!993 Clean up for RDMA/HNS

Merge Pull Request from: @stinft 
 
https://gitee.com/openeuler/kernel/issues/I7A4LC 
 
Link:https://gitee.com/openeuler/kernel/pulls/993 

Reviewed-by: Chengchang Tang <tangchengchang@huawei.com> 
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com> 

drivers/infiniband/hw/hns/hns_roce_device.h

@@ -293,7 +293,6 @@ struct hns_roce_hem_table {
 	/* Single obj size */
 	unsigned long	obj_size;
 	unsigned long	table_chunk_size;
-	int		lowmem;
 	struct mutex	mutex;
 	struct hns_roce_hem **hem;
 	u64		**bt_l1;
@@ -795,7 +794,7 @@ struct hns_roce_caps {
 	u32		max_sq_sg;
 	u32		max_sq_inline;
 	u32		max_rq_sg;
-	u32		max_extend_sg;
+	u32		rsv0;
 	u32		num_qps;
 	u32		reserved_qps;
 	int		num_qpc_timer;
@@ -818,7 +817,7 @@ struct hns_roce_caps {
 	int		num_comp_vectors;
 	int		num_other_vectors;
 	u32		num_mtpts;
-	u32		num_mtt_segs;
+	u32		rsv1;
 	u32		num_srqwqe_segs;
 	u32		num_idx_segs;
 	int		reserved_mrws;

drivers/infiniband/hw/hns/hns_roce_hem.c

@@ -455,7 +455,7 @@ static int alloc_mhop_hem(struct hns_roce_dev *hr_dev,
 	 * alloc bt space chunk for MTT/CQE.
 	 */
 	size = table->type < HEM_TYPE_MTT ? mhop->buf_chunk_size : bt_size;
-	flag = (table->lowmem ? GFP_KERNEL : GFP_HIGHUSER) | __GFP_NOWARN;
+	flag = GFP_KERNEL | __GFP_NOWARN;
 	table->hem[index->buf] = hns_roce_alloc_hem(hr_dev, size >> PAGE_SHIFT,
 						    size, flag);
 	if (!table->hem[index->buf]) {
@@ -588,8 +588,7 @@ int hns_roce_table_get(struct hns_roce_dev *hr_dev,
 	table->hem[i] = hns_roce_alloc_hem(hr_dev,
 				       table->table_chunk_size >> PAGE_SHIFT,
 				       table->table_chunk_size,
-				       (table->lowmem ? GFP_KERNEL :
-					GFP_HIGHUSER) | __GFP_NOWARN);
+				       GFP_KERNEL | __GFP_NOWARN);
 	if (!table->hem[i]) {
 		ret = -ENOMEM;
 		goto out;
@@ -738,9 +737,6 @@ void *hns_roce_table_find(struct hns_roce_dev *hr_dev,
 	int length;
 	int i, j;
 
-	if (!table->lowmem)
-		return NULL;
-
 	mutex_lock(&table->mutex);
 
 	if (!hns_roce_check_whether_mhop(hr_dev, table->type)) {
@@ -796,8 +792,7 @@ void *hns_roce_table_find(struct hns_roce_dev *hr_dev,
 
 int hns_roce_init_hem_table(struct hns_roce_dev *hr_dev,
 			    struct hns_roce_hem_table *table, u32 type,
-			    unsigned long obj_size, unsigned long nobj,
-			    int use_lowmem)
+			    unsigned long obj_size, unsigned long nobj)
 {
 	unsigned long obj_per_chunk;
 	unsigned long num_hem;
@@ -874,7 +869,6 @@ int hns_roce_init_hem_table(struct hns_roce_dev *hr_dev,
 	table->type = type;
 	table->num_hem = num_hem;
 	table->obj_size = obj_size;
-	table->lowmem = use_lowmem;
 	mutex_init(&table->mutex);
 
 	return 0;

