diff options
Diffstat (limited to 'drivers/infiniband/hw/cxgb4/iw_cxgb4.h')
| -rw-r--r-- | drivers/infiniband/hw/cxgb4/iw_cxgb4.h | 1133 |
1 files changed, 1133 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h new file mode 100644 index 000000000..f0fceadd0 --- /dev/null +++ b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h @@ -0,0 +1,1133 @@ +/* + * Copyright (c) 2009-2010 Chelsio, 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 __IW_CXGB4_H__ +#define __IW_CXGB4_H__ + +#include <linux/mutex.h> +#include <linux/list.h> +#include <linux/spinlock.h> +#include <linux/idr.h> +#include <linux/completion.h> +#include <linux/netdevice.h> +#include <linux/sched/mm.h> +#include <linux/pci.h> +#include <linux/dma-mapping.h> +#include <linux/inet.h> +#include <linux/wait.h> +#include <linux/kref.h> +#include <linux/timer.h> +#include <linux/io.h> +#include <linux/workqueue.h> + +#include <asm/byteorder.h> + +#include <net/net_namespace.h> + +#include <rdma/ib_verbs.h> +#include <rdma/iw_cm.h> +#include <rdma/rdma_netlink.h> +#include <rdma/iw_portmap.h> +#include <rdma/restrack.h> + +#include "cxgb4.h" +#include "cxgb4_uld.h" +#include "l2t.h" +#include <rdma/cxgb4-abi.h> + +#define DRV_NAME "iw_cxgb4" +#define MOD DRV_NAME ":" + +#ifdef pr_fmt +#undef pr_fmt +#endif + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include "t4.h" + +#define PBL_OFF(rdev_p, a) ((a) - (rdev_p)->lldi.vr->pbl.start) +#define RQT_OFF(rdev_p, a) ((a) - (rdev_p)->lldi.vr->rq.start) + +static inline void *cplhdr(struct sk_buff *skb) +{ + return skb->data; +} + +#define C4IW_ID_TABLE_F_RANDOM 1 /* Pseudo-randomize the id's returned */ +#define C4IW_ID_TABLE_F_EMPTY 2 /* Table is initially empty */ + +struct c4iw_id_table { + u32 flags; + u32 start; /* logical minimal id */ + u32 last; /* hint for find */ + u32 max; + spinlock_t lock; + unsigned long *table; +}; + +struct c4iw_resource { + struct c4iw_id_table tpt_table; + struct c4iw_id_table qid_table; + struct c4iw_id_table pdid_table; + struct c4iw_id_table srq_table; +}; + +struct c4iw_qid_list { + struct list_head entry; + u32 qid; +}; + +struct c4iw_dev_ucontext { + struct list_head qpids; + struct list_head cqids; + struct mutex lock; + struct kref kref; +}; + +enum c4iw_rdev_flags { + T4_FATAL_ERROR = (1<<0), + T4_STATUS_PAGE_DISABLED = (1<<1), +}; + +struct c4iw_stat { + u64 total; + u64 cur; + u64 max; + u64 fail; +}; + +struct c4iw_stats { + struct mutex lock; + struct c4iw_stat qid; + struct c4iw_stat pd; + struct c4iw_stat stag; + struct c4iw_stat pbl; + struct c4iw_stat rqt; + struct c4iw_stat srqt; + struct c4iw_stat srq; + struct c4iw_stat ocqp; + u64 db_full; + u64 db_empty; + u64 db_drop; + u64 db_state_transitions; + u64 db_fc_interruptions; + u64 tcam_full; + u64 act_ofld_conn_fails; + u64 pas_ofld_conn_fails; + u64 neg_adv; +}; + +struct c4iw_hw_queue { + int t4_eq_status_entries; + int t4_max_eq_size; + int t4_max_iq_size; + int t4_max_rq_size; + int t4_max_sq_size; + int t4_max_qp_depth; + int t4_max_cq_depth; + int t4_stat_len; +}; + +struct wr_log_entry { + ktime_t post_host_time; + ktime_t poll_host_time; + u64 post_sge_ts; + u64 cqe_sge_ts; + u64 poll_sge_ts; + u16 qid; + u16 wr_id; + u8 opcode; + u8 valid; +}; + +struct c4iw_rdev { + struct c4iw_resource resource; + u32 qpmask; + u32 cqmask; + struct c4iw_dev_ucontext uctx; + struct gen_pool *pbl_pool; + struct gen_pool *rqt_pool; + struct gen_pool *ocqp_pool; + u32 flags; + struct cxgb4_lld_info lldi; + unsigned long