aboutsummaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
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
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')
-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
-rw-r--r--drivers/net/Kconfig14
-rw-r--r--drivers/net/Makefile1
-rw-r--r--drivers/net/mlx4/Makefile4
-rw-r--r--drivers/net/mlx4/alloc.c179
-rw-r--r--drivers/net/mlx4/catas.c70
-rw-r--r--drivers/net/mlx4/cmd.c429
-rw-r--r--drivers/net/mlx4/cq.c254
-rw-r--r--drivers/net/mlx4/eq.c696
-rw-r--r--drivers/net/mlx4/fw.c775
-rw-r--r--drivers/net/mlx4/fw.h167
-rw-r--r--drivers/net/mlx4/icm.c379
-rw-r--r--drivers/net/mlx4/icm.h135
-rw-r--r--drivers/net/mlx4/intf.c165
-rw-r--r--drivers/net/mlx4/main.c936
-rw-r--r--drivers/net/mlx4/mcg.c380
-rw-r--r--drivers/net/mlx4/mlx4.h348
-rw-r--r--drivers/net/mlx4/mr.c479
-rw-r--r--drivers/net/mlx4/pd.c102
-rw-r--r--drivers/net/mlx4/profile.c238
-rw-r--r--drivers/net/mlx4/qp.c280
-rw-r--r--drivers/net/mlx4/reset.c181
-rw-r--r--drivers/net/mlx4/srq.c227
36 files changed, 10474 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 */
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index b86ccd2ecd5b..6db12d0265da 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -2493,6 +2493,20 @@ config PASEMI_MAC
2493 This driver supports the on-chip 1/10Gbit Ethernet controller on 2493 This driver supports the on-chip 1/10Gbit Ethernet controller on
2494 PA Semi's PWRficient line of chips. 2494 PA Semi's PWRficient line of chips.
2495 2495
2496config MLX4_CORE
2497 tristate
2498 depends on PCI
2499 default n
2500
2501config MLX4_DEBUG
2502 bool "Verbose debugging output" if (MLX4_CORE && EMBEDDED)
2503 default y
2504 ---help---
2505 This option causes debugging code to be compiled into the
2506 mlx4_core driver. The output can be turned on via the
2507 debug_level module parameter (which can also be set after
2508 the driver is loaded through sysfs).
2509
2496endmenu 2510endmenu
2497 2511
2498source "drivers/net/tokenring/Kconfig" 2512source "drivers/net/tokenring/Kconfig"
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index 59c0459a037c..7faeeeabc838 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -197,6 +197,7 @@ obj-$(CONFIG_SMC911X) += smc911x.o
197obj-$(CONFIG_DM9000) += dm9000.o 197obj-$(CONFIG_DM9000) += dm9000.o
198obj-$(CONFIG_FEC_8XX) += fec_8xx/ 198obj-$(CONFIG_FEC_8XX) += fec_8xx/
199obj-$(CONFIG_PASEMI_MAC) += pasemi_mac.o 199obj-$(CONFIG_PASEMI_MAC) += pasemi_mac.o
200obj-$(CONFIG_MLX4_CORE) += mlx4/
200 201
201obj-$(CONFIG_MACB) += macb.o 202obj-$(CONFIG_MACB) += macb.o
202 203
diff --git a/drivers/net/mlx4/Makefile b/drivers/net/mlx4/Makefile
new file mode 100644
index 000000000000..0952a6528f58
--- /dev/null
+++ b/drivers/net/mlx4/Makefile
@@ -0,0 +1,4 @@
1obj-$(CONFIG_MLX4_CORE) += mlx4_core.o
2
3mlx4_core-y := alloc.o catas.o cmd.o cq.o eq.o fw.o icm.o intf.o main.o mcg.o \
4 mr.o pd.o profile.o qp.o reset.o srq.o
diff --git a/drivers/net/mlx4/alloc.c b/drivers/net/mlx4/alloc.c
new file mode 100644
index 000000000000..9ffdb9d29da9
--- /dev/null
+++ b/drivers/net/mlx4/alloc.c
@@ -0,0 +1,179 @@
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/errno.h>
34#include <linux/slab.h>
35#include <linux/bitmap.h>
36
37#include "mlx4.h"
38
39u32 mlx4_bitmap_alloc(struct mlx4_bitmap *bitmap)
40{
41 u32 obj;
42
43 spin_lock(&bitmap->lock);
44
45 obj = find_next_zero_bit(bitmap->table, bitmap->max, bitmap->last);
46 if (obj >= bitmap->max) {
47 bitmap->top = (bitmap->top + bitmap->max) & bitmap->mask;
48 obj = find_first_zero_bit(bitmap->table, bitmap->max);
49 }
50
51 if (obj < bitmap->max) {
52 set_bit(obj, bitmap->table);
53 obj |= bitmap->top;
54 bitmap->last = obj + 1;
55 } else
56 obj = -1;
57
58 spin_unlock(&bitmap->lock);
59
60 return obj;
61}
62
63void mlx4_bitmap_free(struct mlx4_bitmap *bitmap, u32 obj)
64{
65 obj &= bitmap->max - 1;
66
67 spin_lock(&bitmap->lock);
68 clear_bit(obj, bitmap->table);
69 bitmap->last = min(bitmap->last, obj);
70 bitmap->top = (bitmap->top + bitmap->max) & bitmap->mask;
71 spin_unlock(&bitmap->lock);
72}
73
74int mlx4_bitmap_init(struct mlx4_bitmap *bitmap, u32 num, u32 mask, u32 reserved)
75{
76 int i;
77
78 /* num must be a power of 2 */
79 if (num != roundup_pow_of_two(num))
80 return -EINVAL;
81
82 bitmap->last = 0;
83 bitmap->top = 0;
84 bitmap->max = num;
85 bitmap->mask = mask;
86 spin_lock_init(&bitmap->lock);
87 bitmap->table = kzalloc(BITS_TO_LONGS(num) * sizeof (long), GFP_KERNEL);
88 if (!bitmap->table)
89 return -ENOMEM;
90
91 for (i = 0; i < reserved; ++i)
92 set_bit(i, bitmap->table);
93
94 return 0;
95}
96
97void mlx4_bitmap_cleanup(struct mlx4_bitmap *bitmap)
98{
99 kfree(bitmap->table);
100}
101
102/*
103 * Handling for queue buffers -- we allocate a bunch of memory and
104 * register it in a memory region at HCA virtual address 0. If the
105 * requested size is > max_direct, we split the allocation into
106 * multiple pages, so we don't require too much contiguous memory.
107 */
108
109int mlx4_buf_alloc(struct mlx4_dev *dev, int size, int max_direct,
110 struct mlx4_buf *buf)
111{
112 dma_addr_t t;
113
114 if (size <= max_direct) {
115 buf->nbufs = 1;
116 buf->npages = 1;
117 buf->page_shift = get_order(size) + PAGE_SHIFT;
118 buf->u.direct.buf = dma_alloc_coherent(&dev->pdev->dev,
119 size, &t, GFP_KERNEL);
120 if (!buf->u.direct.buf)
121 return -ENOMEM;
122
123 buf->u.direct.map = t;
124
125 while (t & ((1 << buf->page_shift) - 1)) {
126 --buf->page_shift;
127 buf->npages *= 2;
128 }
129
130 memset(buf->u.direct.buf, 0, size);
131 } else {
132 int i;
133
134 buf->nbufs = (size + PAGE_SIZE - 1) / PAGE_SIZE;
135 buf->npages = buf->nbufs;
136 buf->page_shift = PAGE_SHIFT;
137 buf->u.page_list = kzalloc(buf->nbufs * sizeof *buf->u.page_list,
138 GFP_KERNEL);
139 if (!buf->u.page_list)
140 return -ENOMEM;
141
142 for (i = 0; i < buf->nbufs; ++i) {
143 buf->u.page_list[i].buf =
144 dma_alloc_coherent(&dev->pdev->dev, PAGE_SIZE,
145 &t, GFP_KERNEL);
146 if (!buf->u.page_list[i].buf)
147 goto err_free;
148
149 buf->u.page_list[i].map = t;
150
151 memset(buf->u.page_list[i].buf, 0, PAGE_SIZE);
152 }
153 }
154
155 return 0;
156
157err_free:
158 mlx4_buf_free(dev, size, buf);
159
160 return -ENOMEM;
161}
162EXPORT_SYMBOL_GPL(mlx4_buf_alloc);
163
164void mlx4_buf_free(struct mlx4_dev *dev, int size, struct mlx4_buf *buf)
165{
166 int i;
167
168 if (buf->nbufs == 1)
169 dma_free_coherent(&dev->pdev->dev, size, buf->u.direct.buf,
170 buf->u.direct.map);
171 else {
172 for (i = 0; i < buf->nbufs; ++i)
173 dma_free_coherent(&dev->pdev->dev, PAGE_SIZE,
174 buf->u.page_list[i].buf,
175 buf->u.page_list[i].map);
176 kfree(buf->u.page_list);
177 }
178}
179EXPORT_SYMBOL_GPL(mlx4_buf_free);
diff --git a/drivers/net/mlx4/catas.c b/drivers/net/mlx4/catas.c
new file mode 100644
index 000000000000..1bb088aeaf71
--- /dev/null
+++ b/drivers/net/mlx4/catas.c
@@ -0,0 +1,70 @@
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.h"
34
35void mlx4_handle_catas_err(struct mlx4_dev *dev)
36{
37 struct mlx4_priv *priv = mlx4_priv(dev);
38
39 int i;
40
41 mlx4_err(dev, "Catastrophic error detected:\n");
42 for (i = 0; i < priv->fw.catas_size; ++i)
43 mlx4_err(dev, " buf[%02x]: %08x\n",
44 i, swab32(readl(priv->catas_err.map + i)));
45
46 mlx4_dispatch_event(dev, MLX4_EVENT_TYPE_LOCAL_CATAS_ERROR, 0, 0);
47}
48
49void mlx4_map_catas_buf(struct mlx4_dev *dev)
50{
51 struct mlx4_priv *priv = mlx4_priv(dev);
52 unsigned long addr;
53
54 addr = pci_resource_start(dev->pdev, priv->fw.catas_bar) +
55 priv->fw.catas_offset;
56
57 priv->catas_err.map = ioremap(addr, priv->fw.catas_size * 4);
58 if (!priv->catas_err.map)
59 mlx4_warn(dev, "Failed to map catastrophic error buffer at 0x%lx\n",
60 addr);
61
62}
63
64void mlx4_unmap_catas_buf(struct mlx4_dev *dev)
65{
66 struct mlx4_priv *priv = mlx4_priv(dev);
67
68 if (priv->catas_err.map)
69 iounmap(priv->catas_err.map);
70}
diff --git a/drivers/net/mlx4/cmd.c b/drivers/net/mlx4/cmd.c
new file mode 100644
index 000000000000..c1f81a993f5d
--- /dev/null
+++ b/drivers/net/mlx4/cmd.c
@@ -0,0 +1,429 @@
1/*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
4 * Copyright (c) 2005, 2006, 2007 Cisco Systems, Inc. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 */
34
35#include <linux/sched.h>
36#include <linux/pci.h>
37#include <linux/errno.h>
38
39#include <linux/mlx4/cmd.h>
40
41#include <asm/io.h>
42
43#include "mlx4.h"
44
45#define CMD_POLL_TOKEN 0xffff
46
47enum {
48 /* command completed successfully: */
49 CMD_STAT_OK = 0x00,
50 /* Internal error (such as a bus error) occurred while processing command: */
51 CMD_STAT_INTERNAL_ERR = 0x01,
52 /* Operation/command not supported or opcode modifier not supported: */
53 CMD_STAT_BAD_OP = 0x02,
54 /* Parameter not supported or parameter out of range: */
55 CMD_STAT_BAD_PARAM = 0x03,
56 /* System not enabled or bad system state: */
57 CMD_STAT_BAD_SYS_STATE = 0x04,
58 /* Attempt to access reserved or unallocaterd resource: */
59 CMD_STAT_BAD_RESOURCE = 0x05,
60 /* Requested resource is currently executing a command, or is otherwise busy: */
61 CMD_STAT_RESOURCE_BUSY = 0x06,
62 /* Required capability exceeds device limits: */
63 CMD_STAT_EXCEED_LIM = 0x08,
64 /* Resource is not in the appropriate state or ownership: */
65 CMD_STAT_BAD_RES_STATE = 0x09,
66 /* Index out of range: */
67 CMD_STAT_BAD_INDEX = 0x0a,
68 /* FW image corrupted: */
69 CMD_STAT_BAD_NVMEM = 0x0b,
70 /* Attempt to modify a QP/EE which is not in the presumed state: */
71 CMD_STAT_BAD_QP_STATE = 0x10,
72 /* Bad segment parameters (Address/Size): */
73 CMD_STAT_BAD_SEG_PARAM = 0x20,
74 /* Memory Region has Memory Windows bound to: */
75 CMD_STAT_REG_BOUND = 0x21,
76 /* HCA local attached memory not present: */
77 CMD_STAT_LAM_NOT_PRE = 0x22,
78 /* Bad management packet (silently discarded): */
79 CMD_STAT_BAD_PKT = 0x30,
80 /* More outstanding CQEs in CQ than new CQ size: */
81 CMD_STAT_BAD_SIZE = 0x40
82};
83
84enum {
85 HCR_IN_PARAM_OFFSET = 0x00,
86 HCR_IN_MODIFIER_OFFSET = 0x08,
87 HCR_OUT_PARAM_OFFSET = 0x0c,
88 HCR_TOKEN_OFFSET = 0x14,
89 HCR_STATUS_OFFSET = 0x18,
90
91 HCR_OPMOD_SHIFT = 12,
92 HCR_T_BIT = 21,
93 HCR_E_BIT = 22,
94 HCR_GO_BIT = 23
95};
96
97enum {
98 GO_BIT_TIMEOUT = 10000
99};
100
101struct mlx4_cmd_context {
102 struct completion done;
103 int result;
104 int next;
105 u64 out_param;
106 u16 token;
107};
108
109static int mlx4_status_to_errno(u8 status) {
110 static const int trans_table[] = {
111 [CMD_STAT_INTERNAL_ERR] = -EIO,
112 [CMD_STAT_BAD_OP] = -EPERM,
113 [CMD_STAT_BAD_PARAM] = -EINVAL,
114 [CMD_STAT_BAD_SYS_STATE] = -ENXIO,
115 [CMD_STAT_BAD_RESOURCE] = -EBADF,
116 [CMD_STAT_RESOURCE_BUSY] = -EBUSY,
117 [CMD_STAT_EXCEED_LIM] = -ENOMEM,
118 [CMD_STAT_BAD_RES_STATE] = -EBADF,
119 [CMD_STAT_BAD_INDEX] = -EBADF,
120 [CMD_STAT_BAD_NVMEM] = -EFAULT,
121 [CMD_STAT_BAD_QP_STATE] = -EINVAL,
122 [CMD_STAT_BAD_SEG_PARAM] = -EFAULT,
123 [CMD_STAT_REG_BOUND] = -EBUSY,
124 [CMD_STAT_LAM_NOT_PRE] = -EAGAIN,
125 [CMD_STAT_BAD_PKT] = -EINVAL,
126 [CMD_STAT_BAD_SIZE] = -ENOMEM,
127 };
128
129 if (status >= ARRAY_SIZE(trans_table) ||
130 (status != CMD_STAT_OK && trans_table[status] == 0))
131 return -EIO;
132
133 return trans_table[status];
134}
135
136static int cmd_pending(struct mlx4_dev *dev)
137{
138 u32 status = readl(mlx4_priv(dev)->cmd.hcr + HCR_STATUS_OFFSET);
139
140 return (status & swab32(1 << HCR_GO_BIT)) ||
141 (mlx4_priv(dev)->cmd.toggle ==
142 !!(status & swab32(1 << HCR_T_BIT)));
143}
144
145static int mlx4_cmd_post(struct mlx4_dev *dev, u64 in_param, u64 out_param,
146 u32 in_modifier, u8 op_modifier, u16 op, u16 token,
147 int event)
148{
149 struct mlx4_cmd *cmd = &mlx4_priv(dev)->cmd;
150 u32 __iomem *hcr = cmd->hcr;
151 int ret = -EAGAIN;
152 unsigned long end;
153
154 mutex_lock(&cmd->hcr_mutex);
155
156 end = jiffies;
157 if (event)
158 end += HZ * 10;
159
160 while (cmd_pending(dev)) {
161 if (time_after_eq(jiffies, end))
162 goto out;
163 cond_resched();
164 }
165
166 /*
167 * We use writel (instead of something like memcpy_toio)
168 * because writes of less than 32 bits to the HCR don't work
169 * (and some architectures such as ia64 implement memcpy_toio
170 * in terms of writeb).
171 */
172 __raw_writel((__force u32) cpu_to_be32(in_param >> 32), hcr + 0);
173 __raw_writel((__force u32) cpu_to_be32(in_param & 0xfffffffful), hcr + 1);
174 __raw_writel((__force u32) cpu_to_be32(in_modifier), hcr + 2);
175 __raw_writel((__force u32) cpu_to_be32(out_param >> 32), hcr + 3);
176 __raw_writel((__force u32) cpu_to_be32(out_param & 0xfffffffful), hcr + 4);
177 __raw_writel((__force u32) cpu_to_be32(token << 16), hcr + 5);
178
179 /* __raw_writel may not order writes. */
180 wmb();
181
182 __raw_writel((__force u32) cpu_to_be32((1 << HCR_GO_BIT) |
183 (cmd->toggle << HCR_T_BIT) |
184 (event ? (1 << HCR_E_BIT) : 0) |
185 (op_modifier << HCR_OPMOD_SHIFT) |
186 op), hcr + 6);
187 cmd->toggle = cmd->toggle ^ 1;
188
189 ret = 0;
190
191out:
192 mutex_unlock(&cmd->hcr_mutex);
193 return ret;
194}
195
196static int mlx4_cmd_poll(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
197 int out_is_imm, u32 in_modifier, u8 op_modifier,
198 u16 op, unsigned long timeout)
199{
200 struct mlx4_priv *priv = mlx4_priv(dev);
201 void __iomem *hcr = priv->cmd.hcr;
202 int err = 0;
203 unsigned long end;
204
205 down(&priv->cmd.poll_sem);
206
207 err = mlx4_cmd_post(dev, in_param, out_param ? *out_param : 0,
208 in_modifier, op_modifier, op, CMD_POLL_TOKEN, 0);
209 if (err)
210 goto out;
211
212 end = msecs_to_jiffies(timeout) + jiffies;
213 while (cmd_pending(dev) && time_before(jiffies, end))
214 cond_resched();
215
216 if (cmd_pending(dev)) {
217 err = -ETIMEDOUT;
218 goto out;
219 }
220
221 if (out_is_imm)
222 *out_param =
223 (u64) be32_to_cpu((__force __be32)
224 __raw_readl(hcr + HCR_OUT_PARAM_OFFSET)) << 32 |
225 (u64) be32_to_cpu((__force __be32)
226 __raw_readl(hcr + HCR_OUT_PARAM_OFFSET + 4));
227
228 err = mlx4_status_to_errno(be32_to_cpu((__force __be32)
229 __raw_readl(hcr + HCR_STATUS_OFFSET)) >> 24);
230
231out:
232 up(&priv->cmd.poll_sem);
233 return err;
234}
235
236void mlx4_cmd_event(struct mlx4_dev *dev, u16 token, u8 status, u64 out_param)
237{
238 struct mlx4_priv *priv = mlx4_priv(dev);
239 struct mlx4_cmd_context *context =
240 &priv->cmd.context[token & priv->cmd.token_mask];
241
242 /* previously timed out command completing at long last */
243 if (token != context->token)
244 return;
245
246 context->result = mlx4_status_to_errno(status);
247 context->out_param = out_param;
248
249 context->token += priv->cmd.token_mask + 1;
250
251 complete(&context->done);
252}
253
254static int mlx4_cmd_wait(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
255 int out_is_imm, u32 in_modifier, u8 op_modifier,
256 u16 op, unsigned long timeout)
257{
258 struct mlx4_cmd *cmd = &mlx4_priv(dev)->cmd;
259 struct mlx4_cmd_context *context;
260 int err = 0;
261
262 down(&cmd->event_sem);
263
264 spin_lock(&cmd->context_lock);
265 BUG_ON(cmd->free_head < 0);
266 context = &cmd->context[cmd->free_head];
267 cmd->free_head = context->next;
268 spin_unlock(&cmd->context_lock);
269
270 init_completion(&context->done);
271
272 mlx4_cmd_post(dev, in_param, out_param ? *out_param : 0,
273 in_modifier, op_modifier, op, context->token, 1);
274
275 if (!wait_for_completion_timeout(&context->done, msecs_to_jiffies(timeout))) {
276 err = -EBUSY;
277 goto out;
278 }
279
280 err = context->result;
281 if (err)
282 goto out;
283
284 if (out_is_imm)
285 *out_param = context->out_param;
286
287out:
288 spin_lock(&cmd->context_lock);
289 context->next = cmd->free_head;
290 cmd->free_head = context - cmd->context;
291 spin_unlock(&cmd->context_lock);
292
293 up(&cmd->event_sem);
294 return err;
295}
296
297int __mlx4_cmd(struct mlx4_dev *dev, u64 in_param, u64 *out_param,
298 int out_is_imm, u32 in_modifier, u8 op_modifier,
299 u16 op, unsigned long timeout)
300{
301 if (mlx4_priv(dev)->cmd.use_events)
302 return mlx4_cmd_wait(dev, in_param, out_param, out_is_imm,
303 in_modifier, op_modifier, op, timeout);
304 else
305 return mlx4_cmd_poll(dev, in_param, out_param, out_is_imm,
306 in_modifier, op_modifier, op, timeout);
307}
308EXPORT_SYMBOL_GPL(__mlx4_cmd);
309
310int mlx4_cmd_init(struct mlx4_dev *dev)
311{
312 struct mlx4_priv *priv = mlx4_priv(dev);
313
314 mutex_init(&priv->cmd.hcr_mutex);
315 sema_init(&priv->cmd.poll_sem, 1);
316 priv->cmd.use_events = 0;
317 priv->cmd.toggle = 1;
318
319 priv->cmd.hcr = ioremap(pci_resource_start(dev->pdev, 0) + MLX4_HCR_BASE,
320 MLX4_HCR_SIZE);
321 if (!priv->cmd.hcr) {
322 mlx4_err(dev, "Couldn't map command register.");
323 return -ENOMEM;
324 }
325
326 priv->cmd.pool = pci_pool_create("mlx4_cmd", dev->pdev,
327 MLX4_MAILBOX_SIZE,
328 MLX4_MAILBOX_SIZE, 0);
329 if (!priv->cmd.pool) {
330 iounmap(priv->cmd.hcr);
331 return -ENOMEM;
332 }
333
334 return 0;
335}
336
337void mlx4_cmd_cleanup(struct mlx4_dev *dev)
338{
339 struct mlx4_priv *priv = mlx4_priv(dev);
340
341 pci_pool_destroy(priv->cmd.pool);
342 iounmap(priv->cmd.hcr);
343}
344
345/*
346 * Switch to using events to issue FW commands (can only be called
347 * after event queue for command events has been initialized).
348 */
349int mlx4_cmd_use_events(struct mlx4_dev *dev)
350{
351 struct mlx4_priv *priv = mlx4_priv(dev);
352 int i;
353
354 priv->cmd.context = kmalloc(priv->cmd.max_cmds *
355 sizeof (struct mlx4_cmd_context),
356 GFP_KERNEL);
357 if (!priv->cmd.context)
358 return -ENOMEM;
359
360 for (i = 0; i < priv->cmd.max_cmds; ++i) {
361 priv->cmd.context[i].token = i;
362 priv->cmd.context[i].next = i + 1;
363 }
364
365 priv->cmd.context[priv->cmd.max_cmds - 1].next = -1;
366 priv->cmd.free_head = 0;
367
368 sema_init(&priv->cmd.event_sem, priv->cmd.max_cmds);
369 spin_lock_init(&priv->cmd.context_lock);
370
371 for (priv->cmd.token_mask = 1;
372 priv->cmd.token_mask < priv->cmd.max_cmds;
373 priv->cmd.token_mask <<= 1)
374 ; /* nothing */
375 --priv->cmd.token_mask;
376
377 priv->cmd.use_events = 1;
378
379 down(&priv->cmd.poll_sem);
380
381 return 0;
382}
383
384/*
385 * Switch back to polling (used when shutting down the device)
386 */
387void mlx4_cmd_use_polling(struct mlx4_dev *dev)
388{
389 struct mlx4_priv *priv = mlx4_priv(dev);
390 int i;
391
392 priv->cmd.use_events = 0;
393
394 for (i = 0; i < priv->cmd.max_cmds; ++i)
395 down(&priv->cmd.event_sem);
396
397 kfree(priv->cmd.context);
398
399 up(&priv->cmd.poll_sem);
400}
401
402struct mlx4_cmd_mailbox *mlx4_alloc_cmd_mailbox(struct mlx4_dev *dev)
403{
404 struct mlx4_cmd_mailbox *mailbox;
405
406 mailbox = kmalloc(sizeof *mailbox, GFP_KERNEL);
407 if (!mailbox)
408 return ERR_PTR(-ENOMEM);
409
410 mailbox->buf = pci_pool_alloc(mlx4_priv(dev)->cmd.pool, GFP_KERNEL,
411 &mailbox->dma);
412 if (!mailbox->buf) {
413 kfree(mailbox);
414 return ERR_PTR(-ENOMEM);
415 }
416
417 return mailbox;
418}
419EXPORT_SYMBOL_GPL(mlx4_alloc_cmd_mailbox);
420
421void mlx4_free_cmd_mailbox(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox)
422{
423 if (!mailbox)
424 return;
425
426 pci_pool_free(mlx4_priv(dev)->cmd.pool, mailbox->buf, mailbox->dma);
427 kfree(mailbox);
428}
429EXPORT_SYMBOL_GPL(mlx4_free_cmd_mailbox);
diff --git a/drivers/net/mlx4/cq.c b/drivers/net/mlx4/cq.c
new file mode 100644
index 000000000000..437d78ad0912
--- /dev/null
+++ b/drivers/net/mlx4/cq.c
@@ -0,0 +1,254 @@
1/*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
4 * Copyright (c) 2005, 2006, 2007 Cisco Systems, Inc. All rights reserved.
5 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
6 * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
7 *
8 * This software is available to you under a choice of one of two
9 * licenses. You may choose to be licensed under the terms of the GNU
10 * General Public License (GPL) Version 2, available from the file
11 * COPYING in the main directory of this source tree, or the
12 * OpenIB.org BSD license below:
13 *
14 * Redistribution and use in source and binary forms, with or
15 * without modification, are permitted provided that the following
16 * conditions are met:
17 *
18 * - Redistributions of source code must retain the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer.
21 *
22 * - Redistributions in binary form must reproduce the above
23 * copyright notice, this list of conditions and the following
24 * disclaimer in the documentation and/or other materials
25 * provided with the distribution.
26 *
27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
28 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
29 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
30 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
31 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
32 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
33 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 * SOFTWARE.
