Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
40enum {
41 MLX4_COMMAND_INTERFACE_MIN_REV = 2,
42 MLX4_COMMAND_INTERFACE_MAX_REV = 3,
43 MLX4_COMMAND_INTERFACE_NEW_PORT_CMDS = 3,
44};
45
46extern void __buggy_use_of_MLX4_GET(void);
47extern 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
73static 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
104int 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_GSO_OFFSET 0x2d
137#define QUERY_DEV_CAP_MAX_RDMA_OFFSET 0x2f
138#define QUERY_DEV_CAP_RSZ_SRQ_OFFSET 0x33
139#define QUERY_DEV_CAP_ACK_DELAY_OFFSET 0x35
140#define QUERY_DEV_CAP_MTU_WIDTH_OFFSET 0x36
141#define QUERY_DEV_CAP_VL_PORT_OFFSET 0x37
142#define QUERY_DEV_CAP_MAX_MSG_SZ_OFFSET 0x38
143#define QUERY_DEV_CAP_MAX_GID_OFFSET 0x3b
144#define QUERY_DEV_CAP_RATE_SUPPORT_OFFSET 0x3c
145#define QUERY_DEV_CAP_MAX_PKEY_OFFSET 0x3f
146#define QUERY_DEV_CAP_FLAGS_OFFSET 0x44
147#define QUERY_DEV_CAP_RSVD_UAR_OFFSET 0x48
148#define QUERY_DEV_CAP_UAR_SZ_OFFSET 0x49
149#define QUERY_DEV_CAP_PAGE_SZ_OFFSET 0x4b
150#define QUERY_DEV_CAP_BF_OFFSET 0x4c
151#define QUERY_DEV_CAP_LOG_BF_REG_SZ_OFFSET 0x4d
152#define QUERY_DEV_CAP_LOG_MAX_BF_REGS_PER_PAGE_OFFSET 0x4e
153#define QUERY_DEV_CAP_LOG_MAX_BF_PAGES_OFFSET 0x4f
154#define QUERY_DEV_CAP_MAX_SG_SQ_OFFSET 0x51
155#define QUERY_DEV_CAP_MAX_DESC_SZ_SQ_OFFSET 0x52
156#define QUERY_DEV_CAP_MAX_SG_RQ_OFFSET 0x55
157#define QUERY_DEV_CAP_MAX_DESC_SZ_RQ_OFFSET 0x56
158#define QUERY_DEV_CAP_MAX_QP_MCG_OFFSET 0x61
159#define QUERY_DEV_CAP_RSVD_MCG_OFFSET 0x62
160#define QUERY_DEV_CAP_MAX_MCG_OFFSET 0x63
161#define QUERY_DEV_CAP_RSVD_PD_OFFSET 0x64
162#define QUERY_DEV_CAP_MAX_PD_OFFSET 0x65
163#define QUERY_DEV_CAP_RDMARC_ENTRY_SZ_OFFSET 0x80
164#define QUERY_DEV_CAP_QPC_ENTRY_SZ_OFFSET 0x82
165#define QUERY_DEV_CAP_AUX_ENTRY_SZ_OFFSET 0x84
166#define QUERY_DEV_CAP_ALTC_ENTRY_SZ_OFFSET 0x86
167#define QUERY_DEV_CAP_EQC_ENTRY_SZ_OFFSET 0x88
168#define QUERY_DEV_CAP_CQC_ENTRY_SZ_OFFSET 0x8a
169#define QUERY_DEV_CAP_SRQ_ENTRY_SZ_OFFSET 0x8c
170#define QUERY_DEV_CAP_C_MPT_ENTRY_SZ_OFFSET 0x8e
171#define QUERY_DEV_CAP_MTT_ENTRY_SZ_OFFSET 0x90
172#define QUERY_DEV_CAP_D_MPT_ENTRY_SZ_OFFSET 0x92
173#define QUERY_DEV_CAP_BMME_FLAGS_OFFSET 0x97
174#define QUERY_DEV_CAP_RSVD_LKEY_OFFSET 0x98
175#define QUERY_DEV_CAP_MAX_ICM_SZ_OFFSET 0xa0
176
177 mailbox = mlx4_alloc_cmd_mailbox(dev);
178 if (IS_ERR(mailbox))
179 return PTR_ERR(mailbox);
180 outbox = mailbox->buf;
181
182 err = mlx4_cmd_box(dev, 0, mailbox->dma, 0, 0, MLX4_CMD_QUERY_DEV_CAP,
183 MLX4_CMD_TIME_CLASS_A);
184 if (err)
185 goto out;
186
187 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_QP_OFFSET);
188 dev_cap->reserved_qps = 1 << (field & 0xf);
189 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_QP_OFFSET);
190 dev_cap->max_qps = 1 << (field & 0x1f);
191 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_SRQ_OFFSET);
192 dev_cap->reserved_srqs = 1 << (field >> 4);
193 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_SRQ_OFFSET);
194 dev_cap->max_srqs = 1 << (field & 0x1f);
195 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_CQ_SZ_OFFSET);
196 dev_cap->max_cq_sz = 1 << field;
197 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_CQ_OFFSET);
198 dev_cap->reserved_cqs = 1 << (field & 0xf);
199 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_CQ_OFFSET);
200 dev_cap->max_cqs = 1 << (field & 0x1f);
201 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_MPT_OFFSET);
202 dev_cap->max_mpts = 1 << (field & 0x3f);
