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Committer: Michael Beasley <mike@snafu.setup>
[mikesnafu-overlay.git] / drivers / net / mlx4 / fw.c
blob61dc4951d6b0a61b2e1af9e535d0c14384c79e8e
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
40 enum {
41 MLX4_COMMAND_INTERFACE_MIN_REV = 2,
42 MLX4_COMMAND_INTERFACE_MAX_REV = 3,
43 MLX4_COMMAND_INTERFACE_NEW_PORT_CMDS = 3,
44 };
45
46 extern void __buggy_use_of_MLX4_GET(void);
47 extern void __buggy_use_of_MLX4_PUT(void);
48
49 #define MLX4_GET(dest, source, offset) \
50 do { \
51 void *__p = (char *) (source) + (offset); \
52 switch (sizeof (dest)) { \
53 case 1: (dest) = *(u8 *) __p; break; \
54 case 2: (dest) = be16_to_cpup(__p); break; \
55 case 4: (dest) = be32_to_cpup(__p); break; \
56 case 8: (dest) = be64_to_cpup(__p); break; \
57 default: __buggy_use_of_MLX4_GET(); \
58 } \
59 } while (0)
60
61 #define MLX4_PUT(dest, source, offset) \
62 do { \
63 void *__d = ((char *) (dest) + (offset)); \
64 switch (sizeof(source)) { \
65 case 1: *(u8 *) __d = (source); break; \
66 case 2: *(__be16 *) __d = cpu_to_be16(source); break; \
67 case 4: *(__be32 *) __d = cpu_to_be32(source); break; \
68 case 8: *(__be64 *) __d = cpu_to_be64(source); break; \
69 default: __buggy_use_of_MLX4_PUT(); \
70 } \
71 } while (0)
72
73 static void dump_dev_cap_flags(struct mlx4_dev *dev, u32 flags)
74 {
75 static const char *fname[] = {
76 [ 0] = "RC transport",
77 [ 1] = "UC transport",
78 [ 2] = "UD transport",
79 [ 3] = "XRC transport",
80 [ 4] = "reliable multicast",
81 [ 5] = "FCoIB support",
82 [ 6] = "SRQ support",
83 [ 7] = "IPoIB checksum offload",
84 [ 8] = "P_Key violation counter",
85 [ 9] = "Q_Key violation counter",
86 [10] = "VMM",
87 [16] = "MW support",
88 [17] = "APM support",
89 [18] = "Atomic ops support",
90 [19] = "Raw multicast support",
91 [20] = "Address vector port checking support",
92 [21] = "UD multicast support",
93 [24] = "Demand paging support",
94 [25] = "Router support"
95 };
96 int i;
97
98 mlx4_dbg(dev, "DEV_CAP flags:\n");
99 for (i = 0; i < ARRAY_SIZE(fname); ++i)
100 if (fname[i] && (flags & (1 << i)))
101 mlx4_dbg(dev, " %s\n", fname[i]);
102 }
103
104 int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
105 {
106 struct mlx4_cmd_mailbox *mailbox;
107 u32 *outbox;
108 u8 field;
109 u16 size;
110 u16 stat_rate;
111 int err;
112 int i;
113
114 #define QUERY_DEV_CAP_OUT_SIZE 0x100
115 #define QUERY_DEV_CAP_MAX_SRQ_SZ_OFFSET 0x10
116 #define QUERY_DEV_CAP_MAX_QP_SZ_OFFSET 0x11
117 #define QUERY_DEV_CAP_RSVD_QP_OFFSET 0x12
118 #define QUERY_DEV_CAP_MAX_QP_OFFSET 0x13
119 #define QUERY_DEV_CAP_RSVD_SRQ_OFFSET 0x14
120 #define QUERY_DEV_CAP_MAX_SRQ_OFFSET 0x15
121 #define QUERY_DEV_CAP_RSVD_EEC_OFFSET 0x16
122 #define QUERY_DEV_CAP_MAX_EEC_OFFSET 0x17
123 #define QUERY_DEV_CAP_MAX_CQ_SZ_OFFSET 0x19
124 #define QUERY_DEV_CAP_RSVD_CQ_OFFSET 0x1a
125 #define QUERY_DEV_CAP_MAX_CQ_OFFSET 0x1b
126 #define QUERY_DEV_CAP_MAX_MPT_OFFSET 0x1d
127 #define QUERY_DEV_CAP_RSVD_EQ_OFFSET 0x1e
128 #define QUERY_DEV_CAP_MAX_EQ_OFFSET 0x1f
129 #define QUERY_DEV_CAP_RSVD_MTT_OFFSET 0x20
130 #define QUERY_DEV_CAP_MAX_MRW_SZ_OFFSET 0x21
131 #define QUERY_DEV_CAP_RSVD_MRW_OFFSET 0x22
132 #define QUERY_DEV_CAP_MAX_MTT_SEG_OFFSET 0x23
133 #define QUERY_DEV_CAP_MAX_AV_OFFSET 0x27
134 #define QUERY_DEV_CAP_MAX_REQ_QP_OFFSET 0x29
135 #define QUERY_DEV_CAP_MAX_RES_QP_OFFSET 0x2b
136 #define QUERY_DEV_CAP_MAX_RDMA_OFFSET 0x2f
137 #define QUERY_DEV_CAP_RSZ_SRQ_OFFSET 0x33
138 #define QUERY_DEV_CAP_ACK_DELAY_OFFSET 0x35
139 #define QUERY_DEV_CAP_MTU_WIDTH_OFFSET 0x36
140 #define QUERY_DEV_CAP_VL_PORT_OFFSET 0x37
141 #define QUERY_DEV_CAP_MAX_MSG_SZ_OFFSET 0x38
142 #define QUERY_DEV_CAP_MAX_GID_OFFSET 0x3b
143 #define QUERY_DEV_CAP_RATE_SUPPORT_OFFSET 0x3c
144 #define QUERY_DEV_CAP_MAX_PKEY_OFFSET 0x3f
145 #define QUERY_DEV_CAP_FLAGS_OFFSET 0x44
146 #define QUERY_DEV_CAP_RSVD_UAR_OFFSET 0x48
147 #define QUERY_DEV_CAP_UAR_SZ_OFFSET 0x49
