RDMA/mlx5: Update mlx5_ib to use new cmd interface

Reuse newly introduced mlx5_cmd_exec_in() and mlx5_cmd_exec_inout() to
reduce code duplication in mlx5_ib module.

Link: https://lore.kernel.org/r/20200506065513.4668-2-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/hw/mlx5/cmd.c

@@ -1,46 +1,19 @@
+// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
 /*
- * Copyright (c) 2017, Mellanox Technologies. All rights reserved.
- *
- * 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.
+ * Copyright (c) 2017-2020, Mellanox Technologies inc. All rights reserved.
  */
 
 #include "cmd.h"
 
 int mlx5_cmd_dump_fill_mkey(struct mlx5_core_dev *dev, u32 *mkey)
 {
-	u32 out[MLX5_ST_SZ_DW(query_special_contexts_out)] = {0};
-	u32 in[MLX5_ST_SZ_DW(query_special_contexts_in)]   = {0};
+	u32 out[MLX5_ST_SZ_DW(query_special_contexts_out)] = {};
+	u32 in[MLX5_ST_SZ_DW(query_special_contexts_in)] = {};
 	int err;
 
 	MLX5_SET(query_special_contexts_in, in, opcode,
 		 MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS);
-	err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+	err = mlx5_cmd_exec_inout(dev, query_special_contexts, in, out);
 	if (!err)
 		*mkey = MLX5_GET(query_special_contexts_out, out,
 				 dump_fill_mkey);
@@ -50,36 +23,28 @@ int mlx5_cmd_dump_fill_mkey(struct mlx5_core_dev *dev, u32 *mkey)
 int mlx5_cmd_null_mkey(struct mlx5_core_dev *dev, u32 *null_mkey)
 {
 	u32 out[MLX5_ST_SZ_DW(query_special_contexts_out)] = {};
-	u32 in[MLX5_ST_SZ_DW(query_special_contexts_in)]   = {};
+	u32 in[MLX5_ST_SZ_DW(query_special_contexts_in)] = {};
 	int err;
 
 	MLX5_SET(query_special_contexts_in, in, opcode,
 		 MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS);
-	err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+	err = mlx5_cmd_exec_inout(dev, query_special_contexts, in, out);
 	if (!err)
 		*null_mkey = MLX5_GET(query_special_contexts_out, out,
 				      null_mkey);
 	return err;
 }
 
 int mlx5_cmd_query_cong_params(struct mlx5_core_dev *dev, int cong_point,
-			       void *out, int out_size)
+			       void *out)
 {
-	u32 in[MLX5_ST_SZ_DW(query_cong_params_in)] = { };
+	u32 in[MLX5_ST_SZ_DW(query_cong_params_in)] = {};
 
 	MLX5_SET(query_cong_params_in, in, opcode,
 		 MLX5_CMD_OP_QUERY_CONG_PARAMS);
 	MLX5_SET(query_cong_params_in, in, cong_protocol, cong_point);
 
-	return mlx5_cmd_exec(dev, in, sizeof(in), out, out_size);
-}
-
-int mlx5_cmd_modify_cong_params(struct mlx5_core_dev *dev,
-				void *in, int in_size)
-{
-	u32 out[MLX5_ST_SZ_DW(modify_cong_params_out)] = { };
-
-	return mlx5_cmd_exec(dev, in, in_size, out, sizeof(out));
+	return mlx5_cmd_exec_inout(dev, query_cong_params, in, out);
 }
 
 int mlx5_cmd_alloc_memic(struct mlx5_dm *dm, phys_addr_t *addr,
@@ -133,7 +98,7 @@ int mlx5_cmd_alloc_memic(struct mlx5_dm *dm, phys_addr_t *addr,
 		MLX5_SET64(alloc_memic_in, in, range_start_addr,
 			   hw_start_addr + (page_idx * PAGE_SIZE));
 
