	 */
+	{"Aashima", "IMAGERY 2400SP", "1.03", BLIST_NOLUN},	/* locks up */
+	{"CHINON", "CD-ROM CDS-431", "H42", BLIST_NOLUN},	/* locks up */
+	{"CHINON", "CD-ROM CDS-535", "Q14", BLIST_NOLUN},	/* locks up */
+	{"DENON", "DRD-25X", "V", BLIST_NOLUN},			/* locks up */
+	{"HITACHI", "DK312C", "CM81", BLIST_NOLUN},	/* responds to all lun */
+	{"HITACHI", "DK314C", "CR21", BLIST_NOLUN},	/* responds to all lun */
+	{"IMS", "CDD521/10", "2.06", BLIST_NOLUN},	/* locks up */
+	{"MAXTOR", "XT-3280", "PR02", BLIST_NOLUN},	/* locks up */
+	{"MAXTOR", "XT-4380S", "B3C", BLIST_NOLUN},	/* locks up */
+	{"MAXTOR", "MXT-1240S", "I1.2", BLIST_NOLUN},	/* locks up */
+	{"MAXTOR", "XT-4170S", "B5A", BLIST_NOLUN},	/* locks up */
+	{"MAXTOR", "XT-8760S", "B7B", BLIST_NOLUN},	/* locks up */
+	{"MEDIAVIS", "RENO CD-ROMX2A", "2.03", BLIST_NOLUN},	/* responds to all lun */
+	{"NEC", "CD-ROM DRIVE:841", "1.0", BLIST_NOLUN},/* locks up */
+	{"PHILIPS", "PCA80SC", "V4-2", BLIST_NOLUN},	/* responds to all lun */
+	{"RODIME", "RO3000S", "2.33", BLIST_NOLUN},	/* locks up */
+	{"SUN", "SENA", NULL, BLIST_NOLUN},		/* responds to all luns */
+	/*
+	 * The following causes a failed REQUEST SENSE on lun 1 for
+	 * aha152x controller, which causes SCSI code to reset bus.
+	 */
+	{"SANYO", "CRD-250S", "1.20", BLIST_NOLUN},
+	/*
+	 * The following causes a failed REQUEST SENSE on lun 1 for
+	 * aha152x controller, which causes SCSI code to reset bus.
+	 */
+	{"SEAGATE", "ST157N", "\004|j", BLIST_NOLUN},
+	{"SEAGATE", "ST296", "921", BLIST_NOLUN},	/* responds to all lun */
+	{"SEAGATE", "ST1581", "6538", BLIST_NOLUN},	/* responds to all lun */
+	{"SONY", "CD-ROM CDU-541", "4.3d", BLIST_NOLUN},
+	{"SONY", "CD-ROM CDU-55S", "1.0i", BLIST_NOLUN},
+	{"SONY", "CD-ROM CDU-561", "1.7x", BLIST_NOLUN},
+	{"SONY", "CD-ROM CDU-8012", NULL, BLIST_NOLUN},
+	{"TANDBERG", "TDC 3600", "U07", BLIST_NOLUN},	/* locks up */
+	{"TEAC", "CD-R55S", "1.0H", BLIST_NOLUN},	/* locks up */
+	/*
+	 * The following causes a failed REQUEST SENSE on lun 1 for
+	 * seagate controller, which causes SCSI code to reset bus.
+	 */
+	{"TEAC", "CD-ROM", "1.06", BLIST_NOLUN},
+	{"TEAC", "MT-2ST/45S2-27", "RV M", BLIST_NOLUN},	/* responds to all lun */
+	/*
+	 * The following causes a failed REQUEST SENSE on lun 1 for
+	 * seagate controller, which causes SCSI code to reset bus.
