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
limit_uint(unsigned int value)46 static unsigned int limit_uint(unsigned int value)
47 {
48 return min_t(unsigned int, value, INT_MAX);
49 }
50
ehca_query_device(struct ib_device * ibdev,struct ib_device_attr * props)51 int ehca_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
52 {
53 int i, ret = 0;
54 struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
55 ib_device);
56 struct hipz_query_hca *rblock;
57
58 static const u32 cap_mapping[] = {
59 IB_DEVICE_RESIZE_MAX_WR, HCA_CAP_WQE_RESIZE,
60 IB_DEVICE_BAD_PKEY_CNTR, HCA_CAP_BAD_P_KEY_CTR,
61 IB_DEVICE_BAD_QKEY_CNTR, HCA_CAP_Q_KEY_VIOL_CTR,
62 IB_DEVICE_RAW_MULTI, HCA_CAP_RAW_PACKET_MCAST,
63 IB_DEVICE_AUTO_PATH_MIG, HCA_CAP_AUTO_PATH_MIG,
64 IB_DEVICE_CHANGE_PHY_PORT, HCA_CAP_SQD_RTS_PORT_CHANGE,
65 IB_DEVICE_UD_AV_PORT_ENFORCE, HCA_CAP_AH_PORT_NR_CHECK,
66 IB_DEVICE_CURR_QP_STATE_MOD, HCA_CAP_CUR_QP_STATE_MOD,
67 IB_DEVICE_SHUTDOWN_PORT, HCA_CAP_SHUTDOWN_PORT,
68 IB_DEVICE_INIT_TYPE, HCA_CAP_INIT_TYPE,
69 IB_DEVICE_PORT_ACTIVE_EVENT, HCA_CAP_PORT_ACTIVE_EVENT,
70 };
71
72 rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
73 if (!rblock) {
74 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
75 return -ENOMEM;
76 }
77
78 if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) {
79 ehca_err(&shca->ib_device, "Can't query device properties");
80 ret = -EINVAL;
81 goto query_device1;
82 }
83
84 memset(props, 0, sizeof(struct ib_device_attr));
85 props->page_size_cap = shca->hca_cap_mr_pgsize;
86 props->fw_ver = rblock->hw_ver;
87 props->max_mr_size = rblock->max_mr_size;
88 props->vendor_id = rblock->vendor_id >> 8;
89 props->vendor_part_id = rblock->vendor_part_id >> 16;
90 props->hw_ver = rblock->hw_ver;
91 props->max_qp = limit_uint(rblock->max_qp);
92 props->max_qp_wr = limit_uint(rblock->max_wqes_wq);
93 props->max_sge = limit_uint(rblock->max_sge);
94 props->max_sge_rd = limit_uint(rblock->max_sge_rd);
95 props->max_cq = limit_uint(rblock->max_cq);
96 props->max_cqe = limit_uint(rblock->max_cqe);
97 props->max_mr = limit_uint(rblock->max_mr);
98 props->max_mw = limit_uint(rblock->max_mw);
99 props->max_pd = limit_uint(rblock->max_pd);
100 props->max_ah = limit_uint(rblock->max_ah);
101 props->max_ee = limit_uint(rblock->max_rd_ee_context);
102 props->max_rdd = limit_uint(rblock->max_rd_domain);
103 props->max_fmr = limit_uint(rblock->max_mr);
104 props->max_qp_rd_atom = limit_uint(rblock->max_rr_qp);
105 props->max_ee_rd_atom = limit_uint(rblock->max_rr_ee_context);
106 props->max_res_rd_atom = limit_uint(rblock->max_rr_hca);
107 props->max_qp_init_rd_atom = limit_uint(rblock->max_act_wqs_qp);
108 props->max_ee_init_rd_atom = limit_uint(rblock->max_act_wqs_ee_context);
109
110 if (EHCA_BMASK_GET(HCA_CAP_SRQ, shca->hca_cap)) {
111 props->max_srq = limit_uint(props->max_qp);
112 props->max_srq_wr = limit_uint(props->max_qp_wr);
113 props->max_srq_sge = 3;
114 }
115
116 props->max_pkeys = 16;
117 /* Some FW versions say 0 here; insert sensible value in that case */
118 props->local_ca_ack_delay = rblock->local_ca_ack_delay ?