bar2_pa; + void __iomem *bar2_kva; + unsigned long oc_mw_pa; + void __iomem *oc_mw_kva; + struct c4iw_stats stats; + struct c4iw_hw_queue hw_queue; + struct t4_dev_status_page *status_page; + atomic_t wr_log_idx; + struct wr_log_entry *wr_log; + int wr_log_size; + struct workqueue_struct *free_workq; + struct completion rqt_compl; + struct completion pbl_compl; + struct kref rqt_kref; + struct kref pbl_kref; +}; + +static inline int c4iw_fatal_error(struct c4iw_rdev *rdev) +{ + return rdev->flags & T4_FATAL_ERROR; +} + +static inline int c4iw_num_stags(struct c4iw_rdev *rdev) +{ + return (int)(rdev->lldi.vr->stag.size >> 5); +} + +#define C4IW_WR_TO (60*HZ) + +struct c4iw_wr_wait { + struct completion completion; + int ret; + struct kref kref; +}; + +void _c4iw_free_wr_wait(struct kref *kref); + +static inline void c4iw_put_wr_wait(struct c4iw_wr_wait *wr_waitp) +{ + pr_debug("wr_wait %p ref before put %u\n", wr_waitp, + kref_read(&wr_waitp->kref)); + WARN_ON(kref_read(&wr_waitp->kref) == 0); + kref_put(&wr_waitp->kref, _c4iw_free_wr_wait); +} + +static inline void c4iw_get_wr_wait(struct c4iw_wr_wait *wr_waitp) +{ + pr_debug("wr_wait %p ref before get %u\n", wr_waitp, + kref_read(&wr_waitp->kref)); + WARN_ON(kref_read(&wr_waitp->kref) == 0); + kref_get(&wr_waitp->kref); +} + +static inline void c4iw_init_wr_wait(struct c4iw_wr_wait *wr_waitp) +{ + wr_waitp->ret = 0; + init_completion(&wr_waitp->completion); +} + +static inline void _c4iw_wake_up(struct c4iw_wr_wait *wr_waitp, int ret, + bool deref) +{ + wr_waitp->ret = ret; + complete(&wr_waitp->completion); + if (deref) + c4iw_put_wr_wait(wr_waitp); +} + +static inline void c4iw_wake_up_noref(struct c4iw_wr_wait *wr_waitp, int ret) +{ + _c4iw_wake_up(wr_waitp, ret, false); +} + +static inline void c4iw_wake_up_deref(struct c4iw_wr_wait *wr_waitp, int ret) +{ + _c4iw_wake_up(wr_waitp, ret, true); +} + +static inline int c4iw_wait_for_reply(struct c4iw_rdev *rdev, + struct c4iw_wr_wait *wr_waitp, + u32 hwtid, u32 qpid, + const char *func) +{ + int ret; + + if (c4iw_fatal_error(rdev)) { + wr_waitp->ret = -EIO; + goto out; + } + + ret = wait_for_completion_timeout(&wr_waitp->completion, C4IW_WR_TO); + if (!ret) { + pr_err("%s - Device %s not responding (disabling device) - tid %u qpid %u\n", + func, pci_name(rdev->lldi.pdev), hwtid, qpid); + rdev->flags |= T4_FATAL_ERROR; + wr_waitp->ret = -EIO; + goto out; + } + if (wr_waitp->ret) + pr_debug("%s: FW reply %d tid %u qpid %u\n", + pci_name(rdev->lldi.pdev), wr_waitp->ret, hwtid, qpid); +out: + return wr_waitp->ret; +} + +int c4iw_ofld_send(struct c4iw_rdev *rdev, struct sk_buff *skb); + +static inline int c4iw_ref_send_wait(struct c4iw_rdev *rdev, + struct sk_buff *skb, + struct c4iw_wr_wait *wr_waitp, + u32 hwtid, u32 qpid, + const char *func) +{ + int ret; + + pr_debug("%s wr_wait %p hwtid %u qpid %u\n", func, wr_waitp, hwtid, + qpid); + c4iw_get_wr_wait(wr_waitp); + ret = c4iw_ofld_send(rdev, skb); + if (ret) { + c4iw_put_wr_wait(wr_waitp); + return ret; + } + return c4iw_wait_for_reply(rdev, wr_waitp, hwtid, qpid, func); +} + +enum db_state { + NORMAL = 0, + FLOW_CONTROL = 1, + RECOVERY = 2, + STOPPED = 3 +}; + +struct c4iw_dev { + struct ib_device ibdev; + struct c4iw_rdev rdev; + u32 device_cap_flags; + struct idr cqidr; + struct idr qpidr; + struct idr mmidr; + spinlock_t lock; + struct mutex db_mutex; + struct dentry *debugfs_root; + enum db_state db_state; + struct idr hwtid_idr; + struct idr atid_idr; + struct idr stid_idr; + struct