-		ret = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+		ret = mlx5_cmd_exec_inout(dev, alloc_memic, in, out);
 		if (ret) {
 			spin_lock(&dm->lock);
 			bitmap_clear(dm->memic_alloc_pages,
@@ -162,8 +127,7 @@ void mlx5_cmd_dealloc_memic(struct mlx5_dm *dm, phys_addr_t addr, u64 length)
 	struct mlx5_core_dev *dev = dm->dev;
 	u64 hw_start_addr = MLX5_CAP64_DEV_MEM(dev, memic_bar_start_addr);
 	u32 num_pages = DIV_ROUND_UP(length, PAGE_SIZE);
-	u32 out[MLX5_ST_SZ_DW(dealloc_memic_out)] = {0};
-	u32 in[MLX5_ST_SZ_DW(dealloc_memic_in)] = {0};
+	u32 in[MLX5_ST_SZ_DW(dealloc_memic_in)] = {};
 	u64 start_page_idx;
 	int err;
 
@@ -174,7 +138,7 @@ void mlx5_cmd_dealloc_memic(struct mlx5_dm *dm, phys_addr_t addr, u64 length)
 	MLX5_SET64(dealloc_memic_in, in, memic_start_addr, addr);
 	MLX5_SET(dealloc_memic_in, in, memic_size, length);
 
-	err =  mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+	err =  mlx5_cmd_exec_in(dev, dealloc_memic, in);
 	if (err)
 		return;
 
@@ -198,49 +162,46 @@ int mlx5_cmd_query_ext_ppcnt_counters(struct mlx5_core_dev *dev, void *out)
 
 void mlx5_cmd_destroy_tir(struct mlx5_core_dev *dev, u32 tirn, u16 uid)
 {
-	u32 in[MLX5_ST_SZ_DW(destroy_tir_in)]   = {};
-	u32 out[MLX5_ST_SZ_DW(destroy_tir_out)] = {};
+	u32 in[MLX5_ST_SZ_DW(destroy_tir_in)] = {};
 
 	MLX5_SET(destroy_tir_in, in, opcode, MLX5_CMD_OP_DESTROY_TIR);
 	MLX5_SET(destroy_tir_in, in, tirn, tirn);
 	MLX5_SET(destroy_tir_in, in, uid, uid);
-	mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+	mlx5_cmd_exec_in(dev, destroy_tir, in);
 }
 
 void mlx5_cmd_destroy_tis(struct mlx5_core_dev *dev, u32 tisn, u16 uid)
 {
-	u32 in[MLX5_ST_SZ_DW(destroy_tis_in)]   = {0};
-	u32 out[MLX5_ST_SZ_DW(destroy_tis_out)] = {0};
+	u32 in[MLX5_ST_SZ_DW(destroy_tis_in)] = {};
 
 	MLX5_SET(destroy_tis_in, in, opcode, MLX5_CMD_OP_DESTROY_TIS);
 	MLX5_SET(destroy_tis_in, in, tisn, tisn);
 	MLX5_SET(destroy_tis_in, in, uid, uid);
-	mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+	mlx5_cmd_exec_in(dev, destroy_tis, in);
 }
 
 void mlx5_cmd_destroy_rqt(struct mlx5_core_dev *dev, u32 rqtn, u16 uid)
 {
-	u32 in[MLX5_ST_SZ_DW(destroy_rqt_in)]   = {};
-	u32 out[MLX5_ST_SZ_DW(destroy_rqt_out)] = {};
+	u32 in[MLX5_ST_SZ_DW(destroy_rqt_in)] = {};
 
