[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>

1 files changed, 6 insertions, 0 deletions

diff --git a/arch/s390/include/asm/qdio.h b/arch/s390/include/asm/qdio.h
index 0eaae6260274..2ba630276295 100644
--- a/arch/s390/include/asm/qdio.h
+++ b/arch/s390/include/asm/qdio.h
@@ -84,6 +84,7 @@ struct qdr {
 
 #define QIB_AC_OUTBOUND_PCI_SUPPORTED   0x40
 #define QIB_RFLAGS_ENABLE_QEBSM         0x80
+#define QIB_RFLAGS_ENABLE_DATA_DIV      0x02
 
 /**
  * struct qib - queue information block (QIB)
@@ -284,6 +285,9 @@ struct slsb {
         u8 val[QDIO_MAX_BUFFERS_PER_Q];
 } __attribute__ ((packed, aligned(256)));
 
+#define CHSC_AC2_DATA_DIV_AVAILABLE     0x0010
+#define CHSC_AC2_DATA_DIV_ENABLED       0x0002
+
 struct qdio_ssqd_desc {
         u8 flags;
         u8:8;
@@ -332,6 +336,7 @@ typedef void qdio_handler_t(struct ccw_device *, unsigned int, int,
  * @adapter_name: name for the adapter
  * @qib_param_field_format: format for qib_parm_field
  * @qib_param_field: pointer to 128 bytes or NULL, if no param field
+ * @qib_rflags: rflags to set
  * @input_slib_elements: pointer to no_input_qs * 128 words of data or NULL
  * @output_slib_elements: pointer to no_output_qs * 128 words of data or NULL
  * @no_input_qs: number of input queues
@@ -348,6 +353,7 @@ struct qdio_initialize {
         unsigned char adapter_name[8];
         unsigned int qib_param_field_format;
         unsigned char *qib_param_field;
+        unsigned char qib_rflags;
         unsigned long *input_slib_elements;
         unsigned long *output_slib_elements;
         unsigned int no_input_qs;