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cfdda9d7 SW |
1 | /* |
2 | * Copyright (c) 2009-2010 Chelsio, Inc. All rights reserved. | |
3 | * | |
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: | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or | |
11 | * without modification, are permitted provided that the following | |
12 | * conditions are met: | |
13 | * | |
14 | * - Redistributions of source code must retain the above | |
15 | * copyright notice, this list of conditions and the following | |
16 | * disclaimer. | |
17 | * | |
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. | |
22 | * | |
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 | |
30 | * SOFTWARE. | |
31 | */ | |
32 | #include "iw_cxgb4.h" | |
33 | ||
a9c77198 | 34 | static int ocqp_support = 1; |
c6d7b267 | 35 | module_param(ocqp_support, int, 0644); |
a9c77198 | 36 | MODULE_PARM_DESC(ocqp_support, "Support on-chip SQs (default=1)"); |
c6d7b267 | 37 | |
2f5b48c3 SW |
38 | static void set_state(struct c4iw_qp *qhp, enum c4iw_qp_state state) |
39 | { | |
40 | unsigned long flag; | |
41 | spin_lock_irqsave(&qhp->lock, flag); | |
42 | qhp->attr.state = state; | |
43 | spin_unlock_irqrestore(&qhp->lock, flag); | |
44 | } | |
45 | ||
c6d7b267 SW |
46 | static void dealloc_oc_sq(struct c4iw_rdev *rdev, struct t4_sq *sq) |
47 | { | |
48 | c4iw_ocqp_pool_free(rdev, sq->dma_addr, sq->memsize); | |
49 | } | |
50 | ||
51 | static void dealloc_host_sq(struct c4iw_rdev *rdev, struct t4_sq *sq) | |
52 | { | |
53 | dma_free_coherent(&(rdev->lldi.pdev->dev), sq->memsize, sq->queue, | |
54 | pci_unmap_addr(sq, mapping)); | |
55 | } | |
56 | ||
57 | static void dealloc_sq(struct c4iw_rdev *rdev, struct t4_sq *sq) | |
58 | { | |
59 | if (t4_sq_onchip(sq)) | |
60 | dealloc_oc_sq(rdev, sq); | |
61 | else | |
62 | dealloc_host_sq(rdev, sq); | |
63 | } | |
64 | ||
65 | static int alloc_oc_sq(struct c4iw_rdev *rdev, struct t4_sq *sq) | |
66 | { | |
67 | if (!ocqp_support || !t4_ocqp_supported()) | |
68 | return -ENOSYS; | |
69 | sq->dma_addr = c4iw_ocqp_pool_alloc(rdev, sq->memsize); | |
70 | if (!sq->dma_addr) | |
71 | return -ENOMEM; | |
72 | sq->phys_addr = rdev->oc_mw_pa + sq->dma_addr - | |
73 | rdev->lldi.vr->ocq.start; | |
74 | sq->queue = (__force union t4_wr *)(rdev->oc_mw_kva + sq->dma_addr - | |
75 | rdev->lldi.vr->ocq.start); | |
76 | sq->flags |= T4_SQ_ONCHIP; | |
77 | return 0; | |
78 | } | |
79 | ||
80 | static int alloc_host_sq(struct c4iw_rdev *rdev, struct t4_sq *sq) | |
81 | { | |
82 | sq->queue = dma_alloc_coherent(&(rdev->lldi.pdev->dev), sq->memsize, | |
83 | &(sq->dma_addr), GFP_KERNEL); | |
84 | if (!sq->queue) | |
85 | return -ENOMEM; | |
86 | sq->phys_addr = virt_to_phys(sq->queue); | |
87 | pci_unmap_addr_set(sq, mapping, sq->dma_addr); | |
88 | return 0; | |
89 | } | |
90 | ||
cfdda9d7 SW |
91 | static int destroy_qp(struct c4iw_rdev *rdev, struct t4_wq *wq, |
92 | struct c4iw_dev_ucontext *uctx) | |
93 | { | |
94 | /* | |
95 | * uP clears EQ contexts when the connection exits rdma mode, | |
96 | * so no need to post a RESET WR for these EQs. | |
97 | */ | |
98 | dma_free_coherent(&(rdev->lldi.pdev->dev), | |
99 | wq->rq.memsize, wq->rq.queue, | |
f38926aa | 100 | dma_unmap_addr(&wq->rq, mapping)); |
c6d7b267 | 101 | dealloc_sq(rdev, &wq->sq); |
cfdda9d7 SW |
102 | c4iw_rqtpool_free(rdev, wq->rq.rqt_hwaddr, wq->rq.rqt_size); |
103 | kfree(wq->rq.sw_rq); | |
104 | kfree(wq->sq.sw_sq); | |
105 | c4iw_put_qpid(rdev, wq->rq.qid, uctx); | |
106 | c4iw_put_qpid(rdev, wq->sq.qid, uctx); | |
107 | return 0; | |
108 | } | |
109 | ||
110 | static int create_qp(struct c4iw_rdev *rdev, struct t4_wq *wq, | |
111 | struct t4_cq *rcq, struct t4_cq *scq, | |
112 | struct c4iw_dev_ucontext *uctx) | |
113 | { | |
114 | int user = (uctx != &rdev->uctx); | |
115 | struct fw_ri_res_wr *res_wr; | |
116 | struct fw_ri_res *res; | |
117 | int wr_len; | |
118 | struct c4iw_wr_wait wr_wait; | |
119 | struct sk_buff *skb; | |
120 | int ret; | |
121 | int eqsize; | |
122 | ||
123 | wq->sq.qid = c4iw_get_qpid(rdev, uctx); | |
124 | if (!wq->sq.qid) | |
125 | return -ENOMEM; | |
126 | ||
127 | wq->rq.qid = c4iw_get_qpid(rdev, uctx); | |
128 | if (!wq->rq.qid) | |
129 | goto err1; | |
130 | ||
131 | if (!user) { | |
132 | wq->sq.sw_sq = kzalloc(wq->sq.size * sizeof *wq->sq.sw_sq, | |
133 | GFP_KERNEL); | |
134 | if (!wq->sq.sw_sq) | |
135 | goto err2; | |
136 | ||
137 | wq->rq.sw_rq = kzalloc(wq->rq.size * sizeof *wq->rq.sw_rq, | |
138 | GFP_KERNEL); | |
139 | if (!wq->rq.sw_rq) | |
140 | goto err3; | |
141 | } | |
142 | ||
143 | /* | |
144 | * RQT must be a power of 2. | |
145 | */ | |
146 | wq->rq.rqt_size = roundup_pow_of_two(wq->rq.size); | |
147 | wq->rq.rqt_hwaddr = c4iw_rqtpool_alloc(rdev, wq->rq.rqt_size); | |
148 | if (!wq->rq.rqt_hwaddr) | |
149 | goto err4; | |
150 | ||
c6d7b267 SW |
151 | if (user) { |
152 | if (alloc_oc_sq(rdev, &wq->sq) && alloc_host_sq(rdev, &wq->sq)) | |
153 | goto err5; | |
154 | } else | |
155 | if (alloc_host_sq(rdev, &wq->sq)) | |
156 | goto err5; | |
cfdda9d7 | 157 | memset(wq->sq.queue, 0, wq->sq.memsize); |
f38926aa | 158 | dma_unmap_addr_set(&wq->sq, mapping, wq->sq.dma_addr); |
cfdda9d7 SW |
159 | |
160 | wq->rq.queue = dma_alloc_coherent(&(rdev->lldi.pdev->dev), | |
161 | wq->rq.memsize, &(wq->rq.dma_addr), | |
162 | GFP_KERNEL); | |
163 | if (!wq->rq.queue) | |
164 | goto err6; | |
165 | PDBG("%s sq base va 0x%p pa 0x%llx rq base va 0x%p pa 0x%llx\n", | |
166 | __func__, wq->sq.queue, | |
167 | (unsigned long long)virt_to_phys(wq->sq.queue), | |
168 | wq->rq.queue, | |
169 | (unsigned long long)virt_to_phys(wq->rq.queue)); | |
170 | memset(wq->rq.queue, 0, wq->rq.memsize); | |
f38926aa | 171 | dma_unmap_addr_set(&wq->rq, mapping, wq->rq.dma_addr); |
cfdda9d7 SW |
172 | |
173 | wq->db = rdev->lldi.db_reg; | |
174 | wq->gts = rdev->lldi.gts_reg; | |
175 | if (user) { | |
176 | wq->sq.udb = (u64)pci_resource_start(rdev->lldi.pdev, 2) + | |
177 | (wq->sq.qid << rdev->qpshift); | |
178 | wq->sq.udb &= PAGE_MASK; | |
179 | wq->rq.udb = (u64)pci_resource_start(rdev->lldi.pdev, 2) + | |
180 | (wq->rq.qid << rdev->qpshift); | |
181 | wq->rq.udb &= PAGE_MASK; | |
182 | } | |
183 | wq->rdev = rdev; | |
184 | wq->rq.msn = 1; | |
185 | ||
186 | /* build fw_ri_res_wr */ | |
187 | wr_len = sizeof *res_wr + 2 * sizeof *res; | |
188 | ||
d3c814e8 | 189 | skb = alloc_skb(wr_len, GFP_KERNEL); |
cfdda9d7 SW |
190 | if (!skb) { |
191 | ret = -ENOMEM; | |
192 | goto err7; | |
193 | } | |
194 | set_wr_txq(skb, CPL_PRIORITY_CONTROL, 0); | |
195 | ||
196 | res_wr = (struct fw_ri_res_wr *)__skb_put(skb, wr_len); | |
197 | memset(res_wr, 0, wr_len); | |
198 | res_wr->op_nres = cpu_to_be32( | |
199 | FW_WR_OP(FW_RI_RES_WR) | | |
200 | V_FW_RI_RES_WR_NRES(2) | | |
201 | FW_WR_COMPL(1)); | |
202 | res_wr->len16_pkd = cpu_to_be32(DIV_ROUND_UP(wr_len, 16)); | |
c8e081a1 | 203 | res_wr->cookie = (unsigned long) &wr_wait; |
cfdda9d7 SW |
204 | res = res_wr->res; |
205 | res->u.sqrq.restype = FW_RI_RES_TYPE_SQ; | |
206 | res->u.sqrq.op = FW_RI_RES_OP_WRITE; | |
207 | ||
208 | /* | |
209 | * eqsize is the number of 64B entries plus the status page size. | |
210 | */ | |
211 | eqsize = wq->sq.size * T4_SQ_NUM_SLOTS + T4_EQ_STATUS_ENTRIES; | |
212 | ||
213 | res->u.sqrq.fetchszm_to_iqid = cpu_to_be32( | |
