2 * Copyright (c) 2009-2010 Chelsio, Inc. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
17 * - Redistributions in binary form must reproduce the above
18 * copyright notice, this list of conditions and the following
19 * disclaimer in the documentation and/or other materials
20 * provided with the distribution.
22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
25 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
26 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
27 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
28 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 #ifndef __IW_CXGB4_H__
32 #define __IW_CXGB4_H__
34 #include <linux/mutex.h>
35 #include <linux/list.h>
36 #include <linux/spinlock.h>
37 #include <linux/idr.h>
38 #include <linux/workqueue.h>
39 #include <linux/netdevice.h>
40 #include <linux/sched.h>
41 #include <linux/pci.h>
42 #include <linux/dma-mapping.h>
43 #include <linux/inet.h>
44 #include <linux/wait.h>
45 #include <linux/kref.h>
46 #include <linux/timer.h>
48 #include <linux/kfifo.h>
50 #include <asm/byteorder.h>
52 #include <net/net_namespace.h>
54 #include <rdma/ib_verbs.h>
55 #include <rdma/iw_cm.h>
58 #include "cxgb4_uld.h"
62 #define DRV_NAME "iw_cxgb4"
63 #define MOD DRV_NAME ":"
65 extern int c4iw_debug;
66 #define PDBG(fmt, args...) \
69 printk(MOD fmt, ## args); \
74 #define PBL_OFF(rdev_p, a) ((a) - (rdev_p)->lldi.vr->pbl.start)
75 #define RQT_OFF(rdev_p, a) ((a) - (rdev_p)->lldi.vr->rq.start)
77 static inline void *cplhdr(struct sk_buff *skb)
82 #define C4IW_WR_TO (10*HZ)
85 wait_queue_head_t wait;
90 static inline void c4iw_init_wr_wait(struct c4iw_wr_wait *wr_waitp)
94 init_waitqueue_head(&wr_waitp->wait);
97 struct c4iw_resource {
98 struct kfifo tpt_fifo;
99 spinlock_t tpt_fifo_lock;
100 struct kfifo qid_fifo;
101 spinlock_t qid_fifo_lock;
102 struct kfifo pdid_fifo;
103 spinlock_t pdid_fifo_lock;
106 struct c4iw_qid_list {
107 struct list_head entry;
111 struct c4iw_dev_ucontext {
112 struct list_head qpids;
113 struct list_head cqids;
117 enum c4iw_rdev_flags {
118 T4_FATAL_ERROR = (1<<0),
122 struct c4iw_resource resource;
123 unsigned long qpshift;
125 unsigned long cqshift;
127 struct c4iw_dev_ucontext uctx;
128 struct gen_pool *pbl_pool;
129 struct gen_pool *rqt_pool;
131 struct cxgb4_lld_info lldi;
134 static inline int c4iw_fatal_error(struct c4iw_rdev *rdev)
136 return rdev->flags & T4_FATAL_ERROR;
139 static inline int c4iw_num_stags(struct c4iw_rdev *rdev)
141 return min((int)T4_MAX_NUM_STAG, (int)(rdev->lldi.vr->stag.size >> 5));
145 struct ib_device ibdev;
146 struct c4iw_rdev rdev;
147 u32 device_cap_flags;
152 struct list_head entry;
153 struct delayed_work db_drop_task;
154 struct dentry *debugfs_root;
158 static inline struct c4iw_dev *to_c4iw_dev(struct ib_device *ibdev)
160 return container_of(ibdev, struct c4iw_dev, ibdev);
163 static inline struct c4iw_dev *rdev_to_c4iw_dev(struct c4iw_rdev *rdev)
165 return container_of(rdev, struct c4iw_dev, rdev);
168 static inline struct c4iw_cq *get_chp(struct c4iw_dev *rhp, u32 cqid)
170 return idr_find(&rhp->cqidr, cqid);
173 static inline struct c4iw_qp *get_qhp(struct c4iw_dev *rhp, u32 qpid)
175 return idr_find(&rhp->qpidr, qpid);