148 #define QUERY_DEV_CAP_PAGE_SZ_OFFSET 0x4b
149 #define QUERY_DEV_CAP_BF_OFFSET 0x4c
150 #define QUERY_DEV_CAP_LOG_BF_REG_SZ_OFFSET 0x4d
151 #define QUERY_DEV_CAP_LOG_MAX_BF_REGS_PER_PAGE_OFFSET 0x4e
152 #define QUERY_DEV_CAP_LOG_MAX_BF_PAGES_OFFSET 0x4f
153 #define QUERY_DEV_CAP_MAX_SG_SQ_OFFSET 0x51
154 #define QUERY_DEV_CAP_MAX_DESC_SZ_SQ_OFFSET 0x52
155 #define QUERY_DEV_CAP_MAX_SG_RQ_OFFSET 0x55
156 #define QUERY_DEV_CAP_MAX_DESC_SZ_RQ_OFFSET 0x56
157 #define QUERY_DEV_CAP_MAX_QP_MCG_OFFSET 0x61
158 #define QUERY_DEV_CAP_RSVD_MCG_OFFSET 0x62
159 #define QUERY_DEV_CAP_MAX_MCG_OFFSET 0x63
160 #define QUERY_DEV_CAP_RSVD_PD_OFFSET 0x64
161 #define QUERY_DEV_CAP_MAX_PD_OFFSET 0x65
162 #define QUERY_DEV_CAP_RDMARC_ENTRY_SZ_OFFSET 0x80
163 #define QUERY_DEV_CAP_QPC_ENTRY_SZ_OFFSET 0x82
164 #define QUERY_DEV_CAP_AUX_ENTRY_SZ_OFFSET 0x84
165 #define QUERY_DEV_CAP_ALTC_ENTRY_SZ_OFFSET 0x86
166 #define QUERY_DEV_CAP_EQC_ENTRY_SZ_OFFSET 0x88
167 #define QUERY_DEV_CAP_CQC_ENTRY_SZ_OFFSET 0x8a
168 #define QUERY_DEV_CAP_SRQ_ENTRY_SZ_OFFSET 0x8c
169 #define QUERY_DEV_CAP_C_MPT_ENTRY_SZ_OFFSET 0x8e
170 #define QUERY_DEV_CAP_MTT_ENTRY_SZ_OFFSET 0x90
171 #define QUERY_DEV_CAP_D_MPT_ENTRY_SZ_OFFSET 0x92
172 #define QUERY_DEV_CAP_BMME_FLAGS_OFFSET 0x97
173 #define QUERY_DEV_CAP_RSVD_LKEY_OFFSET 0x98
174 #define QUERY_DEV_CAP_MAX_ICM_SZ_OFFSET 0xa0
175
176 mailbox = mlx4_alloc_cmd_mailbox(dev);
177 if (IS_ERR(mailbox))
178 return PTR_ERR(mailbox);
179 outbox = mailbox->buf;
180
181 err = mlx4_cmd_box(dev, 0, mailbox->dma, 0, 0, MLX4_CMD_QUERY_DEV_CAP,
182 MLX4_CMD_TIME_CLASS_A);
183 if (err)
184 goto out;
185
186 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_QP_OFFSET);
187 dev_cap->reserved_qps = 1 << (field & 0xf);
188 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_QP_OFFSET);
189 dev_cap->max_qps = 1 << (field & 0x1f);
190 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_SRQ_OFFSET);
191 dev_cap->reserved_srqs = 1 << (field >> 4);
192 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_SRQ_OFFSET);
193 dev_cap->max_srqs = 1 << (field & 0x1f);
194 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_CQ_SZ_OFFSET);
195 dev_cap->max_cq_sz = 1 << field;
196 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_CQ_OFFSET);
197 dev_cap->reserved_cqs = 1 << (field & 0xf);
198 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_CQ_OFFSET);
199 dev_cap->max_cqs = 1 << (field & 0x1f);
200 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_MPT_OFFSET);
201 dev_cap->max_mpts = 1 << (field & 0x3f);
202 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_EQ_OFFSET);
203 dev_cap->reserved_eqs = 1 << (field & 0xf);
204 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_EQ_OFFSET);
205 dev_cap->max_eqs = 1 << (field & 0xf);
206 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_MTT_OFFSET);
207 dev_cap->reserved_mtts = 1 << (field >> 4);
208 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_MRW_SZ_OFFSET);
209 dev_cap->max_mrw_sz = 1 << field;
210 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_MRW_OFFSET);
211 dev_cap->reserved_mrws = 1 << (field & 0xf);
212 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_MTT_SEG_OFFSET);
213 dev_cap->max_mtt_seg = 1 << (field & 0x3f);
214 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_REQ_QP_OFFSET);
215 dev_cap->max_requester_per_qp = 1 << (field & 0x3f);
216 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_RES_QP_OFFSET);
217 dev_cap->max_responder_per_qp = 1 << (field & 0x3f);
218 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_RDMA_OFFSET);
219 dev_cap->max_rdma_global = 1 << (field & 0x3f);
220 MLX4_GET(field, outbox, QUERY_DEV_CAP_ACK_DELAY_OFFSET);
221 dev_cap->local_ca_ack_delay = field & 0x1f;
222 MLX4_GET(field, outbox, QUERY_DEV_CAP_VL_PORT_OFFSET);
223 dev_cap->num_ports = field & 0xf;
224 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_MSG_SZ_OFFSET);
225 dev_cap->max_msg_sz = 1 << (field & 0x1f);
