Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 487 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/hfi1/verbs.h b/drivers/infiniband/hw/hfi1/verbs.h
new file mode 100644
index 000000000..7f30f32b3
--- /dev/null
+++ b/drivers/infiniband/hw/hfi1/verbs.h
@@ -0,0 +1,487 @@
+/* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */
+/*
+ * Copyright(c) 2015 - 2018 Intel Corporation.
+ */
+
+#ifndef HFI1_VERBS_H
+#define HFI1_VERBS_H
+
+#include <linux/types.h>
+#include <linux/seqlock.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/kref.h>
+#include <linux/workqueue.h>
+#include <linux/kthread.h>
+#include <linux/completion.h>
+#include <linux/slab.h>
+#include <rdma/ib_pack.h>
+#include <rdma/ib_user_verbs.h>
+#include <rdma/ib_mad.h>
+#include <rdma/ib_hdrs.h>
+#include <rdma/rdma_vt.h>
+#include <rdma/rdmavt_qp.h>
+#include <rdma/rdmavt_cq.h>
+
+struct hfi1_ctxtdata;
+struct hfi1_pportdata;
+struct hfi1_devdata;
+struct hfi1_packet;
+
+#include "iowait.h"
+#include "tid_rdma.h"
+#include "opfn.h"
+
+#define HFI1_MAX_RDMA_ATOMIC     16
+
+/*
+ * Increment this value if any changes that break userspace ABI
+ * compatibility are made.
+ */
+#define HFI1_UVERBS_ABI_VERSION       2
+
+/* IB Performance Manager status values */
+#define IB_PMA_SAMPLE_STATUS_DONE       0x00
+#define IB_PMA_SAMPLE_STATUS_STARTED    0x01
+#define IB_PMA_SAMPLE_STATUS_RUNNING    0x02
+
+/* Mandatory IB performance counter select values. */
+#define IB_PMA_PORT_XMIT_DATA   cpu_to_be16(0x0001)
+#define IB_PMA_PORT_RCV_DATA    cpu_to_be16(0x0002)
+#define IB_PMA_PORT_XMIT_PKTS   cpu_to_be16(0x0003)
+#define IB_PMA_PORT_RCV_PKTS    cpu_to_be16(0x0004)
+#define IB_PMA_PORT_XMIT_WAIT   cpu_to_be16(0x0005)
+
+#define HFI1_VENDOR_IPG		cpu_to_be16(0xFFA0)
+
+#define IB_DEFAULT_GID_PREFIX	cpu_to_be64(0xfe80000000000000ULL)
+#define OPA_BTH_MIG_REQ		BIT(31)
+
+#define RC_OP(x) IB_OPCODE_RC_##x
+#define UC_OP(x) IB_OPCODE_UC_##x
+
+/* flags passed by hfi1_ib_rcv() */
+enum {
+	HFI1_HAS_GRH = (1 << 0),
+};
+
+#define LRH_16B_BYTES (sizeof_field(struct hfi1_16b_header, lrh))
+#define LRH_16B_DWORDS (LRH_16B_BYTES / sizeof(u32))
+#define LRH_9B_BYTES (sizeof_field(struct ib_header, lrh))
+#define LRH_9B_DWORDS (LRH_9B_BYTES / sizeof(u32))
+
+/* 24Bits for qpn, upper 8Bits reserved */
+struct opa_16b_mgmt {
+	__be32 dest_qpn;
+	__be32 src_qpn;
+};
+
+struct hfi1_16b_header {
+	u32 lrh[4];
+	union {
+		struct {
+			struct ib_grh grh;
+			struct ib_other_headers oth;
+		} l;
+		struct ib_other_headers oth;
+		struct opa_16b_mgmt mgmt;
+	} u;
+} __packed;
+
+struct hfi1_opa_header {
+	union {
+		struct ib_header ibh; /* 9B header */
+		struct hfi1_16b_header opah; /* 16B header */
+	};
+	u8 hdr_type; /* 9B or 16B */
+} __packed;
+
+struct hfi1_ahg_info {
+	u32 ahgdesc[2];
+	u16 tx_flags;
+	u8 ahgcount;
+	u8 ahgidx;
+};
+
+struct hfi1_sdma_header {
+	__le64 pbc;
+	struct hfi1_opa_header hdr;
+} __packed;
+
+/*
+ * hfi1 specific data structures that will be hidden from rvt after the queue