214 | V_FW_RI_RES_WR_HOSTFCMODE(0) | /* no host cidx updates */ | |
215 | V_FW_RI_RES_WR_CPRIO(0) | /* don't keep in chip cache */ | |
216 | V_FW_RI_RES_WR_PCIECHN(0) | /* set by uP at ri_init time */ | |
85d215b0 | 217 | (t4_sq_onchip(&wq->sq) ? F_FW_RI_RES_WR_ONCHIP : 0) | |
cfdda9d7 SW |
218 | V_FW_RI_RES_WR_IQID(scq->cqid)); |
219 | res->u.sqrq.dcaen_to_eqsize = cpu_to_be32( | |
220 | V_FW_RI_RES_WR_DCAEN(0) | | |
221 | V_FW_RI_RES_WR_DCACPU(0) | | |
d37ac31d | 222 | V_FW_RI_RES_WR_FBMIN(2) | |
6a09a9d6 | 223 | V_FW_RI_RES_WR_FBMAX(2) | |
cfdda9d7 SW |
224 | V_FW_RI_RES_WR_CIDXFTHRESHO(0) | |
225 | V_FW_RI_RES_WR_CIDXFTHRESH(0) | | |
226 | V_FW_RI_RES_WR_EQSIZE(eqsize)); | |
227 | res->u.sqrq.eqid = cpu_to_be32(wq->sq.qid); | |
228 | res->u.sqrq.eqaddr = cpu_to_be64(wq->sq.dma_addr); | |
229 | res++; | |
230 | res->u.sqrq.restype = FW_RI_RES_TYPE_RQ; | |
231 | res->u.sqrq.op = FW_RI_RES_OP_WRITE; | |
232 | ||
233 | /* | |
234 | * eqsize is the number of 64B entries plus the status page size. | |
235 | */ | |
236 | eqsize = wq->rq.size * T4_RQ_NUM_SLOTS + T4_EQ_STATUS_ENTRIES; | |
237 | res->u.sqrq.fetchszm_to_iqid = cpu_to_be32( | |
238 | V_FW_RI_RES_WR_HOSTFCMODE(0) | /* no host cidx updates */ | |
239 | V_FW_RI_RES_WR_CPRIO(0) | /* don't keep in chip cache */ | |
240 | V_FW_RI_RES_WR_PCIECHN(0) | /* set by uP at ri_init time */ | |
241 | V_FW_RI_RES_WR_IQID(rcq->cqid)); | |
242 | res->u.sqrq.dcaen_to_eqsize = cpu_to_be32( | |
243 | V_FW_RI_RES_WR_DCAEN(0) | | |
244 | V_FW_RI_RES_WR_DCACPU(0) | | |
d37ac31d | 245 | V_FW_RI_RES_WR_FBMIN(2) | |
6a09a9d6 | 246 | V_FW_RI_RES_WR_FBMAX(2) | |
cfdda9d7 SW |
247 | V_FW_RI_RES_WR_CIDXFTHRESHO(0) | |
248 | V_FW_RI_RES_WR_CIDXFTHRESH(0) | | |
249 | V_FW_RI_RES_WR_EQSIZE(eqsize)); | |
250 | res->u.sqrq.eqid = cpu_to_be32(wq->rq.qid); | |
251 | res->u.sqrq.eqaddr = cpu_to_be64(wq->rq.dma_addr); | |
252 | ||
253 | c4iw_init_wr_wait(&wr_wait); | |
254 | ||
255 | ret = c4iw_ofld_send(rdev, skb); | |
256 | if (ret) | |
257 | goto err7; | |
aadc4df3 | 258 | ret = c4iw_wait_for_reply(rdev, &wr_wait, 0, wq->sq.qid, __func__); |
cfdda9d7 SW |
259 | if (ret) |
260 | goto err7; | |
261 | ||
262 | PDBG("%s sqid 0x%x rqid 0x%x kdb 0x%p squdb 0x%llx rqudb 0x%llx\n", | |
263 | __func__, wq->sq.qid, wq->rq.qid, wq->db, | |
264 | (unsigned long long)wq->sq.udb, (unsigned long long)wq->rq.udb); | |
265 | ||
266 | return 0; | |
267 | err7: | |
268 | dma_free_coherent(&(rdev->lldi.pdev->dev), | |
269 | wq->rq.memsize, wq->rq.queue, | |
f38926aa | 270 | dma_unmap_addr(&wq->rq, mapping)); |
cfdda9d7 | 271 | err6: |
c6d7b267 | 272 | dealloc_sq(rdev, &wq->sq); |
cfdda9d7 SW |
273 | err5: |
274 | c4iw_rqtpool_free(rdev, wq->rq.rqt_hwaddr, wq->rq.rqt_size); | |
275 | err4: | |
276 | kfree(wq->rq.sw_rq); | |
277 | err3: | |
278 | kfree(wq->sq.sw_sq); | |
279 | err2: | |
280 | c4iw_put_qpid(rdev, wq->rq.qid, uctx); | |
281 | err1: | |
282 | c4iw_put_qpid(rdev, wq->sq.qid, uctx); | |
283 | return -ENOMEM; | |
284 | } | |
285 | ||
d37ac31d SW |
286 | static int build_immd(struct t4_sq *sq, struct fw_ri_immd *immdp, |
287 | struct ib_send_wr *wr, int max, u32 *plenp) | |
cfdda9d7 | 288 | { |
d37ac31d SW |
289 | u8 *dstp, *srcp; |
290 | u32 plen = 0; | |
cfdda9d7 | 291 | int i; |
d37ac31d SW |
292 | int rem, len; |
293 | ||
294 | dstp = (u8 *)immdp->data; | |
295 | for (i = 0; i < wr->num_sge; i++) { | |
296 | if ((plen + wr->sg_list[i].length) > max) | |
297 | return -EMSGSIZE; | |
298 | srcp = (u8 *)(unsigned long)wr->sg_list[i].addr; | |
299 | plen += wr->sg_list[i].length; | |
300 | rem = wr->sg_list[i].length; | |
301 | while (rem) { | |
302 | if (dstp == (u8 *)&sq->queue[sq->size]) | |
303 | dstp = (u8 *)sq->queue; | |
304 | if (rem <= (u8 *)&sq->queue[sq->size] - dstp) | |
305 | len = rem; | |
306 | else | |
307 | len = (u8 *)&sq->queue[sq->size] - dstp; | |
308 | memcpy(dstp, srcp, len); | |
309 | dstp += len; | |
310 | srcp += len; | |
311 | rem -= len; | |
312 | } | |
313 | } | |
13fecb83 SW |
314 | len = roundup(plen + sizeof *immdp, 16) - (plen + sizeof *immdp); |
315 | if (len) | |
316 | memset(dstp, 0, len); | |
d37ac31d SW |
317 | immdp->op = FW_RI_DATA_IMMD; |
318 | immdp->r1 = 0; | |
319 | immdp->r2 = 0; | |
320 | immdp->immdlen = cpu_to_be32(plen); | |
321 | *plenp = plen; | |
322 | return 0; | |
323 | } | |
324 | ||
325 | static int build_isgl(__be64 *queue_start, __be64 *queue_end, | |
326 | struct fw_ri_isgl *isglp, struct ib_sge *sg_list, | |
327 | int num_sge, u32 *plenp) | |
328 | ||
329 | { | |
330 | int i; | |
331 | u32 plen = 0; | |
332 | __be64 *flitp = (__be64 *)isglp->sge; | |
333 | ||
334 | for (i = 0; i < num_sge; i++) { | |
335 | if ((plen + sg_list[i].length) < plen) | |
336 | return -EMSGSIZE; | |
337 | plen += sg_list[i].length; | |
338 | *flitp = cpu_to_be64(((u64)sg_list[i].lkey << 32) | | |
339 | sg_list[i].length); | |
340 | if (++flitp == queue_end) | |
341 | flitp = queue_start; | |
342 | *flitp = cpu_to_be64(sg_list[i].addr); | |
343 | if (++flitp == queue_end) | |
344 | flitp = queue_start; | |
345 | } | |
13fecb83 | 346 | *flitp = (__force __be64)0; |
d37ac31d SW |
347 | isglp->op = FW_RI_DATA_ISGL; |
348 | isglp->r1 = 0; | |
349 | isglp->nsge = cpu_to_be16(num_sge); | |
350 | isglp->r2 = 0; | |
351 | if (plenp) | |
352 | *plenp = plen; | |
353 | return 0; | |
354 | } | |
355 | ||
356 | static int build_rdma_send(struct t4_sq *sq, union t4_wr *wqe, | |
357 | struct ib_send_wr *wr, u8 *len16) | |
358 | { | |
cfdda9d7 SW |
359 | u32 plen; |
360 | int size; | |
d37ac31d | 361 | int ret; |
cfdda9d7 SW |
362 | |
363 | if (wr->num_sge > T4_MAX_SEND_SGE) | |
364 | return -EINVAL; | |
365 | switch (wr->opcode) { | |
366 | case IB_WR_SEND: | |
367 | if (wr->send_flags & IB_SEND_SOLICITED) | |
368 | wqe->send.sendop_pkd = cpu_to_be32( | |
369 | V_FW_RI_SEND_WR_SENDOP(FW_RI_SEND_WITH_SE)); | |
370 | else | |
371 | wqe->send.sendop_pkd = cpu_to_be32( | |
372 | V_FW_RI_SEND_WR_SENDOP(FW_RI_SEND)); | |
373 | wqe->send.stag_inv = 0; | |
374 | break; | |
375 | case IB_WR_SEND_WITH_INV: | |
376 | if (wr->send_flags & IB_SEND_SOLICITED) | |
377 | wqe->send.sendop_pkd = cpu_to_be32( | |
378 | V_FW_RI_SEND_WR_SENDOP(FW_RI_SEND_WITH_SE_INV)); | |
379 | else | |
380 | wqe->send.sendop_pkd = cpu_to_be32( | |
381 | V_FW_RI_SEND_WR_SENDOP(FW_RI_SEND_WITH_INV)); | |
382 | wqe->send.stag_inv = cpu_to_be32(wr->ex.invalidate_rkey); | |
383 | break; | |
384 | ||
385 | default: | |
386 | return -EINVAL; | |
387 | } | |
d37ac31d | 388 | |
cfdda9d7 SW |
389 | plen = 0; |
390 | if (wr->num_sge) { | |
391 | if (wr->send_flags & IB_SEND_INLINE) { | |
d37ac31d SW |
392 | ret = build_immd(sq, wqe->send.u.immd_src, wr, |
393 | T4_MAX_SEND_INLINE, &plen); | |
394 | if (ret) | |
395 | return ret; | |
cfdda9d7 SW |
396 | size = sizeof wqe->send + sizeof(struct fw_ri_immd) + |
397 | plen; | |
398 | } else { | |
d37ac31d SW |
399 | ret = build_isgl((__be64 *)sq->queue, |
400 | (__be64 *)&sq->queue[sq->size], | |
401 | wqe->send.u.isgl_src, | |
402 | wr->sg_list, wr->num_sge, &plen); | |
403 | if (ret) | |
404 | return ret; | |
cfdda9d7 SW |
405 | size = sizeof wqe->send + sizeof(struct fw_ri_isgl) + |
406 | wr->num_sge * sizeof(struct fw_ri_sge); | |
407 | } | |
408 | } else { | |
409 | wqe->send.u.immd_src[0].op = FW_RI_DATA_IMMD; | |
