2 * Copyright (c) 2017 Chelsio Communications, Inc.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/types.h>
31 #include <sys/param.h>
33 #include "common/common.h"
35 #include "cudbg_lib_common.h"
37 int get_scratch_buff(struct cudbg_buffer *pdbg_buff, u32 size,
38 struct cudbg_buffer *pscratch_buff)
43 scratch_offset = pdbg_buff->size - size;
45 if (pdbg_buff->offset > (int)scratch_offset || pdbg_buff->size < size) {
46 rc = CUDBG_STATUS_NO_SCRATCH_MEM;
49 pscratch_buff->data = (char *)pdbg_buff->data + scratch_offset;
50 pscratch_buff->offset = 0;
51 pscratch_buff->size = size;
52 pdbg_buff->size -= size;
59 void release_scratch_buff(struct cudbg_buffer *pscratch_buff,
60 struct cudbg_buffer *pdbg_buff)
62 pdbg_buff->size += pscratch_buff->size;
63 /* Reset the used buffer to zero.
64 * If we dont do this, then it will effect the ext entity logic.
66 memset(pscratch_buff->data, 0, pscratch_buff->size);
67 pscratch_buff->data = NULL;
68 pscratch_buff->offset = 0;
69 pscratch_buff->size = 0;
72 static inline void init_cudbg_hdr(struct cudbg_init_hdr *hdr)
74 hdr->major_ver = CUDBG_MAJOR_VERSION;
75 hdr->minor_ver = CUDBG_MINOR_VERSION;
76 hdr->build_ver = CUDBG_BUILD_VERSION;
77 hdr->init_struct_size = sizeof(struct cudbg_init);
81 cudbg_alloc_handle(void)
83 struct cudbg_private *handle;
85 handle = malloc(sizeof(*handle), M_CXGBE, M_ZERO | M_WAITOK);
86 init_cudbg_hdr(&handle->dbg_init.header);
92 cudbg_free_handle(void *handle)
95 free(handle, M_CXGBE);