119 min_t(u8, rblock->local_ca_ack_delay, 255) : 12;
120 props->max_raw_ipv6_qp = limit_uint(rblock->max_raw_ipv6_qp);
121 props->max_raw_ethy_qp = limit_uint(rblock->max_raw_ethy_qp);
122 props->max_mcast_grp = limit_uint(rblock->max_mcast_grp);
123 props->max_mcast_qp_attach = limit_uint(rblock->max_mcast_qp_attach);
124 props->max_total_mcast_qp_attach
125 = limit_uint(rblock->max_total_mcast_qp_attach);
126
127 /* translate device capabilities */
128 props->device_cap_flags = IB_DEVICE_SYS_IMAGE_GUID |
129 IB_DEVICE_RC_RNR_NAK_GEN | IB_DEVICE_N_NOTIFY_CQ;
130 for (i = 0; i < ARRAY_SIZE(cap_mapping); i += 2)
131 if (rblock->hca_cap_indicators & cap_mapping[i + 1])
132 props->device_cap_flags |= cap_mapping[i];
133
134 query_device1:
135 ehca_free_fw_ctrlblock(rblock);
136
137 return ret;
138 }
139
map_mtu(struct ehca_shca * shca,u32 fw_mtu)140 static enum ib_mtu map_mtu(struct ehca_shca *shca, u32 fw_mtu)
141 {
142 switch (fw_mtu) {
143 case 0x1:
144 return IB_MTU_256;
145 case 0x2:
146 return IB_MTU_512;
147 case 0x3:
148 return IB_MTU_1024;
149 case 0x4:
150 return IB_MTU_2048;
151 case 0x5:
152 return IB_MTU_4096;
153 default:
154 ehca_err(&shca->ib_device, "Unknown MTU size: %x.",
155 fw_mtu);
156 return 0;
157 }
158 }
159
map_number_of_vls(struct ehca_shca * shca,u32 vl_cap)160 static u8 map_number_of_vls(struct ehca_shca *shca, u32 vl_cap)
161 {
162 switch (vl_cap) {
163 case 0x1:
164 return 1;
165 case 0x2:
166 return 2;
167 case 0x3:
168 return 4;
169 case 0x4:
170 return 8;
171 case 0x5:
172 return 15;
173 default:
174 ehca_err(&shca->ib_device, "invalid Vl Capability: %x.",
175 vl_cap);
176 return 0;
177 }
178 }
179
ehca_query_port(struct ib_device * ibdev,u8 port,struct ib_port_attr * props)180 int ehca_query_port(struct ib_device *ibdev,
181 u8 port, struct ib_port_attr *props)
182 {
183 int ret = 0;
184 u64 h_ret;
185 struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
186 ib_device);
187 struct hipz_query_port *rblock;
188
189 rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
190 if (!rblock) {
191 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
192 return -ENOMEM;
193 }
194
195 h_ret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
196 if (h_ret != H_SUCCESS) {
197 ehca_err(&shca->ib_device, "Can't query port properties");
198 ret = -EINVAL;
199 goto query_port1;
200 }
201
202 memset(props, 0, sizeof(struct ib_port_attr));
203
204 props->active_mtu = props->max_mtu = map_mtu(shca, rblock->max_mtu);
205 props->port_cap_flags = rblock->capability_mask;
206 props->gid_tbl_len = rblock->gid_tbl_len;
207 if (rblock->max_msg_sz)
208 props->max_msg_sz = rblock->max_msg_sz;
209 else
210 props->max_msg_sz = 0x1 << 31;
211 props->bad_pkey_cntr = rblock->bad_pkey_cntr;
212 props->qkey_viol_cntr = rblock->qkey_viol_cntr;
213 props->pkey_tbl_len = rblock->pkey_tbl_len;
214 props->lid = rblock->lid;
215 props->sm_lid = rblock->sm_lid;
216 props->lmc = rblock->lmc;
217 props->sm_sl = rblock->sm_sl;
218 props->subnet_timeout = rblock->subnet_timeout;
219 props->init_type_reply = rblock->init_type_reply;
220 props->max_vl_num = map_number_of_vls(shca, rblock->vl_cap);
221
222 if (rblock->state && rblock->phys_width) {
223 props->phys_state = rblock->phys_pstate;
224 props->state = rblock->phys_state;
225 props->active_width = rblock->phys_width;
226 props->active_speed = rblock->phys_speed;
227 } else {
228 /* old firmware releases don't report physical
229 * port info, so use default values
230 */
231 props->phys_state = 5;
232 props->state = rblock->state;
233 props->active_width = IB_WIDTH_12X;
234 props->active_speed = 0x1;
235 }
236
237 query_port1:
238 ehca_free_fw_ctrlblock(rblock);
239
240 return ret;
241 }
242
ehca_query_sma_attr(struct ehca_shca * shca,u8 port,struct ehca_sma_attr * attr)243 int ehca_query_sma_attr(struct ehca_shca *shca,
244 u8 port, struct ehca_sma_attr *attr)
245 {
246 int ret = 0;
247 u64 h_ret;
248 struct hipz_query_port *rblock;
249
250 rblock = ehca_alloc_fw_ctrlblock(GFP_ATOMIC);
251 if (!rblock) {
252 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
253 return -ENOMEM;
254 }
255
256 h_ret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
257 if (h_ret != H_SUCCESS) {
258 ehca_err(&shca->ib_device, "Can't query port properties");
