diff options
Diffstat (limited to 'drivers/infiniband/hw/qib/qib_verbs.h')
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_verbs.h | 1100 |
1 files changed, 1100 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/qib/qib_verbs.h b/drivers/infiniband/hw/qib/qib_verbs.h new file mode 100644 index 0000000..bd57c12 --- /dev/null +++ b/drivers/infiniband/hw/qib/qib_verbs.h @@ -0,0 +1,1100 @@ +/* + * Copyright (c) 2006, 2007, 2008, 2009, 2010 QLogic Corporation. + * All rights reserved. + * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * 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. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#ifndef QIB_VERBS_H +#define QIB_VERBS_H + +#include <linux/types.h> +#include <linux/spinlock.h> +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <linux/kref.h> +#include <linux/workqueue.h> +#include <rdma/ib_pack.h> +#include <rdma/ib_user_verbs.h> + +struct qib_ctxtdata; +struct qib_pportdata; +struct qib_devdata; +struct qib_verbs_txreq; + +#define QIB_MAX_RDMA_ATOMIC 16 +#define QIB_GUIDS_PER_PORT 5 + +#define QPN_MAX (1 << 24) +#define QPNMAP_ENTRIES (QPN_MAX / PAGE_SIZE / BITS_PER_BYTE) + +/* + * Increment this value if any changes that break userspace ABI + * compatibility are made. + */ +#define QIB_UVERBS_ABI_VERSION 2 + +/* + * Define an ib_cq_notify value that is not valid so we know when CQ + * notifications are armed. + */ +#define IB_CQ_NONE (IB_CQ_NEXT_COMP + 1) + +#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 + +/* Flags for checking QP state (see ib_qib_state_ops[]) */ +#define QIB_POST_SEND_OK 0x01 +#define QIB_POST_RECV_OK 0x02 +#define QIB_PROCESS_RECV_OK 0x04 +#define QIB_PROCESS_SEND_OK 0x08 +#define QIB_PROCESS_NEXT_SEND_OK 0x10 +#define QIB_FLUSH_SEND 0x20 +#define QIB_FLUSH_RECV 0x40 +#define QIB_PROCESS_OR_FLUSH_SEND \ + (QIB_PROCESS_SEND_OK | QIB_FLUSH_SEND) + +/* 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 QIB_VENDOR_IPG cpu_to_be16(0xFFA0) + +#define IB_BTH_REQ_ACK (1 << 31) +#define IB_BTH_SOLICITED (1 << 23) +#define IB_BTH_MIG_REQ (1 << 22) + +/* XXX Should be defined in ib_verbs.h enum ib_port_cap_flags */ +#define IB_PORT_OTHER_LOCAL_CHANGES_SUP (1 << 26) + +#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) + +/* Values for set/get portinfo VLCap OperationalVLs */ +#define IB_VL_VL0 1 +#define IB_VL_VL0_1 2 +#define IB_VL_VL0_3 3 +#define IB_VL_VL0_7 4 +#define IB_VL_VL0_14 5 + +static inline int qib_num_vls(int vls) +{ + switch (vls) { + default: + case IB_VL_VL0: + return 1; + case IB_VL_VL0_1: + return 2; + case IB_VL_VL0_3: + return 4; + case IB_VL_VL0_7: + return 8; + case IB_VL_VL0_14: + return 15; + } +} + +struct ib_reth { + __be64 vaddr; + __be32 rkey; + __be32 length; +} __attribute__ ((packed)); + +struct ib_atomic_eth { + __be32 vaddr[2]; /* unaligned so access as 2 32-bit words */ + __be32 rkey; + __be64 swap_data; + __be64 compare_data; +} __attribute__ ((packed)); + +struct qib_other_headers { + __be32 bth[3]; + union { + 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; + } u; +} __attribute__ ((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 qib_ib_header { + __be16 lrh[4]; + union { + struct { + struct ib_grh grh; + struct qib_other_headers oth; + } l; + struct qib_other_headers oth; + } u; +} __attribute__ ((packed)); + +struct qib_pio_header { + __le32 pbc[2]; + struct qib_ib_header hdr; +} __attribute__ ((packed)); + +/* + * There is one struct qib_mcast for each multicast GID. + * All attached QPs are then stored as a list of + * struct qib_mcast_qp. + */ +struct qib_mcast_qp { + struct list_head list; + struct qib_qp *qp; +}; + +struct qib_mcast { + struct rb_node rb_node; + union ib_gid mgid; + struct list_head qp_list; + wait_queue_head_t wait; + atomic_t refcount; + int n_attached; +}; + +/* Protection domain */ +struct qib_pd { + struct ib_pd ibpd; + int