410 | wqe->send.u.immd_src[0].r1 = 0; | |
411 | wqe->send.u.immd_src[0].r2 = 0; | |
412 | wqe->send.u.immd_src[0].immdlen = 0; | |
413 | size = sizeof wqe->send + sizeof(struct fw_ri_immd); | |
d37ac31d | 414 | plen = 0; |
cfdda9d7 SW |
415 | } |
416 | *len16 = DIV_ROUND_UP(size, 16); | |
417 | wqe->send.plen = cpu_to_be32(plen); | |
418 | return 0; | |
419 | } | |
420 | ||
d37ac31d SW |
421 | static int build_rdma_write(struct t4_sq *sq, union t4_wr *wqe, |
422 | struct ib_send_wr *wr, u8 *len16) | |
cfdda9d7 | 423 | { |
cfdda9d7 SW |
424 | u32 plen; |
425 | int size; | |
d37ac31d | 426 | int ret; |
cfdda9d7 | 427 | |
d37ac31d | 428 | if (wr->num_sge > T4_MAX_SEND_SGE) |
cfdda9d7 SW |
429 | return -EINVAL; |
430 | wqe->write.r2 = 0; | |
431 | wqe->write.stag_sink = cpu_to_be32(wr->wr.rdma.rkey); | |
432 | wqe->write.to_sink = cpu_to_be64(wr->wr.rdma.remote_addr); | |
cfdda9d7 SW |
433 | if (wr->num_sge) { |
434 | if (wr->send_flags & IB_SEND_INLINE) { | |
d37ac31d SW |
435 | ret = build_immd(sq, wqe->write.u.immd_src, wr, |
436 | T4_MAX_WRITE_INLINE, &plen); | |
437 | if (ret) | |
438 | return ret; | |
cfdda9d7 SW |
439 | size = sizeof wqe->write + sizeof(struct fw_ri_immd) + |
440 | plen; | |
441 | } else { | |
d37ac31d SW |
442 | ret = build_isgl((__be64 *)sq->queue, |
443 | (__be64 *)&sq->queue[sq->size], | |
444 | wqe->write.u.isgl_src, | |
445 | wr->sg_list, wr->num_sge, &plen); | |
446 | if (ret) | |
447 | return ret; | |
cfdda9d7 SW |
448 | size = sizeof wqe->write + sizeof(struct fw_ri_isgl) + |
449 | wr->num_sge * sizeof(struct fw_ri_sge); | |
450 | } | |
451 | } else { | |
452 | wqe->write.u.immd_src[0].op = FW_RI_DATA_IMMD; | |
453 | wqe->write.u.immd_src[0].r1 = 0; | |
454 | wqe->write.u.immd_src[0].r2 = 0; | |
455 | wqe->write.u.immd_src[0].immdlen = 0; | |
456 | size = sizeof wqe->write + sizeof(struct fw_ri_immd); | |
d37ac31d | 457 | plen = 0; |
cfdda9d7 SW |
458 | } |
459 | *len16 = DIV_ROUND_UP(size, 16); | |
460 | wqe->write.plen = cpu_to_be32(plen); | |
461 | return 0; | |
462 | } | |
463 | ||
464 | static int build_rdma_read(union t4_wr *wqe, struct ib_send_wr *wr, u8 *len16) | |
465 | { | |
466 | if (wr->num_sge > 1) | |
467 | return -EINVAL; | |
468 | if (wr->num_sge) { | |
469 | wqe->read.stag_src = cpu_to_be32(wr->wr.rdma.rkey); | |
470 | wqe->read.to_src_hi = cpu_to_be32((u32)(wr->wr.rdma.remote_addr | |
471 | >> 32)); | |
472 | wqe->read.to_src_lo = cpu_to_be32((u32)wr->wr.rdma.remote_addr); | |
473 | wqe->read.stag_sink = cpu_to_be32(wr->sg_list[0].lkey); | |
474 | wqe->read.plen = cpu_to_be32(wr->sg_list[0].length); | |
475 | wqe->read.to_sink_hi = cpu_to_be32((u32)(wr->sg_list[0].addr | |
476 | >> 32)); | |
477 | wqe->read.to_sink_lo = cpu_to_be32((u32)(wr->sg_list[0].addr)); | |
478 | } else { | |
479 | wqe->read.stag_src = cpu_to_be32(2); | |
480 | wqe->read.to_src_hi = 0; | |
481 | wqe->read.to_src_lo = 0; | |
482 | wqe->read.stag_sink = cpu_to_be32(2); | |
483 | wqe->read.plen = 0; | |
484 | wqe->read.to_sink_hi = 0; | |
485 | wqe->read.to_sink_lo = 0; | |
486 | } | |
487 | wqe->read.r2 = 0; | |
488 | wqe->read.r5 = 0; | |
489 | *len16 = DIV_ROUND_UP(sizeof wqe->read, 16); | |
490 | return 0; | |
491 | } | |
492 | ||
493 | static int build_rdma_recv(struct c4iw_qp *qhp, union t4_recv_wr *wqe, | |
494 | struct ib_recv_wr *wr, u8 *len16) | |
495 | { | |
d37ac31d | 496 | int ret; |
cfdda9d7 | 497 | |
d37ac31d SW |
498 | ret = build_isgl((__be64 *)qhp->wq.rq.queue, |
499 | (__be64 *)&qhp->wq.rq.queue[qhp->wq.rq.size], | |
500 | &wqe->recv.isgl, wr->sg_list, wr->num_sge, NULL); | |
501 | if (ret) | |
502 | return ret; | |
cfdda9d7 SW |
503 | *len16 = DIV_ROUND_UP(sizeof wqe->recv + |
504 | wr->num_sge * sizeof(struct fw_ri_sge), 16); | |
505 | return 0; | |
506 | } | |
507 | ||
40dbf6ee SW |
508 | static int build_fastreg(struct t4_sq *sq, union t4_wr *wqe, |
509 | struct ib_send_wr *wr, u8 *len16) | |
cfdda9d7 SW |
510 | { |
511 | ||
512 | struct fw_ri_immd *imdp; | |
513 | __be64 *p; | |
514 | int i; | |
515 | int pbllen = roundup(wr->wr.fast_reg.page_list_len * sizeof(u64), 32); | |
40dbf6ee | 516 | int rem; |
cfdda9d7 SW |
517 | |
518 | if (wr->wr.fast_reg.page_list_len > T4_MAX_FR_DEPTH) | |
519 | return -EINVAL; | |
520 | ||
521 | wqe->fr.qpbinde_to_dcacpu = 0; | |
522 | wqe->fr.pgsz_shift = wr->wr.fast_reg.page_shift - 12; | |
523 | wqe->fr.addr_type = FW_RI_VA_BASED_TO; | |
524 | wqe->fr.mem_perms = c4iw_ib_to_tpt_access(wr->wr.fast_reg.access_flags); | |
525 | wqe->fr.len_hi = 0; | |
526 | wqe->fr.len_lo = cpu_to_be32(wr->wr.fast_reg.length); | |
527 | wqe->fr.stag = cpu_to_be32(wr->wr.fast_reg.rkey); | |
528 | wqe->fr.va_hi = cpu_to_be32(wr->wr.fast_reg.iova_start >> 32); | |
529 | wqe->fr.va_lo_fbo = cpu_to_be32(wr->wr.fast_reg.iova_start & | |
530 | 0xffffffff); | |
40dbf6ee SW |
531 | WARN_ON(pbllen > T4_MAX_FR_IMMD); |
532 | imdp = (struct fw_ri_immd *)(&wqe->fr + 1); | |
533 | imdp->op = FW_RI_DATA_IMMD; | |
534 | imdp->r1 = 0; | |
535 | imdp->r2 = 0; | |
536 | imdp->immdlen = cpu_to_be32(pbllen); | |
537 | p = (__be64 *)(imdp + 1); | |
538 | rem = pbllen; | |
539 | for (i = 0; i < wr->wr.fast_reg.page_list_len; i++) { | |
540 | *p = cpu_to_be64((u64)wr->wr.fast_reg.page_list->page_list[i]); | |
541 | rem -= sizeof *p; | |
542 | if (++p == (__be64 *)&sq->queue[sq->size]) | |
543 | p = (__be64 *)sq->queue; | |
544 | } | |
545 | BUG_ON(rem < 0); | |
546 | while (rem) { | |
547 | *p = 0; | |
548 | rem -= sizeof *p; | |
549 | if (++p == (__be64 *)&sq->queue[sq->size]) | |
550 | p = (__be64 *)sq->queue; | |
cfdda9d7 | 551 | } |
40dbf6ee | 552 | *len16 = DIV_ROUND_UP(sizeof wqe->fr + sizeof *imdp + pbllen, 16); |
cfdda9d7 SW |
553 | return 0; |
554 | } | |
555 | ||
556 | static int build_inv_stag(union t4_wr *wqe, struct ib_send_wr *wr, | |
557 | u8 *len16) | |
558 | { | |
559 | wqe->inv.stag_inv = cpu_to_be32(wr->ex.invalidate_rkey); | |
560 | wqe->inv.r2 = 0; | |
561 | *len16 = DIV_ROUND_UP(sizeof wqe->inv, 16); | |
562 | return 0; | |
563 | } | |
564 | ||
565 | void c4iw_qp_add_ref(struct ib_qp *qp) | |
566 | { | |
567 | PDBG("%s ib_qp %p\n", __func__, qp); | |
568 | atomic_inc(&(to_c4iw_qp(qp)->refcnt)); | |
569 | } | |
570 | ||
571 | void c4iw_qp_rem_ref(struct ib_qp *qp) | |
572 | { | |
573 | PDBG("%s ib_qp %p\n", __func__, qp); | |
574 | if (atomic_dec_and_test(&(to_c4iw_qp(qp)->refcnt))) | |
575 | wake_up(&(to_c4iw_qp(qp)->wait)); | |
576 | } | |
577 | ||
578 | int c4iw_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, | |
579 | struct ib_send_wr **bad_wr) | |
580 | { | |
581 | int err = 0; | |
582 | u8 len16 = 0; | |
583 | enum fw_wr_opcodes fw_opcode = 0; | |
584 | enum fw_ri_wr_flags fw_flags; | |
585 | struct c4iw_qp *qhp; | |
586 | union t4_wr *wqe; | |
587 | u32 num_wrs; | |
588 | struct t4_swsqe *swsqe; | |
589 | unsigned long flag; | |
590 | u16 idx = 0; | |
591 | ||
592 | qhp = to_c4iw_qp(ibqp); | |
593 | spin_lock_irqsave(&qhp->lock, flag); | |
594 | if (t4_wq_in_error(&qhp->wq)) { | |
595 | spin_unlock_irqrestore(&qhp->lock, flag); | |
596 | return -EINVAL; | |
597 | } | |
598 | num_wrs = t4_sq_avail(&qhp->wq); | |
599 | if (num_wrs == 0) { | |
600 | spin_unlock_irqrestore(&qhp->lock, flag); | |
601 | return -ENOMEM; | |
602 | } | |
603 | while (wr) { | |
604 | if (num_wrs == 0) { | |
605 | err = -ENOMEM; | |
606 | *bad_wr = wr; | |
