RDMA/hns: Enable RoCE on virtual functions

Introduce the VF support by adding code changes to allow VF PCI device
initialization, assgining the reserved resource of the PF to the active
VFs, setting the default abilities, applying the interruptions, resetting
and reducing the default QP/GID number to aovid exceeding the hardware
limitation.

Link: https://lore.kernel.org/r/1617715514-29039-6-git-send-email-liweihang@huawei.comSigned-off-by: Wei Xu <xuwei5@hisilicon.com>
Signed-off-by: Shengming Shu <shushengming1@huawei.com>
Signed-off-by: Xi Wang <wangxi11@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/hw/hns/hns_roce_device.h

@@ -990,6 +990,7 @@ struct hns_roce_dev {
 	struct workqueue_struct *irq_workq;
 	const struct hns_roce_dfx_hw *dfx;
 	u32 func_num;
+	u32 is_vf;
 	u32 cong_algo_tmpl_id;
 };
 

drivers/infiniband/hw/hns/hns_roce_hw_v2.h

@@ -44,7 +44,7 @@
 #define HNS_ROCE_VF_SL_NUM			8
 #define HNS_ROCE_VF_GMV_BT_NUM			256
 
-#define HNS_ROCE_V2_MAX_QP_NUM			0x100000
+#define HNS_ROCE_V2_MAX_QP_NUM			0x1000
 #define HNS_ROCE_V2_MAX_QPC_TIMER_NUM		0x200
 #define HNS_ROCE_V2_MAX_WQE_NUM			0x8000
 #define	HNS_ROCE_V2_MAX_SRQ			0x100000
@@ -121,7 +121,7 @@
 
 #define HNS_ROCE_BA_PG_SZ_SUPPORTED_256K	6
 #define HNS_ROCE_BA_PG_SZ_SUPPORTED_16K		2
-#define HNS_ROCE_V2_GID_INDEX_NUM		256
+#define HNS_ROCE_V2_GID_INDEX_NUM		16
 
 #define HNS_ROCE_V2_TABLE_CHUNK_SIZE		(1 << 18)
 
@@ -247,6 +247,7 @@ enum hns_roce_opcode_type {
 	HNS_ROCE_OPC_CLR_SCCC				= 0x8509,
 	HNS_ROCE_OPC_QUERY_SCCC				= 0x850a,
 	HNS_ROCE_OPC_RESET_SCCC				= 0x850b,
+	HNS_ROCE_OPC_QUERY_VF_RES			= 0x850e,
 	HNS_ROCE_OPC_CFG_GMV_TBL			= 0x850f,
 	HNS_ROCE_OPC_CFG_GMV_BT				= 0x8510,
 	HNS_SWITCH_PARAMETER_CFG			= 0x1033,
@@ -1379,7 +1380,8 @@ struct hns_roce_cfg_llm_b {
 #define CFG_GLOBAL_PARAM_UDP_PORT CMQ_REQ_FIELD_LOC(31, 16)
 
 /*
- * Fields of HNS_ROCE_OPC_QUERY_PF_RES and HNS_ROCE_OPC_ALLOC_VF_RES
+ * Fields of HNS_ROCE_OPC_QUERY_PF_RES, HNS_ROCE_OPC_QUERY_VF_RES
+ * and HNS_ROCE_OPC_ALLOC_VF_RES
  */
 #define FUNC_RES_A_VF_ID CMQ_REQ_FIELD_LOC(7, 0)
 #define FUNC_RES_A_QPC_BT_IDX CMQ_REQ_FIELD_LOC(42, 32)