35 */
36
37#include <linux/init.h>
38#include <linux/hardirq.h>
39
40#include <linux/mlx4/cmd.h>
41
42#include "mlx4.h"
43#include "icm.h"
44
45struct mlx4_cq_context {
46 __be32 flags;
47 u16 reserved1[3];
48 __be16 page_offset;
49 __be32 logsize_usrpage;
50 u8 reserved2;
51 u8 cq_period;
52 u8 reserved3;
53 u8 cq_max_count;
54 u8 reserved4[3];
55 u8 comp_eqn;
56 u8 log_page_size;
57 u8 reserved5[2];
58 u8 mtt_base_addr_h;
59 __be32 mtt_base_addr_l;
60 __be32 last_notified_index;
61 __be32 solicit_producer_index;
62 __be32 consumer_index;
63 __be32 producer_index;
64 u8 reserved6[2];
65 __be64 db_rec_addr;
66};
67
68#define MLX4_CQ_STATUS_OK ( 0 << 28)
69#define MLX4_CQ_STATUS_OVERFLOW ( 9 << 28)
70#define MLX4_CQ_STATUS_WRITE_FAIL (10 << 28)
71#define MLX4_CQ_FLAG_CC ( 1 << 18)
72#define MLX4_CQ_FLAG_OI ( 1 << 17)
73#define MLX4_CQ_STATE_ARMED ( 9 << 8)
74#define MLX4_CQ_STATE_ARMED_SOL ( 6 << 8)
75#define MLX4_EQ_STATE_FIRED (10 << 8)
76
77void mlx4_cq_completion(struct mlx4_dev *dev, u32 cqn)
78{
79 struct mlx4_cq *cq;
80
81 cq = radix_tree_lookup(&mlx4_priv(dev)->cq_table.tree,
82 cqn & (dev->caps.num_cqs - 1));
83 if (!cq) {
84 mlx4_warn(dev, "Completion event for bogus CQ %08x\n", cqn);
85 return;
86 }
87
88 ++cq->arm_sn;
89
90 cq->comp(cq);
91}
92
93void mlx4_cq_event(struct mlx4_dev *dev, u32 cqn, int event_type)
94{
95 struct mlx4_cq_table *cq_table = &mlx4_priv(dev)->cq_table;
96 struct mlx4_cq *cq;
97
98 spin_lock(&cq_table->lock);
99
100 cq = radix_tree_lookup(&cq_table->tree, cqn & (dev->caps.num_cqs - 1));
101 if (cq)
102 atomic_inc(&cq->refcount);
103
104 spin_unlock(&cq_table->lock);
105
106 if (!cq) {
107 mlx4_warn(dev, "Async event for bogus CQ %08x\n", cqn);
108 return;
109 }
110
111 cq->event(cq, event_type);
112
113 if (atomic_dec_and_test(&cq->refcount))
114 complete(&cq->free);
115}
116
117static int mlx4_SW2HW_CQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
118 int cq_num)
119{
120 return mlx4_cmd(dev, mailbox->dma, cq_num, 0, MLX4_CMD_SW2HW_CQ,
121 MLX4_CMD_TIME_CLASS_A);
122}
123
124static int mlx4_HW2SW_CQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
125 int cq_num)
126{
127 return mlx4_cmd_box(dev, 0, mailbox ? mailbox->dma : 0, cq_num,
128 mailbox ? 0 : 1, MLX4_CMD_HW2SW_CQ,
129 MLX4_CMD_TIME_CLASS_A);
130}
131
132int mlx4_cq_alloc(struct mlx4_dev *dev, int nent, struct mlx4_mtt *mtt,
133 struct mlx4_uar *uar, u64 db_rec, struct mlx4_cq *cq)
134{
135 struct mlx4_priv *priv = mlx4_priv(dev);
136 struct mlx4_cq_table *cq_table = &priv->cq_table;
137 struct mlx4_cmd_mailbox *mailbox;
138 struct mlx4_cq_context *cq_context;
139 u64 mtt_addr;
140 int err;
141
142 cq->cqn = mlx4_bitmap_alloc(&cq_table->bitmap);
143 if (cq->cqn == -1)
144 return -ENOMEM;
145
146 err = mlx4_table_get(dev, &cq_table->table, cq->cqn);
147 if (err)
148 goto err_out;
149
150 err = mlx4_table_get(dev, &cq_table->cmpt_table, cq->cqn);
151 if (err)
152 goto err_put;
153
154 spin_lock_irq(&cq_table->lock);
155 err = radix_tree_insert(&cq_table->tree, cq->cqn, cq);
156 spin_unlock_irq(&cq_table->lock);
157 if (err)
158 goto err_cmpt_put;
159
160 mailbox = mlx4_alloc_cmd_mailbox(dev);
161 if (IS_ERR(mailbox)) {
162 err = PTR_ERR(mailbox);
163 goto err_radix;
164 }
165
166 cq_context = mailbox->buf;
167 memset(cq_context, 0, sizeof *cq_context);
168
169 cq_context->logsize_usrpage = cpu_to_be32((ilog2(nent) << 24) | uar->index);
170 cq_context->comp_eqn = priv->eq_table.eq[MLX4_EQ_COMP].eqn;
171 cq_context->log_page_size = mtt->page_shift - MLX4_ICM_PAGE_SHIFT;
172
173 mtt_addr = mlx4_mtt_addr(dev, mtt);
174 cq_context->mtt_base_addr_h = mtt_addr >> 32;
175 cq_context->mtt_base_addr_l = cpu_to_be32(mtt_addr & 0xffffffff);
176 cq_context->db_rec_addr = cpu_to_be64(db_rec);
177
178 err = mlx4_SW2HW_CQ(dev, mailbox, cq->cqn);
179 mlx4_free_cmd_mailbox(dev, mailbox);
180 if (err)
181 goto err_radix;
182
183 cq->cons_index = 0;
184 cq->arm_sn = 1;
185 cq->uar = uar;
186 atomic_set(&cq->refcount, 1);
187 init_completion(&cq->free);
188
189 return 0;
190
191err_radix:
192 spin_lock_irq(&cq_table->lock);
193 radix_tree_delete(&cq_table->tree, cq->cqn);
194 spin_unlock_irq(&cq_table->lock);
195
196err_cmpt_put:
197 mlx4_table_put(dev, &cq_table->cmpt_table, cq->cqn);
198
199err_put:
200 mlx4_table_put(dev, &cq_table->table, cq->cqn);
201
202err_out:
203 mlx4_bitmap_free(&cq_table->bitmap, cq->cqn);
204
205 return err;
206}
207EXPORT_SYMBOL_GPL(mlx4_cq_alloc);
208
209void mlx4_cq_free(struct mlx4_dev *dev, struct mlx4_cq *cq)
210{
211 struct mlx4_priv *priv = mlx4_priv(dev);
212 struct mlx4_cq_table *cq_table = &priv->cq_table;
213 int err;
214
215 err = mlx4_HW2SW_CQ(dev, NULL, cq->cqn);
216 if (err)
217 mlx4_warn(dev, "HW2SW_CQ failed (%d) for CQN %06x\n", err, cq->cqn);
218
219 synchronize_irq(priv->eq_table.eq[MLX4_EQ_COMP].irq);
220
221 spin_lock_irq(&cq_table->lock);
222 radix_tree_delete(&cq_table->tree, cq->cqn);
223 spin_unlock_irq(&cq_table->lock);
224
225 if (atomic_dec_and_test(&cq->refcount))
226 complete(&cq->free);
227 wait_for_completion(&cq->free);
228
229 mlx4_table_put(dev, &cq_table->table, cq->cqn);
230 mlx4_bitmap_free(&cq_table->bitmap, cq->cqn);
231}
232EXPORT_SYMBOL_GPL(mlx4_cq_free);
233
234int __devinit mlx4_init_cq_table(struct mlx4_dev *dev)
235{
236 struct mlx4_cq_table *cq_table = &mlx4_priv(dev)->cq_table;
237 int err;
238
239 spin_lock_init(&cq_table->lock);
240 INIT_RADIX_TREE(&cq_table->tree, GFP_ATOMIC);
241
242 err = mlx4_bitmap_init(&cq_table->bitmap, dev->caps.num_cqs,
243 dev->caps.num_cqs - 1, dev->caps.reserved_cqs);
244 if (err)
245 return err;
246
247 return 0;
248}
249
250void mlx4_cleanup_cq_table(struct mlx4_dev *dev)
251{
252 /* Nothing to do to clean up radix_tree */
253 mlx4_bitmap_cleanup(&mlx4_priv(dev)->cq_table.bitmap);
254}
diff --git a/drivers/net/mlx4/eq.c b/drivers/net/mlx4/eq.c
new file mode 100644
index 000000000000..acf1c801a1b8
--- /dev/null
+++ b/drivers/net/mlx4/eq.c
@@ -0,0 +1,696 @@
1/*
2 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
3 * Copyright (c) 2005, 2006, 2007 Cisco Systems, Inc. All rights reserved.
4 *
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
10 *
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
13 * conditions are met:
14 *
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * SOFTWARE.
32 */
33
34#include <linux/init.h>
35#include <linux/interrupt.h>
36
37#include <linux/mlx4/cmd.h>
38
39#include "mlx4.h"
40#include "fw.h"
41
42enum {
43 MLX4_NUM_ASYNC_EQE = 0x100,
44 MLX4_NUM_SPARE_EQE = 0x80,
45 MLX4_EQ_ENTRY_SIZE = 0x20
46};
47
48/*
49 * Must be packed because start is 64 bits but only aligned to 32 bits.
50 */
51struct mlx4_eq_context {
52 __be32 flags;
53 u16 reserved1[3];
54 __be16 page_offset;
55 u8 log_eq_size;
56 u8 reserved2[4];
57 u8 eq_period;
58 u8 reserved3;
59 u8 eq_max_count;
60 u8 reserved4[3];
61 u8 intr;
62 u8 log_page_size;
63 u8 reserved5[2];
64 u8 mtt_base_addr_h;
65 __be32 mtt_base_addr_l;
66 u32 reserved6[2];
67 __be32 consumer_index;
68 __be32 producer_index;
69 u32 reserved7[4];
70};
71
72#define MLX4_EQ_STATUS_OK ( 0 << 28)
73#define MLX4_EQ_STATUS_WRITE_FAIL (10 << 28)
74#define MLX4_EQ_OWNER_SW ( 0 << 24)
75#define MLX4_EQ_OWNER_HW ( 1 << 24)
76#define MLX4_EQ_FLAG_EC ( 1 << 18)
77#define MLX4_EQ_FLAG_OI ( 1 << 17)
78#define MLX4_EQ_STATE_ARMED ( 9 << 8)
79#define MLX4_EQ_STATE_FIRED (10 << 8)
80#define MLX4_EQ_STATE_ALWAYS_ARMED (11 << 8)
81
82#define MLX4_ASYNC_EVENT_MASK ((1ull << MLX4_EVENT_TYPE_PATH_MIG) | \
83 (1ull << MLX4_EVENT_TYPE_COMM_EST) | \
84 (1ull << MLX4_EVENT_TYPE_SQ_DRAINED) | \
85 (1ull << MLX4_EVENT_TYPE_CQ_ERROR) | \
86 (1ull << MLX4_EVENT_TYPE_WQ_CATAS_ERROR) | \
87 (1ull << MLX4_EVENT_TYPE_EEC_CATAS_ERROR) | \
88 (1ull << MLX4_EVENT_TYPE_PATH_MIG_FAILED) | \
89 (1ull << MLX4_EVENT_TYPE_WQ_INVAL_REQ_ERROR) | \
90 (1ull << MLX4_EVENT_TYPE_WQ_ACCESS_ERROR) | \
91 (1ull << MLX4_EVENT_TYPE_LOCAL_CATAS_ERROR) | \
92 (1ull << MLX4_EVENT_TYPE_PORT_CHANGE) | \
93 (1ull << MLX4_EVENT_TYPE_ECC_DETECT) | \
94 (1ull << MLX4_EVENT_TYPE_SRQ_CATAS_ERROR) | \
95 (1ull << MLX4_EVENT_TYPE_SRQ_QP_LAST_WQE) | \
96 (1ull << MLX4_EVENT_TYPE_SRQ_LIMIT) | \
97 (1ull << MLX4_EVENT_TYPE_CMD))
98#define MLX4_CATAS_EVENT_MASK (1ull << MLX4_EVENT_TYPE_LOCAL_CATAS_ERROR)
99
100struct mlx4_eqe {
101 u8 reserved1;
102 u8 type;
103 u8 reserved2;
104 u8 subtype;
105 union {
106 u32 raw[6];
107 struct {
108 __be32 cqn;
109 } __attribute__((packed)) comp;
110 struct {
111 u16 reserved1;
112 __be16 token;
113 u32 reserved2;
114 u8 reserved3[3];
115 u8 status;
116 __be64 out_param;
117 } __attribute__((packed)) cmd;
118 struct {
119 __be32 qpn;
120 } __attribute__((packed)) qp;
121 struct {
122 __be32 srqn;
123 } __attribute__((packed)) srq;
124 struct {
125 __be32 cqn;
126 u32 reserved1;
127 u8 reserved2[3];
128 u8 syndrome;
129 } __attribute__((packed)) cq_err;
130 struct {
131 u32 reserved1[2];
132 __be32 port;
133 } __attribute__((packed)) port_change;
134 } event;
135 u8 reserved3[3];
136 u8 owner;
137} __attribute__((packed));
138
139static void eq_set_ci(struct mlx4_eq *eq, int req_not)
140{
141 __raw_writel((__force u32) cpu_to_be32((eq->cons_index & 0xffffff) |
142 req_not << 31),
143 eq->doorbell);
144 /* We still want ordering, just not swabbing, so add a barrier */
145 mb();
146}
147
148static struct mlx4_eqe *get_eqe(struct mlx4_eq *eq, u32 entry)
149{
150 unsigned long off = (entry & (eq->nent - 1)) * MLX4_EQ_ENTRY_SIZE;
151 return eq->page_list[off / PAGE_SIZE].buf + off % PAGE_SIZE;
152}
153
154static struct mlx4_eqe *next_eqe_sw(struct mlx4_eq *eq)
155{
156 struct mlx4_eqe *eqe = get_eqe(eq, eq->cons_index);
157 return !!(eqe->owner & 0x80) ^ !!(eq->cons_index & eq->nent) ? NULL : eqe;
158}
159
160static int mlx4_eq_int(struct mlx4_dev *dev, struct mlx4_eq *eq)
161{
162 struct mlx4_eqe *eqe;
163 int cqn;
164 int eqes_found = 0;
165 int set_ci = 0;
166
167 while ((eqe = next_eqe_sw(eq))) {
168 /*
169 * Make sure we read EQ entry contents after we've
170 * checked the ownership bit.
171 */
172 rmb();
173
174 switch (eqe->type) {
175 case MLX4_EVENT_TYPE_COMP:
176 cqn = be32_to_cpu(eqe->event.comp.cqn) & 0xffffff;
177 mlx4_cq_completion(dev, cqn);
178 break;
179
180 case MLX4_EVENT_TYPE_PATH_MIG:
181 case MLX4_EVENT_TYPE_COMM_EST:
182 case MLX4_EVENT_TYPE_SQ_DRAINED:
183 case MLX4_EVENT_TYPE_SRQ_QP_LAST_WQE:
184 case MLX4_EVENT_TYPE_WQ_CATAS_ERROR:
185 case MLX4_EVENT_TYPE_PATH_MIG_FAILED:
186 case MLX4_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
187 case MLX4_EVENT_TYPE_WQ_ACCESS_ERROR:
188 mlx4_qp_event(dev, be32_to_cpu(eqe->event.qp.qpn) & 0xffffff,
189 eqe->type);
190 break;
191
192 case MLX4_EVENT_TYPE_SRQ_LIMIT:
193 case MLX4_EVENT_TYPE_SRQ_CATAS_ERROR:
194 mlx4_srq_event(dev, be32_to_cpu(eqe->event.srq.srqn) & 0xffffff,
195 eqe->type);
196 break;
197
198 case MLX4_EVENT_TYPE_CMD:
199 mlx4_cmd_event(dev,
200 be16_to_cpu(eqe->event.cmd.token),
201 eqe->event.cmd.status,
202 be64_to_cpu(eqe->event.cmd.out_param));
203 break;
204
205 case MLX4_EVENT_TYPE_PORT_CHANGE:
206 mlx4_dispatch_event(dev, eqe->type, eqe->subtype,
207 be32_to_cpu(eqe->event.port_change.port) >> 28);
208 break;
209
210 case MLX4_EVENT_TYPE_CQ_ERROR:
211 mlx4_warn(dev, "CQ %s on CQN %06x\n",
212 eqe->event.cq_err.syndrome == 1 ?
213 "overrun" : "access violation",
214 be32_to_cpu(eqe->event.cq_err.cqn) & 0xffffff);
215 mlx4_cq_event(dev, be32_to_cpu(eqe->event.cq_err.cqn),
216 eqe->type);
217 break;
218
219 case MLX4_EVENT_TYPE_EQ_OVERFLOW:
220 mlx4_warn(dev, "EQ overrun on EQN %d\n", eq->eqn);
221 break;
222
223 case MLX4_EVENT_TYPE_EEC_CATAS_ERROR:
224 case MLX4_EVENT_TYPE_ECC_DETECT:
225 default:
226 mlx4_warn(dev, "Unhandled event %02x(%02x) on EQ %d at index %u\n",
227 eqe->type, eqe->subtype, eq->eqn, eq->cons_index);
228 break;
229 };
230
231 ++eq->cons_index;
232 eqes_found = 1;
233 ++set_ci;
234
235 /*
236 * The HCA will think the queue has overflowed if we
237 * don't tell it we've been processing events. We
238 * create our EQs with MLX4_NUM_SPARE_EQE extra
239 * entries, so we must update our consumer index at
240 * least that often.
241 */
242 if (unlikely(set_ci >= MLX4_NUM_SPARE_EQE)) {
243 /*
244 * Conditional on hca_type is OK here because
245 * this is a rare case, not the fast path.
246 */
247 eq_set_ci(eq, 0);
248 set_ci = 0;
249 }
250 }
251
252 eq_set_ci(eq, 1);
253
254 return eqes_found;
255}
256
257static irqreturn_t mlx4_interrupt(int irq, void *dev_ptr)
258{
259 struct mlx4_dev *dev = dev_ptr;
260 struct mlx4_priv *priv = mlx4_priv(dev);
261 int work = 0;
262 int i;
263
264 writel(priv->eq_table.clr_mask, priv->eq_table.clr_int);
265
266 for (i = 0; i < MLX4_EQ_CATAS; ++i)
267 work |= mlx4_eq_int(dev, &priv->eq_table.eq[i]);
268
269 return IRQ_RETVAL(work);
270}
271
272static irqreturn_t mlx4_msi_x_interrupt(int irq, void *eq_ptr)
273{
274 struct mlx4_eq *eq = eq_ptr;
275 struct mlx4_dev *dev = eq->dev;
276
277 mlx4_eq_int(dev, eq);
278
279 /* MSI-X vectors always belong to us */
280 return IRQ_HANDLED;
281}
282
283static irqreturn_t mlx4_catas_interrupt(int irq, void *dev_ptr)
284{
285 mlx4_handle_catas_err(dev_ptr);
286
287 /* MSI-X vectors always belong to us */
288 return IRQ_HANDLED;
289}
290
291static int mlx4_MAP_EQ(struct mlx4_dev *dev, u64 event_mask, int unmap,
292 int eq_num)
293{
294 return mlx4_cmd(dev, event_mask, (unmap << 31) | eq_num,
295 0, MLX4_CMD_MAP_EQ, MLX4_CMD_TIME_CLASS_B);
296}
297
298static int mlx4_SW2HW_EQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
299 int eq_num)
300{
301 return mlx4_cmd(dev, mailbox->dma, eq_num, 0, MLX4_CMD_SW2HW_EQ,
302 MLX4_CMD_TIME_CLASS_A);
303}
304
305static int mlx4_HW2SW_EQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
306 int eq_num)
307{
308 return mlx4_cmd_box(dev, 0, mailbox->dma, eq_num, 0, MLX4_CMD_HW2SW_EQ,
309 MLX4_CMD_TIME_CLASS_A);
310}
311
312static void __devinit __iomem *mlx4_get_eq_uar(struct mlx4_dev *dev,
313 struct mlx4_eq *eq)
314{
315 struct mlx4_priv *priv = mlx4_priv(dev);
316 int index;
317
318 index = eq->eqn / 4 - dev->caps.reserved_eqs / 4;
319
320 if (!priv->eq_table.uar_map[index]) {
321 priv->eq_table.uar_map[index] =
322 ioremap(pci_resource_start(dev->pdev, 2) +
323 ((eq->eqn / 4) << PAGE_SHIFT),
324 PAGE_SIZE);
325 if (!priv->eq_table.uar_map[index]) {
326 mlx4_err(dev, "Couldn't map EQ doorbell for EQN 0x%06x\n",
327 eq->eqn);
328 return NULL;
329 }
330 }
331
332 return priv->eq_table.uar_map[index] + 0x800 + 8 * (eq->eqn % 4);
333}
334
335static int __devinit mlx4_create_eq(struct mlx4_dev *dev, int nent,
336 u8 intr, struct mlx4_eq *eq)
337{
338 struct mlx4_priv *priv = mlx4_priv(dev);
339 struct mlx4_cmd_mailbox *mailbox;
340 struct mlx4_eq_context *eq_context;
341 int npages;
342 u64 *dma_list = NULL;
343 dma_addr_t t;
344 u64 mtt_addr;
345 int err = -ENOMEM;
346 int i;
347
348 eq->dev = dev;
349 eq->nent = roundup_pow_of_two(max(nent, 2));
350 npages = PAGE_ALIGN(eq->nent * MLX4_EQ_ENTRY_SIZE) / PAGE_SIZE;
351
352 eq->page_list = kmalloc(npages * sizeof *eq->page_list,
353 GFP_KERNEL);
354 if (!eq->page_list)
355 goto err_out;
356
357 for (i = 0; i < npages; ++i)
358 eq->page_list[i].buf = NULL;
359
360 dma_list = kmalloc(npages * sizeof *dma_list, GFP_KERNEL);
361 if (!dma_list)
362 goto err_out_free;
363
364 mailbox = mlx4_alloc_cmd_mailbox(dev);
365 if (IS_ERR(mailbox))
366 goto err_out_free;
367 eq_context = mailbox->buf;
368
369 for (i = 0; i < npages; ++i) {
370 eq->page_list[i].buf = dma_alloc_coherent(&dev->pdev->dev,
371 PAGE_SIZE, &t, GFP_KERNEL);
372 if (!eq->page_list[i].buf)
373 goto err_out_free_pages;
374
375 dma_list[i] = t;
376 eq->page_list[i].map = t;
377
378 memset(eq->page_list[i].buf, 0, PAGE_SIZE);
379 }
380
381 eq->eqn = mlx4_bitmap_alloc(&priv->eq_table.bitmap);
382 if (eq->eqn == -1)
383 goto err_out_free_pages;
384
385 eq->doorbell = mlx4_get_eq_uar(dev, eq);
386 if (!eq->doorbell) {
387 err = -ENOMEM;
388 goto err_out_free_eq;
389 }
390
391 err = mlx4_mtt_init(dev, npages, PAGE_SHIFT, &eq->mtt);
392 if (err)
393 goto err_out_free_eq;
394
395 err = mlx4_write_mtt(dev, &eq->mtt, 0, npages, dma_list);
396 if (err)
397 goto err_out_free_mtt;
398
399 memset(eq_context, 0, sizeof *eq_context);
400 eq_context->flags = cpu_to_be32(MLX4_EQ_STATUS_OK |
401 MLX4_EQ_STATE_ARMED);
402 eq_context->log_eq_size = ilog2(eq->nent);
403 eq_context->intr = intr;
404 eq_context->log_page_size = PAGE_SHIFT - MLX4_ICM_PAGE_SHIFT;
405
406 mtt_addr = mlx4_mtt_addr(dev, &eq->mtt);
407 eq_context->mtt_base_addr_h = mtt_addr >> 32;
408 eq_context->mtt_base_addr_l = cpu_to_be32(mtt_addr & 0xffffffff);
409
410 err = mlx4_SW2HW_EQ(dev, mailbox, eq->eqn);
411 if (err) {
412 mlx4_warn(dev, "SW2HW_EQ failed (%d)\n", err);
413 goto err_out_free_mtt;
414 }
415
416 kfree(dma_list);
417 mlx4_free_cmd_mailbox(dev, mailbox);
418
419 eq->cons_index = 0;
420
421 return err;
422
423err_out_free_mtt:
424 mlx4_mtt_cleanup(dev, &eq->mtt);
425
426err_out_free_eq:
427 mlx4_bitmap_free(&priv->eq_table.bitmap, eq->eqn);
428
429err_out_free_pages:
430 for (i = 0; i < npages; ++i)
431 if (eq->page_list[i].buf)
432 dma_free_coherent(&dev->pdev->dev, PAGE_SIZE,
433 eq->page_list[i].buf,
434 eq->page_list[i].map);
435
436 mlx4_free_cmd_mailbox(dev, mailbox);
437
438err_out_free:
439 kfree(eq->page_list);
440 kfree(dma_list);
441
442err_out:
443 return err;
444}
445
446static void mlx4_free_eq(struct mlx4_dev *dev,
447 struct mlx4_eq *eq)
448{
449 struct mlx4_priv *priv = mlx4_priv(dev);
450 struct mlx4_cmd_mailbox *mailbox;
451 int err;
452 int npages = PAGE_ALIGN(MLX4_EQ_ENTRY_SIZE * eq->nent) / PAGE_SIZE;
453 int i;
454
455 mailbox = mlx4_alloc_cmd_mailbox(dev);
456 if (IS_ERR(mailbox))
457 return;
458
459 err = mlx4_HW2SW_EQ(dev, mailbox, eq->eqn);
460 if (err)
461 mlx4_warn(dev, "HW2SW_EQ failed (%d)\n", err);
462
463 if (0) {
464 mlx4_dbg(dev, "Dumping EQ context %02x:\n", eq->eqn);
465 for (i = 0; i < sizeof (struct mlx4_eq_context) / 4; ++i) {
466 if (i % 4 == 0)
467 printk("[%02x] ", i * 4);
468 printk(" %08x", be32_to_cpup(mailbox->buf + i * 4));
469 if ((i + 1) % 4 == 0)
470 printk("\n");
471 }
472 }
473
474 mlx4_mtt_cleanup(dev, &eq->mtt);
475 for (i = 0; i < npages; ++i)
476 pci_free_consistent(dev->pdev, PAGE_SIZE,
477 eq->page_list[i].buf,
478 eq->page_list[i].map);
479
480 kfree(eq->page_list);
481 mlx4_bitmap_free(&priv->eq_table.bitmap, eq->eqn);
482 mlx4_free_cmd_mailbox(dev, mailbox);
483}
484
485static void mlx4_free_irqs(struct mlx4_dev *dev)
486{
487 struct mlx4_eq_table *eq_table = &mlx4_priv(dev)->eq_table;
488 int i;
489
490 if (eq_table->have_irq)
491 free_irq(dev->pdev->irq, dev);
492 for (i = 0; i < MLX4_NUM_EQ; ++i)
493 if (eq_table->eq[i].have_irq)
494 free_irq(eq_table->eq[i].irq, eq_table->eq + i);
495}
496
497static int __devinit mlx4_map_clr_int(struct mlx4_dev *dev)
498{
499 struct mlx4_priv *priv = mlx4_priv(dev);
500
501 priv->clr_base = ioremap(pci_resource_start(dev->pdev, priv->fw.clr_int_bar) +
502 priv->fw.clr_int_base, MLX4_CLR_INT_SIZE);
503 if (!priv->clr_base) {
504 mlx4_err(dev, "Couldn't map interrupt clear register, aborting.\n");
505 return -ENOMEM;
506 }
507
508 return 0;
509}
510
511static void mlx4_unmap_clr_int(struct mlx4_dev *dev)
512{
513 struct mlx4_priv *priv = mlx4_priv(dev);
514
515 iounmap(priv->clr_base);
516}
517
518int __devinit mlx4_map_eq_icm(struct mlx4_dev *dev, u64 icm_virt)
519{
520 struct mlx4_priv *priv = mlx4_priv(dev);
521 int ret;
522
523 /*
524 * We assume that mapping one page is enough for the whole EQ
525 * context table. This is fine with all current HCAs, because
526 * we only use 32 EQs and each EQ uses 64 bytes of context
527 * memory, or 1 KB total.