list_head db_fc_list; + u32 avail_ird; + wait_queue_head_t wait; +}; + +struct uld_ctx { + struct list_head entry; + struct cxgb4_lld_info lldi; + struct c4iw_dev *dev; + struct work_struct reg_work; +}; + +static inline struct c4iw_dev *to_c4iw_dev(struct ib_device *ibdev) +{ + return container_of(ibdev, struct c4iw_dev, ibdev); +} + +static inline struct c4iw_dev *rdev_to_c4iw_dev(struct c4iw_rdev *rdev) +{ + return container_of(rdev, struct c4iw_dev, rdev); +} + +static inline struct c4iw_cq *get_chp(struct c4iw_dev *rhp, u32 cqid) +{ + return idr_find(&rhp->cqidr, cqid); +} + +static inline struct c4iw_qp *get_qhp(struct c4iw_dev *rhp, u32 qpid) +{ + return idr_find(&rhp->qpidr, qpid); +} + +static inline struct c4iw_mr *get_mhp(struct c4iw_dev *rhp, u32 mmid) +{ + return idr_find(&rhp->mmidr, mmid); +} + +static inline int _insert_handle(struct c4iw_dev *rhp, struct idr *idr, + void *handle, u32 id, int lock) +{ + int ret; + + if (lock) { + idr_preload(GFP_KERNEL); + spin_lock_irq(&rhp->lock); + } + + ret = idr_alloc(idr, handle, id, id + 1, GFP_ATOMIC); + + if (lock) { + spin_unlock_irq(&rhp->lock); + idr_preload_end(); + } + + return ret < 0 ? ret : 0; +} + +static inline int insert_handle(struct c4iw_dev *rhp, struct idr *idr, + void *handle, u32 id) +{ + return _insert_handle(rhp, idr, handle, id, 1); +} + +static inline int insert_handle_nolock(struct c4iw_dev *rhp, struct idr *idr, + void *handle, u32 id) +{ + return _insert_handle(rhp, idr, handle, id, 0); +} + +static inline void _remove_handle(struct c4iw_dev *rhp, struct idr *idr, + u32 id, int lock) +{ + if (lock) + spin_lock_irq(&rhp->lock); + idr_remove(idr, id); + if (lock) + spin_unlock_irq(&rhp->lock); +} + +static inline void remove_handle(struct c4iw_dev *rhp, struct idr *idr, u32 id) +{ + _remove_handle(rhp, idr, id, 1); +} + +static inline void remove_handle_nolock(struct c4iw_dev *rhp, + struct idr *idr, u32 id) +{ + _remove_handle(rhp, idr, id, 0); +} + +extern uint c4iw_max_read_depth; + +static inline int cur_max_read_depth(struct c4iw_dev *dev) +{ + return min(dev->rdev.lldi.max_ordird_qp, c4iw_max_read_depth); +} + +struct c4iw_pd { + struct ib_pd ibpd; + u32 pdid; + struct c4iw_dev *rhp; +}; + +static inline struct c4iw_pd *to_c4iw_pd(struct ib_pd *ibpd) +{ + return container_of(ibpd, struct c4iw_pd, ibpd); +} + +struct tpt_attributes { + u64 len; + u64 va_fbo; + enum fw_ri_mem_perms perms; + u32 stag; + u32 pdid; + u32 qpid; + u32 pbl_addr; + u32 pbl_size; + u32 state:1; + u32 type:2; + u32 rsvd:1; + u32 remote_invaliate_disable:1; + u32 zbva:1; + u32 mw_bind_enable:1; + u32 page_size:5; +}; + +struct c4iw_mr { + struct ib_mr ibmr; + struct ib_umem *umem; + struct c4iw_dev *rhp; + struct sk_buff *dereg_skb; + u64 kva; + struct tpt_attributes attr; + u64 *mpl; + dma_addr_t mpl_addr; + u32 max_mpl_len; + u32 mpl_len; + struct c4iw_wr_wait *wr_waitp; +}; + +static inline struct c4iw_mr *to_c4iw_mr(struct ib_mr *ibmr) +{ + return container_of(ibmr, struct c4iw_mr, ibmr); +} + +struct c4iw_mw { + struct ib_mw ibmw; + struct c4iw_dev *rhp; + struct sk_buff *dereg_skb; + u64 kva; + struct tpt_attributes attr; + struct c4iw_wr_wait *wr_waitp; +}; + +static inline struct c4iw_mw *to_c4iw_mw(struct ib_mw *ibmw) +{ + return container_of(ibmw, struct c4iw_mw, ibmw); +} + +struct c4iw_cq { + struct ib_cq ibcq; + struct c4iw_dev *rhp; + struct sk_buff *destroy_skb; + struct t4_cq cq; + spinlock_t lock; + spinlock_t comp_handler_lock; + atomic_t refcnt; + wait_queue_head_t