File libibverbs-s390.patch of Package libibverbs

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File libibverbs-s390.patch of Package libibverbs

Cc: alexey_ishchuk@ru.ibm.com
Subject: DAPL support for Linux on System z

s390: Add DAPL support for Linux on System z in libibverbs

Changes required to support the OFED stack on the System z platform. These
changes include:
	* mb, rmb, wmb, and wc_wmb macro definitions for the System z platform;
	* new Infiniband verb command identifier.
The new Infiniband verb command was added to allow data transfer from user
space applications to infiniband devices on System z.

---
 include/infiniband/arch.h     |    7 +++++++
 include/infiniband/kern-abi.h |    6 ++++--
 2 files changed, 11 insertions(+), 2 deletions(-)

Index: libibverbs-1.1.7/include/infiniband/arch.h
===================================================================
--- libibverbs-1.1.7.orig/include/infiniband/arch.h	2014-03-05 10:36:36.000000000 +0100
+++ libibverbs-1.1.7/include/infiniband/arch.h	2014-03-31 14:20:50.479614972 +0200
@@ -115,6 +115,13 @@ static inline uint64_t ntohll(uint64_t x
 #define wmb()	 mb()
 #define wc_wmb() wmb()
 
+#elif defined(__s390x__) || defined(__s390__)
+
+#define mb()	 asm volatile("" ::: "memory")
+#define rmb()	 mb()
+#define wmb()	 mb()
+#define wc_wmb() wmb()
+
 #else
 
 #warning No architecture specific defines found.  Using generic implementation.
Index: libibverbs-1.1.7/include/infiniband/kern-abi.h
===================================================================
--- libibverbs-1.1.7.orig/include/infiniband/kern-abi.h	2014-03-05 10:36:36.000000000 +0100
+++ libibverbs-1.1.7/include/infiniband/kern-abi.h	2014-03-31 14:20:50.480614949 +0200
@@ -91,7 +91,8 @@ enum {
 	IB_USER_VERBS_CMD_OPEN_XRCD,
 	IB_USER_VERBS_CMD_CLOSE_XRCD,
 	IB_USER_VERBS_CMD_CREATE_XSRQ,
-	IB_USER_VERBS_CMD_OPEN_QP
+	IB_USER_VERBS_CMD_OPEN_QP,
+	IB_USER_VERBS_CMD_KWRITE_MMIO=52
 };
 
 #define IB_USER_VERBS_CMD_COMMAND_MASK		0xff
@@ -904,7 +905,8 @@ enum {
 	IB_USER_VERBS_CMD_OPEN_XRCD_V2 = -1,
 	IB_USER_VERBS_CMD_CLOSE_XRCD_V2 = -1,
 	IB_USER_VERBS_CMD_CREATE_XSRQ_V2 = -1,
-	IB_USER_VERBS_CMD_OPEN_QP_V2 = -1
+	IB_USER_VERBS_CMD_OPEN_QP_V2 = -1,
+	IB_USER_VERBS_CMD_KWRITE_MMIO_V2 = -1
 };
 
 struct ibv_modify_srq_v3 {

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