+	 */
+	{"TEXEL", "CD-ROM", "1.06", BLIST_NOLUN},
+	{"QUANTUM", "LPS525S", "3110", BLIST_NOLUN},	/* locks up */
+	{"QUANTUM", "PD1225S", "3110", BLIST_NOLUN},	/* locks up */
+	{"QUANTUM", "FIREBALL ST4.3S", "0F0C", BLIST_NOLUN},	/* locks up */
+	{"MEDIAVIS", "CDR-H93MV", "1.31", BLIST_NOLUN},	/* locks up */
+	{"SANKYO", "CP525", "6.64", BLIST_NOLUN},	/* causes failed REQ SENSE, extra reset */
+	{"HP", "C1750A", "3226", BLIST_NOLUN},		/* scanjet iic */
+	{"HP", "C1790A", "", BLIST_NOLUN},		/* scanjet iip */
+	{"HP", "C2500A", "", BLIST_NOLUN},		/* scanjet iicx */
+	{"YAMAHA", "CDR100", "1.00", BLIST_NOLUN},	/* locks up */
+	{"YAMAHA", "CDR102", "1.00", BLIST_NOLUN},	/* locks up */
+	{"YAMAHA", "CRW8424S", "1.0", BLIST_NOLUN},	/* locks up */
+	{"YAMAHA", "CRW6416S", "1.0c", BLIST_NOLUN},	/* locks up */
+	{"MITSUMI", "CD-R CR-2201CS", "6119", BLIST_NOLUN},	/* locks up */
+	{"RELISYS", "Scorpio", NULL, BLIST_NOLUN},	/* responds to all lun */
+	{"MICROTEK", "ScanMaker II", "5.61", BLIST_NOLUN},	/* responds to all lun */
+	{"NEC", "D3856", "0009", BLIST_NOLUN},
+
+	/*
+	 * Other types of devices that have special flags.
+	 */
+	{"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN},
+	{"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN},
+	{"IOMEGA", "Io20S         *F", NULL, BLIST_KEY},
+	{"INSITE", "Floptical   F*8I", NULL, BLIST_KEY},
+	{"INSITE", "I325VM", NULL, BLIST_KEY},
+	{"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN},
+	{"MICROP", "4110", NULL, BLIST_NOTQ},
+	{"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
+	{"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
+	{"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN},
+	{"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
+	{"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
+	{"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
+	{"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
+	{"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
+	{"EMULEX", "MD21/S2     ESDI", NULL, BLIST_SINGLELUN},
+	{"CANON", "IPUBJD", NULL, BLIST_SPARSELUN},
+	{"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN},
+	{"DEC", "HSG80", NULL, BLIST_FORCELUN},
+	{"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN},
+	{"COMPAQ", "CR3500", NULL, BLIST_FORCELUN},
+	{"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
+	{"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
+	{"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN},
+	{"TOSHIBA", "CDROM", NULL, BLIST_ISROM},
+	{"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
+	{"MegaRAID", "LD", NULL, BLIST_FORCELUN},
+	{"DGC", "RAID", NULL, BLIST_SPARSELUN},	/* Dell PV 650F, storage on LUN 0 */
+	{"DGC", "DISK", NULL, BLIST_SPARSELUN},	/* Dell PV 650F, no storage on LUN 0 */
+	{"DELL", "PV660F", NULL, BLIST_SPARSELUN},
+	{"DELL", "PV660F   PSEUDO", NULL, BLIST_SPARSELUN},
+	{"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN},	/* Dell PV 530F */
+	{"DELL", "PV530F", NULL, BLIST_SPARSELUN},
+	{"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_FORCELUN},
+	{"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN},	/* HP VA7400 */
+	{"HP", "OPEN-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP XP Arrays */
+	{"CMD", "CRA-7280", NULL, BLIST_SPARSELUN},	/* CMD RAID Controller */
+	{"CNSI", "G7324", NULL, BLIST_SPARSELUN},	/* Chaparral G7324 RAID */
+	{"CNSi", "G8324", NULL, BLIST_SPARSELUN},	/* Chaparral G8324 RAID */
+	{"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN},
+	{"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN},
+	{"SONY", "TSL", NULL, BLIST_FORCELUN},		/* DDS3 & DDS4 autoloaders */
+	{"DELL", "PERCRAID", NULL, BLIST_FORCELUN},
+	{"HP", "NetRAID-4M", NULL, BLIST_FORCELUN},
+	{"ADAPTEC", "AACRAID", NULL, BLIST_FORCELUN},
+	{"ADAPTEC", "Adaptec 5400S", NULL, BLIST_FORCELUN},
+	{"COMPAQ", "MSA1000", NULL, BLIST_FORCELUN},
+	{"HP", "C1557A", NULL, BLIST_FORCELUN},
+	{"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN},
+	{"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
+	{"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN},
+	{"HITACHI", "DF400", "*", BLIST_SPARSELUN},
+	{"HITACHI", "DF500", "*", BLIST_SPARSELUN},
+	{"HITACHI", "DF600", "*", BLIST_SPARSELUN},
+	{"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
+	{"SUN", "T300", "*", BLIST_SPARSELUN},
+	{"SUN", "T4", "*", BLIST_SPARSELUN},
+	{"SGI", "RAID3", "*", BLIST_SPARSELUN},
+	{"SGI", "RAID5", "*", BLIST_SPARSELUN},
+	{"SGI", "TP9100", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
+	{"SGI", "TP9300", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
+	{"SGI", "TP9400", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
+	{"SGI", "TP9500", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
+	{"MYLEX", "DACARMRB", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
+	{ NULL, NULL, NULL, 0 },
+};
+
+/*
+ * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into
+ * devinfo vendor and model strings.
