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path: root/drivers/s390/scsi/zfcp_fsf.c
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Diffstat (limited to 'drivers/s390/scsi/zfcp_fsf.c')
-rw-r--r--drivers/s390/scsi/zfcp_fsf.c179
1 files changed, 116 insertions, 63 deletions
diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
index 9ac6a6e4a604..9d1d7d1842ce 100644
--- a/drivers/s390/scsi/zfcp_fsf.c
+++ b/drivers/s390/scsi/zfcp_fsf.c
@@ -21,6 +21,7 @@
static void zfcp_fsf_request_timeout_handler(unsigned long data)
{
struct zfcp_adapter *adapter = (struct zfcp_adapter *) data;
+ zfcp_qdio_siosl(adapter);
zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
"fsrth_1", NULL);
}
@@ -274,6 +275,7 @@ static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
break;
case FSF_STATUS_READ_LINK_DOWN:
zfcp_fsf_status_read_link_down(req);
+ zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKDOWN, 0);
break;
case FSF_STATUS_READ_LINK_UP:
dev_info(&adapter->ccw_device->dev,
@@ -286,6 +288,8 @@ static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
ZFCP_STATUS_COMMON_ERP_FAILED,
"fssrh_2", req);
+ zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKUP, 0);
+
break;
case FSF_STATUS_READ_NOTIFICATION_LOST:
if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED)
@@ -323,6 +327,7 @@ static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req)
dev_err(&req->adapter->ccw_device->dev,
"The FCP adapter reported a problem "
"that cannot be recovered\n");
+ zfcp_qdio_siosl(req->adapter);
zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfsqe1", req);
break;
}
@@ -413,6 +418,7 @@ static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req)
dev_err(&adapter->ccw_device->dev,
"0x%x is not a valid transfer protocol status\n",
qtcb->prefix.prot_status);
+ zfcp_qdio_siosl(adapter);
zfcp_erp_adapter_shutdown(adapter, 0, "fspse_9", req);
}
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
@@ -495,8 +501,9 @@ static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3;
adapter->hydra_version = bottom->adapter_type;
- adapter->timer_ticks = bottom->timer_interval;
- adapter->stat_read_buf_num = max(bottom->status_read_buf_num, (u16)16);
+ adapter->timer_ticks = bottom->timer_interval & ZFCP_FSF_TIMER_INT_MASK;
+ adapter->stat_read_buf_num = max(bottom->status_read_buf_num,
+ (u16)FSF_STATUS_READS_RECOM);
if (fc_host_permanent_port_name(shost) == -1)
fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
@@ -522,6 +529,8 @@ static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
return -EIO;
}
+ zfcp_scsi_set_prot(adapter);
+
return 0;
}
@@ -719,11 +728,6 @@ static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio,
zfcp_qdio_req_init(adapter->qdio, &req->qdio_req, req->req_id, sbtype,
req->qtcb, sizeof(struct fsf_qtcb));
- if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP)) {
- zfcp_fsf_req_free(req);
- return ERR_PTR(-EIO);
- }
-
return req;
}
@@ -736,7 +740,7 @@ static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
zfcp_reqlist_add(adapter->req_list, req);
- req->qdio_req.qdio_outb_usage = atomic_read(&qdio->req_q.count);
+ req->qdio_req.qdio_outb_usage = atomic_read(&qdio->req_q_free);
req->issued = get_clock();
if (zfcp_qdio_send(qdio, &req->qdio_req)) {
del_timer(&req->timer);
@@ -963,8 +967,7 @@ static void zfcp_fsf_setup_ct_els_unchained(struct zfcp_qdio *qdio,
static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
struct scatterlist *sg_req,
- struct scatterlist *sg_resp,
- int max_sbals)
+ struct scatterlist *sg_resp)
{
struct zfcp_adapter *adapter = req->adapter;
u32 feat = adapter->adapter_features;
@@ -981,24 +984,25 @@ static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
}
/* use single, unchained SBAL if it can hold the request */
- if (zfcp_qdio_sg_one_sbale(sg_req) || zfcp_qdio_sg_one_sbale(sg_resp)) {
+ if (zfcp_qdio_sg_one_sbale(sg_req) && zfcp_qdio_sg_one_sbale(sg_resp)) {
zfcp_fsf_setup_ct_els_unchained(adapter->qdio, &req->qdio_req,
sg_req, sg_resp);
return 0;
}
- bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->qdio_req,
- sg_req, max_sbals);
+ bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->qdio_req, sg_req);
if (bytes <= 0)
return -EIO;
+ zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
req->qtcb->bottom.support.req_buf_length = bytes;
zfcp_qdio_skip_to_last_sbale(&req->qdio_req);
bytes = zfcp_qdio_sbals_from_sg(adapter->qdio, &req->qdio_req,
- sg_resp, max_sbals);
+ sg_resp);
req->qtcb->bottom.support.resp_buf_length = bytes;
if (bytes <= 0)
return -EIO;
+ zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
return 0;
}
@@ -1006,11 +1010,11 @@ static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req,
struct scatterlist *sg_req,
struct scatterlist *sg_resp,
- int max_sbals, unsigned int timeout)
+ unsigned int timeout)
{
int ret;
- ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp, max_sbals);
+ ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp);
if (ret)
return ret;
@@ -1050,8 +1054,7 @@ int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port,
}
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
- ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp,
- ZFCP_FSF_MAX_SBALS_PER_REQ, timeout);
+ ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp, timeout);
if (ret)
goto failed_send;
@@ -1147,7 +1150,10 @@ int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id,
}
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
- ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, 2, timeout);
+
+ zfcp_qdio_sbal_limit(qdio, &req->qdio_req, 2);
+
+ ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, timeout);
if (ret)
goto failed_send;
@@ -2029,7 +2035,7 @@ static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC;
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
blktrc.flags |= ZFCP_BLK_REQ_ERROR;
- blktrc.inb_usage = req->qdio_req.qdio_inb_usage;
+ blktrc.inb_usage = 0;
blktrc.outb_usage = req->qdio_req.qdio_outb_usage;
if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA &&
@@ -2039,9 +2045,13 @@ static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
blktrc.fabric_lat = lat_in->fabric_lat * ticks;
switch (req->qtcb->bottom.io.data_direction) {
+ case FSF_DATADIR_DIF_READ_STRIP:
+ case FSF_DATADIR_DIF_READ_CONVERT:
case FSF_DATADIR_READ:
lat = &unit->latencies.read;
break;
+ case FSF_DATADIR_DIF_WRITE_INSERT:
+ case FSF_DATADIR_DIF_WRITE_CONVERT:
case FSF_DATADIR_WRITE:
lat = &unit->latencies.write;
break;
@@ -2082,6 +2092,21 @@ static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req)
goto skip_fsfstatus;
}
+ switch (req->qtcb->header.fsf_status) {
+ case FSF_INCONSISTENT_PROT_DATA:
+ case FSF_INVALID_PROT_PARM:
+ set_host_byte(scpnt, DID_ERROR);
+ goto skip_fsfstatus;
+ case FSF_BLOCK_GUARD_CHECK_FAILURE:
+ zfcp_scsi_dif_sense_error(scpnt, 0x1);
+ goto skip_fsfstatus;
+ case FSF_APP_TAG_CHECK_FAILURE:
+ zfcp_scsi_dif_sense_error(scpnt, 0x2);
+ goto skip_fsfstatus;
+ case FSF_REF_TAG_CHECK_FAILURE:
+ zfcp_scsi_dif_sense_error(scpnt, 0x3);
+ goto skip_fsfstatus;
+ }
fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt);
@@ -2191,6 +2216,44 @@ skip_fsfstatus:
}
}
+static int zfcp_fsf_set_data_dir(struct scsi_cmnd *scsi_cmnd, u32 *data_dir)
+{
+ switch (scsi_get_prot_op(scsi_cmnd)) {
+ case SCSI_PROT_NORMAL:
+ switch (scsi_cmnd->sc_data_direction) {
+ case DMA_NONE:
+ *data_dir = FSF_DATADIR_CMND;
+ break;
+ case DMA_FROM_DEVICE:
+ *data_dir = FSF_DATADIR_READ;
+ break;
+ case DMA_TO_DEVICE:
+ *data_dir = FSF_DATADIR_WRITE;
+ break;
+ case DMA_BIDIRECTIONAL:
+ return -EINVAL;
+ }
+ break;
+
+ case SCSI_PROT_READ_STRIP:
+ *data_dir = FSF_DATADIR_DIF_READ_STRIP;
+ break;
+ case SCSI_PROT_WRITE_INSERT:
+ *data_dir = FSF_DATADIR_DIF_WRITE_INSERT;
+ break;
+ case SCSI_PROT_READ_PASS:
+ *data_dir = FSF_DATADIR_DIF_READ_CONVERT;
+ break;
+ case SCSI_PROT_WRITE_PASS:
+ *data_dir = FSF_DATADIR_DIF_WRITE_CONVERT;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
/**
* zfcp_fsf_send_fcp_command_task - initiate an FCP command (for a SCSI command)
* @unit: unit where command is sent to
@@ -2202,16 +2265,17 @@ int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit,
struct zfcp_fsf_req *req;
struct fcp_cmnd *fcp_cmnd;
unsigned int sbtype = SBAL_FLAGS0_TYPE_READ;
- int real_bytes, retval = -EIO;
+ int real_bytes, retval = -EIO, dix_bytes = 0;
struct zfcp_adapter *adapter = unit->port->adapter;
struct zfcp_qdio *qdio = adapter->qdio;
+ struct fsf_qtcb_bottom_io *io;
