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Diffstat (limited to 'drivers/infiniband/hw/ehca/ehca_hca.c')
-rw-r--r--drivers/infiniband/hw/ehca/ehca_hca.c241
1 files changed, 241 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ehca/ehca_hca.c b/drivers/infiniband/hw/ehca/ehca_hca.c
new file mode 100644
index 000000000000..5eae6ac48425
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_hca.c
@@ -0,0 +1,241 @@
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 "hcp_if.h"
44
45int ehca_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
46{
47 int ret = 0;
48 struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
49 ib_device);
50 struct hipz_query_hca *rblock;
51
52 rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
53 if (!rblock) {
54 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
55 return -ENOMEM;
56 }
57
58 if (hipz_h_query_hca(shca->ipz_hca_handle, rblock) != H_SUCCESS) {
59 ehca_err(&shca->ib_device, "Can't query device properties");
60 ret = -EINVAL;
61 goto query_device1;
62 }
63
64 memset(props, 0, sizeof(struct ib_device_attr));
65 props->fw_ver = rblock->hw_ver;
66 props->max_mr_size = rblock->max_mr_size;
67 props->vendor_id = rblock->vendor_id >> 8;
68 props->vendor_part_id = rblock->vendor_part_id >> 16;
69 props->hw_ver = rblock->hw_ver;
70 props->max_qp = min_t(int, rblock->max_qp, INT_MAX);
71 props->max_qp_wr = min_t(int, rblock->max_wqes_wq, INT_MAX);
72 props->max_sge = min_t(int, rblock->max_sge, INT_MAX);
73 props->max_sge_rd = min_t(int, rblock->max_sge_rd, INT_MAX);
74 props->max_cq = min_t(int, rblock->max_cq, INT_MAX);
75 props->max_cqe = min_t(int, rblock->max_cqe, INT_MAX);
76 props->max_mr = min_t(int, rblock->max_mr, INT_MAX);
77 props->max_mw = min_t(int, rblock->max_mw, INT_MAX);
78 props->max_pd = min_t(int, rblock->max_pd, INT_MAX);
79 props->max_ah = min_t(int, rblock->max_ah, INT_MAX);
80 props->max_fmr = min_t(int, rblock->max_mr, INT_MAX);
81 props->max_srq = 0;
82 props->max_srq_wr = 0;
83 props->max_srq_sge = 0;
84 props->max_pkeys = 16;
85 props->local_ca_ack_delay
86 = rblock->local_ca_ack_delay;
87 props->max_raw_ipv6_qp
88 = min_t(int, rblock->max_raw_ipv6_qp, INT_MAX);
89 props->max_raw_ethy_qp
90 = min_t(int, rblock->max_raw_ethy_qp, INT_MAX);
91 props->max_mcast_grp
92 = min_t(int, rblock->max_mcast_grp, INT_MAX);
93 props->max_mcast_qp_attach
94 = min_t(int, rblock->max_mcast_qp_attach, INT_MAX);
95 props->max_total_mcast_qp_attach
96 = min_t(int, rblock->max_total_mcast_qp_attach, INT_MAX);
97
98query_device1:
99 kfree(rblock);
100
101 return ret;
102}
103
104int ehca_query_port(struct ib_device *ibdev,
105 u8 port, struct ib_port_attr *props)
106{
107 int ret = 0;
108 struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
109 ib_device);
110 struct hipz_query_port *rblock;
111
112 rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
113 if (!rblock) {
114 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
115 return -ENOMEM;
116 }
117
118 if (hipz_h_query_port(shca->ipz_hca_handle, port, rblock) != H_SUCCESS) {
119 ehca_err(&shca->ib_device, "Can't query port properties");
120 ret = -EINVAL;
121 goto query_port1;
122 }
123
