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Date: Tue, 20 Sep 2016 13:35:54 +0300
From: Ram Amrani <Ram.Amrani@...ium.com>
To: <davem@...emloft.net>, <dledford@...hat.com>
CC: <Ariel.Elior@...ium.com>, <Michal.Kalderon@...ium.com>,
<Yuval.Mintz@...ium.com>, <rajesh.borundia@...ium.com>,
<linux-rdma@...r.kernel.org>, <netdev@...r.kernel.org>,
Ram amrani <Ram.Amrani@...ium.com>
Subject: [RFC v2 02/12] qedr: Add RoCE driver framework
From: Ram amrani <Ram.Amrani@...ium.com>
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@...ium.com>
Signed-off-by: Ram Amrani <Ram.Amrani@...ium.com>
---
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 | 276 ++++++++++++++++++++++++
drivers/infiniband/hw/qedr/qedr.h | 59 +++++
drivers/net/ethernet/qlogic/qede/Makefile | 1 +
drivers/net/ethernet/qlogic/qede/qede.h | 9 +
drivers/net/ethernet/qlogic/qede/qede_main.c | 35 ++-
drivers/net/ethernet/qlogic/qede/qede_roce.c | 309 +++++++++++++++++++++++++++
include/linux/qed/qed_if.h | 3 +-
include/linux/qed/qede_roce.h | 88 ++++++++
include/uapi/linux/pci_regs.h | 3 +
13 files changed, 785 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/net/ethernet/qlogic/qede/qede_roce.c
create mode 100644 include/linux/qed/qede_roce.h
diff --git a/drivers/infiniband/Kconfig b/drivers/infiniband/Kconfig
index e9b7dc0..77ab0f3 100644
--- a/drivers/infiniband/Kconfig
+++ b/drivers/infiniband/Kconfig
@@ -88,4 +88,6 @@ 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 c0c7cf8..c51e464 100644
--- a/drivers/infiniband/hw/Makefile
+++ b/drivers/infiniband/hw/Makefile
@@ -9,3 +9,4 @@ obj-$(CONFIG_INFINIBAND_NES) += nes/
obj-$(CONFIG_INFINIBAND_OCRDMA) += ocrdma/
obj-$(CONFIG_INFINIBAND_USNIC) += usnic/
obj-$(CONFIG_INFINIBAND_HFI1) += hfi1/
+obj-$(CONFIG_INFINIBAND_QEDR) += qedr/
diff --git a/drivers/infiniband/hw/qedr/Kconfig b/drivers/infiniband/hw/qedr/Kconfig
new file mode 100644
index 0000000..58b584f
--- /dev/null
+++ b/drivers/infiniband/hw/qedr/Kconfig
@@ -0,0 +1,7 @@
+config INFINIBAND_QEDR
+ tristate "QLogic RoCE driver"
+ depends on NETDEVICES && ETHERNET && PCI && 64BIT && QEDE
+ select QED_LL2
+ ---help---
+ This driver provides low-level InfiniBand over Ethernet
+ support for QLogic QED host channel adapters (HCAs).
diff --git a/drivers/infiniband/hw/qedr/Makefile b/drivers/infiniband/hw/qedr/Makefile
new file mode 100644
index 0000000..3a5b7a2
--- /dev/null
+++ b/drivers/infiniband/hw/qedr/Makefile
@@ -0,0 +1,3 @@
+obj-$(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..f60dc80
--- /dev/null
+++ b/drivers/infiniband/hw/qedr/main.c
@@ -0,0 +1,276 @@
+/* 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);
+
+uint debug;
+module_param(debug, uint, 0);
+MODULE_PARM_DESC(debug, "Default debug msglevel");
+
+static LIST_HEAD(qedr_dev_list);
+
+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]);
+}
+
+void qedr_config_debug(uint debug, u32 *p_dp_module, u8 *p_dp_level)
+{
+ *p_dp_level = 0;
+ *p_dp_module = 0;
+
+ if (debug & QED_LOG_VERBOSE_MASK) {
+ *p_dp_level = QED_LEVEL_VERBOSE;
+ *p_dp_module = (debug & 0x3FFFFFFF);
+ } else if (debug & QED_LOG_INFO_MASK) {
+ *p_dp_level = QED_LEVEL_INFO;
+ } else if (debug & QED_LOG_NOTICE_MASK) {
+ *p_dp_level = QED_LEVEL_NOTICE;
+ }
+}
+
+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_NOTICE(dev,
+ "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;
+ }
+
