[PATCH qedr 00/10] QLogic RDMA Driver (qedr)

[PATCH qedr 00/10] QLogic RDMA Driver (qedr)

[Ram Amrani]

This series introduces RoCE RDMA driver for the 579xx RDMA products by
Qlogic. The RDMA support is added as an additional loadable module (qedr)
over the Ethernet qede driver.
The qedr module will support both RoCE and iWarp, although this series
only adds RoCE support.

This series was preceded by RFC v3[1].The major difference between the two
is that the required qed and qede driver changes for RDMA support were 
already submitted and accepted on net-next by Dave for 4.9, see [2]. Also,
the qedr menu configuration was moved from net/ethernet to infiniband.

The series was built and tested against branch k.o/for-4.9, based on:
7958b377d0c961881471c224da9f3a3 (after importing qed/qede patches, and
more, from net-dev).

Thanks for everyone which pointed out problems in the driver.

Reference:
 - [1] http://www.spinics.net/lists/linux-rdma/msg41087.html
 - [2] https://www.spinics.net/lists/netdev/msg398562.html

Rajesh Borundia (10):
  qedr: Add RoCE driver framework
  qedr: Add support for RoCE HW init
  qedr: Add support for user context verbs
  qedr: Add support for PD,PKEY and CQ verbs
  qedr: Add support for QP verbs
  qedr: Add support for memory registeration verbs
  qedr: Add support for data path
  qedr: Add LL2 RoCE interface
  qedr: Add GSI support
  qedr: Add events support and register IB device

 drivers/infiniband/Kconfig                 |    2 +
 drivers/infiniband/hw/Makefile             |    1 +
 drivers/infiniband/hw/qedr/Kconfig         |    7 +
 drivers/infiniband/hw/qedr/Makefile        |    3 +
 drivers/infiniband/hw/qedr/main.c          |  911 +++++++
 drivers/infiniband/hw/qedr/qedr.h          |  495 ++++
 drivers/infiniband/hw/qedr/qedr_cm.c       |  636 +++++
 drivers/infiniband/hw/qedr/qedr_cm.h       |   61 +
 drivers/infiniband/hw/qedr/qedr_hsi.h      |   56 +
 drivers/infiniband/hw/qedr/qedr_hsi_rdma.h |  748 ++++++
 drivers/infiniband/hw/qedr/verbs.c         | 3552 ++++++++++++++++++++++++++++
 drivers/infiniband/hw/qedr/verbs.h         |  101 +
 drivers/net/ethernet/qlogic/Kconfig        |   11 -
 include/uapi/linux/pci_regs.h              |    3 +
 include/uapi/rdma/qedr-abi.h               |  106 +
 15 files changed, 6682 insertions(+), 11 deletions(-)
 create mode 100644 drivers/infiniband/hw/qedr/Kconfig
 create mode 100644 drivers/infiniband/hw/qedr/Makefile
 create mode 100644 drivers/infiniband/hw/qedr/main.c
 create mode 100644 drivers/infiniband/hw/qedr/qedr.h
 create mode 100644 drivers/infiniband/hw/qedr/qedr_cm.c
 create mode 100644 drivers/infiniband/hw/qedr/qedr_cm.h
 create mode 100644 drivers/infiniband/hw/qedr/qedr_hsi.h
 create mode 100644 drivers/infiniband/hw/qedr/qedr_hsi_rdma.h
 create mode 100644 drivers/infiniband/hw/qedr/verbs.c
 create mode 100644 drivers/infiniband/hw/qedr/verbs.h
 create mode 100644 include/uapi/rdma/qedr-abi.h

-- 
1.8.3.1

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[PATCH qedr 01/10] qedr: Add RoCE driver framework

[Ram Amrani]

Adds a skeletal implementation of the qed* RoCE driver -
basically the ability to communicate with the qede driver and
receive notifications from it regarding various init/exit events.

Signed-off-by: Rajesh Borundia <rajesh.borundia-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
Signed-off-by: Ram Amrani <Ram.Amrani-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
---
 drivers/infiniband/Kconfig          |   2 +
 drivers/infiniband/hw/Makefile      |   1 +
 drivers/infiniband/hw/qedr/Kconfig  |   7 +
 drivers/infiniband/hw/qedr/Makefile |   3 +
 drivers/infiniband/hw/qedr/main.c   | 254 ++++++++++++++++++++++++++++++++++++
 drivers/infiniband/hw/qedr/qedr.h   |  61 +++++++++
 drivers/net/ethernet/qlogic/Kconfig |  11 --
 include/uapi/linux/pci_regs.h       |   3 +
 8 files changed, 331 insertions(+), 11 deletions(-)
 create mode 100644 drivers/infiniband/hw/qedr/Kconfig
 create mode 100644 drivers/infiniband/hw/qedr/Makefile
 create mode 100644 drivers/infiniband/hw/qedr/main.c
 create mode 100644 drivers/infiniband/hw/qedr/qedr.h

diff --git a/drivers/infiniband/Kconfig b/drivers/infiniband/Kconfig
index 19a418a..fb3fb89 100644
--- a/drivers/infiniband/Kconfig
+++ b/drivers/infiniband/Kconfig
@@ -89,4 +89,6 @@ source "drivers/infiniband/sw/rxe/Kconfig"
 
 source "drivers/infiniband/hw/hfi1/Kconfig"
 
+source "drivers/infiniband/hw/qedr/Kconfig"
+
 endif # INFINIBAND
diff --git a/drivers/infiniband/hw/Makefile b/drivers/infiniband/hw/Makefile
index 21fe401..e7a5ed9 100644
--- a/drivers/infiniband/hw/Makefile
+++ b/drivers/infiniband/hw/Makefile
@@ -10,3 +10,4 @@ obj-$(CONFIG_INFINIBAND_OCRDMA)		+= ocrdma/
 obj-$(CONFIG_INFINIBAND_USNIC)		+= usnic/
 obj-$(CONFIG_INFINIBAND_HFI1)		+= hfi1/
 obj-$(CONFIG_INFINIBAND_HNS)		+= hns/
+obj-$(CONFIG_INFINIBAND_QEDR)		+= qedr/
diff --git a/drivers/infiniband/hw/qedr/Kconfig b/drivers/infiniband/hw/qedr/Kconfig
new file mode 100644
index 0000000..7c06d85
--- /dev/null
+++ b/drivers/infiniband/hw/qedr/Kconfig
@@ -0,0 +1,7 @@
+config INFINIBAND_QEDR
+	tristate "QLogic RoCE driver"
+	depends on 64BIT && QEDE
+	select QED_LL2
+	---help---
+	  This driver provides low-level InfiniBand over Ethernet
+	  support for QLogic QED host channel adapters (HCAs).
diff --git a/drivers/infiniband/hw/qedr/Makefile b/drivers/infiniband/hw/qedr/Makefile
new file mode 100644
index 0000000..3a5b7a2
--- /dev/null
+++ b/drivers/infiniband/hw/qedr/Makefile
@@ -0,0 +1,3 @@
+obj-$(CONFIG_INFINIBAND_QEDR) := qedr.o
+
+qedr-y := main.o
diff --git a/drivers/infiniband/hw/qedr/main.c b/drivers/infiniband/hw/qedr/main.c
new file mode 100644
index 0000000..7387d02
--- /dev/null
+++ b/drivers/infiniband/hw/qedr/main.c
@@ -0,0 +1,254 @@
+/* QLogic qedr NIC Driver
+ * Copyright (c) 2015-2016  QLogic Corporation
+ *
+ * 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.
+ */
+#include <linux/module.h>
+#include <rdma/ib_verbs.h>
+#include <rdma/ib_addr.h>
+#include <linux/netdevice.h>
+#include <linux/iommu.h>
+#include <net/addrconf.h>
+#include <linux/qed/qede_roce.h>
+#include "qedr.h"
+
+MODULE_DESCRIPTION("QLogic 40G/100G ROCE Driver");
+MODULE_AUTHOR("QLogic Corporation");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_VERSION(QEDR_MODULE_VERSION);
+
+void qedr_ib_dispatch_event(struct qedr_dev *dev, u8 port_num,
+			    enum ib_event_type type)
+{
+	struct ib_event ibev;
+
+	ibev.device = &dev->ibdev;
+	ibev.element.port_num = port_num;
+	ibev.event = type;
+
+	ib_dispatch_event(&ibev);
+}
+
+static enum rdma_link_layer qedr_link_layer(struct ib_device *device,
+					    u8 port_num)
+{
+	return IB_LINK_LAYER_ETHERNET;
+}
+
+static int qedr_register_device(struct qedr_dev *dev)
+{
+	strlcpy(dev->ibdev.name, "qedr%d", IB_DEVICE_NAME_MAX);
+
+	memcpy(dev->ibdev.node_desc, QEDR_NODE_DESC, sizeof(QEDR_NODE_DESC));
+	dev->ibdev.owner = THIS_MODULE;
+
+	dev->ibdev.get_link_layer = qedr_link_layer;
+
+	return 0;
+}
+
+/* QEDR sysfs interface */
+static ssize_t show_rev(struct device *device, struct device_attribute *attr,
+			char *buf)
+{
+	struct qedr_dev *dev = dev_get_drvdata(device);
+
+	return scnprintf(buf, PAGE_SIZE, "0x%x\n", dev->pdev->vendor);
+}
+
+static ssize_t show_hca_type(struct device *device,
+			     struct device_attribute *attr, char *buf)
+{
+	return scnprintf(buf, PAGE_SIZE, "%s\n", "HCA_TYPE_TO_SET");
+}
+
+static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
+static DEVICE_ATTR(hca_type, S_IRUGO, show_hca_type, NULL);
+
+static struct device_attribute *qedr_attributes[] = {
+	&dev_attr_hw_rev,
+	&dev_attr_hca_type
+};
+
+static void qedr_remove_sysfiles(struct qedr_dev *dev)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(qedr_attributes); i++)
+		device_remove_file(&dev->ibdev.dev, qedr_attributes[i]);
+}
+
+static void qedr_pci_set_atomic(struct qedr_dev *dev, struct pci_dev *pdev)
+{
+	struct pci_dev *bridge;
+	u32 val;
+
+	dev->atomic_cap = IB_ATOMIC_NONE;
+
+	bridge = pdev->bus->self;
+	if (!bridge)
+		return;
+
+	/* Check whether we are connected directly or via a switch */
+	while (bridge && bridge->bus->parent) {
+		DP_DEBUG(dev, QEDR_MSG_INIT,
+			 "Device is not connected directly to root. bridge->bus->number=%d primary=%d\n",
+			 bridge->bus->number, bridge->bus->primary);
+		/* Need to check Atomic Op Routing Supported all the way to
+		 * root complex.
+		 */
+		pcie_capability_read_dword(bridge, PCI_EXP_DEVCAP2, &val);
+		if (!(val & PCI_EXP_DEVCAP2_ATOMIC_ROUTE)) {
+			pcie_capability_clear_word(pdev,
+						   PCI_EXP_DEVCTL2,
+						   PCI_EXP_DEVCTL2_ATOMIC_REQ);
+			return;
+		}
+		bridge = bridge->bus->parent->self;
+	}
+	bridge = pdev->bus->self;
+
+	/* according to bridge capability */
+	pcie_capability_read_dword(bridge, PCI_EXP_DEVCAP2, &val);
+	if (val & PCI_EXP_DEVCAP2_ATOMIC_COMP64) {
+		pcie_capability_set_word(pdev, PCI_EXP_DEVCTL2,
+					 PCI_EXP_DEVCTL2_ATOMIC_REQ);
+		dev->atomic_cap = IB_ATOMIC_GLOB;
+	} else {
+		pcie_capability_clear_word(pdev, PCI_EXP_DEVCTL2,
+					   PCI_EXP_DEVCTL2_ATOMIC_REQ);
+	}
+}
+
+static struct qedr_dev *qedr_add(struct qed_dev *cdev, struct pci_dev *pdev,
+				 struct net_device *ndev)
+{
+	struct qedr_dev *dev;
+	int rc = 0, i;
+
+	dev = (struct qedr_dev *)ib_alloc_device(sizeof(*dev));
+	if (!dev) {
+		pr_err("Unable to allocate ib device\n");
+		return NULL;
+	}
+
+	DP_DEBUG(dev, QEDR_MSG_INIT, "qedr add device called\n");
+
+	dev->pdev = pdev;
+	dev->ndev = ndev;
+	dev->cdev = cdev;
+
+	qedr_pci_set_atomic(dev, pdev);
+
+	rc = qedr_register_device(dev);
+	if (rc) {
+		DP_ERR(dev, "Unable to allocate register device\n");
+		goto init_err;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(qedr_attributes); i++)
+		if (device_create_file(&dev->ibdev.dev, qedr_attributes[i]))
+			goto init_err;
+
+	DP_DEBUG(dev, QEDR_MSG_INIT, "qedr driver loaded successfully\n");
+	return dev;
+
+init_err:
+	ib_dealloc_device(&dev->ibdev);
+	DP_ERR(dev, "qedr driver load failed rc=%d\n", rc);
+
+	return NULL;
+}
+
+static void qedr_remove(struct qedr_dev *dev)
+{
+	/* First unregister with stack to stop all the active traffic
+	 * of the registered clients.
+	 */
+	qedr_remove_sysfiles(dev);
+
+	ib_dealloc_device(&dev->ibdev);
+}
+
+static int qedr_close(struct qedr_dev *dev)
+{
+	qedr_ib_dispatch_event(dev, 1, IB_EVENT_PORT_ERR);
+
+	return 0;
+}
+
+static void qedr_shutdown(struct qedr_dev *dev)
+{
+	qedr_close(dev);
+	qedr_remove(dev);
+}
+
+/* event handling via NIC driver ensures that all the NIC specific
+ * initialization done before RoCE driver notifies
+ * event to stack.
+ */
+static void qedr_notify(struct qedr_dev *dev, enum qede_roce_event event)
+{
+	switch (event) {
+	case QEDE_UP:
+		qedr_ib_dispatch_event(dev, 1, IB_EVENT_PORT_ACTIVE);
+		break;
+	case QEDE_DOWN:
+		qedr_close(dev);
+		break;
+	case QEDE_CLOSE:
+		qedr_shutdown(dev);
+		break;
+	case QEDE_CHANGE_ADDR:
+		qedr_ib_dispatch_event(dev, 1, IB_EVENT_GID_CHANGE);
+		break;
+	default:
+		pr_err("Event not supported\n");
+	}
+}
+
+static struct qedr_driver qedr_drv = {
+	.name = "qedr_driver",
+	.add = qedr_add,
+	.remove = qedr_remove,
+	.notify = qedr_notify,
+};
+
+static int __init qedr_init_module(void)
+{
+	return qede_roce_register_driver(&qedr_drv);
+}
+
+static void __exit qedr_exit_module(void)
+{
+	qede_roce_unregister_driver(&qedr_drv);
+}
+
+module_init(qedr_init_module);
+module_exit(qedr_exit_module);
diff --git a/drivers/infiniband/hw/qedr/qedr.h b/drivers/infiniband/hw/qedr/qedr.h
new file mode 100644
index 0000000..8014170
--- /dev/null
+++ b/drivers/infiniband/hw/qedr/qedr.h
@@ -0,0 +1,61 @@
+/* QLogic qedr NIC Driver
+ * Copyright (c) 2015-2016  QLogic Corporation
+ *
+ * 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 __QEDR_H__
+#define __QEDR_H__
+
+#include <linux/pci.h>
+#include <rdma/ib_addr.h>
+#include <linux/qed/qed_if.h>
+#include <linux/qed/qede_roce.h>
+
+#define QEDR_MODULE_VERSION	"8.10.10.0"
+#define QEDR_NODE_DESC "QLogic 579xx RoCE HCA"
+#define DP_NAME(dev) ((dev)->ibdev.name)
+
+#define DP_DEBUG(dev, module, fmt, ...)					\
+	pr_debug("(%s) " module ": " fmt,				\
+		 DP_NAME(dev) ? DP_NAME(dev) : "", ## __VA_ARGS__)
+
+#define QEDR_MSG_INIT "INIT"
+
+struct qedr_dev {
+	struct ib_device	ibdev;
+	struct qed_dev		*cdev;
+	struct pci_dev		*pdev;
+	struct net_device	*ndev;
+
+	enum ib_atomic_cap	atomic_cap;
+
+	u32			dp_module;
+	u8			dp_level;
+};
+#endif
diff --git a/drivers/net/ethernet/qlogic/Kconfig b/drivers/net/ethernet/qlogic/Kconfig
index 0df1391f9..1e8339a 100644
--- a/drivers/net/ethernet/qlogic/Kconfig
+++ b/drivers/net/ethernet/qlogic/Kconfig
@@ -107,15 +107,4 @@ config QEDE
 	---help---
 	  This enables the support for ...
 
-config INFINIBAND_QEDR
-	tristate "QLogic qede RoCE sources [debug]"
-	depends on QEDE && 64BIT
-	select QED_LL2
-	default n
-	---help---
-	  This provides a temporary node that allows the compilation
-	  and logical testing of the InfiniBand over Ethernet support
-	  for QLogic QED. This would be replaced by the 'real' option
-	  once the QEDR driver is added [+relocated].
-
 endif # NET_VENDOR_QLOGIC
diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
index 4040951..30d66b5 100644
--- a/include/uapi/linux/pci_regs.h
+++ b/include/uapi/linux/pci_regs.h
@@ -612,6 +612,8 @@
  */
 #define PCI_EXP_DEVCAP2		36	/* Device Capabilities 2 */
 #define  PCI_EXP_DEVCAP2_ARI		0x00000020 /* Alternative Routing-ID */
+#define  PCI_EXP_DEVCAP2_ATOMIC_ROUTE	0x00000040 /* Atomic Op routing */
+#define PCI_EXP_DEVCAP2_ATOMIC_COMP64	0x00000100 /* Atomic 64-bit compare */
 #define  PCI_EXP_DEVCAP2_LTR		0x00000800 /* Latency tolerance reporting */
 #define  PCI_EXP_DEVCAP2_OBFF_MASK	0x000c0000 /* OBFF support mechanism */
 #define  PCI_EXP_DEVCAP2_OBFF_MSG	0x00040000 /* New message signaling */
@@ -619,6 +621,7 @@
 #define PCI_EXP_DEVCTL2		40	/* Device Control 2 */
 #define  PCI_EXP_DEVCTL2_COMP_TIMEOUT	0x000f	/* Completion Timeout Value */
 #define  PCI_EXP_DEVCTL2_ARI		0x0020	/* Alternative Routing-ID */
+#define PCI_EXP_DEVCTL2_ATOMIC_REQ	0x0040	/* Set Atomic requests */
 #define  PCI_EXP_DEVCTL2_IDO_REQ_EN	0x0100	/* Allow IDO for requests */
 #define  PCI_EXP_DEVCTL2_IDO_CMP_EN	0x0200	/* Allow IDO for completions */
 #define  PCI_EXP_DEVCTL2_LTR_EN		0x0400	/* Enable LTR mechanism */
-- 
1.8.3.1

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[PATCH qedr 02/10] qedr: Add support for RoCE HW init

[Ram Amrani]

Allocate and setup RoCE resources, interrupts and completion queues.
Adds device attributes.

Signed-off-by: Rajesh Borundia <rajesh.borundia-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
Signed-off-by: Ram Amrani <Ram.Amrani-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
---
 drivers/infiniband/hw/qedr/main.c          | 418 ++++++++++++++++++++++++++++-
 drivers/infiniband/hw/qedr/qedr.h          | 123 +++++++++
 drivers/infiniband/hw/qedr/qedr_hsi.h      |  56 ++++
 drivers/infiniband/hw/qedr/qedr_hsi_rdma.h |  96 +++++++
 4 files changed, 691 insertions(+), 2 deletions(-)
 create mode 100644 drivers/infiniband/hw/qedr/qedr_hsi.h
 create mode 100644 drivers/infiniband/hw/qedr/qedr_hsi_rdma.h

diff --git a/drivers/infiniband/hw/qedr/main.c b/drivers/infiniband/hw/qedr/main.c
index 7387d02..8d299bb 100644
--- a/drivers/infiniband/hw/qedr/main.c
+++ b/drivers/infiniband/hw/qedr/main.c
@@ -36,6 +36,8 @@
 #include <linux/iommu.h>
 #include <net/addrconf.h>
 #include <linux/qed/qede_roce.h>
+#include <linux/qed/qed_chain.h>
+#include <linux/qed/qed_if.h>
 #include "qedr.h"
 
 MODULE_DESCRIPTION("QLogic 40G/100G ROCE Driver");
@@ -61,6 +63,17 @@ static enum rdma_link_layer qedr_link_layer(struct ib_device *device,
 	return IB_LINK_LAYER_ETHERNET;
 }
 
+static void qedr_get_dev_fw_str(struct ib_device *ibdev, char *str,
+				size_t str_len)
+{
+	struct qedr_dev *qedr = get_qedr_dev(ibdev);
+	u32 fw_ver = (u32)qedr->attr.fw_ver;
+
+	snprintf(str, str_len, "%d. %d. %d. %d",
+		 (fw_ver >> 24) & 0xFF, (fw_ver >> 16) & 0xFF,
+		 (fw_ver >> 8) & 0xFF, fw_ver & 0xFF);
+}
+
 static int qedr_register_device(struct qedr_dev *dev)
 {
 	strlcpy(dev->ibdev.name, "qedr%d", IB_DEVICE_NAME_MAX);
@@ -69,10 +82,141 @@ static int qedr_register_device(struct qedr_dev *dev)
 	dev->ibdev.owner = THIS_MODULE;
 
 	dev->ibdev.get_link_layer = qedr_link_layer;
+	dev->ibdev.get_dev_fw_str = qedr_get_dev_fw_str;
 
 	return 0;
 }
 
+/* This function allocates fast-path status block memory */
+static int qedr_alloc_mem_sb(struct qedr_dev *dev,
+			     struct qed_sb_info *sb_info, u16 sb_id)
+{
+	struct status_block *sb_virt;
+	dma_addr_t sb_phys;
+	int rc;
+
+	sb_virt = dma_alloc_coherent(&dev->pdev->dev,
+				     sizeof(*sb_virt), &sb_phys, GFP_KERNEL);
+	if (!sb_virt) {
+		pr_err("Status block allocation failed\n");
+		return -ENOMEM;
+	}
+
+	rc = dev->ops->common->sb_init(dev->cdev, sb_info,
+				       sb_virt, sb_phys, sb_id,
+				       QED_SB_TYPE_CNQ);
+	if (rc) {
+		pr_err("Status block initialization failed\n");
+		dma_free_coherent(&dev->pdev->dev, sizeof(*sb_virt),
+				  sb_virt, sb_phys);
+		return rc;
+	}
+
+	return 0;
+}
+
+static void qedr_free_mem_sb(struct qedr_dev *dev,
+			     struct qed_sb_info *sb_info, int sb_id)
+{
+	if (sb_info->sb_virt) {
+		dev->ops->common->sb_release(dev->cdev, sb_info, sb_id);
+		dma_free_coherent(&dev->pdev->dev, sizeof(*sb_info->sb_virt),
+				  (void *)sb_info->sb_virt, sb_info->sb_phys);
+	}
+}
+
+static void qedr_free_resources(struct qedr_dev *dev)
+{
+	int i;
+
+	for (i = 0; i < dev->num_cnq; i++) {
+		qedr_free_mem_sb(dev, &dev->sb_array[i], dev->sb_start + i);
+		dev->ops->common->chain_free(dev->cdev, &dev->cnq_array[i].pbl);
+	}
+
+	kfree(dev->cnq_array);
+	kfree(dev->sb_array);
+	kfree(dev->sgid_tbl);
+}
+
+static int qedr_alloc_resources(struct qedr_dev *dev)
+{
+	struct qedr_cnq *cnq;
+	__le16 *cons_pi;
+	u16 n_entries;
+	int i, rc;
+
+	dev->sgid_tbl = kzalloc(sizeof(union ib_gid) *
+				QEDR_MAX_SGID, GFP_KERNEL);
+	if (!dev->sgid_tbl)
+		return -ENOMEM;
+
+	spin_lock_init(&dev->sgid_lock);
+
+	/* Allocate Status blocks for CNQ */
+	dev->sb_array = kcalloc(dev->num_cnq, sizeof(*dev->sb_array),
+				GFP_KERNEL);
+	if (!dev->sb_array) {
+		rc = -ENOMEM;
+		goto err1;
+	}
+
+	dev->cnq_array = kcalloc(dev->num_cnq,
+				 sizeof(*dev->cnq_array), GFP_KERNEL);
+	if (!dev->cnq_array) {
+		rc = -ENOMEM;
+		goto err2;
+	}
+
+	dev->sb_start = dev->ops->rdma_get_start_sb(dev->cdev);
+
+	/* Allocate CNQ PBLs */
+	n_entries = min_t(u32, QED_RDMA_MAX_CNQ_SIZE, QEDR_ROCE_MAX_CNQ_SIZE);
+	for (i = 0; i < dev->num_cnq; i++) {
+		cnq = &dev->cnq_array[i];
+
+		rc = qedr_alloc_mem_sb(dev, &dev->sb_array[i],
+				       dev->sb_start + i);
+		if (rc)
+			goto err3;
+
+		rc = dev->ops->common->chain_alloc(dev->cdev,
+						   QED_CHAIN_USE_TO_CONSUME,
+						   QED_CHAIN_MODE_PBL,
+						   QED_CHAIN_CNT_TYPE_U16,
+						   n_entries,
+						   sizeof(struct regpair *),
+						   &cnq->pbl);
+		if (rc)
+			goto err4;
+
+		cnq->dev = dev;
+		cnq->sb = &dev->sb_array[i];
+		cons_pi = dev->sb_array[i].sb_virt->pi_array;
+		cnq->hw_cons_ptr = &cons_pi[QED_ROCE_PROTOCOL_INDEX];
+		cnq->index = i;
+		sprintf(cnq->name, "qedr%d@pci:%s", i, pci_name(dev->pdev));
+
+		DP_DEBUG(dev, QEDR_MSG_INIT, "cnq[%d].cons=%d\n",
+			 i, qed_chain_get_cons_idx(&cnq->pbl));
+	}
+
+	return 0;
+err4:
+	qedr_free_mem_sb(dev, &dev->sb_array[i], dev->sb_start + i);
+err3:
+	for (--i; i >= 0; i--) {
+		dev->ops->common->chain_free(dev->cdev, &dev->cnq_array[i].pbl);
+		qedr_free_mem_sb(dev, &dev->sb_array[i], dev->sb_start + i);
+	}
+	kfree(dev->cnq_array);
+err2:
+	kfree(dev->sb_array);
+err1:
+	kfree(dev->sgid_tbl);
+	return rc;
+}
+
 /* QEDR sysfs interface */
 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
 			char *buf)
@@ -146,9 +290,237 @@ static void qedr_pci_set_atomic(struct qedr_dev *dev, struct pci_dev *pdev)
 	}
 }
 
+static const struct qed_rdma_ops *qed_ops;
+
+#define HILO_U64(hi, lo)		((((u64)(hi)) << 32) + (lo))
+
+static irqreturn_t qedr_irq_handler(int irq, void *handle)
+{
+	u16 hw_comp_cons, sw_comp_cons;
+	struct qedr_cnq *cnq = handle;
+
+	qed_sb_ack(cnq->sb, IGU_INT_DISABLE, 0);
+
+	qed_sb_update_sb_idx(cnq->sb);
+
+	hw_comp_cons = le16_to_cpu(*cnq->hw_cons_ptr);
+	sw_comp_cons = qed_chain_get_cons_idx(&cnq->pbl);
+
+	/* Align protocol-index and chain reads */
+	rmb();
+
+	while (sw_comp_cons != hw_comp_cons) {
+		sw_comp_cons = qed_chain_get_cons_idx(&cnq->pbl);
+		cnq->n_comp++;
+	}
+
+	qed_ops->rdma_cnq_prod_update(cnq->dev->rdma_ctx, cnq->index,
+				      sw_comp_cons);
+
+	qed_sb_ack(cnq->sb, IGU_INT_ENABLE, 1);
+
+	return IRQ_HANDLED;
+}
+
+static void qedr_sync_free_irqs(struct qedr_dev *dev)
+{
+	u32 vector;
+	int i;
+
+	for (i = 0; i < dev->int_info.used_cnt; i++) {
+		if (dev->int_info.msix_cnt) {
+			vector = dev->int_info.msix[i * dev->num_hwfns].vector;
+			synchronize_irq(vector);
+			free_irq(vector, &dev->cnq_array[i]);
+		}
+	}
+
+	dev->int_info.used_cnt = 0;
+}
+
+static int qedr_req_msix_irqs(struct qedr_dev *dev)
+{
+	int i, rc = 0;
+
+	if (dev->num_cnq > dev->int_info.msix_cnt) {
+		DP_ERR(dev,
+		       "Interrupt mismatch: %d CNQ queues > %d MSI-x vectors\n",
+		       dev->num_cnq, dev->int_info.msix_cnt);
+		return -EINVAL;
+	}
+
+	for (i = 0; i < dev->num_cnq; i++) {
+		rc = request_irq(dev->int_info.msix[i * dev->num_hwfns].vector,
+				 qedr_irq_handler, 0, dev->cnq_array[i].name,
+				 &dev->cnq_array[i]);
+		if (rc) {
+			DP_ERR(dev, "Request cnq %d irq failed\n", i);
+			qedr_sync_free_irqs(dev);
+		} else {
+			DP_DEBUG(dev, QEDR_MSG_INIT,
+				 "Requested cnq irq for %s [entry %d]. Cookie is at %p\n",
+				 dev->cnq_array[i].name, i,
+				 &dev->cnq_array[i]);
+			dev->int_info.used_cnt++;
+		}
+	}
+
+	return rc;
+}
+
+static int qedr_setup_irqs(struct qedr_dev *dev)
+{
+	int rc;
+
+	DP_DEBUG(dev, QEDR_MSG_INIT, "qedr_setup_irqs\n");
+
+	/* Learn Interrupt configuration */
+	rc = dev->ops->rdma_set_rdma_int(dev->cdev, dev->num_cnq);
+	if (rc < 0)
+		return rc;
+	rc = dev->ops->rdma_get_rdma_int(dev->cdev, &dev->int_info);
+	if (rc) {
+		DP_DEBUG(dev, QEDR_MSG_INIT, "get_rdma_int failed\n");
+		return rc;
+	}
+
+	if (dev->int_info.msix_cnt) {
+		DP_DEBUG(dev, QEDR_MSG_INIT, "rdma msix_cnt = %d\n",
+			 dev->int_info.msix_cnt);
+		rc = qedr_req_msix_irqs(dev);
+		if (rc)
+			return rc;
+	}
+	DP_DEBUG(dev, QEDR_MSG_INIT, "qedr_setup_irqs succeeded\n");
+	return 0;
+}
+
+static int qedr_set_device_attr(struct qedr_dev *dev)
+{
+	struct qed_rdma_device *qed_attr;
+	struct qedr_device_attr *attr;
+	u32 page_size;
+
+	/* Part 1 - query core capabilities */
+	qed_attr = dev->ops->rdma_query_device(dev->rdma_ctx);
+
+	/* Part 2 - check capabilities */
+	page_size = ~dev->attr.page_size_caps + 1;
+	if (page_size > PAGE_SIZE) {
+		DP_ERR(dev,
+		       "Kernel PAGE_SIZE is %ld which is smaller than minimum page size (%d) required by qedr\n",
+		       PAGE_SIZE, page_size);
+		return -ENODEV;
+	}
+
+	/* Part 3 - copy and update capabilities */
+	attr = &dev->attr;
+	attr->vendor_id = qed_attr->vendor_id;
+	attr->vendor_part_id = qed_attr->vendor_part_id;
+	attr->hw_ver = qed_attr->hw_ver;
+	attr->fw_ver = qed_attr->fw_ver;
+	attr->node_guid = qed_attr->node_guid;
+	attr->sys_image_guid = qed_attr->sys_image_guid;
+	attr->max_cnq = qed_attr->max_cnq;
+	attr->max_sge = qed_attr->max_sge;
+	attr->max_inline = qed_attr->max_inline;
+	attr->max_sqe = min_t(u32, qed_attr->max_wqe, QEDR_MAX_SQE);
+	attr->max_rqe = min_t(u32, qed_attr->max_wqe, QEDR_MAX_RQE);
+	attr->max_qp_resp_rd_atomic_resc = qed_attr->max_qp_resp_rd_atomic_resc;
+	attr->max_qp_req_rd_atomic_resc = qed_attr->max_qp_req_rd_atomic_resc;
+	attr->max_dev_resp_rd_atomic_resc =
+	    qed_attr->max_dev_resp_rd_atomic_resc;
+	attr->max_cq = qed_attr->max_cq;
+	attr->max_qp = qed_attr->max_qp;
+	attr->max_mr = qed_attr->max_mr;
+	attr->max_mr_size = qed_attr->max_mr_size;
+	attr->max_cqe = min_t(u64, qed_attr->max_cqe, QEDR_MAX_CQES);
+	attr->max_mw = qed_attr->max_mw;
+	attr->max_fmr = qed_attr->max_fmr;
+	attr->max_mr_mw_fmr_pbl = qed_attr->max_mr_mw_fmr_pbl;
+	attr->max_mr_mw_fmr_size = qed_attr->max_mr_mw_fmr_size;
+	attr->max_pd = qed_attr->max_pd;
+	attr->max_ah = qed_attr->max_ah;
+	attr->max_pkey = qed_attr->max_pkey;
+	attr->max_srq = qed_attr->max_srq;
+	attr->max_srq_wr = qed_attr->max_srq_wr;
+	attr->dev_caps = qed_attr->dev_caps;
+	attr->page_size_caps = qed_attr->page_size_caps;
+	attr->dev_ack_delay = qed_attr->dev_ack_delay;
+	attr->reserved_lkey = qed_attr->reserved_lkey;
+	attr->bad_pkey_counter = qed_attr->bad_pkey_counter;
+	attr->max_stats_queues = qed_attr->max_stats_queues;
+
+	return 0;
+}
+
+static int qedr_init_hw(struct qedr_dev *dev)
+{
+	struct qed_rdma_add_user_out_params out_params;
+	struct qed_rdma_start_in_params *in_params;
+	struct qed_rdma_cnq_params *cur_pbl;
+	struct qed_rdma_events events;
+	dma_addr_t p_phys_table;
+	u32 page_cnt;
+	int rc = 0;
+	int i;
+
+	in_params =  kzalloc(sizeof(*in_params), GFP_KERNEL);
+	if (!in_params) {
+		rc = -ENOMEM;
+		goto out;
+	}
+
+	in_params->desired_cnq = dev->num_cnq;
+	for (i = 0; i < dev->num_cnq; i++) {
+		cur_pbl = &in_params->cnq_pbl_list[i];
+
+		page_cnt = qed_chain_get_page_cnt(&dev->cnq_array[i].pbl);
+		cur_pbl->num_pbl_pages = page_cnt;
+
+		p_phys_table = qed_chain_get_pbl_phys(&dev->cnq_array[i].pbl);
+		cur_pbl->pbl_ptr = (u64)p_phys_table;
+	}
+
+	events.context = dev;
+
+	in_params->events = &events;
+	in_params->cq_mode = QED_RDMA_CQ_MODE_32_BITS;
+	in_params->max_mtu = dev->ndev->mtu;
+	ether_addr_copy(&in_params->mac_addr[0], dev->ndev->dev_addr);
+
+	rc = dev->ops->rdma_init(dev->cdev, in_params);
+	if (rc)
+		goto out;
+
+	rc = dev->ops->rdma_add_user(dev->rdma_ctx, &out_params);
+	if (rc)
+		goto out;
+
+	dev->db_addr = (void *)(uintptr_t)out_params.dpi_addr;
+	dev->db_phys_addr = out_params.dpi_phys_addr;
+	dev->db_size = out_params.dpi_size;
+	dev->dpi = out_params.dpi;
+
+	rc = qedr_set_device_attr(dev);
+out:
+	kfree(in_params);
+	if (rc)
+		DP_ERR(dev, "Init HW Failed rc = %d\n", rc);
+
+	return rc;
+}
+
+void qedr_stop_hw(struct qedr_dev *dev)
+{
+	dev->ops->rdma_remove_user(dev->rdma_ctx, dev->dpi);
+	dev->ops->rdma_stop(dev->rdma_ctx);
+}
+
 static struct qedr_dev *qedr_add(struct qed_dev *cdev, struct pci_dev *pdev,
 				 struct net_device *ndev)
 {
+	struct qed_dev_rdma_info dev_info;
 	struct qedr_dev *dev;
 	int rc = 0, i;
 
@@ -164,21 +536,60 @@ static struct qedr_dev *qedr_add(struct qed_dev *cdev, struct pci_dev *pdev,
 	dev->ndev = ndev;
 	dev->cdev = cdev;
 
+	qed_ops = qed_get_rdma_ops();
+	if (!qed_ops) {
+		DP_ERR(dev, "Failed to get qed roce operations\n");
+		goto init_err;
+	}
+
+	dev->ops = qed_ops;
+	rc = qed_ops->fill_dev_info(cdev, &dev_info);
+	if (rc)
+		goto init_err;
+
+	dev->num_hwfns = dev_info.common.num_hwfns;
+	dev->rdma_ctx = dev->ops->rdma_get_rdma_ctx(cdev);
+
+	dev->num_cnq = dev->ops->rdma_get_min_cnq_msix(cdev);
+	if (!dev->num_cnq) {
+		DP_ERR(dev, "not enough CNQ resources.\n");
+		goto init_err;
+	}
+
+
 	qedr_pci_set_atomic(dev, pdev);
 
+	rc = qedr_alloc_resources(dev);
+	if (rc)
+		goto init_err;
+
+	rc = qedr_init_hw(dev);
+	if (rc)
+		goto alloc_err;
+
+	rc = qedr_setup_irqs(dev);
+	if (rc)
+		goto irq_err;
+
 	rc = qedr_register_device(dev);
 	if (rc) {
 		DP_ERR(dev, "Unable to allocate register device\n");
-		goto init_err;
+		goto reg_err;
 	}
 
 	for (i = 0; i < ARRAY_SIZE(qedr_attributes); i++)
 		if (device_create_file(&dev->ibdev.dev, qedr_attributes[i]))
-			goto init_err;
+			goto reg_err;
 
 	DP_DEBUG(dev, QEDR_MSG_INIT, "qedr driver loaded successfully\n");
 	return dev;
 
+reg_err:
+	qedr_sync_free_irqs(dev);
+irq_err:
+	qedr_stop_hw(dev);
+alloc_err:
+	qedr_free_resources(dev);
 init_err:
 	ib_dealloc_device(&dev->ibdev);
 	DP_ERR(dev, "qedr driver load failed rc=%d\n", rc);
@@ -193,6 +604,9 @@ static void qedr_remove(struct qedr_dev *dev)
 	 */
 	qedr_remove_sysfiles(dev);
 
+	qedr_stop_hw(dev);
+	qedr_sync_free_irqs(dev);
+	qedr_free_resources(dev);
 	ib_dealloc_device(&dev->ibdev);
 }
 
diff --git a/drivers/infiniband/hw/qedr/qedr.h b/drivers/infiniband/hw/qedr/qedr.h
index 8014170..1adbebb 100644
--- a/drivers/infiniband/hw/qedr/qedr.h
+++ b/drivers/infiniband/hw/qedr/qedr.h
@@ -35,7 +35,10 @@
 #include <linux/pci.h>
 #include <rdma/ib_addr.h>
 #include <linux/qed/qed_if.h>
+#include <linux/qed/qed_chain.h>
+#include <linux/qed/qed_roce_if.h>
 #include <linux/qed/qede_roce.h>
+#include "qedr_hsi.h"
 
 #define QEDR_MODULE_VERSION	"8.10.10.0"
 #define QEDR_NODE_DESC "QLogic 579xx RoCE HCA"
@@ -47,6 +50,60 @@
 
 #define QEDR_MSG_INIT "INIT"
 
+struct qedr_dev;
+
+struct qedr_cnq {
+	struct qedr_dev		*dev;
+	struct qed_chain	pbl;
+	struct qed_sb_info	*sb;
+	char			name[32];
+	u64			n_comp;
+	__le16			*hw_cons_ptr;
+	u8			index;
+};
+
+#define QEDR_MAX_SGID 128
+
+struct qedr_device_attr {
+	u32	vendor_id;
+	u32	vendor_part_id;
+	u32	hw_ver;
+	u64	fw_ver;
+	u64	node_guid;
+	u64	sys_image_guid;
+	u8	max_cnq;
+	u8	max_sge;
+	u16	max_inline;
+	u32	max_sqe;
+	u32	max_rqe;
+	u8	max_qp_resp_rd_atomic_resc;
+	u8	max_qp_req_rd_atomic_resc;
+	u64	max_dev_resp_rd_atomic_resc;
+	u32	max_cq;
+	u32	max_qp;
+	u32	max_mr;
+	u64	max_mr_size;
+	u32	max_cqe;
+	u32	max_mw;
+	u32	max_fmr;
+	u32	max_mr_mw_fmr_pbl;
+	u64	max_mr_mw_fmr_size;
+	u32	max_pd;
+	u32	max_ah;
+	u8	max_pkey;
+	u32	max_srq;
+	u32	max_srq_wr;
+	u8	max_srq_sge;
+	u8	max_stats_queues;
+	u32	dev_caps;
+
+	u64	page_size_caps;
+	u8	dev_ack_delay;
+	u32	reserved_lkey;
+	u32	bad_pkey_counter;
+	struct qed_rdma_events events;
+};
+
 struct qedr_dev {
 	struct ib_device	ibdev;
 	struct qed_dev		*cdev;
@@ -55,7 +112,73 @@ struct qedr_dev {
 
 	enum ib_atomic_cap	atomic_cap;
 
+	void *rdma_ctx;
+	struct qedr_device_attr attr;
+
+	const struct qed_rdma_ops *ops;
+	struct qed_int_info	int_info;
+
+	struct qed_sb_info	*sb_array;
+	struct qedr_cnq		*cnq_array;
+	int			num_cnq;
+	int			sb_start;
+
+	void __iomem		*db_addr;
+	u64			db_phys_addr;
+	u32			db_size;
+	u16			dpi;
+
+	union ib_gid *sgid_tbl;
+
+	/* Lock for sgid table */
+	spinlock_t sgid_lock;
+
+	u64			guid;
+
 	u32			dp_module;
 	u8			dp_level;
+	u8			num_hwfns;
 };
+
+#define QEDR_MAX_SQ_PBL			(0x8000)
+#define QEDR_MAX_SQ_PBL_ENTRIES		(0x10000 / sizeof(void *))
+#define QEDR_SQE_ELEMENT_SIZE		(sizeof(struct rdma_sq_sge))
+#define QEDR_MAX_SQE_ELEMENTS_PER_SQE	(ROCE_REQ_MAX_SINGLE_SQ_WQE_SIZE / \
+					 QEDR_SQE_ELEMENT_SIZE)
+#define QEDR_MAX_SQE_ELEMENTS_PER_PAGE	((RDMA_RING_PAGE_SIZE) / \
+					 QEDR_SQE_ELEMENT_SIZE)
+#define QEDR_MAX_SQE			((QEDR_MAX_SQ_PBL_ENTRIES) *\
+					 (RDMA_RING_PAGE_SIZE) / \
+					 (QEDR_SQE_ELEMENT_SIZE) /\
+					 (QEDR_MAX_SQE_ELEMENTS_PER_SQE))
+/* RQ */
+#define QEDR_MAX_RQ_PBL			(0x2000)
+#define QEDR_MAX_RQ_PBL_ENTRIES		(0x10000 / sizeof(void *))
+#define QEDR_RQE_ELEMENT_SIZE		(sizeof(struct rdma_rq_sge))
+#define QEDR_MAX_RQE_ELEMENTS_PER_RQE	(RDMA_MAX_SGE_PER_RQ_WQE)
+#define QEDR_MAX_RQE_ELEMENTS_PER_PAGE	((RDMA_RING_PAGE_SIZE) / \
+					 QEDR_RQE_ELEMENT_SIZE)
+#define QEDR_MAX_RQE			((QEDR_MAX_RQ_PBL_ENTRIES) *\
+					 (RDMA_RING_PAGE_SIZE) / \
+					 (QEDR_RQE_ELEMENT_SIZE) /\
+					 (QEDR_MAX_RQE_ELEMENTS_PER_RQE))
+
+#define QEDR_CQE_SIZE	(sizeof(union rdma_cqe))
+#define QEDR_MAX_CQE_PBL_SIZE (512 * 1024)
+#define QEDR_MAX_CQE_PBL_ENTRIES (((QEDR_MAX_CQE_PBL_SIZE) / \
+				  sizeof(u64)) - 1)
+#define QEDR_MAX_CQES ((u32)((QEDR_MAX_CQE_PBL_ENTRIES) * \
+			     (QED_CHAIN_PAGE_SIZE) / QEDR_CQE_SIZE))
+
+#define QEDR_ROCE_MAX_CNQ_SIZE		(0x4000)
+
+#define QEDR_MAX_PORT			(1)
+
+#define QEDR_UVERBS(CMD_NAME) (1ull << IB_USER_VERBS_CMD_##CMD_NAME)
+
+static inline struct qedr_dev *get_qedr_dev(struct ib_device *ibdev)
+{
+	return container_of(ibdev, struct qedr_dev, ibdev);
+}
+
 #endif
diff --git a/drivers/infiniband/hw/qedr/qedr_hsi.h b/drivers/infiniband/hw/qedr/qedr_hsi.h
new file mode 100644
index 0000000..66d2752
--- /dev/null
+++ b/drivers/infiniband/hw/qedr/qedr_hsi.h
@@ -0,0 +1,56 @@
+/* QLogic qedr NIC Driver
+ * Copyright (c) 2015-2016  QLogic Corporation
+ *
+ * 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 __QED_HSI_ROCE__
+#define __QED_HSI_ROCE__
+
+#include <linux/qed/common_hsi.h>
+#include <linux/qed/roce_common.h>
+#include "qedr_hsi_rdma.h"
+
+/* Affiliated asynchronous events / errors enumeration */
+enum roce_async_events_type {
+	ROCE_ASYNC_EVENT_NONE = 0,
+	ROCE_ASYNC_EVENT_COMM_EST = 1,
+	ROCE_ASYNC_EVENT_SQ_DRAINED,
+	ROCE_ASYNC_EVENT_SRQ_LIMIT,
+	ROCE_ASYNC_EVENT_LAST_WQE_REACHED,
+	ROCE_ASYNC_EVENT_CQ_ERR,
+	ROCE_ASYNC_EVENT_LOCAL_INVALID_REQUEST_ERR,
+	ROCE_ASYNC_EVENT_LOCAL_CATASTROPHIC_ERR,
+	ROCE_ASYNC_EVENT_LOCAL_ACCESS_ERR,
+	ROCE_ASYNC_EVENT_QP_CATASTROPHIC_ERR,
+	ROCE_ASYNC_EVENT_CQ_OVERFLOW_ERR,
+	ROCE_ASYNC_EVENT_SRQ_EMPTY,
+	MAX_ROCE_ASYNC_EVENTS_TYPE
+};
+
+#endif /* __QED_HSI_ROCE__ */
diff --git a/drivers/infiniband/hw/qedr/qedr_hsi_rdma.h b/drivers/infiniband/hw/qedr/qedr_hsi_rdma.h
new file mode 100644
index 0000000..3e508fb
--- /dev/null
+++ b/drivers/infiniband/hw/qedr/qedr_hsi_rdma.h
@@ -0,0 +1,96 @@
+/* QLogic qedr NIC Driver
+ * Copyright (c) 2015-2016  QLogic Corporation
+ *
+ * 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 __QED_HSI_RDMA__
+#define __QED_HSI_RDMA__
+
+#include <linux/qed/rdma_common.h>
+
+/* rdma completion notification queue element */
+struct rdma_cnqe {
+	struct regpair	cq_handle;
+};
+
+struct rdma_cqe_responder {
+	struct regpair srq_wr_id;
+	struct regpair qp_handle;
+	__le32 imm_data_or_inv_r_Key;
+	__le32 length;
+	__le32 imm_data_hi;
+	__le16 rq_cons;
+	u8 flags;
+};
+
+struct rdma_cqe_requester {
+	__le16 sq_cons;
+	__le16 reserved0;
+	__le32 reserved1;
+	struct regpair qp_handle;
+	struct regpair reserved2;
+	__le32 reserved3;
+	__le16 reserved4;
+	u8 flags;
+	u8 status;
+};
+
+struct rdma_cqe_common {
+	struct regpair reserved0;
+	struct regpair qp_handle;
+	__le16 reserved1[7];
+	u8 flags;
+	u8 status;
+};
+
+/* rdma completion queue element */
+union rdma_cqe {
+	struct rdma_cqe_responder resp;
+	struct rdma_cqe_requester req;
+	struct rdma_cqe_common cmn;
+};
+
+struct rdma_sq_sge {
+	__le32 length;
+	struct regpair	addr;
+	__le32 l_key;
+};
+
+struct rdma_rq_sge {
+	struct regpair addr;
+	__le32 length;
+	__le32 flags;
+};
+
+struct rdma_srq_sge {
+	struct regpair addr;
+	__le32 length;
+	__le32 l_key;
+};
+#endif /* __QED_HSI_RDMA__ */
-- 
1.8.3.1

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[PATCH qedr 03/10] qedr: Add support for user context verbs

[Ram Amrani]

Add support for ucontext, query port, add and del gid verbs.