+ * pair is made common
+ */
+struct hfi1_qp_priv {
+	struct hfi1_ahg_info *s_ahg;              /* ahg info for next header */
+	struct sdma_engine *s_sde;                /* current sde */
+	struct send_context *s_sendcontext;       /* current sendcontext */
+	struct hfi1_ctxtdata *rcd;                /* QP's receive context */
+	struct page **pages;                      /* for TID page scan */
+	u32 tid_enqueue;                          /* saved when tid waited */
+	u8 s_sc;		                  /* SC[0..4] for next packet */
+	struct iowait s_iowait;
+	struct timer_list s_tid_timer;            /* for timing tid wait */
+	struct timer_list s_tid_retry_timer;      /* for timing tid ack */
+	struct list_head tid_wait;                /* for queueing tid space */
+	struct hfi1_opfn_data opfn;
+	struct tid_flow_state flow_state;
+	struct tid_rdma_qp_params tid_rdma;
+	struct rvt_qp *owner;
+	u16 s_running_pkt_size;
+	u8 hdr_type; /* 9B or 16B */
+	struct rvt_sge_state tid_ss;       /* SGE state pointer for 2nd leg */
+	atomic_t n_requests;               /* # of TID RDMA requests in the */
+					   /* queue */
+	atomic_t n_tid_requests;            /* # of sent TID RDMA requests */
+	unsigned long tid_timer_timeout_jiffies;
+	unsigned long tid_retry_timeout_jiffies;
+
+	/* variables for the TID RDMA SE state machine */
+	u8 s_state;
+	u8 s_retry;
+	u8 rnr_nak_state;       /* RNR NAK state */
+	u8 s_nak_state;
+	u32 s_nak_psn;
+	u32 s_flags;
+	u32 s_tid_cur;
+	u32 s_tid_head;
+	u32 s_tid_tail;
+	u32 r_tid_head;     /* Most recently added TID RDMA request */
+	u32 r_tid_tail;     /* the last completed TID RDMA request */
+	u32 r_tid_ack;      /* the TID RDMA request to be ACK'ed */
+	u32 r_tid_alloc;    /* Request for which we are allocating resources */
+	u32 pending_tid_w_segs; /* Num of pending tid write segments */
+	u32 pending_tid_w_resp; /* Num of pending tid write responses */
+	u32 alloc_w_segs;       /* Number of segments for which write */
+			       /* resources have been allocated for this QP */
+
+	/* For TID RDMA READ */
+	u32 tid_r_reqs;         /* Num of tid reads requested */
+	u32 tid_r_comp;         /* Num of tid reads completed */
+	u32 pending_tid_r_segs; /* Num of pending tid read segments */
+	u16 pkts_ps;            /* packets per segment */
+	u8 timeout_shift;       /* account for number of packets per segment */
+
+	u32 r_next_psn_kdeth;
+	u32 r_next_psn_kdeth_save;
+	u32 s_resync_psn;
+	u8 sync_pt;           /* Set when QP reaches sync point */
+	u8 resync;
+};
+
+#define HFI1_QP_WQE_INVALID   ((u32)-1)
+
+struct hfi1_swqe_priv {
+	struct tid_rdma_request tid_req;
+	struct rvt_sge_state ss;  /* Used for TID RDMA READ Request */
+};
+
+struct hfi1_ack_priv {
+	struct rvt_sge_state ss;               /* used for TID WRITE RESP */
+	struct tid_rdma_request tid_req;
+};
+
+/*
+ * This structure is used to hold commonly lookedup and computed values during
+ * the send engine progress.
