summaryrefslogtreecommitdiffstats
path: root/drivers/s390/block
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/s390/block')
-rw-r--r--drivers/s390/block/dasd_devmap.c44
-rw-r--r--drivers/s390/block/dasd_diag.c6
-rw-r--r--drivers/s390/block/dasd_eckd.c21
-rw-r--r--drivers/s390/block/dasd_eckd.h7
-rw-r--r--drivers/s390/block/dasd_fba.c4
-rw-r--r--drivers/s390/block/dasd_int.h8
6 files changed, 81 insertions, 9 deletions
diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c
index bed7b4634cc..8d41f3ed38d 100644
--- a/drivers/s390/block/dasd_devmap.c
+++ b/drivers/s390/block/dasd_devmap.c
@@ -1083,6 +1083,49 @@ dasd_eer_store(struct device *dev, struct device_attribute *attr,
static DEVICE_ATTR(eer_enabled, 0644, dasd_eer_show, dasd_eer_store);
+/*
+ * expiration time for default requests
+ */
+static ssize_t
+dasd_expires_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct dasd_device *device;
+ int len;
+
+ device = dasd_device_from_cdev(to_ccwdev(dev));
+ if (IS_ERR(device))
+ return -ENODEV;
+ len = snprintf(buf, PAGE_SIZE, "%lu\n", device->default_expires);
+ dasd_put_device(device);
+ return len;
+}
+
+static ssize_t
+dasd_expires_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct dasd_device *device;
+ unsigned long val;
+
+ device = dasd_device_from_cdev(to_ccwdev(dev));
+ if (IS_ERR(device))
+ return -ENODEV;
+
+ if ((strict_strtoul(buf, 10, &val) != 0) ||
+ (val > DASD_EXPIRES_MAX) || val == 0) {
+ dasd_put_device(device);
+ return -EINVAL;
+ }
+
+ if (val)
+ device->default_expires = val;
+
+ dasd_put_device(device);
+ return count;
+}
+
+static DEVICE_ATTR(expires, 0644, dasd_expires_show, dasd_expires_store);
+
static struct attribute * dasd_attrs[] = {
&dev_attr_readonly.attr,
&dev_attr_discipline.attr,
@@ -1094,6 +1137,7 @@ static struct attribute * dasd_attrs[] = {
&dev_attr_eer_enabled.attr,
&dev_attr_erplog.attr,
&dev_attr_failfast.attr,
+ &dev_attr_expires.attr,
NULL,
};
diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c
index 687f323cdc3..2b3bc3ec054 100644
--- a/drivers/s390/block/dasd_diag.c
+++ b/drivers/s390/block/dasd_diag.c
@@ -43,7 +43,7 @@ MODULE_LICENSE("GPL");
sizeof(struct dasd_diag_req)) / \
sizeof(struct dasd_diag_bio)) / 2)
#define DIAG_MAX_RETRIES 32
-#define DIAG_TIMEOUT 50 * HZ
+#define DIAG_TIMEOUT 50
static struct dasd_discipline dasd_diag_discipline;
@@ -360,6 +360,8 @@ dasd_diag_check_device(struct dasd_device *device)
goto out;
}
+ device->default_expires = DIAG_TIMEOUT;
+
/* Figure out position of label block */
switch (private->rdc_data.vdev_class) {
case DEV_CLASS_FBA:
@@ -563,7 +565,7 @@ static struct dasd_ccw_req *dasd_diag_build_cp(struct dasd_device *memdev,
cqr->startdev = memdev;
cqr->memdev = memdev;
cqr->block = block;
- cqr->expires = DIAG_TIMEOUT;
+ cqr->expires = memdev->default_expires * HZ;
cqr->status = DASD_CQR_FILLED;
return cqr;
}
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index 0483b2e76b1..66360c24bd4 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -1115,8 +1115,9 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
struct dasd_eckd_private *private;
struct dasd_block *block;
struct dasd_uid temp_uid;
- int is_known, rc;
+ int is_known, rc, i;
int readonly;
+ unsigned long value;
if (!ccw_device_is_pathgroup(device->cdev)) {
dev_warn(&device->cdev->dev,
@@ -1151,6 +1152,18 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
if (rc)
goto out_err1;
+ /* set default timeout */
+ device->default_expires = DASD_EXPIRES;
+ if (private->gneq) {
+ value = 1;
+ for (i = 0; i < private->gneq->timeout.value; i++)
+ value = 10 * value;
