Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc
[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
97         if (EHCA_BMASK_GET(HCA_CAP_SRQ, shca->hca_cap)) {
98                 props->max_srq         = props->max_qp;
99                 props->max_srq_wr      = props->max_qp_wr;
100                 props->max_srq_sge     = 3;
101         }
102
103         props->max_pkeys       = 16;
104         props->local_ca_ack_delay
105                 = rblock->local_ca_ack_delay;
106         props->max_raw_ipv6_qp
107                 = min_t(int, rblock->max_raw_ipv6_qp, INT_MAX);
108         props->max_raw_ethy_qp
109                 = min_t(int, rblock->max_raw_ethy_qp, INT_MAX);
110         props->max_mcast_grp
111                 = min_t(int, rblock->max_mcast_grp, INT_MAX);
112         props->max_mcast_qp_attach
113                 = min_t(int, rblock->max_mcast_qp_attach, INT_MAX);
114         props->max_total_mcast_qp_attach
115                 = min_t(int, rblock->max_total_mcast_qp_attach, INT_MAX);
116
117         /* translate device capabilities */
118         props->device_cap_flags = IB_DEVICE_SYS_IMAGE_GUID |
119                 IB_DEVICE_RC_RNR_NAK_GEN | IB_DEVICE_N_NOTIFY_CQ;
120         for (i = 0; i < ARRAY_SIZE(cap_mapping); i += 2)
121                 if (rblock->hca_cap_indicators & cap_mapping[i + 1])
122                         props->device_cap_flags |= cap_mapping[i];
123
124 query_device1:
125         ehca_free_fw_ctrlblock(rblock);
126
127         return ret;
128 }
129
130 int ehca_query_port(struct ib_device *ibdev,
131                     u8 port, struct ib_port_attr *props)
132 {
133         int ret = 0;
134         u64 h_ret;
135         struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
136                                               ib_device);
137         struct hipz_query_port *rblock;
138
139         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
140         if (!rblock) {
141                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
142                 return -ENOMEM;
143         }
144
145         h_ret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
146         if (h_ret != H_SUCCESS) {
147                 ehca_err(&shca->ib_device, "Can't query port properties");
148                 ret = -EINVAL;
149                 goto query_port1;
150         }
151
152         memset(props, 0, sizeof(struct ib_port_attr));
153         props->state = rblock->state;
154
155         switch (rblock->max_mtu) {
156         case 0x1:
157                 props->active_mtu = props->max_mtu = IB_MTU_256;
158                 break;
159         case 0x2:
160                 props->active_mtu = props->max_mtu = IB_MTU_512;
161                 break;
162         case 0x3:
163                 props->active_mtu = props->max_mtu = IB_MTU_1024;
164                 break;
165         case 0x4:
166                 props->active_mtu = props->max_mtu = IB_MTU_2048;
167                 break;
168         case 0x5:
169                 props->active_mtu = props->max_mtu = IB_MTU_4096;
170                 break;
171         default:
172                 ehca_err(&shca->ib_device, "Unknown MTU size: %x.",
173                          rblock->max_mtu);
174                 break;
175         }
176
177         props->port_cap_flags  = rblock->capability_mask;
178         props->gid_tbl_len     = rblock->gid_tbl_len;
179         props->max_msg_sz      = rblock->max_msg_sz;
180         props->bad_pkey_cntr   = rblock->bad_pkey_cntr;
181         props->qkey_viol_cntr  = rblock->qkey_viol_cntr;
182         props->pkey_tbl_len    = rblock->pkey_tbl_len;
183         props->lid             = rblock->lid;
184         props->sm_lid          = rblock->sm_lid;
185         props->lmc             = rblock->lmc;
186         props->sm_sl           = rblock->sm_sl;
187         props->subnet_timeout  = rblock->subnet_timeout;
188         props->init_type_reply = rblock->init_type_reply;
189
190         props->active_width    = IB_WIDTH_12X;
191         props->active_speed    = 0x1;
192
193         /* at the moment (logical) link state is always LINK_UP */
194         props->phys_state      = 0x5;
195
196 query_port1:
197         ehca_free_fw_ctrlblock(rblock);
198
199         return ret;
200 }
201
202 int ehca_query_sma_attr(struct ehca_shca *shca,
203                         u8 port, struct ehca_sma_attr *attr)
204 {
205         int ret = 0;
206         u64 h_ret;
207         struct hipz_query_port *rblock;
208
209         rblock = ehca_alloc_fw_ctrlblock(GFP_ATOMIC);
210         if (!rblock) {
211                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
212                 return -ENOMEM;
213         }
214
215         h_ret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
216         if (h_ret != H_SUCCESS) {
217                 ehca_err(&shca->ib_device, "Can't query port properties");
218                 ret = -EINVAL;
219                 goto query_sma_attr1;
220         }
221
222         memset(attr, 0, sizeof(struct ehca_sma_attr));
223