Signed-off-by: Rajesh Borundia <rajesh.borundia-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
Signed-off-by: Ram Amrani <Ram.Amrani-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
---
 drivers/infiniband/hw/qedr/Makefile |   2 +-
 drivers/infiniband/hw/qedr/main.c   |  26 +++
 drivers/infiniband/hw/qedr/qedr.h   |  34 +++
 drivers/infiniband/hw/qedr/verbs.c  | 455 ++++++++++++++++++++++++++++++++++++
 drivers/infiniband/hw/qedr/verbs.h  |  52 +++++
 include/uapi/rdma/qedr-abi.h        |  53 +++++
 6 files changed, 621 insertions(+), 1 deletion(-)
 create mode 100644 drivers/infiniband/hw/qedr/verbs.c
 create mode 100644 drivers/infiniband/hw/qedr/verbs.h
 create mode 100644 include/uapi/rdma/qedr-abi.h

diff --git a/drivers/infiniband/hw/qedr/Makefile b/drivers/infiniband/hw/qedr/Makefile
index 3a5b7a2..b10f2b1 100644
--- a/drivers/infiniband/hw/qedr/Makefile
+++ b/drivers/infiniband/hw/qedr/Makefile
@@ -1,3 +1,3 @@
 obj-$(CONFIG_INFINIBAND_QEDR) := qedr.o
 
-qedr-y := main.o
+qedr-y := main.o verbs.o
diff --git a/drivers/infiniband/hw/qedr/main.c b/drivers/infiniband/hw/qedr/main.c
index 8d299bb..7c6d8a7 100644
--- a/drivers/infiniband/hw/qedr/main.c
+++ b/drivers/infiniband/hw/qedr/main.c
@@ -32,6 +32,7 @@
 #include <linux/module.h>
 #include <rdma/ib_verbs.h>
 #include <rdma/ib_addr.h>
+#include <rdma/ib_user_verbs.h>
 #include <linux/netdevice.h>
 #include <linux/iommu.h>
 #include <net/addrconf.h>
@@ -39,6 +40,8 @@
 #include <linux/qed/qed_chain.h>
 #include <linux/qed/qed_if.h>
 #include "qedr.h"
+#include "verbs.h"
+#include <rdma/qedr-abi.h>
 
 MODULE_DESCRIPTION("QLogic 40G/100G ROCE Driver");
 MODULE_AUTHOR("QLogic Corporation");
@@ -80,6 +83,29 @@ static int qedr_register_device(struct qedr_dev *dev)
 
 	memcpy(dev->ibdev.node_desc, QEDR_NODE_DESC, sizeof(QEDR_NODE_DESC));
 	dev->ibdev.owner = THIS_MODULE;
+	dev->ibdev.uverbs_abi_ver = QEDR_ABI_VERSION;
+
+	dev->ibdev.uverbs_cmd_mask = QEDR_UVERBS(GET_CONTEXT) |
+				     QEDR_UVERBS(QUERY_DEVICE) |
+				     QEDR_UVERBS(QUERY_PORT);
+
+	dev->ibdev.phys_port_cnt = 1;
+	dev->ibdev.num_comp_vectors = dev->num_cnq;
+	dev->ibdev.node_type = RDMA_NODE_IB_CA;
+
+	dev->ibdev.query_device = qedr_query_device;
+	dev->ibdev.query_port = qedr_query_port;
+	dev->ibdev.modify_port = qedr_modify_port;
+
+	dev->ibdev.query_gid = qedr_query_gid;
+	dev->ibdev.add_gid = qedr_add_gid;
+	dev->ibdev.del_gid = qedr_del_gid;
+
+	dev->ibdev.alloc_ucontext = qedr_alloc_ucontext;
+	dev->ibdev.dealloc_ucontext = qedr_dealloc_ucontext;
+	dev->ibdev.mmap = qedr_mmap;
+
+	dev->ibdev.dma_device = &dev->pdev->dev;
 
 	dev->ibdev.get_link_layer = qedr_link_layer;
 	dev->ibdev.get_dev_fw_str = qedr_get_dev_fw_str;
diff --git a/drivers/infiniband/hw/qedr/qedr.h b/drivers/infiniband/hw/qedr/qedr.h
index 1adbebb..2091c0d 100644
--- a/drivers/infiniband/hw/qedr/qedr.h
+++ b/drivers/infiniband/hw/qedr/qedr.h
@@ -49,6 +49,7 @@
 		 DP_NAME(dev) ? DP_NAME(dev) : "", ## __VA_ARGS__)
 
 #define QEDR_MSG_INIT "INIT"
+#define QEDR_MSG_MISC "MISC"
 
 struct qedr_dev;
 
@@ -176,6 +177,39 @@ struct qedr_dev {
 
 #define QEDR_UVERBS(CMD_NAME) (1ull << IB_USER_VERBS_CMD_##CMD_NAME)
 
+#define QEDR_ROCE_PKEY_MAX 1
+#define QEDR_ROCE_PKEY_TABLE_LEN 1
+#define QEDR_ROCE_PKEY_DEFAULT 0xffff
+
+struct qedr_ucontext {
+	struct ib_ucontext ibucontext;
+	struct qedr_dev *dev;
+	struct qedr_pd *pd;
+	u64 dpi_addr;
+	u64 dpi_phys_addr;
+	u32 dpi_size;
+	u16 dpi;
+
+	struct list_head mm_head;
+
+	/* Lock to protect mm list */
+	struct mutex mm_list_lock;
+};
+
+struct qedr_mm {
+	struct {
+		u64 phy_addr;
+		unsigned long len;
+	} key;
+	struct list_head entry;
+};
+
+static inline
+struct qedr_ucontext *get_qedr_ucontext(struct ib_ucontext *ibucontext)
+{
+	return container_of(ibucontext, struct qedr_ucontext, ibucontext);
+}
+
 static inline struct qedr_dev *get_qedr_dev(struct ib_device *ibdev)
 {
 	return container_of(ibdev, struct qedr_dev, ibdev);
diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c
new file mode 100644
index 0000000..ab5f11a
--- /dev/null
+++ b/drivers/infiniband/hw/qedr/verbs.c
@@ -0,0 +1,455 @@
+/* QLogic qedr NIC Driver
+ * Copyright (c) 2015-2016  QLogic Corporation
+ *
+ * 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.
+ */
+#include <linux/dma-mapping.h>
+#include <linux/crc32.h>
+#include <net/ip.h>
+#include <net/ipv6.h>
+#include <net/udp.h>
+#include <linux/iommu.h>
+
+#include <rdma/ib_verbs.h>
+#include <rdma/ib_user_verbs.h>
+#include <rdma/iw_cm.h>
+#include <rdma/ib_umem.h>
+#include <rdma/ib_addr.h>
+#include <rdma/ib_cache.h>
+
+#include "qedr_hsi.h"
+#include <linux/qed/qed_if.h>
+#include "qedr.h"
+#include "verbs.h"
+#include <rdma/qedr-abi.h>
+
+int qedr_query_gid(struct ib_device *ibdev, u8 port, int index,
+		   union ib_gid *sgid)
+{
+	struct qedr_dev *dev = get_qedr_dev(ibdev);
+	int rc = 0;
+
+	if (!rdma_cap_roce_gid_table(ibdev, port))
+		return -ENODEV;
+
+	rc = ib_get_cached_gid(ibdev, port, index, sgid, NULL);
+	if (rc == -EAGAIN) {
+		memcpy(sgid, &zgid, sizeof(*sgid));
+		return 0;
+	}
+
+	DP_DEBUG(dev, QEDR_MSG_INIT, "query gid: index=%d %llx:%llx\n", index,
+		 sgid->global.interface_id, sgid->global.subnet_prefix);
+
+	return rc;
+}
+
+int qedr_add_gid(struct ib_device *device, u8 port_num,
+		 unsigned int index, const union ib_gid *gid,
+		 const struct ib_gid_attr *attr, void **context)
+{
+	if (!rdma_cap_roce_gid_table(device, port_num))
+		return -EINVAL;
+
+	if (port_num > QEDR_MAX_PORT)
+		return -EINVAL;
+
+	if (!context)
+		return -EINVAL;
+
+	return 0;
+}
+
+int qedr_del_gid(struct ib_device *device, u8 port_num,
+		 unsigned int index, void **context)
+{
+	if (!rdma_cap_roce_gid_table(device, port_num))
+		return -EINVAL;
+
+	if (port_num > QEDR_MAX_PORT)
+		return -EINVAL;
+
+	if (!context)
+		return -EINVAL;
+
+	return 0;
+}
+
+int qedr_query_device(struct ib_device *ibdev,
+		      struct ib_device_attr *attr, struct ib_udata *udata)
+{
+	struct qedr_dev *dev = get_qedr_dev(ibdev);
+	struct qedr_device_attr *qattr = &dev->attr;
+
+	if (!dev->rdma_ctx) {
+		DP_ERR(dev,
+		       "qedr_query_device called with invalid params rdma_ctx=%p\n",
+		       dev->rdma_ctx);
+		return -EINVAL;
+	}
+
+	memset(attr, 0, sizeof(*attr));
+
+	attr->fw_ver = qattr->fw_ver;
+	attr->sys_image_guid = qattr->sys_image_guid;
+	attr->max_mr_size = qattr->max_mr_size;
+	attr->page_size_cap = qattr->page_size_caps;
+	attr->vendor_id = qattr->vendor_id;
+	attr->vendor_part_id = qattr->vendor_part_id;
+	attr->hw_ver = qattr->hw_ver;
+	attr->max_qp = qattr->max_qp;
+	attr->max_qp_wr = max_t(u32, qattr->max_sqe, qattr->max_rqe);
+	attr->device_cap_flags = IB_DEVICE_CURR_QP_STATE_MOD |
+	    IB_DEVICE_RC_RNR_NAK_GEN |
+	    IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_MGT_EXTENSIONS;
+
+	attr->max_sge = qattr->max_sge;
+	attr->max_sge_rd = qattr->max_sge;
+	attr->max_cq = qattr->max_cq;
+	attr->max_cqe = qattr->max_cqe;
+	attr->max_mr = qattr->max_mr;
+	attr->max_mw = qattr->max_mw;
+	attr->max_pd = qattr->max_pd;
+	attr->atomic_cap = dev->atomic_cap;
+	attr->max_fmr = qattr->max_fmr;
+	attr->max_map_per_fmr = 16;
+	attr->max_qp_init_rd_atom =
+	    1 << (fls(qattr->max_qp_req_rd_atomic_resc) - 1);
+	attr->max_qp_rd_atom =
+	    min(1 << (fls(qattr->max_qp_resp_rd_atomic_resc) - 1),
+		attr->max_qp_init_rd_atom);
+
+	attr->max_srq = qattr->max_srq;
+	attr->max_srq_sge = qattr->max_srq_sge;
+	attr->max_srq_wr = qattr->max_srq_wr;
+
+	attr->local_ca_ack_delay = qattr->dev_ack_delay;
+	attr->max_fast_reg_page_list_len = qattr->max_mr / 8;
+	attr->max_pkeys = QEDR_ROCE_PKEY_MAX;
+	attr->max_ah = qattr->max_ah;
+
+	return 0;
+}
+
+#define QEDR_SPEED_SDR		(1)
+#define QEDR_SPEED_DDR		(2)
+#define QEDR_SPEED_QDR		(4)
+#define QEDR_SPEED_FDR10	(8)
+#define QEDR_SPEED_FDR		(16)
+#define QEDR_SPEED_EDR		(32)
+
+static inline void get_link_speed_and_width(int speed, u8 *ib_speed,
+					    u8 *ib_width)
+{
+	switch (speed) {
+	case 1000:
+		*ib_speed = QEDR_SPEED_SDR;
+		*ib_width = IB_WIDTH_1X;
+		break;
+	case 10000:
+		*ib_speed = QEDR_SPEED_QDR;
+		*ib_width = IB_WIDTH_1X;
+		break;
+
+	case 20000:
+		*ib_speed = QEDR_SPEED_DDR;
+		*ib_width = IB_WIDTH_4X;
+		break;
+
+	case 25000:
+		*ib_speed = QEDR_SPEED_EDR;
+		*ib_width = IB_WIDTH_1X;
+		break;
+
+	case 40000:
+		*ib_speed = QEDR_SPEED_QDR;
+		*ib_width = IB_WIDTH_4X;
+		break;
+
+	case 50000:
+		*ib_speed = QEDR_SPEED_QDR;
+		*ib_width = IB_WIDTH_4X;
+		break;
+
+	case 100000:
+		*ib_speed = QEDR_SPEED_EDR;
+		*ib_width = IB_WIDTH_4X;
+		break;
+
+	default:
+		/* Unsupported */
+		*ib_speed = QEDR_SPEED_SDR;
+		*ib_width = IB_WIDTH_1X;
+	}
+}
+
+int qedr_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *attr)
+{
+	struct qedr_dev *dev;
+	struct qed_rdma_port *rdma_port;
+
+	dev = get_qedr_dev(ibdev);
+	if (port > 1) {
+		DP_ERR(dev, "invalid_port=0x%x\n", port);
+		return -EINVAL;
+	}
+
+	if (!dev->rdma_ctx) {
+		DP_ERR(dev, "rdma_ctx is NULL\n");
+		return -EINVAL;
+	}
+
+	rdma_port = dev->ops->rdma_query_port(dev->rdma_ctx);
+	memset(attr, 0, sizeof(*attr));
+
+	if (rdma_port->port_state == QED_RDMA_PORT_UP) {
+		attr->state = IB_PORT_ACTIVE;
+		attr->phys_state = 5;
+	} else {
+		attr->state = IB_PORT_DOWN;
+		attr->phys_state = 3;
+	}
+	attr->max_mtu = IB_MTU_4096;
+	attr->active_mtu = iboe_get_mtu(dev->ndev->mtu);
+	attr->lid = 0;
+	attr->lmc = 0;
+	attr->sm_lid = 0;
+	attr->sm_sl = 0;
+	attr->port_cap_flags = IB_PORT_IP_BASED_GIDS;
+	attr->gid_tbl_len = QEDR_MAX_SGID;
+	attr->pkey_tbl_len = QEDR_ROCE_PKEY_TABLE_LEN;
+	attr->bad_pkey_cntr = rdma_port->pkey_bad_counter;
+	attr->qkey_viol_cntr = 0;
+	get_link_speed_and_width(rdma_port->link_speed,
+				 &attr->active_speed, &attr->active_width);
+	attr->max_msg_sz = rdma_port->max_msg_size;
+	attr->max_vl_num = 4;
+
+	return 0;
+}
+
+int qedr_modify_port(struct ib_device *ibdev, u8 port, int mask,
+		     struct ib_port_modify *props)
+{
+	struct qedr_dev *dev;
+
+	dev = get_qedr_dev(ibdev);
+	if (port > 1) {
+		DP_ERR(dev, "invalid_port=0x%x\n", port);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int qedr_add_mmap(struct qedr_ucontext *uctx, u64 phy_addr,
+			 unsigned long len)
+{
+	struct qedr_mm *mm;
+
+	mm = kzalloc(sizeof(*mm), GFP_KERNEL);
+	if (!mm)
+		return -ENOMEM;
+	mm->key.phy_addr = phy_addr;
+	/* This function might be called with a length which is not a multiple
+	 * of PAGE_SIZE, while the mapping is PAGE_SIZE grained and the kernel
+	 * forces this granularity by increasing the requested size if needed.
+	 * When qedr_mmap is called, it will search the list with the updated
+	 * length as a key. To prevent search failures, the length is rounded up
+	 * in advance to PAGE_SIZE.
+	 */
+	mm->key.len = roundup(len, PAGE_SIZE);
+	INIT_LIST_HEAD(&mm->entry);
+
+	mutex_lock(&uctx->mm_list_lock);
+	list_add(&mm->entry, &uctx->mm_head);
+	mutex_unlock(&uctx->mm_list_lock);
+
+	DP_DEBUG(uctx->dev, QEDR_MSG_MISC,
+		 "added (addr=0x%llx,len=0x%lx) for ctx=%p\n",
+		 (unsigned long long)mm->key.phy_addr,
+		 (unsigned long)mm->key.len, uctx);
+
+	return 0;
+}
+
+static bool qedr_search_mmap(struct qedr_ucontext *uctx, u64 phy_addr,
+			     unsigned long len)
+{
+	bool found = false;
+	struct qedr_mm *mm;
+
+	mutex_lock(&uctx->mm_list_lock);
+	list_for_each_entry(mm, &uctx->mm_head, entry) {
+		if (len != mm->key.len || phy_addr != mm->key.phy_addr)
+			continue;
+
+		found = true;
+		break;
+	}
+	mutex_unlock(&uctx->mm_list_lock);
+	DP_DEBUG(uctx->dev, QEDR_MSG_MISC,
+		 "searched for (addr=0x%llx,len=0x%lx) for ctx=%p, result=%d\n",
+		 mm->key.phy_addr, mm->key.len, uctx, found);
+
+	return found;
+}
+
+struct ib_ucontext *qedr_alloc_ucontext(struct ib_device *ibdev,
+					struct ib_udata *udata)
+{
+	int rc;
+	struct qedr_ucontext *ctx;
+	struct qedr_alloc_ucontext_resp uresp;
+	struct qedr_dev *dev = get_qedr_dev(ibdev);
+	struct qed_rdma_add_user_out_params oparams;
+
+	if (!udata)
+		return ERR_PTR(-EFAULT);
+
+	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
+	if (!ctx)
+		return ERR_PTR(-ENOMEM);
+
+	rc = dev->ops->rdma_add_user(dev->rdma_ctx, &oparams);
+	if (rc) {
+		DP_ERR(dev,
+		       "failed to allocate a DPI for a new RoCE application, rc=%d. To overcome this consider to increase the number of DPIs, increase the doorbell BAR size or just close unnecessary RoCE applications. In order to increase the number of DPIs consult the qedr readme\n",
+		       rc);
+		goto err;
+	}
+
+	ctx->dpi = oparams.dpi;
+	ctx->dpi_addr = oparams.dpi_addr;
+	ctx->dpi_phys_addr = oparams.dpi_phys_addr;
+	ctx->dpi_size = oparams.dpi_size;
+	INIT_LIST_HEAD(&ctx->mm_head);
+	mutex_init(&ctx->mm_list_lock);
+
+	memset(&uresp, 0, sizeof(uresp));
+
+	uresp.db_pa = ctx->dpi_phys_addr;
+	uresp.db_size = ctx->dpi_size;
+	uresp.max_send_wr = dev->attr.max_sqe;
+	uresp.max_recv_wr = dev->attr.max_rqe;
+	uresp.max_srq_wr = dev->attr.max_srq_wr;
+	uresp.sges_per_send_wr = QEDR_MAX_SQE_ELEMENTS_PER_SQE;
+	uresp.sges_per_recv_wr = QEDR_MAX_RQE_ELEMENTS_PER_RQE;
+	uresp.sges_per_srq_wr = dev->attr.max_srq_sge;
+	uresp.max_cqes = QEDR_MAX_CQES;
+
+	rc = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
+	if (rc)
+		goto err;
+
+	ctx->dev = dev;
+
+	rc = qedr_add_mmap(ctx, ctx->dpi_phys_addr, ctx->dpi_size);
+	if (rc)
+		goto err;
+
+	DP_DEBUG(dev, QEDR_MSG_INIT, "Allocating user context %p\n",
+		 &ctx->ibucontext);
+	return &ctx->ibucontext;
+
+err:
+	kfree(ctx);
+	return ERR_PTR(rc);
+}
+
+int qedr_dealloc_ucontext(struct ib_ucontext *ibctx)
+{
+	struct qedr_ucontext *uctx = get_qedr_ucontext(ibctx);
+	struct qedr_mm *mm, *tmp;
+	int status = 0;
+
+	DP_DEBUG(uctx->dev, QEDR_MSG_INIT, "Deallocating user context %p\n",
+		 uctx);
+	uctx->dev->ops->rdma_remove_user(uctx->dev->rdma_ctx, uctx->dpi);
+
+	list_for_each_entry_safe(mm, tmp, &uctx->mm_head, entry) {
+		DP_DEBUG(uctx->dev, QEDR_MSG_MISC,
+			 "deleted (addr=0x%llx,len=0x%lx) for ctx=%p\n",
+			 mm->key.phy_addr, mm->key.len, uctx);
+		list_del(&mm->entry);
+		kfree(mm);
+	}
+
+	kfree(uctx);
+	return status;
+}
+
+int qedr_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
+{
+	struct qedr_ucontext *ucontext = get_qedr_ucontext(context);
+	struct qedr_dev *dev = get_qedr_dev(context->device);
+	unsigned long vm_page = vma->vm_pgoff << PAGE_SHIFT;
+	u64 unmapped_db = dev->db_phys_addr;
+	unsigned long len = (vma->vm_end - vma->vm_start);
+	int rc = 0;
+	bool found;
+
+	DP_DEBUG(dev, QEDR_MSG_INIT,
+		 "qedr_mmap called vm_page=0x%lx vm_pgoff=0x%lx unmapped_db=0x%llx db_size=%x, len=%lx\n",
+		 vm_page, vma->vm_pgoff, unmapped_db, dev->db_size, len);
+	if (vma->vm_start & (PAGE_SIZE - 1)) {
+		DP_ERR(dev, "Vma_start not page aligned = %ld\n",
+		       vma->vm_start);
+		return -EINVAL;
+	}
+
+	found = qedr_search_mmap(ucontext, vm_page, len);
+	if (!found) {
+		DP_ERR(dev, "Vma_pgoff not found in mapped array = %ld\n",
+		       vma->vm_pgoff);
+		return -EINVAL;
+	}
+
+	DP_DEBUG(dev, QEDR_MSG_INIT, "Mapping doorbell bar\n");
+
+	if ((vm_page >= unmapped_db) && (vm_page <= (unmapped_db +
+						     dev->db_size))) {
+		DP_DEBUG(dev, QEDR_MSG_INIT, "Mapping doorbell bar\n");
+		if (vma->vm_flags & VM_READ) {
+			DP_ERR(dev, "Trying to map doorbell bar for read\n");
+			return -EPERM;
+		}
+
+		vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
+
+		rc = io_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
+					PAGE_SIZE, vma->vm_page_prot);
+	} else {
+		DP_DEBUG(dev, QEDR_MSG_INIT, "Mapping chains\n");
+		rc = remap_pfn_range(vma, vma->vm_start,
+				     vma->vm_pgoff, len, vma->vm_page_prot);
+	}
+	DP_DEBUG(dev, QEDR_MSG_INIT, "qedr_mmap return code: %d\n", rc);
+	return rc;
+}
diff --git a/drivers/infiniband/hw/qedr/verbs.h b/drivers/infiniband/hw/qedr/verbs.h
new file mode 100644
index 0000000..9472044
--- /dev/null
+++ b/drivers/infiniband/hw/qedr/verbs.h
@@ -0,0 +1,52 @@
+/* QLogic qedr NIC Driver
+ * Copyright (c) 2015-2016  QLogic Corporation
+ *
+ * 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 __QEDR_VERBS_H__
+#define __QEDR_VERBS_H__
+
+int qedr_query_device(struct ib_device *ibdev,
+		      struct ib_device_attr *attr, struct ib_udata *udata);
+int qedr_query_port(struct ib_device *, u8 port, struct ib_port_attr *props);
+int qedr_modify_port(struct ib_device *, u8 port, int mask,
+		     struct ib_port_modify *props);
+
+int qedr_query_gid(struct ib_device *, u8 port, int index, union ib_gid *gid);
+
+struct ib_ucontext *qedr_alloc_ucontext(struct ib_device *, struct ib_udata *);
+int qedr_dealloc_ucontext(struct ib_ucontext *);
+
+int qedr_mmap(struct ib_ucontext *, struct vm_area_struct *vma);
+int qedr_del_gid(struct ib_device *device, u8 port_num,
+		 unsigned int index, void **context);
+int qedr_add_gid(struct ib_device *device, u8 port_num,
+		 unsigned int index, const union ib_gid *gid,
+		 const struct ib_gid_attr *attr, void **context);
+#endif
diff --git a/include/uapi/rdma/qedr-abi.h b/include/uapi/rdma/qedr-abi.h
new file mode 100644
index 0000000..f7c7fff
--- /dev/null
+++ b/include/uapi/rdma/qedr-abi.h
@@ -0,0 +1,53 @@
+/* QLogic qedr NIC Driver
+ * Copyright (c) 2015-2016  QLogic Corporation
+ *
+ * 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 __QEDR_USER_H__
+#define __QEDR_USER_H__
+
+#include <linux/types.h>
+
+#define QEDR_ABI_VERSION		(8)
+
+/* user kernel communication data structures. */
+
+struct qedr_alloc_ucontext_resp {
+	__u64 db_pa;
+	__u32 db_size;
+
+	__u32 max_send_wr;
+	__u32 max_recv_wr;
+	__u32 max_srq_wr;
+	__u32 sges_per_send_wr;
+	__u32 sges_per_recv_wr;
+	__u32 sges_per_srq_wr;
+	__u32 max_cqes;
+};
+#endif /* __QEDR_USER_H__ */
-- 
1.8.3.1

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[PATCH qedr 04/10] qedr: Add support for PD,PKEY and CQ verbs

[Ram Amrani]

Add support for protection domain and completion queue verbs.

Signed-off-by: Rajesh Borundia <rajesh.borundia-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
Signed-off-by: Ram Amrani <Ram.Amrani-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
---
 drivers/infiniband/hw/qedr/main.c          |  48 ++-
 drivers/infiniband/hw/qedr/qedr.h          |  78 +++++
 drivers/infiniband/hw/qedr/qedr_hsi_rdma.h |  79 +++++
 drivers/infiniband/hw/qedr/verbs.c         | 543 +++++++++++++++++++++++++++++
 drivers/infiniband/hw/qedr/verbs.h         |  14 +
 include/uapi/rdma/qedr-abi.h               |  19 +
 6 files changed, 780 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/qedr/main.c b/drivers/infiniband/hw/qedr/main.c
index 7c6d8a7..dc7f072 100644
--- a/drivers/infiniband/hw/qedr/main.c
+++ b/drivers/infiniband/hw/qedr/main.c
@@ -87,7 +87,14 @@ static int qedr_register_device(struct qedr_dev *dev)
 
 	dev->ibdev.uverbs_cmd_mask = QEDR_UVERBS(GET_CONTEXT) |
 				     QEDR_UVERBS(QUERY_DEVICE) |
-				     QEDR_UVERBS(QUERY_PORT);
+				     QEDR_UVERBS(QUERY_PORT) |
+				     QEDR_UVERBS(ALLOC_PD) |
+				     QEDR_UVERBS(DEALLOC_PD) |
+				     QEDR_UVERBS(CREATE_COMP_CHANNEL) |
+				     QEDR_UVERBS(CREATE_CQ) |
+				     QEDR_UVERBS(RESIZE_CQ) |
+				     QEDR_UVERBS(DESTROY_CQ) |
+				     QEDR_UVERBS(REQ_NOTIFY_CQ);
 
 	dev->ibdev.phys_port_cnt = 1;
 	dev->ibdev.num_comp_vectors = dev->num_cnq;
@@ -105,6 +112,16 @@ static int qedr_register_device(struct qedr_dev *dev)
 	dev->ibdev.dealloc_ucontext = qedr_dealloc_ucontext;
 	dev->ibdev.mmap = qedr_mmap;
 
+	dev->ibdev.alloc_pd = qedr_alloc_pd;
+	dev->ibdev.dealloc_pd = qedr_dealloc_pd;
+
+	dev->ibdev.create_cq = qedr_create_cq;
+	dev->ibdev.destroy_cq = qedr_destroy_cq;
+	dev->ibdev.resize_cq = qedr_resize_cq;
+	dev->ibdev.req_notify_cq = qedr_arm_cq;
+
+	dev->ibdev.query_pkey = qedr_query_pkey;
+
 	dev->ibdev.dma_device = &dev->pdev->dev;
 
 	dev->ibdev.get_link_layer = qedr_link_layer;
@@ -324,6 +341,8 @@ static irqreturn_t qedr_irq_handler(int irq, void *handle)
 {
 	u16 hw_comp_cons, sw_comp_cons;
 	struct qedr_cnq *cnq = handle;
+	struct regpair *cq_handle;
+	struct qedr_cq *cq;
 
 	qed_sb_ack(cnq->sb, IGU_INT_DISABLE, 0);
 
@@ -336,7 +355,34 @@ static irqreturn_t qedr_irq_handler(int irq, void *handle)
 	rmb();
 
 	while (sw_comp_cons != hw_comp_cons) {
+		cq_handle = (struct regpair *)qed_chain_consume(&cnq->pbl);
+		cq = (struct qedr_cq *)(uintptr_t)HILO_U64(cq_handle->hi,
+				cq_handle->lo);
+
+		if (cq == NULL) {
+			DP_ERR(cnq->dev,
+			       "Received NULL CQ cq_handle->hi=%d cq_handle->lo=%d sw_comp_cons=%d hw_comp_cons=%d\n",
+			       cq_handle->hi, cq_handle->lo, sw_comp_cons,
+			       hw_comp_cons);
+
+			break;
+		}
+
+		if (cq->sig != QEDR_CQ_MAGIC_NUMBER) {
+			DP_ERR(cnq->dev,
+			       "Problem with cq signature, cq_handle->hi=%d ch_handle->lo=%d cq=%p\n",
+			       cq_handle->hi, cq_handle->lo, cq);
+			break;
+		}
+
+		cq->arm_flags = 0;
+
+		if (cq->ibcq.comp_handler)
+			(*cq->ibcq.comp_handler)
+				(&cq->ibcq, cq->ibcq.cq_context);
+
 		sw_comp_cons = qed_chain_get_cons_idx(&cnq->pbl);
+
 		cnq->n_comp++;
 	}
 
diff --git a/drivers/infiniband/hw/qedr/qedr.h b/drivers/infiniband/hw/qedr/qedr.h
index 2091c0d..557b9e0 100644
--- a/drivers/infiniband/hw/qedr/qedr.h
+++ b/drivers/infiniband/hw/qedr/qedr.h
@@ -50,6 +50,10 @@
 
 #define QEDR_MSG_INIT "INIT"
 #define QEDR_MSG_MISC "MISC"
+#define QEDR_MSG_CQ   "  CQ"
+#define QEDR_MSG_MR   "  MR"
+
+#define QEDR_CQ_MAGIC_NUMBER   (0x11223344)
 
 struct qedr_dev;
 
@@ -181,6 +185,12 @@ struct qedr_dev {
 #define QEDR_ROCE_PKEY_TABLE_LEN 1
 #define QEDR_ROCE_PKEY_DEFAULT 0xffff
 
+struct qedr_pbl {
+	struct list_head list_entry;
+	void *va;
+	dma_addr_t pa;
+};
+
 struct qedr_ucontext {
 	struct ib_ucontext ibucontext;
 	struct qedr_dev *dev;
@@ -196,6 +206,64 @@ struct qedr_ucontext {
 	struct mutex mm_list_lock;
 };
 
+union db_prod64 {
+	struct rdma_pwm_val32_data data;
+	u64 raw;
+};
+
+enum qedr_cq_type {
+	QEDR_CQ_TYPE_GSI,
+	QEDR_CQ_TYPE_KERNEL,
+	QEDR_CQ_TYPE_USER
+};
+
+struct qedr_pbl_info {
+	u32 num_pbls;
+	u32 num_pbes;
+	u32 pbl_size;
+	u32 pbe_size;
+	bool two_layered;
+};
+
+struct qedr_userq {
+	struct ib_umem *umem;
+	struct qedr_pbl_info pbl_info;
+	struct qedr_pbl *pbl_tbl;
+	u64 buf_addr;
+	size_t buf_len;
+};
+
+struct qedr_cq {
+	struct ib_cq ibcq;
+
+	enum qedr_cq_type cq_type;
+	u32 sig;
+
+	u16 icid;
+
+	/* Lock to protect multiplem CQ's */
+	spinlock_t cq_lock;
+	u8 arm_flags;
+	struct qed_chain pbl;
+
+	void __iomem *db_addr;
+	union db_prod64 db;
+
+	u8 pbl_toggle;
+	union rdma_cqe *latest_cqe;
+	union rdma_cqe *toggle_cqe;
+
+	u32 cq_cons;
+
+	struct qedr_userq q;
+};
+
+struct qedr_pd {
+	struct ib_pd ibpd;
+	u32 pd_id;
+	struct qedr_ucontext *uctx;
+};
+
 struct qedr_mm {
 	struct {
 		u64 phy_addr;
@@ -215,4 +283,14 @@ static inline struct qedr_dev *get_qedr_dev(struct ib_device *ibdev)
 	return container_of(ibdev, struct qedr_dev, ibdev);
 }
 
+static inline struct qedr_pd *get_qedr_pd(struct ib_pd *ibpd)
+{
+	return container_of(ibpd, struct qedr_pd, ibpd);
+}
+
+static inline struct qedr_cq *get_qedr_cq(struct ib_cq *ibcq)
+{
+	return container_of(ibcq, struct qedr_cq, ibcq);
+}
+
 #endif
diff --git a/drivers/infiniband/hw/qedr/qedr_hsi_rdma.h b/drivers/infiniband/hw/qedr/qedr_hsi_rdma.h
index 3e508fb..84f6520 100644
--- a/drivers/infiniband/hw/qedr/qedr_hsi_rdma.h
+++ b/drivers/infiniband/hw/qedr/qedr_hsi_rdma.h
@@ -47,6 +47,19 @@ struct rdma_cqe_responder {
 	__le32 imm_data_hi;
 	__le16 rq_cons;
 	u8 flags;
+#define RDMA_CQE_RESPONDER_TOGGLE_BIT_MASK  0x1
+#define RDMA_CQE_RESPONDER_TOGGLE_BIT_SHIFT 0
+#define RDMA_CQE_RESPONDER_TYPE_MASK        0x3
+#define RDMA_CQE_RESPONDER_TYPE_SHIFT       1
+#define RDMA_CQE_RESPONDER_INV_FLG_MASK     0x1
+#define RDMA_CQE_RESPONDER_INV_FLG_SHIFT    3
+#define RDMA_CQE_RESPONDER_IMM_FLG_MASK     0x1
+#define RDMA_CQE_RESPONDER_IMM_FLG_SHIFT    4
+#define RDMA_CQE_RESPONDER_RDMA_FLG_MASK    0x1
+#define RDMA_CQE_RESPONDER_RDMA_FLG_SHIFT   5
+#define RDMA_CQE_RESPONDER_RESERVED2_MASK   0x3
+#define RDMA_CQE_RESPONDER_RESERVED2_SHIFT  6
+	u8 status;
 };
 
 struct rdma_cqe_requester {
@@ -58,6 +71,12 @@ struct rdma_cqe_requester {
 	__le32 reserved3;
 	__le16 reserved4;
 	u8 flags;
+#define RDMA_CQE_REQUESTER_TOGGLE_BIT_MASK  0x1
+#define RDMA_CQE_REQUESTER_TOGGLE_BIT_SHIFT 0
+#define RDMA_CQE_REQUESTER_TYPE_MASK        0x3
+#define RDMA_CQE_REQUESTER_TYPE_SHIFT       1
+#define RDMA_CQE_REQUESTER_RESERVED5_MASK   0x1F
+#define RDMA_CQE_REQUESTER_RESERVED5_SHIFT  3
 	u8 status;
 };
 
@@ -66,6 +85,12 @@ struct rdma_cqe_common {
 	struct regpair qp_handle;
 	__le16 reserved1[7];
 	u8 flags;
+#define RDMA_CQE_COMMON_TOGGLE_BIT_MASK  0x1
+#define RDMA_CQE_COMMON_TOGGLE_BIT_SHIFT 0
+#define RDMA_CQE_COMMON_TYPE_MASK        0x3
+#define RDMA_CQE_COMMON_TYPE_SHIFT       1
+#define RDMA_CQE_COMMON_RESERVED2_MASK   0x1F
+#define RDMA_CQE_COMMON_RESERVED2_SHIFT  3
 	u8 status;
 };
 
@@ -76,6 +101,45 @@ union rdma_cqe {
 	struct rdma_cqe_common cmn;
 };
 
+/* * CQE requester status enumeration */
+enum rdma_cqe_requester_status_enum {
+	RDMA_CQE_REQ_STS_OK,
+	RDMA_CQE_REQ_STS_BAD_RESPONSE_ERR,
+	RDMA_CQE_REQ_STS_LOCAL_LENGTH_ERR,
+	RDMA_CQE_REQ_STS_LOCAL_QP_OPERATION_ERR,
+	RDMA_CQE_REQ_STS_LOCAL_PROTECTION_ERR,
+	RDMA_CQE_REQ_STS_MEMORY_MGT_OPERATION_ERR,
+	RDMA_CQE_REQ_STS_REMOTE_INVALID_REQUEST_ERR,
+	RDMA_CQE_REQ_STS_REMOTE_ACCESS_ERR,
+	RDMA_CQE_REQ_STS_REMOTE_OPERATION_ERR,
+	RDMA_CQE_REQ_STS_RNR_NAK_RETRY_CNT_ERR,
+	RDMA_CQE_REQ_STS_TRANSPORT_RETRY_CNT_ERR,
+	RDMA_CQE_REQ_STS_WORK_REQUEST_FLUSHED_ERR,
+	MAX_RDMA_CQE_REQUESTER_STATUS_ENUM
+};
+
+/* CQE responder status enumeration */
+enum rdma_cqe_responder_status_enum {
+	RDMA_CQE_RESP_STS_OK,
+	RDMA_CQE_RESP_STS_LOCAL_ACCESS_ERR,
+	RDMA_CQE_RESP_STS_LOCAL_LENGTH_ERR,
+	RDMA_CQE_RESP_STS_LOCAL_QP_OPERATION_ERR,
+	RDMA_CQE_RESP_STS_LOCAL_PROTECTION_ERR,
+	RDMA_CQE_RESP_STS_MEMORY_MGT_OPERATION_ERR,
+	RDMA_CQE_RESP_STS_REMOTE_INVALID_REQUEST_ERR,
+	RDMA_CQE_RESP_STS_WORK_REQUEST_FLUSHED_ERR,
+	MAX_RDMA_CQE_RESPONDER_STATUS_ENUM
+};
+
+/* CQE type enumeration */
+enum rdma_cqe_type {
+	RDMA_CQE_TYPE_REQUESTER,
+	RDMA_CQE_TYPE_RESPONDER_RQ,
+	RDMA_CQE_TYPE_RESPONDER_SRQ,
+	RDMA_CQE_TYPE_INVALID,
+	MAX_RDMA_CQE_TYPE
+};
+
 struct rdma_sq_sge {
 	__le32 length;
 	struct regpair	addr;
@@ -93,4 +157,19 @@ struct rdma_srq_sge {
 	__le32 length;
 	__le32 l_key;
 };
+
+/* Rdma doorbell data for CQ */
+struct rdma_pwm_val32_data {
+	__le16 icid;
+	u8 agg_flags;
+	u8 params;
+#define RDMA_PWM_VAL32_DATA_AGG_CMD_MASK    0x3
+#define RDMA_PWM_VAL32_DATA_AGG_CMD_SHIFT   0
+#define RDMA_PWM_VAL32_DATA_BYPASS_EN_MASK  0x1
+#define RDMA_PWM_VAL32_DATA_BYPASS_EN_SHIFT 2
+#define RDMA_PWM_VAL32_DATA_RESERVED_MASK   0x1F
+#define RDMA_PWM_VAL32_DATA_RESERVED_SHIFT  3
+	__le32 value;
+};
+
 #endif /* __QED_HSI_RDMA__ */
diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c
index ab5f11a..bff4ece 100644
--- a/drivers/infiniband/hw/qedr/verbs.c
+++ b/drivers/infiniband/hw/qedr/verbs.c
@@ -49,6 +49,17 @@
 #include "verbs.h"
 #include <rdma/qedr-abi.h>
 
