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path: root/drivers/s390/block/dasd_eckd.c
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Diffstat (limited to 'drivers/s390/block/dasd_eckd.c')
-rw-r--r--drivers/s390/block/dasd_eckd.c54
1 files changed, 50 insertions, 4 deletions
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index cc2dd7f..fe9dacc 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -844,6 +844,30 @@ static void dasd_eckd_fill_rcd_cqr(struct dasd_device *device,
set_bit(DASD_CQR_VERIFY_PATH, &cqr->flags);
}
+/*
+ * Wakeup helper for read_conf
+ * if the cqr is not done and needs some error recovery
+ * the buffer has to be re-initialized with the EBCDIC "V1.0"
+ * to show support for virtual device SNEQ
+ */
+static void read_conf_cb(struct dasd_ccw_req *cqr, void *data)
+{
+ struct ccw1 *ccw;
+ __u8 *rcd_buffer;
+
+ if (cqr->status != DASD_CQR_DONE) {
+ ccw = cqr->cpaddr;
+ rcd_buffer = (__u8 *)((addr_t) ccw->cda);
+ memset(rcd_buffer, 0, sizeof(*rcd_buffer));
+
+ rcd_buffer[0] = 0xE5;
+ rcd_buffer[1] = 0xF1;
+ rcd_buffer[2] = 0x4B;
+ rcd_buffer[3] = 0xF0;
+ }
+ dasd_wakeup_cb(cqr, data);
+}
+
static int dasd_eckd_read_conf_immediately(struct dasd_device *device,
struct dasd_ccw_req *cqr,
__u8 *rcd_buffer,
@@ -863,6 +887,7 @@ static int dasd_eckd_read_conf_immediately(struct dasd_device *device,
clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
set_bit(DASD_CQR_ALLOW_SLOCK, &cqr->flags);
cqr->retries = 5;
+ cqr->callback = read_conf_cb;
rc = dasd_sleep_on_immediatly(cqr);
return rc;
}
@@ -900,6 +925,7 @@ static int dasd_eckd_read_conf_lpm(struct dasd_device *device,
goto out_error;
}
dasd_eckd_fill_rcd_cqr(device, cqr, rcd_buf, lpm);
+ cqr->callback = read_conf_cb;
ret = dasd_sleep_on(cqr);
/*
* on success we update the user input parms
@@ -1075,6 +1101,12 @@ static void do_path_verification_work(struct work_struct *work)
data = container_of(work, struct path_verification_work_data, worker);
device = data->device;
+ /* delay path verification until device was resumed */
+ if (test_bit(DASD_FLAG_SUSPENDED, &device->flags)) {
+ schedule_work(work);
+ return;
+ }
+
opm = 0;
npm = 0;
ppm = 0;
@@ -1461,6 +1493,15 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
"Read device characteristic failed, rc=%d", rc);
goto out_err3;
}
+
+ if ((device->features & DASD_FEATURE_USERAW) &&
+ !(private->rdc_data.facilities.RT_in_LR)) {
+ dev_err(&device->cdev->dev, "The storage server does not "
+ "support raw-track access\n");
+ rc = -EINVAL;
+ goto out_err3;
+ }
+
/* find the valid cylinder size */
if (private->rdc_data.no_cyl == LV_COMPAT_CYL &&
private->rdc_data.long_no_cyl)
@@ -2012,9 +2053,13 @@ static void dasd_eckd_check_for_device_change(struct dasd_device *device,
/* first of all check for state change pending interrupt */
mask = DEV_STAT_ATTENTION | DEV_STAT_DEV_END | DEV_STAT_UNIT_EXCEP;
if ((scsw_dstat(&irb->scsw) & mask) == mask) {
- /* for alias only and not in offline processing*/
+ /*
+ * for alias only, not in offline processing
+ * and only if not suspended
+ */
if (!device->block && private->lcu &&
- !test_bit(DASD_FLAG_OFFLINE, &device->flags)) {
+ !test_bit(DASD_FLAG_OFFLINE, &device->flags) &&
+ !test_bit(DASD_FLAG_SUSPENDED, &device->flags)) {
/*
* the state change could be caused by an alias
* reassignment remove device from alias handling
@@ -2341,7 +2386,7 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_track(
new_track = 1;
end_idaw = 0;
len_to_track_end = 0;
- idaw_dst = 0;
+ idaw_dst = NULL;
idaw_len = 0;
rq_for_each_segment(bv, req, iter) {
dst = page_address(bv->bv_page) + bv->bv_offset;
@@ -2403,7 +2448,7 @@ static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_track(
if (end_idaw) {
idaws = idal_create_words(idaws, idaw_dst,
idaw_len);
- idaw_dst = 0;
+ idaw_dst = NULL;
idaw_len = 0;
end_idaw = 0;
}
@@ -3989,6 +4034,7 @@ static struct ccw_driver dasd_eckd_driver = {
.thaw = dasd_generic_restore_device,
.restore = dasd_generic_restore_device,
.uc_handler = dasd_generic_uc_handler,
+ .int_class = IOINT_DAS,
};
/*