203 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_EQ_OFFSET);
204 dev_cap->reserved_eqs = 1 << (field & 0xf);
205 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_EQ_OFFSET);
206 dev_cap->max_eqs = 1 << (field & 0xf);
207 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_MTT_OFFSET);
208 dev_cap->reserved_mtts = 1 << (field >> 4);
209 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_MRW_SZ_OFFSET);
210 dev_cap->max_mrw_sz = 1 << field;
211 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_MRW_OFFSET);
212 dev_cap->reserved_mrws = 1 << (field & 0xf);
213 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_MTT_SEG_OFFSET);
214 dev_cap->max_mtt_seg = 1 << (field & 0x3f);
215 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_REQ_QP_OFFSET);
216 dev_cap->max_requester_per_qp = 1 << (field & 0x3f);
217 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_RES_QP_OFFSET);
218 dev_cap->max_responder_per_qp = 1 << (field & 0x3f);
219 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_GSO_OFFSET);
220 field &= 0x1f;
221 if (!field)
222 dev_cap->max_gso_sz = 0;
223 else
224 dev_cap->max_gso_sz = 1 << field;
225
226 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_RDMA_OFFSET);
227 dev_cap->max_rdma_global = 1 << (field & 0x3f);
228 MLX4_GET(field, outbox, QUERY_DEV_CAP_ACK_DELAY_OFFSET);
229 dev_cap->local_ca_ack_delay = field & 0x1f;
230 MLX4_GET(field, outbox, QUERY_DEV_CAP_VL_PORT_OFFSET);
231 dev_cap->num_ports = field & 0xf;
232 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_MSG_SZ_OFFSET);
233 dev_cap->max_msg_sz = 1 << (field & 0x1f);
234 MLX4_GET(stat_rate, outbox, QUERY_DEV_CAP_RATE_SUPPORT_OFFSET);
235 dev_cap->stat_rate_support = stat_rate;
236 MLX4_GET(dev_cap->flags, outbox, QUERY_DEV_CAP_FLAGS_OFFSET);
237 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_UAR_OFFSET);
238 dev_cap->reserved_uars = field >> 4;
239 MLX4_GET(field, outbox, QUERY_DEV_CAP_UAR_SZ_OFFSET);
240 dev_cap->uar_size = 1 << ((field & 0x3f) + 20);
241 MLX4_GET(field, outbox, QUERY_DEV_CAP_PAGE_SZ_OFFSET);
242 dev_cap->min_page_sz = 1 << field;
243
244 MLX4_GET(field, outbox, QUERY_DEV_CAP_BF_OFFSET);
245 if (field & 0x80) {
246 MLX4_GET(field, outbox, QUERY_DEV_CAP_LOG_BF_REG_SZ_OFFSET);
247 dev_cap->bf_reg_size = 1 << (field & 0x1f);
248 MLX4_GET(field, outbox, QUERY_DEV_CAP_LOG_MAX_BF_REGS_PER_PAGE_OFFSET);
249 dev_cap->bf_regs_per_page = 1 << (field & 0x3f);
250 mlx4_dbg(dev, "BlueFlame available (reg size %d, regs/page %d)\n",
251 dev_cap->bf_reg_size, dev_cap->bf_regs_per_page);
252 } else {
253 dev_cap->bf_reg_size = 0;
254 mlx4_dbg(dev, "BlueFlame not available\n");
255 }
256
257 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_SG_SQ_OFFSET);
258 dev_cap->max_sq_sg = field;
259 MLX4_GET(size, outbox, QUERY_DEV_CAP_MAX_DESC_SZ_SQ_OFFSET);
260 dev_cap->max_sq_desc_sz = size;
261
262 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_QP_MCG_OFFSET);
263 dev_cap->max_qp_per_mcg = 1 << field;
264 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_MCG_OFFSET);
265 dev_cap->reserved_mgms = field & 0xf;
266 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_MCG_OFFSET);
267 dev_cap->max_mcgs = 1 << field;
268 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSVD_PD_OFFSET);
269 dev_cap->reserved_pds = field >> 4;
270 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_PD_OFFSET);
271 dev_cap->max_pds = 1 << (field & 0x3f);
272
273 MLX4_GET(size, outbox, QUERY_DEV_CAP_RDMARC_ENTRY_SZ_OFFSET);
