Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 2742 insertions, 0 deletions

diff --git a/drivers/s390/block/dasd_3990_erp.c b/drivers/s390/block/dasd_3990_erp.c
new file mode 100644
index 000000000000..c143ecb53d9d
--- /dev/null
+++ b/drivers/s390/block/dasd_3990_erp.c
@@ -0,0 +1,2742 @@
+/* 
+ * File...........: linux/drivers/s390/block/dasd_3990_erp.c
+ * Author(s)......: Horst  Hummel    <Horst.Hummel@de.ibm.com> 
+ *		    Holger Smolinski <Holger.Smolinski@de.ibm.com>
+ * Bugreports.to..: <Linux390@de.ibm.com>
+ * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 2000, 2001
+ *
+ * $Revision: 1.36 $
+ */
+
+#include <linux/timer.h>
+#include <linux/slab.h>
+#include <asm/idals.h>
+#include <asm/todclk.h>
+
+#define PRINTK_HEADER "dasd_erp(3990): "
+
+#include "dasd_int.h"
+#include "dasd_eckd.h"
+
+
+struct DCTL_data {
+	unsigned char subcommand;  /* e.g Inhibit Write, Enable Write,... */
+	unsigned char modifier;	   /* Subcommand modifier */
+	unsigned short res;	   /* reserved */
+} __attribute__ ((packed));
+
+/*
+ ***************************************************************************** 
+ * SECTION ERP EXAMINATION
+ ***************************************************************************** 
+ */
+
+/*
+ * DASD_3990_ERP_EXAMINE_24 
+ *
+ * DESCRIPTION
+ *   Checks only for fatal (unrecoverable) error. 
+ *   A detailed examination of the sense data is done later outside
+ *   the interrupt handler.
+ *
+ *   Each bit configuration leading to an action code 2 (Exit with
+ *   programming error or unusual condition indication)
+ *   are handled as fatal errorīs.
+ * 
+ *   All other configurations are handled as recoverable errors.
+ *
+ * RETURN VALUES
+ *   dasd_era_fatal	for all fatal (unrecoverable errors)
+ *   dasd_era_recover	for all others.
+ */
+static dasd_era_t
+dasd_3990_erp_examine_24(struct dasd_ccw_req * cqr, char *sense)
+{
+
+	struct dasd_device *device = cqr->device;
+
+	/* check for 'Command Reject' */
+	if ((sense[0] & SNS0_CMD_REJECT) &&
+	    (!(sense[2] & SNS2_ENV_DATA_PRESENT))) {
+
+		DEV_MESSAGE(KERN_ERR, device, "%s",
+			    "EXAMINE 24: Command Reject detected - "
+			    "fatal error");
+
+		return dasd_era_fatal;
+	}
+
+	/* check for 'Invalid Track Format' */
+	if ((sense[1] & SNS1_INV_TRACK_FORMAT) &&
+	    (!(sense[2] & SNS2_ENV_DATA_PRESENT))) {
+
+		DEV_MESSAGE(KERN_ERR, device, "%s",
+			    "EXAMINE 24: Invalid Track Format detected "
+			    "- fatal error");
+
+		return dasd_era_fatal;
+	}
+
+	/* check for 'No Record Found' */
+	if (sense[1] & SNS1_NO_REC_FOUND) {
+
+                /* FIXME: fatal error ?!? */
+		DEV_MESSAGE(KERN_ERR, device,
+			    "EXAMINE 24: No Record Found detected %s",
+                            device->state <= DASD_STATE_BASIC ?
+			    " " : "- fatal error");
+
+		return dasd_era_fatal;
+	}
+
+	/* return recoverable for all others */
+	return dasd_era_recover;
+}				/* END dasd_3990_erp_examine_24 */
+
+/*
+ * DASD_3990_ERP_EXAMINE_32 
+ *
+ * DESCRIPTION
+ *   Checks only for fatal/no/recoverable error. 
+ *   A detailed examination of the sense data is done later outside
+ *   the interrupt handler.
+ *
+ * RETURN VALUES
+ *   dasd_era_none	no error 
+ *   dasd_era_fatal	for all fatal (unrecoverable errors)
+ *   dasd_era_recover	for recoverable others.
