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
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 #include <linux/module.h>
37 static int db_delay_usecs
= 1;
38 module_param(db_delay_usecs
, int, 0644);
39 MODULE_PARM_DESC(db_delay_usecs
, "Usecs to delay awaiting db fifo to drain");
41 static int ocqp_support
= 1;
42 module_param(ocqp_support
, int, 0644);
43 MODULE_PARM_DESC(ocqp_support
, "Support on-chip SQs (default=1)");
45 int db_fc_threshold
= 1000;
46 module_param(db_fc_threshold
, int, 0644);
47 MODULE_PARM_DESC(db_fc_threshold
,
48 "QP count/threshold that triggers"
49 " automatic db flow control mode (default = 1000)");
51 int db_coalescing_threshold
;
52 module_param(db_coalescing_threshold
, int, 0644);
53 MODULE_PARM_DESC(db_coalescing_threshold
,
54 "QP count/threshold that triggers"
55 " disabling db coalescing (default = 0)");
57 static int max_fr_immd
= T4_MAX_FR_IMMD
;
58 module_param(max_fr_immd
, int, 0644);
59 MODULE_PARM_DESC(max_fr_immd
, "fastreg threshold for using DSGL instead of immedate");
61 static int alloc_ird(struct c4iw_dev
*dev
, u32 ird
)
65 spin_lock_irq(&dev
->lock
);
66 if (ird
<= dev
->avail_ird
)
67 dev
->avail_ird
-= ird
;
70 spin_unlock_irq(&dev
->lock
);
73 dev_warn(&dev
->rdev
.lldi
.pdev
->dev
,
74 "device IRD resources exhausted\n");
79 static void free_ird(struct c4iw_dev
*dev
, int ird
)
81 spin_lock_irq(&dev
->lock
);
82 dev
->avail_ird
+= ird
;
83 spin_unlock_irq(&dev
->lock
);
86 static void set_state(struct c4iw_qp
*qhp
, enum c4iw_qp_state state
)
89 spin_lock_irqsave(&qhp
->lock
, flag
);
90 qhp
->attr
.state
= state
;
91 spin_unlock_irqrestore(&qhp
->lock
, flag
);
94 static void dealloc_oc_sq(struct c4iw_rdev
*rdev
, struct t4_sq
*sq
)
96 c4iw_ocqp_pool_free(rdev
, sq
->dma_addr
, sq
->memsize
);
99 static void dealloc_host_sq(struct c4iw_rdev
*rdev
, struct t4_sq
*sq
)
101 dma_free_coherent(&(rdev
->lldi
.pdev
->dev
), sq
->memsize
, sq
->queue
,
102 pci_unmap_addr(sq
, mapping
));
105 static void dealloc_sq(struct c4iw_rdev
*rdev
, struct t4_sq
*sq
)
107 if (t4_sq_onchip(sq
))
108 dealloc_oc_sq(rdev
, sq
);
110 dealloc_host_sq(rdev
, sq
);
113 static int alloc_oc_sq(struct c4iw_rdev
*rdev
, struct t4_sq
*sq
)
115 if (!ocqp_support
|| !ocqp_supported(&rdev
->lldi
))
117 sq
->dma_addr
= c4iw_ocqp_pool_alloc(rdev
, sq
->memsize
);
120 sq
->phys_addr
= rdev
->oc_mw_pa
+ sq
->dma_addr
-
121 rdev
->lldi
.vr
->ocq
.start
;
122 sq
->queue
= (__force
union t4_wr
*)(rdev
->oc_mw_kva
+ sq
->dma_addr
-
123 rdev
->lldi
.vr
->ocq
.start
);
124 sq
->flags
|= T4_SQ_ONCHIP
;
128 static int alloc_host_sq(struct c4iw_rdev
*rdev
, struct t4_sq
*sq
)
130 sq
->queue
= dma_alloc_coherent(&(rdev
->lldi
.pdev
->dev
), sq
->memsize
,
131 &(sq
->dma_addr
), GFP_KERNEL
);
134 sq
->phys_addr
= virt_to_phys(sq
->queue
);
135 pci_unmap_addr_set(sq
, mapping
, sq
->dma_addr
);
139 static int alloc_sq(struct c4iw_rdev
*rdev
, struct t4_sq
*sq
, int user
)
143 ret
= alloc_oc_sq(rdev
, sq
);
145 ret
= alloc_host_sq(rdev
, sq
);
149 static int destroy_qp(struct c4iw_rdev
*rdev
, struct t4_wq
*wq
,
150 struct c4iw_dev_ucontext
*uctx
)
153 * uP clears EQ contexts when the connection exits rdma mode,
154 * so no need to post a RESET WR for these EQs.
156 dma_free_coherent(&(rdev
->lldi
.pdev
->dev
),
157 wq
->rq
.memsize
, wq
->rq
.queue
,
158 dma_unmap_addr(&wq
->rq
, mapping
));
159 dealloc_sq(rdev
, &wq
->sq
);
160 c4iw_rqtpool_free(rdev
, wq
->rq
.rqt_hwaddr
, wq
->rq
.rqt_size
);
163 c4iw_put_qpid(rdev
, wq
->rq
.qid
, uctx
);
164 c4iw_put_qpid(rdev
, wq
->sq
.qid
, uctx
);
169 * Determine the BAR2 virtual address and qid. If pbar2_pa is not NULL,
170 * then this is a user mapping so compute the page-aligned physical address
173 void __iomem
*c4iw_bar2_addrs(struct c4iw_rdev
*rdev
, unsigned int qid
,
174 enum cxgb4_bar2_qtype qtype
,
175 unsigned int *pbar2_qid
, u64
*pbar2_pa
)
180 ret
= cxgb4_bar2_sge_qregs(rdev
->lldi
.ports
[0], qid
, qtype
,
182 &bar2_qoffset
, pbar2_qid
);
187 *pbar2_pa
= (rdev
->bar2_pa
+ bar2_qoffset
) & PAGE_MASK
;
189 if (is_t4(rdev
->lldi
.adapter_type
))
192 return rdev
->bar2_kva
+ bar2_qoffset
;
195 static int create_qp(struct c4iw_rdev
*rdev
, struct t4_wq
*wq
,
196 struct t4_cq
*rcq
, struct t4_cq
*scq
,
197 struct c4iw_dev_ucontext
*uctx
)
199 int user
= (uctx
!= &rdev
->uctx
);
200 struct fw_ri_res_wr
*res_wr
;
201 struct fw_ri_res
*res
;
203 struct c4iw_wr_wait wr_wait
;
208 wq
->sq
.qid
= c4iw_get_qpid(rdev
, uctx
);
212 wq
->rq
.qid
= c4iw_get_qpid(rdev
, uctx
);
219 wq
->sq
.sw_sq
= kzalloc(wq
->sq
.size
* sizeof *wq
->sq
.sw_sq
,
226 wq
->rq
.sw_rq
= kzalloc(wq
->rq
.size
* sizeof *wq
->rq
.sw_rq
,
235 * RQT must be a power of 2 and at least 16 deep.
237 wq
->rq
.rqt_size
= roundup_pow_of_two(max_t(u16
, wq
->rq
.size
, 16));
238 wq
->rq
.rqt_hwaddr
= c4iw_rqtpool_alloc(rdev
, wq
->rq
.rqt_size
);
239 if (!wq
->rq
.rqt_hwaddr
) {
244 ret
= alloc_sq(rdev
, &wq
->sq
, user
);
247 memset(wq
->sq
.queue
, 0, wq
->sq
.memsize
);
248 dma_unmap_addr_set(&wq
->sq
, mapping
, wq
->sq
.dma_addr
);
250 wq
->rq
.queue
= dma_alloc_coherent(&(rdev
->lldi
.pdev
->dev
),
251 wq
->rq
.memsize
, &(wq
->rq
.dma_addr
),
257 PDBG("%s sq base va 0x%p pa 0x%llx rq base va 0x%p pa 0x%llx\n",
258 __func__
, wq
->sq
.queue
,
259 (unsigned long long)virt_to_phys(wq
->sq
.queue
),
261 (unsigned long long)virt_to_phys(wq
->rq
.queue
));
262 memset(wq
->rq
.queue
, 0, wq
->rq
.memsize
);
263 dma_unmap_addr_set(&wq
->rq
, mapping
, wq
->rq
.dma_addr
);
265 wq
->db
= rdev
->lldi
.db_reg
;
267 wq
->sq
.bar2_va
= c4iw_bar2_addrs(rdev
, wq
->sq
.qid
, T4_BAR2_QTYPE_EGRESS
,
269 user
? &wq
->sq
.bar2_pa
: NULL
);
270 wq
->rq
.bar2_va
= c4iw_bar2_addrs(rdev
, wq
->rq
.qid
, T4_BAR2_QTYPE_EGRESS
,
272 user
? &wq
->rq
.bar2_pa
: NULL
);
275 * User mode must have bar2 access.
277 if (user
&& (!wq
->sq
.bar2_pa
|| !wq
->rq
.bar2_pa
)) {
278 pr_warn(MOD
"%s: sqid %u or rqid %u not in BAR2 range.\n",
279 pci_name(rdev
->lldi
.pdev
), wq
->sq
.qid
, wq
->rq
.qid
);
286 /* build fw_ri_res_wr */
287 wr_len
= sizeof *res_wr
+ 2 * sizeof *res
;
289 skb
= alloc_skb(wr_len
, GFP_KERNEL
);
294 set_wr_txq(skb
, CPL_PRIORITY_CONTROL
, 0);
296 res_wr
= (struct fw_ri_res_wr
*)__skb_put(skb
, wr_len
);
297 memset(res_wr
, 0, wr_len
);
298 res_wr
->op_nres
= cpu_to_be32(
299 FW_WR_OP_V(FW_RI_RES_WR
) |
300 FW_RI_RES_WR_NRES_V(2) |
302 res_wr
->len16_pkd
= cpu_to_be32(DIV_ROUND_UP(wr_len
, 16));
303 res_wr
->cookie
= (uintptr_t)&wr_wait
;
305 res
->u
.sqrq
.restype
= FW_RI_RES_TYPE_SQ
;
306 res
->u
.sqrq
.op
= FW_RI_RES_OP_WRITE
;
309 * eqsize is the number of 64B entries plus the status page size.