+ value = value * private->gneq->timeout.number;
+ /* do not accept useless values */
+ if (value != 0 && value <= DASD_EXPIRES_MAX)
+ device->default_expires = value;
+ }
+
/* Generate device unique id */
rc = dasd_eckd_generate_uid(device);
if (rc)
@@ -1981,7 +1994,7 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_single(
cqr->startdev = startdev;
cqr->memdev = startdev;
cqr->block = block;
- cqr->expires = 5 * 60 * HZ; /* 5 minutes */
+ cqr->expires = startdev->default_expires * HZ; /* default 5 minutes */
cqr->lpm = private->path_data.ppm;
cqr->retries = 256;
cqr->buildclk = get_clock();
@@ -2158,7 +2171,7 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_track(
cqr->startdev = startdev;
cqr->memdev = startdev;
cqr->block = block;
- cqr->expires = 5 * 60 * HZ; /* 5 minutes */
+ cqr->expires = startdev->default_expires * HZ; /* default 5 minutes */
cqr->lpm = private->path_data.ppm;
cqr->retries = 256;
cqr->buildclk = get_clock();
@@ -2406,7 +2419,7 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_tpm_track(
cqr->startdev = startdev;
cqr->memdev = startdev;
cqr->block = block;
- cqr->expires = 5 * 60 * HZ; /* 5 minutes */
+ cqr->expires = startdev->default_expires * HZ; /* default 5 minutes */
cqr->lpm = private->path_data.ppm;
cqr->retries = 256;
cqr->buildclk = get_clock();
diff --git a/drivers/s390/block/dasd_eckd.h b/drivers/s390/block/dasd_eckd.h
index dd6385a5af1..0eb49655a6c 100644
--- a/drivers/s390/block/dasd_eckd.h
+++ b/drivers/s390/block/dasd_eckd.h
@@ -320,7 +320,12 @@ struct dasd_gneq {
__u8 identifier:2;
__u8 reserved:6;
} __attribute__ ((packed)) flags;
- __u8 reserved[7];
+ __u8 reserved[5];
+ struct {
+ __u8 value:2;
+ __u8 number:6;
+ } __attribute__ ((packed)) timeout;
+ __u8 reserved3;
__u16 subsystemID;
__u8 reserved2[22];
} __attribute__ ((packed));
diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c
index 37282b90eec..bec5486e0e6 100644
--- a/drivers/s390/block/dasd_fba.c
+++ b/drivers/s390/block/dasd_fba.c
@@ -163,6 +163,8 @@ dasd_fba_check_characteristics(struct dasd_device *device)
return rc;
}
+ device->default_expires = DASD_EXPIRES;
+
readonly = dasd_device_is_ro(device);
if (readonly)
set_bit(DASD_FLAG_DEVICE_RO, &device->flags);
@@ -370,7 +372,7 @@ static struct dasd_ccw_req *dasd_fba_build_cp(struct dasd_device * memdev,
cqr->startdev = memdev;
cqr->memdev = memdev;
cqr->block = block;
- cqr->expires = 5 * 60 * HZ; /* 5 minutes */
+ cqr->expires = memdev->default_expires * HZ; /* default 5 minutes */
cqr->retries = 32;
cqr->buildclk = get_clock();
cqr->status = DASD_CQR_FILLED;
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h
index 49b431d135e..500678d7116 100644
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -186,7 +186,7 @@ struct dasd_ccw_req {
/* ... and how */
unsigned long starttime; /* jiffies time of request start */
- int expires; /* expiration period in jiffies */
+ unsigned long expires; /* expiration period in jiffies */
char lpm; /* logical path mask */
void *data; /* pointer to data area */
@@ -224,6 +224,9 @@ struct dasd_ccw_req {
#define DASD_CQR_CLEARED 0x84 /* request was cleared */
#define DASD_CQR_SUCCESS 0x85 /* request was successful */
+/* default expiration time*/
+#define DASD_EXPIRES 300
+#define DASD_EXPIRES_MAX 40000000
/* per dasd_ccw_req flags */
#define DASD_CQR_FLAGS_USE_ERP 0 /* use ERP for this request */
@@ -404,6 +407,9 @@ struct dasd_device {
/* hook for alias management */
struct list_head alias_list;
+
+ /* default expiration time in s */
+ unsigned long default_expires;
};
struct dasd_block {
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-12 16:34:48 +0000