178 static inline struct c4iw_mr *get_mhp(struct c4iw_dev *rhp, u32 mmid)
180 return idr_find(&rhp->mmidr, mmid);
183 static inline int insert_handle(struct c4iw_dev *rhp, struct idr *idr,
184 void *handle, u32 id)
190 if (!idr_pre_get(idr, GFP_KERNEL))
192 spin_lock_irq(&rhp->lock);
193 ret = idr_get_new_above(idr, handle, id, &newid);
195 spin_unlock_irq(&rhp->lock);
196 } while (ret == -EAGAIN);
201 static inline void remove_handle(struct c4iw_dev *rhp, struct idr *idr, u32 id)
203 spin_lock_irq(&rhp->lock);
205 spin_unlock_irq(&rhp->lock);
211 struct c4iw_dev *rhp;
214 static inline struct c4iw_pd *to_c4iw_pd(struct ib_pd *ibpd)
216 return container_of(ibpd, struct c4iw_pd, ibpd);
219 struct tpt_attributes {
222 enum fw_ri_mem_perms perms;
231 u32 remote_invaliate_disable:1;
233 u32 mw_bind_enable:1;
239 struct ib_umem *umem;
240 struct c4iw_dev *rhp;
242 struct tpt_attributes attr;
245 static inline struct c4iw_mr *to_c4iw_mr(struct ib_mr *ibmr)
247 return container_of(ibmr, struct c4iw_mr, ibmr);
252 struct c4iw_dev *rhp;
254 struct tpt_attributes attr;
257 static inline struct c4iw_mw *to_c4iw_mw(struct ib_mw *ibmw)
259 return container_of(ibmw, struct c4iw_mw, ibmw);
262 struct c4iw_fr_page_list {
263 struct ib_fast_reg_page_list ibpl;
264 DECLARE_PCI_UNMAP_ADDR(mapping);
266 struct c4iw_dev *dev;
270 static inline struct c4iw_fr_page_list *to_c4iw_fr_page_list(
271 struct ib_fast_reg_page_list *ibpl)
273 return container_of(ibpl, struct c4iw_fr_page_list, ibpl);
278 struct c4iw_dev *rhp;
282 wait_queue_head_t wait;
285 static inline struct c4iw_cq *to_c4iw_cq(struct ib_cq *ibcq)
287 return container_of(ibcq, struct c4iw_cq, ibcq);
290 struct c4iw_mpa_attributes {
292 u8 recv_marker_enabled;
293 u8 xmit_marker_enabled;
299 struct c4iw_qp_attributes {
305 u32 sq_max_sges_rdma_write;
309 u8 enable_rdma_write;
311 u8 enable_mmid0_fastreg;
316 char terminate_buffer[52];
317 u32 terminate_msg_len;
318 u8 is_terminate_local;
319 struct c4iw_mpa_attributes mpa_attr;
320 struct c4iw_ep *llp_stream_handle;
325 struct c4iw_dev *rhp;
327 struct c4iw_qp_attributes attr;
331 wait_queue_head_t wait;
332 struct timer_list timer;
335 static inline struct c4iw_qp *to_c4iw_qp(struct ib_qp *ibqp)
337 return container_of(ibqp, struct c4iw_qp, ibqp);
340 struct c4iw_ucontext {
341 struct ib_ucontext ibucontext;
342 struct c4iw_dev_ucontext uctx;
344 spinlock_t mmap_lock;
345 struct list_head mmaps;
348 static inline struct c4iw_ucontext *to_c4iw_ucontext(struct ib_ucontext *c)
350 return container_of(c, struct c4iw_ucontext, ibucontext);
353 struct c4iw_mm_entry {
354 struct list_head entry;
360 static inline struct c4iw_mm_entry *remove_mmap(struct c4iw_ucontext *ucontext,
361 u32 key, unsigned len)
363 struct list_head *pos, *nxt;
364 struct c4iw_mm_entry *mm;
366 spin_lock(&ucontext->mmap_lock);
367 list_for_each_safe(pos, nxt, &ucontext->mmaps) {
369 mm = list_entry(pos, struct c4iw_mm_entry, entry);
370 if (mm->key == key && mm->len == len) {
371 list_del_init(&mm->entry);
372 spin_unlock(&ucontext->mmap_lock);
373 PDBG("%s key 0x%x addr 0x%llx len %d\n", __func__,
374 key, (unsigned long long) mm->addr, mm->len);
378 spin_unlock(&ucontext->mmap_lock);
382 static inline void insert_mmap(struct c4iw_ucontext *ucontext,