311 eqsize
= wq
->sq
.size
* T4_SQ_NUM_SLOTS
+
312 rdev
->hw_queue
.t4_eq_status_entries
;
314 res
->u
.sqrq
.fetchszm_to_iqid
= cpu_to_be32(
315 FW_RI_RES_WR_HOSTFCMODE_V(0) | /* no host cidx updates */
316 FW_RI_RES_WR_CPRIO_V(0) | /* don't keep in chip cache */
317 FW_RI_RES_WR_PCIECHN_V(0) | /* set by uP at ri_init time */
318 (t4_sq_onchip(&wq
->sq
) ? FW_RI_RES_WR_ONCHIP_F
: 0) |
319 FW_RI_RES_WR_IQID_V(scq
->cqid
));
320 res
->u
.sqrq
.dcaen_to_eqsize
= cpu_to_be32(
321 FW_RI_RES_WR_DCAEN_V(0) |
322 FW_RI_RES_WR_DCACPU_V(0) |
323 FW_RI_RES_WR_FBMIN_V(2) |
324 FW_RI_RES_WR_FBMAX_V(2) |
325 FW_RI_RES_WR_CIDXFTHRESHO_V(0) |
326 FW_RI_RES_WR_CIDXFTHRESH_V(0) |
327 FW_RI_RES_WR_EQSIZE_V(eqsize
));
328 res
->u
.sqrq
.eqid
= cpu_to_be32(wq
->sq
.qid
);
329 res
->u
.sqrq
.eqaddr
= cpu_to_be64(wq
->sq
.dma_addr
);
331 res
->u
.sqrq
.restype
= FW_RI_RES_TYPE_RQ
;
332 res
->u
.sqrq
.op
= FW_RI_RES_OP_WRITE
;
335 * eqsize is the number of 64B entries plus the status page size.
337 eqsize
= wq
->rq
.size
* T4_RQ_NUM_SLOTS
+
338 rdev
->hw_queue
.t4_eq_status_entries
;
339 res
->u
.sqrq
.fetchszm_to_iqid
= cpu_to_be32(
340 FW_RI_RES_WR_HOSTFCMODE_V(0) | /* no host cidx updates */
341 FW_RI_RES_WR_CPRIO_V(0) | /* don't keep in chip cache */
342 FW_RI_RES_WR_PCIECHN_V(0) | /* set by uP at ri_init time */
343 FW_RI_RES_WR_IQID_V(rcq
->cqid
));
344 res
->u
.sqrq
.dcaen_to_eqsize
= cpu_to_be32(
345 FW_RI_RES_WR_DCAEN_V(0) |
346 FW_RI_RES_WR_DCACPU_V(0) |
347 FW_RI_RES_WR_FBMIN_V(2) |
348 FW_RI_RES_WR_FBMAX_V(2) |
349 FW_RI_RES_WR_CIDXFTHRESHO_V(0) |
350 FW_RI_RES_WR_CIDXFTHRESH_V(0) |
351 FW_RI_RES_WR_EQSIZE_V(eqsize
));
352 res
->u
.sqrq
.eqid
= cpu_to_be32(wq
->rq
.qid
);
353 res
->u
.sqrq
.eqaddr
= cpu_to_be64(wq
->rq
.dma_addr
);
355 c4iw_init_wr_wait(&wr_wait
);
357 ret
= c4iw_ofld_send(rdev
, skb
);
360 ret
= c4iw_wait_for_reply(rdev
, &wr_wait
, 0, wq
->sq
.qid
, __func__
);
364 PDBG("%s sqid 0x%x rqid 0x%x kdb 0x%p sq_bar2_addr %p rq_bar2_addr %p\n",
365 __func__
, wq
->sq
.qid
, wq
->rq
.qid
, wq
->db
,
366 wq
->sq
.bar2_va
, wq
->rq
.bar2_va
);
370 dma_free_coherent(&(rdev
->lldi
.pdev
->dev
),
371 wq
->rq
.memsize
, wq
->rq
.queue
,
372 dma_unmap_addr(&wq
->rq
, mapping
));
374 dealloc_sq(rdev
, &wq
->sq
);
376 c4iw_rqtpool_free(rdev
, wq
->rq
.rqt_hwaddr
, wq
->rq
.rqt_size
);
382 c4iw_put_qpid(rdev
, wq
->rq
.qid
, uctx
);
384 c4iw_put_qpid(rdev
, wq
->sq
.qid
, uctx
);
388 static int build_immd(struct t4_sq
*sq
, struct fw_ri_immd
*immdp
,
389 struct ib_send_wr
*wr
, int max
, u32
*plenp
)
396 dstp
= (u8
*)immdp
->data
;
397 for (i
= 0; i
< wr
->num_sge
; i
++) {
398 if ((plen
+ wr
->sg_list
[i
].length
) > max
)
400 srcp
= (u8
*)(unsigned long)wr
->sg_list
[i
].addr
;
401 plen
+= wr
->sg_list
[i
].length
;
402 rem
= wr
->sg_list
[i
].length
;
404 if (dstp
== (u8
*)&sq
->queue
[sq
->size
])
405 dstp
= (u8
*)sq
->queue
;
406 if (rem
<= (u8
*)&sq
->queue
[sq
->size
] - dstp
)
409 len
= (u8
*)&sq
->queue
[sq
->size
] - dstp
;
410 memcpy(dstp
, srcp
, len
);
416 len
= roundup(plen
+ sizeof *immdp
, 16) - (plen
+ sizeof *immdp
);
418 memset(dstp
, 0, len
);
419 immdp
->op
= FW_RI_DATA_IMMD
;
422 immdp
->immdlen
= cpu_to_be32(plen
);
427 static int build_isgl(__be64
*queue_start
, __be64
*queue_end
,
428 struct fw_ri_isgl
*isglp
, struct ib_sge
*sg_list
,
429 int num_sge
, u32
*plenp
)
434 __be64
*flitp
= (__be64
*)isglp
->sge
;
436 for (i
= 0; i
< num_sge
; i
++) {
437 if ((plen
+ sg_list
[i
].length
) < plen
)
439 plen
+= sg_list
[i
].length
;
440 *flitp
= cpu_to_be64(((u64
)sg_list
[i
].lkey
<< 32) |
442 if (++flitp
== queue_end
)
444 *flitp
= cpu_to_be64(sg_list
[i
].addr
);
445 if (++flitp
== queue_end
)
448 *flitp
= (__force __be64
)0;
449 isglp
->op
= FW_RI_DATA_ISGL
;
451 isglp
->nsge
= cpu_to_be16(num_sge
);
458 static int build_rdma_send(struct t4_sq
*sq
, union t4_wr
*wqe
,
459 struct ib_send_wr
*wr
, u8
*len16
)
465 if (wr
->num_sge
> T4_MAX_SEND_SGE
)
467 switch (wr
->opcode
) {
469 if (wr
->send_flags
& IB_SEND_SOLICITED
)
470 wqe
->send
.sendop_pkd
= cpu_to_be32(
471 FW_RI_SEND_WR_SENDOP_V(FW_RI_SEND_WITH_SE
));
473 wqe
->send
.sendop_pkd
= cpu_to_be32(
474 FW_RI_SEND_WR_SENDOP_V(FW_RI_SEND
));
475 wqe
->send
.stag_inv
= 0;
477 case IB_WR_SEND_WITH_INV
:
478 if (wr
->send_flags
& IB_SEND_SOLICITED
)
479 wqe
->send
.sendop_pkd
= cpu_to_be32(
480 FW_RI_SEND_WR_SENDOP_V(FW_RI_SEND_WITH_SE_INV
));
482 wqe
->send
.sendop_pkd
= cpu_to_be32(
483 FW_RI_SEND_WR_SENDOP_V(FW_RI_SEND_WITH_INV
));
484 wqe
->send
.stag_inv
= cpu_to_be32(wr
->ex
.invalidate_rkey
);
495 if (wr
->send_flags
& IB_SEND_INLINE
) {
496 ret
= build_immd(sq
, wqe
->send
.u
.immd_src
, wr
,
497 T4_MAX_SEND_INLINE
, &plen
);
500 size
= sizeof wqe
->send
+ sizeof(struct fw_ri_immd
) +
503 ret
= build_isgl((__be64
*)sq
->queue
,
504 (__be64
*)&sq
->queue
[sq
->size
],
505 wqe
->send
.u
.isgl_src
,
506 wr
->sg_list
, wr
->num_sge
, &plen
);
509 size
= sizeof wqe
->send
+ sizeof(struct fw_ri_isgl
) +
510 wr
->num_sge
* sizeof(struct fw_ri_sge
);
513 wqe
->send
.u
.immd_src
[0].op
= FW_RI_DATA_IMMD
;
514 wqe
->send
.u
.immd_src
[0].r1
= 0;
515 wqe
->send
.u
.immd_src
[0].r2
= 0;
516 wqe
->send
.u
.immd_src
[0].immdlen
= 0;
517 size
= sizeof wqe
->send
+ sizeof(struct fw_ri_immd
);
520 *len16
= DIV_ROUND_UP(size
, 16);
521 wqe
->send
.plen
= cpu_to_be32(plen
);
525 static int build_rdma_write(struct t4_sq
*sq
, union t4_wr
*wqe
,
526 struct ib_send_wr
*wr
, u8
*len16
)
532 if (wr
->num_sge
> T4_MAX_SEND_SGE
)
535 wqe
->write
.stag_sink
= cpu_to_be32(rdma_wr(wr
)->rkey
);
536 wqe
->write
.to_sink
= cpu_to_be64(rdma_wr(wr
)->remote_addr
);
538 if (wr
->send_flags
& IB_SEND_INLINE
) {
539 ret
= build_immd(sq
, wqe
->write
.u
.immd_src
, wr
,
540 T4_MAX_WRITE_INLINE
, &plen
);
543 size
= sizeof wqe
->write
+ sizeof(struct fw_ri_immd
) +
546 ret
= build_isgl((__be64
*)sq
->queue
,
547 (__be64
*)&sq
->queue
[sq
->size
],
548 wqe
->write
.u
.isgl_src
,
549 wr
->sg_list
, wr
->num_sge
, &plen
);
552 size
= sizeof wqe
->write
+ sizeof(struct fw_ri_isgl
) +
553 wr
->num_sge
* sizeof(struct fw_ri_sge
);
556 wqe
->write
.u
.immd_src
[0].op
= FW_RI_DATA_IMMD
;
557 wqe
->write
.u
.immd_src
[0].r1
= 0;
558 wqe
->write
.u
.immd_src
[0].r2
= 0;
559 wqe
->write
.u
.immd_src
[0].immdlen
= 0;
560 size
= sizeof wqe
->write
+ sizeof(struct fw_ri_immd
);
563 *len16
= DIV_ROUND_UP(size
, 16);
564 wqe
->write
.plen
= cpu_to_be32(plen
);
568 static int build_rdma_read(union t4_wr