wait; + struct c4iw_wr_wait *wr_waitp; +}; + +static inline struct c4iw_cq *to_c4iw_cq(struct ib_cq *ibcq) +{ + return container_of(ibcq, struct c4iw_cq, ibcq); +} + +struct c4iw_mpa_attributes { + u8 initiator; + u8 recv_marker_enabled; + u8 xmit_marker_enabled; + u8 crc_enabled; + u8 enhanced_rdma_conn; + u8 version; + u8 p2p_type; +}; + +struct c4iw_qp_attributes { + u32 scq; + u32 rcq; + u32 sq_num_entries; + u32 rq_num_entries; + u32 sq_max_sges; + u32 sq_max_sges_rdma_write; + u32 rq_max_sges; + u32 state; + u8 enable_rdma_read; + u8 enable_rdma_write; + u8 enable_bind; + u8 enable_mmid0_fastreg; + u32 max_ord; + u32 max_ird; + u32 pd; + u32 next_state; + char terminate_buffer[52]; + u32 terminate_msg_len; + u8 is_terminate_local; + struct c4iw_mpa_attributes mpa_attr; + struct c4iw_ep *llp_stream_handle; + u8 layer_etype; + u8 ecode; + u16 sq_db_inc; + u16 rq_db_inc; + u8 send_term; +}; + +struct c4iw_qp { + struct ib_qp ibqp; + struct list_head db_fc_entry; + struct c4iw_dev *rhp; + struct c4iw_ep *ep; + struct c4iw_qp_attributes attr; + struct t4_wq wq; + spinlock_t lock; + struct mutex mutex; + struct kref kref; + wait_queue_head_t wait; + int sq_sig_all; + struct c4iw_srq *srq; + struct work_struct free_work; + struct c4iw_ucontext *ucontext; + struct c4iw_wr_wait *wr_waitp; +}; + +static inline struct c4iw_qp *to_c4iw_qp(struct ib_qp *ibqp) +{ + return container_of(ibqp, struct c4iw_qp, ibqp); +} + +struct c4iw_srq { + struct ib_srq ibsrq; + struct list_head db_fc_entry; + struct c4iw_dev *rhp; + struct t4_srq wq; + struct sk_buff *destroy_skb; + u32 srq_limit; + u32 pdid; + int idx; + u32 flags; + spinlock_t lock; /* protects srq */ + struct c4iw_wr_wait *wr_waitp; + bool armed; +}; + +static inline struct c4iw_srq *to_c4iw_srq(struct ib_srq *ibsrq) +{ + return container_of(ibsrq, struct c4iw_srq, ibsrq); +} + +struct c4iw_ucontext { + struct ib_ucontext ibucontext; + struct c4iw_dev_ucontext uctx; + u32 key; + spinlock_t mmap_lock; + struct list_head mmaps; + struct kref kref; + bool is_32b_cqe; +}; + +static inline struct c4iw_ucontext *to_c4iw_ucontext(struct ib_ucontext *c) +{ + return container_of(c, struct c4iw_ucontext, ibucontext); +} + +void _c4iw_free_ucontext(struct kref *kref); + +static inline void c4iw_put_ucontext(struct c4iw_ucontext *ucontext) +{ + kref_put(&ucontext->kref, _c4iw_free_ucontext); +} + +static inline void c4iw_get_ucontext(struct c4iw_ucontext *ucontext) +{ + kref_get(&ucontext->kref); +} + +struct c4iw_mm_entry { + struct list_head entry; + u64 addr; + u32 key; + unsigned len; +}; + +static inline struct c4iw_mm_entry *remove_mmap(struct c4iw_ucontext *ucontext, + u32 key, unsigned len) +{ + struct list_head *pos, *nxt; + struct c4iw_mm_entry *mm; + + spin_lock(&ucontext->mmap_lock); + list_for_each_safe(pos, nxt, &ucontext->mmaps) { + + mm = list_entry(pos, struct c4iw_mm_entry, entry); + if (mm->key == key && mm->len == len) { + list_del_init(&mm->entry); + spin_unlock(&ucontext->mmap_lock); + pr_debug("key 0x%x addr 0x%llx len %d\n", key, + (unsigned long long)mm->addr, mm->len); + return mm; + } + } + spin_unlock(&ucontext->mmap_lock); + return NULL; +} + +static inline void insert_mmap(struct c4iw_ucontext *ucontext, + struct c4iw_mm_entry *mm) +{ + spin_lock(&ucontext->mmap_lock); + pr_debug("key 0x%x addr 0x%llx len %d\n", + mm->key, (unsigned long long)mm->addr, mm->len); + list_add_tail(&mm->entry, &ucontext->mmaps); + spin_unlock(&ucontext->mmap_lock); +} + +enum