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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.c147
1 files changed, 112 insertions, 35 deletions
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index 3590fdb5b2f..773b3fe275b 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -313,8 +313,8 @@ static int prefix(struct ccw1 *ccw, struct PFX_eckd_data *pfxdata, int trk,
memset(pfxdata, 0, sizeof(*pfxdata));
/* prefix data */
pfxdata->format = 0;
- pfxdata->base_address = basepriv->conf_data.ned1.unit_addr;
- pfxdata->base_lss = basepriv->conf_data.ned1.ID;
+ pfxdata->base_address = basepriv->ned->unit_addr;
+ pfxdata->base_lss = basepriv->ned->ID;
pfxdata->validity.define_extend = 1;
/* private uid is kept up to date, conf_data may be outdated */
@@ -536,36 +536,40 @@ dasd_eckd_cdl_reclen(int recid)
/*
* Generate device unique id that specifies the physical device.
*/
-static int
-dasd_eckd_generate_uid(struct dasd_device *device, struct dasd_uid *uid)
+static int dasd_eckd_generate_uid(struct dasd_device *device,
+ struct dasd_uid *uid)
{
struct dasd_eckd_private *private;
- struct dasd_eckd_confdata *confdata;
+ int count;
private = (struct dasd_eckd_private *) device->private;
if (!private)
return -ENODEV;
- confdata = &private->conf_data;
- if (!confdata)
+ if (!private->ned || !private->gneq)
return -ENODEV;
memset(uid, 0, sizeof(struct dasd_uid));
- memcpy(uid->vendor, confdata->ned1.HDA_manufacturer,
+ memcpy(uid->vendor, private->ned->HDA_manufacturer,
sizeof(uid->vendor) - 1);
EBCASC(uid->vendor, sizeof(uid->vendor) - 1);
- memcpy(uid->serial, confdata->ned1.HDA_location,
+ memcpy(uid->serial, private->ned->HDA_location,
sizeof(uid->serial) - 1);
EBCASC(uid->serial, sizeof(uid->serial) - 1);
- uid->ssid = confdata->neq.subsystemID;
- uid->real_unit_addr = confdata->ned1.unit_addr;
- if (confdata->ned2.sneq.flags == 0x40 &&
- confdata->ned2.sneq.format == 0x0001) {
- uid->type = confdata->ned2.sneq.sua_flags;
+ uid->ssid = private->gneq->subsystemID;
+ uid->real_unit_addr = private->ned->unit_addr;;
+ if (private->sneq) {
+ uid->type = private->sneq->sua_flags;
if (uid->type == UA_BASE_PAV_ALIAS)
- uid->base_unit_addr = confdata->ned2.sneq.base_unit_addr;
+ uid->base_unit_addr = private->sneq->base_unit_addr;
} else {
uid->type = UA_BASE_DEVICE;
}
+ if (private->vdsneq) {
+ for (count = 0; count < 16; count++) {
+ sprintf(uid->vduit+2*count, "%02x",
+ private->vdsneq->uit[count]);
+ }
+ }
return 0;
}
@@ -623,6 +627,15 @@ static int dasd_eckd_read_conf_lpm(struct dasd_device *device,
ret = -ENOMEM;
goto out_error;
}
+
+ /*
+ * buffer has to start with EBCDIC "V1.0" to show
+ * support for virtual device SNEQ
+ */
+ rcd_buf[0] = 0xE5;
+ rcd_buf[1] = 0xF1;
+ rcd_buf[2] = 0x4B;
+ rcd_buf[3] = 0xF0;
cqr = dasd_eckd_build_rcd_lpm(device, rcd_buf, ciw, lpm);
if (IS_ERR(cqr)) {
ret = PTR_ERR(cqr);
@@ -646,8 +659,62 @@ out_error:
return ret;
}
-static int
-dasd_eckd_read_conf(struct dasd_device *device)
+static int dasd_eckd_identify_conf_parts(struct dasd_eckd_private *private)
+{
+
+ struct dasd_sneq *sneq;
+ int i, count;
+
+ private->ned = NULL;
+ private->sneq = NULL;
+ private->vdsneq = NULL;
+ private->gneq = NULL;
+ count = private->conf_len / sizeof(struct dasd_sneq);
+ sneq = (struct dasd_sneq *)private->conf_data;
+ for (i = 0; i < count; ++i) {
+ if (sneq->flags.identifier == 1 && sneq->format == 1)
+ private->sneq = sneq;
+ else if (sneq->flags.identifier == 1 && sneq->format == 4)
+ private->vdsneq = (struct vd_sneq *)sneq;
+ else if (sneq->flags.identifier == 2)