607 | break; | |
608 | } | |
d37ac31d SW |
609 | wqe = (union t4_wr *)((u8 *)qhp->wq.sq.queue + |
610 | qhp->wq.sq.wq_pidx * T4_EQ_ENTRY_SIZE); | |
611 | ||
cfdda9d7 SW |
612 | fw_flags = 0; |
613 | if (wr->send_flags & IB_SEND_SOLICITED) | |
614 | fw_flags |= FW_RI_SOLICITED_EVENT_FLAG; | |
615 | if (wr->send_flags & IB_SEND_SIGNALED) | |
616 | fw_flags |= FW_RI_COMPLETION_FLAG; | |
617 | swsqe = &qhp->wq.sq.sw_sq[qhp->wq.sq.pidx]; | |
618 | switch (wr->opcode) { | |
619 | case IB_WR_SEND_WITH_INV: | |
620 | case IB_WR_SEND: | |
621 | if (wr->send_flags & IB_SEND_FENCE) | |
622 | fw_flags |= FW_RI_READ_FENCE_FLAG; | |
623 | fw_opcode = FW_RI_SEND_WR; | |
624 | if (wr->opcode == IB_WR_SEND) | |
625 | swsqe->opcode = FW_RI_SEND; | |
626 | else | |
627 | swsqe->opcode = FW_RI_SEND_WITH_INV; | |
d37ac31d | 628 | err = build_rdma_send(&qhp->wq.sq, wqe, wr, &len16); |
cfdda9d7 SW |
629 | break; |
630 | case IB_WR_RDMA_WRITE: | |
631 | fw_opcode = FW_RI_RDMA_WRITE_WR; | |
632 | swsqe->opcode = FW_RI_RDMA_WRITE; | |
d37ac31d | 633 | err = build_rdma_write(&qhp->wq.sq, wqe, wr, &len16); |
cfdda9d7 SW |
634 | break; |
635 | case IB_WR_RDMA_READ: | |
2f1fb507 | 636 | case IB_WR_RDMA_READ_WITH_INV: |
cfdda9d7 SW |
637 | fw_opcode = FW_RI_RDMA_READ_WR; |
638 | swsqe->opcode = FW_RI_READ_REQ; | |
2f1fb507 | 639 | if (wr->opcode == IB_WR_RDMA_READ_WITH_INV) |
410ade4c | 640 | fw_flags = FW_RI_RDMA_READ_INVALIDATE; |
2f1fb507 SW |
641 | else |
642 | fw_flags = 0; | |
cfdda9d7 SW |
643 | err = build_rdma_read(wqe, wr, &len16); |
644 | if (err) | |
645 | break; | |
646 | swsqe->read_len = wr->sg_list[0].length; | |
647 | if (!qhp->wq.sq.oldest_read) | |
648 | qhp->wq.sq.oldest_read = swsqe; | |
649 | break; | |
650 | case IB_WR_FAST_REG_MR: | |
651 | fw_opcode = FW_RI_FR_NSMR_WR; | |
652 | swsqe->opcode = FW_RI_FAST_REGISTER; | |
40dbf6ee | 653 | err = build_fastreg(&qhp->wq.sq, wqe, wr, &len16); |
cfdda9d7 SW |
654 | break; |
655 | case IB_WR_LOCAL_INV: | |
4ab1eb9c SW |
656 | if (wr->send_flags & IB_SEND_FENCE) |
657 | fw_flags |= FW_RI_LOCAL_FENCE_FLAG; | |
cfdda9d7 SW |
658 | fw_opcode = FW_RI_INV_LSTAG_WR; |
659 | swsqe->opcode = FW_RI_LOCAL_INV; | |
660 | err = build_inv_stag(wqe, wr, &len16); | |
661 | break; | |
662 | default: | |
663 | PDBG("%s post of type=%d TBD!\n", __func__, | |
664 | wr->opcode); | |
665 | err = -EINVAL; | |
666 | } | |
667 | if (err) { | |
668 | *bad_wr = wr; | |
669 | break; | |
670 | } | |
671 | swsqe->idx = qhp->wq.sq.pidx; | |
672 | swsqe->complete = 0; | |
673 | swsqe->signaled = (wr->send_flags & IB_SEND_SIGNALED); | |
674 | swsqe->wr_id = wr->wr_id; | |
675 | ||
676 | init_wr_hdr(wqe, qhp->wq.sq.pidx, fw_opcode, fw_flags, len16); | |
677 | ||
678 | PDBG("%s cookie 0x%llx pidx 0x%x opcode 0x%x read_len %u\n", | |
679 | __func__, (unsigned long long)wr->wr_id, qhp->wq.sq.pidx, | |
680 | swsqe->opcode, swsqe->read_len); | |
681 | wr = wr->next; | |
682 | num_wrs--; | |
d37ac31d SW |
683 | t4_sq_produce(&qhp->wq, len16); |
684 | idx += DIV_ROUND_UP(len16*16, T4_EQ_ENTRY_SIZE); | |
cfdda9d7 SW |
685 | } |
686 | if (t4_wq_db_enabled(&qhp->wq)) | |
687 | t4_ring_sq_db(&qhp->wq, idx); | |
688 | spin_unlock_irqrestore(&qhp->lock, flag); | |
689 | return err; | |
690 | } | |
691 | ||
692 | int c4iw_post_receive(struct ib_qp *ibqp, struct ib_recv_wr *wr, | |
693 | struct ib_recv_wr **bad_wr) | |
694 | { | |
695 | int err = 0; | |
696 | struct c4iw_qp *qhp; | |
697 | union t4_recv_wr *wqe; | |
698 | u32 num_wrs; | |
699 | u8 len16 = 0; | |
700 | unsigned long flag; | |
701 | u16 idx = 0; | |
702 | ||
703 | qhp = to_c4iw_qp(ibqp); | |
704 | spin_lock_irqsave(&qhp->lock, flag); | |
705 | if (t4_wq_in_error(&qhp->wq)) { | |
706 | spin_unlock_irqrestore(&qhp->lock, flag); | |
707 | return -EINVAL; | |
708 | } | |
709 | num_wrs = t4_rq_avail(&qhp->wq); | |
710 | if (num_wrs == 0) { | |
711 | spin_unlock_irqrestore(&qhp->lock, flag); | |
712 | return -ENOMEM; | |
713 | } | |
714 | while (wr) { | |
715 | if (wr->num_sge > T4_MAX_RECV_SGE) { | |
716 | err = -EINVAL; | |
717 | *bad_wr = wr; | |
718 | break; | |
719 | } | |
d37ac31d SW |
720 | wqe = (union t4_recv_wr *)((u8 *)qhp->wq.rq.queue + |
721 | qhp->wq.rq.wq_pidx * | |
722 | T4_EQ_ENTRY_SIZE); | |
cfdda9d7 SW |
723 | if (num_wrs) |
724 | err = build_rdma_recv(qhp, wqe, wr, &len16); | |
725 | else | |
726 | err = -ENOMEM; | |
727 | if (err) { | |
728 | *bad_wr = wr; | |
729 | break; | |
730 | } | |
731 | ||
732 | qhp->wq.rq.sw_rq[qhp->wq.rq.pidx].wr_id = wr->wr_id; | |
733 | ||
734 | wqe->recv.opcode = FW_RI_RECV_WR; | |
735 | wqe->recv.r1 = 0; | |
736 | wqe->recv.wrid = qhp->wq.rq.pidx; | |
737 | wqe->recv.r2[0] = 0; | |
738 | wqe->recv.r2[1] = 0; | |
739 | wqe->recv.r2[2] = 0; | |
740 | wqe->recv.len16 = len16; | |
cfdda9d7 SW |
741 | PDBG("%s cookie 0x%llx pidx %u\n", __func__, |
742 | (unsigned long long) wr->wr_id, qhp->wq.rq.pidx); | |
d37ac31d SW |
743 | t4_rq_produce(&qhp->wq, len16); |
744 | idx += DIV_ROUND_UP(len16*16, T4_EQ_ENTRY_SIZE); | |
cfdda9d7 SW |
745 | wr = wr->next; |
746 | num_wrs--; | |
cfdda9d7 SW |
747 | } |
748 | if (t4_wq_db_enabled(&qhp->wq)) | |
749 | t4_ring_rq_db(&qhp->wq, idx); | |
750 | spin_unlock_irqrestore(&qhp->lock, flag); | |
751 | return err; | |
752 | } | |
753 | ||
754 | int c4iw_bind_mw(struct ib_qp *qp, struct ib_mw *mw, struct ib_mw_bind *mw_bind) | |
755 | { | |
756 | return -ENOSYS; | |
757 | } | |
758 | ||
759 | static inline void build_term_codes(struct t4_cqe *err_cqe, u8 *layer_type, | |
760 | u8 *ecode) | |
761 | { | |
762 | int status; | |
763 | int tagged; | |
764 | int opcode; | |
765 | int rqtype; | |
766 | int send_inv; | |
767 | ||
768 | if (!err_cqe) { | |
769 | *layer_type = LAYER_RDMAP|DDP_LOCAL_CATA; | |
770 | *ecode = 0; | |
771 | return; | |
772 | } | |
773 | ||
774 | status = CQE_STATUS(err_cqe); | |
775 | opcode = CQE_OPCODE(err_cqe); | |
776 | rqtype = RQ_TYPE(err_cqe); | |
777 | send_inv = (opcode == FW_RI_SEND_WITH_INV) || | |
778 | (opcode == FW_RI_SEND_WITH_SE_INV); | |
779 | tagged = (opcode == FW_RI_RDMA_WRITE) || | |
780 | (rqtype && (opcode == FW_RI_READ_RESP)); | |
781 | ||
782 | switch (status) { | |
783 | case T4_ERR_STAG: | |
784 | if (send_inv) { | |
785 | *layer_type = LAYER_RDMAP|RDMAP_REMOTE_OP; | |
786 | *ecode = RDMAP_CANT_INV_STAG; | |
787 | } else { | |
788 | *layer_type = LAYER_RDMAP|RDMAP_REMOTE_PROT; | |
789 | *ecode = RDMAP_INV_STAG; | |
790 | } | |
791 | break; | |
792 | case T4_ERR_PDID: | |
793 | *layer_type = LAYER_RDMAP|RDMAP_REMOTE_PROT; | |
794 | if ((opcode == FW_RI_SEND_WITH_INV) || | |
795 | (opcode == FW_RI_SEND_WITH_SE_INV)) | |
796 | *ecode = RDMAP_CANT_INV_STAG; | |
797 | else | |
798 | *ecode = RDMAP_STAG_NOT_ASSOC; | |
799 | break; | |
800 | case T4_ERR_QPID: | |
801 | *layer_type = LAYER_RDMAP|RDMAP_REMOTE_PROT; | |
802 | *ecode = RDMAP_STAG_NOT_ASSOC; | |
803 | break; | |
804 | case T4_ERR_ACCESS: | |
805 | *layer_type = LAYER_RDMAP|RDMAP_REMOTE_PROT; | |
806 | *ecode = RDMAP_ACC_VIOL; | |
807 | break; | |
808 | case T4_ERR_WRAP: | |
809 | *layer_type = LAYER_RDMAP|RDMAP_REMOTE_PROT; | |
810 | *ecode = RDMAP_TO_WRAP; | |
811 | break; | |
812 | case T4_ERR_BOUND: | |
813 | if (tagged) { | |
814 | *layer_type = LAYER_DDP|DDP_TAGGED_ERR; | |
815 | *ecode = DDPT_BASE_BOUNDS; | |
816 | } else { | |