+ */
+static dasd_era_t
+dasd_3990_erp_examine_32(struct dasd_ccw_req * cqr, char *sense)
+{
+
+	struct dasd_device *device = cqr->device;
+
+	switch (sense[25]) {
+	case 0x00:
+		return dasd_era_none;
+
+	case 0x01:
+		DEV_MESSAGE(KERN_ERR, device, "%s", "EXAMINE 32: fatal error");
+
+		return dasd_era_fatal;
+
+	default:
+
+		return dasd_era_recover;
+	}
+
+}				/* end dasd_3990_erp_examine_32 */
+
+/*
+ * DASD_3990_ERP_EXAMINE 
+ *
+ * DESCRIPTION
+ *   Checks only for fatal/no/recover error. 
+ *   A detailed examination of the sense data is done later outside
+ *   the interrupt handler.
+ *
+ *   The logic is based on the 'IBM 3990 Storage Control  Reference' manual
+ *   'Chapter 7. Error Recovery Procedures'.
+ *
+ * RETURN VALUES
+ *   dasd_era_none	no error 
+ *   dasd_era_fatal	for all fatal (unrecoverable errors)
+ *   dasd_era_recover	for all others.
+ */
+dasd_era_t
+dasd_3990_erp_examine(struct dasd_ccw_req * cqr, struct irb * irb)
+{
+
+	char *sense = irb->ecw;
+	dasd_era_t era = dasd_era_recover;
+	struct dasd_device *device = cqr->device;
+
+	/* check for successful execution first */
+	if (irb->scsw.cstat == 0x00 &&
+	    irb->scsw.dstat == (DEV_STAT_CHN_END | DEV_STAT_DEV_END))
+		return dasd_era_none;
+
+	/* distinguish between 24 and 32 byte sense data */
+	if (sense[27] & DASD_SENSE_BIT_0) {
+
+		era = dasd_3990_erp_examine_24(cqr, sense);
+
+	} else {
+
+		era = dasd_3990_erp_examine_32(cqr, sense);
+
+	}
+
+	/* log the erp chain if fatal error occurred */
+	if ((era == dasd_era_fatal) && (device->state >= DASD_STATE_READY)) {
+		dasd_log_sense(cqr, irb);
+		dasd_log_ccw(cqr, 0, irb->scsw.cpa);
+	}
+
+	return era;
+
+}				/* END dasd_3990_erp_examine */
+
+/*
+ ***************************************************************************** 
+ * SECTION ERP HANDLING
+ ***************************************************************************** 
+ */
+/*
+ ***************************************************************************** 
+ * 24 and 32 byte sense ERP functions
+ ***************************************************************************** 
+ */
+
+/*
+ * DASD_3990_ERP_CLEANUP 
+ *
+ * DESCRIPTION
+ *   Removes the already build but not necessary ERP request and sets
+ *   the status of the original cqr / erp to the given (final) status
+ *
+ *  PARAMETER
+ *   erp		request to be blocked
+ *   final_status	either DASD_CQR_DONE or DASD_CQR_FAILED 
+ *
+ * RETURN VALUES
+ *   cqr		original cqr		   
+ */
+static struct dasd_ccw_req *
+dasd_3990_erp_cleanup(struct dasd_ccw_req * erp, char final_status)
+{
+	struct dasd_ccw_req *cqr = erp->refers;
+
+	dasd_free_erp_request(erp, erp->device);
+	cqr->status = final_status;
+	return cqr;
+
+}				/* end dasd_3990_erp_cleanup */
+
+/*
+ * DASD_3990_ERP_BLOCK_QUEUE 
+ *
+ * DESCRIPTION
+ *   Block the given device request queue to prevent from further
+ *   processing until the started timer has expired or an related
+ *   interrupt was received.
+ */
+static void
+dasd_3990_erp_block_queue(struct dasd_ccw_req * erp, int expires)
+{
+
+	struct dasd_device *device = erp->device;
+
+	DEV_MESSAGE(KERN_INFO, device,
+		    "blocking request queue for %is", expires/HZ);
+
+	device->stopped |= DASD_STOPPED_PENDING;
+	erp->status = DASD_CQR_QUEUED;
+
+	dasd_set_timer(device, expires);
+}
+
+/*
+ * DASD_3990_ERP_INT_REQ 
+ *
+ * DESCRIPTION
+ *   Handles 'Intervention Required' error.