274 dev_cap->rdmarc_entry_sz = size;
275 MLX4_GET(size, outbox, QUERY_DEV_CAP_QPC_ENTRY_SZ_OFFSET);
276 dev_cap->qpc_entry_sz = size;
277 MLX4_GET(size, outbox, QUERY_DEV_CAP_AUX_ENTRY_SZ_OFFSET);
278 dev_cap->aux_entry_sz = size;
279 MLX4_GET(size, outbox, QUERY_DEV_CAP_ALTC_ENTRY_SZ_OFFSET);
280 dev_cap->altc_entry_sz = size;
281 MLX4_GET(size, outbox, QUERY_DEV_CAP_EQC_ENTRY_SZ_OFFSET);
282 dev_cap->eqc_entry_sz = size;
283 MLX4_GET(size, outbox, QUERY_DEV_CAP_CQC_ENTRY_SZ_OFFSET);
284 dev_cap->cqc_entry_sz = size;
285 MLX4_GET(size, outbox, QUERY_DEV_CAP_SRQ_ENTRY_SZ_OFFSET);
286 dev_cap->srq_entry_sz = size;
287 MLX4_GET(size, outbox, QUERY_DEV_CAP_C_MPT_ENTRY_SZ_OFFSET);
288 dev_cap->cmpt_entry_sz = size;
289 MLX4_GET(size, outbox, QUERY_DEV_CAP_MTT_ENTRY_SZ_OFFSET);
290 dev_cap->mtt_entry_sz = size;
291 MLX4_GET(size, outbox, QUERY_DEV_CAP_D_MPT_ENTRY_SZ_OFFSET);
292 dev_cap->dmpt_entry_sz = size;
293
294 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_SRQ_SZ_OFFSET);
295 dev_cap->max_srq_sz = 1 << field;
296 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_QP_SZ_OFFSET);
297 dev_cap->max_qp_sz = 1 << field;
298 MLX4_GET(field, outbox, QUERY_DEV_CAP_RSZ_SRQ_OFFSET);
299 dev_cap->resize_srq = field & 1;
300 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_SG_RQ_OFFSET);
301 dev_cap->max_rq_sg = field;
302 MLX4_GET(size, outbox, QUERY_DEV_CAP_MAX_DESC_SZ_RQ_OFFSET);
303 dev_cap->max_rq_desc_sz = size;
304
305 MLX4_GET(dev_cap->bmme_flags, outbox,
306 QUERY_DEV_CAP_BMME_FLAGS_OFFSET);
307 MLX4_GET(dev_cap->reserved_lkey, outbox,
308 QUERY_DEV_CAP_RSVD_LKEY_OFFSET);
309 MLX4_GET(dev_cap->max_icm_sz, outbox,
310 QUERY_DEV_CAP_MAX_ICM_SZ_OFFSET);
311
312 if (dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
313 for (i = 1; i <= dev_cap->num_ports; ++i) {
314 MLX4_GET(field, outbox, QUERY_DEV_CAP_VL_PORT_OFFSET);
315 dev_cap->max_vl[i] = field >> 4;
316 MLX4_GET(field, outbox, QUERY_DEV_CAP_MTU_WIDTH_OFFSET);
317 dev_cap->max_mtu[i] = field >> 4;
318 dev_cap->max_port_width[i] = field & 0xf;
319 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_GID_OFFSET);
320 dev_cap->max_gids[i] = 1 << (field & 0xf);
321 MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_PKEY_OFFSET);
322 dev_cap->max_pkeys[i] = 1 << (field & 0xf);
323 }
324 } else {
325#define QUERY_PORT_MTU_OFFSET 0x01
326#define QUERY_PORT_WIDTH_OFFSET 0x06
327#define QUERY_PORT_MAX_GID_PKEY_OFFSET 0x07
328#define QUERY_PORT_MAX_VL_OFFSET 0x0b
329
330 for (i = 1; i <= dev_cap->num_ports; ++i) {
331 err = mlx4_cmd_box(dev, 0, mailbox->dma, i, 0, MLX4_CMD_QUERY_PORT,
332 MLX4_CMD_TIME_CLASS_B);
333 if (err)
334 goto out;
335
336 MLX4_GET(field, outbox, QUERY_PORT_MTU_OFFSET);
337 dev_cap->max_mtu[i] = field & 0xf;
338 MLX4_GET(field, outbox, QUERY_PORT_WIDTH_OFFSET);
339 dev_cap->max_port_width[i] = field & 0xf;
340 MLX4_GET(field, outbox, QUERY_PORT_MAX_GID_PKEY_OFFSET);
341 dev_cap->max_gids[i] = 1 << (field >> 4);
342 dev_cap->max_pkeys[i] = 1 << (field & 0xf);
343 MLX4_GET(field, outbox, QUERY_PORT_MAX_VL_OFFSET);
344 dev_cap->max_vl[i] = field & 0xf;
345 }
346 }
347
348 if (dev_cap->bmme_flags & 1)
349 mlx4_dbg(dev, "Base MM extensions: yes "
350 "(flags %d, rsvd L_Key %08x)\n",
351 dev_cap->bmme_flags, dev_cap->reserved_lkey);
352 else
353 mlx4_dbg(dev, "Base MM extensions: no\n");
354
355 /*
356 * Each UAR has 4 EQ doorbells; so if a UAR is reserved, then
357 * we can't use any EQs whose doorbell falls on that page,
358 * even if the EQ itself isn't reserved.