528 */
529 priv->eq_table.icm_virt = icm_virt;
530 priv->eq_table.icm_page = alloc_page(GFP_HIGHUSER);
531 if (!priv->eq_table.icm_page)
532 return -ENOMEM;
533 priv->eq_table.icm_dma = pci_map_page(dev->pdev, priv->eq_table.icm_page, 0,
534 PAGE_SIZE, PCI_DMA_BIDIRECTIONAL);
535 if (pci_dma_mapping_error(priv->eq_table.icm_dma)) {
536 __free_page(priv->eq_table.icm_page);
537 return -ENOMEM;
538 }
539
540 ret = mlx4_MAP_ICM_page(dev, priv->eq_table.icm_dma, icm_virt);
541 if (ret) {
542 pci_unmap_page(dev->pdev, priv->eq_table.icm_dma, PAGE_SIZE,
543 PCI_DMA_BIDIRECTIONAL);
544 __free_page(priv->eq_table.icm_page);
545 }
546
547 return ret;
548}
549
550void mlx4_unmap_eq_icm(struct mlx4_dev *dev)
551{
552 struct mlx4_priv *priv = mlx4_priv(dev);
553
554 mlx4_UNMAP_ICM(dev, priv->eq_table.icm_virt, 1);
555 pci_unmap_page(dev->pdev, priv->eq_table.icm_dma, PAGE_SIZE,
556 PCI_DMA_BIDIRECTIONAL);
557 __free_page(priv->eq_table.icm_page);
558}
559
560int __devinit mlx4_init_eq_table(struct mlx4_dev *dev)
561{
562 struct mlx4_priv *priv = mlx4_priv(dev);
563 int err;
564 int i;
565
566 err = mlx4_bitmap_init(&priv->eq_table.bitmap, dev->caps.num_eqs,
567 dev->caps.num_eqs - 1, dev->caps.reserved_eqs);
568 if (err)
569 return err;
570
571 for (i = 0; i < ARRAY_SIZE(priv->eq_table.uar_map); ++i)
572 priv->eq_table.uar_map[i] = NULL;
573
574 err = mlx4_map_clr_int(dev);
575 if (err)
576 goto err_out_free;
577
578 priv->eq_table.clr_mask =
579 swab32(1 << (priv->eq_table.inta_pin & 31));
580 priv->eq_table.clr_int = priv->clr_base +
581 (priv->eq_table.inta_pin < 32 ? 4 : 0);
582
583 err = mlx4_create_eq(dev, dev->caps.num_cqs + MLX4_NUM_SPARE_EQE,
584 (dev->flags & MLX4_FLAG_MSI_X) ? MLX4_EQ_COMP : 0,
585 &priv->eq_table.eq[MLX4_EQ_COMP]);
586 if (err)
587 goto err_out_unmap;
588
589 err = mlx4_create_eq(dev, MLX4_NUM_ASYNC_EQE + MLX4_NUM_SPARE_EQE,
590 (dev->flags & MLX4_FLAG_MSI_X) ? MLX4_EQ_ASYNC : 0,
591 &priv->eq_table.eq[MLX4_EQ_ASYNC]);
592 if (err)
593 goto err_out_comp;
594
595 if (dev->flags & MLX4_FLAG_MSI_X) {
596 static const char *eq_name[] = {
597 [MLX4_EQ_COMP] = DRV_NAME " (comp)",
598 [MLX4_EQ_ASYNC] = DRV_NAME " (async)",
599 [MLX4_EQ_CATAS] = DRV_NAME " (catas)"
600 };
601
602 err = mlx4_create_eq(dev, 1, MLX4_EQ_CATAS,
603 &priv->eq_table.eq[MLX4_EQ_CATAS]);
604 if (err)
605 goto err_out_async;
606
607 for (i = 0; i < MLX4_EQ_CATAS; ++i) {
608 err = request_irq(priv->eq_table.eq[i].irq,
609 mlx4_msi_x_interrupt,
610 0, eq_name[i], priv->eq_table.eq + i);
611 if (err)
612 goto err_out_catas;
613
614 priv->eq_table.eq[i].have_irq = 1;
615 }
616
617 err = request_irq(priv->eq_table.eq[MLX4_EQ_CATAS].irq,
618 mlx4_catas_interrupt, 0,
619 eq_name[MLX4_EQ_CATAS], dev);
620 if (err)
621 goto err_out_catas;
622
623 priv->eq_table.eq[MLX4_EQ_CATAS].have_irq = 1;
624 } else {
625 err = request_irq(dev->pdev->irq, mlx4_interrupt,
626 SA_SHIRQ, DRV_NAME, dev);
627 if (err)
628 goto err_out_async;
629
630 priv->eq_table.have_irq = 1;
631 }
632
633 err = mlx4_MAP_EQ(dev, MLX4_ASYNC_EVENT_MASK, 0,
634 priv->eq_table.eq[MLX4_EQ_ASYNC].eqn);
635 if (err)
636 mlx4_warn(dev, "MAP_EQ for async EQ %d failed (%d)\n",
637 priv->eq_table.eq[MLX4_EQ_ASYNC].eqn, err);
638
639 for (i = 0; i < MLX4_EQ_CATAS; ++i)
640 eq_set_ci(&priv->eq_table.eq[i], 1);
641
642 if (dev->flags & MLX4_FLAG_MSI_X) {
643 err = mlx4_MAP_EQ(dev, MLX4_CATAS_EVENT_MASK, 0,
644 priv->eq_table.eq[MLX4_EQ_CATAS].eqn);
645 if (err)
646 mlx4_warn(dev, "MAP_EQ for catas EQ %d failed (%d)\n",
647 priv->eq_table.eq[MLX4_EQ_CATAS].eqn, err);
648 }
649
650 return 0;
651
652err_out_catas:
653 mlx4_free_eq(dev, &priv->eq_table.eq[MLX4_EQ_CATAS]);
654
655err_out_async:
656 mlx4_free_eq(dev, &priv->eq_table.eq[MLX4_EQ_ASYNC]);
657
658err_out_comp:
659 mlx4_free_eq(dev, &priv->eq_table.eq[MLX4_EQ_COMP]);
660
661err_out_unmap:
662 mlx4_unmap_clr_int(dev);
663 mlx4_free_irqs(dev);
664
665err_out_free:
666 mlx4_bitmap_cleanup(&priv->eq_table.bitmap);
667 return err;
668}
669
670void mlx4_cleanup_eq_table(struct mlx4_dev *dev)
671{
672 struct mlx4_priv *priv = mlx4_priv(dev);
673 int i;
674
675 if (dev->flags & MLX4_FLAG_MSI_X)
676 mlx4_MAP_EQ(dev, MLX4_CATAS_EVENT_MASK, 1,
677 priv->eq_table.eq[MLX4_EQ_CATAS].eqn);
678
679 mlx4_MAP_EQ(dev, MLX4_ASYNC_EVENT_MASK, 1,
680 priv->eq_table.eq[MLX4_EQ_ASYNC].eqn);
681
682 mlx4_free_irqs(dev);
683
684 for (i = 0; i < MLX4_EQ_CATAS; ++i)
685 mlx4_free_eq(dev, &priv->eq_table.eq[i]);
686 if (dev->flags & MLX4_FLAG_MSI_X)
687 mlx4_free_eq(dev, &priv->eq_table.eq[MLX4_EQ_CATAS]);
688
689 mlx4_unmap_clr_int(dev);
690
691 for (i = 0; i < ARRAY_SIZE(priv->eq_table.uar_map); ++i)
692 if (priv->eq_table.uar_map[i])
693 iounmap(priv->eq_table.uar_map[i]);
694
695 mlx4_bitmap_cleanup(&priv->eq_table.bitmap);
696}
diff --git a/drivers/net/mlx4/fw.c b/drivers/net/mlx4/fw.c
new file mode 100644
index 000000000000..c42717313663
--- /dev/null
+++ b/drivers/net/mlx4/fw.c
@@ -0,0 +1,775 @@
1/*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
4 * Copyright (c) 2005, 2006, 2007 Cisco Systems, Inc. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 */
34
35#include <linux/mlx4/cmd.h>
36
37#include "fw.h"
38#include "icm.h"
39
40extern void __buggy_use_of_MLX4_GET(void);
41extern void __buggy_use_of_MLX4_PUT(void);
42
43#define MLX4_GET(dest, source, offset) \
44 do { \
45 void *__p = (char *) (source) + (offset); \
46 switch (sizeof (dest)) { \
47 case 1: (dest) = *(u8 *) __p; break; \
48 case 2: (dest) = be16_to_cpup(__p); break; \
49 case 4: (dest) = be32_to_cpup(__p); break; \
50 case 8: (dest) = be64_to_cpup(__p); break; \
51 default: __buggy_use_of_MLX4_GET(); \
52 } \
53 } while (0)
54
55#define MLX4_PUT(dest, source, offset) \
56 do { \
57 void *__d = ((char *) (dest) + (offset)); \
58 switch (sizeof(source)) { \
59 case 1: *(u8 *) __d = (source); break; \
60 case 2: *(__be16 *) __d = cpu_to_be16(source); break; \
61 case 4: *(__be32 *) __d = cpu_to_be32(source); break; \
62 case 8: *(__be64 *) __d = cpu_to_be64(source); break; \
63 default: __buggy_use_of_MLX4_PUT(); \
64 } \
65 } while (0)
66
67static void dump_dev_cap_flags(struct mlx4_dev *dev, u32 flags)
68{
69 static const char *fname[] = {
70 [ 0] = "RC transport",
71 [ 1] = "UC transport",
72 [ 2] = "UD transport",
73 [ 3] = "SRC transport",
74 [ 4] = "reliable multicast",
75 [ 5] = "FCoIB support",
76 [ 6] = "SRQ support",
77 [ 7] = "IPoIB checksum offload",
78 [ 8] = "P_Key violation counter",
79 [ 9] = "Q_Key violation counter",
80 [10] = "VMM",
81 [16] = "MW support",
82 [17] = "APM support",
83 [18] = "Atomic ops support",
84 [19] = "Raw multicast support",
85 [20] = "Address vector port checking support",
86 [21] = "UD multicast support",
87 [24] = "Demand paging support",
88 [25] = "Router support"
89 };
90 int i;
91
92 mlx4_dbg(dev, "DEV_CAP flags:\n");
93 for (i = 0; i < 32; ++i)
94 if (fname[i] && (flags & (1 << i)))
95 mlx4_dbg(dev, " %s\n", fname[i]);
96}
97
98int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
99{
100 struct mlx4_cmd_mailbox *mailbox;
101 u32 *outbox;
102 u8 field;
103 u16 size;
104 u16 stat_rate;
105 int err;
106
107#define QUERY_DEV_CAP_OUT_SIZE 0x100
108#define QUERY_DEV_CAP_MAX_SRQ_SZ_OFFSET 0x10
109#define QUERY_DEV_CAP_MAX_QP_SZ_OFFSET 0x11
110#define QUERY_DEV_CAP_RSVD_QP_OFFSET 0x12
111#define QUERY_DEV_CAP_MAX_QP_OFFSET 0x13
112#define QUERY_DEV_CAP_RSVD_SRQ_OFFSET 0x14
113#define QUERY_DEV_CAP_MAX_SRQ_OFFSET 0x15
114#define QUERY_DEV_CAP_RSVD_EEC_OFFSET 0x16
115#define QUERY_DEV_CAP_MAX_EEC_OFFSET 0x17
116#define QUERY_DEV_CAP_MAX_CQ_SZ_OFFSET 0x19
117#define QUERY_DEV_CAP_RSVD_CQ_OFFSET 0x1a
118#define QUERY_DEV_CAP_MAX_CQ_OFFSET 0x1b
119#define QUERY_DEV_CAP_MAX_MPT_OFFSET 0x1d
120#define QUERY_DEV_CAP_RSVD_EQ_OFFSET 0x1e
121#define QUERY_DEV_CAP_MAX_EQ_OFFSET 0x1f
122#define QUERY_DEV_CAP_RSVD_MTT_OFFSET 0x20
123#define QUERY_DEV_CAP_MAX_MRW_SZ_OFFSET 0x21
124#define QUERY_DEV_CAP_RSVD_MRW_OFFSET 0x22
125#define QUERY_DEV_CAP_MAX_MTT_SEG_OFFSET 0x23
126#define QUERY_DEV_CAP_MAX_AV_OFFSET 0x27
127#define QUERY_DEV_CAP_MAX_REQ_QP_OFFSET 0x29
128#define QUERY_DEV_CAP_MAX_RES_QP_OFFSET 0x2b
129#define QUERY_DEV_CAP_MAX_RDMA_OFFSET 0x2f
130#define QUERY_DEV_CAP_RSZ_SRQ_OFFSET 0x33
131#define QUERY_DEV_CAP_ACK_DELAY_OFFSET 0x35
132#define QUERY_DEV_CAP_MTU_WIDTH_OFFSET 0x36
133#define QUERY_DEV_CAP_VL_PORT_OFFSET 0x37
134#define QUERY_DEV_CAP_MAX_GID_OFFSET 0x3b
135#define QUERY_DEV_CAP_RATE_SUPPORT_OFFSET 0x3c
136#define QUERY_DEV_CAP_MAX_PKEY_OFFSET 0x3f
137#define QUERY_DEV_CAP_FLAGS_OFFSET 0x44
138#define QUERY_DEV_CAP_RSVD_UAR_OFFSET 0x48
139#define QUERY_DEV_CAP_UAR_SZ_OFFSET 0x49
140#define QUERY_DEV_CAP_PAGE_SZ_OFFSET 0x4b
141#define QUERY_DEV_CAP_BF_OFFSET 0x4c
142#define QUERY_DEV_CAP_LOG_BF_REG_SZ_OFFSET 0x4d
143#define QUERY_DEV_CAP_LOG_MAX_BF_REGS_PER_PAGE_OFFSET 0x4e
144#define QUERY_DEV_CAP_LOG_MAX_BF_PAGES_OFFSET 0x4f
145#define QUERY_DEV_CAP_MAX_SG_SQ_OFFSET 0x51
146#define QUERY_DEV_CAP_MAX_DESC_SZ_SQ_OFFSET 0x52
147#define QUERY_DEV_CAP_MAX_SG_RQ_OFFSET 0x55
148#define QUERY_DEV_CAP_MAX_DESC_SZ_RQ_OFFSET 0x56
149#define QUERY_DEV_CAP_MAX_QP_MCG_OFFSET 0x61
150#define QUERY_DEV_CAP_RSVD_MCG_OFFSET 0x62
151#define QUERY_DEV_CAP_MAX_MCG_OFFSET 0x63
152#define QUERY_DEV_CAP_RSVD_PD_OFFSET 0x64
153#define QUERY_DEV_CAP_MAX_PD_OFFSET 0x65
154#define QUERY_DEV_CAP_RDMARC_ENTRY_SZ_OFFSET 0x80
155#define QUERY_DEV_CAP_QPC_ENTRY_SZ_OFFSET 0x82
156#define QUERY_DEV_CAP_AUX_ENTRY_SZ_OFFSET 0x84
157#define QUERY_DEV_CAP_ALTC_ENTRY_SZ_OFFSET 0x86
158#define QUERY_DEV_CAP_EQC_ENTRY_SZ_OFFSET 0x88
159#define QUERY_DEV_CAP_CQC_ENTRY_SZ_OFFSET 0x8a
160#define QUERY_DEV_CAP_SRQ_ENTRY_SZ_OFFSET 0x8c
161#define QUERY_DEV_CAP_C_MPT_ENTRY_SZ_OFFSET 0x8e
162#define QUERY_DEV_CAP_MTT_ENTRY_SZ_OFFSET 0x90
163#define QUERY_DEV_CAP_D_MPT_ENTRY_SZ_OFFSET 0x92
164#define QUERY_DEV_CAP_BMME_FLAGS_OFFSET 0x97
165#define QUERY_DEV_CAP_RSVD_LKEY_OFFSET 0x98
166#define QUERY_DEV_CAP_MAX_ICM_SZ_OFFSET 0xa0
167
168 mailbox = mlx4_alloc_cmd_mailbox(dev);
169 if (IS_ERR(mailbox))
170 return PTR_ERR(mailbox);
171 outbox = mailbox->buf;
172
173 err = mlx4_cmd_box(dev, 0, mailbox->dma, 0, 0, MLX4_CMD_QUERY_DEV_CAP,
174 MLX4_CMD_TIME_CLASS_A);
175
176 if (err)
177 goto out;
178
179 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_QP_OFFSET);
180 dev_cap->reserved_qps = 1 << (field & 0xf);
181 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_QP_OFFSET);
182 dev_cap->max_qps = 1 << (field & 0x1f);
183 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_SRQ_OFFSET);
184 dev_cap->reserved_srqs = 1 << (field >> 4);
185 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_SRQ_OFFSET);
186 dev_cap->max_srqs = 1 << (field & 0x1f);
187 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_CQ_SZ_OFFSET);
188 dev_cap->max_cq_sz = 1 << field;
189 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_CQ_OFFSET);
190 dev_cap->reserved_cqs = 1 << (field & 0xf);
191 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_CQ_OFFSET);
192 dev_cap->max_cqs = 1 << (field & 0x1f);
193 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_MPT_OFFSET);
194 dev_cap->max_mpts = 1 << (field & 0x3f);
195 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_EQ_OFFSET);
196 dev_cap->reserved_eqs = 1 << (field & 0xf);
197 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_EQ_OFFSET);
198 dev_cap->max_eqs = 1 << (field & 0x7);
199 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_MTT_OFFSET);
200 dev_cap->reserved_mtts = 1 << (field >> 4);
201 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_MRW_SZ_OFFSET);
202 dev_cap->max_mrw_sz = 1 << field;
203 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_MRW_OFFSET);
204 dev_cap->reserved_mrws = 1 << (field & 0xf);
205 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_MTT_SEG_OFFSET);
206 dev_cap->max_mtt_seg = 1 << (field & 0x3f);
207 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_REQ_QP_OFFSET);
208 dev_cap->max_requester_per_qp = 1 << (field & 0x3f);
209 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_RES_QP_OFFSET);
210 dev_cap->max_responder_per_qp = 1 << (field & 0x3f);
211 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_RDMA_OFFSET);
212 dev_cap->max_rdma_global = 1 << (field & 0x3f);
213 MLX4_GET(field, outbox, QUERY_DEV_CAP_ACK_DELAY_OFFSET);
214 dev_cap->local_ca_ack_delay = field & 0x1f;
215 MLX4_GET(field, outbox, QUERY_DEV_CAP_MTU_WIDTH_OFFSET);
216 dev_cap->max_mtu = field >> 4;
217 dev_cap->max_port_width = field & 0xf;
218 MLX4_GET(field, outbox, QUERY_DEV_CAP_VL_PORT_OFFSET);
219 dev_cap->max_vl = field >> 4;
220 dev_cap->num_ports = field & 0xf;
221 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_GID_OFFSET);
222 dev_cap->max_gids = 1 << (field & 0xf);
223 MLX4_GET(stat_rate, outbox, QUERY_DEV_CAP_RATE_SUPPORT_OFFSET);
224 dev_cap->stat_rate_support = stat_rate;
225 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_PKEY_OFFSET);
226 dev_cap->max_pkeys = 1 << (field & 0xf);
227 MLX4_GET(dev_cap->flags, outbox, QUERY_DEV_CAP_FLAGS_OFFSET);
228 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_UAR_OFFSET);
229 dev_cap->reserved_uars = field >> 4;
230 MLX4_GET(field, outbox, QUERY_DEV_CAP_UAR_SZ_OFFSET);
231 dev_cap->uar_size = 1 << ((field & 0x3f) + 20);
232 MLX4_GET(field, outbox, QUERY_DEV_CAP_PAGE_SZ_OFFSET);
233 dev_cap->min_page_sz = 1 << field;
234
235 MLX4_GET(field, outbox, QUERY_DEV_CAP_BF_OFFSET);
236 if (field & 0x80) {
237 MLX4_GET(field, outbox, QUERY_DEV_CAP_LOG_BF_REG_SZ_OFFSET);
238 dev_cap->bf_reg_size = 1 << (field & 0x1f);
239 MLX4_GET(field, outbox, QUERY_DEV_CAP_LOG_MAX_BF_REGS_PER_PAGE_OFFSET);
240 dev_cap->bf_regs_per_page = 1 << (field & 0x3f);
241 mlx4_dbg(dev, "BlueFlame available (reg size %d, regs/page %d)\n",
242 dev_cap->bf_reg_size, dev_cap->bf_regs_per_page);
243 } else {
244 dev_cap->bf_reg_size = 0;
245 mlx4_dbg(dev, "BlueFlame not available\n");
246 }
247
248 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_SG_SQ_OFFSET);
249 dev_cap->max_sq_sg = field;
250 MLX4_GET(size, outbox, QUERY_DEV_CAP_MAX_DESC_SZ_SQ_OFFSET);
251 dev_cap->max_sq_desc_sz = size;
252
253 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_QP_MCG_OFFSET);
254 dev_cap->max_qp_per_mcg = 1 << field;
255 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_MCG_OFFSET);
256 dev_cap->reserved_mgms = field & 0xf;
257 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_MCG_OFFSET);
258 dev_cap->max_mcgs = 1 << field;
259 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_PD_OFFSET);
260 dev_cap->reserved_pds = field >> 4;
261 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_PD_OFFSET);
262 dev_cap->max_pds = 1 << (field & 0x3f);
263
264 MLX4_GET(size, outbox, QUERY_DEV_CAP_RDMARC_ENTRY_SZ_OFFSET);
265 dev_cap->rdmarc_entry_sz = size;
266 MLX4_GET(size, outbox, QUERY_DEV_CAP_QPC_ENTRY_SZ_OFFSET);
267 dev_cap->qpc_entry_sz = size;
268 MLX4_GET(size, outbox, QUERY_DEV_CAP_AUX_ENTRY_SZ_OFFSET);
269 dev_cap->aux_entry_sz = size;
270 MLX4_GET(size, outbox, QUERY_DEV_CAP_ALTC_ENTRY_SZ_OFFSET);
271 dev_cap->altc_entry_sz = size;
272 MLX4_GET(size, outbox, QUERY_DEV_CAP_EQC_ENTRY_SZ_OFFSET);
273 dev_cap->eqc_entry_sz = size;
274 MLX4_GET(size, outbox, QUERY_DEV_CAP_CQC_ENTRY_SZ_OFFSET);
275 dev_cap->cqc_entry_sz = size;
276 MLX4_GET(size, outbox, QUERY_DEV_CAP_SRQ_ENTRY_SZ_OFFSET);
277 dev_cap->srq_entry_sz = size;
278 MLX4_GET(size, outbox, QUERY_DEV_CAP_C_MPT_ENTRY_SZ_OFFSET);
279 dev_cap->cmpt_entry_sz = size;
280 MLX4_GET(size, outbox, QUERY_DEV_CAP_MTT_ENTRY_SZ_OFFSET);
281 dev_cap->mtt_entry_sz = size;
282 MLX4_GET(size, outbox, QUERY_DEV_CAP_D_MPT_ENTRY_SZ_OFFSET);
283 dev_cap->dmpt_entry_sz = size;
284
285 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_SRQ_SZ_OFFSET);
286 dev_cap->max_srq_sz = 1 << field;
287 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_QP_SZ_OFFSET);
288 dev_cap->max_qp_sz = 1 << field;
289 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSZ_SRQ_OFFSET);
290 dev_cap->resize_srq = field & 1;
291 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_SG_RQ_OFFSET);
292 dev_cap->max_rq_sg = field;
293 MLX4_GET(size, outbox, QUERY_DEV_CAP_MAX_DESC_SZ_RQ_OFFSET);
294 dev_cap->max_rq_desc_sz = size;
295
296 MLX4_GET(dev_cap->bmme_flags, outbox,
297 QUERY_DEV_CAP_BMME_FLAGS_OFFSET);
298 MLX4_GET(dev_cap->reserved_lkey, outbox,
299 QUERY_DEV_CAP_RSVD_LKEY_OFFSET);
300 MLX4_GET(dev_cap->max_icm_sz, outbox,
301 QUERY_DEV_CAP_MAX_ICM_SZ_OFFSET);
302
303 if (dev_cap->bmme_flags & 1)
304 mlx4_dbg(dev, "Base MM extensions: yes "
305 "(flags %d, rsvd L_Key %08x)\n",
306 dev_cap->bmme_flags, dev_cap->reserved_lkey);
307 else
308 mlx4_dbg(dev, "Base MM extensions: no\n");
309
310 /*
311 * Each UAR has 4 EQ doorbells; so if a UAR is reserved, then
312 * we can't use any EQs whose doorbell falls on that page,
313 * even if the EQ itself isn't reserved.
314 */
315 dev_cap->reserved_eqs = max(dev_cap->reserved_uars * 4,
316 dev_cap->reserved_eqs);
317
318 mlx4_dbg(dev, "Max ICM size %lld MB\n",
319 (unsigned long long) dev_cap->max_icm_sz >> 20);
320 mlx4_dbg(dev, "Max QPs: %d, reserved QPs: %d, entry size: %d\n",
321 dev_cap->max_qps, dev_cap->reserved_qps, dev_cap->qpc_entry_sz);
322 mlx4_dbg(dev, "Max SRQs: %d, reserved SRQs: %d, entry size: %d\n",
323 dev_cap->max_srqs, dev_cap->reserved_srqs, dev_cap->srq_entry_sz);
324 mlx4_dbg(dev, "Max CQs: %d, reserved CQs: %d, entry size: %d\n",
325 dev_cap->max_cqs, dev_cap->reserved_cqs, dev_cap->cqc_entry_sz);
326 mlx4_dbg(dev, "Max EQs: %d, reserved EQs: %d, entry size: %d\n",
327 dev_cap->max_eqs, dev_cap->reserved_eqs, dev_cap->eqc_entry_sz);
328 mlx4_dbg(dev, "reserved MPTs: %d, reserved MTTs: %d\n",
329 dev_cap->reserved_mrws, dev_cap->reserved_mtts);
330 mlx4_dbg(dev, "Max PDs: %d, reserved PDs: %d, reserved UARs: %d\n",
331 dev_cap->max_pds, dev_cap->reserved_pds, dev_cap->reserved_uars);
332 mlx4_dbg(dev, "Max QP/MCG: %d, reserved MGMs: %d\n",
333 dev_cap->max_pds, dev_cap->reserved_mgms);
334 mlx4_dbg(dev, "Max CQEs: %d, max WQEs: %d, max SRQ WQEs: %d\n",
335 dev_cap->max_cq_sz, dev_cap->max_qp_sz, dev_cap->max_srq_sz);
336 mlx4_dbg(dev, "Local CA ACK delay: %d, max MTU: %d, port width cap: %d\n",
337 dev_cap->local_ca_ack_delay, 128 << dev_cap->max_mtu,
338 dev_cap->max_port_width);
339 mlx4_dbg(dev, "Max SQ desc size: %d, max SQ S/G: %d\n",
340 dev_cap->max_sq_desc_sz, dev_cap->max_sq_sg);
341 mlx4_dbg(dev, "Max RQ desc size: %d, max RQ S/G: %d\n",
342 dev_cap->max_rq_desc_sz, dev_cap->max_rq_sg);
343
344 dump_dev_cap_flags(dev, dev_cap->flags);
345
346out:
347 mlx4_free_cmd_mailbox(dev, mailbox);
348 return err;
349}
350
351int mlx4_map_cmd(struct mlx4_dev *dev, u16 op, struct mlx4_icm *icm, u64 virt)
352{
353 struct mlx4_cmd_mailbox *mailbox;
354 struct mlx4_icm_iter iter;
355 __be64 *pages;
356 int lg;
357 int nent = 0;
358 int i;
359 int err = 0;
360 int ts = 0, tc = 0;
361
362 mailbox = mlx4_alloc_cmd_mailbox(dev);
363 if (IS_ERR(mailbox))
364 return PTR_ERR(mailbox);
365 memset(mailbox->buf, 0, MLX4_MAILBOX_SIZE);
366 pages = mailbox->buf;
367
368 for (mlx4_icm_first(icm, &iter);
369 !mlx4_icm_last(&iter);
370 mlx4_icm_next(&iter)) {
371 /*
372 * We have to pass pages that are aligned to their
373 * size, so find the least significant 1 in the
374 * address or size and use that as our log2 size.
375 */
376 lg = ffs(mlx4_icm_addr(&iter) | mlx4_icm_size(&iter)) - 1;
377 if (lg < MLX4_ICM_PAGE_SHIFT) {
378 mlx4_warn(dev, "Got FW area not aligned to %d (%llx/%lx).\n",
379 MLX4_ICM_PAGE_SIZE,
380 (unsigned long long) mlx4_icm_addr(&iter),
381 mlx4_icm_size(&iter));
382 err = -EINVAL;
383 goto out;
384 }
385
386 for (i = 0; i < mlx4_icm_size(&iter) >> lg; ++i) {
387 if (virt != -1) {
388 pages[nent * 2] = cpu_to_be64(virt);
389 virt += 1 << lg;
390 }
391
392 pages[nent * 2 + 1] =
393 cpu_to_be64((mlx4_icm_addr(&iter) + (i << lg)) |
394 (lg - MLX4_ICM_PAGE_SHIFT));
395 ts += 1 << (lg - 10);
396 ++tc;
397
398 if (++nent == MLX4_MAILBOX_SIZE / 16) {
399 err = mlx4_cmd(dev, mailbox->dma, nent, 0, op,
400 MLX4_CMD_TIME_CLASS_B);
401 if (err)
402 goto out;
403 nent = 0;
404 }
405 }
406 }
407
408 if (nent)
409 err = mlx4_cmd(dev, mailbox->dma, nent, 0, op, MLX4_CMD_TIME_CLASS_B);
410 if (err)
411 goto out;
412
413 switch (op) {
414 case MLX4_CMD_MAP_FA:
415 mlx4_dbg(dev, "Mapped %d chunks/%d KB for FW.\n", tc, ts);
416 break;
417 case MLX4_CMD_MAP_ICM_AUX:
418 mlx4_dbg(dev, "Mapped %d chunks/%d KB for ICM aux.\n", tc, ts);
419 break;
420 case MLX4_CMD_MAP_ICM:
421 mlx4_dbg(dev, "Mapped %d chunks/%d KB at %llx for ICM.\n",
422 tc, ts, (unsigned long long) virt - (ts << 10));
423 break;
424 }
425
426out:
427 mlx4_free_cmd_mailbox(dev, mailbox);
428 return err;
429}
430
431int mlx4_MAP_FA(struct mlx4_dev *dev, struct mlx4_icm *icm)
432{
433 return mlx4_map_cmd(dev, MLX4_CMD_MAP_FA, icm, -1);
434}
435
436int mlx4_UNMAP_FA(struct mlx4_dev *dev)
437{
438 return mlx4_cmd(dev, 0, 0, 0, MLX4_CMD_UNMAP_FA, MLX4_CMD_TIME_CLASS_B);
439}
440
441
442int mlx4_RUN_FW(struct mlx4_dev *dev)
443{
444 return mlx4_cmd(dev, 0, 0, 0, MLX4_CMD_RUN_FW, MLX4_CMD_TIME_CLASS_A);
445}
446
447int mlx4_QUERY_FW(struct mlx4_dev *dev)
448{
449 struct mlx4_fw *fw = &mlx4_priv(dev)->fw;
450 struct mlx4_cmd *cmd = &mlx4_priv(dev)->cmd;
451 struct mlx4_cmd_mailbox *mailbox;
452 u32 *outbox;
453 int err = 0;
454 u64 fw_ver;
455 u8 lg;
456
457#define QUERY_FW_OUT_SIZE 0x100
458#define QUERY_FW_VER_OFFSET 0x00
459#define QUERY_FW_MAX_CMD_OFFSET 0x0f
460#define QUERY_FW_ERR_START_OFFSET 0x30
461#define QUERY_FW_ERR_SIZE_OFFSET 0x38
462#define QUERY_FW_ERR_BAR_OFFSET 0x3c
463
464#define QUERY_FW_SIZE_OFFSET 0x00
465#define QUERY_FW_CLR_INT_BASE_OFFSET 0x20
466#define QUERY_FW_CLR_INT_BAR_OFFSET 0x28
467
468 mailbox = mlx4_alloc_cmd_mailbox(dev);
469 if (IS_ERR(mailbox))
470 return PTR_ERR(mailbox);
471 outbox = mailbox->buf;
472
473 err = mlx4_cmd_box(dev, 0, mailbox->dma, 0, 0, MLX4_CMD_QUERY_FW,
474 MLX4_CMD_TIME_CLASS_A);
475 if (err)
476 goto out;
477
478 MLX4_GET(fw_ver, outbox, QUERY_FW_VER_OFFSET);
479 /*
480 * FW subminor version is at more signifant bits than minor
481 * version, so swap here.
482 */
483 dev->caps.fw_ver = (fw_ver & 0xffff00000000ull) |
484 ((fw_ver & 0xffff0000ull) >> 16) |
485 ((fw_ver & 0x0000ffffull) << 16);
486
487 MLX4_GET(lg, outbox, QUERY_FW_MAX_CMD_OFFSET);
488 cmd->max_cmds = 1 << lg;
489
490 mlx4_dbg(dev, "FW version %d.%d.%03d, max commands %d\n",
491 (int) (dev->caps.fw_ver >> 32),
492 (int) (dev->caps.fw_ver >> 16) & 0xffff,
493 (int) dev->caps.fw_ver & 0xffff,
494 cmd->max_cmds);
495
496 MLX4_GET(fw->catas_offset, outbox, QUERY_FW_ERR_START_OFFSET);
497 MLX4_GET(fw->catas_size, outbox, QUERY_FW_ERR_SIZE_OFFSET);
498 MLX4_GET(fw->catas_bar, outbox, QUERY_FW_ERR_BAR_OFFSET);
499 fw->catas_bar = (fw->catas_bar >> 6) * 2;
500
501 mlx4_dbg(dev, "Catastrophic error buffer at 0x%llx, size 0x%x, BAR %d\n",
502 (unsigned long long) fw->catas_offset, fw->catas_size, fw->catas_bar);
503
504 MLX4_GET(fw->fw_pages, outbox, QUERY_FW_SIZE_OFFSET);
505 MLX4_GET(fw->clr_int_base, outbox, QUERY_FW_CLR_INT_BASE_OFFSET);
506 MLX4_GET(fw->clr_int_bar, outbox, QUERY_FW_CLR_INT_BAR_OFFSET);
507 fw->clr_int_bar = (fw->clr_int_bar >> 6) * 2;
508
509 mlx4_dbg(dev, "FW size %d KB\n", fw->fw_pages >> 2);
510
511 /*
512 * Round up number of system pages needed in case
513 * MLX4_ICM_PAGE_SIZE < PAGE_SIZE.