+#define DB_ADDR_SHIFT(addr)		((addr) << DB_PWM_ADDR_OFFSET_SHIFT)
+
+int qedr_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
+{
+	if (index > QEDR_ROCE_PKEY_TABLE_LEN)
+		return -EINVAL;
+
+	*pkey = QEDR_ROCE_PKEY_DEFAULT;
+	return 0;
+}
+
 int qedr_query_gid(struct ib_device *ibdev, u8 port, int index,
 		   union ib_gid *sgid)
 {
@@ -453,3 +464,535 @@ int qedr_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
 	DP_DEBUG(dev, QEDR_MSG_INIT, "qedr_mmap return code: %d\n", rc);
 	return rc;
 }
+
+struct ib_pd *qedr_alloc_pd(struct ib_device *ibdev,
+			    struct ib_ucontext *context, struct ib_udata *udata)
+{
+	struct qedr_dev *dev = get_qedr_dev(ibdev);
+	struct qedr_ucontext *uctx = NULL;
+	struct qedr_alloc_pd_uresp uresp;
+	struct qedr_pd *pd;
+	u16 pd_id;
+	int rc;
+
+	DP_DEBUG(dev, QEDR_MSG_INIT, "Function called from: %s\n",
+		 (udata && context) ? "User Lib" : "Kernel");
+	if (udata && context)
+		uctx = get_qedr_ucontext(context);
+
+	pd = kzalloc(sizeof(*pd), GFP_KERNEL);
+	if (!pd) {
+		DP_ERR(dev, "failed to alloce PD\n");
+		return ERR_PTR(-ENOMEM);
+	}
+
+	if (!dev->rdma_ctx) {
+		DP_ERR(dev, "invlaid RDMA context\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	dev->ops->rdma_alloc_pd(dev->rdma_ctx, &pd_id);
+
+	uresp.pd_id = pd_id;
+	pd->pd_id = pd_id;
+
+	if (uctx) {
+		rc = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
+		if (rc)
+			DP_ERR(dev, "copy error pd_id=0x%x.\n", pd_id);
+		uctx->pd = pd;
+		pd->uctx = uctx;
+	}
+
+	return &pd->ibpd;
+}
+
+int qedr_dealloc_pd(struct ib_pd *ibpd)
+{
+	struct qedr_dev *dev = get_qedr_dev(ibpd->device);
+	struct qedr_pd *pd = get_qedr_pd(ibpd);
+
+	if (!pd)
+		pr_err("Invalid PD received in dealloc_pd\n");
+
+	DP_DEBUG(dev, QEDR_MSG_INIT, "Deallocating PD %d\n", pd->pd_id);
+	dev->ops->rdma_dealloc_pd(dev->rdma_ctx, pd->pd_id);
+
+	kfree(pd);
+
+	return 0;
+}
+
+static void qedr_free_pbl(struct qedr_dev *dev,
+			  struct qedr_pbl_info *pbl_info, struct qedr_pbl *pbl)
+{
+	struct pci_dev *pdev = dev->pdev;
+	int i;
+
+	for (i = 0; i < pbl_info->num_pbls; i++) {
+		if (!pbl[i].va)
+			continue;
+		dma_free_coherent(&pdev->dev, pbl_info->pbl_size,
+				  pbl[i].va, pbl[i].pa);
+	}
+
+	kfree(pbl);
+}
+
+#define MIN_FW_PBL_PAGE_SIZE (4 * 1024)
+#define MAX_FW_PBL_PAGE_SIZE (64 * 1024)
+
+#define NUM_PBES_ON_PAGE(_page_size) (_page_size / sizeof(u64))
+#define MAX_PBES_ON_PAGE NUM_PBES_ON_PAGE(MAX_FW_PBL_PAGE_SIZE)
+#define MAX_PBES_TWO_LAYER (MAX_PBES_ON_PAGE * MAX_PBES_ON_PAGE)
+
+static struct qedr_pbl *qedr_alloc_pbl_tbl(struct qedr_dev *dev,
+					   struct qedr_pbl_info *pbl_info,
+					   gfp_t flags)
+{
+	struct pci_dev *pdev = dev->pdev;
+	struct qedr_pbl *pbl_table;
+	dma_addr_t *pbl_main_tbl;
+	dma_addr_t pa;
+	int rc = 0;
+	void *va;
+	int i;
+
+	pbl_table = kcalloc(pbl_info->num_pbls, sizeof(*pbl_table), flags);
+
+	if (!pbl_table) {
+		DP_ERR(dev, "pbl table is NULL\n");
+		return NULL;
+	}
+
+	for (i = 0; i < pbl_info->num_pbls; i++) {
+		va = dma_alloc_coherent(&pdev->dev, pbl_info->pbl_size,
+					&pa, flags);
+		if (!va) {
+			DP_ERR(dev, "Failed to allocate pbl#%d\n", i);
+			rc = -ENOMEM;
+			goto err;
+		}
+		memset(va, 0, pbl_info->pbl_size);
+		pbl_table[i].va = va;
+		pbl_table[i].pa = pa;
+	}
+
+	/* Two-Layer PBLs, if we have more than one pbl we need to initialize
+	 * the first one with physical pointers to all of the rest
+	 */
+	pbl_main_tbl = (dma_addr_t *)pbl_table[0].va;
+	for (i = 0; i < pbl_info->num_pbls - 1; i++)
+		pbl_main_tbl[i] = pbl_table[i + 1].pa;
+
+	return pbl_table;
+
+err:
+	qedr_free_pbl(dev, pbl_info, pbl_table);
+	return NULL;
+}
+
+static int qedr_prepare_pbl_tbl(struct qedr_dev *dev,
+				struct qedr_pbl_info *pbl_info,
+				u32 num_pbes, int two_layer_capable)
+{
+	u32 pbl_capacity;
+	u32 pbl_size;
+	u32 num_pbls;
+
+	if ((num_pbes > MAX_PBES_ON_PAGE) && two_layer_capable) {
+		if (num_pbes > MAX_PBES_TWO_LAYER) {
+			DP_ERR(dev, "prepare pbl table: too many pages %d\n",
+			       num_pbes);
+			return -EINVAL;
+		}
+
+		/* calculate required pbl page size */
+		pbl_size = MIN_FW_PBL_PAGE_SIZE;
+		pbl_capacity = NUM_PBES_ON_PAGE(pbl_size) *
+			       NUM_PBES_ON_PAGE(pbl_size);
+
+		while (pbl_capacity < num_pbes) {
+			pbl_size *= 2;
+			pbl_capacity = pbl_size / sizeof(u64);
+			pbl_capacity = pbl_capacity * pbl_capacity;
+		}
+
+		num_pbls = DIV_ROUND_UP(num_pbes, NUM_PBES_ON_PAGE(pbl_size));
+		num_pbls++;	/* One for the layer0 ( points to the pbls) */
+		pbl_info->two_layered = true;
+	} else {
+		/* One layered PBL */
+		num_pbls = 1;
+		pbl_size = max_t(u32, MIN_FW_PBL_PAGE_SIZE,
+				 roundup_pow_of_two((num_pbes * sizeof(u64))));
+		pbl_info->two_layered = false;
+	}
+
+	pbl_info->num_pbls = num_pbls;
+	pbl_info->pbl_size = pbl_size;
+	pbl_info->num_pbes = num_pbes;
+
+	DP_DEBUG(dev, QEDR_MSG_MR,
+		 "prepare pbl table: num_pbes=%d, num_pbls=%d, pbl_size=%d\n",
+		 pbl_info->num_pbes, pbl_info->num_pbls, pbl_info->pbl_size);
+
+	return 0;
+}
+
+static void qedr_populate_pbls(struct qedr_dev *dev, struct ib_umem *umem,
+			       struct qedr_pbl *pbl,
+			       struct qedr_pbl_info *pbl_info)
+{
+	int shift, pg_cnt, pages, pbe_cnt, total_num_pbes = 0;
+	struct qedr_pbl *pbl_tbl;
+	struct scatterlist *sg;
+	struct regpair *pbe;
+	int entry;
+	u32 addr;
+
+	if (!pbl_info->num_pbes)
+		return;
+
+	/* If we have a two layered pbl, the first pbl points to the rest
+	 * of the pbls and the first entry lays on the second pbl in the table
+	 */
+	if (pbl_info->two_layered)
+		pbl_tbl = &pbl[1];
+	else
+		pbl_tbl = pbl;
+
+	pbe = (struct regpair *)pbl_tbl->va;
+	if (!pbe) {
+		DP_ERR(dev, "pbe is NULL\n");
+		return;
+	}
+
+	pbe_cnt = 0;
+
+	shift = ilog2(umem->page_size);
+
+	for_each_sg(umem->sg_head.sgl, sg, umem->nmap, entry) {
+		pages = sg_dma_len(sg) >> shift;
+		for (pg_cnt = 0; pg_cnt < pages; pg_cnt++) {
+			/* store the page address in pbe */
+			pbe->lo = cpu_to_le32(sg_dma_address(sg) +
+					      umem->page_size * pg_cnt);
+			addr = upper_32_bits(sg_dma_address(sg) +
+					     umem->page_size * pg_cnt);
+			pbe->hi = cpu_to_le32(addr);
+			pbe_cnt++;
+			total_num_pbes++;
+			pbe++;
+
+			if (total_num_pbes == pbl_info->num_pbes)
+				return;
+
+			/* If the given pbl is full storing the pbes,
+			 * move to next pbl.
+			 */
+			if (pbe_cnt == (pbl_info->pbl_size / sizeof(u64))) {
+				pbl_tbl++;
+				pbe = (struct regpair *)pbl_tbl->va;
+				pbe_cnt = 0;
+			}
+		}
+	}
+}
+
+static int qedr_copy_cq_uresp(struct qedr_dev *dev,
+			      struct qedr_cq *cq, struct ib_udata *udata)
+{
+	struct qedr_create_cq_uresp uresp;
+	int rc;
+
+	memset(&uresp, 0, sizeof(uresp));
+
+	uresp.db_offset = DB_ADDR_SHIFT(DQ_PWM_OFFSET_UCM_RDMA_CQ_CONS_32BIT);
+	uresp.icid = cq->icid;
+
+	rc = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
+	if (rc)
+		DP_ERR(dev, "copy error cqid=0x%x.\n", cq->icid);
+
+	return rc;
+}
+
+static void consume_cqe(struct qedr_cq *cq)
+{
+	if (cq->latest_cqe == cq->toggle_cqe)
+		cq->pbl_toggle ^= RDMA_CQE_REQUESTER_TOGGLE_BIT_MASK;
+
+	cq->latest_cqe = qed_chain_consume(&cq->pbl);
+}
+
+static inline int qedr_align_cq_entries(int entries)
+{
+	u64 size, aligned_size;
+
+	/* We allocate an extra entry that we don't report to the FW. */
+	size = (entries + 1) * QEDR_CQE_SIZE;
+	aligned_size = ALIGN(size, PAGE_SIZE);
+
+	return aligned_size / QEDR_CQE_SIZE;
+}
+
+static inline int qedr_init_user_queue(struct ib_ucontext *ib_ctx,
+				       struct qedr_dev *dev,
+				       struct qedr_userq *q,
+				       u64 buf_addr, size_t buf_len,
+				       int access, int dmasync)
+{
+	int page_cnt;
+	int rc;
+
+	q->buf_addr = buf_addr;
+	q->buf_len = buf_len;
+	q->umem = ib_umem_get(ib_ctx, q->buf_addr, q->buf_len, access, dmasync);
+	if (IS_ERR(q->umem)) {
+		DP_ERR(dev, "create user queue: failed ib_umem_get, got %ld\n",
+		       PTR_ERR(q->umem));
+		return PTR_ERR(q->umem);
+	}
+
+	page_cnt = ib_umem_page_count(q->umem);
+	rc = qedr_prepare_pbl_tbl(dev, &q->pbl_info, page_cnt, 0);
+	if (rc)
+		goto err0;
+
+	q->pbl_tbl = qedr_alloc_pbl_tbl(dev, &q->pbl_info, GFP_KERNEL);
+	if (!q->pbl_tbl)
+		goto err0;
+
+	qedr_populate_pbls(dev, q->umem, q->pbl_tbl, &q->pbl_info);
+
+	return 0;
+
+err0:
+	ib_umem_release(q->umem);
+
+	return rc;
+}
+
+static inline void qedr_init_cq_params(struct qedr_cq *cq,
+				       struct qedr_ucontext *ctx,
+				       struct qedr_dev *dev, int vector,
+				       int chain_entries, int page_cnt,
+				       u64 pbl_ptr,
+				       struct qed_rdma_create_cq_in_params
+				       *params)
+{
+	memset(params, 0, sizeof(*params));
+	params->cq_handle_hi = upper_32_bits((uintptr_t)cq);
+	params->cq_handle_lo = lower_32_bits((uintptr_t)cq);
+	params->cnq_id = vector;
+	params->cq_size = chain_entries - 1;
+	params->dpi = (ctx) ? ctx->dpi : dev->dpi;
+	params->pbl_num_pages = page_cnt;
+	params->pbl_ptr = pbl_ptr;
+	params->pbl_two_level = 0;
+}
+
+static void doorbell_cq(struct qedr_cq *cq, u32 cons, u8 flags)
+{
+	/* Flush data before signalling doorbell */
+	wmb();
+	cq->db.data.agg_flags = flags;
+	cq->db.data.value = cpu_to_le32(cons);
+	writeq(cq->db.raw, cq->db_addr);
+
+	/* Make sure write would stick */
+	mmiowb();
+}
+
+int qedr_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
+{
+	struct qedr_cq *cq = get_qedr_cq(ibcq);
+	unsigned long sflags;
+
+	if (cq->cq_type == QEDR_CQ_TYPE_GSI)
+		return 0;
+
+	spin_lock_irqsave(&cq->cq_lock, sflags);
+
+	cq->arm_flags = 0;
+
+	if (flags & IB_CQ_SOLICITED)
+		cq->arm_flags |= DQ_UCM_ROCE_CQ_ARM_SE_CF_CMD;
+
+	if (flags & IB_CQ_NEXT_COMP)
+		cq->arm_flags |= DQ_UCM_ROCE_CQ_ARM_CF_CMD;
+
+	doorbell_cq(cq, cq->cq_cons - 1, cq->arm_flags);
+
+	spin_unlock_irqrestore(&cq->cq_lock, sflags);
+
+	return 0;
+}
+
+struct ib_cq *qedr_create_cq(struct ib_device *ibdev,
+			     const struct ib_cq_init_attr *attr,
+			     struct ib_ucontext *ib_ctx, struct ib_udata *udata)
+{
+	struct qedr_ucontext *ctx = get_qedr_ucontext(ib_ctx);
+	struct qed_rdma_destroy_cq_out_params destroy_oparams;
+	struct qed_rdma_destroy_cq_in_params destroy_iparams;
+	struct qedr_dev *dev = get_qedr_dev(ibdev);
+	struct qed_rdma_create_cq_in_params params;
+	struct qedr_create_cq_ureq ureq;
+	int vector = attr->comp_vector;
+	int entries = attr->cqe;
+	struct qedr_cq *cq;
+	int chain_entries;
+	int page_cnt;
+	u64 pbl_ptr;
+	u16 icid;
+	int rc;
+
+	DP_DEBUG(dev, QEDR_MSG_INIT,
+		 "create_cq: called from %s. entries=%d, vector=%d\n",
+		 udata ? "User Lib" : "Kernel", entries, vector);
+
+	if (entries > QEDR_MAX_CQES) {
+		DP_ERR(dev,
+		       "create cq: the number of entries %d is too high. Must be equal or below %d.\n",
+		       entries, QEDR_MAX_CQES);
+		return ERR_PTR(-EINVAL);
+	}
+
+	chain_entries = qedr_align_cq_entries(entries);
+	chain_entries = min_t(int, chain_entries, QEDR_MAX_CQES);
+
+	cq = kzalloc(sizeof(*cq), GFP_KERNEL);
+	if (!cq)
+		return ERR_PTR(-ENOMEM);
+
+	if (udata) {
+		memset(&ureq, 0, sizeof(ureq));
+		if (ib_copy_from_udata(&ureq, udata, sizeof(ureq))) {
+			DP_ERR(dev,
+			       "create cq: problem copying data from user space\n");
+			goto err0;
+		}
+
+		if (!ureq.len) {
+			DP_ERR(dev,
+			       "create cq: cannot create a cq with 0 entries\n");
+			goto err0;
+		}
+
+		cq->cq_type = QEDR_CQ_TYPE_USER;
+
+		rc = qedr_init_user_queue(ib_ctx, dev, &cq->q, ureq.addr,
+					  ureq.len, IB_ACCESS_LOCAL_WRITE, 1);
+		if (rc)
+			goto err0;
+
+		pbl_ptr = cq->q.pbl_tbl->pa;
+		page_cnt = cq->q.pbl_info.num_pbes;
+	} else {
+		cq->cq_type = QEDR_CQ_TYPE_KERNEL;
+
+		rc = dev->ops->common->chain_alloc(dev->cdev,
+						   QED_CHAIN_USE_TO_CONSUME,
+						   QED_CHAIN_MODE_PBL,
+						   QED_CHAIN_CNT_TYPE_U32,
+						   chain_entries,
+						   sizeof(union rdma_cqe),
+						   &cq->pbl);
+		if (rc)
+			goto err1;
+
+		page_cnt = qed_chain_get_page_cnt(&cq->pbl);
+		pbl_ptr = qed_chain_get_pbl_phys(&cq->pbl);
+	}
+
+	qedr_init_cq_params(cq, ctx, dev, vector, chain_entries, page_cnt,
+			    pbl_ptr, &params);
+
+	rc = dev->ops->rdma_create_cq(dev->rdma_ctx, &params, &icid);
+	if (rc)
+		goto err2;
+
+	cq->icid = icid;
+	cq->sig = QEDR_CQ_MAGIC_NUMBER;
+	spin_lock_init(&cq->cq_lock);
+
+	if (ib_ctx) {
+		rc = qedr_copy_cq_uresp(dev, cq, udata);
+		if (rc)
+			goto err3;
+	} else {
+		/* Generate doorbell address. */
+		cq->db_addr = dev->db_addr +
+		    DB_ADDR_SHIFT(DQ_PWM_OFFSET_UCM_RDMA_CQ_CONS_32BIT);
+		cq->db.data.icid = cq->icid;
+		cq->db.data.params = DB_AGG_CMD_SET <<
+		    RDMA_PWM_VAL32_DATA_AGG_CMD_SHIFT;
+
+		/* point to the very last element, passing it we will toggle */
+		cq->toggle_cqe = qed_chain_get_last_elem(&cq->pbl);
+		cq->pbl_toggle = RDMA_CQE_REQUESTER_TOGGLE_BIT_MASK;
+		cq->latest_cqe = NULL;
+		consume_cqe(cq);
+		cq->cq_cons = qed_chain_get_cons_idx_u32(&cq->pbl);
+	}
+
+	DP_DEBUG(dev, QEDR_MSG_CQ,
+		 "create cq: icid=0x%0x, addr=%p, size(entries)=0x%0x\n",
+		 cq->icid, cq, params.cq_size);
+
+	return &cq->ibcq;
+
+err3:
+	destroy_iparams.icid = cq->icid;
+	dev->ops->rdma_destroy_cq(dev->rdma_ctx, &destroy_iparams,
+				  &destroy_oparams);
+err2:
+	if (udata)
+		qedr_free_pbl(dev, &cq->q.pbl_info, cq->q.pbl_tbl);
+	else
+		dev->ops->common->chain_free(dev->cdev, &cq->pbl);
+err1:
+	if (udata)
+		ib_umem_release(cq->q.umem);
+err0:
+	kfree(cq);
+	return ERR_PTR(-EINVAL);
+}
+
+int qedr_resize_cq(struct ib_cq *ibcq, int new_cnt, struct ib_udata *udata)
+{
+	struct qedr_dev *dev = get_qedr_dev(ibcq->device);
+	struct qedr_cq *cq = get_qedr_cq(ibcq);
+
+	DP_ERR(dev, "cq %p RESIZE NOT SUPPORTED\n", cq);
+
+	return 0;
+}
+
+int qedr_destroy_cq(struct ib_cq *ibcq)
+{
+	struct qedr_dev *dev = get_qedr_dev(ibcq->device);
+	struct qed_rdma_destroy_cq_out_params oparams;
+	struct qed_rdma_destroy_cq_in_params iparams;
+	struct qedr_cq *cq = get_qedr_cq(ibcq);
+
+	DP_DEBUG(dev, QEDR_MSG_CQ, "destroy cq: cq_id %d", cq->icid);
+
+	/* GSIs CQs are handled by driver, so they don't exist in the FW */
+	if (cq->cq_type != QEDR_CQ_TYPE_GSI) {
+		iparams.icid = cq->icid;
+		dev->ops->rdma_destroy_cq(dev->rdma_ctx, &iparams, &oparams);
+		dev->ops->common->chain_free(dev->cdev, &cq->pbl);
+	}
+
+	if (ibcq->uobject && ibcq->uobject->context) {
+		qedr_free_pbl(dev, &cq->q.pbl_info, cq->q.pbl_tbl);
+		ib_umem_release(cq->q.umem);
+	}
+
+	kfree(cq);
+
+	return 0;
+}
diff --git a/drivers/infiniband/hw/qedr/verbs.h b/drivers/infiniband/hw/qedr/verbs.h
index 9472044..36c8a69 100644
--- a/drivers/infiniband/hw/qedr/verbs.h
+++ b/drivers/infiniband/hw/qedr/verbs.h
@@ -40,6 +40,8 @@ int qedr_modify_port(struct ib_device *, u8 port, int mask,
 
 int qedr_query_gid(struct ib_device *, u8 port, int index, union ib_gid *gid);
 
+int qedr_query_pkey(struct ib_device *, u8 port, u16 index, u16 *pkey);
+
 struct ib_ucontext *qedr_alloc_ucontext(struct ib_device *, struct ib_udata *);
 int qedr_dealloc_ucontext(struct ib_ucontext *);
 
@@ -49,4 +51,16 @@ int qedr_del_gid(struct ib_device *device, u8 port_num,
 int qedr_add_gid(struct ib_device *device, u8 port_num,
 		 unsigned int index, const union ib_gid *gid,
 		 const struct ib_gid_attr *attr, void **context);
+struct ib_pd *qedr_alloc_pd(struct ib_device *,
+			    struct ib_ucontext *, struct ib_udata *);
+int qedr_dealloc_pd(struct ib_pd *pd);
+
+struct ib_cq *qedr_create_cq(struct ib_device *ibdev,
+			     const struct ib_cq_init_attr *attr,
+			     struct ib_ucontext *ib_ctx,
+			     struct ib_udata *udata);
+int qedr_resize_cq(struct ib_cq *, int cqe, struct ib_udata *);
+int qedr_destroy_cq(struct ib_cq *);
+int qedr_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags);
+
 #endif
diff --git a/include/uapi/rdma/qedr-abi.h b/include/uapi/rdma/qedr-abi.h
index f7c7fff..b0fc5f2 100644
--- a/include/uapi/rdma/qedr-abi.h
+++ b/include/uapi/rdma/qedr-abi.h
@@ -50,4 +50,23 @@ struct qedr_alloc_ucontext_resp {
 	__u32 sges_per_srq_wr;
 	__u32 max_cqes;
 };
+
+struct qedr_alloc_pd_ureq {
+	__u64 rsvd1;
+};
+
+struct qedr_alloc_pd_uresp {
+	__u32 pd_id;
+};
+
+struct qedr_create_cq_ureq {
+	__u64 addr;
+	__u64 len;
+};
+
+struct qedr_create_cq_uresp {
+	__u32 db_offset;
+	__u16 icid;
+};
+
 #endif /* __QEDR_USER_H__ */
-- 
1.8.3.1

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[PATCH qedr 05/10] qedr: Add support for QP verbs

[Ram Amrani]

Add support for Queue Pair verbs which adds, deletes,
modifies and queries Queue Pairs.

Signed-off-by: Rajesh Borundia <rajesh.borundia-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
Signed-off-by: Ram Amrani <Ram.Amrani-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
---
 drivers/infiniband/hw/qedr/main.c          |   14 +-
 drivers/infiniband/hw/qedr/qedr.h          |  125 ++++
 drivers/infiniband/hw/qedr/qedr_cm.h       |   40 +
 drivers/infiniband/hw/qedr/qedr_hsi_rdma.h |   11 +
 drivers/infiniband/hw/qedr/verbs.c         | 1095 ++++++++++++++++++++++++++++
 drivers/infiniband/hw/qedr/verbs.h         |    7 +
 include/uapi/rdma/qedr-abi.h               |   34 +
 7 files changed, 1325 insertions(+), 1 deletion(-)
 create mode 100644 drivers/infiniband/hw/qedr/qedr_cm.h

diff --git a/drivers/infiniband/hw/qedr/main.c b/drivers/infiniband/hw/qedr/main.c
index dc7f072..40864b4 100644
--- a/drivers/infiniband/hw/qedr/main.c
+++ b/drivers/infiniband/hw/qedr/main.c
@@ -48,6 +48,8 @@ MODULE_AUTHOR("QLogic Corporation");
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_VERSION(QEDR_MODULE_VERSION);
 
+#define QEDR_WQ_MULTIPLIER_DFT	(3)
+
 void qedr_ib_dispatch_event(struct qedr_dev *dev, u8 port_num,
 			    enum ib_event_type type)
 {
@@ -94,7 +96,11 @@ static int qedr_register_device(struct qedr_dev *dev)
 				     QEDR_UVERBS(CREATE_CQ) |
 				     QEDR_UVERBS(RESIZE_CQ) |
 				     QEDR_UVERBS(DESTROY_CQ) |
-				     QEDR_UVERBS(REQ_NOTIFY_CQ);
+				     QEDR_UVERBS(REQ_NOTIFY_CQ) |
+				     QEDR_UVERBS(CREATE_QP) |
+				     QEDR_UVERBS(MODIFY_QP) |
+				     QEDR_UVERBS(QUERY_QP) |
+				     QEDR_UVERBS(DESTROY_QP);
 
 	dev->ibdev.phys_port_cnt = 1;
 	dev->ibdev.num_comp_vectors = dev->num_cnq;
@@ -120,6 +126,11 @@ static int qedr_register_device(struct qedr_dev *dev)
 	dev->ibdev.resize_cq = qedr_resize_cq;
 	dev->ibdev.req_notify_cq = qedr_arm_cq;
 
+	dev->ibdev.create_qp = qedr_create_qp;
+	dev->ibdev.modify_qp = qedr_modify_qp;
+	dev->ibdev.query_qp = qedr_query_qp;
+	dev->ibdev.destroy_qp = qedr_destroy_qp;
+
 	dev->ibdev.query_pkey = qedr_query_pkey;
 
 	dev->ibdev.dma_device = &dev->pdev->dev;
@@ -628,6 +639,7 @@ static struct qedr_dev *qedr_add(struct qed_dev *cdev, struct pci_dev *pdev,
 		goto init_err;
 	}
 
+	dev->wq_multiplier = QEDR_WQ_MULTIPLIER_DFT;
 
 	qedr_pci_set_atomic(dev, pdev);
 
diff --git a/drivers/infiniband/hw/qedr/qedr.h b/drivers/infiniband/hw/qedr/qedr.h
index 557b9e0..2f97477 100644
--- a/drivers/infiniband/hw/qedr/qedr.h
+++ b/drivers/infiniband/hw/qedr/qedr.h
@@ -52,6 +52,9 @@
 #define QEDR_MSG_MISC "MISC"
 #define QEDR_MSG_CQ   "  CQ"
 #define QEDR_MSG_MR   "  MR"
+#define QEDR_MSG_RQ   "  RQ"
+#define QEDR_MSG_SQ   "  SQ"
+#define QEDR_MSG_QP   "  QP"
 
 #define QEDR_CQ_MAGIC_NUMBER   (0x11223344)
 
@@ -143,6 +146,8 @@ struct qedr_dev {
 	u32			dp_module;
 	u8			dp_level;
 	u8			num_hwfns;
+	uint			wq_multiplier;
+
 };
 
 #define QEDR_MAX_SQ_PBL			(0x8000)
@@ -272,6 +277,122 @@ struct qedr_mm {
 	struct list_head entry;
 };
 
+union db_prod32 {
+	struct rdma_pwm_val16_data data;
+	u32 raw;
+};
+
+struct qedr_qp_hwq_info {
+	/* WQE Elements */
+	struct qed_chain pbl;
+	u64 p_phys_addr_tbl;
+	u32 max_sges;
+
+	/* WQE */
+	u16 prod;
+	u16 cons;
+	u16 wqe_cons;
+	u16 max_wr;
+
+	/* DB */
+	void __iomem *db;
+	union db_prod32 db_data;
+};
+
+#define QEDR_INC_SW_IDX(p_info, index)					\
+	do {								\
+		p_info->index = (p_info->index + 1) &			\
+				qed_chain_get_capacity(p_info->pbl)	\
+	} while (0)
+
+enum qedr_qp_err_bitmap {
+	QEDR_QP_ERR_SQ_FULL = 1,
+	QEDR_QP_ERR_RQ_FULL = 2,
+	QEDR_QP_ERR_BAD_SR = 4,
+	QEDR_QP_ERR_BAD_RR = 8,
+	QEDR_QP_ERR_SQ_PBL_FULL = 16,
+	QEDR_QP_ERR_RQ_PBL_FULL = 32,
+};
+
+struct qedr_qp {
+	struct ib_qp ibqp;	/* must be first */
+	struct qedr_dev *dev;
+
+	struct qedr_qp_hwq_info sq;
+	struct qedr_qp_hwq_info rq;
+
+	u32 max_inline_data;
+
+	/* Lock for QP's */
+	spinlock_t q_lock;
+	struct qedr_cq *sq_cq;
+	struct qedr_cq *rq_cq;
+	struct qedr_srq *srq;
+	enum qed_roce_qp_state state;
+	u32 id;
+	struct qedr_pd *pd;
+	enum ib_qp_type qp_type;
+	struct qed_rdma_qp *qed_qp;
+	u32 qp_id;
+	u16 icid;
+	u16 mtu;
+	int sgid_idx;
+	u32 rq_psn;
+	u32 sq_psn;
+	u32 qkey;
+	u32 dest_qp_num;
+
+	/* Relevant to qps created from kernel space only (ULPs) */
+	u8 prev_wqe_size;
+	u16 wqe_cons;
+	u32 err_bitmap;
+	bool signaled;
+
+	/* SQ shadow */
+	struct {
+		u64 wr_id;
+		enum ib_wc_opcode opcode;
+		u32 bytes_len;
+		u8 wqe_size;
+		bool signaled;
+		dma_addr_t icrc_mapping;
+		u32 *icrc;
+		struct qedr_mr *mr;
+	} *wqe_wr_id;
+
+	/* RQ shadow */
+	struct {
+		u64 wr_id;
+		struct ib_sge sg_list[RDMA_MAX_SGE_PER_RQ_WQE];
+		u8 wqe_size;
+
+		u16 vlan_id;
+		int rc;
+	} *rqe_wr_id;
+
+	/* Relevant to qps created from user space only (applications) */
+	struct qedr_userq usq;
+	struct qedr_userq urq;
+};
+
+static inline int qedr_get_dmac(struct qedr_dev *dev,
+				struct ib_ah_attr *ah_attr, u8 *mac_addr)
+{
+	union ib_gid zero_sgid = { { 0 } };
+	struct in6_addr in6;
+
+	if (!memcmp(&ah_attr->grh.dgid, &zero_sgid, sizeof(union ib_gid))) {
+		DP_ERR(dev, "Local port GID not supported\n");
+		eth_zero_addr(mac_addr);
+		return -EINVAL;
+	}
+
+	memcpy(&in6, ah_attr->grh.dgid.raw, sizeof(in6));
+	ether_addr_copy(mac_addr, ah_attr->dmac);
+
+	return 0;
+}
+
 static inline
 struct qedr_ucontext *get_qedr_ucontext(struct ib_ucontext *ibucontext)
 {
@@ -293,4 +414,8 @@ static inline struct qedr_cq *get_qedr_cq(struct ib_cq *ibcq)
 	return container_of(ibcq, struct qedr_cq, ibcq);
 }
 
+static inline struct qedr_qp *get_qedr_qp(struct ib_qp *ibqp)
+{
+	return container_of(ibqp, struct qedr_qp, ibqp);
+}
 #endif
diff --git a/drivers/infiniband/hw/qedr/qedr_cm.h b/drivers/infiniband/hw/qedr/qedr_cm.h
new file mode 100644
index 0000000..b8a8b76
--- /dev/null
+++ b/drivers/infiniband/hw/qedr/qedr_cm.h
@@ -0,0 +1,40 @@
+/* QLogic qedr NIC Driver
+ * Copyright (c) 2015-2016  QLogic Corporation
+ *
+ * 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 LINUX_QEDR_CM_H_
+#define LINUX_QEDR_CM_H_
+
+static inline u32 qedr_get_ipv4_from_gid(u8 *gid)
+{
+	return *(u32 *)(void *)&gid[12];
+}
+
+#endif
diff --git a/drivers/infiniband/hw/qedr/qedr_hsi_rdma.h b/drivers/infiniband/hw/qedr/qedr_hsi_rdma.h
index 84f6520..4770559 100644
--- a/drivers/infiniband/hw/qedr/qedr_hsi_rdma.h
+++ b/drivers/infiniband/hw/qedr/qedr_hsi_rdma.h
@@ -158,6 +158,17 @@ struct rdma_srq_sge {
 	__le32 l_key;
 };
 
+/* Rdma doorbell data for SQ and RQ */
+struct rdma_pwm_val16_data {
+	__le16 icid;
+	__le16 value;
+};
+
+union rdma_pwm_val16_data_union {
+	struct rdma_pwm_val16_data as_struct;
+	__le32 as_dword;
+};
+
 /* Rdma doorbell data for CQ */
 struct rdma_pwm_val32_data {
 	__le16 icid;
diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c
index bff4ece..87f72ec 100644
--- a/drivers/infiniband/hw/qedr/verbs.c
+++ b/drivers/infiniband/hw/qedr/verbs.c
@@ -48,6 +48,7 @@
 #include "qedr.h"
 #include "verbs.h"
 #include <rdma/qedr-abi.h>
+#include "qedr_cm.h"
 
 #define DB_ADDR_SHIFT(addr)		((addr) << DB_PWM_ADDR_OFFSET_SHIFT)
 
@@ -996,3 +997,1097 @@ int qedr_destroy_cq(struct ib_cq *ibcq)
 