c4iw_qp_attr_mask { + C4IW_QP_ATTR_NEXT_STATE = 1 << 0, + C4IW_QP_ATTR_SQ_DB = 1<<1, + C4IW_QP_ATTR_RQ_DB = 1<<2, + C4IW_QP_ATTR_ENABLE_RDMA_READ = 1 << 7, + C4IW_QP_ATTR_ENABLE_RDMA_WRITE = 1 << 8, + C4IW_QP_ATTR_ENABLE_RDMA_BIND = 1 << 9, + C4IW_QP_ATTR_MAX_ORD = 1 << 11, + C4IW_QP_ATTR_MAX_IRD = 1 << 12, + C4IW_QP_ATTR_LLP_STREAM_HANDLE = 1 << 22, + C4IW_QP_ATTR_STREAM_MSG_BUFFER = 1 << 23, + C4IW_QP_ATTR_MPA_ATTR = 1 << 24, + C4IW_QP_ATTR_QP_CONTEXT_ACTIVATE = 1 << 25, + C4IW_QP_ATTR_VALID_MODIFY = (C4IW_QP_ATTR_ENABLE_RDMA_READ | + C4IW_QP_ATTR_ENABLE_RDMA_WRITE | + C4IW_QP_ATTR_MAX_ORD | + C4IW_QP_ATTR_MAX_IRD | + C4IW_QP_ATTR_LLP_STREAM_HANDLE | + C4IW_QP_ATTR_STREAM_MSG_BUFFER | + C4IW_QP_ATTR_MPA_ATTR | + C4IW_QP_ATTR_QP_CONTEXT_ACTIVATE) +}; + +int c4iw_modify_qp(struct c4iw_dev *rhp, + struct c4iw_qp *qhp, + enum c4iw_qp_attr_mask mask, + struct c4iw_qp_attributes *attrs, + int internal); + +enum c4iw_qp_state { + C4IW_QP_STATE_IDLE, + C4IW_QP_STATE_RTS, + C4IW_QP_STATE_ERROR, + C4IW_QP_STATE_TERMINATE, + C4IW_QP_STATE_CLOSING, + C4IW_QP_STATE_TOT +}; + +static inline int c4iw_convert_state(enum ib_qp_state ib_state) +{ + switch (ib_state) { + case IB_QPS_RESET: + case IB_QPS_INIT: + return C4IW_QP_STATE_IDLE; + case IB_QPS_RTS: + return C4IW_QP_STATE_RTS; + case IB_QPS_SQD: + return C4IW_QP_STATE_CLOSING; + case IB_QPS_SQE: + return C4IW_QP_STATE_TERMINATE; + case IB_QPS_ERR: + return C4IW_QP_STATE_ERROR; + default: + return -1; + } +} + +static inline int to_ib_qp_state(int c4iw_qp_state) +{ + switch (c4iw_qp_state) { + case C4IW_QP_STATE_IDLE: + return IB_QPS_INIT; + case C4IW_QP_STATE_RTS: + return IB_QPS_RTS; + case C4IW_QP_STATE_CLOSING: + return IB_QPS_SQD; + case C4IW_QP_STATE_TERMINATE: + return IB_QPS_SQE; + case C4IW_QP_STATE_ERROR: + return IB_QPS_ERR; + } + return IB_QPS_ERR; +} + +static inline u32 c4iw_ib_to_tpt_access(int a) +{ + return (a & IB_ACCESS_REMOTE_WRITE ? FW_RI_MEM_ACCESS_REM_WRITE : 0) | + (a & IB_ACCESS_REMOTE_READ ? FW_RI_MEM_ACCESS_REM_READ : 0) | + (a & IB_ACCESS_LOCAL_WRITE ? FW_RI_MEM_ACCESS_LOCAL_WRITE : 0) | + FW_RI_MEM_ACCESS_LOCAL_READ; +} + +static inline u32 c4iw_ib_to_tpt_bind_access(int acc) +{ + return (acc & IB_ACCESS_REMOTE_WRITE ? FW_RI_MEM_ACCESS_REM_WRITE : 0) | + (acc & IB_ACCESS_REMOTE_READ ? FW_RI_MEM_ACCESS_REM_READ : 0); +} + +enum c4iw_mmid_state { + C4IW_STAG_STATE_VALID, + C4IW_STAG_STATE_INVALID +}; + +#define C4IW_NODE_DESC "cxgb4 Chelsio Communications" + +#define MPA_KEY_REQ "MPA ID Req Frame" +#define MPA_KEY_REP "MPA ID Rep Frame" + +#define MPA_MAX_PRIVATE_DATA 256 +#define MPA_ENHANCED_RDMA_CONN 0x10 +#define MPA_REJECT 0x20 +#define MPA_CRC 0x40 +#define MPA_MARKERS 0x80 +#define MPA_FLAGS_MASK 0xE0 + +#define MPA_V2_PEER2PEER_MODEL 0x8000 +#define MPA_V2_ZERO_LEN_FPDU_RTR 0x4000 +#define MPA_V2_RDMA_WRITE_RTR 0x8000 +#define MPA_V2_RDMA_READ_RTR 0x4000 +#define MPA_V2_IRD_ORD_MASK 0x3FFF + +#define c4iw_put_ep(ep) { \ + pr_debug("put_ep ep %p refcnt %d\n", \ + ep, kref_read(&((ep)->kref))); \ + WARN_ON(kref_read(&((ep)->kref)) < 1); \ + kref_put(&((ep)->kref), _c4iw_free_ep); \ +} + +#define c4iw_get_ep(ep) { \ + pr_debug("get_ep ep %p, refcnt %d\n", \ + ep, kref_read(&((ep)->kref))); \ + kref_get(&((ep)->kref)); \ +} +void _c4iw_free_ep(struct kref *kref); + +struct mpa_message { + u8 key[16]; + u8 flags; + u8 revision; + __be16 private_data_size; + u8 private_data[0]; +}; + +struct mpa_v2_conn_params { + __be16 ird; + __be16 ord; +}; + +struct terminate_message { + u8 