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/*
* Copyright (c) 2010 Broadcom Corporation
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _MSGTRACE_H
#define _MSGTRACE_H
#define MSGTRACE_VERSION 1
/* Message trace header */
typedef struct msgtrace_hdr {
u8 version;
u8 spare;
u16 len; /* Len of the trace */
u32 seqnum; /* Sequence number of message. Useful
* if the messsage has been lost
* because of DMA error or a bus reset
* (ex: SDIO Func2)
*/
u32 discarded_bytes; /* Number of discarded bytes because of
trace overflow */
u32 discarded_printf; /* Number of discarded printf
because of trace overflow */
} __attribute__((packed)) msgtrace_hdr_t;
#define MSGTRACE_HDRLEN sizeof(msgtrace_hdr_t)
/* The hbus driver generates traces when sending a trace message.
* This causes endless traces.
* This flag must be set to true in any hbus traces.
* The flag is reset in the function msgtrace_put.
* This prevents endless traces but generates hasardous
* lost of traces only in bus device code.
* It is recommendat to set this flag in macro SD_TRACE
* but not in SD_ERROR for avoiding missing
* hbus error traces. hbus error trace should not generates endless traces.
*/
extern bool msgtrace_hbus_trace;
typedef void (*msgtrace_func_send_t) (void *hdl1, void *hdl2, u8 *hdr,
u16 hdrlen, u8 *buf,
u16 buflen);
extern void msgtrace_sent(void);
extern void msgtrace_put(char *buf, int count);
extern void msgtrace_init(void *hdl1, void *hdl2,
msgtrace_func_send_t func_send);
#endif /* _MSGTRACE_H */
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