817 | *layer_type = LAYER_RDMAP|RDMAP_REMOTE_PROT; | |
818 | *ecode = RDMAP_BASE_BOUNDS; | |
819 | } | |
820 | break; | |
821 | case T4_ERR_INVALIDATE_SHARED_MR: | |
822 | case T4_ERR_INVALIDATE_MR_WITH_MW_BOUND: | |
823 | *layer_type = LAYER_RDMAP|RDMAP_REMOTE_OP; | |
824 | *ecode = RDMAP_CANT_INV_STAG; | |
825 | break; | |
826 | case T4_ERR_ECC: | |
827 | case T4_ERR_ECC_PSTAG: | |
828 | case T4_ERR_INTERNAL_ERR: | |
829 | *layer_type = LAYER_RDMAP|RDMAP_LOCAL_CATA; | |
830 | *ecode = 0; | |
831 | break; | |
832 | case T4_ERR_OUT_OF_RQE: | |
833 | *layer_type = LAYER_DDP|DDP_UNTAGGED_ERR; | |
834 | *ecode = DDPU_INV_MSN_NOBUF; | |
835 | break; | |
836 | case T4_ERR_PBL_ADDR_BOUND: | |
837 | *layer_type = LAYER_DDP|DDP_TAGGED_ERR; | |
838 | *ecode = DDPT_BASE_BOUNDS; | |
839 | break; | |
840 | case T4_ERR_CRC: | |
841 | *layer_type = LAYER_MPA|DDP_LLP; | |
842 | *ecode = MPA_CRC_ERR; | |
843 | break; | |
844 | case T4_ERR_MARKER: | |
845 | *layer_type = LAYER_MPA|DDP_LLP; | |
846 | *ecode = MPA_MARKER_ERR; | |
847 | break; | |
848 | case T4_ERR_PDU_LEN_ERR: | |
849 | *layer_type = LAYER_DDP|DDP_UNTAGGED_ERR; | |
850 | *ecode = DDPU_MSG_TOOBIG; | |
851 | break; | |
852 | case T4_ERR_DDP_VERSION: | |
853 | if (tagged) { | |
854 | *layer_type = LAYER_DDP|DDP_TAGGED_ERR; | |
855 | *ecode = DDPT_INV_VERS; | |
856 | } else { | |
857 | *layer_type = LAYER_DDP|DDP_UNTAGGED_ERR; | |
858 | *ecode = DDPU_INV_VERS; | |
859 | } | |
860 | break; | |
861 | case T4_ERR_RDMA_VERSION: | |
862 | *layer_type = LAYER_RDMAP|RDMAP_REMOTE_OP; | |
863 | *ecode = RDMAP_INV_VERS; | |
864 | break; | |
865 | case T4_ERR_OPCODE: | |
866 | *layer_type = LAYER_RDMAP|RDMAP_REMOTE_OP; | |
867 | *ecode = RDMAP_INV_OPCODE; | |
868 | break; | |
869 | case T4_ERR_DDP_QUEUE_NUM: | |
870 | *layer_type = LAYER_DDP|DDP_UNTAGGED_ERR; | |
871 | *ecode = DDPU_INV_QN; | |
872 | break; | |
873 | case T4_ERR_MSN: | |
874 | case T4_ERR_MSN_GAP: | |
875 | case T4_ERR_MSN_RANGE: | |
876 | case T4_ERR_IRD_OVERFLOW: | |
877 | *layer_type = LAYER_DDP|DDP_UNTAGGED_ERR; | |
878 | *ecode = DDPU_INV_MSN_RANGE; | |
879 | break; | |
880 | case T4_ERR_TBIT: | |
881 | *layer_type = LAYER_DDP|DDP_LOCAL_CATA; | |
882 | *ecode = 0; | |
883 | break; | |
884 | case T4_ERR_MO: | |
885 | *layer_type = LAYER_DDP|DDP_UNTAGGED_ERR; | |
886 | *ecode = DDPU_INV_MO; | |
887 | break; | |
888 | default: | |
889 | *layer_type = LAYER_RDMAP|DDP_LOCAL_CATA; | |
890 | *ecode = 0; | |
891 | break; | |
892 | } | |
893 | } | |
894 | ||
be4c9bad RD |
895 | static void post_terminate(struct c4iw_qp *qhp, struct t4_cqe *err_cqe, |
896 | gfp_t gfp) | |
cfdda9d7 SW |
897 | { |
898 | struct fw_ri_wr *wqe; | |
899 | struct sk_buff *skb; | |
900 | struct terminate_message *term; | |
901 | ||
902 | PDBG("%s qhp %p qid 0x%x tid %u\n", __func__, qhp, qhp->wq.sq.qid, | |
903 | qhp->ep->hwtid); | |
904 | ||
be4c9bad | 905 | skb = alloc_skb(sizeof *wqe, gfp); |
cfdda9d7 | 906 | if (!skb) |
be4c9bad | 907 | return; |
cfdda9d7 SW |
908 | set_wr_txq(skb, CPL_PRIORITY_DATA, qhp->ep->txq_idx); |
909 | ||
910 | wqe = (struct fw_ri_wr *)__skb_put(skb, sizeof(*wqe)); | |
911 | memset(wqe, 0, sizeof *wqe); | |
912 | wqe->op_compl = cpu_to_be32(FW_WR_OP(FW_RI_INIT_WR)); | |
913 | wqe->flowid_len16 = cpu_to_be32( | |
914 | FW_WR_FLOWID(qhp->ep->hwtid) | | |
915 | FW_WR_LEN16(DIV_ROUND_UP(sizeof *wqe, 16))); | |
916 | ||
917 | wqe->u.terminate.type = FW_RI_TYPE_TERMINATE; | |
918 | wqe->u.terminate.immdlen = cpu_to_be32(sizeof *term); | |
919 | term = (struct terminate_message *)wqe->u.terminate.termmsg; | |
920 | build_term_codes(err_cqe, &term->layer_etype, &term->ecode); | |
be4c9bad | 921 | c4iw_ofld_send(&qhp->rhp->rdev, skb); |
cfdda9d7 SW |
922 | } |
923 | ||
924 | /* | |
925 | * Assumes qhp lock is held. | |
926 | */ | |
927 | static void __flush_qp(struct c4iw_qp *qhp, struct c4iw_cq *rchp, | |
2f5b48c3 | 928 | struct c4iw_cq *schp) |
cfdda9d7 SW |
929 | { |
930 | int count; | |
931 | int flushed; | |
2f5b48c3 | 932 | unsigned long flag; |
cfdda9d7 SW |
933 | |
934 | PDBG("%s qhp %p rchp %p schp %p\n", __func__, qhp, rchp, schp); | |
cfdda9d7 | 935 | |
732bee7a | 936 | /* locking hierarchy: cq lock first, then qp lock. */ |
2f5b48c3 | 937 | spin_lock_irqsave(&rchp->lock, flag); |
cfdda9d7 SW |
938 | spin_lock(&qhp->lock); |
939 | c4iw_flush_hw_cq(&rchp->cq); | |
940 | c4iw_count_rcqes(&rchp->cq, &qhp->wq, &count); | |
941 | flushed = c4iw_flush_rq(&qhp->wq, &rchp->cq, count); | |
942 | spin_unlock(&qhp->lock); | |
2f5b48c3 | 943 | spin_unlock_irqrestore(&rchp->lock, flag); |
cfdda9d7 SW |
944 | if (flushed) |
945 | (*rchp->ibcq.comp_handler)(&rchp->ibcq, rchp->ibcq.cq_context); | |
946 | ||
732bee7a | 947 | /* locking hierarchy: cq lock first, then qp lock. */ |
2f5b48c3 | 948 | spin_lock_irqsave(&schp->lock, flag); |
cfdda9d7 SW |
949 | spin_lock(&qhp->lock); |
950 | c4iw_flush_hw_cq(&schp->cq); | |
951 | c4iw_count_scqes(&schp->cq, &qhp->wq, &count); | |
952 | flushed = c4iw_flush_sq(&qhp->wq, &schp->cq, count); | |
953 | spin_unlock(&qhp->lock); | |
2f5b48c3 | 954 | spin_unlock_irqrestore(&schp->lock, flag); |
cfdda9d7 SW |
955 | if (flushed) |
956 | (*schp->ibcq.comp_handler)(&schp->ibcq, schp->ibcq.cq_context); | |
cfdda9d7 SW |
957 | } |
958 | ||
2f5b48c3 | 959 | static void flush_qp(struct c4iw_qp *qhp) |
cfdda9d7 SW |
960 | { |
961 | struct c4iw_cq *rchp, *schp; | |
962 | ||
963 | rchp = get_chp(qhp->rhp, qhp->attr.rcq); | |
964 | schp = get_chp(qhp->rhp, qhp->attr.scq); | |
965 | ||
966 | if (qhp->ibqp.uobject) { | |
967 | t4_set_wq_in_error(&qhp->wq); | |
968 | t4_set_cq_in_error(&rchp->cq); | |
969 | if (schp != rchp) | |
970 | t4_set_cq_in_error(&schp->cq); | |
971 | return; | |
972 | } | |
2f5b48c3 | 973 | __flush_qp(qhp, rchp, schp); |
cfdda9d7 SW |
974 | } |
975 | ||
73d6fcad SW |
976 | static int rdma_fini(struct c4iw_dev *rhp, struct c4iw_qp *qhp, |
977 | struct c4iw_ep *ep) | |
cfdda9d7 SW |
978 | { |
979 | struct fw_ri_wr *wqe; | |
980 | int ret; | |
cfdda9d7 SW |
981 | struct sk_buff *skb; |
982 | ||
983 | PDBG("%s qhp %p qid 0x%x tid %u\n", __func__, qhp, qhp->wq.sq.qid, | |
73d6fcad | 984 | ep->hwtid); |
cfdda9d7 | 985 | |
d3c814e8 | 986 | skb = alloc_skb(sizeof *wqe, GFP_KERNEL); |
cfdda9d7 SW |
987 | if (!skb) |
988 | return -ENOMEM; | |
73d6fcad | 989 | set_wr_txq(skb, CPL_PRIORITY_DATA, ep->txq_idx); |
cfdda9d7 SW |
990 | |
991 | wqe = (struct fw_ri_wr *)__skb_put(skb, sizeof(*wqe)); | |
992 | memset(wqe, 0, sizeof *wqe); | |
993 | wqe->op_compl = cpu_to_be32( | |
994 | FW_WR_OP(FW_RI_INIT_WR) | | |
995 | FW_WR_COMPL(1)); | |
996 | wqe->flowid_len16 = cpu_to_be32( | |
73d6fcad | 997 | FW_WR_FLOWID(ep->hwtid) | |
cfdda9d7 | 998 | FW_WR_LEN16(DIV_ROUND_UP(sizeof *wqe, 16))); |
2f5b48c3 | 999 | wqe->cookie = (unsigned long) &ep->com.wr_wait; |
cfdda9d7 SW |
1000 | |
1001 | wqe->u.fini.type = FW_RI_TYPE_FINI; | |
cfdda9d7 SW |
1002 | ret = c4iw_ofld_send(&rhp->rdev, skb); |
1003 | if (ret) | |
1004 | goto out; | |
1005 | ||
2f5b48c3 | 1006 | ret = c4iw_wait_for_reply(&rhp->rdev, &ep->com.wr_wait, qhp->ep->hwtid, |
aadc4df3 | 1007 | qhp->wq.sq.qid, __func__); |
cfdda9d7 SW |
1008 | out: |
1009 | PDBG("%s ret %d\n", __func__, ret); | |
1010 | return ret; | |
1011 | } | |
1012 | ||
1013 | static void build_rtr_msg(u8 p2p_type, struct fw_ri_init *init) | |
