The print_buffer() function is very useful for debugging. Add a version of this in the log system also.
Signed-off-by: Simon Glass sjg@chromium.org ---
(no changes since v1)
common/log.c | 30 ++++++++++++++++++++++++++++++ include/log.h | 35 +++++++++++++++++++++++++++++++++++ test/log/log_test.c | 27 +++++++++++++++++++++++++++ 3 files changed, 92 insertions(+)
diff --git a/common/log.c b/common/log.c index ea407c6db9e..1aaa6c1527b 100644 --- a/common/log.c +++ b/common/log.c @@ -284,6 +284,36 @@ int _log(enum log_category_t cat, enum log_level_t level, const char *file, return 0; }
+#define MAX_LINE_LENGTH_BYTES 64 +#define DEFAULT_LINE_LENGTH_BYTES 16 + +int _log_buffer(enum log_category_t cat, enum log_level_t level, + const char *file, int line, const char *func, ulong addr, + const void *data, uint width, uint count, uint linelen) +{ + if (linelen * width > MAX_LINE_LENGTH_BYTES) + linelen = MAX_LINE_LENGTH_BYTES / width; + if (linelen < 1) + linelen = DEFAULT_LINE_LENGTH_BYTES / width; + + while (count) { + uint thislinelen; + char buf[HEXDUMP_MAX_BUF_LENGTH(width * linelen)]; + + thislinelen = hexdump_line(addr, data, width, count, linelen, + buf, sizeof(buf)); + assert(thislinelen >= 0); + _log(cat, level, file, line, func, "%s\n", buf); + + /* update references */ + data += thislinelen * width; + addr += thislinelen * width; + count -= thislinelen; + } + + return 0; +} + int log_add_filter_flags(const char *drv_name, enum log_category_t cat_list[], enum log_level_t level, const char *file_list, int flags) diff --git a/include/log.h b/include/log.h index add3a1e4a0c..feb0204855a 100644 --- a/include/log.h +++ b/include/log.h @@ -140,6 +140,24 @@ static inline int _log_nop(enum log_category_t cat, enum log_level_t level, return 0; }
+/** + * _log_buffer - Internal function to print data buffer in hex and ascii form + * + * @cat: Category of log record (indicating which subsystem generated it) + * @level: Level of log record (indicating its severity) + * @file: File name of file where log record was generated + * @line: Line number in file where log record was generated + * @func: Function where log record was generated + * @addr: Starting address to display at start of line + * @data: pointer to data buffer + * @width: data value width. May be 1, 2, or 4. + * @count: number of values to display + * @linelen: Number of values to print per line; specify 0 for default length + */ +int _log_buffer(enum log_category_t cat, enum log_level_t level, + const char *file, int line, const char *func, ulong addr, + const void *data, uint width, uint count, uint linelen); + /* Define this at the top of a file to add a prefix to debug messages */ #ifndef pr_fmt #define pr_fmt(fmt) fmt @@ -200,8 +218,25 @@ static inline int _log_nop(enum log_category_t cat, enum log_level_t level, __LINE__, __func__, \ pr_fmt(_fmt), ##_args); \ }) + +/* Emit a dump if the level is less that the maximum */ +#define log_buffer(_cat, _level, _addr, _data, _width, _count, _linelen) ({ \ + int _l = _level; \ + if (_LOG_DEBUG != 0 || _l <= _LOG_MAX_LEVEL) \ + _log_buffer((enum log_category_t)(_cat), \ + (enum log_level_t)(_l | _LOG_DEBUG), __FILE__, \ + __LINE__, __func__, _addr, _data, \ + _width, _count, _linelen); \ + }) #else #define log(_cat, _level, _fmt, _args...) + +#define log_buffer(_cat, _level, _addr, _data, _width, _count, _linelen) ({ \ + int _l = _level; \ + if (_LOG_DEBUG != 0 || _l <= LOGL_INFO || \ + (_DEBUG && _l == LOGL_DEBUG)) \ + print_buffer(_addr, _data, _width, _count, _linelen); \ + }) #endif
#define log_nop(_cat, _level, _fmt, _args...) ({ \ diff --git a/test/log/log_test.c b/test/log/log_test.c index 4a814ff4132..f1e67509c17 100644 --- a/test/log/log_test.c +++ b/test/log/log_test.c @@ -429,3 +429,30 @@ int log_test_dropped(struct unit_test_state *uts) return 0; } LOG_TEST_FLAGS(log_test_dropped, UT_TESTF_CONSOLE_REC); + +/* Check log_buffer() */ +int log_test_buffer(struct unit_test_state *uts) +{ + u8 *buf; + int i; + + buf = malloc(0x20); + ut_assertnonnull(buf); + memset(buf, '\0', 0x20); + for (i = 0; i < 0x11; i++) + buf[i] = i * 0x11; + + ut_assertok(console_record_reset_enable()); + log_buffer(LOGC_BOOT, LOGL_INFO, 0, buf, 1, 0x12, 0); + + /* This one should product no output due to the debug level */ + log_buffer(LOGC_BOOT, LOGL_DEBUG, 0, buf, 1, 0x12, 0); + + ut_assert_nextline("00000000: 00 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff .."3DUfw........"); + ut_assert_nextline("00000010: 10 00 .."); + ut_assert_console_end(); + free(buf); + + return 0; +} +LOG_TEST_FLAGS(log_test_buffer, UT_TESTF_CONSOLE_REC);