*wqe
, struct ib_send_wr
*wr
, u8
*len16
)
573 wqe
->read
.stag_src
= cpu_to_be32(rdma_wr(wr
)->rkey
);
574 wqe
->read
.to_src_hi
= cpu_to_be32((u32
)(rdma_wr(wr
)->remote_addr
576 wqe
->read
.to_src_lo
= cpu_to_be32((u32
)rdma_wr(wr
)->remote_addr
);
577 wqe
->read
.stag_sink
= cpu_to_be32(wr
->sg_list
[0].lkey
);
578 wqe
->read
.plen
= cpu_to_be32(wr
->sg_list
[0].length
);
579 wqe
->read
.to_sink_hi
= cpu_to_be32((u32
)(wr
->sg_list
[0].addr
581 wqe
->read
.to_sink_lo
= cpu_to_be32((u32
)(wr
->sg_list
[0].addr
));
583 wqe
->read
.stag_src
= cpu_to_be32(2);
584 wqe
->read
.to_src_hi
= 0;
585 wqe
->read
.to_src_lo
= 0;
586 wqe
->read
.stag_sink
= cpu_to_be32(2);
588 wqe
->read
.to_sink_hi
= 0;
589 wqe
->read
.to_sink_lo
= 0;
593 *len16
= DIV_ROUND_UP(sizeof wqe
->read
, 16);
597 static int build_rdma_recv(struct c4iw_qp
*qhp
, union t4_recv_wr
*wqe
,
598 struct ib_recv_wr
*wr
, u8
*len16
)
602 ret
= build_isgl((__be64
*)qhp
->wq
.rq
.queue
,
603 (__be64
*)&qhp
->wq
.rq
.queue
[qhp
->wq
.rq
.size
],
604 &wqe
->recv
.isgl
, wr
->sg_list
, wr
->num_sge
, NULL
);
607 *len16
= DIV_ROUND_UP(sizeof wqe
->recv
+
608 wr
->num_sge
* sizeof(struct fw_ri_sge
), 16);
612 static int build_memreg(struct t4_sq
*sq
, union t4_wr
*wqe
,
613 struct ib_reg_wr
*wr
, u8
*len16
, bool dsgl_supported
)
615 struct c4iw_mr
*mhp
= to_c4iw_mr(wr
->mr
);
616 struct fw_ri_immd
*imdp
;
619 int pbllen
= roundup(mhp
->mpl_len
* sizeof(u64
), 32);
622 if (mhp
->mpl_len
> t4_max_fr_depth(dsgl_supported
&& use_dsgl
))
625 wqe
->fr
.qpbinde_to_dcacpu
= 0;
626 wqe
->fr
.pgsz_shift
= ilog2(wr
->mr
->page_size
) - 12;
627 wqe
->fr
.addr_type
= FW_RI_VA_BASED_TO
;
628 wqe
->fr
.mem_perms
= c4iw_ib_to_tpt_access(wr
->access
);
630 wqe
->fr
.len_lo
= cpu_to_be32(mhp
->ibmr
.length
);
631 wqe
->fr
.stag
= cpu_to_be32(wr
->key
);
632 wqe
->fr
.va_hi
= cpu_to_be32(mhp
->ibmr
.iova
>> 32);
633 wqe
->fr
.va_lo_fbo
= cpu_to_be32(mhp
->ibmr
.iova
&
636 if (dsgl_supported
&& use_dsgl
&& (pbllen
> max_fr_immd
)) {
637 struct fw_ri_dsgl
*sglp
;
639 for (i
= 0; i
< mhp
->mpl_len
; i
++)
640 mhp
->mpl
[i
] = (__force u64
)cpu_to_be64((u64
)mhp
->mpl
[i
]);
642 sglp
= (struct fw_ri_dsgl
*)(&wqe
->fr
+ 1);
643 sglp
->op
= FW_RI_DATA_DSGL
;
645 sglp
->nsge
= cpu_to_be16(1);
646 sglp
->addr0
= cpu_to_be64(mhp
->mpl_addr
);
647 sglp
->len0
= cpu_to_be32(pbllen
);
649 *len16
= DIV_ROUND_UP(sizeof(wqe
->fr
) + sizeof(*sglp
), 16);
651 imdp
= (struct fw_ri_immd
*)(&wqe
->fr
+ 1);
652 imdp
->op
= FW_RI_DATA_IMMD
;
655 imdp
->immdlen
= cpu_to_be32(pbllen
);
656 p
= (__be64
*)(imdp
+ 1);
658 for (i
= 0; i
< mhp
->mpl_len
; i
++) {
659 *p
= cpu_to_be64((u64
)mhp
->mpl
[i
]);
661 if (++p
== (__be64
*)&sq
->queue
[sq
->size
])
662 p
= (__be64
*)sq
->queue
;
668 if (++p
== (__be64
*)&sq
->queue
[sq
->size
])
669 p
= (__be64
*)sq
->queue
;
671 *len16
= DIV_ROUND_UP(sizeof(wqe
->fr
) + sizeof(*imdp
)
677 static int build_inv_stag(union t4_wr
*wqe
, struct ib_send_wr
*wr
,
680 wqe
->inv
.stag_inv
= cpu_to_be32(wr
->ex
.invalidate_rkey
);
682 *len16
= DIV_ROUND_UP(sizeof wqe
->inv
, 16);
686 static void _free_qp(struct kref
*kref
)
690 qhp
= container_of(kref
, struct c4iw_qp
, kref
);
691 PDBG("%s qhp %p\n", __func__
, qhp
);
695 void c4iw_qp_add_ref(struct ib_qp
*qp
)
697 PDBG("%s ib_qp %p\n", __func__
, qp
);
698 kref_get(&to_c4iw_qp(qp
)->kref
);
701 void c4iw_qp_rem_ref(struct ib_qp
*qp
)
703 PDBG("%s ib_qp %p\n", __func__
, qp
);
704 kref_put(&to_c4iw_qp(qp
)->kref
, _free_qp
);
707 static void add_to_fc_list(struct list_head
*head
, struct list_head
*entry
)
709 if (list_empty(entry
))
710 list_add_tail(entry
, head
);
713 static int ring_kernel_sq_db(struct c4iw_qp
*qhp
, u16 inc
)
717 spin_lock_irqsave(&qhp
->rhp
->lock
, flags
);
718 spin_lock(&qhp
->lock
);
719 if (qhp
->rhp
->db_state
== NORMAL
)
720 t4_ring_sq_db(&qhp
->wq
, inc
, NULL
);
722 add_to_fc_list(&qhp
->rhp
->db_fc_list
, &qhp
->db_fc_entry
);
723 qhp
->wq
.sq
.wq_pidx_inc
+= inc
;
725 spin_unlock(&qhp
->lock
);
726 spin_unlock_irqrestore(&qhp
->rhp
->lock
, flags
);
730 static int ring_kernel_rq_db(struct c4iw_qp
*qhp
, u16 inc
)
734 spin_lock_irqsave(&qhp
->rhp
->lock
, flags
);
735 spin_lock(&qhp
->lock
);
736 if (qhp
->rhp
->db_state
== NORMAL
)
737 t4_ring_rq_db(&qhp
->wq
, inc
, NULL
);
739 add_to_fc_list(&qhp
->rhp
->db_fc_list
, &qhp
->db_fc_entry
);
740 qhp
->wq
.rq
.wq_pidx_inc
+= inc
;
742 spin_unlock(&qhp
->lock
);
743 spin_unlock_irqrestore(&qhp
->rhp
->lock
, flags
);
747 int c4iw_post_send(struct ib_qp
*ibqp
, struct ib_send_wr
*wr
,
748 struct ib_send_wr
**bad_wr
)
752 enum fw_wr_opcodes fw_opcode
= 0;
753 enum fw_ri_wr_flags fw_flags
;
755 union t4_wr
*wqe
= NULL
;
757 struct t4_swsqe
*swsqe
;
761 qhp
= to_c4iw_qp(ibqp
);
762 spin_lock_irqsave(&qhp
->lock
, flag
);
763 if (t4_wq_in_error(&qhp
->wq
)) {
764 spin_unlock_irqrestore(&qhp
->lock
, flag
);
767 num_wrs
= t4_sq_avail(&qhp
->wq
);
769 spin_unlock_irqrestore(&qhp
->lock
, flag
);
778 wqe
= (union t4_wr
*)((u8
*)qhp
->wq
.sq
.queue
+
779 qhp
->wq
.sq
.wq_pidx
* T4_EQ_ENTRY_SIZE
);
782 if (wr
->send_flags
& IB_SEND_SOLICITED
)
783 fw_flags
|= FW_RI_SOLICITED_EVENT_FLAG
;
784 if (wr
->send_flags
& IB_SEND_SIGNALED
|| qhp
->sq_sig_all
)
785 fw_flags
|= FW_RI_COMPLETION_FLAG
;
786 swsqe
= &qhp
->wq
.sq
.sw_sq
[qhp
->wq
.sq
.pidx
];
787 switch (wr
->opcode
) {
788 case IB_WR_SEND_WITH_INV
:
790 if (wr
->send_flags
& IB_SEND_FENCE
)
791 fw_flags
|= FW_RI_READ_FENCE_FLAG
;
792 fw_opcode
= FW_RI_SEND_WR
;
793 if (wr
->opcode
== IB_WR_SEND
)
794 swsqe
->opcode
= FW_RI_SEND
;
796 swsqe
->opcode
= FW_RI_SEND_WITH_INV
;
797 err
= build_rdma_send(&qhp
->wq
.sq
, wqe
, wr
, &len16
);
799 case IB_WR_RDMA_WRITE
:
800 fw_opcode
= FW_RI_RDMA_WRITE_WR
;
801 swsqe
->opcode
= FW_RI_RDMA_WRITE
;
802 err
= build_rdma_write(&qhp
->wq
.sq
, wqe
, wr
, &len16
);
804 case IB_WR_RDMA_READ
:
805 case IB_WR_RDMA_READ_WITH_INV
:
806 fw_opcode
= FW_RI_RDMA_READ_WR
;
807 swsqe
->opcode
= FW_RI_READ_REQ
;
808 if (wr
->opcode
== IB_WR_RDMA_READ_WITH_INV
)
809 fw_flags
= FW_RI_RDMA_READ_INVALIDATE
;
812 err
= build_rdma_read(wqe
, wr
, &len16
);
815 swsqe
->read_len
= wr
->sg_list
[0].length
;
816 if (!qhp
->wq
.sq
.oldest_read
)
817 qhp
->wq
.sq
.oldest_read
= swsqe
;
820 fw_opcode
= FW_RI_FR_NSMR_WR
;
821 swsqe
->opcode
= FW_RI_FAST_REGISTER
;
822 err
= build_memreg(&qhp
->wq
.sq
, wqe
, reg_wr(wr
), &len16
,
823 qhp
->rhp
->rdev
.lldi
.ulptx_memwrite_dsgl
);