 	return 0;
 }
+
+static inline int get_gid_info_from_table(struct ib_qp *ibqp,
+					  struct ib_qp_attr *attr,
+					  int attr_mask,
+					  struct qed_rdma_modify_qp_in_params
+					  *qp_params)
+{
+	enum rdma_network_type nw_type;
+	struct ib_gid_attr gid_attr;
+	union ib_gid gid;
+	u32 ipv4_addr;
+	int rc = 0;
+	int i;
+
+	rc = ib_get_cached_gid(ibqp->device, attr->ah_attr.port_num,
+			       attr->ah_attr.grh.sgid_index, &gid, &gid_attr);
+	if (rc)
+		return rc;
+
+	if (!memcmp(&gid, &zgid, sizeof(gid)))
+		return -ENOENT;
+
+	if (gid_attr.ndev) {
+		qp_params->vlan_id = rdma_vlan_dev_vlan_id(gid_attr.ndev);
+
+		dev_put(gid_attr.ndev);
+		nw_type = ib_gid_to_network_type(gid_attr.gid_type, &gid);
+		switch (nw_type) {
+		case RDMA_NETWORK_IPV6:
+			memcpy(&qp_params->sgid.bytes[0], &gid.raw[0],
+			       sizeof(qp_params->sgid));
+			memcpy(&qp_params->dgid.bytes[0],
+			       &attr->ah_attr.grh.dgid,
+			       sizeof(qp_params->dgid));
+			qp_params->roce_mode = ROCE_V2_IPV6;
+			SET_FIELD(qp_params->modify_flags,
+				  QED_ROCE_MODIFY_QP_VALID_ROCE_MODE, 1);
+			break;
+		case RDMA_NETWORK_IB:
+			memcpy(&qp_params->sgid.bytes[0], &gid.raw[0],
+			       sizeof(qp_params->sgid));
+			memcpy(&qp_params->dgid.bytes[0],
+			       &attr->ah_attr.grh.dgid,
+			       sizeof(qp_params->dgid));
+			qp_params->roce_mode = ROCE_V1;
+			break;
+		case RDMA_NETWORK_IPV4:
+			memset(&qp_params->sgid, 0, sizeof(qp_params->sgid));
+			memset(&qp_params->dgid, 0, sizeof(qp_params->dgid));
+			ipv4_addr = qedr_get_ipv4_from_gid(gid.raw);
+			qp_params->sgid.ipv4_addr = ipv4_addr;
+			ipv4_addr =
+			    qedr_get_ipv4_from_gid(attr->ah_attr.grh.dgid.raw);
+			qp_params->dgid.ipv4_addr = ipv4_addr;
+			SET_FIELD(qp_params->modify_flags,
+				  QED_ROCE_MODIFY_QP_VALID_ROCE_MODE, 1);
+			qp_params->roce_mode = ROCE_V2_IPV4;
+			break;
+		}
+	}
+
+	for (i = 0; i < 4; i++) {
+		qp_params->sgid.dwords[i] = ntohl(qp_params->sgid.dwords[i]);
+		qp_params->dgid.dwords[i] = ntohl(qp_params->dgid.dwords[i]);
+	}
+
+	if (qp_params->vlan_id >= VLAN_CFI_MASK)
+		qp_params->vlan_id = 0;
+
+	return 0;
+}
+
+static void qedr_cleanup_user_sq(struct qedr_dev *dev, struct qedr_qp *qp)
+{
+	qedr_free_pbl(dev, &qp->usq.pbl_info, qp->usq.pbl_tbl);
+	ib_umem_release(qp->usq.umem);
+}
+
+static void qedr_cleanup_user_rq(struct qedr_dev *dev, struct qedr_qp *qp)
+{
+	qedr_free_pbl(dev, &qp->urq.pbl_info, qp->urq.pbl_tbl);
+	ib_umem_release(qp->urq.umem);
+}
+
+static void qedr_cleanup_kernel_sq(struct qedr_dev *dev, struct qedr_qp *qp)
+{
+	dev->ops->common->chain_free(dev->cdev, &qp->sq.pbl);
+	kfree(qp->wqe_wr_id);
+}
+
+static void qedr_cleanup_kernel_rq(struct qedr_dev *dev, struct qedr_qp *qp)
+{
+	dev->ops->common->chain_free(dev->cdev, &qp->rq.pbl);
+	kfree(qp->rqe_wr_id);
+}
+
+static int qedr_check_qp_attrs(struct ib_pd *ibpd, struct qedr_dev *dev,
+			       struct ib_qp_init_attr *attrs)
+{
+	struct qedr_device_attr *qattr = &dev->attr;
+
+	/* QP0... attrs->qp_type == IB_QPT_GSI */
+	if (attrs->qp_type != IB_QPT_RC && attrs->qp_type != IB_QPT_GSI) {
+		DP_DEBUG(dev, QEDR_MSG_QP,
+			 "create qp: unsupported qp type=0x%x requested\n",
+			 attrs->qp_type);
+		return -EINVAL;
+	}
+
+	if (attrs->cap.max_send_wr > qattr->max_sqe) {
+		DP_ERR(dev,
+		       "create qp: cannot create a SQ with %d elements (max_send_wr=0x%x)\n",
+		       attrs->cap.max_send_wr, qattr->max_sqe);
+		return -EINVAL;
+	}
+
+	if (attrs->cap.max_inline_data > qattr->max_inline) {
+		DP_ERR(dev,
+		       "create qp: unsupported inline data size=0x%x requested (max_inline=0x%x)\n",
+		       attrs->cap.max_inline_data, qattr->max_inline);
+		return -EINVAL;
+	}
+
+	if (attrs->cap.max_send_sge > qattr->max_sge) {
+		DP_ERR(dev,
+		       "create qp: unsupported send_sge=0x%x requested (max_send_sge=0x%x)\n",
+		       attrs->cap.max_send_sge, qattr->max_sge);
+		return -EINVAL;
+	}
+
+	if (attrs->cap.max_recv_sge > qattr->max_sge) {
+		DP_ERR(dev,
+		       "create qp: unsupported recv_sge=0x%x requested (max_recv_sge=0x%x)\n",
+		       attrs->cap.max_recv_sge, qattr->max_sge);
+		return -EINVAL;
+	}
+
+	/* Unprivileged user space cannot create special QP */
+	if (ibpd->uobject && attrs->qp_type == IB_QPT_GSI) {
+		DP_ERR(dev,
+		       "create qp: userspace can't create special QPs of type=0x%x\n",
+		       attrs->qp_type);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static void qedr_copy_rq_uresp(struct qedr_create_qp_uresp *uresp,
+			       struct qedr_qp *qp)
+{
+	uresp->rq_db_offset = DB_ADDR_SHIFT(DQ_PWM_OFFSET_TCM_ROCE_RQ_PROD);
+	uresp->rq_icid = qp->icid;
+}
+
+static void qedr_copy_sq_uresp(struct qedr_create_qp_uresp *uresp,
+			       struct qedr_qp *qp)
+{
+	uresp->sq_db_offset = DB_ADDR_SHIFT(DQ_PWM_OFFSET_XCM_RDMA_SQ_PROD);
+	uresp->sq_icid = qp->icid + 1;
+}
+
+static int qedr_copy_qp_uresp(struct qedr_dev *dev,
+			      struct qedr_qp *qp, struct ib_udata *udata)
+{
+	struct qedr_create_qp_uresp uresp;
+	int rc;
+
+	memset(&uresp, 0, sizeof(uresp));
+	qedr_copy_sq_uresp(&uresp, qp);
+	qedr_copy_rq_uresp(&uresp, qp);
+
+	uresp.atomic_supported = dev->atomic_cap != IB_ATOMIC_NONE;
+	uresp.qp_id = qp->qp_id;
+
+	rc = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
+	if (rc)
+		DP_ERR(dev,
+		       "create qp: failed a copy to user space with qp icid=0x%x.\n",
+		       qp->icid);
+
+	return rc;
+}
+
+static void qedr_set_qp_init_params(struct qedr_dev *dev,
+				    struct qedr_qp *qp,
+				    struct qedr_pd *pd,
+				    struct ib_qp_init_attr *attrs)
+{
+	qp->pd = pd;
+
+	spin_lock_init(&qp->q_lock);
+
+	qp->qp_type = attrs->qp_type;
+	qp->max_inline_data = attrs->cap.max_inline_data;
+	qp->sq.max_sges = attrs->cap.max_send_sge;
+	qp->state = QED_ROCE_QP_STATE_RESET;
+	qp->signaled = (attrs->sq_sig_type == IB_SIGNAL_ALL_WR) ? true : false;
+	qp->sq_cq = get_qedr_cq(attrs->send_cq);
+	qp->rq_cq = get_qedr_cq(attrs->recv_cq);
+	qp->dev = dev;
+
+	DP_DEBUG(dev, QEDR_MSG_QP,
+		 "QP params:\tpd = %d, qp_type = %d, max_inline_data = %d, state = %d, signaled = %d, use_srq=%d\n",
+		 pd->pd_id, qp->qp_type, qp->max_inline_data,
+		 qp->state, qp->signaled, (attrs->srq) ? 1 : 0);
+	DP_DEBUG(dev, QEDR_MSG_QP,
+		 "SQ params:\tsq_max_sges = %d, sq_cq_id = %d\n",
+		 qp->sq.max_sges, qp->sq_cq->icid);
+	qp->rq.max_sges = attrs->cap.max_recv_sge;
+	DP_DEBUG(dev, QEDR_MSG_QP,
+		 "RQ params:\trq_max_sges = %d, rq_cq_id = %d\n",
+		 qp->rq.max_sges, qp->rq_cq->icid);
+}
+
+static inline void
+qedr_init_qp_user_params(struct qed_rdma_create_qp_in_params *params,
+			 struct qedr_create_qp_ureq *ureq)
+{
+	/* QP handle to be written in CQE */
+	params->qp_handle_lo = ureq->qp_handle_lo;
+	params->qp_handle_hi = ureq->qp_handle_hi;
+}
+
+static inline void
+qedr_init_qp_kernel_doorbell_sq(struct qedr_dev *dev, struct qedr_qp *qp)
+{
+	qp->sq.db = dev->db_addr +
+		    DB_ADDR_SHIFT(DQ_PWM_OFFSET_XCM_RDMA_SQ_PROD);
+	qp->sq.db_data.data.icid = qp->icid + 1;
+}
+
+static inline void
+qedr_init_qp_kernel_doorbell_rq(struct qedr_dev *dev, struct qedr_qp *qp)
+{
+	qp->rq.db = dev->db_addr +
+		    DB_ADDR_SHIFT(DQ_PWM_OFFSET_TCM_ROCE_RQ_PROD);
+	qp->rq.db_data.data.icid = qp->icid;
+}
+
+static inline int
+qedr_init_qp_kernel_params_rq(struct qedr_dev *dev,
+			      struct qedr_qp *qp, struct ib_qp_init_attr *attrs)
+{
+	/* Allocate driver internal RQ array */
+	qp->rqe_wr_id = kcalloc(qp->rq.max_wr, sizeof(*qp->rqe_wr_id),
+				GFP_KERNEL);
+	if (!qp->rqe_wr_id) {
+		DP_ERR(dev, "create qp: failed RQ shadow memory allocation\n");
+		return -ENOMEM;
+	}
+
+	DP_DEBUG(dev, QEDR_MSG_QP, "RQ max_wr set to %d.\n", qp->rq.max_wr);
+
+	return 0;
+}
+
+static inline int
+qedr_init_qp_kernel_params_sq(struct qedr_dev *dev,
+			      struct qedr_qp *qp,
+			      struct ib_qp_init_attr *attrs,
+			      struct qed_rdma_create_qp_in_params *params)
+{
+	u32 temp_max_wr;
+
+	/* Allocate driver internal SQ array */
+	temp_max_wr = attrs->cap.max_send_wr * dev->wq_multiplier;
+	temp_max_wr = min_t(u32, temp_max_wr, dev->attr.max_sqe);
+
+	/* temp_max_wr < attr->max_sqe < u16 so the casting is safe */
+	qp->sq.max_wr = (u16)temp_max_wr;
+	qp->wqe_wr_id = kcalloc(qp->sq.max_wr, sizeof(*qp->wqe_wr_id),
+				GFP_KERNEL);
+	if (!qp->wqe_wr_id) {
+		DP_ERR(dev, "create qp: failed SQ shadow memory allocation\n");
+		return -ENOMEM;
+	}
+
+	DP_DEBUG(dev, QEDR_MSG_QP, "SQ max_wr set to %d.\n", qp->sq.max_wr);
+
+	/* QP handle to be written in CQE */
+	params->qp_handle_lo = lower_32_bits((uintptr_t)qp);
+	params->qp_handle_hi = upper_32_bits((uintptr_t)qp);
+
+	return 0;
+}
+
+static inline int qedr_init_qp_kernel_sq(struct qedr_dev *dev,
+					 struct qedr_qp *qp,
+					 struct ib_qp_init_attr *attrs)
+{
+	u32 n_sq_elems, n_sq_entries;
+	int rc;
+
+	/* A single work request may take up to QEDR_MAX_SQ_WQE_SIZE elements in
+	 * the ring. The ring should allow at least a single WR, even if the
+	 * user requested none, due to allocation issues.
+	 */
+	n_sq_entries = attrs->cap.max_send_wr;
+	n_sq_entries = min_t(u32, n_sq_entries, dev->attr.max_sqe);
+	n_sq_entries = max_t(u32, n_sq_entries, 1);
+	n_sq_elems = n_sq_entries * QEDR_MAX_SQE_ELEMENTS_PER_SQE;
+	rc = dev->ops->common->chain_alloc(dev->cdev,
+					   QED_CHAIN_USE_TO_PRODUCE,
+					   QED_CHAIN_MODE_PBL,
+					   QED_CHAIN_CNT_TYPE_U32,
+					   n_sq_elems,
+					   QEDR_SQE_ELEMENT_SIZE,
+					   &qp->sq.pbl);
+	if (rc) {
+		DP_ERR(dev, "failed to allocate QP %p SQ\n", qp);
+		return rc;
+	}
+
+	DP_DEBUG(dev, QEDR_MSG_SQ,
+		 "SQ Pbl base addr = %llx max_send_wr=%d max_wr=%d capacity=%d, rc=%d\n",
+		 qed_chain_get_pbl_phys(&qp->sq.pbl), attrs->cap.max_send_wr,
+		 n_sq_entries, qed_chain_get_capacity(&qp->sq.pbl), rc);
+	return 0;
+}
+
+static inline int qedr_init_qp_kernel_rq(struct qedr_dev *dev,
+					 struct qedr_qp *qp,
+					 struct ib_qp_init_attr *attrs)
+{
+	u32 n_rq_elems, n_rq_entries;
+	int rc;
+
+	/* A single work request may take up to QEDR_MAX_RQ_WQE_SIZE elements in
+	 * the ring. There ring should allow at least a single WR, even if the
+	 * user requested none, due to allocation issues.
+	 */
+	n_rq_entries = max_t(u32, attrs->cap.max_recv_wr, 1);
+	n_rq_elems = n_rq_entries * QEDR_MAX_RQE_ELEMENTS_PER_RQE;
+	rc = dev->ops->common->chain_alloc(dev->cdev,
+					   QED_CHAIN_USE_TO_CONSUME_PRODUCE,
+					   QED_CHAIN_MODE_PBL,
+					   QED_CHAIN_CNT_TYPE_U32,
+					   n_rq_elems,
+					   QEDR_RQE_ELEMENT_SIZE,
+					   &qp->rq.pbl);
+
+	if (rc) {
+		DP_ERR(dev, "failed to allocate memory for QP %p RQ\n", qp);
+		return -ENOMEM;
+	}
+
+	DP_DEBUG(dev, QEDR_MSG_RQ,
+		 "RQ Pbl base addr = %llx max_recv_wr=%d max_wr=%d capacity=%d, rc=%d\n",
+		 qed_chain_get_pbl_phys(&qp->rq.pbl), attrs->cap.max_recv_wr,
+		 n_rq_entries, qed_chain_get_capacity(&qp->rq.pbl), rc);
+
+	/* n_rq_entries < u16 so the casting is safe */
+	qp->rq.max_wr = (u16)n_rq_entries;
+
+	return 0;
+}
+
+static inline void
+qedr_init_qp_in_params_sq(struct qedr_dev *dev,
+			  struct qedr_pd *pd,
+			  struct qedr_qp *qp,
+			  struct ib_qp_init_attr *attrs,
+			  struct ib_udata *udata,
+			  struct qed_rdma_create_qp_in_params *params)
+{
+	/* QP handle to be written in an async event */
+	params->qp_handle_async_lo = lower_32_bits((uintptr_t)qp);
+	params->qp_handle_async_hi = upper_32_bits((uintptr_t)qp);
+
+	params->signal_all = (attrs->sq_sig_type == IB_SIGNAL_ALL_WR);
+	params->fmr_and_reserved_lkey = !udata;
+	params->pd = pd->pd_id;
+	params->dpi = pd->uctx ? pd->uctx->dpi : dev->dpi;
+	params->sq_cq_id = get_qedr_cq(attrs->send_cq)->icid;
+	params->max_sq_sges = 0;
+	params->stats_queue = 0;
+
+	if (udata) {
+		params->sq_num_pages = qp->usq.pbl_info.num_pbes;
+		params->sq_pbl_ptr = qp->usq.pbl_tbl->pa;
+	} else {
+		params->sq_num_pages = qed_chain_get_page_cnt(&qp->sq.pbl);
+		params->sq_pbl_ptr = qed_chain_get_pbl_phys(&qp->sq.pbl);
+	}
+}
+
+static inline void
+qedr_init_qp_in_params_rq(struct qedr_qp *qp,
+			  struct ib_qp_init_attr *attrs,
+			  struct ib_udata *udata,
+			  struct qed_rdma_create_qp_in_params *params)
+{
+	params->rq_cq_id = get_qedr_cq(attrs->recv_cq)->icid;
+	params->srq_id = 0;
+	params->use_srq = false;
+
+	if (udata) {
+		params->rq_num_pages = qp->urq.pbl_info.num_pbes;
+		params->rq_pbl_ptr = qp->urq.pbl_tbl->pa;
+	} else {
+		params->rq_num_pages = qed_chain_get_page_cnt(&qp->rq.pbl);
+		params->rq_pbl_ptr = qed_chain_get_pbl_phys(&qp->rq.pbl);
+	}
+}
+
+static inline void qedr_qp_user_print(struct qedr_dev *dev, struct qedr_qp *qp)
+{
+	DP_DEBUG(dev, QEDR_MSG_QP,
+		 "create qp: successfully created user QP. qp=%p, sq_addr=0x%llx, sq_len=%zd, rq_addr=0x%llx, rq_len=%zd\n",
+		 qp, qp->usq.buf_addr, qp->usq.buf_len, qp->urq.buf_addr,
+		 qp->urq.buf_len);
+}
+
+static inline int qedr_init_user_qp(struct ib_ucontext *ib_ctx,
+				    struct qedr_dev *dev,
+				    struct qedr_qp *qp,
+				    struct qedr_create_qp_ureq *ureq)
+{
+	int rc;
+
+	/* SQ - read access only (0), dma sync not required (0) */
+	rc = qedr_init_user_queue(ib_ctx, dev, &qp->usq, ureq->sq_addr,
+				  ureq->sq_len, 0, 0);
+	if (rc)
+		return rc;
+
+	/* RQ - read access only (0), dma sync not required (0) */
+	rc = qedr_init_user_queue(ib_ctx, dev, &qp->urq, ureq->rq_addr,
+				  ureq->rq_len, 0, 0);
+
+	if (rc)
+		qedr_cleanup_user_sq(dev, qp);
+	return rc;
+}
+
+static inline int
+qedr_init_kernel_qp(struct qedr_dev *dev,
+		    struct qedr_qp *qp,
+		    struct ib_qp_init_attr *attrs,
+		    struct qed_rdma_create_qp_in_params *params)
+{
+	int rc;
+
+	rc = qedr_init_qp_kernel_sq(dev, qp, attrs);
+	if (rc) {
+		DP_ERR(dev, "failed to init kernel QP %p SQ\n", qp);
+		return rc;
+	}
+
+	rc = qedr_init_qp_kernel_params_sq(dev, qp, attrs, params);
+	if (rc) {
+		dev->ops->common->chain_free(dev->cdev, &qp->sq.pbl);
+		DP_ERR(dev, "failed to init kernel QP %p SQ params\n", qp);
+		return rc;
+	}
+
+	rc = qedr_init_qp_kernel_rq(dev, qp, attrs);
+	if (rc) {
+		qedr_cleanup_kernel_sq(dev, qp);
+		DP_ERR(dev, "failed to init kernel QP %p RQ\n", qp);
+		return rc;
+	}
+
+	rc = qedr_init_qp_kernel_params_rq(dev, qp, attrs);
+	if (rc) {
+		DP_ERR(dev, "failed to init kernel QP %p RQ params\n", qp);
+		qedr_cleanup_kernel_sq(dev, qp);
+		dev->ops->common->chain_free(dev->cdev, &qp->rq.pbl);
+		return rc;
+	}
+
+	return rc;
+}
+
+struct ib_qp *qedr_create_qp(struct ib_pd *ibpd,
+			     struct ib_qp_init_attr *attrs,
+			     struct ib_udata *udata)
+{
+	struct qedr_dev *dev = get_qedr_dev(ibpd->device);
+	struct qed_rdma_create_qp_out_params out_params;
+	struct qed_rdma_create_qp_in_params in_params;
+	struct qedr_pd *pd = get_qedr_pd(ibpd);
+	struct ib_ucontext *ib_ctx = NULL;
+	struct qedr_ucontext *ctx = NULL;
+	struct qedr_create_qp_ureq ureq;
+	struct qedr_qp *qp;
+	int rc = 0;
+
+	DP_DEBUG(dev, QEDR_MSG_QP, "create qp: called from %s, pd=%p\n",
+		 udata ? "user library" : "kernel", pd);
+
+	rc = qedr_check_qp_attrs(ibpd, dev, attrs);
+	if (rc)
+		return ERR_PTR(rc);
+
+	qp = kzalloc(sizeof(*qp), GFP_KERNEL);
+	if (!qp) {
+		DP_ERR(dev, "create qp: failed allocating memory\n");
+		return ERR_PTR(-ENOMEM);
+	}
+
+	if (attrs->srq)
+		return ERR_PTR(-EINVAL);
+
+	DP_DEBUG(dev, QEDR_MSG_QP,
+		 "create qp: sq_cq=%p, sq_icid=%d, rq_cq=%p, rq_icid=%d\n",
+		 get_qedr_cq(attrs->send_cq),
+		 get_qedr_cq(attrs->send_cq)->icid,
+		 get_qedr_cq(attrs->recv_cq),
+		 get_qedr_cq(attrs->recv_cq)->icid);
+
+	qedr_set_qp_init_params(dev, qp, pd, attrs);
+
+	memset(&in_params, 0, sizeof(in_params));
+
+	if (udata) {
+		if (!(udata && ibpd->uobject && ibpd->uobject->context))
+			goto err0;
+
+		ib_ctx = ibpd->uobject->context;
+		ctx = get_qedr_ucontext(ib_ctx);
+
+		memset(&ureq, 0, sizeof(ureq));
+		if (ib_copy_from_udata(&ureq, udata, sizeof(ureq))) {
+			DP_ERR(dev,
+			       "create qp: problem copying data from user space\n");
+			goto err0;
+		}
+
+		rc = qedr_init_user_qp(ib_ctx, dev, qp, &ureq);
+		if (rc)
+			goto err0;
+
+		qedr_init_qp_user_params(&in_params, &ureq);
+	} else {
+		rc = qedr_init_kernel_qp(dev, qp, attrs, &in_params);
+		if (rc)
+			goto err0;
+	}
+
+	qedr_init_qp_in_params_sq(dev, pd, qp, attrs, udata, &in_params);
+	qedr_init_qp_in_params_rq(qp, attrs, udata, &in_params);
+
+	qp->qed_qp = dev->ops->rdma_create_qp(dev->rdma_ctx,
+					      &in_params, &out_params);
+
+	if (!qp->qed_qp)
+		goto err1;
+
+	qp->qp_id = out_params.qp_id;
+	qp->icid = out_params.icid;
+	qp->ibqp.qp_num = qp->qp_id;
+
+	if (udata) {
+		rc = qedr_copy_qp_uresp(dev, qp, udata);
+		if (rc)
+			goto err2;
+
+		qedr_qp_user_print(dev, qp);
+	} else {
+		qedr_init_qp_kernel_doorbell_sq(dev, qp);
+		qedr_init_qp_kernel_doorbell_rq(dev, qp);
+	}
+
+	DP_DEBUG(dev, QEDR_MSG_QP, "created %s space QP %p\n",
+		 udata ? "user" : "kernel", qp);
+
+	return &qp->ibqp;
+
+err2:
+	rc = dev->ops->rdma_destroy_qp(dev->rdma_ctx, qp->qed_qp);
+	if (rc)
+		DP_ERR(dev, "create qp: fatal fault. rc=%d", rc);
+err1:
+	if (udata) {
+		qedr_cleanup_user_sq(dev, qp);
+		qedr_cleanup_user_rq(dev, qp);
+	} else {
+		qedr_cleanup_kernel_sq(dev, qp);
+		qedr_cleanup_kernel_rq(dev, qp);
+	}
+
+err0:
+	kfree(qp);
+
+	return ERR_PTR(-EFAULT);
+}
+
+enum ib_qp_state qedr_get_ibqp_state(enum qed_roce_qp_state qp_state)
+{
+	switch (qp_state) {
+	case QED_ROCE_QP_STATE_RESET:
+		return IB_QPS_RESET;
+	case QED_ROCE_QP_STATE_INIT:
+		return IB_QPS_INIT;
+	case QED_ROCE_QP_STATE_RTR:
+		return IB_QPS_RTR;
+	case QED_ROCE_QP_STATE_RTS:
+		return IB_QPS_RTS;
+	case QED_ROCE_QP_STATE_SQD:
+		return IB_QPS_SQD;
+	case QED_ROCE_QP_STATE_ERR:
+		return IB_QPS_ERR;
+	case QED_ROCE_QP_STATE_SQE:
+		return IB_QPS_SQE;
+	}
+	return IB_QPS_ERR;
+}
+
+enum qed_roce_qp_state qedr_get_state_from_ibqp(enum ib_qp_state qp_state)
+{
+	switch (qp_state) {
+	case IB_QPS_RESET:
+		return QED_ROCE_QP_STATE_RESET;
+	case IB_QPS_INIT:
+		return QED_ROCE_QP_STATE_INIT;
+	case IB_QPS_RTR:
+		return QED_ROCE_QP_STATE_RTR;
+	case IB_QPS_RTS:
+		return QED_ROCE_QP_STATE_RTS;
+	case IB_QPS_SQD:
+		return QED_ROCE_QP_STATE_SQD;
+	case IB_QPS_ERR:
+		return QED_ROCE_QP_STATE_ERR;
+	default:
+		return QED_ROCE_QP_STATE_ERR;
+	}
+}
+
+static void qedr_reset_qp_hwq_info(struct qedr_qp_hwq_info *qph)
+{
+	qed_chain_reset(&qph->pbl);
+	qph->prod = 0;
+	qph->cons = 0;
+	qph->wqe_cons = 0;
+	qph->db_data.data.value = cpu_to_le16(0);
+}
+
+static int qedr_update_qp_state(struct qedr_dev *dev,
+				struct qedr_qp *qp,
+				enum qed_roce_qp_state new_state)
+{
+	int status = 0;
+
+	if (new_state == qp->state)
+		return 1;
+
+	switch (qp->state) {
+	case QED_ROCE_QP_STATE_RESET:
+		switch (new_state) {
+		case QED_ROCE_QP_STATE_INIT:
+			qp->prev_wqe_size = 0;
+			qedr_reset_qp_hwq_info(&qp->sq);
+			qedr_reset_qp_hwq_info(&qp->rq);
+			break;
+		default:
+			status = -EINVAL;
+			break;
+		};
+		break;
+	case QED_ROCE_QP_STATE_INIT:
+		switch (new_state) {
+		case QED_ROCE_QP_STATE_RTR:
+			/* Update doorbell (in case post_recv was
+			 * done before move to RTR)
+			 */
+			wmb();
+			writel(qp->rq.db_data.raw, qp->rq.db);
+			/* Make sure write takes effect */
+			mmiowb();
+			break;
+		case QED_ROCE_QP_STATE_ERR:
+			break;
+		default:
+			/* Invalid state change. */
+			status = -EINVAL;
+			break;
+		};
+		break;
+	case QED_ROCE_QP_STATE_RTR:
+		/* RTR->XXX */
+		switch (new_state) {
+		case QED_ROCE_QP_STATE_RTS:
+			break;
+		case QED_ROCE_QP_STATE_ERR:
+			break;
+		default:
+			/* Invalid state change. */
+			status = -EINVAL;
+			break;
+		};
+		break;
+	case QED_ROCE_QP_STATE_RTS:
+		/* RTS->XXX */
+		switch (new_state) {
+		case QED_ROCE_QP_STATE_SQD:
+			break;
+		case QED_ROCE_QP_STATE_ERR:
+			break;
+		default:
+			/* Invalid state change. */
+			status = -EINVAL;
+			break;
+		};
+		break;
+	case QED_ROCE_QP_STATE_SQD:
+		/* SQD->XXX */
+		switch (new_state) {
+		case QED_ROCE_QP_STATE_RTS:
+		case QED_ROCE_QP_STATE_ERR:
+			break;
+		default:
+			/* Invalid state change. */
+			status = -EINVAL;
+			break;
+		};
+		break;
+	case QED_ROCE_QP_STATE_ERR:
+		/* ERR->XXX */
+		switch (new_state) {
+		case QED_ROCE_QP_STATE_RESET:
+			break;
+		default:
+			status = -EINVAL;
+			break;
+		};
+		break;
+	default:
+		status = -EINVAL;
+		break;
+	};
+
+	return status;
+}
+
+int qedr_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
+		   int attr_mask, struct ib_udata *udata)
+{
+	struct qedr_qp *qp = get_qedr_qp(ibqp);
+	struct qed_rdma_modify_qp_in_params qp_params = { 0 };
+	struct qedr_dev *dev = get_qedr_dev(&qp->dev->ibdev);
+	enum ib_qp_state old_qp_state, new_qp_state;
+	int rc = 0;
+
+	DP_DEBUG(dev, QEDR_MSG_QP,
+		 "modify qp: qp %p attr_mask=0x%x, state=%d", qp, attr_mask,
+		 attr->qp_state);
+
+	old_qp_state = qedr_get_ibqp_state(qp->state);
+	if (attr_mask & IB_QP_STATE)
+		new_qp_state = attr->qp_state;
+	else
+		new_qp_state = old_qp_state;
+
+	if (!ib_modify_qp_is_ok
+	    (old_qp_state, new_qp_state, ibqp->qp_type, attr_mask,
+	     IB_LINK_LAYER_ETHERNET)) {
+		DP_ERR(dev,
+		       "modify qp: invalid attribute mask=0x%x specified for\n"
+		       "qpn=0x%x of type=0x%x old_qp_state=0x%x, new_qp_state=0x%x\n",
+		       attr_mask, qp->qp_id, ibqp->qp_type, old_qp_state,
+		       new_qp_state);
+		rc = -EINVAL;
+		goto err;
+	}
+
+	/* Translate the masks... */
+	if (attr_mask & IB_QP_STATE) {
+		SET_FIELD(qp_params.modify_flags,
+			  QED_RDMA_MODIFY_QP_VALID_NEW_STATE, 1);
+		qp_params.new_state = qedr_get_state_from_ibqp(attr->qp_state);
+	}
+
+	if (attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY)
+		qp_params.sqd_async = true;
+
+	if (attr_mask & IB_QP_PKEY_INDEX) {
+		SET_FIELD(qp_params.modify_flags,
+			  QED_ROCE_MODIFY_QP_VALID_PKEY, 1);
+		if (attr->pkey_index >= QEDR_ROCE_PKEY_TABLE_LEN) {
+			rc = -EINVAL;
+			goto err;
+		}
+
+		qp_params.pkey = QEDR_ROCE_PKEY_DEFAULT;
+	}
+
+	if (attr_mask & IB_QP_QKEY)
+		qp->qkey = attr->qkey;
+
+	if (attr_mask & IB_QP_ACCESS_FLAGS) {
+		SET_FIELD(qp_params.modify_flags,
+			  QED_RDMA_MODIFY_QP_VALID_RDMA_OPS_EN, 1);
+		qp_params.incoming_rdma_read_en = attr->qp_access_flags &
+						  IB_ACCESS_REMOTE_READ;
+		qp_params.incoming_rdma_write_en = attr->qp_access_flags &
+						   IB_ACCESS_REMOTE_WRITE;
+		qp_params.incoming_atomic_en = attr->qp_access_flags &
+					       IB_ACCESS_REMOTE_ATOMIC;
+	}
+
+	if (attr_mask & (IB_QP_AV | IB_QP_PATH_MTU)) {
+		if (attr_mask & IB_QP_PATH_MTU) {
+			if (attr->path_mtu < IB_MTU_256 ||
+			    attr->path_mtu > IB_MTU_4096) {
+				pr_err("error: Only MTU sizes of 256, 512, 1024, 2048 and 4096 are supported by RoCE\n");
+				rc = -EINVAL;
+				goto err;
+			}
+			qp->mtu = min(ib_mtu_enum_to_int(attr->path_mtu),
+				      ib_mtu_enum_to_int(iboe_get_mtu
+							 (dev->ndev->mtu)));
+		}
+
+		if (!qp->mtu) {
+			qp->mtu =
+			ib_mtu_enum_to_int(iboe_get_mtu(dev->ndev->mtu));
+			pr_err("Fixing zeroed MTU to qp->mtu = %d\n", qp->mtu);
+		}
+
+		SET_FIELD(qp_params.modify_flags,
+			  QED_ROCE_MODIFY_QP_VALID_ADDRESS_VECTOR, 1);
+
+		qp_params.traffic_class_tos = attr->ah_attr.grh.traffic_class;
+		qp_params.flow_label = attr->ah_attr.grh.flow_label;
+		qp_params.hop_limit_ttl = attr->ah_attr.grh.hop_limit;
+
+		qp->sgid_idx = attr->ah_attr.grh.sgid_index;
+
+		rc = get_gid_info_from_table(ibqp, attr, attr_mask, &qp_params);
+		if (rc) {
+			DP_ERR(dev,
+			       "modify qp: problems with GID index %d (rc=%d)\n",
+			       attr->ah_attr.grh.sgid_index, rc);
+			return rc;
+		}
+
+		rc = qedr_get_dmac(dev, &attr->ah_attr,
+				   qp_params.remote_mac_addr);
+		if (rc)
+			return rc;
+
+		qp_params.use_local_mac = true;
+		ether_addr_copy(qp_params.local_mac_addr, dev->ndev->dev_addr);
+
+		DP_DEBUG(dev, QEDR_MSG_QP, "dgid=%x:%x:%x:%x\n",
+			 qp_params.dgid.dwords[0], qp_params.dgid.dwords[1],
+			 qp_params.dgid.dwords[2], qp_params.dgid.dwords[3]);
+		DP_DEBUG(dev, QEDR_MSG_QP, "sgid=%x:%x:%x:%x\n",
+			 qp_params.sgid.dwords[0], qp_params.sgid.dwords[1],
+			 qp_params.sgid.dwords[2], qp_params.sgid.dwords[3]);
+		DP_DEBUG(dev, QEDR_MSG_QP, "remote_mac=[%pM]\n",
+			 qp_params.remote_mac_addr);
+;
+
+		qp_params.mtu = qp->mtu;
+		qp_params.lb_indication = false;
+	}
+
+	if (!qp_params.mtu) {
+		/* Stay with current MTU */
+		if (qp->mtu)
+			qp_params.mtu = qp->mtu;
+		else
+			qp_params.mtu =
+			    ib_mtu_enum_to_int(iboe_get_mtu(dev->ndev->mtu));
+	}
+
+	if (attr_mask & IB_QP_TIMEOUT) {
+		SET_FIELD(qp_params.modify_flags,
+			  QED_ROCE_MODIFY_QP_VALID_ACK_TIMEOUT, 1);
+
+		qp_params.ack_timeout = attr->timeout;
+		if (attr->timeout) {
+			u32 temp;
+
+			temp = 4096 * (1UL << attr->timeout) / 1000 / 1000;
+			/* FW requires [msec] */
+			qp_params.ack_timeout = temp;
+		} else {
+			/* Infinite */
+			qp_params.ack_timeout = 0;
+		}
+	}
+	if (attr_mask & IB_QP_RETRY_CNT) {
+		SET_FIELD(qp_params.modify_flags,
+			  QED_ROCE_MODIFY_QP_VALID_RETRY_CNT, 1);
+		qp_params.retry_cnt = attr->retry_cnt;
+	}
+
+	if (attr_mask & IB_QP_RNR_RETRY) {
+		SET_FIELD(qp_params.modify_flags,
+			  QED_ROCE_MODIFY_QP_VALID_RNR_RETRY_CNT, 1);
+		qp_params.rnr_retry_cnt = attr->rnr_retry;
+	}
+
+	if (attr_mask & IB_QP_RQ_PSN) {
+		SET_FIELD(qp_params.modify_flags,
+			  QED_ROCE_MODIFY_QP_VALID_RQ_PSN, 1);
+		qp_params.rq_psn = attr->rq_psn;
+		qp->rq_psn = attr->rq_psn;
+	}
+
+	if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
+		if (attr->max_rd_atomic > dev->attr.max_qp_req_rd_atomic_resc) {
+			rc = -EINVAL;
+			DP_ERR(dev,
+			       "unsupported max_rd_atomic=%d, supported=%d\n",
+			       attr->max_rd_atomic,
+			       dev->attr.max_qp_req_rd_atomic_resc);
+			goto err;
+		}
+
+		SET_FIELD(qp_params.modify_flags,
+			  QED_RDMA_MODIFY_QP_VALID_MAX_RD_ATOMIC_REQ, 1);
+		qp_params.max_rd_atomic_req = attr->max_rd_atomic;
+	}
+
+	if (attr_mask & IB_QP_MIN_RNR_TIMER) {
+		SET_FIELD(qp_params.modify_flags,
+			  QED_ROCE_MODIFY_QP_VALID_MIN_RNR_NAK_TIMER, 1);
+		qp_params.min_rnr_nak_timer = attr->min_rnr_timer;
+	}
+
+	if (attr_mask & IB_QP_SQ_PSN) {
+		SET_FIELD(qp_params.modify_flags,
+			  QED_ROCE_MODIFY_QP_VALID_SQ_PSN, 1);
+		qp_params.sq_psn = attr->sq_psn;
+		qp->sq_psn = attr->sq_psn;
+	}
+
+	if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
+		if (attr->max_dest_rd_atomic >
+		    dev->attr.max_qp_resp_rd_atomic_resc) {
+			DP_ERR(dev,
+			       "unsupported max_dest_rd_atomic=%d, supported=%d\n",
+			       attr->max_dest_rd_atomic,
+			       dev->attr.max_qp_resp_rd_atomic_resc);
+
+			rc = -EINVAL;
+			goto err;
+		}
+
+		SET_FIELD(qp_params.modify_flags,
+			  QED_RDMA_MODIFY_QP_VALID_MAX_RD_ATOMIC_RESP, 1);
+		qp_params.max_rd_atomic_resp = attr->max_dest_rd_atomic;
+	}
+
+	if (attr_mask & IB_QP_DEST_QPN) {
+		SET_FIELD(qp_params.modify_flags,
+			  QED_ROCE_MODIFY_QP_VALID_DEST_QP, 1);
+
+		qp_params.dest_qp = attr->dest_qp_num;
+		qp->dest_qp_num = attr->dest_qp_num;
+	}
+
+	if (qp->qp_type != IB_QPT_GSI)
+		rc = dev->ops->rdma_modify_qp(dev->rdma_ctx,
+					      qp->qed_qp, &qp_params);
+
+	if (attr_mask & IB_QP_STATE) {
+		if ((qp->qp_type != IB_QPT_GSI) && (!udata))
+			qedr_update_qp_state(dev, qp, qp_params.new_state);
+		qp->state = qp_params.new_state;
+	}
+
+err:
+	return rc;
+}
+
+static int qedr_to_ib_qp_acc_flags(struct qed_rdma_query_qp_out_params *params)
+{
+	int ib_qp_acc_flags = 0;
+
+	if (params->incoming_rdma_write_en)
+		ib_qp_acc_flags |= IB_ACCESS_REMOTE_WRITE;
+	if (params->incoming_rdma_read_en)
+		ib_qp_acc_flags |= IB_ACCESS_REMOTE_READ;
+	if (params->incoming_atomic_en)
+		ib_qp_acc_flags |= IB_ACCESS_REMOTE_ATOMIC;
+	ib_qp_acc_flags |= IB_ACCESS_LOCAL_WRITE;
+	return ib_qp_acc_flags;
+}
+
+int qedr_query_qp(struct ib_qp *ibqp,
+		  struct ib_qp_attr *qp_attr,
+		  int attr_mask, struct ib_qp_init_attr *qp_init_attr)
+{
+	struct qed_rdma_query_qp_out_params params;
+	struct qedr_qp *qp = get_qedr_qp(ibqp);
+	struct qedr_dev *dev = qp->dev;
+	int rc = 0;
+
+	memset(&params, 0, sizeof(params));
+
+	rc = dev->ops->rdma_query_qp(dev->rdma_ctx, qp->qed_qp, &params);
+	if (rc)
+		goto err;
+
+	memset(qp_attr, 0, sizeof(*qp_attr));
+	memset(qp_init_attr, 0, sizeof(*qp_init_attr));
+
+	qp_attr->qp_state = qedr_get_ibqp_state(params.state);
+	qp_attr->cur_qp_state = qedr_get_ibqp_state(params.state);
+	qp_attr->path_mtu = iboe_get_mtu(params.mtu);
+	qp_attr->path_mig_state = IB_MIG_MIGRATED;
+	qp_attr->rq_psn = params.rq_psn;
+	qp_attr->sq_psn = params.sq_psn;
+	qp_attr->dest_qp_num = params.dest_qp;
+
+	qp_attr->qp_access_flags = qedr_to_ib_qp_acc_flags(&params);
+
+	qp_attr->cap.max_send_wr = qp->sq.max_wr;
+	qp_attr->cap.max_recv_wr = qp->rq.max_wr;
+	qp_attr->cap.max_send_sge = qp->sq.max_sges;
+	qp_attr->cap.max_recv_sge = qp->rq.max_sges;
+	qp_attr->cap.max_inline_data = qp->max_inline_data;
+	qp_init_attr->cap = qp_attr->cap;
+
+	memcpy(&qp_attr->ah_attr.grh.dgid.raw[0], &params.dgid.bytes[0],
+	       sizeof(qp_attr->ah_attr.grh.dgid.raw));
+
+	qp_attr->ah_attr.grh.flow_label = params.flow_label;
+	qp_attr->ah_attr.grh.sgid_index = qp->sgid_idx;
+	qp_attr->ah_attr.grh.hop_limit = params.hop_limit_ttl;
+	qp_attr->ah_attr.grh.traffic_class = params.traffic_class_tos;
+
+	qp_attr->ah_attr.ah_flags = IB_AH_GRH;
+	qp_attr->ah_attr.port_num = 1;
+	qp_attr->ah_attr.sl = 0;
+	qp_attr->timeout = params.timeout;
+	qp_attr->rnr_retry = params.rnr_retry;
+	qp_attr->retry_cnt = params.retry_cnt;
+	qp_attr->min_rnr_timer = params.min_rnr_nak_timer;
+	qp_attr->pkey_index = params.pkey_index;
+	qp_attr->port_num = 1;
+	qp_attr->ah_attr.src_path_bits = 0;
+	qp_attr->ah_attr.static_rate = 0;
+	qp_attr->alt_pkey_index = 0;
+	qp_attr->alt_port_num = 0;
+	qp_attr->alt_timeout = 0;
+	memset(&qp_attr->alt_ah_attr, 0, sizeof(qp_attr->alt_ah_attr));
+
+	qp_attr->sq_draining = (params.state == QED_ROCE_QP_STATE_SQD) ? 1 : 0;
+	qp_attr->max_dest_rd_atomic = params.max_dest_rd_atomic;
+	qp_attr->max_rd_atomic = params.max_rd_atomic;
+	qp_attr->en_sqd_async_notify = (params.sqd_async) ? 1 : 0;
+
+	DP_DEBUG(dev, QEDR_MSG_QP, "QEDR_QUERY_QP: max_inline_data=%d\n",
+		 qp_attr->cap.max_inline_data);
+
+err:
+	return rc;
+}
+
+int qedr_destroy_qp(struct ib_qp *ibqp)
+{
+	struct qedr_qp *qp = get_qedr_qp(ibqp);
+	struct qedr_dev *dev = qp->dev;
+	struct ib_qp_attr attr;
+	int attr_mask = 0;
+	int rc = 0;
+
+	DP_DEBUG(dev, QEDR_MSG_QP, "destroy qp: destroying %p, qp type=%d\n",
+		 qp, qp->qp_type);
+
+	if (qp->state != (QED_ROCE_QP_STATE_RESET | QED_ROCE_QP_STATE_ERR |
+			  QED_ROCE_QP_STATE_INIT)) {
+		attr.qp_state = IB_QPS_ERR;
+		attr_mask |= IB_QP_STATE;
+
+		/* Change the QP state to ERROR */
+		qedr_modify_qp(ibqp, &attr, attr_mask, NULL);
+	}
+
+	if (qp->qp_type != IB_QPT_GSI) {
+		rc = dev->ops->rdma_destroy_qp(dev->rdma_ctx, qp->qed_qp);
+		if (rc)
+			return rc;
+	}
+
+	if (ibqp->uobject && ibqp->uobject->context) {
+		qedr_cleanup_user_sq(dev, qp);
+		qedr_cleanup_user_rq(dev, qp);
+	} else {
+		qedr_cleanup_kernel_sq(dev, qp);
+		qedr_cleanup_kernel_rq(dev, qp);
+	}
+
+	kfree(qp);
+
+	return rc;
+}
diff --git a/drivers/infiniband/hw/qedr/verbs.h b/drivers/infiniband/hw/qedr/verbs.h
index 36c8a69..056d6cb 100644
--- a/drivers/infiniband/hw/qedr/verbs.h
+++ b/drivers/infiniband/hw/qedr/verbs.h
@@ -62,5 +62,12 @@ struct ib_cq *qedr_create_cq(struct ib_device *ibdev,
 int qedr_resize_cq(struct ib_cq *, int cqe, struct ib_udata *);
 int qedr_destroy_cq(struct ib_cq *);
 int qedr_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags);
+struct ib_qp *qedr_create_qp(struct ib_pd *, struct ib_qp_init_attr *attrs,
+			     struct ib_udata *);
+int qedr_modify_qp(struct ib_qp *, struct ib_qp_attr *attr,
+		   int attr_mask, struct ib_udata *udata);
+int qedr_query_qp(struct ib_qp *, struct ib_qp_attr *qp_attr,
+		  int qp_attr_mask, struct ib_qp_init_attr *);
+int qedr_destroy_qp(struct ib_qp *ibqp);
 
 #endif
diff --git a/include/uapi/rdma/qedr-abi.h b/include/uapi/rdma/qedr-abi.h
index b0fc5f2..75c270d 100644
--- a/include/uapi/rdma/qedr-abi.h
+++ b/include/uapi/rdma/qedr-abi.h
@@ -69,4 +69,38 @@ struct qedr_create_cq_uresp {
 	__u16 icid;
 };
 
+struct qedr_create_qp_ureq {
+	__u32 qp_handle_hi;
+	__u32 qp_handle_lo;
+
+	/* SQ */
+	/* user space virtual address of SQ buffer */
+	__u64 sq_addr;
+
+	/* length of SQ buffer */
+	__u64 sq_len;
+
+	/* RQ */
+	/* user space virtual address of RQ buffer */
+	__u64 rq_addr;
+
+	/* length of RQ buffer */
+	__u64 rq_len;
+};
+
+struct qedr_create_qp_uresp {
+	__u32 qp_id;
+	__u32 atomic_supported;
+
+	/* SQ */
+	__u32 sq_db_offset;
+	__u16 sq_icid;
+
+	/* RQ */
+	__u32 rq_db_offset;
+	__u16 rq_icid;
+
+	__u32 rq_db2_offset;
+};
+
 #endif /* __QEDR_USER_H__ */
-- 
1.8.3.1

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[PATCH qedr 06/10] qedr: Add support for memory registeration verbs

[Ram Amrani]

Add support for user, dma and memory regions registration.

Signed-off-by: Rajesh Borundia <rajesh.borundia-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
Signed-off-by: Ram Amrani <Ram.Amrani-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
---
 drivers/infiniband/hw/qedr/main.c  |  10 +-
 drivers/infiniband/hw/qedr/qedr.h  |  40 ++++
 drivers/infiniband/hw/qedr/verbs.c | 365 +++++++++++++++++++++++++++++++++++++
 drivers/infiniband/hw/qedr/verbs.h |  14 ++
 4 files changed, 428 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/qedr/main.c b/drivers/infiniband/hw/qedr/main.c
index 40864b4..613cc4d 100644
--- a/drivers/infiniband/hw/qedr/main.c
+++ b/drivers/infiniband/hw/qedr/main.c
@@ -100,7 +100,9 @@ static int qedr_register_device(struct qedr_dev *dev)
 				     QEDR_UVERBS(CREATE_QP) |
 				     QEDR_UVERBS(MODIFY_QP) |
 				     QEDR_UVERBS(QUERY_QP) |
-				     QEDR_UVERBS(DESTROY_QP);
+				     QEDR_UVERBS(DESTROY_QP) |
+				     QEDR_UVERBS(REG_MR) |
+				     QEDR_UVERBS(DEREG_MR);
 
 	dev->ibdev.phys_port_cnt = 1;
 	dev->ibdev.num_comp_vectors = dev->num_cnq;
@@ -133,6 +135,12 @@ static int qedr_register_device(struct qedr_dev *dev)
 
 	dev->ibdev.query_pkey = qedr_query_pkey;
 
+	dev->ibdev.get_dma_mr = qedr_get_dma_mr;
+	dev->ibdev.dereg_mr = qedr_dereg_mr;
+	dev->ibdev.reg_user_mr = qedr_reg_user_mr;
+	dev->ibdev.alloc_mr = qedr_alloc_mr;
+	dev->ibdev.map_mr_sg = qedr_map_mr_sg;
+
 	dev->ibdev.dma_device = &dev->pdev->dev;
 
 	dev->ibdev.get_link_layer = qedr_link_layer;
diff --git a/drivers/infiniband/hw/qedr/qedr.h b/drivers/infiniband/hw/qedr/qedr.h
index 2f97477..fe6b829 100644
--- a/drivers/infiniband/hw/qedr/qedr.h
+++ b/drivers/infiniband/hw/qedr/qedr.h
@@ -375,6 +375,41 @@ struct qedr_qp {
 	struct qedr_userq urq;
 };
 
+struct qedr_ah {
+	struct ib_ah ibah;
+	struct ib_ah_attr attr;
+};
+
+enum qedr_mr_type {
+	QEDR_MR_USER,
+	QEDR_MR_KERNEL,
+	QEDR_MR_DMA,
+	QEDR_MR_FRMR
+};
+
+struct mr_info {
+	struct qedr_pbl *pbl_table;
+	struct qedr_pbl_info pbl_info;
+	struct list_head free_pbl_list;
+	struct list_head inuse_pbl_list;
+	u32 completed;
+	u32 completed_handled;
+};
+
+struct qedr_mr {
+	struct ib_mr ibmr;
+	struct ib_umem *umem;
+
+	struct qed_rdma_register_tid_in_params hw_mr;
+	enum qedr_mr_type type;
+
+	struct qedr_dev *dev;
+	struct mr_info info;
+
+	u64 *pages;
+	u32 npages;
+};
+
 static inline int qedr_get_dmac(struct qedr_dev *dev,
 				struct ib_ah_attr *ah_attr, u8 *mac_addr)
 {
@@ -418,4 +453,9 @@ static inline struct qedr_qp *get_qedr_qp(struct ib_qp *ibqp)
 {
 	return container_of(ibqp, struct qedr_qp, ibqp);
 }
+
+static inline struct qedr_mr *get_qedr_mr(struct ib_mr *ibmr)
+{
+	return container_of(ibmr, struct qedr_mr, ibmr);
+}
 #endif
diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c
index 87f72ec..084aed4 100644
--- a/drivers/infiniband/hw/qedr/verbs.c
+++ b/drivers/infiniband/hw/qedr/verbs.c
@@ -2091,3 +2091,368 @@ int qedr_destroy_qp(struct ib_qp *ibqp)
 
 	return rc;
 }
+
+static void free_mr_info(struct qedr_dev *dev, struct mr_info *info)
+{
+	struct qedr_pbl *pbl, *tmp;
+
+	if (info->pbl_table)
+		list_add_tail(&info->pbl_table->list_entry,
+			      &info->free_pbl_list);
+
+	if (!list_empty(&info->inuse_pbl_list))
+		list_splice(&info->inuse_pbl_list, &info->free_pbl_list);
+
+	list_for_each_entry_safe(pbl, tmp, &info->free_pbl_list, list_entry) {
+		list_del(&pbl->list_entry);
+		qedr_free_pbl(dev, &info->pbl_info, pbl);
+	}
+}
+
+static int init_mr_info(struct qedr_dev *dev, struct mr_info *info,
+			size_t page_list_len, bool two_layered)
+{
+	struct qedr_pbl *tmp;
+	int rc;
+
+	INIT_LIST_HEAD(&info->free_pbl_list);
+	INIT_LIST_HEAD(&info->inuse_pbl_list);
+
+	rc = qedr_prepare_pbl_tbl(dev, &info->pbl_info,
+				  page_list_len, two_layered);
+	if (rc)
+		goto done;
+
+	info->pbl_table = qedr_alloc_pbl_tbl(dev, &info->pbl_info, GFP_KERNEL);
+	if (!info->pbl_table) {
+		rc = -ENOMEM;
+		goto done;
+	}
+
+	DP_DEBUG(dev, QEDR_MSG_MR, "pbl_table_pa = %pa\n",
+		 &info->pbl_table->pa);
+
+	/* in usual case we use 2 PBLs, so we add one to free
+	 * list and allocating another one
+	 */
+	tmp = qedr_alloc_pbl_tbl(dev, &info->pbl_info, GFP_KERNEL);
+	if (!tmp) {
+		DP_DEBUG(dev, QEDR_MSG_MR, "Extra PBL is not allocated\n");
+		goto done;
+	}
+
+	list_add_tail(&tmp->list_entry, &info->free_pbl_list);
+
+	DP_DEBUG(dev, QEDR_MSG_MR, "extra pbl_table_pa = %pa\n", &tmp->pa);
+
+done:
+	if (rc)
+		free_mr_info(dev, info);
+
+	return rc;
+}
+
+struct ib_mr *qedr_reg_user_mr(struct ib_pd *ibpd, u64 start, u64 len,
+			       u64 usr_addr, int acc, struct ib_udata *udata)
+{
+	struct qedr_dev *dev = get_qedr_dev(ibpd->device);
+	struct qedr_mr *mr;
+	struct qedr_pd *pd;
+	int rc = -ENOMEM;
+
+	pd = get_qedr_pd(ibpd);
+	DP_DEBUG(dev, QEDR_MSG_MR,
+		 "qedr_register user mr pd = %d start = %lld, len = %lld, usr_addr = %lld, acc = %d\n",
+		 pd->pd_id, start, len, usr_addr, acc);
+
+	if (acc & IB_ACCESS_REMOTE_WRITE && !(acc & IB_ACCESS_LOCAL_WRITE))
+		return ERR_PTR(-EINVAL);
+
+	mr = kzalloc(sizeof(*mr), GFP_KERNEL);
+	if (!mr)
+		return ERR_PTR(rc);
+
+	mr->type = QEDR_MR_USER;
+
+	mr->umem = ib_umem_get(ibpd->uobject->context, start, len, acc, 0);
+	if (IS_ERR(mr->umem)) {
+		rc = -EFAULT;
+		goto err0;
+	}
+
+	rc = init_mr_info(dev, &mr->info, ib_umem_page_count(mr->umem), 1);
+	if (rc)
+		goto err1;
+
+	qedr_populate_pbls(dev, mr->umem, mr->info.pbl_table,
+			   &mr->info.pbl_info);
+
+	rc = dev->ops->rdma_alloc_tid(dev->rdma_ctx, &mr->hw_mr.itid);
+	if (rc) {
+		DP_ERR(dev, "roce alloc tid returned an error %d\n", rc);
+		goto err1;
+	}
+
+	/* Index only, 18 bit long, lkey = itid << 8 | key */
+	mr->hw_mr.tid_type = QED_RDMA_TID_REGISTERED_MR;
+	mr->hw_mr.key = 0;
+	mr->hw_mr.pd = pd->pd_id;
+	mr->hw_mr.local_read = 1;
+	mr->hw_mr.local_write = (acc & IB_ACCESS_LOCAL_WRITE) ? 1 : 0;
+	mr->hw_mr.remote_read = (acc & IB_ACCESS_REMOTE_READ) ? 1 : 0;
+	mr->hw_mr.remote_write = (acc & IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
+	mr->hw_mr.remote_atomic = (acc & IB_ACCESS_REMOTE_ATOMIC) ? 1 : 0;
+	mr->hw_mr.mw_bind = false;
+	mr->hw_mr.pbl_ptr = mr->info.pbl_table[0].pa;
+	mr->hw_mr.pbl_two_level = mr->info.pbl_info.two_layered;
+	mr->hw_mr.pbl_page_size_log = ilog2(mr->info.pbl_info.pbl_size);
+	mr->hw_mr.page_size_log = ilog2(mr->umem->page_size);
+	mr->hw_mr.fbo = ib_umem_offset(mr->umem);
+	mr->hw_mr.length = len;
+	mr->hw_mr.vaddr = usr_addr;
+	mr->hw_mr.zbva = false;
+	mr->hw_mr.phy_mr = false;
+	mr->hw_mr.dma_mr = false;
+
+	rc = dev->ops->rdma_register_tid(dev->rdma_ctx, &mr->hw_mr);
+	if (rc) {
+		DP_ERR(dev, "roce register tid returned an error %d\n", rc);
+		goto err2;
+	}
+
+	mr->ibmr.lkey = mr->hw_mr.itid << 8 | mr->hw_mr.key;
+	if (mr->hw_mr.remote_write || mr->hw_mr.remote_read ||
+	    mr->hw_mr.remote_atomic)
+		mr->ibmr.rkey = mr->hw_mr.itid << 8 | mr->hw_mr.key;
+
+	DP_DEBUG(dev, QEDR_MSG_MR, "register user mr lkey: %x\n",
+		 mr->ibmr.lkey);
+	return &mr->ibmr;
+
+err2:
+	dev->ops->rdma_free_tid(dev->rdma_ctx, mr->hw_mr.itid);
+err1:
+	qedr_free_pbl(dev, &mr->info.pbl_info, mr->info.pbl_table);
+err0:
+	kfree(mr);
+	return ERR_PTR(rc);
+}
+
+int qedr_dereg_mr(struct ib_mr *ib_mr)
+{
+	struct qedr_mr *mr = get_qedr_mr(ib_mr);
+	struct qedr_dev *dev = get_qedr_dev(ib_mr->device);
+	int rc = 0;
+
+	rc = dev->ops->rdma_deregister_tid(dev->rdma_ctx, mr->hw_mr.itid);
+	if (rc)
+		return rc;
+
+	dev->ops->rdma_free_tid(dev->rdma_ctx, mr->hw_mr.itid);
+
+	if ((mr->type != QEDR_MR_DMA) && (mr->type != QEDR_MR_FRMR))
+		qedr_free_pbl(dev, &mr->info.pbl_info, mr->info.pbl_table);
+
+	/* it could be user registered memory. */
+	if (mr->umem)
+		ib_umem_release(mr->umem);
+
+	kfree(mr);
+
+	return rc;
+}
+
+struct qedr_mr *__qedr_alloc_mr(struct ib_pd *ibpd, int max_page_list_len)
+{
+	struct qedr_pd *pd = get_qedr_pd(ibpd);
+	struct qedr_dev *dev = get_qedr_dev(ibpd->device);
+	struct qedr_mr *mr;
+	int rc = -ENOMEM;
+
+	DP_DEBUG(dev, QEDR_MSG_MR,
+		 "qedr_alloc_frmr pd = %d max_page_list_len= %d\n", pd->pd_id,
+		 max_page_list_len);
+
+	mr = kzalloc(sizeof(*mr), GFP_KERNEL);
+	if (!mr)
+		return ERR_PTR(rc);
+
+	mr->dev = dev;
+	mr->type = QEDR_MR_FRMR;
+
+	rc = init_mr_info(dev, &mr->info, max_page_list_len, 1);
+	if (rc)
+		goto err0;
+
+	rc = dev->ops->rdma_alloc_tid(dev->rdma_ctx, &mr->hw_mr.itid);
+	if (rc) {
+		DP_ERR(dev, "roce alloc tid returned an error %d\n", rc);
+		goto err0;
+	}
+
+	/* Index only, 18 bit long, lkey = itid << 8 | key */
+	mr->hw_mr.tid_type = QED_RDMA_TID_FMR;
+	mr->hw_mr.key = 0;
+	mr->hw_mr.pd = pd->pd_id;
+	mr->hw_mr.local_read = 1;
+	mr->hw_mr.local_write = 0;
+	mr->hw_mr.remote_read = 0;
+	mr->hw_mr.remote_write = 0;
+	mr->hw_mr.remote_atomic = 0;
+	mr->hw_mr.mw_bind = false;
+	mr->hw_mr.pbl_ptr = 0;
+	mr->hw_mr.pbl_two_level = mr->info.pbl_info.two_layered;
+	mr->hw_mr.pbl_page_size_log = ilog2(mr->info.pbl_info.pbl_size);
+	mr->hw_mr.fbo = 0;
+	mr->hw_mr.length = 0;
+	mr->hw_mr.vaddr = 0;
+	mr->hw_mr.zbva = false;
+	mr->hw_mr.phy_mr = true;
+	mr->hw_mr.dma_mr = false;
+
+	rc = dev->ops->rdma_register_tid(dev->rdma_ctx, &mr->hw_mr);
+	if (rc) {
+		DP_ERR(dev, "roce register tid returned an error %d\n", rc);
+		goto err1;
+	}
+
+	mr->ibmr.lkey = mr->hw_mr.itid << 8 | mr->hw_mr.key;
+	mr->ibmr.rkey = mr->ibmr.lkey;
+
+	DP_DEBUG(dev, QEDR_MSG_MR, "alloc frmr: %x\n", mr->ibmr.lkey);
+	return mr;
+
+err1:
+	dev->ops->rdma_free_tid(dev->rdma_ctx, mr->hw_mr.itid);
+err0:
+	kfree(mr);
+	return ERR_PTR(rc);
+}
+
+struct ib_mr *qedr_alloc_mr(struct ib_pd *ibpd,
+			    enum ib_mr_type mr_type, u32 max_num_sg)
+{
+	struct qedr_dev *dev;
+	struct qedr_mr *mr;
+
+	if (mr_type != IB_MR_TYPE_MEM_REG)
+		return ERR_PTR(-EINVAL);
+
+	mr = __qedr_alloc_mr(ibpd, max_num_sg);
+
+	if (IS_ERR(mr))
+		return ERR_PTR(-EINVAL);
+
+	dev = mr->dev;
+
+	return &mr->ibmr;
+}
+
+static int qedr_set_page(struct ib_mr *ibmr, u64 addr)
+{
+	struct qedr_mr *mr = get_qedr_mr(ibmr);
+	struct qedr_pbl *pbl_table;
+	struct regpair *pbe;
+	u32 pbes_in_page;
+
+	if (unlikely(mr->npages == mr->info.pbl_info.num_pbes)) {
+		DP_ERR(mr->dev, "qedr_set_page failes when %d\n", mr->npages);
+		return -ENOMEM;
+	}
+
+	DP_DEBUG(mr->dev, QEDR_MSG_MR, "qedr_set_page pages[%d] = 0x%llx\n",
+		 mr->npages, addr);
+
+	pbes_in_page = mr->info.pbl_info.pbl_size / sizeof(u64);
+	pbl_table = mr->info.pbl_table + (mr->npages / pbes_in_page);
+	pbe = (struct regpair *)pbl_table->va;
+	pbe +=  mr->npages % pbes_in_page;
+	pbe->lo = cpu_to_le32((u32)addr);
+	pbe->hi = cpu_to_le32((u32)upper_32_bits(addr));
+
+	mr->npages++;
+
+	return 0;
+}
+
+static void handle_completed_mrs(struct qedr_dev *dev, struct mr_info *info)
+{
+	int work = info->completed - info->completed_handled - 1;
+
+	DP_DEBUG(dev, QEDR_MSG_MR, "Special FMR work = %d\n", work);
+	while (work-- > 0 && !list_empty(&info->inuse_pbl_list)) {
+		struct qedr_pbl *pbl;
+
+		/* Free all the page list that are possible to be freed
+		 * (all the ones that were invalidated), under the assumption
+		 * that if an FMR was completed successfully that means that
+		 * if there was an invalidate operation before it also ended
+		 */
+		pbl = list_first_entry(&info->inuse_pbl_list,
+				       struct qedr_pbl, list_entry);
+		list_del(&pbl->list_entry);
+		list_add_tail(&pbl->list_entry, &info->free_pbl_list);
+		info->completed_handled++;
+	}
+}
+
+int qedr_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
+		   int sg_nents, unsigned int *sg_offset)
+{
+	struct qedr_mr *mr = get_qedr_mr(ibmr);
+
+	mr->npages = 0;
+
+	handle_completed_mrs(mr->dev, &mr->info);
+	return ib_sg_to_pages(ibmr, sg, sg_nents, NULL, qedr_set_page);
+}
+
+struct ib_mr *qedr_get_dma_mr(struct ib_pd *ibpd, int acc)
+{
+	struct qedr_dev *dev = get_qedr_dev(ibpd->device);
+	struct qedr_pd *pd = get_qedr_pd(ibpd);
+	struct qedr_mr *mr;
+	int rc;
+
+	mr = kzalloc(sizeof(*mr), GFP_KERNEL);
+	if (!mr)
+		return ERR_PTR(-ENOMEM);
+
+	mr->type = QEDR_MR_DMA;
+
+	rc = dev->ops->rdma_alloc_tid(dev->rdma_ctx, &mr->hw_mr.itid);
+	if (rc) {
+		DP_ERR(dev, "roce alloc tid returned an error %d\n", rc);
+		goto err1;
+	}
+
+	/* index only, 18 bit long, lkey = itid << 8 | key */
+	mr->hw_mr.tid_type = QED_RDMA_TID_REGISTERED_MR;
+	mr->hw_mr.pd = pd->pd_id;
+	mr->hw_mr.local_read = 1;
+	mr->hw_mr.local_write = (acc & IB_ACCESS_LOCAL_WRITE) ? 1 : 0;
+	mr->hw_mr.remote_read = (acc & IB_ACCESS_REMOTE_READ) ? 1 : 0;
+	mr->hw_mr.remote_write = (acc & IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
+	mr->hw_mr.remote_atomic = (acc & IB_ACCESS_REMOTE_ATOMIC) ? 1 : 0;
+	mr->hw_mr.dma_mr = true;
+
+	rc = dev->ops->rdma_register_tid(dev->rdma_ctx, &mr->hw_mr);
+	if (rc) {
+		DP_ERR(dev, "roce register tid returned an error %d\n", rc);
+		goto err2;
+	}
+
+	mr->ibmr.lkey = mr->hw_mr.itid << 8 | mr->hw_mr.key;
+	if (mr->hw_mr.remote_write || mr->hw_mr.remote_read ||
+	    mr->hw_mr.remote_atomic)
+		mr->ibmr.rkey = mr->hw_mr.itid << 8 | mr->hw_mr.key;
+
+	DP_DEBUG(dev, QEDR_MSG_MR, "get dma mr: lkey = %x\n", mr->ibmr.lkey);
+	return &mr->ibmr;
+
+err2:
+	dev->ops->rdma_free_tid(dev->rdma_ctx, mr->hw_mr.itid);
+err1:
+	kfree(mr);
+	return ERR_PTR(rc);
+}
diff --git a/drivers/infiniband/hw/qedr/verbs.h b/drivers/infiniband/hw/qedr/verbs.h
index 056d6cb..ce062dc 100644
--- a/drivers/infiniband/hw/qedr/verbs.h
+++ b/drivers/infiniband/hw/qedr/verbs.h
@@ -70,4 +70,18 @@ int qedr_query_qp(struct ib_qp *, struct ib_qp_attr *qp_attr,
 		  int qp_attr_mask, struct ib_qp_init_attr *);
 int qedr_destroy_qp(struct ib_qp *ibqp);
 
+struct ib_ah *qedr_create_ah(struct ib_pd *ibpd, struct ib_ah_attr *attr);
+int qedr_destroy_ah(struct ib_ah *ibah);
+
+int qedr_dereg_mr(struct ib_mr *);
+struct ib_mr *qedr_get_dma_mr(struct ib_pd *, int acc);
+
+struct ib_mr *qedr_reg_user_mr(struct ib_pd *, u64 start, u64 length,
+			       u64 virt, int acc, struct ib_udata *);
+
+int qedr_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
+		   int sg_nents, unsigned int *sg_offset);
+
+struct ib_mr *qedr_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
+			    u32 max_num_sg);
 #endif
-- 
1.8.3.1

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[PATCH qedr 07/10] qedr: Add support for data path

[Ram Amrani]

Implement fastpath verbs like ib_send_post, ib_post_recv and ib_poll_cq.