user; /* non-zero if created from user space */ +}; + +/* Address Handle */ +struct qib_ah { + struct ib_ah ibah; + struct ib_ah_attr attr; + atomic_t refcount; +}; + +/* + * This structure is used by qib_mmap() to validate an offset + * when an mmap() request is made. The vm_area_struct then uses + * this as its vm_private_data. + */ +struct qib_mmap_info { + struct list_head pending_mmaps; + struct ib_ucontext *context; + void *obj; + __u64 offset; + struct kref ref; + unsigned size; +}; + +/* + * This structure is used to contain the head pointer, tail pointer, + * and completion queue entries as a single memory allocation so + * it can be mmap'ed into user space. + */ +struct qib_cq_wc { + u32 head; /* index of next entry to fill */ + u32 tail; /* index of next ib_poll_cq() entry */ + union { + /* these are actually size ibcq.cqe + 1 */ + struct ib_uverbs_wc uqueue[0]; + struct ib_wc kqueue[0]; + }; +}; + +/* + * The completion queue structure. + */ +struct qib_cq { + struct ib_cq ibcq; + struct work_struct comptask; + spinlock_t lock; /* protect changes in this struct */ + u8 notify; + u8 triggered; + struct qib_cq_wc *queue; + struct qib_mmap_info *ip; +}; + +/* + * A segment is a linear region of low physical memory. + * XXX Maybe we should use phys addr here and kmap()/kunmap(). + * Used by the verbs layer. + */ +struct qib_seg { + void *vaddr; + size_t length; +}; + +/* The number of qib_segs that fit in a page. */ +#define QIB_SEGSZ (PAGE_SIZE / sizeof(struct qib_seg)) + +struct qib_segarray { + struct qib_seg segs[QIB_SEGSZ]; +}; + +struct qib_mregion { + struct ib_pd *pd; /* shares refcnt of ibmr.pd */ + u64 user_base; /* User's address for this region */ + u64 iova; /* IB start address of this region */ + size_t length; + u32 lkey; + u32 offset; /* offset (bytes) to start of region */ + int access_flags; + u32 max_segs; /* number of qib_segs in all the arrays */ + u32 mapsz; /* size of the map array */ + atomic_t refcount; + struct qib_segarray *map[0]; /* the segments */ +}; + +/* + * These keep track of the copy progress within a memory region. + * Used by the verbs layer. + */ +struct qib_sge { + struct qib_mregion *mr; + void *vaddr; /* kernel virtual address of segment */ + u32 sge_length; /* length of the SGE */ + u32 length; /* remaining length of the segment */ + u16 m; /* current index: mr->map[m] */ + u16 n; /* current index: mr->map[m]->segs[n] */ +}; + +/* Memory region */ +struct qib_mr { + struct ib_mr ibmr; + struct ib_umem *umem; + struct qib_mregion mr; /* must be last */ +}; + +/* + * Send work request queue entry. + * The size of the sg_list is determined when the QP is created and stored + * in qp->s_max_sge. + */ +struct qib_swqe { + struct ib_send_wr wr; /* don't use wr.sg_list */ + u32 psn; /* first packet sequence number */ + u32 lpsn; /* last packet sequence number */ + u32 ssn; /* send sequence number */ + u32 length; /* total length of data in sg_list */ + struct qib_sge sg_list[0]; +}; + +/* + * Receive work request queue entry. + * The size of the sg_list is determined when the QP (or SRQ) is created + * and stored in qp->r_rq.max_sge (or srq->rq.max_sge). + */ +struct qib_rwqe { + u64 wr_id; + u8 num_sge; + struct ib_sge sg_list[0]; +}; + +/* + * This structure is used to contain the head pointer, tail pointer, + * and receive work queue entries as a single memory allocation so + * it can be mmap'ed into user space. + * Note that the wq array elements are variable size so you can't + * just index into the array to get the N'th element; + * use get_rwqe_ptr() instead. + */ +struct qib_rwq { + u32 head; /* new work requests posted to the head */ + u32 tail; /* receives pull requests from here. */ + struct qib_rwqe wq[0]; +}; + +struct qib_rq { + struct qib_rwq *wq; + spinlock_t lock; /* protect changes in this struct */ + u32 size; /* size of RWQE array */ + u8 