383 struct c4iw_mm_entry *mm)
385 spin_lock(&ucontext->mmap_lock);
386 PDBG("%s key 0x%x addr 0x%llx len %d\n", __func__,
387 mm->key, (unsigned long long) mm->addr, mm->len);
388 list_add_tail(&mm->entry, &ucontext->mmaps);
389 spin_unlock(&ucontext->mmap_lock);
392 enum c4iw_qp_attr_mask {
393 C4IW_QP_ATTR_NEXT_STATE = 1 << 0,
394 C4IW_QP_ATTR_ENABLE_RDMA_READ = 1 << 7,
395 C4IW_QP_ATTR_ENABLE_RDMA_WRITE = 1 << 8,
396 C4IW_QP_ATTR_ENABLE_RDMA_BIND = 1 << 9,
397 C4IW_QP_ATTR_MAX_ORD = 1 << 11,
398 C4IW_QP_ATTR_MAX_IRD = 1 << 12,
399 C4IW_QP_ATTR_LLP_STREAM_HANDLE = 1 << 22,
400 C4IW_QP_ATTR_STREAM_MSG_BUFFER = 1 << 23,
401 C4IW_QP_ATTR_MPA_ATTR = 1 << 24,
402 C4IW_QP_ATTR_QP_CONTEXT_ACTIVATE = 1 << 25,
403 C4IW_QP_ATTR_VALID_MODIFY = (C4IW_QP_ATTR_ENABLE_RDMA_READ |
404 C4IW_QP_ATTR_ENABLE_RDMA_WRITE |
405 C4IW_QP_ATTR_MAX_ORD |
406 C4IW_QP_ATTR_MAX_IRD |
407 C4IW_QP_ATTR_LLP_STREAM_HANDLE |
408 C4IW_QP_ATTR_STREAM_MSG_BUFFER |
409 C4IW_QP_ATTR_MPA_ATTR |
410 C4IW_QP_ATTR_QP_CONTEXT_ACTIVATE)
413 int c4iw_modify_qp(struct c4iw_dev *rhp,
415 enum c4iw_qp_attr_mask mask,
416 struct c4iw_qp_attributes *attrs,
423 C4IW_QP_STATE_TERMINATE,
424 C4IW_QP_STATE_CLOSING,
428 static inline int c4iw_convert_state(enum ib_qp_state ib_state)
433 return C4IW_QP_STATE_IDLE;
435 return C4IW_QP_STATE_RTS;
437 return C4IW_QP_STATE_CLOSING;
439 return C4IW_QP_STATE_TERMINATE;
441 return C4IW_QP_STATE_ERROR;
447 static inline u32 c4iw_ib_to_tpt_access(int a)
449 return (a & IB_ACCESS_REMOTE_WRITE ? FW_RI_MEM_ACCESS_REM_WRITE : 0) |
450 (a & IB_ACCESS_REMOTE_READ ? FW_RI_MEM_ACCESS_REM_READ : 0) |
451 (a & IB_ACCESS_LOCAL_WRITE ? FW_RI_MEM_ACCESS_LOCAL_WRITE : 0) |
452 FW_RI_MEM_ACCESS_LOCAL_READ;
455 static inline u32 c4iw_ib_to_tpt_bind_access(int acc)
457 return (acc & IB_ACCESS_REMOTE_WRITE ? FW_RI_MEM_ACCESS_REM_WRITE : 0) |
458 (acc & IB_ACCESS_REMOTE_READ ? FW_RI_MEM_ACCESS_REM_READ : 0);
461 enum c4iw_mmid_state {
462 C4IW_STAG_STATE_VALID,
463 C4IW_STAG_STATE_INVALID
466 #define C4IW_NODE_DESC "cxgb4 Chelsio Communications"
468 #define MPA_KEY_REQ "MPA ID Req Frame"
469 #define MPA_KEY_REP "MPA ID Rep Frame"
471 #define MPA_MAX_PRIVATE_DATA 256
472 #define MPA_REJECT 0x20
474 #define MPA_MARKERS 0x80
475 #define MPA_FLAGS_MASK 0xE0
477 #define c4iw_put_ep(ep) { \
478 PDBG("put_ep (via %s:%u) ep %p refcnt %d\n", __func__, __LINE__, \
479 ep, atomic_read(&((ep)->kref.refcount))); \
480 WARN_ON(atomic_read(&((ep)->kref.refcount)) < 1); \
481 kref_put(&((ep)->kref), _c4iw_free_ep); \
484 #define c4iw_get_ep(ep) { \
485 PDBG("get_ep (via %s:%u) ep %p, refcnt %d\n", __func__, __LINE__, \
486 ep, atomic_read(&((ep)->kref.refcount))); \
487 kref_get(&((ep)->kref)); \
489 void _c4iw_free_ep(struct kref *kref);
495 __be16 private_data_size;
499 struct terminate_message {
506 #define TERM_MAX_LENGTH (sizeof(struct terminate_message) + 2 + 18 + 28)
508 enum c4iw_layers_types {
512 RDMAP_LOCAL_CATA = 0x00,
513 RDMAP_REMOTE_PROT = 0x01,
514 RDMAP_REMOTE_OP = 0x02,
515 DDP_LOCAL_CATA = 0x00,
516 DDP_TAGGED_ERR = 0x01,
517 DDP_UNTAGGED_ERR = 0x02,
521 enum c4iw_rdma_ecodes {
522 RDMAP_INV_STAG = 0x00,
523 RDMAP_BASE_BOUNDS = 0x01,
524 RDMAP_ACC_VIOL = 0x02,
525 RDMAP_STAG_NOT_ASSOC = 0x03,
