linux-kernel - [PATCH v3 for-rc 1/2] RDMA/hns: support get xrcd num from firmware

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Date:   Fri, 21 Jul 2023 10:51:45 +0800
From:   Junxian Huang <huangjunxian6@...ilicon.com>
To:     <jgg@...dia.com>, <leon@...nel.org>
CC:     <linux-rdma@...r.kernel.org>, <linuxarm@...wei.com>,
        <linux-kernel@...r.kernel.org>, <huangjunxian6@...ilicon.com>
Subject: [PATCH v3 for-rc 1/2] RDMA/hns: support get xrcd num from firmware

From: Luoyouming <luoyouming@...wei.com>

Support driver get the num of xrcd from firmware

Signed-off-by: Luoyouming <luoyouming@...wei.com>
Signed-off-by: Junxian Huang <huangjunxian6@...ilicon.com>
---
 drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 5 ++---
 drivers/infiniband/hw/hns/hns_roce_hw_v2.h | 3 ++-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index d4c6b9bc0a4e..fb3ce4af22b5 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -2093,9 +2093,6 @@ 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_xrcds = HNS_ROCE_V2_MAX_XRCD_NUM;
-	caps->reserved_xrcds = HNS_ROCE_V2_RSV_XRCD_NUM;
-
 	caps->num_srqwqe_segs = HNS_ROCE_V2_MAX_SRQWQE_SEGS;
 	caps->num_idx_segs = HNS_ROCE_V2_MAX_IDX_SEGS;
 
@@ -2218,6 +2215,7 @@ static int hns_roce_query_caps(struct hns_roce_dev *hr_dev)
 	caps->num_cqs = 1 << hr_reg_read(resp_c, PF_CAPS_C_NUM_CQS);
 	caps->gid_table_len[0] = hr_reg_read(resp_c, PF_CAPS_C_MAX_GID);
 	caps->max_cqes = 1 << hr_reg_read(resp_c, PF_CAPS_C_CQ_DEPTH);
+	caps->num_xrcds = 1 << hr_reg_read(resp_c, PF_CAPS_C_NUM_XRCDS);
 	caps->num_mtpts = 1 << hr_reg_read(resp_c, PF_CAPS_C_NUM_MRWS);
 	caps->num_qps = 1 << hr_reg_read(resp_c, PF_CAPS_C_NUM_QPS);
 	caps->max_qp_init_rdma = hr_reg_read(resp_c, PF_CAPS_C_MAX_ORD);
@@ -2238,6 +2236,7 @@ static int hns_roce_query_caps(struct hns_roce_dev *hr_dev)
 	caps->reserved_mrws = hr_reg_read(resp_e, PF_CAPS_E_RSV_MRWS);
 	caps->chunk_sz = 1 << hr_reg_read(resp_e, PF_CAPS_E_CHUNK_SIZE_SHIFT);
 	caps->reserved_cqs = hr_reg_read(resp_e, PF_CAPS_E_RSV_CQS);
+	caps->reserved_xrcds = hr_reg_read(resp_e, PF_CAPS_E_RSV_XRCDS);
 	caps->reserved_srqs = hr_reg_read(resp_e, PF_CAPS_E_RSV_SRQS);
 	caps->reserved_lkey = hr_reg_read(resp_e, PF_CAPS_E_RSV_LKEYS);
 
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
index 7033eae2407c..2b87f0cf06ec 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
@@ -42,7 +42,6 @@
 #define HNS_ROCE_V2_MAX_SRQWQE_SEGS		0x1000000
 #define HNS_ROCE_V2_MAX_IDX_SEGS		0x1000000
 #define HNS_ROCE_V2_MAX_XRCD_NUM		0x1000000
-#define HNS_ROCE_V2_RSV_XRCD_NUM		0
 
 #define HNS_ROCE_V2_QP_ACK_TIMEOUT_OFS_HIP08    10
 
@@ -1202,6 +1201,7 @@ struct hns_roce_query_pf_caps_c {
 #define PF_CAPS_C_NUM_CQS PF_CAPS_C_FIELD_LOC(51, 32)
 #define PF_CAPS_C_MAX_GID PF_CAPS_C_FIELD_LOC(60, 52)
 #define PF_CAPS_C_CQ_DEPTH PF_CAPS_C_FIELD_LOC(86, 64)
+#define PF_CAPS_C_NUM_XRCDS PF_CAPS_C_FIELD_LOC(91, 87)
 #define PF_CAPS_C_NUM_MRWS PF_CAPS_C_FIELD_LOC(115, 96)
 #define PF_CAPS_C_NUM_QPS PF_CAPS_C_FIELD_LOC(147, 128)
 #define PF_CAPS_C_MAX_ORD PF_CAPS_C_FIELD_LOC(155, 148)
@@ -1260,6 +1260,7 @@ struct hns_roce_query_pf_caps_e {
 #define PF_CAPS_E_RSV_MRWS PF_CAPS_E_FIELD_LOC(19, 0)
 #define PF_CAPS_E_CHUNK_SIZE_SHIFT PF_CAPS_E_FIELD_LOC(31, 20)
 #define PF_CAPS_E_RSV_CQS PF_CAPS_E_FIELD_LOC(51, 32)
+#define PF_CAPS_E_RSV_XRCDS PF_CAPS_E_FIELD_LOC(63, 52)
 #define PF_CAPS_E_RSV_SRQS PF_CAPS_E_FIELD_LOC(83, 64)
 #define PF_CAPS_E_RSV_LKEYS PF_CAPS_E_FIELD_LOC(115, 96)
 
-- 
2.30.0