max_sge; +}; + +struct qib_srq { + struct ib_srq ibsrq; + struct qib_rq rq; + struct qib_mmap_info *ip; + /* send signal when number of RWQEs < limit */ + u32 limit; +}; + +struct qib_sge_state { + struct qib_sge *sg_list; /* next SGE to be used if any */ + struct qib_sge sge; /* progress state for the current SGE */ + u32 total_len; + u8 num_sge; +}; + +/* + * This structure holds the information that the send tasklet needs + * to send a RDMA read response or atomic operation. + */ +struct qib_ack_entry { + u8 opcode; + u8 sent; + u32 psn; + u32 lpsn; + union { + struct qib_sge rdma_sge; + u64 atomic_data; + }; +}; + +/* + * Variables prefixed with s_ are for the requester (sender). + * Variables prefixed with r_ are for the responder (receiver). + * Variables prefixed with ack_ are for responder replies. + * + * Common variables are protected by both r_rq.lock and s_lock in that order + * which only happens in modify_qp() or changing the QP 'state'. + */ +struct qib_qp { + struct ib_qp ibqp; + struct qib_qp *next; /* link list for QPN hash table */ + struct qib_qp *timer_next; /* link list for qib_ib_timer() */ + struct list_head iowait; /* link for wait PIO buf */ + struct list_head rspwait; /* link for waititing to respond */ + struct ib_ah_attr remote_ah_attr; + struct ib_ah_attr alt_ah_attr; + struct qib_ib_header s_hdr; /* next packet header to send */ + atomic_t refcount; + wait_queue_head_t wait; + wait_queue_head_t wait_dma; + struct timer_list s_timer; + struct work_struct s_work; + struct qib_mmap_info *ip; + struct qib_sge_state *s_cur_sge; + struct qib_verbs_txreq *s_tx; + struct qib_mregion *s_rdma_mr; + struct qib_sge_state s_sge; /* current send request data */ + struct qib_ack_entry s_ack_queue[QIB_MAX_RDMA_ATOMIC + 1]; + struct qib_sge_state s_ack_rdma_sge; + struct qib_sge_state s_rdma_read_sge; + struct qib_sge_state r_sge; /* current receive data */ + spinlock_t r_lock; /* used for APM */ + spinlock_t s_lock; + atomic_t s_dma_busy; + unsigned processor_id; /* Processor ID QP is bound to */ + u32 s_flags; + u32 s_cur_size; /* size of send packet in bytes */ + u32 s_len; /* total length of s_sge */ + u32 s_rdma_read_len; /* total length of s_rdma_read_sge */ + u32 s_next_psn; /* PSN for next request */ + u32 s_last_psn; /* last response PSN processed */ + u32 s_sending_psn; /* lowest PSN that is being sent */ + u32 s_sending_hpsn; /* highest PSN that is being sent */ + u32 s_psn; /* current packet sequence number */ + u32 s_ack_rdma_psn; /* PSN for sending RDMA read responses */ + u32 s_ack_psn; /* PSN for acking sends and RDMA writes */ + u32 s_rnr_timeout; /* number of milliseconds for RNR timeout */ + u32 r_ack_psn; /* PSN for next ACK or atomic ACK */ + u64 r_wr_id; /* ID for current receive WQE */ + unsigned long r_aflags; + u32 r_len; /* total length of r_sge */ + u32 r_rcv_len; /* receive data len processed */ + u32 r_psn; /* expected rcv packet sequence number */ + u32 r_msn; /* message sequence number */ + u16 s_hdrwords; /* size of s_hdr in 32 bit words */ + u16 s_rdma_ack_cnt; + u8 state; /* QP state */ + u8 s_state; /* opcode of last packet sent */ + u8 s_ack_state; /* opcode of packet to ACK */ + u8 s_nak_state; /* non-zero if NAK is pending */ + u8 r_state; /* opcode of last packet received */ + u8 r_nak_state; /* non-zero if NAK is pending */ + u8 r_min_rnr_timer; /* retry timeout value for RNR NAKs */ + u8 r_flags; + u8 r_max_rd_atomic; /* max number of RDMA read/atomic to receive */ + u8 r_head_ack_queue; /* index into s_ack_queue[] */ + u8 qp_access_flags; + u8 s_max_sge; /* size of s_wq->sg_list */ + u8 s_retry_cnt; /* number of times to retry */ + u8 s_rnr_retry_cnt; + u8 s_retry; /* requester retry counter */ + u8 s_rnr_retry; /* requester RNR retry counter */ + u8 s_pkey_index; /* PKEY index to use */ + u8 s_alt_pkey_index; /* Alternate path PKEY index to use */ + u8 