526 RDMAP_TO_WRAP = 0x04,
527 RDMAP_INV_VERS = 0x05,
528 RDMAP_INV_OPCODE = 0x06,
529 RDMAP_STREAM_CATA = 0x07,
530 RDMAP_GLOBAL_CATA = 0x08,
531 RDMAP_CANT_INV_STAG = 0x09,
532 RDMAP_UNSPECIFIED = 0xff
535 enum c4iw_ddp_ecodes {
536 DDPT_INV_STAG = 0x00,
537 DDPT_BASE_BOUNDS = 0x01,
538 DDPT_STAG_NOT_ASSOC = 0x02,
540 DDPT_INV_VERS = 0x04,
542 DDPU_INV_MSN_NOBUF = 0x02,
543 DDPU_INV_MSN_RANGE = 0x03,
545 DDPU_MSG_TOOBIG = 0x05,
549 enum c4iw_mpa_ecodes {
551 MPA_MARKER_ERR = 0x03
570 PEER_ABORT_IN_PROGRESS = 0,
571 ABORT_REQ_IN_PROGRESS = 1,
572 RELEASE_RESOURCES = 2,
576 struct c4iw_ep_common {
577 struct iw_cm_id *cm_id;
579 struct c4iw_dev *dev;
580 enum c4iw_ep_state state;
583 struct sockaddr_in local_addr;
584 struct sockaddr_in remote_addr;
585 wait_queue_head_t waitq;
591 struct c4iw_listen_ep {
592 struct c4iw_ep_common com;
598 struct c4iw_ep_common com;
599 struct c4iw_ep *parent_ep;
600 struct timer_list timer;
601 struct list_head entry;
606 struct l2t_entry *l2t;
607 struct dst_entry *dst;
608 struct sk_buff *mpa_skb;
609 struct c4iw_mpa_attributes mpa_attr;
610 u8 mpa_pkt[sizeof(struct mpa_message) + MPA_MAX_PRIVATE_DATA];
611 unsigned int mpa_pkt_len;
625 static inline struct c4iw_ep *to_ep(struct iw_cm_id *cm_id)
627 return cm_id->provider_data;
630 static inline struct c4iw_listen_ep *to_listen_ep(struct iw_cm_id *cm_id)
632 return cm_id->provider_data;
635 static inline int compute_wscale(int win)
639 while (wscale < 14 && (65535<<wscale) < win)
644 typedef int (*c4iw_handler_func)(struct c4iw_dev *dev, struct sk_buff *skb);
646 int c4iw_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new,
647 struct l2t_entry *l2t);
648 void c4iw_put_qpid(struct c4iw_rdev *rdev, u32 qpid,
649 struct c4iw_dev_ucontext *uctx);
650 u32 c4iw_get_resource(struct kfifo *fifo, spinlock_t *lock);
651 void c4iw_put_resource(struct kfifo *fifo, u32 entry, spinlock_t *lock);
652 int c4iw_init_resource(struct c4iw_rdev *rdev, u32 nr_tpt, u32 nr_pdid);
653 int c4iw_init_ctrl_qp(struct c4iw_rdev *rdev);
654 int c4iw_pblpool_create(struct c4iw_rdev *rdev);
655 int c4iw_rqtpool_create(struct c4iw_rdev *rdev);
656 void c4iw_pblpool_destroy(struct c4iw_rdev *rdev);
657 void c4iw_rqtpool_destroy(struct c4iw_rdev *rdev);
658 void c4iw_destroy_resource(struct c4iw_resource *rscp);
659 int c4iw_destroy_ctrl_qp(struct c4iw_rdev *rdev);
660 int c4iw_register_device(struct c4iw_dev *dev);
661 void c4iw_unregister_device(struct c4iw_dev *dev);
662 int __init c4iw_cm_init(void);
663 void __exit c4iw_cm_term(void);
664 void c4iw_release_dev_ucontext(struct c4iw_rdev *rdev,
665 struct c4iw_dev_ucontext *uctx);
666 void c4iw_init_dev_ucontext(struct c4iw_rdev *rdev,
667 struct c4iw_dev_ucontext *uctx);
668 int c4iw_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
669 int c4iw_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
670 struct ib_send_wr **bad_wr);
671 int c4iw_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr,
672 struct ib_recv_wr **bad_wr);
673 int c4iw_bind_mw(struct ib_qp *qp, struct ib_mw *mw,
674 struct ib_mw_bind *mw_bind);
675 int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param);
676 int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog);