+ */
+static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
+				char *from, int compatible)
+{
+	size_t from_length;
+
+	from_length = strlen(from);
+	strncpy(to, from, min(to_length, from_length));
+	if (from_length < to_length) {
+		if (compatible) {
+			/*
+			 * NUL terminate the string if it is short.
+			 */
+			to[from_length] = '\0';
+		} else {
+			/* 
+			 * space pad the string if it is short. 
+			 */
+			strncpy(&to[from_length], spaces,
+				to_length - from_length);
+		}
+	}
+	if (from_length > to_length)
+		 printk(KERN_WARNING "%s: %s string '%s' is too long\n",
+			__FUNCTION__, name, from);
+}
+
+/**
+ * scsi_dev_info_list_add: add one dev_info list entry.
+ * @vendor:	vendor string
+ * @model:	model (product) string
+ * @strflags:	integer string
+ * @flag:	if strflags NULL, use this flag value
+ *
+ * Description:
+ * 	Create and add one dev_info entry for @vendor, @model, @strflags or
+ * 	@flag. If @compatible, add to the tail of the list, do not space
+ * 	pad, and set devinfo->compatible. The scsi_static_device_list entries
+ * 	are added with @compatible 1 and @clfags NULL.
+ *
+ * Returns: 0 OK, -error on failure.
+ **/
+static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
+			    char *strflags, int flags)
+{
+	struct scsi_dev_info_list *devinfo;
+
+	devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL);
+	if (!devinfo) {
+		printk(KERN_ERR "%s: no memory\n", __FUNCTION__);
+		return -ENOMEM;
+	}
+
+	scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor),
+			    vendor, compatible);
+	scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model),
+			    model, compatible);
+
+	if (strflags)
+		devinfo->flags = simple_strtoul(strflags, NULL, 0);
+	else
+		devinfo->flags = flags;
+
+	devinfo->compatible = compatible;
+
+	if (compatible)
+		list_add_tail(&devinfo->dev_info_list, &scsi_dev_info_list);
+	else
+		list_add(&devinfo->dev_info_list, &scsi_dev_info_list);
+
+	return 0;
+}
+
+/**
+ * scsi_dev_info_list_add_str: parse dev_list and add to the
+ * scsi_dev_info_list.
+ * @dev_list:	string of device flags to add
+ *
+ * Description:
+ * 	Parse dev_list, and add entries to the scsi_dev_info_list.
+ * 	dev_list is of the form "vendor:product:flag,vendor:product:flag".
+ * 	dev_list is modified via strsep. Can be called for command line
+ * 	addition, for proc or mabye a sysfs interface.
+ *
+ * Returns: 0 if OK, -error on failure.
+ **/
+static int scsi_dev_info_list_add_str(char *dev_list)
+{
+	char *vendor, *model, *strflags, *next;
+	char *next_check;
+	int res = 0;
+
+	next = dev_list;
+	if (next && next[0] == '"') {
+		/*
+		 * Ignore both the leading and trailing quote.
+		 */
+		next++;
+		next_check = ",\"";
+	} else {
+		next_check = ",";
+	}
+
+	/*
+	 * For the leading and trailing '"' case, the for loop comes
+	 * through the last time with vendor[0] == '\0'.
+	 */
+	for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0')
+	     && (res == 0); vendor = strsep(&next, ":")) {
+		strflags = NULL;
+		model = strsep(&next, ":");
+		if (model)
+			strflags = strsep(&next, next_check);
+		if (!model || !strflags) {
+			printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
+			       " '%s'\n", __FUNCTION__, vendor, model,
+			       strflags);
+			res = -EINVAL;
+		} else
+			res = scsi_dev_info_list_add(0 /* compatible */, vendor,
+						     model, strflags, 0);
+	}
+	return res;
+}
+
+/**
+ * get_device_flags - get device specific flags from the dynamic device
+ * list. Called during scan time.