+ qedr_config_debug(debug, &dev->dp_module, &dev->dp_level);
+ DP_VERBOSE(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_VERBOSE(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..c8a1f61
--- /dev/null
+++ b/drivers/infiniband/hw/qedr/qedr.h
@@ -0,0 +1,59 @@
+/* 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)
+
+enum DP_QEDR_MODULE {
+ QEDR_MSG_INIT = 0x10000,
+};
+
+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/qede/Makefile b/drivers/net/ethernet/qlogic/qede/Makefile
index 74a4985..28dc589 100644
--- a/drivers/net/ethernet/qlogic/qede/Makefile
+++ b/drivers/net/ethernet/qlogic/qede/Makefile
@@ -2,3 +2,4 @@ obj-$(CONFIG_QEDE) := qede.o
qede-y := qede_main.o qede_ethtool.o
qede-$(CONFIG_DCB) += qede_dcbnl.o
+qede-$(CONFIG_INFINIBAND_QEDR) += qede_roce.o
diff --git a/drivers/net/ethernet/qlogic/qede/qede.h b/drivers/net/ethernet/qlogic/qede/qede.h
index e01adce..28c0e9f 100644
--- a/drivers/net/ethernet/qlogic/qede/qede.h
+++ b/drivers/net/ethernet/qlogic/qede/qede.h
@@ -106,6 +106,13 @@ struct qede_vlan {
bool configured;
};
+struct qede_rdma_dev {
+ struct qedr_dev *qedr_dev;
+ struct list_head entry;
+ struct list_head roce_event_list;
+ struct workqueue_struct *roce_wq;
+};
+
struct qede_dev {
struct qed_dev *cdev;
struct net_device *ndev;
@@ -185,6 +192,8 @@ struct qede_dev {
unsigned long sp_flags;
u16 vxlan_dst_port;
u16 geneve_dst_port;
+
+ struct qede_rdma_dev rdma_info;
};
enum QEDE_STATE {
diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c
index cd23a29..37f3a77 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_main.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_main.c
@@ -36,7 +36,7 @@
#include <linux/random.h>
#include <net/ip6_checksum.h>
#include <linux/bitops.h>
-
+#include <linux/qed/qede_roce.h>
#include "qede.h"
static char version[] =
@@ -189,8 +189,7 @@ static int qede_netdev_event(struct notifier_block *this, unsigned long event,
struct ethtool_drvinfo drvinfo;
struct qede_dev *edev;
- /* Currently only support name change */
- if (event != NETDEV_CHANGENAME)
+ if (event != NETDEV_CHANGENAME && event != NETDEV_CHANGEADDR)
goto done;
/* Check whether this is a qede device */
@@ -203,11 +202,18 @@ static int qede_netdev_event(struct notifier_block *this, unsigned long event,
goto done;
edev = netdev_priv(ndev);
- /* Notify qed of the name change */
- if (!edev->ops || !edev->ops->common)
- goto done;
- edev->ops->common->set_id(edev->cdev, edev->ndev->name,
- "qede");
+ switch (event) {
+ case NETDEV_CHANGENAME:
+ /* Notify qed of the name change */
+ if (!edev->ops || !edev->ops->common)
+ goto done;
+ edev->ops->common->set_id(edev->cdev, edev->ndev->name, "qede");
+ break;
+ case NETDEV_CHANGEADDR:
+ edev = netdev_priv(ndev);
+ qede_roce_event_changeaddr(edev);
+ break;
+ }
done:
return NOTIFY_DONE;
@@ -2541,10 +2547,14 @@ static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
qede_init_ndev(edev);
+ rc = qede_roce_dev_add(edev);
+ if (rc)
+ goto err3;
+
rc = register_netdev(edev->ndev);
if (rc) {
DP_NOTICE(edev, "Cannot register net-device\n");
- goto err3;
+ goto err4;
}
edev->ops->common->set_id(cdev, edev->ndev->name, DRV_MODULE_VERSION);
@@ -2564,6 +2574,8 @@ static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
return 0;
+err4:
+ qede_roce_dev_remove(edev);
err3:
free_netdev(edev->ndev);
err2:
