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* Copyright (c) 2010 Broadcom Corporation
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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#define MSGTRACE_VERSION 1
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/* Message trace header */
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typedef struct msgtrace_hdr {
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u16 len; /* Len of the trace */
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u32 seqnum; /* Sequence number of message. Useful
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* if the messsage has been lost
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* because of DMA error or a bus reset
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u32 discarded_bytes; /* Number of discarded bytes because of
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u32 discarded_printf; /* Number of discarded printf
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because of trace overflow */
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} __attribute__((packed)) msgtrace_hdr_t;
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#define MSGTRACE_HDRLEN sizeof(msgtrace_hdr_t)
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/* The hbus driver generates traces when sending a trace message.
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* This causes endless traces.
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* This flag must be set to true in any hbus traces.
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* The flag is reset in the function msgtrace_put.
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* This prevents endless traces but generates hasardous
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* lost of traces only in bus device code.
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* It is recommendat to set this flag in macro SD_TRACE
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* but not in SD_ERROR for avoiding missing
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* hbus error traces. hbus error trace should not generates endless traces.
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extern bool msgtrace_hbus_trace;
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typedef void (*msgtrace_func_send_t) (void *hdl1, void *hdl2, u8 *hdr,
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extern void msgtrace_sent(void);
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extern void msgtrace_put(char *buf, int count);
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extern void msgtrace_init(void *hdl1, void *hdl2,
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msgtrace_func_send_t func_send);
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#endif /* _MSGTRACE_H */