514 */
515 fw->fw_pages =
516 ALIGN(fw->fw_pages, PAGE_SIZE / MLX4_ICM_PAGE_SIZE) >>
517 (PAGE_SHIFT - MLX4_ICM_PAGE_SHIFT);
518
519 mlx4_dbg(dev, "Clear int @ %llx, BAR %d\n",
520 (unsigned long long) fw->clr_int_base, fw->clr_int_bar);
521
522out:
523 mlx4_free_cmd_mailbox(dev, mailbox);
524 return err;
525}
526
527static void get_board_id(void *vsd, char *board_id)
528{
529 int i;
530
531#define VSD_OFFSET_SIG1 0x00
532#define VSD_OFFSET_SIG2 0xde
533#define VSD_OFFSET_MLX_BOARD_ID 0xd0
534#define VSD_OFFSET_TS_BOARD_ID 0x20
535
536#define VSD_SIGNATURE_TOPSPIN 0x5ad
537
538 memset(board_id, 0, MLX4_BOARD_ID_LEN);
539
540 if (be16_to_cpup(vsd + VSD_OFFSET_SIG1) == VSD_SIGNATURE_TOPSPIN &&
541 be16_to_cpup(vsd + VSD_OFFSET_SIG2) == VSD_SIGNATURE_TOPSPIN) {
542 strlcpy(board_id, vsd + VSD_OFFSET_TS_BOARD_ID, MLX4_BOARD_ID_LEN);
543 } else {
544 /*
545 * The board ID is a string but the firmware byte
546 * swaps each 4-byte word before passing it back to
547 * us. Therefore we need to swab it before printing.
548 */
549 for (i = 0; i < 4; ++i)
550 ((u32 *) board_id)[i] =
551 swab32(*(u32 *) (vsd + VSD_OFFSET_MLX_BOARD_ID + i * 4));
552 }
553}
554
555int mlx4_QUERY_ADAPTER(struct mlx4_dev *dev, struct mlx4_adapter *adapter)
556{
557 struct mlx4_cmd_mailbox *mailbox;
558 u32 *outbox;
559 int err;
560
561#define QUERY_ADAPTER_OUT_SIZE 0x100
562#define QUERY_ADAPTER_VENDOR_ID_OFFSET 0x00
563#define QUERY_ADAPTER_DEVICE_ID_OFFSET 0x04
564#define QUERY_ADAPTER_REVISION_ID_OFFSET 0x08
565#define QUERY_ADAPTER_INTA_PIN_OFFSET 0x10
566#define QUERY_ADAPTER_VSD_OFFSET 0x20
567
568 mailbox = mlx4_alloc_cmd_mailbox(dev);
569 if (IS_ERR(mailbox))
570 return PTR_ERR(mailbox);
571 outbox = mailbox->buf;
572
573 err = mlx4_cmd_box(dev, 0, mailbox->dma, 0, 0, MLX4_CMD_QUERY_ADAPTER,
574 MLX4_CMD_TIME_CLASS_A);
575 if (err)
576 goto out;
577
578 MLX4_GET(adapter->vendor_id, outbox, QUERY_ADAPTER_VENDOR_ID_OFFSET);
579 MLX4_GET(adapter->device_id, outbox, QUERY_ADAPTER_DEVICE_ID_OFFSET);
580 MLX4_GET(adapter->revision_id, outbox, QUERY_ADAPTER_REVISION_ID_OFFSET);
581 MLX4_GET(adapter->inta_pin, outbox, QUERY_ADAPTER_INTA_PIN_OFFSET);
582
583 get_board_id(outbox + QUERY_ADAPTER_VSD_OFFSET / 4,
584 adapter->board_id);
585
586out:
587 mlx4_free_cmd_mailbox(dev, mailbox);
588 return err;
589}
590
591int mlx4_INIT_HCA(struct mlx4_dev *dev, struct mlx4_init_hca_param *param)
592{
593 struct mlx4_cmd_mailbox *mailbox;
594 __be32 *inbox;
595 int err;
596
597#define INIT_HCA_IN_SIZE 0x200
598#define INIT_HCA_VERSION_OFFSET 0x000
599#define INIT_HCA_VERSION 2
600#define INIT_HCA_FLAGS_OFFSET 0x014
601#define INIT_HCA_QPC_OFFSET 0x020
602#define INIT_HCA_QPC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x10)
603#define INIT_HCA_LOG_QP_OFFSET (INIT_HCA_QPC_OFFSET + 0x17)
604#define INIT_HCA_SRQC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x28)
605#define INIT_HCA_LOG_SRQ_OFFSET (INIT_HCA_QPC_OFFSET + 0x2f)
606#define INIT_HCA_CQC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x30)
607#define INIT_HCA_LOG_CQ_OFFSET (INIT_HCA_QPC_OFFSET + 0x37)
608#define INIT_HCA_ALTC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x40)
609#define INIT_HCA_AUXC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x50)
610#define INIT_HCA_EQC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x60)
611#define INIT_HCA_LOG_EQ_OFFSET (INIT_HCA_QPC_OFFSET + 0x67)
612#define INIT_HCA_RDMARC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x70)
613#define INIT_HCA_LOG_RD_OFFSET (INIT_HCA_QPC_OFFSET + 0x77)
614#define INIT_HCA_MCAST_OFFSET 0x0c0
615#define INIT_HCA_MC_BASE_OFFSET (INIT_HCA_MCAST_OFFSET + 0x00)
616#define INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x12)
617#define INIT_HCA_LOG_MC_HASH_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x16)
618#define INIT_HCA_LOG_MC_TABLE_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x1b)
619#define INIT_HCA_TPT_OFFSET 0x0f0
620#define INIT_HCA_DMPT_BASE_OFFSET (INIT_HCA_TPT_OFFSET + 0x00)
621#define INIT_HCA_LOG_MPT_SZ_OFFSET (INIT_HCA_TPT_OFFSET + 0x0b)
622#define INIT_HCA_MTT_BASE_OFFSET (INIT_HCA_TPT_OFFSET + 0x10)
623#define INIT_HCA_CMPT_BASE_OFFSET (INIT_HCA_TPT_OFFSET + 0x18)
624#define INIT_HCA_UAR_OFFSET 0x120
625#define INIT_HCA_LOG_UAR_SZ_OFFSET (INIT_HCA_UAR_OFFSET + 0x0a)
626#define INIT_HCA_UAR_PAGE_SZ_OFFSET (INIT_HCA_UAR_OFFSET + 0x0b)
627
628 mailbox = mlx4_alloc_cmd_mailbox(dev);
629 if (IS_ERR(mailbox))
630 return PTR_ERR(mailbox);
631 inbox = mailbox->buf;
632
633 memset(inbox, 0, INIT_HCA_IN_SIZE);
634
635 *((u8 *) mailbox->buf + INIT_HCA_VERSION_OFFSET) = INIT_HCA_VERSION;
636
637#if defined(__LITTLE_ENDIAN)
638 *(inbox + INIT_HCA_FLAGS_OFFSET / 4) &= ~cpu_to_be32(1 << 1);
639#elif defined(__BIG_ENDIAN)
640 *(inbox + INIT_HCA_FLAGS_OFFSET / 4) |= cpu_to_be32(1 << 1);
641#else
642#error Host endianness not defined
643#endif
644 /* Check port for UD address vector: */
645 *(inbox + INIT_HCA_FLAGS_OFFSET / 4) |= cpu_to_be32(1);
646
647 /* QPC/EEC/CQC/EQC/RDMARC attributes */
648
649 MLX4_PUT(inbox, param->qpc_base, INIT_HCA_QPC_BASE_OFFSET);
650 MLX4_PUT(inbox, param->log_num_qps, INIT_HCA_LOG_QP_OFFSET);
651 MLX4_PUT(inbox, param->srqc_base, INIT_HCA_SRQC_BASE_OFFSET);
652 MLX4_PUT(inbox, param->log_num_srqs, INIT_HCA_LOG_SRQ_OFFSET);
653 MLX4_PUT(inbox, param->cqc_base, INIT_HCA_CQC_BASE_OFFSET);
654 MLX4_PUT(inbox, param->log_num_cqs, INIT_HCA_LOG_CQ_OFFSET);
655 MLX4_PUT(inbox, param->altc_base, INIT_HCA_ALTC_BASE_OFFSET);
656 MLX4_PUT(inbox, param->auxc_base, INIT_HCA_AUXC_BASE_OFFSET);
657 MLX4_PUT(inbox, param->eqc_base, INIT_HCA_EQC_BASE_OFFSET);
658 MLX4_PUT(inbox, param->log_num_eqs, INIT_HCA_LOG_EQ_OFFSET);
659 MLX4_PUT(inbox, param->rdmarc_base, INIT_HCA_RDMARC_BASE_OFFSET);
660 MLX4_PUT(inbox, param->log_rd_per_qp, INIT_HCA_LOG_RD_OFFSET);
661
662 /* multicast attributes */
663
664 MLX4_PUT(inbox, param->mc_base, INIT_HCA_MC_BASE_OFFSET);
665 MLX4_PUT(inbox, param->log_mc_entry_sz, INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET);
666 MLX4_PUT(inbox, param->log_mc_hash_sz, INIT_HCA_LOG_MC_HASH_SZ_OFFSET);
667 MLX4_PUT(inbox, param->log_mc_table_sz, INIT_HCA_LOG_MC_TABLE_SZ_OFFSET);
668
669 /* TPT attributes */
670
671 MLX4_PUT(inbox, param->dmpt_base, INIT_HCA_DMPT_BASE_OFFSET);
672 MLX4_PUT(inbox, param->log_mpt_sz, INIT_HCA_LOG_MPT_SZ_OFFSET);
673 MLX4_PUT(inbox, param->mtt_base, INIT_HCA_MTT_BASE_OFFSET);
674 MLX4_PUT(inbox, param->cmpt_base, INIT_HCA_CMPT_BASE_OFFSET);
675
676 /* UAR attributes */
677
678 MLX4_PUT(inbox, (u8) (PAGE_SHIFT - 12), INIT_HCA_UAR_PAGE_SZ_OFFSET);
679 MLX4_PUT(inbox, param->log_uar_sz, INIT_HCA_LOG_UAR_SZ_OFFSET);
680
681 err = mlx4_cmd(dev, mailbox->dma, 0, 0, MLX4_CMD_INIT_HCA, 1000);
682
683 if (err)
684 mlx4_err(dev, "INIT_HCA returns %d\n", err);
685
686 mlx4_free_cmd_mailbox(dev, mailbox);
687 return err;
688}
689
690int mlx4_INIT_PORT(struct mlx4_dev *dev, struct mlx4_init_port_param *param, int port)
691{
692 struct mlx4_cmd_mailbox *mailbox;
693 u32 *inbox;
694 int err;
695 u32 flags;
696
697#define INIT_PORT_IN_SIZE 256
698#define INIT_PORT_FLAGS_OFFSET 0x00
699#define INIT_PORT_FLAG_SIG (1 << 18)
700#define INIT_PORT_FLAG_NG (1 << 17)
701#define INIT_PORT_FLAG_G0 (1 << 16)
702#define INIT_PORT_VL_SHIFT 4
703#define INIT_PORT_PORT_WIDTH_SHIFT 8
704#define INIT_PORT_MTU_OFFSET 0x04
705#define INIT_PORT_MAX_GID_OFFSET 0x06
706#define INIT_PORT_MAX_PKEY_OFFSET 0x0a
707#define INIT_PORT_GUID0_OFFSET 0x10
708#define INIT_PORT_NODE_GUID_OFFSET 0x18
709#define INIT_PORT_SI_GUID_OFFSET 0x20
710
711 mailbox = mlx4_alloc_cmd_mailbox(dev);
712 if (IS_ERR(mailbox))
713 return PTR_ERR(mailbox);
714 inbox = mailbox->buf;
715
716 memset(inbox, 0, INIT_PORT_IN_SIZE);
717
718 flags = 0;
719 flags |= param->set_guid0 ? INIT_PORT_FLAG_G0 : 0;
720 flags |= param->set_node_guid ? INIT_PORT_FLAG_NG : 0;
721 flags |= param->set_si_guid ? INIT_PORT_FLAG_SIG : 0;
722 flags |= (param->vl_cap & 0xf) << INIT_PORT_VL_SHIFT;
723 flags |= (param->port_width_cap & 0xf) << INIT_PORT_PORT_WIDTH_SHIFT;
724 MLX4_PUT(inbox, flags, INIT_PORT_FLAGS_OFFSET);
725
726 MLX4_PUT(inbox, param->mtu, INIT_PORT_MTU_OFFSET);
727 MLX4_PUT(inbox, param->max_gid, INIT_PORT_MAX_GID_OFFSET);
728 MLX4_PUT(inbox, param->max_pkey, INIT_PORT_MAX_PKEY_OFFSET);
729 MLX4_PUT(inbox, param->guid0, INIT_PORT_GUID0_OFFSET);
730 MLX4_PUT(inbox, param->node_guid, INIT_PORT_NODE_GUID_OFFSET);
731 MLX4_PUT(inbox, param->si_guid, INIT_PORT_SI_GUID_OFFSET);
732
733 err = mlx4_cmd(dev, mailbox->dma, port, 0, MLX4_CMD_INIT_PORT,
734 MLX4_CMD_TIME_CLASS_A);
735
736 mlx4_free_cmd_mailbox(dev, mailbox);
737
738 return err;
739}
740EXPORT_SYMBOL_GPL(mlx4_INIT_PORT);
741
742int mlx4_CLOSE_PORT(struct mlx4_dev *dev, int port)
743{
744 return mlx4_cmd(dev, 0, port, 0, MLX4_CMD_CLOSE_PORT, 1000);
745}
746EXPORT_SYMBOL_GPL(mlx4_CLOSE_PORT);
747
748int mlx4_CLOSE_HCA(struct mlx4_dev *dev, int panic)
749{
750 return mlx4_cmd(dev, 0, 0, panic, MLX4_CMD_CLOSE_HCA, 1000);
751}
752
753int mlx4_SET_ICM_SIZE(struct mlx4_dev *dev, u64 icm_size, u64 *aux_pages)
754{
755 int ret = mlx4_cmd_imm(dev, icm_size, aux_pages, 0, 0,
756 MLX4_CMD_SET_ICM_SIZE,
757 MLX4_CMD_TIME_CLASS_A);
758 if (ret)
759 return ret;
760
761 /*
762 * Round up number of system pages needed in case
763 * MLX4_ICM_PAGE_SIZE < PAGE_SIZE.
764 */
765 *aux_pages = ALIGN(*aux_pages, PAGE_SIZE / MLX4_ICM_PAGE_SIZE) >>
766 (PAGE_SHIFT - MLX4_ICM_PAGE_SHIFT);
767
768 return 0;
769}
770
771int mlx4_NOP(struct mlx4_dev *dev)
772{
773 /* Input modifier of 0x1f means "finish as soon as possible." */
774 return mlx4_cmd(dev, 0, 0x1f, 0, MLX4_CMD_NOP, 100);
775}
diff --git a/drivers/net/mlx4/fw.h b/drivers/net/mlx4/fw.h
new file mode 100644
index 000000000000..2616fa53d4d0
--- /dev/null
+++ b/drivers/net/mlx4/fw.h
@@ -0,0 +1,167 @@
1/*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
4 * Copyright (c) 2006, 2007 Cisco Systems. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 */
34
35#ifndef MLX4_FW_H
36#define MLX4_FW_H
37
38#include "mlx4.h"
39#include "icm.h"
40
41struct mlx4_dev_cap {
42 int max_srq_sz;
43 int max_qp_sz;
44 int reserved_qps;
45 int max_qps;
46 int reserved_srqs;
47 int max_srqs;
48 int max_cq_sz;
49 int reserved_cqs;
50 int max_cqs;
51 int max_mpts;
52 int reserved_eqs;
53 int max_eqs;
54 int reserved_mtts;
55 int max_mrw_sz;
56 int reserved_mrws;
57 int max_mtt_seg;
58 int max_requester_per_qp;
59 int max_responder_per_qp;
60 int max_rdma_global;
61 int local_ca_ack_delay;
62 int max_mtu;
63 int max_port_width;
64 int max_vl;
65 int num_ports;
66 int max_gids;
67 u16 stat_rate_support;
68 int max_pkeys;
69 u32 flags;
70 int reserved_uars;
71 int uar_size;
72 int min_page_sz;
73 int bf_reg_size;
74 int bf_regs_per_page;
75 int max_sq_sg;
76 int max_sq_desc_sz;
77 int max_rq_sg;
78 int max_rq_desc_sz;
79 int max_qp_per_mcg;
80 int reserved_mgms;
81 int max_mcgs;
82 int reserved_pds;
83 int max_pds;
84 int qpc_entry_sz;
85 int rdmarc_entry_sz;
86 int altc_entry_sz;
87 int aux_entry_sz;
88 int srq_entry_sz;
89 int cqc_entry_sz;
90 int eqc_entry_sz;
91 int dmpt_entry_sz;
92 int cmpt_entry_sz;
93 int mtt_entry_sz;
94 int resize_srq;
95 u8 bmme_flags;
96 u32 reserved_lkey;
97 u64 max_icm_sz;
98};
99
100struct mlx4_adapter {
101 u32 vendor_id;
102 u32 device_id;
103 u32 revision_id;
104 char board_id[MLX4_BOARD_ID_LEN];
105 u8 inta_pin;
106};
107
108struct mlx4_init_hca_param {
109 u64 qpc_base;
110 u64 rdmarc_base;
111 u64 auxc_base;
112 u64 altc_base;
113 u64 srqc_base;
114 u64 cqc_base;
115 u64 eqc_base;
116 u64 mc_base;
117 u64 dmpt_base;
118 u64 cmpt_base;
119 u64 mtt_base;
120 u16 log_mc_entry_sz;
121 u16 log_mc_hash_sz;
122 u8 log_num_qps;
123 u8 log_num_srqs;
124 u8 log_num_cqs;
125 u8 log_num_eqs;
126 u8 log_rd_per_qp;
127 u8 log_mc_table_sz;
128 u8 log_mpt_sz;
129 u8 log_uar_sz;
130};
131
132struct mlx4_init_ib_param {
133 int port_width;
134 int vl_cap;
135 int mtu_cap;
136 u16 gid_cap;
137 u16 pkey_cap;
138 int set_guid0;
139 u64 guid0;
140 int set_node_guid;
141 u64 node_guid;
142 int set_si_guid;
143 u64 si_guid;
144};
145
146struct mlx4_set_ib_param {
147 int set_si_guid;
148 int reset_qkey_viol;
149 u64 si_guid;
150 u32 cap_mask;
151};
152
153int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap);
154int mlx4_MAP_FA(struct mlx4_dev *dev, struct mlx4_icm *icm);
155int mlx4_UNMAP_FA(struct mlx4_dev *dev);
156int mlx4_RUN_FW(struct mlx4_dev *dev);
157int mlx4_QUERY_FW(struct mlx4_dev *dev);
158int mlx4_QUERY_ADAPTER(struct mlx4_dev *dev, struct mlx4_adapter *adapter);
159int mlx4_INIT_HCA(struct mlx4_dev *dev, struct mlx4_init_hca_param *param);
160int mlx4_CLOSE_HCA(struct mlx4_dev *dev, int panic);
161int mlx4_map_cmd(struct mlx4_dev *dev, u16 op, struct mlx4_icm *icm, u64 virt);
162int mlx4_SET_ICM_SIZE(struct mlx4_dev *dev, u64 icm_size, u64 *aux_pages);
163int mlx4_MAP_ICM_AUX(struct mlx4_dev *dev, struct mlx4_icm *icm);
164int mlx4_UNMAP_ICM_AUX(struct mlx4_dev *dev);
165int mlx4_NOP(struct mlx4_dev *dev);
166
167#endif /* MLX4_FW_H */
diff --git a/drivers/net/mlx4/icm.c b/drivers/net/mlx4/icm.c
new file mode 100644
index 000000000000..e96feaed6ed4
--- /dev/null
+++ b/drivers/net/mlx4/icm.c
@@ -0,0 +1,379 @@
1/*
2 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
3 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
4 *
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
10 *
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
13 * conditions are met:
14 *
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * SOFTWARE.
32 */
33
34#include <linux/init.h>
35#include <linux/errno.h>
36
37#include <linux/mlx4/cmd.h>
38
39#include "mlx4.h"
40#include "icm.h"
41#include "fw.h"
42
43/*
44 * We allocate in as big chunks as we can, up to a maximum of 256 KB
45 * per chunk.
46 */
47enum {
48 MLX4_ICM_ALLOC_SIZE = 1 << 18,
49 MLX4_TABLE_CHUNK_SIZE = 1 << 18
50};
51
52void mlx4_free_icm(struct mlx4_dev *dev, struct mlx4_icm *icm)
53{
54 struct mlx4_icm_chunk *chunk, *tmp;
55 int i;
56
57 list_for_each_entry_safe(chunk, tmp, &icm->chunk_list, list) {
58 if (chunk->nsg > 0)
59 pci_unmap_sg(dev->pdev, chunk->mem, chunk->npages,
60 PCI_DMA_BIDIRECTIONAL);
61
62 for (i = 0; i < chunk->npages; ++i)
63 __free_pages(chunk->mem[i].page,
64 get_order(chunk->mem[i].length));
65
66 kfree(chunk);
67 }
68
69 kfree(icm);
70}
71
72struct mlx4_icm *mlx4_alloc_icm(struct mlx4_dev *dev, int npages,
73 gfp_t gfp_mask)
74{
75 struct mlx4_icm *icm;
76 struct mlx4_icm_chunk *chunk = NULL;
77 int cur_order;
78
79 icm = kmalloc(sizeof *icm, gfp_mask & ~(__GFP_HIGHMEM | __GFP_NOWARN));
80 if (!icm)
81 return icm;
82
83 icm->refcount = 0;
84 INIT_LIST_HEAD(&icm->chunk_list);
85
86 cur_order = get_order(MLX4_ICM_ALLOC_SIZE);
87
88 while (npages > 0) {
89 if (!chunk) {
90 chunk = kmalloc(sizeof *chunk,
91 gfp_mask & ~(__GFP_HIGHMEM | __GFP_NOWARN));
92 if (!chunk)
93 goto fail;
94
95 chunk->npages = 0;
96 chunk->nsg = 0;
97 list_add_tail(&chunk->list, &icm->chunk_list);
98 }
99
100 while (1 << cur_order > npages)
101 --cur_order;
102
103 chunk->mem[chunk->npages].page = alloc_pages(gfp_mask, cur_order);
104 if (chunk->mem[chunk->npages].page) {
105 chunk->mem[chunk->npages].length = PAGE_SIZE << cur_order;
106 chunk->mem[chunk->npages].offset = 0;
107
108 if (++chunk->npages == MLX4_ICM_CHUNK_LEN) {
109 chunk->nsg = pci_map_sg(dev->pdev, chunk->mem,
110 chunk->npages,
111 PCI_DMA_BIDIRECTIONAL);
112
113 if (chunk->nsg <= 0)
114 goto fail;
115
116 chunk = NULL;
117 }
118
119 npages -= 1 << cur_order;
120 } else {
121 --cur_order;
122 if (cur_order < 0)
123 goto fail;
124 }
125 }
126
127 if (chunk) {
128 chunk->nsg = pci_map_sg(dev->pdev, chunk->mem,
129 chunk->npages,
130 PCI_DMA_BIDIRECTIONAL);
131
132 if (chunk->nsg <= 0)
133 goto fail;
134 }
135
136 return icm;
137
138fail:
139 mlx4_free_icm(dev, icm);
140 return NULL;
141}
142
143static int mlx4_MAP_ICM(struct mlx4_dev *dev, struct mlx4_icm *icm, u64 virt)
144{
145 return mlx4_map_cmd(dev, MLX4_CMD_MAP_ICM, icm, virt);
146}
147
148int mlx4_UNMAP_ICM(struct mlx4_dev *dev, u64 virt, u32 page_count)
149{
150 return mlx4_cmd(dev, virt, page_count, 0, MLX4_CMD_UNMAP_ICM,
151 MLX4_CMD_TIME_CLASS_B);
152}
153
154int mlx4_MAP_ICM_page(struct mlx4_dev *dev, u64 dma_addr, u64 virt)
155{
156 struct mlx4_cmd_mailbox *mailbox;
157 __be64 *inbox;
158 int err;
159
160 mailbox = mlx4_alloc_cmd_mailbox(dev);
161 if (IS_ERR(mailbox))
162 return PTR_ERR(mailbox);
163 inbox = mailbox->buf;
164
165 inbox[0] = cpu_to_be64(virt);
166 inbox[1] = cpu_to_be64(dma_addr);
167
168 err = mlx4_cmd(dev, mailbox->dma, 1, 0, MLX4_CMD_MAP_ICM,
169 MLX4_CMD_TIME_CLASS_B);
170
171 mlx4_free_cmd_mailbox(dev, mailbox);
172
173 if (!err)
174 mlx4_dbg(dev, "Mapped page at %llx to %llx for ICM.\n",
175 (unsigned long long) dma_addr, (unsigned long long) virt);
176
177 return err;
178}
179
180int mlx4_MAP_ICM_AUX(struct mlx4_dev *dev, struct mlx4_icm *icm)
181{
182 return mlx4_map_cmd(dev, MLX4_CMD_MAP_ICM_AUX, icm, -1);
183}
184
185int mlx4_UNMAP_ICM_AUX(struct mlx4_dev *dev)
186{
187 return mlx4_cmd(dev, 0, 0, 0, MLX4_CMD_UNMAP_ICM_AUX, MLX4_CMD_TIME_CLASS_B);
188}
189
190int mlx4_table_get(struct mlx4_dev *dev, struct mlx4_icm_table *table, int obj)
191{
192 int i = (obj & (table->num_obj - 1)) / (MLX4_TABLE_CHUNK_SIZE / table->obj_size);
193 int ret = 0;
194
195 mutex_lock(&table->mutex);
196
197 if (table->icm[i]) {
198 ++table->icm[i]->refcount;
199 goto out;
200 }
201
202 table->icm[i] = mlx4_alloc_icm(dev, MLX4_TABLE_CHUNK_SIZE >> PAGE_SHIFT,
203 (table->lowmem ? GFP_KERNEL : GFP_HIGHUSER) |
204 __GFP_NOWARN);
205 if (!table->icm[i]) {
206 ret = -ENOMEM;
207 goto out;
208 }
209
210 if (mlx4_MAP_ICM(dev, table->icm[i], table->virt +
211 (u64) i * MLX4_TABLE_CHUNK_SIZE)) {
212 mlx4_free_icm(dev, table->icm[i]);
213 table->icm[i] = NULL;
214 ret = -ENOMEM;
215 goto out;
216 }
217
218 ++table->icm[i]->refcount;
219
220out:
221 mutex_unlock(&table->mutex);
222 return ret;
223}
224
225void mlx4_table_put(struct mlx4_dev *dev, struct mlx4_icm_table *table, int obj)
226{
227 int i;
228
229 i = (obj & (table->num_obj - 1)) / (MLX4_TABLE_CHUNK_SIZE / table->obj_size);
230
231 mutex_lock(&table->mutex);
232
233 if (--table->icm[i]->refcount == 0) {
234 mlx4_UNMAP_ICM(dev, table->virt + i * MLX4_TABLE_CHUNK_SIZE,
235 MLX4_TABLE_CHUNK_SIZE / MLX4_ICM_PAGE_SIZE);
236 mlx4_free_icm(dev, table->icm[i]);
237 table->icm[i] = NULL;
238 }
239
240 mutex_unlock(&table->mutex);
241}
242
243void *mlx4_table_find(struct mlx4_icm_table *table, int obj)
244{
245 int idx, offset, i;
246 struct mlx4_icm_chunk *chunk;
247 struct mlx4_icm *icm;
248 struct page *page = NULL;
249
250 if (!table->lowmem)
251 return NULL;
252
253 mutex_lock(&table->mutex);
254
255 idx = obj & (table->num_obj - 1);
256 icm = table->icm[idx / (MLX4_TABLE_CHUNK_SIZE / table->obj_size)];
257 offset = idx % (MLX4_TABLE_CHUNK_SIZE / table->obj_size);
258
259 if (!icm)
260 goto out;
261
262 list_for_each_entry(chunk, &icm->chunk_list, list) {
263 for (i = 0; i < chunk->npages; ++i) {
264 if (chunk->mem[i].length > offset) {
265 page = chunk->mem[i].page;
266 goto out;
267 }
268 offset -= chunk->mem[i].length;
269 }
270 }
271
272out:
273 mutex_unlock(&table->mutex);
274 return page ? lowmem_page_address(page) + offset : NULL;
275}
276
277int mlx4_table_get_range(struct mlx4_dev *dev, struct mlx4_icm_table *table,
278 int start, int end)
279{
280 int inc = MLX4_TABLE_CHUNK_SIZE / table->obj_size;
281 int i, err;
282
283 for (i = start; i <= end; i += inc) {
284 err = mlx4_table_get(dev, table, i);
285 if (err)
286 goto fail;
287 }
288
289 return 0;
290
291fail:
292 while (i > start) {
293 i -= inc;
294 mlx4_table_put(dev, table, i);
295 }
296
297 return err;
298}
299
300void mlx4_table_put_range(struct mlx4_dev *dev, struct mlx4_icm_table *table,
301 int start, int end)
302{
303 int i;
304
305 for (i = start; i <= end; i += MLX4_TABLE_CHUNK_SIZE / table->obj_size)
306 mlx4_table_put(dev, table, i);
307}
308
309int mlx4_init_icm_table(struct mlx4_dev *dev, struct mlx4_icm_table *table,
310 u64 virt, int obj_size, int nobj, int reserved,
311 int use_lowmem)
312{
313 int obj_per_chunk;
314 int num_icm;
315 unsigned chunk_size;
316 int i;
317
318 obj_per_chunk = MLX4_TABLE_CHUNK_SIZE / obj_size;
319 num_icm = (nobj + obj_per_chunk - 1) / obj_per_chunk;
320
321 table->icm = kcalloc(num_icm, sizeof *table->icm, GFP_KERNEL);
322 if (!table->icm)
323 return -ENOMEM;
324 table->virt = virt;
325 table->num_icm = num_icm;
326 table->num_obj = nobj;
327 table->obj_size = obj_size;
328 table->lowmem = use_lowmem;
329 mutex_init(&table->mutex);
330
331 for (i = 0; i * MLX4_TABLE_CHUNK_SIZE < reserved * obj_size; ++i) {
332 chunk_size = MLX4_TABLE_CHUNK_SIZE;
333 if ((i + 1) * MLX4_TABLE_CHUNK_SIZE > nobj * obj_size)
334 chunk_size = PAGE_ALIGN(nobj * obj_size - i * MLX4_TABLE_CHUNK_SIZE);
335
336 table->icm[i] = mlx4_alloc_icm(dev, chunk_size >> PAGE_SHIFT,
337 (use_lowmem ? GFP_KERNEL : GFP_HIGHUSER) |
338 __GFP_NOWARN);
339 if (!table->icm[i])
340 goto err;
341 if (mlx4_MAP_ICM(dev, table->icm[i], virt + i * MLX4_TABLE_CHUNK_SIZE)) {
342 mlx4_free_icm(dev, table->icm[i]);
343 table->icm[i] = NULL;
344 goto err;
345 }
346
347 /*
348 * Add a reference to this ICM chunk so that it never
349 * gets freed (since it contains reserved firmware objects).