@@ -2610,8 +2622,11 @@ static void __qede_remove(struct pci_dev *pdev, enum qede_remove_mode mode)
DP_INFO(edev, "Starting qede_remove\n");
cancel_delayed_work_sync(&edev->sp_task);
+
unregister_netdev(ndev);
+ qede_roce_dev_remove(edev);
+
edev->ops->common->set_power_state(cdev, PCI_D0);
pci_set_drvdata(pdev, NULL);
@@ -3508,6 +3523,7 @@ static void qede_unload(struct qede_dev *edev, enum qede_unload_mode mode)
DP_INFO(edev, "Starting qede unload\n");
+ qede_roce_dev_event_close(edev);
mutex_lock(&edev->qede_lock);
edev->state = QEDE_STATE_CLOSED;
@@ -3608,6 +3624,7 @@ static int qede_load(struct qede_dev *edev, enum qede_load_mode mode)
/* Query whether link is already-up */
memset(&link_output, 0, sizeof(link_output));
edev->ops->common->get_link(edev->cdev, &link_output);
+ qede_roce_dev_event_open(edev);
qede_link_update(edev, &link_output);
DP_INFO(edev, "Ending successfully qede load\n");
diff --git a/drivers/net/ethernet/qlogic/qede/qede_roce.c b/drivers/net/ethernet/qlogic/qede/qede_roce.c
new file mode 100644
index 0000000..3d12a44
--- /dev/null
+++ b/drivers/net/ethernet/qlogic/qede/qede_roce.c
@@ -0,0 +1,309 @@
+/* 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/pci.h>
+#include <linux/netdevice.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/qed/qede_roce.h>
+#include "qede.h"
+
+static struct qedr_driver *qedr_drv;
+static LIST_HEAD(qedr_dev_list);
+static DEFINE_MUTEX(qedr_dev_list_lock);
+
+bool qede_roce_supported(struct qede_dev *dev)
+{
+ return dev->dev_info.common.rdma_supported;
+}
+
+static void _qede_roce_dev_add(struct qede_dev *edev)
+{
+ if (!qedr_drv)
+ return;
+
+ edev->rdma_info.qedr_dev = qedr_drv->add(edev->cdev, edev->pdev,
+ edev->ndev);
+}
+
+static int qede_roce_create_wq(struct qede_dev *edev)
+{
+ INIT_LIST_HEAD(&edev->rdma_info.roce_event_list);
+ edev->rdma_info.roce_wq = create_singlethread_workqueue("roce_wq");
+ if (!edev->rdma_info.roce_wq) {
+ pr_err("qedr: Could not create workqueue\n");
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static void qede_roce_cleanup_event(struct qede_dev *edev)
+{
+ struct list_head *head = &edev->rdma_info.roce_event_list;
+ struct qede_roce_event_work *event_node;
+
+ flush_workqueue(edev->rdma_info.roce_wq);
+ while (!list_empty(head)) {
+ event_node = list_entry(head->next, struct qede_roce_event_work,
+ list);
+ cancel_work_sync(&event_node->work);
+ list_del(&event_node->list);
+ kfree(event_node);
+ }
+}
+
+static void qede_roce_destroy_wq(struct qede_dev *edev)
+{
+ qede_roce_cleanup_event(edev);
+ destroy_workqueue(edev->rdma_info.roce_wq);
+}
+
+int qede_roce_dev_add(struct qede_dev *edev)
+{
+ int rc = 0;
+
+ if (qede_roce_supported(edev)) {
+ rc = qede_roce_create_wq(edev);
+ if (rc)
+ return rc;
+
+ INIT_LIST_HEAD(&edev->rdma_info.entry);
+ mutex_lock(&qedr_dev_list_lock);
+ list_add_tail(&edev->rdma_info.entry, &qedr_dev_list);
+ _qede_roce_dev_add(edev);
+ mutex_unlock(&qedr_dev_list_lock);
+ }
+
+ return rc;
+}
+
+static void _qede_roce_dev_remove(struct qede_dev *edev)
+{
+ if (qedr_drv && qedr_drv->remove && edev->rdma_info.qedr_dev)
+ qedr_drv->remove(edev->rdma_info.qedr_dev);
+ edev->rdma_info.qedr_dev = NULL;
+}
+
+void qede_roce_dev_remove(struct qede_dev *edev)
+{
+ if (!qede_roce_supported(edev))
+ return;
+
+ qede_roce_destroy_wq(edev);
+ mutex_lock(&qedr_dev_list_lock);
+ _qede_roce_dev_remove(edev);
+ list_del(&edev->rdma_info.entry);
