From: Martin Schwidefsky <schwidefsky@de.ibm.com>
To: linux-kernel@vger.kernel.org, torvalds@transmeta.com
Subject: [PATCH] 2.5.43 s390 (6/6): dasd stuff.
Date: Wed, 16 Oct 2002 18:49:04 +0200 [thread overview]
Message-ID: <200210161849.04773.schwidefsky@de.ibm.com> (raw)
Add module license statements to dasd driver. Add XRC support. Fix possible
endless loop in dasd_term_IO and check range of device numbers.
diff -urN linux-2.5.43/drivers/s390/block/dasd.c linux-2.5.43-s390/drivers/s390/block/dasd.c
--- linux-2.5.43/drivers/s390/block/dasd.c Wed Oct 16 05:27:57 2002
+++ linux-2.5.43-s390/drivers/s390/block/dasd.c Wed Oct 16 17:54:15 2002
@@ -80,6 +82,7 @@
MODULE_SUPPORTED_DEVICE("dasd");
MODULE_PARM(dasd, "1-" __MODULE_STRING(256) "s");
MODULE_PARM(dasd_disciplines, "1-" __MODULE_STRING(8) "s");
+MODULE_LICENSE("GPL");
/*
* SECTION: prototypes for static functions of dasd.c
@@ -1190,6 +1196,7 @@
BUG();
break;
}
+ retries++;
}
dasd_schedule_bh(device);
return rc;
@@ -1554,7 +1567,7 @@
goto restart;
}
- /* Rechain request on device device request queue */
+ /* Rechain finished requests to final queue */
cqr->endclk = get_clock();
list_move_tail(&cqr->list, final_queue);
}
@@ -1641,7 +1654,7 @@
/*
* Take a look at the first request on the ccw queue and check
- * if it reached its expire time.
+ * if it reached its expire time. If so, terminate the IO.
*/
static inline void
__dasd_check_expire(dasd_device_t * device)
@@ -1766,7 +1779,7 @@
}
/*
- * Schedules a call to dasd_process_queues over the device tasklet.
+ * Schedules a call to dasd_tasklet over the device tasklet.
*/
void
dasd_schedule_bh(dasd_device_t * device)
diff -urN linux-2.5.43/drivers/s390/block/dasd_3990_erp.c linux-2.5.43-s390/drivers/s390/block/dasd_3990_erp.c
--- linux-2.5.43/drivers/s390/block/dasd_3990_erp.c Wed Oct 16 05:28:34 2002
+++ linux-2.5.43-s390/drivers/s390/block/dasd_3990_erp.c Wed Oct 16 17:54:15 2002
@@ -1122,6 +1124,9 @@
break;
default: /* unknown message format - should not happen */
+ DEV_MESSAGE (KERN_WARNING, device,
+ "unknown message format %02x",
+ msg_format);
break;
} /* end switch message format */
diff -urN linux-2.5.43/drivers/s390/block/dasd_devmap.c linux-2.5.43-s390/drivers/s390/block/dasd_devmap.c
--- linux-2.5.43/drivers/s390/block/dasd_devmap.c Wed Oct 16 05:28:22 2002
+++ linux-2.5.43-s390/drivers/s390/block/dasd_devmap.c Wed Oct 16 17:54:15 2002
@@ -87,6 +90,8 @@
int
dasd_devno(char *str, char **endp)
{
+ int val;
+
/* remove leading '0x' */
if (*str == '0') {
str++;
@@ -96,7 +101,10 @@
/* We require at least one hex digit */
if (!isxdigit(*str))
return -EINVAL;
- return simple_strtoul(str, endp, 16);
+ val = simple_strtoul(str, endp, 16);
+ if ((val > 0xFFFF) || (val < 0))
+ return -EINVAL;
+ return val;
}
/*
diff -urN linux-2.5.43/drivers/s390/block/dasd_diag.c linux-2.5.43-s390/drivers/s390/block/dasd_diag.c
--- linux-2.5.43/drivers/s390/block/dasd_diag.c Wed Oct 16 05:27:09 2002
+++ linux-2.5.43-s390/drivers/s390/block/dasd_diag.c Wed Oct 16 17:54:15 2002
@@ -40,6 +42,8 @@
#endif /* PRINTK_HEADER */
#define PRINTK_HEADER "dasd(diag):"
+MODULE_LICENSE("GPL");
+
static dasd_discipline_t dasd_diag_discipline;
typedef struct dasd_diag_private_t {
diff -urN linux-2.5.43/drivers/s390/block/dasd_eckd.c linux-2.5.43-s390/drivers/s390/block/dasd_eckd.c
--- linux-2.5.43/drivers/s390/block/dasd_eckd.c Wed Oct 16 05:27:07 2002
+++ linux-2.5.43-s390/drivers/s390/block/dasd_eckd.c Wed Oct 16 17:54:15 2002
@@ -59,6 +61,8 @@
#define ECKD_F7(i) (i->factor7)