350 */
351 ++table->icm[i]->refcount;
352 }
353
354 return 0;
355
356err:
357 for (i = 0; i < num_icm; ++i)
358 if (table->icm[i]) {
359 mlx4_UNMAP_ICM(dev, virt + i * MLX4_TABLE_CHUNK_SIZE,
360 MLX4_TABLE_CHUNK_SIZE / MLX4_ICM_PAGE_SIZE);
361 mlx4_free_icm(dev, table->icm[i]);
362 }
363
364 return -ENOMEM;
365}
366
367void mlx4_cleanup_icm_table(struct mlx4_dev *dev, struct mlx4_icm_table *table)
368{
369 int i;
370
371 for (i = 0; i < table->num_icm; ++i)
372 if (table->icm[i]) {
373 mlx4_UNMAP_ICM(dev, table->virt + i * MLX4_TABLE_CHUNK_SIZE,
374 MLX4_TABLE_CHUNK_SIZE / MLX4_ICM_PAGE_SIZE);
375 mlx4_free_icm(dev, table->icm[i]);
376 }
377
378 kfree(table->icm);
379}
diff --git a/drivers/net/mlx4/icm.h b/drivers/net/mlx4/icm.h
new file mode 100644
index 000000000000..bea223d879a5
--- /dev/null
+++ b/drivers/net/mlx4/icm.h
@@ -0,0 +1,135 @@
1/*
2 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
3 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
4 *
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
10 *
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
13 * conditions are met:
14 *
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * SOFTWARE.
32 */
33
34#ifndef MLX4_ICM_H
35#define MLX4_ICM_H
36
37#include <linux/list.h>
38#include <linux/pci.h>
39#include <linux/mutex.h>
40
41#define MLX4_ICM_CHUNK_LEN \
42 ((256 - sizeof (struct list_head) - 2 * sizeof (int)) / \
43 (sizeof (struct scatterlist)))
44
45enum {
46 MLX4_ICM_PAGE_SHIFT = 12,
47 MLX4_ICM_PAGE_SIZE = 1 << MLX4_ICM_PAGE_SHIFT,
48};
49
50struct mlx4_icm_chunk {
51 struct list_head list;
52 int npages;
53 int nsg;
54 struct scatterlist mem[MLX4_ICM_CHUNK_LEN];
55};
56
57struct mlx4_icm {
58 struct list_head chunk_list;
59 int refcount;
60};
61
62struct mlx4_icm_iter {
63 struct mlx4_icm *icm;
64 struct mlx4_icm_chunk *chunk;
65 int page_idx;
66};
67
68struct mlx4_dev;
69
70struct mlx4_icm *mlx4_alloc_icm(struct mlx4_dev *dev, int npages, gfp_t gfp_mask);
71void mlx4_free_icm(struct mlx4_dev *dev, struct mlx4_icm *icm);
72
73int mlx4_table_get(struct mlx4_dev *dev, struct mlx4_icm_table *table, int obj);
74void mlx4_table_put(struct mlx4_dev *dev, struct mlx4_icm_table *table, int obj);
75int mlx4_table_get_range(struct mlx4_dev *dev, struct mlx4_icm_table *table,
76 int start, int end);
77void mlx4_table_put_range(struct mlx4_dev *dev, struct mlx4_icm_table *table,
78 int start, int end);
79int mlx4_init_icm_table(struct mlx4_dev *dev, struct mlx4_icm_table *table,
80 u64 virt, int obj_size, int nobj, int reserved,
81 int use_lowmem);
82void mlx4_cleanup_icm_table(struct mlx4_dev *dev, struct mlx4_icm_table *table);
83int mlx4_table_get(struct mlx4_dev *dev, struct mlx4_icm_table *table, int obj);
84void mlx4_table_put(struct mlx4_dev *dev, struct mlx4_icm_table *table, int obj);
85void *mlx4_table_find(struct mlx4_icm_table *table, int obj);
86int mlx4_table_get_range(struct mlx4_dev *dev, struct mlx4_icm_table *table,
87 int start, int end);
88void mlx4_table_put_range(struct mlx4_dev *dev, struct mlx4_icm_table *table,
89 int start, int end);
90
91static inline void mlx4_icm_first(struct mlx4_icm *icm,
92 struct mlx4_icm_iter *iter)
93{
94 iter->icm = icm;
95 iter->chunk = list_empty(&icm->chunk_list) ?
96 NULL : list_entry(icm->chunk_list.next,
97 struct mlx4_icm_chunk, list);
98 iter->page_idx = 0;
99}
100
101static inline int mlx4_icm_last(struct mlx4_icm_iter *iter)
102{
103 return !iter->chunk;
104}
105
106static inline void mlx4_icm_next(struct mlx4_icm_iter *iter)
107{
108 if (++iter->page_idx >= iter->chunk->nsg) {
109 if (iter->chunk->list.next == &iter->icm->chunk_list) {
110 iter->chunk = NULL;
111 return;
112 }
113
114 iter->chunk = list_entry(iter->chunk->list.next,
115 struct mlx4_icm_chunk, list);
116 iter->page_idx = 0;
117 }
118}
119
120static inline dma_addr_t mlx4_icm_addr(struct mlx4_icm_iter *iter)
121{
122 return sg_dma_address(&iter->chunk->mem[iter->page_idx]);
123}
124
125static inline unsigned long mlx4_icm_size(struct mlx4_icm_iter *iter)
126{
127 return sg_dma_len(&iter->chunk->mem[iter->page_idx]);
128}
129
130int mlx4_UNMAP_ICM(struct mlx4_dev *dev, u64 virt, u32 page_count);
131int mlx4_MAP_ICM_page(struct mlx4_dev *dev, u64 dma_addr, u64 virt);
132int mlx4_MAP_ICM_AUX(struct mlx4_dev *dev, struct mlx4_icm *icm);
133int mlx4_UNMAP_ICM_AUX(struct mlx4_dev *dev);
134
135#endif /* MLX4_ICM_H */
diff --git a/drivers/net/mlx4/intf.c b/drivers/net/mlx4/intf.c
new file mode 100644
index 000000000000..65854f9e9c76
--- /dev/null
+++ b/drivers/net/mlx4/intf.c
@@ -0,0 +1,165 @@
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/mlx4/driver.h>
34
35#include "mlx4.h"
36
37struct mlx4_device_context {
38 struct list_head list;
39 struct mlx4_interface *intf;
40 void *context;
41};
42
43static LIST_HEAD(intf_list);
44static LIST_HEAD(dev_list);
45static DEFINE_MUTEX(intf_mutex);
46
47static void mlx4_add_device(struct mlx4_interface *intf, struct mlx4_priv *priv)
48{
49 struct mlx4_device_context *dev_ctx;
50
51 dev_ctx = kmalloc(sizeof *dev_ctx, GFP_KERNEL);
52 if (!dev_ctx)
53 return;
54
55 dev_ctx->intf = intf;
56 dev_ctx->context = intf->add(&priv->dev);
57
58 if (dev_ctx->context) {
59 spin_lock_irq(&priv->ctx_lock);
60 list_add_tail(&dev_ctx->list, &priv->ctx_list);
61 spin_unlock_irq(&priv->ctx_lock);
62 } else
63 kfree(dev_ctx);
64}
65
66static void mlx4_remove_device(struct mlx4_interface *intf, struct mlx4_priv *priv)
67{
68 struct mlx4_device_context *dev_ctx;
69
70 list_for_each_entry(dev_ctx, &priv->ctx_list, list)
71 if (dev_ctx->intf == intf) {
72 spin_lock_irq(&priv->ctx_lock);
73 list_del(&dev_ctx->list);
74 spin_unlock_irq(&priv->ctx_lock);
75
76 intf->remove(&priv->dev, dev_ctx->context);
77 kfree(dev_ctx);
78 return;
79 }
80}
81
82int mlx4_register_interface(struct mlx4_interface *intf)
83{
84 struct mlx4_priv *priv;
85
86 if (!intf->add || !intf->remove)
87 return -EINVAL;
88
89 mutex_lock(&intf_mutex);
90
91 list_add_tail(&intf->list, &intf_list);
92 list_for_each_entry(priv, &dev_list, dev_list)
93 mlx4_add_device(intf, priv);
94
95 mutex_unlock(&intf_mutex);
96
97 return 0;
98}
99EXPORT_SYMBOL_GPL(mlx4_register_interface);
100
101void mlx4_unregister_interface(struct mlx4_interface *intf)
102{
103 struct mlx4_priv *priv;
104
105 mutex_lock(&intf_mutex);
106
107 list_for_each_entry(priv, &dev_list, dev_list)
108 mlx4_remove_device(intf, priv);
109
110 list_del(&intf->list);
111
112 mutex_unlock(&intf_mutex);
113}
114EXPORT_SYMBOL_GPL(mlx4_unregister_interface);
115
116void mlx4_dispatch_event(struct mlx4_dev *dev, enum mlx4_event type,
117 int subtype, int port)
118{
119 struct mlx4_priv *priv = mlx4_priv(dev);
120 struct mlx4_device_context *dev_ctx;
121 unsigned long flags;
122
123 spin_lock_irqsave(&priv->ctx_lock, flags);
124
125 list_for_each_entry(dev_ctx, &priv->ctx_list, list)
126 if (dev_ctx->intf->event)
127 dev_ctx->intf->event(dev, dev_ctx->context, type,
128 subtype, port);
129
130 spin_unlock_irqrestore(&priv->ctx_lock, flags);
131}
132
133int mlx4_register_device(struct mlx4_dev *dev)
134{
135 struct mlx4_priv *priv = mlx4_priv(dev);
136 struct mlx4_interface *intf;
137
138 INIT_LIST_HEAD(&priv->ctx_list);
139 spin_lock_init(&priv->ctx_lock);
140
141 mutex_lock(&intf_mutex);
142
143 list_add_tail(&priv->dev_list, &dev_list);
144 list_for_each_entry(intf, &intf_list, list)
145 mlx4_add_device(intf, priv);
146
147 mutex_unlock(&intf_mutex);
148
149 return 0;
150}
151
152void mlx4_unregister_device(struct mlx4_dev *dev)
153{
154 struct mlx4_priv *priv = mlx4_priv(dev);
155 struct mlx4_interface *intf;
156
157 mutex_lock(&intf_mutex);
158
159 list_for_each_entry(intf, &intf_list, list)
160 mlx4_remove_device(intf, priv);
161
162 list_del(&priv->dev_list);
163
164 mutex_unlock(&intf_mutex);
165}
diff --git a/drivers/net/mlx4/main.c b/drivers/net/mlx4/main.c
new file mode 100644
index 000000000000..4debb024eaf9
--- /dev/null
+++ b/drivers/net/mlx4/main.c
@@ -0,0 +1,936 @@
1/*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
4 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
5 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
6 *
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * OpenIB.org BSD license below:
12 *
13 * Redistribution and use in source and binary forms, with or
14 * without modification, are permitted provided that the following
15 * conditions are met:
16 *
17 * - Redistributions of source code must retain the above
18 * copyright notice, this list of conditions and the following
19 * disclaimer.
20 *
21 * - Redistributions in binary form must reproduce the above
22 * copyright notice, this list of conditions and the following
23 * disclaimer in the documentation and/or other materials
24 * provided with the distribution.
25 *
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 * SOFTWARE.
34 */
35
36#include <linux/module.h>
37#include <linux/init.h>
38#include <linux/errno.h>
39#include <linux/pci.h>
40#include <linux/dma-mapping.h>
41
42#include <linux/mlx4/device.h>
43#include <linux/mlx4/doorbell.h>
44
45#include "mlx4.h"
46#include "fw.h"
47#include "icm.h"
48
49MODULE_AUTHOR("Roland Dreier");
50MODULE_DESCRIPTION("Mellanox ConnectX HCA low-level driver");
51MODULE_LICENSE("Dual BSD/GPL");
52MODULE_VERSION(DRV_VERSION);
53
54#ifdef CONFIG_MLX4_DEBUG
55
56int mlx4_debug_level = 0;
57module_param_named(debug_level, mlx4_debug_level, int, 0644);
58MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0");
59
60#endif /* CONFIG_MLX4_DEBUG */
61
62#ifdef CONFIG_PCI_MSI
63
64static int msi_x;
65module_param(msi_x, int, 0444);
66MODULE_PARM_DESC(msi_x, "attempt to use MSI-X if nonzero");
67
68#else /* CONFIG_PCI_MSI */
69
70#define msi_x (0)
71
72#endif /* CONFIG_PCI_MSI */
73
74static const char mlx4_version[] __devinitdata =
75 DRV_NAME ": Mellanox ConnectX core driver v"
76 DRV_VERSION " (" DRV_RELDATE ")\n";
77
78static struct mlx4_profile default_profile = {
79 .num_qp = 1 << 16,
80 .num_srq = 1 << 16,
81 .rdmarc_per_qp = 4,
82 .num_cq = 1 << 16,
83 .num_mcg = 1 << 13,
84 .num_mpt = 1 << 17,
85 .num_mtt = 1 << 20,
86};
87
88static int __devinit mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
89{
90 int err;
91
92 err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
93 if (err) {
94 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
95 return err;
96 }
97
98 if (dev_cap->min_page_sz > PAGE_SIZE) {
99 mlx4_err(dev, "HCA minimum page size of %d bigger than "
100 "kernel PAGE_SIZE of %ld, aborting.\n",
101 dev_cap->min_page_sz, PAGE_SIZE);
102 return -ENODEV;
103 }
104 if (dev_cap->num_ports > MLX4_MAX_PORTS) {
105 mlx4_err(dev, "HCA has %d ports, but we only support %d, "
106 "aborting.\n",
107 dev_cap->num_ports, MLX4_MAX_PORTS);
108 return -ENODEV;
109 }
110
111 if (dev_cap->uar_size > pci_resource_len(dev->pdev, 2)) {
112 mlx4_err(dev, "HCA reported UAR size of 0x%x bigger than "
113 "PCI resource 2 size of 0x%llx, aborting.\n",
114 dev_cap->uar_size,
115 (unsigned long long) pci_resource_len(dev->pdev, 2));
116 return -ENODEV;
117 }
118
119 dev->caps.num_ports = dev_cap->num_ports;
120 dev->caps.num_uars = dev_cap->uar_size / PAGE_SIZE;
121 dev->caps.vl_cap = dev_cap->max_vl;
122 dev->caps.mtu_cap = dev_cap->max_mtu;
123 dev->caps.gid_table_len = dev_cap->max_gids;
124 dev->caps.pkey_table_len = dev_cap->max_pkeys;
125 dev->caps.local_ca_ack_delay = dev_cap->local_ca_ack_delay;
126 dev->caps.bf_reg_size = dev_cap->bf_reg_size;
127 dev->caps.bf_regs_per_page = dev_cap->bf_regs_per_page;
128 dev->caps.max_sq_sg = dev_cap->max_sq_sg;
129 dev->caps.max_rq_sg = dev_cap->max_rq_sg;
130 dev->caps.max_wqes = dev_cap->max_qp_sz;
131 dev->caps.max_qp_init_rdma = dev_cap->max_requester_per_qp;
132 dev->caps.reserved_qps = dev_cap->reserved_qps;
133 dev->caps.max_srq_wqes = dev_cap->max_srq_sz;
134 dev->caps.max_srq_sge = dev_cap->max_rq_sg - 1;
135 dev->caps.reserved_srqs = dev_cap->reserved_srqs;
136 dev->caps.max_sq_desc_sz = dev_cap->max_sq_desc_sz;
137 dev->caps.max_rq_desc_sz = dev_cap->max_rq_desc_sz;
138 dev->caps.num_qp_per_mgm = MLX4_QP_PER_MGM;
139 /*
140 * Subtract 1 from the limit because we need to allocate a
141 * spare CQE so the HCA HW can tell the difference between an
142 * empty CQ and a full CQ.
143 */
144 dev->caps.max_cqes = dev_cap->max_cq_sz - 1;
145 dev->caps.reserved_cqs = dev_cap->reserved_cqs;
146 dev->caps.reserved_eqs = dev_cap->reserved_eqs;
147 dev->caps.reserved_mtts = dev_cap->reserved_mtts;
148 dev->caps.reserved_mrws = dev_cap->reserved_mrws;
149 dev->caps.reserved_uars = dev_cap->reserved_uars;
150 dev->caps.reserved_pds = dev_cap->reserved_pds;
151 dev->caps.port_width_cap = dev_cap->max_port_width;
152 dev->caps.mtt_entry_sz = MLX4_MTT_ENTRY_PER_SEG * dev_cap->mtt_entry_sz;
153 dev->caps.page_size_cap = ~(u32) (dev_cap->min_page_sz - 1);
154 dev->caps.flags = dev_cap->flags;
155 dev->caps.stat_rate_support = dev_cap->stat_rate_support;
156
157 return 0;
158}
159
160static int __devinit mlx4_load_fw(struct mlx4_dev *dev)
161{
162 struct mlx4_priv *priv = mlx4_priv(dev);
163 int err;
164
165 priv->fw.fw_icm = mlx4_alloc_icm(dev, priv->fw.fw_pages,
166 GFP_HIGHUSER | __GFP_NOWARN);
167 if (!priv->fw.fw_icm) {
168 mlx4_err(dev, "Couldn't allocate FW area, aborting.\n");
169 return -ENOMEM;
170 }
171
172 err = mlx4_MAP_FA(dev, priv->fw.fw_icm);
173 if (err) {
174 mlx4_err(dev, "MAP_FA command failed, aborting.\n");
175 goto err_free;
176 }
177
178 err = mlx4_RUN_FW(dev);
179 if (err) {
180 mlx4_err(dev, "RUN_FW command failed, aborting.\n");
181 goto err_unmap_fa;
182 }
183
184 return 0;
185
186err_unmap_fa:
187 mlx4_UNMAP_FA(dev);
188
189err_free:
190 mlx4_free_icm(dev, priv->fw.fw_icm);
191 return err;
192}
193
194static int __devinit mlx4_init_cmpt_table(struct mlx4_dev *dev, u64 cmpt_base,
195 int cmpt_entry_sz)
196{
197 struct mlx4_priv *priv = mlx4_priv(dev);
198 int err;
199
200 err = mlx4_init_icm_table(dev, &priv->qp_table.cmpt_table,
201 cmpt_base +
202 ((u64) (MLX4_CMPT_TYPE_QP *
203 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
204 cmpt_entry_sz, dev->caps.num_qps,
205 dev->caps.reserved_qps, 0);
206 if (err)
207 goto err;
208
209 err = mlx4_init_icm_table(dev, &priv->srq_table.cmpt_table,
210 cmpt_base +
211 ((u64) (MLX4_CMPT_TYPE_SRQ *
212 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
213 cmpt_entry_sz, dev->caps.num_srqs,
214 dev->caps.reserved_srqs, 0);
215 if (err)
216 goto err_qp;
217
218 err = mlx4_init_icm_table(dev, &priv->cq_table.cmpt_table,
219 cmpt_base +
220 ((u64) (MLX4_CMPT_TYPE_CQ *
221 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
222 cmpt_entry_sz, dev->caps.num_cqs,
223 dev->caps.reserved_cqs, 0);
224 if (err)
225 goto err_srq;
226
227 err = mlx4_init_icm_table(dev, &priv->eq_table.cmpt_table,
228 cmpt_base +
229 ((u64) (MLX4_CMPT_TYPE_EQ *
230 cmpt_entry_sz) << MLX4_CMPT_SHIFT),
231 cmpt_entry_sz,
232 roundup_pow_of_two(MLX4_NUM_EQ +
233 dev->caps.reserved_eqs),
234 MLX4_NUM_EQ + dev->caps.reserved_eqs, 0);
235 if (err)
236 goto err_cq;
237
238 return 0;
239
240err_cq:
241 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
242
243err_srq:
244 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
245
246err_qp:
247 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
248
249err:
250 return err;
251}
252
253static int __devinit mlx4_init_icm(struct mlx4_dev *dev,
254 struct mlx4_dev_cap *dev_cap,
255 struct mlx4_init_hca_param *init_hca,
256 u64 icm_size)
257{
258 struct mlx4_priv *priv = mlx4_priv(dev);
259 u64 aux_pages;
260 int err;
261
262 err = mlx4_SET_ICM_SIZE(dev, icm_size, &aux_pages);
263 if (err) {
264 mlx4_err(dev, "SET_ICM_SIZE command failed, aborting.\n");
265 return err;
266 }
267
268 mlx4_dbg(dev, "%lld KB of HCA context requires %lld KB aux memory.\n",
269 (unsigned long long) icm_size >> 10,
270 (unsigned long long) aux_pages << 2);
271
272 priv->fw.aux_icm = mlx4_alloc_icm(dev, aux_pages,
273 GFP_HIGHUSER | __GFP_NOWARN);
274 if (!priv->fw.aux_icm) {
275 mlx4_err(dev, "Couldn't allocate aux memory, aborting.\n");
276 return -ENOMEM;
277 }
278
279 err = mlx4_MAP_ICM_AUX(dev, priv->fw.aux_icm);
280 if (err) {
281 mlx4_err(dev, "MAP_ICM_AUX command failed, aborting.\n");
282 goto err_free_aux;
283 }
284
285 err = mlx4_init_cmpt_table(dev, init_hca->cmpt_base, dev_cap->cmpt_entry_sz);
286 if (err) {
287 mlx4_err(dev, "Failed to map cMPT context memory, aborting.\n");
288 goto err_unmap_aux;
289 }
290
291 err = mlx4_map_eq_icm(dev, init_hca->eqc_base);
292 if (err) {
293 mlx4_err(dev, "Failed to map EQ context memory, aborting.\n");
294 goto err_unmap_cmpt;
295 }
296
297 err = mlx4_init_icm_table(dev, &priv->mr_table.mtt_table,
298 init_hca->mtt_base,
299 dev->caps.mtt_entry_sz,
300 dev->caps.num_mtt_segs,
301 dev->caps.reserved_mtts, 1);
302 if (err) {
303 mlx4_err(dev, "Failed to map MTT context memory, aborting.\n");
304 goto err_unmap_eq;
305 }
306
307 err = mlx4_init_icm_table(dev, &priv->mr_table.dmpt_table,
308 init_hca->dmpt_base,
309 dev_cap->dmpt_entry_sz,
310 dev->caps.num_mpts,
311 dev->caps.reserved_mrws, 1);
312 if (err) {
313 mlx4_err(dev, "Failed to map dMPT context memory, aborting.\n");
314 goto err_unmap_mtt;
315 }
316
317 err = mlx4_init_icm_table(dev, &priv->qp_table.qp_table,
318 init_hca->qpc_base,
319 dev_cap->qpc_entry_sz,
320 dev->caps.num_qps,
321 dev->caps.reserved_qps, 0);
322 if (err) {
323 mlx4_err(dev, "Failed to map QP context memory, aborting.\n");
324 goto err_unmap_dmpt;
325 }
326
327 err = mlx4_init_icm_table(dev, &priv->qp_table.auxc_table,
328 init_hca->auxc_base,
329 dev_cap->aux_entry_sz,
330 dev->caps.num_qps,
331 dev->caps.reserved_qps, 0);
332 if (err) {
333 mlx4_err(dev, "Failed to map AUXC context memory, aborting.\n");
334 goto err_unmap_qp;
335 }
336
337 err = mlx4_init_icm_table(dev, &priv->qp_table.altc_table,
338 init_hca->altc_base,
339 dev_cap->altc_entry_sz,
340 dev->caps.num_qps,
341 dev->caps.reserved_qps, 0);
342 if (err) {
343 mlx4_err(dev, "Failed to map ALTC context memory, aborting.\n");
344 goto err_unmap_auxc;
345 }
346
347 err = mlx4_init_icm_table(dev, &priv->qp_table.rdmarc_table,
348 init_hca->rdmarc_base,
349 dev_cap->rdmarc_entry_sz << priv->qp_table.rdmarc_shift,
350 dev->caps.num_qps,
351 dev->caps.reserved_qps, 0);
352 if (err) {
353 mlx4_err(dev, "Failed to map RDMARC context memory, aborting\n");
354 goto err_unmap_altc;
355 }
356
357 err = mlx4_init_icm_table(dev, &priv->cq_table.table,
358 init_hca->cqc_base,
359 dev_cap->cqc_entry_sz,
360 dev->caps.num_cqs,
361 dev->caps.reserved_cqs, 0);
362 if (err) {
363 mlx4_err(dev, "Failed to map CQ context memory, aborting.\n");
364 goto err_unmap_rdmarc;
365 }
366
367 err = mlx4_init_icm_table(dev, &priv->srq_table.table,
368 init_hca->srqc_base,
369 dev_cap->srq_entry_sz,
370 dev->caps.num_srqs,
371 dev->caps.reserved_srqs, 0);
372 if (err) {
373 mlx4_err(dev, "Failed to map SRQ context memory, aborting.\n");
374 goto err_unmap_cq;
375 }
376
377 /*
378 * It's not strictly required, but for simplicity just map the
379 * whole multicast group table now. The table isn't very big
380 * and it's a lot easier than trying to track ref counts.