+ *   This means either device offline or not installed.
+ *
+ * PARAMETER
+ *   erp		current erp
+ * RETURN VALUES
+ *   erp		modified erp
+ */
+static struct dasd_ccw_req *
+dasd_3990_erp_int_req(struct dasd_ccw_req * erp)
+{
+
+	struct dasd_device *device = erp->device;
+
+	/* first time set initial retry counter and erp_function */
+	/* and retry once without blocking queue		 */
+	/* (this enables easier enqueing of the cqr)		 */
+	if (erp->function != dasd_3990_erp_int_req) {
+
+		erp->retries = 256;
+		erp->function = dasd_3990_erp_int_req;
+
+	} else {
+
+		/* issue a message and wait for 'device ready' interrupt */
+		DEV_MESSAGE(KERN_ERR, device, "%s",
+			    "is offline or not installed - "
+			    "INTERVENTION REQUIRED!!");
+
+		dasd_3990_erp_block_queue(erp, 60*HZ);
+	}
+
+	return erp;
+
+}				/* end dasd_3990_erp_int_req */
+
+/*
+ * DASD_3990_ERP_ALTERNATE_PATH 
+ *
+ * DESCRIPTION
+ *   Repeat the operation on a different channel path.
+ *   If all alternate paths have been tried, the request is posted with a
+ *   permanent error.
+ *
+ *  PARAMETER
+ *   erp		pointer to the current ERP
+ *
+ * RETURN VALUES
+ *   erp		modified pointer to the ERP
+ */
+static void
+dasd_3990_erp_alternate_path(struct dasd_ccw_req * erp)
+{
+	struct dasd_device *device = erp->device;
+	__u8 opm;
+
+	/* try alternate valid path */
+	opm = ccw_device_get_path_mask(device->cdev);
+	//FIXME: start with get_opm ?
+	if (erp->lpm == 0)
+		erp->lpm = LPM_ANYPATH & ~(erp->irb.esw.esw0.sublog.lpum);
+	else
+		erp->lpm &= ~(erp->irb.esw.esw0.sublog.lpum);
+
+	if ((erp->lpm & opm) != 0x00) {
+
+		DEV_MESSAGE(KERN_DEBUG, device,
+			    "try alternate lpm=%x (lpum=%x / opm=%x)",
+			    erp->lpm, erp->irb.esw.esw0.sublog.lpum, opm);
+
+		/* reset status to queued to handle the request again... */
+		if (erp->status > DASD_CQR_QUEUED)
+			erp->status = DASD_CQR_QUEUED;
+		erp->retries = 1;
+	} else {
+		DEV_MESSAGE(KERN_ERR, device,
+			    "No alternate channel path left (lpum=%x / "
+			    "opm=%x) -> permanent error",
+			    erp->irb.esw.esw0.sublog.lpum, opm);
+
+		/* post request with permanent error */
+		if (erp->status > DASD_CQR_QUEUED)
+			erp->status = DASD_CQR_FAILED;
+	}
+}				/* end dasd_3990_erp_alternate_path */
+
+/*
+ * DASD_3990_ERP_DCTL
+ *
+ * DESCRIPTION
+ *   Setup cqr to do the Diagnostic Control (DCTL) command with an 
+ *   Inhibit Write subcommand (0x20) and the given modifier.