359 */
360 dev_cap->reserved_eqs = max(dev_cap->reserved_uars * 4,
361 dev_cap->reserved_eqs);
362
363 mlx4_dbg(dev, "Max ICM size %lld MB\n",
364 (unsigned long long) dev_cap->max_icm_sz >> 20);
365 mlx4_dbg(dev, "Max QPs: %d, reserved QPs: %d, entry size: %d\n",
366 dev_cap->max_qps, dev_cap->reserved_qps, dev_cap->qpc_entry_sz);
367 mlx4_dbg(dev, "Max SRQs: %d, reserved SRQs: %d, entry size: %d\n",
368 dev_cap->max_srqs, dev_cap->reserved_srqs, dev_cap->srq_entry_sz);
369 mlx4_dbg(dev, "Max CQs: %d, reserved CQs: %d, entry size: %d\n",
370 dev_cap->max_cqs, dev_cap->reserved_cqs, dev_cap->cqc_entry_sz);
371 mlx4_dbg(dev, "Max EQs: %d, reserved EQs: %d, entry size: %d\n",
372 dev_cap->max_eqs, dev_cap->reserved_eqs, dev_cap->eqc_entry_sz);
373 mlx4_dbg(dev, "reserved MPTs: %d, reserved MTTs: %d\n",
374 dev_cap->reserved_mrws, dev_cap->reserved_mtts);
375 mlx4_dbg(dev, "Max PDs: %d, reserved PDs: %d, reserved UARs: %d\n",
376 dev_cap->max_pds, dev_cap->reserved_pds, dev_cap->reserved_uars);
377 mlx4_dbg(dev, "Max QP/MCG: %d, reserved MGMs: %d\n",
378 dev_cap->max_pds, dev_cap->reserved_mgms);
379 mlx4_dbg(dev, "Max CQEs: %d, max WQEs: %d, max SRQ WQEs: %d\n",
380 dev_cap->max_cq_sz, dev_cap->max_qp_sz, dev_cap->max_srq_sz);
381 mlx4_dbg(dev, "Local CA ACK delay: %d, max MTU: %d, port width cap: %d\n",
382 dev_cap->local_ca_ack_delay, 128 << dev_cap->max_mtu[1],
383 dev_cap->max_port_width[1]);
384 mlx4_dbg(dev, "Max SQ desc size: %d, max SQ S/G: %d\n",
385 dev_cap->max_sq_desc_sz, dev_cap->max_sq_sg);
386 mlx4_dbg(dev, "Max RQ desc size: %d, max RQ S/G: %d\n",
387 dev_cap->max_rq_desc_sz, dev_cap->max_rq_sg);
388 mlx4_dbg(dev, "Max GSO size: %d\n", dev_cap->max_gso_sz);
389
390 dump_dev_cap_flags(dev, dev_cap->flags);
391
392out:
393 mlx4_free_cmd_mailbox(dev, mailbox);
394 return err;
395}
396
397int mlx4_map_cmd(struct mlx4_dev *dev, u16 op, struct mlx4_icm *icm, u64 virt)
398{
399 struct mlx4_cmd_mailbox *mailbox;
400 struct mlx4_icm_iter iter;
401 __be64 *pages;
402 int lg;
403 int nent = 0;
404 int i;
405 int err = 0;
406 int ts = 0, tc = 0;
407
408 mailbox = mlx4_alloc_cmd_mailbox(dev);
409 if (IS_ERR(mailbox))
410 return PTR_ERR(mailbox);
411 memset(mailbox->buf, 0, MLX4_MAILBOX_SIZE);
412 pages = mailbox->buf;
413
414 for (mlx4_icm_first(icm, &iter);
415 !mlx4_icm_last(&iter);
416 mlx4_icm_next(&iter)) {
417 /*
418 * We have to pass pages that are aligned to their
419 * size, so find the least significant 1 in the
420 * address or size and use that as our log2 size.
421 */
422 lg = ffs(mlx4_icm_addr(&iter) | mlx4_icm_size(&iter)) - 1;
423 if (lg < MLX4_ICM_PAGE_SHIFT) {
424 mlx4_warn(dev, "Got FW area not aligned to %d (%llx/%lx).\n",
425 MLX4_ICM_PAGE_SIZE,
426 (unsigned long long) mlx4_icm_addr(&iter),
427 mlx4_icm_size(&iter));
428 err = -EINVAL;
429 goto out;
430 }
431
432 for (i = 0; i < mlx4_icm_size(&iter) >> lg; ++i) {
433 if (virt != -1) {
434 pages[nent * 2] = cpu_to_be64(virt);
435 virt += 1 << lg;
436 }
437
438 pages[nent * 2 + 1] =
439 cpu_to_be64((mlx4_icm_addr(&iter) + (i << lg)) |
440 (lg - MLX4_ICM_PAGE_SHIFT));
441 ts += 1 << (lg - 10);
442 ++tc;
443
444 if (++nent == MLX4_MAILBOX_SIZE / 16) {
445 err = mlx4_cmd(dev, mailbox->dma, nent, 0, op,
446 MLX4_CMD_TIME_CLASS_B);
447 if (err)
448 goto out;
449 nent = 0;
450 }
451 }
452 }
453
454 if (nent)
455 err = mlx4_cmd(dev, mailbox->dma, nent, 0, op, MLX4_CMD_TIME_CLASS_B);
456 if (err)
457 goto out;
458
459 switch (op) {
460 case MLX4_CMD_MAP_FA:
461 mlx4_dbg(dev, "Mapped %d chunks/%d KB for FW.\n", tc, ts);
462 break;
463 case MLX4_CMD_MAP_ICM_AUX:
464 mlx4_dbg(dev, "Mapped %d chunks/%d KB for ICM aux.\n", tc, ts);
465 break;
466 case MLX4_CMD_MAP_ICM:
467 mlx4_dbg(dev, "Mapped %d chunks/%d KB at %llx for ICM.\n",
468 tc, ts, (unsigned long long) virt - (ts << 10));
469 break;
470 }
471
472out:
473 mlx4_free_cmd_mailbox(dev, mailbox);
474 return err;
475}
476
477int mlx4_MAP_FA(struct mlx4_dev *dev, struct mlx4_icm *icm)
478{
479 return mlx4_map_cmd(dev, MLX4_CMD_MAP_FA, icm, -1);
480}
481
482int mlx4_UNMAP_FA(struct mlx4_dev *dev)
483{
484 return mlx4_cmd(dev, 0, 0, 0, MLX4_CMD_UNMAP_FA, MLX4_CMD_TIME_CLASS_B);
485}
486
487
488int mlx4_RUN_FW(struct mlx4_dev *dev)
489{
490 return mlx4_cmd(dev, 0, 0, 0, MLX4_CMD_RUN_FW, MLX4_CMD_TIME_CLASS_A);
491}
492
493int mlx4_QUERY_FW(struct mlx4_dev *dev)
494{
495 struct mlx4_fw *fw = &mlx4_priv(dev)->fw;
496 struct mlx4_cmd *cmd = &mlx4_priv(dev)->cmd;
497 struct mlx4_cmd_mailbox *mailbox;
498 u32 *outbox;
499 int err = 0;
500 u64 fw_ver;
501 u16 cmd_if_rev;
502 u8 lg;
503
504#define QUERY_FW_OUT_SIZE 0x100
505#define QUERY_FW_VER_OFFSET 0x00
506#define QUERY_FW_CMD_IF_REV_OFFSET 0x0a
507#define QUERY_FW_MAX_CMD_OFFSET 0x0f
508#define QUERY_FW_ERR_START_OFFSET 0x30
509#define QUERY_FW_ERR_SIZE_OFFSET 0x38
510#define QUERY_FW_ERR_BAR_OFFSET 0x3c
511
512#define QUERY_FW_SIZE_OFFSET 0x00
513#define QUERY_FW_CLR_INT_BASE_OFFSET 0x20
514#define QUERY_FW_CLR_INT_BAR_OFFSET 0x28
515
516 mailbox = mlx4_alloc_cmd_mailbox(dev);
517 if (IS_ERR(mailbox))
518 return PTR_ERR(mailbox);
519 outbox = mailbox->buf;
520
521 err = mlx4_cmd_box(dev, 0, mailbox->dma, 0, 0, MLX4_CMD_QUERY_FW,
522 MLX4_CMD_TIME_CLASS_A);
523 if (err)
524 goto out;
525
526 MLX4_GET(fw_ver, outbox, QUERY_FW_VER_OFFSET);
527 /*
528 * FW subminor version is at more significant bits than minor
529 * version, so swap here.
530 */
531 dev->caps.fw_ver = (fw_ver & 0xffff00000000ull) |
532 ((fw_ver & 0xffff0000ull) >> 16) |
533 ((fw_ver & 0x0000ffffull) << 16);
534
535 MLX4_GET(cmd_if_rev, outbox, QUERY_FW_CMD_IF_REV_OFFSET);
536 if (cmd_if_rev < MLX4_COMMAND_INTERFACE_MIN_REV ||
537 cmd_if_rev > MLX4_COMMAND_INTERFACE_MAX_REV) {
538 mlx4_err(dev, "Installed FW has unsupported "
539 "command interface revision %d.\n",
540 cmd_if_rev);
541 mlx4_err(dev, "(Installed FW version is %d.%d.%03d)\n",
542 (int) (dev->caps.fw_ver >> 32),
543 (int) (dev->caps.fw_ver >> 16) & 0xffff,
544 (int) dev->caps.fw_ver & 0xffff);
545 mlx4_err(dev, "This driver version supports only revisions %d to %d.\n",
546 MLX4_COMMAND_INTERFACE_MIN_REV, MLX4_COMMAND_INTERFACE_MAX_REV);
547 err = -ENODEV;
548 goto out;
549 }
550
551 if (cmd_if_rev < MLX4_COMMAND_INTERFACE_NEW_PORT_CMDS)
552 dev->flags |= MLX4_FLAG_OLD_PORT_CMDS;
553
554 MLX4_GET(lg, outbox, QUERY_FW_MAX_CMD_OFFSET);
555 cmd->max_cmds = 1 << lg;
556
557 mlx4_dbg(dev, "FW version %d.%d.%03d (cmd intf rev %d), max commands %d\n",
558 (int) (dev->caps.fw_ver >> 32),
559 (int) (dev->caps.fw_ver >> 16) & 0xffff,
560 (int) dev->caps.fw_ver & 0xffff,
561 cmd_if_rev, cmd->max_cmds);
562
563 MLX4_GET(fw->catas_offset, outbox, QUERY_FW_ERR_START_OFFSET);
564 MLX4_GET(fw->catas_size, outbox, QUERY_FW_ERR_SIZE_OFFSET);
565 MLX4_GET(fw->catas_bar, outbox, QUERY_FW_ERR_BAR_OFFSET);
566 fw->catas_bar = (fw->catas_bar >> 6) * 2;
567
568 mlx4_dbg(dev, "Catastrophic error buffer at 0x%llx, size 0x%x, BAR %d\n",
569 (unsigned long long) fw->catas_offset, fw->catas_size, fw->catas_bar);
570
571 MLX4_GET(fw->fw_pages, outbox, QUERY_FW_SIZE_OFFSET);
572 MLX4_GET(fw->clr_int_base, outbox, QUERY_FW_CLR_INT_BASE_OFFSET);
573 MLX4_GET(fw->clr_int_bar, outbox, QUERY_FW_CLR_INT_BAR_OFFSET);
574 fw->clr_int_bar = (fw->clr_int_bar >> 6) * 2;
575
576 mlx4_dbg(dev, "FW size %d KB\n", fw->fw_pages >> 2);
577
578 /*
579 * Round up number of system pages needed in case
580 * MLX4_ICM_PAGE_SIZE < PAGE_SIZE.