Signed-off-by: Rajesh Borundia <rajesh.borundia-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
Signed-off-by: Ram Amrani <Ram.Amrani-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
---
 drivers/infiniband/hw/qedr/main.c          |    9 +-
 drivers/infiniband/hw/qedr/qedr.h          |   19 +
 drivers/infiniband/hw/qedr/qedr_hsi_rdma.h |  562 +++++++++++++++
 drivers/infiniband/hw/qedr/verbs.c         | 1020 ++++++++++++++++++++++++++++
 drivers/infiniband/hw/qedr/verbs.h         |    5 +
 5 files changed, 1614 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/qedr/main.c b/drivers/infiniband/hw/qedr/main.c
index 613cc4d..86c23d2 100644
--- a/drivers/infiniband/hw/qedr/main.c
+++ b/drivers/infiniband/hw/qedr/main.c
@@ -102,7 +102,10 @@ static int qedr_register_device(struct qedr_dev *dev)
 				     QEDR_UVERBS(QUERY_QP) |
 				     QEDR_UVERBS(DESTROY_QP) |
 				     QEDR_UVERBS(REG_MR) |
-				     QEDR_UVERBS(DEREG_MR);
+				     QEDR_UVERBS(DEREG_MR) |
+				     QEDR_UVERBS(POLL_CQ) |
+				     QEDR_UVERBS(POST_SEND) |
+				     QEDR_UVERBS(POST_RECV);
 
 	dev->ibdev.phys_port_cnt = 1;
 	dev->ibdev.num_comp_vectors = dev->num_cnq;
@@ -141,6 +144,10 @@ static int qedr_register_device(struct qedr_dev *dev)
 	dev->ibdev.alloc_mr = qedr_alloc_mr;
 	dev->ibdev.map_mr_sg = qedr_map_mr_sg;
 
+	dev->ibdev.poll_cq = qedr_poll_cq;
+	dev->ibdev.post_send = qedr_post_send;
+	dev->ibdev.post_recv = qedr_post_recv;
+
 	dev->ibdev.dma_device = &dev->pdev->dev;
 
 	dev->ibdev.get_link_layer = qedr_link_layer;
diff --git a/drivers/infiniband/hw/qedr/qedr.h b/drivers/infiniband/hw/qedr/qedr.h
index fe6b829..a623663 100644
--- a/drivers/infiniband/hw/qedr/qedr.h
+++ b/drivers/infiniband/hw/qedr/qedr.h
@@ -410,6 +410,25 @@ struct qedr_mr {
 	u32 npages;
 };
 
+#define SET_FIELD2(value, name, flag) ((value) |= ((flag) << (name ## _SHIFT)))
+
+#define QEDR_RESP_IMM	(RDMA_CQE_RESPONDER_IMM_FLG_MASK << \
+			 RDMA_CQE_RESPONDER_IMM_FLG_SHIFT)
+#define QEDR_RESP_RDMA	(RDMA_CQE_RESPONDER_RDMA_FLG_MASK << \
+			 RDMA_CQE_RESPONDER_RDMA_FLG_SHIFT)
+#define QEDR_RESP_RDMA_IMM (QEDR_RESP_IMM | QEDR_RESP_RDMA)
+
+static inline void qedr_inc_sw_cons(struct qedr_qp_hwq_info *info)
+{
+	info->cons = (info->cons + 1) % info->max_wr;
+	info->wqe_cons++;
+}
+
+static inline void qedr_inc_sw_prod(struct qedr_qp_hwq_info *info)
+{
+	info->prod = (info->prod + 1) % info->max_wr;
+}
+
 static inline int qedr_get_dmac(struct qedr_dev *dev,
 				struct ib_ah_attr *ah_attr, u8 *mac_addr)
 {
diff --git a/drivers/infiniband/hw/qedr/qedr_hsi_rdma.h b/drivers/infiniband/hw/qedr/qedr_hsi_rdma.h
index 4770559..5c98d20 100644
--- a/drivers/infiniband/hw/qedr/qedr_hsi_rdma.h
+++ b/drivers/infiniband/hw/qedr/qedr_hsi_rdma.h
@@ -150,6 +150,12 @@ struct rdma_rq_sge {
 	struct regpair addr;
 	__le32 length;
 	__le32 flags;
+#define RDMA_RQ_SGE_L_KEY_MASK      0x3FFFFFF
+#define RDMA_RQ_SGE_L_KEY_SHIFT     0
+#define RDMA_RQ_SGE_NUM_SGES_MASK   0x7
+#define RDMA_RQ_SGE_NUM_SGES_SHIFT  26
+#define RDMA_RQ_SGE_RESERVED0_MASK  0x7
+#define RDMA_RQ_SGE_RESERVED0_SHIFT 29
 };
 
 struct rdma_srq_sge {
@@ -183,4 +189,560 @@ struct rdma_pwm_val32_data {
 	__le32 value;
 };
 
+/* DIF Block size options */
+enum rdma_dif_block_size {
+	RDMA_DIF_BLOCK_512 = 0,
+	RDMA_DIF_BLOCK_4096 = 1,
+	MAX_RDMA_DIF_BLOCK_SIZE
+};
+
+/* DIF CRC initial value */
+enum rdma_dif_crc_seed {
+	RDMA_DIF_CRC_SEED_0000 = 0,
+	RDMA_DIF_CRC_SEED_FFFF = 1,
+	MAX_RDMA_DIF_CRC_SEED
+};
+
+/* RDMA DIF Error Result Structure */
+struct rdma_dif_error_result {
+	__le32 error_intervals;
+	__le32 dif_error_1st_interval;
+	u8 flags;
+#define RDMA_DIF_ERROR_RESULT_DIF_ERROR_TYPE_CRC_MASK      0x1
+#define RDMA_DIF_ERROR_RESULT_DIF_ERROR_TYPE_CRC_SHIFT     0
+#define RDMA_DIF_ERROR_RESULT_DIF_ERROR_TYPE_APP_TAG_MASK  0x1
+#define RDMA_DIF_ERROR_RESULT_DIF_ERROR_TYPE_APP_TAG_SHIFT 1
+#define RDMA_DIF_ERROR_RESULT_DIF_ERROR_TYPE_REF_TAG_MASK  0x1
+#define RDMA_DIF_ERROR_RESULT_DIF_ERROR_TYPE_REF_TAG_SHIFT 2
+#define RDMA_DIF_ERROR_RESULT_RESERVED0_MASK               0xF
+#define RDMA_DIF_ERROR_RESULT_RESERVED0_SHIFT              3
+#define RDMA_DIF_ERROR_RESULT_TOGGLE_BIT_MASK              0x1
+#define RDMA_DIF_ERROR_RESULT_TOGGLE_BIT_SHIFT             7
+	u8 reserved1[55];
+};
+
+/* DIF IO direction */
+enum rdma_dif_io_direction_flg {
+	RDMA_DIF_DIR_RX = 0,
+	RDMA_DIF_DIR_TX = 1,
+	MAX_RDMA_DIF_IO_DIRECTION_FLG
+};
+
+/* RDMA DIF Runt Result Structure */
+struct rdma_dif_runt_result {
+	__le16 guard_tag;
+	__le16 reserved[3];
+};
+
+/* Memory window type enumeration */
+enum rdma_mw_type {
+	RDMA_MW_TYPE_1,
+	RDMA_MW_TYPE_2A,
+	MAX_RDMA_MW_TYPE
+};
+
+struct rdma_sq_atomic_wqe {
+	__le32 reserved1;
+	__le32 length;
+	__le32 xrc_srq;
+	u8 req_type;
+	u8 flags;
+#define RDMA_SQ_ATOMIC_WQE_COMP_FLG_MASK         0x1
+#define RDMA_SQ_ATOMIC_WQE_COMP_FLG_SHIFT        0
+#define RDMA_SQ_ATOMIC_WQE_RD_FENCE_FLG_MASK     0x1
+#define RDMA_SQ_ATOMIC_WQE_RD_FENCE_FLG_SHIFT    1
+#define RDMA_SQ_ATOMIC_WQE_INV_FENCE_FLG_MASK    0x1
+#define RDMA_SQ_ATOMIC_WQE_INV_FENCE_FLG_SHIFT   2
+#define RDMA_SQ_ATOMIC_WQE_SE_FLG_MASK           0x1
+#define RDMA_SQ_ATOMIC_WQE_SE_FLG_SHIFT          3
+#define RDMA_SQ_ATOMIC_WQE_INLINE_FLG_MASK       0x1
+#define RDMA_SQ_ATOMIC_WQE_INLINE_FLG_SHIFT      4
+#define RDMA_SQ_ATOMIC_WQE_DIF_ON_HOST_FLG_MASK  0x1
+#define RDMA_SQ_ATOMIC_WQE_DIF_ON_HOST_FLG_SHIFT 5
+#define RDMA_SQ_ATOMIC_WQE_RESERVED0_MASK        0x3
+#define RDMA_SQ_ATOMIC_WQE_RESERVED0_SHIFT       6
+	u8 wqe_size;
+	u8 prev_wqe_size;
+	struct regpair remote_va;
+	__le32 r_key;
+	__le32 reserved2;
+	struct regpair cmp_data;
+	struct regpair swap_data;
+};
+
+/* First element (16 bytes) of atomic wqe */
+struct rdma_sq_atomic_wqe_1st {
+	__le32 reserved1;
+	__le32 length;
+	__le32 xrc_srq;
+	u8 req_type;
+	u8 flags;
+#define RDMA_SQ_ATOMIC_WQE_1ST_COMP_FLG_MASK       0x1
+#define RDMA_SQ_ATOMIC_WQE_1ST_COMP_FLG_SHIFT      0
+#define RDMA_SQ_ATOMIC_WQE_1ST_RD_FENCE_FLG_MASK   0x1
+#define RDMA_SQ_ATOMIC_WQE_1ST_RD_FENCE_FLG_SHIFT  1
+#define RDMA_SQ_ATOMIC_WQE_1ST_INV_FENCE_FLG_MASK  0x1
+#define RDMA_SQ_ATOMIC_WQE_1ST_INV_FENCE_FLG_SHIFT 2
+#define RDMA_SQ_ATOMIC_WQE_1ST_SE_FLG_MASK         0x1
+#define RDMA_SQ_ATOMIC_WQE_1ST_SE_FLG_SHIFT        3
+#define RDMA_SQ_ATOMIC_WQE_1ST_INLINE_FLG_MASK     0x1
+#define RDMA_SQ_ATOMIC_WQE_1ST_INLINE_FLG_SHIFT    4
+#define RDMA_SQ_ATOMIC_WQE_1ST_RESERVED0_MASK      0x7
+#define RDMA_SQ_ATOMIC_WQE_1ST_RESERVED0_SHIFT     5
+	u8 wqe_size;
+	u8 prev_wqe_size;
+};
+
+/* Second element (16 bytes) of atomic wqe */
+struct rdma_sq_atomic_wqe_2nd {
+	struct regpair remote_va;
+	__le32 r_key;
+	__le32 reserved2;
+};
+
+/* Third element (16 bytes) of atomic wqe */
+struct rdma_sq_atomic_wqe_3rd {
+	struct regpair cmp_data;
+	struct regpair swap_data;
+};
+
+struct rdma_sq_bind_wqe {
+	struct regpair addr;
+	__le32 l_key;
+	u8 req_type;
+	u8 flags;
+#define RDMA_SQ_BIND_WQE_COMP_FLG_MASK       0x1
+#define RDMA_SQ_BIND_WQE_COMP_FLG_SHIFT      0
+#define RDMA_SQ_BIND_WQE_RD_FENCE_FLG_MASK   0x1
+#define RDMA_SQ_BIND_WQE_RD_FENCE_FLG_SHIFT  1
+#define RDMA_SQ_BIND_WQE_INV_FENCE_FLG_MASK  0x1
+#define RDMA_SQ_BIND_WQE_INV_FENCE_FLG_SHIFT 2
+#define RDMA_SQ_BIND_WQE_SE_FLG_MASK         0x1
+#define RDMA_SQ_BIND_WQE_SE_FLG_SHIFT        3
+#define RDMA_SQ_BIND_WQE_INLINE_FLG_MASK     0x1
+#define RDMA_SQ_BIND_WQE_INLINE_FLG_SHIFT    4
+#define RDMA_SQ_BIND_WQE_RESERVED0_MASK      0x7
+#define RDMA_SQ_BIND_WQE_RESERVED0_SHIFT     5
+	u8 wqe_size;
+	u8 prev_wqe_size;
+	u8 bind_ctrl;
+#define RDMA_SQ_BIND_WQE_ZERO_BASED_MASK     0x1
+#define RDMA_SQ_BIND_WQE_ZERO_BASED_SHIFT    0
+#define RDMA_SQ_BIND_WQE_MW_TYPE_MASK        0x1
+#define RDMA_SQ_BIND_WQE_MW_TYPE_SHIFT       1
+#define RDMA_SQ_BIND_WQE_RESERVED1_MASK      0x3F
+#define RDMA_SQ_BIND_WQE_RESERVED1_SHIFT     2
+	u8 access_ctrl;
+#define RDMA_SQ_BIND_WQE_REMOTE_READ_MASK    0x1
+#define RDMA_SQ_BIND_WQE_REMOTE_READ_SHIFT   0
+#define RDMA_SQ_BIND_WQE_REMOTE_WRITE_MASK   0x1
+#define RDMA_SQ_BIND_WQE_REMOTE_WRITE_SHIFT  1
+#define RDMA_SQ_BIND_WQE_ENABLE_ATOMIC_MASK  0x1
+#define RDMA_SQ_BIND_WQE_ENABLE_ATOMIC_SHIFT 2
+#define RDMA_SQ_BIND_WQE_LOCAL_READ_MASK     0x1
+#define RDMA_SQ_BIND_WQE_LOCAL_READ_SHIFT    3
+#define RDMA_SQ_BIND_WQE_LOCAL_WRITE_MASK    0x1
+#define RDMA_SQ_BIND_WQE_LOCAL_WRITE_SHIFT   4
+#define RDMA_SQ_BIND_WQE_RESERVED2_MASK      0x7
+#define RDMA_SQ_BIND_WQE_RESERVED2_SHIFT     5
+	u8 reserved3;
+	u8 length_hi;
+	__le32 length_lo;
+	__le32 parent_l_key;
+	__le32 reserved4;
+};
+
+/* First element (16 bytes) of bind wqe */
+struct rdma_sq_bind_wqe_1st {
+	struct regpair addr;
+	__le32 l_key;
+	u8 req_type;
+	u8 flags;
+#define RDMA_SQ_BIND_WQE_1ST_COMP_FLG_MASK       0x1
+#define RDMA_SQ_BIND_WQE_1ST_COMP_FLG_SHIFT      0
+#define RDMA_SQ_BIND_WQE_1ST_RD_FENCE_FLG_MASK   0x1
+#define RDMA_SQ_BIND_WQE_1ST_RD_FENCE_FLG_SHIFT  1
+#define RDMA_SQ_BIND_WQE_1ST_INV_FENCE_FLG_MASK  0x1
+#define RDMA_SQ_BIND_WQE_1ST_INV_FENCE_FLG_SHIFT 2
+#define RDMA_SQ_BIND_WQE_1ST_SE_FLG_MASK         0x1
+#define RDMA_SQ_BIND_WQE_1ST_SE_FLG_SHIFT        3
+#define RDMA_SQ_BIND_WQE_1ST_INLINE_FLG_MASK     0x1
+#define RDMA_SQ_BIND_WQE_1ST_INLINE_FLG_SHIFT    4
+#define RDMA_SQ_BIND_WQE_1ST_RESERVED0_MASK      0x7
+#define RDMA_SQ_BIND_WQE_1ST_RESERVED0_SHIFT     5
+	u8 wqe_size;
+	u8 prev_wqe_size;
+};
+
+/* Second element (16 bytes) of bind wqe */
+struct rdma_sq_bind_wqe_2nd {
+	u8 bind_ctrl;
+#define RDMA_SQ_BIND_WQE_2ND_ZERO_BASED_MASK     0x1
+#define RDMA_SQ_BIND_WQE_2ND_ZERO_BASED_SHIFT    0
+#define RDMA_SQ_BIND_WQE_2ND_MW_TYPE_MASK        0x1
+#define RDMA_SQ_BIND_WQE_2ND_MW_TYPE_SHIFT       1
+#define RDMA_SQ_BIND_WQE_2ND_RESERVED1_MASK      0x3F
+#define RDMA_SQ_BIND_WQE_2ND_RESERVED1_SHIFT     2
+	u8 access_ctrl;
+#define RDMA_SQ_BIND_WQE_2ND_REMOTE_READ_MASK    0x1
+#define RDMA_SQ_BIND_WQE_2ND_REMOTE_READ_SHIFT   0
+#define RDMA_SQ_BIND_WQE_2ND_REMOTE_WRITE_MASK   0x1
+#define RDMA_SQ_BIND_WQE_2ND_REMOTE_WRITE_SHIFT  1
+#define RDMA_SQ_BIND_WQE_2ND_ENABLE_ATOMIC_MASK  0x1
+#define RDMA_SQ_BIND_WQE_2ND_ENABLE_ATOMIC_SHIFT 2
+#define RDMA_SQ_BIND_WQE_2ND_LOCAL_READ_MASK     0x1
+#define RDMA_SQ_BIND_WQE_2ND_LOCAL_READ_SHIFT    3
+#define RDMA_SQ_BIND_WQE_2ND_LOCAL_WRITE_MASK    0x1
+#define RDMA_SQ_BIND_WQE_2ND_LOCAL_WRITE_SHIFT   4
+#define RDMA_SQ_BIND_WQE_2ND_RESERVED2_MASK      0x7
+#define RDMA_SQ_BIND_WQE_2ND_RESERVED2_SHIFT     5
+	u8 reserved3;
+	u8 length_hi;
+	__le32 length_lo;
+	__le32 parent_l_key;
+	__le32 reserved4;
+};
+
+/* Structure with only the SQ WQE common
+ * fields. Size is of one SQ element (16B)
+ */
+struct rdma_sq_common_wqe {
+	__le32 reserved1[3];
+	u8 req_type;
+	u8 flags;
+#define RDMA_SQ_COMMON_WQE_COMP_FLG_MASK       0x1
+#define RDMA_SQ_COMMON_WQE_COMP_FLG_SHIFT      0
+#define RDMA_SQ_COMMON_WQE_RD_FENCE_FLG_MASK   0x1
+#define RDMA_SQ_COMMON_WQE_RD_FENCE_FLG_SHIFT  1
+#define RDMA_SQ_COMMON_WQE_INV_FENCE_FLG_MASK  0x1
+#define RDMA_SQ_COMMON_WQE_INV_FENCE_FLG_SHIFT 2
+#define RDMA_SQ_COMMON_WQE_SE_FLG_MASK         0x1
+#define RDMA_SQ_COMMON_WQE_SE_FLG_SHIFT        3
+#define RDMA_SQ_COMMON_WQE_INLINE_FLG_MASK     0x1
+#define RDMA_SQ_COMMON_WQE_INLINE_FLG_SHIFT    4
+#define RDMA_SQ_COMMON_WQE_RESERVED0_MASK      0x7
+#define RDMA_SQ_COMMON_WQE_RESERVED0_SHIFT     5
+	u8 wqe_size;
+	u8 prev_wqe_size;
+};
+
+struct rdma_sq_fmr_wqe {
+	struct regpair addr;
+	__le32 l_key;
+	u8 req_type;
+	u8 flags;
+#define RDMA_SQ_FMR_WQE_COMP_FLG_MASK                0x1
+#define RDMA_SQ_FMR_WQE_COMP_FLG_SHIFT               0
+#define RDMA_SQ_FMR_WQE_RD_FENCE_FLG_MASK            0x1
+#define RDMA_SQ_FMR_WQE_RD_FENCE_FLG_SHIFT           1
+#define RDMA_SQ_FMR_WQE_INV_FENCE_FLG_MASK           0x1
+#define RDMA_SQ_FMR_WQE_INV_FENCE_FLG_SHIFT          2
+#define RDMA_SQ_FMR_WQE_SE_FLG_MASK                  0x1
+#define RDMA_SQ_FMR_WQE_SE_FLG_SHIFT                 3
+#define RDMA_SQ_FMR_WQE_INLINE_FLG_MASK              0x1
+#define RDMA_SQ_FMR_WQE_INLINE_FLG_SHIFT             4
+#define RDMA_SQ_FMR_WQE_DIF_ON_HOST_FLG_MASK         0x1
+#define RDMA_SQ_FMR_WQE_DIF_ON_HOST_FLG_SHIFT        5
+#define RDMA_SQ_FMR_WQE_RESERVED0_MASK               0x3
+#define RDMA_SQ_FMR_WQE_RESERVED0_SHIFT              6
+	u8 wqe_size;
+	u8 prev_wqe_size;
+	u8 fmr_ctrl;
+#define RDMA_SQ_FMR_WQE_PAGE_SIZE_LOG_MASK           0x1F
+#define RDMA_SQ_FMR_WQE_PAGE_SIZE_LOG_SHIFT          0
+#define RDMA_SQ_FMR_WQE_ZERO_BASED_MASK              0x1
+#define RDMA_SQ_FMR_WQE_ZERO_BASED_SHIFT             5
+#define RDMA_SQ_FMR_WQE_BIND_EN_MASK                 0x1
+#define RDMA_SQ_FMR_WQE_BIND_EN_SHIFT                6
+#define RDMA_SQ_FMR_WQE_RESERVED1_MASK               0x1
+#define RDMA_SQ_FMR_WQE_RESERVED1_SHIFT              7
+	u8 access_ctrl;
+#define RDMA_SQ_FMR_WQE_REMOTE_READ_MASK             0x1
+#define RDMA_SQ_FMR_WQE_REMOTE_READ_SHIFT            0
+#define RDMA_SQ_FMR_WQE_REMOTE_WRITE_MASK            0x1
+#define RDMA_SQ_FMR_WQE_REMOTE_WRITE_SHIFT           1
+#define RDMA_SQ_FMR_WQE_ENABLE_ATOMIC_MASK           0x1
+#define RDMA_SQ_FMR_WQE_ENABLE_ATOMIC_SHIFT          2
+#define RDMA_SQ_FMR_WQE_LOCAL_READ_MASK              0x1
+#define RDMA_SQ_FMR_WQE_LOCAL_READ_SHIFT             3
+#define RDMA_SQ_FMR_WQE_LOCAL_WRITE_MASK             0x1
+#define RDMA_SQ_FMR_WQE_LOCAL_WRITE_SHIFT            4
+#define RDMA_SQ_FMR_WQE_RESERVED2_MASK               0x7
+#define RDMA_SQ_FMR_WQE_RESERVED2_SHIFT              5
+	u8 reserved3;
+	u8 length_hi;
+	__le32 length_lo;
+	struct regpair pbl_addr;
+	__le32 dif_base_ref_tag;
+	__le16 dif_app_tag;
+	__le16 dif_app_tag_mask;
+	__le16 dif_runt_crc_value;
+	__le16 dif_flags;
+#define RDMA_SQ_FMR_WQE_DIF_IO_DIRECTION_FLG_MASK    0x1
+#define RDMA_SQ_FMR_WQE_DIF_IO_DIRECTION_FLG_SHIFT   0
+#define RDMA_SQ_FMR_WQE_DIF_BLOCK_SIZE_MASK          0x1
+#define RDMA_SQ_FMR_WQE_DIF_BLOCK_SIZE_SHIFT         1
+#define RDMA_SQ_FMR_WQE_DIF_RUNT_VALID_FLG_MASK      0x1
+#define RDMA_SQ_FMR_WQE_DIF_RUNT_VALID_FLG_SHIFT     2
+#define RDMA_SQ_FMR_WQE_DIF_VALIDATE_CRC_GUARD_MASK  0x1
+#define RDMA_SQ_FMR_WQE_DIF_VALIDATE_CRC_GUARD_SHIFT 3
+#define RDMA_SQ_FMR_WQE_DIF_VALIDATE_REF_TAG_MASK    0x1
+#define RDMA_SQ_FMR_WQE_DIF_VALIDATE_REF_TAG_SHIFT   4
+#define RDMA_SQ_FMR_WQE_DIF_VALIDATE_APP_TAG_MASK    0x1
+#define RDMA_SQ_FMR_WQE_DIF_VALIDATE_APP_TAG_SHIFT   5
+#define RDMA_SQ_FMR_WQE_DIF_CRC_SEED_MASK            0x1
+#define RDMA_SQ_FMR_WQE_DIF_CRC_SEED_SHIFT           6
+#define RDMA_SQ_FMR_WQE_RESERVED4_MASK               0x1FF
+#define RDMA_SQ_FMR_WQE_RESERVED4_SHIFT              7
+	__le32 Reserved5;
+};
+
+/* First element (16 bytes) of fmr wqe */
+struct rdma_sq_fmr_wqe_1st {
+	struct regpair addr;
+	__le32 l_key;
+	u8 req_type;
+	u8 flags;
+#define RDMA_SQ_FMR_WQE_1ST_COMP_FLG_MASK         0x1
+#define RDMA_SQ_FMR_WQE_1ST_COMP_FLG_SHIFT        0
+#define RDMA_SQ_FMR_WQE_1ST_RD_FENCE_FLG_MASK     0x1
+#define RDMA_SQ_FMR_WQE_1ST_RD_FENCE_FLG_SHIFT    1
+#define RDMA_SQ_FMR_WQE_1ST_INV_FENCE_FLG_MASK    0x1
+#define RDMA_SQ_FMR_WQE_1ST_INV_FENCE_FLG_SHIFT   2
+#define RDMA_SQ_FMR_WQE_1ST_SE_FLG_MASK           0x1
+#define RDMA_SQ_FMR_WQE_1ST_SE_FLG_SHIFT          3
+#define RDMA_SQ_FMR_WQE_1ST_INLINE_FLG_MASK       0x1
+#define RDMA_SQ_FMR_WQE_1ST_INLINE_FLG_SHIFT      4
+#define RDMA_SQ_FMR_WQE_1ST_DIF_ON_HOST_FLG_MASK  0x1
+#define RDMA_SQ_FMR_WQE_1ST_DIF_ON_HOST_FLG_SHIFT 5
+#define RDMA_SQ_FMR_WQE_1ST_RESERVED0_MASK        0x3
+#define RDMA_SQ_FMR_WQE_1ST_RESERVED0_SHIFT       6
+	u8 wqe_size;
+	u8 prev_wqe_size;
+};
+
+/* Second element (16 bytes) of fmr wqe */
+struct rdma_sq_fmr_wqe_2nd {
+	u8 fmr_ctrl;
+#define RDMA_SQ_FMR_WQE_2ND_PAGE_SIZE_LOG_MASK  0x1F
+#define RDMA_SQ_FMR_WQE_2ND_PAGE_SIZE_LOG_SHIFT 0
+#define RDMA_SQ_FMR_WQE_2ND_ZERO_BASED_MASK     0x1
+#define RDMA_SQ_FMR_WQE_2ND_ZERO_BASED_SHIFT    5
+#define RDMA_SQ_FMR_WQE_2ND_BIND_EN_MASK        0x1
+#define RDMA_SQ_FMR_WQE_2ND_BIND_EN_SHIFT       6
+#define RDMA_SQ_FMR_WQE_2ND_RESERVED1_MASK      0x1
+#define RDMA_SQ_FMR_WQE_2ND_RESERVED1_SHIFT     7
+	u8 access_ctrl;
+#define RDMA_SQ_FMR_WQE_2ND_REMOTE_READ_MASK    0x1
+#define RDMA_SQ_FMR_WQE_2ND_REMOTE_READ_SHIFT   0
+#define RDMA_SQ_FMR_WQE_2ND_REMOTE_WRITE_MASK   0x1
+#define RDMA_SQ_FMR_WQE_2ND_REMOTE_WRITE_SHIFT  1
+#define RDMA_SQ_FMR_WQE_2ND_ENABLE_ATOMIC_MASK  0x1
+#define RDMA_SQ_FMR_WQE_2ND_ENABLE_ATOMIC_SHIFT 2
+#define RDMA_SQ_FMR_WQE_2ND_LOCAL_READ_MASK     0x1
+#define RDMA_SQ_FMR_WQE_2ND_LOCAL_READ_SHIFT    3
+#define RDMA_SQ_FMR_WQE_2ND_LOCAL_WRITE_MASK    0x1
+#define RDMA_SQ_FMR_WQE_2ND_LOCAL_WRITE_SHIFT   4
+#define RDMA_SQ_FMR_WQE_2ND_RESERVED2_MASK      0x7
+#define RDMA_SQ_FMR_WQE_2ND_RESERVED2_SHIFT     5
+	u8 reserved3;
+	u8 length_hi;
+	__le32 length_lo;
+	struct regpair pbl_addr;
+};
+
+/* Third element (16 bytes) of fmr wqe */
+struct rdma_sq_fmr_wqe_3rd {
+	__le32 dif_base_ref_tag;
+	__le16 dif_app_tag;
+	__le16 dif_app_tag_mask;
+	__le16 dif_runt_crc_value;
+	__le16 dif_flags;
+#define RDMA_SQ_FMR_WQE_3RD_DIF_IO_DIRECTION_FLG_MASK    0x1
+#define RDMA_SQ_FMR_WQE_3RD_DIF_IO_DIRECTION_FLG_SHIFT   0
+#define RDMA_SQ_FMR_WQE_3RD_DIF_BLOCK_SIZE_MASK          0x1
+#define RDMA_SQ_FMR_WQE_3RD_DIF_BLOCK_SIZE_SHIFT         1
+#define RDMA_SQ_FMR_WQE_3RD_DIF_RUNT_VALID_FLG_MASK      0x1
+#define RDMA_SQ_FMR_WQE_3RD_DIF_RUNT_VALID_FLG_SHIFT     2
+#define RDMA_SQ_FMR_WQE_3RD_DIF_VALIDATE_CRC_GUARD_MASK  0x1
+#define RDMA_SQ_FMR_WQE_3RD_DIF_VALIDATE_CRC_GUARD_SHIFT 3
+#define RDMA_SQ_FMR_WQE_3RD_DIF_VALIDATE_REF_TAG_MASK    0x1
+#define RDMA_SQ_FMR_WQE_3RD_DIF_VALIDATE_REF_TAG_SHIFT   4
+#define RDMA_SQ_FMR_WQE_3RD_DIF_VALIDATE_APP_TAG_MASK    0x1
+#define RDMA_SQ_FMR_WQE_3RD_DIF_VALIDATE_APP_TAG_SHIFT   5
+#define RDMA_SQ_FMR_WQE_3RD_DIF_CRC_SEED_MASK            0x1
+#define RDMA_SQ_FMR_WQE_3RD_DIF_CRC_SEED_SHIFT           6
+#define RDMA_SQ_FMR_WQE_3RD_RESERVED4_MASK               0x1FF
+#define RDMA_SQ_FMR_WQE_3RD_RESERVED4_SHIFT              7
+	__le32 Reserved5;
+};
+
+struct rdma_sq_local_inv_wqe {
+	struct regpair reserved;
+	__le32 inv_l_key;
+	u8 req_type;
+	u8 flags;
+#define RDMA_SQ_LOCAL_INV_WQE_COMP_FLG_MASK         0x1
+#define RDMA_SQ_LOCAL_INV_WQE_COMP_FLG_SHIFT        0
+#define RDMA_SQ_LOCAL_INV_WQE_RD_FENCE_FLG_MASK     0x1
+#define RDMA_SQ_LOCAL_INV_WQE_RD_FENCE_FLG_SHIFT    1
+#define RDMA_SQ_LOCAL_INV_WQE_INV_FENCE_FLG_MASK    0x1
+#define RDMA_SQ_LOCAL_INV_WQE_INV_FENCE_FLG_SHIFT   2
+#define RDMA_SQ_LOCAL_INV_WQE_SE_FLG_MASK           0x1
+#define RDMA_SQ_LOCAL_INV_WQE_SE_FLG_SHIFT          3
+#define RDMA_SQ_LOCAL_INV_WQE_INLINE_FLG_MASK       0x1
+#define RDMA_SQ_LOCAL_INV_WQE_INLINE_FLG_SHIFT      4
+#define RDMA_SQ_LOCAL_INV_WQE_DIF_ON_HOST_FLG_MASK  0x1
+#define RDMA_SQ_LOCAL_INV_WQE_DIF_ON_HOST_FLG_SHIFT 5
+#define RDMA_SQ_LOCAL_INV_WQE_RESERVED0_MASK        0x3
+#define RDMA_SQ_LOCAL_INV_WQE_RESERVED0_SHIFT       6
+	u8 wqe_size;
+	u8 prev_wqe_size;
+};
+
+struct rdma_sq_rdma_wqe {
+	__le32 imm_data;
+	__le32 length;
+	__le32 xrc_srq;
+	u8 req_type;
+	u8 flags;
+#define RDMA_SQ_RDMA_WQE_COMP_FLG_MASK                  0x1
+#define RDMA_SQ_RDMA_WQE_COMP_FLG_SHIFT                 0
+#define RDMA_SQ_RDMA_WQE_RD_FENCE_FLG_MASK              0x1
+#define RDMA_SQ_RDMA_WQE_RD_FENCE_FLG_SHIFT             1
+#define RDMA_SQ_RDMA_WQE_INV_FENCE_FLG_MASK             0x1
+#define RDMA_SQ_RDMA_WQE_INV_FENCE_FLG_SHIFT            2
+#define RDMA_SQ_RDMA_WQE_SE_FLG_MASK                    0x1
+#define RDMA_SQ_RDMA_WQE_SE_FLG_SHIFT                   3
+#define RDMA_SQ_RDMA_WQE_INLINE_FLG_MASK                0x1
+#define RDMA_SQ_RDMA_WQE_INLINE_FLG_SHIFT               4
+#define RDMA_SQ_RDMA_WQE_DIF_ON_HOST_FLG_MASK           0x1
+#define RDMA_SQ_RDMA_WQE_DIF_ON_HOST_FLG_SHIFT          5
+#define RDMA_SQ_RDMA_WQE_RESERVED0_MASK                 0x3
+#define RDMA_SQ_RDMA_WQE_RESERVED0_SHIFT                6
+	u8 wqe_size;
+	u8 prev_wqe_size;
+	struct regpair remote_va;
+	__le32 r_key;
+	u8 dif_flags;
+#define RDMA_SQ_RDMA_WQE_DIF_BLOCK_SIZE_MASK            0x1
+#define RDMA_SQ_RDMA_WQE_DIF_BLOCK_SIZE_SHIFT           0
+#define RDMA_SQ_RDMA_WQE_DIF_FIRST_RDMA_IN_IO_FLG_MASK  0x1
+#define RDMA_SQ_RDMA_WQE_DIF_FIRST_RDMA_IN_IO_FLG_SHIFT 1
+#define RDMA_SQ_RDMA_WQE_DIF_LAST_RDMA_IN_IO_FLG_MASK   0x1
+#define RDMA_SQ_RDMA_WQE_DIF_LAST_RDMA_IN_IO_FLG_SHIFT  2
+#define RDMA_SQ_RDMA_WQE_RESERVED1_MASK                 0x1F
+#define RDMA_SQ_RDMA_WQE_RESERVED1_SHIFT                3
+	u8 reserved2[3];
+};
+
+/* First element (16 bytes) of rdma wqe */
+struct rdma_sq_rdma_wqe_1st {
+	__le32 imm_data;
+	__le32 length;
+	__le32 xrc_srq;
+	u8 req_type;
+	u8 flags;
+#define RDMA_SQ_RDMA_WQE_1ST_COMP_FLG_MASK         0x1
+#define RDMA_SQ_RDMA_WQE_1ST_COMP_FLG_SHIFT        0
+#define RDMA_SQ_RDMA_WQE_1ST_RD_FENCE_FLG_MASK     0x1
+#define RDMA_SQ_RDMA_WQE_1ST_RD_FENCE_FLG_SHIFT    1
+#define RDMA_SQ_RDMA_WQE_1ST_INV_FENCE_FLG_MASK    0x1
+#define RDMA_SQ_RDMA_WQE_1ST_INV_FENCE_FLG_SHIFT   2
+#define RDMA_SQ_RDMA_WQE_1ST_SE_FLG_MASK           0x1
+#define RDMA_SQ_RDMA_WQE_1ST_SE_FLG_SHIFT          3
+#define RDMA_SQ_RDMA_WQE_1ST_INLINE_FLG_MASK       0x1
+#define RDMA_SQ_RDMA_WQE_1ST_INLINE_FLG_SHIFT      4
+#define RDMA_SQ_RDMA_WQE_1ST_DIF_ON_HOST_FLG_MASK  0x1
+#define RDMA_SQ_RDMA_WQE_1ST_DIF_ON_HOST_FLG_SHIFT 5
+#define RDMA_SQ_RDMA_WQE_1ST_RESERVED0_MASK        0x3
+#define RDMA_SQ_RDMA_WQE_1ST_RESERVED0_SHIFT       6
+	u8 wqe_size;
+	u8 prev_wqe_size;
+};
+
+/* Second element (16 bytes) of rdma wqe */
+struct rdma_sq_rdma_wqe_2nd {
+	struct regpair remote_va;
+	__le32 r_key;
+	u8 dif_flags;
+#define RDMA_SQ_RDMA_WQE_2ND_DIF_BLOCK_SIZE_MASK         0x1
+#define RDMA_SQ_RDMA_WQE_2ND_DIF_BLOCK_SIZE_SHIFT        0
+#define RDMA_SQ_RDMA_WQE_2ND_DIF_FIRST_SEGMENT_FLG_MASK  0x1
+#define RDMA_SQ_RDMA_WQE_2ND_DIF_FIRST_SEGMENT_FLG_SHIFT 1
+#define RDMA_SQ_RDMA_WQE_2ND_DIF_LAST_SEGMENT_FLG_MASK   0x1
+#define RDMA_SQ_RDMA_WQE_2ND_DIF_LAST_SEGMENT_FLG_SHIFT  2
+#define RDMA_SQ_RDMA_WQE_2ND_RESERVED1_MASK              0x1F
+#define RDMA_SQ_RDMA_WQE_2ND_RESERVED1_SHIFT             3
+	u8 reserved2[3];
+};
+
+/* SQ WQE req type enumeration */
+enum rdma_sq_req_type {
+	RDMA_SQ_REQ_TYPE_SEND,
+	RDMA_SQ_REQ_TYPE_SEND_WITH_IMM,
+	RDMA_SQ_REQ_TYPE_SEND_WITH_INVALIDATE,
+	RDMA_SQ_REQ_TYPE_RDMA_WR,
+	RDMA_SQ_REQ_TYPE_RDMA_WR_WITH_IMM,
+	RDMA_SQ_REQ_TYPE_RDMA_RD,
+	RDMA_SQ_REQ_TYPE_ATOMIC_CMP_AND_SWAP,
+	RDMA_SQ_REQ_TYPE_ATOMIC_ADD,
+	RDMA_SQ_REQ_TYPE_LOCAL_INVALIDATE,
+	RDMA_SQ_REQ_TYPE_FAST_MR,
+	RDMA_SQ_REQ_TYPE_BIND,
+	RDMA_SQ_REQ_TYPE_INVALID,
+	MAX_RDMA_SQ_REQ_TYPE
+};
+
+struct rdma_sq_send_wqe {
+	__le32 inv_key_or_imm_data;
+	__le32 length;
+	__le32 xrc_srq;
+	u8 req_type;
+	u8 flags;
+#define RDMA_SQ_SEND_WQE_COMP_FLG_MASK         0x1
+#define RDMA_SQ_SEND_WQE_COMP_FLG_SHIFT        0
+#define RDMA_SQ_SEND_WQE_RD_FENCE_FLG_MASK     0x1
+#define RDMA_SQ_SEND_WQE_RD_FENCE_FLG_SHIFT    1
+#define RDMA_SQ_SEND_WQE_INV_FENCE_FLG_MASK    0x1
+#define RDMA_SQ_SEND_WQE_INV_FENCE_FLG_SHIFT   2
+#define RDMA_SQ_SEND_WQE_SE_FLG_MASK           0x1
+#define RDMA_SQ_SEND_WQE_SE_FLG_SHIFT          3
+#define RDMA_SQ_SEND_WQE_INLINE_FLG_MASK       0x1
+#define RDMA_SQ_SEND_WQE_INLINE_FLG_SHIFT      4
+#define RDMA_SQ_SEND_WQE_DIF_ON_HOST_FLG_MASK  0x1
+#define RDMA_SQ_SEND_WQE_DIF_ON_HOST_FLG_SHIFT 5
+#define RDMA_SQ_SEND_WQE_RESERVED0_MASK        0x3
+#define RDMA_SQ_SEND_WQE_RESERVED0_SHIFT       6
+	u8 wqe_size;
+	u8 prev_wqe_size;
+	__le32 reserved1[4];
+};
+
+struct rdma_sq_send_wqe_1st {
+	__le32 inv_key_or_imm_data;
+	__le32 length;
+	__le32 xrc_srq;
+	u8 req_type;
+	u8 flags;
+#define RDMA_SQ_SEND_WQE_1ST_COMP_FLG_MASK       0x1
+#define RDMA_SQ_SEND_WQE_1ST_COMP_FLG_SHIFT      0
+#define RDMA_SQ_SEND_WQE_1ST_RD_FENCE_FLG_MASK   0x1
+#define RDMA_SQ_SEND_WQE_1ST_RD_FENCE_FLG_SHIFT  1
+#define RDMA_SQ_SEND_WQE_1ST_INV_FENCE_FLG_MASK  0x1
+#define RDMA_SQ_SEND_WQE_1ST_INV_FENCE_FLG_SHIFT 2
+#define RDMA_SQ_SEND_WQE_1ST_SE_FLG_MASK         0x1
+#define RDMA_SQ_SEND_WQE_1ST_SE_FLG_SHIFT        3
+#define RDMA_SQ_SEND_WQE_1ST_INLINE_FLG_MASK     0x1
+#define RDMA_SQ_SEND_WQE_1ST_INLINE_FLG_SHIFT    4
+#define RDMA_SQ_SEND_WQE_1ST_RESERVED0_MASK      0x7
+#define RDMA_SQ_SEND_WQE_1ST_RESERVED0_SHIFT     5
+	u8 wqe_size;
+	u8 prev_wqe_size;
+};
+
+struct rdma_sq_send_wqe_2st {
+	__le32 reserved1[4];
+};
+
 #endif /* __QED_HSI_RDMA__ */
diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c
index 084aed4..cd7c8cd 100644
--- a/drivers/infiniband/hw/qedr/verbs.c
+++ b/drivers/infiniband/hw/qedr/verbs.c
@@ -2456,3 +2456,1023 @@ err1:
 	kfree(mr);
 	return ERR_PTR(rc);
 }
+
+static inline int qedr_wq_is_full(struct qedr_qp_hwq_info *wq)
+{
+	return (((wq->prod + 1) % wq->max_wr) == wq->cons);
+}
+
+static int sge_data_len(struct ib_sge *sg_list, int num_sge)
+{
+	int i, len = 0;
+
+	for (i = 0; i < num_sge; i++)
+		len += sg_list[i].length;
+
+	return len;
+}
+
+static void swap_wqe_data64(u64 *p)
+{
+	int i;
+
+	for (i = 0; i < QEDR_SQE_ELEMENT_SIZE / sizeof(u64); i++, p++)
+		*p = cpu_to_be64(cpu_to_le64(*p));
+}
+
+static u32 qedr_prepare_sq_inline_data(struct qedr_dev *dev,
+				       struct qedr_qp *qp, u8 *wqe_size,
+				       struct ib_send_wr *wr,
+				       struct ib_send_wr **bad_wr, u8 *bits,
+				       u8 bit)
+{
+	u32 data_size = sge_data_len(wr->sg_list, wr->num_sge);
+	char *seg_prt, *wqe;
+	int i, seg_siz;
+
+	if (data_size > ROCE_REQ_MAX_INLINE_DATA_SIZE) {
+		DP_ERR(dev, "Too much inline data in WR: %d\n", data_size);
+		*bad_wr = wr;
+		return 0;
+	}
+
+	if (!data_size)
+		return data_size;
+
+	*bits |= bit;
+
+	seg_prt = NULL;
+	wqe = NULL;
+	seg_siz = 0;
+
+	/* Copy data inline */
+	for (i = 0; i < wr->num_sge; i++) {
+		u32 len = wr->sg_list[i].length;
+		void *src = (void *)(uintptr_t)wr->sg_list[i].addr;
+
+		while (len > 0) {
+			u32 cur;
+
+			/* New segment required */
+			if (!seg_siz) {
+				wqe = (char *)qed_chain_produce(&qp->sq.pbl);
+				seg_prt = wqe;
+				seg_siz = sizeof(struct rdma_sq_common_wqe);
+				(*wqe_size)++;
+			}
+
+			/* Calculate currently allowed length */
+			cur = min_t(u32, len, seg_siz);
+			memcpy(seg_prt, src, cur);
+
+			/* Update segment variables */
+			seg_prt += cur;
+			seg_siz -= cur;
+
+			/* Update sge variables */
+			src += cur;
+			len -= cur;
+
+			/* Swap fully-completed segments */
+			if (!seg_siz)
+				swap_wqe_data64((u64 *)wqe);
+		}
+	}
+
+	/* swap last not completed segment */
+	if (seg_siz)
+		swap_wqe_data64((u64 *)wqe);
+
+	return data_size;
+}
+
+#define RQ_SGE_SET(sge, vaddr, vlength, vflags)			\
+	do {							\
+		DMA_REGPAIR_LE(sge->addr, vaddr);		\
+		(sge)->length = cpu_to_le32(vlength);		\
+		(sge)->flags = cpu_to_le32(vflags);		\
+	} while (0)
+
+#define SRQ_HDR_SET(hdr, vwr_id, num_sge)			\
+	do {							\
+		DMA_REGPAIR_LE(hdr->wr_id, vwr_id);		\
+		(hdr)->num_sges = num_sge;			\
+	} while (0)
+
+#define SRQ_SGE_SET(sge, vaddr, vlength, vlkey)			\
+	do {							\
+		DMA_REGPAIR_LE(sge->addr, vaddr);		\
+		(sge)->length = cpu_to_le32(vlength);		\
+		(sge)->l_key = cpu_to_le32(vlkey);		\
+	} while (0)
+
+static u32 qedr_prepare_sq_sges(struct qedr_qp *qp, u8 *wqe_size,
+				struct ib_send_wr *wr)
+{
+	u32 data_size = 0;
+	int i;
+
+	for (i = 0; i < wr->num_sge; i++) {
+		struct rdma_sq_sge *sge = qed_chain_produce(&qp->sq.pbl);
+
+		DMA_REGPAIR_LE(sge->addr, wr->sg_list[i].addr);
+		sge->l_key = cpu_to_le32(wr->sg_list[i].lkey);
+		sge->length = cpu_to_le32(wr->sg_list[i].length);
+		data_size += wr->sg_list[i].length;
+	}
+
+	if (wqe_size)
+		*wqe_size += wr->num_sge;
+
+	return data_size;
+}
+
+static u32 qedr_prepare_sq_rdma_data(struct qedr_dev *dev,
+				     struct qedr_qp *qp,
+				     struct rdma_sq_rdma_wqe_1st *rwqe,
+				     struct rdma_sq_rdma_wqe_2nd *rwqe2,
+				     struct ib_send_wr *wr,
+				     struct ib_send_wr **bad_wr)
+{
+	rwqe2->r_key = cpu_to_le32(rdma_wr(wr)->rkey);
+	DMA_REGPAIR_LE(rwqe2->remote_va, rdma_wr(wr)->remote_addr);
+
+	if (wr->send_flags & IB_SEND_INLINE) {
+		u8 flags = 0;
+
+		SET_FIELD2(flags, RDMA_SQ_RDMA_WQE_1ST_INLINE_FLG, 1);
+		return qedr_prepare_sq_inline_data(dev, qp, &rwqe->wqe_size, wr,
+						   bad_wr, &rwqe->flags, flags);
+	}
+
+	return qedr_prepare_sq_sges(qp, &rwqe->wqe_size, wr);
+}
+
+static u32 qedr_prepare_sq_send_data(struct qedr_dev *dev,
+				     struct qedr_qp *qp,
+				     struct rdma_sq_send_wqe_1st *swqe,
+				     struct rdma_sq_send_wqe_2st *swqe2,
+				     struct ib_send_wr *wr,
+				     struct ib_send_wr **bad_wr)
+{
+	memset(swqe2, 0, sizeof(*swqe2));
+	if (wr->send_flags & IB_SEND_INLINE) {
+		u8 flags = 0;
+
+		SET_FIELD2(flags, RDMA_SQ_SEND_WQE_INLINE_FLG, 1);
+		return qedr_prepare_sq_inline_data(dev, qp, &swqe->wqe_size, wr,
+						   bad_wr, &swqe->flags, flags);
+	}
+
+	return qedr_prepare_sq_sges(qp, &swqe->wqe_size, wr);
+}
+
+static int qedr_prepare_reg(struct qedr_qp *qp,
+			    struct rdma_sq_fmr_wqe_1st *fwqe1,
+			    struct ib_reg_wr *wr)
+{
+	struct qedr_mr *mr = get_qedr_mr(wr->mr);
+	struct rdma_sq_fmr_wqe_2nd *fwqe2;
+
+	fwqe2 = (struct rdma_sq_fmr_wqe_2nd *)qed_chain_produce(&qp->sq.pbl);
+	fwqe1->addr.hi = upper_32_bits(mr->ibmr.iova);
+	fwqe1->addr.lo = lower_32_bits(mr->ibmr.iova);
+	fwqe1->l_key = wr->key;
+
+	SET_FIELD2(fwqe2->access_ctrl, RDMA_SQ_FMR_WQE_2ND_REMOTE_READ,
+		   !!(wr->access & IB_ACCESS_REMOTE_READ));
+	SET_FIELD2(fwqe2->access_ctrl, RDMA_SQ_FMR_WQE_2ND_REMOTE_WRITE,
+		   !!(wr->access & IB_ACCESS_REMOTE_WRITE));
+	SET_FIELD2(fwqe2->access_ctrl, RDMA_SQ_FMR_WQE_2ND_ENABLE_ATOMIC,
+		   !!(wr->access & IB_ACCESS_REMOTE_ATOMIC));
+	SET_FIELD2(fwqe2->access_ctrl, RDMA_SQ_FMR_WQE_2ND_LOCAL_READ, 1);
+	SET_FIELD2(fwqe2->access_ctrl, RDMA_SQ_FMR_WQE_2ND_LOCAL_WRITE,
+		   !!(wr->access & IB_ACCESS_LOCAL_WRITE));
+	fwqe2->fmr_ctrl = 0;
+
+	SET_FIELD2(fwqe2->fmr_ctrl, RDMA_SQ_FMR_WQE_2ND_PAGE_SIZE_LOG,
+		   ilog2(mr->ibmr.page_size) - 12);
+
+	fwqe2->length_hi = 0;
+	fwqe2->length_lo = mr->ibmr.length;
+	fwqe2->pbl_addr.hi = upper_32_bits(mr->info.pbl_table->pa);
+	fwqe2->pbl_addr.lo = lower_32_bits(mr->info.pbl_table->pa);
+
+	qp->wqe_wr_id[qp->sq.prod].mr = mr;
+
+	return 0;
+}
+
+enum ib_wc_opcode qedr_ib_to_wc_opcode(enum ib_wr_opcode opcode)
+{
+	switch (opcode) {
+	case IB_WR_RDMA_WRITE:
+	case IB_WR_RDMA_WRITE_WITH_IMM:
+		return IB_WC_RDMA_WRITE;
+	case IB_WR_SEND_WITH_IMM:
+	case IB_WR_SEND:
+	case IB_WR_SEND_WITH_INV:
+		return IB_WC_SEND;
+	case IB_WR_RDMA_READ:
+		return IB_WC_RDMA_READ;
+	case IB_WR_ATOMIC_CMP_AND_SWP:
+		return IB_WC_COMP_SWAP;
+	case IB_WR_ATOMIC_FETCH_AND_ADD:
+		return IB_WC_FETCH_ADD;
+	case IB_WR_REG_MR:
+		return IB_WC_REG_MR;
+	case IB_WR_LOCAL_INV:
+		return IB_WC_LOCAL_INV;
+	default:
+		return IB_WC_SEND;
+	}
+}
+
+inline bool qedr_can_post_send(struct qedr_qp *qp, struct ib_send_wr *wr)
+{
+	int wq_is_full, err_wr, pbl_is_full;
+	struct qedr_dev *dev = qp->dev;
+
+	/* prevent SQ overflow and/or processing of a bad WR */
+	err_wr = wr->num_sge > qp->sq.max_sges;
+	wq_is_full = qedr_wq_is_full(&qp->sq);
+	pbl_is_full = qed_chain_get_elem_left_u32(&qp->sq.pbl) <
+		      QEDR_MAX_SQE_ELEMENTS_PER_SQE;
+	if (wq_is_full || err_wr || pbl_is_full) {
+		if (wq_is_full && !(qp->err_bitmap & QEDR_QP_ERR_SQ_FULL)) {
+			DP_ERR(dev,
+			       "error: WQ is full. Post send on QP %p failed (this error appears only once)\n",
+			       qp);
+			qp->err_bitmap |= QEDR_QP_ERR_SQ_FULL;
+		}
+
+		if (err_wr && !(qp->err_bitmap & QEDR_QP_ERR_BAD_SR)) {
+			DP_ERR(dev,
+			       "error: WR is bad. Post send on QP %p failed (this error appears only once)\n",
+			       qp);
+			qp->err_bitmap |= QEDR_QP_ERR_BAD_SR;
+		}
+
+		if (pbl_is_full &&
+		    !(qp->err_bitmap & QEDR_QP_ERR_SQ_PBL_FULL)) {
+			DP_ERR(dev,
+			       "error: WQ PBL is full. Post send on QP %p failed (this error appears only once)\n",
+			       qp);
+			qp->err_bitmap |= QEDR_QP_ERR_SQ_PBL_FULL;
+		}
+		return false;
+	}
+	return true;
+}
+
+int __qedr_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
+		     struct ib_send_wr **bad_wr)
+{
+	struct qedr_dev *dev = get_qedr_dev(ibqp->device);
+	struct qedr_qp *qp = get_qedr_qp(ibqp);
+	struct rdma_sq_atomic_wqe_1st *awqe1;
+	struct rdma_sq_atomic_wqe_2nd *awqe2;
+	struct rdma_sq_atomic_wqe_3rd *awqe3;
+	struct rdma_sq_send_wqe_2st *swqe2;
+	struct rdma_sq_local_inv_wqe *iwqe;
+	struct rdma_sq_rdma_wqe_2nd *rwqe2;
+	struct rdma_sq_send_wqe_1st *swqe;
+	struct rdma_sq_rdma_wqe_1st *rwqe;
+	struct rdma_sq_fmr_wqe_1st *fwqe1;
+	struct rdma_sq_common_wqe *wqe;
+	u32 length;
+	int rc = 0;
+	bool comp;
+
+	if (!qedr_can_post_send(qp, wr)) {
+		*bad_wr = wr;
+		return -ENOMEM;
+	}
+
+	wqe = qed_chain_produce(&qp->sq.pbl);
+	qp->wqe_wr_id[qp->sq.prod].signaled =
+		!!(wr->send_flags & IB_SEND_SIGNALED) || qp->signaled;
+
+	wqe->flags = 0;
+	SET_FIELD2(wqe->flags, RDMA_SQ_SEND_WQE_SE_FLG,
+		   !!(wr->send_flags & IB_SEND_SOLICITED));
+	comp = (!!(wr->send_flags & IB_SEND_SIGNALED)) || qp->signaled;
+	SET_FIELD2(wqe->flags, RDMA_SQ_SEND_WQE_COMP_FLG, comp);
+	SET_FIELD2(wqe->flags, RDMA_SQ_SEND_WQE_RD_FENCE_FLG,
+		   !!(wr->send_flags & IB_SEND_FENCE));
+	wqe->prev_wqe_size = qp->prev_wqe_size;
+
+	qp->wqe_wr_id[qp->sq.prod].opcode = qedr_ib_to_wc_opcode(wr->opcode);
+
+	switch (wr->opcode) {
+	case IB_WR_SEND_WITH_IMM:
+		wqe->req_type = RDMA_SQ_REQ_TYPE_SEND_WITH_IMM;
+		swqe = (struct rdma_sq_send_wqe_1st *)wqe;
+		swqe->wqe_size = 2;
+		swqe2 = qed_chain_produce(&qp->sq.pbl);
+
+		swqe->inv_key_or_imm_data = cpu_to_le32(wr->ex.imm_data);
+		length = qedr_prepare_sq_send_data(dev, qp, swqe, swqe2,
+						   wr, bad_wr);
+		swqe->length = cpu_to_le32(length);
+		qp->wqe_wr_id[qp->sq.prod].wqe_size = swqe->wqe_size;
+		qp->prev_wqe_size = swqe->wqe_size;
+		qp->wqe_wr_id[qp->sq.prod].bytes_len = swqe->length;
+		break;
+	case IB_WR_SEND:
+		wqe->req_type = RDMA_SQ_REQ_TYPE_SEND;
+		swqe = (struct rdma_sq_send_wqe_1st *)wqe;
+
+		swqe->wqe_size = 2;
+		swqe2 = qed_chain_produce(&qp->sq.pbl);
+		length = qedr_prepare_sq_send_data(dev, qp, swqe, swqe2,
+						   wr, bad_wr);
+		swqe->length = cpu_to_le32(length);
+		qp->wqe_wr_id[qp->sq.prod].wqe_size = swqe->wqe_size;
+		qp->prev_wqe_size = swqe->wqe_size;
+		qp->wqe_wr_id[qp->sq.prod].bytes_len = swqe->length;
+		break;
+	case IB_WR_SEND_WITH_INV:
+		wqe->req_type = RDMA_SQ_REQ_TYPE_SEND_WITH_INVALIDATE;
+		swqe = (struct rdma_sq_send_wqe_1st *)wqe;
+		swqe2 = qed_chain_produce(&qp->sq.pbl);
+		swqe->wqe_size = 2;
+		swqe->inv_key_or_imm_data = cpu_to_le32(wr->ex.invalidate_rkey);
+		length = qedr_prepare_sq_send_data(dev, qp, swqe, swqe2,
+						   wr, bad_wr);
+		swqe->length = cpu_to_le32(length);
+		qp->wqe_wr_id[qp->sq.prod].wqe_size = swqe->wqe_size;
+		qp->prev_wqe_size = swqe->wqe_size;
+		qp->wqe_wr_id[qp->sq.prod].bytes_len = swqe->length;
+		break;
+
+	case IB_WR_RDMA_WRITE_WITH_IMM:
+		wqe->req_type = RDMA_SQ_REQ_TYPE_RDMA_WR_WITH_IMM;
+		rwqe = (struct rdma_sq_rdma_wqe_1st *)wqe;
+
+		rwqe->wqe_size = 2;
+		rwqe->imm_data = htonl(cpu_to_le32(wr->ex.imm_data));
+		rwqe2 = qed_chain_produce(&qp->sq.pbl);
+		length = qedr_prepare_sq_rdma_data(dev, qp, rwqe, rwqe2,
+						   wr, bad_wr);
+		rwqe->length = cpu_to_le32(length);
+		qp->wqe_wr_id[qp->sq.prod].wqe_size = rwqe->wqe_size;
+		qp->prev_wqe_size = rwqe->wqe_size;
+		qp->wqe_wr_id[qp->sq.prod].bytes_len = rwqe->length;
+		break;
+	case IB_WR_RDMA_WRITE:
+		wqe->req_type = RDMA_SQ_REQ_TYPE_RDMA_WR;
+		rwqe = (struct rdma_sq_rdma_wqe_1st *)wqe;
+
+		rwqe->wqe_size = 2;
+		rwqe2 = qed_chain_produce(&qp->sq.pbl);
+		length = qedr_prepare_sq_rdma_data(dev, qp, rwqe, rwqe2,
+						   wr, bad_wr);
+		rwqe->length = cpu_to_le32(length);
+		qp->wqe_wr_id[qp->sq.prod].wqe_size = rwqe->wqe_size;
+		qp->prev_wqe_size = rwqe->wqe_size;
+		qp->wqe_wr_id[qp->sq.prod].bytes_len = rwqe->length;
+		break;
+	case IB_WR_RDMA_READ_WITH_INV:
+		DP_ERR(dev,
+		       "RDMA READ WITH INVALIDATE not supported\n");
+		*bad_wr = wr;
+		rc = -EINVAL;
+		break;
+
+	case IB_WR_RDMA_READ:
+		wqe->req_type = RDMA_SQ_REQ_TYPE_RDMA_RD;
+		rwqe = (struct rdma_sq_rdma_wqe_1st *)wqe;
+
+		rwqe->wqe_size = 2;
+		rwqe2 = qed_chain_produce(&qp->sq.pbl);
+		length = qedr_prepare_sq_rdma_data(dev, qp, rwqe, rwqe2,
+						   wr, bad_wr);
+		rwqe->length = cpu_to_le32(length);
+		qp->wqe_wr_id[qp->sq.prod].wqe_size = rwqe->wqe_size;
+		qp->prev_wqe_size = rwqe->wqe_size;
+		qp->wqe_wr_id[qp->sq.prod].bytes_len = rwqe->length;
+		break;
+
+	case IB_WR_ATOMIC_CMP_AND_SWP:
+	case IB_WR_ATOMIC_FETCH_AND_ADD:
+		awqe1 = (struct rdma_sq_atomic_wqe_1st *)wqe;
+		awqe1->wqe_size = 4;
+
+		awqe2 = qed_chain_produce(&qp->sq.pbl);
+		DMA_REGPAIR_LE(awqe2->remote_va, atomic_wr(wr)->remote_addr);
+		awqe2->r_key = cpu_to_le32(atomic_wr(wr)->rkey);
+
+		awqe3 = qed_chain_produce(&qp->sq.pbl);
+
+		if (wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) {
+			wqe->req_type = RDMA_SQ_REQ_TYPE_ATOMIC_ADD;
+			DMA_REGPAIR_LE(awqe3->swap_data,
+				       atomic_wr(wr)->compare_add);
+		} else {
+			wqe->req_type = RDMA_SQ_REQ_TYPE_ATOMIC_CMP_AND_SWAP;
+			DMA_REGPAIR_LE(awqe3->swap_data,
+				       atomic_wr(wr)->swap);
+			DMA_REGPAIR_LE(awqe3->cmp_data,
+				       atomic_wr(wr)->compare_add);
+		}
+
+		qedr_prepare_sq_sges(qp, NULL, wr);
+
+		qp->wqe_wr_id[qp->sq.prod].wqe_size = awqe1->wqe_size;
+		qp->prev_wqe_size = awqe1->wqe_size;
+		break;
+
+	case IB_WR_LOCAL_INV:
+		iwqe = (struct rdma_sq_local_inv_wqe *)wqe;
+		iwqe->wqe_size = 1;
+
+		iwqe->req_type = RDMA_SQ_REQ_TYPE_LOCAL_INVALIDATE;
+		iwqe->inv_l_key = wr->ex.invalidate_rkey;
+		qp->wqe_wr_id[qp->sq.prod].wqe_size = iwqe->wqe_size;
+		qp->prev_wqe_size = iwqe->wqe_size;
+		break;
+	case IB_WR_REG_MR:
+		DP_DEBUG(dev, QEDR_MSG_CQ, "REG_MR\n");
+		wqe->req_type = RDMA_SQ_REQ_TYPE_FAST_MR;
+		fwqe1 = (struct rdma_sq_fmr_wqe_1st *)wqe;
+		fwqe1->wqe_size = 2;
+
+		rc = qedr_prepare_reg(qp, fwqe1, reg_wr(wr));
+		if (rc) {
+			DP_ERR(dev, "IB_REG_MR failed rc=%d\n", rc);
+			*bad_wr = wr;
+			break;
+		}
+
+		qp->wqe_wr_id[qp->sq.prod].wqe_size = fwqe1->wqe_size;
+		qp->prev_wqe_size = fwqe1->wqe_size;
+		break;
+	default:
+		DP_ERR(dev, "invalid opcode 0x%x!\n", wr->opcode);
+		rc = -EINVAL;
+		*bad_wr = wr;
+		break;
+	}
+
+	if (*bad_wr) {
+		u16 value;
+
+		/* Restore prod to its position before
+		 * this WR was processed
+		 */
+		value = le16_to_cpu(qp->sq.db_data.data.value);
+		qed_chain_set_prod(&qp->sq.pbl, value, wqe);
+
+		/* Restore prev_wqe_size */
+		qp->prev_wqe_size = wqe->prev_wqe_size;
+		rc = -EINVAL;
+		DP_ERR(dev, "POST SEND FAILED\n");
+	}
+
+	return rc;
+}
+
+int qedr_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
+		   struct ib_send_wr **bad_wr)
+{
+	struct qedr_dev *dev = get_qedr_dev(ibqp->device);
+	struct qedr_qp *qp = get_qedr_qp(ibqp);
+	unsigned long flags;
+	int rc = 0;
+
+	*bad_wr = NULL;
+
+	spin_lock_irqsave(&qp->q_lock, flags);
+
+	if ((qp->state == QED_ROCE_QP_STATE_RESET) ||
+	    (qp->state == QED_ROCE_QP_STATE_ERR)) {
+		spin_unlock_irqrestore(&qp->q_lock, flags);
+		*bad_wr = wr;
+		DP_DEBUG(dev, QEDR_MSG_CQ,
+			 "QP in wrong state! QP icid=0x%x state %d\n",
+			 qp->icid, qp->state);
+		return -EINVAL;
+	}
+
+	if (!wr) {
+		DP_ERR(dev, "Got an empty post send.\n");
+		return -EINVAL;
+	}
+
+	while (wr) {
+		rc = __qedr_post_send(ibqp, wr, bad_wr);
+		if (rc)
+			break;
+
+		qp->wqe_wr_id[qp->sq.prod].wr_id = wr->wr_id;
+
+		qedr_inc_sw_prod(&qp->sq);
+
+		qp->sq.db_data.data.value++;
+
+		wr = wr->next;
+	}
+
+	/* Trigger doorbell
+	 * If there was a failure in the first WR then it will be triggered in
+	 * vane. However this is not harmful (as long as the producer value is
+	 * unchanged). For performance reasons we avoid checking for this
+	 * redundant doorbell.
+	 */
+	wmb();
+	writel(qp->sq.db_data.raw, qp->sq.db);
+
+	/* Make sure write sticks */
+	mmiowb();
+
+	spin_unlock_irqrestore(&qp->q_lock, flags);
+
+	return rc;
+}
+
+int qedr_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
+		   struct ib_recv_wr **bad_wr)
+{
+	struct qedr_qp *qp = get_qedr_qp(ibqp);
+	struct qedr_dev *dev = qp->dev;
+	unsigned long flags;
+	int status = 0;
+
+	spin_lock_irqsave(&qp->q_lock, flags);
+
+	if ((qp->state == QED_ROCE_QP_STATE_RESET) ||
+	    (qp->state == QED_ROCE_QP_STATE_ERR)) {
+		spin_unlock_irqrestore(&qp->q_lock, flags);
+		*bad_wr = wr;
+		return -EINVAL;
+	}
+
+	while (wr) {
+		int i;
+
+		if (qed_chain_get_elem_left_u32(&qp->rq.pbl) <
+		    QEDR_MAX_RQE_ELEMENTS_PER_RQE ||
+		    wr->num_sge > qp->rq.max_sges) {
+			DP_ERR(dev, "Can't post WR  (%d < %d) || (%d > %d)\n",
+			       qed_chain_get_elem_left_u32(&qp->rq.pbl),
+			       QEDR_MAX_RQE_ELEMENTS_PER_RQE, wr->num_sge,
+			       qp->rq.max_sges);
+			status = -ENOMEM;
+			*bad_wr = wr;
+			break;
+		}
+		for (i = 0; i < wr->num_sge; i++) {
+			u32 flags = 0;
+			struct rdma_rq_sge *rqe =
+			    qed_chain_produce(&qp->rq.pbl);
+
+			/* First one must include the number
+			 * of SGE in the list
+			 */
+			if (!i)
+				SET_FIELD(flags, RDMA_RQ_SGE_NUM_SGES,
+					  wr->num_sge);
+
+			SET_FIELD(flags, RDMA_RQ_SGE_L_KEY,
+				  wr->sg_list[i].lkey);
+
+			RQ_SGE_SET(rqe, wr->sg_list[i].addr,
+				   wr->sg_list[i].length, flags);
+		}
+
+		/* Special case of no sges. FW requires between 1-4 sges...
+		 * in this case we need to post 1 sge with length zero. this is
+		 * because rdma write with immediate consumes an RQ.
+		 */
+		if (!wr->num_sge) {
+			u32 flags = 0;
+			struct rdma_rq_sge *rqe =
+			    qed_chain_produce(&qp->rq.pbl);
+
+			/* First one must include the number
+			 * of SGE in the list
+			 */
+			SET_FIELD(flags, RDMA_RQ_SGE_L_KEY, 0);
+			SET_FIELD(flags, RDMA_RQ_SGE_NUM_SGES, 1);
+
+			RQ_SGE_SET(rqe, 0, 0, flags);
+			i = 1;
+		}
+
+		qp->rqe_wr_id[qp->rq.prod].wr_id = wr->wr_id;
+		qp->rqe_wr_id[qp->rq.prod].wqe_size = i;
+
+		qedr_inc_sw_prod(&qp->rq);
+
+		/* Flush all the writes before signalling doorbell */
+		wmb();
+
+		qp->rq.db_data.data.value++;
+
+		writel(qp->rq.db_data.raw, qp->rq.db);
+
+		/* Make sure write sticks */
+		mmiowb();
+
+		wr = wr->next;
+	}
+
+	spin_unlock_irqrestore(&qp->q_lock, flags);
+
+	return status;
+}
+
+static int is_valid_cqe(struct qedr_cq *cq, union rdma_cqe *cqe)
+{
+	struct rdma_cqe_requester *resp_cqe = &cqe->req;
+
+	return (resp_cqe->flags & RDMA_CQE_REQUESTER_TOGGLE_BIT_MASK) ==
+		cq->pbl_toggle;
+}
+
+static struct qedr_qp *cqe_get_qp(union rdma_cqe *cqe)
+{
+	struct rdma_cqe_requester *resp_cqe = &cqe->req;
+	struct qedr_qp *qp;
+
+	qp = (struct qedr_qp *)(uintptr_t)HILO_GEN(resp_cqe->qp_handle.hi,
+						   resp_cqe->qp_handle.lo,
+						   u64);
+	return qp;
+}
+
+static enum rdma_cqe_type cqe_get_type(union rdma_cqe *cqe)
+{
+	struct rdma_cqe_requester *resp_cqe = &cqe->req;
+
+	return GET_FIELD(resp_cqe->flags, RDMA_CQE_REQUESTER_TYPE);
+}
+
+/* Return latest CQE (needs processing) */
+static union rdma_cqe *get_cqe(struct qedr_cq *cq)
+{
+	return cq->latest_cqe;
+}
+
+/* In fmr we need to increase the number of fmr completed counter for the fmr
+ * algorithm determining whether we can free a pbl or not.
+ * we need to perform this whether the work request was signaled or not. for
+ * this purpose we call this function from the condition that checks if a wr
+ * should be skipped, to make sure we don't miss it ( possibly this fmr
+ * operation was not signalted)
+ */
+static inline void qedr_chk_if_fmr(struct qedr_qp *qp)
+{
+	if (qp->wqe_wr_id[qp->sq.cons].opcode == IB_WC_REG_MR)
+		qp->wqe_wr_id[qp->sq.cons].mr->info.completed++;
+}
+
+static int process_req(struct qedr_dev *dev, struct qedr_qp *qp,
+		       struct qedr_cq *cq, int num_entries,
+		       struct ib_wc *wc, u16 hw_cons, enum ib_wc_status status,
+		       int force)
+{
+	u16 cnt = 0;
+
+	while (num_entries && qp->sq.wqe_cons != hw_cons) {
+		if (!qp->wqe_wr_id[qp->sq.cons].signaled && !force) {
+			qedr_chk_if_fmr(qp);
+			/* skip WC */
+			goto next_cqe;
+		}
+
+		/* fill WC */
+		wc->status = status;
+		wc->wc_flags = 0;
+		wc->src_qp = qp->id;
+		wc->qp = &qp->ibqp;
+
+		wc->wr_id = qp->wqe_wr_id[qp->sq.cons].wr_id;
+		wc->opcode = qp->wqe_wr_id[qp->sq.cons].opcode;
+
+		switch (wc->opcode) {
+		case IB_WC_RDMA_WRITE:
+			wc->byte_len = qp->wqe_wr_id[qp->sq.cons].bytes_len;
+			break;
+		case IB_WC_COMP_SWAP:
+		case IB_WC_FETCH_ADD:
+			wc->byte_len = 8;
+			break;
+		case IB_WC_REG_MR:
+			qp->wqe_wr_id[qp->sq.cons].mr->info.completed++;
+			break;
+		default:
+			break;
+		}
+
+		num_entries--;
+		wc++;
+		cnt++;
+next_cqe:
+		while (qp->wqe_wr_id[qp->sq.cons].wqe_size--)
+			qed_chain_consume(&qp->sq.pbl);
+		qedr_inc_sw_cons(&qp->sq);
+	}
+
+	return cnt;
+}
+
+static int qedr_poll_cq_req(struct qedr_dev *dev,
+			    struct qedr_qp *qp, struct qedr_cq *cq,
+			    int num_entries, struct ib_wc *wc,
+			    struct rdma_cqe_requester *req)
+{
+	int cnt = 0;
+
+	switch (req->status) {
+	case RDMA_CQE_REQ_STS_OK:
+		cnt = process_req(dev, qp, cq, num_entries, wc, req->sq_cons,
+				  IB_WC_SUCCESS, 0);
+		break;
+	case RDMA_CQE_REQ_STS_WORK_REQUEST_FLUSHED_ERR:
+		DP_ERR(dev,
+		       "Error: POLL CQ with RDMA_CQE_REQ_STS_WORK_REQUEST_FLUSHED_ERR. CQ icid=0x%x, QP icid=0x%x\n",
+		       cq->icid, qp->icid);
+		cnt = process_req(dev, qp, cq, num_entries, wc, req->sq_cons,
+				  IB_WC_WR_FLUSH_ERR, 0);
+		break;
+	default:
+		/* process all WQE before the cosumer */
+		qp->state = QED_ROCE_QP_STATE_ERR;
+		cnt = process_req(dev, qp, cq, num_entries, wc,
+				  req->sq_cons - 1, IB_WC_SUCCESS, 0);
+		wc += cnt;
+		/* if we have extra WC fill it with actual error info */
+		if (cnt < num_entries) {
+			enum ib_wc_status wc_status;
+
+			switch (req->status) {
+			case RDMA_CQE_REQ_STS_BAD_RESPONSE_ERR:
+				DP_ERR(dev,
+				       "Error: POLL CQ with RDMA_CQE_REQ_STS_BAD_RESPONSE_ERR. CQ icid=0x%x, QP icid=0x%x\n",
+				       cq->icid, qp->icid);
+				wc_status = IB_WC_BAD_RESP_ERR;
+				break;
+			case RDMA_CQE_REQ_STS_LOCAL_LENGTH_ERR:
+				DP_ERR(dev,
+				       "Error: POLL CQ with RDMA_CQE_REQ_STS_LOCAL_LENGTH_ERR. CQ icid=0x%x, QP icid=0x%x\n",
+				       cq->icid, qp->icid);
+				wc_status = IB_WC_LOC_LEN_ERR;
+				break;
+			case RDMA_CQE_REQ_STS_LOCAL_QP_OPERATION_ERR:
+				DP_ERR(dev,
+				       "Error: POLL CQ with RDMA_CQE_REQ_STS_LOCAL_QP_OPERATION_ERR. CQ icid=0x%x, QP icid=0x%x\n",
+				       cq->icid, qp->icid);
+				wc_status = IB_WC_LOC_QP_OP_ERR;
+				break;
+			case RDMA_CQE_REQ_STS_LOCAL_PROTECTION_ERR:
+				DP_ERR(dev,
+				       "Error: POLL CQ with RDMA_CQE_REQ_STS_LOCAL_PROTECTION_ERR. CQ icid=0x%x, QP icid=0x%x\n",
+				       cq->icid, qp->icid);
+				wc_status = IB_WC_LOC_PROT_ERR;
+				break;
+			case RDMA_CQE_REQ_STS_MEMORY_MGT_OPERATION_ERR:
+				DP_ERR(dev,
+				       "Error: POLL CQ with RDMA_CQE_REQ_STS_MEMORY_MGT_OPERATION_ERR. CQ icid=0x%x, QP icid=0x%x\n",
+				       cq->icid, qp->icid);
+				wc_status = IB_WC_MW_BIND_ERR;
+				break;
+			case RDMA_CQE_REQ_STS_REMOTE_INVALID_REQUEST_ERR:
+				DP_ERR(dev,
+				       "Error: POLL CQ with RDMA_CQE_REQ_STS_REMOTE_INVALID_REQUEST_ERR. CQ icid=0x%x, QP icid=0x%x\n",
+				       cq->icid, qp->icid);
+				wc_status = IB_WC_REM_INV_REQ_ERR;
+				break;
+			case RDMA_CQE_REQ_STS_REMOTE_ACCESS_ERR:
+				DP_ERR(dev,
+				       "Error: POLL CQ with RDMA_CQE_REQ_STS_REMOTE_ACCESS_ERR. CQ icid=0x%x, QP icid=0x%x\n",
+				       cq->icid, qp->icid);
+				wc_status = IB_WC_REM_ACCESS_ERR;
+				break;
+			case RDMA_CQE_REQ_STS_REMOTE_OPERATION_ERR:
+				DP_ERR(dev,
+				       "Error: POLL CQ with RDMA_CQE_REQ_STS_REMOTE_OPERATION_ERR. CQ icid=0x%x, QP icid=0x%x\n",
+				       cq->icid, qp->icid);
+				wc_status = IB_WC_REM_OP_ERR;
+				break;
+			case RDMA_CQE_REQ_STS_RNR_NAK_RETRY_CNT_ERR:
+				DP_ERR(dev,
+				       "Error: POLL CQ with RDMA_CQE_REQ_STS_RNR_NAK_RETRY_CNT_ERR. CQ icid=0x%x, QP icid=0x%x\n",
+				       cq->icid, qp->icid);
+				wc_status = IB_WC_RNR_RETRY_EXC_ERR;
+				break;
+			case RDMA_CQE_REQ_STS_TRANSPORT_RETRY_CNT_ERR:
+				DP_ERR(dev,
+				       "Error: POLL CQ with ROCE_CQE_REQ_STS_TRANSPORT_RETRY_CNT_ERR. CQ icid=0x%x, QP icid=0x%x\n",
+				       cq->icid, qp->icid);
+				wc_status = IB_WC_RETRY_EXC_ERR;
+				break;
+			default:
+				DP_ERR(dev,
+				       "Error: POLL CQ with IB_WC_GENERAL_ERR. CQ icid=0x%x, QP icid=0x%x\n",
+				       cq->icid, qp->icid);
+				wc_status = IB_WC_GENERAL_ERR;
+			}
+			cnt += process_req(dev, qp, cq, 1, wc, req->sq_cons,
+					   wc_status, 1);
+		}
+	}
+
+	return cnt;
+}
+
+static void __process_resp_one(struct qedr_dev *dev, struct qedr_qp *qp,
+			       struct qedr_cq *cq, struct ib_wc *wc,
+			       struct rdma_cqe_responder *resp, u64 wr_id)
+{
+	enum ib_wc_status wc_status = IB_WC_SUCCESS;
+	u8 flags;
+
+	wc->opcode = IB_WC_RECV;
+	wc->wc_flags = 0;
+
+	switch (resp->status) {
+	case RDMA_CQE_RESP_STS_LOCAL_ACCESS_ERR:
+		wc_status = IB_WC_LOC_ACCESS_ERR;
+		break;
+	case RDMA_CQE_RESP_STS_LOCAL_LENGTH_ERR:
+		wc_status = IB_WC_LOC_LEN_ERR;
+		break;
+	case RDMA_CQE_RESP_STS_LOCAL_QP_OPERATION_ERR:
+		wc_status = IB_WC_LOC_QP_OP_ERR;
+		break;
+	case RDMA_CQE_RESP_STS_LOCAL_PROTECTION_ERR:
+		wc_status = IB_WC_LOC_PROT_ERR;
+		break;
+	case RDMA_CQE_RESP_STS_MEMORY_MGT_OPERATION_ERR:
+		wc_status = IB_WC_MW_BIND_ERR;
+		break;
+	case RDMA_CQE_RESP_STS_REMOTE_INVALID_REQUEST_ERR:
+		wc_status = IB_WC_REM_INV_RD_REQ_ERR;
+		break;
+	case RDMA_CQE_RESP_STS_OK:
+		wc_status = IB_WC_SUCCESS;
+		wc->byte_len = le32_to_cpu(resp->length);
+
+		flags = resp->flags & QEDR_RESP_RDMA_IMM;
+
+		if (flags == QEDR_RESP_RDMA_IMM)
+			wc->opcode = IB_WC_RECV_RDMA_WITH_IMM;
+
+		if (flags == QEDR_RESP_RDMA_IMM || flags == QEDR_RESP_IMM) {
+			wc->ex.imm_data =
+				le32_to_cpu(resp->imm_data_or_inv_r_Key);
+			wc->wc_flags |= IB_WC_WITH_IMM;
+		}
+		break;
+	default:
+		wc->status = IB_WC_GENERAL_ERR;
+		DP_ERR(dev, "Invalid CQE status detected\n");
+	}
+
+	/* fill WC */
+	wc->status = wc_status;
+	wc->src_qp = qp->id;
+	wc->qp = &qp->ibqp;
+	wc->wr_id = wr_id;
+}
+
+static int process_resp_one(struct qedr_dev *dev, struct qedr_qp *qp,
+			    struct qedr_cq *cq, struct ib_wc *wc,
+			    struct rdma_cqe_responder *resp)
+{
+	u64 wr_id = qp->rqe_wr_id[qp->rq.cons].wr_id;
+
+	__process_resp_one(dev, qp, cq, wc, resp, wr_id);
+
+	while (qp->rqe_wr_id[qp->rq.cons].wqe_size--)
+		qed_chain_consume(&qp->rq.pbl);
+	qedr_inc_sw_cons(&qp->rq);
+
+	return 1;
+}
+
+static int process_resp_flush(struct qedr_qp *qp, struct qedr_cq *cq,
+			      int num_entries, struct ib_wc *wc, u16 hw_cons)
+{
+	u16 cnt = 0;
+
+	while (num_entries && qp->rq.wqe_cons != hw_cons) {
+		/* fill WC */
+		wc->status = IB_WC_WR_FLUSH_ERR;
+		wc->wc_flags = 0;
+		wc->src_qp = qp->id;
+		wc->byte_len = 0;
+		wc->wr_id = qp->rqe_wr_id[qp->rq.cons].wr_id;
+		wc->qp = &qp->ibqp;
+		num_entries--;
+		wc++;
+		cnt++;
+		while (qp->rqe_wr_id[qp->rq.cons].wqe_size--)
+			qed_chain_consume(&qp->rq.pbl);
+		qedr_inc_sw_cons(&qp->rq);
+	}
+
+	return cnt;
+}
+
+static void try_consume_resp_cqe(struct qedr_cq *cq, struct qedr_qp *qp,
+				 struct rdma_cqe_responder *resp, int *update)
+{
+	if (le16_to_cpu(resp->rq_cons) == qp->rq.wqe_cons) {
+		consume_cqe(cq);
+		*update |= 1;
+	}
+}
+
+static int qedr_poll_cq_resp(struct qedr_dev *dev, struct qedr_qp *qp,
+			     struct qedr_cq *cq, int num_entries,
+			     struct ib_wc *wc, struct rdma_cqe_responder *resp,
+			     int *update)
+{
+	int cnt;
+
+	if (resp->status == RDMA_CQE_RESP_STS_WORK_REQUEST_FLUSHED_ERR) {
+		cnt = process_resp_flush(qp, cq, num_entries, wc,
+					 resp->rq_cons);
+		try_consume_resp_cqe(cq, qp, resp, update);
+	} else {
+		cnt = process_resp_one(dev, qp, cq, wc, resp);
+		consume_cqe(cq);
+		*update |= 1;
+	}
+
+	return cnt;
+}
+
+static void try_consume_req_cqe(struct qedr_cq *cq, struct qedr_qp *qp,
+				struct rdma_cqe_requester *req, int *update)
+{
+	if (le16_to_cpu(req->sq_cons) == qp->sq.wqe_cons) {
+		consume_cqe(cq);
+		*update |= 1;
+	}
+}
+
+int qedr_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
+{
+	struct qedr_dev *dev = get_qedr_dev(ibcq->device);
+	struct qedr_cq *cq = get_qedr_cq(ibcq);
+	union rdma_cqe *cqe = cq->latest_cqe;
+	u32 old_cons, new_cons;
+	unsigned long flags;
+	int update = 0;
+	int done = 0;
+
+	spin_lock_irqsave(&cq->cq_lock, flags);
+	old_cons = qed_chain_get_cons_idx_u32(&cq->pbl);
+	while (num_entries && is_valid_cqe(cq, cqe)) {
+		struct qedr_qp *qp;
+		int cnt = 0;
+
+		/* prevent speculative reads of any field of CQE */
+		rmb();
+
+		qp = cqe_get_qp(cqe);
+		if (!qp) {
+			WARN(1, "Error: CQE QP pointer is NULL. CQE=%p\n", cqe);
+			break;
+		}
+
+		wc->qp = &qp->ibqp;
+
+		switch (cqe_get_type(cqe)) {
+		case RDMA_CQE_TYPE_REQUESTER:
+			cnt = qedr_poll_cq_req(dev, qp, cq, num_entries, wc,
+					       &cqe->req);
+			try_consume_req_cqe(cq, qp, &cqe->req, &update);
+			break;
+		case RDMA_CQE_TYPE_RESPONDER_RQ:
+			cnt = qedr_poll_cq_resp(dev, qp, cq, num_entries, wc,
+						&cqe->resp, &update);
+			break;
+		case RDMA_CQE_TYPE_INVALID:
+		default:
+			DP_ERR(dev, "Error: invalid CQE type = %d\n",
+			       cqe_get_type(cqe));
+		}
+		num_entries -= cnt;
+		wc += cnt;
+		done += cnt;
+
+		cqe = get_cqe(cq);
+	}
+	new_cons = qed_chain_get_cons_idx_u32(&cq->pbl);
+
+	cq->cq_cons += new_cons - old_cons;
+
+	if (update)
+		/* doorbell notifies abount latest VALID entry,
+		 * but chain already point to the next INVALID one
+		 */
+		doorbell_cq(cq, cq->cq_cons - 1, cq->arm_flags);
+
+	spin_unlock_irqrestore(&cq->cq_lock, flags);
+	return done;
+}
diff --git a/drivers/infiniband/hw/qedr/verbs.h b/drivers/infiniband/hw/qedr/verbs.h
index ce062dc..fbc6db5 100644
--- a/drivers/infiniband/hw/qedr/verbs.h
+++ b/drivers/infiniband/hw/qedr/verbs.h
@@ -84,4 +84,9 @@ int qedr_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
 
