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authorRoland Dreier <rolandd@cisco.com>2007-05-08 21:00:38 -0400
committerRoland Dreier <rolandd@cisco.com>2007-05-08 21:00:38 -0400
commit225c7b1feef1b41170f7037a5b10a65cd8a42c54 (patch)
tree702a0a2cbba7f1c5b2949d236b4463d486204fdc /drivers/infiniband
parent1bf66a30421ca772820f489d88c16d0c430d6a67 (diff)
IB/mlx4: Add a driver Mellanox ConnectX InfiniBand adapters
Add an InfiniBand driver for Mellanox ConnectX adapters. Because these adapters can also be used as ethernet NICs and Fibre Channel HBAs, the driver is split into two modules: mlx4_core: Handles low-level things like device initialization and processing firmware commands. Also controls resource allocation so that the InfiniBand, ethernet and FC functions can share a device without stepping on each other. mlx4_ib: Handles InfiniBand-specific things; plugs into the InfiniBand midlayer. Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/Kconfig2
-rw-r--r--drivers/infiniband/Makefile1
-rw-r--r--drivers/infiniband/hw/mlx4/Kconfig9
-rw-r--r--drivers/infiniband/hw/mlx4/Makefile3
-rw-r--r--drivers/infiniband/hw/mlx4/ah.c100
-rw-r--r--drivers/infiniband/hw/mlx4/cq.c525
-rw-r--r--drivers/infiniband/hw/mlx4/doorbell.c216
-rw-r--r--drivers/infiniband/hw/mlx4/mad.c339
-rw-r--r--drivers/infiniband/hw/mlx4/main.c651
-rw-r--r--drivers/infiniband/hw/mlx4/mlx4_ib.h285
-rw-r--r--drivers/infiniband/hw/mlx4/mr.c184
-rw-r--r--drivers/infiniband/hw/mlx4/qp.c1294
-rw-r--r--drivers/infiniband/hw/mlx4/srq.c334
-rw-r--r--drivers/infiniband/hw/mlx4/user.h92
14 files changed, 4035 insertions, 0 deletions
diff --git a/drivers/infiniband/Kconfig b/drivers/infiniband/Kconfig
index 82afba5c0bf4..37deaae49190 100644
--- a/drivers/infiniband/Kconfig
+++ b/drivers/infiniband/Kconfig
@@ -45,6 +45,8 @@ source "drivers/infiniband/hw/ehca/Kconfig"
45source "drivers/infiniband/hw/amso1100/Kconfig" 45source "drivers/infiniband/hw/amso1100/Kconfig"
46source "drivers/infiniband/hw/cxgb3/Kconfig" 46source "drivers/infiniband/hw/cxgb3/Kconfig"
47 47
48source "drivers/infiniband/hw/mlx4/Kconfig"
49
48source "drivers/infiniband/ulp/ipoib/Kconfig" 50source "drivers/infiniband/ulp/ipoib/Kconfig"
49 51
50source "drivers/infiniband/ulp/srp/Kconfig" 52source "drivers/infiniband/ulp/srp/Kconfig"
diff --git a/drivers/infiniband/Makefile b/drivers/infiniband/Makefile
index da2066c4f22c..75f325e40b54 100644
--- a/drivers/infiniband/Makefile
+++ b/drivers/infiniband/Makefile
@@ -4,6 +4,7 @@ obj-$(CONFIG_INFINIBAND_IPATH) += hw/ipath/
4obj-$(CONFIG_INFINIBAND_EHCA) += hw/ehca/ 4obj-$(CONFIG_INFINIBAND_EHCA) += hw/ehca/
5obj-$(CONFIG_INFINIBAND_AMSO1100) += hw/amso1100/ 5obj-$(CONFIG_INFINIBAND_AMSO1100) += hw/amso1100/
6obj-$(CONFIG_INFINIBAND_CXGB3) += hw/cxgb3/ 6obj-$(CONFIG_INFINIBAND_CXGB3) += hw/cxgb3/
7obj-$(CONFIG_MLX4_INFINIBAND) += hw/mlx4/
7obj-$(CONFIG_INFINIBAND_IPOIB) += ulp/ipoib/ 8obj-$(CONFIG_INFINIBAND_IPOIB) += ulp/ipoib/
8obj-$(CONFIG_INFINIBAND_SRP) += ulp/srp/ 9obj-$(CONFIG_INFINIBAND_SRP) += ulp/srp/
9obj-$(CONFIG_INFINIBAND_ISER) += ulp/iser/ 10obj-$(CONFIG_INFINIBAND_ISER) += ulp/iser/
diff --git a/drivers/infiniband/hw/mlx4/Kconfig b/drivers/infiniband/hw/mlx4/Kconfig
new file mode 100644
index 000000000000..b8912cdb9663
--- /dev/null
+++ b/drivers/infiniband/hw/mlx4/Kconfig
@@ -0,0 +1,9 @@
1config MLX4_INFINIBAND
2 tristate "Mellanox ConnectX HCA support"
3 depends on INFINIBAND
4 select MLX4_CORE
5 ---help---
6 This driver provides low-level InfiniBand support for
7 Mellanox ConnectX PCI Express host channel adapters (HCAs).
8 This is required to use InfiniBand protocols such as
9 IP-over-IB or SRP with these devices.
diff --git a/drivers/infiniband/hw/mlx4/Makefile b/drivers/infiniband/hw/mlx4/Makefile
new file mode 100644
index 000000000000..70f09c7826da
--- /dev/null
+++ b/drivers/infiniband/hw/mlx4/Makefile
@@ -0,0 +1,3 @@
1obj-$(CONFIG_MLX4_INFINIBAND) += mlx4_ib.o
2
3mlx4_ib-y := ah.o cq.o doorbell.o mad.o main.o mr.o qp.o srq.o
diff --git a/drivers/infiniband/hw/mlx4/ah.c b/drivers/infiniband/hw/mlx4/ah.c
new file mode 100644
index 000000000000..c75ac9463e20
--- /dev/null
+++ b/drivers/infiniband/hw/mlx4/ah.c
@@ -0,0 +1,100 @@
1/*
2 * Copyright (c) 2007 Cisco Systems, 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
33#include "mlx4_ib.h"
34
35struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
36{
37 struct mlx4_dev *dev = to_mdev(pd->device)->dev;
38 struct mlx4_ib_ah *ah;
39
40 ah = kmalloc(sizeof *ah, GFP_ATOMIC);
41 if (!ah)
42 return ERR_PTR(-ENOMEM);
43
44 memset(&ah->av, 0, sizeof ah->av);
45
46 ah->av.port_pd = cpu_to_be32(to_mpd(pd)->pdn | (ah_attr->port_num << 24));
47 ah->av.g_slid = ah_attr->src_path_bits;
48 ah->av.dlid = cpu_to_be16(ah_attr->dlid);
49 if (ah_attr->static_rate) {
50 ah->av.stat_rate = ah_attr->static_rate + MLX4_STAT_RATE_OFFSET;
51 while (ah->av.stat_rate > IB_RATE_2_5_GBPS + MLX4_STAT_RATE_OFFSET &&
52 !(1 << ah->av.stat_rate & dev->caps.stat_rate_support))
53 --ah->av.stat_rate;
54 }
55 ah->av.sl_tclass_flowlabel = cpu_to_be32(ah_attr->sl << 28);
56 if (ah_attr->ah_flags & IB_AH_GRH) {
57 ah->av.g_slid |= 0x80;
58 ah->av.gid_index = ah_attr->grh.sgid_index;
59 ah->av.hop_limit = ah_attr->grh.hop_limit;
60 ah->av.sl_tclass_flowlabel |=
61 cpu_to_be32((ah_attr->grh.traffic_class << 20) |
62 ah_attr->grh.flow_label);
63 memcpy(ah->av.dgid, ah_attr->grh.dgid.raw, 16);
64 }
65
66 return &ah->ibah;
67}
68
69int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr)
70{
71 struct mlx4_ib_ah *ah = to_mah(ibah);
72
73 memset(ah_attr, 0, sizeof *ah_attr);
74 ah_attr->dlid = be16_to_cpu(ah->av.dlid);
75 ah_attr->sl = be32_to_cpu(ah->av.sl_tclass_flowlabel) >> 28;
76 ah_attr->port_num = be32_to_cpu(ah->av.port_pd) >> 24;
77 if (ah->av.stat_rate)
78 ah_attr->static_rate = ah->av.stat_rate - MLX4_STAT_RATE_OFFSET;
79 ah_attr->src_path_bits = ah->av.g_slid & 0x7F;
80
81 if (mlx4_ib_ah_grh_present(ah)) {
82 ah_attr->ah_flags = IB_AH_GRH;
83
84 ah_attr->grh.traffic_class =
85 be32_to_cpu(ah->av.sl_tclass_flowlabel) >> 20;
86 ah_attr->grh.flow_label =
87 be32_to_cpu(ah->av.sl_tclass_flowlabel) & 0xfffff;
88 ah_attr->grh.hop_limit = ah->av.hop_limit;
89 ah_attr->grh.sgid_index = ah->av.gid_index;
90 memcpy(ah_attr->grh.dgid.raw, ah->av.dgid, 16);
91 }
92
93 return 0;
94}
95
96int mlx4_ib_destroy_ah(struct ib_ah *ah)
97{
98 kfree(to_mah(ah));
99 return 0;
100}
diff --git a/drivers/infiniband/hw/mlx4/cq.c b/drivers/infiniband/hw/mlx4/cq.c
new file mode 100644
index 000000000000..b2a290c6703a
--- /dev/null
+++ b/drivers/infiniband/hw/mlx4/cq.c
@@ -0,0 +1,525 @@
1/*
2 * Copyright (c) 2007 Cisco Systems, 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
33#include <linux/mlx4/cq.h>
34#include <linux/mlx4/qp.h>
35
36#include "mlx4_ib.h"
37#include "user.h"
38
39static void mlx4_ib_cq_comp(struct mlx4_cq *cq)
40{
41 struct ib_cq *ibcq = &to_mibcq(cq)->ibcq;
42 ibcq->comp_handler(ibcq, ibcq->cq_context);
43}
44
45static void mlx4_ib_cq_event(struct mlx4_cq *cq, enum mlx4_event type)
46{
47 struct ib_event event;
48 struct ib_cq *ibcq;
49
50 if (type != MLX4_EVENT_TYPE_CQ_ERROR) {
51 printk(KERN_WARNING "mlx4_ib: Unexpected event type %d "
52 "on CQ %06x\n", type, cq->cqn);
53 return;
54 }
55
56 ibcq = &to_mibcq(cq)->ibcq;
57 if (ibcq->event_handler) {
58 event.device = ibcq->device;
59 event.event = IB_EVENT_CQ_ERR;
60 event.element.cq = ibcq;
61 ibcq->event_handler(&event, ibcq->cq_context);
62 }
63}
64
65static void *get_cqe_from_buf(struct mlx4_ib_cq_buf *buf, int n)
66{
67 int offset = n * sizeof (struct mlx4_cqe);
68
69 if (buf->buf.nbufs == 1)
70 return buf->buf.u.direct.buf + offset;
71 else
72 return buf->buf.u.page_list[offset >> PAGE_SHIFT].buf +
73 (offset & (PAGE_SIZE - 1));
74}
75
76static void *get_cqe(struct mlx4_ib_cq *cq, int n)
77{
78 return get_cqe_from_buf(&cq->buf, n);
79}
80
81static void *get_sw_cqe(struct mlx4_ib_cq *cq, int n)
82{
83 struct mlx4_cqe *cqe = get_cqe(cq, n & cq->ibcq.cqe);
84
85 return (!!(cqe->owner_sr_opcode & MLX4_CQE_OWNER_MASK) ^
86 !!(n & (cq->ibcq.cqe + 1))) ? NULL : cqe;
87}
88
89static struct mlx4_cqe *next_cqe_sw(struct mlx4_ib_cq *cq)
90{
91 return get_sw_cqe(cq, cq->mcq.cons_index);
92}
93
94struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector,
95 struct ib_ucontext *context,
96 struct ib_udata *udata)
97{
98 struct mlx4_ib_dev *dev = to_mdev(ibdev);
99 struct mlx4_ib_cq *cq;
100 struct mlx4_uar *uar;
101 int buf_size;
102 int err;
103
104 if (entries < 1 || entries > dev->dev->caps.max_cqes)
105 return ERR_PTR(-EINVAL);
106
107 cq = kmalloc(sizeof *cq, GFP_KERNEL);
108 if (!cq)
109 return ERR_PTR(-ENOMEM);
110
111 entries = roundup_pow_of_two(entries + 1);
112 cq->ibcq.cqe = entries - 1;
113 buf_size = entries * sizeof (struct mlx4_cqe);
114 spin_lock_init(&cq->lock);
115
116 if (context) {
117 struct mlx4_ib_create_cq ucmd;
118
119 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
120 err = -EFAULT;
121 goto err_cq;
122 }
123
124 cq->umem = ib_umem_get(context, ucmd.buf_addr, buf_size,
125 IB_ACCESS_LOCAL_WRITE);
126 if (IS_ERR(cq->umem)) {
127 err = PTR_ERR(cq->umem);
128 goto err_cq;
129 }
130
131 err = mlx4_mtt_init(dev->dev, ib_umem_page_count(cq->umem),
132 ilog2(cq->umem->page_size), &cq->buf.mtt);
133 if (err)
134 goto err_buf;
135
136 err = mlx4_ib_umem_write_mtt(dev, &cq->buf.mtt, cq->umem);
137 if (err)
138 goto err_mtt;
139
140 err = mlx4_ib_db_map_user(to_mucontext(context), ucmd.db_addr,
141 &cq->db);
142 if (err)
143 goto err_mtt;
144
145 uar = &to_mucontext(context)->uar;
146 } else {
147 err = mlx4_ib_db_alloc(dev, &cq->db, 1);
148 if (err)
149 goto err_cq;
150
151 cq->mcq.set_ci_db = cq->db.db;
152 cq->mcq.arm_db = cq->db.db + 1;
153 *cq->mcq.set_ci_db = 0;
154 *cq->mcq.arm_db = 0;
155
156 if (mlx4_buf_alloc(dev->dev, buf_size, PAGE_SIZE * 2, &cq->buf.buf)) {
157 err = -ENOMEM;
158 goto err_db;
159 }
160
161 err = mlx4_mtt_init(dev->dev, cq->buf.buf.npages, cq->buf.buf.page_shift,
162 &cq->buf.mtt);
163 if (err)
164 goto err_buf;
165
166 err = mlx4_buf_write_mtt(dev->dev, &cq->buf.mtt, &cq->buf.buf);
167 if (err)
168 goto err_mtt;
169
170 uar = &dev->priv_uar;
171 }
172
173 err = mlx4_cq_alloc(dev->dev, entries, &cq->buf.mtt, uar,
174 cq->db.dma, &cq->mcq);
175 if (err)
176 goto err_dbmap;
177
178 cq->mcq.comp = mlx4_ib_cq_comp;
179 cq->mcq.event = mlx4_ib_cq_event;
180
181 if (context)
182 if (ib_copy_to_udata(udata, &cq->mcq.cqn, sizeof (__u32))) {
183 err = -EFAULT;
184 goto err_dbmap;
185 }
186
187 return &cq->ibcq;
188
189err_dbmap:
190 if (context)
191 mlx4_ib_db_unmap_user(to_mucontext(context), &cq->db);
192
193err_mtt:
194 mlx4_mtt_cleanup(dev->dev, &cq->buf.mtt);
195
196err_buf:
197 if (context)
198 ib_umem_release(cq->umem);
199 else
200 mlx4_buf_free(dev->dev, entries * sizeof (struct mlx4_cqe),
201 &cq->buf.buf);
202
203err_db:
204 if (!context)
205 mlx4_ib_db_free(dev, &cq->db);
206
207err_cq:
208 kfree(cq);
209
210 return ERR_PTR(err);
211}
212
213int mlx4_ib_destroy_cq(struct ib_cq *cq)
214{
215 struct mlx4_ib_dev *dev = to_mdev(cq->device);
216 struct mlx4_ib_cq *mcq = to_mcq(cq);
217
218 mlx4_cq_free(dev->dev, &mcq->mcq);
219 mlx4_mtt_cleanup(dev->dev, &mcq->buf.mtt);
220
221 if (cq->uobject) {
222 mlx4_ib_db_unmap_user(to_mucontext(cq->uobject->context), &mcq->db);
223 ib_umem_release(mcq->umem);
224 } else {
225 mlx4_buf_free(dev->dev, (cq->cqe + 1) * sizeof (struct mlx4_cqe),
226 &mcq->buf.buf);
227 mlx4_ib_db_free(dev, &mcq->db);
228 }
229
230 kfree(mcq);
231
232 return 0;
233}
234
235static void dump_cqe(void *cqe)
236{
237 __be32 *buf = cqe;
238
239 printk(KERN_DEBUG "CQE contents %08x %08x %08x %08x %08x %08x %08x %08x\n",
240 be32_to_cpu(buf[0]), be32_to_cpu(buf[1]), be32_to_cpu(buf[2]),
241 be32_to_cpu(buf[3]), be32_to_cpu(buf[4]), be32_to_cpu(buf[5]),
242 be32_to_cpu(buf[6]), be32_to_cpu(buf[7]));
243}
244
245static void mlx4_ib_handle_error_cqe(struct mlx4_err_cqe *cqe,
246 struct ib_wc *wc)
247{
248 if (cqe->syndrome == MLX4_CQE_SYNDROME_LOCAL_QP_OP_ERR) {
249 printk(KERN_DEBUG "local QP operation err "
250 "(QPN %06x, WQE index %x, vendor syndrome %02x, "
251 "opcode = %02x)\n",
252 be32_to_cpu(cqe->my_qpn), be16_to_cpu(cqe->wqe_index),
253 cqe->vendor_err_syndrome,
254 cqe->owner_sr_opcode & ~MLX4_CQE_OWNER_MASK);
255 dump_cqe(cqe);
256 }
257
258 switch (cqe->syndrome) {
259 case MLX4_CQE_SYNDROME_LOCAL_LENGTH_ERR:
260 wc->status = IB_WC_LOC_LEN_ERR;
261 break;
262 case MLX4_CQE_SYNDROME_LOCAL_QP_OP_ERR:
263 wc->status = IB_WC_LOC_QP_OP_ERR;
264 break;
265 case MLX4_CQE_SYNDROME_LOCAL_PROT_ERR:
266 wc->status = IB_WC_LOC_PROT_ERR;
267 break;
268 case MLX4_CQE_SYNDROME_WR_FLUSH_ERR:
269 wc->status = IB_WC_WR_FLUSH_ERR;
270 break;
271 case MLX4_CQE_SYNDROME_MW_BIND_ERR:
272 wc->status = IB_WC_MW_BIND_ERR;
273 break;
274 case MLX4_CQE_SYNDROME_BAD_RESP_ERR:
275 wc->status = IB_WC_BAD_RESP_ERR;
276 break;
277 case MLX4_CQE_SYNDROME_LOCAL_ACCESS_ERR:
278 wc->status = IB_WC_LOC_ACCESS_ERR;
279 break;
280 case MLX4_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR:
281 wc->status = IB_WC_REM_INV_REQ_ERR;
282 break;
283 case MLX4_CQE_SYNDROME_REMOTE_ACCESS_ERR:
284 wc->status = IB_WC_REM_ACCESS_ERR;
285 break;
286 case MLX4_CQE_SYNDROME_REMOTE_OP_ERR:
287 wc->status = IB_WC_REM_OP_ERR;
288 break;
289 case MLX4_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR:
290 wc->status = IB_WC_RETRY_EXC_ERR;
291 break;
292 case MLX4_CQE_SYNDROME_RNR_RETRY_EXC_ERR:
293 wc->status = IB_WC_RNR_RETRY_EXC_ERR;
294 break;
295 case MLX4_CQE_SYNDROME_REMOTE_ABORTED_ERR:
296 wc->status = IB_WC_REM_ABORT_ERR;
297 break;
298 default:
299 wc->status = IB_WC_GENERAL_ERR;
300 break;
301 }
302
303 wc->vendor_err = cqe->vendor_err_syndrome;
304}
305
306static int mlx4_ib_poll_one(struct mlx4_ib_cq *cq,
307 struct mlx4_ib_qp **cur_qp,
308 struct ib_wc *wc)
309{
310 struct mlx4_cqe *cqe;
311 struct mlx4_qp *mqp;
312 struct mlx4_ib_wq *wq;
313 struct mlx4_ib_srq *srq;
314 int is_send;
315 int is_error;
316 u16 wqe_ctr;
317
318 cqe = next_cqe_sw(cq);
319 if (!cqe)
320 return -EAGAIN;
321
322 ++cq->mcq.cons_index;
323
324 /*
325 * Make sure we read CQ entry contents after we've checked the
326 * ownership bit.
