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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/qman.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/qman.h')
| -rw-r--r-- | include/soc/fsl/qman.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/soc/fsl/qman.h b/include/soc/fsl/qman.h index d4dfefdee6c1..597783b8a3a0 100644 --- a/include/soc/fsl/qman.h +++ b/include/soc/fsl/qman.h @@ -1186,4 +1186,12 @@ int qman_alloc_cgrid_range(u32 *result, u32 count); */ int qman_release_cgrid(u32 id); +/** + * qman_is_probed - Check if qman is probed + * + * Returns 1 if the qman driver successfully probed, -1 if the qman driver + * failed to probe or 0 if the qman driver did not probed yet. + */ +int qman_is_probed(void); + #endif /* __FSL_QMAN_H */ |