soc: fsl: dpio: add congestion notification support (55d01102) · Commits · 戴 / test

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>

include/soc/fsl/dpaa2-global.h

+15 −0

Original line number	Diff line number	Diff line
		@@ -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 */

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