#define ECKD_F8(i) (i->factor8)
+MODULE_LICENSE("GPL");
+
static dasd_discipline_t dasd_eckd_discipline;
typedef struct dasd_eckd_private_t {
@@ -183,6 +187,31 @@
}
static inline void
+check_XRC (ccw1_t *de_ccw,
+ DE_eckd_data_t *data,
+ dasd_device_t *device)
+{
+ dasd_eckd_private_t *private;
+
+ private = (dasd_eckd_private_t *) device->private;
+
+ /* switch on System Time Stamp - needed for XRC Support */
+ if (private->rdc_data.facilities.XRC_supported) {
+
+ data->ga_extended |= 0x08; /* switch on 'Time Stamp Valid' */
+ data->ga_extended |= 0x02; /* switch on 'Extended Parameter' */
+
+ data->ep_sys_time = get_clock ();
+
+ de_ccw->count = sizeof (DE_eckd_data_t);
+ de_ccw->flags = CCW_FLAG_SLI;
+ }
+
+ return;
+
+} /* end check_XRC */
+
+static inline void
define_extent(ccw1_t * ccw, DE_eckd_data_t * data, int trk, int totrk,
int cmd, dasd_device_t * device)
{
@@ -216,10 +245,12 @@
case DASD_ECKD_CCW_WRITE_KD_MT:
data->mask.perm = 0x02;
data->attributes.operation = private->attrib.operation;
+ check_XRC (ccw, data, device);
break;
case DASD_ECKD_CCW_WRITE_CKD:
case DASD_ECKD_CCW_WRITE_CKD_MT:
data->attributes.operation = DASD_BYPASS_CACHE;
+ check_XRC (ccw, data, device);
break;
case DASD_ECKD_CCW_ERASE:
case DASD_ECKD_CCW_WRITE_HOME_ADDRESS:
@@ -227,6 +258,7 @@
data->mask.perm = 0x3;
data->mask.auth = 0x1;
data->attributes.operation = DASD_BYPASS_CACHE;
+ check_XRC (ccw, data, device);
break;
default:
MESSAGE(KERN_ERR, "unknown opcode 0x%x", cmd);
@@ -497,6 +529,11 @@
private->rdc_data.cu_type,
private->rdc_data.cu_model.model);
return 0;
+
+ /* get characteristis via diag to determine the kind of minidisk under VM */
+ /* needed beacause XRC is not support by VM (jet) */
+ /* Can be removed as soon as VM supports XRC */
+ // TBD ??? HUM
}
static int
@@ -563,6 +600,7 @@
cqr->device = device;
cqr->retries = 0;
+ cqr->buildclk = get_clock();
cqr->status = DASD_CQR_FILLED;
return cqr;
}
@@ -881,6 +919,7 @@
}
fcp->device = device;
fcp->retries = 2; /* set retry counter to enable ERP */
+ fcp->buildclk = get_clock();
fcp->status = DASD_CQR_FILLED;
return fcp;
}
@@ -1119,6 +1158,7 @@
cqr->device = device;
cqr->retries = 0;
cqr->expires = 10 * HZ;
+ cqr->buildclk = get_clock();
cqr->status = DASD_CQR_FILLED;
rc = dasd_sleep_on_immediatly(cqr);
@@ -1163,6 +1203,7 @@
cqr->device = device;
cqr->retries = 0;
cqr->expires = 10 * HZ;
+ cqr->buildclk = get_clock();
cqr->status = DASD_CQR_FILLED;
rc = dasd_sleep_on_immediatly(cqr);
@@ -1209,6 +1250,7 @@
cqr->device = device;
cqr->retries = 0;
cqr->expires = 10 * HZ;
+ cqr->buildclk = get_clock();
cqr->status = DASD_CQR_FILLED;
rc = dasd_sleep_on_immediatly(cqr);
@@ -1277,6 +1319,7 @@
ccw->count = sizeof (dasd_rssd_perf_stats_t);
ccw->cda = (__u32)(addr_t) stats;
+ cqr->buildclk = get_clock();
cqr->status = DASD_CQR_FILLED;
rc = dasd_sleep_on(cqr);
if (rc == 0) {
diff -urN linux-2.5.43/drivers/s390/block/dasd_eckd.h linux-2.5.43-s390/drivers/s390/block/dasd_eckd.h
--- linux-2.5.43/drivers/s390/block/dasd_eckd.h Wed Oct 16 05:27:54 2002
+++ linux-2.5.43-s390/drivers/s390/block/dasd_eckd.h Wed Oct 16 17:54:15 2002
@@ -1,3 +1,16 @@
+/*
+ * File...........: linux/drivers/s390/block/dasd_eckd.h
+ * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
+ * Horst Hummel <Horst.Hummel@de.ibm.com>
+ * Bugreports.to..: <Linux390@de.ibm.com>
+ * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
+ *
+ * $Revision: 1.4 $
+ *
+ * History of changes
+ *
+ */
+
#ifndef DASD_ECKD_H
#define DASD_ECKD_H
@@ -102,6 +115,10 @@