327 */
328 rmb();
329
330 is_send = cqe->owner_sr_opcode & MLX4_CQE_IS_SEND_MASK;
331 is_error = (cqe->owner_sr_opcode & MLX4_CQE_OPCODE_MASK) ==
332 MLX4_CQE_OPCODE_ERROR;
333
334 if (!*cur_qp ||
335 (be32_to_cpu(cqe->my_qpn) & 0xffffff) != (*cur_qp)->mqp.qpn) {
336 /*
337 * We do not have to take the QP table lock here,
338 * because CQs will be locked while QPs are removed
339 * from the table.
340 */
341 mqp = __mlx4_qp_lookup(to_mdev(cq->ibcq.device)->dev,
342 be32_to_cpu(cqe->my_qpn));
343 if (unlikely(!mqp)) {
344 printk(KERN_WARNING "CQ %06x with entry for unknown QPN %06x\n",
345 cq->mcq.cqn, be32_to_cpu(cqe->my_qpn) & 0xffffff);
346 return -EINVAL;
347 }
348
349 *cur_qp = to_mibqp(mqp);
350 }
351
352 wc->qp = &(*cur_qp)->ibqp;
353
354 if (is_send) {
355 wq = &(*cur_qp)->sq;
356 wqe_ctr = be16_to_cpu(cqe->wqe_index);
357 wq->tail += wqe_ctr - (u16) wq->tail;
358 wc->wr_id = wq->wrid[wq->tail & (wq->max - 1)];
359 ++wq->tail;
360 } else if ((*cur_qp)->ibqp.srq) {
361 srq = to_msrq((*cur_qp)->ibqp.srq);
362 wqe_ctr = be16_to_cpu(cqe->wqe_index);
363 wc->wr_id = srq->wrid[wqe_ctr];
364 mlx4_ib_free_srq_wqe(srq, wqe_ctr);
365 } else {
366 wq = &(*cur_qp)->rq;
367 wc->wr_id = wq->wrid[wq->tail & (wq->max - 1)];
368 ++wq->tail;
369 }
370
371 if (unlikely(is_error)) {
372 mlx4_ib_handle_error_cqe((struct mlx4_err_cqe *) cqe, wc);
373 return 0;
374 }
375
376 wc->status = IB_WC_SUCCESS;
377
378 if (is_send) {
379 wc->wc_flags = 0;
380 switch (cqe->owner_sr_opcode & MLX4_CQE_OPCODE_MASK) {
381 case MLX4_OPCODE_RDMA_WRITE_IMM:
382 wc->wc_flags |= IB_WC_WITH_IMM;
383 case MLX4_OPCODE_RDMA_WRITE:
384 wc->opcode = IB_WC_RDMA_WRITE;
385 break;
386 case MLX4_OPCODE_SEND_IMM:
387 wc->wc_flags |= IB_WC_WITH_IMM;
388 case MLX4_OPCODE_SEND:
389 wc->opcode = IB_WC_SEND;
390 break;
391 case MLX4_OPCODE_RDMA_READ:
392 wc->opcode = IB_WC_SEND;
393 wc->byte_len = be32_to_cpu(cqe->byte_cnt);
394 break;
395 case MLX4_OPCODE_ATOMIC_CS:
396 wc->opcode = IB_WC_COMP_SWAP;
397 wc->byte_len = 8;
398 break;
399 case MLX4_OPCODE_ATOMIC_FA:
400 wc->opcode = IB_WC_FETCH_ADD;
401 wc->byte_len = 8;
402 break;
403 case MLX4_OPCODE_BIND_MW:
404 wc->opcode = IB_WC_BIND_MW;
405 break;
406 }
407 } else {
408 wc->byte_len = be32_to_cpu(cqe->byte_cnt);
409
410 switch (cqe->owner_sr_opcode & MLX4_CQE_OPCODE_MASK) {
411 case MLX4_RECV_OPCODE_RDMA_WRITE_IMM:
412 wc->opcode = IB_WC_RECV_RDMA_WITH_IMM;
413 wc->wc_flags = IB_WC_WITH_IMM;
414 wc->imm_data = cqe->immed_rss_invalid;
415 break;
416 case MLX4_RECV_OPCODE_SEND:
417 wc->opcode = IB_WC_RECV;
418 wc->wc_flags = 0;
419 break;
420 case MLX4_RECV_OPCODE_SEND_IMM:
421 wc->opcode = IB_WC_RECV;
422 wc->wc_flags = IB_WC_WITH_IMM;
423 wc->imm_data = cqe->immed_rss_invalid;
424 break;
425 }
426
427 wc->slid = be16_to_cpu(cqe->rlid);
428 wc->sl = cqe->sl >> 4;
429 wc->src_qp = be32_to_cpu(cqe->g_mlpath_rqpn) & 0xffffff;
430 wc->dlid_path_bits = (be32_to_cpu(cqe->g_mlpath_rqpn) >> 24) & 0x7f;
431 wc->wc_flags |= be32_to_cpu(cqe->g_mlpath_rqpn) & 0x80000000 ?
432 IB_WC_GRH : 0;
433 wc->pkey_index = be32_to_cpu(cqe->immed_rss_invalid) >> 16;
434 }
435
436 return 0;
437}
438
439int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
440{
441 struct mlx4_ib_cq *cq = to_mcq(ibcq);
442 struct mlx4_ib_qp *cur_qp = NULL;
443 unsigned long flags;
444 int npolled;
445 int err = 0;
446
447 spin_lock_irqsave(&cq->lock, flags);
448
449 for (npolled = 0; npolled < num_entries; ++npolled) {
450 err = mlx4_ib_poll_one(cq, &cur_qp, wc + npolled);
451 if (err)
452 break;
453 }
454
455 if (npolled)
456 mlx4_cq_set_ci(&cq->mcq);
457
458 spin_unlock_irqrestore(&cq->lock, flags);
459
460 if (err == 0 || err == -EAGAIN)
461 return npolled;
462 else
463 return err;
464}
465
466int mlx4_ib_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
467{
468 mlx4_cq_arm(&to_mcq(ibcq)->mcq,
469 (flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED ?
470 MLX4_CQ_DB_REQ_NOT_SOL : MLX4_CQ_DB_REQ_NOT,
471 to_mdev(ibcq->device)->uar_map,
472 MLX4_GET_DOORBELL_LOCK(&to_mdev(ibcq->device)->uar_lock));
473
474 return 0;
475}
476
477void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq)
478{
479 u32 prod_index;
480 int nfreed = 0;
481 struct mlx4_cqe *cqe;
482
483 /*
484 * First we need to find the current producer index, so we
485 * know where to start cleaning from. It doesn't matter if HW
486 * adds new entries after this loop -- the QP we're worried
487 * about is already in RESET, so the new entries won't come
488 * from our QP and therefore don't need to be checked.
489 */
490 for (prod_index = cq->mcq.cons_index; get_sw_cqe(cq, prod_index); ++prod_index)
491 if (prod_index == cq->mcq.cons_index + cq->ibcq.cqe)
492 break;
493
494 /*
495 * Now sweep backwards through the CQ, removing CQ entries
496 * that match our QP by copying older entries on top of them.
497 */
498 while ((int) --prod_index - (int) cq->mcq.cons_index >= 0) {
499 cqe = get_cqe(cq, prod_index & cq->ibcq.cqe);
500 if ((be32_to_cpu(cqe->my_qpn) & 0xffffff) == qpn) {
501 if (srq && !(cqe->owner_sr_opcode & MLX4_CQE_IS_SEND_MASK))
502 mlx4_ib_free_srq_wqe(srq, be16_to_cpu(cqe->wqe_index));
503 ++nfreed;
504 } else if (nfreed)
505 memcpy(get_cqe(cq, (prod_index + nfreed) & cq->ibcq.cqe),
506 cqe, sizeof *cqe);
507 }
508
509 if (nfreed) {
510 cq->mcq.cons_index += nfreed;
511 /*
512 * Make sure update of buffer contents is done before
513 * updating consumer index.
514 */
515 wmb();
516 mlx4_cq_set_ci(&cq->mcq);
517 }
518}
519
520void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq)
521{
522 spin_lock_irq(&cq->lock);
523 __mlx4_ib_cq_clean(cq, qpn, srq);
524 spin_unlock_irq(&cq->lock);
525}
diff --git a/drivers/infiniband/hw/mlx4/doorbell.c b/drivers/infiniband/hw/mlx4/doorbell.c
new file mode 100644
index 000000000000..1c36087aef14
--- /dev/null
+++ b/drivers/infiniband/hw/mlx4/doorbell.c
@@ -0,0 +1,216 @@
1/*
2 * Copyright (c) 2007 Cisco Systems, 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
33#include <linux/slab.h>
34
35#include "mlx4_ib.h"
36
37struct mlx4_ib_db_pgdir {
38 struct list_head list;
39 DECLARE_BITMAP(order0, MLX4_IB_DB_PER_PAGE);
40 DECLARE_BITMAP(order1, MLX4_IB_DB_PER_PAGE / 2);
41 unsigned long *bits[2];
42 __be32 *db_page;
43 dma_addr_t db_dma;
44};
45
46static struct mlx4_ib_db_pgdir *mlx4_ib_alloc_db_pgdir(struct mlx4_ib_dev *dev)
47{
48 struct mlx4_ib_db_pgdir *pgdir;
49
50 pgdir = kzalloc(sizeof *pgdir, GFP_KERNEL);
51 if (!pgdir)
52 return NULL;
53
54 bitmap_fill(pgdir->order1, MLX4_IB_DB_PER_PAGE / 2);
55 pgdir->bits[0] = pgdir->order0;
56 pgdir->bits[1] = pgdir->order1;
57 pgdir->db_page = dma_alloc_coherent(dev->ib_dev.dma_device,
58 PAGE_SIZE, &pgdir->db_dma,
59 GFP_KERNEL);
60 if (!pgdir->db_page) {
61 kfree(pgdir);
62 return NULL;
63 }
64
65 return pgdir;
66}
67
68static int mlx4_ib_alloc_db_from_pgdir(struct mlx4_ib_db_pgdir *pgdir,
69 struct mlx4_ib_db *db, int order)
70{
71 int o;
72 int i;
73
74 for (o = order; o <= 1; ++o) {
75 i = find_first_bit(pgdir->bits[o], MLX4_IB_DB_PER_PAGE >> o);
76 if (i < MLX4_IB_DB_PER_PAGE >> o)
77 goto found;
78 }
79
80 return -ENOMEM;
81
82found:
83 clear_bit(i, pgdir->bits[o]);
84
85 i <<= o;
86
87 if (o > order)
88 set_bit(i ^ 1, pgdir->bits[order]);
89
90 db->u.pgdir = pgdir;
91 db->index = i;
92 db->db = pgdir->db_page + db->index;
93 db->dma = pgdir->db_dma + db->index * 4;
94 db->order = order;
95
96 return 0;
97}
98
99int mlx4_ib_db_alloc(struct mlx4_ib_dev *dev, struct mlx4_ib_db *db, int order)
100{
101 struct mlx4_ib_db_pgdir *pgdir;
102 int ret = 0;
103
104 mutex_lock(&dev->pgdir_mutex);
105
106 list_for_each_entry(pgdir, &dev->pgdir_list, list)
107 if (!mlx4_ib_alloc_db_from_pgdir(pgdir, db, order))
108 goto out;
109
110 pgdir = mlx4_ib_alloc_db_pgdir(dev);
111 if (!pgdir) {
112 ret = -ENOMEM;
113 goto out;
114 }
115
116 list_add(&pgdir->list, &dev->pgdir_list);
117
118 /* This should never fail -- we just allocated an empty page: */
119 WARN_ON(mlx4_ib_alloc_db_from_pgdir(pgdir, db, order));
120
121out:
122 mutex_unlock(&dev->pgdir_mutex);
123
124 return ret;
125}
126
127void mlx4_ib_db_free(struct mlx4_ib_dev *dev, struct mlx4_ib_db *db)
128{
129 int o;
130 int i;
131
132 mutex_lock(&dev->pgdir_mutex);
133
134 o = db->order;
135 i = db->index;
136
137 if (db->order == 0 && test_bit(i ^ 1, db->u.pgdir->order0)) {
138 clear_bit(i ^ 1, db->u.pgdir->order0);
139 ++o;
140 }
141
142 i >>= o;
143 set_bit(i, db->u.pgdir->bits[o]);
144
145 if (bitmap_full(db->u.pgdir->order1, MLX4_IB_DB_PER_PAGE / 2)) {
146 dma_free_coherent(dev->ib_dev.dma_device, PAGE_SIZE,
147 db->u.pgdir->db_page, db->u.pgdir->db_dma);
148 list_del(&db->u.pgdir->list);
149 kfree(db->u.pgdir);
150 }
151
152 mutex_unlock(&dev->pgdir_mutex);
153}
154
155struct mlx4_ib_user_db_page {
156 struct list_head list;
157 struct ib_umem *umem;
158 unsigned long user_virt;
159 int refcnt;
160};
161
162int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt,
163 struct mlx4_ib_db *db)
164{
165 struct mlx4_ib_user_db_page *page;
166 struct ib_umem_chunk *chunk;
167 int err = 0;
168
169 mutex_lock(&context->db_page_mutex);
170
171 list_for_each_entry(page, &context->db_page_list, list)
172 if (page->user_virt == (virt & PAGE_MASK))
173 goto found;
174
175 page = kmalloc(sizeof *page, GFP_KERNEL);
176 if (!page) {
177 err = -ENOMEM;
178 goto out;
179 }
180
181 page->user_virt = (virt & PAGE_MASK);
182 page->refcnt = 0;
183 page->umem = ib_umem_get(&context->ibucontext, virt & PAGE_MASK,
184 PAGE_SIZE, 0);
185 if (IS_ERR(page->umem)) {
186 err = PTR_ERR(page->umem);
187 kfree(page);
188 goto out;
189 }
190
191 list_add(&page->list, &context->db_page_list);
192
193found:
194 chunk = list_entry(page->umem->chunk_list.next, struct ib_umem_chunk, list);
195 db->dma = sg_dma_address(chunk->page_list) + (virt & ~PAGE_MASK);
196 db->u.user_page = page;
197 ++page->refcnt;
198
199out:
200 mutex_unlock(&context->db_page_mutex);
201
202 return err;
203}
204
205void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_ib_db *db)
206{
207 mutex_lock(&context->db_page_mutex);
208
209 if (!--db->u.user_page->refcnt) {
210 list_del(&db->u.user_page->list);
211 ib_umem_release(db->u.user_page->umem);
212 kfree(db->u.user_page);
213 }
214
215 mutex_unlock(&context->db_page_mutex);
216}
diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c
new file mode 100644
index 000000000000..333091787c5f
--- /dev/null
+++ b/drivers/infiniband/hw/mlx4/mad.c
@@ -0,0 +1,339 @@
1/*
2 * Copyright (c) 2007 Cisco Systems, 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
33#include <rdma/ib_mad.h>
34#include <rdma/ib_smi.h>
35
36#include <linux/mlx4/cmd.h>
37
38#include "mlx4_ib.h"
39
40enum {
41 MLX4_IB_VENDOR_CLASS1 = 0x9,
42 MLX4_IB_VENDOR_CLASS2 = 0xa
43};
44
45int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int ignore_mkey, int ignore_bkey,
46 int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
47 void *in_mad, void *response_mad)
48{
49 struct mlx4_cmd_mailbox *inmailbox, *outmailbox;
50 void *inbox;
51 int err;
52 u32 in_modifier = port;
53 u8 op_modifier = 0;
54
55 inmailbox = mlx4_alloc_cmd_mailbox(dev->dev);
56 if (IS_ERR(inmailbox))
57 return PTR_ERR(inmailbox);
58 inbox = inmailbox->buf;
59
60 outmailbox = mlx4_alloc_cmd_mailbox(dev->dev);
61 if (IS_ERR(outmailbox)) {
62 mlx4_free_cmd_mailbox(dev->dev, inmailbox);
63 return PTR_ERR(outmailbox);
64 }
65
66 memcpy(inbox, in_mad, 256);
67
68 /*
69 * Key check traps can't be generated unless we have in_wc to
70 * tell us where to send the trap.
