Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma

Pull inifiniband/rdma updates from Doug Ledford:
 "This is a fairly sizeable set of changes.  I've put them through a
  decent amount of testing prior to sending the pull request due to
  that.

  There are still a few fixups that I know are coming, but I wanted to
  go ahead and get the big, sizable chunk into your hands sooner rather
  than waiting for those last few fixups.

  Of note is the fact that this creates what is intended to be a
  temporary area in the drivers/staging tree specifically for some
  cleanups and additions that are coming for the RDMA stack.  We
  deprecated two drivers (ipath and amso1100) and are waiting to hear
  back if we can deprecate another one (ehca).  We also put Intel's new
  hfi1 driver into this area because it needs to be refactored and a
  transfer library created out of the factored out code, and then it and
  the qib driver and the soft-roce driver should all be modified to use
  that library.

  I expect drivers/staging/rdma to be around for three or four kernel
  releases and then to go away as all of the work is completed and final
  deletions of deprecated drivers are done.

  Summary of changes for 4.3:

   - Create drivers/staging/rdma
   - Move amso1100 driver to staging/rdma and schedule for deletion
   - Move ipath driver to staging/rdma and schedule for deletion
   - Add hfi1 driver to staging/rdma and set TODO for move to regular
     tree
   - Initial support for namespaces to be used on RDMA devices
   - Add RoCE GID table handling to the RDMA core caching code
   - Infrastructure to support handling of devices with differing read
     and write scatter gather capabilities
   - Various iSER updates
   - Kill off unsafe usage of global mr registrations
   - Update SRP driver
   - Misc  mlx4 driver updates
   - Support for the mr_alloc verb
   - Support for a netlink interface between kernel and user space cache
     daemon to speed path record queries and route resolution
   - Ininitial support for safe hot removal of verbs devices"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (136 commits)
  IB/ipoib: Suppress warning for send only join failures
  IB/ipoib: Clean up send-only multicast joins
  IB/srp: Fix possible protection fault
  IB/core: Move SM class defines from ib_mad.h to ib_smi.h
  IB/core: Remove unnecessary defines from ib_mad.h
  IB/hfi1: Add PSM2 user space header to header_install
  IB/hfi1: Add CSRs for CONFIG_SDMA_VERBOSITY
  mlx5: Fix incorrect wc pkey_index assignment for GSI messages
  IB/mlx5: avoid destroying a NULL mr in reg_user_mr error flow
  IB/uverbs: reject invalid or unknown opcodes
  IB/cxgb4: Fix if statement in pick_local_ip6adddrs
  IB/sa: Fix rdma netlink message flags
  IB/ucma: HW Device hot-removal support
  IB/mlx4_ib: Disassociate support
  IB/uverbs: Enable device removal when there are active user space applications
  IB/uverbs: Explicitly pass ib_dev to uverbs commands
  IB/uverbs: Fix race between ib_uverbs_open and remove_one
  IB/uverbs: Fix reference counting usage of event files
  IB/core: Make ib_dealloc_pd return void
  IB/srp: Create an insecure all physical rkey only if needed
  ...

1 files changed, 106 insertions, 0 deletions

diff --git a/drivers/staging/rdma/amso1100/c2_mq.h b/drivers/staging/rdma/amso1100/c2_mq.h
new file mode 100644
index 000000000000..fc1b9a7cec4b
--- /dev/null
+++ b/drivers/staging/rdma/amso1100/c2_mq.h
@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2005 Ammasso, Inc. All rights reserved.
+ * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef _C2_MQ_H_
+#define _C2_MQ_H_
+#include <linux/kernel.h>
+#include <linux/dma-mapping.h>
+#include "c2_wr.h"
+
+enum c2_shared_regs {
+
+	C2_SHARED_ARMED = 0x10,
+	C2_SHARED_NOTIFY = 0x18,
+	C2_SHARED_SHARED = 0x40,
+};
+
+struct c2_mq_shared {
+	u16 unused1;
+	u8 armed;
+	u8 notification_type;
+	u32 unused2;
+	u16 shared;
+	/* Pad to 64 bytes. */
+	u8 pad[64 - sizeof(u16) - 2 * sizeof(u8) - sizeof(u32) - sizeof(u16)];
+};
+
+enum c2_mq_type {
+	C2_MQ_HOST_TARGET = 1,
+	C2_MQ_ADAPTER_TARGET = 2,
+};
+
+/*
+ * c2_mq_t is for kernel-mode MQs like the VQs Cand the AEQ.
+ * c2_user_mq_t (which is the same format) is for user-mode MQs...
+ */
+#define C2_MQ_MAGIC 0x4d512020	/* 'MQ  ' */
+struct c2_mq {
+	u32 magic;
+	union {
+		u8 *host;
+		u8 __iomem *adapter;
+	} msg_pool;
+	dma_addr_t host_dma;
+	DEFINE_DMA_UNMAP_ADDR(mapping);
+	u16 hint_count;
+	u16 priv;
+	struct c2_mq_shared __iomem *peer;
+	__be16 *shared;
+	dma_addr_t shared_dma;
+	u32 q_size;
+	u32 msg_size;
+	u32 index;
+	enum c2_mq_type type;
+};
+
+static __inline__ int c2_mq_empty(struct c2_mq *q)
+{
+	return q->priv == be16_to_cpu(*q->shared);
+}
+
+static __inline__ int c2_mq_full(struct c2_mq *q)
+{
+	return q->priv == (be16_to_cpu(*q->shared) + q->q_size - 1) % q->q_size;
+}
+
+extern void c2_mq_lconsume(struct c2_mq *q, u32 wqe_count);
+extern void *c2_mq_alloc(struct c2_mq *q);
+extern void c2_mq_produce(struct c2_mq *q);
+extern void *c2_mq_consume(struct c2_mq *q);
+extern void c2_mq_free(struct c2_mq *q);
+extern void c2_mq_req_init(struct c2_mq *q, u32 index, u32 q_size, u32 msg_size,
+		       u8 __iomem *pool_start, u16 __iomem *peer, u32 type);
+extern void c2_mq_rep_init(struct c2_mq *q, u32 index, u32 q_size, u32 msg_size,
+			   u8 *pool_start, u16 __iomem *peer, u32 type);
+
+#endif				/* _C2_MQ_H_ */