226 MLX4_GET(stat_rate, outbox, QUERY_DEV_CAP_RATE_SUPPORT_OFFSET);
227 dev_cap->stat_rate_support = stat_rate;
228 MLX4_GET(dev_cap->flags, outbox, QUERY_DEV_CAP_FLAGS_OFFSET);
229 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_UAR_OFFSET);
230 dev_cap->reserved_uars = field >> 4;
231 MLX4_GET(field, outbox, QUERY_DEV_CAP_UAR_SZ_OFFSET);
232 dev_cap->uar_size = 1 << ((field & 0x3f) + 20);
233 MLX4_GET(field, outbox, QUERY_DEV_CAP_PAGE_SZ_OFFSET);
234 dev_cap->min_page_sz = 1 << field;
235
236 MLX4_GET(field, outbox, QUERY_DEV_CAP_BF_OFFSET);
237 if (field & 0x80) {
238 MLX4_GET(field, outbox, QUERY_DEV_CAP_LOG_BF_REG_SZ_OFFSET);
239 dev_cap->bf_reg_size = 1 << (field & 0x1f);
240 MLX4_GET(field, outbox, QUERY_DEV_CAP_LOG_MAX_BF_REGS_PER_PAGE_OFFSET);
241 dev_cap->bf_regs_per_page = 1 << (field & 0x3f);
242 mlx4_dbg(dev, "BlueFlame available (reg size %d, regs/page %d)\n",
243 dev_cap->bf_reg_size, dev_cap->bf_regs_per_page);
244 } else {
245 dev_cap->bf_reg_size = 0;
246 mlx4_dbg(dev, "BlueFlame not available\n");
247 }
248
249 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_SG_SQ_OFFSET);
250 dev_cap->max_sq_sg = field;
251 MLX4_GET(size, outbox, QUERY_DEV_CAP_MAX_DESC_SZ_SQ_OFFSET);
252 dev_cap->max_sq_desc_sz = size;
253
254 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_QP_MCG_OFFSET);
255 dev_cap->max_qp_per_mcg = 1 << field;
256 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_MCG_OFFSET);
257 dev_cap->reserved_mgms = field & 0xf;
258 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_MCG_OFFSET);
259 dev_cap->max_mcgs = 1 << field;
260 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_PD_OFFSET);
261 dev_cap->reserved_pds = field >> 4;
262 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_PD_OFFSET);
263 dev_cap->max_pds = 1 << (field & 0x3f);
264
265 MLX4_GET(size, outbox, QUERY_DEV_CAP_RDMARC_ENTRY_SZ_OFFSET);
266 dev_cap->rdmarc_entry_sz = size;
267 MLX4_GET(size, outbox, QUERY_DEV_CAP_QPC_ENTRY_SZ_OFFSET);
268 dev_cap->qpc_entry_sz = size;
269 MLX4_GET(size, outbox, QUERY_DEV_CAP_AUX_ENTRY_SZ_OFFSET);
270 dev_cap->aux_entry_sz = size;
271 MLX4_GET(size, outbox, QUERY_DEV_CAP_ALTC_ENTRY_SZ_OFFSET);
272 dev_cap->altc_entry_sz = size;
273 MLX4_GET(size, outbox, QUERY_DEV_CAP_EQC_ENTRY_SZ_OFFSET);
274 dev_cap->eqc_entry_sz = size;
275 MLX4_GET(size, outbox, QUERY_DEV_CAP_CQC_ENTRY_SZ_OFFSET);
276 dev_cap->cqc_entry_sz = size;
277 MLX4_GET(size, outbox, QUERY_DEV_CAP_SRQ_ENTRY_SZ_OFFSET);
278 dev_cap->srq_entry_sz = size;
279 MLX4_GET(size, outbox, QUERY_DEV_CAP_C_MPT_ENTRY_SZ_OFFSET);
280 dev_cap->cmpt_entry_sz = size;
281 MLX4_GET(size, outbox, QUERY_DEV_CAP_MTT_ENTRY_SZ_OFFSET);
282 dev_cap->mtt_entry_sz = size;
283 MLX4_GET(size, outbox, QUERY_DEV_CAP_D_MPT_ENTRY_SZ_OFFSET);
284 dev_cap->dmpt_entry_sz = size;
285
286 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_SRQ_SZ_OFFSET);
287 dev_cap->max_srq_sz = 1 << field;
288 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_QP_SZ_OFFSET);
289 dev_cap->max_qp_sz = 1 << field;
290 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSZ_SRQ_OFFSET);
291 dev_cap->resize_srq = field & 1;
292 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_SG_RQ_OFFSET);
293 dev_cap->max_rq_sg = field;
294 MLX4_GET(size, outbox, QUERY_DEV_CAP_MAX_DESC_SZ_RQ_OFFSET);
295 dev_cap->max_rq_desc_sz = size;
296
297 MLX4_GET(dev_cap->bmme_flags, outbox,
298 QUERY_DEV_CAP_BMME_FLAGS_OFFSET);
299 MLX4_GET(dev_cap->reserved_lkey, outbox,
300 QUERY_DEV_CAP_RSVD_LKEY_OFFSET);
301 MLX4_GET(dev_cap->max_icm_sz, outbox,
302 QUERY_DEV_CAP_MAX_ICM_SZ_OFFSET);
303
304 if (dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
305 for (i = 1; i <= dev_cap->num_ports; ++i) {
306 MLX4_GET(field, outbox, QUERY_DEV_CAP_VL_PORT_OFFSET);
307 dev_cap->max_vl[i] = field >> 4;
308 MLX4_GET(field, outbox, QUERY_DEV_CAP_MTU_WIDTH_OFFSET);
309 dev_cap->max_mtu[i] = field >> 4;
310 dev_cap->max_port_width[i] = field & 0xf;