71 */
72 if (ignore_mkey || !in_wc)
73 op_modifier |= 0x1;
74 if (ignore_bkey || !in_wc)
75 op_modifier |= 0x2;
76
77 if (in_wc) {
78 struct {
79 __be32 my_qpn;
80 u32 reserved1;
81 __be32 rqpn;
82 u8 sl;
83 u8 g_path;
84 u16 reserved2[2];
85 __be16 pkey;
86 u32 reserved3[11];
87 u8 grh[40];
88 } *ext_info;
89
90 memset(inbox + 256, 0, 256);
91 ext_info = inbox + 256;
92
93 ext_info->my_qpn = cpu_to_be32(in_wc->qp->qp_num);
94 ext_info->rqpn = cpu_to_be32(in_wc->src_qp);
95 ext_info->sl = in_wc->sl << 4;
96 ext_info->g_path = in_wc->dlid_path_bits |
97 (in_wc->wc_flags & IB_WC_GRH ? 0x80 : 0);
98 ext_info->pkey = cpu_to_be16(in_wc->pkey_index);
99
100 if (in_grh)
101 memcpy(ext_info->grh, in_grh, 40);
102
103 op_modifier |= 0x4;
104
105 in_modifier |= in_wc->slid << 16;
106 }
107
108 err = mlx4_cmd_box(dev->dev, inmailbox->dma, outmailbox->dma,
109 in_modifier, op_modifier,
110 MLX4_CMD_MAD_IFC, MLX4_CMD_TIME_CLASS_C);
111
112 if (!err);
113 memcpy(response_mad, outmailbox->buf, 256);
114
115 mlx4_free_cmd_mailbox(dev->dev, inmailbox);
116 mlx4_free_cmd_mailbox(dev->dev, outmailbox);
117
118 return err;
119}
120
121static void update_sm_ah(struct mlx4_ib_dev *dev, u8 port_num, u16 lid, u8 sl)
122{
123 struct ib_ah *new_ah;
124 struct ib_ah_attr ah_attr;
125
126 if (!dev->send_agent[port_num - 1][0])
127 return;
128
129 memset(&ah_attr, 0, sizeof ah_attr);
130 ah_attr.dlid = lid;
131 ah_attr.sl = sl;
132 ah_attr.port_num = port_num;
133
134 new_ah = ib_create_ah(dev->send_agent[port_num - 1][0]->qp->pd,
135 &ah_attr);
136 if (IS_ERR(new_ah))
137 return;
138
139 spin_lock(&dev->sm_lock);
140 if (dev->sm_ah[port_num - 1])
141 ib_destroy_ah(dev->sm_ah[port_num - 1]);
142 dev->sm_ah[port_num - 1] = new_ah;
143 spin_unlock(&dev->sm_lock);
144}
145
146/*
147 * Snoop SM MADs for port info and P_Key table sets, so we can
148 * synthesize LID change and P_Key change events.
149 */
150static void smp_snoop(struct ib_device *ibdev, u8 port_num, struct ib_mad *mad)
151{
152 struct ib_event event;
153
154 if ((mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED ||
155 mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) &&
156 mad->mad_hdr.method == IB_MGMT_METHOD_SET) {
157 if (mad->mad_hdr.attr_id == IB_SMP_ATTR_PORT_INFO) {
158 struct ib_port_info *pinfo =
159 (struct ib_port_info *) ((struct ib_smp *) mad)->data;
160
161 update_sm_ah(to_mdev(ibdev), port_num,
162 be16_to_cpu(pinfo->sm_lid),
163 pinfo->neighbormtu_mastersmsl & 0xf);
164
165 event.device = ibdev;
166 event.element.port_num = port_num;
167
168 if(pinfo->clientrereg_resv_subnetto & 0x80)
169 event.event = IB_EVENT_CLIENT_REREGISTER;
170 else
171 event.event = IB_EVENT_LID_CHANGE;
172
173 ib_dispatch_event(&event);
174 }
175
176 if (mad->mad_hdr.attr_id == IB_SMP_ATTR_PKEY_TABLE) {
177 event.device = ibdev;
178 event.event = IB_EVENT_PKEY_CHANGE;
179 event.element.port_num = port_num;
180 ib_dispatch_event(&event);
181 }
182 }
183}
184
185static void node_desc_override(struct ib_device *dev,
186 struct ib_mad *mad)
187{
188 if ((mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED ||
189 mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) &&
190 mad->mad_hdr.method == IB_MGMT_METHOD_GET_RESP &&
191 mad->mad_hdr.attr_id == IB_SMP_ATTR_NODE_DESC) {
192 spin_lock(&to_mdev(dev)->sm_lock);
193 memcpy(((struct ib_smp *) mad)->data, dev->node_desc, 64);
194 spin_unlock(&to_mdev(dev)->sm_lock);
195 }
196}
197
198static void forward_trap(struct mlx4_ib_dev *dev, u8 port_num, struct ib_mad *mad)
199{
200 int qpn = mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_SUBN_LID_ROUTED;
201 struct ib_mad_send_buf *send_buf;
202 struct ib_mad_agent *agent = dev->send_agent[port_num - 1][qpn];
203 int ret;
204
205 if (agent) {
206 send_buf = ib_create_send_mad(agent, qpn, 0, 0, IB_MGMT_MAD_HDR,
207 IB_MGMT_MAD_DATA, GFP_ATOMIC);
208 /*
209 * We rely here on the fact that MLX QPs don't use the
210 * address handle after the send is posted (this is
211 * wrong following the IB spec strictly, but we know
212 * it's OK for our devices).
213 */
214 spin_lock(&dev->sm_lock);
215 memcpy(send_buf->mad, mad, sizeof *mad);
216 if ((send_buf->ah = dev->sm_ah[port_num - 1]))
217 ret = ib_post_send_mad(send_buf, NULL);
218 else
219 ret = -EINVAL;
220 spin_unlock(&dev->sm_lock);
221
222 if (ret)
223 ib_free_send_mad(send_buf);
224 }
225}
226
227int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
228 struct ib_wc *in_wc, struct ib_grh *in_grh,
229 struct ib_mad *in_mad, struct ib_mad *out_mad)
230{
231 u16 slid;
232 int err;
233
234 slid = in_wc ? in_wc->slid : be16_to_cpu(IB_LID_PERMISSIVE);
235
236 if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP && slid == 0) {
237 forward_trap(to_mdev(ibdev), port_num, in_mad);
238 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
239 }
240
241 if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED ||
242 in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) {
243 if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET &&
244 in_mad->mad_hdr.method != IB_MGMT_METHOD_SET &&
245 in_mad->mad_hdr.method != IB_MGMT_METHOD_TRAP_REPRESS)
246 return IB_MAD_RESULT_SUCCESS;
247
248 /*
249 * Don't process SMInfo queries or vendor-specific
250 * MADs -- the SMA can't handle them.
251 */
252 if (in_mad->mad_hdr.attr_id == IB_SMP_ATTR_SM_INFO ||
253 ((in_mad->mad_hdr.attr_id & IB_SMP_ATTR_VENDOR_MASK) ==
254 IB_SMP_ATTR_VENDOR_MASK))
255 return IB_MAD_RESULT_SUCCESS;
256 } else if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT ||
257 in_mad->mad_hdr.mgmt_class == MLX4_IB_VENDOR_CLASS1 ||
258 in_mad->mad_hdr.mgmt_class == MLX4_IB_VENDOR_CLASS2) {
259 if (in_mad->mad_hdr.method != IB_MGMT_METHOD_GET &&
260 in_mad->mad_hdr.method != IB_MGMT_METHOD_SET)
261 return IB_MAD_RESULT_SUCCESS;
262 } else
263 return IB_MAD_RESULT_SUCCESS;
264
265 err = mlx4_MAD_IFC(to_mdev(ibdev),
266 mad_flags & IB_MAD_IGNORE_MKEY,
267 mad_flags & IB_MAD_IGNORE_BKEY,
268 port_num, in_wc, in_grh, in_mad, out_mad);
269 if (err)
270 return IB_MAD_RESULT_FAILURE;
271
272 if (!out_mad->mad_hdr.status) {
273 smp_snoop(ibdev, port_num, in_mad);
274 node_desc_override(ibdev, out_mad);
275 }
276
277 /* set return bit in status of directed route responses */
278 if (in_mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
279 out_mad->mad_hdr.status |= cpu_to_be16(1 << 15);
280
281 if (in_mad->mad_hdr.method == IB_MGMT_METHOD_TRAP_REPRESS)
282 /* no response for trap repress */
283 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_CONSUMED;
284
285 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
286}
287
288static void send_handler(struct ib_mad_agent *agent,
289 struct ib_mad_send_wc *mad_send_wc)
290{
291 ib_free_send_mad(mad_send_wc->send_buf);
292}
293
294int mlx4_ib_mad_init(struct mlx4_ib_dev *dev)
295{
296 struct ib_mad_agent *agent;
297 int p, q;
298 int ret;
299
300 for (p = 0; p < dev->dev->caps.num_ports; ++p)
301 for (q = 0; q <= 1; ++q) {
302 agent = ib_register_mad_agent(&dev->ib_dev, p + 1,
303 q ? IB_QPT_GSI : IB_QPT_SMI,
304 NULL, 0, send_handler,
305 NULL, NULL);
306 if (IS_ERR(agent)) {
307 ret = PTR_ERR(agent);
308 goto err;
309 }
310 dev->send_agent[p][q] = agent;
311 }
312
313 return 0;
314
315err:
316 for (p = 0; p < dev->dev->caps.num_ports; ++p)
317 for (q = 0; q <= 1; ++q)
318 if (dev->send_agent[p][q])
319 ib_unregister_mad_agent(dev->send_agent[p][q]);
320
321 return ret;
322}
323
324void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev)
325{
326 struct ib_mad_agent *agent;
327 int p, q;
328
329 for (p = 0; p < dev->dev->caps.num_ports; ++p) {
330 for (q = 0; q <= 1; ++q) {
331 agent = dev->send_agent[p][q];
332 dev->send_agent[p][q] = NULL;
333 ib_unregister_mad_agent(agent);
334 }
335
336 if (dev->sm_ah[p])
337 ib_destroy_ah(dev->sm_ah[p]);
338 }
339}
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
new file mode 100644
index 000000000000..688ecb4c39f3
--- /dev/null
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -0,0 +1,651 @@
1/*
2 * Copyright (c) 2006, 2007 Cisco Systems, 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
33#include <linux/module.h>
34#include <linux/init.h>
35#include <linux/errno.h>
36
37#include <rdma/ib_smi.h>
38#include <rdma/ib_user_verbs.h>
39
40#include <linux/mlx4/driver.h>
41#include <linux/mlx4/cmd.h>
42
43#include "mlx4_ib.h"
44#include "user.h"
45
46#define DRV_NAME "mlx4_ib"
47#define DRV_VERSION "0.01"
48#define DRV_RELDATE "May 1, 2006"
49
50MODULE_AUTHOR("Roland Dreier");
51MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver");
52MODULE_LICENSE("Dual BSD/GPL");
53MODULE_VERSION(DRV_VERSION);
54
55static const char mlx4_ib_version[] __devinitdata =
56 DRV_NAME ": Mellanox ConnectX InfiniBand driver v"
57 DRV_VERSION " (" DRV_RELDATE ")\n";
58
59static void init_query_mad(struct ib_smp *mad)
60{
61 mad->base_version = 1;
62 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED;
63 mad->class_version = 1;
64 mad->method = IB_MGMT_METHOD_GET;
65}
66
67static int mlx4_ib_query_device(struct ib_device *ibdev,
68 struct ib_device_attr *props)
69{
70 struct mlx4_ib_dev *dev = to_mdev(ibdev);
71 struct ib_smp *in_mad = NULL;
72 struct ib_smp *out_mad = NULL;
73 int err = -ENOMEM;
74
75 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
76 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
77 if (!in_mad || !out_mad)
78 goto out;
79
80 init_query_mad(in_mad);
81 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
82
83 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, 1, NULL, NULL, in_mad, out_mad);
84 if (err)
85 goto out;
86
87 memset(props, 0, sizeof *props);
88
89 props->fw_ver = dev->dev->caps.fw_ver;
90 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT |
91 IB_DEVICE_PORT_ACTIVE_EVENT |
92 IB_DEVICE_SYS_IMAGE_GUID |
93 IB_DEVICE_RC_RNR_NAK_GEN;
94 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR)
95 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR;
96 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR)
97 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR;
98 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM)
99 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG;
100 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT)
101 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE;
102
103 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) &
104 0xffffff;
105 props->vendor_part_id = be16_to_cpup((__be16 *) (out_mad->data + 30));
106 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32));
107 memcpy(&props->sys_image_guid, out_mad->data + 4, 8);
108
109 props->max_mr_size = ~0ull;
110 props->page_size_cap = dev->dev->caps.page_size_cap;
111 props->max_qp = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps;
112 props->max_qp_wr = dev->dev->caps.max_wqes;
113 props->max_sge = min(dev->dev->caps.max_sq_sg,
114 dev->dev->caps.max_rq_sg);
115 props->max_cq = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs;
116 props->max_cqe = dev->dev->caps.max_cqes;
117 props->max_mr = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws;
118 props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds;
119 props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma;
120 props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma;
121 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp;
122 props->max_srq = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs;
123 props->max_srq_wr = dev->dev->caps.max_srq_wqes;
124 props->max_srq_sge = dev->dev->caps.max_srq_sge;
125 props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay;
126 props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ?