s_max_rd_atomic; /* max number of RDMA read/atomic to send */ + u8 s_num_rd_atomic; /* number of RDMA read/atomic pending */ + u8 s_tail_ack_queue; /* index into s_ack_queue[] */ + u8 s_srate; + u8 s_draining; + u8 s_mig_state; + u8 timeout; /* Timeout for this QP */ + u8 alt_timeout; /* Alternate path timeout for this QP */ + u8 port_num; + enum ib_mtu path_mtu; + u32 remote_qpn; + u32 qkey; /* QKEY for this QP (for UD or RD) */ + u32 s_size; /* send work queue size */ + u32 s_head; /* new entries added here */ + u32 s_tail; /* next entry to process */ + u32 s_cur; /* current work queue entry */ + u32 s_acked; /* last un-ACK'ed entry */ + u32 s_last; /* last completed entry */ + u32 s_ssn; /* SSN of tail entry */ + u32 s_lsn; /* limit sequence number (credit) */ + struct qib_swqe *s_wq; /* send work queue */ + struct qib_swqe *s_wqe; + struct qib_rq r_rq; /* receive work queue */ + struct qib_sge r_sg_list[0]; /* verified SGEs */ +}; + +/* + * Atomic bit definitions for r_aflags. + */ +#define QIB_R_WRID_VALID 0 +#define QIB_R_REWIND_SGE 1 + +/* + * Bit definitions for r_flags. + */ +#define QIB_R_REUSE_SGE 0x01 +#define QIB_R_RDMAR_SEQ 0x02 +#define QIB_R_RSP_NAK 0x04 +#define QIB_R_RSP_SEND 0x08 +#define QIB_R_COMM_EST 0x10 + +/* + * Bit definitions for s_flags. + * + * QIB_S_SIGNAL_REQ_WR - set if QP send WRs contain completion signaled + * QIB_S_BUSY - send tasklet is processing the QP + * QIB_S_TIMER - the RC retry timer is active + * QIB_S_ACK_PENDING - an ACK is waiting to be sent after RDMA read/atomics + * QIB_S_WAIT_FENCE - waiting for all prior RDMA read or atomic SWQEs + * before processing the next SWQE + * QIB_S_WAIT_RDMAR - waiting for a RDMA read or atomic SWQE to complete + * before processing the next SWQE + * QIB_S_WAIT_RNR - waiting for RNR timeout + * QIB_S_WAIT_SSN_CREDIT - waiting for RC credits to process next SWQE + * QIB_S_WAIT_DMA - waiting for send DMA queue to drain before generating + * next send completion entry not via send DMA + * QIB_S_WAIT_PIO - waiting for a send buffer to be available + * QIB_S_WAIT_TX - waiting for a struct qib_verbs_txreq to be available + * QIB_S_WAIT_DMA_DESC - waiting for DMA descriptors to be available + * QIB_S_WAIT_KMEM - waiting for kernel memory to be available + * QIB_S_WAIT_PSN - waiting for a packet to exit the send DMA queue + * QIB_S_WAIT_ACK - waiting for an ACK packet before sending more requests + * QIB_S_SEND_ONE - send one packet, request ACK, then wait for ACK + */ +#define QIB_S_SIGNAL_REQ_WR 0x0001 +#define QIB_S_BUSY 0x0002 +#define QIB_S_TIMER 0x0004 +#define QIB_S_RESP_PENDING 0x0008 +#define QIB_S_ACK_PENDING 0x0010 +#define QIB_S_WAIT_FENCE 0x0020 +#define QIB_S_WAIT_RDMAR 0x0040 +#define QIB_S_WAIT_RNR 0x0080 +#define QIB_S_WAIT_SSN_CREDIT 0x0100 +#define QIB_S_WAIT_DMA 0x0200 +#define QIB_S_WAIT_PIO 0x0400 +#define QIB_S_WAIT_TX 0x0800 +#define QIB_S_WAIT_DMA_DESC 0x1000 +#define QIB_S_WAIT_KMEM 0x2000 +#define QIB_S_WAIT_PSN 0x4000 +#define QIB_S_WAIT_ACK 0x8000 +#define QIB_S_SEND_ONE 0x10000 +#define QIB_S_UNLIMITED_CREDIT 0x20000 + +/* + * Wait flags that would prevent any packet type from being sent. + */ +#define QIB_S_ANY_WAIT_IO (QIB_S_WAIT_PIO | QIB_S_WAIT_TX | \ + QIB_S_WAIT_DMA_DESC | QIB_S_WAIT_KMEM) + +/* + * Wait flags that would prevent send work requests from making progress. + */ +#define QIB_S_ANY_WAIT_SEND (QIB_S_WAIT_FENCE | QIB_S_WAIT_RDMAR | \ + QIB_S_WAIT_RNR | QIB_S_WAIT_SSN_CREDIT | QIB_S_WAIT_DMA | \ + QIB_S_WAIT_PSN | QIB_S_WAIT_ACK) + +#define QIB_S_ANY_WAIT (QIB_S_ANY_WAIT_IO | QIB_S_ANY_WAIT_SEND) + +#define QIB_PSN_CREDIT 16 + +/* + * Since struct qib_swqe is not a fixed size, we can't simply index into + * struct qib_qp.s_wq. This function does the array index computation. + */ +static inline struct qib_swqe *get_swqe_ptr(struct qib_qp *qp, + unsigned n) +{ + return (struct qib_swqe *)((char *)qp->s_wq + + (sizeof(struct qib_swqe) + + qp->s_max_sge * + sizeof(struct qib_sge)) * n); +} + +/* + * Since struct qib_rwqe is not a fixed size, we can't simply index into + * struct qib_rwq.wq. This function does the array index computation. + */ +static inline struct qib_rwqe *get_rwqe_ptr(struct qib_rq *rq, unsigned n) +{ + return (struct qib_rwqe *) + ((char *) rq->wq->wq + + (sizeof(struct qib_rwqe) + + rq->max_sge * sizeof(struct ib_sge)) * n); +} + +/* + * QPN-map pages start out as NULL, they get allocated upon + * first use and are never deallocated. This way, + * large bitmaps are not allocated unless large numbers of QPs are used. + */ +struct qpn_map { + void *page; +}; + +struct qib_qpn_table { + spinlock_t lock; /* protect changes in this struct */ + unsigned flags; /* flags for QP0/1 allocated for each port */ + u32 last; /* last QP number allocated */ + u32 nmaps; /* size of the map table */ + u16 limit; + u16 mask; + /* bit map of free QP numbers other than 0/1 */ + struct qpn_map map[QPNMAP_ENTRIES]; +}; + +struct qib_lkey_table { + spinlock_t lock; /* protect changes in this struct */ + u32 next; /* next unused index (speeds search) */ + u32 gen; /* generation count */ + u32 max; /* size of the table */ + struct qib_mregion **table; +}; + +struct qib_opcode_stats { + u64 n_packets; /* number of packets */ + u64 n_bytes; /* total number of bytes */ +}; + +struct qib_ibport { + struct qib_qp *qp0; + struct qib_qp *qp1; + struct ib_mad_agent *send_agent; /* agent for SMI (traps) */ + struct qib_ah *sm_ah; + struct qib_ah *smi_ah; + struct rb_root mcast_tree; + spinlock_t lock; /* protect changes in this struct */ + + /* non-zero when timer is set */ + unsigned long mkey_lease_timeout; + unsigned long trap_timeout; + __be64 gid_prefix; /* in network order */ + __be64 mkey; + __be64 guids[QIB_GUIDS_PER_PORT - 1]; /* writable GUIDs */ + u64 tid; /* TID for traps */ + u64 n_unicast_xmit; /* total unicast packets sent */ + u64 n_unicast_rcv; /* total unicast packets received */ + u64 n_multicast_xmit; /* total multicast packets sent */ + u64 n_multicast_rcv; /* total multicast packets received */ + u64 z_symbol_error_counter; /* starting count for PMA */ + u64 z_link_error_recovery_counter; /* starting count for PMA */ + u64 z_link_downed_counter; /* starting count for PMA */ + u64 z_port_rcv_errors; /* starting count for PMA */ + u64 z_port_rcv_remphys_errors; /* starting count for PMA */ + u64 z_port_xmit_discards; /* starting count for PMA */ + u64 z_port_xmit_data; /* starting count for PMA */ + u64 z_port_rcv_data; /* starting count for PMA */ + u64 z_port_xmit_packets; /* starting count for PMA */ + u64 z_port_rcv_packets; /* starting count for PMA */ + u32 z_local_link_integrity_errors; /* starting count for PMA */ + u32 z_excessive_buffer_overrun_errors; /* starting count for PMA */ + u32 z_vl15_dropped; /* starting count for PMA */ + u32 n_rc_resends; + u32 n_rc_acks; + u32 n_rc_qacks; + u32 n_rc_delayed_comp; + u32 n_seq_naks; + u32 n_rdma_seq; + u32 n_rnr_naks; + u32 n_other_naks; + u32 n_loop_pkts; + u32 n_pkt_drops; + u32 n_vl15_dropped; + u32 n_rc_timeouts; + u32 n_dmawait; + u32 n_unaligned; + u32 n_rc_dupreq; + u32 n_rc_seqnak; + u32 port_cap_flags; + u32 pma_sample_start; + u32 pma_sample_interval; + __be16 pma_counter_select[5]; + u16 pma_tag; + u16 pkey_violations; + u16 qkey_violations; + u16 mkey_violations; + u16 mkey_lease_period; + u16 sm_lid; + u16 repress_traps; + u8 sm_sl; + u8 mkeyprot; + u8 subnet_timeout; + u8 vl_high_limit; + u8 sl_to_vl[16]; + + struct qib_opcode_stats opstats[128]; +}; + +struct qib_ibdev { + struct ib_device ibdev; + struct list_head pending_mmaps; + spinlock_t mmap_offset_lock; /* protect mmap_offset */ + u32 mmap_offset; + struct qib_mregion *dma_mr; + + /* QP numbers are shared by all IB ports */ + struct qib_qpn_table qpn_table; + struct qib_lkey_table