311 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_GID_OFFSET);
312 dev_cap->max_gids[i] = 1 << (field & 0xf);
313 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_PKEY_OFFSET);
314 dev_cap->max_pkeys[i] = 1 << (field & 0xf);
315 }
316 } else {
317 #define QUERY_PORT_MTU_OFFSET 0x01
318 #define QUERY_PORT_WIDTH_OFFSET 0x06
319 #define QUERY_PORT_MAX_GID_PKEY_OFFSET 0x07
320 #define QUERY_PORT_MAX_VL_OFFSET 0x0b
321
322 for (i = 1; i <= dev_cap->num_ports; ++i) {
323 err = mlx4_cmd_box(dev, 0, mailbox->dma, i, 0, MLX4_CMD_QUERY_PORT,
324 MLX4_CMD_TIME_CLASS_B);
325 if (err)
326 goto out;
327
328 MLX4_GET(field, outbox, QUERY_PORT_MTU_OFFSET);
329 dev_cap->max_mtu[i] = field & 0xf;
330 MLX4_GET(field, outbox, QUERY_PORT_WIDTH_OFFSET);
331 dev_cap->max_port_width[i] = field & 0xf;
332 MLX4_GET(field, outbox, QUERY_PORT_MAX_GID_PKEY_OFFSET);
333 dev_cap->max_gids[i] = 1 << (field >> 4);
334 dev_cap->max_pkeys[i] = 1 << (field & 0xf);
335 MLX4_GET(field, outbox, QUERY_PORT_MAX_VL_OFFSET);
336 dev_cap->max_vl[i] = field & 0xf;
337 }
338 }
339
340 if (dev_cap->bmme_flags & 1)
341 mlx4_dbg(dev, "Base MM extensions: yes "
342 "(flags %d, rsvd L_Key %08x)\n",
343 dev_cap->bmme_flags, dev_cap->reserved_lkey);
344 else
345 mlx4_dbg(dev, "Base MM extensions: no\n");
346
347 /*
348 * Each UAR has 4 EQ doorbells; so if a UAR is reserved, then
349 * we can't use any EQs whose doorbell falls on that page,
350 * even if the EQ itself isn't reserved.
351 */
352 dev_cap->reserved_eqs = max(dev_cap->reserved_uars * 4,
353 dev_cap->reserved_eqs);
354
355 mlx4_dbg(dev, "Max ICM size %lld MB\n",
356 (unsigned long long) dev_cap->max_icm_sz >> 20);
357 mlx4_dbg(dev, "Max QPs: %d, reserved QPs: %d, entry size: %d\n",
358 dev_cap->max_qps, dev_cap->reserved_qps, dev_cap->qpc_entry_sz);
359 mlx4_dbg(dev, "Max SRQs: %d, reserved SRQs: %d, entry size: %d\n",
360 dev_cap->max_srqs, dev_cap->reserved_srqs, dev_cap->srq_entry_sz);
361 mlx4_dbg(dev, "Max CQs: %d, reserved CQs: %d, entry size: %d\n",
362 dev_cap->max_cqs, dev_cap->reserved_cqs, dev_cap->cqc_entry_sz);
363 mlx4_dbg(dev, "Max EQs: %d, reserved EQs: %d, entry size: %d\n",
364 dev_cap->max_eqs, dev_cap->reserved_eqs, dev_cap->eqc_entry_sz);
365 mlx4_dbg(dev, "reserved MPTs: %d, reserved MTTs: %d\n",
366 dev_cap->reserved_mrws, dev_cap->reserved_mtts);
367 mlx4_dbg(dev, "Max PDs: %d, reserved PDs: %d, reserved UARs: %d\n",
368 dev_cap->max_pds, dev_cap->reserved_pds, dev_cap->reserved_uars);
369 mlx4_dbg(dev, "Max QP/MCG: %d, reserved MGMs: %d\n",
370 dev_cap->max_pds, dev_cap->reserved_mgms);
371 mlx4_dbg(dev, "Max CQEs: %d, max WQEs: %d, max SRQ WQEs: %d\n",
372 dev_cap->max_cq_sz, dev_cap->max_qp_sz, dev_cap->max_srq_sz);
373 mlx4_dbg(dev, "Local CA ACK delay: %d, max MTU: %d, port width cap: %d\n",
374 dev_cap->local_ca_ack_delay, 128 << dev_cap->max_mtu[1],
375 dev_cap->max_port_width[1]);
376 mlx4_dbg(dev, "Max SQ desc size: %d, max SQ S/G: %d\n",
377 dev_cap->max_sq_desc_sz, dev_cap->max_sq_sg);
378 mlx4_dbg(dev, "Max RQ desc size: %d, max RQ S/G: %d\n",
379 dev_cap->max_rq_desc_sz, dev_cap->max_rq_sg);
380
381 dump_dev_cap_flags(dev, dev_cap->flags);
382
383 out:
384 mlx4_free_cmd_mailbox(dev, mailbox);
385 return err;
386 }
387
388 int mlx4_map_cmd(struct mlx4_dev *dev, u16 op, struct mlx4_icm *icm, u64 virt)
389 {
390 struct mlx4_cmd_mailbox *mailbox;
391 struct mlx4_icm_iter iter;
392 __be64 *pages;
393 int lg;
394 int nent = 0;
395 int i;
396 int err = 0;
397 int ts = 0, tc = 0;
398
399 mailbox = mlx4_alloc_cmd_mailbox(dev);
400 if (IS_ERR(mailbox))
401 return PTR_ERR(mailbox);
402 memset(mailbox->buf, 0, MLX4_MAILBOX_SIZE);
403 pages = mailbox->buf;
404
405 for (mlx4_icm_first(icm, &iter);
406 !mlx4_icm_last(&iter);
407 mlx4_icm_next(&iter)) {
408 /*
409 * We have to pass pages that are aligned to their
410 * size, so find the least significant 1 in the
411 * address or size and use that as our log2 size.