825 case IB_WR_LOCAL_INV
:
826 if (wr
->send_flags
& IB_SEND_FENCE
)
827 fw_flags
|= FW_RI_LOCAL_FENCE_FLAG
;
828 fw_opcode
= FW_RI_INV_LSTAG_WR
;
829 swsqe
->opcode
= FW_RI_LOCAL_INV
;
830 err
= build_inv_stag(wqe
, wr
, &len16
);
833 PDBG("%s post of type=%d TBD!\n", __func__
,
841 swsqe
->idx
= qhp
->wq
.sq
.pidx
;
843 swsqe
->signaled
= (wr
->send_flags
& IB_SEND_SIGNALED
) ||
846 swsqe
->wr_id
= wr
->wr_id
;
848 swsqe
->sge_ts
= cxgb4_read_sge_timestamp(
849 qhp
->rhp
->rdev
.lldi
.ports
[0]);
850 getnstimeofday(&swsqe
->host_ts
);
853 init_wr_hdr(wqe
, qhp
->wq
.sq
.pidx
, fw_opcode
, fw_flags
, len16
);
855 PDBG("%s cookie 0x%llx pidx 0x%x opcode 0x%x read_len %u\n",
856 __func__
, (unsigned long long)wr
->wr_id
, qhp
->wq
.sq
.pidx
,
857 swsqe
->opcode
, swsqe
->read_len
);
860 t4_sq_produce(&qhp
->wq
, len16
);
861 idx
+= DIV_ROUND_UP(len16
*16, T4_EQ_ENTRY_SIZE
);
863 if (!qhp
->rhp
->rdev
.status_page
->db_off
) {
864 t4_ring_sq_db(&qhp
->wq
, idx
, wqe
);
865 spin_unlock_irqrestore(&qhp
->lock
, flag
);
867 spin_unlock_irqrestore(&qhp
->lock
, flag
);
868 ring_kernel_sq_db(qhp
, idx
);
873 int c4iw_post_receive(struct ib_qp
*ibqp
, struct ib_recv_wr
*wr
,
874 struct ib_recv_wr
**bad_wr
)
878 union t4_recv_wr
*wqe
= NULL
;
884 qhp
= to_c4iw_qp(ibqp
);
885 spin_lock_irqsave(&qhp
->lock
, flag
);
886 if (t4_wq_in_error(&qhp
->wq
)) {
887 spin_unlock_irqrestore(&qhp
->lock
, flag
);
890 num_wrs
= t4_rq_avail(&qhp
->wq
);
892 spin_unlock_irqrestore(&qhp
->lock
, flag
);
896 if (wr
->num_sge
> T4_MAX_RECV_SGE
) {
901 wqe
= (union t4_recv_wr
*)((u8
*)qhp
->wq
.rq
.queue
+
905 err
= build_rdma_recv(qhp
, wqe
, wr
, &len16
);
913 qhp
->wq
.rq
.sw_rq
[qhp
->wq
.rq
.pidx
].wr_id
= wr
->wr_id
;
915 qhp
->wq
.rq
.sw_rq
[qhp
->wq
.rq
.pidx
].sge_ts
=
916 cxgb4_read_sge_timestamp(
917 qhp
->rhp
->rdev
.lldi
.ports
[0]);
919 &qhp
->wq
.rq
.sw_rq
[qhp
->wq
.rq
.pidx
].host_ts
);
922 wqe
->recv
.opcode
= FW_RI_RECV_WR
;
924 wqe
->recv
.wrid
= qhp
->wq
.rq
.pidx
;
928 wqe
->recv
.len16
= len16
;
929 PDBG("%s cookie 0x%llx pidx %u\n", __func__
,
930 (unsigned long long) wr
->wr_id
, qhp
->wq
.rq
.pidx
);
931 t4_rq_produce(&qhp
->wq
, len16
);
932 idx
+= DIV_ROUND_UP(len16
*16, T4_EQ_ENTRY_SIZE
);
936 if (!qhp
->rhp
->rdev
.status_page
->db_off
) {
937 t4_ring_rq_db(&qhp
->wq
, idx
, wqe
);
938 spin_unlock_irqrestore(&qhp
->lock
, flag
);
940 spin_unlock_irqrestore(&qhp
->lock
, flag
);
941 ring_kernel_rq_db(qhp
, idx
);
946 static inline void build_term_codes(struct t4_cqe
*err_cqe
, u8
*layer_type
,
956 *layer_type
= LAYER_RDMAP
|DDP_LOCAL_CATA
;
961 status
= CQE_STATUS(err_cqe
);
962 opcode
= CQE_OPCODE(err_cqe
);
963 rqtype
= RQ_TYPE(err_cqe
);
964 send_inv
= (opcode
== FW_RI_SEND_WITH_INV
) ||
965 (opcode
== FW_RI_SEND_WITH_SE_INV
);
966 tagged
= (opcode
== FW_RI_RDMA_WRITE
) ||
967 (rqtype
&& (opcode
== FW_RI_READ_RESP
));
972 *layer_type
= LAYER_RDMAP
|RDMAP_REMOTE_OP
;
973 *ecode
= RDMAP_CANT_INV_STAG
;
975 *layer_type
= LAYER_RDMAP
|RDMAP_REMOTE_PROT
;
976 *ecode
= RDMAP_INV_STAG
;
980 *layer_type
= LAYER_RDMAP
|RDMAP_REMOTE_PROT
;
981 if ((opcode
== FW_RI_SEND_WITH_INV
) ||
982 (opcode
== FW_RI_SEND_WITH_SE_INV
))
983 *ecode
= RDMAP_CANT_INV_STAG
;
985 *ecode
= RDMAP_STAG_NOT_ASSOC
;
988 *layer_type
= LAYER_RDMAP
|RDMAP_REMOTE_PROT
;
989 *ecode
= RDMAP_STAG_NOT_ASSOC
;
992 *layer_type
= LAYER_RDMAP
|RDMAP_REMOTE_PROT
;
993 *ecode
= RDMAP_ACC_VIOL
;
996 *layer_type
= LAYER_RDMAP
|RDMAP_REMOTE_PROT
;
997 *ecode
= RDMAP_TO_WRAP
;
1001 *layer_type
= LAYER_DDP
|DDP_TAGGED_ERR
;
1002 *ecode
= DDPT_BASE_BOUNDS
;
1004 *layer_type
= LAYER_RDMAP
|RDMAP_REMOTE_PROT
;
1005 *ecode
= RDMAP_BASE_BOUNDS
;
1008 case T4_ERR_INVALIDATE_SHARED_MR
:
1009 case T4_ERR_INVALIDATE_MR_WITH_MW_BOUND
:
1010 *layer_type
= LAYER_RDMAP
|RDMAP_REMOTE_OP
;
1011 *ecode
= RDMAP_CANT_INV_STAG
;
1014 case T4_ERR_ECC_PSTAG
:
1015 case T4_ERR_INTERNAL_ERR
:
1016 *layer_type
= LAYER_RDMAP
|RDMAP_LOCAL_CATA
;
1019 case T4_ERR_OUT_OF_RQE
:
1020 *layer_type
= LAYER_DDP
|DDP_UNTAGGED_ERR
;
1021 *ecode
= DDPU_INV_MSN_NOBUF
;
1023 case T4_ERR_PBL_ADDR_BOUND
:
1024 *layer_type
= LAYER_DDP
|DDP_TAGGED_ERR
;
1025 *ecode
= DDPT_BASE_BOUNDS
;
1028 *layer_type
= LAYER_MPA
|DDP_LLP
;
1029 *ecode
= MPA_CRC_ERR
;
1032 *layer_type
= LAYER_MPA
|DDP_LLP
;
1033 *ecode
= MPA_MARKER_ERR
;
1035 case T4_ERR_PDU_LEN_ERR
:
1036 *layer_type
= LAYER_DDP
|DDP_UNTAGGED_ERR
;
1037 *ecode
= DDPU_MSG_TOOBIG
;
1039 case T4_ERR_DDP_VERSION
:
1041 *layer_type
= LAYER_DDP
|DDP_TAGGED_ERR
;
1042 *ecode
= DDPT_INV_VERS
;
1044 *layer_type
= LAYER_DDP
|DDP_UNTAGGED_ERR
;
1045 *ecode
= DDPU_INV_VERS
;
1048 case T4_ERR_RDMA_VERSION
:
1049 *layer_type
= LAYER_RDMAP
|RDMAP_REMOTE_OP
;
1050 *ecode
= RDMAP_INV_VERS
;
1053 *layer_type
= LAYER_RDMAP
|RDMAP_REMOTE_OP
;
1054 *ecode
= RDMAP_INV_OPCODE
;
1056 case T4_ERR_DDP_QUEUE_NUM
:
1057 *layer_type
= LAYER_DDP
|DDP_UNTAGGED_ERR
;
1058 *ecode
= DDPU_INV_QN
;
1061 case T4_ERR_MSN_GAP
:
1062 case T4_ERR_MSN_RANGE
:
1063 case T4_ERR_IRD_OVERFLOW
:
1064 *layer_type
= LAYER_DDP
|DDP_UNTAGGED_ERR
;
1065 *ecode
= DDPU_INV_MSN_RANGE
;
1068 *layer_type
= LAYER_DDP
|DDP_LOCAL_CATA
;
1072 *layer_type
= LAYER_DDP
|DDP_UNTAGGED_ERR
;
1073 *ecode
= DDPU_INV_MO
;
1076 *layer_type
= LAYER_RDMAP
|DDP_LOCAL_CATA
;
1082 static void post_terminate(struct c4iw_qp
*qhp
, struct t4_cqe
*err_cqe
,
1085 struct fw_ri_wr
*wqe
;
1086 struct sk_buff
*skb
;
1087 struct terminate_message
*term
;
1089 PDBG("%s qhp %p qid 0x%x tid %u\n", __func__
, qhp
, qhp
->wq
.sq
.qid
,
1092 skb
= skb_dequeue(&qhp
->ep
->com
.ep_skb_list
);
1096 set_wr_txq(skb
, CPL_PRIORITY_DATA
, qhp
->ep
->txq_idx
);
1098 wqe
= (struct fw_ri_wr
*)__skb_put(skb
, sizeof(*wqe
));
1099 memset(wqe
, 0, sizeof *wqe
);
1100 wqe
->op_compl
= cpu_to_be32(FW_WR_OP_V(FW_RI_INIT_WR
));
1101 wqe
->flowid_len16
= cpu_to_be32(
1102 FW_WR_FLOWID_V(qhp
->ep
->hwtid
) |
1103 FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*wqe
), 16)));
1105 wqe
->u
.terminate
.type
= FW_RI_TYPE_TERMINATE
;
1106 wqe
->u
.terminate
.immdlen
= cpu_to_be32(sizeof *term
);
1107 term
= (struct terminate_message
*)wqe
->u
.terminate
.termmsg
;
1108 if (qhp
->attr
.layer_etype
== (LAYER_MPA
|DDP_LLP
)) {
1109 term
->layer_etype
= qhp
->attr
.layer_etype
;
1110 term
->ecode
= qhp
->attr
.ecode
;
1112 build_term_codes(err_cqe
, &term
->layer_etype
, &term
->ecode
);
1113 c4iw_ofld_send(&qhp
->rhp
->rdev
, skb
);
1117 * Assumes qhp lock is held.
