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[SCSI] zfcp: Enable data division support for FCP devices

Browse source 
Try to enable data division support for FCP devices and indicate in
the adapter status flag if it succeeded.

Reviewed-by: Swen Schillig <[email protected]>
Signed-off-by: Christof Schmitt <[email protected]>
Signed-off-by: James Bottomley <[email protected]>
This commit is contained in:
Christof Schmitt 2010-07-16 15:37:41 +02:00 • committed by James Bottomley
commit dcc18f48a2
4 changed files with 19 additions and 1 deletions
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2
drivers/s390/cio/qdio_setup.c
View file

@ -368,6 +368,8 @@ static void setup_qib(struct qdio_irq *irq_ptr,
if (qebsm_possible())
irq_ptr->qib.rflags |= QIB_RFLAGS_ENABLE_QEBSM;
irq_ptr->qib.rflags |= init_data->qib_rflags;
irq_ptr->qib.qfmt = init_data->q_format;
if (init_data->no_input_qs)
irq_ptr->qib.isliba =

1
drivers/s390/scsi/zfcp_def.h
View file

@ -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

11
drivers/s390/scsi/zfcp_qdio.c
View file

@ -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;