diff options
Diffstat (limited to 'drivers/staging/rdma/hfi1/verbs.h')
| -rw-r--r-- | drivers/staging/rdma/hfi1/verbs.h | 530 |
1 files changed, 0 insertions, 530 deletions
diff --git a/drivers/staging/rdma/hfi1/verbs.h b/drivers/staging/rdma/hfi1/verbs.h deleted file mode 100644 index 3ee223983b20..000000000000 --- a/drivers/staging/rdma/hfi1/verbs.h +++ /dev/null @@ -1,530 +0,0 @@ -/* - * Copyright(c) 2015, 2016 Intel Corporation. - * - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * BSD LICENSE - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * - Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -#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/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" - -#define HFI1_MAX_RDMA_ATOMIC 16 -#define HFI1_GUIDS_PER_PORT 5 - -/* - * Increment this value if any changes that break userspace ABI - * compatibility are made. - */ -#define HFI1_UVERBS_ABI_VERSION 2 - -#define IB_SEQ_NAK (3 << 29) - -/* AETH NAK opcode values */ -#define IB_RNR_NAK 0x20 -#define IB_NAK_PSN_ERROR 0x60 -#define IB_NAK_INVALID_REQUEST 0x61 -#define IB_NAK_REMOTE_ACCESS_ERROR 0x62 -#define IB_NAK_REMOTE_OPERATIONAL_ERROR 0x63 -#define IB_NAK_INVALID_RD_REQUEST 0x64 - -/* 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_BTH_REQ_ACK BIT(31) -#define IB_BTH_SOLICITED BIT(23) -#define IB_BTH_MIG_REQ BIT(22) - -#define IB_GRH_VERSION 6 -#define IB_GRH_VERSION_MASK 0xF -#define IB_GRH_VERSION_SHIFT 28 -#define IB_GRH_TCLASS_MASK 0xFF -#define IB_GRH_TCLASS_SHIFT 20 -#define IB_GRH_FLOW_MASK 0xFFFFF -#define IB_GRH_FLOW_SHIFT 0 -#define IB_GRH_NEXT_HDR 0x1B - -#define IB_DEFAULT_GID_PREFIX cpu_to_be64(0xfe80000000000000ULL) - -/* flags passed by hfi1_ib_rcv() */ -enum { - HFI1_HAS_GRH = (1 << 0), -}; - -struct ib_reth { - __be64 vaddr; - __be32 rkey; - __be32 length; -} __packed; - -struct ib_atomic_eth { - __be32 vaddr[2]; /* unaligned so access as 2 32-bit words */ - __be32 rkey; - __be64 swap_data; - __be64 compare_data; -} __packed; - -union ib_ehdrs { - struct { - __be32 deth[2]; - __be32 imm_data; - } ud; - struct { - struct ib_reth reth; - __be32 imm_data; - } rc; - struct { - __be32 aeth; - __be32 atomic_ack_eth[2]; - } at; - __be32 imm_data; - __be32 aeth; - struct ib_atomic_eth atomic_eth; -} __packed; - -struct hfi1_other_headers { - __be32 bth[3]; - union ib_ehdrs u; -} __packed; - -/* - * Note that UD packets with a GRH header are 8+40+12+8 = 68 bytes - * long (72 w/ imm_data). Only the first 56 bytes of the IB header - * will be in the eager header buffer. The remaining 12 or 16 bytes - * are in the data buffer. - */ -struct hfi1_ib_header { - __be16 lrh[4]; - union { - struct { - struct ib_grh grh; - struct hfi1_other_headers oth; - } l; - struct hfi1_other_headers oth; - } u; -} __packed; - -struct ahg_ib_header { - struct sdma_engine *sde; - u32 ahgdesc[2]; - u16 tx_flags; - u8 ahgcount; - u8 ahgidx; - struct hfi1_ib_header ibh; -}; - -struct hfi1_pio_header { - __le64 pbc; - struct hfi1_ib_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 ahg_ib_header *s_hdr; /* next header to send */ - struct sdma_engine *s_sde; /* current sde */ - struct send_context *s_sendcontext; /* current sendcontext */ - u8 s_sc; /* SC[0..4] for next packet */ - u8 r_adefered; /* number of acks defered */ - struct iowait s_iowait; - struct timer_list s_rnr_timer; - struct rvt_qp *owner; -}; - -/* - * This structure is used to hold commonly lookedup and computed values during - * the send engine progress. - */ -struct hfi1_pkt_state { - struct hfi1_ibdev *dev; - struct hfi1_ibport *ibp; - struct hfi1_pportdata *ppd; - struct verbs_txreq *s_txreq; - unsigned long flags; -}; - -#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; - - __be64 guids[HFI1_GUIDS_PER_PORT - 1]; /* writable GUIDs */ - - /* 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 wait lists */ - seqlock_t iowait_lock; - struct list_head txwait; /* list for wait verbs_txreq */ - struct list_head memwait; /* list for wait kernel memory */ - struct list_head txreq_free; - struct kmem_cache *verbs_txreq_cache; - struct timer_list mem_timer; - - u64 n_piowait; - u64 n_piodrain; - u64 n_txwait; - u64 n_kmem_wait; - -#ifdef CONFIG_DEBUG_FS - /* per HFI debugfs */ - struct dentry *hfi1_ibdev_dbg; - /* per HFI symlinks to above */ - struct dentry *hfi1_ibdev_link; -#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; -} - -/* - * Send if not busy or waiting for I/O and either - * a RC response is pending or we can process send work requests. - */ -static inline int hfi1_send_ok(struct rvt_qp *qp) -{ - return !