1119 static void __flush_qp(struct c4iw_qp
*qhp
, struct c4iw_cq
*rchp
,
1120 struct c4iw_cq
*schp
)
1123 int rq_flushed
, sq_flushed
;
1126 PDBG("%s qhp %p rchp %p schp %p\n", __func__
, qhp
, rchp
, schp
);
1128 /* locking hierarchy: cq lock first, then qp lock. */
1129 spin_lock_irqsave(&rchp
->lock
, flag
);
1130 spin_lock(&qhp
->lock
);
1132 if (qhp
->wq
.flushed
) {
1133 spin_unlock(&qhp
->lock
);
1134 spin_unlock_irqrestore(&rchp
->lock
, flag
);
1137 qhp
->wq
.flushed
= 1;
1139 c4iw_flush_hw_cq(rchp
);
1140 c4iw_count_rcqes(&rchp
->cq
, &qhp
->wq
, &count
);
1141 rq_flushed
= c4iw_flush_rq(&qhp
->wq
, &rchp
->cq
, count
);
1142 spin_unlock(&qhp
->lock
);
1143 spin_unlock_irqrestore(&rchp
->lock
, flag
);
1145 /* locking hierarchy: cq lock first, then qp lock. */
1146 spin_lock_irqsave(&schp
->lock
, flag
);
1147 spin_lock(&qhp
->lock
);
1149 c4iw_flush_hw_cq(schp
);
1150 sq_flushed
= c4iw_flush_sq(qhp
);
1151 spin_unlock(&qhp
->lock
);
1152 spin_unlock_irqrestore(&schp
->lock
, flag
);
1155 if (t4_clear_cq_armed(&rchp
->cq
) &&
1156 (rq_flushed
|| sq_flushed
)) {
1157 spin_lock_irqsave(&rchp
->comp_handler_lock
, flag
);
1158 (*rchp
->ibcq
.comp_handler
)(&rchp
->ibcq
,
1159 rchp
->ibcq
.cq_context
);
1160 spin_unlock_irqrestore(&rchp
->comp_handler_lock
, flag
);
1163 if (t4_clear_cq_armed(&rchp
->cq
) && rq_flushed
) {
1164 spin_lock_irqsave(&rchp
->comp_handler_lock
, flag
);
1165 (*rchp
->ibcq
.comp_handler
)(&rchp
->ibcq
,
1166 rchp
->ibcq
.cq_context
);
1167 spin_unlock_irqrestore(&rchp
->comp_handler_lock
, flag
);
1169 if (t4_clear_cq_armed(&schp
->cq
) && sq_flushed
) {
1170 spin_lock_irqsave(&schp
->comp_handler_lock
, flag
);
1171 (*schp
->ibcq
.comp_handler
)(&schp
->ibcq
,
1172 schp
->ibcq
.cq_context
);
1173 spin_unlock_irqrestore(&schp
->comp_handler_lock
, flag
);
1178 static void flush_qp(struct c4iw_qp
*qhp
)
1180 struct c4iw_cq
*rchp
, *schp
;
1183 rchp
= to_c4iw_cq(qhp
->ibqp
.recv_cq
);
1184 schp
= to_c4iw_cq(qhp
->ibqp
.send_cq
);
1186 t4_set_wq_in_error(&qhp
->wq
);
1187 if (qhp
->ibqp
.uobject
) {
1188 t4_set_cq_in_error(&rchp
->cq
);
1189 spin_lock_irqsave(&rchp
->comp_handler_lock
, flag
);
1190 (*rchp
->ibcq
.comp_handler
)(&rchp
->ibcq
, rchp
->ibcq
.cq_context
);
1191 spin_unlock_irqrestore(&rchp
->comp_handler_lock
, flag
);
1193 t4_set_cq_in_error(&schp
->cq
);
1194 spin_lock_irqsave(&schp
->comp_handler_lock
, flag
);
1195 (*schp
->ibcq
.comp_handler
)(&schp
->ibcq
,
1196 schp
->ibcq
.cq_context
);
1197 spin_unlock_irqrestore(&schp
->comp_handler_lock
, flag
);
1201 __flush_qp(qhp
, rchp
, schp
);
1204 static int rdma_fini(struct c4iw_dev
*rhp
, struct c4iw_qp
*qhp
,
1207 struct fw_ri_wr
*wqe
;
1209 struct sk_buff
*skb
;
1211 PDBG("%s qhp %p qid 0x%x tid %u\n", __func__
, qhp
, qhp
->wq
.sq
.qid
,
1214 skb
= skb_dequeue(&ep
->com
.ep_skb_list
);
1218 set_wr_txq(skb
, CPL_PRIORITY_DATA
, ep
->txq_idx
);
1220 wqe
= (struct fw_ri_wr
*)__skb_put(skb
, sizeof(*wqe
));
1221 memset(wqe
, 0, sizeof *wqe
);
1222 wqe
->op_compl
= cpu_to_be32(
1223 FW_WR_OP_V(FW_RI_INIT_WR
) |
1225 wqe
->flowid_len16
= cpu_to_be32(
1226 FW_WR_FLOWID_V(ep
->hwtid
) |
1227 FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*wqe
), 16)));
1228 wqe
->cookie
= (uintptr_t)&ep
->com
.wr_wait
;
1230 wqe
->u
.fini
.type
= FW_RI_TYPE_FINI
;
1231 ret
= c4iw_ofld_send(&rhp
->rdev
, skb
);
1235 ret
= c4iw_wait_for_reply(&rhp
->rdev
, &ep
->com
.wr_wait
, qhp
->ep
->hwtid
,
1236 qhp
->wq
.sq
.qid
, __func__
);
1238 PDBG("%s ret %d\n", __func__
, ret
);
1242 static void build_rtr_msg(u8 p2p_type
, struct fw_ri_init
*init
)
1244 PDBG("%s p2p_type = %d\n", __func__
, p2p_type
);
1245 memset(&init
->u
, 0, sizeof init
->u
);
1247 case FW_RI_INIT_P2PTYPE_RDMA_WRITE
:
1248 init
->u
.write
.opcode
= FW_RI_RDMA_WRITE_WR
;
1249 init
->u
.write
.stag_sink
= cpu_to_be32(1);
1250 init
->u
.write
.to_sink
= cpu_to_be64(1);
1251 init
->u
.write
.u
.immd_src
[0].op
= FW_RI_DATA_IMMD
;
1252 init
->u
.write
.len16
= DIV_ROUND_UP(sizeof init
->u
.write
+
1253 sizeof(struct fw_ri_immd
),
1256 case FW_RI_INIT_P2PTYPE_READ_REQ
:
1257 init
->u
.write
.opcode
= FW_RI_RDMA_READ_WR
;
1258 init
->u
.read
.stag_src
= cpu_to_be32(1);
1259 init
->u
.read
.to_src_lo
= cpu_to_be32(1);
1260 init
->u
.read
.stag_sink
= cpu_to_be32(1);
1261 init
->u
.read
.to_sink_lo
= cpu_to_be32(1);
1262 init
->u
.read
.len16
= DIV_ROUND_UP(sizeof init
->u
.read
, 16);
1267 static int rdma_init(struct c4iw_dev
*rhp
, struct c4iw_qp
*qhp
)
1269 struct fw_ri_wr
*wqe
;
1271 struct sk_buff
*skb
;
1273 PDBG("%s qhp %p qid 0x%x tid %u ird %u ord %u\n", __func__
, qhp
,
1274 qhp
->wq
.sq
.qid
, qhp
->ep
->hwtid
, qhp
->ep
->ird
, qhp
->ep
->ord
);
1276 skb
= alloc_skb(sizeof *wqe
, GFP_KERNEL
);
1281 ret
= alloc_ird(rhp
, qhp
->attr
.max_ird
);
1283 qhp
->attr
.max_ird
= 0;
1287 set_wr_txq(skb
, CPL_PRIORITY_DATA
, qhp
->ep
->txq_idx
);
1289 wqe
= (struct fw_ri_wr
*)__skb_put(skb
, sizeof(*wqe
));
1290 memset(wqe
, 0, sizeof *wqe
);
1291 wqe
->op_compl
= cpu_to_be32(
1292 FW_WR_OP_V(FW_RI_INIT_WR
) |
1294 wqe
->flowid_len16
= cpu_to_be32(
1295 FW_WR_FLOWID_V(qhp
->ep
->hwtid
) |
1296 FW_WR_LEN16_V(DIV_ROUND_UP(sizeof(*wqe
), 16)));
1298 wqe
->cookie
= (uintptr_t)&qhp
->ep
->com
.wr_wait
;
1300 wqe
->u
.init
.type
= FW_RI_TYPE_INIT
;
1301 wqe
->u
.init
.mpareqbit_p2ptype
=
1302 FW_RI_WR_MPAREQBIT_V(qhp
->attr
.mpa_attr
.initiator
) |
1303 FW_RI_WR_P2PTYPE_V(qhp
->attr
.mpa_attr
.p2p_type
);
1304 wqe
->u
.init
.mpa_attrs
= FW_RI_MPA_IETF_ENABLE
;
1305 if (qhp
->attr
.mpa_attr
.recv_marker_enabled
)
1306 wqe
->u
.init
.mpa_attrs
|= FW_RI_MPA_RX_MARKER_ENABLE
;
1307 if (qhp
->attr
.mpa_attr
.xmit_marker_enabled
)
1308 wqe
->u
.init
.mpa_attrs
|= FW_RI_MPA_TX_MARKER_ENABLE
;
1309 if (qhp
