RDMA/irdma: Implement device supported verb APIs

Implement device supported verb APIs. The supported APIs
vary based on the underlying transport the ibdev is
registered as (i.e. iWARP or RoCEv2).

Link: https://lore.kernel.org/r/20210602205138.889-10-shiraz.saleem@intel.comSigned-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

drivers/infiniband/hw/irdma/verbs.h

+/* SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB */
+/* Copyright (c) 2015 - 2021 Intel Corporation */
+#ifndef IRDMA_VERBS_H
+#define IRDMA_VERBS_H
+
+#define IRDMA_MAX_SAVED_PHY_PGADDR	4
+
+#define IRDMA_PKEY_TBL_SZ		1
+#define IRDMA_DEFAULT_PKEY		0xFFFF
+
+struct irdma_ucontext {
+	struct ib_ucontext ibucontext;
+	struct irdma_device *iwdev;
+	struct rdma_user_mmap_entry *db_mmap_entry;
+	struct list_head cq_reg_mem_list;
+	spinlock_t cq_reg_mem_list_lock; /* protect CQ memory list */
+	struct list_head qp_reg_mem_list;
+	spinlock_t qp_reg_mem_list_lock; /* protect QP memory list */
+	int abi_ver;
+	bool legacy_mode;
+};
+
+struct irdma_pd {
+	struct ib_pd ibpd;
+	struct irdma_sc_pd sc_pd;
+};
+
+struct irdma_av {
+	u8 macaddr[16];
+	struct rdma_ah_attr attrs;
+	union {
+		struct sockaddr saddr;
+		struct sockaddr_in saddr_in;
+		struct sockaddr_in6 saddr_in6;
+	} sgid_addr, dgid_addr;
+	u8 net_type;
+};
+
+struct irdma_ah {
+	struct ib_ah ibah;
+	struct irdma_sc_ah sc_ah;
+	struct irdma_pd *pd;
+	struct irdma_av av;
+	u8 sgid_index;
+	union ib_gid dgid;
+};
+
+struct irdma_hmc_pble {
+	union {
+		u32 idx;
+		dma_addr_t addr;
+	};
+};
+
+struct irdma_cq_mr {
+	struct irdma_hmc_pble cq_pbl;
+	dma_addr_t shadow;
+	bool split;
+};
+
+struct irdma_qp_mr {
+	struct irdma_hmc_pble sq_pbl;
+	struct irdma_hmc_pble rq_pbl;
+	dma_addr_t shadow;
+	struct page *sq_page;
+};
+
+struct irdma_cq_buf {
+	struct irdma_dma_mem kmem_buf;
+	struct irdma_cq_uk cq_uk;
+	struct irdma_hw *hw;
+	struct list_head list;
+	struct work_struct work;
+};
+
+struct irdma_pbl {
+	struct list_head list;
+	union {
+		struct irdma_qp_mr qp_mr;
+		struct irdma_cq_mr cq_mr;
+	};
+
+	bool pbl_allocated:1;
+	bool on_list:1;
+	u64 user_base;
+	struct irdma_pble_alloc pble_alloc;
+	struct irdma_mr *iwmr;
+};
+
+struct irdma_mr {
+	union {
+		struct ib_mr ibmr;
+		struct ib_mw ibmw;
+	};
+	struct ib_umem *region;
+	u16 type;
+	u32 page_cnt;
+	u64 page_size;
+	u32 npages;
+	u32 stag;
+	u64 len;
+	u64 pgaddrmem[IRDMA_MAX_SAVED_PHY_PGADDR];
+	struct irdma_pbl iwpbl;
+};
+
+struct irdma_cq {
+	struct ib_cq ibcq;
+	struct irdma_sc_cq sc_cq;
+	u16 cq_head;
+	u16 cq_size;
+	u16 cq_num;
+	bool user_mode;
+	u32 polled_cmpls;
+	u32 cq_mem_size;
+	struct irdma_dma_mem kmem;
+	struct irdma_dma_mem kmem_shadow;
+	spinlock_t lock; /* for poll cq */
+	struct irdma_pbl *iwpbl;
+	struct irdma_pbl *iwpbl_shadow;
+	struct list_head resize_list;
+	struct irdma_cq_poll_info cur_cqe;
+};
+
+struct disconn_work {