381 */
382 err = mlx4_init_icm_table(dev, &priv->mcg_table.table,
383 init_hca->mc_base, MLX4_MGM_ENTRY_SIZE,
384 dev->caps.num_mgms + dev->caps.num_amgms,
385 dev->caps.num_mgms + dev->caps.num_amgms,
386 0);
387 if (err) {
388 mlx4_err(dev, "Failed to map MCG context memory, aborting.\n");
389 goto err_unmap_srq;
390 }
391
392 return 0;
393
394err_unmap_srq:
395 mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
396
397err_unmap_cq:
398 mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
399
400err_unmap_rdmarc:
401 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
402
403err_unmap_altc:
404 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
405
406err_unmap_auxc:
407 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
408
409err_unmap_qp:
410 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
411
412err_unmap_dmpt:
413 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
414
415err_unmap_mtt:
416 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
417
418err_unmap_eq:
419 mlx4_unmap_eq_icm(dev);
420
421err_unmap_cmpt:
422 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
423 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
424 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
425 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
426
427err_unmap_aux:
428 mlx4_UNMAP_ICM_AUX(dev);
429
430err_free_aux:
431 mlx4_free_icm(dev, priv->fw.aux_icm);
432
433 return err;
434}
435
436static void mlx4_free_icms(struct mlx4_dev *dev)
437{
438 struct mlx4_priv *priv = mlx4_priv(dev);
439
440 mlx4_cleanup_icm_table(dev, &priv->mcg_table.table);
441 mlx4_cleanup_icm_table(dev, &priv->srq_table.table);
442 mlx4_cleanup_icm_table(dev, &priv->cq_table.table);
443 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table);
444 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table);
445 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table);
446 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table);
447 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table);
448 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table);
449 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table);
450 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table);
451 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table);
452 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table);
453 mlx4_unmap_eq_icm(dev);
454
455 mlx4_UNMAP_ICM_AUX(dev);
456 mlx4_free_icm(dev, priv->fw.aux_icm);
457}
458
459static void mlx4_close_hca(struct mlx4_dev *dev)
460{
461 mlx4_CLOSE_HCA(dev, 0);
462 mlx4_free_icms(dev);
463 mlx4_UNMAP_FA(dev);
464 mlx4_free_icm(dev, mlx4_priv(dev)->fw.fw_icm);
465}
466
467static int __devinit mlx4_init_hca(struct mlx4_dev *dev)
468{
469 struct mlx4_priv *priv = mlx4_priv(dev);
470 struct mlx4_adapter adapter;
471 struct mlx4_dev_cap dev_cap;
472 struct mlx4_profile profile;
473 struct mlx4_init_hca_param init_hca;
474 u64 icm_size;
475 int err;
476
477 err = mlx4_QUERY_FW(dev);
478 if (err) {
479 mlx4_err(dev, "QUERY_FW command failed, aborting.\n");
480 return err;
481 }
482
483 err = mlx4_load_fw(dev);
484 if (err) {
485 mlx4_err(dev, "Failed to start FW, aborting.\n");
486 return err;
487 }
488
489 err = mlx4_dev_cap(dev, &dev_cap);
490 if (err) {
491 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n");
492 goto err_stop_fw;
493 }
494
495 profile = default_profile;
496
497 icm_size = mlx4_make_profile(dev, &profile, &dev_cap, &init_hca);
498 if ((long long) icm_size < 0) {
499 err = icm_size;
500 goto err_stop_fw;
501 }
502
503 init_hca.log_uar_sz = ilog2(dev->caps.num_uars);
504
505 err = mlx4_init_icm(dev, &dev_cap, &init_hca, icm_size);
506 if (err)
507 goto err_stop_fw;
508
509 err = mlx4_INIT_HCA(dev, &init_hca);
510 if (err) {
511 mlx4_err(dev, "INIT_HCA command failed, aborting.\n");
512 goto err_free_icm;
513 }
514
515 err = mlx4_QUERY_ADAPTER(dev, &adapter);
516 if (err) {
517 mlx4_err(dev, "QUERY_ADAPTER command failed, aborting.\n");
518 goto err_close;
519 }
520
521 priv->eq_table.inta_pin = adapter.inta_pin;
522 priv->rev_id = adapter.revision_id;
523 memcpy(priv->board_id, adapter.board_id, sizeof priv->board_id);
524
525 return 0;
526
527err_close:
528 mlx4_close_hca(dev);
529
530err_free_icm:
531 mlx4_free_icms(dev);
532
533err_stop_fw:
534 mlx4_UNMAP_FA(dev);
535 mlx4_free_icm(dev, priv->fw.fw_icm);
536
537 return err;
538}
539
540static int __devinit mlx4_setup_hca(struct mlx4_dev *dev)
541{
542 struct mlx4_priv *priv = mlx4_priv(dev);
543 int err;
544
545 MLX4_INIT_DOORBELL_LOCK(&priv->doorbell_lock);
546
547 err = mlx4_init_uar_table(dev);
548 if (err) {
549 mlx4_err(dev, "Failed to initialize "
550 "user access region table, aborting.\n");
551 return err;
552 }
553
554 err = mlx4_uar_alloc(dev, &priv->driver_uar);
555 if (err) {
556 mlx4_err(dev, "Failed to allocate driver access region, "
557 "aborting.\n");
558 goto err_uar_table_free;
559 }
560
561 priv->kar = ioremap(priv->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
562 if (!priv->kar) {
563 mlx4_err(dev, "Couldn't map kernel access region, "
564 "aborting.\n");
565 err = -ENOMEM;
566 goto err_uar_free;
567 }
568
569 err = mlx4_init_pd_table(dev);
570 if (err) {
571 mlx4_err(dev, "Failed to initialize "
572 "protection domain table, aborting.\n");
573 goto err_kar_unmap;
574 }
575
576 err = mlx4_init_mr_table(dev);
577 if (err) {
578 mlx4_err(dev, "Failed to initialize "
579 "memory region table, aborting.\n");
580 goto err_pd_table_free;
581 }
582
583 mlx4_map_catas_buf(dev);
584
585 err = mlx4_init_eq_table(dev);
586 if (err) {
587 mlx4_err(dev, "Failed to initialize "
588 "event queue table, aborting.\n");
589 goto err_catas_buf;
590 }
591
592 err = mlx4_cmd_use_events(dev);
593 if (err) {
594 mlx4_err(dev, "Failed to switch to event-driven "
595 "firmware commands, aborting.\n");
596 goto err_eq_table_free;
597 }
598
599 err = mlx4_NOP(dev);
600 if (err) {
601 mlx4_err(dev, "NOP command failed to generate interrupt "
602 "(IRQ %d), aborting.\n",
603 priv->eq_table.eq[MLX4_EQ_ASYNC].irq);
604 if (dev->flags & MLX4_FLAG_MSI_X)
605 mlx4_err(dev, "Try again with MSI-X disabled.\n");
606 else
607 mlx4_err(dev, "BIOS or ACPI interrupt routing problem?\n");
608
609 goto err_cmd_poll;
610 }
611
612 mlx4_dbg(dev, "NOP command IRQ test passed\n");
613
614 err = mlx4_init_cq_table(dev);
615 if (err) {
616 mlx4_err(dev, "Failed to initialize "
617 "completion queue table, aborting.\n");
618 goto err_cmd_poll;
619 }
620
621 err = mlx4_init_srq_table(dev);
622 if (err) {
623 mlx4_err(dev, "Failed to initialize "
624 "shared receive queue table, aborting.\n");
625 goto err_cq_table_free;
626 }
627
628 err = mlx4_init_qp_table(dev);
629 if (err) {
630 mlx4_err(dev, "Failed to initialize "
631 "queue pair table, aborting.\n");
632 goto err_srq_table_free;
633 }
634
635 err = mlx4_init_mcg_table(dev);
636 if (err) {
637 mlx4_err(dev, "Failed to initialize "
638 "multicast group table, aborting.\n");
639 goto err_qp_table_free;
640 }
641
642 return 0;
643
644err_qp_table_free:
645 mlx4_cleanup_qp_table(dev);
646
647err_srq_table_free:
648 mlx4_cleanup_srq_table(dev);
649
650err_cq_table_free:
651 mlx4_cleanup_cq_table(dev);
652
653err_cmd_poll:
654 mlx4_cmd_use_polling(dev);
655
656err_eq_table_free:
657 mlx4_cleanup_eq_table(dev);
658
659err_catas_buf:
660 mlx4_unmap_catas_buf(dev);
661 mlx4_cleanup_mr_table(dev);
662
663err_pd_table_free:
664 mlx4_cleanup_pd_table(dev);
665
666err_kar_unmap:
667 iounmap(priv->kar);
668
669err_uar_free:
670 mlx4_uar_free(dev, &priv->driver_uar);
671
672err_uar_table_free:
673 mlx4_cleanup_uar_table(dev);
674 return err;
675}
676
677static void __devinit mlx4_enable_msi_x(struct mlx4_dev *dev)
678{
679 struct mlx4_priv *priv = mlx4_priv(dev);
680 struct msix_entry entries[MLX4_NUM_EQ];
681 int err;
682 int i;
683
684 if (msi_x) {
685 for (i = 0; i < MLX4_NUM_EQ; ++i)
686 entries[i].entry = i;
687
688 err = pci_enable_msix(dev->pdev, entries, ARRAY_SIZE(entries));
689 if (err) {
690 if (err > 0)
691 mlx4_info(dev, "Only %d MSI-X vectors available, "
692 "not using MSI-X\n", err);
693 goto no_msi;
694 }
695
696 for (i = 0; i < MLX4_NUM_EQ; ++i)
697 priv->eq_table.eq[i].irq = entries[i].vector;
698
699 dev->flags |= MLX4_FLAG_MSI_X;
700 return;
701 }
702
703no_msi:
704 for (i = 0; i < MLX4_NUM_EQ; ++i)
705 priv->eq_table.eq[i].irq = dev->pdev->irq;
706}
707
708static int __devinit mlx4_init_one(struct pci_dev *pdev,
709 const struct pci_device_id *id)
710{
711 static int mlx4_version_printed;
712 struct mlx4_priv *priv;
713 struct mlx4_dev *dev;
714 int err;
715
716 if (!mlx4_version_printed) {
717 printk(KERN_INFO "%s", mlx4_version);
718 ++mlx4_version_printed;
719 }
720
721 printk(KERN_INFO PFX "Initializing %s\n",
722 pci_name(pdev));
723
724 err = pci_enable_device(pdev);
725 if (err) {
726 dev_err(&pdev->dev, "Cannot enable PCI device, "
727 "aborting.\n");
728 return err;
729 }
730
731 /*
732 * Check for BARs. We expect 0: 1MB, 2: 8MB, 4: DDR (may not
733 * be present)
734 */
735 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
736 pci_resource_len(pdev, 0) != 1 << 20) {
737 dev_err(&pdev->dev, "Missing DCS, aborting.\n");
738 err = -ENODEV;
739 goto err_disable_pdev;
740 }
741 if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
742 dev_err(&pdev->dev, "Missing UAR, aborting.\n");
743 err = -ENODEV;
744 goto err_disable_pdev;
745 }
746
747 err = pci_request_region(pdev, 0, DRV_NAME);
748 if (err) {
749 dev_err(&pdev->dev, "Cannot request control region, aborting.\n");
750 goto err_disable_pdev;
751 }
752
753 err = pci_request_region(pdev, 2, DRV_NAME);
754 if (err) {
755 dev_err(&pdev->dev, "Cannot request UAR region, aborting.\n");
756 goto err_release_bar0;
757 }
758
759 pci_set_master(pdev);
760
761 err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
762 if (err) {
763 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask.\n");
764 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
765 if (err) {
766 dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting.\n");
767 goto err_release_bar2;
768 }
769 }
770 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
771 if (err) {
772 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit "
773 "consistent PCI DMA mask.\n");
774 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
775 if (err) {
776 dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, "
777 "aborting.\n");
778 goto err_release_bar2;
779 }
780 }
781
782 priv = kzalloc(sizeof *priv, GFP_KERNEL);
783 if (!priv) {
784 dev_err(&pdev->dev, "Device struct alloc failed, "
785 "aborting.\n");
786 err = -ENOMEM;
787 goto err_release_bar2;
788 }
789
790 dev = &priv->dev;
791 dev->pdev = pdev;
792
793 /*
794 * Now reset the HCA before we touch the PCI capabilities or
795 * attempt a firmware command, since a boot ROM may have left
796 * the HCA in an undefined state.
797 */
798 err = mlx4_reset(dev);
799 if (err) {
800 mlx4_err(dev, "Failed to reset HCA, aborting.\n");
801 goto err_free_dev;
802 }
803
804 mlx4_enable_msi_x(dev);
805
806 if (mlx4_cmd_init(dev)) {
807 mlx4_err(dev, "Failed to init command interface, aborting.\n");
808 goto err_free_dev;
809 }
810
811 err = mlx4_init_hca(dev);
812 if (err)
813 goto err_cmd;
814
815 err = mlx4_setup_hca(dev);
816 if (err)
817 goto err_close;
818
819 err = mlx4_register_device(dev);
820 if (err)
821 goto err_cleanup;
822
823 pci_set_drvdata(pdev, dev);
824
825 return 0;
826
827err_cleanup:
828 mlx4_cleanup_mcg_table(dev);
829 mlx4_cleanup_qp_table(dev);
830 mlx4_cleanup_srq_table(dev);
831 mlx4_cleanup_cq_table(dev);
832 mlx4_cmd_use_polling(dev);
833 mlx4_cleanup_eq_table(dev);
834
835 mlx4_unmap_catas_buf(dev);
836
837 mlx4_cleanup_mr_table(dev);
838 mlx4_cleanup_pd_table(dev);
839 mlx4_cleanup_uar_table(dev);
840
841err_close:
842 mlx4_close_hca(dev);
843
844err_cmd:
845 mlx4_cmd_cleanup(dev);
846
847err_free_dev:
848 if (dev->flags & MLX4_FLAG_MSI_X)
849 pci_disable_msix(pdev);
850
851 kfree(priv);
852
853err_release_bar2:
854 pci_release_region(pdev, 2);
855
856err_release_bar0:
857 pci_release_region(pdev, 0);
858
859err_disable_pdev:
860 pci_disable_device(pdev);
861 pci_set_drvdata(pdev, NULL);
862 return err;
863}
864
865static void __devexit mlx4_remove_one(struct pci_dev *pdev)
866{
867 struct mlx4_dev *dev = pci_get_drvdata(pdev);
868 struct mlx4_priv *priv = mlx4_priv(dev);
869 int p;
870
871 if (dev) {
872 mlx4_unregister_device(dev);
873
874 for (p = 1; p <= dev->caps.num_ports; ++p)
875 mlx4_CLOSE_PORT(dev, p);
876
877 mlx4_cleanup_mcg_table(dev);
878 mlx4_cleanup_qp_table(dev);
879 mlx4_cleanup_srq_table(dev);
880 mlx4_cleanup_cq_table(dev);
881 mlx4_cmd_use_polling(dev);
882 mlx4_cleanup_eq_table(dev);
883
884 mlx4_unmap_catas_buf(dev);
885
886 mlx4_cleanup_mr_table(dev);
887 mlx4_cleanup_pd_table(dev);
888
889 iounmap(priv->kar);
890 mlx4_uar_free(dev, &priv->driver_uar);
891 mlx4_cleanup_uar_table(dev);
892 mlx4_close_hca(dev);
893 mlx4_cmd_cleanup(dev);
894
895 if (dev->flags & MLX4_FLAG_MSI_X)
896 pci_disable_msix(pdev);
897
898 kfree(priv);
899 pci_release_region(pdev, 2);
900 pci_release_region(pdev, 0);
901 pci_disable_device(pdev);
902 pci_set_drvdata(pdev, NULL);
903 }
904}
905
906static struct pci_device_id mlx4_pci_table[] = {
907 { PCI_VDEVICE(MELLANOX, 0x6340) }, /* MT25408 "Hermon" SDR */
908 { PCI_VDEVICE(MELLANOX, 0x634a) }, /* MT25408 "Hermon" DDR */
909 { PCI_VDEVICE(MELLANOX, 0x6354) }, /* MT25408 "Hermon" QDR */
910 { 0, }
911};
912
913MODULE_DEVICE_TABLE(pci, mlx4_pci_table);
914
915static struct pci_driver mlx4_driver = {
916 .name = DRV_NAME,
917 .id_table = mlx4_pci_table,
918 .probe = mlx4_init_one,
919 .remove = __devexit_p(mlx4_remove_one)
920};
921
922static int __init mlx4_init(void)
923{
924 int ret;
925
926 ret = pci_register_driver(&mlx4_driver);
927 return ret < 0 ? ret : 0;
928}
929
930static void __exit mlx4_cleanup(void)
931{
932 pci_unregister_driver(&mlx4_driver);
933}
934
935module_init(mlx4_init);
936module_exit(mlx4_cleanup);
diff --git a/drivers/net/mlx4/mcg.c b/drivers/net/mlx4/mcg.c
new file mode 100644
index 000000000000..672024a0ee71
--- /dev/null
+++ b/drivers/net/mlx4/mcg.c
@@ -0,0 +1,380 @@
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/init.h>
34#include <linux/string.h>
35#include <linux/slab.h>
36
37#include <linux/mlx4/cmd.h>
38
39#include "mlx4.h"
40
41struct mlx4_mgm {
42 __be32 next_gid_index;
43 __be32 members_count;
44 u32 reserved[2];
45 u8 gid[16];
46 __be32 qp[MLX4_QP_PER_MGM];
47};
48
49static const u8 zero_gid[16]; /* automatically initialized to 0 */
50
51static int mlx4_READ_MCG(struct mlx4_dev *dev, int index,
52 struct mlx4_cmd_mailbox *mailbox)
53{
54 return mlx4_cmd_box(dev, 0, mailbox->dma, index, 0, MLX4_CMD_READ_MCG,
55 MLX4_CMD_TIME_CLASS_A);
56}
57
58static int mlx4_WRITE_MCG(struct mlx4_dev *dev, int index,
59 struct mlx4_cmd_mailbox *mailbox)
60{
61 return mlx4_cmd(dev, mailbox->dma, index, 0, MLX4_CMD_WRITE_MCG,
62 MLX4_CMD_TIME_CLASS_A);
63}
64
65static int mlx4_MGID_HASH(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
66 u16 *hash)
67{
68 u64 imm;
69 int err;
70
71 err = mlx4_cmd_imm(dev, mailbox->dma, &imm, 0, 0, MLX4_CMD_MGID_HASH,
72 MLX4_CMD_TIME_CLASS_A);
73
74 if (!err)
75 *hash = imm;
76
77 return err;
78}
79
80/*
81 * Caller must hold MCG table semaphore. gid and mgm parameters must
82 * be properly aligned for command interface.
83 *
84 * Returns 0 unless a firmware command error occurs.
85 *
86 * If GID is found in MGM or MGM is empty, *index = *hash, *prev = -1
87 * and *mgm holds MGM entry.
88 *
89 * if GID is found in AMGM, *index = index in AMGM, *prev = index of
90 * previous entry in hash chain and *mgm holds AMGM entry.
91 *
92 * If no AMGM exists for given gid, *index = -1, *prev = index of last
93 * entry in hash chain and *mgm holds end of hash chain.
94 */
95static int find_mgm(struct mlx4_dev *dev,
96 u8 *gid, struct mlx4_cmd_mailbox *mgm_mailbox,
97 u16 *hash, int *prev, int *index)
98{
99 struct mlx4_cmd_mailbox *mailbox;
100 struct mlx4_mgm *mgm = mgm_mailbox->buf;
101 u8 *mgid;
102 int err;
103
104 mailbox = mlx4_alloc_cmd_mailbox(dev);
105 if (IS_ERR(mailbox))
106 return -ENOMEM;
107 mgid = mailbox->buf;
108
109 memcpy(mgid, gid, 16);
110
111 err = mlx4_MGID_HASH(dev, mailbox, hash);
112 mlx4_free_cmd_mailbox(dev, mailbox);
113 if (err)
114 return err;
115
116 if (0)
117 mlx4_dbg(dev, "Hash for %04x:%04x:%04x:%04x:"
118 "%04x:%04x:%04x:%04x is %04x\n",
119 be16_to_cpu(((__be16 *) gid)[0]),
120 be16_to_cpu(((__be16 *) gid)[1]),
121 be16_to_cpu(((__be16 *) gid)[2]),
122 be16_to_cpu(((__be16 *) gid)[3]),
123 be16_to_cpu(((__be16 *) gid)[4]),
124 be16_to_cpu(((__be16 *) gid)[5]),
125 be16_to_cpu(((__be16 *) gid)[6]),
126 be16_to_cpu(((__be16 *) gid)[7]),
127 *hash);
128
129 *index = *hash;
130 *prev = -1;
131
132 do {
133 err = mlx4_READ_MCG(dev, *index, mgm_mailbox);
134 if (err)
135 return err;
136
137 if (!memcmp(mgm->gid, zero_gid, 16)) {
138 if (*index != *hash) {
139 mlx4_err(dev, "Found zero MGID in AMGM.\n");
140 err = -EINVAL;
141 }
142 return err;
143 }
144
145 if (!memcmp(mgm->gid, gid, 16))
146 return err;
147
148 *prev = *index;
149 *index = be32_to_cpu(mgm->next_gid_index) >> 6;
150 } while (*index);
151
152 *index = -1;
153 return err;
154}
155
156int mlx4_multicast_attach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16])
157{
158 struct mlx4_priv *priv = mlx4_priv(dev);
159 struct mlx4_cmd_mailbox *mailbox;
160 struct mlx4_mgm *mgm;
161 u32 members_count;
162 u16 hash;
163 int index, prev;
164 int link = 0;
165 int i;
166 int err;
167
168 mailbox = mlx4_alloc_cmd_mailbox(dev);
169 if (IS_ERR(mailbox))
170 return PTR_ERR(mailbox);
171 mgm = mailbox->buf;
172
173 mutex_lock(&priv->mcg_table.mutex);
174
175 err = find_mgm(dev, gid, mailbox, &hash, &prev, &index);
176 if (err)
177 goto out;
178
179 if (index != -1) {
180 if (!memcmp(mgm->gid, zero_gid, 16))
181 memcpy(mgm->gid, gid, 16);
182 } else {
183 link = 1;
184
185 index = mlx4_bitmap_alloc(&priv->mcg_table.bitmap);
186 if (index == -1) {
187 mlx4_err(dev, "No AMGM entries left\n");
188 err = -ENOMEM;
189 goto out;
190 }
191 index += dev->caps.num_mgms;
192
193 err = mlx4_READ_MCG(dev, index, mailbox);
194 if (err)
195 goto out;
196
197 memset(mgm, 0, sizeof *mgm);
198 memcpy(mgm->gid, gid, 16);
199 }
200
201 members_count = be32_to_cpu(mgm->members_count);
202 if (members_count == MLX4_QP_PER_MGM) {
203 mlx4_err(dev, "MGM at index %x is full.\n", index);
204 err = -ENOMEM;
205 goto out;
206 }
207
208 for (i = 0; i < members_count; ++i)
209 if (mgm->qp[i] == cpu_to_be32(qp->qpn)) {
210 mlx4_dbg(dev, "QP %06x already a member of MGM\n", qp->qpn);
211 err = 0;
212 goto out;
213 }
214
215 mgm->qp[members_count++] = cpu_to_be32(qp->qpn);
216 mgm->members_count = cpu_to_be32(members_count);
217
218 err = mlx4_WRITE_MCG(dev, index, mailbox);
219 if (err)
220 goto out;
221
222 if (!link)
223 goto out;
224
225 err = mlx4_READ_MCG(dev, prev, mailbox);
226 if (err)
227 goto out;
228
229 mgm->next_gid_index = cpu_to_be32(index << 6);
230
231 err = mlx4_WRITE_MCG(dev, prev, mailbox);
232 if (err)
233 goto out;
234
235out:
236 if (err && link && index != -1) {
237 if (index < dev->caps.num_mgms)
238 mlx4_warn(dev, "Got AMGM index %d < %d",
239 index, dev->caps.num_mgms);
240 else
241 mlx4_bitmap_free(&priv->mcg_table.bitmap,
242 index - dev->caps.num_mgms);
243 }
244 mutex_unlock(&priv->mcg_table.mutex);
245
246 mlx4_free_cmd_mailbox(dev, mailbox);
247 return err;
248}
249EXPORT_SYMBOL_GPL(mlx4_multicast_attach);
250
251int mlx4_multicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16])
252{
253 struct mlx4_priv *priv = mlx4_priv(dev);
254 struct mlx4_cmd_mailbox *mailbox;
255 struct mlx4_mgm *mgm;
256 u32 members_count;
257 u16 hash;
258 int prev, index;
259 int i, loc;
260 int err;
261
262 mailbox = mlx4_alloc_cmd_mailbox(dev);
263 if (IS_ERR(mailbox))
264 return PTR_ERR(mailbox);
265 mgm = mailbox->buf;
266
267 mutex_lock(&priv->mcg_table.mutex);
268
269 err = find_mgm(dev, gid, mailbox, &hash, &prev, &index);
270 if (err)
271 goto out;
272
273 if (index == -1) {
274 mlx4_err(dev, "MGID %04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x "
275 "not found\n",
276 be16_to_cpu(((__be16 *) gid)[0]),
277 be16_to_cpu(((__be16 *) gid)[1]),
278 be16_to_cpu(((__be16 *) gid)[2]),
279 be16_to_cpu(((__be16 *) gid)[3]),
280 be16_to_cpu(((__be16 *) gid)[4]),
281 be16_to_cpu(((__be16 *) gid)[5]),
282 be16_to_cpu(((__be16 *) gid)[6]),
283 be16_to_cpu(((__be16 *) gid)[7]));
284 err = -EINVAL;
285 goto out;
286 }
287
288 members_count = be32_to_cpu(mgm->members_count);
289 for (loc = -1, i = 0; i < members_count; ++i)
290 if (mgm->qp[i] == cpu_to_be32(qp->qpn))
291 loc = i;
292
293 if (loc == -1) {
294 mlx4_err(dev, "QP %06x not found in MGM\n", qp->qpn);
295 err = -EINVAL;
296 goto out;
297 }
298
299
300 mgm->members_count = cpu_to_be32(--members_count);
301 mgm->qp[loc] = mgm->qp[i - 1];
302 mgm->qp[i - 1] = 0;
303
304 err = mlx4_WRITE_MCG(dev, index, mailbox);
305 if (err)
306 goto out;
307
308 if (i != 1)
309 goto out;
310
311 if (prev == -1) {
312 /* Remove entry from MGM */
313 int amgm_index = be32_to_cpu(mgm->next_gid_index) >> 6;
314 if (amgm_index) {
315 err = mlx4_READ_MCG(dev, amgm_index, mailbox);
316 if (err)
317 goto out;
318 } else
319 memset(mgm->gid, 0, 16);
320
321 err = mlx4_WRITE_MCG(dev, index, mailbox);
322 if (err)
323 goto out;
324
325 if (amgm_index) {
326 if (amgm_index < dev->caps.num_mgms)
327 mlx4_warn(dev, "MGM entry %d had AMGM index %d < %d",
328 index, amgm_index, dev->caps.num_mgms);
329 else
330 mlx4_bitmap_free(&priv->mcg_table.bitmap,
331 amgm_index - dev->caps.num_mgms);
332 }
333 } else {
334 /* Remove entry from AMGM */
335 int cur_next_index = be32_to_cpu(mgm->next_gid_index) >> 6;
336 err = mlx4_READ_MCG(dev, prev, mailbox);
337 if (err)
338 goto out;
339
340 mgm->next_gid_index = cpu_to_be32(cur_next_index << 6);
341
342 err = mlx4_WRITE_MCG(dev, prev, mailbox);
343 if (err)
344 goto out;
345
346 if (index < dev->caps.num_mgms)
347 mlx4_warn(dev, "entry %d had next AMGM index %d < %d",
348 prev, index, dev->caps.num_mgms);
349 else
350 mlx4_bitmap_free(&priv->mcg_table.bitmap,
351 index - dev->caps.num_mgms);
352 }
353
354out:
355 mutex_unlock(&priv->mcg_table.mutex);
356
357 mlx4_free_cmd_mailbox(dev, mailbox);
358 return err;
359}
360EXPORT_SYMBOL_GPL(mlx4_multicast_detach);
361
362int __devinit mlx4_init_mcg_table(struct mlx4_dev *dev)
363{
364 struct mlx4_priv *priv = mlx4_priv(dev);
365 int err;
366
367 err = mlx4_bitmap_init(&priv->mcg_table.bitmap,
368 dev->caps.num_amgms, dev->caps.num_amgms - 1, 0);
369 if (err)
370 return err;
371
372 mutex_init(&priv->mcg_table.mutex);
373
374 return 0;
375}
376
377void mlx4_cleanup_mcg_table(struct mlx4_dev *dev)
378{
379 mlx4_bitmap_cleanup(&mlx4_priv(dev)->mcg_table.bitmap);
380}
diff --git a/drivers/net/mlx4/mlx4.h b/drivers/net/mlx4/mlx4.h
new file mode 100644
index 000000000000..9befbae3d196
--- /dev/null
+++ b/drivers/net/mlx4/mlx4.h
@@ -0,0 +1,348 @@
1/*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
4 * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved.
5 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
6 * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
7 *
8 * This software is available to you under a choice of one of two
9 * licenses. You may choose to be licensed under the terms of the GNU
10 * General Public License (GPL) Version 2, available from the file
11 * COPYING in the main directory of this source tree, or the
12 * OpenIB.org BSD license below:
13 *
14 * Redistribution and use in source and binary forms, with or
15 * without modification, are permitted provided that the following
16 * conditions are met:
17 *
18 * - Redistributions of source code must retain the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer.
21 *
22 * - Redistributions in binary form must reproduce the above
23 * copyright notice, this list of conditions and the following
24 * disclaimer in the documentation and/or other materials
25 * provided with the distribution.
26 *
27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
28 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
29 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
30 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
31 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
32 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
33 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 * SOFTWARE.