->attr
.mpa_attr
.crc_enabled
)
1310 wqe
->u
.init
.mpa_attrs
|= FW_RI_MPA_CRC_ENABLE
;
1312 wqe
->u
.init
.qp_caps
= FW_RI_QP_RDMA_READ_ENABLE
|
1313 FW_RI_QP_RDMA_WRITE_ENABLE
|
1314 FW_RI_QP_BIND_ENABLE
;
1315 if (!qhp
->ibqp
.uobject
)
1316 wqe
->u
.init
.qp_caps
|= FW_RI_QP_FAST_REGISTER_ENABLE
|
1317 FW_RI_QP_STAG0_ENABLE
;
1318 wqe
->u
.init
.nrqe
= cpu_to_be16(t4_rqes_posted(&qhp
->wq
));
1319 wqe
->u
.init
.pdid
= cpu_to_be32(qhp
->attr
.pd
);
1320 wqe
->u
.init
.qpid
= cpu_to_be32(qhp
->wq
.sq
.qid
);
1321 wqe
->u
.init
.sq_eqid
= cpu_to_be32(qhp
->wq
.sq
.qid
);
1322 wqe
->u
.init
.rq_eqid
= cpu_to_be32(qhp
->wq
.rq
.qid
);
1323 wqe
->u
.init
.scqid
= cpu_to_be32(qhp
->attr
.scq
);
1324 wqe
->u
.init
.rcqid
= cpu_to_be32(qhp
->attr
.rcq
);
1325 wqe
->u
.init
.ord_max
= cpu_to_be32(qhp
->attr
.max_ord
);
1326 wqe
->u
.init
.ird_max
= cpu_to_be32(qhp
->attr
.max_ird
);
1327 wqe
->u
.init
.iss
= cpu_to_be32(qhp
->ep
->snd_seq
);
1328 wqe
->u
.init
.irs
= cpu_to_be32(qhp
->ep
->rcv_seq
);
1329 wqe
->u
.init
.hwrqsize
= cpu_to_be32(qhp
->wq
.rq
.rqt_size
);
1330 wqe
->u
.init
.hwrqaddr
= cpu_to_be32(qhp
->wq
.rq
.rqt_hwaddr
-
1331 rhp
->rdev
.lldi
.vr
->rq
.start
);
1332 if (qhp
->attr
.mpa_attr
.initiator
)
1333 build_rtr_msg(qhp
->attr
.mpa_attr
.p2p_type
, &wqe
->u
.init
);
1335 ret
= c4iw_ofld_send(&rhp
->rdev
, skb
);
1339 ret
= c4iw_wait_for_reply(&rhp
->rdev
, &qhp
->ep
->com
.wr_wait
,
1340 qhp
->ep
->hwtid
, qhp
->wq
.sq
.qid
, __func__
);
1344 free_ird(rhp
, qhp
->attr
.max_ird
);
1346 PDBG("%s ret %d\n", __func__
, ret
);
1350 int c4iw_modify_qp(struct c4iw_dev
*rhp
, struct c4iw_qp
*qhp
,
1351 enum c4iw_qp_attr_mask mask
,
1352 struct c4iw_qp_attributes
*attrs
,
1356 struct c4iw_qp_attributes newattr
= qhp
->attr
;
1361 struct c4iw_ep
*ep
= NULL
;
1363 PDBG("%s qhp %p sqid 0x%x rqid 0x%x ep %p state %d -> %d\n", __func__
,
1364 qhp
, qhp
->wq
.sq
.qid
, qhp
->wq
.rq
.qid
, qhp
->ep
, qhp
->attr
.state
,
1365 (mask
& C4IW_QP_ATTR_NEXT_STATE
) ? attrs
->next_state
: -1);
1367 mutex_lock(&qhp
->mutex
);
1369 /* Process attr changes if in IDLE */
1370 if (mask
& C4IW_QP_ATTR_VALID_MODIFY
) {
1371 if (qhp
->attr
.state
!= C4IW_QP_STATE_IDLE
) {
1375 if (mask
& C4IW_QP_ATTR_ENABLE_RDMA_READ
)
1376 newattr
.enable_rdma_read
= attrs
->enable_rdma_read
;
1377 if (mask
& C4IW_QP_ATTR_ENABLE_RDMA_WRITE
)
1378 newattr
.enable_rdma_write
= attrs
->enable_rdma_write
;
1379 if (mask
& C4IW_QP_ATTR_ENABLE_RDMA_BIND
)
1380 newattr
.enable_bind
= attrs
->enable_bind
;
1381 if (mask
& C4IW_QP_ATTR_MAX_ORD
) {
1382 if (attrs
->max_ord
> c4iw_max_read_depth
) {
1386 newattr
.max_ord
= attrs
->max_ord
;
1388 if (mask
& C4IW_QP_ATTR_MAX_IRD
) {
1389 if (attrs
->max_ird
> cur_max_read_depth(rhp
)) {
1393 newattr
.max_ird
= attrs
->max_ird
;
1395 qhp
->attr
= newattr
;
1398 if (mask
& C4IW_QP_ATTR_SQ_DB
) {
1399 ret
= ring_kernel_sq_db(qhp
, attrs
->sq_db_inc
);
1402 if (mask
& C4IW_QP_ATTR_RQ_DB
) {
1403 ret
= ring_kernel_rq_db(qhp
, attrs
->rq_db_inc
);
1407 if (!(mask
& C4IW_QP_ATTR_NEXT_STATE
))
1409 if (qhp
->attr
.state
== attrs
->next_state
)
1412 switch (qhp
->attr
.state
) {
1413 case C4IW_QP_STATE_IDLE
:
1414 switch (attrs
->next_state
) {
1415 case C4IW_QP_STATE_RTS
:
1416 if (!(mask
& C4IW_QP_ATTR_LLP_STREAM_HANDLE
)) {
1420 if (!(mask
& C4IW_QP_ATTR_MPA_ATTR
)) {
1424 qhp
->attr
.mpa_attr
= attrs
->mpa_attr
;
1425 qhp
->attr
.llp_stream_handle
= attrs
->llp_stream_handle
;
1426 qhp
->ep
= qhp
->attr
.llp_stream_handle
;
1427 set_state(qhp
, C4IW_QP_STATE_RTS
);
1430 * Ref the endpoint here and deref when we
1431 * disassociate the endpoint from the QP. This
1432 * happens in CLOSING->IDLE transition or *->ERROR
1435 c4iw_get_ep(&qhp
->ep
->com
);
1436 ret
= rdma_init(rhp
, qhp
);
1440 case C4IW_QP_STATE_ERROR
:
1441 set_state(qhp
, C4IW_QP_STATE_ERROR
);
1449 case C4IW_QP_STATE_RTS
:
1450 switch (attrs
->next_state
) {
1451 case C4IW_QP_STATE_CLOSING
:
1452 BUG_ON(atomic_read(&qhp
->ep
->com
.kref
.refcount
) < 2);
1453 t4_set_wq_in_error(&qhp
->wq
);
1454 set_state(qhp
, C4IW_QP_STATE_CLOSING
);
1459 c4iw_get_ep(&qhp
->ep
->com
);
1461 ret
= rdma_fini(rhp
, qhp
, ep
);
1465 case C4IW_QP_STATE_TERMINATE
:
1466 t4_set_wq_in_error(&qhp
->wq
);
1467 set_state(qhp
, C4IW_QP_STATE_TERMINATE
);
1468 qhp
->attr
.layer_etype
= attrs
->layer_etype
;
1469 qhp
->attr
.ecode
= attrs
->ecode
;
1472 c4iw_get_ep(&qhp
->ep
->com
);
1476 terminate
= qhp
->attr
.send_term
;
1477 ret
= rdma_fini(rhp
, qhp
, ep
);
1482 case C4IW_QP_STATE_ERROR
:
1483 t4_set_wq_in_error(&qhp
->wq
);
1484 set_state(qhp
, C4IW_QP_STATE_ERROR
);
1489 c4iw_get_ep(&qhp
->ep
->com
);
1498 case C4IW_QP_STATE_CLOSING
:
1503 switch (attrs
->next_state
) {
1504 case C4IW_QP_STATE_IDLE
:
1506 set_state(qhp
, C4IW_QP_STATE_IDLE
);
1507 qhp
->attr
.llp_stream_handle
= NULL
;
1508 c4iw_put_ep(&qhp
->ep
->com
);
1510 wake_up(&qhp
->wait
);
1512 case C4IW_QP_STATE_ERROR
:
1519 case C4IW_QP_STATE_ERROR
:
1520 if (attrs
->next_state
!= C4IW_QP_STATE_IDLE
) {
1524 if (!t4_sq_empty(&qhp
->wq
) || !t4_rq_empty(&qhp
->wq
)) {
1528 set_state(qhp
, C4IW_QP_STATE_IDLE
);
1530 case C4IW_QP_STATE_TERMINATE
:
1538 printk(KERN_ERR
"%s in a bad state %d\n",
1539 __func__
, qhp
->attr
.state
);
1546 PDBG("%s disassociating ep %p qpid 0x%x\n", __func__
, qhp
->ep
,
1549 /* disassociate the LLP connection */
1550 qhp
->attr
.llp_stream_handle
= NULL
;
1554 set_state(qhp
, C4IW_QP_STATE_ERROR
);
1559 wake_up(&qhp
->wait
);
1561 mutex_unlock(&qhp
->mutex
);
1564 post_terminate(qhp
, NULL
, internal
? GFP_ATOMIC
: GFP_KERNEL
);
1567 * If disconnect is 1, then we need to initiate a disconnect
1568 * on the EP. This can be a normal close (RTS->CLOSING) or
1569 * an abnormal close (RTS/CLOSING->ERROR).