412 */
413 lg = ffs(mlx4_icm_addr(&iter) | mlx4_icm_size(&iter)) - 1;
414 if (lg < MLX4_ICM_PAGE_SHIFT) {
415 mlx4_warn(dev, "Got FW area not aligned to %d (%llx/%lx).\n",
416 MLX4_ICM_PAGE_SIZE,
417 (unsigned long long) mlx4_icm_addr(&iter),
418 mlx4_icm_size(&iter));
419 err = -EINVAL;
420 goto out;
421 }
422
423 for (i = 0; i < mlx4_icm_size(&iter) >> lg; ++i) {
424 if (virt != -1) {
425 pages[nent * 2] = cpu_to_be64(virt);
426 virt += 1 << lg;
427 }
428
429 pages[nent * 2 + 1] =
430 cpu_to_be64((mlx4_icm_addr(&iter) + (i << lg)) |
431 (lg - MLX4_ICM_PAGE_SHIFT));
432 ts += 1 << (lg - 10);
433 ++tc;
434
435 if (++nent == MLX4_MAILBOX_SIZE / 16) {
436 err = mlx4_cmd(dev, mailbox->dma, nent, 0, op,
437 MLX4_CMD_TIME_CLASS_B);
438 if (err)
439 goto out;
440 nent = 0;
441 }
442 }
443 }
444
445 if (nent)
446 err = mlx4_cmd(dev, mailbox->dma, nent, 0, op, MLX4_CMD_TIME_CLASS_B);
447 if (err)
448 goto out;
449
450 switch (op) {
451 case MLX4_CMD_MAP_FA:
452 mlx4_dbg(dev, "Mapped %d chunks/%d KB for FW.\n", tc, ts);
453 break;
454 case MLX4_CMD_MAP_ICM_AUX:
455 mlx4_dbg(dev, "Mapped %d chunks/%d KB for ICM aux.\n", tc, ts);
456 break;
457 case MLX4_CMD_MAP_ICM:
458 mlx4_dbg(dev, "Mapped %d chunks/%d KB at %llx for ICM.\n",
459 tc, ts, (unsigned long long) virt - (ts << 10));
460 break;
461 }
462
463 out:
464 mlx4_free_cmd_mailbox(dev, mailbox);
465 return err;
466 }
467
468 int mlx4_MAP_FA(struct mlx4_dev *dev, struct mlx4_icm *icm)
469 {
470 return mlx4_map_cmd(dev, MLX4_CMD_MAP_FA, icm, -1);
471 }
472
473 int mlx4_UNMAP_FA(struct mlx4_dev *dev)
474 {
475 return mlx4_cmd(dev, 0, 0, 0, MLX4_CMD_UNMAP_FA, MLX4_CMD_TIME_CLASS_B);
476 }
477
478
479 int mlx4_RUN_FW(struct mlx4_dev *dev)
480 {
481 return mlx4_cmd(dev, 0, 0, 0, MLX4_CMD_RUN_FW, MLX4_CMD_TIME_CLASS_A);
482 }
483
484 int mlx4_QUERY_FW(struct mlx4_dev *dev)
485 {
486 struct mlx4_fw *fw = &mlx4_priv(dev)->fw;
487 struct mlx4_cmd *cmd = &mlx4_priv(dev)->cmd;
488 struct mlx4_cmd_mailbox *mailbox;
489 u32 *outbox;
490 int err = 0;
491 u64 fw_ver;
492 u16 cmd_if_rev;
493 u8 lg;
494
495 #define QUERY_FW_OUT_SIZE 0x100
496 #define QUERY_FW_VER_OFFSET 0x00
497 #define QUERY_FW_CMD_IF_REV_OFFSET 0x0a
498 #define QUERY_FW_MAX_CMD_OFFSET 0x0f
499 #define QUERY_FW_ERR_START_OFFSET 0x30
500 #define QUERY_FW_ERR_SIZE_OFFSET 0x38
501 #define QUERY_FW_ERR_BAR_OFFSET 0x3c
502
503 #define QUERY_FW_SIZE_OFFSET 0x00
504 #define QUERY_FW_CLR_INT_BASE_OFFSET 0x20
505 #define QUERY_FW_CLR_INT_BAR_OFFSET 0x28
506
507 mailbox = mlx4_alloc_cmd_mailbox(dev);
508 if (IS_ERR(mailbox))
509 return PTR_ERR(mailbox);
510 outbox = mailbox->buf;
511
512 err = mlx4_cmd_box(dev, 0, mailbox->dma, 0, 0, MLX4_CMD_QUERY_FW,
513 MLX4_CMD_TIME_CLASS_A);
514 if (err)
515 goto out;
516
517 MLX4_GET(fw_ver, outbox, QUERY_FW_VER_OFFSET);
518 /*
519 * FW subminor version is at more significant bits than minor
520 * version, so swap here.