35 */
36
37#ifndef MLX4_H
38#define MLX4_H
39
40#include <linux/radix-tree.h>
41
42#include <linux/mlx4/device.h>
43#include <linux/mlx4/doorbell.h>
44
45#define DRV_NAME "mlx4_core"
46#define PFX DRV_NAME ": "
47#define DRV_VERSION "0.01"
48#define DRV_RELDATE "May 1, 2007"
49
50enum {
51 MLX4_HCR_BASE = 0x80680,
52 MLX4_HCR_SIZE = 0x0001c,
53 MLX4_CLR_INT_SIZE = 0x00008
54};
55
56enum {
57 MLX4_BOARD_ID_LEN = 64
58};
59
60enum {
61 MLX4_MGM_ENTRY_SIZE = 0x40,
62 MLX4_QP_PER_MGM = 4 * (MLX4_MGM_ENTRY_SIZE / 16 - 2),
63 MLX4_MTT_ENTRY_PER_SEG = 8
64};
65
66enum {
67 MLX4_EQ_ASYNC,
68 MLX4_EQ_COMP,
69 MLX4_EQ_CATAS,
70 MLX4_NUM_EQ
71};
72
73enum {
74 MLX4_NUM_PDS = 1 << 15
75};
76
77enum {
78 MLX4_CMPT_TYPE_QP = 0,
79 MLX4_CMPT_TYPE_SRQ = 1,
80 MLX4_CMPT_TYPE_CQ = 2,
81 MLX4_CMPT_TYPE_EQ = 3,
82 MLX4_CMPT_NUM_TYPE
83};
84
85enum {
86 MLX4_CMPT_SHIFT = 24,
87 MLX4_NUM_CMPTS = MLX4_CMPT_NUM_TYPE << MLX4_CMPT_SHIFT
88};
89
90#ifdef CONFIG_MLX4_DEBUG
91extern int mlx4_debug_level;
92
93#define mlx4_dbg(mdev, format, arg...) \
94 do { \
95 if (mlx4_debug_level) \
96 dev_printk(KERN_DEBUG, &mdev->pdev->dev, format, ## arg); \
97 } while (0)
98
99#else /* CONFIG_MLX4_DEBUG */
100
101#define mlx4_dbg(mdev, format, arg...) do { (void) mdev; } while (0)
102
103#endif /* CONFIG_MLX4_DEBUG */
104
105#define mlx4_err(mdev, format, arg...) \
106 dev_err(&mdev->pdev->dev, format, ## arg)
107#define mlx4_info(mdev, format, arg...) \
108 dev_info(&mdev->pdev->dev, format, ## arg)
109#define mlx4_warn(mdev, format, arg...) \
110 dev_warn(&mdev->pdev->dev, format, ## arg)
111
112struct mlx4_bitmap {
113 u32 last;
114 u32 top;
115 u32 max;
116 u32 mask;
117 spinlock_t lock;
118 unsigned long *table;
119};
120
121struct mlx4_buddy {
122 unsigned long **bits;
123 int max_order;
124 spinlock_t lock;
125};
126
127struct mlx4_icm;
128
129struct mlx4_icm_table {
130 u64 virt;
131 int num_icm;
132 int num_obj;
133 int obj_size;
134 int lowmem;
135 struct mutex mutex;
136 struct mlx4_icm **icm;
137};
138
139struct mlx4_eq {
140 struct mlx4_dev *dev;
141 void __iomem *doorbell;
142 int eqn;
143 u32 cons_index;
144 u16 irq;
145 u16 have_irq;
146 int nent;
147 struct mlx4_buf_list *page_list;
148 struct mlx4_mtt mtt;
149};
150
151struct mlx4_profile {
152 int num_qp;
153 int rdmarc_per_qp;
154 int num_srq;
155 int num_cq;
156 int num_mcg;
157 int num_mpt;
158 int num_mtt;
159};
160
161struct mlx4_fw {
162 u64 clr_int_base;
163 u64 catas_offset;
164 struct mlx4_icm *fw_icm;
165 struct mlx4_icm *aux_icm;
166 u32 catas_size;
167 u16 fw_pages;
168 u8 clr_int_bar;
169 u8 catas_bar;
170};
171
172struct mlx4_cmd {
173 struct pci_pool *pool;
174 void __iomem *hcr;
175 struct mutex hcr_mutex;
176 struct semaphore poll_sem;
177 struct semaphore event_sem;
178 int max_cmds;
179 spinlock_t context_lock;
180 int free_head;
181 struct mlx4_cmd_context *context;
182 u16 token_mask;
183 u8 use_events;
184 u8 toggle;
185};
186
187struct mlx4_uar_table {
188 struct mlx4_bitmap bitmap;
189};
190
191struct mlx4_mr_table {
192 struct mlx4_bitmap mpt_bitmap;
193 struct mlx4_buddy mtt_buddy;
194 u64 mtt_base;
195 u64 mpt_base;
196 struct mlx4_icm_table mtt_table;
197 struct mlx4_icm_table dmpt_table;
198};
199
200struct mlx4_cq_table {
201 struct mlx4_bitmap bitmap;
202 spinlock_t lock;
203 struct radix_tree_root tree;
204 struct mlx4_icm_table table;
205 struct mlx4_icm_table cmpt_table;
206};
207
208struct mlx4_eq_table {
209 struct mlx4_bitmap bitmap;
210 void __iomem *clr_int;
211 void __iomem *uar_map[(MLX4_NUM_EQ + 6) / 4];
212 u32 clr_mask;
213 struct mlx4_eq eq[MLX4_NUM_EQ];
214 u64 icm_virt;
215 struct page *icm_page;
216 dma_addr_t icm_dma;
217 struct mlx4_icm_table cmpt_table;
218 int have_irq;
219 u8 inta_pin;
220};
221
222struct mlx4_srq_table {
223 struct mlx4_bitmap bitmap;
224 spinlock_t lock;
225 struct radix_tree_root tree;
226 struct mlx4_icm_table table;
227 struct mlx4_icm_table cmpt_table;
228};
229
230struct mlx4_qp_table {
231 struct mlx4_bitmap bitmap;
232 u32 rdmarc_base;
233 int rdmarc_shift;
234 spinlock_t lock;
235 struct mlx4_icm_table qp_table;
236 struct mlx4_icm_table auxc_table;
237 struct mlx4_icm_table altc_table;
238 struct mlx4_icm_table rdmarc_table;
239 struct mlx4_icm_table cmpt_table;
240};
241
242struct mlx4_mcg_table {
243 struct mutex mutex;
244 struct mlx4_bitmap bitmap;
245 struct mlx4_icm_table table;
246};
247
248struct mlx4_catas_err {
249 u32 __iomem *map;
250 int size;
251};
252
253struct mlx4_priv {
254 struct mlx4_dev dev;
255
256 struct list_head dev_list;
257 struct list_head ctx_list;
258 spinlock_t ctx_lock;
259
260 struct mlx4_fw fw;
261 struct mlx4_cmd cmd;
262
263 struct mlx4_bitmap pd_bitmap;
264 struct mlx4_uar_table uar_table;
265 struct mlx4_mr_table mr_table;
266 struct mlx4_cq_table cq_table;
267 struct mlx4_eq_table eq_table;
268 struct mlx4_srq_table srq_table;
269 struct mlx4_qp_table qp_table;
270 struct mlx4_mcg_table mcg_table;
271
272 struct mlx4_catas_err catas_err;
273
274 void __iomem *clr_base;
275
276 struct mlx4_uar driver_uar;
277 void __iomem *kar;
278 MLX4_DECLARE_DOORBELL_LOCK(doorbell_lock)
279
280 u32 rev_id;
281 char board_id[MLX4_BOARD_ID_LEN];
282};
283
284static inline struct mlx4_priv *mlx4_priv(struct mlx4_dev *dev)
285{
286 return container_of(dev, struct mlx4_priv, dev);
287}
288
289u32 mlx4_bitmap_alloc(struct mlx4_bitmap *bitmap);
290void mlx4_bitmap_free(struct mlx4_bitmap *bitmap, u32 obj);
291int mlx4_bitmap_init(struct mlx4_bitmap *bitmap, u32 num, u32 mask, u32 reserved);
292void mlx4_bitmap_cleanup(struct mlx4_bitmap *bitmap);
293
294int mlx4_reset(struct mlx4_dev *dev);
295
296int mlx4_init_pd_table(struct mlx4_dev *dev);
297int mlx4_init_uar_table(struct mlx4_dev *dev);
298int mlx4_init_mr_table(struct mlx4_dev *dev);
299int mlx4_init_eq_table(struct mlx4_dev *dev);
300int mlx4_init_cq_table(struct mlx4_dev *dev);
301int mlx4_init_qp_table(struct mlx4_dev *dev);
302int mlx4_init_srq_table(struct mlx4_dev *dev);
303int mlx4_init_mcg_table(struct mlx4_dev *dev);
304
305void mlx4_cleanup_pd_table(struct mlx4_dev *dev);
306void mlx4_cleanup_uar_table(struct mlx4_dev *dev);
307void mlx4_cleanup_mr_table(struct mlx4_dev *dev);
308void mlx4_cleanup_eq_table(struct mlx4_dev *dev);
309void mlx4_cleanup_cq_table(struct mlx4_dev *dev);
310void mlx4_cleanup_qp_table(struct mlx4_dev *dev);
311void mlx4_cleanup_srq_table(struct mlx4_dev *dev);
312void mlx4_cleanup_mcg_table(struct mlx4_dev *dev);
313
314void mlx4_map_catas_buf(struct mlx4_dev *dev);
315void mlx4_unmap_catas_buf(struct mlx4_dev *dev);
316
317int mlx4_register_device(struct mlx4_dev *dev);
318void mlx4_unregister_device(struct mlx4_dev *dev);
319void mlx4_dispatch_event(struct mlx4_dev *dev, enum mlx4_event type,
320 int subtype, int port);
321
322struct mlx4_dev_cap;
323struct mlx4_init_hca_param;
324
325u64 mlx4_make_profile(struct mlx4_dev *dev,
326 struct mlx4_profile *request,
327 struct mlx4_dev_cap *dev_cap,
328 struct mlx4_init_hca_param *init_hca);
329
330int mlx4_map_eq_icm(struct mlx4_dev *dev, u64 icm_virt);
331void mlx4_unmap_eq_icm(struct mlx4_dev *dev);
332
333int mlx4_cmd_init(struct mlx4_dev *dev);
334void mlx4_cmd_cleanup(struct mlx4_dev *dev);
335void mlx4_cmd_event(struct mlx4_dev *dev, u16 token, u8 status, u64 out_param);
336int mlx4_cmd_use_events(struct mlx4_dev *dev);
337void mlx4_cmd_use_polling(struct mlx4_dev *dev);
338
339void mlx4_cq_completion(struct mlx4_dev *dev, u32 cqn);
340void mlx4_cq_event(struct mlx4_dev *dev, u32 cqn, int event_type);
341
342void mlx4_qp_event(struct mlx4_dev *dev, u32 qpn, int event_type);
343
344void mlx4_srq_event(struct mlx4_dev *dev, u32 srqn, int event_type);
345
346void mlx4_handle_catas_err(struct mlx4_dev *dev);
347
348#endif /* MLX4_H */
diff --git a/drivers/net/mlx4/mr.c b/drivers/net/mlx4/mr.c
new file mode 100644
index 000000000000..b33864dab179
--- /dev/null
+++ b/drivers/net/mlx4/mr.c
@@ -0,0 +1,479 @@
1/*
2 * Copyright (c) 2004 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
4 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 */
34
35#include <linux/init.h>
36#include <linux/errno.h>
37
38#include <linux/mlx4/cmd.h>
39
40#include "mlx4.h"
41#include "icm.h"
42
43/*
44 * Must be packed because mtt_seg is 64 bits but only aligned to 32 bits.
45 */
46struct mlx4_mpt_entry {
47 __be32 flags;
48 __be32 qpn;
49 __be32 key;
50 __be32 pd;
51 __be64 start;
52 __be64 length;
53 __be32 lkey;
54 __be32 win_cnt;
55 u8 reserved1[3];
56 u8 mtt_rep;
57 __be64 mtt_seg;
58 __be32 mtt_sz;
59 __be32 entity_size;
60 __be32 first_byte_offset;
61} __attribute__((packed));
62
63#define MLX4_MPT_FLAG_SW_OWNS (0xfUL << 28)
64#define MLX4_MPT_FLAG_MIO (1 << 17)
65#define MLX4_MPT_FLAG_BIND_ENABLE (1 << 15)
66#define MLX4_MPT_FLAG_PHYSICAL (1 << 9)
67#define MLX4_MPT_FLAG_REGION (1 << 8)
68
69#define MLX4_MTT_FLAG_PRESENT 1
70
71static u32 mlx4_buddy_alloc(struct mlx4_buddy *buddy, int order)
72{
73 int o;
74 int m;
75 u32 seg;
76
77 spin_lock(&buddy->lock);
78
79 for (o = order; o <= buddy->max_order; ++o) {
80 m = 1 << (buddy->max_order - o);
81 seg = find_first_bit(buddy->bits[o], m);
82 if (seg < m)
83 goto found;
84 }
85
86 spin_unlock(&buddy->lock);
87 return -1;
88
89 found:
90 clear_bit(seg, buddy->bits[o]);
91
92 while (o > order) {
93 --o;
94 seg <<= 1;
95 set_bit(seg ^ 1, buddy->bits[o]);
96 }
97
98 spin_unlock(&buddy->lock);
99
100 seg <<= order;
101
102 return seg;
103}
104
105static void mlx4_buddy_free(struct mlx4_buddy *buddy, u32 seg, int order)
106{
107 seg >>= order;
108
109 spin_lock(&buddy->lock);
110
111 while (test_bit(seg ^ 1, buddy->bits[order])) {
112 clear_bit(seg ^ 1, buddy->bits[order]);
113 seg >>= 1;
114 ++order;
115 }
116
117 set_bit(seg, buddy->bits[order]);
118
119 spin_unlock(&buddy->lock);
120}
121
122static int __devinit mlx4_buddy_init(struct mlx4_buddy *buddy, int max_order)
123{
124 int i, s;
125
126 buddy->max_order = max_order;
127 spin_lock_init(&buddy->lock);
128
129 buddy->bits = kzalloc((buddy->max_order + 1) * sizeof (long *),
130 GFP_KERNEL);
131 if (!buddy->bits)
132 goto err_out;
133
134 for (i = 0; i <= buddy->max_order; ++i) {
135 s = BITS_TO_LONGS(1 << (buddy->max_order - i));
136 buddy->bits[i] = kmalloc(s * sizeof (long), GFP_KERNEL);
137 if (!buddy->bits[i])
138 goto err_out_free;
139 bitmap_zero(buddy->bits[i], 1 << (buddy->max_order - i));
140 }
141
142 set_bit(0, buddy->bits[buddy->max_order]);
143
144 return 0;
145
146err_out_free:
147 for (i = 0; i <= buddy->max_order; ++i)
148 kfree(buddy->bits[i]);
149
150 kfree(buddy->bits);
151
152err_out:
153 return -ENOMEM;
154}
155
156static void mlx4_buddy_cleanup(struct mlx4_buddy *buddy)
157{
158 int i;
159
160 for (i = 0; i <= buddy->max_order; ++i)
161 kfree(buddy->bits[i]);
162
163 kfree(buddy->bits);
164}
165
166static u32 mlx4_alloc_mtt_range(struct mlx4_dev *dev, int order)
167{
168 struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table;
169 u32 seg;
170
171 seg = mlx4_buddy_alloc(&mr_table->mtt_buddy, order);
172 if (seg == -1)
173 return -1;
174
175 if (mlx4_table_get_range(dev, &mr_table->mtt_table, seg,
176 seg + (1 << order) - 1)) {
177 mlx4_buddy_free(&mr_table->mtt_buddy, seg, order);
178 return -1;
179 }
180
181 return seg;
182}
183
184int mlx4_mtt_init(struct mlx4_dev *dev, int npages, int page_shift,
185 struct mlx4_mtt *mtt)
186{
187 int i;
188
189 if (!npages) {
190 mtt->order = -1;
191 mtt->page_shift = MLX4_ICM_PAGE_SHIFT;
192 return 0;
193 } else
194 mtt->page_shift = page_shift;
195
196 for (mtt->order = 0, i = MLX4_MTT_ENTRY_PER_SEG; i < npages; i <<= 1)
197 ++mtt->order;
198
199 mtt->first_seg = mlx4_alloc_mtt_range(dev, mtt->order);
200 if (mtt->first_seg == -1)
201 return -ENOMEM;
202
203 return 0;
204}
205EXPORT_SYMBOL_GPL(mlx4_mtt_init);
206
207void mlx4_mtt_cleanup(struct mlx4_dev *dev, struct mlx4_mtt *mtt)
208{
209 struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table;
210
211 if (mtt->order < 0)
212 return;
213
214 mlx4_buddy_free(&mr_table->mtt_buddy, mtt->first_seg, mtt->order);
215 mlx4_table_put_range(dev, &mr_table->mtt_table, mtt->first_seg,
216 mtt->first_seg + (1 << mtt->order) - 1);
217}
218EXPORT_SYMBOL_GPL(mlx4_mtt_cleanup);
219
220u64 mlx4_mtt_addr(struct mlx4_dev *dev, struct mlx4_mtt *mtt)
221{
222 return (u64) mtt->first_seg * dev->caps.mtt_entry_sz;
223}
224EXPORT_SYMBOL_GPL(mlx4_mtt_addr);
225
226static u32 hw_index_to_key(u32 ind)
227{
228 return (ind >> 24) | (ind << 8);
229}
230
231static u32 key_to_hw_index(u32 key)
232{
233 return (key << 24) | (key >> 8);
234}
235
236static int mlx4_SW2HW_MPT(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
237 int mpt_index)
238{
239 return mlx4_cmd(dev, mailbox->dma, mpt_index, 0, MLX4_CMD_SW2HW_MPT,
240 MLX4_CMD_TIME_CLASS_B);
241}
242
243static int mlx4_HW2SW_MPT(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
244 int mpt_index)
245{
246 return mlx4_cmd_box(dev, 0, mailbox ? mailbox->dma : 0, mpt_index,
247 !mailbox, MLX4_CMD_HW2SW_MPT, MLX4_CMD_TIME_CLASS_B);
248}
249
250int mlx4_mr_alloc(struct mlx4_dev *dev, u32 pd, u64 iova, u64 size, u32 access,
251 int npages, int page_shift, struct mlx4_mr *mr)
252{
253 struct mlx4_priv *priv = mlx4_priv(dev);
254 u32 index;
255 int err;
256
257 index = mlx4_bitmap_alloc(&priv->mr_table.mpt_bitmap);
258 if (index == -1) {
259 err = -ENOMEM;
260 goto err;
261 }
262
263 mr->iova = iova;
264 mr->size = size;
265 mr->pd = pd;
266 mr->access = access;
267 mr->enabled = 0;
268 mr->key = hw_index_to_key(index);
269
270 err = mlx4_mtt_init(dev, npages, page_shift, &mr->mtt);
271 if (err)
272 goto err_index;
273
274 return 0;
275
276err_index:
277 mlx4_bitmap_free(&priv->mr_table.mpt_bitmap, index);
278
279err:
280 kfree(mr);
281 return err;
282}
283EXPORT_SYMBOL_GPL(mlx4_mr_alloc);
284
285void mlx4_mr_free(struct mlx4_dev *dev, struct mlx4_mr *mr)
286{
287 struct mlx4_priv *priv = mlx4_priv(dev);
288 int err;
289
290 if (mr->enabled) {
291 err = mlx4_HW2SW_MPT(dev, NULL,
292 key_to_hw_index(mr->key) &
293 (dev->caps.num_mpts - 1));
294 if (err)
295 mlx4_warn(dev, "HW2SW_MPT failed (%d)\n", err);
296 }
297
298 mlx4_mtt_cleanup(dev, &mr->mtt);
299 mlx4_bitmap_free(&priv->mr_table.mpt_bitmap, key_to_hw_index(mr->key));
300}
301EXPORT_SYMBOL_GPL(mlx4_mr_free);
302
303int mlx4_mr_enable(struct mlx4_dev *dev, struct mlx4_mr *mr)
304{
305 struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table;
306 struct mlx4_cmd_mailbox *mailbox;
307 struct mlx4_mpt_entry *mpt_entry;
308 int err;
309
310 err = mlx4_table_get(dev, &mr_table->dmpt_table, key_to_hw_index(mr->key));
311 if (err)
312 return err;
313
314 mailbox = mlx4_alloc_cmd_mailbox(dev);
315 if (IS_ERR(mailbox)) {
316 err = PTR_ERR(mailbox);
317 goto err_table;
318 }
319 mpt_entry = mailbox->buf;
320
321 memset(mpt_entry, 0, sizeof *mpt_entry);
322
323 mpt_entry->flags = cpu_to_be32(MLX4_MPT_FLAG_SW_OWNS |
324 MLX4_MPT_FLAG_MIO |
325 MLX4_MPT_FLAG_REGION |
326 mr->access);
327 if (mr->mtt.order < 0)
328 mpt_entry->flags |= cpu_to_be32(MLX4_MPT_FLAG_PHYSICAL);
329
330 mpt_entry->key = cpu_to_be32(key_to_hw_index(mr->key));
331 mpt_entry->pd = cpu_to_be32(mr->pd);
332 mpt_entry->start = cpu_to_be64(mr->iova);
333 mpt_entry->length = cpu_to_be64(mr->size);
334 mpt_entry->entity_size = cpu_to_be32(mr->mtt.page_shift);
335 mpt_entry->mtt_seg = cpu_to_be64(mlx4_mtt_addr(dev, &mr->mtt));
336
337 err = mlx4_SW2HW_MPT(dev, mailbox,
338 key_to_hw_index(mr->key) & (dev->caps.num_mpts - 1));
339 if (err) {
340 mlx4_warn(dev, "SW2HW_MPT failed (%d)\n", err);
341 goto err_cmd;
342 }
343
344 mr->enabled = 1;
345
346 mlx4_free_cmd_mailbox(dev, mailbox);
347
348 return 0;
349
350err_cmd:
351 mlx4_free_cmd_mailbox(dev, mailbox);
352
353err_table:
354 mlx4_table_put(dev, &mr_table->dmpt_table, key_to_hw_index(mr->key));
355 return err;
356}
357EXPORT_SYMBOL_GPL(mlx4_mr_enable);
358
359static int mlx4_WRITE_MTT(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
360 int num_mtt)
361{
362 return mlx4_cmd(dev, mailbox->dma, num_mtt, 0, MLX4_CMD_WRITE_MTT,
363 MLX4_CMD_TIME_CLASS_B);
364}
365
366int mlx4_write_mtt(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
367 int start_index, int npages, u64 *page_list)
368{
369 struct mlx4_cmd_mailbox *mailbox;
370 __be64 *mtt_entry;
371 int i;
372 int err = 0;
373
374 if (mtt->order < 0)
375 return -EINVAL;
376
377 mailbox = mlx4_alloc_cmd_mailbox(dev);
378 if (IS_ERR(mailbox))
379 return PTR_ERR(mailbox);
380
381 mtt_entry = mailbox->buf;
382
383 while (npages > 0) {
384 mtt_entry[0] = cpu_to_be64(mlx4_mtt_addr(dev, mtt) + start_index * 8);
385 mtt_entry[1] = 0;
386
387 for (i = 0; i < npages && i < MLX4_MAILBOX_SIZE / 8 - 2; ++i)
388 mtt_entry[i + 2] = cpu_to_be64(page_list[i] |
389 MLX4_MTT_FLAG_PRESENT);
390
391 /*
392 * If we have an odd number of entries to write, add
393 * one more dummy entry for firmware efficiency.
394 */
395 if (i & 1)
396 mtt_entry[i + 2] = 0;
397
398 err = mlx4_WRITE_MTT(dev, mailbox, (i + 1) & ~1);
399 if (err)
400 goto out;
401
402 npages -= i;
403 start_index += i;
404 page_list += i;
405 }
406
407out:
408 mlx4_free_cmd_mailbox(dev, mailbox);
409
410 return err;
411}
412EXPORT_SYMBOL_GPL(mlx4_write_mtt);
413
414int mlx4_buf_write_mtt(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
415 struct mlx4_buf *buf)
416{
417 u64 *page_list;
418 int err;
419 int i;
420
421 page_list = kmalloc(buf->npages * sizeof *page_list, GFP_KERNEL);
422 if (!page_list)
423 return -ENOMEM;
424
425 for (i = 0; i < buf->npages; ++i)
426 if (buf->nbufs == 1)
427 page_list[i] = buf->u.direct.map + (i << buf->page_shift);
428 else
429 page_list[i] = buf->u.page_list[i].map;
430
431 err = mlx4_write_mtt(dev, mtt, 0, buf->npages, page_list);
432
433 kfree(page_list);
434 return err;
435}
436EXPORT_SYMBOL_GPL(mlx4_buf_write_mtt);
437
438int __devinit mlx4_init_mr_table(struct mlx4_dev *dev)
439{
440 struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table;
441 int err;
442
443 err = mlx4_bitmap_init(&mr_table->mpt_bitmap, dev->caps.num_mpts,
444 ~0, dev->caps.reserved_mrws);
445 if (err)
446 return err;
447
448 err = mlx4_buddy_init(&mr_table->mtt_buddy,
449 ilog2(dev->caps.num_mtt_segs));
450 if (err)
451 goto err_buddy;
452
453 if (dev->caps.reserved_mtts) {
454 if (mlx4_alloc_mtt_range(dev, ilog2(dev->caps.reserved_mtts)) == -1) {
455 mlx4_warn(dev, "MTT table of order %d is too small.\n",
456 mr_table->mtt_buddy.max_order);
457 err = -ENOMEM;
458 goto err_reserve_mtts;
459 }
460 }
461
462 return 0;
463
464err_reserve_mtts:
465 mlx4_buddy_cleanup(&mr_table->mtt_buddy);
466
467err_buddy:
468 mlx4_bitmap_cleanup(&mr_table->mpt_bitmap);
469
470 return err;
471}
472
473void mlx4_cleanup_mr_table(struct mlx4_dev *dev)
474{
475 struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table;
476
477 mlx4_buddy_cleanup(&mr_table->mtt_buddy);
478 mlx4_bitmap_cleanup(&mr_table->mpt_bitmap);
479}
diff --git a/drivers/net/mlx4/pd.c b/drivers/net/mlx4/pd.c
new file mode 100644
index 000000000000..23dea1ee7750
--- /dev/null
+++ b/drivers/net/mlx4/pd.c
@@ -0,0 +1,102 @@
1/*
2 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
4 *
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
10 *
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
13 * conditions are met:
14 *
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * SOFTWARE.
32 */
33
34#include <linux/init.h>
35#include <linux/errno.h>
36
37#include <asm/page.h>
38
39#include "mlx4.h"
40#include "icm.h"
41
42int mlx4_pd_alloc(struct mlx4_dev *dev, u32 *pdn)
43{
44 struct mlx4_priv *priv = mlx4_priv(dev);
45
46 *pdn = mlx4_bitmap_alloc(&priv->pd_bitmap);
47 if (*pdn == -1)
48 return -ENOMEM;
49
50 return 0;
51}
52EXPORT_SYMBOL_GPL(mlx4_pd_alloc);
53
54void mlx4_pd_free(struct mlx4_dev *dev, u32 pdn)
55{
56 mlx4_bitmap_free(&mlx4_priv(dev)->pd_bitmap, pdn);
57}
58EXPORT_SYMBOL_GPL(mlx4_pd_free);
59
60int __devinit mlx4_init_pd_table(struct mlx4_dev *dev)
61{
62 struct mlx4_priv *priv = mlx4_priv(dev);
63
64 return mlx4_bitmap_init(&priv->pd_bitmap, dev->caps.num_pds,
65 (1 << 24) - 1, dev->caps.reserved_pds);
66}
67
68void mlx4_cleanup_pd_table(struct mlx4_dev *dev)
69{
70 mlx4_bitmap_cleanup(&mlx4_priv(dev)->pd_bitmap);
71}
72
73
74int mlx4_uar_alloc(struct mlx4_dev *dev, struct mlx4_uar *uar)
75{
76 uar->index = mlx4_bitmap_alloc(&mlx4_priv(dev)->uar_table.bitmap);
77 if (uar->index == -1)
78 return -ENOMEM;
79
80 uar->pfn = (pci_resource_start(dev->pdev, 2) >> PAGE_SHIFT) + uar->index;
81
82 return 0;
83}
84EXPORT_SYMBOL_GPL(mlx4_uar_alloc);
85
86void mlx4_uar_free(struct mlx4_dev *dev, struct mlx4_uar *uar)
87{
88 mlx4_bitmap_free(&mlx4_priv(dev)->uar_table.bitmap, uar->index);
89}
90EXPORT_SYMBOL_GPL(mlx4_uar_free);
91
92int mlx4_init_uar_table(struct mlx4_dev *dev)
93{
94 return mlx4_bitmap_init(&mlx4_priv(dev)->uar_table.bitmap,
95 dev->caps.num_uars, dev->caps.num_uars - 1,
96 max(128, dev->caps.reserved_uars));
97}
98
99void mlx4_cleanup_uar_table(struct mlx4_dev *dev)
100{
101 mlx4_bitmap_cleanup(&mlx4_priv(dev)->uar_table.bitmap);
102}
diff --git a/drivers/net/mlx4/profile.c b/drivers/net/mlx4/profile.c
new file mode 100644
index 000000000000..9ca42b213d54
--- /dev/null
+++ b/drivers/net/mlx4/profile.c
@@ -0,0 +1,238 @@
1/*
2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
4 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 */
34
35#include <linux/init.h>
36
37#include "mlx4.h"
38#include "fw.h"
39
40enum {
41 MLX4_RES_QP,
42 MLX4_RES_RDMARC,
43 MLX4_RES_ALTC,
44 MLX4_RES_AUXC,
45 MLX4_RES_SRQ,
46 MLX4_RES_CQ,
47 MLX4_RES_EQ,
48 MLX4_RES_DMPT,
49 MLX4_RES_CMPT,
50 MLX4_RES_MTT,
51 MLX4_RES_MCG,
52 MLX4_RES_NUM
53};
54
55static const char *res_name[] = {
56 [MLX4_RES_QP] = "QP",
57 [MLX4_RES_RDMARC] = "RDMARC",
58 [MLX4_RES_ALTC] = "ALTC",
59 [MLX4_RES_AUXC] = "AUXC",
60 [MLX4_RES_SRQ] = "SRQ",
61 [MLX4_RES_CQ] = "CQ",
62 [MLX4_RES_EQ] = "EQ",
63 [MLX4_RES_DMPT] = "DMPT",
64 [MLX4_RES_CMPT] = "CMPT",
65 [MLX4_RES_MTT] = "MTT",
66 [MLX4_RES_MCG] = "MCG",
67};
68
69u64 mlx4_make_profile(struct mlx4_dev *dev,
70 struct mlx4_profile *request,
71 struct mlx4_dev_cap *dev_cap,
72 struct mlx4_init_hca_param *init_hca)
73{
74 struct mlx4_priv *priv = mlx4_priv(dev);
75 struct mlx4_resource {
76 u64 size;
77 u64 start;
78 int type;
79 int num;
80 int log_num;
81 };
82
83 u64 total_size = 0;
84 struct mlx4_resource *profile;
85 struct mlx4_resource tmp;
86 int i, j;
87
88 profile = kzalloc(MLX4_RES_NUM * sizeof *profile, GFP_KERNEL);
89 if (!profile)
90 return -ENOMEM;
91
92 profile[MLX4_RES_QP].size = dev_cap->qpc_entry_sz;
93 profile[MLX4_RES_RDMARC].size = dev_cap->rdmarc_entry_sz;
94 profile[MLX4_RES_ALTC].size = dev_cap->altc_entry_sz;
95 profile[MLX4_RES_AUXC].size = dev_cap->aux_entry_sz;
96 profile[MLX4_RES_SRQ].size = dev_cap->srq_entry_sz;
97 profile[MLX4_RES_CQ].size = dev_cap->cqc_entry_sz;
98 profile[MLX4_RES_EQ].size = dev_cap->eqc_entry_sz;
99 profile[MLX4_RES_DMPT].size = dev_cap->dmpt_entry_sz;
100 profile[MLX4_RES_CMPT].size = dev_cap->cmpt_entry_sz;
101 profile[MLX4_RES_MTT].size = MLX4_MTT_ENTRY_PER_SEG * dev_cap->mtt_entry_sz;
102 profile[MLX4_RES_MCG].size = MLX4_MGM_ENTRY_SIZE;
103
104 profile[MLX4_RES_QP].num = request->num_qp;
105 profile[MLX4_RES_RDMARC].num = request->num_qp * request->rdmarc_per_qp;
106 profile[MLX4_RES_ALTC].num = request->num_qp;
107 profile[MLX4_RES_AUXC].num = request->num_qp;
108 profile[MLX4_RES_SRQ].num = request->num_srq;
109 profile[MLX4_RES_CQ].num = request->num_cq;
110 profile[MLX4_RES_EQ].num = MLX4_NUM_EQ + dev_cap->reserved_eqs;
111 profile[MLX4_RES_DMPT].num = request->num_mpt;
112 profile[MLX4_RES_CMPT].num = MLX4_NUM_CMPTS;
113 profile[MLX4_RES_MTT].num = request->num_mtt;
114 profile[MLX4_RES_MCG].num = request->num_mcg;
115
116 for (i = 0; i < MLX4_RES_NUM; ++i) {
117 profile[i].type = i;
118 profile[i].num = roundup_pow_of_two(profile[i].num);
119 profile[i].log_num = ilog2(profile[i].num);
120 profile[i].size *= profile[i].num;
121 profile[i].size = max(profile[i].size, (u64) PAGE_SIZE);
122 }
123
124 /*
125 * Sort the resources in decreasing order of size. Since they
126 * all have sizes that are powers of 2, we'll be able to keep
127 * resources aligned to their size and pack them without gaps
128 * using the sorted order.