1572 c4iw_ep_disconnect(ep
, abort
, internal
? GFP_ATOMIC
:
1574 c4iw_put_ep(&ep
->com
);
1578 * If free is 1, then we've disassociated the EP from the QP
1579 * and we need to dereference the EP.
1582 c4iw_put_ep(&ep
->com
);
1583 PDBG("%s exit state %d\n", __func__
, qhp
->attr
.state
);
1587 int c4iw_destroy_qp(struct ib_qp
*ib_qp
)
1589 struct c4iw_dev
*rhp
;
1590 struct c4iw_qp
*qhp
;
1591 struct c4iw_qp_attributes attrs
;
1592 struct c4iw_ucontext
*ucontext
;
1594 qhp
= to_c4iw_qp(ib_qp
);
1597 attrs
.next_state
= C4IW_QP_STATE_ERROR
;
1598 if (qhp
->attr
.state
== C4IW_QP_STATE_TERMINATE
)
1599 c4iw_modify_qp(rhp
, qhp
, C4IW_QP_ATTR_NEXT_STATE
, &attrs
, 1);
1601 c4iw_modify_qp(rhp
, qhp
, C4IW_QP_ATTR_NEXT_STATE
, &attrs
, 0);
1602 wait_event(qhp
->wait
, !qhp
->ep
);
1604 remove_handle(rhp
, &rhp
->qpidr
, qhp
->wq
.sq
.qid
);
1606 spin_lock_irq(&rhp
->lock
);
1607 if (!list_empty(&qhp
->db_fc_entry
))
1608 list_del_init(&qhp
->db_fc_entry
);
1609 spin_unlock_irq(&rhp
->lock
);
1610 free_ird(rhp
, qhp
->attr
.max_ird
);
1612 ucontext
= ib_qp
->uobject
?
1613 to_c4iw_ucontext(ib_qp
->uobject
->context
) : NULL
;
1614 destroy_qp(&rhp
->rdev
, &qhp
->wq
,
1615 ucontext
? &ucontext
->uctx
: &rhp
->rdev
.uctx
);
1617 c4iw_qp_rem_ref(ib_qp
);
1619 PDBG("%s ib_qp %p qpid 0x%0x\n", __func__
, ib_qp
, qhp
->wq
.sq
.qid
);
1623 struct ib_qp
*c4iw_create_qp(struct ib_pd
*pd
, struct ib_qp_init_attr
*attrs
,
1624 struct ib_udata
*udata
)
1626 struct c4iw_dev
*rhp
;
1627 struct c4iw_qp
*qhp
;
1628 struct c4iw_pd
*php
;
1629 struct c4iw_cq
*schp
;
1630 struct c4iw_cq
*rchp
;
1631 struct c4iw_create_qp_resp uresp
;
1632 unsigned int sqsize
, rqsize
;
1633 struct c4iw_ucontext
*ucontext
;
1635 struct c4iw_mm_entry
*sq_key_mm
, *rq_key_mm
= NULL
, *sq_db_key_mm
;
1636 struct c4iw_mm_entry
*rq_db_key_mm
= NULL
, *ma_sync_key_mm
= NULL
;
1638 PDBG("%s ib_pd %p\n", __func__
, pd
);
1640 if (attrs
->qp_type
!= IB_QPT_RC
)
1641 return ERR_PTR(-EINVAL
);
1643 php
= to_c4iw_pd(pd
);
1645 schp
= get_chp(rhp
, ((struct c4iw_cq
*)attrs
->send_cq
)->cq
.cqid
);
1646 rchp
= get_chp(rhp
, ((struct c4iw_cq
*)attrs
->recv_cq
)->cq
.cqid
);
1648 return ERR_PTR(-EINVAL
);
1650 if (attrs
->cap
.max_inline_data
> T4_MAX_SEND_INLINE
)
1651 return ERR_PTR(-EINVAL
);
1653 if (attrs
->cap
.max_recv_wr
> rhp
->rdev
.hw_queue
.t4_max_rq_size
)
1654 return ERR_PTR(-E2BIG
);
1655 rqsize
= attrs
->cap
.max_recv_wr
+ 1;
1659 if (attrs
->cap
.max_send_wr
> rhp
->rdev
.hw_queue
.t4_max_sq_size
)
1660 return ERR_PTR(-E2BIG
);
1661 sqsize
= attrs
->cap
.max_send_wr
+ 1;
1665 ucontext
= pd
->uobject
? to_c4iw_ucontext(pd
->uobject
->context
) : NULL
;
1667 qhp
= kzalloc(sizeof(*qhp
), GFP_KERNEL
);
1669 return ERR_PTR(-ENOMEM
);
1670 qhp
->wq
.sq
.size
= sqsize
;
1671 qhp
->wq
.sq
.memsize
=
1672 (sqsize
+ rhp
->rdev
.hw_queue
.t4_eq_status_entries
) *
1673 sizeof(*qhp
->wq
.sq
.queue
) + 16 * sizeof(__be64
);
1674 qhp
->wq
.sq
.flush_cidx
= -1;
1675 qhp
->wq
.rq
.size
= rqsize
;
1676 qhp
->wq
.rq
.memsize
=
1677 (rqsize
+ rhp
->rdev
.hw_queue
.t4_eq_status_entries
) *
1678 sizeof(*qhp
->wq
.rq
.queue
);
1681 qhp
->wq
.sq
.memsize
= roundup(qhp
->wq
.sq
.memsize
, PAGE_SIZE
);
1682 qhp
->wq
.rq
.memsize
= roundup(qhp
->wq
.rq
.memsize
, PAGE_SIZE
);
1685 ret
= create_qp(&rhp
->rdev
, &qhp
->wq
, &schp
->cq
, &rchp
->cq
,
1686 ucontext
? &ucontext
->uctx
: &rhp
->rdev
.uctx
);
1690 attrs
->cap
.max_recv_wr
= rqsize
- 1;
1691 attrs
->cap
.max_send_wr
= sqsize
- 1;
1692 attrs
->cap
.max_inline_data
= T4_MAX_SEND_INLINE
;
1695 qhp
->attr
.pd
= php
->pdid
;
1696 qhp
->attr
.scq
= ((struct c4iw_cq
*) attrs
->send_cq
)->cq
.cqid
;
1697 qhp
->attr
.rcq
= ((struct c4iw_cq
*) attrs
->recv_cq
)->cq
.cqid
;
1698 qhp
->attr
.sq_num_entries
= attrs
->cap
.max_send_wr
;
1699 qhp
->attr
.rq_num_entries
= attrs
->cap
.max_recv_wr
;
1700 qhp
->attr
.sq_max_sges
= attrs
->cap
.max_send_sge
;
1701 qhp
->attr
.sq_max_sges_rdma_write
= attrs
->cap
.max_send_sge
;
1702 qhp
->attr
.rq_max_sges
= attrs
->cap
.max_recv_sge
;
1703 qhp
->attr
.state
= C4IW_QP_STATE_IDLE
;
1704 qhp
->attr
.next_state
= C4IW_QP_STATE_IDLE
;
1705 qhp
->attr
.enable_rdma_read
= 1;
1706 qhp
->attr
.enable_rdma_write
= 1;
1707 qhp
->attr
.enable_bind
= 1;
1708 qhp
->attr
.max_ord
= 0;
1709 qhp
->attr
.max_ird
= 0;
1710 qhp
->sq_sig_all
= attrs
->sq_sig_type
== IB_SIGNAL_ALL_WR
;
1711 spin_lock_init(&qhp
->lock
);
1712 init_completion(&qhp
->sq_drained
);
1713 init_completion(&qhp
->rq_drained
);
1714 mutex_init(&qhp
->mutex
);
1715 init_waitqueue_head(&qhp
->wait
);
1716 kref_init(&qhp
->kref
);
1718 ret
= insert_handle(rhp
, &rhp
->qpidr
, qhp
, qhp
->wq
.sq
.qid
);
1723 sq_key_mm
= kmalloc(sizeof(*sq_key_mm
), GFP_KERNEL
);
1728 rq_key_mm
= kmalloc(sizeof(*rq_key_mm
), GFP_KERNEL
);
1733 sq_db_key_mm
= kmalloc(sizeof(*sq_db_key_mm
), GFP_KERNEL
);
1734 if (!sq_db_key_mm
) {
1738 rq_db_key_mm
= kmalloc(sizeof(*rq_db_key_mm
), GFP_KERNEL
);
1739 if (!rq_db_key_mm
) {
1743 if (t4_sq_onchip(&qhp
->wq
.sq
)) {
1744 ma_sync_key_mm
= kmalloc(sizeof(*ma_sync_key_mm
),
1746 if (!ma_sync_key_mm
) {
1750 uresp
.flags
= C4IW_QPF_ONCHIP
;
1753 uresp
.qid_mask
= rhp
->rdev
.qpmask
;
1754 uresp
.sqid
= qhp
->wq
.sq
.qid
;
1755 uresp
.sq_size
= qhp
->wq
.sq
.size
;
1756 uresp
.sq_memsize
= qhp
->wq
.sq
.memsize
;
1757 uresp
.rqid
= qhp
->wq
.rq
.qid
;
1758 uresp
.rq_size
= qhp
->wq
.rq
.size
;
1759 uresp
.rq_memsize
= qhp
->wq
.rq
.memsize
;
1760 spin_lock(&ucontext
->mmap_lock
);
1761 if (ma_sync_key_mm
) {
1762 uresp
.ma_sync_key
= ucontext
->key
;
1763 ucontext
->key
+= PAGE_SIZE
;