127 IB_ATOMIC_HCA : IB_ATOMIC_NONE;
128 props->max_pkeys = dev->dev->caps.pkey_table_len;
129 props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms;
130 props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm;
131 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
132 props->max_mcast_grp;
133 props->max_map_per_fmr = (1 << (32 - ilog2(dev->dev->caps.num_mpts))) - 1;
134
135out:
136 kfree(in_mad);
137 kfree(out_mad);
138
139 return err;
140}
141
142static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port,
143 struct ib_port_attr *props)
144{
145 struct ib_smp *in_mad = NULL;
146 struct ib_smp *out_mad = NULL;
147 int err = -ENOMEM;
148
149 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
150 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
151 if (!in_mad || !out_mad)
152 goto out;
153
154 memset(props, 0, sizeof *props);
155
156 init_query_mad(in_mad);
157 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
158 in_mad->attr_mod = cpu_to_be32(port);
159
160 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
161 if (err)
162 goto out;
163
164 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16));
165 props->lmc = out_mad->data[34] & 0x7;
166 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18));
167 props->sm_sl = out_mad->data[36] & 0xf;
168 props->state = out_mad->data[32] & 0xf;
169 props->phys_state = out_mad->data[33] >> 4;
170 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20));
171 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len;
172 props->max_msg_sz = 0x80000000;
173 props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len;
174 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46));
175 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48));
176 props->active_width = out_mad->data[31] & 0xf;
177 props->active_speed = out_mad->data[35] >> 4;
178 props->max_mtu = out_mad->data[41] & 0xf;
179 props->active_mtu = out_mad->data[36] >> 4;
180 props->subnet_timeout = out_mad->data[51] & 0x1f;
181 props->max_vl_num = out_mad->data[37] >> 4;
182 props->init_type_reply = out_mad->data[41] >> 4;
183
184out:
185 kfree(in_mad);
186 kfree(out_mad);
187
188 return err;
189}
190
191static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
192 union ib_gid *gid)
193{
194 struct ib_smp *in_mad = NULL;
195 struct ib_smp *out_mad = NULL;
196 int err = -ENOMEM;
197
198 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
199 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
200 if (!in_mad || !out_mad)
201 goto out;
202
203 init_query_mad(in_mad);
204 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO;
205 in_mad->attr_mod = cpu_to_be32(port);
206
207 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
208 if (err)
209 goto out;
210
211 memcpy(gid->raw, out_mad->data + 8, 8);
212
213 init_query_mad(in_mad);
214 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO;
215 in_mad->attr_mod = cpu_to_be32(index / 8);
216
217 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
218 if (err)
219 goto out;
220
221 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8);
222
223out:
224 kfree(in_mad);
225 kfree(out_mad);
226 return err;
227}
228
229static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
230 u16 *pkey)
231{
232 struct ib_smp *in_mad = NULL;
233 struct ib_smp *out_mad = NULL;
234 int err = -ENOMEM;
235
236 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
237 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
238 if (!in_mad || !out_mad)
239 goto out;
240
241 init_query_mad(in_mad);
242 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE;
243 in_mad->attr_mod = cpu_to_be32(index / 32);
244
245 err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad);
246 if (err)
247 goto out;
248
249 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]);
250
251out:
252 kfree(in_mad);
253 kfree(out_mad);
254 return err;
255}
256
257static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask,
258 struct ib_device_modify *props)
259{
260 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC)
261 return -EOPNOTSUPP;
262
263 if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
264 spin_lock(&to_mdev(ibdev)->sm_lock);
265 memcpy(ibdev->node_desc, props->node_desc, 64);
266 spin_unlock(&to_mdev(ibdev)->sm_lock);
267 }
268
269 return 0;
270}
271
272static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols,
273 u32 cap_mask)
274{
275 struct mlx4_cmd_mailbox *mailbox;
276 int err;
277
278 mailbox = mlx4_alloc_cmd_mailbox(dev->dev);
279 if (IS_ERR(mailbox))
280 return PTR_ERR(mailbox);
281
282 memset(mailbox->buf, 0, 256);
283 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6;
284 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask);
285
286 err = mlx4_cmd(dev->dev, mailbox->dma, port, 0, MLX4_CMD_SET_PORT,
287 MLX4_CMD_TIME_CLASS_B);
288
289 mlx4_free_cmd_mailbox(dev->dev, mailbox);
290 return err;
291}
292
293static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask,
294 struct ib_port_modify *props)
295{
296 struct ib_port_attr attr;
297 u32 cap_mask;
298 int err;
299
300 mutex_lock(&to_mdev(ibdev)->cap_mask_mutex);
301
302 err = mlx4_ib_query_port(ibdev, port, &attr);
303 if (err)
304 goto out;
305
306 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) &
307 ~props->clr_port_cap_mask;
308
309 err = mlx4_SET_PORT(to_mdev(ibdev), port,
310 !!(mask & IB_PORT_RESET_QKEY_CNTR),
311 cap_mask);
312
313out:
314 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex);
315 return err;
316}
317
318static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev,
319 struct ib_udata *udata)
320{
321 struct mlx4_ib_dev *dev = to_mdev(ibdev);
322 struct mlx4_ib_ucontext *context;
323 struct mlx4_ib_alloc_ucontext_resp resp;
324 int err;
325
326 resp.qp_tab_size = dev->dev->caps.num_qps;
327 resp.bf_reg_size = dev->dev->caps.bf_reg_size;
328 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page;
329
330 context = kmalloc(sizeof *context, GFP_KERNEL);
331 if (!context)
332 return ERR_PTR(-ENOMEM);
333
334 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar);
335 if (err) {
336 kfree(context);
337 return ERR_PTR(err);
338 }
339
340 INIT_LIST_HEAD(&context->db_page_list);
341 mutex_init(&context->db_page_mutex);
342
343 err = ib_copy_to_udata(udata, &resp, sizeof resp);
344 if (err) {
345 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar);
346 kfree(context);
347 return ERR_PTR(-EFAULT);
348 }
349
350 return &context->ibucontext;
351}
352
353static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
354{
355 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext);
356
357 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar);
358 kfree(context);
359
360 return 0;
361}
362
363static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
364{
365 struct mlx4_ib_dev *dev = to_mdev(context->device);
366
367 if (vma->vm_end - vma->vm_start != PAGE_SIZE)
368 return -EINVAL;
369
370 if (vma->vm_pgoff == 0) {
371 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
372
373 if (io_remap_pfn_range(vma, vma->vm_start,
374 to_mucontext(context)->uar.pfn,
375 PAGE_SIZE, vma->vm_page_prot))
376 return -EAGAIN;
377 } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) {
378 /* FIXME want pgprot_writecombine() for BlueFlame pages */
379 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
380
381 if (io_remap_pfn_range(vma, vma->vm_start,
382 to_mucontext(context)->uar.pfn +
383 dev->dev->caps.num_uars,
384 PAGE_SIZE, vma->vm_page_prot))
385 return -EAGAIN;
386 } else
387 return -EINVAL;
388
389 return 0;
390}
391
392static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev,
393 struct ib_ucontext *context,
394 struct ib_udata *udata)
395{
396 struct mlx4_ib_pd *pd;
397 int err;
398
399 pd = kmalloc(sizeof *pd, GFP_KERNEL);
400 if (!pd)
401 return ERR_PTR(-ENOMEM);
402
403 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn);
404 if (err) {
405 kfree(pd);
406 return ERR_PTR(err);
407 }
408
409 if (context)
410 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) {
411 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn);
412 kfree(pd);
413 return ERR_PTR(-EFAULT);
414 }
415
416 return &pd->ibpd;
417}
418
419static int mlx4_ib_dealloc_pd(struct ib_pd *pd)
420{
421 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn);
422 kfree(pd);
423
424 return 0;
425}
426
427static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
428{
429 return mlx4_multicast_attach(to_mdev(ibqp->device)->dev,
430 &to_mqp(ibqp)->mqp, gid->raw);
431}
432
433static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
434{
435 return mlx4_multicast_detach(to_mdev(ibqp->device)->dev,
436 &to_mqp(ibqp)->mqp, gid->raw);
437}
438
439static int init_node_data(struct mlx4_ib_dev *dev)
440{
441 struct ib_smp *in_mad = NULL;
442 struct ib_smp *out_mad = NULL;
443 int err = -ENOMEM;
444
445 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL);
446 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL);
447 if (!in_mad || !out_mad)
448 goto out;
449
450 init_query_mad(in_mad);
451 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC;
452
453 err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
454 if (err)
455 goto out;
456
457 memcpy(dev->ib_dev.node_desc, out_mad->data, 64);
458
459 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO;
460
461 err = mlx4_MAD_IFC(dev, 1, 1, 1, NULL, NULL, in_mad, out_mad);
462 if (err)
463 goto out;
464
465 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8);
466
467out:
468 kfree(in_mad);
469 kfree(out_mad);
470 return err;
471}
472
473static void *mlx4_ib_add(struct mlx4_dev *dev)
474{
475 struct mlx4_ib_dev *ibdev;
476
477 ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev);
478 if (!ibdev) {
479 dev_err(&dev->pdev->dev, "Device struct alloc failed\n");
480 return NULL;
481 }
482
483 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
484 goto err_dealloc;
485
486 if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
487 goto err_pd;
488
489 ibdev->uar_map = ioremap(ibdev->priv_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
490 if (!ibdev->uar_map)
491 goto err_uar;
492
493 INIT_LIST_HEAD(&ibdev->pgdir_list);
494 mutex_init(&ibdev->pgdir_mutex);
495
496 ibdev->dev = dev;
497
498 strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX);
499 ibdev->ib_dev.owner = THIS_MODULE;
500 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA;
501 ibdev->ib_dev.phys_port_cnt = dev->caps.num_ports;
502 ibdev->ib_dev.num_comp_vectors = 1;
503 ibdev->ib_dev.dma_device = &dev->pdev->dev;
504
505 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION;
506 ibdev->ib_dev.uverbs_cmd_mask =
507 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
508 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
509 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
510 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
511 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
512 (1ull << IB_USER_VERBS_CMD_REG_MR) |
513 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
514 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
515 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
516 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
517 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
518 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
519 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
520 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
521 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
522 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) |
523 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) |
524 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ);
525
526 ibdev->ib_dev.query_device = mlx4_ib_query_device;
527 ibdev->ib_dev.query_port = mlx4_ib_query_port;
528 ibdev->ib_dev.query_gid = mlx4_ib_query_gid;
529 ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey;
530 ibdev->ib_dev.modify_device = mlx4_ib_modify_device;
531 ibdev->ib_dev.modify_port = mlx4_ib_modify_port;
532 ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext;
533 ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext;
534 ibdev->ib_dev.mmap = mlx4_ib_mmap;
535 ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd;
536 ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd;
537 ibdev->ib_dev.create_ah = mlx4_ib_create_ah;
538 ibdev->ib_dev.query_ah = mlx4_ib_query_ah;
539 ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah;
540 ibdev->ib_dev.create_srq = mlx4_ib_create_srq;
541 ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq;
542 ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq;
543 ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv;
544 ibdev->ib_dev.create_qp = mlx4_ib_create_qp;
545 ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp;
546 ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp;
547 ibdev->ib_dev.post_send = mlx4_ib_post_send;
548 ibdev->ib_dev.post_recv = mlx4_ib_post_recv;
549 ibdev->ib_dev.create_cq = mlx4_ib_create_cq;
550 ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq;
551 ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq;
552 ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq;
553 ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr;
554 ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr;
555 ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr;
556 ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach;
557 ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach;
558 ibdev->ib_dev.process_mad = mlx4_ib_process_mad;
559
560 if (init_node_data(ibdev))
561 goto err_map;
562
563 spin_lock_init(&ibdev->sm_lock);
564 mutex_init(&ibdev->cap_mask_mutex);
565
566 if (ib_register_device(&ibdev->ib_dev))
567 goto err_map;
568
569 if (mlx4_ib_mad_init(ibdev))
570 goto err_reg;
571
572 return ibdev;
573
574err_reg:
575 ib_unregister_device(&ibdev->ib_dev);
576
577err_map:
578 iounmap(ibdev->uar_map);
579
580err_uar:
581 mlx4_uar_free(dev, &ibdev->priv_uar);
582
583err_pd:
584 mlx4_pd_free(dev, ibdev->priv_pdn);
585
586err_dealloc:
587 ib_dealloc_device(&ibdev->ib_dev);
588
589 return NULL;
590}
591
592static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
593{
594 struct mlx4_ib_dev *ibdev = ibdev_ptr;
595 int p;
596
597 for (p = 1; p <= dev->caps.num_ports; ++p)
598 mlx4_CLOSE_PORT(dev, p);
599
600 mlx4_ib_mad_cleanup(ibdev);
601 ib_unregister_device(&ibdev->ib_dev);
602 iounmap(ibdev->uar_map);
603 mlx4_uar_free(dev, &ibdev->priv_uar);
604 mlx4_pd_free(dev, ibdev->priv_pdn);
605 ib_dealloc_device(&ibdev->ib_dev);
606}
607
608static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr,
609 enum mlx4_dev_event event, int subtype,
610 int port)
611{
612 struct ib_event ibev;
613
614 switch (event) {
615 case MLX4_EVENT_TYPE_PORT_CHANGE:
616 ibev.event = subtype == MLX4_PORT_CHANGE_SUBTYPE_ACTIVE ?
617 IB_EVENT_PORT_ACTIVE : IB_EVENT_PORT_ERR;
618 break;
619
620 case MLX4_EVENT_TYPE_LOCAL_CATAS_ERROR:
621 ibev.event = IB_EVENT_DEVICE_FATAL;
622 break;
623
624 default:
625 return;
626 }
627
628 ibev.device = ibdev_ptr;
629 ibev.element.port_num = port;
630
631 ib_dispatch_event(&ibev);
632}
633
634static struct mlx4_interface mlx4_ib_interface = {
635 .add = mlx4_ib_add,
636 .remove = mlx4_ib_remove,
637 .event = mlx4_ib_event
638};
639
640static int __init mlx4_ib_init(void)
641{
642 return mlx4_register_interface(&mlx4_ib_interface);
643}
644
645static void __exit mlx4_ib_cleanup(void)
646{
647 mlx4_unregister_interface(&mlx4_ib_interface);
648}
649
650module_init(mlx4_ib_init);
651module_exit(mlx4_ib_cleanup);
diff --git a/drivers/infiniband/hw/mlx4/mlx4_ib.h b/drivers/infiniband/hw/mlx4/mlx4_ib.h
new file mode 100644
index 000000000000..93dac71f3230
--- /dev/null
+++ b/drivers/infiniband/hw/mlx4/mlx4_ib.h
@@ -0,0 +1,285 @@
1/*
2 * Copyright (c) 2006, 2007 Cisco Systems. 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
33#ifndef MLX4_IB_H
34#define MLX4_IB_H
35
36#include <linux/compiler.h>
37#include <linux/list.h>
38
39#include <rdma/ib_verbs.h>
40#include <rdma/ib_umem.h>
41
42#include <linux/mlx4/device.h>
43#include <linux/mlx4/doorbell.h>
44
45enum {
46 MLX4_IB_DB_PER_PAGE = PAGE_SIZE / 4
47};
48
49struct mlx4_ib_db_pgdir;
50struct mlx4_ib_user_db_page;
51
52struct mlx4_ib_db {
53 __be32 *db;
54 union {
55 struct mlx4_ib_db_pgdir *pgdir;
56 struct mlx4_ib_user_db_page *user_page;
57 } u;
58 dma_addr_t dma;
59 int index;
60 int order;
61};
62
63struct mlx4_ib_ucontext {
64 struct ib_ucontext ibucontext;
65 struct mlx4_uar uar;
66 struct list_head db_page_list;
67 struct mutex db_page_mutex;
68};
69
70struct mlx4_ib_pd {
71 struct ib_pd ibpd;
72 u32 pdn;
73};
74
75struct mlx4_ib_cq_buf {
76 struct mlx4_buf buf;
77 struct mlx4_mtt mtt;
78};
79
80struct mlx4_ib_cq {
81 struct ib_cq ibcq;
82 struct mlx4_cq mcq;
83 struct mlx4_ib_cq_buf buf;
84 struct mlx4_ib_db db;
85 spinlock_t lock;
86 struct ib_umem *umem;
87};
88
89struct mlx4_ib_mr {
90 struct ib_mr ibmr;
91 struct mlx4_mr mmr;
92 struct ib_umem *umem;
93};
94
95struct mlx4_ib_wq {
96 u64 *wrid;
97 spinlock_t lock;
98 int max;
99 int max_gs;
100 int offset;
101 int wqe_shift;
102 unsigned head;
103 unsigned tail;
104};
105
106struct mlx4_ib_qp {
107 struct ib_qp ibqp;
108 struct mlx4_qp mqp;
109 struct mlx4_buf buf;
110
111 struct mlx4_ib_db db;
112 struct mlx4_ib_wq rq;
113
114 u32 doorbell_qpn;
115 __be32 sq_signal_bits;
116 struct mlx4_ib_wq sq;
117
118 struct ib_umem *umem;
119 struct mlx4_mtt mtt;
120 int buf_size;
121 struct mutex mutex;
122 u8 port;
123 u8 alt_port;
124 u8 atomic_rd_en;
125 u8 resp_depth;
126 u8 state;
127};
128
129struct mlx4_ib_srq {
130 struct ib_srq ibsrq;
131 struct mlx4_srq msrq;
132 struct mlx4_buf buf;
133 struct mlx4_ib_db db;
134 u64 *wrid;
135 spinlock_t lock;
136 int head;
137 int tail;
138 u16 wqe_ctr;
139 struct ib_umem *umem;
140 struct mlx4_mtt mtt;
141 struct mutex mutex;
142};
143
144struct mlx4_ib_ah {
145 struct ib_ah ibah;
146 struct mlx4_av av;
147};
148
149struct mlx4_ib_dev {
150 struct ib_device ib_dev;
151 struct mlx4_dev *dev;
152 void __iomem *uar_map;
153
154 struct list_head pgdir_list;
155 struct mutex pgdir_mutex;
156
157 struct mlx4_uar priv_uar;
158 u32 priv_pdn;
159 MLX4_DECLARE_DOORBELL_LOCK(uar_lock);
160
161 struct ib_mad_agent *send_agent[MLX4_MAX_PORTS][2];
162 struct ib_ah *sm_ah[MLX4_MAX_PORTS];
163 spinlock_t sm_lock;
164
165 struct mutex cap_mask_mutex;
166};
167
168static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev)
169{
170 return container_of(ibdev, struct mlx4_ib_dev, ib_dev);
171}
172
173static inline struct mlx4_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
174{
175 return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext);
176}
177
178static inline struct mlx4_ib_pd *to_mpd(struct ib_pd *ibpd)
179{
180 return container_of(ibpd, struct mlx4_ib_pd, ibpd);
181}
182
183static inline struct mlx4_ib_cq *to_mcq(struct ib_cq *ibcq)
184{
185 return container_of(ibcq, struct mlx4_ib_cq, ibcq);
186}
187
188static inline struct mlx4_ib_cq *to_mibcq(struct mlx4_cq *mcq)
189{
190 return container_of(mcq, struct mlx4_ib_cq, mcq);
191}
192
193static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr)
194{
195 return container_of(ibmr, struct mlx4_ib_mr, ibmr);
196}
197
198static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp)
199{
200 return container_of(ibqp, struct mlx4_ib_qp, ibqp);
201}
202
203static inline struct mlx4_ib_qp *to_mibqp(struct mlx4_qp *mqp)
204{
205 return container_of(mqp, struct mlx4_ib_qp, mqp);
206}
207
208static inline struct mlx4_ib_srq *to_msrq(struct ib_srq *ibsrq)
209{
210 return container_of(ibsrq, struct mlx4_ib_srq, ibsrq);
211}
212
213static inline struct mlx4_ib_srq *to_mibsrq(struct mlx4_srq *msrq)
214{
215 return container_of(msrq, struct mlx4_ib_srq, msrq);
216}
217
218static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah)
219{
220 return container_of(ibah, struct mlx4_ib_ah, ibah);
221}
222
223int mlx4_ib_db_alloc(struct mlx4_ib_dev *dev, struct mlx4_ib_db *db, int order);
224void mlx4_ib_db_free(struct mlx4_ib_dev *dev, struct mlx4_ib_db *db);
225int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt,
226 struct mlx4_ib_db *db);
227void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_ib_db *db);
228
229struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc);
230int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt,
231 struct ib_umem *umem);
232struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
233 u64 virt_addr, int access_flags,
234 struct ib_udata *udata);
235int mlx4_ib_dereg_mr(struct ib_mr *mr);
236
237struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector,
238 struct ib_ucontext *context,
239 struct ib_udata *udata);
240int mlx4_ib_destroy_cq(struct ib_cq *cq);
241int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
242int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
243void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
244void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
245
246struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
247int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr);
248int mlx4_ib_destroy_ah(struct ib_ah *ah);
249
250struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
251 struct ib_srq_init_attr *init_attr,
252 struct ib_udata *udata);
253int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
254 enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
255int mlx4_ib_destroy_srq(struct ib_srq *srq);
256void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index);
257int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
258 struct ib_recv_wr **bad_wr);
259
260struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd,
261 struct ib_qp_init_attr *init_attr,
262 struct ib_udata *udata);
263int mlx4_ib_destroy_qp(struct ib_qp *qp);
264int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
265 int attr_mask, struct ib_udata *udata);
266int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
267 struct ib_send_wr **bad_wr);
268int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
269 struct ib_recv_wr **bad_wr);
270
271int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int ignore_mkey, int ignore_bkey,
272 int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
273 void *in_mad, void *response_mad);
274int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
275 struct ib_wc *in_wc, struct ib_grh *in_grh,
276 struct ib_mad *in_mad, struct ib_mad *out_mad);
277int mlx4_ib_mad_init(struct mlx4_ib_dev *dev);
278void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev);
279
280static inline int mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah)
281{
282 return !!(ah->av.g_slid & 0x80);
283}
284
285#endif /* MLX4_IB_H */
diff --git a/drivers/infiniband/hw/mlx4/mr.c b/drivers/infiniband/hw/mlx4/mr.c
new file mode 100644
index 000000000000..85ae906f1d12
--- /dev/null
+++ b/drivers/infiniband/hw/mlx4/mr.c
@@ -0,0 +1,184 @@
1/*
2 * Copyright (c) 2007 Cisco Systems, 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
33#include "mlx4_ib.h"
34
35static u32 convert_access(int acc)
36{
37 return (acc & IB_ACCESS_REMOTE_ATOMIC ? MLX4_PERM_ATOMIC : 0) |
38 (acc & IB_ACCESS_REMOTE_WRITE ? MLX4_PERM_REMOTE_WRITE : 0) |
39 (acc & IB_ACCESS_REMOTE_READ ? MLX4_PERM_REMOTE_READ : 0) |
40 (acc & IB_ACCESS_LOCAL_WRITE ? MLX4_PERM_LOCAL_WRITE : 0) |
41 MLX4_PERM_LOCAL_READ;
42}
43
44struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc)
45{
46 struct mlx4_ib_mr *mr;
47 int err;
48
49 mr = kmalloc(sizeof *mr, GFP_KERNEL);
50 if (!mr)
51 return ERR_PTR(-ENOMEM);
52
53 err = mlx4_mr_alloc(to_mdev(pd->device)->dev, to_mpd(pd)->pdn, 0,
54 ~0ull, convert_access(acc), 0, 0, &mr->mmr);
55 if (err)
56 goto err_free;
57
58 err = mlx4_mr_enable(to_mdev(pd->device)->dev, &mr->mmr);
59 if (err)
60 goto err_mr;
61
62 mr->ibmr.rkey = mr->ibmr.lkey = mr->mmr.key;
63 mr->umem = NULL;
64
65 return &mr->ibmr;
66
67err_mr:
68 mlx4_mr_free(to_mdev(pd->device)->dev, &mr->mmr);
69
70err_free:
71 kfree(mr);
72
73 return ERR_PTR(err);
74}
75
76int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt,
77 struct ib_umem *umem)
78{
79 u64 *pages;
80 struct ib_umem_chunk *chunk;
81 int i, j, k;
82 int n;
83 int len;
84 int err = 0;
85
86 pages = (u64 *) __get_free_page(GFP_KERNEL);
87 if (!pages)
88 return -ENOMEM;
89
90 i = n = 0;
91
92 list_for_each_entry(chunk, &umem->chunk_list, list)
93 for (j = 0; j < chunk->nmap; ++j) {
94 len = sg_dma_len(&chunk->page_list[j]) >> mtt->page_shift;
95 for (k = 0; k < len; ++k) {
96 pages[i++] = sg_dma_address(&chunk->page_list[j]) +
97 umem->page_size * k;
98 /*
99 * Be friendly to WRITE_MTT firmware
100 * command, and pass it chunks of
101 * appropriate size.