__u8 ga_extended; /* Global Attributes Extended */
ch_t beg_ext;
ch_t end_ext;
+ unsigned long long ep_sys_time; /* Extended Parameter - System Time Stamp */
+ __u8 ep_format; /* Extended Parameter format byte */
+ __u8 ep_prio; /* Extended Parameter priority I/O byte */
+ __u8 ep_reserved[6]; /* Extended Parameter Reserved */
} __attribute__ ((packed)) DE_eckd_data_t;
typedef struct LO_eckd_data_t {
@@ -141,7 +158,8 @@
unsigned char reserved2:4;
unsigned char reserved3:8;
unsigned char defect_wr:1;
- unsigned char reserved4:2;
+ unsigned char XRC_supported:1;
+ unsigned char reserved4:1;
unsigned char striping:1;
unsigned char reserved5:4;
unsigned char cfw:1;
diff -urN linux-2.5.43/drivers/s390/block/dasd_fba.c linux-2.5.43-s390/drivers/s390/block/dasd_fba.c
--- linux-2.5.43/drivers/s390/block/dasd_fba.c Wed Oct 16 05:28:28 2002
+++ linux-2.5.43-s390/drivers/s390/block/dasd_fba.c Wed Oct 16 17:54:15 2002
@@ -38,6 +41,8 @@
#define DASD_FBA_CCW_LOCATE 0x43
#define DASD_FBA_CCW_DEFINE_EXTENT 0x63
+MODULE_LICENSE("GPL");
+
static dasd_discipline_t dasd_fba_discipline;
typedef struct dasd_fba_private_t {
diff -urN linux-2.5.43/drivers/s390/block/dasd_proc.c linux-2.5.43-s390/drivers/s390/block/dasd_proc.c
--- linux-2.5.43/drivers/s390/block/dasd_proc.c Wed Oct 16 05:27:20 2002
+++ linux-2.5.43-s390/drivers/s390/block/dasd_proc.c Wed Oct 16 17:54:15 2002
@@ -195,10 +198,7 @@
break;
case DASD_STATE_READY:
case DASD_STATE_ONLINE:
- if (device->state < DASD_STATE_ONLINE)
- len += sprintf(str + len, "fenced ");
- else
- len += sprintf(str + len, "active ");
+ len += sprintf(str + len, "active ");
if (dasd_check_blocksize(device->bp_block))
len += sprintf(str + len, "n/f ");
else
diff -urN linux-2.5.43/include/asm-s390/dasd.h linux-2.5.43-s390/include/asm-s390/dasd.h
--- linux-2.5.43/include/asm-s390/dasd.h Wed Oct 16 05:27:18 2002
+++ linux-2.5.43-s390/include/asm-s390/dasd.h Wed Oct 16 17:54:15 2002
@@ -8,6 +8,8 @@
* any future changes wrt the API will result in a change of the APIVERSION reported
* to userspace by the DASDAPIVER-ioctl
*
+ * $Revision: 1.3 $
+ *
* History of changes (starts July 2000)
* 05/04/01 created by moving the kernel interface to drivers/s390/block/dasd_int.h
* 12/06/01 DASD_API_VERSION 2 - binary compatible to 0 (new BIODASDINFO2)
@@ -224,8 +226,6 @@
#define BIODASDSLCK _IO(DASD_IOCTL_LETTER,4) /* steal lock */
/* reset profiling information of a device */
#define BIODASDPRRST _IO(DASD_IOCTL_LETTER,5)
-/* enable PAV */
-#define BIODASDENAPAV _IO(DASD_IOCTL_LETTER,6)
/* retrieve API version number */
diff -urN linux-2.5.43/include/asm-s390x/dasd.h linux-2.5.43-s390/include/asm-s390x/dasd.h
--- linux-2.5.43/include/asm-s390x/dasd.h Wed Oct 16 05:27:48 2002
+++ linux-2.5.43-s390/include/asm-s390x/dasd.h Wed Oct 16 17:54:15 2002
@@ -8,6 +8,8 @@
* any future changes wrt the API will result in a change of the APIVERSION reported
* to userspace by the DASDAPIVER-ioctl
*
+ * $Revision: 1.3 $
+ *
* History of changes (starts July 2000)
* 05/04/01 created by moving the kernel interface to drivers/s390/block/dasd_int.h
* 12/06/01 DASD_API_VERSION 2 - binary compatible to 0 (new BIODASDINFO2)
@@ -224,8 +226,6 @@
#define BIODASDSLCK _IO(DASD_IOCTL_LETTER,4) /* steal lock */
/* reset profiling information of a device */
#define BIODASDPRRST _IO(DASD_IOCTL_LETTER,5)
-/* enable PAV */
-#define BIODASDENAPAV _IO(DASD_IOCTL_LETTER,6)
/* retrieve API version number */
reply other threads:[~2002-10-16 16:47 UTC|newest]
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