+ *
+ *  PARAMETER
+ *   erp		pointer to the current (failed) ERP
+ *   modifier		subcommand modifier
+ *   
+ * RETURN VALUES
+ *   dctl_cqr		pointer to NEW dctl_cqr 
+ *
+ */
+static struct dasd_ccw_req *
+dasd_3990_erp_DCTL(struct dasd_ccw_req * erp, char modifier)
+{
+
+	struct dasd_device *device = erp->device;
+	struct DCTL_data *DCTL_data;
+	struct ccw1 *ccw;
+	struct dasd_ccw_req *dctl_cqr;
+
+	dctl_cqr = dasd_alloc_erp_request((char *) &erp->magic, 1,
+					  sizeof (struct DCTL_data),
+					  erp->device);
+	if (IS_ERR(dctl_cqr)) {
+		DEV_MESSAGE(KERN_ERR, device, "%s",
+			    "Unable to allocate DCTL-CQR");
+		erp->status = DASD_CQR_FAILED;
+		return erp;
+	}
+
+	DCTL_data = dctl_cqr->data;
+
+	DCTL_data->subcommand = 0x02;	/* Inhibit Write */
+	DCTL_data->modifier = modifier;
+
+	ccw = dctl_cqr->cpaddr;
+	memset(ccw, 0, sizeof (struct ccw1));
+	ccw->cmd_code = CCW_CMD_DCTL;
+	ccw->count = 4;
+	ccw->cda = (__u32)(addr_t) DCTL_data;
+	dctl_cqr->function = dasd_3990_erp_DCTL;
+	dctl_cqr->refers = erp;
+	dctl_cqr->device = erp->device;
+	dctl_cqr->magic = erp->magic;
+	dctl_cqr->expires = 5 * 60 * HZ;
+	dctl_cqr->retries = 2;
+
+	dctl_cqr->buildclk = get_clock();
+
+	dctl_cqr->status = DASD_CQR_FILLED;
+
+	return dctl_cqr;
+
+}				/* end dasd_3990_erp_DCTL */
+
+/*
+ * DASD_3990_ERP_ACTION_1 
+ *
+ * DESCRIPTION
+ *   Setup ERP to do the ERP action 1 (see Reference manual).
+ *   Repeat the operation on a different channel path.
+ *   If all alternate paths have been tried, the request is posted with a
+ *   permanent error.
+ *   Note: duplex handling is not implemented (yet).
+ *
+ *  PARAMETER
+ *   erp		pointer to the current ERP
+ *
+ * RETURN VALUES
+ *   erp		pointer to the ERP
+ *
+ */
+static struct dasd_ccw_req *
+dasd_3990_erp_action_1(struct dasd_ccw_req * erp)
+{
+
+	erp->function = dasd_3990_erp_action_1;
+
+	dasd_3990_erp_alternate_path(erp);
+
+	return erp;
+
+}				/* end dasd_3990_erp_action_1 */
+
+/*
+ * DASD_3990_ERP_ACTION_4 
+ *
+ * DESCRIPTION
+ *   Setup ERP to do the ERP action 4 (see Reference manual).
+ *   Set the current request to PENDING to block the CQR queue for that device
+ *   until the state change interrupt appears.
+ *   Use a timer (20 seconds) to retry the cqr if the interrupt is still
+ *   missing.
+ *
+ *  PARAMETER
+ *   sense		sense data of the actual error
+ *   erp		pointer to the current ERP
+ *
+ * RETURN VALUES
+ *   erp		pointer to the ERP
+ *
+ */
+static struct dasd_ccw_req *
+dasd_3990_erp_action_4(struct dasd_ccw_req * erp, char *sense)
+{
+
+	struct dasd_device *device = erp->device;
+
+	/* first time set initial retry counter and erp_function    */
+	/* and retry once without waiting for state change pending  */
+	/* interrupt (this enables easier enqueing of the cqr)	    */
+	if (erp->function != dasd_3990_erp_action_4) {
+
+		DEV_MESSAGE(KERN_INFO, device, "%s",
+			    "dasd_3990_erp_action_4: first time retry");
+
+		erp->retries = 256;
+		erp->function = dasd_3990_erp_action_4;
+
+	} else {
+
+		if (sense[25] == 0x1D) {	/* state change pending */
+
+			DEV_MESSAGE(KERN_INFO, device, 
+				    "waiting for state change pending "
+				    "interrupt, %d retries left",
+				    erp->retries);
+			
+			dasd_3990_erp_block_queue(erp, 30*HZ);
+
+                } else if (sense[25] == 0x1E) {	/* busy */
+			DEV_MESSAGE(KERN_INFO, device,
+				    "busy - redriving request later, "
+				    "%d retries left",
+				    erp->retries);
+                        dasd_3990_erp_block_queue(erp, HZ);
+		} else {
+
+			/* no state change pending - retry */
+			DEV_MESSAGE (KERN_INFO, device, 
+				     "redriving request immediately, "
+				     "%d retries left", 
+				     erp->retries);
+			erp->status = DASD_CQR_QUEUED;
+		}
+	}
+
+	return erp;
+
+}				/* end dasd_3990_erp_action_4 */
+
+/*
+ ***************************************************************************** 
+ * 24 byte sense ERP functions (only)
+ ***************************************************************************** 
+ */
+
+/*
+ * DASD_3990_ERP_ACTION_5 
+ *
+ * DESCRIPTION
+ *   Setup ERP to do the ERP action 5 (see Reference manual).