lk_table; + struct list_head piowait; /* list for wait PIO buf */ + struct list_head dmawait; /* list for wait DMA */ + struct list_head txwait; /* list for wait qib_verbs_txreq */ + struct list_head memwait; /* list for wait kernel memory */ + struct list_head txreq_free; + struct timer_list mem_timer; + struct qib_qp **qp_table; + struct qib_pio_header *pio_hdrs; + dma_addr_t pio_hdrs_phys; + /* list of QPs waiting for RNR timer */ + spinlock_t pending_lock; /* protect wait lists, PMA counters, etc. */ + unsigned qp_table_size; /* size of the hash table */ + spinlock_t qpt_lock; + + u32 n_piowait; + u32 n_txwait; + + u32 n_pds_allocated; /* number of PDs allocated for device */ + spinlock_t n_pds_lock; + u32 n_ahs_allocated; /* number of AHs allocated for device */ + spinlock_t n_ahs_lock; + u32 n_cqs_allocated; /* number of CQs allocated for device */ + spinlock_t n_cqs_lock; + u32 n_qps_allocated; /* number of QPs allocated for device */ + spinlock_t n_qps_lock; + u32 n_srqs_allocated; /* number of SRQs allocated for device */ + spinlock_t n_srqs_lock; + u32 n_mcast_grps_allocated; /* number of mcast groups allocated */ + spinlock_t n_mcast_grps_lock; +}; + +struct qib_verbs_counters { + u64 symbol_error_counter; + u64 link_error_recovery_counter; + u64 link_downed_counter; + u64 port_rcv_errors; + u64 port_rcv_remphys_errors; + u64 port_xmit_discards; + u64 port_xmit_data; + u64 port_rcv_data; + u64 port_xmit_packets; + u64 port_rcv_packets; + u32 local_link_integrity_errors; + u32 excessive_buffer_overrun_errors; + u32 vl15_dropped; +}; + +static inline struct qib_mr *to_imr(struct ib_mr *ibmr) +{ + return container_of(ibmr, struct qib_mr, ibmr); +} + +static inline struct qib_pd *to_ipd(struct ib_pd *ibpd) +{ + return container_of(ibpd, struct qib_pd, ibpd); +} + +static inline struct qib_ah *to_iah(struct ib_ah *ibah) +{ + return container_of(ibah, struct qib_ah, ibah); +} + +static inline struct qib_cq *to_icq(struct ib_cq *ibcq) +{ + return container_of(ibcq, struct qib_cq, ibcq); +} + +static inline struct qib_srq *to_isrq(struct ib_srq *ibsrq) +{ + return container_of(ibsrq, struct qib_srq, ibsrq); +} + +static inline struct qib_qp *to_iqp(struct ib_qp *ibqp) +{ + return container_of(ibqp, struct qib_qp, ibqp); +} + +static inline struct qib_ibdev *to_idev(struct ib_device *ibdev) +{ + return container_of(ibdev, struct qib_ibdev, ibdev); +} + +/* + * 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 qib_send_ok(struct qib_qp *qp) +{ + return !(qp->s_flags & (QIB_S_BUSY | QIB_S_ANY_WAIT_IO)) && + (qp->s_hdrwords || (qp->s_flags & QIB_S_RESP_PENDING) || + !(qp->s_flags & QIB_S_ANY_WAIT_SEND)); +} + +extern struct workqueue_struct *qib_wq; +extern struct workqueue_struct *qib_cq_wq; + +/* + * This must be called with s_lock held. + */ +static inline void qib_schedule_send(struct qib_qp *qp) +{ + if (qib_send_ok(qp)) { + if (qp->processor_id == smp_processor_id()) + queue_work(qib_wq, &qp->s_work); + else + queue_work_on(qp->processor_id, + qib_wq, &qp->s_work); + } +} + +static inline int qib_pkey_ok(u16 pkey1, u16 pkey2) +{ + u16 p1 = pkey1 & 0x7FFF; + u16 p2 = pkey2 & 0x7FFF; + + /* + * Low 15 bits must be non-zero and match, and + * one of the two must be a full member. + */ + return p1 && p1 == p2 && ((__s16)pkey1 < 0 || (__s16)pkey2 < 0); +} + +void qib_bad_pqkey(struct qib_ibport *ibp, __be16 trap_num, u32 key, u32 sl, + u32 qp1, u32 qp2, __be16 lid1, __be16 lid2); +void qib_cap_mask_chg(struct qib_ibport *ibp); +void qib_sys_guid_chg(struct qib_ibport *ibp); +void qib_node_desc_chg(struct qib_ibport *ibp); +int qib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, + struct ib_wc *in_wc, struct ib_grh *in_grh, + struct ib_mad *in_mad, struct ib_mad *out_mad); +int qib_create_agents(struct qib_ibdev *dev); +void qib_free_agents(struct qib_ibdev *dev); + +/* + * Compare the lower 24 bits