RDMA/qedr: Add iWARP doorbell recovery support

This patch adds the iWARP specific doorbells to the doorbell recovery
mechanism.

Link: https://lore.kernel.org/r/20191030094417.16866-9-michal.kalderon@marvell.com
Signed-off-by: Ariel Elior <ariel.elior@marvell.com>
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/hw/qedr/qedr.h

@@ -238,6 +238,11 @@ struct qedr_ucontext {
 	bool db_rec;
 };
 
+union db_prod32 {
+	struct rdma_pwm_val16_data data;
+	u32 raw;
+};
+
 union db_prod64 {
 	struct rdma_pwm_val32_data data;
 	u64 raw;
@@ -268,6 +273,8 @@ struct qedr_userq {
 	void __iomem *db_addr;
 	struct qedr_user_db_rec *db_rec_data;
 	struct rdma_user_mmap_entry *db_mmap_entry;
+	void __iomem *db_rec_db2_addr;
+	union db_prod32 db_rec_db2_data;
 };
 
 struct qedr_cq {
@@ -303,11 +310,6 @@ struct qedr_pd {
 	struct qedr_ucontext *uctx;
 };
 
-union db_prod32 {
-	struct rdma_pwm_val16_data data;
-	u32 raw;
-};
-
 struct qedr_qp_hwq_info {
 	/* WQE Elements */
 	struct qed_chain pbl;