102 */
103 if (i == PAGE_SIZE / sizeof (u64) - 2) {
104 err = mlx4_write_mtt(dev->dev, mtt, n,
105 i, pages);
106 if (err)
107 goto out;
108 n += i;
109 i = 0;
110 }
111 }
112 }
113
114 if (i)
115 err = mlx4_write_mtt(dev->dev, mtt, n, i, pages);
116
117out:
118 free_page((unsigned long) pages);
119 return err;
120}
121
122struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
123 u64 virt_addr, int access_flags,
124 struct ib_udata *udata)
125{
126 struct mlx4_ib_dev *dev = to_mdev(pd->device);
127 struct mlx4_ib_mr *mr;
128 int shift;
129 int err;
130 int n;
131
132 mr = kmalloc(sizeof *mr, GFP_KERNEL);
133 if (!mr)
134 return ERR_PTR(-ENOMEM);
135
136 mr->umem = ib_umem_get(pd->uobject->context, start, length, access_flags);
137 if (IS_ERR(mr->umem)) {
138 err = PTR_ERR(mr->umem);
139 goto err_free;
140 }
141
142 n = ib_umem_page_count(mr->umem);
143 shift = ilog2(mr->umem->page_size);
144
145 err = mlx4_mr_alloc(dev->dev, to_mpd(pd)->pdn, virt_addr, length,
146 convert_access(access_flags), n, shift, &mr->mmr);
147 if (err)
148 goto err_umem;
149
150 err = mlx4_ib_umem_write_mtt(dev, &mr->mmr.mtt, mr->umem);
151 if (err)
152 goto err_mr;
153
154 err = mlx4_mr_enable(dev->dev, &mr->mmr);
155 if (err)
156 goto err_mr;
157
158 mr->ibmr.rkey = mr->ibmr.lkey = mr->mmr.key;
159
160 return &mr->ibmr;
161
162err_mr:
163 mlx4_mr_free(to_mdev(pd->device)->dev, &mr->mmr);
164
165err_umem:
166 ib_umem_release(mr->umem);
167
168err_free:
169 kfree(mr);
170
171 return ERR_PTR(err);
172}
173
174int mlx4_ib_dereg_mr(struct ib_mr *ibmr)
175{
176 struct mlx4_ib_mr *mr = to_mmr(ibmr);
177
178 mlx4_mr_free(to_mdev(ibmr->device)->dev, &mr->mmr);
179 if (mr->umem)
180 ib_umem_release(mr->umem);
181 kfree(mr);
182
183 return 0;
184}
diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c
new file mode 100644
index 000000000000..5cd706908450
--- /dev/null
+++ b/drivers/infiniband/hw/mlx4/qp.c
@@ -0,0 +1,1294 @@
1/*
2 * Copyright (c) 2007 Cisco Systems, 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
33#include <rdma/ib_cache.h>
34#include <rdma/ib_pack.h>
35
36#include <linux/mlx4/qp.h>
37
38#include "mlx4_ib.h"
39#include "user.h"
40
41enum {
42 MLX4_IB_ACK_REQ_FREQ = 8,
43};
44
45enum {
46 MLX4_IB_DEFAULT_SCHED_QUEUE = 0x83,
47 MLX4_IB_DEFAULT_QP0_SCHED_QUEUE = 0x3f
48};
49
50enum {
51 /*
52 * Largest possible UD header: send with GRH and immediate data.
53 */
54 MLX4_IB_UD_HEADER_SIZE = 72
55};
56
57struct mlx4_ib_sqp {
58 struct mlx4_ib_qp qp;
59 int pkey_index;
60 u32 qkey;
61 u32 send_psn;
62 struct ib_ud_header ud_header;
63 u8 header_buf[MLX4_IB_UD_HEADER_SIZE];
64};
65
66static const __be32 mlx4_ib_opcode[] = {
67 [IB_WR_SEND] = __constant_cpu_to_be32(MLX4_OPCODE_SEND),
68 [IB_WR_SEND_WITH_IMM] = __constant_cpu_to_be32(MLX4_OPCODE_SEND_IMM),
69 [IB_WR_RDMA_WRITE] = __constant_cpu_to_be32(MLX4_OPCODE_RDMA_WRITE),
70 [IB_WR_RDMA_WRITE_WITH_IMM] = __constant_cpu_to_be32(MLX4_OPCODE_RDMA_WRITE_IMM),
71 [IB_WR_RDMA_READ] = __constant_cpu_to_be32(MLX4_OPCODE_RDMA_READ),
72 [IB_WR_ATOMIC_CMP_AND_SWP] = __constant_cpu_to_be32(MLX4_OPCODE_ATOMIC_CS),
73 [IB_WR_ATOMIC_FETCH_AND_ADD] = __constant_cpu_to_be32(MLX4_OPCODE_ATOMIC_FA),
74};
75
76static struct mlx4_ib_sqp *to_msqp(struct mlx4_ib_qp *mqp)
77{
78 return container_of(mqp, struct mlx4_ib_sqp, qp);
79}
80
81static int is_sqp(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp)
82{
83 return qp->mqp.qpn >= dev->dev->caps.sqp_start &&
84 qp->mqp.qpn <= dev->dev->caps.sqp_start + 3;
85}
86
87static int is_qp0(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp)
88{
89 return qp->mqp.qpn >= dev->dev->caps.sqp_start &&
90 qp->mqp.qpn <= dev->dev->caps.sqp_start + 1;
91}
92
93static void *get_wqe(struct mlx4_ib_qp *qp, int offset)
94{
95 if (qp->buf.nbufs == 1)
96 return qp->buf.u.direct.buf + offset;
97 else
98 return qp->buf.u.page_list[offset >> PAGE_SHIFT].buf +
99 (offset & (PAGE_SIZE - 1));
100}
101
102static void *get_recv_wqe(struct mlx4_ib_qp *qp, int n)
103{
104 return get_wqe(qp, qp->rq.offset + (n << qp->rq.wqe_shift));
105}
106
107static void *get_send_wqe(struct mlx4_ib_qp *qp, int n)
108{
109 return get_wqe(qp, qp->sq.offset + (n << qp->sq.wqe_shift));
110}
111
112static void mlx4_ib_qp_event(struct mlx4_qp *qp, enum mlx4_event type)
113{
114 struct ib_event event;
115 struct ib_qp *ibqp = &to_mibqp(qp)->ibqp;
116
117 if (type == MLX4_EVENT_TYPE_PATH_MIG)
118 to_mibqp(qp)->port = to_mibqp(qp)->alt_port;
119
120 if (ibqp->event_handler) {
121 event.device = ibqp->device;
122 event.element.qp = ibqp;
123 switch (type) {
124 case MLX4_EVENT_TYPE_PATH_MIG:
125 event.event = IB_EVENT_PATH_MIG;
126 break;
127 case MLX4_EVENT_TYPE_COMM_EST:
128 event.event = IB_EVENT_COMM_EST;
129 break;
130 case MLX4_EVENT_TYPE_SQ_DRAINED:
131 event.event = IB_EVENT_SQ_DRAINED;
132 break;
133 case MLX4_EVENT_TYPE_SRQ_QP_LAST_WQE:
134 event.event = IB_EVENT_QP_LAST_WQE_REACHED;
135 break;
136 case MLX4_EVENT_TYPE_WQ_CATAS_ERROR:
137 event.event = IB_EVENT_QP_FATAL;
138 break;
139 case MLX4_EVENT_TYPE_PATH_MIG_FAILED:
140 event.event = IB_EVENT_PATH_MIG_ERR;
141 break;
142 case MLX4_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
143 event.event = IB_EVENT_QP_REQ_ERR;
144 break;
145 case MLX4_EVENT_TYPE_WQ_ACCESS_ERROR:
146 event.event = IB_EVENT_QP_ACCESS_ERR;
147 break;
148 default:
149 printk(KERN_WARNING "mlx4_ib: Unexpected event type %d "
150 "on QP %06x\n", type, qp->qpn);
151 return;
152 }
153
154 ibqp->event_handler(&event, ibqp->qp_context);
155 }
156}
157
158static int send_wqe_overhead(enum ib_qp_type type)
159{
160 /*
161 * UD WQEs must have a datagram segment.
162 * RC and UC WQEs might have a remote address segment.
163 * MLX WQEs need two extra inline data segments (for the UD
164 * header and space for the ICRC).
165 */
166 switch (type) {
167 case IB_QPT_UD:
168 return sizeof (struct mlx4_wqe_ctrl_seg) +
169 sizeof (struct mlx4_wqe_datagram_seg);
170 case IB_QPT_UC:
171 return sizeof (struct mlx4_wqe_ctrl_seg) +
172 sizeof (struct mlx4_wqe_raddr_seg);
173 case IB_QPT_RC:
174 return sizeof (struct mlx4_wqe_ctrl_seg) +
175 sizeof (struct mlx4_wqe_atomic_seg) +
176 sizeof (struct mlx4_wqe_raddr_seg);
177 case IB_QPT_SMI:
178 case IB_QPT_GSI:
179 return sizeof (struct mlx4_wqe_ctrl_seg) +
180 ALIGN(MLX4_IB_UD_HEADER_SIZE +
181 sizeof (struct mlx4_wqe_inline_seg),
182 sizeof (struct mlx4_wqe_data_seg)) +
183 ALIGN(4 +
184 sizeof (struct mlx4_wqe_inline_seg),
185 sizeof (struct mlx4_wqe_data_seg));
186 default:
187 return sizeof (struct mlx4_wqe_ctrl_seg);
188 }
189}
190
191static int set_qp_size(struct mlx4_ib_dev *dev, struct ib_qp_cap *cap,
192 enum ib_qp_type type, struct mlx4_ib_qp *qp)
193{
194 /* Sanity check QP size before proceeding */
195 if (cap->max_send_wr > dev->dev->caps.max_wqes ||
196 cap->max_recv_wr > dev->dev->caps.max_wqes ||
197 cap->max_send_sge > dev->dev->caps.max_sq_sg ||
198 cap->max_recv_sge > dev->dev->caps.max_rq_sg ||
199 cap->max_inline_data + send_wqe_overhead(type) +
200 sizeof (struct mlx4_wqe_inline_seg) > dev->dev->caps.max_sq_desc_sz)
201 return -EINVAL;
202
203 /*
204 * For MLX transport we need 2 extra S/G entries:
205 * one for the header and one for the checksum at the end
206 */
207 if ((type == IB_QPT_SMI || type == IB_QPT_GSI) &&
208 cap->max_send_sge + 2 > dev->dev->caps.max_sq_sg)
209 return -EINVAL;
210
211 qp->rq.max = cap->max_recv_wr ? roundup_pow_of_two(cap->max_recv_wr) : 0;
212 qp->sq.max = cap->max_send_wr ? roundup_pow_of_two(cap->max_send_wr) : 0;
213
214 qp->rq.wqe_shift = ilog2(roundup_pow_of_two(cap->max_recv_sge *
215 sizeof (struct mlx4_wqe_data_seg)));
216 qp->rq.max_gs = (1 << qp->rq.wqe_shift) / sizeof (struct mlx4_wqe_data_seg);
217
218 qp->sq.wqe_shift = ilog2(roundup_pow_of_two(max(cap->max_send_sge *
219 sizeof (struct mlx4_wqe_data_seg),
220 cap->max_inline_data +
221 sizeof (struct mlx4_wqe_inline_seg)) +
222 send_wqe_overhead(type)));
223 qp->sq.max_gs = ((1 << qp->sq.wqe_shift) - send_wqe_overhead(type)) /
224 sizeof (struct mlx4_wqe_data_seg);
225
226 qp->buf_size = (qp->rq.max << qp->rq.wqe_shift) +
227 (qp->sq.max << qp->sq.wqe_shift);
228 if (qp->rq.wqe_shift > qp->sq.wqe_shift) {
229 qp->rq.offset = 0;
230 qp->sq.offset = qp->rq.max << qp->rq.wqe_shift;
231 } else {
232 qp->rq.offset = qp->sq.max << qp->sq.wqe_shift;
233 qp->sq.offset = 0;
234 }
235
236 cap->max_send_wr = qp->sq.max;
237 cap->max_recv_wr = qp->rq.max;
238 cap->max_send_sge = qp->sq.max_gs;
239 cap->max_recv_sge = qp->rq.max_gs;
240 cap->max_inline_data = (1 << qp->sq.wqe_shift) - send_wqe_overhead(type) -
241 sizeof (struct mlx4_wqe_inline_seg);
242
243 return 0;
244}
245
246static int create_qp_common(struct mlx4_ib_dev *dev, struct ib_pd *pd,
247 struct ib_qp_init_attr *init_attr,
248 struct ib_udata *udata, int sqpn, struct mlx4_ib_qp *qp)
249{
250 struct mlx4_wqe_ctrl_seg *ctrl;
251 int err;
252 int i;
253
254 mutex_init(&qp->mutex);
255 spin_lock_init(&qp->sq.lock);
256 spin_lock_init(&qp->rq.lock);
257
258 qp->state = IB_QPS_RESET;
259 qp->atomic_rd_en = 0;
260 qp->resp_depth = 0;
261
262 qp->rq.head = 0;
263 qp->rq.tail = 0;
264 qp->sq.head = 0;
265 qp->sq.tail = 0;
266
267 err = set_qp_size(dev, &init_attr->cap, init_attr->qp_type, qp);
268 if (err)
269 goto err;
270
271 if (pd->uobject) {
272 struct mlx4_ib_create_qp ucmd;
273
274 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
275 err = -EFAULT;
276 goto err;
277 }
278
279 qp->umem = ib_umem_get(pd->uobject->context, ucmd.buf_addr,
280 qp->buf_size, 0);
281 if (IS_ERR(qp->umem)) {
282 err = PTR_ERR(qp->umem);
283 goto err;
284 }
285
286 err = mlx4_mtt_init(dev->dev, ib_umem_page_count(qp->umem),
287 ilog2(qp->umem->page_size), &qp->mtt);
288 if (err)
289 goto err_buf;
290
291 err = mlx4_ib_umem_write_mtt(dev, &qp->mtt, qp->umem);
292 if (err)
293 goto err_mtt;
294
295 err = mlx4_ib_db_map_user(to_mucontext(pd->uobject->context),
296 ucmd.db_addr, &qp->db);
297 if (err)
298 goto err_mtt;
299 } else {
300 err = mlx4_ib_db_alloc(dev, &qp->db, 0);
301 if (err)
302 goto err;
303
304 *qp->db.db = 0;
305
306 if (mlx4_buf_alloc(dev->dev, qp->buf_size, PAGE_SIZE * 2, &qp->buf)) {
307 err = -ENOMEM;
308 goto err_db;
309 }
310
311 err = mlx4_mtt_init(dev->dev, qp->buf.npages, qp->buf.page_shift,
312 &qp->mtt);
313 if (err)
314 goto err_buf;
315
316 err = mlx4_buf_write_mtt(dev->dev, &qp->mtt, &qp->buf);
317 if (err)
318 goto err_mtt;
319
320 for (i = 0; i < qp->sq.max; ++i) {
321 ctrl = get_send_wqe(qp, i);
322 ctrl->owner_opcode = cpu_to_be32(1 << 31);
323 }
324
325 qp->sq.wrid = kmalloc(qp->sq.max * sizeof (u64), GFP_KERNEL);
326 qp->rq.wrid = kmalloc(qp->rq.max * sizeof (u64), GFP_KERNEL);
327
328 if (!qp->sq.wrid || !qp->rq.wrid) {
329 err = -ENOMEM;
330 goto err_wrid;
331 }
332
333 /* We don't support inline sends for kernel QPs (yet) */
334 init_attr->cap.max_inline_data = 0;
335 }
336
337 err = mlx4_qp_alloc(dev->dev, sqpn, &qp->mqp);
338 if (err)
339 goto err_wrid;
340
341 /*
342 * Hardware wants QPN written in big-endian order (after
343 * shifting) for send doorbell. Precompute this value to save
344 * a little bit when posting sends.
