RDMA/mana_ib: register RDMA device with GDMA

Software client needs to register with the RDMA management interface on
the SoC to access more features, including querying device capabilities
and RC queue pair.

Signed-off-by: Long Li <longli@microsoft.com>
Link: https://lore.kernel.org/r/1702692255-23640-2-git-send-email-longli@linuxonhyperv.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>

Author: longlimsft

drivers/infiniband/hw/mana/device.c

@@ -68,7 +68,6 @@ static int mana_ib_probe(struct auxiliary_device *adev,
 	ibdev_dbg(&dev->ib_dev, "mdev=%p id=%d num_ports=%d\n", mdev,
 		  mdev->dev_id.as_uint32, dev->ib_dev.phys_port_cnt);
 
-	dev->gdma_dev = mdev;
 	dev->ib_dev.node_type = RDMA_NODE_IB_CA;
 
 	/*
@@ -78,23 +77,38 @@ static int mana_ib_probe(struct auxiliary_device *adev,
 	dev->ib_dev.num_comp_vectors = 1;
 	dev->ib_dev.dev.parent = mdev->gdma_context->dev;
 
-	ret = ib_register_device(&dev->ib_dev, "mana_%d",
-				 mdev->gdma_context->dev);
+	ret = mana_gd_register_device(&mdev->gdma_context->mana_ib);
 	if (ret) {
-		ib_dealloc_device(&dev->ib_dev);
-		return ret;
+		ibdev_err(&dev->ib_dev, "Failed to register device, ret %d",
+			  ret);
+		goto free_ib_device;
 	}
+	dev->gdma_dev = &mdev->gdma_context->mana_ib;
+
+	ret = ib_register_device(&dev->ib_dev, "mana_%d",
+				 mdev->gdma_context->dev);
+	if (ret)
+		goto deregister_device;
 
 	dev_set_drvdata(&adev->dev, dev);
 
 	return 0;
+
+deregister_device:
+	mana_gd_deregister_device(dev->gdma_dev);
+free_ib_device:
+	ib_dealloc_device(&dev->ib_dev);
+	return ret;
 }
 
 static void mana_ib_remove(struct auxiliary_device *adev)
 {
 	struct mana_ib_dev *dev = dev_get_drvdata(&adev->dev);
 
 	ib_unregister_device(&dev->ib_dev);
+
+	mana_gd_deregister_device(dev->gdma_dev);
+
 	ib_dealloc_device(&dev->ib_dev);
 }
 

drivers/infiniband/hw/mana/main.c

@@ -8,7 +8,7 @@
 void mana_ib_uncfg_vport(struct mana_ib_dev *dev, struct mana_ib_pd *pd,
 			 u32 port)
 {
-	struct gdma_dev *gd = dev->gdma_dev;
+	struct gdma_dev *gd = &dev->gdma_dev->gdma_context->mana;
 	struct mana_port_context *mpc;
 	struct net_device *ndev;
 	struct mana_context *mc;
@@ -31,7 +31,7 @@ void mana_ib_uncfg_vport(struct mana_ib_dev *dev, struct mana_ib_pd *pd,
 int mana_ib_cfg_vport(struct mana_ib_dev *dev, u32 port, struct mana_ib_pd *pd,
 		      u32 doorbell_id)
 {
-	struct gdma_dev *mdev = dev->gdma_dev;
+	struct gdma_dev *mdev = &dev->gdma_dev->gdma_context->mana;
 	struct mana_port_context *mpc;
 	struct mana_context *mc;
 	struct net_device *ndev;

drivers/infiniband/hw/mana/qp.c

@@ -21,8 +21,8 @@ static int mana_ib_cfg_vport_steering(struct mana_ib_dev *dev,
 	u32 req_buf_size;
 	int i, err;
 
-	mdev = dev->gdma_dev;
-	gc = mdev->gdma_context;
+	gc = dev->gdma_dev->gdma_context;
+	mdev = &gc->mana;
 
 	req_buf_size =
 		sizeof(*req) + sizeof(mana_handle_t) * MANA_INDIRECT_TABLE_SIZE;
@@ -102,20 +102,21 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, struct ib_pd *pd,
 	struct ib_rwq_ind_table *ind_tbl = attr->rwq_ind_tbl;
 	struct mana_ib_create_qp_rss_resp resp = {};
 	struct mana_ib_create_qp_rss ucmd = {};
-	struct gdma_dev *gd = mdev->gdma_dev;
 	mana_handle_t *mana_ind_table;
 	struct mana_port_context *mpc;
+	unsigned int ind_tbl_size;
 	struct mana_context *mc;
 	struct net_device *ndev;
 	struct mana_ib_cq *cq;
 	struct mana_ib_wq *wq;
-	unsigned int ind_tbl_size;
+	struct gdma_dev *gd;
 	struct ib_cq *ibcq;
 	struct ib_wq *ibwq;
 	int i = 0;
 	u32 port;
 	int ret;
 