+ *   NOTE: Further handling is done in xxx_further_erp after the retries.
+ *
+ *  PARAMETER
+ *   erp		pointer to the current ERP
+ *
+ * RETURN VALUES
+ *   erp		pointer to the ERP
+ *
+ */
+static struct dasd_ccw_req *
+dasd_3990_erp_action_5(struct dasd_ccw_req * erp)
+{
+
+	/* first of all retry */
+	erp->retries = 10;
+	erp->function = dasd_3990_erp_action_5;
+
+	return erp;
+
+}				/* end dasd_3990_erp_action_5 */
+
+/*
+ * DASD_3990_HANDLE_ENV_DATA
+ *
+ * DESCRIPTION
+ *   Handles 24 byte 'Environmental data present'.
+ *   Does a analysis of the sense data (message Format)
+ *   and prints the error messages.
+ *
+ * PARAMETER
+ *   sense		current sense data
+ *   
+ * RETURN VALUES
+ *   void
+ */
+static void
+dasd_3990_handle_env_data(struct dasd_ccw_req * erp, char *sense)
+{
+
+	struct dasd_device *device = erp->device;
+	char msg_format = (sense[7] & 0xF0);
+	char msg_no = (sense[7] & 0x0F);
+
+	switch (msg_format) {
+	case 0x00:		/* Format 0 - Program or System Checks */
+
+		if (sense[1] & 0x10) {	/* check message to operator bit */
+
+			switch (msg_no) {
+			case 0x00:	/* No Message */
+				break;
+			case 0x01:
+				DEV_MESSAGE(KERN_WARNING, device, "%s",
+					    "FORMAT 0 - Invalid Command");
+				break;
+			case 0x02:
+				DEV_MESSAGE(KERN_WARNING, device, "%s",
+					    "FORMAT 0 - Invalid Command "
+					    "Sequence");
+				break;
+			case 0x03:
+				DEV_MESSAGE(KERN_WARNING, device, "%s",
+					    "FORMAT 0 - CCW Count less than "
+					    "required");
+				break;
+			case 0x04:
+				DEV_MESSAGE(KERN_WARNING, device, "%s",
+					    "FORMAT 0 - Invalid Parameter");
+				break;
+			case 0x05:
+				DEV_MESSAGE(KERN_WARNING, device, "%s",
+					    "FORMAT 0 - Diagnostic of Sepecial"
+					    " Command Violates File Mask");
+				break;
+			case 0x07:
+				DEV_MESSAGE(KERN_WARNING, device, "%s",
+					    "FORMAT 0 - Channel Returned with "
+					    "Incorrect retry CCW");
+				break;
+			case 0x08:
+				DEV_MESSAGE(KERN_WARNING, device, "%s",
+					    "FORMAT 0 - Reset Notification");
+				break;
+			case 0x09:
+				DEV_MESSAGE(KERN_WARNING, device, "%s",
+					    "FORMAT 0 - Storage Path Restart");
+				break;
+			case 0x0A:
+				DEV_MESSAGE(KERN_WARNING, device,
+					    "FORMAT 0 - Channel requested "
+					    "... %02x", sense[8]);
+				break;
+			case 0x0B:
+				DEV_MESSAGE(KERN_WARNING, device, "%s",
+					    "FORMAT 0 - Invalid Defective/"
+					    "Alternate Track Pointer");
+				break;
+			case 0x0C:
+				DEV_MESSAGE(KERN_WARNING, device, "%s",
+					    "FORMAT 0 - DPS Installation "
+					    "Check");
+				break;
+			case 0x0E:
+				DEV_MESSAGE(KERN_WARNING, device, "%s",
+					    "FORMAT 0 - Command Invalid on "
+					    "Secondary Address");
+				break;
+			case 0x0F:
+				DEV_MESSAGE(KERN_WARNING, device,
+					    "FORMAT 0 - Status Not As "
+					    "Required: reason %02x", sense[8]);
+				break;
+			default:
+				DEV_MESSAGE(KERN_WARNING, device, "%s",
+					    "FORMAT 0 - Reseved");
+			}
+		} else {
+			switch (msg_no) {
+			case 0x00:	/* No Message */
+				break;
+			case 0x01:
+				DEV_MESSAGE(KERN_WARNING, device, "%s",
+					    "FORMAT 0 - Device Error Source");
+				break;
+			case 0x02:
+				DEV_MESSAGE(KERN_WARNING, device, "%s",
+					    "FORMAT 0 - Reserved");
+				break;
+			case 0x03:
+				DEV_MESSAGE(KERN_WARNING, device,
+					    "FORMAT 0 - Device Fenced - "
+					    "device = %02x", sense[4]);
+				break;
+			case 0x04:
+				DEV_MESSAGE(KERN_WARNING, device, "%s",
+					    "FORMAT 0 - Data Pinned for "
+					    "Device");
+				break;
+			default:
+				DEV_MESSAGE(KERN_WARNING, device, "%s",
+					    "FORMAT 0 - Reserved");
+			}
+		}
+		break;
+
+	case 0x10:		/* Format 1 - Device Equipment Checks */
+		switch (msg_no) {
+		case 0x00:	/* No Message */
+			break;
+		case 0x01:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 1 - Device Status 1 not as "
+				    "expected");
+			break;
+		case 0x03:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 1 - Index missing");
+			break;
+		case 0x04:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 1 - Interruption cannot be reset");
+			break;
+		case 0x05:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 1 - Device did not respond to "
+				    "selection");
+			break;
+		case 0x06:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 1 - Device check-2 error or Set "
+				    "Sector is not complete");
+			break;
+		case 0x07:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 1 - Head address does not "