of the two values. + * Returns an integer <, ==, or > than zero. + */ +static inline int qib_cmp24(u32 a, u32 b) +{ + return (((int) a) - ((int) b)) << 8; +} + +struct qib_mcast *qib_mcast_find(struct qib_ibport *ibp, union ib_gid *mgid); + +int qib_snapshot_counters(struct qib_pportdata *ppd, u64 *swords, + u64 *rwords, u64 *spkts, u64 *rpkts, + u64 *xmit_wait); + +int qib_get_counters(struct qib_pportdata *ppd, + struct qib_verbs_counters *cntrs); + +int qib_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid); + +int qib_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid); + +int qib_mcast_tree_empty(struct qib_ibport *ibp); + +__be32 qib_compute_aeth(struct qib_qp *qp); + +struct qib_qp *qib_lookup_qpn(struct qib_ibport *ibp, u32 qpn); + +struct ib_qp *qib_create_qp(struct ib_pd *ibpd, + struct ib_qp_init_attr *init_attr, + struct ib_udata *udata); + +int qib_destroy_qp(struct ib_qp *ibqp); + +int qib_error_qp(struct qib_qp *qp, enum ib_wc_status err); + +int qib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, + int attr_mask, struct ib_udata *udata); + +int qib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, + int attr_mask, struct ib_qp_init_attr *init_attr); + +unsigned qib_free_all_qps(struct qib_devdata *dd); + +void qib_init_qpn_table(struct qib_devdata *dd, struct qib_qpn_table *qpt); + +void qib_free_qpn_table(struct qib_qpn_table *qpt); + +void qib_get_credit(struct qib_qp *qp, u32 aeth); + +unsigned qib_pkt_delay(u32 plen, u8 snd_mult, u8 rcv_mult); + +void qib_verbs_sdma_desc_avail(struct qib_pportdata *ppd, unsigned avail); + +void qib_put_txreq(struct qib_verbs_txreq *tx); + +int qib_verbs_send(struct qib_qp *qp, struct qib_ib_header *hdr, + u32 hdrwords, struct qib_sge_state *ss, u32 len); + +void qib_copy_sge(struct qib_sge_state *ss, void *data, u32 length, + int release); + +void qib_skip_sge(struct qib_sge_state *ss, u32 length, int release); + +void qib_uc_rcv(struct qib_ibport *ibp, struct qib_ib_header *hdr, + int has_grh, void *data, u32 tlen, struct qib_qp *qp); + +void qib_rc_rcv(struct qib_ctxtdata *rcd, struct qib_ib_header *hdr, + int has_grh, void *data, u32 tlen, struct qib_qp *qp); + +int qib_check_ah(struct ib_device *ibdev, struct ib_ah_attr *ah_attr); + +void qib_rc_rnr_retry(unsigned long arg); + +void qib_rc_send_complete(struct qib_qp *qp, struct qib_ib_header *hdr); + +void qib_rc_error(struct qib_qp *qp, enum ib_wc_status err); + +int qib_post_ud_send(struct qib_qp *qp, struct ib_send_wr *wr); + +void qib_ud_rcv(struct qib_ibport *ibp, struct qib_ib_header *hdr, + int has_grh, void *data, u32 tlen, struct qib_qp *qp); + +int qib_alloc_lkey(struct qib_lkey_table *rkt, struct qib_mregion *mr); + +int qib_free_lkey(struct qib_ibdev *dev, struct qib_mregion *mr); + +int qib_lkey_ok(struct qib_lkey_table *rkt, struct qib_pd *pd, + struct qib_sge *isge, struct ib_sge *sge, int acc); + +int qib_rkey_ok(struct qib_qp *qp, struct qib_sge *sge, + u32 len, u64 vaddr, u32 rkey, int acc); + +int qib_post_srq_receive(struct ib_srq *ibsrq, struct ib_recv_wr *wr, + struct ib_recv_wr **bad_wr); + +struct ib_srq *qib_create_srq(struct ib_pd *ibpd, + struct ib_srq_init_attr *srq_init_attr, + struct ib_udata *udata); + +int qib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr, + enum ib_srq_attr_mask attr_mask, + struct ib_udata *udata); + +int qib_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr); + +int qib_destroy_srq(struct ib_srq *ibsrq); + +void qib_cq_enter(struct qib_cq *cq, struct ib_wc *entry, int sig); + +int qib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry); + +struct ib_cq *qib_create_cq(struct ib_device *ibdev, int entries, + int comp_vector, struct ib_ucontext *context, + struct ib_udata *udata); + +int qib_destroy_cq(struct ib_cq *ibcq); + +int qib_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags notify_flags); + +int