if (unlikely(!(atomic_read(&unit->status) &
ZFCP_STATUS_COMMON_UNBLOCKED)))
return -EBUSY;
spin_lock(&qdio->req_q_lock);
- if (atomic_read(&qdio->req_q.count) <= 0) {
+ if (atomic_read(&qdio->req_q_free) <= 0) {
atomic_inc(&qdio->req_q_full);
goto out;
}
@@ -2227,56 +2291,45 @@ int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *unit,
goto out;
}
+ scsi_cmnd->host_scribble = (unsigned char *) req->req_id;
+
+ io = &req->qtcb->bottom.io;
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
req->unit = unit;
req->data = scsi_cmnd;
req->handler = zfcp_fsf_send_fcp_command_handler;
req->qtcb->header.lun_handle = unit->handle;
req->qtcb->header.port_handle = unit->port->handle;
- req->qtcb->bottom.io.service_class = FSF_CLASS_3;
- req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
-
- scsi_cmnd->host_scribble = (unsigned char *) req->req_id;
+ io->service_class = FSF_CLASS_3;
+ io->fcp_cmnd_length = FCP_CMND_LEN;
- /*
- * set depending on data direction:
- * data direction bits in SBALE (SB Type)
- * data direction bits in QTCB
- */
- switch (scsi_cmnd->sc_data_direction) {
- case DMA_NONE:
- req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
- break;
- case DMA_FROM_DEVICE:
- req->qtcb->bottom.io.data_direction = FSF_DATADIR_READ;
- break;
- case DMA_TO_DEVICE:
- req->qtcb->bottom.io.data_direction = FSF_DATADIR_WRITE;
- break;
- case DMA_BIDIRECTIONAL:
- goto failed_scsi_cmnd;
+ if (scsi_get_prot_op(scsi_cmnd) != SCSI_PROT_NORMAL) {
+ io->data_block_length = scsi_cmnd->device->sector_size;
+ io->ref_tag_value = scsi_get_lba(scsi_cmnd) & 0xFFFFFFFF;
}
+ zfcp_fsf_set_data_dir(scsi_cmnd, &io->data_direction);
+
get_device(&unit->dev);
fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd);
+ if (scsi_prot_sg_count(scsi_cmnd)) {
+ zfcp_qdio_set_data_div(qdio, &req->qdio_req,
+ scsi_prot_sg_count(scsi_cmnd));
+ dix_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
+ scsi_prot_sglist(scsi_cmnd));
+ io->prot_data_length = dix_bytes;
+ }
+
real_bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
- scsi_sglist(scsi_cmnd),
- ZFCP_FSF_MAX_SBALS_PER_REQ);
- if (unlikely(real_bytes < 0)) {
- if (req->qdio_req.sbal_number >= ZFCP_FSF_MAX_SBALS_PER_REQ) {
- dev_err(&adapter->ccw_device->dev,
- "Oversize data package, unit 0x%016Lx "
- "on port 0x%016Lx closed\n",
- (unsigned long long)unit->fcp_lun,
- (unsigned long long)unit->port->wwpn);
- zfcp_erp_unit_shutdown(unit, 0, "fssfct1", req);
- retval = -EINVAL;
- }
+ scsi_sglist(scsi_cmnd));
+
+ if (unlikely(real_bytes < 0) || unlikely(dix_bytes < 0))
goto failed_scsi_cmnd;
- }
+
+ zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
retval = zfcp_fsf_req_send(req);
if (unlikely(retval))
@@ -2395,13 +2448,13 @@ struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter,
bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE;
bottom->option = fsf_cfdc->option;
- bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
- fsf_cfdc->sg,
- ZFCP_FSF_MAX_SBALS_PER_REQ);
+ bytes = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, fsf_cfdc->sg);
+
if (bytes != ZFCP_CFDC_MAX_SIZE) {
zfcp_fsf_req_free(req);
goto out;
}
+ zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
retval = zfcp_fsf_req_send(req);
@@ -2423,7 +2476,7 @@ out:
void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx)
{
struct zfcp_adapter *adapter = qdio->adapter;
- struct qdio_buffer *sbal = qdio->resp_q.sbal[sbal_idx];
+ struct qdio_buffer *sbal = qdio->res_q[sbal_idx];
struct qdio_buffer_element *sbale;
struct zfcp_fsf_req *fsf_req;
unsigned long req_id;
@@ -2435,17 +2488,17 @@ void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx)
req_id = (unsigned long) sbale->addr;
fsf_req = zfcp_reqlist_find_rm(adapter->req_list, req_id);
- if (!fsf_req)
+ if (!fsf_req) {
/*
* Unknown request means that we have potentially memory
* corruption and must stop the machine immediately.
*/
+ zfcp_qdio_siosl(adapter);
panic("error: unknown req_id (%lx) on adapter %s.\n",
req_id, dev_name(&adapter->ccw_device->dev));
+ }
fsf_req->qdio_req.sbal_response = sbal_idx;
- fsf_req->qdio_req.qdio_inb_usage =
- atomic_read(&qdio->resp_q.count);
zfcp_fsf_req_complete(fsf_req);
if (likely(sbale->flags & SBAL_FLAGS_LAST_ENTRY))