layer_etype; + u8 ecode; + __be16 hdrct_rsvd; + u8 len_hdrs[0]; +}; + +#define TERM_MAX_LENGTH (sizeof(struct terminate_message) + 2 + 18 + 28) + +enum c4iw_layers_types { + LAYER_RDMAP = 0x00, + LAYER_DDP = 0x10, + LAYER_MPA = 0x20, + RDMAP_LOCAL_CATA = 0x00, + RDMAP_REMOTE_PROT = 0x01, + RDMAP_REMOTE_OP = 0x02, + DDP_LOCAL_CATA = 0x00, + DDP_TAGGED_ERR = 0x01, + DDP_UNTAGGED_ERR = 0x02, + DDP_LLP = 0x03 +}; + +enum c4iw_rdma_ecodes { + RDMAP_INV_STAG = 0x00, + RDMAP_BASE_BOUNDS = 0x01, + RDMAP_ACC_VIOL = 0x02, + RDMAP_STAG_NOT_ASSOC = 0x03, + RDMAP_TO_WRAP = 0x04, + RDMAP_INV_VERS = 0x05, + RDMAP_INV_OPCODE = 0x06, + RDMAP_STREAM_CATA = 0x07, + RDMAP_GLOBAL_CATA = 0x08, + RDMAP_CANT_INV_STAG = 0x09, + RDMAP_UNSPECIFIED = 0xff +}; + +enum c4iw_ddp_ecodes { + DDPT_INV_STAG = 0x00, + DDPT_BASE_BOUNDS = 0x01, + DDPT_STAG_NOT_ASSOC = 0x02, + DDPT_TO_WRAP = 0x03, + DDPT_INV_VERS = 0x04, + DDPU_INV_QN = 0x01, + DDPU_INV_MSN_NOBUF = 0x02, + DDPU_INV_MSN_RANGE = 0x03, + DDPU_INV_MO = 0x04, + DDPU_MSG_TOOBIG = 0x05, + DDPU_INV_VERS = 0x06 +}; + +enum c4iw_mpa_ecodes { + MPA_CRC_ERR = 0x02, + MPA_MARKER_ERR = 0x03, + MPA_LOCAL_CATA = 0x05, + MPA_INSUFF_IRD = 0x06, + MPA_NOMATCH_RTR = 0x07, +}; + +enum c4iw_ep_state { + IDLE = 0, + LISTEN, + CONNECTING, + MPA_REQ_WAIT, + MPA_REQ_SENT, + MPA_REQ_RCVD, + MPA_REP_SENT, + FPDU_MODE, + ABORTING, + CLOSING, + MORIBUND, + DEAD, +}; + +enum c4iw_ep_flags { + PEER_ABORT_IN_PROGRESS = 0, + ABORT_REQ_IN_PROGRESS = 1, + RELEASE_RESOURCES = 2, + CLOSE_SENT = 3, + TIMEOUT = 4, + QP_REFERENCED = 5, + STOP_MPA_TIMER = 7, +}; + +enum c4iw_ep_history { + ACT_OPEN_REQ = 0, + ACT_OFLD_CONN = 1, + ACT_OPEN_RPL = 2, + ACT_ESTAB = 3, + PASS_ACCEPT_REQ = 4, + PASS_ESTAB = 5, + ABORT_UPCALL = 6, + ESTAB_UPCALL = 7, + CLOSE_UPCALL = 8, + ULP_ACCEPT = 9, + ULP_REJECT = 10, + TIMEDOUT = 11, + PEER_ABORT = 12, + PEER_CLOSE = 13, + CONNREQ_UPCALL = 14, + ABORT_CONN = 15, + DISCONN_UPCALL = 16, + EP_DISC_CLOSE = 17, + EP_DISC_ABORT = 18, + CONN_RPL_UPCALL = 19, + ACT_RETRY_NOMEM = 20, + ACT_RETRY_INUSE = 21, + CLOSE_CON_RPL = 22, + EP_DISC_FAIL = 24, + QP_REFED = 25, + QP_DEREFED = 26, + CM_ID_REFED = 27, + CM_ID_DEREFED = 28, +}; + +enum conn_pre_alloc_buffers { + CN_ABORT_REQ_BUF, + CN_ABORT_RPL_BUF, + CN_CLOSE_CON_REQ_BUF, + CN_DESTROY_BUF, + CN_FLOWC_BUF, + CN_MAX_CON_BUF +}; + +enum { + FLOWC_LEN = offsetof(struct fw_flowc_wr, mnemval[FW_FLOWC_MNEM_MAX]) +}; + +union cpl_wr_size { + struct cpl_abort_req abrt_req; + struct cpl_abort_rpl abrt_rpl; + struct fw_ri_wr ri_req; + struct cpl_close_con_req close_req; + char flowc_buf[FLOWC_LEN]; +}; + +struct c4iw_ep_common { + struct iw_cm_id *cm_id; + struct c4iw_qp *qp; + struct c4iw_dev *dev; + struct sk_buff_head ep_skb_list; + enum c4iw_ep_state state; + struct kref kref; + struct mutex mutex; + struct sockaddr_storage local_addr; + struct sockaddr_storage remote_addr; + struct c4iw_wr_wait *wr_waitp; + unsigned long flags; + unsigned long history; +}; + +struct c4iw_listen_ep { + struct c4iw_ep_common com; + unsigned int stid; + int backlog; +}; + +struct c4iw_ep_stats { + unsigned connect_neg_adv; + unsigned abort_neg_adv; +}; + +struct c4iw_ep { + struct c4iw_ep_common com; + struct c4iw_ep *parent_ep; + struct timer_list timer; + struct list_head entry; + unsigned int atid; + u32 hwtid; + u32 snd_seq; + u32 rcv_seq; + struct l2t_entry *l2t; + struct dst_entry *dst; + struct sk_buff *mpa_skb; + struct c4iw_mpa_attributes mpa_attr; + u8 mpa_pkt[sizeof(struct