 struct ib_mr *qedr_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
 			    u32 max_num_sg);
+int qedr_poll_cq(struct ib_cq *, int num_entries, struct ib_wc *wc);
+int qedr_post_send(struct ib_qp *, struct ib_send_wr *,
+		   struct ib_send_wr **bad_wr);
+int qedr_post_recv(struct ib_qp *, struct ib_recv_wr *,
+		   struct ib_recv_wr **bad_wr);
 #endif
-- 
1.8.3.1

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[PATCH qedr 08/10] qedr: Add LL2 RoCE interface

[Ram Amrani]

Add light L2 interface for RoCE.

Signed-off-by: Rajesh Borundia <rajesh.borundia-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
Signed-off-by: Ram Amrani <Ram.Amrani-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
---
 drivers/infiniband/hw/qedr/main.c | 34 +++++++++++++++++++++++++++++++++-
 drivers/infiniband/hw/qedr/qedr.h |  2 +-
 2 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/qedr/main.c b/drivers/infiniband/hw/qedr/main.c
index 86c23d2..d423f72 100644
--- a/drivers/infiniband/hw/qedr/main.c
+++ b/drivers/infiniband/hw/qedr/main.c
@@ -722,6 +722,38 @@ static void qedr_shutdown(struct qedr_dev *dev)
 	qedr_remove(dev);
 }
 
+static void qedr_mac_address_change(struct qedr_dev *dev)
+{
+	union ib_gid *sgid = &dev->sgid_tbl[0];
+	u8 guid[8], mac_addr[6];
+	int rc;
+
+	/* Update SGID */
+	ether_addr_copy(&mac_addr[0], dev->ndev->dev_addr);
+	guid[0] = mac_addr[0] ^ 2;
+	guid[1] = mac_addr[1];
+	guid[2] = mac_addr[2];
+	guid[3] = 0xff;
+	guid[4] = 0xfe;
+	guid[5] = mac_addr[3];
+	guid[6] = mac_addr[4];
+	guid[7] = mac_addr[5];
+	sgid->global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL);
+	memcpy(&sgid->raw[8], guid, sizeof(guid));
+
+	/* Update LL2 */
+	rc = dev->ops->roce_ll2_set_mac_filter(dev->cdev,
+					       dev->gsi_ll2_mac_address,
+					       dev->ndev->dev_addr);
+
+	ether_addr_copy(dev->gsi_ll2_mac_address, dev->ndev->dev_addr);
+
+	qedr_ib_dispatch_event(dev, 1, IB_EVENT_GID_CHANGE);
+
+	if (rc)
+		DP_ERR(dev, "Error updating mac filter\n");
+}
+
 /* event handling via NIC driver ensures that all the NIC specific
  * initialization done before RoCE driver notifies
  * event to stack.
@@ -739,7 +771,7 @@ static void qedr_notify(struct qedr_dev *dev, enum qede_roce_event event)
 		qedr_shutdown(dev);
 		break;
 	case QEDE_CHANGE_ADDR:
-		qedr_ib_dispatch_event(dev, 1, IB_EVENT_GID_CHANGE);
+		qedr_mac_address_change(dev);
 		break;
 	default:
 		pr_err("Event not supported\n");
diff --git a/drivers/infiniband/hw/qedr/qedr.h b/drivers/infiniband/hw/qedr/qedr.h
index a623663..9e282fe 100644
--- a/drivers/infiniband/hw/qedr/qedr.h
+++ b/drivers/infiniband/hw/qedr/qedr.h
@@ -147,7 +147,7 @@ struct qedr_dev {
 	u8			dp_level;
 	u8			num_hwfns;
 	uint			wq_multiplier;
-
+	u8			gsi_ll2_mac_address[ETH_ALEN];
 };
 
 #define QEDR_MAX_SQ_PBL			(0x8000)
-- 
1.8.3.1

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[PATCH qedr 09/10] qedr: Add GSI support

[Ram Amrani]

Add support for GSI over light L2.

Signed-off-by: Rajesh Borundia <rajesh.borundia-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
Signed-off-by: Ram Amrani <Ram.Amrani-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
---
 drivers/infiniband/hw/qedr/Makefile  |   2 +-
 drivers/infiniband/hw/qedr/main.c    |   3 +
 drivers/infiniband/hw/qedr/qedr.h    |  15 +
 drivers/infiniband/hw/qedr/qedr_cm.c | 636 +++++++++++++++++++++++++++++++++++
 drivers/infiniband/hw/qedr/qedr_cm.h |  21 ++
 drivers/infiniband/hw/qedr/verbs.c   |  37 ++
 6 files changed, 713 insertions(+), 1 deletion(-)
 create mode 100644 drivers/infiniband/hw/qedr/qedr_cm.c

diff --git a/drivers/infiniband/hw/qedr/Makefile b/drivers/infiniband/hw/qedr/Makefile
index b10f2b1..ba7067c 100644
--- a/drivers/infiniband/hw/qedr/Makefile
+++ b/drivers/infiniband/hw/qedr/Makefile
@@ -1,3 +1,3 @@
 obj-$(CONFIG_INFINIBAND_QEDR) := qedr.o
 
-qedr-y := main.o verbs.o
+qedr-y := main.o verbs.o qedr_cm.o
diff --git a/drivers/infiniband/hw/qedr/main.c b/drivers/infiniband/hw/qedr/main.c
index d423f72..306a393 100644
--- a/drivers/infiniband/hw/qedr/main.c
+++ b/drivers/infiniband/hw/qedr/main.c
@@ -138,6 +138,9 @@ static int qedr_register_device(struct qedr_dev *dev)
 
 	dev->ibdev.query_pkey = qedr_query_pkey;
 
+	dev->ibdev.create_ah = qedr_create_ah;
+	dev->ibdev.destroy_ah = qedr_destroy_ah;
+
 	dev->ibdev.get_dma_mr = qedr_get_dma_mr;
 	dev->ibdev.dereg_mr = qedr_dereg_mr;
 	dev->ibdev.reg_user_mr = qedr_reg_user_mr;
diff --git a/drivers/infiniband/hw/qedr/qedr.h b/drivers/infiniband/hw/qedr/qedr.h
index 9e282fe..bc6ce29 100644
--- a/drivers/infiniband/hw/qedr/qedr.h
+++ b/drivers/infiniband/hw/qedr/qedr.h
@@ -55,6 +55,7 @@
 #define QEDR_MSG_RQ   "  RQ"
 #define QEDR_MSG_SQ   "  SQ"
 #define QEDR_MSG_QP   "  QP"
+#define QEDR_MSG_GSI  " GSI"
 
 #define QEDR_CQ_MAGIC_NUMBER   (0x11223344)
 
@@ -148,6 +149,10 @@ struct qedr_dev {
 	u8			num_hwfns;
 	uint			wq_multiplier;
 	u8			gsi_ll2_mac_address[ETH_ALEN];
+	int			gsi_qp_created;
+	struct qedr_cq		*gsi_sqcq;
+	struct qedr_cq		*gsi_rqcq;
+	struct qedr_qp		*gsi_qp;
 };
 
 #define QEDR_MAX_SQ_PBL			(0x8000)
@@ -246,6 +251,9 @@ struct qedr_cq {
 
 	u16 icid;
 
+	/* Lock to protect completion handler */
+	spinlock_t comp_handler_lock;
+
 	/* Lock to protect multiplem CQ's */
 	spinlock_t cq_lock;
 	u8 arm_flags;
@@ -292,6 +300,7 @@ struct qedr_qp_hwq_info {
 	u16 prod;
 	u16 cons;
 	u16 wqe_cons;
+	u16 gsi_cons;
 	u16 max_wr;
 
 	/* DB */
@@ -366,6 +375,7 @@ struct qedr_qp {
 		struct ib_sge sg_list[RDMA_MAX_SGE_PER_RQ_WQE];
 		u8 wqe_size;
 
+		u8 smac[ETH_ALEN];
 		u16 vlan_id;
 		int rc;
 	} *rqe_wr_id;
@@ -473,6 +483,11 @@ static inline struct qedr_qp *get_qedr_qp(struct ib_qp *ibqp)
 	return container_of(ibqp, struct qedr_qp, ibqp);
 }
 