224         attr->lid    = rblock->lid;
225         attr->lmc    = rblock->lmc;
226         attr->sm_sl  = rblock->sm_sl;
227         attr->sm_lid = rblock->sm_lid;
228
229         attr->pkey_tbl_len = rblock->pkey_tbl_len;
230         memcpy(attr->pkeys, rblock->pkey_entries, sizeof(attr->pkeys));
231
232 query_sma_attr1:
233         ehca_free_fw_ctrlblock(rblock);
234
235         return ret;
236 }
237
238 int ehca_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
239 {
240         int ret = 0;
241         u64 h_ret;
242         struct ehca_shca *shca;
243         struct hipz_query_port *rblock;
244
245         shca = container_of(ibdev, struct ehca_shca, ib_device);
246         if (index > 16) {
247                 ehca_err(&shca->ib_device, "Invalid index: %x.", index);
248                 return -EINVAL;
249         }
250
251         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
252         if (!rblock) {
253                 ehca_err(&shca->ib_device,  "Can't allocate rblock memory.");
254                 return -ENOMEM;
255         }
256
257         h_ret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
258         if (h_ret != H_SUCCESS) {
259                 ehca_err(&shca->ib_device, "Can't query port properties");
260                 ret = -EINVAL;
261                 goto query_pkey1;
262         }
263
264         memcpy(pkey, &rblock->pkey_entries + index, sizeof(u16));
265
266 query_pkey1:
267         ehca_free_fw_ctrlblock(rblock);
268
269         return ret;
270 }
271
272 int ehca_query_gid(struct ib_device *ibdev, u8 port,
273                    int index, union ib_gid *gid)
274 {
275         int ret = 0;
276         u64 h_ret;
277         struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
278                                               ib_device);
279         struct hipz_query_port *rblock;
280
281         if (index > 255) {
282                 ehca_err(&shca->ib_device, "Invalid index: %x.", index);
283                 return -EINVAL;
284         }
285
286         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
287         if (!rblock) {
288                 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
289                 return -ENOMEM;
290         }
291
292         h_ret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
293         if (h_ret != H_SUCCESS) {
294                 ehca_err(&shca->ib_device, "Can't query port properties");
295                 ret = -EINVAL;
296                 goto query_gid1;
297         }
298
299         memcpy(&gid->raw[0], &rblock->gid_prefix, sizeof(u64));
300         memcpy(&gid->raw[8], &rblock->guid_entries[index], sizeof(u64));
301
302 query_gid1:
303         ehca_free_fw_ctrlblock(rblock);
304
305         return ret;
306 }
307
308 const u32 allowed_port_caps = (
309         IB_PORT_SM | IB_PORT_LED_INFO_SUP | IB_PORT_CM_SUP |
310         IB_PORT_SNMP_TUNNEL_SUP | IB_PORT_DEVICE_MGMT_SUP |
311         IB_PORT_VENDOR_CLASS_SUP);
312
313 int ehca_modify_port(struct ib_device *ibdev,
314                      u8 port, int port_modify_mask,
315                      struct ib_port_modify *props)
316 {
317         int ret = 0;
318         struct ehca_shca *shca;
319         struct hipz_query_port *rblock;
320         u32 cap;
321         u64 hret;
322
323         shca = container_of(ibdev, struct ehca_shca, ib_device);
324         if ((props->set_port_cap_mask | props->clr_port_cap_mask)
325             & ~allowed_port_caps) {
326                 ehca_err(&shca->ib_device, "Non-changeable bits set in masks  "
327                          "set=%x  clr=%x  allowed=%x", props->set_port_cap_mask,
328                          props->clr_port_cap_mask, allowed_port_caps);
329                 return -EINVAL;
330         }
331
332         if (mutex_lock_interruptible(&shca->modify_mutex))
333                 return -ERESTARTSYS;
334
335         rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
336         if (!rblock) {
337                 ehca_err(&shca->ib_device,  "Can't allocate rblock memory.");
338                 ret = -ENOMEM;
339                 goto modify_port1;
340         }
341
342         hret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
343         if (hret != H_SUCCESS) {
344                 ehca_err(&shca->ib_device, "Can't query port properties");
345                 ret = -EINVAL;
346                 goto modify_port2;
347         }
348
349         cap = (rblock->capability_mask | props->set_port_cap_mask)
350                 & ~props->clr_port_cap_mask;
351
352         hret = hipz_h_modify_port(shca->ipz_hca_handle, port,
353                                   cap, props->init_type, port_modify_mask);
354         if (hret != H_SUCCESS) {
355                 ehca_err(&shca->ib_device, "Modify port failed  hret=%lx",
356                          hret);
357                 ret = -EINVAL;
358         }
359
360 modify_port2:
361         ehca_free_fw_ctrlblock(rblock);
362
363 modify_port1:
364         mutex_unlock(&shca->modify_mutex);
365
366         return ret;
367 }