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authorChristof Schmitt <christof.schmitt@de.ibm.com>2010-04-30 20:09:34 +0400
committerJames Bottomley <James.Bottomley@suse.de>2010-05-02 23:42:30 +0400
commit1674b4054744c2cfd6573e43eca45d86ff581d0e (patch)
tree6a59f4f00b15b30313c330e9636b36c88c93a1c9 /drivers/s390/scsi/zfcp_fsf.h
parent683229845f1780b10041ee7a1043fc8f10061455 (diff)
downloadlinux-1674b4054744c2cfd6573e43eca45d86ff581d0e.tar.xz
[SCSI] zfcp: Move sbale handling to zfcp_qdio files
Move the code accessing the qdio sbales and zfcp_qdio_req struct to the zfcp_qdio files and provide helper functions for accessing the qdio related parts. 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/zfcp_fsf.h')
-rw-r--r--drivers/s390/scsi/zfcp_fsf.h9
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/s390/scsi/zfcp_fsf.h b/drivers/s390/scsi/zfcp_fsf.h
index b3de682b64cf..4008bd786793 100644
--- a/drivers/s390/scsi/zfcp_fsf.h
+++ b/drivers/s390/scsi/zfcp_fsf.h
@@ -3,7 +3,7 @@
*
* Interface to the FSF support functions.
*
- * Copyright IBM Corporation 2002, 2009
+ * Copyright IBM Corporation 2002, 2010
*/
#ifndef FSF_H
@@ -152,7 +152,12 @@
#define FSF_CLASS_3 0x00000003
/* SBAL chaining */
-#define FSF_MAX_SBALS_PER_REQ 36
+#define ZFCP_FSF_MAX_SBALS_PER_REQ 36
+
+/* max. number of (data buffer) SBALEs in largest SBAL chain
+ * request ID + QTCB in SBALE 0 + 1 of first SBAL in chain */
+#define ZFCP_FSF_MAX_SBALES_PER_REQ \
+ (ZFCP_FSF_MAX_SBALS_PER_REQ * ZFCP_QDIO_MAX_SBALES_PER_SBAL - 2)
/* logging space behind QTCB */
#define FSF_QTCB_LOG_SIZE 1024