521 */
522 dev->caps.fw_ver = (fw_ver & 0xffff00000000ull) |
523 ((fw_ver & 0xffff0000ull) >> 16) |
524 ((fw_ver & 0x0000ffffull) << 16);
525
526 MLX4_GET(cmd_if_rev, outbox, QUERY_FW_CMD_IF_REV_OFFSET);
527 if (cmd_if_rev < MLX4_COMMAND_INTERFACE_MIN_REV ||
528 cmd_if_rev > MLX4_COMMAND_INTERFACE_MAX_REV) {
529 mlx4_err(dev, "Installed FW has unsupported "
530 "command interface revision %d.\n",
531 cmd_if_rev);
532 mlx4_err(dev, "(Installed FW version is %d.%d.%03d)\n",
533 (int) (dev->caps.fw_ver >> 32),
534 (int) (dev->caps.fw_ver >> 16) & 0xffff,
535 (int) dev->caps.fw_ver & 0xffff);
536 mlx4_err(dev, "This driver version supports only revisions %d to %d.\n",
537 MLX4_COMMAND_INTERFACE_MIN_REV, MLX4_COMMAND_INTERFACE_MAX_REV);
538 err = -ENODEV;
539 goto out;
540 }
541
542 if (cmd_if_rev < MLX4_COMMAND_INTERFACE_NEW_PORT_CMDS)
543 dev->flags |= MLX4_FLAG_OLD_PORT_CMDS;
544
545 MLX4_GET(lg, outbox, QUERY_FW_MAX_CMD_OFFSET);
546 cmd->max_cmds = 1 << lg;
547
548 mlx4_dbg(dev, "FW version %d.%d.%03d (cmd intf rev %d), max commands %d\n",
549 (int) (dev->caps.fw_ver >> 32),
550 (int) (dev->caps.fw_ver >> 16) & 0xffff,
551 (int) dev->caps.fw_ver & 0xffff,
552 cmd_if_rev, cmd->max_cmds);
553
554 MLX4_GET(fw->catas_offset, outbox, QUERY_FW_ERR_START_OFFSET);
555 MLX4_GET(fw->catas_size, outbox, QUERY_FW_ERR_SIZE_OFFSET);
556 MLX4_GET(fw->catas_bar, outbox, QUERY_FW_ERR_BAR_OFFSET);
557 fw->catas_bar = (fw->catas_bar >> 6) * 2;
558
559 mlx4_dbg(dev, "Catastrophic error buffer at 0x%llx, size 0x%x, BAR %d\n",
560 (unsigned long long) fw->catas_offset, fw->catas_size, fw->catas_bar);
561
562 MLX4_GET(fw->fw_pages, outbox, QUERY_FW_SIZE_OFFSET);
563 MLX4_GET(fw->clr_int_base, outbox, QUERY_FW_CLR_INT_BASE_OFFSET);
564 MLX4_GET(fw->clr_int_bar, outbox, QUERY_FW_CLR_INT_BAR_OFFSET);
565 fw->clr_int_bar = (fw->clr_int_bar >> 6) * 2;
566
567 mlx4_dbg(dev, "FW size %d KB\n", fw->fw_pages >> 2);
568
569 /*
570 * Round up number of system pages needed in case
571 * MLX4_ICM_PAGE_SIZE < PAGE_SIZE.
572 */
573 fw->fw_pages =
574 ALIGN(fw->fw_pages, PAGE_SIZE / MLX4_ICM_PAGE_SIZE) >>
575 (PAGE_SHIFT - MLX4_ICM_PAGE_SHIFT);
576
577 mlx4_dbg(dev, "Clear int @ %llx, BAR %d\n",
578 (unsigned long long) fw->clr_int_base, fw->clr_int_bar);
579
580 out:
581 mlx4_free_cmd_mailbox(dev, mailbox);
582 return err;
583 }
584
585 static void get_board_id(void *vsd, char *board_id)
586 {
587 int i;
588
589 #define VSD_OFFSET_SIG1 0x00
590 #define VSD_OFFSET_SIG2 0xde
591 #define VSD_OFFSET_MLX_BOARD_ID 0xd0
592 #define VSD_OFFSET_TS_BOARD_ID 0x20
593
594 #define VSD_SIGNATURE_TOPSPIN 0x5ad
595
596 memset(board_id, 0, MLX4_BOARD_ID_LEN);
597
598 if (be16_to_cpup(vsd + VSD_OFFSET_SIG1) == VSD_SIGNATURE_TOPSPIN &&
599 be16_to_cpup(vsd + VSD_OFFSET_SIG2) == VSD_SIGNATURE_TOPSPIN) {
600 strlcpy(board_id, vsd + VSD_OFFSET_TS_BOARD_ID, MLX4_BOARD_ID_LEN);
601 } else {
602 /*
603 * The board ID is a string but the firmware byte
604 * swaps each 4-byte word before passing it back to
605 * us. Therefore we need to swab it before printing.