qib_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata); + +struct ib_mr *qib_get_dma_mr(struct ib_pd *pd, int acc); + +struct ib_mr *qib_reg_phys_mr(struct ib_pd *pd, + struct ib_phys_buf *buffer_list, + int num_phys_buf, int acc, u64 *iova_start); + +struct ib_mr *qib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length, + u64 virt_addr, int mr_access_flags, + struct ib_udata *udata); + +int qib_dereg_mr(struct ib_mr *ibmr); + +struct ib_mr *qib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len); + +struct ib_fast_reg_page_list *qib_alloc_fast_reg_page_list( + struct ib_device *ibdev, int page_list_len); + +void qib_free_fast_reg_page_list(struct ib_fast_reg_page_list *pl); + +int qib_fast_reg_mr(struct qib_qp *qp, struct ib_send_wr *wr); + +struct ib_fmr *qib_alloc_fmr(struct ib_pd *pd, int mr_access_flags, + struct ib_fmr_attr *fmr_attr); + +int qib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, + int list_len, u64 iova); + +int qib_unmap_fmr(struct list_head *fmr_list); + +int qib_dealloc_fmr(struct ib_fmr *ibfmr); + +void qib_release_mmap_info(struct kref *ref); + +struct qib_mmap_info *qib_create_mmap_info(struct qib_ibdev *dev, u32 size, + struct ib_ucontext *context, + void *obj); + +void qib_update_mmap_info(struct qib_ibdev *dev, struct qib_mmap_info *ip, + u32 size, void *obj); + +int qib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma); + +int qib_get_rwqe(struct qib_qp *qp, int wr_id_only); + +void qib_migrate_qp(struct qib_qp *qp); + +int qib_ruc_check_hdr(struct qib_ibport *ibp, struct qib_ib_header *hdr, + int has_grh, struct qib_qp *qp, u32 bth0); + +u32 qib_make_grh(struct qib_ibport *ibp, struct ib_grh *hdr, + struct ib_global_route *grh, u32 hwords, u32 nwords); + +void qib_make_ruc_header(struct qib_qp *qp, struct qib_other_headers *ohdr, + u32 bth0, u32 bth2); + +void qib_do_send(struct work_struct *work); + +void qib_send_complete(struct qib_qp *qp, struct qib_swqe *wqe, + enum ib_wc_status status); + +void qib_send_rc_ack(struct qib_qp *qp); + +int qib_make_rc_req(struct qib_qp *qp); + +int qib_make_uc_req(struct qib_qp *qp); + +int qib_make_ud_req(struct qib_qp *qp); + +int qib_register_ib_device(struct qib_devdata *); + +void qib_unregister_ib_device(struct qib_devdata *); + +void qib_ib_rcv(struct qib_ctxtdata *, void *, void *, u32); + +void qib_ib_piobufavail(struct qib_devdata *); + +unsigned qib_get_npkeys(struct qib_devdata *); + +unsigned qib_get_pkey(struct qib_ibport *, unsigned); + +extern const enum ib_wc_opcode ib_qib_wc_opcode[]; + +/* + * Below HCA-independent IB PhysPortState values, returned + * by the f_ibphys_portstate() routine. + */ +#define IB_PHYSPORTSTATE_SLEEP 1 +#define IB_PHYSPORTSTATE_POLL 2 +#define IB_PHYSPORTSTATE_DISABLED 3 +#define IB_PHYSPORTSTATE_CFG_TRAIN 4 +#define IB_PHYSPORTSTATE_LINKUP 5 +#define IB_PHYSPORTSTATE_LINK_ERR_RECOVER 6 +#define IB_PHYSPORTSTATE_CFG_DEBOUNCE 8 +#define IB_PHYSPORTSTATE_CFG_IDLE 0xB +#define IB_PHYSPORTSTATE_RECOVERY_RETRAIN 0xC +#define IB_PHYSPORTSTATE_RECOVERY_WAITRMT 0xE +#define IB_PHYSPORTSTATE_RECOVERY_IDLE 0xF +#define IB_PHYSPORTSTATE_CFG_ENH 0x10 +#define IB_PHYSPORTSTATE_CFG_WAIT_ENH 0x13 + +extern const int ib_qib_state_ops[]; + +extern __be64 ib_qib_sys_image_guid; /* in network order */ + +extern unsigned int ib_qib_lkey_table_size; + +extern unsigned int ib_qib_max_cqes; + +extern unsigned int ib_qib_max_cqs; + +extern unsigned int ib_qib_max_qp_wrs; + +extern unsigned int ib_qib_max_qps; + +extern unsigned int ib_qib_max_sges; + +extern unsigned int ib_qib_max_mcast_grps; + +extern unsigned int ib_qib_max_mcast_qp_attached; + +extern unsigned int ib_qib_max_srqs; + +extern unsigned int ib_qib_max_srq_sges; + +extern unsigned int ib_qib_max_srq_wrs; + +extern const u32 ib_qib_rnr_table[]; + +extern struct ib_dma_mapping_ops qib_dma_mapping_ops; + +#endif /* QIB_VERBS_H */ |