+ private->gneq = (struct dasd_gneq *)sneq;
+ else if (sneq->flags.identifier == 3 && sneq->res1 == 1)
+ private->ned = (struct dasd_ned *)sneq;
+ sneq++;
+ }
+ if (!private->ned || !private->gneq) {
+ private->ned = NULL;
+ private->sneq = NULL;
+ private->vdsneq = NULL;
+ private->gneq = NULL;
+ return -EINVAL;
+ }
+ return 0;
+
+};
+
+static unsigned char dasd_eckd_path_access(void *conf_data, int conf_len)
+{
+ struct dasd_gneq *gneq;
+ int i, count, found;
+
+ count = conf_len / sizeof(*gneq);
+ gneq = (struct dasd_gneq *)conf_data;
+ found = 0;
+ for (i = 0; i < count; ++i) {
+ if (gneq->flags.identifier == 2) {
+ found = 1;
+ break;
+ }
+ gneq++;
+ }
+ if (found)
+ return ((char *)gneq)[18] & 0x07;
+ else
+ return 0;
+}
+
+static int dasd_eckd_read_conf(struct dasd_device *device)
{
void *conf_data;
int conf_len, conf_data_saved;
@@ -661,7 +728,6 @@ dasd_eckd_read_conf(struct dasd_device *device)
path_data->opm = ccw_device_get_path_mask(device->cdev);
lpm = 0x80;
conf_data_saved = 0;
-
/* get configuration data per operational path */
for (lpm = 0x80; lpm; lpm>>= 1) {
if (lpm & path_data->opm){
@@ -678,22 +744,20 @@ dasd_eckd_read_conf(struct dasd_device *device)
"data retrieved");
continue; /* no error */
}
- if (conf_len != sizeof(struct dasd_eckd_confdata)) {
- MESSAGE(KERN_WARNING,
- "sizes of configuration data mismatch"
- "%d (read) vs %ld (expected)",
- conf_len,
- sizeof(struct dasd_eckd_confdata));
- kfree(conf_data);
- continue; /* no error */
- }
/* save first valid configuration data */
- if (!conf_data_saved){
- memcpy(&private->conf_data, conf_data,
- sizeof(struct dasd_eckd_confdata));
+ if (!conf_data_saved) {
+ kfree(private->conf_data);
+ private->conf_data = conf_data;
+ private->conf_len = conf_len;
+ if (dasd_eckd_identify_conf_parts(private)) {
+ private->conf_data = NULL;
+ private->conf_len = 0;
+ kfree(conf_data);
+ continue;
+ }
conf_data_saved++;
}
- switch (((char *)conf_data)[242] & 0x07){
+ switch (dasd_eckd_path_access(conf_data, conf_len)) {
case 0x02:
path_data->npm |= lpm;
break;
@@ -701,7 +765,8 @@ dasd_eckd_read_conf(struct dasd_device *device)
path_data->ppm |= lpm;
break;
}
- kfree(conf_data);
+ if (conf_data != private->conf_data)
+ kfree(conf_data);
}
}
return 0;
@@ -952,6 +1017,7 @@ out_err2:
dasd_free_block(device->block);
device->block = NULL;
out_err1:
+ kfree(private->conf_data);
kfree(device->private);
device->private = NULL;
return rc;
@@ -959,7 +1025,17 @@ out_err1:
static void dasd_eckd_uncheck_device(struct dasd_device *device)
{
+ struct dasd_eckd_private *private;
+
+ private = (struct dasd_eckd_private *) device->private;
dasd_alias_disconnect_device_from_lcu(device);
+ private->ned = NULL;
+ private->sneq = NULL;
+ private->vdsneq = NULL;
+ private->gneq = NULL;
+ private->conf_len = 0;
+ kfree(private->conf_data);
+ private->conf_data = NULL;
}
static struct dasd_ccw_req *
@@ -1746,9 +1822,10 @@ dasd_eckd_fill_info(struct dasd_device * device,
info->characteristics_size = sizeof(struct dasd_eckd_characteristics);
memcpy(info->characteristics, &private->rdc_data,
sizeof(struct dasd_eckd_characteristics));
- info->confdata_size = sizeof(struct dasd_eckd_confdata);
- memcpy(info->configuration_data, &private->conf_data,
- sizeof(struct dasd_eckd_confdata));
+ info->confdata_size = min((unsigned long)private->conf_len,
+ sizeof(info->configuration_data));
+ memcpy(info->configuration_data, private->conf_data,
+ info->confdata_size);
return 0;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-24 08:19:07 +0000