1014 | { | |
1015 | memset(&init->u, 0, sizeof init->u); | |
1016 | switch (p2p_type) { | |
1017 | case FW_RI_INIT_P2PTYPE_RDMA_WRITE: | |
1018 | init->u.write.opcode = FW_RI_RDMA_WRITE_WR; | |
1019 | init->u.write.stag_sink = cpu_to_be32(1); | |
1020 | init->u.write.to_sink = cpu_to_be64(1); | |
1021 | init->u.write.u.immd_src[0].op = FW_RI_DATA_IMMD; | |
1022 | init->u.write.len16 = DIV_ROUND_UP(sizeof init->u.write + | |
1023 | sizeof(struct fw_ri_immd), | |
1024 | 16); | |
1025 | break; | |
1026 | case FW_RI_INIT_P2PTYPE_READ_REQ: | |
1027 | init->u.write.opcode = FW_RI_RDMA_READ_WR; | |
1028 | init->u.read.stag_src = cpu_to_be32(1); | |
1029 | init->u.read.to_src_lo = cpu_to_be32(1); | |
1030 | init->u.read.stag_sink = cpu_to_be32(1); | |
1031 | init->u.read.to_sink_lo = cpu_to_be32(1); | |
1032 | init->u.read.len16 = DIV_ROUND_UP(sizeof init->u.read, 16); | |
1033 | break; | |
1034 | } | |
1035 | } | |
1036 | ||
1037 | static int rdma_init(struct c4iw_dev *rhp, struct c4iw_qp *qhp) | |
1038 | { | |
1039 | struct fw_ri_wr *wqe; | |
1040 | int ret; | |
cfdda9d7 SW |
1041 | struct sk_buff *skb; |
1042 | ||
1043 | PDBG("%s qhp %p qid 0x%x tid %u\n", __func__, qhp, qhp->wq.sq.qid, | |
1044 | qhp->ep->hwtid); | |
1045 | ||
d3c814e8 | 1046 | skb = alloc_skb(sizeof *wqe, GFP_KERNEL); |
cfdda9d7 SW |
1047 | if (!skb) |
1048 | return -ENOMEM; | |
1049 | set_wr_txq(skb, CPL_PRIORITY_DATA, qhp->ep->txq_idx); | |
1050 | ||
1051 | wqe = (struct fw_ri_wr *)__skb_put(skb, sizeof(*wqe)); | |
1052 | memset(wqe, 0, sizeof *wqe); | |
1053 | wqe->op_compl = cpu_to_be32( | |
1054 | FW_WR_OP(FW_RI_INIT_WR) | | |
1055 | FW_WR_COMPL(1)); | |
1056 | wqe->flowid_len16 = cpu_to_be32( | |
1057 | FW_WR_FLOWID(qhp->ep->hwtid) | | |
1058 | FW_WR_LEN16(DIV_ROUND_UP(sizeof *wqe, 16))); | |
1059 | ||
2f5b48c3 | 1060 | wqe->cookie = (unsigned long) &qhp->ep->com.wr_wait; |
cfdda9d7 SW |
1061 | |
1062 | wqe->u.init.type = FW_RI_TYPE_INIT; | |
1063 | wqe->u.init.mpareqbit_p2ptype = | |
1064 | V_FW_RI_WR_MPAREQBIT(qhp->attr.mpa_attr.initiator) | | |
1065 | V_FW_RI_WR_P2PTYPE(qhp->attr.mpa_attr.p2p_type); | |
1066 | wqe->u.init.mpa_attrs = FW_RI_MPA_IETF_ENABLE; | |
1067 | if (qhp->attr.mpa_attr.recv_marker_enabled) | |
1068 | wqe->u.init.mpa_attrs |= FW_RI_MPA_RX_MARKER_ENABLE; | |
1069 | if (qhp->attr.mpa_attr.xmit_marker_enabled) | |
1070 | wqe->u.init.mpa_attrs |= FW_RI_MPA_TX_MARKER_ENABLE; | |
1071 | if (qhp->attr.mpa_attr.crc_enabled) | |
1072 | wqe->u.init.mpa_attrs |= FW_RI_MPA_CRC_ENABLE; | |
1073 | ||
1074 | wqe->u.init.qp_caps = FW_RI_QP_RDMA_READ_ENABLE | | |
1075 | FW_RI_QP_RDMA_WRITE_ENABLE | | |
1076 | FW_RI_QP_BIND_ENABLE; | |
1077 | if (!qhp->ibqp.uobject) | |
1078 | wqe->u.init.qp_caps |= FW_RI_QP_FAST_REGISTER_ENABLE | | |
1079 | FW_RI_QP_STAG0_ENABLE; | |
1080 | wqe->u.init.nrqe = cpu_to_be16(t4_rqes_posted(&qhp->wq)); | |
1081 | wqe->u.init.pdid = cpu_to_be32(qhp->attr.pd); | |
1082 | wqe->u.init.qpid = cpu_to_be32(qhp->wq.sq.qid); | |
1083 | wqe->u.init.sq_eqid = cpu_to_be32(qhp->wq.sq.qid); | |
1084 | wqe->u.init.rq_eqid = cpu_to_be32(qhp->wq.rq.qid); | |
1085 | wqe->u.init.scqid = cpu_to_be32(qhp->attr.scq); | |
1086 | wqe->u.init.rcqid = cpu_to_be32(qhp->attr.rcq); | |
1087 | wqe->u.init.ord_max = cpu_to_be32(qhp->attr.max_ord); | |
1088 | wqe->u.init.ird_max = cpu_to_be32(qhp->attr.max_ird); | |
1089 | wqe->u.init.iss = cpu_to_be32(qhp->ep->snd_seq); | |
1090 | wqe->u.init.irs = cpu_to_be32(qhp->ep->rcv_seq); | |
1091 | wqe->u.init.hwrqsize = cpu_to_be32(qhp->wq.rq.rqt_size); | |
1092 | wqe->u.init.hwrqaddr = cpu_to_be32(qhp->wq.rq.rqt_hwaddr - | |
1093 | rhp->rdev.lldi.vr->rq.start); | |
1094 | if (qhp->attr.mpa_attr.initiator) | |
1095 | build_rtr_msg(qhp->attr.mpa_attr.p2p_type, &wqe->u.init); | |
1096 | ||
cfdda9d7 SW |
1097 | ret = c4iw_ofld_send(&rhp->rdev, skb); |
1098 | if (ret) | |
1099 | goto out; | |
1100 | ||
2f5b48c3 SW |
1101 | ret = c4iw_wait_for_reply(&rhp->rdev, &qhp->ep->com.wr_wait, |
1102 | qhp->ep->hwtid, qhp->wq.sq.qid, __func__); | |
cfdda9d7 SW |
1103 | out: |
1104 | PDBG("%s ret %d\n", __func__, ret); | |
1105 | return ret; | |
1106 | } | |
1107 | ||
1108 | int c4iw_modify_qp(struct c4iw_dev *rhp, struct c4iw_qp *qhp, | |
1109 | enum c4iw_qp_attr_mask mask, | |
1110 | struct c4iw_qp_attributes *attrs, | |
1111 | int internal) | |
1112 | { | |
1113 | int ret = 0; | |
1114 | struct c4iw_qp_attributes newattr = qhp->attr; | |
cfdda9d7 SW |
1115 | int disconnect = 0; |
1116 | int terminate = 0; | |
1117 | int abort = 0; | |
1118 | int free = 0; | |
1119 | struct c4iw_ep *ep = NULL; | |
1120 | ||
1121 | PDBG("%s qhp %p sqid 0x%x rqid 0x%x ep %p state %d -> %d\n", __func__, | |
1122 | qhp, qhp->wq.sq.qid, qhp->wq.rq.qid, qhp->ep, qhp->attr.state, | |
1123 | (mask & C4IW_QP_ATTR_NEXT_STATE) ? attrs->next_state : -1); | |
1124 | ||
2f5b48c3 | 1125 | mutex_lock(&qhp->mutex); |
cfdda9d7 SW |
1126 | |
1127 | /* Process attr changes if in IDLE */ | |
1128 | if (mask & C4IW_QP_ATTR_VALID_MODIFY) { | |
1129 | if (qhp->attr.state != C4IW_QP_STATE_IDLE) { | |
1130 | ret = -EIO; | |
1131 | goto out; | |
1132 | } | |
1133 | if (mask & C4IW_QP_ATTR_ENABLE_RDMA_READ) | |
1134 | newattr.enable_rdma_read = attrs->enable_rdma_read; | |
1135 | if (mask & C4IW_QP_ATTR_ENABLE_RDMA_WRITE) | |
1136 | newattr.enable_rdma_write = attrs->enable_rdma_write; | |
1137 | if (mask & C4IW_QP_ATTR_ENABLE_RDMA_BIND) | |
1138 | newattr.enable_bind = attrs->enable_bind; | |
1139 | if (mask & C4IW_QP_ATTR_MAX_ORD) { | |
be4c9bad | 1140 | if (attrs->max_ord > c4iw_max_read_depth) { |
cfdda9d7 SW |
1141 | ret = -EINVAL; |
1142 | goto out; | |
1143 | } | |
1144 | newattr.max_ord = attrs->max_ord; | |
1145 | } | |
1146 | if (mask & C4IW_QP_ATTR_MAX_IRD) { | |
be4c9bad | 1147 | if (attrs->max_ird > c4iw_max_read_depth) { |
cfdda9d7 SW |
1148 | ret = -EINVAL; |
1149 | goto out; | |
1150 | } | |
1151 | newattr.max_ird = attrs->max_ird; | |
1152 | } | |
1153 | qhp->attr = newattr; | |
1154 | } | |
1155 | ||
1156 | if (!(mask & C4IW_QP_ATTR_NEXT_STATE)) | |
1157 | goto out; | |
1158 | if (qhp->attr.state == attrs->next_state) | |
1159 | goto out; | |
1160 | ||
1161 | switch (qhp->attr.state) { | |
1162 | case C4IW_QP_STATE_IDLE: | |
1163 | switch (attrs->next_state) { | |
1164 | case C4IW_QP_STATE_RTS: | |
1165 | if (!(mask & C4IW_QP_ATTR_LLP_STREAM_HANDLE)) { | |
1166 | ret = -EINVAL; | |
1167 | goto out; | |
1168 | } | |
1169 | if (!(mask & C4IW_QP_ATTR_MPA_ATTR)) { | |
1170 | ret = -EINVAL; | |
1171 | goto out; | |
1172 | } | |
1173 | qhp->attr.mpa_attr = attrs->mpa_attr; | |
1174 | qhp->attr.llp_stream_handle = attrs->llp_stream_handle; | |
1175 | qhp->ep = qhp->attr.llp_stream_handle; | |
2f5b48c3 | 1176 | set_state(qhp, C4IW_QP_STATE_RTS); |
cfdda9d7 SW |
1177 | |
1178 | /* | |
1179 | * Ref the endpoint here and deref when we | |
1180 | * disassociate the endpoint from the QP. This | |
1181 | * happens in CLOSING->IDLE transition or *->ERROR | |
1182 | * transition. | |
1183 | */ | |
1184 | c4iw_get_ep(&qhp->ep->com); | |
cfdda9d7 | 1185 | ret = rdma_init(rhp, qhp); |
cfdda9d7 SW |
1186 | if (ret) |
1187 | goto err; | |
1188 | break; | |
1189 | case C4IW_QP_STATE_ERROR: | |
2f5b48c3 SW |
1190 | set_state(qhp, C4IW_QP_STATE_ERROR); |
1191 | flush_qp(qhp); | |
cfdda9d7 SW |
1192 | break; |
1193 | default: | |
