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| author | Laurentiu Tudor <laurentiu.tudor@nxp.com> | 2018-09-26 16:22:30 +0300 |
|---|---|---|
| committer | Li Yang <leoyang.li@nxp.com> | 2018-09-27 23:43:35 +0300 |
| commit | 853dc104e6a43cba9a7a87542bc6d8e3b74f0bc9 (patch) | |
| tree | 0e0afdd4c45a3e096fc5b7c85380aaede6d6b8b6 /include/soc/fsl/bman.h | |
| parent | 96fc74333f84cfdf8d434c6c07254e215e2aad00 (diff) | |
| download | linux-853dc104e6a43cba9a7a87542bc6d8e3b74f0bc9.tar.xz | |
soc: fsl: qbman: add APIs to retrieve the probing status
Add a couple of new APIs to check the probing status of qman and bman:
'int bman_is_probed()' and 'int qman_is_probed()'.
They return the following values.
* 1 if qman/bman were probed correctly
* 0 if qman/bman were not yet probed
* -1 if probing of qman/bman failed
Drivers that use qman/bman driver services are required to use these
APIs before calling any functions exported by qman or bman drivers
or otherwise they will crash the kernel.
The APIs will be used in the following couple of qbman portal patches
and later in the series in the dpaa1 ethernet driver.
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
Diffstat (limited to 'include/soc/fsl/bman.h')
| -rw-r--r-- | include/soc/fsl/bman.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/soc/fsl/bman.h b/include/soc/fsl/bman.h index eaaf56df4086..5b99cb2ea5ef 100644 --- a/include/soc/fsl/bman.h +++ b/include/soc/fsl/bman.h @@ -126,4 +126,12 @@ int bman_release(struct bman_pool *pool, const struct bm_buffer *bufs, u8 num); */ int bman_acquire(struct bman_pool *pool, struct bm_buffer *bufs, u8 num); +/** + * bman_is_probed - Check if bman is probed + * + * Returns 1 if the bman driver successfully probed, -1 if the bman driver + * failed to probe or 0 if the bman driver did not probed yet. + */ +int bman_is_probed(void); + #endif /* __FSL_BMAN_H */ |