diff options
| author | Horia Geantă <horia.geanta@nxp.com> | 2018-09-12 11:59:29 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-09-21 08:24:50 +0300 |
| commit | 55d0110248b2a419fdf94f0275c19fc9c394273a (patch) | |
| tree | ff637b72d7927cb83d134cfc1861d9a4be11656e | |
| parent | 009447a038ec98cd11074e78a85ffd71f5c84d3b (diff) | |
| download | linux-55d0110248b2a419fdf94f0275c19fc9c394273a.tar.xz | |
soc: fsl: dpio: add congestion notification support
Add support for Congestion State Change Notifications (CSCN), which
allow DPIO users to be notified when a congestion group changes its
state (due to hitting the entrance / exit threshold).
Acked-by: Li Yang <leoyang.li@nxp.com>
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | include/soc/fsl/dpaa2-global.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/soc/fsl/dpaa2-global.h b/include/soc/fsl/dpaa2-global.h index 9bc0713346a8..2bfc379d3dc9 100644 --- a/include/soc/fsl/dpaa2-global.h +++ b/include/soc/fsl/dpaa2-global.h @@ -174,4 +174,19 @@ static inline const struct dpaa2_fd *dpaa2_dq_fd(const struct dpaa2_dq *dq) return (const struct dpaa2_fd *)&dq->dq.fd[0]; } +#define DPAA2_CSCN_SIZE sizeof(struct dpaa2_dq) +#define DPAA2_CSCN_ALIGN 16 +#define DPAA2_CSCN_STATE_CG BIT(0) + +/** + * dpaa2_cscn_state_congested() - Check congestion state + * @cscn: congestion SCN (delivered to WQ or memory) + * +i * Return true is congested. + */ +static inline bool dpaa2_cscn_state_congested(struct dpaa2_dq *cscn) +{ + return !!(cscn->scn.state & DPAA2_CSCN_STATE_CG); +} + #endif /* __FSL_DPAA2_GLOBAL_H */ |