2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
38 static inline void mthca_write64(uint32_t val[2], struct mthca_context *ctx, int offset)
40 /* i386 stack is aligned to 8 bytes, so this should be OK: */
41 uint8_t xmmsave[8] __attribute__((aligned(8)));
44 "movlps %%xmm0,(%0); \n\t"
45 "movlps (%1),%%xmm0; \n\t"
46 "movlps %%xmm0,(%2); \n\t"
47 "movlps (%0),%%xmm0; \n\t"
49 : "r" (xmmsave), "r" (val), "r" (ctx->uar + offset)
53 static inline void mthca_write_db_rec(uint32_t val[2], uint32_t *db)
55 /* i386 stack is aligned to 8 bytes, so this should be OK: */
56 uint8_t xmmsave[8] __attribute__((aligned(8)));
59 "movlps %%xmm0,(%0); \n\t"
60 "movlps (%1),%%xmm0; \n\t"
61 "movlps %%xmm0,(%2); \n\t"
62 "movlps (%0),%%xmm0; \n\t"
64 : "r" (xmmsave), "r" (val), "r" (db)
68 #elif SIZEOF_LONG == 8
70 #if __BYTE_ORDER == __LITTLE_ENDIAN
71 # define MTHCA_PAIR_TO_64(val) ((uint64_t) val[1] << 32 | val[0])
72 #elif __BYTE_ORDER == __BIG_ENDIAN
73 # define MTHCA_PAIR_TO_64(val) ((uint64_t) val[0] << 32 | val[1])
75 # error __BYTE_ORDER not defined
78 static inline void mthca_write64(uint32_t val[2], struct mthca_context *ctx, int offset)
80 *(volatile uint64_t *) (ctx->uar + offset) = MTHCA_PAIR_TO_64(val);
83 static inline void mthca_write_db_rec(uint32_t val[2], uint32_t *db)
85 *(volatile uint64_t *) db = MTHCA_PAIR_TO_64(val);
90 static inline void mthca_write64(uint32_t val[2], struct mthca_context *ctx, int offset)
92 pthread_spin_lock(&ctx->uar_lock);
93 *(volatile uint32_t *) (ctx->uar + offset) = val[0];
94 *(volatile uint32_t *) (ctx->uar + offset + 4) = val[1];
95 pthread_spin_unlock(&ctx->uar_lock);
98 static inline void mthca_write_db_rec(uint32_t val[2], uint32_t *db)
100 *(volatile uint32_t *) db = val[0];
102 *(volatile uint32_t *) (db + 1) = val[1];