677 int c4iw_destroy_listen(struct iw_cm_id *cm_id);
678 int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param);
679 int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len);
680 void c4iw_qp_add_ref(struct ib_qp *qp);
681 void c4iw_qp_rem_ref(struct ib_qp *qp);
682 void c4iw_free_fastreg_pbl(struct ib_fast_reg_page_list *page_list);
683 struct ib_fast_reg_page_list *c4iw_alloc_fastreg_pbl(
684 struct ib_device *device,
686 struct ib_mr *c4iw_alloc_fast_reg_mr(struct ib_pd *pd, int pbl_depth);
687 int c4iw_dealloc_mw(struct ib_mw *mw);
688 struct ib_mw *c4iw_alloc_mw(struct ib_pd *pd);
689 struct ib_mr *c4iw_reg_user_mr(struct ib_pd *pd, u64 start,
690 u64 length, u64 virt, int acc,
691 struct ib_udata *udata);
692 struct ib_mr *c4iw_get_dma_mr(struct ib_pd *pd, int acc);
693 struct ib_mr *c4iw_register_phys_mem(struct ib_pd *pd,
694 struct ib_phys_buf *buffer_list,
698 int c4iw_reregister_phys_mem(struct ib_mr *mr,
701 struct ib_phys_buf *buffer_list,
703 int acc, u64 *iova_start);
704 int c4iw_dereg_mr(struct ib_mr *ib_mr);
705 int c4iw_destroy_cq(struct ib_cq *ib_cq);
706 struct ib_cq *c4iw_create_cq(struct ib_device *ibdev, int entries,
708 struct ib_ucontext *ib_context,
709 struct ib_udata *udata);
710 int c4iw_resize_cq(struct ib_cq *cq, int cqe, struct ib_udata *udata);
711 int c4iw_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags);
712 int c4iw_destroy_qp(struct ib_qp *ib_qp);
713 struct ib_qp *c4iw_create_qp(struct ib_pd *pd,
714 struct ib_qp_init_attr *attrs,
715 struct ib_udata *udata);
716 int c4iw_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
717 int attr_mask, struct ib_udata *udata);
718 struct ib_qp *c4iw_get_qp(struct ib_device *dev, int qpn);
719 u32 c4iw_rqtpool_alloc(struct c4iw_rdev *rdev, int size);
720 void c4iw_rqtpool_free(struct c4iw_rdev *rdev, u32 addr, int size);
721 u32 c4iw_pblpool_alloc(struct c4iw_rdev *rdev, int size);
722 void c4iw_pblpool_free(struct c4iw_rdev *rdev, u32 addr, int size);
723 int c4iw_ofld_send(struct c4iw_rdev *rdev, struct sk_buff *skb);
724 void c4iw_flush_hw_cq(struct t4_cq *cq);
725 void c4iw_count_rcqes(struct t4_cq *cq, struct t4_wq *wq, int *count);
726 void c4iw_count_scqes(struct t4_cq *cq, struct t4_wq *wq, int *count);
727 int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp);
728 int c4iw_flush_rq(struct t4_wq *wq, struct t4_cq *cq, int count);
729 int c4iw_flush_sq(struct t4_wq *wq, struct t4_cq *cq, int count);
730 int c4iw_ev_handler(struct c4iw_dev *rnicp, u32 qid);
731 u16 c4iw_rqes_posted(struct c4iw_qp *qhp);
732 int c4iw_post_zb_read(struct c4iw_qp *qhp);
733 int c4iw_post_terminate(struct c4iw_qp *qhp, struct t4_cqe *err_cqe);
734 u32 c4iw_get_cqid(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx);
735 void c4iw_put_cqid(struct c4iw_rdev *rdev, u32 qid,
736 struct c4iw_dev_ucontext *uctx);
737 u32 c4iw_get_qpid(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx);
738 void c4iw_put_qpid(struct c4iw_rdev *rdev, u32 qid,
739 struct c4iw_dev_ucontext *uctx);
740 void c4iw_ev_dispatch(struct c4iw_dev *dev, struct t4_cqe *err_cqe);
742 extern struct cxgb4_client t4c_client;
743 extern c4iw_handler_func c4iw_handlers[NUM_CPL_CMDS];
744 extern int c4iw_max_read_depth;