Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
[linux-2.6] / drivers / infiniband / hw / ehca / ehca_hca.c
1 /*
2  *  IBM eServer eHCA Infiniband device driver for Linux on POWER
3  *
4  *  HCA query functions
5  *
6  *  Authors: Heiko J Schick <schickhj@de.ibm.com>
7  *           Christoph Raisch <raisch@de.ibm.com>
8  *
9  *  Copyright (c) 2005 IBM Corporation
10  *
11  *  All rights reserved.
12  *
13  *  This source code is distributed under a dual license of GPL v2.0 and OpenIB
14  *  BSD.
15  *
16  * OpenIB BSD License
17  *
18  * Redistribution and use in source and binary forms, with or without
19  * modification, are permitted provided that the following conditions are met:
20  *
21  * Redistributions of source code must retain the above copyright notice, this
22  * list of conditions and the following disclaimer.
23  *
24  * Redistributions in binary form must reproduce the above copyright notice,
25  * this list of conditions and the following disclaimer in the documentation
26  * and/or other materials
27  * provided with the distribution.
28  *
29  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
30  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
33  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
34  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
35  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
36  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
37  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
38  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
39  * POSSIBILITY OF SUCH DAMAGE.
40  */
41
42 #include "ehca_tools.h"
43 #include "ehca_iverbs.h"
44 #include "hcp_if.h"
45
46 int ehca_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
47 {
48         int i, ret = 0;
49         struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
50                                               ib_device);
51         struct hipz_query_hca *rblock;
52
53         static const u32 cap_mapping[] = {
54                 IB_DEVICE_RESIZE_MAX_WR,      HCA_CAP_WQE_RESIZE,
55                 IB_DEVICE_BAD_PKEY_CNTR,      HCA_CAP_BAD_P_KEY_CTR,
56                 IB_DEVICE_BAD_QKEY_CNTR,      HCA_CAP_Q_KEY_VIOL_CTR,
57                 IB_DEVICE_RAW_MULTI,          HCA_CAP_RAW_PACKET_MCAST,
58                 IB_DEVICE_AUTO_PATH_MIG,      HCA_CAP_AUTO_PATH_MIG,
59                 IB_DEVICE_CHANGE_PHY_PORT,    HCA_CAP_SQD_RTS_PORT_CHANGE,
60                 IB_DEVICE_UD_AV_PORT_ENFORCE, HCA_CAP_AH_PORT_NR_CHECK,
61                 IB_DEVICE_CURR_QP_STATE_MOD,  HCA_CAP_CUR_QP_STATE_MOD,
62                 IB_DEVICE_SHUTDOWN_PORT,      HCA_CAP_SHUTDOWN_PORT,
63                 IB_DEVICE_INIT_TYPE,          HCA_CAP_INIT_TYPE,
64                 IB_DEVICE_PORT_ACTIVE_EVENT,  HCA_CAP_PORT_ACTIVE_EVENT,
65         };
66
67         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
68         if (!rblock) {
69                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
70                 return -ENOMEM;
71         }
72
73         if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) {
74                 ehca_err(&shca->ib_device, "Can't query device properties");
75                 ret = -EINVAL;
76                 goto query_device1;
77         }
78
79         memset(props, 0, sizeof(struct ib_device_attr));
80         props->fw_ver          = rblock->hw_ver;
81         props->max_mr_size     = rblock->max_mr_size;
82         props->vendor_id       = rblock->vendor_id >> 8;
83         props->vendor_part_id  = rblock->vendor_part_id >> 16;
84         props->hw_ver          = rblock->hw_ver;
85         props->max_qp          = min_t(int, rblock->max_qp, INT_MAX);
86         props->max_qp_wr       = min_t(int, rblock->max_wqes_wq, INT_MAX);
87         props->max_sge         = min_t(int, rblock->max_sge, INT_MAX);
88         props->max_sge_rd      = min_t(int, rblock->max_sge_rd, INT_MAX);
89         props->max_cq          = min_t(int, rblock->max_cq, INT_MAX);
90         props->max_cqe         = min_t(int, rblock->max_cqe, INT_MAX);
91         props->max_mr          = min_t(int, rblock->max_mr, INT_MAX);
92         props->max_mw          = min_t(int, rblock->max_mw, INT_MAX);
93         props->max_pd          = min_t(int, rblock->max_pd, INT_MAX);
94         props->max_ah          = min_t(int, rblock->max_ah, INT_MAX);
95         props->max_fmr         = min_t(int, rblock->max_mr, INT_MAX);
96         props->max_srq         = 0;
97         props->max_srq_wr      = 0;
98         props->max_srq_sge     = 0;
99         props->max_pkeys       = 16;
100         props->local_ca_ack_delay
101                 = rblock->local_ca_ack_delay;