+ mutex_unlock(&qedr_dev_list_lock);
+}
+
+static void _qede_roce_dev_open(struct qede_dev *edev)
+{
+ if (qedr_drv && edev->rdma_info.qedr_dev && qedr_drv->notify)
+ qedr_drv->notify(edev->rdma_info.qedr_dev, QEDE_UP);
+}
+
+void qede_roce_dev_open(struct qede_dev *edev)
+{
+ if (!qede_roce_supported(edev))
+ return;
+
+ mutex_lock(&qedr_dev_list_lock);
+ _qede_roce_dev_open(edev);
+ mutex_unlock(&qedr_dev_list_lock);
+}
+
+static void _qede_roce_dev_close(struct qede_dev *edev)
+{
+ if (qedr_drv && edev->rdma_info.qedr_dev && qedr_drv->notify)
+ qedr_drv->notify(edev->rdma_info.qedr_dev, QEDE_DOWN);
+}
+
+void qede_roce_dev_close(struct qede_dev *edev)
+{
+ if (!qede_roce_supported(edev))
+ return;
+
+ mutex_lock(&qedr_dev_list_lock);
+ _qede_roce_dev_close(edev);
+ mutex_unlock(&qedr_dev_list_lock);
+}
+
+void qede_roce_dev_shutdown(struct qede_dev *edev)
+{
+ if (!qede_roce_supported(edev))
+ return;
+
+ mutex_lock(&qedr_dev_list_lock);
+ if (qedr_drv && edev->rdma_info.qedr_dev && qedr_drv->notify)
+ qedr_drv->notify(edev->rdma_info.qedr_dev, QEDE_CLOSE);
+ mutex_unlock(&qedr_dev_list_lock);
+}
+
+int qede_roce_register_driver(struct qedr_driver *drv)
+{
+ struct qede_dev *edev;
+ u8 qedr_counter = 0;
+
+ mutex_lock(&qedr_dev_list_lock);
+ if (qedr_drv) {
+ mutex_unlock(&qedr_dev_list_lock);
+ return -EINVAL;
+ }
+ qedr_drv = drv;
+
+ list_for_each_entry(edev, &qedr_dev_list, rdma_info.entry) {
+ struct net_device *netdev;
+
+ qedr_counter++;
+ _qede_roce_dev_add(edev);
+ netdev = edev->ndev;
+ if (netif_running(netdev) && netif_oper_up(netdev))
+ _qede_roce_dev_open(edev);
+ }
+ mutex_unlock(&qedr_dev_list_lock);
+
+ pr_err("qedr: discovered and registered %d RoCE funcs\n", qedr_counter);
+
+ return 0;
+}
+EXPORT_SYMBOL(qede_roce_register_driver);
+
+void qede_roce_unregister_driver(struct qedr_driver *drv)
+{
+ struct qede_dev *edev;
+
+ mutex_lock(&qedr_dev_list_lock);
+ list_for_each_entry(edev, &qedr_dev_list, rdma_info.entry) {
+ if (edev->rdma_info.qedr_dev)
+ _qede_roce_dev_remove(edev);
+ }
+ qedr_drv = NULL;
+ mutex_unlock(&qedr_dev_list_lock);
+}
+EXPORT_SYMBOL(qede_roce_unregister_driver);
+
+void qede_roce_changeaddr(struct qede_dev *edev)
+{
+ if (!qede_roce_supported(edev))
+ return;
+
+ if (qedr_drv && edev->rdma_info.qedr_dev && qedr_drv->notify)
+ qedr_drv->notify(edev->rdma_info.qedr_dev, QEDE_CHANGE_ADDR);
+}
+
+struct qede_roce_event_work *qede_roce_get_free_event_node(struct qede_dev
+ *edev)
+{
+ struct qede_roce_event_work *event_node = NULL;
+ struct list_head *list_node = NULL;
+ bool found = false;
+
+ list_for_each(list_node, &edev->rdma_info.roce_event_list) {
+ event_node = list_entry(list_node, struct qede_roce_event_work,
+ list);
+ if (!work_pending(&event_node->work)) {
+ found = true;
+ break;
+ }
+ }
+
+ if (!found) {
+ event_node = kzalloc(sizeof(*event_node), GFP_KERNEL);
+ if (!event_node) {
+ pr_err("qedr: Could not allocate memory for roce work\n");
+ return NULL;
+ }
+ list_add_tail(&event_node->list,
+ &edev->rdma_info.roce_event_list);
+ }
+
+ return event_node;
+}
+
+static void qede_roce_handle_event(struct work_struct *work)
+{
+ struct qede_roce_event_work *event_node;
+ enum qede_roce_event event;
+ struct qede_dev *edev;
+
+ event_node = container_of(work, struct qede_roce_event_work, work);
+ event = event_node->event;
+ edev = event_node->ptr;
+