mpa_message) + MPA_MAX_PRIVATE_DATA]; + unsigned int mpa_pkt_len; + u32 ird; + u32 ord; + u32 smac_idx; + u32 tx_chan; + u32 mtu; + u16 mss; + u16 emss; + u16 plen; + u16 rss_qid; + u16 txq_idx; + u16 ctrlq_idx; + u8 tos; + u8 retry_with_mpa_v1; + u8 tried_with_mpa_v1; + unsigned int retry_count; + int snd_win; + int rcv_win; + u32 snd_wscale; + struct c4iw_ep_stats stats; +}; + +static inline struct c4iw_ep *to_ep(struct iw_cm_id *cm_id) +{ + return cm_id->provider_data; +} + +static inline struct c4iw_listen_ep *to_listen_ep(struct iw_cm_id *cm_id) +{ + return cm_id->provider_data; +} + +static inline int ocqp_supported(const struct cxgb4_lld_info *infop) +{ +#if defined(__i386__) || defined(__x86_64__) || defined(CONFIG_PPC64) + return infop->vr->ocq.size > 0; +#else + return 0; +#endif +} + +u32 c4iw_id_alloc(struct c4iw_id_table *alloc); +void c4iw_id_free(struct c4iw_id_table *alloc, u32 obj); +int c4iw_id_table_alloc(struct c4iw_id_table *alloc, u32 start, u32 num, + u32 reserved, u32 flags); +void c4iw_id_table_free(struct c4iw_id_table *alloc); + +typedef int (*c4iw_handler_func)(struct c4iw_dev *dev, struct sk_buff *skb); + +int c4iw_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new, + struct l2t_entry *l2t); +void c4iw_put_qpid(struct c4iw_rdev *rdev, u32 qpid, + struct c4iw_dev_ucontext *uctx); +u32 c4iw_get_resource(struct c4iw_id_table *id_table); +void c4iw_put_resource(struct c4iw_id_table *id_table, u32 entry); +int c4iw_init_resource(struct c4iw_rdev *rdev, u32 nr_tpt, + u32 nr_pdid, u32 nr_srqt); +int c4iw_init_ctrl_qp(struct c4iw_rdev *rdev); +int c4iw_pblpool_create(struct c4iw_rdev *rdev); +int c4iw_rqtpool_create(struct c4iw_rdev *rdev); +int c4iw_ocqp_pool_create(struct c4iw_rdev *rdev); +void c4iw_pblpool_destroy(struct c4iw_rdev *rdev); +void c4iw_rqtpool_destroy(struct c4iw_rdev *rdev); +void c4iw_ocqp_pool_destroy(struct c4iw_rdev *rdev); +void c4iw_destroy_resource(struct c4iw_resource *rscp); +int c4iw_destroy_ctrl_qp(struct c4iw_rdev *rdev); +void c4iw_register_device(struct work_struct *work); +void c4iw_unregister_device(struct c4iw_dev *dev); +int __init c4iw_cm_init(void); +void c4iw_cm_term(void); +void c4iw_release_dev_ucontext(struct c4iw_rdev *rdev, + struct c4iw_dev_ucontext *uctx); +void c4iw_init_dev_ucontext(struct c4iw_rdev *rdev, + struct c4iw_dev_ucontext *uctx); +int c4iw_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc); +int c4iw_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr, + const struct ib_send_wr **bad_wr); +int c4iw_post_receive(struct ib_qp *ibqp, const struct ib_recv_wr *wr, + const struct ib_recv_wr **bad_wr); +int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param); +int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog); +int c4iw_destroy_listen(struct iw_cm_id *cm_id); +int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param); +int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len); +void c4iw_qp_add_ref(struct ib_qp *qp); +void c4iw_qp_rem_ref(struct ib_qp *qp); +struct ib_mr *c4iw_alloc_mr(struct ib_pd *pd, + enum ib_mr_type mr_type, + u32 max_num_sg); +int c4iw_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_nents, + unsigned int *sg_offset); +int c4iw_dealloc_mw(struct ib_mw *mw); +void c4iw_dealloc(struct uld_ctx *ctx); +struct ib_mw *c4iw_alloc_mw(struct ib_pd *pd, enum ib_mw_type type, + struct ib_udata *udata); +struct ib_mr *c4iw_reg_user_mr(struct ib_pd *pd, u64 start, + u64 length, u64 virt, int acc, + struct ib_udata *udata); +struct ib_mr *c4iw_get_dma_mr(struct ib_pd *pd, int acc); +int c4iw_dereg_mr(struct ib_mr *ib_mr); +int c4iw_destroy_cq(struct ib_cq *ib_cq); +struct ib_cq *c4iw_create_cq(struct ib_device *ibdev, + const struct ib_cq_init_attr *attr, + struct ib_ucontext *ib_context, + struct ib_udata *udata); +int c4iw_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags); +int c4iw_modify_srq(struct ib_srq *ib_srq, struct ib_srq_attr *attr, + enum ib_srq_attr_mask srq_attr_mask, + struct ib_udata *udata); +int c4iw_destroy_srq(struct ib_srq *ib_srq); +struct ib_srq *c4iw_create_srq(struct ib_pd *pd, + struct ib_srq_init_attr *attrs, + struct ib_udata *udata); +int c4iw_destroy_qp(struct ib_qp *ib_qp); +struct ib_qp *c4iw_create_qp(struct ib_pd *pd, + struct ib_qp_init_attr *attrs, + struct ib_udata *udata); +int c4iw_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, + int attr_mask, struct ib_udata *udata); +int c4iw_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, + int attr_mask, struct ib_qp_init_attr *init_attr); +struct ib_qp *c4iw_get_qp(struct ib_device *dev, int qpn); +u32 c4iw_rqtpool_alloc(struct c4iw_rdev *rdev, int size); +void c4iw_rqtpool_free(struct c4iw_rdev *rdev, u32 addr, int size); +u32 c4iw_pblpool_alloc(struct c4iw_rdev *rdev, int size); +void c4iw_pblpool_free(struct c4iw_rdev *rdev, u32 addr, int size); +u32 c4iw_ocqp_pool_alloc(struct c4iw_rdev *rdev, int size); +void c4iw_ocqp_pool_free(struct c4iw_rdev *rdev, u32 addr, int size); +void c4iw_flush_hw_cq(struct c4iw_cq *chp, struct c4iw_qp *flush_qhp); +void c4iw_count_rcqes(struct t4_cq *cq, struct t4_wq *wq, int *count); +int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp); +int c4iw_flush_rq(struct t4_wq *wq, struct t4_cq *cq, int count); +int c4iw_flush_sq(struct c4iw_qp *qhp); +int c4iw_ev_handler(struct c4iw_dev *rnicp, u32 qid); +u16 c4iw_rqes_posted(struct c4iw_qp *qhp); +int c4iw_post_terminate(struct c4iw_qp *qhp, struct t4_cqe *err_cqe); +u32 c4iw_get_cqid(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx); +void c4iw_put_cqid(struct c4iw_rdev *rdev, u32 qid, + struct c4iw_dev_ucontext *uctx); +u32 c4iw_get_qpid(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx); +void c4iw_put_qpid(struct c4iw_rdev *rdev, u32 qid, + struct c4iw_dev_ucontext *uctx); +void c4iw_ev_dispatch(struct c4iw_dev *dev, struct t4_cqe *err_cqe); + +extern struct cxgb4_client t4c_client; +extern c4iw_handler_func c4iw_handlers[NUM_CPL_CMDS]; +void __iomem *c4iw_bar2_addrs(struct c4iw_rdev *rdev, unsigned int qid, + enum cxgb4_bar2_qtype qtype, + unsigned int *pbar2_qid, u64 *pbar2_pa); +int c4iw_alloc_srq_idx(struct c4iw_rdev *rdev); +void c4iw_free_srq_idx(struct c4iw_rdev *rdev, int idx); +extern void c4iw_log_wr_stats(struct t4_wq *wq, struct t4_cqe *cqe); +extern int c4iw_wr_log; +extern int db_fc_threshold; +extern int db_coalescing_threshold; +extern int use_dsgl; +void c4iw_invalidate_mr(struct c4iw_dev *rhp, u32 rkey); +void c4iw_dispatch_srq_limit_reached_event(struct c4iw_srq *srq); +void c4iw_copy_wr_to_srq(struct t4_srq *srq, union t4_recv_wr *wqe, u8 len16); +void c4iw_flush_srqidx(struct c4iw_qp *qhp, u32 srqidx); +int c4iw_post_srq_recv(struct ib_srq *ibsrq, const struct ib_recv_wr *wr, + const struct ib_recv_wr **bad_wr); +struct c4iw_wr_wait *c4iw_alloc_wr_wait(gfp_t gfp); + +typedef int c4iw_restrack_func(struct sk_buff *msg, + struct rdma_restrack_entry *res); +extern c4iw_restrack_func *c4iw_restrack_funcs[RDMA_RESTRACK_MAX]; + +#endif |