+				    "compare");
+			break;
+		case 0x08:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 1 - Device status 1 not valid");
+			break;
+		case 0x09:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 1 - Device not ready");
+			break;
+		case 0x0A:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 1 - Track physical address did "
+				    "not compare");
+			break;
+		case 0x0B:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 1 - Missing device address bit");
+			break;
+		case 0x0C:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 1 - Drive motor switch is off");
+			break;
+		case 0x0D:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 1 - Seek incomplete");
+			break;
+		case 0x0E:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 1 - Cylinder address did not "
+				    "compare");
+			break;
+		case 0x0F:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 1 - Offset active cannot be "
+				    "reset");
+			break;
+		default:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 1 - Reserved");
+		}
+		break;
+
+	case 0x20:		/* Format 2 - 3990 Equipment Checks */
+		switch (msg_no) {
+		case 0x08:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 2 - 3990 check-2 error");
+			break;
+		case 0x0E:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 2 - Support facility errors");
+			break;
+		case 0x0F:
+			DEV_MESSAGE(KERN_WARNING, device,
+				    "FORMAT 2 - Microcode detected error %02x",
+				    sense[8]);
+			break;
+		default:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 2 - Reserved");
+		}
+		break;
+
+	case 0x30:		/* Format 3 - 3990 Control Checks */
+		switch (msg_no) {
+		case 0x0F:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 3 - Allegiance terminated");
+			break;
+		default:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 3 - Reserved");
+		}
+		break;
+
+	case 0x40:		/* Format 4 - Data Checks */
+		switch (msg_no) {
+		case 0x00:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 4 - Home address area error");
+			break;
+		case 0x01:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 4 - Count area error");
+			break;
+		case 0x02:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 4 - Key area error");
+			break;
+		case 0x03:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 4 - Data area error");
+			break;
+		case 0x04:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 4 - No sync byte in home address "
+				    "area");
+			break;
+		case 0x05:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 4 - No sync byte in count address "
+				    "area");
+			break;
+		case 0x06:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 4 - No sync byte in key area");
+			break;
+		case 0x07:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 4 - No sync byte in data area");
+			break;
+		case 0x08:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 4 - Home address area error; "
+				    "offset active");
+			break;
+		case 0x09:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 4 - Count area error; offset "
+				    "active");
+			break;
+		case 0x0A:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 4 - Key area error; offset "
+				    "active");
+			break;
+		case 0x0B:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 4 - Data area error; "
+				    "offset active");
+			break;
+		case 0x0C:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 4 - No sync byte in home "
+				    "address area; offset active");
+			break;
+		case 0x0D:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 4 - No syn byte in count "
+				    "address area; offset active");
+			break;
+		case 0x0E:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 4 - No sync byte in key area; "
+				    "offset active");
+			break;
+		case 0x0F:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 4 - No syn byte in data area; "
+				    "offset active");
+			break;
+		default:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 4 - Reserved");
+		}
+		break;
+
+	case 0x50:  /* Format 5 - Data Check with displacement information */
+		switch (msg_no) {
+		case 0x00:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 5 - Data Check in the "
+				    "home address area");
+			break;
+		case 0x01:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 5 - Data Check in the count area");
+			break;
+		case 0x02:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 5 - Data Check in the key area");
+			break;