+	gd = &mdev->gdma_dev->gdma_context->mana;
 	mc = gd->driver_data;
 
 	if (!udata || udata->inlen < sizeof(ucmd))
@@ -266,8 +267,8 @@ static int mana_ib_create_qp_raw(struct ib_qp *ibqp, struct ib_pd *ibpd,
 	struct mana_ib_ucontext *mana_ucontext =
 		rdma_udata_to_drv_context(udata, struct mana_ib_ucontext,
 					  ibucontext);
+	struct gdma_dev *gd = &mdev->gdma_dev->gdma_context->mana;
 	struct mana_ib_create_qp_resp resp = {};
-	struct gdma_dev *gd = mdev->gdma_dev;
 	struct mana_ib_create_qp ucmd = {};
 	struct mana_obj_spec wq_spec = {};
 	struct mana_obj_spec cq_spec = {};
@@ -437,7 +438,7 @@ static int mana_ib_destroy_qp_rss(struct mana_ib_qp *qp,
 {
 	struct mana_ib_dev *mdev =
 		container_of(qp->ibqp.device, struct mana_ib_dev, ib_dev);
-	struct gdma_dev *gd = mdev->gdma_dev;
+	struct gdma_dev *gd = &mdev->gdma_dev->gdma_context->mana;
 	struct mana_port_context *mpc;
 	struct mana_context *mc;
 	struct net_device *ndev;
@@ -464,7 +465,7 @@ static int mana_ib_destroy_qp_raw(struct mana_ib_qp *qp, struct ib_udata *udata)
 {
 	struct mana_ib_dev *mdev =
 		container_of(qp->ibqp.device, struct mana_ib_dev, ib_dev);
-	struct gdma_dev *gd = mdev->gdma_dev;
+	struct gdma_dev *gd = &mdev->gdma_dev->gdma_context->mana;
 	struct ib_pd *ibpd = qp->ibqp.pd;
 	struct mana_port_context *mpc;
 	struct mana_context *mc;

drivers/net/ethernet/microsoft/mana/gdma_main.c

@@ -158,6 +158,9 @@ static int mana_gd_detect_devices(struct pci_dev *pdev)
 		if (dev_type == GDMA_DEVICE_MANA) {
 			gc->mana.gdma_context = gc;
 			gc->mana.dev_id = dev;
+		} else if (dev_type == GDMA_DEVICE_MANA_IB) {
+			gc->mana_ib.dev_id = dev;
+			gc->mana_ib.gdma_context = gc;
 		}
 	}
 
@@ -971,6 +974,7 @@ int mana_gd_register_device(struct gdma_dev *gd)
 
 	return 0;
 }
+EXPORT_SYMBOL_NS(mana_gd_register_device, NET_MANA);
 
 int mana_gd_deregister_device(struct gdma_dev *gd)
 {
@@ -1001,6 +1005,7 @@ int mana_gd_deregister_device(struct gdma_dev *gd)
 
 	return err;
 }
+EXPORT_SYMBOL_NS(mana_gd_deregister_device, NET_MANA);
 
 u32 mana_gd_wq_avail_space(struct gdma_queue *wq)
 {

include/net/mana/gdma.h

@@ -66,6 +66,7 @@ enum {
 	GDMA_DEVICE_NONE	= 0,
 	GDMA_DEVICE_HWC		= 1,
 	GDMA_DEVICE_MANA	= 2,
+	GDMA_DEVICE_MANA_IB	= 3,
 };
 
 struct gdma_resource {
@@ -387,6 +388,9 @@ struct gdma_context {
 
 	/* Azure network adapter */
 	struct gdma_dev		mana;
+
+	/* Azure RDMA adapter */
+	struct gdma_dev		mana_ib;
 };
 
 #define MAX_NUM_GDMA_DEVICES	4