[PATCH 04/11] soc: fsl: dpio: add congestion notification support
From: Li Yang <hidden>
Date: 2018-09-10 20:12:05
Also in:
linux-crypto, lkml
On Mon, Sep 10, 2018 at 12:19 PM Horia Geant? [off-list ref] wrote:
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). Signed-off-by: Horia Geant? <horia.geanta@nxp.com>
Acked-by: Li Yang <redacted>
quoted hunk ↗ jump to hunk
--- include/soc/fsl/dpaa2-global.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+)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 */ --2.16.2