1194 | ret = -EINVAL; | |
1195 | goto out; | |
1196 | } | |
1197 | break; | |
1198 | case C4IW_QP_STATE_RTS: | |
1199 | switch (attrs->next_state) { | |
1200 | case C4IW_QP_STATE_CLOSING: | |
1201 | BUG_ON(atomic_read(&qhp->ep->com.kref.refcount) < 2); | |
2f5b48c3 | 1202 | set_state(qhp, C4IW_QP_STATE_CLOSING); |
73d6fcad | 1203 | ep = qhp->ep; |
cfdda9d7 SW |
1204 | if (!internal) { |
1205 | abort = 0; | |
1206 | disconnect = 1; | |
2f5b48c3 | 1207 | c4iw_get_ep(&qhp->ep->com); |
cfdda9d7 | 1208 | } |
73d6fcad | 1209 | ret = rdma_fini(rhp, qhp, ep); |
cfdda9d7 | 1210 | if (ret) { |
2f5b48c3 SW |
1211 | if (internal) |
1212 | c4iw_get_ep(&qhp->ep->com); | |
cfdda9d7 SW |
1213 | goto err; |
1214 | } | |
1215 | break; | |
1216 | case C4IW_QP_STATE_TERMINATE: | |
2f5b48c3 | 1217 | set_state(qhp, C4IW_QP_STATE_TERMINATE); |
cfdda9d7 SW |
1218 | if (qhp->ibqp.uobject) |
1219 | t4_set_wq_in_error(&qhp->wq); | |
be4c9bad | 1220 | ep = qhp->ep; |
0e42c1f4 SW |
1221 | if (!internal) |
1222 | terminate = 1; | |
be4c9bad | 1223 | disconnect = 1; |
2f5b48c3 | 1224 | c4iw_get_ep(&qhp->ep->com); |
cfdda9d7 SW |
1225 | break; |
1226 | case C4IW_QP_STATE_ERROR: | |
2f5b48c3 | 1227 | set_state(qhp, C4IW_QP_STATE_ERROR); |
cfdda9d7 SW |
1228 | if (!internal) { |
1229 | abort = 1; | |
1230 | disconnect = 1; | |
1231 | ep = qhp->ep; | |
2f5b48c3 | 1232 | c4iw_get_ep(&qhp->ep->com); |
cfdda9d7 SW |
1233 | } |
1234 | goto err; | |
1235 | break; | |
1236 | default: | |
1237 | ret = -EINVAL; | |
1238 | goto out; | |
1239 | } | |
1240 | break; | |
1241 | case C4IW_QP_STATE_CLOSING: | |
1242 | if (!internal) { | |
1243 | ret = -EINVAL; | |
1244 | goto out; | |
1245 | } | |
1246 | switch (attrs->next_state) { | |
1247 | case C4IW_QP_STATE_IDLE: | |
2f5b48c3 SW |
1248 | flush_qp(qhp); |
1249 | set_state(qhp, C4IW_QP_STATE_IDLE); | |
cfdda9d7 SW |
1250 | qhp->attr.llp_stream_handle = NULL; |
1251 | c4iw_put_ep(&qhp->ep->com); | |
1252 | qhp->ep = NULL; | |
1253 | wake_up(&qhp->wait); | |
1254 | break; | |
1255 | case C4IW_QP_STATE_ERROR: | |
1256 | goto err; | |
1257 | default: | |
1258 | ret = -EINVAL; | |
1259 | goto err; | |
1260 | } | |
1261 | break; | |
1262 | case C4IW_QP_STATE_ERROR: | |
1263 | if (attrs->next_state != C4IW_QP_STATE_IDLE) { | |
1264 | ret = -EINVAL; | |
1265 | goto out; | |
1266 | } | |
1267 | if (!t4_sq_empty(&qhp->wq) || !t4_rq_empty(&qhp->wq)) { | |
1268 | ret = -EINVAL; | |
1269 | goto out; | |
1270 | } | |
2f5b48c3 | 1271 | set_state(qhp, C4IW_QP_STATE_IDLE); |
cfdda9d7 SW |
1272 | break; |
1273 | case C4IW_QP_STATE_TERMINATE: | |
1274 | if (!internal) { | |
1275 | ret = -EINVAL; | |
1276 | goto out; | |
1277 | } | |
1278 | goto err; | |
1279 | break; | |
1280 | default: | |
1281 | printk(KERN_ERR "%s in a bad state %d\n", | |
1282 | __func__, qhp->attr.state); | |
1283 | ret = -EINVAL; | |
1284 | goto err; | |
1285 | break; | |
1286 | } | |
1287 | goto out; | |
1288 | err: | |
1289 | PDBG("%s disassociating ep %p qpid 0x%x\n", __func__, qhp->ep, | |
1290 | qhp->wq.sq.qid); | |
1291 | ||
1292 | /* disassociate the LLP connection */ | |
1293 | qhp->attr.llp_stream_handle = NULL; | |
af93fb5d SW |
1294 | if (!ep) |
1295 | ep = qhp->ep; | |
cfdda9d7 | 1296 | qhp->ep = NULL; |
2f5b48c3 | 1297 | set_state(qhp, C4IW_QP_STATE_ERROR); |
cfdda9d7 SW |
1298 | free = 1; |
1299 | wake_up(&qhp->wait); | |
1300 | BUG_ON(!ep); | |
2f5b48c3 | 1301 | flush_qp(qhp); |
cfdda9d7 | 1302 | out: |
2f5b48c3 | 1303 | mutex_unlock(&qhp->mutex); |
cfdda9d7 SW |
1304 | |
1305 | if (terminate) | |
be4c9bad | 1306 | post_terminate(qhp, NULL, internal ? GFP_ATOMIC : GFP_KERNEL); |
cfdda9d7 SW |
1307 | |
1308 | /* | |
1309 | * If disconnect is 1, then we need to initiate a disconnect | |
1310 | * on the EP. This can be a normal close (RTS->CLOSING) or | |
1311 | * an abnormal close (RTS/CLOSING->ERROR). | |
1312 | */ | |
1313 | if (disconnect) { | |
be4c9bad RD |
1314 | c4iw_ep_disconnect(ep, abort, internal ? GFP_ATOMIC : |
1315 | GFP_KERNEL); | |
cfdda9d7 SW |
1316 | c4iw_put_ep(&ep->com); |
1317 | } | |
1318 | ||
1319 | /* | |
1320 | * If free is 1, then we've disassociated the EP from the QP | |
1321 | * and we need to dereference the EP. | |
1322 | */ | |
1323 | if (free) | |
1324 | c4iw_put_ep(&ep->com); | |
cfdda9d7 SW |
1325 | PDBG("%s exit state %d\n", __func__, qhp->attr.state); |
1326 | return ret; | |
1327 | } | |
1328 | ||
1329 | int c4iw_destroy_qp(struct ib_qp *ib_qp) | |
1330 | { | |
1331 | struct c4iw_dev *rhp; | |
1332 | struct c4iw_qp *qhp; | |
1333 | struct c4iw_qp_attributes attrs; | |
1334 | struct c4iw_ucontext *ucontext; | |
1335 | ||
1336 | qhp = to_c4iw_qp(ib_qp); | |
1337 | rhp = qhp->rhp; | |
1338 | ||
1339 | attrs.next_state = C4IW_QP_STATE_ERROR; | |
1340 | c4iw_modify_qp(rhp, qhp, C4IW_QP_ATTR_NEXT_STATE, &attrs, 0); | |
1341 | wait_event(qhp->wait, !qhp->ep); | |
1342 | ||
1343 | remove_handle(rhp, &rhp->qpidr, qhp->wq.sq.qid); | |
cfdda9d7 SW |
1344 | atomic_dec(&qhp->refcnt); |
1345 | wait_event(qhp->wait, !atomic_read(&qhp->refcnt)); | |
1346 | ||
1347 | ucontext = ib_qp->uobject ? | |
1348 | to_c4iw_ucontext(ib_qp->uobject->context) : NULL; | |
1349 | destroy_qp(&rhp->rdev, &qhp->wq, | |
1350 | ucontext ? &ucontext->uctx : &rhp->rdev.uctx); | |
1351 | ||
1352 | PDBG("%s ib_qp %p qpid 0x%0x\n", __func__, ib_qp, qhp->wq.sq.qid); | |
1353 | kfree(qhp); | |
1354 | return 0; | |
1355 | } | |
1356 | ||
1357 | struct ib_qp *c4iw_create_qp(struct ib_pd *pd, struct ib_qp_init_attr *attrs, | |
1358 | struct ib_udata *udata) | |
1359 | { | |
1360 | struct c4iw_dev *rhp; | |
1361 | struct c4iw_qp *qhp; | |
1362 | struct c4iw_pd *php; | |
1363 | struct c4iw_cq *schp; | |
1364 | struct c4iw_cq *rchp; | |
1365 | struct c4iw_create_qp_resp uresp; | |
1366 | int sqsize, rqsize; | |
1367 | struct c4iw_ucontext *ucontext; | |
1368 | int ret; | |
c6d7b267 | 1369 | struct c4iw_mm_entry *mm1, *mm2, *mm3, *mm4, *mm5 = NULL; |
cfdda9d7 SW |
1370 | |
1371 | PDBG("%s ib_pd %p\n", __func__, pd); | |
1372 | ||
1373 | if (attrs->qp_type != IB_QPT_RC) | |
1374 | return ERR_PTR(-EINVAL); | |
1375 | ||
1376 | php = to_c4iw_pd(pd); | |
1377 | rhp = php->rhp; | |
1378 | schp = get_chp(rhp, ((struct c4iw_cq *)attrs->send_cq)->cq.cqid); | |
1379 | rchp = get_chp(rhp, ((struct c4iw_cq *)attrs->recv_cq)->cq.cqid); | |
1380 | if (!schp || !rchp) | |
1381 | return ERR_PTR(-EINVAL); | |
1382 | ||
1383 | if (attrs->cap.max_inline_data > T4_MAX_SEND_INLINE) | |
1384 | return ERR_PTR(-EINVAL); | |
1385 | ||
1386 | rqsize = roundup(attrs->cap.max_recv_wr + 1, 16); | |
1387 | if (rqsize > T4_MAX_RQ_SIZE) | |
1388 | return ERR_PTR(-E2BIG); | |
1389 | ||
1390 | sqsize = roundup(attrs->cap.max_send_wr + 1, 16); | |
1391 | if (sqsize > T4_MAX_SQ_SIZE) | |
1392 | return ERR_PTR(-E2BIG); | |
1393 | ||
1394 | ucontext = pd->uobject ? to_c4iw_ucontext(pd->uobject->context) : NULL; | |
1395 | ||
1396 | ||
1397 | qhp = kzalloc(sizeof(*qhp), GFP_KERNEL); | |
1398 | if (!qhp) | |
1399 | return ERR_PTR(-ENOMEM); | |
1400 | qhp->wq.sq.size = sqsize; | |
1401 | qhp->wq.sq.memsize = (sqsize + 1) * sizeof *qhp->wq.sq.queue; | |
1402 | qhp->wq.rq.size = rqsize; | |
1403 | qhp->wq.rq.memsize = (rqsize + 1) * sizeof *qhp->wq.rq.queue; | |
1404 | ||
1405 | if (ucontext) { | |
1406 | qhp->wq.sq.memsize = roundup(qhp->wq.sq.memsize, PAGE_SIZE); | |