+		case 0x03:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 5 - Data Check in the data area");
+			break;
+		case 0x08:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 5 - Data Check in the "
+				    "home address area; offset active");
+			break;
+		case 0x09:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 5 - Data Check in the count area; "
+				    "offset active");
+			break;
+		case 0x0A:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 5 - Data Check in the key area; "
+				    "offset active");
+			break;
+		case 0x0B:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 5 - Data Check in the data area; "
+				    "offset active");
+			break;
+		default:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 5 - Reserved");
+		}
+		break;
+
+	case 0x60:  /* Format 6 - Usage Statistics/Overrun Errors */
+		switch (msg_no) {
+		case 0x00:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 6 - Overrun on channel A");
+			break;
+		case 0x01:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 6 - Overrun on channel B");
+			break;
+		case 0x02:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 6 - Overrun on channel C");
+			break;
+		case 0x03:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 6 - Overrun on channel D");
+			break;
+		case 0x04:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 6 - Overrun on channel E");
+			break;
+		case 0x05:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 6 - Overrun on channel F");
+			break;
+		case 0x06:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 6 - Overrun on channel G");
+			break;
+		case 0x07:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 6 - Overrun on channel H");
+			break;
+		default:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 6 - Reserved");
+		}
+		break;
+
+	case 0x70:  /* Format 7 - Device Connection Control Checks */
+		switch (msg_no) {
+		case 0x00:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 7 - RCC initiated by a connection "
+				    "check alert");
+			break;
+		case 0x01:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 7 - RCC 1 sequence not "
+				    "successful");
+			break;
+		case 0x02:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 7 - RCC 1 and RCC 2 sequences not "
+				    "successful");
+			break;
+		case 0x03:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 7 - Invalid tag-in during "
+				    "selection sequence");
+			break;
+		case 0x04:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 7 - extra RCC required");
+			break;
+		case 0x05:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 7 - Invalid DCC selection "
+				    "response or timeout");
+			break;
+		case 0x06:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 7 - Missing end operation; device "
+				    "transfer complete");
+			break;
+		case 0x07:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 7 - Missing end operation; device "
+				    "transfer incomplete");
+			break;
+		case 0x08:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 7 - Invalid tag-in for an "
+				    "immediate command sequence");
+			break;
+		case 0x09:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 7 - Invalid tag-in for an "
+				    "extended command sequence");
+			break;
+		case 0x0A:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 7 - 3990 microcode time out when "
+				    "stopping selection");
+			break;
+		case 0x0B:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 7 - No response to selection "
+				    "after a poll interruption");
+			break;
+		case 0x0C:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 7 - Permanent path error (DASD "
+				    "controller not available)");
+			break;
+		case 0x0D:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 7 - DASD controller not available"
+				    " on disconnected command chain");
+			break;
+		default:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 7 - Reserved");
+		}
+		break;
+
+	case 0x80:  /* Format 8 - Additional Device Equipment Checks */
+		switch (msg_no) {
+		case 0x00:	/* No Message */
+		case 0x01:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 8 - Error correction code "
+				    "hardware fault");
+			break;
+		case 0x03:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 8 - Unexpected end operation "
+				    "response code");
+			break;
+		case 0x04:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 8 - End operation with transfer "
+				    "count not zero");
+			break;
+		case 0x05:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 8 - End operation with transfer "