drivers/infiniband/hw/hns/hns_roce_hem.h

@@ -111,8 +111,7 @@ void *hns_roce_table_find(struct hns_roce_dev *hr_dev,
 			  dma_addr_t *dma_handle);
 int hns_roce_init_hem_table(struct hns_roce_dev *hr_dev,
 			    struct hns_roce_hem_table *table, u32 type,
-			    unsigned long obj_size, unsigned long nobj,
-			    int use_lowmem);
+			    unsigned long obj_size, unsigned long nobj);
 void hns_roce_cleanup_hem_table(struct hns_roce_dev *hr_dev,
 				struct hns_roce_hem_table *table);
 void hns_roce_cleanup_hem(struct hns_roce_dev *hr_dev);

drivers/infiniband/hw/hns/hns_roce_hw_v2.c

@@ -2257,7 +2257,6 @@ static void apply_func_caps(struct hns_roce_dev *hr_dev)
 	caps->qpc_timer_hop_num = HNS_ROCE_HOP_NUM_0;
 	caps->cqc_timer_hop_num = HNS_ROCE_HOP_NUM_0;
 
-	caps->num_mtt_segs = HNS_ROCE_V2_MAX_MTT_SEGS;
 	caps->num_srqwqe_segs = HNS_ROCE_V2_MAX_SRQWQE_SEGS;
 	caps->num_idx_segs = HNS_ROCE_V2_MAX_IDX_SEGS;
 
@@ -2347,7 +2346,6 @@ static int hns_roce_query_caps(struct hns_roce_dev *hr_dev)
 	caps->max_sq_inline = le16_to_cpu(resp_a->max_sq_inline);
 	caps->max_rq_sg = le16_to_cpu(resp_a->max_rq_sg);
 	caps->max_rq_sg = roundup_pow_of_two(caps->max_rq_sg);
-	caps->max_extend_sg = le32_to_cpu(resp_a->max_extend_sg);
 	caps->num_qpc_timer = le16_to_cpu(resp_a->num_qpc_timer);
 	caps->max_srq_sges = le16_to_cpu(resp_a->max_srq_sges);
 	caps->max_srq_sges = roundup_pow_of_two(caps->max_srq_sges);

drivers/infiniband/hw/hns/hns_roce_hw_v2.h

@@ -39,7 +39,6 @@
 #define HNS_ROCE_V2_MTT_ENTRY_SZ		64
 #define HNS_ROCE_V2_AEQE_VEC_NUM		1
 #define HNS_ROCE_V2_ABNORMAL_VEC_NUM		1
-#define HNS_ROCE_V2_MAX_MTT_SEGS		0x1000000
 #define HNS_ROCE_V2_MAX_SRQWQE_SEGS		0x1000000
 #define HNS_ROCE_V2_MAX_IDX_SEGS		0x1000000
 
@@ -1153,7 +1152,7 @@ struct hns_roce_query_pf_caps_a {
 	__le16 max_sq_sg;
 	__le16 max_sq_inline;
 	__le16 max_rq_sg;
-	__le32 max_extend_sg;
+	__le32 rsv0;
 	__le16 num_qpc_timer;
 	__le16 num_cqc_timer;
 	__le16 max_srq_sges;

drivers/infiniband/hw/hns/hns_roce_main.c

@@ -1105,7 +1105,7 @@ static int hns_roce_init_hem(struct hns_roce_dev *hr_dev)
 
 	ret = hns_roce_init_hem_table(hr_dev, &hr_dev->mr_table.mtpt_table,
 				      HEM_TYPE_MTPT, hr_dev->caps.mtpt_entry_sz,
-				      hr_dev->caps.num_mtpts, 1);
+				      hr_dev->caps.num_mtpts);
 	if (ret) {
 		dev_err(dev, "Failed to init MTPT context memory, aborting.\n");
 		return ret;
@@ -1113,7 +1113,7 @@ static int hns_roce_init_hem(struct hns_roce_dev *hr_dev)
 