1407 | qhp->wq.rq.memsize = roundup(qhp->wq.rq.memsize, PAGE_SIZE); | |
1408 | } | |
1409 | ||
1410 | PDBG("%s sqsize %u sqmemsize %zu rqsize %u rqmemsize %zu\n", | |
1411 | __func__, sqsize, qhp->wq.sq.memsize, rqsize, qhp->wq.rq.memsize); | |
1412 | ||
1413 | ret = create_qp(&rhp->rdev, &qhp->wq, &schp->cq, &rchp->cq, | |
1414 | ucontext ? &ucontext->uctx : &rhp->rdev.uctx); | |
1415 | if (ret) | |
1416 | goto err1; | |
1417 | ||
1418 | attrs->cap.max_recv_wr = rqsize - 1; | |
1419 | attrs->cap.max_send_wr = sqsize - 1; | |
1420 | attrs->cap.max_inline_data = T4_MAX_SEND_INLINE; | |
1421 | ||
1422 | qhp->rhp = rhp; | |
1423 | qhp->attr.pd = php->pdid; | |
1424 | qhp->attr.scq = ((struct c4iw_cq *) attrs->send_cq)->cq.cqid; | |
1425 | qhp->attr.rcq = ((struct c4iw_cq *) attrs->recv_cq)->cq.cqid; | |
1426 | qhp->attr.sq_num_entries = attrs->cap.max_send_wr; | |
1427 | qhp->attr.rq_num_entries = attrs->cap.max_recv_wr; | |
1428 | qhp->attr.sq_max_sges = attrs->cap.max_send_sge; | |
1429 | qhp->attr.sq_max_sges_rdma_write = attrs->cap.max_send_sge; | |
1430 | qhp->attr.rq_max_sges = attrs->cap.max_recv_sge; | |
1431 | qhp->attr.state = C4IW_QP_STATE_IDLE; | |
1432 | qhp->attr.next_state = C4IW_QP_STATE_IDLE; | |
1433 | qhp->attr.enable_rdma_read = 1; | |
1434 | qhp->attr.enable_rdma_write = 1; | |
1435 | qhp->attr.enable_bind = 1; | |
1436 | qhp->attr.max_ord = 1; | |
1437 | qhp->attr.max_ird = 1; | |
1438 | spin_lock_init(&qhp->lock); | |
2f5b48c3 | 1439 | mutex_init(&qhp->mutex); |
cfdda9d7 SW |
1440 | init_waitqueue_head(&qhp->wait); |
1441 | atomic_set(&qhp->refcnt, 1); | |
1442 | ||
1443 | ret = insert_handle(rhp, &rhp->qpidr, qhp, qhp->wq.sq.qid); | |
1444 | if (ret) | |
1445 | goto err2; | |
1446 | ||
cfdda9d7 SW |
1447 | if (udata) { |
1448 | mm1 = kmalloc(sizeof *mm1, GFP_KERNEL); | |
1449 | if (!mm1) { | |
1450 | ret = -ENOMEM; | |
30a6a62f | 1451 | goto err3; |
cfdda9d7 SW |
1452 | } |
1453 | mm2 = kmalloc(sizeof *mm2, GFP_KERNEL); | |
1454 | if (!mm2) { | |
1455 | ret = -ENOMEM; | |
30a6a62f | 1456 | goto err4; |
cfdda9d7 SW |
1457 | } |
1458 | mm3 = kmalloc(sizeof *mm3, GFP_KERNEL); | |
1459 | if (!mm3) { | |
1460 | ret = -ENOMEM; | |
30a6a62f | 1461 | goto err5; |
cfdda9d7 SW |
1462 | } |
1463 | mm4 = kmalloc(sizeof *mm4, GFP_KERNEL); | |
1464 | if (!mm4) { | |
1465 | ret = -ENOMEM; | |
30a6a62f | 1466 | goto err6; |
cfdda9d7 | 1467 | } |
c6d7b267 SW |
1468 | if (t4_sq_onchip(&qhp->wq.sq)) { |
1469 | mm5 = kmalloc(sizeof *mm5, GFP_KERNEL); | |
1470 | if (!mm5) { | |
1471 | ret = -ENOMEM; | |
1472 | goto err7; | |
1473 | } | |
1474 | uresp.flags = C4IW_QPF_ONCHIP; | |
1475 | } else | |
1476 | uresp.flags = 0; | |
cfdda9d7 SW |
1477 | uresp.qid_mask = rhp->rdev.qpmask; |
1478 | uresp.sqid = qhp->wq.sq.qid; | |
1479 | uresp.sq_size = qhp->wq.sq.size; | |
1480 | uresp.sq_memsize = qhp->wq.sq.memsize; | |
1481 | uresp.rqid = qhp->wq.rq.qid; | |
1482 | uresp.rq_size = qhp->wq.rq.size; | |
1483 | uresp.rq_memsize = qhp->wq.rq.memsize; | |
1484 | spin_lock(&ucontext->mmap_lock); | |
c6d7b267 SW |
1485 | if (mm5) { |
1486 | uresp.ma_sync_key = ucontext->key; | |
1487 | ucontext->key += PAGE_SIZE; | |
1488 | } | |
cfdda9d7 SW |
1489 | uresp.sq_key = ucontext->key; |
1490 | ucontext->key += PAGE_SIZE; | |
1491 | uresp.rq_key = ucontext->key; | |
1492 | ucontext->key += PAGE_SIZE; | |
1493 | uresp.sq_db_gts_key = ucontext->key; | |
1494 | ucontext->key += PAGE_SIZE; | |
1495 | uresp.rq_db_gts_key = ucontext->key; | |
1496 | ucontext->key += PAGE_SIZE; | |
1497 | spin_unlock(&ucontext->mmap_lock); | |
1498 | ret = ib_copy_to_udata(udata, &uresp, sizeof uresp); | |
1499 | if (ret) | |
c6d7b267 | 1500 | goto err8; |
cfdda9d7 | 1501 | mm1->key = uresp.sq_key; |
c6d7b267 | 1502 | mm1->addr = qhp->wq.sq.phys_addr; |
cfdda9d7 SW |
1503 | mm1->len = PAGE_ALIGN(qhp->wq.sq.memsize); |
1504 | insert_mmap(ucontext, mm1); | |
1505 | mm2->key = uresp.rq_key; | |
1506 | mm2->addr = virt_to_phys(qhp->wq.rq.queue); | |
1507 | mm2->len = PAGE_ALIGN(qhp->wq.rq.memsize); | |
1508 | insert_mmap(ucontext, mm2); | |
1509 | mm3->key = uresp.sq_db_gts_key; | |
1510 | mm3->addr = qhp->wq.sq.udb; | |
1511 | mm3->len = PAGE_SIZE; | |
1512 | insert_mmap(ucontext, mm3); | |
1513 | mm4->key = uresp.rq_db_gts_key; | |
1514 | mm4->addr = qhp->wq.rq.udb; | |
1515 | mm4->len = PAGE_SIZE; | |
1516 | insert_mmap(ucontext, mm4); | |
c6d7b267 SW |
1517 | if (mm5) { |
1518 | mm5->key = uresp.ma_sync_key; | |
1519 | mm5->addr = (pci_resource_start(rhp->rdev.lldi.pdev, 0) | |
1520 | + A_PCIE_MA_SYNC) & PAGE_MASK; | |
1521 | mm5->len = PAGE_SIZE; | |
1522 | insert_mmap(ucontext, mm5); | |
1523 | } | |
cfdda9d7 SW |
1524 | } |
1525 | qhp->ibqp.qp_num = qhp->wq.sq.qid; | |
1526 | init_timer(&(qhp->timer)); | |
1527 | PDBG("%s qhp %p sq_num_entries %d, rq_num_entries %d qpid 0x%0x\n", | |
1528 | __func__, qhp, qhp->attr.sq_num_entries, qhp->attr.rq_num_entries, | |
1529 | qhp->wq.sq.qid); | |
1530 | return &qhp->ibqp; | |
c6d7b267 SW |
1531 | err8: |
1532 | kfree(mm5); | |
cfdda9d7 | 1533 | err7: |
30a6a62f | 1534 | kfree(mm4); |
cfdda9d7 | 1535 | err6: |
30a6a62f | 1536 | kfree(mm3); |
cfdda9d7 | 1537 | err5: |
30a6a62f | 1538 | kfree(mm2); |
cfdda9d7 | 1539 | err4: |
30a6a62f | 1540 | kfree(mm1); |
cfdda9d7 SW |
1541 | err3: |
1542 | remove_handle(rhp, &rhp->qpidr, qhp->wq.sq.qid); | |
1543 | err2: | |
1544 | destroy_qp(&rhp->rdev, &qhp->wq, | |
1545 | ucontext ? &ucontext->uctx : &rhp->rdev.uctx); | |
1546 | err1: | |
1547 | kfree(qhp); | |
1548 | return ERR_PTR(ret); | |
1549 | } | |
1550 | ||
1551 | int c4iw_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, | |
1552 | int attr_mask, struct ib_udata *udata) | |
1553 | { | |
1554 | struct c4iw_dev *rhp; | |
1555 | struct c4iw_qp *qhp; | |
1556 | enum c4iw_qp_attr_mask mask = 0; | |
1557 | struct c4iw_qp_attributes attrs; | |
1558 | ||
1559 | PDBG("%s ib_qp %p\n", __func__, ibqp); | |
1560 | ||
1561 | /* iwarp does not support the RTR state */ | |
1562 | if ((attr_mask & IB_QP_STATE) && (attr->qp_state == IB_QPS_RTR)) | |
1563 | attr_mask &= ~IB_QP_STATE; | |
1564 | ||
1565 | /* Make sure we still have something left to do */ | |
1566 | if (!attr_mask) | |
1567 | return 0; | |
1568 | ||
1569 | memset(&attrs, 0, sizeof attrs); | |
1570 | qhp = to_c4iw_qp(ibqp); | |
1571 | rhp = qhp->rhp; | |
1572 | ||
1573 | attrs.next_state = c4iw_convert_state(attr->qp_state); | |
1574 | attrs.enable_rdma_read = (attr->qp_access_flags & | |
1575 | IB_ACCESS_REMOTE_READ) ? 1 : 0; | |
1576 | attrs.enable_rdma_write = (attr->qp_access_flags & | |
1577 | IB_ACCESS_REMOTE_WRITE) ? 1 : 0; | |
1578 | attrs.enable_bind = (attr->qp_access_flags & IB_ACCESS_MW_BIND) ? 1 : 0; | |
1579 | ||
1580 | ||
1581 | mask |= (attr_mask & IB_QP_STATE) ? C4IW_QP_ATTR_NEXT_STATE : 0; | |
1582 | mask |= (attr_mask & IB_QP_ACCESS_FLAGS) ? | |
1583 | (C4IW_QP_ATTR_ENABLE_RDMA_READ | | |
1584 | C4IW_QP_ATTR_ENABLE_RDMA_WRITE | | |
1585 | C4IW_QP_ATTR_ENABLE_RDMA_BIND) : 0; | |
1586 | ||
1587 | return c4iw_modify_qp(rhp, qhp, mask, &attrs, 0); | |
1588 | } | |
1589 | ||
1590 | struct ib_qp *c4iw_get_qp(struct ib_device *dev, int qpn) | |
1591 | { | |
1592 | PDBG("%s ib_dev %p qpn 0x%x\n", __func__, dev, qpn); | |
1593 | return (struct ib_qp *)get_qhp(to_c4iw_dev(dev), qpn); | |
1594 | } |