(qp->s_flags & (RVT_S_BUSY | RVT_S_ANY_WAIT_IO)) && - (qp->s_hdrwords || (qp->s_flags & RVT_S_RESP_PENDING) || - !(qp->s_flags & RVT_S_ANY_WAIT_SEND)); -} - -/* - * This must be called with s_lock held. - */ -void hfi1_bad_pqkey(struct hfi1_ibport *ibp, __be16 trap_num, u32 key, u32 sl, - u32 qp1, u32 qp2, u16 lid1, u16 lid2); -void hfi1_cap_mask_chg(struct rvt_dev_info *rdi, u8 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, u8 port, - const struct ib_wc *in_wc, const struct ib_grh *in_grh, - const struct ib_mad_hdr *in_mad, size_t in_mad_size, - struct ib_mad_hdr *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. - */ -#ifndef CONFIG_HFI1_VERBS_31BIT_PSN -#define PSN_MASK 0xFFFFFF -#define PSN_SHIFT 8 -#else -#define PSN_MASK 0x7FFFFFFF -#define PSN_SHIFT 1 -#endif -#define PSN_MODIFY_MASK 0xFFFFFF - -/* - * Compare the lower 24 bits of the msn values. - * Returns an integer <, ==, or > than zero. - */ -static inline int cmp_msn(u32 a, u32 b) -{ - return (((int)a) - ((int)b)) << 8; -} - -/* - * 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; -} - -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_copy_sge(struct rvt_sge_state *ss, void *data, u32 length, - int release, int copy_last); - -void hfi1_skip_sge(struct rvt_sge_state *ss, u32 length, int release); - -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_ib_header *hdr, - u32 rcv_flags, - struct rvt_qp *qp); - -u8 ah_to_sc(struct ib_device *ibdev, struct ib_ah_attr *ah_attr); - -struct ib_ah *hfi1_create_qp0_ah(struct hfi1_ibport *ibp, u16 dlid); - -void hfi1_rc_rnr_retry(unsigned long arg); -void hfi1_add_rnr_timer(struct rvt_qp *qp, u32 to); -void hfi1_rc_timeout(unsigned long arg); -void hfi1_del_timers_sync(struct rvt_qp *qp); -void hfi1_stop_rc_timers(struct rvt_qp *qp); - -void hfi1_rc_send_complete(struct rvt_qp *qp, struct hfi1_ib_header *hdr); - -void hfi1_rc_error(struct rvt_qp *qp, enum ib_wc_status err); - -void hfi1_ud_rcv(struct hfi1_packet *packet); - -int hfi1_lookup_pkey_idx(struct hfi1_ibport *ibp, u16 pkey); - -int hfi1_rvt_get_rwqe(struct rvt_qp *qp, int wr_id_only); - -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); - -int hfi1_check_send_wqe(struct rvt_qp *qp, struct rvt_swqe *wqe); - -extern const u32 rc_only_opcode; -extern const u32 uc_only_opcode; - -static inline u8 get_opcode(struct hfi1_ib_header *h) -{ - u16 lnh = be16_to_cpu(h->lrh[0]) & 3; - - if (lnh == IB_LNH_IBA_LOCAL) - return be32_to_cpu(h->u.oth.bth[0]) >> 24; - else - return be32_to_cpu(h->u.l.oth.bth[0]) >> 24; -} - -int hfi1_ruc_check_hdr(struct hfi1_ibport *ibp, struct hfi1_ib_header *hdr, - int has_grh, struct rvt_qp *qp, u32 bth0); - -u32 hfi1_make_grh(struct hfi1_ibport *ibp, struct ib_grh *hdr, - struct ib_global_route *grh, u32 hwords, u32 nwords); - -void hfi1_make_ruc_header(struct rvt_qp *qp, struct hfi1_other_headers *ohdr, - u32 bth0, u32 bth2, int middle, - struct hfi1_pkt_state *ps); - -void _hfi1_do_send(struct work_struct *work); - -void hfi1_do_send(struct rvt_qp *qp); - -void hfi1_send_complete(struct rvt_qp *qp, struct rvt_swqe *wqe, - enum ib_wc_status status); - -void hfi1_send_rc_ack(struct hfi1_ctxtdata *, struct rvt_qp *qp, int 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_ib_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); - -int hfi1_wss_init(void); -void hfi1_wss_exit(void); - -/* platform specific: return the lowest level cache (llc) size, in KiB */ -static inline int wss_llc_size(void) -{ - /* assume that the boot CPU value is universal for all CPUs */ - return boot_cpu_data.x86_cache_size; -} - -/* platform specific: cacheless copy */ -static inline void cacheless_memcpy(void *dst, void *src, size_t n) -{ - /* - * Use the only available X64 cacheless copy. Add a __user cast - * to quiet sparse. The src agument is already in the kernel so - * there are no security issues. The extra fault recovery machinery - * is not invoked. - */ - __copy_user_nocache(dst, (void __user *)src, n, 0); -} - -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 */ |