 	ret = hns_roce_init_hem_table(hr_dev, &hr_dev->qp_table.qp_table,
 				      HEM_TYPE_QPC, hr_dev->caps.qpc_sz,
-				      hr_dev->caps.num_qps, 1);
+				      hr_dev->caps.num_qps);
 	if (ret) {
 		dev_err(dev, "Failed to init QP context memory, aborting.\n");
 		goto err_unmap_dmpt;
@@ -1123,7 +1123,7 @@ static int hns_roce_init_hem(struct hns_roce_dev *hr_dev)
 				      HEM_TYPE_IRRL,
 				      hr_dev->caps.irrl_entry_sz *
 				      hr_dev->caps.max_qp_init_rdma,
-				      hr_dev->caps.num_qps, 1);
+				      hr_dev->caps.num_qps);
 	if (ret) {
 		dev_err(dev, "Failed to init irrl_table memory, aborting.\n");
 		goto err_unmap_qp;
@@ -1135,7 +1135,7 @@ static int hns_roce_init_hem(struct hns_roce_dev *hr_dev)
 					      HEM_TYPE_TRRL,
 					      hr_dev->caps.trrl_entry_sz *
 					      hr_dev->caps.max_qp_dest_rdma,
-					      hr_dev->caps.num_qps, 1);
+					      hr_dev->caps.num_qps);
 		if (ret) {
 			dev_err(dev,
 				"Failed to init trrl_table memory, aborting.\n");
@@ -1145,7 +1145,7 @@ static int hns_roce_init_hem(struct hns_roce_dev *hr_dev)
 
 	ret = hns_roce_init_hem_table(hr_dev, &hr_dev->cq_table.table,
 				      HEM_TYPE_CQC, hr_dev->caps.cqc_entry_sz,
-				      hr_dev->caps.num_cqs, 1);
+				      hr_dev->caps.num_cqs);
 	if (ret) {
 		dev_err(dev, "Failed to init CQ context memory, aborting.\n");
 		goto err_unmap_trrl;
@@ -1155,7 +1155,7 @@ static int hns_roce_init_hem(struct hns_roce_dev *hr_dev)
 		ret = hns_roce_init_hem_table(hr_dev, &hr_dev->srq_table.table,
 					      HEM_TYPE_SRQC,
 					      hr_dev->caps.srqc_entry_sz,
-					      hr_dev->caps.num_srqs, 1);
+					      hr_dev->caps.num_srqs);
 		if (ret) {
 			dev_err(dev,
 				"Failed to init SRQ context memory, aborting.\n");
@@ -1168,7 +1168,7 @@ static int hns_roce_init_hem(struct hns_roce_dev *hr_dev)
 					      &hr_dev->qp_table.sccc_table,
 					      HEM_TYPE_SCCC,
 					      hr_dev->caps.sccc_sz,
-					      hr_dev->caps.num_qps, 1);
+					      hr_dev->caps.num_qps);
 		if (ret) {
 			dev_err(dev,
 				"Failed to init SCC context memory, aborting.\n");
@@ -1180,7 +1180,7 @@ static int hns_roce_init_hem(struct hns_roce_dev *hr_dev)
 		ret = hns_roce_init_hem_table(hr_dev, &hr_dev->qpc_timer_table,
 					      HEM_TYPE_QPC_TIMER,
 					      hr_dev->caps.qpc_timer_entry_sz,
-					      hr_dev->caps.num_qpc_timer, 1);
+					      hr_dev->caps.num_qpc_timer);
 		if (ret) {
 			dev_err(dev,
 				"Failed to init QPC timer memory, aborting.\n");
@@ -1192,7 +1192,7 @@ static int hns_roce_init_hem(struct hns_roce_dev *hr_dev)
 		ret = hns_roce_init_hem_table(hr_dev, &hr_dev->cqc_timer_table,
 					      HEM_TYPE_CQC_TIMER,
 					      hr_dev->caps.cqc_timer_entry_sz,
-					      hr_dev->caps.cqc_timer_bt_num, 1);
+					      hr_dev->caps.cqc_timer_bt_num);
 		if (ret) {
 			dev_err(dev,
 				"Failed to init CQC timer memory, aborting.\n");
@@ -1204,7 +1204,7 @@ static int hns_roce_init_hem(struct hns_roce_dev *hr_dev)
 		ret = hns_roce_init_hem_table(hr_dev, &hr_dev->gmv_table,
 					      HEM_TYPE_GMV,
 					      hr_dev->caps.gmv_entry_sz,
-					      hr_dev->caps.gmv_entry_num, 1);
+					      hr_dev->caps.gmv_entry_num);
 		if (ret) {
 			dev_err(dev,
 				"failed to init gmv table memory, ret = %d\n",