581 */
582 fw->fw_pages =
583 ALIGN(fw->fw_pages, PAGE_SIZE / MLX4_ICM_PAGE_SIZE) >>
584 (PAGE_SHIFT - MLX4_ICM_PAGE_SHIFT);
585
586 mlx4_dbg(dev, "Clear int @ %llx, BAR %d\n",
587 (unsigned long long) fw->clr_int_base, fw->clr_int_bar);
588
589out:
590 mlx4_free_cmd_mailbox(dev, mailbox);
591 return err;
592}
593
594static void get_board_id(void *vsd, char *board_id)
595{
596 int i;
597
598#define VSD_OFFSET_SIG1 0x00
599#define VSD_OFFSET_SIG2 0xde
600#define VSD_OFFSET_MLX_BOARD_ID 0xd0
601#define VSD_OFFSET_TS_BOARD_ID 0x20
602
603#define VSD_SIGNATURE_TOPSPIN 0x5ad
604
605 memset(board_id, 0, MLX4_BOARD_ID_LEN);
606
607 if (be16_to_cpup(vsd + VSD_OFFSET_SIG1) == VSD_SIGNATURE_TOPSPIN &&
608 be16_to_cpup(vsd + VSD_OFFSET_SIG2) == VSD_SIGNATURE_TOPSPIN) {
609 strlcpy(board_id, vsd + VSD_OFFSET_TS_BOARD_ID, MLX4_BOARD_ID_LEN);
610 } else {
611 /*
612 * The board ID is a string but the firmware byte
613 * swaps each 4-byte word before passing it back to
614 * us. Therefore we need to swab it before printing.
615 */
616 for (i = 0; i < 4; ++i)
617 ((u32 *) board_id)[i] =
618 swab32(*(u32 *) (vsd + VSD_OFFSET_MLX_BOARD_ID + i * 4));
619 }
620}
621
622int mlx4_QUERY_ADAPTER(struct mlx4_dev *dev, struct mlx4_adapter *adapter)
623{
624 struct mlx4_cmd_mailbox *mailbox;
625 u32 *outbox;
626 int err;
627
628#define QUERY_ADAPTER_OUT_SIZE 0x100
629#define QUERY_ADAPTER_INTA_PIN_OFFSET 0x10
630#define QUERY_ADAPTER_VSD_OFFSET 0x20
631
632 mailbox = mlx4_alloc_cmd_mailbox(dev);
633 if (IS_ERR(mailbox))
634 return PTR_ERR(mailbox);
635 outbox = mailbox->buf;
636
637 err = mlx4_cmd_box(dev, 0, mailbox->dma, 0, 0, MLX4_CMD_QUERY_ADAPTER,
638 MLX4_CMD_TIME_CLASS_A);
639 if (err)
640 goto out;
641
642 MLX4_GET(adapter->inta_pin, outbox, QUERY_ADAPTER_INTA_PIN_OFFSET);
643
644 get_board_id(outbox + QUERY_ADAPTER_VSD_OFFSET / 4,
645 adapter->board_id);
646
647out:
648 mlx4_free_cmd_mailbox(dev, mailbox);
649 return err;
650}
651
652int mlx4_INIT_HCA(struct mlx4_dev *dev, struct mlx4_init_hca_param *param)
653{
654 struct mlx4_cmd_mailbox *mailbox;
655 __be32 *inbox;
656 int err;
657
658#define INIT_HCA_IN_SIZE 0x200
659#define INIT_HCA_VERSION_OFFSET 0x000
660#define INIT_HCA_VERSION 2
661#define INIT_HCA_FLAGS_OFFSET 0x014
662#define INIT_HCA_QPC_OFFSET 0x020
663#define INIT_HCA_QPC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x10)
664#define INIT_HCA_LOG_QP_OFFSET (INIT_HCA_QPC_OFFSET + 0x17)
665#define INIT_HCA_SRQC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x28)
666#define INIT_HCA_LOG_SRQ_OFFSET (INIT_HCA_QPC_OFFSET + 0x2f)
667#define INIT_HCA_CQC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x30)
668#define INIT_HCA_LOG_CQ_OFFSET (INIT_HCA_QPC_OFFSET + 0x37)
669#define INIT_HCA_ALTC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x40)
670#define INIT_HCA_AUXC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x50)
671#define INIT_HCA_EQC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x60)
672#define INIT_HCA_LOG_EQ_OFFSET (INIT_HCA_QPC_OFFSET + 0x67)
673#define INIT_HCA_RDMARC_BASE_OFFSET (INIT_HCA_QPC_OFFSET + 0x70)