 	MLX5_SET(destroy_rqt_in, in, opcode, MLX5_CMD_OP_DESTROY_RQT);
 	MLX5_SET(destroy_rqt_in, in, rqtn, rqtn);
 	MLX5_SET(destroy_rqt_in, in, uid, uid);
-	mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+	mlx5_cmd_exec_in(dev, destroy_rqt, in);
 }
 
 int mlx5_cmd_alloc_transport_domain(struct mlx5_core_dev *dev, u32 *tdn,
 				    u16 uid)
 {
-	u32 in[MLX5_ST_SZ_DW(alloc_transport_domain_in)]   = {0};
-	u32 out[MLX5_ST_SZ_DW(alloc_transport_domain_out)] = {0};
+	u32 in[MLX5_ST_SZ_DW(alloc_transport_domain_in)] = {};
+	u32 out[MLX5_ST_SZ_DW(alloc_transport_domain_out)] = {};
 	int err;
 
 	MLX5_SET(alloc_transport_domain_in, in, opcode,
 		 MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN);
 	MLX5_SET(alloc_transport_domain_in, in, uid, uid);
 
-	err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+	err = mlx5_cmd_exec_inout(dev, alloc_transport_domain, in, out);
 	if (!err)
 		*tdn = MLX5_GET(alloc_transport_domain_out, out,
 				transport_domain);
@@ -251,80 +212,75 @@ int mlx5_cmd_alloc_transport_domain(struct mlx5_core_dev *dev, u32 *tdn,
 void mlx5_cmd_dealloc_transport_domain(struct mlx5_core_dev *dev, u32 tdn,
 				       u16 uid)
 {
-	u32 in[MLX5_ST_SZ_DW(dealloc_transport_domain_in)]   = {0};
-	u32 out[MLX5_ST_SZ_DW(dealloc_transport_domain_out)] = {0};
+	u32 in[MLX5_ST_SZ_DW(dealloc_transport_domain_in)] = {};
 
 	MLX5_SET(dealloc_transport_domain_in, in, opcode,
 		 MLX5_CMD_OP_DEALLOC_TRANSPORT_DOMAIN);
 	MLX5_SET(dealloc_transport_domain_in, in, uid, uid);
 	MLX5_SET(dealloc_transport_domain_in, in, transport_domain, tdn);
-	mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+	mlx5_cmd_exec_in(dev, dealloc_transport_domain, in);
 }
 
 void mlx5_cmd_dealloc_pd(struct mlx5_core_dev *dev, u32 pdn, u16 uid)
 {
-	u32 out[MLX5_ST_SZ_DW(dealloc_pd_out)] = {};
-	u32 in[MLX5_ST_SZ_DW(dealloc_pd_in)]   = {};
+	u32 in[MLX5_ST_SZ_DW(dealloc_pd_in)] = {};
 
 	MLX5_SET(dealloc_pd_in, in, opcode, MLX5_CMD_OP_DEALLOC_PD);
 	MLX5_SET(dealloc_pd_in, in, pd, pdn);
 	MLX5_SET(dealloc_pd_in, in, uid, uid);
-	mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+	mlx5_cmd_exec_in(dev, dealloc_pd, in);
 }
 
 int mlx5_cmd_attach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid,
 			u32 qpn, u16 uid)
 {
-	u32 out[MLX5_ST_SZ_DW(attach_to_mcg_out)] = {};
-	u32 in[MLX5_ST_SZ_DW(attach_to_mcg_in)]   = {};
+	u32 in[MLX5_ST_SZ_DW(attach_to_mcg_in)] = {};
 	void *gid;
 
 	MLX5_SET(attach_to_mcg_in, in, opcode, MLX5_CMD_OP_ATTACH_TO_MCG);
 	MLX5_SET(attach_to_mcg_in, in, qpn, qpn);
 	MLX5_SET(attach_to_mcg_in, in, uid, uid);
 	gid = MLX5_ADDR_OF(attach_to_mcg_in, in, multicast_gid);
 	memcpy(gid, mgid, sizeof(*mgid));
-	return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+	return mlx5_cmd_exec_in(dev, attach_to_mcg, in);
 }
 
 int mlx5_cmd_detach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid,
 			u32 qpn, u16 uid)
 {
-	u32 out[MLX5_ST_SZ_DW(detach_from_mcg_out)] = {};
-	u32 in[MLX5_ST_SZ_DW(detach_from_mcg_in)]   = {};
+	u32 in[MLX5_ST_SZ_DW(detach_from_mcg_in)] = {};
 	void *gid;
 