124 memset(props, 0, sizeof(struct ib_port_attr));
125 props->state = rblock->state;
126
127 switch (rblock->max_mtu) {
128 case 0x1:
129 props->active_mtu = props->max_mtu = IB_MTU_256;
130 break;
131 case 0x2:
132 props->active_mtu = props->max_mtu = IB_MTU_512;
133 break;
134 case 0x3:
135 props->active_mtu = props->max_mtu = IB_MTU_1024;
136 break;
137 case 0x4:
138 props->active_mtu = props->max_mtu = IB_MTU_2048;
139 break;
140 case 0x5:
141 props->active_mtu = props->max_mtu = IB_MTU_4096;
142 break;
143 default:
144 ehca_err(&shca->ib_device, "Unknown MTU size: %x.",
145 rblock->max_mtu);
146 break;
147 }
148
149 props->gid_tbl_len = rblock->gid_tbl_len;
150 props->max_msg_sz = rblock->max_msg_sz;
151 props->bad_pkey_cntr = rblock->bad_pkey_cntr;
152 props->qkey_viol_cntr = rblock->qkey_viol_cntr;
153 props->pkey_tbl_len = rblock->pkey_tbl_len;
154 props->lid = rblock->lid;
155 props->sm_lid = rblock->sm_lid;
156 props->lmc = rblock->lmc;
157 props->sm_sl = rblock->sm_sl;
158 props->subnet_timeout = rblock->subnet_timeout;
159 props->init_type_reply = rblock->init_type_reply;
160
161 props->active_width = IB_WIDTH_12X;
162 props->active_speed = 0x1;
163
164query_port1:
165 kfree(rblock);
166
167 return ret;
168}
169
170int ehca_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
171{
172 int ret = 0;
173 struct ehca_shca *shca = container_of(ibdev, struct ehca_shca, ib_device);
174 struct hipz_query_port *rblock;
175
176 if (index > 16) {
177 ehca_err(&shca->ib_device, "Invalid index: %x.", index);
178 return -EINVAL;
179 }
180
181 rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
182 if (!rblock) {
183 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
184 return -ENOMEM;
185 }
186
187 if (hipz_h_query_port(shca->ipz_hca_handle, port, rblock) != H_SUCCESS) {
188 ehca_err(&shca->ib_device, "Can't query port properties");
189 ret = -EINVAL;
190 goto query_pkey1;
191 }
192
193 memcpy(pkey, &rblock->pkey_entries + index, sizeof(u16));
194
195query_pkey1:
196 kfree(rblock);
197
198 return ret;
199}
200
201int ehca_query_gid(struct ib_device *ibdev, u8 port,
202 int index, union ib_gid *gid)
203{
204 int ret = 0;
205 struct ehca_shca *shca = container_of(ibdev, struct ehca_shca,
206 ib_device);
207 struct hipz_query_port *rblock;
208
209 if (index > 255) {
210 ehca_err(&shca->ib_device, "Invalid index: %x.", index);
211 return -EINVAL;
212 }
213
214 rblock = kzalloc(H_CB_ALIGNMENT, GFP_KERNEL);
215 if (!rblock) {
216 ehca_err(&shca->ib_device, "Can't allocate rblock memory.");
217 return -ENOMEM;
218 }
219
220 if (hipz_h_query_port(shca->ipz_hca_handle, port, rblock) != H_SUCCESS) {
221 ehca_err(&shca->ib_device, "Can't query port properties");
222 ret = -EINVAL;
223 goto query_gid1;
224 }
225
226 memcpy(&gid->raw[0], &rblock->gid_prefix, sizeof(u64));
227 memcpy(&gid->raw[8], &rblock->guid_entries[index], sizeof(u64));
228
229query_gid1:
230 kfree(rblock);
231
232 return ret;
233}
234
235int ehca_modify_port(struct ib_device *ibdev,
236 u8 port, int port_modify_mask,
237 struct ib_port_modify *props)
238{
239 /* Not implemented yet */
240 return -EFAULT;
241}
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-04 02:08:29 -0500