345 */
346 qp->doorbell_qpn = swab32(qp->mqp.qpn << 8);
347
348 if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR)
349 qp->sq_signal_bits = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE);
350 else
351 qp->sq_signal_bits = 0;
352
353 qp->mqp.event = mlx4_ib_qp_event;
354
355 return 0;
356
357err_wrid:
358 if (pd->uobject)
359 mlx4_ib_db_unmap_user(to_mucontext(pd->uobject->context), &qp->db);
360 else {
361 kfree(qp->sq.wrid);
362 kfree(qp->rq.wrid);
363 }
364
365err_mtt:
366 mlx4_mtt_cleanup(dev->dev, &qp->mtt);
367
368err_buf:
369 if (pd->uobject)
370 ib_umem_release(qp->umem);
371 else
372 mlx4_buf_free(dev->dev, qp->buf_size, &qp->buf);
373
374err_db:
375 if (!pd->uobject)
376 mlx4_ib_db_free(dev, &qp->db);
377
378err:
379 return err;
380}
381
382static enum mlx4_qp_state to_mlx4_state(enum ib_qp_state state)
383{
384 switch (state) {
385 case IB_QPS_RESET: return MLX4_QP_STATE_RST;
386 case IB_QPS_INIT: return MLX4_QP_STATE_INIT;
387 case IB_QPS_RTR: return MLX4_QP_STATE_RTR;
388 case IB_QPS_RTS: return MLX4_QP_STATE_RTS;
389 case IB_QPS_SQD: return MLX4_QP_STATE_SQD;
390 case IB_QPS_SQE: return MLX4_QP_STATE_SQER;
391 case IB_QPS_ERR: return MLX4_QP_STATE_ERR;
392 default: return -1;
393 }
394}
395
396static void mlx4_ib_lock_cqs(struct mlx4_ib_cq *send_cq, struct mlx4_ib_cq *recv_cq)
397{
398 if (send_cq == recv_cq)
399 spin_lock_irq(&send_cq->lock);
400 else if (send_cq->mcq.cqn < recv_cq->mcq.cqn) {
401 spin_lock_irq(&send_cq->lock);
402 spin_lock_nested(&recv_cq->lock, SINGLE_DEPTH_NESTING);
403 } else {
404 spin_lock_irq(&recv_cq->lock);
405 spin_lock_nested(&send_cq->lock, SINGLE_DEPTH_NESTING);
406 }
407}
408
409static void mlx4_ib_unlock_cqs(struct mlx4_ib_cq *send_cq, struct mlx4_ib_cq *recv_cq)
410{
411 if (send_cq == recv_cq)
412 spin_unlock_irq(&send_cq->lock);
413 else if (send_cq->mcq.cqn < recv_cq->mcq.cqn) {
414 spin_unlock(&recv_cq->lock);
415 spin_unlock_irq(&send_cq->lock);
416 } else {
417 spin_unlock(&send_cq->lock);
418 spin_unlock_irq(&recv_cq->lock);
419 }
420}
421
422static void destroy_qp_common(struct mlx4_ib_dev *dev, struct mlx4_ib_qp *qp,
423 int is_user)
424{
425 struct mlx4_ib_cq *send_cq, *recv_cq;
426
427 if (qp->state != IB_QPS_RESET)
428 if (mlx4_qp_modify(dev->dev, NULL, to_mlx4_state(qp->state),
429 MLX4_QP_STATE_RST, NULL, 0, 0, &qp->mqp))
430 printk(KERN_WARNING "mlx4_ib: modify QP %06x to RESET failed.\n",
431 qp->mqp.qpn);
432
433 send_cq = to_mcq(qp->ibqp.send_cq);
434 recv_cq = to_mcq(qp->ibqp.recv_cq);
435
436 mlx4_ib_lock_cqs(send_cq, recv_cq);
437
438 if (!is_user) {
439 __mlx4_ib_cq_clean(recv_cq, qp->mqp.qpn,
440 qp->ibqp.srq ? to_msrq(qp->ibqp.srq): NULL);
441 if (send_cq != recv_cq)
442 __mlx4_ib_cq_clean(send_cq, qp->mqp.qpn, NULL);
443 }
444
445 mlx4_qp_remove(dev->dev, &qp->mqp);
446
447 mlx4_ib_unlock_cqs(send_cq, recv_cq);
448
449 mlx4_qp_free(dev->dev, &qp->mqp);
450 mlx4_mtt_cleanup(dev->dev, &qp->mtt);
451
452 if (is_user) {
453 mlx4_ib_db_unmap_user(to_mucontext(qp->ibqp.uobject->context),
454 &qp->db);
455 ib_umem_release(qp->umem);
456 } else {
457 kfree(qp->sq.wrid);
458 kfree(qp->rq.wrid);
459 mlx4_buf_free(dev->dev, qp->buf_size, &qp->buf);
460 mlx4_ib_db_free(dev, &qp->db);
461 }
462}
463
464struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd,
465 struct ib_qp_init_attr *init_attr,
466 struct ib_udata *udata)
467{
468 struct mlx4_ib_dev *dev = to_mdev(pd->device);
469 struct mlx4_ib_sqp *sqp;
470 struct mlx4_ib_qp *qp;
471 int err;
472
473 switch (init_attr->qp_type) {
474 case IB_QPT_RC:
475 case IB_QPT_UC:
476 case IB_QPT_UD:
477 {
478 qp = kmalloc(sizeof *qp, GFP_KERNEL);
479 if (!qp)
480 return ERR_PTR(-ENOMEM);
481
482 err = create_qp_common(dev, pd, init_attr, udata, 0, qp);
483 if (err) {
484 kfree(qp);
485 return ERR_PTR(err);
486 }
487
488 qp->ibqp.qp_num = qp->mqp.qpn;
489
490 break;
491 }
492 case IB_QPT_SMI:
493 case IB_QPT_GSI:
494 {
495 /* Userspace is not allowed to create special QPs: */
496 if (pd->uobject)
497 return ERR_PTR(-EINVAL);
498
499 sqp = kmalloc(sizeof *sqp, GFP_KERNEL);
500 if (!sqp)
501 return ERR_PTR(-ENOMEM);
502
503 qp = &sqp->qp;
504
505 err = create_qp_common(dev, pd, init_attr, udata,
506 dev->dev->caps.sqp_start +
507 (init_attr->qp_type == IB_QPT_SMI ? 0 : 2) +
508 init_attr->port_num - 1,
509 qp);
510 if (err) {
511 kfree(sqp);
512 return ERR_PTR(err);
513 }
514
515 qp->port = init_attr->port_num;
516 qp->ibqp.qp_num = init_attr->qp_type == IB_QPT_SMI ? 0 : 1;
517
518 break;
519 }
520 default:
521 /* Don't support raw QPs */
522 return ERR_PTR(-EINVAL);
523 }
524
525 return &qp->ibqp;
526}
527
528int mlx4_ib_destroy_qp(struct ib_qp *qp)
529{
530 struct mlx4_ib_dev *dev = to_mdev(qp->device);
531 struct mlx4_ib_qp *mqp = to_mqp(qp);
532
533 if (is_qp0(dev, mqp))
534 mlx4_CLOSE_PORT(dev->dev, mqp->port);
535
536 destroy_qp_common(dev, mqp, !!qp->pd->uobject);
537
538 if (is_sqp(dev, mqp))
539 kfree(to_msqp(mqp));
540 else
541 kfree(mqp);
542
543 return 0;
544}
545
546static void init_port(struct mlx4_ib_dev *dev, int port)
547{
548 struct mlx4_init_port_param param;
549 int err;
550
551 memset(&param, 0, sizeof param);
552
553 param.port_width_cap = dev->dev->caps.port_width_cap;
554 param.vl_cap = dev->dev->caps.vl_cap;
555 param.mtu = ib_mtu_enum_to_int(dev->dev->caps.mtu_cap);
556 param.max_gid = dev->dev->caps.gid_table_len;
557 param.max_pkey = dev->dev->caps.pkey_table_len;
558
559 err = mlx4_INIT_PORT(dev->dev, &param, port);
560 if (err)
561 printk(KERN_WARNING "INIT_PORT failed, return code %d.\n", err);
562}
563
564static int to_mlx4_st(enum ib_qp_type type)
565{
566 switch (type) {
567 case IB_QPT_RC: return MLX4_QP_ST_RC;
568 case IB_QPT_UC: return MLX4_QP_ST_UC;
569 case IB_QPT_UD: return MLX4_QP_ST_UD;
570 case IB_QPT_SMI:
571 case IB_QPT_GSI: return MLX4_QP_ST_MLX;
572 default: return -1;
573 }
574}
575
576static __be32 to_mlx4_access_flags(struct mlx4_ib_qp *qp, struct ib_qp_attr *attr,
577 int attr_mask)
578{
579 u8 dest_rd_atomic;
580 u32 access_flags;
581 u32 hw_access_flags = 0;
582
583 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
584 dest_rd_atomic = attr->max_dest_rd_atomic;
585 else
586 dest_rd_atomic = qp->resp_depth;
587
588 if (attr_mask & IB_QP_ACCESS_FLAGS)
589 access_flags = attr->qp_access_flags;
590 else
591 access_flags = qp->atomic_rd_en;
592
593 if (!dest_rd_atomic)
594 access_flags &= IB_ACCESS_REMOTE_WRITE;
595
596 if (access_flags & IB_ACCESS_REMOTE_READ)
597 hw_access_flags |= MLX4_QP_BIT_RRE;
598 if (access_flags & IB_ACCESS_REMOTE_ATOMIC)
599 hw_access_flags |= MLX4_QP_BIT_RAE;
600 if (access_flags & IB_ACCESS_REMOTE_WRITE)
601 hw_access_flags |= MLX4_QP_BIT_RWE;
602
603 return cpu_to_be32(hw_access_flags);
604}
605
606static void store_sqp_attrs(struct mlx4_ib_sqp *sqp, struct ib_qp_attr *attr,
607 int attr_mask)
608{
609 if (attr_mask & IB_QP_PKEY_INDEX)
610 sqp->pkey_index = attr->pkey_index;
611 if (attr_mask & IB_QP_QKEY)
612 sqp->qkey = attr->qkey;
613 if (attr_mask & IB_QP_SQ_PSN)
614 sqp->send_psn = attr->sq_psn;
615}
616
617static void mlx4_set_sched(struct mlx4_qp_path *path, u8 port)
618{
619 path->sched_queue = (path->sched_queue & 0xbf) | ((port - 1) << 6);
620}
621
622static int mlx4_set_path(struct mlx4_ib_dev *dev, struct ib_ah_attr *ah,
623 struct mlx4_qp_path *path, u8 port)
624{
625 path->grh_mylmc = ah->src_path_bits & 0x7f;
626 path->rlid = cpu_to_be16(ah->dlid);
627 if (ah->static_rate) {
628 path->static_rate = ah->static_rate + MLX4_STAT_RATE_OFFSET;
629 while (path->static_rate > IB_RATE_2_5_GBPS + MLX4_STAT_RATE_OFFSET &&
630 !(1 << path->static_rate & dev->dev->caps.stat_rate_support))
631 --path->static_rate;
632 } else
633 path->static_rate = 0;
634 path->counter_index = 0xff;
635
636 if (ah->ah_flags & IB_AH_GRH) {
637 if (ah->grh.sgid_index >= dev->dev->caps.gid_table_len) {
638 printk(KERN_ERR "sgid_index (%u) too large. max is %d\n",
639 ah->grh.sgid_index, dev->dev->caps.gid_table_len - 1);
640 return -1;
641 }
642
643 path->grh_mylmc |= 1 << 7;
644 path->mgid_index = ah->grh.sgid_index;
645 path->hop_limit = ah->grh.hop_limit;
646 path->tclass_flowlabel =
647 cpu_to_be32((ah->grh.traffic_class << 20) |
648 (ah->grh.flow_label));
649 memcpy(path->rgid, ah->grh.dgid.raw, 16);
650 }
651
652 path->sched_queue = MLX4_IB_DEFAULT_SCHED_QUEUE |
653 ((port - 1) << 6) | ((ah->sl & 0xf) << 2);
654
655 return 0;
656}
657
658int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
659 int attr_mask, struct ib_udata *udata)
660{
661 struct mlx4_ib_dev *dev = to_mdev(ibqp->device);
662 struct mlx4_ib_qp *qp = to_mqp(ibqp);
663 struct mlx4_qp_context *context;
664 enum mlx4_qp_optpar optpar = 0;
665 enum ib_qp_state cur_state, new_state;
666 int sqd_event;
667 int err = -EINVAL;
668
669 context = kzalloc(sizeof *context, GFP_KERNEL);
670 if (!context)
671 return -ENOMEM;
672
673 mutex_lock(&qp->mutex);
674
675 cur_state = attr_mask & IB_QP_CUR_STATE ? attr->cur_qp_state : qp->state;
676 new_state = attr_mask & IB_QP_STATE ? attr->qp_state : cur_state;
677
678 if (!ib_modify_qp_is_ok(cur_state, new_state, ibqp->qp_type, attr_mask))
679 goto out;
680
681 if ((attr_mask & IB_QP_PKEY_INDEX) &&
682 attr->pkey_index >= dev->dev->caps.pkey_table_len) {
683 goto out;
684 }
685
686 if ((attr_mask & IB_QP_PORT) &&
687 (attr->port_num == 0 || attr->port_num > dev->dev->caps.num_ports)) {
688 goto out;
689 }
690
691 if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC &&
692 attr->max_rd_atomic > dev->dev->caps.max_qp_init_rdma) {
693 goto out;
694 }
695
696 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC &&
697 attr->max_dest_rd_atomic > 1 << dev->dev->caps.max_qp_dest_rdma) {
698 goto out;
699 }
700
701 context->flags = cpu_to_be32((to_mlx4_state(new_state) << 28) |
702 (to_mlx4_st(ibqp->qp_type) << 16));
703 context->flags |= cpu_to_be32(1 << 8); /* DE? */
704
705 if (!(attr_mask & IB_QP_PATH_MIG_STATE))
706 context->flags |= cpu_to_be32(MLX4_QP_PM_MIGRATED << 11);
707 else {
708 optpar |= MLX4_QP_OPTPAR_PM_STATE;
709 switch (attr->path_mig_state) {
710 case IB_MIG_MIGRATED:
711 context->flags |= cpu_to_be32(MLX4_QP_PM_MIGRATED << 11);
712 break;
713 case IB_MIG_REARM:
714 context->flags |= cpu_to_be32(MLX4_QP_PM_REARM << 11);
715 break;
716 case IB_MIG_ARMED:
717 context->flags |= cpu_to_be32(MLX4_QP_PM_ARMED << 11);
718 break;
719 }
720 }
721
722 if (ibqp->qp_type == IB_QPT_GSI || ibqp->qp_type == IB_QPT_SMI ||
723 ibqp->qp_type == IB_QPT_UD)
724 context->mtu_msgmax = (IB_MTU_4096 << 5) | 11;
725 else if (attr_mask & IB_QP_PATH_MTU) {
726 if (attr->path_mtu < IB_MTU_256 || attr->path_mtu > IB_MTU_4096) {
727 printk(KERN_ERR "path MTU (%u) is invalid\n",
728 attr->path_mtu);
729 return -EINVAL;
730 }
731 context->mtu_msgmax = (attr->path_mtu << 5) | 31;
732 }
733
734 if (qp->rq.max)
735 context->rq_size_stride = ilog2(qp->rq.max) << 3;
736 context->rq_size_stride |= qp->rq.wqe_shift - 4;
737
738 if (qp->sq.max)
739 context->sq_size_stride = ilog2(qp->sq.max) << 3;
740 context->sq_size_stride |= qp->sq.wqe_shift - 4;
741
742 if (qp->ibqp.uobject)
743 context->usr_page = cpu_to_be32(to_mucontext(ibqp->uobject->context)->uar.index);
744 else
745 context->usr_page = cpu_to_be32(dev->priv_uar.index);
746
747 if (attr_mask & IB_QP_DEST_QPN)
748 context->remote_qpn = cpu_to_be32(attr->dest_qp_num);
749
750 if (attr_mask & IB_QP_PORT) {
751 if (cur_state == IB_QPS_SQD && new_state == IB_QPS_SQD &&
752 !(attr_mask & IB_QP_AV)) {
753 mlx4_set_sched(&context->pri_path, attr->port_num);
754 optpar |= MLX4_QP_OPTPAR_SCHED_QUEUE;
755 }
756 }
757
758 if (attr_mask & IB_QP_PKEY_INDEX) {
759 context->pri_path.pkey_index = attr->pkey_index;
760 optpar |= MLX4_QP_OPTPAR_PKEY_INDEX;
761 }
762
763 if (attr_mask & IB_QP_RNR_RETRY) {
764 context->params1 |= cpu_to_be32(attr->rnr_retry << 13);
765 optpar |= MLX4_QP_OPTPAR_RNR_RETRY;
766 }
767
768 if (attr_mask & IB_QP_AV) {
769 if (mlx4_set_path(dev, &attr->ah_attr, &context->pri_path,
770 attr_mask & IB_QP_PORT ? attr->port_num : qp->port)) {
771 err = -EINVAL;
772 goto out;
773 }
774
775 optpar |= (MLX4_QP_OPTPAR_PRIMARY_ADDR_PATH |
776 MLX4_QP_OPTPAR_SCHED_QUEUE);
777 }
778
779 if (attr_mask & IB_QP_TIMEOUT) {
780 context->pri_path.ackto = attr->timeout << 3;
781 optpar |= MLX4_QP_OPTPAR_ACK_TIMEOUT;
782 }
783
784 if (attr_mask & IB_QP_ALT_PATH) {
785 if (attr->alt_pkey_index >= dev->dev->caps.pkey_table_len)
786 return -EINVAL;
787
788 if (attr->alt_port_num == 0 ||
789 attr->alt_port_num > dev->dev->caps.num_ports)
790 return -EINVAL;
791
792 if (mlx4_set_path(dev, &attr->alt_ah_attr, &context->alt_path,
793 attr->alt_port_num))