+static inline struct qedr_ah *get_qedr_ah(struct ib_ah *ibah)
+{
+	return container_of(ibah, struct qedr_ah, ibah);
+}
+
 static inline struct qedr_mr *get_qedr_mr(struct ib_mr *ibmr)
 {
 	return container_of(ibmr, struct qedr_mr, ibmr);
diff --git a/drivers/infiniband/hw/qedr/qedr_cm.c b/drivers/infiniband/hw/qedr/qedr_cm.c
new file mode 100644
index 0000000..2af1395
--- /dev/null
+++ b/drivers/infiniband/hw/qedr/qedr_cm.c
@@ -0,0 +1,636 @@
+/* QLogic qedr NIC Driver
+ * Copyright (c) 2015-2016  QLogic Corporation
+ *
+ * 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.
+ */
+#include <linux/dma-mapping.h>
+#include <linux/crc32.h>
+#include <linux/iommu.h>
+#include <net/ip.h>
+#include <net/ipv6.h>
+#include <net/udp.h>
+
+#include <rdma/ib_verbs.h>
+#include <rdma/ib_user_verbs.h>
+#include <rdma/iw_cm.h>
+#include <rdma/ib_umem.h>
+#include <rdma/ib_addr.h>
+#include <rdma/ib_cache.h>
+
+#include "qedr_hsi.h"
+#include <linux/qed/qed_if.h>
+#include <linux/qed/qed_roce_if.h>
+#include "qedr.h"
+#include "qedr_hsi.h"
+#include "verbs.h"
+#include <rdma/qedr-abi.h>
+#include "qedr_hsi.h"
+#include "qedr_cm.h"
+
+void qedr_inc_sw_gsi_cons(struct qedr_qp_hwq_info *info)
+{
+	info->gsi_cons = (info->gsi_cons + 1) % info->max_wr;
+}
+
+void qedr_store_gsi_qp_cq(struct qedr_dev *dev, struct qedr_qp *qp,
+			  struct ib_qp_init_attr *attrs)
+{
+	dev->gsi_qp_created = 1;
+	dev->gsi_sqcq = get_qedr_cq(attrs->send_cq);
+	dev->gsi_rqcq = get_qedr_cq(attrs->recv_cq);
+	dev->gsi_qp = qp;
+}
+
+void qedr_ll2_tx_cb(void *_qdev, struct qed_roce_ll2_packet *pkt)
+{
+	struct qedr_dev *dev = (struct qedr_dev *)_qdev;
+	struct qedr_cq *cq = dev->gsi_sqcq;
+	struct qedr_qp *qp = dev->gsi_qp;
+	unsigned long flags;
+
+	DP_DEBUG(dev, QEDR_MSG_GSI,
+		 "LL2 TX CB: gsi_sqcq=%p, gsi_rqcq=%p, gsi_cons=%d, ibcq_comp=%s\n",
+		 dev->gsi_sqcq, dev->gsi_rqcq, qp->sq.gsi_cons,
+		 cq->ibcq.comp_handler ? "Yes" : "No");
+
+	dma_free_coherent(&dev->pdev->dev, pkt->header.len, pkt->header.vaddr,
+			  pkt->header.baddr);
+	kfree(pkt);
+
+	spin_lock_irqsave(&qp->q_lock, flags);
+	qedr_inc_sw_gsi_cons(&qp->sq);
+	spin_unlock_irqrestore(&qp->q_lock, flags);
+
+	if (cq->ibcq.comp_handler) {
+		spin_lock_irqsave(&cq->comp_handler_lock, flags);
+		(*cq->ibcq.comp_handler) (&cq->ibcq, cq->ibcq.cq_context);
+		spin_unlock_irqrestore(&cq->comp_handler_lock, flags);
+	}
+}
+
+static inline void qedr_print_hex_dump(const char *str, void *buf, size_t size)
+{
+	print_hex_dump(KERN_INFO, str, DUMP_PREFIX_OFFSET, 32, 1, buf,
+		       size, false);
+}
+
+void qedr_ll2_rx_cb(void *_dev, struct qed_roce_ll2_packet *pkt,
+		    struct qed_roce_ll2_rx_params *params)
+{
+	struct qedr_dev *dev = (struct qedr_dev *)_dev;
+	struct qedr_cq *cq = dev->gsi_rqcq;
+	struct qedr_qp *qp = dev->gsi_qp;
+	unsigned long flags;
+
+	spin_lock_irqsave(&qp->q_lock, flags);
+
+	qp->rqe_wr_id[qp->rq.gsi_cons].rc = params->rc;
+	qp->rqe_wr_id[qp->rq.gsi_cons].vlan_id = params->vlan_id;
+	qp->rqe_wr_id[qp->rq.gsi_cons].sg_list[0].length = pkt->payload[0].len;
+	ether_addr_copy(qp->rqe_wr_id[qp->rq.gsi_cons].smac, params->smac);
+
+	qedr_inc_sw_gsi_cons(&qp->rq);
+
+	spin_unlock_irqrestore(&qp->q_lock, flags);
+
+	if (cq->ibcq.comp_handler) {
+		spin_lock_irqsave(&cq->comp_handler_lock, flags);
+		(*cq->ibcq.comp_handler) (&cq->ibcq, cq->ibcq.cq_context);
+		spin_unlock_irqrestore(&cq->comp_handler_lock, flags);
+	}
+}
+
+static void qedr_destroy_gsi_cq(struct qedr_dev *dev,
+				struct ib_qp_init_attr *attrs)
+{
+	struct qed_rdma_destroy_cq_in_params iparams;
+	struct qed_rdma_destroy_cq_out_params oparams;
+	struct qedr_cq *cq;
+
+	cq = get_qedr_cq(attrs->send_cq);
+	iparams.icid = cq->icid;
+	dev->ops->rdma_destroy_cq(dev->rdma_ctx, &iparams, &oparams);
+	dev->ops->common->chain_free(dev->cdev, &cq->pbl);
+
+	cq = get_qedr_cq(attrs->recv_cq);
+	/* if a dedicated recv_cq was used, delete it too */
+	if (iparams.icid != cq->icid) {
+		iparams.icid = cq->icid;
+		dev->ops->rdma_destroy_cq(dev->rdma_ctx, &iparams, &oparams);
+		dev->ops->common->chain_free(dev->cdev, &cq->pbl);
+	}
+}
+
+static inline int qedr_check_gsi_qp_attrs(struct qedr_dev *dev,
+					  struct ib_qp_init_attr *attrs)
+{
+	if (attrs->cap.max_recv_sge > QEDR_GSI_MAX_RECV_SGE) {
+		DP_ERR(dev,
+		       " create gsi qp: failed. max_recv_sge is larger the max %d>%d\n",
+		       attrs->cap.max_recv_sge, QEDR_GSI_MAX_RECV_SGE);
+		return -EINVAL;
+	}
+
+	if (attrs->cap.max_recv_wr > QEDR_GSI_MAX_RECV_WR) {
+		DP_ERR(dev,
+		       " create gsi qp: failed. max_recv_wr is too large %d>%d\n",
+		       attrs->cap.max_recv_wr, QEDR_GSI_MAX_RECV_WR);
+		return -EINVAL;
+	}
+
+	if (attrs->cap.max_send_wr > QEDR_GSI_MAX_SEND_WR) {
+		DP_ERR(dev,
+		       " create gsi qp: failed. max_send_wr is too large %d>%d\n",
+		       attrs->cap.max_send_wr, QEDR_GSI_MAX_SEND_WR);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+struct ib_qp *qedr_create_gsi_qp(struct qedr_dev *dev,
+				 struct ib_qp_init_attr *attrs,
+				 struct qedr_qp *qp)
+{
+	struct qed_roce_ll2_params ll2_params;
+	int rc;
+
+	rc = qedr_check_gsi_qp_attrs(dev, attrs);
+	if (rc)
+		return ERR_PTR(rc);
+
+	/* configure and start LL2 */
+	memset(&ll2_params, 0, sizeof(ll2_params));
+	ll2_params.max_tx_buffers = attrs->cap.max_send_wr;
+	ll2_params.max_rx_buffers = attrs->cap.max_recv_wr;
+	ll2_params.cbs.tx_cb = qedr_ll2_tx_cb;
+	ll2_params.cbs.rx_cb = qedr_ll2_rx_cb;
+	ll2_params.cb_cookie = (void *)dev;
+	ll2_params.mtu = dev->ndev->mtu;
+	ether_addr_copy(ll2_params.mac_address, dev->ndev->dev_addr);
+	rc = dev->ops->roce_ll2_start(dev->cdev, &ll2_params);
+	if (rc) {
+		DP_ERR(dev, "create gsi qp: failed on ll2 start. rc=%d\n", rc);
+		return ERR_PTR(rc);
+	}
+
+	/* create QP */
+	qp->ibqp.qp_num = 1;
+	qp->rq.max_wr = attrs->cap.max_recv_wr;
+	qp->sq.max_wr = attrs->cap.max_send_wr;
+
+	qp->rqe_wr_id = kcalloc(qp->rq.max_wr, sizeof(*qp->rqe_wr_id),
+				GFP_KERNEL);
+	if (!qp->rqe_wr_id) {
+		DP_ERR(dev, "create gsi qp: failed on rqe_wr_id allocation\n");
+		goto err;
+	}
+	qp->wqe_wr_id = kcalloc(qp->sq.max_wr, sizeof(*qp->wqe_wr_id),
+				GFP_KERNEL);
+	if (!qp->wqe_wr_id) {
+		DP_ERR(dev, "create gsi qp: failed on wqe_wr_id allocation\n");
+		goto err;
+	}
+
+	qedr_store_gsi_qp_cq(dev, qp, attrs);
+	ether_addr_copy(dev->gsi_ll2_mac_address, dev->ndev->dev_addr);
+
+	/* the GSI CQ is handled by the driver so remove it from the FW */
+	qedr_destroy_gsi_cq(dev, attrs);
+	dev->gsi_rqcq->cq_type = QEDR_CQ_TYPE_GSI;
+	dev->gsi_rqcq->cq_type = QEDR_CQ_TYPE_GSI;
+
+	DP_DEBUG(dev, QEDR_MSG_GSI, "created GSI QP %p\n", qp);
+
+	return &qp->ibqp;
+
+err:
+	kfree(qp->rqe_wr_id);
+
+	rc = dev->ops->roce_ll2_stop(dev->cdev);
+	if (rc)
+		DP_ERR(dev, "create gsi qp: failed destroy on create\n");
+
+	return ERR_PTR(-ENOMEM);
+}
+
+int qedr_destroy_gsi_qp(struct qedr_dev *dev)
+{
+	int rc;
+
+	rc = dev->ops->roce_ll2_stop(dev->cdev);
+	if (rc)
+		DP_ERR(dev, "destroy gsi qp: failed (rc=%d)\n", rc);
+	else
+		DP_DEBUG(dev, QEDR_MSG_GSI, "destroy gsi qp: success\n");
+
+	return rc;
+}
+
+#define QEDR_MAX_UD_HEADER_SIZE	(100)
+#define QEDR_GSI_QPN		(1)
+static inline int qedr_gsi_build_header(struct qedr_dev *dev,
+					struct qedr_qp *qp,
+					struct ib_send_wr *swr,
+					struct ib_ud_header *udh,
+					int *roce_mode)
+{
+	bool has_vlan = false, has_grh_ipv6 = true;
+	struct ib_ah_attr *ah_attr = &get_qedr_ah(ud_wr(swr)->ah)->attr;
+	struct ib_global_route *grh = &ah_attr->grh;
+	union ib_gid sgid;
+	int send_size = 0;
+	u16 vlan_id = 0;
+	u16 ether_type;
+	struct ib_gid_attr sgid_attr;
+	int rc;
+	int ip_ver = 0;
+
+	bool has_udp = false;
+	int i;
+
+	send_size = 0;
+	for (i = 0; i < swr->num_sge; ++i)
+		send_size += swr->sg_list[i].length;
+
+	rc = ib_get_cached_gid(qp->ibqp.device, ah_attr->port_num,
+			       grh->sgid_index, &sgid, &sgid_attr);
+	if (rc) {
+		DP_ERR(dev,
+		       "gsi post send: failed to get cached GID (port=%d, ix=%d)\n",
+		       ah_attr->port_num, grh->sgid_index);
+		return rc;
+	}
+
+	vlan_id = rdma_vlan_dev_vlan_id(sgid_attr.ndev);
+	if (vlan_id < VLAN_CFI_MASK)
+		has_vlan = true;
+	if (sgid_attr.ndev)
+		dev_put(sgid_attr.ndev);
+
+	if (!memcmp(&sgid, &zgid, sizeof(sgid))) {
+		DP_ERR(dev, "gsi post send: GID not found GID index %d\n",
+		       ah_attr->grh.sgid_index);
+		return -ENOENT;
+	}
+
+	has_udp = (sgid_attr.gid_type == IB_GID_TYPE_ROCE_UDP_ENCAP);
+	if (!has_udp) {
+		/* RoCE v1 */
+		ether_type = ETH_P_ROCE;
+		*roce_mode = ROCE_V1;
+	} else if (ipv6_addr_v4mapped((struct in6_addr *)&sgid)) {
+		/* RoCE v2 IPv4 */
+		ip_ver = 4;
+		ether_type = ETH_P_IP;
+		has_grh_ipv6 = false;
+		*roce_mode = ROCE_V2_IPV4;
+	} else {
+		/* RoCE v2 IPv6 */
+		ip_ver = 6;
+		ether_type = ETH_P_IPV6;
+		*roce_mode = ROCE_V2_IPV6;
+	}
+
+	rc = ib_ud_header_init(send_size, false, true, has_vlan,
+			       has_grh_ipv6, ip_ver, has_udp, 0, udh);
+	if (rc) {
+		DP_ERR(dev, "gsi post send: failed to init header\n");
+		return rc;
+	}
+
+	/* ENET + VLAN headers */
+	ether_addr_copy(udh->eth.dmac_h, ah_attr->dmac);
+	ether_addr_copy(udh->eth.smac_h, dev->ndev->dev_addr);
+	if (has_vlan) {
+		udh->eth.type = htons(ETH_P_8021Q);
+		udh->vlan.tag = htons(vlan_id);
+		udh->vlan.type = htons(ether_type);
+	} else {
+		udh->eth.type = htons(ether_type);
+	}
+
+	/* BTH */
+	udh->bth.solicited_event = !!(swr->send_flags & IB_SEND_SOLICITED);
+	udh->bth.pkey = QEDR_ROCE_PKEY_DEFAULT;
+	udh->bth.destination_qpn = htonl(ud_wr(swr)->remote_qpn);
+	udh->bth.psn = htonl((qp->sq_psn++) & ((1 << 24) - 1));
+	udh->bth.opcode = IB_OPCODE_UD_SEND_ONLY;
+
+	/* DETH */
+	udh->deth.qkey = htonl(0x80010000);
+	udh->deth.source_qpn = htonl(QEDR_GSI_QPN);
+
+	if (has_grh_ipv6) {
+		/* GRH / IPv6 header */
+		udh->grh.traffic_class = grh->traffic_class;
+		udh->grh.flow_label = grh->flow_label;
+		udh->grh.hop_limit = grh->hop_limit;
+		udh->grh.destination_gid = grh->dgid;
+		memcpy(&udh->grh.source_gid.raw, &sgid.raw,
+		       sizeof(udh->grh.source_gid.raw));
+	} else {
+		/* IPv4 header */
+		u32 ipv4_addr;
+
+		udh->ip4.protocol = IPPROTO_UDP;
+		udh->ip4.tos = htonl(ah_attr->grh.flow_label);
+		udh->ip4.frag_off = htons(IP_DF);
+		udh->ip4.ttl = ah_attr->grh.hop_limit;
+
+		ipv4_addr = qedr_get_ipv4_from_gid(sgid.raw);
+		udh->ip4.saddr = ipv4_addr;
+		ipv4_addr = qedr_get_ipv4_from_gid(ah_attr->grh.dgid.raw);
+		udh->ip4.daddr = ipv4_addr;
+		/* note: checksum is calculated by the device */
+	}
+
+	/* UDP */
+	if (has_udp) {
+		udh->udp.sport = htons(QEDR_ROCE_V2_UDP_SPORT);
+		udh->udp.dport = htons(ROCE_V2_UDP_DPORT);
+		udh->udp.csum = 0;
+		/* UDP length is untouched hence is zero */
+	}
+	return 0;
+}
+
+static inline int qedr_gsi_build_packet(struct qedr_dev *dev,
+					struct qedr_qp *qp,
+					struct ib_send_wr *swr,
+					struct qed_roce_ll2_packet **p_packet)
+{
+	u8 ud_header_buffer[QEDR_MAX_UD_HEADER_SIZE];
+	struct qed_roce_ll2_packet *packet;
+	struct pci_dev *pdev = dev->pdev;
+	int roce_mode, header_size;
+	struct ib_ud_header udh;
+	int i, rc;
+
+	*p_packet = NULL;
+
+	rc = qedr_gsi_build_header(dev, qp, swr, &udh, &roce_mode);
+	if (rc)
+		return rc;
+
+	header_size = ib_ud_header_pack(&udh, &ud_header_buffer);
+
+	packet = kzalloc(sizeof(*packet), GFP_ATOMIC);
+	if (!packet) {
+		DP_ERR(dev, "gsi post send: failed to allocate packet\n");
+		return -ENOMEM;
+	}
+
+	packet->header.vaddr = dma_alloc_coherent(&pdev->dev, header_size,
+						  &packet->header.baddr,
+						  GFP_ATOMIC);
+	if (!packet->header.vaddr) {
+		DP_ERR(dev,
+		       "cm header build: failed to allocate buffer for header\n");
+		kfree(packet);
+		return -ENOMEM;
+	}
+
+	if (ether_addr_equal(udh.eth.smac_h, udh.eth.dmac_h))
+		packet->tx_dest = QED_ROCE_LL2_TX_DEST_NW;
+	else
+		packet->tx_dest = QED_ROCE_LL2_TX_DEST_LB;
+
+	packet->roce_mode = roce_mode;
+	memcpy(packet->header.vaddr, ud_header_buffer, header_size);
+	packet->header.len = header_size;
+	packet->n_seg = swr->num_sge;
+	for (i = 0; i < packet->n_seg; i++) {
+		packet->payload[i].baddr = swr->sg_list[i].addr;
+		packet->payload[i].len = swr->sg_list[i].length;
+	}
+
+	*p_packet = packet;
+
+	return 0;
+}
+
+int qedr_gsi_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
+		       struct ib_send_wr **bad_wr)
+{
+	struct qed_roce_ll2_packet *pkt = NULL;
+	struct qedr_qp *qp = get_qedr_qp(ibqp);
+	struct qed_roce_ll2_tx_params params;
+	struct qedr_dev *dev = qp->dev;
+	unsigned long flags;
+	int rc;
+
+	if (qp->state != QED_ROCE_QP_STATE_RTS) {
+		*bad_wr = wr;
+		DP_ERR(dev,
+		       "gsi post recv: failed to post rx buffer. state is %d and not QED_ROCE_QP_STATE_RTS\n",
+		       qp->state);
+		return -EINVAL;
+	}
+
+	if (wr->num_sge > RDMA_MAX_SGE_PER_SQ_WQE) {
+		DP_ERR(dev, "gsi post send: num_sge is too large (%d>%d)\n",
+		       wr->num_sge, RDMA_MAX_SGE_PER_SQ_WQE);
+		rc = -EINVAL;
+		goto err;
+	}
+
+	if (wr->opcode != IB_WR_SEND) {
+		DP_ERR(dev,
+		       "gsi post send: failed due to unsupported opcode %d\n",
+		       wr->opcode);
+		rc = -EINVAL;
+		goto err;
+	}
+
+	memset(&params, 0, sizeof(params));
+
+	spin_lock_irqsave(&qp->q_lock, flags);
+
+	rc = qedr_gsi_build_packet(dev, qp, wr, &pkt);
+	if (rc) {
+		spin_unlock_irqrestore(&qp->q_lock, flags);
+		goto err;
+	}
+
+	rc = dev->ops->roce_ll2_tx(dev->cdev, pkt, &params);
+	if (!rc) {
+		qp->wqe_wr_id[qp->sq.prod].wr_id = wr->wr_id;
+		qedr_inc_sw_prod(&qp->sq);
+		DP_DEBUG(qp->dev, QEDR_MSG_GSI,
+			 "gsi post send: opcode=%d, in_irq=%ld, irqs_disabled=%d, wr_id=%llx\n",
+			 wr->opcode, in_irq(), irqs_disabled(), wr->wr_id);
+	} else {
+		if (rc == QED_ROCE_TX_HEAD_FAILURE) {
+			/* TX failed while posting header - release resources */
+			dma_free_coherent(&dev->pdev->dev, pkt->header.len,
+					  pkt->header.vaddr, pkt->header.baddr);
+			kfree(pkt);
+		} else if (rc == QED_ROCE_TX_FRAG_FAILURE) {
+			/* NTD since TX failed while posting a fragment. We will
+			 * release the resources on TX callback
+			 */
+		}
+
+		DP_ERR(dev, "gsi post send: failed to transmit (rc=%d)\n", rc);
+		rc = -EAGAIN;
+		*bad_wr = wr;
+	}
+
+	spin_unlock_irqrestore(&qp->q_lock, flags);
+
+	if (wr->next) {
+		DP_ERR(dev,
+		       "gsi post send: failed second WR. Only one WR may be passed at a time\n");
+		*bad_wr = wr->next;
+		rc = -EINVAL;
+	}
+
+	return rc;
+
+err:
+	*bad_wr = wr;
+	return rc;
+}
+
+int qedr_gsi_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
+		       struct ib_recv_wr **bad_wr)
+{
+	struct qedr_dev *dev = get_qedr_dev(ibqp->device);
+	struct qedr_qp *qp = get_qedr_qp(ibqp);
+	struct qed_roce_ll2_buffer buf;
+	unsigned long flags;
+	int status = 0;
+	int rc;
+
+	if ((qp->state != QED_ROCE_QP_STATE_RTR) &&
+	    (qp->state != QED_ROCE_QP_STATE_RTS)) {
+		*bad_wr = wr;
+		DP_ERR(dev,
+		       "gsi post recv: failed to post rx buffer. state is %d and not QED_ROCE_QP_STATE_RTR/S\n",
+		       qp->state);
+		return -EINVAL;
+	}
+
+	memset(&buf, 0, sizeof(buf));
+
+	spin_lock_irqsave(&qp->q_lock, flags);
+
+	while (wr) {
+		if (wr->num_sge > QEDR_GSI_MAX_RECV_SGE) {
+			DP_ERR(dev,
+			       "gsi post recv: failed to post rx buffer. too many sges %d>%d\n",
+			       wr->num_sge, QEDR_GSI_MAX_RECV_SGE);
+			goto err;
+		}
+
+		buf.baddr = wr->sg_list[0].addr;
+		buf.len = wr->sg_list[0].length;
+
+		rc = dev->ops->roce_ll2_post_rx_buffer(dev->cdev, &buf, 0, 1);
+		if (rc) {
+			DP_ERR(dev,
+			       "gsi post recv: failed to post rx buffer (rc=%d)\n",
+			       rc);
+			goto err;
+		}
+
+		memset(&qp->rqe_wr_id[qp->rq.prod], 0,
+		       sizeof(qp->rqe_wr_id[qp->rq.prod]));
+		qp->rqe_wr_id[qp->rq.prod].sg_list[0] = wr->sg_list[0];
+		qp->rqe_wr_id[qp->rq.prod].wr_id = wr->wr_id;
+
+		qedr_inc_sw_prod(&qp->rq);
+
+		wr = wr->next;
+	}
+
+	spin_unlock_irqrestore(&qp->q_lock, flags);
+
+	return status;
+err:
+	spin_unlock_irqrestore(&qp->q_lock, flags);
+	*bad_wr = wr;
+	return -ENOMEM;
+}
+
+int qedr_gsi_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
+{
+	struct qedr_dev *dev = get_qedr_dev(ibcq->device);
+	struct qedr_cq *cq = get_qedr_cq(ibcq);
+	struct qedr_qp *qp = dev->gsi_qp;
+	unsigned long flags;
+	int i = 0;
+
+	spin_lock_irqsave(&cq->cq_lock, flags);
+
+	while (i < num_entries && qp->rq.cons != qp->rq.gsi_cons) {
+		memset(&wc[i], 0, sizeof(*wc));
+
+		wc[i].qp = &qp->ibqp;
+		wc[i].wr_id = qp->rqe_wr_id[qp->rq.cons].wr_id;
+		wc[i].opcode = IB_WC_RECV;
+		wc[i].pkey_index = 0;
+		wc[i].status = (qp->rqe_wr_id[qp->rq.cons].rc) ?
+		    IB_WC_GENERAL_ERR : IB_WC_SUCCESS;
+		/* 0 - currently only one recv sg is supported */
+		wc[i].byte_len = qp->rqe_wr_id[qp->rq.cons].sg_list[0].length;
+		wc[i].wc_flags |= IB_WC_GRH | IB_WC_IP_CSUM_OK;
+		ether_addr_copy(wc[i].smac, qp->rqe_wr_id[qp->rq.cons].smac);
+		wc[i].wc_flags |= IB_WC_WITH_SMAC;
+		if (qp->rqe_wr_id[qp->rq.cons].vlan_id) {
+			wc[i].wc_flags |= IB_WC_WITH_VLAN;
+			wc[i].vlan_id = qp->rqe_wr_id[qp->rq.cons].vlan_id;
+		}
+
+		qedr_inc_sw_cons(&qp->rq);
+		i++;
+	}
+
+	while (i < num_entries && qp->sq.cons != qp->sq.gsi_cons) {
+		memset(&wc[i], 0, sizeof(*wc));
+
+		wc[i].qp = &qp->ibqp;
+		wc[i].wr_id = qp->wqe_wr_id[qp->sq.cons].wr_id;
+		wc[i].opcode = IB_WC_SEND;
+		wc[i].status = IB_WC_SUCCESS;
+
+		qedr_inc_sw_cons(&qp->sq);
+		i++;
+	}
+
+	spin_unlock_irqrestore(&cq->cq_lock, flags);
+
+	DP_DEBUG(dev, QEDR_MSG_GSI,
+		 "gsi poll_cq: requested entries=%d, actual=%d, qp->rq.cons=%d, qp->rq.gsi_cons=%x, qp->sq.cons=%d, qp->sq.gsi_cons=%d, qp_num=%d\n",
+		 num_entries, i, qp->rq.cons, qp->rq.gsi_cons, qp->sq.cons,
+		 qp->sq.gsi_cons, qp->ibqp.qp_num);
+
+	return i;
+}
diff --git a/drivers/infiniband/hw/qedr/qedr_cm.h b/drivers/infiniband/hw/qedr/qedr_cm.h
index b8a8b76..9ba6e15 100644
--- a/drivers/infiniband/hw/qedr/qedr_cm.h
+++ b/drivers/infiniband/hw/qedr/qedr_cm.h
@@ -32,9 +32,30 @@
 #ifndef LINUX_QEDR_CM_H_
 #define LINUX_QEDR_CM_H_
 
+#define QEDR_GSI_MAX_RECV_WR	(4096)
+#define QEDR_GSI_MAX_SEND_WR	(4096)
+
+#define QEDR_GSI_MAX_RECV_SGE	(1)	/* LL2 FW limitation */
+
+#define ETH_P_ROCE		(0x8915)
+#define QEDR_ROCE_V2_UDP_SPORT	(0000)
+
 static inline u32 qedr_get_ipv4_from_gid(u8 *gid)
 {
 	return *(u32 *)(void *)&gid[12];
 }
 
+/* RDMA CM */
+int qedr_gsi_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
+int qedr_gsi_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
+		       struct ib_recv_wr **bad_wr);
+int qedr_gsi_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
+		       struct ib_send_wr **bad_wr);
+struct ib_qp *qedr_create_gsi_qp(struct qedr_dev *dev,
+				 struct ib_qp_init_attr *attrs,
+				 struct qedr_qp *qp);
+void qedr_store_gsi_qp_cq(struct qedr_dev *dev,
+			  struct qedr_qp *qp, struct ib_qp_init_attr *attrs);
+int qedr_destroy_gsi_qp(struct qedr_dev *dev);
+void qedr_inc_sw_gsi_cons(struct qedr_qp_hwq_info *info);
 #endif
diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c
index cd7c8cd..378eafa 100644
--- a/drivers/infiniband/hw/qedr/verbs.c
+++ b/drivers/infiniband/hw/qedr/verbs.c
@@ -1511,6 +1511,15 @@ struct ib_qp *qedr_create_qp(struct ib_pd *ibpd,
 
 	qedr_set_qp_init_params(dev, qp, pd, attrs);
 
+	if (attrs->qp_type == IB_QPT_GSI) {
+		if (udata) {
+			DP_ERR(dev,
+			       "create qp: unexpected udata when creating GSI QP\n");
+			goto err0;
+		}
+		return qedr_create_gsi_qp(dev, attrs, qp);
+	}
+
 	memset(&in_params, 0, sizeof(in_params));
 
 	if (udata) {
@@ -2077,6 +2086,8 @@ int qedr_destroy_qp(struct ib_qp *ibqp)
 		rc = dev->ops->rdma_destroy_qp(dev->rdma_ctx, qp->qed_qp);
 		if (rc)
 			return rc;
+	} else {
+		qedr_destroy_gsi_qp(dev);
 	}
 
 	if (ibqp->uobject && ibqp->uobject->context) {
@@ -2092,6 +2103,23 @@ int qedr_destroy_qp(struct ib_qp *ibqp)
 	return rc;
 }
 
+struct ib_ah *qedr_create_ah(struct ib_pd *ibpd, struct ib_ah_attr *attr)
+{
+	struct qedr_ah *ah = kzalloc(sizeof(*ah), GFP_ATOMIC);
+
+	ah->attr = *attr;
+
+	return &ah->ibah;
+}
+
+int qedr_destroy_ah(struct ib_ah *ibah)
+{
+	struct qedr_ah *ah = get_qedr_ah(ibah);
+
+	kfree(ah);
+	return 0;
+}
+
 static void free_mr_info(struct qedr_dev *dev, struct mr_info *info)
 {
 	struct qedr_pbl *pbl, *tmp;
@@ -2943,6 +2971,9 @@ int qedr_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
 
 	*bad_wr = NULL;
 
+	if (qp->qp_type == IB_QPT_GSI)
+		return qedr_gsi_post_send(ibqp, wr, bad_wr);
+
 	spin_lock_irqsave(&qp->q_lock, flags);
 
 	if ((qp->state == QED_ROCE_QP_STATE_RESET) ||
@@ -2999,6 +3030,9 @@ int qedr_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
 	unsigned long flags;
 	int status = 0;
 
+	if (qp->qp_type == IB_QPT_GSI)
+		return qedr_gsi_post_recv(ibqp, wr, bad_wr);
+
 	spin_lock_irqsave(&qp->q_lock, flags);
 
 	if ((qp->state == QED_ROCE_QP_STATE_RESET) ||
@@ -3425,6 +3459,9 @@ int qedr_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
 	int update = 0;
 	int done = 0;
 
+	if (cq->cq_type == QEDR_CQ_TYPE_GSI)
+		return qedr_gsi_poll_cq(ibcq, num_entries, wc);
+
 	spin_lock_irqsave(&cq->cq_lock, flags);
 	old_cons = qed_chain_get_cons_idx_u32(&cq->pbl);
 	while (num_entries && is_valid_cqe(cq, cqe)) {
-- 
1.8.3.1

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[PATCH qedr 10/10] qedr: Add events support and register IB device

[Ram Amrani]

Add error handling support.
Register ib device with ib stack.

Signed-off-by: Rajesh Borundia <rajesh.borundia-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
Signed-off-by: Ram Amrani <Ram.Amrani-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
---
 drivers/infiniband/hw/qedr/main.c  | 113 ++++++++++++++++++++++++++++++++++++-
 drivers/infiniband/hw/qedr/verbs.c |  37 ++++++++++++
 drivers/infiniband/hw/qedr/verbs.h |   9 +++
 3 files changed, 157 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/qedr/main.c b/drivers/infiniband/hw/qedr/main.c
index 306a393..2e12c19 100644
--- a/drivers/infiniband/hw/qedr/main.c
+++ b/drivers/infiniband/hw/qedr/main.c
@@ -79,10 +79,25 @@ static void qedr_get_dev_fw_str(struct ib_device *ibdev, char *str,
 		 (fw_ver >> 8) & 0xFF, fw_ver & 0xFF);
 }
 
+static struct net_device *qedr_get_netdev(struct ib_device *dev, u8 port_num)
+{
+	struct qedr_dev *qdev;
+
+	qdev = get_qedr_dev(dev);
+	dev_hold(qdev->ndev);
+
+	/* The HW vendor's device driver must guarantee
+	 * that this function returns NULL before the net device reaches
+	 * NETDEV_UNREGISTER_FINAL state.
+	 */
+	return qdev->ndev;
+}
+
 static int qedr_register_device(struct qedr_dev *dev)
 {
 	strlcpy(dev->ibdev.name, "qedr%d", IB_DEVICE_NAME_MAX);
 
+	dev->ibdev.node_guid = dev->attr.node_guid;
 	memcpy(dev->ibdev.node_desc, QEDR_NODE_DESC, sizeof(QEDR_NODE_DESC));
 	dev->ibdev.owner = THIS_MODULE;
 	dev->ibdev.uverbs_abi_ver = QEDR_ABI_VERSION;
@@ -151,12 +166,16 @@ static int qedr_register_device(struct qedr_dev *dev)
 	dev->ibdev.post_send = qedr_post_send;
 	dev->ibdev.post_recv = qedr_post_recv;
 
+	dev->ibdev.process_mad = qedr_process_mad;
+	dev->ibdev.get_port_immutable = qedr_port_immutable;
+	dev->ibdev.get_netdev = qedr_get_netdev;
+
 	dev->ibdev.dma_device = &dev->pdev->dev;
 
 	dev->ibdev.get_link_layer = qedr_link_layer;
 	dev->ibdev.get_dev_fw_str = qedr_get_dev_fw_str;
 
-	return 0;
+	return ib_register_device(&dev->ibdev, NULL);
 }
 
 /* This function allocates fast-path status block memory */
@@ -554,6 +573,91 @@ static int qedr_set_device_attr(struct qedr_dev *dev)
 
 	return 0;
 }
+void qedr_unaffiliated_event(void *context,
+			     u8 event_code)
+{
+	pr_err("unaffiliated event not implemented yet\n");
+}
+
+void qedr_affiliated_event(void *context, u8 e_code, void *fw_handle)
+{
+#define EVENT_TYPE_NOT_DEFINED	0
+#define EVENT_TYPE_CQ		1
+#define EVENT_TYPE_QP		2
+	struct qedr_dev *dev = (struct qedr_dev *)context;
+	union event_ring_data *data = fw_handle;
+	u64 roce_handle64 = ((u64)data->roce_handle.hi << 32) +
+			    data->roce_handle.lo;
+	u8 event_type = EVENT_TYPE_NOT_DEFINED;
+	struct ib_event event;
+	struct ib_cq *ibcq;
+	struct ib_qp *ibqp;
+	struct qedr_cq *cq;
+	struct qedr_qp *qp;
+
+	switch (e_code) {
+	case ROCE_ASYNC_EVENT_CQ_OVERFLOW_ERR:
+		event.event = IB_EVENT_CQ_ERR;
+		event_type = EVENT_TYPE_CQ;
+		break;
+	case ROCE_ASYNC_EVENT_SQ_DRAINED:
+		event.event = IB_EVENT_SQ_DRAINED;
+		event_type = EVENT_TYPE_QP;
+		break;
+	case ROCE_ASYNC_EVENT_QP_CATASTROPHIC_ERR:
+		event.event = IB_EVENT_QP_FATAL;
+		event_type = EVENT_TYPE_QP;
+		break;
+	case ROCE_ASYNC_EVENT_LOCAL_INVALID_REQUEST_ERR:
+		event.event = IB_EVENT_QP_REQ_ERR;
+		event_type = EVENT_TYPE_QP;
+		break;
+	case ROCE_ASYNC_EVENT_LOCAL_ACCESS_ERR:
+		event.event = IB_EVENT_QP_ACCESS_ERR;
+		event_type = EVENT_TYPE_QP;
+		break;
+	default:
+		DP_ERR(dev, "unsupported event %d on handle=%llx\n", e_code,
+		       roce_handle64);
+	}
+
+	switch (event_type) {
+	case EVENT_TYPE_CQ:
+		cq = (struct qedr_cq *)(uintptr_t)roce_handle64;
+		if (cq) {
+			ibcq = &cq->ibcq;
+			if (ibcq->event_handler) {
+				event.device = ibcq->device;
+				event.element.cq = ibcq;
+				ibcq->event_handler(&event, ibcq->cq_context);
+			}
+		} else {
+			WARN(1,
+			     "Error: CQ event with NULL pointer ibcq. Handle=%llx\n",
+			     roce_handle64);
+		}
+		DP_ERR(dev, "CQ event %d on hanlde %p\n", e_code, cq);
+		break;
+	case EVENT_TYPE_QP:
+		qp = (struct qedr_qp *)(uintptr_t)roce_handle64;
+		if (qp) {
+			ibqp = &qp->ibqp;
+			if (ibqp->event_handler) {
+				event.device = ibqp->device;
+				event.element.qp = ibqp;
+				ibqp->event_handler(&event, ibqp->qp_context);
+			}
+		} else {
+			WARN(1,
+			     "Error: QP event with NULL pointer ibqp. Handle=%llx\n",
+			     roce_handle64);
+		}
+		DP_ERR(dev, "QP event %d on hanlde %p\n", e_code, qp);
+		break;
+	default:
+		break;
+	}
+}
 
 static int qedr_init_hw(struct qedr_dev *dev)
 {
@@ -583,6 +687,8 @@ static int qedr_init_hw(struct qedr_dev *dev)
 		cur_pbl->pbl_ptr = (u64)p_phys_table;
 	}
 
+	events.affiliated_event = qedr_affiliated_event;
+	events.unaffiliated_event = qedr_unaffiliated_event;
 	events.context = dev;
 
 	in_params->events = &events;
@@ -681,11 +787,13 @@ static struct qedr_dev *qedr_add(struct qed_dev *cdev, struct pci_dev *pdev,
 
 	for (i = 0; i < ARRAY_SIZE(qedr_attributes); i++)
 		if (device_create_file(&dev->ibdev.dev, qedr_attributes[i]))
-			goto reg_err;
+			goto sysfs_err;
 
 	DP_DEBUG(dev, QEDR_MSG_INIT, "qedr driver loaded successfully\n");
 	return dev;
 
+sysfs_err:
+	ib_unregister_device(&dev->ibdev);
 reg_err:
 	qedr_sync_free_irqs(dev);
 irq_err:
@@ -705,6 +813,7 @@ static void qedr_remove(struct qedr_dev *dev)
 	 * of the registered clients.
 	 */
 	qedr_remove_sysfiles(dev);
+	ib_unregister_device(&dev->ibdev);
 
 	qedr_stop_hw(dev);
 	qedr_sync_free_irqs(dev);
diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c
index 378eafa..2bf6440 100644
--- a/drivers/infiniband/hw/qedr/verbs.c
+++ b/drivers/infiniband/hw/qedr/verbs.c
@@ -3513,3 +3513,40 @@ int qedr_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
 	spin_unlock_irqrestore(&cq->cq_lock, flags);
 	return done;
 }
+
+int qedr_process_mad(struct ib_device *ibdev, int process_mad_flags,
+		     u8 port_num,
+		     const struct ib_wc *in_wc,
+		     const struct ib_grh *in_grh,
+		     const struct ib_mad_hdr *mad_hdr,
+		     size_t in_mad_size, struct ib_mad_hdr *out_mad,
+		     size_t *out_mad_size, u16 *out_mad_pkey_index)
+{
+	struct qedr_dev *dev = get_qedr_dev(ibdev);
+
+	DP_DEBUG(dev, QEDR_MSG_GSI,
+		 "QEDR_PROCESS_MAD in_mad %x %x %x %x %x %x %x %x\n",
+		 mad_hdr->attr_id, mad_hdr->base_version, mad_hdr->attr_mod,
+		 mad_hdr->class_specific, mad_hdr->class_version,
+		 mad_hdr->method, mad_hdr->mgmt_class, mad_hdr->status);
+	return IB_MAD_RESULT_SUCCESS;
+}
+
+int qedr_port_immutable(struct ib_device *ibdev, u8 port_num,
+			struct ib_port_immutable *immutable)
+{
+	struct ib_port_attr attr;
+	int err;
+
+	err = qedr_query_port(ibdev, port_num, &attr);
+	if (err)
+		return err;
+
+	immutable->pkey_tbl_len = attr.pkey_tbl_len;
+	immutable->gid_tbl_len = attr.gid_tbl_len;
+	immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE |
+				    RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP;
+	immutable->max_mad_size = IB_MGMT_MAD_SIZE;
+
+	return 0;
+}
diff --git a/drivers/infiniband/hw/qedr/verbs.h b/drivers/infiniband/hw/qedr/verbs.h
index fbc6db5..a9b5e67 100644
--- a/drivers/infiniband/hw/qedr/verbs.h
+++ b/drivers/infiniband/hw/qedr/verbs.h
@@ -89,4 +89,13 @@ int qedr_post_send(struct ib_qp *, struct ib_send_wr *,
 		   struct ib_send_wr **bad_wr);
 int qedr_post_recv(struct ib_qp *, struct ib_recv_wr *,
 		   struct ib_recv_wr **bad_wr);
+int qedr_process_mad(struct ib_device *ibdev, int process_mad_flags,
+		     u8 port_num, const struct ib_wc *in_wc,
+		     const struct ib_grh *in_grh,
+		     const struct ib_mad_hdr *in_mad,
+		     size_t in_mad_size, struct ib_mad_hdr *out_mad,
+		     size_t *out_mad_size, u16 *out_mad_pkey_index);
+
+int qedr_port_immutable(struct ib_device *ibdev, u8 port_num,
+			struct ib_port_immutable *immutable);
 #endif
-- 
1.8.3.1

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Re: [PATCH qedr 04/10] qedr: Add support for PD,PKEY and CQ verbs

[Leon Romanovsky]

[-- Attachment #1: Type: text/plain, Size: 27849 bytes --]

On Wed, Oct 05, 2016 at 06:47:57PM +0300, Ram Amrani wrote:
> Add support for protection domain and completion queue verbs.
>
> Signed-off-by: Rajesh Borundia <rajesh.borundia-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
> Signed-off-by: Ram Amrani <Ram.Amrani-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
> ---
>  drivers/infiniband/hw/qedr/main.c          |  48 ++-
>  drivers/infiniband/hw/qedr/qedr.h          |  78 +++++
>  drivers/infiniband/hw/qedr/qedr_hsi_rdma.h |  79 +++++
>  drivers/infiniband/hw/qedr/verbs.c         | 543 +++++++++++++++++++++++++++++
>  drivers/infiniband/hw/qedr/verbs.h         |  14 +
>  include/uapi/rdma/qedr-abi.h               |  19 +
>  6 files changed, 780 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/infiniband/hw/qedr/main.c b/drivers/infiniband/hw/qedr/main.c
> index 7c6d8a7..dc7f072 100644
> --- a/drivers/infiniband/hw/qedr/main.c
> +++ b/drivers/infiniband/hw/qedr/main.c
> @@ -87,7 +87,14 @@ static int qedr_register_device(struct qedr_dev *dev)
>
>  	dev->ibdev.uverbs_cmd_mask = QEDR_UVERBS(GET_CONTEXT) |
>  				     QEDR_UVERBS(QUERY_DEVICE) |
> -				     QEDR_UVERBS(QUERY_PORT);
> +				     QEDR_UVERBS(QUERY_PORT) |
> +				     QEDR_UVERBS(ALLOC_PD) |
> +				     QEDR_UVERBS(DEALLOC_PD) |
> +				     QEDR_UVERBS(CREATE_COMP_CHANNEL) |
> +				     QEDR_UVERBS(CREATE_CQ) |
> +				     QEDR_UVERBS(RESIZE_CQ) |
> +				     QEDR_UVERBS(DESTROY_CQ) |
> +				     QEDR_UVERBS(REQ_NOTIFY_CQ);
>
>  	dev->ibdev.phys_port_cnt = 1;
>  	dev->ibdev.num_comp_vectors = dev->num_cnq;
> @@ -105,6 +112,16 @@ static int qedr_register_device(struct qedr_dev *dev)
>  	dev->ibdev.dealloc_ucontext = qedr_dealloc_ucontext;
>  	dev->ibdev.mmap = qedr_mmap;
>
> +	dev->ibdev.alloc_pd = qedr_alloc_pd;
> +	dev->ibdev.dealloc_pd = qedr_dealloc_pd;
> +
> +	dev->ibdev.create_cq = qedr_create_cq;
> +	dev->ibdev.destroy_cq = qedr_destroy_cq;
> +	dev->ibdev.resize_cq = qedr_resize_cq;
> +	dev->ibdev.req_notify_cq = qedr_arm_cq;
> +
> +	dev->ibdev.query_pkey = qedr_query_pkey;
> +
>  	dev->ibdev.dma_device = &dev->pdev->dev;
>
>  	dev->ibdev.get_link_layer = qedr_link_layer;
> @@ -324,6 +341,8 @@ static irqreturn_t qedr_irq_handler(int irq, void *handle)
>  {
>  	u16 hw_comp_cons, sw_comp_cons;
>  	struct qedr_cnq *cnq = handle;
> +	struct regpair *cq_handle;
> +	struct qedr_cq *cq;
>
>  	qed_sb_ack(cnq->sb, IGU_INT_DISABLE, 0);
>
> @@ -336,7 +355,34 @@ static irqreturn_t qedr_irq_handler(int irq, void *handle)
>  	rmb();
>
>  	while (sw_comp_cons != hw_comp_cons) {
> +		cq_handle = (struct regpair *)qed_chain_consume(&cnq->pbl);
> +		cq = (struct qedr_cq *)(uintptr_t)HILO_U64(cq_handle->hi,
> +				cq_handle->lo);
> +
> +		if (cq == NULL) {
> +			DP_ERR(cnq->dev,
> +			       "Received NULL CQ cq_handle->hi=%d cq_handle->lo=%d sw_comp_cons=%d hw_comp_cons=%d\n",
> +			       cq_handle->hi, cq_handle->lo, sw_comp_cons,
> +			       hw_comp_cons);
> +
> +			break;
> +		}
> +
> +		if (cq->sig != QEDR_CQ_MAGIC_NUMBER) {
> +			DP_ERR(cnq->dev,
> +			       "Problem with cq signature, cq_handle->hi=%d ch_handle->lo=%d cq=%p\n",
> +			       cq_handle->hi, cq_handle->lo, cq);
> +			break;
> +		}
> +
> +		cq->arm_flags = 0;
> +
> +		if (cq->ibcq.comp_handler)
> +			(*cq->ibcq.comp_handler)
> +				(&cq->ibcq, cq->ibcq.cq_context);
> +
>  		sw_comp_cons = qed_chain_get_cons_idx(&cnq->pbl);
> +
>  		cnq->n_comp++;
>  	}
>
> diff --git a/drivers/infiniband/hw/qedr/qedr.h b/drivers/infiniband/hw/qedr/qedr.h
> index 2091c0d..557b9e0 100644
> --- a/drivers/infiniband/hw/qedr/qedr.h
> +++ b/drivers/infiniband/hw/qedr/qedr.h
> @@ -50,6 +50,10 @@
>
>  #define QEDR_MSG_INIT "INIT"
>  #define QEDR_MSG_MISC "MISC"
> +#define QEDR_MSG_CQ   "  CQ"
> +#define QEDR_MSG_MR   "  MR"
> +
> +#define QEDR_CQ_MAGIC_NUMBER   (0x11223344)
>
>  struct qedr_dev;
>
> @@ -181,6 +185,12 @@ struct qedr_dev {
>  #define QEDR_ROCE_PKEY_TABLE_LEN 1
>  #define QEDR_ROCE_PKEY_DEFAULT 0xffff
>
> +struct qedr_pbl {
> +	struct list_head list_entry;
> +	void *va;
> +	dma_addr_t pa;
> +};
> +
>  struct qedr_ucontext {
>  	struct ib_ucontext ibucontext;
>  	struct qedr_dev *dev;
> @@ -196,6 +206,64 @@ struct qedr_ucontext {
>  	struct mutex mm_list_lock;
>  };
>
> +union db_prod64 {
> +	struct rdma_pwm_val32_data data;
> +	u64 raw;
> +};
> +
> +enum qedr_cq_type {
> +	QEDR_CQ_TYPE_GSI,
> +	QEDR_CQ_TYPE_KERNEL,
> +	QEDR_CQ_TYPE_USER
> +};
> +
> +struct qedr_pbl_info {
> +	u32 num_pbls;
> +	u32 num_pbes;
> +	u32 pbl_size;
> +	u32 pbe_size;
> +	bool two_layered;
> +};
> +
> +struct qedr_userq {
> +	struct ib_umem *umem;
> +	struct qedr_pbl_info pbl_info;
> +	struct qedr_pbl *pbl_tbl;
> +	u64 buf_addr;
> +	size_t buf_len;
> +};
> +
> +struct qedr_cq {
> +	struct ib_cq ibcq;
> +
> +	enum qedr_cq_type cq_type;
> +	u32 sig;
> +
> +	u16 icid;
> +
> +	/* Lock to protect multiplem CQ's */
> +	spinlock_t cq_lock;
> +	u8 arm_flags;
> +	struct qed_chain pbl;
> +
> +	void __iomem *db_addr;
> +	union db_prod64 db;
> +
> +	u8 pbl_toggle;
> +	union rdma_cqe *latest_cqe;
> +	union rdma_cqe *toggle_cqe;
> +
> +	u32 cq_cons;
> +
> +	struct qedr_userq q;
> +};
> +
> +struct qedr_pd {
> +	struct ib_pd ibpd;
> +	u32 pd_id;
> +	struct qedr_ucontext *uctx;
> +};
> +
>  struct qedr_mm {
>  	struct {
>  		u64 phy_addr;
> @@ -215,4 +283,14 @@ static inline struct qedr_dev *get_qedr_dev(struct ib_device *ibdev)
>  	return container_of(ibdev, struct qedr_dev, ibdev);
>  }
>
> +static inline struct qedr_pd *get_qedr_pd(struct ib_pd *ibpd)
> +{
> +	return container_of(ibpd, struct qedr_pd, ibpd);
> +}
> +
> +static inline struct qedr_cq *get_qedr_cq(struct ib_cq *ibcq)
> +{
> +	return container_of(ibcq, struct qedr_cq, ibcq);
> +}
> +
>  #endif
> diff --git a/drivers/infiniband/hw/qedr/qedr_hsi_rdma.h b/drivers/infiniband/hw/qedr/qedr_hsi_rdma.h
> index 3e508fb..84f6520 100644
> --- a/drivers/infiniband/hw/qedr/qedr_hsi_rdma.h
> +++ b/drivers/infiniband/hw/qedr/qedr_hsi_rdma.h
> @@ -47,6 +47,19 @@ struct rdma_cqe_responder {
>  	__le32 imm_data_hi;
>  	__le16 rq_cons;
>  	u8 flags;
> +#define RDMA_CQE_RESPONDER_TOGGLE_BIT_MASK  0x1
> +#define RDMA_CQE_RESPONDER_TOGGLE_BIT_SHIFT 0
> +#define RDMA_CQE_RESPONDER_TYPE_MASK        0x3
> +#define RDMA_CQE_RESPONDER_TYPE_SHIFT       1
> +#define RDMA_CQE_RESPONDER_INV_FLG_MASK     0x1
> +#define RDMA_CQE_RESPONDER_INV_FLG_SHIFT    3
> +#define RDMA_CQE_RESPONDER_IMM_FLG_MASK     0x1
> +#define RDMA_CQE_RESPONDER_IMM_FLG_SHIFT    4
> +#define RDMA_CQE_RESPONDER_RDMA_FLG_MASK    0x1
> +#define RDMA_CQE_RESPONDER_RDMA_FLG_SHIFT   5
> +#define RDMA_CQE_RESPONDER_RESERVED2_MASK   0x3
> +#define RDMA_CQE_RESPONDER_RESERVED2_SHIFT  6
> +	u8 status;
>  };
>
>  struct rdma_cqe_requester {
> @@ -58,6 +71,12 @@ struct rdma_cqe_requester {
>  	__le32 reserved3;
>  	__le16 reserved4;
>  	u8 flags;
> +#define RDMA_CQE_REQUESTER_TOGGLE_BIT_MASK  0x1
> +#define RDMA_CQE_REQUESTER_TOGGLE_BIT_SHIFT 0
> +#define RDMA_CQE_REQUESTER_TYPE_MASK        0x3
> +#define RDMA_CQE_REQUESTER_TYPE_SHIFT       1
> +#define RDMA_CQE_REQUESTER_RESERVED5_MASK   0x1F
> +#define RDMA_CQE_REQUESTER_RESERVED5_SHIFT  3
>  	u8 status;
>  };
>
> @@ -66,6 +85,12 @@ struct rdma_cqe_common {
>  	struct regpair qp_handle;
>  	__le16 reserved1[7];
>  	u8 flags;
> +#define RDMA_CQE_COMMON_TOGGLE_BIT_MASK  0x1
> +#define RDMA_CQE_COMMON_TOGGLE_BIT_SHIFT 0
> +#define RDMA_CQE_COMMON_TYPE_MASK        0x3
> +#define RDMA_CQE_COMMON_TYPE_SHIFT       1
> +#define RDMA_CQE_COMMON_RESERVED2_MASK   0x1F
> +#define RDMA_CQE_COMMON_RESERVED2_SHIFT  3
>  	u8 status;

It is VERY uncommon to mix defines and structs together.
Please don't do it, it confuses a lot and doesn't help to
readability/debug.

