f856f099cb
debug (cudbg) code, hooked up to the main driver via an ioctl. The ioctl can be used to collect the chip's internal state in a compressed dump file. These dumps can be decoded with the "view" component of cudbg. Obtained from: Chelsio Communications MFC after: 2 months Sponsored by: Chelsio Communications
97 lines
2.9 KiB
C
97 lines
2.9 KiB
C
/*-
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* Copyright (c) 2017 Chelsio Communications, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/param.h>
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#include "common/common.h"
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#include "cudbg.h"
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#include "cudbg_lib_common.h"
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int get_scratch_buff(struct cudbg_buffer *pdbg_buff, u32 size,
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struct cudbg_buffer *pscratch_buff)
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{
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u32 scratch_offset;
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int rc = 0;
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scratch_offset = pdbg_buff->size - size;
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if (pdbg_buff->offset > (int)scratch_offset || pdbg_buff->size < size) {
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rc = CUDBG_STATUS_NO_SCRATCH_MEM;
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goto err;
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} else {
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pscratch_buff->data = (char *)pdbg_buff->data + scratch_offset;
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pscratch_buff->offset = 0;
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pscratch_buff->size = size;
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pdbg_buff->size -= size;
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}
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err:
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return rc;
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}
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void release_scratch_buff(struct cudbg_buffer *pscratch_buff,
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struct cudbg_buffer *pdbg_buff)
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{
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pdbg_buff->size += pscratch_buff->size;
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/* Reset the used buffer to zero.
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* If we dont do this, then it will effect the ext entity logic.
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*/
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memset(pscratch_buff->data, 0, pscratch_buff->size);
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pscratch_buff->data = NULL;
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pscratch_buff->offset = 0;
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pscratch_buff->size = 0;
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}
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static inline void init_cudbg_hdr(struct cudbg_init_hdr *hdr)
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{
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hdr->major_ver = CUDBG_MAJOR_VERSION;
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hdr->minor_ver = CUDBG_MINOR_VERSION;
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hdr->build_ver = CUDBG_BUILD_VERSION;
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hdr->init_struct_size = sizeof(struct cudbg_init);
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}
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void *
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cudbg_alloc_handle(void)
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{
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struct cudbg_private *handle;
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handle = malloc(sizeof(*handle), M_CXGBE, M_ZERO | M_WAITOK);
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init_cudbg_hdr(&handle->dbg_init.header);
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return (handle);
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}
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void
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cudbg_free_handle(void *handle)
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{
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free(handle, M_CXGBE);
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}
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