259 ret = -EINVAL;
260 goto query_sma_attr1;
261 }
262
263 memset(attr, 0, sizeof(struct ehca_sma_attr));
264
265 attr->lid = rblock->lid;
266 attr->lmc = rblock->lmc;
267 attr->sm_sl = rblock->sm_sl;
268 attr->sm_lid = rblock->sm_lid;
269
270 attr->pkey_tbl_len = rblock->pkey_tbl_len;
271 memcpy(attr->pkeys, rblock->pkey_entries, sizeof(attr->pkeys));
272
273 query_sma_attr1:
274 ehca_free_fw_ctrlblock(rblock);
275
276 return ret;
277 }
278
ehca_query_pkey(struct ib_device * ibdev,u8 port,u16 index,u16 * pkey)279 int ehca_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
280 {
281 int ret = 0;
282 u64 h_ret;
283 struct ehca_shca *shca;
284 struct hipz_query_port *rblock;
285
286 shca = container_of(ibdev, struct ehca_shca, ib_device);
287 if (index > 16) {
288 ehca_err(&shca->ib_device, "Invalid index: %x.", index);
289 return -EINVAL;
290 }
291
292 rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
293 if (!rblock) {
294 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
295 return -ENOMEM;
296 }
297
298 h_ret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
299 if (h_ret != H_SUCCESS) {
300 ehca_err(&shca->ib_device, "Can't query port properties");
301 ret = -EINVAL;
302 goto query_pkey1;
303 }
304
305 memcpy(pkey, &rblock->pkey_entries + index, sizeof(u16));
306
307 query_pkey1:
308 ehca_free_fw_ctrlblock(rblock);
309
310 return ret;
311 }
312
ehca_query_gid(struct ib_device * ibdev,u8 port,int index,union ib_gid * gid)313 int ehca_query_gid(struct ib_device *ibdev, u8 port,
314 int index, union ib_gid *gid)
315 {
316 int ret = 0;
317 u64 h_ret;
318 struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
319 ib_device);
320 struct hipz_query_port *rblock;
321
322 if (index > 255) {
323 ehca_err(&shca->ib_device, "Invalid index: %x.", index);
324 return -EINVAL;
325 }
326
327 rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
328 if (!rblock) {
329 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
330 return -ENOMEM;
331 }
332
333 h_ret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
334 if (h_ret != H_SUCCESS) {
335 ehca_err(&shca->ib_device, "Can't query port properties");
336 ret = -EINVAL;
337 goto query_gid1;
338 }
339
340 memcpy(&gid->raw[0], &rblock->gid_prefix, sizeof(u64));
341 memcpy(&gid->raw[8], &rblock->guid_entries[index], sizeof(u64));
342
343 query_gid1:
344 ehca_free_fw_ctrlblock(rblock);
345
346 return ret;
347 }
348
349 static const u32 allowed_port_caps = (
350 IB_PORT_SM | IB_PORT_LED_INFO_SUP | IB_PORT_CM_SUP |
351 IB_PORT_SNMP_TUNNEL_SUP | IB_PORT_DEVICE_MGMT_SUP |
352 IB_PORT_VENDOR_CLASS_SUP);
353
ehca_modify_port(struct ib_device * ibdev,u8 port,int port_modify_mask,struct ib_port_modify * props)354 int ehca_modify_port(struct ib_device *ibdev,
355 u8 port, int port_modify_mask,
356 struct ib_port_modify *props)
357 {
358 int ret = 0;
359 struct ehca_shca *shca;
360 struct hipz_query_port *rblock;
361 u32 cap;
362 u64 hret;
363
364 shca = container_of(ibdev, struct ehca_shca, ib_device);
365 if ((props->set_port_cap_mask | props->clr_port_cap_mask)
366 & ~allowed_port_caps) {
367 ehca_err(&shca->ib_device, "Non-changeable bits set in masks "
368 "set=%x clr=%x allowed=%x", props->set_port_cap_mask,
369 props->clr_port_cap_mask, allowed_port_caps);
370 return -EINVAL;
371 }
372
373 if (mutex_lock_interruptible(&shca->modify_mutex))
374 return -ERESTARTSYS;
375
376 rblock = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
377 if (!rblock) {
378 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
379 ret = -ENOMEM;
380 goto modify_port1;
381 }
382
383 hret = hipz_h_query_port(shca->ipz_hca_handle, port, rblock);
384 if (hret != H_SUCCESS) {
385 ehca_err(&shca->ib_device, "Can't query port properties");
386 ret = -EINVAL;
387 goto modify_port2;
388 }
389
390 cap = (rblock->capability_mask | props->set_port_cap_mask)
391 & ~props->clr_port_cap_mask;
392
393 hret = hipz_h_modify_port(shca->ipz_hca_handle, port,
394 cap, props->init_type, port_modify_mask);
395 if (hret != H_SUCCESS) {
396 ehca_err(&shca->ib_device, "Modify port failed h_ret=%lli",
397 hret);
398 ret = -EINVAL;
399 }
400
401 modify_port2:
402 ehca_free_fw_ctrlblock(rblock);
403
404 modify_port1:
405 mutex_unlock(&shca->modify_mutex);
406
407 return ret;
408 }
409