>  };
>
> @@ -76,6 +101,45 @@ union rdma_cqe {
>  	struct rdma_cqe_common cmn;
>  };
>
> +/* * CQE requester status enumeration */
> +enum rdma_cqe_requester_status_enum {
> +	RDMA_CQE_REQ_STS_OK,
> +	RDMA_CQE_REQ_STS_BAD_RESPONSE_ERR,
> +	RDMA_CQE_REQ_STS_LOCAL_LENGTH_ERR,
> +	RDMA_CQE_REQ_STS_LOCAL_QP_OPERATION_ERR,
> +	RDMA_CQE_REQ_STS_LOCAL_PROTECTION_ERR,
> +	RDMA_CQE_REQ_STS_MEMORY_MGT_OPERATION_ERR,
> +	RDMA_CQE_REQ_STS_REMOTE_INVALID_REQUEST_ERR,
> +	RDMA_CQE_REQ_STS_REMOTE_ACCESS_ERR,
> +	RDMA_CQE_REQ_STS_REMOTE_OPERATION_ERR,
> +	RDMA_CQE_REQ_STS_RNR_NAK_RETRY_CNT_ERR,
> +	RDMA_CQE_REQ_STS_TRANSPORT_RETRY_CNT_ERR,
> +	RDMA_CQE_REQ_STS_WORK_REQUEST_FLUSHED_ERR,
> +	MAX_RDMA_CQE_REQUESTER_STATUS_ENUM

Please add "," at the last line of enums, it will allow future changes
to these enums with minimal churn.

> +};
> +
> +/* CQE responder status enumeration */
> +enum rdma_cqe_responder_status_enum {
> +	RDMA_CQE_RESP_STS_OK,
> +	RDMA_CQE_RESP_STS_LOCAL_ACCESS_ERR,
> +	RDMA_CQE_RESP_STS_LOCAL_LENGTH_ERR,
> +	RDMA_CQE_RESP_STS_LOCAL_QP_OPERATION_ERR,
> +	RDMA_CQE_RESP_STS_LOCAL_PROTECTION_ERR,
> +	RDMA_CQE_RESP_STS_MEMORY_MGT_OPERATION_ERR,
> +	RDMA_CQE_RESP_STS_REMOTE_INVALID_REQUEST_ERR,
> +	RDMA_CQE_RESP_STS_WORK_REQUEST_FLUSHED_ERR,
> +	MAX_RDMA_CQE_RESPONDER_STATUS_ENUM
> +};
> +
> +/* CQE type enumeration */
> +enum rdma_cqe_type {
> +	RDMA_CQE_TYPE_REQUESTER,
> +	RDMA_CQE_TYPE_RESPONDER_RQ,
> +	RDMA_CQE_TYPE_RESPONDER_SRQ,
> +	RDMA_CQE_TYPE_INVALID,
> +	MAX_RDMA_CQE_TYPE
> +};
> +
>  struct rdma_sq_sge {
>  	__le32 length;
>  	struct regpair	addr;
> @@ -93,4 +157,19 @@ struct rdma_srq_sge {
>  	__le32 length;
>  	__le32 l_key;
>  };
> +
> +/* Rdma doorbell data for CQ */
> +struct rdma_pwm_val32_data {
> +	__le16 icid;
> +	u8 agg_flags;
> +	u8 params;
> +#define RDMA_PWM_VAL32_DATA_AGG_CMD_MASK    0x3
> +#define RDMA_PWM_VAL32_DATA_AGG_CMD_SHIFT   0
> +#define RDMA_PWM_VAL32_DATA_BYPASS_EN_MASK  0x1
> +#define RDMA_PWM_VAL32_DATA_BYPASS_EN_SHIFT 2
> +#define RDMA_PWM_VAL32_DATA_RESERVED_MASK   0x1F
> +#define RDMA_PWM_VAL32_DATA_RESERVED_SHIFT  3
> +	__le32 value;
> +};
> +
>  #endif /* __QED_HSI_RDMA__ */
> diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c
> index ab5f11a..bff4ece 100644
> --- a/drivers/infiniband/hw/qedr/verbs.c
> +++ b/drivers/infiniband/hw/qedr/verbs.c
> @@ -49,6 +49,17 @@
>  #include "verbs.h"
>  #include <rdma/qedr-abi.h>
>
> +#define DB_ADDR_SHIFT(addr)		((addr) << DB_PWM_ADDR_OFFSET_SHIFT)
> +
> +int qedr_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
> +{
> +	if (index > QEDR_ROCE_PKEY_TABLE_LEN)
> +		return -EINVAL;
> +
> +	*pkey = QEDR_ROCE_PKEY_DEFAULT;
> +	return 0;
> +}
> +
>  int qedr_query_gid(struct ib_device *ibdev, u8 port, int index,
>  		   union ib_gid *sgid)
>  {
> @@ -453,3 +464,535 @@ int qedr_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
>  	DP_DEBUG(dev, QEDR_MSG_INIT, "qedr_mmap return code: %d\n", rc);
>  	return rc;
>  }
> +
> +struct ib_pd *qedr_alloc_pd(struct ib_device *ibdev,
> +			    struct ib_ucontext *context, struct ib_udata *udata)
> +{
> +	struct qedr_dev *dev = get_qedr_dev(ibdev);
> +	struct qedr_ucontext *uctx = NULL;
> +	struct qedr_alloc_pd_uresp uresp;
> +	struct qedr_pd *pd;
> +	u16 pd_id;
> +	int rc;
> +
> +	DP_DEBUG(dev, QEDR_MSG_INIT, "Function called from: %s\n",
> +		 (udata && context) ? "User Lib" : "Kernel");
> +	if (udata && context)
> +		uctx = get_qedr_ucontext(context);
> +
> +	pd = kzalloc(sizeof(*pd), GFP_KERNEL);
> +	if (!pd) {
> +		DP_ERR(dev, "failed to alloce PD\n");
> +		return ERR_PTR(-ENOMEM);
> +	}
> +
> +	if (!dev->rdma_ctx) {
> +		DP_ERR(dev, "invlaid RDMA context\n");
> +		return ERR_PTR(-EINVAL);

Don't you want to free pd which was allocated a couple of lines before?

> +	}
> +
> +	dev->ops->rdma_alloc_pd(dev->rdma_ctx, &pd_id);
> +
> +	uresp.pd_id = pd_id;
> +	pd->pd_id = pd_id;
> +
> +	if (uctx) {
> +		rc = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
> +		if (rc)
> +			DP_ERR(dev, "copy error pd_id=0x%x.\n", pd_id);
> +		uctx->pd = pd;
> +		pd->uctx = uctx;
> +	}
> +
> +	return &pd->ibpd;
> +}
> +
> +int qedr_dealloc_pd(struct ib_pd *ibpd)
> +{
> +	struct qedr_dev *dev = get_qedr_dev(ibpd->device);
> +	struct qedr_pd *pd = get_qedr_pd(ibpd);
> +
> +	if (!pd)
> +		pr_err("Invalid PD received in dealloc_pd\n");
> +
> +	DP_DEBUG(dev, QEDR_MSG_INIT, "Deallocating PD %d\n", pd->pd_id);
> +	dev->ops->rdma_dealloc_pd(dev->rdma_ctx, pd->pd_id);
> +
> +	kfree(pd);
> +
> +	return 0;
> +}
> +
> +static void qedr_free_pbl(struct qedr_dev *dev,
> +			  struct qedr_pbl_info *pbl_info, struct qedr_pbl *pbl)
> +{
> +	struct pci_dev *pdev = dev->pdev;
> +	int i;
> +
> +	for (i = 0; i < pbl_info->num_pbls; i++) {
> +		if (!pbl[i].va)
> +			continue;
> +		dma_free_coherent(&pdev->dev, pbl_info->pbl_size,
> +				  pbl[i].va, pbl[i].pa);
> +	}
> +
> +	kfree(pbl);
> +}
> +
> +#define MIN_FW_PBL_PAGE_SIZE (4 * 1024)
> +#define MAX_FW_PBL_PAGE_SIZE (64 * 1024)
> +
> +#define NUM_PBES_ON_PAGE(_page_size) (_page_size / sizeof(u64))
> +#define MAX_PBES_ON_PAGE NUM_PBES_ON_PAGE(MAX_FW_PBL_PAGE_SIZE)
> +#define MAX_PBES_TWO_LAYER (MAX_PBES_ON_PAGE * MAX_PBES_ON_PAGE)
> +
> +static struct qedr_pbl *qedr_alloc_pbl_tbl(struct qedr_dev *dev,
> +					   struct qedr_pbl_info *pbl_info,
> +					   gfp_t flags)
> +{
> +	struct pci_dev *pdev = dev->pdev;
> +	struct qedr_pbl *pbl_table;
> +	dma_addr_t *pbl_main_tbl;
> +	dma_addr_t pa;
> +	int rc = 0;
> +	void *va;
> +	int i;
> +
> +	pbl_table = kcalloc(pbl_info->num_pbls, sizeof(*pbl_table), flags);
> +
> +	if (!pbl_table) {
> +		DP_ERR(dev, "pbl table is NULL\n");

No, there is no need to print this error, kcalloc will print it for you.

> +		return NULL;

??? return ERR_PTR(-ENOMEM) ????

> +	}
> +
> +	for (i = 0; i < pbl_info->num_pbls; i++) {
> +		va = dma_alloc_coherent(&pdev->dev, pbl_info->pbl_size,
> +					&pa, flags);
> +		if (!va) {
> +			DP_ERR(dev, "Failed to allocate pbl#%d\n", i);
> +			rc = -ENOMEM;
> +			goto err;
> +		}
> +		memset(va, 0, pbl_info->pbl_size);
> +		pbl_table[i].va = va;
> +		pbl_table[i].pa = pa;
> +	}
> +
> +	/* Two-Layer PBLs, if we have more than one pbl we need to initialize
> +	 * the first one with physical pointers to all of the rest
> +	 */
> +	pbl_main_tbl = (dma_addr_t *)pbl_table[0].va;
> +	for (i = 0; i < pbl_info->num_pbls - 1; i++)
> +		pbl_main_tbl[i] = pbl_table[i + 1].pa;
> +
> +	return pbl_table;
> +
> +err:
> +	qedr_free_pbl(dev, pbl_info, pbl_table);
> +	return NULL;
> +}
> +
> +static int qedr_prepare_pbl_tbl(struct qedr_dev *dev,
> +				struct qedr_pbl_info *pbl_info,
> +				u32 num_pbes, int two_layer_capable)
> +{
> +	u32 pbl_capacity;
> +	u32 pbl_size;
> +	u32 num_pbls;
> +
> +	if ((num_pbes > MAX_PBES_ON_PAGE) && two_layer_capable) {
> +		if (num_pbes > MAX_PBES_TWO_LAYER) {
> +			DP_ERR(dev, "prepare pbl table: too many pages %d\n",
> +			       num_pbes);
> +			return -EINVAL;
> +		}
> +
> +		/* calculate required pbl page size */
> +		pbl_size = MIN_FW_PBL_PAGE_SIZE;
> +		pbl_capacity = NUM_PBES_ON_PAGE(pbl_size) *
> +			       NUM_PBES_ON_PAGE(pbl_size);
> +
> +		while (pbl_capacity < num_pbes) {
> +			pbl_size *= 2;
> +			pbl_capacity = pbl_size / sizeof(u64);
> +			pbl_capacity = pbl_capacity * pbl_capacity;
> +		}
> +
> +		num_pbls = DIV_ROUND_UP(num_pbes, NUM_PBES_ON_PAGE(pbl_size));
> +		num_pbls++;	/* One for the layer0 ( points to the pbls) */
> +		pbl_info->two_layered = true;
> +	} else {
> +		/* One layered PBL */
> +		num_pbls = 1;
> +		pbl_size = max_t(u32, MIN_FW_PBL_PAGE_SIZE,
> +				 roundup_pow_of_two((num_pbes * sizeof(u64))));
> +		pbl_info->two_layered = false;
> +	}
> +
> +	pbl_info->num_pbls = num_pbls;
> +	pbl_info->pbl_size = pbl_size;
> +	pbl_info->num_pbes = num_pbes;
> +
> +	DP_DEBUG(dev, QEDR_MSG_MR,
> +		 "prepare pbl table: num_pbes=%d, num_pbls=%d, pbl_size=%d\n",
> +		 pbl_info->num_pbes, pbl_info->num_pbls, pbl_info->pbl_size);
> +
> +	return 0;
> +}
> +
> +static void qedr_populate_pbls(struct qedr_dev *dev, struct ib_umem *umem,
> +			       struct qedr_pbl *pbl,
> +			       struct qedr_pbl_info *pbl_info)
> +{
> +	int shift, pg_cnt, pages, pbe_cnt, total_num_pbes = 0;
> +	struct qedr_pbl *pbl_tbl;
> +	struct scatterlist *sg;
> +	struct regpair *pbe;
> +	int entry;
> +	u32 addr;
> +
> +	if (!pbl_info->num_pbes)
> +		return;
> +
> +	/* If we have a two layered pbl, the first pbl points to the rest
> +	 * of the pbls and the first entry lays on the second pbl in the table
> +	 */
> +	if (pbl_info->two_layered)
> +		pbl_tbl = &pbl[1];
> +	else
> +		pbl_tbl = pbl;
> +
> +	pbe = (struct regpair *)pbl_tbl->va;
> +	if (!pbe) {
> +		DP_ERR(dev, "pbe is NULL\n");

????

> +		return;
> +	}
> +
> +	pbe_cnt = 0;
> +
> +	shift = ilog2(umem->page_size);
> +
> +	for_each_sg(umem->sg_head.sgl, sg, umem->nmap, entry) {
> +		pages = sg_dma_len(sg) >> shift;
> +		for (pg_cnt = 0; pg_cnt < pages; pg_cnt++) {
> +			/* store the page address in pbe */
> +			pbe->lo = cpu_to_le32(sg_dma_address(sg) +
> +					      umem->page_size * pg_cnt);
> +			addr = upper_32_bits(sg_dma_address(sg) +
> +					     umem->page_size * pg_cnt);
> +			pbe->hi = cpu_to_le32(addr);
> +			pbe_cnt++;
> +			total_num_pbes++;
> +			pbe++;
> +
> +			if (total_num_pbes == pbl_info->num_pbes)
> +				return;
> +
> +			/* If the given pbl is full storing the pbes,
> +			 * move to next pbl.
> +			 */
> +			if (pbe_cnt == (pbl_info->pbl_size / sizeof(u64))) {
> +				pbl_tbl++;
> +				pbe = (struct regpair *)pbl_tbl->va;
> +				pbe_cnt = 0;
> +			}
> +		}
> +	}
> +}
> +
> +static int qedr_copy_cq_uresp(struct qedr_dev *dev,
> +			      struct qedr_cq *cq, struct ib_udata *udata)
> +{
> +	struct qedr_create_cq_uresp uresp;
> +	int rc;
> +
> +	memset(&uresp, 0, sizeof(uresp));
> +
> +	uresp.db_offset = DB_ADDR_SHIFT(DQ_PWM_OFFSET_UCM_RDMA_CQ_CONS_32BIT);
> +	uresp.icid = cq->icid;
> +
> +	rc = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
> +	if (rc)
> +		DP_ERR(dev, "copy error cqid=0x%x.\n", cq->icid);
> +
> +	return rc;
> +}
> +
> +static void consume_cqe(struct qedr_cq *cq)
> +{
> +	if (cq->latest_cqe == cq->toggle_cqe)
> +		cq->pbl_toggle ^= RDMA_CQE_REQUESTER_TOGGLE_BIT_MASK;
> +
> +	cq->latest_cqe = qed_chain_consume(&cq->pbl);
> +}
> +
> +static inline int qedr_align_cq_entries(int entries)
> +{
> +	u64 size, aligned_size;
> +
> +	/* We allocate an extra entry that we don't report to the FW. */
> +	size = (entries + 1) * QEDR_CQE_SIZE;
> +	aligned_size = ALIGN(size, PAGE_SIZE);
> +
> +	return aligned_size / QEDR_CQE_SIZE;
> +}
> +
> +static inline int qedr_init_user_queue(struct ib_ucontext *ib_ctx,
> +				       struct qedr_dev *dev,
> +				       struct qedr_userq *q,
> +				       u64 buf_addr, size_t buf_len,
> +				       int access, int dmasync)
> +{
> +	int page_cnt;
> +	int rc;
> +
> +	q->buf_addr = buf_addr;
> +	q->buf_len = buf_len;
> +	q->umem = ib_umem_get(ib_ctx, q->buf_addr, q->buf_len, access, dmasync);
> +	if (IS_ERR(q->umem)) {
> +		DP_ERR(dev, "create user queue: failed ib_umem_get, got %ld\n",
> +		       PTR_ERR(q->umem));
> +		return PTR_ERR(q->umem);
> +	}
> +
> +	page_cnt = ib_umem_page_count(q->umem);
> +	rc = qedr_prepare_pbl_tbl(dev, &q->pbl_info, page_cnt, 0);
> +	if (rc)
> +		goto err0;
> +
> +	q->pbl_tbl = qedr_alloc_pbl_tbl(dev, &q->pbl_info, GFP_KERNEL);
> +	if (!q->pbl_tbl)
> +		goto err0;
> +
> +	qedr_populate_pbls(dev, q->umem, q->pbl_tbl, &q->pbl_info);
> +
> +	return 0;
> +
> +err0:
> +	ib_umem_release(q->umem);
> +
> +	return rc;
> +}
> +
> +static inline void qedr_init_cq_params(struct qedr_cq *cq,
> +				       struct qedr_ucontext *ctx,
> +				       struct qedr_dev *dev, int vector,
> +				       int chain_entries, int page_cnt,
> +				       u64 pbl_ptr,
> +				       struct qed_rdma_create_cq_in_params
> +				       *params)
> +{
> +	memset(params, 0, sizeof(*params));
> +	params->cq_handle_hi = upper_32_bits((uintptr_t)cq);
> +	params->cq_handle_lo = lower_32_bits((uintptr_t)cq);
> +	params->cnq_id = vector;
> +	params->cq_size = chain_entries - 1;
> +	params->dpi = (ctx) ? ctx->dpi : dev->dpi;
> +	params->pbl_num_pages = page_cnt;
> +	params->pbl_ptr = pbl_ptr;
> +	params->pbl_two_level = 0;
> +}
> +
> +static void doorbell_cq(struct qedr_cq *cq, u32 cons, u8 flags)
> +{
> +	/* Flush data before signalling doorbell */
> +	wmb();
> +	cq->db.data.agg_flags = flags;
> +	cq->db.data.value = cpu_to_le32(cons);
> +	writeq(cq->db.raw, cq->db_addr);
> +
> +	/* Make sure write would stick */
> +	mmiowb();
> +}
> +
> +int qedr_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
> +{
> +	struct qedr_cq *cq = get_qedr_cq(ibcq);
> +	unsigned long sflags;
> +
> +	if (cq->cq_type == QEDR_CQ_TYPE_GSI)
> +		return 0;
> +
> +	spin_lock_irqsave(&cq->cq_lock, sflags);
> +
> +	cq->arm_flags = 0;
> +
> +	if (flags & IB_CQ_SOLICITED)
> +		cq->arm_flags |= DQ_UCM_ROCE_CQ_ARM_SE_CF_CMD;
> +
> +	if (flags & IB_CQ_NEXT_COMP)
> +		cq->arm_flags |= DQ_UCM_ROCE_CQ_ARM_CF_CMD;
> +
> +	doorbell_cq(cq, cq->cq_cons - 1, cq->arm_flags);
> +
> +	spin_unlock_irqrestore(&cq->cq_lock, sflags);
> +
> +	return 0;
> +}
> +
> +struct ib_cq *qedr_create_cq(struct ib_device *ibdev,
> +			     const struct ib_cq_init_attr *attr,
> +			     struct ib_ucontext *ib_ctx, struct ib_udata *udata)
> +{
> +	struct qedr_ucontext *ctx = get_qedr_ucontext(ib_ctx);
> +	struct qed_rdma_destroy_cq_out_params destroy_oparams;
> +	struct qed_rdma_destroy_cq_in_params destroy_iparams;
> +	struct qedr_dev *dev = get_qedr_dev(ibdev);
> +	struct qed_rdma_create_cq_in_params params;
> +	struct qedr_create_cq_ureq ureq;
> +	int vector = attr->comp_vector;
> +	int entries = attr->cqe;
> +	struct qedr_cq *cq;
> +	int chain_entries;
> +	int page_cnt;
> +	u64 pbl_ptr;
> +	u16 icid;
> +	int rc;
> +
> +	DP_DEBUG(dev, QEDR_MSG_INIT,
> +		 "create_cq: called from %s. entries=%d, vector=%d\n",
> +		 udata ? "User Lib" : "Kernel", entries, vector);
> +
> +	if (entries > QEDR_MAX_CQES) {
> +		DP_ERR(dev,
> +		       "create cq: the number of entries %d is too high. Must be equal or below %d.\n",
> +		       entries, QEDR_MAX_CQES);
> +		return ERR_PTR(-EINVAL);
> +	}
> +
> +	chain_entries = qedr_align_cq_entries(entries);
> +	chain_entries = min_t(int, chain_entries, QEDR_MAX_CQES);
> +
> +	cq = kzalloc(sizeof(*cq), GFP_KERNEL);
> +	if (!cq)
> +		return ERR_PTR(-ENOMEM);
> +
> +	if (udata) {
> +		memset(&ureq, 0, sizeof(ureq));
> +		if (ib_copy_from_udata(&ureq, udata, sizeof(ureq))) {
> +			DP_ERR(dev,
> +			       "create cq: problem copying data from user space\n");
> +			goto err0;
> +		}
> +
> +		if (!ureq.len) {
> +			DP_ERR(dev,
> +			       "create cq: cannot create a cq with 0 entries\n");
> +			goto err0;
> +		}
> +
> +		cq->cq_type = QEDR_CQ_TYPE_USER;
> +
> +		rc = qedr_init_user_queue(ib_ctx, dev, &cq->q, ureq.addr,
> +					  ureq.len, IB_ACCESS_LOCAL_WRITE, 1);
> +		if (rc)
> +			goto err0;
> +
> +		pbl_ptr = cq->q.pbl_tbl->pa;
> +		page_cnt = cq->q.pbl_info.num_pbes;
> +	} else {
> +		cq->cq_type = QEDR_CQ_TYPE_KERNEL;
> +
> +		rc = dev->ops->common->chain_alloc(dev->cdev,
> +						   QED_CHAIN_USE_TO_CONSUME,
> +						   QED_CHAIN_MODE_PBL,
> +						   QED_CHAIN_CNT_TYPE_U32,
> +						   chain_entries,
> +						   sizeof(union rdma_cqe),
> +						   &cq->pbl);
> +		if (rc)
> +			goto err1;
> +
> +		page_cnt = qed_chain_get_page_cnt(&cq->pbl);
> +		pbl_ptr = qed_chain_get_pbl_phys(&cq->pbl);
> +	}
> +
> +	qedr_init_cq_params(cq, ctx, dev, vector, chain_entries, page_cnt,
> +			    pbl_ptr, &params);
> +
> +	rc = dev->ops->rdma_create_cq(dev->rdma_ctx, &params, &icid);
> +	if (rc)
> +		goto err2;
> +
> +	cq->icid = icid;
> +	cq->sig = QEDR_CQ_MAGIC_NUMBER;
> +	spin_lock_init(&cq->cq_lock);
> +
> +	if (ib_ctx) {
> +		rc = qedr_copy_cq_uresp(dev, cq, udata);
> +		if (rc)
> +			goto err3;
> +	} else {
> +		/* Generate doorbell address. */
> +		cq->db_addr = dev->db_addr +
> +		    DB_ADDR_SHIFT(DQ_PWM_OFFSET_UCM_RDMA_CQ_CONS_32BIT);
> +		cq->db.data.icid = cq->icid;
> +		cq->db.data.params = DB_AGG_CMD_SET <<
> +		    RDMA_PWM_VAL32_DATA_AGG_CMD_SHIFT;
> +
> +		/* point to the very last element, passing it we will toggle */
> +		cq->toggle_cqe = qed_chain_get_last_elem(&cq->pbl);
> +		cq->pbl_toggle = RDMA_CQE_REQUESTER_TOGGLE_BIT_MASK;
> +		cq->latest_cqe = NULL;
> +		consume_cqe(cq);
> +		cq->cq_cons = qed_chain_get_cons_idx_u32(&cq->pbl);
> +	}
> +
> +	DP_DEBUG(dev, QEDR_MSG_CQ,
> +		 "create cq: icid=0x%0x, addr=%p, size(entries)=0x%0x\n",
> +		 cq->icid, cq, params.cq_size);
> +
> +	return &cq->ibcq;
> +
> +err3:
> +	destroy_iparams.icid = cq->icid;
> +	dev->ops->rdma_destroy_cq(dev->rdma_ctx, &destroy_iparams,
> +				  &destroy_oparams);
> +err2:
> +	if (udata)
> +		qedr_free_pbl(dev, &cq->q.pbl_info, cq->q.pbl_tbl);
> +	else
> +		dev->ops->common->chain_free(dev->cdev, &cq->pbl);
> +err1:
> +	if (udata)
> +		ib_umem_release(cq->q.umem);
> +err0:
> +	kfree(cq);
> +	return ERR_PTR(-EINVAL);
> +}
> +
> +int qedr_resize_cq(struct ib_cq *ibcq, int new_cnt, struct ib_udata *udata)
> +{
> +	struct qedr_dev *dev = get_qedr_dev(ibcq->device);
> +	struct qedr_cq *cq = get_qedr_cq(ibcq);
> +
> +	DP_ERR(dev, "cq %p RESIZE NOT SUPPORTED\n", cq);
> +
> +	return 0;
> +}
> +
> +int qedr_destroy_cq(struct ib_cq *ibcq)
> +{
> +	struct qedr_dev *dev = get_qedr_dev(ibcq->device);
> +	struct qed_rdma_destroy_cq_out_params oparams;
> +	struct qed_rdma_destroy_cq_in_params iparams;
> +	struct qedr_cq *cq = get_qedr_cq(ibcq);
> +
> +	DP_DEBUG(dev, QEDR_MSG_CQ, "destroy cq: cq_id %d", cq->icid);
> +
> +	/* GSIs CQs are handled by driver, so they don't exist in the FW */
> +	if (cq->cq_type != QEDR_CQ_TYPE_GSI) {
> +		iparams.icid = cq->icid;
> +		dev->ops->rdma_destroy_cq(dev->rdma_ctx, &iparams, &oparams);
> +		dev->ops->common->chain_free(dev->cdev, &cq->pbl);
> +	}
> +
> +	if (ibcq->uobject && ibcq->uobject->context) {
> +		qedr_free_pbl(dev, &cq->q.pbl_info, cq->q.pbl_tbl);
> +		ib_umem_release(cq->q.umem);
> +	}
> +
> +	kfree(cq);
> +
> +	return 0;
> +}
> diff --git a/drivers/infiniband/hw/qedr/verbs.h b/drivers/infiniband/hw/qedr/verbs.h
> index 9472044..36c8a69 100644
> --- a/drivers/infiniband/hw/qedr/verbs.h
> +++ b/drivers/infiniband/hw/qedr/verbs.h
> @@ -40,6 +40,8 @@ int qedr_modify_port(struct ib_device *, u8 port, int mask,
>
>  int qedr_query_gid(struct ib_device *, u8 port, int index, union ib_gid *gid);
>
> +int qedr_query_pkey(struct ib_device *, u8 port, u16 index, u16 *pkey);
> +
>  struct ib_ucontext *qedr_alloc_ucontext(struct ib_device *, struct ib_udata *);
>  int qedr_dealloc_ucontext(struct ib_ucontext *);
>
> @@ -49,4 +51,16 @@ int qedr_del_gid(struct ib_device *device, u8 port_num,
>  int qedr_add_gid(struct ib_device *device, u8 port_num,
>  		 unsigned int index, const union ib_gid *gid,
>  		 const struct ib_gid_attr *attr, void **context);
> +struct ib_pd *qedr_alloc_pd(struct ib_device *,
> +			    struct ib_ucontext *, struct ib_udata *);
> +int qedr_dealloc_pd(struct ib_pd *pd);
> +
> +struct ib_cq *qedr_create_cq(struct ib_device *ibdev,
> +			     const struct ib_cq_init_attr *attr,
> +			     struct ib_ucontext *ib_ctx,
> +			     struct ib_udata *udata);
> +int qedr_resize_cq(struct ib_cq *, int cqe, struct ib_udata *);
> +int qedr_destroy_cq(struct ib_cq *);
> +int qedr_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags);
> +
>  #endif
> diff --git a/include/uapi/rdma/qedr-abi.h b/include/uapi/rdma/qedr-abi.h
> index f7c7fff..b0fc5f2 100644
> --- a/include/uapi/rdma/qedr-abi.h
> +++ b/include/uapi/rdma/qedr-abi.h
> @@ -50,4 +50,23 @@ struct qedr_alloc_ucontext_resp {
>  	__u32 sges_per_srq_wr;
>  	__u32 max_cqes;
>  };
> +
> +struct qedr_alloc_pd_ureq {
> +	__u64 rsvd1;
> +};
> +
> +struct qedr_alloc_pd_uresp {
> +	__u32 pd_id;
> +};
> +
> +struct qedr_create_cq_ureq {
> +	__u64 addr;
> +	__u64 len;
> +};
> +
> +struct qedr_create_cq_uresp {
> +	__u32 db_offset;
> +	__u16 icid;
> +};
> +
>  #endif /* __QEDR_USER_H__ */
> --
> 1.8.3.1
>
> --
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> the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
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Re: [PATCH qedr 04/10] qedr: Add support for PD,PKEY and CQ verbs

[Amrani, Ram]

>> +     pd = kzalloc(sizeof(*pd), GFP_KERNEL);
>> +     if (!pd) {
>> +             DP_ERR(dev, "failed to alloce PD\n");
>> +             return ERR_PTR(-ENOMEM);
>> +     }
>> +
>> +     if (!dev->rdma_ctx) {
>> +             DP_ERR(dev, "invlaid RDMA context\n");
>> +             return ERR_PTR(-EINVAL);
>
>Don't you want to free pd which was allocated a couple of lines before?

Good catch. Thanks.

>> +     pbe = (struct regpair *)pbl_tbl->va;
>> +     if (!pbe) {
>> +             DP_ERR(dev, "pbe is NULL\n");
>
> ????

Yep, I'll change this.    --
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RE: [PATCH qedr 04/10] qedr: Add support for PD,PKEY and CQ verbs

[Elior, Ariel]

> > @@ -66,6 +85,12 @@ struct rdma_cqe_common {
> >     struct regpair qp_handle;
> >     __le16 reserved1[7];
> >     u8 flags;
> > +#define RDMA_CQE_COMMON_TOGGLE_BIT_MASK  0x1
> > +#define RDMA_CQE_COMMON_TOGGLE_BIT_SHIFT 0
> > +#define RDMA_CQE_COMMON_TYPE_MASK        0x3
> > +#define RDMA_CQE_COMMON_TYPE_SHIFT       1
> > +#define RDMA_CQE_COMMON_RESERVED2_MASK   0x1F
> > +#define RDMA_CQE_COMMON_RESERVED2_SHIFT  3
> >     u8 status;
>
> It is VERY uncommon to mix defines and structs together.
> Please don't do it, it confuses a lot and doesn't help to
> readability/debug.

Hi Leon,
Firstly, thanks for investing your time in reviewing our driver.
As for mixed defines and structures, far from being very uncommon, they are
actually ubiquitous throughout the kernel and are used by the foremost
developers (Dave Miller, Linus, Jeff Kirsher).

In infiniband tree alone, at least three drivers employ this:
drivers/infiniband/hw/ocrdma/ocrdma_sli.h line 1900
drivers/infiniband/hw/mthca/mthca_user.h line 68
drivers/infiniband/hw/cxgb3/cxio_hal.h line 116

In the net subsystem, it is even more widely used (~14k places), including
mellanox and intel drivers, as well as our bnx2x and qed* drivers and many
others. A few examples can be seen under:
drivers/net/ethernet/mellanox/mlx4/en_port.h line 94
drivers/net/ethernet/mellanox/mlx4/mlx4_en.h line 345
drivers/net/ethernet/mellanox/mlx4/fw.c line 2759
drivers/net/ethernet/intel/ixgbe/ixgbe.h line 623 (Jeff Kirsher)
drivers/net/ethernet/broadcom/tg3.h line 2540 (Dave Miller)
ixgbe.h uses this exactly like we do in the code you cited.

In other kernel cornerstones:
fs/ext4/ext4.h line 1287 (Linus)
include/net/sock.h line 312 (Dave)

I don't think there are grounds for objecting to this style. We'll take care
of the rest of your comments.

Thanks,
Ariel
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Re: [PATCH qedr 04/10] qedr: Add support for PD,PKEY and CQ verbs

[Leon Romanovsky]

[-- Attachment #1: Type: text/plain, Size: 2577 bytes --]

On Fri, Oct 07, 2016 at 10:47:18AM +0000, Elior, Ariel wrote:
> > > @@ -66,6 +85,12 @@ struct rdma_cqe_common {
> > >     struct regpair qp_handle;
> > >     __le16 reserved1[7];
> > >     u8 flags;
> > > +#define RDMA_CQE_COMMON_TOGGLE_BIT_MASK  0x1
> > > +#define RDMA_CQE_COMMON_TOGGLE_BIT_SHIFT 0
> > > +#define RDMA_CQE_COMMON_TYPE_MASK        0x3
> > > +#define RDMA_CQE_COMMON_TYPE_SHIFT       1
> > > +#define RDMA_CQE_COMMON_RESERVED2_MASK   0x1F
> > > +#define RDMA_CQE_COMMON_RESERVED2_SHIFT  3
> > >     u8 status;
> >
> > It is VERY uncommon to mix defines and structs together.
> > Please don't do it, it confuses a lot and doesn't help to
> > readability/debug.
>
> Hi Leon,
> Firstly, thanks for investing your time in reviewing our driver.
> As for mixed defines and structures, far from being very uncommon, they are
> actually ubiquitous throughout the kernel and are used by the foremost
> developers (Dave Miller, Linus, Jeff Kirsher).

Net subsystem is very different from other kernel community.
For example, this article from LWN [1] - "Coding-style exceptionalism"
talks about it.

>
> In infiniband tree alone, at least three drivers employ this:
> drivers/infiniband/hw/ocrdma/ocrdma_sli.h line 1900
> drivers/infiniband/hw/mthca/mthca_user.h line 68
> drivers/infiniband/hw/cxgb3/cxio_hal.h line 116

All of them are copy-paste from pre-historic era.

>
> In the net subsystem, it is even more widely used (~14k places), including
> mellanox and intel drivers, as well as our bnx2x and qed* drivers and many
> others. A few examples can be seen under:
> drivers/net/ethernet/mellanox/mlx4/en_port.h line 94
> drivers/net/ethernet/mellanox/mlx4/mlx4_en.h line 345
> drivers/net/ethernet/mellanox/mlx4/fw.c line 2759

Thanks for pointing it.
We will fix it.

> drivers/net/ethernet/intel/ixgbe/ixgbe.h line 623 (Jeff Kirsher)
> drivers/net/ethernet/broadcom/tg3.h line 2540 (Dave Miller)
> ixgbe.h uses this exactly like we do in the code you cited.
>
> In other kernel cornerstones:
> fs/ext4/ext4.h line 1287 (Linus)

1. From git blame, this define was added in 2010 !!!!
2. It has totally different meaning from your code - to mark the
position in the structure.

> include/net/sock.h line 312 (Dave)

Net is a bad example.

>
> I don't think there are grounds for objecting to this style. We'll take care
> of the rest of your comments.

As you wish, at the end it will be Doug's decision, if he wants to see
driver submitted in 2016 in different coding style from rest of the subsystem.

[1] https://lwn.net/Articles/694755/

>
> Thanks,
> Ariel

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Re: [PATCH qedr 04/10] qedr: Add support for PD,PKEY and CQ verbs

[Doug Ledford]

[-- Attachment #1.1: Type: text/plain, Size: 2070 bytes --]

On 10/7/2016 10:24 AM, Leon Romanovsky wrote:
> On Fri, Oct 07, 2016 at 10:47:18AM +0000, Elior, Ariel wrote:
>>>> @@ -66,6 +85,12 @@ struct rdma_cqe_common {
>>>>     struct regpair qp_handle;
>>>>     __le16 reserved1[7];
>>>>     u8 flags;
>>>> +#define RDMA_CQE_COMMON_TOGGLE_BIT_MASK  0x1
>>>> +#define RDMA_CQE_COMMON_TOGGLE_BIT_SHIFT 0
>>>> +#define RDMA_CQE_COMMON_TYPE_MASK        0x3
>>>> +#define RDMA_CQE_COMMON_TYPE_SHIFT       1
>>>> +#define RDMA_CQE_COMMON_RESERVED2_MASK   0x1F
>>>> +#define RDMA_CQE_COMMON_RESERVED2_SHIFT  3
>>>>     u8 status;
>>>
>>> It is VERY uncommon to mix defines and structs together.
>>> Please don't do it, it confuses a lot and doesn't help to
>>> readability/debug.
>>
>> Hi Leon,
>> Firstly, thanks for investing your time in reviewing our driver.
>> As for mixed defines and structures, far from being very uncommon, they are
>> actually ubiquitous throughout the kernel and are used by the foremost
>> developers (Dave Miller, Linus, Jeff Kirsher).
> 
> Net subsystem is very different from other kernel community.
> For example, this article from LWN [1] - "Coding-style exceptionalism"
> talks about it.

> [1] https://lwn.net/Articles/694755/

That article only refers to multi-line comments, not to embedding
#defines inside of structs that the #defines are used with.

My personal taste on things like this is that if you had something like
a variable with a result code, then use a separate enum for the possible
options.  However, in this case, you have a multi-mask item and the
defines are the three masks and their shifts.  I'm OK with that being
mixed in or being separate, but if it's separate, I would want it
immediately before the struct with a comment specifying that this is the
format of the status byte in the struct.  What I wouldn't want is the
#defines moved far away from the struct with a bunch of other defines
where the context of the struct is lost.

-- 
Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
    GPG Key ID: 0E572FDD


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Re: [PATCH qedr 04/10] qedr: Add support for PD,PKEY and CQ verbs

[Leon Romanovsky]

[-- Attachment #1: Type: text/plain, Size: 2554 bytes --]

On Sat, Oct 08, 2016 at 09:35:06AM -0400, Doug Ledford wrote:
> On 10/7/2016 10:24 AM, Leon Romanovsky wrote:
> > On Fri, Oct 07, 2016 at 10:47:18AM +0000, Elior, Ariel wrote:
> >>>> @@ -66,6 +85,12 @@ struct rdma_cqe_common {
> >>>>     struct regpair qp_handle;
> >>>>     __le16 reserved1[7];
> >>>>     u8 flags;
> >>>> +#define RDMA_CQE_COMMON_TOGGLE_BIT_MASK  0x1
> >>>> +#define RDMA_CQE_COMMON_TOGGLE_BIT_SHIFT 0
> >>>> +#define RDMA_CQE_COMMON_TYPE_MASK        0x3
> >>>> +#define RDMA_CQE_COMMON_TYPE_SHIFT       1
> >>>> +#define RDMA_CQE_COMMON_RESERVED2_MASK   0x1F
> >>>> +#define RDMA_CQE_COMMON_RESERVED2_SHIFT  3
> >>>>     u8 status;
> >>>
> >>> It is VERY uncommon to mix defines and structs together.
> >>> Please don't do it, it confuses a lot and doesn't help to
> >>> readability/debug.
> >>
> >> Hi Leon,
> >> Firstly, thanks for investing your time in reviewing our driver.
> >> As for mixed defines and structures, far from being very uncommon, they are
> >> actually ubiquitous throughout the kernel and are used by the foremost
> >> developers (Dave Miller, Linus, Jeff Kirsher).
> >
> > Net subsystem is very different from other kernel community.
> > For example, this article from LWN [1] - "Coding-style exceptionalism"
> > talks about it.
>
> > [1] https://lwn.net/Articles/694755/
>
> That article only refers to multi-line comments, not to embedding
> #defines inside of structs that the #defines are used with.

That article supports my claim that net subsystem is different from the
rest of the kernel.

>
> My personal taste on things like this is that if you had something like
> a variable with a result code, then use a separate enum for the possible
> options.  However, in this case, you have a multi-mask item and the
> defines are the three masks and their shifts.  I'm OK with that being
> mixed in or being separate, but if it's separate, I would want it
> immediately before the struct with a comment specifying that this is the
> format of the status byte in the struct.  What I wouldn't want is the
> #defines moved far away from the struct with a bunch of other defines
> where the context of the struct is lost.

It looks like you are neutral on the topic, and I'm against mixing these
specific defines with structures. Every change in such define changes
struct as well which can be easily missed out.

Ram,
Please invest an extra effort and help the reviewers to accomplish their
task.

Thanks

>
> --
> Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
>     GPG Key ID: 0E572FDD
>




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RE: [PATCH qedr 04/10] qedr: Add support for PD,PKEY and CQ verbs

[Elior, Ariel]

> > My personal taste on things like this is that if you had something like
> > a variable with a result code, then use a separate enum for the possible
> > options.  However, in this case, you have a multi-mask item and the
> > defines are the three masks and their shifts.  I'm OK with that being
> > mixed in or being separate, but if it's separate, I would want it
> > immediately before the struct with a comment specifying that this is the
> > format of the status byte in the struct.  What I wouldn't want is the
> > #defines moved far away from the struct with a bunch of other defines
> > where the context of the struct is lost.
> 
> It looks like you are neutral on the topic, and I'm against mixing these
> specific defines with structures. Every change in such define changes
> struct as well which can be easily missed out.
> 

Leon, I don't think that is reasonable. I can accept that refactoring all of
our code so that defines end up outside the structures would make it
easier for you personally to review, but I don't agree there is any general
improved readability. Quite the opposite. The whole purpose of storing
the defines adjacent to their fields is so you can easily associate them
together. The reason that this style is used by so many people is *for*
improved debuggability and readability. This style is prevalent throughout
the kernel. Even if you think net is a bad example (while I think it is an
excellent example), you can find examples in every corner of the kernel
so this is not "a net thing".

Here are just a few examples outside of net (there are thousands):
fs/cachefiles/internal.h line 86
block/partitions/acorn.c line 69
crypto/jitterentropy.c line line 78
kernel/sched/sched.h lines 594 and 1250
drivers/block/drbd/drbd_int.h line 996
drivers/gpu/drm/gma500/psb_intel_drv.h line 128

As Doug is comfortable with this style, we are going to leave it as is.
Try thinking of our entrance to linux-rdma as an opportunity to cross-
pollinate and bring over some new techniques and new people into
the subsystem.

Thanks,
Ariel
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Re: [PATCH qedr 05/10] qedr: Add support for QP verbs

[Leon Romanovsky]

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On Wed, Oct 05, 2016 at 06:47:58PM +0300, Ram Amrani wrote:
> Add support for Queue Pair verbs which adds, deletes,
> modifies and queries Queue Pairs.
>
> Signed-off-by: Rajesh Borundia <rajesh.borundia-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
> Signed-off-by: Ram Amrani <Ram.Amrani-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>
> ---
> +	qp->wqe_wr_id = kcalloc(qp->sq.max_wr, sizeof(*qp->wqe_wr_id),
> +				GFP_KERNEL);
> +	if (!qp->wqe_wr_id) {
> +		DP_ERR(dev, "create qp: failed SQ shadow memory allocation\n");
> +		return -ENOMEM;
> +	}

Please remove prints for ENOMEM failures for all code. k*alloc
interfaces will print it for you.

Thanks

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RE: [PATCH qedr 04/10] qedr: Add support for PD,PKEY and CQ verbs

[Amrani, Ram]

> > +/* * CQE requester status enumeration */ enum
> > +rdma_cqe_requester_status_enum {
> > +	RDMA_CQE_REQ_STS_OK,
> > +	RDMA_CQE_REQ_STS_BAD_RESPONSE_ERR,
> > +	RDMA_CQE_REQ_STS_LOCAL_LENGTH_ERR,
> > +	RDMA_CQE_REQ_STS_LOCAL_QP_OPERATION_ERR,
> > +	RDMA_CQE_REQ_STS_LOCAL_PROTECTION_ERR,
> > +	RDMA_CQE_REQ_STS_MEMORY_MGT_OPERATION_ERR,
> > +	RDMA_CQE_REQ_STS_REMOTE_INVALID_REQUEST_ERR,
> > +	RDMA_CQE_REQ_STS_REMOTE_ACCESS_ERR,
> > +	RDMA_CQE_REQ_STS_REMOTE_OPERATION_ERR,
> > +	RDMA_CQE_REQ_STS_RNR_NAK_RETRY_CNT_ERR,
> > +	RDMA_CQE_REQ_STS_TRANSPORT_RETRY_CNT_ERR,
> > +	RDMA_CQE_REQ_STS_WORK_REQUEST_FLUSHED_ERR,
> > +	MAX_RDMA_CQE_REQUESTER_STATUS_ENUM
> 
> Please add "," at the last line of enums, it will allow future changes to these
> enums with minimal churn.

This is a good idea and I've applied it to several enums in the patch.
However, I think that this specific enum should left be as is since the last element should always remain last as it is a MAX_*
 
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Re: [PATCH qedr 04/10] qedr: Add support for PD,PKEY and CQ verbs

[Leon Romanovsky]

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On Mon, Oct 10, 2016 at 06:34:43AM +0000, Amrani, Ram wrote:
> > > +/* * CQE requester status enumeration */ enum
> > > +rdma_cqe_requester_status_enum {
> > > +	RDMA_CQE_REQ_STS_OK,
> > > +	RDMA_CQE_REQ_STS_BAD_RESPONSE_ERR,
> > > +	RDMA_CQE_REQ_STS_LOCAL_LENGTH_ERR,
> > > +	RDMA_CQE_REQ_STS_LOCAL_QP_OPERATION_ERR,
> > > +	RDMA_CQE_REQ_STS_LOCAL_PROTECTION_ERR,
> > > +	RDMA_CQE_REQ_STS_MEMORY_MGT_OPERATION_ERR,
> > > +	RDMA_CQE_REQ_STS_REMOTE_INVALID_REQUEST_ERR,
> > > +	RDMA_CQE_REQ_STS_REMOTE_ACCESS_ERR,
> > > +	RDMA_CQE_REQ_STS_REMOTE_OPERATION_ERR,
> > > +	RDMA_CQE_REQ_STS_RNR_NAK_RETRY_CNT_ERR,
> > > +	RDMA_CQE_REQ_STS_TRANSPORT_RETRY_CNT_ERR,
> > > +	RDMA_CQE_REQ_STS_WORK_REQUEST_FLUSHED_ERR,
> > > +	MAX_RDMA_CQE_REQUESTER_STATUS_ENUM
> >
> > Please add "," at the last line of enums, it will allow future changes to these
> > enums with minimal churn.
>
> This is a good idea and I've applied it to several enums in the patch.
> However, I think that this specific enum should left be as is since the last element should always remain last as it is a MAX_*

It makes sense,
Thanks

>
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