 	MLX5_SET(detach_from_mcg_in, in, opcode, MLX5_CMD_OP_DETACH_FROM_MCG);
 	MLX5_SET(detach_from_mcg_in, in, qpn, qpn);
 	MLX5_SET(detach_from_mcg_in, in, uid, uid);
 	gid = MLX5_ADDR_OF(detach_from_mcg_in, in, multicast_gid);
 	memcpy(gid, mgid, sizeof(*mgid));
-	return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+	return mlx5_cmd_exec_in(dev, detach_from_mcg, in);
 }
 
 int mlx5_cmd_xrcd_alloc(struct mlx5_core_dev *dev, u32 *xrcdn, u16 uid)
 {
 	u32 out[MLX5_ST_SZ_DW(alloc_xrcd_out)] = {};
-	u32 in[MLX5_ST_SZ_DW(alloc_xrcd_in)]   = {};
+	u32 in[MLX5_ST_SZ_DW(alloc_xrcd_in)] = {};
 	int err;
 
 	MLX5_SET(alloc_xrcd_in, in, opcode, MLX5_CMD_OP_ALLOC_XRCD);
 	MLX5_SET(alloc_xrcd_in, in, uid, uid);
-	err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+	err = mlx5_cmd_exec_inout(dev, alloc_xrcd, in, out);
 	if (!err)
 		*xrcdn = MLX5_GET(alloc_xrcd_out, out, xrcd);
 	return err;
 }
 
 int mlx5_cmd_xrcd_dealloc(struct mlx5_core_dev *dev, u32 xrcdn, u16 uid)
 {
-	u32 out[MLX5_ST_SZ_DW(dealloc_xrcd_out)] = {};
-	u32 in[MLX5_ST_SZ_DW(dealloc_xrcd_in)]   = {};
+	u32 in[MLX5_ST_SZ_DW(dealloc_xrcd_in)] = {};
 
 	MLX5_SET(dealloc_xrcd_in, in, opcode, MLX5_CMD_OP_DEALLOC_XRCD);
 	MLX5_SET(dealloc_xrcd_in, in, xrcd, xrcdn);
 	MLX5_SET(dealloc_xrcd_in, in, uid, uid);
-	return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+	return mlx5_cmd_exec_in(dev, dealloc_xrcd, in);
 }
 
 int mlx5_cmd_mad_ifc(struct mlx5_core_dev *dev, const void *inb, void *outb,
@@ -350,7 +306,7 @@ int mlx5_cmd_mad_ifc(struct mlx5_core_dev *dev, const void *inb, void *outb,
 	data = MLX5_ADDR_OF(mad_ifc_in, in, mad);
 	memcpy(data, inb, MLX5_FLD_SZ_BYTES(mad_ifc_in, mad));
 
-	err = mlx5_cmd_exec(dev, in, inlen, out, outlen);
+	err = mlx5_cmd_exec_inout(dev, mad_ifc, in, out);
 	if (err)
 		goto out;
 

drivers/infiniband/hw/mlx5/cmd.h

@@ -40,10 +40,8 @@
 int mlx5_cmd_dump_fill_mkey(struct mlx5_core_dev *dev, u32 *mkey);
 int mlx5_cmd_null_mkey(struct mlx5_core_dev *dev, u32 *null_mkey);
 int mlx5_cmd_query_cong_params(struct mlx5_core_dev *dev, int cong_point,
-			       void *out, int out_size);
+			       void *out);
 int mlx5_cmd_query_ext_ppcnt_counters(struct mlx5_core_dev *dev, void *out);
-int mlx5_cmd_modify_cong_params(struct mlx5_core_dev *mdev,
-				void *in, int in_size);
 int mlx5_cmd_alloc_memic(struct mlx5_dm *dm, phys_addr_t *addr,
 			 u64 length, u32 alignment);
 void mlx5_cmd_dealloc_memic(struct mlx5_dm *dm, phys_addr_t addr, u64 length);

drivers/infiniband/hw/mlx5/cong.c

@@ -290,7 +290,7 @@ static int mlx5_ib_get_cc_params(struct mlx5_ib_dev *dev, u8 port_num,
 
 	node = mlx5_ib_param_to_node(offset);
 