+				    "count zero");
+			break;
+		case 0x06:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 8 - DPS checks after a system "
+				    "reset or selective reset");
+			break;
+		case 0x07:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 8 - DPS cannot be filled");
+			break;
+		case 0x08:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 8 - Short busy time-out during "
+				    "device selection");
+			break;
+		case 0x09:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 8 - DASD controller failed to "
+				    "set or reset the long busy latch");
+			break;
+		case 0x0A:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 8 - No interruption from device "
+				    "during a command chain");
+			break;
+		default:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 8 - Reserved");
+		}
+		break;
+
+	case 0x90:  /* Format 9 - Device Read, Write, and Seek Checks */
+		switch (msg_no) {
+		case 0x00:
+			break;	/* No Message */
+		case 0x06:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 9 - Device check-2 error");
+			break;
+		case 0x07:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 9 - Head address did not compare");
+			break;
+		case 0x0A:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 9 - Track physical address did "
+				    "not compare while oriented");
+			break;
+		case 0x0E:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 9 - Cylinder address did not "
+				    "compare");
+			break;
+		default:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT 9 - Reserved");
+		}
+		break;
+
+	case 0xF0:		/* Format F - Cache Storage Checks */
+		switch (msg_no) {
+		case 0x00:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT F - Operation Terminated");
+			break;
+		case 0x01:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT F - Subsystem Processing Error");
+			break;
+		case 0x02:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT F - Cache or nonvolatile storage "
+				    "equipment failure");
+			break;
+		case 0x04:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT F - Caching terminated");
+			break;
+		case 0x06:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT F - Cache fast write access not "
+				    "authorized");
+			break;
+		case 0x07:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT F - Track format incorrect");
+			break;
+		case 0x09:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT F - Caching reinitiated");
+			break;
+		case 0x0A:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT F - Nonvolatile storage "
+				    "terminated");
+			break;
+		case 0x0B:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT F - Volume is suspended duplex");
+			break;
+		case 0x0C:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT F - Subsystem status connot be "
+				    "determined");
+			break;
+		case 0x0D:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT F - Caching status reset to "
+				    "default");
+			break;
+		case 0x0E:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT F - DASD Fast Write inhibited");
+			break;
+		default:
+			DEV_MESSAGE(KERN_WARNING, device, "%s",
+				    "FORMAT D - Reserved");
+		}
+		break;
+
+	default:	/* unknown message format - should not happen */
+	        DEV_MESSAGE (KERN_WARNING, device,
+                             "unknown message format %02x",
+                             msg_format);
+		break;
+	}			/* end switch message format */
+
+}				/* end dasd_3990_handle_env_data */
+
+/*
+ * DASD_3990_ERP_COM_REJ
+ *
+ * DESCRIPTION
+ *   Handles 24 byte 'Command Reject' error.
+ *
+ * PARAMETER
+ *   erp		current erp_head
+ *   sense		current sense data
+ * 
+ * RETURN VALUES
+ *   erp		'new' erp_head - pointer to new ERP 
+ */
+static struct dasd_ccw_req *
+dasd_3990_erp_com_rej(struct dasd_ccw_req * erp, char *sense)
+{
+
+	struct dasd_device *device = erp->device;
+
+	erp->function = dasd_3990_erp_com_rej;
+
+	/* env data present (ACTION 10 - retry should work) */
+	if (sense[2] & SNS2_ENV_DATA_PRESENT) {
+
+		DEV_MESSAGE(KERN_DEBUG, device, "%s",
+			    "Command Reject - environmental data present");
+
+		dasd_3990_handle_env_data(erp, sense);
+
+		erp->retries = 5;
+
+	} else {
+		/* fatal error -  set status to FAILED */
+		DEV_MESSAGE(KERN_ERR, device, "%s",
+			    "Command Reject - Fatal error");
+
+		erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED);
+	}
+
+	return erp;
+
+}				/* end dasd_3990_erp_com_rej */
+
+/*
+ * DASD_3990_ERP_BUS_OUT 
+ *