+ */
+struct iowait_work;
+struct hfi1_pkt_state {
+	struct hfi1_ibdev *dev;
+	struct hfi1_ibport *ibp;
+	struct hfi1_pportdata *ppd;
+	struct verbs_txreq *s_txreq;
+	struct iowait_work *wait;
+	unsigned long flags;
+	unsigned long timeout;
+	unsigned long timeout_int;
+	int cpu;
+	u8 opcode;
+	bool in_thread;
+	bool pkts_sent;
+};
+
+#define HFI1_PSN_CREDIT  16
+
+struct hfi1_opcode_stats {
+	u64 n_packets;          /* number of packets */
+	u64 n_bytes;            /* total number of bytes */
+};
+
+struct hfi1_opcode_stats_perctx {
+	struct hfi1_opcode_stats stats[256];
+};
+
+static inline void inc_opstats(
+	u32 tlen,
+	struct hfi1_opcode_stats *stats)
+{
+#ifdef CONFIG_DEBUG_FS
+	stats->n_bytes += tlen;
+	stats->n_packets++;
+#endif
+}
+
+struct hfi1_ibport {
+	struct rvt_qp __rcu *qp[2];
+	struct rvt_ibport rvp;
+
+	/* the first 16 entries are sl_to_vl for !OPA */
+	u8 sl_to_sc[32];
+	u8 sc_to_sl[32];
+};
+
+struct hfi1_ibdev {
+	struct rvt_dev_info rdi; /* Must be first */
+
+	/* QP numbers are shared by all IB ports */
+	/* protect txwait list */
+	seqlock_t txwait_lock ____cacheline_aligned_in_smp;
+	struct list_head txwait;        /* list for wait verbs_txreq */
+	struct list_head memwait;       /* list for wait kernel memory */
+	struct kmem_cache *verbs_txreq_cache;
+	u64 n_txwait;
+	u64 n_kmem_wait;
+	u64 n_tidwait;
+
+	/* protect iowait lists */
+	seqlock_t iowait_lock ____cacheline_aligned_in_smp;
+	u64 n_piowait;
+	u64 n_piodrain;
+	struct timer_list mem_timer;
+
+#ifdef CONFIG_DEBUG_FS
+	/* per HFI debugfs */
+	struct dentry *hfi1_ibdev_dbg;
+	/* per HFI symlinks to above */
+	struct dentry *hfi1_ibdev_link;
+#ifdef CONFIG_FAULT_INJECTION
+	struct fault *fault;
+#endif
+#endif
+};
+
+static inline struct hfi1_ibdev *to_idev(struct ib_device *ibdev)
+{
+	struct rvt_dev_info *rdi;
+
+	rdi = container_of(ibdev, struct rvt_dev_info, ibdev);
+	return container_of(rdi, struct hfi1_ibdev, rdi);
+}
+
+static inline struct rvt_qp *iowait_to_qp(struct iowait *s_iowait)
+{
+	struct hfi1_qp_priv *priv;
+
+	priv = container_of(s_iowait, struct hfi1_qp_priv, s_iowait);
+	return priv->owner;
+}
+
+/*
+ * This must be called with s_lock held.
