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soc: fsl: qbman: add APIs to retrieve the probing status

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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>
This commit is contained in:
Laurentiu Tudor
2018-09-26 16:22:30 +03:00
committed by Li Yang
parent 96fc74333f
commit 853dc104e6
4 changed files with 38 additions and 0 deletions
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8
include/soc/fsl/bman.h
View File

@@ -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 */

8
include/soc/fsl/qman.h
View File

@@ -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 */