794 return -EINVAL;
795
796 context->alt_path.pkey_index = attr->alt_pkey_index;
797 context->alt_path.ackto = attr->alt_timeout << 3;
798 optpar |= MLX4_QP_OPTPAR_ALT_ADDR_PATH;
799 }
800
801 context->pd = cpu_to_be32(to_mpd(ibqp->pd)->pdn);
802 context->params1 = cpu_to_be32(MLX4_IB_ACK_REQ_FREQ << 28);
803 if (attr_mask & IB_QP_RETRY_CNT) {
804 context->params1 |= cpu_to_be32(attr->retry_cnt << 16);
805 optpar |= MLX4_QP_OPTPAR_RETRY_COUNT;
806 }
807
808 if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
809 if (attr->max_rd_atomic)
810 context->params1 |=
811 cpu_to_be32(fls(attr->max_rd_atomic - 1) << 21);
812 optpar |= MLX4_QP_OPTPAR_SRA_MAX;
813 }
814
815 if (attr_mask & IB_QP_SQ_PSN)
816 context->next_send_psn = cpu_to_be32(attr->sq_psn);
817
818 context->cqn_send = cpu_to_be32(to_mcq(ibqp->send_cq)->mcq.cqn);
819
820 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
821 if (attr->max_dest_rd_atomic)
822 context->params2 |=
823 cpu_to_be32(fls(attr->max_dest_rd_atomic - 1) << 21);
824 optpar |= MLX4_QP_OPTPAR_RRA_MAX;
825 }
826
827 if (attr_mask & (IB_QP_ACCESS_FLAGS | IB_QP_MAX_DEST_RD_ATOMIC)) {
828 context->params2 |= to_mlx4_access_flags(qp, attr, attr_mask);
829 optpar |= MLX4_QP_OPTPAR_RWE | MLX4_QP_OPTPAR_RRE | MLX4_QP_OPTPAR_RAE;
830 }
831
832 if (ibqp->srq)
833 context->params2 |= cpu_to_be32(MLX4_QP_BIT_RIC);
834
835 if (attr_mask & IB_QP_MIN_RNR_TIMER) {
836 context->rnr_nextrecvpsn |= cpu_to_be32(attr->min_rnr_timer << 24);
837 optpar |= MLX4_QP_OPTPAR_RNR_TIMEOUT;
838 }
839 if (attr_mask & IB_QP_RQ_PSN)
840 context->rnr_nextrecvpsn |= cpu_to_be32(attr->rq_psn);
841
842 context->cqn_recv = cpu_to_be32(to_mcq(ibqp->recv_cq)->mcq.cqn);
843
844 if (attr_mask & IB_QP_QKEY) {
845 context->qkey = cpu_to_be32(attr->qkey);
846 optpar |= MLX4_QP_OPTPAR_Q_KEY;
847 }
848
849 if (ibqp->srq)
850 context->srqn = cpu_to_be32(1 << 24 | to_msrq(ibqp->srq)->msrq.srqn);
851
852 if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
853 context->db_rec_addr = cpu_to_be64(qp->db.dma);
854
855 if (cur_state == IB_QPS_INIT &&
856 new_state == IB_QPS_RTR &&
857 (ibqp->qp_type == IB_QPT_GSI || ibqp->qp_type == IB_QPT_SMI ||
858 ibqp->qp_type == IB_QPT_UD)) {
859 context->pri_path.sched_queue = (qp->port - 1) << 6;
860 if (is_qp0(dev, qp))
861 context->pri_path.sched_queue |= MLX4_IB_DEFAULT_QP0_SCHED_QUEUE;
862 else
863 context->pri_path.sched_queue |= MLX4_IB_DEFAULT_SCHED_QUEUE;
864 }
865
866 if (cur_state == IB_QPS_RTS && new_state == IB_QPS_SQD &&
867 attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY && attr->en_sqd_async_notify)
868 sqd_event = 1;
869 else
870 sqd_event = 0;
871
872 err = mlx4_qp_modify(dev->dev, &qp->mtt, to_mlx4_state(cur_state),
873 to_mlx4_state(new_state), context, optpar,
874 sqd_event, &qp->mqp);
875 if (err)
876 goto out;
877
878 qp->state = new_state;
879
880 if (attr_mask & IB_QP_ACCESS_FLAGS)
881 qp->atomic_rd_en = attr->qp_access_flags;
882 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
883 qp->resp_depth = attr->max_dest_rd_atomic;
884 if (attr_mask & IB_QP_PORT)
885 qp->port = attr->port_num;
886 if (attr_mask & IB_QP_ALT_PATH)
887 qp->alt_port = attr->alt_port_num;
888
889 if (is_sqp(dev, qp))
890 store_sqp_attrs(to_msqp(qp), attr, attr_mask);
891
892 /*
893 * If we moved QP0 to RTR, bring the IB link up; if we moved
894 * QP0 to RESET or ERROR, bring the link back down.
895 */
896 if (is_qp0(dev, qp)) {
897 if (cur_state != IB_QPS_RTR && new_state == IB_QPS_RTR)
898 init_port(dev, qp->port);
899
900 if (cur_state != IB_QPS_RESET && cur_state != IB_QPS_ERR &&
901 (new_state == IB_QPS_RESET || new_state == IB_QPS_ERR))
902 mlx4_CLOSE_PORT(dev->dev, qp->port);
903 }
904
905 /*
906 * If we moved a kernel QP to RESET, clean up all old CQ
907 * entries and reinitialize the QP.
908 */
909 if (new_state == IB_QPS_RESET && !ibqp->uobject) {
910 mlx4_ib_cq_clean(to_mcq(ibqp->recv_cq), qp->mqp.qpn,
911 ibqp->srq ? to_msrq(ibqp->srq): NULL);
912 if (ibqp->send_cq != ibqp->recv_cq)
913 mlx4_ib_cq_clean(to_mcq(ibqp->send_cq), qp->mqp.qpn, NULL);
914
915 qp->rq.head = 0;
916 qp->rq.tail = 0;
917 qp->sq.head = 0;
918 qp->sq.tail = 0;
919 *qp->db.db = 0;
920 }
921
922out:
923 mutex_unlock(&qp->mutex);
924 kfree(context);
925 return err;
926}
927
928static int build_mlx_header(struct mlx4_ib_sqp *sqp, struct ib_send_wr *wr,
929 void *wqe)
930{
931 struct ib_device *ib_dev = &to_mdev(sqp->qp.ibqp.device)->ib_dev;
932 struct mlx4_wqe_mlx_seg *mlx = wqe;
933 struct mlx4_wqe_inline_seg *inl = wqe + sizeof *mlx;
934 struct mlx4_ib_ah *ah = to_mah(wr->wr.ud.ah);
935 u16 pkey;
936 int send_size;
937 int header_size;
938 int i;
939
940 send_size = 0;
941 for (i = 0; i < wr->num_sge; ++i)
942 send_size += wr->sg_list[i].length;
943
944 ib_ud_header_init(send_size, mlx4_ib_ah_grh_present(ah), &sqp->ud_header);
945
946 sqp->ud_header.lrh.service_level =
947 be32_to_cpu(ah->av.sl_tclass_flowlabel) >> 28;
948 sqp->ud_header.lrh.destination_lid = ah->av.dlid;
949 sqp->ud_header.lrh.source_lid = cpu_to_be16(ah->av.g_slid & 0x7f);
950 if (mlx4_ib_ah_grh_present(ah)) {
951 sqp->ud_header.grh.traffic_class =
952 (be32_to_cpu(ah->av.sl_tclass_flowlabel) >> 20) & 0xff;
953 sqp->ud_header.grh.flow_label =
954 ah->av.sl_tclass_flowlabel & cpu_to_be32(0xfffff);
955 ib_get_cached_gid(ib_dev, be32_to_cpu(ah->av.port_pd) >> 24,
956 ah->av.gid_index, &sqp->ud_header.grh.source_gid);
957 memcpy(sqp->ud_header.grh.destination_gid.raw,
958 ah->av.dgid, 16);
959 }
960
961 mlx->flags &= cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE);
962 mlx->flags |= cpu_to_be32((!sqp->qp.ibqp.qp_num ? MLX4_WQE_MLX_VL15 : 0) |
963 (sqp->ud_header.lrh.destination_lid ==
964 IB_LID_PERMISSIVE ? MLX4_WQE_MLX_SLR : 0) |
965 (sqp->ud_header.lrh.service_level << 8));
966 mlx->rlid = sqp->ud_header.lrh.destination_lid;
967
968 switch (wr->opcode) {
969 case IB_WR_SEND:
970 sqp->ud_header.bth.opcode = IB_OPCODE_UD_SEND_ONLY;
971 sqp->ud_header.immediate_present = 0;
972 break;
973 case IB_WR_SEND_WITH_IMM:
974 sqp->ud_header.bth.opcode = IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE;
975 sqp->ud_header.immediate_present = 1;
976 sqp->ud_header.immediate_data = wr->imm_data;
977 break;
978 default:
979 return -EINVAL;
980 }
981
982 sqp->ud_header.lrh.virtual_lane = !sqp->qp.ibqp.qp_num ? 15 : 0;
983 if (sqp->ud_header.lrh.destination_lid == IB_LID_PERMISSIVE)
984 sqp->ud_header.lrh.source_lid = IB_LID_PERMISSIVE;
985 sqp->ud_header.bth.solicited_event = !!(wr->send_flags & IB_SEND_SOLICITED);
986 if (!sqp->qp.ibqp.qp_num)
987 ib_get_cached_pkey(ib_dev, sqp->qp.port, sqp->pkey_index, &pkey);
988 else
989 ib_get_cached_pkey(ib_dev, sqp->qp.port, wr->wr.ud.pkey_index, &pkey);
990 sqp->ud_header.bth.pkey = cpu_to_be16(pkey);
991 sqp->ud_header.bth.destination_qpn = cpu_to_be32(wr->wr.ud.remote_qpn);
992 sqp->ud_header.bth.psn = cpu_to_be32((sqp->send_psn++) & ((1 << 24) - 1));
993 sqp->ud_header.deth.qkey = cpu_to_be32(wr->wr.ud.remote_qkey & 0x80000000 ?
994 sqp->qkey : wr->wr.ud.remote_qkey);
995 sqp->ud_header.deth.source_qpn = cpu_to_be32(sqp->qp.ibqp.qp_num);
996
997 header_size = ib_ud_header_pack(&sqp->ud_header, sqp->header_buf);
998
999 if (0) {
1000 printk(KERN_ERR "built UD header of size %d:\n", header_size);
1001 for (i = 0; i < header_size / 4; ++i) {
1002 if (i % 8 == 0)
1003 printk(" [%02x] ", i * 4);
1004 printk(" %08x",
1005 be32_to_cpu(((__be32 *) sqp->header_buf)[i]));
1006 if ((i + 1) % 8 == 0)
1007 printk("\n");
1008 }
1009 printk("\n");
1010 }
1011
1012 inl->byte_count = cpu_to_be32(1 << 31 | header_size);
1013 memcpy(inl + 1, sqp->header_buf, header_size);
1014
1015 return ALIGN(sizeof (struct mlx4_wqe_inline_seg) + header_size, 16);
1016}
1017
1018static int mlx4_wq_overflow(struct mlx4_ib_wq *wq, int nreq, struct ib_cq *ib_cq)
1019{
1020 unsigned cur;
1021 struct mlx4_ib_cq *cq;
1022
1023 cur = wq->head - wq->tail;
1024 if (likely(cur + nreq < wq->max))
1025 return 0;
1026
1027 cq = to_mcq(ib_cq);
1028 spin_lock(&cq->lock);
1029 cur = wq->head - wq->tail;
1030 spin_unlock(&cq->lock);
1031
1032 return cur + nreq >= wq->max;
1033}
1034
1035int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
1036 struct ib_send_wr **bad_wr)
1037{
1038 struct mlx4_ib_qp *qp = to_mqp(ibqp);
1039 void *wqe;
1040 struct mlx4_wqe_ctrl_seg *ctrl;
1041 unsigned long flags;
1042 int nreq;
1043 int err = 0;
1044 int ind;
1045 int size;
1046 int i;
1047
1048 spin_lock_irqsave(&qp->rq.lock, flags);
1049
1050 ind = qp->sq.head;
1051
1052 for (nreq = 0; wr; ++nreq, wr = wr->next) {
1053 if (mlx4_wq_overflow(&qp->sq, nreq, qp->ibqp.send_cq)) {
1054 err = -ENOMEM;
1055 *bad_wr = wr;
1056 goto out;
1057 }
1058
1059 if (unlikely(wr->num_sge > qp->sq.max_gs)) {
1060 err = -EINVAL;
1061 *bad_wr = wr;
1062 goto out;
1063 }
1064
1065 ctrl = wqe = get_send_wqe(qp, ind & (qp->sq.max - 1));
1066 qp->sq.wrid[ind & (qp->sq.max - 1)] = wr->wr_id;
1067
1068 ctrl->srcrb_flags =
1069 (wr->send_flags & IB_SEND_SIGNALED ?
1070 cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE) : 0) |
1071 (wr->send_flags & IB_SEND_SOLICITED ?
1072 cpu_to_be32(MLX4_WQE_CTRL_SOLICITED) : 0) |
1073 qp->sq_signal_bits;
1074
1075 if (wr->opcode == IB_WR_SEND_WITH_IMM ||
1076 wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM)
1077 ctrl->imm = wr->imm_data;
1078 else
1079 ctrl->imm = 0;
1080
1081 wqe += sizeof *ctrl;
1082 size = sizeof *ctrl / 16;
1083
1084 switch (ibqp->qp_type) {
1085 case IB_QPT_RC:
1086 case IB_QPT_UC:
1087 switch (wr->opcode) {
1088 case IB_WR_ATOMIC_CMP_AND_SWP:
1089 case IB_WR_ATOMIC_FETCH_AND_ADD:
1090 ((struct mlx4_wqe_raddr_seg *) wqe)->raddr =
1091 cpu_to_be64(wr->wr.atomic.remote_addr);
1092 ((struct mlx4_wqe_raddr_seg *) wqe)->rkey =
1093 cpu_to_be32(wr->wr.atomic.rkey);
1094 ((struct mlx4_wqe_raddr_seg *) wqe)->reserved = 0;
1095
1096 wqe += sizeof (struct mlx4_wqe_raddr_seg);
1097
1098 if (wr->opcode == IB_WR_ATOMIC_CMP_AND_SWP) {
1099 ((struct mlx4_wqe_atomic_seg *) wqe)->swap_add =
1100 cpu_to_be64(wr->wr.atomic.swap);
1101 ((struct mlx4_wqe_atomic_seg *) wqe)->compare =
1102 cpu_to_be64(wr->wr.atomic.compare_add);
1103 } else {
1104 ((struct mlx4_wqe_atomic_seg *) wqe)->swap_add =
1105 cpu_to_be64(wr->wr.atomic.compare_add);
1106 ((struct mlx4_wqe_atomic_seg *) wqe)->compare = 0;
1107 }
1108
1109 wqe += sizeof (struct mlx4_wqe_atomic_seg);
1110 size += (sizeof (struct mlx4_wqe_raddr_seg) +
1111 sizeof (struct mlx4_wqe_atomic_seg)) / 16;
1112
1113 break;
1114
1115 case IB_WR_RDMA_READ:
1116 case IB_WR_RDMA_WRITE:
1117 case IB_WR_RDMA_WRITE_WITH_IMM:
1118 ((struct mlx4_wqe_raddr_seg *) wqe)->raddr =
1119 cpu_to_be64(wr->wr.rdma.remote_addr);
1120 ((struct mlx4_wqe_raddr_seg *) wqe)->rkey =
1121 cpu_to_be32(wr->wr.rdma.rkey);
1122 ((struct mlx4_wqe_raddr_seg *) wqe)->reserved = 0;
1123
1124 wqe += sizeof (struct mlx4_wqe_raddr_seg);
1125 size += sizeof (struct mlx4_wqe_raddr_seg) / 16;
1126
1127 break;
1128
1129 default:
1130 /* No extra segments required for sends */
1131 break;
1132 }
1133 break;
1134
1135 case IB_QPT_UD:
1136 memcpy(((struct mlx4_wqe_datagram_seg *) wqe)->av,
1137 &to_mah(wr->wr.ud.ah)->av, sizeof (struct mlx4_av));
1138 ((struct mlx4_wqe_datagram_seg *) wqe)->dqpn =
1139 cpu_to_be32(wr->wr.ud.remote_qpn);
1140 ((struct mlx4_wqe_datagram_seg *) wqe)->qkey =
1141 cpu_to_be32(wr->wr.ud.remote_qkey);
1142
1143 wqe += sizeof (struct mlx4_wqe_datagram_seg);
1144 size += sizeof (struct mlx4_wqe_datagram_seg) / 16;
1145 break;
1146
1147 case IB_QPT_SMI:
1148 case IB_QPT_GSI:
1149 err = build_mlx_header(to_msqp(qp), wr, ctrl);
1150 if (err < 0) {
1151 *bad_wr = wr;
1152 goto out;
1153 }
1154 wqe += err;
1155 size += err / 16;
1156
1157 err = 0;
1158 break;
1159
1160 default:
1161 break;
1162 }
1163
1164 for (i = 0; i < wr->num_sge; ++i) {
1165 ((struct mlx4_wqe_data_seg *) wqe)->byte_count =
1166 cpu_to_be32(wr->sg_list[i].length);
1167 ((struct mlx4_wqe_data_seg *) wqe)->lkey =
1168 cpu_to_be32(wr->sg_list[i].lkey);
1169 ((struct mlx4_wqe_data_seg *) wqe)->addr =
1170 cpu_to_be64(wr->sg_list[i].addr);
1171
1172 wqe += sizeof (struct mlx4_wqe_data_seg);
1173 size += sizeof (struct mlx4_wqe_data_seg) / 16;
1174 }
1175
1176 /* Add one more inline data segment for ICRC for MLX sends */
1177 if (qp->ibqp.qp_type == IB_QPT_SMI || qp->ibqp.qp_type == IB_QPT_GSI) {
1178 ((struct mlx4_wqe_inline_seg *) wqe)->byte_count =
1179 cpu_to_be32((1 << 31) | 4);
1180 ((u32 *) wqe)[1] = 0;
1181 wqe += sizeof (struct mlx4_wqe_data_seg);
1182 size += sizeof (struct mlx4_wqe_data_seg) / 16;
1183 }
1184
1185 ctrl->fence_size = (wr->send_flags & IB_SEND_FENCE ?