674#define INIT_HCA_LOG_RD_OFFSET (INIT_HCA_QPC_OFFSET + 0x77)
675#define INIT_HCA_MCAST_OFFSET 0x0c0
676#define INIT_HCA_MC_BASE_OFFSET (INIT_HCA_MCAST_OFFSET + 0x00)
677#define INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x12)
678#define INIT_HCA_LOG_MC_HASH_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x16)
679#define INIT_HCA_LOG_MC_TABLE_SZ_OFFSET (INIT_HCA_MCAST_OFFSET + 0x1b)
680#define INIT_HCA_TPT_OFFSET 0x0f0
681#define INIT_HCA_DMPT_BASE_OFFSET (INIT_HCA_TPT_OFFSET + 0x00)
682#define INIT_HCA_LOG_MPT_SZ_OFFSET (INIT_HCA_TPT_OFFSET + 0x0b)
683#define INIT_HCA_MTT_BASE_OFFSET (INIT_HCA_TPT_OFFSET + 0x10)
684#define INIT_HCA_CMPT_BASE_OFFSET (INIT_HCA_TPT_OFFSET + 0x18)
685#define INIT_HCA_UAR_OFFSET 0x120
686#define INIT_HCA_LOG_UAR_SZ_OFFSET (INIT_HCA_UAR_OFFSET + 0x0a)
687#define INIT_HCA_UAR_PAGE_SZ_OFFSET (INIT_HCA_UAR_OFFSET + 0x0b)
688
689 mailbox = mlx4_alloc_cmd_mailbox(dev);
690 if (IS_ERR(mailbox))
691 return PTR_ERR(mailbox);
692 inbox = mailbox->buf;
693
694 memset(inbox, 0, INIT_HCA_IN_SIZE);
695
696 *((u8 *) mailbox->buf + INIT_HCA_VERSION_OFFSET) = INIT_HCA_VERSION;
697
698#if defined(__LITTLE_ENDIAN)
699 *(inbox + INIT_HCA_FLAGS_OFFSET / 4) &= ~cpu_to_be32(1 << 1);
700#elif defined(__BIG_ENDIAN)
701 *(inbox + INIT_HCA_FLAGS_OFFSET / 4) |= cpu_to_be32(1 << 1);
702#else
703#error Host endianness not defined
704#endif
705 /* Check port for UD address vector: */
706 *(inbox + INIT_HCA_FLAGS_OFFSET / 4) |= cpu_to_be32(1);
707
708 /* Enable IPoIB checksumming if we can: */
709 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM)
710 *(inbox + INIT_HCA_FLAGS_OFFSET / 4) |= cpu_to_be32(1 << 3);
711
712 /* QPC/EEC/CQC/EQC/RDMARC attributes */
713
714 MLX4_PUT(inbox, param->qpc_base, INIT_HCA_QPC_BASE_OFFSET);
715 MLX4_PUT(inbox, param->log_num_qps, INIT_HCA_LOG_QP_OFFSET);
716 MLX4_PUT(inbox, param->srqc_base, INIT_HCA_SRQC_BASE_OFFSET);
717 MLX4_PUT(inbox, param->log_num_srqs, INIT_HCA_LOG_SRQ_OFFSET);
718 MLX4_PUT(inbox, param->cqc_base, INIT_HCA_CQC_BASE_OFFSET);
719 MLX4_PUT(inbox, param->log_num_cqs, INIT_HCA_LOG_CQ_OFFSET);
720 MLX4_PUT(inbox, param->altc_base, INIT_HCA_ALTC_BASE_OFFSET);
721 MLX4_PUT(inbox, param->auxc_base, INIT_HCA_AUXC_BASE_OFFSET);
722 MLX4_PUT(inbox, param->eqc_base, INIT_HCA_EQC_BASE_OFFSET);
723 MLX4_PUT(inbox, param->log_num_eqs, INIT_HCA_LOG_EQ_OFFSET);
724 MLX4_PUT(inbox, param->rdmarc_base, INIT_HCA_RDMARC_BASE_OFFSET);
725 MLX4_PUT(inbox, param->log_rd_per_qp, INIT_HCA_LOG_RD_OFFSET);
726
727 /* multicast attributes */
728
729 MLX4_PUT(inbox, param->mc_base, INIT_HCA_MC_BASE_OFFSET);
730 MLX4_PUT(inbox, param->log_mc_entry_sz, INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET);
731 MLX4_PUT(inbox, param->log_mc_hash_sz, INIT_HCA_LOG_MC_HASH_SZ_OFFSET);
732 MLX4_PUT(inbox, param->log_mc_table_sz, INIT_HCA_LOG_MC_TABLE_SZ_OFFSET);
733
734 /* TPT attributes */
735
736 MLX4_PUT(inbox, param->dmpt_base, INIT_HCA_DMPT_BASE_OFFSET);
737 MLX4_PUT(inbox, param->log_mpt_sz, INIT_HCA_LOG_MPT_SZ_OFFSET);
738 MLX4_PUT(inbox, param->mtt_base, INIT_HCA_MTT_BASE_OFFSET);
