[S390] qdio: Split SBAL entry flags

The qdio SBAL entry flag is made-up of four different values that are
independent of one another. Some of the bits are reserved by the
hardware and should not be changed by qdio. Currently all four values
are overwritten since the SBAL entry flag is defined as an u32.

Split the SBAL entry flag into four u8's as defined by the hardware
and don't touch the reserved bits.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 23 insertions, 22 deletions

diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
index 8512b5c0ef82..022fb6a8cb83 100644
--- a/drivers/s390/scsi/zfcp_fsf.c
+++ b/drivers/s390/scsi/zfcp_fsf.c
@@ -640,7 +640,7 @@ static struct fsf_qtcb *zfcp_qtcb_alloc(mempool_t *pool)
 }
 
 static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio,
-                                                u32 fsf_cmd, u32 sbtype,
+                                                u32 fsf_cmd, u8 sbtype,
                                                 mempool_t *pool)
 {
         struct zfcp_adapter *adapter = qdio->adapter;
@@ -841,7 +841,7 @@ struct zfcp_fsf_req *zfcp_fsf_abort_fcp_cmnd(struct scsi_cmnd *scmnd)
         if (zfcp_qdio_sbal_get(qdio))
                 goto out;
         req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND,
-                                  SBAL_FLAGS0_TYPE_READ,
+                                  SBAL_SFLAGS0_TYPE_READ,
                                   qdio->adapter->pool.scsi_abort);
         if (IS_ERR(req)) {
                 req = NULL;
@@ -1012,7 +1012,7 @@ int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port,
                 goto out;
 
         req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC,
-                                  SBAL_FLAGS0_TYPE_WRITE_READ, pool);
+                                  SBAL_SFLAGS0_TYPE_WRITE_READ, pool);
 
         if (IS_ERR(req)) {
                 ret = PTR_ERR(req);
@@ -1110,7 +1110,7 @@ int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id,
                 goto out;
 
         req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS,
-                                  SBAL_FLAGS0_TYPE_WRITE_READ, NULL);
+                                  SBAL_SFLAGS0_TYPE_WRITE_READ, NULL);
 
         if (IS_ERR(req)) {
                 ret = PTR_ERR(req);
@@ -1156,7 +1156,7 @@ int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
                 goto out;
 
         req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
-                                  SBAL_FLAGS0_TYPE_READ,
+                                  SBAL_SFLAGS0_TYPE_READ,
                                   qdio->adapter->pool.erp_req);
 
         if (IS_ERR(req)) {
@@ -1198,7 +1198,7 @@ int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio,
                 goto out_unlock;
 
         req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
-                                  SBAL_FLAGS0_TYPE_READ, NULL);
+                                  SBAL_SFLAGS0_TYPE_READ, NULL);
 
         if (IS_ERR(req)) {
                 retval = PTR_ERR(req);
@@ -1250,7 +1250,7 @@ int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
                 goto out;
 
         req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
-                                  SBAL_FLAGS0_TYPE_READ,
+                                  SBAL_SFLAGS0_TYPE_READ,
                                   qdio->adapter->pool.erp_req);
 
         if (IS_ERR(req)) {
@@ -1296,7 +1296,7 @@ int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio,
                 goto out_unlock;
 
         req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
-                                  SBAL_FLAGS0_TYPE_READ, NULL);
+                                  SBAL_SFLAGS0_TYPE_READ, NULL);
 
         if (IS_ERR(req)) {
                 retval = PTR_ERR(req);
@@ -1412,7 +1412,7 @@ int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
                 goto out;
 
         req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
-                                  SBAL_FLAGS0_TYPE_READ,
+                                  SBAL_SFLAGS0_TYPE_READ,
                                   qdio->adapter->pool.erp_req);
 
         if (IS_ERR(req)) {
@@ -1478,7 +1478,7 @@ int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
                 goto out;
 
         req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
-                                  SBAL_FLAGS0_TYPE_READ,
+                                  SBAL_SFLAGS0_TYPE_READ,
                                   qdio->adapter->pool.erp_req);
 
         if (IS_ERR(req)) {
@@ -1553,7 +1553,7 @@ int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port)
                 goto out;
 