+	struct work_struct work;
+	struct irdma_qp *iwqp;
+};
+
+struct iw_cm_id;
+
+struct irdma_qp_kmode {
+	struct irdma_dma_mem dma_mem;
+	struct irdma_sq_uk_wr_trk_info *sq_wrid_mem;
+	u64 *rq_wrid_mem;
+};
+
+struct irdma_qp {
+	struct ib_qp ibqp;
+	struct irdma_sc_qp sc_qp;
+	struct irdma_device *iwdev;
+	struct irdma_cq *iwscq;
+	struct irdma_cq *iwrcq;
+	struct irdma_pd *iwpd;
+	struct rdma_user_mmap_entry *push_wqe_mmap_entry;
+	struct rdma_user_mmap_entry *push_db_mmap_entry;
+	struct irdma_qp_host_ctx_info ctx_info;
+	union {
+		struct irdma_iwarp_offload_info iwarp_info;
+		struct irdma_roce_offload_info roce_info;
+	};
+
+	union {
+		struct irdma_tcp_offload_info tcp_info;
+		struct irdma_udp_offload_info udp_info;
+	};
+
+	struct irdma_ah roce_ah;
+	struct list_head teardown_entry;
+	refcount_t refcnt;
+	struct iw_cm_id *cm_id;
+	struct irdma_cm_node *cm_node;
+	struct ib_mr *lsmm_mr;
+	atomic_t hw_mod_qp_pend;
+	enum ib_qp_state ibqp_state;
+	u32 qp_mem_size;
+	u32 last_aeq;
+	int max_send_wr;
+	int max_recv_wr;
+	atomic_t close_timer_started;
+	spinlock_t lock; /* serialize posting WRs to SQ/RQ */
+	struct irdma_qp_context *iwqp_context;
+	void *pbl_vbase;
+	dma_addr_t pbl_pbase;
+	struct page *page;
+	u8 active_conn : 1;
+	u8 user_mode : 1;
+	u8 hte_added : 1;
+	u8 flush_issued : 1;
+	u8 sig_all : 1;
+	u8 pau_mode : 1;
+	u8 rsvd : 1;
+	u8 iwarp_state;
+	u16 term_sq_flush_code;
+	u16 term_rq_flush_code;
+	u8 hw_iwarp_state;
+	u8 hw_tcp_state;
+	struct irdma_qp_kmode kqp;
+	struct irdma_dma_mem host_ctx;
+	struct timer_list terminate_timer;
+	struct irdma_pbl *iwpbl;
+	struct irdma_dma_mem q2_ctx_mem;
+	struct irdma_dma_mem ietf_mem;
+	struct completion free_qp;
+	wait_queue_head_t waitq;
+	wait_queue_head_t mod_qp_waitq;
+	u8 rts_ae_rcvd;
+};
+
+enum irdma_mmap_flag {
+	IRDMA_MMAP_IO_NC,
+	IRDMA_MMAP_IO_WC,
+};
+
+struct irdma_user_mmap_entry {
+	struct rdma_user_mmap_entry rdma_entry;
+	u64 bar_offset;
+	u8 mmap_flag;
+};
+
+static inline u16 irdma_fw_major_ver(struct irdma_sc_dev *dev)
+{
+	return (u16)FIELD_GET(IRDMA_FW_VER_MAJOR, dev->feature_info[IRDMA_FEATURE_FW_INFO]);
+}
+
+static inline u16 irdma_fw_minor_ver(struct irdma_sc_dev *dev)
+{
+	return (u16)FIELD_GET(IRDMA_FW_VER_MINOR, dev->feature_info[IRDMA_FEATURE_FW_INFO]);
+}
+
+void irdma_mcast_mac(u32 *ip_addr, u8 *mac, bool ipv4);
+int irdma_ib_register_device(struct irdma_device *iwdev);
+void irdma_ib_unregister_device(struct irdma_device *iwdev);
+void irdma_ib_dealloc_device(struct ib_device *ibdev);
+void irdma_ib_qp_event(struct irdma_qp *iwqp, enum irdma_qp_event_type event);
+#endif /* IRDMA_VERBS_H */

include/uapi/rdma/ib_user_ioctl_verbs.h

@@ -240,6 +240,7 @@ enum rdma_driver_id {
 	RDMA_DRIVER_OCRDMA,
 	RDMA_DRIVER_NES,
 	RDMA_DRIVER_I40IW,
+	RDMA_DRIVER_IRDMA = RDMA_DRIVER_I40IW,
 	RDMA_DRIVER_VMW_PVRDMA,
 	RDMA_DRIVER_QEDR,
 	RDMA_DRIVER_HNS,