606 */
607 for (i = 0; i < 4; ++i)
608 ((u32 *) board_id)[i] =
609 swab32(*(u32 *) (vsd + VSD_OFFSET_MLX_BOARD_ID + i * 4));
610 }
611 }
612
613 int mlx4_QUERY_ADAPTER(struct mlx4_dev *dev, struct mlx4_adapter *adapter)
614 {
615 struct mlx4_cmd_mailbox *mailbox;
616 u32 *outbox;
617 int err;
618
619 #define QUERY_ADAPTER_OUT_SIZE 0x100
620 #define QUERY_ADAPTER_INTA_PIN_OFFSET 0x10
621 #define QUERY_ADAPTER_VSD_OFFSET 0x20
622
623 mailbox = mlx4_alloc_cmd_mailbox(dev);
624 if (IS_ERR(mailbox))
625 return PTR_ERR(mailbox);
626 outbox = mailbox->buf;
627
628 err = mlx4_cmd_box(dev, 0, mailbox->dma, 0, 0, MLX4_CMD_QUERY_ADAPTER,
629 MLX4_CMD_TIME_CLASS_A);
630 if (err)
631 goto out;
632
633 MLX4_GET(adapter->inta_pin, outbox, QUERY_ADAPTER_INTA_PIN_OFFSET);
634
635 get_board_id(outbox + QUERY_ADAPTER_VSD_OFFSET / 4,
636 adapter->board_id);
637
638 out:
639 mlx4_free_cmd_mailbox(dev, mailbox);
640 return err;
641 }
642
643 int mlx4_INIT_HCA(struct mlx4_dev *dev, struct mlx4_init_hca_param *param)
644 {
645 struct mlx4_cmd_mailbox *mailbox;
646 __be32 *inbox;
647 int err;
648
649 #define INIT_HCA_IN_SIZE 0x200
650 #define INIT_HCA_VERSION_OFFSET 0x000
651 #define INIT_HCA_VERSION 2
652 #define INIT_HCA_FLAGS_OFFSET 0x014
653 #define INIT_HCA_QPC_OFFSET 0x020
654 #define INIT_HCA_QPC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x10)
655 #define INIT_HCA_LOG_QP_OFFSET (INIT_HCA_QPC_OFFSET + 0x17)
656 #define INIT_HCA_SRQC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x28)
657 #define INIT_HCA_LOG_SRQ_OFFSET (INIT_HCA_QPC_OFFSET + 0x2f)
658 #define INIT_HCA_CQC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x30)
659 #define INIT_HCA_LOG_CQ_OFFSET (INIT_HCA_QPC_OFFSET + 0x37)
660 #define INIT_HCA_ALTC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x40)
661 #define INIT_HCA_AUXC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x50)
662 #define INIT_HCA_EQC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x60)
663 #define INIT_HCA_LOG_EQ_OFFSET (INIT_HCA_QPC_OFFSET + 0x67)
664 #define INIT_HCA_RDMARC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x70)
665 #define INIT_HCA_LOG_RD_OFFSET (INIT_HCA_QPC_OFFSET + 0x77)
666 #define INIT_HCA_MCAST_OFFSET 0x0c0
667 #define INIT_HCA_MC_BASE_OFFSET (INIT_HCA_MCAST_OFFSET + 0x00)
668 #define INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x12)
669 #define INIT_HCA_LOG_MC_HASH_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x16)
670 #define INIT_HCA_LOG_MC_TABLE_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x1b)
671 #define INIT_HCA_TPT_OFFSET 0x0f0
672 #define INIT_HCA_DMPT_BASE_OFFSET (INIT_HCA_TPT_OFFSET + 0x00)
673 #define INIT_HCA_LOG_MPT_SZ_OFFSET (INIT_HCA_TPT_OFFSET + 0x0b)
674 #define INIT_HCA_MTT_BASE_OFFSET (INIT_HCA_TPT_OFFSET + 0x10)
675 #define INIT_HCA_CMPT_BASE_OFFSET (INIT_HCA_TPT_OFFSET + 0x18)
676 #define INIT_HCA_UAR_OFFSET 0x120
677 #define INIT_HCA_LOG_UAR_SZ_OFFSET (INIT_HCA_UAR_OFFSET + 0x0a)
678 #define INIT_HCA_UAR_PAGE_SZ_OFFSET (INIT_HCA_UAR_OFFSET + 0x0b)
679
680 mailbox = mlx4_alloc_cmd_mailbox(dev);
681 if (IS_ERR(mailbox))
682 return PTR_ERR(mailbox);
683 inbox = mailbox->buf;
684
685 memset(inbox, 0, INIT_HCA_IN_SIZE);
686
687 *((u8 *) mailbox->buf + INIT_HCA_VERSION_OFFSET) = INIT_HCA_VERSION;
688
689 #if defined(__LITTLE_ENDIAN)
690 *(inbox + INIT_HCA_FLAGS_OFFSET / 4) &= ~cpu_to_be32(1 << 1);
691 #elif defined(__BIG_ENDIAN)
692 *(inbox + INIT_HCA_FLAGS_OFFSET / 4) |= cpu_to_be32(1 << 1);
693 #else
694 #error Host endianness not defined
695 #endif
696 /* Check port for UD address vector: */
697 *(inbox + INIT_HCA_FLAGS_OFFSET / 4) |= cpu_to_be32(1);
698
699 /* QPC/EEC/CQC/EQC/RDMARC attributes */
700
701 MLX4_PUT(inbox, param->qpc_base, INIT_HCA_QPC_BASE_OFFSET);
702 MLX4_PUT(inbox, param->log_num_qps, INIT_HCA_LOG_QP_OFFSET);
703 MLX4_PUT(inbox, param->srqc_base, INIT_HCA_SRQC_BASE_OFFSET);
704 MLX4_PUT(inbox, param->log_num_srqs, INIT_HCA_LOG_SRQ_OFFSET);
705 MLX4_PUT(inbox, param->cqc_base, INIT_HCA_CQC_BASE_OFFSET);
706 MLX4_PUT(inbox, param->log_num_cqs, INIT_HCA_LOG_CQ_OFFSET);
707 MLX4_PUT(inbox, param->altc_base, INIT_HCA_ALTC_BASE_OFFSET);