739 MLX4_PUT(inbox, param->cmpt_base, INIT_HCA_CMPT_BASE_OFFSET);
740
741 /* UAR attributes */
742
743 MLX4_PUT(inbox, (u8) (PAGE_SHIFT - 12), INIT_HCA_UAR_PAGE_SZ_OFFSET);
744 MLX4_PUT(inbox, param->log_uar_sz, INIT_HCA_LOG_UAR_SZ_OFFSET);
745
746 err = mlx4_cmd(dev, mailbox->dma, 0, 0, MLX4_CMD_INIT_HCA, 10000);
747
748 if (err)
749 mlx4_err(dev, "INIT_HCA returns %d\n", err);
750
751 mlx4_free_cmd_mailbox(dev, mailbox);
752 return err;
753}
754
755int mlx4_INIT_PORT(struct mlx4_dev *dev, int port)
756{
757 struct mlx4_cmd_mailbox *mailbox;
758 u32 *inbox;
759 int err;
760 u32 flags;
761 u16 field;
762
763 if (dev->flags & MLX4_FLAG_OLD_PORT_CMDS) {
764#define INIT_PORT_IN_SIZE 256
765#define INIT_PORT_FLAGS_OFFSET 0x00
766#define INIT_PORT_FLAG_SIG (1 << 18)
767#define INIT_PORT_FLAG_NG (1 << 17)
768#define INIT_PORT_FLAG_G0 (1 << 16)
769#define INIT_PORT_VL_SHIFT 4
770#define INIT_PORT_PORT_WIDTH_SHIFT 8
771#define INIT_PORT_MTU_OFFSET 0x04
772#define INIT_PORT_MAX_GID_OFFSET 0x06
773#define INIT_PORT_MAX_PKEY_OFFSET 0x0a
774#define INIT_PORT_GUID0_OFFSET 0x10
775#define INIT_PORT_NODE_GUID_OFFSET 0x18
776#define INIT_PORT_SI_GUID_OFFSET 0x20
777
778 mailbox = mlx4_alloc_cmd_mailbox(dev);
779 if (IS_ERR(mailbox))
780 return PTR_ERR(mailbox);
781 inbox = mailbox->buf;
782
783 memset(inbox, 0, INIT_PORT_IN_SIZE);
784
785 flags = 0;
786 flags |= (dev->caps.vl_cap[port] & 0xf) << INIT_PORT_VL_SHIFT;
787 flags |= (dev->caps.port_width_cap[port] & 0xf) << INIT_PORT_PORT_WIDTH_SHIFT;
788 MLX4_PUT(inbox, flags, INIT_PORT_FLAGS_OFFSET);
789
790 field = 128 << dev->caps.mtu_cap[port];
791 MLX4_PUT(inbox, field, INIT_PORT_MTU_OFFSET);
792 field = dev->caps.gid_table_len[port];
793 MLX4_PUT(inbox, field, INIT_PORT_MAX_GID_OFFSET);
794 field = dev->caps.pkey_table_len[port];
795 MLX4_PUT(inbox, field, INIT_PORT_MAX_PKEY_OFFSET);
796
797 err = mlx4_cmd(dev, mailbox->dma, port, 0, MLX4_CMD_INIT_PORT,
798 MLX4_CMD_TIME_CLASS_A);
799
800 mlx4_free_cmd_mailbox(dev, mailbox);
801 } else
802 err = mlx4_cmd(dev, 0, port, 0, MLX4_CMD_INIT_PORT,
803 MLX4_CMD_TIME_CLASS_A);
804
805 return err;
806}
807EXPORT_SYMBOL_GPL(mlx4_INIT_PORT);
808
809int mlx4_CLOSE_PORT(struct mlx4_dev *dev, int port)
810{
811 return mlx4_cmd(dev, 0, port, 0, MLX4_CMD_CLOSE_PORT, 1000);
812}
813EXPORT_SYMBOL_GPL(mlx4_CLOSE_PORT);
814
815int mlx4_CLOSE_HCA(struct mlx4_dev *dev, int panic)
816{
817 return mlx4_cmd(dev, 0, 0, panic, MLX4_CMD_CLOSE_HCA, 1000);
818}
819
820int mlx4_SET_ICM_SIZE(struct mlx4_dev *dev, u64 icm_size, u64 *aux_pages)
821{
822 int ret = mlx4_cmd_imm(dev, icm_size, aux_pages, 0, 0,
823 MLX4_CMD_SET_ICM_SIZE,
824 MLX4_CMD_TIME_CLASS_A);
825 if (ret)
826 return ret;
827
828 /*
829 * Round up number of system pages needed in case
830 * MLX4_ICM_PAGE_SIZE < PAGE_SIZE.
831 */
832 *aux_pages = ALIGN(*aux_pages, PAGE_SIZE / MLX4_ICM_PAGE_SIZE) >>
833 (PAGE_SHIFT - MLX4_ICM_PAGE_SHIFT);
834
835 return 0;
836}
837
838int mlx4_NOP(struct mlx4_dev *dev)
839{
840 /* Input modifier of 0x1f means "finish as soon as possible." */
841 return mlx4_cmd(dev, 0, 0x1f, 0, MLX4_CMD_NOP, 100);
842}