129 */
130 for (i = MLX4_RES_NUM; i > 0; --i)
131 for (j = 1; j < i; ++j) {
132 if (profile[j].size > profile[j - 1].size) {
133 tmp = profile[j];
134 profile[j] = profile[j - 1];
135 profile[j - 1] = tmp;
136 }
137 }
138
139 for (i = 0; i < MLX4_RES_NUM; ++i) {
140 if (profile[i].size) {
141 profile[i].start = total_size;
142 total_size += profile[i].size;
143 }
144
145 if (total_size > dev_cap->max_icm_sz) {
146 mlx4_err(dev, "Profile requires 0x%llx bytes; "
147 "won't fit in 0x%llx bytes of context memory.\n",
148 (unsigned long long) total_size,
149 (unsigned long long) dev_cap->max_icm_sz);
150 kfree(profile);
151 return -ENOMEM;
152 }
153
154 if (profile[i].size)
155 mlx4_dbg(dev, " profile[%2d] (%6s): 2^%02d entries @ 0x%10llx, "
156 "size 0x%10llx\n",
157 i, res_name[profile[i].type], profile[i].log_num,
158 (unsigned long long) profile[i].start,
159 (unsigned long long) profile[i].size);
160 }
161
162 mlx4_dbg(dev, "HCA context memory: reserving %d KB\n",
163 (int) (total_size >> 10));
164
165 for (i = 0; i < MLX4_RES_NUM; ++i) {
166 switch (profile[i].type) {
167 case MLX4_RES_QP:
168 dev->caps.num_qps = profile[i].num;
169 init_hca->qpc_base = profile[i].start;
170 init_hca->log_num_qps = profile[i].log_num;
171 break;
172 case MLX4_RES_RDMARC:
173 for (priv->qp_table.rdmarc_shift = 0;
174 request->num_qp << priv->qp_table.rdmarc_shift < profile[i].num;
175 ++priv->qp_table.rdmarc_shift)
176 ; /* nothing */
177 dev->caps.max_qp_dest_rdma = 1 << priv->qp_table.rdmarc_shift;
178 priv->qp_table.rdmarc_base = (u32) profile[i].start;
179 init_hca->rdmarc_base = profile[i].start;
180 init_hca->log_rd_per_qp = priv->qp_table.rdmarc_shift;
181 break;
182 case MLX4_RES_ALTC:
183 init_hca->altc_base = profile[i].start;
184 break;
185 case MLX4_RES_AUXC:
186 init_hca->auxc_base = profile[i].start;
187 break;
188 case MLX4_RES_SRQ:
189 dev->caps.num_srqs = profile[i].num;
190 init_hca->srqc_base = profile[i].start;
191 init_hca->log_num_srqs = profile[i].log_num;
192 break;
193 case MLX4_RES_CQ:
194 dev->caps.num_cqs = profile[i].num;
195 init_hca->cqc_base = profile[i].start;
196 init_hca->log_num_cqs = profile[i].log_num;
197 break;
198 case MLX4_RES_EQ:
199 dev->caps.num_eqs = profile[i].num;
200 init_hca->eqc_base = profile[i].start;
201 init_hca->log_num_eqs = profile[i].log_num;
202 break;
203 case MLX4_RES_DMPT:
204 dev->caps.num_mpts = profile[i].num;
205 priv->mr_table.mpt_base = profile[i].start;
206 init_hca->dmpt_base = profile[i].start;
207 init_hca->log_mpt_sz = profile[i].log_num;
208 break;
209 case MLX4_RES_CMPT:
210 init_hca->cmpt_base = profile[i].start;
211 break;
212 case MLX4_RES_MTT:
213 dev->caps.num_mtt_segs = profile[i].num;
214 priv->mr_table.mtt_base = profile[i].start;
215 init_hca->mtt_base = profile[i].start;
216 break;
217 case MLX4_RES_MCG:
218 dev->caps.num_mgms = profile[i].num >> 1;
219 dev->caps.num_amgms = profile[i].num >> 1;
220 init_hca->mc_base = profile[i].start;
221 init_hca->log_mc_entry_sz = ilog2(MLX4_MGM_ENTRY_SIZE);
222 init_hca->log_mc_table_sz = profile[i].log_num;
223 init_hca->log_mc_hash_sz = profile[i].log_num - 1;
224 break;
225 default:
226 break;
227 }
228 }
229
230 /*
231 * PDs don't take any HCA memory, but we assign them as part
232 * of the HCA profile anyway.
233 */
234 dev->caps.num_pds = MLX4_NUM_PDS;
235
236 kfree(profile);
237 return total_size;
238}
diff --git a/drivers/net/mlx4/qp.c b/drivers/net/mlx4/qp.c
new file mode 100644
index 000000000000..7f8b7d55b6e1
--- /dev/null
+++ b/drivers/net/mlx4/qp.c
@@ -0,0 +1,280 @@
1/*
2 * Copyright (c) 2004 Topspin Communications. All rights reserved.
3 * Copyright (c) 2005, 2006, 2007 Cisco Systems, Inc. All rights reserved.
4 * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
5 * Copyright (c) 2004 Voltaire, Inc. All rights reserved.
6 *
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * OpenIB.org BSD license below:
12 *
13 * Redistribution and use in source and binary forms, with or
14 * without modification, are permitted provided that the following
15 * conditions are met:
16 *
17 * - Redistributions of source code must retain the above
18 * copyright notice, this list of conditions and the following
19 * disclaimer.
20 *
21 * - Redistributions in binary form must reproduce the above
22 * copyright notice, this list of conditions and the following
23 * disclaimer in the documentation and/or other materials
24 * provided with the distribution.
25 *
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 * SOFTWARE.
34 */
35
36#include <linux/init.h>
37
38#include <linux/mlx4/cmd.h>
39#include <linux/mlx4/qp.h>
40
41#include "mlx4.h"
42#include "icm.h"
43
44void mlx4_qp_event(struct mlx4_dev *dev, u32 qpn, int event_type)
45{
46 struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table;
47 struct mlx4_qp *qp;
48
49 spin_lock(&qp_table->lock);
50
51 qp = __mlx4_qp_lookup(dev, qpn);
52 if (qp)
53 atomic_inc(&qp->refcount);
54
55 spin_unlock(&qp_table->lock);
56
57 if (!qp) {
58 mlx4_warn(dev, "Async event for bogus QP %08x\n", qpn);
59 return;
60 }
61
62 qp->event(qp, event_type);
63
64 if (atomic_dec_and_test(&qp->refcount))
65 complete(&qp->free);
66}
67
68int mlx4_qp_modify(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
69 enum mlx4_qp_state cur_state, enum mlx4_qp_state new_state,
70 struct mlx4_qp_context *context, enum mlx4_qp_optpar optpar,
71 int sqd_event, struct mlx4_qp *qp)
72{
73 static const u16 op[MLX4_QP_NUM_STATE][MLX4_QP_NUM_STATE] = {
74 [MLX4_QP_STATE_RST] = {
75 [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP,
76 [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP,
77 [MLX4_QP_STATE_INIT] = MLX4_CMD_RST2INIT_QP,
78 },
79 [MLX4_QP_STATE_INIT] = {
80 [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP,
81 [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP,
82 [MLX4_QP_STATE_INIT] = MLX4_CMD_INIT2INIT_QP,
83 [MLX4_QP_STATE_RTR] = MLX4_CMD_INIT2RTR_QP,
84 },
85 [MLX4_QP_STATE_RTR] = {
86 [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP,
87 [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP,
88 [MLX4_QP_STATE_RTS] = MLX4_CMD_RTR2RTS_QP,
89 },
90 [MLX4_QP_STATE_RTS] = {
91 [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP,
92 [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP,
93 [MLX4_QP_STATE_RTS] = MLX4_CMD_RTS2RTS_QP,
94 [MLX4_QP_STATE_SQD] = MLX4_CMD_RTS2SQD_QP,
95 },
96 [MLX4_QP_STATE_SQD] = {
97 [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP,
98 [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP,
99 [MLX4_QP_STATE_RTS] = MLX4_CMD_SQD2RTS_QP,
100 [MLX4_QP_STATE_SQD] = MLX4_CMD_SQD2SQD_QP,
101 },
102 [MLX4_QP_STATE_SQER] = {
103 [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP,
104 [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP,
105 [MLX4_QP_STATE_RTS] = MLX4_CMD_SQERR2RTS_QP,
106 },
107 [MLX4_QP_STATE_ERR] = {
108 [MLX4_QP_STATE_RST] = MLX4_CMD_2RST_QP,
109 [MLX4_QP_STATE_ERR] = MLX4_CMD_2ERR_QP,
110 }
111 };
112
113 struct mlx4_cmd_mailbox *mailbox;
114 int ret = 0;
115
116 if (cur_state < 0 || cur_state >= MLX4_QP_NUM_STATE ||
117 new_state < 0 || cur_state >= MLX4_QP_NUM_STATE ||
118 !op[cur_state][new_state])
119 return -EINVAL;
120
121 if (op[cur_state][new_state] == MLX4_CMD_2RST_QP)
122 return mlx4_cmd(dev, 0, qp->qpn, 2,
123 MLX4_CMD_2RST_QP, MLX4_CMD_TIME_CLASS_A);
124
125 mailbox = mlx4_alloc_cmd_mailbox(dev);
126 if (IS_ERR(mailbox))
127 return PTR_ERR(mailbox);
128
129 if (cur_state == MLX4_QP_STATE_RST && new_state == MLX4_QP_STATE_INIT) {
130 u64 mtt_addr = mlx4_mtt_addr(dev, mtt);
131 context->mtt_base_addr_h = mtt_addr >> 32;
132 context->mtt_base_addr_l = cpu_to_be32(mtt_addr & 0xffffffff);
133 context->log_page_size = mtt->page_shift - MLX4_ICM_PAGE_SHIFT;
134 }
135
136 *(__be32 *) mailbox->buf = cpu_to_be32(optpar);
137 memcpy(mailbox->buf + 8, context, sizeof *context);
138
139 ((struct mlx4_qp_context *) (mailbox->buf + 8))->local_qpn =
140 cpu_to_be32(qp->qpn);
141
142 ret = mlx4_cmd(dev, mailbox->dma, qp->qpn | (!!sqd_event << 31),
143 new_state == MLX4_QP_STATE_RST ? 2 : 0,
144 op[cur_state][new_state], MLX4_CMD_TIME_CLASS_C);
145
146 mlx4_free_cmd_mailbox(dev, mailbox);
147 return ret;
148}
149EXPORT_SYMBOL_GPL(mlx4_qp_modify);
150
151int mlx4_qp_alloc(struct mlx4_dev *dev, int sqpn, struct mlx4_qp *qp)
152{
153 struct mlx4_priv *priv = mlx4_priv(dev);
154 struct mlx4_qp_table *qp_table = &priv->qp_table;
155 int err;
156
157 if (sqpn)
158 qp->qpn = sqpn;
159 else {
160 qp->qpn = mlx4_bitmap_alloc(&qp_table->bitmap);
161 if (qp->qpn == -1)
162 return -ENOMEM;
163 }
164
165 err = mlx4_table_get(dev, &qp_table->qp_table, qp->qpn);
166 if (err)
167 goto err_out;
168
169 err = mlx4_table_get(dev, &qp_table->auxc_table, qp->qpn);
170 if (err)
171 goto err_put_qp;
172
173 err = mlx4_table_get(dev, &qp_table->altc_table, qp->qpn);
174 if (err)
175 goto err_put_auxc;
176
177 err = mlx4_table_get(dev, &qp_table->rdmarc_table, qp->qpn);
178 if (err)
179 goto err_put_altc;
180
181 err = mlx4_table_get(dev, &qp_table->cmpt_table, qp->qpn);
182 if (err)
183 goto err_put_rdmarc;
184
185 spin_lock_irq(&qp_table->lock);
186 err = radix_tree_insert(&dev->qp_table_tree, qp->qpn & (dev->caps.num_qps - 1), qp);
187 spin_unlock_irq(&qp_table->lock);
188 if (err)
189 goto err_put_cmpt;
190
191 atomic_set(&qp->refcount, 1);
192 init_completion(&qp->free);
193
194 return 0;
195
196err_put_cmpt:
197 mlx4_table_put(dev, &qp_table->cmpt_table, qp->qpn);
198
199err_put_rdmarc:
200 mlx4_table_put(dev, &qp_table->rdmarc_table, qp->qpn);
201
202err_put_altc:
203 mlx4_table_put(dev, &qp_table->altc_table, qp->qpn);
204
205err_put_auxc:
206 mlx4_table_put(dev, &qp_table->auxc_table, qp->qpn);
207
208err_put_qp:
209 mlx4_table_put(dev, &qp_table->qp_table, qp->qpn);
210
211err_out:
212 if (!sqpn)
213 mlx4_bitmap_free(&qp_table->bitmap, qp->qpn);
214
215 return err;
216}
217EXPORT_SYMBOL_GPL(mlx4_qp_alloc);
218
219void mlx4_qp_remove(struct mlx4_dev *dev, struct mlx4_qp *qp)
220{
221 struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table;
222 unsigned long flags;
223
224 spin_lock_irqsave(&qp_table->lock, flags);
225 radix_tree_delete(&dev->qp_table_tree, qp->qpn & (dev->caps.num_qps - 1));
226 spin_unlock_irqrestore(&qp_table->lock, flags);
227}
228EXPORT_SYMBOL_GPL(mlx4_qp_remove);
229
230void mlx4_qp_free(struct mlx4_dev *dev, struct mlx4_qp *qp)
231{
232 struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table;
233
234 if (atomic_dec_and_test(&qp->refcount))
235 complete(&qp->free);
236 wait_for_completion(&qp->free);
237
238 mlx4_table_put(dev, &qp_table->cmpt_table, qp->qpn);
239 mlx4_table_put(dev, &qp_table->rdmarc_table, qp->qpn);
240 mlx4_table_put(dev, &qp_table->altc_table, qp->qpn);
241 mlx4_table_put(dev, &qp_table->auxc_table, qp->qpn);
242 mlx4_table_put(dev, &qp_table->qp_table, qp->qpn);
243
244 mlx4_bitmap_free(&qp_table->bitmap, qp->qpn);
245}
246EXPORT_SYMBOL_GPL(mlx4_qp_free);
247
248static int mlx4_CONF_SPECIAL_QP(struct mlx4_dev *dev, u32 base_qpn)
249{
250 return mlx4_cmd(dev, 0, base_qpn, 0, MLX4_CMD_CONF_SPECIAL_QP,
251 MLX4_CMD_TIME_CLASS_B);
252}
253
254int __devinit mlx4_init_qp_table(struct mlx4_dev *dev)
255{
256 struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table;
257 int err;
258
259 spin_lock_init(&qp_table->lock);
260 INIT_RADIX_TREE(&dev->qp_table_tree, GFP_ATOMIC);
261
262 /*
263 * We reserve 2 extra QPs per port for the special QPs. The
264 * block of special QPs must be aligned to a multiple of 8, so
265 * round up.
266 */
267 dev->caps.sqp_start = ALIGN(dev->caps.reserved_qps, 8);
268 err = mlx4_bitmap_init(&qp_table->bitmap, dev->caps.num_qps,
269 (1 << 24) - 1, dev->caps.sqp_start + 8);
270 if (err)
271 return err;
272
273 return mlx4_CONF_SPECIAL_QP(dev, dev->caps.sqp_start);
274}
275
276void mlx4_cleanup_qp_table(struct mlx4_dev *dev)
277{
278 mlx4_CONF_SPECIAL_QP(dev, 0);
279 mlx4_bitmap_cleanup(&mlx4_priv(dev)->qp_table.bitmap);
280}
diff --git a/drivers/net/mlx4/reset.c b/drivers/net/mlx4/reset.c
new file mode 100644
index 000000000000..51eef8492e93
--- /dev/null
+++ b/drivers/net/mlx4/reset.c
@@ -0,0 +1,181 @@
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/init.h>
34#include <linux/errno.h>
35#include <linux/pci.h>
36#include <linux/delay.h>
37#include <linux/slab.h>
38
39#include "mlx4.h"
40
41int mlx4_reset(struct mlx4_dev *dev)
42{
43 void __iomem *reset;
44 u32 *hca_header = NULL;
45 int pcie_cap;
46 u16 devctl;
47 u16 linkctl;
48 u16 vendor;
49 unsigned long end;
50 u32 sem;
51 int i;
52 int err = 0;
53
54#define MLX4_RESET_BASE 0xf0000
55#define MLX4_RESET_SIZE 0x400
56#define MLX4_SEM_OFFSET 0x3fc
57#define MLX4_RESET_OFFSET 0x10
58#define MLX4_RESET_VALUE swab32(1)
59
60#define MLX4_SEM_TIMEOUT_JIFFIES (10 * HZ)
61#define MLX4_RESET_TIMEOUT_JIFFIES (2 * HZ)
62
63 /*
64 * Reset the chip. This is somewhat ugly because we have to
65 * save off the PCI header before reset and then restore it
66 * after the chip reboots. We skip config space offsets 22
67 * and 23 since those have a special meaning.
68 */
69
70 /* Do we need to save off the full 4K PCI Express header?? */
71 hca_header = kmalloc(256, GFP_KERNEL);
72 if (!hca_header) {
73 err = -ENOMEM;
74 mlx4_err(dev, "Couldn't allocate memory to save HCA "
75 "PCI header, aborting.\n");
76 goto out;
77 }
78
79 pcie_cap = pci_find_capability(dev->pdev, PCI_CAP_ID_EXP);
80
81 for (i = 0; i < 64; ++i) {
82 if (i == 22 || i == 23)
83 continue;
84 if (pci_read_config_dword(dev->pdev, i * 4, hca_header + i)) {
85 err = -ENODEV;
86 mlx4_err(dev, "Couldn't save HCA "
87 "PCI header, aborting.\n");
88 goto out;
89 }
90 }
91
92 reset = ioremap(pci_resource_start(dev->pdev, 0) + MLX4_RESET_BASE,
93 MLX4_RESET_SIZE);
94 if (!reset) {
95 err = -ENOMEM;
96 mlx4_err(dev, "Couldn't map HCA reset register, aborting.\n");
97 goto out;
98 }
99
100 /* grab HW semaphore to lock out flash updates */
101 end = jiffies + MLX4_SEM_TIMEOUT_JIFFIES;
102 do {
103 sem = readl(reset + MLX4_SEM_OFFSET);
104 if (!sem)
105 break;
106
107 msleep(1);
108 } while (time_before(jiffies, end));
109
110 if (sem) {
111 mlx4_err(dev, "Failed to obtain HW semaphore, aborting\n");
112 err = -EAGAIN;
113 iounmap(reset);
114 goto out;
115 }
116
117 /* actually hit reset */
118 writel(MLX4_RESET_VALUE, reset + MLX4_RESET_OFFSET);
119 iounmap(reset);
120
121 end = jiffies + MLX4_RESET_TIMEOUT_JIFFIES;
122 do {
123 if (!pci_read_config_word(dev->pdev, PCI_VENDOR_ID, &vendor) &&
124 vendor != 0xffff)
125 break;
126
127 msleep(1);
128 } while (time_before(jiffies, end));
129
130 if (vendor == 0xffff) {
131 err = -ENODEV;
132 mlx4_err(dev, "PCI device did not come back after reset, "
133 "aborting.\n");
134 goto out;
135 }
136
137 /* Now restore the PCI headers */
138 if (pcie_cap) {
139 devctl = hca_header[(pcie_cap + PCI_EXP_DEVCTL) / 4];
140 if (pci_write_config_word(dev->pdev, pcie_cap + PCI_EXP_DEVCTL,
141 devctl)) {
142 err = -ENODEV;
143 mlx4_err(dev, "Couldn't restore HCA PCI Express "
144 "Device Control register, aborting.\n");
145 goto out;
146 }
147 linkctl = hca_header[(pcie_cap + PCI_EXP_LNKCTL) / 4];
148 if (pci_write_config_word(dev->pdev, pcie_cap + PCI_EXP_LNKCTL,
149 linkctl)) {
150 err = -ENODEV;
151 mlx4_err(dev, "Couldn't restore HCA PCI Express "
152 "Link control register, aborting.\n");
153 goto out;
154 }
155 }
156
157 for (i = 0; i < 16; ++i) {
158 if (i * 4 == PCI_COMMAND)
159 continue;
160
161 if (pci_write_config_dword(dev->pdev, i * 4, hca_header[i])) {
162 err = -ENODEV;
163 mlx4_err(dev, "Couldn't restore HCA reg %x, "
164 "aborting.\n", i);
165 goto out;
166 }
167 }
168
169 if (pci_write_config_dword(dev->pdev, PCI_COMMAND,
170 hca_header[PCI_COMMAND / 4])) {
171 err = -ENODEV;
172 mlx4_err(dev, "Couldn't restore HCA COMMAND, "
173 "aborting.\n");
174 goto out;
175 }
176
177out:
178 kfree(hca_header);
179
180 return err;
181}
diff --git a/drivers/net/mlx4/srq.c b/drivers/net/mlx4/srq.c
new file mode 100644
index 000000000000..2134f83aed87
--- /dev/null
+++ b/drivers/net/mlx4/srq.c
@@ -0,0 +1,227 @@
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/init.h>
34
35#include <linux/mlx4/cmd.h>
36
37#include "mlx4.h"
38#include "icm.h"
39
40struct mlx4_srq_context {
41 __be32 state_logsize_srqn;
42 u8 logstride;
43 u8 reserved1[3];
44 u8 pg_offset;
45 u8 reserved2[3];
46 u32 reserved3;
47 u8 log_page_size;
48 u8 reserved4[2];
49 u8 mtt_base_addr_h;
50 __be32 mtt_base_addr_l;
51 __be32 pd;
52 __be16 limit_watermark;
53 __be16 wqe_cnt;
54 u16 reserved5;
55 __be16 wqe_counter;
56 u32 reserved6;
57 __be64 db_rec_addr;
58};
59
60void mlx4_srq_event(struct mlx4_dev *dev, u32 srqn, int event_type)
61{
62 struct mlx4_srq_table *srq_table = &mlx4_priv(dev)->srq_table;
63 struct mlx4_srq *srq;
64
65 spin_lock(&srq_table->lock);
66
67 srq = radix_tree_lookup(&srq_table->tree, srqn & (dev->caps.num_srqs - 1));
68 if (srq)
69 atomic_inc(&srq->refcount);
70
71 spin_unlock(&srq_table->lock);
72
73 if (!srq) {
74 mlx4_warn(dev, "Async event for bogus SRQ %08x\n", srqn);
75 return;
76 }
77
78 srq->event(srq, event_type);
79
80 if (atomic_dec_and_test(&srq->refcount))
81 complete(&srq->free);
82}
83
84static int mlx4_SW2HW_SRQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
85 int srq_num)
86{
87 return mlx4_cmd(dev, mailbox->dma, srq_num, 0, MLX4_CMD_SW2HW_SRQ,
88 MLX4_CMD_TIME_CLASS_A);
89}
90
91static int mlx4_HW2SW_SRQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox,
92 int srq_num)
93{
94 return mlx4_cmd_box(dev, 0, mailbox ? mailbox->dma : 0, srq_num,
95 mailbox ? 0 : 1, MLX4_CMD_HW2SW_SRQ,
96 MLX4_CMD_TIME_CLASS_A);
97}
98
99static int mlx4_ARM_SRQ(struct mlx4_dev *dev, int srq_num, int limit_watermark)
100{
101 return mlx4_cmd(dev, limit_watermark, srq_num, 0, MLX4_CMD_ARM_SRQ,
102 MLX4_CMD_TIME_CLASS_B);
103}
104
105int mlx4_srq_alloc(struct mlx4_dev *dev, u32 pdn, struct mlx4_mtt *mtt,
106 u64 db_rec, struct mlx4_srq *srq)
107{
108 struct mlx4_srq_table *srq_table = &mlx4_priv(dev)->srq_table;
109 struct mlx4_cmd_mailbox *mailbox;
110 struct mlx4_srq_context *srq_context;
111 u64 mtt_addr;
112 int err;
113
114 srq->srqn = mlx4_bitmap_alloc(&srq_table->bitmap);
115 if (srq->srqn == -1)
116 return -ENOMEM;
117
118 err = mlx4_table_get(dev, &srq_table->table, srq->srqn);
119 if (err)
120 goto err_out;
121
122 err = mlx4_table_get(dev, &srq_table->cmpt_table, srq->srqn);
123 if (err)
124 goto err_put;
125
126 spin_lock_irq(&srq_table->lock);
127 err = radix_tree_insert(&srq_table->tree, srq->srqn, srq);
128 spin_unlock_irq(&srq_table->lock);
129 if (err)
130 goto err_cmpt_put;
131
132 mailbox = mlx4_alloc_cmd_mailbox(dev);
133 if (IS_ERR(mailbox)) {
134 err = PTR_ERR(mailbox);
135 goto err_radix;
136 }
137
138 srq_context = mailbox->buf;
139 memset(srq_context, 0, sizeof *srq_context);
140
141 srq_context->state_logsize_srqn = cpu_to_be32((ilog2(srq->max) << 24) |
142 srq->srqn);
143 srq_context->logstride = srq->wqe_shift - 4;
144 srq_context->log_page_size = mtt->page_shift - MLX4_ICM_PAGE_SHIFT;
145
146 mtt_addr = mlx4_mtt_addr(dev, mtt);
147 srq_context->mtt_base_addr_h = mtt_addr >> 32;
148 srq_context->mtt_base_addr_l = cpu_to_be32(mtt_addr & 0xffffffff);
149 srq_context->pd = cpu_to_be32(pdn);
150 srq_context->db_rec_addr = cpu_to_be64(db_rec);
151
152 err = mlx4_SW2HW_SRQ(dev, mailbox, srq->srqn);
153 mlx4_free_cmd_mailbox(dev, mailbox);
154 if (err)
155 goto err_radix;
156
157 atomic_set(&srq->refcount, 1);
158 init_completion(&srq->free);
159
160 return 0;
161
162err_radix:
163 spin_lock_irq(&srq_table->lock);
164 radix_tree_delete(&srq_table->tree, srq->srqn);
165 spin_unlock_irq(&srq_table->lock);
166
167err_cmpt_put:
168 mlx4_table_put(dev, &srq_table->cmpt_table, srq->srqn);
169
170err_put:
171 mlx4_table_put(dev, &srq_table->table, srq->srqn);
172
173err_out:
174 mlx4_bitmap_free(&srq_table->bitmap, srq->srqn);
175
176 return err;
177}
178EXPORT_SYMBOL_GPL(mlx4_srq_alloc);
179
180void mlx4_srq_free(struct mlx4_dev *dev, struct mlx4_srq *srq)
181{
182 struct mlx4_srq_table *srq_table = &mlx4_priv(dev)->srq_table;
183 int err;
184
185 err = mlx4_HW2SW_SRQ(dev, NULL, srq->srqn);
186 if (err)
187 mlx4_warn(dev, "HW2SW_SRQ failed (%d) for SRQN %06x\n", err, srq->srqn);
188
189 spin_lock_irq(&srq_table->lock);
190 radix_tree_delete(&srq_table->tree, srq->srqn);
191 spin_unlock_irq(&srq_table->lock);
192
193 if (atomic_dec_and_test(&srq->refcount))
194 complete(&srq->free);
195 wait_for_completion(&srq->free);
196
197 mlx4_table_put(dev, &srq_table->table, srq->srqn);
198 mlx4_bitmap_free(&srq_table->bitmap, srq->srqn);
199}
200EXPORT_SYMBOL_GPL(mlx4_srq_free);
201
202int mlx4_srq_arm(struct mlx4_dev *dev, struct mlx4_srq *srq, int limit_watermark)
203{
204 return mlx4_ARM_SRQ(dev, srq->srqn, limit_watermark);
205}
206EXPORT_SYMBOL_GPL(mlx4_srq_arm);
207
208int __devinit mlx4_init_srq_table(struct mlx4_dev *dev)
209{
210 struct mlx4_srq_table *srq_table = &mlx4_priv(dev)->srq_table;
211 int err;
212
213 spin_lock_init(&srq_table->lock);
214 INIT_RADIX_TREE(&srq_table->tree, GFP_ATOMIC);
215
216 err = mlx4_bitmap_init(&srq_table->bitmap, dev->caps.num_srqs,
217 dev->caps.num_srqs - 1, dev->caps.reserved_srqs);
218 if (err)
219 return err;
220
221 return 0;
222}
223
224void mlx4_cleanup_srq_table(struct mlx4_dev *dev)
225{
226 mlx4_bitmap_cleanup(&mlx4_priv(dev)->srq_table.bitmap);
227}
generated by cgit v1.2.2 (git 2.25.0) at 2024-09-20 10:58:35 -0400