qedr: Add support for user context verbs

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

Signed-off-by: Rajesh Borundia <[email protected]>
Signed-off-by: Ram Amrani <[email protected]>
Signed-off-by: Doug Ledford <[email protected]>

Author: Ram Amrani

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

drivers/infiniband/hw/qedr/main.c

@@ -32,13 +32,16 @@
 #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>
 #include <linux/qed/qede_roce.h>
 #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;

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);