+ switch (event) {
+ case QEDE_UP:
+ qede_roce_dev_open(edev);
+ break;
+ case QEDE_DOWN:
+ qede_roce_dev_close(edev);
+ break;
+ case QEDE_CLOSE:
+ qede_roce_dev_shutdown(edev);
+ break;
+ case QEDE_CHANGE_ADDR:
+ qede_roce_changeaddr(edev);
+ break;
+ default:
+ pr_err("qede: Invalid roce event %d", event);
+ }
+}
+
+static void qede_roce_add_event(struct qede_dev *edev,
+ enum qede_roce_event event)
+{
+ struct qede_roce_event_work *event_node;
+
+ event_node = qede_roce_get_free_event_node(edev);
+ if (!event_node)
+ return;
+
+ event_node->event = event;
+ event_node->ptr = edev;
+
+ INIT_WORK(&event_node->work, qede_roce_handle_event);
+ queue_work(edev->rdma_info.roce_wq, &event_node->work);
+}
+
+void qede_roce_dev_event_open(struct qede_dev *edev)
+{
+ qede_roce_add_event(edev, QEDE_UP);
+}
+
+void qede_roce_dev_event_close(struct qede_dev *edev)
+{
+ qede_roce_add_event(edev, QEDE_DOWN);
+}
+
+void qede_roce_event_changeaddr(struct qede_dev *edev)
+{
+ qede_roce_add_event(edev, QEDE_CHANGE_ADDR);
+}
diff --git a/include/linux/qed/qed_if.h b/include/linux/qed/qed_if.h
index c2d74e8..e313742 100644
--- a/include/linux/qed/qed_if.h
+++ b/include/linux/qed/qed_if.h
@@ -260,11 +260,10 @@ struct qed_dev_info {
/* MFW version */
u32 mfw_rev;
- bool rdma_supported;
-
u32 flash_size;
u8 mf_mode;
bool tx_switching;
+ bool rdma_supported;
};
enum qed_sb_type {
diff --git a/include/linux/qed/qede_roce.h b/include/linux/qed/qede_roce.h
new file mode 100644
index 0000000..fd7acc1
--- /dev/null
+++ b/include/linux/qed/qede_roce.h
@@ -0,0 +1,88 @@
+/* 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 QEDE_ROCE_H
+#define QEDE_ROCE_H
+
+struct qedr_dev;
+struct qed_dev;
+struct qede_dev;
+
+enum qede_roce_event {
+ QEDE_UP,
+ QEDE_DOWN,
+ QEDE_CHANGE_ADDR,
+ QEDE_CLOSE
+};
+
+struct qede_roce_event_work {
+ struct list_head list;
+ struct work_struct work;
+ void *ptr;
+ enum qede_roce_event event;
+};
+
+struct qedr_driver {
+ unsigned char name[32];
+
+ struct qedr_dev* (*add)(struct qed_dev *, struct pci_dev *,
+ struct net_device *);
+
+ void (*remove)(struct qedr_dev *);
+ void (*notify)(struct qedr_dev *, enum qede_roce_event);
+};
+
+/* APIs for RoCE driver to register callback handlers,
+ * which will be invoked when device is added, removed, ifup, ifdown
+ */
+int qede_roce_register_driver(struct qedr_driver *drv);
+void qede_roce_unregister_driver(struct qedr_driver *drv);
+
+bool qede_roce_supported(struct qede_dev *dev);
+
+#if IS_ENABLED(CONFIG_INFINIBAND_QEDR)
+int qede_roce_dev_add(struct qede_dev *dev);
+void qede_roce_dev_event_open(struct qede_dev *dev);
+void qede_roce_dev_event_close(struct qede_dev *dev);
+void qede_roce_dev_remove(struct qede_dev *dev);
+void qede_roce_event_changeaddr(struct qede_dev *qedr);
+#else
+static int qede_roce_dev_add(struct qede_dev *dev)
+{
+ return 0;
+}
+
+static void qede_roce_dev_event_open(struct qede_dev *dev) {}
+static void qede_roce_dev_event_close(struct qede_dev *dev) {}
+static void qede_roce_dev_remove(struct qede_dev *dev) {}
+static void qede_roce_event_changeaddr(struct qede_dev *qedr) {}
+#endif
+#endif
diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
index 4040951..3973000 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 comparison */
#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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