1186 MLX4_WQE_CTRL_FENCE : 0) | size;
1187
1188 /*
1189 * Make sure descriptor is fully written before
1190 * setting ownership bit (because HW can start
1191 * executing as soon as we do).
1192 */
1193 wmb();
1194
1195 if (wr->opcode < 0 || wr->opcode > ARRAY_SIZE(mlx4_ib_opcode)) {
1196 err = -EINVAL;
1197 goto out;
1198 }
1199
1200 ctrl->owner_opcode = mlx4_ib_opcode[wr->opcode] |
1201 (ind & qp->sq.max ? cpu_to_be32(1 << 31) : 0);
1202
1203 ++ind;
1204 }
1205
1206out:
1207 if (likely(nreq)) {
1208 qp->sq.head += nreq;
1209
1210 /*
1211 * Make sure that descriptors are written before
1212 * doorbell record.
1213 */
1214 wmb();
1215
1216 writel(qp->doorbell_qpn,
1217 to_mdev(ibqp->device)->uar_map + MLX4_SEND_DOORBELL);
1218
1219 /*
1220 * Make sure doorbells don't leak out of SQ spinlock
1221 * and reach the HCA out of order.
1222 */
1223 mmiowb();
1224 }
1225
1226 spin_unlock_irqrestore(&qp->rq.lock, flags);
1227
1228 return err;
1229}
1230
1231int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
1232 struct ib_recv_wr **bad_wr)
1233{
1234 struct mlx4_ib_qp *qp = to_mqp(ibqp);
1235 struct mlx4_wqe_data_seg *scat;
1236 unsigned long flags;
1237 int err = 0;
1238 int nreq;
1239 int ind;
1240 int i;
1241
1242 spin_lock_irqsave(&qp->rq.lock, flags);
1243
1244 ind = qp->rq.head & (qp->rq.max - 1);
1245
1246 for (nreq = 0; wr; ++nreq, wr = wr->next) {
1247 if (mlx4_wq_overflow(&qp->rq, nreq, qp->ibqp.send_cq)) {
1248 err = -ENOMEM;
1249 *bad_wr = wr;
1250 goto out;
1251 }
1252
1253 if (unlikely(wr->num_sge > qp->rq.max_gs)) {
1254 err = -EINVAL;
1255 *bad_wr = wr;
1256 goto out;
1257 }
1258
1259 scat = get_recv_wqe(qp, ind);
1260
1261 for (i = 0; i < wr->num_sge; ++i) {
1262 scat[i].byte_count = cpu_to_be32(wr->sg_list[i].length);
1263 scat[i].lkey = cpu_to_be32(wr->sg_list[i].lkey);
1264 scat[i].addr = cpu_to_be64(wr->sg_list[i].addr);
1265 }
1266
1267 if (i < qp->rq.max_gs) {
1268 scat[i].byte_count = 0;
1269 scat[i].lkey = cpu_to_be32(MLX4_INVALID_LKEY);
1270 scat[i].addr = 0;
1271 }
1272
1273 qp->rq.wrid[ind] = wr->wr_id;
1274
1275 ind = (ind + 1) & (qp->rq.max - 1);
1276 }
1277
1278out:
1279 if (likely(nreq)) {
1280 qp->rq.head += nreq;
1281
1282 /*
1283 * Make sure that descriptors are written before
1284 * doorbell record.
1285 */
1286 wmb();
1287
1288 *qp->db.db = cpu_to_be32(qp->rq.head & 0xffff);
1289 }
1290
1291 spin_unlock_irqrestore(&qp->rq.lock, flags);
1292
1293 return err;
1294}
diff --git a/drivers/infiniband/hw/mlx4/srq.c b/drivers/infiniband/hw/mlx4/srq.c
new file mode 100644
index 000000000000..42ab4a801d6a
--- /dev/null
+++ b/drivers/infiniband/hw/mlx4/srq.c
@@ -0,0 +1,334 @@
1/*
2 * Copyright (c) 2007 Cisco Systems, 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
33#include <linux/mlx4/qp.h>
34#include <linux/mlx4/srq.h>
35
36#include "mlx4_ib.h"
37#include "user.h"
38
39static void *get_wqe(struct mlx4_ib_srq *srq, int n)
40{
41 int offset = n << srq->msrq.wqe_shift;
42
43 if (srq->buf.nbufs == 1)
44 return srq->buf.u.direct.buf + offset;
45 else
46 return srq->buf.u.page_list[offset >> PAGE_SHIFT].buf +
47 (offset & (PAGE_SIZE - 1));
48}
49
50static void mlx4_ib_srq_event(struct mlx4_srq *srq, enum mlx4_event type)
51{
52 struct ib_event event;
53 struct ib_srq *ibsrq = &to_mibsrq(srq)->ibsrq;
54
55 if (ibsrq->event_handler) {
56 event.device = ibsrq->device;
57 event.element.srq = ibsrq;
58 switch (type) {
59 case MLX4_EVENT_TYPE_SRQ_LIMIT:
60 event.event = IB_EVENT_SRQ_LIMIT_REACHED;
61 break;
62 case MLX4_EVENT_TYPE_SRQ_CATAS_ERROR:
63 event.event = IB_EVENT_SRQ_ERR;
64 break;
65 default:
66 printk(KERN_WARNING "mlx4_ib: Unexpected event type %d "
67 "on SRQ %06x\n", type, srq->srqn);
68 return;
69 }
70
71 ibsrq->event_handler(&event, ibsrq->srq_context);
72 }
73}
74
75struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
76 struct ib_srq_init_attr *init_attr,
77 struct ib_udata *udata)
78{
79 struct mlx4_ib_dev *dev = to_mdev(pd->device);
80 struct mlx4_ib_srq *srq;
81 struct mlx4_wqe_srq_next_seg *next;
82 int desc_size;
83 int buf_size;
84 int err;
85 int i;
86
87 /* Sanity check SRQ size before proceeding */
88 if (init_attr->attr.max_wr >= dev->dev->caps.max_srq_wqes ||
89 init_attr->attr.max_sge > dev->dev->caps.max_srq_sge)
90 return ERR_PTR(-EINVAL);
91
92 srq = kmalloc(sizeof *srq, GFP_KERNEL);
93 if (!srq)
94 return ERR_PTR(-ENOMEM);
95
96 mutex_init(&srq->mutex);
97 spin_lock_init(&srq->lock);
98 srq->msrq.max = roundup_pow_of_two(init_attr->attr.max_wr + 1);
99 srq->msrq.max_gs = init_attr->attr.max_sge;
100
101 desc_size = max(32UL,
102 roundup_pow_of_two(sizeof (struct mlx4_wqe_srq_next_seg) +
103 srq->msrq.max_gs *
104 sizeof (struct mlx4_wqe_data_seg)));
105 srq->msrq.wqe_shift = ilog2(desc_size);
106
107 buf_size = srq->msrq.max * desc_size;
108
109 if (pd->uobject) {
110 struct mlx4_ib_create_srq ucmd;
111
112 if (ib_copy_from_udata(&ucmd, udata, sizeof ucmd)) {
113 err = -EFAULT;
114 goto err_srq;
115 }
116
117 srq->umem = ib_umem_get(pd->uobject->context, ucmd.buf_addr,
118 buf_size, 0);
119 if (IS_ERR(srq->umem)) {
120 err = PTR_ERR(srq->umem);
121 goto err_srq;
122 }
123
124 err = mlx4_mtt_init(dev->dev, ib_umem_page_count(srq->umem),
125 ilog2(srq->umem->page_size), &srq->mtt);
126 if (err)
127 goto err_buf;
128
129 err = mlx4_ib_umem_write_mtt(dev, &srq->mtt, srq->umem);
130 if (err)
131 goto err_mtt;
132
133 err = mlx4_ib_db_map_user(to_mucontext(pd->uobject->context),
134 ucmd.db_addr, &srq->db);
135 if (err)
136 goto err_mtt;
137 } else {
138 err = mlx4_ib_db_alloc(dev, &srq->db, 0);
139 if (err)
140 goto err_srq;
141
142 *srq->db.db = 0;
143
144 if (mlx4_buf_alloc(dev->dev, buf_size, PAGE_SIZE * 2, &srq->buf)) {
145 err = -ENOMEM;
146 goto err_db;
147 }
148
149 srq->head = 0;
150 srq->tail = srq->msrq.max - 1;
151 srq->wqe_ctr = 0;
152
153 for (i = 0; i < srq->msrq.max; ++i) {
154 next = get_wqe(srq, i);
155 next->next_wqe_index =
156 cpu_to_be16((i + 1) & (srq->msrq.max - 1));
157 }
158
159 err = mlx4_mtt_init(dev->dev, srq->buf.npages, srq->buf.page_shift,
160 &srq->mtt);
161 if (err)
162 goto err_buf;
163
164 err = mlx4_buf_write_mtt(dev->dev, &srq->mtt, &srq->buf);
165 if (err)
166 goto err_mtt;
167
168 srq->wrid = kmalloc(srq->msrq.max * sizeof (u64), GFP_KERNEL);
169 if (!srq->wrid) {
170 err = -ENOMEM;
171 goto err_mtt;
172 }
173 }
174
175 err = mlx4_srq_alloc(dev->dev, to_mpd(pd)->pdn, &srq->mtt,
176 srq->db.dma, &srq->msrq);
177 if (err)
178 goto err_wrid;
179
180 srq->msrq.event = mlx4_ib_srq_event;
181
182 if (pd->uobject)
183 if (ib_copy_to_udata(udata, &srq->msrq.srqn, sizeof (__u32))) {
184 err = -EFAULT;
185 goto err_wrid;
186 }
187
188 init_attr->attr.max_wr = srq->msrq.max - 1;
189
190 return &srq->ibsrq;
191
192err_wrid:
193 if (pd->uobject)
194 mlx4_ib_db_unmap_user(to_mucontext(pd->uobject->context), &srq->db);
195 else
196 kfree(srq->wrid);
197
198err_mtt:
199 mlx4_mtt_cleanup(dev->dev, &srq->mtt);
200
201err_buf:
202 if (pd->uobject)
203 ib_umem_release(srq->umem);
204 else
205 mlx4_buf_free(dev->dev, buf_size, &srq->buf);
206
207err_db:
208 if (!pd->uobject)
209 mlx4_ib_db_free(dev, &srq->db);
210
211err_srq:
212 kfree(srq);
213
214 return ERR_PTR(err);
215}
216
217int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
218 enum ib_srq_attr_mask attr_mask, struct ib_udata *udata)
219{
220 struct mlx4_ib_dev *dev = to_mdev(ibsrq->device);
221 struct mlx4_ib_srq *srq = to_msrq(ibsrq);
222 int ret;
223
224 /* We don't support resizing SRQs (yet?) */
225 if (attr_mask & IB_SRQ_MAX_WR)
226 return -EINVAL;
227
228 if (attr_mask & IB_SRQ_LIMIT) {
229 if (attr->srq_limit >= srq->msrq.max)
230 return -EINVAL;
231
232 mutex_lock(&srq->mutex);
233 ret = mlx4_srq_arm(dev->dev, &srq->msrq, attr->srq_limit);
234 mutex_unlock(&srq->mutex);
235
236 if (ret)
237 return ret;
238 }
239
240 return 0;
241}
242
243int mlx4_ib_destroy_srq(struct ib_srq *srq)
244{
245 struct mlx4_ib_dev *dev = to_mdev(srq->device);
246 struct mlx4_ib_srq *msrq = to_msrq(srq);
247
248 mlx4_srq_free(dev->dev, &msrq->msrq);
249 mlx4_mtt_cleanup(dev->dev, &msrq->mtt);
250
251 if (srq->uobject) {
252 mlx4_ib_db_unmap_user(to_mucontext(srq->uobject->context), &msrq->db);
253 ib_umem_release(msrq->umem);
254 } else {
255 kfree(msrq->wrid);
256 mlx4_buf_free(dev->dev, msrq->msrq.max << msrq->msrq.wqe_shift,
257 &msrq->buf);
258 mlx4_ib_db_free(dev, &msrq->db);
259 }
260
261 kfree(msrq);
262
263 return 0;
264}
265
266void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index)
267{
268 struct mlx4_wqe_srq_next_seg *next;
269
270 /* always called with interrupts disabled. */
271 spin_lock(&srq->lock);
272
273 next = get_wqe(srq, srq->tail);
274 next->next_wqe_index = cpu_to_be16(wqe_index);
275 srq->tail = wqe_index;
276
277 spin_unlock(&srq->lock);
278}
279
280int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
281 struct ib_recv_wr **bad_wr)
282{
283 struct mlx4_ib_srq *srq = to_msrq(ibsrq);
284 struct mlx4_wqe_srq_next_seg *next;
285 struct mlx4_wqe_data_seg *scat;
286 unsigned long flags;
287 int err = 0;
288 int nreq;
289 int i;
290
291 spin_lock_irqsave(&srq->lock, flags);
292
293 for (nreq = 0; wr; ++nreq, wr = wr->next) {
294 if (unlikely(wr->num_sge > srq->msrq.max_gs)) {
295 err = -EINVAL;
296 *bad_wr = wr;
297 break;
298 }
299
300 srq->wrid[srq->head] = wr->wr_id;
301
302 next = get_wqe(srq, srq->head);
303 srq->head = be16_to_cpu(next->next_wqe_index);
304 scat = (struct mlx4_wqe_data_seg *) (next + 1);
305
306 for (i = 0; i < wr->num_sge; ++i) {
307 scat[i].byte_count = cpu_to_be32(wr->sg_list[i].length);
308 scat[i].lkey = cpu_to_be32(wr->sg_list[i].lkey);
309 scat[i].addr = cpu_to_be64(wr->sg_list[i].addr);
310 }
311
312 if (i < srq->msrq.max_gs) {
313 scat[i].byte_count = 0;
314 scat[i].lkey = cpu_to_be32(MLX4_INVALID_LKEY);
315 scat[i].addr = 0;
316 }
317 }
318
319 if (likely(nreq)) {
320 srq->wqe_ctr += nreq;
321
322 /*
323 * Make sure that descriptors are written before
324 * doorbell record.
325 */
326 wmb();
327
328 *srq->db.db = cpu_to_be32(srq->wqe_ctr);
329 }
330
331 spin_unlock_irqrestore(&srq->lock, flags);
332
333 return err;
334}
diff --git a/drivers/infiniband/hw/mlx4/user.h b/drivers/infiniband/hw/mlx4/user.h
new file mode 100644
index 000000000000..5b8eddc9fa83
--- /dev/null
+++ b/drivers/infiniband/hw/mlx4/user.h
@@ -0,0 +1,92 @@
1/*
2 * Copyright (c) 2007 Cisco Systems, 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
33#ifndef MLX4_IB_USER_H
34#define MLX4_IB_USER_H
35
36#include <linux/types.h>
37
38/*
39 * Increment this value if any changes that break userspace ABI
40 * compatibility are made.
41 */
42#define MLX4_IB_UVERBS_ABI_VERSION 1
43
44/*
45 * Make sure that all structs defined in this file remain laid out so
46 * that they pack the same way on 32-bit and 64-bit architectures (to
47 * avoid incompatibility between 32-bit userspace and 64-bit kernels).
48 * In particular do not use pointer types -- pass pointers in __u64
49 * instead.
50 */
51
52struct mlx4_ib_alloc_ucontext_resp {
53 __u32 qp_tab_size;
54 __u16 bf_reg_size;
55 __u16 bf_regs_per_page;
56};
57
58struct mlx4_ib_alloc_pd_resp {
59 __u32 pdn;
60 __u32 reserved;
61};
62
63struct mlx4_ib_create_cq {
64 __u64 buf_addr;
65 __u64 db_addr;
66};
67
68struct mlx4_ib_create_cq_resp {
69 __u32 cqn;
70 __u32 reserved;
71};
72
73struct mlx4_ib_resize_cq {
74 __u64 buf_addr;
75};
76
77struct mlx4_ib_create_srq {
78 __u64 buf_addr;
79 __u64 db_addr;
80};
81
82struct mlx4_ib_create_srq_resp {
83 __u32 srqn;
84 __u32 reserved;
85};
86
87struct mlx4_ib_create_qp {
88 __u64 buf_addr;
89 __u64 db_addr;
90};
91
92#endif /* MLX4_IB_USER_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-09-19 20:39:20 -0400