102         props->max_raw_ipv6_qp
103                 = min_t(int, rblock->max_raw_ipv6_qp, INT_MAX);
104         props->max_raw_ethy_qp
105                 = min_t(int, rblock->max_raw_ethy_qp, INT_MAX);
106         props->max_mcast_grp
107                 = min_t(int, rblock->max_mcast_grp, INT_MAX);
108         props->max_mcast_qp_attach
109                 = min_t(int, rblock->max_mcast_qp_attach, INT_MAX);
110         props->max_total_mcast_qp_attach
111                 = min_t(int, rblock->max_total_mcast_qp_attach, INT_MAX);
112
113         /* translate device capabilities */
114         props->device_cap_flags = IB_DEVICE_SYS_IMAGE_GUID |
115                 IB_DEVICE_RC_RNR_NAK_GEN | IB_DEVICE_N_NOTIFY_CQ;
116         for (i = 0; i < ARRAY_SIZE(cap_mapping); i += 2)
117                 if (rblock->hca_cap_indicators & cap_mapping[i + 1])
118                         props->device_cap_flags |= cap_mapping[i];
119
120 query_device1:
121         ehca_free_fw_ctrlblock(rblock);
122
123         return ret;
124 }
125
126 int ehca_query_port(struct ib_device *ibdev,
127                     u8 port, struct ib_port_attr *props)
128 {
129         int ret = 0;
130         struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
131                                               ib_device);
132         struct hipz_query_port *rblock;
133
134         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
135         if (!rblock) {
136                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
137                 return -ENOMEM;
138         }
139
140         if (hipz_h_query_port(shca->ipz_hca_handle, port, rblock) != H_SUCCESS) {
141                 ehca_err(&shca->ib_device, "Can't query port properties");
142                 ret = -EINVAL;
143                 goto query_port1;
144         }
145
146         memset(props, 0, sizeof(struct ib_port_attr));
147         props->state = rblock->state;
148
149         switch (rblock->max_mtu) {
150         case 0x1:
151                 props->active_mtu = props->max_mtu = IB_MTU_256;
152                 break;
153         case 0x2:
154                 props->active_mtu = props->max_mtu = IB_MTU_512;
155                 break;
156         case 0x3:
157                 props->active_mtu = props->max_mtu = IB_MTU_1024;
158                 break;
159         case 0x4:
160                 props->active_mtu = props->max_mtu = IB_MTU_2048;
161                 break;
162         case 0x5:
163                 props->active_mtu = props->max_mtu = IB_MTU_4096;
164                 break;
165         default:
166                 ehca_err(&shca->ib_device, "Unknown MTU size: %x.",
167                          rblock->max_mtu);
168                 break;
169         }
170
171         props->port_cap_flags  = rblock->capability_mask;
172         props->gid_tbl_len     = rblock->gid_tbl_len;
173         props->max_msg_sz      = rblock->max_msg_sz;
174         props->bad_pkey_cntr   = rblock->bad_pkey_cntr;
175         props->qkey_viol_cntr  = rblock->qkey_viol_cntr;
176         props->pkey_tbl_len    = rblock->pkey_tbl_len;
177         props->lid             = rblock->lid;
178         props->sm_lid          = rblock->sm_lid;
179         props->lmc             = rblock->lmc;
180         props->sm_sl           = rblock->sm_sl;
181         props->subnet_timeout  = rblock->subnet_timeout;
182         props->init_type_reply = rblock->init_type_reply;
183
184         props->active_width    = IB_WIDTH_12X;
185         props->active_speed    = 0x1;
186
187         /* at the moment (logical) link state is always LINK_UP */
188         props->phys_state      = 0x5;
189
190 query_port1:
191         ehca_free_fw_ctrlblock(rblock);
192
193         return ret;
194 }
195
196 int ehca_query_sma_attr(struct ehca_shca *shca,
197                         u8 port, struct ehca_sma_attr *attr)
198 {
199         int ret = 0;
200         struct hipz_query_port *rblock;
201
202         rblock = ehca_alloc_fw_ctrlblock(GFP_ATOMIC);
203         if (!rblock) {
204                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
205                 return -ENOMEM;
206         }
207
208         if (hipz_h_query_port(shca->ipz_hca_handle, port, rblock) != H_SUCCESS) {
209                 ehca_err(&shca->ib_device, "Can't query port properties");
210                 ret = -EINVAL;
211                 goto query_sma_attr1;
212         }
213
214         memset(attr, 0, sizeof(struct ehca_sma_attr));
215
216         attr->lid    = rblock->lid;
217         attr->lmc    = rblock->lmc;
218         attr->sm_sl  = rblock->sm_sl;
219         attr->sm_lid = rblock->sm_lid;
220
221         attr->pkey_tbl_len = rblock->pkey_tbl_len;