1765 uresp
.ma_sync_key
= 0;
1767 uresp
.sq_key
= ucontext
->key
;
1768 ucontext
->key
+= PAGE_SIZE
;
1769 uresp
.rq_key
= ucontext
->key
;
1770 ucontext
->key
+= PAGE_SIZE
;
1771 uresp
.sq_db_gts_key
= ucontext
->key
;
1772 ucontext
->key
+= PAGE_SIZE
;
1773 uresp
.rq_db_gts_key
= ucontext
->key
;
1774 ucontext
->key
+= PAGE_SIZE
;
1775 spin_unlock(&ucontext
->mmap_lock
);
1776 ret
= ib_copy_to_udata(udata
, &uresp
, sizeof uresp
);
1779 sq_key_mm
->key
= uresp
.sq_key
;
1780 sq_key_mm
->addr
= qhp
->wq
.sq
.phys_addr
;
1781 sq_key_mm
->len
= PAGE_ALIGN(qhp
->wq
.sq
.memsize
);
1782 insert_mmap(ucontext
, sq_key_mm
);
1783 rq_key_mm
->key
= uresp
.rq_key
;
1784 rq_key_mm
->addr
= virt_to_phys(qhp
->wq
.rq
.queue
);
1785 rq_key_mm
->len
= PAGE_ALIGN(qhp
->wq
.rq
.memsize
);
1786 insert_mmap(ucontext
, rq_key_mm
);
1787 sq_db_key_mm
->key
= uresp
.sq_db_gts_key
;
1788 sq_db_key_mm
->addr
= (u64
)(unsigned long)qhp
->wq
.sq
.bar2_pa
;
1789 sq_db_key_mm
->len
= PAGE_SIZE
;
1790 insert_mmap(ucontext
, sq_db_key_mm
);
1791 rq_db_key_mm
->key
= uresp
.rq_db_gts_key
;
1792 rq_db_key_mm
->addr
= (u64
)(unsigned long)qhp
->wq
.rq
.bar2_pa
;
1793 rq_db_key_mm
->len
= PAGE_SIZE
;
1794 insert_mmap(ucontext
, rq_db_key_mm
);
1795 if (ma_sync_key_mm
) {
1796 ma_sync_key_mm
->key
= uresp
.ma_sync_key
;
1797 ma_sync_key_mm
->addr
=
1798 (pci_resource_start(rhp
->rdev
.lldi
.pdev
, 0) +
1799 PCIE_MA_SYNC_A
) & PAGE_MASK
;
1800 ma_sync_key_mm
->len
= PAGE_SIZE
;
1801 insert_mmap(ucontext
, ma_sync_key_mm
);
1804 qhp
->ibqp
.qp_num
= qhp
->wq
.sq
.qid
;
1805 init_timer(&(qhp
->timer
));
1806 INIT_LIST_HEAD(&qhp
->db_fc_entry
);
1807 PDBG("%s sq id %u size %u memsize %zu num_entries %u "
1808 "rq id %u size %u memsize %zu num_entries %u\n", __func__
,
1809 qhp
->wq
.sq
.qid
, qhp
->wq
.sq
.size
, qhp
->wq
.sq
.memsize
,
1810 attrs
->cap
.max_send_wr
, qhp
->wq
.rq
.qid
, qhp
->wq
.rq
.size
,
1811 qhp
->wq
.rq
.memsize
, attrs
->cap
.max_recv_wr
);
1814 kfree(ma_sync_key_mm
);
1816 kfree(rq_db_key_mm
);
1818 kfree(sq_db_key_mm
);
1824 remove_handle(rhp
, &rhp
->qpidr
, qhp
->wq
.sq
.qid
);
1826 destroy_qp(&rhp
->rdev
, &qhp
->wq
,
1827 ucontext
? &ucontext
->uctx
: &rhp
->rdev
.uctx
);
1830 return ERR_PTR(ret
);
1833 int c4iw_ib_modify_qp(struct ib_qp
*ibqp
, struct ib_qp_attr
*attr
,
1834 int attr_mask
, struct ib_udata
*udata
)
1836 struct c4iw_dev
*rhp
;
1837 struct c4iw_qp
*qhp
;
1838 enum c4iw_qp_attr_mask mask
= 0;
1839 struct c4iw_qp_attributes attrs
;
1841 PDBG("%s ib_qp %p\n", __func__
, ibqp
);
1843 /* iwarp does not support the RTR state */
1844 if ((attr_mask
& IB_QP_STATE
) && (attr
->qp_state
== IB_QPS_RTR
))
1845 attr_mask
&= ~IB_QP_STATE
;
1847 /* Make sure we still have something left to do */
1851 memset(&attrs
, 0, sizeof attrs
);
1852 qhp
= to_c4iw_qp(ibqp
);
1855 attrs
.next_state
= c4iw_convert_state(attr
->qp_state
);
1856 attrs
.enable_rdma_read
= (attr
->qp_access_flags
&
1857 IB_ACCESS_REMOTE_READ
) ? 1 : 0;
1858 attrs
.enable_rdma_write
= (attr
->qp_access_flags
&
1859 IB_ACCESS_REMOTE_WRITE
) ? 1 : 0;
1860 attrs
.enable_bind
= (attr
->qp_access_flags
& IB_ACCESS_MW_BIND
) ? 1 : 0;
1863 mask
|= (attr_mask
& IB_QP_STATE
) ? C4IW_QP_ATTR_NEXT_STATE
: 0;
1864 mask
|= (attr_mask
& IB_QP_ACCESS_FLAGS
) ?
1865 (C4IW_QP_ATTR_ENABLE_RDMA_READ
|
1866 C4IW_QP_ATTR_ENABLE_RDMA_WRITE
|
1867 C4IW_QP_ATTR_ENABLE_RDMA_BIND
) : 0;
1870 * Use SQ_PSN and RQ_PSN to pass in IDX_INC values for
1871 * ringing the queue db when we're in DB_FULL mode.
1872 * Only allow this on T4 devices.
1874 attrs
.sq_db_inc
= attr
->sq_psn
;
1875 attrs
.rq_db_inc
= attr
->rq_psn
;
1876 mask
|= (attr_mask
& IB_QP_SQ_PSN
) ? C4IW_QP_ATTR_SQ_DB
: 0;
1877 mask
|= (attr_mask
& IB_QP_RQ_PSN
) ? C4IW_QP_ATTR_RQ_DB
: 0;
1878 if (!is_t4(to_c4iw_qp(ibqp
)->rhp
->rdev
.lldi
.adapter_type
) &&
1879 (mask
& (C4IW_QP_ATTR_SQ_DB
|C4IW_QP_ATTR_RQ_DB
)))
1882 return c4iw_modify_qp(rhp
, qhp
, mask
, &attrs
, 0);
1885 struct ib_qp
*c4iw_get_qp(struct ib_device
*dev
, int qpn
)
1887 PDBG("%s ib_dev %p qpn 0x%x\n", __func__
, dev
, qpn
);
1888 return (struct ib_qp
*)get_qhp(to_c4iw_dev(dev
), qpn
);
1891 int c4iw_ib_query_qp(struct ib_qp
*ibqp
, struct ib_qp_attr
*attr
,
1892 int attr_mask
, struct ib_qp_init_attr
*init_attr
)
1894 struct c4iw_qp
*qhp
= to_c4iw_qp(ibqp
);
1896 memset(attr
, 0, sizeof *attr
);
1897 memset(init_attr
, 0, sizeof *init_attr
);
1898 attr
->qp_state
= to_ib_qp_state(qhp
->attr
.state
);
1899 init_attr
->cap
.max_send_wr
= qhp
->attr
.sq_num_entries
;
1900 init_attr
->cap
.max_recv_wr
= qhp
->attr
.rq_num_entries
;
1901 init_attr
->cap
.max_send_sge
= qhp
->attr
.sq_max_sges
;
1902 init_attr
->cap
.max_recv_sge
= qhp
->attr
.sq_max_sges
;
1903 init_attr
->cap
.max_inline_data
= T4_MAX_SEND_INLINE
;
1904 init_attr
->sq_sig_type
= qhp
->sq_sig_all
? IB_SIGNAL_ALL_WR
: 0;
1908 static void move_qp_to_err(struct c4iw_qp
*qp
)
1910 struct c4iw_qp_attributes attrs
= { .next_state
= C4IW_QP_STATE_ERROR
};
1912 (void)c4iw_modify_qp(qp
->rhp
, qp
, C4IW_QP_ATTR_NEXT_STATE
, &attrs
, 1);
1915 void c4iw_drain_sq(struct ib_qp
*ibqp
)
1917 struct c4iw_qp
*qp
= to_c4iw_qp(ibqp
);
1922 spin_lock_irqsave(&qp
->lock
, flag
);
1923 need_to_wait
= !t4_sq_empty(&qp
->wq
);
1924 spin_unlock_irqrestore(&qp
->lock
, flag
);
1927 wait_for_completion(&qp
->sq_drained
);
1930 void c4iw_drain_rq(struct ib_qp
*ibqp
)
1932 struct c4iw_qp
*qp
= to_c4iw_qp(ibqp
);
1937 spin_lock_irqsave(&qp
->lock
, flag
);
1938 need_to_wait
= !t4_rq_empty(&qp
->wq
);
1939 spin_unlock_irqrestore(&qp
->lock
, flag
);
1942 wait_for_completion(&qp
->rq_drained
);