-	err = mlx5_cmd_query_cong_params(mdev, node, out, outlen);
+	err = mlx5_cmd_query_cong_params(mdev, node, out);
 	if (err)
 		goto free;
 
@@ -339,7 +339,7 @@ static int mlx5_ib_set_cc_params(struct mlx5_ib_dev *dev, u8 port_num,
 	MLX5_SET(field_select_r_roce_rp, field, field_select_r_roce_rp,
 		 attr_mask);
 
-	err = mlx5_cmd_modify_cong_params(mdev, in, inlen);
+	err = mlx5_cmd_exec_in(dev->mdev, modify_cong_params, in);
 	kvfree(in);
 alloc_err:
 	mlx5_ib_put_native_port_mdev(dev, port_num + 1);

drivers/infiniband/hw/mlx5/main.c

@@ -2562,16 +2562,15 @@ static int mlx5_ib_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata)
 	struct mlx5_ib_alloc_pd_resp resp;
 	int err;
 	u32 out[MLX5_ST_SZ_DW(alloc_pd_out)] = {};
-	u32 in[MLX5_ST_SZ_DW(alloc_pd_in)]   = {};
+	u32 in[MLX5_ST_SZ_DW(alloc_pd_in)] = {};
 	u16 uid = 0;
 	struct mlx5_ib_ucontext *context = rdma_udata_to_drv_context(
 		udata, struct mlx5_ib_ucontext, ibucontext);
 
 	uid = context ? context->devx_uid : 0;
 	MLX5_SET(alloc_pd_in, in, opcode, MLX5_CMD_OP_ALLOC_PD);
 	MLX5_SET(alloc_pd_in, in, uid, uid);
-	err = mlx5_cmd_exec(to_mdev(ibdev)->mdev, in, sizeof(in),
-			    out, sizeof(out));
+	err = mlx5_cmd_exec_inout(to_mdev(ibdev)->mdev, alloc_pd, in, out);
 	if (err)
 		return err;
 

drivers/infiniband/hw/mlx5/odp.c

@@ -447,8 +447,7 @@ static void mlx5_ib_page_fault_resume(struct mlx5_ib_dev *dev,
 {
 	int wq_num = pfault->event_subtype == MLX5_PFAULT_SUBTYPE_WQE ?
 		     pfault->wqe.wq_num : pfault->token;
-	u32 out[MLX5_ST_SZ_DW(page_fault_resume_out)] = { };
-	u32 in[MLX5_ST_SZ_DW(page_fault_resume_in)]   = { };
+	u32 in[MLX5_ST_SZ_DW(page_fault_resume_in)] = {};
 	int err;
 
 	MLX5_SET(page_fault_resume_in, in, opcode, MLX5_CMD_OP_PAGE_FAULT_RESUME);
@@ -457,7 +456,7 @@ static void mlx5_ib_page_fault_resume(struct mlx5_ib_dev *dev,
 	MLX5_SET(page_fault_resume_in, in, wq_number, wq_num);
 	MLX5_SET(page_fault_resume_in, in, error, !!error);
 
-	err = mlx5_cmd_exec(dev->mdev, in, sizeof(in), out, sizeof(out));
+	err = mlx5_cmd_exec_in(dev->mdev, page_fault_resume, in);
 	if (err)
 		mlx5_ib_err(dev, "Failed to resolve the page fault on WQ 0x%x err %d\n",
 			    wq_num, err);