222         memcpy(attr->pkeys, rblock->pkey_entries, sizeof(attr->pkeys));
223
224 query_sma_attr1:
225         ehca_free_fw_ctrlblock(rblock);
226
227         return ret;
228 }
229
230 int ehca_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
231 {
232         int ret = 0;
233         struct ehca_shca *shca = container_of(ibdev, struct ehca_shca, ib_device);
234         struct hipz_query_port *rblock;
235
236         if (index > 16) {
237                 ehca_err(&shca->ib_device, "Invalid index: %x.", index);
238                 return -EINVAL;
239         }
240
241         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
242         if (!rblock) {
243                 ehca_err(&shca->ib_device,  "Can't allocate rblock memory.");
244                 return -ENOMEM;
245         }
246
247         if (hipz_h_query_port(shca->ipz_hca_handle, port, rblock) != H_SUCCESS) {
248                 ehca_err(&shca->ib_device, "Can't query port properties");
249                 ret = -EINVAL;
250                 goto query_pkey1;
251         }
252
253         memcpy(pkey, &rblock->pkey_entries + index, sizeof(u16));
254
255 query_pkey1:
256         ehca_free_fw_ctrlblock(rblock);
257
258         return ret;
259 }
260
261 int ehca_query_gid(struct ib_device *ibdev, u8 port,
262                    int index, union ib_gid *gid)
263 {
264         int ret = 0;
265         struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
266                                               ib_device);
267         struct hipz_query_port *rblock;
268
269         if (index > 255) {
270                 ehca_err(&shca->ib_device, "Invalid index: %x.", index);
271                 return -EINVAL;
272         }
273
274         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
275         if (!rblock) {
276                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
277                 return -ENOMEM;
278         }
279
280         if (hipz_h_query_port(shca->ipz_hca_handle, port, rblock) != H_SUCCESS) {
281                 ehca_err(&shca->ib_device, "Can't query port properties");
282                 ret = -EINVAL;
283                 goto query_gid1;
284         }
285
286         memcpy(&gid->raw[0], &rblock->gid_prefix, sizeof(u64));
287         memcpy(&gid->raw[8], &rblock->guid_entries[index], sizeof(u64));
288
289 query_gid1:
290         ehca_free_fw_ctrlblock(rblock);
291
292         return ret;
293 }
294
295 const u32 allowed_port_caps = (
296         IB_PORT_SM | IB_PORT_LED_INFO_SUP | IB_PORT_CM_SUP |
297         IB_PORT_SNMP_TUNNEL_SUP | IB_PORT_DEVICE_MGMT_SUP |
298         IB_PORT_VENDOR_CLASS_SUP);
299
300 int ehca_modify_port(struct ib_device *ibdev,
301                      u8 port, int port_modify_mask,
302                      struct ib_port_modify *props)
303 {
304         int ret = 0;
305         struct ehca_shca *shca = container_of(ibdev, struct ehca_shca, ib_device);
306         struct hipz_query_port *rblock;
307         u32 cap;
308         u64 hret;
309
310         if ((props->set_port_cap_mask | props->clr_port_cap_mask)
311             & ~allowed_port_caps) {
312                 ehca_err(&shca->ib_device, "Non-changeable bits set in masks  "
313                          "set=%x  clr=%x  allowed=%x", props->set_port_cap_mask,
314                          props->clr_port_cap_mask, allowed_port_caps);
315                 return -EINVAL;
316         }
317
318         if (mutex_lock_interruptible(&shca->modify_mutex))
319                 return -ERESTARTSYS;
320
321         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
322         if (!rblock) {
323                 ehca_err(&shca->ib_device,  "Can't allocate rblock memory.");
324                 ret = -ENOMEM;
325                 goto modify_port1;
326         }
327
328         if (hipz_h_query_port(shca->ipz_hca_handle, port, rblock) != H_SUCCESS) {
329                 ehca_err(&shca->ib_device, "Can't query port properties");
330                 ret = -EINVAL;
331                 goto modify_port2;
332         }
333
334         cap = (rblock->capability_mask | props->set_port_cap_mask)
335                 & ~props->clr_port_cap_mask;
336
337         hret = hipz_h_modify_port(shca->ipz_hca_handle, port,
338                                   cap, props->init_type, port_modify_mask);
339         if (hret != H_SUCCESS) {
340                 ehca_err(&shca->ib_device, "Modify port failed  hret=%lx", hret);
341                 ret = -EINVAL;
342         }
343
344 modify_port2:
345         ehca_free_fw_ctrlblock(rblock);
346
347 modify_port1:
348         mutex_unlock(&shca->modify_mutex);
349
350         return ret;
351 }