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debugfs_pipe_crc: Let's check CRCs!

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Let's add a new test that sets a mode, wait for a few vblanks (3) and
then make sure we read 3 identical CRCs.

Some subtests check for various parsing errors.

In the process, improve the debugfs helpers to deal with CRCs.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
This commit is contained in:
Damien Lespiau
2013-10-09 11:47:43 +01:00
parent f673775fe8
commit 4ba97ddf96
5 changed files with 475 additions and 0 deletions
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lib/igt_debugfs.h
+37
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@@ -25,8 +25,12 @@
#ifndef __IGT_DEBUGFS_H__
#define __IGT_DEBUGFS_H__
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include "igt_display.h"
typedef struct {
char root[128];
char dri_path[128];
@@ -37,4 +41,37 @@ int igt_debugfs_open(igt_debugfs_t *debugfs, const char *filename, int mode);
FILE *igt_debugfs_fopen(igt_debugfs_t *debugfs, const char *filename,
const char *mode);
/*
* Pipe CRC
*/
enum intel_pipe_crc_source {
INTEL_PIPE_CRC_SOURCE_NONE,
INTEL_PIPE_CRC_SOURCE_PLANE1,
INTEL_PIPE_CRC_SOURCE_PLANE2,
INTEL_PIPE_CRC_SOURCE_PF,
INTEL_PIPE_CRC_SOURCE_MAX,
};
typedef struct _igt_pipe_crc igt_pipe_crc_t;
typedef struct {
uint32_t frame;
int n_words;
uint32_t crc[5];
} igt_crc_t;
bool igt_crc_is_null(igt_crc_t *crc);
bool igt_crc_equal(igt_crc_t *a, igt_crc_t *b);
char *igt_crc_to_string(igt_crc_t *crc);
igt_pipe_crc_t *
igt_pipe_crc_new(igt_debugfs_t *debugfs, int drm_fd, enum pipe pipe,
enum intel_pipe_crc_source source);
void igt_pipe_crc_reset(void);
void igt_pipe_crc_free(igt_pipe_crc_t *pipe_crc);
void igt_pipe_crc_start(igt_pipe_crc_t *pipe_crc);
void igt_pipe_crc_stop(igt_pipe_crc_t *pipe_crc);
void igt_pipe_crc_get_crcs(igt_pipe_crc_t *pipe_crc, int n_crcs,
igt_crc_t **out_crcs);
#endif /* __IGT_DEBUGFS_H__ */