708 MLX4_PUT(inbox, param->auxc_base, INIT_HCA_AUXC_BASE_OFFSET);
709 MLX4_PUT(inbox, param->eqc_base, INIT_HCA_EQC_BASE_OFFSET);
710 MLX4_PUT(inbox, param->log_num_eqs, INIT_HCA_LOG_EQ_OFFSET);
711 MLX4_PUT(inbox, param->rdmarc_base, INIT_HCA_RDMARC_BASE_OFFSET);
712 MLX4_PUT(inbox, param->log_rd_per_qp, INIT_HCA_LOG_RD_OFFSET);
713
714 /* multicast attributes */
715
716 MLX4_PUT(inbox, param->mc_base, INIT_HCA_MC_BASE_OFFSET);
717 MLX4_PUT(inbox, param->log_mc_entry_sz, INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET);
718 MLX4_PUT(inbox, param->log_mc_hash_sz, INIT_HCA_LOG_MC_HASH_SZ_OFFSET);
719 MLX4_PUT(inbox, param->log_mc_table_sz, INIT_HCA_LOG_MC_TABLE_SZ_OFFSET);
720
721 /* TPT attributes */
722
723 MLX4_PUT(inbox, param->dmpt_base, INIT_HCA_DMPT_BASE_OFFSET);
724 MLX4_PUT(inbox, param->log_mpt_sz, INIT_HCA_LOG_MPT_SZ_OFFSET);
725 MLX4_PUT(inbox, param->mtt_base, INIT_HCA_MTT_BASE_OFFSET);
726 MLX4_PUT(inbox, param->cmpt_base, INIT_HCA_CMPT_BASE_OFFSET);
727
728 /* UAR attributes */
729
730 MLX4_PUT(inbox, (u8) (PAGE_SHIFT - 12), INIT_HCA_UAR_PAGE_SZ_OFFSET);
731 MLX4_PUT(inbox, param->log_uar_sz, INIT_HCA_LOG_UAR_SZ_OFFSET);
732
733 err = mlx4_cmd(dev, mailbox->dma, 0, 0, MLX4_CMD_INIT_HCA, 10000);
734
735 if (err)
736 mlx4_err(dev, "INIT_HCA returns %d\n", err);
737
738 mlx4_free_cmd_mailbox(dev, mailbox);
739 return err;
740 }
741
742 int mlx4_INIT_PORT(struct mlx4_dev *dev, int port)
743 {
744 struct mlx4_cmd_mailbox *mailbox;
745 u32 *inbox;
746 int err;
747 u32 flags;
748 u16 field;
749
750 if (dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
751 #define INIT_PORT_IN_SIZE 256
752 #define INIT_PORT_FLAGS_OFFSET 0x00
753 #define INIT_PORT_FLAG_SIG (1 << 18)
754 #define INIT_PORT_FLAG_NG (1 << 17)
755 #define INIT_PORT_FLAG_G0 (1 << 16)
756 #define INIT_PORT_VL_SHIFT 4
757 #define INIT_PORT_PORT_WIDTH_SHIFT 8
758 #define INIT_PORT_MTU_OFFSET 0x04
759 #define INIT_PORT_MAX_GID_OFFSET 0x06
760 #define INIT_PORT_MAX_PKEY_OFFSET 0x0a
761 #define INIT_PORT_GUID0_OFFSET 0x10
762 #define INIT_PORT_NODE_GUID_OFFSET 0x18
763 #define INIT_PORT_SI_GUID_OFFSET 0x20
764
765 mailbox = mlx4_alloc_cmd_mailbox(dev);
766 if (IS_ERR(mailbox))
767 return PTR_ERR(mailbox);
768 inbox = mailbox->buf;
769
770 memset(inbox, 0, INIT_PORT_IN_SIZE);
771
772 flags = 0;
773 flags |= (dev->caps.vl_cap[port] & 0xf) << INIT_PORT_VL_SHIFT;
774 flags |= (dev->caps.port_width_cap[port] & 0xf) << INIT_PORT_PORT_WIDTH_SHIFT;
775 MLX4_PUT(inbox, flags, INIT_PORT_FLAGS_OFFSET);
776
777 field = 128 << dev->caps.mtu_cap[port];
778 MLX4_PUT(inbox, field, INIT_PORT_MTU_OFFSET);
779 field = dev->caps.gid_table_len[port];
780 MLX4_PUT(inbox, field, INIT_PORT_MAX_GID_OFFSET);
781 field = dev->caps.pkey_table_len[port];
782 MLX4_PUT(inbox, field, INIT_PORT_MAX_PKEY_OFFSET);
783
784 err = mlx4_cmd(dev, mailbox->dma, port, 0, MLX4_CMD_INIT_PORT,
785 MLX4_CMD_TIME_CLASS_A);
786
787 mlx4_free_cmd_mailbox(dev, mailbox);
788 } else
789 err = mlx4_cmd(dev, 0, port, 0, MLX4_CMD_INIT_PORT,
790 MLX4_CMD_TIME_CLASS_A);
791
792 return err;
793 }
794 EXPORT_SYMBOL_GPL(mlx4_INIT_PORT);
795
796 int mlx4_CLOSE_PORT(struct mlx4_dev *dev, int port)
797 {
798 return mlx4_cmd(dev, 0, port, 0, MLX4_CMD_CLOSE_PORT, 1000);
799 }
800 EXPORT_SYMBOL_GPL(mlx4_CLOSE_PORT);
801
802 int mlx4_CLOSE_HCA(struct mlx4_dev *dev, int panic)
803 {
804 return mlx4_cmd(dev, 0, 0, panic, MLX4_CMD_CLOSE_HCA, 1000);
805 }
806
807 int mlx4_SET_ICM_SIZE(struct mlx4_dev *dev, u64 icm_size, u64 *aux_pages)
808 {
809 int ret = mlx4_cmd_imm(dev, icm_size, aux_pages, 0, 0,
810 MLX4_CMD_SET_ICM_SIZE,
811 MLX4_CMD_TIME_CLASS_A);
812 if (ret)
813 return ret;
814
815 /*
816 * Round up number of system pages needed in case
817 * MLX4_ICM_PAGE_SIZE < PAGE_SIZE.
818 */
819 *aux_pages = ALIGN(*aux_pages, PAGE_SIZE / MLX4_ICM_PAGE_SIZE) >>
820 (PAGE_SHIFT - MLX4_ICM_PAGE_SHIFT);
821
822 return 0;
823 }
824
825 int mlx4_NOP(struct mlx4_dev *dev)
826 {
827 /* Input modifier of 0x1f means "finish as soon as possible." */
828 return mlx4_cmd(dev, 0, 0x1f, 0, MLX4_CMD_NOP, 100);
829 }
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