+ */
+void hfi1_bad_pkey(struct hfi1_ibport *ibp, u32 key, u32 sl,
+		   u32 qp1, u32 qp2, u32 lid1, u32 lid2);
+void hfi1_cap_mask_chg(struct rvt_dev_info *rdi, u32 port_num);
+void hfi1_sys_guid_chg(struct hfi1_ibport *ibp);
+void hfi1_node_desc_chg(struct hfi1_ibport *ibp);
+int hfi1_process_mad(struct ib_device *ibdev, int mad_flags, u32 port,
+		     const struct ib_wc *in_wc, const struct ib_grh *in_grh,
+		     const struct ib_mad *in_mad, struct ib_mad *out_mad,
+		     size_t *out_mad_size, u16 *out_mad_pkey_index);
+
+/*
+ * The PSN_MASK and PSN_SHIFT allow for
+ * 1) comparing two PSNs
+ * 2) returning the PSN with any upper bits masked
+ * 3) returning the difference between to PSNs
+ *
+ * The number of significant bits in the PSN must
+ * necessarily be at least one bit less than
+ * the container holding the PSN.
+ */
+#define PSN_MASK 0x7FFFFFFF
+#define PSN_SHIFT 1
+#define PSN_MODIFY_MASK 0xFFFFFF
+
+/*
+ * Compare two PSNs
+ * Returns an integer <, ==, or > than zero.
+ */
+static inline int cmp_psn(u32 a, u32 b)
+{
+	return (((int)a) - ((int)b)) << PSN_SHIFT;
+}
+
+/*
+ * Return masked PSN
+ */
+static inline u32 mask_psn(u32 a)
+{
+	return a & PSN_MASK;
+}
+
+/*
+ * Return delta between two PSNs
+ */
+static inline u32 delta_psn(u32 a, u32 b)
+{
+	return (((int)a - (int)b) << PSN_SHIFT) >> PSN_SHIFT;
+}
+
+static inline struct tid_rdma_request *wqe_to_tid_req(struct rvt_swqe *wqe)
+{
+	return &((struct hfi1_swqe_priv *)wqe->priv)->tid_req;
+}
+
+static inline struct tid_rdma_request *ack_to_tid_req(struct rvt_ack_entry *e)
+{
+	return &((struct hfi1_ack_priv *)e->priv)->tid_req;
+}
+
+/*
+ * Look through all the active flows for a TID RDMA request and find
+ * the one (if it exists) that contains the specified PSN.
+ */
+static inline u32 __full_flow_psn(struct flow_state *state, u32 psn)
+{
+	return mask_psn((state->generation << HFI1_KDETH_BTH_SEQ_SHIFT) |
+			(psn & HFI1_KDETH_BTH_SEQ_MASK));
+}
+
+static inline u32 full_flow_psn(struct tid_rdma_flow *flow, u32 psn)
+{
+	return __full_flow_psn(&flow->flow_state, psn);
+}
+
+struct verbs_txreq;
+void hfi1_put_txreq(struct verbs_txreq *tx);
+
+int hfi1_verbs_send(struct rvt_qp *qp, struct hfi1_pkt_state *ps);
+
+void hfi1_cnp_rcv(struct hfi1_packet *packet);
+
+void hfi1_uc_rcv(struct hfi1_packet *packet);
+
+void hfi1_rc_rcv(struct hfi1_packet *packet);
+
+void hfi1_rc_hdrerr(
+	struct hfi1_ctxtdata *rcd,
+	struct hfi1_packet *packet,
+	struct rvt_qp *qp);
+
+u8 ah_to_sc(struct ib_device *ibdev, struct rdma_ah_attr *ah_attr);
+
+void hfi1_rc_verbs_aborted(struct rvt_qp *qp, struct hfi1_opa_header *opah);
+void hfi1_rc_send_complete(struct rvt_qp *qp, struct hfi1_opa_header *opah);
+
+void hfi1_ud_rcv(struct hfi1_packet *packet);
+
+int hfi1_lookup_pkey_idx(struct hfi1_ibport *ibp, u16 pkey);
+
+void hfi1_migrate_qp(struct rvt_qp *qp);
+
+int hfi1_check_modify_qp(struct rvt_qp *qp, struct ib_qp_attr *attr,