+ * @vendor:	vendor name
+ * @model:	model name
+ *
+ * Description:
+ *     Search the scsi_dev_info_list for an entry matching @vendor and
+ *     @model, if found, return the matching flags value, else return
+ *     scsi_default_dev_flags.
+ **/
+int scsi_get_device_flags(unsigned char *vendor, unsigned char *model)
+{
+	struct scsi_dev_info_list *devinfo;
+
+	list_for_each_entry(devinfo, &scsi_dev_info_list, dev_info_list) {
+		if (devinfo->compatible) {
+			/*
+			 * Behave like the older version of get_device_flags.
+			 */
+			size_t max;
+			/*
+			 * XXX why skip leading spaces? If an odd INQUIRY
+			 * value, that should have been part of the
+			 * scsi_static_device_list[] entry, such as "  FOO"
+			 * rather than "FOO". Since this code is already
+			 * here, and we don't know what device it is
+			 * trying to work with, leave it as-is.
+			 */
+			max = 8;	/* max length of vendor */
+			while ((max > 0) && *vendor == ' ') {
+				max--;
+				vendor++;
+			}
+			/*
+			 * XXX removing the following strlen() would be
+			 * good, using it means that for a an entry not in
+			 * the list, we scan every byte of every vendor
+			 * listed in scsi_static_device_list[], and never match
+			 * a single one (and still have to compare at
+			 * least the first byte of each vendor).
+			 */
+			if (memcmp(devinfo->vendor, vendor,
+				    min(max, strlen(devinfo->vendor))))
+				continue;
+			/*
+			 * Skip spaces again.
+			 */
+			max = 16;	/* max length of model */
+			while ((max > 0) && *model == ' ') {
+				max--;
+				model++;
+			}
+			if (memcmp(devinfo->model, model,
+				   min(max, strlen(devinfo->model))))
+				continue;
+			return devinfo->flags;
+		} else {
+			if (!memcmp(devinfo->vendor, vendor,
+				     sizeof(devinfo->vendor)) &&
+			     !memcmp(devinfo->model, model,
+				      sizeof(devinfo->model)))
+				return devinfo->flags;
+		}
+	}
+	return scsi_default_dev_flags;
+}
+
+/* 
+ * proc_scsi_dev_info_read: dump the scsi_dev_info_list via
+ * /proc/scsi/device_info
+ */
+static int proc_scsi_devinfo_read(char *buffer, char **start,
+				  off_t offset, int length)
+{
+	struct scsi_dev_info_list *devinfo;
+	int size, len = 0;
+	off_t begin = 0;
+	off_t pos = 0;
+
+	list_for_each_entry(devinfo, &scsi_dev_info_list, dev_info_list) {
+		size = sprintf(buffer + len, "'%.8s' '%.16s' 0x%x\n",
+			devinfo->vendor, devinfo->model, devinfo->flags);
+		len += size;
+		pos = begin + len;
+		if (pos < offset) {
+			len = 0;
+			begin = pos;
+		}
+		if (pos > offset + length)
+			goto stop_output;
+	}
+
+stop_output:
+	*start = buffer + (offset - begin);	/* Start of wanted data */
+	len -= (offset - begin);	/* Start slop */
+	if (len > length)
+		len = length;	/* Ending slop */
+	return (len);
+}
+
+/* 
+ * proc_scsi_dev_info_write: allow additions to the scsi_dev_info_list via
+ * /proc.
+ *
+ * Use: echo "vendor:model:flag" > /proc/scsi/device_info
+ *
+ * To add a black/white list entry for vendor and model with an integer
+ * value of flag to the scsi device info list.
