98 lines
3.0 KiB
C
Executable File
98 lines
3.0 KiB
C
Executable File
/****************************************************************************
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*
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* Copyright (c) 2014 - 2017 Samsung Electronics Co., Ltd. All rights reserved
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*
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****************************************************************************/
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#ifndef _MXLOG_H
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#define _MXLOG_H
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#include <linux/firmware.h>
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#define MX_LOG_PHASE_4 4
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#define MX_LOG_PHASE_5 5
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#define SYNC_VALUE_PHASE_4 (0xA55A)
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#define SYNC_VALUE_PHASE_5 (0x9669)
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#define MXLOG_BUFFER_SIZE 512
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#define MINIMUM_MXLOG_MSG_LEN_BYTES (sizeof(u32) * 2)
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#define MXLOG_ELEMENT_SIZE (sizeof(u32))
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#define MAX_SPARE_FMT 256
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#define TSTAMP_LEN 9
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#define MAX_MX_LOG_ARGS 8
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#define MX_LOG_LOGSTRINGS_PATH "common/log-strings.bin" /* in f/w debug dir */
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#define MXLOG_SEXT(x) (((x) & 0x80000000) ? ((x) | 0xffffffff00000000) : (x))
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#define MXLS_DATA(mx) ((mx)->logstrings->data)
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#define MXLS_SZ(mx) ((mx)->logstrings->size)
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#define MXLOG_DEFSTR "<<%s OFFSET OUT OF RANGE. Check log-strings.bin>>"
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#define MXLOG_STR_SANE(x, base, size, cast) \
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(((x) < (size)) ? (typeof(cast))((base) + (x)) : (typeof(cast))(MXLOG_DEFSTR))
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#ifdef __aarch64__
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/**
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* ARM64
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* -----
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* We must process MXLOG messages 32bit-args coming from FW that have
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* a different fmt string interpretation in Kernel:
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*
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* FW KERN MXLOG_CAST
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* ---------------------------------------------------------
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* %d s32 s32 (s32)
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* %u %x u32 u32 (u32)
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* %ld s32 s64 (SIGN_EXT((s64)))
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* %lu u32 u64 (u64)
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*
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* Additionally we take care to skip any %s using defstr, a char pointer,
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* as def value for the argument; we casted it to u64 (sizeof(char *)) to fool
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* cond expr compilation warnings about types.
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*/
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#define MXLOG_CAST(x, p, smap, lmap, strmap, base, size) \
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(((strmap) & 1 << (p)) ? MXLOG_STR_SANE(x, base, size, u64) : \
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(((smap) & 1 << (p)) ? \
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(((lmap) & 1 << (p)) ? MXLOG_SEXT((s64)(x)) : (s32)(x)) : \
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(((lmap) & 1 << (p)) ? (u64)(x) : (u32)(x))))
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#else /* __arm__ */
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/**
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* ARM32
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* -----
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* We must process MXLOG messages 32bit-args coming from FW BUT in
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* ARM 32bit iMX6 they should have the same fmt string interpretation:
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*
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* FW KERN MXLOG_CAST
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* ---------------------------------------------------------
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* %d s32 s32 (s32)
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* %u %x u32 u32 (u32)
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* %ld s32 s32 (s32)
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* %lu u32 u32 (u32)
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*
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* So here we ignore long modifiers and ONLY take care to skip any %s using
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* defstr, a char pointer, as def value for the argument; we casted it to
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* u32 (sizeof(char *) to fool cond expr compilation warnings about types.
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*/
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#define MXLOG_CAST(x, p, smap, lmap, strmap, base, size) \
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(((strmap) & 1 << (p)) ? MXLOG_STR_SANE(x, base, size, u32) : \
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(((smap) & 1 << (p)) ? ((s32)(x)) : (u32)(x)))
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#endif /* __arch64__ */
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struct mxlog_event_log_msg {
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u32 timestamp;
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u32 offset;
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} __packed;
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struct mxlog;
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void mxlog_init(struct mxlog *mxlog, struct scsc_mx *mx, char *fw_build_id);
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void mxlog_release(struct mxlog *mxlog);
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struct mxlog {
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struct scsc_mx *mx;
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u8 buffer[MXLOG_BUFFER_SIZE];
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u16 index;
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struct firmware *logstrings;
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};
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#endif /* _MXLOG_H */
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