diff options
| author | Christof Schmitt <christof.schmitt@de.ibm.com> | 2010-07-16 15:37:41 +0200 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-07-28 09:48:55 -0500 |
| commit | dcc18f48a2f1a44c5e8848f30d0cf53a8066c62a (patch) | |
| tree | 6bf6e20f2309b0a077f328189d9f6656f554cedf /drivers/s390/scsi | |
| parent | d23948ea38c4c6aa13e4df903dfdd71cabd0e6a3 (diff) | |
| download | blackbird-op-linux-dcc18f48a2f1a44c5e8848f30d0cf53a8066c62a.tar.gz blackbird-op-linux-dcc18f48a2f1a44c5e8848f30d0cf53a8066c62a.zip | |
[SCSI] zfcp: Enable data division support for FCP devices
Try to enable data division support for FCP devices and indicate in
the adapter status flag if it succeeded.
Reviewed-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/s390/scsi')
| -rw-r--r-- | drivers/s390/scsi/zfcp_def.h | 1 | ||||
| -rw-r--r-- | drivers/s390/scsi/zfcp_qdio.c | 11 |
2 files changed, 11 insertions, 1 deletions
diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h index cb3640c6477c..6c6374ba1807 100644 --- a/drivers/s390/scsi/zfcp_def.h +++ b/drivers/s390/scsi/zfcp_def.h @@ -77,6 +77,7 @@ struct zfcp_reqlist; #define ZFCP_STATUS_ADAPTER_HOST_CON_INIT 0x00000010 #define ZFCP_STATUS_ADAPTER_ERP_PENDING 0x00000100 #define ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED 0x00000200 +#define ZFCP_STATUS_ADAPTER_DATA_DIV_ENABLED 0x00000400 /* remote port status */ #define ZFCP_STATUS_PORT_PHYS_OPEN 0x00000001 diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c index a638278c6025..c4559b29bebc 100644 --- a/drivers/s390/scsi/zfcp_qdio.c +++ b/drivers/s390/scsi/zfcp_qdio.c @@ -283,6 +283,7 @@ static void zfcp_qdio_setup_init_data(struct qdio_initialize *id, id->q_format = QDIO_ZFCP_QFMT; memcpy(id->adapter_name, dev_name(&id->cdev->dev), 8); ASCEBC(id->adapter_name, 8); + id->qib_rflags = QIB_RFLAGS_ENABLE_DATA_DIV; id->qib_param_field_format = 0; id->qib_param_field = NULL; id->input_slib_elements = NULL; @@ -294,8 +295,8 @@ static void zfcp_qdio_setup_init_data(struct qdio_initialize *id, id->int_parm = (unsigned long) qdio; id->input_sbal_addr_array = (void **) (qdio->res_q); id->output_sbal_addr_array = (void **) (qdio->req_q); - } + /** * zfcp_qdio_allocate - allocate queue memory and initialize QDIO data * @adapter: pointer to struct zfcp_adapter @@ -358,6 +359,7 @@ int zfcp_qdio_open(struct zfcp_qdio *qdio) struct qdio_initialize init_data; struct zfcp_adapter *adapter = qdio->adapter; struct ccw_device *cdev = adapter->ccw_device; + struct qdio_ssqd_desc ssqd; int cc; if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP) @@ -368,6 +370,13 @@ int zfcp_qdio_open(struct zfcp_qdio *qdio) if (qdio_establish(&init_data)) goto failed_establish; + if (qdio_get_ssqd_desc(init_data.cdev, &ssqd)) + goto failed_qdio; + + if (ssqd.qdioac2 & CHSC_AC2_DATA_DIV_ENABLED) + atomic_set_mask(ZFCP_STATUS_ADAPTER_DATA_DIV_ENABLED, + &qdio->adapter->status); + if (qdio_activate(cdev)) goto failed_qdio; |