+			 int attr_mask, struct ib_udata *udata);
+
+void hfi1_modify_qp(struct rvt_qp *qp, struct ib_qp_attr *attr,
+		    int attr_mask, struct ib_udata *udata);
+void hfi1_restart_rc(struct rvt_qp *qp, u32 psn, int wait);
+int hfi1_setup_wqe(struct rvt_qp *qp, struct rvt_swqe *wqe,
+		   bool *call_send);
+
+int hfi1_ruc_check_hdr(struct hfi1_ibport *ibp, struct hfi1_packet *packet);
+
+u32 hfi1_make_grh(struct hfi1_ibport *ibp, struct ib_grh *hdr,
+		  const struct ib_global_route *grh, u32 hwords, u32 nwords);
+
+void hfi1_make_ruc_header(struct rvt_qp *qp, struct ib_other_headers *ohdr,
+			  u32 bth0, u32 bth1, u32 bth2, int middle,
+			  struct hfi1_pkt_state *ps);
+
+bool hfi1_schedule_send_yield(struct rvt_qp *qp, struct hfi1_pkt_state *ps,
+			      bool tid);
+
+void _hfi1_do_send(struct work_struct *work);
+
+void hfi1_do_send_from_rvt(struct rvt_qp *qp);
+
+void hfi1_do_send(struct rvt_qp *qp, bool in_thread);
+
+void hfi1_send_rc_ack(struct hfi1_packet *packet, bool is_fecn);
+
+int hfi1_make_rc_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps);
+
+int hfi1_make_uc_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps);
+
+int hfi1_make_ud_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps);
+
+int hfi1_register_ib_device(struct hfi1_devdata *);
+
+void hfi1_unregister_ib_device(struct hfi1_devdata *);
+
+void hfi1_kdeth_eager_rcv(struct hfi1_packet *packet);
+
+void hfi1_kdeth_expected_rcv(struct hfi1_packet *packet);
+
+void hfi1_ib_rcv(struct hfi1_packet *packet);
+
+void hfi1_16B_rcv(struct hfi1_packet *packet);
+
+unsigned hfi1_get_npkeys(struct hfi1_devdata *);
+
+int hfi1_verbs_send_dma(struct rvt_qp *qp, struct hfi1_pkt_state *ps,
+			u64 pbc);
+
+int hfi1_verbs_send_pio(struct rvt_qp *qp, struct hfi1_pkt_state *ps,
+			u64 pbc);
+
+static inline bool opa_bth_is_migration(struct ib_other_headers *ohdr)
+{
+	return ohdr->bth[1] & cpu_to_be32(OPA_BTH_MIG_REQ);
+}
+
+void hfi1_wait_kmem(struct rvt_qp *qp);
+
+static inline void hfi1_trdma_send_complete(struct rvt_qp *qp,
+					    struct rvt_swqe *wqe,
+					    enum ib_wc_status status)
+{
+	trdma_clean_swqe(qp, wqe);
+	rvt_send_complete(qp, wqe, status);
+}
+
+extern const enum ib_wc_opcode ib_hfi1_wc_opcode[];
+
+extern const u8 hdr_len_by_opcode[];
+
+extern const int ib_rvt_state_ops[];
+
+extern __be64 ib_hfi1_sys_image_guid;    /* in network order */
+
+extern unsigned int hfi1_max_cqes;
+
+extern unsigned int hfi1_max_cqs;
+
+extern unsigned int hfi1_max_qp_wrs;
+
+extern unsigned int hfi1_max_qps;
+
+extern unsigned int hfi1_max_sges;
+
+extern unsigned int hfi1_max_mcast_grps;
+
+extern unsigned int hfi1_max_mcast_qp_attached;
+
+extern unsigned int hfi1_max_srqs;
+
+extern unsigned int hfi1_max_srq_sges;
+
+extern unsigned int hfi1_max_srq_wrs;
+
+extern unsigned short piothreshold;
+
+extern const u32 ib_hfi1_rnr_table[];
+
+#endif                          /* HFI1_VERBS_H */