         req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
-                                  SBAL_FLAGS0_TYPE_READ,
+                                  SBAL_SFLAGS0_TYPE_READ,
                                   qdio->adapter->pool.erp_req);
 
         if (IS_ERR(req)) {
@@ -1606,7 +1606,7 @@ int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port)
                 goto out;
 
         req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
-                                  SBAL_FLAGS0_TYPE_READ,
+                                  SBAL_SFLAGS0_TYPE_READ,
                                   qdio->adapter->pool.erp_req);
 
         if (IS_ERR(req)) {
@@ -1698,7 +1698,7 @@ int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
                 goto out;
 
         req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT,
-                                  SBAL_FLAGS0_TYPE_READ,
+                                  SBAL_SFLAGS0_TYPE_READ,
                                   qdio->adapter->pool.erp_req);
 
         if (IS_ERR(req)) {
@@ -1812,7 +1812,7 @@ int zfcp_fsf_open_lun(struct zfcp_erp_action *erp_action)
                 goto out;
 
         req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN,
-                                  SBAL_FLAGS0_TYPE_READ,
+                                  SBAL_SFLAGS0_TYPE_READ,
                                   adapter->pool.erp_req);
 
         if (IS_ERR(req)) {
@@ -1901,7 +1901,7 @@ int zfcp_fsf_close_lun(struct zfcp_erp_action *erp_action)
                 goto out;
 
         req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN,
-                                  SBAL_FLAGS0_TYPE_READ,
+                                  SBAL_SFLAGS0_TYPE_READ,
                                   qdio->adapter->pool.erp_req);
 
         if (IS_ERR(req)) {
@@ -2161,7 +2161,7 @@ int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *scsi_cmnd)
 {
         struct zfcp_fsf_req *req;
         struct fcp_cmnd *fcp_cmnd;
-        unsigned int sbtype = SBAL_FLAGS0_TYPE_READ;
+        u8 sbtype = SBAL_SFLAGS0_TYPE_READ;
         int real_bytes, retval = -EIO, dix_bytes = 0;
         struct scsi_device *sdev = scsi_cmnd->device;
         struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
@@ -2181,7 +2181,7 @@ int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *scsi_cmnd)
         }
 
         if (scsi_cmnd->sc_data_direction == DMA_TO_DEVICE)
-                sbtype = SBAL_FLAGS0_TYPE_WRITE;
+                sbtype = SBAL_SFLAGS0_TYPE_WRITE;
 
         req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
                                   sbtype, adapter->pool.scsi_req);
@@ -2280,7 +2280,7 @@ struct zfcp_fsf_req *zfcp_fsf_fcp_task_mgmt(struct scsi_cmnd *scmnd,
                 goto out;
 
         req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
-                                  SBAL_FLAGS0_TYPE_WRITE,
+                                  SBAL_SFLAGS0_TYPE_WRITE,
                                   qdio->adapter->pool.scsi_req);
 
         if (IS_ERR(req)) {
@@ -2328,17 +2328,18 @@ struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter,
         struct zfcp_qdio *qdio = adapter->qdio;
         struct zfcp_fsf_req *req = NULL;
         struct fsf_qtcb_bottom_support *bottom;
-        int direction, retval = -EIO, bytes;
+        int retval = -EIO, bytes;
+        u8 direction;
 
         if (!(adapter->adapter_features & FSF_FEATURE_CFDC))
                 return ERR_PTR(-EOPNOTSUPP);
 
         switch (fsf_cfdc->command) {
         case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
-                direction = SBAL_FLAGS0_TYPE_WRITE;
+                direction = SBAL_SFLAGS0_TYPE_WRITE;
                 break;
         case FSF_QTCB_UPLOAD_CONTROL_FILE:
-                direction = SBAL_FLAGS0_TYPE_READ;
+                direction = SBAL_SFLAGS0_TYPE_READ;
                 break;
         default:
                 return ERR_PTR(-EINVAL);
@@ -2413,7 +2414,7 @@ void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx)
                 fsf_req->qdio_req.sbal_response = sbal_idx;
                 zfcp_fsf_req_complete(fsf_req);
 
-                if (likely(sbale->flags & SBAL_FLAGS_LAST_ENTRY))
+                if (likely(sbale->eflags & SBAL_EFLAGS_LAST_ENTRY))
                         break;
         }
 }