+ */
+static int proc_scsi_devinfo_write(struct file *file, const char *buf,
+				   unsigned long length, void *data)
+{
+	char *buffer;
+	int err = length;
+
+	if (!buf || length>PAGE_SIZE)
+		return -EINVAL;
+	if (!(buffer = (char *) __get_free_page(GFP_KERNEL)))
+		return -ENOMEM;
+	if (copy_from_user(buffer, buf, length)) {
+		err =-EFAULT;
+		goto out;
+	}
+
+	if (length < PAGE_SIZE)
+		buffer[length] = '\0';
+	else if (buffer[PAGE_SIZE-1]) {
+		err = -EINVAL;
+		goto out;
+	}
+
+	scsi_dev_info_list_add_str(buffer);
+
+out:
+	free_page((unsigned long)buffer);
+	return err;
+}
+
+MODULE_PARM(scsi_dev_flags, "s");
+MODULE_PARM_DESC(scsi_dev_flags,
+	 "Given scsi_dev_flags=vendor:model:flags, add a black/white list"
+	 " entry for vendor and model with an integer value of flags"
+	 " to the scsi device info list");
+MODULE_PARM(scsi_default_dev_flags, "i");
+MODULE_PARM_DESC(scsi_default_dev_flags,
+		 "scsi default device flag integer value");
+
+static int __init setup_scsi_dev_flags(char *str)
+{
+	scsi_dev_flags = str;
+	return 1;
+}
+
+static int __init setup_scsi_default_dev_flags(char *str)
+{
+	unsigned int tmp;
+	if (get_option(&str, &tmp) == 1) {
+		scsi_default_dev_flags = tmp;
+		printk(KERN_WARNING "%s %d\n", __FUNCTION__,
+		       scsi_default_dev_flags);
+		return 1;
+	} else {
+		printk(KERN_WARNING "%s: usage scsi_default_dev_flags=intr\n",
+		       __FUNCTION__);
+		return 0;
+	}
+}
+
+/**
+ * scsi_dev_info_list_delete: called from scsi.c:exit_scsi to remove
+ * 	the scsi_dev_info_list.
+ **/
+void scsi_exit_devinfo(void)
+{
+	struct list_head *lh, *lh_next;
+	struct scsi_dev_info_list *devinfo;
+
+	remove_proc_entry("scsi/device_info", 0);
+
+	list_for_each_safe(lh, lh_next, &scsi_dev_info_list) {
+		devinfo = list_entry(lh, struct scsi_dev_info_list,
+				     dev_info_list);
+		kfree(devinfo);
+	}
+}
+
+/**
+ * scsi_dev_list_init: set up the dynamic device list.
+ * @dev_list:	string of device flags to add
+ *
+ * Description:
+ * 	Add command line @dev_list entries, then add
+ * 	scsi_static_device_list entries to the scsi device info list.
+ **/
+int scsi_init_devinfo(void)
+{
+	struct proc_dir_entry *p;
+	int error, i;
+
+	error = scsi_dev_info_list_add_str(scsi_dev_flags);
+	if (error)
+		return error;
+
+	for (i = 0; scsi_static_device_list[i].vendor; i++) {
+		error = scsi_dev_info_list_add(1 /* compatibile */,
+				scsi_static_device_list[i].vendor,
+				scsi_static_device_list[i].model,
+				NULL,
+				scsi_static_device_list[i].flags);
+		if (error)
+			goto out;
+	}
+
+	p = create_proc_entry("scsi/device_info", 0, NULL);
+	if (!p) {
+		error = -ENOMEM;
+		goto out;
+	}
+
+	p->owner = THIS_MODULE;
+	p->get_info = proc_scsi_devinfo_read;
+	p->write_proc = proc_scsi_devinfo_write;
+
+ out:
+	if (error)
+		scsi_exit_devinfo();
+	return error;
+}
+
+__setup("scsi_dev_flags=", setup_scsi_dev_flags);
+__setup("scsi_default_dev_flags=", setup_scsi_default_dev_flags);
--- /dev/null	2002-08-30 19:31:37.000000000 -0400
+++ b/drivers/scsi/scsi_devinfo.h	2003-05-01 14:29:55.000000000 -0400
@@ -0,0 +1,16 @@
+
+/*
+ * Flags for SCSI devices that need special treatment
+ */
+#define BLIST_NOLUN     	0x001	/* Only scan LUN 0 */
+#define BLIST_FORCELUN  	0x002	/* Known to have LUNs, force scanning */
+#define BLIST_BORKEN    	0x004	/* Flag for broken handshaking */
+#define BLIST_KEY       	0x008	/* unlock by special command */
+#define BLIST_SINGLELUN 	0x010	/* Do not use LUNs in parallel */
+#define BLIST_NOTQ		0x020	/* Buggy Tagged Command Queuing */
+#define BLIST_SPARSELUN 	0x040	/* Non consecutive LUN numbering */
+#define BLIST_MAX5LUN		0x080	/* Avoid LUNS >= 5 */
+#define BLIST_ISROM     	0x100	/* Treat as (removable) CD-ROM */
+#define BLIST_LARGELUN		0x200	/* LUNs past 7 on a SCSI-2 device */
+#define BLIST_INQUIRY_36	0x400	/* override additional length field */
+#define BLIST_INQUIRY_58	0x800	/* ... for broken inquiry responses */